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| author | Alex Shi <alex.shi@linaro.org> | 2016-07-17 12:16:24 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-07-17 12:16:24 +0800 |
| commit | fe4c808f845e2ff3a3fb6c66009ab69c8d01bf57 (patch) | |
| tree | 82ce8b6476c1c4c84ab05a49c94317f1ce8ac1b7 /include/net/sch_generic.h | |
| parent | bbe8f0ee88a1eb4bb1e72e593b008faf387f30ac (diff) | |
| parent | 0ac0a856d986c1ab240753479f5e50fdfab82b14 (diff) | |
Merge tag 'v3.18.37' into linux-linaro-lsk-v3.18lsk-v3.18-16.07
This is the 3.18.37 stable release
Diffstat (limited to 'include/net/sch_generic.h')
| -rw-r--r-- | include/net/sch_generic.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 5ccfe161f359..f10b01467f07 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -393,7 +393,8 @@ struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue, struct Qdisc *qdisc); void qdisc_reset(struct Qdisc *qdisc); void qdisc_destroy(struct Qdisc *qdisc); -void qdisc_tree_decrease_qlen(struct Qdisc *qdisc, unsigned int n); +void qdisc_tree_reduce_backlog(struct Qdisc *qdisc, unsigned int n, + unsigned int len); struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue, const struct Qdisc_ops *ops); struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue, @@ -689,6 +690,23 @@ static inline void qdisc_reset_queue(struct Qdisc *sch) sch->qstats.backlog = 0; } +static inline struct Qdisc *qdisc_replace(struct Qdisc *sch, struct Qdisc *new, + struct Qdisc **pold) +{ + struct Qdisc *old; + + sch_tree_lock(sch); + old = *pold; + *pold = new; + if (old != NULL) { + qdisc_tree_reduce_backlog(old, old->q.qlen, old->qstats.backlog); + qdisc_reset(old); + } + sch_tree_unlock(sch); + + return old; +} + static inline unsigned int __qdisc_queue_drop(struct Qdisc *sch, struct sk_buff_head *list) { |