Osmocom Open Build Service

commit_4088cdf17d4f9e4956c42cab8aaf27a24afe5179.txt Deleted

commit_60691b02d2b31708f92fb4994a8fe6e585b17f11.txt Added

open5gs_2.7.0.58.4088.dsc -> open5gs_2.7.0.59.6069.dsc Changed

@@ -2,7 +2,7 @@
 Source: open5gs
 Binary: open5gs-common, open5gs-mme, open5gs-sgwc, open5gs-smf, open5gs-amf, open5gs-sgwu, open5gs-upf, open5gs-hss, open5gs-pcrf, open5gs-nrf, open5gs-scp, open5gs-sepp, open5gs-ausf, open5gs-udm, open5gs-pcf, open5gs-nssf, open5gs-bsf, open5gs-udr, open5gs, open5gs-dbg
 Architecture: any
-Version: 2.7.0.58.4088
+Version: 2.7.0.59.6069
 Maintainer: Harald Welte <laforge@gnumonks.org>
 Uploaders: Sukchan Lee <acetcom@gmail.com>
 Homepage: https://open5gs.org
@@ -32,8 +32,8 @@
  open5gs-udr deb net optional arch=any
  open5gs-upf deb net optional arch=any
 Checksums-Sha1:
- 0afcc239aa0f682a207d95832f5fedfa13b3a9f0 14467360 open5gs_2.7.0.58.4088.tar.xz
+ 10c339eb3d71617e7dcc29125b9f62b97cc8565d 14470860 open5gs_2.7.0.59.6069.tar.xz
 Checksums-Sha256:
- e1ef5410cd30a0e6cd60af72d05765accf9a49833f1855b76b95d17c1512d3e8 14467360 open5gs_2.7.0.58.4088.tar.xz
+ 872e3ab1a64cbb07ebfddcacde724e3c2d0715306dc505c31f4269a1b03cbd5d 14470860 open5gs_2.7.0.59.6069.tar.xz
 Files:
- f40fe0856a697f6ffbcd955b6a4988f9 14467360 open5gs_2.7.0.58.4088.tar.xz
+ fa096c1cdc225a3532c7ca0dd92f4b59 14470860 open5gs_2.7.0.59.6069.tar.xz

open5gs_2.7.0.58.4088.tar.xz/.tarball-version -> open5gs_2.7.0.59.6069.tar.xz/.tarball-version Changed

open5gs_2.7.0.58.4088.tar.xz/debian/changelog -> open5gs_2.7.0.59.6069.tar.xz/debian/changelog Changed

open5gs_2.7.0.58.4088.tar.xz/lib/gtp/xact.h -> open5gs_2.7.0.59.6069.tar.xz/lib/gtp/xact.h Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/emm-build.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/emm-build.c Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/emm-handler.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/emm-handler.c Changed

@@ -549,6 +549,36 @@
     return OGS_OK;
 }
 
+bool emm_tau_request_ue_comes_from_gb_or_iu(const ogs_nas_eps_tracking_area_update_request_t *tau_request)
+{
+    /* "When the tracking area updating procedure is initiated in EMM-IDLE mode
+     * to perform an inter-system change from A/Gb mode or Iu mode to S1 mode
+     * and the TIN is set to "P-TMSI", the UE shall include the GPRS ciphering
+     * key sequence number applicable for A/Gb mode or Iu mode and a nonce UE in
+     * the TRACKING AREA UPDATE REQUEST message."
+     */
+    if (!(tau_request->presencemask &
+            OGS_NAS_EPS_TRACKING_AREA_UPDATE_REQUEST_NONCEUE_PRESENT))
+            return false;
+
+    if (tau_request->presencemask &
+        OGS_NAS_EPS_TRACKING_AREA_UPDATE_REQUEST_OLD_GUTI_TYPE_PRESENT) {
+            /* 0 = Native, 1 = Mapped */
+            return tau_request->old_guti_type.guti_type;
+    } else {
+        /* TS 23.003 2.8.2.2.2:
+            * "The most significant bit of the <LAC> shall be set to zero;
+            * and the most significant bit of <MME group id> shall be set to
+            * one. Based on this definition, the most significant bit of the
+            * <MME group id> can be used to distinguish the node type, i.e.
+            * whether it is an MME or SGSN */
+        const ogs_nas_eps_mobile_identity_t *eps_mobile_identity = &tau_request->old_guti;
+        if (eps_mobile_identity->imsi.type != OGS_NAS_EPS_MOBILE_IDENTITY_GUTI)
+            return false;
+        return !(eps_mobile_identity->guti.mme_gid & 0x8000);
+    }
+}
+
 int emm_handle_tau_request(mme_ue_t *mme_ue,
     ogs_nas_eps_tracking_area_update_request_t *tau_request, ogs_pkbuf_t *pkbuf)
 {
@@ -660,6 +690,19 @@
                 sizeof(tau_request->ms_network_capability));
     }
 
+    if (tau_request->presencemask &
+            OGS_NAS_EPS_TRACKING_AREA_UPDATE_REQUEST_NONCEUE_PRESENT) {
+        mme_ue->gprs_ciphering_key_sequence_number = tau_request->gprs_ciphering_key_sequence_number.key_sequence;
+    } else {
+        /* Mark as unavailable, Table 10.5.2/3GPP TS 24.008 */
+        mme_ue->gprs_ciphering_key_sequence_number = OGS_NAS_CIPHERING_KEY_SEQUENCE_NUMBER_NO_KEY_FROM_MS;
+    }
+
+    if (tau_request->presencemask &
+            OGS_NAS_EPS_TRACKING_AREA_UPDATE_REQUEST_NONCEUE_PRESENT) {
+        mme_ue->nonceue = tau_request->nonceue;
+    }
+
     /* TODO:
      *   1) Consider if MME is changed or not.
      *   2) Consider if SGW is changed or not.
@@ -679,6 +722,10 @@
                 nas_guti.m_tmsi,
                 MME_UE_HAVE_IMSI(mme_ue)
                     ? mme_ue->imsi_bcd : "Unknown");
+
+        memcpy(&mme_ue->next.guti,
+           &nas_guti, sizeof(ogs_nas_eps_guti_t));
+
         break;
     default:
         ogs_error("Not implemented%d", eps_mobile_identity->imsi.type);

open5gs_2.7.0.58.4088.tar.xz/src/mme/emm-handler.h -> open5gs_2.7.0.59.6069.tar.xz/src/mme/emm-handler.h Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/emm-sm.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/emm-sm.c Changed

