package/kernel/mac80211/patches/subsys/100-remove-cryptoapi-dependencies.patch

   1 --- a/net/mac80211/Makefile
   2 +++ b/net/mac80211/Makefile
   3 @@ -7,7 +7,6 @@ mac80211-y := \
   4         driver-ops.o \
   5         sta_info.o \
   6         wep.o \
   7 -       aead_api.o \
   8         wpa.o \
   9         scan.o offchannel.o \
  10         ht.o agg-tx.o agg-rx.o \
  11 @@ -18,8 +17,8 @@ mac80211-y := \
  12         rate.o \
  13         michael.o \
  14         tkip.o \
  15 +       aes_ccm.o \
  16         aes_cmac.o \
  17 -       aes_gmac.o \
  18         fils_aead.o \
  19         cfg.o \
  20         ethtool.o \
  21 --- a/net/mac80211/aead_api.c
  22 +++ /dev/null
  23 @@ -1,115 +0,0 @@
  24 -/*
  25 - * Copyright 2003-2004, Instant802 Networks, Inc.
  26 - * Copyright 2005-2006, Devicescape Software, Inc.
  27 - * Copyright 2014-2015, Qualcomm Atheros, Inc.
  28 - *
  29 - * Rewrite: Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
  30 - *
  31 - * This program is free software; you can redistribute it and/or modify
  32 - * it under the terms of the GNU General Public License version 2 as
  33 - * published by the Free Software Foundation.
  34 - */
  35 -
  36 -#include <linux/kernel.h>
  37 -#include <linux/types.h>
  38 -#include <linux/err.h>
  39 -#include <linux/scatterlist.h>
  40 -#include <crypto/aead.h>
  41 -
  42 -#include "aead_api.h"
  43 -
  44 -int aead_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, size_t aad_len,
  45 -                u8 *data, size_t data_len, u8 *mic)
  46 -{
  47 -       size_t mic_len = crypto_aead_authsize(tfm);
  48 -       struct scatterlist sg[3];
  49 -       struct aead_request *aead_req;
  50 -       int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
  51 -       u8 *__aad;
  52 -
  53 -       aead_req = kzalloc(reqsize + aad_len, GFP_ATOMIC);
  54 -       if (!aead_req)
  55 -               return -ENOMEM;
  56 -
  57 -       __aad = (u8 *)aead_req + reqsize;
  58 -       memcpy(__aad, aad, aad_len);
  59 -
  60 -       sg_init_table(sg, 3);
  61 -       sg_set_buf(&sg[0], __aad, aad_len);
  62 -       sg_set_buf(&sg[1], data, data_len);
  63 -       sg_set_buf(&sg[2], mic, mic_len);
  64 -
  65 -       aead_request_set_tfm(aead_req, tfm);
  66 -       aead_request_set_crypt(aead_req, sg, sg, data_len, b_0);
  67 -       aead_request_set_ad(aead_req, sg[0].length);
  68 -
  69 -       crypto_aead_encrypt(aead_req);
  70 -       kzfree(aead_req);
  71 -
  72 -       return 0;
  73 -}
  74 -
  75 -int aead_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, size_t aad_len,
  76 -                u8 *data, size_t data_len, u8 *mic)
  77 -{
  78 -       size_t mic_len = crypto_aead_authsize(tfm);
  79 -       struct scatterlist sg[3];
  80 -       struct aead_request *aead_req;
  81 -       int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
  82 -       u8 *__aad;
  83 -       int err;
  84 -
  85 -       if (data_len == 0)
  86 -               return -EINVAL;
  87 -
  88 -       aead_req = kzalloc(reqsize + aad_len, GFP_ATOMIC);
  89 -       if (!aead_req)
  90 -               return -ENOMEM;
  91 -
  92 -       __aad = (u8 *)aead_req + reqsize;
  93 -       memcpy(__aad, aad, aad_len);
  94 -
  95 -       sg_init_table(sg, 3);
  96 -       sg_set_buf(&sg[0], __aad, aad_len);
  97 -       sg_set_buf(&sg[1], data, data_len);
  98 -       sg_set_buf(&sg[2], mic, mic_len);
  99 -
 100 -       aead_request_set_tfm(aead_req, tfm);
 101 -       aead_request_set_crypt(aead_req, sg, sg, data_len + mic_len, b_0);
 102 -       aead_request_set_ad(aead_req, sg[0].length);
 103 -
 104 -       err = crypto_aead_decrypt(aead_req);
 105 -       kzfree(aead_req);
 106 -
 107 -       return err;
 108 -}
 109 -
 110 -struct crypto_aead *
 111 -aead_key_setup_encrypt(const char *alg, const u8 key[],
 112 -                      size_t key_len, size_t mic_len)
 113 -{
