bgp_vty.c

大名鼎鼎的路由器源码。程序分ZEBRA、OSPFRIP等3个包。程序框架采用一个路由协议一个进程的方式


/* "no bgp default ipv4-unicast". */
DEFUN (no_bgp_default_ipv4_unicast,
       no_bgp_default_ipv4_unicast_cmd,
       "no bgp default ipv4-unicast",
       NO_STR
       "BGP specific commands\n"
       "Configure BGP defaults\n"
       "Activate ipv4-unicast for a peer by default\n")
{
  struct bgp *bgp;

  bgp = vty->index;
  bgp_flag_set (bgp, BGP_FLAG_NO_DEFAULT_IPV4);
  return CMD_SUCCESS;
}

DEFUN (bgp_default_ipv4_unicast,
       bgp_default_ipv4_unicast_cmd,
       "bgp default ipv4-unicast",
       "BGP specific commands\n"
       "Configure BGP defaults\n"
       "Activate ipv4-unicast for a peer by default\n")
{
  struct bgp *bgp;

  bgp = vty->index;
  bgp_flag_unset (bgp, BGP_FLAG_NO_DEFAULT_IPV4);
  return CMD_SUCCESS;
}

/* "bgp import-check" configuration.  */
DEFUN (bgp_network_import_check,
       bgp_network_import_check_cmd,
       "bgp network import-check",
       "BGP specific commands\n"
       "BGP network command\n"
       "Check BGP network route exists in IGP\n")
{
  struct bgp *bgp;

  bgp = vty->index;
  bgp_flag_set (bgp, BGP_FLAG_IMPORT_CHECK);
  return CMD_SUCCESS;
}

DEFUN (no_bgp_network_import_check,
       no_bgp_network_import_check_cmd,
       "no bgp network import-check",
       NO_STR
       "BGP specific commands\n"
       "BGP network command\n"
       "Check BGP network route exists in IGP\n")
{
  struct bgp *bgp;

  bgp = vty->index;
  bgp_flag_unset (bgp, BGP_FLAG_IMPORT_CHECK);
  return CMD_SUCCESS;
}

DEFUN (bgp_default_local_preference,
       bgp_default_local_preference_cmd,
       "bgp default local-preference <0-4294967295>",
       "BGP specific commands\n"
       "Configure BGP defaults\n"
       "local preference (higher=more preferred)\n"
       "Configure default local preference value\n")
{
  struct bgp *bgp;
  u_int32_t local_pref;

  bgp = vty->index;

  VTY_GET_INTEGER ("local preference", local_pref, argv[0]);

  bgp_default_local_preference_set (bgp, local_pref);

  return CMD_SUCCESS;
}

DEFUN (no_bgp_default_local_preference,
       no_bgp_default_local_preference_cmd,
       "no bgp default local-preference",
       NO_STR
       "BGP specific commands\n"
       "Configure BGP defaults\n"
       "local preference (higher=more preferred)\n")
{
  struct bgp *bgp;

  bgp = vty->index;
  bgp_default_local_preference_unset (bgp);
  return CMD_SUCCESS;
}

ALIAS (no_bgp_default_local_preference,
       no_bgp_default_local_preference_val_cmd,
       "no bgp default local-preference <0-4294967295>",
       NO_STR
       "BGP specific commands\n"
       "Configure BGP defaults\n"
       "local preference (higher=more preferred)\n"
       "Configure default local preference value\n");

static int
peer_remote_as_vty (struct vty *vty, char *peer_str, char *as_str, afi_t afi,
		    safi_t safi)
{
  int ret;
  struct bgp *bgp;
  as_t as;
  union sockunion su;

  bgp = vty->index;

  /* Get AS number.  */
  VTY_GET_INTEGER_RANGE ("AS", as, as_str, 1, 65535);

  /* If peer is peer group, call proper function.  */
  ret = str2sockunion (peer_str, &su);
  if (ret < 0)
    {
      ret = peer_group_remote_as (bgp, peer_str, &as);
      if (ret < 0)
	{
	  vty_out (vty, "%% Create the peer-group first%s", VTY_NEWLINE);
	  return CMD_WARNING;
	}
      return CMD_SUCCESS;
    }

  if (peer_address_self_check (&su))
    {
      vty_out (vty, "%% Can not configure the local system as neighbor%s",
	       VTY_NEWLINE);
      return CMD_WARNING;
    }

  ret = peer_remote_as (bgp, &su, &as, afi, safi);

