瑞昱(RTL8168/8111/8112)是一种集成了千兆以太网控制器的芯片组，常用于主板、网卡、路由器等设备中。它提供了快速和稳定的网络连接，适用于各种场景下的数据传输。
以下是用于驱动RTL8168/8111/8112的详细代码说明，包括初始化、发送数据、接收数据等功能：
1. 初始化RTL8168/8111/8112芯片：
```c
#include
#include
#include
static int __init rtl_init(void)
{
struct net_device *netdev;
struct pci_dev *pdev;
pdev = pci_get_device(VENDOR_ID
DEVICE_ID
NULL);
if (!pdev) {
printk(KERN_INFO "RTL8168/8111/8112 not found\n");
return -ENODEV;
}
netdev = alloc_etherdev(sizeof(struct rtl8168_priv));
if (!netdev) {
printk(KERN_INFO "Failed to allocate net_device\n");
return -ENOMEM;
}
rtl8168_init(netdev
pdev);
return 0;
}
static void __exit rtl_exit(void)
{
struct net_device *netdev;
rtl8168_cleanup(netdev);
free_netdev(netdev);
}
module_init(rtl_init);
module_exit(rtl_exit);
```
2. 发送数据：
```c
static netdev_tx_t rtl8168_start_xmit(struct sk_buff *skb
struct net_device *netdev)
{
struct rtl8168_priv *tp = netdev_priv(netdev);
unsigned int entry;
entry = rtl8168_get_tx_entry(tp);
if (!entry)
return NETDEV_TX_BUSY;
spin_lock_irq(&tp->tx_lock);
rtl8168_write_tx_desc(tp
entry
skb);
spin_unlock_irq(&tp->tx_lock);
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
```
3. 接收数据：
```c
static irqreturn_t rtl8168_interrupt(int irq
void *dev_id)
{
struct rtl8168_priv *tp = dev_id;
while (rtl8168_rx_poll(tp) > 0);
return IRQ_HANDLED;
}
```
