include/net/atmclip.h

   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
  19 struct sk_buff;
  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         int             xoff;           /* 1 if send buffer is full */
  26         unsigned char   encap;          /* 0: NULL, 1: LLC/SNAP */
  27         unsigned long   last_use;       /* last send or receive operation */
  28         unsigned long   idle_timeout;   /* keep open idle for so many jiffies*/
  29         void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb);
  30                                         /* keep old push fn for chaining */
  31         void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb);
  32                                         /* keep old pop fn for chaining */
  33         struct clip_vcc *next;          /* next VCC */
  34 };
  35
  36
  37 struct atmarp_entry {
  38         struct clip_vcc *vccs;          /* active VCCs; NULL if resolution is
  39                                            pending */
  40         unsigned long   expires;        /* entry expiration time */
  41         struct neighbour *neigh;        /* neighbour back-pointer */
  42 };
  43
  44 #define PRIV(dev) ((struct clip_priv *) netdev_priv(dev))
  45
  46 struct clip_priv {
  47         int number;                     /* for convenience ... */
  48         spinlock_t xoff_lock;           /* ensures that pop is atomic (SMP) */
  49         struct net_device *next;        /* next CLIP interface */
  50 };
  51
  52 #endif