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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729929694; 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: in-reply-to:in-reply-to:references:references; bh=ffucPo4rILqxVbsa3TwhxlnE5gtEFDYiQYy5A7qhXqw=; b=XmBO+sD0nKa2jWGhc/Cq2C35apF807I9paNWX6srq/n3AWx4pzHhhimRVYwm58cKzbN1s9 cOKSge9yVth157gWhj8LGbIJOb9WBlvBcNLf5EESZyn5JFKcuyM4ACYhwAtCSoIzGFi0yz hNqOMC70CZAgosWkCsr68yQyu2ILtdA= X-MC-Unique: _4zbh9h6Op-jjDxf3tTyRw-1 From: Cindy Lu To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v3 1/4] vhost_vdpa : Add a new parameter to enable check mac address Date: Sat, 26 Oct 2024 15:59:59 +0800 Message-ID: <20241026080121.461781-2-lulu@redhat.com> In-Reply-To: <20241026080121.461781-1-lulu@redhat.com> References: <20241026080121.461781-1-lulu@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" When using a VDPA device, it's important to ensure that the MAC address is correctly set. Add a new parameter in qemu cmdline to enable this check, default value is false The usage is: .... -netdev type=3Dvhost-vdpa,vhostdev=3D/dev/vhost-vdpa-0,id=3Dvhost-vdpa0,mac= strickcheck=3Dtrue\ -device virtio-net-pci,netdev=3Dvhost-vdpa0\ .... Signed-off-by: Cindy Lu --- include/net/net.h | 1 + net/vhost-vdpa.c | 4 ++++ qapi/net.json | 5 +++++ 3 files changed, 10 insertions(+) diff --git a/include/net/net.h b/include/net/net.h index c8f679761b..e00651a97b 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -112,6 +112,7 @@ struct NetClientState { bool is_netdev; bool do_not_pad; /* do not pad to the minimum ethernet frame length */ bool is_datapath; + bool check_mac; QTAILQ_HEAD(, NetFilterState) filters; }; =20 diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 46b02c50be..071c3ff065 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -1860,6 +1860,8 @@ int net_init_vhost_vdpa(const Netdev *netdev, const c= har *name, iova_range, features, shared, errp); if (!ncs[i]) goto err; + + ncs[i]->check_mac =3D opts->macstrickcheck; } =20 if (has_cvq) { @@ -1872,6 +1874,8 @@ int net_init_vhost_vdpa(const Netdev *netdev, const c= har *name, errp); if (!nc) goto err; + + nc->check_mac =3D opts->macstrickcheck; } =20 return 0; diff --git a/qapi/net.json b/qapi/net.json index 87fc0d0b28..7d75119858 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -510,6 +510,10 @@ # @queues: number of queues to be created for multiqueue vhost-vdpa # (default: 1) # +# @macstrickcheck: Enable the check for whether the device's MAC address +# and the MAC in QEMU command line are acceptable for booting. +# (default: false) +# # @x-svq: Start device with (experimental) shadow virtqueue. (Since # 7.1) (default: false) # @@ -524,6 +528,7 @@ '*vhostdev': 'str', '*vhostfd': 'str', '*queues': 'int', + '*macstrickcheck': 'bool', '*x-svq': {'type': 'bool', 'features' : [ 'unstable'] } } } =20 ## --=20 2.45.0 From nobody Sat Nov 23 18:08:46 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1729929745; cv=none; d=zohomail.com; s=zohoarc; b=O5/eBK2kJprkRYQOCF9GhrU8/w+MadpkR9S00vz+4Lw7UQ3o5aYWv+Yzr67D57VURxuw2XwGu5N0F3xK9hrJvSNkzakCqdwxJsxuyegBkZBF+vpSvj3/znNLLTRy0pVOCluLecfpXK5eNC7jkE4sdM8IL7N5KbSfS+rWjmDRSsU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1729929745; h=Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; 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Sat, 26 Oct 2024 08:01:34 +0000 (UTC) Received: from server.redhat.com (unknown [10.72.112.45]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 0A5FF1956056; Sat, 26 Oct 2024 08:01:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729929698; 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: in-reply-to:in-reply-to:references:references; bh=4/2ZqJB5iSeur9t5e5e22DREcGHAeMkvdV511PkZJ7s=; b=NBNCwqgsaymI6mrbE10C2aRveqIrVh6JLXS9KGVbuxcildx/NCxZ1dxN+y/oleo2ZaDhrn p+avKDU3x9tpCyhWP8TFWDJmM+yUkU8N4Mfccjj9BcGpWqu//fronX+z2k1Qe6xZOtPkzZ EwmcpqUvBLqWWgHtTnjQRkMUOE14C6c= X-MC-Unique: fOOePJIWM7O3MDutQFKY4w-1 From: Cindy Lu To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v3 2/4] virtio_net: Add the check for vdpa's mac address Date: Sat, 26 Oct 2024 16:00:00 +0800 Message-ID: <20241026080121.461781-3-lulu@redhat.com> In-Reply-To: <20241026080121.461781-1-lulu@redhat.com> References: <20241026080121.461781-1-lulu@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" When using a VDPA device, it is important to ensure that the MAC address is correctly set. The