Osmocom Open Build Service

commit_0a34af1530760bb6b69173f31bfd47cfe62ab002.txt Added

commit_82d500ccac605d30c31a114369b377478b9f3abd.txt Deleted

osmo-bts_1.8.0.13.0a34.dsc Added

@@ -0,0 +1,24 @@
+Format: 3.0 (native)
+Source: osmo-bts
+Binary: osmo-bts, osmo-bts-trx, osmo-bts-trx-dbg, osmo-bts-virtual, osmo-bts-virtual-dbg, osmo-bts-doc
+Architecture: any all
+Version: 1.8.0.13.0a34
+Maintainer: Osmocom team <openbsc@lists.osmocom.org>
+Homepage: https://projects.osmocom.org/projects/osmobts
+Standards-Version: 3.9.8
+Vcs-Browser: https://gitea.osmocom.org/cellular-infrastructure/osmo-bts
+Vcs-Git: https://gitea.osmocom.org/cellular-infrastructure/osmo-bts
+Build-Depends: debhelper (>= 10), pkg-config, dh-autoreconf, autotools-dev, libosmocore-dev (>= 1.10.0), libosmo-abis-dev (>= 1.6.0), libosmo-netif-dev (>= 1.5.0), libgps-dev, txt2man, osmo-gsm-manuals-dev (>= 1.6.0)
+Package-List:
+ osmo-bts deb net optional arch=any
+ osmo-bts-doc deb doc optional arch=all
+ osmo-bts-trx deb net optional arch=any
+ osmo-bts-trx-dbg deb debug extra arch=any
+ osmo-bts-virtual deb net optional arch=any
+ osmo-bts-virtual-dbg deb debug extra arch=any
+Checksums-Sha1:
+ 0d3bdfd80f50f79c58b188a430eb6300ff1e0355 514588 osmo-bts_1.8.0.13.0a34.tar.xz
+Checksums-Sha256:
+ e259822013b52d3f1fc309d05d1be5273093502b2d8b98448ccabe5d9798c451 514588 osmo-bts_1.8.0.13.0a34.tar.xz
+Files:
+ 88b09b9320cda00b392ddf28c216a0b3 514588 osmo-bts_1.8.0.13.0a34.tar.xz

osmo-bts_1.8.0.6.82d5.tar.xz/.tarball-version -> osmo-bts_1.8.0.13.0a34.tar.xz/.tarball-version Changed

osmo-bts_1.8.0.6.82d5.tar.xz/debian/changelog -> osmo-bts_1.8.0.13.0a34.tar.xz/debian/changelog Changed

osmo-bts_1.8.0.6.82d5.tar.xz/include/osmo-bts/Makefile.am -> osmo-bts_1.8.0.13.0a34.tar.xz/include/osmo-bts/Makefile.am Changed

osmo-bts_1.8.0.13.0a34.tar.xz/include/osmo-bts/csd_rlp.h Added

@@ -0,0 +1,36 @@
+/*
+ * Declarations for functions in csd_rlp.c: alignment of downlink RLP frames
+ * and RLP GSMTAP mechanism for CSD NT modes.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <osmocom/core/bits.h>
+#include <osmocom/gsm/l1sap.h>
+#include <osmo-bts/lchan.h>
+
+extern const uint8_t csd_tchf48_nt_e2_map26;
+
+/* Per TS 48.020 section 15.1, the cadence of E2+E3 bits in a properly
+ * aligned sequence of pseudo-V.110 frames forming a single RLP frame
+ * is 00-01-10-11.  The following constant captures this bit sequence
+ * in hex, for comparison against align_bits output from
+ * csd_v110_rtp_decode() or against rlpdl_align_bits accumulator
+ * in CSD NT lchan state.
+ */
+#define	NTCSD_ALIGNED_EBITS	0x1B
+
+void ntcsd_dl_reset(struct gsm_lchan *lchan);
+void ntcsd_dl_input_48(struct gsm_lchan *lchan, const ubit_t *data_bits,
+			uint8_t align_bits);
+void ntcsd_dl_input_96(struct gsm_lchan *lchan, const ubit_t *data_bits,
+			uint8_t align_bits);
+bool ntcsd_dl_output(struct gsm_lchan *lchan, ubit_t *rlp_frame_out);
+
+void gsmtap_csd_rlp_process(struct gsm_lchan *lchan, bool is_uplink,
+			    const struct ph_tch_param *tch_ind,
+			    const ubit_t *data, unsigned int data_len);
+void gsmtap_csd_rlp_dl(struct gsm_lchan *lchan, uint32_t fn,
+			const ubit_t *data, unsigned int data_len);

osmo-bts_1.8.0.6.82d5.tar.xz/include/osmo-bts/csd_v110.h -> osmo-bts_1.8.0.13.0a34.tar.xz/include/osmo-bts/csd_v110.h Changed

osmo-bts_1.8.0.6.82d5.tar.xz/include/osmo-bts/lchan.h -> osmo-bts_1.8.0.13.0a34.tar.xz/include/osmo-bts/lchan.h Changed

osmo-bts_1.8.0.6.82d5.tar.xz/include/osmo-bts/msg_utils.h -> osmo-bts_1.8.0.13.0a34.tar.xz/include/osmo-bts/msg_utils.h Changed

osmo-bts_1.8.0.6.82d5.tar.xz/src/common/Makefile.am -> osmo-bts_1.8.0.13.0a34.tar.xz/src/common/Makefile.am Changed

