| Message ID | 1291510912-6979-1-git-send-email-xiaosuo@gmail.com |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
On Sun, 2010-12-05 at 09:01 +0800, Changli Gao wrote: > rq and tq are both protected by tx queue lock, so we can simply use > the lockless variants of skb_queue. > > skb_queue_splice_tail_init() is used instead of the open coded and slow > one. > > Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> cheers, jamal -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
From: jamal <hadi@cyberus.ca> Date: Sun, 05 Dec 2010 09:26:20 -0500 > On Sun, 2010-12-05 at 09:01 +0800, Changli Gao wrote: >> rq and tq are both protected by tx queue lock, so we can simply use >> the lockless variants of skb_queue. >> >> skb_queue_splice_tail_init() is used instead of the open coded and slow >> one. >> >> Signed-off-by: Changli Gao <xiaosuo@gmail.com> > > Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> I've applied the most up to date versions of all 3 of Changli's IFB patches, thanks! -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c index d1e362a..9825f11 100644 --- a/drivers/net/ifb.c +++ b/drivers/net/ifb.c @@ -63,9 +63,7 @@ static void ri_tasklet(unsigned long dev) txq = netdev_get_tx_queue(_dev, 0); if ((skb = skb_peek(&dp->tq)) == NULL) { if (__netif_tx_trylock(txq)) { - while ((skb = skb_dequeue(&dp->rq)) != NULL) { - skb_queue_tail(&dp->tq, skb); - } + skb_queue_splice_tail_init(&dp->rq, &dp->tq); __netif_tx_unlock(txq); } else { /* reschedule */ @@ -161,7 +159,7 @@ static netdev_tx_t ifb_xmit(struct sk_buff *skb, struct net_device *dev) netif_stop_queue(dev); } - skb_queue_tail(&dp->rq, skb); + __skb_queue_tail(&dp->rq, skb); if (!dp->tasklet_pending) { dp->tasklet_pending = 1; tasklet_schedule(&dp->ifb_tasklet); @@ -176,8 +174,8 @@ static int ifb_close(struct net_device *dev) tasklet_kill(&dp->ifb_tasklet); netif_stop_queue(dev); - skb_queue_purge(&dp->rq); - skb_queue_purge(&dp->tq); + __skb_queue_purge(&dp->rq); + __skb_queue_purge(&dp->tq); return 0; } @@ -186,8 +184,8 @@ static int ifb_open(struct net_device *dev) struct ifb_private *dp = netdev_priv(dev); tasklet_init(&dp->ifb_tasklet, ri_tasklet, (unsigned long)dev); - skb_queue_head_init(&dp->rq); - skb_queue_head_init(&dp->tq); + __skb_queue_head_init(&dp->rq); + __skb_queue_head_init(&dp->tq); netif_start_queue(dev); return 0;
rq and tq are both protected by tx queue lock, so we can simply use the lockless variants of skb_queue. skb_queue_splice_tail_init() is used instead of the open coded and slow one. Signed-off-by: Changli Gao <xiaosuo@gmail.com> --- drivers/net/ifb.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html