projects / linux.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; | |
| 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 { | |
| c4ea94ab SW |
33 | __le16 daddr; |
| 34 | __le16 saddr; | |
| 1da177e4 LT |
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 { | |
| c4ea94ab SW |
67 | __le16 sport; |
| 68 | __le16 dport; | |
| 1da177e4 LT |
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 | |
| b6340fcd | 81 | __u32 secid; /* used by xfrm; see secid.txt */ |
| 1da177e4 LT |
82 | } __attribute__((__aligned__(BITS_PER_LONG/8))); |
| 83 | ||
| 84 | #define FLOW_DIR_IN 0 | |
| 85 | #define FLOW_DIR_OUT 1 | |
| 86 | #define FLOW_DIR_FWD 2 | |
| 87 | ||
| df71837d | 88 | struct sock; |
| e0d1caa7 | 89 | typedef void (*flow_resolve_t)(struct flowi *key, u16 family, u8 dir, |
| 1da177e4 LT |
90 | void **objp, atomic_t **obj_refp); |
| 91 | ||
| e0d1caa7 | 92 | extern void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir, |
| df71837d | 93 | flow_resolve_t resolver); |
| 1da177e4 LT |
94 | extern void flow_cache_flush(void); |
| 95 | extern atomic_t flow_cache_genid; | |
| 96 | ||
| 97 | #endif |