netdev - Re: [patch net-next v2 1/3] net: add ndo to get id of physical port of the device

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Message-ID: <CAJZOPZJaKbMhtN4JSi6ScaRtwUNMK69trCccsdZvA7=57cDknQ@mail.gmail.com>
Date:	Sun, 21 Jul 2013 14:10:41 +0300
From:	Or Gerlitz <or.gerlitz@...il.com>
To:	Jiri Pirko <jiri@...nulli.us>
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	stephen@...workplumber.org, Narendra_K@...l.com,
	bhutchings@...arflare.com, john.r.fastabend@...el.com
Subject: Re: [patch net-next v2 1/3] net: add ndo to get id of physical port
 of the device

On Sat, Jul 20, 2013 at 8:53 PM, Jiri Pirko <jiri@...nulli.us> wrote:
>
> This patch adds a ndo for getting physical port of the device. Driver
> which is aware of being virtual function of some physical port should
> implement this ndo.
>
> Signed-off-by: Jiri Pirko <jiri@...nulli.us>
> ---
>  include/linux/netdevice.h | 20 ++++++++++++++++++++
>  net/core/dev.c            | 18 ++++++++++++++++++
>  2 files changed, 38 insertions(+)
>
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 0741a1e..726dec2 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -728,6 +728,16 @@ struct netdev_fcoe_hbainfo {
>  };
>  #endif
>
> +#define MAX_PHYS_PORT_ID_LEN 32
> +
> +/* This structure holds a unique identifier to identify the
> + * physical port used by a netdevice.
> + */
> +struct netdev_phys_port_id {
> +       unsigned char id[MAX_PHYS_PORT_ID_LEN];
> +       unsigned char id_len;
> +};


So an integer (four bytes?) is OK here? does it need to be in certain
byte order?
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