sch_generic.c (112d6212c80a1c560757520bd822a41c0ad15c2c) sch_generic.c (ab92d68fc22f9afab480153bd82a20f6e2533769)
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * net/sched/sch_generic.c Generic packet scheduler routines.
4 *
5 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
6 * Jamal Hadi Salim, <hadi@cyberus.ca> 990601
7 * - Ingress support
8 */

--- 785 unchanged lines hidden (view full) ---

794 .reset = pfifo_fast_reset,
795 .dump = pfifo_fast_dump,
796 .change_tx_queue_len = pfifo_fast_change_tx_queue_len,
797 .owner = THIS_MODULE,
798 .static_flags = TCQ_F_NOLOCK | TCQ_F_CPUSTATS,
799};
800EXPORT_SYMBOL(pfifo_fast_ops);
801
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * net/sched/sch_generic.c Generic packet scheduler routines.
4 *
5 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
6 * Jamal Hadi Salim, <hadi@cyberus.ca> 990601
7 * - Ingress support
8 */

--- 785 unchanged lines hidden (view full) ---

794 .reset = pfifo_fast_reset,
795 .dump = pfifo_fast_dump,
796 .change_tx_queue_len = pfifo_fast_change_tx_queue_len,
797 .owner = THIS_MODULE,
798 .static_flags = TCQ_F_NOLOCK | TCQ_F_CPUSTATS,
799};
800EXPORT_SYMBOL(pfifo_fast_ops);
801
802static struct lock_class_key qdisc_tx_busylock;
803static struct lock_class_key qdisc_running_key;
804
805struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
806 const struct Qdisc_ops *ops,
807 struct netlink_ext_ack *extack)
808{
809 void *p;
810 struct Qdisc *sch;
811 unsigned int size = QDISC_ALIGN(sizeof(*sch)) + ops->priv_size;
812 int err = -ENOBUFS;

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849 sch->cpu_qstats = alloc_percpu(struct gnet_stats_queue);
850 if (!sch->cpu_qstats) {
851 free_percpu(sch->cpu_bstats);
852 goto errout1;
853 }
854 }
855
856 spin_lock_init(&sch->busylock);
802struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
803 const struct Qdisc_ops *ops,
804 struct netlink_ext_ack *extack)
805{
806 void *p;
807 struct Qdisc *sch;
808 unsigned int size = QDISC_ALIGN(sizeof(*sch)) + ops->priv_size;
809 int err = -ENOBUFS;

--- 36 unchanged lines hidden (view full) ---

846 sch->cpu_qstats = alloc_percpu(struct gnet_stats_queue);
847 if (!sch->cpu_qstats) {
848 free_percpu(sch->cpu_bstats);
849 goto errout1;
850 }
851 }
852
853 spin_lock_init(&sch->busylock);
857 lockdep_set_class(&sch->busylock,
858 dev->qdisc_tx_busylock ?: &qdisc_tx_busylock);
859
860 /* seqlock has the same scope of busylock, for NOLOCK qdisc */
861 spin_lock_init(&sch->seqlock);
854 /* seqlock has the same scope of busylock, for NOLOCK qdisc */
855 spin_lock_init(&sch->seqlock);
862 lockdep_set_class(&sch->busylock,
863 dev->qdisc_tx_busylock ?: &qdisc_tx_busylock);
864
865 seqcount_init(&sch->running);
856 seqcount_init(&sch->running);
866 lockdep_set_class(&sch->running,
867 dev->qdisc_running_key ?: &qdisc_running_key);
868
869 sch->ops = ops;
870 sch->flags = ops->static_flags;
871 sch->enqueue = ops->enqueue;
872 sch->dequeue = ops->dequeue;
873 sch->dev_queue = dev_queue;
874 sch->empty = true;
875 dev_hold(dev);
876 refcount_set(&sch->refcnt, 1);
877
857
858 sch->ops = ops;
859 sch->flags = ops->static_flags;
860 sch->enqueue = ops->enqueue;
861 sch->dequeue = ops->dequeue;
862 sch->dev_queue = dev_queue;
863 sch->empty = true;
864 dev_hold(dev);
865 refcount_set(&sch->refcnt, 1);
866
867 if (sch != &noop_qdisc) {
868 lockdep_set_class(&sch->busylock, &dev->qdisc_tx_busylock_key);
869 lockdep_set_class(&sch->seqlock, &dev->qdisc_tx_busylock_key);
870 lockdep_set_class(&sch->running, &dev->qdisc_running_key);
871 }
872
878 return sch;
879errout1:
880 kfree(p);
881errout:
882 return ERR_PTR(err);
883}
884
885struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue,

--- 521 unchanged lines hidden --- 		873 return sch;
874errout1:
875 kfree(p);
876errout:
877 return ERR_PTR(err);
878}
879
880struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue,

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