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[M] Change in libosmo-pfcp[master]: Port pfcp socket to osmo_iofd
by pespin 04 Feb '25

04 Feb '25

Attention is currently required from: laforge, neels, pespin. Hello Jenkins Builder, fixeria, laforge, neels, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/c/libosmo-pfcp/+/39459?usp=email to look at the new patch set (#2). The following approvals got outdated and were removed: Verified+1 by Jenkins Builder Change subject: Port pfcp socket to osmo_iofd ...................................................................... Port pfcp socket to osmo_iofd As a indirect consequence, the pfcp socket now earns a Tx queue, which should avoid sporadic tx msg drops during high load. Related: OS#6714 Change-Id: If85888b6857899e0aca1fdd1d806c53476b4d239 --- M src/libosmo-pfcp/pfcp_endpoint.c 1 file changed, 82 insertions(+), 65 deletions(-) git pull ssh://gerrit.osmocom.org:29418/libosmo-pfcp refs/changes/59/39459/2 -- To view, visit https://gerrit.osmocom.org/c/libosmo-pfcp/+/39459?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newpatchset Gerrit-Project: libosmo-pfcp Gerrit-Branch: master Gerrit-Change-Id: If85888b6857899e0aca1fdd1d806c53476b4d239 Gerrit-Change-Number: 39459 Gerrit-PatchSet: 2 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: neels <nhofmeyr(a)sysmocom.de> Gerrit-Attention: neels <nhofmeyr(a)sysmocom.de> Gerrit-Attention: laforge <laforge(a)osmocom.org> Gerrit-Attention: pespin <pespin(a)sysmocom.de>

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[M] Change in ...osmo-s1gw[master]: s1ap_proxy: handle UE CONTEXT RELEASE PDUs
by laforge 04 Feb '25

04 Feb '25

Attention is currently required from: fixeria. laforge has posted comments on this change by fixeria. ( https://gerrit.osmocom.org/c/erlang/osmo-s1gw/+/39463?usp=email ) Change subject: s1ap_proxy: handle UE CONTEXT RELEASE PDUs ...................................................................... Patch Set 1: Code-Review+1 -- To view, visit https://gerrit.osmocom.org/c/erlang/osmo-s1gw/+/39463?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: comment Gerrit-Project: erlang/osmo-s1gw Gerrit-Branch: master Gerrit-Change-Id: Ic94489e3d3052221b49431da3a95e5c1eb0e0ba0 Gerrit-Change-Number: 39463 Gerrit-PatchSet: 1 Gerrit-Owner: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Attention: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Comment-Date: Tue, 04 Feb 2025 08:05:28 +0000 Gerrit-HasComments: No Gerrit-Has-Labels: Yes

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[M] Change in libosmo-pfcp[master]: Port pfcp socket to osmo_iofd
by fixeria 04 Feb '25

04 Feb '25

Attention is currently required from: laforge, neels, pespin. fixeria has posted comments on this change by pespin. ( https://gerrit.osmocom.org/c/libosmo-pfcp/+/39459?usp=email ) Change subject: Port pfcp socket to osmo_iofd ...................................................................... Patch Set 1: (2 comments) File src/libosmo-pfcp/pfcp_endpoint.c: https://gerrit.osmocom.org/c/libosmo-pfcp/+/39459/comment/a78dbc8c_1b1f9f9c… : PS1, Line 492: struct osmo_io_ops ioops `static const`? https://gerrit.osmocom.org/c/libosmo-pfcp/+/39459/comment/58ad4605_53d71fa4… : PS1, Line 517: if (rc < 0) You're checking `rc < 0` twice now, is this second check still needed? -- To view, visit https://gerrit.osmocom.org/c/libosmo-pfcp/+/39459?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: comment Gerrit-Project: libosmo-pfcp Gerrit-Branch: master Gerrit-Change-Id: If85888b6857899e0aca1fdd1d806c53476b4d239 Gerrit-Change-Number: 39459 Gerrit-PatchSet: 1 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: neels <nhofmeyr(a)sysmocom.de> Gerrit-Attention: neels <nhofmeyr(a)sysmocom.de> Gerrit-Attention: laforge <laforge(a)osmocom.org> Gerrit-Attention: pespin <pespin(a)sysmocom.de> Gerrit-Comment-Date: Tue, 04 Feb 2025 07:47:44 +0000 Gerrit-HasComments: Yes Gerrit-Has-Labels: No

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[M] Change in ...osmo-s1gw[master]: s1ap_proxy: handle UE CONTEXT RELEASE PDUs
by fixeria 03 Feb '25

