FreeBSD 9.0 - BCE_JUMBO_HDRSPLIT kernel option for bce device still needed?

[Andrey Zonov]

On 4/26/12 6:02 PM, Mark Felder wrote:
> On Wed, 25 Apr 2012 14:41:40 -0500, Andrey Zonov <andrey at zonov.org> wrote:
>
>>
>> Hi,
>>
>> There is no such option in the kernel anymore, instead there is
>> hw.bce.hdr_split tunable which is turn on by default.
>>
>
> I've tried the kernel option and playing with this tunable on a pair of
> HP DL380s and had to give up. I was building ZFS SAN heads and was going
> to have 2x bce and 2x igb ethernets each LACP and Jumbo Frames. The bce
> devices simply would not work with jumbo frames. The packets disappeared
> into the great ether or something. Our switches never saw any being
> sent, and receiving jumbo frames showed absolutely no traffic via tcpdump.
>
> After dropping in a quad Intel NIC (4x igb) everything worked as expected.
>
> The bce hardware or driver is sketchy and I'd avoid it.

Please try this [1] if you can.

[1] http://lists.freebsd.org/pipermail/freebsd-net/2012-April/032157.html

-- 
Andrey Zonov