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Correct F1-U TEID variable names, simplify code

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In e1_send_bearer_updates(), we send the DL (DU) TEID and address to the
CU-UP. Therefore, correct the variable names to reflect that the F1-U
information pertains to the DU.

Also, move the tunnel info update function f1u_dl_gtp_update() to a more
prominent place, and take the pointer to the struct containing the
"interesting" information.
This commit is contained in:
Robert Schmidt
2024-09-06 10:20:08 +02:00
parent 29d8e3ce3a
commit d00ac2031c
2 changed files with 14 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair2/RRC/NR/nr_rrc_defs.h
+6 -6
View File
@@ -169,10 +169,10 @@ typedef struct pdu_session_param_s {
* @brief F1-U tunnel configuration
*/
typedef struct f1u_tunnel_s {
/* Downlink F1-U Tunnel Endpoint Identifier (CU-UP/DU) */
uint32_t cuup_teid_f1u;
/* DL F1-U Transport Layer */
transport_layer_addr_t cuup_addr_f1u;
/* F1-U Tunnel Endpoint Identifier (on DU side) */
uint32_t teid;
/* Downlink F1-U Transport Layer (on DU side) */
transport_layer_addr_t addr;
} f1u_tunnel_t;
typedef struct drb_s {
@@ -203,8 +203,8 @@ typedef struct drb_s {
int cipheringDisabled;
} ext1;
} pdcp_config;
// F1-U
f1u_tunnel_t f1u_tunnel_config;
// F1-U Downlink Tunnel Config (on DU side)
f1u_tunnel_t du_tunnel_config;
} drb_t;
typedef enum {
openair2/RRC/NR/rrc_gNB.c
+8 -8
View File
@@ -828,8 +828,8 @@ static void cuup_notify_reestablishment(gNB_RRC_INST *rrc, gNB_RRC_UE_t *ue_p)
drb_e1->id = drb_id;
drb_e1->numDlUpParam = 1;
drb_t *drbs = &ue_p->established_drbs[drb_id];
memcpy(&drb_e1->DlUpParamList[0].tlAddress, &drbs->f1u_tunnel_config.cuup_addr_f1u.buffer, sizeof(uint8_t) * 4);
drb_e1->DlUpParamList[0].teId = drbs->f1u_tunnel_config.cuup_teid_f1u;
memcpy(&drb_e1->DlUpParamList[0].tlAddress, &drbs->du_tunnel_config.addr.buffer, sizeof(uint8_t) * 4);
drb_e1->DlUpParamList[0].teId = drbs->du_tunnel_config.teid;
/* PDCP configuration */
bearer_context_pdcp_config_t *pdcp_config = &drb_e1->pdcp_config;
drb_t *rrc_drb = get_drb(ue_p, drb_id);
@@ -1868,15 +1868,15 @@ static void fill_e1_bearer_modif(DRB_nGRAN_to_setup_t *drb_e1, const f1ap_drb_to
/**
* @brief Store F1-U DL TL and TEID in RRC
*/
static void f1u_gtp_update(f1u_tunnel_t *f1u, const f1ap_drb_to_be_setup_t *drb_f1)
static void f1u_dl_gtp_update(f1u_tunnel_t *f1u, const f1ap_up_tnl_t *p)
{
f1u->cuup_teid_f1u = drb_f1->up_dl_tnl[0].teid;
memcpy(&f1u->cuup_addr_f1u.buffer, &drb_f1->up_dl_tnl[0].tl_address, sizeof(uint8_t) * 4);
f1u->cuup_addr_f1u.length = sizeof(in_addr_t);
f1u->teid = p->teid;
memcpy(&f1u->addr.buffer, &p->tl_address, sizeof(uint8_t) * 4);
f1u->addr.length = sizeof(in_addr_t);
}
/* \brief use list of DRBs and send the corresponding bearer update message via
* E1 to the CU of this UE */
* E1 to the CU of this UE. Also updates TEID info internally */
static void e1_send_bearer_updates(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, int n, f1ap_drb_to_be_setup_t *drbs)
{
// we assume the same UE ID in CU-UP and CU-CP
@@ -1896,7 +1896,7 @@ static void e1_send_bearer_updates(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, int n, f
DevAssert(pdu_e1 != NULL);
pdu_e1->sessionId = pdu_ue->param.pdusession_id;
DRB_nGRAN_to_setup_t *drb_e1 = &pdu_e1->DRBnGRanModList[pdu_e1->numDRB2Modify];
f1u_gtp_update(&UE->established_drbs[drb_f1->drb_id].f1u_tunnel_config, drb_f1);
f1u_dl_gtp_update(&UE->established_drbs[drb_f1->drb_id].du_tunnel_config, &drb_f1->up_dl_tnl[0]);
/* Fill E1 bearer context modification */
fill_e1_bearer_modif(drb_e1, drb_f1);
pdu_e1->numDRB2Modify += 1;