Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

61 files changed, 129 insertions, 137 deletions

diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 470c70deff..8180d0c12f 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -737,16 +737,6 @@ config NET_ACT_SAMPLE
 	  To compile this code as a module, choose M here: the
 	  module will be called act_sample.
 
-config NET_ACT_IPT
-	tristate "IPtables targets"
-	depends on NET_CLS_ACT && NETFILTER && NETFILTER_XTABLES
-	help
-	  Say Y here to be able to invoke iptables targets after successful
-	  classification.
-
-	  To compile this code as a module, choose M here: the
-	  module will be called act_ipt.
-
 config NET_ACT_NAT
 	tristate "Stateless NAT"
 	depends on NET_CLS_ACT
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 3e30d72604..2520708b06 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -830,7 +830,6 @@ int tcf_idr_check_alloc(struct tc_action_net *tn, u32 *index,
 	u32 max;
 
 	if (*index) {
-again:
 		rcu_read_lock();
 		p = idr_find(&idrinfo->action_idr, *index);
 
@@ -839,7 +838,7 @@ again:
 			 * index but did not assign the pointer yet.
 			 */
 			rcu_read_unlock();
-			goto again;
+			return -EAGAIN;
 		}
 
 		if (!p) {
@@ -1363,7 +1362,7 @@ struct tc_action_ops *tc_action_load_ops(struct nlattr *nla, u32 flags,
 
 		if (rtnl_held)
 			rtnl_unlock();
-		request_module("act_%s", act_name);
+		request_module(NET_ACT_ALIAS_PREFIX "%s", act_name);
 		if (rtnl_held)
 			rtnl_lock();
 
diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c
index 6cfee66581..0e3cf11ae5 100644
--- a/net/sched/act_bpf.c
+++ b/net/sched/act_bpf.c
@@ -401,6 +401,7 @@ static struct tc_action_ops act_bpf_ops __read_mostly = {
 	.init		=	tcf_bpf_init,
 	.size		=	sizeof(struct tcf_bpf),
 };
+MODULE_ALIAS_NET_ACT("bpf");
 
 static __net_init int bpf_init_net(struct net *net)
 {
diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c
index f876275665..0fce631e7c 100644
--- a/net/sched/act_connmark.c
+++ b/net/sched/act_connmark.c
@@ -242,6 +242,7 @@ static struct tc_action_ops act_connmark_ops = {
 	.cleanup	=	tcf_connmark_cleanup,
 	.size		=	sizeof(struct tcf_connmark_info),
 };
+MODULE_ALIAS_NET_ACT("connmark");
 
 static __net_init int connmark_init_net(struct net *net)
 {
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index 7f8b1f2f2e..5cc8e407e7 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -709,6 +709,7 @@ static struct tc_action_ops act_csum_ops = {
 	.offload_act_setup = tcf_csum_offload_act_setup,
 	.size		= sizeof(struct tcf_csum),
 };
+MODULE_ALIAS_NET_ACT("csum");
 
 static __net_init int csum_init_net(struct net *net)
 {
diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
index 6124d8b128..2a96d9c1db 100644
--- a/net/sched/act_ct.c
+++ b/net/sched/act_ct.c
@@ -41,21 +41,26 @@ static struct workqueue_struct *act_ct_wq;
 static struct rhashtable zones_ht;
 static DEFINE_MUTEX(zones_mutex);
 
+struct zones_ht_key {
+	struct net *net;
+	u16 zone;
+};
+
 struct tcf_ct_flow_table {
 	struct rhash_head node; /* In zones tables */
 
 	struct rcu_work rwork;
 	struct nf_flowtable nf_ft;
 	refcount_t ref;
-	u16 zone;
+	struct zones_ht_key key;
 
 	bool dying;
 };
 
 static const struct rhashtable_params zones_params = {
 	.head_offset = offsetof(struct tcf_ct_flow_table, node),
-	.key_offset = offsetof(struct tcf_ct_flow_table, zone),
-	.key_len = sizeof_field(struct tcf_ct_flow_table, zone),
+	.key_offset = offsetof(struct tcf_ct_flow_table, key),
+	.key_len = sizeof_field(struct tcf_ct_flow_table, key),
 	.automatic_shrinking = true,
 };
 
@@ -316,11 +321,12 @@ static struct nf_flowtable_type flowtable_ct = {
 
 static int tcf_ct_flow_table_get(struct net *net, struct tcf_ct_params *params)
 {
+	struct zones_ht_key key = { .net = net, .zone = params->zone };
 	struct tcf_ct_flow_table *ct_ft;
 	int err = -ENOMEM;
 
 	mutex_lock(&zones_mutex);
-	ct_ft = rhashtable_lookup_fast(&zones_ht, &params->zone, zones_params);
+	ct_ft = rhashtable_lookup_fast(&zones_ht, &key, zones_params);
 	if (ct_ft && refcount_inc_not_zero(&ct_ft->ref))
 		goto out_unlock;
 
@@ -329,7 +335,7 @@ static int tcf_ct_flow_table_get(struct net *net, struct tcf_ct_params *params)
 		goto err_alloc;
 	refcount_set(&ct_ft->ref, 1);
 
