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 --- net/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'net/Kconfig') diff --git a/net/Kconfig b/net/Kconfig index 0d68b40fc0e..b3250944cde 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -86,6 +86,16 @@ config NETWORK_SECMARK to nfmark, but designated for security purposes. If you are unsure how to answer this question, answer N. +config NETWORK_PHY_TIMESTAMPING + bool "Timestamping in PHY devices" + depends on EXPERIMENTAL + help + This allows timestamping of network packets by PHYs with + hardware timestamping capabilities. This option adds some + overhead in the transmit and receive paths. + + If you are unsure how to answer this question, answer N. + menuconfig NETFILTER bool "Network packet filtering framework (Netfilter)" ---help--- -- cgit v1.2.3