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netfilter: nf_conntrack: simplify __nf_ct_try_assign_helper() return logic

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Instead of several goto's just to return the result, simply return it.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira 2016-09-09 14:01:26 +02:00 committed by Pablo Neira Ayuso
parent 71212c9b04
commit cf71c03edf
1 changed files with 6 additions and 9 deletions
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15
net/netfilter/nf_conntrack_helper.c
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@ -189,7 +189,6 @@ int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
struct nf_conntrack_helper *helper = NULL;
struct nf_conn_help *help;
struct net *net = nf_ct_net(ct);
int ret = 0;
/* We already got a helper explicitly attached. The function
* nf_conntrack_alter_reply - in case NAT is in use - asks for looking
@ -223,15 +222,13 @@ int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
if (helper == NULL) {
if (help)
RCU_INIT_POINTER(help->helper, NULL);
goto out;
return 0;
}
if (help == NULL) {
help = nf_ct_helper_ext_add(ct, helper, flags);
if (help == NULL) {
ret = -ENOMEM;
goto out;
}
if (help == NULL)
return -ENOMEM;
} else {
/* We only allow helper re-assignment of the same sort since
* we cannot reallocate the helper extension area.
@ -240,13 +237,13 @@ int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
if (tmp && tmp->help != helper->help) {
RCU_INIT_POINTER(help->helper, NULL);
goto out;
return 0;
}
}
rcu_assign_pointer(help->helper, helper);
out:
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(__nf_ct_try_assign_helper);