root/include/net/atmclip.h

INCLUDED FROM

/* 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))
#define NEIGH2ENTRY(neigh) ((struct atmarp_entry *) (neigh)->primary_key)

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 {
        __be32          ip;             /* IP address */
        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_stats stats;
        struct net_device *next;        /* next CLIP interface */
};


#ifdef __KERNEL__
extern struct neigh_table *clip_tbl_hook;
#endif

#endif