Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 421 insertions, 0 deletions

diff --git a/ospfd/ospf_te.h b/ospfd/ospf_te.h
new file mode 100644
index 0000000..49906ef
--- /dev/null
+++ b/ospfd/ospf_te.h
@@ -0,0 +1,421 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * This is an implementation of RFC3630, RFC5392 & RFC6827
+ * Copyright (C) 2001 KDD R&D Laboratories, Inc.
+ * http://www.kddlabs.co.jp/
+ *
+ * Copyright (C) 2012 Orange Labs
+ * http://www.orange.com
+ */
+
+/* Add support of RFC7471 */
+/* Add support of RFC5392 */
+/* Add support of RFC6827 (partial) */
+
+#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->|<Resv'd>|<-- 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	MAX_LEGAL_TE_INSTANCE_NUM (0xffff)
+#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 define the type of TE link regarding the various RFC */
+#define STD_TE  	0x01
+#define GMPLS   	0x02
+#define INTER_AS	0x04
+#define PSEUDO_TE	0x08
+#define EMULATED	0x10
+
+#define IS_STD_TE(x)		(x & STD_TE)
+#define IS_PSEUDO_TE(x)		(x & PSEUDO_TE)
+#define IS_INTER_AS(x) 		(x & INTER_AS)
+#define IS_EMULATED(x)		(x & EMULATED)
+
+/* Flags to manage TE Link LSA */
+#define LPFLG_LSA_INACTIVE		0x00
+#define LPFLG_LSA_ACTIVE		0x01
+#define LPFLG_LSA_ENGAGED		0x02
+#define LPFLG_LOOKUP_DONE		0x04
+#define LPFLG_LSA_FORCED_REFRESH	0x08
+#define LPFLG_LSA_FLOOD_AS		0x10
+
+#define IS_FLOOD_AS(x)		(x & LPFLG_LSA_FLOOD_AS)
+
+/* Macro to log debug message */
+#define ote_debug(...)                                                         \
+	do {                                                                   \
+		if (IS_DEBUG_OSPF_TE)                                          \
+			zlog_debug(__VA_ARGS__);                               \
+	} while (0)
+
+/*
+ * Following section defines TLV body parts.
+ */
+
+/* Router Address TLV */ /* Mandatory */
+#define	TE_TLV_ROUTER_ADDR		1
+struct te_tlv_router_addr {
+	struct tlv_header header; /* Value length is 4 octets. */
+	struct in_addr value;
+};
+
+/* Link TLV */
+#define	TE_TLV_LINK			2
+struct te_tlv_link {
+	struct tlv_header header;
+	/* A set of link-sub-TLVs will follow. */
+};
+
+/* Default TE TLV size */
+#define TE_LINK_SUBTLV_DEF_SIZE		4
+
+/* Link Type Sub-TLV */ /* Mandatory */
+#define	TE_LINK_SUBTLV_LINK_TYPE	1
+#define TE_LINK_SUBTLV_TYPE_SIZE	1
+struct te_link_subtlv_link_type {
+	struct tlv_header header; /* Value length is 1 octet. */
+	struct {
+#define	LINK_TYPE_SUBTLV_VALUE_PTP	1
+#define	LINK_TYPE_SUBTLV_VALUE_MA	2
+		uint8_t value;
+		uint8_t padding[3];
+	} link_type;
+};
+
+/* Link Sub-TLV: Link ID */ /* Mandatory */
+#define	TE_LINK_SUBTLV_LINK_ID		2
+struct te_link_subtlv_link_id {
+	struct 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 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 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 tlv_header header; /* Value length is 4 octets. */
+	uint32_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 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 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
+#define TE_LINK_SUBTLV_UNRSV_SIZE	32
+struct te_link_subtlv_unrsv_bw {
+	struct tlv_header header;    /* Value length is 32 octets. */
+	float value[MAX_CLASS_TYPE]; /* 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 tlv_header header; /* Value length is 4 octets. */
+	uint32_t value;		  /* Admin. group membership. */
+};
+
+/* For RFC6827 */
+/* Local and Remote TE Router ID */
+#define TE_LINK_SUBTLV_LRRID		10
+#define TE_LINK_SUBTLV_LRRID_SIZE	8
+struct te_link_subtlv_lrrid {
+	struct tlv_header header; /* Value length is 8 octets. */
+	struct in_addr local;     /* Local TE Router Identifier */
+	struct in_addr remote;    /* Remote TE Router Identifier */
+};
+
+/* RFC4203: Link Local/Remote Identifiers */
+#define TE_LINK_SUBTLV_LLRI		11
+#define TE_LINK_SUBTLV_LLRI_SIZE	8
+struct te_link_subtlv_llri {
+	struct tlv_header header; /* Value length is 8 octets. */
+	uint32_t local;		  /* Link Local Identifier */
+	uint32_t remote;	  /* Link Remote Identifier */
+};
+
+/* Inter-RA Export Upward sub-TLV (12) and Inter-RA Export Downward sub-TLV (13)
+ * (RFC6827bis) are not yet supported */
