Re: Call for testers: Atheros AR8121(L1E)/AR8113/AR8114(L2E) ethernet

On Fri, Dec 19, 2008 at 04:19:31PM +0100, albri wrote:
 > On Wed, Dec 03, 2008 at 06:05:40PM +0900, Pyun YongHyeon wrote:
 > > On Mon, Nov 24, 2008 at 01:58:46PM +0900, To albri wrote:
 > >  > On Mon, Nov 17, 2008 at 07:14:12PM +0100, albri wrote:
 > >  >  > hello,
 > >  >  > 
 > >  >  > On 11/17/08, Pyun YongHyeon <pyunyh_at_gmail.com> wrote:
 > >  >  > > On Sun, Nov 16, 2008 at 03:42:16PM +0100, albri wrote:
 > >  >  > >  > hello,
 > >  >  > >  >
 > >  >  > >  > I have issues transfering big or many files over ethernet on 1000H, also.
 > >  >  > >  > Using yongari's ale(4) driver
 > >  >  > >  > http://people.freebsd.org/~yongari/ale/ale.20081114.tar.gz I did not
 > >  >  > >  > have any problems while I surf or download 37MB sourcecode from inet.
 > >  >  > >  > Then scp(1)'ing source from 1000H to desktop PC showed a transfer rate
 > >  >  > >  > with maximum 86kB/s regardless to which direction is copied. The
 > >  >  > >  > ethernet NIC, while copying, is switched off regularily then. No
 > >  >  > >  > copies possible after three megabytes.
 > >  >  > >
 > >  >  > > Try turning off TSO and let me know how it goes.
 > >  >  > > ("#ifconfig ale0 -tso" will do the job.)
 > >  >  > >
 > >  >  > 
 > >  >  > this helps a little bit with two effects.
 > >  >  > Copying source-tree with scp(1):
 > >  >  > Now I can see transfers with up to approx. 500kB/s - inaccurate
 > >  >  > measured with scp(1),
 > >  >  > but relation counts.
 > >  >  > Transfer stalles after different data volumes with DMA-error on tty0,
 > >  >  > but networking
 > >  >  > port is not turned off. This happens after 30-80MB data transfers.
 > >  >  > You can restart the whole copy at once again.
 > >  >  > 
 > >  >  > Copying source-tree with nc(1) tar-gzipped:
 > >  >  > Transfer stops and starts with DMA-error every approx. 7MB with turning off NIC.
 > >  > 
 > >  > I still can't reproduce this and I have no idea how to solve it
 > >  > even if I can reproduce that on my box. :-(
 > >  > There could be a wrong in DMA configuration or some mis-programmed
 > >  > registers but I still see no errors in these area.
 > >  > 
 > > 
 > > FYI: Fix committed to HEAD(r185577).
 > > 
 > > -- 
 > > Regards,
 > > Pyun YongHyeon
 > 
 > hello,
 > 
 > with a fresh csup(1) from 19th of December nc(1) is working without any
 > errors, now.

Thanks for testing.

 > Thank you very much for your work.

You're welcome.

 > BTW: Do you have any reading hints about developing FBSD drivers?
 > 

FreeBSD developers' handbook has valuable information for starters
but it lacks how to write a network device driver. Personally I
used to read other driver sources in tree and asked questions to
other developers.

-- 
Regards,
Pyun YongHyeon