diff options
| author | Patrick McHardy <kaber@trash.net> | 2009-09-04 10:41:16 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-06 13:07:02 +0400 |
| commit | de6d5cdf881353f83006d5f3e28ac4fffd42145e (patch) | |
| tree | edc032e4d0a868578780facdd28fb0ee277aadc3 /net/sched/sch_red.c | |
| parent | 71ebe5e91947392bc276af713827eab12b6db8e4 (diff) | |
| download | linux-de6d5cdf881353f83006d5f3e28ac4fffd42145e.tar.xz | |
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_red.c')
| -rw-r--r-- | net/sched/sch_red.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index c27b8023f079..a2c4d1aa3cb1 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -308,17 +308,6 @@ static void red_put(struct Qdisc *sch, unsigned long arg) return; } -static int red_change_class(struct Qdisc *sch, u32 classid, u32 parentid, - struct nlattr **tca, unsigned long *arg) -{ - return -ENOSYS; -} - -static int red_delete(struct Qdisc *sch, unsigned long cl) -{ - return -ENOSYS; -} - static void red_walk(struct Qdisc *sch, struct qdisc_walker *walker) { if (!walker->stop) { @@ -336,8 +325,6 @@ static const struct Qdisc_class_ops red_class_ops = { .leaf = red_leaf, .get = red_get, .put = red_put, - .change = red_change_class, - .delete = red_delete, .walk = red_walk, .dump = red_dump_class, }; |