ensure that acc_ramp_init() is only called once
There are plans to register signal handlers in acc_ramp_init(). Once we
do that, the acc_ramp_init() function should only be called once to
avoid duplicate signal handlers on the handler list.
However, the acc_ramp_init() function currently serves a dual-purpose:
1) Initialize the acc_ramp structure for a bts
2) Enable or disable ACC ramping
Add new functions to support use case 2, and call acc_ramp_init()
just once while reading the configuration file. The VTY commands
which enable/disable ACC ramping use the new APIs instead.
Also, rename acc_ramp_start() to acc_ramp_trigger() and tweak its
semantics so that it can always be called regardless of what the
current configuration settings are. This prepares us for triggering
ACC ramping upon events other than "RSL link-up".
Change-Id: Ia25bff85d9e5c277da76bffa11d31972e9fdc323
Related: OS2591
diff --git a/src/libbsc/acc_ramp.c b/src/libbsc/acc_ramp.c
index 5d35842..31122df 100644
--- a/src/libbsc/acc_ramp.c
+++ b/src/libbsc/acc_ramp.c
@@ -140,28 +140,20 @@
* Initialize an acc_ramp data structure.
* Storage for this structure must be provided by the caller.
*
- * If ACC ramping is enabled, all ACCs are denied by default.
- * A subsequent call to acc_ramp_start() will begin the ramping process.
- * If ACC ramping is disabled, all ACCs will be allowed by default,
- * and there is no need to do anything else.
+ * By default, ACC ramping is disabled and all ACCs are allowed.
*
* \param[in] acc_ramp Pointer to acc_ramp structure to be initialized.
- * \param[in] enable Indicates whether ACC ramping should be enabled or disabled.
* \param[in] bts BTS which uses this ACC ramp data structure.
*/
-void acc_ramp_init(struct acc_ramp *acc_ramp, bool enable, struct gsm_bts *bts)
+void acc_ramp_init(struct acc_ramp *acc_ramp, struct gsm_bts *bts)
{
acc_ramp->bts = bts;
- acc_ramp->acc_ramping_enabled = enable;
+ acc_ramp_set_enabled(acc_ramp, false);
acc_ramp->step_size = ACC_RAMP_STEP_SIZE_DEFAULT;
acc_ramp->step_interval_sec = ACC_RAMP_STEP_INTERVAL_MIN;
acc_ramp->step_interval_is_fixed = false;
+ allow_all_enabled_accs(acc_ramp);
osmo_timer_setup(&acc_ramp->step_timer, do_acc_ramping_step, acc_ramp);
-
- if (acc_ramp->acc_ramping_enabled)
- barr_all_enabled_accs(acc_ramp);
- else
- allow_all_enabled_accs(acc_ramp);
}
/*!
@@ -211,27 +203,33 @@
}
/*!
- * Begin the ramping process. Perform at least one ramping step to allow 'step_size' ACCs.
- * If 'step_size' is ACC_RAMP_STEP_SIZE_MAX, all ACCs will be allowed immediately.
+ * Determine if ACC ramping should be started according to configuration, and
+ * if ACC ramping is enabled, begin the ramping process.
+ * Perform at least one ramping step to allow 'step_size' ACCs.
+ * If 'step_size' is ACC_RAMP_STEP_SIZE_MAX, or if ACC ramping is disabled,
+ * all ACCs will be allowed immediately.
* \param[in] acc_ramp Pointer to acc_ramp structure.
*/
-void acc_ramp_start(struct acc_ramp *acc_ramp)
+void acc_ramp_trigger(struct acc_ramp *acc_ramp)
{
- /* Abort any previously running ramping process. */
+ /* Abort any previously running ramping process and allow all available ACCs. */
acc_ramp_abort(acc_ramp);
- /* Set all availble ACCs to barred and start ramping up. */
- barr_all_enabled_accs(acc_ramp);
- do_acc_ramping_step(acc_ramp);
+ if (acc_ramp_is_enabled(acc_ramp)) {
+ /* Set all available ACCs to barred and start ramping up. */
+ barr_all_enabled_accs(acc_ramp);
+ do_acc_ramping_step(acc_ramp);
+ }
}
/*!
- * Abort the ramping process. If ramping is disabled or has already finished,
- * then this function has no effect.
+ * Abort the ramping process and allow all available ACCs immediately.
* \param[in] acc_ramp Pointer to acc_ramp structure.
*/
void acc_ramp_abort(struct acc_ramp *acc_ramp)
{
if (osmo_timer_pending(&acc_ramp->step_timer))
osmo_timer_del(&acc_ramp->step_timer);
+
+ allow_all_enabled_accs(acc_ramp);
}