6 files changed, 37 insertions, 11 deletions
diff --git a/examples/device/cdc_msc_freertos/src/CMakeLists.txt b/examples/device/cdc_msc_freertos/src/CMakeLists.txt
index c0a665fa0..07fc4df89 100644
--- a/examples/device/cdc_msc_freertos/src/CMakeLists.txt
+++ b/examples/device/cdc_msc_freertos/src/CMakeLists.txt
@@ -23,7 +23,8 @@ target_sources(${COMPONENT_TARGET} PUBLIC
   "${TOP}/src/class/hid/hid_device.c"
   "${TOP}/src/class/midi/midi_device.c"
   "${TOP}/src/class/msc/msc_device.c"
-  "${TOP}/src/class/net/net_device.c"
+  "${TOP}/src/class/net/ecm_rndis_device.c"
+  "${TOP}/src/class/net/ncm_device.c"
   "${TOP}/src/class/usbtmc/usbtmc_device.c"
   "${TOP}/src/class/vendor/vendor_device.c"
   "${TOP}/src/portable/espressif/esp32sx/dcd_esp32sx.c"
diff --git a/examples/device/hid_composite_freertos/src/CMakeLists.txt b/examples/device/hid_composite_freertos/src/CMakeLists.txt
index a2a4fc9b1..6f156379f 100644
--- a/examples/device/hid_composite_freertos/src/CMakeLists.txt
+++ b/examples/device/hid_composite_freertos/src/CMakeLists.txt
@@ -23,7 +23,8 @@ target_sources(${COMPONENT_TARGET} PUBLIC
   "${TOP}/src/class/hid/hid_device.c"
   "${TOP}/src/class/midi/midi_device.c"
   "${TOP}/src/class/msc/msc_device.c"
-  "${TOP}/src/class/net/net_device.c"
+  "${TOP}/src/class/net/ecm_rndis_device.c"
+  "${TOP}/src/class/net/ncm_device.c"
   "${TOP}/src/class/usbtmc/usbtmc_device.c"
   "${TOP}/src/class/vendor/vendor_device.c"
   "${TOP}/src/portable/espressif/esp32sx/dcd_esp32sx.c"
diff --git a/examples/device/net_lwip_webserver/src/main.c b/examples/device/net_lwip_webserver/src/main.c
index 80831921a..a5bd2153a 100644
--- a/examples/device/net_lwip_webserver/src/main.c
+++ b/examples/device/net_lwip_webserver/src/main.c
@@ -97,7 +97,7 @@ static err_t linkoutput_fn(struct netif *netif, struct pbuf *p)
       return ERR_USE;
 
     /* if the network driver can accept another packet, we make it happen */
-    if (tud_network_can_xmit())
+    if (tud_network_can_xmit(p->tot_len))
     {
       tud_network_xmit(p, 0 /* unused for this example */);
       return ERR_OK;
diff --git a/examples/device/net_lwip_webserver/src/tusb_config.h b/examples/device/net_lwip_webserver/src/tusb_config.h
index 262d4ebce..114961cb7 100644
--- a/examples/device/net_lwip_webserver/src/tusb_config.h
+++ b/examples/device/net_lwip_webserver/src/tusb_config.h
@@ -95,12 +95,11 @@
 #endif
 
 //------------- CLASS -------------//
-#define CFG_TUD_CDC               0
-#define CFG_TUD_MSC               0
-#define CFG_TUD_HID               0
-#define CFG_TUD_MIDI              0
-#define CFG_TUD_VENDOR            0
-#define CFG_TUD_NET               1
+
+// Network class has 2 drivers: ECM/RNDIS and NCM.
+// Only one of the drivers can be enabled
+#define CFG_TUD_ECM_RNDIS     1
+#define CFG_TUD_NCM           (1-CFG_TUD_ECM_RNDIS)
 
 #ifdef __cplusplus
  }
diff --git a/examples/device/net_lwip_webserver/src/usb_descriptors.c b/examples/device/net_lwip_webserver/src/usb_descriptors.c
index 71e6c4582..2b4b2a0c3 100644
--- a/examples/device/net_lwip_webserver/src/usb_descriptors.c
+++ b/examples/device/net_lwip_webserver/src/usb_descriptors.c
@@ -33,7 +33,7 @@
  */
 #define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
 #define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
-                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) | _PID_MAP(NET, 5) )
+                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) | _PID_MAP(ECM_RNDIS, 5) | _PID_MAP(NCM, 5) )
 
 // String Descriptor Index
 enum
@@ -55,8 +55,12 @@ enum
 
 enum
 {
+#if CFG_TUD_ECM_RNDIS
   CONFIG_ID_RNDIS = 0,
   CONFIG_ID_ECM   = 1,
+#else
+  CONFIG_ID_NCM   = 0,
+#endif
   CONFIG_ID_COUNT
 };
 
@@ -99,6 +103,7 @@ uint8_t const * tud_descriptor_device_cb(void)
 //--------------------------------------------------------------------+
 #define MAIN_CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_RNDIS_DESC_LEN)
 #define ALT_CONFIG_TOTAL_LEN     (TUD_CONFIG_DESC_LEN + TUD_CDC_ECM_DESC_LEN)
+#define NCM_CONFIG_TOTAL_LEN     (TUD_CONFIG_DESC_LEN + TUD_CDC_NCM_DESC_LEN)
 
 #if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
   // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
@@ -120,6 +125,8 @@ uint8_t const * tud_descriptor_device_cb(void)
   #define EPNUM_NET_IN      0x82
 #endif
 
+#if CFG_TUD_ECM_RNDIS
+
 static uint8_t const rndis_configuration[] =
 {
   // Config number (index+1), interface count, string index, total length, attribute, power in mA
@@ -138,14 +145,31 @@ static uint8_t const ecm_configuration[] =
   TUD_CDC_ECM_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, STRID_MAC, EPNUM_NET_NOTIF, 64, EPNUM_NET_OUT, EPNUM_NET_IN, CFG_TUD_NET_ENDPOINT_SIZE, CFG_TUD_NET_MTU),
 };
 
+#else
+
+static uint8_t const ncm_configuration[] =
+{
+  // Config number (index+1), interface count, string index, total length, attribute, power in mA
+  TUD_CONFIG_DESCRIPTOR(CONFIG_ID_NCM+1, ITF_NUM_TOTAL, 0, NCM_CONFIG_TOTAL_LEN, 0, 100),
+
+  // Interface number, description string index, MAC address string index, EP notification address and size, EP data address (out, in), and size, max segment size.
+  TUD_CDC_NCM_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, STRID_MAC, EPNUM_NET_NOTIF, 64, EPNUM_NET_OUT, EPNUM_NET_IN, CFG_TUD_NET_ENDPOINT_SIZE, CFG_TUD_NET_MTU),
+};
+
+#endif
+
 // Configuration array: RNDIS and CDC-ECM
 // - Windows only works with RNDIS
 // - MacOS only works with CDC-ECM
 // - Linux will work on both
 static uint8_t const * const configuration_arr[2] =
 {
+#if CFG_TUD_ECM_RNDIS
   [CONFIG_ID_RNDIS] = rndis_configuration,
   [CONFIG_ID_ECM  ] = ecm_configuration
+#else
+  [CONFIG_ID_NCM  ] = ncm_configuration
+#endif
 };
 
 // Invoked when received GET CONFIGURATION DESCRIPTOR
diff --git a/examples/rules.mk b/examples/rules.mk
index 861973284..5f9dd9d19 100644
--- a/examples/rules.mk
+++ b/examples/rules.mk
@@ -33,7 +33,8 @@ SRC_C += \
 	src/class/hid/hid_device.c \
 	src/class/midi/midi_device.c \
 	src/class/msc/msc_device.c \
-	src/class/net/net_device.c \
+	src/class/net/ecm_rndis_device.c \
+	src/class/net/ncm_device.c \
 	src/class/usbtmc/usbtmc_device.c \
 	src/class/vendor/vendor_device.c