netdev - [PATCH net-next] sched: act_sample: Implement stats

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Message-Id: <20210310103320.2531933-1-idosch@idosch.org>
Date:   Wed, 10 Mar 2021 12:33:20 +0200
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, jhs@...atatu.com,
        xiyou.wangcong@...il.com, jiri@...dia.com, petrm@...dia.com,
        mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next] sched: act_sample: Implement stats_update callback

From: Ido Schimmel <idosch@...dia.com>

Implement this callback in order to get the offloaded stats added to the
kernel stats.

Signed-off-by: Ido Schimmel <idosch@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
Reviewed-by: Jiri Pirko <jiri@...dia.com>
---
 net/sched/act_sample.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index 3ebf9ede3cf1..db8ee9e5c8c2 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -194,6 +194,16 @@ static int tcf_sample_act(struct sk_buff *skb, const struct tc_action *a,
 	return retval;
 }
 
+static void tcf_sample_stats_update(struct tc_action *a, u64 bytes, u64 packets,
+				    u64 drops, u64 lastuse, bool hw)
+{
+	struct tcf_sample *s = to_sample(a);
+	struct tcf_t *tm = &s->tcf_tm;
+
+	tcf_action_update_stats(a, bytes, packets, drops, hw);
+	tm->lastuse = max_t(u64, tm->lastuse, lastuse);
+}
+
 static int tcf_sample_dump(struct sk_buff *skb, struct tc_action *a,
 			   int bind, int ref)
 {
@@ -280,6 +290,7 @@ static struct tc_action_ops act_sample_ops = {
 	.id	  = TCA_ID_SAMPLE,
 	.owner	  = THIS_MODULE,
 	.act	  = tcf_sample_act,
+	.stats_update = tcf_sample_stats_update,
 	.dump	  = tcf_sample_dump,
 	.init	  = tcf_sample_init,
 	.cleanup  = tcf_sample_cleanup,
-- 
2.29.2