From 3502b059251517785bd3232a97f56fb239606183 Mon Sep 17 00:00:00 2001 From: Viacheslav Ovsiienko Date: Mon, 5 Aug 2019 13:03:53 +0000 Subject: [PATCH] net/mlx5: fix packet size inline settings This patch fixes the default settings for packet size to inline with Enhanced Multi-Packet Write feature, allowing 256B packets to be inlined with Out-Of-the-Box settings. Fixes: 50724e1bba76 ("net/mlx5: update Tx definitions") Signed-off-by: Viacheslav Ovsiienko Acked-by: Matan Azrad --- doc/guides/nics/mlx5.rst | 2 +- drivers/net/mlx5/mlx5_prm.h | 5 ++--- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst index 46538b8f10..5102bcd366 100644 --- a/doc/guides/nics/mlx5.rst +++ b/doc/guides/nics/mlx5.rst @@ -449,7 +449,7 @@ Run-time configuration and CPU resources are scarce), data inline is not performed by the driver. Assigning ``txqs_min_inline`` with zero always enables the data inline. - The default ``txq_inline_mpw`` value is 188. The specified value may be adjusted + The default ``txq_inline_mpw`` value is 268. The specified value may be adjusted by the driver in order not to exceed the limit (930 bytes) and to provide better WQE space filling without gaps, the adjustment is reflected in the debug log. Due to multiple packets may be included to the same WQE with Enhanced Multi diff --git a/drivers/net/mlx5/mlx5_prm.h b/drivers/net/mlx5/mlx5_prm.h index 4ee6d8948b..d62837ee5e 100644 --- a/drivers/net/mlx5/mlx5_prm.h +++ b/drivers/net/mlx5/mlx5_prm.h @@ -72,9 +72,8 @@ * boundary with accounting the title Control and Ethernet * segments. */ -#define MLX5_EMPW_DEF_INLINE_LEN (3u * MLX5_WQE_SIZE + \ - MLX5_DSEG_MIN_INLINE_SIZE - \ - MLX5_WQE_DSEG_SIZE) +#define MLX5_EMPW_DEF_INLINE_LEN (4u * MLX5_WQE_SIZE + \ + MLX5_DSEG_MIN_INLINE_SIZE) /* * Maximal inline data length sent with enhanced MPW. * Is based on maximal WQE size. -- 2.20.1