*
* 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 {
- uint8_t type; /* sub_TLV_XXX type (see above) */
- uint8_t 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. */
- uint32_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. */
- uint32_t local; /* Link Local Identifier */
- uint32_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. */
- uint8_t 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. */
- uint32_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. */
- uint32_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. */
- uint32_t low; /* low delay in micro-seconds only 24 bits => 0 ...
- 16777215
- with Anomalous Bit (A) as Upper most bit */
- uint32_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. */
- uint32_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. */
- uint32_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 && m->status == enable)
+#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)
/* Per area MPLS-TE parameters */
struct mpls_te_area {
struct in_addr router_id;
};
-/* Per Circuit MPLS-TE parameters */
-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) */
- uint8_t type;
-
- /* Total size of sub_tlvs */
- uint8_t 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 *);
+int isis_mpls_te_update(struct interface *);
#endif /* _ZEBRA_ISIS_MPLS_TE_H */
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