1 /*****************************************************************************\
3 ** Linux Call Router **
5 **---------------------------------------------------------------------------**
6 ** Copyright: Andreas Eversberg **
8 ** mISDN port abstraction for dss1 **
10 \*****************************************************************************/
14 #include <mISDN/q931.h>
17 #ifdef __compiler_offsetof
18 #define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
20 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
24 #define container_of(ptr, type, member) ({ \
25 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
26 (type *)( (char *)__mptr - offsetof(type,member) );})
29 // timeouts if activating/deactivating response from mISDN got lost
30 #define B_TIMER_ACTIVATING 1 // seconds
31 #define B_TIMER_DEACTIVATING 1 // seconds
33 /* list of mISDN ports */
34 struct mISDNport *mISDNport_first;
36 /* noise randomizer */
37 unsigned char mISDN_rand[256];
38 int mISDN_rand_count = 0;
41 unsigned int mt_assign_pid = ~0;
45 static int upqueue_pipe[2];
46 static struct lcr_fd upqueue_fd;
47 int upqueue_avail = 0;
49 static int mISDN_upqueue(struct lcr_fd *fd, unsigned int what, void *instance, int i);
50 static int mISDN_timeout(struct lcr_timer *timer, void *instance, int i);
52 static int my_mISDNlib_debug(const char *file, int line, const char *func, int level, const char *fmt, va_list va)
57 ret = vfprintf(debug_fp, fmt, va);
61 static struct mi_ext_fn_s myfn;
63 int mISDN_initialize(void)
68 /* try to open raw socket to check kernel */
69 mISDNsocket = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE);
70 if (mISDNsocket < 0) {
71 fprintf(stderr, "Cannot open mISDN due to '%s'. (Does your Kernel support socket based mISDN? Protocol family is %d.)\n", strerror(errno), PF_ISDN);
76 // set debug printout function
77 myfn.prt_debug = my_mISDNlib_debug;
79 ver = init_layer3(4, &myfn); // buffer of 4
81 /* open debug, if enabled and not only stack debugging */
83 SPRINT(filename, "%s/debug.log", LOG_DIR);
84 debug_fp = fopen(filename, "a");
87 if (options.deb & DEBUG_STACK)
88 mISDN_set_debug_level(0xfffffeff);
90 mISDN_set_debug_level(0);
92 if (pipe(upqueue_pipe) < 0)
93 FATAL("Failed to open pipe\n");
94 memset(&upqueue_fd, 0, sizeof(upqueue_fd));
95 upqueue_fd.fd = upqueue_pipe[0];
96 register_fd(&upqueue_fd, LCR_FD_READ, mISDN_upqueue, NULL, 0);
101 void mISDN_deinitialize(void)
109 if (mISDNsocket > -1)
112 if (upqueue_fd.inuse) {
113 unregister_fd(&upqueue_fd);
114 close(upqueue_pipe[0]);
115 close(upqueue_pipe[1]);
120 int load_timer(struct lcr_timer *timer, void *instance, int index);
125 PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_settings *settings, struct interface *interface, int channel, int exclusive, int mode) : Port(type, portname, settings, interface)
127 p_m_mISDNport = mISDNport;
128 p_m_portnum = mISDNport->portnum;
135 p_m_tx_gain = mISDNport->ifport->interface->tx_gain;
136 p_m_rx_gain = mISDNport->ifport->interface->rx_gain;
142 p_m_preload = ISDN_LOAD;
143 p_m_disable_dejitter = 0;
147 p_m_inband_send_on = 0;
148 p_m_inband_receive_on = 0;
149 p_m_dtmf = !mISDNport->ifport->nodtmf;
150 memset(&p_m_timeout, 0, sizeof(p_m_timeout));
151 add_timer(&p_m_timeout, mISDN_timeout, this, 0);
152 SCPY(p_m_pipeline, mISDNport->ifport->interface->pipeline);
155 memset(&p_m_loadtimer, 0, sizeof(p_m_loadtimer));
156 add_timer(&p_m_loadtimer, load_timer, this, 0);
162 p_m_crypt_listen = 0;
163 p_m_crypt_msg_loops = 0;
164 p_m_crypt_msg_loops = 0;
165 p_m_crypt_msg_len = 0;
166 p_m_crypt_msg[0] = '\0';
167 p_m_crypt_msg_current = 0;
168 p_m_crypt_key_len = 0;
169 p_m_crypt_listen = 0;
170 p_m_crypt_listen_state = 0;
171 p_m_crypt_listen_len = 0;
172 p_m_crypt_listen_msg[0] = '\0';
173 p_m_crypt_listen_crc = 0;
174 if (mISDNport->ifport->interface->bf_len >= 4 && mISDNport->ifport->interface->bf_len <= 56) {
175 memcpy(p_m_crypt_key, mISDNport->ifport->interface->bf_key, p_m_crypt_key_len);
176 p_m_crypt_key_len = mISDNport->ifport->interface->bf_len;
180 /* if any channel requested by constructor */
181 if (channel == CHANNEL_ANY) {
182 /* reserve channel */
184 mISDNport->b_reserved++;
187 /* reserve channel */
188 if (channel > 0) // only if constructor was called with a channel resevation
189 seize_bchannel(channel, exclusive);
191 /* we increase the number of objects: */
193 PDEBUG(DEBUG_ISDN, "Created new mISDNPort(%s). Currently %d objects use, port #%d\n", portname, mISDNport->use, p_m_portnum);
194 //inband_receive_on();
203 struct lcr_msg *message;
205 del_timer(&p_m_timeout);
206 del_timer(&p_m_loadtimer);
208 /* remove bchannel relation */
212 while (p_epointlist) {
213 PDEBUG(DEBUG_ISDN, "destroy mISDNPort(%s). endpoint still exists, releaseing.\n", p_name);
214 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
215 message->param.disconnectinfo.cause = 16;
216 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
217 message_put(message);
218 /* remove from list */
219 free_epointlist(p_epointlist);
222 /* we decrease the number of objects: */
223 p_m_mISDNport->use--;
224 PDEBUG(DEBUG_ISDN, "destroyed mISDNPort(%s). Currently %d objects\n", p_name, p_m_mISDNport->use);
231 void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, const char *msgtext, int direction)
233 /* init trace with given values */
234 start_trace(mISDNport?mISDNport->portnum:-1,
235 (mISDNport)?((mISDNport->ifport)?mISDNport->ifport->interface:NULL):NULL,
236 port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype, options.national, options.international):NULL,
237 port?port->p_dialinginfo.id:NULL,
240 port?port->p_serial:0,
248 static struct isdn_message {
252 {"PH_ACTIVATE", L1_ACTIVATE_REQ},
253 {"PH_DEACTIVATE", L1_DEACTIVATE_REQ},
254 {"DL_ESTABLISH", L2_ESTABLISH_REQ},
255 {"DL_RELEASE", L2_RELEASE_REQ},
256 {"UNKNOWN", L3_UNKNOWN_REQ},
257 {"MT_TIMEOUT", L3_TIMEOUT_REQ},
258 {"MT_SETUP", L3_SETUP_REQ},
259 {"MT_SETUP_ACK", L3_SETUP_ACKNOWLEDGE_REQ},
260 {"MT_PROCEEDING", L3_PROCEEDING_REQ},
261 {"MT_ALERTING", L3_ALERTING_REQ},
262 {"MT_CONNECT", L3_CONNECT_REQ},
263 {"MT_CONNECT_ACK", L3_CONNECT_ACKNOWLEDGE_REQ},
264 {"MT_DISCONNECT", L3_DISCONNECT_REQ},
265 {"MT_RELEASE", L3_RELEASE_REQ},
266 {"MT_RELEASE_COMP", L3_RELEASE_COMPLETE_REQ},
267 {"MT_INFORMATION", L3_INFORMATION_REQ},
268 {"MT_PROGRESS", L3_PROGRESS_REQ},
269 {"MT_NOTIFY", L3_NOTIFY_REQ},
270 {"MT_SUSPEND", L3_SUSPEND_REQ},
271 {"MT_SUSPEND_ACK", L3_SUSPEND_ACKNOWLEDGE_REQ},
272 {"MT_SUSPEND_REJ", L3_SUSPEND_REJECT_REQ},
273 {"MT_RESUME", L3_RESUME_REQ},
274 {"MT_RESUME_ACK", L3_RESUME_ACKNOWLEDGE_REQ},
275 {"MT_RESUME_REJ", L3_RESUME_REJECT_REQ},
276 {"MT_HOLD", L3_HOLD_REQ},
277 {"MT_HOLD_ACK", L3_HOLD_ACKNOWLEDGE_REQ},
278 {"MT_HOLD_REJ", L3_HOLD_REJECT_REQ},
279 {"MT_RETRIEVE", L3_RETRIEVE_REQ},
280 {"MT_RETRIEVE_ACK", L3_RETRIEVE_ACKNOWLEDGE_REQ},
281 {"MT_RETRIEVE_REJ", L3_RETRIEVE_REJECT_REQ},
282 {"MT_FACILITY", L3_FACILITY_REQ},
283 {"MT_STATUS", L3_STATUS_REQ},
284 {"MT_RESTART", L3_RESTART_REQ},
285 {"MT_NEW_L3ID", L3_NEW_L3ID_REQ},
286 {"MT_RELEASE_L3ID", L3_RELEASE_L3ID_REQ},
289 static const char *isdn_prim[4] = {
295 void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned int msg, int direction)
300 SCPY(msgtext, "<<UNKNOWN MESSAGE>>");
301 /* select message and primitive text */
303 while(isdn_message[i].name) {
304 // if (msg == L3_NOTIFY_REQ) printf("val = %x %s\n", isdn_message[i].value, isdn_message[i].name);
305 if (isdn_message[i].value == (msg&0xffffff00)) {
