netdev - [PATCH iproute2] tc_util: support TCA_STATS

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Date:   Tue,  3 Dec 2019 07:47:01 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     David Ahern <dsahern@...il.com>,
        Stephen Hemminger <stephen@...workplumber.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH iproute2] tc_util: support TCA_STATS_PKT64 attribute

Kernel exports 64bit packet counters for qdisc/class stats in linux-5.5

Tested:

$ tc -s -d qd sh dev eth1 | grep pkt
 Sent 4041158922097 bytes 46393862190 pkt (dropped 0, overlimits 0 requeues 2072)
 Sent 501362903764 bytes 5762621697 pkt (dropped 0, overlimits 0 requeues 247)
 Sent 533282357858 bytes 6128246542 pkt (dropped 0, overlimits 0 requeues 329)
 Sent 515878280709 bytes 5875638916 pkt (dropped 0, overlimits 0 requeues 267)
 Sent 516221011694 bytes 5933395197 pkt (dropped 0, overlimits 0 requeues 258)
 Sent 513175109761 bytes 5898402114 pkt (dropped 0, overlimits 0 requeues 231)
 Sent 480207942964 bytes 5519535407 pkt (dropped 0, overlimits 0 requeues 229)
 Sent 483111196765 bytes 5552917950 pkt (dropped 0, overlimits 0 requeues 240)
 Sent 497920120322 bytes 5723104387 pkt (dropped 0, overlimits 0 requeues 271)
$ tc -s -d cl sh dev eth1 | grep pkt
 Sent 513196316238 bytes 5898645862 pkt (dropped 0, overlimits 0 requeues 231)
 Sent 533304444981 bytes 6128500406 pkt (dropped 0, overlimits 0 requeues 329)
 Sent 480227709687 bytes 5519762597 pkt (dropped 0, overlimits 0 requeues 229)
 Sent 501383660279 bytes 5762860276 pkt (dropped 0, overlimits 0 requeues 247)
 Sent 483131168192 bytes 5553147506 pkt (dropped 0, overlimits 0 requeues 240)
 Sent 515899485505 bytes 5875882649 pkt (dropped 0, overlimits 0 requeues 267)
 Sent 497940747031 bytes 5723341475 pkt (dropped 0, overlimits 0 requeues 271)
 Sent 516242376893 bytes 5933640774 pkt (dropped 0, overlimits 0 requeues 258)

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 tc/tc_util.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tc/tc_util.c b/tc/tc_util.c
index afdfc78f2e5b11af178bdf1db540d917b1f457f3..23115f9b950a8786453fad25be4244ff7c3bdd76 100644
--- a/tc/tc_util.c
+++ b/tc/tc_util.c
@@ -809,11 +809,18 @@ void print_tcstats2_attr(FILE *fp, struct rtattr *rta, char *prefix, struct rtat
 
 	if (tbs[TCA_STATS_BASIC]) {
 		struct gnet_stats_basic bs = {0};
+		__u64 packets64 = 0;
+
+		if (tbs[TCA_STATS_PKT64])
+			packets64 = rta_getattr_u64(tbs[TCA_STATS_PKT64]);
 
 		memcpy(&bs, RTA_DATA(tbs[TCA_STATS_BASIC]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_BASIC]), sizeof(bs)));
 		print_string(PRINT_FP, NULL, "%s", prefix);
 		print_lluint(PRINT_ANY, "bytes", "Sent %llu bytes", bs.bytes);
-		print_uint(PRINT_ANY, "packets", " %u pkt", bs.packets);
+		if (packets64)
+			print_lluint(PRINT_ANY, "packets", " %llu pkt", packets64);
+		else
+			print_uint(PRINT_ANY, "packets", " %u pkt", bs.packets);
 	}
 
 	if (tbs[TCA_STATS_QUEUE]) {
-- 
2.24.0.393.g34dc348eaf-goog