LWIP怎么重新设置ip
本帖最后由 u010351290 于 2013-06-19 11:35:23 编辑 我的板子是作为服务器的程序，移植的lwip 我想能够在程序运行过程中重新修改服务器自身的ip地址，可是试了几次还是不行，首先我直接把程序中的 IP4_ADDR(&ipaddr, 192, 168, 1, 18); //设置网络接口的ip地址
IP4_ADDR(&netmask, 255, 255, 255, 0);//子网掩码
IP4_ADDR(&gw, 192, 168, 1, 1);//网关
IP改了，然后 执行tcp_close(iris_pcb);
然后再执行LwIP_Init();
CMD_init();
结果作为client的PC根本就没办法再连上作为服务器的板子了（不管是新设的ip还是以前老的IP）。请各位大虾指点迷津 O(∩_∩)O谢谢
下面是两个函数的具体代码：
void LwIP_Init( void )
{
struct ip_addr ipaddr;
struct ip_addr netmask;
struct ip_addr gw;
/*调用LWIP初始化函数，
初始化网络接口结构体链表、内存池、pbuf结构体*/
lwip_init();
#if LWIP_DHCP //若使用DHCP协议
ipaddr.addr = 0;
netmask.addr = 0;
gw.addr = 0;
#else//
/*//by iris 2013.6.6//
IP4_ADDR(&ipaddr, 192, 168, 0, 18); //设置网络接口的ip地址
IP4_ADDR(&netmask, 255, 255, 255, 0);//子网掩码
IP4_ADDR(&gw, 192, 168, 0, 1);//网关
*///by iris 2013.6.6//
IP4_ADDR(&ipaddr, 192, 168, 1, 18); //设置网络接口的ip地址
IP4_ADDR(&netmask, 255, 255, 255, 0);//子网掩码
IP4_ADDR(&gw, 192, 168, 1, 1);//网关
#endif
/*初始化enc28j60与LWIP的接口，参数为网络接口结构体、ip地址、
子网掩码、网关、网卡信息指针、初始化函数、输入函数*/
netif_add(&enc28j60, &ipaddr, &netmask, &gw, NULL, ðernetif_init, ðernet_input);
/*把enc28j60设置为默认网卡 .*/
netif_set_default(&enc28j60);
#if LWIP_DHCP //若使用了DHCP
/* Creates a new DHCP client for this interface on the first call.
Note: you must call dhcp_fine_tmr() and dhcp_coarse_tmr() at
the predefined regular intervals after starting the client.
You can peek in the netif->dhcp struct for the actual DHCP status.*/
dhcp_start(&enc28j60); //启动DHCP
#endif
/* When the netif is fully configured this function must be called.*/
netif_set_up(&enc28j60); //使能enc28j60接口
}
struct tcp_pcb *pcb;//定义一个tcp控制块
/* Create a new TCP control block */
pcb = tcp_new(); //给tcp控制块分配内存空间
/* Assign to the new pcb a local IP address and a port number */
/* Using IP_ADDR_ANY allow the pcb to be used by any local interface */
tcp_bind(pcb, IP_ADDR_ANY, 23); //把PCB控制块绑定到本机的所有IP地址，端口为23
/* Set the connection to the LISTEN state */
pcb = tcp_listen(pcb); //监听该端口
/* Specify the function to be called when a connection is established */
tcp_accept(pcb, CMD_accept); //监听的端口接通后调用的函数HelloWorld_accept
iris_pcb=pcb; //the mathod is wrong //by iris 2013.6.3
}
STM32 移植 服务器 lwip
[解决办法]
借花献佛：luminary的lwip接口处理：位于lwiplib.c文件中，摘取出对你有用的部分，实测过没有任何问题
//*****************************************************************************
//
//! Change the configuration of the lwIP network interface.
//!
//! \param ulIPAddr is the new IP address to be used (static).
//! \param ulNetMask is the new network mask to be used (static).
//! \param ulGWAddr is the new Gateway address to be used (static).
//! \param ulIPMode is the IP Address Mode. \b IPADDR_USE_STATIC 0 will force
//! static IP addressing to be used, \b IPADDR_USE_DHCP will force DHCP with
//! fallback to Link Local (Auto IP), while \b IPADDR_USE_AUTOIP will force
//! Link Local only.
//!
//! This function will evaluate the new configuration data. If necessary, the
//! interface will be brought down, reconfigured, and then brought back up
//! with the new configuration.
//!
//! \return None.
//
//*****************************************************************************
void
lwIPNetworkConfigChange(unsigned long ulIPAddr, unsigned long ulNetMask,
unsigned long ulGWAddr, unsigned long ulIPMode)
{
//
// Check the parameters.