osmo-bts_1.8.0.13.0a34.tar.xz/src/common/csd_rlp.c Added

@@ -0,0 +1,228 @@
+/* This module has been split from l1sap.c; original header comments preserved:
+ *
+ * (C) 2011 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
+ *
+ * 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 Affero 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 <stdbool.h>
+#include <string.h>
+#include <errno.h>
+
+#include <osmocom/core/bits.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/gsm/l1sap.h>
+#include <osmocom/gsm/gsm_utils.h>
+#include <osmocom/gsm/rsl.h>
+#include <osmocom/gsm/rlp.h>
+#include <osmocom/gsm/rtp_extensions.h>
+#include <osmocom/core/gsmtap.h>
+#include <osmocom/core/gsmtap_util.h>
+#include <osmocom/core/utils.h>
+
+#include <osmo-bts/logging.h>
+#include <osmo-bts/gsm_data.h>
+#include <osmo-bts/lchan.h>
+#include <osmo-bts/bts.h>
+#include <osmo-bts/csd_rlp.h>
+
+/* In the case of TCH/F4.8 NT, each 240-bit RLP frame is split between
+ * two channel-coding blocks of 120 bits each.  We need to know which
+ * frame numbers correspond to which half: in the UL-to-RTP path we have
+ * to set bit E2 based on the TDMA frame number at which we received the
+ * block in question, and in the DL direction we have to transmit the
+ * right half at the right time.
+ *
+ * See GSM 05.03 section 3.4.1 and the mapping tables of GSM 05.02;
+ * having "e2_map" in the array name shall serve as a mnemonic as to
+ * the sense of this array: 0 means 1st half and 1 means 2nd half,
+ * exactly as the value of bit E2 per TS 48.020 section 15.1.
+ */
+const uint8_t csd_tchf48_nt_e2_map26 = {
+	4  = 1,	/* B1 position */
+	13 = 1,	/* B3 position */
+	21 = 1,	/* B5 position */
+};
+
+/* This function resets (clears) the state of the DL alignment buffer.
+ * It needs to be called when we encounter a gap (packet loss, invalid
+ * packets, etc) in our RTP input stream. */
+void ntcsd_dl_reset(struct gsm_lchan *lchan)
+{
+	lchan->tch.csd.rlpdl_fill_level = 0;
+}
+
+/* This function is to be called with the decoded content of a single
+ * incoming RTP packet (data and alignment bits) for TCH/FH4.8 NT. */
+void ntcsd_dl_input_48(struct gsm_lchan *lchan, const ubit_t *data_bits,
+			uint8_t align_bits)
+{
+	memmove(lchan->tch.csd.rlpdl_data_bits,
+		lchan->tch.csd.rlpdl_data_bits + 60 * 2, 60 * 5);
+	memcpy(lchan->tch.csd.rlpdl_data_bits + 60 * 5, data_bits, 60 * 2);
+	lchan->tch.csd.rlpdl_align_bits <<= 4;
+	lchan->tch.csd.rlpdl_align_bits |= (align_bits & 0xF);
+	lchan->tch.csd.rlpdl_fill_level += 2;
+	if (lchan->tch.csd.rlpdl_fill_level > 7)
+		lchan->tch.csd.rlpdl_fill_level = 7;
+}
+
+/* This function is to be called with the decoded content of a single
+ * incoming RTP packet (data and alignment bits) for TCH/F9.6 NT. */
+void ntcsd_dl_input_96(struct gsm_lchan *lchan, const ubit_t *data_bits,
+			uint8_t align_bits)
+{
+	memmove(lchan->tch.csd.rlpdl_data_bits,
+		lchan->tch.csd.rlpdl_data_bits + 60 * 4, 60 * 3);
+	memcpy(lchan->tch.csd.rlpdl_data_bits + 60 * 3, data_bits, 60 * 4);
+	lchan->tch.csd.rlpdl_align_bits <<= 8;
+	lchan->tch.csd.rlpdl_align_bits |= (align_bits & 0xFF);
+	lchan->tch.csd.rlpdl_fill_level += 4;
+	if (lchan->tch.csd.rlpdl_fill_level > 7)
+		lchan->tch.csd.rlpdl_fill_level = 7;
+}
+
+/* This function is to be called to obtain a complete RLP frame for
+ * downlink transmission.  It will provide either a properly aligned
+ * frame (return value true) or a filler (return value false). */
+bool ntcsd_dl_output(struct gsm_lchan *lchan, ubit_t *rlp_frame_out)
+{
+	if (lchan->tch.csd.rlpdl_fill_level < 4)
+		goto no_frame_out;
+	if (((lchan->tch.csd.rlpdl_align_bits >> 0) & 0xFF) == NTCSD_ALIGNED_EBITS) {
+		memcpy(rlp_frame_out, lchan->tch.csd.rlpdl_data_bits + 60 * 3,
+			60 * 4);
+		return true;
+	}
+	if (lchan->tch.csd.rlpdl_fill_level < 5)
+		goto no_frame_out;
+	if (((lchan->tch.csd.rlpdl_align_bits >> 2) & 0xFF) == NTCSD_ALIGNED_EBITS) {
+		memcpy(rlp_frame_out, lchan->tch.csd.rlpdl_data_bits + 60 * 2,
+			60 * 4);
+		return true;
+	}
+	if (lchan->tch.csd.rlpdl_fill_level < 6)
+		goto no_frame_out;
+	if (((lchan->tch.csd.rlpdl_align_bits >> 4) & 0xFF) == NTCSD_ALIGNED_EBITS) {
+		memcpy(rlp_frame_out, lchan->tch.csd.rlpdl_data_bits + 60 * 1,
+			60 * 4);
+		return true;
+	}
+	if (lchan->tch.csd.rlpdl_fill_level < 7)
+		goto no_frame_out;
+	if (((lchan->tch.csd.rlpdl_align_bits >> 6) & 0xFF) == NTCSD_ALIGNED_EBITS) {
+		memcpy(rlp_frame_out, lchan->tch.csd.rlpdl_data_bits, 60 * 4);
+		return true;
+	}
+no_frame_out:
+	/* TS 44.021 section 12.1 says that a missing/unavailable 240-bit
+	 * RLP frame is to be filled with 0 bits, unlike ones-fill
+	 * used everywhere else in the world of V.110 and CSD. */
+	memset(rlp_frame_out, 0, 60 * 4);
+	return false;
+}
+
+/* process one MAC block of unpacked bits of a non-transparent CSD channel */
+void gsmtap_csd_rlp_process(struct gsm_lchan *lchan, bool is_uplink,
+			    const struct ph_tch_param *tch_ind,
+			    const ubit_t *data, unsigned int data_len)
+{
+	struct gsm_bts_trx *trx = lchan->ts->trx;
+	struct gsmtap_inst *inst = trx->bts->gsmtap.inst;
+	pbit_t *rlp_buf;
+	uint16_t arfcn;
+	int byte_len;
+
+	if (!inst || !trx->bts->gsmtap.rlp)
+		return;
+
+	if (lchan->csd_mode != LCHAN_CSD_M_NT)
+		return;
+
+	if (is_uplink)
+		rlp_buf = lchan->tch.csd.rlp_buf_ul;
+	else
+		rlp_buf = lchan->tch.csd.rlp_buf_dl;
+
+	/* TCH/F 9.6: 4x60bit block => 240bit RLP frame
+	 * TCH/F 4.8: 2x 2x60bit blocks starting at B0/B2/B4 => 240bit RLP frame
+	 * TCH/H 4.8: 4x60bit block => 240bit RLP frame
+	 * TCH/F 2.4: 2x36bit blocks => transparent only
+	 * TCH/H 2.4: 4x36bit blocks => transparent only
+	 * TCH/F 14.4: 2x 290 bit block (starting with M1=0) => 576-bit RLP frame
+	 */
+
+	if (lchan->type == GSM_LCHAN_TCH_F &&
+	    lchan->tch_mode == GSM48_CMODE_DATA_6k0 && is_uplink) {
+		/* In this mode we have 120-bit MAC blocks; two of them need
+		 * to be concatenated to render a 240-bit RLP frame. The first
+		 * block is present in B0/B2/B4, and we have to use FN to
+		 * detect this position.
+		 * This code path is only for UL: in the case of DL,
+		 * alignment logic elsewhere in the code will present us
+		 * with a fully assembled RLP frame. */
+		OSMO_ASSERT(data_len == 120);
+		if (csd_tchf48_nt_e2_maptch_ind->fn % 26 == 0) {
+			osmo_ubit2pbit_ext(rlp_buf, 0, data, 0, data_len, 1);
+			return;
+		}
+		osmo_ubit2pbit_ext(rlp_buf, 120, data, 0, data_len, 1);
+		byte_len = 240/8;
+	} else if (lchan->type == GSM_LCHAN_TCH_F && lchan->tch_mode == GSM48_CMODE_DATA_14k5) {
+		/* in this mode we have 290bit MAC blocks containing M1, M2 and 288 data bits;
+		 * two of them need to be concatenated to render a
+		 * 576-bit RLP frame. The start of a RLP frame is
+		 * denoted by a block with M1-bit set to 0. */
+		OSMO_ASSERT(data_len == 290);
+		ubit_t m1 = data0;
+		if (m1 == 0) {
+			osmo_ubit2pbit_ext(rlp_buf, 0, data, 2, data_len, 1);
+			return;
+		}
+		osmo_ubit2pbit_ext(rlp_buf, 288, data, 2, data_len, 1);
+		byte_len = 576/8;
+	} else {

