diff options
Diffstat (limited to 'bgpd/bgp_attr.c')
| -rw-r--r-- | bgpd/bgp_attr.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c index 53420b4..40e074d 100644 --- a/bgpd/bgp_attr.c +++ b/bgpd/bgp_attr.c @@ -1518,6 +1518,7 @@ static bool bgp_attr_flag_invalid(struct bgp_attr_parser_args *args) uint8_t mask = BGP_ATTR_FLAG_EXTLEN; const uint8_t flags = args->flags; const uint8_t attr_code = args->type; + struct peer *peer = args->peer; /* there may be attributes we don't know about */ if (attr_code > attr_flags_values_max) @@ -1525,6 +1526,14 @@ static bool bgp_attr_flag_invalid(struct bgp_attr_parser_args *args) if (attr_flags_values[attr_code] == 0) return false; + /* If `neighbor X path-attribute <discard|treat-as-withdraw>` is + * configured, then ignore checking optional, trasitive flags. + * The attribute/route will be discarded/withdrawned later instead + * of dropping the session. + */ + if (peer->discard_attrs[attr_code] || peer->withdraw_attrs[attr_code]) + return false; + /* RFC4271, "For well-known attributes, the Transitive bit MUST be set * to * 1." |