[gsm48] Move RR CHANNEL MODIFY to gsm_04_08_utils.c
Be able to send RR CHANNEL MODIFY from the BSC/MSC code
as well. Move the method that knows about the IPAccess RTP
and issues the "bind" to the utils tool
diff --git a/openbsc/src/gsm_04_08_utils.c b/openbsc/src/gsm_04_08_utils.c
index 358212f..598775c 100644
--- a/openbsc/src/gsm_04_08_utils.c
+++ b/openbsc/src/gsm_04_08_utils.c
@@ -514,3 +514,48 @@
return gsm48_sendmsg(msg, NULL);
}
+
+/* 9.1.5 Channel mode modify: Modify the mode on the MS side */
+int gsm48_tx_chan_mode_modify(struct gsm_lchan *lchan, u_int8_t mode)
+{
+ struct msgb *msg = gsm48_msgb_alloc();
+ struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
+ struct gsm48_chan_mode_modify *cmm =
+ (struct gsm48_chan_mode_modify *) msgb_put(msg, sizeof(*cmm));
+ u_int16_t arfcn = lchan->ts->trx->arfcn & 0x3ff;
+
+ DEBUGP(DRR, "-> CHANNEL MODE MODIFY mode=0x%02x\n", mode);
+
+ lchan->tch_mode = mode;
+ msg->lchan = lchan;
+ gh->proto_discr = GSM48_PDISC_RR;
+ gh->msg_type = GSM48_MT_RR_CHAN_MODE_MODIF;
+
+ /* fill the channel information element, this code
+ * should probably be shared with rsl_rx_chan_rqd() */
+ cmm->chan_desc.chan_nr = lchan2chan_nr(lchan);
+ cmm->chan_desc.h0.tsc = lchan->ts->trx->bts->tsc;
+ cmm->chan_desc.h0.h = 0;
+ cmm->chan_desc.h0.arfcn_high = arfcn >> 8;
+ cmm->chan_desc.h0.arfcn_low = arfcn & 0xff;
+ cmm->mode = mode;
+
+ return gsm48_sendmsg(msg, NULL);
+}
+
+int gsm48_lchan_modify(struct gsm_lchan *lchan, u_int8_t lchan_mode)
+{
+ int rc;
+
+ rc = gsm48_tx_chan_mode_modify(lchan, lchan_mode);
+ if (rc < 0)
+ return rc;
+
+ /* FIXME: we not only need to do this after mode modify, but
+ * also after channel activation */
+ if (is_ipaccess_bts(lchan->ts->trx->bts) && lchan_mode != GSM48_CMODE_SIGN)
+ rc = rsl_ipacc_bind(lchan);
+
+ return rc;
+}
+