/* 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