mpls_proto.c revision 1.24
1 /* $NetBSD: mpls_proto.c,v 1.24 2014/08/09 05:33:01 rtr Exp $ */ 2 3 /* 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Mihai Chelaru <kefren (at) NetBSD.org> 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: mpls_proto.c,v 1.24 2014/08/09 05:33:01 rtr Exp $"); 34 35 #include "opt_inet.h" 36 #include "opt_mbuftrace.h" 37 38 #include <sys/param.h> 39 #include <sys/socket.h> 40 #include <sys/protosw.h> 41 #include <sys/domain.h> 42 #include <sys/socketvar.h> 43 #include <sys/sysctl.h> 44 45 #include <net/route.h> 46 47 #include <netmpls/mpls.h> 48 #include <netmpls/mpls_var.h> 49 50 struct ifqueue mplsintrq; 51 52 static int mpls_attach(struct socket *, int); 53 static void sysctl_net_mpls_setup(struct sysctllog **); 54 55 #ifdef MBUFTRACE 56 struct mowner mpls_owner = MOWNER_INIT("MPLS", ""); 57 #endif 58 59 int mpls_defttl = 255; 60 int mpls_mapttl_inet = 1; 61 int mpls_mapttl_inet6 = 1; 62 int mpls_icmp_respond = 0; 63 int mpls_forwarding = 0; 64 int mpls_frame_accept = 0; 65 int mpls_mapprec_inet = 1; 66 int mpls_mapclass_inet6 = 1; 67 int mpls_rfc4182 = 1; 68 69 void mpls_init(void) 70 { 71 #ifdef MBUFTRACE 72 MOWNER_ATTACH(&mpls_owner); 73 #endif 74 memset(&mplsintrq, 0, sizeof(mplsintrq)); 75 mplsintrq.ifq_maxlen = 256; 76 77 sysctl_net_mpls_setup(NULL); 78 } 79 80 static int 81 mpls_attach(struct socket *so, int proto) 82 { 83 int error = EOPNOTSUPP; 84 85 sosetlock(so); 86 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 87 error = soreserve(so, 8192, 8192); 88 } 89 return error; 90 } 91 92 static void 93 mpls_detach(struct socket *so) 94 { 95 } 96 97 static int 98 mpls_accept(struct socket *so, struct mbuf *nam) 99 { 100 KASSERT(solocked(so)); 101 102 return EOPNOTSUPP; 103 } 104 105 static int 106 mpls_bind(struct socket *so, struct mbuf *nam, struct lwp *l) 107 { 108 KASSERT(solocked(so)); 109 110 return EOPNOTSUPP; 111 } 112 113 static int 114 mpls_listen(struct socket *so, struct lwp *l) 115 { 116 KASSERT(solocked(so)); 117 118 return EOPNOTSUPP; 119 } 120 121 static int 122 mpls_connect(struct socket *so, struct mbuf *nam, struct lwp *l) 123 { 124 KASSERT(solocked(so)); 125 126 return EOPNOTSUPP; 127 } 128 129 static int 130 mpls_connect2(struct socket *so, struct socket *so2) 131 { 132 KASSERT(solocked(so)); 133 134 return EOPNOTSUPP; 135 } 136 137 static int 138 mpls_disconnect(struct socket *so) 139 { 140 KASSERT(solocked(so)); 141 142 return EOPNOTSUPP; 143 } 144 145 static int 146 mpls_shutdown(struct socket *so) 147 { 148 KASSERT(solocked(so)); 149 150 return EOPNOTSUPP; 151 } 152 153 static int 154 mpls_abort(struct socket *so) 155 { 156 KASSERT(solocked(so)); 157 158 return EOPNOTSUPP; 159 } 160 161 static int 162 mpls_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 163 { 164 return EOPNOTSUPP; 165 } 166 167 static int 168 mpls_stat(struct socket *so, struct stat *ub) 169 { 170 KASSERT(solocked(so)); 171 172 return EOPNOTSUPP; 173 } 174 175 static int 176 mpls_peeraddr(struct socket *so, struct mbuf *nam) 177 { 178 KASSERT(solocked(so)); 179 180 return EOPNOTSUPP; 181 } 182 183 static int 184 mpls_sockaddr(struct socket *so, struct mbuf *nam) 185 { 186 KASSERT(solocked(so)); 187 188 return EOPNOTSUPP; 189 } 190 191 static int 192 mpls_rcvd(struct socket *so, int flags, struct lwp *l) 193 { 194 KASSERT(solocked(so)); 195 196 return EOPNOTSUPP; 197 } 198 199 static int 200 mpls_recvoob(struct socket *so, struct mbuf *m, int flags) 201 { 202 KASSERT(solocked(so)); 203 204 return