1 /* 2 * Copyright 2006 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 #include <sys/tsol/tndb.h> 76 #include <sys/tsol/tnet.h> 77 78 /* 79 * Fills the message with the given info. 80 */ 81 void 82 rts_fill_msg_v6(int type, int rtm_addrs, const in6_addr_t *dst, 83 const in6_addr_t *mask, const in6_addr_t *gateway, 84 const in6_addr_t *src_addr, const in6_addr_t *brd_addr, 85 const in6_addr_t *author, const ipif_t *ipif, mblk_t *mp, 86 uint_t sacnt, const tsol_gc_t *gc) 87 { 88 rt_msghdr_t *rtm; 89 sin6_t *sin6; 90 size_t data_size, header_size; 91 uchar_t *cp; 92 int i; 93 94 ASSERT(mp != NULL); 95 ASSERT(sacnt == 0 || gc != NULL); 96 /* 97 * First find the type of the message 98 * and its length. 99 */ 100 header_size = rts_header_msg_size(type); 101 /* 102 * Now find the size of the data 103 * that follows the message header. 104 */ 105 data_size = rts_data_msg_size(rtm_addrs, AF_INET6, sacnt); 106 107 rtm = (rt_msghdr_t *)mp->b_rptr; 108 mp->b_wptr = &mp->b_rptr[header_size]; 109 cp = mp->b_wptr; 110 bzero(cp, data_size); 111 for (i = 0; i < RTA_NUMBITS; i++) { 112 sin6 = (sin6_t *)cp; 113 switch (rtm_addrs & (1 << i)) { 114 case RTA_DST: 115 sin6->sin6_addr = *dst; 116 sin6->sin6_family = AF_INET6; 117 cp += sizeof (sin6_t); 118 break; 119 case RTA_GATEWAY: 120 sin6->sin6_addr = *gateway; 121 sin6->sin6_family = AF_INET6; 122 cp += sizeof (sin6_t); 123 break; 124 case RTA_NETMASK: 125 sin6->sin6_addr = *mask; 126 sin6->sin6_family = AF_INET6; 127 cp += sizeof (sin6_t); 128 break; 129 case RTA_IFA: 130 case RTA_SRC: 131 sin6->sin6_addr = *src_addr; 132 sin6->sin6_family = AF_INET6; 133 cp += sizeof (sin6_t); 134 break; 135 case RTA_IFP: 136 cp += ill_dls_info((struct sockaddr_dl *)cp, ipif); 137 break; 138 case RTA_AUTHOR: 139 sin6->sin6_addr = *author; 140 sin6->sin6_family = AF_INET6; 141 cp += sizeof (sin6_t); 142 break; 143 case RTA_BRD: 144 /* 145 * RTA_BRD is used typically to specify a point-to-point 146 * destination address. 147 */ 148 sin6->sin6_addr = *brd_addr; 149 sin6->sin6_family = AF_INET6; 150 cp += sizeof (sin6_t); 151 break; 152 } 153 } 154 155 if (gc != NULL) { 156 rtm_ext_t *rtm_ext; 157 struct rtsa_s *rp_dst; 158 tsol_rtsecattr_t *rsap; 159 int i; 160 161 ASSERT(gc->gc_grp != NULL); 162 ASSERT(RW_LOCK_HELD(&gc->gc_grp->gcgrp_rwlock)); 163 ASSERT(sacnt > 0); 164 165 rtm_ext = (rtm_ext_t *)cp; 166 rtm_ext->rtmex_type = RTMEX_GATEWAY_SECATTR; 167 rtm_ext->rtmex_len = TSOL_RTSECATTR_SIZE(sacnt); 168 169 rsap = (tsol_rtsecattr_t *)(rtm_ext + 1); 170 rsap->rtsa_cnt = sacnt; 171 rp_dst = rsap->rtsa_attr; 172 173 for (i = 0; i < sacnt; i++, gc = gc->gc_next, rp_dst++) { 174 ASSERT(gc->gc_db != NULL); 175 bcopy(&gc->gc_db->gcdb_attr, rp_dst, sizeof (*rp_dst)); 176 } 177 cp = (uchar_t *)rp_dst; 178 } 179 180 mp->b_wptr = cp; 181 mp->b_cont = NULL; 182 /* 183 * set the fields that are common to 184 * to different messages. 185 */ 186 rtm->rtm_msglen = (short)(header_size + data_size); 187 rtm->rtm_version = RTM_VERSION; 188 rtm->rtm_type = (uchar_t)type; 189 } 190 191 /* 192 * This routine is called to generate a message to the routing 193 * socket indicating that a redirect has occured, a routing lookup 194 * has failed, or that a protocol has detected timeouts to a particular 195 * destination. This routine is called for message types RTM_LOSING, 196 * RTM_REDIRECT, and RTM_MISS. 197 */ 198 void 199 ip_rts_change_v6(int type, const in6_addr_t *dst_addr, 200 const in6_addr_t *gw_addr, const in6_addr_t *net_mask, 201 const in6_addr_t *source, const in6_addr_t *author, 202 int flags, int error, int rtm_addrs) 203 { 204 rt_msghdr_t *rtm; 205 mblk_t *mp; 206 207 if (rtm_addrs == 0) 208 return; 209 mp = rts_alloc_msg(type, rtm_addrs, AF_INET6, 0); 210 if (mp == NULL) 211 return; 212 rts_fill_msg_v6(type, rtm_addrs, dst_addr, net_mask, gw_addr, source, 213 &ipv6_all_zeros, author, NULL, mp, 0, NULL); 214 rtm = (rt_msghdr_t *)mp->b_rptr; 215 rtm->rtm_flags = flags; 216 rtm->rtm_errno = error; 217 rtm->rtm_flags |= RTF_DONE; 218 rtm->rtm_addrs = rtm_addrs; 219 rts_queue_input(mp, NULL, AF_INET6); 220 } 221