306 SCPY(msgtext, isdn_message[i].name);
311 SCAT(msgtext, isdn_prim[msg&0x00000003]);
314 if (direction && (msg&0xffffff00)!=L3_NEW_L3ID_REQ && (msg&0xffffff00)!=L3_RELEASE_L3ID_REQ) {
316 if (mISDNport->ntmode) {
317 if (direction == DIRECTION_OUT)
318 SCAT(msgtext, " N->U");
320 SCAT(msgtext, " N<-U");
322 if (direction == DIRECTION_OUT)
323 SCAT(msgtext, " U->N");
325 SCAT(msgtext, " U<-N");
330 /* init trace with given values */
331 start_trace(mISDNport?mISDNport->portnum:-1,
332 mISDNport?(mISDNport->ifport?mISDNport->ifport->interface:NULL):NULL,
333 port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype, options.national, options.international):NULL,
334 port?port->p_dialinginfo.id:NULL,
337 port?port->p_serial:0,
343 * send control information to the channel (dsp-module)
345 void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, int sock, unsigned int c1, unsigned int c2, const char *trace_name, int trace_value)
347 unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+sizeof(int)];
348 struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
349 unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
355 ctrl->prim = PH_CONTROL_REQ;
359 ret = sendto(sock, buffer, MISDN_HEADER_LEN+sizeof(int)*2, 0, NULL, 0);
361 PERROR("Failed to send to socket %d\n", sock);
362 chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
363 if (c1 == DSP_CONF_JOIN)
364 add_trace(trace_name, NULL, "0x%08x", trace_value);
366 add_trace(trace_name, NULL, "%d", trace_value);
370 void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, int sock, unsigned int c1, void *c2, int c2_len, const char *trace_name, int trace_value)
372 unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+c2_len];
373 struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
374 unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
380 ctrl->prim = PH_CONTROL_REQ;
383 memcpy(d, c2, c2_len);
384 ret = sendto(sock, buffer, MISDN_HEADER_LEN+sizeof(int)+c2_len, 0, NULL, 0);
386 PERROR("Failed to send to socket %d\n", sock);
387 chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
388 add_trace(trace_name, NULL, "%d", trace_value);
392 static int b_sock_callback(struct lcr_fd *fd, unsigned int what, void *instance, int i);
395 * subfunction for bchannel_event
398 static int _bchannel_create(struct mISDNport *mISDNport, int i)
401 struct sockaddr_mISDN addr;
403 if (mISDNport->b_sock[i].inuse) {
404 PERROR("Error: Socket already created for index %d\n", i);
409 //#warning testing without DSP
410 // mISDNport->b_sock[i].fd = socket(PF_ISDN, SOCK_DGRAM, (mISDNport->b_mode[i]==B_MODE_HDLC)?ISDN_P_B_HDLC:ISDN_P_B_RAW);
411 mISDNport->b_sock[i].fd = socket(PF_ISDN, SOCK_DGRAM, (mISDNport->b_mode[i]==B_MODE_HDLC)?ISDN_P_B_L2DSPHDLC:ISDN_P_B_L2DSP);
412 if (mISDNport->b_sock[i].fd < 0) {
413 PERROR("Error: Failed to open bchannel-socket for index %d with mISDN-DSP layer. Did you load mISDN_dsp.ko?\n", i);
417 /* register callback for read */
418 register_fd(&mISDNport->b_sock[i], LCR_FD_READ, b_sock_callback, mISDNport, i);
420 /* bind socket to bchannel */
421 addr.family = AF_ISDN;
422 addr.dev = mISDNport->portnum;
423 addr.channel = i+1+(i>=15);
424 ret = bind(mISDNport->b_sock[i].fd, (struct sockaddr *)&addr, sizeof(addr));
426 PERROR("Error: Failed to bind bchannel-socket for index %d with mISDN-DSP layer (errno=%d). Did you load mISDN_dsp.ko?\n", i, errno);
427 close(mISDNport->b_sock[i].fd);
428 unregister_fd(&mISDNport->b_sock[i]);
432 chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL create socket", DIRECTION_OUT);
433 add_trace("channel", NULL, "%d", i+1+(i>=15));
434 add_trace("socket", NULL, "%d", mISDNport->b_sock[i].fd);
442 * subfunction for bchannel_event
443 * activate / deactivate request
445 static void _bchannel_activate(struct mISDNport *mISDNport, int i, int activate, int timeout)
447 struct mISDNhead act;
450 if (!mISDNport->b_sock[i].inuse)
452 act.prim = (activate)?PH_ACTIVATE_REQ:PH_DEACTIVATE_REQ;
454 ret = sendto(mISDNport->b_sock[i].fd, &act, MISDN_HEADER_LEN, 0, NULL, 0);
456 PERROR("Failed to send to socket %d\n", mISDNport->b_sock[i].fd);
459 chan_trace_header(mISDNport, mISDNport->b_port[i], activate ? "BCHANNEL activate" : "BCHANNEL deactivate", DIRECTION_OUT);
460 add_trace("channel", NULL, "%d", i+1+(i>=15));
462 add_trace("event", NULL, "timeout recovery");
468 * subfunction for bchannel_event
471 static void _bchannel_configure(struct mISDNport *mISDNport, int i)
476 if (!mISDNport->b_sock[i].inuse)
478 handle = mISDNport->b_sock[i].fd;
479 port = mISDNport->b_port[i];
480 mode = mISDNport->b_mode[i];
482 PERROR("bchannel index i=%d not associated with a port object\n", i);
486 /* set dsp features */
487 if (port->p_m_txdata)
488 ph_control(mISDNport, port, handle, (port->p_m_txdata)?DSP_TXDATA_ON:DSP_TXDATA_OFF, 0, "DSP-TXDATA", port->p_m_txdata);
489 if (port->p_m_delay && mode == B_MODE_TRANSPARENT)
490 ph_control(mISDNport, port, handle, DSP_DELAY, port->p_m_delay, "DSP-DELAY", port->p_m_delay);
491 if (port->p_m_tx_dejitter && mode == B_MODE_TRANSPARENT)
492 ph_control(mISDNport, port, handle, DSP_TX_DEJITTER, port->p_m_tx_dejitter, "DSP-TX_DEJITTER", port->p_m_tx_dejitter);
493 if (port->p_m_tx_gain && mode == B_MODE_TRANSPARENT)
494 ph_control(mISDNport, port, handle, DSP_VOL_CHANGE_TX, port->p_m_tx_gain, "DSP-TX_GAIN", port->p_m_tx_gain);
495 if (port->p_m_rx_gain && mode == B_MODE_TRANSPARENT)
496 ph_control(mISDNport, port, handle, DSP_VOL_CHANGE_RX, port->p_m_rx_gain, "DSP-RX_GAIN", port->p_m_rx_gain);
497 if (port->p_m_pipeline[0] && mode == B_MODE_TRANSPARENT)
498 ph_control_block(mISDNport, port, handle, DSP_PIPELINE_CFG, port->p_m_pipeline, strlen(port->p_m_pipeline)+1, "DSP-PIPELINE", 0);
499 if (port->p_m_conf && !port->p_m_mute)
500 ph_control(mISDNport, port, handle, DSP_CONF_JOIN, port->p_m_conf, "DSP-CONF", port->p_m_conf);
502 ph_control(mISDNport, port, handle, DSP_ECHO_ON, 0, "DSP-ECHO", 1);
503 if (port->p_m_tone && mode == B_MODE_TRANSPARENT)
504 ph_control(mISDNport, port, handle, DSP_TONE_PATT_ON, port->p_m_tone, "DSP-TONE", port->p_m_tone);
506 ph_control(mISDNport, port, handle, DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
507 // if (port->p_m_txmix && mode == B_MODE_TRANSPARENT)
508 // ph_control(mISDNport, port, handle, DSP_MIX_ON, 0, "DSP-MIX", 1);
509 if (port->p_m_dtmf && mode == B_MODE_TRANSPARENT)
510 ph_control(mISDNport, port, handle, DTMF_TONE_START, 0, "DSP-DTMF", 1);
511 if (port->p_m_crypt && mode == B_MODE_TRANSPARENT)
512 ph_control_block(mISDNport, port, handle, DSP_BF_ENABLE_KEY, port->p_m_crypt_key, port->p_m_crypt_key_len, "DSP-CRYPT", port->p_m_crypt_key_len);
516 void PmISDN::set_conf(int oldconf, int newconf)
518 if (oldconf != newconf) {
519 PDEBUG(DEBUG_BCHANNEL, "we change conference from conf=%d to conf=%d.\n", oldconf, newconf);
520 if (p_m_b_index > -1)
521 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
522 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, (newconf)?DSP_CONF_JOIN:DSP_CONF_SPLIT, newconf, "DSP-CONF", newconf);
524 PDEBUG(DEBUG_BCHANNEL, "we already have conf=%d.\n", newconf);
529 * subfunction for bchannel_event
532 static void _bchannel_destroy(struct mISDNport *mISDNport, int i)
534 if (!mISDNport->b_sock[i].inuse)
536 chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL remove socket", DIRECTION_OUT);
537 add_trace("channel", NULL, "%d", i+1+(i>=15));
538 add_trace("socket", NULL, "%d", mISDNport->b_sock[i].fd);
540 close(mISDNport->b_sock[i].fd);
541 unregister_fd(&mISDNport->b_sock[i]);
