OpenBSC October 2014

openbsc@lists.osmocom.org

10 participants
22 discussions

by mosbah abdelkader

> I don't understand. This callback will be called with data you need to write > to the network. In case of MTP Level3 you will need to wrap that around the > msgb you got. I means: is the interaction with mtp3 layer implemented (is sending sccp data by mtp3 implemented by the library?)? Also, what about the reception of data from mtp3 layer. is that implemented in the sccp lib. I am asking these questions because I see the code of mtp3 in the lib but no significant call is present in the sccp part of the lib. Thank you for your help.

4 weeks

[PATCH 0/4] core/conv: Fast Viterbi decoding

by Thomas Tsou

Hi all, This patch set adds to libosmocore an optimized Viterbi decodeer for architecture specific (Intel SSE) and non-specific cases. The implementation covers codes with constraint lengths of K=5 and K=7 and rates 1/4 to 3/4, which make up the majority of GSM use cases. Speedup from the current implementation is in the range of 5 to 20 depending on the processor and code type. API is unchanged. Tested on Haswell (i7-4770K) and Atom (D2550). Additional test codes from osmo-bts are included. Further tests for AWGN bit-error-rate and benchmarks can be found in the following repository. https://github.com/ttsou/osmo-conv-test Here are some examples. Bit error test for GPRS CS2 with SNR of 5 dB and 100000 bursts. $ ./conv_test -c 2 -e -r 5 -i 100000 ================================================= [+] Testing: GPRS CS2 [.] Specs: (N=2, K=5, non-recursive, flushed, not punctured) [.] Input length : ret = 290 exp = 290 -> OK [.] Output length : ret = 588 exp = 588 -> OK [.] BER tests: [..] Testing base: [..] Input BER.......................... 0.042443 [..] Output BER......................... 0.000006 [..] Output FER......................... 0.001350 (135) [..] Testing SIMD: [..] Input BER.......................... 0.042460 [..] Output BER......................... 0.000005 [..] Output FER......................... 0.001240 (124) Timed AFS benchmark with 8 threads and 100000 bursts per thread. $ ./conv_test -b -c 10 -j 8 -i 100000 ================================================= [+] Testing: GSM TCH/AFS 6.7 [.] Specs: (N=4, K=5, recursive, flushed, punctured) [.] Input length : ret = 140 exp = 140 -> OK [.] Output length : ret = 448 exp = 448 -> OK [.] Performance benchmark: [..] Encoding / Decoding 800000 bursts on 8 thread(s): [..] Testing base: [..] Elapsed time....................... 4.320001 secs [..] Rate............................... 25.925920 Mbps [..] Testing SIMD: [..] Elapsed time....................... 0.458272 secs [..] Rate............................... 244.396341 Mbps [..] Speedup............................ 9.426718 -TT

