Merge pull request #7447 from bergzand/netopt/tx-retries

netopt: Add option for retrieving number of retransmissions

sys/include/net/netopt.h

@@ -340,6 +340,15 @@ typedef enum {
      */
     NETOPT_IQ_INVERT,
 
+    /**
+     * @brief   Get retry amount from missing ACKs of the last transmission
+     *
+     * This retrieves the number of retries needed for the last transmissions.
+     * Only retransmissions due to missing ACK packets are considered.
+     * Retries due to CCA failures are not counted.
+     */
+    NETOPT_TX_RETRIES_NEEDED,
+
     /* add more options if needed */
 
     /**

sys/net/crosslayer/netopt/netopt.c

@@ -74,6 +74,7 @@ static const char *_netopt_strmap[] = {
     [NETOPT_CHANNEL_HOP_PERIOD]    = "NETOPT_CHANNEL_HOP_PERIOD",
     [NETOPT_FIXED_HEADER]          = "NETOPT_FIXED_HEADER",
     [NETOPT_IQ_INVERT]             = "NETOPT_IQ_INVERT",
+    [NETOPT_TX_RETRIES_NEEDED]     = "NETOPT_TX_RETRIES_NEEDED",
     [NETOPT_NUMOF]                 = "NETOPT_NUMOF",
 };