osmo-bts_1.8.0.6.82d5.tar.xz/src/common/csd_v110.c -> osmo-bts_1.8.0.13.0a34.tar.xz/src/common/csd_v110.c Changed

@@ -20,6 +20,7 @@
  */
 
 #include <stdint.h>
+#include <stdbool.h>
 #include <errno.h>
 
 #include <osmocom/core/bits.h>
@@ -37,24 +38,28 @@
 #if 0
 	GSM48_CMODE_DATA_14k5 = {
 		/* TCH/F14.4: 290 bits every 20 ms (14.5 kbit/s) */
-		.fr = { .num_blocks = 1, .num_bits = 290 },
+		.num_blocks = 1,
+		.num_bits = 290,
+		.ra2_ir = 16,
 	},
 #endif
 	GSM48_CMODE_DATA_12k0 = {
 		/* TCH/F9.6: 4 * 60 bits every 20 ms (12.0 kbit/s) */
-		.fr = { .num_blocks = 4, .num_bits = 60 },
+		.num_blocks = 4,
+		.num_bits = 60,
+		.ra2_ir = 16,
 	},
 	GSM48_CMODE_DATA_6k0 = {
-		/* TCH/F4.8: 2 * 60 bits every 20 ms (6.0 kbit/s) */
-		.fr = { .num_blocks = 2, .num_bits = 60 },
-		/* TCH/H4.8: 4 * 60 bits every 40 ms (6.0 kbit/s) */
-		.hr = { .num_blocks = 4, .num_bits = 60 },
+		/* TCH/FH4.8: 2 * 60 bits every 20 ms (6.0 kbit/s) */
+		.num_blocks = 2,
+		.num_bits = 60,
+		.ra2_ir = 8,
 	},
 	GSM48_CMODE_DATA_3k6 = {
-		/* TCH/F2.4: 2 * 36 bits every 20 ms (3.6 kbit/s) */
-		.fr = { .num_blocks = 2, .num_bits = 36 },
-		/* TCH/H2.4: 4 * 36 bits every 40 ms (3.6 kbit/s) */
-		.hr = { .num_blocks = 4, .num_bits = 36 },
+		/* TCH/FH2.4: 2 * 36 bits every 20 ms (3.6 kbit/s) */
+		.num_blocks = 2,
+		.num_bits = 36,
+		.ra2_ir = 8,
 	},
 };
 
@@ -74,16 +79,14 @@
 };
 
 int csd_v110_rtp_encode(const struct gsm_lchan *lchan, uint8_t *rtp,
-			const uint8_t *data, size_t data_len)
+			const uint8_t *data, size_t data_len,
+			uint8_t nt48_half_num)
 {
-	const struct csd_v110_frame_desc *desc;
+	const struct csd_v110_lchan_desc *desc;
 	ubit_t ra_bits80 * 4;
 
 	OSMO_ASSERT(lchan->tch_mode < ARRAY_SIZE(csd_v110_lchan_desc));
-	if (lchan->type == GSM_LCHAN_TCH_F)
-		desc = &csd_v110_lchan_desclchan->tch_mode.fr;
-	else
-		desc = &csd_v110_lchan_desclchan->tch_mode.hr;
+	desc = &csd_v110_lchan_desclchan->tch_mode;
 	if (OSMO_UNLIKELY(desc->num_blocks == 0))
 		return -ENOTSUP;
 
@@ -109,9 +112,15 @@
 		/* E1 .. E3 must set by out-of-band knowledge */
 		if (lchan->csd_mode == LCHAN_CSD_M_NT) {
 			/* non-transparent: as per 3GPP TS 48.020, Table 7 */
-			df.e_bits0 = 0; /* E1: as per 15.1.2, shall be set to 0 (for BSS-MSC) */
-			df.e_bits1 = (i >> 1) & 0x01; /* E2: 0 for Q1/Q2, 1 for Q3/Q4 */
-			df.e_bits2 = (i >> 0) & 0x01; /* E3: 0 for Q1/Q3, 1 for Q2/Q4 */
+			/* E1: as per 15.1.2, shall be set to 0 (for BSS-MSC) */
+			df.e_bits0 = 0;
+			/* E2: 0 for Q1/Q2, 1 for Q3/Q4 */
+			if (desc->num_blocks == 4)
+				df.e_bits1 = (i >> 1) & 0x01;
+			else
+				df.e_bits1 = nt48_half_num;
+			/* E3: 0 for Q1/Q3, 1 for Q2/Q4 */
+			df.e_bits2 = (i >> 0) & 0x01;
 		} else {
 			/* transparent: as per 3GPP TS 44.021, Figure 4 */
 			df.e_bits0 = e1e2e3_maplchan->csd_mode0; /* E1 */
@@ -124,7 +133,7 @@
 
 ra1_ra2:
 	/* RA1/RA2: convert from an intermediate rate to 64 kbit/s */
-	if (desc->num_blocks == 4) {
+	if (desc->ra2_ir == 16) {
 		/* 4 * 80 bits (16 kbit/s) => 2 bits per octet */
 		for (unsigned int i = 0, j = 0; i < RFC4040_RTP_PLEN; i++) {
 			rtpi  = (0xff >> 2);
@@ -142,17 +151,29 @@
 	return RFC4040_RTP_PLEN;
 }
 
+static bool check_v110_align(const ubit_t *ra_bits)
+{
+	int i;
+	ubit_t bit0 = 0, bit1 = 1;
+
+	/* The weird code structure is for performance optimization,
+	 * to avoid conditionals inside loops. */
+	for (i = 0; i < 8; i++)
+		bit0 |= ra_bitsi;
+	for (i = 1; i < 10; i++)
+		bit1 &= ra_bitsi * 8;
+	return (bit0 == 0) && (bit1 == 1);
+}
+
 int csd_v110_rtp_decode(const struct gsm_lchan *lchan, uint8_t *data,
-			const uint8_t *rtp, size_t rtp_len)
+			uint8_t *align_bits, const uint8_t *rtp, size_t rtp_len)
 {
-	const struct csd_v110_frame_desc *desc;
+	const struct csd_v110_lchan_desc *desc;
 	ubit_t ra_bits80 * 4;
+	uint8_t align_accum = 0;
 
 	OSMO_ASSERT(lchan->tch_mode < ARRAY_SIZE(csd_v110_lchan_desc));
-	if (lchan->type == GSM_LCHAN_TCH_F)
-		desc = &csd_v110_lchan_desclchan->tch_mode.fr;
-	else
-		desc = &csd_v110_lchan_desclchan->tch_mode.hr;
+	desc = &csd_v110_lchan_desclchan->tch_mode;
 	if (OSMO_UNLIKELY(desc->num_blocks == 0))
 		return -ENOTSUP;
 
@@ -160,7 +181,7 @@
 		return -EINVAL;
 