03 Feb '25

fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/erlang/osmo-s1gw/+/39463?usp=email ) Change subject: s1ap_proxy: handle UE CONTEXT RELEASE PDUs ...................................................................... s1ap_proxy: handle UE CONTEXT RELEASE PDUs On receipt of UE CONTEXT RELEASE PDUs, signal the release of all affected E-RAB FSMs with the matching {MME,eNB}-UE-S1AP-ID. Change-Id: Ic94489e3d3052221b49431da3a95e5c1eb0e0ba0 Related: osmo-ttcn3-hacks.git I065692f311e9d03630ab3ca2f6a03465418f0e71 Related: SYS#7310 --- M include/s1gw_metrics.hrl M src/s1ap_proxy.erl M src/s1gw_metrics.erl M test/s1ap_proxy_test.erl 4 files changed, 149 insertions(+), 1 deletion(-) git pull ssh://gerrit.osmocom.org:29418/erlang/osmo-s1gw refs/changes/63/39463/1 diff --git a/include/s1gw_metrics.hrl b/include/s1gw_metrics.hrl index 77d6a8e..268b2e9 100644 --- a/include/s1gw_metrics.hrl +++ b/include/s1gw_metrics.hrl @@ -24,6 +24,9 @@ -define(S1GW_CTR_S1AP_PROXY_IN_PKT_ERAB_MOD_IND, [ctr, s1ap, proxy, in_pkt, erab_mod_ind]). -define(S1GW_CTR_S1AP_PROXY_IN_PKT_INIT_CTX_REQ, [ctr, s1ap, proxy, in_pkt, init_ctx_req]). -define(S1GW_CTR_S1AP_PROXY_IN_PKT_INIT_CTX_RSP, [ctr, s1ap, proxy, in_pkt, init_ctx_rsp]). +-define(S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_REQ, [ctr, s1ap, proxy, in_pkt, release_ctx_req]). +-define(S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_CMD, [ctr, s1ap, proxy, in_pkt, release_ctx_cmd]). +-define(S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_COMPL, [ctr, s1ap, proxy, in_pkt, release_ctx_cnf]). -define(S1GW_CTR_S1AP_PROXY_OUT_PKT_FWD_ALL, [ctr, s1ap, proxy, out_pkt, forward, all]). -define(S1GW_CTR_S1AP_PROXY_OUT_PKT_FWD_PROC, [ctr, s1ap, proxy, out_pkt, forward, proc]). -define(S1GW_CTR_S1AP_PROXY_OUT_PKT_FWD_UNMODIFIED, [ctr, s1ap, proxy, out_pkt, forward, unmodified]). diff --git a/src/s1ap_proxy.erl b/src/s1ap_proxy.erl index f04fb61..56e5dee 100644 --- a/src/s1ap_proxy.erl +++ b/src/s1ap_proxy.erl @@ -172,6 +172,28 @@ {MmeUeId, EnbUeId, ERABId}. +-spec erab_for_each(UID, Fun, ERABs) -> ok + when UID :: {mme_ue_id(), enb_ue_id()} | {mme_ue_id()}, + Fun :: fun((pid()) -> term()), + ERABs :: [{erab_uid(), pid()}]. +erab_for_each({MMEUEId, ENBUEId} = UID, Fun, + [{{MMEUEId, ENBUEId, _}, Pid} | ERABs]) -> + Fun(Pid), %% matched by a pair of {MME,eNB}-UE-S1AP-ID + erab_for_each(UID, Fun, ERABs); + +erab_for_each({MMEUEId} = UID, Fun, + [{{MMEUEId, _, _}, Pid} | ERABs]) -> + Fun(Pid), %% matched by an MME-UE-S1AP-ID + erab_for_each(UID, Fun, ERABs); + +erab_for_each(UID, Fun, + [_ERAB | ERABs]) -> + erab_for_each(UID, Fun, ERABs); + +erab_for_each(_UID, _Fun, []) -> + ok. + + %% Encode an S1AP PDU -spec encode_pdu(s1ap_pdu()) -> {ok, binary()} | {error, {asn1, tuple()}}. @@ -377,6 +399,66 @@ {forward, S1} %% XXX: forward as-is or drop? end; +%% 9.1.4.5 UE CONTEXT RELEASE REQUEST +handle_pdu({initiatingMessage, + #'InitiatingMessage'{procedureCode = ?'id-UEContextReleaseRequest', + value = #'UEContextReleaseRequest'{protocolIEs = IEs}}}, + #proxy_state{erabs = ERABs} = S) -> + ?LOG_DEBUG("Processing UE CONTEXT RELEASE REQUEST"), + s1gw_metrics:ctr_inc(?S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_REQ), + %% fetch {MME,eNB}-UE-S1AP-ID values (mandatory IEs) + #'ProtocolIE-Field'{id = ?'id-MME-UE-S1AP-ID', + value = MMEUEId} = lists:nth(1, IEs), + #'ProtocolIE-Field'{id = ?'id-eNB-UE-S1AP-ID', + value = ENBUEId} = lists:nth(2, IEs), + %% poke E-RAB FSMs with the matching {MME,eNB}-UE-S1AP-ID + erab_for_each({MMEUEId, ENBUEId}, + fun erab_fsm:erab_release_ind/1, + dict:to_list(ERABs)), + {forward, S}; %% forward as-is, there's nothing to patch + +%% 9.1.4.6 UE CONTEXT RELEASE COMMAND +handle_pdu({initiatingMessage, + #'InitiatingMessage'{procedureCode = ?'id-UEContextRelease', + value = #'UEContextReleaseCommand'{protocolIEs = IEs}}}, + #proxy_state{erabs = ERABs} = S) -> + ?LOG_DEBUG("Processing UE CONTEXT RELEASE COMMAND"), + s1gw_metrics:ctr_inc(?S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_CMD), + #'ProtocolIE-Field'{id = ?'id-UE-S1AP-IDs', + value = S1APIDs} = lists:nth(1, IEs), + case S1APIDs of + {'uE-S1AP-ID-pair', #'UE-S1AP-ID-pair'{'mME-UE-S1AP-ID' = MMEUEId, + 'eNB-UE-S1AP-ID' = ENBUEId}} -> + %% poke E-RAB FSMs with the matching {MME,eNB}-UE-S1AP-ID + erab_for_each({MMEUEId, ENBUEId}, + fun erab_fsm:erab_release_cmd/1, + dict:to_list(ERABs)); + {'mME-UE-S1AP-ID', MMEUEId} -> + %% poke E-RAB FSMs with the matching MME-UE-S1AP-ID + erab_for_each({MMEUEId}, + fun erab_fsm:erab_release_cmd/1, + dict:to_list(ERABs)) + end, + {forward, S}; %% forward as-is, there's nothing to patch + +%% 9.1.4.7 UE CONTEXT RELEASE COMPLETE +handle_pdu({successfulOutcome, + #'SuccessfulOutcome'{procedureCode = ?'id-UEContextRelease', + value = #'UEContextReleaseComplete'{protocolIEs = IEs}}}, + #proxy_state{erabs = ERABs} = S) -> + ?LOG_DEBUG("Processing UE CONTEXT RELEASE COMPLETE"), + s1gw_metrics:ctr_inc(?S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_COMPL), + %% fetch {MME,eNB}-UE-S1AP-ID values (mandatory IEs) + #'ProtocolIE-Field'{id = ?'id-MME-UE-S1AP-ID', + value = MMEUEId} = lists:nth(1, IEs), + #'ProtocolIE-Field'{id = ?'id-eNB-UE-S1AP-ID', + value = ENBUEId} = lists:nth(2, IEs), + %% poke E-RAB FSMs with the matching {MME,eNB}-UE-S1AP-ID + erab_for_each({MMEUEId, ENBUEId}, + fun erab_fsm:erab_release_rsp/1, + dict:to_list(ERABs)), + {forward, S}; %% forward as-is, there's nothing to patch + %% TODO: 9.1.5.2 HANDOVER COMMAND :: (O) UL/DL Transport Layer Address %% TODO: 9.1.5.4 HANDOVER REQUEST :: (M) Transport Layer Address %% TODO: 9.1.5.5 HANDOVER REQUEST ACKNOWLEDGE :: (M) Transport Layer Address, diff --git a/src/s1gw_metrics.erl b/src/s1gw_metrics.erl index 55421e7..50cab10 100644 --- a/src/s1gw_metrics.erl +++ b/src/s1gw_metrics.erl @@ -75,6 +75,9 @@ ?S1GW_CTR_S1AP_PROXY_IN_PKT_ERAB_MOD_IND, %% E-RAB MODIFY.ind PDUs ?S1GW_CTR_S1AP_PROXY_IN_PKT_INIT_CTX_REQ, %% INITIAL CONTEXT SETUP.req PDUs ?S1GW_CTR_S1AP_PROXY_IN_PKT_INIT_CTX_RSP, %% INITIAL CONTEXT SETUP.rsp PDUs + ?S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_REQ, %% UE CONTEXT RELEASE.req PDUs + ?S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_CMD, %% UE CONTEXT RELEASE.cmd PDUs + ?S1GW_CTR_S1AP_PROXY_IN_PKT_RELEASE_CTX_COMPL, %% UE CONTEXT RELEASE.compl PDUs %% s1ap_proxy: OUTgoing PDU counters ?S1GW_CTR_S1AP_PROXY_OUT_PKT_FWD_ALL, %% forwarded: total ?S1GW_CTR_S1AP_PROXY_OUT_PKT_FWD_PROC, %% forwarded: processed diff --git a/test/s1ap_proxy_test.erl b/test/s1ap_proxy_test.erl index 917b63e..ce9032e 100644 --- a/test/s1ap_proxy_test.erl +++ b/test/s1ap_proxy_test.erl @@ -45,7 +45,11 @@ {"E-RAB MODIFICATION INDICATION", ?TC(fun test_e_rab_modify_ind/1)}, {"INITIAL CONTEXT SETUP REQUEST/RESPONSE", - ?TC(fun test_initial_context_setup/1)}]. + ?TC(fun test_initial_context_setup/1)}, + {"UE CONTEXT RELEASE REQUEST", + ?TC(fun test_ue_ctx_release_req/1)}, + {"UE CONTEXT RELEASE COMMAND/COMPLETE", + ?TC(fun test_ue_ctx_release_cmd/1)}]. %% ------------------------------------------------------------------ @@ -139,6 +143,37 @@ ?_assertMatch([_], s1ap_proxy:fetch_erab_list(Pid))]. +test_ue_ctx_release_req(#{handler := Pid}) -> + %% [eNB <- MME] INITIAL CONTEXT SETUP REQUEST + InitCtxSetupReq = initial_context_setup_req_pdu(?ADDR_U2C, ?TEID_U2C), + %% [eNB -> MME] INITIAL CONTEXT SETUP RESPONSE + InitCtxSetupRsp = initial_context_setup_rsp_pdu(?ADDR_U2A, ?TEID_U2A), + %% [eNB -> MME] UE CONTEXT RELEASE REQUEST + UeCtxReleaseReq = ue_ctx_release_req_pdu(), + + [?_assertMatch({forward, _}, s1ap_proxy:process_pdu(Pid, InitCtxSetupReq)), + ?_assertMatch({forward, _}, s1ap_proxy:process_pdu(Pid, InitCtxSetupRsp)), + ?_assertEqual({forward, UeCtxReleaseReq}, s1ap_proxy:process_pdu(Pid, UeCtxReleaseReq)), + ?_assertMatch([], s1ap_proxy:fetch_erab_list(Pid))]. + + +test_ue_ctx_release_cmd(#{handler := Pid}) -> + %% [eNB <- MME] INITIAL CONTEXT SETUP REQUEST + InitCtxSetupReq = initial_context_setup_req_pdu(?ADDR_U2C, ?TEID_U2C), + %% [eNB -> MME] INITIAL CONTEXT SETUP RESPONSE + InitCtxSetupRsp = initial_context_setup_rsp_pdu(?ADDR_U2A, ?TEID_U2A), + %% [eNB <- MME] UE CONTEXT RELEASE COMMAND + UeCtxReleaseCmd = ue_ctx_release_cmd_pdu(), + %% [eNB -> MME] UE CONTEXT RELEASE COMPLETE + UeCtxReleaseCompl = ue_ctx_release_compl_pdu(), + + [?_assertMatch({forward, _}, s1ap_proxy:process_pdu(Pid, InitCtxSetupReq)), + ?_assertMatch({forward, _}, s1ap_proxy:process_pdu(Pid, InitCtxSetupRsp)), + ?_assertEqual({forward, UeCtxReleaseCmd}, s1ap_proxy:process_pdu(Pid, UeCtxReleaseCmd)), + ?_assertEqual({forward, UeCtxReleaseCompl}, s1ap_proxy:process_pdu(Pid, UeCtxReleaseCompl)), + ?_assertMatch([], s1ap_proxy:fetch_erab_list(Pid))]. + + %% ------------------------------------------------------------------ %% S1AP PDU templates %% ------------------------------------------------------------------ @@ -298,4 +333,29 @@ TEID:32/big %% GTP-TEID >>. + +%% [eNB -> MME] UE CONTEXT RELEASE REQUEST +ue_ctx_release_req_pdu() -> + << 16#00, 16#12, 16#40, 16#14, 16#00, 16#00, 16#03, 16#00, + 16#00, 16#00, 16#02, 16#00, 16#01, 16#00, 16#08, 16#00, + 16#02, 16#00, 16#01, 16#00, 16#02, 16#40, 16#01, 16#20 + >>. + + +%% [eNB <- MME] UE CONTEXT RELEASE COMMAND +ue_ctx_release_cmd_pdu() -> + << 16#00, 16#17, 16#00, 16#10, 16#00, 16#00, 16#02, 16#00, + 16#63, 16#00, 16#04, 16#00, 16#01, 16#00, 16#01, 16#00, + 16#02, 16#40, 16#01, 16#20 + >>. + + +%% [eNB -> MME] UE CONTEXT RELEASE COMPLETE +ue_ctx_release_compl_pdu() -> + << 16#20, 16#17, 16#00, 16#0f, 16#00, 16#00, 16#02, 16#00, + 16#00, 16#40, 16#02, 16#00, 16#01, 16#00, 16#08, 16#40, + 16#02, 16#00, 16#01 + >>. + + %% vim:set ts=4 sw=4 et: -- To view, visit https://gerrit.osmocom.org/c/erlang/osmo-s1gw/+/39463?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: erlang/osmo-s1gw Gerrit-Branch: master Gerrit-Change-Id: Ic94489e3d3052221b49431da3a95e5c1eb0e0ba0 Gerrit-Change-Number: 39463 Gerrit-PatchSet: 1 Gerrit-Owner: fixeria <vyanitskiy(a)sysmocom.de>

