diff options
Diffstat (limited to 'net/batman-adv')
41 files changed, 1308 insertions, 3713 deletions
diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig index 860a0786bc1e..58c408b7a7d9 100644 --- a/net/batman-adv/Kconfig +++ b/net/batman-adv/Kconfig @@ -9,7 +9,7 @@ config BATMAN_ADV tristate "B.A.T.M.A.N. Advanced Meshing Protocol" - select LIBCRC32C + select CRC32 help B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The @@ -35,6 +35,7 @@ config BATMAN_ADV_BLA bool "Bridge Loop Avoidance" depends on BATMAN_ADV && INET select CRC16 + select NET_CRC32C default y help This option enables BLA (Bridge Loop Avoidance), a mechanism @@ -53,19 +54,6 @@ config BATMAN_ADV_DAT mesh networks. If you think that your network does not need this option you can safely remove it and save some space. -config BATMAN_ADV_NC - bool "Network Coding" - depends on BATMAN_ADV - help - This option enables network coding, a mechanism that aims to - increase the overall network throughput by fusing multiple - packets in one transmission. - Note that interfaces controlled by batman-adv must be manually - configured to have promiscuous mode enabled in order to make - network coding work. - If you think that your network does not need this feature you - can safely disable it and save some space. - config BATMAN_ADV_MCAST bool "Multicast optimisation" depends on BATMAN_ADV && INET && !(BRIDGE=m && BATMAN_ADV=y) diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile index b51d8b071b56..d3c4d4143c14 100644 --- a/net/batman-adv/Makefile +++ b/net/batman-adv/Makefile @@ -19,14 +19,13 @@ batman-adv-y += hard-interface.o batman-adv-y += hash.o batman-adv-$(CONFIG_BATMAN_ADV_DEBUG) += log.o batman-adv-y += main.o +batman-adv-y += mesh-interface.o batman-adv-$(CONFIG_BATMAN_ADV_MCAST) += multicast.o batman-adv-$(CONFIG_BATMAN_ADV_MCAST) += multicast_forw.o batman-adv-y += netlink.o -batman-adv-$(CONFIG_BATMAN_ADV_NC) += network-coding.o batman-adv-y += originator.o batman-adv-y += routing.o batman-adv-y += send.o -batman-adv-y += soft-interface.o batman-adv-$(CONFIG_BATMAN_ADV_TRACING) += trace.o batman-adv-y += tp_meter.o batman-adv-y += translation-table.o diff --git a/net/batman-adv/bat_algo.c b/net/batman-adv/bat_algo.c index 4eee53d19eb0..49e5861b58ec 100644 --- a/net/batman-adv/bat_algo.c +++ b/net/batman-adv/bat_algo.c @@ -14,6 +14,7 @@ #include <linux/skbuff.h> #include <linux/stddef.h> #include <linux/string.h> +#include <linux/types.h> #include <net/genetlink.h> #include <net/netlink.h> #include <uapi/linux/batman_adv.h> @@ -90,15 +91,15 @@ int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops) } /** - * batadv_algo_select() - Select algorithm of soft interface - * @bat_priv: the bat priv with all the soft interface information + * batadv_algo_select() - Select algorithm of mesh interface + * @bat_priv: the bat priv with all the mesh interface information * @name: name of the algorithm to select * - * The algorithm callbacks for the soft interface will be set when the algorithm + * The algorithm callbacks for the mesh interface will be set when the algorithm * with the correct name was found. Any previous selected algorithm will not be * deinitialized and the new selected algorithm will also not be initialized. * It is therefore not allowed to call batadv_algo_select outside the creation - * function of the soft interface. + * function of the mesh interface. * * Return: 0 on success or negative error number in case of failure */ diff --git a/net/batman-adv/bat_algo.h b/net/batman-adv/bat_algo.h index 2c486374af58..7ce9abbdb4b4 100644 --- a/net/batman-adv/bat_algo.h +++ b/net/batman-adv/bat_algo.h @@ -11,10 +11,8 @@ #include <linux/netlink.h> #include <linux/skbuff.h> -#include <linux/types.h> extern char batadv_routing_algo[]; -extern struct list_head batadv_hardif_list; void batadv_algo_init(void); struct batadv_algo_ops *batadv_algo_get(const char *name); diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 74b49c35ddc1..b75c2228e69a 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -23,6 +23,7 @@ #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> +#include <linux/minmax.h> #include <linux/mutex.h> #include <linux/netdevice.h> #include <linux/netlink.h> @@ -36,6 +37,7 @@ #include <linux/spinlock.h> #include <linux/stddef.h> #include <linux/string.h> +#include <linux/string_choices.h> #include <linux/types.h> #include <linux/workqueue.h> #include <net/genetlink.h> @@ -50,7 +52,6 @@ #include "hash.h" #include "log.h" #include "netlink.h" -#include "network-coding.h" #include "originator.h" #include "routing.h" #include "send.h" @@ -128,7 +129,7 @@ static u8 batadv_ring_buffer_avg(const u8 lq_recv[]) /** * batadv_iv_ogm_orig_get() - retrieve or create (if does not exist) an * originator - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: mac address of the originator * * Return: the originator object corresponding to the passed mac address or NULL @@ -324,15 +325,14 @@ batadv_iv_ogm_aggr_packet(int buff_pos, int packet_len, /* check if there is enough space for the optional TVLV */ next_buff_pos += ntohs(ogm_packet->tvlv_len); - return (next_buff_pos <= packet_len) && - (next_buff_pos <= BATADV_MAX_AGGREGATION_BYTES); + return next_buff_pos <= packet_len; } /* send a batman ogm to a given interface */ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet, struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); const char *fwd_str; u8 packet_num; s16 buff_pos; @@ -354,7 +354,7 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet, /* we might have aggregated direct link packets with an * ordinary base packet */ - if (forw_packet->direct_link_flags & BIT(packet_num) && + if (test_bit(packet_num, forw_packet->direct_link_flags) && forw_packet->if_incoming == hard_iface) batadv_ogm_packet->flags |= BATADV_DIRECTLINK; else @@ -371,8 +371,7 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet, batadv_ogm_packet->orig, ntohl(batadv_ogm_packet->seqno), batadv_ogm_packet->tq, batadv_ogm_packet->ttl, - ((batadv_ogm_packet->flags & BATADV_DIRECTLINK) ? - "on" : "off"), + str_on_off(batadv_ogm_packet->flags & BATADV_DIRECTLINK), hard_iface->net_dev->name, hard_iface->net_dev->dev_addr); @@ -396,20 +395,20 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet, /* send a batman ogm packet */ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet) { - struct net_device *soft_iface; + struct net_device *mesh_iface; if (!forw_packet->if_incoming) { pr_err("Error - can't forward packet: incoming iface not specified\n"); return; } - soft_iface = forw_packet->if_incoming->soft_iface; + mesh_iface = forw_packet->if_incoming->mesh_iface; if (WARN_ON(!forw_packet->if_outgoing)) return; - if (forw_packet->if_outgoing->soft_iface != soft_iface) { - pr_warn("%s: soft interface switch for queued OGM\n", __func__); + if (forw_packet->if_outgoing->mesh_iface != mesh_iface) { + pr_warn("%s: mesh interface switch for queued OGM\n", __func__); return; } @@ -424,7 +423,7 @@ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet) * batadv_iv_ogm_can_aggregate() - find out if an OGM can be aggregated on an * existing forward packet * @new_bat_ogm_packet: OGM packet to be aggregated - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @packet_len: (total) length of the OGM * @send_time: timestamp (jiffies) when the packet is to be sent * @directlink: true if this is a direct link packet @@ -444,28 +443,37 @@ batadv_iv_ogm_can_aggregate(const struct batadv_ogm_packet *new_bat_ogm_packet, const struct batadv_forw_packet *forw_packet) { struct batadv_ogm_packet *batadv_ogm_packet; - int aggregated_bytes = forw_packet->packet_len + packet_len; + unsigned int aggregated_bytes = forw_packet->packet_len + packet_len; struct batadv_hard_iface *primary_if = NULL; + u8 packet_num = forw_packet->num_packets; bool res = false; unsigned long aggregation_end_time; + unsigned int max_bytes; batadv_ogm_packet = (struct batadv_ogm_packet *)forw_packet->skb->data; aggregation_end_time = send_time; aggregation_end_time += msecs_to_jiffies(BATADV_MAX_AGGREGATION_MS); + max_bytes = min_t(unsigned int, if_outgoing->net_dev->mtu, + BATADV_MAX_AGGREGATION_BYTES); + /* we can aggregate the current packet to this aggregated packet * if: * * - the send time is within our MAX_AGGREGATION_MS time * - the resulting packet won't be bigger than - * MAX_AGGREGATION_BYTES + * MAX_AGGREGATION_BYTES and MTU of the outgoing interface + * - the number of packets is lower than MAX_AGGREGATION_PACKETS * otherwise aggregation is not possible */ if (!time_before(send_time, forw_packet->send_time) || !time_after_eq(aggregation_end_time, forw_packet->send_time)) return false; - if (aggregated_bytes > BATADV_MAX_AGGREGATION_BYTES) + if (aggregated_bytes > max_bytes) + return false; + + if (packet_num >= BATADV_MAX_AGGREGATION_PACKETS) return false; /* packet is not leaving on the same interface. */ @@ -540,16 +548,16 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, struct batadv_hard_iface *if_outgoing, int own_packet) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct batadv_forw_packet *forw_packet_aggr; struct sk_buff *skb; unsigned char *skb_buff; unsigned int skb_size; atomic_t *queue_left = own_packet ? NULL : &bat_priv->batman_queue_left; - if (atomic_read(&bat_priv->aggregated_ogms) && - packet_len < BATADV_MAX_AGGREGATION_BYTES) - skb_size = BATADV_MAX_AGGREGATION_BYTES; + if (atomic_read(&bat_priv->aggregated_ogms)) + skb_size = max_t(unsigned int, BATADV_MAX_AGGREGATION_BYTES, + packet_len); else skb_size = packet_len; @@ -574,12 +582,13 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, memcpy(skb_buff, packet_buff, packet_len); forw_packet_aggr->own = own_packet; - forw_packet_aggr->direct_link_flags = BATADV_NO_FLAGS; + bitmap_zero(forw_packet_aggr->direct_link_flags, + BATADV_MAX_AGGREGATION_PACKETS); forw_packet_aggr->send_time = send_time; /* save packet direct link flag status */ if (direct_link) - forw_packet_aggr->direct_link_flags |= 1; + set_bit(0, forw_packet_aggr->direct_link_flags); INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work, batadv_iv_send_outstanding_bat_ogm_packet); @@ -592,22 +601,20 @@ static void batadv_iv_ogm_aggregate(struct batadv_forw_packet *forw_packet_aggr, const unsigned char *packet_buff, int packet_len, bool direct_link) { - unsigned long new_direct_link_flag; - skb_put_data(forw_packet_aggr->skb, packet_buff, packet_len); forw_packet_aggr->packet_len += packet_len; - forw_packet_aggr->num_packets++; /* save packet direct link flag status */ - if (direct_link) { - new_direct_link_flag = BIT(forw_packet_aggr->num_packets); - forw_packet_aggr->direct_link_flags |= new_direct_link_flag; - } + if (direct_link) + set_bit(forw_packet_aggr->num_packets, + forw_packet_aggr->direct_link_flags); + + forw_packet_aggr->num_packets++; } /** * batadv_iv_ogm_queue_add() - queue up an OGM for transmission - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @packet_buff: pointer to the OGM * @packet_len: (total) length of the OGM * @if_incoming: interface where the packet was received @@ -686,7 +693,7 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node, struct batadv_hard_iface *if_incoming, struct batadv_hard_iface *if_outgoing) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); u16 tvlv_len; if (batadv_ogm_packet->ttl <= 1) { @@ -739,7 +746,7 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node, static void batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); struct batadv_hashtable *hash = bat_priv->orig_hash; struct hlist_head *head; struct batadv_orig_node *orig_node; @@ -778,11 +785,12 @@ batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface) */ static void batadv_iv_ogm_schedule_buff(struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); unsigned char **ogm_buff = &hard_iface->bat_iv.ogm_buff; struct batadv_ogm_packet *batadv_ogm_packet; struct batadv_hard_iface *primary_if, *tmp_hard_iface; int *ogm_buff_len = &hard_iface->bat_iv.ogm_buff_len; + struct list_head *iter; u32 seqno; u16 tvlv_len = 0; unsigned long send_time; @@ -839,10 +847,7 @@ static void batadv_iv_ogm_schedule_buff(struct batadv_hard_iface *hard_iface) * interfaces. */ rcu_read_lock(); - list_for_each_entry_rcu(tmp_hard_iface, &batadv_hardif_list, list) { - if (tmp_hard_iface->soft_iface != hard_iface->soft_iface) - continue; - + netdev_for_each_lower_private_rcu(hard_iface->mesh_iface, tmp_hard_iface, iter) { if (!kref_get_unless_zero(&tmp_hard_iface->refcount)) continue; @@ -901,7 +906,7 @@ static u8 batadv_iv_orig_ifinfo_sum(struct batadv_orig_node *orig_node, /** * batadv_iv_ogm_orig_update() - use OGM to update corresponding data in an * originator - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: the orig node who originally emitted the ogm packet * @orig_ifinfo: ifinfo for the outgoing interface of the orig_node * @ethhdr: Ethernet header of the OGM @@ -1065,7 +1070,7 @@ static bool batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node, struct batadv_hard_iface *if_incoming, struct batadv_hard_iface *if_outgoing) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct batadv_neigh_node *neigh_node = NULL, *tmp_neigh_node; struct batadv_neigh_ifinfo *neigh_ifinfo; u8 total_count; @@ -1207,7 +1212,7 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, const struct batadv_hard_iface *if_incoming, struct batadv_hard_iface *if_outgoing) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct batadv_orig_node *orig_node; struct batadv_orig_ifinfo *orig_ifinfo = NULL; struct batadv_neigh_node *neigh_node; @@ -1309,7 +1314,7 @@ batadv_iv_ogm_process_per_outif(const struct sk_buff *skb, int ogm_offset, struct batadv_hard_iface *if_incoming, struct batadv_hard_iface *if_outgoing) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct batadv_hardif_neigh_node *hardif_neigh = NULL; struct batadv_neigh_node *router = NULL; struct batadv_neigh_node *router_router = NULL; @@ -1400,10 +1405,6 @@ batadv_iv_ogm_process_per_outif(const struct sk_buff *skb, int ogm_offset, if (!orig_neigh_node) goto out; - /* Update nc_nodes of the originator */ - batadv_nc_update_nc_node(bat_priv, orig_node, orig_neigh_node, - ogm_packet, is_single_hop_neigh); - orig_neigh_router = batadv_orig_router_get(orig_neigh_node, if_outgoing); @@ -1549,7 +1550,7 @@ static void batadv_iv_ogm_process_reply(struct batadv_ogm_packet *ogm_packet, static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, struct batadv_hard_iface *if_incoming) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct batadv_orig_node *orig_neigh_node, *orig_node; struct batadv_hard_iface *hard_iface; struct batadv_ogm_packet *ogm_packet; @@ -1559,6 +1560,7 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, bool is_my_oldorig = false; bool is_my_addr = false; bool is_my_orig = false; + struct list_head *iter; ogm_packet = (struct batadv_ogm_packet *)(skb->data + ogm_offset); ethhdr = eth_hdr(skb); @@ -1595,11 +1597,9 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, ogm_packet->version, has_directlink_flag); rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->if_status != BATADV_IF_ACTIVE) - continue; - if (hard_iface->soft_iface != if_incoming->soft_iface) + netdev_for_each_lower_private_rcu(if_incoming->mesh_iface, hard_iface, iter) { + if (hard_iface->if_status != BATADV_IF_ACTIVE) continue; if (batadv_compare_eth(ethhdr->h_source, @@ -1660,13 +1660,10 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, if_incoming, BATADV_IF_DEFAULT); rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (hard_iface->if_status != BATADV_IF_ACTIVE) continue; - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - if (!kref_get_unless_zero(&hard_iface->refcount)) continue; @@ -1690,7 +1687,7 @@ static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work) delayed_work = to_delayed_work(work); forw_packet = container_of(delayed_work, struct batadv_forw_packet, delayed_work); - bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface); + bat_priv = netdev_priv(forw_packet->if_incoming->mesh_iface); if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_DEACTIVATING) { dropped = true; @@ -1721,7 +1718,7 @@ out: static int batadv_iv_ogm_receive(struct sk_buff *skb, struct batadv_hard_iface *if_incoming) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct batadv_ogm_packet *ogm_packet; u8 *packet_pos; int ogm_offset; @@ -1800,7 +1797,7 @@ batadv_iv_ogm_neigh_get_tq_avg(struct batadv_neigh_node *neigh_node, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @if_outgoing: Limit dump to entries with this outgoing interface * @orig_node: Originator to dump * @neigh_node: Single hops neighbour @@ -1863,7 +1860,7 @@ batadv_iv_ogm_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @if_outgoing: Limit dump to entries with this outgoing interface * @orig_node: Originator to dump * @sub_s: Number of sub entries to skip @@ -1925,7 +1922,7 @@ batadv_iv_ogm_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @if_outgoing: Limit dump to entries with this outgoing interface * @head: Bucket to be dumped * @idx_s: Number of entries to be skipped @@ -1966,7 +1963,7 @@ batadv_iv_ogm_orig_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq, * batadv_iv_ogm_orig_dump() - Dump the originators into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @if_outgoing: Limit dump to entries with this outgoing interface */ static void @@ -2088,7 +2085,7 @@ batadv_iv_ogm_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @hard_iface: Hard interface to dump the neighbours for * @idx_s: Number of entries to skip * @@ -2125,7 +2122,7 @@ batadv_iv_ogm_neigh_dump_hardif(struct sk_buff *msg, u32 portid, u32 seq, * batadv_iv_ogm_neigh_dump() - Dump the neighbours into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @single_hardif: Limit dump to this hard interface */ static void @@ -2134,6 +2131,7 @@ batadv_iv_ogm_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_hard_iface *single_hardif) { struct batadv_hard_iface *hard_iface; + struct list_head *iter; int i_hardif = 0; int i_hardif_s = cb->args[0]; int idx = cb->args[1]; @@ -2150,11 +2148,7 @@ batadv_iv_ogm_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, i_hardif++; } } else { - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, - list) { - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (i_hardif++ < i_hardif_s) continue; @@ -2236,7 +2230,7 @@ static void batadv_iv_iface_enabled(struct batadv_hard_iface *hard_iface) /** * batadv_iv_init_sel_class() - initialize GW selection class - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_iv_init_sel_class(struct batadv_priv *bat_priv) { @@ -2391,7 +2385,7 @@ out: * @msg: Netlink message to dump into * @portid: Port making netlink request * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @gw_node: Gateway to be dumped * * Return: Error code, or 0 on success @@ -2466,7 +2460,7 @@ out: * batadv_iv_gw_dump() - Dump gateways into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information */ static void batadv_iv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_priv *bat_priv) diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index ac11f1f08db0..de9444714264 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -43,7 +43,7 @@ static void batadv_v_iface_activate(struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); struct batadv_hard_iface *primary_if; primary_if = batadv_primary_if_get_selected(bat_priv); @@ -97,7 +97,7 @@ static void batadv_v_primary_iface_set(struct batadv_hard_iface *hard_iface) */ static void batadv_v_iface_update_mac(struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); struct batadv_hard_iface *primary_if; primary_if = batadv_primary_if_get_selected(bat_priv); @@ -113,8 +113,6 @@ static void batadv_v_hardif_neigh_init(struct batadv_hardif_neigh_node *hardif_neigh) { ewma_throughput_init(&hardif_neigh->bat_v.throughput); - INIT_WORK(&hardif_neigh->bat_v.metric_work, - batadv_v_elp_throughput_metric_update); } /** @@ -168,7 +166,7 @@ batadv_v_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @hard_iface: The hard interface to be dumped * @idx_s: Entries to be skipped * @@ -205,7 +203,7 @@ batadv_v_neigh_dump_hardif(struct sk_buff *msg, u32 portid, u32 seq, * message * @msg: Netlink message to dump into * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @single_hardif: Limit dumping to this hard interface */ static void @@ -214,6 +212,7 @@ batadv_v_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_hard_iface *single_hardif) { struct batadv_hard_iface *hard_iface; + struct list_head *iter; int i_hardif = 0; int i_hardif_s = cb->args[0]; int idx = cb->args[1]; @@ -229,10 +228,7 @@ batadv_v_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, i_hardif++; } } else { - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (i_hardif++ < i_hardif_s) continue; @@ -256,7 +252,7 @@ batadv_v_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @if_outgoing: Limit dump to entries with this outgoing interface * @orig_node: Originator to dump * @neigh_node: Single hops neighbour @@ -324,7 +320,7 @@ batadv_v_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @if_outgoing: Limit dump to entries with this outgoing interface * @orig_node: Originator to dump * @sub_s: Number of sub entries to skip @@ -376,7 +372,7 @@ batadv_v_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @if_outgoing: Limit dump to entries with this outgoing interface * @head: Bucket to be dumped * @idx_s: Number of entries to be skipped @@ -416,7 +412,7 @@ batadv_v_orig_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq, * batadv_v_orig_dump() - Dump the originators into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @if_outgoing: Limit dump to entries with this outgoing interface */ static void @@ -504,7 +500,7 @@ err_ifinfo1: /** * batadv_v_init_sel_class() - initialize GW selection class - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_v_init_sel_class(struct batadv_priv *bat_priv) { @@ -555,7 +551,7 @@ out: /** * batadv_v_gw_get_best_gw_node() - retrieve the best GW node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: the GW node having the best GW-metric, NULL if no GW is known */ @@ -592,7 +588,7 @@ next: /** * batadv_v_gw_is_eligible() - check if a originator would be selected as GW - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @curr_gw_orig: originator representing the currently selected GW * @orig_node: the originator representing the new candidate * @@ -649,7 +645,7 @@ out: * @msg: Netlink message to dump into * @portid: Port making netlink request * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @gw_node: Gateway to be dumped * * Return: Error code, or 0 on success @@ -748,7 +744,7 @@ out: * batadv_v_gw_dump() - Dump gateways into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information */ static void batadv_v_gw_dump(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_priv *bat_priv) diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index 1d704574e6bf..cb16c1ed2a58 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -18,6 +18,7 @@ #include <linux/if_ether.h> #include <linux/jiffies.h> #include <linux/kref.h> +#include <linux/list.h> #include <linux/minmax.h> #include <linux/netdevice.h> #include <linux/nl80211.h> @@ -26,6 +27,7 @@ #include <linux/rcupdate.h> #include <linux/rtnetlink.h> #include <linux/skbuff.h> +#include <linux/slab.h> #include <linux/stddef.h> #include <linux/string.h> #include <linux/types.h> @@ -33,7 +35,6 @@ #include <net/cfg80211.h> #include <uapi/linux/batadv_packet.h> -#include "bat_algo.h" #include "bat_v_ogm.h" #include "hard-interface.h" #include "log.h" @@ -42,6 +43,18 @@ #include "send.h" /** + * struct batadv_v_metric_queue_entry - list of hardif neighbors which require + * and metric update + */ +struct batadv_v_metric_queue_entry { + /** @hardif_neigh: hardif neighbor scheduled for metric update */ + struct batadv_hardif_neigh_node *hardif_neigh; + + /** @list: list node for metric_queue */ + struct list_head list; +}; + +/** * batadv_v_elp_start_timer() - restart timer for ELP periodic work * @hard_iface: the interface for which the timer has to be reset */ @@ -59,25 +72,36 @@ static void batadv_v_elp_start_timer(struct batadv_hard_iface *hard_iface) /** * batadv_v_elp_get_throughput() - get the throughput towards a neighbour * @neigh: the neighbour for which the throughput has to be obtained + * @pthroughput: calculated throughput towards the given neighbour in multiples + * of 100kpbs (a value of '1' equals 0.1Mbps, '10' equals 1Mbps, etc). * - * Return: The throughput towards the given neighbour in multiples of 100kpbs - * (a value of '1' equals 0.1Mbps, '10' equals 1Mbps, etc). + * Return: true when value behind @pthroughput was set */ -static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) +static bool batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh, + u32 *pthroughput) { struct batadv_hard_iface *hard_iface = neigh->if_incoming; + struct net_device *mesh_iface = hard_iface->mesh_iface; struct ethtool_link_ksettings link_settings; struct net_device *real_netdev; struct station_info sinfo; u32 throughput; int ret; + /* don't query throughput when no longer associated with any + * batman-adv interface + */ + if (!mesh_iface) + return false; + /* if the user specified a customised value for this interface, then * return it directly */ throughput = atomic_read(&hard_iface->bat_v.throughput_override); - if (throughput != 0) - return throughput; + if (throughput != 0) { + *pthroughput = throughput; + return true; + } /* if this is a wireless device, then ask its throughput through * cfg80211 API @@ -104,27 +128,39 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) * possible to delete this neighbor. For now set * the throughput metric to 0. */ - return 0; + *pthroughput = 0; + return true; } if (ret) goto default_throughput; - if (sinfo.filled & BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT)) - return sinfo.expected_throughput / 100; + if (sinfo.filled & BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT)) { + *pthroughput = sinfo.expected_throughput / 100; + return true; + } /* try to estimate the expected throughput based on reported tx * rates */ - if (sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE)) - return cfg80211_calculate_bitrate(&sinfo.txrate) / 3; + if (sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE)) { + *pthroughput = cfg80211_calculate_bitrate(&sinfo.txrate) / 3; + return true; + } goto default_throughput; } + /* only use rtnl_trylock because the elp worker will be cancelled while + * the rntl_lock is held. the cancel_delayed_work_sync() would otherwise + * wait forever when the elp work_item was started and it is then also + * trying to rtnl_lock + */ + if (!rtnl_trylock()) + return false; + /* if not a wifi interface, check if this device provides data via * ethtool (e.g. an Ethernet adapter) */ - rtnl_lock(); ret = __ethtool_get_link_ksettings(hard_iface->net_dev, &link_settings); rtnl_unlock(); if (ret == 0) { @@ -135,13 +171,15 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) hard_iface->bat_v.flags &= ~BATADV_FULL_DUPLEX; throughput = link_settings.base.speed; - if (throughput && throughput != SPEED_UNKNOWN) - return throughput * 10; + if (throughput && throughput != SPEED_UNKNOWN) { + *pthroughput = throughput * 10; + return true; + } } default_throughput: if (!(hard_iface->bat_v.flags & BATADV_WARNING_DEFAULT)) { - batadv_info(hard_iface->soft_iface, + batadv_info(mesh_iface, "WiFi driver or ethtool info does not provide information about link speeds on interface %s, therefore defaulting to hardcoded throughput values of %u.%1u Mbps. Consider overriding the throughput manually or checking your driver.\n", hard_iface->net_dev->name, BATADV_THROUGHPUT_DEFAULT_VALUE / 10, @@ -150,31 +188,26 @@ default_throughput: } /* if none of the above cases apply, return the base_throughput */ - return BATADV_THROUGHPUT_DEFAULT_VALUE; + *pthroughput = BATADV_THROUGHPUT_DEFAULT_VALUE; + return true; } /** * batadv_v_elp_throughput_metric_update() - worker updating the throughput * metric of a single hop neighbour - * @work: the work queue item + * @neigh: the neighbour to probe */ -void batadv_v_elp_throughput_metric_update(struct work_struct *work) +static void +batadv_v_elp_throughput_metric_update(struct batadv_hardif_neigh_node *neigh) { - struct batadv_hardif_neigh_node_bat_v *neigh_bat_v; - struct batadv_hardif_neigh_node *neigh; - - neigh_bat_v = container_of(work, struct batadv_hardif_neigh_node_bat_v, - metric_work); - neigh = container_of(neigh_bat_v, struct batadv_hardif_neigh_node, - bat_v); + u32 throughput; + bool valid; - ewma_throughput_add(&neigh->bat_v.throughput, - batadv_v_elp_get_throughput(neigh)); + valid = batadv_v_elp_get_throughput(neigh, &throughput); + if (!valid) + return; - /* decrement refcounter to balance increment performed before scheduling - * this task - */ - batadv_hardif_neigh_put(neigh); + ewma_throughput_add(&neigh->bat_v.throughput, throughput); } /** @@ -192,7 +225,7 @@ static bool batadv_v_elp_wifi_neigh_probe(struct batadv_hardif_neigh_node *neigh) { struct batadv_hard_iface *hard_iface = neigh->if_incoming; - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); unsigned long last_tx_diff; struct sk_buff *skb; int probe_len, i; @@ -248,18 +281,20 @@ batadv_v_elp_wifi_neigh_probe(struct batadv_hardif_neigh_node *neigh) */ static void batadv_v_elp_periodic_work(struct work_struct *work) { + struct batadv_v_metric_queue_entry *metric_entry; + struct batadv_v_metric_queue_entry *metric_safe; struct batadv_hardif_neigh_node *hardif_neigh; struct batadv_hard_iface *hard_iface; struct batadv_hard_iface_bat_v *bat_v; struct batadv_elp_packet *elp_packet; + struct list_head metric_queue; struct batadv_priv *bat_priv; struct sk_buff *skb; u32 elp_interval; - bool ret; bat_v = container_of(work, struct batadv_hard_iface_bat_v, elp_wq.work); hard_iface = container_of(bat_v, struct batadv_hard_iface, bat_v); - bat_priv = netdev_priv(hard_iface->soft_iface); + bat_priv = netdev_priv(hard_iface->mesh_iface); if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_DEACTIVATING) goto out; @@ -291,6 +326,8 @@ static void batadv_v_elp_periodic_work(struct work_struct *work) atomic_inc(&hard_iface->bat_v.elp_seqno); + INIT_LIST_HEAD(&metric_queue); + /* The throughput metric is updated on each sent packet. This way, if a * node is dead and no longer sends packets, batman-adv is still able to * react timely to its death. @@ -315,16 +352,28 @@ static void batadv_v_elp_periodic_work(struct work_struct *work) /* Reading the estimated throughput from cfg80211 is a task that * may sleep and that is not allowed in an rcu protected - * context. Therefore schedule a task for that. + * context. Therefore add it to metric_queue and process it + * outside rcu protected context. */ - ret = queue_work(batadv_event_workqueue, - &hardif_neigh->bat_v.metric_work); - - if (!ret) + metric_entry = kzalloc(sizeof(*metric_entry), GFP_ATOMIC); + if (!metric_entry) { batadv_hardif_neigh_put(hardif_neigh); + continue; + } + + metric_entry->hardif_neigh = hardif_neigh; + list_add(&metric_entry->list, &metric_queue); } rcu_read_unlock(); + list_for_each_entry_safe(metric_entry, metric_safe, &metric_queue, list) { + batadv_v_elp_throughput_metric_update(metric_entry->hardif_neigh); + + batadv_hardif_neigh_put(metric_entry->hardif_neigh); + list_del(&metric_entry->list); + kfree(metric_entry); + } + restart_timer: batadv_v_elp_start_timer(hard_iface); out: @@ -422,21 +471,18 @@ void batadv_v_elp_iface_activate(struct batadv_hard_iface *primary_iface, void batadv_v_elp_primary_iface_set(struct batadv_hard_iface *primary_iface) { struct batadv_hard_iface *hard_iface; + struct list_head *iter; /* update orig field of every elp iface belonging to this mesh */ rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (primary_iface->soft_iface != hard_iface->soft_iface) - continue; - + netdev_for_each_lower_private_rcu(primary_iface->mesh_iface, hard_iface, iter) batadv_v_elp_iface_activate(primary_iface, hard_iface); - } rcu_read_unlock(); } /** * batadv_v_elp_neigh_update() - update an ELP neighbour node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @neigh_addr: the neighbour interface address * @if_incoming: the interface the packet was received through * @elp_packet: the received ELP packet @@ -502,7 +548,7 @@ orig_free: int batadv_v_elp_packet_recv(struct sk_buff *skb, struct batadv_hard_iface *if_incoming) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct batadv_elp_packet *elp_packet; struct batadv_hard_iface *primary_if; struct ethhdr *ethhdr; diff --git a/net/batman-adv/bat_v_elp.h b/net/batman-adv/bat_v_elp.h index 9e2740195fa2..c9cb0a307100 100644 --- a/net/batman-adv/bat_v_elp.h +++ b/net/batman-adv/bat_v_elp.h @@ -10,7 +10,6 @@ #include "main.h" #include <linux/skbuff.h> -#include <linux/workqueue.h> int batadv_v_elp_iface_enable(struct batadv_hard_iface *hard_iface); void batadv_v_elp_iface_disable(struct batadv_hard_iface *hard_iface); @@ -19,6 +18,5 @@ void batadv_v_elp_iface_activate(struct batadv_hard_iface *primary_iface, void batadv_v_elp_primary_iface_set(struct batadv_hard_iface *primary_iface); int batadv_v_elp_packet_recv(struct sk_buff *skb, struct batadv_hard_iface *if_incoming); -void batadv_v_elp_throughput_metric_update(struct work_struct *work); #endif /* _NET_BATMAN_ADV_BAT_V_ELP_H_ */ diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c index e503ee0d896b..e3870492dab7 100644 --- a/net/batman-adv/bat_v_ogm.c +++ b/net/batman-adv/bat_v_ogm.c @@ -22,7 +22,6 @@ #include <linux/mutex.h> #include <linux/netdevice.h> #include <linux/random.h> -#include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/skbuff.h> #include <linux/slab.h> @@ -33,7 +32,6 @@ #include <linux/workqueue.h> #include <uapi/linux/batadv_packet.h> -#include "bat_algo.h" #include "hard-interface.h" #include "hash.h" #include "log.h" @@ -45,7 +43,7 @@ /** * batadv_v_ogm_orig_get() - retrieve and possibly create an originator node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the address of the originator * * Return: the orig_node corresponding to the specified address. If such an @@ -96,7 +94,7 @@ static void batadv_v_ogm_start_queue_timer(struct batadv_hard_iface *hard_iface) /** * batadv_v_ogm_start_timer() - restart the OGM sending timer - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_v_ogm_start_timer(struct batadv_priv *bat_priv) { @@ -121,7 +119,7 @@ static void batadv_v_ogm_start_timer(struct batadv_priv *bat_priv) static void batadv_v_ogm_send_to_if(struct sk_buff *skb, struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); if (hard_iface->if_status != BATADV_IF_ACTIVE) { kfree_skb(skb); @@ -239,7 +237,7 @@ static void batadv_v_ogm_aggr_send(struct batadv_hard_iface *hard_iface) static void batadv_v_ogm_queue_on_if(struct sk_buff *skb, struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); if (!atomic_read(&bat_priv->aggregated_ogms)) { batadv_v_ogm_send_to_if(skb, hard_iface); @@ -256,15 +254,16 @@ static void batadv_v_ogm_queue_on_if(struct sk_buff *skb, } /** - * batadv_v_ogm_send_softif() - periodic worker broadcasting the own OGM - * @bat_priv: the bat priv with all the soft interface information + * batadv_v_ogm_send_meshif() - periodic worker broadcasting the own OGM + * @bat_priv: the bat priv with all the mesh interface information */ -static void batadv_v_ogm_send_softif(struct batadv_priv *bat_priv) +static void batadv_v_ogm_send_meshif(struct batadv_priv *bat_priv) { struct batadv_hard_iface *hard_iface; struct batadv_ogm2_packet *ogm_packet; struct sk_buff *skb, *skb_tmp; unsigned char *ogm_buff; + struct list_head *iter; int ogm_buff_len; u16 tvlv_len = 0; int ret; @@ -301,10 +300,7 @@ static void batadv_v_ogm_send_softif(struct batadv_priv *bat_priv) /* broadcast on every interface */ rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (!kref_get_unless_zero(&hard_iface->refcount)) continue; @@ -373,7 +369,7 @@ static void batadv_v_ogm_send(struct work_struct *work) bat_priv = container_of(bat_v, struct batadv_priv, bat_v); mutex_lock(&bat_priv->bat_v.ogm_buff_mutex); - batadv_v_ogm_send_softif(bat_priv); + batadv_v_ogm_send_meshif(bat_priv); mutex_unlock(&bat_priv->bat_v.ogm_buff_mutex); } @@ -408,7 +404,7 @@ void batadv_v_ogm_aggr_work(struct work_struct *work) */ int batadv_v_ogm_iface_enable(struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); batadv_v_ogm_start_queue_timer(hard_iface); batadv_v_ogm_start_timer(bat_priv); @@ -435,7 +431,7 @@ void batadv_v_ogm_iface_disable(struct batadv_hard_iface *hard_iface) */ void batadv_v_ogm_primary_iface_set(struct batadv_hard_iface *primary_iface) { - struct batadv_priv *bat_priv = netdev_priv(primary_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(primary_iface->mesh_iface); struct batadv_ogm2_packet *ogm_packet; mutex_lock(&bat_priv->bat_v.ogm_buff_mutex); @@ -452,7 +448,7 @@ unlock: /** * batadv_v_forward_penalty() - apply a penalty to the throughput metric * forwarded with B.A.T.M.A.N. V OGMs - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @if_incoming: the interface where the OGM has been received * @if_outgoing: the interface where the OGM has to be forwarded to * @throughput: the current throughput @@ -505,7 +501,7 @@ static u32 batadv_v_forward_penalty(struct batadv_priv *bat_priv, /** * batadv_v_ogm_forward() - check conditions and forward an OGM to the given * outgoing interface - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ogm_received: previously received OGM to be forwarded * @orig_node: the originator which has been updated * @neigh_node: the neigh_node through with the OGM has been received @@ -592,7 +588,7 @@ out: /** * batadv_v_ogm_metric_update() - update route metric based on OGM - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ogm2: OGM2 structure * @orig_node: Originator structure for which the OGM has been received * @neigh_node: the neigh_node through with the OGM has been received @@ -675,7 +671,7 @@ out: /** * batadv_v_ogm_route_update() - update routes based on OGM - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ethhdr: the Ethernet header of the OGM2 * @ogm2: OGM2 structure * @orig_node: Originator structure for which the OGM has been received @@ -770,7 +766,7 @@ out: /** * batadv_v_ogm_process_per_outif() - process a batman v OGM for an outgoing if - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ethhdr: the Ethernet header of the OGM2 * @ogm2: OGM2 structure * @orig_node: Originator structure for which the OGM has been received @@ -839,8 +835,7 @@ batadv_v_ogm_aggr_packet(int buff_pos, int packet_len, /* check if there is enough space for the optional TVLV */ next_buff_pos += ntohs(ogm2_packet->tvlv_len); - return (next_buff_pos <= packet_len) && - (next_buff_pos <= BATADV_MAX_AGGREGATION_BYTES); + return next_buff_pos <= packet_len; } /** @@ -852,7 +847,7 @@ batadv_v_ogm_aggr_packet(int buff_pos, int packet_len, static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, struct batadv_hard_iface *if_incoming) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct ethhdr *ethhdr; struct batadv_orig_node *orig_node = NULL; struct batadv_hardif_neigh_node *hardif_neigh = NULL; @@ -860,6 +855,7 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, struct batadv_hard_iface *hard_iface; struct batadv_ogm2_packet *ogm_packet; u32 ogm_throughput, link_throughput, path_throughput; + struct list_head *iter; int ret; ethhdr = eth_hdr(skb); @@ -922,13 +918,10 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, BATADV_IF_DEFAULT); rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (hard_iface->if_status != BATADV_IF_ACTIVE) continue; - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - if (!kref_get_unless_zero(&hard_iface->refcount)) continue; @@ -985,7 +978,7 @@ out: int batadv_v_ogm_packet_recv(struct sk_buff *skb, struct batadv_hard_iface *if_incoming) { - struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(if_incoming->mesh_iface); struct batadv_ogm2_packet *ogm_packet; struct ethhdr *ethhdr; int ogm_offset; @@ -1036,7 +1029,7 @@ free_skb: /** * batadv_v_ogm_init() - initialise the OGM2 engine - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 on success or a negative error code in case of failure */ @@ -1071,7 +1064,7 @@ int batadv_v_ogm_init(struct batadv_priv *bat_priv) /** * batadv_v_ogm_free() - free OGM private resources - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_v_ogm_free(struct batadv_priv *bat_priv) { diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c index 649c41f393e1..2c49b2711650 100644 --- a/net/batman-adv/bitarray.c +++ b/net/batman-adv/bitarray.c @@ -23,7 +23,7 @@ static void batadv_bitmap_shift_left(unsigned long *seq_bits, s32 n) /** * batadv_bit_get_packet() - receive and process one packet within the sequence * number window - * @priv: the bat priv with all the soft interface information + * @priv: the bat priv with all the mesh interface information * @seq_bits: pointer to the sequence number receive packet * @seq_num_diff: difference between the current/received sequence number and * the last sequence number diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 5f46ca3d4bb8..3dc791c15bf7 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -12,6 +12,7 @@ #include <linux/compiler.h> #include <linux/container_of.h> #include <linux/crc16.h> +#include <linux/err.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -33,11 +34,11 @@ #include <linux/sprintf.h> #include <linux/stddef.h> #include <linux/string.h> +#include <linux/string_choices.h> #include <linux/workqueue.h> #include <net/arp.h> #include <net/genetlink.h> #include <net/netlink.h> -#include <net/sock.h> #include <uapi/linux/batadv_packet.h> #include <uapi/linux/batman_adv.h> @@ -46,7 +47,6 @@ #include "log.h" #include "netlink.h" #include "originator.h" -#include "soft-interface.h" #include "translation-table.h" static const u8 batadv_announce_mac[4] = {0x43, 0x05, 0x43, 0x05}; @@ -209,7 +209,7 @@ static void batadv_claim_put(struct batadv_bla_claim *claim) /** * batadv_claim_hash_find() - looks for a claim in the claim hash - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @data: search data (may be local/static data) * * Return: claim if found or NULL otherwise. @@ -248,7 +248,7 @@ batadv_claim_hash_find(struct batadv_priv *bat_priv, /** * batadv_backbone_hash_find() - looks for a backbone gateway in the hash - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the address of the originator * @vid: the VLAN ID * @@ -332,7 +332,7 @@ batadv_bla_del_backbone_claims(struct batadv_bla_backbone_gw *backbone_gw) /** * batadv_bla_send_claim() - sends a claim frame according to the provided info - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @mac: the mac address to be announced within the claim * @vid: the VLAN ID * @claimtype: the type of the claim (CLAIM, UNCLAIM, ANNOUNCE, ...) @@ -343,7 +343,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, const u8 *mac, struct sk_buff *skb; struct ethhdr *ethhdr; struct batadv_hard_iface *primary_if; - struct net_device *soft_iface; + struct net_device *mesh_iface; u8 *hw_src; struct batadv_bla_claim_dst local_claim_dest; __be32 zeroip = 0; @@ -356,12 +356,12 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, const u8 *mac, sizeof(local_claim_dest)); local_claim_dest.type = claimtype; - soft_iface = primary_if->soft_iface; + mesh_iface = primary_if->mesh_iface; skb = arp_create(ARPOP_REPLY, ETH_P_ARP, /* IP DST: 0.0.0.0 */ zeroip, - primary_if->soft_iface, + primary_if->mesh_iface, /* IP SRC: 0.0.0.0 */ zeroip, /* Ethernet DST: Broadcast */ @@ -439,7 +439,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, const u8 *mac, } skb_reset_mac_header(skb); - skb->protocol = eth_type_trans(skb, soft_iface); + skb->protocol = eth_type_trans(skb, mesh_iface); batadv_inc_counter(bat_priv, BATADV_CNT_RX); batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES, skb->len + ETH_HLEN); @@ -466,7 +466,7 @@ static void batadv_bla_loopdetect_report(struct work_struct *work) report_work); bat_priv = backbone_gw->bat_priv; - batadv_info(bat_priv->soft_iface, + batadv_info(bat_priv->mesh_iface, "Possible loop on VLAN %d detected which can't be handled by BLA - please check your network setup!