From: Jiri Pirko <jiri@mellanox.com>
Date: Fri, 15 Dec 2017 12:40:13 +0100
Subject: net: sched: fix static key imbalance in case of ingress/clsact_init
error
Patch-mainline: v4.15-rc4
Git-commit: b59e6979a86384e68b0ab6ffeab11f0034fba82d
References: bsc1056787
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: 6529eaba33f0 ("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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
net/sched/sch_ingress.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/net/sched/sch_ingress.c
+++ b/net/sched/sch_ingress.c
@@ -68,6 +68,8 @@ static int ingress_init(struct Qdisc *sc
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 *sc
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 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
if (err)
return err;
- net_inc_ingress_queue();
- net_inc_egress_queue();
-
sch->flags |= TCQ_F_CPUSTATS;
return 0;