diff options
Diffstat (limited to 'bgpd/bgp_routemap.c')
| -rw-r--r-- | bgpd/bgp_routemap.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/bgpd/bgp_routemap.c b/bgpd/bgp_routemap.c index 806a5072..e660568c 100644 --- a/bgpd/bgp_routemap.c +++ b/bgpd/bgp_routemap.c @@ -1119,6 +1119,112 @@ struct route_map_rule_cmd route_set_metric_cmd = route_set_metric_compile, route_set_metric_free, }; + +#ifdef SUPPORT_REALMS +/* `set realm REALM' */ + +#define REALM_PEER_AS 0xFFFFA +#define REALM_ORIGIN_AS 0xFFFFB + +/* Attr. Flags and Attr. Type Code. */ +#define AS_HEADER_SIZE 2 + +/* Two octet is used for AS value. */ +#define AS_VALUE_SIZE sizeof (as_t) + +static route_map_result_t +route_set_realm (void *rule, struct prefix *prefix, + route_map_object_t type, void *object) +{ + u_int32_t *realm; + u_int16_t realm_value = 0; + struct bgp_info *bgp_info; + struct aspath *aspath; + + struct assegment *assegment; + + if(type != RMAP_BGP) + return RMAP_OKAY; + + bgp_info = object; + aspath = bgp_info->attr->aspath; + realm = (u_int32_t*) rule; + + if (*realm == REALM_PEER_AS) + { + if (aspath == NULL || aspath->segments == NULL) + return RMAP_OKAY; + + realm_value = bgp_info->peer->as; + + } + else if (*realm == REALM_ORIGIN_AS) + { + if (aspath == NULL || aspath->segments == NULL) + return RMAP_PERMIT; + + assegment = aspath->segments; + + while (assegment) { + int i; + + for (i = 0; i < assegment->length; i++) + realm_value = assegment->as[i]; + + assegment = assegment->next; + } + } + else realm_value = (u_int16_t)(*realm & 0xFFFF); + + bgp_info->attr->realmto = realm_value; + + return RMAP_OKAY; +} + +/* + * set realm REALM - to set 'to' realm of route + */ +static void * +route_set_realm_compile (char *arg) +{ + u_int32_t *realm; + u_int32_t realmid; + + if (strcmp(arg, "peer-as") == 0) + { + realmid = REALM_PEER_AS; + } + else if (strcmp(arg, "origin-as") == 0) + { + realmid = REALM_ORIGIN_AS; + } + else if (rtnl_rtrealm_a2n (&realmid, arg) < 0) + { + return NULL; + } + + realm = XMALLOC (MTYPE_ROUTE_MAP_COMPILED, sizeof (u_int32_t)); + *realm = (u_int32_t)realmid; + + return realm; +} + +static void +route_set_realm_free (void *rule) +{ + XFREE (MTYPE_ROUTE_MAP_COMPILED, rule); +} + +/* Set realms rule structure. */ +struct route_map_rule_cmd route_set_realm_cmd = +{ + "realm", + route_set_realm, + route_set_realm_compile, + route_set_realm_free, +}; +#endif + /* `set as-path prepend ASPATH' */ @@ -2827,6 +2933,59 @@ ALIAS (no_set_metric, "Metric value for destination routing protocol\n" "Metric value\n") +#ifdef SUPPORT_REALMS +DEFUN (set_realm, + set_realm_cmd, + "set realm (<1-255>|WORD)", + SET_STR + "Set realm id or name for Linux FIB routes\n" + "Realm id for Linux FIB routes\n" + "Realm name for Linux FIB routes\n") +{ + return bgp_route_set_add (vty, vty->index, "realm", argv[0]); +} + +ALIAS (set_realm, + set_realm_origin_peer_cmd, + "set realm (origin-as|peer-as)", + MATCH_STR + "Set realm for Linux FIB routes\n" + "Use route origin AS as realm id\n" + "Use route peer AS as realm id\n") + +DEFUN (no_set_realm, + no_set_realm_cmd, + "no set realm", + NO_STR + SET_STR + "Realm value(s) for Linux FIB routes\n") +{ + if (argc == 0) + return bgp_route_set_delete (vty, vty->index, "realm", NULL); + + return bgp_route_set_delete (vty, vty->index, "realm", argv[0]); +} + +ALIAS (no_set_realm, + no_set_realm_val_cmd, + "no set realm (<0-255>|WORD)", + NO_STR + SET_STR + "Realm value(s) for Linux FIB routes\n" + "Realm value\n" + "Realm name\n") + +ALIAS (no_set_realm, + no_set_realm_origin_peer_cmd, + "no set realm (origin-as|peer-as)", + NO_STR + SET_STR + "Realm value(s) for Linux FIB routes\n" + "Origin AS - realm\n" + "Peer AS - realm\n") + +#endif + DEFUN (set_local_pref, set_local_pref_cmd, "set local-preference <0-4294967295>", @@ -3554,6 +3713,10 @@ bgp_route_map_init (void) route_map_install_set (&route_set_local_pref_cmd); route_map_install_set (&route_set_weight_cmd); route_map_install_set (&route_set_metric_cmd); +#ifdef SUPPORT_REALMS + route_map_install_set (&route_set_realm_cmd); + +#endif route_map_install_set (&route_set_aspath_prepend_cmd); route_map_install_set (&route_set_origin_cmd); route_map_install_set (&route_set_atomic_aggregate_cmd); @@ -3622,6 +3785,13 @@ bgp_route_map_init (void) install_element (RMAP_NODE, &set_metric_addsub_cmd); install_element (RMAP_NODE, &no_set_metric_cmd); install_element (RMAP_NODE, &no_set_metric_val_cmd); +#ifdef SUPPORT_REALMS + install_element (RMAP_NODE, &set_realm_cmd); + install_element (RMAP_NODE, &set_realm_origin_peer_cmd); + install_element (RMAP_NODE, &no_set_realm_cmd); + install_element (RMAP_NODE, &no_set_realm_val_cmd); + install_element (RMAP_NODE, &no_set_realm_origin_peer_cmd); +#endif install_element (RMAP_NODE, &set_aspath_prepend_cmd); install_element (RMAP_NODE, &no_set_aspath_prepend_cmd); install_element (RMAP_NODE, &no_set_aspath_prepend_val_cmd); |