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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 | 9 | |
fd2c3ef7 | 10 | struct fib_rule { |
14c0b97d TG |
11 | struct list_head list; |
12 | atomic_t refcnt; | |
491deb24 | 13 | int iifindex; |
1b038a5e | 14 | int oifindex; |
b8964ed9 TG |
15 | u32 mark; |
16 | u32 mark_mask; | |
14c0b97d TG |
17 | u32 pref; |
18 | u32 flags; | |
19 | u32 table; | |
20 | u8 action; | |
0947c9fe TG |
21 | u32 target; |
22 | struct fib_rule * ctarget; | |
491deb24 | 23 | char iifname[IFNAMSIZ]; |
1b038a5e | 24 | char oifname[IFNAMSIZ]; |
14c0b97d | 25 | struct rcu_head rcu; |
51314a17 | 26 | struct net * fr_net; |
14c0b97d TG |
27 | }; |
28 | ||
fd2c3ef7 | 29 | struct fib_lookup_arg { |
14c0b97d TG |
30 | void *lookup_ptr; |
31 | void *result; | |
32 | struct fib_rule *rule; | |
33 | }; | |
34 | ||
fd2c3ef7 | 35 | struct fib_rules_ops { |
14c0b97d TG |
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 *, | |
14c0b97d TG |
50 | struct fib_rule_hdr *, |
51 | struct nlattr **); | |
52 | int (*compare)(struct fib_rule *, | |
53 | struct fib_rule_hdr *, | |
54 | struct nlattr **); | |
55 | int (*fill)(struct fib_rule *, struct sk_buff *, | |
14c0b97d | 56 | struct fib_rule_hdr *); |
868d13ac | 57 | u32 (*default_pref)(struct fib_rules_ops *ops); |
339bf98f | 58 | size_t (*nlmsg_payload)(struct fib_rule *); |
14c0b97d | 59 | |
73417f61 TG |
60 | /* Called after modifications to the rules set, must flush |
61 | * the route cache if one exists. */ | |
ae299fc0 | 62 | void (*flush_cache)(struct fib_rules_ops *ops); |
73417f61 | 63 | |
14c0b97d | 64 | int nlgroup; |
ef7c79ed | 65 | const struct nla_policy *policy; |
76c72d4f | 66 | struct list_head rules_list; |
14c0b97d | 67 | struct module *owner; |
03592383 | 68 | struct net *fro_net; |
e9c5158a | 69 | struct rcu_head rcu; |
14c0b97d TG |
70 | }; |
71 | ||
1f6c9557 | 72 | #define FRA_GENERIC_POLICY \ |
491deb24 | 73 | [FRA_IIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ |
1b038a5e | 74 | [FRA_OIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ |
1f6c9557 TG |
75 | [FRA_PRIORITY] = { .type = NLA_U32 }, \ |
76 | [FRA_FWMARK] = { .type = NLA_U32 }, \ | |
77 | [FRA_FWMASK] = { .type = NLA_U32 }, \ | |
0947c9fe TG |
78 | [FRA_TABLE] = { .type = NLA_U32 }, \ |
79 | [FRA_GOTO] = { .type = NLA_U32 } | |
1f6c9557 | 80 | |
14c0b97d TG |
81 | static inline void fib_rule_get(struct fib_rule *rule) |
82 | { | |
83 | atomic_inc(&rule->refcnt); | |
84 | } | |
85 | ||
86 | static inline void fib_rule_put_rcu(struct rcu_head *head) | |
87 | { | |
88 | struct fib_rule *rule = container_of(head, struct fib_rule, rcu); | |
3661a910 | 89 | release_net(rule->fr_net); |
14c0b97d TG |
90 | kfree(rule); |
91 | } | |
92 | ||
93 | static inline void fib_rule_put(struct fib_rule *rule) | |
94 | { | |
95 | if (atomic_dec_and_test(&rule->refcnt)) | |
96 | call_rcu(&rule->rcu, fib_rule_put_rcu); | |
97 | } | |
98 | ||
9e762a4a PM |
99 | static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla) |
100 | { | |
101 | if (nla[FRA_TABLE]) | |
102 | return nla_get_u32(nla[FRA_TABLE]); | |
103 | return frh->table; | |
104 | } | |
105 | ||
e9c5158a | 106 | extern struct fib_rules_ops *fib_rules_register(struct fib_rules_ops *, struct net *); |
9e3a5487 | 107 | extern void fib_rules_unregister(struct fib_rules_ops *); |
9eb87f3f | 108 | extern void fib_rules_cleanup_ops(struct fib_rules_ops *); |
14c0b97d TG |
109 | |
110 | extern int fib_rules_lookup(struct fib_rules_ops *, | |
111 | struct flowi *, int flags, | |
112 | struct fib_lookup_arg *); | |
2994c638 DL |
113 | extern int fib_default_rule_add(struct fib_rules_ops *, |
114 | u32 pref, u32 table, | |
115 | u32 flags); | |
14c0b97d | 116 | #endif |