Re: Socket Direct Protocol: help (2)

Steve Wise
2010-04-13T20:20:58Z

Tung, Chien Tin wrote:
>>> NE020 supports 4 SGEs. I don't know enough about SDP to know why it is
>>> using this calculation for # of send_sge:
>>>
>>> #define SDP_MAX_RECV_SKB_FRAGS (PAGE_SIZE > 0x8000 ? 1 : 0x8000 / PAGE_SIZE)
>>>
>>>
>>>
>> Chien, does the NE020 support FMRs? I looked at the nes ofed-1.5 code
>> and it appears to do nothing in the map_phys_fmr functions.
>>
>
> We never implemented map_phys_fmr. Is it relevant to the # of SGEs?
>
No, but SDP uses FMRs. I don't think it will run without FMR support.