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 #include <sys/stat.h> 53 #include <sys/uio.h> 54 #include <termios.h> 55 #include <sys/time.h> 56 #include <syslog.h> 57 #include <unistd.h> 58 59 #include "layer.h" 60 #include "defs.h" 61 #include "mbuf.h" 62 #include "log.h" 63 #include "timer.h" 64 #include "lqr.h" 65 #include "hdlc.h" 66 #include "throughput.h" 67 #include "fsm.h" 68 #include "lcp.h" 69 #include "ccp.h" 70 #include "link.h" 71 #include "async.h" 72 #include "descriptor.h" 73 #include "physical.h" 74 #include "main.h" 75 #include "mp.h" 76 #include "chat.h" 77 #include "auth.h" 78 #include "chap.h" 79 #include "cbcp.h" 80 #include "datalink.h" 81 #include "slcompress.h" 82 #include "iplist.h" 83 #include "ncpaddr.h" 84 #include "ip.h" 85 #include "ipcp.h" 86 #include "filter.h" 87 #ifndef NORADIUS 88 #include "radius.h" 89 #endif 90 #include "ipv6cp.h" 91 #include "ncp.h" 92 #include "bundle.h" 93 #include "id.h" 94 #include "iface.h" 95 #include "route.h" 96 #include "ether.h" 97 98 99 #define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 100 101 struct etherdevice { 102 struct device dev; /* What struct physical knows about */ 103 int cs; /* Control socket */ 104 int connected; /* Are we connected yet ? */ 105 int timeout; /* Seconds attempting to connect */ 106 char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 107 u_int32_t slot; /* ifindex << 24 | unit */ 108 }; 109 110 #define device2ether(d) \ 111 ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL) 112 113 unsigned 114 ether_DeviceSize(void) 115 { 116 return sizeof(struct etherdevice); 117 } 118 119 static ssize_t 120 ether_Write(struct physical *p, const void *v, size_t n) 121 { 122 struct etherdevice *dev = device2ether(p->handler); 123 124 return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : (ssize_t)n; 125 } 126 127 static ssize_t 128 ether_Read(struct physical *p, void *v, size_t n) 129 { 130 char hook[sizeof TUN_NAME + 11]; 131 132 return NgRecvData(p->fd, v, n, hook); 133 } 134 135 static int 136 ether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 137 { 138 struct etherdevice *dev = device2ether(p->handler); 139 int result; 140 141 if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) { 142 FD_CLR(dev->cs, r); 143 log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs); 144 result = 1; 145 } else 146 result = 0; 147 148 /* Careful... physical_RemoveFromSet() called us ! */ 149 150 p->handler->removefromset = NULL; 151 result += physical_RemoveFromSet(p, r, w, e); 152 p->handler->removefromset = ether_RemoveFromSet; 153 154 return result; 155 } 156 157 static void 158 ether_Free(struct physical *p) 159 { 160 struct etherdevice *dev = device2ether(p->handler); 161 162 physical_SetDescriptor(p); 163 if (dev->cs != -1) 164 close(dev->cs); 165 free(dev); 166 } 167 168 static const char * 169 ether_OpenInfo(struct physical *p) 170 { 171 struct etherdevice *dev = device2ether(p->handler); 172 173 switch (dev->connected) { 174 case CARRIER_PENDING: 175 return "negotiating"; 176 case CARRIER_OK: 177 return "established"; 178 } 179 180 return "disconnected"; 181 } 182 183 static int 184 ether_Slot(struct physical *p) 185 { 186 struct etherdevice *dev = device2ether(p->handler); 187 188 return dev->slot; 189 } 190 191 192 static void 193 ether_device2iov(struct device *d, struct iovec *iov, int *niov, 194 int maxiov __unused, int *auxfd, int *nauxfd) 195 { 196 struct etherdevice *dev = device2ether(d); 197 int sz = physical_MaxDeviceSize(); 198 199 iov[*niov].iov_base = realloc(d, sz); 200 if (iov[*niov].iov_base == NULL) { 201 log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 202 AbortProgram(EX_OSERR); 203 } 204 iov[*niov].iov_len = sz; 205 (*niov)++; 206 207 if (dev->cs >= 0) { 208 *auxfd = dev->cs; 209 (*nauxfd)++; 210 } 211 } 212 213 static void 214 ether_MessageIn(struct etherdevice *dev) 215 { 216 char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 217 struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 218 struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 219 char *end, unknown[14], sessionid[5]; 220 const char *msg; 221 struct timeval t; 222 fd_set *r; 223 u_long slot; 224 int asciilen, ret; 225 226 if (dev->cs < 0) 227 return; 228 229 if ((r = mkfdset()) == NULL) { 230 log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 231 return; 232 } 233 234 while (1) { 235 zerofdset(r); 236 FD_SET(dev->cs, r); 237 t.tv_sec = t.tv_usec = 0; 238 ret = select(dev->cs + 1, r, NULL, NULL, &t); 239 240 if (ret <= 0) 241 break; 242 243 if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0) 244 break; 245 246 if (rep->header.version != NG_VERSION) { 247 