net/sched: sch_clsact: Only create under TC_H_CLSACT
clsact Qdiscs are only supposed to be created under TC_H_CLSACT (which
equals TC_H_INGRESS). Return -EOPNOTSUPP if 'parent' is not
TC_H_CLSACT.
Fixes: 1f211a1b92
("net, sched: add clsact qdisc")
Tested-by: Pedro Tammela <pctammela@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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@ -225,6 +225,9 @@ static int clsact_init(struct Qdisc *sch, struct nlattr *opt,
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struct net_device *dev = qdisc_dev(sch);
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struct net_device *dev = qdisc_dev(sch);
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int err;
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int err;
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if (sch->parent != TC_H_CLSACT)
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return -EOPNOTSUPP;
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net_inc_ingress_queue();
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net_inc_ingress_queue();
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net_inc_egress_queue();
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net_inc_egress_queue();
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@ -254,6 +257,9 @@ static void clsact_destroy(struct Qdisc *sch)
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{
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{
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struct clsact_sched_data *q = qdisc_priv(sch);
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struct clsact_sched_data *q = qdisc_priv(sch);
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if (sch->parent != TC_H_CLSACT)
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return;
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tcf_block_put_ext(q->egress_block, sch, &q->egress_block_info);
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tcf_block_put_ext(q->egress_block, sch, &q->egress_block_info);
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tcf_block_put_ext(q->ingress_block, sch, &q->ingress_block_info);
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tcf_block_put_ext(q->ingress_block, sch, &q->ingress_block_info);
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