ixl(4) RSS hash type

[Sepherosa Ziehau]

Hi all,

I am on the way to cleanup the UDP_IPV4_EX bit.  The only effective
consumer of this undefined RSS hash type is ixl.

So I took a bit close look at it, then I have several question about
its hash type configuration:

ixl_set_rss_pctypes().  It tries to set hash for IPV6 fragment, if
RSS_IPV6_EX is set for "options RSS".  RSS_IPV6_EX never meant IPV6
fragments:
https://docs.microsoft.com/en-us/windows-hardware/drivers/network/rss-hashing-types#ndishashipv6ex

ixl_ptype_to_hash().  As far as I understand, the decoded.outer_frag
means "outer packet header indicates a fragment", which has nothing to
do with the any of the IPV6_EX related bits:
https://docs.microsoft.com/en-us/windows-hardware/drivers/network/rss-hashing-types

I believe these all should be fixed.

Thanks,
sephe

-- 
Tomorrow Will Never Die