MAC address in the hardware should match the MAC address from the QEMU command line. This is a recommended configuration and will allow the system to boot. Signed-off-by: Cindy Lu --- hw/net/virtio-net.c | 40 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index fb84d142ee..0b342d0cc2 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3589,12 +3589,43 @@ static bool failover_hide_primary_device(DeviceList= ener *listener, /* failover_primary_hidden is set during feature negotiation */ return qatomic_read(&n->failover_primary_hidden); } +static bool virtio_net_check_vdpa_mac(NetClientState *nc, VirtIONet *n, + MACAddr *cmdline_mac, Error **errp) +{ + struct virtio_net_config hwcfg =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 *)&hwcfg, ETH_A= LEN); + + /*For VDPA device following situations are acceptable:*/ + + if (memcmp(&hwcfg.mac, &zero, sizeof(MACAddr)) !=3D 0) { + /* + * 1.The hardware MAC address is the same as the QEMU command line= MAC + * address, and both of them are not 0. + */ + if ((memcmp(&hwcfg.mac, cmdline_mac, sizeof(MACAddr)) =3D=3D 0)) { + return true; + } + } =20 + error_setg(errp, + "vDPA device's mac %02x:%02x:%02x:%02x:%02x:%02x" + "not same with the cmdline's mac %02x:%02x:%02x:%02x:%02x:%= 02x," + "Please check.", + hwcfg.mac[0], hwcfg.mac[1], hwcfg.mac[2], hwcfg.mac[3], + hwcfg.mac[4], hwcfg.mac[5], cmdline_mac->a[0], cmdline_mac-= >a[1], + cmdline_mac->a[2], cmdline_mac->a[3], cmdline_mac->a[4], + cmdline_mac->a[5]); + + return false; +} static void virtio_net_device_realize(DeviceState *dev, Error **errp) { VirtIODevice *vdev =3D VIRTIO_DEVICE(dev); VirtIONet *n =3D VIRTIO_NET(dev); NetClientState *nc; + MACAddr macaddr_cmdline; int i; =20 if (n->net_conf.mtu) { @@ -3702,6 +3733,7 @@ static void virtio_net_device_realize(DeviceState *de= v, Error **errp) virtio_net_add_queue(n, 0); =20 n->ctrl_vq =3D virtio_add_queue(vdev, 64, virtio_net_handle_ctrl); + memcpy(&macaddr_cmdline, &n->nic_conf.macaddr, sizeof(n->mac)); qemu_macaddr_default_if_unset(&n->nic_conf.macaddr); memcpy(&n->mac[0], &n->nic_conf.macaddr, sizeof(n->mac)); n->status =3D VIRTIO_NET_S_LINK_UP; @@ -3748,7 +3780,13 @@ static void virtio_net_device_realize(DeviceState *d= ev, Error **errp) nc =3D qemu_get_queue(n->nic); nc->rxfilter_notify_enabled =3D 1; =20 - if (nc->peer && nc->peer->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDP= A) { + if (nc->peer && (nc->peer->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_V= DPA)) { + if (nc->peer->check_mac) { + if (!virtio_net_check_vdpa_mac(nc, n, &macaddr_cmdline, errp))= { + virtio_cleanup(vdev); + return; + } + } struct virtio_net_config netcfg =3D {}; memcpy(&netcfg.mac, &n->nic_conf.macaddr, ETH_ALEN); vhost_net_set_config(get_vhost_net(nc->peer), --=20 2.45.0 From nobody Sat Nov 23 18:08:46 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; 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Sat, 26 Oct 2024 08:01:38 +0000 (UTC) Received: from server.redhat.com (unknown [10.72.112.45]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 65C921956056; Sat, 26 Oct 2024 08:01:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729929705; 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: in-reply-to:in-reply-to:references:references; bh=gKlkXYheZX/iFDeiLoZ2HpXGEX2BvApxquUOpmEpCrc=; b=ABgCoBbLrAceEcf3BbgDClbFCDe36jrHseciIBLFIsudMetE3D4qbFv2EbAjLC08QDJDI/ i1m2ylaE/WEuvRA3/CjfMqnZ4qlqeX364Mxi2U3RiouohfZHDakYQ1u7y+P0q8D/Yqlqg9 NQt2F36zjfsMiHOwE6rHC4PvN+/ib40= X-MC-Unique: v1Y5pS37OriOjqjCOT1rxw-1 From: Cindy Lu To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v3 3/4] virtio_net: Add the 2rd acceptable situation for Mac setup. Date: Sat, 26 Oct 2024 16:00:01 +0800 Message-ID: <20241026080121.461781-4-lulu@redhat.com> In-Reply-To: <20241026080121.461781-1-lulu@redhat.com> References: <20241026080121.461781-1-lulu@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 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=lulu@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.454, 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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: 1729929723456116600 Content-Type: text/plain; charset="utf-8" When using a VDPA device, the following situations are also acceptable: the hardware MAC address is not 0, and the MAC address in the QEMU command line is 0. Signed-off-by: Cindy Lu --- hw/net/virtio-net.