net: sched: extract qstats update code into functions

Extract common code that increments cpu_qstats counters into standalone act
API functions. Change hardware offloaded actions that use percpu counter
allocation to use the new functions instead of accessing cpu_qstats
directly.

This commit doesn't change functionality.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/act_api.h

@@ -193,6 +193,22 @@ static inline void tcf_action_update_bstats(struct tc_action *a,
 	bstats_cpu_update(this_cpu_ptr(a->cpu_bstats), skb);
 }
 
+static inline struct gnet_stats_queue *
+tcf_action_get_qstats(struct tc_action *a)
+{
+	return this_cpu_ptr(a->cpu_qstats);
+}
+
+static inline void tcf_action_inc_drop_qstats(struct tc_action *a)
+{
+	qstats_drop_inc(this_cpu_ptr(a->cpu_qstats));
+}
+
+static inline void tcf_action_inc_overlimit_qstats(struct tc_action *a)
+{
+	qstats_overlimit_inc(this_cpu_ptr(a->cpu_qstats));
+}
+
 void tcf_action_update_stats(struct tc_action *a, u64 bytes, u32 packets,
 			     bool drop, bool hw);
 int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int);

net/sched/act_csum.c

@@ -624,7 +624,7 @@ static int tcf_csum_act(struct sk_buff *skb, const struct tc_action *a,
 	return action;
 
 drop:
-	qstats_drop_inc(this_cpu_ptr(p->common.cpu_qstats));
+	tcf_action_inc_drop_qstats(&p->common);
 	action = TC_ACT_SHOT;
 	goto out;
 }

net/sched/act_ct.c

@@ -469,7 +469,7 @@ static int tcf_ct_act(struct sk_buff *skb, const struct tc_action *a,
 	return retval;
 
 drop:
-	qstats_drop_inc(this_cpu_ptr(a->cpu_qstats));
+	tcf_action_inc_drop_qstats(&c->common);
 	return TC_ACT_SHOT;
 }
 

net/sched/act_gact.c

@@ -163,7 +163,7 @@ static int tcf_gact_act(struct sk_buff *skb, const struct tc_action *a,
 #endif
 	tcf_action_update_bstats(&gact->common, skb);
 	if (action == TC_ACT_SHOT)
-		qstats_drop_inc(this_cpu_ptr(gact->common.cpu_qstats));
+		tcf_action_inc_drop_qstats(&gact->common);
 
 	tcf_lastuse_update(&gact->tcf_tm);
 

net/sched/act_mirred.c

@@ -303,7 +303,7 @@ static int tcf_mirred_act(struct sk_buff *skb, const struct tc_action *a,
 
 	if (err) {
 out:
-		qstats_overlimit_inc(this_cpu_ptr(m->common.cpu_qstats));
+		tcf_action_inc_overlimit_qstats(&m->common);
 		if (tcf_mirred_is_act_redirect(m_eaction))
 			retval = TC_ACT_SHOT;
 	}

net/sched/act_vlan.c

@@ -88,7 +88,7 @@ static int tcf_vlan_act(struct sk_buff *skb, const struct tc_action *a,
 	return action;
 
 drop:
-	qstats_drop_inc(this_cpu_ptr(v->common.cpu_qstats));
+	tcf_action_inc_drop_qstats(&v->common);
 	return TC_ACT_SHOT;
 }