@@ -20,6 +20,7 @@
 #include "mme-event.h"
 #include "mme-timer.h"
 #include "s1ap-handler.h"
+#include "mme-gn-handler.h"
 #include "mme-fd-path.h"
 #include "emm-handler.h"
 #include "emm-build.h"
@@ -286,7 +287,9 @@
 
     mme_ue_t *mme_ue = NULL;
     enb_ue_t *enb_ue = NULL;
+    mme_sgsn_t *sgsn = NULL;
     ogs_nas_eps_message_t *message = NULL;
+    ogs_nas_rai_t rai;
     ogs_nas_security_header_type_t h;
 
     ogs_assert(e);
@@ -489,6 +492,26 @@
                 break;
             }
 
+            if (emm_tau_request_ue_comes_from_gb_or_iu(&message->emm.tracking_area_update_request)) {
+                ogs_info("TAU request : UE comes from SGSN, attempt retrieving context");
+                guti_to_rai_ptmsi(&mme_ue->next.guti, &rai, NULL, NULL);
+                sgsn = mme_sgsn_find_by_routing_address(&rai, 0xffff);
+                if (!sgsn) {
+                    ogs_plmn_id_t plmn_id;
+                    ogs_nas_to_plmn_id(&plmn_id, &rai.lai.nas_plmn_id);
+                    ogs_warn("No SGSN route matching RAIMCC:%u MNC:%u LAC:%u RAC:%u",
+                             ogs_plmn_id_mcc(&plmn_id), ogs_plmn_id_mnc(&plmn_id),
+                             rai.lai.lac, rai.rac);
+                    r = nas_eps_send_tau_reject(mme_ue,
+                    OGS_NAS_EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
+                    OGS_FSM_TRAN(s, &emm_state_exception);
+                    break;
+                }
+                mme_gtp1_send_sgsn_context_request(sgsn, mme_ue);
+                /* FIXME: use a specific FSM state here to state we are waiting for resolution from Gn? */
+                break;
+            }
+
             if (!MME_UE_HAVE_IMSI(mme_ue)) {
                 ogs_info("TAU request : Unknown UE");
                 r = nas_eps_send_tau_reject(mme_ue,

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-context.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-context.c Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-context.h -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-context.h Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-gn-build.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-gn-build.c Changed

@@ -20,11 +20,11 @@
 #include "mme-context.h"
 
 #include "mme-gn-build.h"
+#include "mme-gn-handler.h"
 
 static int sess_fill_mm_context_decoded(mme_sess_t *sess, ogs_gtp1_mm_context_decoded_t *mmctx_dec)
 {
     mme_ue_t *mme_ue = sess->mme_ue;
-    mme_bearer_t *bearer = NULL;
     *mmctx_dec = (ogs_gtp1_mm_context_decoded_t) {
         .gupii = 1, /* Integrity Protection not required */
         .ugipai = 1, /* Ignore "Used GPRS integrity protection algorithm" field" */
@@ -40,7 +40,6 @@
         .nrsrna = 0,
     };
 
-    //TODO: derive cK Ki from mme_ue->kasme
     ogs_kdf_ck_ik_idle_mobility(mme_ue->ul_count.i32, mme_ue->kasme, &mmctx_dec->ck0, &mmctx_dec->ik0);
 
     mmctx_dec->imeisv_len = sizeof(mme_ue->nas_mobile_identity_imeisv);
@@ -49,12 +48,6 @@
     mmctx_dec->ms_network_capability_len = mme_ue->ms_network_capability.length;
     memcpy(&mmctx_dec->ms_network_capability0, ((uint8_t*)&mme_ue->ms_network_capability)+1, sizeof(mme_ue->ms_network_capability) - 1);
 
-    ogs_list_for_each(&sess->bearer_list, bearer) {
-
-        /* FIXME: only 1 PDP Context supported in the message so far. */
-        break;
-    }
-
     return OGS_OK;
 }
 
@@ -177,6 +170,103 @@
     return OGS_OK;
 }
 
+/* 3GPP TS 29.060 7.5.3 SGSN Context Request */
+ogs_pkbuf_t *mme_gn_build_sgsn_context_request(
+                mme_ue_t *mme_ue)
+{
+    ogs_gtp1_message_t gtp1_message;
+    ogs_gtp1_sgsn_context_request_t *req = NULL;
+    ogs_nas_rai_t rai;
+    mme_p_tmsi_t ptmsi;
+    uint32_t ptmsi_sig;
+    ogs_gtp1_gsn_addr_t mme_gnc_gsnaddr, mme_gnc_alt_gsnaddr;
+    int gsn_len;
+    int rv;
+
+    ogs_debug("Gn build SGSN Context Request");
+
+    ogs_assert(mme_ue);
+
+    req = &gtp1_message.sgsn_context_request;
+    memset(&gtp1_message, 0, sizeof(ogs_gtp1_message_t));
+
+    guti_to_rai_ptmsi(&mme_ue->next.guti, &rai, &ptmsi, &ptmsi_sig);
+
+    req->imsi.presence = 0;
+
+    req->routeing_area_identity.presence = 1;
+    req->routeing_area_identity.data = &rai;
+    req->routeing_area_identity.len = sizeof(ogs_nas_rai_t);
+
+    req->temporary_logical_link_identifier.presence = 0;
+
+    req->packet_tmsi.presence = 1;
+    req->packet_tmsi.u32 = be32toh(ptmsi);
+
+    req->p_tmsi_signature.presence = 1;
+    req->p_tmsi_signature.u24 = ptmsi_sig;
+
+    req->ms_validated.presence = 0;
+
+    req->tunnel_endpoint_identifier_control_plane.presence = 1;
+    req->tunnel_endpoint_identifier_control_plane.u32 = mme_ue->gn.mme_gn_teid;
+
+    /* SGSN Address for Control Plane */
+    if (ogs_gtp_self()->gtpc_addr && ogs_gtp_self()->gtpc_addr6) {
+        rv = ogs_gtp1_sockaddr_to_gsn_addr(NULL, ogs_gtp_self()->gtpc_addr6,
+                &mme_gnc_gsnaddr, &gsn_len);
+        if (rv != OGS_OK) {
+            ogs_error("ogs_gtp1_sockaddr_to_gsn_addr() failed");
+            return NULL;
+        }
+        req->sgsn_address_for_control_plane.presence = 1;
+        req->sgsn_address_for_control_plane.data = &mme_gnc_gsnaddr;
+        req->sgsn_address_for_control_plane.len = gsn_len;
+
+        rv = ogs_gtp1_sockaddr_to_gsn_addr(ogs_gtp_self()->gtpc_addr, NULL,
+                &mme_gnc_alt_gsnaddr, &gsn_len);
+        if (rv != OGS_OK) {
+            ogs_error("ogs_gtp1_sockaddr_to_gsn_addr() failed");
+            return NULL;
+        }
+        req->sgsn_address_for_control_plane.presence = 1;
+        req->sgsn_address_for_control_plane.data = &mme_gnc_alt_gsnaddr;
+        req->sgsn_address_for_control_plane.len = gsn_len;
+    } else if (ogs_gtp_self()->gtpc_addr6) {
+        rv = ogs_gtp1_sockaddr_to_gsn_addr(NULL, ogs_gtp_self()->gtpc_addr6,
+                &mme_gnc_gsnaddr, &gsn_len);
+        if (rv != OGS_OK) {
+            ogs_error("ogs_gtp1_sockaddr_to_gsn_addr() failed");
+            return NULL;
+        }
+        req->sgsn_address_for_control_plane.presence = 1;
+        req->sgsn_address_for_control_plane.data = &mme_gnc_gsnaddr;
+        req->sgsn_address_for_control_plane.len = gsn_len;
+        req->alternative_sgsn_address_for_control_plane.presence = 0;
+    } else {
+        rv = ogs_gtp1_sockaddr_to_gsn_addr(ogs_gtp_self()->gtpc_addr, NULL,
+                &mme_gnc_gsnaddr, &gsn_len);
+        if (rv != OGS_OK) {
+            ogs_error("ogs_gtp1_sockaddr_to_gsn_addr() failed");
+            return NULL;
+        }
+        req->sgsn_address_for_control_plane.presence = 1;
+        req->sgsn_address_for_control_plane.data = &mme_gnc_gsnaddr;
+        req->sgsn_address_for_control_plane.len = gsn_len;
+        req->alternative_sgsn_address_for_control_plane.presence = 0;
+    }
+
+    req->sgsn_number.presence = 0;
+
+    req->rat_type.presence = 1;
+    req->rat_type.u8 = OGS_GTP1_RAT_TYPE_EUTRAN;
+
+    req->hop_counter.presence = 0;
+
+    gtp1_message.h.type = OGS_GTP1_SGSN_CONTEXT_REQUEST_TYPE;
+    return ogs_gtp1_build_msg(&gtp1_message);
+}
+
 /* 3GPP TS 29.060 7.5.4 SGSN Context Response */
 ogs_pkbuf_t *mme_gn_build_sgsn_context_response(
                 mme_ue_t *mme_ue, uint8_t cause)
@@ -276,6 +366,67 @@
 
 
 build_ret:
+    return ogs_gtp1_build_msg(&gtp1_message);
+}
+
+/* 3GPP TS 29.060 7.5.5 SGSN Context Acknowledge */
+ogs_pkbuf_t *mme_gn_build_sgsn_context_ack(
+                mme_ue_t *mme_ue, uint8_t cause)
+{
+    ogs_gtp1_message_t gtp1_message;
+    ogs_gtp1_sgsn_context_acknowledge_t *ack = NULL;
+    mme_sess_t *sess = NULL;
+    ogs_gtp1_gsn_addr_t reserved_gnc_gsnaddr;
+    ogs_gtp1_teidII_t teidII;
+
+    ogs_debug("Gn build SGSN Context Acknowledge");
+
+    ack = &gtp1_message.sgsn_context_acknowledge;
+    memset(&gtp1_message, 0, sizeof(ogs_gtp1_message_t));
+    gtp1_message.h.type = OGS_GTP1_SGSN_CONTEXT_ACKNOWLEDGE_TYPE;
+
+    /* 3GPP TS 29.060 7.7.1 Cause, Mandatory */
+    ack->cause.presence = 1;
+    ack->cause.u8 = cause;
+
+    if (cause != OGS_GTP1_CAUSE_REQUEST_ACCEPTED)
+        goto build_ret;
+
+    ogs_list_for_each(&mme_ue->sess_list, sess) {
+        mme_bearer_t *bearer = NULL;
+        if (!MME_HAVE_SGW_S1U_PATH(sess))
+            continue;
+        ogs_list_for_each(&sess->bearer_list, bearer) {
+            /* MME, acting as a new SGSN, shall send the following values in the SGSN Context
+             * Acknowledge message in order to discard the packets received from the old SGSN
+             * (because the MME and the S4-SGSN do not have user plane):
+             * - any reserved TEID (e.g. all 0's, or all 1's) for Tunnel Endpoint Identifier
+             *   Data II value;
+             * - any reserved (implementation dependent) IP address for SGSN Address for user
+                 traffic value.
+             */
+            /* 3GPP TS 29.060 7.7.15 Tunnel Endpoint Identifier Data II, Conditional */
+            teidII.nsapi = bearer->ebi;
+            teidII.teid = 0xffffffff;
+            ack->tunnel_endpoint_identifier_data_ii.presence = 1;
+            ack->tunnel_endpoint_identifier_data_ii.data = &teidII;
+            ack->tunnel_endpoint_identifier_data_ii.len = sizeof(teidII);
+
+            /* Use IPv4 0.0.0.0 as reserved address: */
+            reserved_gnc_gsnaddr.addr = 0;
+            ack->sgsn_address_for_user_traffic.presence = 1;
+            ack->sgsn_address_for_user_traffic.data = &reserved_gnc_gsnaddr;
+            ack->sgsn_address_for_user_traffic.len = OGS_GTP_GSN_ADDRESS_IPV4_LEN;
+
+            /* FIXME: only 1 PDP Context supported in the message so far. */
+            break;
+        }
+        /* FIXME: right now we only support encoding 1 context in the message. */
+        break;
+    }
+
+
+build_ret:
     return ogs_gtp1_build_msg(&gtp1_message);
 }

