Internet on FIRE

/*

 *	BIRD -- Babel Configuration

 *

 *	Copyright (c) 2015-2016 Toke Hoiland-Jorgensen

 *

 *	Can be freely distributed and used under the terms of the GNU GPL.

 */

CF_HDR

#include "proto/babel/babel.h"

#include "nest/iface.h"

CF_DEFINES

#define BABEL_CFG ((struct babel_config *) this_proto)

#define BABEL_IFACE ((struct babel_iface_config *) this_ipatt)

CF_DECLS

CF_KEYWORDS(BABEL, METRIC, RXCOST, HELLO, UPDATE, INTERVAL, PORT, WIRED,

	WIRELESS, RX, TX, BUFFER, LENGTH, CHECK, LINK, BABEL_METRIC, NEXT, HOP,

	IPV4, IPV6)

CF_GRAMMAR

CF_ADDTO(proto, babel_proto)

babel_proto_start: proto_start BABEL

{

  this_proto = proto_config_new(&proto_babel, $1);

  init_list(&BABEL_CFG->iface_list);

};

babel_proto_item:

   proto_item

 | proto_channel

 | INTERFACE babel_iface

 ;

babel_proto_opts:

   /* empty */

 | babel_proto_opts babel_proto_item ';'

 ;

babel_proto:

   babel_proto_start proto_name '{' babel_proto_opts '}';

babel_iface_start:

{

  this_ipatt = cfg_allocz(sizeof(struct babel_iface_config));

  add_tail(&BABEL_CFG->iface_list, NODE this_ipatt);

  init_list(&this_ipatt->ipn_list);

  BABEL_IFACE->port = BABEL_PORT;

  BABEL_IFACE->type = BABEL_IFACE_TYPE_WIRED;

  BABEL_IFACE->tx_tos = IP_PREC_INTERNET_CONTROL;

  BABEL_IFACE->tx_priority = sk_priority_control;

  BABEL_IFACE->check_link = 1;

};

babel_iface_finish:

{

  if (BABEL_IFACE->type == BABEL_IFACE_TYPE_WIRELESS)

  {

    if (!BABEL_IFACE->hello_interval)

      BABEL_IFACE->hello_interval = BABEL_HELLO_INTERVAL_WIRELESS;

    if (!BABEL_IFACE->rxcost)

      BABEL_IFACE->rxcost = BABEL_RXCOST_WIRELESS;

  }

  else

  {

    if (!BABEL_IFACE->hello_interval)

      BABEL_IFACE->hello_interval = BABEL_HELLO_INTERVAL_WIRED;

    if (!BABEL_IFACE->rxcost)

      BABEL_IFACE->rxcost = BABEL_RXCOST_WIRED;

  }

  /* Make sure we do not overflow the 16-bit centisec fields */

  if (!BABEL_IFACE->update_interval)

    BABEL_IFACE->update_interval = MIN_(BABEL_IFACE->hello_interval*BABEL_UPDATE_INTERVAL_FACTOR, BABEL_MAX_INTERVAL);

  BABEL_IFACE->ihu_interval = MIN_(BABEL_IFACE->hello_interval*BABEL_IHU_INTERVAL_FACTOR, BABEL_MAX_INTERVAL);

};

babel_iface_item:

 | PORT expr { BABEL_IFACE->port = $2; if (($2<1) || ($2>65535)) cf_error("Invalid port number"); }

 | RXCOST expr { BABEL_IFACE->rxcost = $2; if (($2<1) || ($2>65535)) cf_error("Invalid rxcost"); }

 | TYPE WIRED { BABEL_IFACE->type = BABEL_IFACE_TYPE_WIRED; }

 | TYPE WIRELESS { BABEL_IFACE->type = BABEL_IFACE_TYPE_WIRELESS; }

 | HELLO INTERVAL expr_us { BABEL_IFACE->hello_interval = $3; if (($3<BABEL_MIN_INTERVAL) || ($3>BABEL_MAX_INTERVAL)) cf_error("Hello interval must be in range 10 ms - 655 s"); }

 | UPDATE INTERVAL expr_us { BABEL_IFACE->update_interval = $3; if (($3<BABEL_MIN_INTERVAL) || ($3>BABEL_MAX_INTERVAL)) cf_error("Update interval must be in range 10 ms - 655 s"); }

 | RX BUFFER expr { BABEL_IFACE->rx_buffer = $3; if (($3<256) || ($3>65535)) cf_error("RX buffer must be in range 256-65535"); }

 | TX LENGTH expr { BABEL_IFACE->tx_length = $3; if (($3<256) || ($3>65535)) cf_error("TX length must be in range 256-65535"); }

 | TX tos { BABEL_IFACE->tx_tos = $2; }

 | TX PRIORITY expr { BABEL_IFACE->tx_priority = $3; }

 | CHECK LINK bool { BABEL_IFACE->check_link = $3; }

 | NEXT HOP IPV4 ipa { BABEL_IFACE->next_hop_ip4 = $4; if (!ipa_is_ip4($4)) cf_error("Must be an IPv4 address"); }

 | NEXT HOP IPV6 ipa { BABEL_IFACE->next_hop_ip6 = $4; if (!ipa_is_ip6($4)) cf_error("Must be an IPv6 address"); }

 ;

babel_iface_opts:

   /* empty */

 | babel_iface_opts babel_iface_item ';'

 ;

babel_iface_opt_list:

   /* empty */

 | '{' babel_iface_opts '}'

 ;

babel_iface:

  babel_iface_start iface_patt_list_nopx babel_iface_opt_list babel_iface_finish;

CF_ADDTO(dynamic_attr, BABEL_METRIC { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_BABEL_METRIC); })

CF_CLI_HELP(SHOW BABEL, ..., [[Show information about Babel protocol]]);

CF_CLI(SHOW BABEL INTERFACES, optsym opttext, [<name>] [\"<interface>\"], [[Show information about Babel interfaces]])

{ babel_show_interfaces(proto_get_named($4, &proto_babel), $5); };

CF_CLI(SHOW BABEL NEIGHBORS, optsym opttext, [<name>] [\"<interface>\"], [[Show information about Babel neighbors]])

{ babel_show_neighbors(proto_get_named($4, &proto_babel), $5); };

CF_CLI(SHOW BABEL ENTRIES, optsym opttext, [<name>], [[Show information about Babel prefix entries]])

{ babel_show_entries(proto_get_named($4, &proto_babel)); };

CF_CODE

CF_END