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[M] Change in osmo-ttcn3-hacks[master]: s1gw: add TCs for UE CONTEXT RELEASE procedures
by fixeria 03 Feb '25

03 Feb '25

fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39462?usp=email ) Change subject: s1gw: add TCs for UE CONTEXT RELEASE procedures ...................................................................... s1gw: add TCs for UE CONTEXT RELEASE procedures Change-Id: I065692f311e9d03630ab3ca2f6a03465418f0e71 Related: SYS#7310 --- M s1gw/S1GW_ConnHdlr.ttcn M s1gw/S1GW_Tests.ttcn M s1gw/expected-results.xml 3 files changed, 94 insertions(+), 1 deletion(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/62/39462/1 diff --git a/s1gw/S1GW_ConnHdlr.ttcn b/s1gw/S1GW_ConnHdlr.ttcn index b2b207d..e84c3ab 100644 --- a/s1gw/S1GW_ConnHdlr.ttcn +++ b/s1gw/S1GW_ConnHdlr.ttcn @@ -859,4 +859,47 @@ f_ConnHdlr_rx_initial_ctx_setup_rsp(erabs); } +function f_ConnHdlr_ue_ctx_release_req(S1AP_IEs.Cause cause := c_REL_CMD_CAUSE) +runs on ConnHdlr { + var MME_UE_S1AP_ID mme_ue_id := g_pars.mme_ue_id; + var ENB_UE_S1AP_ID enb_ue_id := g_pars.idx; + var S1AP_PDU pdu; + + log("[eNB -> S1GW] -> MME: UE CONTEXT RELEASE REQUEST"); + f_ConnHdlr_tx_s1ap_from_enb(ts_S1AP_UeContextReleaseReq(mme_ue_id, enb_ue_id, cause)); + f_ConnHdlr_session_delete(g_pars.erabs); + log("eNB -> [S1GW -> MME]: UE CONTEXT RELEASE REQUEST"); + f_ConnHdlr_rx_s1ap_from_enb(pdu, tr_S1AP_UeContextReleaseReq(mme_ue_id, enb_ue_id, cause)); +} + +function f_ConnHdlr_ue_ctx_release_cmd(S1AP_IEs.Cause cause := c_REL_CMD_CAUSE) +runs on ConnHdlr { + var template (value) UE_S1AP_IDs ue_ids := { + uE_S1AP_ID_pair := { + mME_UE_S1AP_ID := g_pars.mme_ue_id, + eNB_UE_S1AP_ID := g_pars.idx, + iE_Extensions := omit + } + }; + var S1AP_PDU pdu; + + log("eNB <- [S1GW <- MME]: UE CONTEXT RELEASE COMMAND"); + f_ConnHdlr_tx_s1ap_from_mme(ts_S1AP_UeContextReleaseCmd(ue_ids, cause)); + f_ConnHdlr_session_delete(g_pars.erabs); + log("[eNB <- S1GW] <- MME: UE CONTEXT RELEASE COMMAND"); + f_ConnHdlr_rx_s1ap_from_mme(pdu, tr_S1AP_UeContextReleaseCmd(ue_ids, cause)); +} + +function f_ConnHdlr_ue_ctx_release_compl() +runs on ConnHdlr { + var MME_UE_S1AP_ID mme_ue_id := g_pars.mme_ue_id; + var ENB_UE_S1AP_ID enb_ue_id := g_pars.idx; + var S1AP_PDU pdu; + + log("[eNB -> S1GW] -> MME: UE CONTEXT RELEASE COMPLETE"); + f_ConnHdlr_tx_s1ap_from_enb(ts_S1AP_UeContextReleaseCompl(mme_ue_id, enb_ue_id)); + log("eNB -> [S1GW -> MME]: UE CONTEXT RELEASE COMPLETE"); + f_ConnHdlr_rx_s1ap_from_enb(pdu, tr_S1AP_UeContextReleaseCompl(mme_ue_id, enb_ue_id)); +} + } diff --git a/s1gw/S1GW_Tests.ttcn b/s1gw/S1GW_Tests.ttcn index 089bd0d..8bb2f09 100644 --- a/s1gw/S1GW_Tests.ttcn +++ b/s1gw/S1GW_Tests.ttcn @@ -468,6 +468,48 @@ f_TC_exec(refers(f_TC_initial_ctx_setup_failure)); } +/* Test UE CONTEXT RELEASE REQUEST procedure (eNB initiated) */ +function f_TC_ue_ctx_release_req(charstring id) runs on ConnHdlr { + f_ConnHdlr_s1ap_register(g_pars.genb_id); + f_ConnHdlr_s1ap_connect(mp_enb_bind_ip, mp_s1gw_enb_ip); + f_ConnHdlr_s1ap_setup(g_pars.genb_id); + + f_ConnHdlr_initial_ctx_setup_req(g_pars.erabs); + f_ConnHdlr_initial_ctx_setup_rsp(g_pars.erabs); + f_ConnHdlr_ue_ctx_release_req(); + + f_ConnHdlr_s1ap_disconnect(); + f_ConnHdlr_s1ap_unregister(g_pars.genb_id); +} +testcase