February 2022 - gerrit-log - lists.osmocom.org

Change in libosmocore[2021q4]: gsm0808: Test if we properly decode a SRVCC cell identifier list

by pespin

pespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmocore/+/27230 ) Change subject: gsm0808: Test if we properly decode a SRVCC cell identifier list ...................................................................... gsm0808: Test if we properly decode a SRVCC cell identifier list We don't handle this correctly, as we decided to overload the meaning of 0b1011 in a cell identifier list (defined by 3GPP as used in SRVCC) with something osmocom proprietary. Change-Id: I608220e8e5dd5a44f85c6bc5ea04622a2cad24ec --- M tests/gsm0808/gsm0808_test.c 1 file changed, 13 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/30/27230/1 diff --git a/tests/gsm0808/gsm0808_test.c b/tests/gsm0808/gsm0808_test.c index 3fff005..d0560d5 100644 --- a/tests/gsm0808/gsm0808_test.c +++ b/tests/gsm0808/gsm0808_test.c @@ -1072,6 +1072,18 @@ msgb_free(msg); } +static void test_gsm0808_dec_cell_id_list_srvcc() +{ + /* taken from a pcap file of a real-world 3rd party MSC (SYS#5838) */ + const uint8_t enc_cil[] = { 0x0b, 0x2, 0xf2, 0x10, 0x4e, 0x20, 0x15, 0xbe}; + struct gsm0808_cell_id_list2 dec_cil; + int rc; + + rc = gsm0808_dec_cell_id_list2(&dec_cil, enc_cil, sizeof(enc_cil)); + /* Not yet supported: */ + OSMO_ASSERT(rc == -EINVAL); +} + static void test_gsm0808_enc_dec_cell_id_list_lac() { struct gsm0808_cell_id_list2 enc_cil; @@ -2490,6 +2502,7 @@ test_gsm0808_enc_dec_cell_id_list_multi_ci(); test_gsm0808_enc_dec_cell_id_list_multi_lac_and_ci(); test_gsm0808_enc_dec_cell_id_list_multi_global(); + test_gsm0808_dec_cell_id_list_srvcc(); test_cell_id_list_add(); -- To view, visit https://gerrit.osmocom.org/c/libosmocore/+/27230 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmocore Gerrit-Branch: 2021q4 Gerrit-Change-Id: I608220e8e5dd5a44f85c6bc5ea04622a2cad24ec Gerrit-Change-Number: 27230 Gerrit-PatchSet: 1 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-CC: laforge <laforge(a)osmocom.org> Gerrit-MessageType: newchange

3 years, 4 months

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Change in osmo-bsc[master]: bts: Add explicit switch case for Cell Id SAI

