osmo-bts-lc15: use consistent name for containing directory

The binary is called 'osmo-bts-lc15', while the containing folder
is named 'osmo-bts-litecell15'.  This inconsistency complicates
automatic generation of the XML VTY reference - fix it.

Change-Id: I55c073fbd01aee42871101401d76d87e7c91832e
Related: SYS#4937, OS#3036

1 files changed, 0 insertions, 533 deletions

diff --git a/src/osmo-bts-litecell15/tch.c b/src/osmo-bts-litecell15/tch.c
deleted file mode 100644
index 526b2ddf..00000000
--- a/src/osmo-bts-litecell15/tch.c
+++ /dev/null
@@ -1,533 +0,0 @@
-/* Traffic channel support for NuRAN Wireless Litecell 1.5 BTS L1 */
-
-/* Copyright (C) 2015 by Yves Godin <support@nuranwireless.com>
- *
- * Based on sysmoBTS:
- *     (C) 2011-2012 by Harald Welte <laforge@gnumonks.org>
- *
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <stdint.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdbool.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/utils.h>
-#include <osmocom/core/select.h>
-#include <osmocom/core/timer.h>
-#include <osmocom/core/bits.h>
-#include <osmocom/gsm/gsm_utils.h>
-
-#include <osmo-bts/logging.h>
-#include <osmo-bts/bts.h>
-#include <osmo-bts/gsm_data.h>
-#include <osmo-bts/msg_utils.h>
-#include <osmo-bts/measurement.h>
-#include <osmo-bts/amr.h>
-#include <osmo-bts/l1sap.h>
-#include <osmo-bts/dtx_dl_amr_fsm.h>
-
-#include <nrw/litecell15/litecell15.h>
-#include <nrw/litecell15/gsml1prim.h>
-#include <nrw/litecell15/gsml1const.h>
-#include <nrw/litecell15/gsml1types.h>
-
-#include "lc15bts.h"
-#include "l1_if.h"
-
-static struct msgb *l1_to_rtppayload_fr(uint8_t *l1_payload, uint8_t payload_len,
-					struct gsm_lchan *lchan)
-{
-	struct msgb *msg;
-	uint8_t *cur;
-
-	msg = msgb_alloc_headroom(1024, 128, "L1P-to-RTP");
-	if (!msg)
-		return NULL;
-
-	/* new L1 can deliver bits like we need them */
-	cur = msgb_put(msg, GSM_FR_BYTES);
-	memcpy(cur, l1_payload, GSM_FR_BYTES);
-
-	lchan_set_marker(osmo_fr_check_sid(l1_payload, payload_len), lchan);
-
-	return msg;
-}
-
-/*! \brief convert GSM-FR from RTP payload to L1 format
- *  \param[out] l1_payload payload part of L1 buffer
- *  \param[in] rtp_payload pointer to RTP payload data
- *  \param[in] payload_len length of \a rtp_payload
- *  \returns number of \a l1_payload bytes filled
- */
-static int rtppayload_to_l1_fr(uint8_t *l1_payload, const uint8_t *rtp_payload,
-				unsigned int payload_len)
-{
-	/* new L1 can deliver bits like we need them */
-	memcpy(l1_payload, rtp_payload, GSM_FR_BYTES);
-	return GSM_FR_BYTES;
-}
-
-static struct msgb *l1_to_rtppayload_efr(uint8_t *l1_payload,
-					 uint8_t payload_len,
-					 struct gsm_lchan *lchan)
-{
-	struct msgb *msg;
-	uint8_t *cur;
-
-	msg = msgb_alloc_headroom(1024, 128, "L1P-to-RTP");
-	if (!msg)
-		return NULL;
-
-	/* new L1 can deliver bits like we need them */
-	cur = msgb_put(msg, GSM_EFR_BYTES);
-	memcpy(cur, l1_payload, GSM_EFR_BYTES);
-	enum osmo_amr_type ft;
-	enum osmo_amr_quality bfi;
-	uint8_t cmr;
-	int8_t sti, cmi;
-	osmo_amr_rtp_dec(l1_payload, payload_len, &cmr, &cmi, &ft, &bfi, &sti);
-	lchan_set_marker(ft == AMR_GSM_EFR_SID, lchan);
-
-	return msg;
-}
-
-static int rtppayload_to_l1_efr(uint8_t *l1_payload, const uint8_t *rtp_payload,
