Reduce the amount of database access for HAVE_PRI_SERVICE_MESSAGES.

Rework HAVE_PRI_SERVICE_MESSAGES to not use the active values directly
from the database.  Database access is likely expensive.  Database access
now only happens on initialization, destruction, and when the B channel is
taken in or out of service.

This change is not related to call waiting but it would cause the search
for a call waiting interface to be very expensive and slow down D channel
message servicing.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@251538 65c4cc65-6c06-0410-ace0-fbb531ad65f3
certified/1.8.6
Richard Mudgett 15 years ago
parent c1e33534a5
commit ee5e65194f

@ -975,7 +975,6 @@ struct dahdi_pvt {
#if defined(HAVE_PRI)
struct sig_pri_pri *pri;
int prioffset;
int logicalspan;
#endif
#if defined(HAVE_PRI) || defined(HAVE_SS7)
@ -5170,9 +5169,11 @@ static void destroy_all_channels(void)
p = iflist;
chan = p->channel;
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
{
char db_chan_name[20], db_answer[5], state;
char db_chan_name[20];
char db_answer[5];
char state;
int why = -1;
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, p->span, chan);
@ -5184,7 +5185,7 @@ static void destroy_all_channels(void)
ast_db_del(db_chan_name, SRVST_DBKEY);
}
}
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
/* Free associated memory */
destroy_dahdi_pvt(p);
ast_verb(3, "Unregistered channel %d\n", chan);
@ -11422,9 +11423,9 @@ static struct dahdi_pvt *mkintf(int channel, const struct dahdi_chan_conf *conf,
pris[span].pri.overlapdial = conf->pri.pri.overlapdial;
pris[span].pri.qsigchannelmapping = conf->pri.pri.qsigchannelmapping;
pris[span].pri.discardremoteholdretrieval = conf->pri.pri.discardremoteholdretrieval;
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
pris[span].pri.enable_service_message_support = conf->pri.pri.enable_service_message_support;
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
#ifdef HAVE_PRI_INBANDDISCONNECT
pris[span].pri.inbanddisconnect = conf->pri.pri.inbanddisconnect;
#endif
@ -11446,12 +11447,6 @@ static struct dahdi_pvt *mkintf(int channel, const struct dahdi_chan_conf *conf,
for (x = 0; x < PRI_MAX_TIMERS; x++) {
pris[span].pri.pritimers[x] = conf->pri.pri.pritimers[x];
}
if (si.spanno != span + 1) { /* in another trunkgroup */
tmp->prioffset = pris[span].pri.numchans;
} else {
tmp->prioffset = p.chanpos;
}
} else {
ast_log(LOG_ERROR, "Channel %d is reserved for D-channel.\n", p.chanpos);
destroy_dahdi_pvt(tmp);
@ -11753,17 +11748,35 @@ static struct dahdi_pvt *mkintf(int channel, const struct dahdi_chan_conf *conf,
case SIG_PRI_LIB_HANDLE_CASES:
case SIG_SS7:
tmp->inservice = 0;
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
((struct sig_pri_chan *) tmp->sig_pvt)->service_status = 0;
if (chan_sig == SIG_PRI) {
char db_chan_name[20], db_answer[5];
char db_chan_name[20];
char db_answer[5];
/*
* Initialize the active out-of-service status
* and delete any record if the feature is not enabled.
