Re: [rdma-core/srp_daemon PATCH] Correct method field for PathRecord request

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On 4/12/2017 10:18 AM, Honggang LI wrote:
> On Wed, Apr 12, 2017 at 09:34:20AM -0400, Hal Rosenstock wrote:
>> On 4/12/2017 9:29 AM, Honggang LI wrote:
>>> On Tue, Apr 11, 2017 at 09:49:44AM -0600, Jason Gunthorpe wrote:
>>>> On Tue, Apr 11, 2017 at 11:28:53PM +0800, Honggang LI wrote:
>>>>> From: Honggang Li <honli@xxxxxxxxxx>
>>>>>
>>>>> According to InfiniBand Architecture Release 1.2.1, Table 208
>>>>> Example PathRecord Request MAD Header Fields, MADHeader:Method
>>>>> should setup to 0x12 (SubnAdmGetTable()).
>>>>
>>>> That is just an example, Table 192 shows that Get and GetTable are
>>>> both valid query types.
>>>
>>> I don't understand this as "Table 192 PortInfoRecord" seems nothing to
>>> do with PathRecord request.
>>
>> In IBA 1.3 volume 1, it's Table 209 Subnet Administration
>> Attribute/Method Map shows PathRecord methods are Get and GetTable.
>>
> 
> http://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/truescale-infiniband-12300-switch-brief.pdf
> Interoperability
> • Compliant with IBTA* specifications 1.0a, 1.1, 1.2, and 1.2.
> 
> It seems the embedded subnet manager does not support IBA 1.3

It's same for IBA 1.2.1. This part hasn't changed.

>>>>
>>>> I however expect that the SM will fail when using GetTable if the
>>>> query returns more than one result, could that be what is happening?
>>>> When you convert it to GET_TABLE does it return more than one result?
>>>
>>> strace output shows srptools always received MAD packet in 320 bytes. So
>>> the embedded subnet manager only returns one result.
>>
>> What is MAD status ?
> 
> ib_user_mad->status     = 0x0
> 
> I attached the MAD packet dump out with strace. Please see the
> attachments p4.in amd p4.decode.

p4.decode has:
rp_dm_rmpp_sa_mad->method		= 0x81 //IB_MAD_METHOD_GET_RESP
opensm/include/iba/ib_types.h // GetResp() Method (13.4.5)

Proper response to GetTable (0x12) method is GetTableResponse (0x92)
method but this is GetResp (0x81) response.

-- Hal

>>
>> -- Hal
>>
>>>>
>>>> Jason
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