[svn-commits] rmudgett: branch 1.4 r2070 - /branches/1.4/
SVN commits to the Digium repositories
svn-commits at lists.digium.com
Thu Oct 21 11:37:13 CDT 2010
Author: rmudgett
Date: Thu Oct 21 11:37:10 2010
New Revision: 2070
URL: http://svnview.digium.com/svn/libpri?view=rev&rev=2070
Log:
Restructure the Q.931 call record to layer 2 link association.
This is in anticipation of extracting a layer 2 link structure out of
struct pri.
Also completes fixing timer value access for the rest of libpri. The
timer access must always be on the D channel control structure (Master).
May have fixed some events from timeouts not being passed to the upper
layer. The timeout events must always be on the D channel control
structure (Master).
Modified:
branches/1.4/pri.c
branches/1.4/pri_facility.c
branches/1.4/pri_internal.h
branches/1.4/pri_q921.h
branches/1.4/pri_q931.h
branches/1.4/q921.c
branches/1.4/q931.c
Modified: branches/1.4/pri.c
URL: http://svnview.digium.com/svn/libpri/branches/1.4/pri.c?view=diff&rev=2070&r1=2069&r2=2070
==============================================================================
--- branches/1.4/pri.c (original)
+++ branches/1.4/pri.c Thu Oct 21 11:37:10 2010
@@ -293,6 +293,7 @@
call = p->dummy_call;
if (call) {
pri_schedule_del(call->pri, call->retranstimer);
+ call->retranstimer = 0;
pri_call_apdu_queue_cleanup(call);
}
free(p->msg_line);
@@ -303,6 +304,7 @@
struct pri *__pri_new_tei(int fd, int node, int switchtype, struct pri *master, pri_io_cb rd, pri_io_cb wr, void *userdata, int tei, int bri)
{
+ int create_dummy_call;
struct d_ctrl_dummy *dummy_ctrl;
struct pri *p;
@@ -311,19 +313,32 @@
case PRI_SWITCH_GR303_TMC:
case PRI_SWITCH_GR303_TMC_SWITCHING:
case PRI_SWITCH_GR303_EOC_PATH:
+ create_dummy_call = 0;
+ break;
+ default:
+ if (bri && node == PRI_CPE && tei == Q921_TEI_GROUP) {
+ /*
+ * BRI TE PTMP will not use its own group dummy call record. It
+ * will use the specific TEI dummy call instead.
+ */
+ create_dummy_call = 0;
+ } else {
+ create_dummy_call = 1;
+ }
+ break;
+ }
+ if (create_dummy_call) {
+ dummy_ctrl = calloc(1, sizeof(*dummy_ctrl));
+ if (!dummy_ctrl) {
+ return NULL;
+ }
+ p = &dummy_ctrl->ctrl;
+ } else {
p = calloc(1, sizeof(*p));
if (!p) {
return NULL;
}
dummy_ctrl = NULL;
- break;
- default:
- dummy_ctrl = calloc(1, sizeof(*dummy_ctrl));
- if (!dummy_ctrl) {
- return NULL;
- }
- p = &dummy_ctrl->ctrl;
- break;
}
if (!master) {
/* This is the master record. */
@@ -402,12 +417,20 @@
break;
}
- if (p->tei == Q921_TEI_GROUP && p->sapi == Q921_SAPI_LAYER2_MANAGEMENT && p->localtype == PRI_CPE) {
+ if (p->tei == Q921_TEI_GROUP && p->sapi == Q921_SAPI_LAYER2_MANAGEMENT
+ && p->localtype == PRI_CPE) {
p->subchannel = __pri_new_tei(-1, p->localtype, p->switchtype, p, NULL, NULL, NULL, Q921_TEI_PRI, 1);
if (!p->subchannel) {
free(p);
return NULL;
}
+ /*
+ * Make the group link use the just created specific TEI link
+ * dummy call instead. It makes no sense for TE PTMP interfaces
+ * to broadcast messages on the dummy call or to broadcast any
+ * messages for that matter.
