netdev - Re: [PATCH netnext 0/3] packet: Add option to create new fanout group with unique id.

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Message-ID: <CAF=yD-J_tROiJv9eHsir+YYyZTKpXBueGecpGxbR8vkSqeSn=w@mail.gmail.com>
Date:   Fri, 21 Apr 2017 10:59:31 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Mike Maloney <maloneykernel@...il.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Mike Maloney <maloney@...gle.com>
Subject: Re: [PATCH netnext 0/3] packet: Add option to create new fanout group
 with unique id.

On Thu, Apr 20, 2017 at 3:25 PM, Mike Maloney <maloneykernel@...il.com> wrote:
> From: Mike Maloney <maloney@...gle.com>
>
> Fanout uses a per net global namespace. A process that intends to create a
> new fanout group can accidentally join an existing group. It is
> not possible to detect this.
>
> Add a socket option to specify on the first call to
> setsockopt(..., PACKET_FANOUT, ...) to ensure that a new group is created.
> Also add tests.
>
> Mike Maloney (3):
>   selftests/net: cleanup unused parameter in psock_fanout
>   packet: add PACKET_FANOUT_FLAG_UNIQUEID to assign new fanout group id.
>   selftests/net: add tests for PACKET_FANOUT_FLAG_UNIQUEID
>
>  include/uapi/linux/if_packet.h             |  1 +
>  net/packet/af_packet.c                     | 44 ++++++++++++++
>  tools/testing/selftests/net/psock_fanout.c | 93 ++++++++++++++++++++++++++----
>  3 files changed, 128 insertions(+), 10 deletions(-)

Gmail refused to send out the main patch (2/3) from a fresh account. I
resubmitted the entire patchset on Mike's behalf.