From: "Roar Bjørgum Rotvik" <roarbr@tihlde.org>
To: linux_kernel_chan@yahoo.com
Cc: netdev@vger.kernel.org
Subject: Re: Is there any function similar to inet_ntoa() in Kernel or NetFilter ?
Date: Thu, 20 Nov 2008 10:34:18 +0100 [thread overview]
Message-ID: <49252F1A.4060304@tihlde.org> (raw)
In-Reply-To: <192580.22596.qm@web111104.mail.gq1.yahoo.com>
Kunsheng Chen wrote:
> Hello, everyone,
>
> I am doing a project similar to iptable using netfilter, currently I want to convert a IP address from 'long int' back to dotted address.
>
> I don't know whether there is some functions inside kernel or netfilter that could make that like using inet_ntoa() in <arpa/inet.h>
How about NIPQUAD and NIPQUAD_FMT (for IPv4):
http://lxr.linux.no/linux+v2.6.27.6/include/linux/kernel.h#L324
http://lxr.linux.no/linux+v2.6.27.6/include/linux/kernel.h#L319
Example on how to use:
http://lxr.linux.no/linux+v2.6.27.6/net/ipv4/ipconfig.c#L1184
printk("my address is " NIPQUAD_FMT "\n", NIPQUAD(ic_myaddr));
--
Roar Bjørgum Rotvik
next prev parent reply other threads:[~2008-11-20 10:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-20 0:03 Is there any function similar to inet_ntoa() in Kernel or NetFilter ? Kunsheng Chen
2008-11-20 9:34 ` Roar Bjørgum Rotvik [this message]
2008-11-21 23:08 ` Julius Volz
2008-11-25 2:03 ` Chuck Lever
2008-11-25 6:01 ` Harvey Harrison
2008-11-25 16:44 ` Chuck Lever
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=49252F1A.4060304@tihlde.org \
--to=roarbr@tihlde.org \
--cc=linux_kernel_chan@yahoo.com \
--cc=netdev@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;
as well as URLs for NNTP newsgroup(s).