drivers/net/cnxk/cn9k_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_security.h>
   7 #include <rte_security_driver.h>
   8
   9 #include <cn9k_ethdev.h>
  10 #include <cnxk_security.h>
  11
  12 static struct rte_cryptodev_capabilities cn9k_eth_sec_crypto_caps[] = {
  13         {       /* AES GCM */
  14                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  15                 {.sym = {
  16                         .xform_type = RTE_CRYPTO_SYM_XFORM_AEAD,
  17                         {.aead = {
  18                                 .algo = RTE_CRYPTO_AEAD_AES_GCM,
  19                                 .block_size = 16,
  20                                 .key_size = {
  21                                         .min = 16,
  22                                         .max = 32,
  23                                         .increment = 8
  24                                 },
  25                                 .digest_size = {
  26                                         .min = 16,
  27                                         .max = 16,
  28                                         .increment = 0
  29                                 },
  30                                 .aad_size = {
  31                                         .min = 8,
  32                                         .max = 12,
  33                                         .increment = 4
  34                                 },
  35                                 .iv_size = {
  36                                         .min = 12,
  37                                         .max = 12,
  38                                         .increment = 0
  39                                 }
  40                         }, }
  41                 }, }
  42         },
  43         {       /* AES CBC */
  44                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  45                 {.sym = {
  46                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
  47                         {.cipher = {
  48                                 .algo = RTE_CRYPTO_CIPHER_AES_CBC,
  49                                 .block_size = 16,
  50                                 .key_size = {
  51                                         .min = 16,
  52                                         .max = 32,
  53                                         .increment = 8
  54                                 },
  55                                 .iv_size = {
  56                                         .min = 16,
  57                                         .max = 16,
  58                                         .increment = 0
  59                                 }
  60                         }, }
  61                 }, }
  62         },
  63         {       /* SHA1 HMAC */
  64                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  65                 {.sym = {
  66                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
  67                         {.auth = {
  68                                 .algo = RTE_CRYPTO_AUTH_SHA1_HMAC,
  69                                 .block_size = 64,
  70                                 .key_size = {
  71                                         .min = 20,
  72                                         .max = 64,
  73                                         .increment = 1
  74                                 },
  75                                 .digest_size = {
  76                                         .min = 12,
  77                                         .max = 12,
  78                                         .increment = 0
  79                                 },
  80                         }, }
  81                 }, }
  82         },
  83         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
  84 };
  85
  86 static const struct rte_security_capability cn9k_eth_sec_capabilities[] = {
  87         {       /* IPsec Inline Protocol ESP Tunnel Ingress */
  88                 .action = RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL,
  89                 .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
  90                 .ipsec = {
