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freetdm/libpri: Add support to change status of an individual channel or multiple channel. This allow to put bchannel out of service on an active T1 without affecting active call. Allow graceful out of service of T1 trunk. 

NOTE: There is bugs in libpri, even latest 1.4.12 as of this writing if you use NI2.   So rightnow it only work in DMS100/ATT mode.  Email me to get the NI2 patch (really stupid error).
NOTE2: The way libpri is build doesn't allow to do advance feature with the SERVICE feature, so if you put an channel out of service, and the far end send an restart, it will be bring back in service.  Lot of changes in libpri is required to allow this.  I need to figure out what would be the best steps to take since I don't have commit access to libpri release.
NOTE3: You need to enable this feature by setting service_message_support to true on the span
This commit is contained in:
Marc Olivier Chouinard 2011-08-05 22:50:58 -04:00
parent 53b0ecce60
commit 2ecf2d6e62
2 changed files with 114 additions and 0 deletions
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108
libs/freetdm/src/ftmod/ftmod_libpri/ftmod_libpri.c
View File

@ -204,6 +204,32 @@ static int parse_debug(const char *in, uint32_t *flags)
return res;
}
/**
* \brief Parses a change status string to flags
* \param in change status string to parse for
* \return Flags
*/
static int parse_change_status(const char *in)
{
int flags = 0;
if (!in) {
return 0;
}
if (strstr(in, "in_service") || strstr(in, "in")) {
flags = SERVICE_CHANGE_STATUS_INSERVICE;
}
if (strstr(in, "maintenance") || strstr(in, "maint")) {
flags = SERVICE_CHANGE_STATUS_MAINTENANCE;
}
if (strstr(in, "out_of_service") || strstr(in, "out")) {
flags = SERVICE_CHANGE_STATUS_OUTOFSERVICE;
}
return flags;
}
static int print_debug(uint32_t flags, char *tmp, const int size)
{
int offset = 0;
@ -240,6 +266,9 @@ static ftdm_io_interface_t ftdm_libpri_interface;
static const char *ftdm_libpri_usage =
"Usage:\n"
"libpri kill <span>\n"
"libpri reset <span>\n"
"libpri restart <span> <channel/all>\n"
"libpri maintenance <span> <channel/all> <in/maint/out>\n"
"libpri debug <span> [all|none|flag,...flagN]\n"
"\n"
"Possible debug flags:\n"
@ -339,8 +368,78 @@ static FIO_API_FUNCTION(ftdm_libpri_api)
goto done;
}
}
if (!strcasecmp(argv[0], "reset")) {
ftdm_span_t *span = NULL;
if (ftdm_span_find_by_name(argv[1], &span) == FTDM_SUCCESS) {
ftdm_libpri_data_t *isdn_data = span->signal_data;
if (span->start != ftdm_libpri_start) {
stream->write_function(stream, "%s: -ERR invalid span.\n", __FILE__);
goto done;
}
pri_restart(isdn_data->spri.pri);
stream->write_function(stream, "%s: +OK reset.\n", __FILE__);
goto done;
} else {
stream->write_function(stream, "%s: -ERR invalid span.\n", __FILE__);
goto done;
}
}
if (!strcasecmp(argv[0], "restart") && argc == 3) {
ftdm_span_t *span = NULL;
if (ftdm_span_find_by_name(argv[1], &span) == FTDM_SUCCESS) {
ftdm_libpri_data_t *isdn_data = span->signal_data;
if (span->start != ftdm_libpri_start) {
stream->write_function(stream, "%s: -ERR invalid span.\n", __FILE__);
goto done;
}
if (!strcasecmp(argv[2], "all")) {
int j;
for(j = 1; j <= span->chan_count; j++) {
pri_reset(isdn_data->spri.pri, j);
ftdm_sleep(50);
}
} else {
pri_reset(isdn_data->spri.pri, atoi(argv[2]));
}
stream->write_function(stream, "%s: +OK restart set.\n", __FILE__);
goto done;
} else {
stream->write_function(stream, "%s: -ERR invalid span.\n", __FILE__);
goto done;
}
}
if (!strcasecmp(argv[0], "maintenance") && argc > 3) {
ftdm_span_t *span = NULL;
if (ftdm_span_find_by_name(argv[1], &span) == FTDM_SUCCESS) {
ftdm_libpri_data_t *isdn_data = span->signal_data;
if (span->start != ftdm_libpri_start) {
stream->write_function(stream, "%s: -ERR invalid span.\n", __FILE__);
goto done;
}
if (!isdn_data->service_message_support) {
stream->write_function(stream, "%s: -ERR service message support is disabled\n", __FILE__);
goto done;
}
if (!strcasecmp(argv[2], "all")) {
int j;
for(j = 1; j <= span->chan_count; j++) {
pri_maintenance_service(isdn_data->spri.pri, atoi(argv[1]), j, parse_change_status(argv[3]));
ftdm_sleep(50);
}
} else {
pri_maintenance_service(isdn_data->spri.pri, atoi(argv[1]), atoi(argv[2]), parse_change_status(argv[3]));
}
stream->write_function(stream, "%s: +OK change status set.\n", __FILE__);
goto done;
} else {
stream->write_function(stream, "%s: -ERR invalid span.\n", __FILE__);
goto done;
}
}
}
stream->write_function(stream, "%s: -ERR invalid command.\n", __FILE__);
done:
@ -1780,6 +1879,10 @@ static void *ftdm_libpri_run(ftdm_thread_t *me, void *obj)
pri_facility_enable(isdn_data->spri.pri);
}
#endif
/* Support the different switch of service status */
if (isdn_data->service_message_support) {
pri_set_service_message_support(isdn_data->spri.pri, 1 /* True */);
}
if (res == 0) {
LPWRAP_MAP_PRI_EVENT(isdn_data->spri, LPWRAP_PRI_EVENT_ANY, on_anything);
@ -2159,6 +2262,11 @@ static FIO_CONFIGURE_SPAN_SIGNALING_FUNCTION(ftdm_libpri_configure_span)
isdn_data->debug_mask = 0;
}
}
else if (!strcasecmp(var, "service_message_support")) {
if (ftdm_true(val)) {
isdn_data->service_message_support = 1;
}
}
else {
ftdm_log(FTDM_LOG_ERROR, "Unknown parameter '%s', aborting configuration\n", var);
snprintf(span->last_error, sizeof(span->last_error), "Unknown parameter [%s]", var);

6
libs/freetdm/src/ftmod/ftmod_libpri/ftmod_libpri.h
View File

@ -31,6 +31,11 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
typedef enum {
SERVICE_CHANGE_STATUS_INSERVICE = 0,
SERVICE_CHANGE_STATUS_MAINTENANCE = 1,
SERVICE_CHANGE_STATUS_OUTOFSERVICE = 2
} service_change_status_t;
#ifndef FTMOD_LIBPRI_H
#define FTMOD_LIBPRI_H
@ -69,6 +74,7 @@ struct ftdm_libpri_data {
int overlap; /*!< Overlap dial flags */
unsigned int layer1;
unsigned int ton;
unsigned int service_message_support;
lpwrap_pri_t spri;
};