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sched: move err set right before goto errout in tc_ctl_tfilter

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This makes the reader to know right away what is the error value.

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 14:38:58 +01:00 committed by David S. Miller
parent 33a48927c1
commit 6bb16e7ae2
1 changed files with 19 additions and 10 deletions
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29
net/sched/cls_api.c
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@ -293,9 +293,10 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n)
/* And the last stroke */
chain = cops->tcf_chain(q, cl);
err = -EINVAL;
if (chain == NULL)
if (chain == NULL) {
err = -EINVAL;
goto errout;
}
if (n->nlmsg_type == RTM_DELTFILTER && prio == 0) {
tfilter_notify_chain(net, skb, n, chain, RTM_DELTFILTER);
tcf_destroy_chain(chain);
@ -310,8 +311,10 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n)
if (tp->prio >= prio) {
if (tp->prio == prio) {
if (!nprio ||
(tp->protocol != protocol && protocol))
(tp->protocol != protocol && protocol)) {
err = -EINVAL;
goto errout;
}
} else
tp = NULL;
break;
@ -321,13 +324,16 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n)
if (tp == NULL) {
/* Proto-tcf does not exist, create new one */
if (tca[TCA_KIND] == NULL || !protocol)
if (tca[TCA_KIND] == NULL || !protocol) {
err = -EINVAL;
goto errout;
}
err = -ENOENT;
if (n->nlmsg_type != RTM_NEWTFILTER ||
!(n->nlmsg_flags & NLM_F_CREATE))
!(n->nlmsg_flags & NLM_F_CREATE)) {
err = -ENOENT;
goto errout;
}
if (!nprio)
nprio = TC_H_MAJ(tcf_auto_prio(rtnl_dereference(*back)));
@ -339,8 +345,10 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n)
goto errout;
}
tp_created = 1;
} else if (tca[TCA_KIND] && nla_strcmp(tca[TCA_KIND], tp->ops->kind))
} else if (tca[TCA_KIND] && nla_strcmp(tca[TCA_KIND], tp->ops->kind)) {
err = -EINVAL;
goto errout;
}
fh = tp->ops->get(tp, t->tcm_handle);
@ -357,17 +365,18 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n)
goto errout;
}
err = -ENOENT;
if (n->nlmsg_type != RTM_NEWTFILTER ||
!(n->nlmsg_flags & NLM_F_CREATE))
!(n->nlmsg_flags & NLM_F_CREATE)) {
err = -ENOENT;
goto errout;
}
} else {
switch (n->nlmsg_type) {
case RTM_NEWTFILTER:
err = -EEXIST;
if (n->nlmsg_flags & NLM_F_EXCL) {
if (tp_created)
tcf_proto_destroy(tp, true);
err = -EEXIST;
goto errout;
}
break;