549 A bchannel goes through the following states in this order:
552 No one is using the bchannel.
553 It is available and not linked to Port class, nor reserved.
556 The bchannel stack is created and an activation request is sent.
557 It MAY be linked to Port class, but already unlinked due to Port class removal.
560 The bchannel is active and cofigured to the Port class needs.
561 Also it is linked to a Port class, otherwhise it would be deactivated.
563 - B_STATE_DEACTIVATING
564 The bchannel is in deactivating state, due to deactivation request.
565 It may be linked to a Port class, that likes to reactivate it.
569 After deactivating bchannel, and if not used, the bchannel becomes idle again.
571 A bchannel can have the following events:
574 A bchannel is required by a Port class.
577 The bchannel beomes active.
580 The bchannel is not required by Port class anymore
582 - B_EVENT_DEACTIVATED
583 The bchannel becomes inactive.
585 All actions taken on these events depend on the current bchannel's state and if it is linked to a Port class.
590 * process bchannel events
591 * - mISDNport is a pointer to the port's structure
592 * - i is the index of the bchannel
593 * - event is the B_EVENT_* value
594 * - port is the PmISDN class pointer
596 void bchannel_event(struct mISDNport *mISDNport, int i, int event)
598 class PmISDN *b_port = mISDNport->b_port[i];
599 int state = mISDNport->b_state[i];
600 int timer = -1; // no change
603 char *p_m_pipeline = NULL;
604 unsigned char *p_m_crypt_key = NULL;
605 int p_m_crypt_key_len = 0;
606 int p_m_crypt_key_type = 0;
609 p_m_tx_gain = b_port->p_m_tx_gain;
610 p_m_rx_gain = b_port->p_m_rx_gain;
611 p_m_pipeline = b_port->p_m_pipeline;
612 p_m_crypt_key = b_port->p_m_crypt_key;
613 p_m_crypt_key_len = b_port->p_m_crypt_key_len;
614 p_m_crypt_key_type = /*b_port->p_m_crypt_key_type*/1;
619 /* port must be linked in order to allow activation */
621 FATAL("bchannel must be linked to a Port class\n");
624 /* create stack and send activation request */
625 if (_bchannel_create(mISDNport, i)) {
626 _bchannel_activate(mISDNport, i, 1, 0);
627 state = B_STATE_ACTIVATING;
628 timer = B_TIMER_ACTIVATING;
632 case B_STATE_ACTIVATING:
633 /* do nothing, because it is already activating */
637 /* problems that might ocurr:
638 * B_EVENT_USE is received when channel already in use.
640 PERROR("Illegal event %d at state %d, please correct.\n", event, state);
645 case B_EVENT_ACTIVATED:
648 case B_STATE_ACTIVATING:
650 /* bchannel is active and used by Port class, so we configure bchannel */
651 _bchannel_configure(mISDNport, i);
652 state = B_STATE_ACTIVE;
653 b_port->p_m_load = 0;
654 b_port->update_load();
656 /* bchannel is active, but not used anymore (or has wrong stack config), so we deactivate */
657 _bchannel_activate(mISDNport, i, 0, 0);
658 state = B_STATE_DEACTIVATING;
659 timer = B_TIMER_DEACTIVATING;
664 PERROR("Illegal event %d at state %d, please correct.\n", event, state);
670 FATAL("bchannel must be linked to a Port class\n");
673 /* bchannel is idle due to an error, so we do nothing */
676 case B_STATE_ACTIVATING:
677 /* do nothing because we must wait until bchanenl is active before deactivating */
681 /* bchannel is active, so we deactivate */
682 _bchannel_activate(mISDNport, i, 0, 0);
683 state = B_STATE_DEACTIVATING;
684 timer = B_TIMER_DEACTIVATING;
687 case B_STATE_DEACTIVATING:
688 /* we may have taken an already deactivating bchannel, but do not require it anymore, so we do nothing */
692 PERROR("Illegal event %d at state %d, please correct.\n", event, state);
696 case B_EVENT_DEACTIVATED:
700 /* ignore due to deactivation confirm after unloading */
703 case B_STATE_DEACTIVATING:
704 _bchannel_destroy(mISDNport, i);
705 state = B_STATE_IDLE;
707 /* bchannel is now deactivate, but is requied by Port class, so we reactivate */
708 if (_bchannel_create(mISDNport, i)) {
709 _bchannel_activate(mISDNport, i, 1, 0);
710 state = B_STATE_ACTIVATING;
711 timer = B_TIMER_ACTIVATING;
717 PERROR("Illegal event %d at state %d, please correct.\n", event, state);
721 case B_EVENT_TIMEOUT:
725 /* ignore due to deactivation confirm after unloading */
728 case B_STATE_ACTIVATING:
729 _bchannel_activate(mISDNport, i, 1, 1);
730 timer = B_TIMER_ACTIVATING;
733 case B_STATE_DEACTIVATING:
734 _bchannel_activate(mISDNport, i, 0, 1);
735 timer = B_TIMER_DEACTIVATING;
739 PERROR("Illegal event %d at state %d, please correct.\n", event, state);
744 PERROR("Illegal event %d, please correct.\n", event);
747 mISDNport->b_state[i] = state;
749 unsched_timer(&mISDNport->b_timer[i]);
751 schedule_timer(&mISDNport->b_timer[i], timer, 0);
758 * check for available channel and reserve+set it.
759 * give channel number or SEL_CHANNEL_ANY or SEL_CHANNEL_NO
761 * returns -(cause value) or x = channel x or 0 = no channel
762 * NOTE: no activation is done here
764 int PmISDN::seize_bchannel(int channel, int exclusive)
768 /* the channel is what we have */
769 if (p_m_b_channel == channel)
772 /* if channel already in use, release it */
777 if (channel==CHANNEL_NO || channel==0)
780 /* is channel in range ? */
782 || (channel>p_m_mISDNport->b_num && channel<16)
783 || ((channel-1)>p_m_mISDNport->b_num && channel>16)) /* channel-1 because channel 16 is not counted */
784 return(-6); /* channel unacceptable */
786 /* request exclusive channel */
787 if (exclusive && channel>0) {
788 i = channel-1-(channel>16);
789 if (p_m_mISDNport->b_port[i])
790 return(-44); /* requested channel not available */
794 /* ask for channel */
796 i = channel-1-(channel>16);
797 if (p_m_mISDNport->b_port[i] == NULL)
801 /* search for channel */
803 while(i < p_m_mISDNport->b_num) {
804 if (!p_m_mISDNport->b_port[i]) {
805 channel = i+1+(i>=15);
810 return(-34); /* no free channel */
813 PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) seizing bchannel %d (index %d)\n", p_name, channel, i);
815 /* link Port, set parameters */
816 p_m_mISDNport->b_port[i] = this;
818 p_m_b_channel = channel;
819 p_m_b_exclusive = exclusive;
820 p_m_mISDNport->b_mode[i] = p_m_b_mode;
822 /* reserve channel */
823 if (!p_m_b_reserve) {
825 p_m_mISDNport->b_reserved++;
832 * drop reserved channel and unset it.
833 * deactivation is also done
835 void PmISDN::drop_bchannel(void)
837 /* unreserve channel */
839 p_m_mISDNport->b_reserved--;
848 PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) dropping bchannel\n", p_name);
850 if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_IDLE)
851 bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_DROP);
852 p_m_mISDNport->b_port[p_m_b_index] = NULL;
853 p_m_mISDNport->b_mode[p_m_b_index] = 0;
863 audio transmission procedure:
864 -----------------------------
867 three sources of audio transmission:
868 - crypto-data high priority
869 - tones high priority (also high)
870 - remote-data low priority
873 a variable that temporarily shows the number of samples elapsed since last transmission process.
