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SNDCP: add SNDCP-XID encoder/decoder and unit test

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The SNDCP-XID (or layer-3 xid) is used to exchange layer-3 parameters
such as compression. The encoder encodes a bytestream that is then
sent as regular XID field from LLC.

We will need the SNDCP-XID to negotiate the parameters for our
upcomming GPRS data and header compression features

Change-Id: If2d63fe2550864cafef3156b1dc0629037c49c1e
changes/88/3188/1
Philipp Maier 7 years ago committed by Harald Welte
parent 308cb0719d
commit 22611be3d9
12 changed files with 2350 additions and 1 deletions
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  1. 1
      openbsc/.gitignore
  2. 1
      openbsc/configure.ac
  3. 1
      openbsc/include/openbsc/Makefile.am
  4. 216
      openbsc/include/openbsc/gprs_sndcp_xid.h
  5. 2
      openbsc/src/gprs/Makefile.am
  6. 1803
      openbsc/src/gprs/gprs_sndcp_xid.c
  7. 2
      openbsc/tests/Makefile.am
  8. 5
      openbsc/tests/sgsn/Makefile.am
  9. 20
      openbsc/tests/sndcp_xid/Makefile.am
  10. 282
      openbsc/tests/sndcp_xid/sndcp_xid_test.c
  11. 11
      openbsc/tests/sndcp_xid/sndcp_xid_test.ok
  12. 7
      openbsc/tests/testsuite.at

1
openbsc/.gitignore vendored
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@ -82,6 +82,7 @@ tests/oap/oap_test
tests/gtphub/gtphub_test
tests/mm_auth/mm_auth_test
tests/xid/xid_test
tests/sndcp_xid/sndcp_xid_test
tests/atconfig
tests/atlocal

1
openbsc/configure.ac
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@ -231,6 +231,7 @@ AC_OUTPUT(
tests/gtphub/Makefile
tests/mm_auth/Makefile
tests/xid/Makefile
tests/sndcp_xid/Makefile
doc/Makefile
doc/examples/Makefile
Makefile)

1
openbsc/include/openbsc/Makefile.am
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@ -25,6 +25,7 @@ noinst_HEADERS = \
gprs_llc_xid.h \
gprs_sgsn.h \
gprs_sndcp.h \
gprs_sndcp_xid.h \
gprs_utils.h \
gsm_04_08.h \
gsm_04_11.h \

