include/net/atmclip.h

   1 /* net/atm/atmarp.h - RFC1577 ATM ARP */
   2
   3 /* Written 1995-1998 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/skbuff.h>
  11 #include <linux/atm.h>
  12 #include <linux/atmdev.h>
  13 #include <linux/atmarp.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
  20
  21 struct clip_vcc {
  22         struct atm_vcc  *vcc;           /* VCC descriptor */
  23         struct atmarp_entry *entry;     /* ATMARP table entry, NULL if IP addr.
  24                                            isn't known yet */
  25         unsigned char   encap;          /* 0: NULL, 1: LLC/SNAP */
  26         unsigned long   last_use;       /* last send or receive operation */
  27         unsigned long   idle_timeout;   /* keep open idle for so many jiffies*/
  28         void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb);
  29                                         /* keep old push fn for detaching */
  30         struct clip_vcc *next;          /* next VCC */
  31 };
  32
  33
  34 struct atmarp_entry {
  35         u32             ip;             /* IP address */
  36         struct clip_vcc *vccs;          /* active VCCs; NULL if resolution is
  37                                            pending */
  38         unsigned long   expires;        /* entry expiration time */
  39         struct neighbour *neigh;        /* neighbour back-pointer */
  40 };
  41
  42
  43 #define PRIV(dev) ((struct clip_priv *) ((struct net_device *) (dev)+1))
  44
  45
  46 struct clip_priv {
  47         char name[8];                   /* interface name */
  48         int number;                     /* for convenience ... */
  49         struct net_device_stats stats;
  50         struct net_device *next;                /* next CLIP interface */
  51 };
  52
  53
  54 extern struct atm_vcc *atmarpd; /* ugly */
  55 extern struct neigh_table clip_tbl;
  56
  57 int clip_create(int number);
  58 int clip_mkip(struct atm_vcc *vcc,int timeout);
  59 int clip_setentry(struct atm_vcc *vcc,u32 ip);
  60 int clip_encap(struct atm_vcc *vcc,int mode);
  61 void atm_clip_init(void);
  62
  63 #endif