 114 -       struct crypto_aead *tfm;
 115 -       int err;
 116 -
 117 -       tfm = crypto_alloc_aead(alg, 0, CRYPTO_ALG_ASYNC);
 118 -       if (IS_ERR(tfm))
 119 -               return tfm;
 120 -
 121 -       err = crypto_aead_setkey(tfm, key, key_len);
 122 -       if (err)
 123 -               goto free_aead;
 124 -       err = crypto_aead_setauthsize(tfm, mic_len);
 125 -       if (err)
 126 -               goto free_aead;
 127 -
 128 -       return tfm;
 129 -
 130 -free_aead:
 131 -       crypto_free_aead(tfm);
 132 -       return ERR_PTR(err);
 133 -}
 134 -
 135 -void aead_key_free(struct crypto_aead *tfm)
 136 -{
 137 -       crypto_free_aead(tfm);
 138 -}
 139 --- a/net/mac80211/aead_api.h
 140 +++ /dev/null
 141 @@ -1,27 +0,0 @@
 142 -/*
 143 - * This program is free software; you can redistribute it and/or modify
 144 - * it under the terms of the GNU General Public License version 2 as
 145 - * published by the Free Software Foundation.
 146 - */
 147 -
 148 -#ifndef _AEAD_API_H
 149 -#define _AEAD_API_H
 150 -
 151 -#include <crypto/aead.h>
 152 -#include <linux/crypto.h>
 153 -
 154 -struct crypto_aead *
 155 -aead_key_setup_encrypt(const char *alg, const u8 key[],
 156 -                      size_t key_len, size_t mic_len);
 157 -
 158 -int aead_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
 159 -                size_t aad_len, u8 *data,
 160 -                size_t data_len, u8 *mic);
 161 -
 162 -int aead_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
 163 -                size_t aad_len, u8 *data,
 164 -                size_t data_len, u8 *mic);
 165 -
 166 -void aead_key_free(struct crypto_aead *tfm);
 167 -
 168 -#endif /* _AEAD_API_H */
 169 --- a/net/mac80211/aes_ccm.h
 170 +++ b/net/mac80211/aes_ccm.h
 171 @@ -10,39 +10,17 @@
 172  #ifndef AES_CCM_H
 173  #define AES_CCM_H
 174
 175 -#include "aead_api.h"
 176 +#include <linux/crypto.h>
 177
 178 -#define CCM_AAD_LEN    32
 179 -
 180 -static inline struct crypto_aead *
 181 -ieee80211_aes_key_setup_encrypt(const u8 key[], size_t key_len, size_t mic_len)
 182 -{
 183 -       return aead_key_setup_encrypt("ccm(aes)", key, key_len, mic_len);
 184 -}
 185 -
 186 -static inline int
 187 -ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm,
 188 -                         u8 *b_0, u8 *aad, u8 *data,
 189 -                         size_t data_len, u8 *mic)
 190 -{
 191 -       return aead_encrypt(tfm, b_0, aad + 2,
 192 -                           be16_to_cpup((__be16 *)aad),
 193 -                           data, data_len, mic);
 194 -}
 195 -
 196 -static inline int
 197 -ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm,
 198 -                         u8 *b_0, u8 *aad, u8 *data,
 199 -                         size_t data_len, u8 *mic)
 200 -{
 201 -       return aead_decrypt(tfm, b_0, aad + 2,
 202 -                           be16_to_cpup((__be16 *)aad),
 203 -                           data, data_len, mic);
 204 -}
 205 -
 206 -static inline void ieee80211_aes_key_free(struct crypto_aead *tfm)
 207 -{
 208 -       return aead_key_free(tfm);
 209 -}
 210 +struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[],
 211 +                                                     size_t key_len,
 212 +                                                     size_t mic_len);
 213 +void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
 214 +                              u8 *data, size_t data_len, u8 *mic,
 215 +                              size_t mic_len);
 216 +int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
 217 +                             u8 *data, size_t data_len, u8 *mic,
 218 +                             size_t mic_len);
 219 +void ieee80211_aes_key_free(struct crypto_cipher *tfm);
 220
 221  #endif /* AES_CCM_H */
 222 --- /dev/null
 223 +++ b/net/mac80211/aes_gcm.c
 224 @@ -0,0 +1,109 @@
 225 +/*
 226 + * Copyright 2014-2015, Qualcomm Atheros, Inc.
