From: Stephen Hemminger <[EMAIL PROTECTED]>
Date: Mon, 23 Oct 2006 12:02:53 -0700
> + spin_lock_irqsave(&netpoll_txq.lock, flags);
> + for (skb = (struct sk_buff *)netpoll_txq.next;
> + skb != (struct sk_buff *)&netpoll_txq; skb = next) {
> + next = skb->next;
> + if (skb->dev == dev) {
> + skb_unlink(skb, &netpoll_txq);
> + kfree_skb(skb);
> + }
> }
> + spin_unlock_irqrestore(&netpoll_txq.lock, flags);
IRQ's are disabled, I think we can't call kfree_skb() in such a
context.
That's why zap_completion_queue() has all of these funny
skb->destructor checks and such, all of this stuff potentially runs in
IRQ context.
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