OpenBSC January 2016

openbsc@lists.osmocom.org

11 participants
43 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.

1 month

Half sided calls

by Sipos Csaba

Dear List, I am in the process of creating the Wiki page for Ettus B200/B210 with OpenBSC, GPRS and Asterisk. I am quite close, both data and calls are working, but the voice calls are half sided. The downlink direction works, but the uplink does not. I tried without Asterisk and LCR (between two phones) and still the calls are half sided. In the mean time I got these messages in the Osmo-BTS log: <0006> scheduler.c:276 PH-DATA.req: chan_nr=0x0a link_id=0x00 fn=1284768 ts=2 tr x=0 <0006> scheduler.c:1036 TCH/F has not been served !! No prim for trx=0 ts=1 at f n=1284764 to transmit. <0006> scheduler.c:1036 TCH/F has not been served !! No prim for trx=0 ts=2 at f n=1284764 to transmit. <0006> scheduler.c:379 TCH RTS.ind: chan=TCH/F chan_nr=0x09 fn=1284772 ts=1 trx= 0 <0006> scheduler.c:276 PH-DATA.req: chan_nr=0x09 link_id=0x00 fn=1284772 ts=1 tr x=0 <0006> scheduler.c:379 TCH RTS.ind: chan=TCH/F chan_nr=0x0a fn=1284772 ts=2 trx= 0 <0006> scheduler.c:276 PH-DATA.req: chan_nr=0x0a link_id=0x00 fn=1284772 ts=2 tr x=0 <0006> scheduler.c:1036 TCH/F has not been served !! No prim for trx=0 ts=1 at f n=1284768 to transmit. <0006> scheduler.c:1036 TCH/F has not been served !! No prim for trx=0 ts=2 at f n=1284768 to transmit. SMS and GPRS seems to be fine. If someone have any idea, I would love to hear it. :-) Thanks! Csaba

9 years, 2 months

[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, 2 months

[PATCH 1/2] utils: 'meas_json' utility to convert measurement feed into a JSON feed.