-				unsigned int payload_len)
-{
-	memcpy(l1_payload, rtp_payload, payload_len);
-
-	return payload_len;
-}
-
-static struct msgb *l1_to_rtppayload_hr(uint8_t *l1_payload, uint8_t payload_len,
-					struct gsm_lchan *lchan)
-{
-	struct msgb *msg;
-	uint8_t *cur;
-
-	msg = msgb_alloc_headroom(1024, 128, "L1P-to-RTP");
-	if (!msg)
-		return NULL;
-
-	if (payload_len != GSM_HR_BYTES) {
-		LOGP(DL1P, LOGL_ERROR, "L1 HR frame length %u != expected %u\n",
-			payload_len, GSM_HR_BYTES);
-		return NULL;
-	}
-
-	cur = msgb_put(msg, GSM_HR_BYTES);
-	memcpy(cur, l1_payload, GSM_HR_BYTES);
-
-	lchan_set_marker(osmo_hr_check_sid(l1_payload, payload_len), lchan);
-
-	return msg;
-}
-
-/*! \brief convert GSM-FR from RTP payload to L1 format
- *  \param[out] l1_payload payload part of L1 buffer
- *  \param[in] rtp_payload pointer to RTP payload data
- *  \param[in] payload_len length of \a rtp_payload
- *  \returns number of \a l1_payload bytes filled
- */
-static int rtppayload_to_l1_hr(uint8_t *l1_payload, const uint8_t *rtp_payload,
-				unsigned int payload_len)
-{
-
-	if (payload_len != GSM_HR_BYTES) {
-		LOGP(DL1P, LOGL_ERROR, "RTP HR frame length %u != expected %u\n",
-			payload_len, GSM_HR_BYTES);
-		return 0;
-	}
-
-	memcpy(l1_payload, rtp_payload, GSM_HR_BYTES);
-
-	return GSM_HR_BYTES;
-}
-
-static struct msgb *l1_to_rtppayload_amr(uint8_t *l1_payload, uint8_t payload_len,
-					 struct gsm_lchan *lchan)
-{
-	struct msgb *msg;
-	uint8_t amr_if2_len = payload_len - 2;
-	uint8_t *cur;
-
-	msg = msgb_alloc_headroom(1024, 128, "L1P-to-RTP");
-	if (!msg)
-		return NULL;
-
-	cur = msgb_put(msg, amr_if2_len);
-	memcpy(cur, l1_payload+2, amr_if2_len);
-
-	/*
-	 * Audiocode's MGW doesn't like receiving CMRs that are not
-	 * the same as the previous one. This means we need to patch
-	 * the content here.
-	 */
-	if ((cur[0] & 0xF0) == 0xF0)
-		cur[0]= lchan->tch.last_cmr << 4;
-	else
-		lchan->tch.last_cmr = cur[0] >> 4;
-
-	return msg;
-}
-
-/*! \brief convert AMR from RTP payload to L1 format
- *  \param[out] l1_payload payload part of L1 buffer
- *  \param[in] rtp_payload pointer to RTP payload data
- *  \param[in] payload_len length of \a rtp_payload
- *  \returns number of \a l1_payload bytes filled
- */
-static int rtppayload_to_l1_amr(uint8_t *l1_payload, const uint8_t *rtp_payload,
-				uint8_t payload_len, uint8_t ft)
-{
-	memcpy(l1_payload, rtp_payload, payload_len);
-	return payload_len;
-}
-
-#define RTP_MSGB_ALLOC_SIZE	512
-
-/*! \brief function for incoming RTP via TCH.req
- *  \param[in] rtp_pl buffer containing RTP payload
- *  \param[in] rtp_pl_len length of \a rtp_pl
- *  \param[in] use_cache Use cached payload instead of parsing RTP
- *  \param[in] marker RTP header Marker bit (indicates speech onset)
- *  \returns 0 if encoding result can be sent further to L1 without extra actions
- *           positive value if data is ready AND extra actions are required
- *           negative value otherwise (no data for L1 encoded)
- *
- * This function prepares a msgb with a L1 PH-DATA.req primitive and
- * queues it into lchan->dl_tch_queue.
- *
- * Note that the actual L1 primitive header is not fully initialized
- * yet, as things like the frame number, etc. are unknown at the time we
- * pre-fill the primtive.
- */
-int l1if_tch_encode(struct gsm_lchan *lchan, uint8_t *data, uint8_t *len,
-		    const uint8_t *rtp_pl, unsigned int rtp_pl_len, uint32_t fn,
-		    bool use_cache, bool marker)
-{
-	uint8_t *payload_type;
-	uint8_t *l1_payload, ft;
-	int rc = 0;
-	bool is_sid = false;
-
-	DEBUGP(DRTP, "%s RTP IN: %s\n", gsm_lchan_name(lchan),
-		osmo_hexdump(rtp_pl, rtp_pl_len));
-
-	payload_type = &data[0];
-	l1_payload = &data[1];
-
-	switch (lchan->tch_mode) {
-	case GSM48_CMODE_SPEECH_V1:
-		if (lchan->type == GSM_LCHAN_TCH_F) {
-			*payload_type = GsmL1_TchPlType_Fr;
-			rc = rtppayload_to_l1_fr(l1_payload,
-						 rtp_pl, rtp_pl_len);
-			if (rc && lchan->ts->trx->bts->dtxd)
-				is_sid = osmo_fr_check_sid(rtp_pl, rtp_pl_len);
-		} else{
-			*payload_type = GsmL1_TchPlType_Hr;
-			rc = rtppayload_to_l1_hr(l1_payload,
-						 rtp_pl, rtp_pl_len);
-			if (rc && lchan->ts->trx->bts->dtxd)
-				is_sid = osmo_hr_check_sid(rtp_pl, rtp_pl_len);
-		}
-		if (is_sid)
-			dtx_cache_payload(lchan, rtp_pl, rtp_pl_len, fn, -1);
-		break;
-	case GSM48_CMODE_SPEECH_EFR:
-		*payload_type = GsmL1_TchPlType_Efr;
-		rc = rtppayload_to_l1_efr(l1_payload, rtp_pl,
-					  rtp_pl_len);
-		/* FIXME: detect and save EFR SID */
-		break;
-	case GSM48_CMODE_SPEECH_AMR:
-		if (use_cache) {
-			*payload_type = GsmL1_TchPlType_Amr;
-			rtppayload_to_l1_amr(l1_payload, lchan->tch.dtx.cache,
-					     lchan->tch.dtx.len, ft);
-			*len = lchan->tch.dtx.len + 1;
-			return 0;
-		}
-
-		rc = dtx_dl_amr_fsm_step(lchan, rtp_pl, rtp_pl_len, fn,
-					 l1_payload, marker, len, &ft);
-		if (rc < 0)
-			return rc;
-		if (!dtx_dl_amr_enabled(lchan)) {
-			*payload_type = GsmL1_TchPlType_Amr;
-			rtppayload_to_l1_amr(l1_payload + 2, rtp_pl, rtp_pl_len,
-					     ft);
-			return 0;
-		}
-
-		/* DTX DL-specific logic below: */
-		switch (lchan->tch.dtx.dl_amr_fsm->state) {
-		case ST_ONSET_V:
-			*payload_type = GsmL1_TchPlType_Amr_Onset;
-			dtx_cache_payload(lchan, rtp_pl, rtp_pl_len, fn, 0);
-			*len = 3;
-			return 1;
-		case ST_VOICE:
-			*payload_type = GsmL1_TchPlType_Amr;
-			rtppayload_to_l1_amr(l1_payload + 2, rtp_pl, rtp_pl_len,
-					     ft);
-			return 0;
-		case ST_SID_F1:
-			if (lchan->type == GSM_LCHAN_TCH_H) { /* AMR HR */
-				*payload_type = GsmL1_TchPlType_Amr_SidFirstP1;
-				rtppayload_to_l1_amr(l1_payload + 2, rtp_pl,
-						     rtp_pl_len, ft);
-				return 0;
-			}
-			/* AMR FR */
-			*payload_type = GsmL1_TchPlType_Amr;
-			rtppayload_to_l1_amr(l1_payload + 2, rtp_pl, rtp_pl_len,
-					     ft);
-			return 0;
-		case ST_SID_F2:
-			*payload_type = GsmL1_TchPlType_Amr;
-			rtppayload_to_l1_amr(l1_payload + 2, rtp_pl, rtp_pl_len,
-					     ft);
-			return 0;
-		case ST_F1_INH_V:
-			*payload_type = GsmL1_TchPlType_Amr_SidFirstInH;
-			*len = 3;
-			dtx_cache_payload(lchan, rtp_pl, rtp_pl_len, fn, 0);
-			return 1;
-		case ST_U_INH_V:
-			*payload_type = GsmL1_TchPlType_Amr_SidUpdateInH;
-			*len = 3;
-			dtx_cache_payload(lchan, rtp_pl, rtp_pl_len, fn, 0);
-			return 1;
-		case ST_SID_U:
-		case ST_U_NOINH:
-			return -EAGAIN;