  91                         .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP,
  92                         .mode = RTE_SECURITY_IPSEC_SA_MODE_TUNNEL,
  93                         .direction = RTE_SECURITY_IPSEC_SA_DIR_INGRESS,
  94                         .options = { 0 }
  95                 },
  96                 .crypto_capabilities = cn9k_eth_sec_crypto_caps,
  97                 .ol_flags = RTE_SECURITY_TX_OLOAD_NEED_MDATA
  98         },
  99         {       /* IPsec Inline Protocol ESP Tunnel Egress */
 100                 .action = RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL,
 101                 .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
 102                 .ipsec = {
 103                         .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP,
 104                         .mode = RTE_SECURITY_IPSEC_SA_MODE_TUNNEL,
 105                         .direction = RTE_SECURITY_IPSEC_SA_DIR_EGRESS,
 106                         .options = { 0 }
 107                 },
 108                 .crypto_capabilities = cn9k_eth_sec_crypto_caps,
 109                 .ol_flags = RTE_SECURITY_TX_OLOAD_NEED_MDATA
 110         },
 111         {
 112                 .action = RTE_SECURITY_ACTION_TYPE_NONE
 113         }
 114 };
 115
 116 static inline int
 117 ar_window_init(struct cn9k_inb_priv_data *inb_priv)
 118 {
 119         if (inb_priv->replay_win_sz > CNXK_ON_AR_WIN_SIZE_MAX) {
 120                 plt_err("Replay window size:%u is not supported",
 121                         inb_priv->replay_win_sz);
 122                 return -ENOTSUP;
 123         }
 124
 125         rte_spinlock_init(&inb_priv->ar.lock);
 126         /*
 127          * Set window bottom to 1, base and top to size of
 128          * window
 129          */
 130         inb_priv->ar.winb = 1;
 131         inb_priv->ar.wint = inb_priv->replay_win_sz;
 132         inb_priv->ar.base = inb_priv->replay_win_sz;
 133
 134         return 0;
 135 }
 136
 137 static int
 138 cn9k_eth_sec_session_create(void *device,
 139                             struct rte_security_session_conf *conf,
 140                             struct rte_security_session *sess,
 141                             struct rte_mempool *mempool)
 142 {
 143         struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)device;
 144         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 145         struct rte_security_ipsec_xform *ipsec;
 146         struct cn9k_sec_sess_priv sess_priv;
 147         struct rte_crypto_sym_xform *crypto;
 148         struct cnxk_eth_sec_sess *eth_sec;
 149         bool inbound;
 150         int rc = 0;
 151
 152         if (conf->action_type != RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL)
 153                 return -ENOTSUP;
 154
 155         if (conf->protocol != RTE_SECURITY_PROTOCOL_IPSEC)
 156                 return -ENOTSUP;
 157
 158         if (rte_security_dynfield_register() < 0)
 159                 return -ENOTSUP;
 160
 161         ipsec = &conf->ipsec;
 162         crypto = conf->crypto_xform;
 163         inbound = !!(ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 164
 165         /* Search if a session already exists */
 166         if (cnxk_eth_sec_sess_get_by_spi(dev, ipsec->spi, inbound)) {
 167                 plt_err("%s SA with SPI %u already in use",
 168                         inbound ? "Inbound" : "Outbound", ipsec->spi);
 169                 return -EEXIST;
 170         }
 171
 172         if (rte_mempool_get(mempool, (void **)&eth_sec)) {
 173                 plt_err("Could not allocate security session private data");
 174                 return -ENOMEM;
 175         }
 176
 177         memset(eth_sec, 0, sizeof(struct cnxk_eth_sec_sess));
 178         sess_priv.u64 = 0;
 179
 180         if (inbound) {
 181                 struct cn9k_inb_priv_data *inb_priv;
 182                 struct roc_onf_ipsec_inb_sa *inb_sa;
 183
 184                 PLT_STATIC_ASSERT(sizeof(struct cn9k_inb_priv_data) <
 185                                   ROC_NIX_INL_ONF_IPSEC_INB_SW_RSVD);
 186
 187                 /* Get Inbound SA from NIX_RX_IPSEC_SA_BASE. Assume no inline
 188                  * device always for CN9K.
