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>
11 struct list_head list;
14 char ifname[IFNAMSIZ];
22 struct fib_rule * ctarget;
27 struct fib_lookup_arg {
30 struct fib_rule *rule;
33 struct fib_rules_ops {
35 struct list_head list;
41 int (*action)(struct fib_rule *,
43 struct fib_lookup_arg *);
44 int (*match)(struct fib_rule *,
46 int (*configure)(struct fib_rule *,
48 struct fib_rule_hdr *,
50 int (*compare)(struct fib_rule *,
51 struct fib_rule_hdr *,
53 int (*fill)(struct fib_rule *, struct sk_buff *,
54 struct fib_rule_hdr *);
55 u32 (*default_pref)(struct fib_rules_ops *ops);
56 size_t (*nlmsg_payload)(struct fib_rule *);
58 /* Called after modifications to the rules set, must flush
59 * the route cache if one exists. */
60 void (*flush_cache)(struct fib_rules_ops *ops);
63 const struct nla_policy *policy;
64 struct list_head rules_list;
69 #define FRA_GENERIC_POLICY \
70 [FRA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
71 [FRA_PRIORITY] = { .type = NLA_U32 }, \
72 [FRA_FWMARK] = { .type = NLA_U32 }, \
73 [FRA_FWMASK] = { .type = NLA_U32 }, \
74 [FRA_TABLE] = { .type = NLA_U32 }, \
75 [FRA_GOTO] = { .type = NLA_U32 }
77 static inline void fib_rule_get(struct fib_rule *rule)
79 atomic_inc(&rule->refcnt);
82 static inline void fib_rule_put_rcu(struct rcu_head *head)
84 struct fib_rule *rule = container_of(head, struct fib_rule, rcu);
85 release_net(rule->fr_net);
89 static inline void fib_rule_put(struct fib_rule *rule)
91 if (atomic_dec_and_test(&rule->refcnt))
92 call_rcu(&rule->rcu, fib_rule_put_rcu);
95 static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla)
98 return nla_get_u32(nla[FRA_TABLE]);
102 extern int fib_rules_register(struct fib_rules_ops *);
103 extern void fib_rules_unregister(struct fib_rules_ops *);
104 extern void fib_rules_cleanup_ops(struct fib_rules_ops *);
106 extern int fib_rules_lookup(struct fib_rules_ops *,
107 struct flowi *, int flags,
108 struct fib_lookup_arg *);
109 extern int fib_default_rule_add(struct fib_rules_ops *,