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
;
21 struct fib_rule
* ctarget
;
22 char iifname
[IFNAMSIZ
];
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_IIFNAME] = { .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
*,
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