[PATCH] IPoIB: set skb->mac.raw on receive

Set skb->mac.raw on receive.  This fixes crashes when this is
dereferenced, for example by netfilter or when PF_PACKET is used.

Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/infiniband/ulp/ipoib/ipoib_ib.c

@@ -201,7 +201,7 @@ static void ipoib_ib_handle_wc(struct net_device *dev,
 			if (wc->slid != priv->local_lid ||
 			    wc->src_qp != priv->qp->qp_num) {
 				skb->protocol = ((struct ipoib_header *) skb->data)->proto;
-
+				skb->mac.raw = skb->data;
 				skb_pull(skb, IPOIB_ENCAP_LEN);
 
 				dev->last_rx = jiffies;