Is usbnet the driver of the wireless network card?

Whether USB net is the driver of the wireless network adapter-general Linux technology-Linux programming and kernel information. The following is a detailed description. Recently, I saw an article on Linux kernel and driver programming on the Internet about writing a usb net driver to see if it is a driver for a usb wireless Nic! Your network adapter cannot be used in linux. I would like to ask if the experts are even struggling to drive the compilation process!
It is roughly like this:
I. Implementation of the simulated USB flash drive in linux
Add code to the kernel
# Include
# Include
# Include

Modify arch/arm/mach-s3c2410/mach-smdk2410.c

/* Handle the pull-up resistor of the USB device */
Static void smdk2410_udc_pullup (enum s3c2410_udc_1__e cmd)
{
U8 * s3c2410_pullup_info [] = {
"",
"Pull-up enable ",
"Pull-up disable ",
"UDC reset, in case"
};
Printk ("smdk2410_udc: % s \ n", s3c2410_pullup_info [cmd]);
S3c2410_gpio_cfgpin (S3C2410_GPG9, S3C2410_GPG9_OUTP );
Switch (cmd)
{
Case S3C2410_UDC_P_ENABLE:

S3c2410_gpio_setpin (S3C2410_GPG9, 1); // set gpg9 output HIGH
Break;
Case S3C2410_UDC_P_DISABLE:
S3c2410_gpio_setpin (S3C2410_GPG9, 0); // set gpg9 output LOW
Break;
Case S3C2410_UDC_P_RESET:
// FIXME !!!
Break;
Default:
Break;
}
}

Static struct s3c2410_udc_mach_info smdk2410_udc_cfg _ initdata = {
. Udc_command = smdk2410_udc_pullup,
};

Static struct platform_device * smdk2410_devices [] _ initdata = {
...,
& Initi_device_usbgadget,/* register a USB gadget device */
};

Static void _ init sdmk2410_init (void)
{
U32 upll_value;
Set_s3c2410fb_info (& smdk2410_lcdcfg );
S3c24xx_udc_set_platdata (& smdk2410_udc_cfg);/* initialize */
Initi_device_sdi.dev.platform_data = & smdk2410_mmc_cfg;
/* Turn off suspend on both USB ports, and switch
* Selectable USB port to USB device mode .*/
S3c2410_modify_miscr (S3C2410_MISCCR_USBHOST |
S3C2410_MISCCR_USBSUSPND0 |
S3C2410_MISCCR_USBSUSPND1, 0x0 );
/* Set the USB clock */
Upll_value = (
0x78 <S3C2410_PLLCON_MDIVSHIFT)
| (0x02 <S3C2410_PLLCON_PDIVSHIFT)
| (0x03 <S3C2410_PLLCON_SDIVSHIFT );
While (upll_value! = Readl (S3C2410_UPLLCON )){
Writel (upll_value, S3C2410_UPLLCON );
Udelay (20 );
}
}
Modify drivers/usb/gadget/file_storage.c
Static void start_transfer (struct fsg_dev * fsg, struct usb_ep * ep,
Struct usb_request * req, int * pbusy,
Enum fsg_buffer_state * state)
{
Int rc;
Udelay (800 );
......
}
Configure the kernel to support U disk Simulation
<*> USB Gadget Support --->
USB Peripheral Controller (S3C2410 USB Device Controller) --->
S3C2410 USB Device Controller

S3C2410 udc debug messages
USB Gadget Drivers
File-backed Storage Gadget
3. Compile the kernel
# Make zImage
# Make modules
G_file_storage.ko is generated under the drivers/usb/gadget directory.
Load drivers and test functions
Use the previous kernel to start the system and load g_file_storage.ko
# Insmod g_file_storage.ko
# Insmod g_file_storage.ko file =/dev/mtdblock2 stall = 0 removable = 1
0.03 USB: usb_gadget_register_driver () 'G _ file_storage'
0.04 USB: binding gadget driver 'G _ file_storage'
0.05 USB: s3c2410_set_selfpowered ()
G_file_storage gadget: File-backed Storage Gadget, version: 20 October 2004
G_file_storage gadget: Number of LUNs = 1
G_file_storage gadget-lun0: ro = 0, file:/dev/mtdblock3
0.06 USB: udc_enable called
Smdk2410_udc: Pull-up enable
Connect the device to windows. windows automatically adds the device to a new USB flash drive. Format the USB flash drive and save it to the file. After detaching a USB flash drive, perform the following operations on the target board:
# Mkdir/mnt/gadget
# Mount-t vfat/dev/mtdblock2/mnt/gadget/
# Ls
You can see the files stored in the USB flash drive in windows.
II. Implementation of USB net functions
Configure the kernel to support USB net
<*> USB Gadget Support --->
USB Peripheral Controller (S3C2410 USB Device Controller) --->
S3C2410 USB Device Controller

S3C2410 udc debug messages
USB Gadget Drivers
Ethernet Gadget (with CDC Ethernet support)

RNDIS support
2. Compile the kernel
# Make zImage
# Make modules
Generate g_ether.ko under the drivers/usb/gadget directory
3. Load the driver and test the function.
Use the previous kernel to start the system and load g_ether.ko.
# Insmod g_ether.ko
# Ifconfig usb0 192.168.1.120
......
Usb0 Link encap: Ethernet HWaddr 5E: C5: F6: D4: 2B: 91
Inet addr: 192.168.1.120 Bcast: 192.168.1.255 Mask: 255.255.255.0
Up broadcast running multicast mtu: 1500 Metric: 1
RX packets: 253 errors: 0 dropped: 0 overruns: 0 frame: 0
TX packets: 43 errors: 0 dropped: 0 overruns: 0 carrier: 0
Collisions: 0 FIG: 1000
RX bytes: 35277 (34.4 KiB) TX bytes: 10152 (9.9 KiB)

Please help me solve the problem!