[dpdk-stable] [PATCH v2 1/5] net/virtio: add initial RSS support

[Maxime Coquelin]

On 9/22/21 13:20, Andrew Rybchenko wrote:
> On 9/22/21 12:57 PM, Maxime Coquelin wrote:
>> Provide the capability to update the hash key, hash types
>> and RETA table on the fly (without needing to stop/start
>> the device). However, the key length and the number of RETA
>> entries are fixed to 40B and 128 entries respectively. This
>> is done in order to simplify the design, but may be
>> revisited later as the Virtio spec provides this
>> flexibility.
>>
>> Note that only VIRTIO_NET_F_RSS support is implemented,
>> VIRTIO_NET_F_HASH_REPORT, which would enable reporting the
>> packet RSS hash calculated by the device into mbuf.rss, is
>> not yet supported.
>>
>> Regarding the default RSS configuration, it has been
>> chosen to use the default Intel ixgbe key as default key,
>> and default RETA is a simple modulo between the hash and
>> the number of Rx queues.
>>
>> Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> 
> RSS may be configured on rte_eth_dev_configure() stage
> using eth_conf->rx_adv_conf.rss_conf. It looks like the
> patch does not handle it.
> 

Good catch, I indeed missed that part.
I'll post a v3 including its support.

Thanks,
Maxime