874 p_m_last_tv_* is used to store that last timestamp. this is used to calculate the time elapsed.
877 a variable that is increased whenever data is transmitted.
878 it is decreased while time elapses. it stores the number of samples that
879 are currently loaded to dsp module.
880 since clock in dsp module is the same clock for user space process, these
884 there are two levels:
885 p_m_preload will give the load that have to be kept in dsp.
886 ISDN_MAXLOAD (2*p_m_preload) will give the maximum load before dropping.
888 * procedure for low priority data
889 see txfromup() for procedure
890 in short: remote data is ignored during high priority tones
892 * procedure for high priority data
893 whenever load is below p_m_preload, load is filled up to p_m_preload
894 if no more data is available, load becomes empty again.
897 0 p_m_preload ISDN_MAXLOAD
898 +--------------------+----------------------+
900 +--------------------+----------------------+
902 on empty load or on load below p_m_preload, the load is inceased to p_m_preload:
903 0 p_m_preload ISDN_MAXLOAD
904 +--------------------+----------------------+
905 |TTTTTTTTTTTTTTTTTTTT| |
906 +--------------------+----------------------+
908 on empty load, remote-audio causes the load with the remote audio to be increased to p_m_preload.
909 0 p_m_preload ISDN_MAXLOAD
910 +--------------------+----------------------+
911 |TTTTTTTTTTTTTTTTTTTTRRRRR |
912 +--------------------+----------------------+
915 void PmISDN::update_load(void)
917 /* don't trigger load event if event already active */
918 if (p_m_loadtimer.active)
921 schedule_timer(&p_m_loadtimer, 0, 0); /* no delay the first time */
924 int load_timer(struct lcr_timer *timer, void *instance, int index)
926 class PmISDN *isdnport = (class PmISDN *)instance;
933 void PmISDN::load_tx(void)
937 struct timeval current_time;
940 gettimeofday(¤t_time, NULL);
941 if (p_m_last_tv_sec) {
942 elapsed = 8000 * (current_time.tv_sec - p_m_last_tv_sec)
943 + 8 * (current_time.tv_usec/1000 - p_m_last_tv_msec);
945 /* set clock of last process! */
946 p_m_last_tv_sec = current_time.tv_sec;
947 p_m_last_tv_msec = current_time.tv_usec/1000;
949 /* process only if we have samples and we are active */
950 if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_ACTIVE)
955 if (elapsed < p_m_load)
960 /* to send data, tone must be on */
961 if ((p_tone_name[0] || p_m_crypt_msg_loops || p_m_inband_send_on) /* what tones? */
962 && (p_m_load < p_m_preload) /* not too much load? */
963 && (p_state==PORT_STATE_CONNECT || p_m_mISDNport->tones || p_m_inband_send_on)) { /* connected or inband-tones? */
964 int tosend = p_m_preload - p_m_load, length;
965 unsigned char buf[MISDN_HEADER_LEN+tosend];
966 struct mISDNhead *frm = (struct mISDNhead *)buf;
967 unsigned char *p = buf+MISDN_HEADER_LEN;
969 /* copy inband signalling (e.g. used by ss5) */
970 if (p_m_inband_send_on && tosend) {
971 tosend -= inband_send(p, tosend);
974 /* copy crypto loops */
975 while (p_m_crypt_msg_loops && tosend) {
976 /* how much do we have to send */
977 length = p_m_crypt_msg_len - p_m_crypt_msg_current;
983 /* copy message (part) to buffer */
984 memcpy(p, p_m_crypt_msg+p_m_crypt_msg_current, length);
987 p_m_crypt_msg_current += length;
988 if (p_m_crypt_msg_current == p_m_crypt_msg_len) {
990 p_m_crypt_msg_current = 0;
991 p_m_crypt_msg_loops--;
992 if (!p_m_crypt_msg_loops)
994 // puts("eine loop weniger");
1002 if (p_tone_name[0] && tosend) {
1003 tosend -= read_audio(p, tosend);
1007 if (p_m_preload - p_m_load - tosend > 0) {
1008 frm->prim = PH_DATA_REQ;
1010 ret = sendto(p_m_mISDNport->b_sock[p_m_b_index].fd, buf, MISDN_HEADER_LEN+p_m_preload-p_m_load-tosend, 0, NULL, 0);
1012 PERROR("Failed to send to socket %d (samples = %d)\n", p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_preload-p_m_load-tosend);
1013 p_m_load += p_m_preload - p_m_load - tosend;
1018 schedule_timer(&p_m_loadtimer, 0, PORT_TRANSMIT * 125);
1021 /* handle timeouts */
1022 static int mISDN_timeout(struct lcr_timer *timer, void *instance, int i)
1024 class PmISDN *isdnport = (class PmISDN *)instance;
1025 struct lcr_msg *message;
1027 PDEBUG(DEBUG_ISDN, "(%s) timeout after %d seconds detected (state=%d).\n", isdnport->p_name, isdnport->p_m_timeout.timeout.tv_sec, isdnport->p_state);
1028 /* send timeout to endpoint */
1029 message = message_create(isdnport->p_serial, ACTIVE_EPOINT(isdnport->p_epointlist), PORT_TO_EPOINT, MESSAGE_TIMEOUT);
1030 message->param.state = isdnport->p_state;
1031 message_put(message);
1038 * whenever we get audio data from bchannel, we process it here
1040 void PmISDN::bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len)
1042 unsigned int cont = *((unsigned int *)data);
1043 struct lcr_msg *message;
1047 if (hh->prim == PH_CONTROL_IND) {
1049 PERROR("SHORT READ OF PH_CONTROL INDICATION\n");
1052 if ((cont&(~DTMF_TONE_MASK)) == DTMF_TONE_VAL) {
1053 chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
1054 add_trace("DTMF", NULL, "%c", cont & DTMF_TONE_MASK);
1056 add_trace("info", NULL, "DTMF is disabled");
1060 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DTMF);
1061 message->param.dtmf = cont & DTMF_TONE_MASK;
1062 PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION DTMF digit '%c'\n", p_name, message->param.dtmf);
1063 message_put(message);
1068 chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
1069 add_trace("DSP-CRYPT", NULL, "error");
1071 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CRYPT);
1072 message->param.crypt.type = CC_ERROR_IND;
1073 PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION reject of blowfish.\n", p_name);
1074 message_put(message);
1078 chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
1079 add_trace("DSP-CRYPT", NULL, "ok");
1081 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CRYPT);
1082 message->param.crypt.type = CC_ACTBF_CONF;
1083 PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION accept of blowfish.\n", p_name);
1084 message_put(message);
1088 chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
1089 add_trace("unknown", NULL, "0x%x", cont);
1094 if (hh->prim == PH_CONTROL_IND) {
1097 chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
1098 add_trace("unknown", NULL, "0x%x", hh->id);
1103 if (hh->prim == PH_DATA_REQ || hh->prim == DL_DATA_REQ) {
1105 /* if tx is off, it may happen that fifos send us pending informations, we just ignore them */
1106 PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) ignoring tx data, because 'txdata' is turned off\n", p_name);
1109 /* see below (same condition) */
1110 if (p_state!=PORT_STATE_CONNECT
1111 && !p_m_mISDNport->tones)
1113 // printf(".");fflush(stdout);return;
1115 record(data, len, 1); // from up
1118 if (hh->prim != PH_DATA_IND && hh->prim != DL_DATA_IND) {
1119 PERROR("Bchannel received unknown primitve: 0x%x\n", hh->prim);
1123 /* inband is processed */
1124 if (p_m_inband_receive_on)
1125 inband_receive(data, len);
1127 /* send to remote, if bridged */
1128 bridge_tx(data, len);
1130 /* calls will not process any audio data unless
1131 * the call is connected OR tones feature is enabled.
1133 #ifndef DEBUG_COREBRIDGE
1134 if (p_state!=PORT_STATE_CONNECT
1135 && !p_m_mISDNport->tones)
1140 /* the bearer capability must be audio in order to send and receive
1141 * audio prior or after connect.
