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authorChangli Gao <xiaosuo@gmail.com>2010-12-04 17:09:08 +0300
committerDavid S. Miller <davem@davemloft.net>2010-12-08 20:45:34 +0300
commit75c1c82566f23dd539fb7ccbf57a1caa7ba82628 (patch)
treebc88a871b3d1f9b1dcd5b9722c0edbea8a465faa /drivers/net/ifb.c
parentb1afde60f2b9ee8444fba4e012dc99a3b28d224d (diff)
downloadlinux-75c1c82566f23dd539fb7ccbf57a1caa7ba82628.tar.xz
ifb: goto resched directly if error happens and dp->tq isn't empty
If we break the loop when there are still skbs in tq and no skb in rq, the skbs will be left in txq until new skbs are enqueued into rq. In rare cases, no new skb is queued, then these skbs will stay in rq forever. After this patch, if tq isn't empty when we break the loop, we goto resched directly. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ifb.c')
-rw-r--r--drivers/net/ifb.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index ab9f675c5b8b..fe337bd121aa 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -104,6 +104,8 @@ static void ri_tasklet(unsigned long dev)
rcu_read_unlock();
dev_kfree_skb(skb);
stats->tx_dropped++;
+ if (skb_queue_len(&dp->tq) != 0)
+ goto resched;
break;
}
rcu_read_unlock();