Re: [PATCH 3/5] net: mvneta: do not schedule in mvneta_tx_timeout

Hi Ben,

On Sun, Jan 12, 2014 at 05:38:53PM +0000, Ben Hutchings wrote:

[Putting another hat on]

On Sun, 2014-01-12 at 17:55 +0100, Willy Tarreau wrote:

quoted

Hi Ben,

On Sun, Jan 12, 2014 at 04:49:51PM +0000, Ben Hutchings wrote:
(...)

quoted

quoted

So for now, let's simply ignore these timeouts generally caused by bugs
only.

No, don't ignore them.  Schedule a work item to reset the device.  (And
remember to cancel it when stopping the device.)

OK I can try to do that. Could you recommend me one driver which does this
successfully so that I can see exactly what needs to be taken care of ?

sfc does it, though the reset logic there is more complicated than you
would need.

OK.

I think this will DTRT, but it's compile-tested only.

OK, I'll test it ASAP. I think I can force the tx timeout by disabling
the link state detection and unplugging the cable during a transfer.

I have been given an OpenBlocks AX3 but haven't set it up yet.

Ah you're another lucky owner of this really great device :-)

I've sent Eric Leblond a complete howto in french, so it won't be of
a big use to you but if I can find some time and you don't find other
info, I can try to redo it in english. However you may be interested
in this article I put online with a few patches to make your life
easier :

   http://1wt.eu/articles/openblocks-http-server/

It's a line-rate (1.488 Mpps) HTTP server I've done on it with a few
patches that may be useful for other network tests.

Cheers,
Willy