drivers/crypto/caam/pdb.h

   1 /*
   2  * CAAM Protocol Data Block (PDB) definition header file
   3  *
   4  * Copyright 2008-2012 Freescale Semiconductor, Inc.
   5  *
   6  */
   7
   8 #ifndef CAAM_PDB_H
   9 #define CAAM_PDB_H
  10
  11 /*
  12  * PDB- IPSec ESP Header Modification Options
  13  */
  14 #define PDBHMO_ESP_DECAP_SHIFT  12
  15 #define PDBHMO_ESP_ENCAP_SHIFT  4
  16 /*
  17  * Encap and Decap - Decrement TTL (Hop Limit) - Based on the value of the
  18  * Options Byte IP version (IPvsn) field:
  19  * if IPv4, decrement the inner IP header TTL field (byte 8);
  20  * if IPv6 decrement the inner IP header Hop Limit field (byte 7).
  21 */
  22 #define PDBHMO_ESP_DECAP_DEC_TTL        (0x02 << PDBHMO_ESP_DECAP_SHIFT)
  23 #define PDBHMO_ESP_ENCAP_DEC_TTL        (0x02 << PDBHMO_ESP_ENCAP_SHIFT)
  24 /*
  25  * Decap - DiffServ Copy - Copy the IPv4 TOS or IPv6 Traffic Class byte
  26  * from the outer IP header to the inner IP header.
  27  */
  28 #define PDBHMO_ESP_DIFFSERV             (0x01 << PDBHMO_ESP_DECAP_SHIFT)
  29 /*
  30  * Encap- Copy DF bit -if an IPv4 tunnel mode outer IP header is coming from
  31  * the PDB, copy the DF bit from the inner IP header to the outer IP header.
  32  */
  33 #define PDBHMO_ESP_DFBIT                (0x04 << PDBHMO_ESP_ENCAP_SHIFT)
  34
  35 /*
  36  * PDB - IPSec ESP Encap/Decap Options
  37  */
  38 #define PDBOPTS_ESP_ARSNONE     0x00 /* no antireplay window */
  39 #define PDBOPTS_ESP_ARS32       0x40 /* 32-entry antireplay window */
  40 #define PDBOPTS_ESP_ARS64       0xc0 /* 64-entry antireplay window */
  41 #define PDBOPTS_ESP_IVSRC       0x20 /* IV comes from internal random gen */
  42 #define PDBOPTS_ESP_ESN         0x10 /* extended sequence included */
  43 #define PDBOPTS_ESP_OUTFMT      0x08 /* output only decapsulation (decap) */
  44 #define PDBOPTS_ESP_IPHDRSRC    0x08 /* IP header comes from PDB (encap) */
  45 #define PDBOPTS_ESP_INCIPHDR    0x04 /* Prepend IP header to output frame */
  46 #define PDBOPTS_ESP_IPVSN       0x02 /* process IPv6 header */
  47 #define PDBOPTS_ESP_AOFL        0x04 /* adjust out frame len (decap, SEC>=5.3)*/
  48 #define PDBOPTS_ESP_TUNNEL      0x01 /* tunnel mode next-header byte */
  49 #define PDBOPTS_ESP_IPV6        0x02 /* ip header version is V6 */
  50 #define PDBOPTS_ESP_DIFFSERV    0x40 /* copy TOS/TC from inner iphdr */
  51 #define PDBOPTS_ESP_UPDATE_CSUM 0x80 /* encap-update ip header checksum */
  52 #define PDBOPTS_ESP_VERIFY_CSUM 0x20 /* decap-validate ip header checksum */
  53
  54 /*
  55  * General IPSec encap/decap PDB definitions
  56  */
  57 struct ipsec_encap_cbc {
  58         u32 iv[4];
  59 };
  60
  61 struct ipsec_encap_ctr {
  62         u32 ctr_nonce;
  63         u32 ctr_initial;
  64         u32 iv[2];
  65 };
  66
  67 struct ipsec_encap_ccm {
  68         u32 salt; /* lower 24 bits */
  69         u8 b0_flags;
  70         u8 ctr_flags;