by Alexander Chemeris

--- openbsc/src/utils/Makefile.am | 6 +- openbsc/src/utils/meas_json.c | 169 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 174 insertions(+), 1 deletion(-) create mode 100644 openbsc/src/utils/meas_json.c diff --git a/openbsc/src/utils/Makefile.am b/openbsc/src/utils/Makefile.am index f6255a0..89f2dfb 100644 --- a/openbsc/src/utils/Makefile.am +++ b/openbsc/src/utils/Makefile.am @@ -4,7 +4,7 @@ AM_LDFLAGS = $(COVERAGE_LDFLAGS) noinst_HEADERS = meas_db.h -bin_PROGRAMS = bs11_config isdnsync +bin_PROGRAMS = bs11_config isdnsync meas_json if HAVE_SQLITE3 bin_PROGRAMS += osmo-meas-pcap2db osmo-meas-udp2db endif @@ -32,6 +32,10 @@ meas_vis_SOURCES = meas_vis.c meas_vis_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) -lcdk -lncurses meas_vis_CFLAGS = $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) +meas_json_SOURCES = meas_json.c +meas_json_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) +meas_json_CFLAGS = $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) + osmo_meas_pcap2db_SOURCES = meas_pcap2db.c meas_db.c osmo_meas_pcap2db_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) -lpcap $(SQLITE3_LIBS) osmo_meas_pcap2db_CFLAGS = $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) diff --git a/openbsc/src/utils/meas_json.c b/openbsc/src/utils/meas_json.c new file mode 100644 index 0000000..940e5e7 --- /dev/null +++ b/openbsc/src/utils/meas_json.c @@ -0,0 +1,169 @@ +/* Convert measurement report feed into JSON feed printed to stdout. + * Each measurement report is printed as a separae JSON root entry. + * All measurement reports are separated by a new line. + */ + +/* (C) 2015 by Alexander Chemeris <Alexander.Chemeris(a)fairwaves.co> + * With parts of code adopted from different places in OpenBSC. + * + * 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 <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> + +#include <netinet/in.h> + +#include <osmocom/core/socket.h> +#include <osmocom/core/msgb.h> +#include <osmocom/core/select.h> + +#include <osmocom/gsm/gsm_utils.h> + +#include <openbsc/meas_feed.h> + +static void print_meas_rep_uni_json(struct gsm_meas_rep_unidir *mru) +{ + printf("\"RXL-FULL\":%d, \"RXL-SUB\":%d, ", + rxlev2dbm(mru->full.rx_lev), + rxlev2dbm(mru->sub.rx_lev)); + printf("\"RXQ-FULL\":%d, \"RXQ-SUB\":%d", + mru->full.rx_qual, mru->sub.rx_qual); +} + +static void print_meas_rep_json(struct gsm_meas_rep *mr) +{ + int i; + + printf("\"NR\":%d", mr->nr); + + if (mr->flags & MEAS_REP_F_DL_DTX) + printf(", \"DTXd\":true"); + + printf(", \"UL_MEAS\":{"); + print_meas_rep_uni_json(&mr->ul); + printf("}"); + printf(", \"BS_POWER\":%d", mr->bs_power); + if (mr->flags & MEAS_REP_F_MS_TO) + printf(", \"MS_TO\":%d", mr->ms_timing_offset); + + if (mr->flags & MEAS_REP_F_MS_L1) { + printf(", \"L1_MS_PWR\":%d", mr->ms_l1.pwr); + printf(", \"L1_FPC\":%s", + mr->flags & MEAS_REP_F_FPC ? "true" : "false"); + printf(", \"L1_TA\":%u", mr->ms_l1.ta); + } + + if (mr->flags & MEAS_REP_F_UL_DTX) + printf(", \"DTXu\":true"); + if (mr->flags & MEAS_REP_F_BA1) + printf(", \"BA1\":true"); + if (mr->flags & MEAS_REP_F_DL_VALID) { + printf(", \"DL_MEAS\":{"); + print_meas_rep_uni_json(&mr->dl); + printf("}"); + } + + if (mr->num_cell == 7) + return; + printf(", \"NUM_NEIGH\":%u, \"NEIGH\":[", mr->num_cell); + for (i = 0; i < mr->num_cell; i++) { + struct gsm_meas_rep_cell *mrc = &mr->cell[i]; + if (i!=0) printf(", "); + printf("\"IDX\":%u, \"ARFCN\":%u, \"BSIC\":%u, \"POWER\":%d", + mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); + } + printf("]"); +} + +static void print_meas_feed_json(struct meas_feed_meas *mfm) +{ + time_t now = time(NULL); + + printf("{"); + printf("\"time\":%ld, \"imsi\":\"%s\", \"name\":\"%s\", \"scenario\":\"%s\", ", + now, mfm->imsi, mfm->name, mfm->scenario); + + printf("\"meas_rep\":{"); + print_meas_rep_json(&mfm->mr); + printf("}"); + + printf("}\n"); + +} + +static int handle_meas(struct msgb *msg) +{ + struct meas_feed_meas *mfm = (struct meas_feed_meas *) msgb_data(msg); + + print_meas_feed_json(mfm); + + return 0; +} + +static int handle_msg(struct msgb *msg) +{ + struct meas_feed_hdr *mfh = (struct meas_feed_hdr *) msgb_data(msg); + + if (mfh->version != MEAS_FEED_VERSION) + return -EINVAL; + + switch (mfh->msg_type) { + case MEAS_FEED_MEAS: + handle_meas(msg); + break; + default: + break; + } +} + +static int udp_fd_cb(struct osmo_fd *ofd, unsigned int what) +{ + int rc; + + if (what & BSC_FD_READ) { + struct msgb *msg = msgb_alloc(1024, "UDP Rx"); + + rc = read(ofd->fd, msgb_data(msg), msgb_tailroom(msg)); + if (rc < 0) + return rc; + msgb_put(msg, rc); + handle_msg(msg); + msgb_free(msg); + } + + return 0; +} + +int main(int argc, char **argv) +{ + int rc; + struct osmo_fd udp_ofd; + + udp_ofd.cb = udp_fd_cb; + rc = osmo_sock_init_ofd(&udp_ofd, AF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, 8888, OSMO_SOCK_F_BIND); + if (rc < 0) + exit(1); + + while (1) { + osmo_select_main(0); + }; + + exit(0); +} -- 1.9.1

