diff options
Diffstat (limited to 'proto/radv/config.Y')
| -rw-r--r-- | proto/radv/config.Y | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/proto/radv/config.Y b/proto/radv/config.Y new file mode 100644 index 0000000..78a0955 --- /dev/null +++ b/proto/radv/config.Y @@ -0,0 +1,157 @@ +/* + * 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 |