netdev - Re: [patch net-next v2 03/10] rtnl: expose physical switch id for particular device

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Message-ID: <20141110074502.GC1850@nanopsycho.orion>
Date:	Mon, 10 Nov 2014 08:45:02 +0100
From:	Jiri Pirko <jiri@...nulli.us>
To:	Jamal Hadi Salim <jhs@...atatu.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net, nhorman@...driver.com,
	andy@...yhouse.net, tgraf@...g.ch, dborkman@...hat.com,
	ogerlitz@...lanox.com, jesse@...ira.com, pshelar@...ira.com,
	azhou@...ira.com, ben@...adent.org.uk, stephen@...workplumber.org,
	jeffrey.t.kirsher@...el.com, vyasevic@...hat.com,
	xiyou.wangcong@...il.com, john.r.fastabend@...el.com,
	edumazet@...gle.com, sfeldma@...il.com, f.fainelli@...il.com,
	roopa@...ulusnetworks.com, linville@...driver.com,
	jasowang@...hat.com, ebiederm@...ssion.com,
	nicolas.dichtel@...nd.com, ryazanov.s.a@...il.com,
	buytenh@...tstofly.org, aviadr@...lanox.com, nbd@...nwrt.org,
	alexei.starovoitov@...il.com, Neil.Jerram@...aswitch.com,
	ronye@...lanox.com, simon.horman@...ronome.com,
	alexander.h.duyck@...hat.com, john.ronciak@...el.com,
	mleitner@...hat.com, shrijeet@...il.com, gospo@...ulusnetworks.com,
	bcrl@...ck.org
Subject: Re: [patch net-next v2 03/10] rtnl: expose physical switch id for
 particular device

Mon, Nov 10, 2014 at 04:43:58AM CET, jhs@...atatu.com wrote:
>On 11/09/14 05:51, Jiri Pirko wrote:
>>The netdevice represents a port in a switch, it will expose
>>IFLA_PHYS_SWITCH_ID value via rtnl. Two netdevices with the same value
>>belong to one physical switch.
>>
>>Signed-off-by: Jiri Pirko <jiri@...nulli.us>
>>---
>>  include/uapi/linux/if_link.h |  1 +
>>  net/core/rtnetlink.c         | 26 +++++++++++++++++++++++++-
>>  2 files changed, 26 insertions(+), 1 deletion(-)
>>
>>diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
>>index 7072d83..4163753 100644
>>--- a/include/uapi/linux/if_link.h
>>+++ b/include/uapi/linux/if_link.h
>>@@ -145,6 +145,7 @@ enum {
>>  	IFLA_CARRIER,
>>  	IFLA_PHYS_PORT_ID,
>>  	IFLA_CARRIER_CHANGES,
>>+	IFLA_PHYS_SWITCH_ID,
>>  	__IFLA_MAX
>>  };
>>
>
>
>>@@ -1198,6 +1221,7 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
>>  	[IFLA_NUM_RX_QUEUES]	= { .type = NLA_U32 },
>>  	[IFLA_PHYS_PORT_ID]	= { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
>>  	[IFLA_CARRIER_CHANGES]	= { .type = NLA_U32 },  /* ignored */
>>+	[IFLA_PHYS_SWITCH_ID]	= { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
>>  };
>>
>
>Ok, looking at this compared to #1 i can see you are introducing
>IFLA_PHYS_SWITCH_ID but then why did you need to change IFLA_PHYS_PORT_ID
>earlier?

I did not change it at all. I only made the name more generic. Please
look closer to the patch 1.

>
>cheers,
>jamal
>
>>  static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
>>
>
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