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: head/usr.sbin/ppp/ether.c 99086 2002-06-29 18:49:08Z brian $
|
| 26 * $FreeBSD: head/usr.sbin/ppp/ether.c 132818 2004-07-29 05:59:43Z glebius $ |
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
101struct 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
113int
114ether_DeviceSize(void)
115{
116 return sizeof(struct etherdevice);
117}
118
119static ssize_t
120ether_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 : n;
125}
126
127static ssize_t
128ether_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
135static int
136ether_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
157static void
158ether_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
168static const char *
169ether_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
183static int
184ether_Slot(struct physical *p)
185{
186 struct etherdevice *dev = device2ether(p->handler);
187
188 return dev->slot;
189}
190
191
192static void
193ether_device2iov(struct device *d, struct iovec *iov, int *niov,
194 int maxiov, 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
213static void
214ether_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
310static int
311ether_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
323static 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
344struct device *
345ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov,
346 int maxiov, 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
374static int
375ether_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
393static int
394ether_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
406static void
407ether_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
426static struct device *
427ether_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
438struct device *
439ether_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;
|
| 446 char *path, *sessionid, *mode; |
447 int ifacelen, f;
448
449 dev = NULL;
450 path = NULL;
451 ifacelen = 0;
452 if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE,
453 PPPOE_NODE_TYPE_LEN) &&
454 p->name.full[PPPOE_NODE_TYPE_LEN] == ':') {
455 const struct linkinfo *nlink;
456 struct ngpppoe_init_data *data;
457 struct ngm_mkpeer mkp;
458 struct ngm_connect ngc;
459 const char *iface, *provider;
460 char etherid[12];
461 int providerlen;
462 char connectpath[sizeof dev->hook + 2]; /* .:<hook> */
463
464 p->fd--; /* We own the device - change fd */
465
466 loadmodules(LOAD_VERBOSLY, "netgraph", "ng_ether", "ng_pppoe", "ng_socket",
467 NULL);
468
469 if ((dev = malloc(sizeof *dev)) == NULL)
470 return NULL;
471
472 iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1;
473
474 provider = strchr(iface, ':');
475 if (provider) {
476 ifacelen = provider - iface;
477 provider++;
478 providerlen = strlen(provider);
479 } else {
480 ifacelen = strlen(iface);
481 provider = "";
482 providerlen = 0;
483 }
484
485 /*
486 * We're going to do this (where tunN is our tunnel device):
487 *
488 * .---------.
489 * | ether |
490 * | <iface> | dev->cs
491 * `---------' |
492 * (orphan) p->fd |
493 * | | |
494 * | | |
495 * (ethernet) | |
496 * .---------. .-----------.
497 * | pppoe | | socket |
498 * | <iface> |(tunN)<---->(tunN)| <unnamed> |
499 * `--------- `-----------'
500 * (tunX)
501 * ^
502 * |
503 * `--->(tunX)
504 */
505
506 /* Create a socket node */
507 if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) {
508 log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n",
509 strerror(errno));
510 free(dev);
511 p->fd = -2;
512 return NULL;
513 }
514
515 /*
516 * Ask for a list of hooks attached to the "ether" node. This node should
517 * magically exist as a way of hooking stuff onto an ethernet device
518 */
519 path = (char *)alloca(ifacelen + 2);
520 sprintf(path, "%.*s:", ifacelen, iface);
521 if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS,
522 NULL, 0) < 0) {
523 log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n",
524 path, strerror(errno));
525 return ether_Abandon(dev, p);
526 }
527
528 /* Get our list back */
529 resp = (struct ng_mesg *)rbuf;
530 if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) <= 0) {
531 log_Printf(LogWARN, "Cannot get netgraph response: %s\n",
532 strerror(errno));
533 return ether_Abandon(dev, p);
534 }
535
536 hlist = (const struct hooklist *)resp->data;
537 ninfo = &hlist->nodeinfo;
538
539 /* Make sure we've got the right type of node */
540 if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE,
541 sizeof NG_ETHER_NODE_TYPE - 1)) {
542 log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``"
543 NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type);
544 return ether_Abandon(dev, p);
545 }
546
547 log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n",
548 path, ninfo->id);
549
550 /* look for a hook already attached. */
551 for (f = 0; f < ninfo->hooks; f++) {
552 nlink = &hlist->link[f];
553
554 log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook,
555 nlink->peerhook);
556
557 if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) ||
558 !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) {
559 /*
560 * Something is using the data coming out of this ``ether'' node.
561 * If it's a PPPoE node, we use that node, otherwise we complain that
562 * someone else is using the node.
