Update network core.

lib/usb_network_stack/tusb_config.h

@@ -95,15 +95,14 @@
 #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     0
+#define CFG_TUD_NCM           1
 
 #ifdef __cplusplus
  }
 #endif
 
-#endif /* _TUSB_CONFIG_H_ */
+#endif /* _TUSB_CONFIG_H_ */

lib/usb_network_stack/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
@@ -107,8 +112,8 @@ uint8_t const * tud_descriptor_device_cb(void)
   #define EPNUM_NET_OUT     0x02
   #define EPNUM_NET_IN      0x82
 
-#elif CFG_TUSB_MCU == OPT_MCU_SAMG
-  // SAMG doesn't support a same endpoint number with different direction IN and OUT
+#elif CFG_TUSB_MCU == OPT_MCU_SAMG  || CFG_TUSB_MCU ==  OPT_MCU_SAMX7X
+  // SAMG & SAME70 don't support a same endpoint number with different direction IN and OUT
   //    e.g EP1 OUT & EP1 IN cannot exist together
   #define EPNUM_NET_NOTIF   0x81
   #define EPNUM_NET_OUT     0x02
@@ -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
@@ -138,15 +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
-// Note index is Num-1x
 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
@@ -222,4 +245,4 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
   _desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2);
 
   return _desc_str;
-}
+}

lib/usb_network_stack/usb_network.h

@@ -74,7 +74,7 @@ static err_t linkoutput_fn(struct netif *netif, struct pbuf *p) {
         if (!tud_ready()) 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;
         }