enetc: add software timestamping

Provide a software TX timestamp and add it to the ethtool query
interface.

skb_tx_timestamp() is also needed if one would like to use PHY
timestamping.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index 1773990..2ee4a2c 100644 (file)
--- a/drivers/net/ethernet/freescale/enetc/enetc.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
@@ -227,6 +227,8 @@ static int enetc_map_tx_buffs(struct enetc_bdr *tx_ring, struct sk_buff *skb,
        enetc_bdr_idx_inc(tx_ring, &i);
        tx_ring->next_to_use = i;
 
+       skb_tx_timestamp(skb);
+
        /* let H/W know BD ring has been updated */
        enetc_wr_reg(tx_ring->tpir, i); /* includes wmb() */
 

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_ethtool.c b/drivers/net/ethernet/freescale/enetc/enetc_ethtool.c
index 880a8ed..301ee0d 100644 (file)
--- a/drivers/net/ethernet/freescale/enetc/enetc_ethtool.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_ethtool.c
@@ -579,6 +579,7 @@ static int enetc_get_ts_info(struct net_device *ndev,
                           (1 << HWTSTAMP_FILTER_ALL);
 #else
        info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
+                               SOF_TIMESTAMPING_TX_SOFTWARE |
                                SOF_TIMESTAMPING_SOFTWARE;
 #endif
        return 0;