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Miller" Cc: Leon Romanovsky , Jason Gunthorpe , Saeed Mahameed , linux-netdev , RDMA mailing list , Raed Salem Subject: [PATCH mlx5-next 13/17] net/mlx5: Simplify IPsec capabilities logic Date: Sun, 10 Apr 2022 11:28:31 +0300 Message-Id: <97011021fc7b7c5d64dcc21b5a103a97d56a13c5.1649578827.git.leonro@nvidia.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Leon Romanovsky Reduce number of hard-coded IPsec capabilities by making sure that mlx5_ipsec_device_caps() sets only supported bits. As part of this change, remove _accel_ notations from the names and prepare the code to IPsec full offload mode. Reviewed-by: Raed Salem Signed-off-by: Leon Romanovsky --- .../mellanox/mlx5/core/en_accel/ipsec.c | 13 +++-------- .../mellanox/mlx5/core/en_accel/ipsec.h | 9 +++----- .../mlx5/core/en_accel/ipsec_offload.c | 23 ++++++++++--------- 3 files changed, 18 insertions(+), 27 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c index 6f93d749b21a..e138a4d1a9c0 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c @@ -215,7 +215,7 @@ static inline int mlx5e_xfrm_validate_state(struct xfrm_state *x) return -EINVAL; } if (x->props.flags & XFRM_STATE_ESN && - !(mlx5_ipsec_device_caps(priv->mdev) & MLX5_ACCEL_IPSEC_CAP_ESN)) { + !(mlx5_ipsec_device_caps(priv->mdev) & MLX5_IPSEC_CAP_ESN)) { netdev_info(netdev, "Cannot offload ESN xfrm states\n"); return -EINVAL; } @@ -263,7 +263,7 @@ static inline int mlx5e_xfrm_validate_state(struct xfrm_state *x) return -EINVAL; } if (x->props.family == AF_INET6 && - !(mlx5_ipsec_device_caps(priv->mdev) & MLX5_ACCEL_IPSEC_CAP_IPV6)) { + !mlx5_ipsec_device_caps(priv->mdev)) { netdev_info(netdev, "IPv6 xfrm state offload is not supported by this device\n"); return -EINVAL; } @@ -456,12 +456,6 @@ void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv) if (!mlx5_ipsec_device_caps(mdev)) return; - if (!(mlx5_ipsec_device_caps(mdev) & MLX5_ACCEL_IPSEC_CAP_ESP) || - !MLX5_CAP_ETH(mdev, swp)) { - mlx5_core_dbg(mdev, "mlx5e: ESP and SWP offload not supported\n"); - return; - } - mlx5_core_info(mdev, "mlx5e: IPSec ESP acceleration enabled\n"); netdev->xfrmdev_ops = &mlx5e_ipsec_xfrmdev_ops; netdev->features |= NETIF_F_HW_ESP; @@ -475,8 +469,7 @@ void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv) netdev->features |= NETIF_F_HW_ESP_TX_CSUM; netdev->hw_enc_features |= NETIF_F_HW_ESP_TX_CSUM; - if (!(mlx5_ipsec_device_caps(mdev) & MLX5_ACCEL_IPSEC_CAP_LSO) || - !MLX5_CAP_ETH(mdev, swp_lso)) { + if (!MLX5_CAP_ETH(mdev, swp_lso)) { mlx5_core_dbg(mdev, "mlx5e: ESP LSO not supported\n"); return; } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h index eb605a0bc5bb..998a812fbd15 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h @@ -102,12 +102,9 @@ struct mlx5_accel_esp_xfrm_attrs { u8 is_ipv6; }; -enum mlx5_accel_ipsec_cap { - MLX5_ACCEL_IPSEC_CAP_DEVICE = 1 << 0, - MLX5_ACCEL_IPSEC_CAP_ESP = 1 << 1, - MLX5_ACCEL_IPSEC_CAP_IPV6 = 1 << 2, - MLX5_ACCEL_IPSEC_CAP_LSO = 1 << 3, - MLX5_ACCEL_IPSEC_CAP_ESN = 1 << 4, +enum mlx5_ipsec_cap { + MLX5_IPSEC_CAP_CRYPTO = 1 << 0, + MLX5_IPSEC_CAP_ESN = 1 << 1, }; struct mlx5e_priv; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c index d3585c8c876b..1dc8588635e9 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c @@ -7,7 +7,7 @@ u32 mlx5_ipsec_device_caps(struct mlx5_core_dev *mdev) { - u32 caps; + u32 caps = 0; if (!MLX5_CAP_GEN(mdev, ipsec_offload)) return 0; @@ -19,23 +19,24 @@ u32 mlx5_ipsec_device_caps(struct mlx5_core_dev *mdev) MLX5_HCA_CAP_GENERAL_OBJECT_TYPES_IPSEC)) return 0; - if (!MLX5_CAP_IPSEC(mdev, ipsec_crypto_offload) || - !MLX5_CAP_ETH(mdev, insert_trailer)) - return 0; - if (!MLX5_CAP_FLOWTABLE_NIC_TX(mdev, ipsec_encrypt) || !MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ipsec_decrypt)) return 0; - caps = MLX5_ACCEL_IPSEC_CAP_DEVICE | MLX5_ACCEL_IPSEC_CAP_IPV6 | - MLX5_ACCEL_IPSEC_CAP_LSO; + if (!MLX5_CAP_IPSEC(mdev, ipsec_crypto_esp_aes_gcm_128_encrypt) || + !MLX5_CAP_IPSEC(mdev, ipsec_crypto_esp_aes_gcm_128_decrypt) || + !MLX5_CAP_ETH(mdev, swp)) + return 0; - if (MLX5_CAP_IPSEC(mdev, ipsec_crypto_esp_aes_gcm_128_encrypt) && - MLX5_CAP_IPSEC(mdev, ipsec_crypto_esp_aes_gcm_128_decrypt)) - caps |= MLX5_ACCEL_IPSEC_CAP_ESP; + if (MLX5_CAP_IPSEC(mdev, ipsec_crypto_offload) && + MLX5_CAP_ETH(mdev, insert_trailer)) + caps |= MLX5_IPSEC_CAP_CRYPTO; + + if (!caps) + return 0; if (MLX5_CAP_IPSEC(mdev, ipsec_esn)) - caps |= MLX5_ACCEL_IPSEC_CAP_ESN; + caps |= MLX5_IPSEC_CAP_ESN; /* We can accommodate up to 2^24 different IPsec objects * because we use up to 24 bit in flow table metadata