- 1 year ago
Difference between USB CDC EEM protocol implementations in Win10 (usbnet.sys) and Linux kernel (cdc_eem.c)
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The USB CDC EEM (Ethernet Emulation Model) protocol implementations in Windows 10 (usbnet.sys) and the Linux kernel (cdc_eem.c) are designed to provide Ethernet-like communication over USB connections. While they serve the same purpose, there are some differences in their implementation and functionality:
Platform-specific Drivers:
- Windows 10: The USB CDC EEM protocol implementation in Windows 10 is provided by the
usbnet.sys
driver. It is part of the Windows USB networking subsystem and is responsible for handling USB communications and Ethernet emulation. - Linux Kernel: The CDC EEM protocol implementation in the Linux kernel is handled by the
cdc_eem.c
driver. It is part of the kernel's USB gadget framework and enables Ethernet over USB functionality.
- Windows 10: The USB CDC EEM protocol implementation in Windows 10 is provided by the
Driver Architecture:
- Windows 10: The
usbnet.sys
driver follows the Windows Driver Model (WDM) architecture and integrates with the Windows USB stack. It provides a standardized interface for USB networking devices. - Linux Kernel: The
cdc_eem.c
driver is part of the Linux kernel's USB gadget framework. It operates within the Linux kernel's networking subsystem and implements the necessary functionality for Ethernet emulation.
- Windows 10: The
Configuration and Management:
- Windows 10: The
usbnet.sys
driver in Windows 10 typically requires configuration through the Windows Device Manager or other management interfaces provided by the operating system. Windows-specific tools and APIs can be used to manage and monitor USB networking devices. - Linux Kernel: The
cdc_eem.c
driver in the Linux kernel can be configured through the Linux network stack, using tools such asifconfig
orip
. It integrates with the Linux networking infrastructure and can be managed using standard Linux network management utilities.
- Windows 10: The
Compatibility and Support:
- Windows 10: The
usbnet.sys
driver is specifically designed for Windows operating systems, providing compatibility and support for USB CDC EEM devices on the Windows platform. - Linux Kernel: The
cdc_eem.c
driver is part of the Linux kernel and supports USB CDC EEM devices on Linux-based systems.
- Windows 10: The
While both implementations aim to provide Ethernet-like communication over USB, the specific details and functionality may vary based on the operating system and the driver implementation. It's important to consider these differences when developing or working with USB CDC EEM devices on Windows 10 or Linux.