net/mlx5e: advertise max RSS indirection table size to ethtool

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Set rxfh_indir_space to the maximum indirection table size the driver
can support: the next power of two above MLX5E_MAX_NUM_CHANNELS times
MLX5E_UNIFORM_SPREAD_RQT_FACTOR.

Without this, ethtool_rxfh_ctxs_can_resize() returns -EINVAL, blocking
non-default RSS contexts from tracking indirection table size changes
when the channel count changes.

Signed-off-by: Yael Chemla <ychemla@nvidia.com>
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260511172719.330490-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Yael Chemla 2026-05-11 20:27:16 +03:00 • committed by Jakub Kicinski

parent f7c35c6685

commit 05ebdbaded

3 changed files with 6 additions and 2 deletions

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2

drivers/net/ethernet/mellanox/mlx5/core/en/rqt.c

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1

drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h

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5

drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c

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