drivers/net/cnxk/cn10k_ethdev_sec.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2021 Marvell.
   3  */
   4
   5 #include <rte_cryptodev.h>
   6 #include <rte_eventdev.h>
   7 #include <rte_security.h>
   8 #include <rte_security_driver.h>
   9
  10 #include <cn10k_ethdev.h>
  11 #include <cnxk_security.h>
  12
  13 static struct rte_cryptodev_capabilities cn10k_eth_sec_crypto_caps[] = {
  14         {       /* AES GCM */
  15                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  16                 {.sym = {
  17                         .xform_type = RTE_CRYPTO_SYM_XFORM_AEAD,
  18                         {.aead = {
  19                                 .algo = RTE_CRYPTO_AEAD_AES_GCM,
  20                                 .block_size = 16,
  21                                 .key_size = {
  22                                         .min = 16,
  23                                         .max = 32,
  24                                         .increment = 8
  25                                 },
  26                                 .digest_size = {
  27                                         .min = 16,
  28                                         .max = 16,
  29                                         .increment = 0
  30                                 },
  31                                 .aad_size = {
  32                                         .min = 8,
  33                                         .max = 12,
  34                                         .increment = 4
  35                                 },
  36                                 .iv_size = {
  37                                         .min = 12,
  38                                         .max = 12,
  39                                         .increment = 0
  40                                 }
  41                         }, }
  42                 }, }
  43         },
  44         {       /* AES CBC */
  45                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  46                 {.sym = {
  47                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
  48                         {.cipher = {
  49                                 .algo = RTE_CRYPTO_CIPHER_AES_CBC,
  50                                 .block_size = 16,
  51                                 .key_size = {
  52                                         .min = 16,
  53                                         .max = 32,
  54                                         .increment = 8
  55                                 },
  56                                 .iv_size = {
  57                                         .min = 16,
  58                                         .max = 16,
  59                                         .increment = 0
  60                                 }
  61                         }, }
  62                 }, }
  63         },
  64         {       /* SHA1 HMAC */
  65                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  66                 {.sym = {
  67                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
  68                         {.auth = {
  69                                 .algo = RTE_CRYPTO_AUTH_SHA1_HMAC,
  70                                 .block_size = 64,
  71                                 .key_size = {
  72                                         .min = 20,
  73                                         .max = 64,
  74                                         .increment = 1
  75                                 },
  76                                 .digest_size = {
  77                                         .min = 12,
  78                                         .max = 12,
  79                                         .increment = 0
  80                                 },
  81                         }, }
  82                 }, }
  83         },
  84         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
  85 };
  86
  87 static const struct rte_security_capability cn10k_eth_sec_capabilities[] = {
  88         {       /* IPsec Inline Protocol ESP Tunnel Ingress */
  89                 .action = RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL,
  90                 .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
  91                 .ipsec = {
  92                         .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP,
  93                         .mode = RTE_SECURITY_IPSEC_SA_MODE_TUNNEL,
  94                         .direction = RTE_SECURITY_IPSEC_SA_DIR_INGRESS,
  95                         .options = { 0 }
  96                 },
  97                 .crypto_capabilities = cn10k_eth_sec_crypto_caps,
  98                 .ol_flags = RTE_SECURITY_TX_OLOAD_NEED_MDATA
