Re: IP bad-len 0 ( on em0 )

On Monday 10 March 2008 23:26:39 Vitezslav Novy wrote:
> Steven Hartland wrote:
> > Did you ever get anywhere with this? Did Jack respond?
> >
> > ----- Original Message ----- From: "Nikolay Pavlov" <qpadla_at_gmail.com>
> >
> > On Wednesday 06 February 2008 19:12:20 Vitezslav Novy wrote:
> >> >> Do you have set TSO flag on interface?
> >> >
> >> > Good catch. The problem is gone with net.inet.tcp.tso set to 0.
> >> > But TSO is enabled by default in 7.0. Could this be a em driver
> >> > bug?
> >>
> >> I don't know. I only saw this when researched another TSO related
> >> problem.
> >>
> >> vita
> >
> > May be Jack could say something about this?
>
> It is TSO related problem of em driver.
> Affects only cards with adapter->hw.mac.type < e1000_82575.
> During transmit function em_tso_setup is called and this function sets
> packet ip_len field to zero. (also ip csum)
>
> After successful transmit, packet is injected to BPF with zeroed ip_len
>   field.

So this is driver or hardware problem? Should i change a network card?


-- 
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- Best regards, Nikolay Pavlov. <<<-----------------------------------    
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