--- zzzz-none-000/linux-3.10.107/net/sched/sch_prio.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/sched/sch_prio.c	2021-02-04 17:41:59.000000000 +0000
@@ -24,7 +24,7 @@
 
 struct prio_sched_data {
 	int bands;
-	struct tcf_proto *filter_list;
+	struct tcf_proto __rcu *filter_list;
 	u8  prio2band[TC_PRIO_MAX+1];
 	struct Qdisc *queues[TCQ_PRIO_BANDS];
 };
@@ -36,11 +36,13 @@
 	struct prio_sched_data *q = qdisc_priv(sch);
 	u32 band = skb->priority;
 	struct tcf_result res;
+	struct tcf_proto *fl;
 	int err;
 
 	*qerr = NET_XMIT_SUCCESS | __NET_XMIT_BYPASS;
 	if (TC_H_MAJ(skb->priority) != sch->handle) {
-		err = tc_classify(skb, q->filter_list, &res);
+		fl = rcu_dereference_bh(q->filter_list);
+		err = tc_classify(skb, fl, &res, false);
 #ifdef CONFIG_NET_CLS_ACT
 		switch (err) {
 		case TC_ACT_STOLEN:
@@ -50,7 +52,7 @@
 			return NULL;
 		}
 #endif
-		if (!q->filter_list || err < 0) {
+		if (!fl || err < 0) {
 			if (TC_H_MAJ(band))
 				band = 0;
 			return q->queues[q->prio2band[band & TC_PRIO_MAX]];
@@ -75,7 +77,7 @@
 	if (qdisc == NULL) {
 
 		if (ret & __NET_XMIT_BYPASS)
-			sch->qstats.drops++;
+			qdisc_qstats_drop(sch);
 		kfree_skb(skb);
 		return ret;
 	}
@@ -87,7 +89,7 @@
 		return NET_XMIT_SUCCESS;
 	}
 	if (net_xmit_drop_count(ret))
-		sch->qstats.drops++;
+		qdisc_qstats_drop(sch);
 	return ret;
 }
 
@@ -189,7 +191,7 @@
 		struct Qdisc *child = q->queues[i];
 		q->queues[i] = &noop_qdisc;
 		if (child != &noop_qdisc) {
-			qdisc_tree_decrease_qlen(child, child->q.qlen);
+			qdisc_tree_reduce_backlog(child, child->q.qlen, child->qstats.backlog);
 			qdisc_destroy(child);
 		}
 	}
@@ -208,8 +210,9 @@
 				q->queues[i] = child;
 
 				if (old != &noop_qdisc) {
-					qdisc_tree_decrease_qlen(old,
-								 old->q.qlen);
+					qdisc_tree_reduce_backlog(old,
+								  old->q.qlen,
+								  old->qstats.backlog);
 					qdisc_destroy(old);
 				}
 				sch_tree_unlock(sch);
@@ -266,13 +269,7 @@
 	if (new == NULL)
 		new = &noop_qdisc;
 
-	sch_tree_lock(sch);
-	*old = q->queues[band];
-	q->queues[band] = new;
-	qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
-	qdisc_reset(*old);
-	sch_tree_unlock(sch);
-
+	*old = qdisc_replace(sch, new, &q->queues[band]);
 	return 0;
 }
 
@@ -322,9 +319,8 @@
 	struct Qdisc *cl_q;
 
 	cl_q = q->queues[cl - 1];
-	cl_q->qstats.qlen = cl_q->q.qlen;
-	if (gnet_stats_copy_basic(d, &cl_q->bstats) < 0 ||
-	    gnet_stats_copy_queue(d, &cl_q->qstats) < 0)
+	if (gnet_stats_copy_basic(d, NULL, &cl_q->bstats) < 0 ||
+	    gnet_stats_copy_queue(d, NULL, &cl_q->qstats, cl_q->q.qlen) < 0)
 		return -1;
 
 	return 0;
@@ -351,7 +347,8 @@
 	}
 }
 
-static struct tcf_proto **prio_find_tcf(struct Qdisc *sch, unsigned long cl)
+static struct tcf_proto __rcu **prio_find_tcf(struct Qdisc *sch,
+					      unsigned long cl)
 {
 	struct prio_sched_data *q = qdisc_priv(sch);