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authorPatrick McHardy <kaber@trash.net>2009-09-04 06:41:16 +0000
committerDavid S. Miller <davem@davemloft.net>2009-09-06 02:07:02 -0700
commitde6d5cdf881353f83006d5f3e28ac4fffd42145e (patch)
treeedc032e4d0a868578780facdd28fb0ee277aadc3 /net/sched/sch_cbq.c
parent71ebe5e91947392bc276af713827eab12b6db8e4 (diff)
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_cbq.c')
0 files changed, 0 insertions, 0 deletions