+ /* Parse each sub-list. */
+ for (i = 0; i < RTE_DIM(layers); i++) {
+ if (layers[i].kvlist == NULL)
+ continue;
+ kv = &layers[i].kvlist->pairs[0];
+ if (strcmp(kv->key, "bus") == 0) {
+ bus = rte_bus_find_by_name(kv->value);
+ if (bus == NULL) {
+ RTE_LOG(ERR, EAL, "Could not find bus \"%s\"\n",
+ kv->value);
+ ret = -EFAULT;
+ goto get_out;
+ }
+ } else if (strcmp(kv->key, "class") == 0) {
+ cls = rte_class_find_by_name(kv->value);
+ if (cls == NULL) {
+ RTE_LOG(ERR, EAL, "Could not find class \"%s\"\n",
+ kv->value);
+ ret = -EFAULT;
+ goto get_out;
+ }
+ } else if (strcmp(kv->key, "driver") == 0) {
+ /* Ignore */
+ continue;
+ }
+ }
+
+ /* Fill devargs fields. */
+ devargs->bus_str = layers[0].str;
+ devargs->cls_str = layers[1].str;
+ devargs->drv_str = layers[2].str;
+ devargs->bus = bus;
+ devargs->cls = cls;
+
+ /* If we own the data, clean up a bit
+ * the several layers string, to ease
+ * their parsing afterward.
+ */
+ if (devargs->data != devstr) {
+ char *s = (void *)(intptr_t)(devargs->data);
+
+ while ((s = strchr(s, '/'))) {
+ *s = '\0';
+ s++;
+ }
+ }
+
+get_out:
+ for (i = 0; i < RTE_DIM(layers); i++) {
+ if (layers[i].kvlist)
+ rte_kvargs_free(layers[i].kvlist);
+ }
+ if (ret != 0)
+ rte_errno = -ret;
+ return ret;
+}
+
+static int
+bus_name_cmp(const struct rte_bus *bus, const void *name)
+{
+ return strncmp(bus->name, name, strlen(bus->name));
+}
+
+int
+rte_devargs_parse(struct rte_devargs *da, const char *dev)
+{
+ struct rte_bus *bus = NULL;
+ const char *devname;
+ const size_t maxlen = sizeof(da->name);
+ size_t i;
+
+ if (da == NULL)
+ return -EINVAL;
+
+ /* Retrieve eventual bus info */
+ do {
+ devname = dev;
+ bus = rte_bus_find(bus, bus_name_cmp, dev);
+ if (bus == NULL)
+ break;
+ devname = dev + strlen(bus->name) + 1;
+ if (rte_bus_find_by_device_name(devname) == bus)
+ break;
+ } while (1);
+ /* Store device name */
+ i = 0;
+ while (devname[i] != '\0' && devname[i] != ',') {
+ da->name[i] = devname[i];
+ i++;
+ if (i == maxlen) {
+ RTE_LOG(WARNING, EAL, "Parsing \"%s\": device name should be shorter than %zu\n",
+ dev, maxlen);
+ da->name[i - 1] = '\0';
+ return -EINVAL;
+ }
+ }
+ da->name[i] = '\0';
+ if (bus == NULL) {
+ bus = rte_bus_find_by_device_name(da->name);
+ if (bus == NULL) {
+ RTE_LOG(ERR, EAL, "failed to parse device \"%s\"\n",
+ da->name);
+ return -EFAULT;
+ }
+ }
+ da->bus = bus;
+ /* Parse eventual device arguments */
+ if (devname[i] == ',')
+ da->args = strdup(&devname[i + 1]);
+ else
+ da->args = strdup("");
+ if (da->args == NULL) {
+ RTE_LOG(ERR, EAL, "not enough memory to parse arguments\n");
+ return -ENOMEM;