[PATCH] netpoll transmit busy bugfix

Matt Mackall
2004-04-10T20:35:18Z

Fix for handling of full transmit queue when netpoll trap is enabled.

>From Stelian Pop <stelian@popies.net>

%patch
Index: mm/net/core/netpoll.c
===================================================================
--- mm.orig/net/core/netpoll.c 2004-04-10 15:15:25.000000000 -0500
+++ mm/net/core/netpoll.c 2004-04-10 15:19:31.000000000 -0500
@@ -163,21 +163,15 @@
spin_lock(&np->dev->xmit_lock);
np->dev->xmit_lock_owner = smp_processor_id();

- if (netif_queue_stopped(np->dev)) {
- np->dev->xmit_lock_owner = -1;
- spin_unlock(&np->dev->xmit_lock);
-
- netpoll_poll(np);
- goto repeat;
- }
-
status = np->dev->hard_start_xmit(skb, np->dev);
np->dev->xmit_lock_owner = -1;
spin_unlock(&np->dev->xmit_lock);

/* transmit busy */
- if(status)
+ if(status) {
+ netpoll_poll(np);
goto repeat;
+ }
}

void netpoll_send_udp(struct netpoll *np, const char *msg, int len)

%diffstat
netpoll.c | 12 +++---------
1 files changed, 3 insertions(+), 9 deletions(-)

--
Matt Mackall : http://www.selenic.com : Linux development and consulting