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 * $FreeBSD$ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/socket.h> 31 #include <sys/un.h> 32 #include <netinet/in.h> 33 #include <arpa/inet.h> 34 #include <netdb.h> 35 #include <netgraph.h> 36 #include <net/ethernet.h> 37 #include <net/if.h> 38 #include <net/route.h> 39 #include <netinet/in_systm.h> 40 #include <netinet/ip.h> 41 #include <netgraph/ng_ether.h> 42 #include <netgraph/ng_message.h> 43 #include <netgraph/ng_pppoe.h> 44 #include <netgraph/ng_socket.h> 45 46 #include <errno.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <sysexits.h> 51 #include <sys/fcntl.h> 52 #if defined(__FreeBSD__) && !defined(NOKLDLOAD) 53 #include <sys/linker.h> 54 #include <sys/module.h> 55 #endif 56 #include <sys/stat.h> 57 #include <sys/uio.h> 58 #include <termios.h> 59 #include <sys/time.h> 60 #include <unistd.h> 61 62 #include "layer.h" 63 #include "defs.h" 64 #include "mbuf.h" 65 #include "log.h" 66 #include "timer.h" 67 #include "lqr.h" 68 #include "hdlc.h" 69 #include "throughput.h" 70 #include "fsm.h" 71 #include "lcp.h" 72 #include "ccp.h" 73 #include "link.h" 74 #include "async.h" 75 #include "descriptor.h" 76 #include "physical.h" 77 #include "main.h" 78 #include "mp.h" 79 #include "chat.h" 80 #include "auth.h" 81 #include "chap.h" 82 #include "cbcp.h" 83 #include "datalink.h" 84 #include "slcompress.h" 85 #include "iplist.h" 86 #include "ncpaddr.h" 87 #include "ip.h" 88 #include "ipcp.h" 89 #include "filter.h" 90 #ifndef NORADIUS 91 #include "radius.h" 92 #endif 93 #include "ipv6cp.h" 94 #include "ncp.h" 95 #include "bundle.h" 96 #include "id.h" 97 #include "iface.h" 98 #include "ether.h" 99 100 101 #define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 102 103 struct etherdevice { 104 struct device dev; /* What struct physical knows about */ 105 int cs; /* Control socket */ 106 int connected; /* Are we connected yet ? */ 107 int timeout; /* Seconds attempting to connect */ 108 char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 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 void 185 ether_device2iov(struct device *d, struct iovec *iov, int *niov, 186 int maxiov, int *auxfd, int *nauxfd) 187 { 188 struct etherdevice *dev = device2ether(d); 189 int sz = physical_MaxDeviceSize(); 190 191 iov[*niov].iov_base = realloc(d, sz); 192 if (iov[*niov].iov_base == NULL) { 193 log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 194 AbortProgram(EX_OSERR); 195 } 196 iov[*niov].iov_len = sz; 197 (*niov)++; 198 199 if (dev->cs >= 0) { 200 *auxfd = dev->cs; 201 (*nauxfd)++; 202 } 203 } 204 205 static void 206 ether_MessageIn(struct etherdevice *dev) 207 { 208 char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 209 struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 210 struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 211 char unknown[14]; 212 const char *msg; 213 struct timeval t; 214 fd_set *r; 215 int ret; 216 217 if (dev->cs < 0) 218 return; 219 220 if ((r = mkfdset()) == NULL) { 221 log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 222 return; 223 } 224 zerofdset(r); 225 FD_SET(dev->cs, r); 226 t.tv_sec = t.tv_usec = 0; 227 ret = select(dev->cs + 1, r, NULL, NULL, &t); 228 free(r); 229 230 if (ret <= 0) 231 return; 232 233 if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0) 234 return; 235 236 if (rep->header.version != NG_VERSION) { 237 log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 238 (long)rep->header.version, (long)NG_VERSION); 239 return; 240 } 241 242 if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 243 log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 244 (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 245 return; 246 } 247 248 switch (rep->header.cmd) { 249 case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 250 case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 251 case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 252 case NGM_PPPOE_OFFER: msg = "OFFER"; break; 253 case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 254 case NGM_PPPOE_FAIL: msg = "FAIL"; break; 255 case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 