9 years, 2 months

OsmoDevCon 2016 date poll

by Harald Welte

Dear all, IN-Berlin has confirmed the dates in April where we could book the venue. Can those eligible + interested in attending please quickly indicate their preference at http://doodle.com/poll/if263cpxieavsqiq ? Thanks! Disclaimer: OsmoDevCon is an invitation-only event for developers with proven history of contributing to any of the Osmocom projects. The fact that there is a public poll about the scheduling of the event and/or your participation in that poll does not mean a particular applicant is invited. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option."

9 years, 4 months

Smalltalk scalable SMSC project

by Holger Freyther

Hi all, new year, new approaches. In December I was tasked to think about a real SMSC with SMPP input and SS7 output (or SMPP in the future) and I wrote down my ideas[1] about data storage, approach, how to achieve scaling. What is missing fail-over but there are some ideas for this as well. The implementation will be done using Pharo and at least the first data storage will use mongodb >= 3.2. In the past my Pharo work has not been hosted in git but for this project it will change and maybe it creates some more visibility, historically documentation and debian packages were not too visible but that will be different this time as well. If you are interested in specification, Smalltalk, testing, load testing, SS7 or such please join me in the development. happy hacking holger [1] https://github.com/zecke/osmo-smsc/blob/master/README.asciidoc it will move to git.osmocom.org but I just wanted to have online asciidoc rendering.

9 years, 4 months

[PATCH 1/3] log: Add log_check_level function

by Jacob Erlbeck

This commit adds this predicate function which can be used to avoid the execution of code if a certain log level is not enabled. The function will only return 0 (false), if it is sure that a logging call for the same facility and level will not produce any output. This safety criterion shall ensure, that no logging output is lost due to the use of this predicate as a guard. On the other hand, even if the predicate returns != 0 (true), no logging output might get generated by a similar logging command. Note that the current implementation is not focussed on performance, which could be improved by using a lookup table instead of iterating through every target. Sponsored-by: On-Waves ehf --- include/osmocom/core/logging.h | 1 + src/logging.c | 39 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) diff --git a/include/osmocom/core/logging.h b/include/osmocom/core/logging.h index 1c159d0..290b33d 100644 --- a/include/osmocom/core/logging.h +++ b/include/osmocom/core/logging.h @@ -198,6 +198,7 @@ void logp2(int subsys, unsigned int level, const char *file, int line, int cont, const char *format, ...) __attribute__ ((format (printf, 6, 7))); int log_init(const struct log_info *inf, void *talloc_ctx); +int log_check_level(int subsys, unsigned int level); /* context management */ void log_reset_context(void); diff --git a/src/logging.c b/src/logging.c index 876964a..c7b1999 100644 --- a/src/logging.c +++ b/src/logging.c @@ -865,4 +865,43 @@ int log_init(const struct log_info *inf, void *ctx) return 0; } +/*! \brief Check whether a log entry will be generated. + * \returns != 0 if a log entry might get generated by at least one target */ +int log_check_level(int subsys, unsigned int level) +{ + struct log_target *tar; + + if (subsys < 0) + subsys = subsys_lib2index(subsys); + + if (subsys > osmo_log_info->num_cat) + subsys = DLGLOBAL; + + /* TODO: The following could/should be cached (update on config) */ + + llist_for_each_entry(tar, &osmo_log_target_list, entry) { + struct log_category *category; + + category = &tar->categories[subsys]; + /* subsystem is not supposed to be logged */ + if (!category->enabled) + continue; + + /* Check the global log level */ + if (tar->loglevel != 0 && level < tar->loglevel) + continue; + + /* Check the category log level */ + if (tar->loglevel == 0 && category->loglevel != 0 && + level < category->loglevel) + continue; + + /* This might get logged (ignoring filters) */ + return 1; + } + + /* We are sure, that this will not be logged. */ + return 0; +} + /*! @} */ -- 1.9.1