+/* SUBTLV 14-16 (RFC4203) are not yet supported */
+/* Bandwidth Constraints sub-TLV (17) (RFC4124) is not yet supported */
+/* SUBLV 18-20 are for OSPFv3 TE (RFC5329). see ospf6d */
+
+/* For RFC 5392 */
+/* Remote AS Number sub-TLV */
+#define TE_LINK_SUBTLV_RAS		21
+struct te_link_subtlv_ras {
+	struct tlv_header header; /* Value length is 4 octets. */
+	uint32_t value;		  /* Remote AS number */
+};
+
+/* IPv4 Remote ASBR ID Sub-TLV */
+#define TE_LINK_SUBTLV_RIP		22
+struct te_link_subtlv_rip {
+	struct tlv_header header; /* Value length is 4 octets. */
+	struct in_addr value;     /* Remote ASBR IP address */
+};
+
+/* SUBTLV 24 is IPv6 Remote ASBR ID (RFC5392). see ospf6d */
+
+/* SUBTLV 23 (RFC5330) and 25 (RFC6001) are not yet supported */
+
+/* SUBTLV 26 (RFC7308) is not yet supported */
+
+/* RFC7471 */
+/* Link Sub-TLV: Average Link Delay */ /* Optional */
+#define TE_LINK_SUBTLV_AV_DELAY		27
+struct te_link_subtlv_av_delay {
+	struct tlv_header header; /* Value length is 4 bytes. */
+	/*
+	 * delay in micro-seconds only 24 bits => 0 ... 16777215
+	 * with Anomalous Bit as Upper most bit
+	 */
+	uint32_t value;
+};
+
+/* Link Sub-TLV: Low/High Link Delay */
+#define TE_LINK_SUBTLV_MM_DELAY         28
+#define TE_LINK_SUBTLV_MM_DELAY_SIZE    8
+struct te_link_subtlv_mm_delay {
+	struct tlv_header header; /* Value length is 8 bytes. */
+	/*
+	 * low delay in micro-seconds only 24 bits => 0 ... 16777215
+	 * with Anomalous Bit (A) as Upper most bit
+	 */
+	uint32_t low;
+	/* high delay in micro-seconds only 24 bits => 0 ... 16777215 */
+	uint32_t high;
+};
+
+/* Link Sub-TLV: Link Delay Variation i.e. Jitter */
+#define TE_LINK_SUBTLV_DELAY_VAR	29
+struct te_link_subtlv_delay_var {
+	struct tlv_header header; /* Value length is 4 bytes. */
+	/* interval in micro-seconds only 24 bits => 0 ... 16777215 */
+	uint32_t value;
+};
+
+/* Link Sub-TLV: Routine Unidirectional Link Packet Loss */
+#define TE_LINK_SUBTLV_PKT_LOSS		30
+struct te_link_subtlv_pkt_loss {
+	struct tlv_header header; /* Value length is 4 bytes. */
+	/*
+	 * in percentage of total traffic only 24 bits (2^24 - 2)
+	 * with Anomalous Bit as Upper most bit
+	 */
+	uint32_t value;
+};
+
+/* Link Sub-TLV: Unidirectional Residual Bandwidth */ /* Optional */
+#define TE_LINK_SUBTLV_RES_BW		31
+struct te_link_subtlv_res_bw {
+	struct tlv_header header; /* Value length is 4 bytes. */
+	/* bandwidth in IEEE floating point format with units in bytes/second */
+	float value;
+};
+
+/* Link Sub-TLV: Unidirectional Available Bandwidth */ /* Optional */
+#define TE_LINK_SUBTLV_AVA_BW		32
+struct te_link_subtlv_ava_bw {
+	struct tlv_header header; /* Value length is 4 octets. */
+	/* bandwidth in IEEE floating point format with units in bytes/second */
+	float value;
+};
+
+/* Link Sub-TLV: Unidirectional Utilized Bandwidth */ /* Optional */
+#define TE_LINK_SUBTLV_USE_BW           33
+struct te_link_subtlv_use_bw {
+	struct tlv_header header; /* Value length is 4 octets. */
+	/* bandwidth in IEEE floating point format with units in bytes/second */
+	float value;
+};
+
+#define TE_LINK_SUBTLV_MAX		34      /* Last SUBTLV + 1 */
+
+/* Here are "non-official" architectural constants. */
+#define MPLS_TE_MINIMUM_BANDWIDTH	1.0	/* Reasonable? *//* XXX */
+
+/* Mode for Inter-AS Opaque-LSA */
+enum inter_as_mode { Off, AS, Area };
+
+struct te_link_subtlv {
+	struct tlv_header header;
+	union {
+		uint32_t link_type;
+		struct in_addr link_id;
+		struct in_addr lclif;
+		struct in_addr rmtif;
+		uint32_t te_metric;
+		float max_bw;
+		float max_rsv_bw;
+		float unrsv[8];
+		uint32_t rsc_clsclr;
+		uint32_t llri[2];
+		uint32_t ras;
+		struct in_addr rip;
+		struct in_addr lrrid[2];
+		uint32_t av_delay;
+		uint32_t mm_delay;
+		uint32_t delay_var;
+		uint32_t pkt_loss;
+		float res_bw;
+		float ava_bw;
+		float use_bw;
+	} value;
+};
+
+/* Following structure are internal use only. */
+struct ospf_mpls_te {
+	/* Status of MPLS-TE: enable or disable */
+	bool enabled;
+
+	/* Traffic Engineering Database i.e. Link State */
+	struct ls_ted *ted;
+	bool export;
+
+	/* RFC5392 */
+	enum inter_as_mode inter_as;
+	struct in_addr interas_areaid;
+
+	/* List elements are zebra-interfaces (ifp), not ospf-interfaces (oi).
