06_netdev网卡设备内核模块

01_basicLinux内核模块-CSDN博客文章浏览阅读315次，点赞3次，收藏3次。环境ID=ubuntuMakefilemodules:clean:basic.creturn 0;运行效果。https://blog.csdn.net/m0_37132481/article/details/136157384my_netdev.c

#include <linux/kernel.h>
#include <linux/module.h>#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/skbuff.h>#define TAG "HELLO# "static int my_netdev_open(struct net_device *dev)
{printk(TAG "%s called\n", __func__);return 0;
}static int my_netdev_close(struct net_device *dev)
{printk(TAG "%s called\n", __func__);return 0;
}static netdev_tx_t my_netdev_start_xmit(struct sk_buff *skb, struct net_device *dev)
{printk(TAG "%s called\n", __func__);return NETDEV_TX_OK;
}
static int my_netdev_set_mac_add(struct net_device *dev, void *p)
{printk(TAG "%s called\n", __func__);return 0;
}static struct net_device_ops my_netdev_netdev_ops = {.ndo_open               = my_netdev_open,.ndo_stop               = my_netdev_close,.ndo_start_xmit         = my_netdev_start_xmit,.ndo_set_mac_address    = my_netdev_set_mac_add,.ndo_validate_addr      = eth_validate_addr,
};static struct net_device *dev = NULL;static int my_netdev_init(void)
{printk(TAG "%s called\n", __func__);dev = alloc_etherdev(0);dev->dev_addr_shadow[0] = 0xaa;dev->dev_addr_shadow[1] = 0xbb;dev->dev_addr_shadow[2] = 0xcc;dev->dev_addr_shadow[3] = 0xdd;dev->dev_addr_shadow[4] = 0xee;dev->dev_addr_shadow[5] = 0xff;dev->dev_addr = dev->dev_addr_shadow;snprintf(dev->name, IFNAMSIZ, "hello");dev->netdev_ops = &my_netdev_netdev_ops;register_netdev(dev);return 0;
}
static void my_netdev_exit(void)
{unregister_netdev(dev);free_netdev(dev);printk(TAG "%s called\n", __func__);
}module_init(my_netdev_init);
module_exit(my_netdev_exit);
MODULE_LICENSE("GPL");

效果