diff options
Diffstat (limited to 'usbmuxd/usb.h')
| -rw-r--r-- | usbmuxd/usb.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/usbmuxd/usb.h b/usbmuxd/usb.h index 8a48308..7eea707 100644 --- a/usbmuxd/usb.h +++ b/usbmuxd/usb.h | |||
| @@ -29,16 +29,14 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |||
| 29 | 29 | ||
| 30 | // libusb fragments packets larger than this (usbfs limitation) | 30 | // libusb fragments packets larger than this (usbfs limitation) |
| 31 | // on input, this creates race conditions and other issues | 31 | // on input, this creates race conditions and other issues |
| 32 | // I don't think the device uses larger packets | ||
| 33 | // if it does then we're going to have to implement proper framing... | ||
| 34 | #define USB_MRU 16384 | 32 | #define USB_MRU 16384 |
| 35 | 33 | ||
| 36 | // max transmission packet size | 34 | // max transmission packet size |
| 37 | // libusb fragments these too, but doesn't send ZLPs so we're safe | 35 | // libusb fragments these too, but doesn't send ZLPs so we're safe |
| 38 | // but maybe we need to send a ZLP ourselves at the end (see usb-linux.h) | 36 | // but we need to send a ZLP ourselves at the end (see usb-linux.c) |
| 39 | // we're using 3 * 16384 to optimize for the fragmentation | 37 | // we're using 3 * 16384 to optimize for the fragmentation |
| 40 | // this results in three URBs per full transfer, 32 USB packets each | 38 | // this results in three URBs per full transfer, 32 USB packets each |
| 41 | // if there are ZLP issues this should make them show up too | 39 | // if there are ZLP issues this should make them show up easily too |
| 42 | #define USB_MTU (3 * 16384) | 40 | #define USB_MTU (3 * 16384) |
| 43 | 41 | ||
| 44 | #define USB_PACKET_SIZE 512 | 42 | #define USB_PACKET_SIZE 512 |