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Re: Disabling UDP checksums on HME

> Looking at:
> and related bugs, sun ethernet cards have a UDP checksum bug where a
> checksum of 0x0000 is not converted to 0xffff.
> So, it looks like we should disable UDP checksums for hme(4)

I guess disabling only udp4csum-tx is enough.

> and also
> calculate software checksums when the packet length is less than 64
> bytes.

I think you are talking about bug #6587521
but it doesn't mention how badly the hardware calculates sums.

I wonder if manual padding can help it or not, but
I can't reproduce UDP packets with wrong cksum
on quick tests with PCI hme(4).
Izumi Tsutsui

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