usbnet: OS-agnostic (Windows/Linux/macOS) network driver

2 files changed, 39 insertions, 11 deletions

diff --git a/src/device/usbd.c b/src/device/usbd.c
index 2adac429c..9d15ea4a4 100644
--- a/src/device/usbd.c
+++ b/src/device/usbd.c
@@ -184,21 +184,47 @@ static usbd_class_driver_t const _usbd_driver[] =
   #endif
 
   #if CFG_TUD_NET
+#if CFG_TUD_NET != OPT_NET_EEM
+  /* RNDIS management interface */
   {
-      .class_code       = 
-#if CFG_TUD_NET == OPT_NET_RNDIS
-                          TUD_RNDIS_ITF_CLASS,
-#else
-                          TUSB_CLASS_CDC,
+      .class_code       = TUD_RNDIS_ITF_CLASS,
+      .init             = netd_init,
+      .reset            = netd_reset,
+      .open             = netd_open,
+      .control_request  = netd_control_request,
+      .control_complete = netd_control_complete,
+      .xfer_cb          = netd_xfer_cb,
+      .sof              = NULL,
+  },
 #endif
+  /* CDC-ECM management interface; CDC-EEM data interface */
+  {
+      .class_code       = TUSB_CLASS_CDC,
       .init             = netd_init,
       .reset            = netd_reset,
+#if CFG_TUD_NET == OPT_NET_EEM
+      .open             = netd_open_data,
+#else
       .open             = netd_open,
+#endif
       .control_request  = netd_control_request,
       .control_complete = netd_control_complete,
       .xfer_cb          = netd_xfer_cb,
-      .sof              = NULL
+      .sof              = NULL,
   },
+  /* RNDIS/CDC-ECM data interface */
+#if CFG_TUD_NET != OPT_NET_EEM
+  {
+      .class_code       = TUSB_CLASS_CDC_DATA,
+      .init             = netd_init_data,
+      .reset            = NULL,
+      .open             = netd_open_data,
+      .control_request  = NULL,
+      .control_complete = NULL,
+      .xfer_cb          = netd_xfer_cb,
+      .sof              = NULL,
+  },
+#endif
   #endif
 };
 
diff --git a/src/device/usbd.h b/src/device/usbd.h
index 817af20e3..756f5b161 100644
--- a/src/device/usbd.h
+++ b/src/device/usbd.h
@@ -342,8 +342,8 @@ TU_ATTR_WEAK bool tud_vendor_control_complete_cb(uint8_t rhport, tusb_control_re
 
 //------------- CDC-ECM -------------//
 
-// Length of template descriptor: 62 bytes
-#define TUD_CDC_ECM_DESC_LEN  (9+5+5+13+7+9+7+7)
+// Length of template descriptor: 71 bytes
+#define TUD_CDC_ECM_DESC_LEN  (9+5+5+13+7+9+9+7+7)
 
 // CDC-ECM Descriptor Template
 // Interface number, description string index, MAC address string index, EP notification address and size, EP data address (out, in), and size, max segment size.
@@ -358,8 +358,10 @@ TU_ATTR_WEAK bool tud_vendor_control_complete_cb(uint8_t rhport, tusb_control_re
   13, TUSB_DESC_CS_INTERFACE, CDC_FUNC_DESC_ETHERNET_NETWORKING, _mac_stridx, 0, 0, 0, 0, U16_TO_U8S_LE(_maxsegmentsize), U16_TO_U8S_LE(0), 0,\
   /* Endpoint Notification */\
   7, TUSB_DESC_ENDPOINT, _ep_notif, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(_ep_notif_size), 1,\
-  /* CDC Data Interface */\
-  9, TUSB_DESC_INTERFACE, (uint8_t)((_itfnum)+1), 0, 2, TUSB_CLASS_CDC_DATA, 0, 0, 0,\
+  /* CDC Data Interface (default inactive) */\
+  9, TUSB_DESC_INTERFACE, (uint8_t)((_itfnum)+1), 0, 0, TUSB_CLASS_CDC_DATA, 0, 0, 0,\
+  /* CDC Data Interface (alternative active) */\
+  9, TUSB_DESC_INTERFACE, (uint8_t)((_itfnum)+1), 1, 2, TUSB_CLASS_CDC_DATA, 0, 0, 0,\
   /* Endpoint In */\
   7, TUSB_DESC_ENDPOINT, _epin, TUSB_XFER_BULK, U16_TO_U8S_LE(_epsize), 0,\
   /* Endpoint Out */\
@@ -372,7 +374,7 @@ TU_ATTR_WEAK bool tud_vendor_control_complete_cb(uint8_t rhport, tusb_control_re
   /* Windows XP */
   #define TUD_RNDIS_ITF_CLASS    TUSB_CLASS_CDC
   #define TUD_RNDIS_ITF_SUBCLASS CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL
-  #define TUD_RNDIS_ITF_PROTOCOL CDC_COMM_PROTOCOL_MICROSOFT_RNDIS
+  #define TUD_RNDIS_ITF_PROTOCOL 0xFF /* CDC_COMM_PROTOCOL_MICROSOFT_RNDIS */
 #else
   /* Windows 7+ */
   #define TUD_RNDIS_ITF_CLASS    0xE0