drivers/crypto/caam/pdb.h

   1 /*
   2  * CAAM Protocol Data Block (PDB) definition header file
   3  *
   4  * Copyright 2008-2016 Freescale Semiconductor, Inc.
   5  *
   6  */
   7
   8 #ifndef CAAM_PDB_H
   9 #define CAAM_PDB_H
  10 #include "compat.h"
  11
  12 /*
  13  * PDB- IPSec ESP Header Modification Options
  14  */
  15 #define PDBHMO_ESP_DECAP_SHIFT  28
  16 #define PDBHMO_ESP_ENCAP_SHIFT  28
  17 /*
  18  * Encap and Decap - Decrement TTL (Hop Limit) - Based on the value of the
  19  * Options Byte IP version (IPvsn) field:
  20  * if IPv4, decrement the inner IP header TTL field (byte 8);
  21  * if IPv6 decrement the inner IP header Hop Limit field (byte 7).
  22 */
  23 #define PDBHMO_ESP_DECAP_DEC_TTL        (0x02 << PDBHMO_ESP_DECAP_SHIFT)
  24 #define PDBHMO_ESP_ENCAP_DEC_TTL        (0x02 << PDBHMO_ESP_ENCAP_SHIFT)
  25 /*
  26  * Decap - DiffServ Copy - Copy the IPv4 TOS or IPv6 Traffic Class byte
  27  * from the outer IP header to the inner IP header.
  28  */
  29 #define PDBHMO_ESP_DIFFSERV             (0x01 << PDBHMO_ESP_DECAP_SHIFT)
  30 /*
  31  * Encap- Copy DF bit -if an IPv4 tunnel mode outer IP header is coming from
  32  * the PDB, copy the DF bit from the inner IP header to the outer IP header.
  33  */
  34 #define PDBHMO_ESP_DFBIT                (0x04 << PDBHMO_ESP_ENCAP_SHIFT)
  35
  36 #define PDBNH_ESP_ENCAP_SHIFT           16
  37 #define PDBNH_ESP_ENCAP_MASK            (0xff << PDBNH_ESP_ENCAP_SHIFT)
  38
  39 #define PDBHDRLEN_ESP_DECAP_SHIFT       16
  40 #define PDBHDRLEN_MASK                  (0x0fff << PDBHDRLEN_ESP_DECAP_SHIFT)
  41
  42 #define PDB_NH_OFFSET_SHIFT             8
  43 #define PDB_NH_OFFSET_MASK              (0xff << PDB_NH_OFFSET_SHIFT)
  44
  45 /*
  46  * PDB - IPSec ESP Encap/Decap Options
  47  */
  48 #define PDBOPTS_ESP_ARSNONE     0x00 /* no antireplay window */
  49 #define PDBOPTS_ESP_ARS32       0x40 /* 32-entry antireplay window */
  50 #define PDBOPTS_ESP_ARS128      0x80 /* 128-entry antireplay window */
  51 #define PDBOPTS_ESP_ARS64       0xc0 /* 64-entry antireplay window */
  52 #define PDBOPTS_ESP_ARS_MASK    0xc0 /* antireplay window mask */
  53 #define PDBOPTS_ESP_IVSRC       0x20 /* IV comes from internal random gen */
  54 #define PDBOPTS_ESP_ESN         0x10 /* extended sequence included */
  55 #define PDBOPTS_ESP_OUTFMT      0x08 /* output only decapsulation (decap) */
  56 #define PDBOPTS_ESP_IPHDRSRC    0x08 /* IP header comes from PDB (encap) */
  57 #define PDBOPTS_ESP_INCIPHDR    0x04 /* Prepend IP header to output frame */
  58 #define PDBOPTS_ESP_IPVSN       0x02 /* process IPv6 header */
  59 #define PDBOPTS_ESP_AOFL        0x04 /* adjust out frame len (decap, SEC>=5.3)*/
  60 #define PDBOPTS_ESP_TUNNEL      0x01 /* tunnel mode next-header byte */
  61 #define PDBOPTS_ESP_IPV6        0x02 /* ip header version is V6 */
  62 #define PDBOPTS_ESP_DIFFSERV    0x40 /* copy TOS/TC from inner iphdr */
  63 #define PDBOPTS_ESP_UPDATE_CSUM 0x80 /* encap-update ip header checksum */
  64 #define PDBOPTS_ESP_VERIFY_CSUM 0x20 /* decap-validate ip header checksum */
  65
  66 /*
  67  * General IPSec encap/decap PDB definitions
  68  */
  69
  70 /**
  71  * ipsec_encap_cbc - PDB part for IPsec CBC encapsulation
  72  * @iv: 16-byte array initialization vector
  73  */
  74 struct ipsec_encap_cbc {
  75         u8 iv[16];
  76 };
  77
  78 /**
  79  * ipsec_encap_ctr - PDB part for IPsec CTR encapsulation
  80  * @ctr_nonce: 4-byte array nonce
  81  * @ctr_initial: initial count constant
  82  * @iv: initialization vector
  83  */
  84 struct ipsec_encap_ctr {
  85         u8 ctr_nonce[4];
  86         u32 ctr_initial;
  87         u64 iv;
  88 };
  89
  90 /**
  91  * ipsec_encap_ccm - PDB part for IPsec CCM encapsulation
  92  * @salt: 3-byte array salt (lower 24 bits)
  93  * @ccm_opt: CCM algorithm options - MSB-LSB description:
  94  *  b0_flags (8b) - CCM B0; use 0x5B for 8-byte ICV, 0x6B for 12-byte ICV,
  95  *    0x7B for 16-byte ICV (cf. RFC4309, RFC3610)
  96  *  ctr_flags (8b) - counter flags; constant equal to 0x3
  97  *  ctr_initial (16b) - initial count constant
  98  * @iv: initialization vector
  99  */
 100 struct ipsec_encap_ccm {
 101         u8 salt[4];
 102         u32 ccm_opt;
 103         u64 iv;
 104 };
 105
 106 /**
 107  * ipsec_encap_gcm - PDB part for IPsec GCM encapsulation
 108  * @salt: 3-byte array salt (lower 24 bits)
 109  * @rsvd: reserved, do not use
 110  * @iv: initialization vector
 111  */
 112 struct ipsec_encap_gcm {
 113         u8 salt[4];
 114         u32 rsvd1;
 115         u64 iv;
 116 };
 117
 118 /**
 119  * ipsec_encap_pdb - PDB for IPsec encapsulation
 120  * @options: MSB-LSB description
 121  *  hmo (header manipulation options) - 4b
 122  *  reserved - 4b
 123  *  next header - 8b
 124  *  next header offset - 8b
 125  *  option flags (depend on selected algorithm) - 8b
 126  * @seq_num_ext_hi: (optional) IPsec Extended Sequence Number (ESN)
 127  * @seq_num: IPsec sequence number
 128  * @spi: IPsec SPI (Security Parameters Index)
 129  * @ip_hdr_len: optional IP Header length (in bytes)
 130  *  reserved - 16b
 131  *  Opt. IP Hdr Len - 16b
 132  * @ip_hdr: optional IP Header content
 133  */
 134 struct ipsec_encap_pdb {
 135         u32 options;
 136         u32 seq_num_ext_hi;
 137         u32 seq_num;
 138         union {
 139                 struct ipsec_encap_cbc cbc;
 140                 struct ipsec_encap_ctr ctr;
 141                 struct ipsec_encap_ccm ccm;
 142                 struct ipsec_encap_gcm gcm;
 143         };
 144         u32 spi;
 145         u32 ip_hdr_len;
 146         u32 ip_hdr[0];
 147 };
 148
 149 /**
 150  * ipsec_decap_cbc - PDB part for IPsec CBC decapsulation
 151  * @rsvd: reserved, do not use
 152  */
 153 struct ipsec_decap_cbc {
 154         u32 rsvd[2];
 155 };
 156
 157 /**
 158  * ipsec_decap_ctr - PDB part for IPsec CTR decapsulation
 159  * @ctr_nonce: 4-byte array nonce
 160  * @ctr_initial: initial count constant
 161  */
 162 struct ipsec_decap_ctr {
 163         u8 ctr_nonce[4];
 164         u32 ctr_initial;
 165 };
 166
 167 /**
 168  * ipsec_decap_ccm - PDB part for IPsec CCM decapsulation
 169  * @salt: 3-byte salt (lower 24 bits)
 170  * @ccm_opt: CCM algorithm options - MSB-LSB description:
 171  *  b0_flags (8b) - CCM B0; use 0x5B for 8-byte ICV, 0x6B for 12-byte ICV,
 172  *    0x7B for 16-byte ICV (cf. RFC4309, RFC3610)
 173  *  ctr_flags (8b) - counter flags; constant equal to 0x3
 174  *  ctr_initial (16b) - initial count constant
 175  */
 176 struct ipsec_decap_ccm {
 177         u8 salt[4];
 178         u32 ccm_opt;
