diff options
authorErez Shitrit <>2016-06-04 15:15:19 +0300
committerDoug Ledford <>2016-06-07 10:49:48 -0400
commit61c78eea9516a921799c17b4c20558e2aa780fd3 (patch)
parentf879ee8d900fc78b5bc5d840edd9ecb57d02ab7e (diff)
IB/IPoIB: Don't update neigh validity for unresolved entries
ipoib_neigh_get unconditionally updates the "alive" variable member on any packet send. This prevents the neighbor garbage collection from cleaning out a dead neighbor entry if we are still queueing packets for it. If the queue for this neighbor is full, then don't update the alive timestamp. That way the neighbor can time out even if packets are still being queued as long as none of them are being sent. Fixes: b63b70d87741 ("IPoIB: Use a private hash table for path lookup in xmit path") Signed-off-by: Erez Shitrit <> Signed-off-by: Leon Romanovsky <> Signed-off-by: Doug Ledford <>
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 248da5015093..5f58c41ef787 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1206,7 +1206,9 @@ struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr)
neigh = NULL;
goto out_unlock;
- neigh->alive = jiffies;
+ if (likely(skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE))
+ neigh->alive = jiffies;
goto out_unlock;