From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=FROM_WSP_TRAIL, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6272FC35675 for ; Sun, 23 Feb 2020 21:07:56 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3A1BB206E2 for ; Sun, 23 Feb 2020 21:07:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3A1BB206E2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:56842 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5yTj-00055e-D1 for qemu-devel@archiver.kernel.org; Sun, 23 Feb 2020 16:07:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:56605) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5ySv-0004Eg-JF for qemu-devel@nongnu.org; Sun, 23 Feb 2020 16:07:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j5ySu-0001gD-9M for qemu-devel@nongnu.org; Sun, 23 Feb 2020 16:07:05 -0500 Received: from mga05.intel.com ([192.55.52.43]:59521) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j5ySt-0001fh-WF for qemu-devel@nongnu.org; Sun, 23 Feb 2020 16:07:04 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Feb 2020 13:07:00 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,477,1574150400"; d="scan'208";a="230945808" Received: from unknown (HELO localhost.localdomain) ([10.239.13.19]) by fmsmga008.fm.intel.com with ESMTP; 23 Feb 2020 13:06:59 -0800 From: Zhang Chen To: Jason Wang , qemu-dev Subject: [PATCH 1/2] net/colo-compare.c: Expose "compare_timeout" to user Date: Mon, 24 Feb 2020 04:58:04 +0800 Message-Id: <20200223205805.26412-2-chen.zhang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200223205805.26412-1-chen.zhang@intel.com> References: <20200223205805.26412-1-chen.zhang@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.43 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Cho , Zhang Chen , "Dr . David Alan Gilbert" , Zhang Chen Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Zhang Chen The "compare_timeout" determines the max time to hold the primary net packet. This patch expose the "compare_timeout", make user can adjest this value according to the specific application scenario. QMP command demo: { "execute": "qom-get", "arguments": { "path": "/objects/comp0", "property": "compare_timeout" } } { "execute": "qom-set", "arguments": { "path": "/objects/comp0", "property": "compare_timeout", "value": 5000} } Signed-off-by: Zhang Chen --- net/colo-compare.c | 47 ++++++++++++++++++++++++++++++++++++++++++++-- qemu-options.hx | 5 +++-- 2 files changed, 48 insertions(+), 4 deletions(-) diff --git a/net/colo-compare.c b/net/colo-compare.c index 7ee17f2cf8..ec09b2a524 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -50,6 +50,7 @@ static NotifierList colo_compare_notifiers = /* TODO: Should be configurable */ #define REGULAR_PACKET_CHECK_MS 3000 +#define DEFAULT_TIME_OUT_MS 3000 static QemuMutex event_mtx; static QemuCond event_complete_cond; @@ -92,6 +93,7 @@ typedef struct CompareState { SocketReadState sec_rs; SocketReadState notify_rs; bool vnet_hdr; + uint32_t compare_timeout; /* * Record the connection that through the NIC @@ -607,10 +609,9 @@ static int colo_old_packet_check_one_conn(Connection *conn, CompareState *s) { GList *result = NULL; - int64_t check_time = REGULAR_PACKET_CHECK_MS; result = g_queue_find_custom(&conn->primary_list, - &check_time, + &s->compare_timeout, (GCompareFunc)colo_old_packet_check_one); if (result) { @@ -984,6 +985,39 @@ static void compare_set_notify_dev(Object *obj, const char *value, Error **errp) s->notify_dev = g_strdup(value); } +static void compare_get_timeout(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) +{ + CompareState *s = COLO_COMPARE(obj); + uint32_t value = s->compare_timeout; + + visit_type_uint32(v, name, &value, errp); +} + +static void compare_set_timeout(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) +{ + CompareState *s = COLO_COMPARE(obj); + Error *local_err = NULL; + uint32_t value; + + visit_type_uint32(v, name, &value, &local_err); + if (local_err) { + goto out; + } + if (!value) { + error_setg(&local_err, "Property '%s.%s' requires a positive value", + object_get_typename(obj), name); + goto out; + } + s->compare_timeout = value; + +out: + error_propagate(errp, local_err); +} + static void compare_pri_rs_finalize(SocketReadState *pri_rs) { CompareState *s = container_of(pri_rs, CompareState, pri_rs); @@ -1090,6 +1124,11 @@ static void colo_compare_complete(UserCreatable *uc, Error **errp) return; } + if (!s->compare_timeout) { + /* Set default value to 3000 MS */ + s->compare_timeout = DEFAULT_TIME_OUT_MS; + } + if (find_and_check_chardev(&chr, s->pri_indev, errp) || !qemu_chr_fe_init(&s->chr_pri_in, chr, errp)) { return; @@ -1185,6 +1224,10 @@ static void colo_compare_init(Object *obj) compare_get_notify_dev, compare_set_notify_dev, NULL); + object_property_add(obj, "compare_timeout", "uint32", + compare_get_timeout, + compare_set_timeout, NULL, NULL, NULL); + s->vnet_hdr = false; object_property_add_bool(obj, "vnet_hdr_support", compare_get_vnet_hdr, compare_set_vnet_hdr, NULL); diff --git a/qemu-options.hx b/qemu-options.hx index ac315c1ac4..3832d0ae8a 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4598,7 +4598,7 @@ Dump the network traffic on netdev @var{dev} to the file specified by The file format is libpcap, so it can be analyzed with tools such as tcpdump or Wireshark. -@item -object colo-compare,id=@var{id},primary_in=@var{chardevid},secondary_in=@var{chardevid},outdev=@var{chardevid},iothread=@var{id}[,vnet_hdr_support][,notify_dev=@var{id}] +@item -object colo-compare,id=@var{id},primary_in=@var{chardevid},secondary_in=@var{chardevid},outdev=@var{chardevid},iothread=@var{id}[,vnet_hdr_support][,notify_dev=@var{id}][,compare_timeout=@var{ms}] Colo-compare gets packet from primary_in@var{chardevid} and secondary_in@var{chardevid}, than compare primary packet with secondary packet. If the packets are same, we will output primary @@ -4606,7 +4606,8 @@ packet to outdev@var{chardevid}, else we will notify colo-frame do checkpoint and send primary packet to outdev@var{chardevid}. In order to improve efficiency, we need to put the task of comparison in another thread. If it has the vnet_hdr_support flag, colo compare -will send/recv packet with vnet_hdr_len. +will send/recv packet with vnet_hdr_len. The compare_timeout=@var{ms} +determines the maximum time colo-compare wait for primary packet. If you want to use Xen COLO, will need the notify_dev to notify Xen colo-frame to do checkpoint. -- 2.17.1