 179 };
 180
 181 /**
 182  * ipsec_decap_gcm - PDB part for IPsec GCN decapsulation
 183  * @salt: 4-byte salt
 184  * @rsvd: reserved, do not use
 185  */
 186 struct ipsec_decap_gcm {
 187         u8 salt[4];
 188         u32 resvd;
 189 };
 190
 191 /**
 192  * ipsec_decap_pdb - PDB for IPsec decapsulation
 193  * @options: MSB-LSB description
 194  *  hmo (header manipulation options) - 4b
 195  *  IP header length - 12b
 196  *  next header offset - 8b
 197  *  option flags (depend on selected algorithm) - 8b
 198  * @seq_num_ext_hi: (optional) IPsec Extended Sequence Number (ESN)
 199  * @seq_num: IPsec sequence number
 200  * @anti_replay: Anti-replay window; size depends on ARS (option flags)
 201  */
 202 struct ipsec_decap_pdb {
 203         u32 options;
 204         union {
 205                 struct ipsec_decap_cbc cbc;
 206                 struct ipsec_decap_ctr ctr;
 207                 struct ipsec_decap_ccm ccm;
 208                 struct ipsec_decap_gcm gcm;
 209         };
 210         u32 seq_num_ext_hi;
 211         u32 seq_num;
 212         __be32 anti_replay[4];
 213 };
 214
 215 /*
 216  * IPSec ESP Datapath Protocol Override Register (DPOVRD)
 217  */
 218 struct ipsec_deco_dpovrd {
 219 #define IPSEC_ENCAP_DECO_DPOVRD_USE 0x80
 220         u8 ovrd_ecn;
 221         u8 ip_hdr_len;
 222         u8 nh_offset;
 223         u8 next_header; /* reserved if decap */
 224 };
 225
 226 /*
 227  * IEEE 802.11i WiFi Protocol Data Block
 228  */
 229 #define WIFI_PDBOPTS_FCS        0x01
 230 #define WIFI_PDBOPTS_AR         0x40
 231
 232 struct wifi_encap_pdb {
 233         u16 mac_hdr_len;
 234         u8 rsvd;
 235         u8 options;
 236         u8 iv_flags;
 237         u8 pri;
 238         u16 pn1;
 239         u32 pn2;
 240         u16 frm_ctrl_mask;
 241         u16 seq_ctrl_mask;
 242         u8 rsvd1[2];
 243         u8 cnst;
 244         u8 key_id;
 245         u8 ctr_flags;
 246         u8 rsvd2;
 247         u16 ctr_init;
 248 };
 249
 250 struct wifi_decap_pdb {
 251         u16 mac_hdr_len;
 252         u8 rsvd;
 253         u8 options;
 254         u8 iv_flags;
 255         u8 pri;
 256         u16 pn1;
 257         u32 pn2;
 258         u16 frm_ctrl_mask;
 259         u16 seq_ctrl_mask;
 260         u8 rsvd1[4];
 261         u8 ctr_flags;
 262         u8 rsvd2;
 263         u16 ctr_init;
 264 };
 265
 266 /*
 267  * IEEE 802.16 WiMAX Protocol Data Block
 268  */
 269 #define WIMAX_PDBOPTS_FCS       0x01
 270 #define WIMAX_PDBOPTS_AR        0x40 /* decap only */
 271
 272 struct wimax_encap_pdb {
 273         u8 rsvd[3];
 274         u8 options;
 275         u32 nonce;
 276         u8 b0_flags;
 277         u8 ctr_flags;
 278         u16 ctr_init;
 279         /* begin DECO writeback region */
 280         u32 pn;
 281         /* end DECO writeback region */
 282 };
 283
 284 struct wimax_decap_pdb {
 285         u8 rsvd[3];
 286         u8 options;
 287         u32 nonce;
 288         u8 iv_flags;
 289         u8 ctr_flags;
 290         u16 ctr_init;
 291         /* begin DECO writeback region */
 292         u32 pn;
 293         u8 rsvd1[2];
 294         u16 antireplay_len;
 295         u64 antireplay_scorecard;
 296         /* end DECO writeback region */
 297 };
 298
 299 /*
 300  * IEEE 801.AE MacSEC Protocol Data Block
