[linux-next] LinuxNextTracking branch, master, updated. next-20180328

batman at open-mesh.org batman at open-mesh.org
Thu Mar 29 00:16:37 CEST 2018

The following commit has been merged in the master branch:
commit f8fb3419ead44f9a3136995acd24e35da4525177
Author: Linus Lüssing <linus.luessing at c0d3.blue>
Date:   Tue Mar 20 03:13:27 2018 +0100

    batman-adv: fix multicast-via-unicast transmission with AP isolation
    For multicast frames AP isolation is only supposed to be checked on
    the receiving nodes and never on the originating one.
    Furthermore, the isolation or wifi flag bits should only be intepreted
    as such for unicast and never multicast TT entries.
    By injecting flags to the multicast TT entry claimed by a single
    target node it was verified in tests that this multicast address
    becomes unreachable, leading to packet loss.
    Omitting the "src" parameter to the batadv_transtable_search() call
    successfully skipped the AP isolation check and made the target
    reachable again.
    Fixes: 1d8ab8d3c176 ("batman-adv: Modified forwarding behaviour for multicast packets")
    Signed-off-by: Linus Lüssing <linus.luessing at c0d3.blue>
    Signed-off-by: Sven Eckelmann <sven at narfation.org>
    Signed-off-by: Simon Wunderlich <sw at simonwunderlich.de>

diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index d70640135e3a..ee56af5c43e0 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -814,8 +814,8 @@ static struct batadv_orig_node *
 batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv,
 			      struct ethhdr *ethhdr)
-	return batadv_transtable_search(bat_priv, ethhdr->h_source,
-					ethhdr->h_dest, BATADV_NO_FLAGS);
+	return batadv_transtable_search(bat_priv, NULL, ethhdr->h_dest,


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