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

{
  u_int16_t flags = PEER_FLAG_MED_UNCHANGED;

  if (strncmp (argv[1], "as-path", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_AS_PATH_UNCHANGED);
  else if (strncmp (argv[1], "next-hop", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_NEXTHOP_UNCHANGED);

  return peer_af_flag_set_vty (vty, argv[0], bgp_node_afi (vty),
			       bgp_node_safi (vty), flags);
}

ALIAS (neighbor_attr_unchanged,
       neighbor_attr_unchanged5_cmd,
       NEIGHBOR_CMD2 "attribute-unchanged as-path next-hop med",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "As-path attribute\n"
       "Nexthop attribute\n"
       "Med attribute\n");

ALIAS (neighbor_attr_unchanged,
       neighbor_attr_unchanged6_cmd,
       NEIGHBOR_CMD2 "attribute-unchanged as-path med next-hop",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "As-path attribute\n"
       "Med attribute\n"
       "Nexthop attribute\n");

ALIAS (neighbor_attr_unchanged,
       neighbor_attr_unchanged7_cmd,
       NEIGHBOR_CMD2 "attribute-unchanged next-hop med as-path",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Nexthop attribute\n"
       "Med attribute\n"
       "As-path attribute\n");

ALIAS (neighbor_attr_unchanged,
       neighbor_attr_unchanged8_cmd,
       NEIGHBOR_CMD2 "attribute-unchanged next-hop as-path med",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Nexthop attribute\n"
       "As-path attribute\n"
       "Med attribute\n");

ALIAS (neighbor_attr_unchanged,
       neighbor_attr_unchanged9_cmd,
       NEIGHBOR_CMD2 "attribute-unchanged med next-hop as-path",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Med attribute\n"
       "Nexthop attribute\n"
       "As-path attribute\n");

ALIAS (neighbor_attr_unchanged,
       neighbor_attr_unchanged10_cmd,
       NEIGHBOR_CMD2 "attribute-unchanged med as-path next-hop",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Med attribute\n"
       "As-path attribute\n"
       "Nexthop attribute\n");

DEFUN (no_neighbor_attr_unchanged,
       no_neighbor_attr_unchanged_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged",
       NO_STR	 
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n")
{
  return peer_af_flag_unset_vty (vty, argv[0], bgp_node_afi (vty),
				 bgp_node_safi (vty),
				 (PEER_FLAG_AS_PATH_UNCHANGED |
				  PEER_FLAG_NEXTHOP_UNCHANGED |
				  PEER_FLAG_MED_UNCHANGED));
}

DEFUN (no_neighbor_attr_unchanged1,
       no_neighbor_attr_unchanged1_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged (as-path|next-hop|med)",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "As-path attribute\n"
       "Nexthop attribute\n"
       "Med attribute\n")
{
  u_int16_t flags = 0;

  if (strncmp (argv[1], "as-path", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_AS_PATH_UNCHANGED);
  else if (strncmp (argv[1], "next-hop", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_NEXTHOP_UNCHANGED);
  else if (strncmp (argv[1], "med", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_MED_UNCHANGED);

  return peer_af_flag_unset_vty (vty, argv[0], bgp_node_afi (vty),
				 bgp_node_safi (vty), flags);
}

DEFUN (no_neighbor_attr_unchanged2,
       no_neighbor_attr_unchanged2_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged as-path (next-hop|med)",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "As-path attribute\n"
       "Nexthop attribute\n"
       "Med attribute\n")
{
  u_int16_t flags = PEER_FLAG_AS_PATH_UNCHANGED;

  if (strncmp (argv[1], "next-hop", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_NEXTHOP_UNCHANGED);
  else if (strncmp (argv[1], "med", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_MED_UNCHANGED);

  return peer_af_flag_unset_vty (vty, argv[0], bgp_node_afi (vty),
				 bgp_node_safi (vty), flags);
}

DEFUN (no_neighbor_attr_unchanged3,
       no_neighbor_attr_unchanged3_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged next-hop (as-path|med)",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Nexthop attribute\n"
       "As-path attribute\n"
       "Med attribute\n")
{
  u_int16_t flags = PEER_FLAG_NEXTHOP_UNCHANGED;

  if (strncmp (argv[1], "as-path", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_AS_PATH_UNCHANGED);
  else if (strncmp (argv[1], "med", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_MED_UNCHANGED);

  return peer_af_flag_unset_vty (vty, argv[0], bgp_node_afi (vty),
				 bgp_node_safi (vty), flags);
}

