[dpdk-dev] Does DPDK i40e driver support 'Toeplitz hash'

[dpdk-dev] Does DPDK i40e driver support 'Toeplitz hash'

[ALeX Wang]

Hi,

We want to use 'Toeplitz hash' for RSS hash on our server equipped with
'Intel X710-DA4' card.

However, seemed that we hit the exact same issue as this:

   Why only rx queue "0" can receive network packet by i40e NIC
   http://dpdk.org/ml/archives/dev/2015-July/022453.html

...
We are using the v16.11 release and would like to confirm if the issue above
has been address.  If so, could anyone post here how to configure?

Appreciate,
Alex Wang,

Re: [dpdk-dev] Does DPDK i40e driver support 'Toeplitz hash'

[Ferruh Yigit]

On 12/12/2016 6:31 AM, ALeX Wang wrote:
> Hi,
> 
> We want to use 'Toeplitz hash' for RSS hash on our server equipped with
> 'Intel X710-DA4' card.
> 
> However, seemed that we hit the exact same issue as this:
> 
>    Why only rx queue "0" can receive network packet by i40e NIC
>    http://dpdk.org/ml/archives/dev/2015-July/022453.html
> 
> ...
> We are using the v16.11 release and would like to confirm if the issue above
> has been address.  If so, could anyone post here how to configure?

CC'ing i40e maintainers:
Jingjing Wu <jingjing.wu@intel.com>; Helin Zhang <helin.zhang@intel.com>

> 
> Appreciate,
> Alex Wang,
> 

Re: [dpdk-dev] Does DPDK i40e driver support 'Toeplitz hash'

[Wu, Jingjing]

> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Thursday, January 12, 2017 7:59 PM
> To: ALeX Wang <ee07b291@gmail.com>; dev@dpdk.org
> Cc: Keith Amidon <keith@awakenetworks.com>; Wu, Jingjing
> <jingjing.wu@intel.com>; Zhang, Helin <helin.zhang@intel.com>
> Subject: Re: [dpdk-dev] Does DPDK i40e driver support 'Toeplitz hash'
> 
> On 12/12/2016 6:31 AM, ALeX Wang wrote:
> > Hi,
> >
> > We want to use 'Toeplitz hash' for RSS hash on our server equipped
> > with 'Intel X710-DA4' card.
> >
Yes, it is supported.
For the configuration, you can refer to the implementation of command set_hash_global_config in testpmd example.

> > However, seemed that we hit the exact same issue as this:
> >
> >    Why only rx queue "0" can receive network packet by i40e NIC
> >    http://dpdk.org/ml/archives/dev/2015-July/022453.html
> >
> > ...
> > We are using the v16.11 release and would like to confirm if the issue
> > above has been address.  If so, could anyone post here how to configure?
> 

Different requirement may require different configuration.
For example, you'd like to enable RSS on IP packets, you need to set

struct rte_eth_conf to be like
{
	.rxmode = {
		.mq_mode = ETH_MQ_RX_RSS,
	},
	.rx_adv_conf = {
		.rss_conf = {
			.rss_key = NULL,
			.rss_hf = ETH_RSS_IP,
		},
	},
};

This is also to be found in dpdk's examples, such like testpmd and l3fwd.

Thanks
Jingjing

> CC'ing i40e maintainers:
> Jingjing Wu <jingjing.wu@intel.com>; Helin Zhang <helin.zhang@intel.com>
> 
> >
> > Appreciate,
> > Alex Wang,
> >