-	ct_ft->zone = params->zone;
+	ct_ft->key = key;
 	err = rhashtable_insert_fast(&zones_ht, &ct_ft->node, zones_params);
 	if (err)
 		goto err_insert;
@@ -1600,6 +1606,7 @@ static struct tc_action_ops act_ct_ops = {
 	.offload_act_setup =	tcf_ct_offload_act_setup,
 	.size		=	sizeof(struct tcf_ct),
 };
+MODULE_ALIAS_NET_ACT("ct");
 
 static __net_init int ct_init_net(struct net *net)
 {
diff --git a/net/sched/act_ctinfo.c b/net/sched/act_ctinfo.c
index e620f9a84a..5dd41a0121 100644
--- a/net/sched/act_ctinfo.c
+++ b/net/sched/act_ctinfo.c
@@ -363,6 +363,7 @@ static struct tc_action_ops act_ctinfo_ops = {
 	.cleanup= tcf_ctinfo_cleanup,
 	.size	= sizeof(struct tcf_ctinfo),
 };
+MODULE_ALIAS_NET_ACT("ctinfo");
 
 static __net_init int ctinfo_init_net(struct net *net)
 {
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index 4af3b7ec24..e949280eb8 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -296,6 +296,7 @@ static struct tc_action_ops act_gact_ops = {
 	.offload_act_setup =	tcf_gact_offload_act_setup,
 	.size		=	sizeof(struct tcf_gact),
 };
+MODULE_ALIAS_NET_ACT("gact");
 
 static __net_init int gact_init_net(struct net *net)
 {
diff --git a/net/sched/act_gate.c b/net/sched/act_gate.c
index c681cd011a..1dd7412539 100644
--- a/net/sched/act_gate.c
+++ b/net/sched/act_gate.c
@@ -645,6 +645,7 @@ static struct tc_action_ops act_gate_ops = {
 	.offload_act_setup =	tcf_gate_offload_act_setup,
 	.size		=	sizeof(struct tcf_gate),
 };
+MODULE_ALIAS_NET_ACT("gate");
 
 static __net_init int gate_init_net(struct net *net)
 {
diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c
index 0e867d13be..107c6d83dc 100644
--- a/net/sched/act_ife.c
+++ b/net/sched/act_ife.c
@@ -889,6 +889,7 @@ static struct tc_action_ops act_ife_ops = {
 	.init = tcf_ife_init,
 	.size =	sizeof(struct tcf_ife_info),
 };
+MODULE_ALIAS_NET_ACT("ife");
 
 static __net_init int ife_init_net(struct net *net)
 {
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 6faa7d00da..5b38143659 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -635,6 +635,7 @@ static struct tc_action_ops act_mirred_ops = {
 	.size		=	sizeof(struct tcf_mirred),
 	.get_dev	=	tcf_mirred_get_dev,
 };
+MODULE_ALIAS_NET_ACT("mirred");
 
 static __net_init int mirred_init_net(struct net *net)
 {
diff --git a/net/sched/act_mpls.c b/net/sched/act_mpls.c
index 34b8edb6cc..44a37a71ae 100644
--- a/net/sched/act_mpls.c
+++ b/net/sched/act_mpls.c
@@ -452,6 +452,7 @@ static struct tc_action_ops act_mpls_ops = {
 	.offload_act_setup =	tcf_mpls_offload_act_setup,
 	.size		=	sizeof(struct tcf_mpls),
 };
+MODULE_ALIAS_NET_ACT("mpls");
 
 static __net_init int mpls_init_net(struct net *net)
 {
diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index a180e72463..d541f55380 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -324,6 +324,7 @@ static struct tc_action_ops act_nat_ops = {
 	.cleanup	=	tcf_nat_cleanup,
 	.size		=	sizeof(struct tcf_nat),
 };
+MODULE_ALIAS_NET_ACT("nat");
 
 static __net_init int nat_init_net(struct net *net)
 {
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index 2ef22969f2..fc0a35a7b6 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -515,11 +515,11 @@ static int tcf_pedit_dump(struct sk_buff *skb, struct tc_action *a,
 		spin_unlock_bh(&p->tcf_lock);
 		return -ENOBUFS;
 	}
+	opt->nkeys = parms->tcfp_nkeys;
 
 	memcpy(opt->keys, parms->tcfp_keys,
 	       flex_array_size(opt, keys, parms->tcfp_nkeys));
 	opt->index = p->tcf_index;
-	opt->nkeys = parms->tcfp_nkeys;
 	opt->flags = parms->tcfp_flags;
 	opt->action = p->tcf_action;
 	opt->refcnt = refcount_read(&p->tcf_refcnt) - ref;
@@ -620,6 +620,7 @@ static struct tc_action_ops act_pedit_ops = {
 	.offload_act_setup =	tcf_pedit_offload_act_setup,
 	.size		=	sizeof(struct tcf_pedit),
 };
+MODULE_ALIAS_NET_ACT("pedit");
 
 static __net_init int pedit_init_net(struct net *net)
 {
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index e119b4a3db..8555125ed3 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -502,6 +502,7 @@ static struct tc_action_ops act_police_ops = {
 	.offload_act_setup =	tcf_police_offload_act_setup,
 	.size		=	sizeof(struct tcf_police),
 };
+MODULE_ALIAS_NET_ACT("police");
 
 static __net_init int police_init_net(struct net *net)
 {
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index c5c61efe6d..a69b53d540 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -316,6 +316,7 @@ static struct tc_action_ops act_sample_ops = {
 	.offload_act_setup    = tcf_sample_offload_act_setup,
 	.size	  = sizeof(struct tcf_sample),
 };
+MODULE_ALIAS_NET_ACT("sample");
 