 189                  */
 190                 inb_sa = (struct roc_onf_ipsec_inb_sa *)
 191                         roc_nix_inl_inb_sa_get(&dev->nix, false, ipsec->spi);
 192                 if (!inb_sa) {
 193                         plt_err("Failed to create ingress sa");
 194                         rc = -EFAULT;
 195                         goto mempool_put;
 196                 }
 197
 198                 /* Check if SA is already in use */
 199                 if (inb_sa->ctl.valid) {
 200                         plt_err("Inbound SA with SPI %u already in use",
 201                                 ipsec->spi);
 202                         rc = -EBUSY;
 203                         goto mempool_put;
 204                 }
 205
 206                 memset(inb_sa, 0, sizeof(struct roc_onf_ipsec_inb_sa));
 207
 208                 /* Fill inbound sa params */
 209                 rc = cnxk_onf_ipsec_inb_sa_fill(inb_sa, ipsec, crypto);
 210                 if (rc) {
 211                         plt_err("Failed to init inbound sa, rc=%d", rc);
 212                         goto mempool_put;
 213                 }
 214
 215                 inb_priv = roc_nix_inl_onf_ipsec_inb_sa_sw_rsvd(inb_sa);
 216                 /* Back pointer to get eth_sec */
 217                 inb_priv->eth_sec = eth_sec;
 218
 219                 /* Save userdata in inb private area */
 220                 inb_priv->userdata = conf->userdata;
 221
 222                 inb_priv->replay_win_sz = ipsec->replay_win_sz;
 223                 if (inb_priv->replay_win_sz) {
 224                         rc = ar_window_init(inb_priv);
 225                         if (rc)
 226                                 goto mempool_put;
 227                 }
 228
 229                 /* Prepare session priv */
 230                 sess_priv.inb_sa = 1;
 231                 sess_priv.sa_idx = ipsec->spi;
 232
 233                 /* Pointer from eth_sec -> inb_sa */
 234                 eth_sec->sa = inb_sa;
 235                 eth_sec->sess = sess;
 236                 eth_sec->sa_idx = ipsec->spi;
 237                 eth_sec->spi = ipsec->spi;
 238                 eth_sec->inb = true;
 239
 240                 TAILQ_INSERT_TAIL(&dev->inb.list, eth_sec, entry);
 241                 dev->inb.nb_sess++;
 242         } else {
 243                 struct cn9k_outb_priv_data *outb_priv;
 244                 struct roc_onf_ipsec_outb_sa *outb_sa;
 245                 uintptr_t sa_base = dev->outb.sa_base;
 246                 struct cnxk_ipsec_outb_rlens *rlens;
 247                 uint32_t sa_idx;
 248
 249                 PLT_STATIC_ASSERT(sizeof(struct cn9k_outb_priv_data) <
 250                                   ROC_NIX_INL_ONF_IPSEC_OUTB_SW_RSVD);
 251
 252                 /* Alloc an sa index */
 253                 rc = cnxk_eth_outb_sa_idx_get(dev, &sa_idx);
 254                 if (rc)
 255                         goto mempool_put;
 256
 257                 outb_sa = roc_nix_inl_onf_ipsec_outb_sa(sa_base, sa_idx);
 258                 outb_priv = roc_nix_inl_onf_ipsec_outb_sa_sw_rsvd(outb_sa);
 259                 rlens = &outb_priv->rlens;
 260
 261                 memset(outb_sa, 0, sizeof(struct roc_onf_ipsec_outb_sa));
 262
 263                 /* Fill outbound sa params */
 264                 rc = cnxk_onf_ipsec_outb_sa_fill(outb_sa, ipsec, crypto);
 265                 if (rc) {
 266                         plt_err("Failed to init outbound sa, rc=%d", rc);
 267                         rc |= cnxk_eth_outb_sa_idx_put(dev, sa_idx);
 268                         goto mempool_put;
 269                 }
 270
 271                 /* Save userdata */
 272                 outb_priv->userdata = conf->userdata;
 273                 outb_priv->sa_idx = sa_idx;
 274                 outb_priv->eth_sec = eth_sec;
 275                 /* Start sequence number with 1 */
 276                 outb_priv->seq = 1;
 277
 278                 memcpy(&outb_priv->nonce, outb_sa->nonce, 4);
 279                 if (outb_sa->ctl.enc_type == ROC_IE_ON_SA_ENC_AES_GCM)
 280                         outb_priv->copy_salt = 1;
 281
 282                 /* Save rlen info */
 283                 cnxk_ipsec_outb_rlens_get(rlens, ipsec, crypto);
 284
 285                 sess_priv.sa_idx = outb_priv->sa_idx;
 286                 sess_priv.roundup_byte = rlens->roundup_byte;
 287                 sess_priv.roundup_len = rlens->roundup_len;
 288                 sess_priv.partial_len = rlens->partial_len;
 289
 290                 /* Pointer from eth_sec -> outb_sa */
 291                 eth_sec->sa = outb_sa;
 292                 eth_sec->sess = sess;
 293                 eth_sec->sa_idx = sa_idx;
 294                 eth_sec->spi = ipsec->spi;
 295
 296                 TAILQ_INSERT_TAIL(&dev->outb.list, eth_sec, entry);
 297                 dev->outb.nb_sess++;
 298         }
 299
 300         /* Sync SA content */
 301         plt_atomic_thread_fence(__ATOMIC_ACQ_REL);
 302
 303         plt_nix_dbg("Created %s session with spi=%u, sa_idx=%u",
 304                     inbound ? "inbound" : "outbound", eth_sec->spi,
 305                     eth_sec->sa_idx);
 306         /*
 307          * Update fast path info in priv area.
