OpenBSC February 2015

openbsc@lists.osmocom.org

4 participants
11 discussions

[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

8 years

[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

8 years, 10 months

recurring issue with OpenBSC

by Ciaby

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hi! First a small update: we finally decided to _not_ use token mode, as it confuses a lot of phones, after receiving the token message the SIM goes into an error state and the only way to recover is to reboot the phone. Now we just read the IMSI straight from the SIM (using the card python library, just like osmo-sim-auth does) and register them. Now, the issue we see is that 1-2 users every day reach a point where they can make phone calls and send messages, but they can't receive neither of them. Sometimes the problem can be fixed by running: > subscriber extension <EXT> clear-requests but this only work when there are pending requests. In other cases, the phone has to be rebooted. Did anyone encounter the same issue? Cheers Ciaby -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJUef1WAAoJEPU83OtbD4fQ69kQAI7peg30lHwbDPMXnTX80gUu 0dGsiK2iB5oWZ6Ohbs3W+/+xVoMseuG1di6Rk0XT9buN2IOR5fMfAs3INQ2EuAlV qz1RRn5Ux8uV0RJWyAJoSt7eFh3gbnDgsJ+x8SXEHQRw4rYHG2P+HXyEtncW6A6y L8/oPeIxH/LlP/55MP3KUY5BnQmN658LnJU9AFSwPkpjn2f/dj4o6mUdWo8haTTQ UWPWEdhQoeXPBqHsn2cKamT13SmiepMYAGuDEJci9LCS+J8vd70ukAP/oa1L6u1w +3+RbcNvC9fwAKDLU01b/cu630v6/mhk0lxWNlIz/kNL1aHPZe8QhP5sM4SuLtzj UaeHLxp4u2Pb7N31b3qtRA4jgl+5YFla5376F3d00jPSfZpmFggFgdRB2qWhF1m8 WucfzLc41dV1AVTdL90ISSRt1LZ/fLHBea8kgUxK+KrhBO7U7AV3PXk9of4EAf7y VKMX3KZWwtEKhpi0v3PihgW8bS/RaG3zEmsr30QXzXVaZknCfjGi8OOOB0JaHY48 o3g40YpzeyEq1gOyKKfBmtf1qk4GgLyPKfMUoTvXE2oNHmrg3ZlJldABKNzR9qz3 5hsHJ6/QGsBST1E3dphI0Zb6ubLnFwqBl02GyeJELLbtPCLPQMDicx03cqT4BjO3 vzDcPdIWg1sfSomYKMK9 =Zw4T -----END PGP SIGNATURE-----

9 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)

9 years, 1 month

Announcing OsmoDevCon 2015

by Harald Welte

Dear Osmocom.org project members, I'm happy to be able to announce the annual incarnation of OsmoDevCon. The Date is set for March 27 through 30. Venue: As usual, IN-Berlin e.V. in Berlin, Germany. Further details can be obtained from http://openbsc.osmocom.org/trac/wiki/OsmoDevCon2015 Attendance, as usual, is restricted to people with an active history in the Project by contributions in terms of code, patches, discussions, documentation or in other form. = Registration = If you have wiki access, please add yourself to the #Requested section. Alternatively, you can send me private e-mail about it. After review, your (nick)name will be listed in the #Confirmed section. Looking forward to meeting all of you again soon! -- - 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)

9 years, 2 months

baseband hopping

by Sipos Csaba

Dear list, If someone can confirm that a setting like this for baseband hopping is valid, that would be awsome: TRX0: (ARFCN=883) - TS0: MA=883,885 HSN=0 MAIO=0 (non hopping, BCCH+SDCCH4) - TS1: MA=883,885 HSN=0 MAIO=0 (hopping, TCH) - TS2: MA=883,885 HSN=0 MAIO=0 (hopping, TCH) - TS3: MA=883,885 HSN=0 MAIO=0 (hopping, TCH) - TS4: MA=883,885 HSN=0 MAIO=0 (hopping, TCH) - TS5: MA=883,885 HSN=0 MAIO=0 (hopping, TCH) - TS6: MA=883,885 HSN=0 MAIO=0 (hopping, TCH) - TS7: MA=883,885 HSN=0 MAIO=0 (hopping, TCH) TRX1: (ARFCN=885) - TS0: MA=883,885 HSN=0 MAIO=1 (non-hopping, TCH) - TS1: MA=883,885 HSN=0 MAIO=1 (hopping, TCH) - TS2: MA=883,885 HSN=0 MAIO=1 (hopping, TCH) - TS3: MA=883,885 HSN=0 MAIO=1 (hopping, TCH) - TS4: MA=883,885 HSN=0 MAIO=1 (hopping, TCH) - TS5: MA=883,885 HSN=0 MAIO=1 (hopping, TCH) - TS6: MA=883,885 HSN=0 MAIO=1 (hopping, TCH) - TS7: MA=883,885 HSN=0 MAIO=1 (hopping, TCH) This is one sector with 2 TRX configured for BB hopping. Thanks in advance! Csaba

