ether.c revision 68846
1184610Salfred/*- 2189001Sed * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org> 3184610Salfred * All rights reserved. 4184610Salfred * 5189001Sed * Redistribution and use in source and binary forms, with or without 6184610Salfred * modification, are permitted provided that the following conditions 7184610Salfred * are met: 8184610Salfred * 1. Redistributions of source code must retain the above copyright 9184610Salfred * notice, this list of conditions and the following disclaimer. 10184610Salfred * 2. Redistributions in binary form must reproduce the above copyright 11184610Salfred * notice, this list of conditions and the following disclaimer in the 12184610Salfred * documentation and/or other materials provided with the distribution. 13184610Salfred * 14184610Salfred * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15184610Salfred * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16184610Salfred * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17184610Salfred * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18184610Salfred * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19184610Salfred * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20184610Salfred * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21184610Salfred * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22184610Salfred * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23184610Salfred * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24184610Salfred * SUCH DAMAGE. 25184610Salfred * 26184610Salfred * $FreeBSD: head/usr.sbin/ppp/ether.c 68846 2000-11-16 23:15:42Z brian $ 27184610Salfred */ 28184610Salfred 29184610Salfred#include <sys/param.h> 30184610Salfred#include <sys/socket.h> 31184610Salfred#include <sys/un.h> 32184610Salfred#include <netinet/in.h> 33184610Salfred#include <arpa/inet.h> 34184610Salfred#include <netdb.h> 35184610Salfred#include <netgraph.h> 36184610Salfred#include <net/ethernet.h> 37184610Salfred#include <netinet/in_systm.h> 38184610Salfred#include <netinet/ip.h> 39184610Salfred#include <netgraph/ng_ether.h> 40184610Salfred#include <netgraph/ng_message.h> 41184610Salfred#include <netgraph/ng_pppoe.h> 42184610Salfred#include <netgraph/ng_socket.h> 43184610Salfred 44184610Salfred#include <errno.h> 45184610Salfred#include <stdio.h> 46184610Salfred#include <stdlib.h> 47184610Salfred#include <string.h> 48184610Salfred#include <sysexits.h> 49184610Salfred#include <sys/fcntl.h> 50184610Salfred#if defined(__FreeBSD__) && !defined(NOKLDLOAD) 51184610Salfred#include <sys/linker.h> 52184610Salfred#include <sys/module.h> 53184610Salfred#endif 54184610Salfred#include <sys/uio.h> 55184610Salfred#include <termios.h> 56184610Salfred#include <sys/time.h> 57184610Salfred#include <unistd.h> 58184610Salfred 59184610Salfred#include "layer.h" 60184610Salfred#include "defs.h" 61184610Salfred#include "mbuf.h" 62184610Salfred#include "log.h" 63184610Salfred#include "timer.h" 64184610Salfred#include "lqr.h" 65184610Salfred#include "hdlc.h" 66184610Salfred#include "throughput.h" 67184610Salfred#include "fsm.h" 68184610Salfred#include "lcp.h" 69184610Salfred#include "ccp.h" 70184610Salfred#include "link.h" 71184610Salfred#include "async.h" 72184610Salfred#include "descriptor.h" 73184610Salfred#include "physical.h" 74184610Salfred#include "main.h" 75184610Salfred#include "mp.h" 76184610Salfred#include "chat.h" 77184610Salfred#include "auth.h" 78184610Salfred#include "chap.h" 79184610Salfred#include "cbcp.h" 80184610Salfred#include "datalink.h" 81184610Salfred#include "slcompress.h" 82184610Salfred#include "iplist.h" 83184610Salfred#include "ipcp.h" 84184610Salfred#include "filter.h" 85184610Salfred#ifndef NORADIUS 86184610Salfred#include "radius.h" 87184610Salfred#endif 88184610Salfred#include "bundle.h" 89184610Salfred#include "id.h" 90184610Salfred#include "ether.h" 91184610Salfred 92184610Salfred 93184610Salfred#define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 94184610Salfred 95184610Salfredstruct etherdevice { 96184610Salfred struct device dev; /* What struct physical knows about */ 97184610Salfred int cs; /* Control socket */ 98184610Salfred int connected; /* Are we connected yet ? */ 99184610Salfred int timeout; /* Seconds attempting to connect */ 100184610Salfred char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 101184610Salfred}; 102184610Salfred 103184610Salfred#define device2ether(d) \ 104184610Salfred ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL) 105184610Salfred 106184610Salfredint 107184610Salfredether_DeviceSize(void) 108184610Salfred{ 109184610Salfred return sizeof(struct etherdevice); 110184610Salfred} 111184610Salfred 112184610Salfredstatic ssize_t 113184610Salfredether_Write(struct physical *p, const void *v, size_t n) 114184610Salfred{ 115184610Salfred struct etherdevice *dev = device2ether(p->handler); 116184610Salfred 117184610Salfred return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : n; 118184610Salfred} 119184610Salfred 120184610Salfredstatic ssize_t 121184610Salfredether_Read(struct physical *p, void *v, size_t n) 122184610Salfred{ 123184610Salfred char hook[sizeof TUN_NAME + 11]; 124184610Salfred 125184610Salfred return NgRecvData(p->fd, v, n, hook); 126184610Salfred} 127184610Salfred 128184610Salfredstatic int 129184610Salfredether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 130184610Salfred{ 131184610Salfred struct etherdevice *dev = device2ether(p->handler); 132184610Salfred int result; 133184610Salfred 134184610Salfred if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) { 135184610Salfred FD_CLR(dev->cs, r); 136184610Salfred log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs); 137184610Salfred result = 1; 138184610Salfred } else 139184610Salfred result = 0; 140184610Salfred 141184610Salfred /* Careful... physical_RemoveFromSet() called us ! */ 142184610Salfred 143184610Salfred p->handler->removefromset = NULL; 144184610Salfred result += physical_RemoveFromSet(p, r, w, e); 145184610Salfred p->handler->removefromset = ether_RemoveFromSet; 146184610Salfred 147184610Salfred return result; 148184610Salfred} 149184610Salfred 150184610Salfredstatic void 151184610Salfredether_Free(struct physical *p) 152184610Salfred{ 153184610Salfred struct etherdevice *dev = device2ether(p->handler); 154184610Salfred 155184610Salfred physical_SetDescriptor(p); 156184610Salfred if (dev->cs != -1) 157184610Salfred close(dev->cs); 158184610Salfred free(dev); 159184610Salfred} 160184610Salfred 161184610Salfredstatic const char * 162184610Salfredether_OpenInfo(struct physical *p) 163184610Salfred{ 164184610Salfred struct etherdevice *dev = device2ether(p->handler); 165184610Salfred 166184610Salfred switch (dev->connected) { 167184610Salfred case CARRIER_PENDING: 168184610Salfred return "negotiating"; 169184610Salfred case CARRIER_OK: 170184610Salfred return "established"; 171184610Salfred } 172184610Salfred 173184610Salfred return "disconnected"; 174184610Salfred} 175184610Salfred 176184610Salfredstatic void 177184610Salfredether_device2iov(struct device *d, struct iovec *iov, int *niov, 178184610Salfred int maxiov, int *auxfd, int *nauxfd) 179184610Salfred{ 180184610Salfred struct etherdevice *dev = device2ether(d); 181184610Salfred int sz = physical_MaxDeviceSize(); 182184610Salfred 183184610Salfred iov[*niov].iov_base = realloc(d, sz); 184184610Salfred if (iov[*niov].iov_base == NULL) { 185184610Salfred log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 186184610Salfred AbortProgram(EX_OSERR); 187184610Salfred } 188184610Salfred iov[*niov].iov_len = sz; 189184610Salfred (*niov)++; 190184610Salfred 191184610Salfred if (dev->cs >= 0) { 192184610Salfred *auxfd = dev->cs; 193184610Salfred (*nauxfd)++; 194184610Salfred } 195184610Salfred} 196184610Salfred 197184610Salfredstatic void 198184610Salfredether_MessageIn(struct etherdevice *dev) 199184610Salfred{ 200184610Salfred char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 201184610Salfred struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 202184610Salfred struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 203184610Salfred char unknown[14]; 204184610Salfred const char *msg; 205184610Salfred struct timeval t; 206184610Salfred fd_set *r; 207184610Salfred int ret; 208184610Salfred 209184610Salfred if (dev->cs < 0) 210184610Salfred return; 211184610Salfred 212184610Salfred if ((r = mkfdset()) == NULL) { 213184610Salfred log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 214184610Salfred return; 215184610Salfred } 216184610Salfred zerofdset(r); 217184610Salfred FD_SET(dev->cs, r); 218184610Salfred t.tv_sec = t.tv_usec = 0; 219184610Salfred ret = select(dev->cs + 1, r, NULL, NULL, &t); 220184610Salfred free(r); 221184610Salfred 222184610Salfred if (ret <= 0) 223184610Salfred return; 224184610Salfred 225184610Salfred if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) < 0) 226184610Salfred return; 