net: mscc: allow offloading timestamping operations to the PHY (b2e118f6) · Commits · 戴 / test

This patch adds support for offloading timestamping operations not only to the Ocelot switch (as already supported) but to compatible PHYs. When both the PHY and the Ocelot switch support timestamping operations, the PHY implementation is chosen as the timestamp will happen closer to the medium. Signed-off-by:

Antoine Tenart <antoine.tenart@bootlin.com> Reviewed-by:

Andrew Lunn <andrew@lunn.ch> Signed-off-by:

David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mscc/ocelot.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -1204,7 +1204,10 @@ static int ocelot_ioctl(struct net_device dev, struct ifreq ifr, int cmd)
		struct ocelot *ocelot = priv->port.ocelot;
		int port = priv->chip_port;

		if (ocelot->ptp) {
		/* If the attached PHY device isn't capable of timestamping operations,
		* use our own (when possible).
		*/
		if (!phy_has_hwtstamp(dev->phydev) && ocelot->ptp) {
		switch (cmd) {
		case SIOCSHWTSTAMP:
		return ocelot_hwstamp_set(ocelot, port, ifr);

drivers/net/ethernet/mscc/ocelot_board.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -189,6 +189,7 @@ static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg)
		skb->offload_fwd_mark = 1;

		skb->protocol = eth_type_trans(skb, dev);
		if (!skb_defer_rx_timestamp(skb))
		netif_rx(skb);
		dev->stats.rx_bytes += len;
		dev->stats.rx_packets++;

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