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, 7 insertions, 4 deletions

diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index ee8b4ffe110c..956a67f66b9c 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -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;