TC_ue_ctx_release_req() runs on test_CT { + f_TC_exec(refers(f_TC_ue_ctx_release_req), num_erabs := 1); +} +testcase TC_ue_ctx_release_req3() runs on test_CT { + f_TC_exec(refers(f_TC_ue_ctx_release_req), num_erabs := 3); +} + +/* Test UE CONTEXT RELEASE COMMAND/COMPLETE procedure (MME initiated) */ +function f_TC_ue_ctx_release_cmd_compl(charstring id) runs on ConnHdlr { + f_ConnHdlr_s1ap_register(g_pars.genb_id); + f_ConnHdlr_s1ap_connect(mp_enb_bind_ip, mp_s1gw_enb_ip); + f_ConnHdlr_s1ap_setup(g_pars.genb_id); + + f_ConnHdlr_initial_ctx_setup_req(g_pars.erabs); + f_ConnHdlr_initial_ctx_setup_rsp(g_pars.erabs); + + f_ConnHdlr_ue_ctx_release_cmd(); + f_ConnHdlr_ue_ctx_release_compl(); + + f_ConnHdlr_s1ap_disconnect(); + f_ConnHdlr_s1ap_unregister(g_pars.genb_id); +} +testcase TC_ue_ctx_release_cmd_compl() runs on test_CT { + f_TC_exec(refers(f_TC_ue_ctx_release_cmd_compl), num_erabs := 1); +} +testcase TC_ue_ctx_release_cmd_compl3() runs on test_CT { + f_TC_exec(refers(f_TC_ue_ctx_release_cmd_compl), num_erabs := 3); +} + function f_TC_pfcp_heartbeat(charstring id) runs on ConnHdlr { var integer rts := f_PFCPEM_get_recovery_timestamp(); var PDU_PFCP pfcp_pdu; @@ -501,6 +543,10 @@ execute( TC_initial_ctx_setup_multi() ); execute( TC_initial_ctx_setup3_multi() ); execute( TC_initial_ctx_setup_failure() ); + execute( TC_ue_ctx_release_req() ); + execute( TC_ue_ctx_release_req3() ); + execute( TC_ue_ctx_release_cmd_compl() ); + execute( TC_ue_ctx_release_cmd_compl3() ); execute( TC_pfcp_heartbeat() ); } diff --git a/s1gw/expected-results.xml b/s1gw/expected-results.xml index c6995c9..c5cb28f 100644 --- a/s1gw/expected-results.xml +++ b/s1gw/expected-results.xml @@ -1,5 +1,5 @@ <?xml version="1.0"?> -<testsuite name='S1GW_Tests' tests='16' failures='0' errors='0' skipped='0' inconc='0' time='MASKED'> +<testsuite name='S1GW_Tests' tests='20' failures='0' errors='0' skipped='0' inconc='0' time='MASKED'> <testcase classname='S1GW_Tests' name='TC_setup' time='MASKED'/> <testcase classname='S1GW_Tests' name='TC_setup_multi' time='MASKED'/> <testcase classname='S1GW_Tests' name='TC_conn_term_by_mme' time='MASKED'/> @@ -15,5 +15,9 @@ <testcase classname='S1GW_Tests' name='TC_initial_ctx_setup_multi' time='MASKED'/> <testcase classname='S1GW_Tests' name='TC_initial_ctx_setup3_multi' time='MASKED'/> <testcase classname='S1GW_Tests' name='TC_initial_ctx_setup_failure' time='MASKED'/> + <testcase classname='S1GW_Tests' name='TC_ue_ctx_release_req' time='MASKED'/> + <testcase classname='S1GW_Tests' name='TC_ue_ctx_release_req3' time='MASKED'/> + <testcase classname='S1GW_Tests' name='TC_ue_ctx_release_cmd_compl' time='MASKED'/> + <testcase classname='S1GW_Tests' name='TC_ue_ctx_release_cmd_compl3' time='MASKED'/> <testcase classname='S1GW_Tests' name='TC_pfcp_heartbeat' time='MASKED'/> </testsuite> -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39462?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Change-Id: I065692f311e9d03630ab3ca2f6a03465418f0e71 Gerrit-Change-Number: 39462 Gerrit-PatchSet: 1 Gerrit-Owner: fixeria <vyanitskiy(a)sysmocom.de>

