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>
40 #include <netisdn/i4b_ioctl.h>
41 #include <netisdn/i4b_rbch_ioctl.h>
43 #include <i4b/i4b_ioctl.h>
44 #include <i4b/i4b_rbch_ioctl.h>
61 #include "throughput.h"
67 #include "descriptor.h"
78 #define Online(dev) ((dev)->mbits & TIOCM_CD)
81 struct device dev; /* What struct physical knows about */
82 struct pppTimer Timer; /* CD checks */
83 int mbits; /* Current DCD status */
84 int carrier_seconds; /* seconds before CD is *required* */
87 #define device2i4b(d) ((d)->type == I4B_DEVICE ? (struct i4bdevice *)d : NULL)
92 return sizeof(struct i4bdevice);
96 * i4b_Timeout() watches the DCD signal and mentions it if it's status
100 i4b_Timeout(void *data)
102 struct physical *p = data;
103 struct i4bdevice *dev = device2i4b(p->handler);
106 timer_Stop(&dev->Timer);
107 dev->Timer.load = SECTICKS; /* Once a second please */
108 timer_Start(&dev->Timer);
112 if (ioctl(p->fd, TIOCMGET, &dev->mbits) < 0) {
113 log_Printf(LogPHASE, "%s: ioctl error (%s)!\n", p->link.name,
115 datalink_Down(p->dl, CLOSE_NORMAL);
116 timer_Stop(&dev->Timer);
123 /* First time looking for carrier */
125 log_Printf(LogPHASE, "%s: %s: CD detected\n", p->link.name, p->name.full);
126 else if (++dev->carrier_seconds >= dev->dev.cd.delay) {
127 log_Printf(LogPHASE, "%s: %s: No carrier"
128 " (increase ``set cd'' from %d ?)\n",
129 p->link.name, p->name.full, dev->dev.cd.delay);
130 timer_Stop(&dev->Timer);
131 /* i4b_AwaitCarrier() will notice */
134 log_Printf(LogDEBUG, "%s: %s: Still no carrier (%d/%d)\n",
135 p->link.name, p->name.full, dev->carrier_seconds,
140 change = ombits ^ dev->mbits;
141 if (change & TIOCM_CD) {
142 if (dev->mbits & TIOCM_CD)
143 log_Printf(LogDEBUG, "%s: offline -> online\n", p->link.name);
145 log_Printf(LogDEBUG, "%s: online -> offline\n", p->link.name);
146 log_Printf(LogPHASE, "%s: Carrier lost\n", p->link.name);
147 datalink_Down(p->dl, CLOSE_NORMAL);
148 timer_Stop(&dev->Timer);
151 log_Printf(LogDEBUG, "%s: Still %sline\n", p->link.name,
152 Online(dev) ? "on" : "off");
157 i4b_StartTimer(struct physical *p)
159 struct i4bdevice *dev = device2i4b(p->handler);
161 timer_Stop(&dev->Timer);
162 dev->Timer.load = SECTICKS;
163 dev->Timer.func = i4b_Timeout;
164 dev->Timer.name = "i4b CD";
166 log_Printf(LogDEBUG, "%s: Using i4b_Timeout [%p]\n",
167 p->link.name, i4b_Timeout);
168 timer_Start(&dev->Timer);
172 i4b_AwaitCarrier(struct physical *p)
174 struct i4bdevice *dev = device2i4b(p->handler);
176 if (dev->mbits == -1) {
177 if (dev->Timer.state == TIMER_STOPPED) {
178 dev->carrier_seconds = 0;
181 return CARRIER_PENDING; /* Not yet ! */
184 return Online(dev) ? CARRIER_OK : CARRIER_LOST;
188 i4b_Raw(struct physical *p)
192 log_Printf(LogDEBUG, "%s: Entering i4b_Raw\n", p->link.name);
194 oldflag = fcntl(p->fd, F_GETFL, 0);
197 fcntl(p->fd, F_SETFL, oldflag | O_NONBLOCK);
203 i4b_Offline(struct physical *p)
205 struct i4bdevice *dev = device2i4b(p->handler);
208 timer_Stop(&dev->Timer);
213 ioctl(p->fd, TIOCCDTR, &dummy);
219 i4b_Cooked(struct physical *p)
223 i4b_Offline(p); /* In case of emergency close()s */
225 if ((oldflag = fcntl(p->fd, F_GETFL, 0)) != -1)
226 fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK);
230 i4b_StopTimer(struct physical *p)
232 struct i4bdevice *dev = device2i4b(p->handler);
234 timer_Stop(&dev->Timer);
238 i4b_Free(struct physical *p)
240 struct i4bdevice *dev = device2i4b(p->handler);
242 i4b_Offline(p); /* In case of emergency close()s */
247 i4b_Speed(struct physical *p)
