Re: [PATCH v2 10/10] selftests/vfio: igb: Use offical IGB headers in selftest driver

[David Matlack <dmatlack@google.com>]

On 2026-05-26 11:54 PM, Josh Hilke wrote:
> Include the offical Intel network driver header files in
> tools/testing/selftests/vfio/lib/drivers/igb/igb.c and refactor the
> driver to directly utilize standard E1000_ prefixed registers and macros
> found from those headers.
> 
> Delete tools/testing/selftests/vfio/lib/drivers/igb/registers.h as it
> only contains duplicate code found in the offical IGB header files.
> 
> Assisted-by: Gemini:gemini-3.1-pro-preview
> Suggested-by: David Matlack <dmatlack@google.com>
> Signed-off-by: Josh Hilke <jrhilke@google.com>
> 
> # Conflicts:
> #	tools/testing/selftests/vfio/lib/drivers/igb/igb.c

This should not be in the commit message.

> ---
>  .../selftests/vfio/lib/drivers/igb/igb.c      | 159 +++++++++---------
>  .../vfio/lib/drivers/igb/registers.h          | 127 --------------
>  tools/testing/selftests/vfio/lib/libvfio.mk   |   1 +
>  3 files changed, 83 insertions(+), 204 deletions(-)
>  delete mode 100644 tools/testing/selftests/vfio/lib/drivers/igb/registers.h

Please fold this into the first commit to avoid adding registers.h only
to then remove it a few patches later.

> -#endif /* _IGB_REGISTERS_H_ */
> diff --git a/tools/testing/selftests/vfio/lib/libvfio.mk b/tools/testing/selftests/vfio/lib/libvfio.mk
> index 1f13cca04348..0075749e2f12 100644
> --- a/tools/testing/selftests/vfio/lib/libvfio.mk
> +++ b/tools/testing/selftests/vfio/lib/libvfio.mk
> @@ -23,6 +23,7 @@ LIBVFIO_O_DIRS := $(shell dirname $(LIBVFIO_O) | uniq)
>  $(shell mkdir -p $(LIBVFIO_O_DIRS))
>  
>  CFLAGS += -I$(LIBVFIO_SRCDIR)/include
> +CFLAGS += -I$(top_srcdir)/drivers/net/ethernet/intel/igb

Please create symlinks to the specific header files you need to include
rather than exposing this entire directory to the VFIO selftests default
include paths.

e.g. Take a look how how the DSA driver does it:

$ ls -l tools/testing/selftests/vfio/lib/drivers/dsa
total 12
-rw-r----- 1 dmatlack primarygroup 11648 Jun 11 21:18 dsa.c
lrwxrwxrwx 1 dmatlack primarygroup    49 Oct  6  2025 registers.h -> ../../../../../../../drivers/dma/idxd/registers.h

$ head -20 tools/testing/selftests/vfio/lib/drivers/dsa/dsa.c
[...]

#include "registers.h"

[...]

>  
>  $(LIBVFIO_O): $(LIBVFIO_OUTPUT)/%.o : $(LIBVFIO_SRCDIR)/%.c
>  	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@
> -- 
> 2.54.0.794.g4f17f83d09-goog
>