  99         },
 100         {       /* IPsec Inline Protocol ESP Tunnel Egress */
 101                 .action = RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL,
 102                 .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
 103                 .ipsec = {
 104                         .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP,
 105                         .mode = RTE_SECURITY_IPSEC_SA_MODE_TUNNEL,
 106                         .direction = RTE_SECURITY_IPSEC_SA_DIR_EGRESS,
 107                         .options = { 0 }
 108                 },
 109                 .crypto_capabilities = cn10k_eth_sec_crypto_caps,
 110                 .ol_flags = RTE_SECURITY_TX_OLOAD_NEED_MDATA
 111         },
 112         {       /* IPsec Inline Protocol ESP Transport Egress */
 113                 .action = RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL,
 114                 .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
 115                 .ipsec = {
 116                         .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP,
 117                         .mode = RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT,
 118                         .direction = RTE_SECURITY_IPSEC_SA_DIR_EGRESS,
 119                         .options = { 0 }
 120                 },
 121                 .crypto_capabilities = cn10k_eth_sec_crypto_caps,
 122                 .ol_flags = RTE_SECURITY_TX_OLOAD_NEED_MDATA
 123         },
 124         {       /* IPsec Inline Protocol ESP Transport Ingress */
 125                 .action = RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL,
 126                 .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
 127                 .ipsec = {
 128                         .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP,
 129                         .mode = RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT,
 130                         .direction = RTE_SECURITY_IPSEC_SA_DIR_INGRESS,
 131                         .options = { 0 }
 132                 },
 133                 .crypto_capabilities = cn10k_eth_sec_crypto_caps,
 134                 .ol_flags = RTE_SECURITY_TX_OLOAD_NEED_MDATA
 135         },
 136         {
 137                 .action = RTE_SECURITY_ACTION_TYPE_NONE
 138         }
 139 };
 140
 141 static void
 142 cn10k_eth_sec_sso_work_cb(uint64_t *gw, void *args)
 143 {
 144         struct rte_eth_event_ipsec_desc desc;
 145         struct cn10k_sec_sess_priv sess_priv;
 146         struct cn10k_outb_priv_data *priv;
 147         struct roc_ot_ipsec_outb_sa *sa;
 148         struct cpt_cn10k_res_s *res;
 149         struct rte_eth_dev *eth_dev;
 150         struct cnxk_eth_dev *dev;
 151         uint16_t dlen_adj, rlen;
 152         struct rte_mbuf *mbuf;
 153         uintptr_t sa_base;
 154         uintptr_t nixtx;
 155         uint8_t port;
 156
 157         RTE_SET_USED(args);
 158
 159         switch ((gw[0] >> 28) & 0xF) {
 160         case RTE_EVENT_TYPE_ETHDEV:
 161                 /* Event from inbound inline dev due to IPSEC packet bad L4 */
 162                 mbuf = (struct rte_mbuf *)(gw[1] - sizeof(struct rte_mbuf));
 163                 plt_nix_dbg("Received mbuf %p from inline dev inbound", mbuf);
 164                 rte_pktmbuf_free(mbuf);
 165                 return;
 166         case RTE_EVENT_TYPE_CPU:
 167                 /* Check for subtype */
 168                 if (((gw[0] >> 20) & 0xFF) == CNXK_ETHDEV_SEC_OUTB_EV_SUB) {
 169                         /* Event from outbound inline error */
 170                         mbuf = (struct rte_mbuf *)gw[1];
 171                         break;
 172                 }
 173                 /* Fall through */
 174         default:
 175                 plt_err("Unknown event gw[0] = 0x%016lx, gw[1] = 0x%016lx",
 176                         gw[0], gw[1]);
 177                 return;
 178         }
 179
 180         /* Get ethdev port from tag */
 181         port = gw[0] & 0xFF;
 182         eth_dev = &rte_eth_devices[port];
 183         dev = cnxk_eth_pmd_priv(eth_dev);
 184
 185         sess_priv.u64 = *rte_security_dynfield(mbuf);
 186         /* Calculate dlen adj */
 187         dlen_adj = mbuf->pkt_len - mbuf->l2_len;
 188         rlen = (dlen_adj + sess_priv.roundup_len) +
 189                (sess_priv.roundup_byte - 1);
 190         rlen &= ~(uint64_t)(sess_priv.roundup_byte - 1);
 191         rlen += sess_priv.partial_len;
 192         dlen_adj = rlen - dlen_adj;
 193
 194         /* Find the res area residing on next cacheline after end of data */
 195         nixtx = rte_pktmbuf_mtod(mbuf, uintptr_t) + mbuf->pkt_len + dlen_adj;
