Added support for reporting packet (mis)order.

The "Latency" screen has been updated with 3 columns:
- mis-ordered
  Count the number of mis-ordered packets.
- extent:
  Gives an indication of how mis-ordered the packets are.
  Receiving packet "x - 5" after receiving packet "x" will
  cause an extent of 5.
- duplicate:
  Count number of duplicate packets.

Following commands have been added for the impair mode:
- proba no drop: replaces the former "probability" command.
  Percentage of forwarded packets. So 99.5 means 0.5% of packet drop.
- proba delay
  Percentage of delayed packets for the impair mode.
- proba duplicate
  Percentage of duplicate packets.

Similar parameters are supported within the config files:
- proba no drop
- proba delay
- proba duplicate

Note: it is recommanded to use the signature when measuring packet
misorder, as otherwise unexpected packet would cause miscounts.

Change-Id: I037f606f264d6e2bd7f123df5ed57ab7df8386d7
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/VNFs/DPPD-PROX/handle_lat.h b/VNFs/DPPD-PROX/handle_lat.h
index a80afc90..475682ce 100644
--- a/VNFs/DPPD-PROX/handle_lat.h
+++ b/VNFs/DPPD-PROX/handle_lat.h
@@ -52,6 +52,9 @@ struct lat_test {
 	uint64_t buckets[LAT_BUCKET_COUNT];
 	uint64_t bucket_size;
 	uint64_t lost_packets;
+	uint64_t mis_ordered;
+	uint64_t extent;
+	uint64_t duplicate;
 };
 
 static struct time_unit lat_test_get_accuracy_limit(struct lat_test *lat_test)
@@ -157,6 +160,9 @@ static void lat_test_combine(struct lat_test *dst, struct lat_test *src)
 	if (src->accuracy_limit_tsc > dst->accuracy_limit_tsc)
 		dst->accuracy_limit_tsc = src->accuracy_limit_tsc;
 	dst->lost_packets += src->lost_packets;
+	dst->mis_ordered += src->mis_ordered;
+	dst->extent += src->extent;
+	dst->duplicate += src->duplicate;
 
 #ifdef LATENCY_HISTOGRAM
 	_lat_test_histogram_combine(dst, src);
@@ -178,6 +184,9 @@ static void lat_test_reset(struct lat_test *lat_test)
 	lat_test->accuracy_limit_tsc = 0;
 
 	lat_test->lost_packets = 0;
+	lat_test->mis_ordered = 0;
+	lat_test->extent = 0;
+	lat_test->duplicate = 0;
 
 	memset(lat_test->buckets, 0, sizeof(lat_test->buckets));
 }