ipv4: Use inet_csk_route_child_sock() in DCCP and TCP.
Operation order is now transposed, we first create the child
socket then we try to hook up the route.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index a712171..374de3c 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1421,15 +1421,11 @@
if (sk_acceptq_is_full(sk))
goto exit_overflow;
- if (!dst && (dst = inet_csk_route_req(sk, req)) == NULL)
- goto exit;
-
newsk = tcp_create_openreq_child(sk, req, skb);
if (!newsk)
goto exit_nonewsk;
newsk->sk_gso_type = SKB_GSO_TCPV4;
- sk_setup_caps(newsk, dst);
newtp = tcp_sk(newsk);
newinet = inet_sk(newsk);
@@ -1447,6 +1443,11 @@
inet_csk(newsk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
newinet->inet_id = newtp->write_seq ^ jiffies;
+ if (!dst && (dst = inet_csk_route_child_sock(sk, newsk, req)) == NULL)
+ goto put_and_exit;
+
+ sk_setup_caps(newsk, dst);
+
tcp_mtup_init(newsk);
tcp_sync_mss(newsk, dst_mtu(dst));
newtp->advmss = dst_metric_advmss(dst);
@@ -1474,10 +1475,8 @@
}
#endif
- if (__inet_inherit_port(sk, newsk) < 0) {
- sock_put(newsk);
- goto exit;
- }
+ if (__inet_inherit_port(sk, newsk) < 0)
+ goto put_and_exit;
__inet_hash_nolisten(newsk, NULL);
return newsk;
@@ -1489,6 +1488,9 @@
exit:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
return NULL;
+put_and_exit:
+ sock_put(newsk);
+ goto exit;
}
EXPORT_SYMBOL(tcp_v4_syn_recv_sock);