 196         nixtx += BIT_ULL(7);
 197         nixtx = (nixtx - 1) & ~(BIT_ULL(7) - 1);
 198         res = (struct cpt_cn10k_res_s *)nixtx;
 199
 200         plt_nix_dbg("Outbound error, mbuf %p, sa_index %u, compcode %x uc %x",
 201                     mbuf, sess_priv.sa_idx, res->compcode, res->uc_compcode);
 202
 203         sess_priv.u64 = *rte_security_dynfield(mbuf);
 204
 205         sa_base = dev->outb.sa_base;
 206         sa = roc_nix_inl_ot_ipsec_outb_sa(sa_base, sess_priv.sa_idx);
 207         priv = roc_nix_inl_ot_ipsec_outb_sa_sw_rsvd(sa);
 208
 209         memset(&desc, 0, sizeof(desc));
 210
 211         switch (res->uc_compcode) {
 212         case ROC_IE_OT_UCC_ERR_SA_OVERFLOW:
 213                 desc.subtype = RTE_ETH_EVENT_IPSEC_ESN_OVERFLOW;
 214                 break;
 215         default:
 216                 plt_warn("Outbound error, mbuf %p, sa_index %u, "
 217                          "compcode %x uc %x", mbuf, sess_priv.sa_idx,
 218                          res->compcode, res->uc_compcode);
 219                 desc.subtype = RTE_ETH_EVENT_IPSEC_UNKNOWN;
 220                 break;
 221         }
 222
 223         desc.metadata = (uint64_t)priv->userdata;
 224         rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_IPSEC, &desc);
 225         rte_pktmbuf_free(mbuf);
 226 }
 227
 228 static int
 229 cn10k_eth_sec_session_create(void *device,
 230                              struct rte_security_session_conf *conf,
 231                              struct rte_security_session *sess,
 232                              struct rte_mempool *mempool)
 233 {
 234         struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)device;
 235         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 236         struct rte_security_ipsec_xform *ipsec;
 237         struct cn10k_sec_sess_priv sess_priv;
 238         struct rte_crypto_sym_xform *crypto;
 239         struct cnxk_eth_sec_sess *eth_sec;
 240         bool inbound, inl_dev;
 241         int rc = 0;
 242
 243         if (conf->action_type != RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL)
 244                 return -ENOTSUP;
 245
 246         if (conf->protocol != RTE_SECURITY_PROTOCOL_IPSEC)
 247                 return -ENOTSUP;
 248
 249         if (rte_security_dynfield_register() < 0)
 250                 return -ENOTSUP;
 251
 252         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 253                 roc_nix_inl_cb_register(cn10k_eth_sec_sso_work_cb, NULL);
 254
 255         ipsec = &conf->ipsec;
 256         crypto = conf->crypto_xform;
 257         inbound = !!(ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 258         inl_dev = !!dev->inb.inl_dev;
 259
 260         /* Search if a session already exits */
 261         if (cnxk_eth_sec_sess_get_by_spi(dev, ipsec->spi, inbound)) {
 262                 plt_err("%s SA with SPI %u already in use",
 263                         inbound ? "Inbound" : "Outbound", ipsec->spi);
 264                 return -EEXIST;
 265         }
 266
 267         if (rte_mempool_get(mempool, (void **)&eth_sec)) {
 268                 plt_err("Could not allocate security session private data");
 269                 return -ENOMEM;
 270         }
 271
 272         memset(eth_sec, 0, sizeof(struct cnxk_eth_sec_sess));
 273         sess_priv.u64 = 0;
 274
 275         /* Acquire lock on inline dev for inbound */
 276         if (inbound && inl_dev)
 277                 roc_nix_inl_dev_lock();
 278
 279         if (inbound) {
 280                 struct cn10k_inb_priv_data *inb_priv;
 281                 struct roc_ot_ipsec_inb_sa *inb_sa;
 282                 uintptr_t sa;
 283
 284                 PLT_STATIC_ASSERT(sizeof(struct cn10k_inb_priv_data) <
 285                                   ROC_NIX_INL_OT_IPSEC_INB_SW_RSVD);
 286
 287                 /* Get Inbound SA from NIX_RX_IPSEC_SA_BASE */
 288                 sa = roc_nix_inl_inb_sa_get(&dev->nix, inl_dev, ipsec->spi);
 289                 if (!sa && dev->inb.inl_dev) {
 290                         plt_err("Failed to create ingress sa, inline dev "
 291                                 "not found or spi not in range");
 292                         rc = -ENOTSUP;
 293                         goto mempool_put;
 294                 } else if (!sa) {
 295                         plt_err("Failed to create ingress sa");
 296                         rc = -EFAULT;
 297                         goto mempool_put;
 298                 }
 299
 300                 inb_sa = (struct roc_ot_ipsec_inb_sa *)sa;
 301
 302                 /* Check if SA is already in use */
 303                 if (inb_sa->w2.s.valid) {
