[dpdk-users] xl710 NIC doesn't receive 1518 bytes packets

[Don maillist]

Interesting we are using OVS+DPDK with DPDKBOND and LACP with an MTU of
9000. We have not seen any issues except when mixing DPDK and non DPDK
ports on the same NIC. Intel is fixing that but otherwise, we are good. I
do know that Redhat uses 16.02.1 DPDK.

Best Regards,
Don

On Fri, Jan 26, 2018 at 7:52 AM, Alex Kiselev <kiselev99 at gmail.com> wrote:

> Hi Kyle.
>
> 2018-01-26 16:47 GMT+03:00 Kyle Larose <klarose at sandvine.com>:
> > I meant to suggest that, sorry. :(
> >
> > That said, I think a patch was submitted recently to set the mtu of
> slave ports when the bond's mtu is set.
> >
> > http://dpdk.org/browse/dpdk/commit/drivers/net/bonding/
> rte_eth_bond_pmd.c?id=55b58a7374554cd1c86f4a13a0e2f54e9ba6fe4d
> >
> > Are you running with that patch?
>
> No. I wasn't aware of this patch.
> I'll try it. Thanks.
>
> >
> >> -----Original Message-----
> >> From: Alex Kiselev [mailto:kiselev99 at gmail.com]
> >> Sent: Friday, January 26, 2018 8:44 AM
> >> To: Kyle Larose
> >> Cc: users
> >> Subject: Re: [dpdk-users] xl710 NIC doesn't receive 1518 bytes packets
> >>
> >> 2018-01-24 17:14 GMT+03:00 Alex Kiselev <kiselev99 at gmail.com>:
> >> > Hi Kyle.
> >> >
> >> > 2018-01-24 17:01 GMT+03:00 Kyle Larose <klarose at sandvine.com>:
> >> >> Did you set the MTU on the bond port? It has separate configuration
> IIRC.
> >>
> >> I don't see any special API functions for setting MTU of a bonding port
> >> neither in 17.08.1 that I am currently using nor in the latest DPDK
> branch.
> >>
> >> So, I use regular MTU setting function rte_eth_dev_set_mtu() for my bond
> >> port created via command line arguments.
> >> And It doesn't work. 1518 bytes packets are being filtered.
> >>
> >> I tried to hardcode setting MTU for each slave port and it solved the
> >> problem. So, it looks like the problem is the rte_eth_dev_set_mtu() call
> >> that doesn't change MTU of slave ports when it is called for a bonding
> port.
> >>
> >> The described problem exists at least with i40e driver and doesn't show
> up
> >> when I use x520 NICS.
> >>
> >> --
> >> Alex Kiselev
>
>
>
> --
> --
> Kiselev Alexander
>