package/kernel/mac80211/patches/302-v4.15-mac80211-mesh-drop-frames-appearing-to-be-from-us.patch

   1 From: Johannes Berg <johannes.berg@intel.com>
   2 Date: Thu, 4 Jan 2018 15:51:53 +0100
   3 Subject: [PATCH] mac80211: mesh: drop frames appearing to be from us
   4
   5 If there are multiple mesh stations with the same MAC address,
   6 they will both get confused and start throwing warnings.
   7
   8 Obviously in this case nothing can actually work anyway, so just
   9 drop frames that look like they're from ourselves early on.
  10
  11 Reported-by: Gui Iribarren <gui@altermundi.net>
  12 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  13 ---
  14
  15 --- a/net/mac80211/rx.c
  16 +++ b/net/mac80211/rx.c
  17 @@ -3632,6 +3632,8 @@ static bool ieee80211_accept_frame(struc
  18                 }
  19                 return true;
  20         case NL80211_IFTYPE_MESH_POINT:
  21 +               if (ether_addr_equal(sdata->vif.addr, hdr->addr2))
  22 +                       return false;
  23                 if (multicast)
  24                         return true;
  25                 return ether_addr_equal(sdata->vif.addr, hdr->addr1);