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

Signed-off-by: Felix Fietkau <[email protected]>

package/kernel/mac80211/patches/subsys/322-wifi-mac80211-fix-mesh-path-discovery-based-on-unica.patch

@@ -0,0 +1,52 @@
+From: Felix Fietkau <[email protected]>
+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 <[email protected]>
+---
+
+--- 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 &&