1 files changed, 10 insertions, 12 deletions

diff --git a/net/sched/act_skbmod.c b/net/sched/act_skbmod.c
index dc0229693461..a9e0c1326e2a 100644
--- a/net/sched/act_skbmod.c
+++ b/net/sched/act_skbmod.c
@@ -27,19 +27,18 @@ TC_INDIRECT_SCOPE int tcf_skbmod_act(struct sk_buff *skb,
 				     struct tcf_result *res)
 {
 	struct tcf_skbmod *d = to_skbmod(a);
-	int action, max_edit_len, err;
 	struct tcf_skbmod_params *p;
+	int max_edit_len, err;
 	u64 flags;
 
 	tcf_lastuse_update(&d->tcf_tm);
 	bstats_update(this_cpu_ptr(d->common.cpu_bstats), skb);
 
-	action = READ_ONCE(d->tcf_action);
-	if (unlikely(action == TC_ACT_SHOT))
+	p = rcu_dereference_bh(d->skbmod_p);
+	if (unlikely(p->action == TC_ACT_SHOT))
 		goto drop;
 
 	max_edit_len = skb_mac_header_len(skb);
-	p = rcu_dereference_bh(d->skbmod_p);
 	flags = p->flags;
 
 	/* tcf_skbmod_init() guarantees "flags" to be one of the following:
@@ -85,7 +84,7 @@ TC_INDIRECT_SCOPE int tcf_skbmod_act(struct sk_buff *skb,
 		INET_ECN_set_ce(skb);
 
 out:
-	return action;
+	return p->action;
 
 drop:
 	qstats_overlimit_inc(this_cpu_ptr(d->common.cpu_qstats));
@@ -193,7 +192,7 @@ static int tcf_skbmod_init(struct net *net, struct nlattr *nla,
 	}
 
 	p->flags = lflags;
-
+	p->action = parm->action;
 	if (ovr)
 		spin_lock_bh(&d->tcf_lock);
 	/* Protected by tcf_lock if overwriting existing action. */
@@ -248,10 +247,9 @@ static int tcf_skbmod_dump(struct sk_buff *skb, struct tc_action *a,
 	opt.index   = d->tcf_index;
 	opt.refcnt  = refcount_read(&d->tcf_refcnt) - ref;
 	opt.bindcnt = atomic_read(&d->tcf_bindcnt) - bind;
-	spin_lock_bh(&d->tcf_lock);
-	opt.action = d->tcf_action;
-	p = rcu_dereference_protected(d->skbmod_p,
-				      lockdep_is_held(&d->tcf_lock));
+	rcu_read_lock();
+	p = rcu_dereference(d->skbmod_p);
+	opt.action = p->action;
 	opt.flags  = p->flags;
 	if (nla_put(skb, TCA_SKBMOD_PARMS, sizeof(opt), &opt))
 		goto nla_put_failure;
@@ -269,10 +267,10 @@ static int tcf_skbmod_dump(struct sk_buff *skb, struct tc_action *a,
 	if (nla_put_64bit(skb, TCA_SKBMOD_TM, sizeof(t), &t, TCA_SKBMOD_PAD))
 		goto nla_put_failure;
 
-	spin_unlock_bh(&d->tcf_lock);
+	rcu_read_unlock();
 	return skb->len;
 nla_put_failure:
-	spin_unlock_bh(&d->tcf_lock);
+	rcu_read_unlock();
 	nlmsg_trim(skb, b);
 	return -1;
 }