diff options
author | David Woodhouse <dwmw2@infradead.org> | 2007-01-18 10:34:51 +1100 |
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committer | David Woodhouse <dwmw2@infradead.org> | 2007-01-18 10:34:51 +1100 |
commit | 9cdf083f981b8d37b3212400a359368661385099 (patch) | |
tree | aa15a6a08ad87e650dea40fb59b3180bef0d345b /net/atm/ipcommon.c | |
parent | e499e01d234a31d59679b7b1e1cf628d917ba49a (diff) | |
parent | a8b3485287731978899ced11f24628c927890e78 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'net/atm/ipcommon.c')
-rw-r--r-- | net/atm/ipcommon.c | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/net/atm/ipcommon.c b/net/atm/ipcommon.c deleted file mode 100644 index 1d3de42fada..00000000000 --- 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 <linux/module.h> -#include <linux/string.h> -#include <linux/skbuff.h> -#include <linux/netdevice.h> -#include <linux/in.h> -#include <linux/atmdev.h> -#include <linux/atmclip.h> - -#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); |