diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/usb/redirect.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c index 66637a85da..490c90fae1 100644 --- a/hw/usb/redirect.c +++ b/hw/usb/redirect.c @@ -662,21 +662,22 @@ static void usbredir_handle_interrupt_in_data(USBRedirDevice *dev, usbredir_handle_status(dev, p, status); } +/* + * Handle interrupt out data, the usbredir protocol expects us to do this + * async, so that it can report back a completion status. But guests will + * expect immediate completion for an interrupt endpoint, and handling this + * async causes migration issues. So we report success directly, counting + * on the fact that output interrupt packets normally always succeed. + */ static void usbredir_handle_interrupt_out_data(USBRedirDevice *dev, USBPacket *p, uint8_t ep) { - /* Output interrupt endpoint, normal async operation */ struct usb_redir_interrupt_packet_header interrupt_packet; uint8_t buf[p->iov.size]; DPRINTF("interrupt-out ep %02X len %zd id %"PRIu64"\n", ep, p->iov.size, p->id); - if (usbredir_already_in_flight(dev, p->id)) { - p->status = USB_RET_ASYNC; - return; - } - interrupt_packet.endpoint = ep; interrupt_packet.length = p->iov.size; @@ -685,7 +686,6 @@ static void usbredir_handle_interrupt_out_data(USBRedirDevice *dev, usbredirparser_send_interrupt_packet(dev->parser, p->id, &interrupt_packet, buf, p->iov.size); usbredirparser_do_write(dev->parser); - p->status = USB_RET_ASYNC; } static void usbredir_stop_interrupt_receiving(USBRedirDevice *dev, @@ -1647,11 +1647,13 @@ static void usbredir_interrupt_packet(void *priv, uint64_t id, /* bufp_alloc also adds the packet to the ep queue */ bufp_alloc(dev, data, data_len, interrupt_packet->status, ep); } else { - USBPacket *p = usbredir_find_packet_by_id(dev, ep, id); - if (p) { - usbredir_handle_status(dev, p, interrupt_packet->status); - p->actual_length = interrupt_packet->length; - usb_packet_complete(&dev->dev, p); + /* + * We report output interrupt packets as completed directly upon + * submission, so all we can do here if one failed is warn. + */ + if (interrupt_packet->status) { + WARNING("interrupt output failed status %d ep %02X id %"PRIu64"\n", + interrupt_packet->status, ep, id); } } } |