9 years, 4 months

FIXME: TODO: do better

by Neels Hofmeyr

Would anyone like to prevent this commit from reaching master? ;) Thanks! ~Neels commit 76af8ad075e7857983ef102f80440ee716958482 Author: Neels Hofmeyr <nhofmeyr(a)sysmocom.de> Date: Thu Jan 28 14:26:05 2016 +0100 add fixme comment for todo comment :/ diff --git a/openbsc/src/libmsc/osmo_msc.c b/openbsc/src/libmsc/osmo_msc.c index b4facff..4bea699 100644 --- a/openbsc/src/libmsc/osmo_msc.c +++ b/openbsc/src/libmsc/osmo_msc.c @@ -48,7 +48,7 @@ static int msc_compl_l3(struct gsm_subscriber_connection *conn, struct msgb *msg gsm0408_new_conn(conn); gsm0408_dispatch(conn, msg); - /* TODO: do better */ + /* TODO: do better */ /* FIXME: do the TODO comment better in the first place! */ if (conn->silent_call) return BSC_API_CONN_POL_ACCEPT; if (conn->loc_operation || conn->sec_operation || conn->anch_operation) -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Holger Freyther, Harald Welte

9 years, 4 months

[PATCH 0/3] Cleanup and restructure

by suraev＠alumni.ntnu.no

From: Max <msuraev(a)sysmocom.de> This small patchset enables future hardware support by restructuring sources and cleaning up few bits here and there. Max (3): Cleanup build Rename define for direct hw access Restructure sources .gitignore | 2 ++ configure.ac | 2 +- src/Makefile.am | 51 +++++++++++++++++++-------------- src/{ => osmo-bts-sysmo}/femtobts.c | 0 src/{ => osmo-bts-sysmo}/femtobts.h | 0 src/{ => osmo-bts-sysmo}/sysmo_l1_fwd.c | 0 src/{ => osmo-bts-sysmo}/sysmo_l1_hw.c | 4 +-- src/{ => osmo-bts-sysmo}/sysmo_l1_if.c | 0 src/{ => osmo-bts-sysmo}/sysmo_l1_if.h | 0 src/osmobts_sock.cpp | 2 +- src/pcu_l1_if.cpp | 6 ++-- 11 files changed, 39 insertions(+), 28 deletions(-) rename src/{ => osmo-bts-sysmo}/femtobts.c (100%) rename src/{ => osmo-bts-sysmo}/femtobts.h (100%) rename src/{ => osmo-bts-sysmo}/sysmo_l1_fwd.c (100%) rename src/{ => osmo-bts-sysmo}/sysmo_l1_hw.c (97%) rename src/{ => osmo-bts-sysmo}/sysmo_l1_if.c (100%) rename src/{ => osmo-bts-sysmo}/sysmo_l1_if.h (100%) -- 2.5.0

9 years, 4 months

cscn copyright question

by Neels Hofmeyr

Is this a proper way to copyright OsmoCSCN? I'm trying to mention both the facts that it's something new as well as that it is based on a copy-paste of OsmoNITB: /* (C) 2016 by sysmocom s.f.m.c. GmbH <info(a)sysmocom.de> * All Rights Reserved * * Based on OsmoNITB: * (C) 2008-2010 by Harald Welte <laforge(a)gnumonks.org> * (C) 2009-2012 by Holger Hans Peter Freyther <zecke(a)selfish.org> * All Rights Reserved [...] Thanks! ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Holger Freyther, Harald Welte

9 years, 4 months

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OpenBSC January 2016