devices/dialup/dialup.cpp

69 switch_to_command_mode(dialup_device* device)
71 	if (device->state != UP)
74 	if (!device->data_mode)
77 	snooze(device->escape_silence);
79 	ssize_t size = write(device->fd, device->escape_string,
80 			strlen(device->escape_string));
81 	if (size != (ssize_t)strlen(device->escape_string))
84 	snooze(device->escape_silence);
85 	device->data_mode = false;
92 switch_to_data_mode(dialup_device* device)
94 	if (device->state != UP)
97 	if (device->data_mode)
103 	ssize_t size = write(device->fd, "ATO", 3);
107 	device->data_mode = true;
114 send_command(dialup_device* device, const char* command)
117 	if (device->data_mode) {
118 		status = switch_to_command_mode(device);
123 	ssize_t bytesWritten = write(device->fd, command, strlen(command));
127 	if (write(device->fd, "\r", 1) != 1)
135 read_command_reply(dialup_device* device, const char* command,
138 	if (device->data_mode)
144 		ssize_t bytesRead = read(device->fd, &reply[i], 1);
173 hangup(dialup_device* device)
175 	if (device->state != UP)
178 	// TODO: turn device's DTR down instead. Or do that too after sending command
181 	if (send_command(device, device->hangup_string) != B_OK
182 		|| read_command_reply(device, device->hangup_string,
187 	device->state = DOWN;
198 	// make sure this is a device in /dev/ports
206 	dialup_device* device = new (std::nothrow)dialup_device;
207 	if (device == NULL) {
212 	memset(device, 0, sizeof(dialup_device));
214 	strcpy(device->name, name);
215 	device->flags = IFF_POINTOPOINT;
216 	device->type = IFT_PPP; // this device handle RFC 1331 frame format only
217 	device->mtu = 1500;
218 	device->media = 0;
219 	device->header_length = HDLC_HEADER_LENGTH;
221 	device->fd = -1;
222 	device->state = DOWN;
223 	device->data_mode = false;
224 	device->last_closing_flag_sequence_time = 0;
227 	strncpy(device->init_string, "ATZ", sizeof(device->init_string));
228 	strncpy(device->dial_string, "ATDT", sizeof(device->dial_string));
229 	strncpy(device->hangup_string, "ATH0", sizeof(device->hangup_string));
231 	strncpy(device->escape_string, "+++", sizeof(device->escape_string));
232 	device->escape_silence = 1000000;
234 	device->tx_flag_timeout = 1000000;
237 	memset(&device->rx_accm, 0xFF, sizeof(device->rx_accm));
238 	memset(&device->tx_accm, 0xFF, sizeof(device->tx_accm));
240 	*_device = device;
248 	dialup_device* device = (dialup_device*)_device;
249 	delete device;
260 	dialup_device* device = (dialup_device*)_device;
262 	device->fd = open(device->name, O_RDWR);
263 	if (device->fd < 0)
266 	device->media = IFM_ACTIVE;
269 	if (ioctl(device->fd, TCGETA, &device->line_config,
270 		sizeof(device->line_config)) < 0)
274 	device->line_config.c_cflag &= ~CBAUD;
275 	device->line_config.c_cflag &= CSIZE;
276 	device->line_config.c_cflag &= CS8;
277 	device->line_config.c_cflag |= B115200;	// TODO: make this configurable too...
278 	device->line_config.c_cflag |= (CLOCAL | CREAD);
279 	device->line_config.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
280 	device->line_config.c_oflag &= ~OPOST;
281 	device->line_config.c_cc[VMIN] = 0;
282 	device->line_config.c_cc[VTIME] = 10;
285 	if(ioctl(device->fd, TCSETA, &device->line_config,
286 		sizeof(device->line_config)) < 0)
293 	if (strlen(device->init_string) > 0) {
295 		if (send_command(device, device->init_string) != B_OK
296 			|| read_command_reply(device, device->init_string,
306 	if (strlen(device->dial_string) > 0) {
308 		device->state = DIALING;
309 		if (send_command(device, device->dial_string) != B_OK
310 			|| read_command_reply(device, device->dial_string,
318 	device->state = UP;
319 	device->data_mode = true;
321 	device->media |= IFM_FULL_DUPLEX;
322 	device->flags |= IFF_LINK;
324 	device->link_quality = 1000;
327 		device->link_speed = atoi(&reply[8]);
330 		device->link_speed = 19200;
336 	close(device->fd);
337 	device->fd = -1;
338 	device->media = 0;
347 	dialup_device* device = (dialup_device*)_device;
349 	if (device->flags & IFF_LINK
350 		&& hangup(device) == B_OK)
351 		device->flags &= ~IFF_LINK;
353 	close(device->fd);
354 	device->fd = -1;
355 	device->media = 0;
363 	dialup_device* device = (dialup_device*)_device;
364 	return ioctl(device->fd, op, argument, length);
371 	dialup_device* device = (dialup_device*)_device;
373 	if (device->fd == -1)
415 	if (device->tx_flag_timeout
416 		&& system_time() - device->last_closing_flag_sequence_time
417 			> device->tx_flag_timeout) {
444 	bytesWritten = write(device->fd, packet, packetSize);
449 	device->last_closing_flag_sequence_time = system_time();
465 	dialup_device* device = (dialup_device*)_device;
467 	if (device->fd == -1)
484 		device->mtu + HDLC_HEADER_LENGTH, (void**)&data);
486 		dprintf("scattered I/O is not yet supported by dialup device.\n");
493 		bytesRead = read(device->fd, data, device->mtu + HDLC_HEADER_LENGTH);
501 		atomic_add((int32*)&device->stats.receive.dropped, 1);
521 	dialup_device* device = (dialup_device*)_device;
523 	device->mtu = mtu;
536 dialup_set_media(net_device* device, uint32 media)