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-gn-build.h -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-gn-build.h Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-gn-handler.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-gn-handler.c Changed

@@ -30,6 +30,7 @@
 #include "mme-gn-handler.h"
 
 #include "s1ap-path.h"
+#include "nas-path.h"
 
 void mme_gn_handle_echo_request(
         ogs_gtp_xact_t *xact, ogs_gtp1_echo_request_t *req)
@@ -68,12 +69,26 @@
     return OGS_OK;
 }
 
-/* 3GPP TS 23.003 2.8.2.2 Mapping from RAI and P-TMSI to GUT */
+/* 3GPP TS 23.003 2.8.2.1 Mapping from GUTI to RAI, P-TMSI and P-TMSI signature */
+void guti_to_rai_ptmsi(const ogs_nas_eps_guti_t *nas_guti, ogs_nas_rai_t *rai, mme_p_tmsi_t *ptmsi, uint32_t *ptmsi_sig)
+{
+    rai->lai.nas_plmn_id = nas_guti->nas_plmn_id;
+    rai->lai.lac = nas_guti->mme_gid;
+    rai->rac = nas_guti->mme_code;
+    if (ptmsi)
+        *ptmsi = 0xC0000000 |
+                (nas_guti->m_tmsi & 0x3f000000) |
+                (nas_guti->mme_code & 0x0ff) << 16 |
+                (nas_guti->m_tmsi & 0x0000ffff);
+    if (ptmsi_sig)
+        *ptmsi_sig = (nas_guti->m_tmsi & 0x00ff0000);
+}
+
+/* 3GPP TS 23.003 2.8.2.2 Mapping from RAI and P-TMSI to GUTI */
 static void rai_ptmsi_to_guti(const ogs_nas_rai_t *rai, mme_p_tmsi_t ptmsi, uint32_t ptmsi_sig, ogs_nas_eps_guti_t *nas_guti)
 {
-    uint16_t lac = be16toh(rai->lai.lac);;
-    nas_guti->nas_plmn_id =rai->lai.nas_plmn_id;
-    nas_guti->mme_gid = lac;
+    nas_guti->nas_plmn_id = rai->lai.nas_plmn_id;
+    nas_guti->mme_gid = rai->lai.lac;
     nas_guti->mme_code = rai->rac;
     nas_guti->m_tmsi = 0xC0000000 | (ptmsi & 0x3f000000) | (ptmsi_sig & 0x00ff0000) | (ptmsi & 0x0000ffff);
 }
@@ -83,7 +98,8 @@
         ogs_gtp_xact_t *xact, ogs_gtp1_sgsn_context_request_t *req)
 {
     ogs_nas_eps_guti_t nas_guti;
-    ogs_nas_rai_t *rai;
+    ogs_plmn_id_t plmn_id;
+    ogs_nas_rai_t rai;
     mme_ue_t *mme_ue = NULL;
     int rv;
 
@@ -94,9 +110,10 @@
         mme_gtp1_send_sgsn_context_response(NULL, OGS_GTP1_CAUSE_MANDATORY_IE_MISSING, xact);
         return;
     }
-    if (req->routeing_area_identity.len != sizeof(*rai)) {
+
+    if (req->routeing_area_identity.len != sizeof(rai)) {
         ogs_warn("Gn Rx SGSN Context Request RAI wrong size %u vs exp %zu!",
-                 req->routeing_area_identity.len, sizeof(*rai));
+                 req->routeing_area_identity.len, sizeof(rai));
         mme_gtp1_send_sgsn_context_response(NULL, OGS_GTP1_CAUSE_MANDATORY_IE_INCORRECT, xact);
         return;
     }
@@ -126,17 +143,35 @@
         return;
     }
 
-    rai = req->routeing_area_identity.data;
+    memcpy(&rai, req->routeing_area_identity.data, sizeof(rai));
+    rai.lai.lac = be16toh(rai.lai.lac);
+    ogs_nas_to_plmn_id(&plmn_id, &rai.lai.nas_plmn_id);
+    ogs_debug("    RAIMCC:%u MNC:%u LAC:%u RAC:%u",
+             ogs_plmn_id_mcc(&plmn_id), ogs_plmn_id_mnc(&plmn_id),
+             rai.lai.lac, rai.rac);
 