*/
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, tmp->span, tmp->channel);
if (ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
snprintf(db_answer, sizeof(db_answer), "%s:%d", SRVST_TYPE_OOS, SRVST_INITIALIZED);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
unsigned *why;
why = &((struct sig_pri_chan *) tmp->sig_pvt)->service_status;
if (tmp->pri->enable_service_message_support) {
char state;
sscanf(db_answer, "%1c:%30u", &state, why);
/* Ensure that only the implemented bits could be set.*/
*why &= (SRVST_NEAREND | SRVST_FAREND);
}
if (!*why) {
ast_db_del(db_chan_name, SRVST_DBKEY);
}
}
}
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
break;
default:
/* We default to in service on protocols that don't have a reset */
@ -13489,16 +13502,15 @@ static char *handle_pri_debug(struct ast_cli_entry *e, int cmd, struct ast_cli_a
}
#endif /* defined(HAVE_PRI) */
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
static char *handle_pri_service_generic(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a, int changestatus)
{
int why;
unsigned *why;
int channel;
int trunkgroup;
int x, y, fd = a->fd;
int interfaceid = 0;
char *c;
char state;
char db_chan_name[20], db_answer[5];
struct dahdi_pvt *tmp;
struct dahdi_pri *pri;
@ -13550,38 +13562,33 @@ static char *handle_pri_service_generic(struct ast_cli_entry *e, int cmd, struct
ast_mutex_lock(&iflock);
for (tmp = iflist; tmp; tmp = tmp->next) {
if (tmp->pri && tmp->channel == channel) {
ast_mutex_unlock(&iflock);
ast_mutex_lock(&tmp->pri->lock);
if (!tmp->pri->enable_service_message_support) {
ast_mutex_unlock(&iflock);
ast_mutex_unlock(&tmp->pri->lock);
ast_cli(fd,
"\n\tThis operation has not been enabled in chan_dahdi.conf, set 'service_message_support=yes' to use this operation.\n"
"\tNote only 4ESS and 5ESS switch types are supported.\n\n");
return CLI_SUCCESS;
}
why = -1;
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, tmp->span, channel);
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%1c:%30d", &state, &why);
ast_db_del(db_chan_name, SRVST_DBKEY);
}
why = &((struct sig_pri_chan *) tmp->sig_pvt)->service_status;
switch(changestatus) {
case 0: /* enable */
if (why > -1) {
if (why & SRVST_FAREND) {
why = SRVST_FAREND;
snprintf(db_answer, sizeof(db_answer), "%s:%d", SRVST_TYPE_OOS, why);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
ast_debug(2, "channel '%d' service state { near: in-service, far: out-of-service }\n", channel);
}
/* Near end wants to be in service now. */
ast_db_del(db_chan_name, SRVST_DBKEY);
*why &= ~SRVST_NEAREND;
if (*why) {
snprintf(db_answer, sizeof(db_answer), "%s:%u", SRVST_TYPE_OOS, *why);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
}
break;
/* case 1: -- loop */
case 2: /* disable */
if (why == -1) {
why = SRVST_NEAREND;
} else {
why |= SRVST_NEAREND;
}
snprintf(db_answer, sizeof(db_answer), "%s:%d", SRVST_TYPE_OOS, why);
/* Near end wants to be out-of-service now. */
ast_db_del(db_chan_name, SRVST_DBKEY);
*why |= SRVST_NEAREND;
snprintf(db_answer, sizeof(db_answer), "%s:%u", SRVST_TYPE_OOS, *why);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
break;
/* case 3: -- continuity */
@ -13590,8 +13597,6 @@ static char *handle_pri_service_generic(struct ast_cli_entry *e, int cmd, struct
ast_log(LOG_WARNING, "Unsupported changestatus: '%d'\n", changestatus);
break;
}
ast_mutex_unlock(&iflock);
ast_mutex_lock(&tmp->pri->lock);
pri_maintenance_bservice(tmp->pri->pri, tmp->sig_pvt, changestatus);
ast_mutex_unlock(&tmp->pri->lock);
return CLI_SUCCESS;
@ -13636,7 +13641,7 @@ static char *handle_pri_service_disable_channel(struct ast_cli_entry *e, int cmd
}
return handle_pri_service_generic(e, cmd, a, 2);
}
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
#if defined(HAVE_PRI)
static char *handle_pri_show_spans(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