+ */
+ p->dummy_call = p->subchannel->dummy_call;
} else
q921_start(p);
Modified: branches/1.4/pri_facility.c
URL: http://svnview.digium.com/svn/libpri/branches/1.4/pri_facility.c?view=diff&rev=2070&r1=2069&r2=2070
==============================================================================
--- branches/1.4/pri_facility.c (original)
+++ branches/1.4/pri_facility.c Thu Oct 21 11:37:10 2010
@@ -2556,8 +2556,9 @@
switch (reason) {
case APDU_CALLBACK_REASON_MSG_RESULT:
- call_2 = q931_find_call(ctrl, apdu->response.user.value);
- if (!call_2) {
+ call_2 = apdu->response.user.ptr;
+ if (!q931_is_call_valid(ctrl, call_2)) {
+ /* Call is no longer present. */
break;
}
@@ -2636,7 +2637,7 @@
response.invoke_id = ctrl->last_invoke;
response.timeout_time = ctrl->timers[PRI_TIMER_T_RESPONSE];
response.callback = etsi_ect_link_id_rsp;
- response.user.value = call_2->cr;
+ response.user.ptr = call_2;
/* Remember that if we queue a facility IE for a facility message we
* have to explicitly send the facility message ourselves */
Modified: branches/1.4/pri_internal.h
URL: http://svnview.digium.com/svn/libpri/branches/1.4/pri_internal.h?view=diff&rev=2070&r1=2069&r2=2070
==============================================================================
--- branches/1.4/pri_internal.h (original)
+++ branches/1.4/pri_internal.h Thu Oct 21 11:37:10 2010
@@ -448,9 +448,10 @@
/* q931_call datastructure */
struct q931_call {
- struct pri *pri; /* PRI */
+ struct pri *pri; /* D channel controller (master) */
+ struct pri *link; /* Q.921 link associated with this call. */
+ struct q931_call *next;
int cr; /* Call Reference */
- q931_call *next;
/* Slotmap specified (bitmap of channels 31/24-1) (Channel Identifier IE) (-1 means not specified) */
int slotmap;
/* An explicit channel (Channel Identifier IE) (-1 means not specified) */
@@ -914,7 +915,7 @@
struct pri *__pri_new_tei(int fd, int node, int switchtype, struct pri *master, pri_io_cb rd, pri_io_cb wr, void *userdata, int tei, int bri);
void __pri_free_tei(struct pri *p);
-void q931_init_call_record(struct pri *ctrl, struct q931_call *call, int cr);
+void q931_init_call_record(struct pri *link, struct q931_call *call, int cr);
void pri_sr_init(struct pri_sr *req);
Modified: branches/1.4/pri_q921.h
URL: http://svnview.digium.com/svn/libpri/branches/1.4/pri_q921.h?view=diff&rev=2070&r1=2069&r2=2070
==============================================================================
--- branches/1.4/pri_q921.h (original)
+++ branches/1.4/pri_q921.h Thu Oct 21 11:37:10 2010
@@ -195,7 +195,7 @@
extern pri_event *q921_receive(struct pri *pri, q921_h *h, int len);
-extern int q921_transmit_iframe(struct pri *pri, int tei, void *buf, int len, int cr);
+int q921_transmit_iframe(struct pri *link, void *buf, int len, int cr);
int q921_transmit_uiframe(struct pri *link, void *buf, int len);
Modified: branches/1.4/pri_q931.h
URL: http://svnview.digium.com/svn/libpri/branches/1.4/pri_q931.h?view=diff&rev=2070&r1=2069&r2=2070
==============================================================================
--- branches/1.4/pri_q931.h (original)
+++ branches/1.4/pri_q931.h Thu Oct 21 11:37:10 2010
@@ -450,13 +450,11 @@
extern int maintenance_service(struct pri *pri, int span, int channel, int changestatus);
-extern int maintenance_service_ack(struct pri *pri, q931_call *call);
-
/* Q.SIG specific */
#define QSIG_IE_TRANSIT_COUNT 0x31
-extern int q931_receive(struct pri *pri, int tei, q931_h *h, int len);
+int q931_receive(struct pri *link, q931_h *h, int len);
extern int q931_alerting(struct pri *pri, q931_call *call, int channel, int info);