216
openbsc/include/openbsc/gprs_sndcp_xid.h
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@ -0,0 +1,216 @@
/* GPRS SNDCP XID field encoding/decoding as per 3GPP TS 44.065 */
/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Philipp Maier
*
* 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/>.
*/
#pragma once
#include <stdint.h>
#include <osmocom/core/linuxlist.h>
#define CURRENT_SNDCP_VERSION 0 /* See 3GPP TS 44.065, clause 8 */
#define MAX_ENTITIES 32 /* 3GPP TS 44.065 reserves 5 bit
* for compression enitity number */
#define MAX_COMP 16 /* Maximum number of possible pcomp/dcomp values */
#define MAX_NSAPI 11 /* Maximum number usable NSAPIs */
#define MAX_ROHC 16 /* Maximum number of ROHC compression profiles */
/* According to: 3GPP TS 44.065, 6.5.1.1 Format of the protocol control
* information compression field (Figure 7) and 3GPP TS 44.065,
* 6.6.1.1 Format of the data compression field (Figure 9) */
struct gprs_sndcp_comp_field {
struct llist_head list;
/* Propose bit (P), see also: 6.5.1.1.2 and 6.6.1.1.2 */
unsigned int p;
/* Entity number, see also: 6.5.1.1.3 and 6.6.1.1.3 */
unsigned int entity;
/* Algorithm identifier, see also: 6.5.1.1.4 and 6.6.1.1.4 */
int algo;
/* Number of contained PCOMP / DCOMP values */
uint8_t comp_len;
/* PCOMP / DCOMP values, see also: 6.5.1.1.5 and 6.6.1.1.5 */
uint8_t comp[MAX_COMP];
/* Note: Only one of the following struct pointers may,
be used. Unused pointers must be set to NULL! */
struct gprs_sndcp_pcomp_rfc1144_params *rfc1144_params;
struct gprs_sndcp_pcomp_rfc2507_params *rfc2507_params;
struct gprs_sndcp_pcomp_rohc_params *rohc_params;
struct gprs_sndcp_dcomp_v42bis_params *v42bis_params;
struct gprs_sndcp_dcomp_v44_params *v44_params;
};
/* According to: 3GPP TS 44.065, 6.5.1.1.4 Algorithm identifier */
enum gprs_sndcp_hdr_comp_algo {
RFC_1144, /* TCP/IP header compression, see also 6.5.2 */
RFC_2507, /* TCP/UDP/IP header compression, see also: 6.5.3 */
ROHC /* Robust Header Compression, see also 6.5.4 */
};
/* According to: 3GPP TS 44.065, 6.5.1.1.4 Algorithm identifier */
enum gprs_sndcp_data_comp_algo {
V42BIS, /* V.42bis data compression, see also 6.6.2 */
V44 /* V44 data compression, see also: 6.6.3 */
};
/* According to: 3GPP TS 44.065, 8 SNDCP XID parameters */
enum gprs_sndcp_xid_param_types {
SNDCP_XID_VERSION_NUMBER,
SNDCP_XID_DATA_COMPRESSION, /* See also: subclause 6.6.1 */
SNDCP_XID_PROTOCOL_COMPRESSION, /* See also: subclause 6.5.1 */
};
/* According to: 3GPP TS 44.065, 6.5.2.1 Parameters (Table 5) */
struct gprs_sndcp_pcomp_rfc1144_params {
uint8_t nsapi_len; /* Number of applicable NSAPIs
* (default 0) */
uint8_t nsapi[MAX_NSAPI]; /* Applicable NSAPIs (default 0) */
int s01; /* (default 15) */
};
/* According to: 3GPP TS 44.065, 6.5.2.2 Assignment of PCOMP values */
enum gprs_sndcp_pcomp_rfc1144_pcomp {
RFC1144_PCOMP1, /* Uncompressed TCP */
RFC1144_PCOMP2, /* Compressed TCP */
RFC1144_PCOMP_NUM /* Number of pcomp values */
};
/* According to: 3GPP TS 44.065, 6.5.3.1 Parameters (Table 6) */
struct gprs_sndcp_pcomp_rfc2507_params {
uint8_t nsapi_len; /* Number of applicable NSAPIs
* (default 0) */
uint8_t nsapi[MAX_NSAPI]; /* Applicable NSAPIs (default 0) */
int f_max_period; /* (default 256) */
int f_max_time; /* (default 5) */
int max_header; /* (default 168) */
int tcp_space; /* (default 15) */
int non_tcp_space; /* (default 15) */
};
/* According to: 3GPP TS 44.065, 6.5.3.2 Assignment of PCOMP values for RFC2507 */
enum gprs_sndcp_pcomp_rfc2507_pcomp {
RFC2507_PCOMP1, /* Full Header */
RFC2507_PCOMP2, /* Compressed TCP */
RFC2507_PCOMP3, /* Compressed TCP non delta */
RFC2507_PCOMP4, /* Compressed non TCP */
