1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2017 Cavium, Inc 3 */ 4 5 #include <string.h> 6 7 #include <rte_common.h> 8 #include <rte_malloc.h> 9 #include <rte_cryptodev_pmd.h> 10 11 #include "armv8_crypto_defs.h" 12 13 #include "rte_armv8_pmd_private.h" 14 15 static const struct rte_cryptodev_capabilities 16 armv8_crypto_pmd_capabilities[] = { 17 { /* SHA1 HMAC */ 18 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC, 19 {.sym = { 20 .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH, 21 {.auth = { 22 .algo = RTE_CRYPTO_AUTH_SHA1_HMAC, 23 .block_size = 64, 24 .key_size = { 25 .min = 1, 26 .max = 64, 27 .increment = 1 28 }, 29 .digest_size = { 30 .min = 20, 31 .max = 20, 32 .increment = 0 33 }, 34 .iv_size = { 0 } 35 }, } 36 }, } 37 }, 38 { /* SHA256 HMAC */ 39 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC, 40 {.sym = { 41 .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH, 42 {.auth = { 43 .algo = RTE_CRYPTO_AUTH_SHA256_HMAC, 44 .block_size = 64, 45 .key_size = { 46 .min = 1, 47 .max = 64, 48 .increment = 1 49 }, 50 .digest_size = { 51 .min = 32, 52 .max = 32, 53 .increment = 0 54 }, 55 .iv_size = { 0 } 56 }, } 57 }, } 58 }, 59 { /* AES CBC */ 60 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC, 61 {.sym = { 62 .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER, 63 {.cipher = { 64 .algo = RTE_CRYPTO_CIPHER_AES_CBC, 65 .block_size = 16, 66 .key_size = { 67 .min = 16, 68 .max = 16, 69 .increment = 0 70 }, 71 .iv_size = { 72 .min = 16, 73 .max = 16, 74 .increment = 0 75 } 76 }, } 77 }, } 78 }, 79 80 RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST() 81 }; 82 83 84 /** Configure device */ 85 static int 86 armv8_crypto_pmd_config(__rte_unused struct rte_cryptodev *dev, 87 __rte_unused struct rte_cryptodev_config *config) 88 { 89 return 0; 90 } 91 92 /** Start device */ 93 static int 94 armv8_crypto_pmd_start(__rte_unused struct rte_cryptodev *dev) 95 { 96 return 0; 97 } 98 99 /** Stop device */ 100 static void 101 armv8_crypto_pmd_stop(__rte_unused struct rte_cryptodev *dev) 102 { 103 } 104 105 /** Close device */ 106 static int 107 armv8_crypto_pmd_close(__rte_unused struct rte_cryptodev *dev) 108 { 109 return 0; 110 } 111 112 113 /** Get device statistics */ 114 static void 115 armv8_crypto_pmd_stats_get(struct rte_cryptodev *dev, 116 struct rte_cryptodev_stats *stats) 117 { 118 int qp_id; 119 120 for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) { 121 struct armv8_crypto_qp *qp = dev->data->queue_pairs[qp_id]; 122 123 stats->enqueued_count += qp->stats.enqueued_count; 124 stats->dequeued_count += qp->stats.dequeued_count; 125 126 stats->enqueue_err_count += qp->stats.enqueue_err_count; 127 stats->dequeue_err_count += qp->stats.dequeue_err_count; 128 } 129 } 130 131 /** Reset device statistics */ 132 static void 133 armv8_crypto_pmd_stats_reset(struct rte_cryptodev *dev) 134 { 135 int qp_id; 136 137 for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) { 138 struct armv8_crypto_qp *qp = dev->data->queue_pairs[qp_id]; 139 140 memset(&qp->stats, 0, sizeof(qp->stats)); 141 } 142 } 143 144 145 /** Get device info */ 146 static