by pespin

pespin has submitted this change. ( https://gerrit.osmocom.org/c/osmo-bsc/+/27228 ) Change subject: bts: Add explicit switch case for Cell Id SAI ...................................................................... bts: Add explicit switch case for Cell Id SAI This patch imposes no logical change in the code on itself, but makes sure people compiling osmo-bsc uses an old enough libosmocore implementing Cell Identifier SAI. This is important since adding the SAI ID (CELL_IDENT_SAI) displaced CELL_IDENT_WHOLE_GLOBAL_PS to a new number outside of the 3GPP range for cell IDS (4 bits, this way we garantee we won't have the same problem again). This means there was an ABI breakage (see Depends below). As a result, using an osmo-bsc compiled against an older libosmocore , and then using at runtime against a newer version of libosmocore, will most probably provoke some RIM features to not work properly, since libosmocore will handle CGI-PS cell ids sent by osmo-bsc as SAI ones, and most probably do wrong comparisons when matching (they only match up to LAI included). ABI break analysis: osmo-bsc uses CELL_IDENT_WHOLE_GLOBAL_PS in: * gsm0808_dec_cell_id_list2() -> this is called on stuff received from the network, so it's actually fine handling it correctly as CELL_IDENT_UTRAN_SAI instead of CGI_PS. * gsm0808_cell_id_list_add same_cell_id_list_entries gsm0808_enc_cell_id_list2 cell_id_to_cgi-> On old osmo-bsc, When CELL_IDENT_WHOLE_GLOBAL_PS is passed to be encoded as CGI, RAC byte is taken for encoding instead of 2nd CI byte. * gsm0808_cell_ids_match gsm0808_cell_id_u_match cell_id_to_cgi -> If CELL_IDENT_WHOLE_GLOBAL_PS as 0x11 (CELL_IDENT_UTRAN_SAI), 1 byte offset when comparing (1 byte of RAC is taken converting to CGI instead of the 2nd byte of CI). That means match would be wrong if 2nd byte of CI differs. Related: SYS#5838 Depends: libosmocore.git Change-Id Id25e563febdb7640174540136225f399515a0089 Change-Id: I70972efffefd57fd36332fab539683696c32f4a5 --- M TODO-RELEASE M src/osmo-bsc/bts.c 2 files changed, 2 insertions(+), 0 deletions(-) Approvals: pespin: Looks good to me, approved Jenkins Builder: Verified diff --git a/TODO-RELEASE b/TODO-RELEASE index d0852fc..e0c43d9 100644 --- a/TODO-RELEASE +++ b/TODO-RELEASE @@ -7,3 +7,4 @@ # If any interfaces have been added since the last public release: c:r:a + 1. # If any interfaces have been removed or changed since the last public release: c:r:0. #library what description / commit summary line +libosmogsm >1.6.0 required due to CELL_IDENT_WHOLE_GLOBAL_PS/SAI ABI breakage diff --git a/src/osmo-bsc/bts.c b/src/osmo-bsc/bts.c index 1461585..c3e87b3 100644 --- a/src/osmo-bsc/bts.c +++ b/src/osmo-bsc/bts.c @@ -524,6 +524,7 @@ case CELL_IDENT_UTRAN_PLMN_LAC_RNC: case CELL_IDENT_UTRAN_RNC: case CELL_IDENT_UTRAN_LAC_RNC: + case CELL_IDENT_SAI: return false; default: OSMO_ASSERT(false); -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/27228 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Change-Id: I70972efffefd57fd36332fab539683696c32f4a5 Gerrit-Change-Number: 27228 Gerrit-PatchSet: 2 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: merged

3 years, 4 months

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Change in osmo-bsc[master]: bts: Add explicit switch case for Cell Id SAI

by pespin

pespin has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-bsc/+/27228 ) Change subject: bts: Add explicit switch case for Cell Id SAI ...................................................................... Patch Set 2: Code-Review+2 (1 comment) Patchset: PS2: Merging as requested by Harald in private as he agreeing with the fix in general terms. -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/27228 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Change-Id: I70972efffefd57fd36332fab539683696c32f4a5 Gerrit-Change-Number: 27228 Gerrit-PatchSet: 2 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-Comment-Date: Wed, 16 Feb 2022 18:00:28 +0000 Gerrit-HasComments: Yes Gerrit-Has-Labels: Yes Gerrit-MessageType: comment

3 years, 4 months

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Change in osmo-bsc[master]: bts: Add explicit switch case for Cell Id SAI

