tcp: fix TCP_MAXSEG for established IPv6 passive sockets
[pandora-kernel.git] / net / ipv6 / tcp_ipv6.c
index b859e4a..4a56574 100644 (file)
@@ -1494,6 +1494,10 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
        tcp_mtup_init(newsk);
        tcp_sync_mss(newsk, dst_mtu(dst));
        newtp->advmss = dst_metric_advmss(dst);
+       if (tcp_sk(sk)->rx_opt.user_mss &&
+           tcp_sk(sk)->rx_opt.user_mss < newtp->advmss)
+               newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;
+
        tcp_initialize_rcv_mss(newsk);
        if (tcp_rsk(req)->snt_synack)
                tcp_valid_rtt_meas(newsk,