diff options
Diffstat (limited to 'net/dsa/slave.c')
| -rw-r--r-- | net/dsa/slave.c | 1625 |
1 files changed, 0 insertions, 1625 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c deleted file mode 100644 index 91de3a663226..000000000000 --- a/net/dsa/slave.c +++ /dev/null @@ -1,1625 +0,0 @@ -/* - * net/dsa/slave.c - Slave device handling - * Copyright (c) 2008-2009 Marvell Semiconductor - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/list.h> -#include <linux/etherdevice.h> -#include <linux/netdevice.h> -#include <linux/phy.h> -#include <linux/phy_fixed.h> -#include <linux/phylink.h> -#include <linux/of_net.h> -#include <linux/of_mdio.h> -#include <linux/mdio.h> -#include <net/rtnetlink.h> -#include <net/pkt_cls.h> -#include <net/tc_act/tc_mirred.h> -#include <linux/if_bridge.h> -#include <linux/netpoll.h> -#include <linux/ptp_classify.h> - -#include "dsa_priv.h" - -static bool dsa_slave_dev_check(struct net_device *dev); - -/* slave mii_bus handling ***************************************************/ -static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) -{ - struct dsa_switch *ds = bus->priv; - - if (ds->phys_mii_mask & (1 << addr)) - return ds->ops->phy_read(ds, addr, reg); - - return 0xffff; -} - -static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) -{ - struct dsa_switch *ds = bus->priv; - - if (ds->phys_mii_mask & (1 << addr)) - return ds->ops->phy_write(ds, addr, reg, val); - - return 0; -} - -void dsa_slave_mii_bus_init(struct dsa_switch *ds) -{ - ds->slave_mii_bus->priv = (void *)ds; - ds->slave_mii_bus->name = "dsa slave smi"; - ds->slave_mii_bus->read = dsa_slave_phy_read; - ds->slave_mii_bus->write = dsa_slave_phy_write; - snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d", - ds->dst->index, ds->index); - ds->slave_mii_bus->parent = ds->dev; - ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask; -} - - -/* slave device handling ****************************************************/ -static int dsa_slave_get_iflink(const struct net_device *dev) -{ - return dsa_slave_to_master(dev)->ifindex; -} - -static int dsa_slave_open(struct net_device *dev) -{ - struct net_device *master = dsa_slave_to_master(dev); - struct dsa_port *dp = dsa_slave_to_port(dev); - int err; - - if (!(master->flags & IFF_UP)) - return -ENETDOWN; - - if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { - err = dev_uc_add(master, dev->dev_addr); - if (err < 0) - goto out; - } - - if (dev->flags & IFF_ALLMULTI) { - err = dev_set_allmulti(master, 1); - if (err < 0) - goto del_unicast; - } - if (dev->flags & IFF_PROMISC) { - err = dev_set_promiscuity(master, 1); - if (err < 0) - goto clear_allmulti; - } - - err = dsa_port_enable(dp, dev->phydev); - if (err) - goto clear_promisc; - - phylink_start(dp->pl); - - return 0; - -clear_promisc: - if (dev->flags & IFF_PROMISC) - dev_set_promiscuity(master, -1); -clear_allmulti: - if (dev->flags & IFF_ALLMULTI) - dev_set_allmulti(master, -1); -del_unicast: - if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) - dev_uc_del(master, dev->dev_addr); -out: - return err; -} - -static int dsa_slave_close(struct net_device *dev) -{ - struct net_device *master = dsa_slave_to_master(dev); - struct dsa_port *dp = dsa_slave_to_port(dev); - - phylink_stop(dp->pl); - - dsa_port_disable(dp, dev->phydev); - - dev_mc_unsync(master, dev); - dev_uc_unsync(master, dev); - if (dev->flags & IFF_ALLMULTI) - dev_set_allmulti(master, -1); - if (dev->flags & IFF_PROMISC) - dev_set_promiscuity(master, -1); - - if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) - dev_uc_del(master, dev->dev_addr); - - return 0; -} - -static void dsa_slave_change_rx_flags(struct net_device *dev, int change) -{ - struct net_device *master = dsa_slave_to_master(dev); - - if (change & IFF_ALLMULTI) - dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1); - if (change & IFF_PROMISC) - dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); -} - -static void dsa_slave_set_rx_mode(struct net_device *dev) -{ - struct net_device *master = dsa_slave_to_master(dev); - - dev_mc_sync(master, dev); - dev_uc_sync(master, dev); -} - -static int dsa_slave_set_mac_address(struct net_device *dev, void *a) -{ - struct net_device *master = dsa_slave_to_master(dev); - struct sockaddr *addr = a; - int err; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EADDRNOTAVAIL; - - if (!