When the bonding device senses a carrier loss of its active slave it replaces that slave with a new one. In between the times when the carrier of an IPoIB device goes down and ipoib_neigh is destroyed, it is possible that the bonding driver will send a packet on a new slave that uses an old ipoib_neigh. This patch detects and prevents this from happenning.
Signed-off-by: Moni Shoua <monis at voltaire.com> Signed-off-by: Or Gerlitz <ogerlitz at voltaire.com> --- drivers/infiniband/ulp/ipoib/ipoib_main.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) Index: net-2.6/drivers/infiniband/ulp/ipoib/ipoib_main.c =================================================================== --- net-2.6.orig/drivers/infiniband/ulp/ipoib/ipoib_main.c 2007-09-18 17:09:26.535874225 +0200 +++ net-2.6/drivers/infiniband/ulp/ipoib/ipoib_main.c 2007-09-18 17:10:22.375853147 +0200 @@ -686,9 +686,10 @@ static int ipoib_start_xmit(struct sk_bu goto out; } } else if (neigh->ah) { - if (unlikely(memcmp(&neigh->dgid.raw, + if (unlikely((memcmp(&neigh->dgid.raw, skb->dst->neighbour->ha + 4, - sizeof(union ib_gid)))) { + sizeof(union ib_gid))) || + (neigh->dev != dev))) { spin_lock(&priv->lock); /* * It's safe to call ipoib_put_ah() inside - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html