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Changed the rest of the nas handling to use send_downlink_nas_transport.

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master
Pedro Alvarez 6 years ago
parent f1d30c7f23
commit e3286897ce
3 changed files with 59 additions and 193 deletions
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12
srsepc/hdr/mme/nas.h
Unescape Escape View File

@ -183,12 +183,12 @@ public:
/* Uplink NAS messages handling */ /* Uplink NAS messages handling */
bool handle_authentication_response( srslte::byte_buffer_t *nas_rx); bool handle_authentication_response( srslte::byte_buffer_t *nas_rx);
bool handle_security_mode_complete( srslte::byte_buffer_t *nas_rx); bool handle_security_mode_complete( srslte::byte_buffer_t *nas_rx);
bool handle_attach_complete( srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_buffer, bool *reply_flag); bool handle_attach_complete( srslte::byte_buffer_t *nas_rx);
bool handle_esm_information_response( srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_buffer, bool *reply_flag); bool handle_esm_information_response( srslte::byte_buffer_t *nas_rx);
bool handle_identity_response( srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_buffer, bool *reply_flag); bool handle_identity_response( srslte::byte_buffer_t *nas_rx);
bool handle_tracking_area_update_request( srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_buffer, bool *reply_flag); bool handle_tracking_area_update_request( srslte::byte_buffer_t *nas_rx);
bool handle_authentication_failure( srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_buffer, bool *reply_flag); bool handle_authentication_failure( srslte::byte_buffer_t *nas_rx);
bool handle_nas_detach_request( srslte::byte_buffer_t *nas_msg); bool handle_nas_detach_request( srslte::byte_buffer_t *nas_rx);
/* Downlink NAS messages packing */ /* Downlink NAS messages packing */
bool pack_authentication_request (srslte::byte_buffer_t *nas_buffer); bool pack_authentication_request (srslte::byte_buffer_t *nas_buffer);

222
srsepc/src/mme/nas.cc
Unescape Escape View File

@ -593,18 +593,15 @@ nas::handle_security_mode_complete(srslte::byte_buffer_t *nas_rx)
bool bool
nas::handle_attach_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, bool *reply_flag) nas::handle_attach_complete(srslte::byte_buffer_t *nas_rx)
{ {
LIBLTE_MME_ATTACH_COMPLETE_MSG_STRUCT attach_comp; LIBLTE_MME_ATTACH_COMPLETE_MSG_STRUCT attach_comp;
uint8_t pd, msg_type; uint8_t pd, msg_type;
srslte::byte_buffer_t *esm_msg = m_pool->allocate();
LIBLTE_MME_ACTIVATE_DEFAULT_EPS_BEARER_CONTEXT_ACCEPT_MSG_STRUCT act_bearer; LIBLTE_MME_ACTIVATE_DEFAULT_EPS_BEARER_CONTEXT_ACCEPT_MSG_STRUCT act_bearer;
srslte::byte_buffer_t *nas_tx;
m_nas_log->info_hex(nas_msg->msg, nas_msg->N_bytes, "NAS Attach complete");
//Get NAS authentication response //Get NAS authentication response
LIBLTE_ERROR_ENUM err = liblte_mme_unpack_attach_complete_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &attach_comp); LIBLTE_ERROR_ENUM err = liblte_mme_unpack_attach_complete_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_rx, &attach_comp);
if(err != LIBLTE_SUCCESS){ if(err != LIBLTE_SUCCESS){
m_nas_log->error("Error unpacking NAS authentication response. Error: %s\n", liblte_error_text[err]); m_nas_log->error("Error unpacking NAS authentication response. Error: %s\n", liblte_error_text[err]);
return false; return false;
@ -618,6 +615,7 @@ nas::handle_attach_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_
m_nas_log->console("Unpacked Attached Complete Message. IMSI %" PRIu64 "\n", m_emm_ctx.imsi); m_nas_log->console("Unpacked Attached Complete Message. IMSI %" PRIu64 "\n", m_emm_ctx.imsi);
m_nas_log->console("Unpacked Activate Default EPS Bearer message. EPS Bearer id %d\n",act_bearer.eps_bearer_id); m_nas_log->console("Unpacked Activate Default EPS Bearer message. EPS Bearer id %d\n",act_bearer.eps_bearer_id);
if (act_bearer.eps_bearer_id < 5 || act_bearer.eps_bearer_id > 15) { if (act_bearer.eps_bearer_id < 5 || act_bearer.eps_bearer_id > 15) {
m_nas_log->error("EPS Bearer ID out of range\n"); m_nas_log->error("EPS Bearer ID out of range\n");
return false; return false;
@ -625,10 +623,15 @@ nas::handle_attach_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_
if (m_emm_ctx.state == EMM_STATE_DEREGISTERED) { if (m_emm_ctx.state == EMM_STATE_DEREGISTERED) {
//Attach requested from attach request //Attach requested from attach request
m_gtpc->send_modify_bearer_request(m_emm_ctx.imsi, act_bearer.eps_bearer_id, &m_esm_ctx[act_bearer.eps_bearer_id].enb_fteid); m_gtpc->send_modify_bearer_request(m_emm_ctx.imsi, act_bearer.eps_bearer_id, &m_esm_ctx[act_bearer.eps_bearer_id].enb_fteid);
//Send reply to eNB
m_nas_log->console("Packing EMM Information\n"); //Send reply to EMM Info to UE
*reply_flag = pack_emm_information(reply_msg); nas_tx = m_pool->allocate();
m_nas_log->console("Sending EMM Information, bytes %d\n",reply_msg->N_bytes); pack_emm_information(nas_tx);
m_s1ap->send_downlink_nas_transport(m_ecm_ctx.enb_ue_s1ap_id, m_ecm_ctx.mme_ue_s1ap_id, nas_tx, m_ecm_ctx.enb_sri);
m_pool->deallocate(nas_tx);
m_nas_log->console("Sending EMM Information");
m_nas_log->info("Sending EMM Information\n"); m_nas_log->info("Sending EMM Information\n");
} }
m_emm_ctx.state = EMM_STATE_REGISTERED; m_emm_ctx.state = EMM_STATE_REGISTERED;
@ -636,12 +639,12 @@ nas::handle_attach_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_
} }
bool bool
nas::handle_esm_information_response(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, bool *reply_flag) nas::handle_esm_information_response(srslte::byte_buffer_t *nas_rx)
{ {
LIBLTE_MME_ESM_INFORMATION_RESPONSE_MSG_STRUCT esm_info_resp; LIBLTE_MME_ESM_INFORMATION_RESPONSE_MSG_STRUCT esm_info_resp;
//Get NAS authentication response //Get NAS authentication response
LIBLTE_ERROR_ENUM err = srslte_mme_unpack_esm_information_response_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &esm_info_resp); LIBLTE_ERROR_ENUM err = srslte_mme_unpack_esm_information_response_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_rx, &esm_info_resp);
if(err != LIBLTE_SUCCESS){ if(err != LIBLTE_SUCCESS){
m_nas_log->error("Error unpacking NAS authentication response. Error: %s\n", liblte_error_text[err]); m_nas_log->error("Error unpacking NAS authentication response. Error: %s\n", liblte_error_text[err]);
return false; return false;
@ -670,14 +673,12 @@ nas::handle_esm_information_response(srslte::byte_buffer_t *nas_msg, srslte::byt
} }
bool bool
nas::handle_identity_response(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, bool *reply_flag) nas::handle_identity_response(srslte::byte_buffer_t *nas_rx)
{ {
uint8_t autn[16]; srslte::byte_buffer_t *nas_tx;
uint8_t rand[16];
uint8_t xres[8];
LIBLTE_MME_ID_RESPONSE_MSG_STRUCT id_resp; LIBLTE_MME_ID_RESPONSE_MSG_STRUCT id_resp;
LIBLTE_ERROR_ENUM err = liblte_mme_unpack_identity_response_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &id_resp);
LIBLTE_ERROR_ENUM err = liblte_mme_unpack_identity_response_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_rx, &id_resp);
if(err != LIBLTE_SUCCESS){ if(err != LIBLTE_SUCCESS){
m_nas_log->error("Error unpacking NAS identity response. Error: %s\n", liblte_error_text[err]); m_nas_log->error("Error unpacking NAS identity response. Error: %s\n", liblte_error_text[err]);
return false; return false;
@ -707,83 +708,39 @@ nas::handle_identity_response(srslte::byte_buffer_t *nas_msg, srslte::byte_buffe
m_s1ap->add_nas_ctx_to_imsi_map(this); m_s1ap->add_nas_ctx_to_imsi_map(this);
//Pack NAS Authentication Request in Downlink NAS Transport msg //Pack NAS Authentication Request in Downlink NAS Transport msg
pack_authentication_request(reply_msg); nas_tx = m_pool->allocate();
pack_authentication_request(nas_tx);
//Send reply to eNB //Send reply to eNB
*reply_flag = true; m_s1ap->send_downlink_nas_transport(m_ecm_ctx.enb_ue_s1ap_id, m_ecm_ctx.mme_ue_s1ap_id, nas_tx, m_ecm_ctx.enb_sri);
m_pool->deallocate(nas_tx);
m_nas_log->info("Downlink NAS: Sent Authentication Request\n"); m_nas_log->info("Downlink NAS: Sent Authentication Request\n");
m_nas_log->console("Downlink NAS: Sent Authentication Request\n"); m_nas_log->console("Downlink NAS: Sent Authentication Request\n");
//TODO Start T3460 Timer!
return true; return true;
} }
bool bool
nas::handle_tracking_area_update_request(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, bool *reply_flag) nas::handle_tracking_area_update_request(srslte::byte_buffer_t *nas_rx)
{ {
m_nas_log->console("Warning: Tracking Area Update Request messages not handled yet.\n"); m_nas_log->console("Warning: Tracking Area Update Request messages not handled yet.\n");
m_nas_log->warning("Warning: Tracking Area Update Request messages not handled yet.\n"); m_nas_log->warning("Warning: Tracking Area Update Request messages not handled yet.\n");
//Setup initiating message
LIBLTE_S1AP_S1AP_PDU_STRUCT tx_pdu;
bzero(&tx_pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
tx_pdu.ext = false;
tx_pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_INITIATINGMESSAGE;
LIBLTE_S1AP_INITIATINGMESSAGE_STRUCT *init = &tx_pdu.choice.initiatingMessage;
init->procedureCode = LIBLTE_S1AP_PROC_ID_DOWNLINKNASTRANSPORT;
init->choice_type = LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_DOWNLINKNASTRANSPORT;
//Setup Dw NAS structure
LIBLTE_S1AP_MESSAGE_DOWNLINKNASTRANSPORT_STRUCT *dw_nas = &init->choice.DownlinkNASTransport;
dw_nas->ext=false;
dw_nas->MME_UE_S1AP_ID.MME_UE_S1AP_ID = m_ecm_ctx.mme_ue_s1ap_id;
dw_nas->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID = m_ecm_ctx.enb_ue_s1ap_id;
dw_nas->HandoverRestrictionList_present=false;
dw_nas->SubscriberProfileIDforRFP_present=false;
//m_nas_log->console("Tracking area accept to MME-UE S1AP Id %d\n", ue_ctx->mme_ue_s1ap_id);
LIBLTE_MME_TRACKING_AREA_UPDATE_ACCEPT_MSG_STRUCT tau_acc;
//T3412 Timer
tau_acc.t3412_present = true;
tau_acc.t3412.unit = LIBLTE_MME_GPRS_TIMER_UNIT_1_MINUTE; // GPRS 1 minute unit
tau_acc.t3412.value = 30; // 30 minute periodic timer
//GUTI
tau_acc.guti_present=true;
tau_acc.guti.type_of_id = 6; //110 -> GUTI
tau_acc.guti.guti.mcc = m_mcc;
tau_acc.guti.guti.mnc = m_mnc;
tau_acc.guti.guti.mme_group_id = m_mme_group;
tau_acc.guti.guti.mme_code = m_mme_code;
tau_acc.guti.guti.m_tmsi = 0xF000;
m_nas_log->debug("Allocated GUTI: MCC %d, MNC %d, MME Group Id %d, MME Code 0x%x, M-TMSI 0x%x\n",
tau_acc.guti.guti.mcc,
tau_acc.guti.guti.mnc,
tau_acc.guti.guti.mme_group_id,
tau_acc.guti.guti.mme_code,
tau_acc.guti.guti.m_tmsi);
//Unused Options
tau_acc.t3402_present = false;
tau_acc.t3423_present = false;
tau_acc.equivalent_plmns_present = false;
tau_acc.emerg_num_list_present = false;
tau_acc.eps_network_feature_support_present = false;
tau_acc.additional_update_result_present = false;
tau_acc.t3412_ext_present = false;
return true; return true;
} }
bool bool
nas::handle_authentication_failure(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, bool *reply_flag) nas::handle_authentication_failure(srslte::byte_buffer_t *nas_rx)
{ {
m_nas_log->info("Received Authentication Failure\n");
srslte::byte_buffer_t *nas_tx;
LIBLTE_MME_AUTHENTICATION_FAILURE_MSG_STRUCT auth_fail; LIBLTE_MME_AUTHENTICATION_FAILURE_MSG_STRUCT auth_fail;
LIBLTE_ERROR_ENUM err = liblte_mme_unpack_authentication_failure_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &auth_fail); LIBLTE_ERROR_ENUM err;
err = liblte_mme_unpack_authentication_failure_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_rx, &auth_fail);
if(err != LIBLTE_SUCCESS){ if(err != LIBLTE_SUCCESS){
m_nas_log->error("Error unpacking NAS authentication failure. Error: %s\n", liblte_error_text[err]); m_nas_log->error("Error unpacking NAS authentication failure. Error: %s\n", liblte_error_text[err]);
return false; return false;
@ -821,14 +778,16 @@ nas::handle_authentication_failure(srslte::byte_buffer_t *nas_msg, srslte::byte_
m_sec_ctx.eksi = (m_sec_ctx.eksi+1)%6; m_sec_ctx.eksi = (m_sec_ctx.eksi+1)%6;
//Pack NAS Authentication Request in Downlink NAS Transport msg //Pack NAS Authentication Request in Downlink NAS Transport msg
pack_authentication_request(reply_msg); nas_tx = m_pool->allocate();
pack_authentication_request(nas_tx);
//Send reply to eNB //Send reply to eNB
*reply_flag = true; m_s1ap->send_downlink_nas_transport(m_ecm_ctx.enb_ue_s1ap_id, m_ecm_ctx.mme_ue_s1ap_id, nas_tx, m_ecm_ctx.enb_sri);
m_pool->deallocate(nas_tx);
m_nas_log->info("Downlink NAS: Sent Authentication Request\n"); m_nas_log->info("Downlink NAS: Sent Authentication Request\n");
m_nas_log->console("Downlink NAS: Sent Authentication Request\n"); m_nas_log->console("Downlink NAS: Sent Authentication Request\n");
//TODO Start T3460 Timer! //TODO Start T3460 Timer!