-		case ST_FACCH:
-			return -EBADMSG;
-		default:
-			LOGP(DRTP, LOGL_ERROR, "Unhandled DTX DL AMR FSM state "
-			     "%d\n", lchan->tch.dtx.dl_amr_fsm->state);
-			return -EINVAL;
-		}
-		break;
-	default:
-		/* we don't support CSD modes */
-		rc = -1;
-		break;
-	}
-
-	if (rc < 0) {
-		LOGP(DRTP, LOGL_ERROR, "%s unable to parse RTP payload\n",
-		     gsm_lchan_name(lchan));
-		return -EBADMSG;
-	}
-
-	*len = rc + 1;
-
-	DEBUGP(DRTP, "%s RTP->L1: %s\n", gsm_lchan_name(lchan),
-		osmo_hexdump(data, *len));
-	return 0;
-}
-
-static int is_recv_only(uint8_t speech_mode)
-{
-	return (speech_mode & 0xF0) == (1 << 4);
-}
-
-/*! \brief receive a traffic L1 primitive for a given lchan */
-int l1if_tch_rx(struct gsm_bts_trx *trx, uint8_t chan_nr, struct msgb *l1p_msg)
-{
-	GsmL1_Prim_t *l1p = msgb_l1prim(l1p_msg);
-	GsmL1_PhDataInd_t *data_ind = &l1p->u.phDataInd;
-	uint8_t *payload, payload_type, payload_len, sid_first[9] = { 0 };
-	struct msgb *rmsg = NULL;
-	struct gsm_lchan *lchan = &trx->ts[L1SAP_CHAN2TS(chan_nr)].lchan[l1sap_chan2ss(chan_nr)];
-
-	if (is_recv_only(lchan->abis_ip.speech_mode))
-		return -EAGAIN;
-
-	if (data_ind->msgUnitParam.u8Size < 1) {
-		LOGPFN(DL1P, LOGL_DEBUG, data_ind->u32Fn, "chan_nr %d Rx Payload size 0\n", chan_nr);
-		/* Push empty payload to upper layers */
-		rmsg = msgb_alloc_headroom(256, 128, "L1P-to-RTP");
-		return add_l1sap_header(trx, rmsg, lchan, chan_nr, data_ind->u32Fn,
-					data_ind->measParam.fBer * 10000,
-					data_ind->measParam.fLinkQuality * 10, 0, 0, 0);
-	}
-
-	payload_type = data_ind->msgUnitParam.u8Buffer[0];
-	payload = data_ind->msgUnitParam.u8Buffer + 1;
-	payload_len = data_ind->msgUnitParam.u8Size - 1;
-
-	switch (payload_type) {
-	case GsmL1_TchPlType_Fr:
-	case GsmL1_TchPlType_Efr:
-		if (lchan->type != GSM_LCHAN_TCH_F)
-			goto err_payload_match;
-		break;
-	case GsmL1_TchPlType_Hr:
-		if (lchan->type != GSM_LCHAN_TCH_H)
-			goto err_payload_match;
-		break;
-	case GsmL1_TchPlType_Amr:
-		if (lchan->type != GSM_LCHAN_TCH_H &&
-		    lchan->type != GSM_LCHAN_TCH_F)
-			goto err_payload_match;
-		break;
-	case GsmL1_TchPlType_Amr_Onset:
-		if (lchan->type != GSM_LCHAN_TCH_H &&
-		    lchan->type != GSM_LCHAN_TCH_F)
-			goto err_payload_match;
-		/* according to 3GPP TS 26.093 ONSET frames precede the first
-		   speech frame of a speech burst - set the marker for next RTP
-		   frame */
-		lchan->rtp_tx_marker = true;
-		break;
-	case GsmL1_TchPlType_Amr_SidFirstP1:
-		if (lchan->type != GSM_LCHAN_TCH_H)
-			goto err_payload_match;
-		LOGPFN(DL1P, LOGL_DEBUG, data_ind->u32Fn, "DTX: received SID_FIRST_P1 from L1 "
-		     "(%d bytes)\n", payload_len);
-		break;
-	case GsmL1_TchPlType_Amr_SidFirstP2:
-		if (lchan->type != GSM_LCHAN_TCH_H)
-			goto err_payload_match;
-		LOGPFN(DL1P, LOGL_DEBUG, data_ind->u32Fn, "DTX: received SID_FIRST_P2 from L1 "
-		     "(%d bytes)\n", payload_len);
-		break;
-	case GsmL1_TchPlType_Amr_SidFirstInH:
-		if (lchan->type != GSM_LCHAN_TCH_H)
-			goto err_payload_match;
-		lchan->rtp_tx_marker = true;
