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fix(usb): scrub qemu strings from usb-net descriptors

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sandwich
2026-10-10 13:33:08 +02:00
parent 96bfd518d3
commit 8cb9a7f1b9
2 changed files with 54 additions and 4 deletions
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patches/qemu/05-usb-hid.patch → patches/qemu/05-usb-identity.patch
+53 -3
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@@ -1,11 +1,15 @@
Subject: [PATCH] usb-hid: QEMU_USB
Subject: [PATCH] usb: QEMU_USB
Targets VMAware check: QEMU_USB
USB HID descriptors carrying QEMU vendor strings and product IDs.
USB device identity strings that name QEMU: the HID descriptors (dev-hid.c)
and the usb-net CDC/RNDIS descriptors plus its RNDIS vendor-description and
product_desc (dev-network.c). The usb-net VID/PID (0525:a4a1, a real Linux
USB Ethernet Gadget id) is left intact so the device stays CDC-class and the
guest's generic CDC-ECM driver (e.g. macOS AppleUSBEthernet) still binds it.
Applies to QEMU v11.1.2. Apply from the source root with:
patch -p1 < 05-usb-hid.patch
patch -p1 < 05-usb-identity.patch
---
diff --git a/hw/usb/dev-hid.c b/hw/usb/dev-hid.c
@@ -109,3 +113,49 @@ index ae19d60..9fe1223 100644
dc->vmsd = &vmstate_usb_kbd;
device_class_set_props(dc, usb_keyboard_properties);
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c
--- a/hw/usb/dev-network.c
+++ b/hw/usb/dev-network.c
@@ -99,15 +99,15 @@
#define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */
static const USBDescStrings usb_net_stringtable = {
- [STRING_MANUFACTURER] = "QEMU",
- [STRING_PRODUCT] = "RNDIS/QEMU USB Network Device",
+ [STRING_MANUFACTURER] = "Linux",
+ [STRING_PRODUCT] = "USB Ethernet",
[STRING_ETHADDR] = "400102030405",
- [STRING_DATA] = "QEMU USB Net Data Interface",
- [STRING_CONTROL] = "QEMU USB Net Control Interface",
- [STRING_RNDIS_CONTROL] = "QEMU USB Net RNDIS Control Interface",
- [STRING_CDC] = "QEMU USB Net CDC",
- [STRING_SUBSET] = "QEMU USB Net Subset",
- [STRING_RNDIS] = "QEMU USB Net RNDIS",
+ [STRING_DATA] = "CDC Ethernet Data",
+ [STRING_CONTROL] = "CDC Ethernet Control",
+ [STRING_RNDIS_CONTROL] = "RNDIS Communications Control",
+ [STRING_CDC] = "CDC Ethernet",
+ [STRING_SUBSET] = "CDC Subset Ethernet",
+ [STRING_RNDIS] = "RNDIS Ethernet",
[STRING_SERIALNUMBER] = "1",
};
@@ -717,7 +717,7 @@
/* mandatory */
case OID_GEN_VENDOR_DESCRIPTION:
- pstrcpy((char *)outbuf, outlen, "QEMU USB RNDIS Net");
+ pstrcpy((char *)outbuf, outlen, "USB Ethernet");
return strlen((char *)outbuf) + 1;
case OID_GEN_VENDOR_DRIVER_VERSION:
@@ -1417,7 +1417,7 @@
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
uc->realize = usb_net_realize;
- uc->product_desc = "QEMU USB Network Interface";
+ uc->product_desc = "USB Ethernet Adapter";
uc->usb_desc = &desc_net;
uc->handle_reset = usb_net_handle_reset;
uc->handle_control = usb_net_handle_control;