Unable to build igb_uio

Unable to build igb_uio

[David Aldrich]

Hi
I am using DPDK 23.11.1. I need to build and install linux kernel
module igb_uio.

There are instructions here:

https://doc.dpdk.org/dts/gsg/usr_guide/igb_uio.html

that instruct to clone the dpdk-kmods repo:

# git clone http://dpdk.org/git/dpdk-kmods

and they state the contents should be:

# cp -r ./dpdk-kmods/linux/igb_uio /root/dpdk/kernel/linux/
# ls ./dpdk/kernel/linux/
igb_uio  kni  meson.build

the instruction is then to modify:

meson.build

but I don't have meson.build. I see:

$ ls /opt/intel/dpdk-stable-23.11.1/kernel/linux/
compat.h  igb_uio.c  Kbuild  Makefile

which is quite different.

Are there more up-to-date instructions, or do I need to compile with
make directly rather than use meson?

Best regards
David

Re: Unable to build igb_uio

[Oleksandr Nahnybida]

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Hello David,

I  use Make, you can specify a path to the kernel you want to build for
with  make KSRC=/path/to/custom/kernel/source if needed
In the 23.11 release linux/kni folders were removed because kni was
deprecated.
https://github.com/DPDK/dpdk/commit/a52d472c5c948d2af8da6ae97f1d5593bcafa002

Best Regards,
Oleksandr

On Fri, Jul 26, 2024 at 6:04 PM David Aldrich <david.aldrich.ntml@gmail.com>
wrote:

> Hi
> I am using DPDK 23.11.1. I need to build and install linux kernel
> module igb_uio.
>
> There are instructions here:
>
> https://doc.dpdk.org/dts/gsg/usr_guide/igb_uio.html
>
> that instruct to clone the dpdk-kmods repo:
>
> # git clone http://dpdk.org/git/dpdk-kmods
>
> and they state the contents should be:
>
> # cp -r ./dpdk-kmods/linux/igb_uio /root/dpdk/kernel/linux/
> # ls ./dpdk/kernel/linux/
> igb_uio  kni  meson.build
>
> the instruction is then to modify:
>
> meson.build
>
> but I don't have meson.build. I see:
>
> $ ls /opt/intel/dpdk-stable-23.11.1/kernel/linux/
> compat.h  igb_uio.c  Kbuild  Makefile
>
> which is quite different.
>
> Are there more up-to-date instructions, or do I need to compile with
> make directly rather than use meson?
>
> Best regards
> David
>

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Re: Unable to build igb_uio

[Stephen Hemminger]

On Fri, 26 Jul 2024 16:04:07 +0100
David Aldrich <david.aldrich.ntml@gmail.com> wrote:

> Hi
> I am using DPDK 23.11.1. I need to build and install linux kernel
> module igb_uio.

Are you sure? igb_uio has been deprecated in favor of vfio_pci.
Unless you are on a really old kernel, there is no longer a need for igb_uio.

Re: Unable to build igb_uio

[David Aldrich]

Hi Stephen and Oleksandr

Thanks for your replies.

I guess the documentation I'm looking at is out-of-date, but the
Broadcom app note I'm looking at suggests testing with testpmd, but
first binding with:

usertools/dpdk-devbind.py -b igb_uio <PCI Device ID>

Given igb_uio is deprecated, is this binding step still required and,
if so, what parameters are now required?

Best regards
David

On Fri, Jul 26, 2024 at 6:30 PM Stephen Hemminger
<stephen@networkplumber.org> wrote:
>
> On Fri, 26 Jul 2024 16:04:07 +0100
> David Aldrich <david.aldrich.ntml@gmail.com> wrote:
>
> > Hi
> > I am using DPDK 23.11.1. I need to build and install linux kernel
> > module igb_uio.
>
> Are you sure? igb_uio has been deprecated in favor of vfio_pci.
> Unless you are on a really old kernel, there is no longer a need for igb_uio.

Re: Unable to build igb_uio

[Oleksandr Nahnybida]

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Yes, it is required, replace igb_uio with vfio-pci,
I'd recommend reading this doc
https://doc.dpdk.org/guides/linux_gsg/linux_drivers.html#linux-gsg-binding-kernel

On Mon, Jul 29, 2024 at 2:02 PM David Aldrich <david.aldrich.ntml@gmail.com>
wrote:

> Hi Stephen and Oleksandr
>
> Thanks for your replies.
>
> I guess the documentation I'm looking at is out-of-date, but the
> Broadcom app note I'm looking at suggests testing with testpmd, but
> first binding with:
>
> usertools/dpdk-devbind.py -b igb_uio <PCI Device ID>
>
> Given igb_uio is deprecated, is this binding step still required and,
> if so, what parameters are now required?
>
> Best regards
> David
>
> On Fri, Jul 26, 2024 at 6:30 PM Stephen Hemminger
> <stephen@networkplumber.org> wrote:
> >
> > On Fri, 26 Jul 2024 16:04:07 +0100
> > David Aldrich <david.aldrich.ntml@gmail.com> wrote:
> >
> > > Hi
> > > I am using DPDK 23.11.1. I need to build and install linux kernel
> > > module igb_uio.
> >
> > Are you sure? igb_uio has been deprecated in favor of vfio_pci.
> > Unless you are on a really old kernel, there is no longer a need for
> igb_uio.
>

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Re: Unable to build igb_uio

[David Aldrich]

Thanks for your answer.

Best regards
David

On Mon, Jul 29, 2024 at 12:27 PM Oleksandr Nahnybida
<oleksandrn@interfacemasters.com> wrote:
>
> Yes, it is required, replace igb_uio with vfio-pci,
> I'd recommend reading this doc https://doc.dpdk.org/guides/linux_gsg/linux_drivers.html#linux-gsg-binding-kernel
>
> On Mon, Jul 29, 2024 at 2:02 PM David Aldrich <david.aldrich.ntml@gmail.com> wrote:
>>
>> Hi Stephen and Oleksandr
>>
>> Thanks for your replies.
>>
>> I guess the documentation I'm looking at is out-of-date, but the
>> Broadcom app note I'm looking at suggests testing with testpmd, but
>> first binding with:
>>
>> usertools/dpdk-devbind.py -b igb_uio <PCI Device ID>
>>
>> Given igb_uio is deprecated, is this binding step still required and,
>> if so, what parameters are now required?
>>
>> Best regards
>> David
>>
>> On Fri, Jul 26, 2024 at 6:30 PM Stephen Hemminger
>> <stephen@networkplumber.org> wrote:
>> >
>> > On Fri, 26 Jul 2024 16:04:07 +0100
>> > David Aldrich <david.aldrich.ntml@gmail.com> wrote:
>> >
>> > > Hi
>> > > I am using DPDK 23.11.1. I need to build and install linux kernel
>> > > module igb_uio.
>> >
>> > Are you sure? igb_uio has been deprecated in favor of vfio_pci.
>> > Unless you are on a really old kernel, there is no longer a need for igb_uio.