cvs commit: src/sys/dev/age if_age.c if_agereg.h if_agevar.h
yongari at FreeBSD.org
Mon May 19 01:40:00 UTC 2008
yongari 2008-05-19 01:39:59 UTC
FreeBSD src repository
sys/dev/age if_age.c if_agereg.h if_agevar.h
Add age(4), a driver for Attansic/Atheros L1 gigabit ethernet
controller. L1 has several threshold/timer registers and they
seem to require careful tuned parameters to get best
performance. Datasheet for L1 is not available to open source
driver writers so age(4) focus on stability and correctness of
basic Tx/Rx operation. ATM the performance of age(4) is far from
optimal which in turn means there are mis-programmed registers or
incorrectly configured registers.
Currently age(4) supports all known hardware assistance including
- MSI support.
- TCP Segmentation Offload.
- Hardware VLAN tag insertion/stripping.
- TCP/UDP checksum offload.
- Interrupt moderation.
- Hardware statistics counter support.
- Jumbo frame support.
- WOL support.
L1 gigabit ethernet controller is mainly found on ASUS
motherboards. Note, it seems that there are other variants of
hardware as known as L2(Fast ethernet) and newer gigabit ethernet
(AR81xx) from Atheros. These are not supported by age(4) and
requires a seperate driver. Big thanks to all people who reported
feedback or tested patches.
Tested by: kevlo, bsam, Francois Ranchin < fyr AT fyrou DOT net >
Thomas Nystroem < thn AT saeab DOT se >
Roman Pogosyan < asternetadmin AT gmail DOT com >
Derek Tattersal < dlt AT mebtel DOT net >
Oliver Seitz < karlkiste AT yahoo DOT com >
Revision Changes Path
1.1 +3356 -0 src/sys/dev/age/if_age.c (new)
1.1 +656 -0 src/sys/dev/age/if_agereg.h (new)
1.1 +272 -0 src/sys/dev/age/if_agevar.h (new)
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