Update Traffic Engineering Support for OSPFD

NOTE: I am squashing several commits together because they
do not independently compile and we need this ability to
do any type of sane testing on the patches.  Since this
series builds together I am doing this. -DBS

This new structure is the basis to get new link parameters for
Traffic Engineering from Zebra/interface layer to OSPFD and ISISD
for the support of Traffic Engineering

* lib/if.[c,h]: link parameters struture and get/set functions
* lib/command.[c,h]: creation of a new link-node
* lib/zclient.[c,h]: modification to the ZBUS message to convey the
link parameters structure
* lib/zebra.h: New ZBUS message

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

Add support for IEEE 754 format

* lib/stream.[c,h]: Add stream_get{f,d} and stream_put{f,d}) demux and muxers to
  safely convert between big-endian IEEE-754 single and double binary
  format, as used in IETF RFCs, and C99.  Implementation depends on host
  using __STDC_IEC_559__, which should be everything we care about.  Should
  correctly error out otherwise.
* lib/network.[c,h]: Add ntohf and htonf converter
* lib/memtypes.c: Add new memeory type for Traffic Engineering support

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

Add link parameters support to Zebra

* zebra/interface.c:
   - Add new link-params CLI commands
   - Add new functions to set/get link parameters for interface
* zebra/redistribute.[c,h]: Add new function to propagate link parameters
to routing daemon (essentially OSPFD and ISISD) for Traffic Engineering.
* zebra/redistribute_null.c: Add new function
zebra_interface_parameters_update()
* zebra/zserv.[c,h]: Add new functions to send link parameters

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

Add support of new link-params CLI to vtysh

In vtysh_config.c/vtysh_config_parse_line(), it is not possible to continue
to use the ordered version for adding line i.e. config_add_line_uniq() to print
Interface CLI commands as it completely break the new LINK_PARAMS_NODE.

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

Update Traffic Engineering support for OSPFD

These patches update original code to RFC3630 (OSPF-TE) and add support of
RFC5392 (Inter-AS v2) & RFC7471 (TE metric extensions) and partial support
of RFC6827 (ASON - GMPLS).

* ospfd/ospf_dump.[c,h]: Add new dump functions for Traffic Engineering
* ospfd/ospf_opaque.[c,h]: Add new TLV code points for RFC5392
* ospfd/ospf_packet.c: Update checking of OSPF_OPTION
* ospfd/ospf_vty.[c,h]: Update ospf_str2area_id
* ospfd/ospf_zebra.c: Add new function ospf_interface_link_params() to get
Link Parameters information from the interface to populate Traffic Engineering
metrics
* ospfd/ospfd.[c,h]: Update OSPF_OPTION flags (T -> MT and new DN)
* ospfd/ospf_te.[c,h]: Major modifications to update the code to new
link parameters structure and new RFCs

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

tmp

1 files changed, 296 insertions, 23 deletions

diff --git a/ospfd/ospf_te.h b/ospfd/ospf_te.h
index 863d8ba8f..8bb77c40c 100644
--- a/ospfd/ospf_te.h
+++ b/ospfd/ospf_te.h
@@ -1,8 +1,11 @@
 /*
- * This is an implementation of draft-katz-yeung-ospf-traffic-06.txt
+ * 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
+ *
  * This file is part of GNU Zebra.
  *
  * GNU Zebra is free software; you can redistribute it and/or modify it
@@ -21,6 +24,10 @@
  * 02111-1307, USA.
  */
 
+/* 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
 
@@ -42,6 +49,7 @@
  */
 
 #define	MAX_LEGAL_TE_INSTANCE_NUM (0xffff)
+#define LEGAL_TE_INSTANCE_RANGE(i)  (0 <= (i) && (i) <= 0xffff)
 
 /*
  *        24       16        8        0
@@ -62,6 +70,31 @@
  * +--------+--------+--------+--------+ ---
  */
 
+/* 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 FLOOD_AREA	0x10
+#define FLOOD_AS	0x20
+#define EMULATED	0x80
+
+#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)
+#define IS_FLOOD_AREA(x)	(x & FLOOD_AREA)
+#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)
+
+/* Flags to manage TE Link LSA */
+#define LPFLG_LSA_INACTIVE		0x0
+#define LPFLG_LSA_ACTIVE		0x1
+#define LPFLG_LSA_ENGAGED		0x2
+#define LPFLG_LOOKUP_DONE		0x4
+#define LPFLG_LSA_FORCED_REFRESH	0x8
+
 /*
  * Following section defines TLV (tag, length, value) structures,
  * used for Traffic Engineering.
@@ -87,10 +120,18 @@ struct te_tlv_header
 #define TLV_HDR_NEXT(tlvh) \
 	(struct te_tlv_header *)((char *)(tlvh) + TLV_SIZE(tlvh))
 
