From: Andi Kleen <ak@suse.de>
To: harish.vasudeva@amd.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: Need Info on Checksum Offloading
Date: 15 Nov 2001 07:16:27 +0100 [thread overview]
Message-ID: <p731yj07e4k.fsf@amdsim2.suse.de> (raw)
In-Reply-To: <CB35231B9D59D311B18600508B0EDF2F0197A311@caexmta9.amd.com.suse.lists.linux.kernel>
In-Reply-To: harish.vasudeva@amd.com's message of "15 Nov 2001 02:25:09 +0100"
harish.vasudeva@amd.com writes:
> Hi All,
>
> Could any1 pls direct me wherein i could find some documentation about implementing checksum offloading for my ethernet LAN driver?
include/linux/skbuff.h has a big fat comment describing checksums handling.
Just read it.
For RX checksums you just set ip_summed of the incoming skb
to CHECKSUM_UNNCESSARY (you did a complete check of the checksum;
not recommended as you're unlikely to support all weird protocols) or
CHECKSUM_HW (you put a checksum of the TCP/UDP data area minus pseudo header
and ip header into skb->csum) or CHECKSUM_NONE for sw checksum.
-Andi
next parent reply other threads:[~2001-11-21 18:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CB35231B9D59D311B18600508B0EDF2F0197A311@caexmta9.amd.com.suse.lists.linux.kernel>
2001-11-15 6:16 ` Andi Kleen [this message]
2001-11-15 1:20 harish.vasudeva
2001-11-15 1:41 ` Jeff Garzik
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=p731yj07e4k.fsf@amdsim2.suse.de \
--to=ak@suse.de \
--cc=harish.vasudeva@amd.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®