github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-27 09:36:22 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

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

Browse Source 
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>
This commit is contained in:
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/mellanox/mlx5/core/en/rqt.c
View File

@ -168,8 +168,6 @@ int mlx5e_rqt_init_indir(struct mlx5e_rqt *rqt, struct mlx5_core_dev *mdev,
return err;
}
#define MLX5E_UNIFORM_SPREAD_RQT_FACTOR 2
u32 mlx5e_rqt_size(struct mlx5_core_dev *mdev, unsigned int num_channels)
{
u32 rqt_size = max_t(u32, MLX5E_INDIR_MIN_RQT_SIZE,

1
drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h
View File

@ -7,6 +7,7 @@
#include <linux/kernel.h>
#define MLX5E_INDIR_MIN_RQT_SIZE (BIT(8))
#define MLX5E_UNIFORM_SPREAD_RQT_FACTOR 2
struct mlx5_core_dev;

5
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -45,6 +45,10 @@
#define LANES_UNKNOWN 0
#define MLX5E_MAX_INDIR_RQT_SIZE \
roundup_pow_of_two(MLX5E_MAX_NUM_CHANNELS * \
MLX5E_UNIFORM_SPREAD_RQT_FACTOR)
void mlx5e_ethtool_get_drvinfo(struct mlx5e_priv *priv,
struct ethtool_drvinfo *drvinfo)
{
@ -2692,6 +2696,7 @@ const struct ethtool_ops mlx5e_ethtool_ops = {
.supported_input_xfrm = RXH_XFRM_SYM_OR_XOR,
.supported_ring_params = ETHTOOL_RING_USE_TCP_DATA_SPLIT |
ETHTOOL_RING_USE_HDS_THRS,
.rxfh_indir_space = MLX5E_MAX_INDIR_RQT_SIZE,
.get_drvinfo = mlx5e_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_link_ext_state = mlx5e_get_link_ext_state,