1 /*- 2 * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/usr.sbin/ppp/ether.c,v 1.9.2.14 2002/09/01 02:12:26 brian Exp $ 27 * $DragonFly: src/usr.sbin/ppp/ether.c,v 1.3 2003/08/08 04:18:47 dillon Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/socket.h> 32 #include <sys/un.h> 33 #include <netinet/in.h> 34 #include <arpa/inet.h> 35 #include <netdb.h> 36 #include <netgraph.h> 37 #include <net/ethernet.h> 38 #include <net/if.h> 39 #include <net/route.h> 40 #include <netinet/in_systm.h> 41 #include <netinet/ip.h> 42 #include <netgraph/ether/ng_ether.h> 43 #include <netgraph/ng_message.h> 44 #include <netgraph/pppoe/ng_pppoe.h> 45 #include <netgraph/socket/ng_socket.h> 46 47 #include <errno.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <sysexits.h> 52 #include <sys/fcntl.h> 53 #include <sys/stat.h> 54 #include <sys/uio.h> 55 #include <termios.h> 56 #include <sys/time.h> 57 #include <syslog.h> 58 #include <unistd.h> 59 60 #include "layer.h" 61 #include "defs.h" 62 #include "mbuf.h" 63 #include "log.h" 64 #include "timer.h" 65 #include "lqr.h" 66 #include "hdlc.h" 67 #include "throughput.h" 68 #include "fsm.h" 69 #include "lcp.h" 70 #include "ccp.h" 71 #include "link.h" 72 #include "async.h" 73 #include "descriptor.h" 74 #include "physical.h" 75 #include "main.h" 76 #include "mp.h" 77 #include "chat.h" 78 #include "auth.h" 79 #include "chap.h" 80 #include "cbcp.h" 81 #include "datalink.h" 82 #include "slcompress.h" 83 #include "iplist.h" 84 #include "ncpaddr.h" 85 #include "ip.h" 86 #include "ipcp.h" 87 #include "filter.h" 88 #ifndef NORADIUS 89 #include "radius.h" 90 #endif 91 #include "ipv6cp.h" 92 #include "ncp.h" 93 #include "bundle.h" 94 #include "id.h" 95 #include "iface.h" 96 #include "route.h" 97 #include "ether.h" 98 99 100 #define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 101 102 struct etherdevice { 103 struct device dev; /* What struct physical knows about */ 104 int cs; /* Control socket */ 105 int connected; /* Are we connected yet ? */ 106 int timeout; /* Seconds attempting to connect */ 107 char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 108 u_int32_t slot; /* ifindex << 24 | unit */ 109 }; 110 111 #define device2ether(d) \ 112 ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL) 113 114 int 115 ether_DeviceSize(void) 116 { 117 return sizeof(struct etherdevice); 118 } 119 120 static ssize_t 121 ether_Write(struct physical *p, const void *v, size_t n) 122 { 123 struct etherdevice *dev = device2ether(p->handler); 124 125 return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : n; 126 } 127 128 static ssize_t 129 ether_Read(struct physical *p, void *v, size_t n) 130 { 131 char hook[sizeof TUN_NAME + 11]; 132 133 return NgRecvData(p->fd, v, n, hook); 134 } 135 136 static int 137 ether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 138 { 139 struct etherdevice *dev = device2ether(p->handler); 140 int result; 141 142 if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) { 143 FD_CLR(dev->cs, r); 144 log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs); 145 result = 1; 146 } else 147 result = 0; 148 149 /* Careful... physical_RemoveFromSet() called us ! */ 150 151 p->handler->removefromset = NULL; 152 result += physical_RemoveFromSet(p, r, w, e); 153 p->handler->removefromset = ether_RemoveFromSet; 154 155 return result; 156 } 157 158 static void 159 ether_Free(struct physical *p) 160 { 161 struct etherdevice *dev = device2ether(p->handler); 162 163 physical_SetDescriptor(p); 164 if (dev->cs != -1) 165 close(dev->cs); 166 free(dev); 167 } 168 169 static const char * 170 ether_OpenInfo(struct physical *p) 171 { 172 struct etherdevice *dev = device2ether(p->handler); 173 174 switch (dev->connected) { 175 case CARRIER_PENDING: 176 return "negotiating"; 177 case CARRIER_OK: 178 return "established"; 179 } 180 181 return "disconnected"; 182 } 183 184 static int 185 ether_Slot(struct physical *p) 186 { 187 struct etherdevice *dev = device2ether(p->handler); 188 189 return dev->slot; 190 } 191 192 193 static void 194 ether_device2iov(struct device *d, struct iovec *iov, int *niov, 195 int maxiov, int *auxfd, int *nauxfd) 196 { 197 struct etherdevice *dev = device2ether(d); 198 int sz = physical_MaxDeviceSize(); 199 200 iov[*niov].iov_base = realloc(d, sz); 201 if (iov[*niov].iov_base == NULL) { 202 log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 203 AbortProgram(EX_OSERR); 204 } 205 iov[*niov].iov_len = sz; 206 (*niov)++; 207 208 if (dev->cs >= 0) { 209 *auxfd = dev->cs; 210 (*nauxfd)++; 211 } 212 } 213 214 static void 215 ether_MessageIn(struct etherdevice *dev) 216 { 217 char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 218 struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 219 struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 220 char *end, unknown[14], sessionid[5]; 221 const char *msg; 222 struct timeval t; 223 fd_set *r; 224 u_long slot; 225 int asciilen, ret; 226 227 if (dev->cs < 0) 228 return; 229 230 if ((r = mkfdset()) == NULL) { 231 log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 232 return; 233 } 234 235 while (1) { 236 zerofdset(r); 237 FD_SET(dev->cs, r); 238 t.tv_sec = t.tv_usec = 0; 239 ret = select(dev->cs + 1, r, NULL, NULL, &t); 240 241 if (ret <= 0) 242 break; 243 244 if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0) 245 break; 246 247 if (rep->header.version != NG_VERSION) { 248 log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 249 (long)rep->header.version, (long)NG_VERSION); 250 break; 251 } 252 253 if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 254 log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 255 (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 256 break; 257 } 258 259 asciilen = 0; 260 switch (rep->header.cmd) { 261 case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 262 case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 263 case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 264 case NGM_PPPOE_OFFER: msg = "OFFER"; break; 265 case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 266 case NGM_PPPOE_FAIL: msg = "FAIL"; break; 267 case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 268 case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 269 case NGM_PPPOE_ACNAME: 270 msg = "ACNAME"; 271 if (setenv("ACNAME", sts->hook, 1) != 0) 272 log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook); 273 asciilen = rep->header.arglen; 274 break; 275 case NGM_PPPOE_SESSIONID: 276 msg = "SESSIONID"; 277 snprintf(sessionid, sizeof sessionid, "%04x", *(u_int16_t *)sts); 278 if (setenv("SESSIONID", sessionid, 1) != 0) 279 syslog(LOG_WARNING, "setenv: cannot set SESSIONID=%s: %m", 280 sessionid); 281 /* Use this in preference to our interface index */ 282 slot = strtoul(sessionid, &end, 16); 283 if (end != sessionid && *end == '\0') 284 dev->slot = slot; 285 break; 286 default: 287 snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 288 msg = unknown; 289 break; 290 } 291 292 if (asciilen) 293 log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%.*s\")\n", 294 msg, asciilen, sts->hook); 295 else 296 log_Printf(LogPHASE, "Received NGM_PPPOE_%s\n", msg); 297 298 switch (rep->header.cmd) { 299 case NGM_PPPOE_SUCCESS: 300 dev->connected = CARRIER_OK; 301 break; 302 case NGM_PPPOE_FAIL: 303 case NGM_PPPOE_CLOSE: 304 dev->connected = CARRIER_LOST; 305 break; 306 } 307 } 308 free(r); 309 } 310 311 static int 312 ether_AwaitCarrier(struct physical *p) 313 { 314 struct etherdevice *dev = device2ether(p->handler); 315 316 if (dev->connected != CARRIER_OK && !dev->timeout--) 317 dev->connected = CARRIER_LOST; 318 else if (dev->connected == CARRIER_PENDING) 319 ether_MessageIn(dev); 320 321 return dev->connected; 322 } 323 324 static const struct device baseetherdevice = { 325 ETHER_DEVICE, 326 "ether", 327 1492, 328 { CD_REQUIRED, DEF_ETHERCDDELAY }, 329 ether_AwaitCarrier, 330 ether_RemoveFromSet, 331 NULL, 332 NULL, 333 NULL, 334 NULL, 335 NULL, 336 ether_Free, 337 ether_Read, 338 ether_Write, 339 ether_device2iov, 340 NULL, 341 ether_OpenInfo, 342 ether_Slot 343 }; 344 345 struct device * 346 ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 347 int maxiov, int *auxfd, int *nauxfd) 348 { 349 if (type == ETHER_DEVICE) { 350 struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 351 352 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 353 if (dev == NULL) { 354 log_Printf(LogALERT, "Failed to allocate memory: %d\n", 355 (int)(sizeof *dev)); 356 AbortProgram(EX_OSERR); 357 } 358 359 if (*nauxfd) { 360 dev->cs = *auxfd; 361 (*nauxfd)--; 362 } else 363 dev->cs = -1; 364 365 /* Refresh function pointers etc */ 366 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 367 368 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 369 return &dev->dev; 370 } 371 372 return NULL; 373 } 374 375 static int 376 ether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 377 { 378 struct physical *p = descriptor2physical(d); 379 struct etherdevice *dev = device2ether(p->handler); 380 int result; 381 382 if (r && dev->cs >= 0) { 383 FD_SET(dev->cs, r); 384 log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 385 result = 1; 386 } else 387 result = 0; 388 389 result += physical_doUpdateSet(d, r, w, e, n, 0); 390 391 return result; 392 } 393 394 static int 395 ether_IsSet(struct fdescriptor *d, const fd_set *fdset) 396 { 397 struct physical *p = descriptor2physical(d); 398 struct etherdevice *dev = device2ether(p->handler); 399 int result; 400 401 