net sched actions police: peg drop stats for conforming traffic

Roman Mashak · davem330 · commit f71b109f1730 · 2016-09-19T22:04:14.000-04:00
setting conforming action to drop is a valid policy.
When it is set we need to at least see the stats indicating it
for debugging.

Signed-off-by: Roman Mashak &lt;mrv@mojatatu.com&gt;
Signed-off-by: Jamal Hadi Salim &lt;jhs@mojatatu.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
@@ -249,6 +249,8 @@ static int tcf_act_police(struct sk_buff *skb, const struct tc_action *a,
 			police->tcfp_t_c = now;
 			police->tcfp_toks = toks;
 			police->tcfp_ptoks = ptoks;
+			if (police->tcfp_result == TC_ACT_SHOT)
+				police->tcf_qstats.drops++;
 			spin_unlock(&police->tcf_lock);
 			return police->tcfp_result;
 		}

Original file line number	Diff line number	Diff line change
`@@ -249,6 +249,8 @@ static int tcf_act_police(struct sk_buff skb, const struct tc_action a,`
`249`	`249`	`police->tcfp_t_c = now;`
`250`	`250`	`police->tcfp_toks = toks;`
`251`	`251`	`police->tcfp_ptoks = ptoks;`
	`252`	`+ if (police->tcfp_result == TC_ACT_SHOT)`
	`253`	`+ police->tcf_qstats.drops++;`
`252`	`254`	`spin_unlock(&police->tcf_lock);`
`253`	`255`	`return police->tcfp_result;`
`254`	`256`	`}`