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add T3101 to release lchan in case MS never responds to IMMEDIATE ASSIGN

This commit is contained in:
Harald Welte 2009-08-10 00:26:10 +02:00
parent 4198561305
commit b7e8116bfa
2 changed files with 16 additions and 1 deletions
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2
openbsc/include/openbsc/gsm_data.h
View File

@ -147,6 +147,8 @@ struct gsm_lchan {
/* Timer started to release the channel */
struct timer_list release_timer;
struct timer_list T3101;
/*
* Operations that have a state and might be pending
*/

15
openbsc/src/abis_rsl.c
View File

@ -1017,6 +1017,14 @@ static int abis_rsl_rx_trx(struct msgb *msg)
return rc;
}
/* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */
static void t3101_expired(void *data)
{
struct gsm_lchan *lchan = data;
rsl_chan_release(lchan);
}
/* MS has requested a channel on the RACH */
static int rsl_rx_chan_rqd(struct msgb *msg)
{
@ -1088,7 +1096,10 @@ static int rsl_rx_chan_rqd(struct msgb *msg)
ia.chan_desc.chan_nr, gsm_chreq_name(chreq_reason),
rqd_ref->ra);
/* FIXME: Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */
/* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */
lchan->T3101.cb = t3101_expired;
lchan->T3101.data = lchan;
bsc_schedule_timer(&lchan->T3101, 10, 0);
/* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */
ret = rsl_imm_assign_cmd(bts, sizeof(ia), (u_int8_t *) &ia);
@ -1199,6 +1210,8 @@ static int abis_rsl_rx_rll(struct msgb *msg)
break;
case RSL_MT_EST_IND:
DEBUGPC(DRLL, "ESTABLISH INDICATION\n");
/* lchan is established, stop T3101 */
bsc_del_timer(&msg->lchan->T3101);
if (msgb_l2len(msg) >
sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) &&
rllh->data[0] == RSL_IE_L3_INFO) {