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Tsirkin" , Gautam Dawar , Jason Wang , Parav Pandit , Laurent Vivier , Si-Wei Liu , Harpreet Singh Anand , Liuxiangdong , Cindy Lu Subject: [PATCH v3 3/4] vdpa: handle VIRTIO_NET_CTRL_ANNOUNCE in vhost_vdpa_net_handle_ctrl_avail Date: Wed, 21 Dec 2022 12:50:14 +0100 Message-Id: <20221221115015.1400889-4-eperezma@redhat.com> In-Reply-To: <20221221115015.1400889-1-eperezma@redhat.com> References: <20221221115015.1400889-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 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: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1671623491520100011 Since this capability is emulated by qemu shadowed CVQ cannot forward it to the device. Process all that command within qemu. Signed-off-by: Eugenio P=C3=A9rez Acked-by: Jason Wang --- net/vhost-vdpa.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 260e474863..0b0712cd8a 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -489,9 +489,18 @@ static int vhost_vdpa_net_handle_ctrl_avail(VhostShado= wVirtqueue *svq, out.iov_len =3D iov_to_buf(elem->out_sg, elem->out_num, 0, s->cvq_cmd_out_buffer, vhost_vdpa_net_cvq_cmd_len()); - dev_written =3D vhost_vdpa_net_cvq_add(s, out.iov_len, sizeof(status)); - if (unlikely(dev_written < 0)) { - goto out; + if (*(uint8_t *)s->cvq_cmd_out_buffer =3D=3D VIRTIO_NET_CTRL_ANNOUNCE)= { + /* + * Guest announce capability is emulated by qemu, so don't forward= to + * the device. + */ + dev_written =3D sizeof(status); + *s->status =3D VIRTIO_NET_OK; + } else { + dev_written =3D vhost_vdpa_net_cvq_add(s, out.iov_len, sizeof(stat= us)); + if (unlikely(dev_written < 0)) { + goto out; + } } =20 if (unlikely(dev_written < sizeof(status))) { --=20 2.31.1