File: /usr/src/linux/include/linux/in6.h
1 /*
2 * Types and definitions for AF_INET6
3 * Linux INET6 implementation
4 *
5 * Authors:
6 * Pedro Roque <roque@di.fc.ul.pt>
7 *
8 * Sources:
9 * IPv6 Program Interfaces for BSD Systems
10 * <draft-ietf-ipngwg-bsd-api-05.txt>
11 *
12 * Advanced Sockets API for IPv6
13 * <draft-stevens-advanced-api-00.txt>
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
19 */
20
21 #ifndef _LINUX_IN6_H
22 #define _LINUX_IN6_H
23
24 #include <linux/types.h>
25
26 /*
27 * IPv6 address structure
28 */
29
30 struct in6_addr
31 {
32 union
33 {
34 __u8 u6_addr8[16];
35 __u16 u6_addr16[8];
36 __u32 u6_addr32[4];
37 } in6_u;
38 #define s6_addr in6_u.u6_addr8
39 #define s6_addr16 in6_u.u6_addr16
40 #define s6_addr32 in6_u.u6_addr32
41 };
42
43 struct sockaddr_in6 {
44 unsigned short int sin6_family; /* AF_INET6 */
45 __u16 sin6_port; /* Transport layer port # */
46 __u32 sin6_flowinfo; /* IPv6 flow information */
47 struct in6_addr sin6_addr; /* IPv6 address */
48 __u32 sin6_scope_id; /* scope id (new in RFC2553) */
49 };
50
51 struct ipv6_mreq {
52 /* IPv6 multicast address of group */
53 struct in6_addr ipv6mr_multiaddr;
54
55 /* local IPv6 address of interface */
56 int ipv6mr_ifindex;
57 };
58
59 struct in6_flowlabel_req
60 {
61 struct in6_addr flr_dst;
62 __u32 flr_label;
63 __u8 flr_action;
64 __u8 flr_share;
65 __u16 flr_flags;
66 __u16 flr_expires;
67 __u16 flr_linger;
68 __u32 __flr_pad;
69 /* Options in format of IPV6_PKTOPTIONS */
70 };
71
72 #define IPV6_FL_A_GET 0
73 #define IPV6_FL_A_PUT 1
74 #define IPV6_FL_A_RENEW 2
75
76 #define IPV6_FL_F_CREATE 1
77 #define IPV6_FL_F_EXCL 2
78
79 #define IPV6_FL_S_NONE 0
80 #define IPV6_FL_S_EXCL 1
81 #define IPV6_FL_S_PROCESS 2
82 #define IPV6_FL_S_USER 3
83 #define IPV6_FL_S_ANY 255
84
85
86 /*
87 * Bitmask constant declarations to help applications select out the
88 * flow label and priority fields.
89 *
90 * Note that this are in host byte order while the flowinfo field of
91 * sockaddr_in6 is in network byte order.
92 */
93
94 #define IPV6_FLOWINFO_FLOWLABEL 0x000fffff
95 #define IPV6_FLOWINFO_PRIORITY 0x0ff00000
96
97 /* These defintions are obsolete */
98 #define IPV6_PRIORITY_UNCHARACTERIZED 0x0000
99 #define IPV6_PRIORITY_FILLER 0x0100
100 #define IPV6_PRIORITY_UNATTENDED 0x0200
101 #define IPV6_PRIORITY_RESERVED1 0x0300
102 #define IPV6_PRIORITY_BULK 0x0400
103 #define IPV6_PRIORITY_RESERVED2 0x0500
104 #define IPV6_PRIORITY_INTERACTIVE 0x0600
105 #define IPV6_PRIORITY_CONTROL 0x0700
106 #define IPV6_PRIORITY_8 0x0800
107 #define IPV6_PRIORITY_9 0x0900
108 #define IPV6_PRIORITY_10 0x0a00
109 #define IPV6_PRIORITY_11 0x0b00
110 #define IPV6_PRIORITY_12 0x0c00
111 #define IPV6_PRIORITY_13 0x0d00
112 #define IPV6_PRIORITY_14 0x0e00
113 #define IPV6_PRIORITY_15 0x0f00
114
115 /*
116 * IPV6 extension headers
117 */
118 #define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */
119 #define IPPROTO_ROUTING 43 /* IPv6 routing header */
120 #define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */
121 #define IPPROTO_ICMPV6 58 /* ICMPv6 */
122 #define IPPROTO_NONE 59 /* IPv6 no next header */
123 #define IPPROTO_DSTOPTS 60 /* IPv6 destination options */
124
125 /*
126 * IPv6 TLV options.
127 */
128 #define IPV6_TLV_PAD0 0
129 #define IPV6_TLV_PADN 1
130 #define IPV6_TLV_ROUTERALERT 5
131 #define IPV6_TLV_JUMBO 194
132
133 /*
134 * IPV6 socket options
135 */
136
137 #define IPV6_ADDRFORM 1
138 #define IPV6_PKTINFO 2
139 #define IPV6_HOPOPTS 3
140 #define IPV6_DSTOPTS 4
141 #define IPV6_RTHDR 5
142 #define IPV6_PKTOPTIONS 6
143 #define IPV6_CHECKSUM 7
144 #define IPV6_HOPLIMIT 8
145 #define IPV6_NEXTHOP 9
146 #define IPV6_AUTHHDR 10
147 #define IPV6_FLOWINFO 11
148
149 #define IPV6_UNICAST_HOPS 16
150 #define IPV6_MULTICAST_IF 17
151 #define IPV6_MULTICAST_HOPS 18
152 #define IPV6_MULTICAST_LOOP 19
153 #define IPV6_ADD_MEMBERSHIP 20
154 #define IPV6_DROP_MEMBERSHIP 21
155 #define IPV6_ROUTER_ALERT 22
156 #define IPV6_MTU_DISCOVER 23
157 #define IPV6_MTU 24
158 #define IPV6_RECVERR 25
159
160 /* IPV6_MTU_DISCOVER values */
161 #define IPV6_PMTUDISC_DONT 0
162 #define IPV6_PMTUDISC_WANT 1
163 #define IPV6_PMTUDISC_DO 2
164
165 /* Flowlabel */
166 #define IPV6_FLOWLABEL_MGR 32
167 #define IPV6_FLOWINFO_SEND 33
168
169
170 #endif
171