From nobody Wed Feb 11 02:07:39 2026 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 1499152468320972.0003559118807; Tue, 4 Jul 2017 00:14:28 -0700 (PDT) Received: from localhost ([::1]:39018 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dSI2V-0004U6-1F for importer@patchew.org; Tue, 04 Jul 2017 03:14:27 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44002) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dSHhi-0003jb-SQ for qemu-devel@nongnu.org; Tue, 04 Jul 2017 02:53:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dSHhh-00076X-HH for qemu-devel@nongnu.org; Tue, 04 Jul 2017 02:52:58 -0400 Received: from [59.151.112.132] (port=16463 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dSHhg-0006zC-OA for qemu-devel@nongnu.org; Tue, 04 Jul 2017 02:52:57 -0400 Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 04 Jul 2017 14:52:46 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (unknown [10.167.33.83]) by cn.fujitsu.com (Postfix) with ESMTP id 4C60247F64D3; Tue, 4 Jul 2017 14:52:45 +0800 (CST) Received: from localhost.localdomain (10.167.226.56) by G08CNEXCHPEKD02.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.319.2; Tue, 4 Jul 2017 14:52:44 +0800 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="20826735" From: Zhang Chen To: qemu devel , Jason Wang Date: Tue, 4 Jul 2017 14:53:52 +0800 Message-ID: <1499151236-14671-9-git-send-email-zhangchen.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1499151236-14671-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> References: <1499151236-14671-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.56] X-yoursite-MailScanner-ID: 4C60247F64D3.AC52D X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: zhangchen.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Subject: [Qemu-devel] [PATCH V7 08/12] net/colo-compare.c: Make colo-compare support vnet_hdr_len 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: Li Zhijian , zhanghailiang , Zhang Chen 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" We add the vnet_hdr_support option for colo-compare, default is disabled. If you use virtio-net-pci or other driver needs vnet_hdr, please enable it. You can use it for example: -object colo-compare,id=3Dcomp0,primary_in=3Dcompare0-0,secondary_in=3Dcomp= are1,outdev=3Dcompare_out0,vnet_hdr_support COLO-compare can get vnet header length from filter, Add vnet_hdr_len to struct packet and output packet with the vnet_hdr_len. Signed-off-by: Zhang Chen --- net/colo-compare.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++---= ---- qemu-options.hx | 4 ++-- 2 files changed, 55 insertions(+), 9 deletions(-) diff --git a/net/colo-compare.c b/net/colo-compare.c index e10a305..945e7d4 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -73,6 +73,7 @@ typedef struct CompareState { CharBackend chr_out; SocketReadState pri_rs; SocketReadState sec_rs; + bool vnet_hdr; =20 /* connection list: the connections belonged to this NIC could be found * in this list. @@ -99,7 +100,8 @@ enum { =20 static int compare_chr_send(CompareState *s, const uint8_t *buf, - uint32_t size); + uint32_t size, + uint32_t vnet_hdr_len); =20 static gint seq_sorter(Packet *a, Packet *b, gpointer data) { @@ -483,7 +485,10 @@ static void colo_compare_connection(void *opaque, void= *user_data) } =20 if (result) { - ret =3D compare_chr_send(s, pkt->data, pkt->size); + ret =3D compare_chr_send(s, + pkt->data, + pkt->size, + pkt->vnet_hdr_len); if (ret < 0) { error_report("colo_send_primary_packet failed"); } @@ -506,7 +511,8 @@ static void colo_compare_connection(void *opaque, void = *user_data) =20 static int compare_chr_send(CompareState *s, const uint8_t *buf, - uint32_t size) + uint32_t size, + uint32_t vnet_hdr_len) { int ret =3D 0; uint32_t len =3D htonl(size); @@ -520,6 +526,18 @@ static int compare_chr_send(CompareState *s, goto err; } =20 + if (s->vnet_hdr) { + /* + * We send vnet header len make other module(like filter-redirecto= r) + * know how to parse net packet correctly. + */ + len =3D htonl(vnet_hdr_len); + ret =3D qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)&len, sizeof= (len)); + if (ret !