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/* 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

const unsigned char llc_oui[] = {

        0xaa,   /* DSAP: non-ISO */

        0xaa,   /* SSAP: non-ISO */

        0x03,   /* Ctrl: Unnumbered Information Command PDU */

        0x00,   /* OUI: EtherType */

        0x00,

        0x00 };

/*

 * 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 beware

 * of potential deadlocks.

 *

 * This function should live in skbuff.c or skbuff.h.

 */

void skb_migrate(struct sk_buff_head *from,struct sk_buff_head *to)

{

        struct sk_buff *skb;

        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;

        spin_lock_irqsave(&from->lock,flags);

        spin_lock(&to->lock);

        prev = from->prev;

        from->next->prev = to->prev;

        prev->next = skb_to;

        to->prev->next = from->next;

        to->prev = from->prev;

        for (skb = from->next; skb != skb_to; skb = skb->next)

                skb->list = to;

        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(llc_oui);

EXPORT_SYMBOL(skb_migrate);