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netdev: Create netdev_queue abstraction.

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A netdev_queue is an entity managed by a qdisc.

Currently there is one RX and one TX queue, and a netdev_queue merely
contains a backpointer to the net_device.

The Qdisc struct is augmented with a netdev_queue pointer as well.

Eventually the 'dev' Qdisc member will go away and we will have the
resulting hierarchy:

	net_device --> netdev_queue --> Qdisc

Also, qdisc_alloc() and qdisc_create_dflt() now take a netdev_queue
pointer argument.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2008-07-08 16:55:56 -07:00
parent e65d22e180
commit bb949fbd18
14 changed files with 74 additions and 29 deletions
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11
net/sched/sch_htb.c
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@ -1129,7 +1129,8 @@ static int htb_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
if (cl && !cl->level) {
if (new == NULL &&
(new = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops,
(new = qdisc_create_dflt(sch->dev, sch->dev_queue,
&pfifo_qdisc_ops,
cl->common.classid))
== NULL)
return -ENOBUFS;
@ -1256,8 +1257,9 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg)
return -EBUSY;
if (!cl->level && htb_parent_last_child(cl)) {
new_q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops,
cl->parent->common.classid);
new_q = qdisc_create_dflt(sch->dev, sch->dev_queue,
&pfifo_qdisc_ops,
cl->parent->common.classid);
last_child = 1;
}
@ -1376,7 +1378,8 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
/* create leaf qdisc early because it uses kmalloc(GFP_KERNEL)
so that can't be used inside of sch_tree_lock
-- thanks to Karlis Peisenieks */
new_q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid);
new_q = qdisc_create_dflt(sch->dev, sch->dev_queue,
&pfifo_qdisc_ops, classid);
sch_tree_lock(sch);
if (parent && !parent->level) {
unsigned int qlen = parent->un.leaf.q->q.qlen;