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authorFelix Fietkau <nbd@nbd.name>2018-01-19 18:34:10 +0100
committerFelix Fietkau <nbd@nbd.name>2018-01-25 10:54:14 +0100
commit166741240afd396c41b284edaa5180b162232741 (patch)
treebe95d3166bf91178873f5a7ddc2518bf50c15b9d
parent21d3643828187df873118c4c2a51a48c54e0f6b1 (diff)
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mac80211: mesh: drop frames appearing to be from us
Upstream backport to fix issues arising from devices with duplicate MAC addresses Signed-off-by: Felix Fietkau <nbd@nbd.name>
-rw-r--r--package/kernel/mac80211/patches/323-mac80211-mesh-drop-frames-appearing-to-be-from-us.patch25
1 files changed, 25 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/323-mac80211-mesh-drop-frames-appearing-to-be-from-us.patch b/package/kernel/mac80211/patches/323-mac80211-mesh-drop-frames-appearing-to-be-from-us.patch
new file mode 100644
index 0000000000..839e927880
--- /dev/null
+++ b/package/kernel/mac80211/patches/323-mac80211-mesh-drop-frames-appearing-to-be-from-us.patch
@@ -0,0 +1,25 @@
+From: Johannes Berg <johannes.berg@intel.com>
+Date: Thu, 4 Jan 2018 15:51:53 +0100
+Subject: [PATCH] mac80211: mesh: drop frames appearing to be from us
+
+If there are multiple mesh stations with the same MAC address,
+they will both get confused and start throwing warnings.
+
+Obviously in this case nothing can actually work anyway, so just
+drop frames that look like they're from ourselves early on.
+
+Reported-by: Gui Iribarren <gui@altermundi.net>
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+---
+
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -3632,6 +3632,8 @@ static bool ieee80211_accept_frame(struc
+ }
+ return true;
+ case NL80211_IFTYPE_MESH_POINT:
++ if (ether_addr_equal(sdata->vif.addr, hdr->addr2))
++ return false;
+ if (multicast)
+ return true;
+ return ether_addr_equal(sdata->vif.addr, hdr->addr1);