netmap custom RSS and custom packet info

[Adrian Chadd]

Hi,

Turns out there are a class of symmetric RSS Toeplitz keys. Use google
to find the paper. :)


-a


On 29 June 2015 at 10:19, Slawa Olhovchenkov <slw at zxy.spb.ru> wrote:
> On Mon, Jun 29, 2015 at 10:07:15AM -0700, Navdeep Parhar wrote:
>
>> On 06/29/2015 08:17, Slawa Olhovchenkov wrote:
>> ...
>> > b) custom RSS. Modern NIC have RSS poorly interoperable with packet
>> > analysing: packets from same flow, but different direction placed in
>> > different queue, ...
>>
>> This is default behavior because the default hash (Toeplitz) is not
>> symmetrical.  There are modern NICs that do support other, symmetrical
>> hashes.
>
> Anyway this is still hardware-depended.
> I am don't see symmetrical hashes for 1G/10G Intel cards.
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