1143 if (!(p_bearerinfo.capability&CLASS_CAPABILITY_AUDIO) && p_state!=PORT_STATE_CONNECT)
1147 /* if rx is off, it may happen that fifos send us pending informations, we just ignore them */
1149 PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) ignoring data, because rx is turned off\n", p_name);
1155 record(data, len, 0); // from down
1157 /* randomize and listen to crypt message if enabled */
1158 if (p_m_crypt_listen) {
1159 /* the noisy randomizer */
1163 mISDN_rand[mISDN_rand_count & 0xff] += *p++;
1165 cryptman_listen_bch(data, len);
1173 void PmISDN::set_echotest(int echo)
1175 if (p_m_echo != echo) {
1177 PDEBUG(DEBUG_ISDN, "we set echo to echo=%d.\n", p_m_echo);
1179 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
1180 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_echo?DSP_ECHO_ON:DSP_ECHO_OFF, 0, "DSP-ECHO", p_m_echo);
1187 void PmISDN::set_tone(const char *dir, const char *tone)
1192 /* if no directory is given (by extension), we use interface.conf or options.conf */
1193 if (!dir || !dir[0]) {
1194 if (p_m_mISDNport->ifport->tones_dir[0])
1195 dir = p_m_mISDNport->ifport->tones_dir;
1196 else if (options.tones_dir[0])
1197 dir = options.tones_dir;
1202 PDEBUG(DEBUG_ISDN, "isdn port now plays tone:'%s'.\n", tone);
1208 /* check for dsp tones */
1209 if (!strcmp(dir, "american"))
1211 if (!strcmp(dir, "german"))
1213 if (!strcmp(dir, "oldgerman"))
1214 dsp = DSP_OLDGERMAN;
1216 /* check if we NOT really have to use a dsp-tone */
1217 if (dsp == DSP_NONE) {
1220 if (p_m_b_index > -1)
1221 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT) {
1222 PDEBUG(DEBUG_ISDN, "we reset tone from id=%d to OFF.\n", p_m_tone);
1223 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_TONE_PATT_OFF, 0, "DSP-TONE", 0);
1226 Port::set_tone(dir, tone);
1230 /* now we USE dsp-tone, convert name */
1231 if (!strcmp(tone, "dialtone")) {
1233 case DSP_AMERICAN: id = TONE_AMERICAN_DIALTONE; break;
1234 case DSP_GERMAN: id = TONE_GERMAN_DIALTONE; break;
1235 case DSP_OLDGERMAN: id = TONE_GERMAN_OLDDIALTONE; break;
1237 } else if (!strcmp(tone, "dialpbx")) {
1239 case DSP_AMERICAN: id = TONE_AMERICAN_DIALPBX; break;
1240 case DSP_GERMAN: id = TONE_GERMAN_DIALPBX; break;
1241 case DSP_OLDGERMAN: id = TONE_GERMAN_OLDDIALPBX; break;
1243 } else if (!strcmp(tone, "ringing")) {
1245 case DSP_AMERICAN: id = TONE_AMERICAN_RINGING; break;
1246 case DSP_GERMAN: id = TONE_GERMAN_RINGING; break;
1247 case DSP_OLDGERMAN: id = TONE_GERMAN_OLDRINGING; break;
1249 } else if (!strcmp(tone, "ringpbx")) {
1251 case DSP_AMERICAN: id = TONE_AMERICAN_RINGPBX; break;
1252 case DSP_GERMAN: id = TONE_GERMAN_RINGPBX; break;
1253 case DSP_OLDGERMAN: id = TONE_GERMAN_OLDRINGPBX; break;
1255 } else if (!strcmp(tone, "busy")) {
1258 case DSP_AMERICAN: id = TONE_AMERICAN_BUSY; break;
1259 case DSP_GERMAN: id = TONE_GERMAN_BUSY; break;
1260 case DSP_OLDGERMAN: id = TONE_GERMAN_OLDBUSY; break;
1262 } else if (!strcmp(tone, "release")) {
1265 case DSP_AMERICAN: id = TONE_AMERICAN_HANGUP; break;
1266 case DSP_GERMAN: id = TONE_GERMAN_HANGUP; break;
1267 case DSP_OLDGERMAN: id = TONE_GERMAN_OLDHANGUP; break;
1269 } else if (!strcmp(tone, "cause_10"))
1271 else if (!strcmp(tone, "cause_11"))
1273 else if (!strcmp(tone, "cause_22")) {
1275 case DSP_AMERICAN: id = TONE_SPECIAL_INFO; break;
1276 case DSP_GERMAN: id = TONE_GERMAN_GASSENBESETZT; break;
1277 case DSP_OLDGERMAN: id = TONE_GERMAN_OLDBUSY; break;
1279 } else if (!strncmp(tone, "cause_", 6))
1280 id = TONE_SPECIAL_INFO;
1284 /* if we have a tone that is not supported by dsp */
1285 if (id==TONE_OFF && tone[0])
1289 if (p_m_tone != id) {
1292 PDEBUG(DEBUG_ISDN, "we set tone to id=%d.\n", p_m_tone);
1293 if (p_m_b_index > -1)
1294 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
1295 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_tone?DSP_TONE_PATT_ON:DSP_TONE_PATT_OFF, p_m_tone, "DSP-TONE", p_m_tone);
1297 /* turn user-space tones off in cases of no tone OR dsp tone */
1298 Port::set_tone("",NULL);
1302 /* MESSAGE_mISDNSIGNAL */
1303 //extern struct lcr_msg *dddebug;
1304 void PmISDN::message_mISDNsignal(unsigned int epoint_id, int message_id, union parameter *param)
1306 int oldconf, newconf;
1307 switch(param->mISDNsignal.message) {
1308 case mISDNSIGNAL_VOLUME:
1309 if (p_m_tx_gain != param->mISDNsignal.tx_gain) {
1310 p_m_tx_gain = param->mISDNsignal.tx_gain;
1311 PDEBUG(DEBUG_BCHANNEL, "we change tx-volume to shift=%d.\n", p_m_tx_gain);
1312 if (p_m_b_index > -1)
1313 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
1314 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_VOL_CHANGE_TX, p_m_tx_gain, "DSP-TX_GAIN", p_m_tx_gain);
1316 PDEBUG(DEBUG_BCHANNEL, "we already have tx-volume shift=%d.\n", p_m_rx_gain);
1317 if (p_m_rx_gain != param->mISDNsignal.rx_gain) {
1318 p_m_rx_gain = param->mISDNsignal.rx_gain;
1319 PDEBUG(DEBUG_BCHANNEL, "we change rx-volume to shift=%d.\n", p_m_rx_gain);
1320 if (p_m_b_index > -1)
1321 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
1322 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_VOL_CHANGE_RX, p_m_rx_gain, "DSP-RX_GAIN", p_m_rx_gain);
1324 PDEBUG(DEBUG_BCHANNEL, "we already have rx-volume shift=%d.\n", p_m_rx_gain);
1327 case mISDNSIGNAL_CONF:
1328 oldconf = p_m_mute?0:p_m_conf;
1329 p_m_conf = param->mISDNsignal.conf;
1330 newconf = p_m_mute?0:p_m_conf;
1331 set_conf(oldconf, newconf);
1334 case mISDNSIGNAL_DELAY:
1335 if (p_m_delay != param->mISDNsignal.delay) {
1336 p_m_delay = param->mISDNsignal.delay;
1337 PDEBUG(DEBUG_BCHANNEL, "we change delay mode to delay=%d.\n", p_m_delay);
1338 if (p_m_b_index > -1)
1339 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
1340 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_delay?DSP_DELAY:DSP_JITTER, p_m_delay, "DSP-DELAY", p_m_delay);
1342 PDEBUG(DEBUG_BCHANNEL, "we already have delay=%d.\n", p_m_delay);
1346 PERROR("PmISDN(%s) unsupported signal message %d.\n", p_name, param->mISDNsignal.message);
1351 void PmISDN::message_crypt(unsigned int epoint_id, int message_id, union parameter *param)
1353 struct lcr_msg *message;
1355 switch(param->crypt.type) {
1356 case CC_ACTBF_REQ: /* activate blowfish */
1358 p_m_crypt_key_len = param->crypt.len;
1359 if (p_m_crypt_key_len > (int)sizeof(p_m_crypt_key)) {
1360 PERROR("PmISDN(%s) key too long %d > %d\n", p_name, p_m_crypt_key_len, sizeof(p_m_crypt_key));
1361 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CRYPT);
1362 message->param.crypt.type = CC_ERROR_IND;
1363 message_put(message);
1366 memcpy(p_m_crypt_key, param->crypt.data, p_m_crypt_key_len);
1368 PDEBUG(DEBUG_BCHANNEL, "we set encryption to crypt=%d. (0 means OFF)\n", p_m_crypt);
1369 if (p_m_b_index > -1)
1370 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
1371 ph_control_block(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_crypt?DSP_BF_ENABLE_KEY:DSP_BF_DISABLE, p_m_crypt_key, p_m_crypt_key_len, "DSP-CRYPT", p_m_crypt_key_len);
1374 case CC_DACT_REQ: /* deactivate session encryption */
1379 case CR_LISTEN_REQ: /* start listening to messages */
1380 p_m_crypt_listen = 1;
1382 p_m_crypt_listen_state = 0;
1385 case CR_UNLISTEN_REQ: /* stop listening to messages */
1386 p_m_crypt_listen = 0;
1390 case CR_MESSAGE_REQ: /* send message */
1391 p_m_crypt_msg_len = cryptman_encode_bch(param->crypt.data, param->crypt.len, p_m_crypt_msg, sizeof(p_m_crypt_msg));
1392 if (!p_m_crypt_msg_len) {
1393 PERROR("PmISDN(%s) message too long %d > %d\n", p_name, param->crypt.len-1, sizeof(p_m_crypt_msg));
1396 p_m_crypt_msg_current = 0; /* reset */
1397 p_m_crypt_msg_loops = 6; /* enable */
1400 /* disable txmix, or we get corrupt data due to audio process */
1401 if (p_m_txmix && p_m_b_index>=0 && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT) {
1402 PDEBUG(DEBUG_BCHANNEL, "for sending CR_MESSAGE_REQ, we reset txmix from txmix=%d.\n", p_m_txmix);
1403 ph_control(p_m_mISDNport, this, p_mISDNport->b_sock[p_m_b_index].fd, DSP_MIX_OFF, 0, "DSP-TXMIX", 0);
1409 PERROR("PmISDN(%s) unknown crypt message %d\n", p_name, param->crypt.type);
1415 * endpoint sends messages to the port
1417 int PmISDN::message_epoint(unsigned int epoint_id, int message_id, union parameter *param)
