netdev - Re: [PATCH net-next] rds: transport module should be auto loaded when transport is set

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Message-ID: <4f86d778-1f6b-d533-c062-c78daa257829@oracle.com>
Date:   Mon, 1 Jun 2020 09:59:30 -0700
From:   Rao Shoaib <rao.shoaib@...cle.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        somasundaram.krishnasamy@...cle.com
Subject: Re: [PATCH net-next] rds: transport module should be auto loaded when
 transport is set


On 5/29/20 4:41 PM, David Miller wrote:
> From: rao.shoaib@...cle.com
> Date: Wed, 27 May 2020 01:17:42 -0700
>
>> diff --git a/include/uapi/linux/rds.h b/include/uapi/linux/rds.h
>> index cba368e55863..7273c681e6c1 100644
>> --- a/include/uapi/linux/rds.h
>> +++ b/include/uapi/linux/rds.h
>> @@ -64,7 +64,7 @@
>>   
>>   /* supported values for SO_RDS_TRANSPORT */
>>   #define	RDS_TRANS_IB	0
>> -#define	RDS_TRANS_IWARP	1
>> +#define	RDS_TRANS_GAP	1
>>   #define	RDS_TRANS_TCP	2
>>   #define RDS_TRANS_COUNT	3
>>   #define	RDS_TRANS_NONE	(~0)
> You can't break user facing UAPI like this, sorry.

I was hoping that this could be considered an exception as IWARP has 
been deprecated for almost a decade and there is no current product 
using it. With the change any old binary will continue to work, a new 
compilation fill fail so that the code can be examined, otherwise we 
will never be able to reuse this number.

If the above is not acceptable I can revert this part of the change.

Shoaib