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wifi: mac80211: fix mesh path discovery based on unicast packets

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If a packet has reached its intended destination, it was bumped to the code
that accepts it, without first checking if a mesh_path needs to be created
based on the discovered source.
Fix this by moving the destination address check further down.

Cc: stable@vger.kernel.org
Fixes: 986e43b19a ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230314095956.62085-3-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2023-03-14 10:59:52 +01:00 committed by Johannes Berg
parent 4e348c6c6e
commit f355f70145
1 changed files with 11 additions and 11 deletions
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22
net/mac80211/rx.c
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@ -2765,17 +2765,6 @@ ieee80211_rx_mesh_data(struct ieee80211_sub_if_data *sdata, struct sta_info *sta
mesh_rmc_check(sdata, eth->h_source, mesh_hdr))
return RX_DROP_MONITOR;
/* Frame has reached destination. Don't forward */
if (ether_addr_equal(sdata->vif.addr, eth->h_dest))
goto rx_accept;
if (!ifmsh->mshcfg.dot11MeshForwarding) {
if (is_multicast_ether_addr(eth->h_dest))
goto rx_accept;
return RX_DROP_MONITOR;
}
/* forward packet */
if (sdata->crypto_tx_tailroom_needed_cnt)
tailroom = IEEE80211_ENCRYPT_TAILROOM;
@ -2814,6 +2803,17 @@ ieee80211_rx_mesh_data(struct ieee80211_sub_if_data *sdata, struct sta_info *sta
rcu_read_unlock();
}
/* Frame has reached destination. Don't forward */
if (ether_addr_equal(sdata->vif.addr, eth->h_dest))
goto rx_accept;
if (!ifmsh->mshcfg.dot11MeshForwarding) {
if (is_multicast_ether_addr(eth->h_dest))
goto rx_accept;
return RX_DROP_MONITOR;
}
skb_set_queue_mapping(skb, ieee802_1d_to_ac[skb->priority]);
ieee80211_fill_mesh_addresses(&hdr, &hdr.frame_control,