  71         u16 ctr_initial;
  72         u32 iv[2];
  73 };
  74
  75 struct ipsec_encap_gcm {
  76         u32 salt; /* lower 24 bits */
  77         u32 rsvd1;
  78         u32 iv[2];
  79 };
  80
  81 struct ipsec_encap_pdb {
  82         u8 hmo_rsvd;
  83         u8 ip_nh;
  84         u8 ip_nh_offset;
  85         u8 options;
  86         u32 seq_num_ext_hi;
  87         u32 seq_num;
  88         union {
  89                 struct ipsec_encap_cbc cbc;
  90                 struct ipsec_encap_ctr ctr;
  91                 struct ipsec_encap_ccm ccm;
  92                 struct ipsec_encap_gcm gcm;
  93         };
  94         u32 spi;
  95         u16 rsvd1;
  96         u16 ip_hdr_len;
  97         u32 ip_hdr[0]; /* optional IP Header content */
  98 };
  99
 100 struct ipsec_decap_cbc {
 101         u32 rsvd[2];
 102 };
 103
 104 struct ipsec_decap_ctr {
 105         u32 salt;
 106         u32 ctr_initial;
 107 };
 108
 109 struct ipsec_decap_ccm {
 110         u32 salt;
 111         u8 iv_flags;
 112         u8 ctr_flags;
 113         u16 ctr_initial;
 114 };
 115
 116 struct ipsec_decap_gcm {
 117         u32 salt;
 118         u32 resvd;
 119 };
 120
 121 struct ipsec_decap_pdb {
 122         u16 hmo_ip_hdr_len;
 123         u8 ip_nh_offset;
 124         u8 options;
 125         union {
 126                 struct ipsec_decap_cbc cbc;
 127                 struct ipsec_decap_ctr ctr;
 128                 struct ipsec_decap_ccm ccm;
 129                 struct ipsec_decap_gcm gcm;
 130         };
 131         u32 seq_num_ext_hi;
 132         u32 seq_num;
 133         u32 anti_replay[2];
 134         u32 end_index[0];
 135 };
 136
 137 /*
 138  * IPSec ESP Datapath Protocol Override Register (DPOVRD)
 139  */
 140 struct ipsec_deco_dpovrd {
 141 #define IPSEC_ENCAP_DECO_DPOVRD_USE 0x80
 142         u8 ovrd_ecn;
 143         u8 ip_hdr_len;
 144         u8 nh_offset;
 145         u8 next_header; /* reserved if decap */
 146 };
 147
 148 /*
 149  * IEEE 802.11i WiFi Protocol Data Block
 150  */
 151 #define WIFI_PDBOPTS_FCS        0x01
 152 #define WIFI_PDBOPTS_AR         0x40
 153
 154 struct wifi_encap_pdb {
 155         u16 mac_hdr_len;
 156         u8 rsvd;
 157         u8 options;
 158         u8 iv_flags;
 159         u8 pri;
 160         u16 pn1;
 161         u32 pn2;
 162         u16 frm_ctrl_mask;
 163         u16 seq_ctrl_mask;
 164         u8 rsvd1[2];
 165         u8 cnst;
 166         u8 key_id;
 167         u8 ctr_flags;
 168         u8 rsvd2;
 169         u16 ctr_init;
 170 };
 171
 172 struct wifi_decap_pdb {
 173         u16 mac_hdr_len;
 174         u8 rsvd;
 175         u8 options;
 176         u8 iv_flags;
 177         u8 pri;
 178         u16 pn1;
 179         u32 pn2;
 180         u16 frm_ctrl_mask;
 181         u16 seq_ctrl_mask;
 182         u8 rsvd1[4];
 183         u8 ctr_flags;
 184         u8 rsvd2;
 185         u16 ctr_init;
 186 };
 187
