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 int ret;
30 const struct rte_kvargs *kvlist = _kvlist;
31 char *name;
32
33 /* cannot pass const dev->name to rte_kvargs_process() */
34 name = strdup(dev->name);
35 if (name == NULL)
36 return -1;
37 ret = rte_kvargs_process(kvlist,
38 vdev_params_keys[RTE_VDEV_PARAM_NAME],
39 rte_kvargs_strcmp, name);
40 free(name);
41 if (ret != 0)
42 return -1;
43
44 return 0;
45 }
46
47 void *
rte_vdev_dev_iterate(const void * start,const char * str,const struct rte_dev_iterator * it __rte_unused)48 rte_vdev_dev_iterate(const void *start,
49 const char *str,
50 const struct rte_dev_iterator *it __rte_unused)
51 {
52 struct rte_kvargs *kvargs = NULL;
53 struct rte_device *dev;
54
55 if (str != NULL) {
56 kvargs = rte_kvargs_parse(str, vdev_params_keys);
57 if (kvargs == NULL) {
58 VDEV_LOG(ERR, "cannot parse argument list\n");
59 rte_errno = EINVAL;
60 return NULL;
61 }
62 }
63 dev = rte_vdev_find_device(start, vdev_dev_match, kvargs);
64 rte_kvargs_free(kvargs);
65 return dev;
66 }
67