netdev - Re: [PATCH] iproute2: ip: add wilcard support for device matching

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Message-ID: <4D0FAD26.8050908@rosedu.org>
Date:	Mon, 20 Dec 2010 11:23:18 -0800
From:	Vlad Dogaru <ddvlad@...edu.org>
To:	hadi@...erus.ca
CC:	Octavian Purdila <opurdila@...acom.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	netdev@...r.kernel.org,
	Lucian Adrian Grijincu <lucian.grijincu@...il.com>
Subject: Re: [PATCH] iproute2: ip: add wilcard support for device matching

On 12/17/2010 5:38 AM, jamal wrote:
> On Fri, 2010-12-10 at 20:06 +0200, Octavian Purdila wrote:
>
>>> $ ip link add link bond0 "vlan\*199" type vlan id 199
>>> $ ifconfig "vlan\*199"
>>
>> :) Then use a special dev keyword like dev* ?
>>
>> $ ip link set dev* dummy set
>>
>> Or use a new flag to allow expansion?
>>
>> $ ip -e link set dev dummy* set
>
> There was something ive always wanted to do but
> havent had time. It will cut time in a big way the
> user-kernel interaction in precisely your situation.
>
> Add a new general purpose netdev 32 bit tag. You can use this
> feature to "group" netdevs. The group "all netdevs" is 0 - which
> is the default.
> I can group individual dummy interfaces into group 1.
> ip link dev dummy0 set group 1
> ..
> ..
> ip link dev dummy99 set group 1
>
> Then i can send a query to only ifup and ignore
> the 1000 vlans that exist.
>
> ip link dev ls group 1
>
> or if i didnt list the group, then group 0 is assumed.

I'll try to implement this approach in the next few days.

Vlad
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