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freetdm: ss7 - more work on glare handling

This commit is contained in:
Konrad Hammel 2010-09-03 10:33:13 -04:00
parent ceddc5b84f
commit 772a3f815a
1 changed files with 20 additions and 14 deletions
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34
libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_handle.c
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@ -78,8 +78,8 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
{
SS7_FUNC_TRACE_ENTER(__FUNCTION__);
sngss7_chan_data_t *sngss7_info ;
ftdm_channel_t *ftdmchan;
sngss7_chan_data_t *sngss7_info = NULL;
ftdm_channel_t *ftdmchan = NULL;
/* get the ftdmchan and ss7_chan_data from the circuit */
if (extract_chan_data(circuit, &sngss7_info, &ftdmchan)) {
@ -121,14 +121,14 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
/* check whether the ftdm channel is in a state to accept a call */
switch (ftdmchan->state) {
/**************************************************************************/
case (FTDM_CHANNEL_STATE_DOWN): /* only state it is fully valid to get IAM */
case (FTDM_CHANNEL_STATE_DOWN): /* only state it is valid to get IAM (except if there is glare */
/* fill in the channels SS7 Stack information */
sngss7_info->suInstId = get_unique_id();
sngss7_info->spInstId = spInstId;
/* try to open the ftdm channel */
if (ftdm_channel_open_chan(ftdmchan) != FTDM_SUCCESS) {
/* check if there is any reason why we can't use this channel */
if (ftdm_test_flag(ftdmchan, FTDM_CHANNEL_INUSE)) {
/* channel is already requested for use by the ftdm core */
goto handle_glare;
} else if(ftdm_channel_open_chan(ftdmchan) != FTDM_SUCCESS) {
/* channel is not inuse but we can't open it...fail the call */
SS7_ERROR("Failed to open span: %d, chan: %d\n",
ftdmchan->physical_span_id,
ftdmchan->physical_chan_id);
@ -143,6 +143,10 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
} else {
/* fill in the channels SS7 Stack information */
sngss7_info->suInstId = get_unique_id();
sngss7_info->spInstId = spInstId;
/* fill in calling party information */
if (siConEvnt->cgPtyNum.eh.pres) {
if (siConEvnt->cgPtyNum.addrSig.pres) {
@ -211,7 +215,7 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
/* set the state of the channel to collecting...the rest is done by the chan monitor */
ftdm_set_state_locked(ftdmchan, FTDM_CHANNEL_STATE_COLLECT);
} /* if (ftdm_channel_open_chan(ftdmchan) != FTDM_SUCCESS) */
} /* if (channel is usable */
break;
/**************************************************************************/
@ -219,8 +223,11 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
case (FTDM_CHANNEL_STATE_TERMINATING):
case (FTDM_CHANNEL_STATE_HANGUP):
case (FTDM_CHANNEL_STATE_HANGUP_COMPLETE):
SS7_INFO_CHAN(ftdmchan, "Got IAM on channel in %s state...glare!\n", ftdm_channel_state2str (ftdmchan->state));
handle_glare:
/* the core already has plans for this channel...glare */
SS7_INFO_CHAN(ftdmchan, "Got IAM on channel that is already inuse (state=%s|inuse=%d)...glare!\n",
ftdm_channel_state2str (ftdmchan->state),
ftdm_test_flag(ftdmchan, FTDM_CHANNEL_INUSE));
/* save the info so that we can use it later on */
sngss7_info->glare.spInstId = spInstId;
@ -239,8 +246,7 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
/* move the state of the channel to Terminating to end the call */
ftdm_set_state_locked(ftdmchan, FTDM_CHANNEL_STATE_TERMINATING);
}
} /* if (!(sngss7_test_flag(sngss7_info, FLAG_GLARE))) */
break;
/**************************************************************************/
default: /* should not have gotten an IAM while in this state */