diff --git a/package/kernel/mac80211/patches/subsys/400-v6.16-wifi-mac80211-do-not-offer-a-mesh-path-if-forwarding.patch b/package/kernel/mac80211/patches/subsys/400-v6.16-wifi-mac80211-do-not-offer-a-mesh-path-if-forwarding.patch new file mode 100644 index 00000000000..7c2c0b9f3fb --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/400-v6.16-wifi-mac80211-do-not-offer-a-mesh-path-if-forwarding.patch @@ -0,0 +1,56 @@ +From 0d47666f48a084363ee54f389bec2865de4934b8 Mon Sep 17 00:00:00 2001 +From: Benjamin Berg +Date: Wed, 30 Apr 2025 20:25:38 +0200 +Subject: [PATCH] wifi: mac80211: do not offer a mesh path if forwarding is + disabled + +When processing a PREQ the code would always check whether we have a +mesh path locally and reply accordingly. However, when forwarding is +disabled then we should not reply with this information as we will not +forward data packets down that path. + +Move the check for dot11MeshForwarding up in the function and skip the +mesh path lookup in that case. In the else block, set forward to false +so that the rest of the function becomes a no-op and the +dot11MeshForwarding check does not need to be duplicated. + +This explains an effect observed in the Freifunk community where mesh +forwarding is disabled. In that case a mesh with three STAs and only bad +links in between them, individual STAs would occionally have indirect +mpath entries. This should not have happened. + +Signed-off-by: Benjamin Berg +Reviewed-by: Rouven Czerwinski +--- + net/mac80211/mesh_hwmp.c | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +--- a/net/mac80211/mesh_hwmp.c ++++ b/net/mac80211/mesh_hwmp.c +@@ -630,7 +630,7 @@ static void hwmp_preq_frame_process(stru + mesh_path_add_gate(mpath); + } + rcu_read_unlock(); +- } else { ++ } else if (ifmsh->mshcfg.dot11MeshForwarding) { + rcu_read_lock(); + mpath = mesh_path_lookup(sdata, target_addr); + if (mpath) { +@@ -648,6 +648,8 @@ static void hwmp_preq_frame_process(stru + } + } + rcu_read_unlock(); ++ } else { ++ forward = false; + } + + if (reply) { +@@ -665,7 +667,7 @@ static void hwmp_preq_frame_process(stru + } + } + +- if (forward && ifmsh->mshcfg.dot11MeshForwarding) { ++ if (forward) { + u32 preq_id; + u8 hopcount; +