C++ (Cpp) etharp_find_addrの例

コード例 #1

ファイル: netxface.c プロジェクト: jblack547/openacn

int
netx_send_to(
    struct netxsocket_s *rlpsock,
    const netx_addr_t *destaddr,
    uint8_t *data,
    size_t datalen
)
{
    struct pbuf     *pkt;  /* Outgoing packet */
    struct eth_addr *ethaddr_ret;
    struct ip_addr  *ipaddr_ret;
    int              result;
    int              t_begin;
    struct ip_addr   dest_addr;
    ip4addr_t        addr;
    int              arp_index;

    if (!rlpsock || !rlpsock->nativesock)
        return -1;

    /* struct ip_addr *ipaddr, */
    addr = NETI_INADDR(destaddr);
    dest_addr.addr = addr;

    if (!is_multicast(addr)) {
        /* We have the arp queue turned off, so we need to make sure we have a ARP entry  */
        /* else it will fail on first try */
        result = -1;
        arp_index = etharp_find_addr(netxf_default, &dest_addr, &ethaddr_ret, &ipaddr_ret);
        if (arp_index < 0) {
            result = etharp_query(netxf_default, &dest_addr, NULL);
            if (result == ERR_OK) {
                result = -1;
                t_begin = sys_jiffies();
                /* wait 2 seconds (ARP TIMEOUT)*/
                while ((unsigned int)sys_jiffies() - t_begin < 2000) {
                    arp_index = etharp_find_addr(netxf_default, &dest_addr, &ethaddr_ret, &ipaddr_ret);
                    if (arp_index >= 0) {
                        result = 0;
                        break;
                    }
                }
            } else {
                acnlog(LOG_WARNING | LOG_NETI, "netx_send_to : ARP query failure");
                return -1;
            }
        } else
            result = 0;

        if (result != 0) {
            acnlog(LOG_WARNING | LOG_NETI, "netx_send_to : ARP failure: %d.%d.%d.%d",
                   ntohl(addr) >> 24 & 0x000000ff,
                   ntohl(addr) >> 16 & 0x000000ff,
                   ntohl(addr) >> 8 & 0x000000ff,
                   ntohl(addr) & 0x000000ff);
            return result;
        }

コード例 #2

ファイル: ipal_arp.c プロジェクト: Tarintote/icub-firmware

extern ipal_result_t ipal_arp_request(ipal_ipv4addr_t ip, ipal_arp_cachemode_t cm)
{
    int8_t ret;
    err_t err;
    ipal_eth_hid_netif * netif_ptr;
    struct ip_addr ipaddr;
    struct eth_addr *eth_ret;
    struct ip_addr  *ip_ret;
    
    
#warning: arp cache mode useless
    //in lwip i can not found something similar to cachemode.
    
    if(0 == ipal_sys_hid_started)
    {
        return(ipal_res_NOK_generic);
    }

    ipaddr.addr = ipal2lwip_ipv4addr(ip);
    
    ipal_base_hid_threadsafety_lock();

    netif_ptr = ipal_eth_hid_getnetif();
    ret = etharp_find_addr(&(netif_ptr->netif), &ipaddr, &eth_ret, &ip_ret);
    if(ret != -1 )
    {
        //ip addr presente in arp tbl, allora ritorno con sucesso
        ipal_base_hid_threadsafety_unlock();
        return(ipal_res_OK);
    }
      
    //se sopno qui ==> ip addr non presente in tbl arp ==> faccio una request
    err = etharp_request(&(netif_ptr->netif), &ipaddr);
    
    ipal_base_hid_threadsafety_unlock();

    return( (ERR_OK == err) ? (ipal_res_OK) : (ipal_res_NOK_generic) );
    //se sono qui vuol dire che devoi fare una arp request e che quindi la mia arp table non contiene ancora nessuna entry relatina a @ip
    //return(ipal_res_NOK_generic);
}