cxgb4: implement EEH

Implement the pci_error_handlers methods for EEH.

Signed-off-by: Dimitris Michailidis <dm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cxgb4/l2t.c b/drivers/net/cxgb4/l2t.c
index 9f96724..5b990d2 100644
--- a/drivers/net/cxgb4/l2t.c
+++ b/drivers/net/cxgb4/l2t.c
@@ -310,6 +310,13 @@
 			neigh_release(e->neigh);
 			e->neigh = NULL;
 		}
+		while (e->arpq_head) {
+			struct sk_buff *skb = e->arpq_head;
+
+			e->arpq_head = skb->next;
+			kfree(skb);
+		}
+		e->arpq_tail = NULL;
 	}
 	spin_unlock_bh(&e->lock);