 	/* RA1/RA2: convert from 64 kbit/s to an intermediate rate */
-	if (desc->num_blocks == 4) {
+	if (desc->ra2_ir == 16) {
 		/* 4 * 80 bits (16 kbit/s) => 2 bits per octet */
 		for (unsigned int i = 0, j = 0; i < RFC4040_RTP_PLEN; i++) {
 			ra_bitsj++ = (rtpi >> 7);
@@ -176,13 +197,24 @@
 	for (unsigned int i = 0; i < desc->num_blocks; i++) {
 		struct osmo_v110_decoded_frame df;
 
+		/* We require our RTP input to consist of aligned V.110
+		 * frames.  If we get misaligned input, let's catch it
+		 * explicitly, rather than send garbage downstream. */
+		if (!check_v110_align(&ra_bitsi * 80))
+			return -EINVAL;
 		/* convert a V.110 80-bit frame to a V.110 36-/60-bit frame */
 		osmo_v110_decode_frame(&df, &ra_bitsi * 80, 80);
 		if (desc->num_bits == 60)
 			osmo_csd_12k_6k_encode_frame(&datai * 60, 60, &df);
 		else /* desc->num_bits == 36 */
 			osmo_csd_3k6_encode_frame(&datai * 36, 36, &df);
+		/* save bits E2 & E3 that may be needed for RLP alignment */
+		align_accum <<= 2;
+		align_accum |= df.e_bits1 << 1;
+		align_accum |= df.e_bits2 << 0;
 	}
 
+	if (align_bits)
+		*align_bits = align_accum;
 	return desc->num_blocks * desc->num_bits;
 }

osmo-bts_1.8.0.6.82d5.tar.xz/src/common/l1sap.c -> osmo-bts_1.8.0.13.0a34.tar.xz/src/common/l1sap.c Changed

@@ -60,6 +60,7 @@
 #include <osmo-bts/pcuif_proto.h>
 #include <osmo-bts/cbch.h>
 #include <osmo-bts/asci.h>
+#include <osmo-bts/csd_rlp.h>
 #include <osmo-bts/csd_v110.h>
 
 /* determine the CCCH block number based on the frame number */
@@ -1490,6 +1491,216 @@
 		lchan->tch.dtx_fr_hr_efr.dl_sid_transmitted = true;
 }
 
