From nobody Thu Dec 18 07:51:15 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 14928502404911016.3329773368243; Sat, 22 Apr 2017 01:37:20 -0700 (PDT) Received: from localhost ([::1]:34732 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d1qXe-00015d-7z for importer@patchew.org; Sat, 22 Apr 2017 04:37:18 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59909) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d1qNf-0001wR-3K for qemu-devel@nongnu.org; Sat, 22 Apr 2017 04:27:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d1qNc-0000o9-Em for qemu-devel@nongnu.org; Sat, 22 Apr 2017 04:26:59 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:3508 helo=dggrg01-dlp.huawei.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1d1qNb-0000lS-Qr for qemu-devel@nongnu.org; Sat, 22 Apr 2017 04:26:56 -0400 Received: from 172.30.72.57 (EHLO DGGEML403-HUB.china.huawei.com) ([172.30.72.57]) by dggrg01-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id ANE69260; Sat, 22 Apr 2017 16:26:42 +0800 (CST) Received: from localhost (10.177.24.212) by DGGEML403-HUB.china.huawei.com (10.3.17.33) with Microsoft SMTP Server id 14.3.301.0; Sat, 22 Apr 2017 16:26:33 +0800 From: zhanghailiang To: , Date: Sat, 22 Apr 2017 16:25:57 +0800 Message-ID: <1492849558-17540-18-git-send-email-zhang.zhanghailiang@huawei.com> X-Mailer: git-send-email 2.7.2.windows.1 In-Reply-To: <1492849558-17540-1-git-send-email-zhang.zhanghailiang@huawei.com> References: <1492849558-17540-1-git-send-email-zhang.zhanghailiang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.24.212] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020205.58FB13C3.0064, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 03e97cbcae354ed26977b1fd566931dc X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 45.249.212.187 Subject: [Qemu-devel] [PATCH v2 17/18] filter-rewriter: handle checkpoint and failover event X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lizhijian@cn.fujitsu.com, xiecl.fnst@cn.fujitsu.com, zhanghailiang , zhangchen.fnst@cn.fujitsu.com, quintela@redhat.com, Jason Wang Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" After one round of checkpoint, the states between PVM and SVM become consistent, so it is unnecessary to adjust the sequence of net packets for old connections, besides, while failover happens, filter-rewriter needs to check if it still needs to adjust sequence of net packets. Cc: Jason Wang Signed-off-by: zhanghailiang --- net/filter-rewriter.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/net/filter-rewriter.c b/net/filter-rewriter.c index c9a6d43..0a90b11 100644 --- a/net/filter-rewriter.c +++ b/net/filter-rewriter.c @@ -22,6 +22,7 @@ #include "qemu/main-loop.h" #include "qemu/iov.h" #include "net/checksum.h" +#include "net/colo.h" =20 #define FILTER_COLO_REWRITER(obj) \ OBJECT_CHECK(RewriterState, (obj), TYPE_FILTER_REWRITER) @@ -270,6 +271,43 @@ static ssize_t colo_rewriter_receive_iov(NetFilterStat= e *nf, return 0; } =20 +static void reset_seq_offset(gpointer key, gpointer value, gpointer user_d= ata) +{ + Connection *conn =3D (Connection *)value; + + conn->offset =3D 0; +} + +static gboolean offset_is_nonzero(gpointer key, + gpointer value, + gpointer user_data) +{ + Connection *conn =3D (Connection *)value; + + return conn->offset ? true : false; +} + +static void colo_rewriter_handle_event(NetFilterState *nf, int event, + Error **errp) +{ + RewriterState *rs =3D FILTER_COLO_REWRITER(nf); + + switch (event) { + case COLO_CHECKPOINT: + g_hash_table_foreach(rs->connection_track_table, + reset_seq_offset, NULL); + break; + case COLO_FAILOVER: + if (!g_hash_table_find(rs->connection_track_table, + offset_is_nonzero, NULL)) { + object_property_set_str(OBJECT(nf), "off", "status", errp); + } + break; + default: + break; + } +} + static void colo_rewriter_cleanup(NetFilterState *nf) { RewriterState *s =3D FILTER_COLO_REWRITER(nf); @@ -299,6 +337,7 @@ static void colo_rewriter_class_init(ObjectClass *oc, v= oid *data) nfc->setup =3D colo_rewriter_setup; nfc->cleanup =3D colo_rewriter_cleanup; nfc->receive_iov =3D colo_rewriter_receive_iov; + nfc->handle_event =3D colo_rewriter_handle_event; } =20 static const TypeInfo colo_rewriter_info =3D { --=20 1.8.3.1