@@ -491,8 +489,7 @@
extern int q931_call_setcrv(struct pri *pri, q931_call *call, int crv, int callmode);
-struct q931_call *q931_find_call(struct pri *ctrl, int cr);
-struct q931_call *q931_new_call(struct pri *pri);
+struct q931_call *q931_new_call(struct pri *ctrl);
extern int q931_setup(struct pri *pri, q931_call *c, struct pri_sr *req);
Modified: branches/1.4/q921.c
URL: http://svnview.digium.com/svn/libpri/branches/1.4/q921.c?view=diff&rev=2070&r1=2069&r2=2070
==============================================================================
--- branches/1.4/q921.c (original)
+++ branches/1.4/q921.c Thu Oct 21 11:37:10 2010
@@ -798,41 +798,33 @@
}
/* This is the equivalent of a DL-DATA request, as well as the I-frame queued up outcome */
-int q921_transmit_iframe(struct pri *link, int tei, void *buf, int len, int cr)
+int q921_transmit_iframe(struct pri *link, void *buf, int len, int cr)
{
q921_frame *f, *prev=NULL;
struct pri *ctrl;
ctrl = PRI_MASTER(link);
- if (BRI_NT_PTMP(ctrl)) {
- if (tei == Q921_TEI_GROUP) {
- pri_error(ctrl, "Huh?! For NT-PTMP, we shouldn't be sending I-frames out the group TEI\n");
+ if (PTMP_MODE(ctrl)) {
+ if (link->tei == Q921_TEI_GROUP) {
+ pri_error(ctrl, "Huh?! For PTMP, we shouldn't be sending I-frames out the group TEI\n");
return 0;
}
-
- link = pri_find_tei(ctrl, Q921_SAPI_CALL_CTRL, tei);
- if (!link) {
- pri_error(ctrl, "Huh?! Unable to locate PRI associated with TEI %d. Did we have to ditch it due to error conditions?\n", tei);
- return 0;
- }
- } else if (BRI_TE_PTMP(ctrl)) {
- /* We don't care what the tei is, since we only support one sub and one TEI */
- link = ctrl->subchannel;
-
- switch (link->q921_state) {
- case Q921_TEI_UNASSIGNED:
- q921_setstate(link, Q921_ESTABLISH_AWAITING_TEI);
- q921_tei_request(link);
- break;
- case Q921_ASSIGN_AWAITING_TEI:
- q921_setstate(link, Q921_ESTABLISH_AWAITING_TEI);
- break;
- default:
- break;
+ if (BRI_TE_PTMP(ctrl)) {
+ switch (link->q921_state) {
+ case Q921_TEI_UNASSIGNED:
+ q921_setstate(link, Q921_ESTABLISH_AWAITING_TEI);
+ q921_tei_request(link);
+ break;
+ case Q921_ASSIGN_AWAITING_TEI:
+ q921_setstate(link, Q921_ESTABLISH_AWAITING_TEI);
+ break;
+ default:
+ break;
+ }
}
} else {
- /* Should just be PTP modes, which shouldn't have subs */
+ /* PTP modes, which shouldn't have subs */
}
/* Figure B.7/Q.921 Page 70 */
@@ -2269,9 +2261,9 @@
}
if (delay_q931_receive) {
/* Q.921 has finished processing the frame so we can give it to Q.931 now. */
- res = q931_receive(link, link->tei, (q931_h *) h->i.data, len - 4);
+ res = q931_receive(link, (q931_h *) h->i.data, len - 4);
if (res != -1 && (res & Q931_RES_HAVEEVENT)) {
- eres = &link->ev;
+ eres = &ctrl->ev;
}
}
break;
@@ -2519,9 +2511,9 @@
if (ctrl->debug & PRI_DEBUG_Q931_DUMP) {
q931_dump(ctrl, h->h.tei, (q931_h *) h->u.data, len - 3, 0);
}
- res = q931_receive(link, link->tei, (q931_h *) h->u.data, len - 3);
+ res = q931_receive(link, (q931_h *) h->u.data, len - 3);
if (res != -1 && (res & Q931_RES_HAVEEVENT)) {
- ev = &link->ev;
+ ev = &ctrl->ev;
}
break;
case 0x08:
Modified: branches/1.4/q931.c
URL: http://svnview.digium.com/svn/libpri/branches/1.4/q931.c?view=diff&rev=2070&r1=2069&r2=2070
==============================================================================
--- branches/1.4/q931.c (original)
+++ branches/1.4/q931.c Thu Oct 21 11:37:10 2010
@@ -3778,7 +3778,7 @@
/*!
* \brief Initialize the call record.
*
- * \param ctrl D channel controller.
+ * \param link Q.921 link associated with the call.
* \param call Q.931 call leg.
* \param cr Call Reference identifier.
