Re: VPP on FreeBSD Stable 14.3

Hi folks

Answers below,

On Thu, 2 Oct 2025 at 13:51, Tom Jones <thj@freebsd.org> wrote:
>
>
>
> On Sat, Sep 27, 2025, at 15:40, Tom Smyth wrote:
> > Folks,
> > I was wondering folks who run vpp on FreeBSD,
> > 1) when I run vpp  ssh on the management nic becomes un responsive...
>
> Just to confirm, there isn't an "vpp ssh" command I'm not aware of and you are ssh'ing in?

no its just that the box drops ssh sessions when I start vpp (even
though vpp is not on the interface (vnet (virtio)  (ssh / OS
management via Virtio-nics

and vpp is bound to the Intel Iavf  virtual function nics...
>
>
> > 2) is there a recommended freeBSD /etc/vpp/startup.conf file   that
> > works well for FreeBSD ?
> >
> > i have a virtio NIC for management
> >
>
> virtio was my initial development environment, but with bhyve (and one very short test with vmware).
>
> > Im trying out FreeBSD with VPP inside a PRoxmox Hosted VM with  Intel
> > IOMMU (not virtio-iommu)    8GB RAM 2 sockets 1 core,  assigned to the
> > VM,
> >
>
> Is that linux kvm? Is there a reproduction environment you could point me at that is a little less work than learning what proxmox is?

sorry yes it is Linux KVM with Qemu   and with intel iommu for SR-IOV
>
> >
> > my /boot/loader.conf
> > cat /boot/loader.conf
> > boot_multicons=YES
> > boot_serial=YES
> > comconsole_speed=115200
> > console="comconsole,vidconsole"
> > contigmem_load="YES"
> > nic_uio_load="YES"
> > hw.contigmem.num_buffers=4
> > hw.contigmem.buffer_size=1073741824
> > hw.nic_uio.bdfs="1:0:0,2:0:0"
> >
>
> This seems fine from what I remember.
>
> Could you sketch a picture of how the interfaces are logically connected together/to the vm host?


so   a VM with 2 PCI Virtual Function Nics (for vppp)

and a virtio-nic for management, when I run vpp  with no config  ssh
connections to the management interface drop ... like a resource
exhaustion thing... and it looks like the cpu of the machine (2 cores
) is at 100% ...
>
> I was looking in my git repos to find the documentation I was sure I wrote. Eventually I remembered this article:
> https://freebsdfoundation.org/our-work/journal/browser-based-edition/kernel-development/porting-vpp-to-freebsd-basic-usage/
>
>  If you want to go into more detail, or have a more interactive conversation feel free to contact me off list
happy days i will  follow up off list  (just want to reply on list for
this email to help others that might run into the same issue or
mistakes that I made
>
> Tom
>


-- 
Kindest regards,
Tom Smyth.