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mac80211: Learn about mesh portals from multicast traffic

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Mesh portals proxy traffic for nodes external to the mesh.  When a
proxied frame is received by a mesh interface, it should update its mesh
portal table.  This was only happening for unicast frames.  With this
change we also learn about mesh portals from proxied multicast frames.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Javier Cardona 2009-10-15 18:10:51 -07:00 committed by John W. Linville
parent a9b3a9f721
commit 43b7b314f6
1 changed files with 15 additions and 6 deletions
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21
net/mac80211/rx.c
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@ -1504,19 +1504,28 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
/* illegal frame */
return RX_DROP_MONITOR;
if (!is_multicast_ether_addr(hdr->addr1) &&
(mesh_hdr->flags & MESH_FLAGS_AE_A5_A6)) {
if (mesh_hdr->flags & MESH_FLAGS_AE) {
struct mesh_path *mppath;
char *proxied_addr;
char *mpp_addr;
if (is_multicast_ether_addr(hdr->addr1)) {
mpp_addr = hdr->addr3;
proxied_addr = mesh_hdr->eaddr1;
} else {
mpp_addr = hdr->addr4;
proxied_addr = mesh_hdr->eaddr2;
}
rcu_read_lock();
mppath = mpp_path_lookup(mesh_hdr->eaddr2, sdata);
mppath = mpp_path_lookup(proxied_addr, sdata);
if (!mppath) {
mpp_path_add(mesh_hdr->eaddr2, hdr->addr4, sdata);
mpp_path_add(proxied_addr, mpp_addr, sdata);
} else {
spin_lock_bh(&mppath->state_lock);
mppath->exp_time = jiffies;
if (compare_ether_addr(mppath->mpp, hdr->addr4) != 0)
memcpy(mppath->mpp, hdr->addr4, ETH_ALEN);
if (compare_ether_addr(mppath->mpp, mpp_addr) != 0)
memcpy(mppath->mpp, mpp_addr, ETH_ALEN);
spin_unlock_bh(&mppath->state_lock);
}
rcu_read_unlock();