Hi Damjan,
Sorry i just saw your reply. Some how it was buried in a folder and i did not
pay attention.
I don't have the setup now, but i can summarize what i found recently.
1. When using vpp 17.4 with ubuntu 16.04.2 (kernel 4.8), show PCI indicated the
nic using its native driver (ixg40 x710), even when i put the nic in whitelist
of vpp. For comparison, with vpp 17.4 and ubuntu 14.04, same startup.conf had
shown the nic as pass-through interface on vpp and driver as uio_pci_genric.
2. For vpp 17.1 with ubuntu 16.04.2, it will still show as ixg40 x710, if i
just add the PCI to startup.conf as whitelist.
But, after i manually load up uio_pci_genric (modprobe uio_pci_gneric), and ten
restart vpp, the nic will show up as pass-through interface and "show pci" will
show it is using pci_uio. Doing lsmod on host will confirm it is using pci_uio.
The manually loaded uio_pci_generic has 0 user.
I believe this issue is related to the new kernel switching to systemd for
device initialization. Is there any fix available?
3. never mind for the "create host-interface", it shall only work with tap
interface.
Thanks,
Yewei
--------------------------------------------
On Fri, 4/14/17, Damjan Marion (damarion) <damar...@cisco.com> wrote:
Subject: Re: [vpp-dev] whitelist pci pass-through and host interface
To: "Yewei Tang" <yeweit...@yahoo.com>
Cc: "vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io>
Date: Friday, April 14, 2017, 2:43 PM
> On 12 Apr 2017, at 03:57,
Yewei Tang via vpp-dev <vpp-dev@lists.fd.io>
wrote:
>
> Hi
Friends,
> I have some question regarding
pci pass-though for bare metal host interface.
> All following questions are for running
vpp on bare metal ubuntu.
>
> 1. host interface won't showing up.
> As i understand, when i start vpp, it can
see all the host interface that are in down state and not in
host routing table. This is true if i run vpp in a vagrant
box ("show int" shows the down interface of vbox
host). But this was not happening when i ran vpp on bare
metal ubuntu host. is there any additional setting for bare
metal linux?
>
> 2.
Add host interface to vpp by using "create
host-interface <name>"
> The
"create host-interface" command works fine with
veth pair or tap interface. For host physical nic interface,
such as eth2, i can add it to vpp. It show up as host-eth2.
But it seems cannot passing traffic. Is it true the
"create host-interface " command does not suppose
to work with physical interface?
>
> 3. pci passthrough.
>
With kernel 4.4.1, if i add pci number to dpdk white list in
/etc/vpp/startup.conf and bring up vpp, vpp can see the
interface and pass packets. But after upgrade kernel to 4.8,
(ubuntu 16.4.02) even i added the interface pci number to
white list, vpp can not see the pass through interface
anymore.
> Does vpp dpdk support kernel
newer than 4.4.1?
>
Can you share output of "show pci"
command?
>
>
Thanks a lot!
>
>
Yewei
>
> Some
related post on vpp-dev. but i cannot find solution to my
questions.
> https://lists.fd.io/pipermail/vpp-dev/2016-March/000235.html
>
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