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Commit | Line | Data |
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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 | |
4465b469 | 52 | #define FLOWI_FLAG_MATCH_ANY_IIF 0x02 |
1da177e4 LT |
53 | union { |
54 | struct { | |
cc939d37 AV |
55 | __be16 sport; |
56 | __be16 dport; | |
1da177e4 LT |
57 | } ports; |
58 | ||
59 | struct { | |
60 | __u8 type; | |
61 | __u8 code; | |
62 | } icmpt; | |
63 | ||
64 | struct { | |
c4ea94ab SW |
65 | __le16 sport; |
66 | __le16 dport; | |
1da177e4 LT |
67 | } dnports; |
68 | ||
4324a174 | 69 | __be32 spi; |
cc9ff19d | 70 | __be32 gre_key; |
2b741653 | 71 | |
2b741653 MN |
72 | struct { |
73 | __u8 type; | |
74 | } mht; | |
1da177e4 LT |
75 | } uli_u; |
76 | #define fl_ip_sport uli_u.ports.sport | |
77 | #define fl_ip_dport uli_u.ports.dport | |
78 | #define fl_icmp_type uli_u.icmpt.type | |
79 | #define fl_icmp_code uli_u.icmpt.code | |
80 | #define fl_ipsec_spi uli_u.spi | |
2b741653 | 81 | #define fl_mh_type uli_u.mht.type |
cc9ff19d | 82 | #define fl_gre_key uli_u.gre_key |
b6340fcd | 83 | __u32 secid; /* used by xfrm; see secid.txt */ |
1da177e4 LT |
84 | } __attribute__((__aligned__(BITS_PER_LONG/8))); |
85 | ||
86 | #define FLOW_DIR_IN 0 | |
87 | #define FLOW_DIR_OUT 1 | |
88 | #define FLOW_DIR_FWD 2 | |
89 | ||
52479b62 | 90 | struct net; |
df71837d | 91 | struct sock; |
fe1a5f03 TT |
92 | struct flow_cache_ops; |
93 | ||
94 | struct flow_cache_object { | |
95 | const struct flow_cache_ops *ops; | |
96 | }; | |
97 | ||
98 | struct flow_cache_ops { | |
99 | struct flow_cache_object *(*get)(struct flow_cache_object *); | |
100 | int (*check)(struct flow_cache_object *); | |
101 | void (*delete)(struct flow_cache_object *); | |
102 | }; | |
103 | ||
104 | typedef struct flow_cache_object *(*flow_resolve_t)( | |
105 | struct net *net, struct flowi *key, u16 family, | |
106 | u8 dir, struct flow_cache_object *oldobj, void *ctx); | |
107 | ||
108 | extern struct flow_cache_object *flow_cache_lookup( | |
109 | struct net *net, struct flowi *key, u16 family, | |
110 | u8 dir, flow_resolve_t resolver, void *ctx); | |
1da177e4 | 111 | |
1da177e4 LT |
112 | extern void flow_cache_flush(void); |
113 | extern atomic_t flow_cache_genid; | |
114 | ||
157bfc25 MN |
115 | static inline int flow_cache_uli_match(struct flowi *fl1, struct flowi *fl2) |
116 | { | |
117 | return (fl1->proto == fl2->proto && | |
118 | !memcmp(&fl1->uli_u, &fl2->uli_u, sizeof(fl1->uli_u))); | |
119 | } | |
120 | ||
1da177e4 | 121 | #endif |