1/* net/atm/atmarp.h - RFC1577 ATM ARP */ 2 3/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ 4 5 6#ifndef _ATMCLIP_H 7#define _ATMCLIP_H 8 9#include <linux/netdevice.h> 10#include <linux/atm.h> 11#include <linux/atmdev.h> 12#include <linux/atmarp.h> 13#include <linux/spinlock.h> 14#include <net/neighbour.h> 15 16 17#define CLIP_VCC(vcc) ((struct clip_vcc *) ((vcc)->user_back)) 18#define NEIGH2ENTRY(neigh) ((struct atmarp_entry *) (neigh)->primary_key) 19 20struct sk_buff; 21 22struct clip_vcc { 23 struct atm_vcc *vcc; /* VCC descriptor */ 24 struct atmarp_entry *entry; /* ATMARP table entry, NULL if IP addr. 25 isn't known yet */ 26 int xoff; /* 1 if send buffer is full */ 27 unsigned char encap; /* 0: NULL, 1: LLC/SNAP */ 28 unsigned long last_use; /* last send or receive operation */ 29 unsigned long idle_timeout; /* keep open idle for so many jiffies*/ 30 void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb); 31 /* keep old push fn for chaining */ 32 void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb); 33 /* keep old pop fn for chaining */ 34 struct clip_vcc *next; /* next VCC */ 35}; 36 37 38struct atmarp_entry { 39 __be32 ip; /* IP address */ 40 struct clip_vcc *vccs; /* active VCCs; NULL if resolution is 41 pending */ 42 unsigned long expires; /* entry expiration time */ 43 struct neighbour *neigh; /* neighbour back-pointer */ 44}; 45 46 47#define PRIV(dev) ((struct clip_priv *) netdev_priv(dev)) 48 49 50struct clip_priv { 51 int number; /* for convenience ... */ 52 spinlock_t xoff_lock; /* ensures that pop is atomic (SMP) */ 53 struct net_device *next; /* next CLIP interface */ 54}; 55 56 57#ifdef __KERNEL__ 58extern struct neigh_table *clip_tbl_hook; 59#endif 60 61#endif 62