mirror of https://github.com/PentHertz/srsLTE.git
Starting to create structure for modify bearer response
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@ -74,6 +74,8 @@ typedef union gtpc_msg_choice
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{
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struct gtpc_create_session_request create_session_request;
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struct gtpc_create_session_response create_session_response;
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struct gtpc_modify_bearer_request modify_bearer_request;
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//struct gtpc_modify_bearer_response modify_bearer_response;
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} gtpc_msg_choice_t;
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/****************************************************************************
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@ -53,14 +53,14 @@ typedef struct {
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} spgw_args_t;
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typedef struct {
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typedef struct spgw_tunnel_ctx {
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uint64_t imsi;
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in_addr_t ue_ipv4;
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struct srslte::gtpc_f_teid_ie up_ctrl_fteid;
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struct srslte::gtpc_f_teid_ie up_user_fteid;
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struct srslte::gtpc_f_teid_ie dw_ctrl_fteid;
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struct srslte::gtpc_f_teid_ie dw_user_fteid;
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} spgw_ue_ctx;
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} spgw_tunnel_ctx_t;
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class spgw:
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public thread
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@ -73,6 +73,7 @@ public:
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void run_thread();
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void handle_create_session_request(struct srslte::gtpc_create_session_request *cs_req, struct srslte::gtpc_pdu *cs_resp_pdu);
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void handle_modify_bearer_request(struct srslte::gtpc_pdu *mb_req_pdu, struct srslte::gtpc_pdu *mb_resp_pdu);
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private:
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@ -101,8 +102,8 @@ private:
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uint64_t m_next_ctrl_teid;
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uint64_t m_next_user_teid;
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std::map<uint32_t,spgw_ue_ctx*> m_teid_to_ue_ctx; //Map control TEID to ue_ctx. Usefull to get reply ctrl TEID
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std::map<in_addr_t,gtpc_f_teid_ie> m_ip_to_teid; //Map IP to User-plane TEID for downlink traffic
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std::map<uint32_t,spgw_tunnel_ctx*> m_teid_to_tunnel_ctx; //Map control TEID to tunnel ctx. Usefull to get reply ctrl TEID, UE IP, etc.
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std::map<in_addr_t,srslte::gtpc_f_teid_ie> m_ip_to_teid; //Map IP to User-plane TEID for downlink traffic
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/*Logs*/
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srslte::log_filter *m_spgw_log;
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@ -176,7 +176,7 @@ mme_gtpc::send_modify_bearer_request(erab_ctx_t *erab_ctx)
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header->teid = sgw_ctrl_fteid->teid;
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header->type = srslte::GTPC_MSG_TYPE_MODIFY_BEARER_REQUEST;
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srslte::gtpc_modify_bearer_request *mb_req = &mb_req_pdu.modify_bearer_request;
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srslte::gtpc_modify_bearer_request *mb_req = &mb_req_pdu.choice.modify_bearer_request;
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mb_req->eps_bearer_context_to_modify.ebi = erab_ctx->erab_id;
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mb_req->eps_bearer_context_to_modify.s1_u_enb_f_teid.ipv4 = enb_fteid->ipv4;
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mb_req->eps_bearer_context_to_modify.s1_u_enb_f_teid.teid = enb_fteid->teid;
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@ -323,11 +323,11 @@ spgw::handle_create_session_request(struct srslte::gtpc_create_session_request *
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in_addr_t ue_ip = get_new_ue_ipv4();
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//Save the UE IP to User TEID map //TODO!!!
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struct sgw_ue_ctx *ue_ctx = new sgw_ue_ctx;
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sgw_ue_ctx->imsi = cs_req->imsi;
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sgw_ue_ctx->ul_user_fteid.teid = spgw_uplink_user_teid;
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sgw_ue_ctx->ul_ctrl_fteid = spgw_uplink_ctrl_teid;
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sgw_ue_ctx->ue_ipv4 = ue_ip;
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spgw_tunnel_ctx_t *tunnel_ctx = new spgw_tunnel_ctx_t;
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tunnel_ctx->imsi = cs_req->imsi;
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tunnel_ctx->up_user_fteid.teid = spgw_uplink_user_teid;
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tunnel_ctx->up_ctrl_fteid.teid = spgw_uplink_ctrl_teid;
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tunnel_ctx->ue_ipv4 = ue_ip;
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//Create session response message
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//Setup GTP-C header
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@ -363,13 +363,28 @@ spgw::handle_modify_bearer_request(struct srslte::gtpc_pdu *mb_req_pdu, struct s
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{
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m_spgw_log->info("Received Modified Bearer Request\n");
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//Get control tunnel info from
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//Setting up Modify bearer request PDU
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//Get control tunnel info from mb_req PDU
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uint32_t ctrl_teid = mb_req_pdu->header.teid;
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std::map<uint32_t,spgw_tunnel_ctx_t*>::iterator tunnel_it = m_teid_to_tunnel_ctx.find(ctrl_teid);
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if(tunnel_it == m_teid_to_tunnel_ctx.end())
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{
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m_spgw_log->warning("Could not find TEID %d to modify",ctrl_teid);
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return;
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}
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spgw_tunnel_ctx_t *tunnel_ctx = tunnel_it->second;
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//Store user DW link TEID
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srslte::gtpc_modify_bearer_request *mb_req = &mb_req_pdu->choice.modify_bearer_request;
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tunnel_ctx->dw_user_fteid = mb_req->eps_bearer_context_to_modify.s1_u_enb_f_teid;
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//Set up actual tunnel
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//TODO!!!
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//Setting up Modify bearer response PDU
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//Header
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srslte::gtpc_header *header = &mb_req_pdu->header;
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header->piggyback = false;
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header->teid_present = true;
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header->teid = ; //
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header->teid = tunnel_ctx->dw_ctrl_fteid.teid; //
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header->type = srslte::GTPC_MSG_TYPE_MODIFY_BEARER_RESPONSE;
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//PDU
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