virtio_net: add software timestamp support

This patch enables the use of software timestamping via the virtio_net
driver.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 11e2e81..9bd71d5 100644 (file)
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -925,6 +925,9 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
        /* Free up any pending old buffers before queueing new ones. */
        free_old_xmit_skbs(sq);
 
+       /* timestamp packet in software */
+       skb_tx_timestamp(skb);
+
        /* Try to transmit */
        err = xmit_skb(sq, skb);
 
@@ -1376,6 +1379,7 @@ static const struct ethtool_ops virtnet_ethtool_ops = {
        .get_ringparam = virtnet_get_ringparam,
        .set_channels = virtnet_set_channels,
        .get_channels = virtnet_get_channels,
+       .get_ts_info = ethtool_op_get_ts_info,
 };
 
 #define MIN_MTU 68