rue(4) for DragonFly

[Sepherosa Ziehau <sepherosa@xxxxxxxxx>]

Hi all,

I have done the initial porting of rue(4) driver.

This driver supports RealTek RTL8150 USB based devices:
- Melco LUA-KTX
- GREEN HOUSE GH-USB100B

Anyone that has the devices and is interested to test this driver,
please try this link:
http://leaf.dragonflybsd.org/~sephe/rue_df.tbz

Following diff is provided for code reviewing:
http://leaf.dragonflybsd.org/~sephe/rue.diff

This diff is against FreeBSD:
dev/usb/if_rue.c rev1.14
dev/usb/if_ruereg.h rev1.3
modules/rue/Makefile rev1.2

Feedback is welcome :-)

Best Regards,
sephe

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