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net/sched: add net device refcount tracker to struct Qdisc

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Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2021-12-04 20:22:13 -08:00 committed by Jakub Kicinski
parent c04438f58d
commit 606509f27f
2 changed files with 3 additions and 3 deletions
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2
include/net/sch_generic.h
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@ -125,7 +125,7 @@ struct Qdisc {
spinlock_t seqlock;
struct rcu_head rcu;
netdevice_tracker dev_tracker;
/* private data */
long privdata[] ____cacheline_aligned;
};

4
net/sched/sch_generic.c
View file

@ -973,7 +973,7 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
sch->enqueue = ops->enqueue;
sch->dequeue = ops->dequeue;
sch->dev_queue = dev_queue;
dev_hold(dev);
dev_hold_track(dev, &sch->dev_tracker, GFP_KERNEL);
refcount_set(&sch->refcnt, 1);
return sch;
@ -1073,7 +1073,7 @@ static void qdisc_destroy(struct Qdisc *qdisc)
ops->destroy(qdisc);
module_put(ops->owner);
dev_put(qdisc_dev(qdisc));
dev_put_track(qdisc_dev(qdisc), &qdisc->dev_tracker);
trace_qdisc_destroy(qdisc);