+/* TDMA frame number of burst 'a' % 26 is the table index.
+ * This mapping is valid for both TCH/H(0) and TCH/H(1). */
+const uint8_t sched_tchh_dl_csd_map26 = {
+	0  = 1, /* TCH/H(0): B0(0  ... 19) */
+	1  = 1, /* TCH/H(1): B0(1  ... 20) */
+	8  = 1, /* TCH/H(0): B1(8  ... 2) */
+	9  = 1, /* TCH/H(1): B1(9  ... 3) */
+	17 = 1, /* TCH/H(0): B2(17 ... 10) */
+	18 = 1, /* TCH/H(1): B2(18 ... 11) */
+};
+
+/* In the case of half-rate CSD, we need to send TCH.req every 40 ms instead of
+ * every 20 ms.  However, both TS 48.103 and common sense desire for
+ * interoperability (between FR and HR, between OsmoBTS and E1 BTS)
+ * require 20 ms RTP packetization interval.  Hence a special adapter
+ * function is needed. */
+static int tch_rts_ind_csd_hr(struct gsm_bts_trx *trx, struct gsm_lchan *lchan,
+				struct ph_tch_param *rts_ind)
+{
+	uint8_t chan_nr = rts_ind->chan_nr;
+	uint32_t fn = rts_ind->fn;
+	const struct csd_v110_lchan_desc *desc;
+	unsigned bits_per_20ms;
+	struct msgb *input_msg2, *phy_msg;
+	struct osmo_phsap_prim *resp_l1sap, empty_l1sap;
+	uint8_t *phy_data;
+	struct gsm_time g_time;
+	int i;
+
+	/* The generic scheduler still sends us TCH-RTS.ind every 20 ms,
+	 * hence we have to filter out half of them here. */
+	if (!sched_tchh_dl_csd_mapfn % 26)
+		return 0;
+
+	gsm_fn2gsmtime(&g_time, fn);
+
+	desc = &csd_v110_lchan_desclchan->tch_mode;
+	bits_per_20ms = desc->num_blocks * desc->num_bits;
+	OSMO_ASSERT(bits_per_20ms != 0);
+
+	for (i = 0; i < ARRAY_SIZE(input_msg); i++) {
+		if (!lchan->loopback && lchan->abis_ip.rtp_socket) {
+			osmo_rtp_socket_poll(lchan->abis_ip.rtp_socket);
+			lchan->abis_ip.rtp_socket->rx_user_ts += GSM_RTP_DURATION;
+		}
+		input_msgi = msgb_dequeue_count(&lchan->dl_tch_queue,
+						  &lchan->dl_tch_queue_len);
+	}
+
+	if (lchan->csd_mode == LCHAN_CSD_M_NT) {
+		for (i = 0; i < ARRAY_SIZE(input_msg); i++) {
+			if (input_msgi) {
+				ntcsd_dl_input_48(lchan, input_msgi->data,
+					  rtpmsg_csd_align_bits(input_msgi));
+			} else {
+				ntcsd_dl_reset(lchan);
+			}
+		}
+	}
+
+	phy_msg = l1sap_msgb_alloc(bits_per_20ms * 2);
+	if (phy_msg) {
+		resp_l1sap = msgb_l1sap_prim(phy_msg);
+		phy_msg->l2h = phy_msg->tail;
+		if (lchan->csd_mode == LCHAN_CSD_M_NT) {
+			bool good_rlp;
+			phy_data = msgb_put(phy_msg, 240); /* RLP frame */
+			good_rlp = ntcsd_dl_output(lchan, phy_data);
+			if (good_rlp)
+				gsmtap_csd_rlp_dl(lchan, fn, phy_data, 240);
+		} else {
+			for (i = 0; i < ARRAY_SIZE(input_msg); i++) {
+				phy_data = msgb_put(phy_msg, bits_per_20ms);
+				if (input_msgi) {
+					memcpy(phy_data, input_msgi->data,
+						bits_per_20ms);
+				} else {
+					/* IDLE frame, filled with 1 bits */
+					memset(phy_data, 0x01, bits_per_20ms);
+				}
+			}
+		}
+	} else {
+		resp_l1sap = &empty_l1sap;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(input_msg); i++) {
+		if (input_msgi)
+			msgb_free(input_msgi);
+	}
+
+	memset(resp_l1sap, 0, sizeof(*resp_l1sap));
+	osmo_prim_init(&resp_l1sap->oph, SAP_GSM_PH, PRIM_TCH, PRIM_OP_REQUEST,
+		phy_msg);
+	resp_l1sap->u.tch.chan_nr = chan_nr;
+	resp_l1sap->u.tch.fn = fn;
+	resp_l1sap->u.tch.marker = 0;	/* M bit is undefined for clearmode */
+
+	LOGPLCGT(lchan, &g_time, DL1P, LOGL_DEBUG, "Tx TCH.req\n");
+
+	l1sap_down(trx, resp_l1sap);
+
+	return 0;
+}
+
+/* The case of TCH/F4.8 NT also requires special processing that is
+ * somewhat similar to half-rate CSD.  We have to produce an RLP frame
+ * for DL every 40 ms, thus it makes the most sense for us to poll
+ * the Rx jitter buffer every 40 ms just like with CSD-HR.  However,
+ * we need to send TCH.req to the PHY every 20 ms, sending either
+ * the first half or the second half of the RLP frame we put together
+ * every 40 ms. */
+static int tch_rts_ind_tchf48_nt(struct gsm_bts_trx *trx,
+				 struct gsm_lchan *lchan,
+				 struct ph_tch_param *rts_ind)
+{
+	uint8_t chan_nr = rts_ind->chan_nr;
+	uint32_t fn = rts_ind->fn;
+	struct msgb *input_msg, *phy_msg;
+	struct osmo_phsap_prim *resp_l1sap, empty_l1sap;
+	ubit_t rlp_frame240;
+	bool good_rlp;
+	struct gsm_time g_time;
+	int i;
+
+	gsm_fn2gsmtime(&g_time, fn);
+
+	/* Input processing happens every 40 ms */
+	if (csd_tchf48_nt_e2_mapfn % 26 == 0) {
+		for (i = 0; i < 2; i++) {
+			if (!lchan->loopback && lchan->abis_ip.rtp_socket) {
+				osmo_rtp_socket_poll(lchan->abis_ip.rtp_socket);
+				lchan->abis_ip.rtp_socket->rx_user_ts += GSM_RTP_DURATION;
+			}
+			input_msg = msgb_dequeue_count(&lchan->dl_tch_queue,
+						       &lchan->dl_tch_queue_len);
+			if (input_msg) {
+				ntcsd_dl_input_48(lchan, input_msg->data,
+					  rtpmsg_csd_align_bits(input_msg));
+				msgb_free(input_msg);
+			} else {
+				ntcsd_dl_reset(lchan);
+			}
+		}
+		good_rlp = ntcsd_dl_output(lchan, rlp_frame);
+		if (good_rlp)
+			gsmtap_csd_rlp_dl(lchan, fn, rlp_frame, 240);
+		memcpy(lchan->tch.csd.tchf48_nt_2ndhalf, rlp_frame+120, 120);
+	}
+
+	/* back to every 20 ms code path */
+	phy_msg = l1sap_msgb_alloc(120);	/* half of RLP frame */
+	if (phy_msg) {
+		resp_l1sap = msgb_l1sap_prim(phy_msg);
+		phy_msg->l2h = msgb_put(phy_msg, 120);
+		if (csd_tchf48_nt_e2_mapfn % 26 == 0)
+			memcpy(phy_msg->l2h, rlp_frame, 120);
+		else
+			memcpy(phy_msg->l2h, lchan->tch.csd.tchf48_nt_2ndhalf, 120);
+	} else {
+		resp_l1sap = &empty_l1sap;
+	}
+
+	memset(resp_l1sap, 0, sizeof(*resp_l1sap));
+	osmo_prim_init(&resp_l1sap->oph, SAP_GSM_PH, PRIM_TCH, PRIM_OP_REQUEST,
+		phy_msg);
+	resp_l1sap->u.tch.chan_nr = chan_nr;
+	resp_l1sap->u.tch.fn = fn;
+	resp_l1sap->u.tch.marker = 0;	/* M bit is undefined for clearmode */
+
+	LOGPLCGT(lchan, &g_time, DL1P, LOGL_DEBUG, "Tx TCH.req\n");
+
+	l1sap_down(trx, resp_l1sap);
+
+	return 0;
+}
+
+/* For TCH/F9.6 NT we need much less special processing than for TCH/F4.8 NT
+ * or for CSD-HR, but we still need to handle the possibility of misaligned
+ * RTP input, i.e., pseudo-V.110 frames aligned in the packet, but not
+ * forming proper RLP frame alignment via E2 & E3 bits. */
+static void tchf96_nt_dl_alignment(struct gsm_lchan *lchan, struct msgb *msg,
+				   uint32_t fn)
+{
+	bool good_rlp;
+
+	if (!msg) {
+		ntcsd_dl_reset(lchan);

osmo-bts_1.8.0.6.82d5.tar.xz/src/osmo-bts-trx/sched_lchan_tchh.c -> osmo-bts_1.8.0.13.0a34.tar.xz/src/osmo-bts-trx/sched_lchan_tchh.c Changed

osmo-bts_1.8.0.6.82d5.tar.xz/tests/csd/csd_test.c -> osmo-bts_1.8.0.13.0a34.tar.xz/tests/csd/csd_test.c Changed