=3D sizeof(len)) { + goto err; + } + } + ret =3D qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)buf, size); if (ret !=3D size) { goto err; @@ -657,13 +675,32 @@ static void compare_set_outdev(Object *obj, const cha= r *value, Error **errp) s->outdev =3D g_strdup(value); } =20 +static bool compare_get_vnet_hdr(Object *obj, Error **errp) +{ + CompareState *s =3D COLO_COMPARE(obj); + + return s->vnet_hdr; +} + +static void compare_set_vnet_hdr(Object *obj, + bool value, + Error **errp) +{ + CompareState *s =3D COLO_COMPARE(obj); + + s->vnet_hdr =3D value; +} + static void compare_pri_rs_finalize(SocketReadState *pri_rs) { CompareState *s =3D container_of(pri_rs, CompareState, pri_rs); =20 if (packet_enqueue(s, PRIMARY_IN)) { trace_colo_compare_main("primary: unsupported packet in"); - compare_chr_send(s, pri_rs->buf, pri_rs->packet_len); + compare_chr_send(s, + pri_rs->buf, + pri_rs->packet_len, + pri_rs->vnet_hdr_len); } else { /* compare connection */ g_queue_foreach(&s->conn_list, colo_compare_connection, s); @@ -745,8 +782,8 @@ static void colo_compare_complete(UserCreatable *uc, Er= ror **errp) return; } =20 - net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize, false); - net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize, false); + net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize, s->vnet_hdr); + net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize, s->vnet_hdr); =20 g_queue_init(&s->conn_list); =20 @@ -772,7 +809,10 @@ static void colo_flush_packets(void *opaque, void *use= r_data) =20 while (!g_queue_is_empty(&conn->primary_list)) { pkt =3D g_queue_pop_head(&conn->primary_list); - compare_chr_send(s, pkt->data, pkt->size); + compare_chr_send(s, + pkt->data, + pkt->size, + pkt->vnet_hdr_len); packet_destroy(pkt, NULL); } while (!g_queue_is_empty(&conn->secondary_list)) { @@ -790,6 +830,8 @@ static void colo_compare_class_init(ObjectClass *oc, vo= id *data) =20 static void colo_compare_init(Object *obj) { + CompareState *s =3D COLO_COMPARE(obj); + object_property_add_str(obj, "primary_in", compare_get_pri_indev, compare_set_pri_indev, NULL); @@ -799,6 +841,10 @@ static void colo_compare_init(Object *obj) object_property_add_str(obj, "outdev", compare_get_outdev, compare_set_outdev, NULL); + + s->vnet_hdr =3D false; + object_property_add_bool(obj, "vnet_hdr_support", compare_get_vnet_hdr, + compare_set_vnet_hdr, NULL); } =20 static void colo_compare_finalize(Object *obj) diff --git a/qemu-options.hx b/qemu-options.hx index 3a5951c..1107896 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4271,13 +4271,13 @@ 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 tcpdu= mp or Wireshark. =20 -@item -object colo-compare,id=3D@var{id},primary_in=3D@var{chardevid},seco= ndary_in=3D@var{chardevid}, -outdev=3D@var{chardevid} +@item -object colo-compare,id=3D@var{id},primary_in=3D@var{chardevid},seco= ndary_in=3D@var{chardevid},outdev=3D@var{chardevid}[,vnet_hdr_support] =20 Colo-compare gets packet from primary_in@var{chardevid} and secondary_in@v= ar{chardevid}, than compare primary packet with secondary packet. If the packets are same, we will output primary packet to outdev@var{chardevid}, else we will notify colo-frame do checkpoint and send primary packet to outdev@var{chardevid}. +if it has the vnet_hdr_support flag, colo compare will send/recv packet wi= th vnet_hdr_len. =20 we must use it with the help of filter-mirror and filter-redirector. =20 --=20 2.7.4