[net-next 3/6] net/mlx5: Increase hairpin buffer size
From: Saeed Mahameed <saeed@kernel.org>
Date: 2021-06-26 07:44:53
Subsystem:
mellanox ethernet driver (mlx5e), mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Tariq Toukan, Mark Bloch, Leon Romanovsky, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Ariel Levkovich <redacted> The max packet size a hairpin queue is able to handle is determined by the total hairpin buffer size divided by 4. Currently the buffer size is set to 32KB which makes the max packet size to be 8KB and doesn't support jumbo frames of size 9KB. This change increases the buffer size to 64KB to increase the max frame size and support 9KB frames. Signed-off-by: Ariel Levkovich <redacted> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> --- drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 8d84d0712c20..629a61e8022f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c@@ -846,7 +846,7 @@ static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv, hash_hairpin_info(peer_id, match_prio)); mutex_unlock(&priv->fs.tc.hairpin_tbl_lock); - params.log_data_size = 15; + params.log_data_size = 16; params.log_data_size = min_t(u8, params.log_data_size, MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz)); params.log_data_size = max_t(u8, params.log_data_size,
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2.31.1