1 /*
2  * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  *
32  */
33 
34 #include <linux/ethtool.h>
35 #include <net/sock.h>
36 
37 #include "en.h"
38 #include "fpga/sdk.h"
39 #include "en_accel/ktls.h"
40 
41 static const struct counter_desc mlx5e_ktls_sw_stats_desc[] = {
42 	{ MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_ctx) },
43 	{ MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_del) },
44 	{ MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, rx_tls_ctx) },
45 	{ MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, rx_tls_del) },
46 };
47 
48 #define MLX5E_READ_CTR_ATOMIC64(ptr, dsc, i) \
49 	atomic64_read((atomic64_t *)((char *)(ptr) + (dsc)[i].offset))
50 
51 int mlx5e_ktls_get_count(struct mlx5e_priv *priv)
52 {
53 	if (!priv->tls)
54 		return 0;
55 
56 	return ARRAY_SIZE(mlx5e_ktls_sw_stats_desc);
57 }
58 
59 int mlx5e_ktls_get_strings(struct mlx5e_priv *priv, uint8_t *data)
60 {
61 	unsigned int i, n, idx = 0;
62 
63 	if (!priv->tls)
64 		return 0;
65 
66 	n = mlx5e_ktls_get_count(priv);
67 
68 	for (i = 0; i < n; i++)
69 		strcpy(data + (idx++) * ETH_GSTRING_LEN,
70 		       mlx5e_ktls_sw_stats_desc[i].format);
71 
72 	return n;
73 }
74 
75 int mlx5e_ktls_get_stats(struct mlx5e_priv *priv, u64 *data)
76 {
77 	unsigned int i, n, idx = 0;
78 
79 	if (!priv->tls)
80 		return 0;
81 
82 	n = mlx5e_ktls_get_count(priv);
83 
84 	for (i = 0; i < n; i++)
85 		data[idx++] = MLX5E_READ_CTR_ATOMIC64(&priv->tls->sw_stats,
86 						      mlx5e_ktls_sw_stats_desc,
87 						      i);
88 
89 	return n;
90 }
91