netdev: Create netdev_queue abstraction.

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>

1 files changed, 6 insertions, 3 deletions

diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 3a8267246a4f..5a22fec4eadd 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1083,7 +1083,8 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
         cl->refcnt    = 1;
         cl->sched     = q;
         cl->cl_parent = parent;
-        cl->qdisc = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid);
+        cl->qdisc = qdisc_create_dflt(sch->dev, sch->dev_queue,
+                                      &pfifo_qdisc_ops, classid);
         if (cl->qdisc == NULL)
                 cl->qdisc = &noop_qdisc;
         INIT_LIST_HEAD(&cl->children);
@@ -1201,7 +1202,8 @@ hfsc_graft_class(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
         if (cl->level > 0)
                 return -EINVAL;
         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->cl_common.classid);
                 if (new == NULL)
                         new = &noop_qdisc;
@@ -1443,7 +1445,8 @@ hfsc_init_qdisc(struct Qdisc *sch, struct nlattr *opt)
         q->root.cl_common.classid = sch->handle;
         q->root.refcnt  = 1;
         q->root.sched   = q;
-        q->root.qdisc = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops,
+        q->root.qdisc = qdisc_create_dflt(sch->dev, sch->dev_queue,
+                                          &pfifo_qdisc_ops,
                                           sch->handle);
         if (q->root.qdisc == NULL)
                 q->root.qdisc = &noop_qdisc;