Adding upstream version 9.1.upstream/9.1

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

1 files changed, 439 insertions, 0 deletions

diff --git a/eigrpd/eigrp_const.h b/eigrpd/eigrp_const.h
new file mode 100644
index 0000000..607719d
--- /dev/null
+++ b/eigrpd/eigrp_const.h
@@ -0,0 +1,439 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * EIGRP Definition of Constants.
+ * Copyright (C) 2013-2016
+ * Authors:
+ *   Donnie Savage
+ *   Jan Janovic
+ *   Matej Perina
+ *   Peter Orsag
+ *   Peter Paluch
+ *   Frantisek Gazo
+ *   Tomas Hvorkovy
+ *   Martin Kontsek
+ *   Lukas Koribsky
+ */
+
+#ifndef _ZEBRA_EIGRP_CONST_H_
+#define _ZEBRA_EIGRP_CONST_H_
+
+#define EIGRP_NEIGHBOR_DOWN           0
+#define EIGRP_NEIGHBOR_PENDING        1
+#define EIGRP_NEIGHBOR_UP             2
+#define EIGRP_NEIGHBOR_STATE_MAX      3
+
+/*Packet requiring ack will be retransmitted again after this time*/
+#define EIGRP_PACKET_RETRANS_TIME        2 /* in seconds */
+#define EIGRP_PACKET_RETRANS_MAX         16 /* number of retrans attempts */
+#define PLAINTEXT_LENGTH                 81
+
+/*Metric variance multiplier*/
+#define EIGRP_VARIANCE_DEFAULT  1
+#define EIGRP_MAX_PATHS_DEFAULT 4
+
+/* Return values of functions involved in packet verification */
+#define MSG_OK    0
+#define MSG_NG    1
+
+#define EIGRP_HEADER_VERSION            2
+
+/* Default protocol, port number. */
+#ifndef IPPROTO_EIGRPIGP
+#define IPPROTO_EIGRPIGP         88
+#endif /* IPPROTO_EIGRPIGP */
+
+#define EIGRP_AUTH_MD5_TLV_SIZE          40
+#define EIGRP_AUTH_SHA256_TLV_SIZE          56
+
+/*Cisco routers use only first 44 bytes of basic hello for their MD5
+ * calculations*/
+#define EIGRP_MD5_BASIC_COMPUTE       44
+#define EIGRP_MD5_UPDATE_INIT_COMPUTE       40
+
+#define EIGRP_AUTH_BASIC_HELLO_FLAG       0x01
+#define EIGRP_AUTH_TID_HELLO_FLAG       0x02
+#define EIGRP_AUTH_UPDATE_INIT_FLAG       0x04
+#define EIGRP_AUTH_UPDATE_FLAG            0x08
+#define EIGRP_AUTH_EXTRA_SALT_FLAG        0x10
+
+#define EIGRP_NEXT_SEQUENCE_TLV_SIZE     8
+
+/* IP TTL for EIGRP protocol. */
+#define EIGRP_IP_TTL             1
+
+/* VTY port number. */
+#define EIGRP_VTY_PORT          2613
+
+/* Default configuration file name for eigrp. */
+#define EIGRP_DEFAULT_CONFIG   "eigrpd.conf"
+
+#define EIGRP_HELLO_INTERVAL_DEFAULT        5
+#define EIGRP_HOLD_INTERVAL_DEFAULT         15
+#define EIGRP_BANDWIDTH_DEFAULT             100000
+#define EIGRP_DELAY_DEFAULT                 10
+#define EIGRP_RELIABILITY_DEFAULT           255
+#define EIGRP_LOAD_DEFAULT                  1
+
+#define EIGRP_MULTICAST_ADDRESS            0xe000000A /*224.0.0.10*/
+
+#define EIGRP_MAX_METRIC                   0xffffffffU    /*4294967295*/
+enum metric_change { METRIC_DECREASE, METRIC_SAME, METRIC_INCREASE };
+
+#define DEFAULT_ROUTE               ZEBRA_ROUTE_MAX
+#define DEFAULT_ROUTE_TYPE(T) ((T) == DEFAULT_ROUTE)
+
+#define INTERFACE_DOWN_BY_ZEBRA       1
+#define INTERFACE_DOWN_BY_VTY         2
+#define INTERFACE_DOWN_BY_FINAL       3
+
+#define EIGRP_HELLO_NORMAL                    0x00
+#define EIGRP_HELLO_GRACEFUL_SHUTDOWN         0x01
+#define EIGRP_HELLO_ADD_SEQUENCE              0x02
+#define EIGRP_HELLO_GRACEFUL_SHUTDOWN_NBR     0x04
+
+/* EIGRP Network Type. */
+#define EIGRP_IFTYPE_NONE 0
+#define EIGRP_IFTYPE_POINTOPOINT 1
+#define EIGRP_IFTYPE_BROADCAST 2
+#define EIGRP_IFTYPE_LOOPBACK 3