result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 402 result += physical_IsSet(d, fdset); 403 404 return result; 405 } 406 407 static void 408 ether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 409 const fd_set *fdset) 410 { 411 struct physical *p = descriptor2physical(d); 412 struct etherdevice *dev = device2ether(p->handler); 413 414 if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 415 ether_MessageIn(dev); 416 if (dev->connected == CARRIER_LOST) { 417 log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 418 datalink_Down(p->dl, CLOSE_NORMAL); 419 return; 420 } 421 } 422 423 if (physical_IsSet(d, fdset)) 424 physical_DescriptorRead(d, bundle, fdset); 425 } 426 427 static struct device * 428 ether_Abandon(struct etherdevice *dev, struct physical *p) 429 { 430 /* Abandon our node construction */ 431 close(dev->cs); 432 close(p->fd); 433 p->fd = -2; /* Nobody else need try.. */ 434 free(dev); 435 436 return NULL; 437 } 438 439 struct device * 440 ether_Create(struct physical *p) 441 { 442 u_char rbuf[2048]; 443 struct etherdevice *dev; 444 struct ng_mesg *resp; 445 const struct hooklist *hlist; 446 const struct nodeinfo *ninfo; 447 char *path, *sessionid; 448 int ifacelen, f; 449 450 dev = NULL; 451 path = NULL; 452 ifacelen = 0; 453 if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 454 PPPOE_NODE_TYPE_LEN) && 455 p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 456 const struct linkinfo *nlink; 457 struct ngpppoe_init_data *data; 458 struct ngm_mkpeer mkp; 459 struct ngm_connect ngc; 460 const char *iface, *provider; 461 char etherid[12]; 462 int providerlen; 463 char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 464 465 p->fd--; /* We own the device - change fd */ 466 467 loadmodules(LOAD_VERBOSLY, "netgraph", "ng_ether", "ng_pppoe", "ng_socket", 468 NULL); 469 470 if ((dev = malloc(sizeof *dev)) == NULL) 471 return NULL; 472 473 iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 474 475 provider = strchr(iface, ':'); 476 if (provider) { 477 ifacelen = provider - iface; 478 provider++; 479 providerlen = strlen(provider); 480 } else { 481 ifacelen = strlen(iface); 482 provider = ""; 483 providerlen = 0; 484 } 485 486 /* 487 * We're going to do this (where tunN is our tunnel device): 488 * 489 * .---------. 490 * | ether | 491 * | <iface> | dev->cs 492 * `---------' | 493 * (orphan) p->fd | 494 * | | | 495 * | | | 496 * (ethernet) | | 497 * .---------. .-----------. 498 * | pppoe | | socket | 499 * | <iface> |(tunN)<---->(tunN)| <unnamed> | 500 * `--------- `-----------' 501 * (tunX) 502 * ^ 503 * | 504 * `--->(tunX) 505 */ 506 507 /* Create a socket node */ 508 if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 509 log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 510 strerror(errno)); 511 free(dev); 512 p->fd = -2; 513 return NULL; 514 } 515 516 /* 517 * Ask for a list of hooks attached to the "ether" node. This node should 518 * magically exist as a way of hooking stuff onto an ethernet device 519 */ 520 path = (char *)alloca(ifacelen + 2); 521 sprintf(path, "%.*s:", ifacelen, iface); 522 if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 523 NULL, 0) < 0) { 524 log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 525 path, strerror(errno)); 526 return ether_Abandon(dev, p); 527 } 528 529 /* Get our list back */ 530 resp = (struct ng_mesg *)rbuf; 531 if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) <= 0) { 532 log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 533 strerror(errno)); 534 return ether_Abandon(dev, p); 535 } 536 537 hlist = (const struct hooklist *)resp->data; 538 ninfo = &hlist->nodeinfo; 539 540 /* Make sure we've got the right type of node */ 541 if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 542 sizeof NG_ETHER_NODE_TYPE - 1)) { 543 log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 544 NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 545 return ether_Abandon(dev, p); 546 } 547 548 log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 549 path, ninfo->id); 550 551 /* look for a hook already attached. */ 552 for (f = 0; f < ninfo->hooks; f++) { 553 nlink = &hlist->link[f]; 554 555 log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 556 nlink->peerhook); 557 558 if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 559 !