From c1f19b51d1d87f3e3bb7e6648f43f7d57ed2da6b Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Sat, 17 Jul 2010 08:49:36 +0000 Subject: net: support time stamping in phy devices. This patch adds a new networking option to allow hardware time stamps from PHY devices. When enabled, likely candidates among incoming and outgoing network packets are offered to the PHY driver for possible time stamping. When accepted by the PHY driver, incoming packets are deferred for later delivery by the driver. The patch also adds phylib driver methods for the SIOCSHWTSTAMP ioctl and callbacks for transmit and receive time stamping. Drivers may optionally implement these functions. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller --- drivers/net/phy/phy.c | 5 +++++ drivers/net/phy/phy_device.c | 2 ++ 2 files changed, 7 insertions(+) (limited to 'drivers/net/phy') diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index bd88d818f08..5130db8f5c4 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -361,6 +361,11 @@ int phy_mii_ioctl(struct phy_device *phydev, } break; + case SIOCSHWTSTAMP: + if (phydev->drv->hwtstamp) + return phydev->drv->hwtstamp(phydev, ifr); + /* fall through */ + default: return -EOPNOTSUPP; } diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 1a99bb24410..c0761197c07 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -460,6 +460,7 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, } phydev->attached_dev = dev; + dev->phydev = phydev; phydev->dev_flags = flags; @@ -513,6 +514,7 @@ EXPORT_SYMBOL(phy_attach); */ void phy_detach(struct phy_device *phydev) { + phydev->attached_dev->phydev = NULL; phydev->attached_dev = NULL; /* If the device had no specific driver before (i.e. - it -- cgit v1.2.3-70-g09d2