projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 8 | #include <net/netlink.h> | |
| 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; | |
| 22 | struct rcu_head rcu; | |
| 23 | }; | |
| 24 | ||
| 25 | struct fib_lookup_arg | |
| 26 | { | |
| 27 | void *lookup_ptr; | |
| 28 | void *result; | |
| 29 | struct fib_rule *rule; | |
| 30 | }; | |
| 31 | ||
| 32 | struct fib_rules_ops | |
| 33 | { | |
| 34 | int family; | |
| 35 | struct list_head list; | |
| 36 | int rule_size; | |
| 37 | ||
| 38 | int (*action)(struct fib_rule *, | |
| 39 | struct flowi *, int, | |
| 40 | struct fib_lookup_arg *); | |
| 41 | int (*match)(struct fib_rule *, | |
| 42 | struct flowi *, int); | |
| 43 | int (*configure)(struct fib_rule *, | |
| 44 | struct sk_buff *, | |
| 45 | struct nlmsghdr *, | |
| 46 | struct fib_rule_hdr *, | |
| 47 | struct nlattr **); | |
| 48 | int (*compare)(struct fib_rule *, | |
| 49 | struct fib_rule_hdr *, | |
| 50 | struct nlattr **); | |
| 51 | int (*fill)(struct fib_rule *, struct sk_buff *, | |
| 52 | struct nlmsghdr *, | |
| 53 | struct fib_rule_hdr *); | |
| 54 | u32 (*default_pref)(void); | |
| 339bf98f | 55 | size_t (*nlmsg_payload)(struct fib_rule *); |
| 14c0b97d TG |
56 | |
| 57 | int nlgroup; | |
| 58 | struct nla_policy *policy; | |
| 59 | struct list_head *rules_list; | |
| 60 | struct module *owner; | |
| 61 | }; | |
| 62 | ||
| 1f6c9557 TG |
63 | #define FRA_GENERIC_POLICY \ |
| 64 | [FRA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ | |
| 65 | [FRA_PRIORITY] = { .type = NLA_U32 }, \ | |
| 66 | [FRA_FWMARK] = { .type = NLA_U32 }, \ | |
| 67 | [FRA_FWMASK] = { .type = NLA_U32 }, \ | |
| 68 | [FRA_TABLE] = { .type = NLA_U32 } | |
| 69 | ||
| 14c0b97d TG |
70 | static inline void fib_rule_get(struct fib_rule *rule) |
| 71 | { | |
| 72 | atomic_inc(&rule->refcnt); | |
| 73 | } | |
| 74 | ||
| 75 | static inline void fib_rule_put_rcu(struct rcu_head *head) | |
| 76 | { | |
| 77 | struct fib_rule *rule = container_of(head, struct fib_rule, rcu); | |
| 78 | kfree(rule); | |
| 79 | } | |
| 80 | ||
| 81 | static inline void fib_rule_put(struct fib_rule *rule) | |
| 82 | { | |
| 83 | if (atomic_dec_and_test(&rule->refcnt)) | |
| 84 | call_rcu(&rule->rcu, fib_rule_put_rcu); | |
| 85 | } | |
| 86 | ||
| 9e762a4a PM |
87 | static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla) |
| 88 | { | |
| 89 | if (nla[FRA_TABLE]) | |
| 90 | return nla_get_u32(nla[FRA_TABLE]); | |
| 91 | return frh->table; | |
| 92 | } | |
| 93 | ||
| 14c0b97d TG |
94 | extern int fib_rules_register(struct fib_rules_ops *); |
| 95 | extern int fib_rules_unregister(struct fib_rules_ops *); | |
| 96 | ||
| 97 | extern int fib_rules_lookup(struct fib_rules_ops *, | |
| 98 | struct flowi *, int flags, | |
| 99 | struct fib_lookup_arg *); | |
| 100 | ||
| 101 | extern int fib_nl_newrule(struct sk_buff *, | |
| 102 | struct nlmsghdr *, void *); | |
| 103 | extern int fib_nl_delrule(struct sk_buff *, | |
| 104 | struct nlmsghdr *, void *); | |
| 105 | extern int fib_rules_dump(struct sk_buff *, | |
| 106 | struct netlink_callback *, int); | |
| 107 | #endif |