\n", batadv_print_vid(backbone_gw->vid)); snprintf(vid_str, sizeof(vid_str), "%d", @@ -481,7 +481,7 @@ static void batadv_bla_loopdetect_report(struct work_struct *work) /** * batadv_bla_get_backbone_gw() - finds or creates a backbone gateway - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the mac address of the originator * @vid: the VLAN ID * @own_backbone: set if the requested backbone is local @@ -554,7 +554,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, const u8 *orig, /** * batadv_bla_update_own_backbone_gw() - updates the own backbone gw for a VLAN - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @primary_if: the selected primary interface * @vid: VLAN identifier * @@ -580,7 +580,7 @@ batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv, /** * batadv_bla_answer_request() - answer a bla request by sending own claims - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @primary_if: interface where the request came on * @vid: the vid where the request came on * @@ -657,7 +657,7 @@ static void batadv_bla_send_request(struct batadv_bla_backbone_gw *backbone_gw) /** * batadv_bla_send_announce() - Send an announcement frame - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @backbone_gw: our backbone gateway which should be announced */ static void batadv_bla_send_announce(struct batadv_priv *bat_priv, @@ -678,7 +678,7 @@ static void batadv_bla_send_announce(struct batadv_priv *bat_priv, /** * batadv_bla_add_claim() - Adds a claim in the claim hash - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @mac: the mac address of the claim * @vid: the VLAN ID of the frame * @backbone_gw: the backbone gateway which claims it @@ -788,7 +788,7 @@ batadv_bla_claim_get_backbone_gw(struct batadv_bla_claim *claim) /** * batadv_bla_del_claim() - delete a claim from the claim hash - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @mac: mac address of the claim to be removed * @vid: VLAN id for the claim to be removed */ @@ -826,7 +826,7 @@ free_claim: /** * batadv_handle_announce() - check for ANNOUNCE frame - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @an_addr: announcement mac address (ARP Sender HW address) * @backbone_addr: originator address of the sender (Ethernet source MAC) * @vid: the VLAN ID of the frame @@ -884,8 +884,8 @@ static bool batadv_handle_announce(struct batadv_priv *bat_priv, u8 *an_addr, /** * batadv_handle_request() - check for REQUEST frame - * @bat_priv: the bat priv with all the soft interface information - * @primary_if: the primary hard interface of this batman soft interface + * @bat_priv: the bat priv with all the mesh interface information + * @primary_if: the primary hard interface of this batman mesh interface * @backbone_addr: backbone address to be requested (ARP sender HW MAC) * @ethhdr: ethernet header of a packet * @vid: the VLAN ID of the frame @@ -917,8 +917,8 @@ static bool batadv_handle_request(struct batadv_priv *bat_priv, /** * batadv_handle_unclaim() - check for UNCLAIM frame - * @bat_priv: the bat priv with all the soft interface information - * @primary_if: the primary hard interface of this batman soft interface + * @bat_priv: the bat priv with all the mesh interface information + * @primary_if: the primary hard interface of this batman mesh interface * @backbone_addr: originator address of the backbone (Ethernet source) * @claim_addr: Client to be unclaimed (ARP sender HW MAC) * @vid: the VLAN ID of the frame @@ -955,8 +955,8 @@ static bool batadv_handle_unclaim(struct batadv_priv *bat_priv, /** * batadv_handle_claim() - check for CLAIM frame - * @bat_priv: the bat priv with all the soft interface information - * @primary_if: the primary hard interface of this batman soft interface + * @bat_priv: the bat priv with all the mesh interface information + * @primary_if: the primary hard interface of this batman mesh interface * @backbone_addr: originator address of the backbone (Ethernet Source) * @claim_addr: client mac address to be claimed (ARP sender HW MAC) * @vid: the VLAN ID of the frame @@ -992,7 +992,7 @@ static bool batadv_handle_claim(struct batadv_priv *bat_priv, /** * batadv_check_claim_group() - check for claim group membership - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @primary_if: the primary interface of this batman interface * @hw_src: the Hardware source in the ARP Header * @hw_dst: the Hardware destination in the ARP Header @@ -1067,8 +1067,8 @@ static int batadv_check_claim_group(struct batadv_priv *bat_priv, /** * batadv_bla_process_claim() - Check if this is a claim frame, and process it - * @bat_priv: the bat priv with all the soft interface information - * @primary_if: the primary hard interface of this batman soft interface + * @bat_priv: the bat priv with all the mesh interface information + * @primary_if: the primary hard interface of this batman mesh interface * @skb: the frame to be checked * * Return: true if it was a claim frame, otherwise return false to @@ -1210,7 +1210,7 @@ static bool batadv_bla_process_claim(struct batadv_priv *bat_priv, /** * batadv_bla_purge_backbone_gw() - Remove backbone gateways after a timeout or * immediately - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @now: whether the whole hash shall be wiped now * * Check when we last heard from other nodes, and remove them in case of @@ -1262,7 +1262,7 @@ purge_now: /** * batadv_bla_purge_claims() - Remove claims after a timeout or immediately - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @primary_if: the selected primary interface, may be NULL if now is set * @now: whether the whole hash shall be wiped now * @@ -1321,7 +1321,7 @@ skip: /** * batadv_bla_update_orig_address() - Update the backbone gateways when the own * originator address changes - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @primary_if: the new selected primary_if * @oldif: the old primary interface, may be NULL */ @@ -1376,7 +1376,7 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv, /** * batadv_bla_send_loopdetect() - send a loopdetect frame - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @backbone_gw: the backbone gateway for which a loop should be detected * * To detect loops that the bridge loop avoidance can't handle, send a loop @@ -1396,7 +1396,7 @@ batadv_bla_send_loopdetect(struct batadv_priv *bat_priv, /** * batadv_bla_status_update() - purge bla interfaces if necessary - * @net_dev: the soft interface net device + * @net_dev: the mesh interface net device */ void batadv_bla_status_update(struct net_device *net_dev) { @@ -1520,7 +1520,7 @@ static struct lock_class_key batadv_backbone_hash_lock_class_key; /** * batadv_bla_init() - initialize all bla structures - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 on success, < 0 on error. */ @@ -1586,10 +1586,9 @@ int batadv_bla_init(struct batadv_priv *bat_priv) /** * batadv_bla_check_duplist() - Check if a frame is in the broadcast dup. - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: contains the multicast packet to be checked - * @payload_ptr: pointer to position inside the head buffer of the skb - * marking the start of the data to be CRC'ed + * @payload_offset: offset in the skb, marking the start of the data to be CRC'ed * @orig: originator mac address, NULL if unknown * * Check if it is on our broadcast list. Another gateway might have sent the @@ -1604,16 +1603,18 @@ int batadv_bla_init(struct batadv_priv *bat_priv) * Return: true if a packet is in the duplicate list, false otherwise. */ static bool batadv_bla_check_duplist(struct batadv_priv *bat_priv, - struct sk_buff *skb, u8 *payload_ptr, + struct sk_buff *skb, int payload_offset, const u8 *orig) { struct batadv_bcast_duplist_entry *entry; bool ret = false; + int payload_len; int i, curr; - __be32 crc; + u32 crc; /* calculate the crc ... */ - crc = batadv_skb_crc32(skb, payload_ptr); + payload_len = skb->len - payload_offset; + crc = skb_crc32c(skb, payload_offset, payload_len, 0); spin_lock_bh(&bat_priv->bla.bcast_duplist_lock); @@ -1680,7 +1681,7 @@ out: /** * batadv_bla_check_ucast_duplist() - Check if a frame is in the broadcast dup. - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: contains the multicast packet to be checked, decapsulated from a * unicast_packet * @@ -1693,12 +1694,12 @@ out: static bool batadv_bla_check_ucast_duplist(struct batadv_priv *bat_priv, struct sk_buff *skb) { - return batadv_bla_check_duplist(bat_priv, skb, (u8 *)skb->data, NULL); + return batadv_bla_check_duplist(bat_priv, skb, 0, NULL); } /** * batadv_bla_check_bcast_duplist() - Check if a frame is in the broadcast dup. - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: contains the bcast_packet to be checked * * Check if it is on our broadcast list. Another gateway might have sent the @@ -1711,19 +1712,17 @@ bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, struct sk_buff *skb) { struct batadv_bcast_packet *bcast_packet; - u8 *payload_ptr; bcast_packet = (struct batadv_bcast_packet *)skb->data; - payload_ptr = (u8 *)(bcast_packet + 1); - return batadv_bla_check_duplist(bat_priv, skb, payload_ptr, + return batadv_bla_check_duplist(bat_priv, skb, sizeof(*bcast_packet), bcast_packet->orig); } /** * batadv_bla_is_backbone_gw_orig() - Check if the originator is a gateway for * the VLAN identified by vid. - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: originator mac address * @vid: VLAN identifier * @@ -1766,7 +1765,7 @@ bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig, * @orig_node: the orig_node of the frame * @hdr_size: maximum length of the frame * - * Return: true if the orig_node is also a gateway on the soft interface, + * Return: true if the orig_node is also a gateway on the mesh interface, * otherwise it returns false. */ bool batadv_bla_is_backbone_gw(struct sk_buff *skb, @@ -1796,9 +1795,9 @@ bool batadv_bla_is_backbone_gw(struct sk_buff *skb, /** * batadv_bla_free() - free all bla structures - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * - * for softinterface free or module unload + * for meshinterface free or module unload */ void batadv_bla_free(struct batadv_priv *bat_priv) { @@ -1822,7 +1821,7 @@ void batadv_bla_free(struct batadv_priv *bat_priv) /** * batadv_bla_loopdetect_check() - check and handle a detected loop - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the packet to check * @primary_if: interface where the request came on * @vid: the VLAN ID of the frame @@ -1877,7 +1876,7 @@ batadv_bla_loopdetect_check(struct batadv_priv *bat_priv, struct sk_buff *skb, /** * batadv_bla_rx() - check packets coming from the mesh. - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the frame to be checked * @vid: the VLAN ID of the frame * @packet_type: the batman packet type this frame came in @@ -1946,16 +1945,15 @@ bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, claim = batadv_claim_hash_find(bat_priv, &search_claim); if (!claim) { + bool local = batadv_is_my_client(bat_priv, ethhdr->h_source, vid); + /* possible optimization: race for a claim */ /* No claim exists yet, claim it for us! */ batadv_dbg(BATADV_DBG_BLA, bat_priv, "%s(): Unclaimed MAC %pM found. Claim it. Local: %s\n", - __func__, ethhdr->h_source, - batadv_is_my_client(bat_priv, - ethhdr->h_source, vid) ? - "yes" : "no"); + __func__, ethhdr->h_source, str_yes_no(local)); batadv_handle_claim(bat_priv, primary_if, primary_if->net_dev->dev_addr, ethhdr->h_source, vid); @@ -2011,7 +2009,7 @@ out: /** * batadv_bla_tx() - check packets going into the mesh - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the frame to be checked * @vid: the VLAN ID of the frame * @@ -2233,27 +2231,18 @@ int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb) { struct batadv_hard_iface *primary_if = NULL; int portid = NETLINK_CB(cb->skb).portid; - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; + struct net_device *mesh_iface; struct batadv_hashtable *hash; struct batadv_priv *bat_priv; int bucket = cb->args[0]; int idx = cb->args[1]; - int ifindex; int ret = 0; - ifindex = batadv_netlink_get_ifindex(cb->nlh, - BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; - - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); hash = bat_priv->bla.claim_hash; primary_if = batadv_primary_if_get_selected(bat_priv); @@ -2277,7 +2266,7 @@ int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb) out: batadv_hardif_put(primary_if); - dev_put(soft_iface); + dev_put(mesh_iface); return ret; } @@ -2403,27 +2392,18 @@ int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb) { struct batadv_hard_iface *primary_if = NULL; int portid = NETLINK_CB(cb->skb).portid; - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; + struct net_device *mesh_iface; struct batadv_hashtable *hash; struct batadv_priv *bat_priv; int bucket = cb->args[0]; int idx = cb->args[1]; - int ifindex; int ret = 0; - ifindex = batadv_netlink_get_ifindex(cb->nlh, - BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; - - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); hash = bat_priv->bla.backbone_hash; primary_if = batadv_primary_if_get_selected(bat_priv); @@ -2447,7 +2427,7 @@ int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb) out: batadv_hardif_put(primary_if); - dev_put(soft_iface); + dev_put(mesh_iface); return ret; } @@ -2456,7 +2436,7 @@ out: /** * batadv_bla_check_claim() - check if address is claimed * - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: mac address of which the claim status is checked * @vid: the VLAN ID * diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index 4c7e85534324..8b8132eb0a79 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -7,11 +7,11 @@ #include "distributed-arp-table.h" #include "main.h" -#include <asm/unaligned.h> #include <linux/atomic.h> #include <linux/bitops.h> #include <linux/byteorder/generic.h> #include <linux/container_of.h> +#include <linux/err.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -32,11 +32,11 @@ #include <linux/stddef.h> #include <linux/string.h> #include <linux/udp.h> +#include <linux/unaligned.h> #include <linux/workqueue.h> #include <net/arp.h> #include <net/genetlink.h> #include <net/netlink.h> -#include <net/sock.h> #include <uapi/linux/batman_adv.h> #include "bridge_loop_avoidance.h" @@ -46,7 +46,6 @@ #include "netlink.h" #include "originator.h" #include "send.h" -#include "soft-interface.h" #include "translation-table.h" #include "tvlv.h" @@ -97,7 +96,7 @@ static void batadv_dat_purge(struct work_struct *work); /** * batadv_dat_start_timer() - initialise the DAT periodic worker - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_dat_start_timer(struct batadv_priv *bat_priv) { @@ -146,7 +145,7 @@ static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry) /** * __batadv_dat_purge() - delete entries from the DAT local storage - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @to_purge: function in charge to decide whether an entry has to be purged or * not. This function takes the dat_entry as argument and has to * returns a boolean value: true is the entry has to be deleted, @@ -316,7 +315,7 @@ static u32 batadv_hash_dat(const void *data, u32 size) /** * batadv_dat_entry_hash_find() - look for a given dat_entry in the local hash * table - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ip: search key * @vid: VLAN identifier * @@ -358,7 +357,7 @@ batadv_dat_entry_hash_find(struct batadv_priv *bat_priv, __be32 ip, /** * batadv_dat_entry_add() - add a new dat entry or update it if already exists - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ip: ipv4 to add/edit * @mac_addr: mac address to assign to the given ipv4 * @vid: VLAN identifier @@ -415,7 +414,7 @@ out: /** * batadv_dbg_arp() - print a debug message containing all the ARP packet * details - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: ARP packet * @hdr_size: size of the possible header before the ARP packet * @msg: message to print together with the debugging information @@ -550,7 +549,7 @@ out: /** * batadv_choose_next_candidate() - select the next DHT candidate - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @cands: candidates array * @select: number of candidates already present in the array * @ip_key: key to look up in the DHT @@ -614,7 +613,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv, /** * batadv_dat_select_candidates() - select the nodes which the DHT message has * to be sent to - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ip_dst: ipv4 to look up in the DHT * @vid: VLAN identifier * @@ -659,7 +658,7 @@ batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst, /** * batadv_dat_forward_data() - copy and send payload to the selected candidates - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: payload to send * @ip: the DHT key * @vid: VLAN identifier @@ -735,7 +734,7 @@ free_orig: /** * batadv_dat_tvlv_container_update() - update the dat tvlv container after dat * setting change - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_dat_tvlv_container_update(struct batadv_priv *bat_priv) { @@ -757,7 +756,7 @@ static void batadv_dat_tvlv_container_update(struct batadv_priv *bat_priv) /** * batadv_dat_status_update() - update the dat tvlv container after dat * setting change - * @net_dev: the soft interface net device + * @net_dev: the mesh interface net device */ void batadv_dat_status_update(struct net_device *net_dev) { @@ -768,7 +767,7 @@ void batadv_dat_status_update(struct net_device *net_dev) /** * batadv_dat_tvlv_ogm_handler_v1() - process incoming dat tvlv container - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) * @tvlv_value: tvlv buffer containing the gateway data @@ -787,7 +786,7 @@ static void batadv_dat_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, /** * batadv_dat_hash_free() - free the local DAT hash table - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_dat_hash_free(struct batadv_priv *bat_priv) { @@ -803,7 +802,7 @@ static void batadv_dat_hash_free(struct batadv_priv *bat_priv) /** * batadv_dat_init() - initialise the DAT internals - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 in case of success, a negative error code otherwise */ @@ -829,7 +828,7 @@ int batadv_dat_init(struct batadv_priv *bat_priv) /** * batadv_dat_free() - free the DAT internals - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_dat_free(struct batadv_priv *bat_priv) { @@ -937,27 +936,18 @@ int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb) { struct batadv_hard_iface *primary_if = NULL; int portid = NETLINK_CB(cb->skb).portid; - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; + struct net_device *mesh_iface; struct batadv_hashtable *hash; struct batadv_priv *bat_priv; int bucket = cb->args[0]; int idx = cb->args[1]; - int ifindex; int ret = 0; - ifindex = batadv_netlink_get_ifindex(cb->nlh, - BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; - - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); hash = bat_priv->dat.hash; primary_if = batadv_primary_if_get_selected(bat_priv); @@ -983,14 +973,14 @@ int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb) out: batadv_hardif_put(primary_if); - dev_put(soft_iface); + dev_put(mesh_iface); return ret; } /** * batadv_arp_get_type() - parse an ARP packet and gets the type - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: packet to analyse * @hdr_size: size of the possible header before the ARP packet in the skb * @@ -1090,7 +1080,7 @@ static unsigned short batadv_dat_get_vid(struct sk_buff *skb, int *hdr_size) /** * batadv_dat_arp_create_reply() - create an ARP Reply - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ip_src: ARP sender IP * @ip_dst: ARP target IP * @hw_src: Ethernet source and ARP sender MAC @@ -1109,7 +1099,7 @@ batadv_dat_arp_create_reply(struct batadv_priv *bat_priv, __be32 ip_src, { struct sk_buff *skb; - skb = arp_create(ARPOP_REPLY, ETH_P_ARP, ip_dst, bat_priv->soft_iface, + skb = arp_create(ARPOP_REPLY, ETH_P_ARP, ip_dst, bat_priv->mesh_iface, ip_src, hw_dst, hw_src, hw_dst); if (!skb) return NULL; @@ -1126,7 +1116,7 @@ batadv_dat_arp_create_reply(struct batadv_priv *bat_priv, __be32 ip_src, /** * batadv_dat_snoop_outgoing_arp_request() - snoop the ARP request and try to * answer using DAT - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: packet to check * * Return: true if the message has been sent to the dht candidates, false @@ -1142,7 +1132,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv, bool ret = false; struct batadv_dat_entry *dat_entry = NULL; struct sk_buff *skb_new; - struct net_device *soft_iface = bat_priv->soft_iface; + struct net_device *mesh_iface = bat_priv->mesh_iface; int hdr_size = 0; unsigned short vid; @@ -1172,7 +1162,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv, * client will answer itself. DAT would only generate a * duplicate packet. * - * Moreover, if the soft-interface is enslaved into a bridge, an + * Moreover, if the mesh-interface is enslaved into a bridge, an * additional DAT answer may trigger kernel warnings about * a packet coming from the wrong port. */ @@ -1201,7 +1191,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv, if (!skb_new) goto out; - skb_new->protocol = eth_type_trans(skb_new, soft_iface); + skb_new->protocol = eth_type_trans(skb_new, mesh_iface); batadv_inc_counter(bat_priv, BATADV_CNT_RX); batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES, @@ -1223,7 +1213,7 @@ out: /** * batadv_dat_snoop_incoming_arp_request() - snoop the ARP request and try to * answer using the local DAT storage - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: packet to check * @hdr_size: size of the encapsulation header * @@ -1291,7 +1281,7 @@ out: /** * batadv_dat_snoop_outgoing_arp_reply() - snoop the ARP reply and fill the DHT - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: packet to check */ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, @@ -1334,7 +1324,7 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, /** * batadv_dat_snoop_incoming_arp_reply() - snoop the ARP reply and fill the * local DAT storage only - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: packet to check * @hdr_size: size of the encapsulation header * @@ -1615,7 +1605,7 @@ static bool batadv_dat_get_dhcp_chaddr(struct sk_buff *skb, u8 *buf) /** * batadv_dat_put_dhcp() - puts addresses from a DHCP packet into the DHT and * DAT cache - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @chaddr: the DHCP client MAC address * @yiaddr: the DHCP client IP address * @hw_dst: the DHCP server MAC address @@ -1700,7 +1690,7 @@ batadv_dat_check_dhcp_ack(struct sk_buff *skb, __be16 proto, __be32 *ip_src, /** * batadv_dat_snoop_outgoing_dhcp_ack() - snoop DHCPACK and fill DAT with it - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the packet to snoop * @proto: ethernet protocol hint (behind a potential vlan) * @vid: VLAN identifier @@ -1733,7 +1723,7 @@ void batadv_dat_snoop_outgoing_dhcp_ack(struct batadv_priv *bat_priv, /** * batadv_dat_snoop_incoming_dhcp_ack() - snoop DHCPACK and fill DAT cache - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the packet to snoop * @hdr_size: header size, up to the tail of the batman-adv header * @@ -1781,7 +1771,7 @@ void batadv_dat_snoop_incoming_dhcp_ack(struct batadv_priv *bat_priv, /** * batadv_dat_drop_broadcast_packet() - check if an ARP request has to be * dropped (because the node has already obtained the reply via DAT) or not - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @forw_packet: the broadcast packet * * Return: true if the node can drop the packet, false otherwise. diff --git a/net/batman-adv/distributed-arp-table.h b/net/batman-adv/distributed-arp-table.h index bed7f3d20844..e7b75e82eb1d 100644 --- a/net/batman-adv/distributed-arp-table.h +++ b/net/batman-adv/distributed-arp-table.h @@ -56,7 +56,7 @@ batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node) /** * batadv_dat_init_own_addr() - assign a DAT address to the node itself - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @primary_if: a pointer to the primary interface */ static inline void @@ -77,7 +77,7 @@ int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb); /** * batadv_dat_inc_counter() - increment the correct DAT packet counter - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @subtype: the 4addr subtype of the packet to be counted * * Updates the ethtool statistics for the received packet if it is a DAT subtype diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c index 757c084ac2d1..cc14bc41381e 100644 --- a/net/batman-adv/fragmentation.c +++ b/net/batman-adv/fragmentation.c @@ -349,7 +349,7 @@ bool batadv_frag_skb_fwd(struct sk_buff *skb, struct batadv_hard_iface *recv_if, struct batadv_orig_node *orig_node_src) { - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); struct batadv_neigh_node *neigh_node = NULL; struct batadv_frag_packet *packet; u16 total_size; diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c index 0ddd8b4b3f4c..7a11b245e9f4 100644 --- a/net/batman-adv/gateway_client.c +++ b/net/batman-adv/gateway_client.c @@ -10,6 +10,7 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> #include <linux/container_of.h> +#include <linux/err.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -31,7 +32,6 @@ #include <linux/sprintf.h> #include <linux/stddef.h> #include <linux/udp.h> -#include <net/sock.h> #include <uapi/linux/batadv_packet.h> #include <uapi/linux/batman_adv.h> @@ -40,7 +40,6 @@ #include "netlink.h" #include "originator.h" #include "routing.h" -#include "soft-interface.h" #include "translation-table.h" /* These are the offsets of the "hw type" and "hw address length" in the dhcp @@ -72,7 +71,7 @@ void batadv_gw_node_release(struct kref *ref) /** * batadv_gw_get_selected_gw_node() - Get currently selected gateway - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: selected gateway (with increased refcnt), NULL on errors */ @@ -96,7 +95,7 @@ out: /** * batadv_gw_get_selected_orig() - Get originator of currently selected gateway - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: orig_node of selected gateway (with increased refcnt), NULL on errors */ @@ -145,7 +144,7 @@ static void batadv_gw_select(struct batadv_priv *bat_priv, /** * batadv_gw_reselect() - force a gateway reselection - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Set a flag to remind the GW component to perform a new gateway reselection. * However this function does not ensure that the current gateway is going to be @@ -161,7 +160,7 @@ void batadv_gw_reselect(struct batadv_priv *bat_priv) /** * batadv_gw_check_client_stop() - check if client mode has been switched off - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * This function assumes the caller has checked that the gw state *is actually * changing*. This function is not supposed to be called when there is no state @@ -193,7 +192,7 @@ void batadv_gw_check_client_stop(struct batadv_priv *bat_priv) /** * batadv_gw_election() - Elect the best gateway - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_gw_election(struct batadv_priv *bat_priv) { @@ -281,7 +280,7 @@ out: /** * batadv_gw_check_election() - Elect orig node as best gateway when eligible - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which is to be checked */ void batadv_gw_check_election(struct batadv_priv *bat_priv, @@ -315,7 +314,7 @@ out: /** * batadv_gw_node_add() - add gateway node to list of available gateways - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: originator announcing gateway capabilities * @gateway: announced bandwidth information * @@ -362,7 +361,7 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv, /** * batadv_gw_node_get() - retrieve gateway node from list of available gateways - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: originator announcing gateway capabilities * * Return: gateway node if found or NULL otherwise. @@ -392,7 +391,7 @@ struct batadv_gw_node *batadv_gw_node_get(struct batadv_priv *bat_priv, /** * batadv_gw_node_update() - update list of available gateways with changed * bandwidth information - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: originator announcing gateway capabilities * @gateway: announced bandwidth information */ @@ -459,7 +458,7 @@ out: /** * batadv_gw_node_delete() - Remove orig_node from gateway list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which is currently in process of being removed */ void batadv_gw_node_delete(struct batadv_priv *bat_priv, @@ -474,8 +473,8 @@ void batadv_gw_node_delete(struct batadv_priv *bat_priv, } /** - * batadv_gw_node_free() - Free gateway information from soft interface - * @bat_priv: the bat priv with all the soft interface information + * batadv_gw_node_free() - Free gateway information from mesh interface + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_gw_node_free(struct batadv_priv *bat_priv) { @@ -502,24 +501,15 @@ void batadv_gw_node_free(struct batadv_priv *bat_priv) int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb) { struct batadv_hard_iface *primary_if = NULL; - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; + struct net_device *mesh_iface; struct batadv_priv *bat_priv; - int ifindex; int ret; - ifindex = batadv_netlink_get_ifindex(cb->nlh, - BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } - - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); primary_if = batadv_primary_if_get_selected(bat_priv); if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { @@ -538,7 +528,7 @@ int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb) out: batadv_hardif_put(primary_if); - dev_put(soft_iface); + dev_put(mesh_iface); return ret; } @@ -667,7 +657,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len, /** * batadv_gw_out_of_range() - check if the dhcp request destination is the best * gateway - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the outgoing packet * * Check if the skb is a DHCP request and if it is sent to the current best GW diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c index 2dd36ef03c84..315fa90f0c94 100644 --- a/net/batman-adv/gateway_common.c +++ b/net/batman-adv/gateway_common.c @@ -20,7 +20,7 @@ /** * batadv_gw_tvlv_container_update() - update the gw tvlv container after * gateway setting change - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_gw_tvlv_container_update(struct batadv_priv *bat_priv) { @@ -48,7 +48,7 @@ void batadv_gw_tvlv_container_update(struct batadv_priv *bat_priv) /** * batadv_gw_tvlv_ogm_handler_v1() - process incoming gateway tvlv container - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) * @tvlv_value: tvlv buffer containing the gateway data @@ -89,7 +89,7 @@ static void batadv_gw_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, /** * batadv_gw_init() - initialise the gateway handling internals - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_gw_init(struct batadv_priv *bat_priv) { @@ -105,7 +105,7 @@ void batadv_gw_init(struct batadv_priv *bat_priv) /** * batadv_gw_free() - free the gateway handling internals - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_gw_free(struct batadv_priv *bat_priv) { diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 96a412beab2d..5113f879736b 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -22,6 +22,7 @@ #include <linux/minmax.h> #include <linux/mutex.h> #include <linux/netdevice.h> +#include <linux/notifier.h> #include <linux/printk.h> #include <linux/rculist.h> #include <linux/rtnetlink.h> @@ -36,9 +37,9 @@ #include "distributed-arp-table.h" #include "gateway_client.h" #include "log.h" +#include "mesh-interface.h" #include "originator.h" #include "send.h" -#include "soft-interface.h" #include "translation-table.h" /** @@ -51,7 +52,7 @@ void batadv_hardif_release(struct kref *ref) struct batadv_hard_iface *hard_iface; hard_iface = container_of(ref, struct batadv_hard_iface, refcount); - dev_put(hard_iface->net_dev); + netdev_put(hard_iface->net_dev, &hard_iface->dev_tracker); kfree_rcu(hard_iface, rcu); } @@ -141,7 +142,7 @@ static bool batadv_mutual_parents(const struct net_device *dev1, * is important to prevent this new interface from being used to create a new * mesh network (this behaviour would lead to a batman-over-batman * configuration). This function recursively checks all the fathers of the - * device passed as argument looking for a batman-adv soft interface. + * device passed as argument looking for a batman-adv mesh interface. * * Return: true if the device is descendant of a batman-adv mesh interface (or * if it is a batman-adv interface itself), false otherwise @@ -155,7 +156,7 @@ static bool batadv_is_on_batman_iface(const struct net_device *net_dev) bool ret; /* check if this is a batman-adv mesh interface */ - if (batadv_softif_is_valid(net_dev)) + if (batadv_meshif_is_valid(net_dev)) return true; iflink = dev_get_iflink(net_dev); @@ -233,10 +234,10 @@ static struct net_device *batadv_get_real_netdevice(struct net_device *netdev) } hard_iface = batadv_hardif_get_by_netdev(netdev); - if (!hard_iface || !hard_iface->soft_iface) + if (!hard_iface || !hard_iface->mesh_iface) goto out; - net = dev_net(hard_iface->soft_iface); + net = dev_net(hard_iface->mesh_iface); real_net = batadv_getlink_net(netdev, net); /* iflink to itself, most likely physical device */ @@ -438,15 +439,13 @@ out: } static struct batadv_hard_iface * -batadv_hardif_get_active(const struct net_device *soft_iface) +batadv_hardif_get_active(struct net_device *mesh_iface) { struct batadv_hard_iface *hard_iface; + struct list_head *iter; rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != soft_iface) - continue; - + netdev_for_each_lower_private_rcu(mesh_iface, hard_iface, iter) { if (hard_iface->if_status == BATADV_IF_ACTIVE && kref_get_unless_zero(&hard_iface->refcount)) goto out; @@ -506,50 +505,50 @@ batadv_hardif_is_iface_up(const struct batadv_hard_iface *hard_iface) return false; } -static void batadv_check_known_mac_addr(const struct net_device *net_dev) +static void batadv_check_known_mac_addr(const struct batadv_hard_iface *hard_iface) { - const struct batadv_hard_iface *hard_iface; + struct net_device *mesh_iface = hard_iface->mesh_iface; + const struct batadv_hard_iface *tmp_hard_iface; + struct list_head *iter; - rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->if_status != BATADV_IF_ACTIVE && - hard_iface->if_status != BATADV_IF_TO_BE_ACTIVATED) + if (!mesh_iface) + return; + + netdev_for_each_lower_private(mesh_iface, tmp_hard_iface, iter) { + if (tmp_hard_iface == hard_iface) continue; - if (hard_iface->net_dev == net_dev) + if (tmp_hard_iface->if_status == BATADV_IF_NOT_IN_USE) continue; - if (!batadv_compare_eth(hard_iface->net_dev->dev_addr, - net_dev->dev_addr)) + if (!batadv_compare_eth(tmp_hard_iface->net_dev->dev_addr, + hard_iface->net_dev->dev_addr)) continue; pr_warn("The newly added mac address (%pM) already exists on: %s\n", - net_dev->dev_addr, hard_iface->net_dev->name); + hard_iface->net_dev->dev_addr, tmp_hard_iface->net_dev->name); pr_warn("It is strongly recommended to keep mac addresses unique to avoid problems!\n"); } - rcu_read_unlock(); } /** * batadv_hardif_recalc_extra_skbroom() - Recalculate skbuff extra head/tailroom - * @soft_iface: netdev struct of the mesh interface + * @mesh_iface: netdev struct of the mesh interface */ -static void batadv_hardif_recalc_extra_skbroom(struct net_device *soft_iface) +static void batadv_hardif_recalc_extra_skbroom(struct net_device *mesh_iface) { const struct batadv_hard_iface *hard_iface; unsigned short lower_header_len = ETH_HLEN; unsigned short lower_headroom = 0; unsigned short lower_tailroom = 0; unsigned short needed_headroom; + struct list_head *iter; rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + netdev_for_each_lower_private_rcu(mesh_iface, hard_iface, iter) { if (hard_iface->if_status == BATADV_IF_NOT_IN_USE) continue; - if (hard_iface->soft_iface != soft_iface) - continue; - lower_header_len = max_t(unsigned short, lower_header_len, hard_iface->net_dev->hard_header_len); @@ -567,32 +566,30 @@ static void batadv_hardif_recalc_extra_skbroom(struct net_device *soft_iface) /* fragmentation headers don't strip the unicast/... header */ needed_headroom += sizeof(struct batadv_frag_packet); - soft_iface->needed_headroom = needed_headroom; - soft_iface->needed_tailroom = lower_tailroom; + mesh_iface->needed_headroom = needed_headroom; + mesh_iface->needed_tailroom = lower_tailroom; } /** - * batadv_hardif_min_mtu() - Calculate maximum MTU for soft interface - * @soft_iface: netdev struct of the soft interface + * batadv_hardif_min_mtu() - Calculate maximum MTU for mesh interface + * @mesh_iface: netdev struct of the mesh interface * - * Return: MTU for the soft-interface (limited by the minimal MTU of all active + * Return: MTU for the mesh-interface (limited by the minimal MTU of all active * slave interfaces) */ -int batadv_hardif_min_mtu(struct net_device *soft_iface) +int batadv_hardif_min_mtu(struct net_device *mesh_iface) { - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); const struct batadv_hard_iface *hard_iface; + struct list_head *iter; int min_mtu = INT_MAX; rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + netdev_for_each_lower_private_rcu(mesh_iface, hard_iface, iter) { if (hard_iface->if_status != BATADV_IF_ACTIVE && hard_iface->if_status != BATADV_IF_TO_BE_ACTIVATED) continue; - if (hard_iface->soft_iface != soft_iface) - continue; - min_mtu = min_t(int, hard_iface->net_dev->mtu, min_mtu); } rcu_read_unlock(); @@ -616,26 +613,24 @@ out: */ atomic_set(&bat_priv->packet_size_max, min_mtu); - /* the real soft-interface MTU is computed by removing the payload + /* the real mesh-interface MTU is computed by removing the payload * overhead from the maximum amount of bytes that was just computed. - * - * However batman-adv does not support MTUs bigger than ETH_DATA_LEN */ - return min_t(int, min_mtu - batadv_max_header_len(), ETH_DATA_LEN); + return min_t(int, min_mtu - batadv_max_header_len(), BATADV_MAX_MTU); } /** * batadv_update_min_mtu() - Adjusts the MTU if a new interface with a smaller * MTU appeared - * @soft_iface: netdev struct of the soft interface + * @mesh_iface: netdev struct of the mesh interface */ -void batadv_update_min_mtu(struct net_device *soft_iface) +void batadv_update_min_mtu(struct net_device *mesh_iface) { - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); int limit_mtu; int mtu; - mtu = batadv_hardif_min_mtu(soft_iface); + mtu = batadv_hardif_min_mtu(mesh_iface); if (bat_priv->mtu_set_by_user) limit_mtu = bat_priv->mtu_set_by_user; @@ -643,12 +638,12 @@ void batadv_update_min_mtu(struct net_device *soft_iface) limit_mtu = ETH_DATA_LEN; mtu = min(mtu, limit_mtu); - dev_set_mtu(soft_iface, mtu); + dev_set_mtu(mesh_iface, mtu); /* Check if the local translate table should be cleaned up to match a * new (and smaller) MTU. */ - batadv_tt_local_resize_to_mtu(soft_iface); + batadv_tt_local_resize_to_mtu(mesh_iface); } static void @@ -660,7 +655,7 @@ batadv_hardif_activate_interface(struct batadv_hard_iface *hard_iface) if (hard_iface->if_status != BATADV_IF_INACTIVE) goto out; - bat_priv = netdev_priv(hard_iface->soft_iface); + bat_priv = netdev_priv(hard_iface->mesh_iface); bat_priv->algo_ops->iface.update_mac(hard_iface); hard_iface->if_status = BATADV_IF_TO_BE_ACTIVATED; @@ -672,10 +667,10 @@ batadv_hardif_activate_interface(struct batadv_hard_iface *hard_iface) if (!primary_if) batadv_primary_if_select(bat_priv, hard_iface); - batadv_info(hard_iface->soft_iface, "Interface activated: %s\n", + batadv_info(hard_iface->mesh_iface, "Interface activated: %s\n", hard_iface->net_dev->name); - batadv_update_min_mtu(hard_iface->soft_iface); + batadv_update_min_mtu(hard_iface->mesh_iface); if (bat_priv->algo_ops->iface.activate) bat_priv->algo_ops->iface.activate(hard_iface); @@ -693,21 +688,21 @@ batadv_hardif_deactivate_interface(struct batadv_hard_iface *hard_iface) hard_iface->if_status = BATADV_IF_INACTIVE; - batadv_info(hard_iface->soft_iface, "Interface deactivated: %s\n", + batadv_info(hard_iface->mesh_iface, "Interface deactivated: %s\n", hard_iface->net_dev->name); - batadv_update_min_mtu(hard_iface->soft_iface); + batadv_update_min_mtu(hard_iface->mesh_iface); } /** - * batadv_hardif_enable_interface() - Enslave hard interface to soft interface - * @hard_iface: hard interface to add to soft interface - * @soft_iface: netdev struct of the mesh interface + * batadv_hardif_enable_interface() - Enslave hard interface to mesh interface + * @hard_iface: hard interface to add to mesh interface + * @mesh_iface: netdev struct of the mesh interface * * Return: 0 on success or negative error number in case of failure */ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, - struct net_device *soft_iface) + struct net_device *mesh_iface) { struct batadv_priv *bat_priv; __be16 ethertype = htons(ETH_P_BATMAN); @@ -717,7 +712,7 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, int ret; hardif_mtu = READ_ONCE(hard_iface->net_dev->mtu); - required_mtu = READ_ONCE(soft_iface->mtu) + max_header_len; + required_mtu = READ_ONCE(mesh_iface->mtu) + max_header_len; if (hardif_mtu < ETH_MIN_MTU + max_header_len) return -EINVAL; @@ -727,12 +722,12 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, kref_get(&hard_iface->refcount); - dev_hold(soft_iface); - hard_iface->soft_iface = soft_iface; - bat_priv = netdev_priv(hard_iface->soft_iface); + netdev_hold(mesh_iface, &hard_iface->meshif_dev_tracker, GFP_ATOMIC); + hard_iface->mesh_iface = mesh_iface; + bat_priv = netdev_priv(hard_iface->mesh_iface); ret = netdev_master_upper_dev_link(hard_iface->net_dev, - soft_iface, NULL, NULL, NULL); + mesh_iface, hard_iface, NULL, NULL); if (ret) goto err_dev; @@ -748,31 +743,33 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, hard_iface->batman_adv_ptype.dev = hard_iface->net_dev; dev_add_pack(&hard_iface->batman_adv_ptype); - batadv_info(hard_iface->soft_iface, "Adding interface: %s\n", + batadv_info(hard_iface->mesh_iface, "Adding interface: %s\n", hard_iface->net_dev->name); if (atomic_read(&bat_priv->fragmentation) && hardif_mtu < required_mtu) - batadv_info(hard_iface->soft_iface, + batadv_info(hard_iface->mesh_iface, "The MTU of interface %s is too small (%i) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to %i would solve the problem.