EOPNOTSUPP; 205 } 206 207 static int 208 mpls_send(struct socket *so, struct mbuf *m, struct mbuf *nam, 209 struct mbuf *control, struct lwp *l) 210 { 211 KASSERT(solocked(so)); 212 213 return EOPNOTSUPP; 214 } 215 216 static int 217 mpls_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 218 { 219 KASSERT(solocked(so)); 220 221 return EOPNOTSUPP; 222 } 223 224 static int 225 mpls_purgeif(struct socket *so, struct ifnet *ifp) 226 { 227 228 return EOPNOTSUPP; 229 } 230 231 static int 232 mpls_usrreq(struct socket *so, int req, struct mbuf *m, 233 struct mbuf *nam, struct mbuf *control, struct lwp *l) 234 { 235 KASSERT(req != PRU_ATTACH); 236 KASSERT(req != PRU_DETACH); 237 KASSERT(req != PRU_ACCEPT); 238 KASSERT(req != PRU_BIND); 239 KASSERT(req != PRU_LISTEN); 240 KASSERT(req != PRU_CONNECT); 241 KASSERT(req != PRU_CONNECT2); 242 KASSERT(req != PRU_DISCONNECT); 243 KASSERT(req != PRU_SHUTDOWN); 244 KASSERT(req != PRU_ABORT); 245 KASSERT(req != PRU_CONTROL); 246 KASSERT(req != PRU_SENSE); 247 KASSERT(req != PRU_PEERADDR); 248 KASSERT(req != PRU_SOCKADDR); 249 KASSERT(req != PRU_RCVD); 250 KASSERT(req != PRU_RCVOOB); 251 KASSERT(req != PRU_SEND); 252 KASSERT(req != PRU_SENDOOB); 253 KASSERT(req != PRU_PURGEIF); 254 255 return EOPNOTSUPP; 256 } 257 258 /* 259 * Sysctl for MPLS variables. 260 */ 261 static void 262 sysctl_net_mpls_setup(struct sysctllog **clog) 263 { 264 265 sysctl_createv(clog, 0, NULL, NULL, 266 CTLFLAG_PERMANENT, 267 CTLTYPE_NODE, "mpls", NULL, 268 NULL, 0, NULL, 0, 269 CTL_NET, PF_MPLS, CTL_EOL); 270 271 sysctl_createv(clog, 0, NULL, NULL, 272 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 273 CTLTYPE_INT, "ttl", 274 SYSCTL_DESCR("Default TTL"), 275 NULL, 0, &mpls_defttl, 0, 276 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 277 sysctl_createv(clog, 0, NULL, NULL, 278 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 279 CTLTYPE_INT, "forwarding", 280 SYSCTL_DESCR("MPLS forwarding"), 281 NULL, 0, &mpls_forwarding, 0, 282 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 283 sysctl_createv(clog, 0, NULL, NULL, 284 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 285 CTLTYPE_INT, "accept", 286 SYSCTL_DESCR("Accept MPLS Frames"), 287 NULL, 0, &mpls_frame_accept, 0, 288 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 289 sysctl_createv(clog, 0, NULL, NULL, 290 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 291 CTLTYPE_INT, "ifq_len", 292 SYSCTL_DESCR("MPLS queue length"), 293 NULL, 0, &mplsintrq.ifq_maxlen, 0, 294 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 295 sysctl_createv(clog, 0, NULL, NULL, 296 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 297 CTLTYPE_INT, "rfc4182", 298 SYSCTL_DESCR("RFC 4182 conformance"), 299 NULL, 0, &mpls_rfc4182, 0, 300 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 301 #ifdef INET 302 sysctl_createv(clog, 0, NULL, NULL, 303 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 304 CTLTYPE_INT, "inet_mapttl", 305 SYSCTL_DESCR("Map IP TTL"), 306 NULL, 0, &mpls_mapttl_inet, 0, 307 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 308 sysctl_createv(clog, 0, NULL, NULL, 309 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 310 CTLTYPE_INT, "inet_map_prec", 311 SYSCTL_DESCR("Map IP Prec"), 312 NULL, 0, &mpls_mapprec_inet, 0, 313 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 314 sysctl_createv(clog, 0, NULL, NULL, 315 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 316 CTLTYPE_INT, "icmp_respond", 317 SYSCTL_DESCR("Emit