diff options
Diffstat (limited to 'net/sched/sch_hfsc.c')
| -rw-r--r-- | net/sched/sch_hfsc.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c index 70b0c5873d32..3554085bc2be 100644 --- a/net/sched/sch_hfsc.c +++ b/net/sched/sch_hfsc.c @@ -116,7 +116,6 @@ struct hfsc_class { struct net_rate_estimator __rcu *rate_est; struct tcf_proto __rcu *filter_list; /* filter list */ struct tcf_block *block; - unsigned int filter_cnt; /* filter count */ unsigned int level; /* class level in hierarchy */ struct hfsc_sched *sched; /* scheduler data */ @@ -1012,6 +1011,10 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid, if (parent == NULL) return -ENOENT; } + if (!(parent->cl_flags & HFSC_FSC) && parent != &q->root) { + NL_SET_ERR_MSG(extack, "Invalid parent - parent class must have FSC"); + return -EINVAL; + } if (classid == 0 || TC_H_MAJ(classid ^ sch->handle) != 0) return -EINVAL; @@ -1094,8 +1097,11 @@ hfsc_delete_class(struct Qdisc *sch, unsigned long arg, struct hfsc_sched *q = qdisc_priv(sch); struct hfsc_class *cl = (struct hfsc_class *)arg; - if (cl->level > 0 || cl->filter_cnt > 0 || cl == &q->root) + if (cl->level > 0 || qdisc_class_in_use(&cl->cl_common) || + cl == &q->root) { + NL_SET_ERR_MSG(extack, "HFSC class in use"); return -EBUSY; + } sch_tree_lock(sch); @@ -1223,7 +1229,7 @@ hfsc_bind_tcf(struct Qdisc *sch, unsigned long parent, u32 classid) if (cl != NULL) { if (p != NULL && p->level <= cl->level) return 0; - cl->filter_cnt++; + qdisc_class_get(&cl->cl_common); } return (unsigned long)cl; @@ -1234,7 +1240,7 @@ hfsc_unbind_tcf(struct Qdisc *sch, unsigned long arg) { struct hfsc_class *cl = (struct hfsc_class *)arg; - cl->filter_cnt--; + qdisc_class_put(&cl->cl_common); } static struct tcf_block *hfsc_tcf_block(struct Qdisc *sch, unsigned long arg, |