\n", hard_iface->net_dev->name, hardif_mtu, required_mtu); if (!atomic_read(&bat_priv->fragmentation) && hardif_mtu < required_mtu) - batadv_info(hard_iface->soft_iface, + batadv_info(hard_iface->mesh_iface, "The MTU of interface %s is too small (%i) to handle the transport of batman-adv packets. If you experience problems getting traffic through try increasing the MTU to %i.\n", hard_iface->net_dev->name, hardif_mtu, required_mtu); + batadv_check_known_mac_addr(hard_iface); + if (batadv_hardif_is_iface_up(hard_iface)) batadv_hardif_activate_interface(hard_iface); else - batadv_err(hard_iface->soft_iface, + batadv_err(hard_iface->mesh_iface, "Not using interface %s (retrying later): interface not active\n", hard_iface->net_dev->name); - batadv_hardif_recalc_extra_skbroom(soft_iface); + batadv_hardif_recalc_extra_skbroom(mesh_iface); if (bat_priv->algo_ops->iface.enabled) bat_priv->algo_ops->iface.enabled(hard_iface); @@ -781,17 +778,17 @@ out: return 0; err_upper: - netdev_upper_dev_unlink(hard_iface->net_dev, soft_iface); + netdev_upper_dev_unlink(hard_iface->net_dev, mesh_iface); err_dev: - hard_iface->soft_iface = NULL; - dev_put(soft_iface); + hard_iface->mesh_iface = NULL; + netdev_put(mesh_iface, &hard_iface->meshif_dev_tracker); batadv_hardif_put(hard_iface); return ret; } /** - * batadv_hardif_cnt() - get number of interfaces enslaved to soft interface - * @soft_iface: soft interface to check + * batadv_hardif_cnt() - get number of interfaces enslaved to mesh interface + * @mesh_iface: mesh interface to check * * This function is only using RCU for locking - the result can therefore be * off when another function is modifying the list at the same time. The @@ -799,30 +796,27 @@ err_dev: * * Return: number of connected/enslaved hard interfaces */ -static size_t batadv_hardif_cnt(const struct net_device *soft_iface) +static size_t batadv_hardif_cnt(struct net_device *mesh_iface) { struct batadv_hard_iface *hard_iface; + struct list_head *iter; size_t count = 0; rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != soft_iface) - continue; - + netdev_for_each_lower_private_rcu(mesh_iface, hard_iface, iter) count++; - } rcu_read_unlock(); return count; } /** - * batadv_hardif_disable_interface() - Remove hard interface from soft interface + * batadv_hardif_disable_interface() - Remove hard interface from mesh interface * @hard_iface: hard interface to be removed */ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); struct batadv_hard_iface *primary_if = NULL; batadv_hardif_deactivate_interface(hard_iface); @@ -830,7 +824,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface) if (hard_iface->if_status != BATADV_IF_INACTIVE) goto out; - batadv_info(hard_iface->soft_iface, "Removing interface: %s\n", + batadv_info(hard_iface->mesh_iface, "Removing interface: %s\n", hard_iface->net_dev->name); dev_remove_pack(&hard_iface->batman_adv_ptype); batadv_hardif_put(hard_iface); @@ -839,7 +833,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface) if (hard_iface == primary_if) { struct batadv_hard_iface *new_if; - new_if = batadv_hardif_get_active(hard_iface->soft_iface); + new_if = batadv_hardif_get_active(hard_iface->mesh_iface); batadv_primary_if_select(bat_priv, new_if); batadv_hardif_put(new_if); @@ -851,16 +845,16 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface) /* delete all references to this hard_iface */ batadv_purge_orig_ref(bat_priv); batadv_purge_outstanding_packets(bat_priv, hard_iface); - dev_put(hard_iface->soft_iface); + netdev_put(hard_iface->mesh_iface, &hard_iface->meshif_dev_tracker); - netdev_upper_dev_unlink(hard_iface->net_dev, hard_iface->soft_iface); - batadv_hardif_recalc_extra_skbroom(hard_iface->soft_iface); + netdev_upper_dev_unlink(hard_iface->net_dev, hard_iface->mesh_iface); + batadv_hardif_recalc_extra_skbroom(hard_iface->mesh_iface); /* nobody uses this interface anymore */ - if (batadv_hardif_cnt(hard_iface->soft_iface) <= 1) + if (batadv_hardif_cnt(hard_iface->mesh_iface) <= 1) batadv_gw_check_client_stop(bat_priv); - hard_iface->soft_iface = NULL; + hard_iface->mesh_iface = NULL; batadv_hardif_put(hard_iface); out: @@ -875,16 +869,16 @@ batadv_hardif_add_interface(struct net_device *net_dev) ASSERT_RTNL(); if (!batadv_is_valid_iface(net_dev)) - goto out; - - dev_hold(net_dev); + return NULL; hard_iface = kzalloc(sizeof(*hard_iface), GFP_ATOMIC); if (!hard_iface) - goto release_dev; + return NULL; + netdev_hold(net_dev, &hard_iface->dev_tracker, GFP_ATOMIC); hard_iface->net_dev = net_dev; - hard_iface->soft_iface = NULL; + + hard_iface->mesh_iface = NULL; hard_iface->if_status = BATADV_IF_NOT_IN_USE; INIT_LIST_HEAD(&hard_iface->list); @@ -903,17 +897,11 @@ batadv_hardif_add_interface(struct net_device *net_dev) batadv_v_hardif_init(hard_iface); - batadv_check_known_mac_addr(hard_iface->net_dev); kref_get(&hard_iface->refcount); list_add_tail_rcu(&hard_iface->list, &batadv_hardif_list); batadv_hardif_generation++; return hard_iface; - -release_dev: - dev_put(net_dev); -out: - return NULL; } static void batadv_hardif_remove_interface(struct batadv_hard_iface *hard_iface) @@ -932,13 +920,13 @@ static void batadv_hardif_remove_interface(struct batadv_hard_iface *hard_iface) } /** - * batadv_hard_if_event_softif() - Handle events for soft interfaces + * batadv_hard_if_event_meshif() - Handle events for mesh interfaces * @event: NETDEV_* event to handle * @net_dev: net_device which generated an event * * Return: NOTIFY_* result */ -static int batadv_hard_if_event_softif(unsigned long event, +static int batadv_hard_if_event_meshif(unsigned long event, struct net_device *net_dev) { struct batadv_priv *bat_priv; @@ -946,7 +934,7 @@ static int batadv_hard_if_event_softif(unsigned long event, switch (event) { case NETDEV_REGISTER: bat_priv = netdev_priv(net_dev); - batadv_softif_create_vlan(bat_priv, BATADV_NO_FLAGS); + batadv_meshif_create_vlan(bat_priv, BATADV_NO_FLAGS); break; } @@ -961,8 +949,8 @@ static int batadv_hard_if_event(struct notifier_block *this, struct batadv_hard_iface *primary_if = NULL; struct batadv_priv *bat_priv; - if (batadv_softif_is_valid(net_dev)) - return batadv_hard_if_event_softif(event, net_dev); + if (batadv_meshif_is_valid(net_dev)) + return batadv_hard_if_event_meshif(event, net_dev); hard_iface = batadv_hardif_get_by_netdev(net_dev); if (!hard_iface && (event == NETDEV_REGISTER || @@ -988,16 +976,16 @@ static int batadv_hard_if_event(struct notifier_block *this, batadv_hardif_remove_interface(hard_iface); break; case NETDEV_CHANGEMTU: - if (hard_iface->soft_iface) - batadv_update_min_mtu(hard_iface->soft_iface); + if (hard_iface->mesh_iface) + batadv_update_min_mtu(hard_iface->mesh_iface); break; case NETDEV_CHANGEADDR: if (hard_iface->if_status == BATADV_IF_NOT_IN_USE) goto hardif_put; - batadv_check_known_mac_addr(hard_iface->net_dev); + batadv_check_known_mac_addr(hard_iface); - bat_priv = netdev_priv(hard_iface->soft_iface); + bat_priv = netdev_priv(hard_iface->mesh_iface); bat_priv->algo_ops->iface.update_mac(hard_iface); primary_if = batadv_primary_if_get_selected(bat_priv); diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index 64f660dbbe54..9db8a310961e 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -12,7 +12,6 @@ #include <linux/compiler.h> #include <linux/kref.h> #include <linux/netdevice.h> -#include <linux/notifier.h> #include <linux/rcupdate.h> #include <linux/stddef.h> #include <linux/types.h> @@ -23,12 +22,12 @@ enum batadv_hard_if_state { /** * @BATADV_IF_NOT_IN_USE: interface is not used as slave interface of a - * batman-adv soft interface + * batman-adv mesh interface */ BATADV_IF_NOT_IN_USE, /** - * @BATADV_IF_TO_BE_REMOVED: interface will be removed from soft + * @BATADV_IF_TO_BE_REMOVED: interface will be removed from mesh * interface */ BATADV_IF_TO_BE_REMOVED, @@ -74,10 +73,10 @@ bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface); struct batadv_hard_iface* batadv_hardif_get_by_netdev(const struct net_device *net_dev); int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, - struct net_device *soft_iface); + struct net_device *mesh_iface); void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface); -int batadv_hardif_min_mtu(struct net_device *soft_iface); -void batadv_update_min_mtu(struct net_device *soft_iface); +int batadv_hardif_min_mtu(struct net_device *mesh_iface); +void batadv_update_min_mtu(struct net_device *mesh_iface); void batadv_hardif_release(struct kref *ref); int batadv_hardif_no_broadcast(struct batadv_hard_iface *if_outgoing, u8 *orig_addr, u8 *orig_neigh); @@ -97,7 +96,7 @@ static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface) /** * batadv_primary_if_get_selected() - Get reference to primary interface - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: primary interface (with increased refcnt), otherwise NULL */ diff --git a/net/batman-adv/log.c b/net/batman-adv/log.c index 7a93a1e94c40..c19d07eeb070 100644 --- a/net/batman-adv/log.c +++ b/net/batman-adv/log.c @@ -13,7 +13,7 @@ /** * batadv_debug_log() - Add debug log entry - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @fmt: format string * * Return: 0 on success or negative error number in case of failure diff --git a/net/batman-adv/log.h b/net/batman-adv/log.h index 6717c965f0fa..225b747a2048 100644 --- a/net/batman-adv/log.h +++ b/net/batman-adv/log.h @@ -51,9 +51,6 @@ enum batadv_dbg_level { /** @BATADV_DBG_DAT: ARP snooping and DAT related messages */ BATADV_DBG_DAT = BIT(4), - /** @BATADV_DBG_NC: network coding related messages */ - BATADV_DBG_NC = BIT(5), - /** @BATADV_DBG_MCAST: multicast related messages */ BATADV_DBG_MCAST = BIT(6), @@ -71,7 +68,7 @@ __printf(2, 3); /** * _batadv_dbg() - Store debug output with(out) rate limiting * @type: type of debug message - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ratelimited: whether output should be rate limited * @fmt: format string * @arg: variable arguments @@ -97,7 +94,7 @@ static inline void _batadv_dbg(int type __always_unused, /** * batadv_dbg() - Store debug output without rate limiting * @type: type of debug message - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @arg: format string and variable arguments */ #define batadv_dbg(type, bat_priv, arg...) \ @@ -106,7 +103,7 @@ static inline void _batadv_dbg(int type __always_unused, /** * batadv_dbg_ratelimited() - Store debug output with rate limiting * @type: type of debug message - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @arg: format string and variable arguments */ #define batadv_dbg_ratelimited(type, bat_priv, arg...) \ @@ -114,7 +111,7 @@ static inline void _batadv_dbg(int type __always_unused, /** * batadv_info() - Store message in debug buffer and print it to kmsg buffer - * @net_dev: the soft interface net device + * @net_dev: the mesh interface net device * @fmt: format string * @arg: variable arguments */ @@ -128,7 +125,7 @@ static inline void _batadv_dbg(int type __always_unused, /** * batadv_err() - Store error in debug buffer and print it to kmsg buffer - * @net_dev: the soft interface net device + * @net_dev: the mesh interface net device * @fmt: format string * @arg: variable arguments */ diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 8e0f44c71696..3a35aadd8b41 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -11,7 +11,6 @@ #include <linux/build_bug.h> #include <linux/byteorder/generic.h> #include <linux/container_of.h> -#include <linux/crc32c.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/gfp.h> @@ -27,7 +26,6 @@ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/printk.h> -#include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/skbuff.h> #include <linux/slab.h> @@ -51,13 +49,12 @@ #include "gateway_common.h" #include "hard-interface.h" #include "log.h" +#include "mesh-interface.h" #include "multicast.h" #include "netlink.h" -#include "network-coding.h" #include "originator.h" #include "routing.h" #include "send.h" -#include "soft-interface.h" #include "tp_meter.h" #include "translation-table.h" @@ -69,8 +66,6 @@ unsigned int batadv_hardif_generation; static int (*batadv_rx_handler[256])(struct sk_buff *skb, struct batadv_hard_iface *recv_if); -unsigned char batadv_broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; - struct workqueue_struct *batadv_event_workqueue; static void batadv_recv_handler_init(void); @@ -106,7 +101,6 @@ static int __init batadv_init(void) batadv_v_init(); batadv_iv_init(); - batadv_nc_init(); batadv_tp_meter_init(); batadv_event_workqueue = create_singlethread_workqueue("bat_events"); @@ -143,14 +137,14 @@ static void __exit batadv_exit(void) } /** - * batadv_mesh_init() - Initialize soft interface - * @soft_iface: netdev struct of the soft interface + * batadv_mesh_init() - Initialize mesh interface + * @mesh_iface: netdev struct of the mesh interface * * Return: 0 on success or negative error number in case of failure */ -int batadv_mesh_init(struct net_device *soft_iface) +int batadv_mesh_init(struct net_device *mesh_iface) { - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); int ret; spin_lock_init(&bat_priv->forw_bat_list_lock); @@ -167,7 +161,7 @@ int batadv_mesh_init(struct net_device *soft_iface) #endif spin_lock_init(&bat_priv->tvlv.container_list_lock); spin_lock_init(&bat_priv->tvlv.handler_list_lock); - spin_lock_init(&bat_priv->softif_vlan_list_lock); + spin_lock_init(&bat_priv->meshif_vlan_list_lock); spin_lock_init(&bat_priv->tp_list_lock); INIT_HLIST_HEAD(&bat_priv->forw_bat_list); @@ -186,7 +180,7 @@ int batadv_mesh_init(struct net_device *soft_iface) #endif INIT_HLIST_HEAD(&bat_priv->tvlv.container_list); INIT_HLIST_HEAD(&bat_priv->tvlv.handler_list); - INIT_HLIST_HEAD(&bat_priv->softif_vlan_list); + INIT_HLIST_HEAD(&bat_priv->meshif_vlan_list); INIT_HLIST_HEAD(&bat_priv->tp_list); bat_priv->gw.generation = 0; @@ -221,12 +215,6 @@ int batadv_mesh_init(struct net_device *soft_iface) goto err_dat; } - ret = batadv_nc_mesh_init(bat_priv); - if (ret < 0) { - atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); - goto err_nc; - } - batadv_gw_init(bat_priv); batadv_mcast_init(bat_priv); @@ -235,8 +223,6 @@ int batadv_mesh_init(struct net_device *soft_iface) return 0; -err_nc: - batadv_dat_free(bat_priv); err_dat: batadv_bla_free(bat_priv); err_bla: @@ -253,12 +239,12 @@ err_orig: } /** - * batadv_mesh_free() - Deinitialize soft interface - * @soft_iface: netdev struct of the soft interface + * batadv_mesh_free() - Deinitialize mesh interface + * @mesh_iface: netdev struct of the mesh interface */ -void batadv_mesh_free(struct net_device *soft_iface) +void batadv_mesh_free(struct net_device *mesh_iface) { - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); @@ -267,7 +253,6 @@ void batadv_mesh_free(struct net_device *soft_iface) batadv_gw_node_free(bat_priv); batadv_v_mesh_free(bat_priv); - batadv_nc_mesh_free(bat_priv); batadv_dat_free(bat_priv); batadv_bla_free(bat_priv); @@ -297,7 +282,7 @@ void batadv_mesh_free(struct net_device *soft_iface) /** * batadv_is_my_mac() - check if the given mac address belongs to any of the * real interfaces in the current mesh - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the address to check * * Return: 'true' if the mac address was found, false otherwise. @@ -305,16 +290,14 @@ void batadv_mesh_free(struct net_device *soft_iface) bool batadv_is_my_mac(struct batadv_priv *bat_priv, const u8 *addr) { const struct batadv_hard_iface *hard_iface; + struct list_head *iter; bool is_my_mac = false; rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (hard_iface->if_status != BATADV_IF_ACTIVE) continue; - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - if (batadv_compare_eth(hard_iface->net_dev->dev_addr, addr)) { is_my_mac = true; break; @@ -341,11 +324,6 @@ int batadv_max_header_len(void) header_len = max_t(int, header_len, sizeof(struct batadv_bcast_packet)); -#ifdef CONFIG_BATMAN_ADV_NC - header_len = max_t(int, header_len, - sizeof(struct batadv_coded_packet)); -#endif - return header_len + ETH_HLEN; } @@ -457,10 +435,10 @@ int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, if (unlikely(skb->mac_len != ETH_HLEN || !skb_mac_header(skb))) goto err_free; - if (!hard_iface->soft_iface) + if (!hard_iface->mesh_iface) goto err_free; - bat_priv = netdev_priv(hard_iface->soft_iface); + bat_priv = netdev_priv(hard_iface->mesh_iface); if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) goto err_free; @@ -583,39 +561,6 @@ void batadv_recv_handler_unregister(u8 packet_type) } /** - * batadv_skb_crc32() - calculate CRC32 of the whole packet and skip bytes in - * the header - * @skb: skb pointing to fragmented socket buffers - * @payload_ptr: Pointer to position inside the head buffer of the skb - * marking the start of the data to be CRC'ed - * - * payload_ptr must always point to an address in the skb head buffer and not to - * a fragment. - * - * Return: big endian crc32c of the checksummed data - */ -__be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr) -{ - u32 crc = 0; - unsigned int from; - unsigned int to = skb->len; - struct skb_seq_state st; - const u8 *data; - unsigned int len; - unsigned int consumed = 0; - - from = (unsigned int)(payload_ptr - skb->data); - - skb_prepare_seq_read(skb, from, to, &st); - while ((len = skb_seq_read(consumed, &data, &st)) != 0) { - crc = crc32c(crc, data, len); - consumed += len; - } - - return htonl(crc); -} - -/** * batadv_get_vid() - extract the VLAN identifier from skb if any * @skb: the buffer containing the packet * @header_len: length of the batman header preceding the ethernet header @@ -637,6 +582,13 @@ unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len) vhdr = (struct vlan_ethhdr *)(skb->data + header_len); vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK; + + /* VID 0 is only used to indicate "priority tag" frames which only + * contain priority information and no VID. + */ + if (vid == 0) + return BATADV_NO_FLAGS; + vid |= BATADV_VLAN_HAS_TAG; return vid; @@ -644,7 +596,7 @@ unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len) /** * batadv_vlan_ap_isola_get() - return AP isolation status for the given vlan - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @vid: the VLAN identifier for which the AP isolation attributed as to be * looked up * @@ -654,15 +606,15 @@ unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len) bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid) { bool ap_isolation_enabled = false; - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; /* if the AP isolation is requested on a VLAN, then check for its * setting in the proper VLAN private data structure */ - vlan = batadv_softif_vlan_get(bat_priv, vid); + vlan = batadv_meshif_vlan_get(bat_priv, vid); if (vlan) { ap_isolation_enabled = atomic_read(&vlan->ap_isolation); - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); } return ap_isolation_enabled; @@ -670,7 +622,7 @@ bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid) /** * batadv_throw_uevent() - Send an uevent with batman-adv specific env data - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @type: subsystem type of event. Stored in uevent's BATTYPE * @action: action type of event. Stored in uevent's BATACTION * @data: string with additional information to the event (ignored for @@ -685,7 +637,7 @@ int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type, struct kobject *bat_kobj; char *uevent_env[4] = { NULL, NULL, NULL, NULL }; - bat_kobj = &bat_priv->soft_iface->dev.kobj; + bat_kobj = &bat_priv->mesh_iface->dev.kobj; uevent_env[0] = kasprintf(GFP_ATOMIC, "%s%s", BATADV_UEV_TYPE_VAR, diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 3d4c36ae2e1a..af230b017bc1 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -7,13 +7,13 @@ #ifndef _NET_BATMAN_ADV_MAIN_H_ #define _NET_BATMAN_ADV_MAIN_H_ -#define BATADV_DRIVER_AUTHOR "Marek Lindner <mareklindner@neomailbox.ch>, " \ +#define BATADV_DRIVER_AUTHOR "Marek Lindner <marek.lindner@mailbox.org>, " \ "Simon Wunderlich <sw@simonwunderlich.de>" #define BATADV_DRIVER_DESC "B.A.T.M.A.N. advanced" #define BATADV_DRIVER_DEVICE "batman-adv" #ifndef BATADV_SOURCE_VERSION -#define BATADV_SOURCE_VERSION "2024.2" +#define BATADV_SOURCE_VERSION "2025.5" #endif /* B.A.T.M.A.N. parameters */ @@ -22,6 +22,8 @@ #define BATADV_THROUGHPUT_MAX_VALUE 0xFFFFFFFF #define BATADV_JITTER 20 +#define BATADV_MAX_MTU (ETH_MAX_MTU - batadv_max_header_len()) + /* Time To Live of broadcast messages */ #define BATADV_TTL 50 @@ -102,9 +104,7 @@ */ #define BATADV_TQ_SIMILARITY_THRESHOLD 50 -/* should not be bigger than 512 bytes or change the size of - * forw_packet->direct_link_flags - */ +#define BATADV_MAX_AGGREGATION_PACKETS 32 #define BATADV_MAX_AGGREGATION_BYTES 512 #define BATADV_MAX_AGGREGATION_MS 100 @@ -121,18 +121,16 @@ #define BATADV_RESET_PROTECTION_MS 30000 #define BATADV_EXPECTED_SEQNO_RANGE 65536 -#define BATADV_NC_NODE_TIMEOUT 10000 /* Milliseconds */ - /** * BATADV_TP_MAX_NUM - maximum number of simultaneously active tp sessions */ #define BATADV_TP_MAX_NUM 5 /** - * enum batadv_mesh_state - State of a soft interface + * enum batadv_mesh_state - State of a mesh interface */ enum batadv_mesh_state { - /** @BATADV_MESH_INACTIVE: soft interface is not yet running */ + /** @BATADV_MESH_INACTIVE: mesh interface is not yet running */ BATADV_MESH_INACTIVE, /** @BATADV_MESH_ACTIVE: interface is up and running */ @@ -235,11 +233,10 @@ static inline int batadv_print_vid(unsigned short vid) extern struct list_head batadv_hardif_list; extern unsigned int batadv_hardif_generation; -extern unsigned char batadv_broadcast_addr[]; extern struct workqueue_struct *batadv_event_workqueue; -int batadv_mesh_init(struct net_device *soft_iface); -void batadv_mesh_free(struct net_device *soft_iface); +int batadv_mesh_init(struct net_device *mesh_iface); +void batadv_mesh_free(struct net_device *mesh_iface); bool batadv_is_my_mac(struct batadv_priv *bat_priv, const u8 *addr); int batadv_max_header_len(void); void batadv_skb_set_priority(struct sk_buff *skb, int offset); @@ -251,7 +248,6 @@ batadv_recv_handler_register(u8 packet_type, int (*recv_handler)(struct sk_buff *, struct batadv_hard_iface *)); void batadv_recv_handler_unregister(u8 packet_type); -__be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr); /** * batadv_compare_eth() - Compare two not u16 aligned Ethernet addresses @@ -345,8 +341,8 @@ static inline bool batadv_has_timed_out(unsigned long timestamp, #define batadv_seq_after(x, y) batadv_seq_before(y, x) /** - * batadv_add_counter() - Add to per cpu statistics counter of soft interface - * @bat_priv: the bat priv with all the soft interface information + * batadv_add_counter() - Add to per cpu statistics counter of mesh interface + * @bat_priv: the bat priv with all the mesh interface information * @idx: counter index which should be modified * @count: value to increase counter by * @@ -359,8 +355,8 @@ static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx, } /** - * batadv_inc_counter() - Increase per cpu statistics counter of soft interface - * @b: the bat priv with all the soft interface information + * batadv_inc_counter() - Increase per cpu statistics counter of mesh interface + * @b: the bat priv with all the mesh interface information * @i: counter index which should be modified */ #define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1) diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/mesh-interface.c index 30ecbc2ef1fd..df7e95811ef5 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/mesh-interface.c @@ -4,7 +4,7 @@ * Marek Lindner, Simon Wunderlich */ -#include "soft-interface.h" +#include "mesh-interface.h" #include "main.h" #include <linux/atomic.h> @@ -36,8 +36,8 @@ #include <linux/stddef.h> #include <linux/string.h> #include <linux/types.h> -#include <net/net_namespace.h> #include <net/netlink.h> +#include <net/rtnetlink.h> #include <uapi/linux/batadv_packet.h> #include <uapi/linux/batman_adv.h> @@ -47,7 +47,6 @@ #include "gateway_client.h" #include "hard-interface.h" #include "multicast.h" -#include "network-coding.h" #include "send.h" #include "translation-table.h" @@ -77,21 +76,9 @@ int batadv_skb_head_push(struct sk_buff *skb, unsigned int len) return 0; } -static int batadv_interface_open(struct net_device *dev) -{ - netif_start_queue(dev); - return 0; -} - -static int batadv_interface_release(struct net_device *dev) -{ - netif_stop_queue(dev); - return 0; -} - /** * batadv_sum_counter() - Sum the cpu-local counters for index 'idx' - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @idx: index of counter to sum up * * Return: sum of all cpu-local counters @@ -125,7 +112,7 @@ static struct net_device_stats *batadv_interface_stats(struct net_device *dev) static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) { struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; struct sockaddr *addr = p; u8 old_addr[ETH_ALEN]; @@ -140,7 +127,7 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) return 0; rcu_read_lock(); - hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) { + hlist_for_each_entry_rcu(vlan, &bat_priv->meshif_vlan_list, list) { batadv_tt_local_remove(bat_priv, old_addr, vlan->vid, "mac address changed", false); batadv_tt_local_add(dev, addr->sa_data, vlan->vid, @@ -170,7 +157,7 @@ static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) * @dev: registered network device to modify * * We do not actually need to set any rx filters for the virtual batman - * soft interface. However a dummy handler enables a user to set static + * mesh interface. However a dummy handler enables a user to set static * multicast listeners for instance. */ static void batadv_interface_set_rx_mode(struct net_device *dev) @@ -178,10 +165,10 @@ static void batadv_interface_set_rx_mode(struct net_device *dev) } static netdev_tx_t batadv_interface_tx(struct sk_buff *skb, - struct net_device *soft_iface) + struct net_device *mesh_iface) { struct ethhdr *ethhdr; - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); struct batadv_hard_iface *primary_if = NULL; struct batadv_bcast_packet *bcast_packet; static const u8 stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00, @@ -209,7 +196,7 @@ static netdev_tx_t batadv_interface_tx(struct sk_buff *skb, /* reset control block to avoid left overs from previous users */ memset(skb->cb, 0, sizeof(struct batadv_skb_cb)); - netif_trans_update(soft_iface); + netif_trans_update(mesh_iface); vid = batadv_get_vid(skb, 0); skb_reset_mac_header(skb); @@ -246,7 +233,7 @@ static netdev_tx_t batadv_interface_tx(struct sk_buff *skb, /* Register the client MAC in the transtable */ if (!is_multicast_ether_addr(ethhdr->h_source) && !batadv_bla_is_loopdetect_mac(ethhdr->h_source)) { - client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source, + client_added = batadv_tt_local_add(mesh_iface, ethhdr->h_source, vid, skb->skb_iif, skb->mark); if (!client_added) @@ -397,12 +384,12 @@ end: /** * batadv_interface_rx() - receive ethernet frame on local batman-adv interface - * @soft_iface: local interface which will receive the ethernet frame - * @skb: ethernet frame for @soft_iface + * @mesh_iface: local interface which will receive the ethernet frame + * @skb: ethernet frame for @mesh_iface * @hdr_size: size of already parsed batman-adv header * @orig_node: originator from which the batman-adv packet was sent * - * Sends an ethernet frame to the receive path of the local @soft_iface. + * Sends an ethernet frame to the receive path of the local @mesh_iface. * skb->data has still point to the batman-adv header with the size @hdr_size. * The caller has to have parsed this header already and made sure that at least * @hdr_size bytes are still available for pull in @skb. @@ -412,12 +399,12 @@ end: * unicast packets will be dropped directly when it was sent between two * isolated clients. */ -void batadv_interface_rx(struct net_device *soft_iface, +void batadv_interface_rx(struct net_device *mesh_iface, struct sk_buff *skb, int hdr_size, struct batadv_orig_node *orig_node) { struct batadv_bcast_packet *batadv_bcast_packet; - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); struct vlan_ethhdr *vhdr; struct ethhdr *ethhdr; unsigned short vid; @@ -457,7 +444,7 @@ void batadv_interface_rx(struct net_device *soft_iface, } /* skb->dev & skb->pkt_type are set here */ - skb->protocol = eth_type_trans(skb, soft_iface); + skb->protocol = eth_type_trans(skb, mesh_iface); skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN); batadv_inc_counter(bat_priv, BATADV_CNT_RX); @@ -502,38 +489,38 @@ out: } /** - * batadv_softif_vlan_release() - release vlan from lists and queue for free + * batadv_meshif_vlan_release() - release vlan from lists and queue for free * after rcu grace period * @ref: kref pointer of the vlan object */ -void batadv_softif_vlan_release(struct kref *ref) +void batadv_meshif_vlan_release(struct kref *ref) { - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; - vlan = container_of(ref, struct batadv_softif_vlan, refcount); + vlan = container_of(ref, struct batadv_meshif_vlan, refcount); - spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock); + spin_lock_bh(&vlan->bat_priv->meshif_vlan_list_lock); hlist_del_rcu(&vlan->list); - spin_unlock_bh(&vlan->bat_priv->softif_vlan_list_lock); + spin_unlock_bh(&vlan->bat_priv->meshif_vlan_list_lock); kfree_rcu(vlan, rcu); } /** - * batadv_softif_vlan_get() - get the vlan object for a specific vid - * @bat_priv: the bat priv with all the soft interface information + * batadv_meshif_vlan_get() - get the vlan object for a specific vid + * @bat_priv: the bat priv with all the mesh interface information * @vid: the identifier of the vlan object to retrieve * * Return: the private data of the vlan matching the vid passed as argument or * NULL otherwise. The refcounter of the returned object is incremented by 1. */ -struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, +struct batadv_meshif_vlan *batadv_meshif_vlan_get(struct batadv_priv *bat_priv, unsigned short vid) { - struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; + struct batadv_meshif_vlan *vlan_tmp, *vlan = NULL; rcu_read_lock(); - hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { + hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->meshif_vlan_list, list) { if (vlan_tmp->vid != vid) continue; @@ -549,28 +536,28 @@ struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, } /** - * batadv_softif_create_vlan() - allocate the needed resources for a new vlan - * @bat_priv: the bat priv with all the soft interface information + * batadv_meshif_create_vlan() - allocate the needed resources for a new vlan + * @bat_priv: the bat priv with all the mesh interface information * @vid: the VLAN identifier * * Return: 0 on success, a negative error otherwise. */ -int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) +int batadv_meshif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) { - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; - spin_lock_bh(&bat_priv->softif_vlan_list_lock); + spin_lock_bh(&bat_priv->meshif_vlan_list_lock); - vlan = batadv_softif_vlan_get(bat_priv, vid); + vlan = batadv_meshif_vlan_get(bat_priv, vid); if (vlan) { - batadv_softif_vlan_put(vlan); - spin_unlock_bh(&bat_priv->softif_vlan_list_lock); + batadv_meshif_vlan_put(vlan); + spin_unlock_bh(&bat_priv->meshif_vlan_list_lock); return -EEXIST; } vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); if (!vlan) { - spin_unlock_bh(&bat_priv->softif_vlan_list_lock); + spin_unlock_bh(&bat_priv->meshif_vlan_list_lock); return -ENOMEM; } @@ -581,37 +568,37 @@ int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) atomic_set(&vlan->ap_isolation, 0); kref_get(&vlan->refcount); - hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); - spin_unlock_bh(&bat_priv->softif_vlan_list_lock); + hlist_add_head_rcu(&vlan->list, &bat_priv->meshif_vlan_list); + spin_unlock_bh(&bat_priv->meshif_vlan_list_lock); /* add a new TT local entry. This one will be marked with the NOPURGE * flag */ - batadv_tt_local_add(bat_priv->soft_iface, - bat_priv->soft_iface->dev_addr, vid, + batadv_tt_local_add(bat_priv->mesh_iface, + bat_priv->mesh_iface->dev_addr, vid, BATADV_NULL_IFINDEX, BATADV_NO_MARK); - /* don't return reference to new softif_vlan */ - batadv_softif_vlan_put(vlan); + /* don't return reference to new meshif_vlan */ + batadv_meshif_vlan_put(vlan); return 0; } /** - * batadv_softif_destroy_vlan() - remove and destroy a softif_vlan object - * @bat_priv: the bat priv with all the soft interface information + * batadv_meshif_destroy_vlan() - remove and destroy a meshif_vlan object + * @bat_priv: the bat priv with all the mesh interface information * @vlan: the object to remove */ -static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan) +static void batadv_meshif_destroy_vlan(struct batadv_priv *bat_priv, + struct batadv_meshif_vlan *vlan) { /* explicitly remove the associated TT local entry because it is marked * with the NOPURGE flag */ - batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, + batadv_tt_local_remove(bat_priv, bat_priv->mesh_iface->dev_addr, vlan->vid, "vlan interface destroyed", false); - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); } /** @@ -629,7 +616,7 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, unsigned short vid) { struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; /* only 802.1Q vlans are supported. * batman-adv does not know how to handle other types @@ -637,24 +624,32 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, if (proto != htons(ETH_P_8021Q)) return -EINVAL; + /* VID 0 is only used to indicate "priority tag" frames which only + * contain priority information and no VID. No management structures + * should be created for this VID and it should be handled like an + * untagged frame. + */ + if (vid == 0) + return 0; + vid |= BATADV_VLAN_HAS_TAG; /* if a new vlan is getting created and it already exists, it means that - * it was not deleted yet. batadv_softif_vlan_get() increases the + * it was not deleted yet. batadv_meshif_vlan_get() increases the * refcount in order to revive the object. * * if it does not exist then create it. */ - vlan = batadv_softif_vlan_get(bat_priv, vid); + vlan = batadv_meshif_vlan_get(bat_priv, vid); if (!vlan) - return batadv_softif_create_vlan(bat_priv, vid); + return batadv_meshif_create_vlan(bat_priv, vid); /* add a new TT local entry. This one will be marked with the NOPURGE * flag. This must be added again, even if the vlan object already * exists, because the entry was deleted by kill_vid() */ - batadv_tt_local_add(bat_priv->soft_iface, - bat_priv->soft_iface->dev_addr, vid, + batadv_tt_local_add(bat_priv->mesh_iface, + bat_priv->mesh_iface->dev_addr, vid, BATADV_NULL_IFINDEX, BATADV_NO_MARK); return 0; @@ -676,7 +671,7 @@ static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, unsigned short vid) { struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; /* only 802.1Q vlans are supported. batman-adv does not know how to * handle other types @@ -684,14 +679,20 @@ static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, if (proto != htons(ETH_P_8021Q)) return -EINVAL; - vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); + /* "priority tag" frames are handled like "untagged" frames + * and no meshif_vlan needs to be destroyed + */ + if (vid == 0) + return 0; + + vlan = batadv_meshif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); if (!vlan) return -ENOENT; - batadv_softif_destroy_vlan(bat_priv, vlan); + batadv_meshif_destroy_vlan(bat_priv, vlan); /* finally free the vlan object */ - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); return 0; } @@ -727,12 +728,12 @@ static void batadv_set_lockdep_class(struct net_device *dev) } /** - * batadv_softif_init_late() - late stage initialization of soft interface + * batadv_meshif_init_late() - late stage initialization of mesh interface * @dev: registered network device to modify * * Return: error code on failures */ -static int batadv_softif_init_late(struct net_device *dev) +static int batadv_meshif_init_late(struct net_device *dev) { struct batadv_priv *bat_priv; u32 random_seqno; @@ -742,7 +743,7 @@ static int batadv_softif_init_late(struct net_device *dev) batadv_set_lockdep_class(dev); bat_priv = netdev_priv(dev); - bat_priv->soft_iface = dev; + bat_priv->mesh_iface = dev; /* batadv_interface_stats() needs to be available as soon as * register_netdevice() has been called @@ -776,20 +777,20 @@ static int batadv_softif_init_late(struct net_device *dev) atomic_set(&bat_priv->log_level, 0); #endif atomic_set(&bat_priv->fragmentation, 1); - atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN); + atomic_set(&bat_priv->packet_size_max, BATADV_MAX_MTU); atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN); atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN); atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); atomic_set(&bat_priv->bcast_seqno, 1); atomic_set(&bat_priv->tt.vn, 0); - atomic_set(&bat_priv->tt.local_changes, 0); atomic_set(&bat_priv->tt.ogm_append_cnt, 0); #ifdef CONFIG_BATMAN_ADV_BLA atomic_set(&bat_priv->bla.num_requests, 0); #endif atomic_set(&bat_priv->tp_num, 0); + WRITE_ONCE(bat_priv->tt.local_changes, 0); bat_priv->tt.last_changeset = NULL; bat_priv->tt.last_changeset_len = 0; bat_priv->isolation_mark = 0; @@ -801,8 +802,6 @@ static int batadv_softif_init_late(struct net_device *dev) bat_priv->primary_if = NULL; - batadv_nc_init_bat_priv(bat_priv); - if (!bat_priv->algo_ops) { ret = batadv_algo_select(bat_priv, batadv_routing_algo); if (ret < 0) @@ -823,14 +822,14 @@ free_bat_counters: } /** - * batadv_softif_slave_add() - Add a slave interface to a batadv_soft_interface - * @dev: batadv_soft_interface used as master interface + * batadv_meshif_slave_add() - Add a slave interface to a batadv_mesh_interface + * @dev: batadv_mesh_interface used as master interface * @slave_dev: net_device which should become the slave interface * @extack: extended ACK report struct * * Return: 0 if successful or error otherwise. */ -static int batadv_softif_slave_add(struct net_device *dev, +static int batadv_meshif_slave_add(struct net_device *dev, struct net_device *slave_dev, struct netlink_ext_ack *extack) { @@ -838,7 +837,7 @@ static int batadv_softif_slave_add(struct net_device *dev, int ret = -EINVAL; hard_iface = batadv_hardif_get_by_netdev(slave_dev); - if (!hard_iface || hard_iface->soft_iface) + if (!hard_iface || hard_iface->mesh_iface) goto out; ret = batadv_hardif_enable_interface(hard_iface, dev); @@ -849,13 +848,13 @@ out: } /** - * batadv_softif_slave_del() - Delete a slave iface from a batadv_soft_interface - * @dev: batadv_soft_interface used as master interface + * batadv_meshif_slave_del() - Delete a slave iface from a batadv_mesh_interface + * @dev: batadv_mesh_interface used as master interface * @slave_dev: net_device which should be removed from the master interface * * Return: 0 if successful or error otherwise. */ -static int batadv_softif_slave_del(struct net_device *dev, +static int batadv_meshif_slave_del(struct net_device *dev, struct net_device *slave_dev) { struct batadv_hard_iface *hard_iface; @@ -863,7 +862,7 @@ static int batadv_softif_slave_del(struct net_device *dev, hard_iface = batadv_hardif_get_by_netdev(slave_dev); - if (!hard_iface || hard_iface->soft_iface != dev) + if (!hard_iface || hard_iface->mesh_iface != dev) goto out; batadv_hardif_disable_interface(hard_iface); @@ -875,9 +874,7 @@ out: } static const struct net_device_ops batadv_netdev_ops = { - .ndo_init = batadv_softif_init_late, - .ndo_open = batadv_interface_open, - .ndo_stop = batadv_interface_release, + .ndo_init = batadv_meshif_init_late, .ndo_get_stats = batadv_interface_stats, .ndo_vlan_rx_add_vid = batadv_interface_add_vid, .