21 static void complicated_callback(struct urb *urb);
252 static void simple_callback(struct urb *urb)  in simple_callback()  argument
254 	complete(urb->context);  in simple_callback()
257 static struct urb *usbtest_alloc_urb(  in usbtest_alloc_urb()
266 	struct urb		*urb;  in usbtest_alloc_urb()  local
268 	urb = usb_alloc_urb(0, GFP_KERNEL);  in usbtest_alloc_urb()
269 	if (!urb)  in usbtest_alloc_urb()
270 		return urb;  in usbtest_alloc_urb()
273 		usb_fill_int_urb(urb, udev, pipe, NULL, bytes, complete_fn,  in usbtest_alloc_urb()
276 		usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, complete_fn,  in usbtest_alloc_urb()
279 	urb->interval = (udev->speed == USB_SPEED_HIGH)  in usbtest_alloc_urb()
282 	urb->transfer_flags = transfer_flags;  in usbtest_alloc_urb()
284 		urb->transfer_flags |= URB_SHORT_NOT_OK;  in usbtest_alloc_urb()
287 		return urb;  in usbtest_alloc_urb()
289 	if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)  in usbtest_alloc_urb()
290 		urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,  in usbtest_alloc_urb()
291 			GFP_KERNEL, &urb->transfer_dma);  in usbtest_alloc_urb()
293 		urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL);  in usbtest_alloc_urb()
295 	if (!urb->transfer_buffer) {  in usbtest_alloc_urb()
296 		usb_free_urb(urb);  in usbtest_alloc_urb()
303 		memset(urb->transfer_buffer, GUARD_BYTE, offset);  in usbtest_alloc_urb()
304 		urb->transfer_buffer += offset;  in usbtest_alloc_urb()
305 		if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)  in usbtest_alloc_urb()
306 			urb->transfer_dma += offset;  in usbtest_alloc_urb()
311 	memset(urb->transfer_buffer,  in usbtest_alloc_urb()
312 			usb_pipein(urb->pipe) ? GUARD_BYTE : 0,  in usbtest_alloc_urb()
314 	return urb;  in usbtest_alloc_urb()
317 static struct urb *simple_alloc_urb(  in simple_alloc_urb()
327 static struct urb *complicated_alloc_urb(  in complicated_alloc_urb()
358 static void simple_fill_buf(struct urb *urb)  in simple_fill_buf()  argument
361 	u8		*buf = urb->transfer_buffer;  in simple_fill_buf()
362 	unsigned	len = urb->transfer_buffer_length;  in simple_fill_buf()
372 		maxpacket = get_maxpacket(urb->dev, urb->pipe);  in simple_fill_buf()
384 static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb)  in check_guard_bytes()  argument
386 	u8 *buf = urb->transfer_buffer;  in check_guard_bytes()
400 static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb)  in simple_check_buf()  argument
404 	u8		*buf = urb->transfer_buffer;  in simple_check_buf()
405 	unsigned	len = urb->actual_length;  in simple_check_buf()
406 	unsigned	maxpacket = get_maxpacket(urb->dev, urb->pipe);  in simple_check_buf()
408 	int ret = check_guard_bytes(tdev, urb);  in simple_check_buf()
439 static void simple_free_urb(struct urb *urb)  in simple_free_urb()  argument
441 	unsigned long offset = buffer_offset(urb->transfer_buffer);  in simple_free_urb()
443 	if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)  in simple_free_urb()
445 			urb->dev,  in simple_free_urb()
446 			urb->transfer_buffer_length + offset,  in simple_free_urb()
447 			urb->transfer_buffer - offset,  in simple_free_urb()
448 			urb->transfer_dma - offset);  in simple_free_urb()
450 		kfree(urb->transfer_buffer - offset);  in simple_free_urb()
451 	usb_free_urb(urb);  in simple_free_urb()
456 	struct urb		*urb,  in simple_io()  argument
463 	struct usb_device	*udev = urb->dev;  in simple_io()
464 	int			max = urb->transfer_buffer_length;  in simple_io()