*
@@ -3786,8 +3786,10 @@
*
* \return Nothing
*/
-void q931_init_call_record(struct pri *ctrl, struct q931_call *call, int cr)
-{
+void q931_init_call_record(struct pri *link, struct q931_call *call, int cr)
+{
+ struct pri *ctrl;
+
call->cr = cr;
call->slotmap = -1;
call->channelno = -1;
@@ -3822,15 +3824,17 @@
q931_party_number_init(&call->ani);
q931_party_redirecting_init(&call->redirecting);
- /* PRI is set to whoever called us */
- if (BRI_TE_PTMP(ctrl)) {
- /*
- * Point to the master to avoid stale pointer problems if
- * the TEI is removed later.
- */
- call->pri = PRI_MASTER(ctrl);
+ /* The call is now attached to whoever called us */
+ ctrl = PRI_MASTER(link);
+ call->pri = ctrl;
+ if (cr == Q931_DUMMY_CALL_REFERENCE) {
+ /* Dummy calls are always for the given link. */
+ call->link = link;
+ } else if (BRI_TE_PTMP(ctrl)) {
+ /* Always uses the specific TEI link. */
+ call->link = ctrl->subchannel;
} else {
- call->pri = ctrl;
+ call->link = link;
}
}
@@ -3838,17 +3842,20 @@
* \internal
* \brief Create a new call record.
*
- * \param ctrl D channel controller.
+ * \param link Q.921 link associated with the call.
* \param cr Call Reference identifier.
*
* \retval record on success.
* \retval NULL on error.
*/
-static struct q931_call *q931_create_call_record(struct pri *ctrl, int cr)
+static struct q931_call *q931_create_call_record(struct pri *link, int cr)
{
struct q931_call *call;
struct q931_call *prev;
- struct pri *master;
+ struct pri *ctrl;
+
+ /* Find the master - He has the call pool */
+ ctrl = PRI_MASTER(link);
if (ctrl->debug & PRI_DEBUG_Q931_STATE) {
pri_message(ctrl, "-- Making new call for cref %d\n", cr);
@@ -3860,62 +3867,60 @@
}
/* Initialize call structure. */
- q931_init_call_record(ctrl, call, cr);
-
- /* Find the master - He has the call pool */
- master = PRI_MASTER(ctrl);
+ q931_init_call_record(link, call, cr);
/* Append to the list end */
- if (*master->callpool) {
+ if (*ctrl->callpool) {
/* Find the list end. */
- for (prev = *master->callpool; prev->next; prev = prev->next) {
+ for (prev = *ctrl->callpool; prev->next; prev = prev->next) {
}
prev->next = call;
} else {
/* List was empty. */
- *master->callpool = call;
+ *ctrl->callpool = call;
}
return call;
}
/*!
+ * \internal
* \brief Find a call in the active call pool.
*
- * \param ctrl D channel controller.
+ * \param link Q.921 link associated with the call.
* \param cr Call Reference identifier.
*
* \retval call if found.
* \retval NULL if not found.
*/
-struct q931_call *q931_find_call(struct pri *ctrl, int cr)
+static struct q931_call *q931_find_call(struct pri *link, int cr)
{
struct q931_call *cur;
- struct pri *master;
+ struct pri *ctrl;
if (cr == Q931_DUMMY_CALL_REFERENCE) {
- return ctrl->dummy_call;
+ return link->dummy_call;
}
/* Find the master - He has the call pool */
- master = PRI_MASTER(ctrl);
+ ctrl = PRI_MASTER(link);
if (BRI_NT_PTMP(ctrl) && !(cr & Q931_CALL_REFERENCE_FLAG)) {
- if (ctrl->tei == Q921_TEI_GROUP) {
- /* Broadcast TEI. This is bad. We are using the wrong ctrl structure. */
+ if (link->tei == Q921_TEI_GROUP) {
+ /* Broadcast TEI. This is bad. We are using the wrong link structure. */
pri_error(ctrl, "Looking for cref %d when using broadcast TEI.\n", cr);
return NULL;
}
/* We are looking for a call reference value that the other side allocated. */
- for (cur = *master->callpool; cur; cur = cur->next) {
- if (cur->cr == cr && cur->pri == ctrl) {
- /* Found existing call. The call reference and TEI matched. */
+ for (cur = *ctrl->callpool; cur; cur = cur->next) {
+ if (cur->cr == cr && cur->link == link) {