 227 + *
 228 + * This program is free software; you can redistribute it and/or modify
 229 + * it under the terms of the GNU General Public License version 2 as
 230 + * published by the Free Software Foundation.
 231 + */
 232 +
 233 +#include <linux/kernel.h>
 234 +#include <linux/types.h>
 235 +#include <linux/err.h>
 236 +#include <crypto/aead.h>
 237 +
 238 +#include <net/mac80211.h>
 239 +#include "key.h"
 240 +#include "aes_gcm.h"
 241 +
 242 +int ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad,
 243 +                             u8 *data, size_t data_len, u8 *mic)
 244 +{
 245 +       struct scatterlist sg[3];
 246 +       struct aead_request *aead_req;
 247 +       int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
 248 +       u8 *__aad;
 249 +
 250 +       aead_req = kzalloc(reqsize + GCM_AAD_LEN, GFP_ATOMIC);
 251 +       if (!aead_req)
 252 +               return -ENOMEM;
 253 +
 254 +       __aad = (u8 *)aead_req + reqsize;
 255 +       memcpy(__aad, aad, GCM_AAD_LEN);
 256 +
 257 +       sg_init_table(sg, 3);
 258 +       sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad));
 259 +       sg_set_buf(&sg[1], data, data_len);
 260 +       sg_set_buf(&sg[2], mic, IEEE80211_GCMP_MIC_LEN);
 261 +
 262 +       aead_request_set_tfm(aead_req, tfm);
 263 +       aead_request_set_crypt(aead_req, sg, sg, data_len, j_0);
 264 +       aead_request_set_ad(aead_req, sg[0].length);
 265 +
 266 +       crypto_aead_encrypt(aead_req);
 267 +       kzfree(aead_req);
 268 +       return 0;
 269 +}
 270 +
 271 +int ieee80211_aes_gcm_decrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad,
 272 +                             u8 *data, size_t data_len, u8 *mic)
 273 +{
 274 +       struct scatterlist sg[3];
 275 +       struct aead_request *aead_req;
 276 +       int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
 277 +       u8 *__aad;
 278 +       int err;
 279 +
 280 +       if (data_len == 0)
 281 +               return -EINVAL;
 282 +
 283 +       aead_req = kzalloc(reqsize + GCM_AAD_LEN, GFP_ATOMIC);
 284 +       if (!aead_req)
 285 +               return -ENOMEM;
 286 +
 287 +       __aad = (u8 *)aead_req + reqsize;
 288 +       memcpy(__aad, aad, GCM_AAD_LEN);
 289 +
 290 +       sg_init_table(sg, 3);
 291 +       sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad));
 292 +       sg_set_buf(&sg[1], data, data_len);
 293 +       sg_set_buf(&sg[2], mic, IEEE80211_GCMP_MIC_LEN);
 294 +
 295 +       aead_request_set_tfm(aead_req, tfm);
 296 +       aead_request_set_crypt(aead_req, sg, sg,
 297 +                              data_len + IEEE80211_GCMP_MIC_LEN, j_0);
 298 +       aead_request_set_ad(aead_req, sg[0].length);
 299 +
 300 +       err = crypto_aead_decrypt(aead_req);
 301 +       kzfree(aead_req);
 302 +
 303 +       return err;
 304 +}
 305 +
 306 +struct crypto_aead *ieee80211_aes_gcm_key_setup_encrypt(const u8 key[],
 307 +                                                       size_t key_len)
 308 +{
 309 +       struct crypto_aead *tfm;
 310 +       int err;
 311 +
 312 +       tfm = crypto_alloc_aead("gcm(aes)", 0, CRYPTO_ALG_ASYNC);
 313 +       if (IS_ERR(tfm))
 314 +               return tfm;
 315 +
 316 +       err = crypto_aead_setkey(tfm, key, key_len);
 317 +       if (err)
 318 +               goto free_aead;
 319 +       err = crypto_aead_setauthsize(tfm, IEEE80211_GCMP_MIC_LEN);
