C++ (Cpp) fnet_arp_request Examples

Example #1

File: fnet_eth.c Project: EdizonTN/ARM-FNET-LPC-1788-SK-1

/************************************************************************
* NAME: fnet_eth_change_addr_notify
*
* DESCRIPTION:  This function is called on IP address change.
*               It issues a gratuitous ARP request.
*************************************************************************/
void fnet_eth_change_addr_notify(fnet_netif_t *netif)
{
#if FNET_CFG_IP4
fnet_printf("ETH - Change IP4 to: %x\n", netif->ip4_addr.address);

    if(netif->ip4_addr.address)
    	fnet_arp_request(netif, netif->ip4_addr.address); /* Gratuitous ARP request.*/
#else
    FNET_COMP_UNUSED_ARG(netif);
#endif /* FNET_CFG_IP4 */   
}

Example #2

File: fnet_arp.c Project: SoFiHa/twrk60_fnet_test

/************************************************************************
* NAME: fnet_arp_send_request
*
* DESCRIPTION: Public function. Sends ARP request.
*************************************************************************/
void fnet_arp_send_request( fnet_netif_desc_t netif_desc, fnet_ip4_addr_t ip_addr )
{
    fnet_netif_t    *netif = (fnet_netif_t *)netif_desc;
    fnet_arp_if_t   *arpif;

    if(netif)
    {
        arpif = netif->arp_if_ptr;
        if(arpif)
        {
            fnet_isr_lock();

            fnet_arp_request(netif, ip_addr);

            fnet_isr_unlock();
        }
    }
}

Example #3

File: fnet_arp.c Project: SoFiHa/twrk60_fnet_test

/************************************************************************
* NAME: fnet_arp_resolve
*
* DESCRIPTION: This function finds the first unused or the oldest
*              ARP table entry and makes a new entry
*              to prepare it for an ARP reply.
*************************************************************************/
void fnet_arp_resolve(fnet_netif_t *netif, fnet_ip4_addr_t ipaddr, fnet_netbuf_t *nb)
{
    fnet_arp_if_t       *arpif = netif->arp_if_ptr;
    fnet_index_t        i;
    fnet_arp_entry_t    *entry;

    fnet_isr_lock();
    for (i = 0U; i < FNET_CFG_ARP_TABLE_SIZE; i++)
    {
        if (ipaddr == arpif->arp_table[i].prot_addr)
        {
            break;
        }
    }

    /* If no unused entry is found, create it. */
    if (i == FNET_CFG_ARP_TABLE_SIZE)
    {
        entry = fnet_arp_add_entry(netif, ipaddr, fnet_eth_null_addr);
    }
    else
    {
        entry = &arpif->arp_table[i];
    }

    if (entry->hold)
    {
        fnet_netbuf_free_chain(entry->hold);
        entry->hold = NULL;
    }

    if ((i == FNET_CFG_ARP_TABLE_SIZE) || ((entry->hold) && (((fnet_timer_ticks() - entry->hold_time) * FNET_TIMER_PERIOD_MS) > 1000U)) || (!entry->hold))
    {
        entry->hold_time = fnet_timer_ticks();
        entry->hold = nb;
        fnet_arp_request(netif, ipaddr);
    }
    else
    {
        entry->hold = nb;
    }
    fnet_isr_unlock();
}

Example #4

File: fnet_arp.c Project: EdizonTN/ARM-FNET-LPC-1788-SK-1

/************************************************************************
* NAME: fnet_arp_resolve
*
* DESCRIPTION: This function finds the first unused or the oldest
*              ARP table entry and makes a new entry
*              to prepare it for an ARP reply.
*************************************************************************/
void fnet_arp_resolve( fnet_netif_t *netif, fnet_ip4_addr_t ipaddr, fnet_netbuf_t *nb )
{
    fnet_arp_if_t *arpif = &(((fnet_eth_if_t *)(netif->if_ptr))->arp_if); //PFI
    int i;
    fnet_arp_entry_t *entry;

    for (i = 0; i < FNET_ARP_TABLE_SIZE; i++)
    {
        if(ipaddr == arpif->arp_table[i].prot_addr)
        {
            break;
        }
    }

    /* If no unused entry is found, create it. */
    if(i == FNET_ARP_TABLE_SIZE)
        entry = fnet_arp_add_entry(netif, ipaddr, fnet_eth_null_addr);
    else
        entry = &arpif->arp_table[i];

    if(entry->hold)
    {
        fnet_netbuf_free_chain(entry->hold);
    }

    if((i == FNET_ARP_TABLE_SIZE)||
        ((entry->hold)&&(((fnet_timer_ticks()-entry->hold_time)*FNET_TIMER_PERIOD_MS)>1000))||
        (!entry->hold))
    {
        entry->hold_time = fnet_timer_ticks();
        entry->hold = nb;
        fnet_arp_request(netif, ipaddr);
    }
    else
        entry->hold = nb;
}