+#define EIGRP_IFTYPE_MAX 4
+
+#define EIGRP_IF_ACTIVE                  0
+#define EIGRP_IF_PASSIVE                 1
+
+/* EIGRP TT destination type */
+#define EIGRP_TOPOLOGY_TYPE_CONNECTED           0 // Connected network
+#define EIGRP_TOPOLOGY_TYPE_REMOTE              1 // Remote internal network
+#define EIGRP_TOPOLOGY_TYPE_REMOTE_EXTERNAL     2 // Remote external network
+
+/*EIGRP TT entry flags*/
+#define EIGRP_ROUTE_DESCRIPTOR_SUCCESSOR_FLAG (1 << 0)
+#define EIGRP_ROUTE_DESCRIPTOR_FSUCCESSOR_FLAG (1 << 1)
+#define EIGRP_ROUTE_DESCRIPTOR_INTABLE_FLAG (1 << 2)
+#define EIGRP_ROUTE_DESCRIPTOR_EXTERNAL_FLAG (1 << 3)
+
+/*EIGRP FSM state count, event count*/
+#define EIGRP_FSM_STATE_MAX                  5
+#define EIGRP_FSM_EVENT_MAX                  16
+
+/*EEGRP FSM states*/
+enum eigrp_fsm_states {
+	EIGRP_FSM_STATE_PASSIVE,
+	EIGRP_FSM_STATE_ACTIVE_0,
+	EIGRP_FSM_STATE_ACTIVE_1,
+	EIGRP_FSM_STATE_ACTIVE_2,
+	EIGRP_FSM_STATE_ACTIVE_3,
+};
+
+/*EIGRP FSM events return values*/
+#define EIGRP_FSM_NEED_UPDATE				1
+#define EIGRP_FSM_NEED_QUERY				2
+
+/*EIGRP FSM events*/
+enum eigrp_fsm_events {
+	/*
+	 * Input event other than query from succ,
+	 * FC is not satisfied
+	 */
+	EIGRP_FSM_EVENT_NQ_FCN,
+
+	/* last reply, FD is reset */
+	EIGRP_FSM_EVENT_LR,
+
+	/* Query from succ, FC not satisfied */
+	EIGRP_FSM_EVENT_Q_FCN,
+
+	/* last reply, FC satisifed with current value of FDij */
+	EIGRP_FSM_EVENT_LR_FCS,
+
+	/* distance increase while in a active state */
+	EIGRP_FSM_EVENT_DINC,
+
+	/* Query from succ while in active state */
+	EIGRP_FSM_EVENT_QACT,
+
+	/* last reply, FC not satisfied */
+	EIGRP_FSM_EVENT_LR_FCN,
+
+	/*
+	 * state not changed
+	 * usually by receiving not last reply
+	 */
+	EIGRP_FSM_KEEP_STATE,
+};
+
+/**
+ * External routes originate from some other protocol - these are them
+ */
+#define NULL_PROTID		0		/*!< unknown protocol */
+#define IGRP_PROTID		1		/*!< IGRP.. whos your daddy! */
+#define EIGRP_PROTID		2		/*!< EIGRP - Just flat out the best */
+#define STATIC_PROTID		3		/*!< Staticly configured source */
+#define RIP_PROTID		4		/*!< Routing Information Protocol */
+#define HELLO_PROTID		5		/*!< Hello? RFC-891 you there? */
+#define OSPF_PROTID		6		/*!< OSPF - Open Shortest Path First */
+#define ISIS_PROTID		7		/*!< Intermediate System To Intermediate System */
+#define EGP_PROTID		8		/*!< Exterior Gateway Protocol */
+#define BGP_PROTID		9		/*!< Border Gateway Protocol */
+#define IDRP_PROTID		10		/*!< InterDomain Routing Protocol */
+#define CONN_PROTID		11		/*!< Connected source */
+
+/*
+ * metric k-value defaults
+ */
+#define EIGRP_K1_DEFAULT	1		//!< unweighed inverse bandwidth
+#define EIGRP_K2_DEFAULT	0		//!< no loading term
+#define EIGRP_K3_DEFAULT	1		//!< unweighted delay
+#define EIGRP_K4_DEFAULT	0		//!< no reliability term
+#define EIGRP_K5_DEFAULT	0		//!< no reliability term
+#define EIGRP_K6_DEFAULT	0		//!< do not add in extended metrics
+
+/*
+ * EIGRP Fixed header
+ */
+#define EIGRP_HEADER_LEN        20U
+#define EIGRP_PACKET_MAX_LEN    65535U   /* includes IP Header size. */
+
+#define EIGRP_TLV_HDR_LENGTH    4
+
+/**
+ * EIGRP Packet Opcodes
+ */
+#define EIGRP_OPC_UPDATE        1       /*!< packet containing routing information */
+#define EIGRP_OPC_REQUEST       2       /*!< sent to request one or more routes */
+#define EIGRP_OPC_QUERY         3       /*!< sent when a routing is in active start */
