1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
// Copyright (c) 2019 Mellanox Technologies.
#include "en.h"
#include "lib/mlx5.h"
#include "en_accel/ktls.h"
#include "en_accel/ktls_utils.h"
#include "en_accel/fs_tcp.h"
int mlx5_ktls_create_key(struct mlx5_core_dev *mdev,
struct tls_crypto_info *crypto_info,
u32 *p_key_id)
{
u32 sz_bytes;
void *key;
switch (crypto_info->cipher_type) {
case TLS_CIPHER_AES_GCM_128: {
struct tls12_crypto_info_aes_gcm_128 *info =
(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
key = info->key;
sz_bytes = sizeof(info->key);
break;
}
case TLS_CIPHER_AES_GCM_256: {
struct tls12_crypto_info_aes_gcm_256 *info =
(struct tls12_crypto_info_aes_gcm_256 *)crypto_info;
key = info->key;
sz_bytes = sizeof(info->key);
break;
}
default:
return -EINVAL;
}
return mlx5_create_encryption_key(mdev, key, sz_bytes,
MLX5_ACCEL_OBJ_TLS_KEY,
p_key_id);
}
void mlx5_ktls_destroy_key(struct mlx5_core_dev *mdev, u32 key_id)
{
mlx5_destroy_encryption_key(mdev, key_id);
}
static int 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)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *mdev = priv->mdev;
int err;
if (!mlx5e_ktls_type_check(mdev, crypto_info))
return -EOPNOTSUPP;
if (direction == TLS_OFFLOAD_CTX_DIR_TX)
err = mlx5e_ktls_add_tx(netdev, sk, crypto_info, start_offload_tcp_sn);
else
err = mlx5e_ktls_add_rx(netdev, sk, crypto_info, start_offload_tcp_sn);
return err;
}
static void mlx5e_ktls_del(struct net_device *netdev,
struct tls_context *tls_ctx,
enum tls_offload_ctx_dir direction)
{
if (direction == TLS_OFFLOAD_CTX_DIR_TX)
mlx5e_ktls_del_tx(netdev, tls_ctx);
else
mlx5e_ktls_del_rx(netdev, tls_ctx);
}
static int mlx5e_ktls_resync(struct net_device *netdev,
struct sock *sk, u32 seq, u8 *rcd_sn,
enum tls_offload_ctx_dir direction)
{
if (unlikely(direction != TLS_OFFLOAD_CTX_DIR_RX))
return -EOPNOTSUPP;
mlx5e_ktls_rx_resync(netdev, sk, seq, rcd_sn);
return 0;
}
static const struct tlsdev_ops mlx5e_ktls_ops = {
.tls_dev_add = mlx5e_ktls_add,
.tls_dev_del = mlx5e_ktls_del,
.tls_dev_resync = mlx5e_ktls_resync,
};
bool mlx5e_is_ktls_rx(struct mlx5_core_dev *mdev)
{
u8 max_sq_wqebbs = mlx5e_get_max_sq_wqebbs(mdev);
if (is_kdump_kernel() || !MLX5_CAP_GEN(mdev, tls_rx))
return false;
/* Check the possibility to post the required ICOSQ WQEs. */
if (WARN_ON_ONCE(max_sq_wqebbs < MLX5E_TLS_SET_STATIC_PARAMS_WQEBBS))
return false;
if (WARN_ON_ONCE(max_sq_wqebbs < MLX5E_TLS_SET_PROGRESS_PARAMS_WQEBBS))
return false;
if (WARN_ON_ONCE(max_sq_wqebbs < MLX5E_KTLS_GET_PROGRESS_WQEBBS))
return false;
return true;
}
void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv)
{
struct net_device *netdev = priv->netdev;
struct mlx5_core_dev *mdev = priv->mdev;
if (!mlx5e_is_ktls_tx(mdev) && !mlx5e_is_ktls_rx(mdev))
return;
if (mlx5e_is_ktls_tx(mdev)) {
netdev->hw_features |= NETIF_F_HW_TLS_TX;
netdev->features |= NETIF_F_HW_TLS_TX;
}
if (mlx5e_is_ktls_rx(mdev))
netdev->hw_features |= NETIF_F_HW_TLS_RX;
netdev->tlsdev_ops = &mlx5e_ktls_ops;
}
int mlx5e_ktls_set_feature_rx(struct net_device *netdev, bool enable)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
int err = 0;
mutex_lock(&priv->state_lock);
if (enable)
err = mlx5e_accel_fs_tcp_create(priv->fs);
else
mlx5e_accel_fs_tcp_destroy(priv->fs);
mutex_unlock(&priv->state_lock);
return err;
}
int mlx5e_ktls_init_rx(struct mlx5e_priv *priv)
{
int err;
if (!mlx5e_is_ktls_rx(priv->mdev))
return 0;
priv->tls->rx_wq = create_singlethread_workqueue("mlx5e_tls_rx");
if (!priv->tls->rx_wq)
return -ENOMEM;
if (priv->netdev->features & NETIF_F_HW_TLS_RX) {
err = mlx5e_accel_fs_tcp_create(priv->fs);
if (err) {
destroy_workqueue(priv->tls->rx_wq);
return err;
}
}
return 0;
}
void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv)
{
if (!mlx5e_is_ktls_rx(priv->mdev))
return;
if (priv->netdev->features & NETIF_F_HW_TLS_RX)
mlx5e_accel_fs_tcp_destroy(priv->fs);
destroy_workqueue(priv->tls->rx_wq);
}
int mlx5e_ktls_init(struct mlx5e_priv *priv)
{
struct mlx5e_tls *tls;
if (!mlx5e_is_ktls_device(priv->mdev))
return 0;
tls = kzalloc(sizeof(*tls), GFP_KERNEL);
if (!tls)
return -ENOMEM;
priv->tls = tls;
return 0;
}
void mlx5e_ktls_cleanup(struct mlx5e_priv *priv)
{
kfree(priv->tls);
priv->tls = NULL;
}
|