DEFUN (no_neighbor_attr_unchanged4,
       no_neighbor_attr_unchanged4_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged med (as-path|next-hop)",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Med attribute\n"
       "As-path attribute\n"
       "Nexthop attribute\n")
{
  u_int16_t flags = PEER_FLAG_MED_UNCHANGED;

  if (strncmp (argv[1], "as-path", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_AS_PATH_UNCHANGED);
  else if (strncmp (argv[1], "next-hop", 1) == 0)
    SET_FLAG (flags, PEER_FLAG_NEXTHOP_UNCHANGED);

  return peer_af_flag_unset_vty (vty, argv[0], bgp_node_afi (vty),
				 bgp_node_safi (vty), flags);
}

ALIAS (no_neighbor_attr_unchanged,
       no_neighbor_attr_unchanged5_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged as-path next-hop med",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "As-path attribute\n"
       "Nexthop attribute\n"
       "Med attribute\n");

ALIAS (no_neighbor_attr_unchanged,
       no_neighbor_attr_unchanged6_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged as-path med next-hop",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "As-path attribute\n"
       "Med attribute\n"
       "Nexthop attribute\n");

ALIAS (no_neighbor_attr_unchanged,
       no_neighbor_attr_unchanged7_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged next-hop med as-path",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Nexthop attribute\n"
       "Med attribute\n"
       "As-path attribute\n");

ALIAS (no_neighbor_attr_unchanged,
       no_neighbor_attr_unchanged8_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged next-hop as-path med",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Nexthop attribute\n"
       "As-path attribute\n"
       "Med attribute\n");

ALIAS (no_neighbor_attr_unchanged,
       no_neighbor_attr_unchanged9_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged med next-hop as-path",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Med attribute\n"
       "Nexthop attribute\n"
       "As-path attribute\n");

ALIAS (no_neighbor_attr_unchanged,
       no_neighbor_attr_unchanged10_cmd,
       NO_NEIGHBOR_CMD2 "attribute-unchanged med as-path next-hop",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "BGP attribute is propagated unchanged to this neighbor\n"
       "Med attribute\n"
       "As-path attribute\n"
       "Nexthop attribute\n");

/* For old version Zebra compatibility.  */
DEFUN (neighbor_transparent_as,
       neighbor_transparent_as_cmd,
       NEIGHBOR_CMD "transparent-as",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR
       "Do not append my AS number even peer is EBGP peer\n")
{
  return peer_af_flag_set_vty (vty, argv[0], bgp_node_afi (vty),
			       bgp_node_safi (vty),
			       PEER_FLAG_AS_PATH_UNCHANGED);
}

DEFUN (neighbor_transparent_nexthop,
       neighbor_transparent_nexthop_cmd,
       NEIGHBOR_CMD "transparent-nexthop",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR
       "Do not change nexthop even peer is EBGP peer\n")
{
  return peer_af_flag_set_vty (vty, argv[0], bgp_node_afi (vty),
			       bgp_node_safi (vty),
			       PEER_FLAG_NEXTHOP_UNCHANGED);
}

/* EBGP multihop configuration. */
int
peer_ebgp_multihop_set_vty (struct vty *vty, char *ip_str, char *ttl_str)
{
  struct peer *peer;
  int ttl;

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

  if (! ttl_str)
    ttl = TTL_MAX;
  else
    VTY_GET_INTEGER_RANGE ("TTL", ttl, ttl_str, 1, 255);

  peer_ebgp_multihop_set (peer, ttl);

  return CMD_SUCCESS;
}

int
peer_ebgp_multihop_unset_vty (struct vty *vty, char *ip_str) 
{
  struct peer *peer;

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

  peer_ebgp_multihop_unset (peer);

  return CMD_SUCCESS;
}

/* neighbor ebgp-multihop. */
DEFUN (neighbor_ebgp_multihop,
       neighbor_ebgp_multihop_cmd,
       NEIGHBOR_CMD2 "ebgp-multihop",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Allow EBGP neighbors not on directly connected networks\n")
{
  return peer_ebgp_multihop_set_vty (vty, argv[0], NULL);
}