by pespin

Attention is currently required from: pespin. Hello Jenkins Builder, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/c/osmo-bsc/+/27228 to look at the new patch set (#2). Change subject: bts: Add explicit switch case for Cell Id SAI ...................................................................... bts: Add explicit switch case for Cell Id SAI This patch imposes no logical change in the code on itself, but makes sure people compiling osmo-bsc uses an old enough libosmocore implementing Cell Identifier SAI. This is important since adding the SAI ID (CELL_IDENT_SAI) displaced CELL_IDENT_WHOLE_GLOBAL_PS to a new number outside of the 3GPP range for cell IDS (4 bits, this way we garantee we won't have the same problem again). This means there was an ABI breakage (see Depends below). As a result, using an osmo-bsc compiled against an older libosmocore , and then using at runtime against a newer version of libosmocore, will most probably provoke some RIM features to not work properly, since libosmocore will handle CGI-PS cell ids sent by osmo-bsc as SAI ones, and most probably do wrong comparisons when matching (they only match up to LAI included). ABI break analysis: osmo-bsc uses CELL_IDENT_WHOLE_GLOBAL_PS in: * gsm0808_dec_cell_id_list2() -> this is called on stuff received from the network, so it's actually fine handling it correctly as CELL_IDENT_UTRAN_SAI instead of CGI_PS. * gsm0808_cell_id_list_add same_cell_id_list_entries gsm0808_enc_cell_id_list2 cell_id_to_cgi-> On old osmo-bsc, When CELL_IDENT_WHOLE_GLOBAL_PS is passed to be encoded as CGI, RAC byte is taken for encoding instead of 2nd CI byte. * gsm0808_cell_ids_match gsm0808_cell_id_u_match cell_id_to_cgi -> If CELL_IDENT_WHOLE_GLOBAL_PS as 0x11 (CELL_IDENT_UTRAN_SAI), 1 byte offset when comparing (1 byte of RAC is taken converting to CGI instead of the 2nd byte of CI). That means match would be wrong if 2nd byte of CI differs. Related: SYS#5838 Depends: libosmocore.git Change-Id Id25e563febdb7640174540136225f399515a0089 Change-Id: I70972efffefd57fd36332fab539683696c32f4a5 --- M TODO-RELEASE M src/osmo-bsc/bts.c 2 files changed, 2 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/28/27228/2 -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/27228 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Change-Id: I70972efffefd57fd36332fab539683696c32f4a5 Gerrit-Change-Number: 27228 Gerrit-PatchSet: 2 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Attention: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: newpatchset

3 years, 4 months

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Change in docker-playground[master]: debian-bullseye-erlang: Build rebar3 from source

by pespin

pespin has submitted this change. ( https://gerrit.osmocom.org/c/docker-playground/+/27214 ) Change subject: debian-bullseye-erlang: Build rebar3 from source ...................................................................... debian-bullseye-erlang: Build rebar3 from source This way we ensure it is always built against the same erlang OTP installed in the system. Change-Id: I6cd8a61ca52c7beda98b357f82ce42eba54e196b --- M debian-bullseye-erlang/Dockerfile 1 file changed, 6 insertions(+), 2 deletions(-) Approvals: pespin: Looks good to me, approved Jenkins Builder: Verified diff --git a/debian-bullseye-erlang/Dockerfile b/debian-bullseye-erlang/Dockerfile index b5d8f5b..15da137 100644 --- a/debian-bullseye-erlang/Dockerfile +++ b/debian-bullseye-erlang/Dockerfile @@ -16,8 +16,12 @@ rebar # add rebar3 -ADD https://s3.amazonaws.com/rebar3/rebar3 /usr/bin/rebar3 -RUN chmod 0755 /usr/bin/rebar3 +ARG REBAR3_VERSION="3.18.0" +ADD https://github.com/erlang/rebar3/archive/refs/tags/${REBAR3_VERSION}.tar.gz /tmp/rebar3.tar.gz +RUN tar -zxf /tmp/rebar3.tar.gz && \ + cd rebar3-${REBAR3_VERSION} && \ + ./bootstrap && \ + install -Dm0755 "rebar3" "/usr/bin/rebar3" # install ninimal build utilities as well as system utilities RUN apt-get update && \ -- To view, visit https://gerrit.osmocom.org/c/docker-playground/+/27214 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: docker-playground Gerrit-Branch: master Gerrit-Change-Id: I6cd8a61ca52c7beda98b357f82ce42eba54e196b Gerrit-Change-Number: 27214 Gerrit-PatchSet: 3 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: merged

