On 01/05/15 12:38, Bruce Richardson wrote: > On Thu, Dec 25, 2014 at 01:46:54AM +0000, Ouyang, Changchun wrote: >> Hi, >> >>> -----Original Message----- >>> From: Vlad Zolotarov [mailto:vladz at cloudius-systems.com] >>> Sent: Wednesday, December 24, 2014 5:59 PM >>> To: Ouyang, Changchun; dev at dpdk.org >>> Subject: Re: [dpdk-dev] [PATCH v3 0/6] Enable VF RSS for Niantic >>> > > >>> On the contrary - it's a very good idea! We use DPDK on Amazon's guests >>> with enhanced networking and we have no access to the PF. We still need to >>> know the RSS redirection rules for our VF pool. From the 82599 spec, chapter >>> 4.6.10.1.1: "redirection table is common to all the pools and only >>> indicates the >>> queue inside the pool to use once the pool is chosen". In that case we need >>> to get the whole 128 entries of the RETA. Is there a reason why we can't >>> have >>> it? >>> >> Due to hardware limitation, VF could not query its own reta table, because >> there is not its own reta, >> The reta table shared by pf and all vfs. >> If you need know it, query them on pf is feasible way to do it. >> > It's not feasible if you only have access to a guest. :-) > IMHO since the guest is seeing the results of the RSS redirection table, > it should be able to query the table, if it wants. It should not, however, > be able to modify the table, as it is owned by the PF.
This is exactly what I meant! ;) The problem at the moment is that upstream PF driver has no VF-PF command for that and I'm in the process of pushing the patch for it. Then it's accepted (and pushed into the Amazon's HV ;)) then DPDK's VF driver may proceed with what u and me are suggesting. Not related question to Intel guys: I can't find a x550 spec in the net. Can anybody tell me where it may be found? ;) > > Regards, > /Bruce >
