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net: sched: cls_cgroup: no need to call tcf_exts_change for newly allocated struct

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As the new struct just was allocated, so no need to use tcf_exts_change
to do atomic change, and we can just fill-up the unused exts struct
directly by tcf_exts_validate.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-08-04 14:29:11 +02:00 committed by David S. Miller
parent 6839da326d
commit 8cc6251381
1 changed files with 2 additions and 12 deletions
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14
net/sched/cls_cgroup.c
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@ -76,7 +76,6 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
struct nlattr *tb[TCA_CGROUP_MAX + 1];
struct cls_cgroup_head *head = rtnl_dereference(tp->root);
struct cls_cgroup_head *new;
struct tcf_exts e;
int err;
if (!tca[TCA_OPTIONS])
@ -102,22 +101,13 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
if (err < 0)
goto errout;
err = tcf_exts_init(&e, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &new->exts, ovr);
if (err < 0)
goto errout;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0) {
tcf_exts_destroy(&e);
goto errout;
}
err = tcf_em_tree_validate(tp, tb[TCA_CGROUP_EMATCHES], &new->ematches);
if (err < 0) {
tcf_exts_destroy(&e);
if (err < 0)
goto errout;
}
tcf_exts_change(tp, &new->exts, &e);
rcu_assign_pointer(tp->root, new);
if (head)