1 /* 2 * Copyright 1992-2002 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 1988, 1991, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)rtsock.c 8.6 (Berkeley) 2/11/95 39 */ 40 41 #pragma ident "%Z%%M% %I% %E% SMI" 42 43 /* 44 * This file contains routines that processes routing socket requests. 45 */ 46 47 #include <sys/types.h> 48 #include <sys/stream.h> 49 #include <sys/stropts.h> 50 #include <sys/strlog.h> 51 #include <sys/dlpi.h> 52 #include <sys/ddi.h> 53 #include <sys/cmn_err.h> 54 #include <sys/debug.h> 55 56 #include <sys/systm.h> 57 #include <sys/param.h> 58 #include <sys/socket.h> 59 #define _SUN_TPI_VERSION 2 60 #include <sys/tihdr.h> 61 #include <net/if.h> 62 #include <net/route.h> 63 #include <netinet/in.h> 64 #include <net/if_dl.h> 65 #include <netinet/ip6.h> 66 67 #include <inet/common.h> 68 #include <inet/mi.h> 69 #include <inet/ip.h> 70 #include <inet/ip6.h> 71 #include <inet/ip_if.h> 72 #include <inet/ip_ire.h> 73 #include <inet/ip_rts.h> 74 #include <inet/ip_multi.h> 75 76 /* 77 * Fills the message with the given info. 78 */ 79 void 80 rts_fill_msg_v6(int type, int rtm_addrs, const in6_addr_t *dst, 81 const in6_addr_t *mask, const in6_addr_t *gateway, 82 const in6_addr_t *src_addr, const in6_addr_t *brd_addr, 83 const in6_addr_t *author, ipif_t *ipif, mblk_t *mp) 84 { 85 rt_msghdr_t *rtm; 86 sin6_t *sin6; 87 size_t data_size, header_size; 88 uchar_t *cp; 89 int i; 90 91 ASSERT(mp != NULL); 92 /* 93 * First find the type of the message 94 * and its length. 95 */ 96 header_size = rts_header_msg_size(type); 97 /* 98 * Now find the size of the data 99 * that follows the message header. 100 */ 101 data_size = rts_data_msg_size(rtm_addrs, AF_INET6); 102 103 rtm = (rt_msghdr_t *)mp->b_rptr; 104 mp->b_wptr = &mp->b_rptr[header_size]; 105 cp = mp->b_wptr; 106 bzero(cp, data_size); 107 for (i = 0; i < RTA_NUMBITS; i++) { 108 sin6 = (sin6_t *)cp; 109 switch (rtm_addrs & (1 << i)) { 110 case RTA_DST: 111 sin6->sin6_addr = *dst; 112 sin6->sin6_family = AF_INET6; 113 cp += sizeof (sin6_t); 114 break; 115 case RTA_GATEWAY: 116 sin6->sin6_addr = *gateway; 117 sin6->sin6_family = AF_INET6; 118 cp += sizeof (sin6_t); 119 break; 120 case RTA_NETMASK: 121 sin6->sin6_addr = *mask; 122 sin6->sin6_family = AF_INET6; 123 cp += sizeof (sin6_t); 124 break; 125 case RTA_IFA: 126 case RTA_SRC: 127 sin6->sin6_addr = *src_addr; 128 sin6->sin6_family = AF_INET6; 129 cp += sizeof (sin6_t); 130 break; 131 case RTA_IFP: 132 cp += ill_dls_info((struct sockaddr_dl *)cp, ipif); 133 break; 134 case RTA_AUTHOR: 135 sin6->sin6_addr = *author; 136 sin6->sin6_family = AF_INET6; 137 cp += sizeof (sin6_t); 138 break; 139 case RTA_BRD: 140 /* 141 * RTA_BRD is used typically to specify a point-to-point 142 * destination address. 143 */ 144 sin6->sin6_addr = *brd_addr; 145 sin6->sin6_family = AF_INET6; 146 cp += sizeof (sin6_t); 147 break; 148 } 149 } 150 mp->b_wptr = cp; 151 mp->b_cont = NULL; 152 /* 153 * set the fields that are common to 154 * to different messages. 155 */ 156 rtm->rtm_msglen = (short)(header_size + data_size); 157 rtm->rtm_version = RTM_VERSION; 158 rtm->rtm_type = (uchar_t)type; 159 } 160 161 /* 162 * This routine is called to generate a message to the routing 163 * socket indicating that a redirect has occured, a routing lookup 164 * has failed, or that a protocol has detected timeouts to a particular 165 * destination. This routine is called for message types RTM_LOSING, 166 * RTM_REDIRECT, and RTM_MISS. 167 */ 168 void 169 ip_rts_change_v6(int type, const in6_addr_t *dst_addr, 170 const in6_addr_t *gw_addr, const in6_addr_t *net_mask, 171 const in6_addr_t *source, const in6_addr_t *author, 172 int flags, int error, int rtm_addrs) 173 { 174 rt_msghdr_t *rtm; 175 mblk_t *mp; 176 177 if (rtm_addrs == 0) 178 return; 179 mp = rts_alloc_msg(type, rtm_addrs, AF_INET6); 180 if (mp == NULL) 181 return; 182 rts_fill_msg_v6(type, rtm_addrs, dst_addr, net_mask, gw_addr, source, 183 &ipv6_all_zeros, author, NULL, mp); 184 rtm = (rt_msghdr_t *)mp->b_rptr; 185 rtm->rtm_flags = flags; 186 rtm->rtm_errno = error; 187 rtm->rtm_flags |= RTF_DONE; 188 rtm->rtm_addrs = rtm_addrs; 189 rts_queue_input(mp, NULL, AF_INET6); 190 } 191