9 years, 1 month

[PATCH] Use generic auth API

by Max

Signed-off-by: Max <max.suraev(a)fairwaves.co> --- openbsc/src/libmsc/auth.c | 69 +++++++++++++++++++---------------------------- 1 file changed, 28 insertions(+), 41 deletions(-) diff --git a/openbsc/src/libmsc/auth.c b/openbsc/src/libmsc/auth.c index 10d8edf..d04b2fc 100644 --- a/openbsc/src/libmsc/auth.c +++ b/openbsc/src/libmsc/auth.c @@ -24,47 +24,11 @@ #include <openbsc/debug.h> #include <openbsc/auth.h> #include <openbsc/gsm_data.h> - -#include <osmocom/gsm/comp128.h> +#include <osmocom/crypt/auth.h> #include <stdlib.h> -static int -_use_xor(struct gsm_auth_info *ainfo, struct gsm_auth_tuple *atuple) -{ - int i, l = ainfo->a3a8_ki_len; - - if ((l > A38_XOR_MAX_KEY_LEN) || (l < A38_XOR_MIN_KEY_LEN)) { - LOGP(DMM, LOGL_ERROR, "Invalid XOR key (len=%d) %s\n", - ainfo->a3a8_ki_len, - osmo_hexdump(ainfo->a3a8_ki, ainfo->a3a8_ki_len)); - return -1; - } - - for (i=0; i<4; i++) - atuple->sres[i] = atuple->rand[i] ^ ainfo->a3a8_ki[i]; - for (i=4; i<12; i++) - atuple->kc[i-4] = atuple->rand[i] ^ ainfo->a3a8_ki[i]; - - return 0; -} - -static int -_use_comp128_v1(struct gsm_auth_info *ainfo, struct gsm_auth_tuple *atuple) -{ - if (ainfo->a3a8_ki_len != A38_COMP128_KEY_LEN) { - LOGP(DMM, LOGL_ERROR, "Invalid COMP128v1 key (len=%d) %s\n", - ainfo->a3a8_ki_len, - osmo_hexdump(ainfo->a3a8_ki, ainfo->a3a8_ki_len)); - return -1; - } - - comp128(ainfo->a3a8_ki, atuple->rand, atuple->sres, atuple->kc); - - return 0; -} - /* Return values * -1 -> Internal error * 0 -> Not available @@ -76,6 +40,11 @@ int auth_get_tuple_for_subscr(struct gsm_auth_tuple *atuple, { struct gsm_auth_info ainfo; int i, rc; + static struct osmo_sub_auth_data auth = { + .type = OSMO_AUTH_TYPE_GSM + }; + struct osmo_auth_vector _vec; + struct osmo_auth_vector *vec = &_vec; /* Get subscriber info (if any) */ rc = db_get_authinfo_for_subscr(&ainfo, subscr); @@ -109,13 +78,23 @@ int auth_get_tuple_for_subscr(struct gsm_auth_tuple *atuple, return 0; case AUTH_ALGO_XOR: - if (_use_xor(&ainfo, atuple)) - return 0; + auth.algo = OSMO_AUTH_ALG_XOR; + if ((ainfo.a3a8_ki_len > A38_XOR_MAX_KEY_LEN) || (ainfo.a3a8_ki_len < A38_XOR_MIN_KEY_LEN)) { + LOGP(DMM, LOGL_ERROR, "Invalid XOR key (len=%d) %s\n", + ainfo.a3a8_ki_len, + osmo_hexdump(ainfo.a3a8_ki, ainfo.a3a8_ki_len)); + return -1; + } break; case AUTH_ALGO_COMP128v1: - if (_use_comp128_v1(&ainfo, atuple)) - return 0; + auth.algo = OSMO_AUTH_ALG_COMP128v1; + if (ainfo.a3a8_ki_len != A38_COMP128_KEY_LEN) { + LOGP(DMM, LOGL_ERROR, "Invalid COMP128v1 key (len=%d) %s\n", + ainfo.a3a8_ki_len, + osmo_hexdump(ainfo.a3a8_ki, ainfo.a3a8_ki_len)); + return -1; + } break; default: @@ -124,6 +103,14 @@ int auth_get_tuple_for_subscr(struct gsm_auth_tuple *atuple, return 0; } + memcpy(auth.u.gsm.ki, ainfo.a3a8_ki, sizeof(auth.u.gsm.ki)); + + if (osmo_auth_gen_vec(vec, &auth, atuple->rand) < 0) + return -1; + + memcpy(atuple->sres, vec->sres, 4); + memcpy(atuple->kc, vec->kc, 8); + db_sync_lastauthtuple_for_subscr(atuple, subscr); DEBUGP(DMM, "Need to do authentication and ciphering\n"); -- 1.9.1

10 years

Final review of L1SAP ported to current maste

by Harald Welte

Dear all, the valuable L1SAP abstraction has been sitting out of master for too long time. It is a pity that this has taken so long. I've finally been able to put some time into osmo-bts again and reviewed the following patch series. It consists of mostly Andreas' work, interspersed with smaller patches/fixups that I introduced after the respective original patch from Andreas. I have started a sysmobts between all of the major steps in this patch series and did a short manual tests involving registration (LU) of two MS, mobile-to-mobile call and vty-to-mobile SMS. So far I couldn't see any problems. What has not been tested yet is the PCU interface as well as encryption support. I plan to do this later this week. I intend to merge the code after this current review cycle. Please take your time to have a look and provide feedback (if any), so we can get this over and work on new features again, rather than infrastrutural changes. I didn't yet rebase the osmo-bts-trx interface on top of the L1SAP, as I don't have a hardware setup for it, and I will leave it to the owners of such hardware to publish/push the respective code after L1SAP is merged. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

