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net: mvpp2: add support for hardware timestamps

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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 <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1uy82E-00000005Sll-0SSy@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King 2025-09-15 13:10:18 +01:00 committed by Jakub Kicinski
parent 5ed994dd0b
commit 3ea308da69
1 changed files with 7 additions and 5 deletions
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12
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
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@ -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) |