 static __net_init int sample_init_net(struct net *net)
 {
diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index 0a3e928882..f3abe05459 100644
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -209,6 +209,7 @@ static struct tc_action_ops act_simp_ops = {
 	.init		=	tcf_simp_init,
 	.size		=	sizeof(struct tcf_defact),
 };
+MODULE_ALIAS_NET_ACT("simple");
 
 static __net_init int simp_init_net(struct net *net)
 {
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index 754f78b35b..1f1d9ce3e9 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -426,6 +426,7 @@ static struct tc_action_ops act_skbedit_ops = {
 	.offload_act_setup =	tcf_skbedit_offload_act_setup,
 	.size		=	sizeof(struct tcf_skbedit),
 };
+MODULE_ALIAS_NET_ACT("skbedit");
 
 static __net_init int skbedit_init_net(struct net *net)
 {
diff --git a/net/sched/act_skbmod.c b/net/sched/act_skbmod.c
index 0015393910..cd0accaf84 100644
--- a/net/sched/act_skbmod.c
+++ b/net/sched/act_skbmod.c
@@ -287,6 +287,7 @@ static struct tc_action_ops act_skbmod_ops = {
 	.cleanup	=	tcf_skbmod_cleanup,
 	.size		=	sizeof(struct tcf_skbmod),
 };
+MODULE_ALIAS_NET_ACT("skbmod");
 
 static __net_init int skbmod_init_net(struct net *net)
 {
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index 300b08aa82..1536f8b16f 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -842,6 +842,7 @@ static struct tc_action_ops act_tunnel_key_ops = {
 	.offload_act_setup =	tcf_tunnel_key_offload_act_setup,
 	.size		=	sizeof(struct tcf_tunnel_key),
 };
+MODULE_ALIAS_NET_ACT("tunnel_key");
 
 static __net_init int tunnel_key_init_net(struct net *net)
 {
diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c
index 836183011a..22f4b1e8ad 100644
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -427,6 +427,7 @@ static struct tc_action_ops act_vlan_ops = {
 	.offload_act_setup =	tcf_vlan_offload_act_setup,
 	.size		=	sizeof(struct tcf_vlan),
 };
+MODULE_ALIAS_NET_ACT("vlan");
 
 static __net_init int vlan_init_net(struct net *net)
 {
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index ff3d396a65..ca5676b266 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -257,7 +257,7 @@ tcf_proto_lookup_ops(const char *kind, bool rtnl_held,
 #ifdef CONFIG_MODULES
 	if (rtnl_held)
 		rtnl_unlock();
-	request_module("cls_%s", kind);
+	request_module(NET_CLS_ALIAS_PREFIX "%s", kind);
 	if (rtnl_held)
 		rtnl_lock();
 	ops = __tcf_proto_lookup_ops(kind);
diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c
index a1f5693133..ecfaa4f9a0 100644
--- a/net/sched/cls_basic.c
+++ b/net/sched/cls_basic.c
@@ -328,6 +328,7 @@ static struct tcf_proto_ops cls_basic_ops __read_mostly = {
 	.bind_class	=	basic_bind_class,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_CLS("basic");
 
 static int __init init_basic(void)
 {
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index 382c7a71f8..5e83e890f6 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -693,6 +693,7 @@ static struct tcf_proto_ops cls_bpf_ops __read_mostly = {
 	.dump		=	cls_bpf_dump,
 	.bind_class	=	cls_bpf_bind_class,
 };
+MODULE_ALIAS_NET_CLS("bpf");
 
 static int __init cls_bpf_init_mod(void)
 {
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index 7ee8dbf49e..424252982d 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -209,6 +209,7 @@ static struct tcf_proto_ops cls_cgroup_ops __read_mostly = {
 	.dump		=	cls_cgroup_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_CLS("cgroup");
 
 static int __init init_cgroup_cls(void)
 {
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 6ab317b48d..5502998aac 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -702,6 +702,7 @@ static struct tcf_proto_ops cls_flow_ops __read_mostly = {
 	.walk		= flow_walk,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_CLS("flow");
 
 static int __init cls_flow_init(void)
 {
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 6ee7064c82..e1314674b4 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -3659,6 +3659,7 @@ static struct tcf_proto_ops cls_fl_ops __read_mostly = {
 	.owner		= THIS_MODULE,
 	.flags		= TCF_PROTO_OPS_DOIT_UNLOCKED,
 };
+MODULE_ALIAS_NET_CLS("flower");
 
 static int __init cls_fl_init(void)
 {
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index afc534ee0a..cdddc86952 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -433,6 +433,7 @@ static struct tcf_proto_ops cls_fw_ops __read_mostly = {
 	.bind_class	=	fw_bind_class,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_CLS("fw");
 
 static int __init init_fw(void)
 {
diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
index c4ed11df62..9f1e62ca50 100644
--- a/net/sched/cls_matchall.c
+++ b/net/sched/cls_matchall.c
@@ -398,6 +398,7 @@ static struct tcf_proto_ops cls_mall_ops __read_mostly = {
 	.bind_class	= mall_bind_class,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_CLS("matchall");
 
 static int __init cls_mall_init(void)
 {
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 12a505db41..b9c58c040c 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -671,6 +671,7 @@ static struct tcf_proto_ops cls_route4_ops __read_mostly = {
 	.bind_class	=	route4_bind_class,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_CLS("route");
 
 static int __init init_route4(void)
 {
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index 289e1755c2..9412d88a99 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -1453,6 +1453,7 @@ static struct tcf_proto_ops cls_u32_ops __read_mostly = {
 	.bind_class	=	u32_bind_class,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_CLS("u32");
 
