netdev - Re: [PATCH v2 1/2] gtp: rename SGSN netlink attribute

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Date:   Tue, 21 Mar 2017 16:10:26 +0100
From:   Jonas Bonn <jonas@...thpole.se>
To:     Pablo Neira Ayuso <pablo@...filter.org>
Cc:     laforge@...monks.org, netdev@...r.kernel.org
Subject: Re: [PATCH v2 1/2] gtp: rename SGSN netlink attribute

On 03/21/2017 04:07 PM, Pablo Neira Ayuso wrote:
> On Tue, Mar 21, 2017 at 04:04:29PM +0100, Jonas Bonn wrote:
>> diff --git a/include/uapi/linux/gtp.h b/include/uapi/linux/gtp.h
>> index 72a04a0..c51ebb0 100644
>> --- a/include/uapi/linux/gtp.h
>> +++ b/include/uapi/linux/gtp.h
>> @@ -19,7 +19,7 @@ enum gtp_attrs {
>>   	GTPA_LINK,
>>   	GTPA_VERSION,
>>   	GTPA_TID,	/* for GTPv0 only */
>> -	GTPA_SGSN_ADDRESS,
>> +	GTPA_PEER_ADDRESS,	/* Remote GSN peer, either SGSN or GGSN */
> We need here:
>
> #define GTPA_SGSN_ADDRESS GTPA_PEER_ADDRESS
>
> for backward compatibility. Anything that is exposed through uapi
> cannot be changed.

Yes... look a couple of lines further down...

>>   	GTPA_MS_ADDRESS,
>>   	GTPA_FLOW,
>>   	GTPA_NET_NS_FD,
>> @@ -29,5 +29,6 @@ enum gtp_attrs {
>>   	__GTPA_MAX,
>>   };
>>   #define GTPA_MAX (__GTPA_MAX + 1)
>> +#define GTPA_SGSN_ADDRESS GTPA_PEER_ADDRESS /* maintain legacy attr name */

^^^^... there it is! :)

/Jonas
>>   
>>   #endif /* _UAPI_LINUX_GTP_H_ */
>> -- 
>> 2.9.3
>>