RFC2507_PCOMP5, /* Context state */
RFC2507_PCOMP_NUM /* Number of pcomp values */
};
/* According to: 3GPP TS 44.065, 6.5.4.1 Parameter (Table 10) */
struct gprs_sndcp_pcomp_rohc_params {
uint8_t nsapi_len; /* Number of applicable NSAPIs
* (default 0) */
uint8_t nsapi[MAX_NSAPI]; /* Applicable NSAPIs (default 0) */
int max_cid; /* (default 15) */
int max_header; /* (default 168) */
uint8_t profile_len; /* (default 1) */
uint16_t profile[MAX_ROHC]; /* (default 0, ROHC uncompressed) */
};
/* According to: 3GPP TS 44.065, 6.5.4.2 Assignment of PCOMP values for ROHC */
enum gprs_sndcp_pcomp_rohc_pcomp {
ROHC_PCOMP1, /* ROHC small CIDs */
ROHC_PCOMP2, /* ROHC large CIDs */
ROHC_PCOMP_NUM /* Number of pcomp values */
};
/* ROHC compression profiles, see also:
http://www.iana.org/assignments/rohc-pro-ids/rohc-pro-ids.xhtml */
enum gprs_sndcp_xid_rohc_profiles {
ROHC_UNCOMPRESSED = 0x0000, /* ROHC uncompressed [RFC5795] */
ROHC_RTP = 0x0001, /* ROHC RTP [RFC3095] */
ROHCV2_RTP = 0x0101, /* ROHCv2 RTP [RFC5225] */
ROHC_UDP = 0x0002, /* ROHC UDP [RFC3095] */
ROHCv2_UDP = 0x0102, /* ROHCv2 UDP [RFC5225] */
ROHC_ESP = 0x0003, /* ROHC ESP [RFC3095] */
ROHCV2_ESP = 0x0103, /* ROHCv2 ESP [RFC5225] */
ROHC_IP = 0x0004, /* ROHC IP [RFC3843] */
ROHCV2_IP = 0x0104, /* ROHCv2 IP [RFC5225] */
ROHC_LLA = 0x0005, /* ROHC LLA [RFC4362] */
ROHC_LLA_WITH_R_MODE = 0x0105, /* ROHC LLA with R-mode [RFC3408] */
ROHC_TCP = 0x0006, /* ROHC TCP [RFC6846] */
ROHC_RTP_UDP_LITE = 0x0007, /* ROHC RTP/UDP-Lite [RFC4019] */
ROHCV2_RTP_UDP_LITE = 0x0107, /* ROHCv2 RTP/UDP-Lite [RFC5225] */
ROHC_UDP_LITE = 0x0008, /* ROHC UDP-Lite [RFC4019] */
ROHCV2_UDP_LITE = 0x0108, /* ROHCv2 UDP-Lite [RFC5225] */
};
/* According to: 3GPP TS 44.065, 6.6.2.1 Parameters (Table 7a) */
struct gprs_sndcp_dcomp_v42bis_params {
uint8_t nsapi_len; /* Number of applicable NSAPIs
* (default 0) */
uint8_t nsapi[MAX_NSAPI]; /* Applicable NSAPIs (default 0) */
int p0; /* (default 3) */
int p1; /* (default 2048) */
int p2; /* (default 20) */
};
/* According to: 3GPP TS 44.065, 6.6.2.2 Assignment of DCOMP values */
enum gprs_sndcp_dcomp_v42bis_dcomp {
V42BIS_DCOMP1, /* V.42bis enabled */
V42BIS_DCOMP_NUM /* Number of dcomp values */
};
/* According to: 3GPP TS 44.065, 6.6.3.1 Parameters (Table 7c) */
struct gprs_sndcp_dcomp_v44_params {
uint8_t nsapi_len; /* Number of applicable NSAPIs
* (default 0) */
uint8_t nsapi[MAX_NSAPI]; /* Applicable NSAPIs (default 0) */
int c0; /* (default 10000000) */
int p0; /* (default 3) */
int p1t; /* Refer to subclause 6.6.3.1.4 */
int p1r; /* Refer to subclause 6.6.3.1.5 */
int p3t; /* (default 3 x p1t) */
int p3r; /* (default 3 x p1r) */
};
/* According to: 3GPP TS 44.065, 6.6.3.2 Assignment of DCOMP values */
enum gprs_sndcp_dcomp_v44_dcomp {
V44_DCOMP1, /* Packet method compressed */
V44_DCOMP2, /* Multi packet method compressed */
V44_DCOMP_NUM /* Number of dcomp values */
};
/* Transform a list with compression fields into an SNDCP-XID message (dst) */
int gprs_sndcp_compile_xid(uint8_t *dst, unsigned int dst_maxlen,
const struct llist_head *comp_fields);
/* Transform an SNDCP-XID message (src) into a list of SNDCP-XID fields */
struct llist_head *gprs_sndcp_parse_xid(const void *ctx,
const uint8_t * src,
unsigned int src_len,
const struct llist_head *comp_fields_req);
/* Find out to which compression class the specified comp-field belongs
* (header compression or data compression?) */
int gprs_sndcp_get_compression_class(
const struct gprs_sndcp_comp_field *comp_field);
/* Dump a list with SNDCP-XID fields (Debug) */
void gprs_sndcp_dump_comp_fields(const struct llist_head *comp_fields,
unsigned int logl);

