From patchwork Thu Feb 25 16:55:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Cindy Lu X-Patchwork-Id: 1444541 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=inMS1GkF; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4Dmf7v2h8rz9sBJ for ; Fri, 26 Feb 2021 03:56:27 +1100 (AEDT) Received: from localhost ([::1]:47138 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lFJw7-0008Ox-IR for incoming@patchwork.ozlabs.org; Thu, 25 Feb 2021 11:56:25 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42990) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lFJvA-0008Mf-J2 for qemu-devel@nongnu.org; Thu, 25 Feb 2021 11:55:24 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:30155) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1lFJv8-0004L5-MH for qemu-devel@nongnu.org; Thu, 25 Feb 2021 11:55:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614272122; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ts8/6AW1C0fMfD6EEERr/r95bnaSqwoK6ohlyXWos6Y=; b=inMS1GkFeks0WocffZpABadu6mJ006BpwJeV7dWi8qYPTazS+cacPgHVv5oPgHYm2OKoog XMqGNaQic+D5k6hvyrO5v5vF8rn2sOeYupKwP/eEMI2HyX8eHTKHFAOv3MczC0ZcNgl8Xp b48i/fiM7MG+9ZokK98VWbqPuSh80mU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-247-gjP552y3PcWPg8UeaBMWew-1; Thu, 25 Feb 2021 11:55:19 -0500 X-MC-Unique: gjP552y3PcWPg8UeaBMWew-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8955318C35C1 for ; Thu, 25 Feb 2021 16:55:18 +0000 (UTC) Received: from laptop.redhat.com (ovpn-12-46.pek2.redhat.com [10.72.12.46]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5B7A260861; Thu, 25 Feb 2021 16:55:16 +0000 (UTC) From: Cindy Lu To: mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v5 1/1] virtio-net: Add check for mac address while peer is vdpa Date: Fri, 26 Feb 2021 00:55:06 +0800 Message-Id: <20210225165506.18321-2-lulu@redhat.com> In-Reply-To: <20210225165506.18321-1-lulu@redhat.com> References: <20210225165506.18321-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lulu@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=lulu@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, RCVD_IN_MSPIKE_H3=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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: eperezma@redhat.com, amorenoz@redhat.com, lulu@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" While peer is vdpa, sometime qemu get an all zero mac address from the hardware, This is not a legal value. Add the check for this.if we get an zero mac address. qemu will use the default mac address or the mac address from qemu cmdline Signed-off-by: Cindy Lu Tested-by: Adrián Moreno --- hw/net/virtio-net.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 9179013ac4..8f36ca5066 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -126,6 +126,7 @@ static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config) VirtIONet *n = VIRTIO_NET(vdev); struct virtio_net_config netcfg; NetClientState *nc = qemu_get_queue(n->nic); + static const MACAddr zero = { .a = { 0, 0, 0, 0, 0, 0 } }; int ret = 0; memset(&netcfg, 0 , sizeof(struct virtio_net_config)); @@ -151,6 +152,15 @@ static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config) ret = vhost_net_get_config(get_vhost_net(nc->peer), (uint8_t *)&netcfg, n->config_size); if (ret != -1) { + /* + * Here is a work around, the 0 mac address is not a legal value. + * if we got this from hardware, qemu will use the mac address + * saved in VirtIONet->mac. + */ + if (memcmp(&netcfg.mac, &zero, sizeof(zero)) == 0) { + info_report("Get an all zero mac address from hardware"); + memcpy(netcfg.mac, n->mac, ETH_ALEN); + } memcpy(config, &netcfg, n->config_size); } }