3 #include <linux/types.h>
4 #include <linux/percpu_counter.h>
5 #include <linux/cache.h>
13 unsigned short family;
17 int (*gc)(struct dst_ops *ops);
18 struct dst_entry * (*check)(struct dst_entry *, __u32 cookie);
19 void (*destroy)(struct dst_entry *);
20 void (*ifdown)(struct dst_entry *,
21 struct net_device *dev, int how);
22 struct dst_entry * (*negative_advice)(struct dst_entry *);
23 void (*link_failure)(struct sk_buff *);
24 void (*update_pmtu)(struct dst_entry *dst, u32 mtu);
25 int (*local_out)(struct sk_buff *skb);
27 struct kmem_cache *kmem_cachep;
29 struct percpu_counter pcpuc_entries ____cacheline_aligned_in_smp;
32 static inline int dst_entries_get_fast(struct dst_ops *dst)
34 return percpu_counter_read_positive(&dst->pcpuc_entries);
37 static inline int dst_entries_get_slow(struct dst_ops *dst)
42 res = percpu_counter_sum_positive(&dst->pcpuc_entries);
47 static inline void dst_entries_add(struct dst_ops *dst, int val)
50 percpu_counter_add(&dst->pcpuc_entries, val);
54 static inline int dst_entries_init(struct dst_ops *dst)
56 return percpu_counter_init(&dst->pcpuc_entries, 0);
59 static inline void dst_entries_destroy(struct dst_ops *dst)
61 percpu_counter_destroy(&dst->pcpuc_entries);