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, 4 insertions, 2 deletions

diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index db0e23ae85f8..3dddab531d5a 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -296,7 +296,8 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
                 goto err_out;
         }
         flow->filter_list = NULL;
-        flow->q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid);
+        flow->q = qdisc_create_dflt(sch->dev, sch->dev_queue,
+                                    &pfifo_qdisc_ops, classid);
         if (!flow->q)
                 flow->q = &noop_qdisc;
         pr_debug("atm_tc_change: qdisc %p\n", flow->q);
@@ -555,7 +556,8 @@ static int atm_tc_init(struct Qdisc *sch, struct nlattr *opt)
 
         pr_debug("atm_tc_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt);
         p->flows = &p->link;
-        p->link.q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, sch->handle);
+        p->link.q = qdisc_create_dflt(sch->dev, sch->dev_queue,
+                                      &pfifo_qdisc_ops, sch->handle);
         if (!p->link.q)
                 p->link.q = &noop_qdisc;
         pr_debug("atm_tc_init: link (%p) qdisc %p\n", &p->link, p->link.q);