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[L] Change in osmo-ttcn3-hacks[master]: s1gw: add TC_e_rab_modify_ind_cnf[_multi]
by fixeria 03 Feb '25

03 Feb '25

Hello Jenkins Builder, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39145?usp=email to look at the new patch set (#3). The following approvals got outdated and were removed: Verified+1 by Jenkins Builder Change subject: s1gw: add TC_e_rab_modify_ind_cnf[_multi] ...................................................................... s1gw: add TC_e_rab_modify_ind_cnf[_multi] Test the E-RAB Modify procedure (eNB initiated), which is defined in 3GPP TS 36.413 section 8.2.4. Change-Id: Iec95ca0ecf37290bddfbefce1861f8ae66bf4db1 Related: SYS#7308 --- M s1gw/S1GW_ConnHdlr.ttcn M s1gw/S1GW_Tests.ttcn M s1gw/expected-results.xml 3 files changed, 258 insertions(+), 1 deletion(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/45/39145/3 -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39145?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newpatchset Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Change-Id: Iec95ca0ecf37290bddfbefce1861f8ae66bf4db1 Gerrit-Change-Number: 39145 Gerrit-PatchSet: 3 Gerrit-Owner: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder

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[S] Change in osmo-ttcn3-hacks[master]: library/s1ap: fix criticality in UE CONTEXT RELEASE PDUs
by fixeria 03 Feb '25

03 Feb '25

fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39460?usp=email ) Change subject: library/s1ap: fix criticality in UE CONTEXT RELEASE PDUs ...................................................................... library/s1ap: fix criticality in UE CONTEXT RELEASE PDUs Change-Id: I6c63b3ecb428b54705aea0c14610c00223651d8f Related: SYS#7310 --- M library/s1ap/S1AP_Templates.ttcn 1 file changed, 8 insertions(+), 8 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/60/39460/1 diff --git a/library/s1ap/S1AP_Templates.ttcn b/library/s1ap/S1AP_Templates.ttcn index cb74cb4..32ebfae 100644 --- a/library/s1ap/S1AP_Templates.ttcn +++ b/library/s1ap/S1AP_Templates.ttcn @@ -843,17 +843,17 @@ template (value) Cause cause) := { initiatingMessage := { procedureCode := id_UEContextReleaseRequest, - criticality := reject, + criticality := ignore, value_ := { UEContextReleaseRequest := { protocolIEs := { { id := S1AP_Constants.id_MME_UE_S1AP_ID, - criticality := ignore, + criticality := reject, value_ := {MME_UE_S1AP_ID := mme_id} }, { id := S1AP_Constants.id_eNB_UE_S1AP_ID, - criticality := ignore, + criticality := reject, value_ := {ENB_UE_S1AP_ID := enb_id} }, { id := S1AP_Constants.id_Cause, @@ -871,17 +871,17 @@ template (present) Cause cause := ?) := { initiatingMessage := { procedureCode := id_UEContextReleaseRequest, - criticality := reject, + criticality := ignore, value_ := { UEContextReleaseRequest := { protocolIEs := { { id := S1AP_Constants.id_MME_UE_S1AP_ID, - criticality := ignore, + criticality := reject, value_ := {MME_UE_S1AP_ID := mme_id} }, { id := S1AP_Constants.id_eNB_UE_S1AP_ID, - criticality := ignore, + criticality := reject, value_ := {ENB_UE_S1AP_ID := enb_id} }, { id := S1AP_Constants.id_Cause, @@ -906,7 +906,7 @@ protocolIEs := { { id := S1AP_Constants.id_UE_S1AP_IDs, - criticality := ignore, + criticality := reject, value_ := {UE_S1AP_IDs := mme_ids} }, { id := S1AP_Constants.id_Cause, @@ -954,7 +954,7 @@ protocolIEs := { { id := S1AP_Constants.id_MME_UE_S1AP_ID, - criticality := reject, + criticality := ignore, value_ := {MME_UE_S1AP_ID := mme_id} }, { id := S1AP_Constants.id_eNB_UE_S1AP_ID, -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39460?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Change-Id: I6c63b3ecb428b54705aea0c14610c00223651d8f Gerrit-Change-Number: 39460 Gerrit-PatchSet: 1 Gerrit-Owner: fixeria <vyanitskiy(a)sysmocom.de>

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[M] Change in osmo-ttcn3-hacks[master]: s1gw: add f_TC_exec()
by fixeria 03 Feb '25

