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mac80211: add fix for receiving STP frames on mesh

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Fix length in ethernet header

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2023-07-11 14:38:06 +02:00
parent 8674b41c0d
commit 8f7be2a2ba
1 changed files with 25 additions and 0 deletions
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package/kernel/mac80211/patches/subsys/339-wifi-cfg80211-fix-receving-mesh-packets-without-RFC1.patch Normal file
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From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 11 Jul 2023 13:30:12 +0200
Subject: [PATCH] wifi: cfg80211: fix receving mesh packets without RFC1042
header
Fix ethernet header length field after stripping the mesh header
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/CT5GNZSK28AI.2K6M69OXM9RW5@syracuse/
Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces")
Reported-by: Nicolas Escande <nico.escande@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -580,6 +580,8 @@ int ieee80211_strip_8023_mesh_hdr(struct
hdrlen += ETH_ALEN + 2;
else if (!pskb_may_pull(skb, hdrlen))
return -EINVAL;
+ else
+ payload.eth.h_proto = htons(skb->len - hdrlen);
mesh_addr = skb->data + sizeof(payload.eth) + ETH_ALEN;
switch (payload.flags & MESH_FLAGS_AE) {