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bh=VetRo+0BKe9xyEK8yuAfA4AJjKiZmn+zmiMLp+Fzc74=; b=fFPurX1hen2LsZ8cUrZ5mgIVRn5vnfb4HdA9CpA+BR95x4fB8PllZEub5YA5hqyDDFRmB4 PBJ6ZULr5bGucWZhp/3/3tokJM0E1W29aRlgbKvoY8Pb+JdCyiVzZiNzAM0gjPIaxMtwW2 zXDCOOoidUbSG4NbOMclOeNbmFtdetg= X-MC-Unique: 1FGdS7b7P2iYSOKUeJoUjw-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [RFC v3 04/29] vhost: Add x-vhost-enable-shadow-vq qmp Date: Wed, 19 May 2021 18:28:38 +0200 Message-Id: <20210519162903.1172366-5-eperezma@redhat.com> In-Reply-To: <20210519162903.1172366-1-eperezma@redhat.com> References: <20210519162903.1172366-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.39, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Parav Pandit , "Michael S. Tsirkin" , Jason Wang , Juan Quintela , Markus Armbruster , virtualization@lists.linux-foundation.org, Harpreet Singh Anand , Xiao W Wang , Stefan Hajnoczi , Eli Cohen , Michael Lilja , Stefano Garzarella Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Command to enable shadow virtqueue looks like: { "execute": "x-vhost-enable-shadow-vq", "arguments": { "name": "dev0", "enable": true } } Signed-off-by: Eugenio P=C3=A9rez --- qapi/net.json | 22 ++++++++++++++++++++++ hw/virtio/vhost.c | 6 ++++++ 2 files changed, 28 insertions(+) diff --git a/qapi/net.json b/qapi/net.json index c31748c87f..660feafdd2 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -77,6 +77,28 @@ ## { 'command': 'netdev_del', 'data': {'id': 'str'} } =20 +## +# @x-vhost-enable-shadow-vq: +# +# Use vhost shadow virtqueue. +# +# @name: the device name of the VirtIO device +# +# @enable: true to use he alternate shadow VQ notification path +# +# Returns: Error if failure, or 'no error' for success. Not found if vhost= is not enabled. +# +# Since: 6.1 +# +# Example: +# +# -> { "execute": "x-vhost-enable-shadow-vq", "arguments": { "name": "virt= io-net", "enable": false } } +# +## +{ 'command': 'x-vhost-enable-shadow-vq', + 'data': {'name': 'str', 'enable': 'bool'}, + 'if': 'defined(CONFIG_VHOST_KERNEL)' } + ## # @NetLegacyNicOptions: # diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 40f9f64ebd..c4c1f80661 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -15,6 +15,7 @@ =20 #include "qemu/osdep.h" #include "qapi/error.h" +#include "qapi/qapi-commands-net.h" #include "hw/virtio/vhost.h" #include "qemu/atomic.h" #include "qemu/range.h" @@ -1831,3 +1832,8 @@ int vhost_net_set_backend(struct vhost_dev *hdev, =20 return -1; } + +void qmp_x_vhost_enable_shadow_vq(const char *name, bool enable, Error **e= rrp) +{ + error_setg(errp, "Shadow virtqueue still not implemented"); +} --=20 2.27.0