drivers/usbhost/usbhost_cdcecm.c: Added support for Host CDC-ECM

Added support for USB host to use an USB CDC-ECM device.
This class is used for usb-ethernet adapters as well as many modems.

Signed-off-by: daniellizewski <daniellizewski@geotab.com>

drivers/usbhost/CMakeLists.txt

@@ -47,6 +47,10 @@ if(CONFIG_USBHOST)
     list(APPEND SRCS usbhost_cdcacm.c)
   endif()
 
+  if(CONFIG_USBHOST_CDCECM)
+    list(APPEND SRCS usbhost_cdcecm.c)
+  endif()
+
   if(CONFIG_USBHOST_CDCMBIM)
     list(APPEND SRCS usbhost_cdcmbim.c)
   endif()

drivers/usbhost/Kconfig

@@ -304,6 +304,25 @@ config USBHOST_CDCACM_TXBUFSIZE
 
 endif # USBHOST_CDCACM
 
+config USBHOST_CDCECM
+	bool "CDC/ECM support"
+	default n
+	depends on USBHOST_HAVE_ASYNCH && !USBHOST_BULK_DISABLE && !USBHOST_INT_DISABLE
+	select USBHOST_ASYNCH
+	select NET_ETHERNET
+	---help---
+		Select this option to build in host support for CDC/ECM serial
+		devices.
+
+config USBHOST_CDCECM_PACKET_PRINT
+	bool "Print raw CDC/ECM packets"
+	default n
+	depends on DEBUG_USB_INFO
+	---help---
+		Print all raw RX and TX packets send and received in the CDC/ECM driver.
+		This can be useful for analysing with programs such as wireshark.
+
+
 config USBHOST_CDCMBIM
 	bool "CDC/MBIM support"
 	default n

drivers/usbhost/Make.defs

@@ -48,6 +48,10 @@ ifeq ($(CONFIG_USBHOST_CDCACM),y)
 CSRCS += usbhost_cdcacm.c
 endif
 
+ifeq ($(CONFIG_USBHOST_CDCECM),y)
+CSRCS += usbhost_cdcecm.c
+endif
+
 ifeq ($(CONFIG_USBHOST_CDCMBIM),y)
 CSRCS += usbhost_cdcmbim.c
 endif