Change interface to unique_byte_buffer

logging message for msg3 preparing

lib/include/srslte/interfaces/ue_nr_interfaces.h

@@ -61,7 +61,7 @@ public:
 
   /// Indicate reception of UL grant (only TBS is provided). Buffer for resulting MAC PDU is provided by MAC and is
   /// passed as pointer to PHY during tx_reuqest
-  virtual void new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant) = 0;
+  virtual void new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant, srslte::unique_byte_buffer_t phy_tx_pdu) = 0;
 
   /**
    * @brief Indicate the successful transmission of a PRACH.

lib/src/common/basic_vnf.cc

@@ -217,7 +217,8 @@ int srslte_basic_vnf::handle_ul_ind(basic_vnf_api::ul_ind_msg_t* msg)
   ul_grant.tti                                              = msg->tti;
   ul_grant.tbs                                              = msg->pdus.length;
   ul_grant.rnti                                             = msg->rnti;
-  m_ue_stack->new_grant_ul(cc_idx, ul_grant);
+  srslte::unique_byte_buffer_t tx_pdu                       = srslte::make_byte_buffer();
+  m_ue_stack->new_grant_ul(cc_idx, ul_grant, std::move(tx_pdu));
 
   return SRSLTE_SUCCESS;
 }

srsue/hdr/stack/mac_nr/mac_nr.h

@@ -52,7 +52,7 @@ public:
 
   int  sf_indication(const uint32_t tti);
   void tb_decoded(const uint32_t cc_idx, mac_nr_grant_dl_t& grant);
-  void new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant);
+  void new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant, srslte::unique_byte_buffer_t tx_pdu);
   void prach_sent(const uint32_t tti,
                   const uint32_t s_id,
                   const uint32_t t_id,
@@ -95,7 +95,7 @@ public:
 private:
   void write_pcap(const uint32_t cc_idx, mac_nr_grant_dl_t& grant); // If PCAPs are enabled for this MAC
   void handle_pdu(srslte::unique_byte_buffer_t pdu);
-  void get_ul_data(const mac_nr_grant_ul_t& grant, phy_interface_stack_nr::tx_request_t* tx_request);
+  void get_ul_data(const mac_nr_grant_ul_t& grant, srslte::unique_byte_buffer_t tx_pdu);
 
   // temporary helper
   void handle_rar_pdu(mac_nr_grant_dl_t& grant);

srsue/hdr/stack/ue_stack_lte.h

@@ -126,7 +126,7 @@ public:
   int  sf_indication(const uint32_t tti) final { return SRSLTE_SUCCESS; }
   void tb_decoded(const uint32_t cc_idx, mac_nr_grant_dl_t& grant) final { mac_nr.tb_decoded(cc_idx, grant); }
 
-  void new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant) final { mac_nr.new_grant_ul(cc_idx, grant); }
+  void new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant, srslte::unique_byte_buffer_t tx_pdu) final { mac_nr.new_grant_ul(cc_idx, grant, std::move(tx_pdu)); }
 
   void run_tti(const uint32_t tti) final
   {

srsue/hdr/stack/ue_stack_nr.h

@@ -82,7 +82,7 @@ public:
     return SRSLTE_SUCCESS;
   }
   void tb_decoded(const uint32_t cc_idx, mac_nr_grant_dl_t& grant) final { mac->tb_decoded(cc_idx, grant); }
-  void new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant) final { mac->new_grant_ul(cc_idx, grant); }
+  void new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant, srslte::unique_byte_buffer_t phy_tx_pdu) final { mac->new_grant_ul(cc_idx, grant, std::move(phy_tx_pdu)); }
   void prach_sent(uint32_t tti, uint32_t s_id, uint32_t t_id, uint32_t f_id, uint32_t ul_carrier_id)
   {
     mac->prach_sent(tti, s_id, t_id, f_id, ul_carrier_id);

srsue/src/phy/nr/cc_worker.cc

@@ -288,7 +288,7 @@ bool cc_worker::work_ul()
     mac_ul_grant.tti                                     = ul_slot_cfg.idx;
     mac_ul_grant.tbs                                     = pusch_cfg.grant.tb[0].tbs;
     srslte::unique_byte_buffer_t tx_pdu                  = srslte::make_byte_buffer();
-    phy->stack->new_grant_ul(0, mac_ul_grant, tx_pdu.get());
+    phy->stack->new_grant_ul(0, mac_ul_grant, std::move(tx_pdu));
     // Provisional reset and assign Tx softbuffer
     srslte_softbuffer_tx_reset(&softbuffer_tx);
     pusch_cfg.grant.tb[0].softbuffer.tx = &softbuffer_tx;

srsue/src/stack/mac_nr/mac_nr.cc

@@ -198,23 +198,15 @@ void mac_nr::tb_decoded(const uint32_t cc_idx, mac_nr_grant_dl_t& grant)
   stack_task_dispatch_queue.push([this]() { process_pdus(); });
 }
 
-void mac_nr::new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant)
+void mac_nr::new_grant_ul(const uint32_t cc_idx, const mac_nr_grant_ul_t& grant, srslte::unique_byte_buffer_t phy_tx_pdu)
 {
-  phy_interface_stack_nr::tx_request_t tx_request = {};
-
-  get_ul_data(grant, &tx_request);
-
-  // send TX.request
-  phy->tx_request(tx_request);
+  get_ul_data(grant, std::move(phy_tx_pdu));
 
   metrics[cc_idx].tx_pkts++;
 }
 
-void mac_nr::get_ul_data(const mac_nr_grant_ul_t& grant, phy_interface_stack_nr::tx_request_t* tx_request)
+void mac_nr::get_ul_data(const mac_nr_grant_ul_t& grant, srslte::unique_byte_buffer_t phy_tx_pdu)
 {
-  // Todo: delegate to mux class
-  tx_request->tb_len = grant.tbs;
-
   // initialize MAC PDU
   tx_buffer->clear();
   tx_pdu.init_tx(tx_buffer.get(), grant.tbs, true);
@@ -256,11 +248,11 @@ void mac_nr::get_ul_data(const mac_nr_grant_ul_t& grant, phy_interface_stack_nr:
 
   logger.info(tx_buffer->msg, tx_buffer->N_bytes, "Generated MAC PDU (%d B)", tx_buffer->N_bytes);
 
-  tx_request->data   = tx_buffer->msg;
-  tx_request->tb_len = tx_buffer->N_bytes;
+  memcpy(phy_tx_pdu.get()->msg, tx_buffer->msg, tx_buffer->N_bytes);
+  phy_tx_pdu.get()->N_bytes = tx_buffer->N_bytes;
 
   if (pcap) {
-    pcap->write_ul_crnti_nr(tx_request->data, tx_request->tb_len, grant.rnti, grant.pid, grant.tti);
+    pcap->write_ul_crnti_nr(tx_buffer->msg, tx_buffer->N_bytes, grant.rnti, grant.pid, grant.tti);
   }
 }
 

srsue/src/stack/mac_nr/proc_ra_nr.cc

@@ -177,6 +177,7 @@ void proc_ra_nr::ra_response_reception(const mac_interface_phy_nr::mac_nr_grant_
 
       for (auto& subpdu : pdu.get_subpdus()) {
         if (subpdu.has_rapid() && subpdu.get_rapid() == preamble_index) {
+          logger.info("PROC RA NR: Setting ul grant and prepare msg3");
           phy->set_ul_grant(subpdu.get_ul_grant());
           // reset all parameters that are used before rar
           rar_rnti = SRSLTE_INVALID_RNTI;