469 	urb->context = &completion;  in simple_io()
472 		if (usb_pipeout(urb->pipe)) {  in simple_io()
473 			simple_fill_buf(urb);  in simple_io()
474 			urb->transfer_flags |= URB_ZERO_PACKET;  in simple_io()
476 		retval = usb_submit_urb(urb, GFP_KERNEL);  in simple_io()
482 			usb_kill_urb(urb);  in simple_io()
483 			retval = (urb->status == -ENOENT ?  in simple_io()
484 				  -ETIMEDOUT : urb->status);  in simple_io()
486 			retval = urb->status;  in simple_io()
489 		urb->dev = udev;  in simple_io()
490 		if (retval == 0 && usb_pipein(urb->pipe))  in simple_io()
491 			retval = simple_check_buf(tdev, urb);  in simple_io()
494 			int	len = urb->transfer_buffer_length;  in simple_io()
500 			urb->transfer_buffer_length = len;  in simple_io()
505 	urb->transfer_buffer_length = max;  in simple_io()
1074 	struct urb		**urb;  member
1087 static void ctrl_complete(struct urb *urb)  in ctrl_complete()  argument
1089 	struct ctrl_ctx		*ctx = urb->context;  in ctrl_complete()
1092 	int			status = urb->status;  in ctrl_complete()
1095 	reqp = (struct usb_ctrlrequest *)urb->setup_packet;  in ctrl_complete()
1149 					urb->actual_length,  in ctrl_complete()
1150 					urb->transfer_buffer_length);  in ctrl_complete()
1158 				struct urb *u = ctx->urb[  in ctrl_complete()
1162 				if (u == urb || !u->dev)  in ctrl_complete()
1183 		status = usb_submit_urb(urb, GFP_ATOMIC);  in ctrl_complete()
1188 			urb->dev = NULL;  in ctrl_complete()
1192 		urb->dev = NULL;  in ctrl_complete()
1204 	struct urb		**urb;  in test_ctrl_queue()  local
1224 	urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL);  in test_ctrl_queue()
1225 	if (!urb)  in test_ctrl_queue()
1230 		struct urb		*u;  in test_ctrl_queue()
1369 		urb[i] = u = simple_alloc_urb(udev, pipe, len, 0);  in test_ctrl_queue()
1386 	context.urb = urb;  in test_ctrl_queue()
1389 		context.status = usb_submit_urb(urb[i], GFP_ATOMIC);  in test_ctrl_queue()
1408 		if (!urb[i])  in test_ctrl_queue()
1410 		urb[i]->dev = udev;  in test_ctrl_queue()
1411 		kfree(urb[i]->setup_packet);  in test_ctrl_queue()
1412 		simple_free_urb(urb[i]);  in test_ctrl_queue()
1414 	kfree(urb);  in test_ctrl_queue()
1422 static void unlink1_callback(struct urb *urb)  in unlink1_callback()  argument
1424 	int	status = urb->status;  in unlink1_callback()
1428 		status = usb_submit_urb(urb, GFP_ATOMIC);  in unlink1_callback()
1430 		urb->status = status;  in unlink1_callback()
1431 		complete(urb->context);  in unlink1_callback()
1437 	struct urb		*urb;  in unlink1()  local
1442 	urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size, 0);  in unlink1()
1443 	if (!urb)  in unlink1()
1445 	urb->context = &completion;  in unlink1()
1446 	urb->complete = unlink1_callback;  in unlink1()
1448 	if (usb_pipeout(urb->pipe)) {  in unlink1()
1449 		simple_fill_buf(urb);  in unlink1()
1450 		urb->transfer_flags |= URB_ZERO_PACKET;  in unlink1()
1459 	retval = usb_submit_urb(urb, GFP_KERNEL);  in unlink1()
1471 			retval = usb_unlink_urb(urb);  in unlink1()
1473 			if (retval == 0 && usb_pipein(urb->pipe))  in unlink1()
1474 				retval = simple_check_buf(dev, urb);  in unlink1()
1500 		usb_kill_urb(urb);  in unlink1()
1503 	retval = urb->status;  in unlink1()
1504 	simple_free_urb(urb);  in unlink1()
1531 	struct urb		**urbs;
1534 static void unlink_queued_callback(struct urb *urb)  in unlink_queued_callback()  argument
1536 	int			status = urb->status;  in unlink_queued_callback()
1537 	struct queued_ctx	*ctx = urb->context;  in unlink_queued_callback()
1541 	if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) {  in unlink_queued_callback()
1575 	ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL);  in unlink_queued()
1629 static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)  in verify_not_halted()  argument
1635 	retval = usb_get_std_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);  in verify_not_halted()
1645 	retval = simple_io(tdev, urb, 1, 0, 0, __func__);  in verify_not_halted()
1651 static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)  in verify_halted()  argument
1657 	retval = usb_get_std_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);  in verify_halted()
1667 	retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__);  in verify_halted()
1670 	retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted");  in verify_halted()
1676 static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb)  in test_halt()  argument
1681 	retval = verify_not_halted(tdev, ep, urb);  in test_halt()
1686 	retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0),  in test_halt()
1694 	retval = verify_halted(tdev, ep, urb);  in test_halt()
1699 		ret = usb_clear_halt(urb->dev, urb->pipe);  in test_halt()
1708 	retval = usb_clear_halt(urb->dev, urb->pipe);  in test_halt()
1713 	retval = verify_not_halted(tdev, ep, urb);  in test_halt()
1722 static int test_toggle_sync(struct usbtest_dev *tdev, int ep, struct urb *urb)  in test_toggle_sync()  argument
1727 	retval = usb_clear_halt(urb->dev, urb->pipe);  in test_toggle_sync()
1734 	retval = simple_io(tdev, urb, 1, 0, 0, __func__);  in test_toggle_sync()
1739 	retval = usb_clear_halt(urb->dev, urb->pipe);  in test_toggle_sync()
1746 	retval = simple_io(tdev, urb, 1, 0, 0, __func__);  in test_toggle_sync()
1755 	struct urb		*urb;  in halt_simple()  local
1759 		urb = simple_alloc_urb(udev, 0, 1024, 0);  in halt_simple()
1761 		urb = simple_alloc_urb(udev, 0, 512, 0);  in halt_simple()
1762 	if (urb == NULL)  in halt_simple()
1767 		urb->pipe = dev->in_pipe;  in halt_simple()
1768 		retval = test_halt(dev, ep, urb);  in halt_simple()
1775 		urb->pipe = dev->out_pipe;  in halt_simple()
1776 		retval = test_halt(dev, ep, urb);  in halt_simple()
1779 	simple_free_urb(urb);  in halt_simple()
1787 	struct urb		*urb;  in toggle_sync_simple()  local
1796 	urb = simple_alloc_urb(udev, 0,  2 * maxp, 0);  in toggle_sync_simple()
1797 	if (urb == NULL)  in toggle_sync_simple()
1800 	urb->transfer_flags |= URB_ZERO_PACKET;  in toggle_sync_simple()
1803 	urb->pipe = dev->out_pipe;  in toggle_sync_simple()
1804 	retval = test_toggle_sync(dev, ep, urb);  in toggle_sync_simple()
1806 	simple_free_urb(urb);  in toggle_sync_simple()
1926 static void complicated_callback(struct urb *urb)  in complicated_callback()  argument
1928 	struct transfer_context	*ctx = urb->context;  in complicated_callback()
1934 	ctx->packet_count += urb->number_of_packets;  in complicated_callback()
1935 	if (urb->error_count > 0)  in complicated_callback()
1936 		ctx->errors += urb->error_count;  in complicated_callback()
1937 	else if (urb->status != 0)  in complicated_callback()
1938 		ctx->errors += (ctx->is_iso ? urb->number_of_packets : 1);  in complicated_callback()
1939 	else if (urb->actual_length != urb->transfer_buffer_length)  in complicated_callback()
1941 	else if (check_guard_bytes(ctx->dev, urb) != 0)  in complicated_callback()
1944 	if (urb->status == 0 && ctx->count > (ctx->pending - 1)  in complicated_callback()
1946 		int status = usb_submit_urb(urb, GFP_ATOMIC);  in complicated_callback()
1974 static struct urb *iso_alloc_urb(  in iso_alloc_urb()
1982 	struct urb		*urb;  in iso_alloc_urb()  local
1996 	urb = usb_alloc_urb(packets, GFP_KERNEL);  in iso_alloc_urb()
1997 	if (!urb)  in iso_alloc_urb()
1998 		return urb;  in iso_alloc_urb()
1999 	urb->dev = udev;  in iso_alloc_urb()
2000 	urb->pipe = pipe;  in iso_alloc_urb()
2002 	urb->number_of_packets = packets;  in iso_alloc_urb()
2003 	urb->transfer_buffer_length = bytes;  in iso_alloc_urb()
2004 	urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,  in iso_alloc_urb()
2006 							&urb->transfer_dma);  in iso_alloc_urb()
2007 	if (!urb->transfer_buffer) {  in iso_alloc_urb()
2008 		usb_free_urb(urb);  in iso_alloc_urb()
2012 		memset(urb->transfer_buffer, GUARD_BYTE, offset);  in iso_alloc_urb()
2013 		urb->transfer_buffer += offset;  in iso_alloc_urb()
2014 		urb->transfer_dma += offset;  in iso_alloc_urb()
2018 	memset(urb->transfer_buffer,  in iso_alloc_urb()
2019 			usb_pipein(urb->pipe) ? GUARD_BYTE : 0,  in iso_alloc_urb()
2024 		urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp);  in iso_alloc_urb()
2025 		bytes -= urb->iso_frame_desc[i].length;  in iso_alloc_urb()
2027 		urb->iso_frame_desc[i].offset = maxp * i;  in iso_alloc_urb()
2030 	urb->complete = complicated_callback;  in iso_alloc_urb()
2032 	urb->interval = 1 << (desc->bInterval - 1);  in iso_alloc_urb()
2033 	urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;  in iso_alloc_urb()
2034 	return urb;  in iso_alloc_urb()
2046 	struct urb		**urbs;  in test_queue()
2167 	struct urb *urb = usbtest_alloc_urb(testdev_to_usbdev(tdev),  in test_unaligned_bulk()  local
2170 	if (!urb)  in test_unaligned_bulk()
2173 	retval = simple_io(tdev, urb, iterations, 0, 0, label);  in test_unaligned_bulk()
2174 	simple_free_urb(urb);  in test_unaligned_bulk()
2184 	struct urb		*urb;  in usbtest_do_ioctl()  local
2217 		urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0);  in usbtest_do_ioctl()
2218 		if (!urb) {  in usbtest_do_ioctl()
2223 		retval = simple_io(dev, urb, param->iterations, 0, 0, "test1");  in usbtest_do_ioctl()
2224 		simple_free_urb(urb);  in usbtest_do_ioctl()
2232 		urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0);  in usbtest_do_ioctl()
2233 		if (!urb) {  in usbtest_do_ioctl()
2238 		retval = simple_io(dev, urb, param->iterations, 0, 0, "test2");  in usbtest_do_ioctl()
2239 		simple_free_urb(urb);  in usbtest_do_ioctl()
2247 		urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0);  in usbtest_do_ioctl()
2248 		if (!urb) {  in usbtest_do_ioctl()
2253 		retval = simple_io(dev, urb, param->iterations, param->vary,  in usbtest_do_ioctl()
2255 		simple_free_urb(urb);  in usbtest_do_ioctl()
2263 		urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0);  in usbtest_do_ioctl()
2264 		if (!urb) {  in usbtest_do_ioctl()
2269 		retval = simple_io(dev, urb, param->iterations, param->vary,  in usbtest_do_ioctl()
2271 		simple_free_urb(urb);  in usbtest_do_ioctl()
2571 		urb = simple_alloc_urb(udev, dev->out_int_pipe, param->length,  in usbtest_do_ioctl()
2573 		if (!urb) {  in usbtest_do_ioctl()
2578 		retval = simple_io(dev, urb, param->iterations, 0, 0, "test25");  in usbtest_do_ioctl()
2579 		simple_free_urb(urb);  in usbtest_do_ioctl()
2587 		urb = simple_alloc_urb(udev, dev->in_int_pipe, param->length,  in usbtest_do_ioctl()
2589 		if (!urb) {  in usbtest_do_ioctl()
2594 		retval = simple_io(dev, urb, param->iterations, 0, 0, "test26");  in usbtest_do_ioctl()
2595 		simple_free_urb(urb);  in usbtest_do_ioctl()