diff options
| -rw-r--r-- | usb-redir.c | 53 |
1 files changed, 48 insertions, 5 deletions
diff --git a/usb-redir.c b/usb-redir.c index 81a35c60b..99a12d5ed 100644 --- a/usb-redir.c +++ b/usb-redir.c @@ -61,6 +61,7 @@ struct endp_data { uint8_t interrupt_started; uint8_t interrupt_error; QTAILQ_HEAD(, buf_packet) bufpq; + int bufpq_target_size; }; struct USBRedirDevice { @@ -332,15 +333,42 @@ static int usbredir_handle_iso_data(USBRedirDevice *dev, USBPacket *p, uint8_t ep) { int status, len; - if (!dev->endpoint[EP2I(ep)].iso_started && !dev->endpoint[EP2I(ep)].iso_error) { struct usb_redir_start_iso_stream_header start_iso = { .endpoint = ep, - /* TODO maybe do something with these depending on ep interval? */ - .pkts_per_urb = 32, - .no_urbs = 3, }; + int pkts_per_sec; + + if (dev->dev.speed == USB_SPEED_HIGH) { + pkts_per_sec = 8000 / dev->endpoint[EP2I(ep)].interval; + } else { + pkts_per_sec = 1000 / dev->endpoint[EP2I(ep)].interval; + } + /* Testing has shown that we need circa 60 ms buffer */ + dev->endpoint[EP2I(ep)].bufpq_target_size = (pkts_per_sec * 60) / 1000; + + /* Aim for approx 100 interrupts / second on the client to + balance latency and interrupt load */ + start_iso.pkts_per_urb = pkts_per_sec / 100; + if (start_iso.pkts_per_urb < 1) { + start_iso.pkts_per_urb = 1; + } else if (start_iso.pkts_per_urb > 32) { + start_iso.pkts_per_urb = 32; + } + + start_iso.no_urbs = (dev->endpoint[EP2I(ep)].bufpq_target_size + + start_iso.pkts_per_urb - 1) / + start_iso.pkts_per_urb; + /* Output endpoints pre-fill only 1/2 of the packets, keeping the rest + as overflow buffer. Also see the usbredir protocol documentation */ + if (!(ep & USB_DIR_IN)) { + start_iso.no_urbs *= 2; + } + if (start_iso.no_urbs > 16) { + start_iso.no_urbs = 16; + } + /* No id, we look at the ep when receiving a status back */ usbredirparser_send_start_iso_stream(dev->parser, 0, &start_iso); usbredirparser_do_write(dev->parser); @@ -961,9 +989,24 @@ static void usbredir_ep_info(void *priv, dev->endpoint[i].type = ep_info->type[i]; dev->endpoint[i].interval = ep_info->interval[i]; dev->endpoint[i].interface = ep_info->interface[i]; - if (dev->endpoint[i].type != usb_redir_type_invalid) { + switch (dev->endpoint[i].type) { + case usb_redir_type_invalid: + break; + case usb_redir_type_iso: + case usb_redir_type_interrupt: + if (dev->endpoint[i].interval == 0) { + ERROR("Received 0 interval for isoc or irq endpoint\n"); + usbredir_device_disconnect(dev); + } + /* Fall through */ + case usb_redir_type_control: + case usb_redir_type_bulk: DPRINTF("ep: %02X type: %d interface: %d\n", I2EP(i), dev->endpoint[i].type, dev->endpoint[i].interface); + break; + default: + ERROR("Received invalid endpoint type\n"); + usbredir_device_disconnect(dev); } } } |