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> | |
5a0e3ad6 | 5 | #include <linux/slab.h> |
14c0b97d TG |
6 | #include <linux/netdevice.h> |
7 | #include <linux/fib_rules.h> | |
8 | #include <net/flow.h> | |
9d9e6a58 | 9 | #include <net/rtnetlink.h> |
14c0b97d | 10 | |
fd2c3ef7 | 11 | struct fib_rule { |
14c0b97d | 12 | struct list_head list; |
491deb24 | 13 | int iifindex; |
1b038a5e | 14 | int oifindex; |
b8964ed9 TG |
15 | u32 mark; |
16 | u32 mark_mask; | |
14c0b97d TG |
17 | u32 flags; |
18 | u32 table; | |
19 | u8 action; | |
96c63fa7 DA |
20 | u8 l3mdev; |
21 | /* 2 bytes hole, try to use */ | |
0947c9fe | 22 | u32 target; |
e7030878 | 23 | __be64 tun_id; |
7a2b03c5 | 24 | struct fib_rule __rcu *ctarget; |
fba3679d ED |
25 | struct net *fr_net; |
26 | ||
27 | atomic_t refcnt; | |
28 | u32 pref; | |
29 | int suppress_ifgroup; | |
30 | int suppress_prefixlen; | |
491deb24 | 31 | char iifname[IFNAMSIZ]; |
1b038a5e | 32 | char oifname[IFNAMSIZ]; |
14c0b97d TG |
33 | struct rcu_head rcu; |
34 | }; | |
35 | ||
fd2c3ef7 | 36 | struct fib_lookup_arg { |
14c0b97d TG |
37 | void *lookup_ptr; |
38 | void *result; | |
39 | struct fib_rule *rule; | |
96c63fa7 | 40 | u32 table; |
ebc0ffae | 41 | int flags; |
0eeb075f AG |
42 | #define FIB_LOOKUP_NOREF 1 |
43 | #define FIB_LOOKUP_IGNORE_LINKSTATE 2 | |
14c0b97d TG |
44 | }; |
45 | ||
fd2c3ef7 | 46 | struct fib_rules_ops { |
14c0b97d TG |
47 | int family; |
48 | struct list_head list; | |
49 | int rule_size; | |
e1701c68 | 50 | int addr_size; |
0947c9fe TG |
51 | int unresolved_rules; |
52 | int nr_goto_rules; | |
14c0b97d TG |
53 | |
54 | int (*action)(struct fib_rule *, | |
55 | struct flowi *, int, | |
56 | struct fib_lookup_arg *); | |
7764a45a ST |
57 | bool (*suppress)(struct fib_rule *, |
58 | struct fib_lookup_arg *); | |
14c0b97d TG |
59 | int (*match)(struct fib_rule *, |
60 | struct flowi *, int); | |
61 | int (*configure)(struct fib_rule *, | |
62 | struct sk_buff *, | |
14c0b97d TG |
63 | struct fib_rule_hdr *, |
64 | struct nlattr **); | |
0ddcf43d | 65 | int (*delete)(struct fib_rule *); |
14c0b97d TG |
66 | int (*compare)(struct fib_rule *, |
67 | struct fib_rule_hdr *, | |
68 | struct nlattr **); | |
69 | int (*fill)(struct fib_rule *, struct sk_buff *, | |
14c0b97d | 70 | struct fib_rule_hdr *); |
339bf98f | 71 | size_t (*nlmsg_payload)(struct fib_rule *); |
14c0b97d | 72 | |
73417f61 TG |
73 | /* Called after modifications to the rules set, must flush |
74 | * the route cache if one exists. */ | |
ae299fc0 | 75 | void (*flush_cache)(struct fib_rules_ops *ops); |
73417f61 | 76 | |
14c0b97d | 77 | int nlgroup; |
ef7c79ed | 78 | const struct nla_policy *policy; |
76c72d4f | 79 | struct list_head rules_list; |
14c0b97d | 80 | struct module *owner; |
03592383 | 81 | struct net *fro_net; |
e9c5158a | 82 | struct rcu_head rcu; |
14c0b97d TG |
83 | }; |
84 | ||
1f6c9557 | 85 | #define FRA_GENERIC_POLICY \ |
491deb24 | 86 | [FRA_IIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ |
1b038a5e | 87 | [FRA_OIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ |
1f6c9557 TG |
88 | [FRA_PRIORITY] = { .type = NLA_U32 }, \ |
89 | [FRA_FWMARK] = { .type = NLA_U32 }, \ | |
90 | [FRA_FWMASK] = { .type = NLA_U32 }, \ | |
0947c9fe | 91 | [FRA_TABLE] = { .type = NLA_U32 }, \ |
73f5698e | 92 | [FRA_SUPPRESS_PREFIXLEN] = { .type = NLA_U32 }, \ |
6ef94cfa | 93 | [FRA_SUPPRESS_IFGROUP] = { .type = NLA_U32 }, \ |
96c63fa7 DA |
94 | [FRA_GOTO] = { .type = NLA_U32 }, \ |
95 | [FRA_L3MDEV] = { .type = NLA_U8 } | |
1f6c9557 | 96 | |
14c0b97d TG |
97 | static inline void fib_rule_get(struct fib_rule *rule) |
98 | { | |
99 | atomic_inc(&rule->refcnt); | |
100 | } | |
101 | ||
14c0b97d TG |
102 | static inline void fib_rule_put(struct fib_rule *rule) |
103 | { | |
104 | if (atomic_dec_and_test(&rule->refcnt)) | |
efd7ef1c | 105 | kfree_rcu(rule, rcu); |
14c0b97d TG |
106 | } |
107 | ||
96c63fa7 DA |
108 | #ifdef CONFIG_NET_L3_MASTER_DEV |
109 | static inline u32 fib_rule_get_table(struct fib_rule *rule, | |
110 | struct fib_lookup_arg *arg) | |
111 | { | |
112 | return rule->l3mdev ? arg->table : rule->table; | |
113 | } | |
114 | #else | |
115 | static inline u32 fib_rule_get_table(struct fib_rule *rule, | |
116 | struct fib_lookup_arg *arg) | |
117 | { | |
118 | return rule->table; | |
119 | } | |
120 | #endif | |
121 | ||
9e762a4a PM |
122 | static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla) |
123 | { | |
124 | if (nla[FRA_TABLE]) | |
125 | return nla_get_u32(nla[FRA_TABLE]); | |
126 | return frh->table; | |
127 | } | |
128 | ||
8de6879f JP |
129 | struct fib_rules_ops *fib_rules_register(const struct fib_rules_ops *, |
130 | struct net *); | |
131 | void fib_rules_unregister(struct fib_rules_ops *); | |
14c0b97d | 132 | |
8de6879f JP |
133 | int fib_rules_lookup(struct fib_rules_ops *, struct flowi *, int flags, |
134 | struct fib_lookup_arg *); | |
135 | int fib_default_rule_add(struct fib_rules_ops *, u32 pref, u32 table, | |
136 | u32 flags); | |
96c63fa7 DA |
137 | |
138 | int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh); | |
139 | int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr *nlh); | |
14c0b97d | 140 | #endif |