On Dec 19, 2014 3:35 AM, "Ouyang, Changchun" <changchun.ouyang at intel.com> wrote: > > My response as below. > > > > From: Vlad Zolotarov [mailto:vladz at cloudius-systems.com] > Sent: Thursday, December 18, 2014 9:06 PM > To: dev at dpdk.org; Ouyang, Changchun > Subject: Re: [PATCH 0/6] Enable VF RSS for Niantic > > > > > > On 12/18/14 12:11, Vlad Zolotarov wrote: >> >> From: Changchun Ouyang <changchun.ouyang at intel.com> >> >> >> >> This patch enables VF RSS for Niantic, which allow each VF having at most 4 queues. >> >> The actual queue number per VF depends on the number of VF: >> >> VF number from 1~32: 4 queues per VF; >> >> VF number from 33~max vf num: 2 queues per VF; >> >> >> >> On host, to enable VF RSS functionality, mq mode should be set as ETH_MQ_RX_VMDQ_RSS >> >> or ETH_MQ_RX_RSS mode, and SRIOV mode should be activated. >> >> It also needs config VF RSS information like hash function, RSS key, RSS key length. > > > This patch series is missing a few things: > > Taking into the consideration the number of Rx queues requested by a user in the rte_eth_dev_configure(). > > Changchun: yes, will have a v2 to consider it, as I say in my previous response.
I must have joined the mailing list after your v2 series. I'll take a look in the web for it. > > dev->dev_ops->reta_query used by a rte_eth_dev_rss_reta_query() is still not initialized for a VF. Thus there is no way to query the RSS table > > Changchun: do you mean query rss table on guest? Of course. Niantic doesn?t have separate reta for a specific vf, the reta is shared by pf and all vf. AFAIK the reta is statically divided between all available functions. So, first of all we need a way to know that is the size of a single VF partition in order to know how many RSS queues may be configured. Then we need an ability to query/set the contents of the corresponding reta partition like we can for PF. > > Do you think of returning all reta contents for each vf make sense? Or any other insight here? > > rte_eth_dev_info_get() returns reta_size == 0 when called for a VF function. > > Changchun: same as above. > > Your insight here are welcome here. > > thanks > > Changchun > >
