| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 |