1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2018 Gaëtan Rivet
3 */
4
5 #include <string.h>
6
7 #include <rte_dev.h>
8 #include <rte_bus.h>
9 #include <rte_kvargs.h>
10 #include <rte_errno.h>
11
12 #include "vdev_logs.h"
13 #include "vdev_private.h"
14
15 enum vdev_params {
16 RTE_VDEV_PARAM_NAME,
17 RTE_VDEV_PARAM_MAX,
18 };
19
20 static const char * const vdev_params_keys[] = {
21 [RTE_VDEV_PARAM_NAME] = "name",
22 [RTE_VDEV_PARAM_MAX] = NULL,
23 };
24
25 static int
vdev_dev_match(const struct rte_device * dev,const void * _kvlist)26 vdev_dev_match(const struct rte_device *dev,
27 const void *_kvlist)
28 {
29 const struct rte_kvargs *kvlist = _kvlist;
30 const char *key = vdev_params_keys[RTE_VDEV_PARAM_NAME];
31 const char *name;
32
33 /* no kvlist arg, all devices match */
34 if (kvlist == NULL)
35 return 0;
36
37 /* if key is present in kvlist and does not match, filter device */
38 name = rte_kvargs_get(kvlist, key);
39 if (name != NULL && strcmp(name, dev->name))
40 return -1;
41
42 return 0;
43 }
44
45 void *
rte_vdev_dev_iterate(const void * start,const char * str,const struct rte_dev_iterator * it __rte_unused)46 rte_vdev_dev_iterate(const void *start,
47 const char *str,
48 const struct rte_dev_iterator *it __rte_unused)
49 {
50 struct rte_kvargs *kvargs = NULL;
51 struct rte_device *dev;
52
53 if (str != NULL) {
54 kvargs = rte_kvargs_parse(str, vdev_params_keys);
55 if (kvargs == NULL) {
56 VDEV_LOG(ERR, "cannot parse argument list\n");
57 rte_errno = EINVAL;
58 return NULL;
59 }
60 }
61 dev = rte_vdev_find_device(start, vdev_dev_match, kvargs);
62 rte_kvargs_free(kvargs);
63 return dev;
64 }
65