iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: mscc: allow offloading timestamping operations to the PHY

Browse Source 
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>
This commit is contained in:
Antoine Tenart 2020-05-26 17:01:49 +02:00 committed by David S. Miller
parent 7ff4f3f315
commit b2e118f638
2 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/mscc/ocelot.c
View File

@ -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);

3
drivers/net/ethernet/mscc/ocelot_board.c
View File

@ -189,7 +189,8 @@ static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg)
skb->offload_fwd_mark = 1;
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb);
if (!skb_defer_rx_timestamp(skb))
netif_rx(skb);
dev->stats.rx_bytes += len;
dev->stats.rx_packets++;
} while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp));