gianfar: Add hardware RX timestamping support

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The device is configured to insert hardware timestamps into all
received packets. The RX timestamps are extracted from the padding
alingment bytes during the clean_rx_ring operation and copied into the
skb_shared_hwtstamps struct of the skb. This extraction only happens if
the rx_filter was set to something else than HWTSTAMP_FILTER_NONE with
the SIOCSHWTSTAMP ioctl command.

Hardware timestamping is only supported for eTSEC devices. To indicate
device support the new FSL_GIANFAR_DEV_HAS_TIMER flag was introduced.

Signed-off-by: Manfred Rudigier <manfred.rudigier@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Manfred Rudigier 2010-04-08 23:10:03 +00:00 • committed by David S. Miller

parent e44171f115

commit cc772ab7cd

2 changed files with 66 additions and 5 deletions

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66

drivers/net/gianfar.c

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5

drivers/net/gianfar.h

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