Initial revision

1 files changed, 132 insertions, 0 deletions

diff --git a/isisd/isis_lsp.h b/isisd/isis_lsp.h
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+++ b/isisd/isis_lsp.h
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+/*
+ * IS-IS Rout(e)ing protocol - isis_lsp.h   
+ *                             LSP processing
+ *
+ * Copyright (C) 2001,2002   Sampo Saaristo
+ *                           Tampere University of Technology      
+ *                           Institute of Communications Engineering
+ *
+ * This program is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU General Public Licenseas published by the Free 
+ * Software Foundation; either version 2 of the License, or (at your option) 
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,but WITHOUT 
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
+ * more details.
+
+ * You should have received a copy of the GNU General Public License along 
+ * with this program; if not, write to the Free Software Foundation, Inc., 
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef _ZEBRA_ISIS_LSP_H
+#define _ZEBRA_ISIS_LSP_H
+
+/* The grand plan is to support 1024 circuits so we have 32*32 bit flags
+ * the support will be achived using the newest drafts */
+#define ISIS_MAX_CIRCUITS 32 /* = 1024 */ /*FIXME:defined in flags.h as well*/
+
+/* Structure for isis_lsp, this structure will only support the fixed
+ * System ID (Currently 6) (atleast for now). In order to support more
+ * We will have to split the header into two parts, and for readability
+ * sake it should better be avoided */
+struct isis_lsp
+{
+  struct isis_fixed_hdr *isis_header;       /* normally equals pdu */
+  struct isis_link_state_hdr *lsp_header;   /* pdu + isis_header_len */
+  struct stream *pdu;                       /* full pdu lsp */
+  union {
+    struct list *frags;
+    struct isis_lsp *zero_lsp;
+  } lspu;
+  u_int32_t SRMflags[ISIS_MAX_CIRCUITS];
+  u_int32_t SSNflags[ISIS_MAX_CIRCUITS];
+  u_int32_t rexmit_queue[ISIS_MAX_CIRCUITS];
+  int level;                                /* L1 or L2? */
+  int purged;                               /* have purged this one */
+  int scheduled;                            /* scheduled for sending */
+  time_t installed;
+  time_t last_generated;
+  time_t last_sent;
+  int own_lsp;
+#ifdef TOPOLOGY_GENERATE
+  int from_topology;
+  struct thread *t_lsp_top_ref;
+#endif
+  /* used for 60 second counting when rem_lifetime is zero */
+  int age_out; 
+  struct isis_adjacency *adj;
+  struct tlvs tlv_data;                     /* Simplifies TLV access */
+};
+
+dict_t *lsp_db_init (void);
+void lsp_db_destroy (dict_t *lspdb);
+int lsp_tick (struct thread *thread);
+
+int lsp_l1_generate (struct isis_area *area);
+int lsp_l2_generate (struct isis_area *area);
+int lsp_refresh_l1 (struct thread *thread);
+int lsp_refresh_l2 (struct thread *thread);
+int lsp_regenerate_schedule (struct isis_area *area);
+
+int lsp_l1_pseudo_generate (struct isis_circuit *circuit);
+int lsp_l2_pseudo_generate (struct isis_circuit *circuit);
+int lsp_l1_refresh_pseudo  (struct thread *thread);
+int lsp_l2_refresh_pseudo  (struct thread *thread);
+int isis_lsp_authinfo_check (struct stream *stream, struct isis_area *area,
+			     int  pdulen, struct isis_passwd *passwd);
+struct isis_lsp *lsp_new (u_char *lsp_id, u_int16_t rem_lifetime, 
+                          u_int32_t seq_num, u_int8_t lsp_bits, 
+                          u_int16_t checksum, int level);
+struct isis_lsp *lsp_new_from_stream_ptr (struct stream *stream, 
+					  u_int16_t pdu_len,  
+                                          struct isis_lsp *lsp0, 
+                                          struct isis_area *area);
+void lsp_insert (struct isis_lsp *lsp, dict_t *lspdb);
+struct isis_lsp *lsp_search (u_char *id, dict_t *lspdb);
+
+void lsp_build_list (u_char *start_id, u_char *stop_id, 
+                     struct list *list, dict_t *lspdb);
+void lsp_build_list_nonzero_ht (u_char *start_id, u_char *stop_id, 
+                                struct list *list, dict_t *lspdb);
+void lsp_build_list_ssn (struct isis_circuit *circuit, struct list *list, 
+                         dict_t *lspdb);
+
+void lsp_search_and_destroy (u_char *id, dict_t *lspdb);
+void lsp_purge_dr (u_char *id, struct isis_circuit *circuit, int level);
+void lsp_purge_non_exist (struct isis_link_state_hdr *lsp_hdr, 
+                          struct isis_area *area);
+
+#define LSP_EQUAL 1
+#define LSP_NEWER 2
+#define LSP_OLDER 3
+
+#define LSP_PSEUDO_ID(I) ((u_char)(I)[ISIS_SYS_ID_LEN])
+#define LSP_FRAGMENT(I) ((u_char)(I)[ISIS_SYS_ID_LEN + 1])
+#define OWNLSPID(I) \
+        memcpy ((I), isis->sysid, ISIS_SYS_ID_LEN);\
+        (I)[ISIS_SYS_ID_LEN] = 0;\
+        (I)[ISIS_SYS_ID_LEN + 1] = 0
+int lsp_id_cmp (u_char *id1, u_char *id2);
+int lsp_compare (char *areatag, struct isis_lsp *lsp, u_int32_t seq_num, 
+                 u_int16_t checksum, u_int16_t rem_lifetime);
+void lsp_update (struct isis_lsp *lsp, struct isis_link_state_hdr *lsp_hdr,
+                 struct stream *stream, struct isis_area *area);
+void lsp_inc_seqnum (struct isis_lsp *lsp, u_int32_t seq_num);
+int lsp_print_all (struct vty *vty, dict_t *lspdb, char detail, char dynhost);
+char *lsp_bits2string (u_char *);
+
+/* staticly assigned vars for printing purposes */
+char lsp_bits_string[200]; /* FIXME: enough ? */
+
+#ifdef TOPOLOGY_GENERATE
+void generate_topology_lsps (struct isis_area *area);
+void remove_topology_lsps (struct isis_area *area);
+void build_topology_lsp_data (struct isis_lsp *lsp,
+            struct isis_area *area, int lsp_top_num);
+#endif /* TOPOLOGY_GENERATE */
+
+#endif /* ISIS_LSP */
+