From mboxrd@z Thu Jan 1 00:00:00 1970 From: Duan Jiong Subject: [PATCH] ipv6: udp: check sk->sk_no_check when sending udpv6 packet Date: Mon, 20 Jan 2014 11:51:01 +0800 Message-ID: <52DC9D25.9070809@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 7bit Cc: netdev To: David Miller Return-path: Received: from cn.fujitsu.com ([222.73.24.84]:39115 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752430AbaATDvi (ORCPT ); Sun, 19 Jan 2014 22:51:38 -0500 Sender: netdev-owner@vger.kernel.org List-ID: According to the user's intention, if SO_NO_CHECK option is set to true, the udpv6 packet should be out with no checksum. Signed-off-by: Duan Jiong --- net/ipv6/udp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 089c741..8808c69 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1001,6 +1001,10 @@ static int udp_v6_push_pending_frames(struct sock *sk) if (is_udplite) csum = udplite_csum_outgoing(sk, skb); + else if (sk->sk_no_check == UDP_CSUM_NOXMIT) { + skb->ip_summed = CHECKSUM_NONE; + goto send; + } else if (skb->ip_summed == CHECKSUM_PARTIAL) { /* UDP hardware csum */ udp6_hwcsum_outgoing(sk, skb, &fl6->saddr, &fl6->daddr, up->len); -- 1.8.3.1