227184610Salfred 228184610Salfred if (rep->header.version != NG_VERSION) { 229184610Salfred log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 230184610Salfred (long)rep->header.version, (long)NG_VERSION); 231184610Salfred return; 232184610Salfred } 233184610Salfred 234184610Salfred if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 235184610Salfred log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 236184610Salfred (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 237184610Salfred return; 238184610Salfred } 239184610Salfred 240184610Salfred switch (rep->header.cmd) { 241184610Salfred case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 242184610Salfred case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 243184610Salfred case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 244184610Salfred case NGM_PPPOE_OFFER: msg = "OFFER"; break; 245184610Salfred case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 246184610Salfred case NGM_PPPOE_FAIL: msg = "FAIL"; break; 247184610Salfred case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 248184610Salfred case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 249184610Salfred default: 250184610Salfred snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 251184610Salfred msg = unknown; 252184610Salfred break; 253184610Salfred } 254184610Salfred 255184610Salfred log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%s\")\n", msg, sts->hook); 256184610Salfred 257184610Salfred switch (rep->header.cmd) { 258184610Salfred case NGM_PPPOE_SUCCESS: 259184610Salfred dev->connected = CARRIER_OK; 260184610Salfred break; 261184610Salfred case NGM_PPPOE_FAIL: 262184610Salfred case NGM_PPPOE_CLOSE: 263184610Salfred dev->connected = CARRIER_LOST; 264184610Salfred break; 265184610Salfred } 266184610Salfred} 267184610Salfred 268184610Salfredstatic int 269184610Salfredether_AwaitCarrier(struct physical *p) 270184610Salfred{ 271184610Salfred struct etherdevice *dev = device2ether(p->handler); 272184610Salfred 273184610Salfred if (dev->connected != CARRIER_OK && !dev->timeout--) 274184610Salfred dev->connected = CARRIER_LOST; 275184610Salfred else if (dev->connected == CARRIER_PENDING) 276184610Salfred ether_MessageIn(dev); 277 278 return dev->connected; 279} 280 281static const struct device baseetherdevice = { 282 ETHER_DEVICE, 283 "ether", 284 { CD_REQUIRED, DEF_ETHERCDDELAY }, 285 ether_AwaitCarrier, 286 ether_RemoveFromSet, 287 NULL, 288 NULL, 289 NULL, 290 NULL, 291 ether_Free, 292 ether_Read, 293 ether_Write, 294 ether_device2iov, 295 NULL, 296 ether_OpenInfo 297}; 298 299struct device * 300ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 301 int maxiov, int *auxfd, int *nauxfd) 302{ 303 if (type == ETHER_DEVICE) { 304 struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 305 306 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 307 if (dev == NULL) { 308 log_Printf(LogALERT, "Failed to allocate memory: %d\n", 309 (int)(sizeof *dev)); 310 AbortProgram(EX_OSERR); 311 } 312 313 if (*nauxfd) { 314 dev->cs = *auxfd; 315 (*nauxfd)--; 316 } else 317 dev->cs = -1; 318 319 /* Refresh function pointers etc */ 320 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 321 322 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 323 return &dev->dev; 324 } 325 326 return NULL; 327} 328 329static int 330ether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 331{ 332 struct physical *p = descriptor2physical(d); 333 struct etherdevice *dev = device2ether(p->handler); 334 int result; 335 336 if (r && dev->cs >= 0) { 337 FD_SET(dev->cs, r); 338 log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 339 result = 1; 340 } else 341 result = 0; 342 343 result += physical_doUpdateSet(d, r, w, e, n, 0); 344 345 return result; 346} 347 348static int 349ether_IsSet(struct fdescriptor *d, const fd_set *fdset) 350{ 351 struct physical *p = descriptor2physical(d); 352 struct etherdevice *dev = device2ether(p->handler); 353 int result; 354 355 result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 356 result += physical_IsSet(d, fdset); 357 358 return result; 359} 360 361static void 362ether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 363 const fd_set *fdset) 364{ 365 struct physical *p = descriptor2physical(d); 366 struct etherdevice *dev = device2ether(p->handler); 367 368 if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 369 ether_MessageIn(dev); 370 if (dev->connected == CARRIER_LOST) { 371 