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
  45 int librte_member_logtype;
  46
  47 TAILQ_HEAD(rte_member_list, rte_tailq_entry);
  48 static struct rte_tailq_elem rte_member_tailq = {
  49         .name = "RTE_MEMBER",
  50 };
  51 EAL_REGISTER_TAILQ(rte_member_tailq)
  52
  53 struct rte_member_setsum *
  54 rte_member_find_existing(const char *name)
  55 {
  56         struct rte_member_setsum *setsum = NULL;
  57         struct rte_tailq_entry *te;
  58         struct rte_member_list *member_list;
  59
  60         member_list = RTE_TAILQ_CAST(rte_member_tailq.head, rte_member_list);
  61
  62         rte_rwlock_read_lock(RTE_EAL_TAILQ_RWLOCK);
  63         TAILQ_FOREACH(te, member_list, next) {
  64                 setsum = (struct rte_member_setsum *) te->data;
  65                 if (strncmp(name, setsum->name, RTE_MEMBER_NAMESIZE) == 0)
  66                         break;
  67         }
  68         rte_rwlock_read_unlock(RTE_EAL_TAILQ_RWLOCK);
  69
  70         if (te == NULL) {
  71                 rte_errno = ENOENT;
  72                 return NULL;
  73         }
  74         return setsum;
  75 }
  76
  77 void
  78 rte_member_free(struct rte_member_setsum *setsum)
  79 {
  80         struct rte_member_list *member_list;
  81         struct rte_tailq_entry *te;
  82
  83         if (setsum == NULL)
  84                 return;
  85         member_list = RTE_TAILQ_CAST(rte_member_tailq.head, rte_member_list);
  86         rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
  87         TAILQ_FOREACH(te, member_list, next) {
  88                 if (te->data == (void *)setsum)
  89                         break;
  90         }
  91         if (te == NULL) {
  92                 rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
  93                 return;
  94         }
  95         TAILQ_REMOVE(member_list, te, next);
  96         rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
  97
  98         switch (setsum->type) {
  99         default:
 100                 break;
 101         }
 102         rte_free(setsum);
 103         rte_free(te);
 104 }
 105
 106 struct rte_member_setsum *
 107 rte_member_create(const struct rte_member_parameters *params)
 108 {
 109         struct rte_tailq_entry *te;
 110         struct rte_member_list *member_list;
 111         struct rte_member_setsum *setsum;
 112         int ret;
 113
 114         if (params == NULL) {
 115                 rte_errno = EINVAL;
 116                 return NULL;
 117         }
 118
 119         if (params->key_len == 0 ||
 120                         params->prim_hash_seed == params->sec_hash_seed) {
 121                 rte_errno = EINVAL;
 122                 RTE_MEMBER_LOG(ERR, "Create setsummary with "
 123                                         "invalid parameters\n");
 124                 return NULL;
 125         }
 126
 127         member_list = RTE_TAILQ_CAST(rte_member_tailq.head, rte_member_list);
 128
 129         rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
 130
 131         TAILQ_FOREACH(te, member_list, next) {
 132                 setsum = (struct rte_member_setsum *) te->data;
 133                 if (strncmp(params->name, setsum->name,
 134                                 RTE_MEMBER_NAMESIZE) == 0)
 135                         break;
 136         }
 137         setsum = NULL;
 138         if (te != NULL) {
 139                 rte_errno = EEXIST;
 140                 te = NULL;
 141                 goto error_unlock_exit;
 142         }
 143         te = rte_zmalloc("MEMBER_TAILQ_ENTRY", sizeof(*te), 0);
 144         if (te == NULL) {
 145                 RTE_MEMBER_LOG(ERR, "tailq entry allocation failed\n");
 146                 goto error_unlock_exit;
 147         }
 148
 149         /* Create a new setsum structure */
 150         setsum = (struct rte_member_setsum *) rte_zmalloc_socket(params->name,
 151                         sizeof(struct rte_member_setsum), RTE_CACHE_LINE_SIZE,
 152                         params->socket_id);
 153         if (setsum == NULL) {
 154                 RTE_MEMBER_LOG(ERR, "Create setsummary failed\n");
 155                 goto error_unlock_exit;
 156         }
 157         snprintf(setsum->name, sizeof(setsum->name), "%s", params->name);
