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Add extract_sys_info(): refactor DU cell sys_info handling in own function

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This commit is contained in:
Robert Schmidt
2024-05-06 11:17:20 +02:00
parent 9518e00923
commit 1bd6018f91
1 changed files with 35 additions and 19 deletions
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openair2/RRC/NR/rrc_gNB_du.c
+35 -19
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@@ -49,6 +49,39 @@ static bool rrc_gNB_plmn_matches(const gNB_RRC_INST *rrc, const f1ap_served_cell
&& conf->mnc[0] == info->plmn.mnc;
}
static bool extract_sys_info(const f1ap_gnb_du_system_info_t *sys_info, NR_BCCH_BCH_Message_t **mib, NR_SIB1_t **sib1)
{
DevAssert(sys_info != NULL);
DevAssert(mib != NULL);
DevAssert(sib1 != NULL);
asn_dec_rval_t dec_rval =
uper_decode_complete(NULL, &asn_DEF_NR_BCCH_BCH_Message, (void **)mib, sys_info->mib, sys_info->mib_length);
if (dec_rval.code != RC_OK || (*mib)->message.present != NR_BCCH_BCH_MessageType_PR_mib
|| (*mib)->message.choice.messageClassExtension == NULL) {
LOG_E(RRC, "Failed to decode NR_BCCH_BCH_MESSAGE (%zu bits) of DU\n", dec_rval.consumed);
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, *mib);
return false;
}
if (sys_info->sib1) {
dec_rval = uper_decode_complete(NULL, &asn_DEF_NR_SIB1, (void **)sib1, sys_info->sib1, sys_info->sib1_length);
if (dec_rval.code != RC_OK) {
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, *mib);
ASN_STRUCT_FREE(asn_DEF_NR_SIB1, *sib1);
LOG_E(RRC, "Failed to decode NR_SIB1 (%zu bits), rejecting DU\n", dec_rval.consumed);
return false;
}
}
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_BCCH_BCH_Message, *mib);
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_SIB1, *sib1);
return true;
}
void rrc_gNB_process_f1_setup_req(f1ap_setup_req_t *req, sctp_assoc_t assoc_id)
{
AssertFatal(assoc_id != 0, "illegal assoc_id == 0: should be -1 (monolithic) or >0 (split)\n");
@@ -116,29 +149,12 @@ void rrc_gNB_process_f1_setup_req(f1ap_setup_req_t *req, sctp_assoc_t assoc_id)
NR_SIB1_t *sib1 = NULL;
if (sys_info != NULL && sys_info->mib != NULL && !(sys_info->sib1 == NULL && get_softmodem_params()->sa)) {
asn_dec_rval_t dec_rval =
uper_decode_complete(NULL, &asn_DEF_NR_BCCH_BCH_Message, (void **)&mib, sys_info->mib, sys_info->mib_length);
if (dec_rval.code != RC_OK || mib->message.present != NR_BCCH_BCH_MessageType_PR_mib
|| mib->message.choice.messageClassExtension == NULL) {
LOG_E(RRC, "Failed to decode NR_BCCH_BCH_MESSAGE (%zu bits) of DU, rejecting DU\n", dec_rval.consumed);
if (!extract_sys_info(sys_info, &mib, &sib1)) {
LOG_W(RRC, "rejecting DU ID %ld\n", req->gNB_DU_id);
f1ap_setup_failure_t fail = {.cause = F1AP_CauseProtocol_semantic_error};
rrc->mac_rrc.f1_setup_failure(assoc_id, &fail);
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, mib);
return;
}
if (sys_info->sib1) {
dec_rval = uper_decode_complete(NULL, &asn_DEF_NR_SIB1, (void **)&sib1, sys_info->sib1, sys_info->sib1_length);
if (dec_rval.code != RC_OK) {
LOG_E(RRC, "Failed to decode NR_SIB1 (%zu bits) of DU, rejecting DU\n", dec_rval.consumed);
f1ap_setup_failure_t fail = {.cause = F1AP_CauseProtocol_semantic_error};
rrc->mac_rrc.f1_setup_failure(assoc_id, &fail);
ASN_STRUCT_FREE(asn_DEF_NR_SIB1, sib1);
return;
}
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_SIB1, sib1);
}
}
LOG_I(RRC, "Accepting DU %ld (%s), sending F1 Setup Response\n", req->gNB_DU_id, req->gNB_DU_name);
LOG_I(RRC, "DU uses RRC version %u.%u.%u\n", req->rrc_ver[0], req->rrc_ver[1], req->rrc_ver[2]);