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gerrit-public.fairphone.software / kernel / msm / 9a840895147b12de5cdd633c600b38686840ee53 / . / include / net / fib_rules.h
blob: ca4b2e840078627befec9069f7bdc972778fe7b5 [file] [log] [blame]
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]1#ifndef __NET_FIB_RULES_H
2#define __NET_FIB_RULES_H
3
4#include <linux/types.h>
5#include <linux/netdevice.h>
6#include <linux/fib_rules.h>
7#include <net/flow.h>
Thomas Graf9d9e6a52007-03-25 23:20:05 -0700[diff] [blame]8#include <net/rtnetlink.h>
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]9
10struct fib_rule
11{
12 struct list_head list;
13 atomic_t refcnt;
14 int ifindex;
15 char ifname[IFNAMSIZ];
Thomas Grafb8964ed2006-11-09 15:22:18 -0800[diff] [blame]16 u32 mark;
17 u32 mark_mask;
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]18 u32 pref;
19 u32 flags;
20 u32 table;
21 u8 action;
Thomas Graf0947c9fe2007-03-26 17:14:15 -0700[diff] [blame]22 u32 target;
23 struct fib_rule * ctarget;
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]24 struct rcu_head rcu;
Denis V. Lunev51314a12008-01-20 16:47:09 -0800[diff] [blame]25 struct net * fr_net;
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]26};
27
28struct fib_lookup_arg
29{
30 void *lookup_ptr;
31 void *result;
32 struct fib_rule *rule;
33};
34
35struct fib_rules_ops
36{
37 int family;
38 struct list_head list;
39 int rule_size;
Thomas Grafe1701c62007-03-24 12:46:02 -0700[diff] [blame]40 int addr_size;
Thomas Graf0947c9fe2007-03-26 17:14:15 -0700[diff] [blame]41 int unresolved_rules;
42 int nr_goto_rules;
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]43
44 int (*action)(struct fib_rule *,
45 struct flowi *, int,
46 struct fib_lookup_arg *);
47 int (*match)(struct fib_rule *,
48 struct flowi *, int);
49 int (*configure)(struct fib_rule *,
50 struct sk_buff *,
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]51 struct fib_rule_hdr *,
52 struct nlattr **);
53 int (*compare)(struct fib_rule *,
54 struct fib_rule_hdr *,
55 struct nlattr **);
56 int (*fill)(struct fib_rule *, struct sk_buff *,
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]57 struct fib_rule_hdr *);
Denis V. Lunev868d13a2008-01-10 03:18:25 -0800[diff] [blame]58 u32 (*default_pref)(struct fib_rules_ops *ops);
Thomas Graf339bf982006-11-10 14:10:15 -0800[diff] [blame]59 size_t (*nlmsg_payload)(struct fib_rule *);
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]60
Thomas Graf73417f62007-03-27 13:56:52 -0700[diff] [blame]61 /* Called after modifications to the rules set, must flush
62 * the route cache if one exists. */
Denis V. Lunevae299fc2008-07-05 19:01:28 -0700[diff] [blame]63 void (*flush_cache)(struct fib_rules_ops *ops);
Thomas Graf73417f62007-03-27 13:56:52 -0700[diff] [blame]64
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]65 int nlgroup;
Patrick McHardyef7c79e2007-06-05 12:38:30 -0700[diff] [blame]66 const struct nla_policy *policy;
Denis V. Lunev76c72d42007-09-16 15:44:27 -0700[diff] [blame]67 struct list_head rules_list;
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]68 struct module *owner;
Denis V. Lunev03592382008-01-20 16:46:01 -0800[diff] [blame]69 struct net *fro_net;
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]70};
71
Thomas Graf1f6c9552006-11-09 15:22:48 -0800[diff] [blame]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 }, \
Thomas Graf0947c9fe2007-03-26 17:14:15 -0700[diff] [blame]77 [FRA_TABLE] = { .type = NLA_U32 }, \
78 [FRA_GOTO] = { .type = NLA_U32 }
Thomas Graf1f6c9552006-11-09 15:22:48 -0800[diff] [blame]79
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]80static inline void fib_rule_get(struct fib_rule *rule)
81{
82 atomic_inc(&rule->refcnt);
83}
84
85static inline void fib_rule_put_rcu(struct rcu_head *head)
86{
87 struct fib_rule *rule = container_of(head, struct fib_rule, rcu);
Denis V. Lunev3661a912008-04-16 02:01:56 -0700[diff] [blame]88 release_net(rule->fr_net);
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]89 kfree(rule);
90}
91
92static inline void fib_rule_put(struct fib_rule *rule)
93{
94 if (atomic_dec_and_test(&rule->refcnt))
95 call_rcu(&rule->rcu, fib_rule_put_rcu);
96}
97
Patrick McHardy9e762a42006-08-10 23:09:48 -0700[diff] [blame]98static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla)
99{
100 if (nla[FRA_TABLE])
101 return nla_get_u32(nla[FRA_TABLE]);
102 return frh->table;
103}
104
Denis V. Lunev9e3a5482008-01-20 16:46:41 -0800[diff] [blame]105extern int fib_rules_register(struct fib_rules_ops *);
106extern void fib_rules_unregister(struct fib_rules_ops *);
Daniel Lezcano9eb87f32007-12-07 00:42:52 -0800[diff] [blame]107extern void fib_rules_cleanup_ops(struct fib_rules_ops *);
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]108
109extern int fib_rules_lookup(struct fib_rules_ops *,
110 struct flowi *, int flags,
111 struct fib_lookup_arg *);
Denis V. Lunev2994c632007-11-10 22:12:03 -0800[diff] [blame]112extern int fib_default_rule_add(struct fib_rules_ops *,
113 u32 pref, u32 table,
114 u32 flags);
Thomas Graf14c0b972006-08-04 03:38:38 -0700[diff] [blame]115#endif