| /* $FreeBSD$ */ |
| /* $KAME: ip6.h,v 1.18 2001/03/29 05:34:30 itojun Exp $ */ |
| |
| /*- |
| * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the project nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| /*- |
| * Copyright (c) 1982, 1986, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)ip.h 8.1 (Berkeley) 6/10/93 |
| */ |
| |
| #ifndef _NETINET_IP6_H_ |
| #define _NETINET_IP6_H_ |
| |
| #include "types.h" |
| |
| /* samkumar: Copied from netinet/in6.h */ |
| struct in6_addr { |
| union { |
| uint8_t __u6_addr8[16]; |
| uint16_t __u6_addr16[8]; |
| uint32_t __u6_addr32[4]; |
| } __u6_addr; /* 128-bit IP6 address */ |
| } __attribute__((packed)); // added this to allow unaligned access |
| #define s6_addr __u6_addr.__u6_addr8 |
| |
| struct sockaddr_in6 { |
| uint8_t sin6_len; /* length of this struct */ |
| int sin6_family; /* AF_INET6 */ |
| uint16_t sin6_port; /* Transport layer port # */ |
| uint32_t sin6_flowinfo; /* IP6 flow information */ |
| struct in6_addr sin6_addr; /* IP6 address */ |
| uint32_t sin6_scope_id; /* scope zone index */ |
| }; |
| |
| /* |
| * Definition for internet protocol version 6. |
| * RFC 2460 |
| */ |
| struct ip6_hdr { |
| union { |
| struct ip6_hdrctl { |
| u_int32_t ip6_un1_flow; /* 20 bits of flow-ID */ |
| u_int16_t ip6_un1_plen; /* payload length */ |
| u_int8_t ip6_un1_nxt; /* next header */ |
| u_int8_t ip6_un1_hlim; /* hop limit */ |
| } ip6_un1; |
| u_int8_t ip6_un2_vfc; /* 4 bits version, top 4 bits class */ |
| } ip6_ctlun; |
| struct in6_addr ip6_src; /* source address */ |
| struct in6_addr ip6_dst; /* destination address */ |
| } __attribute__((packed)); |
| |
| #define ip6_vfc ip6_ctlun.ip6_un2_vfc |
| #define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow |
| #define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen |
| #define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt |
| #define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim |
| #define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim |
| |
| #define IPV6_VERSION 0x60 |
| #define IPV6_VERSION_MASK 0xf0 |
| |
| /* samkumar: Removed #if guard since ECN is enabled in TCPlp. */ |
| /* ECN bits proposed by Sally Floyd */ |
| #define IP6TOS_CE 0x01 /* congestion experienced */ |
| #define IP6TOS_ECT 0x02 /* ECN-capable transport */ |
| |
| // samkumar: Copied from in6.h |
| #define IN6_ARE_ADDR_EQUAL(a, b) \ |
| (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) |
| |
| /* Multicast */ |
| #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) |
| |
| /* |
| * Unspecified |
| */ |
| #define IN6_IS_ADDR_UNSPECIFIED(a) \ |
| ((a)->__u6_addr.__u6_addr32[0] == 0 && \ |
| (a)->__u6_addr.__u6_addr32[1] == 0 && \ |
| (a)->__u6_addr.__u6_addr32[2] == 0 && \ |
| (a)->__u6_addr.__u6_addr32[3] == 0) |
| |
| /* |
| * Loopback |
| */ |
| #define IN6_IS_ADDR_LOOPBACK(a) \ |
| ((a)->__u6_addr.__u6_addr32[0] == 0 && \ |
| (a)->__u6_addr.__u6_addr32[1] == 0 && \ |
| (a)->__u6_addr.__u6_addr32[2] == 0 && \ |
| (a)->__u6_addr.__u6_addr32[3] == ntohl(1)) |
| |
| /* |
| * Unicast Scope |
| * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). |
| */ |
| #define IN6_IS_ADDR_LINKLOCAL(a) \ |
| (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) |
| #define IN6_IS_ADDR_SITELOCAL(a) \ |
| (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) |
| |
| /* |
| * Mapped |
| */ |
| |
| #define IN6_IS_ADDR_V4MAPPED(a) \ |
| ((a)->__u6_addr.__u6_addr32[0] == 0 && \ |
| (a)->__u6_addr.__u6_addr32[1] == 0 && \ |
| (a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff)) |
| |
| #endif /* not _NETINET_IP6_H_ */ |