Date: Thu, 16 May 2019 17:23:36 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r347813 - stable/11/sys/dev/mlx5/mlx5_en Message-ID: <201905161723.x4GHNaJ7004674@repo.freebsd.org>
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Author: hselasky Date: Thu May 16 17:23:36 2019 New Revision: 347813 URL: https://svnweb.freebsd.org/changeset/base/347813 Log: MFC r347263: Disable CQE zipping by default in mlx5en(4). After doing performance measurements, it seems like CQE zipping doesn't have any significant benefit. Moreover, we know that this feature is disabled by default on other operating systems (Linux for example). Submitted by: slavash@ Sponsored by: Mellanox Technologies Modified: stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_main.c ============================================================================== --- stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Thu May 16 17:22:57 2019 (r347812) +++ stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Thu May 16 17:23:36 2019 (r347813) @@ -3061,7 +3061,12 @@ mlx5e_build_ifp_priv(struct mlx5_core_dev *mdev, priv->params.hw_lro_en = false; priv->params.lro_wqe_sz = MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ; - priv->params.cqe_zipping_en = !!MLX5_CAP_GEN(mdev, cqe_compression); + /* + * CQE zipping is currently defaulted to off. when it won't + * anymore we will consider the HW capability: + * "!!MLX5_CAP_GEN(mdev, cqe_compression)" + */ + priv->params.cqe_zipping_en = false; priv->mdev = mdev; priv->params.num_channels = num_comp_vectors;
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