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authorHans Petter Selasky <hselasky@FreeBSD.org>2023-04-18 11:12:32 +0000
committerHans Petter Selasky <hselasky@FreeBSD.org>2023-04-30 06:56:19 +0000
commit6148777d8692c4f31df011babe4deb16f308292b (patch)
tree20d14e507da3f2e8cca5a661595fcd355cc6d28b
parent61dd6a2ea1aa6349598bb1cc09976a4c76109ce7 (diff)
downloadsrc-6148777d8692c4f31df011babe4deb16f308292b.tar.gz
src-6148777d8692c4f31df011babe4deb16f308292b.zip
mlx5en(4): Explain why CQE zipping is off.
Sponsored by: NVIDIA Networking (cherry picked from commit 6bd4bb9bdbadb76c5502c7972df9f525b909e2f5)
-rw-r--r--sys/dev/mlx5/mlx5_en/mlx5_en_main.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/dev/mlx5/mlx5_en/mlx5_en_main.c b/sys/dev/mlx5/mlx5_en/mlx5_en_main.c
index 7b754d901beb..97dcc04d7ae8 100644
--- a/sys/dev/mlx5/mlx5_en/mlx5_en_main.c
+++ b/sys/dev/mlx5/mlx5_en/mlx5_en_main.c
@@ -3841,9 +3841,10 @@ mlx5e_build_ifp_priv(struct mlx5_core_dev *mdev,
priv->params.lro_wqe_sz = MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;
/*
- * CQE zipping is currently defaulted to off. when it won't
- * anymore we will consider the HW capability:
- * "!!MLX5_CAP_GEN(mdev, cqe_compression)"
+ * CQE zipping is off, because the per-packet 32-bit Toeplitz hash
+ * is then not supported. The 32-bit Toeplitz hash is needed to
+ * correctly demultiplex incoming traffic into the expected
+ * network queues.
*/
priv->params.cqe_zipping_en = false;