diff options
| -rw-r--r-- | include/net/gen_stats.h | 1 | ||||
| -rw-r--r-- | net/core/gen_estimator.c | 30 | ||||
| -rw-r--r-- | net/sched/act_police.c | 6 |
3 files changed, 34 insertions, 3 deletions
diff --git a/include/net/gen_stats.h b/include/net/gen_stats.h index 8cd8185fa2ed..dcf5bfa7d4f1 100644 --- a/include/net/gen_stats.h +++ b/include/net/gen_stats.h @@ -45,5 +45,6 @@ extern void gen_kill_estimator(struct gnet_stats_basic *bstats, extern int gen_replace_estimator(struct gnet_stats_basic *bstats, struct gnet_stats_rate_est *rate_est, spinlock_t *stats_lock, struct nlattr *opt); +extern int gen_estimator_active(const struct gnet_stats_rate_est *rate_est); #endif diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c index 80aa160877e9..3885550f0187 100644 --- a/net/core/gen_estimator.c +++ b/net/core/gen_estimator.c @@ -242,6 +242,7 @@ int gen_new_estimator(struct gnet_stats_basic *bstats, return 0; } +EXPORT_SYMBOL(gen_new_estimator); static void __gen_kill_estimator(struct rcu_head *head) { @@ -275,6 +276,7 @@ void gen_kill_estimator(struct gnet_stats_basic *bstats, call_rcu(&e->e_rcu, __gen_kill_estimator); } } +EXPORT_SYMBOL(gen_kill_estimator); /** * gen_replace_estimator - replace rate estimator configuration @@ -295,8 +297,30 @@ int gen_replace_estimator(struct gnet_stats_basic *bstats, gen_kill_estimator(bstats, rate_est); return gen_new_estimator(bstats, rate_est, stats_lock, opt); } +EXPORT_SYMBOL(gen_replace_estimator); + +/** + * gen_estimator_active - test if estimator is currently in use + * @rate_est: rate estimator statistics + * + * Returns 1 if estimator is active, and 0 if not. + */ +int gen_estimator_active(const struct gnet_stats_rate_est *rate_est) +{ + int idx; + struct gen_estimator *e; + ASSERT_RTNL(); -EXPORT_SYMBOL(gen_kill_estimator); -EXPORT_SYMBOL(gen_new_estimator); -EXPORT_SYMBOL(gen_replace_estimator); + for (idx=0; idx <= EST_MAX_INTERVAL; idx++) { + if (!elist[idx].timer.function) + continue; + + list_for_each_entry(e, &elist[idx].list, list) { + if (e->rate_est == rate_est) + return 1; + } + } + return 0; +} +EXPORT_SYMBOL(gen_estimator_active); diff --git a/net/sched/act_police.c b/net/sched/act_police.c index e19a0261144a..c39f60cea6ee 100644 --- a/net/sched/act_police.c +++ b/net/sched/act_police.c @@ -182,6 +182,12 @@ override: R_tab = qdisc_get_rtab(&parm->rate, tb[TCA_POLICE_RATE]); if (R_tab == NULL) goto failure; + + if (!est && !gen_estimator_active(&police->tcf_rate_est)) { + err = -EINVAL; + goto failure; + } + if (parm->peakrate.rate) { P_tab = qdisc_get_rtab(&parm->peakrate, tb[TCA_POLICE_PEAKRATE]); |