  /* This peer belongs to peer group.  */
  switch (ret)
    {
    case BGP_ERR_PEER_GROUP_MEMBER:
      vty_out (vty, "%% Peer-group AS %d. Cannot configure remote-as for member%s", as, VTY_NEWLINE);
      return CMD_WARNING;
      break;
    case BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT:
      vty_out (vty, "%% The AS# can not be changed from %d to %s, peer-group members must be all internal or all external%s", as, as_str, VTY_NEWLINE);
      return CMD_WARNING;
      break;
    }
  return bgp_vty_return (vty, ret);
}

DEFUN (neighbor_remote_as,
       neighbor_remote_as_cmd,
       NEIGHBOR_CMD2 "remote-as <1-65535>",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Specify a BGP neighbor\n"
       AS_STR)
{
  return peer_remote_as_vty (vty, argv[0], argv[1], AFI_IP, SAFI_UNICAST);
}

DEFUN (neighbor_peer_group,
       neighbor_peer_group_cmd,
       "neighbor WORD peer-group",
       NEIGHBOR_STR
       "Neighbor tag\n"
       "Configure peer-group\n")
{
  struct bgp *bgp;
  struct peer_group *group;

  bgp = vty->index;

  group = peer_group_get (bgp, argv[0]);
  if (! group)
    return CMD_WARNING;

  return CMD_SUCCESS;
}

DEFUN (no_neighbor,
       no_neighbor_cmd,
       NO_NEIGHBOR_CMD2,
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2)
{
  int ret;
  union sockunion su;
  struct peer_group *group;
  struct peer *peer;

  ret = str2sockunion (argv[0], &su);
  if (ret < 0)
    {
      group = peer_group_lookup (vty->index, argv[0]);
      if (group)
	peer_group_delete (group);
      else
	{
	  vty_out (vty, "%% Create the peer-group first%s", VTY_NEWLINE);
	  return CMD_WARNING;
	}
    }
  else
    {
      peer = peer_lookup (vty->index, &su);
      if (peer)
	peer_delete (peer);
    }

  return CMD_SUCCESS;
}

ALIAS (no_neighbor,
       no_neighbor_remote_as_cmd,
       NO_NEIGHBOR_CMD "remote-as <1-65535>",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR
       "Specify a BGP neighbor\n"
       AS_STR);

DEFUN (no_neighbor_peer_group,
       no_neighbor_peer_group_cmd,
       "no neighbor WORD peer-group",
       NO_STR
       NEIGHBOR_STR
       "Neighbor tag\n"
       "Configure peer-group\n")
{
  struct peer_group *group;

  group = peer_group_lookup (vty->index, argv[0]);
  if (group)
    peer_group_delete (group);
  else
    {
      vty_out (vty, "%% Create the peer-group first%s", VTY_NEWLINE);
      return CMD_WARNING;
    }
  return CMD_SUCCESS;
}

DEFUN (no_neighbor_peer_group_remote_as,
       no_neighbor_peer_group_remote_as_cmd,
       "no neighbor WORD remote-as <1-65535>",
       NO_STR
       NEIGHBOR_STR
       "Neighbor tag\n"
       "Specify a BGP neighbor\n"
       AS_STR)
{
  struct peer_group *group;

  group = peer_group_lookup (vty->index, argv[0]);
  if (group)
    peer_group_remote_as_delete (group);
  else
    {
      vty_out (vty, "%% Create the peer-group first%s", VTY_NEWLINE);
      return CMD_WARNING;
    }
  return CMD_SUCCESS;
}

DEFUN (neighbor_local_as,
       neighbor_local_as_cmd,
       NEIGHBOR_CMD2 "local-as <1-65535>",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Specify a local-as number\n"
       "AS number used as local AS\n")
{
  struct peer *peer;
  int ret;

  peer = peer_and_group_lookup_vty (vty, argv[0]);
  if (! peer)
    return CMD_WARNING;

  ret = peer_local_as_set (peer, atoi (argv[1]), 0);
  return bgp_vty_return (vty, ret);
}

DEFUN (neighbor_local_as_no_prepend,
       neighbor_local_as_no_prepend_cmd,
       NEIGHBOR_CMD2 "local-as <1-65535> no-prepend",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Specify a local-as number\n"
       "AS number used as local AS\n"
       "Do not prepend local-as to updates from ebgp peers\n")
{
  struct peer *peer;
  int ret;

  peer = peer_and_group_lookup_vty (vty, argv[0]);
  if (! peer)
    return CMD_WARNING;

  ret = peer_local_as_set (peer, atoi (argv[1]), 1);
  return bgp_vty_return (vty, ret);
}

