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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/net/fib_rules.h
1 #ifndef __NET_FIB_RULES_H
2 #define __NET_FIB_RULES_H
4 #include <linux/types.h>
5 #include <linux/slab.h>
6 #include <linux/netdevice.h>
7 #include <linux/fib_rules.h>
9 #include <net/rtnetlink.h>
11 struct fib_kuid_range
{
17 struct list_head list
;
26 /* 2 bytes hole, try to use */
29 struct fib_rule __rcu
*ctarget
;
35 int suppress_prefixlen
;
36 char iifname
[IFNAMSIZ
];
37 char oifname
[IFNAMSIZ
];
38 struct fib_kuid_range uid_range
;
42 struct fib_lookup_arg
{
45 struct fib_rule
*rule
;
48 #define FIB_LOOKUP_NOREF 1
49 #define FIB_LOOKUP_IGNORE_LINKSTATE 2
52 struct fib_rules_ops
{
54 struct list_head list
;
60 int (*action
)(struct fib_rule
*,
62 struct fib_lookup_arg
*);
63 bool (*suppress
)(struct fib_rule
*,
64 struct fib_lookup_arg
*);
65 int (*match
)(struct fib_rule
*,
67 int (*configure
)(struct fib_rule
*,
69 struct fib_rule_hdr
*,
71 int (*delete)(struct fib_rule
*);
72 int (*compare
)(struct fib_rule
*,
73 struct fib_rule_hdr
*,
75 int (*fill
)(struct fib_rule
*, struct sk_buff
*,
76 struct fib_rule_hdr
*);
77 size_t (*nlmsg_payload
)(struct fib_rule
*);
79 /* Called after modifications to the rules set, must flush
80 * the route cache if one exists. */
81 void (*flush_cache
)(struct fib_rules_ops
*ops
);
84 const struct nla_policy
*policy
;
85 struct list_head rules_list
;
91 #define FRA_GENERIC_POLICY \
92 [FRA_IIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
93 [FRA_OIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
94 [FRA_PRIORITY] = { .type = NLA_U32 }, \
95 [FRA_FWMARK] = { .type = NLA_U32 }, \
96 [FRA_FWMASK] = { .type = NLA_U32 }, \
97 [FRA_TABLE] = { .type = NLA_U32 }, \
98 [FRA_SUPPRESS_PREFIXLEN] = { .type = NLA_U32 }, \
99 [FRA_SUPPRESS_IFGROUP] = { .type = NLA_U32 }, \
100 [FRA_GOTO] = { .type = NLA_U32 }, \
101 [FRA_L3MDEV] = { .type = NLA_U8 }, \
102 [FRA_UID_RANGE] = { .len = sizeof(struct fib_rule_uid_range) }
104 static inline void fib_rule_get(struct fib_rule
*rule
)
106 atomic_inc(&rule
->refcnt
);
109 static inline void fib_rule_put(struct fib_rule
*rule
)
111 if (atomic_dec_and_test(&rule
->refcnt
))
112 kfree_rcu(rule
, rcu
);
115 #ifdef CONFIG_NET_L3_MASTER_DEV
116 static inline u32
fib_rule_get_table(struct fib_rule
*rule
,
117 struct fib_lookup_arg
*arg
)
119 return rule
->l3mdev
? arg
->table
: rule
->table
;
122 static inline u32
fib_rule_get_table(struct fib_rule
*rule
,
123 struct fib_lookup_arg
*arg
)
129 static inline u32
frh_get_table(struct fib_rule_hdr
*frh
, struct nlattr
**nla
)
132 return nla_get_u32(nla
[FRA_TABLE
]);
136 struct fib_rules_ops
*fib_rules_register(const struct fib_rules_ops
*,
138 void fib_rules_unregister(struct fib_rules_ops
*);
140 int fib_rules_lookup(struct fib_rules_ops
*, struct flowi
*, int flags
,
141 struct fib_lookup_arg
*);
142 int fib_default_rule_add(struct fib_rules_ops
*, u32 pref
, u32 table
,
145 int fib_nl_newrule(struct sk_buff
*skb
, struct nlmsghdr
*nlh
);
146 int fib_nl_delrule(struct sk_buff
*skb
, struct nlmsghdr
*nlh
);