netdev - Re: Retrieving the network namespace of a socket

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Message-ID: <CAHNKnsRFah6MRxECTLNwu+maN0o9jS9ENzSAiWS4v1247BqYdg@mail.gmail.com>
Date:   Wed, 20 Oct 2021 17:03:56 +0300
From:   Sergey Ryazanov <ryazanov.s.a@...il.com>
To:     Sargun Dhillon <sargun@...gun.me>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        Christian Brauner <christian.brauner@...ntu.com>
Subject: Re: Retrieving the network namespace of a socket

Hello Sargun,

On Wed, Oct 20, 2021 at 12:57 PM Sargun Dhillon <sargun@...gun.me> wrote:
> I'm working on a problem where I need to determine which network namespace a
> given socket is in. I can currently bruteforce this by using INET_DIAG, and
> enumerating namespaces and working backwards.

Namespace is not a per-socket, but a per-process attribute. So each
socket of a process belongs to the same namespace.

Could you elaborate what kind of problem you are trying to solve?
Maybe there is a more simple solution. for it.

-- 
Sergey