Add csma statistics

cetic · Apr 18, 2014 · 9562c9c · 9562c9c
1 parent c68779c
commit 9562c9c
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Showing 2 changed files with 24 additions and 0 deletions.
diff --git a/core/net/mac/csma.c b/core/net/mac/csma.c
@@ -124,6 +124,21 @@ LIST(neighbor_list);
 static void packet_sent(void *ptr, int status, int num_transmissions);
 static void transmit_packet_list(void *ptr);
 
+int packet_overflow;
+int neighbor_overflow;
+
+/*---------------------------------------------------------------------------*/
+int
+csma_allocated_packets(void)
+{
+  return MAX_QUEUED_PACKETS - memb_count(&packet_memb);
+}
+/*---------------------------------------------------------------------------*/
+int
+csma_allocated_neighbors(void)
+{
+  return CSMA_MAX_NEIGHBOR_QUEUES - memb_count(&neighbor_memb);
+}
 /*---------------------------------------------------------------------------*/
 static struct neighbor_queue *
 neighbor_queue_from_addr(const linkaddr_t *addr)
@@ -404,8 +419,10 @@ send_packet(mac_callback_t sent, void *ptr)
       PRINTF("csma: Neighbor queue full\n");
     }
     PRINTF("csma: could not allocate packet, dropping packet\n");
+    packet_overflow++;
   } else {
     PRINTF("csma: could not allocate neighbor, dropping packet\n");
+    neighbor_overflow++;
   }
   mac_call_sent_callback(sent, ptr, MAC_TX_ERR, 1);
 }
@@ -443,6 +460,7 @@ init(void)
   memb_init(&packet_memb);
   memb_init(&metadata_memb);
   memb_init(&neighbor_memb);
+  packet_overflow = 0;
 }
 /*---------------------------------------------------------------------------*/
 const struct mac_driver csma_driver = {

diff --git a/core/net/mac/csma.h b/core/net/mac/csma.h
@@ -48,4 +48,10 @@ extern const struct mac_driver csma_driver;
 
 const struct mac_driver *csma_init(const struct mac_driver *r);
 
+extern int csma_allocated_packets(void);
+extern int csma_allocated_neighbors(void);
+
+extern int packet_overflow;
+extern int neighbor_overflow;
+
 #endif /* CSMA_H_ */