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Store DRB UL TEID information at RRC

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To be used later in the case of handover.
This commit is contained in:
Robert Schmidt
2024-09-06 10:20:08 +02:00
parent 605dfa0142
commit e7eb1b1c3b
2 changed files with 21 additions and 0 deletions
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openair2/RRC/NR/nr_rrc_defs.h
+2
View File
@@ -205,6 +205,8 @@ typedef struct drb_s {
} pdcp_config;
// F1-U Downlink Tunnel Config (on DU side)
f1u_tunnel_t du_tunnel_config;
// F1-U Uplink Tunnel Config (on CU-UP side)
f1u_tunnel_t cuup_tunnel_config;
} drb_t;
typedef enum {
openair2/RRC/NR/rrc_gNB.c
+19
View File
@@ -1889,6 +1889,16 @@ static void store_du_f1u_tunnel(const f1ap_drb_to_be_setup_t *drbs, int n, gNB_R
}
}
/*
* @brief Store F1-U UL TEID and address in RRC
*/
static void f1u_ul_gtp_update(f1u_tunnel_t *f1u, const up_params_t *p)
{
f1u->teid = p->teId;
memcpy(&f1u->addr.buffer, &p->tlAddress, 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. 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)
@@ -2165,6 +2175,15 @@ void rrc_gNB_process_e1_bearer_context_setup_resp(e1ap_bearer_setup_resp_t *resp
rrc_pdu->param.gNB_teid_N3 = e1_pdu->teId;
memcpy(&rrc_pdu->param.gNB_addr_N3.buffer, &e1_pdu->tlAddress, sizeof(uint8_t) * 4);
rrc_pdu->param.gNB_addr_N3.length = sizeof(in_addr_t);
// save the tunnel address for the DRBs
for (int i = 0; i < e1_pdu->numDRBSetup; i++) {
DRB_nGRAN_setup_t *drb_config = &e1_pdu->DRBnGRanList[i];
// numUpParam only relevant in F1, but not monolithic
AssertFatal(drb_config->numUpParam <= 1, "can only up to one UP param\n");
drb_t *drb = get_drb(UE, drb_config->id);
f1u_ul_gtp_update(&drb->cuup_tunnel_config, &drb_config->UpParamList[0]);
}
}
/* Instruction towards the DU for DRB configuration and tunnel creation */