[HSL] initial support for the HSL 2.75G Femtocell
The HSL Femtocell seems to be a poor man implementation of the
ip.access Abis/IP protocol, but cutting corners wherever possible.
We try to workaround those corners wherever possible...
diff --git a/openbsc/src/libbsc/abis_rsl.c b/openbsc/src/libbsc/abis_rsl.c
index 07a7dc6..58e2a7c 100644
--- a/openbsc/src/libbsc/abis_rsl.c
+++ b/openbsc/src/libbsc/abis_rsl.c
@@ -636,11 +636,14 @@
rsl_lchan_set_state(lchan, LCHAN_S_NONE);
}
+static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan);
+
/* Chapter 8.4.14 / 4.7: Tell BTS to release the radio channel */
static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error)
{
struct abis_rsl_dchan_hdr *dh;
struct msgb *msg;
+ int rc;
if (lchan->state == LCHAN_S_REL_ERR) {
LOGP(DRSL, LOGL_NOTICE, "%s is in error state not sending release.\n",
@@ -671,8 +674,15 @@
msg->trx->bts->network->T3111 + 2, 0);
}
+ rc = abis_rsl_sendmsg(msg);
+
/* BTS will respond by RF CHAN REL ACK */
- return abis_rsl_sendmsg(msg);
+
+ /* The HSL Femto seems to 'forget' sending a REL ACK for TS1...TS7 */
+ if (lchan->ts->trx->bts->type == GSM_BTS_TYPE_HSL_FEMTO && lchan->ts->nr != 0)
+ rc = rsl_rx_rf_chan_rel_ack(lchan);
+
+ return rc;
}
static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan)