mirror of https://github.com/PentHertz/srsLTE.git
Fixed GUTI attach procedure when authentication is successful. Ping works again.
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51e7b3fec6
commit
62dc65556a
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@ -179,7 +179,7 @@ s1ap_ctx_mngmt_proc::send_initial_context_setup_request(ue_emm_ctx_t *emm_ctx,
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}
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//Send Reply to eNB
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ssize_t n_sent = sctp_send(s1mme,reply_buffer->msg, reply_buffer->N_bytes, &ecm_ctx->enb_sri, 0);
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ssize_t n_sent = sctp_send(s1mme,reply_buffer->msg, reply_buffer->N_bytes, &ecm_ctx->enb_sri, 0);
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if(n_sent == -1)
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{
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m_s1ap_log->error("Failed to send Initial Context Setup Request\n");
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@ -195,8 +195,10 @@ s1ap_ctx_mngmt_proc::send_initial_context_setup_request(ue_emm_ctx_t *emm_ctx,
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addr.s_addr = htonl(sgw_s1u_ip);
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m_s1ap_log->info("Sent Intial Context Setup Request. E-RAB id %d \n",erab_ctx_req->e_RAB_ID.E_RAB_ID);
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m_s1ap_log->info("Initial Context -- S1-U TEID 0x%x. IP %s \n", sgw_s1u_teid,inet_ntoa(addr));
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m_s1ap_log->console("Sent Intial Context Setup Request, E-RAB id %d\n",erab_ctx_req->e_RAB_ID.E_RAB_ID);
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m_s1ap_log->console("Initial Context -- S1-U TEID 0x%x. IP %s \n", sgw_s1u_teid,inet_ntoa(addr));
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m_s1ap_log->console("Initial Context Setup Request -- eNB UE S1AP Id %d, MME UE S1AP Id %d\n",in_ctxt_req->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID, in_ctxt_req->MME_UE_S1AP_ID.MME_UE_S1AP_ID);
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m_s1ap_log->console("Initial Context Setup Request -- E-RAB id %d\n",erab_ctx_req->e_RAB_ID.E_RAB_ID);
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m_s1ap_log->console("Initial Context Setup Request -- S1-U TEID 0x%x. IP %s \n", sgw_s1u_teid,inet_ntoa(addr));
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m_s1ap_log->console("Initial Context Setup Request -- S1-U TEID 0x%x. IP %s \n", sgw_s1u_teid,inet_ntoa(addr));
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m_pool->deallocate(reply_buffer);
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m_pool->deallocate(nas_buffer);
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@ -274,8 +274,10 @@ s1ap_nas_transport::handle_uplink_nas_transport(LIBLTE_S1AP_MESSAGE_UPLINKNASTRA
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if(*reply_flag == true)
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{
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m_s1ap_log->console("DL NAS: Sent Downlink NAs Message. DL NAS Count=%d, UL NAS count=%d\n",emm_ctx->security_ctxt.dl_nas_count,emm_ctx->security_ctxt.ul_nas_count );
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m_s1ap_log->console("DL NAS: Sent Downlink NAS Message. DL NAS Count=%d, UL NAS count=%d\n",emm_ctx->security_ctxt.dl_nas_count,emm_ctx->security_ctxt.ul_nas_count );
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m_s1ap_log->info("DL NAS: Sent Downlink NAS message. DL NAS Count=%d, UL NAS count=%d\n",emm_ctx->security_ctxt.dl_nas_count, emm_ctx->security_ctxt.ul_nas_count);
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m_s1ap_log->info("DL NAS: MME UE S1AP id %d\n",ecm_ctx->mme_ue_s1ap_id);
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m_s1ap_log->console("DL NAS: MME UE S1AP id %d\n",ecm_ctx->mme_ue_s1ap_id);
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}
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m_pool->deallocate(nas_msg);
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return true;
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@ -473,8 +475,8 @@ s1ap_nas_transport::handle_nas_guti_attach_request( uint32_t enb_ue_s1ap_id,
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if(it == m_s1ap->m_tmsi_to_imsi.end())
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{
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m_s1ap_log->console("Attach Request -- Could not find M-TMSI 0x%x", m_tmsi);
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m_s1ap_log->info("Attach Request -- Could not find M-TMSI 0x%x", m_tmsi);
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m_s1ap_log->console("Attach Request -- Could not find M-TMSI 0x%x\n", m_tmsi);
