diff options
| author | Erez Shitrit <erezsh@mellanox.com> | 2015-04-02 13:39:03 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-04-15 16:06:19 -0400 |
| commit | 1e85b806f9b988ce2e465fb0f86c8cca228d83a9 (patch) | |
| tree | 97b9813ed07deee930c193c8ca80e912e75b09fb /drivers/infiniband | |
| parent | 2c0107309550b332f83f8be366521557f4b3fd5a (diff) | |
IB/ipoib: Save only IPOIB_MAX_PATH_REC_QUEUE skb's
Whenever there is no path->ah to the destination, keep only defined
number of skb's. Otherwise there are cases that the driver can keep
infinite list of skb's.
For example, when one device want to send unicast arp to the destination,
and from some reason the SM doesn't respond, the driver currently keeps
all the skb's. If that unicast arp traffic stopped, all these skb's
are kept by the path object till the interface is down.
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_main.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 176b3dfb49c3..7cad4dd87469 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -640,8 +640,10 @@ static void neigh_add_path(struct sk_buff *skb, u8 *daddr, if (!path->query && path_rec_start(dev, path)) goto err_path; - - __skb_queue_tail(&neigh->queue, skb); + if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) + __skb_queue_tail(&neigh->queue, skb); + else + goto err_drop; } spin_unlock_irqrestore(&priv->lock, flags); @@ -676,7 +678,12 @@ static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev, new_path = 1; } if (path) { - __skb_queue_tail(&path->queue, skb); + if (skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) { + __skb_queue_tail(&path->queue, skb); + } else { + ++dev->stats.tx_dropped; + dev_kfree_skb_any(skb); + } if (!path->query && path_rec_start(dev, path)) { spin_unlock_irqrestore(&priv->lock, flags); |