[B.A.T.M.A.N.] [PATCHv2 2/2] batman-adv: fix bla compare function

[Simon Wunderlich]

The address and the VLAN VID may not be packed in the respective
structs. Fix this by comparing the elements individually.

Reported-by: Marek Lindner <lindner_ma...@yahoo.de>
Reported-by: Sven Eckelmann <s...@narfation.org>
Signed-off-by: Simon Wunderlich <s...@hrz.tu-chemnitz.de>
---
 bridge_loop_avoidance.c |   18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/bridge_loop_avoidance.c b/bridge_loop_avoidance.c
index 758d921..a617f2c 100644
--- a/bridge_loop_avoidance.c
+++ b/bridge_loop_avoidance.c
@@ -77,8 +77,15 @@ static int batadv_compare_backbone_gw(const struct 
hlist_node *node,
 {
        const void *data1 = container_of(node, struct batadv_backbone_gw,
                                         hash_entry);
+       const struct batadv_backbone_gw *gw1 = data1, *gw2 = data2;
 
-       return (memcmp(data1, data2, ETH_ALEN + sizeof(short)) == 0 ? 1 : 0);
+       if (memcmp(gw1->orig, gw2->orig, ETH_ALEN))
+               return 0;
+
+       if (gw1->vid != gw2->vid)
+               return 0;
+
+       return 1;
 }
 
 /* compares address and vid of two claims */
@@ -87,8 +94,15 @@ static int batadv_compare_claim(const struct hlist_node 
*node,
 {
        const void *data1 = container_of(node, struct batadv_claim,
                                         hash_entry);
+       const struct batadv_claim *cl1 = data1, *cl2 = data2;
 
-       return (memcmp(data1, data2, ETH_ALEN + sizeof(short)) == 0 ? 1 : 0);
+       if (memcmp(cl1->addr, cl2->addr, ETH_ALEN))
+               return 0;
+
+       if (cl1->vid != cl2->vid)
+               return 0;
+
+       return 1;
 }
 
 /* free a backbone gw */
-- 
1.7.10