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Handle GTP for DL in F1AP message encoder

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This commit is contained in:
Robert Schmidt
2023-05-26 08:31:45 +02:00
parent a47d4aee02
commit 62ca311a1a
2 changed files with 27 additions and 34 deletions
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openair2/F1AP/f1ap_du_ue_context_management.c
+27 -17
View File
@@ -37,29 +37,24 @@
#include "f1ap_du_ue_context_management.h"
#include "openair2/LAYER2/NR_MAC_gNB/mac_rrc_dl_handler.h"
#include "rrc_extern.h"
#include "openair2/RRC/NR/rrc_gNB_UE_context.h"
#include "openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h"
#include <openair3/ocp-gtpu/gtp_itf.h>
bool lteDURecvCb(protocol_ctxt_t *ctxt_pP,
const srb_flag_t srb_flagP,
const rb_id_t rb_idP,
const mui_t muiP,
const confirm_t confirmP,
const sdu_size_t sdu_buffer_sizeP,
unsigned char *const sdu_buffer_pP,
const pdcp_transmission_mode_t modeP,
const uint32_t *sourceL2Id,
const uint32_t *destinationL2Id) {
bool DURecvCb(protocol_ctxt_t *ctxt_pP,
const srb_flag_t srb_flagP,
const rb_id_t rb_idP,
const mui_t muiP,
const confirm_t confirmP,
const sdu_size_t sdu_buffer_sizeP,
unsigned char *const sdu_buffer_pP,
const pdcp_transmission_mode_t modeP,
const uint32_t *sourceL2Id,
const uint32_t *destinationL2Id)
{
// The buffer comes from the stack in gtp-u thread, we have a make a separate buffer to enqueue in a inter-thread message queue
mem_block_t *sdu=get_free_mem_block(sdu_buffer_sizeP, __func__);
memcpy(sdu->data, sdu_buffer_pP, sdu_buffer_sizeP);
// weird rb id management in 4G, not fully understand (looks bad design)
// overcomplex: if i understand, on the interface DRB start at 4 because there can be SRB 0..3
// but it would be much simpler to use absolute numbering
// instead of this "srb flag" associated to these +/-4
du_rlc_data_req(ctxt_pP,srb_flagP, false, rb_idP-4,muiP, confirmP, sdu_buffer_sizeP, sdu);
du_rlc_data_req(ctxt_pP, srb_flagP, false, rb_idP, muiP, confirmP, sdu_buffer_sizeP, sdu);
return true;
}
@@ -1058,6 +1053,21 @@ int DU_send_UE_CONTEXT_MODIFICATION_RESPONSE(instance_t instance, f1ap_ue_contex
drbs_setupmod_item->dRBID = resp->drbs_to_be_setup[i].drb_id;
for (int j=0; j<resp->drbs_to_be_setup[i].up_dl_tnl_length; j++) {
f1ap_drb_to_be_setup_t *drb = &resp->drbs_to_be_setup[i];
transport_layer_addr_t tl_addr = {0};
memcpy(tl_addr.buffer, &drb->up_ul_tnl[0].tl_address, sizeof(drb->up_ul_tnl[0].tl_address));
tl_addr.length = sizeof(drb->up_ul_tnl[0].tl_address) * 8;
drb->up_dl_tnl[j].teid = newGtpuCreateTunnel(getCxt(false, instance)->gtpInst,
resp->rnti,
drb->drb_id,
drb->drb_id,
drb->up_ul_tnl[j].teid,
-1, // no qfi
tl_addr,
drb->up_ul_tnl[0].port,
DURecvCb,
NULL);
/* ADD */
asn1cSequenceAdd(drbs_setupmod_item->dLUPTNLInformation_ToBeSetup_List.list,
F1AP_DLUPTNLInformation_ToBeSetup_Item_t, dLUPTNLInformation_ToBeSetup_Item);
openair2/RRC/NR/rrc_gNB.c
-17
View File
@@ -111,23 +111,6 @@ mui_t rrc_gNB_mui = 0;
///---------------------------------------------------------------------------------------------------------------///
///---------------------------------------------------------------------------------------------------------------///
bool DURecvCb(protocol_ctxt_t *ctxt_pP,
const srb_flag_t srb_flagP,
const rb_id_t rb_idP,
const mui_t muiP,
const confirm_t confirmP,
const sdu_size_t sdu_buffer_sizeP,
unsigned char *const sdu_buffer_pP,
const pdcp_transmission_mode_t modeP,
const uint32_t *sourceL2Id,
const uint32_t *destinationL2Id) {
// The buffer comes from the stack in gtp-u thread, we have a make a separate buffer to enqueue in a inter-thread message queue
mem_block_t *sdu=get_free_mem_block(sdu_buffer_sizeP, __func__);
memcpy(sdu->data, sdu_buffer_pP, sdu_buffer_sizeP);
du_rlc_data_req(ctxt_pP,srb_flagP, false, rb_idP,muiP, confirmP, sdu_buffer_sizeP, sdu);
return true;
}
static void nr_rrc_addmod_srbs(int rnti,
const NR_SRB_ToAddModList_t *srb_list,
const struct NR_CellGroupConfig__rlc_BearerToAddModList *bearer_list)