9 years, 2 months

[Patch]: Nokia: make hopping a user changeable parameter

by Sipos Csaba

Dear Holger, Thanks for the commit on my previous patch. Here is a new one: This pacth makes hopping type (baseband or RF) a user changeable parameter. Tested with: - MetroSite: baseband and RF hopping works - UltraSite: RF hopping works As previously, the default behavior of OpenBSC is not changed. If the configuration parameter is not provided, it will default to baseband hopping, as before. It builds against the latest version of OpenBSC master. Regards, Csaba

9 years, 2 months

Re: Patch for OpenBSC [Nokia Site family]

by Sipos Csaba

Dear Holger, I think I found a better way for initialization. The attached version of the patch builds against latest master OpenBSC, contains the fixes I missed from the previous version. Tested: 1. Without using the config parameter, the reset timer defaults to 15 seconds (as before), 2. With the configuration parameter, the reset timer will use the specified value. Tested with: InSite (daisy chained, two BTSes), MetroSite and UltraSite units. Will create another patch for hopping (both baseband and sytheiser hopping works, but it needs a change in the sourcecode, like the reset timer before). There is another minor problem at the moment: UltraSite needs additional time after OMU configuration done, before it can bootstrap the RSL links. This is due to the fact that UltraSite starts to load the TRX SW after it got the "Use current" command, and it takes arouned 45-50 seconds for the TRXes to be ready for LAPD. So to first RSL bootstrap should be delayed after OMU config complete is received by the BSC. Now the RSL link is bootstrapped right after the OMU is configured and the LAPD link times out way before the TRX will be ready for LAPD. Will try to create a patch for this too, until then, a small hack can make this problem go away (changing n200 parameter to 100). Regards, Csaba ----- Eredeti üzenet ----- Feladó: "Holger Hans Peter Freyther" <holger(a)freyther.de> Címzett: "Sipos Csaba" <sipos.csaba(a)kvk.uni-obuda.hu> Elküldött üzenetek: Hétfő, 2015. Február. 2. 9:50:50 Tárgy: Re: Patch for OpenBSC [Nokia Site family] On Sun, Feb 01, 2015 at 10:53:19PM +0100, Sipos Csaba wrote: > Can you please tell me where should I initialize the timer, when the config parameter is not used (user not specified it in the cfg file)? > > I tried to look at other parts of the code but I don't see where the default values are stored, if a parameter is not set in the config file. > > Otherwise I fixed the remaining problems. It is not the best place but gsm_bts_alloc would allow you to initialize this field correctly. The other option would be when the type of the bts is set to nokia.

9 years, 2 months

SMS and SMPP+OpenBSC+Kannel

by ramesh shankar

Hello I have a question on sms Is it possible to send hex data using telnet localhost port 4242 I saw the posting in forum about SMPP+OpenBSC (march-april 2014), which talk about Kannel Can somebody suggest how to configure Kannel with OpenBSC. regards Ramesh

9 years, 2 months

openbsc Crypto

by ramesh shankar

Hello Its says in OpenBSC_crypto that "The keys will be stored in the table AuthKeys? of the hlr databse". I don't see that, is there any setting to get that. I am using sqlitebrowser to open HLR regards Ramesh

9 years, 2 months

Re: Patch for OpenBSC [Nokia Site family]

by Sipos Csaba

Dear Holger, Here it is. Patch description: This patch adds the ability to change the RESET_TIMER parameter. This change affects the Nokia Site family only, and it is important for multi-BTS setups. (eg. multiple InSite units daisychained and UltraSite). The parameter can be set in the config file with the following syntax: nokia_site bts-reset-timer <15-100>. The default value is 15 seconds. Tested with InSite, MetroSite and UltraSite units. Thanks! Csaba -------------------------------------------------------------- On Tue, Nov 11, 2014 at 04:22:50PM +0100, Sipos Csaba wrote: > Dear Holger, Hi, sorry for the delay. Please send this patch to the ML. I do not have Nokia BTSes andcan't test your patch.

9 years, 2 months

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OpenBSC February 2015