嵌入式linux的wifi驱动开发解析

#include <linux/module.h>
#include <linux/wireless.h>

static int __init wifi_init(void) {
    struct net_device *dev;
    // 初始化WiFi硬件
    if (wifi_hardware_init() < 0) {
        printk(KERN_ERR "Failed to initialize WiFi hardware\n");
        return -ENODEV;
    }
    // 注册网络设备
    dev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, ether_setup);
    if (!dev) {
        printk(KERN_ERR "Failed to allocate network device\n");
        return -ENOMEM;
    }
    // 设置网络设备操作函数
    dev->netdev_ops = &wifi_netdev_ops;
    // 注册网络设备到内核
    if (register_netdev(dev) < 0) {
        printk(KERN_ERR "Failed to register network device\n");
        free_netdev(dev);
        return -EIO;
    }
    printk(KERN_INFO "WiFi device registered successfully\n");
    return 0;
}

static void __exit wifi_exit(void) {
    // 注销网络设备
    unregister_netdev(wifi_dev);
    // 释放资源
    free_netdev(wifi_dev);
    // 关闭WiFi硬件
    wifi_hardware_deinit();
    printk(KERN_INFO "WiFi device unregistered successfully\n");
}

module_init(wifi_init);
module_exit(wifi_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("Embedded Linux WiFi Driver");