Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * | |
3 | * Generic internet FLOW. | |
4 | * | |
5 | */ | |
6 | ||
7 | #ifndef _NET_FLOW_H | |
8 | #define _NET_FLOW_H | |
9 | ||
10 | #include <linux/in6.h> | |
11 | #include <asm/atomic.h> | |
12 | ||
13 | struct flowi { | |
14 | int oif; | |
15 | int iif; | |
47dcf0cb | 16 | __u32 mark; |
1da177e4 LT |
17 | |
18 | union { | |
19 | struct { | |
f2c3fe24 AV |
20 | __be32 daddr; |
21 | __be32 saddr; | |
1da177e4 LT |
22 | __u8 tos; |
23 | __u8 scope; | |
24 | } ip4_u; | |
25 | ||
26 | struct { | |
27 | struct in6_addr daddr; | |
28 | struct in6_addr saddr; | |
90bcaf7b | 29 | __be32 flowlabel; |
1da177e4 LT |
30 | } ip6_u; |
31 | ||
32 | struct { | |
c4ea94ab SW |
33 | __le16 daddr; |
34 | __le16 saddr; | |
1da177e4 LT |
35 | __u8 scope; |
36 | } dn_u; | |
37 | } nl_u; | |
38 | #define fld_dst nl_u.dn_u.daddr | |
39 | #define fld_src nl_u.dn_u.saddr | |
1da177e4 LT |
40 | #define fld_scope nl_u.dn_u.scope |
41 | #define fl6_dst nl_u.ip6_u.daddr | |
42 | #define fl6_src nl_u.ip6_u.saddr | |
43 | #define fl6_flowlabel nl_u.ip6_u.flowlabel | |
44 | #define fl4_dst nl_u.ip4_u.daddr | |
45 | #define fl4_src nl_u.ip4_u.saddr | |
1da177e4 LT |
46 | #define fl4_tos nl_u.ip4_u.tos |
47 | #define fl4_scope nl_u.ip4_u.scope | |
48 | ||
49 | __u8 proto; | |
a210d01a JA |
50 | __u8 flags; |
51 | #define FLOWI_FLAG_ANYSRC 0x01 | |
1da177e4 LT |
52 | union { |
53 | struct { | |
cc939d37 AV |
54 | __be16 sport; |
55 | __be16 dport; | |
1da177e4 LT |
56 | } ports; |
57 | ||
58 | struct { | |
59 | __u8 type; | |
60 | __u8 code; | |
61 | } icmpt; | |
62 | ||
63 | struct { | |
c4ea94ab SW |
64 | __le16 sport; |
65 | __le16 dport; | |
1da177e4 LT |
66 | } dnports; |
67 | ||
4324a174 | 68 | __be32 spi; |
cc9ff19d | 69 | __be32 gre_key; |
2b741653 | 70 | |
2b741653 MN |
71 | struct { |
72 | __u8 type; | |
73 | } mht; | |
1da177e4 LT |
74 | } uli_u; |
75 | #define fl_ip_sport uli_u.ports.sport | |
76 | #define fl_ip_dport uli_u.ports.dport | |
77 | #define fl_icmp_type uli_u.icmpt.type | |
78 | #define fl_icmp_code uli_u.icmpt.code | |
79 | #define fl_ipsec_spi uli_u.spi | |
2b741653 | 80 | #define fl_mh_type uli_u.mht.type |
cc9ff19d | 81 | #define fl_gre_key uli_u.gre_key |
b6340fcd | 82 | __u32 secid; /* used by xfrm; see secid.txt */ |
1da177e4 LT |
83 | } __attribute__((__aligned__(BITS_PER_LONG/8))); |
84 | ||
85 | #define FLOW_DIR_IN 0 | |
86 | #define FLOW_DIR_OUT 1 | |
87 | #define FLOW_DIR_FWD 2 | |
88 | ||
52479b62 | 89 | struct net; |
df71837d | 90 | struct sock; |
fe1a5f03 TT |
91 | struct flow_cache_ops; |
92 | ||
93 | struct flow_cache_object { | |
94 | const struct flow_cache_ops *ops; | |
95 | }; | |
96 | ||
97 | struct flow_cache_ops { | |
98 | struct flow_cache_object *(*get)(struct flow_cache_object *); | |
99 | int (*check)(struct flow_cache_object *); | |
100 | void (*delete)(struct flow_cache_object *); | |
101 | }; | |
102 | ||
103 | typedef struct flow_cache_object *(*flow_resolve_t)( | |
104 | struct net *net, struct flowi *key, u16 family, | |
105 | u8 dir, struct flow_cache_object *oldobj, void *ctx); | |
106 | ||
107 | extern struct flow_cache_object *flow_cache_lookup( | |
108 | struct net *net, struct flowi *key, u16 family, | |
109 | u8 dir, flow_resolve_t resolver, void *ctx); | |
1da177e4 | 110 | |
1da177e4 LT |
111 | extern void flow_cache_flush(void); |
112 | extern atomic_t flow_cache_genid; | |
113 | ||
157bfc25 MN |
114 | static inline int flow_cache_uli_match(struct flowi *fl1, struct flowi *fl2) |
115 | { | |
116 | return (fl1->proto == fl2->proto && | |
117 | !memcmp(&fl1->uli_u, &fl2->uli_u, sizeof(fl1->uli_u))); | |
118 | } | |
119 | ||
1da177e4 | 120 | #endif |