diff options
| author | Richard Cochran <richardcochran@gmail.com> | 2010-07-17 08:49:36 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-07-18 19:15:26 -0700 |
| commit | c1f19b51d1d87f3e3bb7e6648f43f7d57ed2da6b (patch) | |
| tree | d9525359409e3493b48e8676717cc11ed69b640a /net/core/dev.c | |
| parent | 15f0127d1d189fda3294b7823e3e654afca54055 (diff) | |
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 <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index e2b9fa2c917..1c002c7ef5d 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2957,6 +2957,9 @@ int netif_receive_skb(struct sk_buff *skb) if (netdev_tstamp_prequeue) net_timestamp_check(skb); + if (skb_defer_rx_timestamp(skb)) + return NET_RX_SUCCESS; + #ifdef CONFIG_RPS { struct rps_dev_flow voidflow, *rflow = &voidflow; |