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>
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

View File

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