(dev->flags & IFF_UP)) - goto out; - - if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { - err = dev_uc_add(master, addr->sa_data); - if (err < 0) - return err; - } - - if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) - dev_uc_del(master, dev->dev_addr); - -out: - ether_addr_copy(dev->dev_addr, addr->sa_data); - - return 0; -} - -struct dsa_slave_dump_ctx { - struct net_device *dev; - struct sk_buff *skb; - struct netlink_callback *cb; - int idx; -}; - -static int -dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid, - bool is_static, void *data) -{ - struct dsa_slave_dump_ctx *dump = data; - u32 portid = NETLINK_CB(dump->cb->skb).portid; - u32 seq = dump->cb->nlh->nlmsg_seq; - struct nlmsghdr *nlh; - struct ndmsg *ndm; - - if (dump->idx < dump->cb->args[2]) - goto skip; - - nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, - sizeof(*ndm), NLM_F_MULTI); - if (!nlh) - return -EMSGSIZE; - - ndm = nlmsg_data(nlh); - ndm->ndm_family = AF_BRIDGE; - ndm->ndm_pad1 = 0; - ndm->ndm_pad2 = 0; - ndm->ndm_flags = NTF_SELF; - ndm->ndm_type = 0; - ndm->ndm_ifindex = dump->dev->ifindex; - ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; - - if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr)) - goto nla_put_failure; - - if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid)) - goto nla_put_failure; - - nlmsg_end(dump->skb, nlh); - -skip: - dump->idx++; - return 0; - -nla_put_failure: - nlmsg_cancel(dump->skb, nlh); - return -EMSGSIZE; -} - -static int -dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, - struct net_device *dev, struct net_device *filter_dev, - int *idx) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_slave_dump_ctx dump = { - .dev = dev, - .skb = skb, - .cb = cb, - .idx = *idx, - }; - int err; - - err = dsa_port_fdb_dump(dp, dsa_slave_port_fdb_do_dump, &dump); - *idx = dump.idx; - - return err; -} - -static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - struct dsa_slave_priv *p = netdev_priv(dev); - struct dsa_switch *ds = p->dp->ds; - int port = p->dp->index; - - /* Pass through to switch driver if it supports timestamping */ - switch (cmd) { - case SIOCGHWTSTAMP: - if (ds->ops->port_hwtstamp_get) - return ds->ops->port_hwtstamp_get(ds, port, ifr); - break; - case SIOCSHWTSTAMP: - if (ds->ops->port_hwtstamp_set) - return ds->ops->port_hwtstamp_set(ds, port, ifr); - break; - } - - return phylink_mii_ioctl(p->dp->pl, ifr, cmd); -} - -static int dsa_slave_port_attr_set(struct net_device *dev, - const struct switchdev_attr *attr, - struct switchdev_trans *trans) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - int ret; - - switch (attr->id) { - case SWITCHDEV_ATTR_ID_PORT_STP_STATE: - ret = dsa_port_set_state(dp, attr->u.stp_state, trans); - break; - case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: - ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering, - trans); - break; - case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: - ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans); - break; - default: - ret = -EOPNOTSUPP; - break; - } - - return ret; -} - -static int dsa_slave_port_obj_add(struct net_device *dev, - const struct switchdev_obj *obj, - struct switchdev_trans *trans) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - int err; - - /* For the prepare phase, ensure the full set of changes is feasable in - * one go in order to signal a failure properly. If an operation is not - * supported, return -EOPNOTSUPP. - */ - - switch (obj->id) { - case SWITCHDEV_OBJ_ID_PORT_MDB: - err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans); - break; - case SWITCHDEV_OBJ_ID_HOST_MDB: - /* DSA can directly translate this to a normal MDB add, - * but on the CPU port. - */ - err = dsa_port_mdb_add(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj), - trans); - break; - case SWITCHDEV_OBJ_ID_PORT_VLAN: - err = dsa_port_vlan_add(dp, SWITCHDEV_OBJ_PORT_VLAN(obj), - trans); - break; - default: - err = -EOPNOTSUPP; - break; - } - - return err; -} - -static int dsa_slave_port_obj_del(struct net_device *dev, - const struct switchdev_obj *obj) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - int err; - - switch (obj->id) { - case SWITCHDEV_OBJ_ID_PORT_MDB: - err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj)); - break; - case SWITCHDEV_OBJ_ID_HOST_MDB: - /* DSA can directly translate this to a normal MDB add, - * but on the CPU port. - */ - err = dsa_port_mdb_del(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj)); - break; - case SWITCHDEV_OBJ_ID_PORT_VLAN: - err = dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj)); - break; - default: - err = -EOPNOTSUPP; - break; - } - - return err; -} - -static int dsa_slave_port_attr_get(struct net_device *dev, - struct switchdev_attr *attr) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - struct dsa_switch_tree *dst = ds->dst; - - switch (attr->id) { - case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: - attr->u.ppid.id_len = sizeof(dst->index); - memcpy(&attr->u.ppid.id, &dst->index, attr->u.ppid.id_len); - break; - case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT: - attr->u.brport_flags_support = 0; - break; - default: - return -EOPNOTSUPP; - } - - return 0; -} - -static inline netdev_tx_t dsa_slave_netpoll_send_skb(struct net_device *dev, - struct sk_buff *skb) -{ -#ifdef CONFIG_NET_POLL_CONTROLLER - struct dsa_slave_priv *p = netdev_priv(dev); - - if (p->netpoll) - netpoll_send_skb(p->netpoll, skb); -#else - BUG(); -#endif - return NETDEV_TX_OK; -} - -static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p, - struct sk_buff *skb) -{ - struct dsa_switch *ds = p->dp->ds; - struct sk_buff *clone; - unsigned int type; - - type = ptp_classify_raw(skb); - if (type == PTP_CLASS_NONE) - return; - - if (!ds->ops->port_txtstamp) - return; - - clone = skb_clone_sk(skb); - if (!clone) - return; - - if (ds->ops->port_txtstamp(ds, p->dp->index, clone, type)) - return; - - kfree_skb(clone); -} - -static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct dsa_slave_priv *p = netdev_priv(dev); - struct pcpu_sw_netstats *s; - struct sk_buff *nskb; - - s = this_cpu_ptr(p->stats64); - u64_stats_update_begin(&s->syncp); - s->tx_packets++; - s->tx_bytes += skb->len; - u64_stats_update_end(&s->syncp); - - /* Identify PTP protocol packets, clone them, and pass them to the - * switch driver - */ - dsa_skb_tx_timestamp(p, skb); - - /* Transmit function may have to reallocate the original SKB, - * in which case it must have freed it. Only free it here on error. - */ - nskb = p->xmit(skb, dev); - if (!nskb) { - kfree_skb(skb); - return NETDEV_TX_OK; - } - - /* SKB for netpoll still need to be mangled with the protocol-specific - * tag to be successfully transmitted - */ - if (unlikely(netpoll_tx_running(dev))) - return dsa_slave_netpoll_send_skb(dev, nskb); - - /* Queue the SKB for transmission on the parent interface, but - * do not modify its EtherType - */ - nskb->dev = dsa_slave_to_master(dev); - dev_queue_xmit(nskb); - - return NETDEV_TX_OK; -} - -/* ethtool operations *******************************************************/ - -static void dsa_slave_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *drvinfo) -{ - strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); - strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); - strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); -} - -static int dsa_slave_get_regs_len(struct net_device *dev) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (ds->ops->get_regs_len) - return ds->ops->get_regs_len(ds, dp->index); - - return -EOPNOTSUPP; -} - -static void -dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (ds->ops->get_regs) - ds->ops->get_regs(ds, dp->index, regs, _p); -} - -static int dsa_slave_nway_reset(struct net_device *dev) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - - return phylink_ethtool_nway_reset(dp->pl); -} - -static int dsa_slave_get_eeprom_len(struct net_device *dev) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (ds->cd && ds->cd->eeprom_len) - return ds->cd->eeprom_len; - - if (ds->ops->get_eeprom_len) - return ds->ops->get_eeprom_len(ds); - - return 0; -} - -static int dsa_slave_get_eeprom(struct net_device *dev, - struct ethtool_eeprom *eeprom, u8 *data) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (ds->ops->get_eeprom) - return ds->ops->get_eeprom(ds, eeprom, data); - - return -EOPNOTSUPP; -} - -static int dsa_slave_set_eeprom(struct net_device *dev, - struct ethtool_eeprom *eeprom, u8 *data) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (ds->ops->set_eeprom) - return ds->ops->set_eeprom(ds, eeprom, data); - - return -EOPNOTSUPP; -} - -static void dsa_slave_get_strings(struct net_device *dev, - uint32_t stringset, uint8_t *data) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (stringset == ETH_SS_STATS) { - int len = ETH_GSTRING_LEN; - - strncpy(data, "tx_packets", len); - strncpy(data + len, "tx_bytes", len); - strncpy(data + 2 * len, "rx_packets", len); - strncpy(data + 3 * len, "rx_bytes", len); - if (ds->ops->get_strings) - ds->ops->get_strings(ds, dp->index, stringset, - data + 4 * len); - } -} - -static void dsa_slave_get_ethtool_stats(struct net_device *dev, - struct ethtool_stats *stats, - uint64_t *data) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_slave_priv *p = netdev_priv(dev); - struct dsa_switch *ds = dp->ds; - struct pcpu_sw_netstats *s; - unsigned int start; - int i; - - for_each_possible_cpu(i) { - u64 tx_packets, tx_bytes, rx_packets, rx_bytes; - - s = per_cpu_ptr(p->stats64, i); - do { - start = u64_stats_fetch_begin_irq(&s->syncp); - tx_packets = s->tx_packets; - tx_bytes = s->tx_bytes; - rx_packets = s->rx_packets; - rx_bytes = s->rx_bytes; - } while (u64_stats_fetch_retry_irq(&s->syncp, start)); - data[0] += tx_packets; - data[1] += tx_bytes; - data[2] += rx_packets; - data[3] += rx_bytes; - } - if (ds->ops->get_ethtool_stats) - ds->ops->get_ethtool_stats(ds, dp->index, data + 4); -} - -static int dsa_slave_get_sset_count(struct net_device *dev, int sset) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (sset == ETH_SS_STATS) { - int count; - - count = 4; - if (ds->ops->get_sset_count) - count += ds->ops->get_sset_count(ds, dp->index, sset); - - return count; - } - - return -EOPNOTSUPP; -} - -static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - phylink_ethtool_get_wol(dp->pl, w); - - if (ds->ops->get_wol) - ds->ops->get_wol(ds, dp->index, w); -} - -static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - int ret = -EOPNOTSUPP; - - phylink_ethtool_set_wol(dp->pl, w); - - if (ds->ops->set_wol) - ret = ds->ops->set_wol(ds, dp->index, w); - - return ret; -} - -static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - int ret; - - /* Port's PHY and MAC both need to be EEE capable */ - if (!dev->phydev && !dp->pl) - return -ENODEV; - - if (!ds->ops->set_mac_eee) - return -EOPNOTSUPP; - - ret = ds->ops->set_mac_eee(ds, dp->index, e); - if (ret) - return ret; - - return phylink_ethtool_set_eee(dp->pl, e); -} - -static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - int ret; - - /* Port's PHY and MAC both need to be EEE capable */ - if (!dev->phydev && !dp->pl) - return -ENODEV; - - if (!ds->ops->get_mac_eee) - return -EOPNOTSUPP; - - ret = ds->ops->get_mac_eee(ds, dp->index, e); - if (ret) - return ret; - - return phylink_ethtool_get_eee(dp->pl, e); -} - -static int dsa_slave_get_link_ksettings(struct net_device *dev, - struct ethtool_link_ksettings *cmd) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - - return phylink_ethtool_ksettings_get(dp->pl, cmd); -} - -static int dsa_slave_set_link_ksettings(struct net_device *dev, - const struct ethtool_link_ksettings *cmd) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - - return phylink_ethtool_ksettings_set(dp->pl, cmd); -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static int dsa_slave_netpoll_setup(struct net_device *dev, - struct netpoll_info *ni) -{ - struct net_device *master = dsa_slave_to_master(dev); - struct dsa_slave_priv *p = netdev_priv(dev); - struct netpoll *netpoll; - int err = 0; - - netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); - if (!netpoll) - return -ENOMEM; - - err = __netpoll_setup(netpoll, master); - if (err) { - kfree(netpoll); - goto out; - } - - p->netpoll = netpoll; -out: - return err; -} - -static void dsa_slave_netpoll_cleanup(struct net_device *dev) -{ - struct dsa_slave_priv *p = netdev_priv(dev); - struct netpoll *netpoll = p->netpoll; - - if (!netpoll) - return; - - p->netpoll = NULL; - - __netpoll_free(netpoll); -} - -static void dsa_slave_poll_controller(struct net_device *dev) -{ -} -#endif - -static int dsa_slave_get_phys_port_name(struct net_device *dev, - char *name, size_t len) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - - if (snprintf(name, len, "p%d", dp->index) >= len) - return -EINVAL; - - return 0; -} - -static struct dsa_mall_tc_entry * -dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie) -{ - struct dsa_slave_priv *p = netdev_priv(dev); - struct dsa_mall_tc_entry *mall_tc_entry; - - list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list) - if (mall_tc_entry->cookie == cookie) - return mall_tc_entry; - - return NULL; -} - -static int dsa_slave_add_cls_matchall(struct net_device *dev, - struct tc_cls_matchall_offload *cls, - bool ingress) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_slave_priv *p = netdev_priv(dev); - struct dsa_mall_tc_entry *mall_tc_entry; - __be16 protocol = cls->common.protocol; - struct dsa_switch *ds = dp->ds; - struct net_device *to_dev; - const struct tc_action *a; - struct dsa_port *to_dp; - int err = -EOPNOTSUPP; - - if (!ds->ops->port_mirror_add) - return err; - - if (!tcf_exts_has_one_action(cls->exts)) - return err; - - a = tcf_exts_first_action(cls->exts); - - if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) { - struct dsa_mall_mirror_tc_entry *mirror; - - to_dev = tcf_mirred_dev(a); - if (!to_dev) - return -EINVAL; - - if (!dsa_slave_dev_check(to_dev)) - return -EOPNOTSUPP; - - mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL); - if (!mall_tc_entry) - return -ENOMEM; - - mall_tc_entry->cookie = cls->cookie; - mall_tc_entry->type = DSA_PORT_MALL_MIRROR; - mirror = &mall_tc_entry->mirror; - - to_dp = dsa_slave_to_port(to_dev); - - mirror->to_local_port = to_dp->index; - mirror->ingress = ingress; - - err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress); - if (err) { - kfree(mall_tc_entry); - return err; - } - - list_add_tail(&mall_tc_entry->list, &p->mall_tc_list); - } - - return 0; -} - -static void dsa_slave_del_cls_matchall(struct net_device *dev, - struct tc_cls_matchall_offload *cls) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_mall_tc_entry *mall_tc_entry; - struct dsa_switch *ds = dp->ds; - - if (!ds->ops->port_mirror_del) - return; - - mall_tc_entry = dsa_slave_mall_tc_entry_find(dev, cls->cookie); - if (!mall_tc_entry) - return; - - list_del(&mall_tc_entry->list); - - switch (mall_tc_entry->type) { - case DSA_PORT_MALL_MIRROR: - ds->ops->port_mirror_del(ds, dp->index, &mall_tc_entry->mirror); - break; - default: - WARN_ON(1); - } - - kfree(mall_tc_entry); -} - -static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev, - struct tc_cls_matchall_offload *cls, - bool ingress) -{ - if (cls->common.chain_index) - return -EOPNOTSUPP; - - switch (cls->command) { - case TC_CLSMATCHALL_REPLACE: - return dsa_slave_add_cls_matchall(dev, cls, ingress); - case TC_CLSMATCHALL_DESTROY: - dsa_slave_del_cls_matchall(dev, cls); - return 0; - default: - return -EOPNOTSUPP; - } -} - -static int