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 0b342d0cc2..6900e3c44b 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3607,6 +3607,20 @@ static bool virtio_net_check_vdpa_mac(NetClientState= *nc, VirtIONet *n, if ((memcmp(&hwcfg.mac, cmdline_mac, sizeof(MACAddr)) =3D=3D 0)) { return true; } + /* + * 2.The hardware MAC address is NOT 0, + * and the MAC address in the QEMU command line is 0. + * In this situation, Here we use the hardware MAC address overwr= ite + * the QEMU command line address(is 0) in VirtIONet->mac[0]. + * in the follwoing process, QEMU will use this mac in VirtIONet = and + * finish the bring up + */ + if (memcmp(cmdline_mac, &zero, sizeof(MACAddr)) =3D=3D 0) { + /* overwrite the mac address with hardware address*/ + memcpy(&n->mac[0], &hwcfg.mac, sizeof(n->mac)); + memcpy(&n->nic_conf.macaddr, &hwcfg.mac, sizeof(n->mac)); + return true; + } } =20 error_setg(errp, --=20 2.45.0 From nobody Sat Nov 23 18:08:46 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1729929771; cv=none; d=zohomail.com; s=zohoarc; b=JwUhs5hpVfI9koDGTom0vlCy2fcMGZWx1qwGj6gb+Lq0yYeTIEMWqcBOELdNABL35469GgDkWoC7Shb3zSvl8ZPv/biEv8irRxerbA/CFFJBGOu5LaYMhTNdEKdBoGHY7aRugjcl3EsIlHbOVKnpbHCzWTm+jnyZSpWATMZ59gE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1729929771; h=Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; bh=IFxKPQmNQJxhJnDDuLXR6xxKpCSZvmkENCkFMxpimjo=; b=k8ShNrUVHV/lGdiFPUUpQjB6IfcSCW4WNCyfhcZmVN/SHUU4R8T+W+ycPsY4O4CZucqkuD9jTmTLOFURNw69l7QmPgak7tIsQuoSt8vVIubrMUN/ZKk2n+ZKzgmGNcKR/sBFXmzw5b//sYBOCmS6jEYlcapm5WjUfH714R5qdGc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1729929771143903.6154871475748; Sat, 26 Oct 2024 01:02:51 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t4bkR-00046s-62; Sat, 26 Oct 2024 04:02:11 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t4bkO-00046L-WF for qemu-devel@nongnu.org; Sat, 26 Oct 2024 04:02:09 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t4bkN-0000lU-Av for qemu-devel@nongnu.org; Sat, 26 Oct 2024 04:02:08 -0400 Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-315-TWmcXlUuOjmvKwL8asOIsw-1; Sat, 26 Oct 2024 04:02:04 -0400 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3246019560BA for ; Sat, 26 Oct 2024 08:02:04 +0000 (UTC) Received: from server.redhat.com (unknown [10.72.112.45]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 0532019560A3; Sat, 26 Oct 2024 08:02:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729929726; 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: in-reply-to:in-reply-to:references:references; bh=IFxKPQmNQJxhJnDDuLXR6xxKpCSZvmkENCkFMxpimjo=; b=WmEuUigZ8pKhIMa2EsPK80t50xZnuUDo3dH+5WzNFdI0InTHjmj+69Bdvz5QebHtuItJmU 17LMTYMDf+t2i9oikX/TaEn0IRPJo8plCt2DBtOO3tLErM1l4IrDDTsix++gbXRtubuaR9 h5fD8YB67C1a9fTat/4RwBVRVO6z7Hw= X-MC-Unique: TWmcXlUuOjmvKwL8asOIsw-1 From: Cindy Lu To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v3 4/4] virtio_net: Add the 3rd acceptable situation for Mac setup. Date: Sat, 26 Oct 2024 16:00:02 +0800 Message-ID: <20241026080121.461781-5-lulu@redhat.com> In-Reply-To: <20241026080121.461781-1-lulu@redhat.com> References: <20241026080121.461781-1-lulu@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 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: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.454, 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=-1.697, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: 1729929771685116600 Content-Type: text/plain; charset="utf-8" While the hardware MAC address is 0 and the MAC address in the QEMU command line is also 0, this configuration is acceptable. Signed-off-by: Cindy Lu --- hw/net/virtio-net.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 6900e3c44b..1e6a31baf8 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3622,6 +3622,19 @@ static bool virtio_net_check_vdpa_mac(NetClientState= *nc, VirtIONet *n, return true; } } + /* + * 3.The hardware MAC address is 0, + * and the MAC address in the QEMU command line is also 0. + * In this situation, qemu will generate a random mac address + * QEMU will try to use CVQ/set_config to set this address to + * device + */ + if ((memcmp(&hwcfg.mac, &zero, sizeof(MACAddr)) =3D=3D 0) && + (memcmp(cmdline_mac, &zero, sizeof(MACAddr)) =3D=3D 0)) { + memcpy(&n->mac[0], &n->nic_conf.macaddr, sizeof(n->mac)); + + return true; + } =20 error_setg(errp, "vDPA device's mac %02x:%02x:%02x:%02x:%02x:%02x" --=20 2.45.0