@ -13766,10 +13771,10 @@ static char *handle_pri_version(struct ast_cli_entry *e, int cmd, struct ast_cli
#if defined(HAVE_PRI)
static struct ast_cli_entry dahdi_pri_cli[] = {
AST_CLI_DEFINE(handle_pri_debug, "Enables PRI debugging on a span"),
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
AST_CLI_DEFINE(handle_pri_service_enable_channel, "Return a channel to service"),
AST_CLI_DEFINE(handle_pri_service_disable_channel, "Remove a channel from service"),
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
AST_CLI_DEFINE(handle_pri_show_spans, "Displays PRI Information"),
AST_CLI_DEFINE(handle_pri_show_span, "Displays PRI Information"),
AST_CLI_DEFINE(handle_pri_show_debug, "Displays current PRI debug settings"),
@ -16422,14 +16427,14 @@ static int process_dahdi(struct dahdi_chan_conf *confp, const char *cat, struct
#endif
} else if (!strcasecmp(v->name, "discardremoteholdretrieval")) {
confp->pri.pri.discardremoteholdretrieval = ast_true(v->value);
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
} else if (!strcasecmp(v->name, "service_message_support")) {
/* assuming switchtype for this channel group has been configured already */
if ((confp->pri.pri.switchtype == PRI_SWITCH_ATT4ESS || confp->pri.pri.switchtype == PRI_SWITCH_LUCENT5E) && ast_true(v->value))
confp->pri.pri.enable_service_message_support = 1;
else
confp->pri.pri.enable_service_message_support = 0;
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
#ifdef HAVE_PRI_INBANDDISCONNECT
} else if (!strcasecmp(v->name, "inbanddisconnect")) {
confp->pri.pri.inbanddisconnect = ast_true(v->value);

@ -1059,9 +1059,9 @@ static void apply_plan_to_number(char *buf, size_t size, const struct sig_pri_pr
/*! \note Assumes the pri->lock is already obtained. */
static int pri_check_restart(struct sig_pri_pri *pri)
{
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
tryanotherpos:
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
do {
pri->resetpos++;
} while (pri->resetpos < pri->numchans
@ -1070,23 +1070,16 @@ tryanotherpos:
|| pri->pvts[pri->resetpos]->call
|| pri->pvts[pri->resetpos]->resetting));
if (pri->resetpos < pri->numchans) {
#ifdef HAVE_PRI_SERVICE_MESSAGES
char db_chan_name[20], db_answer[5], state;
int why;
/* check if the channel is out of service */
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, pri->span, pri->pvts[pri->resetpos]->channel);
/* if so, try next channel */
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%1c:%30d", &state, &why);
if (why) {
ast_log(LOG_NOTICE, "span '%d' channel '%d' out-of-service (reason: %s), not sending RESTART\n", pri->span,
pri->pvts[pri->resetpos]->channel, (why & SRVST_FAREND) ? (why & SRVST_NEAREND) ? "both ends" : "far end" : "near end");
goto tryanotherpos;
}
#if defined(HAVE_PRI_SERVICE_MESSAGES)
unsigned why;
why = pri->pvts[pri->resetpos]->service_status;
if (why) {
ast_log(LOG_NOTICE, "span '%d' channel '%d' out-of-service (reason: %s), not sending RESTART\n", pri->span,
pri->pvts[pri->resetpos]->channel, (why & SRVST_FAREND) ? (why & SRVST_NEAREND) ? "both ends" : "far end" : "near end");
goto tryanotherpos;
}
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
/* Mark the channel as resetting and restart it */
pri->pvts[pri->resetpos]->resetting = 1;
@ -2149,35 +2142,28 @@ static void *pri_dchannel(void *vpri)
ast_log(LOG_WARNING, "Restart requested on odd/unavailable channel number %d/%d on span %d\n",
PRI_SPAN(e->restart.channel), PRI_CHANNEL(e->restart.channel), pri->span);
else {
#ifdef HAVE_PRI_SERVICE_MESSAGES
char db_chan_name[20], db_answer[5], state;
int why, skipit = 0;
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, pri->span, pri->pvts[chanpos]->channel);
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%1c:%30d", &state, &why);
if (why) {
ast_log(LOG_NOTICE, "span '%d' channel '%d' out-of-service (reason: %s), ignoring RESTART\n", pri->span,