+#define EIGRP_OPC_REPLY         4       /*!< sent in response to a query */
+#define EIGRP_OPC_HELLO         5       /*!< sent to maintain a peering session */
+#define EIGRP_OPC_IPXSAP        6       /*!< IPX SAP information */
+#define EIGRP_OPC_PROBE         7       /*!< for test purposes   */
+#define EIGRP_OPC_ACK           8       /*!< acknowledge         */
+#define EIGRP_OPC_SIAQUERY      10      /*!< QUERY - with relaxed restrictions */
+#define EIGRP_OPC_SIAREPLY      11      /*!< REPLY - may contain old routing information */
+
+/**
+ * EIGRP TLV Range definitions
+ *      PDM             TLV Range
+ *      General         0x0000
+ *      IPv4            0x0100                  ** TLVs for one and all
+ *      ATALK           0x0200                  ** legacy
+ *      IPX             0x0300                  ** discontinued
+ *      IPv6            0x0400                  ** legacy
+ *      Multiprotocol   0x0600                  ** wide metrics
+ *      MultiTopology   0x00f0                  ** deprecated
+ */
+#define EIGRP_TLV_RANGEMASK     0xfff0          /*!< should be 0xff00 - opps */
+#define EIGRP_TLV_GENERAL       0x0000
+
+/**
+ * 1.2 TLV Definitions  ** legacy
+ * These are considered legacyu and are only used for backward compability with
+ * older Cisco Routers.  They should not be your first choice for packet codings
+ */
+#define EIGRP_TLV_IPv4          0x0100          /*!< Classic IPv4 TLV encoding */
+#define EIGRP_TLV_ATALK         0x0200          /*!< Classic Appletalk TLV encoding*/
+#define EIGRP_TLV_IPX           0x0300          /*!< Classic IPX TLV encoding */
+#define EIGRP_TLV_IPv6          0x0400          /*!< Classic IPv6 TLV encoding */
+
+/**
+ * 2.0 Multi-Protocol TLV Definitions
+ * These are the current packet formats and should be used for packets
+ */
+#define EIGRP_TLV_MP            0x0600          /*!< Non-PDM specific encoding */
+
+/**
+ * TLV type definitions.  Generic (protocol-independent) TLV types are
+ * defined here.  Protocol-specific ones are defined elsewhere.
+ */
+#define EIGRP_TLV_PARAMETER             (EIGRP_TLV_GENERAL | 0x0001)    /*!< eigrp parameters */
+#define EIGRP_TLV_PARAMETER_LEN         (12U)
+#define EIGRP_TLV_AUTH                  (EIGRP_TLV_GENERAL | 0x0002)    /*!< authentication */
+#define EIGRP_TLV_SEQ                   (EIGRP_TLV_GENERAL | 0x0003)    /*!< sequenced packet */
+#define EIGRP_TLV_SEQ_BASE_LEN          (5U)
+#define EIGRP_TLV_SW_VERSION            (EIGRP_TLV_GENERAL | 0x0004)    /*!< software version */
+#define EIGRP_TLV_SW_VERSION_LEN        (8U)
+#define EIGRP_TLV_NEXT_MCAST_SEQ        (EIGRP_TLV_GENERAL | 0x0005)    /*!< sequence number */
+#define EIGRP_TLV_PEER_TERMINATION      (EIGRP_TLV_GENERAL | 0x0007)    /*!< peer termination */
+#define EIGRP_TLV_PEER_TERMINATION_LEN 	(9U)
+#define EIGRP_TLV_PEER_TIDLIST          (EIGRP_TLV_GENERAL | 0x0008)    /*!< peer sub-topology list */
+
+/* Older cisco routers send TIDLIST value wrong, adding for backwards
+ * compatabily */
+#define EIGRP_TLV_PEER_MTRLIST          (EIGRP_TLV_GENERAL | 0x00f5)
+
+/**
+ * Route Based TLVs
+ */
+#define EIGRP_TLV_REQUEST               0x0001
+#define EIGRP_TLV_INTERNAL              0x0002
+#define EIGRP_TLV_EXTERNAL              0x0003
+#define EIGRP_TLV_COMMUNITY             0x0004
+#define EIGRP_TLV_TYPEMASK              0x000f
