mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-10-31 21:46:33 +00:00
323 lines
11 KiB
C
323 lines
11 KiB
C
/*
|
|
* IS-IS Rout(e)ing protocol - isis_te.c
|
|
*
|
|
* This is an implementation of RFC5305, RFC 5307 and RFC 7810
|
|
*
|
|
* Copyright (C) 2014 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 yet supported in this version */
|
|
|
|
/* 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)
|
|
|
|
/*
|
|
* Following section defines subTLV (tag, length, value) structures,
|
|
* used for Traffic Engineering.
|
|
*/
|
|
struct subtlv_header {
|
|
u_char type; /* sub_TLV_XXX type (see above) */
|
|
u_char length; /* Value portion only, in byte */
|
|
};
|
|
|
|
#define MAX_SUBTLV_SIZE 256
|
|
|
|
#define SUBTLV_HDR_SIZE 2 /* (sizeof (struct sub_tlv_header)) */
|
|
|
|
#define SUBTLV_SIZE(stlvh) (SUBTLV_HDR_SIZE + (stlvh)->length)
|
|
|
|
#define SUBTLV_HDR_TOP(lsph) (struct subtlv_header *)((char *)(lsph) + ISIS_LSP_HEADER_SIZE)
|
|
|
|
#define SUBTLV_HDR_NEXT(stlvh) (struct subtlv_header *)((char *)(stlvh) + SUBTLV_SIZE(stlvh))
|
|
|
|
#define SUBTLV_TYPE(stlvh) stlvh.header.type
|
|
#define SUBTLV_LEN(stlvh) stlvh.header.length
|
|
#define SUBTLV_VAL(stlvh) stlvh.value
|
|
#define SUBTLV_DATA(stlvh) stlvh + SUBTLV_HDR_SIZE
|
|
|
|
#define SUBTLV_DEF_SIZE 4
|
|
|
|
/* Link Sub-TLV: Resource Class/Color - RFC 5305 */
|
|
#define TE_SUBTLV_ADMIN_GRP 3
|
|
struct te_subtlv_admin_grp {
|
|
struct subtlv_header header; /* Value length is 4 octets. */
|
|
u_int32_t value; /* Admin. group membership. */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Local/Remote Identifiers - RFC 5307 */
|
|
#define TE_SUBTLV_LLRI 4
|
|
#define TE_SUBTLV_LLRI_SIZE 8
|
|
struct te_subtlv_llri {
|
|
struct subtlv_header header; /* Value length is 8 octets. */
|
|
u_int32_t local; /* Link Local Identifier */
|
|
u_int32_t remote; /* Link Remote Identifier */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Local Interface IP Address - RFC 5305 */
|
|
#define TE_SUBTLV_LOCAL_IPADDR 6
|
|
struct te_subtlv_local_ipaddr {
|
|
struct subtlv_header header; /* Value length is 4 x N octets. */
|
|
struct in_addr value; /* Local IP address(es). */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Neighbor Interface IP Address - RFC 5305 */
|
|
#define TE_SUBTLV_RMT_IPADDR 8
|
|
struct te_subtlv_rmt_ipaddr {
|
|
struct subtlv_header header; /* Value length is 4 x N octets. */
|
|
struct in_addr value; /* Neighbor's IP address(es). */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Maximum Bandwidth - RFC 5305 */
|
|
#define TE_SUBTLV_MAX_BW 9
|
|
struct te_subtlv_max_bw {
|
|
struct subtlv_header header; /* Value length is 4 octets. */
|
|
float value; /* bytes/sec */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Maximum Reservable Bandwidth - RFC 5305 */
|
|
#define TE_SUBTLV_MAX_RSV_BW 10
|
|
struct te_subtlv_max_rsv_bw {
|
|
struct subtlv_header header; /* Value length is 4 octets. */
|
|
float value; /* bytes/sec */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Unreserved Bandwidth - RFC 5305 */
|
|
#define TE_SUBTLV_UNRSV_BW 11
