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netpoll deferred transmit path

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When the netpoll beast got busy, he tended to babble.
Instead of talking out of his large mouth as normal,
he tended to try to snort out other orifices. This lead
to words (skbs) ending up in odd places (like NIT) that
he did not intend.

The normal way of talking wouldn't work, but he could
at least change to using the same tone all the time.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
This commit is contained in:
Stephen Hemminger 2006-10-26 15:46:53 -07:00 committed by David S. Miller
parent b41848b61b
commit 6c43ff18f9
1 changed files with 19 additions and 2 deletions
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21
net/core/netpoll.c
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@ -55,9 +55,25 @@ static void queue_process(void *p)
struct netpoll_info *npinfo = p;
struct sk_buff *skb;
while ((skb = skb_dequeue(&npinfo->txq)))
dev_queue_xmit(skb);
while ((skb = skb_dequeue(&npinfo->txq))) {
struct net_device *dev = skb->dev;
if (!netif_device_present(dev) || !netif_running(dev)) {
__kfree_skb(skb);
continue;
}
netif_tx_lock_bh(dev);
if (netif_queue_stopped(dev) ||
dev->hard_start_xmit(skb, dev) != NETDEV_TX_OK) {
skb_queue_head(&npinfo->txq, skb);
netif_tx_unlock_bh(dev);
schedule_delayed_work(&npinfo->tx_work, HZ/10);
return;
}
netif_tx_unlock_bh(dev);
}
}
void netpoll_queue(struct sk_buff *skb)
@ -765,6 +781,7 @@ void netpoll_cleanup(struct netpoll *np)
if (atomic_dec_and_test(&npinfo->refcnt)) {
skb_queue_purge(&npinfo->arp_tx);
skb_queue_purge(&npinfo->txq);
cancel_rearming_delayed_work(&npinfo->tx_work);
flush_scheduled_work();
kfree(npinfo);