LXR linux/include/net/tls

   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
  37struct 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 */
  62struct 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
  72int tls_toe_bypass(struct sock *sk);
  73int tls_toe_hash(struct sock *sk);
  74void tls_toe_unhash(struct sock *sk);
  75
  76void tls_toe_register_device(struct tls_toe_device *device);
  77void tls_toe_unregister_device(struct tls_toe_device *device);
  78