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; | |
16 | ||
17 | union { | |
18 | struct { | |
19 | __u32 daddr; | |
20 | __u32 saddr; | |
21 | __u32 fwmark; | |
22 | __u8 tos; | |
23 | __u8 scope; | |
24 | } ip4_u; | |
25 | ||
26 | struct { | |
27 | struct in6_addr daddr; | |
28 | struct in6_addr saddr; | |
29 | __u32 flowlabel; | |
30 | } ip6_u; | |
31 | ||
32 | struct { | |
33 | __u16 daddr; | |
34 | __u16 saddr; | |
35 | __u32 fwmark; | |
36 | __u8 scope; | |
37 | } dn_u; | |
38 | } nl_u; | |
39 | #define fld_dst nl_u.dn_u.daddr | |
40 | #define fld_src nl_u.dn_u.saddr | |
41 | #define fld_fwmark nl_u.dn_u.fwmark | |
42 | #define fld_scope nl_u.dn_u.scope | |
43 | #define fl6_dst nl_u.ip6_u.daddr | |
44 | #define fl6_src nl_u.ip6_u.saddr | |
45 | #define fl6_flowlabel nl_u.ip6_u.flowlabel | |
46 | #define fl4_dst nl_u.ip4_u.daddr | |
47 | #define fl4_src nl_u.ip4_u.saddr | |
48 | #define fl4_fwmark nl_u.ip4_u.fwmark | |
49 | #define fl4_tos nl_u.ip4_u.tos | |
50 | #define fl4_scope nl_u.ip4_u.scope | |
51 | ||
52 | __u8 proto; | |
53 | __u8 flags; | |
54 | #define FLOWI_FLAG_MULTIPATHOLDROUTE 0x01 | |
55 | union { | |
56 | struct { | |
57 | __u16 sport; | |
58 | __u16 dport; | |
59 | } ports; | |
60 | ||
61 | struct { | |
62 | __u8 type; | |
63 | __u8 code; | |
64 | } icmpt; | |
65 | ||
66 | struct { | |
67 | __u16 sport; | |
68 | __u16 dport; | |
69 | __u8 objnum; | |
70 | __u8 objnamel; /* Not 16 bits since max val is 16 */ | |
71 | __u8 objname[16]; /* Not zero terminated */ | |
72 | } dnports; | |
73 | ||
74 | __u32 spi; | |
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 | |
81 | } __attribute__((__aligned__(BITS_PER_LONG/8))); | |
82 | ||
83 | #define FLOW_DIR_IN 0 | |
84 | #define FLOW_DIR_OUT 1 | |
85 | #define FLOW_DIR_FWD 2 | |
86 | ||
87 | typedef void (*flow_resolve_t)(struct flowi *key, u16 family, u8 dir, | |
88 | void **objp, atomic_t **obj_refp); | |
89 | ||
90 | extern void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir, | |
91 | flow_resolve_t resolver); | |
92 | extern void flow_cache_flush(void); | |
93 | extern atomic_t flow_cache_genid; | |
94 | ||
95 | #endif |