示例#1
0
/**
 * Remove a network interface from the list of lwIP netifs.
 *
 * @param netif the network interface to remove
 */
void
netif_remove(struct netif *netif)
{
  if (netif == NULL) {
    return;
  }

#if LWIP_IGMP
  /* stop IGMP processing */
  if (netif->flags & NETIF_FLAG_IGMP) {
    igmp_stop(netif);
  }
#endif /* LWIP_IGMP */
  if (netif_is_up(netif)) {
    /* set netif down before removing (call callback function) */
    netif_set_down(netif);
  }

  snmp_delete_ipaddridx_tree(netif);

  /*  is it the first netif? */
  if (netif_list == netif) {
    netif_list = netif->next;
  } else {
    /*  look for netif further down the list */
    struct netif * tmpNetif;
    for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) {
      if (tmpNetif->next == netif) {
        tmpNetif->next = netif->next;
        break;
      }
    }
    if (tmpNetif == NULL)
      return; /*  we didn't find any netif today */
  }
  snmp_dec_iflist();
  /* this netif is default? */
  if (netif_default == netif) {
    /* reset default netif */
    netif_set_default(NULL);
  }
#if LWIP_NETIF_REMOVE_CALLBACK
  if (netif->remove_callback) {
    netif->remove_callback(netif);
  }
#endif /* LWIP_NETIF_REMOVE_CALLBACK */
  LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
}
示例#2
0
/**
 * Remove a network interface from the list of lwIP netifs.
 *
 * @param netif the network interface to remove
 */
void netif_remove(struct netif * netif)
{
  if ( netif == NULL ) return;

#if LWIP_IGMP
  //netif->flags |= NETIF_FLAG_IGMP;
  /* stop IGMP processing */
  if (netif->flags & NETIF_FLAG_IGMP) {
    igmp_stop( netif);
  }
#endif /* LWIP_IGMP */

  snmp_delete_ipaddridx_tree(netif);

  /*  is it the first netif? */
  if (netif_list == netif) {
    netif_list = netif->next;
    snmp_dec_iflist();
  }
  else {
    /*  look for netif further down the list */
    struct netif * tmpNetif;
    for (tmpNetif = netif_list; tmpNetif != NULL; tmpNetif = tmpNetif->next) {
      if (tmpNetif->next == netif) {
        tmpNetif->next = netif->next;
        snmp_dec_iflist();
        break;
      }
    }
    if (tmpNetif == NULL)
      return; /*  we didn't find any netif today */
  }
  /* this netif is default? */
  if (netif_default == netif)
    /* reset default netif */
    netif_set_default(NULL);
  LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
}
/**
 * Change the IP address of a network interface
 *
 * @param netif the network interface to change
 * @param ipaddr the new IP address
 *
 * @note call netif_set_addr() if you also want to change netmask and
 * default gateway
 */
void
netif_set_ipaddr(struct netif *netif, ip_addr_t *ipaddr)
{
  /* TODO: Handling of obsolete pcbs */
  /* See:  http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */
#if LWIP_TCP
  struct tcp_pcb *pcb;
  struct tcp_pcb_listen *lpcb;

  /* address is actually being changed? */
  if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) {
    /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */
    LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n"));

	sys_lock_acquire( &tcp_lock );
    pcb = tcp_active_pcbs;
	tcp_active_pcbs = NULL;
	sys_lock_release( &tcp_lock );

    while (pcb != NULL) {
      /* PCB bound to current local interface address? */
      if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))
#if LWIP_AUTOIP
        /* connections to link-local addresses must persist (RFC3927 ch. 1.9) */
        && !ip_addr_islinklocal(&(pcb->local_ip))
#endif /* LWIP_AUTOIP */
        ) {
        /* this connection must be aborted */
        struct tcp_pcb *next = pcb->next;
        LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb));
        tcp_abort(pcb);
        pcb = next;
      } else {
        pcb = pcb->next;
      }
    }
    for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) {
      /* PCB bound to current local interface address? */
      if ((!(ip_addr_isany(&(lpcb->local_ip)))) &&
          (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) {
        /* The PCB is listening to the old ipaddr and
         * is set to listen to the new one instead */
        ip_addr_set(&(lpcb->local_ip), ipaddr);
      }
    }
  }
#endif
  snmp_delete_ipaddridx_tree(netif);
  snmp_delete_iprteidx_tree(0,netif);
  /* set new IP address to netif */
  ip_addr_set(&(netif->ip_addr), ipaddr);
  snmp_insert_ipaddridx_tree(netif);
  snmp_insert_iprteidx_tree(0,netif);

  LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IP address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
    netif->name[0], netif->name[1],
    ip4_addr1_16(&netif->ip_addr),
    ip4_addr2_16(&netif->ip_addr),
    ip4_addr3_16(&netif->ip_addr),
    ip4_addr4_16(&netif->ip_addr)));
}
示例#4
0
/**
 * Remove a network interface from the list of lwIP netifs.
 *
 * @param netif the network interface to remove
 */
void
netif_remove(struct netif *netif)
{
  if (netif == NULL) {
    return;
  }

#if LWIP_IPV4
  if (!ip4_addr_isany_val(netif->ip_addr)) {
#if LWIP_TCP
    tcp_netif_ipv4_addr_changed(&netif->ip_addr, NULL);
#endif /* LWIP_TCP */
    /* cannot do this for UDP, as there is no 'err' callback in udp pcbs */
  }

#if LWIP_IGMP
  /* stop IGMP processing */
  if (netif->flags & NETIF_FLAG_IGMP) {
    igmp_stop(netif);
  }
#endif /* LWIP_IGMP */
#endif /* LWIP_IPV4*/

#if LWIP_IPV6 && LWIP_IPV6_MLD
  /* stop MLD processing */
  mld6_stop(netif);
#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
  if (netif_is_up(netif)) {
    /* set netif down before removing (call callback function) */
    netif_set_down(netif);
  }

  snmp_delete_ipaddridx_tree(netif);

  /* this netif is default? */
  if (netif_default == netif) {
    /* reset default netif */
    netif_set_default(NULL);
  }
  /*  is it the first netif? */
  if (netif_list == netif) {
    netif_list = netif->next;
  } else {
    /*  look for netif further down the list */
    struct netif * tmp_netif;
    for (tmp_netif = netif_list; tmp_netif != NULL; tmp_netif = tmp_netif->next) {
      if (tmp_netif->next == netif) {
        tmp_netif->next = netif->next;
        break;
      }
    }
    if (tmp_netif == NULL) {
      return; /* netif is not on the list */
    }
  }
  snmp_dec_iflist();
#if LWIP_NETIF_REMOVE_CALLBACK
  if (netif->remove_callback) {
    netif->remove_callback(netif);
  }
#endif /* LWIP_NETIF_REMOVE_CALLBACK */
  LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") );
}