+	 */
+	struct list *iflist;
+
+	/* Store Router-TLV in network byte order. */
+	struct te_tlv_router_addr router_addr;
+};
+
+struct mpls_te_link {
+	/*
+	 * According to MPLS-TE (draft) specification, 24-bit Opaque-ID field
+	 * is subdivided into 8-bit "unused" field and 16-bit "instance" field.
+	 * In this implementation, each Link-TLV has its own instance.
+	 */
+	uint32_t instance;
+
+	/* Reference pointer to a Zebra-interface. */
+	struct interface *ifp;
+
+	/* Area info in which this MPLS-TE link belongs to. */
+	struct ospf_area *area;
+
+	/* Flags to manage this link parameters. */
+	uint32_t flags;
+
+	/* Type of MPLS-TE link: RFC3630, RFC5392, RFC5392 emulated, RFC6827 */
+	uint8_t type;
+
+	/* Store Link-TLV in network byte order. */
+	/* RFC3630 & RFC6827 / RFC 6827 */
+	struct te_tlv_link link_header;
+	struct te_link_subtlv_link_type link_type;
+	struct te_link_subtlv_link_id link_id;
+	struct te_link_subtlv_lclif_ipaddr lclif_ipaddr;
+	struct te_link_subtlv_rmtif_ipaddr rmtif_ipaddr;
+	struct te_link_subtlv_te_metric te_metric;
+	struct te_link_subtlv_max_bw max_bw;
+	struct te_link_subtlv_max_rsv_bw max_rsv_bw;
+	struct te_link_subtlv_unrsv_bw unrsv_bw;
+	struct te_link_subtlv_rsc_clsclr rsc_clsclr;
+	/* RFC4203 */
+	struct te_link_subtlv_llri llri;
+	/* RFC5392 */
+	struct te_link_subtlv_ras ras;
+	struct te_link_subtlv_rip rip;
+	/* RFC6827 */
+	struct te_link_subtlv_lrrid lrrid;
+	/* RFC7471 */
+	struct te_link_subtlv_av_delay av_delay;
+	struct te_link_subtlv_mm_delay mm_delay;
+	struct te_link_subtlv_delay_var delay_var;
+	struct te_link_subtlv_pkt_loss pkt_loss;
+	struct te_link_subtlv_res_bw res_bw;
+	struct te_link_subtlv_ava_bw ava_bw;
+	struct te_link_subtlv_use_bw use_bw;
+
+	struct in_addr adv_router;
+	struct in_addr id;
+};
+
+/* Prototypes. */
+extern int ospf_mpls_te_init(void);
+extern void ospf_mpls_te_term(void);
+extern void ospf_mpls_te_finish(void);
+extern struct ospf_mpls_te *get_ospf_mpls_te(void);
+extern void ospf_mpls_te_update_if(struct interface *);
+extern void ospf_mpls_te_lsa_schedule(struct mpls_te_link *, enum lsa_opcode);
+extern void set_linkparams_llri(struct mpls_te_link *, uint32_t, uint32_t);
+extern void set_linkparams_lrrid(struct mpls_te_link *, struct in_addr,
+				 struct in_addr);
+
+struct zapi_opaque_reg_info;
+/**
+ * Call when a client send a Link State Sync message. In turn, OSPF will send
+ * the contain of the Link State Data base.
+ *
+ * @param info    ZAPI Opaque message information
+ *
+ * @return	  0 on success, -1 otherwise
+ */
+extern int ospf_te_sync_ted(struct zapi_opaque_reg_info dst);
+
+#endif /* _ZEBRA_OSPF_MPLS_TE_H */