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Diffstat (limited to 'net/batman-adv/send.c')
-rw-r--r--net/batman-adv/send.c36
1 files changed, 24 insertions, 12 deletions
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 263cfd1ccee7..e9ff8d801201 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -61,7 +61,7 @@ int batadv_send_skb_packet(struct sk_buff *skb,
skb_reset_mac_header(skb);
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
+ ethhdr = eth_hdr(skb);
memcpy(ethhdr->h_source, hard_iface->net_dev->dev_addr, ETH_ALEN);
memcpy(ethhdr->h_dest, dst_addr, ETH_ALEN);
ethhdr->h_proto = __constant_htons(ETH_P_BATMAN);
@@ -96,26 +96,37 @@ send_skb_err:
* host, NULL can be passed as recv_if and no interface alternating is
* attempted.
*
- * Returns TRUE on success; FALSE otherwise.
+ * Returns NET_XMIT_SUCCESS on success, NET_XMIT_DROP on failure, or
+ * NET_XMIT_POLICED if the skb is buffered for later transmit.
*/
-bool batadv_send_skb_to_orig(struct sk_buff *skb,
- struct batadv_orig_node *orig_node,
- struct batadv_hard_iface *recv_if)
+int batadv_send_skb_to_orig(struct sk_buff *skb,
+ struct batadv_orig_node *orig_node,
+ struct batadv_hard_iface *recv_if)
{
struct batadv_priv *bat_priv = orig_node->bat_priv;
struct batadv_neigh_node *neigh_node;
+ int ret = NET_XMIT_DROP;
/* batadv_find_router() increases neigh_nodes refcount if found. */
neigh_node = batadv_find_router(bat_priv, orig_node, recv_if);
if (!neigh_node)
- return false;
+ return ret;
- /* route it */
- batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
+ /* 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 = NET_XMIT_POLICED;
+ } else {
+ batadv_send_skb_packet(skb, neigh_node->if_incoming,
+ neigh_node->addr);
+ ret = NET_XMIT_SUCCESS;
+ }
batadv_neigh_node_free_ref(neigh_node);
- return true;
+ return ret;
}
void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface)
@@ -152,8 +163,6 @@ _batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
struct batadv_forw_packet *forw_packet,
unsigned long send_time)
{
- INIT_HLIST_NODE(&forw_packet->list);
-
/* add new packet to packet list */
spin_lock_bh(&bat_priv->forw_bcast_list_lock);
hlist_add_head(&forw_packet->list, &bat_priv->forw_bcast_list);
@@ -260,6 +269,9 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
if (hard_iface->soft_iface != soft_iface)
continue;
+ if (forw_packet->num_packets >= hard_iface->num_bcasts)
+ continue;
+
/* send a copy of the saved skb */
skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC);
if (skb1)
@@ -271,7 +283,7 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
forw_packet->num_packets++;
/* if we still have some more bcasts to send */
- if (forw_packet->num_packets < 3) {
+ if (forw_packet->num_packets < BATADV_NUM_BCASTS_MAX) {
_batadv_add_bcast_packet_to_list(bat_priv, forw_packet,
msecs_to_jiffies(5));
return;