linux-kernel - Re: [PATCH 04/11] selftests: net/fcnal: Use accept

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Message-ID: <b7b60c7f-2d79-26a2-3eb1-ef1e68ff3e8b@gmail.com>
Date:   Wed, 6 Oct 2021 08:38:11 -0600
From:   David Ahern <dsahern@...il.com>
To:     Leonard Crestez <cdleonard@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Shuah Khan <shuah@...nel.org>, David Ahern <dsahern@...nel.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Ido Schimmel <idosch@...dia.com>,
        Seth David Schoen <schoen@...alty.org>,
        netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 04/11] selftests: net/fcnal: Use accept_dad=0 to avoid
 setup sleep

On 10/6/21 5:47 AM, Leonard Crestez wrote:
> Duplicate Address Detection makes ipv6 addresses unavailable for a short
> period after adding (average about 1 second). Adding sleep statements
> avoid this but since all addresses in the test environment are
> controlled from the same source we can just disable DAD for the entire
> namespace.
> 
> Unlike sprinkling nodad to all ipv6 address additions this also skips
> DAD for link-local-addresses.
> 
> Signed-off-by: Leonard Crestez <cdleonard@...il.com>
> ---
>  tools/testing/selftests/net/fcnal-test.sh | 17 +++++++----------
>  1 file changed, 7 insertions(+), 10 deletions(-)
> 

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