+
+#define EIGRP_TLV_IPv4_REQ              (EIGRP_TLV_IPv4 | EIGRP_TLV_REQUEST)
+#define EIGRP_TLV_IPv4_INT              (EIGRP_TLV_IPv4 | EIGRP_TLV_INTERNAL)
+#define EIGRP_TLV_IPv4_EXT              (EIGRP_TLV_IPv4 | EIGRP_TLV_EXTERNAL)
+#define EIGRP_TLV_IPv4_COM              (EIGRP_TLV_IPv4 | EIGRP_TLV_COMMUNITY)
+
+#define EIGRP_TLV_IPV4_SIZE_GRT_24_BIT      0x001D
+#define EIGRP_TLV_IPV4_SIZE_GRT_16_BIT      0x001C
+#define EIGRP_TLV_IPV4_SIZE_GRT_8_BIT       0x001B
+#define EIGRP_TLV_IPV4_SIZE_GRT_0_BIT       0x001A
+#define EIGRP_TLV_MAX_IPV4_BYTE             EIGRP_TLV_IPV4_SIZE_GRT_24_BIT
+
+/* max number of TLV IPv4 prefixes in packet */
+#define EIGRP_TLV_MAX_IPv4				25
+
+/**
+ *
+ * extdata flag field definitions
+ */
+#define EIGRP_OPAQUE_EXT        0x01    /*!< Route is external */
+#define EIGRP_OPAQUE_CD         0x02    /*!< Candidate default route */
+
+/**
+ * Address-Family types are taken from:
+ *       http://www.iana.org/assignments/address-family-numbers
+ * to provide a standards based exchange of AFI information between
+ * EIGRP routers.
+ */
+#define EIGRP_AF_IPv4           1       /*!< IPv4 (IP version 4) */
+#define EIGRP_AF_IPv6           2       /*!< IPv6 (IP version 6) */
+#define EIGRP_AF_IPX            11      /*!< IPX */
+#define EIGRP_AF_ATALK          12      /*!< Appletalk */
+#define EIGRP_SF_COMMON         16384   /*!< Cisco Service Family */
+#define EIGRP_SF_IPv4           16385   /*!< Cisco IPv4 Service Family */
+#define EIGRP_SF_IPv6           16386   /*!< Cisco IPv6 Service Family */
+
+/**
+ * Authentication types supported by EIGRP
+ */
+#define EIGRP_AUTH_TYPE_NONE            0
+#define EIGRP_AUTH_TYPE_TEXT            1
+#define EIGRP_AUTH_TYPE_MD5             2
+#define EIGRP_AUTH_TYPE_MD5_LEN         16
+#define EIGRP_AUTH_TYPE_SHA256          3
+#define EIGRP_AUTH_TYPE_SHA256_LEN      32
+
+/**
+ * opaque flag field definitions
+ */
+#define EIGRP_OPAQUE_SRCWD      0x01    /*!< Route Source Withdraw */
+#define EIGRP_OPAQUE_ACTIVE     0x04    /*!< Route is currently in active state */
+#define EIGRP_OPAQUE_REPL       0x08    /*!< Route is replicated from different tableid */
+
+/**
+ * pak flag bit field definitions - 0 (none)-7 source priority
+ */
+#define EIGRP_PRIV_DEFAULT      0x00    /* 0 (none)-7 source priority */
+#define EIGRP_PRIV_LOW          0x01
+#define EIGRP_PRIV_MEDIUM       0x04
+#define EIGRP_PRIV_HIGH         0x07
+
+/*
+ * Init bit definition. First unicast transmitted Update has this
+ * bit set in the flags field of the fixed header. It tells the neighbor
+ * to down-load his topology table.
+ */
+#define EIGRP_INIT_FLAG 0x01
+
+/*
+ * CR bit (Conditionally Received) definition in flags field on header. Any
+ * packets with the CR-bit set can be accepted by an EIGRP speaker if and
+ * only if a previous Hello was received with the SEQUENCE_TYPE TLV present.
+ *
+ * This allows multicasts to be transmitted in order and reliably at the
+ * same time as unicasts are transmitted.
+ */
+#define EIGRP_CR_FLAG 0x02
+
+/*
+ * RS bit.  The Restart flag is set in the hello and the init
+ * update packets during the nsf signaling period.  A nsf-aware
+ * router looks at the RS flag to detect if a peer is restarting
+ * and maintain the adjacency. A restarting router looks at
+ * this flag to determine if the peer is helping out with the restart.
