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SubjectRe: [PATCH 3/3] net/mlx5e: don't build RFS without ethernet
On Wednesday 04 May 2016 16:09:16 Saeed Mahameed wrote:
> On Wed, May 4, 2016 at 3:32 PM, Arnd Bergmann <> wrote:
> > The RFS acceleration support in mlx5 is enabled whenever CONFIG_RFS_ACCEL
> > is in use. However, this fails if a user turns off CONFIG_MLX5_CORE_EN,
> > because the rfs code now calls into the ethernet portion of the
> > driver:
> >
> > ERROR: "mlx5e_destroy_flow_table" [drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.ko] undefined!
> >
> Hi Arnd,
> We already posted a fix for this, please see "[PATCH net-next V1
> 01/12] net/mlx5e: Fix aRFS compilation dependency", and give us your
> feedback.

That version looks fine as well. I think it's better to be a little
more explicit as I was, but either way seems fine.

You can also achieve the same thing in yet another way using Makefile
syntax instead of cpp or Kconfig:

mlx5_core-y += wq.o eswitch.o \
en_main.o en_fs.o en_ethtool.o en_tx.o en_rx.o \
en_txrx.o en_clock.o vxlan.o en_tc.o
en_txrx.o en_clock.o vxlan.o en_tc.o en_arfs.o

mlx5_core-$(CONFIG_RFS_ACCEL) += en_arfs.o

If you prefer Maor's version, feel free to add

Acked-by: Arnd Bergmann <>


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