xref: /linux/include/net/tls_toe.h (revision c95baf12f5077419db01313ab61c2aac007d40cd)
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