C++ (Cpp) pico_arp_reverse_lookupの例

コード例 #1

ファイル: pico_dhcp_server.c プロジェクト: AustinHunting/picotcp

static inline void dhcp_negotiation_set_ciaddr(struct pico_dhcp_server_negotiation *dhcpn)
{
    struct pico_ip4 *ciaddr = NULL;
    ciaddr = pico_arp_reverse_lookup(&dhcpn->hwaddr);
    if (!ciaddr) {
        dhcpn->ciaddr.addr = dhcpn->dhcps->pool_next;
        dhcpn->dhcps->pool_next = long_be(long_be(dhcpn->dhcps->pool_next) + 1);
        pico_arp_create_entry(dhcpn->hwaddr.addr, dhcpn->ciaddr, dhcpn->dhcps->dev);
    } else {
        dhcpn->ciaddr = *ciaddr;
    }
}

コード例 #2

ファイル: pico_dhcp_server.c プロジェクト: jinhu/picotcp

static struct pico_dhcp_server_negotiation *pico_dhcp_server_add_negotiation(struct pico_device *dev, struct pico_dhcp_hdr *hdr)
{
  struct pico_dhcp_server_negotiation *dhcpn = NULL;
  struct pico_dhcp_server_setting test = {0};
  struct pico_ip4 *ciaddr = NULL;

  if (pico_dhcp_server_find_negotiation(hdr->xid))
    return NULL;

  dhcpn = pico_zalloc(sizeof(struct pico_dhcp_server_negotiation));
  if (!dhcpn) {
    pico_err = PICO_ERR_ENOMEM;
    return NULL;
  }

  dhcpn->xid = hdr->xid;
  dhcpn->state = PICO_DHCP_STATE_DISCOVER;
  memcpy(dhcpn->hwaddr.addr, hdr->hwaddr, PICO_SIZE_ETH);

  test.dev = dev;
  dhcpn->dhcps = pico_tree_findKey(&DHCPSettings, &test);
  if (!dhcpn->dhcps) {
    dhcps_dbg("DHCP server WARNING: received DHCP message on unconfigured link %s\n", dev->name);
    pico_free(dhcpn);
    return NULL;
  }

  ciaddr = pico_arp_reverse_lookup(&dhcpn->hwaddr);
  if (!ciaddr) {
    dhcpn->ciaddr.addr = dhcpn->dhcps->pool_next;
    dhcpn->dhcps->pool_next = long_be(long_be(dhcpn->dhcps->pool_next) + 1);
    pico_arp_create_entry(dhcpn->hwaddr.addr, dhcpn->ciaddr, dhcpn->dhcps->dev);
  } else {
    dhcpn->ciaddr = *ciaddr;
  }

  pico_tree_insert(&DHCPNegotiations, dhcpn);
  return dhcpn; 
}