ICMP packets on errors"), 318 NULL, 0, &mpls_icmp_respond, 0, 319 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 320 #endif 321 #ifdef INET6 322 sysctl_createv(clog, 0, NULL, NULL, 323 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 324 CTLTYPE_INT, "inet6_mapttl", 325 SYSCTL_DESCR("Map IP6 TTL"), 326 NULL, 0, &mpls_mapttl_inet6, 0, 327 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 328 sysctl_createv(clog, 0, NULL, NULL, 329 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 330 CTLTYPE_INT, "inet6_map_prec", 331 SYSCTL_DESCR("Map IP6 class"), 332 NULL, 0, &mpls_mapclass_inet6, 0, 333 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 334 #endif 335 } 336 337 DOMAIN_DEFINE(mplsdomain); 338 339 PR_WRAP_USRREQS(mpls) 340 #define mpls_attach mpls_attach_wrapper 341 #define mpls_detach mpls_detach_wrapper 342 #define mpls_accept mpls_accept_wrapper 343 #define mpls_bind mpls_bind_wrapper 344 #define mpls_listen mpls_listen_wrapper 345 #define mpls_connect mpls_connect_wrapper 346 #define mpls_connect2 mpls_connect2_wrapper 347 #define mpls_disconnect mpls_disconnect_wrapper 348 #define mpls_shutdown mpls_shutdown_wrapper 349 #define mpls_abort mpls_abort_wrapper 350 #define mpls_ioctl mpls_ioctl_wrapper 351 #define mpls_stat mpls_stat_wrapper 352 #define mpls_peeraddr mpls_peeraddr_wrapper 353 #define mpls_sockaddr mpls_sockaddr_wrapper 354 #define mpls_rcvd mpls_rcvd_wrapper 355 #define mpls_recvoob mpls_recvoob_wrapper 356 #define mpls_send mpls_send_wrapper 357 #define mpls_sendoob mpls_sendoob_wrapper 358 #define mpls_purgeif mpls_purgeif_wrapper 359 #define mpls_usrreq mpls_usrreq_wrapper 360 361 static const struct pr_usrreqs mpls_usrreqs = { 362 .pr_attach = mpls_attach, 363 .pr_detach = mpls_detach, 364 .pr_accept = mpls_accept, 365 .pr_bind = mpls_bind, 366 .pr_listen = mpls_listen, 367 .pr_connect = mpls_connect, 368 .pr_connect2 = mpls_connect2, 369 .pr_disconnect = mpls_disconnect, 370 .pr_shutdown = mpls_shutdown, 371 .pr_abort = mpls_abort, 372 .pr_ioctl = mpls_ioctl, 373 .pr_stat = mpls_stat, 374 .pr_peeraddr = mpls_peeraddr, 375 .pr_sockaddr = mpls_sockaddr, 376 .pr_rcvd = mpls_rcvd, 377 .pr_recvoob = mpls_recvoob, 378 .pr_send = mpls_send, 379 .pr_sendoob = mpls_sendoob, 380 .pr_purgeif = mpls_purgeif, 381 .pr_generic = mpls_usrreq, 382 }; 383 384 const struct protosw mplssw[] = { 385 { .pr_domain = &mplsdomain, 386 .pr_init = mpls_init, 387 }, 388 { 389 .pr_type = SOCK_DGRAM, 390 .pr_domain = &mplsdomain, 391 .pr_flags = PR_ATOMIC | PR_ADDR, 392 .pr_usrreqs = &mpls_usrreqs, 393 }, 394 { 395 .pr_type = SOCK_RAW, 396 .pr_domain = &mplsdomain, 397 .pr_flags = PR_ATOMIC | PR_ADDR, 398 .pr_usrreqs = &mpls_usrreqs, 399 }, 400 }; 401 402 struct domain mplsdomain = { 403 .dom_family = PF_MPLS, 404 .dom_name = "MPLS", 405 .dom_init = NULL, 406 .dom_externalize = NULL, 407 .dom_dispose = NULL, 408 .dom_protosw = mplssw, 409 .dom_protoswNPROTOSW = &mplssw[__arraycount(mplssw)], 410 .dom_rtattach = rt_inithead, 411 .dom_rtoffset = offsetof(struct sockaddr_mpls, smpls_addr) << 3, 412 .dom_maxrtkey = sizeof(union mpls_shim), 413 .dom_ifattach = NULL, 414 .dom_ifdetach = NULL, 415 .dom_ifqueues = { &mplsintrq, NULL }, 416 .dom_link = { NULL }, 417 .dom_mowner = MOWNER_INIT("MPLS", ""), 418 .dom_sa_cmpofs = offsetof(struct sockaddr_mpls, smpls_addr), 419 .dom_sa_cmplen = sizeof(union mpls_shim), 420 .dom_rtcache = LIST_HEAD_INITIALIZER(mplsdomain.dom_rtcache) 421 }; 422
Indexes created Wed Sep 24 05:09:52 GMT 2025