atmclip.h

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/* 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