[Qemu-devel] [PATCH 12/20] usb: return BABBLE rather then NAK when we receive too much data

[Gerd Hoffmann <kraxel@redhat.com>]

From: Hans de Goede <hdegoede@redhat.com>

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 usb-linux.c |    8 +++++++-
 usb-redir.c |    4 ++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/usb-linux.c b/usb-linux.c
index 47994f3..38df9e6 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -364,6 +364,10 @@ static void async_complete(void *opaque)
                 p->result = USB_RET_STALL;
                 break;
 
+            case -EOVERFLOW:
+                p->result = USB_RET_BABBLE;
+                break;
+
             default:
                 p->result = USB_RET_NAK;
                 break;
@@ -722,6 +726,8 @@ static int urb_status_to_usb_ret(int status)
     switch (status) {
     case -EPIPE:
         return USB_RET_STALL;
+    case -EOVERFLOW:
+        return USB_RET_BABBLE;
     default:
         return USB_RET_NAK;
     }
@@ -759,7 +765,7 @@ static int usb_host_handle_iso_data(USBHostDevice *s, USBPacket *p, int in)
             } else if (aurb[i].urb.iso_frame_desc[j].actual_length
                        > p->iov.size) {
                 printf("husb: received iso data is larger then packet\n");
-                len = USB_RET_NAK;
+                len = USB_RET_BABBLE;
             /* All good copy data over */
             } else {
                 len = aurb[i].urb.iso_frame_desc[j].actual_length;
diff --git a/usb-redir.c b/usb-redir.c
index a87de6e..c52311a 100644
--- a/usb-redir.c
+++ b/usb-redir.c
@@ -447,7 +447,7 @@ static int usbredir_handle_iso_data(USBRedirDevice *dev, USBPacket *p,
             ERROR("received iso data is larger then packet ep %02X (%d > %d)\n",
                   ep, len, (int)p->iov.size);
             bufp_free(dev, isop, ep);
-            return USB_RET_NAK;
+            return USB_RET_BABBLE;
         }
         usb_packet_copy(p, isop->data, len);
         bufp_free(dev, isop, ep);
@@ -566,7 +566,7 @@ static int usbredir_handle_interrupt_data(USBRedirDevice *dev,
         if (len > p->iov.size) {
             ERROR("received int data is larger then packet ep %02X\n", ep);
             bufp_free(dev, intp, ep);
-            return USB_RET_NAK;
+            return USB_RET_BABBLE;
         }
         usb_packet_copy(p, intp->data, len);
         bufp_free(dev, intp, ep);
-- 
1.7.1