Function lwip_netdev_ping

components/net/lwip/port/ethernetif.c:213–295

extern err_t lwip_ping_send(int s, ip_addr_t *addr, int size);

int lwip_netdev_ping(struct netdev *netif, const char *host, size_t data_len,
                        uint32_t timeout, struct netdev_ping_resp *ping_resp, rt_bool_t isbind)
{
    int s, ttl, recv_len, result = 0;
    int elapsed_time;
    rt_tick_t recv_start_tick;
#if LWIP_VERSION_MAJOR == 1U /* v1.x */
    int recv_timeout = timeout;
#else /* >= v2.x */
    struct timeval recv_timeout = { timeout / 1000UL, timeout % 1000UL * 1000 };
#endif
    ip_addr_t target_addr;
    struct addrinfo hint, *res = RT_NULL;
    struct sockaddr_in *h = RT_NULL;
    struct in_addr ina;
    struct sockaddr_in local;

    RT_ASSERT(netif);
    RT_ASSERT(host);
    RT_ASSERT(ping_resp);

    rt_memset(&hint, 0x00, sizeof(hint));
    /* convert URL to IP */
    if (lwip_getaddrinfo(host, RT_NULL, &hint, &res) != 0)
    {
        return -RT_ERROR;
    }
    SMEMCPY(&h, &res->ai_addr, sizeof(struct sockaddr_in *));
    SMEMCPY(&ina, &h->sin_addr, sizeof(ina));
    lwip_freeaddrinfo(res);
    if (inet_aton(inet_ntoa(ina), &target_addr) == 0)
    {
        return -RT_ERROR;
    }
    SMEMCPY(&(ping_resp->ip_addr), &target_addr, sizeof(ip_addr_t));

    /* new a socket */
    if ((s = lwip_socket(AF_INET, SOCK_RAW, IP_PROTO_ICMP)) < 0)
    {
        return -RT_ERROR;
    }

    local.sin_len = sizeof(local);
    local.sin_family = AF_INET;
    local.sin_port = 0;
#ifndef NETDEV_USING_IPV6
    local.sin_addr.s_addr = (netif->ip_addr.addr);
#else
    local.sin_addr.s_addr = (netif->ip_addr.u_addr.ip4.addr);
#endif
    if (isbind) {
        lwip_bind(s, (struct sockaddr *)&local, sizeof(struct sockaddr_in));
    }

    lwip_setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &recv_timeout, sizeof(recv_timeout));

    if (lwip_ping_send(s, &target_addr, data_len) == ERR_OK)
    {