Moved PCAP interface to a separate class. Called PCAP from DL/UL HARQ processes

srsapps/ue/mac/include/srsapps/ue/mac/mac_pcap.h

@@ -0,0 +1,67 @@
+/**
+ *
+ * \section COPYRIGHT
+ *
+ * Copyright 2013-2015 The srsLTE Developers. See the
+ * COPYRIGHT file at the top-level directory of this distribution.
+ *
+ * \section LICENSE
+ *
+ * This file is part of the srsLTE library.
+ *
+ * srsLTE is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * srsLTE is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * A copy of the GNU Affero General Public License can be found in
+ * the LICENSE file in the top-level directory of this distribution
+ * and at http://www.gnu.org/licenses/.
+ *
+ */
+
+
+#include <stdint.h>
+#include "srsapps/ue/mac/pcap.h"
+
+#ifndef MACPCAP_H
+#define MACPCAP_H
+
+namespace srslte {
+namespace ue {
+
+class mac_pcap
+{
+public: 
+  mac_pcap() {enable_write=false; ue_id=0;}; 
+  void enable(bool en);
+  bool open(const char *filename, uint32_t ue_id = 0);
+  void close(); 
+  void write_ul_crnti(uint8_t *pdu, uint32_t pdu_len_bytes, uint16_t crnti, uint32_t reTX, uint32_t tti);
+  void write_dl_crnti(uint8_t *pdu, uint32_t pdu_len_bytes, uint16_t crnti, bool crc_ok, uint32_t tti);
+  void write_dl_ranti(uint8_t *pdu, uint32_t pdu_len_bytes, uint16_t ranti, bool crc_ok, uint32_t tti);
+  
+  // SI and BCH only for DL 
+  void write_dl_sirnti(uint8_t *pdu, uint32_t pdu_len_bytes, bool crc_ok, uint32_t tti);
+  void write_dl_bch(uint8_t *pdu, uint32_t pdu_len_bytes, bool crc_ok, uint32_t tti);
+  
+private:
+  bool enable_write; 
+  FILE *pcap_file; 
+  uint32_t ue_id; 
+  void pack_and_write(uint8_t* pdu, uint32_t pdu_len_bytes, uint32_t reTX, bool crc_ok, uint32_t tti, 
+                              uint16_t crnti_, uint8_t direction, uint8_t rnti_type);
+  
+  static const uint32_t max_pdu_len = 16*1024;
+  uint8_t pdu_pcap_tmp[max_pdu_len]; 
+};
+
+}
+}
+
+#endif

srsapps/ue/mac/src/mac_pcap.cc

@@ -0,0 +1,102 @@
+/**
+ *
+ * \section COPYRIGHT
+ *
+ * Copyright 2013-2015 The srsLTE Developers. See the
+ * COPYRIGHT file at the top-level directory of this distribution.
+ *
+ * \section LICENSE
+ *
+ * This file is part of the srsLTE library.
+ *
+ * srsLTE is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * srsLTE is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * A copy of the GNU Affero General Public License can be found in
+ * the LICENSE file in the top-level directory of this distribution
+ * and at http://www.gnu.org/licenses/.
+ *
+ */
+
+
+#include <stdint.h>
+#include "srslte/srslte.h"
+#include "srsapps/ue/mac/pcap.h"
+#include "srsapps/ue/mac/mac_pcap.h"
+
+
+namespace srslte {
+namespace ue {
+ 
+void mac_pcap::enable(bool en)
+{
+  enable_write = true; 
+}
+bool mac_pcap::open(const char* filename, uint32_t ue_id)
+{
+  pcap_file = MAC_LTE_PCAP_Open(filename);
+  ue_id = ue_id; 
+  enable_write = true; 
+}
+void mac_pcap::close()
+{
+  fprintf(stdout, "Saving PCAP file\n");
+  MAC_LTE_PCAP_Close(pcap_file);
+}
+
+void mac_pcap::pack_and_write(uint8_t* pdu, uint32_t pdu_len_bytes, uint32_t reTX, bool crc_ok, uint32_t tti, 
+                              uint16_t crnti, uint8_t direction, uint8_t rnti_type)
+{
+  if (enable_write) {
+    if (pdu_len_bytes < max_pdu_len) {
+      MAC_Context_Info_t  context =
+      {
+          FDD_RADIO, direction, rnti_type,
+          crnti,       /* RNTI */
+          ue_id,      /* UEId */
+          reTX,        /* Retx */
+          crc_ok,        /* CRC Stsatus (i.e. OK) */
+          tti/10,        /* Sysframe number */
+          tti%10        /* Subframe number */
+      };
+      if (pdu) {
+        srslte_bit_unpack_vector(pdu, pdu_pcap_tmp, pdu_len_bytes*8);
+        MAC_LTE_PCAP_WritePDU(pcap_file, &context, pdu_pcap_tmp, pdu_len_bytes);
+      }
+    } else {
+      fprintf(stderr, "MAC PCAP: PDU len %d exceeds maximum allowed length (%d bytes)\n", pdu_len_bytes, max_pdu_len); 
+    }
+  }
+}
+
+void mac_pcap::write_dl_crnti(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, bool crc_ok, uint32_t tti)
+{
+  pack_and_write(pdu, pdu_len_bytes, 0, crc_ok, tti, rnti, DIRECTION_DOWNLINK, C_RNTI);
+}
+void mac_pcap::write_dl_ranti(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, bool crc_ok, uint32_t tti)
+{
+  pack_and_write(pdu, pdu_len_bytes, 0, crc_ok, tti, rnti, DIRECTION_DOWNLINK, RA_RNTI);
+}
+void mac_pcap::write_ul_crnti(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, uint32_t reTX, uint32_t tti)
+{
+  pack_and_write(pdu, pdu_len_bytes, reTX, true, tti, rnti, DIRECTION_UPLINK, C_RNTI);
+}
+void mac_pcap::write_dl_bch(uint8_t* pdu, uint32_t pdu_len_bytes, bool crc_ok, uint32_t tti)
+{
+  pack_and_write(pdu, pdu_len_bytes, 0, crc_ok, tti, 0, DIRECTION_DOWNLINK, NO_RNTI);
+}
+void mac_pcap::write_dl_sirnti(uint8_t* pdu, uint32_t pdu_len_bytes, bool crc_ok, uint32_t tti)
+{
+  pack_and_write(pdu, pdu_len_bytes, 0, crc_ok, tti, SRSLTE_SIRNTI, DIRECTION_DOWNLINK, SI_RNTI);
+}
+
+  
+}
+}