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net: Define accessors to manipulate QDISC_STATE_RUNNING

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Define three helpers to manipulate QDISC_STATE_RUNNIG flag, that a
second patch will move on another location.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-06-02 03:23:51 -07:00 • committed by David S. Miller
commit bc135b23d0
4 changed files with 20 additions and 5 deletions
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2
include/net/pkt_sched.h
View file

@ -95,7 +95,7 @@ extern void __qdisc_run(struct Qdisc *q);
static inline void qdisc_run(struct Qdisc *q)
{
if (!test_and_set_bit(__QDISC_STATE_RUNNING, &q->state))
if (qdisc_run_begin(q))
__qdisc_run(q);
}

15
include/net/sch_generic.h
View file

@ -76,6 +76,21 @@ struct Qdisc {
struct rcu_head rcu_head;
};
static inline bool qdisc_is_running(struct Qdisc *qdisc)
{
return test_bit(__QDISC_STATE_RUNNING, &qdisc->state);
}
static inline bool qdisc_run_begin(struct Qdisc *qdisc)
{
return !test_and_set_bit(__QDISC_STATE_RUNNING, &qdisc->state);
}
static inline void qdisc_run_end(struct Qdisc *qdisc)
{
clear_bit(__QDISC_STATE_RUNNING, &qdisc->state);
}
struct Qdisc_class_ops {
/* Child qdisc manipulation */
struct netdev_queue * (*select_queue)(struct Qdisc *, struct tcmsg *);