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SubjectRe: [PATCH v5 19/27] IB/Verbs: Use management helper cap_iw_cm()
On 4/21/15 2:39 AM, Michael Wang wrote:
>
> On 04/20/2015 05:51 PM, Tom Tucker wrote:
> [snip]
>>>>> int ib_query_gid(struct ib_device *device,
>>>>> u8 port_num, int index, union ib_gid *gid);
>>>>>
>>>> iWARP devices _must_ support the IWCM so cap_iw_cm() is not really useful.
>>> Sean suggested to add this helper paired with cap_ib_cm(), may be there are
>>> some consideration on maintainability?
>>>
>>> Me too also prefer this way to make the code more readable ;-)
>> It's more consistent, but not necessarily more readable -- if by readability we mean understanding.
>>
>> If the reader knows how the transports work, then the reader would be confused by the addition of a check that is always true. For the reader that doesn't know, the addition of the check implies that the support is optional, which it is not.
> The purpose is to make sure folks understand what we really want to check
> when they reviewing the code :-) and prepared for the further reform which may
> not rely on technology type any more, for example the device could tell core
> layer directly what management it required with a bitmask :-)
Hi Michael,

Thanks for the reply, but my premise was just wrong...I need to review the
whole patch, not just a snippet.

Thanks,
Tom
> Regards,
> Michael Wang
>
>> Tom
>>
>>> Regards,
>>> Michael Wang
>>>
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