|
|
#define TE_SUBTLV_UNRSV_SIZE 32
|
|
struct te_subtlv_unrsv_bw {
|
|
struct subtlv_header header; /* Value length is 32 octets. */
|
|
float value[8]; /* One for each priority level. */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Traffic Engineering Metric - RFC 5305 */
|
|
#define TE_SUBTLV_TE_METRIC 18
|
|
#define TE_SUBTLV_TE_METRIC_SIZE 3
|
|
struct te_subtlv_te_metric {
|
|
struct subtlv_header header; /* Value length is 4 octets. */
|
|
u_char value[3]; /* Link metric for TE purpose. */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Remote AS Number sub-TLV - RFC5316 */
|
|
#define TE_SUBTLV_RAS 24
|
|
struct te_subtlv_ras {
|
|
struct subtlv_header header; /* Value length is 4 octets. */
|
|
u_int32_t value; /* Remote AS number */
|
|
} __attribute__((__packed__));
|
|
|
|
/* IPv4 Remote ASBR ID Sub-TLV - RFC5316 */
|
|
#define TE_SUBTLV_RIP 25
|
|
struct te_subtlv_rip {
|
|
struct subtlv_header header; /* Value length is 4 octets. */
|
|
struct in_addr value; /* Remote ASBR IP address */
|
|
} __attribute__((__packed__));
|
|
|
|
|
|
/* TE Metric Extensions - RFC 7810 */
|
|
/* Link Sub-TLV: Average Link Delay */
|
|
#define TE_SUBTLV_AV_DELAY 33
|
|
struct te_subtlv_av_delay {
|
|
struct subtlv_header header; /* Value length is 4 bytes. */
|
|
u_int32_t value; /* Average delay in micro-seconds only 24 bits => 0 ...
|
|
16777215
|
|
with Anomalous Bit (A) as Upper most bit */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Low/High Link Delay */
|
|
#define TE_SUBTLV_MM_DELAY 34
|
|
#define TE_SUBTLV_MM_DELAY_SIZE 8
|
|
struct te_subtlv_mm_delay {
|
|
struct subtlv_header header; /* Value length is 8 bytes. */
|
|
u_int32_t low; /* low delay in micro-seconds only 24 bits => 0 ...
|
|
16777215
|
|
with Anomalous Bit (A) as Upper most bit */
|
|
u_int32_t high; /* high delay in micro-seconds only 24 bits => 0 ...
|
|
16777215 */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Link Delay Variation i.e. Jitter */
|
|
#define TE_SUBTLV_DELAY_VAR 35
|
|
struct te_subtlv_delay_var {
|
|
struct subtlv_header header; /* Value length is 4 bytes. */
|
|
u_int32_t value; /* interval in micro-seconds only 24 bits => 0 ...
|
|
16777215 */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Routine Unidirectional Link Packet Loss */
|
|
#define TE_SUBTLV_PKT_LOSS 36
|
|
struct te_subtlv_pkt_loss {
|
|
struct subtlv_header header; /* Value length is 4 bytes. */
|
|
u_int32_t
|
|
value; /* in percentage of total traffic only 24 bits (2^24 - 2)
|
|
with Anomalous Bit (A) as Upper most bit */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Unidirectional Residual Bandwidth */ /* Optional */
|
|
#define TE_SUBTLV_RES_BW 37
|
|
struct te_subtlv_res_bw {
|
|
struct subtlv_header header; /* Value length is 4 bytes. */
|
|
float value; /* bandwidth in IEEE floating point format with units in
|
|
bytes per second */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Unidirectional Available Bandwidth */ /* Optional */
|
|
#define TE_SUBTLV_AVA_BW 38
|
|
struct te_subtlv_ava_bw {
|
|
struct subtlv_header header; /* Value length is 4 octets. */