256 case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 257 case NGM_PPPOE_ACNAME: 258 msg = "ACNAME"; 259 if (setenv("ACNAME", sts->hook, 1) != 0) 260 log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook); 261 break; 262 default: 263 snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 264 msg = unknown; 265 break; 266 } 267 268 log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%s\")\n", msg, sts->hook); 269 270 switch (rep->header.cmd) { 271 case NGM_PPPOE_SUCCESS: 272 dev->connected = CARRIER_OK; 273 break; 274 case NGM_PPPOE_FAIL: 275 case NGM_PPPOE_CLOSE: 276 dev->connected = CARRIER_LOST; 277 break; 278 } 279 } 280 281 static int 282 ether_AwaitCarrier(struct physical *p) 283 { 284 struct etherdevice *dev = device2ether(p->handler); 285 286 if (dev->connected != CARRIER_OK && !dev->timeout--) 287 dev->connected = CARRIER_LOST; 288 else if (dev->connected == CARRIER_PENDING) 289 ether_MessageIn(dev); 290 291 return dev->connected; 292 } 293 294 static const struct device baseetherdevice = { 295 ETHER_DEVICE, 296 "ether", 297 1492, 298 { CD_REQUIRED, DEF_ETHERCDDELAY }, 299 ether_AwaitCarrier, 300 ether_RemoveFromSet, 301 NULL, 302 NULL, 303 NULL, 304 NULL, 305 ether_Free, 306 ether_Read, 307 ether_Write, 308 ether_device2iov, 309 NULL, 310 ether_OpenInfo 311 }; 312 313 struct device * 314 ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 315 int maxiov, int *auxfd, int *nauxfd) 316 { 317 if (type == ETHER_DEVICE) { 318 struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 319 320 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 321 if (dev == NULL) { 322 log_Printf(LogALERT, "Failed to allocate memory: %d\n", 323 (int)(sizeof *dev)); 324 AbortProgram(EX_OSERR); 325 } 326 327 if (*nauxfd) { 328 dev->cs = *auxfd; 329 (*nauxfd)--; 330 } else 331 dev->cs = -1; 332 333 /* Refresh function pointers etc */ 334 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 335 336 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 337 return &dev->dev; 338 } 339 340 return NULL; 341 } 342 343 static int 344 ether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 345 { 346 struct physical *p = descriptor2physical(d); 347 struct etherdevice *dev = device2ether(p->handler); 348 int result; 349 350 if (r && dev->cs >= 0) { 351 FD_SET(dev->cs, r); 352 log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 353 result = 1; 354 } else 355 result = 0; 356 357 result += physical_doUpdateSet(d, r, w, e, n, 0); 358 359 return result; 360 } 361 362 static int 363 ether_IsSet(struct fdescriptor *d, const fd_set *fdset) 364 { 365 struct physical *p = descriptor2physical(d); 366 struct etherdevice *dev = device2ether(p->handler); 367 int result; 368 369 result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 370 result += physical_IsSet(d, fdset); 371 372 return result; 373 } 374 375 static void 376 ether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 377 const fd_set *fdset) 378 { 379 struct physical *p = descriptor2physical(d); 380 struct etherdevice *dev = device2ether(p->handler); 381 382 if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 383 ether_MessageIn(dev); 384 if (dev->connected == CARRIER_LOST) { 385 log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 386 datalink_Down(p->dl, CLOSE_NORMAL); 387 return; 388 } 389 } 390 391 if (physical_IsSet(d, fdset)) 392 physical_DescriptorRead(d, bundle, fdset); 393 } 394 395 static struct device * 396 ether_Abandon(struct etherdevice *dev, struct physical *p) 397 { 398 /* Abandon our node construction */ 399 close(dev->cs); 400 close(p->fd); 401 p->fd = -2; /* Nobody else need try.. */ 402 free(dev); 403 404 return NULL; 405 } 406 407 struct device * 408 ether_Create(struct physical *p) 409 { 410 u_char rbuf[2048]; 411 struct etherdevice *dev; 412 struct ng_mesg *resp; 413 const struct hooklist *hlist; 414 const struct nodeinfo *ninfo; 415 char *path; 416 int ifacelen, f; 417 418 dev = NULL; 419 path = NULL; 420 ifacelen = 0; 421 if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 422 PPPOE_NODE_TYPE_LEN) && 423 p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 424 const struct linkinfo *nlink; 425 struct ngpppoe_init_data *data; 426 struct ngm_mkpeer mkp; 427 struct ngm_connect ngc; 428 const char *iface, *provider; 429 char etherid[12]; 430 int providerlen; 431 char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 432 433 p->fd--; /* We own the device - change fd */ 434 435 #if defined(__FreeBSD__) && !defined(NOKLDLOAD) 436 if (modfind("netgraph") == -1 && ID0kldload("netgraph") == -1) { 437 log_Printf(LogWARN, "kldload: netgraph: %s\n", strerror(errno)); 438 return NULL; 439 } 440 441 if (modfind("ng_ether") == -1 && ID0kldload("ng_ether") == -1) 442 /* 443 * Don't treat this as an error as older kernels have this stuff 444 * built in as part of the netgraph node itself. 445 */ 446 log_Printf(LogWARN, "kldload: ng_ether: %s\n", strerror(errno)); 447 448 if (modfind("ng_pppoe") == -1 && ID0kldload("ng_pppoe") == -1) { 449 log_Printf(LogWARN, "kldload: ng_pppoe: %s\n", strerror(errno)); 450 return NULL; 451 } 452 453 if (modfind("ng_socket") == -1 && ID0kldload("ng_socket") == -1) { 454 log_Printf(LogWARN, "kldload: ng_socket: %s\n", strerror(errno)); 455 return NULL; 456 } 457 #endif 458 459 if ((dev = malloc(sizeof *dev)) == NULL) 460 return NULL; 461 462 iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 463 464 provider = strchr(iface, ':'); 465 if (provider) { 466 ifacelen = provider - iface; 467 provider++; 468 providerlen = strlen(provider); 469 } else { 470 ifacelen = strlen(iface); 471 provider = ""; 472 providerlen = 0; 473 } 474 475 /* 476 * We're going to do this (where tunN is our tunnel device): 477 * 478 * .---------. 479 * | ether | 480 * | <iface> | dev->cs 481 * `---------' | 482 * (orphan) p->fd | 483 * | | | 484 * | | | 485 * (ethernet) | | 486 * .---------. .-----------. 487 * | pppoe | | socket | 488 * | <iface> |(tunN)<---->(tunN)| <unnamed> | 489 * `--------- `-----------' 490 * (tunX) 491 * ^ 492 * | 493 * `--->(tunX) 494 */ 495 496 /* Create a socket node */ 497 if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 498 log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 499 strerror(errno)); 500 free(dev); 501 return NULL; 502 } 503 504 /* 505 * Ask for a list of hooks attached to the "ether" node. This node should 506 * magically exist as a way of hooking stuff onto an ethernet device 507 */ 508 path = (char *)alloca(ifacelen + 2); 509 sprintf(path, "%.*s:", ifacelen, iface); 510 if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 511 NULL, 0) < 0) { 512 log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 513 path, strerror(errno)); 514 return ether_Abandon(dev, p); 515 } 516 517 /* Get our list back */ 518 resp = (struct ng_mesg *)rbuf; 519 if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) <= 0) { 520 log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 521 strerror(errno)); 522 return ether_Abandon(dev, p); 523 } 524 525 hlist = (const struct hooklist *)resp->data; 526 ninfo = &hlist->nodeinfo; 527 528 /* Make sure we've got the right type of node */ 529 if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 530 sizeof NG_ETHER_NODE_TYPE - 1)) { 531 log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 532 NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 533 return ether_Abandon(dev, p); 534 } 535 536 log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 537 path, ninfo->id); 538 539 /* look for a hook already attached. */ 540 for (f = 0; f < ninfo->hooks; f++) { 541 nlink = &hlist->link[f]; 542 543 log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 544 nlink->peerhook); 545 546 if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 547 !