dsa_slave_setup_tc_block_cb(enum tc_setup_type type, void *type_data, - void *cb_priv, bool ingress) -{ - struct net_device *dev = cb_priv; - - if (!tc_can_offload(dev)) - return -EOPNOTSUPP; - - switch (type) { - case TC_SETUP_CLSMATCHALL: - return dsa_slave_setup_tc_cls_matchall(dev, type_data, ingress); - default: - return -EOPNOTSUPP; - } -} - -static int dsa_slave_setup_tc_block_cb_ig(enum tc_setup_type type, - void *type_data, void *cb_priv) -{ - return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, true); -} - -static int dsa_slave_setup_tc_block_cb_eg(enum tc_setup_type type, - void *type_data, void *cb_priv) -{ - return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, false); -} - -static int dsa_slave_setup_tc_block(struct net_device *dev, - struct tc_block_offload *f) -{ - tc_setup_cb_t *cb; - - if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS) - cb = dsa_slave_setup_tc_block_cb_ig; - else if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS) - cb = dsa_slave_setup_tc_block_cb_eg; - else - return -EOPNOTSUPP; - - switch (f->command) { - case TC_BLOCK_BIND: - return tcf_block_cb_register(f->block, cb, dev, dev, f->extack); - case TC_BLOCK_UNBIND: - tcf_block_cb_unregister(f->block, cb, dev); - return 0; - default: - return -EOPNOTSUPP; - } -} - -static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type, - void *type_data) -{ - switch (type) { - case TC_SETUP_BLOCK: - return dsa_slave_setup_tc_block(dev, type_data); - default: - return -EOPNOTSUPP; - } -} - -static void dsa_slave_get_stats64(struct net_device *dev, - struct rtnl_link_stats64 *stats) -{ - struct dsa_slave_priv *p = netdev_priv(dev); - struct pcpu_sw_netstats *s; - unsigned int start; - int i; - - netdev_stats_to_stats64(stats, &dev->stats); - for_each_possible_cpu(i) { - u64 tx_packets, tx_bytes, rx_packets, rx_bytes; - - s = per_cpu_ptr(p->stats64, i); - do { - start = u64_stats_fetch_begin_irq(&s->syncp); - tx_packets = s->tx_packets; - tx_bytes = s->tx_bytes; - rx_packets = s->rx_packets; - rx_bytes = s->rx_bytes; - } while (u64_stats_fetch_retry_irq(&s->syncp, start)); - - stats->tx_packets += tx_packets; - stats->tx_bytes += tx_bytes; - stats->rx_packets += rx_packets; - stats->rx_bytes += rx_bytes; - } -} - -static int dsa_slave_get_rxnfc(struct net_device *dev, - struct ethtool_rxnfc *nfc, u32 *rule_locs) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (!ds->ops->get_rxnfc) - return -EOPNOTSUPP; - - return ds->ops->get_rxnfc(ds, dp->index, nfc, rule_locs); -} - -static int dsa_slave_set_rxnfc(struct net_device *dev, - struct ethtool_rxnfc *nfc) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (!ds->ops->set_rxnfc) - return -EOPNOTSUPP; - - return ds->ops->set_rxnfc(ds, dp->index, nfc); -} - -static int dsa_slave_get_ts_info(struct net_device *dev, - struct ethtool_ts_info *ts) -{ - struct dsa_slave_priv *p = netdev_priv(dev); - struct dsa_switch *ds = p->dp->ds; - - if (!ds->ops->get_ts_info) - return -EOPNOTSUPP; - - return ds->ops->get_ts_info(ds, p->dp->index, ts); -} - -static const struct ethtool_ops dsa_slave_ethtool_ops = { - .get_drvinfo = dsa_slave_get_drvinfo, - .get_regs_len = dsa_slave_get_regs_len, - .get_regs = dsa_slave_get_regs, - .nway_reset = dsa_slave_nway_reset, - .get_link = ethtool_op_get_link, - .get_eeprom_len = dsa_slave_get_eeprom_len, - .get_eeprom = dsa_slave_get_eeprom, - .set_eeprom = dsa_slave_set_eeprom, - .get_strings = dsa_slave_get_strings, - .get_ethtool_stats = dsa_slave_get_ethtool_stats, - .get_sset_count = dsa_slave_get_sset_count, - .set_wol = dsa_slave_set_wol, - .get_wol = dsa_slave_get_wol, - .set_eee = dsa_slave_set_eee, - .get_eee = dsa_slave_get_eee, - .get_link_ksettings = dsa_slave_get_link_ksettings, - .set_link_ksettings = dsa_slave_set_link_ksettings, - .get_rxnfc = dsa_slave_get_rxnfc, - .set_rxnfc = dsa_slave_set_rxnfc, - .get_ts_info = dsa_slave_get_ts_info, -}; - -/* legacy way, bypassing the bridge *****************************************/ -int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], - struct net_device *dev, - const unsigned char *addr, u16 vid, - u16 flags, - struct netlink_ext_ack *extack) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - - return dsa_port_fdb_add(dp, addr, vid); -} - -int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], - struct net_device *dev, - const unsigned char *addr, u16 vid) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - - return dsa_port_fdb_del(dp, addr, vid); -} - -static const struct net_device_ops dsa_slave_netdev_ops = { - .ndo_open = dsa_slave_open, - .ndo_stop = dsa_slave_close, - .ndo_start_xmit = dsa_slave_xmit, - .ndo_change_rx_flags = dsa_slave_change_rx_flags, - .ndo_set_rx_mode = dsa_slave_set_rx_mode, - .ndo_set_mac_address = dsa_slave_set_mac_address, - .ndo_fdb_add = dsa_legacy_fdb_add, - .ndo_fdb_del = dsa_legacy_fdb_del, - .ndo_fdb_dump = dsa_slave_fdb_dump, - .ndo_do_ioctl = dsa_slave_ioctl, - .ndo_get_iflink = dsa_slave_get_iflink, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_netpoll_setup = dsa_slave_netpoll_setup, - .