diff mbox series

virtio_net: use LE accessors for speed/duplex

Message ID 20200805133843.1105808-1-mst@redhat.com
State New
Headers show
Series virtio_net: use LE accessors for speed/duplex | expand

Commit Message

Michael S. Tsirkin Aug. 5, 2020, 1:38 p.m. UTC 
Speed and duplex config fields depend on VIRTIO_NET_F_SPEED_DUPLEX
which being 63>31 depends on VIRTIO_F_VERSION_1.

Accordingly, use LE accessors for these fields.

Reported-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 drivers/net/virtio_net.c        | 9 +++++----
 include/uapi/linux/virtio_net.h | 2 +-
 2 files changed, 6 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index ba38765dc490..0934b1ec5320 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2264,12 +2264,13 @@  static void virtnet_update_settings(struct virtnet_info *vi)
 	if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_SPEED_DUPLEX))
 		return;
 
-	speed = virtio_cread32(vi->vdev, offsetof(struct virtio_net_config,
-						  speed));
+	virtio_cread_le(vi->vdev, struct virtio_net_config, speed, &speed);
+
 	if (ethtool_validate_speed(speed))
 		vi->speed = speed;
-	duplex = virtio_cread8(vi->vdev, offsetof(struct virtio_net_config,
-						  duplex));
+
+	virtio_cread_le(vi->vdev, struct virtio_net_config, duplex, &duplex);
+
 	if (ethtool_validate_duplex(duplex))
 		vi->duplex = duplex;
 }
diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index 27d996f29dd1..3f55a4215f11 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -99,7 +99,7 @@  struct virtio_net_config {
 	 * speed, in units of 1Mb. All values 0 to INT_MAX are legal.
 	 * Any other value stands for unknown.
 	 */
-	__virtio32 speed;
+	__le32 speed;
 	/*
 	 * 0x00 - half duplex
 	 * 0x01 - full duplex