Re: cvs commit: src/sys/dev/netif/bge if_bge.c

["Sepherosa Ziehau" <sepherosa@xxxxxxxxx>]

On 6/26/07, Thomas Nikolajsen <thomas.nikolajsen@mail.dk> wrote:
> >sephe       2007/04/23 08:14:37 PDT
> >..
> >  Correct hardware csum offload support for bge(4)
> >
> >  Obtained-from: FreeBSD (w/ modification)
> >
> >  Revision  Changes    Path
> >  1.69      +66 -18    src/sys/dev/netif/bge/if_bge.c
>
> This breaks bge(4) for NICs I use, see below:
>  - on nfs client using bge(4) for nfs:
> 'cat /nfs/file' stalls without printing anything from file.
> tcpdump on nfs client shows that data is received;
> and resent with doubling interval.
> 'ls /nfs' normally works before stall.
>
>  - using tcp for nfs fixes problem
>  - 'ifconfig bge0 -rxcsum' fixes problem
>  - backing out commit fixes problem
>
> icmp & tcp doesn't seem to be affected: ping & ssh works without problems.
> Trying old kernels from chlamydia pointed to data of this commit.

Should be fixed on HEAD, please test whether it works for you.

>  -thomas
> -- host1
> - dmesg
> bge0: <Altima AC9100 Gigabit Ethernet, ASIC rev. 0x105> mem 0xec040000-0xec04ffff irq 10 at device 12.0 on pci0

I suggest using polling(4) on this card; interrupt moderation is
completely broken on it.

Best Regards,
sephe

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