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| author | Patrick McHardy <kaber@trash.net> | 2009-09-04 08:41:16 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-06 11:07:02 +0200 |
| commit | de6d5cdf881353f83006d5f3e28ac4fffd42145e (patch) | |
| tree | edc032e4d0a868578780facdd28fb0ee277aadc3 /net/sched/sch_generic.c | |
| parent | net_sched: make cls_ops->tcf_chain() optional (diff) | |
| download | linux-de6d5cdf881353f83006d5f3e28ac4fffd42145e.tar.xz linux-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_generic.c')
0 files changed, 0 insertions, 0 deletions