/* net/atm/atmarp.h - RFC1577 ATM ARP */

/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */


#ifndef _ATMCLIP_H
#define _ATMCLIP_H

#include <linux/netdevice.h>
#include <linux/atm.h>
#include <linux/atmdev.h>
#include <linux/atmarp.h>
#include <linux/spinlock.h>
#include <net/neighbour.h>


#define CLIP_VCC(vcc) ((struct clip_vcc *) ((vcc)->user_back))

struct sk_buff;

struct clip_vcc {
struct atm_vcc *vcc; /* VCC descriptor */
struct atmarp_entry *entry; /* ATMARP table entry, NULL if IP addr.
isn't known yet */
int xoff; /* 1 if send buffer is full */
unsigned char encap; /* 0: NULL, 1: LLC/SNAP */
unsigned long last_use; /* last send or receive operation */
unsigned long idle_timeout; /* keep open idle for so many jiffies*/
void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb);
/* keep old push fn for chaining */
void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb);
/* keep old pop fn for chaining */
struct clip_vcc *next; /* next VCC */
};


struct atmarp_entry {
struct clip_vcc *vccs; /* active VCCs; NULL if resolution is
pending */
unsigned long expires; /* entry expiration time */
struct neighbour *neigh; /* neighbour back-pointer */
};

#define PRIV(dev) ((struct clip_priv *) netdev_priv(dev))

struct clip_priv {
int number; /* for convenience ... */
spinlock_t xoff_lock; /* ensures that pop is atomic (SMP) */
struct net_device *next; /* next CLIP interface */
};

#endif