Re: [dpdk-users] DPDK 2.2 MLX4: problem with number of TX/RX queues

[Harold Demure <harold.demure87@gmail.com>]

Dear Gilad,
   Let me thank you also here for your kind help. I have replied on the
forum.
Regards,
  Harold

2016-02-18 11:31 GMT+01:00 Gilad Berman <giladb@mellanox.com>:

> Harold,
>
> Flow Director features will be supported only on ConnectX-4 (starting from
> MLNX_DPDK version to be released end of Feb and on).
> So sadly you can't use it with mlx4 (ConnectX-3).
>
> I answered also the community question, btw.
>
>
> Gilad Berman | Staff System Engineer | Business Development | Mellanox
> Technologies Ltd.
> Work: +972 52 2554262| 6 Ha’Barzel St. Tel Aviv 6971010, Israel
>
>
> -----Original Message-----
> From: users [mailto:users-bounces@dpdk.org] On Behalf Of Harold Demure
> Sent: Tuesday, February 16, 2016 6:05 PM
> To: Olga Shern <olgas@mellanox.com>
> Cc: users@dpdk.org
> Subject: Re: [dpdk-users] DPDK 2.2 MLX4: problem with number of TX/RX
> queues
>
> Dear Olga and Vincent,
>   thank you for your reply.
> It seems that the problem has now gone away; both with the -j and without
> the -j flag. I will try to backtrace the root cause of the problem and
> report it if I manage to isolate it.
>
> If I may, I would also like to ask your help for a related problem, which
> I have reported also on the mellanox community forum. If you are available,
> you may find my question there [1].
>
> I take the occasion to specifically address Olga Shern because I saw that
> she has already given support on a related topic [2].
> Also, related to [2] but possibly un-related from the questions in [1], I
> am failing to attach a "Perfect Match" filter to my mlx4 NIC, via
>
> rte_eth_dev_filter_ctrl(port_id, RTE_ETH_FILTER_FDIR, RTE_ETH_FILTER_ADD,
> &filter)
>
> Is this an expected behavior, namely, mlx4 does not support (yet) this
> kind of operational mode?
>
> Thank you (and anybody willing to help) for your time.
> Best regards,
>   Harold Demure
>
>
> [1] https://community.mellanox.com/thread/3152
> [2] http://dpdk.org/ml/archives/dev/2015-April/016392.html
>
> 2016-02-15 9:59 GMT+01:00 Olga Shern <olgas@mellanox.com>:
>
> > Hi Harold,
> >
> > DPDK 2.2 with MLNX_OFED that you are using and ConnectX-3 support RSS
> > automatically.
> > You don’t need to configure anything.
> >
> > Looks there is some bug in the compilation, did you compile  with make
> > -j, we saw some issue with it.
> > Can you please try without -j flag.
> >
> > Best Regards,
> > Olga
> >
> > -----Original Message-----
> > From: users [mailto:users-bounces@dpdk.org] On Behalf Of Harold Demure
> > Sent: Thursday, February 11, 2016 11:37 PM
> > To: Vincent Li
> > Cc: users@dpdk.org
> > Subject: Re: [dpdk-users] DPDK 2.2 MLX4: problem with number of TX/RX
> > queues
> >
> > Hello Vincent,
> >   Thank you for your reply. I followed the same reasoning as you did,
> > looking at the source code earlier today.
> >
> > Can you send me a link that explains how to change RX for my NIC?
> > I have been looking around for that, and also performed the steps in
> > the DPDK official guide for MLX4, but apparently nothing changed (at
> > least, the error was still there).
> >
> > In addition, I have to describe a new strange behavior: even *without
> > changing anything rss-wise*, but just enabling the increased debugging
> > verbosity (CONFIG_RTE_LIBRTE_MLX4_DEBUG=y), the error I had suddenly
> > disappeared.
> >
> > I cannot really explain what happened. Can anybody?
> >
> > At this point (with the debug prints), now my code blocks because
> > apparently mlx4 does not support FlowDir, so I have to change a bit my
> > software, which is built to use it.
> >
> > Still, I would love to know what's going on with my rx/tx queues.
> >
> > Thank you.
> > Regards,
> >    Harold
> >
> > 2016-02-11 20:10 GMT+01:00 Vincent Li <vincent.mc.li@gmail.com>:
> >
> > > On Thu, Feb 11, 2016 at 6:24 AM, Non Voglio
> > > <harold.demure87@gmail.com>
> > > wrote:
> > > > Hello,
> > > >   I am new to the DPDK world and I am having some troubles in
> > > > using some code (not written by me).
> > > >
> > > > In particular, I bump into this error when invoking the
> > > rte_eth_dev_configure
> > > > function:
> > > >
> > > > PMD: librte_pmd_mlx4: 0x10a4d2a0: TX queues number update: 0 -> 16
> > > >
> > > > PMD: librte_pmd_mlx4: 0x10a4d2a0: RX queues number update: 0 -> 16
> > > >
> > > > PMD: librte_pmd_mlx4: 0x10a4d2a0: only a single RX queue can be
> > > configured
> > > > when hardware doesn't support RSS
> > > >
> > >
> > > it appears you must enable RSS support to use multiple RX queue
> > >
> > >         if (!priv->hw_rss) {
> > >                 ERROR("%p: only a single RX queue can be configured
> when"
> > >                       " hardware doesn't support RSS",
> > >                       (void *)dev);
> > >                 return EINVAL;
> > >         }
> > >
> > > Vincent
> > >
> >
>