1419 if (Port::message_epoint(epoint_id, message_id, param)) {
1420 if (message_id == MESSAGE_BRIDGE)
1425 switch(message_id) {
1426 case MESSAGE_mISDNSIGNAL: /* user command */
1427 PDEBUG(DEBUG_ISDN, "PmISDN(%s) received special ISDN SIGNAL %d.\n", p_name, param->mISDNsignal.message);
1428 message_mISDNsignal(epoint_id, message_id, param);
1431 case MESSAGE_CRYPT: /* crypt control command */
1432 PDEBUG(DEBUG_ISDN, "PmISDN(%s) received encryption command '%d'.\n", p_name, param->crypt.type);
1433 message_crypt(epoint_id, message_id, param);
1436 case MESSAGE_DISABLE_DEJITTER:
1437 PDEBUG(DEBUG_ISDN, "PmISDN(%s) received de-jitter disable order.\n", p_name);
1438 p_m_disable_dejitter = 1;
1439 p_m_preload = param->queue;
1447 void PmISDN::update_rxoff(void)
1449 int tx_dejitter = 0;
1451 /* call bridges in user space OR crypto OR recording */
1452 if (p_bridge || p_m_crypt_msg_loops || p_m_crypt_listen || p_record || p_m_inband_receive_on) {
1453 /* rx IS required */
1457 PDEBUG(DEBUG_BCHANNEL, "%s: receive data is required, so we turn them on\n", __FUNCTION__);
1458 if (p_m_b_index > -1)
1459 if (p_m_mISDNport->b_port[p_m_b_index] && p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
1460 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_RECEIVE_ON, 0, "DSP-RXOFF", 0);
1463 /* rx NOT required */
1467 PDEBUG(DEBUG_BCHANNEL, "%s: receive data is not required, so we turn them off\n", __FUNCTION__);
1468 if (p_m_b_index > -1)
1469 if (p_m_mISDNport->b_port[p_m_b_index] && p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
1470 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
1475 /* txdata IS required */
1479 PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is required, so we turn them on\n", __FUNCTION__);
1480 if (p_m_b_index > -1)
1481 if (p_m_mISDNport->b_port[p_m_b_index] && p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
1482 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_TXDATA_ON, 0, "DSP-TXDATA", 1);
1485 /* txdata NOT required */
1489 PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is not required, so we turn them off\n", __FUNCTION__);
1490 if (p_m_b_index > -1)
1491 if (p_m_mISDNport->b_port[p_m_b_index] && p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
1492 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_TXDATA_OFF, 0, "DSP-TXDATA", 0);
1495 /* dejitter on bridge */
1496 if (p_bridge && !p_m_disable_dejitter)
1498 if (p_m_tx_dejitter != tx_dejitter) {
1499 p_m_tx_dejitter = tx_dejitter;
1500 PDEBUG(DEBUG_BCHANNEL, "we change dejitter mode to %s.\n", (p_m_tx_dejitter) ? "on" : "off");
1501 if (p_m_b_index > -1)
1502 if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
1503 ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_TX_DEJITTER, p_m_tx_dejitter, "DSP-TX_DEJITTER", p_m_tx_dejitter);
1507 static int mISDN_upqueue(struct lcr_fd *fd, unsigned int what, void *instance, int i)
1509 struct mISDNport *mISDNport;
1515 /* unset global semaphore */
1517 // with a very small incident, upqueue_avail may be set by mISDN thread and
1518 // another byte may be sent to the pipe, which causes a call to this function
1519 // again with nothing in the upqueue. this is no problem.
1520 ret = read(fd->fd, &byte, 1);
1522 /* process all ports */
1523 mISDNport = mISDNport_first;
1525 /* handle queued up-messages (d-channel) */
1526 while ((mb = mdequeue(&mISDNport->upqueue))) {
1529 case MPH_ACTIVATE_IND:
1530 if (mISDNport->l1link != 1) {
1531 l1l2l3_trace_header(mISDNport, NULL, L1_ACTIVATE_IND, DIRECTION_IN);
1533 mISDNport->l1link = 1;
1537 case MPH_DEACTIVATE_IND:
1538 if (mISDNport->l1link != 0) {
1539 l1l2l3_trace_header(mISDNport, NULL, L1_DEACTIVATE_IND, DIRECTION_IN);
1541 mISDNport->l1link = 0;
1545 case MPH_INFORMATION_IND:
1546 PDEBUG(DEBUG_ISDN, "Received MPH_INFORMATION_IND for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
1548 case L1_SIGNAL_LOS_ON:
1551 case L1_SIGNAL_LOS_OFF:
1554 case L1_SIGNAL_AIS_ON:
1557 case L1_SIGNAL_AIS_OFF:
1560 case L1_SIGNAL_RDI_ON:
1563 case L1_SIGNAL_RDI_OFF:
1566 case L1_SIGNAL_SLIP_TX:
1567 mISDNport->slip_tx++;
1569 case L1_SIGNAL_SLIP_RX:
1570 mISDNport->slip_rx++;
1575 case MT_L2ESTABLISH:
1576 l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_IND, DIRECTION_IN);
1577 add_trace("tei", NULL, "%d", l3m->pid);
1579 mISDNport->l2link = 1;
1581 mISDNport->l2mask[l3m->pid >> 3] |= (1 << (l3m->pid & 7));
1582 if ((!mISDNport->ntmode || mISDNport->ptp) && l3m->pid < 127) {
1583 if (mISDNport->l2establish.active) {
1584 unsched_timer(&mISDNport->l2establish);
1585 PDEBUG(DEBUG_ISDN, "the link became active before l2establish timer expiry.\n");
1592 mISDNport->l2mask[l3m->pid >> 3] &= ~(1 << (l3m->pid & 7));
1593 if (!mISDNport->l2establish.active) {
1594 l1l2l3_trace_header(mISDNport, NULL, L2_RELEASE_IND, DIRECTION_IN);
1595 add_trace("tei", NULL, "%d", l3m->pid);
1597 /* down if not nt-ptmp */
1598 if (!mISDNport->ntmode || mISDNport->ptp)
1599 mISDNport->l2link = 0;
1601 if ((!mISDNport->ntmode || mISDNport->ptp) && l3m->pid < 127) {
1602 if (!mISDNport->l2establish.active && mISDNport->l2hold) {
1603 PDEBUG(DEBUG_ISDN, "set timer and establish.\n");
1604 schedule_timer(&mISDNport->l2establish, 5, 0);
1605 mISDNport->ml3->to_layer3(mISDNport->ml3, MT_L2ESTABLISH, 0, NULL);
1611 /* l3-data is sent to LCR */
1612 stack2manager(mISDNport, l3m->type, l3m->pid, l3m);
1617 mISDNport = mISDNport->next;
1622 /* l2 establish timer fires */
1623 static int l2establish_timeout(struct lcr_timer *timer, void *instance, int i)
1625 struct mISDNport *mISDNport = (struct mISDNport *)instance;
1627 if (mISDNport->l2hold && (mISDNport->ptp || !mISDNport->ntmode)) {
1628 PDEBUG(DEBUG_ISDN, "the L2 establish timer expired, we try to establish the link portnum=%d.\n", mISDNport->portnum);
1629 mISDNport->ml3->to_layer3(mISDNport->ml3, MT_L2ESTABLISH, 0, NULL);
1630 schedule_timer(&mISDNport->l2establish, 5, 0); /* 5 seconds */
1636 /* handle frames from bchannel */
1637 static int b_sock_callback(struct lcr_fd *fd, unsigned int what, void *instance, int i)
1639 struct mISDNport *mISDNport = (struct mISDNport *)instance;
1640 unsigned char buffer[2048+MISDN_HEADER_LEN];
1641 struct mISDNhead *hh = (struct mISDNhead *)buffer;
1644 ret = recv(fd->fd, buffer, sizeof(buffer), 0);
1646 PERROR("read error frame, errno %d\n", errno);
1649 if (ret < (int)MISDN_HEADER_LEN) {
1650 PERROR("read short frame, got %d, expected %d\n", ret, (int)MISDN_HEADER_LEN);
1654 /* we don't care about confirms, we use rx data to sync tx */
1658 /* we receive audio data, we respond to it AND we send tones */
1663 case PH_CONTROL_IND:
1664 if (mISDNport->b_port[i])
1665 mISDNport->b_port[i]->bchannel_receive(hh, buffer+MISDN_HEADER_LEN, ret-MISDN_HEADER_LEN);
1667 PDEBUG(DEBUG_BCHANNEL, "b-channel is not associated to an ISDNPort (socket %d), ignoring.\n", fd->fd);
1670 case PH_ACTIVATE_IND:
1671 case DL_ESTABLISH_IND:
1672 case PH_ACTIVATE_CNF:
1673 case DL_ESTABLISH_CNF:
1674 PDEBUG(DEBUG_BCHANNEL, "DL_ESTABLISH confirm: bchannel is now activated (socket %d).\n", fd->fd);
1675 bchannel_event(mISDNport, i, B_EVENT_ACTIVATED);
1678 case PH_DEACTIVATE_IND:
1679 case DL_RELEASE_IND:
1680 case PH_DEACTIVATE_CNF:
1681 case DL_RELEASE_CNF:
1682 PDEBUG(DEBUG_BCHANNEL, "DL_RELEASE confirm: bchannel is now de-activated (socket %d).\n", fd->fd);
1683 bchannel_event(mISDNport, i, B_EVENT_DEACTIVATED);
1687 PERROR("child message not handled: prim(0x%x) socket(%d) msg->len(%d)\n", hh->prim, fd->fd, ret-MISDN_HEADER_LEN);
1693 /* process timer events for bchannel handling */
1694 static int b_timer_timeout(struct lcr_timer *timer, void *instance, int i)
1696 struct mISDNport *mISDNport = (struct mISDNport *)instance;
1698 bchannel_event(mISDNport, i, B_EVENT_TIMEOUT);
1704 int do_layer3(struct mlayer3 *ml3, unsigned int cmd, unsigned int pid, struct l3_msg *l3m)
1708 * l3m must be queued, except for MT_ASSIGN
1711 struct mISDNport *mISDNport = (struct mISDNport *)ml3->priv;
1714 #ifdef OLD_MT_ASSIGN
1715 /* special MT_ASSIGN handling:
1717 * if we request a PID from mlayer, we always do it while lcr is locked.