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 548 /* 549 * Something is using the data coming out of this ``ether'' node. 550 * If it's a PPPoE node, we use that node, otherwise we complain that 551 * someone else is using the node. 552 */ 553 if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 554 /* Use this PPPoE node ! */ 555 snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 556 else { 557 log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 558 path, nlink->nodeinfo.type); 559 return ether_Abandon(dev, p); 560 } 561 break; 562 } 563 } 564 565 if (f == ninfo->hooks) { 566 /* 567 * Create a new ``PPPoE'' node connected to the ``ether'' node using 568 * the magic ``orphan'' and ``ethernet'' hooks 569 */ 570 snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 571 snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 572 snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 573 snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 574 575 log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 576 etherid, mkp.ourhook, mkp.peerhook); 577 578 if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 579 NGM_MKPEER, &mkp, sizeof mkp) < 0) { 580 log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 581 etherid, strerror(errno)); 582 return ether_Abandon(dev, p); 583 } 584 585 snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 586 } 587 588 snprintf(dev->hook, sizeof dev->hook, "%s%d", 589 TUN_NAME, p->dl->bundle->unit); 590 591 /* 592 * Connect the PPPoE node to our socket node. 593 * ngc.path has already been set up 594 */ 595 snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 596 memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 597 598 log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 599 ngc.ourhook, ngc.path, ngc.peerhook); 600 if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 601 NGM_CONNECT, &ngc, sizeof ngc) < 0) { 602 log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 603 "nodes: %s\n", strerror(errno)); 604 return ether_Abandon(dev, p); 605 } 606 607 /* Bring the Ethernet interface up */ 608 path[ifacelen] = '\0'; /* Remove the trailing ':' */ 609 if (!iface_SetFlags(path, IFF_UP)) 610 log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n", 611 p->link.name, path); 612 613 /* And finally, request a connection to the given provider */ 614 615 data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 616 snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 617 memcpy(data->data, provider, providerlen); 618 data->data_len = providerlen; 619 620 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 621 log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 622 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 623 NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 624 log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 625 connectpath, strerror(errno)); 626 return ether_Abandon(dev, p); 627 } 628 629 /* Hook things up so that we monitor dev->cs */ 630 p->desc.UpdateSet = ether_UpdateSet; 631 p->desc.IsSet = ether_IsSet; 632 p->desc.Read = ether_DescriptorRead; 633 634 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 635 switch (p->cfg.cd.necessity) { 636 case CD_VARIABLE: 637 dev->dev.cd.delay = p->cfg.cd.delay; 638 break; 639 case CD_REQUIRED: 640 dev->dev.cd = p->cfg.cd; 641 break; 642 case CD_NOTREQUIRED: 643 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 644 p->link.name, dev->dev.cd.delay); 645 case CD_DEFAULT: 646 break; 647 } 648 649 dev->timeout = dev->dev.cd.delay; 650 dev->connected = CARRIER_PENDING; 651 652 } else { 653 /* See if we're a netgraph socket */ 654 struct stat st; 655 656 if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { 657 struct sockaddr_storage ssock; 658 struct sockaddr *sock = (struct sockaddr *)&ssock; 659 int sz; 660 661 sz = sizeof ssock; 662 if (getsockname(p->fd, sock, &sz) == -1) { 663 log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); 664 close(p->fd); 665 p->fd = -1; 666 return NULL; 667 } 668 669 if (sock->sa_family == AF_NETGRAPH) { 670 /* 671 * It's a netgraph node... We can't determine hook names etc, so we 672 * stay pretty impartial.... 673 */ 674 log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 675 676 if ((dev = malloc(sizeof *dev)) == NULL) { 677 log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 678 p->link.name, strerror(errno)); 679 return NULL; 680 } 681 682 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 683 dev->cs = -1; 684 dev->timeout = 0; 685 dev->connected = CARRIER_OK; 686 *dev->hook = '\0'; 687 } 688 } 689 } 690 691 if (dev) { 692 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 693 return &dev->dev; 694 } 695 696 return NULL; 697 } 698