netdev - RE: [PATCH net-next] rocker: check for BRIDGE_FLAGS

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Date:	Tue, 10 Mar 2015 00:51:51 +0000
From:	"Arad, Ronen" <ronen.arad@...el.com>
To:	Jiri Pirko <jiri@...nulli.us>, Netdev <netdev@...r.kernel.org>
CC:	Roopa Prabhu <roopa@...ulusnetworks.com>,
	Scott Feldman <sfeldma@...il.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: RE: [PATCH net-next] rocker: check for BRIDGE_FLAGS_SELF in bridge
 setlink handler



>-----Original Message-----
>From: Jiri Pirko [mailto:jiri@...nulli.us]
>Sent: Monday, March 09, 2015 4:08 PM
>To: Arad, Ronen
>Cc: Roopa Prabhu; Scott Feldman; Netdev; David S. Miller
>Subject: Re: [PATCH net-next] rocker: check for BRIDGE_FLAGS_SELF in bridge
>setlink handler
>
>Mon, Mar 09, 2015 at 04:59:13PM CET, ronen.arad@...el.com wrote:
>>
>>
>>>-----Original Message-----
>>>From: netdev-owner@...r.kernel.org [mailto:netdev-owner@...r.kernel.org] On
>>>Behalf Of Jiri Pirko
>>>Sent: Monday, March 09, 2015 6:41 AM
>>>To: Roopa Prabhu
>>>Cc: Scott Feldman; Netdev; David S. Miller
>>>Subject: Re: [PATCH net-next] rocker: check for BRIDGE_FLAGS_SELF in bridge
>>>setlink handler
>>>
>>>Mon, Mar 09, 2015 at 01:12:47AM CET, roopa@...ulusnetworks.com wrote:
>>>>On Sun, Mar 8, 2015 at 4:17 PM, Scott Feldman <sfeldma@...il.com> wrote:
>>>>
>>>>> On Sun, Mar 8, 2015 at 7:19 AM, roopa <roopa@...ulusnetworks.com> wrote:
>>>>> > On 3/6/15, 1:52 AM, Scott Feldman wrote:
>>>>>
[cut]
>>>
>>It would be nice to have switch driver implementation that could work
>>Consistently with and without the bridge driver. I expect use case where a
>bridge is only used when L3 is needed or to leverage L2 protocols that are
>implemented by the bridge driver (e.g. STP, IGMP snooping).
>>
>>If my driver can process setlink requests using SELF flag today, I'd like it
>>to work the same when setlink is propagated down from a bridge master or
>>from a team/bond master.
>
>I just want to note that the name of the op is "ndo_bridge_setlink" and
>it is specific for in-bridge use. Using it for team/bond seems very
>wrong to me.
>

This propagation from master to its slaves is in a recently applied patch.
Are you suggesting reverting the patch which added 
ndo_dflt_netdev_switch_port_bridge_setlink function which is set as the
ndo_bridge_setlink of both team and bond drivers?

Would renaming this NDO to "ndo_master_setlink" address your concern?
It could clarify that this ndo deals with master devices and is not limited
To just bridge driver.

My interest here is the VLAN filtering policy which is provisioned using the 
IFLA_AF_SPEC nested attribute of RTM_SETLINK command in PF_BRIDGE family.
VLAN policy is something that is common to Ethernet ports (physical or logical),
VLAN-aware bridge, or team/bond ports.

It is a reasonable expectation of users to use the team/bond as target for
any configuration that has to be mirrored to all of their enslaved ports.

[cut]
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