|
|
float value; /* bandwidth in IEEE floating point format with units in
|
|
bytes per second */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Link Sub-TLV: Unidirectional Utilized Bandwidth */ /* Optional */
|
|
#define TE_SUBTLV_USE_BW 39
|
|
struct te_subtlv_use_bw {
|
|
struct subtlv_header header; /* Value length is 4 octets. */
|
|
float value; /* bandwidth in IEEE floating point format with units in
|
|
bytes per second */
|
|
} __attribute__((__packed__));
|
|
|
|
#define TE_SUBTLV_MAX 40 /* Last SUBTLV + 1 */
|
|
|
|
/* 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_MPLS_TE(m) (m.status == enable)
|
|
#define IS_CIRCUIT_TE(c) (c->status == enable)
|
|
|
|
/* Following structure are internal use only. */
|
|
struct isis_mpls_te {
|
|
/* Status of MPLS-TE: enable or disable */
|
|
status_t status;
|
|
|
|
/* L1, L1-L2, L2-Only */
|
|
u_int8_t level;
|
|
|
|
/* RFC5316 */
|
|
interas_mode_t inter_as;
|
|
struct in_addr interas_areaid;
|
|
|
|
/* Circuit list on which TE are enable */
|
|
struct list *cir_list;
|
|
|
|
/* MPLS_TE router ID */
|
|
struct in_addr router_id;
|
|
};
|
|
|
|
extern struct isis_mpls_te isisMplsTE;
|
|
|
|
struct mpls_te_circuit {
|
|
|
|
/* Status of MPLS-TE on this interface */
|
|
status_t status;
|
|
|
|
/* Type of MPLS-TE circuit: STD_TE(RFC5305), INTER_AS(RFC5316),
|
|
* INTER_AS_EMU(RFC5316 emulated) */
|
|
u_int8_t type;
|
|
|
|
/* Total size of sub_tlvs */
|
|
u_char length;
|
|
|
|
/* Store subTLV in network byte order. */
|
|
/* RFC5305 */
|
|
struct te_subtlv_admin_grp admin_grp;
|
|
/* RFC5307 */
|
|
struct te_subtlv_llri llri;
|
|
/* RFC5305 */
|
|
struct te_subtlv_local_ipaddr local_ipaddr;
|
|
struct te_subtlv_rmt_ipaddr rmt_ipaddr;
|
|
struct te_subtlv_max_bw max_bw;
|
|
struct te_subtlv_max_rsv_bw max_rsv_bw;
|
|
struct te_subtlv_unrsv_bw unrsv_bw;
|
|
struct te_subtlv_te_metric te_metric;
|
|
/* RFC5316 */
|
|
struct te_subtlv_ras ras;
|
|
struct te_subtlv_rip rip;
|
|
/* RFC7810 */
|
|
struct te_subtlv_av_delay av_delay;
|
|
struct te_subtlv_mm_delay mm_delay;
|
|
struct te_subtlv_delay_var delay_var;
|
|
struct te_subtlv_pkt_loss pkt_loss;
|
|
struct te_subtlv_res_bw res_bw;
|
|
struct te_subtlv_ava_bw ava_bw;
|
|
struct te_subtlv_use_bw use_bw;
|
|
};
|
|
|
|
/* Prototypes. */
|
|
void isis_mpls_te_init(void);
|
|
struct mpls_te_circuit *mpls_te_circuit_new(void);
|
|
struct sbuf;
|
|
void mpls_te_print_detail(struct sbuf *buf, int indent, uint8_t *subtlvs, uint8_t subtlv_len);
|
|
void set_circuitparams_local_ipaddr(struct mpls_te_circuit *, struct in_addr);
|
|
void set_circuitparams_rmt_ipaddr(struct mpls_te_circuit *, struct in_addr);
|
|
uint8_t subtlvs_len(struct mpls_te_circuit *);
|
|
uint8_t add_te_subtlvs(uint8_t *, struct mpls_te_circuit *);
|
|
uint8_t build_te_subtlvs(uint8_t *, struct isis_circuit *);
|
|
void isis_link_params_update(struct isis_circuit *, struct interface *);
|
|
void isis_mpls_te_update(struct interface *);
|
|
void isis_mpls_te_config_write_router(struct vty *);
|
|
|
|
#endif /* _ZEBRA_ISIS_MPLS_TE_H */
|