netdev - [Patch iproute2] tc: add hit counter for matchall

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Date:   Thu, 17 Jan 2019 13:18:55 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     netdev@...r.kernel.org
Cc:     Cong Wang <xiyou.wangcong@...il.com>,
        Martin Olsson <martin.olsson+netdev@...torsecurity.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Pirko <jiri@...nulli.us>, David Ahern <dsahern@...il.com>
Subject: [Patch iproute2] tc: add hit counter for matchall

Cc: Martin Olsson <martin.olsson+netdev@...torsecurity.com>
Cc: Jamal Hadi Salim <jhs@...atatu.com>
Cc: Jiri Pirko <jiri@...nulli.us>
Cc: David Ahern <dsahern@...il.com>
Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>
---
 tc/f_matchall.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tc/f_matchall.c b/tc/f_matchall.c
index 5ebd0415..03dd51de 100644
--- a/tc/f_matchall.c
+++ b/tc/f_matchall.c
@@ -114,6 +114,7 @@ static int matchall_print_opt(struct filter_util *qu, FILE *f,
 			   struct rtattr *opt, __u32 handle)
 {
 	struct rtattr *tb[TCA_MATCHALL_MAX+1];
+	struct tc_matchall_pcnt *pf = NULL;
 
 	if (opt == NULL)
 		return 0;
@@ -143,6 +144,19 @@ static int matchall_print_opt(struct filter_util *qu, FILE *f,
 			print_bool(PRINT_ANY, "not_in_hw", "\n  not_in_hw", true);
 	}
 
+	if (tb[TCA_MATCHALL_PCNT]) {
+		if (RTA_PAYLOAD(tb[TCA_MATCHALL_PCNT])  < sizeof(*pf)) {
+			print_string(PRINT_FP, NULL, "Broken perf counters\n", NULL);
+			return -1;
+		}
+		pf = RTA_DATA(tb[TCA_MATCHALL_PCNT]);
+	}
+
+	if (show_stats && NULL != pf)
+		print_u64(PRINT_ANY, "rule_hit", " (rule hit %llu)",
+			(unsigned long long) pf->rhit);
+
+
 	if (tb[TCA_MATCHALL_ACT])
 		tc_print_action(f, tb[TCA_MATCHALL_ACT], 0);
 
-- 
2.20.1