 static int __init init_u32(void)
 {
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 31e38a614f..6292d6d73b 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -228,7 +228,7 @@ int qdisc_set_default(const char *name)
 	if (!ops) {
 		/* Not found, drop lock and try to load module */
 		write_unlock(&qdisc_mod_lock);
-		request_module("sch_%s", name);
+		request_module(NET_SCH_ALIAS_PREFIX "%s", name);
 		write_lock(&qdisc_mod_lock);
 
 		ops = qdisc_lookup_default(name);
@@ -1275,7 +1275,7 @@ static struct Qdisc *qdisc_create(struct net_device *dev,
 			 * go away in the mean time.
 			 */
 			rtnl_unlock();
-			request_module("sch_%s", name);
+			request_module(NET_SCH_ALIAS_PREFIX "%s", name);
 			rtnl_lock();
 			ops = qdisc_lookup_ops(kind);
 			if (ops != NULL) {
@@ -1389,6 +1389,7 @@ err_out4:
 		ops->destroy(sch);
 	qdisc_put_stab(rtnl_dereference(sch->stab));
 err_out3:
+	lockdep_unregister_key(&sch->root_lock_key);
 	netdev_put(dev, &sch->dev_tracker);
 	qdisc_free(sch);
 err_out2:
@@ -2410,7 +2411,7 @@ static struct pernet_operations psched_net_ops = {
 	.exit = psched_net_exit,
 };
 
-#if IS_ENABLED(CONFIG_RETPOLINE)
+#if IS_ENABLED(CONFIG_MITIGATION_RETPOLINE)
 DEFINE_STATIC_KEY_FALSE(tc_skip_wrapper);
 #endif
 
diff --git a/net/sched/sch_cake.c b/net/sched/sch_cake.c
index 9cff995586..edee926ccd 100644
--- a/net/sched/sch_cake.c
+++ b/net/sched/sch_cake.c
@@ -3103,6 +3103,7 @@ static struct Qdisc_ops cake_qdisc_ops __read_mostly = {
 	.dump_stats	=	cake_dump_stats,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("cake");
 
 static int __init cake_module_init(void)
 {
diff --git a/net/sched/sch_cbs.c b/net/sched/sch_cbs.c
index beece8e82c..69001eff03 100644
--- a/net/sched/sch_cbs.c
+++ b/net/sched/sch_cbs.c
@@ -546,6 +546,7 @@ static struct Qdisc_ops cbs_qdisc_ops __read_mostly = {
 	.dump		=	cbs_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("cbs");
 
 static struct notifier_block cbs_device_notifier = {
 	.notifier_call = cbs_dev_notifier,
diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
index ae1da08e26..ea108030c6 100644
--- a/net/sched/sch_choke.c
+++ b/net/sched/sch_choke.c
@@ -498,6 +498,7 @@ static struct Qdisc_ops choke_qdisc_ops __read_mostly = {
 	.dump_stats	=	choke_dump_stats,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("choke");
 
 static int __init choke_module_init(void)
 {
diff --git a/net/sched/sch_codel.c b/net/sched/sch_codel.c
index d7a4874543..ecb3f164bb 100644
--- a/net/sched/sch_codel.c
+++ b/net/sched/sch_codel.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
  * Codel - The Controlled-Delay Active Queue Management algorithm
  *
@@ -7,37 +8,6 @@
  *  Implemented on linux by :
  *  Copyright (C) 2012 Michael D. Taht <dave.taht@bufferbloat.net>
  *  Copyright (C) 2012,2015 Eric Dumazet <edumazet@google.com>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The names of the authors may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * Alternatively, provided that this notice is retained in full, this
- * software may be distributed under the terms of the GNU General
- * Public License ("GPL") version 2, in which case the provisions of the
- * GPL apply INSTEAD OF those given above.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
  */
 
 #include <linux/module.h>
@@ -287,6 +257,7 @@ static struct Qdisc_ops codel_qdisc_ops __read_mostly = {
 	.dump_stats	=	codel_dump_stats,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("codel");
 
 static int __init codel_module_init(void)
 {
diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c
index 097740a9af..c69b999fae 100644
--- a/net/sched/sch_drr.c
+++ b/net/sched/sch_drr.c
@@ -481,6 +481,7 @@ static struct Qdisc_ops drr_qdisc_ops __read_mostly = {
 	.destroy	= drr_destroy_qdisc,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("drr");
 
 static int __init drr_init(void)
 {
diff --git a/net/sched/sch_etf.c b/net/sched/sch_etf.c
index 4808159a54..2e4bef713b 100644
--- a/net/sched/sch_etf.c
+++ b/net/sched/sch_etf.c
@@ -500,6 +500,7 @@ static struct Qdisc_ops etf_qdisc_ops __read_mostly = {
 	.dump		=	etf_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("etf");
 
 static int __init etf_module_init(void)
 {
diff --git a/net/sched/sch_ets.c b/net/sched/sch_ets.c
index f7c8849594..835b4460b4 100644
--- a/net/sched/sch_ets.c
+++ b/net/sched/sch_ets.c
@@ -812,6 +812,7 @@ static struct Qdisc_ops ets_qdisc_ops __read_mostly = {
 	.dump		= ets_qdisc_dump,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("ets");
 
