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
|
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
#include "funeth.h"
#include "funeth_ktls.h"
static int fun_admin_ktls_create(struct funeth_priv *fp, unsigned int id)
{
struct fun_admin_ktls_create_req req = {
.common = FUN_ADMIN_REQ_COMMON_INIT2(FUN_ADMIN_OP_KTLS,
sizeof(req)),
.subop = FUN_ADMIN_SUBOP_CREATE,
.id = cpu_to_be32(id),
};
return fun_submit_admin_sync_cmd(fp->fdev, &req.common, NULL, 0, 0);
}
static int fun_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 funeth_priv *fp = netdev_priv(netdev);
struct fun_admin_ktls_modify_req req = {
.common = FUN_ADMIN_REQ_COMMON_INIT2(FUN_ADMIN_OP_KTLS,
sizeof(req)),
.subop = FUN_ADMIN_SUBOP_MODIFY,
.id = cpu_to_be32(fp->ktls_id),
.tcp_seq = cpu_to_be32(start_offload_tcp_sn),
};
struct fun_admin_ktls_modify_rsp rsp;
struct fun_ktls_tx_ctx *tx_ctx;
int rc;
if (direction != TLS_OFFLOAD_CTX_DIR_TX)
return -EOPNOTSUPP;
if (crypto_info->version == TLS_1_2_VERSION)
req.version = FUN_KTLS_TLSV2;
else
return -EOPNOTSUPP;
switch (crypto_info->cipher_type) {
case TLS_CIPHER_AES_GCM_128: {
struct tls12_crypto_info_aes_gcm_128 *c = (void *)crypto_info;
req.cipher = FUN_KTLS_CIPHER_AES_GCM_128;
memcpy(req.key, c->key, sizeof(c->key));
memcpy(req.iv, c->iv, sizeof(c->iv));
memcpy(req.salt, c->salt, sizeof(c->salt));
memcpy(req.record_seq, c->rec_seq, sizeof(c->rec_seq));
break;
}
default:
return -EOPNOTSUPP;
}
rc = fun_submit_admin_sync_cmd(fp->fdev, &req.common, &rsp,
sizeof(rsp), 0);
memzero_explicit(&req, sizeof(req));
if (rc)
return rc;
tx_ctx = tls_driver_ctx(sk, direction);
tx_ctx->tlsid = rsp.tlsid;
tx_ctx->next_seq = start_offload_tcp_sn;
atomic64_inc(&fp->tx_tls_add);
return 0;
}
static void fun_ktls_del(struct net_device *netdev,
struct tls_context *tls_ctx,
enum tls_offload_ctx_dir direction)
{
struct funeth_priv *fp = netdev_priv(netdev);
struct fun_admin_ktls_modify_req req;
struct fun_ktls_tx_ctx *tx_ctx;
if (direction != TLS_OFFLOAD_CTX_DIR_TX)
return;
tx_ctx = __tls_driver_ctx(tls_ctx, direction);
req.common = FUN_ADMIN_REQ_COMMON_INIT2(FUN_ADMIN_OP_KTLS,
offsetof(struct fun_admin_ktls_modify_req, tcp_seq));
req.subop = FUN_ADMIN_SUBOP_MODIFY;
req.flags = cpu_to_be16(FUN_KTLS_MODIFY_REMOVE);
req.id = cpu_to_be32(fp->ktls_id);
req.tlsid = tx_ctx->tlsid;
fun_submit_admin_sync_cmd(fp->fdev, &req.common, NULL, 0, 0);
atomic64_inc(&fp->tx_tls_del);
}
static int fun_ktls_resync(struct net_device *netdev, struct sock *sk, u32 seq,
u8 *rcd_sn, enum tls_offload_ctx_dir direction)
{
struct funeth_priv *fp = netdev_priv(netdev);
struct fun_admin_ktls_modify_req req;
struct fun_ktls_tx_ctx *tx_ctx;
int rc;
if (direction != TLS_OFFLOAD_CTX_DIR_TX)
return -EOPNOTSUPP;
tx_ctx = tls_driver_ctx(sk, direction);
req.common = FUN_ADMIN_REQ_COMMON_INIT2(FUN_ADMIN_OP_KTLS,
offsetof(struct fun_admin_ktls_modify_req, key));
req.subop = FUN_ADMIN_SUBOP_MODIFY;
req.flags = 0;
req.id = cpu_to_be32(fp->ktls_id);
req.tlsid = tx_ctx->tlsid;
req.tcp_seq = cpu_to_be32(seq);
req.version = 0;
req.cipher = 0;
memcpy(req.record_seq, rcd_sn, sizeof(req.record_seq));
atomic64_inc(&fp->tx_tls_resync);
rc = fun_submit_admin_sync_cmd(fp->fdev, &req.common, NULL, 0, 0);
if (!rc)
tx_ctx->next_seq = seq;
return rc;
}
static const struct tlsdev_ops fun_ktls_ops = {
.tls_dev_add = fun_ktls_add,
.tls_dev_del = fun_ktls_del,
.tls_dev_resync = fun_ktls_resync,
};
int fun_ktls_init(struct net_device *netdev)
{
struct funeth_priv *fp = netdev_priv(netdev);
int rc;
rc = fun_admin_ktls_create(fp, netdev->dev_port);
if (rc)
return rc;
fp->ktls_id = netdev->dev_port;
netdev->tlsdev_ops = &fun_ktls_ops;
netdev->hw_features |= NETIF_F_HW_TLS_TX;
netdev->features |= NETIF_F_HW_TLS_TX;
return 0;
}
void fun_ktls_cleanup(struct funeth_priv *fp)
{
if (fp->ktls_id == FUN_HCI_ID_INVALID)
return;
fun_res_destroy(fp->fdev, FUN_ADMIN_OP_KTLS, 0, fp->ktls_id);
fp->ktls_id = FUN_HCI_ID_INVALID;
}
|
