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 = 1, 31 .max = 20, 32 .increment = 1 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 = 1, 52 .max = 32, 53 .increment = 1 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 /* No limit of number of sessions */ 158 dev_info->sym.max_nb_sessions = 0; 159 } 160 } 161 162 /** Release queue pair */ 163 static int 164 armv8_crypto_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id) 165 { 166 167 if (dev->data->queue_pairs[qp_id] != NULL) { 168 rte_free(dev->data->queue_pairs[qp_id]); 169 dev->data->queue_pairs[qp_id] = NULL; 170 } 171 172 return 0; 173 } 174 175 /** set a unique name for the queue pair based on it's name, dev_id and qp_id */ 176 static int 177 armv8_crypto_pmd_qp_set_unique_name(struct rte_cryptodev *dev, 178 struct armv8_crypto_qp *qp) 179 { 180 unsigned int n; 181 182 n = snprintf(qp->name, sizeof(qp->name), "armv8_crypto_pmd_%u_qp_%u", 183 dev->data->dev_id, qp->id); 184 185 if (n >= sizeof(qp->name)) 186 return -1; 187 188 return 0; 189 } 190 191 192 /** Create a ring to place processed operations on */ 193 static struct rte_ring * 194 armv8_crypto_pmd_qp_create_processed_ops_ring(struct armv8_crypto_qp *qp, 195 unsigned int ring_size, int socket_id) 196 { 197 struct rte_ring *r; 198 199 r = rte_ring_lookup(qp->name); 200 if (r) { 201 if (rte_ring_get_size(r) >= ring_size) { 202 ARMV8_CRYPTO_LOG_INFO( 203 "Reusing existing ring %s for processed ops", 204 qp->name); 205 return r; 206 } 207 208 ARMV8_CRYPTO_LOG_ERR( 209 "Unable to reuse existing ring %s for processed ops", 210 qp->name); 211 return NULL; 212 } 213 214 return rte_ring_create(qp->name, ring_size, socket_id, 215 RING_F_SP_ENQ | RING_F_SC_DEQ); 216 } 217 218 219 /** Setup a queue pair */ 220 static int 221 armv8_crypto_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id, 222 const struct rte_cryptodev_qp_conf *qp_conf, 223 int socket_id, struct rte_mempool *session_pool) 224 { 225 struct armv8_crypto_qp *qp = NULL; 226 227 /* Free memory prior to re-allocation if needed. */ 228 if (dev->data->queue_pairs[qp_id] != NULL) 229 armv8_crypto_pmd_qp_release(dev, qp_id); 230 231 /* Allocate the queue pair data structure. */ 232 qp = rte_zmalloc_socket("ARMv8 PMD Queue Pair", sizeof(*qp), 233 RTE_CACHE_LINE_SIZE, socket_id); 234 if (qp == NULL) 235 return -ENOMEM; 236 237 qp->id = qp_id; 238 dev->data->queue_pairs[qp_id] = qp; 239 240 if (armv8_crypto_pmd_qp_set_unique_name(dev, qp) != 0) 241 goto qp_setup_cleanup; 242 243 qp->processed_ops = armv8_crypto_pmd_qp_create_processed_ops_ring(qp, 244 qp_conf->nb_descriptors, socket_id); 245 if (qp->processed_ops == NULL) 246 goto qp_setup_cleanup; 247 248 qp->sess_mp = session_pool; 249 250 memset(&qp->stats, 0, sizeof(qp->stats)); 251 252 return 0; 253 254 qp_setup_cleanup: 255 if (qp) 256 rte_free(qp); 257 258 return -1; 259 } 260 261 /** Return the number of allocated queue pairs */ 262 static uint32_t 263 armv8_crypto_pmd_qp_count(struct rte_cryptodev *dev) 264 { 265 return dev->data->nb_queue_pairs; 266 } 267 268 /** Returns the size of the session structure */ 269 static unsigned 270 armv8_crypto_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused) 271 { 272 return sizeof(struct armv8_crypto_session); 273 } 274 275 /** Configure the session from a crypto xform chain */ 276 static int 277 armv8_crypto_pmd_session_configure(struct rte_cryptodev *dev, 278 struct rte_crypto_sym_xform *xform, 279 struct rte_cryptodev_sym_session *sess, 280 struct rte_mempool *mempool) 281 { 282 void *sess_private_data; 283 int ret; 284 285 if (unlikely(sess == NULL)) { 286 ARMV8_CRYPTO_LOG_ERR("invalid session struct"); 287 return -EINVAL; 288 } 289 290 if (rte_mempool_get(mempool, &sess_private_data)) { 291 CDEV_LOG_ERR( 292 "Couldn't get object from session mempool"); 293 return -ENOMEM; 294 } 295 296 ret = armv8_crypto_set_session_parameters(sess_private_data, xform); 297 if (ret != 0) { 298 ARMV8_CRYPTO_LOG_ERR("failed configure session parameters"); 299 300 /* Return session to mempool */ 301 rte_mempool_put(mempool, sess_private_data); 302 return ret; 303 } 304 305 set_session_private_data(sess, dev->driver_id, 306 sess_private_data); 307 308 return 0; 309 } 310 311 /** Clear the memory of session so it doesn't leave key material behind */ 312 static void 313 armv8_crypto_pmd_session_clear(struct rte_cryptodev *dev, 314 struct rte_cryptodev_sym_session *sess) 315 { 316 uint8_t index = dev->driver_id; 317 void *sess_priv = get_session_private_data(sess, index); 318 319 /* Zero out the whole structure */ 320 if (sess_priv) { 321 memset(sess_priv, 0, sizeof(struct armv8_crypto_session)); 322 struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv); 323 set_session_private_data(sess, index, NULL); 324 rte_mempool_put(sess_mp, sess_priv); 325 } 326 } 327 328 struct rte_cryptodev_ops armv8_crypto_pmd_ops = { 329 .dev_configure = armv8_crypto_pmd_config, 330 .dev_start = armv8_crypto_pmd_start, 331 .dev_stop = armv8_crypto_pmd_stop, 332 .dev_close = armv8_crypto_pmd_close, 333 334 .stats_get = armv8_crypto_pmd_stats_get, 335 .stats_reset = armv8_crypto_pmd_stats_reset, 336 337 .dev_infos_get = armv8_crypto_pmd_info_get, 338 339 .queue_pair_setup = armv8_crypto_pmd_qp_setup, 340 .queue_pair_release = armv8_crypto_pmd_qp_release, 341 .queue_pair_count = armv8_crypto_pmd_qp_count, 342 343 .session_get_size = armv8_crypto_pmd_session_get_size, 344 .session_configure = armv8_crypto_pmd_session_configure, 345 .session_clear = armv8_crypto_pmd_session_clear 346 }; 347 348 struct rte_cryptodev_ops *rte_armv8_crypto_pmd_ops = &armv8_crypto_pmd_ops; 349