| Thomas Graf | 14c0b97 | 2006-08-04 03:38:38 -0700 | [diff] [blame] | 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]; |
| Thomas Graf | b8964ed | 2006-11-09 15:22:18 -0800 | [diff] [blame] | 16 | u32 mark; |
| 17 | u32 mark_mask; |
| Thomas Graf | 14c0b97 | 2006-08-04 03:38:38 -0700 | [diff] [blame] | 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); |
| Thomas Graf | 339bf98 | 2006-11-10 14:10:15 -0800 | [diff] [blame] | 55 | size_t (*nlmsg_payload)(struct fib_rule *); |
| Thomas Graf | 14c0b97 | 2006-08-04 03:38:38 -0700 | [diff] [blame] | 56 | |
| 57 | int nlgroup; |
| 58 | struct nla_policy *policy; |
| 59 | struct list_head *rules_list; |
| 60 | struct module *owner; |
| 61 | }; |
| 62 | |
| Thomas Graf | 1f6c955 | 2006-11-09 15:22:48 -0800 | [diff] [blame] | 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 | |
| Thomas Graf | 14c0b97 | 2006-08-04 03:38:38 -0700 | [diff] [blame] | 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 | |
| Patrick McHardy | 9e762a4 | 2006-08-10 23:09:48 -0700 | [diff] [blame] | 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 | |
| Thomas Graf | 14c0b97 | 2006-08-04 03:38:38 -0700 | [diff] [blame] | 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 |