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Pass to RRC the 5G-S-TMSI extracted from NAS Registration Accept

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* NAS -> RRC: RRC receives an ITTI message with NAS 5GMM indication message
  containing the 5G-S-TMSI derived from NAS GUTI
* 5G-S-TMSI is stored in the RRC instance and to be later encoded in the RRCSetup
This commit is contained in:
Guido Casati
2025-02-18 12:47:13 +01:00
parent 4736f97055
commit ca869d8fd3
6 changed files with 35 additions and 0 deletions
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openair3/NAS/NR_UE/nr_nas_msg.c
+14
View File
@@ -77,6 +77,8 @@ static nr_ue_nas_t nr_ue_nas[MAX_NAS_UE] = {0};
TYPE_DEF(NAS_SECURITY_INTEGRITY_PASSED, 4) \
TYPE_DEF(NAS_SECURITY_BAD_INPUT, 5)
const char *nr_release_cause_desc[] = {"RRC_CONNECTION_FAILURE", "RRC_RESUME_FAILURE", "OTHER"};
typedef enum { FOREACH_STATE(TO_ENUM) } security_state_t;
static const text_info_t security_state_info[] = {FOREACH_STATE(TO_TEXT)};
@@ -1365,6 +1367,15 @@ static void send_nas_detach_req(nr_ue_nas_t *nas, bool wait_release)
itti_send_msg_to_task(TASK_RRC_NRUE, nas->UE_id, msg);
}
static void send_nas_5gmm_ind(instance_t instance, const Guti5GSMobileIdentity_t *guti)
{
MessageDef *msg = itti_alloc_new_message(TASK_NAS_NRUE, 0, NAS_5GMM_IND);
nas_5gmm_ind_t *ind = &NAS_5GMM_IND(msg);
LOG_I(NR_RRC, "5G-GUTI: AMF pointer %u, AMF Set ID %u, 5G-TMSI %u \n", guti->amfpointer, guti->amfsetid, guti->tmsi);
ind->fiveG_STMSI = ((uint64_t)guti->amfsetid << 38) | ((uint64_t)guti->amfpointer << 32) | guti->tmsi;
itti_send_msg_to_task(TASK_RRC_NRUE, instance, msg);
}
static void request_default_pdusession(nr_ue_nas_t *nas)
{
MessageDef *message_p = itti_alloc_new_message(TASK_NAS_NRUE, nas->UE_id, NAS_PDU_SESSION_REQ);
@@ -1439,6 +1450,9 @@ static void handle_registration_accept(nr_ue_nas_t *nas, const uint8_t *pdu_buff
LOG_W(NAS, "no GUTI in registration accept\n");
}
if(nas->guti)
send_nas_5gmm_ind(nas->UE_id, nas->guti);
as_nas_info_t initialNasMsg = {0};
generateRegistrationComplete(nas, &initialNasMsg, NULL);
if (initialNasMsg.length > 0) {