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Tsirkin" , Hawkins Jiawei , Dragos Tatulea , Gautam Dawar , si-wei.liu@oracle.com, Zhu Lingshan , Jason Wang , Parav Pandit , Cindy Lu Subject: [PATCH v3 4/5] vdpa: move vhost_vdpa_set_vring_ready to the caller Date: Tue, 22 Aug 2023 10:53:29 +0200 Message-Id: <20230822085330.3978829-5-eperezma@redhat.com> In-Reply-To: <20230822085330.3978829-1-eperezma@redhat.com> References: <20230822085330.3978829-1-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 10.11.54.2 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=170.10.129.124; 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_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: 2.1.29 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: 1692694508006100003 Doing that way allows CVQ to be enabled before the dataplane vqs, restoring the state as MQ or MAC addresses properly in the case of a migration. The patch does it by defining a ->load NetClientInfo callback also for dataplane. Ideally, this should be done by an independent patch, but the function is already static so it would only add an empty vhost_vdpa_net_data_load stub. Signed-off-by: Eugenio P=C3=A9rez Acked-by: Jason Wang --- v3: * Fix subject typo * Expand patch message so it explains why --- hw/virtio/vdpa-dev.c | 3 +++ hw/virtio/vhost-vdpa.c | 3 --- net/vhost-vdpa.c | 57 +++++++++++++++++++++++++++++------------- 3 files changed, 42 insertions(+), 21 deletions(-) diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c index 363b625243..f22d5d5bc0 100644 --- a/hw/virtio/vdpa-dev.c +++ b/hw/virtio/vdpa-dev.c @@ -255,6 +255,9 @@ static int vhost_vdpa_device_start(VirtIODevice *vdev, = Error **errp) error_setg_errno(errp, -ret, "Error starting vhost"); goto err_guest_notifiers; } + for (i =3D 0; i < s->dev.nvqs; ++i) { + vhost_vdpa_set_vring_ready(&s->vdpa, i); + } s->started =3D true; =20 /* diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 0d9975b5b5..8ca2e3800c 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -1297,9 +1297,6 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev= , bool started) if (unlikely(!ok)) { return -1; } - for (int i =3D 0; i < dev->nvqs; ++i) { - vhost_vdpa_set_vring_ready(v, dev->vq_index + i); - } } else { vhost_vdpa_suspend(dev); vhost_vdpa_svqs_stop(dev); diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 9251351b4b..3bf60f9431 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -371,6 +371,22 @@ static int vhost_vdpa_net_data_start(NetClientState *n= c) return 0; } =20 +static int vhost_vdpa_net_data_load(NetClientState *nc) +{ + VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); + struct vhost_vdpa *v =3D &s->vhost_vdpa; + bool has_cvq =3D v->dev->vq_index_end % 2; + + if (has_cvq) { + return 0; + } + + for (int i =3D 0; i < v->dev->nvqs; ++i) { + vhost_vdpa_set_vring_ready(v, i + v->dev->vq_index); + } + return 0; +} + static void vhost_vdpa_net_client_stop(NetClientState *nc) { VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); @@ -393,6 +409,7 @@ static NetClientInfo net_vhost_vdpa_info =3D { .size =3D sizeof(VhostVDPAState), .receive =3D vhost_vdpa_receive, .start =3D vhost_vdpa_net_data_start, + .load =3D vhost_vdpa_net_data_load, .stop =3D vhost_vdpa_net_client_stop, .cleanup =3D vhost_vdpa_cleanup, .has_vnet_hdr =3D vhost_vdpa_has_vnet_hdr, @@ -974,26 +991,30 @@ static int vhost_vdpa_net_cvq_load(NetClientState *nc) =20 assert(nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); =20 - if (!v->shadow_vqs_enabled) { - return 0; - } + vhost_vdpa_set_vring_ready(v, v->dev->vq_index); =20 - n =3D VIRTIO_NET(v->dev->vdev); - r =3D vhost_vdpa_net_load_mac(s, n); - if (unlikely(r < 0)) { - return r; - } - r =3D vhost_vdpa_net_load_mq(s, n); - if (unlikely(r)) { - return r; - } - r =3D vhost_vdpa_net_load_offloads(s, n); - if (unlikely(r)) { - return r; + if (v->shadow_vqs_enabled) { + n =3D VIRTIO_NET(v->dev->vdev); + r =3D vhost_vdpa_net_load_mac(s, n); + if (unlikely(r < 0)) { + return r; + } + r =3D vhost_vdpa_net_load_mq(s, n); + if (unlikely(r)) { + return r; + } + r =3D vhost_vdpa_net_load_offloads(s, n); + if (unlikely(r)) { + return r; + } + r =3D vhost_vdpa_net_load_rx(s, n); + if (unlikely(r)) { + return r; + } } - r =3D vhost_vdpa_net_load_rx(s, n); - if (unlikely(r)) { - return r; + + for (int i =3D 0; i < v->dev->vq_index; ++i) { + vhost_vdpa_set_vring_ready(v, i); } =20 return 0; --=20 2.39.3