     if (req->imsi.presence) {
+        char imsi_bcdOGS_MAX_IMSI_BCD_LEN+1;
+        ogs_buffer_to_bcd(req->imsi.data, req->imsi.len, imsi_bcd);
+        ogs_debug("    IMSI%s", imsi_bcd);
         mme_ue = mme_ue_find_by_imsi(req->imsi.data, req->imsi.len);
+        if (!mme_ue)
+            ogs_warn("Gn Rx SGSN Context Request: Unknown UE with IMSI%s", imsi_bcd);
     } else if (req->packet_tmsi.presence) { /* P-TMSI */
         if (!req->p_tmsi_signature.presence) {
             ogs_warn("Gn Rx SGSN Context Request with 'P-TMSI' but no P-TMSI Signature! Assuming value 0.");
             req->p_tmsi_signature.u24 = 0;
         }
-        rai_ptmsi_to_guti(rai, req->packet_tmsi.u32, req->p_tmsi_signature.u24, &nas_guti);
+        rai_ptmsi_to_guti(&rai, req->packet_tmsi.u32, req->p_tmsi_signature.u24, &nas_guti);
+        ogs_debug("    PTMSI0x%08x PTMSI_SIG0x%06x -> GUTIG:%d,C:%d,M_TMSI:0x%x",
+                  req->packet_tmsi.u32, req->p_tmsi_signature.u24,
+                  nas_guti.mme_gid, nas_guti.mme_code, nas_guti.m_tmsi);
         mme_ue = mme_ue_find_by_guti(&nas_guti);
+        if (!mme_ue)
+            ogs_warn("Gn Rx SGSN Context Request: Unknown UE with RAIMCC:%u MNC:%u LAC:%u RAC:%u PTMSI0x%08x PTMSI_SIG0x%06x -> GUTIG:%d,C:%d,M_TMSI:0x%x",
+                     ogs_plmn_id_mcc(&plmn_id), ogs_plmn_id_mnc(&plmn_id), rai.lai.lac, rai.rac,
+                     req->packet_tmsi.u32, req->p_tmsi_signature.u24,
+                     nas_guti.mme_gid, nas_guti.mme_code, nas_guti.m_tmsi);
     } else if (req->temporary_logical_link_identifier.presence) {
         if (!req->p_tmsi_signature.presence) {
             ogs_warn("Gn Rx SGSN Context Request with 'TLLI' but no P-TMSI Signature! Assuming value 0.");
@@ -145,8 +180,16 @@
         /* TS 29.060 7.5.3 "The TLLI/P-TMSI and RAI is a foreign TLLI/P-TMSI and an RAI in the old SGSN."
          * A foregin TLLI is "tlli = (p_tmsi & 0x3fffffff) | 0x80000000", and since we only use 0x3fffffff
          * bits of P-TMSI to derive the GUTI, it's totally fine passing the TLLI as P-TMSI. */
-        rai_ptmsi_to_guti(rai, req->temporary_logical_link_identifier.u32, req->p_tmsi_signature.u24, &nas_guti);
+        rai_ptmsi_to_guti(&rai, req->temporary_logical_link_identifier.u32, req->p_tmsi_signature.u24, &nas_guti);
+        ogs_debug("    TLLI0x%08x PTMSI_SIG0x%06x -> GUTIG:%d,C:%d,M_TMSI:0x%x",
+                  req->temporary_logical_link_identifier.u32, req->p_tmsi_signature.u24,
+                  nas_guti.mme_gid, nas_guti.mme_code, nas_guti.m_tmsi);
         mme_ue = mme_ue_find_by_guti(&nas_guti);
+        if (!mme_ue)
+            ogs_warn("Gn Rx SGSN Context Request: Unknown UE with RAIMCC:%u MNC:%u LAC:%u RAC:%u TLLI0x%08x PTMSI_SIG0x%06x -> GUTIG:%d,C:%d,M_TMSI:0x%x",
+                     ogs_plmn_id_mcc(&plmn_id), ogs_plmn_id_mnc(&plmn_id), rai.lai.lac, rai.rac,
+                     req->temporary_logical_link_identifier.u32, req->p_tmsi_signature.u24,
+                     nas_guti.mme_gid, nas_guti.mme_code, nas_guti.m_tmsi);
     }
 
     if (!mme_ue) {
@@ -177,6 +220,223 @@
     mme_gtp1_send_sgsn_context_response(mme_ue, OGS_GTP1_CAUSE_REQUEST_ACCEPTED, xact);
 }
 