 308          */
 309         set_sec_session_private_data(sess, (void *)sess_priv.u64);
 310
 311         return 0;
 312 mempool_put:
 313         rte_mempool_put(mempool, eth_sec);
 314         return rc;
 315 }
 316
 317 static int
 318 cn9k_eth_sec_session_destroy(void *device, struct rte_security_session *sess)
 319 {
 320         struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)device;
 321         struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
 322         struct roc_onf_ipsec_outb_sa *outb_sa;
 323         struct roc_onf_ipsec_inb_sa *inb_sa;
 324         struct cnxk_eth_sec_sess *eth_sec;
 325         struct rte_mempool *mp;
 326
 327         eth_sec = cnxk_eth_sec_sess_get_by_sess(dev, sess);
 328         if (!eth_sec)
 329                 return -ENOENT;
 330
 331         if (eth_sec->inb) {
 332                 inb_sa = eth_sec->sa;
 333                 /* Disable SA */
 334                 inb_sa->ctl.valid = 0;
 335
 336                 TAILQ_REMOVE(&dev->inb.list, eth_sec, entry);
 337                 dev->inb.nb_sess--;
 338         } else {
 339                 outb_sa = eth_sec->sa;
 340                 /* Disable SA */
 341                 outb_sa->ctl.valid = 0;
 342
 343                 /* Release Outbound SA index */
 344                 cnxk_eth_outb_sa_idx_put(dev, eth_sec->sa_idx);
 345                 TAILQ_REMOVE(&dev->outb.list, eth_sec, entry);
 346                 dev->outb.nb_sess--;
 347         }
 348
 349         /* Sync SA content */
 350         plt_atomic_thread_fence(__ATOMIC_ACQ_REL);
 351
 352         plt_nix_dbg("Destroyed %s session with spi=%u, sa_idx=%u",
 353                     eth_sec->inb ? "inbound" : "outbound", eth_sec->spi,
 354                     eth_sec->sa_idx);
 355
 356         /* Put eth_sec object back to pool */
 357         mp = rte_mempool_from_obj(eth_sec);
 358         set_sec_session_private_data(sess, NULL);
 359         rte_mempool_put(mp, eth_sec);
 360         return 0;
 361 }
 362
 363 static const struct rte_security_capability *
 364 cn9k_eth_sec_capabilities_get(void *device __rte_unused)
 365 {
 366         return cn9k_eth_sec_capabilities;
 367 }
 368
 369 void
 370 cn9k_eth_sec_ops_override(void)
 371 {
 372         static int init_once;
 373
 374         if (init_once)
 375                 return;
 376         init_once = 1;
 377
 378         /* Update platform specific ops */
 379         cnxk_eth_sec_ops.session_create = cn9k_eth_sec_session_create;
 380         cnxk_eth_sec_ops.session_destroy = cn9k_eth_sec_session_destroy;
 381         cnxk_eth_sec_ops.capabilities_get = cn9k_eth_sec_capabilities_get;
 382 }