*
* This is an implementation of RFC5305, RFC 5307 and RFC 7810
*
- * Copyright (C) 2014 Orange Labs
- * http://www.orange.com
+ * Author: Olivier Dugeon <olivier.dugeon@orange.com>
+ *
+ * Copyright (C) 2014 - 2019 Orange Labs http://www.orange.com
*
* This file is part of GNU Zebra.
*
* 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
*/
-/* 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 IS_INTER_AS_AS(x) (x & INTER_AS & FLOOD_AS)
/*
- * Following section defines subTLV (tag, length, value) structures,
- * used for Traffic Engineering.
+ * Note (since release 7.2), subTLVs definition, serialization
+ * and de-serialization have mode to isis_tlvs.[c,h]
*/
-struct subtlv_header
-{
- u_char type; /* sub_TLV_XXX type (see above) */
- u_char length; /* Value portion only, in byte */
-};
-
-#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
-{
+#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)
- /* Status of MPLS-TE on this interface */
- status_t status;
+/* Per area MPLS-TE parameters */
+struct mpls_te_area {
+ /* Status of MPLS-TE: enable or disable */
+ status_t status;
- /* Type of MPLS-TE circuit: STD_TE(RFC5305), INTER_AS(RFC5316), INTER_AS_EMU(RFC5316 emulated) */
- u_int8_t type;
+ /* L1, L1-L2, L2-Only */
+ uint8_t level;
- /* Total size of sub_tlvs */
- u_char length;
+ /* RFC5316 */
+ interas_mode_t inter_as;
+ struct in_addr interas_areaid;
- /* 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;
+ /* MPLS_TE router ID */
+ struct in_addr router_id;
};
/* Prototypes. */
-void isis_mpls_te_init (void);
-struct mpls_te_circuit *mpls_te_circuit_new(void);
-void mpls_te_print_detail(struct vty *, struct te_is_neigh *);
-void set_circuitparams_local_ipaddr (struct mpls_te_circuit *, struct in_addr);
-void set_circuitparams_rmt_ipaddr (struct mpls_te_circuit *, struct in_addr);
-u_char subtlvs_len (struct mpls_te_circuit *);
-u_char add_te_subtlvs(u_char *, struct mpls_te_circuit *);
-u_char build_te_subtlvs(u_char *, struct isis_circuit *);
+void isis_mpls_te_init(void);
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 *);
+int isis_mpls_te_update(struct interface *);
#endif /* _ZEBRA_ISIS_MPLS_TE_H */
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