 304                         plt_err("Inbound SA with SPI %u already in use",
 305                                 ipsec->spi);
 306                         rc = -EBUSY;
 307                         goto mempool_put;
 308                 }
 309
 310                 memset(inb_sa, 0, sizeof(struct roc_ot_ipsec_inb_sa));
 311
 312                 /* Fill inbound sa params */
 313                 rc = cnxk_ot_ipsec_inb_sa_fill(inb_sa, ipsec, crypto);
 314                 if (rc) {
 315                         plt_err("Failed to init inbound sa, rc=%d", rc);
 316                         goto mempool_put;
 317                 }
 318
 319                 inb_priv = roc_nix_inl_ot_ipsec_inb_sa_sw_rsvd(inb_sa);
 320                 /* Back pointer to get eth_sec */
 321                 inb_priv->eth_sec = eth_sec;
 322                 /* Save userdata in inb private area */
 323                 inb_priv->userdata = conf->userdata;
 324
 325                 /* Save SA index/SPI in cookie for now */
 326                 inb_sa->w1.s.cookie = rte_cpu_to_be_32(ipsec->spi);
 327
 328                 /* Prepare session priv */
 329                 sess_priv.inb_sa = 1;
 330                 sess_priv.sa_idx = ipsec->spi;
 331
 332                 /* Pointer from eth_sec -> inb_sa */
 333                 eth_sec->sa = inb_sa;
 334                 eth_sec->sess = sess;
 335                 eth_sec->sa_idx = ipsec->spi;
 336                 eth_sec->spi = ipsec->spi;
 337                 eth_sec->inl_dev = !!dev->inb.inl_dev;
 338                 eth_sec->inb = true;
 339
 340                 TAILQ_INSERT_TAIL(&dev->inb.list, eth_sec, entry);
 341                 dev->inb.nb_sess++;
 342         } else {
 343                 struct cn10k_outb_priv_data *outb_priv;
 344                 struct roc_ot_ipsec_outb_sa *outb_sa;
 345                 struct cnxk_ipsec_outb_rlens *rlens;
 346                 uint64_t sa_base = dev->outb.sa_base;
 347                 uint32_t sa_idx;
 348
 349                 PLT_STATIC_ASSERT(sizeof(struct cn10k_outb_priv_data) <
 350                                   ROC_NIX_INL_OT_IPSEC_OUTB_SW_RSVD);
 351
 352                 /* Alloc an sa index */
 353                 rc = cnxk_eth_outb_sa_idx_get(dev, &sa_idx);
 354                 if (rc)
 355                         goto mempool_put;
 356
 357                 outb_sa = roc_nix_inl_ot_ipsec_outb_sa(sa_base, sa_idx);
 358                 outb_priv = roc_nix_inl_ot_ipsec_outb_sa_sw_rsvd(outb_sa);
 359                 rlens = &outb_priv->rlens;
 360
 361                 memset(outb_sa, 0, sizeof(struct roc_ot_ipsec_outb_sa));
 362
 363                 /* Fill outbound sa params */
 364                 rc = cnxk_ot_ipsec_outb_sa_fill(outb_sa, ipsec, crypto);
 365                 if (rc) {
 366                         plt_err("Failed to init outbound sa, rc=%d", rc);
 367                         rc |= cnxk_eth_outb_sa_idx_put(dev, sa_idx);
 368                         goto mempool_put;
 369                 }
 370
 371                 /* Save userdata */
 372                 outb_priv->userdata = conf->userdata;
 373                 outb_priv->sa_idx = sa_idx;
 374                 outb_priv->eth_sec = eth_sec;
 375
 376                 /* Save rlen info */
 377                 cnxk_ipsec_outb_rlens_get(rlens, ipsec, crypto);
 378
 379                 /* Prepare session priv */
 380                 sess_priv.sa_idx = outb_priv->sa_idx;
 381                 sess_priv.roundup_byte = rlens->roundup_byte;
 382                 sess_priv.roundup_len = rlens->roundup_len;
 383                 sess_priv.partial_len = rlens->partial_len;
 384                 sess_priv.mode = outb_sa->w2.s.ipsec_mode;
 385                 sess_priv.outer_ip_ver = outb_sa->w2.s.outer_ip_ver;
 386
 387                 /* Pointer from eth_sec -> outb_sa */
 388                 eth_sec->sa = outb_sa;
 389                 eth_sec->sess = sess;
 390                 eth_sec->sa_idx = sa_idx;
 391                 eth_sec->spi = ipsec->spi;
 392
 393                 TAILQ_INSERT_TAIL(&dev->outb.list, eth_sec, entry);
 394                 dev->outb.nb_sess++;
 395         }
 396
 397         /* Sync session in context cache */
 398         roc_nix_inl_sa_sync(&dev->nix, eth_sec->sa, eth_sec->inb,
 399                             ROC_NIX_INL_SA_OP_RELOAD);
 400
 401         if (inbound && inl_dev)
 402                 roc_nix_inl_dev_unlock();
 403
 404         plt_nix_dbg("Created %s session with spi=%u, sa_idx=%u inl_dev=%u",
 405                     inbound ? "inbound" : "outbound", eth_sec->spi,
 406                     eth_sec->sa_idx, eth_sec->inl_dev);
 407         /*
 408          * Update fast path info in priv area.