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup, - .ndo_poll_controller = dsa_slave_poll_controller, -#endif - .ndo_get_phys_port_name = dsa_slave_get_phys_port_name, - .ndo_setup_tc = dsa_slave_setup_tc, - .ndo_get_stats64 = dsa_slave_get_stats64, -}; - -static const struct switchdev_ops dsa_slave_switchdev_ops = { - .switchdev_port_attr_get = dsa_slave_port_attr_get, - .switchdev_port_attr_set = dsa_slave_port_attr_set, -}; - -static struct device_type dsa_type = { - .name = "dsa", -}; - -static void dsa_slave_phylink_validate(struct net_device *dev, - unsigned long *supported, - struct phylink_link_state *state) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (!ds->ops->phylink_validate) - return; - - ds->ops->phylink_validate(ds, dp->index, supported, state); -} - -static int dsa_slave_phylink_mac_link_state(struct net_device *dev, - struct phylink_link_state *state) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - /* Only called for SGMII and 802.3z */ - if (!ds->ops->phylink_mac_link_state) - return -EOPNOTSUPP; - - return ds->ops->phylink_mac_link_state(ds, dp->index, state); -} - -static void dsa_slave_phylink_mac_config(struct net_device *dev, - unsigned int mode, - const struct phylink_link_state *state) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (!ds->ops->phylink_mac_config) - return; - - ds->ops->phylink_mac_config(ds, dp->index, mode, state); -} - -static void dsa_slave_phylink_mac_an_restart(struct net_device *dev) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (!ds->ops->phylink_mac_an_restart) - return; - - ds->ops->phylink_mac_an_restart(ds, dp->index); -} - -static void dsa_slave_phylink_mac_link_down(struct net_device *dev, - unsigned int mode, - phy_interface_t interface) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (!ds->ops->phylink_mac_link_down) { - if (ds->ops->adjust_link && dev->phydev) - ds->ops->adjust_link(ds, dp->index, dev->phydev); - return; - } - - ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface); -} - -static void dsa_slave_phylink_mac_link_up(struct net_device *dev, - unsigned int mode, - phy_interface_t interface, - struct phy_device *phydev) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - if (!ds->ops->phylink_mac_link_up) { - if (ds->ops->adjust_link && dev->phydev) - ds->ops->adjust_link(ds, dp->index, dev->phydev); - return; - } - - ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev); -} - -static const struct phylink_mac_ops dsa_slave_phylink_mac_ops = { - .validate = dsa_slave_phylink_validate, - .mac_link_state = dsa_slave_phylink_mac_link_state, - .mac_config = dsa_slave_phylink_mac_config, - .mac_an_restart = dsa_slave_phylink_mac_an_restart, - .mac_link_down = dsa_slave_phylink_mac_link_down, - .mac_link_up = dsa_slave_phylink_mac_link_up, -}; - -void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up) -{ - const struct dsa_port *dp = dsa_to_port(ds, port); - - phylink_mac_change(dp->pl, up); -} -EXPORT_SYMBOL_GPL(dsa_port_phylink_mac_change); - -static void dsa_slave_phylink_fixed_state(struct net_device *dev, - struct phylink_link_state *state) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_switch *ds = dp->ds; - - /* No need to check that this operation is valid, the callback would - * not be called if it was not. - */ - ds->ops->phylink_fixed_state(ds, dp->index, state); -} - -/* slave device setup *******************************************************/ -static int dsa_slave_phy_connect(struct net_device *slave_dev, int addr) -{ - struct dsa_port *dp = dsa_slave_to_port(slave_dev); - struct dsa_switch *ds = dp->ds; - - slave_dev->phydev = mdiobus_get_phy(ds->slave_mii_bus, addr); - if (!slave_dev->phydev) { - netdev_err(slave_dev, "no phy at %d\n", addr); - return -ENODEV; - } - - return phylink_connect_phy(dp->pl, slave_dev->phydev); -} - -static int dsa_slave_phy_setup(struct net_device *slave_dev) -{ - struct dsa_port *dp = dsa_slave_to_port(slave_dev); - struct device_node *port_dn = dp->dn; - struct dsa_switch *ds = dp->ds; - u32 phy_flags = 0; - int mode, ret; - - mode = of_get_phy_mode(port_dn); - if (mode < 0) - mode = PHY_INTERFACE_MODE_NA; - - dp->pl = phylink_create(slave_dev, of_fwnode_handle(port_dn), mode, - &dsa_slave_phylink_mac_ops); - if (IS_ERR(dp->pl)) { - netdev_err(slave_dev, - "error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); - return PTR_ERR(dp->pl); - } - - /* Register only if the switch provides such a callback, since this - * callback takes precedence over polling the link GPIO in PHYLINK - * (see phylink_get_fixed_state). - */ - if (ds->ops->phylink_fixed_state) - phylink_fixed_state_cb(dp->pl, dsa_slave_phylink_fixed_state); - - if (ds->ops->get_phy_flags) - phy_flags = ds->ops->get_phy_flags(ds, dp->index); - - ret = phylink_of_phy_connect(dp->pl, port_dn, phy_flags); - if (ret == -ENODEV) { - /* We could not connect to a designated PHY or SFP, so use the - * switch internal MDIO bus