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net: sched: fix static key imbalance in case of ingress/clsact_init error 

Move static key increments to the beginning of the init function
so they pair 1:1 with decrements in ingress/clsact_destroy,
which is called in case ingress/clsact_init fails.

Fixes: 6529eaba33 ("net: sched: introduce tcf block infractructure")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-12-15 12:40:13 +01:00 committed by David S. Miller
parent 343723dd51
commit b59e6979a8
1 changed files with 5 additions and 4 deletions
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9
net/sched/sch_ingress.c
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@ -68,6 +68,8 @@ static int ingress_init(struct Qdisc *sch, struct nlattr *opt)
struct net_device *dev = qdisc_dev(sch);
int err;
net_inc_ingress_queue();
mini_qdisc_pair_init(&q->miniqp, sch, &dev->miniq_ingress);
q->block_info.binder_type = TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS;
@ -78,7 +80,6 @@ static int ingress_init(struct Qdisc *sch, struct nlattr *opt)
if (err)
return err;
net_inc_ingress_queue();
sch->flags |= TCQ_F_CPUSTATS;
return 0;
@ -172,6 +173,9 @@ static int clsact_init(struct Qdisc *sch, struct nlattr *opt)
struct net_device *dev = qdisc_dev(sch);
int err;
net_inc_ingress_queue();
net_inc_egress_queue();
mini_qdisc_pair_init(&q->miniqp_ingress, sch, &dev->miniq_ingress);
q->ingress_block_info.binder_type = TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS;
@ -192,9 +196,6 @@ static int clsact_init(struct Qdisc *sch, struct nlattr *opt)
if (err)
return err;
net_inc_ingress_queue();
net_inc_egress_queue();
sch->flags |= TCQ_F_CPUSTATS;
return 0;