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Commit 14a37e41 authored by Sakthivel Velumani's avatar Sakthivel Velumani
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Moved GTP tunnel creation out of F1AP message sending

parent cdd58ab9
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Showing with 88 additions and 37 deletions
openair2/COMMON/e1ap_messages_types.h
View file @ 14a37e41
......@@ -125,7 +125,11 @@ typedef struct pdu_session_to_setup_s {
long integrityProtectionIndication;
long confidentialityProtectionIndication;
in_addr_t tlAddress;
in_addr_t tlAddress_dl;
int32_t teId;
int32_t teId_dl;
int tl_port;
int tl_port_dl;
long numDRB2Setup;
DRB_nGRAN_to_setup_t DRBnGRanList[E1AP_MAX_NUM_NGRAN_DRB];
} pdu_session_to_setup_t;
......
openair2/F1AP/f1ap_cu_task.c
View file @ 14a37e41
......@@ -186,7 +186,7 @@ void *F1AP_CU_task(void *arg) {
case F1AP_UE_CONTEXT_MODIFICATION_REQ:
LOG_I(F1AP, "CU Task received F1AP_UE_CONTEXT_MODIFICATION_REQ\n");
CU_send_UE_CONTEXT_MODIFICATION_REQUEST(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&F1AP_UE_CONTEXT_MODIFICATION_REQ(received_msg));
&F1AP_UE_CONTEXT_SETUP_REQ(received_msg));
break;
case F1AP_UE_CONTEXT_RELEASE_CMD: // from rrc
......
openair2/F1AP/f1ap_cu_ue_context_management.c
View file @ 14a37e41
......@@ -1483,22 +1483,6 @@ int CU_send_UE_CONTEXT_MODIFICATION_REQUEST(instance_t instance, f1ap_ue_context
/* 12.1.3 uLUPTNLInformation_ToBeSetup_List */
for (int j = 0; j < f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_ul_tnl_length; j++) {
/*Use a dummy teid for the outgoing GTP-U tunnel (DU) which will be updated once we get the UE context setup response from the DU*/
transport_layer_addr_t addr;
int sz=sizeof(f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_dl_tnl[0].tl_address);
memcpy(addr.buffer,&f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_dl_tnl[0].tl_address, sz);
addr.length = sz*8;
f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_ul_tnl[j].teid = newGtpuCreateTunnel(getCxt(CUtype, instance)->gtpInst,
f1ap_ue_context_modification_req->rnti,
f1ap_ue_context_modification_req->drbs_to_be_setup[i].drb_id,
f1ap_ue_context_modification_req->drbs_to_be_setup[i].drb_id,
0xFFFF, // We will set the right value from DU answer
-1, // no qfi
addr,
f1ap_ue_context_modification_req->drbs_to_be_setup[i].up_dl_tnl[0].port,
cu_f1u_data_req,
NULL);
/* 12.3.1 ULTunnels_ToBeSetup_Item */
asn1cSequenceAdd(drbs_toBeSetupMod_item->uLUPTNLInformation_ToBeSetup_List.list,
F1AP_ULUPTNLInformation_ToBeSetup_Item_t, uLUPTNLInformation_ToBeSetup_Item);
......
