netdev - Re: [PATCH net-next 1/4] mlx5: Make building eswitch configurable

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Message-ID: <588BD66E.2050201@fb.com>
Date:   Fri, 27 Jan 2017 15:23:26 -0800
From:   Alexei Starovoitov <ast@...com>
To:     Saeed Mahameed <saeedm@....mellanox.co.il>,
        Tom Herbert <tom@...bertland.com>
CC:     Or Gerlitz <gerlitz.or@...il.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        David Miller <davem@...emloft.net>,
        Linux Netdev List <netdev@...r.kernel.org>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH net-next 1/4] mlx5: Make building eswitch configurable

On 1/27/17 1:15 PM, Saeed Mahameed wrote:
> It is only mandatory for configurations that needs eswitch, where the
> driver has no way to know about them, for a good old bare metal box,
> eswitch is not needed.
>
> we can do some work to strip the l2 table logic - needed for PFs to
> work on multi-host - out of eswitch but again that would further
> complicate the driver code since eswitch will still need to update l2
> tables for VFs.

Saeed,
for multi-host setups every host in that multi-host doesn't
actually see the eswitch, no? Otherwise broken driver on one machine
can affect the other hosts in the same bundle? Please double check,
since this is absolutely critical HW requirement.