1/* $NetBSD: iso_proto.c,v 1.28 2008/04/24 11:38:38 ad Exp $ */ 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)iso_proto.c 8.2 (Berkeley) 2/9/95 32 */ 33 34/*********************************************************** 35 Copyright IBM Corporation 1987 36 37 All Rights Reserved 38 39Permission to use, copy, modify, and distribute this software and its 40documentation for any purpose and without fee is hereby granted, 41provided that the above copyright notice appear in all copies and that 42both that copyright notice and this permission notice appear in 43supporting documentation, and that the name of IBM not be 44used in advertising or publicity pertaining to distribution of the 45software without specific, written prior permission. 46 47IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 48ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL 49IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR 50ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 51WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 52ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 53SOFTWARE. 54 55******************************************************************/ 56 57/* 58 * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison 59 */ 60/* 61 * iso_proto.c : protocol switch tables in the ISO domain 62 * 63 * ISO protocol family includes TP, CLTP, CLNP, 8208 64 * TP and CLNP are implemented here. 65 */ 66 67#include <sys/cdefs.h> 68__KERNEL_RCSID(0, "$NetBSD: iso_proto.c,v 1.28 2008/04/24 11:38:38 ad Exp $"); 69 70 71#include <sys/param.h> 72#include <sys/socket.h> 73#include <sys/protosw.h> 74#include <sys/domain.h> 75#include <sys/mbuf.h> 76 77#include <net/radix.h> 78 79#include <netiso/iso.h> 80 81#include <netiso/clnp.h> 82#include <netiso/tp_param.h> 83#include <netiso/tp_var.h> 84#include <netiso/esis.h> 85#include <netiso/idrp_var.h> 86#include <netiso/iso_pcb.h> 87#include <netiso/cltp_var.h> 88 89const int isoctlerrmap[PRC_NCMDS] = { 90 0, 0, 0, 0, 91 0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH, 92 EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED, 93 EMSGSIZE, EHOSTUNREACH, 0, 0, 94 0, 0, 0, 0, 95 ENOPROTOOPT 96}; 97 98DOMAIN_DEFINE(isodomain); /* forward declare and add to link set */ 99 100/* Wrappers to acquire kernel_lock. */ 101 102PR_WRAP_USRREQ(cltp_usrreq) 103PR_WRAP_USRREQ(clnp_usrreq) 104PR_WRAP_USRREQ(idrp_usrreq) 105PR_WRAP_USRREQ(tp_usrreq) 106PR_WRAP_USRREQ(esis_usrreq) 107 108#define cltp_usrreq cltp_usrreq_wrapper 109#define clnp_usrreq clnp_usrreq_wrapper 110#define idrp_usrreq idrp_usrreq_wrapper 111#define tp_usrreq tp_usrreq_wrapper 112#define esis_usrreq esis_usrreq_wrapper 113 114PR_WRAP_CTLOUTPUT(rclnp_ctloutput) 115PR_WRAP_CTLOUTPUT(tp_ctloutput) 116 117#define rclnp_ctloutput rclnp_ctloutput_wrapper 118#define tp_ctloutput tp_ctloutput_wrapper 119 120PR_WRAP_CTLINPUT(esis_ctlinput) 121PR_WRAP_CTLINPUT(tpclnp_ctlinput) 122 123#define esis_ctlinput esis_ctlinput_wrapper 124#define tpclnp_ctlinput tpclnp_ctlinput_wrapper 125 126const struct protosw isosw[] = { 127 /* 128 * We need a datagram entry through which net mgmt programs can get 129 * to the iso_control procedure (iso ioctls). Thus, a minimal 130 * SOCK_DGRAM interface is provided here. 131 * THIS ONE MUST BE FIRST: Kludge city : socket() says if(!proto) call 132 * pffindtype, which gets the first entry that matches the type. 133 * sigh. 134 */ 135 { .pr_type = SOCK_DGRAM, 136 .pr_domain = &isodomain, 137 .pr_protocol = ISOPROTO_CLTP, 138 .pr_flags = PR_ATOMIC | PR_ADDR, 139 .pr_input = 0, 140 .pr_output = cltp_output, 141 .pr_ctlinput = 0, 142 .pr_ctloutput = 0, 143 .pr_usrreq = cltp_usrreq, 144 .pr_init = cltp_init, 145 .pr_fasttimo = 0, 146 .pr_slowtimo = 0, 147 .pr_drain = 0 148 }, 149 150 /* 151 * A datagram interface for clnp cannot co-exist with TP/CLNP 152 * because CLNP has no way to discriminate incoming TP packets from 153 * packets coming in for any other higher layer protocol. 