[Qemu-devel] [PATCH 3/4] usbnet: Detect short packets as sent by the xHCI controller

[Michael Brown]

The xHCI controller will ignore the endpoint MTU and so may deliver
packets of any length.  Detect short packets as being any packet that
has a length of zero or a length that is not a multiple of the MTU.

Signed-off-by: Michael Brown <address@hidden>
---
 hw/usb/dev-network.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c
index f4e7acb..09312d4 100644
--- a/hw/usb/dev-network.c
+++ b/hw/usb/dev-network.c
@@ -1206,7 +1206,7 @@ static void usb_net_handle_dataout(USBNetState *s, 
USBPacket *p)
     s->out_ptr += sz;
 
     if (!is_rndis(s)) {
-        if (p->iov.size < 64) {
+        if (p->iov.size % 64 || p->iov.size == 0) {
             qemu_send_packet(qemu_get_queue(s->nic), s->out_buf, s->out_ptr);
             s->out_ptr = 0;
         }
-- 
2.3.8