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 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 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 * 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 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 * 59 rte_class_find_by_name(const char *name) 60 { 61 return rte_class_find(NULL, cmp_class_name, (const void *)name); 62 } 63