@@ -93,7 +93,7 @@
 
 static void exec_test_case(const struct test_case *tc)
 {
-	const struct csd_v110_frame_desc *desc;
+	const struct csd_v110_lchan_desc *desc;
 	uint8_t rtpRFC4040_RTP_PLEN = { 0 };
 	ubit_t data_encBBUF_MAX;
 	ubit_t data_decBBUF_MAX;
@@ -101,10 +101,7 @@
 
 	/* obtain a V.110 frame description for the given channel type/rate */
 	OSMO_ASSERT(tc->tch_mode < ARRAY_SIZE(csd_v110_lchan_desc));
-	if (tc->lchan_type == GSM_LCHAN_TCH_F)
-		desc = &csd_v110_lchan_desctc->tch_mode.fr;
-	else
-		desc = &csd_v110_lchan_desctc->tch_mode.hr;
+	desc = &csd_v110_lchan_desctc->tch_mode;
 
 	/* total number of bits carried by a radio interface block */
 	const unsigned int bit_num = desc->num_bits * desc->num_blocks;
@@ -127,7 +124,7 @@
 		data_enci = i & 0x01;
 
 	/* encode an RTP frame and print it */
-	rc = csd_v110_rtp_encode(&lchan, &rtp0, &data_enc0, bit_num);
+	rc = csd_v110_rtp_encode(&lchan, &rtp0, &data_enc0, bit_num, 0);
 	fprintf(stderr, "i csd_v110_rtp_encode() returns %d\n", rc);
 	if (rc != RFC4040_RTP_PLEN)
 		return;
@@ -136,7 +133,7 @@
 		fprintf(stderr, "    %s\n", osmo_hexdump(&rtpi * 16, 16));
 
 	/* decode the encoded RTP frame */
-	rc = csd_v110_rtp_decode(&lchan, &data_dec0, &rtp0, sizeof(rtp));
+	rc = csd_v110_rtp_decode(&lchan, &data_dec0, NULL, &rtp0, sizeof(rtp));
 	fprintf(stderr, "i csd_v110_rtp_decode() returns %d\n", rc);
 	if (rc != bit_num)
 		return;
@@ -151,7 +148,7 @@
 	fprintf(stderr, "i Testing '%s' (IDLE)\n", tc->name);
 
 	/* encode an idle RTP frame and print it */
-	rc = csd_v110_rtp_encode(&lchan, &rtp0, &data_enc0, 0);
+	rc = csd_v110_rtp_encode(&lchan, &rtp0, &data_enc0, 0, 0);
 	fprintf(stderr, "i csd_v110_rtp_encode() returns %d\n", rc);
 	if (rc != RFC4040_RTP_PLEN)
 		return;

osmo-bts_1.8.0.6.82d5.tar.xz/tests/csd/csd_test.err -> osmo-bts_1.8.0.13.0a34.tar.xz/tests/csd/csd_test.err Changed