2
openbsc/src/gprs/Makefile.am
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@ -72,6 +72,7 @@ osmo_sgsn_SOURCES = \
gprs_sgsn.c \
gprs_sndcp.c \
gprs_sndcp_vty.c \
gprs_sndcp_xid.c \
sgsn_main.c \
sgsn_vty.c \
sgsn_libgtp.c \
@ -98,6 +99,7 @@ osmo_sgsn_LDADD = \
$(LIBCRYPTO_LIBS) \
-lrt \
-lgtp \
-lm \
$(NULL)
if BUILD_IU
osmo_sgsn_LDADD += \

1803
openbsc/src/gprs/gprs_sndcp_xid.c
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File diff suppressed because it is too large Load Diff

2
openbsc/tests/Makefile.am
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@ -10,7 +10,9 @@ SUBDIRS = \
subscr \
mm_auth \
xid \
sndcp_xid \
$(NULL)
if BUILD_NAT
SUBDIRS += \
bsc-nat \

5
openbsc/tests/sgsn/Makefile.am
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@ -56,7 +56,8 @@ sgsn_test_LDADD = \
$(top_builddir)/src/gprs/gprs_gb_parse.o \
$(top_builddir)/src/gprs/oap.o \
$(top_builddir)/src/gprs/oap_messages.o \
$(top_builddir)/src/gprs/gprs_llc_xid.o \
$(top_builddir)/src/gprs/gprs_llc_xid.o \
$(top_builddir)/src/gprs/gprs_sndcp_xid.o \
$(top_builddir)/src/libcommon/libcommon.a \
$(LIBOSMOABIS_LIBS) \
$(LIBOSMOCORE_LIBS) \
@ -66,7 +67,9 @@ sgsn_test_LDADD = \
$(LIBCRYPTO_LIBS) \
$(LIBGTP_LIBS) \
-lrt \
-lm \
$(NULL)
if BUILD_IU
sgsn_test_LDADD += \
$(top_builddir)/src/libiu/libiu.a \

20
openbsc/tests/sndcp_xid/Makefile.am
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@ -0,0 +1,20 @@
AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBCARES_CFLAGS)
EXTRA_DIST = sndcp_xid_test.ok
noinst_PROGRAMS = sndcp_xid_test
sndcp_xid_test_SOURCES = sndcp_xid_test.c
sndcp_xid_test_LDADD = \
$(top_builddir)/src/gprs/gprs_sndcp_xid.o \
$(LIBOSMOABIS_LIBS) \
$(LIBOSMOCORE_LIBS) \
$(LIBOSMOGSM_LIBS) \
$(LIBOSMOGB_LIBS) \
$(LIBCARES_LIBS) \
$(LIBCRYPTO_LIBS) \
-lgtp -lrt -lm