+ /* Found existing call. The call reference and link matched. */
break;
}
}
} else {
- for (cur = *master->callpool; cur; cur = cur->next) {
+ for (cur = *ctrl->callpool; cur; cur = cur->next) {
if (cur->cr == cr) {
/* Found existing call. */
switch (ctrl->switchtype) {
@@ -3926,8 +3931,9 @@
break;
default:
if (!ctrl->bri) {
- /* PRI is set to whoever called us */
+ /* The call is now attached to whoever called us */
cur->pri = ctrl;
+ cur->link = link;
}
break;
}
@@ -3938,51 +3944,72 @@
return cur;
}
-static struct q931_call *q931_getcall(struct pri *ctrl, int cr)
+static struct q931_call *q931_getcall(struct pri *link, int cr)
{
struct q931_call *cur;
-
- cur = q931_find_call(ctrl, cr);
+ struct pri *ctrl;
+
+ cur = q931_find_call(link, cr);
if (cur) {
return cur;
}
+ if (cr == Q931_DUMMY_CALL_REFERENCE) {
+ /* Do not create new dummy call records. */
+ return NULL;
+ }
+ ctrl = PRI_MASTER(link);
+ if (link->tei == Q921_TEI_GROUP
+ && BRI_NT_PTMP(ctrl)) {
+ /* Do not create NT PTMP broadcast call records here. */
+ pri_error(ctrl,
+ "NT PTMP cannot create call record for cref %d on the broadcast TEI.\n", cr);
+ return NULL;
+ }
/* No call record exists, make a new one */
- return q931_create_call_record(ctrl, cr);
-}
-
+ return q931_create_call_record(link, cr);
+}
+
+/*!
+ * \brief Create a new call record for an outgoing call.
+ *
+ * \param ctrl D channel controller.
+ *
+ * \retval call on success.
+ * \retval NULL on error.
+ */
struct q931_call *q931_new_call(struct pri *ctrl)
{
struct q931_call *cur;
- struct pri *master;
+ struct pri *link;
int first_cref;
int cref;
/* Find the master - He has the call pool */
- master = PRI_MASTER(ctrl);
+ ctrl = PRI_MASTER(ctrl);
/* Find a new call reference value. */
- first_cref = master->cref;
+ first_cref = ctrl->cref;
do {
- cref = Q931_CALL_REFERENCE_FLAG | master->cref;
+ cref = Q931_CALL_REFERENCE_FLAG | ctrl->cref;
/* Next call reference. */
- ++master->cref;
- if (!master->bri) {
- if (master->cref > 32767) {
- master->cref = 1;
+ ++ctrl->cref;
+ if (!ctrl->bri) {
+ if (ctrl->cref > 32767) {
+ ctrl->cref = 1;
}
} else {
- if (master->cref > 127) {
- master->cref = 1;
+ if (ctrl->cref > 127) {
+ ctrl->cref = 1;
}
}
/* Is the call reference value in use? */
- for (cur = *master->callpool; cur; cur = cur->next) {
+ for (cur = *ctrl->callpool; cur; cur = cur->next) {
if (cur->cr == cref) {
/* Yes it is in use. */
- if (first_cref == master->cref) {
+ if (first_cref == ctrl->cref) {
/* All call reference values are in use! */
return NULL;
}
@@ -3991,7 +4018,8 @@
}
} while (cur);
- return q931_create_call_record(ctrl, cref);
+ link = ctrl;
+ return q931_create_call_record(link, cref);
}
static void stop_t303(struct q931_call *call);
@@ -4475,20 +4503,27 @@
*mhb = mh;
}
-static int q931_xmit(struct pri *ctrl, int tei, q931_h *h, int len, int cr, int uiframe)
-{
+static void q931_xmit(struct pri *link, q931_h *h, int len, int cr, int uiframe)
+{
+ struct pri *ctrl;
+
+ ctrl = PRI_MASTER(link);
#ifdef LIBPRI_COUNTERS
ctrl->q931_txcount++;
#endif
if (uiframe) {
- q921_transmit_uiframe(ctrl, h, len);
+ if (link->tei != Q921_TEI_GROUP) {
+ pri_error(ctrl, "Huh?! Attempting to send UI-frame on TEI %d\n", link->tei);
+ return;
+ }
+ q921_transmit_uiframe(link, h, len);
if (ctrl->debug & PRI_DEBUG_Q931_DUMP) {
/*
* The transmit operation might dump the Q.921 header, so logging
* the Q.931 message body after the transmit puts the sections of
* the message in the right order in the log,
*/
- q931_dump(ctrl, tei, h, len, 1);
+ q931_dump(ctrl, link->tei, h, len, 1);
}
} else {
/*
@@ -4499,11 +4534,10 @@
* Q.931 message as appropriate at that time.
