2 * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/param.h>
32 #if defined(__OpenBSD__) || defined(__NetBSD__)
33 #include <sys/ioctl.h>
39 #include <machine/i4b_ioctl.h>
40 #include <machine/i4b_rbch_ioctl.h>
42 #include <i4b/i4b_ioctl.h>
43 #include <i4b/i4b_rbch_ioctl.h>
60 #include "throughput.h"
66 #include "descriptor.h"
77 #define Online(dev) ((dev)->mbits & TIOCM_CD)
80 struct device dev; /* What struct physical knows about */
81 struct pppTimer Timer; /* CD checks */
82 int mbits; /* Current DCD status */
83 int carrier_seconds; /* seconds before CD is *required* */
86 #define device2i4b(d) ((d)->type == I4B_DEVICE ? (struct i4bdevice *)d : NULL)
91 return sizeof(struct i4bdevice);
95 * i4b_Timeout() watches the DCD signal and mentions it if it's status
99 i4b_Timeout(void *data)
101 struct physical *p = data;
102 struct i4bdevice *dev = device2i4b(p->handler);
105 timer_Stop(&dev->Timer);
106 dev->Timer.load = SECTICKS; /* Once a second please */
107 timer_Start(&dev->Timer);
111 if (ioctl(p->fd, TIOCMGET, &dev->mbits) < 0) {
112 log_Printf(LogPHASE, "%s: ioctl error (%s)!\n", p->link.name,
114 datalink_Down(p->dl, CLOSE_NORMAL);
115 timer_Stop(&dev->Timer);
122 /* First time looking for carrier */
124 log_Printf(LogPHASE, "%s: %s: CD detected\n", p->link.name, p->name.full);
125 else if (++dev->carrier_seconds >= dev->dev.cd.delay) {
126 log_Printf(LogPHASE, "%s: %s: No carrier"
127 " (increase ``set cd'' from %d ?)\n",
128 p->link.name, p->name.full, dev->dev.cd.delay);
129 timer_Stop(&dev->Timer);
130 /* i4b_AwaitCarrier() will notice */
133 log_Printf(LogDEBUG, "%s: %s: Still no carrier (%d/%d)\n",
134 p->link.name, p->name.full, dev->carrier_seconds,
139 change = ombits ^ dev->mbits;
140 if (change & TIOCM_CD) {
141 if (dev->mbits & TIOCM_CD)
142 log_Printf(LogDEBUG, "%s: offline -> online\n", p->link.name);
144 log_Printf(LogDEBUG, "%s: online -> offline\n", p->link.name);
145 log_Printf(LogPHASE, "%s: Carrier lost\n", p->link.name);
146 datalink_Down(p->dl, CLOSE_NORMAL);
147 timer_Stop(&dev->Timer);
150 log_Printf(LogDEBUG, "%s: Still %sline\n", p->link.name,
151 Online(dev) ? "on" : "off");
156 i4b_StartTimer(struct physical *p)
158 struct i4bdevice *dev = device2i4b(p->handler);
160 timer_Stop(&dev->Timer);
161 dev->Timer.load = SECTICKS;
162 dev->Timer.func = i4b_Timeout;
163 dev->Timer.name = "i4b CD";
165 log_Printf(LogDEBUG, "%s: Using i4b_Timeout [%p]\n",
166 p->link.name, i4b_Timeout);
167 timer_Start(&dev->Timer);
171 i4b_AwaitCarrier(struct physical *p)
173 struct i4bdevice *dev = device2i4b(p->handler);
175 if (dev->mbits == -1) {
176 if (dev->Timer.state == TIMER_STOPPED) {
177 dev->carrier_seconds = 0;
180 return CARRIER_PENDING; /* Not yet ! */
183 return Online(dev) ? CARRIER_OK : CARRIER_LOST;
187 i4b_Raw(struct physical *p)
191 log_Printf(LogDEBUG, "%s: Entering i4b_Raw\n", p->link.name);
193 oldflag = fcntl(p->fd, F_GETFL, 0);
196 fcntl(p->fd, F_SETFL, oldflag | O_NONBLOCK);
202 i4b_Offline(struct physical *p)
204 struct i4bdevice *dev = device2i4b(p->handler);
207 timer_Stop(&dev->Timer);
212 ioctl(p->fd, TIOCCDTR, &dummy);
218 i4b_Cooked(struct physical *p)
222 i4b_Offline(p); /* In case of emergency close()s */
224 if ((oldflag = fcntl(p->fd, F_GETFL, 0)) != -1)
225 fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK);
229 i4b_StopTimer(struct physical *p)
231 struct i4bdevice *dev = device2i4b(p->handler);
233 timer_Stop(&dev->Timer);
237 i4b_Free(struct physical *p)
