1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* net/atm/atmarp.h - RFC1577 ATM ARP */ 2 /* net/atm/atmarp.h - RFC1577 ATM ARP */
3 3
4 /* Written 1995-2000 by Werner Almesberger, EP 4 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
5 5
6 6
7 #ifndef _ATMCLIP_H 7 #ifndef _ATMCLIP_H
8 #define _ATMCLIP_H 8 #define _ATMCLIP_H
9 9
10 #include <linux/netdevice.h> 10 #include <linux/netdevice.h>
11 #include <linux/atm.h> 11 #include <linux/atm.h>
12 #include <linux/atmdev.h> 12 #include <linux/atmdev.h>
13 #include <linux/atmarp.h> 13 #include <linux/atmarp.h>
14 #include <linux/spinlock.h> 14 #include <linux/spinlock.h>
15 #include <net/neighbour.h> 15 #include <net/neighbour.h>
16 16
17 17
18 #define CLIP_VCC(vcc) ((struct clip_vcc *) ((v 18 #define CLIP_VCC(vcc) ((struct clip_vcc *) ((vcc)->user_back))
19 19
20 struct sk_buff; 20 struct sk_buff;
21 21
22 struct clip_vcc { 22 struct clip_vcc {
23 struct atm_vcc *vcc; /* VCC 23 struct atm_vcc *vcc; /* VCC descriptor */
24 struct atmarp_entry *entry; /* ATM 24 struct atmarp_entry *entry; /* ATMARP table entry, NULL if IP addr.
25 isn 25 isn't known yet */
26 int xoff; /* 1 i 26 int xoff; /* 1 if send buffer is full */
27 unsigned char encap; /* 0: 27 unsigned char encap; /* 0: NULL, 1: LLC/SNAP */
28 unsigned long last_use; /* las 28 unsigned long last_use; /* last send or receive operation */
29 unsigned long idle_timeout; /* kee 29 unsigned long idle_timeout; /* keep open idle for so many jiffies*/
30 void (*old_push)(struct atm_vcc *vcc,s 30 void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb);
31 /* kee 31 /* keep old push fn for chaining */
32 void (*old_pop)(struct atm_vcc *vcc,st 32 void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb);
33 /* kee 33 /* keep old pop fn for chaining */
34 struct clip_vcc *next; /* nex 34 struct clip_vcc *next; /* next VCC */
35 }; 35 };
36 36
37 37
38 struct atmarp_entry { 38 struct atmarp_entry {
39 struct clip_vcc *vccs; /* act 39 struct clip_vcc *vccs; /* active VCCs; NULL if resolution is
40 pen 40 pending */
41 unsigned long expires; /* ent 41 unsigned long expires; /* entry expiration time */
42 struct neighbour *neigh; /* nei 42 struct neighbour *neigh; /* neighbour back-pointer */
43 }; 43 };
44 44
45 #define PRIV(dev) ((struct clip_priv *) netdev 45 #define PRIV(dev) ((struct clip_priv *) netdev_priv(dev))
46 46
47 struct clip_priv { 47 struct clip_priv {
48 int number; /* for 48 int number; /* for convenience ... */
49 spinlock_t xoff_lock; /* ens 49 spinlock_t xoff_lock; /* ensures that pop is atomic (SMP) */
50 struct net_device *next; /* nex 50 struct net_device *next; /* next CLIP interface */
51 }; 51 };
52 52
53 #endif 53 #endif
54 54
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