net: sch: api: add extack support in qdisc_create_dflt
This patch adds extack support for the function qdisc_create_dflt which is a common used function in the tc subsystem. Callers which are interested in the receiving error can assign extack to get a more detailed information why qdisc_create_dflt failed. The function qdisc_create_dflt will also call an init callback which can fail by any per-qdisc specific handling. Cc: David Ahern <dsahern@gmail.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Alexander Aring <aring@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller

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d0bd684ddd
commit
a38a98821c
@@ -230,7 +230,7 @@ static int mqprio_init(struct Qdisc *sch, struct nlattr *opt,
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qdisc = qdisc_create_dflt(dev_queue,
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get_default_qdisc_ops(dev, i),
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TC_H_MAKE(TC_H_MAJ(sch->handle),
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TC_H_MIN(i + 1)));
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TC_H_MIN(i + 1)), extack);
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if (!qdisc)
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return -ENOMEM;
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