1#ifndef _NET_DST_OPS_H 2#define _NET_DST_OPS_H 3#include <linux/types.h> 4 5struct dst_entry; 6struct kmem_cachep; 7struct net_device; 8struct sk_buff; 9 10struct dst_ops { 11 unsigned short family; 12 __be16 protocol; 13 unsigned gc_thresh; 14 15 int (*gc)(struct dst_ops *ops); 16 struct dst_entry * (*check)(struct dst_entry *, __u32 cookie); 17 void (*destroy)(struct dst_entry *); 18 void (*ifdown)(struct dst_entry *, 19 struct net_device *dev, int how); 20 struct dst_entry * (*negative_advice)(struct dst_entry *); 21 void (*link_failure)(struct sk_buff *); 22 void (*update_pmtu)(struct dst_entry *dst, u32 mtu); 23 int (*local_out)(struct sk_buff *skb); 24 25 atomic_t entries; 26 struct kmem_cache *kmem_cachep; 27}; 28#endif 29