In article <local.mail.freebsd-hackers/[EMAIL PROTECTED]> you write:
>> From: Jonathan Lemon <[EMAIL PROTECTED]>
>> Date: Sat, 25 Mar 2000 13:35:53 -0600
>> To: [EMAIL PROTECTED], [EMAIL PROTECTED]
>> Subject: Request for review (HW checksum patches)
>> X-Mailer: Mutt 1.0pre2i
>> Delivered-to: [EMAIL PROTECTED]
>> X-Loop: FreeBSD.org
>>
>> I have a set of patches which allows offloading checksums to
>> NICs which support it (right now, only the Alteon based cards).
>> The patch is at <http://www.freebsd.org/~jlemon/csum.patch>.
>
>This prompts a question on a related issue: there seems to be an increase
>in support of protocol operations on NICs (e.g., tickle/keep-alive support
>while the system is sleeping; IPSec; ...). Is there enough there to let us
>build a general mechanism for communication between stack and driver for
>this sort of thing (e.g., a "meta-data" slot in the packet header which
>points to an mbuf, or other structure, that contains the details)?
The patches I have were designed to solve a single problem, just
checksum offloading. There are enough bits left in the new flag field
that you could use for something else, I don't know enough about what
you'd want to do to say if it's enough for a general mechanism.
--
Jonathan
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