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[XL] Change in osmo-sgsn[master]: Adopt iu_client from osmo-iuh

by Jenkins Builder

Jenkins Builder has posted comments on this change by lynxis lazus. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40812?usp=email ) Change subject: Adopt iu_client from osmo-iuh ...................................................................... Patch Set 1: (15 comments) File include/osmocom/sgsn/iu_client.h: Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/cac97608_81c710b6?us… : PS1, Line 70: typedef int (* ranap_iu_recv_cb_t )(struct msgb *msg, struct gprs_ra_id *ra_id, do not add new typedefs Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/bbb47fa4_e85b0453?us… : PS1, Line 70: typedef int (* ranap_iu_recv_cb_t )(struct msgb *msg, struct gprs_ra_id *ra_id, space prohibited after that '*' (ctx:BxW) Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/44836e91_67482f63?us… : PS1, Line 70: typedef int (* ranap_iu_recv_cb_t )(struct msgb *msg, struct gprs_ra_id *ra_id, space prohibited before that close parenthesis ')' Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/dd039823_5be72d30?us… : PS1, Line 73: typedef int (* ranap_iu_event_cb_t )(struct ranap_ue_conn_ctx *ue_ctx, do not add new typedefs Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/a227921d_4f1ab95d?us… : PS1, Line 73: typedef int (* ranap_iu_event_cb_t )(struct ranap_ue_conn_ctx *ue_ctx, space prohibited after that '*' (ctx:BxW) Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/6794df86_bf12acda?us… : PS1, Line 73: typedef int (* ranap_iu_event_cb_t )(struct ranap_ue_conn_ctx *ue_ctx, space prohibited before that close parenthesis ')' Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/69b3e3e9_6343b807?us… : PS1, Line 76: typedef int (* ranap_iu_rab_ass_resp_cb_t )(struct ranap_ue_conn_ctx *ue_ctx, uint8_t rab_id, space prohibited after that '*' (ctx:BxW) Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/e104cdc5_fc2dc166?us… : PS1, Line 76: typedef int (* ranap_iu_rab_ass_resp_cb_t )(struct ranap_ue_conn_ctx *ue_ctx, uint8_t rab_id, space prohibited before that close parenthesis ')' File src/sgsn/iu_client.c: Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/52a3f888_d4fecf0d?us… : PS1, Line 399: msg = ranap_new_msg_sec_mod_cmd(vec->ik, send_ck? vec->ck : NULL, spaces required around that '?' (ctx:VxW) Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/ed4c6631_c206cb83?us… : PS1, Line 443: -- not used at present -- please, no spaces at the start of a line Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/ccde724d_c7a57127?us… : PS1, Line 443: -- not used at present -- space prohibited after that '--' (ctx:ExW) Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/5054efe2_390b3179?us… : PS1, Line 443: -- not used at present -- space prohibited before that '--' (ctx:WxE) Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/0eff36f1_faa4e5db?us… : PS1, Line 527: if (ies->presenceMask & DIRECTTRANSFERIES_RANAP_RAC_PRESENT) { braces {} are not necessary for single statement blocks Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/bd1ae5ee_fbe47a3a?us… : PS1, Line 669: else else should follow close brace '}' Robot Comment from checkpatch (run ID ): https://gerrit.osmocom.org/c/osmo-sgsn/+/40812/comment/cf22a764_f5af726d?us… : PS1, Line 874: LOGPIUC(log_level, ", for %s %08x\n", is_ps? "PTMSI" : "TMSI", *tmsi_or_ptmsi); spaces required around that '?' (ctx:VxW) -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40812?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: comment Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: I9c0d9667ddcb57b52eae34da942acfc1688c1418 Gerrit-Change-Number: 40812 Gerrit-PatchSet: 1 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu> Gerrit-CC: Jenkins Builder Gerrit-Comment-Date: Fri, 01 Aug 2025 13:03:17 +0000 Gerrit-HasComments: Yes Gerrit-Has-Labels: No

2 weeks, 2 days

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[S] Change in osmo-sgsn[master]: routing area: add LOGRA() logging macro

by lynxis lazus

Attention is currently required from: fixeria, pespin. lynxis lazus has posted comments on this change by lynxis lazus. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40692?usp=email ) Change subject: routing area: add LOGRA() logging macro ...................................................................... Patch Set 3: (2 comments) File include/osmocom/sgsn/gprs_routing_area.h: https://gerrit.osmocom.org/c/osmo-sgsn/+/40692/comment/77f959ad_ae4a8037?us… : PS2, Line 15: char __log_rai_buf[32]; \ > are you sure 32 is enough? sounds a bit tight. I used the same size as libosmocore uses it in osmo_rai_name2(). But it is enought because it should be only 18 chars including '\0'. 901-070-65535-254 https://gerrit.osmocom.org/c/osmo-sgsn/+/40692/comment/e587bd79_b3e233ea?us… : PS2, Line 16: osmo_rai_name2_buf > Yeah, I had similar problems in libosmo-sigtran. I'm in favour of using _buf() here. […] Done -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40692?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: comment Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: Ib287b70c34b21ce64bc864f69fcf6af5fa0698b9 Gerrit-Change-Number: 40692 Gerrit-PatchSet: 3 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-Attention: pespin <pespin(a)sysmocom.de> Gerrit-Attention: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Comment-Date: Fri, 01 Aug 2025 12:56:09 +0000 Gerrit-HasComments: Yes Gerrit-Has-Labels: No Comment-In-Reply-To: pespin <pespin(a)sysmocom.de> Comment-In-Reply-To: fixeria <vyanitskiy(a)sysmocom.de>

2 weeks, 2 days

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[M] Change in osmo-sgsn[master]: routing area: introduce ran_type on the RA

by lynxis lazus

Attention is currently required from: daniel, fixeria, pespin. lynxis lazus has posted comments on this change by lynxis lazus. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40688?usp=email ) Change subject: routing area: introduce ran_type on the RA ...................................................................... Patch Set 3: (1 comment) File src/sgsn/gprs_routing_area.c: https://gerrit.osmocom.org/c/osmo-sgsn/+/40688/comment/b4b6075a_b74d4e97?us… : PS2, Line 201: valid for GERAN > Most of the previous api is related to geran. But will it do in a following commit. I'll do it later in https://gerrit.osmocom.org/c/osmo-sgsn/+/40811 -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40688?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: comment Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: I59c35f1a4912ff11574bb31e4fe424816993548c Gerrit-Change-Number: 40688 Gerrit-PatchSet: 3 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: daniel <dwillmann(a)sysmocom.de> Gerrit-CC: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-CC: pespin <pespin(a)sysmocom.de> Gerrit-Attention: pespin <pespin(a)sysmocom.de> Gerrit-Attention: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Attention: daniel <dwillmann(a)sysmocom.de> Gerrit-Comment-Date: Fri, 01 Aug 2025 12:56:02 +0000 Gerrit-HasComments: Yes Gerrit-Has-Labels: No Comment-In-Reply-To: pespin <pespin(a)sysmocom.de> Comment-In-Reply-To: fixeria <vyanitskiy(a)sysmocom.de> Comment-In-Reply-To: lynxis lazus <lynxis(a)fe80.eu>

2 weeks, 2 days

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[M] Change in osmo-sgsn[master]: tests: RA: add tests when a RA/cell moves GERAN <=> UTRAN

by lynxis lazus

lynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40814?usp=email ) Change subject: tests: RA: add tests when a RA/cell moves GERAN <=> UTRAN ...................................................................... tests: RA: add tests when a RA/cell moves GERAN <=> UTRAN Change-Id: I1035e6cecdc5b2898bfb11817e569cd02fa7fa48 --- M tests/gprs_routing_area/gprs_routing_area_test.c M tests/gprs_routing_area/gprs_routing_area_test.ok 2 files changed, 103 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/14/40814/1 diff --git a/tests/gprs_routing_area/gprs_routing_area_test.c b/tests/gprs_routing_area/gprs_routing_area_test.c index b3f8ed1..42950be 100644 --- a/tests/gprs_routing_area/gprs_routing_area_test.c +++ b/tests/gprs_routing_area/gprs_routing_area_test.c @@ -24,6 +24,7 @@ #include <osmocom/core/rate_ctr.h> #include <osmocom/core/utils.h> #include <osmocom/gsm/apn.h> +#include <osmocom/gsm/gsm23003.h> #include <osmocom/gsm/gsm_utils.h> #include <osmocom/gsm/gsup.h> #include <osmocom/gprs/gprs_bssgp.h> @@ -537,6 +538,100 @@ cleanup_test(); } +/* check if a GERAN RA/cell with the same LAC as an already register UTRAN gets rejected */ +void test_routing_area_mv_utran_geran_reject(void) +{ + int rc; + + /* GERAN */ + struct osmo_routing_area_id geran_rai = { + .lac = { + .plmn = { .mcc = 262, .mnc = 42, .mnc_3_digits = false }, + .lac = 24 + }, + .rac = 43 + }; + struct osmo_cell_global_id_ps cgi_ps = { + .rai = geran_rai, + .cell_identity = 9998, + }; + uint16_t nsei = 2, bvci = 3; + + /* UTRAN */ + struct osmo_routing_area_id utran_rai = { + .lac = { + .plmn = { .mcc = 262, .mnc = 42, .mnc_3_digits = false }, + .lac = 24 + }, + .rac = 43 + }; + struct osmo_rnc_id rnc_id = { + .plmn = utran_rai.lac.plmn, + .rnc_id = 2222 + }; + + sgsn = sgsn_instance_alloc(tall_sgsn_ctx); + + printf("Testing Routing Area mv utran -> geran\n"); + + printf(" Registering UTRAN RA\n"); + rc = sgsn_ra_utran_register(&utran_rai, &rnc_id); + OSMO_ASSERT(rc == 0); + + printf(" Registering GERAN RA/cell via BVC Reset Ind (should fail)\n"); + rc = sgsn_ra_bvc_reset_ind(nsei, bvci, &cgi_ps); + OSMO_ASSERT(rc != 0); + + cleanup_test(); +} + +/* check if a UTRAN RA with the same LAC as an already register GERAN RA gets rejected */ +void test_routing_area_mv_geran_utran_reject(void) +{ + int rc; + + /* GERAN */ + struct osmo_routing_area_id geran_rai = { + .lac = { + .plmn = { .mcc = 262, .mnc = 42, .mnc_3_digits = false }, + .lac = 24 + }, + .rac = 43 + }; + struct osmo_cell_global_id_ps cgi_ps = { + .rai = geran_rai, + .cell_identity = 9998, + }; + uint16_t nsei = 2, bvci = 3; + + /* UTRAN */ + struct osmo_routing_area_id utran_rai = { + .lac = { + .plmn = { .mcc = 262, .mnc = 42, .mnc_3_digits = false }, + .lac = 24 + }, + .rac = 43 + }; + struct osmo_rnc_id rnc_id = { + .plmn = utran_rai.lac.plmn, + .rnc_id = 2222 + }; + + sgsn = sgsn_instance_alloc(tall_sgsn_ctx); + + printf("Testing Routing Area mv geran -> utran\n"); + + printf(" Registering GERAN RA/cell via BVC Reset Ind\n"); + rc = sgsn_ra_bvc_reset_ind(nsei, bvci, &cgi_ps); + OSMO_ASSERT(rc == 0); + + printf(" Registering UTRAN RA (should fail)\n"); + rc = sgsn_ra_utran_register(&utran_rai, &rnc_id); + OSMO_ASSERT(rc != 0); + + cleanup_test(); +} + static struct log_info_cat gprs_categories[] = { [DMM] = { .name = "DMM", @@ -601,6 +696,8 @@ test_routing_area_paging(); test_routing_area_geran_geran_sig_reset(); test_routing_area_geran_geran_bvci_change(); + test_routing_area_mv_geran_utran_reject(); + test_routing_area_mv_utran_geran_reject(); printf("Done\n"); talloc_report_full(osmo_sgsn_ctx, stderr); diff --git a/tests/gprs_routing_area/gprs_routing_area_test.ok b/tests/gprs_routing_area/gprs_routing_area_test.ok index 4ce9944..002baaa 100644 --- a/tests/gprs_routing_area/gprs_routing_area_test.ok +++ b/tests/gprs_routing_area/gprs_routing_area_test.ok @@ -20,4 +20,10 @@ Checking cell on BVCI B Ensure only 1 RA is present Ensure only 1 cell is present +Testing Routing Area mv geran -> utran + Registering GERAN RA/cell via BVC Reset Ind + Registering UTRAN RA (should fail) +Testing Routing Area mv utran -> geran + Registering UTRAN RA + Registering GERAN RA/cell via BVC Reset Ind (should fail) Done -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40814?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: I1035e6cecdc5b2898bfb11817e569cd02fa7fa48 Gerrit-Change-Number: 40814 Gerrit-PatchSet: 1 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu>