 static int __init ets_init(void)
 {
diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c
index 3a31c47fea..cdf23ff16f 100644
--- a/net/sched/sch_fq.c
+++ b/net/sched/sch_fq.c
@@ -1264,6 +1264,7 @@ static struct Qdisc_ops fq_qdisc_ops __read_mostly = {
 	.dump_stats	=	fq_dump_stats,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("fq");
 
 static int __init fq_module_init(void)
 {
diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index 8c4fee0634..79f9d6de6c 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -717,6 +717,7 @@ static struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
 	.dump_stats =	fq_codel_dump_stats,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("fq_codel");
 
 static int __init fq_codel_module_init(void)
 {
diff --git a/net/sched/sch_fq_pie.c b/net/sched/sch_fq_pie.c
index 5b595773e5..358cf304f4 100644
--- a/net/sched/sch_fq_pie.c
+++ b/net/sched/sch_fq_pie.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/jhash.h>
+#include <linux/module.h>
 #include <linux/sizes.h>
 #include <linux/vmalloc.h>
 #include <net/pkt_cls.h>
@@ -563,6 +564,7 @@ static struct Qdisc_ops fq_pie_qdisc_ops __read_mostly = {
 	.dump_stats	= fq_pie_dump_stats,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("fq_pie");
 
 static int __init fq_pie_module_init(void)
 {
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index a498b5d7c5..fb32984d7a 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -27,6 +27,7 @@
 #include <net/sch_generic.h>
 #include <net/pkt_sched.h>
 #include <net/dst.h>
+#include <net/hotdata.h>
 #include <trace/events/qdisc.h>
 #include <trace/events/net.h>
 #include <net/xfrm.h>
@@ -409,7 +410,7 @@ static inline bool qdisc_restart(struct Qdisc *q, int *packets)
 
 void __qdisc_run(struct Qdisc *q)
 {
-	int quota = READ_ONCE(dev_tx_weight);
+	int quota = READ_ONCE(net_hotdata.dev_tx_weight);
 	int packets;
 
 	while (qdisc_restart(q, &packets)) {
@@ -672,6 +673,7 @@ struct Qdisc noop_qdisc = {
 		.qlen = 0,
 		.lock = __SPIN_LOCK_UNLOCKED(noop_qdisc.skb_bad_txq.lock),
 	},
+	.owner = -1,
 };
 EXPORT_SYMBOL(noop_qdisc);
 
@@ -944,7 +946,9 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
 	__skb_queue_head_init(&sch->gso_skb);
 	__skb_queue_head_init(&sch->skb_bad_txq);
 	gnet_stats_basic_sync_init(&sch->bstats);
+	lockdep_register_key(&sch->root_lock_key);
 	spin_lock_init(&sch->q.lock);
+	lockdep_set_class(&sch->q.lock, &sch->root_lock_key);
 
 	if (ops->static_flags & TCQ_F_CPUSTATS) {
 		sch->cpu_bstats =
@@ -979,6 +983,7 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
 
 	return sch;
 errout1:
+	lockdep_unregister_key(&sch->root_lock_key);
 	kfree(sch);
 errout:
 	return ERR_PTR(err);
@@ -1067,6 +1072,7 @@ static void __qdisc_destroy(struct Qdisc *qdisc)
 	if (ops->destroy)
 		ops->destroy(qdisc);
 
+	lockdep_unregister_key(&qdisc->root_lock_key);
 	module_put(ops->owner);
 	netdev_put(dev, &qdisc->dev_tracker);
 
diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
index 8c61eb3dc9..79ba9dc702 100644
--- a/net/sched/sch_gred.c
+++ b/net/sched/sch_gred.c
@@ -930,6 +930,7 @@ static struct Qdisc_ops gred_qdisc_ops __read_mostly = {
 	.dump		=	gred_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("gred");
 
 static int __init gred_module_init(void)
 {
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 16c45da403..4e626df742 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1679,6 +1679,7 @@ static struct Qdisc_ops hfsc_qdisc_ops __read_mostly = {
 	.priv_size	= sizeof(struct hfsc_sched),
 	.owner		= THIS_MODULE
 };
+MODULE_ALIAS_NET_SCH("hfsc");
 
 static int __init
 hfsc_init(void)
diff --git a/net/sched/sch_hhf.c b/net/sched/sch_hhf.c
index d26cd436cb..3f906df143 100644
--- a/net/sched/sch_hhf.c
+++ b/net/sched/sch_hhf.c
@@ -702,6 +702,7 @@ static struct Qdisc_ops hhf_qdisc_ops __read_mostly = {
 	.dump_stats	=	hhf_dump_stats,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("hhf");
 
 static int __init hhf_module_init(void)
 {
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 7349233eaa..ff3de37874 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1039,13 +1039,6 @@ static void htb_work_func(struct work_struct *work)
 	rcu_read_unlock();
 }
 
-static void htb_set_lockdep_class_child(struct Qdisc *q)
-{
-	static struct lock_class_key child_key;
-
-	lockdep_set_class(qdisc_lock(q), &child_key);
-}
-
 static int htb_offload(struct net_device *dev, struct tc_htb_qopt_offload *opt)
 {
 	return dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_QDISC_HTB, opt);
@@ -1132,7 +1125,6 @@ static int htb_init(struct Qdisc *sch, struct nlattr *opt,
 			return -ENOMEM;
 		}
 