+#define TLV_HDR_SUBTLV(tlvh) \
+	(struct te_tlv_header *)((char *)(tlvh) + TLV_HDR_SIZE)
+
+#define TLV_TYPE(tlvh)     tlvh.header.type
+#define TLV_LEN(tlvh)      tlvh.header.length
+#define TLV_HDR(tlvh)      tlvh.header
+
+
 /*
  * Following section defines TLV body parts.
  */
-/* Router Address TLV *//* Mandatory */
+/* Router Address TLV */ /* Mandatory */
 #define	TE_TLV_ROUTER_ADDR		1
 struct te_tlv_router_addr
 {
@@ -106,12 +147,16 @@ struct te_tlv_link
   /* A set of link-sub-TLVs will follow. */
 };
 
-/* Link Type Sub-TLV *//* Mandatory */
-#define	TE_LINK_SUBTLV_LINK_TYPE		1
+#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 te_tlv_header	header;		/* Value length is 1 octet. */
-  struct {
+  struct
+  {
 #define	LINK_TYPE_SUBTLV_VALUE_PTP	1
 #define	LINK_TYPE_SUBTLV_VALUE_MA	2
       u_char	value;
@@ -119,75 +164,303 @@ struct te_link_subtlv_link_type
   } link_type;
 };
 
-/* Link Sub-TLV: Link ID *//* Mandatory */
-#define	TE_LINK_SUBTLV_LINK_ID			2
+/* Link Sub-TLV: Link ID */ /* Mandatory */
+#define	TE_LINK_SUBTLV_LINK_ID		2
 struct te_link_subtlv_link_id
 {
   struct te_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
+/* Link Sub-TLV: Local Interface IP Address */ /* Optional */
+#define	TE_LINK_SUBTLV_LCLIF_IPADDR	3
 struct te_link_subtlv_lclif_ipaddr
 {
   struct te_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
+/* Link Sub-TLV: Remote Interface IP Address */ /* Optional */
+#define	TE_LINK_SUBTLV_RMTIF_IPADDR	4
 struct te_link_subtlv_rmtif_ipaddr
 {
   struct te_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
+/* Link Sub-TLV: Traffic Engineering Metric */ /* Optional */
+#define	TE_LINK_SUBTLV_TE_METRIC	5
 struct te_link_subtlv_te_metric
 {
   struct te_tlv_header	header;		/* Value length is 4 octets. */
   u_int32_t		value;		/* Link metric for TE purpose. */
 };
 
-/* Link Sub-TLV: Maximum Bandwidth *//* Optional */
-#define	TE_LINK_SUBTLV_MAX_BW			6
+/* Link Sub-TLV: Maximum Bandwidth */ /* Optional */
+#define	TE_LINK_SUBTLV_MAX_BW		6
 struct te_link_subtlv_max_bw
 {
   struct te_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
+/* Link Sub-TLV: Maximum Reservable Bandwidth */ /* Optional */
+#define	TE_LINK_SUBTLV_MAX_RSV_BW	7
 struct te_link_subtlv_max_rsv_bw
 {
   struct te_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
+/* 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 te_tlv_header	header;		/* Value length is 32 octets. */
-  float			value[8];	/* One for each priority level. */
+  float			value[MAX_CLASS_TYPE];	/* One for each priority level. */
 };
 
-/* Link Sub-TLV: Resource Class/Color *//* Optional */
-#define	TE_LINK_SUBTLV_RSC_CLSCLR		9
+/* Link Sub-TLV: Resource Class/Color */ /* Optional */
+#define	TE_LINK_SUBTLV_RSC_CLSCLR	9
 struct te_link_subtlv_rsc_clsclr
 {
   struct te_tlv_header	header;		/* Value length is 4 octets. */
   u_int32_t		value;		/* Admin. group membership. */
 };
 