3 years, 4 months

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Change in docker-playground[master]: debian-bullseye-erlang: Build rebar3 from source

by pespin

pespin has posted comments on this change. ( https://gerrit.osmocom.org/c/docker-playground/+/27214 ) Change subject: debian-bullseye-erlang: Build rebar3 from source ...................................................................... Patch Set 3: (1 comment) Patchset: PS3: Readding +2 after fixing typo. -- To view, visit https://gerrit.osmocom.org/c/docker-playground/+/27214 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: docker-playground Gerrit-Branch: master Gerrit-Change-Id: I6cd8a61ca52c7beda98b357f82ce42eba54e196b Gerrit-Change-Number: 27214 Gerrit-PatchSet: 3 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-Comment-Date: Wed, 16 Feb 2022 17:42:24 +0000 Gerrit-HasComments: Yes Gerrit-Has-Labels: No Gerrit-MessageType: comment

3 years, 4 months

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Change in docker-playground[master]: debian-bullseye-erlang: Build rebar3 from source

by pespin

pespin has posted comments on this change. ( https://gerrit.osmocom.org/c/docker-playground/+/27214 ) Change subject: debian-bullseye-erlang: Build rebar3 from source ...................................................................... Patch Set 3: Code-Review+2 -- To view, visit https://gerrit.osmocom.org/c/docker-playground/+/27214 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: docker-playground Gerrit-Branch: master Gerrit-Change-Id: I6cd8a61ca52c7beda98b357f82ce42eba54e196b Gerrit-Change-Number: 27214 Gerrit-PatchSet: 3 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-Comment-Date: Wed, 16 Feb 2022 17:42:10 +0000 Gerrit-HasComments: No Gerrit-Has-Labels: Yes Gerrit-MessageType: comment

3 years, 4 months

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Change in docker-playground[master]: debian-bullseye-erlang: Build rebar3 from source

by pespin

Attention is currently required from: pespin. Hello Jenkins Builder, laforge, fixeria, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/c/docker-playground/+/27214 to look at the new patch set (#3). Change subject: debian-bullseye-erlang: Build rebar3 from source ...................................................................... debian-bullseye-erlang: Build rebar3 from source This way we ensure it is always built against the same erlang OTP installed in the system. Change-Id: I6cd8a61ca52c7beda98b357f82ce42eba54e196b --- M debian-bullseye-erlang/Dockerfile 1 file changed, 6 insertions(+), 2 deletions(-) git pull ssh://gerrit.osmocom.org:29418/docker-playground refs/changes/14/27214/3 -- To view, visit https://gerrit.osmocom.org/c/docker-playground/+/27214 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: docker-playground Gerrit-Branch: master Gerrit-Change-Id: I6cd8a61ca52c7beda98b357f82ce42eba54e196b Gerrit-Change-Number: 27214 Gerrit-PatchSet: 3 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Attention: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: newpatchset

3 years, 4 months

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Change in libosmocore[master]: gsm: [ABI BREAK] Support CellId SAI, change CellId CGI-PS id number