DEFUN (no_neighbor_local_as,
       no_neighbor_local_as_cmd,
       NO_NEIGHBOR_CMD2 "local-as",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Specify a local-as number\n")
{
  struct peer *peer;
  int ret;

  peer = peer_and_group_lookup_vty (vty, argv[0]);
  if (! peer)
    return CMD_WARNING;

  ret = peer_local_as_unset (peer);
  return bgp_vty_return (vty, ret);
}

ALIAS (no_neighbor_local_as,
       no_neighbor_local_as_val_cmd,
       NO_NEIGHBOR_CMD2 "local-as <1-65535>",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Specify a local-as number\n"
       "AS number used as local AS\n");

ALIAS (no_neighbor_local_as,
       no_neighbor_local_as_val2_cmd,
       NO_NEIGHBOR_CMD2 "local-as <1-65535> no-prepend",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Specify a local-as number\n"
       "AS number used as local AS\n"
       "Do not prepend local-as to updates from ebgp peers\n");

DEFUN (neighbor_activate,
       neighbor_activate_cmd,
       NEIGHBOR_CMD2 "activate",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Enable the Address Family for this Neighbor\n")
{
  struct peer *peer;

  peer = peer_and_group_lookup_vty (vty, argv[0]);
  if (! peer)
    return CMD_WARNING;

  peer_activate (peer, bgp_node_afi (vty), bgp_node_safi (vty));

  return CMD_SUCCESS;
}

DEFUN (no_neighbor_activate,
       no_neighbor_activate_cmd,
       NO_NEIGHBOR_CMD2 "activate",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Enable the Address Family for this Neighbor\n")
{
  int ret;
  struct peer *peer;

  /* Lookup peer. */
  peer = peer_and_group_lookup_vty (vty, argv[0]);
  if (! peer)
    return CMD_WARNING;

  ret = peer_deactivate (peer, bgp_node_afi (vty), bgp_node_safi (vty));

  return bgp_vty_return (vty, ret);
}

DEFUN (neighbor_set_peer_group,
       neighbor_set_peer_group_cmd,
       NEIGHBOR_CMD "peer-group WORD",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR
       "Member of the peer-group\n"
       "peer-group name\n")
{
  int ret;
  as_t as;
  union sockunion su;
  struct bgp *bgp;
  struct peer_group *group;

  bgp = vty->index;

  ret = str2sockunion (argv[0], &su);
  if (ret < 0)
    {
      vty_out (vty, "%% Malformed address: %s%s", argv[0], VTY_NEWLINE);
      return CMD_WARNING;
    }

  group = peer_group_lookup (bgp, argv[1]);
  if (! group)
    {
      vty_out (vty, "%% Configure the peer-group first%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  if (peer_address_self_check (&su))
    {
      vty_out (vty, "%% Can not configure the local system as neighbor%s",
	       VTY_NEWLINE);
      return CMD_WARNING;
    }

  ret = peer_group_bind (bgp, &su, group, bgp_node_afi (vty), 
			 bgp_node_safi (vty), &as);

  if (ret == BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT)
    {
      vty_out (vty, "%% Peer with AS %d cannot be in this peer-group, members must be all internal or all external%s", as, VTY_NEWLINE);
      return CMD_WARNING;
    }

  return bgp_vty_return (vty, ret);
}

DEFUN (no_neighbor_set_peer_group,
       no_neighbor_set_peer_group_cmd,
       NO_NEIGHBOR_CMD "peer-group WORD",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR
       "Member of the peer-group\n"
       "peer-group name\n")
{
  int ret;
  struct bgp *bgp;
  struct peer *peer;
  struct peer_group *group;

  bgp = vty->index;

  peer = peer_lookup_vty (vty, argv[0]);
  if (! peer)
    return CMD_WARNING;

  group = peer_group_lookup (bgp, argv[1]);
  if (! group)
    {
      vty_out (vty, "%% Configure the peer-group first%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  ret = peer_group_unbind (bgp, peer, group, bgp_node_afi (vty),
			   bgp_node_safi (vty));

  return bgp_vty_return (vty, ret);
}

int
peer_flag_modify_vty (struct vty *vty, char *ip_str, u_int16_t flag, int set)
{
  int ret;
  struct peer *peer;

  peer = peer_and_group_lookup_vty (vty, ip_str);
  if (! peer)
    return CMD_WARNING;

  if (set)
    ret = peer_flag_set (peer, flag);
  else
    ret = peer_flag_unset (peer, flag);

  return bgp_vty_return (vty, ret);
}

int
peer_flag_set_vty (struct vty *vty, char *ip_str, u_int16_t flag)
{
  return peer_flag_modify_vty (vty, ip_str, flag, 1);
}

int
peer_flag_unset_vty (struct vty *vty, char *ip_str, u_int16_t flag)
{
  return peer_flag_modify_vty (vty, ip_str, flag, 0);
}

/* neighbor passive. */
DEFUN (neighbor_passive,
       neighbor_passive_cmd,