From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: [PATCH v5 33/45] virtio_net: disable mac write for virtio 1.0 Date: Thu, 27 Nov 2014 14:32:49 +0200 Message-ID: <1417091078-24611-34-git-send-email-mst@redhat.com> References: <1417091078-24611-1-git-send-email-mst@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: David Miller , cornelia.huck@de.ibm.com, rusty@au1.ibm.com, nab@linux-iscsi.org, pbonzini@redhat.com, thuth@linux.vnet.ibm.com, dahi@linux.vnet.ibm.com, Rusty Russell , virtualization@lists.linux-foundation.org, netdev@vger.kernel.org To: linux-kernel@vger.kernel.org Return-path: Content-Disposition: inline In-Reply-To: <1417091078-24611-1-git-send-email-mst@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org The spec states that mac in config space is only driver-writable in the legacy case. Fence writing it in virtnet_set_mac_address() in the virtio 1.0 case. Suggested-by: Cornelia Huck Signed-off-by: Michael S. Tsirkin --- drivers/net/virtio_net.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index c6a72d3..9ab3c50 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1030,7 +1030,8 @@ static int virtnet_set_mac_address(struct net_device *dev, void *p) "Failed to set mac address by vq command.\n"); return -EINVAL; } - } else if (virtio_has_feature(vdev, VIRTIO_NET_F_MAC)) { + } else if (virtio_has_feature(vdev, VIRTIO_NET_F_MAC) && + !virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) { unsigned int i; /* Naturally, this has an atomicity problem. */ -- MST