282
openbsc/tests/sndcp_xid/sndcp_xid_test.c
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@ -0,0 +1,282 @@
/* Test SNDCP-XID Encoding/Decoding */
/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Philipp Maier
*
* 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 <openbsc/gprs_sndcp_xid.h>
#include <openbsc/debug.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/application.h>
#include <stdio.h>
#include <string.h>
/* Test SNDCP-XID decoding with a real world sample */
static void test_xid_decode_realworld(const void *ctx)
{
struct llist_head *comp_fields;
int rc;
printf("Testing SNDCP XID-Decoder/Encoder (real world data)\n");
/* Example of a real world SNDCP-XID message */
uint8_t xid[] =
{ 0x00, 0x01, 0x00, 0x02, 0x31, 0x82, 0x02, 0x27, 0x89, 0xff, 0xe0,
0x00, 0x0f, 0x00, 0xa8, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x02,
0x01, 0x02, 0x00, 0x03, 0x01, 0x03, 0x00, 0x04, 0x01, 0x04, 0x00, 0x05,
0x01, 0x05, 0x00, 0x06, 0x00, 0x07, 0x01, 0x07, 0x00, 0x08, 0x01, 0x08,
0x80, 0x00, 0x04, 0x12, 0x00, 0x40, 0x07 };
uint8_t xid_r[512];
/* Parse and show contained comp fields */
comp_fields = gprs_sndcp_parse_xid(ctx, xid, sizeof(xid), NULL);
OSMO_ASSERT(comp_fields);
printf("Decoded:\n");
gprs_sndcp_dump_comp_fields(comp_fields, DSNDCP);
/* Encode comp-fields again */
rc = gprs_sndcp_compile_xid(xid_r,sizeof(xid_r), comp_fields);
printf("Result length=%i\n",rc);
printf("Encoded: %s\n", osmo_hexdump_nospc(xid, sizeof(xid)));
printf("Rencoded: %s\n", osmo_hexdump_nospc(xid_r, rc));
OSMO_ASSERT(rc == 54);
OSMO_ASSERT(memcmp(xid, xid_r, sizeof(xid)) == 0);
/* Free comp fields */
talloc_free(comp_fields);
printf("\n");
}
/* Encode and decode test with artificial test data */
static void test_xid_encode_decode(const void *ctx)
{
printf("Testing SNDCP XID-Encoder/Decoder\n");
LLIST_HEAD(comp_fields);
struct gprs_sndcp_pcomp_rfc1144_params rfc1144_params;
struct gprs_sndcp_comp_field rfc1144_comp_field;
struct gprs_sndcp_pcomp_rfc2507_params rfc2507_params;
struct gprs_sndcp_comp_field rfc2507_comp_field;
struct gprs_sndcp_pcomp_rohc_params rohc_params;
struct gprs_sndcp_comp_field rohc_comp_field;
struct gprs_sndcp_dcomp_v42bis_params v42bis_params;
struct gprs_sndcp_comp_field v42bis_comp_field;
struct gprs_sndcp_dcomp_v44_params v44_params;
struct gprs_sndcp_comp_field v44_comp_field;
struct llist_head *comp_fields_dec;
uint8_t xid[512];
unsigned int xid_len = sizeof(xid);
int rc;
memset(&rfc1144_comp_field, 0, sizeof(struct gprs_sndcp_comp_field));
memset(&rfc2507_comp_field, 0, sizeof(struct gprs_sndcp_comp_field));
memset(&rohc_comp_field, 0, sizeof(struct gprs_sndcp_comp_field));
memset(&v42bis_comp_field, 0, sizeof(struct gprs_sndcp_comp_field));
memset(&v44_comp_field, 0, sizeof(struct gprs_sndcp_comp_field));
/* Setup which NSAPIs shall make use of rfc1144 */
rfc1144_params.nsapi[0] = 5;
rfc1144_params.nsapi_len = 1;
/* Setup rfc1144 operating parameters */
rfc1144_params.s01 = 7;
/* Setup rfc1144 compression field */
rfc1144_comp_field.p = 1;
rfc1144_comp_field.entity = 0;
rfc1144_comp_field.algo = RFC_1144;
rfc1144_comp_field.comp[RFC1144_PCOMP1] = 1;
rfc1144_comp_field.comp[RFC1144_PCOMP2] = 2;
rfc1144_comp_field.comp_len = RFC1144_PCOMP_NUM;
rfc1144_comp_field.rfc1144_params = &rfc1144_params;
/* Setup which NSAPIs shall make use of rfc1144 */
rfc2507_params.nsapi[0] = 6;
rfc2507_params.nsapi_len = 1;
/* Setup rfc2507 operating parameters */
rfc2507_params.f_max_period = 256;
rfc2507_params.f_max_time = 5;
rfc2507_params.max_header = 168;
rfc2507_params.tcp_space = 15;
rfc2507_params.non_tcp_space = 15;
/* Setup rfc2507 compression field */
rfc2507_comp_field.p = 1;
rfc2507_comp_field.entity = 1;
rfc2507_comp_field.algo = RFC_2507;
rfc2507_comp_field.comp[RFC2507_PCOMP1] = 3;
rfc2507_comp_field.comp[RFC2507_PCOMP2] = 4;
rfc2507_comp_field.comp[RFC2507_PCOMP3] = 5;
rfc2507_comp_field.comp[RFC2507_PCOMP4] = 6;
rfc2507_comp_field.comp[RFC2507_PCOMP5] = 7;
rfc2507_comp_field.comp_len = RFC2507_PCOMP_NUM;