-		htb_set_lockdep_class_child(qdisc);
 		q->direct_qdiscs[ntx] = qdisc;
 		qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;
 	}
@@ -1468,7 +1460,6 @@ static int htb_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
 	}
 
 	if (q->offload) {
-		htb_set_lockdep_class_child(new);
 		/* One ref for cl->leaf.q, the other for dev_queue->qdisc. */
 		qdisc_refcount_inc(new);
 		old_q = htb_graft_helper(dev_queue, new);
@@ -1733,11 +1724,8 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg,
 		new_q = qdisc_create_dflt(dev_queue, &pfifo_qdisc_ops,
 					  cl->parent->common.classid,
 					  NULL);
-		if (q->offload) {
-			if (new_q)
-				htb_set_lockdep_class_child(new_q);
+		if (q->offload)
 			htb_parent_to_leaf_offload(sch, dev_queue, new_q);
-		}
 	}
 
 	sch_tree_lock(sch);
@@ -1947,13 +1935,9 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
 		new_q = qdisc_create_dflt(dev_queue, &pfifo_qdisc_ops,
 					  classid, NULL);
 		if (q->offload) {
-			if (new_q) {
-				htb_set_lockdep_class_child(new_q);
-				/* One ref for cl->leaf.q, the other for
-				 * dev_queue->qdisc.
-				 */
+			/* One ref for cl->leaf.q, the other for dev_queue->qdisc. */
+			if (new_q)
 				qdisc_refcount_inc(new_q);
-			}
 			old_q = htb_graft_helper(dev_queue, new_q);
 			/* No qdisc_put needed. */
 			WARN_ON(!(old_q->flags & TCQ_F_BUILTIN));
@@ -2166,6 +2150,7 @@ static struct Qdisc_ops htb_qdisc_ops __read_mostly = {
 	.dump		=	htb_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("htb");
 
 static int __init htb_module_init(void)
 {
diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c
index 5fa9eaa79b..c2ef9dcf91 100644
--- a/net/sched/sch_ingress.c
+++ b/net/sched/sch_ingress.c
@@ -168,6 +168,7 @@ static struct Qdisc_ops ingress_qdisc_ops __read_mostly = {
 	.ingress_block_get	=	ingress_ingress_block_get,
 	.owner			=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("ingress");
 
 struct clsact_sched_data {
 	struct tcf_block *ingress_block;
@@ -344,6 +345,7 @@ static struct Qdisc_ops clsact_qdisc_ops __read_mostly = {
 	.egress_block_get	=	clsact_egress_block_get,
 	.owner			=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("clsact");
 
 static int __init ingress_module_init(void)
 {
@@ -368,6 +370,5 @@ static void __exit ingress_module_exit(void)
 module_init(ingress_module_init);
 module_exit(ingress_module_exit);
 
-MODULE_ALIAS("sch_clsact");
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Ingress and clsact based ingress and egress qdiscs");
diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
index 43e53ee00a..225353fbb3 100644
--- a/net/sched/sch_mqprio.c
+++ b/net/sched/sch_mqprio.c
@@ -774,6 +774,7 @@ static struct Qdisc_ops mqprio_qdisc_ops __read_mostly = {
 	.dump		= mqprio_dump,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("mqprio");
 
 static int __init mqprio_module_init(void)
 {
diff --git a/net/sched/sch_multiq.c b/net/sched/sch_multiq.c
index d66d5f0ec0..06e03f5cd7 100644
--- a/net/sched/sch_multiq.c
+++ b/net/sched/sch_multiq.c
@@ -185,7 +185,7 @@ static int multiq_tune(struct Qdisc *sch, struct nlattr *opt,
 
 	qopt->bands = qdisc_dev(sch)->real_num_tx_queues;
 
-	removed = kmalloc(sizeof(*removed) * (q->max_bands - q->bands),
+	removed = kmalloc(sizeof(*removed) * (q->max_bands - qopt->bands),
 			  GFP_KERNEL);
 	if (!removed)
 		return -ENOMEM;
@@ -395,6 +395,7 @@ static struct Qdisc_ops multiq_qdisc_ops __read_mostly = {
 	.dump		=	multiq_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("multiq");
 
 static int __init multiq_module_init(void)
 {
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index fa678eb885..edc72962ae 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -1293,6 +1293,7 @@ static struct Qdisc_ops netem_qdisc_ops __read_mostly = {
 	.dump		=	netem_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("netem");
 
 
 static int __init netem_module_init(void)
diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c
index 2da6250ec3..1764059b06 100644
--- a/net/sched/sch_pie.c
+++ b/net/sched/sch_pie.c
@@ -556,6 +556,7 @@ static struct Qdisc_ops pie_qdisc_ops __read_mostly = {
 	.dump_stats	= pie_dump_stats,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("pie");
 
 static int __init pie_module_init(void)
 {
diff --git a/net/sched/sch_plug.c b/net/sched/sch_plug.c
index 992f0c8d79..cefb65201e 100644
--- a/net/sched/sch_plug.c
+++ b/net/sched/sch_plug.c
@@ -213,6 +213,7 @@ static struct Qdisc_ops plug_qdisc_ops __read_mostly = {
 	.reset       =	     qdisc_reset_queue,
 	.owner       =       THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("plug");
 
 static int __init plug_module_init(void)
 {
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index 8ecdd3ef6f..cc30f7a32f 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -418,6 +418,7 @@ static struct Qdisc_ops prio_qdisc_ops __read_mostly = {
 	.dump		=	prio_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("prio");
 
 static int __init prio_module_init(void)
 {
diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index 48a604c320..d584c0c258 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -1521,6 +1521,7 @@ static struct Qdisc_ops qfq_qdisc_ops __read_mostly = {
 	.destroy	= qfq_destroy_qdisc,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("qfq");
 