+static mme_sess_t *mme_ue_session_from_gtp1_pdp_ctx(mme_ue_t *mme_ue, const ogs_gtp1_pdp_context_decoded_t *gtp1_pdp_ctx)
+{
+    mme_sess_t *sess = NULL;
+    mme_bearer_t *bearer = NULL;
+    const ogs_gtp1_qos_profile_decoded_t *qos_pdec = &gtp1_pdp_ctx->qos_sub;
+    uint8_t pti = gtp1_pdp_ctx->trans_id;
+    uint8_t qci = 0;
+    ogs_session_t *ogs_sess;
+
+    ogs_sess = mme_session_find_by_apn(mme_ue, gtp1_pdp_ctx->apn);
+    if (!ogs_sess) {
+        ogs_assert(mme_ue->num_of_session < OGS_MAX_NUM_OF_SESS);
+        ogs_sess = &mme_ue->sessionmme_ue->num_of_session;
+        mme_ue->num_of_session++;
+        ogs_sess->name = ogs_strdup(gtp1_pdp_ctx->apn);
+    }
+    ogs_sess->smf_ip = gtp1_pdp_ctx->ggsn_address_c;
+    ogs_sess->context_identifier = gtp1_pdp_ctx->pdp_ctx_id;
+    ogs_sess->session_type = gtp1_pdp_ctx->pdp_type_num0;
+    ogs_sess->ue_ip = gtp1_pdp_ctx->pdp_address0;
+    /* TODO: sess->paa with gtp1_pdp_ctx->pdp_address0,
+     using/implementing ogs_gtp2_ip_to_paa ? */
+    ogs_ip_to_paa(&ogs_sess->ue_ip, &ogs_sess->paa);
+
+    /* 3GPP TS 23.060 section 9.2.1A: "The QoS profiles of the PDP context and EPS bearer are mapped as specified in TS 23.401"
+     * 3GPP TS 23.401 Annex E: "Mapping between EPS and Release 99 QoS parameters"
+     */
+    ogs_gtp1_qos_profile_to_qci(qos_pdec, &qci);
+    ogs_sess->qos.index = qci;
+    ogs_sess->qos.arp.priority_level = qos_pdec->qos_profile.arp; /* 3GPP TS 23.401 Annex E Table E.2 */
+    ogs_sess->qos.arp.pre_emption_capability = 0; /* ignored as per 3GPP TS 23.401 Annex E */
+    ogs_sess->qos.arp.pre_emption_vulnerability = 0; /* ignored as per 3GPP TS 23.401 Annex E */
+    if (qos_pdec->data_octet6_to_13_present) {
+        ogs_sess->ambr.downlink = qos_pdec->dec_mbr_kbps_dl * 1000;
+        ogs_sess->ambr.uplink = qos_pdec->dec_mbr_kbps_ul * 1000;
+    }
+
+    sess = mme_sess_find_by_pti(mme_ue, pti);
+    if (!sess) {
+        sess = mme_sess_add(mme_ue, pti);
+        ogs_assert(sess);
+    }
+
+    sess->session = ogs_sess;
+    sess->pgw_s5c_teid = gtp1_pdp_ctx->ul_teic;
+    sess->pgw_s5c_ip = gtp1_pdp_ctx->ggsn_address_c;
+    switch (ogs_sess->session_type) {
+    case OGS_PDU_SESSION_TYPE_IPV4:
+        sess->request_type.type = OGS_NAS_EPS_PDN_TYPE_IPV4;
+        break;
+    case OGS_PDU_SESSION_TYPE_IPV6:
+        sess->request_type.type = OGS_NAS_EPS_PDN_TYPE_IPV6;
+        break;
+    case OGS_PDU_SESSION_TYPE_IPV4V6:
+        sess->request_type.type = OGS_NAS_EPS_PDN_TYPE_IPV4V6;
+        break;
+    }
+    sess->request_type.value = OGS_NAS_EPS_REQUEST_TYPE_INITIAL;
+
+    bearer = mme_bearer_find_by_sess_ebi(sess, gtp1_pdp_ctx->nsapi);
+    if (!bearer) {
+        bearer = mme_default_bearer_in_sess(sess);
+        if (!bearer) {
+            bearer = mme_bearer_add(sess);
+            ogs_assert(bearer);
+        }
+    }
+    bearer->pgw_s5u_teid = gtp1_pdp_ctx->ul_teid;
+    bearer->pgw_s5u_ip = gtp1_pdp_ctx->ggsn_address_u;
+    /* Send invalid Remote Address and TEID since it makes no sense that SGW
+     * forwards GTPUv2 traffic to SGSN: */
+    bearer->enb_s1u_ip.ipv4 = 1;
+    bearer->enb_s1u_ip.addr = 0;
+    bearer->enb_s1u_teid = 0xffffffff;
+
+    return sess;
+}
+
+/* TS 29.060 7.5.4 SGSN Context Response */
+int mme_gn_handle_sgsn_context_response(
+        ogs_gtp_xact_t *xact, mme_ue_t *mme_ue, ogs_gtp1_sgsn_context_response_t *resp)
+{
+    int rv;
+    int gtp1_cause, emm_cause = OGS_NAS_EMM_CAUSE_NETWORK_FAILURE;
+    char imsi_bcdOGS_MAX_IMSI_BCD_LEN+1;
+    ogs_gtp1_mm_context_decoded_t gtp1_mm_ctx;
+    ogs_gtp1_pdp_context_decoded_t gtp1_pdp_ctx;
+    mme_sess_t *sess = NULL;
+    uint8_t ret_cause = OGS_GTP1_CAUSE_REQUEST_ACCEPTED;
+
+    ogs_debug("Gn Rx SGSN Context Response");
+
+    rv = ogs_gtp_xact_commit(xact);
+    if (rv != OGS_OK) {
+        ogs_error("ogs_gtp_xact_commit() failed");
+        return OGS_GTP1_CAUSE_SYSTEM_FAILURE;
+    }
+
+    if (!mme_ue) {
+        ogs_error("MME-UE Context has already been removed");
+        return OGS_GTP1_CAUSE_IMSI_IMEI_NOT_KNOWN;
+    }
+
+    switch (resp->cause.u8) {
+     case OGS_GTP1_CAUSE_REQUEST_ACCEPTED:
+        break; /* Handle below */
+    case OGS_GTP1_CAUSE_TGT_ACC_RESTRICTED_SUBSCRIBER:
+        emm_cause = OGS_NAS_EMM_CAUSE_REQUESTED_SERVICE_OPTION_NOT_AUTHORIZED_IN_THIS_PLMN;
+        break;
+    case OGS_GTP1_CAUSE_IMSI_IMEI_NOT_KNOWN:
+    case OGS_GTP1_CAUSE_SYSTEM_FAILURE:
+    case OGS_GTP1_CAUSE_MANDATORY_IE_INCORRECT:
+    case OGS_GTP1_CAUSE_MANDATORY_IE_MISSING:
