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Partial support for dynamic interfaces with NFAS.

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To have some support for dynamic interfaces, the master NFAS D channel
control structure will always exist even if it is abandoned/deleted by the
upper layer.  The master/slave pointers ensure that the correct master
will be used.


git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@2078 2fbb986a-6c06-0410-b554-c9c1f0a7f128
This commit is contained in:
Richard Mudgett 2010-10-21 17:32:39 +00:00
parent f9c3c8d026
commit 5923df047d
2 changed files with 55 additions and 4 deletions
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40
pri.c
View File

@ -1646,11 +1646,43 @@ int pri_set_crv(struct pri *pri, q931_call *call, int crv, int callmode)
void pri_enslave(struct pri *master, struct pri *slave)
{
if (master && slave) {
slave->callpool = &master->localpool;
slave->nfas = 1;
master->nfas = 1;
if (!master || !slave) {
return;
}
if (slave->master) {
struct pri *swp;
/* The slave already has a master */
if (master->master || master->slave) {
/* The new master has a master or it already has slaves. */
return;
}
/* Swap master and slave. */
swp = master;
master = slave;
slave = master;
}
/*
* To have some support for dynamic interfaces, the master NFAS
* D channel control structure will always exist even if it is
* abandoned/deleted by the upper layer. The master/slave
* pointers ensure that the correct master will be used.
*/
master = PRI_NFAS_MASTER(master);
master->nfas = 1;
slave->nfas = 1;
slave->callpool = &master->localpool;
/* Link the slave to the master on the end of the master's list. */
slave->master = master;
slave->slave = NULL;
for (; master->slave; master = master->slave) {
}
master->slave = slave;
}
struct pri_sr *pri_sr_new(void)

19
pri_internal.h
View File

@ -76,6 +76,10 @@ struct pri {
void *userdata;
/*! Accumulated pri_message() line. (Valid in master record only) */
struct pri_msg_line *msg_line;
/*! NFAS master/primary channel if appropriate */
struct pri *master;
/*! Next NFAS slaved D channel if appropriate */
struct pri *slave;
struct {
/*! Dynamically allocated array of timers that can grow as needed. */
struct pri_sched *timer;
@ -951,6 +955,21 @@ int pri_cc_event(struct pri *ctrl, q931_call *call, struct pri_cc_record *cc_rec
int q931_cc_timeout(struct pri *ctrl, struct pri_cc_record *cc_record, enum CC_EVENTS event);
void q931_cc_indirect(struct pri *ctrl, struct pri_cc_record *cc_record, void (*func)(struct pri *ctrl, q931_call *call, struct pri_cc_record *cc_record));
/*!
* \brief Get the NFAS master PRI control structure.
*
* \param ctrl D channel controller.
*
* \return NFAS master PRI control structure.
*/
static inline struct pri *PRI_NFAS_MASTER(struct pri *ctrl)
{
while (ctrl->master) {
ctrl = ctrl->master;
}
return ctrl;
}
/*!
* \brief Determine if layer 2 is in BRI NT PTMP mode.
*