5g-team
/
srsRAN_4G
mirror of https://github.com/pvnis/srsRAN_4G.git
2
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

changing handle of guti attach request.

Browse Source
master
Pedro Alvarez 7 years ago
parent 7306d00ea5
commit 7c21b4cc11
1 changed files with 30 additions and 21 deletions
Show Stats Download Patch File Download Diff File

49
srsepc/src/mme/s1ap_nas_transport.cc
Unescape Escape View File

@ -346,38 +346,44 @@ s1ap_nas_transport::handle_nas_guti_attach_request(uint32_t enb_ue_s1ap_id,
if(it == m_s1ap->m_tmsi_to_s1ap_id.end())
{
//Could not find IMSI from M-TMSI, send Id request
ue_ctx_t ue_ctx;
ue_ctx.imsi = 0;
ue_ctx.enb_ue_s1ap_id = enb_ue_s1ap_id;
ue_ctx.mme_ue_s1ap_id = m_s1ap->get_next_mme_ue_s1ap_id();
ue_emm_ctx_t tmp_ue_emm_ctx;
ue_ecm_ctx_t ue_ecm_ctx;
//Set tmp UE EMM context
tmp_ue_emm_ctx.imsi = 0;
//Save UE network capabilities
memcpy(&ue_ctx.security_ctxt.ue_network_cap, &attach_req.ue_network_cap, sizeof(LIBLTE_MME_UE_NETWORK_CAPABILITY_STRUCT));
ue_ctx.security_ctxt.ms_network_cap_present = attach_req.ms_network_cap_present;
memcpy(&tmp_ue_emm_ctx.security_ctxt.ue_network_cap, &attach_req.ue_network_cap, sizeof(LIBLTE_MME_UE_NETWORK_CAPABILITY_STRUCT));
tmp_ue_emm_ctx.security_ctxt.ms_network_cap_present = attach_req.ms_network_cap_present;
if(attach_req.ms_network_cap_present)
{
memcpy(&ue_ctx.security_ctxt.ms_network_cap, &attach_req.ms_network_cap, sizeof(LIBLTE_MME_MS_NETWORK_CAPABILITY_STRUCT));
memcpy(&tmp_ue_emm_ctx.security_ctxt.ms_network_cap, &attach_req.ms_network_cap, sizeof(LIBLTE_MME_MS_NETWORK_CAPABILITY_STRUCT));
}
//Initialize NAS count
tmp_ue_emm_ctx.security_ctxt.ul_nas_count = 0;
tmp_ue_emm_ctx.security_ctxt.dl_nas_count = 0;
tmp_ue_emm_ctx.procedure_transaction_id = pdn_con_req.proc_transaction_id;
//Set ECM context
ue_ecm_ctx.enb_ue_s1ap_id = enb_ue_s1ap_id;
ue_ecm_ctx.mme_ue_s1ap_id = m_s1ap->get_next_mme_ue_s1ap_id();
uint8_t eps_bearer_id = pdn_con_req.eps_bearer_id; //TODO: Unused
ue_ctx.procedure_transaction_id = pdn_con_req.proc_transaction_id;
//Save whether ESM information transfer is necessary
ue_ctx.eit = pdn_con_req.esm_info_transfer_flag_present;
ue_ecm_ctx.eit = pdn_con_req.esm_info_transfer_flag_present;
//m_s1ap_log->console("EPS Bearer id: %d\n", eps_bearer_id);
//Initialize NAS count
ue_ctx.security_ctxt.ul_nas_count = 0;
ue_ctx.security_ctxt.dl_nas_count = 0;
//Add eNB info to UE ctxt
memcpy(&ue_ctx.enb_sri, enb_sri, sizeof(struct sctp_sndrcvinfo));
memcpy(&ue_ecm_ctx.enb_sri, enb_sri, sizeof(struct sctp_sndrcvinfo));
//Initialize E-RABs
for(uint i = 0 ; i< MAX_ERABS_PER_UE; i++)
{
ue_ctx.erabs_ctx[i].state = ERAB_DEACTIVATED;
ue_ctx.erabs_ctx[i].erab_id = i;
ue_ecm_ctx.erabs_ctx[i].state = ERAB_DEACTIVATED;
ue_ecm_ctx.erabs_ctx[i].erab_id = i;
}
m_s1ap_log->console("Attach request -- IMSI: %015lu\n", ue_ctx.imsi);
m_s1ap_log->info("Attach request -- IMSI: %015lu\n", ue_ctx.imsi);
m_s1ap_log->console("Attach request -- eNB-UE S1AP Id: %d, MME-UE S1AP Id: %d\n", ue_ctx.enb_ue_s1ap_id, ue_ctx.mme_ue_s1ap_id);
m_s1ap_log->console("Attach request -- IMSI: %015lu\n", ue_ecm_ctx.imsi);
m_s1ap_log->info("Attach request -- IMSI: %015lu\n", ue_ecm_ctx.imsi);
m_s1ap_log->console("Attach request -- eNB-UE S1AP Id: %d, MME-UE S1AP Id: %d\n", ue_ecm_ctx.enb_ue_s1ap_id, ue_ecm_ctx.mme_ue_s1ap_id);
m_s1ap_log->console("Attach Request -- UE Network Capabilities EEA: %d%d%d%d%d%d%d%d\n",
attach_req.ue_network_cap.eea[0],
attach_req.ue_network_cap.eea[1],
@ -403,13 +409,15 @@ s1ap_nas_transport::handle_nas_guti_attach_request(uint32_t enb_ue_s1ap_id,
m_s1ap_log->console("Could not find M-TMSI=0x%x. Sending ID request\n",m_tmsi);
m_s1ap_log->info("Could not find M-TMSI=0x%d. Sending Id Request\n", m_tmsi);
m_s1ap->add_new_ue_ctx(ue_ctx);
pack_identity_request(reply_buffer, ue_ctx.enb_ue_s1ap_id, ue_ctx.mme_ue_s1ap_id);
m_s1ap->add_new_ue_ecm_ctx(ue_ecm_ctx);
pack_identity_request(reply_buffer, ue_ecm_ctx.enb_ue_s1ap_id, ue_ecm_ctx.mme_ue_s1ap_id);
*reply_flag = true;
return true;
}
else{
m_s1ap_log->console("Attach Request -- Found M-TMSI: %d\n",m_tmsi);
/*
ue_ctx_t *ue_ctx_ptr = m_s1ap->find_ue_ctx(it->second);
if(ue_ctx_ptr!=NULL)
{
@ -423,6 +431,7 @@ s1ap_nas_transport::handle_nas_guti_attach_request(uint32_t enb_ue_s1ap_id,
m_s1ap_log->error("Found M-TMSI but could not find UE context\n");
return false;
}
*/
}
return true;
}

Write Preview
Loading…
Cancel
Save