include/net/atmclip.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* net/atm/atmarp.h - RFC1577 ATM ARP */
   3
   4 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
   5
   6
   7 #ifndef _ATMCLIP_H
   8 #define _ATMCLIP_H
   9
  10 #include <linux/netdevice.h>
  11 #include <linux/atm.h>
  12 #include <linux/atmdev.h>
  13 #include <linux/atmarp.h>
  14 #include <linux/spinlock.h>
  15 #include <net/neighbour.h>
  16
  17
  18 #define CLIP_VCC(vcc) ((struct clip_vcc *) ((vcc)->user_back))
  19
  20 struct sk_buff;
  21
  22 struct 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
  38 struct atmarp_entry {
  39         struct clip_vcc *vccs;          /* active VCCs; NULL if resolution is
  40                                            pending */
  41         unsigned long   expires;        /* entry expiration time */
  42         struct neighbour *neigh;        /* neighbour back-pointer */
  43 };
  44
  45 #define PRIV(dev) ((struct clip_priv *) netdev_priv(dev))
  46
  47 struct clip_priv {
  48         int number;                     /* for convenience ... */
  49         spinlock_t xoff_lock;           /* ensures that pop is atomic (SMP) */
  50         struct net_device *next;        /* next CLIP interface */
  51 };
  52
  53 #endif