instead - */ - ret = dsa_slave_phy_connect(slave_dev, dp->index); - if (ret) { - netdev_err(slave_dev, - "failed to connect to port %d: %d\n", - dp->index, ret); - phylink_destroy(dp->pl); - return ret; - } - } - - return 0; -} - -static struct lock_class_key dsa_slave_netdev_xmit_lock_key; -static void dsa_slave_set_lockdep_class_one(struct net_device *dev, - struct netdev_queue *txq, - void *_unused) -{ - lockdep_set_class(&txq->_xmit_lock, - &dsa_slave_netdev_xmit_lock_key); -} - -int dsa_slave_suspend(struct net_device *slave_dev) -{ - struct dsa_port *dp = dsa_slave_to_port(slave_dev); - - if (!netif_running(slave_dev)) - return 0; - - netif_device_detach(slave_dev); - - rtnl_lock(); - phylink_stop(dp->pl); - rtnl_unlock(); - - return 0; -} - -int dsa_slave_resume(struct net_device *slave_dev) -{ - struct dsa_port *dp = dsa_slave_to_port(slave_dev); - - if (!netif_running(slave_dev)) - return 0; - - netif_device_attach(slave_dev); - - rtnl_lock(); - phylink_start(dp->pl); - rtnl_unlock(); - - return 0; -} - -static void dsa_slave_notify(struct net_device *dev, unsigned long val) -{ - struct net_device *master = dsa_slave_to_master(dev); - struct dsa_port *dp = dsa_slave_to_port(dev); - struct dsa_notifier_register_info rinfo = { - .switch_number = dp->ds->index, - .port_number = dp->index, - .master = master, - .info.dev = dev, - }; - - call_dsa_notifiers(val, dev, &rinfo.info); -} - -int dsa_slave_create(struct dsa_port *port) -{ - const struct dsa_port *cpu_dp = port->cpu_dp; - struct net_device *master = cpu_dp->master; - struct dsa_switch *ds = port->ds; - const char *name = port->name; - struct net_device *slave_dev; - struct dsa_slave_priv *p; - int ret; - - if (!ds->num_tx_queues) - ds->num_tx_queues = 1; - - slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name, - NET_NAME_UNKNOWN, ether_setup, - ds->num_tx_queues, 1); - if (slave_dev == NULL) - return -ENOMEM; - - slave_dev->features = master->vlan_features | NETIF_F_HW_TC; - slave_dev->hw_features |= NETIF_F_HW_TC; - slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; - eth_hw_addr_inherit(slave_dev, master); - slave_dev->priv_flags |= IFF_NO_QUEUE; - slave_dev->netdev_ops = &dsa_slave_netdev_ops; - slave_dev->switchdev_ops = &dsa_slave_switchdev_ops; - slave_dev->min_mtu = 0; - slave_dev->max_mtu = ETH_MAX_MTU; - SET_NETDEV_DEVTYPE(slave_dev, &dsa_type); - - netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one, - NULL); - - SET_NETDEV_DEV(slave_dev, port->ds->dev); - slave_dev->dev.of_node = port->dn; - slave_dev->vlan_features = master->vlan_features; - - p = netdev_priv(slave_dev); - p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); - if (!p->stats64) { - free_netdev(slave_dev); - return -ENOMEM; - } - p->dp = port; - INIT_LIST_HEAD(&p->mall_tc_list); - p->xmit = cpu_dp->tag_ops->xmit; - port->slave = slave_dev; - - netif_carrier_off(slave_dev); - - ret = dsa_slave_phy_setup(slave_dev); - if (ret) { - netdev_err(master, "error %d setting up slave phy\n", ret); - goto out_free; - } - - dsa_slave_notify(slave_dev, DSA_PORT_REGISTER); - - ret = register_netdev(slave_dev); - if (ret) { - netdev_err(master, "error %d registering interface %s\n", - ret, slave_dev->name); - goto out_phy; - } - - return 0; - -out_phy: - rtnl_lock(); - phylink_disconnect_phy(p->dp->pl); - rtnl_unlock(); - phylink_destroy(p->dp->pl); -out_free: - free_percpu(p->stats64); - free_netdev(slave_dev); - port->slave = NULL; - return ret; -} - -void dsa_slave_destroy(struct net_device *slave_dev) -{ - struct dsa_port *dp = dsa_slave_to_port(slave_dev); - struct dsa_slave_priv *p = netdev_priv(slave_dev); - - netif_carrier_off(slave_dev); - rtnl_lock(); - phylink_disconnect_phy(dp->pl); - rtnl_unlock(); - - dsa_slave_notify(slave_dev, DSA_PORT_UNREGISTER); - unregister_netdev(slave_dev); - phylink_destroy(dp->pl); - free_percpu(p->stats64); - free_netdev(slave_dev); -} - -static bool dsa_slave_dev_check(struct net_device *dev) -{ - return dev->netdev_ops == &dsa_slave_netdev_ops; -} - -static int dsa_slave_changeupper(struct net_device *dev, - struct netdev_notifier_changeupper_info *info) -{ - struct dsa_port *dp = dsa_slave_to_port(dev); - int err = NOTIFY_DONE; - - if (netif_is_bridge_master(info->upper_dev)) { - if (info->linking) { - err = dsa_port_bridge_join(dp, info->upper_dev); - err = notifier_from_errno(err); - } else { - dsa_port_bridge_leave(dp, info->upper_dev); - err = NOTIFY_OK; - } - } - - return err; -} - -static int dsa_slave_netdevice_event(struct notifier_block *nb, - unsigned long event, void *ptr) -{ - struct net_device *dev = netdev_notifier_info_to_dev(ptr); - - if (!dsa_slave_dev_check(dev)) - return NOTIFY_DONE; - - if (event == NETDEV_CHANGEUPPER) - return dsa_slave_changeupper(dev, ptr); - - return NOTIFY_DONE; -} - -struct dsa_switchdev_event_work { - struct work_struct work; - struct switchdev_notifier_fdb_info fdb_info; - struct net_device *dev; - unsigned long event; -}; - -static void dsa_slave_switchdev_event_work(struct