//
#if LWIP_DHCP && LWIP_AUTOIP
ASSERT((ulIPMode == IPADDR_USE_STATIC)
[解决办法]
(ulIPMode == IPADDR_USE_DHCP)
[解决办法]
(ulIPMode == IPADDR_USE_AUTOIP));
#elif LWIP_DHCP
ASSERT((ulIPMode == IPADDR_USE_STATIC)
[解决办法]
(ulIPMode == IPADDR_USE_DHCP));
#elif LWIP_AUTOIP
ASSERT((ulIPMode == IPADDR_USE_STATIC)
[解决办法]
(ulIPMode == IPADDR_USE_AUTOIP));
#else
ASSERT(ulIPMode == IPADDR_USE_STATIC);
#endif
//
// Save the network configuration for later use by the private network
// configuration change.
//
g_ulIPAddr = ulIPAddr;
g_ulNetMask = ulNetMask;
g_ulGWAddr = ulGWAddr;
//
// Complete the network configuration change. The remainder is done
// immediately if not using a RTOS and it is deferred to the TCP/IP
// thread's context if using a RTOS.
//
#if NO_SYS
lwIPPrivateNetworkConfigChange((void *)ulIPMode);
#else
tcpip_callback(lwIPPrivateNetworkConfigChange, (void *)ulIPMode);
#endif
}
//*****************************************************************************
//
// Completes the network configuration change. This is directly called when
// not using a RTOS and provided as a callback to the TCP/IP thread when using
// a RTOS.
//
//*****************************************************************************
static void
lwIPPrivateNetworkConfigChange(void *pvArg)
{
unsigned long ulIPMode;
struct ip_addr ip_addr;
struct ip_addr net_mask;
struct ip_addr gw_addr;
//
// Get the new address mode.
//
ulIPMode = (unsigned long)pvArg;
//
// Setup the network address values.
//
if(ulIPMode == IPADDR_USE_STATIC)
{
ip_addr.addr = htonl(g_ulIPAddr);
net_mask.addr = htonl(g_ulNetMask);
gw_addr.addr = htonl(g_ulGWAddr);
}
#if LWIP_DHCP
[解决办法]
LWIP_AUTOIP
else
{
ip_addr.addr = 0;
net_mask.addr = 0;
gw_addr.addr = 0;
}
#endif
//
// Switch on the current IP Address Aquisition mode.
//
switch(g_ulIPMode)
{
//
// Static IP
//
case IPADDR_USE_STATIC:
{
//
// Set the new address parameters. This will change the address
// configuration in lwIP, and if necessary, will reset any links
// that are active. This is valid for all three modes.
//
netif_set_addr(&g_sNetIF, &ip_addr, &net_mask, &gw_addr);
//
// If we are going to DHCP mode, then start the DHCP server now.
//
#if LWIP_DHCP
if(ulIPMode == IPADDR_USE_DHCP)
{
dhcp_start(&g_sNetIF);
}
#endif
//
// If we are going to AutoIP mode, then start the AutoIP process
// now.
//
#if LWIP_AUTOIP
if(ulIPMode == IPADDR_USE_AUTOIP)
{
autoip_start(&g_sNetIF);
}
#endif
//
// And we're done.
//
break;
}
//
// DHCP (with AutoIP fallback).
//
#if LWIP_DHCP
case IPADDR_USE_DHCP:
{
//
// If we are going to static IP addressing, then disable DHCP and
// force the new static IP address.
//
if(ulIPMode == IPADDR_USE_STATIC)
{
dhcp_stop(&g_sNetIF);
netif_set_addr(&g_sNetIF, &ip_addr, &net_mask, &gw_addr);
}
//
// If we are going to AUTO IP addressing, then disable DHCP, set
// the default addresses, and start AutoIP.
//
#if LWIP_AUTOIP
else if(ulIPMode == IPADDR_USE_AUTOIP)
{
dhcp_stop(&g_sNetIF);
netif_set_addr(&g_sNetIF, &ip_addr, &net_mask, &gw_addr);
autoip_start(&g_sNetIF);
}
#endif
break;
}
#endif
//
// AUTOIP
//
#if LWIP_AUTOIP
case IPADDR_USE_AUTOIP:
{
//
// If we are going to static IP addressing, then disable AutoIP and
// force the new static IP address.
//
if(ulIPMode == IPADDR_USE_STATIC)
{
autoip_stop(&g_sNetIF);
netif_set_addr(&g_sNetIF, &ip_addr, &net_mask, &gw_addr);
}
//
// If we are going to DHCP addressing, then disable AutoIP, set the
// default addresses, and start dhcp.
//
#if LWIP_DHCP
else if(ulIPMode == IPADDR_USE_DHCP)
{
autoip_stop(&g_sNetIF);
netif_set_addr(&g_sNetIF, &ip_addr, &net_mask, &gw_addr);
dhcp_start(&g_sNetIF);
}
#endif
break;
}
#endif
}
//
// Save the new mode.
//
g_ulIPMode = ulIPMode;
}
