From c75e7e599c62c57d210eebb91140802dd81f2b70 Mon Sep 17 00:00:00 2001 From: Yael Chemla Date: Mon, 11 May 2026 20:27:19 +0300 Subject: [PATCH] net/mlx5e: increase RSS indirection table spread factor Increase the RQT uniform spread factor from 2 to 4 so that each channel gets more indirection table entries and traffic is spread more evenly. For num_channels > 64 imbalance drops from up to ~50% to up to ~25%. For 64 or fewer channels the 256 entry minimum already provides at least 4x coverage and the table size is unchanged by this commit. This satisfies the minimum 4x coverage requirement validated by the generic RSS selftest commit 9e3d4dae9832 ("selftests: drv-net: rss: validate min RSS table size"). The 4x spread factor is best-effort and the table size is always capped by the device's log_max_rqt_size capability. Signed-off-by: Yael Chemla Reviewed-by: Nimrod Oren Signed-off-by: Tariq Toukan Link: https://patch.msgid.link/20260511172719.330490-6-tariqt@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h b/drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h index 680700e7437f..c6d0a92b132c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h @@ -7,7 +7,7 @@ #include #define MLX5E_INDIR_MIN_RQT_SIZE (BIT(8)) -#define MLX5E_UNIFORM_SPREAD_RQT_FACTOR 2 +#define MLX5E_UNIFORM_SPREAD_RQT_FACTOR 4 struct mlx5_core_dev;