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Subject[PATCH net-next] enetc: add software timestamping
Date
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>
---
drivers/net/ethernet/freescale/enetc/enetc.c | 2 ++
drivers/net/ethernet/freescale/enetc/enetc_ethtool.c | 1 +
2 files changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index 17739906c966..2ee4a2cd4780 100644
--- 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 880a8ed8bb47..301ee0dde02d 100644
--- 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;
--
2.20.1
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