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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1720492051; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=gvi+Fzbmkqp0o66XfH2AQrFZSd8YQeaB51jk5qbux7E=; b=FCU5B/CfbjacfGqfdgFAaZMotTIsbvVROsaR+f+r4MoqZ+g1G1O5+okSJjSPFzwF6/A5ul LPquTkSewEM77A0nm16FTle0A1jOZitdM90KrL+KeV3JZnaU/0gQ0QnSWs5Y3HzdjS7hk3 kpDbUv0OatYEMgKZn18OKd9b0Haf1c4= X-MC-Unique: CE5yISMYPlK3Ks91fPvP3A-1 From: Cindy Lu To: lulu@redhat.com, dtatulea@nvidia.com, mst@redhat.com, jasowang@redhat.com, parav@nvidia.com, qemu-devel@nongnu.org Subject: [RFC] virtio-net: check the mac address for vdpa device Date: Tue, 9 Jul 2024 10:27:07 +0800 Message-ID: <20240709022707.579474-1-lulu@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 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=lulu@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.142, 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: 1720492110998100003 Content-Type: text/plain; charset="utf-8" When using VDPA device, we should verify whether the MAC address in the hardware matches the MAC address from the QEMU command line. If not, we will need to update the related information. Signed-off-by: Cindy Lu --- hw/net/virtio-net.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 9c7e85caea..db04331b82 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3739,10 +3739,17 @@ static void virtio_net_device_realize(DeviceState *= dev, Error **errp) nc->rxfilter_notify_enabled =3D 1; =20 if (nc->peer && nc->peer->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDP= A) { - struct virtio_net_config netcfg =3D {}; - memcpy(&netcfg.mac, &n->nic_conf.macaddr, ETH_ALEN); - vhost_net_set_config(get_vhost_net(nc->peer), - (uint8_t *)&netcfg, 0, ETH_ALEN, VHOST_SET_CONFIG_TYPE_FRONTEN= D); + struct virtio_net_config netcfg =3D {}; + static const MACAddr zero =3D {.a =3D {0, 0, 0, 0, 0, 0}}; + vhost_net_get_config(get_vhost_net(nc->peer), (uint8_t *)&netcfg, + ETH_ALEN); + if ((memcmp(&netcfg.mac, &n->nic_conf.macaddr, sizeof(MACAddr)) !=3D = 0) && + memcmp(&netcfg.mac, &zero, sizeof(zero) !=3D 0)) { + memcpy(&n->nic_conf.macaddr, &netcfg.mac, sizeof(MACAddr)); + memcpy(&n->mac[0], &netcfg.mac, sizeof(MACAddr)); + } + vhost_net_set_config(get_vhost_net(nc->peer), (uint8_t *)&netcfg, 0, + ETH_ALEN, VHOST_SET_CONFIG_TYPE_FRONTEND); } QTAILQ_INIT(&n->rsc_chains); n->qdev =3D dev; --=20 2.45.0