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[bsc_init] When the RSL/OML connection drops, free all lchans 

Free all allocated channels on the TRX that failed, go through
lchan_free to signal higher layers and then force a reset of
the channel. Make the TRX and TS unusable by setting the operational
set to 0 (not really defined) which should be reset once the
RSL is coming up again.
This commit is contained in:
Holger Hans Peter Freyther 2010-04-15 11:21:02 +02:00
parent f8eff2e4b5
commit 135f797a37
3 changed files with 42 additions and 2 deletions
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1
openbsc/include/openbsc/chan_alloc.h
View File

@ -45,6 +45,7 @@ struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type);
/* Free a logical channel (SDCCH, TCH, ...) */
void lchan_free(struct gsm_lchan *lchan);
void lchan_reset(struct gsm_lchan *lchan);
/* Consider releasing the channel */
int lchan_auto_release(struct gsm_lchan *lchan);

29
openbsc/src/bsc_init.c
View File

@ -31,6 +31,7 @@
#include <openbsc/system_information.h>
#include <openbsc/paging.h>
#include <openbsc/signal.h>
#include <openbsc/chan_alloc.h>
#include <osmocore/talloc.h>
/* global pointer to the gsm network data structure */
@ -899,6 +900,8 @@ static void bootstrap_rsl(struct gsm_bts_trx *trx)
void input_event(int event, enum e1inp_sign_type type, struct gsm_bts_trx *trx)
{
int ts_no, lchan_no;
switch (event) {
case EVT_E1_TEI_UP:
switch (type) {
@ -913,8 +916,30 @@ void input_event(int event, enum e1inp_sign_type type, struct gsm_bts_trx *trx)
}
break;
case EVT_E1_TEI_DN:
LOGP(DMI, LOGL_NOTICE, "Lost some E1 TEI link\n");
/* FIXME: deal with TEI or L1 link loss */
LOGP(DMI, LOGL_ERROR, "Lost some E1 TEI link: %d %p\n", type, trx);
/*
* free all allocated channels. change the nm_state so the
* trx and trx_ts becomes unusable and chan_alloc.c can not
* allocate from it.
*/
for (ts_no = 0; ts_no < ARRAY_SIZE(trx->ts); ++ts_no) {
struct gsm_bts_trx_ts *ts = &trx->ts[ts_no];
for (lchan_no = 0; lchan_no < ARRAY_SIZE(ts->lchan); ++lchan_no) {
if (ts->lchan[lchan_no].state != GSM_LCHAN_NONE)
lchan_free(&ts->lchan[lchan_no]);
lchan_reset(&ts->lchan[lchan_no]);
}
ts->nm_state.operational = 0;
ts->nm_state.availability = 0;
}
trx->nm_state.operational = 0;
trx->nm_state.availability = 0;
trx->bb_transc.nm_state.operational = 0;
trx->bb_transc.nm_state.availability = 0;
break;
default:
break;

14
openbsc/src/chan_alloc.c
View File

@ -330,6 +330,20 @@ void lchan_free(struct gsm_lchan *lchan)
* channel using it */
}
/*
* There was an error with the TRX and we need to forget
* any state so that a lchan can be allocated again after
* the trx is fully usable.
*/
void lchan_reset(struct gsm_lchan *lchan)
{
bsc_del_timer(&lchan->T3101);
lchan->type = GSM_LCHAN_NONE;
lchan->state = LCHAN_S_NONE;
}
/* Consider releasing the channel now */
int lchan_auto_release(struct gsm_lchan *lchan)
{