diff options
| author | Andrew Morton <akpm@osdl.org> | 2006-12-09 14:01:49 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-11 14:34:36 -0800 |
| commit | e37b8d931936f88e4b2af66304eb44e69510b86c (patch) | |
| tree | 3d4dc0521dab807f11b107db494e8c0f24eeba00 | |
| parent | 2653a47b8953f500be13207bdcbcfe803bc40c88 (diff) | |
| download | linux-e37b8d931936f88e4b2af66304eb44e69510b86c.tar.bz2 | |
[NETPOLL]: Make sure TX lock is taken with BH disabled.
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/netpoll.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 8a271285f2f3..156d7fd81fec 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -242,22 +242,26 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) /* don't get messages out of order, and no recursion */ if (skb_queue_len(&npinfo->txq) == 0 && - npinfo->poll_owner != smp_processor_id() && - netif_tx_trylock(dev)) { - /* try until next clock tick */ - for (tries = jiffies_to_usecs(1)/USEC_PER_POLL; tries > 0; --tries) { - if (!netif_queue_stopped(dev)) - status = dev->hard_start_xmit(skb, dev); - - if (status == NETDEV_TX_OK) - break; - - /* tickle device maybe there is some cleanup */ - netpoll_poll(np); - - udelay(USEC_PER_POLL); + npinfo->poll_owner != smp_processor_id()) { + local_bh_disable(); /* Where's netif_tx_trylock_bh()? */ + if (netif_tx_trylock(dev)) { + /* try until next clock tick */ + for (tries = jiffies_to_usecs(1)/USEC_PER_POLL; + tries > 0; --tries) { + if (!netif_queue_stopped(dev)) + status = dev->hard_start_xmit(skb, dev); + + if (status == NETDEV_TX_OK) + break; + + /* tickle device maybe there is some cleanup */ + netpoll_poll(np); + + udelay(USEC_PER_POLL); + } + netif_tx_unlock(dev); } - netif_tx_unlock(dev); + local_bh_enable(); } if (status != NETDEV_TX_OK) { |