log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 248 (long)rep->header.version, (long)NG_VERSION); 249 break; 250 } 251 252 if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 253 log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 254 (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 255 break; 256 } 257 258 asciilen = 0; 259 switch (rep->header.cmd) { 260 case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 261 case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 262 case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 263 case NGM_PPPOE_OFFER: msg = "OFFER"; break; 264 case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 265 case NGM_PPPOE_FAIL: msg = "FAIL"; break; 266 case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 267 case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 268 case NGM_PPPOE_ACNAME: 269 msg = "ACNAME"; 270 if (setenv("ACNAME", sts->hook, 1) != 0) 271 log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook); 272 asciilen = rep->header.arglen; 273 break; 274 case NGM_PPPOE_SESSIONID: 275 msg = "SESSIONID"; 276 snprintf(sessionid, sizeof sessionid, "%04x", *(u_int16_t *)sts); 277 if (setenv("SESSIONID", sessionid, 1) != 0) 278 syslog(LOG_WARNING, "setenv: cannot set SESSIONID=%s: %m", 279 sessionid); 280 /* Use this in preference to our interface index */ 281 slot = strtoul(sessionid, &end, 16); 282 if (end != sessionid && *end == '\0') 283 dev->slot = slot; 284 break; 285 default: 286 snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 287 msg = unknown; 288 break; 289 } 290 291 if (asciilen) 292 log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%.*s\")\n", 293 msg, asciilen, sts->hook); 294 else 295 log_Printf(LogPHASE, "Received NGM_PPPOE_%s\n", msg); 296 297 switch (rep->header.cmd) { 298 case NGM_PPPOE_SUCCESS: 299 dev->connected = CARRIER_OK; 300 break; 301 case NGM_PPPOE_FAIL: 302 case NGM_PPPOE_CLOSE: 303 dev->connected = CARRIER_LOST; 304 break; 305 } 306 } 307 free(r); 308 } 309 310 static int 311 ether_AwaitCarrier(struct physical *p) 312 { 313 struct etherdevice *dev = device2ether(p->handler); 314 315 if (dev->connected != CARRIER_OK && !dev->timeout--) 316 dev->connected = CARRIER_LOST; 317 else if (dev->connected == CARRIER_PENDING) 318 ether_MessageIn(dev); 319 320 return dev->connected; 321 } 322 323 static const struct device baseetherdevice = { 324 ETHER_DEVICE, 325 "ether", 326 1492, 327 { CD_REQUIRED, DEF_ETHERCDDELAY }, 328 ether_AwaitCarrier, 329 ether_RemoveFromSet, 330 NULL, 331 NULL, 332 NULL, 333 NULL, 334 NULL, 335 ether_Free, 336 ether_Read, 337 ether_Write, 338 ether_device2iov, 339 NULL, 340 ether_OpenInfo, 341 ether_Slot 342 }; 343 344 struct device * 345 ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 346 int maxiov __unused, int *auxfd, int *nauxfd) 347 { 348 if (type == ETHER_DEVICE) { 349 struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 350 351 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 352 if (dev == NULL) { 353 log_Printf(LogALERT, "Failed to allocate memory: %d\n", 354 (int)(sizeof *dev)); 355 AbortProgram(EX_OSERR); 356 } 357 358 if (*nauxfd) { 359 dev->cs = *auxfd; 360 (*nauxfd)--; 361 } else 362 dev->cs = -1; 363 364 /* Refresh function pointers etc */ 365 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 366 367 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 368 return &dev->dev; 369 } 370 371 return NULL; 372 } 373 374 static int 375 ether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 376 { 377 struct physical *p = descriptor2physical(d); 378 struct etherdevice *dev = device2ether(p->handler); 379 int result; 380 381 if (r && dev->cs >= 0) { 382 FD_SET(dev->cs, r); 383 log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 384 result = 1; 385 } else 386 result = 0; 387 388 result += physical_doUpdateSet(d, r, w, e, n, 0); 389 390 return result; 391 } 392 393 static int 394 ether_IsSet(struct fdescriptor *d, const fd_set *fdset) 395 { 396 struct physical *p = descriptor2physical(d); 397 struct etherdevice *dev = device2ether(p->handler); 398 int result; 399 400 result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 401 result += physical_IsSet(d, fdset); 402 403 return result; 404 } 405 406 static void 407 ether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 408 const fd_set *fdset) 409 { 410 struct physical *p = descriptor2physical(d); 411 struct etherdevice *dev = device2ether(p->handler); 412 413 if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 414 ether_MessageIn(dev); 415 if (dev->connected == CARRIER_LOST) { 416 log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 417 datalink_Down(p->dl, CLOSE_NORMAL); 418 return; 419 } 420 } 421 