5 rtthread（4.01）+lwip（2.03）主动下发ping问题

发布于 2023-08-15 10:27:06 浏览：461 订阅该版

WKJay 认证专家 2023-08-15

wkjay.com

阿尔法 2023-08-15

这家伙很懒，什么也没写！

```
int netdev_cmd_ping(char* target_name, rt_uint32_t times, rt_size_t size, char *netdev_name)
{
#define NETDEV_PING_DATA_SIZE       32
/** ping receive timeout - in milliseconds */
#define NETDEV_PING_RECV_TIMEO      (2 * RT_TICK_PER_SECOND)
/** ping delay - in milliseconds */
#define NETDEV_PING_DELAY           (1 * RT_TICK_PER_SECOND)
/* check netdev ping options */
#define NETDEV_PING_IS_COMMONICABLE(netdev) \
    ((netdev) && (netdev)->ops && (netdev)->ops->ping && \
        netdev_is_up(netdev) && netdev_is_link_up(netdev)) \
    struct netdev *netdev = RT_NULL;
    struct netdev_ping_resp ping_resp;
    int index, ret = 0;
    if (size == 0)
    {
        size = NETDEV_PING_DATA_SIZE;
    }
    if (netdev_name != RT_NULL)
    {
        netdev = netdev_get_by_name(netdev_name);
        if (netdev == RT_NULL)
        {
            rt_kprintf("ping: not found network interface device, using default.\n");
            netdev = netdev_default;
        }
    }
    if (!NETDEV_PING_IS_COMMONICABLE(netdev))
    {
        /* using first internet up status network interface device */
        netdev = netdev_get_first_by_flags(NETDEV_FLAG_LINK_UP);
        if (netdev == RT_NULL)
        {
            rt_kprintf("ping: not found available network interface device.\n");
            return -RT_ERROR;
        }
        else if (netdev->ops == RT_NULL || netdev->ops->ping == RT_NULL)
        {
            rt_kprintf("ping: network interface device(%s) not support ping feature.\n", netdev->name);
            return -RT_ERROR;
        }
        else if (!netdev_is_up(netdev) || !netdev_is_link_up(netdev))
        {
            rt_kprintf("ping: network interface device(%s) status error.\n", netdev->name);
            return -RT_ERROR;
        }
    }
    rt_kprintf("network interface: %s\r\n", netdev->name);
    for (index = 0; index < times; index++)
    {
        int delay_tick = 0;
        rt_tick_t start_tick = 0;
        rt_memset(&ping_resp, 0x00, sizeof(struct netdev_ping_resp));
        start_tick = rt_tick_get();
        ret = netdev->ops->ping(netdev, (const char *)target_name, size, NETDEV_PING_RECV_TIMEO, &ping_resp);
        if (ret == -RT_ETIMEOUT)
        {
            rt_kprintf("ping: from %s icmp_seq=%d timeout\n",
                (ip_addr_isany(&(ping_resp.ip_addr))) ? target_name : inet_ntoa(ping_resp.ip_addr), index);
        }
        else if (ret == -RT_ERROR)
        {
            rt_kprintf("ping: unknown %s %s\n",
                (ip_addr_isany(&(ping_resp.ip_addr))) ? "host" : "address",
                    (ip_addr_isany(&(ping_resp.ip_addr))) ? target_name : inet_ntoa(ping_resp.ip_addr));
        }
        else
        {
            if (ping_resp.ttl == 0)
            {
                rt_kprintf("%d bytes from %s icmp_seq=%d time=%d ms\n",
                            ping_resp.data_len, inet_ntoa(ping_resp.ip_addr), index, ping_resp.ticks);
            }
            else
            {
                rt_kprintf("%d bytes from %s icmp_seq=%d ttl=%d time=%d ms\n",
                            ping_resp.data_len, inet_ntoa(ping_resp.ip_addr), index, ping_resp.ttl, ping_resp.ticks);
            }
        }
        /* if the response time is more than NETDEV_PING_DELAY, no need to delay */
        delay_tick = ((rt_tick_get() - start_tick) > NETDEV_PING_DELAY) || (index == times) ? 0 : NETDEV_PING_DELAY;
        rt_thread_delay(delay_tick);
    }
    return RT_EOK;
}
```

谢谢 这里第53行`rt_memset(&ping_resp, 0x00, sizeof(struct netdev_ping_resp));`怎么把IP地址信息给清除了，的需要在改动田间 IP信息吧，