r199563:
Fix copy & paste error and remove extra space before colon.
r199608:
Remove unnecessary structure packing.
r199609:
Add initial endianness support. It seems the controller supports
both big-endian and little-endian format in descriptors for Rx path
but I couldn't find equivalent feature in Tx path. So just stick to
little-endian for now.
r199610:
Because we know received bytes including CRC there is no reason to
call m_adj(9). The controller also seems to have a capability to
strip CRC bytes but I failed to activate this feature except for
loopback traffic.
r199611:
Add IPv4/TCP/UDP Tx checksum offloading support. It seems the
controller also has support for IP/TCP checksum offloading for Rx
path. But I failed to find to way to enable Rx MAC to compute the
checksum of received frames.
r199612:
Add __FBSDID.
r199613:
Only Tx checksum offloading is supported now. Remove experimental
code sneaked in r199611.