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Linux/include/net/atmclip.h

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  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
 54 

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