DEFUN (neighbor_ebgp_multihop_ttl,
       neighbor_ebgp_multihop_ttl_cmd,
       NEIGHBOR_CMD2 "ebgp-multihop <1-255>",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Allow EBGP neighbors not on directly connected networks\n"
       "maximum hop count\n")
{
  return peer_ebgp_multihop_set_vty (vty, argv[0], argv[1]);
}

DEFUN (no_neighbor_ebgp_multihop,
       no_neighbor_ebgp_multihop_cmd,
       NO_NEIGHBOR_CMD2 "ebgp-multihop",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Allow EBGP neighbors not on directly connected networks\n")
{
  return peer_ebgp_multihop_unset_vty (vty, argv[0]);
}

ALIAS (no_neighbor_ebgp_multihop,
       no_neighbor_ebgp_multihop_ttl_cmd,
       NO_NEIGHBOR_CMD2 "ebgp-multihop <1-255>",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Allow EBGP neighbors not on directly connected networks\n"
       "maximum hop count\n");

/* Enforce multihop.  */
DEFUN (neighbor_enforce_multihop,
       neighbor_enforce_multihop_cmd,
       NEIGHBOR_CMD2 "enforce-multihop",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Enforce EBGP neighbors perform multihop\n")
{
  return peer_flag_set_vty (vty, argv[0], PEER_FLAG_ENFORCE_MULTIHOP);
}

DEFUN (no_neighbor_enforce_multihop,
       no_neighbor_enforce_multihop_cmd,
       NO_NEIGHBOR_CMD2 "enforce-multihop",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Enforce EBGP neighbors perform multihop\n")
{
  return peer_flag_unset_vty (vty, argv[0], PEER_FLAG_ENFORCE_MULTIHOP);
}

DEFUN (neighbor_description,
       neighbor_description_cmd,
       NEIGHBOR_CMD2 "description .LINE",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Neighbor specific description\n"
       "Up to 80 characters describing this neighbor\n")
{
  struct peer *peer;
  struct buffer *b;
  char *str;
  int i;

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

  if (argc == 1)
    return CMD_SUCCESS;

  /* Make string from buffer.  This function should be provided by
     buffer.c. */
  b = buffer_new (1024);
  for (i = 1; i < argc; i++)
    {
      buffer_putstr (b, (u_char *)argv[i]);
      buffer_putc (b, ' ');
    }
  buffer_putc (b, '\0');
  str = buffer_getstr (b);
  buffer_free (b);

  peer_description_set (peer, str);

  free (str);

  return CMD_SUCCESS;
}

DEFUN (no_neighbor_description,
       no_neighbor_description_cmd,
       NO_NEIGHBOR_CMD2 "description",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Neighbor specific description\n")
{
  struct peer *peer;

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

  peer_description_unset (peer);

  return CMD_SUCCESS;
}

ALIAS (no_neighbor_description,
       no_neighbor_description_val_cmd,
       NO_NEIGHBOR_CMD2 "description .LINE",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Neighbor specific description\n"
       "Up to 80 characters describing this neighbor\n");

/* Neighbor update-source. */
int
peer_update_source_vty (struct vty *vty, char *peer_str, char *source_str)
{
  struct peer *peer;
  union sockunion *su;

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

  if (source_str)
    {
      su = sockunion_str2su (source_str);
      if (su)
	{
	  peer_update_source_addr_set (peer, su);
	  sockunion_free (su);
	}
      else
	peer_update_source_if_set (peer, source_str);
    }
  else
    peer_update_source_unset (peer);

  return CMD_SUCCESS;
}

DEFUN (neighbor_update_source,
       neighbor_update_source_cmd,
       NEIGHBOR_CMD2 "update-source WORD",
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Source of routing updates\n"
       "Interface name\n")
{
  return peer_update_source_vty (vty, argv[0], argv[1]);
}

DEFUN (no_neighbor_update_source,
       no_neighbor_update_source_cmd,
       NO_NEIGHBOR_CMD2 "update-source",
       NO_STR
       NEIGHBOR_STR
       NEIGHBOR_ADDR_STR2
       "Source of routing updates\n"
       "Interface name\n")
{
  return peer_update_source_vty (vty, argv[0], NULL);
}

int
peer_default_originate_set_vty (struct vty *vty, char *peer_str, afi_t afi,
				safi_t safi, char *rmap, int set)
{
  int ret;
  struct peer *peer;

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

  if (set)
    ret = peer_default_originate_set (peer, afi, safi, rmap);
  else
    ret = peer_defaul