lib/librte_member/rte_member.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2017 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <string.h>
  35
  36 #include <rte_eal.h>
  37 #include <rte_eal_memconfig.h>
  38 #include <rte_memory.h>
  39 #include <rte_memzone.h>
  40 #include <rte_malloc.h>
  41 #include <rte_errno.h>
  42
  43 #include "rte_member.h"
  44 #include "rte_member_ht.h"
  45
  46 int librte_member_logtype;
  47
  48 TAILQ_HEAD(rte_member_list, rte_tailq_entry);
  49 static struct rte_tailq_elem rte_member_tailq = {
  50         .name = "RTE_MEMBER",
  51 };
  52 EAL_REGISTER_TAILQ(rte_member_tailq)
  53
  54 struct rte_member_setsum *
  55 rte_member_find_existing(const char *name)
  56 {
  57         struct rte_member_setsum *setsum = NULL;
  58         struct rte_tailq_entry *te;
  59         struct rte_member_list *member_list;
  60
  61         member_list = RTE_TAILQ_CAST(rte_member_tailq.head, rte_member_list);
  62
  63         rte_rwlock_read_lock(RTE_EAL_TAILQ_RWLOCK);
  64         TAILQ_FOREACH(te, member_list, next) {
  65                 setsum = (struct rte_member_setsum *) te->data;
  66                 if (strncmp(name, setsum->name, RTE_MEMBER_NAMESIZE) == 0)
  67                         break;
  68         }
  69         rte_rwlock_read_unlock(RTE_EAL_TAILQ_RWLOCK);
  70
  71         if (te == NULL) {
  72                 rte_errno = ENOENT;
  73                 return NULL;
  74         }
  75         return setsum;
  76 }
  77
  78 void
  79 rte_member_free(struct rte_member_setsum *setsum)
  80 {
  81         struct rte_member_list *member_list;
  82         struct rte_tailq_entry *te;
  83
  84         if (setsum == NULL)
  85                 return;
  86         member_list = RTE_TAILQ_CAST(rte_member_tailq.head, rte_member_list);
  87         rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
  88         TAILQ_FOREACH(te, member_list, next) {
  89                 if (te->data == (void *)setsum)
  90                         break;
  91         }
  92         if (te == NULL) {
  93                 rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
  94                 return;
  95         }
  96         TAILQ_REMOVE(member_list, te, next);
  97         rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
  98
  99         switch (setsum->type) {
 100         case RTE_MEMBER_TYPE_HT:
 101                 rte_member_free_ht(setsum);
 102                 break;
 103         default:
 104                 break;
 105         }
 106         rte_free(setsum);
 107         rte_free(te);
 108 }
 109
 110 struct rte_member_setsum *
 111 rte_member_create(const struct rte_member_parameters *params)
 112 {
 113         struct rte_tailq_entry *te;
 114         struct rte_member_list *member_list;
 115         struct rte_member_setsum *setsum;
 116         int ret;
 117
 118         if (params == NULL) {
 119                 rte_errno = EINVAL;
 120                 return NULL;
 121         }
 122
 123         if (params->key_len == 0 ||
 124                         params->prim_hash_seed == params->sec_hash_seed) {
 125                 rte_errno = EINVAL;
 126                 RTE_MEMBER_LOG(ERR, "Create setsummary with "
 127                                         "invalid parameters\n");
 128                 return NULL;
 129         }
 130
 131         member_list = RTE_TAILQ_CAST(rte_member_tailq.head, rte_member_list);
 132
 133         rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
 134
 135         TAILQ_FOREACH(te, member_list, next) {
 136                 setsum = (struct rte_member_setsum *) te->data;
 137                 if (strncmp(params->name, setsum->name,
 138                                 RTE_MEMBER_NAMESIZE) == 0)
 139                         break;
 140         }
 141         setsum = NULL;
 142         if (te != NULL) {
 143                 rte_errno = EEXIST;
 144                 te = NULL;
 145                 goto error_unlock_exit;
 146         }
 147         te = rte_zmalloc("MEMBER_TAILQ_ENTRY", sizeof(*te), 0);
 148         if (te == NULL) {
 149                 RTE_MEMBER_LOG(ERR, "tailq entry allocation failed\n");
 150                 goto error_unlock_exit;
 151         }
 152
 153         /* Create a new setsum structure */
 154         setsum = (struct rte_member_setsum *) rte_zmalloc_socket(params->name,
 155                         sizeof(struct rte_member_setsum), RTE_CACHE_LINE_SIZE,
 156                         params->socket_id);
 157         if (setsum == NULL) {
 158                 RTE_MEMBER_LOG(ERR, "Create setsummary failed\n");
 159                 goto error_unlock_exit;
 160         }
 161         snprintf(setsum->name, sizeof(setsum->name), "%s", params->name);
 162         setsum->type = params->type;
 163         setsum->socket_id = params->socket_id;
 164         setsum->key_len = params->key_len;
 165         setsum->num_set = params->num_set;
 166         setsum->prim_hash_seed = params->prim_hash_seed;
