1 #ifndef __NET_FIB_RULES_H
2 #define __NET_FIB_RULES_H
4 #include <linux/types.h>
5 #include <linux/netdevice.h>
6 #include <linux/fib_rules.h>
8 #include <net/rtnetlink.h>
12 struct list_head list;
15 char ifname[IFNAMSIZ];
23 struct fib_rule * ctarget;
31 struct fib_rule *rule;
37 struct list_head list;
43 int (*action)(struct fib_rule *,
45 struct fib_lookup_arg *);
46 int (*match)(struct fib_rule *,
48 int (*configure)(struct fib_rule *,
51 struct fib_rule_hdr *,
53 int (*compare)(struct fib_rule *,
54 struct fib_rule_hdr *,
56 int (*fill)(struct fib_rule *, struct sk_buff *,
58 struct fib_rule_hdr *);
59 u32 (*default_pref)(void);
60 size_t (*nlmsg_payload)(struct fib_rule *);
62 /* Called after modifications to the rules set, must flush
63 * the route cache if one exists. */
64 void (*flush_cache)(void);
67 const struct nla_policy *policy;
68 struct list_head rules_list;
72 #define FRA_GENERIC_POLICY \
73 [FRA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
74 [FRA_PRIORITY] = { .type = NLA_U32 }, \
75 [FRA_FWMARK] = { .type = NLA_U32 }, \
76 [FRA_FWMASK] = { .type = NLA_U32 }, \
77 [FRA_TABLE] = { .type = NLA_U32 }, \
78 [FRA_GOTO] = { .type = NLA_U32 }
80 static inline void fib_rule_get(struct fib_rule *rule)
82 atomic_inc(&rule->refcnt);
85 static inline void fib_rule_put_rcu(struct rcu_head *head)
87 struct fib_rule *rule = container_of(head, struct fib_rule, rcu);
91 static inline void fib_rule_put(struct fib_rule *rule)
93 if (atomic_dec_and_test(&rule->refcnt))
94 call_rcu(&rule->rcu, fib_rule_put_rcu);
97 static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla)
100 return nla_get_u32(nla[FRA_TABLE]);
104 extern int fib_rules_register(struct net *, struct fib_rules_ops *);
105 extern int fib_rules_unregister(struct net *, struct fib_rules_ops *);
106 extern void fib_rules_cleanup_ops(struct fib_rules_ops *);
108 extern int fib_rules_lookup(struct fib_rules_ops *,
109 struct flowi *, int flags,
110 struct fib_lookup_arg *);
111 extern int fib_default_rule_add(struct fib_rules_ops *,