 320 +       if (err)
 321 +               goto free_aead;
 322 +
 323 +       return tfm;
 324 +
 325 +free_aead:
 326 +       crypto_free_aead(tfm);
 327 +       return ERR_PTR(err);
 328 +}
 329 +
 330 +void ieee80211_aes_gcm_key_free(struct crypto_aead *tfm)
 331 +{
 332 +       crypto_free_aead(tfm);
 333 +}
 334 --- a/net/mac80211/aes_gcm.h
 335 +++ b/net/mac80211/aes_gcm.h
 336 @@ -9,38 +9,30 @@
 337  #ifndef AES_GCM_H
 338  #define AES_GCM_H
 339
 340 -#include "aead_api.h"
 341 +#include <linux/crypto.h>
 342
 343 -#define GCM_AAD_LEN    32
 344 -
 345 -static inline int ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm,
 346 -                                           u8 *j_0, u8 *aad,  u8 *data,
 347 -                                           size_t data_len, u8 *mic)
 348 +static inline void
 349 +ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad,
 350 +                         u8 *data, size_t data_len, u8 *mic)
 351  {
 352 -       return aead_encrypt(tfm, j_0, aad + 2,
 353 -                           be16_to_cpup((__be16 *)aad),
 354 -                           data, data_len, mic);
 355  }
 356
 357 -static inline int ieee80211_aes_gcm_decrypt(struct crypto_aead *tfm,
 358 -                                           u8 *j_0, u8 *aad, u8 *data,
 359 -                                           size_t data_len, u8 *mic)
 360 +static inline int
 361 +ieee80211_aes_gcm_decrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad,
 362 +                         u8 *data, size_t data_len, u8 *mic)
 363  {
 364 -       return aead_decrypt(tfm, j_0, aad + 2,
 365 -                           be16_to_cpup((__be16 *)aad),
 366 -                           data, data_len, mic);
 367 +    return -EOPNOTSUPP;
 368  }
 369
 370  static inline struct crypto_aead *
 371  ieee80211_aes_gcm_key_setup_encrypt(const u8 key[], size_t key_len)
 372  {
 373 -       return aead_key_setup_encrypt("gcm(aes)", key,
 374 -                                     key_len, IEEE80211_GCMP_MIC_LEN);
 375 +    return NULL;
 376  }
 377
 378 -static inline void ieee80211_aes_gcm_key_free(struct crypto_aead *tfm)
 379 +static inline void
 380 +ieee80211_aes_gcm_key_free(struct crypto_aead *tfm)
 381  {
 382 -       return aead_key_free(tfm);
 383  }
 384
 385  #endif /* AES_GCM_H */
 386 --- a/net/mac80211/wpa.c
 387 +++ b/net/mac80211/wpa.c
 388 @@ -314,7 +314,8 @@ ieee80211_crypto_tkip_decrypt(struct iee
 389  }
 390
 391
 392 -static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *b_0, u8 *aad)
 393 +static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *b_0, u8 *aad,
 394 +                               u16 data_len)
 395  {
 396         __le16 mask_fc;
 397         int a4_included, mgmt;
 398 @@ -344,14 +345,8 @@ static void ccmp_special_blocks(struct s
 399         else
 400                 qos_tid = 0;
 401
 402 -       /* In CCM, the initial vectors (IV) used for CTR mode encryption and CBC
 403 -        * mode authentication are not allowed to collide, yet both are derived
 404 -        * from this vector b_0. We only set L := 1 here to indicate that the
 405 -        * data size can be represented in (L+1) bytes. The CCM layer will take
 406 -        * care of storing the data length in the top (L+1) bytes and setting
 407 -        * and clearing the other bits as is required to derive the two IVs.
