#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; u32 target; struct fib_rule * ctarget; struct rcu_head rcu; struct net * fr_net; }; 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 unresolved_rules; int nr_goto_rules; 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 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 fib_rule_hdr *); u32 (*default_pref)(struct fib_rules_ops *ops); size_t (*nlmsg_payload)(struct fib_rule *); /* Called after modifications to the rules set, must flush * the route cache if one exists. */ void (*flush_cache)(struct fib_rules_ops *ops); int nlgroup; const struct nla_policy *policy; struct list_head rules_list; struct module *owner; struct net *fro_net; }; #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 }, \ [FRA_GOTO] = { .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); release_net(rule->fr_net); 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 void fib_rules_unregister(struct fib_rules_ops *); extern void fib_rules_cleanup_ops(struct fib_rules_ops *); extern int fib_rules_lookup(struct fib_rules_ops *, struct flowi *, int flags, struct fib_lookup_arg *); extern int fib_default_rule_add(struct fib_rules_ops *, u32 pref, u32 table, u32 flags); #endif