diff options
| author | Ondrej Zajicek <santiago@crfreenet.org> | 2013-10-21 14:58:32 +0200 |
|---|---|---|
| committer | Ondrej Zajicek <santiago@crfreenet.org> | 2013-10-21 14:59:35 +0200 |
| commit | a15dab76f93337b07b4b03a64ac3bac26285dfd9 (patch) | |
| tree | ef2593148938733814a8b4b1a6fceb60e5c30886 /proto | |
| parent | f8cc7396cf25328b002394bbd7af679188b03370 (diff) | |
Implements 'allow local as' option.
Similar to allowas-in option on other routers.
Diffstat (limited to 'proto')
| -rw-r--r-- | proto/bgp/attrs.c | 3 | ||||
| -rw-r--r-- | proto/bgp/bgp.h | 1 | ||||
| -rw-r--r-- | proto/bgp/config.Y | 4 |
3 files changed, 6 insertions, 2 deletions
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c index c27a4988..8e25c4d2 100644 --- a/proto/bgp/attrs.c +++ b/proto/bgp/attrs.c @@ -950,8 +950,9 @@ bgp_create_attrs(struct bgp_proto *p, rte *e, ea_list **attrs, struct linpool *p static inline int bgp_as_path_loopy(struct bgp_proto *p, rta *a) { + int num = p->cf->allow_local_as + 1; eattr *e = ea_find(a->eattrs, EA_CODE(EAP_BGP, BA_AS_PATH)); - return (e && as_path_is_member(e->u.ptr, p->local_as)); + return (e && (num > 0) && as_path_contains(e->u.ptr, p->local_as, num)); } static inline int diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h index 77a36715..bcbdf2cc 100644 --- a/proto/bgp/bgp.h +++ b/proto/bgp/bgp.h @@ -44,6 +44,7 @@ struct bgp_config { int passive; /* Do not initiate outgoing connection */ int interpret_communities; /* Hardwired handling of well-known communities */ int secondary; /* Accept also non-best routes (i.e. RA_ACCEPTED) */ + int allow_local_as; /* Allow that number of local ASNs in incoming AS_PATHs */ unsigned connect_retry_time; unsigned hold_time, initial_hold_time; unsigned keepalive_time; diff --git a/proto/bgp/config.Y b/proto/bgp/config.Y index d5e5aaca..f4b2c5fe 100644 --- a/proto/bgp/config.Y +++ b/proto/bgp/config.Y @@ -26,7 +26,7 @@ CF_KEYWORDS(BGP, LOCAL, NEIGHBOR, AS, HOLD, TIME, CONNECT, RETRY, PREFER, OLDER, MISSING, LLADDR, DROP, IGNORE, ROUTE, REFRESH, INTERPRET, COMMUNITIES, BGP_ORIGINATOR_ID, BGP_CLUSTER_LIST, IGP, TABLE, GATEWAY, DIRECT, RECURSIVE, MED, TTL, SECURITY, DETERMINISTIC, - SECONDARY) + SECONDARY, ALLOW) CF_GRAMMAR @@ -108,6 +108,8 @@ bgp_proto: | bgp_proto PASSIVE bool ';' { BGP_CFG->passive = $3; } | bgp_proto INTERPRET COMMUNITIES bool ';' { BGP_CFG->interpret_communities = $4; } | bgp_proto SECONDARY bool ';' { BGP_CFG->secondary = $3; } + | bgp_proto ALLOW LOCAL AS ';' { BGP_CFG->allow_local_as = -1; } + | bgp_proto ALLOW LOCAL AS expr ';' { BGP_CFG->allow_local_as = $5; } | bgp_proto IGP TABLE rtable ';' { BGP_CFG->igp_table = $4; } | bgp_proto TTL SECURITY bool ';' { BGP_CFG->ttl_security = $4; } ; |