void 147 armv8_crypto_pmd_info_get(struct rte_cryptodev *dev, 148 struct rte_cryptodev_info *dev_info) 149 { 150 struct armv8_crypto_private *internals = dev->data->dev_private; 151 152 if (dev_info != NULL) { 153 dev_info->driver_id = dev->driver_id; 154 dev_info->feature_flags = dev->feature_flags; 155 dev_info->capabilities = armv8_crypto_pmd_capabilities; 156 dev_info->max_nb_queue_pairs = internals->max_nb_qpairs; 157 dev_info->sym.max_nb_sessions = internals->max_nb_sessions; 158 } 159 } 160 161 /** Release queue pair */ 162 static int 163 armv8_crypto_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id) 164 { 165 166 if (dev->data->queue_pairs[qp_id] != NULL) { 167 rte_free(dev->data->queue_pairs[qp_id]); 168 dev->data->queue_pairs[qp_id] = NULL; 169 } 170 171 return 0; 172 } 173 174 /** set a unique name for the queue pair based on it's name, dev_id and qp_id */ 175 static int 176 armv8_crypto_pmd_qp_set_unique_name(struct rte_cryptodev *dev, 177 struct armv8_crypto_qp *qp) 178 { 179 unsigned int n; 180 181 n = snprintf(qp->name, sizeof(qp->name), "armv8_crypto_pmd_%u_qp_%u", 182 dev->data->dev_id, qp->id); 183 184 if (n >= sizeof(qp->name)) 185 return -1; 186 187 return 0; 188 } 189 190 191 /** Create a ring to place processed operations on */ 192 static struct rte_ring * 193 armv8_crypto_pmd_qp_create_processed_ops_ring(struct armv8_crypto_qp *qp, 194 unsigned int ring_size, int socket_id) 195 { 196 struct rte_ring *r; 197 198 r = rte_ring_lookup(qp->name); 199 if (r) { 200 if (rte_ring_get_size(r) >= ring_size) { 201 ARMV8_CRYPTO_LOG_INFO( 202 "Reusing existing ring %s for processed ops", 203 qp->name); 204 return r; 205 } 206 207 ARMV8_CRYPTO_LOG_ERR( 208 "Unable to reuse existing ring %s for processed ops", 209 qp->name); 210 return NULL; 211 } 212 213 return rte_ring_create(qp->name, ring_size, socket_id, 214 RING_F_SP_ENQ | RING_F_SC_DEQ); 215 } 216 217 218 /** Setup a queue pair */ 219 static int 220 armv8_crypto_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id, 221 const struct rte_cryptodev_qp_conf *qp_conf, 222 int socket_id, struct rte_mempool *session_pool) 223 { 224 struct armv8_crypto_qp *qp = NULL; 225 226 /* Free memory prior to re-allocation if needed. */ 227 if (dev->data->queue_pairs[qp_id] != NULL) 228 armv8_crypto_pmd_qp_release(dev, qp_id); 229 230 /* Allocate the queue pair data structure. */ 231 qp = rte_zmalloc_socket("ARMv8 PMD Queue Pair", sizeof(*qp), 232 RTE_CACHE_LINE_SIZE, socket_id); 233 if (qp == NULL) 234 return -ENOMEM; 235 236 qp->id = qp_id; 237 dev->data->queue_pairs[qp_id] = qp; 238 239 if (armv8_crypto_pmd_qp_set_unique_name(dev, qp) != 0) 240 goto qp_setup_cleanup; 241 242 qp->processed_ops = armv8_crypto_pmd_qp_create_processed_ops_ring(qp, 243 qp_conf->nb_descriptors, socket_id); 244 if (qp->processed_ops == NULL) 245 goto qp_setup_cleanup; 246 247 qp->sess_mp = session_pool; 248 249 memset(&qp->stats, 0, sizeof(qp->stats)); 250 251 return 0; 252 253 qp_setup_cleanup: 254 if (qp) 255 rte_free(qp); 256 257 return -1; 258 } 259 260 /** Start queue pair */ 261 static int 262 armv8_crypto_pmd_qp_start(__rte_unused struct