@@ -99,29 +99,29 @@
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
-i Testing 'TCH/H4.8' (bitnum=240)
+i Testing 'TCH/H4.8' (bitnum=120)
 i csd_v110_rtp_encode() returns 160
-    3f 3f 3f 3f bf bf bf bf ff 7f 7f 7f bf bf bf bf 
-    ff 7f 7f 7f bf ff 7f 7f bf bf bf bf ff 7f 7f 7f 
-    bf bf bf bf ff 7f 7f 7f 3f 3f 3f 3f bf bf bf bf 
-    ff 7f 7f 7f bf bf bf bf ff 7f 7f 7f bf ff 7f 7f 
-    bf bf bf bf ff 7f 7f 7f bf bf bf bf ff 7f 7f 7f 
-    3f 3f 3f 3f bf bf bf bf ff 7f 7f 7f bf bf bf bf 
-    ff 7f 7f 7f bf ff 7f 7f bf bf bf bf ff 7f 7f 7f 
-    bf bf bf bf ff 7f 7f 7f 3f 3f 3f 3f bf bf bf bf 
-    ff 7f 7f 7f bf bf bf bf ff 7f 7f 7f bf ff 7f 7f 
-    bf bf bf bf ff 7f 7f 7f bf bf bf bf ff 7f 7f 7f 
-i csd_v110_rtp_decode() returns 240
+    7f 7f 7f 7f 7f 7f 7f 7f ff 7f ff 7f ff 7f ff 7f 
+    ff ff 7f ff 7f ff 7f ff ff 7f ff 7f ff 7f ff 7f 
+    ff ff 7f ff 7f ff 7f ff ff 7f ff ff 7f ff 7f ff 
+    ff 7f ff 7f ff 7f ff 7f ff ff 7f ff 7f ff 7f ff 
+    ff 7f ff 7f ff 7f ff 7f ff ff 7f ff 7f ff 7f ff 
+    7f 7f 7f 7f 7f 7f 7f 7f ff 7f ff 7f ff 7f ff 7f 
+    ff ff 7f ff 7f ff 7f ff ff 7f ff 7f ff 7f ff 7f 
+    ff ff 7f ff 7f ff 7f ff ff 7f ff ff 7f ff 7f ff 
+    ff 7f ff 7f ff 7f ff 7f ff ff 7f ff 7f ff 7f ff 
+    ff 7f ff 7f ff 7f ff 7f ff ff 7f ff 7f ff 7f ff 
+i csd_v110_rtp_decode() returns 120
 i Testing 'TCH/H4.8' (IDLE)
 i csd_v110_rtp_encode() returns 160
-    3f 3f 3f 3f ff ff ff ff ff ff ff ff ff ff ff ff 
+    7f 7f 7f 7f 7f 7f 7f 7f ff ff ff ff ff ff ff ff 
+    ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
-    ff ff ff ff ff ff ff ff 3f 3f 3f 3f ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
-    3f 3f 3f 3f ff ff ff ff ff ff ff ff ff ff ff ff 
+    7f 7f 7f 7f 7f 7f 7f 7f ff ff ff ff ff ff ff ff 
+    ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
-    ff ff ff ff ff ff ff ff 3f 3f 3f 3f ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
 i Testing 'TCH/F2.4' (bitnum=72)
@@ -149,28 +149,28 @@
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
-i Testing 'TCH/H2.4' (bitnum=144)
+i Testing 'TCH/H2.4' (bitnum=72)
 i csd_v110_rtp_encode() returns 160
-    3f 3f 3f 3f bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f 
-    bf 7f bf 7f ff 3f 7f 7f bf 7f bf 7f bf 7f bf 7f 
-    bf 7f bf 7f bf 7f bf 7f 3f 3f 3f 3f bf 7f bf 7f 
-    bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f ff 3f 7f 7f 
-    bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f 
-    3f 3f 3f 3f bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f 
-    bf 7f bf 7f ff 3f 7f 7f bf 7f bf 7f bf 7f bf 7f 
-    bf 7f bf 7f bf 7f bf 7f 3f 3f 3f 3f bf 7f bf 7f 
-    bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f ff 3f 7f 7f 
-    bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f bf 7f 
-i csd_v110_rtp_decode() returns 144
+    7f 7f 7f 7f 7f 7f 7f 7f ff 7f 7f ff ff 7f 7f ff 
+    ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff 
+    ff 7f 7f ff ff 7f 7f ff ff ff 7f 7f 7f ff 7f ff 
+    ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff 
+    ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff 
+    7f 7f 7f 7f 7f 7f 7f 7f ff 7f 7f ff ff 7f 7f ff 
+    ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff 
+    ff 7f 7f ff ff 7f 7f ff ff ff 7f 7f 7f ff 7f ff 
+    ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff 
+    ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff ff 7f 7f ff 
+i csd_v110_rtp_decode() returns 72
 i Testing 'TCH/H2.4' (IDLE)
 i csd_v110_rtp_encode() returns 160
-    3f 3f 3f 3f ff ff ff ff ff ff ff ff ff ff ff ff 
+    7f 7f 7f 7f 7f 7f 7f 7f ff ff ff ff ff ff ff ff 
+    ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
-    ff ff ff ff ff ff ff ff 3f 3f 3f 3f ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
-    3f 3f 3f 3f ff ff ff ff ff ff ff ff ff ff ff ff 
+    7f 7f 7f 7f 7f 7f 7f 7f ff ff ff ff ff ff ff ff 
+    ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
-    ff ff ff ff ff ff ff ff 3f 3f 3f 3f ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff

osmo-bts_1.8.0.6.82d5.dsc Deleted

@@ -1,24 +0,0 @@
-Format: 3.0 (native)
-Source: osmo-bts
-Binary: osmo-bts, osmo-bts-trx, osmo-bts-trx-dbg, osmo-bts-virtual, osmo-bts-virtual-dbg, osmo-bts-doc
-Architecture: any all
-Version: 1.8.0.6.82d5
-Maintainer: Osmocom team <openbsc@lists.osmocom.org>
-Homepage: https://projects.osmocom.org/projects/osmobts
-Standards-Version: 3.9.8
-Vcs-Browser: https://gitea.osmocom.org/cellular-infrastructure/osmo-bts
-Vcs-Git: https://gitea.osmocom.org/cellular-infrastructure/osmo-bts
-Build-Depends: debhelper (>= 10), pkg-config, dh-autoreconf, autotools-dev, libosmocore-dev (>= 1.10.0), libosmo-abis-dev (>= 1.6.0), libosmo-netif-dev (>= 1.5.0), libgps-dev, txt2man, osmo-gsm-manuals-dev (>= 1.6.0)
-Package-List:
- osmo-bts deb net optional arch=any
- osmo-bts-doc deb doc optional arch=all
- osmo-bts-trx deb net optional arch=any
- osmo-bts-trx-dbg deb debug extra arch=any
- osmo-bts-virtual deb net optional arch=any
- osmo-bts-virtual-dbg deb debug extra arch=any
-Checksums-Sha1:
- 9b0396846ee7a49c1ebef1d66b0b9fefbca1a293 511256 osmo-bts_1.8.0.6.82d5.tar.xz
-Checksums-Sha256:
- 27a31e91f498f66710d401db31054ee2906715ed489cfa91022612bcbc8a9a7d 511256 osmo-bts_1.8.0.6.82d5.tar.xz
-Files:
- c45ad3aa27e20cb8ec754b63cc808008 511256 osmo-bts_1.8.0.6.82d5.tar.xz

Changes of Revision 205