diff options
| -rw-r--r-- | doc/bird.sgml | 8 | ||||
| -rw-r--r-- | filter/config.Y | 3 | ||||
| -rw-r--r-- | filter/data.h | 1 | ||||
| -rw-r--r-- | filter/f-inst.c | 14 |
4 files changed, 23 insertions, 3 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml index 50657ebf..001fcbd4 100644 --- a/doc/bird.sgml +++ b/doc/bird.sgml @@ -1816,6 +1816,14 @@ Common route attributes are: creation/removal. Zero is returned for routes with undefined outgoing interfaces. Read-only. + <tag><label id="rta-onlink"><m/bool/ onlink</tag> + Onlink flag means that the specified nexthop is accessible on the + interface regardless of IP prefixes configured on the interface. + The attribute can be used to configure such next hops by first setting + <cf/onlink = true/ and <cf/ifname/, and then setting <cf/gw/. Possible + use case for setting this flag is to automatically build overlay IP-IP + networks on linux. + <tag><label id="rta-weight"><m/int/ weight</tag> Multipath weight of route next hops. Valid values are 1-256. Reading returns the weight of the first next hop, setting it sets weights of all diff --git a/filter/config.Y b/filter/config.Y index 1d9d9aa9..a1e5e9f1 100644 --- a/filter/config.Y +++ b/filter/config.Y @@ -305,7 +305,7 @@ CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN, IF, THEN, ELSE, CASE, FOR, IN, DO, TRUE, FALSE, RT, RO, UNKNOWN, GENERIC, - FROM, GW, NET, MASK, PROTO, SOURCE, SCOPE, DEST, IFNAME, IFINDEX, WEIGHT, GW_MPLS, + FROM, GW, NET, MASK, PROTO, SOURCE, SCOPE, DEST, IFNAME, IFINDEX, WEIGHT, GW_MPLS, ONLINK, PREFERENCE, ROA_CHECK, ASN, SRC, DST, IS_V4, IS_V6, @@ -795,6 +795,7 @@ static_attr: | WEIGHT { $$ = f_new_static_attr(T_INT, SA_WEIGHT, 0); } | PREFERENCE { $$ = f_new_static_attr(T_INT, SA_PREF, 0); } | GW_MPLS { $$ = f_new_static_attr(T_INT, SA_GW_MPLS, 0); } + | ONLINK { $$ = f_new_static_attr(T_BOOL, SA_ONLINK, 0); } ; term: diff --git a/filter/data.h b/filter/data.h index 700609e9..b3767f7b 100644 --- a/filter/data.h +++ b/filter/data.h @@ -102,6 +102,7 @@ enum f_sa_code { SA_WEIGHT, SA_PREF, SA_GW_MPLS, + SA_ONLINK, } PACKED; /* Static attribute definition (members of struct rta) */ diff --git a/filter/f-inst.c b/filter/f-inst.c index 2d2a30e4..e4b47ff4 100644 --- a/filter/f-inst.c +++ b/filter/f-inst.c @@ -694,6 +694,7 @@ case SA_WEIGHT: RESULT(sa.f_type, i, rta->nh.weight + 1); break; case SA_PREF: RESULT(sa.f_type, i, rta->pref); break; case SA_GW_MPLS: RESULT(sa.f_type, i, rta->nh.labels ? rta->nh.label[0] : MPLS_NULL); break; + case SA_ONLINK: RESULT(sa.f_type, i, rta->nh.flags & RNF_ONLINK ? 1 : 0); break; default: bug("Invalid static attribute access (%u/%u)", sa.f_type, sa.sa_code); @@ -720,8 +721,8 @@ case SA_GW: { ip_addr ip = v1.val.ip; - struct iface *ifa = ipa_is_link_local(ip) ? rta->nh.iface : NULL; - neighbor *n = neigh_find((*fs->rte)->src->proto, ip, ifa, 0); + struct iface *ifa = ipa_is_link_local(ip) || (rta->nh.flags & RNF_ONLINK) ? rta->nh.iface : NULL; + neighbor *n = neigh_find((*fs->rte)->src->proto, ip, ifa, (rta->nh.flags & RNF_ONLINK) ? NEF_ONLINK : 0); if (!n || (n->scope == SCOPE_HOST)) runtime( "Invalid gw address" ); @@ -801,6 +802,15 @@ rta->pref = v1.val.i; break; + case SA_ONLINK: + { + if (v1.val.i) + rta->nh.flags |= RNF_ONLINK; + else + rta->nh.flags &= ~RNF_ONLINK; + } + break; + default: bug("Invalid static attribute access (%u/%u)", sa.f_type, sa.sa_code); } |