PRI_CHANNEL(e->restart.channel), (why & SRVST_FAREND) ? (why & SRVST_NEAREND) ? "both ends" : "far end" : "near end");
skipit = 1;
} else {
ast_db_del(db_chan_name, SRVST_DBKEY);
}
int skipit = 0;
#if defined(HAVE_PRI_SERVICE_MESSAGES)
unsigned why;
why = pri->pvts[chanpos]->service_status;
if (why) {
ast_log(LOG_NOTICE,
"span '%d' channel '%d' out-of-service (reason: %s), ignoring RESTART\n",
pri->span, PRI_CHANNEL(e->restart.channel),
(why & SRVST_FAREND) ? (why & SRVST_NEAREND) ? "both ends" : "far end" : "near end");
skipit = 1;
}
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
sig_pri_lock_private(pri->pvts[chanpos]);
#ifdef HAVE_PRI_SERVICE_MESSAGES
if (!skipit) {
#endif
ast_verb(3, "B-channel %d/%d restarted on span %d\n",
PRI_SPAN(e->restart.channel), PRI_CHANNEL(e->restart.channel), pri->span);
if (pri->pvts[chanpos]->call) {
pri_destroycall(pri->pri, pri->pvts[chanpos]->call);
pri->pvts[chanpos]->call = NULL;
}
#ifdef HAVE_PRI_SERVICE_MESSAGES
}
#endif
/* Force soft hangup if appropriate */
if (pri->pvts[chanpos]->owner)
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
@ -2257,43 +2243,43 @@ static void *pri_dchannel(void *vpri)
}
}
break;
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
case PRI_EVENT_SERVICE:
chanpos = pri_find_principle(pri, e->service.channel, NULL);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Received service change status %d on unconfigured channel %d/%d span %d\n",
e->service_ack.changestatus, PRI_SPAN(e->service_ack.channel), PRI_CHANNEL(e->service_ack.channel), pri->span);
} else {
char db_chan_name[20], db_answer[5], state;
int ch, why = -1;
char db_chan_name[20];
char db_answer[5];
int ch;
unsigned *why;
ch = pri->pvts[chanpos]->channel;
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, pri->span, ch);
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%1c:%30d", &state, &why);
ast_db_del(db_chan_name, SRVST_DBKEY);
}
why = &pri->pvts[chanpos]->service_status;
switch (e->service.changestatus) {
case 0: /* in-service */
if (why > -1) {
if (why & SRVST_NEAREND) {
snprintf(db_answer, sizeof(db_answer), "%s:%d", SRVST_TYPE_OOS, SRVST_NEAREND);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
ast_debug(2, "channel '%d' service state { near: out-of-service, far: in-service }\n", ch);
}
/* Far end wants to be in service now. */
ast_db_del(db_chan_name, SRVST_DBKEY);
*why &= ~SRVST_FAREND;
if (*why) {
snprintf(db_answer, sizeof(db_answer), "%s:%u",
SRVST_TYPE_OOS, *why);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
}
break;
case 2: /* out-of-service */
if (why == -1) {
why = SRVST_FAREND;
} else {
why |= SRVST_FAREND;
}
snprintf(db_answer, sizeof(db_answer), "%s:%d", SRVST_TYPE_OOS, why);
/* Far end wants to be out-of-service now. */
ast_db_del(db_chan_name, SRVST_DBKEY);
*why |= SRVST_FAREND;
snprintf(db_answer, sizeof(db_answer), "%s:%u", SRVST_TYPE_OOS,
*why);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
break;
default:
ast_log(LOG_ERROR, "Huh? changestatus is: %d\n", e->service.changestatus);
break;
}
ast_log(LOG_NOTICE, "Channel %d/%d span %d (logical: %d) received a change of service message, status '%d'\n",
PRI_SPAN(e->service.channel), PRI_CHANNEL(e->service.channel), pri->span, ch, e->service.changestatus);
@ -2309,7 +2295,7 @@ static void *pri_dchannel(void *vpri)
PRI_SPAN(e->service_ack.channel), PRI_CHANNEL(e->service_ack.channel), pri->span, e->service_ack.changestatus);
}
break;
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
case PRI_EVENT_RING:
if (!ast_strlen_zero(pri->msn_list)
&& !sig_pri_msn_match(pri->msn_list, e->ring.callednum)) {
@ -3881,16 +3867,9 @@ int sig_pri_available(struct sig_pri_chan *p, int *reason)
{
/* If no owner and interface has a B channel then likely available */
if (!p->owner && !p->no_b_channel && p->pri) {
#ifdef HAVE_PRI_SERVICE_MESSAGES
char db_chan_name[20], db_answer[5], state;
int why = 0;