 static int __init qfq_init(void)
 {
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 607b6c8b3a..b5f096588f 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -548,6 +548,7 @@ static struct Qdisc_ops red_qdisc_ops __read_mostly = {
 	.dump_stats	=	red_dump_stats,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("red");
 
 static int __init red_module_init(void)
 {
diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c
index 1871a1c022..b717e15a3a 100644
--- a/net/sched/sch_sfb.c
+++ b/net/sched/sch_sfb.c
@@ -709,6 +709,7 @@ static struct Qdisc_ops sfb_qdisc_ops __read_mostly = {
 	.dump_stats	=	sfb_dump_stats,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("sfb");
 
 static int __init sfb_module_init(void)
 {
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index eb77558fa3..e66f4afb92 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -925,6 +925,7 @@ static struct Qdisc_ops sfq_qdisc_ops __read_mostly = {
 	.dump		=	sfq_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("sfq");
 
 static int __init sfq_module_init(void)
 {
diff --git a/net/sched/sch_skbprio.c b/net/sched/sch_skbprio.c
index 28beb11762..b4dd626c30 100644
--- a/net/sched/sch_skbprio.c
+++ b/net/sched/sch_skbprio.c
@@ -292,6 +292,7 @@ static struct Qdisc_ops skbprio_qdisc_ops __read_mostly = {
 	.destroy	=	skbprio_destroy,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("skbprio");
 
 static int __init skbprio_module_init(void)
 {
diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index ad99409c63..0b150b13be 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -40,6 +40,8 @@ static struct static_key_false taprio_have_working_mqprio;
 
 #define TXTIME_ASSIST_IS_ENABLED(flags) ((flags) & TCA_TAPRIO_ATTR_FLAG_TXTIME_ASSIST)
 #define FULL_OFFLOAD_IS_ENABLED(flags) ((flags) & TCA_TAPRIO_ATTR_FLAG_FULL_OFFLOAD)
+#define TAPRIO_SUPPORTED_FLAGS \
+	(TCA_TAPRIO_ATTR_FLAG_TXTIME_ASSIST | TCA_TAPRIO_ATTR_FLAG_FULL_OFFLOAD)
 #define TAPRIO_FLAGS_INVALID U32_MAX
 
 struct sched_entry {
@@ -408,19 +410,6 @@ static bool is_valid_interval(struct sk_buff *skb, struct Qdisc *sch)
 	return entry;
 }
 
-static bool taprio_flags_valid(u32 flags)
-{
-	/* Make sure no other flag bits are set. */
-	if (flags & ~(TCA_TAPRIO_ATTR_FLAG_TXTIME_ASSIST |
-		      TCA_TAPRIO_ATTR_FLAG_FULL_OFFLOAD))
-		return false;
-	/* txtime-assist and full offload are mutually exclusive */
-	if ((flags & TCA_TAPRIO_ATTR_FLAG_TXTIME_ASSIST) &&
-	    (flags & TCA_TAPRIO_ATTR_FLAG_FULL_OFFLOAD))
-		return false;
-	return true;
-}
-
 /* This returns the tstamp value set by TCP in terms of the set clock. */
 static ktime_t get_tcp_tstamp(struct taprio_sched *q, struct sk_buff *skb)
 {
@@ -1032,7 +1021,8 @@ static const struct nla_policy taprio_policy[TCA_TAPRIO_ATTR_MAX + 1] = {
 	[TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME]           =
 		NLA_POLICY_FULL_RANGE_SIGNED(NLA_S64, &taprio_cycle_time_range),
 	[TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME_EXTENSION] = { .type = NLA_S64 },
-	[TCA_TAPRIO_ATTR_FLAGS]                      = { .type = NLA_U32 },
+	[TCA_TAPRIO_ATTR_FLAGS]                      =
+		NLA_POLICY_MASK(NLA_U32, TAPRIO_SUPPORTED_FLAGS),
 	[TCA_TAPRIO_ATTR_TXTIME_DELAY]		     = { .type = NLA_U32 },
 	[TCA_TAPRIO_ATTR_TC_ENTRY]		     = { .type = NLA_NESTED },
 };
@@ -1161,11 +1151,6 @@ static int parse_taprio_schedule(struct taprio_sched *q, struct nlattr **tb,
 		list_for_each_entry(entry, &new->entries, list)
 			cycle = ktime_add_ns(cycle, entry->interval);
 
-		if (!cycle) {
-			NL_SET_ERR_MSG(extack, "'cycle_time' can never be 0");
-			return -EINVAL;
-		}
-
 		if (cycle < 0 || cycle > INT_MAX) {
 			NL_SET_ERR_MSG(extack, "'cycle_time' is too big");
 			return -EINVAL;
@@ -1174,6 +1159,11 @@ static int parse_taprio_schedule(struct taprio_sched *q, struct nlattr **tb,
 		new->cycle_time = cycle;
 	}
 
+	if (new->cycle_time < new->num_entries * length_to_duration(q, ETH_ZLEN)) {
+		NL_SET_ERR_MSG(extack, "'cycle_time' is too small");
+		return -EINVAL;
+	}
+
 	taprio_calculate_gate_durations(q, new);
 
 	return 0;
@@ -1186,16 +1176,13 @@ static int taprio_parse_mqprio_opt(struct net_device *dev,
 {
 	bool allow_overlapping_txqs = TXTIME_ASSIST_IS_ENABLED(taprio_flags);
 