 188 /*
 189  * IEEE 802.16 WiMAX Protocol Data Block
 190  */
 191 #define WIMAX_PDBOPTS_FCS       0x01
 192 #define WIMAX_PDBOPTS_AR        0x40 /* decap only */
 193
 194 struct wimax_encap_pdb {
 195         u8 rsvd[3];
 196         u8 options;
 197         u32 nonce;
 198         u8 b0_flags;
 199         u8 ctr_flags;
 200         u16 ctr_init;
 201         /* begin DECO writeback region */
 202         u32 pn;
 203         /* end DECO writeback region */
 204 };
 205
 206 struct wimax_decap_pdb {
 207         u8 rsvd[3];
 208         u8 options;
 209         u32 nonce;
 210         u8 iv_flags;
 211         u8 ctr_flags;
 212         u16 ctr_init;
 213         /* begin DECO writeback region */
 214         u32 pn;
 215         u8 rsvd1[2];
 216         u16 antireplay_len;
 217         u64 antireplay_scorecard;
 218         /* end DECO writeback region */
 219 };
 220
 221 /*
 222  * IEEE 801.AE MacSEC Protocol Data Block
 223  */
 224 #define MACSEC_PDBOPTS_FCS      0x01
 225 #define MACSEC_PDBOPTS_AR       0x40 /* used in decap only */
 226
 227 struct macsec_encap_pdb {
 228         u16 aad_len;
 229         u8 rsvd;
 230         u8 options;
 231         u64 sci;
 232         u16 ethertype;
 233         u8 tci_an;
 234         u8 rsvd1;
 235         /* begin DECO writeback region */
 236         u32 pn;
 237         /* end DECO writeback region */
 238 };
 239
 240 struct macsec_decap_pdb {
 241         u16 aad_len;
 242         u8 rsvd;
 243         u8 options;
 244         u64 sci;
 245         u8 rsvd1[3];
 246         /* begin DECO writeback region */
 247         u8 antireplay_len;
 248         u32 pn;
 249         u64 antireplay_scorecard;
 250         /* end DECO writeback region */
 251 };
 252
 253 /*
 254  * SSL/TLS/DTLS Protocol Data Blocks
 255  */
 256
 257 #define TLS_PDBOPTS_ARS32       0x40
 258 #define TLS_PDBOPTS_ARS64       0xc0
 259 #define TLS_PDBOPTS_OUTFMT      0x08
 260 #define TLS_PDBOPTS_IV_WRTBK    0x02 /* 1.1/1.2/DTLS only */
 261 #define TLS_PDBOPTS_EXP_RND_IV  0x01 /* 1.1/1.2/DTLS only */
 262
 263 struct tls_block_encap_pdb {
 264         u8 type;
 265         u8 version[2];
 266         u8 options;
 267         u64 seq_num;
 268         u32 iv[4];
 269 };
 270
 271 struct tls_stream_encap_pdb {
 272         u8 type;
 273         u8 version[2];
 274         u8 options;
 275         u64 seq_num;
 276         u8 i;
 277         u8 j;
 278         u8 rsvd1[2];
 279 };
 280
 281 struct dtls_block_encap_pdb {
 282         u8 type;
 283         u8 version[2];
 284         u8 options;
 285         u16 epoch;
 286         u16 seq_num[3];
 287         u32 iv[4];
 288 };
 289
 290 struct tls_block_decap_pdb {
 291         u8 rsvd[3];
 292         u8 options;
 293         u64 seq_num;
 294         u32 iv[4];
 295 };
 296
 297 struct tls_stream_decap_pdb {
 298         u8 rsvd[3];
 299         u8 options;
 300         u64 seq_num;
 301         u8 i;
