2009-03-16 13:25:51

by Cliffe

Subject: Getting the port numbers and IP address from struct socket

Hi,

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

I appreciate any advice. Thank you,

Cliffe.
--

2009-03-16 13:58:40

by Matthias Kaehlcke

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 ([email protected])

best regards

--
Matthias Kaehlcke
Embedded Linux Engineer
Barcelona

Anyone who has never made a mistake has never tried anything new
(Albert Einstein)
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