src/libstrongswan/plugins/aesni/aesni_plugin.c

   1 /*
   2  * Copyright (C) 2015 Martin Willi
   3  * Copyright (C) 2015 revosec AG
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  */
  15
  16 #include "aesni_plugin.h"
  17 #include "aesni_cbc.h"
  18
  19 #include <stdio.h>
  20
  21 #include <library.h>
  22 #include <utils/debug.h>
  23 #include <utils/cpu_feature.h>
  24
  25 typedef struct private_aesni_plugin_t private_aesni_plugin_t;
  26 typedef enum cpuid_feature_t cpuid_feature_t;
  27
  28 /**
  29  * private data of aesni_plugin
  30  */
  31 struct private_aesni_plugin_t {
  32
  33         /**
  34          * public functions
  35          */
  36         aesni_plugin_t public;
  37 };
  38
  39 METHOD(plugin_t, get_name, char*,
  40         private_aesni_plugin_t *this)
  41 {
  42         return "aesni";
  43 }
  44
  45 METHOD(plugin_t, get_features, int,
  46         private_aesni_plugin_t *this, plugin_feature_t *features[])
  47 {
  48         static plugin_feature_t f[] = {
  49                 PLUGIN_REGISTER(CRYPTER, aesni_cbc_create),
  50                         PLUGIN_PROVIDE(CRYPTER, ENCR_AES_CBC, 16),
  51                         PLUGIN_PROVIDE(CRYPTER, ENCR_AES_CBC, 24),
  52                         PLUGIN_PROVIDE(CRYPTER, ENCR_AES_CBC, 32),
  53         };
  54
  55         *features = f;
  56         if (cpu_feature_available(CPU_FEATURE_AESNI))
  57         {
  58                 return countof(f);
  59         }
  60         return 0;
  61 }
  62
  63 METHOD(plugin_t, destroy, void,
  64         private_aesni_plugin_t *this)
  65 {
  66         free(this);
  67 }
  68
  69 /*
  70  * see header file
  71  */
  72 plugin_t *aesni_plugin_create()
  73 {
  74         private_aesni_plugin_t *this;
  75
  76         INIT(this,
  77                 .public = {
  78                         .plugin = {
  79                                 .get_name = _get_name,
  80                                 .get_features = _get_features,
  81                                 .reload = (void*)return_false,
  82                                 .destroy = _destroy,
  83                         },
  84                 },
  85         );
  86
  87         return &this->public.plugin;
  88 }