1718 * therefore we must check the MT_ASSIGN reply first before we lock.
1719 * this is because the MT_ASSIGN reply is received with the requesting
1720 * process, not by the mlayer thread!
1721 * this means, that the reply is sent during call of the request.
1722 * we must check if we get a reply and we know that we lcr is currently
1725 if (cmd==MT_ASSIGN && (pid&MISDN_PID_CR_FLAG) && (pid>>16)==MISDN_CES_MASTER) {
1726 /* let's do some checking if someone changes stack behaviour */
1727 if (mt_assign_pid != 0)
1728 FATAL("someone played with the mISDNuser stack. MT_ASSIGN not currently expected.\n");
1729 mt_assign_pid = pid;
1733 /* queue message, create, if required */
1735 l3m = alloc_l3_msg();
1737 FATAL("No memory for layer 3 message\n");
1739 mb = container_of(l3m, struct mbuffer, l3);
1742 mqueue_tail(&mISDNport->upqueue, mb);
1743 if (!upqueue_avail) {
1744 // multiple threads may cause multiple calls of this section, but this
1745 // results only in multiple processing of the upqueue read.
1746 // this is no problem.
1750 ret = write(upqueue_pipe[1], &byte, 1);
1755 int mISDN_getportbyname(int sock, int cnt, char *portname)
1757 struct mISDN_devinfo devinfo;
1761 while (port < cnt) {
1763 ret = ioctl(sock, IMGETDEVINFO, &devinfo);
1766 if (!strcasecmp(devinfo.name, portname))
1777 * global function to add a new card (port)
1779 struct mISDNport *mISDNport_open(struct interface_port *ifport)
1782 struct mISDNport *mISDNport, **mISDNportp;
1783 int port = ifport->portnum;
1784 int ptp = ifport->ptp;
1785 int force_nt = ifport->nt;
1786 int l1hold = ifport->l1hold;
1787 int l2hold = ifport->l2hold;
1788 int ss5 = ifport->ss5;
1792 // struct mlayer3 *ml3;
1793 struct mISDN_devinfo devinfo;
1794 unsigned int protocol, prop;
1796 /* check port counts */
1797 ret = ioctl(mISDNsocket, IMGETCOUNT, &cnt);
1799 fprintf(stderr, "Cannot get number of mISDN devices. (ioctl IMGETCOUNT failed ret=%d)\n", ret);
1804 PERROR_RUNTIME("Found no card. Please be sure to load card drivers.\n");
1808 port = mISDN_getportbyname(mISDNsocket, cnt, ifport->portname);
1810 PERROR_RUNTIME("Port name '%s' not found, use 'misdn_info' tool to list all existing ports.\n", ifport->portname);
1813 // note: 'port' has still the port number
1815 if (port>cnt || port<0) {
1816 PERROR_RUNTIME("Port (%d) given at 'ports' (options.conf) is out of existing port range (%d-%d)\n", port, 0, cnt);
1820 /* get port attributes */
1821 pri = bri = pots = nt = te = 0;
1823 ret = ioctl(mISDNsocket, IMGETDEVINFO, &devinfo);
1825 PERROR_RUNTIME("Cannot get device information for port %d. (ioctl IMGETDEVINFO failed ret=%d)\n", port, ret);
1828 if (devinfo.Dprotocols & (1 << ISDN_P_TE_S0)) {
1832 if (devinfo.Dprotocols & (1 << ISDN_P_NT_S0)) {
1836 if (devinfo.Dprotocols & (1 << ISDN_P_TE_E1)) {
1840 if (devinfo.Dprotocols & (1 << ISDN_P_NT_E1)) {
1845 if (devinfo.Dprotocols & (1 << ISDN_P_FXS)) {
1851 if (devinfo.Dprotocols & (1 << ISDN_P_FXO)) {
1856 if (force_nt && !nt) {
1857 PERROR_RUNTIME("Port %d does not support NT-mode\n", port);
1861 PERROR_RUNTIME("Port %d supports BRI and PRI?? What kind of controller is that?. (Can't use this!)\n", port);
1864 if (pots && !bri && !pri) {
1865 PERROR_RUNTIME("Port %d supports POTS, LCR does not!\n", port);
1869 PERROR_RUNTIME("Port %d does not support BRI nor PRI!\n", port);
1873 PERROR_RUNTIME("Port %d does not support NT-mode nor TE-mode!\n", port);
1876 /* set NT by turning off TE */
1879 /* if TE an NT is supported (and not forced to NT), turn off NT */
1883 /* check for double use of port */
1885 mISDNport = mISDNport_first;
1887 if (mISDNport->portnum == port)
1889 mISDNport = mISDNport->next;
1892 PERROR_RUNTIME("Port %d already in use by LCR. You can't use a NT port multiple times.\n", port);
1897 /* check for continous channelmap with no bchannel on slot 16 */
1898 if (test_channelmap(0, devinfo.channelmap)) {
1899 PERROR_RUNTIME("Port %d provides channel 0, but we cannot access it!\n", port);
1903 while(i < (int)devinfo.nrbchan + 1) {
1905 if (test_channelmap(i, devinfo.channelmap)) {
1906 PERROR("Port %d provides bchannel 16. Pleas upgrade mISDN, if this port is mISDN loopback interface.\n", port);
1910 if (!test_channelmap(i, devinfo.channelmap)) {
1911 PERROR_RUNTIME("Port %d has no channel on slot %d!\n", port, i);
1918 /* add mISDNport structure */
1919 mISDNportp = &mISDNport_first;
1921 mISDNportp = &((*mISDNportp)->next);
1922 mISDNport = (struct mISDNport *)MALLOC(sizeof(struct mISDNport));
1923 add_timer(&mISDNport->l2establish, l2establish_timeout, mISDNport, 0);
1925 /* ss5 link is always active */
1926 mISDNport->l1link = 1;
1927 mISDNport->l2link = 1;
1929 mISDNport->l1link = -1;
1930 mISDNport->l2link = -1;
1933 *mISDNportp = mISDNport;
1935 /* if pri, must set PTP */
1939 /* set ss5 params */
1941 /* try to keep interface enabled */
1961 /* allocate ressources of port */
1962 protocol = (nt)?L3_PROTOCOL_DSS1_NET:L3_PROTOCOL_DSS1_USER;
1963 prop = (1 << MISDN_FLG_L2_CLEAN);
1964 if (ptp) // ptp forced
1965 prop |= (1 << MISDN_FLG_PTP);
1966 if (nt) // supports hold/retrieve on nt-mode
1967 prop |= (1 << MISDN_FLG_NET_HOLD);
1968 if (l1hold) // supports layer 1 hold
1969 prop |= (1 << MISDN_FLG_L1_HOLD);
1970 if (l2hold) // supports layer 2 hold
1971 prop |= (1 << MISDN_FLG_L2_HOLD);
1972 /* open layer 3 and init upqueue */
1973 /* queue must be initializes, because l3-thread may send messages during open_layer3() */
1974 mqueue_init(&mISDNport->upqueue);
1975 mISDNport->ml3 = open_layer3(port, protocol, prop , do_layer3, mISDNport);
1976 if (!mISDNport->ml3) {
1977 mqueue_purge(&mISDNport->upqueue);
1978 PERROR_RUNTIME("open_layer3() failed for port %d\n", port);
1986 "PORT (open failed)");
1988 mISDNport_close(mISDNport);
1992 SCPY(mISDNport->name, devinfo.name);
1993 mISDNport->b_num = devinfo.nrbchan;
1994 mISDNport->portnum = port;
