projects / linux-block.git / blame
| 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; | |
| 50 | __u8 flags; | |
| 51 | #define FLOWI_FLAG_MULTIPATHOLDROUTE 0x01 | |
| 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; |
| 2b741653 MN |
69 | |
| 70 | #ifdef CONFIG_IPV6_MIP6 | |
| 71 | struct { | |
| 72 | __u8 type; | |
| 73 | } mht; | |
| 74 | #endif | |
| 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 MN |
81 | #ifdef CONFIG_IPV6_MIP6 |
| 82 | #define fl_mh_type uli_u.mht.type | |
| 83 | #endif | |
| b6340fcd | 84 | __u32 secid; /* used by xfrm; see secid.txt */ |
| 1da177e4 LT |
85 | } __attribute__((__aligned__(BITS_PER_LONG/8))); |
| 86 | ||
| 87 | #define FLOW_DIR_IN 0 | |
| 88 | #define FLOW_DIR_OUT 1 | |
| 89 | #define FLOW_DIR_FWD 2 | |
| 90 | ||
| df71837d | 91 | struct sock; |
| 134b0fc5 | 92 | typedef int (*flow_resolve_t)(struct flowi *key, u16 family, u8 dir, |
| 1da177e4 LT |
93 | void **objp, atomic_t **obj_refp); |
| 94 | ||
| e0d1caa7 | 95 | extern void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir, |
| df71837d | 96 | flow_resolve_t resolver); |
| 1da177e4 LT |
97 | extern void flow_cache_flush(void); |
| 98 | extern atomic_t flow_cache_genid; | |
| 99 | ||
| 100 | #endif |