diff options
| author | Renato Westphal <renato@opensourcerouting.org> | 2017-03-03 17:50:22 -0300 |
|---|---|---|
| committer | Renato Westphal <renato@opensourcerouting.org> | 2017-03-03 17:50:22 -0300 |
| commit | 257799cdb69707f7bea43b118c9787458d1d81ba (patch) | |
| tree | f3ded89e87ac55271d14630c5918ea48116cd4a0 /ldpd/labelmapping.c | |
| parent | aba50a83ea59e20bb23929f817560625153a0e25 (diff) | |
ldpd: implement RFC 5919 (LDP End-of-LIB)
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
Diffstat (limited to 'ldpd/labelmapping.c')
| -rw-r--r-- | ldpd/labelmapping.c | 72 |
1 files changed, 42 insertions, 30 deletions
diff --git a/ldpd/labelmapping.c b/ldpd/labelmapping.c index 55b890ac70..75acfd7d50 100644 --- a/ldpd/labelmapping.c +++ b/ldpd/labelmapping.c @@ -72,36 +72,8 @@ send_labelmessage(struct nbr *nbr, uint16_t type, struct mapping_head *mh) } /* calculate size */ - msg_size = LDP_MSG_SIZE + TLV_HDR_SIZE; - switch (me->map.type) { - case MAP_TYPE_WILDCARD: - msg_size += FEC_ELM_WCARD_LEN; - break; - case MAP_TYPE_PREFIX: - msg_size += FEC_ELM_PREFIX_MIN_LEN + - PREFIX_SIZE(me->map.fec.prefix.prefixlen); - break; - case MAP_TYPE_PWID: - msg_size += FEC_PWID_ELM_MIN_LEN; - if (me->map.flags & F_MAP_PW_ID) - msg_size += PW_STATUS_TLV_LEN; - if (me->map.flags & F_MAP_PW_IFMTU) - msg_size += FEC_SUBTLV_IFMTU_SIZE; - if (me->map.flags & F_MAP_PW_STATUS) - msg_size += PW_STATUS_TLV_SIZE; - break; - case MAP_TYPE_TYPED_WCARD: - msg_size += FEC_ELM_TWCARD_MIN_LEN; - switch (me->map.fec.twcard.type) { - case MAP_TYPE_PREFIX: - case MAP_TYPE_PWID: - msg_size += sizeof(uint16_t); - break; - default: - fatalx("send_labelmessage: unexpected fec type"); - } - break; - } + msg_size = LDP_MSG_SIZE; + msg_size += len_fec_tlv(&me->map); if (me->map.label != NO_LABEL) msg_size += LABEL_TLV_SIZE; if (me->map.flags & F_MAP_REQ_ID) @@ -548,6 +520,46 @@ gen_pw_status_tlv(struct ibuf *buf, uint32_t status) return (ibuf_add(buf, &st, sizeof(st))); } +uint16_t +len_fec_tlv(struct map *map) +{ + uint16_t len = TLV_HDR_SIZE; + + switch (map->type) { + case MAP_TYPE_WILDCARD: + len += FEC_ELM_WCARD_LEN; + break; + case MAP_TYPE_PREFIX: + len += FEC_ELM_PREFIX_MIN_LEN + + PREFIX_SIZE(map->fec.prefix.prefixlen); + break; + case MAP_TYPE_PWID: + len += FEC_PWID_ELM_MIN_LEN; + if (map->flags & F_MAP_PW_ID) + len += PW_STATUS_TLV_LEN; + if (map->flags & F_MAP_PW_IFMTU) + len += FEC_SUBTLV_IFMTU_SIZE; + if (map->flags & F_MAP_PW_STATUS) + len += PW_STATUS_TLV_SIZE; + break; + case MAP_TYPE_TYPED_WCARD: + len += FEC_ELM_TWCARD_MIN_LEN; + switch (map->fec.twcard.type) { + case MAP_TYPE_PREFIX: + case MAP_TYPE_PWID: + len += sizeof(uint16_t); + break; + default: + fatalx("len_fec_tlv: unexpected fec type"); + } + break; + default: + fatalx("len_fec_tlv: unexpected fec type"); + } + + return (len); +} + int gen_fec_tlv(struct ibuf *buf, struct map *map) { |