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Diffstat (limited to '')
| -rw-r--r-- | isisd/isis_te.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/isisd/isis_te.h b/isisd/isis_te.h new file mode 100644 index 0000000..0352596 --- /dev/null +++ b/isisd/isis_te.h @@ -0,0 +1,135 @@ +/* + * IS-IS Rout(e)ing protocol - isis_te.c + * + * This is an implementation of RFC5305, RFC 5307 and RFC 7810 + * + * Author: Olivier Dugeon <olivier.dugeon@orange.com> + * + * Copyright (C) 2014 - 2019 Orange Labs http://www.orange.com + * + * 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 this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _ZEBRA_ISIS_MPLS_TE_H +#define _ZEBRA_ISIS_MPLS_TE_H + +/* + * Traffic Engineering information are transport through LSP: + * - Extended IS Reachability TLV = 22 + * - Traffic Engineering Router ID TLV = 134 + * - Extended IP Reachability TLV = 135 + * - Inter-AS Reachability Information TLV = 141 + * + * and support following sub-TLV: + * + * Name Value Status + * _________________________________________________ + * Administartive group (color) 3 RFC5305 + * Link Local/Remote Identifiers 4 RFC5307 + * IPv4 interface address 6 RFC5305 + * IPv4 neighbor address 8 RFC5305 + * Maximum link bandwidth 9 RFC5305 + * Reservable link bandwidth 10 RFC5305 + * Unreserved bandwidth 11 RFC5305 + * TE Default metric 18 RFC5305 + * Link Protection Type 20 RFC5307 + * Interface Switching Capability 21 RFC5307 + * Remote AS number 24 RFC5316 + * IPv4 Remote ASBR identifier 25 RFC5316 + * + * NOTE: RFC5316 is not fully supported in this version + * only subTLVs decoding is provided + */ + +/* Following define the type of TE link regarding the various RFC */ +#define STD_TE 0x01 +#define GMPLS 0x02 +#define INTER_AS 0x04 +#define FLOOD_L1 0x10 +#define FLOOD_L2 0x20 +#define FLOOD_AS 0x40 +#define EMULATED 0x80 + +#define IS_STD_TE(x) (x & STD_TE) +#define IS_INTER_AS(x) (x & INTER_AS) +#define IS_EMULATED(x) (x & EMULATED) +#define IS_FLOOD_L1(x) (x & FLOOD_L1) +#define IS_FLOOD_L2(x) (x & FLOOD_L2) +#define IS_FLOOD_AS(x) (x & FLOOD_AS) +#define IS_INTER_AS_EMU(x) (x & INTER_AS & EMULATED) +#define IS_INTER_AS_AS(x) (x & INTER_AS & FLOOD_AS) + +/* + * Note (since release 7.2), subTLVs definition, serialization + * and de-serialization have mode to isis_tlvs.[c,h] + */ + +/* Following declaration concerns the MPLS-TE and LINk-TE management */ +typedef enum _status_t { disable, enable, learn } status_t; + +/* Mode for Inter-AS LSP */ /* TODO: Check how if LSP is flooded in RFC5316 */ +typedef enum _interas_mode_t { off, region, as, emulate } interas_mode_t; + +#define IS_EXT_TE(e) (e && e->status != 0 \ + && e->status != EXT_ADJ_SID \ + && e->status != EXT_LAN_ADJ_SID) +#define IS_MPLS_TE(a) (a && a->status == enable) +#define IS_EXPORT_TE(a) (a->export) + +/* Per area MPLS-TE parameters */ +struct ls_ted; +struct mpls_te_area { + /* Status of MPLS-TE: enable or disable */ + status_t status; + + /* L1, L1-L2, L2-Only */ + uint8_t level; + + /* RFC5316 */ + interas_mode_t inter_as; + struct in_addr interas_areaid; + + /* MPLS_TE IPv4 & IPv6 Router IDs */ + struct in_addr router_id; + struct in6_addr router_id_ipv6; + + /* Link State Database */ + struct ls_ted *ted; + bool export; +}; + +/* Structure to provide parameters to lsp iterate callback function */ +struct isis_te_args { + struct ls_ted *ted; + struct ls_vertex *vertex; + bool export; +}; + +enum lsp_event { LSP_UNKNOWN, LSP_ADD, LSP_UPD, LSP_DEL, LSP_INC, LSP_TICK }; + +/* Prototypes. */ +void isis_mpls_te_init(void); +void isis_mpls_te_create(struct isis_area *area); +void isis_mpls_te_disable(struct isis_area *area); +void isis_mpls_te_term(struct isis_area *area); +void isis_link_params_update(struct isis_circuit *, struct interface *); +int isis_mpls_te_update(struct interface *); +void isis_te_lsp_event(struct isis_lsp *lsp, enum lsp_event event); +int isis_te_sync_ted(struct zapi_opaque_reg_info dst); +void isis_te_init_ted(struct isis_area *area); + +#endif /* _ZEBRA_ISIS_MPLS_TE_H */ |