From 718e3744195351130f4ce7dbe0613f4b3e23df93 Mon Sep 17 00:00:00 2001 From: paul Date: Fri, 13 Dec 2002 20:15:29 +0000 Subject: Initial revision --- ospfd/ospf_te.h | 193 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 193 insertions(+) create mode 100644 ospfd/ospf_te.h (limited to 'ospfd/ospf_te.h') diff --git a/ospfd/ospf_te.h b/ospfd/ospf_te.h new file mode 100644 index 00000000..8a7a98c7 --- /dev/null +++ b/ospfd/ospf_te.h @@ -0,0 +1,193 @@ +/* + * This is an implementation of draft-katz-yeung-ospf-traffic-06.txt + * Copyright (C) 2001 KDD R&D Laboratories, Inc. + * http://www.kddlabs.co.jp/ + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Zebra; see the file COPYING. If not, write to the Free + * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ + +#ifndef _ZEBRA_OSPF_MPLS_TE_H +#define _ZEBRA_OSPF_MPLS_TE_H + +/* + * Opaque LSA's link state ID for Traffic Engineering is + * structured as follows. + * + * 24 16 8 0 + * +--------+--------+--------+--------+ + * | 1 | MBZ |........|........| + * +--------+--------+--------+--------+ + * |<-Type->||<-- Instance --->| + * + * + * Type: IANA has assigned '1' for Traffic Engineering. + * MBZ: Reserved, must be set to zero. + * Instance: User may select an arbitrary 16-bit value. + * + */ + +#define LEGAL_TE_INSTANCE_RANGE(i) (0 <= (i) && (i) <= 0xffff) + +/* + * 24 16 8 0 + * +--------+--------+--------+--------+ --- + * | LS age |Options | 10 | A + * +--------+--------+--------+--------+ | + * | 1 | 0 | Instance | | + * +--------+--------+--------+--------+ | + * | Advertising router | | Standard (Opaque) LSA header; + * +--------+--------+--------+--------+ | Only type-10 is used. + * | LS sequence number | | + * +--------+--------+--------+--------+ | + * | LS checksum | Length | V + * +--------+--------+--------+--------+ --- + * | Type | Length | A + * +--------+--------+--------+--------+ | TLV part for TE; Values might be + * | Values ... | V structured as a set of sub-TLVs. + * +--------+--------+--------+--------+ --- + */ + +/* + * Following section defines TLV (tag, length, value) structures, + * used for Traffic Engineering. + */ +struct te_tlv_header +{ + u_int16_t type; /* TE_TLV_XXX (see below) */ + u_int16_t length; /* Value portion only, in octets */ +}; + +#define TLV_HDR_SIZE \ + sizeof (struct te_tlv_header) + +#define TLV_BODY_SIZE(tlvh) \ + ROUNDUP (ntohs ((tlvh)->length), sizeof (u_int32_t)) + +#define TLV_SIZE(tlvh) \ + (TLV_HDR_SIZE + TLV_BODY_SIZE(tlvh)) + +#define TLV_HDR_TOP(lsah) \ + (struct te_tlv_header *)((char *)(lsah) + OSPF_LSA_HEADER_SIZE) + +#define TLV_HDR_NEXT(tlvh) \ + (struct te_tlv_header *)((char *)(tlvh) + TLV_SIZE(tlvh)) + +/* + * Following section defines TLV body parts. + */ +/* Router Address TLV *//* Mandatory */ +#define TE_TLV_ROUTER_ADDR 1 +struct te_tlv_router_addr +{ + struct te_tlv_header header; /* Value length is 4 octets. */ + struct in_addr value; +}; + +/* Link TLV */ +#define TE_TLV_LINK 2 +struct te_tlv_link +{ + struct te_tlv_header header; + /* A set of link-sub-TLVs will follow. */ +}; + +/* Link Type Sub-TLV *//* Mandatory */ +#define TE_LINK_SUBTLV_LINK_TYPE 1 +struct te_link_subtlv_link_type +{ + struct te_tlv_header header; /* Value length is 1 octet. */ + struct { +#define LINK_TYPE_SUBTLV_VALUE_PTP 1 +#define LINK_TYPE_SUBTLV_VALUE_MA 2 + u_char value; + u_char padding[3]; + } link_type; +}; + +/* Link Sub-TLV: Link ID *//* Mandatory */ +#define TE_LINK_SUBTLV_LINK_ID 2 +struct te_link_subtlv_link_id +{ + struct te_tlv_header header; /* Value length is 4 octets. */ + struct in_addr value; /* Same as router-lsa's link-id. */ +}; + +/* Link Sub-TLV: Local Interface IP Address *//* Optional */ +#define TE_LINK_SUBTLV_LCLIF_IPADDR 3 +struct te_link_subtlv_lclif_ipaddr +{ + struct te_tlv_header header; /* Value length is 4 x N octets. */ + struct in_addr value[1]; /* Local IP address(es). */ +}; + +/* Link Sub-TLV: Remote Interface IP Address *//* Optional */ +#define TE_LINK_SUBTLV_RMTIF_IPADDR 4 +struct te_link_subtlv_rmtif_ipaddr +{ + struct te_tlv_header header; /* Value length is 4 x N octets. */ + struct in_addr value[1]; /* Neighbor's IP address(es). */ +}; + +/* Link Sub-TLV: Traffic Engineering Metric *//* Optional */ +#define TE_LINK_SUBTLV_TE_METRIC 5 +struct te_link_subtlv_te_metric +{ + struct te_tlv_header header; /* Value length is 4 octets. */ + u_int32_t value; /* Link metric for TE purpose. */ +}; + +/* Link Sub-TLV: Maximum Bandwidth *//* Optional */ +#define TE_LINK_SUBTLV_MAX_BW 6 +struct te_link_subtlv_max_bw +{ + struct te_tlv_header header; /* Value length is 4 octets. */ + float value; /* bytes/sec */ +}; + +/* Link Sub-TLV: Maximum Reservable Bandwidth *//* Optional */ +#define TE_LINK_SUBTLV_MAX_RSV_BW 7 +struct te_link_subtlv_max_rsv_bw +{ + struct te_tlv_header header; /* Value length is 4 octets. */ + float value; /* bytes/sec */ +}; + +/* Link Sub-TLV: Unreserved Bandwidth *//* Optional */ +#define TE_LINK_SUBTLV_UNRSV_BW 8 +struct te_link_subtlv_unrsv_bw +{ + struct te_tlv_header header; /* Value length is 32 octets. */ + float value[8]; /* One for each priority level. */ +}; + +/* Link Sub-TLV: Resource Class/Color *//* Optional */ +#define TE_LINK_SUBTLV_RSC_CLSCLR 9 +struct te_link_subtlv_rsc_clsclr +{ + struct te_tlv_header header; /* Value length is 4 octets. */ + u_int32_t value; /* Admin. group membership. */ +}; + +/* Here are "non-official" architechtual constants. */ +#define MPLS_TE_MINIMUM_BANDWIDTH 1.0 /* Reasonable? *//* XXX */ + +/* Prototypes. */ +extern int ospf_mpls_te_init (void); +extern void ospf_mpls_te_term (void); + +#endif /* _ZEBRA_OSPF_MPLS_TE_H */ -- cgit v1.2.1