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

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Date:	Sun, 09 Nov 2014 22:43:58 -0500
From:	Jamal Hadi Salim <jhs@...atatu.com>
To:	Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org
CC:	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

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?

cheers,
jamal

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

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