| #ifndef __NET_FIB_RULES_H |
| #define __NET_FIB_RULES_H |
| |
| #include <linux/types.h> |
| #include <linux/netdevice.h> |
| #include <linux/fib_rules.h> |
| #include <net/flow.h> |
| #include <net/rtnetlink.h> |
| |
| struct fib_rule |
| { |
| struct list_head list; |
| atomic_t refcnt; |
| int ifindex; |
| char ifname[IFNAMSIZ]; |
| u32 mark; |
| u32 mark_mask; |
| u32 pref; |
| u32 flags; |
| u32 table; |
| u8 action; |
| struct rcu_head rcu; |
| }; |
| |
| struct fib_lookup_arg |
| { |
| void *lookup_ptr; |
| void *result; |
| struct fib_rule *rule; |
| }; |
| |
| struct fib_rules_ops |
| { |
| int family; |
| struct list_head list; |
| int rule_size; |
| int addr_size; |
| |
| int (*action)(struct fib_rule *, |
| struct flowi *, int, |
| struct fib_lookup_arg *); |
| int (*match)(struct fib_rule *, |
| struct flowi *, int); |
| int (*configure)(struct fib_rule *, |
| struct sk_buff *, |
| struct nlmsghdr *, |
| struct fib_rule_hdr *, |
| struct nlattr **); |
| int (*compare)(struct fib_rule *, |
| struct fib_rule_hdr *, |
| struct nlattr **); |
| int (*fill)(struct fib_rule *, struct sk_buff *, |
| struct nlmsghdr *, |
| struct fib_rule_hdr *); |
| u32 (*default_pref)(void); |
| size_t (*nlmsg_payload)(struct fib_rule *); |
| |
| int nlgroup; |
| struct nla_policy *policy; |
| struct list_head *rules_list; |
| struct module *owner; |
| }; |
| |
| #define FRA_GENERIC_POLICY \ |
| [FRA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ |
| [FRA_PRIORITY] = { .type = NLA_U32 }, \ |
| [FRA_FWMARK] = { .type = NLA_U32 }, \ |
| [FRA_FWMASK] = { .type = NLA_U32 }, \ |
| [FRA_TABLE] = { .type = NLA_U32 } |
| |
| static inline void fib_rule_get(struct fib_rule *rule) |
| { |
| atomic_inc(&rule->refcnt); |
| } |
| |
| static inline void fib_rule_put_rcu(struct rcu_head *head) |
| { |
| struct fib_rule *rule = container_of(head, struct fib_rule, rcu); |
| kfree(rule); |
| } |
| |
| static inline void fib_rule_put(struct fib_rule *rule) |
| { |
| if (atomic_dec_and_test(&rule->refcnt)) |
| call_rcu(&rule->rcu, fib_rule_put_rcu); |
| } |
| |
| static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla) |
| { |
| if (nla[FRA_TABLE]) |
| return nla_get_u32(nla[FRA_TABLE]); |
| return frh->table; |
| } |
| |
| extern int fib_rules_register(struct fib_rules_ops *); |
| extern int fib_rules_unregister(struct fib_rules_ops *); |
| |
| extern int fib_rules_lookup(struct fib_rules_ops *, |
| struct flowi *, int flags, |
| struct fib_lookup_arg *); |
| #endif |