 302         u8 j;
 303         u8 rsvd1[2];
 304 };
 305
 306 struct dtls_block_decap_pdb {
 307         u8 rsvd[3];
 308         u8 options;
 309         u16 epoch;
 310         u16 seq_num[3];
 311         u32 iv[4];
 312         u64 antireplay_scorecard;
 313 };
 314
 315 /*
 316  * SRTP Protocol Data Blocks
 317  */
 318 #define SRTP_PDBOPTS_MKI        0x08
 319 #define SRTP_PDBOPTS_AR         0x40
 320
 321 struct srtp_encap_pdb {
 322         u8 x_len;
 323         u8 mki_len;
 324         u8 n_tag;
 325         u8 options;
 326         u32 cnst0;
 327         u8 rsvd[2];
 328         u16 cnst1;
 329         u16 salt[7];
 330         u16 cnst2;
 331         u32 rsvd1;
 332         u32 roc;
 333         u32 opt_mki;
 334 };
 335
 336 struct srtp_decap_pdb {
 337         u8 x_len;
 338         u8 mki_len;
 339         u8 n_tag;
 340         u8 options;
 341         u32 cnst0;
 342         u8 rsvd[2];
 343         u16 cnst1;
 344         u16 salt[7];
 345         u16 cnst2;
 346         u16 rsvd1;
 347         u16 seq_num;
 348         u32 roc;
 349         u64 antireplay_scorecard;
 350 };
 351
 352 /*
 353  * DSA/ECDSA Protocol Data Blocks
 354  * Two of these exist: DSA-SIGN, and DSA-VERIFY. They are similar
 355  * except for the treatment of "w" for verify, "s" for sign,
 356  * and the placement of "a,b".
 357  */
 358 #define DSA_PDB_SGF_SHIFT       24
 359 #define DSA_PDB_SGF_MASK        (0xff << DSA_PDB_SGF_SHIFT)
 360 #define DSA_PDB_SGF_Q           (0x80 << DSA_PDB_SGF_SHIFT)
 361 #define DSA_PDB_SGF_R           (0x40 << DSA_PDB_SGF_SHIFT)
 362 #define DSA_PDB_SGF_G           (0x20 << DSA_PDB_SGF_SHIFT)
 363 #define DSA_PDB_SGF_W           (0x10 << DSA_PDB_SGF_SHIFT)
 364 #define DSA_PDB_SGF_S           (0x10 << DSA_PDB_SGF_SHIFT)
 365 #define DSA_PDB_SGF_F           (0x08 << DSA_PDB_SGF_SHIFT)
 366 #define DSA_PDB_SGF_C           (0x04 << DSA_PDB_SGF_SHIFT)
 367 #define DSA_PDB_SGF_D           (0x02 << DSA_PDB_SGF_SHIFT)
 368 #define DSA_PDB_SGF_AB_SIGN     (0x02 << DSA_PDB_SGF_SHIFT)
 369 #define DSA_PDB_SGF_AB_VERIFY   (0x01 << DSA_PDB_SGF_SHIFT)
 370
 371 #define DSA_PDB_L_SHIFT         7
 372 #define DSA_PDB_L_MASK          (0x3ff << DSA_PDB_L_SHIFT)
 373
 374 #define DSA_PDB_N_MASK          0x7f
 375
 376 struct dsa_sign_pdb {
 377         u32 sgf_ln; /* Use DSA_PDB_ defintions per above */
 378         u8 *q;
 379         u8 *r;
 380         u8 *g;  /* or Gx,y */
 381         u8 *s;
 382         u8 *f;
 383         u8 *c;
 384         u8 *d;
 385         u8 *ab; /* ECC only */
 386         u8 *u;
 387 };
 388
 389 struct dsa_verify_pdb {
 390         u32 sgf_ln;
 391         u8 *q;
 392         u8 *r;
 393         u8 *g;  /* or Gx,y */
 394         u8 *w; /* or Wx,y */
 395         u8 *f;
 396         u8 *c;
 397         u8 *d;
 398         u8 *tmp; /* temporary data block */
 399         u8 *ab; /* only used if ECC processing */
 400 };
 401
 402 #endif