 158         setsum->type = params->type;
 159         setsum->socket_id = params->socket_id;
 160         setsum->key_len = params->key_len;
 161         setsum->num_set = params->num_set;
 162         setsum->prim_hash_seed = params->prim_hash_seed;
 163         setsum->sec_hash_seed = params->sec_hash_seed;
 164
 165         switch (setsum->type) {
 166         default:
 167                 goto error_unlock_exit;
 168         }
 169         if (ret < 0)
 170                 goto error_unlock_exit;
 171
 172         RTE_MEMBER_LOG(DEBUG, "Creating a setsummary table with "
 173                         "mode %u\n", setsum->type);
 174
 175         te->data = (void *)setsum;
 176         TAILQ_INSERT_TAIL(member_list, te, next);
 177         rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
 178         return setsum;
 179
 180 error_unlock_exit:
 181         rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
 182         rte_member_free(setsum);
 183         return NULL;
 184 }
 185
 186 int
 187 rte_member_add(const struct rte_member_setsum *setsum, const void *key,
 188                         member_set_t set_id)
 189 {
 190         if (setsum == NULL || key == NULL)
 191                 return -EINVAL;
 192
 193         (void) set_id;
 194         switch (setsum->type) {
 195         default:
 196                 return -EINVAL;
 197         }
 198 }
 199
 200 int
 201 rte_member_lookup(const struct rte_member_setsum *setsum, const void *key,
 202                         member_set_t *set_id)
 203 {
 204         if (setsum == NULL || key == NULL || set_id == NULL)
 205                 return -EINVAL;
 206
 207         switch (setsum->type) {
 208         default:
 209                 return -EINVAL;
 210         }
 211 }
 212
 213 int
 214 rte_member_lookup_bulk(const struct rte_member_setsum *setsum,
 215                                 const void **keys, uint32_t num_keys,
 216                                 member_set_t *set_ids)
 217 {
 218         if (setsum == NULL || keys == NULL || set_ids == NULL)
 219                 return -EINVAL;
 220
 221         (void) num_keys;
 222         switch (setsum->type) {
 223         default:
 224                 return -EINVAL;
 225         }
 226 }
 227
 228 int
 229 rte_member_lookup_multi(const struct rte_member_setsum *setsum, const void *key,
 230                                 uint32_t match_per_key, member_set_t *set_id)
 231 {
 232         if (setsum == NULL || key == NULL || set_id == NULL)
 233                 return -EINVAL;
 234
 235         (void) match_per_key;
 236         switch (setsum->type) {
 237         default:
 238                 return -EINVAL;
 239         }
 240 }
 241
 242 int
 243 rte_member_lookup_multi_bulk(const struct rte_member_setsum *setsum,
 244                         const void **keys, uint32_t num_keys,
 245                         uint32_t max_match_per_key, uint32_t *match_count,
 246                         member_set_t *set_ids)
 247 {
 248         if (setsum == NULL || keys == NULL || set_ids == NULL ||
 249                         match_count == NULL)
 250                 return -EINVAL;
 251
 252         (void) num_keys;
 253         (void) max_match_per_key;
 254         switch (setsum->type) {
 255         default:
 256                 return -EINVAL;
 257         }
 258 }
 259
 260 int
 261 rte_member_delete(const struct rte_member_setsum *setsum, const void *key,
 262                         member_set_t set_id)
 263 {
 264         if (setsum == NULL || key == NULL)
 265                 return -EINVAL;
 266
 267         (void) set_id;
 268         switch (setsum->type) {
 269         default:
 270                 return -EINVAL;
 271         }
 272 }
 273
 274 void
 275 rte_member_reset(const struct rte_member_setsum *setsum)
 276 {
 277         if (setsum == NULL)
 278                 return;
 279         switch (setsum->type) {
 280         default:
 281                 return;
 282         }
 283 }
 284
 285 RTE_INIT(librte_member_init_log);
 286
 287 static void
 288 librte_member_init_log(void)
 289 {
 290         librte_member_logtype = rte_log_register("librte.member");
 291         if (librte_member_logtype >= 0)
 292                 rte_log_set_level(librte_member_logtype, RTE_LOG_DEBUG);
 293 }