From mboxrd@z Thu Jan 1 00:00:00 1970 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 From: Wei Wang Date: Mon, 19 Dec 2016 19:05:53 +0800 Message-Id: <1482145554-88823-3-git-send-email-wei.w.wang@intel.com> 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> Subject: [Qemu-devel] [PATCH v3 2/3] spec/vhost-user: add VHOST_USER_PROTOCOL_F_SET_DEVICE_ID List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: marcandre.lureau@gmail.com, mst@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, virtio-comment@lists.oasis-open.org Cc: Wei Wang 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 -- 2.7.4