From: Patrick McHardy <[EMAIL PROTECTED]> Date: Sat, 29 Sep 2007 17:21:23 +0200
> Unfortunately gcc doesn't perform tail call optimization when the > address of a parameter or local variable is passed to an extern > function before the tail call, which NF_HOOK does for the skb. To which Herbert later asked why we need the **pskb thing. The reason is that if we have to COW or resize the SKB it could result in a realloc of the sk_buff struct which is why we need the **pskb thing. But strangely I can't find any skbuff.h interfaces that require that any longer :-))) So this might be some artifact that we can in fact kill off. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
