mpls_proto.c revision 1.23
1 /* $NetBSD: mpls_proto.c,v 1.23 2014/08/08 03:05:45 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 1.23 2014/08/08 03:05:45 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_disconnect(struct socket *so) 131 { 132 KASSERT(solocked(so)); 133 134 return EOPNOTSUPP; 135 } 136 137 static int 138 mpls_shutdown(struct socket *so) 139 { 140 KASSERT(solocked(so)); 141 142 return EOPNOTSUPP; 143 } 144 145 static int 146 mpls_abort(struct socket *so) 147 { 148 KASSERT(solocked(so)); 149 150 return EOPNOTSUPP; 151 } 152 153 static int 154 mpls_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 155 { 156 return EOPNOTSUPP; 157 } 158 159 static int 160 mpls_stat(struct socket *so, struct stat *ub) 161 { 162 KASSERT(solocked(so)); 163 164 return EOPNOTSUPP; 165 } 166 167 static int 168 mpls_peeraddr(struct socket *so, struct mbuf *nam) 169 { 170 KASSERT(solocked(so)); 171 172 return EOPNOTSUPP; 173 } 174 175 static int 176 mpls_sockaddr(struct socket *so, struct mbuf *nam) 177 { 178 KASSERT(solocked(so)); 179 180 return EOPNOTSUPP; 181 } 182 183 static int 184 mpls_rcvd(struct socket *so, int flags, struct lwp *l) 185 { 186 KASSERT(solocked(so)); 187 188 return EOPNOTSUPP; 189 } 190 191 static int 192 mpls_recvoob(struct socket *so, struct mbuf *m, int flags) 193 { 194 KASSERT(solocked(so)); 195 196 return EOPNOTSUPP; 197 } 198 199 static int 200 mpls_send(struct socket *so, struct mbuf *m, struct mbuf *nam, 201 struct mbuf *control, struct lwp *l) 202 { 203 KASSERT(solocked(so)); 204 205 return EOPNOTSUPP; 206 } 207 208 static int 209 mpls_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 210 { 211 KASSERT(solocked(so)); 212 213 return EOPNOTSUPP; 214 } 215 216 static int 217 mpls_usrreq(struct socket *so, int req, struct mbuf *m, 218 struct mbuf *nam, struct mbuf *control, struct lwp *l) 219 { 220 221 KASSERT(req != PRU_ATTACH); 222 KASSERT(req != PRU_DETACH); 223 KASSERT(req != PRU_ACCEPT); 224 KASSERT(req != PRU_BIND); 225 KASSERT(req != PRU_LISTEN); 226 KASSERT(req != PRU_CONNECT); 227 KASSERT(req != PRU_DISCONNECT); 228 KASSERT(req != PRU_SHUTDOWN); 229 KASSERT(req != PRU_ABORT); 230 KASSERT(req != PRU_CONTROL); 231 KASSERT(req != PRU_SENSE); 232 KASSERT(req != PRU_PEERADDR); 233 KASSERT(req != PRU_SOCKADDR); 234 KASSERT(req != PRU_RCVD); 235 KASSERT(req != PRU_RCVOOB); 236 KASSERT(req != PRU_SEND); 237 KASSERT(req != PRU_SENDOOB); 238 239 return EOPNOTSUPP; 240 } 241 242 /* 243 * Sysctl for MPLS variables. 244 */ 245 static void 246 sysctl_net_mpls_setup(struct sysctllog **clog) 247 { 248 249 sysctl_createv(clog, 0, NULL, NULL, 250 CTLFLAG_PERMANENT, 251 CTLTYPE_NODE, "mpls", NULL, 252 NULL, 0, NULL, 0, 253 CTL_NET, PF_MPLS, CTL_EOL); 254 255 sysctl_createv(clog, 0, NULL, NULL, 256 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 257 CTLTYPE_INT, "ttl", 258 SYSCTL_DESCR("Default TTL"), 259 NULL, 0, &mpls_defttl, 0, 260 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 261 sysctl_createv(clog, 0, NULL, NULL, 262 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 263 CTLTYPE_INT, "forwarding", 264 SYSCTL_DESCR("MPLS forwarding"), 265 NULL, 0, &mpls_forwarding, 0, 266 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 267 sysctl_createv(clog, 0, NULL, NULL, 268 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 269 CTLTYPE_INT, "accept", 270 SYSCTL_DESCR("Accept MPLS Frames"), 271 NULL, 0, &mpls_frame_accept, 0, 272 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 273 sysctl_createv(clog, 0, NULL, NULL, 274 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 275 CTLTYPE_INT, "ifq_len", 276 SYSCTL_DESCR("MPLS queue length"), 277 NULL, 0, &mplsintrq.ifq_maxlen, 0, 278 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 279 sysctl_createv(clog, 0, NULL, NULL, 280 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 281 CTLTYPE_INT, "rfc4182", 282 SYSCTL_DESCR("RFC 4182 conformance"), 283 NULL, 0, &mpls_rfc4182, 0, 284 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 285 #ifdef