Re: [dpdk-dev] [DPDK_KMODS v4] linux/igb_uio: add Makefile to build the kernel module

["Govindharajan, Hariprasad" <hariprasad.govindharajan@intel.com>]

> -----Original Message-----
> From: Luca Boccassi <bluca@debian.org>
> Sent: Thursday, October 29, 2020 10:16 AM
> To: Govindharajan, Hariprasad <hariprasad.govindharajan@intel.com>;
> dev@dpdk.org
> Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; Burakov, Anatoly
> <anatoly.burakov@intel.com>
> Subject: Re: [dpdk-dev] [DPDK_KMODS v4] linux/igb_uio: add Makefile to
> build the kernel module
> 
> On Thu, 2020-10-08 at 10:40 +0100, Hariprasad Govindharajan wrote:
> > With DPDK 20.11 release, the igb_uio module is no more part of DPDK.
> > There are use cases where this module is required, for example while
> > testing the virtual ports in OvS, the virtual ports are bound to
> > igb_uio module inside a VM. So, this patch provides a Makefile which
> > can be used to build this module and use as needed.
> >
> > Before building this module, the user is expected to build the DPDK
> > using meson build system and make sure that the required libraries are
> > installed in the path /usr/local
> >
> > Signed-off-by: Hariprasad Govindharajan
> > <hariprasad.govindharajan@intel.com>
> > ---
> > This patch will be part of dpdk-kmods repo
> > https://git.dpdk.org/dpdk-kmods/
> > ---
> > v4:
> > Corrected the indentation
> > v3:
> > Edited the commit message and corrected the mistakes in the variable
> > definition
> > v2:
> > Added more information to the commit message
> > ---
> >  linux/igb_uio/Makefile | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> >  create mode 100644 linux/igb_uio/Makefile
> >
> > diff --git a/linux/igb_uio/Makefile b/linux/igb_uio/Makefile new file
> > mode 100644 index 0000000..45dbe42
> > --- /dev/null
> > +++ b/linux/igb_uio/Makefile
> > @@ -0,0 +1,8 @@
> > +DPDK_HEADERS ?= /usr/local/include
> 
> Please don't hard-code values that are provided programmatically. Use
> pkgconfing instead:
> 
> $(shell pkg-config --variable=includedir libdpdk)
> 
> > +RTE_KERNELDIR ?= /lib/modules/`uname -r`/build
> 
> This is not a dpdk specific location so it doesn't need an RTE prefix.
> While there isn't a unique way of calling this, the most common name I see
> being used is KSRC.
> 
> > +
> > +all:
> > +	make EXTRA_CFLAGS="-I $(DPDK_HEADERS)" -C $(RTE_KERNELDIR)/
> M=$(PWD)
> > +
> > +clean:
> > +	make -C $(RTE_KERNELDIR)/ M=$(PWD) clean
> 
> --
> Kind regards,
> Luca Boccassi
[Govindharajan, Hariprasad] We are sending another patch by removing the DPDK dependency to build the igb_uio module

Regards,
G Hariprasad