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid, @@ -886,8 +883,8 @@ static const struct net_device_ops batadv_netdev_ops = { .ndo_set_rx_mode = batadv_interface_set_rx_mode, .ndo_start_xmit = batadv_interface_tx, .ndo_validate_addr = eth_validate_addr, - .ndo_add_slave = batadv_softif_slave_add, - .ndo_del_slave = batadv_softif_slave_del, + .ndo_add_slave = batadv_meshif_slave_add, + .ndo_del_slave = batadv_meshif_slave_del, }; static void batadv_get_drvinfo(struct net_device *dev, @@ -948,17 +945,6 @@ static const struct { { "dat_put_rx" }, { "dat_cached_reply_tx" }, #endif -#ifdef CONFIG_BATMAN_ADV_NC - { "nc_code" }, - { "nc_code_bytes" }, - { "nc_recode" }, - { "nc_recode_bytes" }, - { "nc_buffer" }, - { "nc_decode" }, - { "nc_decode_bytes" }, - { "nc_decode_failed" }, - { "nc_sniffed" }, -#endif }; static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data) @@ -995,10 +981,10 @@ static const struct ethtool_ops batadv_ethtool_ops = { }; /** - * batadv_softif_free() - Deconstructor of batadv_soft_interface + * batadv_meshif_free() - Deconstructor of batadv_mesh_interface * @dev: Device to cleanup and remove */ -static void batadv_softif_free(struct net_device *dev) +static void batadv_meshif_free(struct net_device *dev) { batadv_mesh_free(dev); @@ -1010,24 +996,26 @@ static void batadv_softif_free(struct net_device *dev) } /** - * batadv_softif_init_early() - early stage initialization of soft interface + * batadv_meshif_init_early() - early stage initialization of mesh interface * @dev: registered network device to modify */ -static void batadv_softif_init_early(struct net_device *dev) +static void batadv_meshif_init_early(struct net_device *dev) { ether_setup(dev); dev->netdev_ops = &batadv_netdev_ops; dev->needs_free_netdev = true; - dev->priv_destructor = batadv_softif_free; - dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_NETNS_LOCAL; - dev->features |= NETIF_F_LLTX; + dev->priv_destructor = batadv_meshif_free; + dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; dev->priv_flags |= IFF_NO_QUEUE; + dev->lltx = true; + dev->netns_immutable = true; /* can't call min_mtu, because the needed variables * have not been initialized yet */ dev->mtu = ETH_DATA_LEN; + dev->max_mtu = BATADV_MAX_MTU; /* generate random address */ eth_hw_addr_random(dev); @@ -1036,14 +1024,14 @@ static void batadv_softif_init_early(struct net_device *dev) } /** - * batadv_softif_validate() - validate configuration of new batadv link + * batadv_meshif_validate() - validate configuration of new batadv link * @tb: IFLA_INFO_DATA netlink attributes * @data: enum batadv_ifla_attrs attributes * @extack: extended ACK report struct * * Return: 0 if successful or error otherwise. */ -static int batadv_softif_validate(struct nlattr *tb[], struct nlattr *data[], +static int batadv_meshif_validate(struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) { struct batadv_algo_ops *algo_ops; @@ -1061,20 +1049,19 @@ static int batadv_softif_validate(struct nlattr *tb[], struct nlattr *data[], } /** - * batadv_softif_newlink() - pre-initialize and register new batadv link - * @src_net: the applicable net namespace + * batadv_meshif_newlink() - pre-initialize and register new batadv link * @dev: network device to register - * @tb: IFLA_INFO_DATA netlink attributes - * @data: enum batadv_ifla_attrs attributes + * @params: rtnl newlink parameters * @extack: extended ACK report struct * * Return: 0 if successful or error otherwise. */ -static int batadv_softif_newlink(struct net *src_net, struct net_device *dev, - struct nlattr *tb[], struct nlattr *data[], +static int batadv_meshif_newlink(struct net_device *dev, + struct rtnl_newlink_params *params, struct netlink_ext_ack *extack) { struct batadv_priv *bat_priv = netdev_priv(dev); + struct nlattr **data = params->data; const char *algo_name; int err; @@ -1089,40 +1076,40 @@ static int batadv_softif_newlink(struct net *src_net, struct net_device *dev, } /** - * batadv_softif_destroy_netlink() - deletion of batadv_soft_interface via + * batadv_meshif_destroy_netlink() - deletion of batadv_mesh_interface via * netlink - * @soft_iface: the to-be-removed batman-adv interface + * @mesh_iface: the to-be-removed batman-adv interface * @head: list pointer */ -static void batadv_softif_destroy_netlink(struct net_device *soft_iface, +static void batadv_meshif_destroy_netlink(struct net_device *mesh_iface, struct list_head *head) { - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); struct batadv_hard_iface *hard_iface; - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; - list_for_each_entry(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface == soft_iface) - batadv_hardif_disable_interface(hard_iface); + while (!list_empty(&mesh_iface->adj_list.lower)) { + hard_iface = netdev_adjacent_get_private(mesh_iface->adj_list.lower.next); + batadv_hardif_disable_interface(hard_iface); } /* destroy the "untagged" VLAN */ - vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); + vlan = batadv_meshif_vlan_get(bat_priv, BATADV_NO_FLAGS); if (vlan) { - batadv_softif_destroy_vlan(bat_priv, vlan); - batadv_softif_vlan_put(vlan); + batadv_meshif_destroy_vlan(bat_priv, vlan); + batadv_meshif_vlan_put(vlan); } - unregister_netdevice_queue(soft_iface, head); + unregister_netdevice_queue(mesh_iface, head); } /** - * batadv_softif_is_valid() - Check whether device is a batadv soft interface + * batadv_meshif_is_valid() - Check whether device is a batadv mesh interface * @net_dev: device which should be checked * * Return: true when net_dev is a batman-adv interface, false otherwise */ -bool batadv_softif_is_valid(const struct net_device *net_dev) +bool batadv_meshif_is_valid(const struct net_device *net_dev) { if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx) return true; @@ -1137,10 +1124,10 @@ static const struct nla_policy batadv_ifla_policy[IFLA_BATADV_MAX + 1] = { struct rtnl_link_ops batadv_link_ops __read_mostly = { .kind = "batadv", .priv_size = sizeof(struct batadv_priv), - .setup = batadv_softif_init_early, + .setup = batadv_meshif_init_early, .maxtype = IFLA_BATADV_MAX, .policy = batadv_ifla_policy, - .validate = batadv_softif_validate, - .newlink = batadv_softif_newlink, - .dellink = batadv_softif_destroy_netlink, + .validate = batadv_meshif_validate, + .newlink = batadv_meshif_newlink, + .dellink = batadv_meshif_destroy_netlink, }; diff --git a/net/batman-adv/mesh-interface.h b/net/batman-adv/mesh-interface.h new file mode 100644 index 000000000000..53756c5a45e0 --- /dev/null +++ b/net/batman-adv/mesh-interface.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) B.A.T.M.A.N. contributors: + * + * Marek Lindner + */ + +#ifndef _NET_BATMAN_ADV_MESH_INTERFACE_H_ +#define _NET_BATMAN_ADV_MESH_INTERFACE_H_ + +#include "main.h" + +#include <linux/kref.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/types.h> + +int batadv_skb_head_push(struct sk_buff *skb, unsigned int len); +void batadv_interface_rx(struct net_device *mesh_iface, + struct sk_buff *skb, int hdr_size, + struct batadv_orig_node *orig_node); +bool batadv_meshif_is_valid(const struct net_device *net_dev); +extern struct rtnl_link_ops batadv_link_ops; +int batadv_meshif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid); +void batadv_meshif_vlan_release(struct kref *ref); +struct batadv_meshif_vlan *batadv_meshif_vlan_get(struct batadv_priv *bat_priv, + unsigned short vid); + +/** + * batadv_meshif_vlan_put() - decrease the vlan object refcounter and + * possibly release it + * @vlan: the vlan object to release + */ +static inline void batadv_meshif_vlan_put(struct batadv_meshif_vlan *vlan) +{ + if (!vlan) + return; + + kref_put(&vlan->refcount, batadv_meshif_vlan_release); +} + +#endif /* _NET_BATMAN_ADV_MESH_INTERFACE_H_ */ diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c index 14088c4ff2f6..e8c6b0bf670f 100644 --- a/net/batman-adv/multicast.c +++ b/net/batman-adv/multicast.c @@ -12,6 +12,7 @@ #include <linux/bug.h> #include <linux/byteorder/generic.h> #include <linux/container_of.h> +#include <linux/err.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -46,7 +47,6 @@ #include <net/ip.h> #include <net/ipv6.h> #include <net/netlink.h> -#include <net/sock.h> #include <uapi/linux/batadv_packet.h> #include <uapi/linux/batman_adv.h> @@ -56,7 +56,6 @@ #include "log.h" #include "netlink.h" #include "send.h" -#include "soft-interface.h" #include "translation-table.h" #include "tvlv.h" @@ -64,7 +63,7 @@ static void batadv_mcast_mla_update(struct work_struct *work); /** * batadv_mcast_start_timer() - schedule the multicast periodic worker - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_mcast_start_timer(struct batadv_priv *bat_priv) { @@ -73,18 +72,18 @@ static void batadv_mcast_start_timer(struct batadv_priv *bat_priv) } /** - * batadv_mcast_get_bridge() - get the bridge on top of the softif if it exists - * @soft_iface: netdev struct of the mesh interface + * batadv_mcast_get_bridge() - get the bridge on top of the meshif if it exists + * @mesh_iface: netdev struct of the mesh interface * - * If the given soft interface has a bridge on top then the refcount + * If the given mesh interface has a bridge on top then the refcount * of the according net device is increased. * * Return: NULL if no such bridge exists. Otherwise the net device of the * bridge. */ -static struct net_device *batadv_mcast_get_bridge(struct net_device *soft_iface) +static struct net_device *batadv_mcast_get_bridge(struct net_device *mesh_iface) { - struct net_device *upper = soft_iface; + struct net_device *upper = mesh_iface; rcu_read_lock(); do { @@ -98,7 +97,7 @@ static struct net_device *batadv_mcast_get_bridge(struct net_device *soft_iface) } /** - * batadv_mcast_mla_rtr_flags_softif_get_ipv4() - get mcast router flags from + * batadv_mcast_mla_rtr_flags_meshif_get_ipv4() - get mcast router flags from * node for IPv4 * @dev: the interface to check * @@ -108,7 +107,7 @@ static struct net_device *batadv_mcast_get_bridge(struct net_device *soft_iface) * * Return: BATADV_NO_FLAGS if present, BATADV_MCAST_WANT_NO_RTR4 otherwise. */ -static u8 batadv_mcast_mla_rtr_flags_softif_get_ipv4(struct net_device *dev) +static u8 batadv_mcast_mla_rtr_flags_meshif_get_ipv4(struct net_device *dev) { struct in_device *in_dev = __in_dev_get_rcu(dev); @@ -119,7 +118,7 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get_ipv4(struct net_device *dev) } /** - * batadv_mcast_mla_rtr_flags_softif_get_ipv6() - get mcast router flags from + * batadv_mcast_mla_rtr_flags_meshif_get_ipv6() - get mcast router flags from * node for IPv6 * @dev: the interface to check * @@ -130,7 +129,7 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get_ipv4(struct net_device *dev) * Return: BATADV_NO_FLAGS if present, BATADV_MCAST_WANT_NO_RTR6 otherwise. */ #if IS_ENABLED(CONFIG_IPV6_MROUTE) -static u8 batadv_mcast_mla_rtr_flags_softif_get_ipv6(struct net_device *dev) +static u8 batadv_mcast_mla_rtr_flags_meshif_get_ipv6(struct net_device *dev) { struct inet6_dev *in6_dev = __in6_dev_get(dev); @@ -141,16 +140,16 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get_ipv6(struct net_device *dev) } #else static inline u8 -batadv_mcast_mla_rtr_flags_softif_get_ipv6(struct net_device *dev) +batadv_mcast_mla_rtr_flags_meshif_get_ipv6(struct net_device *dev) { return BATADV_MCAST_WANT_NO_RTR6; } #endif /** - * batadv_mcast_mla_rtr_flags_softif_get() - get mcast router flags from node - * @bat_priv: the bat priv with all the soft interface information - * @bridge: bridge interface on top of the soft_iface if present, + * batadv_mcast_mla_rtr_flags_meshif_get() - get mcast router flags from node + * @bat_priv: the bat priv with all the mesh interface information + * @bridge: bridge interface on top of the mesh_iface if present, * otherwise pass NULL * * Checks the presence of IPv4 and IPv6 multicast routers on this @@ -162,16 +161,16 @@ batadv_mcast_mla_rtr_flags_softif_get_ipv6(struct net_device *dev) * BATADV_MCAST_WANT_NO_RTR6: No IPv6 multicast router is present * The former two OR'd: no multicast router is present */ -static u8 batadv_mcast_mla_rtr_flags_softif_get(struct batadv_priv *bat_priv, +static u8 batadv_mcast_mla_rtr_flags_meshif_get(struct batadv_priv *bat_priv, struct net_device *bridge) { - struct net_device *dev = bridge ? bridge : bat_priv->soft_iface; + struct net_device *dev = bridge ? bridge : bat_priv->mesh_iface; u8 flags = BATADV_NO_FLAGS; rcu_read_lock(); - flags |= batadv_mcast_mla_rtr_flags_softif_get_ipv4(dev); - flags |= batadv_mcast_mla_rtr_flags_softif_get_ipv6(dev); + flags |= batadv_mcast_mla_rtr_flags_meshif_get_ipv4(dev); + flags |= batadv_mcast_mla_rtr_flags_meshif_get_ipv6(dev); rcu_read_unlock(); @@ -180,8 +179,8 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get(struct batadv_priv *bat_priv, /** * batadv_mcast_mla_rtr_flags_bridge_get() - get mcast router flags from bridge - * @bat_priv: the bat priv with all the soft interface information - * @bridge: bridge interface on top of the soft_iface if present, + * @bat_priv: the bat priv with all the mesh interface information + * @bridge: bridge interface on top of the mesh_iface if present, * otherwise pass NULL * * Checks the presence of IPv4 and IPv6 multicast routers behind a bridge. @@ -195,7 +194,7 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get(struct batadv_priv *bat_priv, static u8 batadv_mcast_mla_rtr_flags_bridge_get(struct batadv_priv *bat_priv, struct net_device *bridge) { - struct net_device *dev = bat_priv->soft_iface; + struct net_device *dev = bat_priv->mesh_iface; u8 flags = BATADV_NO_FLAGS; if (!bridge) @@ -211,8 +210,8 @@ static u8 batadv_mcast_mla_rtr_flags_bridge_get(struct batadv_priv *bat_priv, /** * batadv_mcast_mla_rtr_flags_get() - get multicast router flags - * @bat_priv: the bat priv with all the soft interface information - * @bridge: bridge interface on top of the soft_iface if present, + * @bat_priv: the bat priv with all the mesh interface information + * @bridge: bridge interface on top of the mesh_iface if present, * otherwise pass NULL * * Checks the presence of IPv4 and IPv6 multicast routers on this @@ -229,7 +228,7 @@ static u8 batadv_mcast_mla_rtr_flags_get(struct batadv_priv *bat_priv, { u8 flags = BATADV_MCAST_WANT_NO_RTR4 | BATADV_MCAST_WANT_NO_RTR6; - flags &= batadv_mcast_mla_rtr_flags_softif_get(bat_priv, bridge); + flags &= batadv_mcast_mla_rtr_flags_meshif_get(bat_priv, bridge); flags &= batadv_mcast_mla_rtr_flags_bridge_get(bat_priv, bridge); return flags; @@ -237,7 +236,7 @@ static u8 batadv_mcast_mla_rtr_flags_get(struct batadv_priv *bat_priv, /** * batadv_mcast_mla_forw_flags_get() - get multicast forwarding flags - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Checks if all active hard interfaces have an MTU larger or equal to 1280 * bytes (IPv6 minimum MTU). @@ -247,15 +246,13 @@ static u8 batadv_mcast_mla_rtr_flags_get(struct batadv_priv *bat_priv, static u8 batadv_mcast_mla_forw_flags_get(struct batadv_priv *bat_priv) { const struct batadv_hard_iface *hard_iface; + struct list_head *iter; rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (hard_iface->if_status != BATADV_IF_ACTIVE) continue; - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - if (hard_iface->net_dev->mtu < IPV6_MIN_MTU) { rcu_read_unlock(); return BATADV_NO_FLAGS; @@ -268,7 +265,7 @@ static u8 batadv_mcast_mla_forw_flags_get(struct batadv_priv *bat_priv) /** * batadv_mcast_mla_flags_get() - get the new multicast flags - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: A set of flags for the current/next TVLV, querier and * bridge state. @@ -276,7 +273,7 @@ static u8 batadv_mcast_mla_forw_flags_get(struct batadv_priv *bat_priv) static struct batadv_mcast_mla_flags batadv_mcast_mla_flags_get(struct batadv_priv *bat_priv) { - struct net_device *dev = bat_priv->soft_iface; + struct net_device *dev = bat_priv->mesh_iface; struct batadv_mcast_querier_state *qr4, *qr6; struct batadv_mcast_mla_flags mla_flags; struct net_device *bridge; @@ -352,13 +349,13 @@ static bool batadv_mcast_mla_is_duplicate(u8 *mcast_addr, } /** - * batadv_mcast_mla_softif_get_ipv4() - get softif IPv4 multicast listeners + * batadv_mcast_mla_meshif_get_ipv4() - get meshif IPv4 multicast listeners * @dev: the device to collect multicast addresses from * @mcast_list: a list to put found addresses into * @flags: flags indicating the new multicast state * * Collects multicast addresses of IPv4 multicast listeners residing - * on this kernel on the given soft interface, dev, in + * on this kernel on the given mesh interface, dev, in * the given mcast_list. In general, multicast listeners provided by * your multicast receiving applications run directly on this node. * @@ -366,7 +363,7 @@ static bool batadv_mcast_mla_is_duplicate(u8 *mcast_addr, * items added to the mcast_list otherwise. */ static int -batadv_mcast_mla_softif_get_ipv4(struct net_device *dev, +batadv_mcast_mla_meshif_get_ipv4(struct net_device *dev, struct hlist_head *mcast_list, struct batadv_mcast_mla_flags *flags) { @@ -418,13 +415,13 @@ batadv_mcast_mla_softif_get_ipv4(struct net_device *dev, } /** - * batadv_mcast_mla_softif_get_ipv6() - get softif IPv6 multicast listeners + * batadv_mcast_mla_meshif_get_ipv6() - get meshif IPv6 multicast listeners * @dev: the device to collect multicast addresses from * @mcast_list: a list to put found addresses into * @flags: flags indicating the new multicast state * * Collects multicast addresses of IPv6 multicast listeners residing - * on this kernel on the given soft interface, dev, in + * on this kernel on the given mesh interface, dev, in * the given mcast_list. In general, multicast listeners provided by * your multicast receiving applications run directly on this node. * @@ -433,7 +430,7 @@ batadv_mcast_mla_softif_get_ipv4(struct net_device *dev, */ #if IS_ENABLED(CONFIG_IPV6) static int -batadv_mcast_mla_softif_get_ipv6(struct net_device *dev, +batadv_mcast_mla_meshif_get_ipv6(struct net_device *dev, struct hlist_head *mcast_list, struct batadv_mcast_mla_flags *flags) { @@ -491,7 +488,7 @@ batadv_mcast_mla_softif_get_ipv6(struct net_device *dev, } #else static inline int -batadv_mcast_mla_softif_get_ipv6(struct net_device *dev, +batadv_mcast_mla_meshif_get_ipv6(struct net_device *dev, struct hlist_head *mcast_list, struct batadv_mcast_mla_flags *flags) { @@ -500,13 +497,13 @@ batadv_mcast_mla_softif_get_ipv6(struct net_device *dev, #endif /** - * batadv_mcast_mla_softif_get() - get softif multicast listeners + * batadv_mcast_mla_meshif_get() - get meshif multicast listeners * @dev: the device to collect multicast addresses from * @mcast_list: a list to put found addresses into * @flags: flags indicating the new multicast state * * Collects multicast addresses of multicast listeners residing - * on this kernel on the given soft interface, dev, in + * on this kernel on the given mesh interface, dev, in * the given mcast_list. In general, multicast listeners provided by * your multicast receiving applications run directly on this node. * @@ -519,7 +516,7 @@ batadv_mcast_mla_softif_get_ipv6(struct net_device *dev, * items added to the mcast_list otherwise. */ static int -batadv_mcast_mla_softif_get(struct net_device *dev, +batadv_mcast_mla_meshif_get(struct net_device *dev, struct hlist_head *mcast_list, struct batadv_mcast_mla_flags *flags) { @@ -529,11 +526,11 @@ batadv_mcast_mla_softif_get(struct net_device *dev, if (bridge) dev = bridge; - ret4 = batadv_mcast_mla_softif_get_ipv4(dev, mcast_list, flags); + ret4 = batadv_mcast_mla_meshif_get_ipv4(dev, mcast_list, flags); if (ret4 < 0) goto out; - ret6 = batadv_mcast_mla_softif_get_ipv6(dev, mcast_list, flags); + ret6 = batadv_mcast_mla_meshif_get_ipv6(dev, mcast_list, flags); if (ret6 < 0) { ret4 = 0; goto out; @@ -577,7 +574,7 @@ static void batadv_mcast_mla_br_addr_cpy(char *dst, const struct br_ip *src) * * Collects multicast addresses of multicast listeners residing * on foreign, non-mesh devices which we gave access to our mesh via - * a bridge on top of the given soft interface, dev, in the given + * a bridge on top of the given mesh interface, dev, in the given * mcast_list. * * Return: -ENOMEM on memory allocation error or the number of @@ -673,7 +670,7 @@ static void batadv_mcast_mla_list_free(struct hlist_head *mcast_list) /** * batadv_mcast_mla_tt_retract() - clean up multicast listener announcements - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @mcast_list: a list of addresses which should _not_ be removed * * Retracts the announcement of any multicast listener from the @@ -705,7 +702,7 @@ static void batadv_mcast_mla_tt_retract(struct batadv_priv *bat_priv, /** * batadv_mcast_mla_tt_add() - add multicast listener announcements - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @mcast_list: a list of addresses which are going to get added * * Adds multicast listener announcements from the given mcast_list to the @@ -725,7 +722,7 @@ static void batadv_mcast_mla_tt_add(struct batadv_priv *bat_priv, &bat_priv->mcast.mla_list)) continue; - if (!batadv_tt_local_add(bat_priv->soft_iface, + if (!batadv_tt_local_add(bat_priv->mesh_iface, mcast_entry->addr, BATADV_NO_FLAGS, BATADV_NULL_IFINDEX, BATADV_NO_MARK)) continue; @@ -738,7 +735,7 @@ static void batadv_mcast_mla_tt_add(struct batadv_priv *bat_priv, /** * batadv_mcast_querier_log() - debug output regarding the querier status on * link - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @str_proto: a string for the querier protocol (e.g. "IGMP" or "MLD") * @old_state: the previous querier state on our link * @new_state: the new querier state on our link @@ -755,7 +752,7 @@ static void batadv_mcast_mla_tt_add(struct batadv_priv *bat_priv, * potentially shadowing listeners from us then. * * This is only interesting for nodes with a bridge on top of their - * soft interface. + * mesh interface. */ static void batadv_mcast_querier_log(struct batadv_priv *bat_priv, char *str_proto, @@ -763,14 +760,14 @@ batadv_mcast_querier_log(struct batadv_priv *bat_priv, char *str_proto, struct batadv_mcast_querier_state *new_state) { if (!old_state->exists && new_state->exists) - batadv_info(bat_priv->soft_iface, "%s Querier appeared\n", + batadv_info(bat_priv->mesh_iface, "%s Querier appeared\n", str_proto); else if (old_state->exists && !new_state->exists) - batadv_info(bat_priv->soft_iface, + batadv_info(bat_priv->mesh_iface, "%s Querier disappeared - multicast optimizations disabled\n", str_proto); else if (!bat_priv->mcast.mla_flags.bridged && !new_state->exists) - batadv_info(bat_priv->soft_iface, + batadv_info(bat_priv->mesh_iface, "No %s Querier present - multicast optimizations disabled\n", str_proto); @@ -790,7 +787,7 @@ batadv_mcast_querier_log(struct batadv_priv *bat_priv, char *str_proto, /** * batadv_mcast_bridge_log() - debug output for topology changes in bridged * setups - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @new_flags: flags indicating the new multicast state * * If no bridges are ever used on this node, then this function does nothing. @@ -799,7 +796,7 @@ batadv_mcast_querier_log(struct batadv_priv *bat_priv, char *str_proto, * which might be relevant to our multicast optimizations. * * More precisely, it outputs information when a bridge interface is added or - * removed from a soft interface. And when a bridge is present, it further + * removed from a mesh interface. And when a bridge is present, it further * outputs information about the querier state which is relevant for the * multicast flags this node is going to set. */ @@ -828,7 +825,7 @@ batadv_mcast_bridge_log(struct batadv_priv *bat_priv, /** * batadv_mcast_flags_log() - output debug information about mcast flag changes - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @flags: TVLV flags indicating the new multicast state * * Whenever the multicast TVLV flags this node announces change, this function @@ -861,7 +858,7 @@ static void batadv_mcast_flags_log(struct batadv_priv *bat_priv, u8 flags) /** * batadv_mcast_mla_flags_update() - update multicast flags - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @flags: flags indicating the new multicast state * * Updates the own multicast tvlv with our current multicast related settings, @@ -890,7 +887,7 @@ batadv_mcast_mla_flags_update(struct batadv_priv *bat_priv, /** * __batadv_mcast_mla_update() - update the own MLAs - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Updates the own multicast listener announcements in the translation * table as well as the own, announced multicast tvlv container. @@ -902,18 +899,18 @@ batadv_mcast_mla_flags_update(struct batadv_priv *bat_priv, */ static void __batadv_mcast_mla_update(struct batadv_priv *bat_priv) { - struct net_device *soft_iface = bat_priv->soft_iface; + struct net_device *mesh_iface = bat_priv->mesh_iface; struct hlist_head mcast_list = HLIST_HEAD_INIT; struct batadv_mcast_mla_flags flags; int ret; flags = batadv_mcast_mla_flags_get(bat_priv); - ret = batadv_mcast_mla_softif_get(soft_iface, &mcast_list, &flags); + ret = batadv_mcast_mla_meshif_get(mesh_iface, &mcast_list, &flags); if (ret < 0) goto out; - ret = batadv_mcast_mla_bridge_get(soft_iface, &mcast_list, &flags); + ret = batadv_mcast_mla_bridge_get(mesh_iface, &mcast_list, &flags); if (ret < 0) goto out; @@ -978,7 +975,7 @@ static bool batadv_mcast_is_report_ipv4(struct sk_buff *skb) /** * batadv_mcast_forw_mode_check_ipv4() - check for optimized forwarding * potential - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the IPv4 packet to check * @is_unsnoopable: stores whether the destination is snoopable * @is_routable: stores whether the destination is routable @@ -1043,7 +1040,7 @@ static bool batadv_mcast_is_report_ipv6(struct sk_buff *skb) /** * batadv_mcast_forw_mode_check_ipv6() - check for optimized forwarding * potential - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the IPv6 packet to check * @is_unsnoopable: stores whether the destination is snoopable * @is_routable: stores whether the destination is routable @@ -1085,7 +1082,7 @@ static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_mode_check() - check for optimized forwarding potential - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast frame to check * @is_unsnoopable: stores whether the destination is snoopable * @is_routable: stores whether the destination is routable @@ -1125,7 +1122,7 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_want_all_ip_count() - count nodes with unspecific mcast * interest - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @ethhdr: ethernet header of a packet * * Return: the number of nodes which want all IPv4 multicast traffic if the @@ -1148,7 +1145,7 @@ static int batadv_mcast_forw_want_all_ip_count(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_rtr_count() - count nodes with a multicast router - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @protocol: the ethernet protocol type to count multicast routers for * * Return: the number of nodes which want all routable IPv4 multicast traffic @@ -1171,7 +1168,7 @@ static int batadv_mcast_forw_rtr_count(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_mode_by_count() - get forwarding mode by count - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to check * @vid: the vlan identifier * @is_routable: stores whether the destination is routable @@ -1215,7 +1212,7 @@ batadv_mcast_forw_mode_by_count(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_mode() - check on how to forward a multicast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to check * @vid: the vlan identifier * @is_routable: stores whether the destination is routable @@ -1260,7 +1257,7 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, /** * batadv_mcast_forw_send_orig() - send a multicast packet to an originator - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to send * @vid: the vlan identifier * @orig_node: the originator to send the packet to @@ -1289,7 +1286,7 @@ static int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_tt() - forwards a packet to multicast listeners - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to transmit * @vid: the vlan identifier * @@ -1337,7 +1334,7 @@ out: /** * batadv_mcast_forw_want_all_ipv4() - forward to nodes with want-all-ipv4 - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to transmit * @vid: the vlan identifier * @@ -1374,7 +1371,7 @@ batadv_mcast_forw_want_all_ipv4(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_want_all_ipv6() - forward to nodes with want-all-ipv6 - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: The multicast packet to transmit * @vid: the vlan identifier * @@ -1411,7 +1408,7 @@ batadv_mcast_forw_want_all_ipv6(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_want_all() - forward packet to nodes in a want-all list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to transmit * @vid: the vlan identifier * @@ -1440,7 +1437,7 @@ batadv_mcast_forw_want_all(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_want_all_rtr4() - forward to nodes with want-all-rtr4 - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to transmit * @vid: the vlan identifier * @@ -1477,7 +1474,7 @@ batadv_mcast_forw_want_all_rtr4(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_want_all_rtr6() - forward to nodes with want-all-rtr6 - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: The multicast packet to transmit * @vid: the vlan identifier * @@ -1514,7 +1511,7 @@ batadv_mcast_forw_want_all_rtr6(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_want_rtr() - forward packet to nodes in a want-all-rtr list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to transmit * @vid: the vlan identifier * @@ -1543,7 +1540,7 @@ batadv_mcast_forw_want_rtr(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_send() - send packet to any detected multicast recipient - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to transmit * @vid: the vlan identifier * @is_routable: stores whether the destination is routable @@ -1591,7 +1588,7 @@ skip_mc_router: /** * batadv_mcast_want_unsnoop_update() - update unsnoop counter and list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state * @@ -1637,7 +1634,7 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv, /** * batadv_mcast_want_ipv4_update() - update want-all-ipv4 counter and list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state * @@ -1682,7 +1679,7 @@ static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv, /** * batadv_mcast_want_ipv6_update() - update want-all-ipv6 counter and list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state * @@ -1727,7 +1724,7 @@ static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv, /** * batadv_mcast_want_rtr4_update() - update want-all-rtr4 counter and list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state * @@ -1772,7 +1769,7 @@ static void batadv_mcast_want_rtr4_update(struct batadv_priv *bat_priv, /** * batadv_mcast_want_rtr6_update() - update want-all-rtr6 counter and list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state * @@ -1817,7 +1814,7 @@ static void batadv_mcast_want_rtr6_update(struct batadv_priv *bat_priv, /** * batadv_mcast_have_mc_ptype_update() - update multicast packet type counter - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state * @@ -1873,7 +1870,7 @@ batadv_mcast_tvlv_flags_get(bool enabled, void *tvlv_value, u16 tvlv_value_len) /** * batadv_mcast_tvlv_ogm_handler() - process incoming multicast tvlv container - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) * @tvlv_value: tvlv buffer containing the multicast data @@ -1916,7 +1913,7 @@ static void batadv_mcast_tvlv_ogm_handler(struct batadv_priv *bat_priv, /** * batadv_mcast_init() - initialize the multicast optimizations structures - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_mcast_init(struct batadv_priv *bat_priv) { @@ -1935,7 +1932,7 @@ void batadv_mcast_init(struct batadv_priv *bat_priv) /** * batadv_mcast_mesh_info_put() - put multicast info into a netlink message * @msg: buffer for the message - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 or error code. */ @@ -2061,7 +2058,7 @@ skip: * @msg: buffer for the message * @portid: netlink port * @cb: Control block containing additional options - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @bucket: current bucket to dump * @idx: index in current bucket to the next entry to dump * @@ -2104,23 +2101,15 @@ batadv_mcast_netlink_get_primary(struct netlink_callback *cb, struct batadv_hard_iface **primary_if) { struct batadv_hard_iface *hard_iface = NULL; - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; + struct net_device *mesh_iface; struct batadv_priv *bat_priv; - int ifindex; int ret = 0; - ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; - - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); hard_iface = batadv_primary_if_get_selected(bat_priv); if (!hard_iface || hard_iface->if_status != BATADV_IF_ACTIVE) { @@ -2129,7 +2118,7 @@ batadv_mcast_netlink_get_primary(struct netlink_callback *cb, } out: - dev_put(soft_iface); + dev_put(mesh_iface); if (!ret && primary_if) *primary_if = hard_iface; @@ -2159,7 +2148,7 @@ int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb) if (ret) return ret; - bat_priv = netdev_priv(primary_if->soft_iface); + bat_priv = netdev_priv(primary_if->mesh_iface); ret = __batadv_mcast_flags_dump(msg, portid, cb, bat_priv, bucket, idx); batadv_hardif_put(primary_if); @@ -2168,7 +2157,7 @@ int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb) /** * batadv_mcast_free() - free the multicast optimizations structures - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_mcast_free(struct batadv_priv *bat_priv) { diff --git a/net/batman-adv/multicast_forw.c b/net/batman-adv/multicast_forw.c index fafd6ba8c056..b8668a80b94a 100644 --- a/net/batman-adv/multicast_forw.c +++ b/net/batman-adv/multicast_forw.c @@ -131,7 +131,7 @@ batadv_mcast_forw_orig_entry(struct hlist_node *node, /** * batadv_mcast_forw_push_dest() - push an originator MAC address onto an skb - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the skb to push the destination address onto * @vid: the vlan identifier * @orig_node: the originator node to get the MAC address from @@ -174,7 +174,7 @@ static bool batadv_mcast_forw_push_dest(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_push_dests_list() - push originators from list onto an skb - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the skb to push the destination addresses onto * @vid: the vlan identifier * @head: the list to gather originators from @@ -215,7 +215,7 @@ static int batadv_mcast_forw_push_dests_list(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_push_tt() - push originators with interest through TT - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the skb to push the destination addresses onto * @vid: the vlan identifier * @num_dests: a pointer to store the number of pushed addresses in @@ -262,7 +262,7 @@ out: /** * batadv_mcast_forw_push_want_all() - push originators with want-all flag - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the skb to push the destination addresses onto * @vid: the vlan identifier * @num_dests: a pointer to store the number of pushed addresses in @@ -308,7 +308,7 @@ static bool batadv_mcast_forw_push_want_all(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_push_want_rtr() - push originators with want-router flag - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the skb to push the destination addresses onto * @vid: the vlan identifier * @num_dests: a pointer to store the number of pushed addresses in @@ -475,7 +475,7 @@ out: /** * batadv_mcast_forw_push_dests() - push originator addresses onto an skb - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the skb to push the destination addresses onto * @vid: the vlan identifier * @is_routable: indicates whether the destination is routable @@ -567,7 +567,7 @@ static int batadv_mcast_forw_push_tracker(struct sk_buff *skb, int num_dests, /** * batadv_mcast_forw_push_tvlvs() - push a multicast tracker TVLV onto an skb - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the skb to push the tracker TVLV onto * @vid: the vlan identifier * @is_routable: indicates whether the destination is routable @@ -634,7 +634,7 @@ batadv_mcast_forw_push_hdr(struct sk_buff *skb, unsigned short tvlv_len) /** * batadv_mcast_forw_scrub_dests() - scrub destinations in a tracker TVLV - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @comp_neigh: next hop neighbor to scrub+collect destinations for * @dest: start MAC entry in original skb's tracker TVLV * @next_dest: start MAC entry in to be sent skb's tracker TVLV @@ -905,7 +905,7 @@ static void batadv_mcast_forw_shrink_tracker(struct sk_buff *skb) /** * batadv_mcast_forw_packet() - forward a batman-adv multicast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the received or locally generated batman-adv multicast packet * @local_xmit: indicates that the packet was locally generated and not received * @@ -920,7 +920,7 @@ static void batadv_mcast_forw_shrink_tracker(struct sk_buff *skb) * * Return: NET_RX_SUCCESS or NET_RX_DROP on success or a negative error * code on failure. NET_RX_SUCCESS if the received packet is supposed to be - * decapsulated and forwarded to the own soft interface, NET_RX_DROP otherwise. + * decapsulated and forwarded to the own mesh interface, NET_RX_DROP otherwise. */ static int batadv_mcast_forw_packet(struct batadv_priv *bat_priv, struct sk_buff *skb, bool local_xmit) @@ -1028,7 +1028,7 @@ static int batadv_mcast_forw_packet(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_tracker_tvlv_handler() - handle an mcast tracker tvlv - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the received batman-adv multicast packet * * Parses the tracker TVLV of an incoming batman-adv multicast packet and @@ -1042,7 +1042,7 @@ static int batadv_mcast_forw_packet(struct batadv_priv *bat_priv, * * Return: NET_RX_SUCCESS or NET_RX_DROP on success or a negative error * code on failure. NET_RX_SUCCESS if the received packet is supposed to be - * decapsulated and forwarded to the own soft interface, NET_RX_DROP otherwise. + * decapsulated and forwarded to the own mesh interface, NET_RX_DROP otherwise. */ int batadv_mcast_forw_tracker_tvlv_handler(struct batadv_priv *bat_priv, struct sk_buff *skb) @@ -1075,7 +1075,7 @@ unsigned int batadv_mcast_forw_packet_hdrlen(unsigned int num_dests) /** * batadv_mcast_forw_expand_head() - expand headroom for an mcast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to send * * Tries to expand an skb's headroom so that its head to tail is 1298 @@ -1110,7 +1110,7 @@ static int batadv_mcast_forw_expand_head(struct batadv_priv *bat_priv, /** * batadv_mcast_forw_push() - encapsulate skb in a batman-adv multicast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to encapsulate and send * @vid: the vlan identifier * @is_routable: indicates whether the destination is routable @@ -1154,7 +1154,7 @@ err: /** * batadv_mcast_forw_mcsend() - send a self prepared batman-adv multicast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the multicast packet to encapsulate and send * * Transmits a batman-adv multicast packet that was locally prepared and diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index 9362cd9d6f3d..78c651f634cd 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -20,7 +20,6 @@ #include <linux/if_vlan.h> #include <linux/init.h> #include <linux/limits.h> -#include <linux/list.h> #include <linux/minmax.h> #include <linux/netdevice.h> #include <linux/netlink.h> @@ -43,10 +42,9 @@ #include "gateway_common.h" #include "hard-interface.h" #include "log.h" +#include "mesh-interface.h" #include "multicast.h" -#include "network-coding.h" #include "originator.h" -#include "soft-interface.h" #include "tp_meter.h" #include "translation-table.h" @@ -63,7 +61,7 @@ enum batadv_netlink_multicast_groups { */ enum batadv_genl_ops_flags { /** - * @BATADV_FLAG_NEED_MESH: request requires valid soft interface in + * @BATADV_FLAG_NEED_MESH: request requires valid mesh interface in * attribute BATADV_ATTR_MESH_IFINDEX and expects a pointer to it to be * saved in info->user_ptr[0] */ @@ -145,7 +143,6 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { [BATADV_ATTR_LOG_LEVEL] = { .type = NLA_U32 }, [BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED] = { .type = NLA_U8 }, [BATADV_ATTR_MULTICAST_FANOUT] = { .type = NLA_U32 }, - [BATADV_ATTR_NETWORK_CODING_ENABLED] = { .type = NLA_U8 }, [BATADV_ATTR_ORIG_INTERVAL] = { .type = NLA_U32 }, [BATADV_ATTR_ELP_INTERVAL] = { .type = NLA_U32 }, [BATADV_ATTR_THROUGHPUT_OVERRIDE] = { .type = NLA_U32 }, @@ -158,8 +155,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { * * Return: interface index, or 0. */ -int -batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype) +static int batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype) { struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype); @@ -167,24 +163,24 @@ batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype) } /** - * batadv_netlink_mesh_fill_ap_isolation() - Add ap_isolation softif attribute + * batadv_netlink_mesh_fill_ap_isolation() - Add ap_isolation meshif attribute * @msg: Netlink message to dump into - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 on success or negative error number in case of failure */ static int batadv_netlink_mesh_fill_ap_isolation(struct sk_buff *msg, struct batadv_priv *bat_priv) { - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; u8 ap_isolation; - vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); + vlan = batadv_meshif_vlan_get(bat_priv, BATADV_NO_FLAGS); if (!vlan) return 0; ap_isolation = atomic_read(&vlan->ap_isolation); - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); return nla_put_u8(msg, BATADV_ATTR_AP_ISOLATION_ENABLED, !!ap_isolation); @@ -193,21 +189,21 @@ static int batadv_netlink_mesh_fill_ap_isolation(struct sk_buff *msg, /** * batadv_netlink_set_mesh_ap_isolation() - Set ap_isolation from genl msg * @attr: parsed BATADV_ATTR_AP_ISOLATION_ENABLED attribute - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 on success or negative error number in case of failure */ static int batadv_netlink_set_mesh_ap_isolation(struct nlattr *attr, struct batadv_priv *bat_priv) { - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; - vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); + vlan = batadv_meshif_vlan_get(bat_priv, BATADV_NO_FLAGS); if (!vlan) return -ENOENT; atomic_set(&vlan->ap_isolation, !!nla_get_u8(attr)); - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); return 0; } @@ -215,7 +211,7 @@ static int batadv_netlink_set_mesh_ap_isolation(struct nlattr *attr, /** * batadv_netlink_mesh_fill() - Fill message with mesh attributes * @msg: Netlink message to dump into - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @cmd: type of message to generate * @portid: Port making netlink request * @seq: sequence number for message @@ -228,7 +224,7 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg, enum batadv_nl_commands cmd, u32 portid, u32 seq, int flags) { - struct net_device *soft_iface = bat_priv->soft_iface; + struct net_device *mesh_iface = bat_priv->mesh_iface; struct batadv_hard_iface *primary_if = NULL; struct net_device *hard_iface; void *hdr; @@ -240,10 +236,10 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg, if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) || nla_put_string(msg, BATADV_ATTR_ALGO_NAME, bat_priv->algo_ops->name) || - nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) || - nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) || + nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, mesh_iface->ifindex) || + nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, mesh_iface->name) || nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN, - soft_iface->dev_addr) || + mesh_iface->dev_addr) || nla_put_u8(msg, BATADV_ATTR_TT_TTVN, (u8)atomic_read(&bat_priv->tt.vn))) goto nla_put_failure; @@ -347,12 +343,6 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg, goto nla_put_failure; #endif /* CONFIG_BATMAN_ADV_MCAST */ -#ifdef CONFIG_BATMAN_ADV_NC - if (nla_put_u8(msg, BATADV_ATTR_NETWORK_CODING_ENABLED, - !!atomic_read(&bat_priv->network_coding))) - goto nla_put_failure; -#endif /* CONFIG_BATMAN_ADV_NC */ - if (nla_put_u32(msg, BATADV_ATTR_ORIG_INTERVAL, atomic_read(&bat_priv->orig_interval))) goto nla_put_failure; @@ -370,8 +360,8 @@ nla_put_failure: } /** - * batadv_netlink_notify_mesh() - send softif attributes to listener - * @bat_priv: the bat priv with all the soft interface information + * batadv_netlink_notify_mesh() - send meshif attributes to listener + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 on success, < 0 on error */ @@ -392,14 +382,14 @@ static int batadv_netlink_notify_mesh(struct batadv_priv *bat_priv) } genlmsg_multicast_netns(&batadv_netlink_family, - dev_net(bat_priv->soft_iface), msg, 0, + dev_net(bat_priv->mesh_iface), msg, 0, BATADV_NL_MCGRP_CONFIG, GFP_KERNEL); return 0; } /** - * batadv_netlink_get_mesh() - Get softif attributes + * batadv_netlink_get_mesh() - Get meshif attributes * @skb: Netlink message with request data * @info: receiver information * @@ -428,7 +418,7 @@ static int batadv_netlink_get_mesh(struct sk_buff *skb, struct genl_info *info) } /** - * batadv_netlink_set_mesh() - Set softif attributes + * batadv_netlink_set_mesh() - Set meshif attributes * @skb: Netlink message with request data * @info: receiver information * @@ -475,7 +465,7 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info) atomic_set(&bat_priv->bridge_loop_avoidance, !!nla_get_u8(attr)); - batadv_bla_status_update(bat_priv->soft_iface); + batadv_bla_status_update(bat_priv->mesh_iface); } #endif /* CONFIG_BATMAN_ADV_BLA */ @@ -485,7 +475,7 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info) atomic_set(&bat_priv->distributed_arp_table, !!nla_get_u8(attr)); - batadv_dat_status_update(bat_priv->soft_iface); + batadv_dat_status_update(bat_priv->mesh_iface); } #endif /* CONFIG_BATMAN_ADV_DAT */ @@ -495,7 +485,7 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info) atomic_set(&bat_priv->fragmentation, !!nla_get_u8(attr)); rtnl_lock(); - batadv_update_min_mtu(bat_priv->soft_iface); + batadv_update_min_mtu(bat_priv->mesh_iface); rtnl_unlock(); } @@ -590,15 +580,6 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info) } #endif /* CONFIG_BATMAN_ADV_MCAST */ -#ifdef CONFIG_BATMAN_ADV_NC - if (info->attrs[BATADV_ATTR_NETWORK_CODING_ENABLED]) { - attr = info->attrs[BATADV_ATTR_NETWORK_CODING_ENABLED]; - - atomic_set(&bat_priv->network_coding, !!nla_get_u8(attr)); - batadv_nc_status_update(bat_priv->soft_iface); - } -#endif /* CONFIG_BATMAN_ADV_NC */ - if (info->attrs[BATADV_ATTR_ORIG_INTERVAL]) { u32 orig_interval; @@ -634,7 +615,7 @@ batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie) /** * batadv_netlink_tpmeter_notify() - send tp_meter result via netlink to client - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @dst: destination of tp_meter session * @result: reason for tp meter session stop * @test_time: total time of the tp_meter session @@ -681,7 +662,7 @@ int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst, genlmsg_end(msg, hdr); genlmsg_multicast_netns(&batadv_netlink_family, - dev_net(bat_priv->soft_iface), msg, 0, + dev_net(bat_priv->mesh_iface), msg, 0, BATADV_NL_MCGRP_TPMETER, GFP_KERNEL); return 0; @@ -779,7 +760,7 @@ batadv_netlink_tp_meter_cancel(struct sk_buff *skb, struct genl_info *info) /** * batadv_netlink_hardif_fill() - Fill message with hardif attributes * @msg: Netlink message to dump into - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @hard_iface: hard interface which was modified * @cmd: type of message to generate * @portid: Port making netlink request @@ -807,11 +788,11 @@ static int batadv_netlink_hardif_fill(struct sk_buff *msg, genl_dump_check_consistent(cb, hdr); if (nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, - bat_priv->soft_iface->ifindex)) + bat_priv->mesh_iface->ifindex)) goto nla_put_failure; if (nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, - bat_priv->soft_iface->name)) + bat_priv->mesh_iface->name)) goto nla_put_failure; if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, @@ -851,7 +832,7 @@ nla_put_failure: /** * batadv_netlink_notify_hardif() - send hardif attributes to listener - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @hard_iface: hard interface which was modified * * Return: 0 on success, < 0 on error @@ -874,21 +855,21 @@ static int batadv_netlink_notify_hardif(struct batadv_priv *bat_priv, } genlmsg_multicast_netns(&batadv_netlink_family, - dev_net(bat_priv->soft_iface), msg, 0, + dev_net(bat_priv->mesh_iface), msg, 0, BATADV_NL_MCGRP_CONFIG, GFP_KERNEL); return 0; } /** - * batadv_netlink_get_hardif() - Get hardif attributes + * batadv_netlink_cmd_get_hardif() - Get hardif attributes * @skb: Netlink message with request data * @info: receiver information * * Return: 0 on success or negative error number in case of failure */ -static int batadv_netlink_get_hardif(struct sk_buff *skb, - struct genl_info *info) +static int batadv_netlink_cmd_get_hardif(struct sk_buff *skb, + struct genl_info *info) { struct batadv_hard_iface *hard_iface = info->user_ptr[1]; struct batadv_priv *bat_priv = info->user_ptr[0]; @@ -964,38 +945,24 @@ static int batadv_netlink_set_hardif(struct sk_buff *skb, static int batadv_netlink_dump_hardif(struct sk_buff *msg, struct netlink_callback *cb) { - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; + struct net_device *mesh_iface; struct batadv_hard_iface *hard_iface; struct batadv_priv *bat_priv; - int ifindex; int portid = NETLINK_CB(cb->skb).portid; int skip = cb->args[0]; + struct list_head *iter; int i = 0; - ifindex = batadv_netlink_get_ifindex(cb->nlh, - BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface) - return -ENODEV; - - if (!batadv_softif_is_valid(soft_iface)) { - dev_put(soft_iface); - return -ENODEV; - } - - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); rtnl_lock(); cb->seq = batadv_hardif_generation << 1 | 1; - list_for_each_entry(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != soft_iface) - continue; - + netdev_for_each_lower_private(mesh_iface, hard_iface, iter) { if (i++ < skip) continue; @@ -1010,7 +977,7 @@ batadv_netlink_dump_hardif(struct sk_buff *msg, struct netlink_callback *cb) rtnl_unlock(); - dev_put(soft_iface); + dev_put(mesh_iface); cb->args[0] = i; @@ -1020,7 +987,7 @@ batadv_netlink_dump_hardif(struct sk_buff *msg, struct netlink_callback *cb) /** * batadv_netlink_vlan_fill() - Fill message with vlan attributes * @msg: Netlink message to dump into - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @vlan: vlan which was modified * @cmd: type of message to generate * @portid: Port making netlink request @@ -1031,7 +998,7 @@ batadv_netlink_dump_hardif(struct sk_buff *msg, struct netlink_callback *cb) */ static int batadv_netlink_vlan_fill(struct sk_buff *msg, struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan, + struct batadv_meshif_vlan *vlan, enum batadv_nl_commands cmd, u32 portid, u32 seq, int flags) { @@ -1042,11 +1009,11 @@ static int batadv_netlink_vlan_fill(struct sk_buff *msg, return -ENOBUFS; if (nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, - bat_priv->soft_iface->ifindex)) + bat_priv->mesh_iface->ifindex)) goto nla_put_failure; if (nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, - bat_priv->soft_iface->name)) + bat_priv->mesh_iface->name)) goto nla_put_failure; if (nla_put_u32(msg, BATADV_ATTR_VLANID, vlan->vid & VLAN_VID_MASK)) @@ -1066,13 +1033,13 @@ nla_put_failure: /** * batadv_netlink_notify_vlan() - send vlan attributes to listener - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @vlan: vlan which was modified * * Return: 0 on success, < 0 on error */ static int batadv_netlink_notify_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan) + struct batadv_meshif_vlan *vlan) { struct sk_buff *msg; int ret; @@ -1089,7 +1056,7 @@ static int batadv_netlink_notify_vlan(struct batadv_priv *bat_priv, } genlmsg_multicast_netns(&batadv_netlink_family, - dev_net(bat_priv->soft_iface), msg, 0, + dev_net(bat_priv->mesh_iface), msg, 0, BATADV_NL_MCGRP_CONFIG, GFP_KERNEL); return 0; @@ -1104,7 +1071,7 @@ static int batadv_netlink_notify_vlan(struct batadv_priv *bat_priv, */ static int batadv_netlink_get_vlan(struct sk_buff *skb, struct genl_info *info) { - struct batadv_softif_vlan *vlan = info->user_ptr[1]; + struct batadv_meshif_vlan *vlan = info->user_ptr[1]; struct batadv_priv *bat_priv = info->user_ptr[0]; struct sk_buff *msg; int ret; @@ -1134,7 +1101,7 @@ static int batadv_netlink_get_vlan(struct sk_buff *skb, struct genl_info *info) */ static int batadv_netlink_set_vlan(struct sk_buff *skb, struct genl_info *info) { - struct batadv_softif_vlan *vlan = info->user_ptr[1]; + struct batadv_meshif_vlan *vlan = info->user_ptr[1]; struct batadv_priv *bat_priv = info->user_ptr[0]; struct nlattr *attr; @@ -1150,17 +1117,44 @@ static int batadv_netlink_set_vlan(struct sk_buff *skb, struct genl_info *info) } /** - * batadv_get_softif_from_info() - Retrieve soft interface from genl attributes + * batadv_netlink_get_meshif_from_ifindex() - Get mesh-iface from ifindex + * @net: the applicable net namespace + * @ifindex: index of the mesh interface + * + * Return: Pointer to mesh interface (with increased refcnt) on success, error + * pointer on error + */ +static struct net_device * +batadv_netlink_get_meshif_from_ifindex(struct net *net, int ifindex) +{ + struct net_device *mesh_iface; + + mesh_iface = dev_get_by_index(net, ifindex); + if (!mesh_iface) + return ERR_PTR(-ENODEV); + + if (!batadv_meshif_is_valid(mesh_iface)) + goto err_put_meshif; + + return mesh_iface; + +err_put_meshif: + dev_put(mesh_iface); + + return ERR_PTR(-EINVAL); +} + +/** + * batadv_netlink_get_meshif_from_info() - Get mesh-iface from genl attributes * @net: the applicable net namespace * @info: receiver information * - * Return: Pointer to soft interface (with increased refcnt) on success, error + * Return: Pointer to mesh interface (with increased refcnt) on success, error * pointer on error */ static struct net_device * -batadv_get_softif_from_info(struct net *net, struct genl_info *info) +batadv_netlink_get_meshif_from_info(struct net *net, struct genl_info *info) { - struct net_device *soft_iface; int ifindex; if (!info->attrs[BATADV_ATTR_MESH_IFINDEX]) @@ -1168,44 +1162,44 @@ batadv_get_softif_from_info(struct net *net, struct genl_info *info) ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]); - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface) - return ERR_PTR(-ENODEV); - - if (!batadv_softif_is_valid(soft_iface)) - goto err_put_softif; - - return soft_iface; + return batadv_netlink_get_meshif_from_ifindex(net, ifindex); +} -err_put_softif: - dev_put(soft_iface); +/** + * batadv_netlink_get_meshif() - Retrieve mesh interface from netlink callback + * @cb: callback structure containing arguments + * + * Return: Pointer to mesh interface (with increased refcnt) on success, error + * pointer on error + */ +struct net_device *batadv_netlink_get_meshif(struct netlink_callback *cb) +{ + int ifindex = batadv_netlink_get_ifindex(cb->nlh, + BATADV_ATTR_MESH_IFINDEX); + if (!ifindex) + return ERR_PTR(-ENONET); - return ERR_PTR(-EINVAL); + return batadv_netlink_get_meshif_from_ifindex(sock_net(cb->skb->sk), + ifindex); } /** - * batadv_get_hardif_from_info() - Retrieve hardif from genl attributes - * @bat_priv: the bat priv with all the soft interface information + * batadv_netlink_get_hardif_from_ifindex() - Get hard-iface from ifindex + * @bat_priv: the bat priv with all the mesh interface information * @net: the applicable net namespace - * @info: receiver information + * @ifindex: index of the hard interface * * Return: Pointer to hard interface (with increased refcnt) on success, error * pointer on error */ static struct batadv_hard_iface * -batadv_get_hardif_from_info(struct batadv_priv *bat_priv, struct net *net, - struct genl_info *info) +batadv_netlink_get_hardif_from_ifindex(struct batadv_priv *bat_priv, + struct net *net, int ifindex) { struct batadv_hard_iface *hard_iface; struct net_device *hard_dev; - unsigned int hardif_index; - - if (!info->attrs[BATADV_ATTR_HARD_IFINDEX]) - return ERR_PTR(-EINVAL); - - hardif_index = nla_get_u32(info->attrs[BATADV_ATTR_HARD_IFINDEX]); - hard_dev = dev_get_by_index(net, hardif_index); + hard_dev = dev_get_by_index(net, ifindex); if (!hard_dev) return ERR_PTR(-ENODEV); @@ -1213,7 +1207,7 @@ batadv_get_hardif_from_info(struct batadv_priv *bat_priv, struct net *net, if (!hard_iface) goto err_put_harddev; - if (hard_iface->soft_iface != bat_priv->soft_iface) + if (hard_iface->mesh_iface != bat_priv->mesh_iface) goto err_put_hardif; /* hard_dev is referenced by hard_iface and not needed here */ @@ -1230,19 +1224,64 @@ err_put_harddev: } /** + * batadv_netlink_get_hardif_from_info() - Get hard-iface from genl attributes + * @bat_priv: the bat priv with all the mesh interface information + * @net: the applicable net namespace + * @info: receiver information + * + * Return: Pointer to hard interface (with increased refcnt) on success, error + * pointer on error + */ +static struct batadv_hard_iface * +batadv_netlink_get_hardif_from_info(struct batadv_priv *bat_priv, + struct net *net, struct genl_info *info) +{ + int ifindex; + + if (!info->attrs[BATADV_ATTR_HARD_IFINDEX]) + return ERR_PTR(-EINVAL); + + ifindex = nla_get_u32(info->attrs[BATADV_ATTR_HARD_IFINDEX]); + + return batadv_netlink_get_hardif_from_ifindex(bat_priv, net, ifindex); +} + +/** + * batadv_netlink_get_hardif() - Retrieve hard interface from netlink callback + * @bat_priv: the bat priv with all the mesh interface information + * @cb: callback structure containing arguments + * + * Return: Pointer to hard interface (with increased refcnt) on success, error + * pointer on error + */ +struct batadv_hard_iface * +batadv_netlink_get_hardif(struct batadv_priv *bat_priv, + struct netlink_callback *cb) +{ + int ifindex = batadv_netlink_get_ifindex(cb->nlh, + BATADV_ATTR_HARD_IFINDEX); + if (!ifindex) + return ERR_PTR(-ENONET); + + return batadv_netlink_get_hardif_from_ifindex(bat_priv, + sock_net(cb->skb->sk), + ifindex); +} + +/** * batadv_get_vlan_from_info() - Retrieve vlan from genl attributes - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @net: the applicable net namespace * @info: receiver information * * Return: Pointer to vlan on success (with increased refcnt), error pointer * on error */ -static struct batadv_softif_vlan * +static struct batadv_meshif_vlan * batadv_get_vlan_from_info(struct batadv_priv *bat_priv, struct net *net, struct genl_info *info) { - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; u16 vid; if (!info->attrs[BATADV_ATTR_VLANID]) @@ -1250,7 +1289,7 @@ batadv_get_vlan_from_info(struct batadv_priv *bat_priv, struct net *net, vid = nla_get_u16(info->attrs[BATADV_ATTR_VLANID]); - vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); + vlan = batadv_meshif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); if (!vlan) return ERR_PTR(-ENOENT); @@ -1272,8 +1311,8 @@ static int batadv_pre_doit(const struct genl_split_ops *ops, struct net *net = genl_info_net(info); struct batadv_hard_iface *hard_iface; struct batadv_priv *bat_priv = NULL; - struct batadv_softif_vlan *vlan; - struct net_device *soft_iface; + struct batadv_meshif_vlan *vlan; + struct net_device *mesh_iface; u8 user_ptr1_flags; u8 mesh_dep_flags; int ret; @@ -1288,19 +1327,20 @@ static int batadv_pre_doit(const struct genl_split_ops *ops, return -EINVAL; if (ops->internal_flags & BATADV_FLAG_NEED_MESH) { - soft_iface = batadv_get_softif_from_info(net, info); - if (IS_ERR(soft_iface)) - return PTR_ERR(soft_iface); + mesh_iface = batadv_netlink_get_meshif_from_info(net, info); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); info->user_ptr[0] = bat_priv; } if (ops->internal_flags & BATADV_FLAG_NEED_HARDIF) { - hard_iface = batadv_get_hardif_from_info(bat_priv, net, info); + hard_iface = batadv_netlink_get_hardif_from_info(bat_priv, net, + info); if (IS_ERR(hard_iface)) { ret = PTR_ERR(hard_iface); - goto err_put_softif; + goto err_put_meshif; } info->user_ptr[1] = hard_iface; @@ -1310,7 +1350,7 @@ static int batadv_pre_doit(const struct genl_split_ops *ops, vlan = batadv_get_vlan_from_info(bat_priv, net, info); if (IS_ERR(vlan)) { ret = PTR_ERR(vlan); - goto err_put_softif; + goto err_put_meshif; } info->user_ptr[1] = vlan; @@ -1318,9 +1358,9 @@ static int batadv_pre_doit(const struct genl_split_ops *ops, return 0; -err_put_softif: +err_put_meshif: if (bat_priv) - dev_put(bat_priv->soft_iface); + dev_put(bat_priv->mesh_iface); return ret; } @@ -1336,7 +1376,7 @@ static void batadv_post_doit(const struct genl_split_ops *ops, struct genl_info *info) { struct batadv_hard_iface *hard_iface; - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; struct batadv_priv *bat_priv; if (ops->internal_flags & BATADV_FLAG_NEED_HARDIF && @@ -1348,12 +1388,12 @@ static void batadv_post_doit(const struct genl_split_ops *ops, if (ops->internal_flags & BATADV_FLAG_NEED_VLAN && info->user_ptr[1]) { vlan = info->user_ptr[1]; - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); } if (ops->internal_flags & BATADV_FLAG_NEED_MESH && info->user_ptr[0]) { bat_priv = info->user_ptr[0]; - dev_put(bat_priv->soft_iface); + dev_put(bat_priv->mesh_iface); } } @@ -1390,7 +1430,7 @@ static const struct genl_small_ops batadv_netlink_ops[] = { .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, /* can be retrieved by unprivileged users */ .dumpit = batadv_netlink_dump_hardif, - .doit = batadv_netlink_get_hardif, + .doit = batadv_netlink_cmd_get_hardif, .internal_flags = BATADV_FLAG_NEED_MESH | BATADV_FLAG_NEED_HARDIF, }, @@ -1507,7 +1547,7 @@ void __init batadv_netlink_register(void) ret = genl_register_family(&batadv_netlink_family); if (ret) - pr_warn("unable to register netlink family"); + pr_warn("unable to register netlink family\n"); } /** diff --git a/net/batman-adv/netlink.h b/net/batman-adv/netlink.h index 876d2806a67d..4eae9e5ff135 100644 --- a/net/batman-adv/netlink.h +++ b/net/batman-adv/netlink.h @@ -11,11 +11,13 @@ #include <linux/netlink.h> #include <linux/types.h> -#include <net/genetlink.h> void batadv_netlink_register(void); void batadv_netlink_unregister(void); -int batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype); +struct net_device *batadv_netlink_get_meshif(struct netlink_callback *cb); +struct batadv_hard_iface * +batadv_netlink_get_hardif(struct batadv_priv *bat_priv, + struct netlink_callback *cb); int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst, u8 result, u32 test_time, u64 total_bytes, diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c deleted file mode 100644 index 71ebd0284f95..000000000000 --- a/net/batman-adv/network-coding.c +++ /dev/null @@ -1,1873 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) B.A.T.M.A.N. contributors: - * - * Martin Hundebøll, Jeppe Ledet-Pedersen - */ - -#include "network-coding.h" -#include "main.h" - -#include <linux/atomic.h> -#include <linux/bitops.h> -#include <linux/byteorder/generic.h> -#include <linux/compiler.h> -#include <linux/container_of.h> -#include <linux/errno.h> -#include <linux/etherdevice.h> -#include <linux/gfp.h> -#include <linux/if_ether.h> -#include <linux/if_packet.h> -#include <linux/init.h> -#include <linux/jhash.h> -#include <linux/jiffies.h> -#include <linux/kref.h> -#include <linux/list.h> -#include <linux/lockdep.h> -#include <linux/net.h> -#include <linux/netdevice.h> -#include <linux/printk.h> -#include <linux/random.h> -#include <linux/rculist.h> -#include <linux/rcupdate.h> -#include <linux/skbuff.h> -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/stddef.h> -#include <linux/string.h> -#include <linux/workqueue.h> -#include <uapi/linux/batadv_packet.h> - -#include "hash.h" -#include "log.h" -#include "originator.h" -#include "routing.h" -#include "send.h" -#include "tvlv.h" - -static struct lock_class_key batadv_nc_coding_hash_lock_class_key; -static struct lock_class_key batadv_nc_decoding_hash_lock_class_key; - -static void batadv_nc_worker(struct work_struct *work); -static int batadv_nc_recv_coded_packet(struct sk_buff *skb, - struct batadv_hard_iface *recv_if); - -/** - * batadv_nc_init() - one-time initialization for network coding - * - * Return: 0 on success or negative error number in case of failure - */ -int __init batadv_nc_init(void) -{ - /* Register our packet type */ - return batadv_recv_handler_register(BATADV_CODED, - batadv_nc_recv_coded_packet); -} - -/** - * batadv_nc_start_timer() - initialise the nc periodic worker - * @bat_priv: the bat priv with all the soft interface information - */ -static void batadv_nc_start_timer(struct batadv_priv *bat_priv) -{ - queue_delayed_work(batadv_event_workqueue, &bat_priv->nc.work, - msecs_to_jiffies(10)); -} - -/** - * batadv_nc_tvlv_container_update() - update the network coding tvlv container - * after network coding setting change - * @bat_priv: the bat priv with all the soft interface information - */ -static void batadv_nc_tvlv_container_update(struct batadv_priv *bat_priv) -{ - char nc_mode; - - nc_mode = atomic_read(&bat_priv->network_coding); - - switch (nc_mode) { - case 0: - batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_NC, 1); - break; - case 1: - batadv_tvlv_container_register(bat_priv, BATADV_TVLV_NC, 1, - NULL, 0); - break; - } -} - -/** - * batadv_nc_status_update() - update the network coding tvlv container after - * network coding setting change - * @net_dev: the soft interface net device - */ -void batadv_nc_status_update(struct net_device *net_dev) -{ - struct batadv_priv *bat_priv = netdev_priv(net_dev); - - batadv_nc_tvlv_container_update(bat_priv); -} - -/** - * batadv_nc_tvlv_ogm_handler_v1() - process incoming nc tvlv container - * @bat_priv: the bat priv with all the soft interface information - * @orig: the orig_node of the ogm - * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) - * @tvlv_value: tvlv buffer containing the gateway data - * @tvlv_value_len: tvlv buffer length - */ -static void batadv_nc_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig, - u8 flags, - void *tvlv_value, u16 tvlv_value_len) -{ - if (flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND) - clear_bit(BATADV_ORIG_CAPA_HAS_NC, &orig->capabilities); - else - set_bit(BATADV_ORIG_CAPA_HAS_NC, &orig->capabilities); -} - -/** - * batadv_nc_mesh_init() - initialise coding hash table and start housekeeping - * @bat_priv: the bat priv with all the soft interface information - * - * Return: 0 on success or negative error number in case of failure - */ -int batadv_nc_mesh_init(struct batadv_priv *bat_priv) -{ - bat_priv->nc.timestamp_fwd_flush = jiffies; - bat_priv->nc.timestamp_sniffed_purge = jiffies; - - if (bat_priv->nc.coding_hash || bat_priv->nc.decoding_hash) - return 0; - - bat_priv->nc.coding_hash = batadv_hash_new(128); - if (!bat_priv->nc.coding_hash) - goto err; - - batadv_hash_set_lock_class(bat_priv->nc.coding_hash, - &batadv_nc_coding_hash_lock_class_key); - - bat_priv->nc.decoding_hash = batadv_hash_new(128); - if (!bat_priv->nc.decoding_hash) { - batadv_hash_destroy(bat_priv->nc.coding_hash); - goto err; - } - - batadv_hash_set_lock_class(bat_priv->nc.decoding_hash, - &batadv_nc_decoding_hash_lock_class_key); - - INIT_DELAYED_WORK(&bat_priv->nc.work, batadv_nc_worker); - batadv_nc_start_timer(bat_priv); - - batadv_tvlv_handler_register(bat_priv, batadv_nc_tvlv_ogm_handler_v1, - NULL, NULL, BATADV_TVLV_NC, 1, - BATADV_TVLV_HANDLER_OGM_CIFNOTFND); - batadv_nc_tvlv_container_update(bat_priv); - return 0; - -err: - return -ENOMEM; -} - -/** - * batadv_nc_init_bat_priv() - initialise the nc specific bat_priv variables - * @bat_priv: the bat priv with all the soft interface information - */ -void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv) -{ - atomic_set(&bat_priv->network_coding, 0); - bat_priv->nc.min_tq = 200; - bat_priv->nc.max_fwd_delay = 10; - bat_priv->nc.max_buffer_time = 200; -} - -/** - * batadv_nc_init_orig() - initialise the nc fields of an orig_node - * @orig_node: the orig_node which is going to be initialised - */ -void batadv_nc_init_orig(struct batadv_orig_node *orig_node) -{ - INIT_LIST_HEAD(&orig_node->in_coding_list); - INIT_LIST_HEAD(&orig_node->out_coding_list); - spin_lock_init(&orig_node->in_coding_list_lock); - spin_lock_init(&orig_node->out_coding_list_lock); -} - -/** - * batadv_nc_node_release() - release nc_node from lists and queue for free - * after rcu grace period - * @ref: kref pointer of the nc_node - */ -static void batadv_nc_node_release(struct kref *ref) -{ - struct batadv_nc_node *nc_node; - - nc_node = container_of(ref, struct batadv_nc_node, refcount); - - batadv_orig_node_put(nc_node->orig_node); - kfree_rcu(nc_node, rcu); -} - -/** - * batadv_nc_node_put() - decrement the nc_node refcounter and possibly - * release it - * @nc_node: nc_node to be free'd - */ -static void batadv_nc_node_put(struct batadv_nc_node *nc_node) -{ - if (!nc_node) - return; - - kref_put(&nc_node->refcount, batadv_nc_node_release); -} - -/** - * batadv_nc_path_release() - release nc_path from lists and queue for free - * after rcu grace period - * @ref: kref pointer of the nc_path - */ -static void batadv_nc_path_release(struct kref *ref) -{ - struct batadv_nc_path *nc_path; - - nc_path = container_of(ref, struct batadv_nc_path, refcount); - - kfree_rcu(nc_path, rcu); -} - -/** - * batadv_nc_path_put() - decrement the nc_path refcounter and possibly - * release it - * @nc_path: nc_path to be free'd - */ -static void batadv_nc_path_put(struct batadv_nc_path *nc_path) -{ - if (!nc_path) - return; - - kref_put(&nc_path->refcount, batadv_nc_path_release); -} - -/** - * batadv_nc_packet_free() - frees nc packet - * @nc_packet: the nc packet to free - * @dropped: whether the packet is freed because is dropped - */ -static void batadv_nc_packet_free(struct batadv_nc_packet *nc_packet, - bool dropped) -{ - if (dropped) - kfree_skb(nc_packet->skb); - else - consume_skb(nc_packet->skb); - - batadv_nc_path_put(nc_packet->nc_path); - kfree(nc_packet); -} - -/** - * batadv_nc_to_purge_nc_node() - checks whether an nc node has to be purged - * @bat_priv: the bat priv with all the soft interface information - * @nc_node: the nc node to check - * - * Return: true if the entry has to be purged now, false otherwise - */ -static bool batadv_nc_to_purge_nc_node(struct batadv_priv *bat_priv, - struct batadv_nc_node *nc_node) -{ - if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) - return true; - - return batadv_has_timed_out(nc_node->last_seen, BATADV_NC_NODE_TIMEOUT); -} - -/** - * batadv_nc_to_purge_nc_path_coding() - checks whether an nc path has timed out - * @bat_priv: the bat priv with all the soft interface information - * @nc_path: the nc path to check - * - * Return: true if the entry has to be purged now, false otherwise - */ -static bool batadv_nc_to_purge_nc_path_coding(struct batadv_priv *bat_priv, - struct batadv_nc_path *nc_path) -{ - if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) - return true; - - /* purge the path when no packets has been added for 10 times the - * max_fwd_delay time - */ - return batadv_has_timed_out(nc_path->last_valid, - bat_priv->nc.max_fwd_delay * 10); -} - -/** - * batadv_nc_to_purge_nc_path_decoding() - checks whether an nc path has timed - * out - * @bat_priv: the bat priv with all the soft interface information - * @nc_path: the nc path to check - * - * Return: true if the entry has to be purged now, false otherwise - */ -static bool batadv_nc_to_purge_nc_path_decoding(struct batadv_priv *bat_priv, - struct batadv_nc_path *nc_path) -{ - if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) - return true; - - /* purge the path when no packets has been added for 10 times the - * max_buffer time - */ - return batadv_has_timed_out(nc_path->last_valid, - bat_priv->nc.max_buffer_time * 10); -} - -/** - * batadv_nc_purge_orig_nc_nodes() - go through list of nc nodes and purge stale - * entries - * @bat_priv: the bat priv with all the soft interface information - * @list: list of nc nodes - * @lock: nc node list lock - * @to_purge: function in charge to decide whether an entry has to be purged or - * not. This function takes the nc node as argument and has to return - * a boolean value: true if the entry has to be deleted, false - * otherwise - */ -static void -batadv_nc_purge_orig_nc_nodes(struct batadv_priv *bat_priv, - struct list_head *list, - spinlock_t *lock, - bool (*to_purge)(struct batadv_priv *, - struct batadv_nc_node *)) -{ - struct batadv_nc_node *nc_node, *nc_node_tmp; - - /* For each nc_node in list */ - spin_lock_bh(lock); - list_for_each_entry_safe(nc_node, nc_node_tmp, list, list) { - /* if an helper function has been passed as parameter, - * ask it if the entry has to be purged or not - */ - if (to_purge && !to_purge(bat_priv, nc_node)) - continue; - - batadv_dbg(BATADV_DBG_NC, bat_priv, - "Removing nc_node %pM -> %pM\n", - nc_node->addr, nc_node->orig_node->orig); - list_del_rcu(&nc_node->list); - batadv_nc_node_put(nc_node); - } - spin_unlock_bh(lock); -} - -/** - * batadv_nc_purge_orig() - purges all nc node data attached of the given - * originator - * @bat_priv: the bat priv with all the soft interface information - * @orig_node: orig_node with the nc node entries to be purged - * @to_purge: function in charge to decide whether an entry has to be purged or - * not. This function takes the nc node as argument and has to return - * a boolean value: true is the entry has to be deleted, false - * otherwise - */ -void batadv_nc_purge_orig(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - bool (*to_purge)(struct batadv_priv *, - struct batadv_nc_node *)) -{ - /* Check ingoing nc_node's of this orig_node */ - batadv_nc_purge_orig_nc_nodes(bat_priv, &orig_node->in_coding_list, - &orig_node->in_coding_list_lock, - to_purge); - - /* Check outgoing nc_node's of this orig_node */ - batadv_nc_purge_orig_nc_nodes(bat_priv, &orig_node->out_coding_list, - &orig_node->out_coding_list_lock, - to_purge); -} - -/** - * batadv_nc_purge_orig_hash() - traverse entire originator hash to check if - * they have timed out nc nodes - * @bat_priv: the bat priv with all the soft interface information - */ -static void batadv_nc_purge_orig_hash(struct batadv_priv *bat_priv) -{ - struct batadv_hashtable *hash = bat_priv->orig_hash; - struct hlist_head *head; - struct batadv_orig_node *orig_node; - u32 i; - - if (!hash) - return; - - /* For each orig_node */ - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) - batadv_nc_purge_orig(bat_priv, orig_node, - batadv_nc_to_purge_nc_node); - rcu_read_unlock(); - } -} - -/** - * batadv_nc_purge_paths() - traverse all nc paths part of the hash and remove - * unused ones - * @bat_priv: the bat priv with all the soft interface information - * @hash: hash table containing the nc paths to check - * @to_purge: function in charge to decide whether an entry has to be purged or - * not. This function takes the nc node as argument and has to return - * a boolean value: true is the entry has to be deleted, false - * otherwise - */ -static void batadv_nc_purge_paths(struct batadv_priv *bat_priv, - struct batadv_hashtable *hash, - bool (*to_purge)(struct batadv_priv *, - struct batadv_nc_path *)) -{ - struct hlist_head *head; - struct hlist_node *node_tmp; - struct batadv_nc_path *nc_path; - spinlock_t *lock; /* Protects lists in hash */ - u32 i; - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - lock = &hash->list_locks[i]; - - /* For each nc_path in this bin */ - spin_lock_bh(lock); - hlist_for_each_entry_safe(nc_path, node_tmp, head, hash_entry) { - /* if an helper function has been passed as parameter, - * ask it if the entry has to be purged or not - */ - if (to_purge && !to_purge(bat_priv, nc_path)) - continue; - - /* purging an non-empty nc_path should never happen, but - * is observed under high CPU load. Delay the purging - * until next iteration to allow the packet_list to be - * emptied first. - */ - if (!unlikely(list_empty(&nc_path->packet_list))) { - net_ratelimited_function(printk, - KERN_WARNING - "Skipping free of non-empty nc_path (%pM -> %pM)!\n", - nc_path->prev_hop, - nc_path->next_hop); - continue; - } - - /* nc_path is unused, so remove it */ - batadv_dbg(BATADV_DBG_NC, bat_priv, - "Remove nc_path %pM -> %pM\n", - nc_path->prev_hop, nc_path->next_hop); - hlist_del_rcu(&nc_path->hash_entry); - batadv_nc_path_put(nc_path); - } - spin_unlock_bh(lock); - } -} - -/** - * batadv_nc_hash_key_gen() - computes the nc_path hash key - * @key: buffer to hold the final hash key - * @src: source ethernet mac address going into the hash key - * @dst: destination ethernet mac address going into the hash key - */ -static void batadv_nc_hash_key_gen(struct batadv_nc_path *key, const char *src, - const char *dst) -{ - memcpy(key->prev_hop, src, sizeof(key->prev_hop)); - memcpy(key->next_hop, dst, sizeof(key->next_hop)); -} - -/** - * batadv_nc_hash_choose() - compute the hash value for an nc path - * @data: data to hash - * @size: size of the hash table - * - * Return: the selected index in the hash table for the given data. - */ -static u32 batadv_nc_hash_choose(const void *data, u32 size) -{ - const struct batadv_nc_path *nc_path = data; - u32 hash = 0; - - hash = jhash(&nc_path->prev_hop, sizeof(nc_path->prev_hop), hash); - hash = jhash(&nc_path->next_hop, sizeof(nc_path->next_hop), hash); - - return hash % size; -} - -/** - * batadv_nc_hash_compare() - comparing function used in the network coding hash - * tables - * @node: node in the local table - * @data2: second object to compare the node to - * - * Return: true if the two entry are the same, false otherwise - */ -static bool batadv_nc_hash_compare(const struct hlist_node *node, - const void *data2) -{ - const struct batadv_nc_path *nc_path1, *nc_path2; - - nc_path1 = container_of(node, struct batadv_nc_path, hash_entry); - nc_path2 = data2; - - /* Return 1 if the two keys are identical */ - if (!batadv_compare_eth(nc_path1->prev_hop, nc_path2->prev_hop)) - return false; - - if (!batadv_compare_eth(nc_path1->next_hop, nc_path2->next_hop)) - return false; - - return true; -} - -/** - * batadv_nc_hash_find() - search for an existing nc path and return it - * @hash: hash table containing the nc path - * @data: search key - * - * Return: the nc_path if found, NULL otherwise. - */ -static struct batadv_nc_path * -batadv_nc_hash_find(struct batadv_hashtable *hash, - void *data) -{ - struct hlist_head *head; - struct batadv_nc_path *nc_path, *nc_path_tmp = NULL; - int index; - - if (!hash) - return NULL; - - index = batadv_nc_hash_choose(data, hash->size); - head = &hash->table[index]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(nc_path, head, hash_entry) { - if (!batadv_nc_hash_compare(&nc_path->hash_entry, data)) - continue; - - if (!kref_get_unless_zero(&nc_path->refcount)) - continue; - - nc_path_tmp = nc_path; - break; - } - rcu_read_unlock(); - - return nc_path_tmp; -} - -/** - * batadv_nc_send_packet() - send non-coded packet and free nc_packet struct - * @nc_packet: the nc packet to send - */ -static void batadv_nc_send_packet(struct batadv_nc_packet *nc_packet) -{ - batadv_send_unicast_skb(nc_packet->skb, nc_packet->neigh_node); - nc_packet->skb = NULL; - batadv_nc_packet_free(nc_packet, false); -} - -/** - * batadv_nc_sniffed_purge() - Checks timestamp of given sniffed nc_packet. - * @bat_priv: the bat priv with all the soft interface information - * @nc_path: the nc path the packet belongs to - * @nc_packet: the nc packet to be checked - * - * Checks whether the given sniffed (overheard) nc_packet has hit its buffering - * timeout. If so, the packet is no longer kept and the entry deleted from the - * queue. Has to be called with the appropriate locks. - * - * Return: false as soon as the entry in the fifo queue has not been timed out - * yet and true otherwise. - */ -static bool batadv_nc_sniffed_purge(struct batadv_priv *bat_priv, - struct batadv_nc_path *nc_path, - struct batadv_nc_packet *nc_packet) -{ - unsigned long timeout = bat_priv->nc.max_buffer_time; - bool res = false; - - lockdep_assert_held(&nc_path->packet_list_lock); - - /* Packets are added to tail, so the remaining packets did not time - * out and we can stop processing the current queue - */ - if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE && - !batadv_has_timed_out(nc_packet->timestamp, timeout)) - goto out; - - /* purge nc packet */ - list_del(&nc_packet->list); - batadv_nc_packet_free(nc_packet, true); - - res = true; - -out: - return res; -} - -/** - * batadv_nc_fwd_flush() - Checks the timestamp of the given nc packet. - * @bat_priv: the bat priv with all the soft interface information - * @nc_path: the nc path the packet belongs to - * @nc_packet: the nc packet to be checked - * - * Checks whether the given nc packet has hit its forward timeout. If so, the - * packet is no longer delayed, immediately sent and the entry deleted from the - * queue. Has to be called with the appropriate locks. - * - * Return: false as soon as the entry in the fifo queue has not been timed out - * yet and true otherwise. - */ -static bool batadv_nc_fwd_flush(struct batadv_priv *bat_priv, - struct batadv_nc_path *nc_path, - struct batadv_nc_packet *nc_packet) -{ - unsigned long timeout = bat_priv->nc.max_fwd_delay; - - lockdep_assert_held(&nc_path->packet_list_lock); - - /* Packets are added to tail, so the remaining packets did not time - * out and we can stop processing the current queue - */ - if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE && - !batadv_has_timed_out(nc_packet->timestamp, timeout)) - return false; - - /* Send packet */ - batadv_inc_counter(bat_priv, BATADV_CNT_FORWARD); - batadv_add_counter(bat_priv, BATADV_CNT_FORWARD_BYTES, - nc_packet->skb->len + ETH_HLEN); - list_del(&nc_packet->list); - batadv_nc_send_packet(nc_packet); - - return true; -} - -/** - * batadv_nc_process_nc_paths() - traverse given nc packet pool and free timed - * out nc packets - * @bat_priv: the bat priv with all the soft interface information - * @hash: to be processed hash table - * @process_fn: Function called to process given nc packet. Should return true - * to encourage this function to proceed with the next packet. - * Otherwise the rest of the current queue is skipped. - */ -static void -batadv_nc_process_nc_paths(struct batadv_priv *bat_priv, - struct batadv_hashtable *hash, - bool (*process_fn)(struct batadv_priv *, - struct batadv_nc_path *, - struct batadv_nc_packet *)) -{ - struct hlist_head *head; - struct batadv_nc_packet *nc_packet, *nc_packet_tmp; - struct batadv_nc_path *nc_path; - bool ret; - int i; - - if (!hash) - return; - - /* Loop hash table bins */ - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - /* Loop coding paths */ - rcu_read_lock(); - hlist_for_each_entry_rcu(nc_path, head, hash_entry) { - /* Loop packets */ - spin_lock_bh(&nc_path->packet_list_lock); - list_for_each_entry_safe(nc_packet, nc_packet_tmp, - &nc_path->packet_list, list) { - ret = process_fn(bat_priv, nc_path, nc_packet); - if (!ret) - break; - } - spin_unlock_bh(&nc_path->packet_list_lock); - } - rcu_read_unlock(); - } -} - -/** - * batadv_nc_worker() - periodic task for housekeeping related to network - * coding - * @work: kernel work struct - */ -static void batadv_nc_worker(struct work_struct *work) -{ - struct delayed_work *delayed_work; - struct batadv_priv_nc *priv_nc; - struct batadv_priv *bat_priv; - unsigned long timeout; - - delayed_work = to_delayed_work(work); - priv_nc = container_of(delayed_work, struct batadv_priv_nc, work); - bat_priv = container_of(priv_nc, struct batadv_priv, nc); - - batadv_nc_purge_orig_hash(bat_priv); - batadv_nc_purge_paths(bat_priv, bat_priv->nc.coding_hash, - batadv_nc_to_purge_nc_path_coding); - batadv_nc_purge_paths(bat_priv, bat_priv->nc.decoding_hash, - batadv_nc_to_purge_nc_path_decoding); - - timeout = bat_priv->nc.max_fwd_delay; - - if (batadv_has_timed_out(bat_priv->nc.timestamp_fwd_flush, timeout)) { - batadv_nc_process_nc_paths(bat_priv, bat_priv->nc.coding_hash, - batadv_nc_fwd_flush); - bat_priv->nc.timestamp_fwd_flush = jiffies; - } - - if (batadv_has_timed_out(bat_priv->nc.timestamp_sniffed_purge, - bat_priv->nc.max_buffer_time)) { - batadv_nc_process_nc_paths(bat_priv, bat_priv->nc.decoding_hash, - batadv_nc_sniffed_purge); - bat_priv->nc.timestamp_sniffed_purge = jiffies; - } - - /* Schedule a new check */ - batadv_nc_start_timer(bat_priv); -} - -/** - * batadv_can_nc_with_orig() - checks whether the given orig node is suitable - * for coding or not - * @bat_priv: the bat priv with all the soft interface information - * @orig_node: neighboring orig node which may be used as nc candidate - * @ogm_packet: incoming ogm packet also used for the checks - * - * Return: true if: - * 1) The OGM must have the most recent sequence number. - * 2) The TTL must be decremented by one and only one. - * 3) The OGM must be received from the first hop from orig_node. - * 4) The TQ value of the OGM must be above bat_priv->nc.min_tq. - */ -static bool batadv_can_nc_with_orig(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - struct batadv_ogm_packet *ogm_packet) -{ - struct batadv_orig_ifinfo *orig_ifinfo; - u32 last_real_seqno; - u8 last_ttl; - - orig_ifinfo = batadv_orig_ifinfo_get(orig_node, BATADV_IF_DEFAULT); - if (!orig_ifinfo) - return false; - - last_ttl = orig_ifinfo->last_ttl; - last_real_seqno = orig_ifinfo->last_real_seqno; - batadv_orig_ifinfo_put(orig_ifinfo); - - if (last_real_seqno != ntohl(ogm_packet->seqno)) - return false; - if (last_ttl != ogm_packet->ttl + 1) - return false; - if (!batadv_compare_eth(ogm_packet->orig, ogm_packet->prev_sender)) - return false; - if (ogm_packet->tq < bat_priv->nc.min_tq) - return false; - - return true; -} - -/** - * batadv_nc_find_nc_node() - search for an existing nc node and return it - * @orig_node: orig node originating the ogm packet - * @orig_neigh_node: neighboring orig node from which we received the ogm packet - * (can be equal to orig_node) - * @in_coding: traverse incoming or outgoing network coding list - * - * Return: the nc_node if found, NULL otherwise. - */ -static struct batadv_nc_node * -batadv_nc_find_nc_node(struct batadv_orig_node *orig_node, - struct batadv_orig_node *orig_neigh_node, - bool in_coding) -{ - struct batadv_nc_node *nc_node, *nc_node_out = NULL; - struct list_head *list; - - if (in_coding) - list = &orig_neigh_node->in_coding_list; - else - list = &orig_neigh_node->out_coding_list; - - /* Traverse list of nc_nodes to orig_node */ - rcu_read_lock(); - list_for_each_entry_rcu(nc_node, list, list) { - if (!batadv_compare_eth(nc_node->addr, orig_node->orig)) - continue; - - if (!kref_get_unless_zero(&nc_node->refcount)) - continue; - - /* Found a match */ - nc_node_out = nc_node; - break; - } - rcu_read_unlock(); - - return nc_node_out; -} - -/** - * batadv_nc_get_nc_node() - retrieves an nc node or creates the entry if it was - * not found - * @bat_priv: the bat priv with all the soft interface information - * @orig_node: orig node originating the ogm packet - * @orig_neigh_node: neighboring orig node from which we received the ogm packet - * (can be equal to orig_node) - * @in_coding: traverse incoming or outgoing network coding list - * - * Return: the nc_node if found or created, NULL in case of an error. - */ -static struct batadv_nc_node * -batadv_nc_get_nc_node(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - struct batadv_orig_node *orig_neigh_node, - bool in_coding) -{ - struct batadv_nc_node *nc_node; - spinlock_t *lock; /* Used to lock list selected by "int in_coding" */ - struct list_head *list; - - /* Select ingoing or outgoing coding node */ - if (in_coding) { - lock = &orig_neigh_node->in_coding_list_lock; - list = &orig_neigh_node->in_coding_list; - } else { - lock = &orig_neigh_node->out_coding_list_lock; - list = &orig_neigh_node->out_coding_list; - } - - spin_lock_bh(lock); - - /* Check if nc_node is already added */ - nc_node = batadv_nc_find_nc_node(orig_node, orig_neigh_node, in_coding); - - /* Node found */ - if (nc_node) - goto unlock; - - nc_node = kzalloc(sizeof(*nc_node), GFP_ATOMIC); - if (!nc_node) - goto unlock; - - /* Initialize nc_node */ - INIT_LIST_HEAD(&nc_node->list); - kref_init(&nc_node->refcount); - ether_addr_copy(nc_node->addr, orig_node->orig); - kref_get(&orig_neigh_node->refcount); - nc_node->orig_node = orig_neigh_node; - - batadv_dbg(BATADV_DBG_NC, bat_priv, "Adding nc_node %pM -> %pM\n", - nc_node->addr, nc_node->orig_node->orig); - - /* Add nc_node to orig_node */ - kref_get(&nc_node->refcount); - list_add_tail_rcu(&nc_node->list, list); - -unlock: - spin_unlock_bh(lock); - - return nc_node; -} - -/** - * batadv_nc_update_nc_node() - updates stored incoming and outgoing nc node - * structs (best called on incoming OGMs) - * @bat_priv: the bat priv with all the soft interface information - * @orig_node: orig node originating the ogm packet - * @orig_neigh_node: neighboring orig node from which we received the ogm packet - * (can