netdev - Re: [PATCH v2 net-next 4/4] selftests: fcnal: Test SO

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Message-ID: <69af34f8-2984-1dca-147f-f99ab5bc4f4d@kernel.org>
Date: Thu, 11 May 2023 09:04:31 -0600
From: David Ahern <dsahern@...nel.org>
To: Guillaume Nault <gnault@...hat.com>, David Miller <davem@...emloft.net>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Eric Dumazet <edumazet@...gle.com>
Cc: netdev@...r.kernel.org
Subject: Re: [PATCH v2 net-next 4/4] selftests: fcnal: Test SO_DONTROUTE on
 raw and ping sockets.

On 5/11/23 8:39 AM, Guillaume Nault wrote:
> Use ping -r to test the kernel behaviour with raw and ping sockets
> having the SO_DONTROUTE option.
> 
> Since ipv4_ping_novrf() is called with different values of
> net.ipv4.ping_group_range, then it tests both raw and ping sockets
> (ping uses ping sockets if its user ID belongs to ping_group_range
> and raw sockets otherwise).
> 
> With both socket types, sending packets to a neighbour (on link) host,
> should work. When the host is behind a router, sending should fail.
> 
> Signed-off-by: Guillaume Nault <gnault@...hat.com>
> ---
>  tools/testing/selftests/net/fcnal-test.sh | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 

Reviewed-by: David Ahern <dsahern@...nel.org>