[dpdk-users] does the 'rte_softrss_be' function match NIC RSS value well? please help me.

[Vladimir Medvedkin]

What do you have in tuple? What byte order are ip addresses and ports?

2017-05-30 12:15 GMT+03:00 Heung Sik Choi <hschoi at os.korea.ac.kr>:

> Thanks to reply Vladimir.
>
> I does not custom configure ixgbe, thus default compile and load.
>
> My calculation softrss code is below:
>
> uint8_t rss_key_be[RTE_DIM(default_rss_key)];
>
> uint8_t default_rss_key[] = {
> 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2,
> 0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0,
> 0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4,
> 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c,
> 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa
> };
>
> rte_convert_rss_key((uint32_t *)&default_rss_key,(uint32_t *)rss_key_be,
> RTE_DIM(default_rss_key));
>
> rte_softrss_be((uint32_t *)&tuple, RTE_THASH_V4_L4_LEN, rss_key_be);//
> print it.
>
> i used rte convert_rss_key's implementation code which be base in X86.
>
> i also change the RTE_THASH_V4_L4_LEN parameter with RTE_THASH_V4_L3_LEN.
>
> but doesn't match.
>
> Is it wrong to use it that way?
>
> please help me.
>
>
>
> 2017-05-30 17:01 GMT+09:00 Vladimir Medvedkin <medvedkinv at gmail.com>:
>
>> Hi,
>>
>> How do you configure your NIC and calculate softrss?
>>
>>
>> 2017-05-30 10:47 GMT+03:00 Heung Sik Choi <hschoi at os.korea.ac.kr>:
>>
>>> Hi
>>>
>>> I want to match NIC RSS value with toeplitz hash function value. And I
>>> find
>>> out 'rte_softrss_be' can makes it.
>>>
>>> However, when I experiment it, It doesn't match well. (print two value on
>>> terminal through code level)
>>> I use the environment below:
>>>
>>> CPU: xeon 2213 v2 *2 (NUMA)
>>> NIC: intel 82599ES
>>> kernel 3.16.4
>>> ixgbe driver: 3.22
>>> DPDK 16.11
>>>
>>> Please let me know if you have any insights.
>>>
>>
>>
>>
>> --
>> Regards,
>> Vladimir
>>
>
>


-- 
Regards,
Vladimir