break; break;
} }
return true; return true;
@ -879,27 +838,9 @@ nas::pack_authentication_request(srslte::byte_buffer_t *nas_buffer)
} }
bool bool
nas::pack_authentication_reject(srslte::byte_buffer_t *reply_msg) nas::pack_authentication_reject(srslte::byte_buffer_t *nas_buffer)
{ {
srslte::byte_buffer_t *nas_buffer = m_pool->allocate(); m_nas_log->info("Packing Authentication Reject\n");
LIBLTE_S1AP_S1AP_PDU_STRUCT tx_pdu;
bzero(&tx_pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
tx_pdu.ext = false;
tx_pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_INITIATINGMESSAGE;
LIBLTE_S1AP_INITIATINGMESSAGE_STRUCT *init = &tx_pdu.choice.initiatingMessage;
init->procedureCode = LIBLTE_S1AP_PROC_ID_DOWNLINKNASTRANSPORT;
init->choice_type = LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_DOWNLINKNASTRANSPORT;
//Setup Dw NAS structure
LIBLTE_S1AP_MESSAGE_DOWNLINKNASTRANSPORT_STRUCT *dw_nas = &init->choice.DownlinkNASTransport;
dw_nas->ext=false;
dw_nas->MME_UE_S1AP_ID.MME_UE_S1AP_ID = m_ecm_ctx.mme_ue_s1ap_id;
dw_nas->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID = m_ecm_ctx.enb_ue_s1ap_id;
dw_nas->HandoverRestrictionList_present=false;
dw_nas->SubscriberProfileIDforRFP_present=false;
LIBLTE_MME_AUTHENTICATION_REJECT_MSG_STRUCT auth_rej; LIBLTE_MME_AUTHENTICATION_REJECT_MSG_STRUCT auth_rej;
LIBLTE_ERROR_ENUM err = liblte_mme_pack_authentication_reject_msg(&auth_rej, (LIBLTE_BYTE_MSG_STRUCT *) nas_buffer); LIBLTE_ERROR_ENUM err = liblte_mme_pack_authentication_reject_msg(&auth_rej, (LIBLTE_BYTE_MSG_STRUCT *) nas_buffer);
@ -908,20 +849,6 @@ nas::pack_authentication_reject(srslte::byte_buffer_t *reply_msg)
m_nas_log->console("Error packing Authentication Reject\n"); m_nas_log->console("Error packing Authentication Reject\n");
return false; return false;
} }
//Copy NAS PDU to Downlink NAS Trasport message buffer
memcpy(dw_nas->NAS_PDU.buffer, nas_buffer->msg, nas_buffer->N_bytes);
dw_nas->NAS_PDU.n_octets = nas_buffer->N_bytes;
//Pack Downlink NAS Transport Message
err = liblte_s1ap_pack_s1ap_pdu(&tx_pdu, (LIBLTE_BYTE_MSG_STRUCT *) reply_msg);
if (err != LIBLTE_SUCCESS) {
m_nas_log->error("Error packing Dw NAS Transport: Authentication Reject\n");
m_nas_log->console("Error packing Downlink NAS Transport: Authentication Reject\n");
return false;
}
m_pool->deallocate(nas_buffer);
return true; return true;
} }
@ -1030,6 +957,7 @@ bool
nas::pack_attach_accept(srslte::byte_buffer_t *nas_buffer) nas::pack_attach_accept(srslte::byte_buffer_t *nas_buffer)
{ {
m_nas_log->info("Packing Attach Accept\n"); m_nas_log->info("Packing Attach Accept\n");
LIBLTE_MME_ATTACH_ACCEPT_MSG_STRUCT attach_accept; LIBLTE_MME_ATTACH_ACCEPT_MSG_STRUCT attach_accept;
LIBLTE_MME_ACTIVATE_DEFAULT_EPS_BEARER_CONTEXT_REQUEST_MSG_STRUCT act_def_eps_bearer_context_req; LIBLTE_MME_ACTIVATE_DEFAULT_EPS_BEARER_CONTEXT_REQUEST_MSG_STRUCT act_def_eps_bearer_context_req;
