diff options
| author | Ondrej Zajicek (work) <santiago@crfreenet.org> | 2019-02-13 15:40:22 +0100 |
|---|---|---|
| committer | Ondrej Zajicek (work) <santiago@crfreenet.org> | 2019-02-13 15:53:36 +0100 |
| commit | 4a3f5b36173299d44e26dc18db4e5d103875f8c4 (patch) | |
| tree | 32dc2a83fb27d8d52a2dacba28edf295575aa520 /proto/ospf/lsalib.c | |
| parent | 1e958e52d3ef0c38e5fb5e673bcce95d1c28ac0e (diff) | |
OSPF: Basic support for DN-bit handling (RFC 4576)
External LSAs originated by OSPF routers with VPN-PE behavior enabled are
marked by DN flag and they are ignored by other OSPF routers with VPN-PE
enabled.
Diffstat (limited to 'proto/ospf/lsalib.c')
| -rw-r--r-- | proto/ospf/lsalib.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/proto/ospf/lsalib.c b/proto/ospf/lsalib.c index e66d3dc0..7ddf64e3 100644 --- a/proto/ospf/lsalib.c +++ b/proto/ospf/lsalib.c @@ -336,9 +336,10 @@ lsa_parse_sum_net(struct top_hash_entry *en, int ospf2, int af, net_addr *net, u { if (ospf2) { + uint opts = lsa_get_options(&en->lsa); struct ospf_lsa_sum2 *ls = en->lsa_body; net_fill_ip4(net, ip4_from_u32(en->lsa.id & ls->netmask), u32_masklen(ls->netmask)); - *pxopts = 0; + *pxopts = (opts & OPT_DN) ? OPT_PX_DN : 0; *metric = ls->metric & LSA_METRIC_MASK; } else @@ -386,6 +387,7 @@ lsa_parse_ext(struct top_hash_entry *en, int ospf2, int af, struct ospf_lsa_ext_ rt->tag = ext->tag; rt->propagate = lsa_get_options(&en->lsa) & OPT_P; + rt->downwards = lsa_get_options(&en->lsa) & OPT_DN; } else { @@ -402,6 +404,7 @@ lsa_parse_ext(struct top_hash_entry *en, int ospf2, int af, struct ospf_lsa_ext_ rt->tag = (ext->metric & LSA_EXT3_TBIT) ? *buf++ : 0; rt->propagate = rt->pxopts & OPT_PX_P; + rt->downwards = rt->pxopts & OPT_PX_DN; } } |