2 weeks, 2 days

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[M] Change in osmo-sgsn[master]: tests: RA: add test for a GERAN cell to change its BVCI

by lynxis lazus

lynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40809?usp=email ) Change subject: tests: RA: add test for a GERAN cell to change its BVCI ...................................................................... tests: RA: add test for a GERAN cell to change its BVCI Change-Id: Idcada8364bf62aae2244b92e0d7a43c120c9c0ad --- M tests/gprs_routing_area/gprs_routing_area_test.c M tests/gprs_routing_area/gprs_routing_area_test.ok 2 files changed, 70 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/09/40809/1 diff --git a/tests/gprs_routing_area/gprs_routing_area_test.c b/tests/gprs_routing_area/gprs_routing_area_test.c index c43c771..e61377c 100644 --- a/tests/gprs_routing_area/gprs_routing_area_test.c +++ b/tests/gprs_routing_area/gprs_routing_area_test.c @@ -424,6 +424,66 @@ cleanup_test(); } +/* check if a GERAN cell X can changed it's BVCI by BVC Reset Ind */ +void test_routing_area_geran_geran_bvci_change(void) +{ + int rc; + + /* GERAN */ + struct osmo_routing_area_id geran_rai = { + .lac = { + .plmn = { .mcc = 262, .mnc = 42, .mnc_3_digits = false }, + .lac = 24 + }, + .rac = 43 + }; + struct osmo_cell_global_id_ps cgi_ps = { + .rai = geran_rai, + .cell_identity = 9998, + }; + uint16_t nsei = 2, bvci_a = 3, bvci_b = 4; + + struct sgsn_ra_cell *cell_a, *cell_b; + + sgsn = sgsn_instance_alloc(tall_sgsn_ctx); + + printf("Testing Routing Area GERAN to GERAN (BVCI change)\n"); + + printf(" Registering GERAN RA/cell via BVCI A/BVC Reset Ind\n"); + rc = sgsn_ra_bvc_reset_ind(nsei, bvci_a, &cgi_ps); + OSMO_ASSERT(rc == 0); + + printf(" Checking cell on BVCI A\n"); + cell_a = sgsn_ra_get_cell_by_cgi_ps(&cgi_ps); + OSMO_ASSERT(cell_a); + OSMO_ASSERT(cell_a->ran_type == RA_TYPE_GERAN_Gb); + OSMO_ASSERT(cell_a->u.geran.bvci == bvci_a); + + printf(" Ensure only 1 RA is present\n"); + OSMO_ASSERT(llist_count(&sgsn->routing_area->ra_list) == 1); + + printf(" Ensure only 1 cell is present\n"); + OSMO_ASSERT(llist_count(&cell_a->ra->cells_alive_list) == 1); + + printf(" Registering GERAN RA/cell via BVCI B/BVC Reset Ind\n"); + rc = sgsn_ra_bvc_reset_ind(nsei, bvci_b, &cgi_ps); + OSMO_ASSERT(rc == 0); + + printf(" Checking cell on BVCI B\n"); + cell_b = sgsn_ra_get_cell_by_cgi_ps(&cgi_ps); + OSMO_ASSERT(cell_b); + OSMO_ASSERT(cell_b->ran_type == RA_TYPE_GERAN_Gb); + OSMO_ASSERT(cell_b->u.geran.bvci == bvci_b); + + printf(" Ensure only 1 RA is present\n"); + OSMO_ASSERT(llist_count(&sgsn->routing_area->ra_list) == 1); + + printf(" Ensure only 1 cell is present\n"); + OSMO_ASSERT(llist_count(&cell_b->ra->cells_alive_list) == 1); + + cleanup_test(); +} + static struct log_info_cat gprs_categories[] = { [DMM] = { .name = "DMM", @@ -486,6 +546,7 @@ test_routing_area_reset_ind(); test_routing_area_nsei_free(); test_routing_area_paging(); + test_routing_area_geran_geran_bvci_change(); printf("Done\n"); talloc_report_full(osmo_sgsn_ctx, stderr); diff --git a/tests/gprs_routing_area/gprs_routing_area_test.ok b/tests/gprs_routing_area/gprs_routing_area_test.ok index 78cee7e..c506abc 100644 --- a/tests/gprs_routing_area/gprs_routing_area_test.ok +++ b/tests/gprs_routing_area/gprs_routing_area_test.ok @@ -4,4 +4,13 @@ Testing Routing Area BSSGP BVC RESET IND Testing Routing Area nsei failure Testing Routing Area paging +Testing Routing Area GERAN to GERAN (BVCI change) + Registering GERAN RA/cell via BVCI A/BVC Reset Ind + Checking cell on BVCI A + Ensure only 1 RA is present + Ensure only 1 cell is present + Registering GERAN RA/cell via BVCI B/BVC Reset Ind + Checking cell on BVCI B + Ensure only 1 RA is present + Ensure only 1 cell is present Done -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40809?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: Idcada8364bf62aae2244b92e0d7a43c120c9c0ad Gerrit-Change-Number: 40809 Gerrit-PatchSet: 1 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu>

2 weeks, 2 days

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[M] Change in osmo-sgsn[master]: BSSGP: reset cells when receiving a Reset on Signal BVCI

by lynxis lazus

lynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40810?usp=email ) Change subject: BSSGP: reset cells when receiving a Reset on Signal BVCI ...................................................................... BSSGP: reset cells when receiving a Reset on Signal BVCI When a PCU sends a BVC Reset over BSSGP on the Signal BVCI, all cells which has been setuped previously via PtP BVCIs has to be removed. They might be introduced after the Signal BVCI is reseted. Change-Id: I380c8f9ef90d8c7face5c380d923ab5168f5b484 --- M include/osmocom/sgsn/gprs_routing_area.h M src/sgsn/gprs_bssgp.c M src/sgsn/gprs_routing_area.c M tests/gprs_routing_area/gprs_routing_area_test.c M tests/gprs_routing_area/gprs_routing_area_test.ok 5 files changed, 90 insertions(+), 13 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/10/40810/1 diff --git a/include/osmocom/sgsn/gprs_routing_area.h b/include/osmocom/sgsn/gprs_routing_area.h index 90cb0f4..1e60ccc 100644 --- a/include/osmocom/sgsn/gprs_routing_area.h +++ b/include/osmocom/sgsn/gprs_routing_area.h @@ -91,8 +91,11 @@ struct sgsn_ra_cell *sgsn_ra_cell_alloc_geran(struct sgsn_ra *ra, uint16_t cell_id, uint16_t nsei, uint16_t bvci); void sgsn_ra_cell_free(struct sgsn_ra_cell *cell); -/* Called by BSSGP layer to inform about a reset on a BVCI */ -int sgsn_ra_bvc_reset_ind(uint16_t nsei, uint16_t bvci, struct osmo_cell_global_id_ps *cgi_ps); +/* GERAN */ +/* Called by BSSGP layer to inform about a reset on a PtP BVCI */ +int sgsn_ra_bvc_cell_reset_ind(uint16_t nsei, uint16_t bvci, struct osmo_cell_global_id_ps *cgi_ps); +/* Called by BSSGP layer to inform about a reset on a Signal BVCI */ +void sgsn_ra_bvc_sign_reset_ind(uint16_t nsei); /* FIXME: handle BVC BLOCK/UNBLOCK/UNAVAILABLE */ /* Called by NS-VC layer to inform about an unavailable NSEI (and all BVCI on them) */ int sgsn_ra_nsei_failure_ind(uint16_t nsei); diff --git a/src/sgsn/gprs_bssgp.c b/src/sgsn/gprs_bssgp.c index 58aeb75..42cd073 100644 --- a/src/sgsn/gprs_bssgp.c +++ b/src/sgsn/gprs_bssgp.c @@ -40,6 +40,14 @@ { struct osmo_cell_global_id_ps cgi_ps = {}; + /* Signalling: BVCI == 0, no CGI-PS + * PtP BVCI: BVCI != 0, CGI-PS */ + + if (bp->bvci == 0) { + sgsn_ra_bvc_sign_reset_ind(bp->nsei); + return 0; + } + if (!bp->tp) return -EINVAL; @@ -47,7 +55,7 @@ return -EINVAL; bssgp_parse_cell_id2(&cgi_ps.rai, &cgi_ps.cell_identity, TLVP_VAL(bp->tp, BSSGP_IE_CELL_ID), 8); - return sgsn_ra_bvc_reset_ind(bp->nsei, bp->bvci, &cgi_ps); + return sgsn_ra_bvc_cell_reset_ind(bp->nsei, bp->bvci, &cgi_ps); } /* call-back function for the BSSGP protocol */ diff --git a/src/sgsn/gprs_routing_area.c b/src/sgsn/gprs_routing_area.c index 3ee730f..40bee05 100644 --- a/src/sgsn/gprs_routing_area.c +++ b/src/sgsn/gprs_routing_area.c @@ -283,14 +283,14 @@ return sgsn_ra_get_cell_by_lai(&cgi->lai, cgi->cell_identity); } -/*! Callback from the BSSGP layer on NM RESET IND +/*! Callback from the BSSGP layer on NM RESET IND for a cell (PtP BVCI). * * \param nsei * \param bvci * \param cgi_ps * \return 0 on success or -ENOMEM */ -int sgsn_ra_bvc_reset_ind(uint16_t nsei, uint16_t bvci, struct osmo_cell_global_id_ps *cgi_ps) +int sgsn_ra_bvc_cell_reset_ind(uint16_t nsei, uint16_t bvci, struct osmo_cell_global_id_ps *cgi_ps) { struct sgsn_ra *ra; struct sgsn_ra_cell *cell; @@ -385,6 +385,11 @@ return found ? 0 : -ENOENT; } +void sgsn_ra_bvc_sign_reset_ind(uint16_t nsei) +{ + sgsn_ra_nsei_failure_ind(nsei); +} + int sgsn_ra_geran_page_ra(const struct osmo_routing_area_id *rai, struct sgsn_mm_ctx *mmctx) { struct sgsn_ra *ra; diff --git a/tests/gprs_routing_area/gprs_routing_area_test.c b/tests/gprs_routing_area/gprs_routing_area_test.c index e61377c..b3f8ed1 100644 --- a/tests/gprs_routing_area/gprs_routing_area_test.c +++ b/tests/gprs_routing_area/gprs_routing_area_test.c @@ -268,14 +268,14 @@ OSMO_ASSERT(llist_count(&sgsn->routing_area->ra_list) == 1); OSMO_ASSERT(llist_count(&ra_a->cells_alive_list) == 0); - rc = sgsn_ra_bvc_reset_ind(nsei, bvci, &cgi_ps); + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci, &cgi_ps); OSMO_ASSERT(rc == 0); OSMO_ASSERT(llist_count(&ra_a->cells_alive_list) == 1); cell_a = sgsn_ra_get_cell_by_cgi(&cgi); OSMO_ASSERT(cell_a); - rc = sgsn_ra_bvc_reset_ind(nsei, bvci, &cgi_ps); + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci, &cgi_ps); OSMO_ASSERT(rc == 0); cell_b = sgsn_ra_get_cell_by_cgi(&cgi); @@ -285,7 +285,7 @@ sgsn_ra_free(ra_a); OSMO_ASSERT(llist_empty(&sgsn->routing_area->ra_list)); - rc = sgsn_ra_bvc_reset_ind(nsei, bvci, &cgi_ps); + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci, &cgi_ps); OSMO_ASSERT(rc == 0); OSMO_ASSERT(llist_count(&sgsn->routing_area->ra_list) == 1); @@ -320,7 +320,7 @@ sgsn = sgsn_instance_alloc(tall_sgsn_ctx); - rc = sgsn_ra_bvc_reset_ind(nsei, bvci, &cgi_ps); + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci, &cgi_ps); OSMO_ASSERT(rc == 0); ra_a = sgsn_ra_get_ra(&cgi_ps.rai); @@ -402,11 +402,11 @@ g_paging[0].valid = true; g_paging[0].paged = false; - rc = sgsn_ra_bvc_reset_ind(nsei, bvci, &cgi_ps); + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci, &cgi_ps); OSMO_ASSERT(rc == 0); cgi_ps.cell_identity++; - rc = sgsn_ra_bvc_reset_ind(nsei, bvci+1, &cgi_ps); + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci+1, &cgi_ps); OSMO_ASSERT(rc == 0); g_paging[1].bvci = bvci+1; @@ -424,6 +424,59 @@ cleanup_test(); } +/* check if a GERAN cell got removed when sending a Reset Ind on Sig BVCI */ +void test_routing_area_geran_geran_sig_reset(void) +{ + int rc; + + /* GERAN */ + struct osmo_routing_area_id geran_rai = { + .lac = { + .plmn = { .mcc = 262, .mnc = 42, .mnc_3_digits = false }, + .lac = 24 + }, + .rac = 43 + }; + struct osmo_cell_global_id_ps cgi_ps = { + .rai = geran_rai, + .cell_identity = 9998, + }; + uint16_t nsei = 2, bvci = 5; + + struct sgsn_ra_cell *cell; + + sgsn = sgsn_instance_alloc(tall_sgsn_ctx); + + printf("Testing Routing Area GERAN BVCI Signalling Reset Ind\n"); + + printf(" Registering GERAN RA/cell via BVCI 5/BVC Reset Ind\n"); + sgsn_ra_bvc_sign_reset_ind(nsei); + + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci, &cgi_ps); + OSMO_ASSERT(rc == 0); + + printf(" Checking cell on BVCI 5\n"); + cell = sgsn_ra_get_cell_by_cgi_ps(&cgi_ps); + OSMO_ASSERT(cell); + OSMO_ASSERT(cell->ran_type == RA_TYPE_GERAN_Gb); + OSMO_ASSERT(cell->u.geran.bvci == bvci); + + printf(" Ensure only 1 RA is present\n"); + OSMO_ASSERT(llist_count(&sgsn->routing_area->ra_list) == 1); + + printf(" Ensure only 1 cell is present\n"); + OSMO_ASSERT(llist_count(&cell->ra->cells_alive_list) == 1); + + printf(" Drop all cells via BVC Reset Ind on Signalling BVCI\n"); + sgsn_ra_bvc_sign_reset_ind(nsei); + + printf(" Ensure only 0 RAs are present\n"); + OSMO_ASSERT(llist_count(&sgsn->routing_area->ra_list) == 0); + + cleanup_test(); +} + + /* check if a GERAN cell X can changed it's BVCI by BVC Reset Ind */ void test_routing_area_geran_geran_bvci_change(void) { @@ -450,7 +503,7 @@ printf("Testing Routing Area GERAN to GERAN (BVCI change)\n"); printf(" Registering GERAN RA/cell via BVCI A/BVC Reset Ind\n"); - rc = sgsn_ra_bvc_reset_ind(nsei, bvci_a, &cgi_ps); + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci_a, &cgi_ps); OSMO_ASSERT(rc == 0); printf(" Checking cell on BVCI A\n"); @@ -466,7 +519,7 @@ OSMO_ASSERT(llist_count(&cell_a->ra->cells_alive_list) == 1); printf(" Registering GERAN RA/cell via BVCI B/BVC Reset Ind\n"); - rc = sgsn_ra_bvc_reset_ind(nsei, bvci_b, &cgi_ps); + rc = sgsn_ra_bvc_cell_reset_ind(nsei, bvci_b, &cgi_ps); OSMO_ASSERT(rc == 0); printf(" Checking cell on BVCI B\n"); @@ -546,6 +599,7 @@ test_routing_area_reset_ind(); test_routing_area_nsei_free(); test_routing_area_paging(); + test_routing_area_geran_geran_sig_reset(); test_routing_area_geran_geran_bvci_change(); printf("Done\n"); diff --git a/tests/gprs_routing_area/gprs_routing_area_test.ok b/tests/gprs_routing_area/gprs_routing_area_test.ok index c506abc..4ce9944 100644 --- a/tests/gprs_routing_area/gprs_routing_area_test.ok +++ b/tests/gprs_routing_area/gprs_routing_area_test.ok @@ -4,6 +4,13 @@ Testing Routing Area BSSGP BVC RESET IND Testing Routing Area nsei failure Testing Routing Area paging +Testing Routing Area GERAN BVCI Signalling Reset Ind + Registering GERAN RA/cell via BVCI 5/BVC Reset Ind + Checking cell on BVCI 5 + Ensure only 1 RA is present + Ensure only 1 cell is present + Drop all cells via BVC Reset Ind on Signalling BVCI + Ensure only 0 RAs are present Testing Routing Area GERAN to GERAN (BVCI change) Registering GERAN RA/cell via BVCI A/BVC Reset Ind Checking cell on BVCI A -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40810?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: I380c8f9ef90d8c7face5c380d923ab5168f5b484 Gerrit-Change-Number: 40810 Gerrit-PatchSet: 1 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu>