10 years, 2 months

[PATCH] Fix bunch of printf warnings

by Max

Signed-off-by: Max <max.suraev(a)fairwaves.co> --- openbsc/src/libbsc/bsc_api.c | 4 ++-- openbsc/src/libmgcp/mgcp_protocol.c | 2 +- openbsc/tests/abis/abis_test.c | 16 ++++++++-------- openbsc/tests/gbproxy/gbproxy_test.c | 16 ++++++++-------- 4 files changed, 19 insertions(+), 19 deletions(-) diff --git a/openbsc/src/libbsc/bsc_api.c b/openbsc/src/libbsc/bsc_api.c index 5ce0bc4..f4121de 100644 --- a/openbsc/src/libbsc/bsc_api.c +++ b/openbsc/src/libbsc/bsc_api.c @@ -416,7 +416,7 @@ static void handle_ass_compl(struct gsm_subscriber_connection *conn, gh = msgb_l3(msg); if (msgb_l3len(msg) - sizeof(*gh) != 1) { - LOGP(DMSC, LOGL_ERROR, "Assignment Compl invalid: %u\n", + LOGP(DMSC, LOGL_ERROR, "Assignment Compl invalid: %lu\n", msgb_l3len(msg) - sizeof(*gh)); return; } @@ -461,7 +461,7 @@ static void handle_ass_fail(struct gsm_subscriber_connection *conn, gh = msgb_l3(msg); if (msgb_l3len(msg) - sizeof(*gh) != 1) { - LOGP(DMSC, LOGL_ERROR, "assignemnt failure unhandled: %u\n", + LOGP(DMSC, LOGL_ERROR, "assignemnt failure unhandled: %lu\n", msgb_l3len(msg) - sizeof(*gh)); rr_failure = NULL; } else { diff --git a/openbsc/src/libmgcp/mgcp_protocol.c b/openbsc/src/libmgcp/mgcp_protocol.c index 79422fe..00315fb 100644 --- a/openbsc/src/libmgcp/mgcp_protocol.c +++ b/openbsc/src/libmgcp/mgcp_protocol.c @@ -308,7 +308,7 @@ static int write_response_sdp(struct mgcp_endpoint *endp, return len; buffer_too_small: - LOGP(DMGCP, LOGL_ERROR, "SDP buffer too small: %d (needed %d)\n", + LOGP(DMGCP, LOGL_ERROR, "SDP buffer too small: %zu (needed %d)\n", size, len); return -1; } diff --git a/openbsc/tests/abis/abis_test.c b/openbsc/tests/abis/abis_test.c index e7e78d2..f82740f 100644 --- a/openbsc/tests/abis/abis_test.c +++ b/openbsc/tests/abis/abis_test.c @@ -61,11 +61,11 @@ static void test_simple_sw_config(void) } if (descr[0].len != 13) { - printf("WRONG SIZE: %d\n", descr[0].len); + printf("WRONG SIZE: %zu\n", descr[0].len); abort(); } - printf("Start: %u len: %zu\n", descr[0].start - simple_config, descr[0].len); + printf("Start: %lu len: %zu\n", descr[0].start - simple_config, descr[0].len); printf("file_id: %s\n", osmo_hexdump(descr[0].file_id, descr[0].file_id_len)); printf("file_ver: %s\n", osmo_hexdump(descr[0].file_ver, descr[0].file_ver_len)); } @@ -99,20 +99,20 @@ static void test_dual_sw_config(void) } if (descr[0].len != 13) { - printf("WRONG SIZE0: %d\n", descr[0].len); + printf("WRONG SIZE0: %zu\n", descr[0].len); abort(); } if (descr[1].len != 13) { - printf("WRONG SIZE1: %d\n", descr[1].len); + printf("WRONG SIZE1: %zu\n", descr[1].len); abort(); } - printf("Start: %u len: %zu\n", descr[0].start - dual_config, descr[0].len); + printf("Start: %lu len: %zu\n", descr[0].start - dual_config, descr[0].len); printf("file_id: %s\n", osmo_hexdump(descr[0].file_id, descr[0].file_id_len)); printf("file_ver: %s\n", osmo_hexdump(descr[0].file_ver, descr[0].file_ver_len)); - printf("Start: %u len: %zu\n", descr[1].start - dual_config, descr[1].len); + printf("Start: %lu len: %zu\n", descr[1].start - dual_config, descr[1].len); printf("file_id: %s\n", osmo_hexdump(descr[1].file_id, descr[1].file_id_len)); printf("file_ver: %s\n", osmo_hexdump(descr[1].file_ver, descr[1].file_ver_len)); } @@ -129,11 +129,11 @@ static void test_sw_selection(void) abort(); } - printf("Start: %u len: %zu\n", descr[0].start - load_config, descr[0].len); + printf("Start: %lu len: %zu\n", descr[0].start - load_config, descr[0].len); printf("file_id: %s\n", osmo_hexdump(descr[0].file_id, descr[0].file_id_len)); printf("file_ver: %s\n", osmo_hexdump(descr[0].file_ver, descr[0].file_ver_len)); - printf("Start: %u len: %zu\n", descr[1].start - load_config, descr[1].len); + printf("Start: %lu len: %zu\n", descr[1].start - load_config, descr[1].len); printf("file_id: %s\n", osmo_hexdump(descr[1].file_id, descr[1].file_id_len)); printf("file_ver: %s\n", osmo_hexdump(descr[1].file_ver, descr[1].file_ver_len)); diff --git a/openbsc/tests/gbproxy/gbproxy_test.c b/openbsc/tests/gbproxy/gbproxy_test.c index 5aa301b..161f7fd 100644 --- a/openbsc/tests/gbproxy/gbproxy_test.c +++ b/openbsc/tests/gbproxy/gbproxy_test.c @@ -898,7 +898,7 @@ int gprs_ns_rcvmsg(struct gprs_ns_inst *nsi, struct msgb *msg, int gprs_ns_callback(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, struct msgb *msg, uint16_t bvci) { - printf("CALLBACK, event %d, msg length %d, bvci 0x%04x\n%s\n\n", + printf("CALLBACK, event %d, msg length %zu, bvci 0x%04x\n%s\n\n", event, msgb_bssgp_len(msg), bvci, osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); @@ -925,15 +925,15 @@ ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, real_sendto = dlsym(RTLD_NEXT, "sendto"); if (dest_host == REMOTE_BSS_ADDR) - printf("MESSAGE to BSS at 0x%08x:%d, msg length %d\n%s\n\n", + printf("MESSAGE to BSS at 0x%08x:%d, msg length %zu\n%s\n\n", dest_host, dest_port, len, osmo_hexdump(buf, len)); else if (dest_host == REMOTE_SGSN_ADDR) - printf("MESSAGE to SGSN at 0x%08x:%d, msg length %d\n%s\n\n", + printf("MESSAGE to SGSN at 0x%08x:%d, msg length %zu\n%s\n\n", dest_host, dest_port, len, osmo_hexdump(buf, len)); else if (dest_host == REMOTE_SGSN2_ADDR) - printf("MESSAGE to SGSN 2 at 0x%08x:%d, msg length %d\n%s\n\n", + printf("MESSAGE to SGSN 2 at 0x%08x:%d, msg length %zu\n%s\n\n", dest_host, dest_port, len, osmo_hexdump(buf, len)); else @@ -957,15 +957,15 @@ int gprs_ns_sendmsg(struct gprs_ns_inst *nsi, struct msgb *msg) if (nsei == SGSN_NSEI) printf("NS UNITDATA MESSAGE to SGSN, BVCI 0x%04x, " - "msg length %d (%s)\n", + "msg length %zu (%s)\n", bvci, len, __func__); else if (nsei == SGSN2_NSEI) printf("NS UNITDATA MESSAGE to SGSN 2, BVCI 0x%04x, " - "msg length %d (%s)\n", + "msg length %zu (%s)\n", bvci, len, __func__); else printf("NS UNITDATA MESSAGE to BSS, BVCI 0x%04x, " - "msg length %d (%s)\n", + "msg length %zu (%s)\n", bvci, len, __func__); if (received_messages) { @@ -1195,7 +1195,7 @@ static int gprs_process_message(struct gprs_ns_inst *nsi, const char *text, stru struct msgb *msg; int ret; if (data_len > NS_ALLOC_SIZE - NS_ALLOC_HEADROOM) { - fprintf(stderr, "message too long: %d\n", data_len); + fprintf(stderr, "message too long: %zu\n", data_len); return -1; } -- 1.9.1

