[dpdk-users] Support for more RSS hash types in vmxnet3

[Jay Miller <jay.miller@oracle.com>]

It's clear that the vmxnet3 driver (even as of 18.08) supports just a 
subset of RSS hash types:

#define VMXNET3_RSS_OFFLOAD_ALL ( \
     ETH_RSS_IPV4 | \
     ETH_RSS_NONFRAG_IPV4_TCP | \
     ETH_RSS_IPV6 | \
     ETH_RSS_NONFRAG_IPV6_TCP)

Are there plans to add support for other hash types (like 
ETH_RSS_NONFRAG_IPV4_UDP), or is this an architectural limitation of 
vmxnet3?

The documentation could be more explicit about these limitations:

>>
>>     36.2. Features and Limitations of VMXNET3 PMD
>>
>> In release 1.6.0, the VMXNET3 PMD provides the basic functionality of 
>> packet reception and transmission. There are several options 
>> available for filtering packets at VMXNET3 device level including:
>>
>>  1. *MAC Address based filtering*:
>>       * Unicast, Broadcast, All Multicast modes - SUPPORTED BY DEFAULT
>>       * Multicast with Multicast Filter table - NOT SUPPORTED
>>       * Promiscuous mode - SUPPORTED
>>       * *RSS based load balancing between queues - SUPPORTED*
>>
>

Thanks,
J

-- 
Jay Miller | Mobile: +1.781.258.7446
Oracle Communications Global Business Unit
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