[PATCH net-next] net: mvpp2: add support for hardware timestamps
From: Russell King <hidden>
Date: 2025-09-15 12:10:22
Subsystem:
marvell mvpp2 ethernet driver, networking drivers, the rest · Maintainers:
Marcin Wojtas, Russell King, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Add support for hardware timestamps in (e.g.) the PHY by calling skb_tx_timestamp() as close as reasonably possible to the point that the hardware is instructed to send the queued packets. As this also introduces software timestamping support, report those capabilities via the .get_ts_info() method. Signed-off-by: Russell King <redacted> --- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 35d1184458fd..ab0c99aa9f9a 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c@@ -4439,6 +4439,8 @@ static netdev_tx_t mvpp2_tx(struct sk_buff *skb, struct net_device *dev) txq_pcpu->count += frags; aggr_txq->count += frags; + skb_tx_timestamp(skb); + /* Enable transmit */ wmb(); mvpp2_aggr_txq_pend_desc_add(port, frags);
@@ -5252,14 +5254,14 @@ static int mvpp2_ethtool_get_ts_info(struct net_device *dev, { struct mvpp2_port *port = netdev_priv(dev); + ethtool_op_get_ts_info(dev, info); if (!port->hwtstamp) - return -EOPNOTSUPP; + return 0; info->phc_index = mvpp22_tai_ptp_clock_index(port->priv->tai); - info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | - SOF_TIMESTAMPING_TX_HARDWARE | - SOF_TIMESTAMPING_RX_HARDWARE | - SOF_TIMESTAMPING_RAW_HARDWARE; + info->so_timestamping |= SOF_TIMESTAMPING_TX_HARDWARE | + SOF_TIMESTAMPING_RX_HARDWARE | + SOF_TIMESTAMPING_RAW_HARDWARE; info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON); info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
--
2.47.3