Re: broadcom 57766 and jumbo frames

[Masanobu SAITOH <msaitoh%execsw.org@localhost>]

Hello, Emmanuel.

(2013/06/28 19:31), Emmanuel Dreyfus wrote:
> Hi
>
> New iMac have a broadcom 57766, which is handled out of the box by the
> bge(4) driver in -current. The driver almosts treats it as a 57765,
> which seems almost correct when looking at Linux driver contributed
> by Broadcom:
> http://code.google.com/p/linux-picosam9g45/source/diff?spec=svn55086ad95d740577def0b4e6ecc2c0ae9b0d6dec&r=55086ad95d740577def0b4e6ecc2c0ae9b0d6dec&format=side&path=/drivers/net/ethernet/broadcom/tg3.c
>
> Unfortunately, jumbo frames do not work either on 57766 nor on 57765
> on NetBSD. I tried telling it was jumbo capable without much success.
> I also tried to incoporate some tweaks from the Linux commit above,
> but it does not help.
>
> It seems impossible to send or receive anything beyond around 1500
> bytes with mtu set to 9000. I note that ifconfig still reports ec_enabled=0
> I wonder if it is a problem with 57766 specific adjustements, or if it is the
> bge(4) driver itelf that is jumbo frame incapable for now.
>
> Anyone had jumbo frames actually working for another bge(4) board?

 As I wrote about wm(4) a few weeks ago, I don't use jumbo frame
function, so I don't know whether other bge's jumb frame function
work or not. Sorry :-|


 I have no any 577xx card, but I have something come to mind and it's
 easy to test, so I'll test with my cards.


 Could you compile a kernel with BGE_DEBUG and show me the dmesg?

--
-----------------------------------------------
                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)