From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36108) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVX3v-0007O6-FF for qemu-devel@nongnu.org; Thu, 13 Jul 2017 01:53:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dVX3s-0006G0-CU for qemu-devel@nongnu.org; Thu, 13 Jul 2017 01:53:19 -0400 Received: from [59.151.112.132] (port=25092 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVX3r-0006C3-Vt for qemu-devel@nongnu.org; Thu, 13 Jul 2017 01:53:16 -0400 From: Zhang Chen Date: Thu, 13 Jul 2017 13:52:53 +0800 Message-ID: <1499925175-21218-3-git-send-email-zhangchen.fnst@cn.fujitsu.com> In-Reply-To: <1499925175-21218-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> References: <1499925175-21218-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [PATCH V2 2/4] net/colo-compare.c: Compare the tcp packets that has the same sequence number List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu devel , Jason Wang Cc: Zhang Chen , zhanghailiang , Li Zhijian If primary packet's sequence number not same with secondary packet's sequence number, no need to compare the packet other field. Signed-off-by: Zhang Chen --- net/colo-compare.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/colo-compare.c b/net/colo-compare.c index 0f8e198..2caeb80 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -222,6 +222,12 @@ static int colo_packet_compare_tcp(Packet *spkt, Packet *ppkt) ptcp = (struct tcphdr *)ppkt->transport_header; stcp = (struct tcphdr *)spkt->transport_header; + if ((ptcp->th_flags & TH_SYN) != TH_SYN && + ptcp->th_seq != stcp->th_seq) { + trace_colo_compare_main("colo_packet_compare_tcp seq not same"); + return -1; + } + /* * The 'identification' field in the IP header is *very* random * it almost never matches. Fudge this by ignoring differences in -- 2.7.4