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| /*!\file netinet/ipv6.h |
| * Linux IPv6 definitions. |
| */ |
| |
| /* |
| * Linux INET6 implementation |
| * |
| * Authors: |
| * Pedro Roque <roque@di.fc.ul.pt> |
| * |
| * $Id: ipv6.h,v 1.6 1997/04/01 02:22:58 davem Exp $ |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * NB! Don't ue this file. Use <netinet/in.h> instread. |
| */ |
| |
| #ifndef _NET_IPV6_H |
| #define _NET_IPV6_H |
| |
| #ifndef __NETINET_IN_H |
| #include <netinet/in.h> /* in6_addr */ |
| #endif |
| |
| /* |
| * Advanced API |
| * source interface/address selection, source routing, etc... |
| * *under construction* |
| */ |
| |
| #include <sys/packon.h> |
| |
| /* |
| * IPv6 fixed header |
| */ |
| struct ipv6hdr { |
| unsigned char ipv6_priority:4; |
| unsigned char ipv6_version:4; |
| unsigned char ipv6_flow_lbl[3]; |
| unsigned short ipv6_len; |
| unsigned char ipv6_nextheader; |
| unsigned char ipv6_hoplimit; |
| struct in6_addr ipv6_src; |
| struct in6_addr ipv6_dst; |
| }; |
| |
| |
| |
| /* |
| * The length of this struct cannot be greater than the length of |
| * the proto_priv field in a sk_buff which is currently |
| * defined to be 16 bytes. |
| * Pointers take upto 8 bytes (sizeof(void *) is 8 on the alpha). |
| */ |
| struct ipv6_options { |
| /* length of extension headers */ |
| unsigned short opt_flen; /* after fragment hdr */ |
| unsigned short opt_nflen; /* before fragment hdr */ |
| /* |
| * protocol options |
| * usualy carried in IPv6 extension headers |
| */ |
| struct ipv6_rt_hdr *srcrt; /* Routing Header */ |
| }; |
| |
| struct in6_pktinfo { |
| struct in6_addr ipi6_addr; |
| int ipi6_ifindex; |
| }; |
| |
| |
| struct in6_ifreq { |
| struct in6_addr ifr6_addr; |
| unsigned long ifr6_prefixlen; |
| unsigned long ifr6_ifindex; |
| }; |
| |
| #define IPV6_SRCRT_STRICT 0x01 /* this hop must be a neighbor */ |
| #define IPV6_SRCRT_TYPE_0 0 /* IPv6 type 0 Routing Header */ |
| |
| /* |
| * routing header |
| */ |
| struct ipv6_rt_hdr { |
| unsigned char nexthdr; |
| unsigned char hdrlen; |
| unsigned char type; |
| unsigned char segments_left; |
| /* |
| * type specific data |
| * variable length field |
| */ |
| }; |
| |
| /* |
| * routing header type 0 (used in cmsghdr struct) |
| */ |
| struct ipv6_rt0_hdr { |
| struct ipv6_rt_hdr rt_hdr; |
| unsigned long bitmap; /* strict/loose bit map */ |
| #ifndef __WATCOMC__ |
| struct in6_addr addr[0]; |
| #endif |
| #define rt0_type rt_hdr.type; |
| }; |
| |
| /* |
| * NextHeader field of IPv6 header |
| */ |
| |
| #define NEXTHDR_HOP 0 /* Hop-by-hop option header. */ |
| #define NEXTHDR_TCP 6 /* TCP segment. */ |
| #define NEXTHDR_UDP 17 /* UDP message. */ |
| #define NEXTHDR_IPV6 41 /* IPv6 in IPv6 */ |
| #define NEXTHDR_ROUTING 43 /* Routing header. */ |
| #define NEXTHDR_FRAGMENT 44 /* Fragmentation/reassembly header. */ |
| #define NEXTHDR_ESP 50 /* Encapsulating security payload. */ |
| #define NEXTHDR_AUTH 51 /* Authentication header. */ |
| #define NEXTHDR_ICMP 58 /* ICMP for IPv6. */ |
| #define NEXTHDR_NONE 59 /* No next header */ |
| #define NEXTHDR_DEST 60 /* Destination options header. */ |
| |
| #define NEXTHDR_MAX 255 |
| |
| |
| #define IPV6_DEFAULT_HOPLIMIT 64 |
| #define IPV6_DEFAULT_MCASTHOPS 1 |
| |
| /* |
| * Addr type |
| * |
| * type - unicast | multicast | anycast |
| * scope - local | site | global |
| * v4 - compat |
| * v4mapped |
| * any |
| * loopback |
| */ |
| |
| #define IPV6_ADDR_ANY 0x0000U |
| |
| #define IPV6_ADDR_UNICAST 0x0001U |
| #define IPV6_ADDR_MULTICAST 0x0002U |
| #define IPV6_ADDR_ANYCAST 0x0004U |
| |
| #define IPV6_ADDR_LOOPBACK 0x0010U |
| #define IPV6_ADDR_LINKLOCAL 0x0020U |
| #define IPV6_ADDR_SITELOCAL 0x0040U |
| |
| #define IPV6_ADDR_COMPATv4 0x0080U |
| |
| #define IPV6_ADDR_SCOPE_MASK 0x00f0U |
| |
| #define IPV6_ADDR_MAPPED 0x1000U |
| #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ |
| |
| /* |
| * fragmentation header |
| */ |
| |
| struct ipv6_fraghdr { |
| unsigned char nexthdr; |
| unsigned char reserved; |
| unsigned short frag_off; |
| unsigned long identification; |
| }; |
| #define fraghdr ipv6_fraghdr |
| |
| #include <sys/packoff.h> |
| |
| #endif |
| |