netdev - Re: [patch net-next V4] net: introduce ethernet teaming device

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Message-ID: <20111025070248.GB2070@minipsycho>
Date:	Tue, 25 Oct 2011 09:02:49 +0200
From:	Jiri Pirko <jpirko@...hat.com>
To:	Michał Mirosław <mirqus@...il.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	eric.dumazet@...il.com, bhutchings@...arflare.com,
	shemminger@...tta.com, fubar@...ibm.com, andy@...yhouse.net,
	tgraf@...radead.org, ebiederm@...ssion.com, kaber@...sh.net,
	greearb@...delatech.com, jesse@...ira.com, fbl@...hat.com,
	benjamin.poirier@...il.com, jzupka@...hat.com
Subject: Re: [patch net-next V4] net: introduce ethernet teaming device

Mon, Oct 24, 2011 at 07:22:36PM CEST, mirqus@...il.com wrote:
>2011/10/24 Jiri Pirko <jpirko@...hat.com>:
>> This patch introduces new network device called team. It supposes to be
>> very fast, simple, userspace-driven alternative to existing bonding
>> driver.
>[...]
>>  drivers/net/team/team.c                   | 1573 +++++++++++++++++++++++++++++
>>  drivers/net/team/team_mode_activebackup.c |  152 +++
>>  drivers/net/team/team_mode_roundrobin.c   |  107 ++
>
>I think this mode-modularity is overkill. One mode will compile to at
>most a few hundred bytes of code+data, but will use at least 10 times
>that to get loaded and tracked properly. How often/how many more modes
>you anticipate to be introduced? You could just keep the modular
>design but drop the kernel module separation and maybe have modes
>conditionally compiled (for those from the embedded world squeezing
>every byte).

~3-4 modes are coming in at least. I presume it would be possible to
squeeze "bacic modes" like roundrobin and activebackup directly into
team.c (or into team_basic_modes.c compiled in team.ko). But I would
leave that to future follow up patch.

>
>Best Regards,
>Michał Mirosław
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