*/
if (ctrl->debug & PRI_DEBUG_Q931_DUMP) {
- q931_to_q921_passing_dump(ctrl, tei, h, len);
- }
- q921_transmit_iframe(ctrl, tei, h, len, cr);
- }
- return 0;
+ q931_to_q921_passing_dump(ctrl, link->tei, h, len);
+ }
+ q921_transmit_iframe(link, h, len, cr);
+ }
}
/*!
@@ -4532,12 +4566,18 @@
int x;
int codeset;
int uiframe;
- int tei;
if (call->outboundbroadcast && call->master_call == call && msgtype != Q931_SETUP) {
pri_error(ctrl,
"Attempting to use master call record to send %s on BRI PTMP NT %p\n",
msg2str(msgtype), ctrl);
+ return -1;
+ }
+
+ if (!call->link) {
+ pri_error(ctrl,
+ "Call w/ cref:%d is not associated with a link. TEI removed due to error conditions?\n",
+ call->cr);
return -1;
}
@@ -4561,7 +4601,6 @@
/* Invert the logic */
len = sizeof(buf) - len;
- tei = call->pri->tei;
uiframe = 0;
if (BRI_NT_PTMP(ctrl)) {
/* NT PTMP is the only mode that can broadcast Q.931 messages. */
@@ -4578,7 +4617,7 @@
uiframe = 1;
break;
case Q931_FACILITY:
- if (tei == Q921_TEI_GROUP) {
+ if (call->link->tei == Q921_TEI_GROUP) {
/* Broadcast TEI. */
if (q931_is_dummy_call(call)) {
/*
@@ -4600,24 +4639,18 @@
if (ctrl->debug & PRI_DEBUG_Q931_STATE) {
/* This message is only interesting for NT PTMP mode. */
pri_message(ctrl,
- "Sending message for call %p on call->pri: %p with TEI/SAPI %d/%d\n",
- call, call->pri, call->pri->tei, call->pri->sapi);
- }
- } else if (call->pri->subchannel && BRI_TE_PTMP(ctrl)) {
- /*
- * Get the best available TEI value for the debug dump display.
- * We may not actually have a TEI assigned at the moment.
- */
- tei = call->pri->subchannel->tei;
- }
- q931_xmit(call->pri, tei, h, len, 1, uiframe);
+ "Sending message for call %p on call->link: %p with TEI/SAPI %d/%d\n",
+ call, call->link, call->link->tei, call->link->sapi);
+ }
+ }
+ q931_xmit(call->link, h, len, 1, uiframe);
call->acked = 1;
return 0;
}
static int maintenance_service_ies[] = { Q931_IE_CHANGE_STATUS, Q931_CHANNEL_IDENT, -1 };
-int maintenance_service_ack(struct pri *ctrl, q931_call *c)
+static int maintenance_service_ack(struct pri *ctrl, q931_call *c)
{
int pd = MAINTENANCE_PROTOCOL_DISCRIMINATOR_1;
int mt = ATT_SERVICE_ACKNOWLEDGE;
@@ -4629,6 +4662,9 @@
return send_message(ctrl, c, (pd << 8) | mt, maintenance_service_ies);
}
+/*!
+ * \note Maintenance service messages only supported in PRI mode.
+ */
int maintenance_service(struct pri *ctrl, int span, int channel, int changestatus)
{
struct q931_call *c;
@@ -5131,6 +5167,32 @@
static int restart_ies[] = { Q931_CHANNEL_IDENT, Q931_RESTART_INDICATOR, -1 };
+/*!
+ * \brief Send the RESTART message to the peer.
+ *
+ * \param ctrl D channel controller.
+ * \param channel Encoded channel id to use.
+ *
+ * \note
+ * Sending RESTART in NT PTMP mode is not supported at the
+ * present time.
+ *
+ * \note
+ * NT PTMP should broadcast the RESTART if there is a TEI
+ * allocated. Otherwise it should immediately ACK the RESTART
+ * itself to avoid the T316 timeout delay (2 minutes) since
+ * there might not be anything connected. The broadcast could
+ * be handled in a similar manner to the broadcast SETUP.
