usb: add ifnum to USBEndpoint

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/usb.c

@@ -422,6 +422,8 @@ void usb_ep_init(USBDevice *dev)
     for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) {
         dev->ep_in[ep].type = USB_ENDPOINT_XFER_INVALID;
         dev->ep_out[ep].type = USB_ENDPOINT_XFER_INVALID;
+        dev->ep_in[ep].ifnum = 0;
+        dev->ep_out[ep].ifnum = 0;
     }
 }
 
@@ -444,3 +446,15 @@ void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type)
     struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
     uep->type = type;
 }
+
+uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep)
+{
+    struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
+    return uep->ifnum;
+}
+
+void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum)
+{
+    struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
+    uep->ifnum = ifnum;
+}

hw/usb.h

@@ -175,6 +175,7 @@ struct USBDescString {
 
 struct USBEndpoint {
     uint8_t type;
+    uint8_t ifnum;
 };
 
 /* definition of a USB device */
@@ -334,7 +335,9 @@ void usb_cancel_packet(USBPacket * p);
 void usb_ep_init(USBDevice *dev);
 struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep);
 uint8_t usb_ep_get_type(USBDevice *dev, int pid, int ep);
+uint8_t usb_ep_get_ifnum(USBDevice *dev, int pid, int ep);
 void usb_ep_set_type(USBDevice *dev, int pid, int ep, uint8_t type);
+void usb_ep_set_ifnum(USBDevice *dev, int pid, int ep, uint8_t ifnum);
 
 void usb_attach(USBPort *port);
 void usb_detach(USBPort *port);

usb-linux.c

@@ -1206,6 +1206,7 @@ static int usb_linux_update_endp_table(USBHostDevice *s)
             assert(usb_ep_get_type(&s->dev, pid, ep) ==
                    USB_ENDPOINT_XFER_INVALID);
             usb_ep_set_type(&s->dev, pid, ep, type);
+            usb_ep_set_ifnum(&s->dev, pid, ep, interface);
 
             epd = get_endp(s, pid, ep);
             epd->halted = 0;