From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?ISO-8859-1?Q?Roar_Bj=F8rgum_Rotvik?= <roarbr@tihlde.org>
Subject: Re: Is there any function similar to inet_ntoa() in Kernel or NetFilter
 ?
Date: Thu, 20 Nov 2008 10:34:18 +0100
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Kunsheng Chen wrote:
> Hello, everyone,
>=20
> 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.
>=20
> I don't know whether there is some functions inside kernel or netfilt=
er 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));

--=20
Roar Bj=F8rgum Rotvik