[ofa-general] Re: dapl attribute bug

[Steve Wise]

Davis, Arlin R wrote:
>  
>
>   
>> The DAPL dat_ia_attr->max_lmr_block_size is a u32, yet the dapl code 
>> maps this to the linux ib_device_attr->max_mr_size which is u64.
>>
>> This causes dapltest to fail in some cases when running over chelsio 
>> which sets max_mr_size to 0x100000000 (4GB).  The dapl code truncates 
>> the value to 0. See dapl/openib_cma/dapl_ib_util.c.
>>
>> I'm not sure what the fix should be, but maybe the dapl code 
>> should set 
>> anything over 32 bits to 0xffffffff?
>>
>>     
>
> This attribute changed with DAT 2.0 to match the 32-bit ibv_sge
> length field. Since there are no direct max lmr segments mappings
> I will need add some checks when setting max_lmr_block_size from
> max_mr_size. Thanks.
>
> -arlin

I'll test your fix when its ready.  Lemme know.


Steve.