linux-kernel - Re: [PATCH net-next 2/2] net: Change TCA_ACT_* to TCA_ID_* to match that of TCA_ID

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Date:   Fri, 8 Feb 2019 09:01:42 +0100
From:   Simon Horman <simon.horman@...ronome.com>
To:     Eli Cohen <eli@...lanox.com>
Cc:     jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, jakub.kicinski@...ronome.com,
        dirk.vandermerwe@...ronome.com, francois.theron@...ronome.com,
        quentin.monnet@...ronome.com, john.hurley@...ronome.com,
        edwin.peer@...ronome.com
Subject: Re: [PATCH net-next 2/2] net: Change TCA_ACT_* to TCA_ID_* to match
 that of TCA_ID_POLICE

On Thu, Feb 07, 2019 at 09:45:49AM +0200, Eli Cohen wrote:
> Modify the kernel users of the TCA_ACT_* macros to use TCA_ID_*. For
> example, use TCA_ID_GACT instead of TCA_ACT_GACT. This will align with
> TCA_ID_POLICE and also differentiates these identifier, used in struct
> tc_action_ops type field, from other macros starting with TCA_ACT_.
> 
> To make things clearer, we name the enum defining the TCA_ID_*
> identifiers and also change the "type" field of struct tc_action to
> id.
> 
> Signed-off-by: Eli Cohen <eli@...lanox.com>
> Acked-by: Jiri Pirko <jiri@...lanox.com>

...

> diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h
> index 7ab55f97e7c4..51a0496f78ea 100644
> --- a/include/uapi/linux/pkt_cls.h
> +++ b/include/uapi/linux/pkt_cls.h
> @@ -85,7 +85,7 @@ enum {
>  #define TCA_ACT_SAMPLE 26
>  
>  /* Action type identifiers*/
> -enum {
> +enum tca_id {
>  	TCA_ID_UNSPEC = 0,
>  	TCA_ID_POLICE = 1,
>  	TCA_ID_GACT = TCA_ACT_GACT,

This change updates the UAPI. It seems to me that it would not
break existing users. But I would like to ask if this has been
given due consideration.

...