by pespin

pespin has submitted this change. ( https://gerrit.osmocom.org/c/libosmocore/+/27224 ) Change subject: gsm: [ABI BREAK] Support CellId SAI, change CellId CGI-PS id number ...................................................................... gsm: [ABI BREAK] Support CellId SAI, change CellId CGI-PS id number Those are available in 3GPP TS 48.008 version 16.0.0 Release 16, section 3.2.2.17 Cell Identifier. It can be seen that we have a collision between the osmocom non-standard format and the SAI standard one. This is because CGI-PS is not really a TS 48.008 Cell Identifier, but only specified in TS 48.018 and has no ID number assigned. The CGI-PS was added there because the whole osmo-bsc neighbour configuration works with CellIds to manage neighbours, so it felt natural to extend the APIs to also provide means to use CGI-PS format (TS 48.018 even refers 48.008 existance and mentions there's no explicit ID). At the time this Cell Identifier was added, the firstly available number (11) was taken, which was of course a really bad idea since newer versions of the spec can at some point use it, which is the case if one checks for instance TS 48.008 Release 16 SAI Cell Id. There no perfect way to fix this bad decision at the time, but the CGI-PS is only used in osmo-bsc and only for RIM related purposes, so by changing the ID of CELL_IDENT_WHOLE_GLOBAL_PS, we only break RIM under some specific CIs being used, and when an osmo-bsc is built against older libosmocore and then used at runtime against a newer libosmocore (which should be rare). Hence, the downside is acceptable, and by moving the new ID number to be ouside of the spec proto TS 48.008 range (4 bits), we make sure we don't have the same problem again in the future. Related: SYS#5838 Fixes: ca33a71ca8eeaee98b1b53d5394b147a4ff0b429 Change-Id: Id25e563febdb7640174540136225f399515a0089 --- M TODO-RELEASE M include/osmocom/gsm/gsm0808_utils.h M include/osmocom/gsm/gsm23003.h M include/osmocom/gsm/protocol/gsm_08_08.h M src/gsm/gsm0808_utils.c M src/gsm/gsm23003.c M tests/gsm0808/gsm0808_test.c 7 files changed, 127 insertions(+), 4 deletions(-) Approvals: Jenkins Builder: Verified laforge: Looks good to me, approved diff --git a/TODO-RELEASE b/TODO-RELEASE index 8ccfa49..3855145 100644 --- a/TODO-RELEASE +++ b/TODO-RELEASE @@ -7,3 +7,4 @@ # If any interfaces have been added since the last public release: c:r:a + 1. # If any interfaces have been removed or changed since the last public release: c:r:0. #library what description / commit summary line +libosmogsm ABI BREAKAGE CELL_IDENT_WHOLE_GLOBAL_PS changed enum number diff --git a/include/osmocom/gsm/gsm0808_utils.h b/include/osmocom/gsm/gsm0808_utils.h index 60e665b..6abfeec 100644 --- a/include/osmocom/gsm/gsm0808_utils.h +++ b/include/osmocom/gsm/gsm0808_utils.h @@ -44,6 +44,8 @@ uint16_t ci; struct osmo_location_area_id lai_and_lac; uint16_t lac; + struct osmo_service_area_id sai; + /* osmocom specific: */ struct osmo_cell_global_id_ps global_ps; }; diff --git a/include/osmocom/gsm/gsm23003.h b/include/osmocom/gsm/gsm23003.h index 487379a..4070581 100644 --- a/include/osmocom/gsm/gsm23003.h +++ b/include/osmocom/gsm/gsm23003.h @@ -30,6 +30,9 @@ uint16_t cell_identity; }; +/* 3GPP TS 48.018: + * 8c.1.4.1.1 GERAN BSS identification (RIM) + * sec 11.3.9 Cell Identifier */ struct osmo_cell_global_id_ps { struct osmo_routing_area_id rai; uint16_t cell_identity; @@ -134,6 +137,10 @@ const char *osmo_cgi_ps_name2(const struct osmo_cell_global_id_ps *cgi_ps); char *osmo_cgi_ps_name_buf(char *buf, size_t buf_len, const struct osmo_cell_global_id_ps *cgi_ps); char *osmo_cgi_ps_name_c(const void *ctx, const struct osmo_cell_global_id_ps *cgi_ps); +const char *osmo_sai_name(const struct osmo_service_area_id *sai); +const