net/failsafe: add timestamp to stats snapshot

[dpdk.git] / drivers / net / failsafe / failsafe_ether.c

diff --git a/drivers/net/failsafe/failsafe_ether.c b/drivers/net/failsafe/failsafe_ether.c
index 0282891..21392e5 100644 (file)
--- a/drivers/net/failsafe/failsafe_ether.c
+++ b/drivers/net/failsafe/failsafe_ether.c
@@ -35,6 +35,7 @@
 
 #include <rte_flow.h>
 #include <rte_flow_driver.h>
+#include <rte_cycles.h>
 
 #include "failsafe_private.h"
 
@@ -317,12 +318,18 @@ fs_dev_stats_save(struct sub_device *sdev)
 
        /* Attempt to read current stats. */
        err = rte_eth_stats_get(PORT_ID(sdev), &stats);
-       if (err)
-               WARN("Could not access latest statistics from sub-device %d,"
-                        " using latest snapshot.\n", SUB_ID(sdev));
+       if (err) {
+               uint64_t timestamp = sdev->stats_snapshot.timestamp;
+
+               WARN("Could not access latest statistics from sub-device %d.\n",
+                        SUB_ID(sdev));
+               if (timestamp != 0)
+                       WARN("Using latest snapshot taken before %"PRIu64" seconds.\n",
+                                (rte_rdtsc() - timestamp) / rte_get_tsc_hz());
+       }
        failsafe_stats_increment(&PRIV(sdev->fs_dev)->stats_accumulator,
-                       err ? &sdev->stats_snapshot : &stats);
-       memset(&sdev->stats_snapshot, 0, sizeof(struct rte_eth_stats));
+                       err ? &sdev->stats_snapshot.stats : &stats);
+       memset(&sdev->stats_snapshot, 0, sizeof(sdev->stats_snapshot));
 }
 
 static inline int