 301  */
 302 #define MACSEC_PDBOPTS_FCS      0x01
 303 #define MACSEC_PDBOPTS_AR       0x40 /* used in decap only */
 304
 305 struct macsec_encap_pdb {
 306         u16 aad_len;
 307         u8 rsvd;
 308         u8 options;
 309         u64 sci;
 310         u16 ethertype;
 311         u8 tci_an;
 312         u8 rsvd1;
 313         /* begin DECO writeback region */
 314         u32 pn;
 315         /* end DECO writeback region */
 316 };
 317
 318 struct macsec_decap_pdb {
 319         u16 aad_len;
 320         u8 rsvd;
 321         u8 options;
 322         u64 sci;
 323         u8 rsvd1[3];
 324         /* begin DECO writeback region */
 325         u8 antireplay_len;
 326         u32 pn;
 327         u64 antireplay_scorecard;
 328         /* end DECO writeback region */
 329 };
 330
 331 /*
 332  * SSL/TLS/DTLS Protocol Data Blocks
 333  */
 334
 335 #define TLS_PDBOPTS_ARS32       0x40
 336 #define TLS_PDBOPTS_ARS64       0xc0
 337 #define TLS_PDBOPTS_OUTFMT      0x08
 338 #define TLS_PDBOPTS_IV_WRTBK    0x02 /* 1.1/1.2/DTLS only */
 339 #define TLS_PDBOPTS_EXP_RND_IV  0x01 /* 1.1/1.2/DTLS only */
 340
 341 struct tls_block_encap_pdb {
 342         u8 type;
 343         u8 version[2];
 344         u8 options;
 345         u64 seq_num;
 346         u32 iv[4];
 347 };
 348
 349 struct tls_stream_encap_pdb {
 350         u8 type;
 351         u8 version[2];
 352         u8 options;
 353         u64 seq_num;
 354         u8 i;
 355         u8 j;
 356         u8 rsvd1[2];
 357 };
 358
 359 struct dtls_block_encap_pdb {
 360         u8 type;
 361         u8 version[2];
 362         u8 options;
 363         u16 epoch;
 364         u16 seq_num[3];
 365         u32 iv[4];
 366 };
 367
 368 struct tls_block_decap_pdb {
 369         u8 rsvd[3];
 370         u8 options;
 371         u64 seq_num;
 372         u32 iv[4];
 373 };
 374
 375 struct tls_stream_decap_pdb {
 376         u8 rsvd[3];
 377         u8 options;
 378         u64 seq_num;
 379         u8 i;
 380         u8 j;
 381         u8 rsvd1[2];
 382 };
 383
 384 struct dtls_block_decap_pdb {
 385         u8 rsvd[3];
 386         u8 options;
 387         u16 epoch;
 388         u16 seq_num[3];
 389         u32 iv[4];
 390         u64 antireplay_scorecard;
 391 };
 392
 393 /*
 394  * SRTP Protocol Data Blocks
 395  */
 396 #define SRTP_PDBOPTS_MKI        0x08
 397 #define SRTP_PDBOPTS_AR         0x40
 398
 399 struct srtp_encap_pdb {
 400         u8 x_len;
 401         u8 mki_len;
 402         u8 n_tag;
 403         u8 options;
 404         u32 cnst0;
 405         u8 rsvd[2];
 406         u16 cnst1;
 407         u16 salt[7];
 408         u16 cnst2;
 409         u32 rsvd1;
 410         u32 roc;
 411         u32 opt_mki;
 412 };
 413
 414 struct srtp_decap_pdb {
 415         u8 x_len;
 416         u8 mki_len;
 417         u8 n_tag;
 418         u8 options;
 419         u32 cnst0;
 420         u8 rsvd[2];
 421         u16 cnst1;
 422         u16 salt[7];
 423         u16 cnst2;
 424         u16 rsvd1;
 425         u16 seq_num;
 426         u32 roc;
 427         u64 antireplay_scorecard;
 428 };
 429
 430 /*
 431  * DSA/ECDSA Protocol Data Blocks
 432  * Two of these exist: DSA-SIGN, and DSA-VERIFY. They are similar
 433  * except for the treatment of "w" for verify, "s" for sign,
 434  * and the placement of "a,b".