03 Feb '25

fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39461?usp=email ) Change subject: s1gw: add f_TC_exec() ...................................................................... s1gw: add f_TC_exec() The idea is to reduce the amount of boilerplate code. Change-Id: I0df4ad15bc2dca2afb2c598c1b053f45b69c181b --- M s1gw/S1GW_Tests.ttcn 1 file changed, 30 insertions(+), 79 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/61/39461/1 diff --git a/s1gw/S1GW_Tests.ttcn b/s1gw/S1GW_Tests.ttcn index 729bc77..089bd0d 100644 --- a/s1gw/S1GW_Tests.ttcn +++ b/s1gw/S1GW_Tests.ttcn @@ -197,6 +197,22 @@ } } +function f_TC_exec(void_fn fn, + integer num_enbs := 1, + integer num_erabs := 1) +runs on test_CT { + var ConnHdlrList vc_conns; + + f_init(); + + for (var integer i := 0; i < num_enbs; i := i + 1) { + var ConnHdlrPars pars := valueof(t_ConnHdlrPars(i, num_erabs)); + vc_conns[i] := f_ConnHdlr_spawn(fn, pars); + } + + f_ConnHdlrList_all_done(vc_conns); +} + function f_TC_setup(charstring id) runs on ConnHdlr { f_ConnHdlr_s1ap_register(g_pars.genb_id); @@ -222,13 +238,7 @@ f_ConnHdlr_s1ap_unregister(g_pars.genb_id); } testcase TC_setup() runs on test_CT { - var ConnHdlrPars pars := valueof(t_ConnHdlrPars); - var ConnHdlr vc_conn; - - f_init(); - - vc_conn := f_ConnHdlr_spawn(refers(f_TC_setup), pars); - vc_conn.done; + f_TC_exec(refers(f_TC_setup)); } function f_TC_setup_multi(charstring id) runs on ConnHdlr { @@ -243,16 +253,7 @@ f_ConnHdlr_s1ap_unregister(g_pars.genb_id); } testcase TC_setup_multi() runs on test_CT { - var ConnHdlrList vc_conns; - - f_init(); - - for (var integer i := 0; i < mp_multi_enb_num; i := i + 1) { - var ConnHdlrPars pars := valueof(t_ConnHdlrPars(i)); - vc_conns[i] := f_ConnHdlr_spawn(refers(f_TC_setup_multi), pars); - } - - f_ConnHdlrList_all_done(vc_conns); + f_TC_exec(refers(f_TC_setup_multi), mp_multi_enb_num); } @@ -314,34 +315,21 @@ f_ConnHdlr_s1ap_disconnect(); f_ConnHdlr_s1ap_unregister(g_pars.genb_id); } -private function f_TC_e_rab_setup_exec(integer num_enbs, integer num_erabs) -runs on test_CT { - var ConnHdlrList vc_conns; - - f_init(); - - for (var integer i := 0; i < num_enbs; i := i + 1) { - var ConnHdlrPars pars := valueof(t_ConnHdlrPars(i, num_erabs)); - vc_conns[i] := f_ConnHdlr_spawn(refers(f_TC_e_rab_setup), pars); - } - - f_ConnHdlrList_all_done(vc_conns); -} /* 1 E-RAB at a time, single eNB */ testcase TC_e_rab_setup() runs on test_CT { - f_TC_e_rab_setup_exec(num_enbs := 1, num_erabs := 1); + f_TC_exec(refers(f_TC_e_rab_setup)); } /* 1 E-RAB at a time, multiple eNB connections */ testcase TC_e_rab_setup_multi() runs on test_CT { - f_TC_e_rab_setup_exec(num_enbs := mp_multi_enb_num, num_erabs := 1); + f_TC_exec(refers(f_TC_e_rab_setup), mp_multi_enb_num); } /* 3 E-RABs at a time, single eNB */ testcase TC_e_rab_setup3() runs on test_CT { - f_TC_e_rab_setup_exec(num_enbs := 1, num_erabs := 3); + f_TC_exec(refers(f_TC_e_rab_setup), 1, 3); } /* 3 E-RABs at a time, multiple eNB connections */ testcase TC_e_rab_setup3_multi() runs on test_CT { - f_TC_e_rab_setup_exec(num_enbs := mp_multi_enb_num, num_erabs := 3); + f_TC_exec(refers(f_TC_e_rab_setup), mp_multi_enb_num, 3); } /* Test E-RAB SETUP and RELEASE.ind procedures */ @@ -358,13 +346,7 @@ f_ConnHdlr_s1ap_unregister(g_pars.genb_id); } testcase TC_e_rab_release_ind() runs on test_CT { - var ConnHdlrPars pars := valueof(t_ConnHdlrPars); - var ConnHdlr vc_conn; - - f_init(); - - vc_conn := f_ConnHdlr_spawn(refers(f_TC_e_rab_release_ind), pars); - vc_conn.done; + f_TC_exec(refers(f_TC_e_rab_release_ind)); } /* Test E-RAB SETUP procedure being aborted by the S1GW due to @@ -418,13 +400,7 @@ f_ConnHdlr_s1ap_unregister(g_pars.genb_id); } testcase TC_e_rab_setup_failure() runs on test_CT { - var ConnHdlrPars pars := valueof(t_ConnHdlrPars); - var ConnHdlr vc_conn; - - f_init(); - - vc_conn := f_ConnHdlr_spawn(refers(f_TC_e_rab_setup_failure), pars); - vc_conn.done; + f_TC_exec(refers(f_TC_e_rab_setup_failure)); } /* Test INITIAL CONTEXT SETUP procedure (successful case) */ @@ -439,34 +415,21 @@ f_ConnHdlr_s1ap_disconnect(); f_ConnHdlr_s1ap_unregister(g_pars.genb_id); } -private function f_TC_initial_ctx_setup_exec(integer num_enbs, integer num_erabs) -runs on test_CT { - var ConnHdlrList vc_conns; - - f_init(); - - for (var integer i := 0; i < num_enbs; i := i + 1) { - var ConnHdlrPars pars := valueof(t_ConnHdlrPars(i, num_erabs)); - vc_conns[i] := f_ConnHdlr_spawn(refers(f_TC_initial_ctx_setup), pars); - } - - f_ConnHdlrList_all_done(vc_conns); -} /* 1 E-RAB at a time, single eNB */ testcase TC_initial_ctx_setup() runs on test_CT { - f_TC_initial_ctx_setup_exec(num_enbs := 1, num_erabs := 1); + f_TC_exec(refers(f_TC_initial_ctx_setup)); } /* 1 E-RAB at a time, multiple eNB connections */ testcase TC_initial_ctx_setup_multi() runs on test_CT { - f_TC_initial_ctx_setup_exec(num_enbs := mp_multi_enb_num, num_erabs := 1); + f_TC_exec(refers(f_TC_initial_ctx_setup), mp_multi_enb_num); } /* 3 E-RABs at a time, single eNB */ testcase TC_initial_ctx_setup3() runs on test_CT { - f_TC_initial_ctx_setup_exec(num_enbs := 1, num_erabs := 3); + f_TC_exec(refers(f_TC_initial_ctx_setup), 1, 3); } /* 3 E-RABs at a time, multiple eNB connections */ testcase TC_initial_ctx_setup3_multi() runs on test_CT { - f_TC_initial_ctx_setup_exec(num_enbs := mp_multi_enb_num, num_erabs := 3); + f_TC_exec(refers(f_TC_initial_ctx_setup), mp_multi_enb_num, 3); } /* Test INITIAL CONTEXT SETUP procedure (failure) */ @@ -502,13 +465,7 @@ f_ConnHdlr_s1ap_unregister(g_pars.genb_id); } testcase TC_initial_ctx_setup_failure() runs on test_CT { - var ConnHdlrPars pars := valueof(t_ConnHdlrPars); - var ConnHdlr vc_conn; - - f_init(); - - vc_conn := f_ConnHdlr_spawn(refers(f_TC_initial_ctx_setup_failure), pars); - vc_conn.done; + f_TC_exec(refers(f_TC_initial_ctx_setup_failure)); } function f_TC_pfcp_heartbeat(charstring id) runs on ConnHdlr { @@ -525,13 +482,7 @@ setverdict(pass); } testcase TC_pfcp_heartbeat() runs on test_CT { - var ConnHdlrPars pars := valueof(t_ConnHdlrPars); - var ConnHdlr vc_conn; - - f_init(); - - vc_conn := f_ConnHdlr_spawn(refers(f_TC_pfcp_heartbeat), pars); - vc_conn.done; + f_TC_exec(refers(f_TC_pfcp_heartbeat)); } control { -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39461?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Change-Id: I0df4ad15bc2dca2afb2c598c1b053f45b69c181b Gerrit-Change-Number: 39461 Gerrit-PatchSet: 1 Gerrit-Owner: fixeria <vyanitskiy(a)sysmocom.de>

