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|
/*
* BIRD -- Router Advertisement Configuration
*
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
CF_HDR
#include "proto/radv/radv.h"
CF_DEFINES
#define RADV_CFG ((struct radv_config *) this_proto)
#define RADV_IFACE ((struct radv_iface_config *) this_ipatt)
#define RADV_PREFIX this_radv_prefix
static struct radv_prefix_config *this_radv_prefix;
CF_DECLS
CF_KEYWORDS(RADV, PREFIX, INTERFACE, MIN, MAX, RA, DELAY, INTERVAL,
MANAGED, OTHER, CONFIG, LINK, MTU, REACHABLE, TIME, RETRANS,
TIMER, CURRENT, HOP, LIMIT, DEFAULT, VALID, PREFERRED,
LIFETIME, SKIP, ONLINK, AUTONOMOUS)
CF_GRAMMAR
CF_ADDTO(proto, radv_proto '}')
radv_proto_start: proto_start RADV
{
this_proto = proto_config_new(&proto_radv, sizeof(struct radv_config));
init_list(&RADV_CFG->patt_list);
init_list(&RADV_CFG->pref_list);
};
radv_proto_item:
proto_item
| PREFIX radv_prefix { add_tail(&RADV_CFG->pref_list, NODE this_radv_prefix); }
| INTERFACE radv_iface
;
radv_proto_opts:
/* empty */
| radv_proto_opts radv_proto_item ';'
;
radv_proto:
radv_proto_start proto_name '{' radv_proto_opts;
radv_iface_start:
{
this_ipatt = cfg_allocz(sizeof(struct radv_iface_config));
add_tail(&RADV_CFG->patt_list, NODE this_ipatt);
init_list(&this_ipatt->ipn_list);
init_list(&RADV_IFACE->pref_list);
RADV_IFACE->min_ra_int = -1; /* undefined */
RADV_IFACE->max_ra_int = DEFAULT_MAX_RA_INT;
RADV_IFACE->min_delay = DEFAULT_MIN_DELAY;
RADV_IFACE->current_hop_limit = DEFAULT_CURRENT_HOP_LIMIT;
RADV_IFACE->default_lifetime = -1;
};
radv_iface_item:
MIN RA INTERVAL expr { RADV_IFACE->min_ra_int = $4; if ($4 < 3) cf_error("Min RA interval must be at least 3"); }
| MAX RA INTERVAL expr { RADV_IFACE->max_ra_int = $4; if (($4 < 4) || ($4 > 1800)) cf_error("Max RA interval must be in range 4-1800"); }
| MIN DELAY expr { RADV_IFACE->min_delay = $3; if ($3 <= 0) cf_error("Min delay must be positive"); }
| MANAGED bool { RADV_IFACE->managed = $2; }
| OTHER CONFIG bool { RADV_IFACE->other_config = $3; }
| LINK MTU expr { RADV_IFACE->link_mtu = $3; if ($3 < 0) cf_error("Link MTU must be 0 or positive"); }
| REACHABLE TIME expr { RADV_IFACE->reachable_time = $3; if (($3 < 0) || ($3 > 3600000)) cf_error("Reachable time must be in range 0-3600000"); }
| RETRANS TIMER expr { RADV_IFACE->retrans_timer = $3; if ($3 < 0) cf_error("Retrans timer must be 0 or positive"); }
| CURRENT HOP LIMIT expr { RADV_IFACE->current_hop_limit = $4; if (($4 < 0) || ($4 > 255)) cf_error("Current hop limit must be in range 0-255"); }
| DEFAULT LIFETIME expr { RADV_IFACE->default_lifetime = $3; if (($3 < 0) || ($3 > 9000)) cf_error("Default lifetime must be in range 0-9000"); }
| PREFIX radv_prefix { add_tail(&RADV_IFACE->pref_list, NODE this_radv_prefix); }
;
radv_iface_finish:
{
struct radv_iface_config *ic = RADV_IFACE;
if (ic->min_ra_int == (u32) -1)
ic->min_ra_int = _MAX(ic->max_ra_int / 3, 3);
if (ic->default_lifetime == (u32) -1)
ic->default_lifetime = 3 * ic->max_ra_int;
if ((ic->min_ra_int > 3) &&
(ic->min_ra_int > (ic->max_ra_int * 3 / 4)))
cf_error("Min RA interval must be at most 3/4 * Max RA interval %d %d", ic->min_ra_int, ic->max_ra_int);
if ((ic->default_lifetime > 0) && (ic->default_lifetime < ic->max_ra_int))
cf_error("Default lifetime must be either 0 or at least Max RA interval");
};
radv_iface_opts:
/* empty */
| radv_iface_opts radv_iface_item ';'
;
radv_iface_opt_list:
/* empty */
| '{' radv_iface_opts '}'
;
radv_iface:
radv_iface_start iface_patt_list radv_iface_opt_list radv_iface_finish;
radv_prefix_start: prefix
{
this_radv_prefix = cfg_allocz(sizeof(struct radv_prefix_config));
RADV_PREFIX->prefix = $1.addr;
RADV_PREFIX->pxlen = $1.len;
RADV_PREFIX->onlink = 1;
RADV_PREFIX->autonomous = 1;
RADV_PREFIX->valid_lifetime = DEFAULT_VALID_LIFETIME;
RADV_PREFIX->preferred_lifetime = DEFAULT_PREFERRED_LIFETIME;
};
radv_prefix_item:
SKIP bool { RADV_PREFIX->skip = $2; }
| ONLINK bool { RADV_PREFIX->onlink = $2; }
| AUTONOMOUS bool { RADV_PREFIX->autonomous = $2; }
| VALID LIFETIME expr { RADV_PREFIX->valid_lifetime = $3; if ($3 < 0) cf_error("Valid lifetime must be 0 or positive"); }
| PREFERRED LIFETIME expr { RADV_PREFIX->preferred_lifetime = $3; if ($3 < 0) cf_error("Preferred lifetime must be 0 or positive"); }
;
radv_prefix_finish:
{
if (RADV_PREFIX->preferred_lifetime > RADV_PREFIX->valid_lifetime)
cf_error("Preferred lifetime must be at most Valid lifetime");
};
radv_prefix_opts:
/* empty */
| radv_prefix_opts radv_prefix_item ';'
;
radv_prefix_opt_list:
/* empty */
| '{' radv_prefix_opts '}'
;
radv_prefix:
radv_prefix_start radv_prefix_opt_list radv_prefix_finish;
CF_CODE
CF_END
|