-	if (!qopt && !dev->num_tc) {
-		NL_SET_ERR_MSG(extack, "'mqprio' configuration is necessary");
-		return -EINVAL;
-	}
-
-	/* If num_tc is already set, it means that the user already
-	 * configured the mqprio part
-	 */
-	if (dev->num_tc)
+	if (!qopt) {
+		if (!dev->num_tc) {
+			NL_SET_ERR_MSG(extack, "'mqprio' configuration is necessary");
+			return -EINVAL;
+		}
 		return 0;
+	}
 
 	/* taprio imposes that traffic classes map 1:n to tx queues */
 	if (qopt->num_tc > dev->num_tx_queues) {
@@ -1816,33 +1803,6 @@ static int taprio_mqprio_cmp(const struct net_device *dev,
 	return 0;
 }
 
-/* The semantics of the 'flags' argument in relation to 'change()'
- * requests, are interpreted following two rules (which are applied in
- * this order): (1) an omitted 'flags' argument is interpreted as
- * zero; (2) the 'flags' of a "running" taprio instance cannot be
- * changed.
- */
-static int taprio_new_flags(const struct nlattr *attr, u32 old,
-			    struct netlink_ext_ack *extack)
-{
-	u32 new = 0;
-
-	if (attr)
-		new = nla_get_u32(attr);
-
-	if (old != TAPRIO_FLAGS_INVALID && old != new) {
-		NL_SET_ERR_MSG_MOD(extack, "Changing 'flags' of a running schedule is not supported");
-		return -EOPNOTSUPP;
-	}
-
-	if (!taprio_flags_valid(new)) {
-		NL_SET_ERR_MSG_MOD(extack, "Specified 'flags' are not valid");
-		return -EINVAL;
-	}
-
-	return new;
-}
-
 static int taprio_change(struct Qdisc *sch, struct nlattr *opt,
 			 struct netlink_ext_ack *extack)
 {
@@ -1853,6 +1813,7 @@ static int taprio_change(struct Qdisc *sch, struct nlattr *opt,
 	struct net_device *dev = qdisc_dev(sch);
 	struct tc_mqprio_qopt *mqprio = NULL;
 	unsigned long flags;
+	u32 taprio_flags;
 	ktime_t start;
 	int i, err;
 
@@ -1864,12 +1825,31 @@ static int taprio_change(struct Qdisc *sch, struct nlattr *opt,
 	if (tb[TCA_TAPRIO_ATTR_PRIOMAP])
 		mqprio = nla_data(tb[TCA_TAPRIO_ATTR_PRIOMAP]);
 
-	err = taprio_new_flags(tb[TCA_TAPRIO_ATTR_FLAGS],
-			       q->flags, extack);
-	if (err < 0)
-		return err;
+	/* The semantics of the 'flags' argument in relation to 'change()'
+	 * requests, are interpreted following two rules (which are applied in
+	 * this order): (1) an omitted 'flags' argument is interpreted as
+	 * zero; (2) the 'flags' of a "running" taprio instance cannot be
+	 * changed.
+	 */
+	taprio_flags = tb[TCA_TAPRIO_ATTR_FLAGS] ? nla_get_u32(tb[TCA_TAPRIO_ATTR_FLAGS]) : 0;
 
-	q->flags = err;
+	/* txtime-assist and full offload are mutually exclusive */
+	if ((taprio_flags & TCA_TAPRIO_ATTR_FLAG_TXTIME_ASSIST) &&
+	    (taprio_flags & TCA_TAPRIO_ATTR_FLAG_FULL_OFFLOAD)) {
+		NL_SET_ERR_MSG_ATTR(extack, tb[TCA_TAPRIO_ATTR_FLAGS],
+				    "TXTIME_ASSIST and FULL_OFFLOAD are mutually exclusive");
+		return -EINVAL;
+	}
+
+	if (q->flags != TAPRIO_FLAGS_INVALID && q->flags != taprio_flags) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Changing 'flags' of a running schedule is not supported");
+		return -EOPNOTSUPP;
+	}
+	q->flags = taprio_flags;
+
+	/* Needed for length_to_duration() during netlink attribute parsing */
+	taprio_set_picos_per_byte(dev, q);
 
 	err = taprio_parse_mqprio_opt(dev, mqprio, extack, q->flags);
 	if (err < 0)
@@ -1930,7 +1910,6 @@ static int taprio_change(struct Qdisc *sch, struct nlattr *opt,
 	if (err < 0)
 		goto free_sched;
 
-	taprio_set_picos_per_byte(dev, q);
 	taprio_update_queue_max_sdu(q, new_admin, stab);
 
 	if (FULL_OFFLOAD_IS_ENABLED(q->flags))
@@ -2549,6 +2528,7 @@ static struct Qdisc_ops taprio_qdisc_ops __read_mostly = {
 	.dump_stats	= taprio_dump_stats,
 	.owner		= THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("taprio");
 
 static struct notifier_block taprio_device_notifier = {
 	.notifier_call = taprio_dev_notifier,
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index dd6b1a723b..f1d09183ae 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -608,6 +608,7 @@ static struct Qdisc_ops tbf_qdisc_ops __read_mostly = {
 	.dump		=	tbf_dump,
 	.owner		=	THIS_MODULE,
 };
+MODULE_ALIAS_NET_SCH("tbf");
 
 static int __init tbf_module_init(void)
 {