+    case OGS_GTP1_CAUSE_OPTIONAL_IE_INCORRECT:
+    case OGS_GTP1_CAUSE_INVALID_MESSAGE_FORMAT:
+    case OGS_GTP1_CAUSE_P_TMSI_SIGNATURE_MISMATCH:
+    default:
+        emm_cause = OGS_NAS_EMM_CAUSE_NETWORK_FAILURE;
+        break;
+    }
+
+    if (resp->cause.u8 != OGS_GTP1_CAUSE_REQUEST_ACCEPTED) {
+        ogs_error("Gn Rx SGSN Context Response cause:%u", resp->cause.u8);
+        rv = nas_eps_send_tau_reject(mme_ue, emm_cause);
+        return OGS_GTP1_CAUSE_SYSTEM_FAILURE;
+    }
+
+    if (!resp->imsi.presence) {
+        ogs_error("Gn Rx SGSN Context Response with no IMSI!");
+        gtp1_cause = OGS_GTP1_CAUSE_MANDATORY_IE_MISSING;
+        goto nack_and_reject;
+    }
+
+    ogs_buffer_to_bcd(resp->imsi.data, resp->imsi.len, imsi_bcd);
+    ogs_info("    IMSI%s", imsi_bcd);
+    mme_ue_set_imsi(mme_ue, imsi_bcd);
+
+    if (!resp->tunnel_endpoint_identifier_control_plane.presence) {
+        ogs_error("Gn Rx SGSN Context Response with no Tunnel Endpoint Identifier Control Plane!");
+        gtp1_cause = OGS_GTP1_CAUSE_MANDATORY_IE_MISSING;
+        goto nack_and_reject;
+    }
+
+    mme_ue->gn.sgsn_gn_teid = resp->tunnel_endpoint_identifier_control_plane.u32;
+
+    if (!resp->mm_context.presence) {
+        ogs_error("Gn Rx SGSN Context Response with no MM Context!");
+        gtp1_cause = OGS_GTP1_CAUSE_MANDATORY_IE_MISSING;
+        goto nack_and_reject;
+    }
+
+    if (!resp->pdp_context.presence) {
+        ogs_error("Gn Rx SGSN Context Response with no PDP Context!");
+        gtp1_cause = OGS_GTP1_CAUSE_MANDATORY_IE_MISSING;
+        goto nack_and_reject;
+    }
+
+    rv = ogs_gtp1_parse_mm_context(&gtp1_mm_ctx, &resp->mm_context);
+    if (rv != OGS_OK) {
+        ogs_error("Gn Rx SGSN Context Response: Failed parsing MM Context");
+        gtp1_cause = OGS_GTP1_CAUSE_MANDATORY_IE_INCORRECT;
+        goto nack_and_reject;
+    }
+
+    rv = ogs_gtp1_parse_pdp_context(&gtp1_pdp_ctx, &resp->pdp_context);
+    if (rv != OGS_OK) {
+        ogs_error("Gn Rx SGSN Context Response: Failed parsing PDP Context");
+        gtp1_cause = OGS_GTP1_CAUSE_MANDATORY_IE_INCORRECT;
+        goto nack_and_reject;
+    }
+
+    if (gtp1_mm_ctx.imeisv_len > 0) {
+        memcpy(&mme_ue->nas_mobile_identity_imeisv, &gtp1_mm_ctx.imeisv0,
+               ogs_min(gtp1_mm_ctx.imeisv_len, sizeof(mme_ue->nas_mobile_identity_imeisv)));
+    } else {
+        /* 3GPP TS 23.401 D3.6: we need to request IMEI to the UE over EUTRAN */
+        ret_cause = OGS_GTP1_CAUSE_REQUEST_IMEI;
+    }
+
+    mme_ue->ms_network_capability.length = gtp1_mm_ctx.ms_network_capability_len;
+    if (gtp1_mm_ctx.ms_network_capability_len > 0)
+        memcpy(((uint8_t*)&mme_ue->ms_network_capability)+1, &gtp1_mm_ctx.ms_network_capability0,
+             ogs_min(gtp1_mm_ctx.ms_network_capability_len, sizeof(mme_ue->ms_network_capability) - 1));
+    /* TODO: how to fill first byte of mme_ue->ms_network_capability ? */
+
+    mme_ue->nas_eps.ksi = gtp1_mm_ctx.ksi;
+    /* 3GPP TS 33.401 A.10, A.11: */
+    mme_ue->noncemme = ogs_random32();
+    /* 3GPP TS 33.401 7.2.6.2 Establishment of keys for cryptographically protected radio bearers: */
+    /* See also 3GPP TS 33.401 9.1.2 */
+    ogs_kdf_kasme_idle_mobility(gtp1_mm_ctx.ck, gtp1_mm_ctx.ik, mme_ue->nonceue, mme_ue->noncemme, mme_ue->kasme);
+    ogs_kdf_kenb(mme_ue->kasme, mme_ue->ul_count.i32, mme_ue->kenb);
+    ogs_kdf_nh_enb(mme_ue->kasme, mme_ue->kenb, mme_ue->nh);
+    mme_ue->nhcc = 1;
+
+    if (gtp1_mm_ctx.num_vectors > 0) {
+        mme_ue->xres_len = gtp1_mm_ctx.auth_quintuplets0.xres_len;
+        memcpy(mme_ue->xres, gtp1_mm_ctx.auth_quintuplets0.xres, mme_ue->xres_len);
+        memcpy(mme_ue->rand, gtp1_mm_ctx.auth_quintuplets0.rand, OGS_RAND_LEN);
+        memcpy(mme_ue->autn, gtp1_mm_ctx.auth_quintuplets0.autn, OGS_AUTN_LEN);
+    }
+
+    sess = mme_ue_session_from_gtp1_pdp_ctx(mme_ue, &gtp1_pdp_ctx);
+
+    rv = mme_gtp1_send_sgsn_context_ack(mme_ue, OGS_GTP1_CAUSE_REQUEST_ACCEPTED, xact);
+
+    mme_gtp_send_create_session_request(sess, OGS_GTP_CREATE_IN_TRACKING_AREA_UPDATE);
+
+    return ret_cause;
+
+nack_and_reject:
+    rv = mme_gtp1_send_sgsn_context_ack(mme_ue, gtp1_cause, xact);
+    ogs_info("%s TAU Reject OGS_NAS_EMM_CAUSE:%d", mme_ue->imsi_bcd, emm_cause);
+    rv = nas_eps_send_tau_reject(mme_ue, emm_cause);
+    return OGS_GTP1_CAUSE_SYSTEM_FAILURE;
+}
+
 /* TS 29.060 7.5.5 SGSN Context Acknowledge */
 void mme_gn_handle_sgsn_context_acknowledge(
         ogs_gtp_xact_t *xact, mme_ue_t *mme_ue, ogs_gtp1_sgsn_context_acknowledge_t *req)

