C++ (Cpp) etharp_get_entry Beispiele

Beispiel #1

Datei: snmp_mib2_ip.c Projekt: Archcady/mbed-os

static snmp_err_t
ip_NetToMediaTable_get_next_cell_instance_and_value(const u32_t* column, struct snmp_obj_id* row_oid, union snmp_variant_value* value, u32_t* value_len)
{
  u8_t i;
  struct snmp_next_oid_state state;
  u32_t result_temp[LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)];

  /* init struct to search next oid */
  snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges));

  /* iterate over all possible OIDs to find the next one */
  for (i=0; i<ARP_TABLE_SIZE; i++) {
    ip4_addr_t *ip;
    struct netif *netif;
    struct eth_addr *ethaddr;

    if (etharp_get_entry(i, &ip, &netif, &ethaddr)) {
      u32_t test_oid[LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)];

      test_oid[0] = netif_to_num(netif);
      snmp_ip4_to_oid(ip, &test_oid[1]);

      /* check generated OID: is it a candidate for the next one? */
      snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges), LWIP_PTR_NUMERIC_CAST(void*, i));
    }
  }

Beispiel #2

Datei: snmp_mib2_ip.c Projekt: Archcady/mbed-os

static snmp_err_t
ip_NetToMediaTable_get_cell_value_core(u8_t arp_table_index, const u32_t* column, union snmp_variant_value* value, u32_t* value_len)
{
  ip4_addr_t *ip;
  struct netif *netif;
  struct eth_addr *ethaddr;

  etharp_get_entry(arp_table_index, &ip, &netif, &ethaddr);

  /* value */
  switch (*column) {
  case 1: /* atIfIndex / ipNetToMediaIfIndex */
    value->u32 = netif_to_num(netif);
    break;
  case 2: /* atPhysAddress / ipNetToMediaPhysAddress */
    value->ptr = ethaddr;
    *value_len = sizeof(*ethaddr);
    break;
  case 3: /* atNetAddress / ipNetToMediaNetAddress */
    value->u32 = ip->addr;
    break;
  case 4: /* ipNetToMediaType */
    value->u32 = 3; /* dynamic*/
    break;
  default:
    return SNMP_ERR_NOSUCHINSTANCE;
  }

  return SNMP_ERR_NOERROR;
}

Beispiel #3

Datei: snmp_mib2_ip.c Projekt: Archcady/mbed-os

static snmp_err_t
ip_NetToMediaTable_get_cell_value(const u32_t* column, const u32_t* row_oid, u8_t row_oid_len, union snmp_variant_value* value, u32_t* value_len)
{
  ip4_addr_t ip_in;
  u8_t netif_index;
  u8_t i;

  /* check if incoming OID length and if values are in plausible range */
  if (!snmp_oid_in_range(row_oid, row_oid_len, ip_NetToMediaTable_oid_ranges, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges))) {
    return SNMP_ERR_NOSUCHINSTANCE;
  }

  /* get IP from incoming OID */
  netif_index = (u8_t)row_oid[0];
  snmp_oid_to_ip4(&row_oid[1], &ip_in); /* we know it succeeds because of oid_in_range check above */

  /* find requested entry */
  for (i=0; i<ARP_TABLE_SIZE; i++) {
    ip4_addr_t *ip;
    struct netif *netif;
    struct eth_addr *ethaddr;

    if (etharp_get_entry(i, &ip, &netif, &ethaddr)) {
      if ((netif_index == netif_to_num(netif)) && ip4_addr_cmp(&ip_in, ip)) {
        /* fill in object properties */
        return ip_NetToMediaTable_get_cell_value_core(i, column, value, value_len);
      }
    }
  }

  /* not found */
  return SNMP_ERR_NOSUCHINSTANCE;
}

Beispiel #4

Datei: snmp_mib2_ip.c Projekt: a3zzat/incubator-mynewt-core

static snmp_err_t
ip_NetToMediaTable_get_next_cell_instance_and_value(const u32_t* column, struct snmp_obj_id* row_oid, union snmp_variant_value* value, u32_t* value_len)
{
  u8_t i;
  struct snmp_next_oid_state state;
  u32_t result_temp[LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)];

  /* init struct to search next oid */
  snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges));

  /* iterate over all possible OIDs to find the next one */
  for (i=0; i<ARP_TABLE_SIZE; i++) {
    ip4_addr_t *ip;
    struct netif *netif;
    struct eth_addr *ethaddr;

    if (etharp_get_entry(i, &ip, &netif, &ethaddr)) {
      u32_t test_oid[LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)];

      test_oid[0] = netif_to_num(netif);
      snmp_ip4_to_oid(ip, &test_oid[1]);

      /* check generated OID: is it a candidate for the next one? */
      snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges), (void*)(size_t)i);
    }
  }

  /* did we find a next one? */
  if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) {
    snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len);
    /* fill in object properties */
    return ip_NetToMediaTable_get_cell_value_core((u8_t)(size_t)state.reference, column, value, value_len);
  }

  /* not found */
  return SNMP_ERR_NOSUCHINSTANCE;
}