10 years, 7 months

SGSN bug report

by Pierre Kim

Hello, While testing with multiple devices I found a problem where Samsung phones don't correctly respond to identity request messages. Attached is the pcap file of the GPRS-NS transmission. Regards, Pierre

10 years, 7 months

[PATCH] Replace ad-hoc function with generic one from libosmocore

by Max

Signed-off-by: Max <max.suraev(a)fairwaves.co> --- openbsc/src/osmo-bsc/osmo_bsc_bssap.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/openbsc/src/osmo-bsc/osmo_bsc_bssap.c b/openbsc/src/osmo-bsc/osmo_bsc_bssap.c index dda3157..c2bbbd3 100644 --- a/openbsc/src/osmo-bsc/osmo_bsc_bssap.c +++ b/openbsc/src/osmo-bsc/osmo_bsc_bssap.c @@ -29,16 +29,6 @@ #include <osmocom/gsm/protocol/gsm_08_08.h> #include <osmocom/gsm/gsm0808.h> -#include <arpa/inet.h> - -static uint16_t read_data16(const uint8_t *data) -{ - uint16_t res; - - memcpy(&res, data, sizeof(res)); - return res; -} - /* * helpers for the assignment command */ @@ -154,7 +144,7 @@ static int bssmap_handle_paging(struct osmo_msc_data *msc, * Support paging to all network or one BTS at one LAC */ if (data_length == 3 && data[0] == CELL_IDENT_LAC) { - lac = ntohs(read_data16(&data[1])); + lac = osmo_load16be(&data[1]); } else if (data_length > 1 || (data[0] & 0x0f) != CELL_IDENT_BSS) { LOGP(DMSC, LOGL_ERROR, "Unsupported Cell Identifier List: %s\n", osmo_hexdump(data, data_length)); return -1; @@ -321,7 +311,7 @@ static int bssmap_handle_assignm_req(struct osmo_bsc_sccp_con *conn, goto reject; } - conn->cic = ntohs(read_data16(TLVP_VAL(&tp, GSM0808_IE_CIRCUIT_IDENTITY_CODE))); + conn->cic = osmo_load16be(TLVP_VAL(&tp, GSM0808_IE_CIRCUIT_IDENTITY_CODE)); timeslot = conn->cic & 0x1f; multiplex = (conn->cic & ~0x1f) >> 5; -- 1.9.1

10 years, 8 months

cfu support

by ☎

Hi all. Is stuff from ETSI TS 100 543 supported? I mean all the "call forwarding" features like CFU, CFB, CFNRy and CFNRc. If yes than how to configure that? If not that what's missing? -- best regards, Max, http://fairwaves.co

10 years, 8 months

Registering Phones on USRP1

by Edwin Reed-Sanchez

Total new to SDR and Osmocom. I have USRP1 with clock-tamer installed. 1 daughtercard - RFX1800 <https://www.ettus.com/product/details/RFX1800>(I believe) I have been following this tutorial: http://openbsc.osmocom.org/trac/wiki/network_from_scratch My phones can see network but not register. Nothing comes up in the log file when phones try to connect. Not sure if its a config problem, or the external clock tamer, or something else. Attached is configs and screenshots Thanks, E

10 years, 8 months

end2end test with fakeBTS

by ☎

Hi all. I've found pretty interesting test case in ofono-end-to-end folder of osmo-st-openbsc-test repo. Sadly the documentation is not there. What does it do exactly and which hardware (client-side obviously :) is required for the test? How do I run it? Using some magic gst command? -- best regards, Max, http://fairwaves.co

10 years, 8 months

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OpenBSC October 2014