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-gn-handler.h -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-gn-handler.h Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-gtp-path.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-gtp-path.c Changed

@@ -758,6 +758,45 @@
     return rv;
 }
 
+/*************************
+ * GTPv1C (Gn interface):
+ *************************/
+
+int mme_gtp1_send_sgsn_context_request(
+        mme_sgsn_t *sgsn, mme_ue_t *mme_ue)
+{
+    int rv;
+    ogs_gtp1_header_t h;
+    ogs_pkbuf_t *pkbuf = NULL;
+    ogs_gtp_xact_t *xact = NULL;
+
+    ogs_assert(sgsn);
+
+    memset(&h, 0, sizeof(ogs_gtp1_header_t));
+    h.type = OGS_GTP1_SGSN_CONTEXT_REQUEST_TYPE;
+    h.teid = 0;
+
+    pkbuf = mme_gn_build_sgsn_context_request(mme_ue);
+    if (!pkbuf) {
+        ogs_error("mme_gn_build_ran_information_relay() failed");
+        return OGS_ERROR;
+    }
+
+    xact = ogs_gtp1_xact_local_create(&sgsn->gnode, &h, pkbuf, NULL, NULL);
+    if (!xact) {
+        ogs_error("ogs_gtp1_xact_local_create() failed");
+        return OGS_ERROR;
+    }
+    /* TS 29.060 8.2: "The SGSN Context Request message, where the Tunnel
+     * Endpoint Identifier shall be set to all zeroes." */
+    xact->local_teid = 0;
+
+    rv = ogs_gtp_xact_commit(xact);
+    ogs_expect(rv == OGS_OK);
+
+    return rv;
+}
+
 int mme_gtp1_send_sgsn_context_response(
         mme_ue_t *mme_ue, uint8_t cause, ogs_gtp_xact_t *xact)
 {
@@ -778,6 +817,38 @@
 
     rv = ogs_gtp1_xact_update_tx(xact, &h, pkbuf);
     if (rv != OGS_OK) {
+        ogs_error("ogs_gtp1_xact_update_tx() failed");
+        return OGS_ERROR;
+    }
+
+    rv = ogs_gtp_xact_commit(xact);
+    ogs_expect(rv == OGS_OK);
+
+    return rv;
+}
+
+int mme_gtp1_send_sgsn_context_ack(
+        mme_ue_t *mme_ue, uint8_t cause, ogs_gtp_xact_t *xact)
+{
+    int rv;
+    ogs_gtp1_header_t h;
+    ogs_pkbuf_t *pkbuf = NULL;
+
+    ogs_assert(mme_ue);
+
+    memset(&h, 0, sizeof(ogs_gtp1_header_t));
+    h.type = OGS_GTP1_SGSN_CONTEXT_ACKNOWLEDGE_TYPE;
+    h.teid = mme_ue->gn.sgsn_gn_teid;
+
+    pkbuf = mme_gn_build_sgsn_context_ack(mme_ue, cause);
+    if (!pkbuf) {
+        ogs_error("mme_gn_build_sgsn_context_response() failed");
+        return OGS_ERROR;
+    }
+    xact->local_teid = mme_ue->gn.mme_gn_teid;
+
+    rv = ogs_gtp1_xact_update_tx(xact, &h, pkbuf);
+    if (rv != OGS_OK) {
         ogs_error("ogs_gtp1_xact_update_tx() failed");
         return OGS_ERROR;
     }

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-gtp-path.h -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-gtp-path.h Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-s11-build.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-s11-build.c Changed

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-s11-handler.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-s11-handler.c Changed

@@ -232,6 +232,12 @@
                     OGS_NAS_ESM_CAUSE_NETWORK_FAILURE);
             ogs_expect(r == OGS_OK);
             ogs_assert(r != OGS_ERROR);
+        } else if (create_action == OGS_GTP_CREATE_IN_TRACKING_AREA_UPDATE) {
+            ogs_error("%s TAU reject Cause:%d",
+                    mme_ue->imsi_bcd, session_cause);
+            r = nas_eps_send_tau_reject(mme_ue, OGS_NAS_EMM_CAUSE_NETWORK_FAILURE);
+            ogs_expect(r == OGS_OK);
+            ogs_assert(r != OGS_ERROR);
         }
         mme_send_delete_session_or_mme_ue_context_release(mme_ue);
         return;
@@ -342,6 +348,10 @@
 
         ogs_debug("    ENB_S1U_TEID%d SGW_S1U_TEID%d PGW_S5U_TEID%d",
             bearer->enb_s1u_teid, bearer->sgw_s1u_teid, bearer->pgw_s5u_teid);
+
+        if (create_action == OGS_GTP_CREATE_IN_TRACKING_AREA_UPDATE &&
+            !OGS_FSM_CHECK(&bearer->sm, esm_state_active))
+            OGS_FSM_TRAN(&bearer->sm, esm_state_active);
     }
 
     /* Bearer Level QoS */
@@ -428,6 +438,9 @@
             ogs_assert(r != OGS_ERROR);
         }
 
+    } else if (create_action == OGS_GTP_CREATE_IN_TRACKING_AREA_UPDATE) {
+        /* 3GPP TS 23.401 D.3.6 step 13, 14: */
+        mme_s6a_send_ulr(mme_ue);
     } else if (create_action == OGS_GTP_CREATE_IN_UPLINK_NAS_TRANSPORT) {
         ogs_assert(OGS_PDU_SESSION_TYPE_IS_VALID(session->paa.session_type));
         r = nas_eps_send_activate_default_bearer_context_request(

open5gs_2.7.0.58.4088.tar.xz/src/mme/mme-sm.c -> open5gs_2.7.0.59.6069.tar.xz/src/mme/mme-sm.c Changed

Changes of Revision 380