net/sched: act_gate: use percpu stats

The tc action act_gate was using shared stats, move it to percpu stats.

tdc results:
1..12
ok 1 5153 - Add gate action with priority and sched-entry
ok 2 7189 - Add gate action with base-time
ok 3 a721 - Add gate action with cycle-time
ok 4 c029 - Add gate action with cycle-time-ext
ok 5 3719 - Replace gate base-time action
ok 6 d821 - Delete gate action with valid index
ok 7 3128 - Delete gate action with invalid index
ok 8 7837 - List gate actions
ok 9 9273 - Flush gate actions
ok 10 c829 - Add gate action with duplicate index
ok 11 3043 - Add gate action with invalid index
ok 12 2930 - Add gate action with cookie

Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/net/sched/act_gate.c b/net/sched/act_gate.c
index 9b8def0..c9a811f 100644 (file)
--- a/net/sched/act_gate.c
+++ b/net/sched/act_gate.c
@@ -119,35 +119,37 @@ TC_INDIRECT_SCOPE int tcf_gate_act(struct sk_buff *skb,
                                   struct tcf_result *res)
 {
        struct tcf_gate *gact = to_gate(a);
-
-       spin_lock(&gact->tcf_lock);
+       int action = READ_ONCE(gact->tcf_action);
 
        tcf_lastuse_update(&gact->tcf_tm);
-       bstats_update(&gact->tcf_bstats, skb);
+       tcf_action_update_bstats(&gact->common, skb);
 
+       spin_lock(&gact->tcf_lock);
        if (unlikely(gact->current_gate_status & GATE_ACT_PENDING)) {
                spin_unlock(&gact->tcf_lock);
-               return gact->tcf_action;
+               return action;
        }
 
-       if (!(gact->current_gate_status & GATE_ACT_GATE_OPEN))
+       if (!(gact->current_gate_status & GATE_ACT_GATE_OPEN)) {
+               spin_unlock(&gact->tcf_lock);
                goto drop;
+       }
 
        if (gact->current_max_octets >= 0) {
                gact->current_entry_octets += qdisc_pkt_len(skb);
                if (gact->current_entry_octets > gact->current_max_octets) {
-                       gact->tcf_qstats.overlimits++;
-                       goto drop;
+                       spin_unlock(&gact->tcf_lock);
+                       goto overlimit;
                }
        }
-
        spin_unlock(&gact->tcf_lock);
 
-       return gact->tcf_action;
-drop:
-       gact->tcf_qstats.drops++;
-       spin_unlock(&gact->tcf_lock);
+       return action;
 
+overlimit:
+       tcf_action_inc_overlimit_qstats(&gact->common);
+drop:
+       tcf_action_inc_drop_qstats(&gact->common);
        return TC_ACT_SHOT;
 }
 
@@ -357,8 +359,8 @@ static int tcf_gate_init(struct net *net, struct nlattr *nla,
                return 0;
 
        if (!err) {
-               ret = tcf_idr_create(tn, index, est, a,
-                                    &act_gate_ops, bind, false, flags);
+               ret = tcf_idr_create_from_flags(tn, index, est, a,
+                                               &act_gate_ops, bind, flags);
                if (ret) {
                        tcf_idr_cleanup(tn, index);
                        return ret;