@ -1171,28 +1099,9 @@ nas::pack_identity_request(srslte::byte_buffer_t *nas_buffer)
} }
bool bool
nas::pack_emm_information(srslte::byte_buffer_t *reply_msg) nas::pack_emm_information(srslte::byte_buffer_t *nas_buffer)
{ {
srslte::byte_buffer_t *nas_buffer = m_pool->allocate(); m_nas_log->info("Packing EMM Information\n");
//Setup initiating message
LIBLTE_S1AP_S1AP_PDU_STRUCT tx_pdu;
bzero(&tx_pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
tx_pdu.ext = false;
tx_pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_INITIATINGMESSAGE;
LIBLTE_S1AP_INITIATINGMESSAGE_STRUCT *init = &tx_pdu.choice.initiatingMessage;
init->procedureCode = LIBLTE_S1AP_PROC_ID_DOWNLINKNASTRANSPORT;
init->choice_type = LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_DOWNLINKNASTRANSPORT;
//Setup Dw NAS structure
LIBLTE_S1AP_MESSAGE_DOWNLINKNASTRANSPORT_STRUCT *dw_nas = &init->choice.DownlinkNASTransport;
dw_nas->ext=false;
dw_nas->MME_UE_S1AP_ID.MME_UE_S1AP_ID = m_ecm_ctx.mme_ue_s1ap_id;
dw_nas->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID = m_ecm_ctx.enb_ue_s1ap_id;
dw_nas->HandoverRestrictionList_present=false;
dw_nas->SubscriberProfileIDforRFP_present=false;
LIBLTE_MME_EMM_INFORMATION_MSG_STRUCT emm_info; LIBLTE_MME_EMM_INFORMATION_MSG_STRUCT emm_info;
emm_info.full_net_name_present = true; emm_info.full_net_name_present = true;
@ -1224,48 +1133,17 @@ nas::pack_emm_information(srslte::byte_buffer_t *reply_msg)
nas_buffer->N_bytes - 5, nas_buffer->N_bytes - 5,
mac mac
); );
memcpy(&nas_buffer->msg[1],mac,4); memcpy(&nas_buffer->msg[1],mac,4);
//Copy NAS PDU to Downlink NAS Trasport message buffer
memcpy(dw_nas->NAS_PDU.buffer, nas_buffer->msg, nas_buffer->N_bytes);
dw_nas->NAS_PDU.n_octets = nas_buffer->N_bytes;
//Pack Downlink NAS Transport Message
err = liblte_s1ap_pack_s1ap_pdu(&tx_pdu, (LIBLTE_BYTE_MSG_STRUCT *) reply_msg);
if (err != LIBLTE_SUCCESS) {
m_nas_log->error("Error packing Dw NAS Transport: EMM Info\n");
m_nas_log->console("Error packing Downlink NAS Transport: EMM Info\n");
return false;
}
m_nas_log->info("Packed UE EMM information\n"); m_nas_log->info("Packed UE EMM information\n");
return true; return true;
} }
bool bool
nas::pack_service_reject(srslte::byte_buffer_t *reply_msg) nas::pack_service_reject(srslte::byte_buffer_t *nas_buffer)
{ {
uint8_t emm_cause = LIBLTE_MME_EMM_CAUSE_IMPLICITLY_DETACHED; uint8_t emm_cause = LIBLTE_MME_EMM_CAUSE_IMPLICITLY_DETACHED;
srslte::byte_buffer_t *nas_buffer = m_pool->allocate();
//Setup initiating message
LIBLTE_S1AP_S1AP_PDU_STRUCT tx_pdu;
bzero(&tx_pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
tx_pdu.ext = false;
tx_pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_INITIATINGMESSAGE;
LIBLTE_S1AP_INITIATINGMESSAGE_STRUCT *init = &tx_pdu.choice.initiatingMessage;
init->procedureCode = LIBLTE_S1AP_PROC_ID_DOWNLINKNASTRANSPORT;
