]> bbs.cooldavid.org Git - net-next-2.6.git/blame - include/net/fib_rules.h
[NET] fib_rules: goto rule action
[net-next-2.6.git] / include / net / fib_rules.h
CommitLineData
14c0b97d
TG
1#ifndef __NET_FIB_RULES_H
2#define __NET_FIB_RULES_H
3
4#include <linux/types.h>
5#include <linux/netdevice.h>
6#include <linux/fib_rules.h>
7#include <net/flow.h>
9d9e6a58 8#include <net/rtnetlink.h>
14c0b97d
TG
9
10struct fib_rule
11{
12 struct list_head list;
13 atomic_t refcnt;
14 int ifindex;
15 char ifname[IFNAMSIZ];
b8964ed9
TG
16 u32 mark;
17 u32 mark_mask;
14c0b97d
TG
18 u32 pref;
19 u32 flags;
20 u32 table;
21 u8 action;
0947c9fe
TG
22 u32 target;
23 struct fib_rule * ctarget;
14c0b97d
TG
24 struct rcu_head rcu;
25};
26
27struct fib_lookup_arg
28{
29 void *lookup_ptr;
30 void *result;
31 struct fib_rule *rule;
32};
33
34struct fib_rules_ops
35{
36 int family;
37 struct list_head list;
38 int rule_size;
e1701c68 39 int addr_size;
0947c9fe
TG
40 int unresolved_rules;
41 int nr_goto_rules;
14c0b97d
TG
42
43 int (*action)(struct fib_rule *,
44 struct flowi *, int,
45 struct fib_lookup_arg *);
46 int (*match)(struct fib_rule *,
47 struct flowi *, int);
48 int (*configure)(struct fib_rule *,
49 struct sk_buff *,
50 struct nlmsghdr *,
51 struct fib_rule_hdr *,
52 struct nlattr **);
53 int (*compare)(struct fib_rule *,
54 struct fib_rule_hdr *,
55 struct nlattr **);
56 int (*fill)(struct fib_rule *, struct sk_buff *,
57 struct nlmsghdr *,
58 struct fib_rule_hdr *);
59 u32 (*default_pref)(void);
339bf98f 60 size_t (*nlmsg_payload)(struct fib_rule *);
14c0b97d
TG
61
62 int nlgroup;
63 struct nla_policy *policy;
64 struct list_head *rules_list;
65 struct module *owner;
66};
67
1f6c9557
TG
68#define FRA_GENERIC_POLICY \
69 [FRA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
70 [FRA_PRIORITY] = { .type = NLA_U32 }, \
71 [FRA_FWMARK] = { .type = NLA_U32 }, \
72 [FRA_FWMASK] = { .type = NLA_U32 }, \
0947c9fe
TG
73 [FRA_TABLE] = { .type = NLA_U32 }, \
74 [FRA_GOTO] = { .type = NLA_U32 }
1f6c9557 75
14c0b97d
TG
76static inline void fib_rule_get(struct fib_rule *rule)
77{
78 atomic_inc(&rule->refcnt);
79}
80
81static inline void fib_rule_put_rcu(struct rcu_head *head)
82{
83 struct fib_rule *rule = container_of(head, struct fib_rule, rcu);
84 kfree(rule);
85}
86
87static inline void fib_rule_put(struct fib_rule *rule)
88{
89 if (atomic_dec_and_test(&rule->refcnt))
90 call_rcu(&rule->rcu, fib_rule_put_rcu);
91}
92
9e762a4a
PM
93static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla)
94{
95 if (nla[FRA_TABLE])
96 return nla_get_u32(nla[FRA_TABLE]);
97 return frh->table;
98}
99
14c0b97d
TG
100extern int fib_rules_register(struct fib_rules_ops *);
101extern int fib_rules_unregister(struct fib_rules_ops *);
102
103extern int fib_rules_lookup(struct fib_rules_ops *,
104 struct flowi *, int flags,
105 struct fib_lookup_arg *);
14c0b97d 106#endif