if5_mobipass tools

openair1/PHY/LTE_TRANSPORT/if5_mobipass_tools.c

+
+#include <stdint.h>
+
+#include "PHY/defs.h"
+#include "PHY/LTE_TRANSPORT/if5_mobipass_tools.h"
+
+#include "targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h"
+
+
+uint8_t send_IF5(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc, uint8_t init_seq) {      
+  
+  uint8_t seqno=init_seq;
+  void *txp[2]; 
+  void *tx_buffer=NULL;
+  __m128i *data_block=NULL,*main_data_block=NULL;
+
+  __m128i *txp128;
+  __m128i t0, t1;
+
+  uint16_t packet_id=0, i;
+  uint16_t db_fulllength = 640;
+
+  tx_buffer = memalign(16, MAC_HEADER_SIZE_BYTES + sizeof_IF5_mobipass_header_t + db_fulllength*sizeof(int16_t));
+  IF5_mobipass_header_t *header = (IF5_mobipass_header_t *)(tx_buffer + MAC_HEADER_SIZE_BYTES);
+  data_block = (__m128i *)(tx_buffer + MAC_HEADER_SIZE_BYTES + sizeof_IF5_mobipass_header_t + 4);
+  main_data_block = data_block;
+  
+  header->flags = 0;
+  header->fifo_status = 0;  
+  header->ack = 0;
+  header->seqno = seqno;
+  header->rsvd = 0;  
+
+  txp[0] = (void*)&eNB->common_vars.txdata[0][0][proc->subframe_tx*eNB->frame_parms.samples_per_tti];
+  txp128 = (__m128i *) txp[0];
+    		    
+  for (packet_id=0; packet_id<(7680*2)/640; packet_id++) {
+    header->time_stamp = proc->timestamp_tx + packet_id*640; 
+    data_block = main_data_block; 
+
+    for (i=0; i<db_fulllength>>3; i+=2) {
+      t0 = _mm_srli_epi16(*txp128++, 4);
+      t1 = _mm_srli_epi16(*txp128++, 4);   
+      
+      *data_block++ = _mm_packs_epi16(t0, t1);     
+    }
+    
+    // Write the packet to the fronthaul
+    if ((eNB->ifdevice.trx_write_func(&eNB->ifdevice,
+                                      packet_id,
+                                      &tx_buffer,
+                                      db_fulllength,
+                                      1,
+                                      IF5_MOBIPASS)) < 0) {
+      perror("ETHERNET write for IF5_MOBIPASS\n");
+    }
+
+    header->seqno += 1;    
+  }
+  
+  seqno = header->seqno;
+  free(tx_buffer);
+  return(seqno);  		    
+}
+

openair1/PHY/LTE_TRANSPORT/if5_mobipass_tools.h

+
+#include <stdint.h>
+#include "PHY/defs.h"
+
+#define IF5_MOBIPASS 0x0050
+
+struct IF5_mobipass_header {  
+  /// Type
+  uint16_t flags; 
+  /// Sub-Type
+  uint16_t fifo_status;
+  /// Reserved
+  uint8_t seqno;
+  
+  uint8_t ack;
+
+  uint32_t rsvd;
+  /// Frame Status
+  uint32_t time_stamp;
+
+} __attribute__ ((__packed__));
+
+typedef struct IF5_mobipass_header IF5_mobipass_header_t;
+#define sizeof_IF5_mobipass_header_t 14
+
+uint8_t send_IF5(PHY_VARS_eNB*, eNB_rxtx_proc_t*, uint8_t);