 408 -        */
 409 -       b_0[0] = 0x1;
 410 +       /* First block, b_0 */
 411 +       b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
 412
 413         /* Nonce: Nonce Flags | A2 | PN
 414          * Nonce Flags: Priority (b0..b3) | Management (b4) | Reserved (b5..b7)
 415 @@ -359,6 +354,8 @@ static void ccmp_special_blocks(struct s
 416         b_0[1] = qos_tid | (mgmt << 4);
 417         memcpy(&b_0[2], hdr->addr2, ETH_ALEN);
 418         memcpy(&b_0[8], pn, IEEE80211_CCMP_PN_LEN);
 419 +       /* l(m) */
 420 +       put_unaligned_be16(data_len, &b_0[14]);
 421
 422         /* AAD (extra authenticate-only data) / masked 802.11 header
 423          * FC | A1 | A2 | A3 | SC | [A4] | [QC] */
 424 @@ -415,7 +412,7 @@ static int ccmp_encrypt_skb(struct ieee8
 425         u8 *pos;
 426         u8 pn[6];
 427         u64 pn64;
 428 -       u8 aad[CCM_AAD_LEN];
 429 +       u8 aad[2 * AES_BLOCK_SIZE];
 430         u8 b_0[AES_BLOCK_SIZE];
 431
 432         if (info->control.hw_key &&
 433 @@ -470,9 +467,11 @@ static int ccmp_encrypt_skb(struct ieee8
 434                 return 0;
 435
 436         pos += IEEE80211_CCMP_HDR_LEN;
 437 -       ccmp_special_blocks(skb, pn, b_0, aad);
 438 -       return ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, b_0, aad, pos, len,
 439 -                                        skb_put(skb, mic_len));
 440 +       ccmp_special_blocks(skb, pn, b_0, aad, len);
 441 +       ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, b_0, aad, pos, len,
 442 +                                 skb_put(skb, mic_len), mic_len);
 443 +
 444 +       return 0;
 445  }
 446
 447
 448 @@ -545,13 +544,13 @@ ieee80211_crypto_ccmp_decrypt(struct iee
 449                         u8 aad[2 * AES_BLOCK_SIZE];
 450                         u8 b_0[AES_BLOCK_SIZE];
 451                         /* hardware didn't decrypt/verify MIC */
 452 -                       ccmp_special_blocks(skb, pn, b_0, aad);
 453 +                       ccmp_special_blocks(skb, pn, b_0, aad, data_len);
 454
 455                         if (ieee80211_aes_ccm_decrypt(
 456                                     key->u.ccmp.tfm, b_0, aad,
 457                                     skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN,
 458                                     data_len,
 459 -                                   skb->data + skb->len - mic_len))
 460 +                                   skb->data + skb->len - mic_len, mic_len))
 461                                 return RX_DROP_UNUSABLE;
 462                 }
 463
 464 @@ -646,7 +645,7 @@ static int gcmp_encrypt_skb(struct ieee8
 465         u8 *pos;
 466         u8 pn[6];
 467         u64 pn64;
 468 -       u8 aad[GCM_AAD_LEN];
 469 +       u8 aad[2 * AES_BLOCK_SIZE];
 470         u8 j_0[AES_BLOCK_SIZE];
 471
 472         if (info->control.hw_key &&
 473 @@ -703,8 +702,10 @@ static int gcmp_encrypt_skb(struct ieee8
 474
 475         pos += IEEE80211_GCMP_HDR_LEN;
 476         gcmp_special_blocks(skb, pn, j_0, aad);
 477 -       return ieee80211_aes_gcm_encrypt(key->u.gcmp.tfm, j_0, aad, pos, len,
 478 -                                        skb_put(skb, IEEE80211_GCMP_MIC_LEN));
 479 +       ieee80211_aes_gcm_encrypt(key->u.gcmp.tfm, j_0, aad, pos, len,
 480 +                                 skb_put(skb, IEEE80211_GCMP_MIC_LEN));
 481 +
 482 +       return 0;
 483  }
 484
 485  ieee80211_tx_result
 486 @@ -1127,9 +1128,9 @@ ieee80211_crypto_aes_gmac_encrypt(struct
 487         struct ieee80211_key *key = tx->key;
 488         struct ieee80211_mmie_16 *mmie;
 489         struct ieee80211_hdr *hdr;
 490 -       u8 aad[GMAC_AAD_LEN];
 491 +       u8 aad[20];
 492         u64 pn64;
 493 -       u8 nonce[GMAC_NONCE_LEN];
 494 +       u8 nonce[12];
 495
 496         if (WARN_ON(skb_queue_len(&tx->skbs) != 1))
 497                 return TX_DROP;
 498 @@ -1175,7 +1176,7 @@ ieee80211_crypto_aes_gmac_decrypt(struct
 499         struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
 500         struct ieee80211_key *key = rx->key;
 501         struct ieee80211_mmie_16 *mmie;
 502 -       u8 aad[GMAC_AAD_LEN], *mic, ipn[6], nonce[GMAC_NONCE_LEN];
 503 +       u8 aad[20], *mic, ipn[6], nonce[12];
 504         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 505
 506         if (!ieee80211_is_mgmt(hdr->frame_control))
 507 --- /dev/null
 508 +++ b/net/mac80211/aes_ccm.c
 509 @@ -0,0 +1,144 @@
 510 +/*
 511 + * Copyright 2003-2004, Instant802 Networks, Inc.