563 */
564 if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE))
565 /* Use this PPPoE node ! */
566 snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id);
567 else {
568 log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n",
569 path, nlink->nodeinfo.type);
570 return ether_Abandon(dev, p);
571 }
572 break;
573 }
574 }
575
576 if (f == ninfo->hooks) {
577 /*
578 * Create a new ``PPPoE'' node connected to the ``ether'' node using
579 * the ``orphan'' and ``ethernet'' hooks
580 */
581 snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE);
582 snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN);
583 snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET);
584 snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id);
585
586 log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n",
587 etherid, mkp.ourhook, mkp.peerhook);
588
589 if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE,
590 NGM_MKPEER, &mkp, sizeof mkp) < 0) {
591 log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n",
592 etherid, strerror(errno));
593 return ether_Abandon(dev, p);
594 }
595
596 snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN);
597 }
598
599 snprintf(dev->hook, sizeof dev->hook, "%s%d",
600 TUN_NAME, p->dl->bundle->unit);
601
602 /*
603 * Connect the PPPoE node to our socket node.
604 * ngc.path has already been set up
605 */
606 snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook);
607 memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook);
608
609 log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n",
610 ngc.ourhook, ngc.path, ngc.peerhook);
611 if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE,
612 NGM_CONNECT, &ngc, sizeof ngc) < 0) {
613 log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph "
614 "nodes: %s\n", strerror(errno));
615 return ether_Abandon(dev, p);
616 }
617
618 /* Bring the Ethernet interface up */
619 path[ifacelen] = '\0'; /* Remove the trailing ':' */
620 if (!iface_SetFlags(path, IFF_UP))
621 log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n",
622 p->link.name, path);
623
|
624 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook);
625
626 /* Configure node to 3Com mode if needed */
627 if (p->cfg.pppoe_configured) {
628 mode = p->cfg.nonstandard_pppoe ? NG_PPPOE_NONSTANDARD : NG_PPPOE_STANDARD;
629 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE,
630 NGM_PPPOE_SETMODE, mode, strlen(mode) + 1) == -1) {
631 log_Printf(LogWARN, "``%s'': Cannot configure netgraph node: %s\n",
632 connectpath, strerror(errno));
633 return ether_Abandon(dev, p);
634 }
635 }
636 |
637 /* And finally, request a connection to the given provider */
638
639 data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen);
640 snprintf(data->hook, sizeof data->hook, "%s", dev->hook);
641 memcpy(data->data, provider, providerlen);
642 data->data_len = providerlen;
643
|
631 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook);
|
644 log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath);
645 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE,
646 NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) {
647 log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n",
648 connectpath, strerror(errno));
649 return ether_Abandon(dev, p);
650 }
651
652 /* Hook things up so that we monitor dev->cs */
653 p->desc.UpdateSet = ether_UpdateSet;
654 p->desc.IsSet = ether_IsSet;
655 p->desc.Read = ether_DescriptorRead;
656
657 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev);
658 switch (p->cfg.cd.necessity) {
659 case CD_VARIABLE:
660 dev->dev.cd.delay = p->cfg.cd.delay;
661 break;
662 case CD_REQUIRED:
663 dev->dev.cd = p->cfg.cd;
664 break;
665 case CD_NOTREQUIRED:
666 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n",
667 p->link.name, dev->dev.cd.delay);
668 case CD_DEFAULT:
669 break;
670 }
671
672 dev->timeout = dev->dev.cd.delay;
673 dev->connected = CARRIER_PENDING;
674 /* This will be overridden by our session id - if provided by netgraph */
675 dev->slot = GetIfIndex(path);
676 } else {
677 /* See if we're a netgraph socket */
678 struct stat st;
679
680 if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) {
681 struct sockaddr_storage ssock;
682 struct sockaddr *sock = (struct sockaddr *)&ssock;
683 int sz;
684
685 sz = sizeof ssock;
686 if (getsockname(p->fd, sock, &sz) == -1) {
687 log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name);
688 close(p->fd);
689 p->fd = -1;
690 return NULL;
691 }
692
693 if (sock->sa_family == AF_NETGRAPH) {
694 /*
695 * It's a netgraph node... We can't determine hook names etc, so we
696 * stay pretty impartial....
697 */
698 log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name);
699
700 if ((dev = malloc(sizeof *dev)) == NULL) {
701 log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n",
702 p->link.name, strerror(errno));
703 return NULL;
704 }
705
706 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev);
707 dev->cs = -1;
708 dev->timeout = 0;
709 dev->connected = CARRIER_OK;
710 *dev->hook = '\0';
711
712 /*
713 * If we're being envoked from pppoed(8), we may have a SESSIONID
714 * set in the environment. If so, use it as the slot
715 */
716 if ((sessionid = getenv("SESSIONID")) != NULL) {
717 char *end;
718 u_long slot;
719
720 slot = strtoul(sessionid, &end, 16);
721 dev->slot = end != sessionid && *end == '\0' ? slot : 0;
722 } else
723 dev->slot = 0;
724 }
725 }
726 }
727
728 if (dev) {
729 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF);
730 return &dev->dev;
731 }
732
733 return NULL;
734}
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