From 954cbf7bb53476e99091f9c99a8014af2491f6ef Mon Sep 17 00:00:00 2001
From: Michael Brown <mcb30@ipxe.org>
Date: Tue, 6 Sep 2022 19:30:51 +0100
Subject: [PATCH] usbnet: Accept mandatory USB_CDC_SET_ETHERNET_PACKET_FILTER
 request

The USB_CDC_SET_ETHERNET_PACKET_FILTER request is mandatory for
CDC-ECM devices.  Accept this request, ignoring the actual filter
value (to match the existing behaviour for RNDIS).

Signed-off-by: Michael Brown <mcb30@ipxe.org>
Message-Id: <20220906183053.3625472-3-mcb30@ipxe.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/usb/dev-network.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c
index 61bf598870..155df935cd 100644
--- a/hw/usb/dev-network.c
+++ b/hw/usb/dev-network.c
@@ -1122,6 +1122,12 @@ static void usb_net_handle_control(USBDevice *dev, USBPacket *p,
 #endif
         break;
 
+    case ClassInterfaceOutRequest | USB_CDC_SET_ETHERNET_PACKET_FILTER:
+        if (is_rndis(s)) {
+            goto fail;
+        }
+        break;
+
     default:
     fail:
         fprintf(stderr, "usbnet: failed control transaction: "