From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
To: "Rémi Denis-Courmont" <remi@remlab.net>
Cc: netdev@vger.kernel.org
Subject: Re: IPV6_RTHDR with a type-0 routing header
Date: Thu, 20 Aug 2009 14:39:26 +0200 [thread overview]
Message-ID: <20090820123926.GA21858@uio.no> (raw)
In-Reply-To: <20090820121820.GA21354@uio.no>
On Thu, Aug 20, 2009 at 02:18:20PM +0200, Steinar H. Gunderson wrote:
> Hm, OK. And no replacement has been proposed, the deprecation RFC just refers
> to "future routing headers"...
It looks like I can use destination options instead, but those don't seem to
be too easy to use either. The kernel seems to demand that I put eight bytes
of padding at the end?
#define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
Why the +1?
FWIW, the program I try to run is at http://home.samfundet.no/~sesse/v6fun.c .
If I replace "len" in the setsockopt call by "len + 8", the program runs and
the packets get the right option attached -- but also eight padding bytes.
/* Steinar */
--
Homepage: http://www.sesse.net/
next prev parent reply other threads:[~2009-08-20 12:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-20 11:11 IPV6_RTHDR with a type-0 routing header Steinar H. Gunderson
2009-08-20 11:29 ` Jens Rosenboom
2009-08-20 11:29 ` Rémi Denis-Courmont
2009-08-20 12:18 ` Steinar H. Gunderson
2009-08-20 12:39 ` Steinar H. Gunderson [this message]
2009-08-20 12:53 ` Jens Rosenboom
2009-08-20 13:00 ` Steinar H. Gunderson
2009-08-20 13:11 ` Steinar H. Gunderson
2009-08-21 1:09 ` Shan Wei
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=20090820123926.GA21858@uio.no \
--to=sgunderson@bigfoot.com \
--cc=netdev@vger.kernel.org \
--cc=remi@remlab.net \
/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;
as well as URLs for NNTP newsgroup(s).