1 /* 2 * Copyright 2009 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 /* 42 * This file contains routines that processes routing socket requests. 43 */ 44 45 #include <sys/types.h> 46 #include <sys/stream.h> 47 #include <sys/stropts.h> 48 #include <sys/strlog.h> 49 #include <sys/dlpi.h> 50 #include <sys/ddi.h> 51 #include <sys/cmn_err.h> 52 #include <sys/debug.h> 53 54 #include <sys/systm.h> 55 #include <sys/param.h> 56 #include <sys/socket.h> 57 #define _SUN_TPI_VERSION 2 58 #include <sys/tihdr.h> 59 #include <net/if.h> 60 #include <net/route.h> 61 #include <netinet/in.h> 62 #include <net/if_dl.h> 63 #include <netinet/ip6.h> 64 65 #include <inet/common.h> 66 #include <inet/mi.h> 67 #include <inet/ip.h> 68 #include <inet/ip6.h> 69 #include <inet/ip_if.h> 70 #include <inet/ip_ire.h> 71 #include <inet/ip_rts.h> 72 #include <inet/ip_multi.h> 73 #include <sys/tsol/tndb.h> 74 #include <sys/tsol/tnet.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, const in6_addr_t *ifaddr, const ill_t *ill, 84 mblk_t *mp, const tsol_gc_t *gc) 85 { 86 rt_msghdr_t *rtm; 87 sin6_t *sin6; 88 size_t data_size, header_size; 89 uchar_t *cp; 90 int i; 91 92 ASSERT(mp != NULL); 93 /* 94 * First find the type of the message 95 * and its length. 96 */ 97 header_size = rts_header_msg_size(type); 98 /* 99 * Now find the size of the data 100 * that follows the message header. 101 */ 102 data_size = rts_data_msg_size(rtm_addrs, AF_INET6, gc != NULL ? 1 : 0); 103 104 rtm = (rt_msghdr_t *)mp->b_rptr; 105 mp->b_wptr = &mp->b_rptr[header_size]; 106 cp = mp->b_wptr; 107 bzero(cp, data_size); 108 for (i = 0; i < RTA_NUMBITS; i++) { 109 sin6 = (sin6_t *)cp; 110 switch (rtm_addrs & (1 << i)) { 111 case RTA_DST: 112 sin6->sin6_addr = *dst; 113 sin6->sin6_family = AF_INET6; 114 cp += sizeof (sin6_t); 115 break; 116 case RTA_GATEWAY: 117 sin6->sin6_addr = *gateway; 118 sin6->sin6_family = AF_INET6; 119 cp += sizeof (sin6_t); 120 break; 121 case RTA_NETMASK: 122 sin6->sin6_addr = *mask; 123 sin6->sin6_family = AF_INET6; 124 cp += sizeof (sin6_t); 125 break; 126 case RTA_IFA: 127 sin6->sin6_addr = *ifaddr; 128 sin6->sin6_family = AF_INET6; 129 cp += sizeof (sin6_t); 130 break; 131 case RTA_SRC: 132 sin6->sin6_addr = *src_addr; 133 sin6->sin6_family = AF_INET6; 134 cp += sizeof (sin6_t); 135 break; 136 case RTA_IFP: 137 cp += ill_dls_info((struct sockaddr_dl *)cp, ill); 138 break; 139 case RTA_AUTHOR: 140 sin6->sin6_addr = *author; 141 sin6->sin6_family = AF_INET6; 142 cp += sizeof (sin6_t); 143 break; 144 case RTA_BRD: 145 /* 146 * RTA_BRD is used typically to specify a point-to-point 147 * destination address. 148 */ 149 sin6->sin6_addr = *brd_addr; 150 sin6->sin6_family = AF_INET6; 151 cp += sizeof (sin6_t); 152 break; 153 } 154 } 155 156 if (gc != NULL) { 157 rtm_ext_t *rtm_ext; 158 struct rtsa_s *rp_dst; 159 tsol_rtsecattr_t *rsap; 160 161 ASSERT(gc->gc_grp != NULL); 162 ASSERT(RW_LOCK_HELD(&gc->gc_grp->gcgrp_rwlock)); 163 164 rtm_ext = (rtm_ext_t *)cp; 165 rtm_ext->rtmex_type = RTMEX_GATEWAY_SECATTR; 166 rtm_ext->rtmex_len = TSOL_RTSECATTR_SIZE(1); 167 168 rsap = (tsol_rtsecattr_t *)(rtm_ext + 1); 169 rsap->rtsa_cnt = 1; 170 rp_dst = rsap->rtsa_attr; 171 172 ASSERT(gc->gc_db != NULL); 173 bcopy(&gc->gc_db->gcdb_attr, rp_dst, sizeof (*rp_dst)); 174 cp = (uchar_t *)rp_dst; 175 } 176 177 mp->b_wptr = cp; 178 mp->b_cont = NULL; 179 /* 180 * set the fields that are common to 181 * to different messages. 182 */ 183 rtm->rtm_msglen = (short)(header_size + data_size); 184 rtm->rtm_version = RTM_VERSION; 185 rtm->rtm_type = (uchar_t)type; 186 } 187 188 /* 189 * This routine is called to generate a message to the routing 190 * socket indicating that a redirect has occured, a routing lookup 191 * has failed, or that a protocol has detected timeouts to a particular 192 * destination. This routine is called for message types RTM_LOSING, 193 * RTM_REDIRECT, and RTM_MISS. 194 */ 195 void 196 ip_rts_change_v6(int type, const in6_addr_t *dst_addr, 197 const in6_addr_t *gw_addr, const in6_addr_t *net_mask, 198 const in6_addr_t *source, const in6_addr_t *author, 199 int flags, int error, int rtm_addrs, ip_stack_t *ipst) 200 { 201 rt_msghdr_t *rtm; 202 mblk_t *mp; 203 204 if (rtm_addrs == 0) 205 return; 206 mp = rts_alloc_msg(type, rtm_addrs, AF_INET6, 0); 207 if (mp == NULL) 208 return; 209 rts_fill_msg_v6(type, rtm_addrs, dst_addr, net_mask, gw_addr, source, 210 &ipv6_all_zeros, &ipv6_all_zeros, author, NULL, mp, NULL); 211 rtm = (rt_msghdr_t *)mp->b_rptr; 212 rtm->rtm_flags = flags; 213 rtm->rtm_errno = error; 214 rtm->rtm_flags |= RTF_DONE; 215 rtm->rtm_addrs = rtm_addrs; 216 rts_queue_input(mp, NULL, AF_INET6, RTSQ_ALL, ipst); 217 } 218