rfc2507_comp_field.rfc2507_params = &rfc2507_params;
/* Setup which NSAPIs shall make use of ROHC */
rohc_params.nsapi[0] = 5;
rohc_params.nsapi[1] = 6;
rohc_params.nsapi[2] = 7;
rohc_params.nsapi[3] = 8;
rohc_params.nsapi[4] = 9;
rohc_params.nsapi[5] = 10;
rohc_params.nsapi[6] = 11;
rohc_params.nsapi[7] = 12;
rohc_params.nsapi[8] = 13;
rohc_params.nsapi[9] = 14;
rohc_params.nsapi[10] = 15;
rohc_params.nsapi_len = 11;
/* Setup ROHC operating parameters */
rohc_params.max_cid = 15; /* default */
rohc_params.max_header = 168; /* default */
rohc_params.profile[0] = ROHC_UNCOMPRESSED;
rohc_params.profile[1] = ROHC_RTP;
rohc_params.profile[2] = ROHCV2_RTP;
rohc_params.profile[3] = ROHC_UDP;
rohc_params.profile[4] = ROHCv2_UDP;
rohc_params.profile[5] = ROHC_ESP;
rohc_params.profile[6] = ROHCV2_ESP;
rohc_params.profile[7] = ROHC_IP;
rohc_params.profile[8] = ROHCV2_IP;
rohc_params.profile[9] = ROHC_LLA;
rohc_params.profile[10] = ROHC_LLA_WITH_R_MODE;
rohc_params.profile[11] = ROHC_TCP;
rohc_params.profile[12] = ROHC_RTP_UDP_LITE;
rohc_params.profile[13] = ROHCV2_RTP_UDP_LITE;
rohc_params.profile[14] = ROHC_UDP_LITE;
rohc_params.profile[15] = ROHCV2_UDP_LITE;
rohc_params.profile_len = 16;
/* Setup ROHC compression field */
rohc_comp_field.p = 1;
rohc_comp_field.entity = 2;
rohc_comp_field.algo = ROHC;
rohc_comp_field.comp[ROHC_PCOMP1] = 8;
rohc_comp_field.comp[ROHC_PCOMP2] = 9;
rohc_comp_field.comp_len = ROHC_PCOMP_NUM;
rohc_comp_field.rohc_params = &rohc_params;
/* Setup which NSAPIs shall make use of v42bis */
v42bis_params.nsapi[0] = 5;
v42bis_params.nsapi_len = 1;
/* Setup v42bis operating parameters */
v42bis_params.p0 = 3;
v42bis_params.p1 = 2048;
v42bis_params.p2 = 20;
/* Setup v42bis compression field */
v42bis_comp_field.p = 1;
v42bis_comp_field.entity = 3;
v42bis_comp_field.algo = V42BIS;
v42bis_comp_field.comp[V42BIS_DCOMP1] = 10;
v42bis_comp_field.comp_len = V42BIS_DCOMP_NUM;
v42bis_comp_field.v42bis_params = &v42bis_params;
/* Setup which NSAPIs shall make use of v44 */
v44_params.nsapi[0] = 5;
v44_params.nsapi_len = 1;
/* Setup v44 operating parameters */
v44_params.c0 = 0x80;
v44_params.p0 = 3;
v44_params.p1t = 300;
v44_params.p1r = 300;
v44_params.p3t = 600;
v44_params.p3r = 600;
/* Setup v44 compression field */
v44_comp_field.p = 1;
v44_comp_field.entity = 3;
v44_comp_field.algo = V44;
v44_comp_field.comp[V44_DCOMP1] = 10;
v44_comp_field.comp[V44_DCOMP2] = 11;
v44_comp_field.comp_len = V44_DCOMP_NUM;
v44_comp_field.v44_params = &v44_params;
/* Add compression field(s) to list */
llist_add(&v44_comp_field.list, &comp_fields);
llist_add(&v42bis_comp_field.list, &comp_fields);
llist_add(&rfc1144_comp_field.list, &comp_fields);
llist_add(&rfc2507_comp_field.list, &comp_fields);
llist_add(&rohc_comp_field.list, &comp_fields);
printf("Test input data:\n");
gprs_sndcp_dump_comp_fields(&comp_fields, DSNDCP);
/* Encode SNDCP-XID fields */
rc = gprs_sndcp_compile_xid(xid, xid_len, &comp_fields);
OSMO_ASSERT(rc > 0);
printf("Encoded: %s (%i bytes)\n", osmo_hexdump_nospc(xid, rc), rc);
/* Parse and show contained comp fields */
comp_fields_dec = gprs_sndcp_parse_xid(ctx, xid, rc, NULL);
OSMO_ASSERT(comp_fields_dec);
printf("Decoded:\n");
gprs_sndcp_dump_comp_fields(comp_fields_dec, DSNDCP);
/* Free comp fields */
talloc_free(comp_fields_dec);
}
static struct log_info_cat gprs_categories[] = {
[DSNDCP] = {
.name = "DSNDCP",
.description =
"GPRS Sub-Network Dependent Control Protocol (SNDCP)",
.enabled = 1,.loglevel = LOGL_DEBUG,
}
};
static struct log_info info = {
.cat = gprs_categories,
.num_cat = ARRAY_SIZE(gprs_categories),
};
int main(int argc, char **argv)
{
void *xid_ctx;
osmo_init_logging(&info);
xid_ctx = talloc_named_const(NULL, 0, "xid_ctx");
test_xid_decode_realworld(xid_ctx);
test_xid_encode_decode(xid_ctx);
printf("Done\n");
talloc_report_full(xid_ctx, stderr);
OSMO_ASSERT(talloc_total_blocks(xid_ctx) == 1);
return 0;
}
/* stubs */
struct osmo_prim_hdr;
int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
{
abort();
}

