From 71bcb09a57894fa35591ce93dd972065eeecb63a Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 25 Nov 2008 21:13:31 -0800 Subject: tc: check for errors in gen_rate_estimator creation The functions gen_new_estimator and gen_replace_estimator can return errors, but they were being ignored. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- net/sched/sch_hfsc.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) (limited to 'net/sched/sch_hfsc.c') diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c index 613179c9969c..45c31b1a4e1d 100644 --- a/net/sched/sch_hfsc.c +++ b/net/sched/sch_hfsc.c @@ -1018,6 +1018,14 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid, } cur_time = psched_get_time(); + if (tca[TCA_RATE]) { + err = gen_replace_estimator(&cl->bstats, &cl->rate_est, + qdisc_root_sleeping_lock(sch), + tca[TCA_RATE]); + if (err) + return err; + } + sch_tree_lock(sch); if (rsc != NULL) hfsc_change_rsc(cl, rsc, cur_time); @@ -1034,10 +1042,6 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid, } sch_tree_unlock(sch); - if (tca[TCA_RATE]) - gen_replace_estimator(&cl->bstats, &cl->rate_est, - qdisc_root_sleeping_lock(sch), - tca[TCA_RATE]); return 0; } @@ -1063,6 +1067,16 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid, if (cl == NULL) return -ENOBUFS; + if (tca[TCA_RATE]) { + err = gen_new_estimator(&cl->bstats, &cl->rate_est, + qdisc_root_sleeping_lock(sch), + tca[TCA_RATE]); + if (err) { + kfree(cl); + return err; + } + } + if (rsc != NULL) hfsc_change_rsc(cl, rsc, 0); if (fsc != NULL) @@ -1093,9 +1107,6 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid, qdisc_class_hash_grow(sch, &q->clhash); - if (tca[TCA_RATE]) - gen_new_estimator(&cl->bstats, &cl->rate_est, - qdisc_root_sleeping_lock(sch), tca[TCA_RATE]); *arg = (unsigned long)cl; return 0; } -- cgit v1.2.3