1995 mISDNport->ntmode = nt;
1996 mISDNport->tespecial = ifport->tespecial;
1997 mISDNport->pri = pri;
1998 mISDNport->ptp = ptp;
1999 mISDNport->l1hold = l1hold;
2000 mISDNport->l2hold = l2hold;
2001 mISDNport->ss5 = ss5;
2002 PDEBUG(DEBUG_ISDN, "Port has %d b-channels.\n", mISDNport->b_num);
2004 while(i < mISDNport->b_num) {
2005 mISDNport->b_state[i] = B_STATE_IDLE;
2006 add_timer(&mISDNport->b_timer[i], b_timer_timeout, mISDNport, i);
2010 /* if ptp, pull up the link */
2011 if (mISDNport->l2hold && (mISDNport->ptp || !mISDNport->ntmode)) {
2012 mISDNport->ml3->to_layer3(mISDNport->ml3, MT_L2ESTABLISH, 0, NULL);
2013 l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_REQ, DIRECTION_OUT);
2014 add_trace("tei", NULL, "%d", 0);
2016 schedule_timer(&mISDNport->l2establish, 5, 0); /* 5 seconds */
2019 /* for nt-mode ptmp the link is always up */
2020 if (mISDNport->ntmode && !mISDNport->ptp)
2021 mISDNport->l2link = 1;
2023 PDEBUG(DEBUG_BCHANNEL, "using 'mISDN_dsp.o' module\n");
2025 start_trace(mISDNport->portnum,
2033 add_trace("mode", NULL, (mISDNport->ntmode)?"network":"terminal");
2034 add_trace("channels", NULL, "%d", mISDNport->b_num);
2036 add_trace("ccitt#5", NULL, "enabled");
2044 * load static port instances, if required by mISDNport
2046 void mISDNport_static(struct mISDNport *mISDNport)
2051 while(i < mISDNport->b_num) {
2054 ss5_create_channel(mISDNport, i);
2062 * function to free ALL cards (ports)
2064 void mISDNport_close_all(void)
2066 /* free all ports */
2067 while(mISDNport_first)
2068 mISDNport_close(mISDNport_first);
2072 * free only one port
2074 void mISDNport_close(struct mISDNport *mISDNport)
2076 struct mISDNport **mISDNportp;
2078 class PmISDN *isdnport;
2081 /* remove all port instance that are linked to this mISDNport */
2085 if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_mISDN) {
2086 isdnport = (class PmISDN *)port;
2087 if (isdnport->p_m_mISDNport && isdnport->p_m_mISDNport == mISDNport) {
2088 PDEBUG(DEBUG_ISDN, "port %s uses mISDNport %d, destroying it.\n", isdnport->p_name, mISDNport->portnum);
2096 /* only if we are already part of interface */
2097 if (mISDNport->ifport) {
2098 start_trace(mISDNport->portnum,
2099 mISDNport->ifport->interface,
2109 /* free bchannels */
2111 while(i < mISDNport->b_num) {
2112 if (mISDNport->b_sock[i].inuse) {
2113 _bchannel_destroy(mISDNport, i);
2114 PDEBUG(DEBUG_BCHANNEL, "freeing %s port %d bchannel (index %d).\n", (mISDNport->ntmode)?"NT":"TE", mISDNport->portnum, i);
2116 if (mISDNport->b_timer[i].inuse) {
2117 del_timer(&mISDNport->b_timer[i]);
2121 del_timer(&mISDNport->l2establish);
2123 /* close layer 3, if open */
2124 if (mISDNport->ml3) {
2125 close_layer3(mISDNport->ml3);
2129 mqueue_purge(&mISDNport->upqueue);
2131 /* remove from list */
2132 mISDNportp = &mISDNport_first;
2133 while(*mISDNportp) {
2134 if (*mISDNportp == mISDNport) {
2135 *mISDNportp = (*mISDNportp)->next;
2139 mISDNportp = &((*mISDNportp)->next);
2143 FATAL("mISDNport not in list\n");
2145 FREE(mISDNport, sizeof(struct mISDNport));
2152 * enque data from remote port
2154 int PmISDN::bridge_rx(unsigned char *data, int length)
2156 unsigned char buf[MISDN_HEADER_LEN+((length>p_m_preload)?length:p_m_preload)];
2157 struct mISDNhead *hh = (struct mISDNhead *)buf;
2160 if (p_m_b_index < 0)
2162 if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_ACTIVE)
2165 /* check if high priority tones exist
2166 * ignore data in this case
2168 if (p_tone_name[0] || p_m_crypt_msg_loops || p_m_inband_send_on)
2171 /* preload procedure
2172 * if transmit buffer in DSP module is empty,
2173 * preload it to DSP_LOAD to prevent jitter gaps.
2175 * if load runs empty, preload again.
2177 if (p_m_disable_dejitter && p_m_load == 0 && p_m_preload > 0) {
2178 //printf("preload=%d\n", p_m_preload);
2179 hh->prim = PH_DATA_REQ;
2181 memset(buf+MISDN_HEADER_LEN, silence, p_m_preload);
2182 ret = sendto(p_m_mISDNport->b_sock[p_m_b_index].fd, buf, MISDN_HEADER_LEN+p_m_preload, 0, NULL, 0);
2184 PERROR("Failed to send to socket %d\n", p_m_mISDNport->b_sock[p_m_b_index].fd);
2185 p_m_load += p_m_preload;
2186 schedule_timer(&p_m_loadtimer, 0, PORT_TRANSMIT * 125);
2189 /* drop if load would exceed ISDN_MAXLOAD
2190 * this keeps the delay not too high
2192 //printf("load=%d len=%d 2*preload=%d\n", p_m_load, length, p_m_preload << 1);
2193 if (p_m_disable_dejitter && p_m_preload > 0 && p_m_load+length > (p_m_preload << 1))
2196 /* make and send frame */
2197 hh->prim = PH_DATA_REQ;
2199 memcpy(buf+MISDN_HEADER_LEN, data, length);
2200 ret = sendto(p_m_mISDNport->b_sock[p_m_b_index].fd, buf, MISDN_HEADER_LEN+length, 0, NULL, 0);
2202 PERROR("Failed to send to socket %d\n", p_m_mISDNport->b_sock[p_m_b_index].fd);
2208 int PmISDN::inband_send(unsigned char *buffer, int len)
2210 PERROR("this function must be derived to function!\n");
2214 void PmISDN::inband_send_on(void)
2216 PDEBUG(DEBUG_PORT, "turning inband signalling send on.\n");
2217 p_m_inband_send_on = 1;
2220 void PmISDN::inband_send_off(void)
2222 PDEBUG(DEBUG_PORT, "turning inband signalling send off.\n");
2223 p_m_inband_send_on = 0;
2226 void PmISDN::inband_receive(unsigned char *buffer, int len)
2229 // if (len >= SS5_DECODER_NPOINTS)
2230 // ss5_decode(buffer, SS5_DECODER_NPOINTS);
2231 PERROR("this function must be derived to function!\n");
2234 void PmISDN::inband_receive_on(void)
2236 /* this must work during constructor, see ss5.cpp */
2237 PDEBUG(DEBUG_PORT, "turning inband signalling receive on.\n");
2238 p_m_inband_receive_on = 1;
2242 void PmISDN::inband_receive_off(void)
2244 PDEBUG(DEBUG_PORT, "turning inband signalling receive off.\n");
2245 p_m_inband_receive_on = 0;
2249 void PmISDN::mute_on(void)
2253 PDEBUG(DEBUG_PORT, "turning mute on.\n");
2255 set_conf(p_m_conf, 0);
2258 void PmISDN::mute_off(void)
2262 PDEBUG(DEBUG_PORT, "turning mute off.\n");
2264 set_conf(0, p_m_conf);