openair2/RRC/NR/rrc_gNB.c
View file @ 14a37e41
......@@ -101,6 +101,7 @@
#include <openair2/RRC/NR/nr_rrc_proto.h>
#include "LAYER2/nr_rlc/nr_rlc_oai_api.h"
#include "openair2/LAYER2/nr_pdcp/nr_pdcp_e1_api.h"
#include "openair2/F1AP/f1ap_common.h"
#include "BIT_STRING.h"
#include "assertions.h"
......@@ -4057,17 +4058,49 @@ int drb_config_gtpu_create_e1(e1ap_bearer_setup_req_t *req,
return ret;
}
int rrc_gNB_process_e1_bearer_context_setup_req(e1ap_bearer_setup_req_t *req, instance_t instance) {
void gNB_CU_create_up_ul_tunnel(e1ap_bearer_setup_resp_t *resp,
e1ap_bearer_setup_req_t *req,
instance_t instance,
ue_id_t ue_id) {
for (int i=0; i < req->numPDUSessions; i++) {
pdu_session_to_setup_t *pdu = req->pduSession + i;
transport_layer_addr_t addr;
int size = sizeof(pdu->tlAddress_dl);
memcpy(addr.buffer,
&pdu->tlAddress_dl,
size);
addr.length = size * 8;
resp->pduSession[i].tlAddress = pdu->tlAddress;
resp->pduSession[i].teId = newGtpuCreateTunnel(getCxt(CUtype, instance)->gtpInst,
ue_id,
pdu->DRBnGRanList[0].id,
pdu->DRBnGRanList[0].id,
0xFFFF, // We will set the right value from DU answer
-1, // no qfi
addr,
pdu->tl_port_dl,
cu_f1u_data_req,
NULL);
}
}
void rrc_gNB_process_e1_bearer_context_setup_req(e1ap_bearer_setup_req_t *req, instance_t instance) {
gtpv1u_gnb_create_tunnel_req_t create_tunnel_req={0};
gtpv1u_gnb_create_tunnel_resp_t create_tunnel_resp={0};
int ret = drb_config_gtpu_create_e1(req, &create_tunnel_req, &create_tunnel_resp, instance);
// GTP tunnel for UL
drb_config_gtpu_create_e1(req, &create_tunnel_req, &create_tunnel_resp, instance);
MessageDef *message_p;
message_p = itti_alloc_new_message (TASK_RRC_GNB, instance, E1AP_BEARER_CONTEXT_SETUP_RESP);
e1ap_bearer_setup_resp_t *resp = &E1AP_BEARER_CONTEXT_SETUP_RESP(message_p);
gNB_CU_create_up_ul_tunnel(resp, req, instance, req->gNB_cu_cp_ue_id);
resp->gNB_cu_cp_ue_id = req->gNB_cu_cp_ue_id;
resp->numPDUSessions = req->numPDUSessions;
for (int i=0; i < req->numPDUSessions; i++) {
......@@ -4107,11 +4140,11 @@ int rrc_gNB_process_e1_bearer_context_setup_req(e1ap_bearer_setup_req_t *req, in
}
itti_send_msg_to_task(TASK_CUUP_E1, instance, message_p);
return ret;
}
void prepare_and_send_ue_context_modification_f1(rrc_gNB_ue_context_t *ue_context_p) {
void prepare_and_send_ue_context_modification_f1(rrc_gNB_ue_context_t *ue_context_p,
e1ap_bearer_setup_resp_t *e1ap_resp,
e1ap_bearer_setup_req_t *e1ap_req) {
/*Generate a UE context modification request message towards the DU to instruct the DU
*for SRB2 and DRB configuration and get the updates on master cell group config from the DU*/
......@@ -4121,7 +4154,7 @@ void prepare_and_send_ue_context_modification_f1(rrc_gNB_ue_context_t *ue_contex
// TODO: So many hard codings
MessageDef *message_p;
message_p = itti_alloc_new_message (TASK_RRC_GNB, 0, F1AP_UE_CONTEXT_MODIFICATION_REQ);
f1ap_ue_context_setup_t *req=&F1AP_UE_CONTEXT_MODIFICATION_REQ (message_p);
f1ap_ue_context_setup_t *req=&F1AP_UE_CONTEXT_SETUP_REQ (message_p);
req->rnti = ue_context_p->ue_context.rnti;
req->mcc = RC.nrrrc[ctxt.module_id]->configuration.mcc[0];
req->mnc = RC.nrrrc[ctxt.module_id]->configuration.mnc[0];
......@@ -4136,18 +4169,20 @@ void prepare_and_send_ue_context_modification_f1(rrc_gNB_ue_context_t *ue_contex
SRBs[0].lcid = 2;
/*Instruction towards the DU for DRB configuration and tunnel creation*/
req->drbs_to_be_setup = malloc(1*sizeof(f1ap_drb_to_be_setup_t));
req->drbs_to_be_setup_length = 1;
f1ap_drb_to_be_setup_t *DRBs=req->drbs_to_be_setup;
LOG_D(RRC, "Length of DRB list:%d \n", req->drbs_to_be_setup_length);
DRBs[0].drb_id = 1;
DRBs[0].rlc_mode = RLC_MODE_AM;