154 * Old way: set it up so that pffindproto(... dgm, clnp) fails. 155 * New way: let pffindproto work (for x.25, thank you) but create 156 * a clnp_usrreq() that returns error on PRU_ATTACH. 157 */ 158 { .pr_type = SOCK_DGRAM, 159 .pr_domain = &isodomain, 160 .pr_protocol = ISOPROTO_CLNP, 161 .pr_flags = 0, 162 .pr_input = 0, 163 .pr_output = clnp_output, 164 .pr_ctlinput = 0, 165 .pr_ctloutput = 0, 166 .pr_usrreq = clnp_usrreq, 167 .pr_init = clnp_init, 168 .pr_fasttimo = 0, 169 .pr_slowtimo = clnp_slowtimo, 170 .pr_drain = clnp_drain, 171 }, 172 173 /* raw clnp */ 174 { .pr_type = SOCK_RAW, 175 .pr_domain = &isodomain, 176 .pr_protocol = ISOPROTO_RAW, 177 .pr_flags = PR_ATOMIC | PR_ADDR, 178 .pr_input = rclnp_input, 179 .pr_output = rclnp_output, 180 .pr_ctlinput = 0, 181 .pr_ctloutput = rclnp_ctloutput, 182 .pr_usrreq = clnp_usrreq, 183 .pr_init = 0, 184 .pr_fasttimo = 0, 185 .pr_slowtimo = 0, 186 .pr_drain = 0 187 }, 188 189 /* ES-IS protocol */ 190 { .pr_type = SOCK_DGRAM, 191 .pr_domain = &isodomain, 192 .pr_protocol = ISOPROTO_ESIS, 193 .pr_flags = PR_ATOMIC | PR_ADDR, 194 .pr_input = esis_input, 195 .pr_output = 0, 196 .pr_ctlinput = esis_ctlinput, 197 .pr_ctloutput = 0, 198 .pr_usrreq = esis_usrreq, 199 .pr_init = esis_init, 200 .pr_fasttimo = 0, 201 .pr_slowtimo = 0, 202 .pr_drain = 0 203 }, 204 205 /* ISOPROTO_INTRAISIS */ 206 { .pr_type = SOCK_DGRAM, 207 .pr_domain = &isodomain, 208 .pr_protocol = ISOPROTO_INTRAISIS, 209 .pr_flags = PR_ATOMIC | PR_ADDR, 210 .pr_input = isis_input, 211 .pr_output = 0, 212 .pr_ctlinput = 0, 213 .pr_ctloutput = 0, 214 .pr_usrreq = esis_usrreq, 215 .pr_init = 0, 216 .pr_fasttimo = 0, 217 .pr_slowtimo = 0, 218 .pr_drain = 0 219 }, 220 221 /* ISOPROTO_IDRP */ 222 { .pr_type = SOCK_DGRAM, 223 .pr_domain = &isodomain, 224 .pr_protocol = ISOPROTO_IDRP, 225 .pr_flags = PR_ATOMIC | PR_ADDR, 226 .pr_input = idrp_input, 227 .pr_output = 0, 228 .pr_ctlinput = 0, 229 .pr_ctloutput = 0, 230 .pr_usrreq = idrp_usrreq, 231 .pr_init = idrp_init, 232 .pr_fasttimo = 0, 233 .pr_slowtimo = 0, 234 .pr_drain = 0 235 }, 236 237 /* ISOPROTO_TP */ 238 { .pr_type = SOCK_SEQPACKET, 239 .pr_domain = &isodomain, 240 .pr_protocol = ISOPROTO_TP, 241 .pr_flags = PR_CONNREQUIRED | PR_WANTRCVD | PR_LISTEN | PR_ABRTACPTDIS, 242 .pr_input = tpclnp_input, 243 .pr_output = 0, 244 .pr_ctlinput = tpclnp_ctlinput, 245 .pr_ctloutput = tp_ctloutput, 246 .pr_usrreq = tp_usrreq, 247 .pr_init = tp_init, 248 .pr_fasttimo = tp_fasttimo, 249 .pr_slowtimo = tp_slowtimo, 250 .pr_drain = tp_drain, 251 }, 252}; 253 254extern struct ifqueue clnlintrq; 255 256struct domain isodomain = { 257 .dom_family = PF_ISO, 258 .dom_name = "iso-domain", 259 .dom_init = NULL, 260 .dom_externalize = NULL, 261 .dom_dispose = NULL, 262 .dom_protosw = isosw, 263 .dom_protoswNPROTOSW = &isosw[sizeof(isosw) / sizeof(isosw[0])], 264 .dom_rtattach = rt_inithead, 265 .dom_rtoffset = 48, 266 .dom_maxrtkey = sizeof(struct sockaddr_iso), /* maxkeylen */ 267 .dom_ifattach = NULL, 268 .dom_ifdetach = NULL, 269 .dom_ifqueues = { &clnlintrq, NULL }, /* ifqueues */ 270 .dom_link = { NULL }, 271 .dom_mowner = MOWNER_INIT("",""), 272 .dom_rtcache = LIST_HEAD_INITIALIZER(isodomain.dom_rtcache), 273 .dom_sockaddr_cmp = sockaddr_iso_cmp 274}; 275 276int 277sockaddr_iso_cmp(const struct sockaddr *sa1, const struct sockaddr *sa2) 278{ 279 int rc; 280 uint_fast8_t len, nlen; 281 const uint_fast8_t addrofs = offsetof(struct sockaddr_iso, siso_data); 282 const struct sockaddr_iso *siso1, *siso2; 283 284 siso1 = satocsiso(sa1); 285 siso2 = satocsiso(sa2); 286 287 len = MIN(siso1->siso_len, siso2->siso_len); 288 /* No siso_nlen present? */ 289 if (len < addrofs) 290 return siso1->siso_len - siso2->siso_len; 291 292 nlen = MIN(siso1->siso_nlen, siso2->siso_nlen); 293 if (nlen > addrofs && 294 (rc = memcmp(siso1->siso_data, siso2->siso_data, nlen)) != 0) 295 return rc; 296 297 return siso1->siso_nlen - siso2->siso_nlen; 298} 299