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Handle NGAP Initial Context Setup Request message from NGAP task

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This commit is contained in:
Xue Song
2020-09-17 07:55:05 +00:00
parent 5689cf906a
commit e5216cdba3
4 changed files with 122 additions and 2 deletions
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openair2/RRC/NR/nr_rrc_defs.h
+2
View File
@@ -314,6 +314,8 @@ typedef struct gNB_RRC_UE_s {
/* Information from S1AP initial_context_setup_req */
uint32_t gNB_ue_s1ap_id :24;
uint32_t gNB_ue_ngap_id;
uint64_t amf_ue_ngap_id:40;
nr_rrc_guami_t ue_guami;
security_capabilities_t security_capabilities;
openair2/RRC/NR/nr_rrc_proto.h
+5 -1
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@@ -91,7 +91,11 @@ int generate_CG_Config(gNB_RRC_INST *rrc,
int parse_CG_ConfigInfo(gNB_RRC_INST *rrc, NR_CG_ConfigInfo_t *CG_ConfigInfo, x2ap_ENDC_sgnb_addition_req_t *m);
void
rrc_gNB_generate_SecurityModeCommand(
const protocol_ctxt_t *const ctxt_pP,
rrc_gNB_ue_context_t *const ue_context_pP
);
/**\brief RRC eNB task.
\param void *args_p Pointer on arguments to start the task. */
openair2/RRC/NR/rrc_gNB_NGAP.c
+108 -1
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@@ -67,6 +67,45 @@ get_next_ue_initial_id(
return ue_initial_id[mod_id];
}
//------------------------------------------------------------------------------
/*
* Get the UE NG struct containing hashtables NG_id/UE_id.
* Is also used to set the NG_id of the UE, depending on inputs.
*/
struct rrc_ue_ngap_ids_s *
rrc_gNB_NGAP_get_ue_ids(
gNB_RRC_INST *const rrc_instance_pP,
const uint16_t ue_initial_id,
const uint32_t gNB_ue_ngap_idP
)
//------------------------------------------------------------------------------
{
rrc_ue_ngap_ids_t *result = NULL;
/* TODO */
return result;
}
//------------------------------------------------------------------------------
static struct rrc_gNB_ue_context_s *
rrc_gNB_get_ue_context_from_ngap_ids(
const instance_t instanceP,
const uint16_t ue_initial_idP,
const uint32_t gNB_ue_ngap_idP
)
//------------------------------------------------------------------------------
{
rrc_ue_ngap_ids_t *temp = NULL;
temp = rrc_gNB_NGAP_get_ue_ids(RC.nrrrc[GNB_INSTANCE_TO_MODULE_ID(instanceP)], ue_initial_idP, gNB_ue_ngap_idP);
if (temp != NULL) {
return rrc_gNB_get_ue_context(RC.nrrrc[GNB_INSTANCE_TO_MODULE_ID(instanceP)], temp->ue_rnti);
}
return NULL;
}
//------------------------------------------------------------------------------
/*
* Initial UE NAS message on S1AP.
@@ -184,4 +223,72 @@ rrc_gNB_send_NGAP_NAS_FIRST_REQ(
}
itti_send_msg_to_task (TASK_NGAP, ctxt_pP->instance, message_p);
}
}
//------------------------------------------------------------------------------
int
rrc_gNB_process_NGAP_INITIAL_CONTEXT_SETUP_REQ(
MessageDef *msg_p,
const char *msg_name,
instance_t instance
)
//------------------------------------------------------------------------------
{
uint16_t ue_initial_id;
uint32_t gNB_ue_ngap_id;
rrc_gNB_ue_context_t *ue_context_p = NULL;
protocol_ctxt_t ctxt;
ue_initial_id = NGAP_INITIAL_CONTEXT_SETUP_REQ(msg_p).ue_initial_id;
gNB_ue_ngap_id = NGAP_INITIAL_CONTEXT_SETUP_REQ(msg_p).gNB_ue_ngap_id;
ue_context_p = rrc_gNB_get_ue_context_from_ngap_ids(instance, ue_initial_id, gNB_ue_ngap_id);
LOG_I(NR_RRC, "[gNB %d] Received %s: ue_initial_id %d, gNB_ue_ngap_id %d \n",
instance, msg_name, ue_initial_id, gNB_ue_ngap_id);
if (ue_context_p == NULL) {
/* Can not associate this message to an UE index, send a failure to NGAP and discard it! */
MessageDef *msg_fail_p = NULL;
LOG_W(NR_RRC, "[gNB %d] In NGAP_INITIAL_CONTEXT_SETUP_REQ: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, gNB_ue_ngap_id);
msg_fail_p = itti_alloc_new_message (TASK_RRC_GNB, NGAP_INITIAL_CONTEXT_SETUP_FAIL);
NGAP_INITIAL_CONTEXT_SETUP_FAIL (msg_fail_p).gNB_ue_ngap_id = gNB_ue_ngap_id;
// TODO add failure cause when defined!
itti_send_msg_to_task (TASK_NGAP, instance, msg_fail_p);
return (-1);
} else {
PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, GNB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0);
ue_context_p->ue_context.gNB_ue_ngap_id = NGAP_INITIAL_CONTEXT_SETUP_REQ (msg_p).gNB_ue_ngap_id;
ue_context_p->ue_context.amf_ue_ngap_id = NGAP_INITIAL_CONTEXT_SETUP_REQ (msg_p).amf_ue_ngap_id;
/* TODO security */
uint8_t send_security_mode_command = TRUE;
/* TODO rrc_pdcp_config_security */
// rrc_pdcp_config_security(
// &ctxt,
// ue_context_p,
// send_security_mode_command);
if (send_security_mode_command) {
rrc_gNB_generate_SecurityModeCommand (&ctxt, ue_context_p);
send_security_mode_command = FALSE;
/* TODO rrc_pdcp_config_security */
// rrc_pdcp_config_security(
// &ctxt,
// ue_context_p,
// send_security_mode_command);
} else {
/* TODO rrc_gNB_generate_UECapabilityEnquiry */
// rrc_gNB_generate_UECapabilityEnquiry (&ctxt, ue_context_p);
}
// in case, send the S1SP initial context response if it is not sent with the attach complete message
if (ue_context_p->ue_context.Status == NR_RRC_RECONFIGURED) {
LOG_I(NR_RRC, "Sending rrc_gNB_send_NGAP_INITIAL_CONTEXT_SETUP_RESP, cause %ld\n", ue_context_p->ue_context.reestablishment_cause);
// rrc_gNB_send_NGAP_INITIAL_CONTEXT_SETUP_RESP(&ctxt,ue_context_p);
}
return 0;
}
}
openair2/RRC/NR/rrc_gNB_NGAP.h
+7
View File
@@ -48,4 +48,11 @@ rrc_gNB_send_NGAP_NAS_FIRST_REQ(
NR_RRCSetupComplete_IEs_t *rrcSetupComplete
);
int
rrc_gNB_process_NGAP_INITIAL_CONTEXT_SETUP_REQ(
MessageDef *msg_p,
const char *msg_name,
instance_t instance
);
#endif