DRBs[0].up_ul_tnl[0].tl_address = inet_addr(RC.nrrrc[ctxt.module_id]->eth_params_s.my_addr);
DRBs[0].up_ul_tnl[0].port=RC.nrrrc[ctxt.module_id]->eth_params_s.my_portd;
DRBs[0].up_ul_tnl_length = 1;
DRBs[0].up_dl_tnl[0].tl_address = inet_addr(RC.nrrrc[ctxt.module_id]->eth_params_s.remote_addr);
DRBs[0].up_dl_tnl[0].port=RC.nrrrc[ctxt.module_id]->eth_params_s.remote_portd;
DRBs[0].up_dl_tnl_length = 1;
req->drbs_to_be_setup_length = e1ap_req->numPDUSessions;
req->drbs_to_be_setup = malloc(1*sizeof(f1ap_drb_to_be_setup_t)*req->drbs_to_be_setup_length);
for (int i=0; i < e1ap_req->numPDUSessions; i++) {
f1ap_drb_to_be_setup_t *DRBs = req->drbs_to_be_setup + i;
DRBs[i].drb_id = e1ap_req->pduSession[i].DRBnGRanList[0].id;
DRBs[i].rlc_mode = RLC_MODE_AM;
DRBs[i].up_ul_tnl[0].tl_address = e1ap_req->pduSession[i].tlAddress;
DRBs[i].up_ul_tnl[0].port = e1ap_req->pduSession[i].tl_port;
DRBs[i].up_ul_tnl[0].teid = e1ap_resp->pduSession[i].teId;
DRBs[i].up_ul_tnl_length = 1;
DRBs[i].up_dl_tnl[0].tl_address = e1ap_req->pduSession[i].tlAddress_dl;
DRBs[i].up_dl_tnl[0].port = e1ap_req->pduSession[i].tl_port_dl;
DRBs[i].up_dl_tnl_length = 1;
}
itti_send_msg_to_task (TASK_CU_F1, ctxt.module_id, message_p);
}
......@@ -4160,6 +4195,8 @@ void bearer_context_setup_direct(e1ap_bearer_setup_req_t *req, instance_t instan
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, 0, GNB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0, 0);
fill_DRB_configList(&ctxt, ue_context_p);
// GTP tunnel for UL
int ret = drb_config_gtpu_create(&ctxt,
ue_context_p,
req,
......@@ -4171,7 +4208,19 @@ void bearer_context_setup_direct(e1ap_bearer_setup_req_t *req, instance_t instan
if(!NODE_IS_CU(RC.nrrrc[ctxt.module_id]->node_type)){
rrc_gNB_generate_dedicatedRRCReconfiguration(&ctxt, ue_context_p, NULL);
} else {
prepare_and_send_ue_context_modification_f1(ue_context_p);
for (int i=0; i < req->numPDUSessions; i++) {
pdu_session_to_setup_t *pdu = req->pduSession + i;
pdu->tlAddress = inet_addr(RC.nrrrc[ctxt.module_id]->eth_params_s.my_addr);
pdu->tl_port = RC.nrrrc[ctxt.module_id]->eth_params_s.my_portd;
pdu->tlAddress_dl = inet_addr(RC.nrrrc[ctxt.module_id]->eth_params_s.remote_addr);
pdu->tl_port_dl = RC.nrrrc[ctxt.module_id]->eth_params_s.remote_portd;
}
e1ap_bearer_setup_resp_t resp; // Used to store teids
gNB_CU_create_up_ul_tunnel(&resp, req, instance, ue_context_p->ue_context.rnti);
prepare_and_send_ue_context_modification_f1(ue_context_p, &resp, req);
}
// call the code that sends UE context modification message to DU
}
......@@ -4217,7 +4266,21 @@ void rrc_gNB_process_e1_bearer_context_setup_resp(e1ap_bearer_setup_resp_t *resp
ue_context_p->ue_context.setup_pdu_sessions += resp->numPDUSessions;
prepare_and_send_ue_context_modification_f1(ue_context_p);
// TODO: SV: combine e1ap_bearer_setup_req_t and e1ap_bearer_setup_resp_t and minimize assignments
e1ap_bearer_setup_req_t req;
req.numPDUSessions = resp->numPDUSessions;
for (int i=0; i < resp->numPDUSessions; i++) {
pdu_session_to_setup_t *pdu = req.pduSession + i;
pdu->DRBnGRanList[0].id = resp->pduSession[i].DRBnGRanList[0].id;
pdu->tlAddress = inet_addr(RC.nrrrc[ctxt.module_id]->eth_params_s.my_addr);
pdu->tl_port = RC.nrrrc[ctxt.module_id]->eth_params_s.my_portd;
pdu->tlAddress_dl = inet_addr(RC.nrrrc[ctxt.module_id]->eth_params_s.remote_addr);
pdu->tl_port_dl = RC.nrrrc[ctxt.module_id]->eth_params_s.remote_portd;
}
prepare_and_send_ue_context_modification_f1(ue_context_p, resp, &req);
}
///---------------------------------------------------------------------------------------------------------------///
......
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