@@ -363,10 +363,8 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
*/
RCU_INIT_POINTER(ireq->ireq_opt, tcp_v4_save_options(sock_net(sk), skb));
- if (security_inet_conn_request(sk, skb, req)) {
- reqsk_free(req);
- goto out;
- }
+ if (security_inet_conn_request(sk, skb, req))
+ goto out_free;
req->num_retrans = 0;
@@ -383,10 +381,8 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
ireq->ir_loc_addr, th->source, th->dest, sk->sk_uid);
security_req_classify_flow(req, flowi4_to_flowi(&fl4));
rt = ip_route_output_key(sock_net(sk), &fl4);
- if (IS_ERR(rt)) {
- reqsk_free(req);
- goto out;
- }
+ if (IS_ERR(rt))
+ goto out_free;
/* Try to redo what tcp_v4_send_synack did. */
req->rsk_window_clamp = tp->window_clamp ? :dst_metric(&rt->dst, RTAX_WINDOW);
@@ -405,5 +401,10 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
*/
if (ret)
inet_sk(ret)->cork.fl.u.ip4 = fl4;
-out: return ret;
+ return ret;
+
+out_free:
+ reqsk_free(req);
+out:
+ return ret;
}
Add a common error label and use it. Followup patch would need to add a 3rd 'if (err) { free(x); goto out;}. This will allow use of simpler 'if (err) goto free' instead. Signed-off-by: Florian Westphal <fw@strlen.de> --- net/ipv4/syncookies.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-)