2 weeks, 2 days

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[NoOp] Change in osmo-sgsn[master]: TODO: rename all RA functions with a prefix for geran

by lynxis lazus

lynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40811?usp=email ) Change subject: TODO: rename all RA functions with a prefix for geran ...................................................................... TODO: rename all RA functions with a prefix for geran Change-Id: Ic616bd8f9afe6cd3702cd4af08706b7b36987f42 --- 0 files changed, 0 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/11/40811/1 -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40811?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: Ic616bd8f9afe6cd3702cd4af08706b7b36987f42 Gerrit-Change-Number: 40811 Gerrit-PatchSet: 1 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu>

2 weeks, 2 days

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[M] Change in osmo-sgsn[master]: WIP iuh

by lynxis lazus

lynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40813?usp=email ) Change subject: WIP iuh ...................................................................... WIP iuh Change-Id: I1b1aedd2a7c358bd388aa3d8a9f3c6a0011b4889 --- M include/osmocom/sgsn/gprs_routing_area.h M src/sgsn/gprs_ranap.c M src/sgsn/gprs_routing_area.c 3 files changed, 93 insertions(+), 3 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/13/40813/1 diff --git a/include/osmocom/sgsn/gprs_routing_area.h b/include/osmocom/sgsn/gprs_routing_area.h index 1e60ccc..c32e332 100644 --- a/include/osmocom/sgsn/gprs_routing_area.h +++ b/include/osmocom/sgsn/gprs_routing_area.h @@ -56,6 +56,12 @@ * For UTRAN only do a LAC/RAC <> RNC relation and don't have a specific cell relation. */ enum sgsn_ra_ran_type ran_type; + union { + struct { + /* the RNC id must be the same for a given Routing Area */ + struct osmo_rnc_id rnc_id; + } utran; + } u; /* GERAN/UTRAN: cells contains a list of sgsn_ra_cells which are alive */ struct llist_head cells_alive_list; @@ -77,8 +83,7 @@ } geran; struct { - /* TODO: unused */ - uint16_t rncid; + /* the RNC id must be the same for a given Routing Area */ uint16_t sac; } utran; } u; @@ -100,14 +105,18 @@ /* Called by NS-VC layer to inform about an unavailable NSEI (and all BVCI on them) */ int sgsn_ra_nsei_failure_ind(uint16_t nsei); +/* UTRAN */ +int sgsn_ra_utran_register(const struct osmo_routing_area_id *rai, const struct osmo_rnc_id *rnc_id); + struct sgsn_ra_cell *sgsn_ra_get_cell_by_cgi_ps(const struct osmo_cell_global_id_ps *cgi_ps); struct sgsn_ra_cell *sgsn_ra_get_cell_by_lai(const struct osmo_location_area_id *lai, uint16_t cell_id); struct sgsn_ra_cell *sgsn_ra_get_cell_by_cgi(const struct osmo_cell_global_id *cgi); struct sgsn_ra_cell *sgsn_ra_get_cell_by_ra(const struct sgsn_ra *ra, uint16_t cell_id); struct sgsn_ra_cell *sgsn_ra_get_cell_by_gb(uint16_t nsei, uint16_t bvci); + struct sgsn_ra *sgsn_ra_get_ra(const struct osmo_routing_area_id *rai); struct sgsn_ra *sgsn_ra_get_ra_geran(const struct osmo_routing_area_id *rai); - +struct sgsn_ra *sgsn_ra_get_ra_utran(const struct osmo_routing_area_id *rai); /* * return value for callbacks. @@ -125,3 +134,4 @@ /* Page the whole routing area for this mmctx */ int sgsn_ra_geran_page_ra(const struct osmo_routing_area_id *rai, struct sgsn_mm_ctx *mmctx); +int sgsn_ra_utran_page_ra(const struct osmo_routing_area_id *rai, const struct sgsn_mm_ctx *mmctx); diff --git a/src/sgsn/gprs_ranap.c b/src/sgsn/gprs_ranap.c index 3252ee6..2ff7397 100644 --- a/src/sgsn/gprs_ranap.c +++ b/src/sgsn/gprs_ranap.c @@ -38,6 +38,7 @@ #include <osmocom/sgsn/gprs_ranap.h> #include <osmocom/sgsn/gprs_gmm_attach.h> #include <osmocom/sgsn/gprs_mm_state_iu_fsm.h> +#include <osmocom/sgsn/gprs_routing_area.h> #include <osmocom/sgsn/gtp_ggsn.h> #include <osmocom/sgsn/gtp.h> #include <osmocom/sgsn/pdpctx.h> @@ -202,12 +203,24 @@ int sgsn_ranap_iu_event(struct ranap_ue_conn_ctx *ctx, enum ranap_iu_event_type type, void *data) { + struct ranap_iu_event_new_area *new_area; + switch (type) { case RANAP_IU_EVENT_RAB_ASSIGN: case RANAP_IU_EVENT_IU_RELEASE: case RANAP_IU_EVENT_LINK_INVALIDATED: case RANAP_IU_EVENT_SECURITY_MODE_COMPLETE: return sgsn_ranap_iu_event_mmctx(ctx, type, data); + case RANAP_IU_EVENT_NEW_AREA: + /* inform the Routing Area code about a new RA for Iu */ + new_area = data; + + /* Only interesting in Routing Area changes, but not Location Area */ + if (new_area->cell_type != RANAP_IU_NEW_RAC) { + return 0; + } + + return sgsn_ra_utran_register(new_area->u.rai, new_area->rnc_id); default: LOGP(DRANAP, LOGL_NOTICE, "Iu: Unknown event received: type: %d\n", type); return -1; diff --git a/src/sgsn/gprs_routing_area.c b/src/sgsn/gprs_routing_area.c index 40bee05..9a84c02 100644 --- a/src/sgsn/gprs_routing_area.c +++ b/src/sgsn/gprs_routing_area.c @@ -24,6 +24,7 @@ #include <osmocom/core/logging.h> #include <osmocom/core/rate_ctr.h> #include <osmocom/core/utils.h> +#include <osmocom/gsm/gsm23003.h> #include <osmocom/gsm/gsm48.h> #include <osmocom/sgsn/debug.h> #include <osmocom/sgsn/gprs_bssgp.h> @@ -150,6 +151,19 @@ return NULL; } +struct sgsn_ra *sgsn_ra_get_ra_utran(const struct osmo_routing_area_id *ra_id) +{ + struct sgsn_ra *ra = sgsn_ra_get_ra(ra_id); + + if (!ra) + return ra; + + if (ra->ran_type == RA_TYPE_UTRAN_Iu) + return ra; + + return NULL; +} + struct sgsn_ra_cell *sgsn_ra_get_cell_by_gb(uint16_t nsei, uint16_t bvci) { struct sgsn_ra *ra; @@ -390,6 +404,42 @@ sgsn_ra_nsei_failure_ind(nsei); } +/* Register a new UTRAN Routing Area if possible. + * Return 0 on success and < 0 on failure. */ +int sgsn_ra_utran_register(const struct osmo_routing_area_id *rai, const struct osmo_rnc_id *rnc_id) +{ + struct sgsn_ra *ra = sgsn_ra_get_ra(rai); + if (!ra) { + ra = sgsn_ra_alloc(rai, RA_TYPE_UTRAN_Iu); + if (!ra) { + LOGP(DRA, LOGL_ERROR, "Couldn't create new RA for %s ran type %s\n", + osmo_rai_name2(rai), get_value_string(sgsn_ra_ran_type_names, ra->ran_type)); + return -ENOMEM; + } + ra->u.utran.rnc_id = *rnc_id; + } + + if (ra->ran_type == RA_TYPE_UTRAN_Iu) { + if (osmo_rnc_id_cmp(&ra->u.utran.rnc_id, rnc_id) == 0) + return 0; + + char new_rnc_id_name[32]; + osmo_rnc_id_name_buf(new_rnc_id_name, sizeof(new_rnc_id_name), rnc_id); + LOGRA(LOGL_INFO, ra, "RNC Id changed from %s to %s\n", + osmo_rnc_id_name(&ra->u.utran.rnc_id), new_rnc_id_name); + + ra->u.utran.rnc_id = *rnc_id; + return 0; + } else { + LOGRA(LOGL_ERROR, ra, "rejecting new RA of type %s, because already present RA has ran type %s\n", + get_value_string(sgsn_ra_ran_type_names, RA_TYPE_UTRAN_Iu), + get_value_string(sgsn_ra_ran_type_names, ra->ran_type)); + return -ENOENT; + } + + return -ENOENT; +} + int sgsn_ra_geran_page_ra(const struct osmo_routing_area_id *rai, struct sgsn_mm_ctx *mmctx) { struct sgsn_ra *ra; @@ -413,6 +463,23 @@ return ret; } +int sgsn_ra_utran_page_ra(const struct osmo_routing_area_id *ra_id, const struct sgsn_mm_ctx *mmctx) +{ + struct sgsn_ra *ra; + rate_ctr_inc(rate_ctr_group_get_ctr(mmctx->ctrg, GMM_CTR_PAGING_PS)); + + ra = sgsn_ra_get_ra_utran(ra_id); + if (!ra) + return -ENOENT; + + if (mmctx->p_tmsi != GSM_RESERVED_TMSI) + return ranap_iu_page_ps2(mmctx->imsi, &mmctx->p_tmsi, ra_id); + else if (mmctx->p_tmsi_old != GSM_RESERVED_TMSI) + return ranap_iu_page_ps2(mmctx->imsi, &mmctx->p_tmsi_old, ra_id); + else + return ranap_iu_page_ps2(mmctx->imsi, NULL, ra_id); +} + void sgsn_ra_init(struct sgsn_instance *inst) { inst->routing_area = talloc_zero(inst, struct sgsn_ra_global); -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40813?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: I1b1aedd2a7c358bd388aa3d8a9f3c6a0011b4889 Gerrit-Change-Number: 40813 Gerrit-PatchSet: 1 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu>