-		LOGPFN(DL1P, LOGL_DEBUG, data_ind->u32Fn, "DTX: received SID_FIRST_INH from L1 "
-		     "(%d bytes)\n", payload_len);
-		break;
-	case GsmL1_TchPlType_Amr_SidUpdateInH:
-		if (lchan->type != GSM_LCHAN_TCH_H)
-			goto err_payload_match;
-		lchan->rtp_tx_marker = true;
-		LOGPFN(DL1P, LOGL_DEBUG, data_ind->u32Fn, "DTX: received SID_UPDATE_INH from L1 "
-		     "(%d bytes)\n", payload_len);
-		break;
-	default:
-		LOGPFN(DL1P, LOGL_NOTICE, data_ind->u32Fn, "%s Rx Payload Type %s is unsupported\n",
-			gsm_lchan_name(lchan),
-			get_value_string(lc15bts_tch_pl_names, payload_type));
-		break;
-	}
-
-
-	switch (payload_type) {
-	case GsmL1_TchPlType_Fr:
-		rmsg = l1_to_rtppayload_fr(payload, payload_len, lchan);
-		break;
-	case GsmL1_TchPlType_Hr:
-		rmsg = l1_to_rtppayload_hr(payload, payload_len, lchan);
-		break;
-	case GsmL1_TchPlType_Efr:
-		rmsg = l1_to_rtppayload_efr(payload, payload_len, lchan);
-		break;
-	case GsmL1_TchPlType_Amr:
-		rmsg = l1_to_rtppayload_amr(payload, payload_len, lchan);
-		break;
-	case GsmL1_TchPlType_Amr_SidFirstP1:
-		memcpy(sid_first, payload, payload_len);
-		int len = osmo_amr_rtp_enc(sid_first, 0, AMR_SID, AMR_GOOD);
-		if (len < 0)
-			return 0;
-		rmsg = l1_to_rtppayload_amr(sid_first, len, lchan);
-		break;
-	}
-
-	if (rmsg)
-		return add_l1sap_header(trx, rmsg, lchan, chan_nr, data_ind->u32Fn,
-					data_ind->measParam.fBer * 10000,
-					data_ind->measParam.fLinkQuality * 10, 0, 0, 0);
-
-	return 0;
-
-err_payload_match:
-	LOGPFN(DL1P, LOGL_ERROR, data_ind->u32Fn, "%s Rx Payload Type %s incompatible with lchan\n",
-		gsm_lchan_name(lchan), get_value_string(lc15bts_tch_pl_names, payload_type));
-	return -EINVAL;
-}
-
-struct msgb *gen_empty_tch_msg(struct gsm_lchan *lchan, uint32_t fn)
-{
-	struct msgb *msg;
-	GsmL1_Prim_t *l1p;
-	GsmL1_PhDataReq_t *data_req;
-	GsmL1_MsgUnitParam_t *msu_param;
-	uint8_t *payload_type;
-	uint8_t *l1_payload;
-	int rc;
-
-	msg = l1p_msgb_alloc();
-	if (!msg)
-		return NULL;
-
-	l1p = msgb_l1prim(msg);
-	data_req = &l1p->u.phDataReq;
-	msu_param = &data_req->msgUnitParam;
-	payload_type = &msu_param->u8Buffer[0];
-	l1_payload = &msu_param->u8Buffer[1];
-
-	switch (lchan->tch_mode) {
-	case GSM48_CMODE_SPEECH_AMR:
-		if (lchan->type == GSM_LCHAN_TCH_H &&
-		    dtx_dl_amr_enabled(lchan)) {
-			/* we have to explicitly handle sending SID FIRST P2 for
-			   AMR HR in here */
-			*payload_type = GsmL1_TchPlType_Amr_SidFirstP2;
-			rc = dtx_dl_amr_fsm_step(lchan, NULL, 0, fn, l1_payload,
-						 false, &(msu_param->u8Size),
-						 NULL);
-			if (rc == 0)
-				return msg;
-		}
-		*payload_type = GsmL1_TchPlType_Amr;
-		break;
-	case GSM48_CMODE_SPEECH_V1:
-		if (lchan->type == GSM_LCHAN_TCH_F)
-			*payload_type = GsmL1_TchPlType_Fr;
-		else
-			*payload_type = GsmL1_TchPlType_Hr;
-		break;
-	case GSM48_CMODE_SPEECH_EFR:
-		*payload_type = GsmL1_TchPlType_Efr;
-		break;
-	default:
-		msgb_free(msg);
-		return NULL;
-	}
-
-	rc = repeat_last_sid(lchan, l1_payload, fn);
-	if (!rc) {
-		msgb_free(msg);
-		return NULL;
-	}
-	msu_param->u8Size = rc;
-
-	return msg;
-}