From nobody Thu Nov 6 08:04:23 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 14926705271623.308456748017761; Wed, 19 Apr 2017 23:42:07 -0700 (PDT) Received: from localhost ([::1]:51908 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d15n3-0006ul-2U for importer@patchew.org; Thu, 20 Apr 2017 02:42:05 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41016) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d15k0-0004UC-4H for qemu-devel@nongnu.org; Thu, 20 Apr 2017 02:38:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d15jz-0005UF-5Q for qemu-devel@nongnu.org; Thu, 20 Apr 2017 02:38:56 -0400 Received: from [59.151.112.132] (port=35327 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d15jx-0005TG-M1 for qemu-devel@nongnu.org; Thu, 20 Apr 2017 02:38:55 -0400 Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 20 Apr 2017 14:38:50 +0800 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (unknown [10.167.33.80]) by cn.fujitsu.com (Postfix) with ESMTP id B13E647E6342; Thu, 20 Apr 2017 14:38:47 +0800 (CST) Received: from localhost.localdomain (10.167.226.56) by G08CNEXCHPEKD01.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.319.2; Thu, 20 Apr 2017 14:38:46 +0800 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="17962609" From: Zhang Chen To: qemu devel , Jason Wang Date: Thu, 20 Apr 2017 14:39:01 +0800 Message-ID: <1492670346-18004-2-git-send-email-zhangchen.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1492670346-18004-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> References: <1492670346-18004-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.56] X-yoursite-MailScanner-ID: B13E647E6342.ABB6D 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 V2 1/6] net/filter-mirror.c: Add filter-mirror and filter-redirector 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 , bian naimeng , "eddie . dong" , 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" In this patch, we change the send packet format from 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 | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/net/filter-mirror.c b/net/filter-mirror.c index 72fa7c2..5b4d616 100644 --- a/net/filter-mirror.c +++ b/net/filter-mirror.c @@ -23,6 +23,7 @@ #include "sysemu/char.h" #include "qemu/iov.h" #include "qemu/sockets.h" +#include "hw/virtio/virtio-net.h" =20 #define FILTER_MIRROR(obj) \ OBJECT_CHECK(MirrorState, (obj), TYPE_FILTER_MIRROR) @@ -43,12 +44,15 @@ typedef struct MirrorState { SocketReadState rs; } MirrorState; =20 -static int filter_mirror_send(CharBackend *chr_out, +static int filter_mirror_send(MirrorState *s, const struct iovec *iov, int iovcnt) { + NetFilterState *nf =3D NETFILTER(s); + VirtIONet *n =3D qemu_get_nic_opaque(nf->netdev->peer); int ret =3D 0; ssize_t size =3D 0; + ssize_t vnet_hdr_len; uint32_t len =3D 0; char *buf; =20 @@ -58,14 +62,25 @@ static int filter_mirror_send(CharBackend *chr_out, } =20 len =3D htonl(size); - ret =3D qemu_chr_fe_write_all(chr_out, (uint8_t *)&len, sizeof(len)); + ret =3D qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)&len, sizeof(len= )); + if (ret !=3D sizeof(len)) { + goto err; + } + + /* + * We send vnet header len make other module(like colo-compare) + * know how to parse net packet correctly. + */ + vnet_hdr_len =3D n->guest_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; } =20 buf =3D g_malloc(size); iov_to_buf(iov, iovcnt, 0, buf, size); - ret =3D qemu_chr_fe_write_all(chr_out, (uint8_t *)buf, size); + ret =3D qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)buf, size); g_free(buf); if (ret !=3D size) { goto err; @@ -141,7 +156,7 @@ static ssize_t filter_mirror_receive_iov(NetFilterState= *nf, MirrorState *s =3D FILTER_MIRROR(nf); int ret; =20 - ret =3D filter_mirror_send(&s->chr_out, iov, iovcnt); + ret =3D filter_mirror_send(s, iov, iovcnt); if (ret) { error_report("filter_mirror_send failed(%s)", strerror(-ret)); } @@ -164,7 +179,7 @@ static ssize_t filter_redirector_receive_iov(NetFilterS= tate *nf, int ret; =20 if (qemu_chr_fe_get_driver(&s->chr_out)) { - ret =3D filter_mirror_send(&s->chr_out, iov, iovcnt); + ret =3D filter_mirror_send(s, iov, iovcnt); if (ret) { error_report("filter_mirror_send failed(%s)", strerror(-ret)); } --=20 2.7.4