2 weeks, 2 days

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[XL] Change in osmo-sgsn[master]: Adopt iu_client from osmo-iuh

by lynxis lazus

lynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/40812?usp=email ) Change subject: Adopt iu_client from osmo-iuh ...................................................................... Adopt iu_client from osmo-iuh iu_client was original written to have an abstraction for Iu. However the MSC stopped using iu_client a long time ago because the abstraption didn't fit well. There was never time to rewrite SGSN to direct talk RANAP using the primitives. Adopt iu_client for now, but with the plan to rewrite it in a similar way as osmo-msc is doing IuCS. Adopted from osmo-iuh: a8a0564be729("iu_client: Initial N-PCSTATE.ind support"). Change-Id: I9c0d9667ddcb57b52eae34da942acfc1688c1418 --- M include/osmocom/sgsn/Makefile.am A include/osmocom/sgsn/iu_client.h M src/sgsn/Makefile.am A src/sgsn/iu_client.c A src/sgsn/iu_client_vty.c 5 files changed, 1,479 insertions(+), 1 deletion(-) git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/12/40812/1 diff --git a/include/osmocom/sgsn/Makefile.am b/include/osmocom/sgsn/Makefile.am index 270ac7d..6119640 100644 --- a/include/osmocom/sgsn/Makefile.am +++ b/include/osmocom/sgsn/Makefile.am @@ -27,6 +27,7 @@ gtp.h \ gtp_ggsn.h \ gtp_mme.h \ + iu_client.h \ mmctx.h \ pdpctx.h \ sgsn.h \ diff --git a/include/osmocom/sgsn/iu_client.h b/include/osmocom/sgsn/iu_client.h new file mode 100644 index 0000000..465a17d --- /dev/null +++ b/include/osmocom/sgsn/iu_client.h @@ -0,0 +1,112 @@ +#pragma once + +#include <stdbool.h> + +#include <osmocom/core/defs.h> +#include <osmocom/core/linuxlist.h> +#include <osmocom/gsm/gsm48.h> +#include <osmocom/sigtran/sccp_sap.h> + +struct msgb; +struct osmo_auth_vector; + +struct RANAP_RAB_SetupOrModifiedItemIEs_s; +struct RANAP_Cause; + +struct ranap_iu_rnc; + +/* Debugging switches from asn1c and osmo-iuh */ +extern int asn_debug; +extern int asn1_xer_print; + +enum ranap_nsap_addr_enc { + RANAP_NSAP_ADDR_ENC_X213, + RANAP_NSAP_ADDR_ENC_V4RAW, +}; + +struct ranap_ue_conn_ctx { + struct llist_head list; + struct ranap_iu_rnc *rnc; + uint32_t conn_id; + int integrity_active; + struct gprs_ra_id ra_id; + enum ranap_nsap_addr_enc rab_assign_addr_enc; + bool notification; /* send notification to the upstream user */ + /* if true the ue_ctx will be free on Iu release complete */ + bool free_on_release; + /* Will be set when the Iu Release Command has been sent */ + struct osmo_timer_list release_timeout; +}; + +enum ranap_iu_event_new_area_type { + RANAP_IU_NEW_LAC, + RANAP_IU_NEW_RAC, +}; + +struct ranap_iu_event_new_area { + const struct osmo_rnc_id *rnc_id; + enum ranap_iu_event_new_area_type cell_type; + union { + const struct osmo_location_area_id *lai; + const struct osmo_routing_area_id *rai; + } u; +}; + +enum ranap_iu_event_type { + RANAP_IU_EVENT_RAB_ASSIGN, + RANAP_IU_EVENT_SECURITY_MODE_COMPLETE, + RANAP_IU_EVENT_IU_RELEASE, /* An actual Iu Release message was received */ + RANAP_IU_EVENT_LINK_INVALIDATED, /* A SUA link was lost or closed down */ + RANAP_IU_EVENT_NEW_AREA, /* Either a new LAC/RAC has been detected */ +}; + +extern const struct value_string ranap_iu_event_type_names[]; +static inline const char *ranap_iu_event_type_str(enum ranap_iu_event_type e) +{ + return get_value_string(ranap_iu_event_type_names, e); +} + +/* Implementations of iu_recv_cb_t shall find the ranap_ue_conn_ctx in msg->dst. */ +typedef int (* ranap_iu_recv_cb_t )(struct msgb *msg, struct gprs_ra_id *ra_id, + uint16_t *sai); + +typedef int (* ranap_iu_event_cb_t )(struct ranap_ue_conn_ctx *ue_ctx, + enum ranap_iu_event_type type, void *data); + +typedef int (* ranap_iu_rab_ass_resp_cb_t )(struct ranap_ue_conn_ctx *ue_ctx, uint8_t rab_id, + struct RANAP_RAB_SetupOrModifiedItemIEs_s *setup_ies); + +int ranap_iu_init(void *ctx, int log_subsystem, const char *sccp_user_name, struct osmo_sccp_instance *sccp, + ranap_iu_recv_cb_t iu_recv_cb, ranap_iu_event_cb_t iu_event_cb); + +int ranap_iu_tx(struct msgb *msg, uint8_t sapi); + +int ranap_iu_page_cs(const char *imsi, const uint32_t *tmsi, uint16_t lac) + OSMO_DEPRECATED("Use ranap_iu_page_cs2 instead"); + +int ranap_iu_page_ps(const char *imsi, const uint32_t *ptmsi, uint16_t lac, uint8_t rac) + OSMO_DEPRECATED("Use ranap_iu_page_ps2 instead"); + +int ranap_iu_page_cs2(const char *imsi, const uint32_t *tmsi, const struct osmo_location_area_id *lai); +int ranap_iu_page_ps2(const char *imsi, const uint32_t *ptmsi, const struct osmo_routing_area_id *rai); + +int ranap_iu_rab_act(struct ranap_ue_conn_ctx *ue_ctx, struct msgb *msg); +int ranap_iu_rab_deact(struct ranap_ue_conn_ctx *ue_ctx, uint8_t rab_id); +int ranap_iu_tx_sec_mode_cmd(struct ranap_ue_conn_ctx *uectx, struct osmo_auth_vector *vec, + int send_ck, int new_key); +int ranap_iu_tx_common_id(struct ranap_ue_conn_ctx *ue_ctx, const char *imsi); +int ranap_iu_tx_release(struct ranap_ue_conn_ctx *ctx, const struct RANAP_Cause *cause); + +/* Transmit a Iu Release Command and submit event RANAP_IU_EVENT_IU_RELEASE upon + * Release Complete or timeout. Caller is responsible to free the context and + * closing the SCCP connection (ranap_iu_free_ue) upon recieval of the event. */ +void ranap_iu_tx_release_free(struct ranap_ue_conn_ctx *ctx, + const struct RANAP_Cause *cause, + int timeout); + +/* freeing the UE will release all resources + * This will close the SCCP connection connected to the UE */ +void ranap_iu_free_ue(struct ranap_ue_conn_ctx *ue_ctx); + +void ranap_iu_vty_init(int iu_parent_node, enum ranap_nsap_addr_enc *rab_assign_addr_enc); +int ranap_iu_vty_config_write(struct vty *vty, const char *indent); diff --git a/src/sgsn/Makefile.am b/src/sgsn/Makefile.am index 660e490..799a15d 100644 --- a/src/sgsn/Makefile.am +++ b/src/sgsn/Makefile.am @@ -96,6 +96,8 @@ osmo_sgsn_SOURCES += \ gprs_mm_state_iu_fsm.c \ - gprs_ranap.c + gprs_ranap.c \ + iu_client.c \ + iu_client_vty.c endif diff --git a/src/sgsn/iu_client.c b/src/sgsn/iu_client.c new file mode 100644 index 0000000..75be457 --- /dev/null +++ b/src/sgsn/iu_client.c @@ -0,0 +1,1242 @@ +/* Common parts of IuCS and IuPS interfaces implementation */ + +/* (C) 2016-2017 by sysmocom s.f.m.c. GmbH <info(a)sysmocom.de> + * 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 <stdint.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdbool.h> + +#include <asn1c/asn1helpers.h> + +#include <osmocom/gsm/protocol/gsm_04_08_gprs.h> +#include <osmocom/ranap/iu_client.h> + +#include <osmocom/core/logging.h> +#include <osmocom/crypt/auth.h> +#include <osmocom/gprs/gprs_msgb.h> +#include <osmocom/sigtran/sccp_sap.h> +#include <osmocom/sigtran/sccp_helpers.h> +#include <osmocom/ranap/ranap_common_cn.h> +#include <osmocom/ranap/ranap_ies_defs.h> +#include <osmocom/ranap/ranap_msg_factory.h> + +/* Parsed global RNC id. See also struct RANAP_GlobalRNC_ID, and note that the + * PLMN identity is a BCD representation of the MCC and MNC. + * See iu_grnc_id_parse(). */ +struct iu_grnc_id { + struct osmo_plmn_id plmn; + uint16_t rnc_id; +}; + +struct iu_lac_rac_entry { + struct llist_head entry; + + struct osmo_routing_area_id rai; +}; + +/* Entry to cache conn_id <-> sccp_addr mapping in case we receive an empty CR */ +struct iu_new_ctx_entry { + struct llist_head list; + + uint32_t conn_id; + struct osmo_sccp_addr sccp_addr; +}; + +/* A remote RNC (Radio Network Controller, like BSC but for UMTS) that has + * called us and is currently reachable at the given osmo_sccp_addr. So, when we + * know a LAC for a subscriber, we can page it at the RNC matching that LAC or + * RAC. An HNB-GW typically presents itself as if it were a single RNC, even + * though it may have several RNCs in hNodeBs connected to it. Those will then + * share the same RNC id, which they actually receive and adopt from the HNB-GW + * in the HNBAP HNB REGISTER ACCEPT message. */ +struct ranap_iu_rnc { + struct llist_head entry; + + struct osmo_rnc_id rnc_id; + struct osmo_sccp_addr sccp_addr; + + /* A list of struct iu_lac_rac_entry */ + struct llist_head lac_rac_list; +}; + +void *talloc_iu_ctx; +void *talloc_asn1_ctx; + +/* Implement the extern asn_debug from libasn1c to indicate whether to print + * asn.1 debug messages (see libasn1c). */ +int asn_debug = 0; + +/* Implement the extern asn1_xer_print to indicate whether the ASN.1 binary + * code decoded and encoded during Iu communication should be logged to stderr + * (see asn.1 generated code in osmo-iuh). */ +int asn1_xer_print = 0; + +ranap_iu_recv_cb_t global_iu_recv_cb = NULL; +ranap_iu_event_cb_t global_iu_event_cb = NULL; +int iu_log_subsystem = 0; + +#define LOGPIU(level, fmt, args...) \ + LOGP(iu_log_subsystem, level, fmt, ## args) + +#define LOGPIUC(level, fmt, args...) \ + LOGPC(iu_log_subsystem, level, fmt, ## args) + +static LLIST_HEAD(ue_conn_sccp_addr_list); +static LLIST_HEAD(ue_conn_ctx_list); +static LLIST_HEAD(rnc_list); + +static struct osmo_sccp_instance *g_sccp; +static struct osmo_sccp_user *g_scu; +static struct osmo_sccp_addr g_local_sccp_addr; + +/* This rac will be used internally. RAC with 0xff will be rejected */ +#define OSMO_RESERVED_RAC 0xff + +const struct value_string ranap_iu_event_type_names[] = { + OSMO_VALUE_STRING(RANAP_IU_EVENT_RAB_ASSIGN), + OSMO_VALUE_STRING(RANAP_IU_EVENT_SECURITY_MODE_COMPLETE), + OSMO_VALUE_STRING(RANAP_IU_EVENT_IU_RELEASE), + OSMO_VALUE_STRING(RANAP_IU_EVENT_LINK_INVALIDATED), + OSMO_VALUE_STRING(RANAP_IU_EVENT_NEW_AREA), + { 0, NULL } +}; + +static int global_iu_event(struct ranap_ue_conn_ctx *ue_ctx, + enum ranap_iu_event_type type, + void *data) +{ + if (!global_iu_event_cb) + return 0; + + if (ue_ctx && !ue_ctx->notification) + return 0; + + LOGPIU(LOGL_DEBUG, "Submit Iu event to upper layer: %s\n", ranap_iu_event_type_str(type)); + + return global_iu_event_cb(ue_ctx, type, data); +} + +static void global_iu_event_new_area(const struct osmo_rnc_id *rnc_id, const struct osmo_routing_area_id *rai) +{ + struct ranap_iu_event_new_area new_area = (struct ranap_iu_event_new_area) { + .rnc_id = rnc_id, + .cell_type = RANAP_IU_NEW_RAC + }; + + if (rai->rac == OSMO_RESERVED_RAC) { + new_area.cell_type = RANAP_IU_NEW_LAC; + new_area.u.lai = &rai->lac; + } else { + new_area.cell_type = RANAP_IU_NEW_RAC; + new_area.u.rai = rai; + } + + global_iu_event(NULL, RANAP_IU_EVENT_NEW_AREA, &new_area); +} + + +static void ue_conn_ctx_release_timeout_cb(void *ctx_) +{ + struct ranap_ue_conn_ctx *ctx = (struct ranap_ue_conn_ctx *)ctx_; + global_iu_event(ctx, RANAP_IU_EVENT_IU_RELEASE, NULL); +} + +static struct ranap_ue_conn_ctx *ue_conn_ctx_alloc(struct ranap_iu_rnc *rnc, uint32_t conn_id) +{ + struct ranap_ue_conn_ctx *ctx = talloc_zero(talloc_iu_ctx, struct ranap_ue_conn_ctx); + + ctx->rnc = rnc; + ctx->conn_id = conn_id; + ctx->notification = true; + ctx->free_on_release = false; + osmo_timer_setup(&ctx->release_timeout, + ue_conn_ctx_release_timeout_cb, + ctx); + llist_add(&ctx->list, &ue_conn_ctx_list); + + return ctx; +} + +static struct ranap_ue_conn_ctx *ue_conn_ctx_find(uint32_t conn_id) +{ + struct ranap_ue_conn_ctx *ctx; + + llist_for_each_entry(ctx, &ue_conn_ctx_list, list) { + if (ctx->conn_id == conn_id) + return ctx; + } + return NULL; +} + +void ranap_iu_free_ue(struct ranap_ue_conn_ctx *ue_ctx) +{ + if (!ue_ctx) + return; + + osmo_timer_del(&ue_ctx->release_timeout); + osmo_sccp_tx_disconn(g_scu, ue_ctx->conn_id, NULL, 0); + llist_del(&ue_ctx->list); + talloc_free(ue_ctx); +} + +static void ue_conn_sccp_addr_add(uint32_t conn_id, const struct osmo_sccp_addr *calling_addr) +{ + struct iu_new_ctx_entry *entry = talloc_zero(talloc_iu_ctx, struct iu_new_ctx_entry); + + entry->conn_id = conn_id; + entry->sccp_addr = *calling_addr; + + llist_add(&entry->list, &ue_conn_sccp_addr_list); +} + +static const struct osmo_sccp_addr *ue_conn_sccp_addr_find(uint32_t conn_id) +{ + struct iu_new_ctx_entry *entry; + llist_for_each_entry(entry, &ue_conn_sccp_addr_list, list) { + if (entry->conn_id == conn_id) + return &entry->sccp_addr; + } + return NULL; +} + +static void ue_conn_sccp_addr_del(uint32_t conn_id) +{ + struct iu_new_ctx_entry *entry; + llist_for_each_entry(entry, &ue_conn_sccp_addr_list, list) { + if (entry->conn_id == conn_id) { + llist_del(&entry->list); + talloc_free(entry); + return; + } + } +} + +static struct ranap_iu_rnc *iu_rnc_alloc(const struct osmo_rnc_id *rnc_id, struct osmo_sccp_addr *addr) +{ + struct ranap_iu_rnc *rnc = talloc_zero(talloc_iu_ctx, struct ranap_iu_rnc); + OSMO_ASSERT(rnc); + + INIT_LLIST_HEAD(&rnc->lac_rac_list); + + rnc->rnc_id = *rnc_id; + rnc->sccp_addr = *addr; + llist_add(&rnc->entry, &rnc_list); + + LOGPIU(LOGL_NOTICE, "New RNC %s at %s\n", osmo_rnc_id_name(&rnc->rnc_id), osmo_sccp_addr_dump(addr)); + + return rnc; +} + +/* Find a match for the given LAC (and RAC). For CS, pass rac as 0. + * If rnc and lre pointers are not NULL, *rnc / *lre are set to NULL if no match is found, or to the + * match if a match is found. Return true if a match is found. */ +static bool iu_rnc_lac_rac_find(struct ranap_iu_rnc **rnc, struct iu_lac_rac_entry **lre, + const struct osmo_routing_area_id *ra_id) +{ + struct ranap_iu_rnc *r; + struct iu_lac_rac_entry *e; + + if (rnc) + *rnc = NULL; + if (lre) + *lre = NULL; + + llist_for_each_entry(r, &rnc_list, entry) { + llist_for_each_entry(e, &r->lac_rac_list, entry) { + if (!osmo_rai_cmp(&e->rai, ra_id)) { + if (rnc) + *rnc = r; + if (lre) + *lre = e; + return true; + } + } + } + return false; +} + +/* legacy, do a first match with ignoring PLMN */ +static bool iu_rnc_lac_rac_find_legacy(struct ranap_iu_rnc **rnc, struct iu_lac_rac_entry **lre, + uint16_t lac, uint8_t rac) +{ + struct ranap_iu_rnc *r; + struct iu_lac_rac_entry *e; + + if (rnc) + *rnc = NULL; + if (lre) + *lre = NULL; + + llist_for_each_entry(r, &rnc_list, entry) { + llist_for_each_entry(e, &r->lac_rac_list, entry) { + if (e->rai.lac.lac == lac && e->rai.rac == rac) { + if (rnc) + *rnc = r; + if (lre) + *lre = e; + return true; + } + } + } + return false; +} + +static struct ranap_iu_rnc *iu_rnc_id_find(struct osmo_rnc_id *rnc_id) +{ + struct ranap_iu_rnc *rnc; + llist_for_each_entry(rnc, &rnc_list, entry) { + if (!osmo_rnc_id_cmp(&rnc->rnc_id, rnc_id)) + return rnc; + } + return NULL; +} + +static bool same_sccp_addr(struct osmo_sccp_addr *a, struct osmo_sccp_addr *b) +{ + char buf[256]; + osmo_strlcpy(buf, osmo_sccp_addr_dump(a), sizeof(buf)); + return !strcmp(buf, osmo_sccp_addr_dump(b)); +} + +static struct ranap_iu_rnc *iu_rnc_register(struct osmo_rnc_id *rnc_id, + const struct osmo_routing_area_id *rai, + struct osmo_sccp_addr *addr) +{ + struct ranap_iu_rnc *rnc; + struct ranap_iu_rnc *old_rnc; + struct iu_lac_rac_entry *lre; + + /* Make sure we know this rnc_id and that this SCCP address is in our records */ + rnc = iu_rnc_id_find(rnc_id); + + if (rnc) { + if (!same_sccp_addr(&rnc->sccp_addr, addr)) { + LOGPIU(LOGL_NOTICE, "RNC %s changed its SCCP addr to %s (LAC/RAC %s)\n", + osmo_rnc_id_name(rnc_id), osmo_sccp_addr_dump(addr), osmo_rai_name2(rai)); + rnc->sccp_addr = *addr; + } + } else + rnc = iu_rnc_alloc(rnc_id, addr); + + /* Detect whether the LAC,RAC is already recorded in another RNC */ + iu_rnc_lac_rac_find(&old_rnc, &lre, rai); + + if (old_rnc && old_rnc != rnc) { + /* LAC, RAC already exists in a different RNC */ + LOGPIU(LOGL_NOTICE, "LAC/RAC %s moved from RNC %s %s", + osmo_rai_name2(rai), + osmo_rnc_id_name(&old_rnc->rnc_id), osmo_sccp_addr_dump(&old_rnc->sccp_addr)); + LOGPIUC(LOGL_NOTICE, " to RNC %s %s\n", + osmo_rnc_id_name(&rnc->rnc_id), osmo_sccp_addr_dump(&rnc->sccp_addr)); + + llist_del(&lre->entry); + llist_add(&lre->entry, &rnc->lac_rac_list); + global_iu_event_new_area(rnc_id, rai); + } else if (!old_rnc) { + /* LAC, RAC not recorded yet */ + LOGPIU(LOGL_NOTICE, "RNC %s: new LAC/RAC %s\n", osmo_rnc_id_name(rnc_id), osmo_rai_name2(rai)); + lre = talloc_zero(rnc, struct iu_lac_rac_entry); + lre->rai = *rai; + llist_add(&lre->entry, &rnc->lac_rac_list); + global_iu_event_new_area(rnc_id, rai); + } + /* else, LAC,RAC already recorded with the current RNC. */ + + return rnc; +} + +/*********************************************************************** + * RANAP handling + ***********************************************************************/ + +int ranap_iu_rab_act(struct ranap_ue_conn_ctx *ue_ctx, struct msgb *msg) +{ + struct osmo_scu_prim *prim; + + /* wrap RANAP message in SCCP N-DATA.req */ + prim = (struct osmo_scu_prim *) msgb_push(msg, sizeof(*prim)); + prim->u.data.conn_id = ue_ctx->conn_id; + osmo_prim_init(&prim->oph, + SCCP_SAP_USER, + OSMO_SCU_PRIM_N_DATA, + PRIM_OP_REQUEST, + msg); + return osmo_sccp_user_sap_down(g_scu, &prim->oph); +} + +int ranap_iu_rab_deact(struct ranap_ue_conn_ctx *ue_ctx, uint8_t rab_id) +{ + /* FIXME */ + return -1; +} + +int ranap_iu_tx_sec_mode_cmd(struct ranap_ue_conn_ctx *uectx, struct osmo_auth_vector *vec, + int send_ck, int new_key) +{ + struct osmo_scu_prim *prim; + struct msgb *msg; + + /* create RANAP message */ + msg = ranap_new_msg_sec_mod_cmd(vec->ik, send_ck? vec->ck : NULL, + new_key ? RANAP_KeyStatus_new : RANAP_KeyStatus_old); + msg->l2h = msg->data; + /* wrap RANAP message in SCCP N-DATA.req */ + prim = (struct osmo_scu_prim *) msgb_push(msg, sizeof(*prim)); + prim->u.data.conn_id = uectx->conn_id; + osmo_prim_init(&prim->oph, SCCP_SAP_USER, + OSMO_SCU_PRIM_N_DATA, + PRIM_OP_REQUEST, msg); + return osmo_sccp_user_sap_down(g_scu, &prim->oph); +} + +int ranap_iu_tx_common_id(struct ranap_ue_conn_ctx *uectx, const char *imsi) +{ + struct msgb *msg; + struct osmo_scu_prim *prim; + + LOGPIU(LOGL_INFO, "Transmitting RANAP CommonID (SCCP conn_id %u)\n", + uectx->conn_id); + + msg = ranap_new_msg_common_id(imsi); + msg->l2h = msg->data; + prim = (struct osmo_scu_prim *) msgb_push(msg, sizeof(*prim)); + prim->u.data.conn_id = uectx->conn_id; + osmo_prim_init(&prim->oph, SCCP_SAP_USER, + OSMO_SCU_PRIM_N_DATA, + PRIM_OP_REQUEST, msg); + return osmo_sccp_user_sap_down(g_scu, &prim->oph); +} + +static int iu_grnc_id_parse(struct osmo_rnc_id *dst, struct RANAP_GlobalRNC_ID *src) +{ + /* The size is coming from arbitrary sender, check it gracefully */ + if (src->pLMNidentity.size != 3) { + LOGPIU(LOGL_ERROR, "Invalid PLMN Identity size:" + " should be 3, is %d\n", src->pLMNidentity.size); + return -1; + } + osmo_plmn_from_bcd(&src->pLMNidentity.buf[0], &dst->plmn); + dst->rnc_id = (uint16_t)src->rNC_ID; + return 0; +} + +#if 0 + -- not used at present -- +static int iu_grnc_id_compose(struct iu_grnc_id *src, struct RANAP_GlobalRNC_ID *dst) +{ + /* The caller must ensure proper size */ + OSMO_ASSERT(dst->pLMNidentity.size == 3); + gsm48_mcc_mnc_to_bcd(&dst->pLMNidentity.buf[0], + src->mcc, src->mnc); + dst->rNC_ID = src->rnc_id; + return 0; +} +#endif + +struct new_ue_conn_ctx { + struct osmo_sccp_addr sccp_addr; + uint32_t conn_id; +}; + +static int ranap_handle_co_initial_ue(void *ctx, RANAP_InitialUE_MessageIEs_t *ies) +{ + struct new_ue_conn_ctx *new_ctx = ctx; + struct gprs_ra_id ra_id = {}; + struct osmo_routing_area_id ra_id2 = {}; + struct osmo_rnc_id rnc_id = {}; + uint16_t sai; + struct ranap_ue_conn_ctx *ue; + struct msgb *msg = msgb_alloc(256, "RANAP->NAS"); + struct ranap_iu_rnc *rnc; + + if (ranap_parse_lai(&ra_id, &ies->lai) != 0) { + LOGPIU(LOGL_ERROR, "Failed to parse RANAP LAI IE\n"); + return -1; + } + + if (ies->presenceMask & INITIALUE_MESSAGEIES_RANAP_RAC_PRESENT) { + ra_id.rac = asn1str_to_u8(&ies->rac); + if (ra_id.rac == OSMO_RESERVED_RAC) { + LOGPIU(LOGL_ERROR, + "Rejecting RNC with invalid/internally used RAC 0x%02x\n", ra_id.rac); + return -1; + } + } else { + ra_id.rac = OSMO_RESERVED_RAC; + } + + if (iu_grnc_id_parse(&rnc_id, &ies->globalRNC_ID) != 0) { + LOGPIU(LOGL_ERROR, + "Failed to parse RANAP Global-RNC-ID IE\n"); + return -1; + } + + sai = asn1str_to_u16(&ies->sai.sAC); + msgb_gmmh(msg) = msgb_put(msg, ies->nas_pdu.size); + memcpy(msgb_gmmh(msg), ies->nas_pdu.buf, ies->nas_pdu.size); + + gprs_rai_to_osmo(&ra_id2, &ra_id); + + /* Make sure we know the RNC Id and LAC+RAC coming in on this connection. */ + rnc = iu_rnc_register(&rnc_id, &ra_id2, &new_ctx->sccp_addr); + + ue = ue_conn_ctx_alloc(rnc, new_ctx->conn_id); + OSMO_ASSERT(ue); + ue->ra_id = ra_id; + + /* Feed into the MM layer */ + msg->dst = ue; + global_iu_recv_cb(msg, &ra_id, &sai); + + msgb_free(msg); + + return 0; +} + +static int ranap_handle_co_dt(void *ctx, RANAP_DirectTransferIEs_t *ies) +{ + struct gprs_ra_id _ra_id, *ra_id = NULL; + uint16_t _sai, *sai = NULL; + struct msgb *msg = msgb_alloc(256, "RANAP->NAS"); + + if (ies->presenceMask & DIRECTTRANSFERIES_RANAP_LAI_PRESENT) { + if (ranap_parse_lai(&_ra_id, &ies->lai) != 0) { + LOGPIU(LOGL_ERROR, "Failed to parse RANAP LAI IE\n"); + return -1; + } + ra_id = &_ra_id; + if (ies->presenceMask & DIRECTTRANSFERIES_RANAP_RAC_PRESENT) { + _ra_id.rac = asn1str_to_u8(&ies->rac); + } + if (ies->presenceMask & DIRECTTRANSFERIES_RANAP_SAI_PRESENT) { + _sai = asn1str_to_u16(&ies->sai.sAC); + sai = &_sai; + } + } + + msgb_gmmh(msg) = msgb_put(msg, ies->nas_pdu.size); + memcpy(msgb_gmmh(msg), ies->nas_pdu.buf, ies->nas_pdu.size); + + /* Feed into the MM/CC/SMS-CP layer */ + msg->dst = ctx; + global_iu_recv_cb(msg, ra_id, sai); + + msgb_free(msg); + + return 0; +} + +static int ranap_handle_co_err_ind(void *ctx, RANAP_ErrorIndicationIEs_t *ies) +{ + if (ies->presenceMask & ERRORINDICATIONIES_RANAP_CAUSE_PRESENT) + LOGPIU(LOGL_ERROR, "Rx Error Indication (%s)\n", + ranap_cause_str(&ies->cause)); + else + LOGPIU(LOGL_ERROR, "Rx Error Indication\n"); + + return 0; +} + +int ranap_iu_tx(struct msgb *msg_nas, uint8_t sapi) +{ + struct ranap_ue_conn_ctx *uectx = msg_nas->dst; + struct msgb *msg; + struct osmo_scu_prim *prim; + + if (!uectx) { + LOGPIU(LOGL_ERROR, "Discarding to-be-transmitted L3 Message as RANAP DT with unset dst SCCP conn_id!\n"); + return -ENOTCONN; + } + + LOGPIU(LOGL_INFO, "Transmitting L3 Message as RANAP DT (SCCP conn_id %u)\n", + uectx->conn_id); + + msg = ranap_new_msg_dt(sapi, msg_nas->data, msgb_length(msg_nas)); + msgb_free(msg_nas); + msg->l2h = msg->data; + prim = (struct osmo_scu_prim *) msgb_push(msg, sizeof(*prim)); + prim->u.data.conn_id = uectx->conn_id; + osmo_prim_init(&prim->oph, SCCP_SAP_USER, + OSMO_SCU_PRIM_N_DATA, + PRIM_OP_REQUEST, msg); + return osmo_sccp_user_sap_down(g_scu, &prim->oph); +} + +/* Send Iu Release for the given UE connection. + * If cause is NULL, Normal Release cause is sent, otherwise + * the provided cause. */ +int ranap_iu_tx_release(struct ranap_ue_conn_ctx *ctx, const struct RANAP_Cause *cause) +{ + struct msgb *msg; + struct osmo_scu_prim *prim; + static const struct RANAP_Cause default_cause = { + .present = RANAP_Cause_PR_nAS, + .choice.radioNetwork = RANAP_CauseNAS_normal_release, + }; + + if (!cause) + cause = &default_cause; + + msg = ranap_new_msg_iu_rel_cmd(cause); + msg->l2h = msg->data; + prim = (struct osmo_scu_prim *) msgb_push(msg, sizeof(*prim)); + prim->u.data.conn_id = ctx->conn_id; + osmo_prim_init(&prim->oph, SCCP_SAP_USER, + OSMO_SCU_PRIM_N_DATA, + PRIM_OP_REQUEST, msg); + return osmo_sccp_user_sap_down(g_scu, &prim->oph); +} + +void ranap_iu_tx_release_free(struct ranap_ue_conn_ctx *ctx, + const struct RANAP_Cause *cause, + int timeout) +{ + ctx->notification = false; + ctx->free_on_release = true; + int ret = ranap_iu_tx_release(ctx, cause); + /* On Tx failure, trigger timeout immediately, as the response will never arrive */ + if (ret) + timeout = 0; + + osmo_timer_schedule(&ctx->release_timeout, timeout, 0); +} + +static int ranap_handle_co_iu_rel_req(struct ranap_ue_conn_ctx *ctx, RANAP_Iu_ReleaseRequestIEs_t *ies) +{ + LOGPIU(LOGL_INFO, "Received Iu Release Request, Sending Release Command\n"); + ranap_iu_tx_release(ctx, &ies->cause); + return 0; +} + +static int ranap_handle_co_rab_ass_resp(struct ranap_ue_conn_ctx *ctx, RANAP_RAB_AssignmentResponseIEs_t *ies) +{ + int rc = -1; + + LOGPIU(LOGL_INFO, + "Rx RAB Assignment Response for UE conn_id %u\n", ctx->conn_id); + if (ies->presenceMask & RAB_ASSIGNMENTRESPONSEIES_RANAP_RAB_SETUPORMODIFIEDLIST_PRESENT) { + /* TODO: Iterate over list of SetupOrModifiedList IEs and handle each one */ + RANAP_IE_t *ranap_ie = ies->raB_SetupOrModifiedList.raB_SetupOrModifiedList_ies.list.array[0]; + RANAP_RAB_SetupOrModifiedItemIEs_t setup_ies; + + rc = ranap_decode_rab_setupormodifieditemies_fromlist(&setup_ies, &ranap_ie->value); + if (rc) { + LOGPIU(LOGL_ERROR, "Error in ranap_decode_rab_setupormodifieditemies()\n"); + return rc; + } + + rc = global_iu_event(ctx, RANAP_IU_EVENT_RAB_ASSIGN, &setup_ies); + + ranap_free_rab_setupormodifieditemies(&setup_ies); + } + /* FIXME: handle RAB Ass failure? */ + + return rc; +} + +static void cn_ranap_handle_co_initial(void *ctx, ranap_message *message) +{ + int rc; + + LOGPIU(LOGL_NOTICE, "handle_co_initial(dir=%u, proc=%u)\n", message->direction, message->procedureCode); + + if (message->direction != RANAP_RANAP_PDU_PR_initiatingMessage + || message->procedureCode != RANAP_ProcedureCode_id_InitialUE_Message) { + LOGPIU(LOGL_ERROR, "Expected direction 'InitiatingMessage'," + " procedureCode 'InitialUE_Message', instead got %u and %u\n", + message->direction, message->procedureCode); + rc = -1; + } + else + rc = ranap_handle_co_initial_ue(ctx, &message->msg.initialUE_MessageIEs); + + if (rc) { + LOGPIU(LOGL_ERROR, "Error in %s (%d)\n", __func__, rc); + /* TODO handling of the error? */ + } +} + +/* Entry point for connection-oriented RANAP message */ +static void cn_ranap_handle_co(void *ctx, ranap_message *message) +{ + int rc; + + LOGPIU(LOGL_NOTICE, "handle_co(dir=%u, proc=%u)\n", message->direction, message->procedureCode); + + switch (message->direction) { + case RANAP_RANAP_PDU_PR_initiatingMessage: + switch (message->procedureCode) { + case RANAP_ProcedureCode_id_InitialUE_Message: + LOGPIU(LOGL_ERROR, "Got InitialUE_Message but this is not a new conn\n"); + rc = -1; + break; + case RANAP_ProcedureCode_id_DirectTransfer: + rc = ranap_handle_co_dt(ctx, &message->msg.directTransferIEs); + break; + case RANAP_ProcedureCode_id_ErrorIndication: + rc = ranap_handle_co_err_ind(ctx, &message->msg.errorIndicationIEs); + break; + case RANAP_ProcedureCode_id_Iu_ReleaseRequest: + /* Iu Release Request */ + rc = ranap_handle_co_iu_rel_req(ctx, &message->msg.iu_ReleaseRequestIEs); + break; + default: + LOGPIU(LOGL_ERROR, "Received Initiating Message: unknown Procedure Code %d\n", + message->procedureCode); + rc = -1; + break; + } + break; + case RANAP_RANAP_PDU_PR_successfulOutcome: + switch (message->procedureCode) { + case RANAP_ProcedureCode_id_SecurityModeControl: + /* Security Mode Complete */ + rc = global_iu_event(ctx, RANAP_IU_EVENT_SECURITY_MODE_COMPLETE, NULL); + break; + case RANAP_ProcedureCode_id_Iu_Release: + /* Iu Release Complete */ + rc = global_iu_event(ctx, RANAP_IU_EVENT_IU_RELEASE, NULL); + if (rc) { + LOGPIU(LOGL_ERROR, "Iu Release event: Iu Event callback returned %d\n", + rc); + } + break; + default: + LOGPIU(LOGL_ERROR, "Received Successful Outcome: unknown Procedure Code %d\n", + message->procedureCode); + rc = -1; + break; + } + break; + case RANAP_RANAP_PDU_PR_outcome: + switch (message->procedureCode) { + case RANAP_ProcedureCode_id_RAB_Assignment: + /* RAB Assignment Response */ + rc = ranap_handle_co_rab_ass_resp(ctx, &message->msg.raB_AssignmentResponseIEs); + break; + default: + LOGPIU(LOGL_ERROR, "Received Outcome: unknown Procedure Code %d\n", + message->procedureCode); + rc = -1; + break; + } + break; + case RANAP_RANAP_PDU_PR_unsuccessfulOutcome: + default: + LOGPIU(LOGL_ERROR, "Received Unsuccessful Outcome: Procedure Code %d\n", + message->procedureCode); + rc = -1; + break; + } + + if (rc) { + LOGPIU(LOGL_ERROR, "Error in %s (%d)\n", __func__, rc); + /* TODO handling of the error? */ + } +} + +static int ranap_handle_cl_reset_req(void *ctx, RANAP_ResetIEs_t *ies) +{ + struct osmo_scu_prim *prim = (struct osmo_scu_prim *) ctx; + struct osmo_scu_unitdata_param *ud_prim = &prim->u.unitdata; + RANAP_GlobalRNC_ID_t *grnc_id = NULL; + struct msgb *resp; + + OSMO_ASSERT(prim->oph.primitive == OSMO_SCU_PRIM_N_UNITDATA); + + /* FIXME: verify ies.cN_DomainIndicator */ + + if (ies->presenceMask & RESETIES_RANAP_GLOBALRNC_ID_PRESENT) + grnc_id = &ies->globalRNC_ID; + + /* send reset response */ + resp = ranap_new_msg_reset_ack(ies->cN_DomainIndicator, grnc_id); + if (!resp) + return -ENOMEM; + resp->l2h = resp->data; + return osmo_sccp_tx_unitdata_msg(g_scu, &g_local_sccp_addr, &ud_prim->calling_addr, resp); +} + +static int ranap_handle_cl_err_ind(void *ctx, RANAP_ErrorIndicationIEs_t *ies) +{ + if (ies->presenceMask & ERRORINDICATIONIES_RANAP_CAUSE_PRESENT) + LOGPIU(LOGL_ERROR, "Rx Error Indication (%s)\n", + ranap_cause_str(&ies->cause)); + else + LOGPIU(LOGL_ERROR, "Rx Error Indication\n"); + + return 0; +} + +/* Entry point for connection-less RANAP message */ +static void cn_ranap_handle_cl(void *ctx, ranap_message *message) +{ + int rc; + + switch (message->direction) { + case RANAP_RANAP_PDU_PR_initiatingMessage: + switch (message->procedureCode) { + case RANAP_ProcedureCode_id_Reset: + /* received reset.req, send reset.resp */ + rc = ranap_handle_cl_reset_req(ctx, &message->msg.resetIEs); + break; + case RANAP_ProcedureCode_id_ErrorIndication: + rc = ranap_handle_cl_err_ind(ctx, &message->msg.errorIndicationIEs); + break; + default: + rc = -1; + break; + } + break; + case RANAP_RANAP_PDU_PR_successfulOutcome: + case RANAP_RANAP_PDU_PR_unsuccessfulOutcome: + case RANAP_RANAP_PDU_PR_outcome: + default: + rc = -1; + break; + } + + if (rc) { + LOGPIU(LOGL_ERROR, "Error in %s (%d)\n", __func__, rc); + /* TODO handling of the error? */ + } +} + +/*********************************************************************** + * Paging + ***********************************************************************/ + +/* Send a paging command down a given SCCP User. tmsi and paging_cause are + * optional and may be passed NULL and 0, respectively, to disable their use. + * See enum RANAP_PagingCause. + * + * If TMSI is given, the IMSI is not sent over the air interface. Nevertheless, + * the IMSI is still required for resolution in the HNB-GW and/or(?) RNC. */ +static int iu_tx_paging_cmd(struct osmo_sccp_addr *called_addr, + const char *imsi, const uint32_t *tmsi, + bool is_ps, uint32_t paging_cause) +{ + struct msgb *msg; + msg = ranap_new_msg_paging_cmd(imsi, tmsi, is_ps ? 1 : 0, paging_cause); + msg->l2h = msg->data; + return osmo_sccp_tx_unitdata_msg(g_scu, &g_local_sccp_addr, called_addr, msg); +} + +static int iu_page(const char *imsi, const uint32_t *tmsi_or_ptmsi, + uint16_t lac, uint8_t rac, bool is_ps) +{ + struct ranap_iu_rnc *rnc; + const char *log_msg; + int log_level; + int paged = 0; + + iu_rnc_lac_rac_find_legacy(&rnc, NULL, lac, rac); + if (rnc) { + if (iu_tx_paging_cmd(&rnc->sccp_addr, imsi, tmsi_or_ptmsi, is_ps, 0) == 0) { + log_msg = "Paging"; + log_level = LOGL_DEBUG; + paged = 1; + } else { + log_msg = "Paging failed"; + log_level = LOGL_ERROR; + } + } else { + log_msg = "Found no RNC to Page"; + log_level = LOGL_ERROR; + } + + if (is_ps) + LOGPIU(log_level, "IuPS: %s on LAC %d RAC %d", log_msg, lac, rac); + else + LOGPIU(log_level, "IuCS: %s on LAC %d", log_msg, lac); + if (rnc) + LOGPIUC(log_level, " at SCCP-addr %s", osmo_sccp_addr_dump(&rnc->sccp_addr)); + if (tmsi_or_ptmsi) + LOGPIUC(log_level, ", for %s %08x\n", is_ps? "PTMSI" : "TMSI", *tmsi_or_ptmsi); + else + LOGPIUC(log_level, ", for IMSI %s\n", imsi); + + return paged; +} + +/*! Old paging() doesn't use PLMN and transmit paging command only to the first RNC */ +int ranap_iu_page_cs(const char *imsi, const uint32_t *tmsi, uint16_t lac) +{ + return iu_page(imsi, tmsi, lac, 0, false); +} + +/*! Old paging() doesn't use PLMN and transmit paging command only to the first RNC */ +int ranap_iu_page_ps(const char *imsi, const uint32_t *ptmsi, uint16_t lac, uint8_t rac) +{ + return iu_page(imsi, ptmsi, lac, rac, true); +} + +/*! Transmit a single page request towards all RNCs serving the specific LAI (no page retransmission). + * + * \param imsi the imsi as human readable string + * \param tmsi NULL or pointer to the tmsi + * \param lai full Location Area Identifier + * \return amount of paged RNCs. 0 when no RNC found. + */ +int ranap_iu_page_cs2(const char *imsi, const uint32_t *tmsi, const struct osmo_location_area_id *lai) +{ + struct ranap_iu_rnc *rnc; + struct iu_lac_rac_entry *entry; + char log_msg[32] = {}; + int paged = 0; + int rc = 0; + + /* find all RNCs which are serving this LA */ + llist_for_each_entry(rnc, &rnc_list, entry) { + llist_for_each_entry(entry, &rnc->lac_rac_list, entry) { + if (osmo_lai_cmp(&entry->rai.lac, lai)) + continue; + + rc = iu_tx_paging_cmd(&rnc->sccp_addr, imsi, tmsi, false, 0); + if (rc > 0) { + LOGPIU(LOGL_ERROR, "IuCS: Failed to tx Paging RNC %s for LAC %s for IMSI %s / TMSI %08x", + osmo_rnc_id_name(&rnc->rnc_id), + osmo_lai_name(lai), imsi, tmsi ? *tmsi : GSM_RESERVED_TMSI); + } + paged++; + break; + } + } + + if (tmsi) + snprintf(log_msg, sizeof(log_msg), "for TMSI %08x\n", *tmsi); + else + snprintf(log_msg, sizeof(log_msg) - 1, "for IMSI %s\n", imsi); + + if (paged) + LOGPIU(LOGL_DEBUG, "IuPS: Paged %d RNCs on LAI %s for %s", paged, osmo_lai_name(lai), log_msg); + else + LOGPIU(LOGL_INFO, "IuPS: Found no RNC to Page on LAI %s for %s", osmo_lai_name(lai), log_msg); + + + return paged; +} + +/*! Transmit a single page request towards all RNCs serving the specific RAI (no page retransmission). + * + * \param imsi the imsi as human readable string + * \param ptmsi NULL or pointer to the tmsi + * \param rai full Location Area Identifier + * \return amount of paged RNCs. 0 when no RNC found. + */ +int ranap_iu_page_ps2(const char *imsi, const uint32_t *ptmsi, const struct osmo_routing_area_id *rai) +{ + struct ranap_iu_rnc *rnc; + struct iu_lac_rac_entry *entry; + char log_msg[32] = {}; + int paged = 0; + int rc = 0; + + /* find all RNCs which are serving this RAC */ + llist_for_each_entry(rnc, &rnc_list, entry) { + llist_for_each_entry(entry, &rnc->lac_rac_list, entry) { + if (osmo_rai_cmp(&entry->rai, rai)) + continue; + + rc = iu_tx_paging_cmd(&rnc->sccp_addr, imsi, ptmsi, true, 0); + if (rc > 0) { + LOGPIU(LOGL_ERROR, "IuPS: Failed to tx Paging RNC %s for RAC %s for IMSI %s / P-TMSI %08x", + osmo_rnc_id_name(&rnc->rnc_id), + osmo_rai_name2(rai), imsi, ptmsi ? *ptmsi : GSM_RESERVED_TMSI); + } + paged++; + break; + } + } + + if (ptmsi) + snprintf(log_msg, sizeof(log_msg) - 1, "for PTMSI %08x\n", *ptmsi); + else + snprintf(log_msg, sizeof(log_msg) - 1, "for IMSI %s\n", imsi); + + if (paged) + LOGPIU(LOGL_DEBUG, "IuPS: Paged %d RNCs on RAI %s for %s", paged, osmo_rai_name2(rai), log_msg); + else + LOGPIU(LOGL_INFO, "IuPS: Found no RNC to Page on RAI %s for %s", osmo_rai_name2(rai), log_msg); + + return paged; +} + +/*********************************************************************** + * + ***********************************************************************/ + +int tx_unitdata(struct osmo_sccp_user *scu); +int tx_conn_req(struct osmo_sccp_user *scu, uint32_t conn_id); + +struct osmo_prim_hdr *make_conn_req(uint32_t conn_id); +struct osmo_prim_hdr *make_dt1_req(uint32_t conn_id, const uint8_t *data, unsigned int len); + +static struct osmo_prim_hdr *make_conn_resp(struct osmo_scu_connect_param *param) +{ + struct msgb *msg = msgb_alloc(1024, "conn_resp"); + struct osmo_scu_prim *prim; + + prim = (struct osmo_scu_prim *) msgb_put(msg, sizeof(*prim)); + osmo_prim_init(&prim->oph, SCCP_SAP_USER, + OSMO_SCU_PRIM_N_CONNECT, + PRIM_OP_RESPONSE, msg); + memcpy(&prim->u.connect, param, sizeof(prim->u.connect)); + return &prim->oph; +} + +static void ue_ctx_link_invalidated_free(struct ranap_ue_conn_ctx *ue) +{ + uint32_t conn_id = ue->conn_id; + global_iu_event(ue, RANAP_IU_EVENT_LINK_INVALIDATED, NULL); + + /* A RANAP_IU_EVENT_LINK_INVALIDATED, can lead to a free */ + ue = ue_conn_ctx_find(conn_id); + if (!ue) + return; + if (ue->free_on_release) + ranap_iu_free_ue(ue); +} + +static void handle_pcstate_ind(struct osmo_ss7_instance *cs7, const struct osmo_scu_pcstate_param *pcst) +{ + struct osmo_sccp_addr rem_addr; + struct ranap_iu_rnc *rnc; + bool connected; + bool disconnected; + + LOGPIU(LOGL_DEBUG, "N-PCSTATE ind: affected_pc=%u=%s sp_status=%s remote_sccp_status=%s\n", + pcst->affected_pc, osmo_ss7_pointcode_print(cs7, pcst->affected_pc), + osmo_sccp_sp_status_name(pcst->sp_status), + osmo_sccp_rem_sccp_status_name(pcst->remote_sccp_status)); + + osmo_sccp_make_addr_pc_ssn(&rem_addr, pcst->affected_pc, OSMO_SCCP_SSN_RANAP); + + /* See if this marks the point code to have become available, or to have been lost. + * + * I want to detect two events: + * - connection event (both indicators say PC is reachable). + * - disconnection event (at least one indicator says the PC is not reachable). + * + * There are two separate incoming indicators with various possible values -- the incoming events can be: + * + * - neither connection nor disconnection indicated -- just indicating congestion + * connected == false, disconnected == false --> do nothing. + * - both incoming values indicate that we are connected + * --> trigger connected + * - both indicate we are disconnected + * --> trigger disconnected + * - one value indicates 'connected', the other indicates 'disconnected' + * --> trigger disconnected + * + * Congestion could imply that we're connected, but it does not indicate + * that a PC's reachability changed, so no need to trigger on that. + */ + connected = false; + disconnected = false; + + switch (pcst->sp_status) { + case OSMO_SCCP_SP_S_ACCESSIBLE: + connected = true; + break; + case OSMO_SCCP_SP_S_INACCESSIBLE: + disconnected = true; + break; + default: + case OSMO_SCCP_SP_S_CONGESTED: + /* Neither connecting nor disconnecting */ + break; + } + + switch (pcst->remote_sccp_status) { + case OSMO_SCCP_REM_SCCP_S_AVAILABLE: + if (!disconnected) + connected = true; + break; + case OSMO_SCCP_REM_SCCP_S_UNAVAILABLE_UNKNOWN: + case OSMO_SCCP_REM_SCCP_S_UNEQUIPPED: + case OSMO_SCCP_REM_SCCP_S_INACCESSIBLE: + disconnected = true; + connected = false; + break; + default: + case OSMO_SCCP_REM_SCCP_S_CONGESTED: + /* Neither connecting nor disconnecting */ + break; + } + + if (disconnected) { + /* A previously usable RNC has disconnected. Signal to user that all related ue_ctx are invalid. */ + llist_for_each_entry(rnc, &rnc_list, entry) { + struct ranap_ue_conn_ctx *ue_ctx, *ue_ctx_tmp; + if (osmo_sccp_addr_cmp(&rnc->sccp_addr, &rem_addr, OSMO_SCCP_ADDR_T_SSN | OSMO_SCCP_ADDR_T_PC)) + continue; + LOGPIU(LOGL_NOTICE, + "RNC %s now unreachable: N-PCSTATE ind: pc=%u=%s sp_status=%s remote_sccp_status=%s\n", + osmo_rnc_id_name(&rnc->rnc_id), + pcst->affected_pc, osmo_ss7_pointcode_print(cs7, pcst->affected_pc), + osmo_sccp_sp_status_name(pcst->sp_status), + osmo_sccp_rem_sccp_status_name(pcst->remote_sccp_status)); + llist_for_each_entry_safe(ue_ctx, ue_ctx_tmp, &ue_conn_ctx_list, list) { + if (ue_ctx->rnc != rnc) + continue; + ue_ctx_link_invalidated_free(ue_ctx); + } + /* TODO: ideally we'd have some event to submit to upper + * layer to inform about peer availability change... */ + } + } else if (connected) { + llist_for_each_entry(rnc, &rnc_list, entry) { + if (osmo_sccp_addr_cmp(&rnc->sccp_addr, &rem_addr, OSMO_SCCP_ADDR_T_SSN | OSMO_SCCP_ADDR_T_PC)) + continue; + LOGPIU(LOGL_NOTICE, + "RNC %s now available: N-PCSTATE ind: pc=%u=%s sp_status=%s remote_sccp_status=%s\n", + osmo_rnc_id_name(&rnc->rnc_id), + pcst->affected_pc, osmo_ss7_pointcode_print(cs7, pcst->affected_pc), + osmo_sccp_sp_status_name(pcst->sp_status), + osmo_sccp_rem_sccp_status_name(pcst->remote_sccp_status)); + /* TODO: ideally we'd have some event to submit to upper + * layer to inform about peer availability change... */ + } + } +} + +static int sccp_sap_up(struct osmo_prim_hdr *oph, void *_scu) +{ + struct osmo_sccp_user *scu = _scu; + struct osmo_scu_prim *prim = (struct osmo_scu_prim *) oph; + struct osmo_sccp_instance *sccp = osmo_sccp_get_sccp(scu); + struct osmo_prim_hdr *resp = NULL; + int rc = -1; + struct ranap_ue_conn_ctx *ue; + struct new_ue_conn_ctx new_ctx = {}; + uint32_t conn_id; + + LOGPIU(LOGL_DEBUG, "sccp_sap_up(%s)\n", osmo_scu_prim_name(oph)); + + switch (OSMO_PRIM_HDR(oph)) { + case OSMO_PRIM(OSMO_SCU_PRIM_N_CONNECT, PRIM_OP_CONFIRM): + /* confirmation of outbound connection */ + break; + case OSMO_PRIM(OSMO_SCU_PRIM_N_CONNECT, PRIM_OP_INDICATION): + /* indication of new inbound connection request*/ + conn_id = prim->u.connect.conn_id; + LOGPIU(LOGL_DEBUG, "N-CONNECT.ind(X->%u)\n", conn_id); + + new_ctx.sccp_addr = prim->u.connect.calling_addr; + new_ctx.conn_id = conn_id; + + /* first ensure the local SCCP socket is ACTIVE */ + resp = make_conn_resp(&prim->u.connect); + osmo_sccp_user_sap_down(scu, resp); + /* then handle the RANAP payload */ + if (/* prim->u.connect.called_addr.ssn != OSMO_SCCP_SSN_RANAP || */ + !msgb_l2(oph->msg) || msgb_l2len(oph->msg) == 0) { + LOGPIU(LOGL_DEBUG, + "Received N-CONNECT.ind without data\n"); + ue_conn_sccp_addr_add(conn_id, &prim->u.connect.calling_addr); + } else { + rc = ranap_cn_rx_co(cn_ranap_handle_co_initial, &new_ctx, msgb_l2(oph->msg), msgb_l2len(oph->msg)); + } + break; + case OSMO_PRIM(OSMO_SCU_PRIM_N_DISCONNECT, PRIM_OP_INDICATION): + /* indication of disconnect */ + conn_id = prim->u.disconnect.conn_id; + LOGPIU(LOGL_DEBUG, "N-DISCONNECT.ind(%u)\n", conn_id); + + ue_conn_sccp_addr_del(conn_id); + ue = ue_conn_ctx_find(conn_id); + if (!ue) + break; + + rc = 0; + if (msgb_l2len(oph->msg) > 0) + rc = ranap_cn_rx_co(cn_ranap_handle_co, ue, msgb_l2(oph->msg), msgb_l2len(oph->msg)); + + /* A Iu Release event might be used to free the UE in cn_ranap_handle_co. */ + ue = ue_conn_ctx_find(conn_id); + if (!ue) + break; + ue_ctx_link_invalidated_free(ue); + break; + case OSMO_PRIM(OSMO_SCU_PRIM_N_DATA, PRIM_OP_INDICATION): + /* connection-oriented data received */ + conn_id = prim->u.data.conn_id; + LOGPIU(LOGL_DEBUG, "N-DATA.ind(%u, %s)\n", conn_id, + osmo_hexdump(msgb_l2(oph->msg), msgb_l2len(oph->msg))); + + /* resolve UE context */ + ue = ue_conn_ctx_find(conn_id); + if (!ue) { + /* Could be an InitialUE-Message after an empty CR, recreate new_ctx */ + const struct osmo_sccp_addr *sccp_addr = ue_conn_sccp_addr_find(conn_id); + if (!sccp_addr) { + LOGPIU(LOGL_NOTICE, + "N-DATA.ind for unknown conn_id (%u)\n", conn_id); + break; + } + new_ctx.conn_id = conn_id; + new_ctx.sccp_addr = *sccp_addr; + ue_conn_sccp_addr_del(conn_id); + rc = ranap_cn_rx_co(cn_ranap_handle_co_initial, &new_ctx, msgb_l2(oph->msg), msgb_l2len(oph->msg)); + break; + } + + rc = ranap_cn_rx_co(cn_ranap_handle_co, ue, msgb_l2(oph->msg), msgb_l2len(oph->msg)); + break; + case OSMO_PRIM(OSMO_SCU_PRIM_N_UNITDATA, PRIM_OP_INDICATION): + /* connection-less data received */ + LOGPIU(LOGL_DEBUG, "N-UNITDATA.ind(%s)\n", + osmo_hexdump(msgb_l2(oph->msg), msgb_l2len(oph->msg))); + rc = ranap_cn_rx_cl(cn_ranap_handle_cl, prim, msgb_l2(oph->msg), msgb_l2len(oph->msg)); + break; + case OSMO_PRIM(OSMO_SCU_PRIM_N_PCSTATE, PRIM_OP_INDICATION): + handle_pcstate_ind(osmo_sccp_get_ss7(sccp), &prim->u.pcstate); + break; + case OSMO_PRIM(OSMO_SCU_PRIM_N_STATE, PRIM_OP_INDICATION): + LOGPIU(LOGL_DEBUG, "SCCP-User-SAP: Ignoring %s.%s\n", + osmo_scu_prim_type_name(oph->primitive), + get_value_string(osmo_prim_op_names, oph->operation)); + break; + default: + break; + } + + msgb_free(oph->msg); + return rc; +} + +int ranap_iu_init(void *ctx, int log_subsystem, const char *sccp_user_name, struct osmo_sccp_instance *sccp, + ranap_iu_recv_cb_t iu_recv_cb, ranap_iu_event_cb_t iu_event_cb) +{ + iu_log_subsystem = log_subsystem; + talloc_iu_ctx = talloc_named_const(ctx, 1, "iu"); + talloc_asn1_ctx = talloc_named_const(talloc_iu_ctx, 1, "asn1"); + + global_iu_recv_cb = iu_recv_cb; + global_iu_event_cb = iu_event_cb; + g_sccp = sccp; + osmo_sccp_local_addr_by_instance(&g_local_sccp_addr, sccp, OSMO_SCCP_SSN_RANAP); + g_scu = osmo_sccp_user_bind(g_sccp, sccp_user_name, sccp_sap_up, OSMO_SCCP_SSN_RANAP); + + return 0; +} diff --git a/src/sgsn/iu_client_vty.c b/src/sgsn/iu_client_vty.c new file mode 100644 index 0000000..b111a5b --- /dev/null +++ b/src/sgsn/iu_client_vty.c @@ -0,0 +1,121 @@ +/* OpenBSC Iu related interface to quagga VTY */ +/* (C) 2016 by sysmocom s.f.m.c. GmbH <info(a)sysmocom.de> + * 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 <stdlib.h> +#include <string.h> + +#include <osmocom/core/logging.h> +#include <osmocom/vty/command.h> +#include <osmocom/vty/logging.h> +#include <osmocom/sigtran/osmo_ss7.h> +#include <osmocom/sigtran/sccp_sap.h> + +#include <osmocom/ranap/iu_client.h> + +static enum ranap_nsap_addr_enc *g_rab_assign_addr_enc = NULL; + +DEFUN(cfg_iu_asn1_debug, + cfg_iu_asn1_debug_cmd, + "asn1 debug (1|0)", + "ASN.1 settings\n" + "Enable ASN.1 debug messages\n" + "Log ASN.1 debug messages to stderr\n" + "Do not log ASN.1 debug messages to stderr\n") +{ + asn_debug = atoi(argv[0]); + return CMD_SUCCESS; +} + +DEFUN(cfg_iu_asn1_xer_print, + cfg_iu_asn1_xer_print_cmd, + "asn1 xer-print (1|0)", + "ASN.1 settings\n" + "Log human readable representations of all ASN.1 messages to stderr\n" + "Log XML representation of all ASN.1 messages to stderr\n" + "Do not log decoded ASN.1 messages to stderr\n") +{ + asn1_xer_print = atoi(argv[0]); + return CMD_SUCCESS; +} + +#define IU_STR "Iu interface protocol options\n" +DEFUN(cfg_iu_rab_assign_addr_enc, cfg_iu_rab_assign_addr_enc_cmd, + "iu rab-assign-addr-enc (x213|v4raw)", + IU_STR + "Choose RAB Assignment's Transport Layer Address encoding\n" + "ITU-T X.213 compliant address encoding (default)\n" + "32bit length raw IPv4 address (for ip.access nano3G)\n") +{ + if (!g_rab_assign_addr_enc) { + vty_out(vty, "%%RAB Assignment Transport Layer Address" + " encoding not available%s", VTY_NEWLINE); + return CMD_WARNING; + } + + if (strcmp(argv[0], "v4raw") == 0) + *g_rab_assign_addr_enc = RANAP_NSAP_ADDR_ENC_V4RAW; + else + *g_rab_assign_addr_enc = RANAP_NSAP_ADDR_ENC_X213; + return CMD_SUCCESS; +} + +int ranap_iu_vty_config_write(struct vty *vty, const char *indent) +{ + if (!g_rab_assign_addr_enc) { + vty_out(vty, "%%RAB Assignment Transport Layer Address" + " encoding not available%s", VTY_NEWLINE); + return CMD_WARNING; + } + + switch (*g_rab_assign_addr_enc) { + case RANAP_NSAP_ADDR_ENC_V4RAW: + vty_out(vty, "%siu rab-assign-addr-enc v4raw%s", indent, + VTY_NEWLINE); + break; + case RANAP_NSAP_ADDR_ENC_X213: + /* default value, no need to write anything */ + break; + default: + LOGP(0, LOGL_ERROR, "Invalid value for" + " iu.rab_assign_addr_enc: %d\n", + *g_rab_assign_addr_enc); + return CMD_WARNING; + } + + if (asn_debug) + vty_out(vty, "%sasn1 debug 1%s", indent, VTY_NEWLINE); + + if (asn1_xer_print) + vty_out(vty, "%sasn1 xer-print 1%s", indent, VTY_NEWLINE); + + return CMD_SUCCESS; +} + +void ranap_iu_vty_init(int iu_parent_node, enum ranap_nsap_addr_enc *rab_assign_addr_enc) +{ + g_rab_assign_addr_enc = rab_assign_addr_enc; + + install_lib_element(iu_parent_node, &cfg_iu_rab_assign_addr_enc_cmd); + + /* Technically, these are global ASN.1 settings and not necessarily limited to the Iu interface. + * Practically, only Iu users will use ASN.1 in Osmocom programs -- at least so far. So it is + * easiest to have these commands under 'iu'. */ + install_lib_element(iu_parent_node, &cfg_iu_asn1_debug_cmd); + install_lib_element(iu_parent_node, &cfg_iu_asn1_xer_print_cmd); +} -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40812?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: I9c0d9667ddcb57b52eae34da942acfc1688c1418 Gerrit-Change-Number: 40812 Gerrit-PatchSet: 1 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu>