+ *
+ * \todo Need to implement T316 to protect against missing
+ * RESTART_ACKNOWLEDGE and STATUS messages.
+ *
+ * \todo NT PTMP mode should implement some protection from
+ * receiving a RESTART on channels in use by another TEI.
+ *
+ * \retval 0 on success.
+ * \retval -1 on error.
+ */
int q931_restart(struct pri *ctrl, int channel)
{
struct q931_call *c;
@@ -5952,9 +6014,6 @@
static void pri_create_fake_clearing(struct q931_call *c, struct pri *master)
{
- /* Point to the master so the timeout event can come out. */
- c->pri = master;
-
pri_schedule_del(master, c->retranstimer);
c->retranstimer = pri_schedule_event(master, 0, pri_fake_clearing, c);
}
@@ -6446,16 +6505,19 @@
}
}
-static struct q931_call *q931_get_subcall(struct pri *ctrl, struct q931_call *master_call)
+static struct q931_call *q931_get_subcall(struct pri *link, struct q931_call *master_call)
{
int i;
struct q931_call *cur;
+ struct pri *ctrl;
int firstfree = -1;
+
+ ctrl = PRI_MASTER(link);
/* First try to locate our subcall */
for (i = 0; i < ARRAY_LEN(master_call->subcalls); ++i) {
if (master_call->subcalls[i]) {
- if (master_call->subcalls[i]->pri == ctrl) {
+ if (master_call->subcalls[i]->link == link) {
return master_call->subcalls[i];
}
} else if (firstfree == -1) {
@@ -6475,7 +6537,8 @@
return NULL;
}
*cur = *master_call;
- cur->pri = ctrl;
+ //cur->pri = ctrl;/* We get this assignment for free. */
+ cur->link = link;
cur->next = NULL;
cur->apdus = NULL;
cur->bridged_call = NULL;
@@ -6495,16 +6558,17 @@
if (ctrl->debug & PRI_DEBUG_Q931_STATE) {
pri_message(ctrl, "Adding subcall %p for TEI %d to call %p at position %d\n",
- cur, ctrl->tei, master_call, firstfree);
+ cur, link->tei, master_call, firstfree);
}
/* Should only get here if the TEI is not found */
return cur;
}
-int q931_receive(struct pri *ctrl, int tei, q931_h *h, int len)
+int q931_receive(struct pri *link, q931_h *h, int len)
{
q931_mh *mh;
struct q931_call *c;
+ struct pri *ctrl;
q931_ie *ie;
unsigned int x;
int y;
@@ -6518,6 +6582,7 @@
int allow_event;
int allow_posthandle;
+ ctrl = PRI_MASTER(link);
memset(last_ie, 0, sizeof(last_ie));
#ifdef LIBPRI_COUNTERS
ctrl->q931_rxcount++;
@@ -6537,7 +6602,7 @@
KLUDGE this by changing byte 4 from a 0xf (SERVICE)
to a 0x7 (SERVICE ACKNOWLEDGE) */
h->raw[h->crlen + 2] -= 0x8;
- q931_xmit(ctrl, ctrl->tei, h, len, 1, 0);
+ q931_xmit(link, h, len, 1, 0);
return 0;
}
break;
@@ -6552,13 +6617,13 @@
}
cref = q931_cr(h);
- c = q931_getcall(ctrl, cref);
+ c = q931_getcall(link, cref);
if (!c) {
pri_error(ctrl, "Unable to locate call %d\n", cref);
return -1;
}
- if (c->master_call->outboundbroadcast && ctrl != PRI_MASTER(ctrl)) {
- c = q931_get_subcall(ctrl, c->master_call);
+ if (c->master_call->outboundbroadcast && link != ctrl) {
+ c = q931_get_subcall(link, c->master_call);
if (!c) {
pri_error(ctrl, "Unable to locate subcall for %d\n", cref);
return -1;
@@ -6567,10 +6632,8 @@
if (ctrl->debug & PRI_DEBUG_Q931_STATE) {
pri_message(ctrl,
- "Received message for call %p on %p TEI/SAPI %d/%d, call->pri is %p TEI/SAPI %d/%d\n",
- c,
- ctrl, ctrl->tei, ctrl->sapi,
- c->pri, c->pri->tei, c->pri->sapi);
+ "Received message for call %p on link %p TEI/SAPI %d/%d\n",
+ c, link, link->tei, link->sapi);
}
/* Preliminary handling */
@@ -8456,10 +8519,6 @@
struct q931_call *c = data;
struct pri *ctrl = c->pri;
- /* Point to the master so the timeout event can come out. */
- ctrl = PRI_MASTER(ctrl);
- c->pri = ctrl;
-
if (ctrl->debug & PRI_DEBUG_Q931_STATE)
pri_message(ctrl, "T309 timed out waiting for data link re-establishment\n");
@@ -8475,10 +8534,6 @@
struct q931_call *c = data;
struct pri *ctrl = c->pri;
- /* Point to the master so the timeout event can come out. */
- ctrl = PRI_MASTER(ctrl);
- c->pri = ctrl;
-
if (ctrl->debug & PRI_DEBUG_Q931_STATE)
pri_message(ctrl, "Cancel call after data link failure\n");
@@ -8549,11 +8604,6 @@
if (ctrl->debug & PRI_DEBUG_Q931_STATE) {
pri_message(ctrl, "TEI=%d DL event: %s(%d)\n", link->tei,
q931_dl_event2str(event), event);
- }
-
- if (BRI_TE_PTMP(ctrl)) {
- /* The link is always the master */
- link = ctrl;
}
switch (event) {
@@ -8569,15 +8619,11 @@
* removed TEI.