 435  */
 436 #define DSA_PDB_SGF_SHIFT       24
 437 #define DSA_PDB_SGF_MASK        (0xff << DSA_PDB_SGF_SHIFT)
 438 #define DSA_PDB_SGF_Q           (0x80 << DSA_PDB_SGF_SHIFT)
 439 #define DSA_PDB_SGF_R           (0x40 << DSA_PDB_SGF_SHIFT)
 440 #define DSA_PDB_SGF_G           (0x20 << DSA_PDB_SGF_SHIFT)
 441 #define DSA_PDB_SGF_W           (0x10 << DSA_PDB_SGF_SHIFT)
 442 #define DSA_PDB_SGF_S           (0x10 << DSA_PDB_SGF_SHIFT)
 443 #define DSA_PDB_SGF_F           (0x08 << DSA_PDB_SGF_SHIFT)
 444 #define DSA_PDB_SGF_C           (0x04 << DSA_PDB_SGF_SHIFT)
 445 #define DSA_PDB_SGF_D           (0x02 << DSA_PDB_SGF_SHIFT)
 446 #define DSA_PDB_SGF_AB_SIGN     (0x02 << DSA_PDB_SGF_SHIFT)
 447 #define DSA_PDB_SGF_AB_VERIFY   (0x01 << DSA_PDB_SGF_SHIFT)
 448
 449 #define DSA_PDB_L_SHIFT         7
 450 #define DSA_PDB_L_MASK          (0x3ff << DSA_PDB_L_SHIFT)
 451
 452 #define DSA_PDB_N_MASK          0x7f
 453
 454 struct dsa_sign_pdb {
 455         u32 sgf_ln; /* Use DSA_PDB_ defintions per above */
 456         u8 *q;
 457         u8 *r;
 458         u8 *g;  /* or Gx,y */
 459         u8 *s;
 460         u8 *f;
 461         u8 *c;
 462         u8 *d;
 463         u8 *ab; /* ECC only */
 464         u8 *u;
 465 };
 466
 467 struct dsa_verify_pdb {
 468         u32 sgf_ln;
 469         u8 *q;
 470         u8 *r;
 471         u8 *g;  /* or Gx,y */
 472         u8 *w; /* or Wx,y */
 473         u8 *f;
 474         u8 *c;
 475         u8 *d;
 476         u8 *tmp; /* temporary data block */
 477         u8 *ab; /* only used if ECC processing */
 478 };
 479
 480 /* RSA Protocol Data Block */
 481 #define RSA_PDB_SGF_SHIFT       28
 482 #define RSA_PDB_E_SHIFT         12
 483 #define RSA_PDB_E_MASK          (0xFFF << RSA_PDB_E_SHIFT)
 484 #define RSA_PDB_D_SHIFT         12
 485 #define RSA_PDB_D_MASK          (0xFFF << RSA_PDB_D_SHIFT)
 486
 487 #define RSA_PDB_SGF_F           (0x8 << RSA_PDB_SGF_SHIFT)
 488 #define RSA_PDB_SGF_G           (0x4 << RSA_PDB_SGF_SHIFT)
 489 #define RSA_PRIV_PDB_SGF_F      (0x4 << RSA_PDB_SGF_SHIFT)
 490 #define RSA_PRIV_PDB_SGF_G      (0x8 << RSA_PDB_SGF_SHIFT)
 491
 492 #define RSA_PRIV_KEY_FRM_1      0
 493
 494 /**
 495  * RSA Encrypt Protocol Data Block
 496  * @sgf: scatter-gather field
 497  * @f_dma: dma address of input data
 498  * @g_dma: dma address of encrypted output data
 499  * @n_dma: dma address of RSA modulus
 500  * @e_dma: dma address of RSA public exponent
 501  * @f_len: length in octets of the input data
 502  */
 503 struct rsa_pub_pdb {
 504         u32             sgf;
 505         dma_addr_t      f_dma;
 506         dma_addr_t      g_dma;
 507         dma_addr_t      n_dma;
 508         dma_addr_t      e_dma;
 509         u32             f_len;
 510 } __packed;
 511
 512 /**
 513  * RSA Decrypt PDB - Private Key Form #1
 514  * @sgf: scatter-gather field
 515  * @g_dma: dma address of encrypted input data
 516  * @f_dma: dma address of output data
 517  * @n_dma: dma address of RSA modulus
 518  * @d_dma: dma address of RSA private exponent
 519  */
 520 struct rsa_priv_f1_pdb {
 521         u32             sgf;
 522         dma_addr_t      g_dma;
 523         dma_addr_t      f_dma;
 524         dma_addr_t      n_dma;
 525         dma_addr_t      d_dma;
 526 } __packed;
 527
 528 #endif