openwrtv3/package/kernel/mac80211/patches/323-v4.15-mac80211-mesh-drop-frames-appearing-to-be-from-us.patch
Rafał Miłecki a186c2ab70 mac80211: rename patches accepted upstream
This is to simplify maintenance. It's easy to say now which patches need
some extra work and/or sending upstream. Updating to newer backports
should be also simpler with this.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-03-01 13:54:42 +01:00

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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);