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, p->pri->span, p->channel);
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%1c:%30d", &state, &why);
}
if (p->resetting || p->call || why) {
if (why) {
#if defined(HAVE_PRI_SERVICE_MESSAGES)
if (p->resetting || p->call || p->service_status) {
if (p->service_status) {
*reason = AST_CAUSE_REQUESTED_CHAN_UNAVAIL;
}
return 0;
@ -3899,7 +3878,7 @@ int sig_pri_available(struct sig_pri_chan *p, int *reason)
if (p->resetting || p->call) {
return 0;
}
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
return 1;
}
@ -3951,11 +3930,11 @@ int sig_pri_start_pri(struct sig_pri_pri *pri)
break;
default:
pri->dchans[i] = pri_new(pri->fds[i], pri->nodetype, pri->switchtype);
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
if (pri->enable_service_message_support) {
pri_set_service_message_support(pri->dchans[i], 1);
}
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
break;
}
@ -4174,7 +4153,7 @@ int pri_send_callrerouting_facility_exec(struct sig_pri_chan *p, enum ast_channe
return res;
}
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
int pri_maintenance_bservice(struct pri *pri, struct sig_pri_chan *p, int changestatus)
{
int channel = PVT_TO_CHANNEL(p);
@ -4182,7 +4161,7 @@ int pri_maintenance_bservice(struct pri *pri, struct sig_pri_chan *p, int change
return pri_maintenance_service(pri, span, channel, changestatus);
}
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
void sig_pri_fixup(struct ast_channel *oldchan, struct ast_channel *newchan, struct sig_pri_chan *pchan)
{

@ -97,7 +97,7 @@ struct sig_pri_callback {
#define DAHDI_OVERLAPDIAL_INCOMING 2
#define DAHDI_OVERLAPDIAL_BOTH (DAHDI_OVERLAPDIAL_INCOMING|DAHDI_OVERLAPDIAL_OUTGOING)
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
/*! \brief Persistent Service State */
#define SRVST_DBKEY "service-state"
/*! \brief The out-of-service SERVICE state */
@ -117,7 +117,7 @@ struct sig_pri_callback {
/*! \brief The AstDB family */
static const char dahdi_db[] = "dahdi/registry";
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
struct sig_pri_chan {
/* Options to be set by user */
@ -173,6 +173,10 @@ struct sig_pri_chan {
int prioffset; /*!< channel number in span */
int logicalspan; /*!< logical span number within trunk group */
int mastertrunkgroup; /*!< what trunk group is our master */
#if defined(HAVE_PRI_SERVICE_MESSAGES)
/*! \brief Active SRVST_DBKEY out-of-service status value. */
unsigned service_status;
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
struct sig_pri_callback *calls;
void *chan_pvt; /*!< Private structure of the user of this module. */
@ -190,9 +194,9 @@ struct sig_pri_pri {
int facilityenable; /*!< Enable facility IEs */
int dchan_logical_span[NUM_DCHANS]; /*!< Logical offset the DCHAN sits in */
int fds[NUM_DCHANS]; /*!< FD's for d-channels */
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
unsigned int enable_service_message_support:1; /*!< enable SERVICE message support */
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
#ifdef HAVE_PRI_INBANDDISCONNECT
unsigned int inbanddisconnect:1; /*!< Should we support inband audio after receiving DISCONNECT? */
#endif
@ -287,9 +291,9 @@ void sig_pri_cli_show_span(int fd, int *dchannels, struct sig_pri_pri *pri);
int pri_send_keypad_facility_exec(struct sig_pri_chan *p, const char *digits);
int pri_send_callrerouting_facility_exec(struct sig_pri_chan *p, enum ast_channel_state chanstate, const char *destination, const char *original, const char *reason);
#ifdef HAVE_PRI_SERVICE_MESSAGES
#if defined(HAVE_PRI_SERVICE_MESSAGES)
int pri_maintenance_bservice(struct pri *pri, struct sig_pri_chan *p, int changestatus);
#endif
#endif /* defined(HAVE_PRI_SERVICE_MESSAGES) */
void sig_pri_fixup(struct ast_channel *oldchan, struct ast_channel *newchan, struct sig_pri_chan *pchan);

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