INET 286 sysctl_createv(clog, 0, NULL, NULL, 287 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 288 CTLTYPE_INT, "inet_mapttl", 289 SYSCTL_DESCR("Map IP TTL"), 290 NULL, 0, &mpls_mapttl_inet, 0, 291 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 292 sysctl_createv(clog, 0, NULL, NULL, 293 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 294 CTLTYPE_INT, "inet_map_prec", 295 SYSCTL_DESCR("Map IP Prec"), 296 NULL, 0, &mpls_mapprec_inet, 0, 297 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 298 sysctl_createv(clog, 0, NULL, NULL, 299 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 300 CTLTYPE_INT, "icmp_respond", 301 SYSCTL_DESCR("Emit ICMP packets on errors"), 302 NULL, 0, &mpls_icmp_respond, 0, 303 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 304 #endif 305 #ifdef INET6 306 sysctl_createv(clog, 0, NULL, NULL, 307 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 308 CTLTYPE_INT, "inet6_mapttl", 309 SYSCTL_DESCR("Map IP6 TTL"), 310 NULL, 0, &mpls_mapttl_inet6, 0, 311 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 312 sysctl_createv(clog, 0, NULL, NULL, 313 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 314 CTLTYPE_INT, "inet6_map_prec", 315 SYSCTL_DESCR("Map IP6 class"), 316 NULL, 0, &mpls_mapclass_inet6, 0, 317 CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL); 318 #endif 319 } 320 321 DOMAIN_DEFINE(mplsdomain); 322 323 PR_WRAP_USRREQS(mpls) 324 #define mpls_attach mpls_attach_wrapper 325 #define mpls_detach mpls_detach_wrapper 326 #define mpls_accept mpls_accept_wrapper 327 #define mpls_bind mpls_bind_wrapper 328 #define mpls_listen mpls_listen_wrapper 329 #define mpls_connect mpls_connect_wrapper 330 #define mpls_disconnect mpls_disconnect_wrapper 331 #define mpls_shutdown mpls_shutdown_wrapper 332 #define mpls_abort mpls_abort_wrapper 333 #define mpls_ioctl mpls_ioctl_wrapper 334 #define mpls_stat mpls_stat_wrapper 335 #define mpls_peeraddr mpls_peeraddr_wrapper 336 #define mpls_sockaddr mpls_sockaddr_wrapper 337 #define mpls_rcvd mpls_rcvd_wrapper 338 #define mpls_recvoob mpls_recvoob_wrapper 339 #define mpls_send mpls_send_wrapper 340 #define mpls_sendoob mpls_sendoob_wrapper 341 #define mpls_usrreq mpls_usrreq_wrapper 342 343 static const struct pr_usrreqs mpls_usrreqs = { 344 .pr_attach = mpls_attach, 345 .pr_detach = mpls_detach, 346 .pr_accept = mpls_accept, 347 .pr_bind = mpls_bind, 348 .pr_listen = mpls_listen, 349 .pr_connect = mpls_connect, 350 .pr_disconnect = mpls_disconnect, 351 .pr_shutdown = mpls_shutdown, 352 .pr_abort = mpls_abort, 353 .pr_ioctl = mpls_ioctl, 354 .pr_stat = mpls_stat, 355 .pr_peeraddr = mpls_peeraddr, 356 .pr_sockaddr = mpls_sockaddr, 357 .pr_rcvd = mpls_rcvd, 358 .pr_recvoob = mpls_recvoob, 359 .pr_send = mpls_send, 360 .pr_sendoob = mpls_sendoob, 361 .pr_generic = mpls_usrreq, 362 }; 363 364 const struct protosw mplssw[] = { 365 { .pr_domain = &mplsdomain, 366 .pr_init = mpls_init, 367 }, 368 { 369 .pr_type = SOCK_DGRAM, 370 .pr_domain = &mplsdomain, 371 .pr_flags = PR_ATOMIC | PR_ADDR, 372 .pr_usrreqs = &mpls_usrreqs, 373 }, 374 { 375 .pr_type = SOCK_RAW, 376 .pr_domain = &mplsdomain, 377 .pr_flags = PR_ATOMIC | PR_ADDR, 378 .pr_usrreqs = &mpls_usrreqs, 379 }, 380 }; 381 382 struct domain mplsdomain = { 383 .dom_family = PF_MPLS, 384 .dom_name = "MPLS", 385 .dom_init = NULL, 386 .dom_externalize = NULL, 387 .dom_dispose = NULL, 388 .dom_protosw = mplssw, 389 .dom_protoswNPROTOSW = &mplssw[__arraycount(mplssw)], 390 .dom_rtattach = rt_inithead, 391 .dom_rtoffset = offsetof(struct sockaddr_mpls, smpls_addr) << 3, 392 .dom_maxrtkey = sizeof(union mpls_shim), 393 .dom_ifattach = NULL, 394 .dom_ifdetach = NULL, 395 .dom_ifqueues = { &mplsintrq, NULL }, 396 .dom_link = { NULL }, 397 .dom_mowner = MOWNER_INIT("MPLS", ""), 398 .dom_sa_cmpofs = offsetof(struct sockaddr_mpls, smpls_addr), 399 .dom_sa_cmplen = sizeof(union mpls_shim), 400 .dom_rtcache = LIST_HEAD_INITIALIZER(mplsdomain.dom_rtcache) 401 }; 402
Indexes created Tue Sep 23 07:09:52 GMT 2025