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[S] Change in osmo-sgsn[master]: routing area: move cell.cell_id behind a geran union

by lynxis lazus

Attention is currently required from: fixeria, lynxis lazus, pespin. Hello Jenkins Builder, fixeria, pespin, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40690?usp=email to look at the new patch set (#3). The following approvals got outdated and were removed: Code-Review+1 by fixeria, Code-Review+2 by pespin, Verified+1 by Jenkins Builder The change is no longer submittable: Code-Review and Verified are unsatisfied now. Change subject: routing area: move cell.cell_id behind a geran union ...................................................................... routing area: move cell.cell_id behind a geran union To prepare for Iu support, use the SGSN RA cell for both, a GERAN Cell and a UTRAN Service Area. Change-Id: I0c24d98dd699748842dca271b93e58d27cf02285 --- M include/osmocom/sgsn/gprs_routing_area.h M src/sgsn/gprs_routing_area.c 2 files changed, 11 insertions(+), 5 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/90/40690/3 -- To view, visit https://gerrit.osmocom.org/c/osmo-sgsn/+/40690?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newpatchset Gerrit-Project: osmo-sgsn Gerrit-Branch: master Gerrit-Change-Id: I0c24d98dd699748842dca271b93e58d27cf02285 Gerrit-Change-Number: 40690 Gerrit-PatchSet: 3 Gerrit-Owner: lynxis lazus <lynxis(a)fe80.eu> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-Attention: pespin <pespin(a)sysmocom.de> Gerrit-Attention: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Attention: lynxis lazus <lynxis(a)fe80.eu>

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