be equal to orig_node) - * @ogm_packet: incoming ogm packet - * @is_single_hop_neigh: orig_node is a single hop neighbor - */ -void batadv_nc_update_nc_node(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - struct batadv_orig_node *orig_neigh_node, - struct batadv_ogm_packet *ogm_packet, - int is_single_hop_neigh) -{ - struct batadv_nc_node *in_nc_node = NULL; - struct batadv_nc_node *out_nc_node = NULL; - - /* Check if network coding is enabled */ - if (!atomic_read(&bat_priv->network_coding)) - goto out; - - /* check if orig node is network coding enabled */ - if (!test_bit(BATADV_ORIG_CAPA_HAS_NC, &orig_node->capabilities)) - goto out; - - /* accept ogms from 'good' neighbors and single hop neighbors */ - if (!batadv_can_nc_with_orig(bat_priv, orig_node, ogm_packet) && - !is_single_hop_neigh) - goto out; - - /* Add orig_node as in_nc_node on hop */ - in_nc_node = batadv_nc_get_nc_node(bat_priv, orig_node, - orig_neigh_node, true); - if (!in_nc_node) - goto out; - - in_nc_node->last_seen = jiffies; - - /* Add hop as out_nc_node on orig_node */ - out_nc_node = batadv_nc_get_nc_node(bat_priv, orig_neigh_node, - orig_node, false); - if (!out_nc_node) - goto out; - - out_nc_node->last_seen = jiffies; - -out: - batadv_nc_node_put(in_nc_node); - batadv_nc_node_put(out_nc_node); -} - -/** - * batadv_nc_get_path() - get existing nc_path or allocate a new one - * @bat_priv: the bat priv with all the soft interface information - * @hash: hash table containing the nc path - * @src: ethernet source address - first half of the nc path search key - * @dst: ethernet destination address - second half of the nc path search key - * - * Return: pointer to nc_path if the path was found or created, returns NULL - * on error. - */ -static struct batadv_nc_path *batadv_nc_get_path(struct batadv_priv *bat_priv, - struct batadv_hashtable *hash, - u8 *src, - u8 *dst) -{ - int hash_added; - struct batadv_nc_path *nc_path, nc_path_key; - - batadv_nc_hash_key_gen(&nc_path_key, src, dst); - - /* Search for existing nc_path */ - nc_path = batadv_nc_hash_find(hash, (void *)&nc_path_key); - - if (nc_path) { - /* Set timestamp to delay removal of nc_path */ - nc_path->last_valid = jiffies; - return nc_path; - } - - /* No existing nc_path was found; create a new */ - nc_path = kzalloc(sizeof(*nc_path), GFP_ATOMIC); - - if (!nc_path) - return NULL; - - /* Initialize nc_path */ - INIT_LIST_HEAD(&nc_path->packet_list); - spin_lock_init(&nc_path->packet_list_lock); - kref_init(&nc_path->refcount); - nc_path->last_valid = jiffies; - ether_addr_copy(nc_path->next_hop, dst); - ether_addr_copy(nc_path->prev_hop, src); - - batadv_dbg(BATADV_DBG_NC, bat_priv, "Adding nc_path %pM -> %pM\n", - nc_path->prev_hop, - nc_path->next_hop); - - /* Add nc_path to hash table */ - kref_get(&nc_path->refcount); - hash_added = batadv_hash_add(hash, batadv_nc_hash_compare, - batadv_nc_hash_choose, &nc_path_key, - &nc_path->hash_entry); - - if (hash_added < 0) { - kfree(nc_path); - return NULL; - } - - return nc_path; -} - -/** - * batadv_nc_random_weight_tq() - scale the receivers TQ-value to avoid unfair - * selection of a receiver with slightly lower TQ than the other - * @tq: to be weighted tq value - * - * Return: scaled tq value - */ -static u8 batadv_nc_random_weight_tq(u8 tq) -{ - /* randomize the estimated packet loss (max TQ - estimated TQ) */ - u8 rand_tq = get_random_u32_below(BATADV_TQ_MAX_VALUE + 1 - tq); - - /* convert to (randomized) estimated tq again */ - return BATADV_TQ_MAX_VALUE - rand_tq; -} - -/** - * batadv_nc_memxor() - XOR destination with source - * @dst: byte array to XOR into - * @src: byte array to XOR from - * @len: length of destination array - */ -static void batadv_nc_memxor(char *dst, const char *src, unsigned int len) -{ - unsigned int i; - - for (i = 0; i < len; ++i) - dst[i] ^= src[i]; -} - -/** - * batadv_nc_code_packets() - code a received unicast_packet with an nc packet - * into a coded_packet and send it - * @bat_priv: the bat priv with all the soft interface information - * @skb: data skb to forward - * @ethhdr: pointer to the ethernet header inside the skb - * @nc_packet: structure containing the packet to the skb can be coded with - * @neigh_node: next hop to forward packet to - * - * Return: true if both packets are consumed, false otherwise. - */ -static bool batadv_nc_code_packets(struct batadv_priv *bat_priv, - struct sk_buff *skb, - struct ethhdr *ethhdr, - struct batadv_nc_packet *nc_packet, - struct batadv_neigh_node *neigh_node) -{ - u8 tq_weighted_neigh, tq_weighted_coding, tq_tmp; - struct sk_buff *skb_dest, *skb_src; - struct batadv_unicast_packet *packet1; - struct batadv_unicast_packet *packet2; - struct batadv_coded_packet *coded_packet; - struct batadv_neigh_node *neigh_tmp, *router_neigh, *first_dest; - struct batadv_neigh_node *router_coding = NULL, *second_dest; - struct batadv_neigh_ifinfo *router_neigh_ifinfo = NULL; - struct batadv_neigh_ifinfo *router_coding_ifinfo = NULL; - u8 *first_source, *second_source; - __be32 packet_id1, packet_id2; - size_t count; - bool res = false; - int coding_len; - int unicast_size = sizeof(*packet1); - int coded_size = sizeof(*coded_packet); - int header_add = coded_size - unicast_size; - - /* TODO: do we need to consider the outgoing interface for - * coded packets? - */ - router_neigh = batadv_orig_router_get(neigh_node->orig_node, - BATADV_IF_DEFAULT); - if (!router_neigh) - goto out; - - router_neigh_ifinfo = batadv_neigh_ifinfo_get(router_neigh, - BATADV_IF_DEFAULT); - if (!router_neigh_ifinfo) - goto out; - - neigh_tmp = nc_packet->neigh_node; - router_coding = batadv_orig_router_get(neigh_tmp->orig_node, - BATADV_IF_DEFAULT); - if (!router_coding) - goto out; - - router_coding_ifinfo = batadv_neigh_ifinfo_get(router_coding, - BATADV_IF_DEFAULT); - if (!router_coding_ifinfo) - goto out; - - tq_tmp = router_neigh_ifinfo->bat_iv.tq_avg; - tq_weighted_neigh = batadv_nc_random_weight_tq(tq_tmp); - tq_tmp = router_coding_ifinfo->bat_iv.tq_avg; - tq_weighted_coding = batadv_nc_random_weight_tq(tq_tmp); - - /* Select one destination for the MAC-header dst-field based on - * weighted TQ-values. - */ - if (tq_weighted_neigh >= tq_weighted_coding) { - /* Destination from nc_packet is selected for MAC-header */ - first_dest = nc_packet->neigh_node; - first_source = nc_packet->nc_path->prev_hop; - second_dest = neigh_node; - second_source = ethhdr->h_source; - packet1 = (struct batadv_unicast_packet *)nc_packet->skb->data; - packet2 = (struct batadv_unicast_packet *)skb->data; - packet_id1 = nc_packet->packet_id; - packet_id2 = batadv_skb_crc32(skb, - skb->data + sizeof(*packet2)); - } else { - /* Destination for skb is selected for MAC-header */ - first_dest = neigh_node; - first_source = ethhdr->h_source; - second_dest = nc_packet->neigh_node; - second_source = nc_packet->nc_path->prev_hop; - packet1 = (struct batadv_unicast_packet *)skb->data; - packet2 = (struct batadv_unicast_packet *)nc_packet->skb->data; - packet_id1 = batadv_skb_crc32(skb, - skb->data + sizeof(*packet1)); - packet_id2 = nc_packet->packet_id; - } - - /* Instead of zero padding the smallest data buffer, we - * code into the largest. - */ - if (skb->len <= nc_packet->skb->len) { - skb_dest = nc_packet->skb; - skb_src = skb; - } else { - skb_dest = skb; - skb_src = nc_packet->skb; - } - - /* coding_len is used when decoding the packet shorter packet */ - coding_len = skb_src->len - unicast_size; - - if (skb_linearize(skb_dest) < 0 || skb_linearize(skb_src) < 0) - goto out; - - skb_push(skb_dest, header_add); - - coded_packet = (struct batadv_coded_packet *)skb_dest->data; - skb_reset_mac_header(skb_dest); - - coded_packet->packet_type = BATADV_CODED; - coded_packet->version = BATADV_COMPAT_VERSION; - coded_packet->ttl = packet1->ttl; - - /* Info about first unicast packet */ - ether_addr_copy(coded_packet->first_source, first_source); - ether_addr_copy(coded_packet->first_orig_dest, packet1->dest); - coded_packet->first_crc = packet_id1; - coded_packet->first_ttvn = packet1->ttvn; - - /* Info about second unicast packet */ - ether_addr_copy(coded_packet->second_dest, second_dest->addr); - ether_addr_copy(coded_packet->second_source, second_source); - ether_addr_copy(coded_packet->second_orig_dest, packet2->dest); - coded_packet->second_crc = packet_id2; - coded_packet->second_ttl = packet2->ttl; - coded_packet->second_ttvn = packet2->ttvn; - coded_packet->coded_len = htons(coding_len); - - /* This is where the magic happens: Code skb_src into skb_dest */ - batadv_nc_memxor(skb_dest->data + coded_size, - skb_src->data + unicast_size, coding_len); - - /* Update counters accordingly */ - if (BATADV_SKB_CB(skb_src)->decoded && - BATADV_SKB_CB(skb_dest)->decoded) { - /* Both packets are recoded */ - count = skb_src->len + ETH_HLEN; - count += skb_dest->len + ETH_HLEN; - batadv_add_counter(bat_priv, BATADV_CNT_NC_RECODE, 2); - batadv_add_counter(bat_priv, BATADV_CNT_NC_RECODE_BYTES, count); - } else if (!BATADV_SKB_CB(skb_src)->decoded && - !BATADV_SKB_CB(skb_dest)->decoded) { - /* Both packets are newly coded */ - count = skb_src->len + ETH_HLEN; - count += skb_dest->len + ETH_HLEN; - batadv_add_counter(bat_priv, BATADV_CNT_NC_CODE, 2); - batadv_add_counter(bat_priv, BATADV_CNT_NC_CODE_BYTES, count); - } else if (BATADV_SKB_CB(skb_src)->decoded && - !BATADV_SKB_CB(skb_dest)->decoded) { - /* skb_src recoded and skb_dest is newly coded */ - batadv_inc_counter(bat_priv, BATADV_CNT_NC_RECODE); - batadv_add_counter(bat_priv, BATADV_CNT_NC_RECODE_BYTES, - skb_src->len + ETH_HLEN); - batadv_inc_counter(bat_priv, BATADV_CNT_NC_CODE); - batadv_add_counter(bat_priv, BATADV_CNT_NC_CODE_BYTES, - skb_dest->len + ETH_HLEN); - } else if (!BATADV_SKB_CB(skb_src)->decoded && - BATADV_SKB_CB(skb_dest)->decoded) { - /* skb_src is newly coded and skb_dest is recoded */ - batadv_inc_counter(bat_priv, BATADV_CNT_NC_CODE); - batadv_add_counter(bat_priv, BATADV_CNT_NC_CODE_BYTES, - skb_src->len + ETH_HLEN); - batadv_inc_counter(bat_priv, BATADV_CNT_NC_RECODE); - batadv_add_counter(bat_priv, BATADV_CNT_NC_RECODE_BYTES, - skb_dest->len + ETH_HLEN); - } - - /* skb_src is now coded into skb_dest, so free it */ - consume_skb(skb_src); - - /* avoid duplicate free of skb from nc_packet */ - nc_packet->skb = NULL; - batadv_nc_packet_free(nc_packet, false); - - /* Send the coded packet and return true */ - batadv_send_unicast_skb(skb_dest, first_dest); - res = true; -out: - batadv_neigh_node_put(router_neigh); - batadv_neigh_node_put(router_coding); - batadv_neigh_ifinfo_put(router_neigh_ifinfo); - batadv_neigh_ifinfo_put(router_coding_ifinfo); - return res; -} - -/** - * batadv_nc_skb_coding_possible() - true if a decoded skb is available at dst. - * @skb: data skb to forward - * @dst: destination mac address of the other skb to code with - * @src: source mac address of skb - * - * Whenever we network code a packet we have to check whether we received it in - * a network coded form. If so, we may not be able to use it for coding because - * some neighbors may also have received (overheard) the packet in the network - * coded form without being able to decode it. It is hard to know which of the - * neighboring nodes was able to decode the packet, therefore we can only - * re-code the packet if the source of the previous encoded packet is involved. - * Since the source encoded the packet we can be certain it has all necessary - * decode information. - * - * Return: true if coding of a decoded packet is allowed. - */ -static bool batadv_nc_skb_coding_possible(struct sk_buff *skb, u8 *dst, u8 *src) -{ - if (BATADV_SKB_CB(skb)->decoded && !batadv_compare_eth(dst, src)) - return false; - return true; -} - -/** - * batadv_nc_path_search() - Find the coding path matching in_nc_node and - * out_nc_node to retrieve a buffered packet that can be used for coding. - * @bat_priv: the bat priv with all the soft interface information - * @in_nc_node: pointer to skb next hop's neighbor nc node - * @out_nc_node: pointer to skb source's neighbor nc node - * @skb: data skb to forward - * @eth_dst: next hop mac address of skb - * - * Return: true if coding of a decoded skb is allowed. - */ -static struct batadv_nc_packet * -batadv_nc_path_search(struct batadv_priv *bat_priv, - struct batadv_nc_node *in_nc_node, - struct batadv_nc_node *out_nc_node, - struct sk_buff *skb, - u8 *eth_dst) -{ - struct batadv_nc_path *nc_path, nc_path_key; - struct batadv_nc_packet *nc_packet_out = NULL; - struct batadv_nc_packet *nc_packet, *nc_packet_tmp; - struct batadv_hashtable *hash = bat_priv->nc.coding_hash; - int idx; - - if (!hash) - return NULL; - - /* Create almost path key */ - batadv_nc_hash_key_gen(&nc_path_key, in_nc_node->addr, - out_nc_node->addr); - idx = batadv_nc_hash_choose(&nc_path_key, hash->size); - - /* Check for coding opportunities in this nc_path */ - rcu_read_lock(); - hlist_for_each_entry_rcu(nc_path, &hash->table[idx], hash_entry) { - if (!batadv_compare_eth(nc_path->prev_hop, in_nc_node->addr)) - continue; - - if (!batadv_compare_eth(nc_path->next_hop, out_nc_node->addr)) - continue; - - spin_lock_bh(&nc_path->packet_list_lock); - if (list_empty(&nc_path->packet_list)) { - spin_unlock_bh(&nc_path->packet_list_lock); - continue; - } - - list_for_each_entry_safe(nc_packet, nc_packet_tmp, - &nc_path->packet_list, list) { - if (!batadv_nc_skb_coding_possible(nc_packet->skb, - eth_dst, - in_nc_node->addr)) - continue; - - /* Coding opportunity is found! */ - list_del(&nc_packet->list); - nc_packet_out = nc_packet; - break; - } - - spin_unlock_bh(&nc_path->packet_list_lock); - break; - } - rcu_read_unlock(); - - return nc_packet_out; -} - -/** - * batadv_nc_skb_src_search() - Loops through the list of neighboring nodes of - * the skb's sender (may be equal to the originator). - * @bat_priv: the bat priv with all the soft interface information - * @skb: data skb to forward - * @eth_dst: next hop mac address of skb - * @eth_src: source mac address of skb - * @in_nc_node: pointer to skb next hop's neighbor nc node - * - * Return: an nc packet if a suitable coding packet was found, NULL otherwise. - */ -static struct batadv_nc_packet * -batadv_nc_skb_src_search(struct batadv_priv *bat_priv, - struct sk_buff *skb, - u8 *eth_dst, - u8 *eth_src, - struct batadv_nc_node *in_nc_node) -{ - struct batadv_orig_node *orig_node; - struct batadv_nc_node *out_nc_node; - struct batadv_nc_packet *nc_packet = NULL; - - orig_node = batadv_orig_hash_find(bat_priv, eth_src); - if (!orig_node) - return NULL; - - rcu_read_lock(); - list_for_each_entry_rcu(out_nc_node, - &orig_node->out_coding_list, list) { - /* Check if the skb is decoded and if recoding is possible */ - if (!batadv_nc_skb_coding_possible(skb, - out_nc_node->addr, eth_src)) - continue; - - /* Search for an opportunity in this nc_path */ - nc_packet = batadv_nc_path_search(bat_priv, in_nc_node, - out_nc_node, skb, eth_dst); - if (nc_packet) - break; - } - rcu_read_unlock(); - - batadv_orig_node_put(orig_node); - return nc_packet; -} - -/** - * batadv_nc_skb_store_before_coding() - set the ethernet src and dst of the - * unicast skb before it is stored for use in later decoding - * @bat_priv: the bat priv with all the soft interface information - * @skb: data skb to store - * @eth_dst_new: new destination mac address of skb - */ -static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv, - struct sk_buff *skb, - u8 *eth_dst_new) -{ - struct ethhdr *ethhdr; - - /* Copy skb header to change the mac header */ - skb = pskb_copy_for_clone(skb, GFP_ATOMIC); - if (!skb) - return; - - /* Set the mac header as if we actually sent the packet uncoded */ - ethhdr = eth_hdr(skb); - ether_addr_copy(ethhdr->h_source, ethhdr->h_dest); - ether_addr_copy(ethhdr->h_dest, eth_dst_new); - - /* Set data pointer to MAC header to mimic packets from our tx path */ - skb_push(skb, ETH_HLEN); - - /* Add the packet to the decoding packet pool */ - batadv_nc_skb_store_for_decoding(bat_priv, skb); - - /* batadv_nc_skb_store_for_decoding() clones the skb, so we must free - * our ref - */ - consume_skb(skb); -} - -/** - * batadv_nc_skb_dst_search() - Loops through list of neighboring nodes to dst. - * @skb: data skb to forward - * @neigh_node: next hop to forward packet to - * @ethhdr: pointer to the ethernet header inside the skb - * - * Loops through the list of neighboring nodes the next hop has a good - * connection to (receives OGMs with a sufficient quality). We need to find a - * neighbor of our next hop that potentially sent a packet which our next hop - * also received (overheard) and has stored for later decoding. - * - * Return: true if the skb was consumed (encoded packet sent) or false otherwise - */ -static bool batadv_nc_skb_dst_search(struct sk_buff *skb, - struct batadv_neigh_node *neigh_node, - struct ethhdr *ethhdr) -{ - struct net_device *netdev = neigh_node->if_incoming->soft_iface; - struct batadv_priv *bat_priv = netdev_priv(netdev); - struct batadv_orig_node *orig_node = neigh_node->orig_node; - struct batadv_nc_node *nc_node; - struct batadv_nc_packet *nc_packet = NULL; - - rcu_read_lock(); - list_for_each_entry_rcu(nc_node, &orig_node->in_coding_list, list) { - /* Search for coding opportunity with this in_nc_node */ - nc_packet = batadv_nc_skb_src_search(bat_priv, skb, - neigh_node->addr, - ethhdr->h_source, nc_node); - - /* Opportunity was found, so stop searching */ - if (nc_packet) - break; - } - rcu_read_unlock(); - - if (!nc_packet) - return false; - - /* Save packets for later decoding */ - batadv_nc_skb_store_before_coding(bat_priv, skb, - neigh_node->addr); - batadv_nc_skb_store_before_coding(bat_priv, nc_packet->skb, - nc_packet->neigh_node->addr); - - /* Code and send packets */ - if (batadv_nc_code_packets(bat_priv, skb, ethhdr, nc_packet, - neigh_node)) - return true; - - /* out of mem ? Coding failed - we have to free the buffered packet - * to avoid memleaks. The skb passed as argument will be dealt with - * by the calling function. - */ - batadv_nc_send_packet(nc_packet); - return false; -} - -/** - * batadv_nc_skb_add_to_path() - buffer skb for later encoding / decoding - * @skb: skb to add to path - * @nc_path: path to add skb to - * @neigh_node: next hop to forward packet to - * @packet_id: checksum to identify packet - * - * Return: true if the packet was buffered or false in case of an error. - */ -static bool batadv_nc_skb_add_to_path(struct sk_buff *skb, - struct batadv_nc_path *nc_path, - struct batadv_neigh_node *neigh_node, - __be32 packet_id) -{ - struct batadv_nc_packet *nc_packet; - - nc_packet = kzalloc(sizeof(*nc_packet), GFP_ATOMIC); - if (!nc_packet) - return false; - - /* Initialize nc_packet */ - nc_packet->timestamp = jiffies; - nc_packet->packet_id = packet_id; - nc_packet->skb = skb; - nc_packet->neigh_node = neigh_node; - nc_packet->nc_path = nc_path; - - /* Add coding packet to list */ - spin_lock_bh(&nc_path->packet_list_lock); - list_add_tail(&nc_packet->list, &nc_path->packet_list); - spin_unlock_bh(&nc_path->packet_list_lock); - - return true; -} - -/** - * batadv_nc_skb_forward() - try to code a packet or add it to the coding packet - * buffer - * @skb: data skb to forward - * @neigh_node: next hop to forward packet to - * - * Return: true if the skb was consumed (encoded packet sent) or false otherwise - */ -bool batadv_nc_skb_forward(struct sk_buff *skb, - struct batadv_neigh_node *neigh_node) -{ - const struct net_device *netdev = neigh_node->if_incoming->soft_iface; - struct batadv_priv *bat_priv = netdev_priv(netdev); - struct batadv_unicast_packet *packet; - struct batadv_nc_path *nc_path; - struct ethhdr *ethhdr = eth_hdr(skb); - __be32 packet_id; - u8 *payload; - - /* Check if network coding is enabled */ - if (!atomic_read(&bat_priv->network_coding)) - goto out; - - /* We only handle unicast packets */ - payload = skb_network_header(skb); - packet = (struct batadv_unicast_packet *)payload; - if (packet->packet_type != BATADV_UNICAST) - goto out; - - /* Try to find a coding opportunity and send the skb if one is found */ - if (batadv_nc_skb_dst_search(skb, neigh_node, ethhdr)) - return true; - - /* Find or create a nc_path for this src-dst pair */ - nc_path = batadv_nc_get_path(bat_priv, - bat_priv->nc.coding_hash, - ethhdr->h_source, - neigh_node->addr); - - if (!nc_path) - goto out; - - /* Add skb to nc_path */ - packet_id = batadv_skb_crc32(skb, payload + sizeof(*packet)); - if (!batadv_nc_skb_add_to_path(skb, nc_path, neigh_node, packet_id)) - goto free_nc_path; - - /* Packet is consumed */ - return true; - -free_nc_path: - batadv_nc_path_put(nc_path); -out: - /* Packet is not consumed */ - return false; -} - -/** - * batadv_nc_skb_store_for_decoding() - save a clone of the skb which can be - * used when decoding coded packets - * @bat_priv: the bat priv with all the soft interface information - * @skb: data skb to store - */ -void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv, - struct sk_buff *skb) -{ - struct batadv_unicast_packet *packet; - struct batadv_nc_path *nc_path; - struct ethhdr *ethhdr = eth_hdr(skb); - __be32 packet_id; - u8 *payload; - - /* Check if network coding is enabled */ - if (!atomic_read(&bat_priv->network_coding)) - goto out; - - /* Check for supported packet type */ - payload = skb_network_header(skb); - packet = (struct batadv_unicast_packet *)payload; - if (packet->packet_type != BATADV_UNICAST) - goto out; - - /* Find existing nc_path or create a new */ - nc_path = batadv_nc_get_path(bat_priv, - bat_priv->nc.decoding_hash, - ethhdr->h_source, - ethhdr->h_dest); - - if (!nc_path) - goto out; - - /* Clone skb and adjust skb->data to point at batman header */ - skb = skb_clone(skb, GFP_ATOMIC); - if (unlikely(!skb)) - goto free_nc_path; - - if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) - goto free_skb; - - if (unlikely(!skb_pull_rcsum(skb, ETH_HLEN))) - goto free_skb; - - /* Add skb to nc_path */ - packet_id = batadv_skb_crc32(skb, payload + sizeof(*packet)); - if (!batadv_nc_skb_add_to_path(skb, nc_path, NULL, packet_id)) - goto free_skb; - - batadv_inc_counter(bat_priv, BATADV_CNT_NC_BUFFER); - return; - -free_skb: - kfree_skb(skb); -free_nc_path: - batadv_nc_path_put(nc_path); -out: - return; -} - -/** - * batadv_nc_skb_store_sniffed_unicast() - check if a received unicast packet - * should be saved in the decoding buffer and, if so, store it there - * @bat_priv: the bat priv with all the soft interface information - * @skb: unicast skb to store - */ -void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv, - struct sk_buff *skb) -{ - struct ethhdr *ethhdr = eth_hdr(skb); - - if (batadv_is_my_mac(bat_priv, ethhdr->h_dest)) - return; - - /* Set data pointer to MAC header to mimic packets from our tx path */ - skb_push(skb, ETH_HLEN); - - batadv_nc_skb_store_for_decoding(bat_priv, skb); -} - -/** - * batadv_nc_skb_decode_packet() - decode given skb using the decode data stored - * in nc_packet - * @bat_priv: the bat priv with all the soft interface information - * @skb: unicast skb to decode - * @nc_packet: decode data needed to decode the skb - * - * Return: pointer to decoded unicast packet if the packet was decoded or NULL - * in case of an error. - */ -static struct batadv_unicast_packet * -batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb, - struct batadv_nc_packet *nc_packet) -{ - const int h_size = sizeof(struct batadv_unicast_packet); - const int h_diff = sizeof(struct batadv_coded_packet) - h_size; - struct batadv_unicast_packet *unicast_packet; - struct batadv_coded_packet coded_packet_tmp; - struct ethhdr *ethhdr, ethhdr_tmp; - u8 *orig_dest, ttl, ttvn; - unsigned int coding_len; - int err; - - /* Save headers temporarily */ - memcpy(&coded_packet_tmp, skb->data, sizeof(coded_packet_tmp)); - memcpy(ðhdr_tmp, skb_mac_header(skb), sizeof(ethhdr_tmp)); - - if (skb_cow(skb, 0) < 0) - return NULL; - - if (unlikely(!skb_pull_rcsum(skb, h_diff))) - return NULL; - - /* Data points to batman header, so set mac header 14 bytes before - * and network to data - */ - skb_set_mac_header(skb, -ETH_HLEN); - skb_reset_network_header(skb); - - /* Reconstruct original mac header */ - ethhdr = eth_hdr(skb); - *ethhdr = ethhdr_tmp; - - /* Select the correct unicast header information based on the location - * of our mac address in the coded_packet header - */ - if (batadv_is_my_mac(bat_priv, coded_packet_tmp.second_dest)) { - /* If we are the second destination the packet was overheard, - * so the Ethernet address must be copied to h_dest and - * pkt_type changed from PACKET_OTHERHOST to PACKET_HOST - */ - ether_addr_copy(ethhdr->h_dest, coded_packet_tmp.second_dest); - skb->pkt_type = PACKET_HOST; - - orig_dest = coded_packet_tmp.second_orig_dest; - ttl = coded_packet_tmp.second_ttl; - ttvn = coded_packet_tmp.second_ttvn; - } else { - orig_dest = coded_packet_tmp.first_orig_dest; - ttl = coded_packet_tmp.ttl; - ttvn = coded_packet_tmp.first_ttvn; - } - - coding_len = ntohs(coded_packet_tmp.coded_len); - - if (coding_len > skb->len) - return NULL; - - /* Here the magic is reversed: - * extract the missing packet from the received coded packet - */ - batadv_nc_memxor(skb->data + h_size, - nc_packet->skb->data + h_size, - coding_len); - - /* Resize decoded skb if decoded with larger packet */ - if (nc_packet->skb->len > coding_len + h_size) { - err = pskb_trim_rcsum(skb, coding_len + h_size); - if (err) - return NULL; - } - - /* Create decoded unicast packet */ - unicast_packet = (struct batadv_unicast_packet *)skb->data; - unicast_packet->packet_type = BATADV_UNICAST; - unicast_packet->version = BATADV_COMPAT_VERSION; - unicast_packet->ttl = ttl; - ether_addr_copy(unicast_packet->dest, orig_dest); - unicast_packet->ttvn = ttvn; - - batadv_nc_packet_free(nc_packet, false); - return unicast_packet; -} - -/** - * batadv_nc_find_decoding_packet() - search through buffered decoding data to - * find the data needed to decode the coded packet - * @bat_priv: the bat priv with all the soft interface information - * @ethhdr: pointer to the ethernet header inside the coded packet - * @coded: coded packet we try to find decode data for - * - * Return: pointer to nc packet if the needed data was found or NULL otherwise. - */ -static struct batadv_nc_packet * -batadv_nc_find_decoding_packet(struct batadv_priv *bat_priv, - struct ethhdr *ethhdr, - struct batadv_coded_packet *coded) -{ - struct batadv_hashtable *hash = bat_priv->nc.decoding_hash; - struct batadv_nc_packet *tmp_nc_packet, *nc_packet = NULL; - struct batadv_nc_path *nc_path, nc_path_key; - u8 *dest, *source; - __be32 packet_id; - int index; - - if (!hash) - return NULL; - - /* Select the correct packet id based on the location of our mac-addr */ - dest = ethhdr->h_source; - if (!batadv_is_my_mac(bat_priv, coded->second_dest)) { - source = coded->second_source; - packet_id = coded->second_crc; - } else { - source = coded->first_source; - packet_id = coded->first_crc; - } - - batadv_nc_hash_key_gen(&nc_path_key, source, dest); - index = batadv_nc_hash_choose(&nc_path_key, hash->size); - - /* Search for matching coding path */ - rcu_read_lock(); - hlist_for_each_entry_rcu(nc_path, &hash->table[index], hash_entry) { - /* Find matching nc_packet */ - spin_lock_bh(&nc_path->packet_list_lock); - list_for_each_entry(tmp_nc_packet, - &nc_path->packet_list, list) { - if (packet_id == tmp_nc_packet->packet_id) { - list_del(&tmp_nc_packet->list); - - nc_packet = tmp_nc_packet; - break; - } - } - spin_unlock_bh(&nc_path->packet_list_lock); - - if (nc_packet) - break; - } - rcu_read_unlock(); - - if (!nc_packet) - batadv_dbg(BATADV_DBG_NC, bat_priv, - "No decoding packet found for %u\n", packet_id); - - return nc_packet; -} - -/** - * batadv_nc_recv_coded_packet() - try to decode coded packet and enqueue the - * resulting unicast packet - * @skb: incoming coded packet - * @recv_if: pointer to interface this packet was received on - * - * Return: NET_RX_SUCCESS if the packet has been consumed or NET_RX_DROP - * otherwise. - */ -static int batadv_nc_recv_coded_packet(struct sk_buff *skb, - struct batadv_hard_iface *recv_if) -{ - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); - struct batadv_unicast_packet *unicast_packet; - struct batadv_coded_packet *coded_packet; - struct batadv_nc_packet *nc_packet; - struct ethhdr *ethhdr; - int hdr_size = sizeof(*coded_packet); - - /* Check if network coding is enabled */ - if (!atomic_read(&bat_priv->network_coding)) - goto free_skb; - - /* Make sure we can access (and remove) header */ - if (unlikely(!pskb_may_pull(skb, hdr_size))) - goto free_skb; - - coded_packet = (struct batadv_coded_packet *)skb->data; - ethhdr = eth_hdr(skb); - - /* Verify frame is destined for us */ - if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest) && - !batadv_is_my_mac(bat_priv, coded_packet->second_dest)) - goto free_skb; - - /* Update stat counter */ - if (batadv_is_my_mac(bat_priv, coded_packet->second_dest)) - batadv_inc_counter(bat_priv, BATADV_CNT_NC_SNIFFED); - - nc_packet = batadv_nc_find_decoding_packet(bat_priv, ethhdr, - coded_packet); - if (!nc_packet) { - batadv_inc_counter(bat_priv, BATADV_CNT_NC_DECODE_FAILED); - goto free_skb; - } - - /* Make skb's linear, because decoding accesses the entire buffer */ - if (skb_linearize(skb) < 0) - goto free_nc_packet; - - if (skb_linearize(nc_packet->skb) < 0) - goto free_nc_packet; - - /* Decode the packet */ - unicast_packet = batadv_nc_skb_decode_packet(bat_priv, skb, nc_packet); - if (!unicast_packet) { - batadv_inc_counter(bat_priv, BATADV_CNT_NC_DECODE_FAILED); - goto free_nc_packet; - } - - /* Mark packet as decoded to do correct recoding when forwarding */ - BATADV_SKB_CB(skb)->decoded = true; - batadv_inc_counter(bat_priv, BATADV_CNT_NC_DECODE); - batadv_add_counter(bat_priv, BATADV_CNT_NC_DECODE_BYTES, - skb->len + ETH_HLEN); - return batadv_recv_unicast_packet(skb, recv_if); - -free_nc_packet: - batadv_nc_packet_free(nc_packet, true); -free_skb: - kfree_skb(skb); - - return NET_RX_DROP; -} - -/** - * batadv_nc_mesh_free() - clean up network coding memory - * @bat_priv: the bat priv with all the soft interface information - */ -void batadv_nc_mesh_free(struct batadv_priv *bat_priv) -{ - batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_NC, 1); - batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_NC, 1); - cancel_delayed_work_sync(&bat_priv->nc.work); - - batadv_nc_purge_paths(bat_priv, bat_priv->nc.coding_hash, NULL); - batadv_hash_destroy(bat_priv->nc.coding_hash); - batadv_nc_purge_paths(bat_priv, bat_priv->nc.decoding_hash, NULL); - batadv_hash_destroy(bat_priv->nc.decoding_hash); -} diff --git a/net/batman-adv/network-coding.h b/net/batman-adv/network-coding.h deleted file mode 100644 index 368cc3130e4c..000000000000 --- a/net/batman-adv/network-coding.h +++ /dev/null @@ -1,106 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) B.A.T.M.A.N. contributors: - * - * Martin Hundebøll, Jeppe Ledet-Pedersen - */ - -#ifndef _NET_BATMAN_ADV_NETWORK_CODING_H_ -#define _NET_BATMAN_ADV_NETWORK_CODING_H_ - -#include "main.h" - -#include <linux/netdevice.h> -#include <linux/skbuff.h> -#include <linux/types.h> -#include <uapi/linux/batadv_packet.h> - -#ifdef CONFIG_BATMAN_ADV_NC - -void batadv_nc_status_update(struct net_device *net_dev); -int batadv_nc_init(void); -int batadv_nc_mesh_init(struct batadv_priv *bat_priv); -void batadv_nc_mesh_free(struct batadv_priv *bat_priv); -void batadv_nc_update_nc_node(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - struct batadv_orig_node *orig_neigh_node, - struct batadv_ogm_packet *ogm_packet, - int is_single_hop_neigh); -void batadv_nc_purge_orig(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - bool (*to_purge)(struct batadv_priv *, - struct batadv_nc_node *)); -void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv); -void batadv_nc_init_orig(struct batadv_orig_node *orig_node); -bool batadv_nc_skb_forward(struct sk_buff *skb, - struct batadv_neigh_node *neigh_node); -void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv, - struct sk_buff *skb); -void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv, - struct sk_buff *skb); - -#else /* ifdef CONFIG_BATMAN_ADV_NC */ - -static inline void batadv_nc_status_update(struct net_device *net_dev) -{ -} - -static inline int batadv_nc_init(void) -{ - return 0; -} - -static inline int batadv_nc_mesh_init(struct batadv_priv *bat_priv) -{ - return 0; -} - -static inline void batadv_nc_mesh_free(struct batadv_priv *bat_priv) -{ -} - -static inline void -batadv_nc_update_nc_node(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - struct batadv_orig_node *orig_neigh_node, - struct batadv_ogm_packet *ogm_packet, - int is_single_hop_neigh) -{ -} - -static inline void -batadv_nc_purge_orig(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - bool (*to_purge)(struct batadv_priv *, - struct batadv_nc_node *)) -{ -} - -static inline void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv) -{ -} - -static inline void batadv_nc_init_orig(struct batadv_orig_node *orig_node) -{ -} - -static inline bool batadv_nc_skb_forward(struct sk_buff *skb, - struct batadv_neigh_node *neigh_node) -{ - return false; -} - -static inline void -batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv, - struct sk_buff *skb) -{ -} - -static inline void -batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv, - struct sk_buff *skb) -{ -} - -#endif /* ifdef CONFIG_BATMAN_ADV_NC */ - -#endif /* _NET_BATMAN_ADV_NETWORK_CODING_H_ */ diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 8f6dd2c6ee41..a662408ad867 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -9,6 +9,7 @@ #include <linux/atomic.h> #include <linux/container_of.h> +#include <linux/err.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -26,11 +27,8 @@ #include <linux/spinlock.h> #include <linux/stddef.h> #include <linux/workqueue.h> -#include <net/sock.h> #include <uapi/linux/batadv_packet.h> -#include <uapi/linux/batman_adv.h> -#include "bat_algo.h" #include "distributed-arp-table.h" #include "fragmentation.h" #include "gateway_client.h" @@ -39,9 +37,7 @@ #include "log.h" #include "multicast.h" #include "netlink.h" -#include "network-coding.h" #include "routing.h" -#include "soft-interface.h" #include "translation-table.h" /* hash class keys */ @@ -49,7 +45,7 @@ static struct lock_class_key batadv_orig_hash_lock_class_key; /** * batadv_orig_hash_find() - Find and return originator from orig_hash - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @data: mac address of the originator * * Return: orig_node (with increased refcnt), NULL on errors @@ -215,7 +211,7 @@ void batadv_orig_node_vlan_release(struct kref *ref) /** * batadv_originator_init() - Initialize all originator structures - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 on success or negative error number in case of failure */ @@ -340,7 +336,7 @@ batadv_orig_router_get(struct batadv_orig_node *orig_node, /** * batadv_orig_to_router() - get next hop neighbor to an orig address - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_addr: the originator MAC address to search the best next hop router for * @if_outgoing: the interface where the payload packet has been received or * the OGM should be sent to @@ -569,7 +565,7 @@ batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface, const u8 *neigh_addr, struct batadv_orig_node *orig_node) { - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(hard_iface->mesh_iface); struct batadv_hardif_neigh_node *hardif_neigh; spin_lock_bh(&hard_iface->neigh_list_lock); @@ -755,65 +751,54 @@ batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, */ int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) { - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; - struct net_device *hard_iface = NULL; - struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; + struct batadv_hard_iface *primary_if, *hard_iface; + struct net_device *mesh_iface; struct batadv_priv *bat_priv; - struct batadv_hard_iface *primary_if = NULL; int ret; - int ifindex, hard_ifindex; - ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } - - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); primary_if = batadv_primary_if_get_selected(bat_priv); - if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { + if (!primary_if) { ret = -ENOENT; - goto out; + goto out_put_mesh_iface; } - hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, - BATADV_ATTR_HARD_IFINDEX); - if (hard_ifindex) { - hard_iface = dev_get_by_index(net, hard_ifindex); - if (hard_iface) - hardif = batadv_hardif_get_by_netdev(hard_iface); - - if (!hardif) { - ret = -ENODEV; - goto out; - } + if (primary_if->if_status != BATADV_IF_ACTIVE) { + ret = -ENOENT; + goto out_put_primary_if; + } - if (hardif->soft_iface != soft_iface) { - ret = -ENOENT; - goto out; - } + hard_iface = batadv_netlink_get_hardif(bat_priv, cb); + if (IS_ERR(hard_iface) && PTR_ERR(hard_iface) != -ENONET) { + ret = PTR_ERR(hard_iface); + goto out_put_primary_if; + } else if (IS_ERR(hard_iface)) { + /* => PTR_ERR(hard_iface) == -ENONET + * => no hard-iface given, ok + */ + hard_iface = BATADV_IF_DEFAULT; } if (!bat_priv->algo_ops->neigh.dump) { ret = -EOPNOTSUPP; - goto out; + goto out_put_hard_iface; } - bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hardif); + bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hard_iface); ret = msg->len; - out: - batadv_hardif_put(hardif); - dev_put(hard_iface); +out_put_hard_iface: + batadv_hardif_put(hard_iface); +out_put_primary_if: batadv_hardif_put(primary_if); - dev_put(soft_iface); +out_put_mesh_iface: + dev_put(mesh_iface); return ret; } @@ -902,15 +887,12 @@ void batadv_orig_node_release(struct kref *ref) } spin_unlock_bh(&orig_node->vlan_list_lock); - /* Free nc_nodes */ - batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); - call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); } /** * batadv_originator_free() - Free all originator structures - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_originator_free(struct batadv_priv *bat_priv) { @@ -946,7 +928,7 @@ void batadv_originator_free(struct batadv_priv *bat_priv) /** * batadv_orig_node_new() - creates a new orig_node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the mac address of the originator * * Creates a new originator object and initialises all the generic fields. @@ -978,8 +960,6 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, spin_lock_init(&orig_node->tt_lock); spin_lock_init(&orig_node->vlan_list_lock); - batadv_nc_init_orig(orig_node); - /* extra reference for return */ kref_init(&orig_node->refcount); @@ -1027,7 +1007,7 @@ free_orig_node: /** * batadv_purge_neigh_ifinfo() - purge obsolete ifinfo entries from neighbor - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @neigh: orig node which is to be checked */ static void @@ -1068,7 +1048,7 @@ batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, /** * batadv_purge_orig_ifinfo() - purge obsolete ifinfo entries from originator - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which is to be checked * * Return: true if any ifinfo entry was purged, false otherwise. @@ -1120,7 +1100,7 @@ batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, /** * batadv_purge_orig_neighbors() - purges neighbors from originator - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which is to be checked * * Return: true if any neighbor was purged, false otherwise @@ -1178,7 +1158,7 @@ batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, /** * batadv_find_best_neighbor() - finds the best neighbor after purging - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which is to be checked * @if_outgoing: the interface for which the metric should be compared * @@ -1212,7 +1192,7 @@ batadv_find_best_neighbor(struct batadv_priv *bat_priv, /** * batadv_purge_orig_node() - purges obsolete information from an orig_node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which is to be checked * * This function checks if the orig_node or substructures of it have become @@ -1226,6 +1206,7 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, struct batadv_neigh_node *best_neigh_node; struct batadv_hard_iface *hard_iface; bool changed_ifinfo, changed_neigh; + struct list_head *iter; if (batadv_has_timed_out(orig_node->last_seen, 2 * BATADV_PURGE_TIMEOUT)) { @@ -1250,13 +1231,10 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, /* ... then for all other interfaces. */ rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (hard_iface->if_status != BATADV_IF_ACTIVE) continue; - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - if (!kref_get_unless_zero(&hard_iface->refcount)) continue; @@ -1276,7 +1254,7 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, /** * batadv_purge_orig_ref() - Purge all outdated originators - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_purge_orig_ref(struct batadv_priv *bat_priv) { @@ -1342,65 +1320,54 @@ static void batadv_purge_orig(struct work_struct *work) */ int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb) { - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; - struct net_device *hard_iface = NULL; - struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; + struct batadv_hard_iface *primary_if, *hard_iface; + struct net_device *mesh_iface; struct batadv_priv *bat_priv; - struct batadv_hard_iface *primary_if = NULL; int ret; - int ifindex, hard_ifindex; - - ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); primary_if = batadv_primary_if_get_selected(bat_priv); - if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { + if (!primary_if) { ret = -ENOENT; - goto out; + goto out_put_mesh_iface; } - hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, - BATADV_ATTR_HARD_IFINDEX); - if (hard_ifindex) { - hard_iface = dev_get_by_index(net, hard_ifindex); - if (hard_iface) - hardif = batadv_hardif_get_by_netdev(hard_iface); - - if (!hardif) { - ret = -ENODEV; - goto out; - } + if (primary_if->if_status != BATADV_IF_ACTIVE) { + ret = -ENOENT; + goto out_put_primary_if; + } - if (hardif->soft_iface != soft_iface) { - ret = -ENOENT; - goto out; - } + hard_iface = batadv_netlink_get_hardif(bat_priv, cb); + if (IS_ERR(hard_iface) && PTR_ERR(hard_iface) != -ENONET) { + ret = PTR_ERR(hard_iface); + goto out_put_primary_if; + } else if (IS_ERR(hard_iface)) { + /* => PTR_ERR(hard_iface) == -ENONET + * => no hard-iface given, ok + */ + hard_iface = BATADV_IF_DEFAULT; } if (!bat_priv->algo_ops->orig.dump) { ret = -EOPNOTSUPP; - goto out; + goto out_put_hard_iface; } - bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hardif); + bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hard_iface); ret = msg->len; - out: - batadv_hardif_put(hardif); - dev_put(hard_iface); +out_put_hard_iface: + batadv_hardif_put(hard_iface); +out_put_primary_if: batadv_hardif_put(primary_if); - dev_put(soft_iface); +out_put_mesh_iface: + dev_put(mesh_iface); return ret; } diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index f1061985149f..12c16f81cc51 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -30,10 +30,9 @@ #include "fragmentation.h" #include "hard-interface.h" #include "log.h" -#include "network-coding.h" +#include "mesh-interface.h" #include "originator.h" #include "send.h" -#include "soft-interface.h" #include "tp_meter.h" #include "translation-table.h" #include "tvlv.h" @@ -43,7 +42,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb, /** * _batadv_update_route() - set the router for this originator - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which is to be configured * @recv_if: the receive interface for which this route is set * @neigh_node: neighbor which should be the next router @@ -106,7 +105,7 @@ static void _batadv_update_route(struct batadv_priv *bat_priv, /** * batadv_update_route() - set the router for this originator - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which is to be configured * @recv_if: the receive interface for which this route is set * @neigh_node: neighbor which should be the next router @@ -133,7 +132,7 @@ out: /** * batadv_window_protected() - checks whether the host restarted and is in the * protection time. - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @seq_num_diff: difference between the current/received sequence number and * the last sequence number * @seq_old_max_diff: maximum age of sequence number not considered as restart @@ -207,7 +206,7 @@ bool batadv_check_management_packet(struct sk_buff *skb, /** * batadv_recv_my_icmp_packet() - receive an icmp packet locally - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: icmp packet to process * * Return: NET_RX_SUCCESS if the packet has been consumed or NET_RX_DROP @@ -338,7 +337,7 @@ out: int batadv_recv_icmp_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); struct batadv_icmp_header *icmph; struct batadv_icmp_packet_rr *icmp_packet_rr; struct ethhdr *ethhdr; @@ -428,7 +427,7 @@ free_skb: /** * batadv_check_unicast_packet() - Check for malformed unicast packets - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: packet to check * @hdr_size: size of header to pull * @@ -511,7 +510,7 @@ batadv_last_bonding_replace(struct batadv_orig_node *orig_node, /** * batadv_find_router() - find a suitable router for this originator - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: the destination node * @recv_if: pointer to interface this packet was received on * @@ -656,7 +655,7 @@ next: static int batadv_route_unicast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); struct batadv_orig_node *orig_node = NULL; struct batadv_unicast_packet *unicast_packet; struct ethhdr *ethhdr = eth_hdr(skb); @@ -727,7 +726,7 @@ free_skb: /** * batadv_reroute_unicast_packet() - update the unicast header for re-routing - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: unicast packet to process * @unicast_packet: the unicast header to be updated * @dst_addr: the payload destination @@ -879,7 +878,7 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv, return false; /* update the header in order to let the packet be delivered to this - * node's soft interface + * node's mesh interface */ primary_if = batadv_primary_if_get_selected(bat_priv); if (!primary_if) @@ -909,7 +908,7 @@ int batadv_recv_unhandled_unicast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { struct batadv_unicast_packet *unicast_packet; - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); int check, hdr_size = sizeof(*unicast_packet); check = batadv_check_unicast_packet(bat_priv, skb, hdr_size); @@ -938,7 +937,7 @@ free_skb: int batadv_recv_unicast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); struct batadv_unicast_packet *unicast_packet; struct batadv_unicast_4addr_packet *unicast_4addr_packet; u8 *orig_addr, *orig_addr_gw; @@ -956,15 +955,9 @@ int batadv_recv_unicast_packet(struct sk_buff *skb, /* function returns -EREMOTE for promiscuous packets */ check = batadv_check_unicast_packet(bat_priv, skb, hdr_size); - - /* Even though the packet is not for us, we might save it to use for - * decoding a later received coded packet - */ - if (check == -EREMOTE) - batadv_nc_skb_store_sniffed_unicast(bat_priv, skb); - if (check < 0) goto free_skb; + if (!batadv_check_unicast_ttvn(bat_priv, skb, hdr_size)) goto free_skb; @@ -1017,7 +1010,7 @@ int batadv_recv_unicast_packet(struct sk_buff *skb, batadv_dat_snoop_incoming_dhcp_ack(bat_priv, skb, hdr_size); - batadv_interface_rx(recv_if->soft_iface, skb, hdr_size, + batadv_interface_rx(recv_if->mesh_iface, skb, hdr_size, orig_node); rx_success: @@ -1047,7 +1040,7 @@ free_skb: int batadv_recv_unicast_tvlv(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); struct batadv_unicast_tvlv_packet *unicast_tvlv_packet; unsigned char *tvlv_buff; u16 tvlv_buff_len; @@ -1103,7 +1096,7 @@ free_skb: int batadv_recv_frag_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); struct batadv_orig_node *orig_node_src = NULL; struct batadv_frag_packet *frag_packet; int ret = NET_RX_DROP; @@ -1165,7 +1158,7 @@ free_skb: int batadv_recv_bcast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); struct batadv_orig_node *orig_node = NULL; struct batadv_bcast_packet *bcast_packet; struct ethhdr *ethhdr; @@ -1255,7 +1248,7 @@ int batadv_recv_bcast_packet(struct sk_buff *skb, batadv_dat_snoop_incoming_dhcp_ack(bat_priv, skb, hdr_size); /* broadcast for me */ - batadv_interface_rx(recv_if->soft_iface, skb, hdr_size, orig_node); + batadv_interface_rx(recv_if->mesh_iface, skb, hdr_size, orig_node); rx_success: ret = NET_RX_SUCCESS; @@ -1279,14 +1272,14 @@ out: * * Parses the given, received batman-adv multicast packet. Depending on the * contents of its TVLV forwards it and/or decapsulates it to hand it to the - * soft interface. + * mesh interface. * * Return: NET_RX_DROP if the skb is not consumed, NET_RX_SUCCESS otherwise. */ int batadv_recv_mcast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); + struct batadv_priv *bat_priv = netdev_priv(recv_if->mesh_iface); struct batadv_mcast_packet *mcast_packet; int hdr_size = sizeof(*mcast_packet); unsigned char *tvlv_buff; @@ -1329,7 +1322,7 @@ int batadv_recv_mcast_packet(struct sk_buff *skb, batadv_add_counter(bat_priv, BATADV_CNT_MCAST_RX_LOCAL_BYTES, skb->len - hdr_size); - batadv_interface_rx(bat_priv->soft_iface, skb, hdr_size, NULL); + batadv_interface_rx(bat_priv->mesh_iface, skb, hdr_size, NULL); /* skb was consumed */ skb = NULL; } diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index 0379b126865d..20d85c681064 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -21,7 +21,6 @@ #include <linux/list.h> #include <linux/netdevice.h> #include <linux/printk.h> -#include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/skbuff.h> #include <linux/slab.h> @@ -34,10 +33,9 @@ #include "gateway_client.h" #include "hard-interface.h" #include "log.h" -#include "network-coding.h" +#include "mesh-interface.h" #include "originator.h" #include "routing.h" -#include "soft-interface.h" #include "translation-table.h" static void batadv_send_outstanding_bcast_packet(struct work_struct *work); @@ -64,12 +62,9 @@ int batadv_send_skb_packet(struct sk_buff *skb, struct batadv_hard_iface *hard_iface, const u8 *dst_addr) { - struct batadv_priv *bat_priv; struct ethhdr *ethhdr; int ret; - bat_priv = netdev_priv(hard_iface->soft_iface); - if (hard_iface->if_status != BATADV_IF_ACTIVE) goto send_skb_err; @@ -98,9 +93,6 @@ int batadv_send_skb_packet(struct sk_buff *skb, skb->dev = hard_iface->net_dev; - /* Save a clone of the skb to use when decoding coded packets */ - batadv_nc_skb_store_for_decoding(bat_priv, skb); - /* dev_queue_xmit() returns a negative result on error. However on * congestion and traffic shaping, it drops and returns NET_XMIT_DROP * (which is > 0). This will not be treated as an error. @@ -124,7 +116,9 @@ send_skb_err: int batadv_send_broadcast_skb(struct sk_buff *skb, struct batadv_hard_iface *hard_iface) { - return batadv_send_skb_packet(skb, hard_iface, batadv_broadcast_addr); + static const u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + + return batadv_send_skb_packet(skb, hard_iface, broadcast_addr); } /** @@ -201,14 +195,7 @@ int batadv_send_skb_to_orig(struct sk_buff *skb, goto put_neigh_node; } - /* try to network code the packet, if it is received on an interface - * (i.e. being forwarded). If the packet originates from this node or if - * network coding fails, then send the packet as usual. - */ - if (recv_if && batadv_nc_skb_forward(skb, neigh_node)) - ret = -EINPROGRESS; - else - ret = batadv_send_unicast_skb(skb, neigh_node); + ret = batadv_send_unicast_skb(skb, neigh_node); /* skb was consumed */ skb = NULL; @@ -272,7 +259,7 @@ static bool batadv_send_skb_prepare_unicast(struct sk_buff *skb, /** * batadv_send_skb_prepare_unicast_4addr() - encapsulate an skb with a * unicast 4addr header - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the skb containing the payload to encapsulate * @orig: the destination node * @packet_subtype: the unicast 4addr packet subtype to use @@ -314,7 +301,7 @@ out: /** * batadv_send_skb_unicast() - encapsulate and send an skb via unicast - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: payload to send * @packet_type: the batman unicast packet type to use * @packet_subtype: the unicast 4addr packet subtype (only relevant for unicast @@ -384,7 +371,7 @@ out: /** * batadv_send_skb_via_tt_generic() - send an skb via TT lookup - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: payload to send * @packet_type: the batman unicast packet type to use * @packet_subtype: the unicast 4addr packet subtype (only relevant for unicast @@ -430,7 +417,7 @@ int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv, /** * batadv_send_skb_via_gw() - send an skb via gateway lookup - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: payload to send * @vid: the vid to be used to search the translation table * @@ -532,7 +519,7 @@ batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming, forw_packet->queue_left = queue_left; forw_packet->if_incoming = if_incoming; forw_packet->if_outgoing = if_outgoing; - forw_packet->num_packets = 0; + forw_packet->num_packets = 1; return forw_packet; @@ -695,7 +682,7 @@ static void batadv_forw_packet_queue(struct batadv_forw_packet *forw_packet, /** * batadv_forw_packet_bcast_queue() - try to queue a broadcast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @forw_packet: the forwarding packet to queue * @send_time: timestamp (jiffies) when the packet is to be sent * @@ -714,7 +701,7 @@ batadv_forw_packet_bcast_queue(struct batadv_priv *bat_priv, /** * batadv_forw_packet_ogmv1_queue() - try to queue an OGMv1 packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @forw_packet: the forwarding packet to queue * @send_time: timestamp (jiffies) when the packet is to be sent * @@ -732,7 +719,7 @@ void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv, /** * batadv_forw_bcast_packet_to_list() - queue broadcast packet for transmissions - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: broadcast packet to add * @delay: number of jiffies to wait before sending * @own_packet: true if it is a self-generated broadcast packet @@ -787,7 +774,7 @@ err: /** * batadv_forw_bcast_packet_if() - forward and queue a broadcast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: broadcast packet to add * @delay: number of jiffies to wait before sending * @own_packet: true if it is a self-generated broadcast packet @@ -838,7 +825,7 @@ static int batadv_forw_bcast_packet_if(struct batadv_priv *bat_priv, /** * batadv_send_no_broadcast() - check whether (re)broadcast is necessary - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: broadcast packet to check * @own_packet: true if it is a self-generated broadcast packet * @if_out: the outgoing interface checked and considered for (re)broadcast @@ -900,7 +887,7 @@ static bool batadv_send_no_broadcast(struct batadv_priv *bat_priv, /** * __batadv_forw_bcast_packet() - forward and queue a broadcast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: broadcast packet to add * @delay: number of jiffies to wait before sending * @own_packet: true if it is a self-generated broadcast packet @@ -922,6 +909,7 @@ static int __batadv_forw_bcast_packet(struct batadv_priv *bat_priv, { struct batadv_hard_iface *hard_iface; struct batadv_hard_iface *primary_if; + struct list_head *iter; int ret = NETDEV_TX_OK; primary_if = batadv_primary_if_get_selected(bat_priv); @@ -929,10 +917,7 @@ static int __batadv_forw_bcast_packet(struct batadv_priv *bat_priv, return NETDEV_TX_BUSY; rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != bat_priv->soft_iface) - continue; - + netdev_for_each_lower_private_rcu(bat_priv->mesh_iface, hard_iface, iter) { if (!kref_get_unless_zero(&hard_iface->refcount)) continue; @@ -958,7 +943,7 @@ static int __batadv_forw_bcast_packet(struct batadv_priv *bat_priv, /** * batadv_forw_bcast_packet() - forward and queue a broadcast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: broadcast packet to add * @delay: number of jiffies to wait before sending * @own_packet: true if it is a self-generated broadcast packet @@ -979,7 +964,7 @@ int batadv_forw_bcast_packet(struct batadv_priv *bat_priv, /** * batadv_send_bcast_packet() - send and queue a broadcast packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: broadcast packet to add * @delay: number of jiffies to wait before sending * @own_packet: true if it is a self-generated broadcast packet @@ -1060,7 +1045,7 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work) delayed_work = to_delayed_work(work); forw_packet = container_of(delayed_work, struct batadv_forw_packet, delayed_work); - bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface); + bat_priv = netdev_priv(forw_packet->if_incoming->mesh_iface); if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_DEACTIVATING) { dropped = true; @@ -1095,7 +1080,7 @@ out: /** * batadv_purge_outstanding_packets() - stop/purge scheduled bcast/OGMv1 packets - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @hard_iface: the hard interface to cancel and purge bcast/ogm packets on * * This method cancels and purges any broadcast and OGMv1 packet on the given diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h index 08af251b765c..3415afec4a0c 100644 --- a/net/batman-adv/send.h +++ b/net/batman-adv/send.h @@ -68,7 +68,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb, /** * batadv_send_skb_via_tt() - send an skb via TT lookup - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the payload to send * @dst_hint: can be used to override the destination contained in the skb * @vid: the vid to be used to search the translation table @@ -89,7 +89,7 @@ static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv, /** * batadv_send_skb_via_tt_4addr() - send an skb via TT lookup - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the payload to send * @packet_subtype: the unicast 4addr packet subtype to use * @dst_hint: can be used to override the destination contained in the skb diff --git a/net/batman-adv/soft-interface.h b/net/batman-adv/soft-interface.h deleted file mode 100644 index 9f2003f1a497..000000000000 --- a/net/batman-adv/soft-interface.h +++ /dev/null @@ -1,42 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#ifndef _NET_BATMAN_ADV_SOFT_INTERFACE_H_ -#define _NET_BATMAN_ADV_SOFT_INTERFACE_H_ - -#include "main.h" - -#include <linux/kref.h> -#include <linux/netdevice.h> -#include <linux/skbuff.h> -#include <linux/types.h> -#include <net/rtnetlink.h> - -int batadv_skb_head_push(struct sk_buff *skb, unsigned int len); -void batadv_interface_rx(struct net_device *soft_iface, - struct sk_buff *skb, int hdr_size, - struct batadv_orig_node *orig_node); -bool batadv_softif_is_valid(const struct net_device *net_dev); -extern struct rtnl_link_ops batadv_link_ops; -int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid); -void batadv_softif_vlan_release(struct kref *ref); -struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, - unsigned short vid); - -/** - * batadv_softif_vlan_put() - decrease the vlan object refcounter and - * possibly release it - * @vlan: the vlan object to release - */ -static inline void batadv_softif_vlan_put(struct batadv_softif_vlan *vlan) -{ - if (!vlan) - return; - - kref_put(&vlan->refcount, batadv_softif_vlan_release); -} - -#endif /* _NET_BATMAN_ADV_SOFT_INTERFACE_H_ */ diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c index 7f3dd3c393e0..350b149e48be 100644 --- a/net/batman-adv/tp_meter.c +++ b/net/batman-adv/tp_meter.c @@ -206,7 +206,7 @@ static void batadv_tp_update_rto(struct batadv_tp_vars *tp_vars, * batadv_tp_batctl_notify() - send client status result to client * @reason: reason for tp meter session stop * @dst: destination of tp_meter session - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @start_time: start of transmission in jiffies * @total_sent: bytes acked to the receiver * @cookie: cookie of tp_meter session @@ -238,7 +238,7 @@ static void batadv_tp_batctl_notify(enum batadv_tp_meter_reason reason, * batadv_tp_batctl_error_notify() - send client error result to client * @reason: reason for tp meter session stop * @dst: destination of tp_meter session - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @cookie: cookie of tp_meter session */ static void batadv_tp_batctl_error_notify(enum batadv_tp_meter_reason reason, @@ -251,7 +251,7 @@ static void batadv_tp_batctl_error_notify(enum batadv_tp_meter_reason reason, /** * batadv_tp_list_find() - find a tp_vars object in the global list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @dst: the other endpoint MAC address to look for * * Look for a tp_vars object matching dst as end_point and return it after @@ -287,7 +287,7 @@ static struct batadv_tp_vars *batadv_tp_list_find(struct batadv_priv *bat_priv, /** * batadv_tp_list_find_session() - find tp_vars session object in the global * list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @dst: the other endpoint MAC address to look for * @session: session identifier * @@ -366,7 +366,7 @@ static void batadv_tp_vars_put(struct batadv_tp_vars *tp_vars) /** * batadv_tp_sender_cleanup() - cleanup sender data and drop and timer - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tp_vars: the private data of the current TP meter session to cleanup */ static void batadv_tp_sender_cleanup(struct batadv_priv *bat_priv, @@ -384,19 +384,19 @@ static void batadv_tp_sender_cleanup(struct batadv_priv *bat_priv, atomic_dec(&tp_vars->bat_priv->tp_num); /* kill the timer and remove its reference */ - del_timer_sync(&tp_vars->timer); + timer_delete_sync(&tp_vars->timer); /* the worker might have rearmed itself therefore we kill it again. Note * that if the worker should run again before invoking the following - * del_timer(), it would not re-arm itself once again because the status + * timer_delete(), it would not re-arm itself once again because the status * is OFF now */ - del_timer(&tp_vars->timer); + timer_delete(&tp_vars->timer); batadv_tp_vars_put(tp_vars); } /** * batadv_tp_sender_end() - print info about ended session and inform client - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tp_vars: the private data of the current TP meter session */ static void batadv_tp_sender_end(struct batadv_priv *bat_priv, @@ -485,7 +485,7 @@ static void batadv_tp_reset_sender_timer(struct batadv_tp_vars *tp_vars) */ static void batadv_tp_sender_timeout(struct timer_list *t) { - struct batadv_tp_vars *tp_vars = from_timer(tp_vars, t, timer); + struct batadv_tp_vars *tp_vars = timer_container_of(tp_vars, t, timer); struct batadv_priv *bat_priv = tp_vars->bat_priv; if (atomic_read(&tp_vars->sending) == 0) @@ -619,7 +619,7 @@ static int batadv_tp_send_msg(struct batadv_tp_vars *tp_vars, const u8 *src, /** * batadv_tp_recv_ack() - ACK receiving function - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the buffer containing the received packet * * Process a received TP ACK packet @@ -832,7 +832,7 @@ static int batadv_tp_send(void *arg) } /* assume that all the hard_interfaces have a correctly - * configured MTU, so use the soft_iface MTU as MSS. + * configured MTU, so use the mesh_iface MTU as MSS. * This might not be true and in that case the fragmentation * should be used. * Now, try to send the packet as it is @@ -927,7 +927,7 @@ static void batadv_tp_start_kthread(struct batadv_tp_vars *tp_vars) /** * batadv_tp_start() - start a new tp meter session - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @dst: the receiver MAC address * @test_length: test length in milliseconds * @cookie: session cookie @@ -993,7 +993,7 @@ void batadv_tp_start(struct batadv_priv *bat_priv, const u8 *dst, /* initialise the CWND to 3*MSS (Section 3.1 in RFC5681). * For batman-adv the MSS is the size of the payload received by the - * soft_interface, hence its MTU + * mesh_interface, hence its MTU */ tp_vars->cwnd = BATADV_TP_PLEN * 3; /* at the beginning initialise the SS threshold to the biggest possible @@ -1052,7 +1052,7 @@ void batadv_tp_start(struct batadv_priv *bat_priv, const u8 *dst, /** * batadv_tp_stop() - stop currently running tp meter session - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @dst: the receiver MAC address * @return_value: reason for tp meter session stop */ @@ -1101,7 +1101,7 @@ static void batadv_tp_reset_receiver_timer(struct batadv_tp_vars *tp_vars) */ static void batadv_tp_receiver_shutdown(struct timer_list *t) { - struct batadv_tp_vars *tp_vars = from_timer(tp_vars, t, timer); + struct batadv_tp_vars *tp_vars = timer_container_of(tp_vars, t, timer); struct batadv_tp_unacked *un, *safe; struct batadv_priv *bat_priv; @@ -1141,7 +1141,7 @@ static void batadv_tp_receiver_shutdown(struct timer_list *t) /** * batadv_tp_send_ack() - send an ACK packet - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @dst: the mac address of the destination originator * @seq: the sequence number to ACK * @timestamp: the timestamp to echo back in the ACK @@ -1320,7 +1320,7 @@ static void batadv_tp_ack_unordered(struct batadv_tp_vars *tp_vars) /** * batadv_tp_init_recv() - return matching or create new receiver tp_vars - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @icmp: received icmp tp msg * * Return: corresponding tp_vars or NULL on errors @@ -1373,7 +1373,7 @@ out_unlock: /** * batadv_tp_recv_msg() - process a single data message - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the buffer containing the received packet * * Process a received TP MSG packet @@ -1457,7 +1457,7 @@ out: /** * batadv_tp_meter_recv() - main TP Meter receiving function - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @skb: the buffer containing the received packet */ void batadv_tp_meter_recv(struct batadv_priv *bat_priv, struct sk_buff *skb) diff --git a/net/batman-adv/trace.h b/net/batman-adv/trace.h index 6b816cf1a953..7da692ec38e9 100644 --- a/net/batman-adv/trace.h +++ b/net/batman-adv/trace.h @@ -34,7 +34,7 @@ TRACE_EVENT(batadv_dbg, TP_ARGS(bat_priv, vaf), TP_STRUCT__entry( - __string(device, bat_priv->soft_iface->name) + __string(device, bat_priv->mesh_iface->name) __string(driver, KBUILD_MODNAME) __vstring(msg, vaf->fmt, vaf->va) ), diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 2243cec18ecc..6e95e883c2bf 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -14,7 +14,8 @@ #include <linux/cache.h> #include <linux/compiler.h> #include <linux/container_of.h> -#include <linux/crc32c.h> +#include <linux/crc32.h> +#include <linux/err.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -28,6 +29,7 @@ #include <linux/net.h> #include <linux/netdevice.h> #include <linux/netlink.h> +#include <linux/overflow.h> #include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/skbuff.h> @@ -38,7 +40,6 @@ #include <linux/workqueue.h> #include <net/genetlink.h> #include <net/netlink.h> -#include <net/sock.h> #include <uapi/linux/batadv_packet.h> #include <uapi/linux/batman_adv.h> @@ -46,9 +47,9 @@ #include "hard-interface.h" #include "hash.h" #include "log.h" +#include "mesh-interface.h" #include "netlink.h" #include "originator.h" -#include "soft-interface.h" #include "tvlv.h" static struct kmem_cache *batadv_tl_cache __read_mostly; @@ -160,7 +161,7 @@ batadv_tt_hash_find(struct batadv_hashtable *hash, const u8 *addr, /** * batadv_tt_local_hash_find() - search the local table for a given client - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the mac address of the client to look for * @vid: VLAN identifier * @@ -185,7 +186,7 @@ batadv_tt_local_hash_find(struct batadv_priv *bat_priv, const u8 *addr, /** * batadv_tt_global_hash_find() - search the global table for a given client - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the mac address of the client to look for * @vid: VLAN identifier * @@ -209,23 +210,9 @@ batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr, } /** - * batadv_tt_local_entry_free_rcu() - free the tt_local_entry - * @rcu: rcu pointer of the tt_local_entry - */ -static void batadv_tt_local_entry_free_rcu(struct rcu_head *rcu) -{ - struct batadv_tt_local_entry *tt_local_entry; - - tt_local_entry = container_of(rcu, struct batadv_tt_local_entry, - common.rcu); - - kmem_cache_free(batadv_tl_cache, tt_local_entry); -} - -/** * batadv_tt_local_entry_release() - release tt_local_entry from lists and queue * for free after rcu grace period - * @ref: kref pointer of the nc_node + * @ref: kref pointer of the batadv_tt_local_entry */ static void batadv_tt_local_entry_release(struct kref *ref) { @@ -234,9 +221,9 @@ static void batadv_tt_local_entry_release(struct kref *ref) tt_local_entry = container_of(ref, struct batadv_tt_local_entry, common.refcount); - batadv_softif_vlan_put(tt_local_entry->vlan); + batadv_meshif_vlan_put(tt_local_entry->vlan); - call_rcu(&tt_local_entry->common.rcu, batadv_tt_local_entry_free_rcu); + kfree_rcu(tt_local_entry, common.rcu); } /** @@ -255,23 +242,9 @@ batadv_tt_local_entry_put(struct batadv_tt_local_entry *tt_local_entry) } /** - * batadv_tt_global_entry_free_rcu() - free the tt_global_entry - * @rcu: rcu pointer of the tt_global_entry - */ -static void batadv_tt_global_entry_free_rcu(struct rcu_head *rcu) -{ - struct batadv_tt_global_entry *tt_global_entry; - - tt_global_entry = container_of(rcu, struct batadv_tt_global_entry, - common.rcu); - - kmem_cache_free(batadv_tg_cache, tt_global_entry); -} - -/** * batadv_tt_global_entry_release() - release tt_global_entry from lists and * queue for free after rcu grace period - * @ref: kref pointer of the nc_node + * @ref: kref pointer of the batadv_tt_global_entry */ void batadv_tt_global_entry_release(struct kref *ref) { @@ -282,12 +255,12 @@ void batadv_tt_global_entry_release(struct kref *ref) batadv_tt_global_del_orig_list(tt_global_entry); - call_rcu(&tt_global_entry->common.rcu, batadv_tt_global_entry_free_rcu); + kfree_rcu(tt_global_entry, common.rcu); } /** * batadv_tt_global_hash_count() - count the number of orig entries - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the mac address of the client to count entries for * @vid: VLAN identifier * @@ -313,28 +286,28 @@ int batadv_tt_global_hash_count(struct batadv_priv *bat_priv, /** * batadv_tt_local_size_mod() - change the size by v of the local table * identified by vid - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @vid: the VLAN identifier of the sub-table to change * @v: the amount to sum to the local table size */ static void batadv_tt_local_size_mod(struct batadv_priv *bat_priv, unsigned short vid, int v) { - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; - vlan = batadv_softif_vlan_get(bat_priv, vid); + vlan = batadv_meshif_vlan_get(bat_priv, vid); if (!vlan) return; atomic_add(v, &vlan->tt.num_entries); - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); } /** * batadv_tt_local_size_inc() - increase by one the local table size for the * given vid - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @vid: the VLAN identifier */ static void batadv_tt_local_size_inc(struct batadv_priv *bat_priv, @@ -346,7 +319,7 @@ static void batadv_tt_local_size_inc(struct batadv_priv *bat_priv, /** * batadv_tt_local_size_dec() - decrease by one the local table size for the * given vid - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @vid: the VLAN identifier */ static void batadv_tt_local_size_dec(struct batadv_priv *bat_priv, @@ -408,19 +381,6 @@ static void batadv_tt_global_size_dec(struct batadv_orig_node *orig_node, } /** - * batadv_tt_orig_list_entry_free_rcu() - free the orig_entry - * @rcu: rcu pointer of the orig_entry - */ -static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu) -{ - struct batadv_tt_orig_list_entry *orig_entry; - - orig_entry = container_of(rcu, struct batadv_tt_orig_list_entry, rcu); - - kmem_cache_free(batadv_tt_orig_cache, orig_entry); -} - -/** * batadv_tt_orig_list_entry_release() - release tt orig entry from lists and * queue for free after rcu grace period * @ref: kref pointer of the tt orig entry @@ -433,7 +393,7 @@ static void batadv_tt_orig_list_entry_release(struct kref *ref) refcount); batadv_orig_node_put(orig_entry->orig_node); - call_rcu(&orig_entry->rcu, batadv_tt_orig_list_entry_free_rcu); + kfree_rcu(orig_entry, rcu); } /** @@ -452,7 +412,7 @@ batadv_tt_orig_list_entry_put(struct batadv_tt_orig_list_entry *orig_entry) /** * batadv_tt_local_event() - store a local TT event (ADD/DEL) - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tt_local_entry: the TT entry involved in the event * @event_flags: flags to store in the event structure */ @@ -463,8 +423,8 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv, struct batadv_tt_change_node *tt_change_node, *entry, *safe; struct batadv_tt_common_entry *common = &tt_local_entry->common; u8 flags = common->flags | event_flags; - bool event_removed = false; bool del_op_requested, del_op_entry; + size_t changes; tt_change_node = kmem_cache_alloc(batadv_tt_change_cache, GFP_ATOMIC); if (!tt_change_node) @@ -478,51 +438,45 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv, del_op_requested = flags & BATADV_TT_CLIENT_DEL; - /* check for ADD+DEL or DEL+ADD events */ + /* check for ADD+DEL, DEL+ADD, ADD+ADD or DEL+DEL events */ spin_lock_bh(&bat_priv->tt.changes_list_lock); + changes = READ_ONCE(bat_priv->tt.local_changes); list_for_each_entry_safe(entry, safe, &bat_priv->tt.changes_list, list) { if (!batadv_compare_eth(entry->change.addr, common->addr)) continue; - /* DEL+ADD in the same orig interval have no effect and can be - * removed to avoid silly behaviour on the receiver side. The - * other way around (ADD+DEL) can happen in case of roaming of - * a client still in the NEW state. Roaming of NEW clients is - * now possible due to automatically recognition of "temporary" - * clients - */ del_op_entry = entry->change.flags & BATADV_TT_CLIENT_DEL; - if (!del_op_requested && del_op_entry) - goto del; - if (del_op_requested && !del_op_entry) - goto del; - - /* this is a second add in the same originator interval. It - * means that flags have been changed: update them! - */ - if (!del_op_requested && !del_op_entry) + if (del_op_requested != del_op_entry) { + /* DEL+ADD in the same orig interval have no effect and + * can be removed to avoid silly behaviour on the + * receiver side. The other way around (ADD+DEL) can + * happen in case of roaming of a client still in the + * NEW state. Roaming of NEW clients is now possible due + * to automatically recognition of "temporary" clients + */ + list_del(&entry->list); + kmem_cache_free(batadv_tt_change_cache, entry); + changes--; + } else { + /* this is a second add or del in the same originator + * interval. It could mean that flags have been changed + * (e.g. double add): update them + */ entry->change.flags = flags; + } - continue; -del: - list_del(&entry->list); - kmem_cache_free(batadv_tt_change_cache, entry); kmem_cache_free(batadv_tt_change_cache, tt_change_node); - event_removed = true; - goto unlock; + goto update_changes; } /* track the change in the OGMinterval list */ list_add_tail(&tt_change_node->list, &bat_priv->tt.changes_list); + changes++; -unlock: +update_changes: + WRITE_ONCE(bat_priv->tt.local_changes, changes); spin_unlock_bh(&bat_priv->tt.changes_list_lock); - - if (event_removed) - atomic_dec(&bat_priv->tt.local_changes); - else - atomic_inc(&bat_priv->tt.local_changes); } /** @@ -550,7 +504,7 @@ static u16 batadv_tt_entries(u16 tt_len) /** * batadv_tt_local_table_transmit_size() - calculates the local translation * table size when transmitted over the air - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: local translation table size in bytes. */ @@ -558,11 +512,11 @@ static int batadv_tt_local_table_transmit_size(struct batadv_priv *bat_priv) { u16 num_vlan = 0; u16 tt_local_entries = 0; - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; int hdr_size; rcu_read_lock(); - hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) { + hlist_for_each_entry_rcu(vlan, &bat_priv->meshif_vlan_list, list) { num_vlan++; tt_local_entries += atomic_read(&vlan->tt.num_entries); } @@ -622,7 +576,7 @@ static void batadv_tt_global_free(struct batadv_priv *bat_priv, /** * batadv_tt_local_add() - add a new client to the local table or update an * existing client - * @soft_iface: netdev struct of the mesh interface + * @mesh_iface: netdev struct of the mesh interface * @addr: the mac address of the client to add * @vid: VLAN identifier * @ifindex: index of the interface where the client is connected to (useful to @@ -632,14 +586,14 @@ static void batadv_tt_global_free(struct batadv_priv *bat_priv, * * Return: true if the client was successfully added, false otherwise. */ -bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr, +bool batadv_tt_local_add(struct net_device *mesh_iface, const u8 *addr, unsigned short vid, int ifindex, u32 mark) { - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); struct batadv_tt_local_entry *tt_local; struct batadv_tt_global_entry *tt_global = NULL; - struct net *net = dev_net(soft_iface); - struct batadv_softif_vlan *vlan; + struct net *net = dev_net(mesh_iface); + struct batadv_meshif_vlan *vlan; struct net_device *in_dev = NULL; struct batadv_hard_iface *in_hardif = NULL; struct hlist_head *head; @@ -696,7 +650,7 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr, table_size += batadv_tt_len(1); packet_size_max = atomic_read(&bat_priv->packet_size_max); if (table_size > packet_size_max) { - net_ratelimited_function(batadv_info, soft_iface, + net_ratelimited_function(batadv_info, mesh_iface, "Local translation table size (%i) exceeds maximum packet size (%i); Ignoring new local tt entry: %pM\n", table_size, packet_size_max, addr); goto out; @@ -707,9 +661,9 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr, goto out; /* increase the refcounter of the related vlan */ - vlan = batadv_softif_vlan_get(bat_priv, vid); + vlan = batadv_meshif_vlan_get(bat_priv, vid); if (!vlan) { - net_ratelimited_function(batadv_info, soft_iface, + net_ratelimited_function(batadv_info, mesh_iface, "adding TT local entry %pM to non-existent VLAN %d\n", addr, batadv_print_vid(vid)); kmem_cache_free(batadv_tl_cache, tt_local); @@ -739,7 +693,7 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr, /* the batman interface mac and multicast addresses should never be * purged */ - if (batadv_compare_eth(addr, soft_iface->dev_addr) || + if (batadv_compare_eth(addr, mesh_iface->dev_addr) || is_multicast_ether_addr(addr)) tt_local->common.flags |= BATADV_TT_CLIENT_NOPURGE; @@ -856,8 +810,7 @@ batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node, num_entries += atomic_read(&vlan->tt.num_entries); } - change_offset = sizeof(**tt_data); - change_offset += num_vlan * sizeof(*tt_vlan); + change_offset = struct_size(*tt_data, vlan_data, num_vlan); /* if tt_len is negative, allocate the space needed by the full table */ if (*tt_len < 0) @@ -876,7 +829,7 @@ batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node, (*tt_data)->ttvn = atomic_read(&orig_node->last_ttvn); (*tt_data)->num_vlan = htons(num_vlan); - tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(*tt_data + 1); + tt_vlan = (*tt_data)->vlan_data; hlist_for_each_entry(vlan, &orig_node->vlan_list, list) { tt_vlan->vid = htons(vlan->vid); tt_vlan->crc = htonl(vlan->tt.crc); @@ -896,7 +849,7 @@ out: /** * batadv_tt_prepare_tvlv_local_data() - allocate and prepare the TT TVLV for * this node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tt_data: uninitialised pointer to the address of the TVLV buffer * @tt_change: uninitialised pointer to the address of the area where the TT * changes can be stored @@ -918,7 +871,7 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv, s32 *tt_len) { struct batadv_tvlv_tt_vlan_data *tt_vlan; - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; u16 num_vlan = 0; u16 vlan_entries = 0; u16 total_entries = 0; @@ -926,8 +879,8 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv, u8 *tt_change_ptr; int change_offset; - spin_lock_bh(&bat_priv->softif_vlan_list_lock); - hlist_for_each_entry(vlan, &bat_priv->softif_vlan_list, list) { + spin_lock_bh(&bat_priv->meshif_vlan_list_lock); + hlist_for_each_entry(vlan, &bat_priv->meshif_vlan_list, list) { vlan_entries = atomic_read(&vlan->tt.num_entries); if (vlan_entries < 1) continue; @@ -936,8 +889,7 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv, total_entries += vlan_entries; } - change_offset = sizeof(**tt_data); - change_offset += num_vlan * sizeof(*tt_vlan); + change_offset = struct_size(*tt_data, vlan_data, num_vlan); /* if tt_len is negative, allocate the space needed by the full table */ if (*tt_len < 0) @@ -956,8 +908,8 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv, (*tt_data)->ttvn = atomic_read(&bat_priv->tt.vn); (*tt_data)->num_vlan = htons(num_vlan); - tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(*tt_data + 1); - hlist_for_each_entry(vlan, &bat_priv->softif_vlan_list, list) { + tt_vlan = (*tt_data)->vlan_data; + hlist_for_each_entry(vlan, &bat_priv->meshif_vlan_list, list) { vlan_entries = atomic_read(&vlan->tt.num_entries); if (vlan_entries < 1) continue; @@ -973,14 +925,14 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv, *tt_change = (struct batadv_tvlv_tt_change *)tt_change_ptr; out: - spin_unlock_bh(&bat_priv->softif_vlan_list_lock); + spin_unlock_bh(&bat_priv->meshif_vlan_list_lock); return tvlv_len; } /** * batadv_tt_tvlv_container_update() - update the translation table tvlv * container after local tt changes have been committed - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_tt_tvlv_container_update(struct batadv_priv *bat_priv) { @@ -990,16 +942,25 @@ static void batadv_tt_tvlv_container_update(struct batadv_priv *bat_priv) int tt_diff_len, tt_change_len = 0; int tt_diff_entries_num = 0; int tt_diff_entries_count = 0; + bool drop_changes = false; + size_t tt_extra_len = 0; u16 tvlv_len; - tt_diff_entries_num = atomic_read(&bat_priv->tt.local_changes); + tt_diff_entries_num = READ_ONCE(bat_priv->tt.local_changes); tt_diff_len = batadv_tt_len(tt_diff_entries_num); /* if we have too many changes for one packet don't send any - * and wait for the tt table request which will be fragmented + * and wait for the tt table request so we can reply with the full + * (fragmented) table. + * + * The local change history should still be cleaned up so the next + * TT round can start again with a clean state. */ - if (tt_diff_len > bat_priv->soft_iface->mtu) + if (tt_diff_len > bat_priv->mesh_iface->mtu) { tt_diff_len = 0; + tt_diff_entries_num = 0; + drop_changes = true; + } tvlv_len = batadv_tt_prepare_tvlv_local_data(bat_priv, &tt_data, &tt_change, &tt_diff_len); @@ -1008,11 +969,11 @@ static void batadv_tt_tvlv_container_update(struct batadv_priv *bat_priv) tt_data->flags = BATADV_TT_OGM_DIFF; - if (tt_diff_len == 0) + if (!drop_changes && tt_diff_len == 0) goto container_register; spin_lock_bh(&bat_priv->tt.changes_list_lock); - atomic_set(&bat_priv->tt.local_changes, 0); + WRITE_ONCE(bat_priv->tt.local_changes, 0); list_for_each_entry_safe(entry, safe, &bat_priv->tt.changes_list, list) { @@ -1027,6 +988,9 @@ static void batadv_tt_tvlv_container_update(struct batadv_priv *bat_priv) } spin_unlock_bh(&bat_priv->tt.changes_list_lock); + tt_extra_len = batadv_tt_len(tt_diff_entries_num - + tt_diff_entries_count); + /* Keep the buffer for possible tt_request */ spin_lock_bh(&bat_priv->tt.last_changeset_lock); kfree(bat_priv->tt.last_changeset); @@ -1035,6 +999,7 @@ static void batadv_tt_tvlv_container_update(struct batadv_priv *bat_priv) tt_change_len = batadv_tt_len(tt_diff_entries_count); /* check whether this new OGM has no changes due to size problems */ if (tt_diff_entries_count > 0) { + tt_diff_len -= tt_extra_len; /* if kmalloc() fails we will reply with the full table * instead of providing the diff */ @@ -1047,6 +1012,8 @@ static void batadv_tt_tvlv_container_update(struct batadv_priv *bat_priv) } spin_unlock_bh(&bat_priv->tt.last_changeset_lock); + /* Remove extra packet space for OGM */ + tvlv_len -= tt_extra_len; container_register: batadv_tvlv_container_register(bat_priv, BATADV_TVLV_TT, 1, tt_data, tvlv_len); @@ -1058,7 +1025,7 @@ container_register: * @msg :Netlink message to dump into * @portid: Port making netlink request * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @common: tt local & tt global common data * * Return: Error code, or 0 on success @@ -1070,7 +1037,7 @@ batadv_tt_local_dump_entry(struct sk_buff *msg, u32 portid, struct batadv_tt_common_entry *common) { void *hdr; - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; struct batadv_tt_local_entry *local; unsigned int last_seen_msecs; u32 crc; @@ -1078,13 +1045,13 @@ batadv_tt_local_dump_entry(struct sk_buff *msg, u32 portid, local = container_of(common, struct batadv_tt_local_entry, common); last_seen_msecs = jiffies_to_msecs(jiffies - local->last_seen); - vlan = batadv_softif_vlan_get(bat_priv, common->vid); + vlan = batadv_meshif_vlan_get(bat_priv, common->vid); if (!vlan) return 0; crc = vlan->tt.crc; - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); hdr = genlmsg_put(msg, portid, cb->nlh->nlmsg_seq, &batadv_netlink_family, NLM_F_MULTI, @@ -1117,7 +1084,7 @@ batadv_tt_local_dump_entry(struct sk_buff *msg, u32 portid, * @msg: Netlink message to dump into * @portid: Port making netlink request * @cb: Control block containing additional options - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @hash: hash to dump * @bucket: bucket index to dump * @idx_s: Number of entries to skip @@ -1163,28 +1130,20 @@ batadv_tt_local_dump_bucket(struct sk_buff *msg, u32 portid, */ int batadv_tt_local_dump(struct sk_buff *msg, struct netlink_callback *cb) { - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; + struct net_device *mesh_iface; struct batadv_priv *bat_priv; struct batadv_hard_iface *primary_if = NULL; struct batadv_hashtable *hash; int ret; - int ifindex; int bucket = cb->args[0]; int idx = cb->args[1]; int portid = NETLINK_CB(cb->skb).portid; - ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } - - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); primary_if = batadv_primary_if_get_selected(bat_priv); if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { @@ -1206,7 +1165,7 @@ int batadv_tt_local_dump(struct sk_buff *msg, struct netlink_callback *cb) out: batadv_hardif_put(primary_if); - dev_put(soft_iface); + dev_put(mesh_iface); cb->args[0] = bucket; cb->args[1] = idx; @@ -1235,7 +1194,7 @@ batadv_tt_local_set_pending(struct batadv_priv *bat_priv, /** * batadv_tt_local_remove() - logically remove an entry from the local table - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the MAC address of the client to remove * @vid: VLAN identifier * @message: message to append to the log on deletion @@ -1300,7 +1259,7 @@ out: /** * batadv_tt_local_purge_list() - purge inactive tt local entries - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @head: pointer to the list containing the local tt entries * @timeout: parameter deciding whether a given tt local entry is considered * inactive or not @@ -1335,7 +1294,7 @@ static void batadv_tt_local_purge_list(struct batadv_priv *bat_priv, /** * batadv_tt_local_purge() - purge inactive tt local entries - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @timeout: parameter deciding whether a given tt local entry is considered * inactive or not */ @@ -1422,7 +1381,7 @@ static void batadv_tt_changes_list_free(struct batadv_priv *bat_priv) kmem_cache_free(batadv_tt_change_cache, entry); } - atomic_set(&bat_priv->tt.local_changes, 0); + WRITE_ONCE(bat_priv->tt.local_changes, 0); spin_unlock_bh(&bat_priv->tt.changes_list_lock); } @@ -1570,7 +1529,7 @@ out: /** * batadv_tt_global_add() - add a new TT global entry or update an existing one - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: the originator announcing the client * @tt_addr: the mac address of the non-mesh client * @vid: VLAN identifier @@ -1743,7 +1702,7 @@ out: /** * batadv_transtable_best_orig() - Get best originator list entry from tt entry - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tt_global_entry: global translation table entry to be analyzed * * This function assumes the caller holds rcu_read_lock(). @@ -1850,7 +1809,7 @@ batadv_tt_global_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @common: tt local & tt global common data * @sub_s: Number of entries to skip * @@ -1895,7 +1854,7 @@ batadv_tt_global_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message - * @bat_priv: The bat priv with all the soft interface information + * @bat_priv: The bat priv with all the mesh interface information * @head: Pointer to the list containing the global tt entries * @idx_s: Number of entries to skip * @sub: Number of entries to skip @@ -1938,30 +1897,22 @@ batadv_tt_global_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq, */ int batadv_tt_global_dump(struct sk_buff *msg, struct netlink_callback *cb) { - struct net *net = sock_net(cb->skb->sk); - struct net_device *soft_iface; + struct net_device *mesh_iface; struct batadv_priv *bat_priv; struct batadv_hard_iface *primary_if = NULL; struct batadv_hashtable *hash; struct hlist_head *head; int ret; - int ifindex; int bucket = cb->args[0]; int idx = cb->args[1]; int sub = cb->args[2]; int portid = NETLINK_CB(cb->skb).portid; - ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); - if (!ifindex) - return -EINVAL; + mesh_iface = batadv_netlink_get_meshif(cb); + if (IS_ERR(mesh_iface)) + return PTR_ERR(mesh_iface); - soft_iface = dev_get_by_index(net, ifindex); - if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { - ret = -ENODEV; - goto out; - } - - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(mesh_iface); primary_if = batadv_primary_if_get_selected(bat_priv); if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { @@ -1986,7 +1937,7 @@ int batadv_tt_global_dump(struct sk_buff *msg, struct netlink_callback *cb) out: batadv_hardif_put(primary_if); - dev_put(soft_iface); + dev_put(mesh_iface); cb->args[0] = bucket; cb->args[1] = idx; @@ -2039,7 +1990,7 @@ batadv_tt_global_del_orig_list(struct batadv_tt_global_entry *tt_global_entry) /** * batadv_tt_global_del_orig_node() - remove orig_node from a global tt entry - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tt_global_entry: the global entry to remove the orig_node from * @orig_node: the originator announcing the client * @message: message to append to the log on deletion @@ -2118,7 +2069,7 @@ batadv_tt_global_del_roaming(struct batadv_priv *bat_priv, /** * batadv_tt_global_del() - remove a client from the global table - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: an originator serving this client * @addr: the mac address of the client * @vid: VLAN identifier @@ -2183,7 +2134,7 @@ out: /** * batadv_tt_global_del_orig() - remove all the TT global entries belonging to * the given originator matching the provided vid - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: the originator owning the entries to remove * @match_vid: the VLAN identifier to match. If negative all the entries will be * removed @@ -2354,7 +2305,7 @@ _batadv_is_ap_isolated(struct batadv_tt_local_entry *tt_local_entry, /** * batadv_transtable_search() - get the mesh destination for a given client - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @src: mac address of the source client * @addr: mac address of the destination client * @vid: VLAN identifier @@ -2413,7 +2364,7 @@ out: /** * batadv_tt_global_crc() - calculates the checksum of the local table belonging * to the given orig_node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: originator for which the CRC should be computed * @vid: VLAN identifier for which the CRC32 has to be computed * @@ -2507,7 +2458,7 @@ static u32 batadv_tt_global_crc(struct batadv_priv *bat_priv, /** * batadv_tt_local_crc() - calculates the checksum of the local table - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @vid: VLAN identifier for which the CRC32 has to be computed * * For details about the computation, please refer to the documentation for @@ -2642,7 +2593,7 @@ static void batadv_tt_req_purge(struct batadv_priv *bat_priv) /** * batadv_tt_req_node_new() - search and possibly create a tt_req_node object - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node this request is being issued for * * Return: the pointer to the new tt_req_node struct if no request @@ -2738,7 +2689,7 @@ static bool batadv_tt_global_valid(const void *entry_ptr, /** * batadv_tt_tvlv_generate() - fill the tvlv buff with the tt entries from the * specified tt hash - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @hash: hash table containing the tt entries * @tt_len: expected tvlv tt data buffer length in number of bytes * @tvlv_buff: pointer to the buffer to fill with the TT data @@ -2747,14 +2698,16 @@ static bool batadv_tt_global_valid(const void *entry_ptr, * * Fills the tvlv buff with the tt entries from the specified hash. If valid_cb * is not provided then this becomes a no-op. + * + * Return: Remaining unused length in tvlv_buff. */ -static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv, - struct batadv_hashtable *hash, - void *tvlv_buff, u16 tt_len, - bool (*valid_cb)(const void *, - const void *, - u8 *flags), - void *cb_data) +static u16 batadv_tt_tvlv_generate(struct batadv_priv *bat_priv, + struct batadv_hashtable *hash, + void *tvlv_buff, u16 tt_len, + bool (*valid_cb)(const void *, + const void *, + u8 *flags), + void *cb_data) { struct batadv_tt_common_entry *tt_common_entry; struct batadv_tvlv_tt_change *tt_change; @@ -2768,7 +2721,7 @@ static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv, tt_change = tvlv_buff; if (!valid_cb) - return; + return tt_len; rcu_read_lock(); for (i = 0; i < hash->size; i++) { @@ -2794,6 +2747,8 @@ static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv, } } rcu_read_unlock(); + + return batadv_tt_len(tt_tot - tt_num_entries); } /** @@ -2855,15 +2810,15 @@ static bool batadv_tt_global_check_crc(struct batadv_orig_node *orig_node, /** * batadv_tt_local_update_crc() - update all the local CRCs - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ static void batadv_tt_local_update_crc(struct batadv_priv *bat_priv) { - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; /* recompute the global CRC for each VLAN */ rcu_read_lock(); - hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) { + hlist_for_each_entry_rcu(vlan, &bat_priv->meshif_vlan_list, list) { vlan->tt.crc = batadv_tt_local_crc(bat_priv, vlan->vid); } rcu_read_unlock(); @@ -2871,7 +2826,7 @@ static void batadv_tt_local_update_crc(struct batadv_priv *bat_priv) /** * batadv_tt_global_update_crc() - update all the global CRCs for this orig_node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: the orig_node for which the CRCs have to be updated */ static void batadv_tt_global_update_crc(struct batadv_priv *bat_priv, @@ -2898,7 +2853,7 @@ static void batadv_tt_global_update_crc(struct batadv_priv *bat_priv, /** * batadv_send_tt_request() - send a TT Request message to a given node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @dst_orig_node: the destination of the message * @ttvn: the version number that the source of the message is looking for * @tt_vlan: pointer to the first tvlv VLAN object to request @@ -2916,7 +2871,6 @@ static bool batadv_send_tt_request(struct batadv_priv *bat_priv, { struct batadv_tvlv_tt_data *tvlv_tt_data = NULL; struct batadv_tt_req_node *tt_req_node = NULL; - struct batadv_tvlv_tt_vlan_data *tt_vlan_req; struct batadv_hard_iface *primary_if; bool ret = false; int i, size; @@ -2932,7 +2886,7 @@ static bool batadv_send_tt_request(struct batadv_priv *bat_priv, if (!tt_req_node) goto out; - size = sizeof(*tvlv_tt_data) + sizeof(*tt_vlan_req) * num_vlan; + size = struct_size(tvlv_tt_data, vlan_data, num_vlan); tvlv_tt_data = kzalloc(size, GFP_ATOMIC); if (!tvlv_tt_data) goto out; @@ -2944,12 +2898,10 @@ static bool batadv_send_tt_request(struct batadv_priv *bat_priv, /* send all the CRCs within the request. This is needed by intermediate * nodes to ensure they have the correct table before replying */ - tt_vlan_req = (struct batadv_tvlv_tt_vlan_data *)(tvlv_tt_data + 1); for (i = 0; i < num_vlan; i++) { - tt_vlan_req->vid = tt_vlan->vid; - tt_vlan_req->crc = tt_vlan->crc; + tvlv_tt_data->vlan_data[i].vid = tt_vlan->vid; + tvlv_tt_data->vlan_data[i].crc = tt_vlan->crc; - tt_vlan_req++; tt_vlan++; } @@ -2986,7 +2938,7 @@ out: /** * batadv_send_other_tt_response() - send reply to tt request concerning another * node's translation table - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tt_data: tt data containing the tt request information * @req_src: mac address of tt request sender * @req_dst: mac address of tt request recipient @@ -3001,7 +2953,6 @@ static bool batadv_send_other_tt_response(struct batadv_priv *bat_priv, struct batadv_orig_node *res_dst_orig_node = NULL; struct batadv_tvlv_tt_change *tt_change; struct batadv_tvlv_tt_data *tvlv_tt_data = NULL; - struct batadv_tvlv_tt_vlan_data *tt_vlan; bool ret = false, full_table; u8 orig_ttvn, req_ttvn; u16 tvlv_len; @@ -3024,10 +2975,9 @@ static bool batadv_send_other_tt_response(struct batadv_priv *bat_priv, orig_ttvn = (u8)atomic_read(&req_dst_orig_node->last_ttvn); req_ttvn = tt_data->ttvn; - tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(tt_data + 1); /* this node doesn't have the requested data */ if (orig_ttvn != req_ttvn || - !batadv_tt_global_check_crc(req_dst_orig_node, tt_vlan, + !batadv_tt_global_check_crc(req_dst_orig_node, tt_data->vlan_data, ntohs(tt_data->num_vlan))) goto out; @@ -3069,16 +3019,17 @@ static bool batadv_send_other_tt_response(struct batadv_priv *bat_priv, goto out; /* fill the rest of the tvlv with the real TT entries */ - batadv_tt_tvlv_generate(bat_priv, bat_priv->tt.global_hash, - tt_change, tt_len, - batadv_tt_global_valid, - req_dst_orig_node); + tvlv_len -= batadv_tt_tvlv_generate(bat_priv, + bat_priv->tt.global_hash, + tt_change, tt_len, + batadv_tt_global_valid, + req_dst_orig_node); } /* Don't send the response, if larger than fragmented packet. */ tt_len = sizeof(struct batadv_unicast_tvlv_packet) + tvlv_len; if (tt_len > atomic_read(&bat_priv->packet_size_max)) { - net_ratelimited_function(batadv_info, bat_priv->soft_iface, + net_ratelimited_function(batadv_info, bat_priv->mesh_iface, "Ignoring TT_REQUEST from %pM; Response size exceeds max packet size.\n", res_dst_orig_node->orig); goto out; @@ -3117,7 +3068,7 @@ out: /** * batadv_send_my_tt_response() - send reply to tt request concerning this * node's translation table - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tt_data: tt data containing the tt request information * @req_src: mac address of tt request sender * @@ -3196,9 +3147,11 @@ static bool batadv_send_my_tt_response(struct batadv_priv *bat_priv, goto out; /* fill the rest of the tvlv with the real TT entries */ - batadv_tt_tvlv_generate(bat_priv, bat_priv->tt.local_hash, - tt_change, tt_len, - batadv_tt_local_valid, NULL); + tvlv_len -= batadv_tt_tvlv_generate(bat_priv, + bat_priv->tt.local_hash, + tt_change, tt_len, + batadv_tt_local_valid, + NULL); } tvlv_tt_data->flags = BATADV_TT_RESPONSE; @@ -3232,7 +3185,7 @@ out: /** * batadv_send_tt_response() - send reply to tt request - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tt_data: tt data containing the tt request information * @req_src: mac address of tt request sender * @req_dst: mac address of tt request recipient @@ -3327,7 +3280,7 @@ static void batadv_tt_update_changes(struct batadv_priv *bat_priv, /** * batadv_is_my_client() - check if a client is served by the local node - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the mac address of the client to check * @vid: VLAN identifier * @@ -3356,7 +3309,7 @@ out: /** * batadv_handle_tt_response() - process incoming tt reply - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tt_data: tt data containing the tt request information * @resp_src: mac address of tt reply sender * @num_entries: number of tt change entries appended to the tt data @@ -3370,7 +3323,6 @@ static void batadv_handle_tt_response(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node = NULL; struct batadv_tvlv_tt_change *tt_change; u8 *tvlv_ptr = (u8 *)tt_data; - u16 change_offset; batadv_dbg(BATADV_DBG_TT, bat_priv, "Received TT_RESPONSE from %pM for ttvn %d t_size: %d [%c]\n", @@ -3383,10 +3335,7 @@ static void batadv_handle_tt_response(struct batadv_priv *bat_priv, spin_lock_bh(&orig_node->tt_lock); - change_offset = sizeof(struct batadv_tvlv_tt_vlan_data); - change_offset *= ntohs(tt_data->num_vlan); - change_offset += sizeof(*tt_data); - tvlv_ptr += change_offset; + tvlv_ptr += struct_size(tt_data, vlan_data, ntohs(tt_data->num_vlan)); tt_change = (struct batadv_tvlv_tt_change *)tvlv_ptr; if (tt_data->flags & BATADV_TT_FULL_TABLE) { @@ -3448,7 +3397,7 @@ static void batadv_tt_roam_purge(struct batadv_priv *bat_priv) /** * batadv_tt_check_roam_count() - check if a client has roamed too frequently - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @client: mac address of the roaming client * * This function checks whether the client already reached the @@ -3503,7 +3452,7 @@ unlock: /** * batadv_send_roam_adv() - send a roaming advertisement message - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @client: mac address of the roaming client * @vid: VLAN identifier * @orig_node: message destination @@ -3567,8 +3516,8 @@ static void batadv_tt_purge(struct work_struct *work) } /** - * batadv_tt_free() - Free translation table of soft interface - * @bat_priv: the bat priv with all the soft interface information + * batadv_tt_free() - Free translation table of mesh interface + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_tt_free(struct batadv_priv *bat_priv) { @@ -3591,7 +3540,7 @@ void batadv_tt_free(struct batadv_priv *bat_priv) /** * batadv_tt_local_set_flags() - set or unset the specified flags on the local * table and possibly count them in the TT size - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @flags: the flag to switch * @enable: whether to set or unset the flag * @count: whether to increase the TT size by the number of changed entries @@ -3677,7 +3626,7 @@ static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv) /** * batadv_tt_local_commit_changes_nolock() - commit all pending local tt changes * which have been queued in the time since the last commit - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Caller must hold tt->commit_lock. */ @@ -3685,7 +3634,7 @@ static void batadv_tt_local_commit_changes_nolock(struct batadv_priv *bat_priv) { lockdep_assert_held(&bat_priv->tt.commit_lock); - if (atomic_read(&bat_priv->tt.local_changes) < 1) { + if (READ_ONCE(bat_priv->tt.local_changes) == 0) { if (!batadv_atomic_dec_not_zero(&bat_priv->tt.ogm_append_cnt)) batadv_tt_tvlv_container_update(bat_priv); return; @@ -3710,7 +3659,7 @@ static void batadv_tt_local_commit_changes_nolock(struct batadv_priv *bat_priv) /** * batadv_tt_local_commit_changes() - commit all pending local tt changes which * have been queued in the time since the last commit - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information */ void batadv_tt_local_commit_changes(struct batadv_priv *bat_priv) { @@ -3721,7 +3670,7 @@ void batadv_tt_local_commit_changes(struct batadv_priv *bat_priv) /** * batadv_is_ap_isolated() - Check if packet from upper layer should be dropped - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @src: source mac address of packet * @dst: destination mac address of packet * @vid: vlan id of packet @@ -3733,10 +3682,10 @@ bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, u8 *src, u8 *dst, { struct batadv_tt_local_entry *tt_local_entry; struct batadv_tt_global_entry *tt_global_entry; - struct batadv_softif_vlan *vlan; + struct batadv_meshif_vlan *vlan; bool ret = false; - vlan = batadv_softif_vlan_get(bat_priv, vid); + vlan = batadv_meshif_vlan_get(bat_priv, vid); if (!vlan) return false; @@ -3758,14 +3707,14 @@ bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, u8 *src, u8 *dst, local_entry_put: batadv_tt_local_entry_put(tt_local_entry); vlan_put: - batadv_softif_vlan_put(vlan); + batadv_meshif_vlan_put(vlan); return ret; } /** * batadv_tt_update_orig() - update global translation table with new tt * information received via ogms - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: the orig_node of the ogm * @tt_buff: pointer to the first tvlv VLAN entry * @tt_num_vlan: number of tvlv VLAN entries @@ -3849,7 +3798,7 @@ request_table: /** * batadv_tt_global_client_is_roaming() - check if a client is marked as roaming - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the mac address of the client to check * @vid: VLAN identifier * @@ -3875,7 +3824,7 @@ out: /** * batadv_tt_local_client_is_roaming() - tells whether the client is roaming - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the mac address of the local client to query * @vid: VLAN identifier * @@ -3901,7 +3850,7 @@ out: /** * batadv_tt_add_temporary_global_entry() - Add temporary entry to global TT - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig_node: orig node which the temporary entry should be associated with * @addr: mac address of the client * @vid: VLAN id of the new temporary global translation table @@ -3934,14 +3883,14 @@ bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv, /** * batadv_tt_local_resize_to_mtu() - resize the local translation table fit the * maximum packet size that can be transported through the mesh - * @soft_iface: netdev struct of the mesh interface + * @mesh_iface: netdev struct of the mesh interface * * Remove entries older than 'timeout' and half timeout if more entries need * to be removed. */ -void batadv_tt_local_resize_to_mtu(struct net_device *soft_iface) +void batadv_tt_local_resize_to_mtu(struct net_device *mesh_iface) { - struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_priv *bat_priv = netdev_priv(mesh_iface); int packet_size_max = atomic_read(&bat_priv->packet_size_max); int table_size, timeout = BATADV_TT_LOCAL_TIMEOUT / 2; bool reduced = false; @@ -3958,7 +3907,7 @@ void batadv_tt_local_resize_to_mtu(struct net_device *soft_iface) timeout /= 2; reduced = true; - net_ratelimited_function(batadv_info, soft_iface, + net_ratelimited_function(batadv_info, mesh_iface, "Forced to purge local tt entries to fit new maximum fragment MTU (%i)\n", packet_size_max); } @@ -3974,7 +3923,7 @@ void batadv_tt_local_resize_to_mtu(struct net_device *soft_iface) /** * batadv_tt_tvlv_ogm_handler_v1() - process incoming tt tvlv container - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) * @tvlv_value: tvlv buffer containing the gateway data @@ -3985,36 +3934,35 @@ static void batadv_tt_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, u8 flags, void *tvlv_value, u16 tvlv_value_len) { - struct batadv_tvlv_tt_vlan_data *tt_vlan; struct batadv_tvlv_tt_change *tt_change; struct batadv_tvlv_tt_data *tt_data; u16 num_entries, num_vlan; + size_t tt_data_sz; if (tvlv_value_len < sizeof(*tt_data)) return; tt_data = tvlv_value; - tvlv_value_len -= sizeof(*tt_data); - num_vlan = ntohs(tt_data->num_vlan); - if (tvlv_value_len < sizeof(*tt_vlan) * num_vlan) + tt_data_sz = struct_size(tt_data, vlan_data, num_vlan); + if (tvlv_value_len < tt_data_sz) return; - tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(tt_data + 1); - tt_change = (struct batadv_tvlv_tt_change *)(tt_vlan + num_vlan); - tvlv_value_len -= sizeof(*tt_vlan) * num_vlan; + tt_change = (struct batadv_tvlv_tt_change *)((void *)tt_data + + tt_data_sz); + tvlv_value_len -= tt_data_sz; num_entries = batadv_tt_entries(tvlv_value_len); - batadv_tt_update_orig(bat_priv, orig, tt_vlan, num_vlan, tt_change, - num_entries, tt_data->ttvn); + batadv_tt_update_orig(bat_priv, orig, tt_data->vlan_data, num_vlan, + tt_change, num_entries, tt_data->ttvn); } /** * batadv_tt_tvlv_unicast_handler_v1() - process incoming (unicast) tt tvlv * container - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @src: mac address of tt tvlv sender * @dst: mac address of tt tvlv recipient * @tvlv_value: tvlv buffer containing the tt data @@ -4039,8 +3987,8 @@ static int batadv_tt_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv, tt_data = tvlv_value; tvlv_value_len -= sizeof(*tt_data); - tt_vlan_len = sizeof(struct batadv_tvlv_tt_vlan_data); - tt_vlan_len *= ntohs(tt_data->num_vlan); + tt_vlan_len = flex_array_size(tt_data, vlan_data, + ntohs(tt_data->num_vlan)); if (tvlv_value_len < tt_vlan_len) return NET_RX_SUCCESS; @@ -4096,7 +4044,7 @@ static int batadv_tt_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv, /** * batadv_roam_tvlv_unicast_handler_v1() - process incoming tt roam tvlv * container - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @src: mac address of tt tvlv sender * @dst: mac address of tt tvlv recipient * @tvlv_value: tvlv buffer containing the tt data @@ -4145,7 +4093,7 @@ out: /** * batadv_tt_init() - initialise the translation table internals - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Return: 0 on success or negative error number in case of failure. */ @@ -4183,7 +4131,7 @@ int batadv_tt_init(struct batadv_priv *bat_priv) /** * batadv_tt_global_is_isolated() - check if a client is marked as isolated - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @addr: the mac address of the client * @vid: the identifier of the VLAN where this client is connected * diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h index d18740d9a22b..618d9dbca5ea 100644 --- a/net/batman-adv/translation-table.h +++ b/net/batman-adv/translation-table.h @@ -16,7 +16,7 @@ #include <linux/types.h> int batadv_tt_init(struct batadv_priv *bat_priv); -bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr, +bool batadv_tt_local_add(struct net_device *mesh_iface, const u8 *addr, unsigned short vid, int ifindex, u32 mark); u16 batadv_tt_local_remove(struct batadv_priv *bat_priv, const u8 *addr, unsigned short vid, @@ -45,7 +45,7 @@ bool batadv_tt_global_client_is_roaming(struct batadv_priv *bat_priv, u8 *addr, unsigned short vid); bool batadv_tt_local_client_is_roaming(struct batadv_priv *bat_priv, u8 *addr, unsigned short vid); -void batadv_tt_local_resize_to_mtu(struct net_device *soft_iface); +void batadv_tt_local_resize_to_mtu(struct net_device *mesh_iface); bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, const unsigned char *addr, diff --git a/net/batman-adv/tvlv.c b/net/batman-adv/tvlv.c index 2a583215d439..76dff1f9c559 100644 --- a/net/batman-adv/tvlv.c +++ b/net/batman-adv/tvlv.c @@ -59,7 +59,7 @@ static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler) /** * batadv_tvlv_handler_get() - retrieve tvlv handler from the tvlv handler list * based on the provided type and version (both need to match) - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @type: tvlv handler type to look for * @version: tvlv handler version to look for * @@ -118,7 +118,7 @@ static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv) /** * batadv_tvlv_container_get() - retrieve tvlv container from the tvlv container * list based on the provided type and version (both need to match) - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @type: tvlv container type to look for * @version: tvlv container version to look for * @@ -152,7 +152,7 @@ batadv_tvlv_container_get(struct batadv_priv *bat_priv, u8 type, u8 version) /** * batadv_tvlv_container_list_size() - calculate the size of the tvlv container * list entries - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * * Has to be called with the appropriate locks being acquired * (tvlv.container_list_lock). @@ -177,7 +177,7 @@ static u16 batadv_tvlv_container_list_size(struct batadv_priv *bat_priv) /** * batadv_tvlv_container_remove() - remove tvlv container from the tvlv * container list - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tvlv: the to be removed tvlv container * * Has to be called with the appropriate locks being acquired @@ -201,7 +201,7 @@ static void batadv_tvlv_container_remove(struct batadv_priv *bat_priv, /** * batadv_tvlv_container_unregister() - unregister tvlv container based on the * provided type and version (both need to match) - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @type: tvlv container type to unregister * @version: tvlv container type to unregister */ @@ -219,7 +219,7 @@ void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv, /** * batadv_tvlv_container_register() - register tvlv type, version and content * to be propagated with each (primary interface) OGM - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @type: tvlv container type * @version: tvlv container version * @tvlv_value: tvlv container content @@ -297,7 +297,7 @@ static bool batadv_tvlv_realloc_packet_buff(unsigned char **packet_buff, /** * batadv_tvlv_container_ogm_append() - append tvlv container content to given * OGM packet buffer - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @packet_buff: ogm packet buffer * @packet_buff_len: ogm packet buffer size including ogm header and tvlv * content @@ -350,7 +350,7 @@ end: /** * batadv_tvlv_call_handler() - parse the given tvlv buffer to call the * appropriate handlers - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @tvlv_handler: tvlv callback function handling the tvlv content * @packet_type: indicates for which packet type the TVLV handler is called * @orig_node: orig node emitting the ogm packet @@ -421,7 +421,7 @@ static int batadv_tvlv_call_handler(struct batadv_priv *bat_priv, /** * batadv_tvlv_containers_process() - parse the given tvlv buffer to call the * appropriate handlers - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @packet_type: indicates for which packet type the TVLV handler is called * @orig_node: orig node emitting the ogm packet * @skb: the skb the TVLV handler is called for @@ -490,7 +490,7 @@ int batadv_tvlv_containers_process(struct batadv_priv *bat_priv, /** * batadv_tvlv_ogm_receive() - process an incoming ogm and call the appropriate * handlers - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @batadv_ogm_packet: ogm packet containing the tvlv containers * @orig_node: orig node emitting the ogm packet */ @@ -518,7 +518,7 @@ void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv, * batadv_tvlv_handler_register() - register tvlv handler based on the provided * type and version (both need to match) for ogm tvlv payload and/or unicast * payload - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @optr: ogm tvlv handler callback function. This function receives the orig * node, flags and the tvlv content as argument to process. * @uptr: unicast tvlv handler callback function. This function receives the @@ -583,7 +583,7 @@ void batadv_tvlv_handler_register(struct batadv_priv *bat_priv, /** * batadv_tvlv_handler_unregister() - unregister tvlv handler based on the * provided type and version (both need to match) - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @type: tvlv handler type to be unregistered * @version: tvlv handler version to be unregistered */ @@ -606,7 +606,7 @@ void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv, /** * batadv_tvlv_unicast_send() - send a unicast packet with tvlv payload to the * specified host - * @bat_priv: the bat priv with all the soft interface information + * @bat_priv: the bat priv with all the mesh interface information * @src: source mac address of the unicast packet * @dst: destination mac address of the unicast packet * @type: tvlv type diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 00840d5784fe..8fc5fe0e9b05 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -186,6 +186,9 @@ struct batadv_hard_iface { /** @net_dev: pointer to the net_device */ struct net_device *net_dev; + /** @dev_tracker: device tracker for @net_dev */ + netdevice_tracker dev_tracker; + /** @refcount: number of contexts the object is used */ struct kref refcount; @@ -196,10 +199,13 @@ struct batadv_hard_iface { struct packet_type batman_adv_ptype; /** - * @soft_iface: the batman-adv interface which uses this network + * @mesh_iface: the batman-adv interface which uses this network * interface */ - struct net_device *soft_iface; + struct net_device *mesh_iface; + + /** @meshif_dev_tracker: device tracker for @mesh_iface */ + netdevice_tracker meshif_dev_tracker; /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; @@ -287,7 +293,7 @@ struct batadv_frag_table_entry { /** @lock: lock to protect the list of fragments */ spinlock_t lock; - /** @timestamp: time (jiffie) of last received fragment */ + /** @timestamp: time (jiffy) of last received fragment */ unsigned long timestamp; /** @seqno: sequence number of the fragments in the list */ @@ -487,7 +493,7 @@ struct batadv_orig_node { /** @hash_entry: hlist node for &batadv_priv.orig_hash */ struct hlist_node hash_entry; - /** @bat_priv: pointer to soft_iface this orig node belongs to */ + /** @bat_priv: pointer to mesh_iface this orig node belongs to */ struct batadv_priv *bat_priv; /** @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno */ @@ -499,20 +505,6 @@ struct batadv_orig_node { /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; -#ifdef CONFIG_BATMAN_ADV_NC - /** @in_coding_list: list of nodes this orig can hear */ - struct list_head in_coding_list; - - /** @out_coding_list: list of nodes that can hear this orig */ - struct list_head out_coding_list; - - /** @in_coding_list_lock: protects in_coding_list */ - spinlock_t in_coding_list_lock; - - /** @out_coding_list_lock: protects out_coding_list */ - spinlock_t out_coding_list_lock; -#endif - /** @fragments: array with heads for fragment chains */ struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT]; @@ -539,9 +531,6 @@ enum batadv_orig_capabilities { */ BATADV_ORIG_CAPA_HAS_DAT, - /** @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled */ - BATADV_ORIG_CAPA_HAS_NC, - /** @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */ BATADV_ORIG_CAPA_HAS_TT, @@ -596,9 +585,6 @@ struct batadv_hardif_neigh_node_bat_v { * neighbor */ unsigned long last_unicast_tx; - - /** @metric_work: work queue callback item for metric update */ - struct work_struct metric_work; }; /** @@ -748,7 +734,7 @@ struct batadv_bcast_duplist_entry { u8 orig[ETH_ALEN]; /** @crc: crc32 checksum of broadcast payload */ - __be32 crc; + u32 crc; /** @entrytime: time when the broadcast packet was received */ unsigned long entrytime; @@ -902,13 +888,13 @@ enum batadv_counters { /** * @BATADV_CNT_MCAST_RX_LOCAL: counter for received batman-adv multicast - * packets which were forwarded to the local soft interface + * packets which were forwarded to the local mesh interface */ BATADV_CNT_MCAST_RX_LOCAL, /** * @BATADV_CNT_MCAST_RX_LOCAL_BYTES: bytes counter for received - * batman-adv multicast packets which were forwarded to the local soft + * batman-adv multicast packets which were forwarded to the local mesh * interface */ BATADV_CNT_MCAST_RX_LOCAL_BYTES, @@ -950,60 +936,6 @@ enum batadv_counters { BATADV_CNT_DAT_CACHED_REPLY_TX, #endif -#ifdef CONFIG_BATMAN_ADV_NC - /** - * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter - */ - BATADV_CNT_NC_CODE, - - /** - * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes - * counter - */ - BATADV_CNT_NC_CODE_BYTES, - - /** - * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet - * counter - */ - BATADV_CNT_NC_RECODE, - - /** - * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes - * counter - */ - BATADV_CNT_NC_RECODE_BYTES, - - /** - * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc - * decoding - */ - BATADV_CNT_NC_BUFFER, - - /** - * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter - */ - BATADV_CNT_NC_DECODE, - - /** - * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes - * counter - */ - BATADV_CNT_NC_DECODE_BYTES, - - /** - * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic - * packet counter - */ - BATADV_CNT_NC_DECODE_FAILED, - - /** - * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in - * promisc mode. - */ - BATADV_CNT_NC_SNIFFED, -#endif - /** @BATADV_CNT_NUM: number of traffic counters */ BATADV_CNT_NUM, }; @@ -1022,7 +954,7 @@ struct batadv_priv_tt { atomic_t ogm_append_cnt; /** @local_changes: changes registered in an originator interval */ - atomic_t local_changes; + size_t local_changes; /** * @changes_list: tracks tt local changes within an originator interval @@ -1044,7 +976,7 @@ struct batadv_priv_tt { */ struct list_head roam_list; - /** @changes_list_lock: lock protecting changes_list */ + /** @changes_list_lock: lock protecting changes_list & local_changes */ spinlock_t changes_list_lock; /** @req_list_lock: lock protecting req_list */ @@ -1140,29 +1072,6 @@ struct batadv_priv_bla { }; #endif -#ifdef CONFIG_BATMAN_ADV_DEBUG - -/** - * struct batadv_priv_debug_log - debug logging data - */ -struct batadv_priv_debug_log { - /** @log_buff: buffer holding the logs (ring buffer) */ - char log_buff[BATADV_LOG_BUF_LEN]; - - /** @log_start: index of next character to read */ - unsigned long log_start; - - /** @log_end: index of next character to write */ - unsigned long log_end; - - /** @lock: lock protecting log_buff, log_start & log_end */ - spinlock_t lock; - - /** @queue_wait: log reader's wait queue */ - wait_queue_head_t queue_wait; -}; -#endif - /** * struct batadv_priv_gw - per mesh interface gateway data */ @@ -1267,7 +1176,7 @@ struct batadv_mcast_mla_flags { /** @enabled: whether the multicast tvlv is currently enabled */ unsigned char enabled:1; - /** @bridged: whether the soft interface has a bridge on top */ + /** @bridged: whether the mesh interface has a bridge on top */ unsigned char bridged:1; /** @tvlv_flags: the flags we have last sent in our mcast tvlv */ @@ -1360,56 +1269,6 @@ struct batadv_priv_mcast { #endif /** - * struct batadv_priv_nc - per mesh interface network coding private data - */ -struct batadv_priv_nc { - /** @work: work queue callback item for cleanup */ - struct delayed_work work; - - /** - * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq - */ - u8 min_tq; - - /** - * @max_fwd_delay: maximum packet forward delay to allow coding of - * packets - */ - u32 max_fwd_delay; - - /** - * @max_buffer_time: buffer time for sniffed packets used to decoding - */ - u32 max_buffer_time; - - /** - * @timestamp_fwd_flush: timestamp of last forward packet queue flush - */ - unsigned long timestamp_fwd_flush; - - /** - * @timestamp_sniffed_purge: timestamp of last sniffed packet queue - * purge - */ - unsigned long timestamp_sniffed_purge; - - /** - * @coding_hash: Hash table used to buffer skbs while waiting for - * another incoming skb to code it with. Skbs are added to the buffer - * just before being forwarded in routing.c - */ - struct batadv_hashtable *coding_hash; - - /** - * @decoding_hash: Hash table used to buffer skbs that might be needed - * to decode a received coded skb. The buffer is used for 1) skbs - * arriving on the soft-interface; 2) skbs overheard on the - * hard-interface; and 3) skbs forwarded by batman-adv. - */ - struct batadv_hashtable *decoding_hash; -}; - -/** * struct batadv_tp_unacked - unacked packet meta-information * * This struct is supposed to represent a buffer unacked packet. However, since @@ -1556,9 +1415,9 @@ struct batadv_tp_vars { }; /** - * struct batadv_softif_vlan - per VLAN attributes set + * struct batadv_meshif_vlan - per VLAN attributes set */ -struct batadv_softif_vlan { +struct batadv_meshif_vlan { /** @bat_priv: pointer to the mesh object */ struct batadv_priv *bat_priv; @@ -1571,7 +1430,7 @@ struct batadv_softif_vlan { /** @tt: TT private attributes (VLAN specific) */ struct batadv_vlan_tt tt; - /** @list: list node for &bat_priv.softif_vlan_list */ + /** @list: list node for &bat_priv.meshif_vlan_list */ struct hlist_node list; /** @@ -1584,7 +1443,7 @@ struct batadv_softif_vlan { }; /** - * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data + * struct batadv_priv_bat_v - B.A.T.M.A.N. V per mesh-interface private data */ struct batadv_priv_bat_v { /** @ogm_buff: buffer holding the OGM packet */ @@ -1613,8 +1472,8 @@ struct batadv_priv { */ atomic_t mesh_state; - /** @soft_iface: net device which holds this struct as private data */ - struct net_device *soft_iface; + /** @mesh_iface: net device which holds this struct as private data */ + struct net_device *mesh_iface; /** * @mtu_set_by_user: MTU was set once by user @@ -1763,24 +1622,19 @@ struct batadv_priv { struct batadv_algo_ops *algo_ops; /** - * @softif_vlan_list: a list of softif_vlan structs, one per VLAN + * @meshif_vlan_list: a list of meshif_vlan structs, one per VLAN * created on top of the mesh interface represented by this object */ - struct hlist_head softif_vlan_list; + struct hlist_head meshif_vlan_list; - /** @softif_vlan_list_lock: lock protecting softif_vlan_list */ - spinlock_t softif_vlan_list_lock; + /** @meshif_vlan_list_lock: lock protecting meshif_vlan_list */ + spinlock_t meshif_vlan_list_lock; #ifdef CONFIG_BATMAN_ADV_BLA /** @bla: bridge loop avoidance data */ struct batadv_priv_bla bla; #endif -#ifdef CONFIG_BATMAN_ADV_DEBUG - /** @debug_log: holding debug logging relevant data */ - struct batadv_priv_debug_log *debug_log; -#endif - /** @gw: gateway data */ struct batadv_priv_gw gw; @@ -1800,18 +1654,8 @@ struct batadv_priv { struct batadv_priv_mcast mcast; #endif -#ifdef CONFIG_BATMAN_ADV_NC - /** - * @network_coding: bool indicating whether network coding is enabled - */ - atomic_t network_coding; - - /** @nc: network coding data */ - struct batadv_priv_nc nc; -#endif /* CONFIG_BATMAN_ADV_NC */ - #ifdef CONFIG_BATMAN_ADV_BATMAN_V - /** @bat_v: B.A.T.M.A.N. V per soft-interface private data */ + /** @bat_v: B.A.T.M.A.N. V per mesh-interface private data */ struct batadv_priv_bat_v bat_v; #endif }; @@ -1834,7 +1678,7 @@ struct batadv_bla_backbone_gw { /** @hash_entry: hlist node for &batadv_priv_bla.backbone_hash */ struct hlist_node hash_entry; - /** @bat_priv: pointer to soft_iface this backbone gateway belongs to */ + /** @bat_priv: pointer to mesh_iface this backbone gateway belongs to */ struct batadv_priv *bat_priv; /** @lasttime: last time we heard of this backbone gw */ @@ -1939,8 +1783,8 @@ struct batadv_tt_local_entry { /** @last_seen: timestamp used for purging stale tt local entries */ unsigned long last_seen; - /** @vlan: soft-interface vlan of the entry */ - struct batadv_softif_vlan *vlan; + /** @vlan: mesh-interface vlan of the entry */ + struct batadv_meshif_vlan *vlan; }; /** @@ -2042,95 +1886,10 @@ struct batadv_tt_roam_node { }; /** - * struct batadv_nc_node - network coding node - */ -struct batadv_nc_node { - /** @list: next and prev pointer for the list handling */ - struct list_head list; - - /** @addr: the node's mac address */ - u8 addr[ETH_ALEN]; - - /** @refcount: number of contexts the object is used by */ - struct kref refcount; - - /** @rcu: struct used for freeing in an RCU-safe manner */ - struct rcu_head rcu; - - /** @orig_node: pointer to corresponding orig node struct */ - struct batadv_orig_node *orig_node; - - /** @last_seen: timestamp of last ogm received from this node */ - unsigned long last_seen; -}; - -/** - * struct batadv_nc_path - network coding path - */ -struct batadv_nc_path { - /** @hash_entry: next and prev pointer for the list handling */ - struct hlist_node hash_entry; - - /** @rcu: struct used for freeing in an RCU-safe manner */ - struct rcu_head rcu; - - /** @refcount: number of contexts the object is used by */ - struct kref refcount; - - /** @packet_list: list of buffered packets for this path */ - struct list_head packet_list; - - /** @packet_list_lock: access lock for packet list */ - spinlock_t packet_list_lock; - - /** @next_hop: next hop (destination) of path */ - u8 next_hop[ETH_ALEN]; - - /** @prev_hop: previous hop (source) of path */ - u8 prev_hop[ETH_ALEN]; - - /** @last_valid: timestamp for last validation of path */ - unsigned long last_valid; -}; - -/** - * struct batadv_nc_packet - network coding packet used when coding and - * decoding packets - */ -struct batadv_nc_packet { - /** @list: next and prev pointer for the list handling */ - struct list_head list; - - /** @packet_id: crc32 checksum of skb data */ - __be32 packet_id; - - /** - * @timestamp: field containing the info when the packet was added to - * path - */ - unsigned long timestamp; - - /** @neigh_node: pointer to original next hop neighbor of skb */ - struct batadv_neigh_node *neigh_node; - - /** @skb: skb which can be encoded or used for decoding */ - struct sk_buff *skb; - - /** @nc_path: pointer to path this nc packet is attached to */ - struct batadv_nc_path *nc_path; -}; - -/** * struct batadv_skb_cb - control buffer structure used to store private data * relevant to batman-adv in the skb->cb buffer in skbs. */ struct batadv_skb_cb { - /** - * @decoded: Marks a skb as decoded, which is checked when searching for - * coding opportunities in network-coding.c - */ - unsigned char decoded:1; - /** @num_bcasts: Counter for broadcast packet retransmissions */ unsigned char num_bcasts; }; @@ -2164,7 +1923,7 @@ struct batadv_forw_packet { u16 packet_len; /** @direct_link_flags: direct link flags for aggregated OGM packets */ - u32 direct_link_flags; + DECLARE_BITMAP(direct_link_flags, BATADV_MAX_AGGREGATION_PACKETS); /** @num_packets: counter for aggregated OGMv1 packets */ u8 num_packets; |