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| author | Patrick McHardy <kaber@trash.net> | 2009-09-04 06:41:17 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-06 02:07:02 -0700 |
| commit | 5b9a9ccfad8553dbf7a9b17ba78bad70215ed0e2 (patch) | |
| tree | 1454e8121fef6635a615f6766b3fdbff678ae63d /net/sched/sch_cbq.c | |
| parent | de6d5cdf881353f83006d5f3e28ac4fffd42145e (diff) | |
| download | linux-5b9a9ccfad8553dbf7a9b17ba78bad70215ed0e2.tar.gz linux-5b9a9ccfad8553dbf7a9b17ba78bad70215ed0e2.tar.bz2 linux-5b9a9ccfad8553dbf7a9b17ba78bad70215ed0e2.zip | |
net_sched: remove some unnecessary checks in classful schedulers
The class argument to the ->graft(), ->leaf(), ->dump(), ->dump_stats() all
originate from either ->get() or ->walk() and are always valid.
Remove unnecessary checks.
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')
| -rw-r--r-- | net/sched/sch_cbq.c | 38 |
1 files changed, 17 insertions, 21 deletions
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index d5798e17a832..5b132c473264 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -1621,29 +1621,25 @@ static int cbq_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new, { struct cbq_class *cl = (struct cbq_class*)arg; - if (cl) { - if (new == NULL) { - new = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue, - &pfifo_qdisc_ops, - cl->common.classid); - if (new == NULL) - return -ENOBUFS; - } else { + if (new == NULL) { + new = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue, + &pfifo_qdisc_ops, cl->common.classid); + if (new == NULL) + return -ENOBUFS; + } else { #ifdef CONFIG_NET_CLS_ACT - if (cl->police == TC_POLICE_RECLASSIFY) - new->reshape_fail = cbq_reshape_fail; + if (cl->police == TC_POLICE_RECLASSIFY) + new->reshape_fail = cbq_reshape_fail; #endif - } - sch_tree_lock(sch); - *old = cl->q; - cl->q = new; - qdisc_tree_decrease_qlen(*old, (*old)->q.qlen); - qdisc_reset(*old); - sch_tree_unlock(sch); - - return 0; } - return -ENOENT; + sch_tree_lock(sch); + *old = cl->q; + cl->q = new; + qdisc_tree_decrease_qlen(*old, (*old)->q.qlen); + qdisc_reset(*old); + sch_tree_unlock(sch); + + return 0; } static struct Qdisc * @@ -1651,7 +1647,7 @@ cbq_leaf(struct Qdisc *sch, unsigned long arg) { struct cbq_class *cl = (struct cbq_class*)arg; - return cl ? cl->q : NULL; + return cl->q; } static void cbq_qlen_notify(struct Qdisc *sch, unsigned long arg) |