*/
for (cur = *ctrl->callpool; cur; cur = cur->next) {
- if (!(cur->cr & ~Q931_CALL_REFERENCE_FLAG)) {
- /* Don't do anything on the global call reference call record. */
- continue;
- }
if (cur->outboundbroadcast) {
/* Does this master call have a subcall on the link that went down? */
call = NULL;
for (idx = 0; idx < ARRAY_LEN(cur->subcalls); ++idx) {
- if (cur->subcalls[idx] && cur->subcalls[idx]->pri == link) {
+ if (cur->subcalls[idx] && cur->subcalls[idx]->link == link) {
/* This subcall is on the link that went down. */
call = cur->subcalls[idx];
break;
@@ -8587,11 +8633,21 @@
/* No subcall is on the link that went down. */
continue;
}
- } else if (cur->pri != link) {
+ } else if (cur->link != link) {
/* This call is not on the link that went down. */
continue;
} else {
call = cur;
+ }
+
+ if (!(cur->cr & ~Q931_CALL_REFERENCE_FLAG)) {
+ /* Simply destroy the global call reference call record. */
+ if (ctrl->debug & PRI_DEBUG_Q931_STATE) {
+ pri_message(ctrl, "TEI=%d Destroying global call record\n",
+ link->tei);
+ }
+ q931_destroycall(ctrl, call);
+ continue;
}
/*
@@ -8605,7 +8661,7 @@
call->cr, call->channelno, call->ourcallstate,
q931_call_state_str(call->ourcallstate));
}
- call->pri = ctrl;/* Point to a safer place until the call is destroyed. */
+ call->link = NULL;
pri_schedule_del(ctrl, call->retranstimer);
call->retranstimer = pri_schedule_event(ctrl, 0, pri_dl_down_cancelcall,
call);
@@ -8622,7 +8678,7 @@
/* Does this master call have a subcall on the link that went down? */
call = NULL;
for (idx = 0; idx < ARRAY_LEN(cur->subcalls); ++idx) {
- if (cur->subcalls[idx] && cur->subcalls[idx]->pri == link) {
+ if (cur->subcalls[idx] && cur->subcalls[idx]->link == link) {
/* This subcall is on the link that went down. */
call = cur->subcalls[idx];
break;
@@ -8632,7 +8688,7 @@
/* No subcall is on the link that went down. */
continue;
}
- } else if (cur->pri != link) {
+ } else if (cur->link != link) {
/* This call is not on the link that went down. */
continue;
} else {
@@ -8704,7 +8760,7 @@
/* Does this master call have a subcall on the link that came up? */
call = NULL;
for (idx = 0; idx < ARRAY_LEN(cur->subcalls); ++idx) {
- if (cur->subcalls[idx] && cur->subcalls[idx]->pri == link) {
+ if (cur->subcalls[idx] && cur->subcalls[idx]->link == link) {
/* This subcall is on the link that came up. */
call = cur->subcalls[idx];
break;
@@ -8714,7 +8770,7 @@
/* No subcall is on the link that came up. */
continue;
}
- } else if (cur->pri != link) {
+ } else if (cur->link != link) {
/* This call is not on the link that came up. */
continue;
} else {
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