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 #include "eal_private.h" 13 14 static struct rte_class_list rte_class_list = 15 TAILQ_HEAD_INITIALIZER(rte_class_list); 16 17 void 18 rte_class_register(struct rte_class *class) 19 { 20 RTE_VERIFY(class); 21 RTE_VERIFY(class->name && strlen(class->name)); 22 23 TAILQ_INSERT_TAIL(&rte_class_list, class, next); 24 EAL_LOG(DEBUG, "Registered [%s] device class.", class->name); 25 } 26 27 void 28 rte_class_unregister(struct rte_class *class) 29 { 30 TAILQ_REMOVE(&rte_class_list, class, next); 31 EAL_LOG(DEBUG, "Unregistered [%s] device class.", class->name); 32 } 33 34 struct rte_class * 35 rte_class_find(const struct rte_class *start, rte_class_cmp_t cmp, 36 const void *data) 37 { 38 struct rte_class *cls; 39 40 if (start != NULL) 41 cls = TAILQ_NEXT(start, next); 42 else 43 cls = TAILQ_FIRST(&rte_class_list); 44 while (cls != NULL) { 45 if (cmp(cls, data) == 0) 46 break; 47 cls = TAILQ_NEXT(cls, next); 48 } 49 return cls; 50 } 51 52 static int 53 cmp_class_name(const struct rte_class *class, const void *_name) 54 { 55 const char *name = _name; 56 57 return strcmp(class->name, name); 58 } 59 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 } 65