New upstream version 18.11-rc1

[deb_dpdk.git] / drivers / bus / vdev / vdev_params.c

diff --git a/drivers/bus/vdev/vdev_params.c b/drivers/bus/vdev/vdev_params.c
new file mode 100644 (file)
index 0000000..6f74704
--- /dev/null
+++ b/drivers/bus/vdev/vdev_params.c
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2018 Gaëtan Rivet
+ */
+
+#include <string.h>
+
+#include <rte_dev.h>
+#include <rte_bus.h>
+#include <rte_kvargs.h>
+#include <rte_errno.h>
+
+#include "vdev_logs.h"
+#include "vdev_private.h"
+
+enum vdev_params {
+       RTE_VDEV_PARAM_NAME,
+       RTE_VDEV_PARAM_MAX,
+};
+
+static const char * const vdev_params_keys[] = {
+       [RTE_VDEV_PARAM_NAME] = "name",
+       [RTE_VDEV_PARAM_MAX] = NULL,
+};
+
+static int
+vdev_dev_match(const struct rte_device *dev,
+              const void *_kvlist)
+{
+       int ret;
+       const struct rte_kvargs *kvlist = _kvlist;
+       char *name;
+
+       /* cannot pass const dev->name to rte_kvargs_process() */
+       name = strdup(dev->name);
+       if (name == NULL)
+               return -1;
+       ret = rte_kvargs_process(kvlist,
+               vdev_params_keys[RTE_VDEV_PARAM_NAME],
+               rte_kvargs_strcmp, name);
+       free(name);
+       if (ret != 0)
+               return -1;
+
+       return 0;
+}
+
+void *
+rte_vdev_dev_iterate(const void *start,
+                    const char *str,
+                    const struct rte_dev_iterator *it __rte_unused)
+{
+       struct rte_kvargs *kvargs = NULL;
+       struct rte_device *dev;
+
+       if (str != NULL) {
+               kvargs = rte_kvargs_parse(str, vdev_params_keys);
+               if (kvargs == NULL) {
+                       VDEV_LOG(ERR, "cannot parse argument list\n");
+                       rte_errno = EINVAL;
+                       return NULL;
+               }
+       }
+       dev = rte_vdev_find_device(start, vdev_dev_match, kvargs);
+       rte_kvargs_free(kvargs);
+       return dev;
+}