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[M] Change in osmo-bsc[master]: nokia_site: Add object_identity, object_state and object_identity_sta...
by csaba.sipos 03 Feb '25

03 Feb '25

Attention is currently required from: fixeria, laforge, pespin. csaba.sipos has posted comments on this change by csaba.sipos. ( https://gerrit.osmocom.org/c/osmo-bsc/+/39416?usp=email ) Change subject: nokia_site: Add object_identity, object_state and object_identity_state attributes ...................................................................... Patch Set 8: (1 comment) File src/osmo-bsc/bts_nokia_site.c: https://gerrit.osmocom.org/c/osmo-bsc/+/39416/comment/4fa20b87_a2cd5418?usp… : PS7, Line 1827: LOG_BTS(bts, DNM, LOGL_NOTICE, "State changed: %s=%d, %s\n", > wrong indentation Done -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/39416?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: comment Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Change-Id: Id9f819b0649ba3c247db72d7d738e49c72388dc3 Gerrit-Change-Number: 39416 Gerrit-PatchSet: 8 Gerrit-Owner: csaba.sipos <metro4(a)freemail.hu> 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-Attention: laforge <laforge(a)osmocom.org> Gerrit-Attention: pespin <pespin(a)sysmocom.de> Gerrit-Attention: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Comment-Date: Mon, 03 Feb 2025 20:18:19 +0000 Gerrit-HasComments: Yes Gerrit-Has-Labels: No Comment-In-Reply-To: pespin <pespin(a)sysmocom.de>

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[M] Change in osmo-bsc[master]: nokia_site: Add object_identity, object_state and object_identity_sta...
by csaba.sipos 03 Feb '25

03 Feb '25

Attention is currently required from: csaba.sipos, fixeria, laforge. Hello Jenkins Builder, fixeria, laforge, pespin, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/c/osmo-bsc/+/39416?usp=email to look at the new patch set (#8). The following approvals got outdated and were removed: Verified+1 by Jenkins Builder Change subject: nokia_site: Add object_identity, object_state and object_identity_state attributes ...................................................................... nokia_site: Add object_identity, object_state and object_identity_state attributes Note: these are cosmetic changes so far, the plan is to use them in the future to finetune the Nokia OML and RSL bootstrap logic. Thanks Domi for helping with the code! Change-Id: Id9f819b0649ba3c247db72d7d738e49c72388dc3 --- M src/osmo-bsc/bts_nokia_site.c 1 file changed, 67 insertions(+), 13 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/16/39416/8 -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/39416?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newpatchset Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Change-Id: Id9f819b0649ba3c247db72d7d738e49c72388dc3 Gerrit-Change-Number: 39416 Gerrit-PatchSet: 8 Gerrit-Owner: csaba.sipos <metro4(a)freemail.hu> 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-Attention: csaba.sipos <metro4(a)freemail.hu> Gerrit-Attention: laforge <laforge(a)osmocom.org> Gerrit-Attention: fixeria <vyanitskiy(a)sysmocom.de>

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