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geneve: Fix function matching VNI and tunnel ID on big-endian 

On big-endian machines, functions converting between tunnel ID
and VNI use the three LSBs of tunnel ID storage to map VNI.

The comparison function eq_tun_id_and_vni(), on the other hand,
attempted to map the VNI from the three MSBs. Fix it by using
the same check implemented on LE, which maps VNI from the three
LSBs of tunnel ID.

Fixes: 2e0b26e103 ("geneve: Optimize geneve device lookup.")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Jakub Sitnicki <jkbs@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefano Brivio 2017-10-19 13:31:28 +02:00 committed by David S. Miller
parent c69d75ae15
commit 772e97b57a
1 changed files with 0 additions and 6 deletions
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6
drivers/net/geneve.c
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@ -113,13 +113,7 @@ static void tunnel_id_to_vni(__be64 tun_id, __u8 *vni)
static bool eq_tun_id_and_vni(u8 *tun_id, u8 *vni)
{
#ifdef __BIG_ENDIAN
return (vni[0] == tun_id[2]) &&
(vni[1] == tun_id[1]) &&
(vni[2] == tun_id[0]);
#else
return !memcmp(vni, &tun_id[5], 3);
#endif
}
static sa_family_t geneve_get_sk_family(struct geneve_sock *gs)