Starting to add interface apply_traffic_flow_template between NAS and GW.

lib/include/srslte/interfaces/ue_interfaces.h

@@ -97,7 +97,8 @@ public:
 class gw_interface_nas
 {
 public:
-  virtual int setup_if_addr(uint32_t lcid, uint8_t pdn_type, uint32_t ip_addr, uint8_t *ipv6_if_id, char *err_str) = 0;
+  virtual int setup_if_addr(uint32_t lcid, uint8_t pdn_type, uint32_t ip_addr, uint8_t* ipv6_if_id, char* err_str) = 0;
+  virtual int apply_traffic_flow_template(const LIBLTE_MME_TRAFFIC_FLOW_TEMPLATE_STRUCT* tft)                      = 0;
 };
 
 // GW interface for RRC

srsue/hdr/stack/upper/gw.h

@@ -58,7 +58,8 @@ public:
   void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t pdu);
 
   // NAS interface
-  int setup_if_addr(uint32_t lcid, uint8_t pdn_type, uint32_t ip_addr, uint8_t* ipv6_if_addr, char *err_str);
+  int setup_if_addr(uint32_t lcid, uint8_t pdn_type, uint32_t ip_addr, uint8_t* ipv6_if_addr, char* err_str);
+  int apply_traffic_flow_template(const LIBLTE_MME_TRAFFIC_FLOW_TEMPLATE_STRUCT* tft);
 
   // RRC interface
   void add_mch_port(uint32_t lcid, uint32_t port);

srsue/src/stack/upper/gw.cc

@@ -220,7 +220,11 @@ int gw::setup_if_addr(uint32_t lcid, uint8_t pdn_type, uint32_t ip_addr, uint8_t
 }
 
 
-
+int gw::apply_traffic_flow_template(const LIBLTE_MME_TRAFFIC_FLOW_TEMPLATE_STRUCT* tft)
+{
+  int err;
+  return SRSLTE_SUCCESS;
+}
 /*******************************************************************************
   RRC interface
 *******************************************************************************/

srsue/src/stack/upper/nas.cc

@@ -1133,14 +1133,17 @@ void nas::parse_activate_dedicated_eps_bearer_context_request(uint32_t lcid, uni
 {
   LIBLTE_MME_ACTIVATE_DEDICATED_EPS_BEARER_CONTEXT_REQUEST_MSG_STRUCT request;
   liblte_mme_unpack_activate_dedicated_eps_bearer_context_request_msg((LIBLTE_BYTE_MSG_STRUCT*)pdu.get(), &request);
-
   nas_log->info(
       "Received Activate Dedicated EPS bearer context request (eps_bearer_id=%d, linked_bearer_id=%d, proc_id=%d)\n",
       request.eps_bearer_id,
       request.linked_eps_bearer_id,
       request.proc_transaction_id);
 
-  ctxt.rx_count++;
+  LIBLTE_MME_TRAFFIC_FLOW_TEMPLATE_STRUCT* tft = &request.tft;
+  nas_log->info("Traffic Flow Template: TFT OP code 0x%x, Filter list size %d, Parameter list size %d\n",
+                tft->tft_op_code,
+                tft->packet_filter_list_size,
+                tft->parameter_list_size);
 
   // check the a linked default bearer exists
   if (eps_bearer.find(request.linked_eps_bearer_id) == eps_bearer.end()) {
@@ -1158,6 +1161,9 @@ void nas::parse_activate_dedicated_eps_bearer_context_request(uint32_t lcid, uni
     return;
   }
 
+  // apply packet filters to GW
+  gw->apply_traffic_flow_template(tft);
+
   send_activate_dedicated_eps_bearer_context_accept(request.proc_transaction_id, request.eps_bearer_id);
 }
 

srsue/test/upper/nas_test.cc

@@ -143,6 +143,7 @@ class gw_dummy : public gw_interface_nas, public gw_interface_pdcp
   {
     return SRSLTE_SUCCESS;
   }
+  int     apply_traffic_flow_template(const LIBLTE_MME_TRAFFIC_FLOW_TEMPLATE_STRUCT* tft) { return SRSLTE_SUCCESS; }
   void    write_pdu(uint32_t lcid, unique_byte_buffer_t pdu) {}
   void    write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t sdu) {}
 };