 409          */
 410         set_sec_session_private_data(sess, (void *)sess_priv.u64);
 411
 412         return 0;
 413 mempool_put:
 414         if (inbound && inl_dev)
 415                 roc_nix_inl_dev_unlock();
 416         rte_mempool_put(mempool, eth_sec);
 417         return rc;
 418 }
 419
 420 static int
 421 cn10k_eth_sec_session_destroy(void *device, struct rte_security_session *sess)
 422 {
 423         struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)device;
 424         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 425         struct roc_ot_ipsec_inb_sa *inb_sa;
 426         struct roc_ot_ipsec_outb_sa *outb_sa;
 427         struct cnxk_eth_sec_sess *eth_sec;
 428         struct rte_mempool *mp;
 429
 430         eth_sec = cnxk_eth_sec_sess_get_by_sess(dev, sess);
 431         if (!eth_sec)
 432                 return -ENOENT;
 433
 434         if (eth_sec->inl_dev)
 435                 roc_nix_inl_dev_lock();
 436
 437         if (eth_sec->inb) {
 438                 inb_sa = eth_sec->sa;
 439                 /* Disable SA */
 440                 inb_sa->w2.s.valid = 0;
 441
 442                 TAILQ_REMOVE(&dev->inb.list, eth_sec, entry);
 443                 dev->inb.nb_sess--;
 444         } else {
 445                 outb_sa = eth_sec->sa;
 446                 /* Disable SA */
 447                 outb_sa->w2.s.valid = 0;
 448
 449                 /* Release Outbound SA index */
 450                 cnxk_eth_outb_sa_idx_put(dev, eth_sec->sa_idx);
 451                 TAILQ_REMOVE(&dev->outb.list, eth_sec, entry);
 452                 dev->outb.nb_sess--;
 453         }
 454
 455         /* Sync session in context cache */
 456         roc_nix_inl_sa_sync(&dev->nix, eth_sec->sa, eth_sec->inb,
 457                             ROC_NIX_INL_SA_OP_RELOAD);
 458
 459         if (eth_sec->inl_dev)
 460                 roc_nix_inl_dev_unlock();
 461
 462         plt_nix_dbg("Destroyed %s session with spi=%u, sa_idx=%u, inl_dev=%u",
 463                     eth_sec->inb ? "inbound" : "outbound", eth_sec->spi,
 464                     eth_sec->sa_idx, eth_sec->inl_dev);
 465
 466         /* Put eth_sec object back to pool */
 467         mp = rte_mempool_from_obj(eth_sec);
 468         set_sec_session_private_data(sess, NULL);
 469         rte_mempool_put(mp, eth_sec);
 470         return 0;
 471 }
 472
 473 static const struct rte_security_capability *
 474 cn10k_eth_sec_capabilities_get(void *device __rte_unused)
 475 {
 476         return cn10k_eth_sec_capabilities;
 477 }
 478
 479 void
 480 cn10k_eth_sec_ops_override(void)
 481 {
 482         static int init_once;
 483
 484         if (init_once)
 485                 return;
 486         init_once = 1;
 487
 488         /* Update platform specific ops */
 489         cnxk_eth_sec_ops.session_create = cn10k_eth_sec_session_create;
 490         cnxk_eth_sec_ops.session_destroy = cn10k_eth_sec_session_destroy;
 491         cnxk_eth_sec_ops.capabilities_get = cn10k_eth_sec_capabilities_get;
 492 }