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Commit | Line | Data |
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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 | |
10 | struct 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 | ||
27 | struct fib_lookup_arg | |
28 | { | |
29 | void *lookup_ptr; | |
30 | void *result; | |
31 | struct fib_rule *rule; | |
32 | }; | |
33 | ||
34 | struct 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 |
76 | static inline void fib_rule_get(struct fib_rule *rule) |
77 | { | |
78 | atomic_inc(&rule->refcnt); | |
79 | } | |
80 | ||
81 | static 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 | ||
87 | static 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 |
93 | static 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 |
100 | extern int fib_rules_register(struct fib_rules_ops *); |
101 | extern int fib_rules_unregister(struct fib_rules_ops *); | |
102 | ||
103 | extern int fib_rules_lookup(struct fib_rules_ops *, | |
104 | struct flowi *, int flags, | |
105 | struct fib_lookup_arg *); | |
14c0b97d | 106 | #endif |