Andrew Gallatin wrote:
> > My driver claims to do GLD_CAP_CKSUM_PARTIAL. Am I claiming the wrong
> > thing? What does it mean to claim GLD_CAP_CKSUM_FULL_V4?
> > GLD_CAP_CKSUM_FULL_V6?
>
> All the flags you specify will affect the way the network
> stack generates checksum info for outbound packets. For
> inbound, it'll take anything it recognizes. That means
> the feature can be asymmetric, e.g. partial on transmit
> and full/partial/both/none on receive.
Hmm.. This does not seem to happen, at least on 10U1. On 10U1,
I claim to be GLD_CAP_CKSUM_PARTIAL. For IPv6, I attach
the correct start/suff/end/csum and call it HCK_PARTIALCKSUM
and dtrace shows that it is ignored (hot stacks below). If
I cheat and claim a 0xffff HCK_FULLCKSUM, then it is still
ignored. Eg:
Right; you'd have to wait for S10 Update 2 (or whichever update
the changes went into) for this to take effect. There's no IPV6
checksum offload support in Update 1.
Adi
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