 167         setsum->sec_hash_seed = params->sec_hash_seed;
 168
 169         switch (setsum->type) {
 170         case RTE_MEMBER_TYPE_HT:
 171                 ret = rte_member_create_ht(setsum, params);
 172                 break;
 173         default:
 174                 goto error_unlock_exit;
 175         }
 176         if (ret < 0)
 177                 goto error_unlock_exit;
 178
 179         RTE_MEMBER_LOG(DEBUG, "Creating a setsummary table with "
 180                         "mode %u\n", setsum->type);
 181
 182         te->data = (void *)setsum;
 183         TAILQ_INSERT_TAIL(member_list, te, next);
 184         rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
 185         return setsum;
 186
 187 error_unlock_exit:
 188         rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
 189         rte_member_free(setsum);
 190         return NULL;
 191 }
 192
 193 int
 194 rte_member_add(const struct rte_member_setsum *setsum, const void *key,
 195                         member_set_t set_id)
 196 {
 197         if (setsum == NULL || key == NULL)
 198                 return -EINVAL;
 199
 200         switch (setsum->type) {
 201         case RTE_MEMBER_TYPE_HT:
 202                 return rte_member_add_ht(setsum, key, set_id);
 203         default:
 204                 return -EINVAL;
 205         }
 206 }
 207
 208 int
 209 rte_member_lookup(const struct rte_member_setsum *setsum, const void *key,
 210                         member_set_t *set_id)
 211 {
 212         if (setsum == NULL || key == NULL || set_id == NULL)
 213                 return -EINVAL;
 214
 215         switch (setsum->type) {
 216         case RTE_MEMBER_TYPE_HT:
 217                 return rte_member_lookup_ht(setsum, key, set_id);
 218         default:
 219                 return -EINVAL;
 220         }
 221 }
 222
 223 int
 224 rte_member_lookup_bulk(const struct rte_member_setsum *setsum,
 225                                 const void **keys, uint32_t num_keys,
 226                                 member_set_t *set_ids)
 227 {
 228         if (setsum == NULL || keys == NULL || set_ids == NULL)
 229                 return -EINVAL;
 230
 231         switch (setsum->type) {
 232         case RTE_MEMBER_TYPE_HT:
 233                 return rte_member_lookup_bulk_ht(setsum, keys, num_keys,
 234                                 set_ids);
 235         default:
 236                 return -EINVAL;
 237         }
 238 }
 239
 240 int
 241 rte_member_lookup_multi(const struct rte_member_setsum *setsum, const void *key,
 242                                 uint32_t match_per_key, member_set_t *set_id)
 243 {
 244         if (setsum == NULL || key == NULL || set_id == NULL)
 245                 return -EINVAL;
 246
 247         switch (setsum->type) {
 248         case RTE_MEMBER_TYPE_HT:
 249                 return rte_member_lookup_multi_ht(setsum, key, match_per_key,
 250                                 set_id);
 251         default:
 252                 return -EINVAL;
 253         }
 254 }
 255
 256 int
 257 rte_member_lookup_multi_bulk(const struct rte_member_setsum *setsum,
 258                         const void **keys, uint32_t num_keys,
 259                         uint32_t max_match_per_key, uint32_t *match_count,
 260                         member_set_t *set_ids)
 261 {
 262         if (setsum == NULL || keys == NULL || set_ids == NULL ||
 263                         match_count == NULL)
 264                 return -EINVAL;
 265
 266         switch (setsum->type) {
 267         case RTE_MEMBER_TYPE_HT:
 268                 return rte_member_lookup_multi_bulk_ht(setsum, keys, num_keys,
 269                                 max_match_per_key, match_count, set_ids);
 270         default:
 271                 return -EINVAL;
 272         }
 273 }
 274
 275 int
 276 rte_member_delete(const struct rte_member_setsum *setsum, const void *key,
 277                         member_set_t set_id)
 278 {
 279         if (setsum == NULL || key == NULL)
 280                 return -EINVAL;
 281
 282         switch (setsum->type) {
 283         case RTE_MEMBER_TYPE_HT:
 284                 return rte_member_delete_ht(setsum, key, set_id);
 285         default:
 286                 return -EINVAL;
 287         }
 288 }
 289
 290 void
 291 rte_member_reset(const struct rte_member_setsum *setsum)
 292 {
 293         if (setsum == NULL)
 294                 return;
 295         switch (setsum->type) {
 296         case RTE_MEMBER_TYPE_HT:
 297                 rte_member_reset_ht(setsum);
 298                 return;
 299         default:
 300                 return;
 301         }
 302 }
 303
 304 RTE_INIT(librte_member_init_log);
 305
 306 static void
 307 librte_member_init_log(void)
 308 {
 309         librte_member_logtype = rte_log_register("librte.member");
 310         if (librte_member_logtype >= 0)
 311                 rte_log_set_level(librte_member_logtype, RTE_LOG_DEBUG);
 312 }