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| author | Patrick McHardy <kaber@trash.net> | 2009-09-04 06:41:16 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-06 02:07:02 -0700 |
| commit | de6d5cdf881353f83006d5f3e28ac4fffd42145e (patch) | |
| tree | edc032e4d0a868578780facdd28fb0ee277aadc3 /net/sched/sch_ingress.c | |
| parent | 71ebe5e91947392bc276af713827eab12b6db8e4 (diff) | |
| download | linux-stable-de6d5cdf881353f83006d5f3e28ac4fffd42145e.tar.gz linux-stable-de6d5cdf881353f83006d5f3e28ac4fffd42145e.tar.bz2 linux-stable-de6d5cdf881353f83006d5f3e28ac4fffd42145e.zip | |
net_sched: make cls_ops->change and cls_ops->delete optional
Some schedulers don't support creating, changing or deleting classes.
Make the respective callbacks optionally and consistently return
-EOPNOTSUPP for unsupported operations, instead of currently either
-EOPNOTSUPP, -ENOSYS or no error.
In case of sch_prio and sch_multiq, the removed operations additionally
checked for an invalid class. This is not necessary since the class
argument can only orginate from ->get() or in case of ->change is 0
for creation of new classes, in which case ->change() incorrectly
returned -ENOENT.
As a side-effect, this patch fixes a possible (root-only) NULL pointer
function call in sch_ingress, which didn't implement a so far mandatory
->delete() operation.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_ingress.c')
| -rw-r--r-- | net/sched/sch_ingress.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c index ace7902b5097..a9e646bdb605 100644 --- a/net/sched/sch_ingress.c +++ b/net/sched/sch_ingress.c @@ -42,12 +42,6 @@ static void ingress_put(struct Qdisc *sch, unsigned long cl) { } -static int ingress_change(struct Qdisc *sch, u32 classid, u32 parent, - struct nlattr **tca, unsigned long *arg) -{ - return 0; -} - static void ingress_walk(struct Qdisc *sch, struct qdisc_walker *walker) { return; @@ -120,7 +114,6 @@ static const struct Qdisc_class_ops ingress_class_ops = { .leaf = ingress_leaf, .get = ingress_get, .put = ingress_put, - .change = ingress_change, .walk = ingress_walk, .tcf_chain = ingress_find_tcf, .bind_tcf = ingress_bind_filter, |