linux-kernel - Re: [RFC PATCH 1/3] selftests: Add VRF icmp error route lookup test

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Date:   Thu, 6 Aug 2020 11:00:24 -0600
From:   David Ahern <dsahern@...il.com>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        David Ahern <dsa@...ulusnetworks.com>
Cc:     linux-kernel@...r.kernel.org,
        Michael Jeanson <mjeanson@...icios.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [RFC PATCH 1/3] selftests: Add VRF icmp error route lookup test

On 7/29/20 3:12 PM, Mathieu Desnoyers wrote:
> From: Michael Jeanson <mjeanson@...icios.com>
> 
> The objective is to check that the incoming vrf routing table is selected
> to send an ICMP error back to the source when the ttl of a packet reaches 1
> while it is forwarded between different vrfs.
> 
> The first test sends a ping with a ttl of 1 from h1 to h2 and parses the
> output of the command to check that a ttl expired error is received.
> 
> [This may be flaky, I'm open to suggestions of a more robust approch.]
> 
> The second test runs traceroute from h1 to h2 and parses the output to check
> for a hop on r1.
> 
> Signed-off-by: Michael Jeanson <mjeanson@...icios.com>
> Cc: David Ahern <dsa@...ulusnetworks.com>

Update the address to dsahern@...nel.org


> Cc: David S. Miller <davem@...emloft.net>
> Cc: netdev@...r.kernel.org
> ---
>  tools/testing/selftests/net/Makefile          |   1 +
>  .../selftests/net/vrf_icmp_error_route.sh     | 461 ++++++++++++++++++
>  2 files changed, 462 insertions(+)
>  create mode 100755 tools/testing/selftests/net/vrf_icmp_error_route.sh
> 

Test seems fine to me. you copied icmp_redirect.sh which is fine but
please clean up comments and functions not needed for this test.