From c40a27f48ceee648e9cfdda040b69e7010d9f82c Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 30 Nov 2006 21:05:23 -0800 Subject: [ATM]: Kill ipcommon.[ch] All that remained was skb_migrate() and that was overkill for what the two call sites were trying to do. Signed-off-by: David S. Miller --- net/atm/ipcommon.c | 63 ------------------------------------------------------ 1 file changed, 63 deletions(-) delete mode 100644 net/atm/ipcommon.c (limited to 'net/atm/ipcommon.c') diff --git a/net/atm/ipcommon.c b/net/atm/ipcommon.c deleted file mode 100644 index 1d3de42fada0..000000000000 --- a/net/atm/ipcommon.c +++ /dev/null @@ -1,63 +0,0 @@ -/* net/atm/ipcommon.c - Common items for all ways of doing IP over ATM */ - -/* Written 1996-2000 by Werner Almesberger, EPFL LRC/ICA */ - - -#include -#include -#include -#include -#include -#include -#include - -#include "common.h" -#include "ipcommon.h" - - -#if 0 -#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args) -#else -#define DPRINTK(format,args...) -#endif - - -/* - * skb_migrate appends the list at "from" to "to", emptying "from" in the - * process. skb_migrate is atomic with respect to all other skb operations on - * "from" and "to". Note that it locks both lists at the same time, so to deal - * with the lock ordering, the locks are taken in address order. - * - * This function should live in skbuff.c or skbuff.h. - */ - - -void skb_migrate(struct sk_buff_head *from, struct sk_buff_head *to) -{ - unsigned long flags; - struct sk_buff *skb_from = (struct sk_buff *) from; - struct sk_buff *skb_to = (struct sk_buff *) to; - struct sk_buff *prev; - - if ((unsigned long) from < (unsigned long) to) { - spin_lock_irqsave(&from->lock, flags); - spin_lock_nested(&to->lock, SINGLE_DEPTH_NESTING); - } else { - spin_lock_irqsave(&to->lock, flags); - spin_lock_nested(&from->lock, SINGLE_DEPTH_NESTING); - } - prev = from->prev; - from->next->prev = to->prev; - prev->next = skb_to; - to->prev->next = from->next; - to->prev = from->prev; - to->qlen += from->qlen; - spin_unlock(&to->lock); - from->prev = skb_from; - from->next = skb_from; - from->qlen = 0; - spin_unlock_irqrestore(&from->lock, flags); -} - - -EXPORT_SYMBOL(skb_migrate); -- cgit v1.2.3