3 #include <linux/types.h>
4 #include <linux/percpu_counter.h>
12 unsigned short family;
16 int (*gc)(struct dst_ops *ops);
17 struct dst_entry * (*check)(struct dst_entry *, __u32 cookie);
18 void (*destroy)(struct dst_entry *);
19 void (*ifdown)(struct dst_entry *,
20 struct net_device *dev, int how);
21 struct dst_entry * (*negative_advice)(struct dst_entry *);
22 void (*link_failure)(struct sk_buff *);
23 void (*update_pmtu)(struct dst_entry *dst, u32 mtu);
24 int (*local_out)(struct sk_buff *skb);
26 struct kmem_cache *kmem_cachep;
28 struct percpu_counter pcpuc_entries ____cacheline_aligned_in_smp;
31 static inline int dst_entries_get_fast(struct dst_ops *dst)
33 return percpu_counter_read_positive(&dst->pcpuc_entries);
36 static inline int dst_entries_get_slow(struct dst_ops *dst)
41 res = percpu_counter_sum_positive(&dst->pcpuc_entries);
46 static inline void dst_entries_add(struct dst_ops *dst, int val)
49 percpu_counter_add(&dst->pcpuc_entries, val);
53 static inline int dst_entries_init(struct dst_ops *dst)
55 return percpu_counter_init(&dst->pcpuc_entries, 0);
58 static inline void dst_entries_destroy(struct dst_ops *dst)
60 percpu_counter_destroy(&dst->pcpuc_entries);