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Tsirkin" , Harpreet Singh Anand , Stefan Hajnoczi , Zhu Lingshan , Cindy Lu , Gautam Dawar , Paolo Bonzini , Eli Cohen , "Gonglei (Arei)" , Liuxiangdong , Laurent Vivier , Stefano Garzarella Subject: [PATCH v3 2/6] vdpa: extract vhost_vdpa_net_load_mac from vhost_vdpa_net_load Date: Thu, 25 Aug 2022 21:03:52 +0200 Message-Id: <20220825190356.317527-3-eperezma@redhat.com> In-Reply-To: <20220825190356.317527-1-eperezma@redhat.com> References: <20220825190356.317527-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.85 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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1661455142315100001 Since there may be many commands we need to issue to load the NIC state, let's split them in individual functions Signed-off-by: Eugenio P=C3=A9rez -- v2: Add vhost_vdpa_net_load_cmd helper v3: Move ctrl header definition to vhost_vdpa_net_load_cmd --- net/vhost-vdpa.c | 62 +++++++++++++++++++++++++++++++----------------- 1 file changed, 40 insertions(+), 22 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 535315c1d0..e799e744cd 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -365,12 +365,47 @@ static ssize_t vhost_vdpa_net_cvq_add(VhostVDPAState = *s, size_t out_len, return vhost_svq_poll(svq); } =20 +static ssize_t vhost_vdpa_net_load_cmd(VhostVDPAState *s, uint8_t class, + uint8_t cmd, const void *data, + size_t data_size) +{ + const struct virtio_net_ctrl_hdr ctrl =3D { + .class =3D class, + .cmd =3D cmd, + }; + + assert(data_size < vhost_vdpa_net_cvq_cmd_page_len() - sizeof(ctrl)); + + memcpy(s->cvq_cmd_out_buffer, &ctrl, sizeof(ctrl)); + memcpy(s->cvq_cmd_out_buffer + sizeof(ctrl), data, data_size); + + return vhost_vdpa_net_cvq_add(s, sizeof(ctrl) + data_size, + sizeof(virtio_net_ctrl_ack)); +} + +static int vhost_vdpa_net_load_mac(VhostVDPAState *s, const VirtIONet *n) +{ + uint64_t features =3D n->parent_obj.guest_features; + if (features & BIT_ULL(VIRTIO_NET_F_CTRL_MAC_ADDR)) { + ssize_t dev_written =3D vhost_vdpa_net_load_cmd(s, VIRTIO_NET_CTRL= _MAC, + VIRTIO_NET_CTRL_MAC_ADDR= _SET, + n->mac, sizeof(n->mac)); + if (unlikely(dev_written < 0)) { + return dev_written; + } + + return *s->status !=3D VIRTIO_NET_OK; + } + + return 0; +} + static int vhost_vdpa_net_load(NetClientState *nc) { VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); - const struct vhost_vdpa *v =3D &s->vhost_vdpa; + struct vhost_vdpa *v =3D &s->vhost_vdpa; const VirtIONet *n; - uint64_t features; + int r; =20 assert(nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); =20 @@ -379,26 +414,9 @@ static int vhost_vdpa_net_load(NetClientState *nc) } =20 n =3D VIRTIO_NET(v->dev->vdev); - features =3D n->parent_obj.guest_features; - if (features & BIT_ULL(VIRTIO_NET_F_CTRL_MAC_ADDR)) { - const struct virtio_net_ctrl_hdr ctrl =3D { - .class =3D VIRTIO_NET_CTRL_MAC, - .cmd =3D VIRTIO_NET_CTRL_MAC_ADDR_SET, - }; - char *cursor =3D s->cvq_cmd_out_buffer; - ssize_t dev_written; - - memcpy(cursor, &ctrl, sizeof(ctrl)); - cursor +=3D sizeof(ctrl); - memcpy(cursor, n->mac, sizeof(n->mac)); - - dev_written =3D vhost_vdpa_net_cvq_add(s, sizeof(ctrl) + sizeof(n-= >mac), - sizeof(virtio_net_ctrl_ack)); - if (unlikely(dev_written < 0)) { - return dev_written; - } - - return *s->status !=3D VIRTIO_NET_OK; + r =3D vhost_vdpa_net_load_mac(s, n); + if (unlikely(r < 0)) { + return r; } =20 return 0; --=20 2.31.1