 512 + * Copyright 2005-2006, Devicescape Software, Inc.
 513 + *
 514 + * Rewrite: Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
 515 + *
 516 + * This program is free software; you can redistribute it and/or modify
 517 + * it under the terms of the GNU General Public License version 2 as
 518 + * published by the Free Software Foundation.
 519 + */
 520 +
 521 +#include <linux/kernel.h>
 522 +#include <linux/types.h>
 523 +#include <linux/err.h>
 524 +#include <crypto/aead.h>
 525 +#include <crypto/aes.h>
 526 +
 527 +#include <net/mac80211.h>
 528 +#include "key.h"
 529 +#include "aes_ccm.h"
 530 +
 531 +static void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *b_0, u8 *aad, u8 *s_0,
 532 +                           u8 *a, u8 *b)
 533 +{
 534 +       int i;
 535 +
 536 +       crypto_cipher_encrypt_one(tfm, b, b_0);
 537 +
 538 +       /* Extra Authenticate-only data (always two AES blocks) */
 539 +       for (i = 0; i < AES_BLOCK_SIZE; i++)
 540 +               aad[i] ^= b[i];
 541 +       crypto_cipher_encrypt_one(tfm, b, aad);
 542 +
 543 +       aad += AES_BLOCK_SIZE;
 544 +
 545 +       for (i = 0; i < AES_BLOCK_SIZE; i++)
 546 +               aad[i] ^= b[i];
 547 +       crypto_cipher_encrypt_one(tfm, a, aad);
 548 +
 549 +       /* Mask out bits from auth-only-b_0 */
 550 +       b_0[0] &= 0x07;
 551 +
 552 +       /* S_0 is used to encrypt T (= MIC) */
 553 +       b_0[14] = 0;
 554 +       b_0[15] = 0;
 555 +       crypto_cipher_encrypt_one(tfm, s_0, b_0);
 556 +}
 557 +
 558 +
 559 +void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
 560 +                              u8 *data, size_t data_len, u8 *mic,
 561 +                              size_t mic_len)
 562 +{
 563 +       int i, j, last_len, num_blocks;
 564 +       u8 b[AES_BLOCK_SIZE];
 565 +       u8 s_0[AES_BLOCK_SIZE];
 566 +       u8 e[AES_BLOCK_SIZE];
 567 +       u8 *pos, *cpos;
 568 +
 569 +       num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
 570 +       last_len = data_len % AES_BLOCK_SIZE;
 571 +       aes_ccm_prepare(tfm, b_0, aad, s_0, b, b);
 572 +
 573 +       /* Process payload blocks */
 574 +       pos = data;
 575 +       cpos = data;
 576 +       for (j = 1; j <= num_blocks; j++) {
 577 +               int blen = (j == num_blocks && last_len) ?
 578 +                       last_len : AES_BLOCK_SIZE;
 579 +
 580 +               /* Authentication followed by encryption */
 581 +               for (i = 0; i < blen; i++)
 582 +                       b[i] ^= pos[i];
 583 +               crypto_cipher_encrypt_one(tfm, b, b);
 584 +
 585 +               b_0[14] = (j >> 8) & 0xff;
 586 +               b_0[15] = j & 0xff;
 587 +               crypto_cipher_encrypt_one(tfm, e, b_0);
 588 +               for (i = 0; i < blen; i++)
 589 +                       *cpos++ = *pos++ ^ e[i];
 590 +       }
 591 +
 592 +       for (i = 0; i < mic_len; i++)
 593 +               mic[i] = b[i] ^ s_0[i];
 594 +}
 595 +
 596 +int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
 597 +                             u8 *data, size_t data_len, u8 *mic,
 598 +                             size_t mic_len)
 599 +{
 600 +       int i, j, last_len, num_blocks;
 601 +       u8 *pos, *cpos;
 602 +       u8 a[AES_BLOCK_SIZE];
 603 +       u8 b[AES_BLOCK_SIZE];
 604 +       u8 s_0[AES_BLOCK_SIZE];
 605 +
 606 +       num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
 607 +       last_len = data_len % AES_BLOCK_SIZE;
 608 +       aes_ccm_prepare(tfm, b_0, aad, s_0, a, b);
 609 +
 610 +       /* Process payload blocks */
 611 +       cpos = data;
 612 +       pos = data;
 613 +       for (j = 1; j <= num_blocks; j++) {
 614 +               int blen = (j == num_blocks && last_len) ?