char *osmo_sai_name2(const struct osmo_service_area_id *sai); +char *osmo_sai_name_buf(char *buf, size_t buf_len, const struct osmo_service_area_id *sai); +char *osmo_sai_name_c(const void *ctx, const struct osmo_service_area_id *sai); const char *osmo_gummei_name(const struct osmo_gummei *gummei); char *osmo_gummei_name_buf(char *buf, size_t buf_len, const struct osmo_gummei *gummei); char *osmo_gummei_name_c(const void *ctx, const struct osmo_gummei *gummei); diff --git a/include/osmocom/gsm/protocol/gsm_08_08.h b/include/osmocom/gsm/protocol/gsm_08_08.h index 983783e..2162c2a 100644 --- a/include/osmocom/gsm/protocol/gsm_08_08.h +++ b/include/osmocom/gsm/protocol/gsm_08_08.h @@ -25,9 +25,10 @@ CELL_IDENT_UTRAN_PLMN_LAC_RNC = 8, CELL_IDENT_UTRAN_RNC = 9, CELL_IDENT_UTRAN_LAC_RNC = 10, + CELL_IDENT_SAI = 11, - /* Not in 03.03 nor 08.08 */ - CELL_IDENT_WHOLE_GLOBAL_PS = 11, /* CGI with + RAC */ + /* Not in 03.03 nor 08.08. Place them > 0x0f (discr_id is 4 bits) */ + CELL_IDENT_WHOLE_GLOBAL_PS = 128, /* CGI + RAC, TS 48.018 8c.1.4.1.1 */ }; /* Keep this misnamed CELL_IDENT for API backwards compatibility (see OS#3124). */ #define CELL_IDENT_LAI_AND_LAC CELL_IDENT_LAI diff --git a/src/gsm/gsm0808_utils.c b/src/gsm/gsm0808_utils.c index 78cbe92..040872b 100644 --- a/src/gsm/gsm0808_utils.c +++ b/src/gsm/gsm0808_utils.c @@ -831,6 +831,10 @@ dst->lai.lac = u->lac; return; + case CELL_IDENT_SAI: + dst->lai = u->sai.lai; + return; + case CELL_IDENT_NO_CELL: case CELL_IDENT_BSS: case CELL_IDENT_UTRAN_PLMN_LAC_RNC: @@ -858,6 +862,8 @@ case CELL_IDENT_BSS: case CELL_IDENT_NO_CELL: return 0; + case CELL_IDENT_SAI: + return 7; case CELL_IDENT_WHOLE_GLOBAL_PS: return 8; default: @@ -904,6 +910,12 @@ case CELL_IDENT_NO_CELL: /* Does not have any list items */ break; + case CELL_IDENT_SAI: + if (len < 7) + return -EINVAL; + decode_lai(buf, &out->sai.lai); + out->sai.sac = osmo_load16be(buf + sizeof(struct gsm48_loc_area_id)); + break; case CELL_IDENT_WHOLE_GLOBAL_PS: /* 3GPP TS 48.018 sec 11.3.9 "Cell Identifier" */ if (len < 8) @@ -953,6 +965,16 @@ case CELL_IDENT_NO_CELL: /* Does not have any list items */ break; + + case CELL_IDENT_SAI: { + const struct osmo_service_area_id *id = &u->sai; + struct gsm48_loc_area_id lai; + gsm48_generate_lai2(&lai, &id->lai); + memcpy(msgb_put(msg, sizeof(lai)), &lai, sizeof(lai)); + msgb_put_u16(msg, id->sac); + break; + } + case CELL_IDENT_WHOLE_GLOBAL_PS: { /* 3GPP TS 48.018 sec 11.3.9 "Cell Identifier" */ const struct osmo_cell_global_id_ps *id = &u->global_ps; @@ -1166,6 +1188,31 @@ return i; } +static int parse_cell_id_sai_list(struct gsm0808_cell_id_list2 *cil, const uint8_t *data, size_t remain, size_t *consumed) +{ + struct osmo_service_area_id *id; + uint16_t *sac_be; + size_t lai_offset; + int i = 0; + const size_t elemlen = sizeof(struct gsm48_loc_area_id) + sizeof(*sac_be); + + *consumed = 0; + while (remain >= elemlen) { + if (i >= GSM0808_CELL_ID_LIST2_MAXLEN) + return -ENOSPC; + id = &cil->id_list[i].sai; + lai_offset = i * elemlen; + decode_lai(&data[lai_offset], &id->lai); + sac_be = (uint16_t *)(&data[lai_offset + sizeof(struct gsm48_loc_area_id)]); + id->sac = osmo_load16be(sac_be); + *consumed += elemlen; + remain -= elemlen; + i++; + } + + return i; +} + /*! Decode Cell Identifier List IE * \param[out] cil Caller-provided memory to store Cell ID list * \param[in] elem IE value to be decoded @@ -1210,6 +1257,12 @@ case CELL_IDENT_NO_CELL: /* Does not have any list items */ break; + case CELL_IDENT_SAI: + list_len = parse_cell_id_sai_list(cil, elem, len, &bytes_elem); + break; + case CELL_IDENT_UTRAN_PLMN_LAC_RNC: + case CELL_IDENT_UTRAN_RNC: + case CELL_IDENT_UTRAN_LAC_RNC: default: /* Remaining cell identification types are not implemented. */ return -EINVAL; @@ -1703,6 +1756,8 @@ return snprintf(buf, buflen, "%s", osmo_cgi_name(&u->global)); case CELL_IDENT_WHOLE_GLOBAL_PS: return snprintf(buf, buflen, "%s", osmo_cgi_ps_name(&u->global_ps)); + case CELL_IDENT_SAI: + return snprintf(buf, buflen, "%s", osmo_sai_name(&u->sai)); default: /* For CELL_IDENT_BSS and CELL_IDENT_NO_CELL, just print the discriminator. * Same for kinds we have no string representation of yet. */ @@ -1859,6 +1914,12 @@ cid->id.lac = cgi->lai.lac; return; + case CELL_IDENT_SAI: + cid->id.sai = (struct osmo_service_area_id){ + .lai = cgi->lai, + }; + return; + case CELL_IDENT_NO_CELL: case CELL_IDENT_BSS: case CELL_IDENT_UTRAN_PLMN_LAC_RNC: @@ -1905,6 +1966,10 @@ cgi->lai.lac = cid->id.lac; return OSMO_CGI_PART_LAC; + case CELL_IDENT_SAI: + cgi->lai = cid->id.sai.lai; + return OSMO_CGI_PART_PLMN | OSMO_CGI_PART_LAC; + case CELL_IDENT_NO_CELL: case CELL_IDENT_BSS: case CELL_IDENT_UTRAN_PLMN_LAC_RNC: @@ -1927,6 +1992,7 @@ { CELL_IDENT_UTRAN_PLMN_LAC_RNC, "UTRAN-PLMN-LAC-RNC" }, { CELL_IDENT_UTRAN_RNC, "UTRAN-RNC" }, { CELL_IDENT_UTRAN_LAC_RNC, "UTRAN-LAC-RNC" }, + { CELL_IDENT_SAI, "SAI" }, { CELL_IDENT_WHOLE_GLOBAL_PS, "CGI-PS"}, { 0, NULL } }; diff --git a/src/gsm/gsm23003.c b/src/gsm/gsm23003.c index b893873..1eed41f 100644 --- a/src/gsm/gsm23003.c +++ b/src/gsm/gsm23003.c @@ -368,6 +368,51 @@ return osmo_cgi_ps_name_buf(buf, 32, cgi_ps); } +/*! Return MCC-MNC-LAC-SAC as string, in caller-provided output buffer. + * \param[out] buf caller-allocated output buffer + * \param[in] buf_len size of buf in bytes + * \param[in] sai SAI to encode. + * \returns buf + */ +char *osmo_sai_name_buf(char *buf, size_t buf_len, const struct osmo_service_area_id *sai) +{ + snprintf(buf, buf_len, "%s-%u", osmo_lai_name(&sai->lai), sai->sac); + return buf; +} + +/*! Return MCC-MNC-LAC-SAC as string, in a static buffer. + * \param[in] sai SAI to encode. + * \returns Static string buffer. + */ +const char *osmo_sai_name(const struct osmo_service_area_id *sai) +{ + static __thread char buf[32]; + return osmo_sai_name_buf(buf, sizeof(buf), sai); +} + +/*! Same as osmo_cgi_name(), but uses a different static buffer. + * Useful for printing two distinct CGIs in the same printf format. + * \param[in] sai SAI to encode. + * \returns Static string buffer. + */ +const char *osmo_sai_name2(const struct osmo_service_area_id *sai) +{ + static __thread char buf[32]; + return osmo_sai_name_buf(buf, sizeof(buf), sai); +} + +/*! Return MCC-MNC-LAC-SAC as string, in a talloc-allocated output buffer. + * \param[in] ctx talloc context from which to allocate output buffer + * \param[in] sai SAI to encode. + * \returns string representation of CGI in dynamically-allocated buffer. + */ +char *osmo_sai_name_c(const void *ctx, const struct osmo_service_area_id *sai) +{ + char *buf = talloc_size(ctx, 32); + return osmo_sai_name_buf(buf, 32, sai); +} + + static void to_bcd(uint8_t *bcd, uint16_t val) { bcd[2] = val % 10; diff --git a/tests/gsm0808/gsm0808_test.c b/tests/gsm0808/gsm0808_test.c index d0560d5..b823a15 100644 --- a/tests/gsm0808/gsm0808_test.c +++ b/tests/gsm0808/gsm0808_test.c @@ -1080,8 +1080,9 @@ int rc; rc = gsm0808_dec_cell_id_list2(&dec_cil, enc_cil, sizeof(enc_cil)); - /* Not yet supported: */ - OSMO_ASSERT(rc == -EINVAL); + OSMO_ASSERT(rc == sizeof(enc_cil)); + OSMO_ASSERT(dec_cil.id_discr = CELL_IDENT_SAI); + OSMO_ASSERT(dec_cil.id_list_len = 1); } static void test_gsm0808_enc_dec_cell_id_list_lac() -- To view, visit https://gerrit.osmocom.org/c/libosmocore/+/27224 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmocore Gerrit-Branch: master Gerrit-Change-Id: Id25e563febdb7640174540136225f399515a0089 Gerrit-Change-Number: 27224 Gerrit-PatchSet: 3 Gerrit-Owner: pespin <pespin(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: merged

