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| /freebsd-10.3-release/sys/dev/msk/ | ||
| H A D | if_mskreg.h | diff 193293 Tue Jun 02 04:11:46 MDT 2009 yongari Add preliminary Yukon Extreme support and register definitions. Yukon Extreme uses new descriptor format for TSO and has Tx frame parser which greatly reduces CPU cycles spent in computing TCP/UDP payload offset calculation in Tx checksum offloading path. The new descriptor format also removed TCP/UDP payload computation for TSO which in turn results in better TSO performance. It seems Yukon Extreme has a lot of new (unknown) features but only basic offloading is supported at this time. So far there are two known issues. o Sometimes Rx overrun errors happen when pulling data over gigabit link. Running over 100Mbps seem to ok. o Ethernet hardware address shows all-zeroed value on 88E8070. Assigning ethernet address with ifconfig is necessary to make it work. Support for Yukon Extreme is not perfect but it would be better than having a non-working device. Special thanks to jbh who fixed several bugs of initial patch. Tested by: jhb, Warren Block ( wblock <> wonkity dot com ) |
| H A D | if_msk.c | diff 193293 Tue Jun 02 04:11:46 MDT 2009 yongari Add preliminary Yukon Extreme support and register definitions. Yukon Extreme uses new descriptor format for TSO and has Tx frame parser which greatly reduces CPU cycles spent in computing TCP/UDP payload offset calculation in Tx checksum offloading path. The new descriptor format also removed TCP/UDP payload computation for TSO which in turn results in better TSO performance. It seems Yukon Extreme has a lot of new (unknown) features but only basic offloading is supported at this time. So far there are two known issues. o Sometimes Rx overrun errors happen when pulling data over gigabit link. Running over 100Mbps seem to ok. o Ethernet hardware address shows all-zeroed value on 88E8070. Assigning ethernet address with ifconfig is necessary to make it work. Support for Yukon Extreme is not perfect but it would be better than having a non-working device. Special thanks to jbh who fixed several bugs of initial patch. Tested by: jhb, Warren Block ( wblock <> wonkity dot com ) |
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