 615 +                       last_len : AES_BLOCK_SIZE;
 616 +
 617 +               /* Decryption followed by authentication */
 618 +               b_0[14] = (j >> 8) & 0xff;
 619 +               b_0[15] = j & 0xff;
 620 +               crypto_cipher_encrypt_one(tfm, b, b_0);
 621 +               for (i = 0; i < blen; i++) {
 622 +                       *pos = *cpos++ ^ b[i];
 623 +                       a[i] ^= *pos++;
 624 +               }
 625 +               crypto_cipher_encrypt_one(tfm, a, a);
 626 +       }
 627 +
 628 +       for (i = 0; i < mic_len; i++) {
 629 +               if ((mic[i] ^ s_0[i]) != a[i])
 630 +                       return -1;
 631 +       }
 632 +
 633 +       return 0;
 634 +}
 635 +
 636 +struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[],
 637 +                                                     size_t key_len,
 638 +                                                     size_t mic_len)
 639 +{
 640 +       struct crypto_cipher *tfm;
 641 +
 642 +       tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
 643 +       if (!IS_ERR(tfm))
 644 +               crypto_cipher_setkey(tfm, key, key_len);
 645 +
 646 +       return tfm;
 647 +}
 648 +
 649 +
 650 +void ieee80211_aes_key_free(struct crypto_cipher *tfm)
 651 +{
 652 +       crypto_free_cipher(tfm);
 653 +}
 654 --- a/net/mac80211/Kconfig
 655 +++ b/net/mac80211/Kconfig
 656 @@ -5,8 +5,6 @@ config MAC80211
 657         depends on CRYPTO
 658         depends on CRYPTO_ARC4
 659         depends on CRYPTO_AES
 660 -       depends on CRYPTO_CCM
 661 -       depends on CRYPTO_GCM
 662         depends on CRYPTO_CMAC
 663         depends on CRC32
 664         ---help---
 665 --- a/net/mac80211/aes_gmac.h
 666 +++ b/net/mac80211/aes_gmac.h
 667 @@ -15,10 +15,22 @@
 668  #define GMAC_MIC_LEN   16
 669  #define GMAC_NONCE_LEN 12
 670
 671 -struct crypto_aead *ieee80211_aes_gmac_key_setup(const u8 key[],
 672 -                                                size_t key_len);
 673 -int ieee80211_aes_gmac(struct crypto_aead *tfm, const u8 *aad, u8 *nonce,
 674 -                      const u8 *data, size_t data_len, u8 *mic);
 675 -void ieee80211_aes_gmac_key_free(struct crypto_aead *tfm);
 676 +static inline struct crypto_aead *
 677 +ieee80211_aes_gmac_key_setup(const u8 key[], size_t key_len)
 678 +{
 679 +       return NULL;
 680 +}
 681 +
 682 +static inline int
 683 +ieee80211_aes_gmac(struct crypto_aead *tfm, const u8 *aad, u8 *nonce,
 684 +                  const u8 *data, size_t data_len, u8 *mic)
 685 +{
 686 +       return -EOPNOTSUPP;
 687 +}
 688 +
 689 +static inline void
 690 +ieee80211_aes_gmac_key_free(struct crypto_aead *tfm)
 691 +{
 692 +}
 693
 694  #endif /* AES_GMAC_H */
 695 --- a/net/mac80211/key.h
 696 +++ b/net/mac80211/key.h
 697 @@ -88,7 +88,7 @@ struct ieee80211_key {
 698                          * Management frames.
 699                          */
 700                         u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_CCMP_PN_LEN];
 701 -                       struct crypto_aead *tfm;
 702 +                       struct crypto_cipher *tfm;
 703                         u32 replays; /* dot11RSNAStatsCCMPReplays */
 704                 } ccmp;
 705                 struct {