请教LWIP1.4.1连续工作一会儿没反应了

发布于 2018-05-30 16:48:21 浏览：2705 订阅该版

* 本帖最后由 geniusgogo 于 2018-5-30 16:50 编辑 *

我用stm32f207+lan8720a跑LWIP1.4.1协议栈。
设备端使用TCP client直连连接电脑后，电脑端主动周期10ms发送1024byte的数据。
设备端recv后send出来。工作一段时间后没有反应，recv也没有超时返回。
debug没有跟踪到LWIP哪里出问题，但是在底层eth驱动层是有正常rx中断的，只是eth_rx_thread_entry里面mbox已经send full了。
另外层打印的log看出问题前，几次的recv的size不太正常，因为正常的时候会recv的size=1024，而出问题前recv的size很零碎了，
并且**最后一次收到1byte后就没反应了**：
```recv 1024 bytes
send total:352067584 bytes, read total:352067584 bytes
recv 1024 bytes
send total:352068608 bytes, read total:352068608 bytes
recv 1024 bytes
send total:352069632 bytes, read total:352069632 bytes
recv 1024 bytes
send total:352070656 bytes, read total:352070656 bytes
recv 1024 bytes
send total:352071680 bytes, read total:352071680 bytes
recv 1024 bytes
send total:352072704 bytes, read total:352072704 bytes
recv 1024 bytes
send total:352073728 bytes, read total:352073728 bytes
recv 1024 bytes
send total:352074752 bytes, read total:352074752 bytes
recv 1024 bytes
send total:352075776 bytes, read total:352075776 bytes
recv 436 bytes
send total:352076212 bytes, read total:352076212 bytes
recv 588 bytes
send total:352076800 bytes, read total:352076800 bytes
recv 1024 bytes
send total:352077824 bytes, read total:352077824 bytes
recv 1024 bytes
send total:352078848 bytes, read total:352078848 bytes
recv 436 bytes
send total:352079284 bytes, read total:352079284 bytes
recv 588 bytes
send total:352079872 bytes, read total:352079872 bytes
recv 1024 bytes
send total:352080896 bytes, read total:352080896 bytes
recv 1024 bytes
send total:352081920 bytes, read total:352081920 bytes
recv 1024 bytes
send total:352082944 bytes, read total:352082944 bytes
recv 1024 bytes
send total:352083968 bytes, read total:352083968 bytes
recv 436 bytes
send total:352084404 bytes, read total:352084404 bytes
recv 588 bytes
send total:352084992 bytes, read total:352084992 bytes
recv 1024 bytes
send total:352086016 bytes, read total:352086016 bytes
recv 436 bytes
send total:352086452 bytes, read total:352086452 bytes
recv 588 bytes
send total:352087040 bytes, read total:352087040 bytes
recv 1024 bytes
send total:352088064 bytes, read total:352088064 bytes
recv 436 bytes
send total:352088500 bytes, read total:352088500 bytes
recv 588 bytes
send total:352089088 bytes, read total:352089088 bytes
recv 1 bytes
send total:352089089 bytes, read total:352089089 bytes
```
协议栈配置如下：
```/* light weight TCP/IP stack */

#define RT_USING_LWIP
#define RT_USING_LWIP141
#define RT_LWIP_ICMP

/* Static IPv4 Address */

#define RT_LWIP_IPADDR "192.168.1.30"
#define RT_LWIP_GWADDR "192.168.1.1"
#define RT_LWIP_MSKADDR "255.255.255.0"
#define RT_LWIP_UDP
#define RT_LWIP_TCP
#define RT_MEMP_NUM_NETCONN 2
#define RT_LWIP_PBUF_NUM 10
#define RT_LWIP_RAW_PCB_NUM 2
#define RT_LWIP_UDP_PCB_NUM 2
#define RT_LWIP_TCP_PCB_NUM 2
#define RT_LWIP_TCP_SEG_NUM 40
#define RT_LWIP_TCP_SND_BUF 8192
#define RT_LWIP_TCP_WND 8192
#define RT_LWIP_TCPTHREAD_PRIORITY 3
#define RT_LWIP_TCPTHREAD_MBOX_SIZE 4
#define RT_LWIP_TCPTHREAD_STACKSIZE 1024
#define RT_LWIP_ETHTHREAD_PRIORITY 5
#define RT_LWIP_ETHTHREAD_STACKSIZE 512
#define RT_LWIP_ETHTHREAD_MBOX_SIZE 4
#define LWIP_NETIF_STATUS_CALLBACK 1
#define SO_REUSE 0
#define LWIP_SO_RCVTIMEO 1
#define LWIP_SO_SNDTIMEO 1
#define LWIP_SO_RCVBUF 1
#define LWIP_NETIF_LOOPBACK 0```

tcp client代码如下：
```static void tcpclient_loopback(void)
{
    int sock;
    struct sockaddr_in server_addr;

static char r_buf[1024];
    int r_size;
    rt_size_t s_total = 0;
    rt_size_t r_total = 0;

rt_thread_delay(5 * RT_TICK_PER_SECOND);

server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(10003);
    server_addr.sin_addr.s_addr = inet_addr("192.168.1.100");
    rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));

while (1)
 {
 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 {
 rt_kprintf("Socket error ");

rt_thread_delay(RT_TICK_PER_SECOND);
            continue;
        }

if (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
 {
 rt_kprintf("**************************************** ");
 rt_kprintf("Connect fail! ");
 rt_kprintf("**************************************** ");

lwip_close(sock);

rt_thread_delay(RT_TICK_PER_SECOND);
            continue;
        }

rt_kputs("Connect successed ");
 int nNetTimeout = 5000; //5秒，
 //设置发送超时
 setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &nNetTimeout, sizeof(int));
 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &nNetTimeout, sizeof(int));

while (1)
 {
 r_size = recv(sock, r_buf, sizeof(r_buf), 0);
 rt_kprintf("recv %d bytes ", r_size);

if (r_size > 0)
            {
                r_total += r_size;
                r_size = send(sock, r_buf, r_size, 0);

if (r_size > 0)
 {
 s_total += r_size;
 rt_kprintf("send total:%u bytes, read total:%u bytes ", s_total, r_total);
 }
 else
 {
 rt_kprintf("send failure:%d, errcode:%d ", r_size, rt_get_errno());
 lwip_close(sock);
 break;
 }
 }
 else
 {
 rt_kprintf("recv failure:%d, errcode:%d ", r_size, rt_get_errno());
 lwip_close(sock);
 break;
 }
 }
 }

/* send data then close the connection */
    // send(sock, str, rt_strlen(str), 0);

lwip_close(sock);
}```

请教大神们指点一下！！！