netdev - Re: [PATCH bpf] samples/bpf: xdp_redirect, correctly get dummy program id

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Message-ID: <1ab19a95-36c7-5113-bdd2-00643bfab8b6@iogearbox.net>
Date:   Mon, 24 Jun 2019 16:20:16 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Prashant Bhole <prashantbhole.linux@...il.com>,
        Alexei Starovoitov <ast@...nel.org>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH bpf] samples/bpf: xdp_redirect, correctly get dummy
 program id

On 06/20/2019 08:58 AM, Prashant Bhole wrote:
> When we terminate xdp_redirect, it ends up with following message:
> "Program on iface OUT changed, not removing"
> This results in dummy prog still attached to OUT interface.
> It is because signal handler checks if the programs are the same that
> we had attached. But while fetching dummy_prog_id, current code uses
> prog_fd instead of dummy_prog_fd. This patch passes the correct fd.
> 
> Fixes: 3b7a8ec2dec3 ("samples/bpf: Check the prog id before exiting")
> Signed-off-by: Prashant Bhole <prashantbhole.linux@...il.com>

Applied, thanks!