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 560 /* 561 * Something is using the data coming out of this ``ether'' node. 562 * If it's a PPPoE node, we use that node, otherwise we complain that 563 * someone else is using the node. 564 */ 565 if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 566 /* Use this PPPoE node ! */ 567 snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 568 else { 569 log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 570 path, nlink->nodeinfo.type); 571 return ether_Abandon(dev, p); 572 } 573 break; 574 } 575 } 576 577 if (f == ninfo->hooks) { 578 /* 579 * Create a new ``PPPoE'' node connected to the ``ether'' node using 580 * the ``orphan'' and ``ethernet'' hooks 581 */ 582 snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 583 snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 584 snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 585 snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 586 587 log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 588 etherid, mkp.ourhook, mkp.peerhook); 589 590 if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 591 NGM_MKPEER, &mkp, sizeof mkp) < 0) { 592 log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 593 etherid, strerror(errno)); 594 return ether_Abandon(dev, p); 595 } 596 597 snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 598 } 599 600 snprintf(dev->hook, sizeof dev->hook, "%s%d", 601 TUN_NAME, p->dl->bundle->unit); 602 603 /* 604 * Connect the PPPoE node to our socket node. 605 * ngc.path has already been set up 606 */ 607 snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 608 memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 609 610 log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 611 ngc.ourhook, ngc.path, ngc.peerhook); 612 if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 613 NGM_CONNECT, &ngc, sizeof ngc) < 0) { 614 log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 615 "nodes: %s\n", strerror(errno)); 616 return ether_Abandon(dev, p); 617 } 618 619 /* Bring the Ethernet interface up */ 620 path[ifacelen] = '\0'; /* Remove the trailing ':' */ 621 if (!iface_SetFlags(path, IFF_UP)) 622 log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n", 623 p->link.name, path); 624 625 /* And finally, request a connection to the given provider */ 626 627 data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 628 snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 629 memcpy(data->data, provider, providerlen); 630 data->data_len = providerlen; 631 632 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 633 log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 634 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 635 NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 636 log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 637 connectpath, strerror(errno)); 638 return ether_Abandon(dev, p); 639 } 640 641 /* Hook things up so that we monitor dev->cs */ 642 p->desc.UpdateSet = ether_UpdateSet; 643 p->desc.IsSet = ether_IsSet; 644 p->desc.Read = ether_DescriptorRead; 645 646 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 647 switch (p->cfg.cd.necessity) { 648 case CD_VARIABLE: 649 dev->dev.cd.delay = p->cfg.cd.delay; 650 break; 651 case CD_REQUIRED: 652 dev->dev.cd = p->cfg.cd; 653 break; 654 case CD_NOTREQUIRED: 655 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 656 p->link.name, dev->dev.cd.delay); 657 case CD_DEFAULT: 658 break; 659 } 660 661 dev->timeout = dev->dev.cd.delay; 662 dev->connected = CARRIER_PENDING; 663 /* This will be overridden by our session id - if provided by netgraph */ 664 dev->slot = GetIfIndex(path); 665 } else { 666 /* See if we're a netgraph socket */ 667 struct stat st; 668 669 if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { 670 struct sockaddr_storage ssock; 671 struct sockaddr *sock = (struct sockaddr *)&ssock; 672 int sz; 673 674 sz = sizeof ssock; 675 if (getsockname(p->fd, sock, &sz) == -1) { 676 log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); 677 close(p->fd); 678 p->fd = -1; 679 return NULL; 680 } 681 682 if (sock->sa_family == AF_NETGRAPH) { 683 /* 684 * It's a netgraph node... We can't determine hook names etc, so we 685 * stay pretty impartial.... 686 */ 687 log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 688 689 if ((dev = malloc(sizeof *dev)) == NULL) { 690 log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 691 p->link.name, strerror(errno)); 692 return NULL; 693 } 694 695 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 696 dev->cs = -1; 697 dev->timeout = 0; 698 dev->connected = CARRIER_OK; 699 *dev->hook = '\0'; 700 701 /* 702 * If we're being envoked from pppoed(8), we may have a SESSIONID 703 * set in the environment. If so, use it as the slot 704 */ 705 if ((sessionid = getenv("SESSIONID")) != NULL) { 706 char *end; 707 u_long slot; 708 709 slot = strtoul(sessionid, &end, 16); 710 dev->slot = end != sessionid && *end == '\0' ? slot : 0; 711 } else 712 dev->slot = 0; 713 } 714 } 715 } 716 717 if (dev) { 718 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 719 return &dev->dev; 720 } 721 722 return NULL; 723 } 724