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pkt_sched: Fix sch_sfq vs tc_modify_qdisc oops

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sch_sfq as a classful qdisc needs the .leaf handler. Otherwise, there
is an oops possible in tc_modify_qdisc()/check_loop().

Fixes commit 7d2681a6ff

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jarek Poplawski 2010-08-10 22:31:02 +00:00 committed by David S. Miller
parent 98a21ef0ab
commit 41065fba84
1 changed files with 6 additions and 0 deletions
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6
net/sched/sch_sfq.c
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@ -508,6 +508,11 @@ nla_put_failure:
return -1;
}
static struct Qdisc *sfq_leaf(struct Qdisc *sch, unsigned long arg)
{
return NULL;
}
static unsigned long sfq_get(struct Qdisc *sch, u32 classid)
{
return 0;
@ -575,6 +580,7 @@ static void sfq_walk(struct Qdisc *sch, struct qdisc_walker *arg)
}
static const struct Qdisc_class_ops sfq_class_ops = {
.leaf = sfq_leaf,
.get = sfq_get,
.put = sfq_put,
.tcf_chain = sfq_find_tcf,