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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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9
net/sched/sch_cbq.c
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@@ -1401,7 +1401,8 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt)
q->link.sibling = &q->link;
q->link.common.classid = sch->handle;
q->link.qdisc = sch;
if (!(q->link.q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops,
if (!(q->link.q = qdisc_create_dflt(sch->dev, sch->dev_queue,
&pfifo_qdisc_ops,
sch->handle)))
q->link.q = &noop_qdisc;
@@ -1645,7 +1646,8 @@ static int cbq_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
if (cl) {
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);
if (new == NULL)
return -ENOBUFS;
@@ -1877,7 +1879,8 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
cl->R_tab = rtab;
rtab = NULL;
cl->refcnt = 1;
if (!(cl->q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid)))
if (!(cl->q = qdisc_create_dflt(sch->dev, sch->dev_queue,
&pfifo_qdisc_ops, classid)))
cl->q = &noop_qdisc;
cl->common.classid = classid;
cl->tparent = parent;