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

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

[Heung Sik Choi]

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.

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

[Vladimir Medvedkin]

Hi,

How do you configure your NIC and calculate softrss?


2017-05-30 10:47 GMT+03:00 Heung Sik Choi <hschoi@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

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

[Heung Sik Choi]

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@gmail.com>:

> Hi,
>
> How do you configure your NIC and calculate softrss?
>
>
> 2017-05-30 10:47 GMT+03:00 Heung Sik Choi <hschoi@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
>

Re: [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@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@gmail.com>:
>
>> Hi,
>>
>> How do you configure your NIC and calculate softrss?
>>
>>
>> 2017-05-30 10:47 GMT+03:00 Heung Sik Choi <hschoi@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

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

[Heung Sik Choi]

I insert ip source, ip destination, port source, port destination to the
tuple but sctp_tag is null. But, I think it is not necessary because the
test_thash.c in DPDK souce files shows example of rte_softrss_be and also
sctp_tage is null.

I don't know byte order. How can I check this? can you tell me the way?

Thanks, Vladimir.

2017-05-30 19:01 GMT+09:00 Vladimir Medvedkin <medvedkinv@gmail.com>:

> 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@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@gmail.com>:
>>
>>> Hi,
>>>
>>> How do you configure your NIC and calculate softrss?
>>>
>>>
>>> 2017-05-30 10:47 GMT+03:00 Heung Sik Choi <hschoi@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
>

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

[Vladimir Medvedkin]

How do you insert src and dst ips? Try it with rte_be_to_cpu_32() for
example
tuple.v4.src_addr =rte_be_to_cpu_32(ip_hdr->src_addr)

P.S. https://en.wikipedia.org/wiki/Endianness

2017-05-30 13:28 GMT+03:00 Heung Sik Choi <hschoi@os.korea.ac.kr>:

> I insert ip source, ip destination, port source, port destination to the
> tuple but sctp_tag is null. But, I think it is not necessary because the
> test_thash.c in DPDK souce files shows example of rte_softrss_be and also
> sctp_tage is null.
>
> I don't know byte order. How can I check this? can you tell me the way?
>
> Thanks, Vladimir.
>
> 2017-05-30 19:01 GMT+09:00 Vladimir Medvedkin <medvedkinv@gmail.com>:
>
>> 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@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@gmail.com>:
>>>
>>>> Hi,
>>>>
>>>> How do you configure your NIC and calculate softrss?
>>>>
>>>>
>>>> 2017-05-30 10:47 GMT+03:00 Heung Sik Choi <hschoi@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
>>
>
>


-- 
Regards,
Vladimir

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

[Heung Sik Choi]

Hi,

sorry to be late to reply.

I changed the code which insert src and dst as you teach me, but It didn't
work well.

And then, I have a question that RSS verification value from 82599
Datasheet is really right. I do an experiment. I set two
machines({IPv4(161, 142, 100, 80), IPv4(66, 9, 149, 187),
1766, 2794, 0x323e8fc2, 0x51ccc178}), and I make receiver machine use
Native Linux(3.16.4) and ixgbe(3.22.3). Also I insert printk in ixgbe which
print skb->hash value.

I checked the skb->hash value in dmesg. However, It didn't match with the
value from 82599 Datasheet 7.1.2.8.3 RSS Verification Suite.

Please let me know if you have any insights.