11
openbsc/tests/sndcp_xid/sndcp_xid_test.ok
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@ -0,0 +1,11 @@
Testing SNDCP XID-Decoder/Encoder (real world data)
Decoded:
Result length=54
Encoded: 000100023182022789ffe0000f00a8000000010101000201020003010300040104000501050006000701070008010880000412004007
Rencoded: 000100023182022789ffe0000f00a8000000010101000201020003010300040104000501050006000701070008010880000412004007
Testing SNDCP XID-Encoder/Decoder
Test input data:
Encoded: 000100011a83010dab00208003012c012c02580258830007a000200308001402408000041200200781010c3456700040010005a80f000f82022789ffe0000f00a80000000101010002010200030103000401040005010500060007010700080108 (97 bytes)
Decoded:
Done

7
openbsc/tests/testsuite.at
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@ -129,3 +129,10 @@ AT_KEYWORDS([xid])
cat $abs_srcdir/xid/xid_test.ok > expout
AT_CHECK([$abs_top_builddir/tests/xid/xid_test], [], [expout], [ignore])
AT_CLEANUP
AT_SETUP([sndcp_xid])
AT_KEYWORDS([sndcp_xid])
cat $abs_srcdir/sndcp_xid/sndcp_xid_test.ok > expout
AT_CHECK([$abs_top_builddir/tests/sndcp_xid/sndcp_xid_test], [], [expout], [ignore])
AT_CLEANUP

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