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1275 |
phoenix |
/* net/atm/atmarp.h - RFC1577 ATM ARP */
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/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
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#ifndef _ATMCLIP_H
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#define _ATMCLIP_H
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/atm.h>
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#include <linux/atmdev.h>
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#include <linux/atmarp.h>
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#include <linux/spinlock.h>
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#include <net/neighbour.h>
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#define CLIP_VCC(vcc) ((struct clip_vcc *) ((vcc)->user_back))
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#define NEIGH2ENTRY(neigh) ((struct atmarp_entry *) (neigh)->primary_key)
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struct clip_vcc {
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struct atm_vcc *vcc; /* VCC descriptor */
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struct atmarp_entry *entry; /* ATMARP table entry, NULL if IP addr.
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isn't known yet */
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int xoff; /* 1 if send buffer is full */
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unsigned char encap; /* 0: NULL, 1: LLC/SNAP */
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unsigned long last_use; /* last send or receive operation */
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unsigned long idle_timeout; /* keep open idle for so many jiffies*/
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void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb);
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/* keep old push fn for chaining */
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void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb);
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/* keep old pop fn for chaining */
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struct clip_vcc *next; /* next VCC */
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};
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struct atmarp_entry {
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u32 ip; /* IP address */
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struct clip_vcc *vccs; /* active VCCs; NULL if resolution is
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pending */
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unsigned long expires; /* entry expiration time */
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struct neighbour *neigh; /* neighbour back-pointer */
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};
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#define PRIV(dev) ((struct clip_priv *) ((struct net_device *) (dev)+1))
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struct clip_priv {
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int number; /* for convenience ... */
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spinlock_t xoff_lock; /* ensures that pop is atomic (SMP) */
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struct net_device_stats stats;
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struct net_device *next; /* next CLIP interface */
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};
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#ifdef __KERNEL__
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struct atm_clip_ops {
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int (*clip_create)(int number);
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int (*clip_mkip)(struct atm_vcc *vcc,int timeout);
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int (*clip_setentry)(struct atm_vcc *vcc,u32 ip);
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int (*clip_encap)(struct atm_vcc *vcc,int mode);
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void (*clip_push)(struct atm_vcc *vcc,struct sk_buff *skb);
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int (*atm_init_atmarp)(struct atm_vcc *vcc);
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struct module *owner;
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};
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void atm_clip_ops_set(struct atm_clip_ops *);
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int try_atm_clip_ops(void);
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extern struct neigh_table *clip_tbl_hook;
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extern struct atm_clip_ops *atm_clip_ops;
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#endif
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#endif
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