init->choice_type = LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_DOWNLINKNASTRANSPORT;
//Setup Dw NAS structure
LIBLTE_S1AP_MESSAGE_DOWNLINKNASTRANSPORT_STRUCT *dw_nas = &init->choice.DownlinkNASTransport;
dw_nas->ext=false;
dw_nas->MME_UE_S1AP_ID.MME_UE_S1AP_ID = m_s1ap->get_next_mme_ue_s1ap_id();
dw_nas->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID = m_ecm_ctx.enb_ue_s1ap_id;
dw_nas->HandoverRestrictionList_present=false;
dw_nas->SubscriberProfileIDforRFP_present=false;
LIBLTE_MME_SERVICE_REJECT_MSG_STRUCT service_rej; LIBLTE_MME_SERVICE_REJECT_MSG_STRUCT service_rej;
service_rej.t3442_present = true; service_rej.t3442_present = true;
service_rej.t3442.unit = LIBLTE_MME_GPRS_TIMER_DEACTIVATED; service_rej.t3442.unit = LIBLTE_MME_GPRS_TIMER_DEACTIVATED;
@ -1280,18 +1158,6 @@ nas::pack_service_reject(srslte::byte_buffer_t *reply_msg)
m_nas_log->console("Error packing Service Reject\n"); m_nas_log->console("Error packing Service Reject\n");
return false; return false;
} }
//Copy NAS PDU to Downlink NAS Trasport message buffer
memcpy(dw_nas->NAS_PDU.buffer, nas_buffer->msg, nas_buffer->N_bytes);
dw_nas->NAS_PDU.n_octets = nas_buffer->N_bytes;
//Pack Downlink NAS Transport Message
err = liblte_s1ap_pack_s1ap_pdu(&tx_pdu, (LIBLTE_BYTE_MSG_STRUCT *) reply_msg);
if (err != LIBLTE_SUCCESS) {
m_nas_log->error("Error packing Dw NAS Transport: Service Reject\n");
m_nas_log->console("Error packing Downlink NAS Transport: Service Reject\n");
return false;
}
return true; return true;
} }

12
srsepc/src/mme/s1ap_nas_transport.cc
Unescape Escape View File

@ -218,7 +218,7 @@ s1ap_nas_transport::handle_uplink_nas_transport(LIBLTE_S1AP_MESSAGE_UPLINKNASTRA
case LIBLTE_MME_MSG_TYPE_IDENTITY_RESPONSE: case LIBLTE_MME_MSG_TYPE_IDENTITY_RESPONSE:
m_s1ap_log->info("Uplink NAS: Received Identity Response\n"); m_s1ap_log->info("Uplink NAS: Received Identity Response\n");
m_s1ap_log->console("Uplink NAS: Received Identity Response\n"); m_s1ap_log->console("Uplink NAS: Received Identity Response\n");
nas_ctx->handle_identity_response(nas_msg, reply_buffer, reply_flag); nas_ctx->handle_identity_response(nas_msg);
break; break;
case LIBLTE_MME_MSG_TYPE_AUTHENTICATION_RESPONSE: case LIBLTE_MME_MSG_TYPE_AUTHENTICATION_RESPONSE:
m_s1ap_log->info("Uplink NAS: Received Authentication Response\n"); m_s1ap_log->info("Uplink NAS: Received Authentication Response\n");
@ -229,7 +229,7 @@ s1ap_nas_transport::handle_uplink_nas_transport(LIBLTE_S1AP_MESSAGE_UPLINKNASTRA
case LIBLTE_MME_MSG_TYPE_AUTHENTICATION_FAILURE: case LIBLTE_MME_MSG_TYPE_AUTHENTICATION_FAILURE:
m_s1ap_log->info("Plain UL NAS: Authentication Failure\n"); m_s1ap_log->info("Plain UL NAS: Authentication Failure\n");
m_s1ap_log->console("Plain UL NAS: Authentication Failure\n"); m_s1ap_log->console("Plain UL NAS: Authentication Failure\n");
nas_ctx->handle_authentication_failure(nas_msg, reply_buffer, reply_flag); nas_ctx->handle_authentication_failure(nas_msg);
