From patchwork Mon Dec 19 11:05:53 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wang, Wei W" X-Patchwork-Id: 9480105 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A3EA6606DB for ; Mon, 19 Dec 2016 11:10:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9D1012844A for ; Mon, 19 Dec 2016 11:10:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 901942847B; Mon, 19 Dec 2016 11:10:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 1B45E2844A for ; Mon, 19 Dec 2016 11:10:57 +0000 (UTC) Received: from localhost ([::1]:44612 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cIvqK-0006JO-5g for patchwork-qemu-devel@patchwork.kernel.org; Mon, 19 Dec 2016 06:10:56 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56643) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cIvml-0003NM-3m for qemu-devel@nongnu.org; Mon, 19 Dec 2016 06:07:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cIvmf-0001bB-NO for qemu-devel@nongnu.org; Mon, 19 Dec 2016 06:07:14 -0500 Received: from mga07.intel.com ([134.134.136.100]:17693) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cIvmf-0001Zz-Ep for qemu-devel@nongnu.org; Mon, 19 Dec 2016 06:07:09 -0500 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP; 19 Dec 2016 03:07:08 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.33,373,1477983600"; d="scan'208"; a="1073938903" Received: from devel-ww.sh.intel.com ([10.239.48.105]) by orsmga001.jf.intel.com with ESMTP; 19 Dec 2016 03:07:06 -0800 From: Wei Wang To: marcandre.lureau@gmail.com, mst@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, virtio-comment@lists.oasis-open.org Date: Mon, 19 Dec 2016 19:05:53 +0800 Message-Id: <1482145554-88823-3-git-send-email-wei.w.wang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1482145554-88823-1-git-send-email-wei.w.wang@intel.com> References: <1482145554-88823-1-git-send-email-wei.w.wang@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.100 Subject: [Qemu-devel] [PATCH v3 2/3] spec/vhost-user: add VHOST_USER_PROTOCOL_F_SET_DEVICE_ID 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: Wei Wang Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP The VHOST_USER_PROTOCOL_F_SET_DEVICE_ID protocol feature indicates that the slave side implementation supports different types of devices. The master tells the slave what type of device to create by sending a VHOST_USER_SET_DEVICE_ID message. Signed-off-by: Wei Wang --- docs/specs/vhost-user.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/docs/specs/vhost-user.txt b/docs/specs/vhost-user.txt index 18e49d0..80dcfc1 100644 --- a/docs/specs/vhost-user.txt +++ b/docs/specs/vhost-user.txt @@ -267,6 +267,7 @@ Protocol features #define VHOST_USER_PROTOCOL_F_RARP 2 #define VHOST_USER_PROTOCOL_F_REPLY_ACK 3 #define VHOST_USER_PROTOCOL_F_VHOST_PCI 4 +#define VHOST_USER_PROTOCOL_F_SET_DEVICE_ID 5 Message types ------------- @@ -479,6 +480,16 @@ Message types The first 6 bytes of the payload contain the mac address of the guest to allow the vhost user backend to construct and broadcast the fake RARP. + * VHOST_USER_SET_DEVICE_ID + Id: 20 + Equivalent ioctl: N/A + Master payload: u64 + + The master sends the virtio device id to the slave. The virtio device id + indicates the device type of the master device. + This request should be sent only when VHOST_USER_PROTOCOL_F_SET_DEVICE_ID + has been negotiated. + VHOST_USER_PROTOCOL_F_REPLY_ACK: ------------------------------- The original vhost-user specification only demands replies for certain