Imported Upstream version 4.3.0upstream/4.3.0

1 files changed, 328 insertions, 0 deletions

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+/* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.23 2007-10-08 07:53:21 hannes Exp $ (LBL) */
+/*
+ * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
+ */
+#define	OSPF_TYPE_UMD           0	/* UMd's special monitoring packets */
+#define	OSPF_TYPE_HELLO         1	/* Hello */
+#define	OSPF_TYPE_DD            2	/* Database Description */
+#define	OSPF_TYPE_LS_REQ        3	/* Link State Request */
+#define	OSPF_TYPE_LS_UPDATE     4	/* Link State Update */
+#define	OSPF_TYPE_LS_ACK        5	/* Link State Ack */
+
+/* Options field
+ *
+ * +------------------------------------+
+ * | DN | O | DC | L | N/P | MC | E | T |
+ * +------------------------------------+
+ *
+ */
+                
+#define OSPF_OPTION_T	0x01	/* T bit: TOS support	*/
+#define OSPF_OPTION_E	0x02	/* E bit: External routes advertised	*/
+#define	OSPF_OPTION_MC	0x04	/* MC bit: Multicast capable */
+#define	OSPF_OPTION_NP	0x08	/* N/P bit: NSSA capable */
+#define	OSPF_OPTION_EA	0x10	/* EA bit: External Attribute capable */
+#define	OSPF_OPTION_L	0x10	/* L bit: Packet contains LLS data block */
+#define	OSPF_OPTION_DC	0x20	/* DC bit: Demand circuit capable */
+#define	OSPF_OPTION_O	0x40	/* O bit: Opaque LSA capable */
+#define	OSPF_OPTION_DN	0x80	/* DN bit: Up/Down Bit capable - draft-ietf-ospf-2547-dnbit-04 */
+
+/* ospf_authtype	*/
+#define	OSPF_AUTH_NONE		0	/* No auth-data */
+#define	OSPF_AUTH_SIMPLE	1	/* Simple password */
+#define OSPF_AUTH_SIMPLE_LEN	8	/* max length of simple authentication */
+#define OSPF_AUTH_MD5		2	/* MD5 authentication */
+#define OSPF_AUTH_MD5_LEN	16	/* length of MD5 authentication */
+
+/* db_flags	*/
+#define	OSPF_DB_INIT		0x04
+#define	OSPF_DB_MORE		0x02
+#define	OSPF_DB_MASTER          0x01
+#define OSPF_DB_RESYNC          0x08  /* RFC4811 */
+
+/* ls_type	*/
+#define	LS_TYPE_ROUTER		1   /* router link */
+#define	LS_TYPE_NETWORK		2   /* network link */
+#define	LS_TYPE_SUM_IP		3   /* summary link */
+#define	LS_TYPE_SUM_ABR		4   /* summary area link */
+#define	LS_TYPE_ASE		5   /* ASE  */
+#define	LS_TYPE_GROUP		6   /* Group membership (multicast */
+				    /* extensions 23 July 1991) */
+#define	LS_TYPE_NSSA            7   /* rfc3101 - Not so Stubby Areas */
+#define	LS_TYPE_OPAQUE_LL       9   /* rfc2370 - Opaque Link Local */
+#define	LS_TYPE_OPAQUE_AL      10   /* rfc2370 - Opaque Link Local */
+#define	LS_TYPE_OPAQUE_DW      11   /* rfc2370 - Opaque Domain Wide */
+
+#define LS_OPAQUE_TYPE_TE       1   /* rfc3630 */
+#define LS_OPAQUE_TYPE_GRACE    3   /* rfc3623 */
+#define LS_OPAQUE_TYPE_RI       4   /* draft-ietf-ospf-cap-03 */
+
+#define LS_OPAQUE_TE_TLV_ROUTER 1   /* rfc3630 */
+#define LS_OPAQUE_TE_TLV_LINK   2   /* rfc3630 */
+