break; break;
// Detach request can be sent not integrity protected when "power off" option is used // Detach request can be sent not integrity protected when "power off" option is used
case LIBLTE_MME_MSG_TYPE_DETACH_REQUEST: case LIBLTE_MME_MSG_TYPE_DETACH_REQUEST:
@ -282,22 +282,22 @@ s1ap_nas_transport::handle_uplink_nas_transport(LIBLTE_S1AP_MESSAGE_UPLINKNASTRA
case LIBLTE_MME_MSG_TYPE_ATTACH_COMPLETE: case LIBLTE_MME_MSG_TYPE_ATTACH_COMPLETE:
m_s1ap_log->info("Integrity Protected UL NAS: Received Attach Complete\n"); m_s1ap_log->info("Integrity Protected UL NAS: Received Attach Complete\n");
m_s1ap_log->console("Integrity Protected UL NAS: Received Attach Complete\n"); m_s1ap_log->console("Integrity Protected UL NAS: Received Attach Complete\n");
nas_ctx->handle_attach_complete(nas_msg, reply_buffer, reply_flag); nas_ctx->handle_attach_complete(nas_msg);
break; break;
case LIBLTE_MME_MSG_TYPE_ESM_INFORMATION_RESPONSE: case LIBLTE_MME_MSG_TYPE_ESM_INFORMATION_RESPONSE:
m_s1ap_log->info("Integrity Protected UL NAS: Received ESM Information Response\n"); m_s1ap_log->info("Integrity Protected UL NAS: Received ESM Information Response\n");
m_s1ap_log->console("Integrity Protected UL NAS: Received ESM Information Response\n"); m_s1ap_log->console("Integrity Protected UL NAS: Received ESM Information Response\n");
nas_ctx->handle_esm_information_response(nas_msg, reply_buffer, reply_flag); nas_ctx->handle_esm_information_response(nas_msg);
break; break;
case LIBLTE_MME_MSG_TYPE_TRACKING_AREA_UPDATE_REQUEST: case LIBLTE_MME_MSG_TYPE_TRACKING_AREA_UPDATE_REQUEST:
m_s1ap_log->info("Integrity Protected UL NAS: Tracking Area Update Request\n"); m_s1ap_log->info("Integrity Protected UL NAS: Tracking Area Update Request\n");
m_s1ap_log->console("Integrity Protected UL NAS: Tracking Area Update Request\n"); m_s1ap_log->console("Integrity Protected UL NAS: Tracking Area Update Request\n");
nas_ctx->handle_tracking_area_update_request(nas_msg, reply_buffer, reply_flag); nas_ctx->handle_tracking_area_update_request(nas_msg);
break; break;
case LIBLTE_MME_MSG_TYPE_AUTHENTICATION_FAILURE: case LIBLTE_MME_MSG_TYPE_AUTHENTICATION_FAILURE:
m_s1ap_log->info("Integrity Protected UL NAS: Authentication Failure\n"); m_s1ap_log->info("Integrity Protected UL NAS: Authentication Failure\n");
m_s1ap_log->console("Integrity Protected UL NAS: Authentication Failure\n"); m_s1ap_log->console("Integrity Protected UL NAS: Authentication Failure\n");
nas_ctx->handle_authentication_failure(nas_msg, reply_buffer, reply_flag); nas_ctx->handle_authentication_failure(nas_msg);
break; break;
case LIBLTE_MME_MSG_TYPE_DETACH_REQUEST: case LIBLTE_MME_MSG_TYPE_DETACH_REQUEST:
m_s1ap_log->info("Integrity Protected UL NAS: Detach Request\n"); m_s1ap_log->info("Integrity Protected UL NAS: Detach Request\n");

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