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git.proxmox.com Git - mirror_ubuntu-artful-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>
8 #include <linux/refcount.h>
10 #include <net/rtnetlink.h>
12 struct fib_kuid_range
{
18 struct list_head list
;
27 /* 2 bytes hole, try to use */
30 struct fib_rule __rcu
*ctarget
;
36 int suppress_prefixlen
;
37 char iifname
[IFNAMSIZ
];
38 char oifname
[IFNAMSIZ
];
39 struct fib_kuid_range uid_range
;
43 struct fib_lookup_arg
{
46 struct fib_rule
*rule
;
49 #define FIB_LOOKUP_NOREF 1
50 #define FIB_LOOKUP_IGNORE_LINKSTATE 2
53 struct fib_rules_ops
{
55 struct list_head list
;
61 int (*action
)(struct fib_rule
*,
63 struct fib_lookup_arg
*);
64 bool (*suppress
)(struct fib_rule
*,
65 struct fib_lookup_arg
*);
66 int (*match
)(struct fib_rule
*,
68 int (*configure
)(struct fib_rule
*,
70 struct fib_rule_hdr
*,
72 int (*delete)(struct fib_rule
*);
73 int (*compare
)(struct fib_rule
*,
74 struct fib_rule_hdr
*,
76 int (*fill
)(struct fib_rule
*, struct sk_buff
*,
77 struct fib_rule_hdr
*);
78 size_t (*nlmsg_payload
)(struct fib_rule
*);
80 /* Called after modifications to the rules set, must flush
81 * the route cache if one exists. */
82 void (*flush_cache
)(struct fib_rules_ops
*ops
);
85 const struct nla_policy
*policy
;
86 struct list_head rules_list
;
92 #define FRA_GENERIC_POLICY \
93 [FRA_IIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
94 [FRA_OIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
95 [FRA_PRIORITY] = { .type = NLA_U32 }, \
96 [FRA_FWMARK] = { .type = NLA_U32 }, \
97 [FRA_FWMASK] = { .type = NLA_U32 }, \
98 [FRA_TABLE] = { .type = NLA_U32 }, \
99 [FRA_SUPPRESS_PREFIXLEN] = { .type = NLA_U32 }, \
100 [FRA_SUPPRESS_IFGROUP] = { .type = NLA_U32 }, \
101 [FRA_GOTO] = { .type = NLA_U32 }, \
102 [FRA_L3MDEV] = { .type = NLA_U8 }, \
103 [FRA_UID_RANGE] = { .len = sizeof(struct fib_rule_uid_range) }
105 static inline void fib_rule_get(struct fib_rule
*rule
)
107 refcount_inc(&rule
->refcnt
);
110 static inline void fib_rule_put(struct fib_rule
*rule
)
112 if (refcount_dec_and_test(&rule
->refcnt
))
113 kfree_rcu(rule
, rcu
);
116 #ifdef CONFIG_NET_L3_MASTER_DEV
117 static inline u32
fib_rule_get_table(struct fib_rule
*rule
,
118 struct fib_lookup_arg
*arg
)
120 return rule
->l3mdev
? arg
->table
: rule
->table
;
123 static inline u32
fib_rule_get_table(struct fib_rule
*rule
,
124 struct fib_lookup_arg
*arg
)
130 static inline u32
frh_get_table(struct fib_rule_hdr
*frh
, struct nlattr
**nla
)
133 return nla_get_u32(nla
[FRA_TABLE
]);
137 struct fib_rules_ops
*fib_rules_register(const struct fib_rules_ops
*,
139 void fib_rules_unregister(struct fib_rules_ops
*);
141 int fib_rules_lookup(struct fib_rules_ops
*, struct flowi
*, int flags
,
142 struct fib_lookup_arg
*);
143 int fib_default_rule_add(struct fib_rules_ops
*, u32 pref
, u32 table
,
145 bool fib_rule_matchall(const struct fib_rule
*rule
);
147 int fib_nl_newrule(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
148 struct netlink_ext_ack
*extack
);
149 int fib_nl_delrule(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
150 struct netlink_ext_ack
*extack
);