239 struct i4bdevice *dev = device2i4b(p->handler);
241 i4b_Offline(p); /* In case of emergency close()s */
246 i4b_Speed(struct physical *p)
250 if (tcgetattr(p->fd, &ios) == -1)
253 return SpeedToInt(cfgetispeed(&ios));
257 i4b_OpenInfo(struct physical *p)
259 struct i4bdevice *dev = device2i4b(p->handler);
263 snprintf(buf, sizeof buf, "carrier took %ds", dev->carrier_seconds);
271 i4b_device2iov(struct device *d, struct iovec *iov, int *niov,
272 int maxiov, int *auxfd, int *nauxfd)
274 struct i4bdevice *dev = device2i4b(d);
275 int sz = physical_MaxDeviceSize();
277 iov[*niov].iov_base = realloc(d, sz);
278 if (iov[*niov].iov_base == NULL) {
279 log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz);
280 AbortProgram(EX_OSERR);
282 iov[*niov].iov_len = sz;
285 if (dev->Timer.state != TIMER_STOPPED) {
286 timer_Stop(&dev->Timer);
287 dev->Timer.state = TIMER_RUNNING;
291 static struct device basei4bdevice = {
294 { CD_REQUIRED, DEF_I4BCDDELAY },
310 i4b_iov2device(int type, struct physical *p, struct iovec *iov, int *niov,
311 int maxiov, int *auxfd, int *nauxfd)
313 if (type == I4B_DEVICE) {
314 struct i4bdevice *dev = (struct i4bdevice *)iov[(*niov)++].iov_base;
316 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */
318 log_Printf(LogALERT, "Failed to allocate memory: %d\n",
320 AbortProgram(EX_OSERR);
323 /* Refresh function pointers etc */
324 memcpy(&dev->dev, &basei4bdevice, sizeof dev->dev);
326 physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE);
327 if (dev->Timer.state != TIMER_STOPPED) {
328 dev->Timer.state = TIMER_STOPPED;
329 p->handler = &dev->dev; /* For the benefit of StartTimer */
339 i4b_Create(struct physical *p)
341 struct i4bdevice *dev;
346 if (p->fd < 0 || ioctl(p->fd, I4B_RBCH_VR_REQ, &req))
347 /* Don't want this */
351 * We don't bother validating the version.... all versions of i4b that
352 * support I4B_RBCH_VR_REQ are fair game :-)
355 if (*p->name.full == '\0') {
356 physical_SetDevice(p, ttyname(p->fd));
357 log_Printf(LogDEBUG, "%s: Input is an i4b version %d.%d.%d isdn "
358 "device (%s)\n", p->link.name, req.version, req.release,
359 req.step, p->name.full);
361 log_Printf(LogDEBUG, "%s: Opened %s (i4b version %d.%d.%d)\n",
362 p->link.name, p->name.full, req.version, req.release, req.step);
364 /* We're gonna return an i4bdevice (unless something goes horribly wrong) */
366 if ((dev = malloc(sizeof *dev)) == NULL) {
367 /* Complete failure - parent doesn't continue trying to ``create'' */
373 memcpy(&dev->dev, &basei4bdevice, sizeof dev->dev);
374 memset(&dev->Timer, '\0', sizeof dev->Timer);
377 switch (p->cfg.cd.necessity) {
379 dev->dev.cd.delay = p->cfg.cd.delay;
382 dev->dev.cd = p->cfg.cd;
385 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n",
386 p->link.name, dev->dev.cd.delay);
391 oldflag = fcntl(p->fd, F_GETFL, 0);
393 /* Complete failure - parent doesn't continue trying to ``create'' */
395 log_Printf(LogWARN, "%s: Open: Cannot get physical flags: %s\n",
396 p->link.name, strerror(errno));
403 fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK);
405 strncpy(number, datalink_ChoosePhoneNumber(p->dl), sizeof number - 1);
406 number[sizeof number - 1] = '\0';
407 if (ioctl(p->fd, I4B_RBCH_DIALOUT, number) == -1) {
408 /* Complete failure - parent doesn't continue trying to ``create'' */
410 log_Printf(LogWARN, "%s: ioctl(I4B_RBCH_DIALOUT): %s\n",
411 p->link.name, strerror(errno));
419 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNC);