diff options
| author | Michele Marchetto <michele@cvs.openbsd.org> | 2010-01-08 16:45:52 +0000 |
|---|---|---|
| committer | Michele Marchetto <michele@cvs.openbsd.org> | 2010-01-08 16:45:52 +0000 |
| commit | 03a3fb24a43b3ba804455a763bf821cdb67a4544 (patch) | |
| tree | bc7cfb5846630203daa070e074c3fe829b72eec1 | |
| parent | fafeb6e6bc1e1174c1da901a8295669be0ad8088 (diff) | |
Implement section A.1.6 of RFC 5036: "Recognize new FEC".
When a new prefix is learnt, redistribute the local label associated with
it to the other connected peers.
ok claudio@
| -rw-r--r-- | usr.sbin/ldpd/lde_lib.c | 51 |
1 files changed, 39 insertions, 12 deletions
diff --git a/usr.sbin/ldpd/lde_lib.c b/usr.sbin/ldpd/lde_lib.c index 7a4b319c685..a4274ca2d20 100644 --- a/usr.sbin/ldpd/lde_lib.c +++ b/usr.sbin/ldpd/lde_lib.c @@ -1,4 +1,4 @@ -/* $OpenBSD: lde_lib.c,v 1.7 2010/01/02 14:56:02 michele Exp $ */ +/* $OpenBSD: lde_lib.c,v 1.8 2010/01/08 16:45:51 michele Exp $ */ /* * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org> @@ -176,7 +176,10 @@ lde_kernel_insert(struct kroute *kr) { struct rt_node *rn; struct rt_label *rl; + struct iface *iface; + struct lde_nbr *ln; struct lde_nbr_address *addr; + struct map localmap; rn = rt_find(kr->prefix.s_addr, kr->prefixlen); if (rn == NULL) { @@ -230,18 +233,16 @@ lde_kernel_insert(struct kroute *kr) return; } - /* There is already a local mapping, check if there - is also a remote one */ - if (rn->local_label) { - TAILQ_FOREACH(rl, &rn->labels_list, entry) { - addr = lde_address_find(rl->nexthop, &rn->nexthop); - if (addr != NULL) { - rn->remote_label = - htonl(rl->label << MPLS_LABEL_OFFSET); - break; - } + TAILQ_FOREACH(rl, &rn->labels_list, entry) { + addr = lde_address_find(rl->nexthop, &rn->nexthop); + if (addr != NULL) { + rn->remote_label = + htonl(rl->label << MPLS_LABEL_OFFSET); + break; } - } else { + } + + if (!rn->local_label) { /* Directly connected route */ if (kr->nexthop.s_addr == INADDR_ANY) { rn->local_label = @@ -252,6 +253,32 @@ lde_kernel_insert(struct kroute *kr) } lde_send_insert_klabel(rn); + + /* Redistribute the current mapping to every nbr */ + localmap.label = (ntohl(rn->local_label) & MPLS_LABEL_MASK) >> + MPLS_LABEL_OFFSET; + localmap.prefix = rn->prefix.s_addr; + localmap.prefixlen = rn->prefixlen; + + LIST_FOREACH(iface, &ldeconf->iface_list, entry) { + LIST_FOREACH(ln, &iface->lde_nbr_list, entry) { + if (ln->self) + continue; + + if (ldeconf->mode & MODE_ADV_UNSOLICITED && + ldeconf->mode & MODE_DIST_INDEPENDENT) + lde_send_labelmapping(ln->peerid, &localmap); + + if (ldeconf->mode & MODE_ADV_UNSOLICITED && + ldeconf->mode & MODE_DIST_ORDERED) { + /* XXX */ + if (rn->nexthop.s_addr == INADDR_ANY || + rn->remote_label != 0) + lde_send_labelmapping(ln->peerid, + &localmap); + } + } + } } void |