+#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE             1 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID               2 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP              3 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP             4 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC             5 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW                6 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW            7 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW              8 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP           9 /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID 11 /* rfc4203 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* rfc4203 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR    15 /* rfc4203 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP    16 /* rfc4203 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS       17 /* rfc4124 */
+
+#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP        1  /* rfc3630 */
+#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA         2  /* rfc3630 */
+
+#define LS_OPAQUE_GRACE_TLV_PERIOD       1 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_REASON       2 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_INT_ADDRESS  3 /* rfc3623 */
+
+#define LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN     0 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART  1 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE  2 /* rfc3623 */
+#define LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH   3 /* rfc3623 */
+
+#define LS_OPAQUE_RI_TLV_CAP             1 /* draft-ietf-ospf-cap-03 */
+
+
+/* rla_link.link_type	*/
+#define	RLA_TYPE_ROUTER		1   /* point-to-point to another router	*/
+#define	RLA_TYPE_TRANSIT	2   /* connection to transit network	*/
+#define	RLA_TYPE_STUB		3   /* connection to stub network	*/
+#define RLA_TYPE_VIRTUAL	4   /* virtual link			*/
+
+/* rla_flags	*/
+#define	RLA_FLAG_B	0x01
+#define	RLA_FLAG_E	0x02
+#define	RLA_FLAG_W1	0x04
+#define	RLA_FLAG_W2	0x08
+
+/* sla_tosmetric breakdown	*/
+#define	SLA_MASK_TOS		0x7f000000
+#define	SLA_MASK_METRIC		0x00ffffff
+#define SLA_SHIFT_TOS		24
+
+/* asla_tosmetric breakdown	*/
+#define	ASLA_FLAG_EXTERNAL	0x80000000
+#define	ASLA_MASK_TOS		0x7f000000
+#define	ASLA_SHIFT_TOS		24
+#define	ASLA_MASK_METRIC	0x00ffffff
+
+/* multicast vertex type */
+#define	MCLA_VERTEX_ROUTER	1
+#define	MCLA_VERTEX_NETWORK	2
+
+/* Link-Local-Signaling */
+#define OSPF_LLS_EO             1  /* RFC4811, RFC4812 */
+#define OSPF_LLS_MD5            2  /* RFC4813 */
+
+#define OSPF_LLS_EO_LR		0x00000001		/* RFC4811 */
+#define OSPF_LLS_EO_RS		0x00000002		/* RFC4812 */
+
+/*
+ * TOS metric struct (will be 0 or more in router links update)
+ */
+struct tos_metric {
+    u_int8_t tos_type;
+    u_int8_t reserved;
+    u_int8_t tos_metric[2];
+};
+struct tos_link {
+    u_int8_t link_type;
+    u_int8_t link_tos_count;
+    u_int8_t tos_metric[2];
+};
+union un_tos {
+    struct tos_link link;
+    struct tos_metric metrics;
+};
+
+/* link state advertisement header */
+struct lsa_hdr {
+    u_int16_t ls_age;
+    u_int8_t ls_options;
+    u_int8_t ls_type;
+    union {
+        struct in_addr lsa_id;
+        struct { /* opaque LSAs change the LSA-ID field */
+            u_int8_t opaque_type;
+            u_int8_t opaque_id[3];
+	} opaque_field;
+    } un_lsa_id;
+    struct in_addr ls_router;
+    u_int32_t ls_seq;
+    u_int16_t ls_chksum;
+    u_int16_t ls_length;
+};
+
+/* link state advertisement */
+struct lsa {
+    struct lsa_hdr ls_hdr;
+
+    /* Link state types */
+    union {
+	/* Router links advertisements */
+	struct {
+	    u_int8_t rla_flags;
+	    u_int8_t rla_zero[1];
+	    u_int16_t rla_count;
+	    struct rlalink {