log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 372 datalink_Down(p->dl, CLOSE_NORMAL); 373 return; 374 } 375 } 376 377 if (physical_IsSet(d, fdset)) 378 physical_DescriptorRead(d, bundle, fdset); 379} 380 381static struct device * 382ether_Abandon(struct etherdevice *dev, struct physical *p) 383{ 384 /* Abandon our node construction */ 385 close(dev->cs); 386 close(p->fd); 387 p->fd = -2; /* Nobody else need try.. */ 388 free(dev); 389 390 return NULL; 391} 392 393struct device * 394ether_Create(struct physical *p) 395{ 396 u_char rbuf[2048]; 397 struct etherdevice *dev; 398 struct ng_mesg *resp; 399 const struct hooklist *hlist; 400 const struct nodeinfo *ninfo; 401 int f; 402 403 dev = NULL; 404 if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 405 PPPOE_NODE_TYPE_LEN) && 406 p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 407 const struct linkinfo *nlink; 408 struct ngpppoe_init_data *data; 409 struct ngm_mkpeer mkp; 410 struct ngm_connect ngc; 411 const char *iface, *provider; 412 char *path, etherid[12]; 413 int ifacelen, providerlen; 414 char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 415 416 p->fd--; /* We own the device - change fd */ 417 418#if defined(__FreeBSD__) && !defined(NOKLDLOAD) 419 if (modfind("netgraph") == -1) { 420 log_Printf(LogWARN, "Netgraph is not built into the kernel\n"); 421 return NULL; 422 } 423 424 if (modfind("ng_ether") == -1 && ID0kldload("ng_ether") == -1) 425 /* 426 * Don't treat this as an error as older kernels have this stuff 427 * built in as part of the netgraph node itself. 428 */ 429 log_Printf(LogWARN, "kldload: ng_ether: %s\n", strerror(errno)); 430 431 if (modfind("ng_socket") == -1 && ID0kldload("ng_socket") == -1) { 432 log_Printf(LogWARN, "kldload: ng_socket: %s\n", strerror(errno)); 433 return NULL; 434 } 435#endif 436 437 if ((dev = malloc(sizeof *dev)) == NULL) 438 return NULL; 439 440 iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 441 442 provider = strchr(iface, ':'); 443 if (provider) { 444 ifacelen = provider - iface; 445 provider++; 446 providerlen = strlen(provider); 447 } else { 448 ifacelen = strlen(iface); 449 provider = ""; 450 providerlen = 0; 451 } 452 453 /* 454 * We're going to do this (where tunN is our tunnel device): 455 * 456 * .---------. 457 * | ether | 458 * | <iface> | dev->cs 459 * `---------' | 460 * (orphan) p->fd | 461 * | | | 462 * | | | 463 * (ethernet) | | 464 * .---------. .-----------. 465 * | pppoe | | socket | 466 * | <iface> |(tunN)<---->(tunN)| <unnamed> | 467 * `--------- `-----------' 468 * (tunX) 469 * ^ 470 * | 471 * `--->(tunX) 472 */ 473 474 /* Create a socket node */ 475 if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 476 log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 477 strerror(errno)); 478 free(dev); 479 return NULL; 480 } 481 482 /* 483 * Ask for a list of hooks attached to the "ether" node. This node should 484 * magically exist as a way of hooking stuff onto an ethernet device 485 */ 486 path = (char *)alloca(ifacelen + 2); 487 sprintf(path, "%.*s:", ifacelen, iface); 488 if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 489 NULL, 0) < 0) { 490 log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 491 path, strerror(errno)); 492 return ether_Abandon(dev, p); 493 } 494 495 /* Get our list back */ 496 resp = (struct ng_mesg *)rbuf; 497 if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) < 0) { 498 log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 499 strerror(errno)); 500 return ether_Abandon(dev, p); 501 } 502 503 hlist = (const struct hooklist *)resp->data; 504 ninfo = &hlist->nodeinfo; 505 506 /* Make sure we've got the right type of node */ 507 if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 508 sizeof NG_ETHER_NODE_TYPE - 1)) { 509 log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 510 NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 511 return ether_Abandon(dev, p); 512 } 513 514 log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 515 path, ninfo->id); 516 517 /* look for a hook already attached. */ 518 for (f = 0; f < ninfo->hooks; f++) { 519 nlink = &hlist->link[f]; 520 521 log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 522 nlink->peerhook); 523 524 if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 525 !