-/* Here are "non-official" architechtual constants. */
+/* 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 te_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 te_tlv_header header;  /* Value length is 8 octets. */
+  u_int32_t local;              /* Link Local Identifier */
+  u_int32_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 OSPFv6 TE (RFC5329). see ospf6d */
+
+/* For RFC 5392 */
+/* Remote AS Number sub-TLV */
+#define TE_LINK_SUBTLV_RAS		21
+struct te_link_subtlv_ras
+{
+  struct te_tlv_header header;  /* Value length is 4 octets. */
+  u_int32_t value;              /* Remote AS number */
+};
+
+/* IPv4 Remote ASBR ID Sub-TLV */
+#define TE_LINK_SUBTLV_RIP		22
+struct te_link_subtlv_rip
+{
+  struct te_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 te_tlv_header header;  /* Value length is 4 bytes. */
+  u_int32_t            value;   /* delay in micro-seconds only 24 bits => 0 ... 16777215
+                                   with Anomalous Bit as Upper most bit */
+};
+
+/* 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 te_tlv_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 */
+};
+
+/* Link Sub-TLV: Link Delay Variation i.e. Jitter */
+#define TE_LINK_SUBTLV_DELAY_VAR	29
+struct te_link_subtlv_delay_var
+{
+  struct te_tlv_header header;  /* Value length is 4 bytes. */
+  u_int32_t            value;   /* interval in micro-seconds only 24 bits => 0 ... 16777215 */
+};
+
+/* Link Sub-TLV: Routine Unidirectional Link Packet Loss */
+#define TE_LINK_SUBTLV_PKT_LOSS		30
+struct te_link_subtlv_pkt_loss
+{
+  struct te_tlv_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 as Upper most bit */
+};
+
+/* Link Sub-TLV: Unidirectional Residual Bandwidth */ /* Optional */
+#define TE_LINK_SUBTLV_RES_BW		31
+struct te_link_subtlv_res_bw
+{
+  struct te_tlv_header header;  /* Value length is 4 bytes. */
+  float                value;   /* bandwidth in IEEE floating point format with units in bytes per second */
+};
+
+/* Link Sub-TLV: Unidirectional Available Bandwidth */ /* Optional */
+#define TE_LINK_SUBTLV_AVA_BW		32
+struct te_link_subtlv_ava_bw
+{
+  struct te_tlv_header header;  /* Value length is 4 octets. */
+  float                value;   /* bandwidth in IEEE floating point format with units in bytes per second */
+};
+
+/* Link Sub-TLV: Unidirectional Utilized Bandwidth */ /* Optional */
+#define TE_LINK_SUBTLV_USE_BW           33
+struct te_link_subtlv_use_bw
+{
+  struct te_tlv_header header;  /* Value length is 4 octets. */
+  float                value;   /* bandwidth in IEEE floating point format with units in bytes per second */
+};
+
+#define TE_LINK_SUBTLV_MAX		34      /* Last SUBTLV + 1 */
+
+/* Here are "non-official" architectural constants. */
 #define MPLS_TE_MINIMUM_BANDWIDTH	1.0	/* Reasonable? *//* XXX */
 
+/* Following declaration concerns the MPLS-TE and LINk-TE management */
+typedef enum _opcode_t
+{ REORIGINATE_THIS_LSA, REFRESH_THIS_LSA, FLUSH_THIS_LSA } opcode_t;
+
+typedef enum _status_t
+{ disabled, enabled } status_t;
+
+/* Mode for Inter-AS Opaque-LSA */
+enum inter_as_mode { Disable, AS, Area };
+
+struct te_link_subtlv
+{
+  struct te_tlv_header header;
+  union
+  {
+    u_int32_t link_type;
+    struct in_addr link_id;
+    struct in_addr lclif;
+    struct in_addr rmtif;
+    u_int32_t te_metric;
+    float max_bw;
+    float max_rsv_bw;
+    float unrsv[8];
+    u_int32_t rsc_clsclr;
+    u_int32_t llri[2];
+    u_int32_t ras;
+    struct in_addr rip;
+    struct in_addr lrrid[2];
+    u_int32_t av_delay;
+    u_int32_t mm_delay;
+    u_int32_t delay_var;
+    u_int32_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 disbale */
+  status_t status;
+
+  /* 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.
+   */
+  u_int32_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. */
+  u_int32_t flags;
+
+  /* Type of MPLS-TE link: RFC3630, RFC5392, RFC5392 emulated, RFC6827 */
+  u_int8_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 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 *, opcode_t);
+extern u_int32_t get_mpls_te_instance_value (void);
+extern void set_linkparams_llri (struct mpls_te_link *, u_int32_t, u_int32_t);
+extern void set_linkparams_lrrid (struct mpls_te_link *, struct in_addr, struct in_addr);
 
 #endif /* _ZEBRA_OSPF_MPLS_TE_H */