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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

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2023-02-26 20:35:40 +01:00
parent 2f96580c52
commit 1272cb0a0d
1 changed files with 52 additions and 0 deletions
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52
package/kernel/mac80211/patches/subsys/322-wifi-mac80211-fix-mesh-path-discovery-based-on-unica.patch Normal file
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@ -0,0 +1,52 @@
From: Felix Fietkau <nbd@nbd.name>
Date: Sun, 26 Feb 2023 20:30:20 +0100
Subject: [PATCH] wifi: mac80211: fix mesh path discovery based on unicast
packets
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
Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2824,17 +2824,6 @@ ieee80211_rx_mesh_data(struct ieee80211_
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;
@@ -2881,6 +2870,17 @@ ieee80211_rx_mesh_data(struct ieee80211_
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]);
if (!multicast &&