1 /*
2 * Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved.
3 * Copyright (c) 2016-2017, Dave Watson <davejwatson@fb.com>. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #include <linux/kref.h>
35 #include <linux/list.h>
36
37 struct sock;
38
39 #define TLS_TOE_DEVICE_NAME_MAX 32
40
41 /*
42 * This structure defines the routines for Inline TLS driver.
43 * The following routines are optional and filled with a
44 * null pointer if not defined.
45 *
46 * @name: Its the name of registered Inline tls device
47 * @dev_list: Inline tls device list
48 * int (*feature)(struct tls_toe_device *device);
49 * Called to return Inline TLS driver capability
50 *
51 * int (*hash)(struct tls_toe_device *device, struct sock *sk);
52 * This function sets Inline driver for listen and program
53 * device specific functioanlity as required
54 *
55 * void (*unhash)(struct tls_toe_device *device, struct sock *sk);
56 * This function cleans listen state set by Inline TLS driver
57 *
58 * void (*release)(struct kref *kref);
59 * Release the registered device and allocated resources
60 * @kref: Number of reference to tls_toe_device
61 */
62 struct tls_toe_device {
63 char name[TLS_TOE_DEVICE_NAME_MAX];
64 struct list_head dev_list;
65 int (*feature)(struct tls_toe_device *device);
66 int (*hash)(struct tls_toe_device *device, struct sock *sk);
67 void (*unhash)(struct tls_toe_device *device, struct sock *sk);
68 void (*release)(struct kref *kref);
69 struct kref kref;
70 };
71
72 int tls_toe_bypass(struct sock *sk);
73 int tls_toe_hash(struct sock *sk);
74 void tls_toe_unhash(struct sock *sk);
75
76 void tls_toe_register_device(struct tls_toe_device *device);
77 void tls_toe_unregister_device(struct tls_toe_device *device);
78
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