Commit 3ea308da authored by Russell King's avatar Russell King Committed by Jakub Kicinski
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net: mvpp2: add support for hardware timestamps 



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: default avatarRussell King <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1uy82E-00000005Sll-0SSy@rmk-PC.armlinux.org.uk


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 5ed994dd

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

+7 −5
Original line number Diff line number Diff line
@@ -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);
@@ -5252,12 +5254,12 @@ 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 |

	info->so_timestamping |= SOF_TIMESTAMPING_TX_HARDWARE |

				 SOF_TIMESTAMPING_RX_HARDWARE |

				 SOF_TIMESTAMPING_RAW_HARDWARE;

	info->tx_types = BIT(HWTSTAMP_TX_OFF) |