1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 // Copyright (c) 2019 Mellanox Technologies.
3
4 #include "en.h"
5 #include "en_accel/ktls.h"
6 #include "en_accel/ktls_utils.h"
7 #include "en_accel/fs_tcp.h"
8
mlx5e_ktls_add(struct net_device * netdev,struct sock * sk,enum tls_offload_ctx_dir direction,struct tls_crypto_info * crypto_info,u32 start_offload_tcp_sn)9 static int mlx5e_ktls_add(struct net_device *netdev, struct sock *sk,
10 enum tls_offload_ctx_dir direction,
11 struct tls_crypto_info *crypto_info,
12 u32 start_offload_tcp_sn)
13 {
14 struct mlx5e_priv *priv = netdev_priv(netdev);
15 struct mlx5_core_dev *mdev = priv->mdev;
16 int err;
17
18 if (!mlx5e_ktls_type_check(mdev, crypto_info))
19 return -EOPNOTSUPP;
20
21 if (direction == TLS_OFFLOAD_CTX_DIR_TX)
22 err = mlx5e_ktls_add_tx(netdev, sk, crypto_info, start_offload_tcp_sn);
23 else
24 err = mlx5e_ktls_add_rx(netdev, sk, crypto_info, start_offload_tcp_sn);
25
26 return err;
27 }
28
mlx5e_ktls_del(struct net_device * netdev,struct tls_context * tls_ctx,enum tls_offload_ctx_dir direction)29 static void mlx5e_ktls_del(struct net_device *netdev,
30 struct tls_context *tls_ctx,
31 enum tls_offload_ctx_dir direction)
32 {
33 if (direction == TLS_OFFLOAD_CTX_DIR_TX)
34 mlx5e_ktls_del_tx(netdev, tls_ctx);
35 else
36 mlx5e_ktls_del_rx(netdev, tls_ctx);
37 }
38
mlx5e_ktls_resync(struct net_device * netdev,struct sock * sk,u32 seq,u8 * rcd_sn,enum tls_offload_ctx_dir direction)39 static int mlx5e_ktls_resync(struct net_device *netdev,
40 struct sock *sk, u32 seq, u8 *rcd_sn,
41 enum tls_offload_ctx_dir direction)
42 {
43 if (unlikely(direction != TLS_OFFLOAD_CTX_DIR_RX))
44 return -EOPNOTSUPP;
45
46 mlx5e_ktls_rx_resync(netdev, sk, seq, rcd_sn);
47 return 0;
48 }
49
50 static const struct tlsdev_ops mlx5e_ktls_ops = {
51 .tls_dev_add = mlx5e_ktls_add,
52 .tls_dev_del = mlx5e_ktls_del,
53 .tls_dev_resync = mlx5e_ktls_resync,
54 };
55
mlx5e_ktls_build_netdev(struct mlx5e_priv * priv)56 void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv)
57 {
58 struct net_device *netdev = priv->netdev;
59 struct mlx5_core_dev *mdev = priv->mdev;
60
61 if (mlx5_accel_is_ktls_tx(mdev)) {
62 netdev->hw_features |= NETIF_F_HW_TLS_TX;
63 netdev->features |= NETIF_F_HW_TLS_TX;
64 }
65
66 if (mlx5_accel_is_ktls_rx(mdev))
67 netdev->hw_features |= NETIF_F_HW_TLS_RX;
68
69 netdev->tlsdev_ops = &mlx5e_ktls_ops;
70 }
71
mlx5e_ktls_set_feature_rx(struct net_device * netdev,bool enable)72 int mlx5e_ktls_set_feature_rx(struct net_device *netdev, bool enable)
73 {
74 struct mlx5e_priv *priv = netdev_priv(netdev);
75 int err = 0;
76
77 mutex_lock(&priv->state_lock);
78 if (enable)
79 err = mlx5e_accel_fs_tcp_create(priv);
80 else
81 mlx5e_accel_fs_tcp_destroy(priv);
82 mutex_unlock(&priv->state_lock);
83
84 return err;
85 }
86
mlx5e_ktls_init_rx(struct mlx5e_priv * priv)87 int mlx5e_ktls_init_rx(struct mlx5e_priv *priv)
88 {
89 int err = 0;
90
91 if (priv->netdev->features & NETIF_F_HW_TLS_RX)
92 err = mlx5e_accel_fs_tcp_create(priv);
93
94 return err;
95 }
96
mlx5e_ktls_cleanup_rx(struct mlx5e_priv * priv)97 void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv)
98 {
99 if (priv->netdev->features & NETIF_F_HW_TLS_RX)
100 mlx5e_accel_fs_tcp_destroy(priv);
101 }
102