+ */
+#define EIGRP_RS_FLAG 0x04
+
+/*
+ * EOT bit.  The End-of-Table flag marks the end of the start-up updates
+ * sent to a new peer.  A nsf restarting router looks at this flag to
+ * determine if it has finished receiving the start-up updates from all
+ * peers.  A nsf-aware router waits for this flag before cleaning up
+ * the stale routes from the restarting peer.
+ */
+#define EIGRP_EOT_FLAG 0x08
+
+/**
+ * EIGRP Virtual Router ID
+ *
+ * Define values to deal with EIGRP virtual router ids.  Virtual
+ * router IDs are stored in the upper short of the EIGRP fixed packet
+ * header.  The lower short of the packet header continues to be used
+ * as asystem number.
+ *
+ * Virtual Router IDs are PDM-independent.  All PDMs will use
+ * VRID_BASE to indicate the 'base' or 'legacy' EIGRP instance.
+ * All PDMs need to initialize their vrid to VRID_BASE for compatibility
+ * with legacy routers.
+ * Once IPv6 supports 'MTR Multicast', it will use the same VRID as
+ * IPv4.  No current plans to support VRIDs on IPX. :)
+ * Initial usage of VRID is to signal usage of Multicast topology for
+ * MTR.
+ *
+ * VRID_MCAST is a well known constant, other VRIDs will be determined
+ * programmatic...
+ *
+ * With the addition of SAF the VRID space has been divided into two
+ * segments 0x0000-0x7fff is for EIGRP and vNets, 0x8000-0xffff is
+ * for saf and its associated vNets.
+ */
+#define EIGRP_VRID_MASK         0x8001
+#define EIGRP_VRID_AF_BASE      0x0000
+#define EIGRP_VRID_MCAST_BASE   0x0001
+#define EIGRP_VRID_SF_BASE      0x8000
+
+/* Extended Attributes for a destination */
+#define EIGRP_ATTR_HDRLEN (2)
+#define EIGRP_ATTR_MAXDATA (512)
+
+#define EIGRP_ATTR_NOOP         0       /*!< No-Op used as offset padding */
+#define EIGRP_ATTR_SCALED       1       /*!< Scaled metric values */
+#define EIGRP_ATTR_TAG          2       /*!< Tag assigned by Admin for dest */
+#define EIGRP_ATTR_COMM         3       /*!< Community attribute for dest */
+#define EIGRP_ATTR_JITTER       4       /*!< Variation in path delay */
+#define EIGRP_ATTR_QENERGY      5       /*!< Non-Active energy usage along path */
+#define EIGRP_ATTR_ENERGY       6       /*!< Active energy usage along path */
+
+/*
+ * Begin EIGRP-BGP interoperability communities
+ */
+#define EIGRP_EXTCOMM_SOO_ASFMT         0x0003 /* Site-of-Origin, BGP AS format */
+#define EIGRP_EXTCOMM_SOO_ADRFMT        0x0103 /* Site-of-Origin, BGP/EIGRP addr format */
+
+/*
+ * EIGRP Specific communities
+ */
+#define EIGRP_EXTCOMM_EIGRP             0x8800 /* EIGRP route information appended*/
+#define EIGRP_EXTCOMM_DAD               0x8801 /* EIGRP AS + Delay           */
+#define EIGRP_EXTCOMM_VRHB              0x8802 /* EIGRP Vector: Reliability + Hop + BW */
+#define EIGRP_EXTCOMM_SRLM              0x8803 /* EIGRP System: Reserve +Load + MTU   */
+#define EIGRP_EXTCOMM_SAR               0x8804 /* EIGRP System: Remote AS + Remote ID  */
+#define EIGRP_EXTCOMM_RPM               0x8805 /* EIGRP Remote: Protocol + Metric    */
+#define EIGRP_EXTCOMM_VRR               0x8806 /* EIGRP Vecmet: Rsvd + (internal) Routerid */
+
+/*
+ * EIGRP Filter constants
+ */
+#define EIGRP_FILTER_IN  0
+#define EIGRP_FILTER_OUT 1
+#define EIGRP_FILTER_MAX 2
+
+/*
+ * EIGRP Filter constants
+ */
+#define EIGRP_HSROLE_DEFAULT  	EIGRP_HSROLE_SPOKE
+#define EIGRP_HSROLE_HUB 		0x01
+#define EIGRP_HSROLE_SPOKE 		0x02
+
+#endif /* _ZEBRA_EIGRP_CONST_H_ */