252 if (tcgetattr(p->fd, &ios) == -1 ||
253 (ret = SpeedToUnsigned(cfgetispeed(&ios))) == 0)
260 i4b_OpenInfo(struct physical *p)
262 struct i4bdevice *dev = device2i4b(p->handler);
266 snprintf(buf, sizeof buf, "carrier took %ds", dev->carrier_seconds);
274 i4b_Slot(struct physical *p)
278 if (fstat(p->fd, &st) == 0)
279 return minor(st.st_rdev);
285 i4b_device2iov(struct device *d, struct iovec *iov, int *niov,
286 int maxiov __unused, int *auxfd __unused, int *nauxfd __unused)
288 struct i4bdevice *dev = device2i4b(d);
289 int sz = physical_MaxDeviceSize();
291 iov[*niov].iov_base = realloc(d, sz);
292 if (iov[*niov].iov_base == NULL) {
293 log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz);
294 AbortProgram(EX_OSERR);
296 iov[*niov].iov_len = sz;
299 if (dev->Timer.state != TIMER_STOPPED) {
300 timer_Stop(&dev->Timer);
301 dev->Timer.state = TIMER_RUNNING;
305 static struct device basei4bdevice = {
309 { CD_REQUIRED, DEF_I4BCDDELAY },
327 i4b_iov2device(int type, struct physical *p, struct iovec *iov, int *niov,
328 int maxiov __unused, int *auxfd __unused, int *nauxfd __unused)
330 if (type == I4B_DEVICE) {
331 struct i4bdevice *dev = (struct i4bdevice *)iov[(*niov)++].iov_base;
333 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */
335 log_Printf(LogALERT, "Failed to allocate memory: %d\n",
337 AbortProgram(EX_OSERR);
340 /* Refresh function pointers etc */
341 memcpy(&dev->dev, &basei4bdevice, sizeof dev->dev);
343 physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE);
344 if (dev->Timer.state != TIMER_STOPPED) {
345 dev->Timer.state = TIMER_STOPPED;
346 p->handler = &dev->dev; /* For the benefit of StartTimer */
356 i4b_Create(struct physical *p)
358 struct i4bdevice *dev;
363 if (p->fd < 0 || ioctl(p->fd, I4B_RBCH_VR_REQ, &req))
364 /* Don't want this */
368 * We don't bother validating the version.... all versions of i4b that
369 * support I4B_RBCH_VR_REQ are fair game :-)
372 if (*p->name.full == '\0') {
373 physical_SetDevice(p, ttyname(p->fd));
374 log_Printf(LogDEBUG, "%s: Input is an i4b version %d.%d.%d isdn "
375 "device (%s)\n", p->link.name, req.version, req.release,
376 req.step, p->name.full);
379 log_Printf(LogDEBUG, "%s: Opened %s (i4b version %d.%d.%d)\n",
380 p->link.name, p->name.full, req.version, req.release, req.step);
384 /* We're gonna return an i4bdevice (unless something goes horribly wrong) */
386 if ((dev = malloc(sizeof *dev)) == NULL) {
387 /* Complete failure - parent doesn't continue trying to ``create'' */
393 memcpy(&dev->dev, &basei4bdevice, sizeof dev->dev);
394 memset(&dev->Timer, '\0', sizeof dev->Timer);
397 switch (p->cfg.cd.necessity) {
399 dev->dev.cd.delay = p->cfg.cd.delay;
402 dev->dev.cd = p->cfg.cd;
405 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n",
406 p->link.name, dev->dev.cd.delay);
411 oldflag = fcntl(p->fd, F_GETFL, 0);
413 /* Complete failure - parent doesn't continue trying to ``create'' */
415 log_Printf(LogWARN, "%s: Open: Cannot get physical flags: %s\n",
416 p->link.name, strerror(errno));
423 fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK);
426 strncpy(number, datalink_ChoosePhoneNumber(p->dl), sizeof number - 1);
427 number[sizeof number - 1] = '\0';
428 if (number[0] == '\0')
431 if (dial && ioctl(p->fd, I4B_RBCH_DIALOUT, number) == -1) {
432 /* Complete failure - parent doesn't continue trying to ``create'' */
434 log_Printf(LogWARN, "%s: ioctl(I4B_RBCH_DIALOUT): %s\n",
435 p->link.name, strerror(errno));
443 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNC);