usbtest.c (9d3bd7684645834ede59d285af1d70ccabee9bf3) usbtest.c (82f92672ac3e36458fdb298f798913da8460fce9)
1#include <linux/kernel.h>
2#include <linux/errno.h>
3#include <linux/init.h>
4#include <linux/slab.h>
5#include <linux/mm.h>
6#include <linux/module.h>
7#include <linux/moduleparam.h>
8#include <linux/scatterlist.h>

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601 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */
602 return 1;
603 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */
604 return 1;
605 ERROR(tdev, "bogus config descriptor read size\n");
606 return 0;
607}
608
1#include <linux/kernel.h>
2#include <linux/errno.h>
3#include <linux/init.h>
4#include <linux/slab.h>
5#include <linux/mm.h>
6#include <linux/module.h>
7#include <linux/moduleparam.h>
8#include <linux/scatterlist.h>

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601 if (le16_to_cpu(config->wTotalLength) == len) /* read it all */
602 return 1;
603 if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */
604 return 1;
605 ERROR(tdev, "bogus config descriptor read size\n");
606 return 0;
607}
608
609static int is_good_ext(struct usbtest_dev *tdev, u8 *buf)
610{
611 struct usb_ext_cap_descriptor *ext;
612 u32 attr;
613
614 ext = (struct usb_ext_cap_descriptor *) buf;
615
616 if (ext->bLength != USB_DT_USB_EXT_CAP_SIZE) {
617 ERROR(tdev, "bogus usb 2.0 extension descriptor length\n");
618 return 0;
619 }
620
621 attr = le32_to_cpu(ext->bmAttributes);
622 /* bits[1:4] is used and others are reserved */
623 if (attr & ~0x1e) { /* reserved == 0 */
624 ERROR(tdev, "reserved bits set\n");
625 return 0;
626 }
627
628 return 1;
629}
630
609/* sanity test for standard requests working with usb_control_mesg() and some
610 * of the utility functions which use it.
611 *
612 * this doesn't test how endpoint halts behave or data toggles get set, since
613 * we won't do I/O to bulk/interrupt endpoints here (which is how to change
614 * halt or toggle). toggle testing is impractical without support from hcds.
615 *
616 * this avoids failing devices linux would normally work with, by not testing

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689 return (retval < 0) ? retval : -EDOM;
690 }
691
692 /*
693 * there's always [9.4.3] a bos device descriptor [9.6.2] in USB
694 * 3.0 spec
695 */
696 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0300) {
631/* sanity test for standard requests working with usb_control_mesg() and some
632 * of the utility functions which use it.
633 *
634 * this doesn't test how endpoint halts behave or data toggles get set, since
635 * we won't do I/O to bulk/interrupt endpoints here (which is how to change
636 * halt or toggle). toggle testing is impractical without support from hcds.
637 *
638 * this avoids failing devices linux would normally work with, by not testing

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711 return (retval < 0) ? retval : -EDOM;
712 }
713
714 /*
715 * there's always [9.4.3] a bos device descriptor [9.6.2] in USB
716 * 3.0 spec
717 */
718 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0300) {
719 struct usb_bos_descriptor *bos = NULL;
720 struct usb_dev_cap_header *header = NULL;
721 unsigned total, num, length;
722 u8 *buf;
723
697 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
698 sizeof(*udev->bos->desc));
699 if (retval != sizeof(*udev->bos->desc)) {
700 dev_err(&iface->dev, "bos descriptor --> %d\n", retval);
701 return (retval < 0) ? retval : -EDOM;
702 }
724 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
725 sizeof(*udev->bos->desc));
726 if (retval != sizeof(*udev->bos->desc)) {
727 dev_err(&iface->dev, "bos descriptor --> %d\n", retval);
728 return (retval < 0) ? retval : -EDOM;
729 }
730
731 bos = (struct usb_bos_descriptor *)dev->buf;
732 total = le16_to_cpu(bos->wTotalLength);
733 num = bos->bNumDeviceCaps;
734
735 if (total > TBUF_SIZE)
736 total = TBUF_SIZE;
737
738 /*
739 * get generic device-level capability descriptors [9.6.2]
740 * in USB 3.0 spec
741 */
742 retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
743 total);
744 if (retval != total) {
745 dev_err(&iface->dev, "bos descriptor set --> %d\n",
746 retval);
747 return (retval < 0) ? retval : -EDOM;
748 }
749
750 length = sizeof(*udev->bos->desc);
751 buf = dev->buf;
752 for (i = 0; i < num; i++) {
753 buf += length;
754 if (buf + sizeof(struct usb_dev_cap_header) >
755 dev->buf + total)
756 break;
757
758 header = (struct usb_dev_cap_header *)buf;
759 length = header->bLength;
760
761 if (header->bDescriptorType !=
762 USB_DT_DEVICE_CAPABILITY) {
763 dev_warn(&udev->dev, "not device capability descriptor, skip\n");
764 continue;
765 }
766
767 switch (header->bDevCapabilityType) {
768 case USB_CAP_TYPE_EXT:
769 if (buf + USB_DT_USB_EXT_CAP_SIZE >
770 dev->buf + total ||
771 !is_good_ext(dev, buf)) {
772 dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n");
773 return -EDOM;
774 }
775 break;
776 default:
777 break;
778 }
779 }
703 }
704
705 /* there's always [9.4.3] at least one config descriptor [9.6.3] */
706 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
707 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i,
708 dev->buf, TBUF_SIZE);
709 if (!is_good_config(dev, retval)) {
710 dev_err(&iface->dev,

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781
782 /* there's always [9.4.3] at least one config descriptor [9.6.3] */
783 for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
784 retval = usb_get_descriptor(udev, USB_DT_CONFIG, i,
785 dev->buf, TBUF_SIZE);
786 if (!is_good_config(dev, retval)) {
787 dev_err(&iface->dev,

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