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 526 /* 527 * Something is using the data coming out of this ``ether'' node. 528 * If it's a PPPoE node, we use that node, otherwise we complain that 529 * someone else is using the node. 530 */ 531 if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 532 /* Use this PPPoE node ! */ 533 snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 534 else { 535 log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 536 path, nlink->nodeinfo.type); 537 return ether_Abandon(dev, p); 538 } 539 break; 540 } 541 } 542 543 if (f == ninfo->hooks) { 544 /* 545 * Create a new ``PPPoE'' node connected to the ``ether'' node using 546 * the magic ``orphan'' and ``ethernet'' hooks 547 */ 548 snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 549 snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 550 snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 551 snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 552 553 log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 554 etherid, mkp.ourhook, mkp.peerhook); 555 556 if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 557 NGM_MKPEER, &mkp, sizeof mkp) < 0) { 558 log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 559 etherid, strerror(errno)); 560 return ether_Abandon(dev, p); 561 } 562 563 snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 564 } 565 566 snprintf(dev->hook, sizeof dev->hook, "%s%d", 567 TUN_NAME, p->dl->bundle->unit); 568 569 /* 570 * Connect the PPPoE node to our socket node. 571 * ngc.path has already been set up 572 */ 573 snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 574 memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 575 576 log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 577 ngc.ourhook, ngc.path, ngc.peerhook); 578 if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 579 NGM_CONNECT, &ngc, sizeof ngc) < 0) { 580 log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 581 "nodes: %s\n", strerror(errno)); 582 return ether_Abandon(dev, p); 583 } 584 585 /* And finally, request a connection to the given provider */ 586 587 data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 588 snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 589 memcpy(data->data, provider, providerlen); 590 data->data_len = providerlen; 591 592 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 593 log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 594 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 595 NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 596 log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 597 connectpath, strerror(errno)); 598 return ether_Abandon(dev, p); 599 } 600 601 /* Hook things up so that we monitor dev->cs */ 602 p->desc.UpdateSet = ether_UpdateSet; 603 p->desc.IsSet = ether_IsSet; 604 p->desc.Read = ether_DescriptorRead; 605 606 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 607 switch (p->cfg.cd.necessity) { 608 case CD_VARIABLE: 609 dev->dev.cd.delay = p->cfg.cd.delay; 610 break; 611 case CD_REQUIRED: 612 dev->dev.cd = p->cfg.cd; 613 break; 614 case CD_NOTREQUIRED: 615 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 616 p->link.name, dev->dev.cd.delay); 617 case CD_DEFAULT: 618 break; 619 } 620 621 dev->timeout = dev->dev.cd.delay; 622 dev->connected = CARRIER_PENDING; 623 624 } else { 625 /* See if we're a netgraph socket */ 626 struct sockaddr_ng ngsock; 627 struct sockaddr *sock = (struct sockaddr *)&ngsock; 628 int sz; 629 630 sz = sizeof ngsock; 631 if (getsockname(p->fd, sock, &sz) != -1 && sock->sa_family == AF_NETGRAPH) { 632 /* 633 * It's a netgraph node... We can't determine hook names etc, so we 634 * stay pretty impartial.... 635 */ 636 log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 637 638 if ((dev = malloc(sizeof *dev)) == NULL) { 639 log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 640 p->link.name, strerror(errno)); 641 return NULL; 642 } 643 644 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 645 dev->cs = -1; 646 dev->timeout = 0; 647 dev->connected = CARRIER_OK; 648 *dev->hook = '\0'; 649 } 650 } 651 652 if (dev) { 653 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 654 655 /* Moan about (and fix) invalid LCP configurations */ 656 if (p->link.lcp.cfg.mru > 1492) { 657 log_Printf(LogWARN, "%s: Reducing MRU to 1492\n", p->link.name); 658 p->link.lcp.cfg.mru = 1492; 659 } 660 if (p->dl->bundle->cfg.mtu > 1492) { 661 log_Printf(LogWARN, "%s: Reducing MTU to 1492\n", p->link.name); 662 p->dl->bundle->cfg.mtu = 1492; 663 } 664 665 return &dev->dev; 666 } 667 668 return NULL; 669} 670