Merge branch 'net-sched-load-modules-via-alias'

Michal Koutný says:

====================
net/sched: Load modules via alias

These modules may be loaded lazily without user's awareness and
control. Add respective aliases to modules and request them under these
aliases so that modprobe's blacklisting mechanism (through aliases)
works for them. (The same pattern exists e.g. for filesystem
modules.)

For example (before the change):
  $ tc filter add dev lo parent 10: protocol ip prio 10 handle 1: cgroup
  # cls_cgroup module is loaded despite a `blacklist cls_cgroup` entry
  # in /etc/modprobe.d/*.conf

After the change:
  $ tc filter add dev lo parent 10: protocol ip prio 10 handle 1: cgroup
  Error: TC classifier not found.
  We have an error talking to the kernel
  # explicit/acknowledged (privileged) action is needed
  $ modprobe cls_cgroup
  # blacklist entry won't apply to this direct modprobe, module is
  # loaded with awareness

A considered alternative was invoking `modprobe -b` always from
request_module(), however, dismissed as too intrusive and slightly
confusing in favor of the precedented aliases (the commit 7f78e035
("fs: Limit sys_mount to only request filesystem modules.").

User experience suffers in both alternatives. Its improvement is
orthogonal to blacklist honoring.

v1: https://lore.kernel.org/r/20231121175640.9981-1-mkoutny@suse.com
v2 https://lore.kernel.org/r/20231206192752.18989-1-mkoutny@suse.com
v3 https://lore.kernel.org/r/20240112180646.13232-1-mkoutny@suse.com
v4 https://lore.kernel.org/r/20240123135242.11430-1-mkoutny@suse.comAcked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
====================

Link: https://lore.kernel.org/r/20240201130943.19536-1-mkoutny@suse.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

include/net/act_api.h

@@ -201,6 +201,8 @@ int tcf_idr_release(struct tc_action *a, bool bind);
 int tcf_register_action(struct tc_action_ops *a, struct pernet_operations *ops);
 int tcf_unregister_action(struct tc_action_ops *a,
 			  struct pernet_operations *ops);
+#define NET_ACT_ALIAS_PREFIX "net-act-"
+#define MODULE_ALIAS_NET_ACT(kind)	MODULE_ALIAS(NET_ACT_ALIAS_PREFIX kind)
 int tcf_action_destroy(struct tc_action *actions[], int bind);
 int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions,
 		    int nr_actions, struct tcf_result *res);

include/net/pkt_cls.h

@@ -24,6 +24,8 @@ struct tcf_walker {
 
 int register_tcf_proto_ops(struct tcf_proto_ops *ops);
 void unregister_tcf_proto_ops(struct tcf_proto_ops *ops);
+#define NET_CLS_ALIAS_PREFIX "net-cls-"
+#define MODULE_ALIAS_NET_CLS(kind)	MODULE_ALIAS(NET_CLS_ALIAS_PREFIX kind)
 
 struct tcf_block_ext_info {
 	enum flow_block_binder_type binder_type;

include/net/pkt_sched.h

@@ -100,6 +100,8 @@ struct Qdisc *fifo_create_dflt(struct Qdisc *sch, struct Qdisc_ops *ops,
 
 int register_qdisc(struct Qdisc_ops *qops);
 void unregister_qdisc(struct Qdisc_ops *qops);
+#define NET_SCH_ALIAS_PREFIX "net-sch-"
+#define MODULE_ALIAS_NET_SCH(id)	MODULE_ALIAS(NET_SCH_ALIAS_PREFIX id)
 void qdisc_get_default(char *id, size_t len);
 int qdisc_set_default(const char *id);
 

net/sched/act_api.c

@@ -1363,7 +1363,7 @@ 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();
 

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)
 {

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)
 {

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)
 {

net/sched/act_ct.c

@@ -1600,6 +1600,7 @@ 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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

net/sched/act_mirred.c

@@ -643,6 +643,7 @@ 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)
 {

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)
 {

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)
 {

net/sched/act_pedit.c

@@ -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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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);

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)
 {

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)
 {

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)
 {

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)
 {

net/sched/cls_flower.c

@@ -3656,6 +3656,7 @@ 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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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) {

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)
 {

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,

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)
 {

net/sched/sch_codel.c

@@ -287,6 +287,7 @@ 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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)

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)
 {

net/sched/sch_htb.c

@@ -2166,6 +2166,7 @@ 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)
 {

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");

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)
 {

net/sched/sch_multiq.c

@@ -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)
 {

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)

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

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)
 {

net/sched/sch_taprio.c

@@ -2528,6 +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,

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)
 {