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sched: check negative err value to safe one level of indent

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As it is more common, check err for !0. That allows to safe one level of
indentation and makes the code easier to read. Also, make 'next' variable
global in function as it is used twice.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-02-09 14:39:00 +01:00 committed by David S. Miller
parent 7215032ced
commit 40c81b25b1
1 changed files with 9 additions and 13 deletions
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22
net/sched/cls_api.c
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@ -214,6 +214,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n)
struct Qdisc *q;
struct tcf_proto __rcu **back;
struct tcf_proto __rcu **chain;
struct tcf_proto *next;
struct tcf_proto *tp;
const struct Qdisc_class_ops *cops;
unsigned long cl;
@ -355,10 +356,8 @@ replay:
if (fh == 0) {
if (n->nlmsg_type == RTM_DELTFILTER && t->tcm_handle == 0) {
struct tcf_proto *next = rtnl_dereference(tp->next);
next = rtnl_dereference(tp->next);
RCU_INIT_POINTER(*back, next);
tfilter_notify(net, skb, n, tp, fh,
RTM_DELTFILTER, false);
tcf_proto_destroy(tp, true);
@ -383,16 +382,13 @@ replay:
break;
case RTM_DELTFILTER:
err = tp->ops->delete(tp, fh);
if (err == 0) {
struct tcf_proto *next = rtnl_dereference(tp->next);
tfilter_notify(net, skb, n, tp,
t->tcm_handle,
RTM_DELTFILTER, false);
if (tcf_proto_destroy(tp, false))
RCU_INIT_POINTER(*back, next);
}
goto errout;
if (err)
goto errout;
next = rtnl_dereference(tp->next);
tfilter_notify(net, skb, n, tp, t->tcm_handle,
RTM_DELTFILTER, false);
if (tcf_proto_destroy(tp, false))
RCU_INIT_POINTER(*back, next);
case RTM_GETTFILTER:
err = tfilter_notify(net, skb, n, tp, fh,
RTM_NEWTFILTER, true);