ceph/src/spdk/dpdk/lib/librte_eal/common/eal_common_class.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2018 Gaëtan Rivet
   3  */
   4
   5 #include <stdio.h>
   6 #include <string.h>
   7 #include <sys/queue.h>
   8
   9 #include <rte_class.h>
  10 #include <rte_debug.h>
  11
  12 struct rte_class_list rte_class_list =
  13         TAILQ_HEAD_INITIALIZER(rte_class_list);
  14
  15 __rte_experimental void
  16 rte_class_register(struct rte_class *class)
  17 {
  18         RTE_VERIFY(class);
  19         RTE_VERIFY(class->name && strlen(class->name));
  20
  21         TAILQ_INSERT_TAIL(&rte_class_list, class, next);
  22         RTE_LOG(DEBUG, EAL, "Registered [%s] device class.\n", class->name);
  23 }
  24
  25 __rte_experimental void
  26 rte_class_unregister(struct rte_class *class)
  27 {
  28         TAILQ_REMOVE(&rte_class_list, class, next);
  29         RTE_LOG(DEBUG, EAL, "Unregistered [%s] device class.\n", class->name);
  30 }
  31
  32 __rte_experimental
  33 struct rte_class *
  34 rte_class_find(const struct rte_class *start, rte_class_cmp_t cmp,
  35                const void *data)
  36 {
  37         struct rte_class *cls;
  38
  39         if (start != NULL)
  40                 cls = TAILQ_NEXT(start, next);
  41         else
  42                 cls = TAILQ_FIRST(&rte_class_list);
  43         while (cls != NULL) {
  44                 if (cmp(cls, data) == 0)
  45                         break;
  46                 cls = TAILQ_NEXT(cls, next);
  47         }
  48         return cls;
  49 }
  50
  51 static int
  52 cmp_class_name(const struct rte_class *class, const void *_name)
  53 {
  54         const char *name = _name;
  55
  56         return strcmp(class->name, name);
  57 }
  58
  59 __rte_experimental
  60 struct rte_class *
  61 rte_class_find_by_name(const char *name)
  62 {
  63         return rte_class_find(NULL, cmp_class_name, (const void *)name);
  64 }