work_struct *work) -{ - struct dsa_switchdev_event_work *switchdev_work = - container_of(work, struct dsa_switchdev_event_work, work); - struct net_device *dev = switchdev_work->dev; - struct switchdev_notifier_fdb_info *fdb_info; - struct dsa_port *dp = dsa_slave_to_port(dev); - int err; - - rtnl_lock(); - switch (switchdev_work->event) { - case SWITCHDEV_FDB_ADD_TO_DEVICE: - fdb_info = &switchdev_work->fdb_info; - if (!fdb_info->added_by_user) - break; - - err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid); - if (err) { - netdev_dbg(dev, "fdb add failed err=%d\n", err); - break; - } - fdb_info->offloaded = true; - call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev, - &fdb_info->info, NULL); - break; - - case SWITCHDEV_FDB_DEL_TO_DEVICE: - fdb_info = &switchdev_work->fdb_info; - if (!fdb_info->added_by_user) - break; - - err = dsa_port_fdb_del(dp, fdb_info->addr, fdb_info->vid); - if (err) { - netdev_dbg(dev, "fdb del failed err=%d\n", err); - dev_close(dev); - } - break; - } - rtnl_unlock(); - - kfree(switchdev_work->fdb_info.addr); - kfree(switchdev_work); - dev_put(dev); -} - -static int -dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work * - switchdev_work, - const struct switchdev_notifier_fdb_info * - fdb_info) -{ - memcpy(&switchdev_work->fdb_info, fdb_info, - sizeof(switchdev_work->fdb_info)); - switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); - if (!switchdev_work->fdb_info.addr) - return -ENOMEM; - ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, - fdb_info->addr); - return 0; -} - -/* Called under rcu_read_lock() */ -static int dsa_slave_switchdev_event(struct notifier_block *unused, - unsigned long event, void *ptr) -{ - struct net_device *dev = switchdev_notifier_info_to_dev(ptr); - struct dsa_switchdev_event_work *switchdev_work; - - if (!dsa_slave_dev_check(dev)) - return NOTIFY_DONE; - - switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); - if (!switchdev_work) - return NOTIFY_BAD; - - INIT_WORK(&switchdev_work->work, - dsa_slave_switchdev_event_work); - switchdev_work->dev = dev; - switchdev_work->event = event; - - switch (event) { - case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ - case SWITCHDEV_FDB_DEL_TO_DEVICE: - if (dsa_slave_switchdev_fdb_work_init(switchdev_work, ptr)) - goto err_fdb_work_init; - dev_hold(dev); - break; - default: - kfree(switchdev_work); - return NOTIFY_DONE; - } - - dsa_schedule_work(&switchdev_work->work); - return NOTIFY_OK; - -err_fdb_work_init: - kfree(switchdev_work); - return NOTIFY_BAD; -} - -static int -dsa_slave_switchdev_port_obj_event(unsigned long event, - struct net_device *netdev, - struct switchdev_notifier_port_obj_info *port_obj_info) -{ - int err = -EOPNOTSUPP; - - switch (event) { - case SWITCHDEV_PORT_OBJ_ADD: - err = dsa_slave_port_obj_add(netdev, port_obj_info->obj, - port_obj_info->trans); - break; - case SWITCHDEV_PORT_OBJ_DEL: - err = dsa_slave_port_obj_del(netdev, port_obj_info->obj); - break; - } - - port_obj_info->handled = true; - return notifier_from_errno(err); -} - -static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused, - unsigned long event, void *ptr) -{ - struct net_device *dev = switchdev_notifier_info_to_dev(ptr); - - if (!dsa_slave_dev_check(dev)) - return NOTIFY_DONE; - - switch (event) { - case SWITCHDEV_PORT_OBJ_ADD: /* fall through */ - case SWITCHDEV_PORT_OBJ_DEL: - return dsa_slave_switchdev_port_obj_event(event, dev, ptr); - } - - return NOTIFY_DONE; -} - -static struct notifier_block dsa_slave_nb __read_mostly = { - .notifier_call = dsa_slave_netdevice_event, -}; - -static struct notifier_block dsa_slave_switchdev_notifier = { - .notifier_call = dsa_slave_switchdev_event, -}; - -static struct notifier_block dsa_slave_switchdev_blocking_notifier = { - .notifier_call = dsa_slave_switchdev_blocking_event, -}; - -int dsa_slave_register_notifier(void) -{ - struct notifier_block *nb; - int err; - - err = register_netdevice_notifier(&dsa_slave_nb); - if (err) - return err; - - err = register_switchdev_notifier(&dsa_slave_switchdev_notifier); - if (err) - goto err_switchdev_nb; - - nb = &dsa_slave_switchdev_blocking_notifier; - err = register_switchdev_blocking_notifier(nb); - if (err) - goto err_switchdev_blocking_nb; - - return 0; - -err_switchdev_blocking_nb: - unregister_switchdev_notifier(&dsa_slave_switchdev_notifier); -err_switchdev_nb: - unregister_netdevice_notifier(&dsa_slave_nb); - return err; -} - -void dsa_slave_unregister_notifier(void) -{ - struct notifier_block *nb; - int err; - - nb = &dsa_slave_switchdev_blocking_notifier; - err = unregister_switchdev_blocking_notifier(nb); - if (err) - pr_err("DSA: failed to unregister switchdev blocking notifier (%d)\n", err); - - err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier); - if (err) - pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err); - - err = unregister_netdevice_notifier(&dsa_slave_nb); - if (err) - pr_err("DSA: failed to unregister slave notifier (%d)\n", err); -} |