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net: sch: api: add extack support in qdisc_create_dflt

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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>
This commit is contained in:
Alexander Aring
2017-12-20 12:35:21 -05:00
committed by David S. Miller
parent d0bd684ddd
commit a38a98821c
18 changed files with 56 additions and 40 deletions
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5
net/sched/sch_dsmark.c
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@@ -71,7 +71,7 @@ static int dsmark_graft(struct Qdisc *sch, unsigned long arg,
if (new == NULL) {
new = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops,
sch->handle);
sch->handle, NULL);
if (new == NULL)
new = &noop_qdisc;
}
@@ -381,7 +381,8 @@ static int dsmark_init(struct Qdisc *sch, struct nlattr *opt,
p->default_index = default_index;
p->set_tc_index = nla_get_flag(tb[TCA_DSMARK_SET_TC_INDEX]);
p->q = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, sch->handle);
p->q = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, sch->handle,
NULL);
if (p->q == NULL)
p->q = &noop_qdisc;
else