/* SPDX-License-Identifier: GPL-2.0 */ /* net/atm/atmarp.h - RFC1577 ATM ARP */ /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ #ifndef _ATMCLIP_H #define _ATMCLIP_H #include <linux/netdevice.h> #include <linux/atm.h> #include <linux/atmdev.h> #include <linux/atmarp.h> #include <linux/spinlock.h> #include <net/neighbour.h> #define CLIP_VCC(vcc) ((struct clip_vcc *) ((vcc)->user_back)) struct sk_buff; struct clip_vcc { struct atm_vcc *vcc; /* VCC descriptor */ struct atmarp_entry *entry; /* ATMARP table entry, NULL if IP addr. isn't known yet */ int xoff; /* 1 if send buffer is full */ unsigned char encap; /* 0: NULL, 1: LLC/SNAP */ unsigned long last_use; /* last send or receive operation */ unsigned long idle_timeout; /* keep open idle for so many jiffies*/ void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb); /* keep old push fn for chaining */ void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb); /* keep old pop fn for chaining */ struct clip_vcc *next; /* next VCC */ }; struct atmarp_entry { struct clip_vcc *vccs; /* active VCCs; NULL if resolution is pending */ unsigned long expires; /* entry expiration time */ struct neighbour *neigh; /* neighbour back-pointer */ }; #define PRIV(dev) ((struct clip_priv *) netdev_priv(dev)) struct clip_priv { int number; /* for convenience ... */ spinlock_t xoff_lock; /* ensures that pop is atomic (SMP) */ struct net_device *next; /* next CLIP interface */ }; #endif