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gerrit-public.fairphone.software / kernel / msm-4.9 / 4324a174304d1d826582be5422a976e09d2b1e63 / . / include / net / flow.h
blob: ddf5f3ca1720154be67aca197f628f1e7a83fd08 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
13struct flowi {
14 int oif;
15 int iif;
16
17 union {
18 struct {
Al Virof2c3fe22006-09-26 21:26:42 -0700[diff] [blame]19 __be32 daddr;
20 __be32 saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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;
YOSHIFUJI Hideaki75bff8f2006-08-21 19:22:01 +0900[diff] [blame]29 __u32 fwmark;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]30 __u32 flowlabel;
31 } ip6_u;
32
33 struct {
Steven Whitehousec4ea94a2006-03-20 22:42:39 -0800[diff] [blame]34 __le16 daddr;
35 __le16 saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]36 __u32 fwmark;
37 __u8 scope;
38 } dn_u;
39 } nl_u;
40#define fld_dst nl_u.dn_u.daddr
41#define fld_src nl_u.dn_u.saddr
42#define fld_fwmark nl_u.dn_u.fwmark
43#define fld_scope nl_u.dn_u.scope
44#define fl6_dst nl_u.ip6_u.daddr
45#define fl6_src nl_u.ip6_u.saddr
YOSHIFUJI Hideaki75bff8f2006-08-21 19:22:01 +0900[diff] [blame]46#define fl6_fwmark nl_u.ip6_u.fwmark
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]47#define fl6_flowlabel nl_u.ip6_u.flowlabel
48#define fl4_dst nl_u.ip4_u.daddr
49#define fl4_src nl_u.ip4_u.saddr
50#define fl4_fwmark nl_u.ip4_u.fwmark
51#define fl4_tos nl_u.ip4_u.tos
52#define fl4_scope nl_u.ip4_u.scope
53
54 __u8 proto;
55 __u8 flags;
56#define FLOWI_FLAG_MULTIPATHOLDROUTE 0x01
57 union {
58 struct {
Al Virocc939d32006-09-27 18:33:22 -0700[diff] [blame]59 __be16 sport;
60 __be16 dport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]61 } ports;
62
63 struct {
64 __u8 type;
65 __u8 code;
66 } icmpt;
67
68 struct {
Steven Whitehousec4ea94a2006-03-20 22:42:39 -0800[diff] [blame]69 __le16 sport;
70 __le16 dport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]71 __u8 objnum;
72 __u8 objnamel; /* Not 16 bits since max val is 16 */
73 __u8 objname[16]; /* Not zero terminated */
74 } dnports;
75
Al Viro4324a172006-09-27 18:49:07 -0700[diff] [blame^]76 __be32 spi;
Masahide NAKAMURA2b741652006-08-23 20:34:26 -0700[diff] [blame]77
78#ifdef CONFIG_IPV6_MIP6
79 struct {
80 __u8 type;
81 } mht;
82#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]83 } uli_u;
84#define fl_ip_sport uli_u.ports.sport
85#define fl_ip_dport uli_u.ports.dport
86#define fl_icmp_type uli_u.icmpt.type
87#define fl_icmp_code uli_u.icmpt.code
88#define fl_ipsec_spi uli_u.spi
Masahide NAKAMURA2b741652006-08-23 20:34:26 -0700[diff] [blame]89#ifdef CONFIG_IPV6_MIP6
90#define fl_mh_type uli_u.mht.type
91#endif
Venkat Yekkiralab6340fc2006-07-24 23:28:37 -0700[diff] [blame]92 __u32 secid; /* used by xfrm; see secid.txt */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]93} __attribute__((__aligned__(BITS_PER_LONG/8)));
94
95#define FLOW_DIR_IN 0
96#define FLOW_DIR_OUT 1
97#define FLOW_DIR_FWD 2
98
Trent Jaegerdf718372005-12-13 23:12:27 -0800[diff] [blame]99struct sock;
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700[diff] [blame]100typedef void (*flow_resolve_t)(struct flowi *key, u16 family, u8 dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]101 void **objp, atomic_t **obj_refp);
102
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700[diff] [blame]103extern void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir,
Trent Jaegerdf718372005-12-13 23:12:27 -0800[diff] [blame]104 flow_resolve_t resolver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]105extern void flow_cache_flush(void);
106extern atomic_t flow_cache_genid;
107
108#endif