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
);