From nobody Wed Feb 11 02:09:11 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 1499151423230570.7628349823907; Mon, 3 Jul 2017 23:57:03 -0700 (PDT) Received: from localhost ([::1]:38937 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dSHle-0007fQ-3l for importer@patchew.org; Tue, 04 Jul 2017 02:57:02 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43925) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dSHhh-0003hb-0I for qemu-devel@nongnu.org; Tue, 04 Jul 2017 02:52:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dSHhe-00073R-DS for qemu-devel@nongnu.org; Tue, 04 Jul 2017 02:52:57 -0400 Received: from [59.151.112.132] (port=28283 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dSHhe-0006vy-14 for qemu-devel@nongnu.org; Tue, 04 Jul 2017 02:52:54 -0400 Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 04 Jul 2017 14:52:43 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (unknown [10.167.33.83]) by cn.fujitsu.com (Postfix) with ESMTP id 1129547F64FB; Tue, 4 Jul 2017 14:52:42 +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 14:52:40 +0800 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="20826723" From: Zhang Chen To: qemu devel , Jason Wang Date: Tue, 4 Jul 2017 14:53:48 +0800 Message-ID: <1499151236-14671-5-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: 1129547F64FB.ABCA8 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 04/12] net/filter-mirror.c: Make filter mirror support vnet support. 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 filter-mirror, 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 filter-mirror,id=3Dm0,netdev=3Dhn0,queue=3Dtx,outdev=3Dmirror0,vnet= _hdr_support If it has vnet_hdr_support flag, we will change the sending packet format f= rom struct {int size; const uint8_t buf[];} to {int size; int vnet_hdr_len; con= st uint8_t buf[];}. make other module(like colo-compare) know how to parse net packet correctly. Signed-off-by: Zhang Chen --- net/filter-mirror.c | 42 +++++++++++++++++++++++++++++++++++++++++- qemu-options.hx | 5 ++--- 2 files changed, 43 insertions(+), 4 deletions(-) diff --git a/net/filter-mirror.c b/net/filter-mirror.c index 69cf4ca..4a849d4 100644 --- a/net/filter-mirror.c +++ b/net/filter-mirror.c @@ -41,12 +41,14 @@ typedef struct MirrorState { CharBackend chr_in; CharBackend chr_out; SocketReadState rs; + bool vnet_hdr; } MirrorState; =20 static int filter_send(MirrorState *s, const struct iovec *iov, int iovcnt) { + NetFilterState *nf =3D NETFILTER(s); int ret =3D 0; ssize_t size =3D 0; uint32_t len =3D 0; @@ -63,6 +65,23 @@ static int filter_send(MirrorState *s, goto err; } =20 + if (s->vnet_hdr) { + /* + * If vnet_hdr =3D on, we send vnet header len to make other + * module(like colo-compare) know how to parse net + * packet correctly. + */ + ssize_t vnet_hdr_len; + + vnet_hdr_len =3D nf->netdev->vnet_hdr_len; + + 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; + } + } + buf =3D g_malloc(size); iov_to_buf(iov, iovcnt, 0, buf, size); ret =3D qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)buf, size); @@ -229,7 +248,7 @@ static void filter_redirector_setup(NetFilterState *nf,= Error **errp) } } =20 - net_socket_rs_init(&s->rs, redirector_rs_finalize, false); + net_socket_rs_init(&s->rs, redirector_rs_finalize, s->vnet_hdr); =20 if (s->indev) { chr =3D qemu_chr_find(s->indev); @@ -318,6 +337,20 @@ static void filter_mirror_set_outdev(Object *obj, } } =20 +static bool filter_mirror_get_vnet_hdr(Object *obj, Error **errp) +{ + MirrorState *s =3D FILTER_MIRROR(obj); + + return s->vnet_hdr; +} + +static void filter_mirror_set_vnet_hdr(Object *obj, bool value, Error **er= rp) +{ + MirrorState *s =3D FILTER_MIRROR(obj); + + s->vnet_hdr =3D value; +} + static char *filter_redirector_get_outdev(Object *obj, Error **errp) { MirrorState *s =3D FILTER_REDIRECTOR(obj); @@ -337,8 +370,15 @@ static void filter_redirector_set_outdev(Object *obj, =20 static void filter_mirror_init(Object *obj) { + MirrorState *s =3D FILTER_MIRROR(obj); + object_property_add_str(obj, "outdev", filter_mirror_get_outdev, filter_mirror_set_outdev, NULL); + + s->vnet_hdr =3D false; + object_property_add_bool(obj, "vnet_hdr_support", + filter_mirror_get_vnet_hdr, + filter_mirror_set_vnet_hdr, NULL); } =20 static void filter_redirector_init(Object *obj) diff --git a/qemu-options.hx b/qemu-options.hx index 297bd8a..f0add6f 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4238,10 +4238,9 @@ queue @var{all|rx|tx} is an option that can be appli= ed to any netfilter. @option{tx}: the filter is attached to the transmit queue of the netdev, where it will receive packets sent by the netdev. =20 -@item -object filter-mirror,id=3D@var{id},netdev=3D@var{netdevid},outdev= =3D@var{chardevid}[,queue=3D@var{all|rx|tx}] +@item -object filter-mirror,id=3D@var{id},netdev=3D@var{netdevid},outdev= =3D@var{chardevid},queue=3D@var{all|rx|tx}[,vnet_hdr_support] =20 -filter-mirror on netdev @var{netdevid},mirror net packet to chardev -@var{chardevid} +filter-mirror on netdev @var{netdevid},mirror net packet to chardev@var{ch= ardevid}, if it has the vnet_hdr_support flag, filter-mirror will mirror pa= cket with vnet_hdr_len. =20 @item -object filter-redirector,id=3D@var{id},netdev=3D@var{netdevid},inde= v=3D@var{chardevid}, outdev=3D@var{chardevid}[,queue=3D@var{all|rx|tx}] --=20 2.7.4