+		struct in_addr link_id;
+		struct in_addr link_data;
+                union un_tos un_tos;
+	    } rla_link[1];		/* may repeat	*/
+	} un_rla;
+
+	/* Network links advertisements */
+	struct {
+	    struct in_addr nla_mask;
+	    struct in_addr nla_router[1];	/* may repeat	*/
+	} un_nla;
+
+	/* Summary links advertisements */
+	struct {
+	    struct in_addr sla_mask;
+	    u_int32_t sla_tosmetric[1];	/* may repeat	*/
+	} un_sla;
+
+	/* AS external links advertisements */
+	struct {
+	    struct in_addr asla_mask;
+	    struct aslametric {
+		u_int32_t asla_tosmetric;
+		struct in_addr asla_forward;
+		struct in_addr asla_tag;
+	    } asla_metric[1];		/* may repeat	*/
+	} un_asla;
+
+	/* Multicast group membership */
+	struct mcla {
+	    u_int32_t mcla_vtype;
+	    struct in_addr mcla_vid;
+	} un_mcla[1];
+
+        /* Opaque TE LSA */
+        struct {
+	    u_int16_t type;
+	    u_int16_t length;
+	    u_int8_t data[1]; /* may repeat   */
+	} un_te_lsa_tlv;
+
+        /* Opaque Grace LSA */
+        struct {
+	    u_int16_t type;
+	    u_int16_t length;
+	    u_int8_t data[1]; /* may repeat   */
+	} un_grace_tlv;
+
+        /* Opaque Router information LSA */
+        struct {
+	    u_int16_t type;
+	    u_int16_t length;
+	    u_int8_t data[1]; /* may repeat   */
+	} un_ri_tlv;
+
+        /* Unknown LSA */
+        struct unknown {
+	    u_int8_t data[1]; /* may repeat   */
+	} un_unknown[1];
+
+    } lsa_un;
+};
+
+#define	OSPF_AUTH_SIZE	8
+
+/*
+ * the main header
+ */
+struct ospfhdr {
+    u_int8_t ospf_version;
+    u_int8_t ospf_type;
+    u_int16_t ospf_len;
+    struct in_addr ospf_routerid;
+    struct in_addr ospf_areaid;
+    u_int16_t ospf_chksum;
+    u_int16_t ospf_authtype;
+    u_int8_t ospf_authdata[OSPF_AUTH_SIZE];
+    union {
+
+	/* Hello packet */
+	struct {
+	    struct in_addr hello_mask;
+	    u_int16_t hello_helloint;
+	    u_int8_t hello_options;
+	    u_int8_t hello_priority;
+	    u_int32_t hello_deadint;
+	    struct in_addr hello_dr;
+	    struct in_addr hello_bdr;
+	    struct in_addr hello_neighbor[1]; /* may repeat	*/
+	} un_hello;
+
+	/* Database Description packet */
+	struct {
+	    u_int16_t db_ifmtu;
+	    u_int8_t db_options;
+	    u_int8_t db_flags;
+	    u_int32_t db_seq;
+	    struct lsa_hdr db_lshdr[1]; /* may repeat	*/
+	} un_db;
+
+	/* Link State Request */
+	struct lsr {
+	    u_int8_t ls_type[4];
+            union {
+                struct in_addr ls_stateid;
+                struct { /* opaque LSAs change the LSA-ID field */
+                    u_int8_t opaque_type;
+                    u_int8_t opaque_id[3];
+                } opaque_field;
+            } un_ls_stateid;
+	    struct in_addr ls_router;
+	} un_lsr[1];		/* may repeat	*/
+
+	/* Link State Update */
+	struct {
+	    u_int32_t lsu_count;
+	    struct lsa lsu_lsa[1]; /* may repeat	*/
+	} un_lsu;
+
+	/* Link State Acknowledgement */
+	struct {
+	    struct lsa_hdr lsa_lshdr[1]; /* may repeat	*/
+	} un_lsa ;
+    } ospf_un ;
+};
+
+#define	ospf_hello	ospf_un.un_hello
+#define	ospf_db		ospf_un.un_db
+#define	ospf_lsr	ospf_un.un_lsr
+#define	ospf_lsu	ospf_un.un_lsu
+#define	ospf_lsa	ospf_un.un_lsa
+
+/* Functions shared by ospf and ospf6 */
+extern int ospf_print_te_lsa(const u_int8_t *, u_int);
+extern int ospf_print_grace_lsa(const u_int8_t *, u_int);