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 static struct rte_class_list rte_class_list =
13 TAILQ_HEAD_INITIALIZER(rte_class_list);
14
15 void
rte_class_register(struct rte_class * class)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 void
rte_class_unregister(struct rte_class * class)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 struct rte_class *
rte_class_find(const struct rte_class * start,rte_class_cmp_t cmp,const void * data)33 rte_class_find(const struct rte_class *start, rte_class_cmp_t cmp,
34 const void *data)
35 {
36 struct rte_class *cls;
37
38 if (start != NULL)
39 cls = TAILQ_NEXT(start, next);
40 else
41 cls = TAILQ_FIRST(&rte_class_list);
42 while (cls != NULL) {
43 if (cmp(cls, data) == 0)
44 break;
45 cls = TAILQ_NEXT(cls, next);
46 }
47 return cls;
48 }
49
50 static int
cmp_class_name(const struct rte_class * class,const void * _name)51 cmp_class_name(const struct rte_class *class, const void *_name)
52 {
53 const char *name = _name;
54
55 return strcmp(class->name, name);
56 }
57
58 struct rte_class *
rte_class_find_by_name(const char * name)59 rte_class_find_by_name(const char *name)
60 {
61 return rte_class_find(NULL, cmp_class_name, (const void *)name);
62 }
63