422 if (physical_IsSet(d, fdset)) 423 physical_DescriptorRead(d, bundle, fdset); 424 } 425 426 static struct device * 427 ether_Abandon(struct etherdevice *dev, struct physical *p) 428 { 429 /* Abandon our node construction */ 430 close(dev->cs); 431 close(p->fd); 432 p->fd = -2; /* Nobody else need try.. */ 433 free(dev); 434 435 return NULL; 436 } 437 438 struct device * 439 ether_Create(struct physical *p) 440 { 441 u_char rbuf[2048]; 442 struct etherdevice *dev; 443 struct ng_mesg *resp; 444 const struct hooklist *hlist; 445 const struct nodeinfo *ninfo; 446 char *path, *sessionid; 447 const char *mode; 448 size_t ifacelen; 449 unsigned f; 450 451 dev = NULL; 452 path = NULL; 453 ifacelen = 0; 454 if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 455 PPPOE_NODE_TYPE_LEN) && 456 p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 457 const struct linkinfo *nlink; 458 struct ngpppoe_init_data *data; 459 struct ngm_mkpeer mkp; 460 struct ngm_connect ngc; 461 const char *iface, *provider; 462 char etherid[12]; 463 int providerlen; 464 char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 465 466 p->fd--; /* We own the device - change fd */ 467 468 loadmodules(LOAD_VERBOSLY, "netgraph", "ng_ether", "ng_pppoe", "ng_socket", 469 NULL); 470 471 if ((dev = malloc(sizeof *dev)) == NULL) 472 return NULL; 473 474 iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 475 476 provider = strchr(iface, ':'); 477 if (provider) { 478 ifacelen = provider - iface; 479 provider++; 480 providerlen = strlen(provider); 481 } else { 482 ifacelen = strlen(iface); 483 provider = ""; 484 providerlen = 0; 485 } 486 487 /* 488 * We're going to do this (where tunN is our tunnel device): 489 * 490 * .---------. 491 * | ether | 492 * | <iface> | dev->cs 493 * `---------' | 494 * (orphan) p->fd | 495 * | | | 496 * | | | 497 * (ethernet) | | 498 * .---------. .-----------. 499 * | pppoe | | socket | 500 * | <iface> |(tunN)<---->(tunN)| <unnamed> | 501 * `--------- `-----------' 502 * (tunX) 503 * ^ 504 * | 505 * `--->(tunX) 506 */ 507 508 /* Create a socket node */ 509 if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 510 log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 511 strerror(errno)); 512 free(dev); 513 p->fd = -2; 514 return NULL; 515 } 516 517 /* 518 * Ask for a list of hooks attached to the "ether" node. This node should 519 * magically exist as a way of hooking stuff onto an ethernet device 520 */ 521 path = (char *)alloca(ifacelen + 2); 522 sprintf(path, "%.*s:", (int)ifacelen, iface); 523 if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 524 NULL, 0) < 0) { 525 log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 526 path, strerror(errno)); 527 return ether_Abandon(dev, p); 528 } 529 530 /* Get our list back */ 531 resp = (struct ng_mesg *)rbuf; 532 if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) <= 0) { 533 log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 534 strerror(errno)); 535 return ether_Abandon(dev, p); 536 } 537 538 hlist = (const struct hooklist *)resp->data; 539 ninfo = &hlist->nodeinfo; 540 541 /* Make sure we've got the right type of node */ 542 if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 543 sizeof NG_ETHER_NODE_TYPE - 1)) { 544 log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 545 NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 546 return ether_Abandon(dev, p); 547 } 548 549 log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 550 path, ninfo->id); 551 552 /* look for a hook already attached. */ 553 for (f = 0; f < ninfo->hooks; f++) { 554 nlink = &hlist->link[f]; 555 556 log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 557 nlink->peerhook); 558 559 if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 560 !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 561 /* 562 * Something is using the data coming out of this ``ether'' node. 563 * If it's a PPPoE node, we use that node, otherwise we complain that 564 * someone else is using the node. 565 */ 566 if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 567 /* Use this PPPoE node ! */ 568 snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 569 else { 570 log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 571 path, nlink->nodeinfo.type); 572 return ether_Abandon(dev, p); 573 } 574 break; 575 } 576 } 577 578 if (f == ninfo->hooks) { 579 /* 580 * Create a new ``PPPoE'' node connected to the ``ether'' node using 581 * the ``orphan'' and ``ethernet'' hooks 582 */ 583 snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 584 snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 585 snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 586 snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 587 588 log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 589 etherid, mkp.ourhook, mkp.peerhook); 590 591 if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 592 NGM_MKPEER, &mkp, sizeof mkp) < 0) { 593 log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 594 etherid, strerror(errno)); 595 return ether_Abandon(dev, p); 596 } 597 598 snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 599 } 600 601 snprintf(dev->hook, sizeof dev->hook, "%s%d", 602 TUN_NAME, p->dl->bundle->unit); 603 604 /* 605 * Connect the PPPoE node to our socket node. 606 * ngc.path has already been set up 607 */ 608 snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 609 memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 610 611 log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 612 ngc.ourhook, ngc.path, ngc.peerhook); 613 if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 614 NGM_CONNECT, &ngc, sizeof ngc) < 0) { 615 log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 616 "nodes: %s\n", strerror(errno)); 617 return ether_Abandon(dev, p); 618 } 619 620 /* Bring the Ethernet interface up */ 621 path[ifacelen] = '\0'; /* Remove the trailing ':' */ 622 if (!iface_SetFlags(path, IFF_UP)) 623 log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n", 624 p->link.name, path); 625 626 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 627 628 /* Configure node to 3Com mode if needed */ 629 if (p->cfg.pppoe_configured) { 630 mode = p->cfg.nonstandard_pppoe ? NG_PPPOE_NONSTANDARD : NG_PPPOE_STANDARD; 631 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 632 NGM_PPPOE_SETMODE, mode, strlen(mode) + 1) == -1) { 633 log_Printf(LogWARN, "``%s'': Cannot configure netgraph node: %s\n", 634 connectpath, strerror(errno)); 635 return ether_Abandon(dev, p); 636 } 637 } 638 639 /* And finally, request a connection to the given provider */ 640 641 data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 642 snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 643 memcpy(data->data, provider, providerlen); 644 data->data_len = providerlen; 645 646 log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 647 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 648 NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 649 log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 650 connectpath, strerror(errno)); 651 return ether_Abandon(dev, p); 652 } 653 654 /* Hook things up so that we monitor dev->cs */ 655 p->desc.UpdateSet = ether_UpdateSet; 656 p->desc.IsSet = ether_IsSet; 657 p->desc.Read = ether_DescriptorRead; 658 659 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 660 switch (p->cfg.cd.necessity) { 661 case CD_VARIABLE: 662 dev->dev.cd.delay = p->cfg.cd.delay; 663 break; 664 case CD_REQUIRED: 665 dev->dev.cd = p->cfg.cd; 666 break; 667 case CD_NOTREQUIRED: 668 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 669 p->link.name, dev->dev.cd.delay); 670 case CD_DEFAULT: 671 break; 672 } 673 674 dev->timeout = dev->dev.cd.delay; 675 dev->connected = CARRIER_PENDING; 676 /* This will be overridden by our session id - if provided by netgraph */ 677 dev->slot = GetIfIndex(path); 678 } else { 679 /* See if we're a netgraph socket */ 680 struct stat st; 681 682 if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { 683 struct sockaddr_storage ssock; 684 struct sockaddr *sock = (struct sockaddr *)&ssock; 685 int sz; 686 687 sz = sizeof ssock; 688 if (getsockname(p->fd, sock, &sz) == -1) { 689 log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); 690 close(p->fd); 691 p->fd = -1; 692 return NULL; 693 } 694 695 if (sock->sa_family == AF_NETGRAPH) { 696 /* 697 * It's a netgraph node... We can't determine hook names etc, so we 698 * stay pretty impartial.... 699 */ 700 log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 701 702 if ((dev = malloc(sizeof *dev)) == NULL) { 703 log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 704 p->link.name, strerror(errno)); 705 return NULL; 706 } 707 708 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 709 dev->cs = -1; 710 dev->timeout = 0; 711 dev->connected = CARRIER_OK; 712 *dev->hook = '\0'; 713 714 /* 715 * If we're being envoked from pppoed(8), we may have a SESSIONID 716 * set in the environment. If so, use it as the slot 717 */ 718 if ((sessionid = getenv("SESSIONID")) != NULL) { 719 char *end; 720 u_long slot; 721 722 slot = strtoul(sessionid, &end, 16); 723 dev->slot = end != sessionid && *end == '\0' ? slot : 0; 724 } else 725 dev->slot = 0; 726 } 727 } 728 } 729 730 if (dev) { 731 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 732 return &dev->dev; 733 } 734 735 return NULL; 736 } 737