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m_s1ap_log->info("Attach Request -- Could not find M-TMSI 0x%x\n", m_tmsi);
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//Could not find IMSI from M-TMSI, send Id request
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ue_ctx_t ue_ctx;
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@ -558,8 +560,7 @@ s1ap_nas_transport::handle_nas_guti_attach_request( uint32_t enb_ue_s1ap_id,
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{
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ue_emm_ctx_t *emm_ctx = &ue_ctx->emm_ctx;
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ue_ecm_ctx_t *ecm_ctx = &ue_ctx->ecm_ctx;
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m_s1ap_log->console("Found UE context. IMSI: %015lu\n",emm_ctx->imsi);
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m_s1ap_log->console("Found UE context. IMSI: %015lu, old MME UE S1AP Id %d\n",emm_ctx->imsi, ecm_ctx->mme_ue_s1ap_id);
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//Check NAS integrity
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bool msg_valid = false;
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emm_ctx->security_ctxt.ul_nas_count++;
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@ -567,8 +568,15 @@ s1ap_nas_transport::handle_nas_guti_attach_request( uint32_t enb_ue_s1ap_id,
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if(msg_valid == true)
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{
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//Create new MME UE S1AP Identity
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emm_ctx->mme_ue_s1ap_id = m_s1ap->get_next_mme_ue_s1ap_id();
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uint32_t new_mme_ue_s1ap_id = m_s1ap->get_next_mme_ue_s1ap_id();
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//Make sure context from previous MME
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if(ecm_ctx->mme_ue_s1ap_id!=0)
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{
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m_s1ap->release_ue_ecm_ctx(ecm_ctx->mme_ue_s1ap_id);
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}
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emm_ctx->mme_ue_s1ap_id = m_s1ap->get_next_mme_ue_s1ap_id();
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ecm_ctx->mme_ue_s1ap_id = emm_ctx->mme_ue_s1ap_id;
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//Set EMM as de-registered
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emm_ctx->state = EMM_STATE_DEREGISTERED;
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//Save Attach type
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@ -591,7 +599,8 @@ s1ap_nas_transport::handle_nas_guti_attach_request( uint32_t enb_ue_s1ap_id,
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ecm_ctx->erabs_ctx[i].erab_id = i;
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}
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//m_s1ap->add_new_ue_ecm_ctx(ue_ecm_ctx);
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//Store context based on MME UE S1AP id
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m_s1ap->add_ue_ctx_to_mme_ue_s1ap_id_map(ue_ctx);
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//Create session request
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m_s1ap_log->console("GUTI Attach -- NAS Integrity OK.");
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m_mme_gtpc->send_create_session_request(emm_ctx->imsi);
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@ -1158,8 +1167,8 @@ s1ap_nas_transport::integrity_check(ue_emm_ctx_t *emm_ctx, srslte::byte_buffer_t
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// Check if expected mac equals the sent mac
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for(i=0; i<4; i++){
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if(exp_mac[i] != mac[i]){
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m_s1ap_log->warning("Integrity check failure. Local: count=%d, [%02x %02x %02x %02x], "
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"Received: count=%d, [%02x %02x %02x %02x]\n",
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m_s1ap_log->warning("Integrity check failure. UL Local: count=%d, [%02x %02x %02x %02x], "
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"Received: UL count=%d, [%02x %02x %02x %02x]\n",
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emm_ctx->security_ctxt.ul_nas_count, exp_mac[0], exp_mac[1], exp_mac[2], exp_mac[3],
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pdu->msg[5], mac[0], mac[1], mac[2], mac[3]);
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return false;
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