rte_cryptodev *dev, 263 __rte_unused uint16_t queue_pair_id) 264 { 265 return -ENOTSUP; 266 } 267 268 /** Stop queue pair */ 269 static int 270 armv8_crypto_pmd_qp_stop(__rte_unused struct rte_cryptodev *dev, 271 __rte_unused uint16_t queue_pair_id) 272 { 273 return -ENOTSUP; 274 } 275 276 /** Return the number of allocated queue pairs */ 277 static uint32_t 278 armv8_crypto_pmd_qp_count(struct rte_cryptodev *dev) 279 { 280 return dev->data->nb_queue_pairs; 281 } 282 283 /** Returns the size of the session structure */ 284 static unsigned 285 armv8_crypto_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused) 286 { 287 return sizeof(struct armv8_crypto_session); 288 } 289 290 /** Configure the session from a crypto xform chain */ 291 static int 292 armv8_crypto_pmd_session_configure(struct rte_cryptodev *dev, 293 struct rte_crypto_sym_xform *xform, 294 struct rte_cryptodev_sym_session *sess, 295 struct rte_mempool *mempool) 296 { 297 void *sess_private_data; 298 int ret; 299 300 if (unlikely(sess == NULL)) { 301 ARMV8_CRYPTO_LOG_ERR("invalid session struct"); 302 return -EINVAL; 303 } 304 305 if (rte_mempool_get(mempool, &sess_private_data)) { 306 CDEV_LOG_ERR( 307 "Couldn't get object from session mempool"); 308 return -ENOMEM; 309 } 310 311 ret = armv8_crypto_set_session_parameters(sess_private_data, xform); 312 if (ret != 0) { 313 ARMV8_CRYPTO_LOG_ERR("failed configure session parameters"); 314 315 /* Return session to mempool */ 316 rte_mempool_put(mempool, sess_private_data); 317 return ret; 318 } 319 320 set_session_private_data(sess, dev->driver_id, 321 sess_private_data); 322 323 return 0; 324 } 325 326 /** Clear the memory of session so it doesn't leave key material behind */ 327 static void 328 armv8_crypto_pmd_session_clear(struct rte_cryptodev *dev, 329 struct rte_cryptodev_sym_session *sess) 330 { 331 uint8_t index = dev->driver_id; 332 void *sess_priv = get_session_private_data(sess, index); 333 334 /* Zero out the whole structure */ 335 if (sess_priv) { 336 memset(sess_priv, 0, sizeof(struct armv8_crypto_session)); 337 struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv); 338 set_session_private_data(sess, index, NULL); 339 rte_mempool_put(sess_mp, sess_priv); 340 } 341 } 342 343 struct rte_cryptodev_ops armv8_crypto_pmd_ops = { 344 .dev_configure = armv8_crypto_pmd_config, 345 .dev_start = armv8_crypto_pmd_start, 346 .dev_stop = armv8_crypto_pmd_stop, 347 .dev_close = armv8_crypto_pmd_close, 348 349 .stats_get = armv8_crypto_pmd_stats_get, 350 .stats_reset = armv8_crypto_pmd_stats_reset, 351 352 .dev_infos_get = armv8_crypto_pmd_info_get, 353 354 .queue_pair_setup = armv8_crypto_pmd_qp_setup, 355 .queue_pair_release = armv8_crypto_pmd_qp_release, 356 .queue_pair_start = armv8_crypto_pmd_qp_start, 357 .queue_pair_stop = armv8_crypto_pmd_qp_stop, 358 .queue_pair_count = armv8_crypto_pmd_qp_count, 359 360 .session_get_size = armv8_crypto_pmd_session_get_size, 361 .session_configure = armv8_crypto_pmd_session_configure, 362 .session_clear = armv8_crypto_pmd_session_clear 363 }; 364 365 struct rte_cryptodev_ops *rte_armv8_crypto_pmd_ops = &armv8_crypto_pmd_ops; 366