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Store "Channel rate and type" from RSL Channel Mode IE in BTS 

The RSL "Channel rate and type" field from the RSL Channel Mode IE
in RSL_CHAN_ACTIV and RSL_MODE_MODIFY_REQ messages is the only place
where the BSC differentiates between a normal TCH and the special
TCH modes used in VGCS or VBS.  Let's copy this field from the RSL
message into the lchan state, so that BTS models can actually (in
subsequent patches) reflect it when activating the L1.

Change-Id: I6d531bf528bcb81f44d91336471a46ef790d7646
Related: OS#4851
This commit is contained in:
Harald Welte 2023-05-11 09:30:47 +02:00 committed by laforge
parent 34838ee4e9
commit 84d220abc1
2 changed files with 7 additions and 0 deletions
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2
include/osmo-bts/lchan.h
View File

@ -141,6 +141,8 @@ struct gsm_lchan {
uint8_t nr;
/* The logical channel type */
enum gsm_chan_t type;
/* RSL channel rate and type */
enum rsl_cmod_crt rsl_chan_rt;
/* RSL channel mode */
enum rsl_cmod_spd rsl_cmode;
/* If TCH, traffic channel mode */

5
src/common/rsl.c
View File

@ -113,6 +113,7 @@ static int rsl_handle_chan_mod_ie(struct gsm_lchan *lchan,
cm = (const struct rsl_ie_chan_mode *) TLVP_VAL(tp, RSL_IE_CHAN_MODE);
lchan->rsl_cmode = cm->spd_ind;
lchan->rsl_chan_rt = cm->chan_rt;
lchan->ts->trx->bts->dtxd = (cm->dtx_dtu & RSL_CMOD_DTXd) ? true : false;
/* Octet 5: Channel rate and type */
@ -120,6 +121,10 @@ static int rsl_handle_chan_mod_ie(struct gsm_lchan *lchan,
case RSL_CMOD_CRT_SDCCH:
case RSL_CMOD_CRT_TCH_Bm:
case RSL_CMOD_CRT_TCH_Lm:
case RSL_CMOD_CRT_TCH_GROUP_Bm:
case RSL_CMOD_CRT_TCH_GROUP_Lm:
case RSL_CMOD_CRT_TCH_BCAST_Bm:
case RSL_CMOD_CRT_TCH_BCAST_Lm:
break;
case RSL_CMOD_CRT_OSMO_TCH_VAMOS_Bm:
case RSL_CMOD_CRT_OSMO_TCH_VAMOS_Lm: