netdev - Re: [PATCH net-next v3] selftests: add IPv4 unicast extensions tests

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Message-ID: <eee96675-38b8-0252-a004-97c3537230be@gmail.com>
Date:   Mon, 25 Jan 2021 21:26:41 -0700
From:   David Ahern <dsahern@...il.com>
To:     Seth David Schoen <schoen@...alty.org>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        David Ahern <dsahern@...nel.org>, John Gilmore <gnu@...d.com>
Subject: Re: [PATCH net-next v3] selftests: add IPv4 unicast extensions tests

On 1/25/21 9:08 PM, Seth David Schoen wrote:
> Add selftests for kernel behavior with regard to various classes of
> unallocated/reserved IPv4 addresses, checking whether or not these
> addresses can be assigned as unicast addresses on links and used in
> routing.
> 
> Expect the current kernel behavior at the time of this patch. That is:
> 
> * 0/8 and 240/4 may be used as unicast, with the exceptions of 0.0.0.0
>   and 255.255.255.255;
> * the lowest address in a subnet may only be used as a broadcast address;
> * 127/8 may not be used as unicast (the route_localnet option, which is
>   disabled by default, still leaves it treated slightly specially);
> * 224/4 may not be used as unicast.
> 
> Signed-off-by: Seth David Schoen <schoen@...alty.org>
> Suggested-by: John Gilmore <gnu@...d.com>
> Acked-by: Dave Taht <dave.taht@...il.com>
> ---
>  tools/testing/selftests/net/Makefile          |   1 +
>  .../selftests/net/unicast_extensions.sh       | 228 ++++++++++++++++++
>  2 files changed, 229 insertions(+)
>  create mode 100755 tools/testing/selftests/net/unicast_extensions.sh
> 

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