linux-kernel - Re: Getting the port numbers and IP address from struct socket

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Message-ID: <20090316135822.GF6891@traven>
Date:	Mon, 16 Mar 2009 14:58:22 +0100
From:	Matthias Kaehlcke <matthias@...hlcke.net>
To:	Cliffe <cliffe@...net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Getting the port numbers and IP address from struct socket

El Mon, Mar 16, 2009 at 10:03:31PM +0800 Cliffe ha dit:

> This may be a simple question, but how do I determine the port numbers,  
> and IP addresses from a (struct socket)socket?

i'm far from being a networking expert, so i might be plain
wrong. after having a look at the kernel sources i think it works in
the following way:

struct inet_sock *inet = inet_sk(socket->sk);

the data you are looking for are:

inet->saddr
inet->sport
inet->daddr
inet->dport

btw: for these kind of questions it is better to write to the
kernelnewbies list (kernelnewbies@...linux.org)

best regards

-- 
Matthias Kaehlcke
Embedded Linux Engineer
Barcelona

      Anyone who has never made a mistake has never tried anything new
                            (Albert Einstein)
                                                                 .''`.
    using free software / Debian GNU/Linux | http://debian.org  : :'  :
                                                                `. `'`
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