Function rte_dev_iterator_init

dpdk/lib/eal/common/eal_common_dev.c:613–662

}

int
rte_dev_iterator_init(struct rte_dev_iterator *it,
		      const char *dev_str)
{
	struct rte_devargs devargs = { .bus = NULL };
	struct rte_class *cls = NULL;
	struct rte_bus *bus = NULL;

	/* Having both bus_str and cls_str NULL is illegal,
	 * marking this iterator as invalid unless
	 * everything goes well.
	 */
	it->bus_str = NULL;
	it->cls_str = NULL;

	/* Setting data field implies no malloc in parsing. */
	devargs.data = (void *)(intptr_t)dev_str;
	if (rte_devargs_layers_parse(&devargs, dev_str))
		goto get_out;

	bus = devargs.bus;
	cls = devargs.cls;
	/* The string should have at least
	 * one layer specified.
	 */
	if (bus == NULL && cls == NULL) {
		RTE_LOG(DEBUG, EAL, "Either bus or class must be specified.\n");
		rte_errno = EINVAL;
		goto get_out;
	}
	if (bus != NULL && bus->dev_iterate == NULL) {
		RTE_LOG(DEBUG, EAL, "Bus %s not supported\n", bus->name);
		rte_errno = ENOTSUP;
		goto get_out;
	}
	if (cls != NULL && cls->dev_iterate == NULL) {
		RTE_LOG(DEBUG, EAL, "Class %s not supported\n", cls->name);
		rte_errno = ENOTSUP;
		goto get_out;
	}
	it->bus_str = devargs.bus_str;
	it->cls_str = devargs.cls_str;
	it->dev_str = dev_str;
	it->bus = bus;
	it->cls = cls;
	it->device = NULL;
	it->class_device = NULL;
get_out:
	return -rte_errno;
}

static char *
dev_str_sane_copy(const char *str)