3 years, 4 months

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Change in libosmocore[master]: gsm0808: Test if we properly decode a SRVCC cell identifier list

by pespin

pespin has submitted this change. ( https://gerrit.osmocom.org/c/libosmocore/+/27212 ) Change subject: gsm0808: Test if we properly decode a SRVCC cell identifier list ...................................................................... gsm0808: Test if we properly decode a SRVCC cell identifier list We don't handle this correctly, as we decided to overload the meaning of 0b1011 in a cell identifier list (defined by 3GPP as used in SRVCC) with something osmocom proprietary. Change-Id: I608220e8e5dd5a44f85c6bc5ea04622a2cad24ec --- M tests/gsm0808/gsm0808_test.c 1 file changed, 13 insertions(+), 0 deletions(-) Approvals: Jenkins Builder: Verified fixeria: Looks good to me, but someone else must approve laforge: Looks good to me, approved diff --git a/tests/gsm0808/gsm0808_test.c b/tests/gsm0808/gsm0808_test.c index 3fff005..d0560d5 100644 --- a/tests/gsm0808/gsm0808_test.c +++ b/tests/gsm0808/gsm0808_test.c @@ -1072,6 +1072,18 @@ msgb_free(msg); } +static void test_gsm0808_dec_cell_id_list_srvcc() +{ + /* taken from a pcap file of a real-world 3rd party MSC (SYS#5838) */ + const uint8_t enc_cil[] = { 0x0b, 0x2, 0xf2, 0x10, 0x4e, 0x20, 0x15, 0xbe}; + struct gsm0808_cell_id_list2 dec_cil; + int rc; + + rc = gsm0808_dec_cell_id_list2(&dec_cil, enc_cil, sizeof(enc_cil)); + /* Not yet supported: */ + OSMO_ASSERT(rc == -EINVAL); +} + static void test_gsm0808_enc_dec_cell_id_list_lac() { struct gsm0808_cell_id_list2 enc_cil; @@ -2490,6 +2502,7 @@ test_gsm0808_enc_dec_cell_id_list_multi_ci(); test_gsm0808_enc_dec_cell_id_list_multi_lac_and_ci(); test_gsm0808_enc_dec_cell_id_list_multi_global(); + test_gsm0808_dec_cell_id_list_srvcc(); test_cell_id_list_add(); -- To view, visit https://gerrit.osmocom.org/c/libosmocore/+/27212 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmocore Gerrit-Branch: master Gerrit-Change-Id: I608220e8e5dd5a44f85c6bc5ea04622a2cad24ec Gerrit-Change-Number: 27212 Gerrit-PatchSet: 2 Gerrit-Owner: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: merged

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gerrit-log February 2022