From 3e692f21532a54eeb5e6fc0ccc214cfa56fe23d3 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Thu, 27 Aug 2015 21:21:39 +0200 Subject: net: sched: simplify attach_one_default_qdisc() Now that noqueue qdisc can be attached just like any other qdisc, no special treatment is necessary anymore when attaching it as default qdisc. This change has the added benefit that 'tc qdisc show' prints noqueue instead of nothing for devices defaulting to noqueue. Signed-off-by: Phil Sutter Signed-off-by: David S. Miller --- net/sched/sch_generic.c | 41 ++++++++++++----------------------------- 1 file changed, 12 insertions(+), 29 deletions(-) diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index d5c7c0d88786..cb5d4ad32946 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -435,24 +435,6 @@ struct Qdisc_ops noqueue_qdisc_ops __read_mostly = { .owner = THIS_MODULE, }; -static struct Qdisc noqueue_qdisc; -static struct netdev_queue noqueue_netdev_queue = { - .qdisc = &noqueue_qdisc, - .qdisc_sleeping = &noqueue_qdisc, -}; - -static struct Qdisc noqueue_qdisc = { - .enqueue = NULL, - .dequeue = noop_dequeue, - .flags = TCQ_F_BUILTIN, - .ops = &noqueue_qdisc_ops, - .list = LIST_HEAD_INIT(noqueue_qdisc.list), - .q.lock = __SPIN_LOCK_UNLOCKED(noqueue_qdisc.q.lock), - .dev_queue = &noqueue_netdev_queue, - .busylock = __SPIN_LOCK_UNLOCKED(noqueue_qdisc.busylock), -}; - - static const u8 prio2band[TC_PRIO_MAX + 1] = { 1, 2, 2, 2, 1, 2, 0, 0 , 1, 1, 1, 1, 1, 1, 1, 1 }; @@ -743,18 +725,19 @@ static void attach_one_default_qdisc(struct net_device *dev, struct netdev_queue *dev_queue, void *_unused) { - struct Qdisc *qdisc = &noqueue_qdisc; + struct Qdisc *qdisc; + const struct Qdisc_ops *ops = default_qdisc_ops; - if (!(dev->priv_flags & IFF_NO_QUEUE)) { - qdisc = qdisc_create_dflt(dev_queue, - default_qdisc_ops, TC_H_ROOT); - if (!qdisc) { - netdev_info(dev, "activation failed\n"); - return; - } - if (!netif_is_multiqueue(dev)) - qdisc->flags |= TCQ_F_ONETXQUEUE; + if (dev->priv_flags & IFF_NO_QUEUE) + ops = &noqueue_qdisc_ops; + + qdisc = qdisc_create_dflt(dev_queue, ops, TC_H_ROOT); + if (!qdisc) { + netdev_info(dev, "activation failed\n"); + return; } + if (!netif_is_multiqueue(dev)) + qdisc->flags |= TCQ_F_ONETXQUEUE; dev_queue->qdisc_sleeping = qdisc; } @@ -790,7 +773,7 @@ static void transition_one_qdisc(struct net_device *dev, clear_bit(__QDISC_STATE_DEACTIVATED, &new_qdisc->state); rcu_assign_pointer(dev_queue->qdisc, new_qdisc); - if (need_watchdog_p && new_qdisc != &noqueue_qdisc) { + if (need_watchdog_p) { dev_queue->trans_start = 0; *need_watchdog_p = 1; } -- cgit v1.2.3-59-g8ed1b