Adding upstream version 9.1.upstream/9.1

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

1 files changed, 153 insertions, 0 deletions

diff --git a/isisd/isis_lsp.h b/isisd/isis_lsp.h
new file mode 100644
index 0000000..3839a95
--- /dev/null
+++ b/isisd/isis_lsp.h
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 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
+ */
+
+#ifndef _ZEBRA_ISIS_LSP_H
+#define _ZEBRA_ISIS_LSP_H
+
+#include "lib/typesafe.h"
+#include "isisd/isis_pdu.h"
+
+PREDECL_RBTREE_UNIQ(lspdb);
+
+struct isis;
+/* 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 lspdb_item dbe;
+
+	struct isis_lsp_hdr hdr;
+	struct stream *pdu; /* full pdu lsp */
+	union {
+		struct list *frags;
+		struct isis_lsp *zero_lsp;
+	} lspu;
+	uint32_t SSNflags[ISIS_MAX_CIRCUITS];
+	int level;     /* L1 or L2? */
+	int scheduled; /* scheduled for sending */
+	time_t installed;
+	time_t last_generated;
+	int own_lsp;
+	/* used for 60 second counting when rem_lifetime is zero */
+	int age_out;
+	struct isis_area *area;
+	struct isis_tlvs *tlvs;
+
+	time_t flooding_time;
+	struct list *flooding_neighbors[TX_LSP_CIRCUIT_SCOPED + 1];
+	char *flooding_interface;
+	bool flooding_circuit_scoped;
+};
+
+extern int lspdb_compare(const struct isis_lsp *a, const struct isis_lsp *b);
+DECLARE_RBTREE_UNIQ(lspdb, struct isis_lsp, dbe, lspdb_compare);
+
+void lsp_db_init(struct lspdb_head *head);
+void lsp_db_fini(struct lspdb_head *head);
+void lsp_tick(struct event *thread);
+void set_overload_on_start_timer(struct event *thread);
+
+int lsp_generate(struct isis_area *area, int level);
+#define lsp_regenerate_schedule(area, level, all_pseudo) \
+	_lsp_regenerate_schedule((area), (level), (all_pseudo), true, \
+				 __func__, __FILE__, __LINE__)
+int _lsp_regenerate_schedule(struct isis_area *area, int level,
+			     int all_pseudo, bool postpone,
+			     const char *func, const char *file, int line);
+int lsp_generate_pseudo(struct isis_circuit *circuit, int level);
+int lsp_regenerate_schedule_pseudo(struct isis_circuit *circuit, int level);
+
+bool isis_level2_adj_up(struct isis_area *area);
+
+struct isis_lsp *lsp_new(struct isis_area *area, uint8_t *lsp_id,
+			 uint16_t rem_lifetime, uint32_t seq_num,
+			 uint8_t lsp_bits, uint16_t checksum,
+			 struct isis_lsp *lsp0, int level);
+struct isis_lsp *lsp_new_from_recv(struct isis_lsp_hdr *hdr,
+				   struct isis_tlvs *tlvs,
+				   struct stream *stream, struct isis_lsp *lsp0,
+				   struct isis_area *area, int level);
+void lsp_insert(struct lspdb_head *head, struct isis_lsp *lsp);
+struct isis_lsp *lsp_search(struct lspdb_head *head, const uint8_t *id);
+
+void lsp_build_list(struct lspdb_head *head, const uint8_t *start_id,
+		    const uint8_t *stop_id, uint8_t num_lsps,
+		    struct list *list);
+void lsp_build_list_nonzero_ht(struct lspdb_head *head,
+			       const uint8_t *start_id,
+			       const uint8_t *stop_id, struct list *list);
+void lsp_search_and_destroy(struct lspdb_head *head, const uint8_t *id);
+void lsp_purge_pseudo(uint8_t *id, struct isis_circuit *circuit, int level);
+void lsp_purge_non_exist(int level, struct isis_lsp_hdr *hdr,
+			 struct isis_area *area);
+
+#define LSP_EQUAL 1
+#define LSP_NEWER 2
+#define LSP_OLDER 3
+
+#define LSP_PSEUDO_ID(I) ((I)[ISIS_SYS_ID_LEN])
+#define LSP_FRAGMENT(I) ((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(uint8_t *id1, uint8_t *id2);
+int lsp_compare(char *areatag, struct isis_lsp *lsp, uint32_t seqno,
+		uint16_t checksum, uint16_t rem_lifetime);
+void lsp_update(struct isis_lsp *lsp, struct isis_lsp_hdr *hdr,
+		struct isis_tlvs *tlvs, struct stream *stream,
+		struct isis_area *area, int level, bool confusion);
+void lsp_inc_seqno(struct isis_lsp *lsp, uint32_t seqno);
+void lspid_print(uint8_t *lsp_id, char *dest, size_t dest_len, char dynhost,
+		 char frag, struct isis *isis);
+void lsp_print_common(struct isis_lsp *lsp, struct vty *vty,
+		      struct json_object *json, char dynhost,
+		      struct isis *isis);
+void lsp_print_vty(struct isis_lsp *lsp, struct vty *vty, char dynhost,
+		   struct isis *isis);
+void lsp_print_json(struct isis_lsp *lsp, struct json_object *json,
+		    char dynhost, struct isis *isis);
+void lsp_print_detail(struct isis_lsp *lsp, struct vty *vty,
+		      struct json_object *json, char dynhost,
+		      struct isis *isis);
+int lsp_print_all(struct vty *vty, struct json_object *json,
+		  struct lspdb_head *head, char detail, char dynhost,
+		  struct isis *isis);
+/* sets SRMflags for all active circuits of an lsp */
+void lsp_set_all_srmflags(struct isis_lsp *lsp, bool set);
+
+#define LSP_ITER_CONTINUE 0
+#define LSP_ITER_STOP -1
+
+/* Callback used by isis_lsp_iterate_ip_reach() function. */
+struct isis_subtlvs;
+typedef int (*lsp_ip_reach_iter_cb)(const struct prefix *prefix,
+				    uint32_t metric, bool external,
+				    struct isis_subtlvs *subtlvs, void *arg);
+
+/* Callback used by isis_lsp_iterate_is_reach() function. */
+typedef int (*lsp_is_reach_iter_cb)(const uint8_t *id, uint32_t metric,
+				    bool oldmetric,
+				    struct isis_ext_subtlvs *subtlvs,
+				    void *arg);
+
+int isis_lsp_iterate_ip_reach(struct isis_lsp *lsp, int family, uint16_t mtid,
+			      lsp_ip_reach_iter_cb cb, void *arg);
+int isis_lsp_iterate_is_reach(struct isis_lsp *lsp, uint16_t mtid,
+			      lsp_is_reach_iter_cb cb, void *arg);
+
+#define lsp_flood(lsp, circuit) \
+	_lsp_flood((lsp), (circuit), __func__, __FILE__, __LINE__)
+void _lsp_flood(struct isis_lsp *lsp, struct isis_circuit *circuit,
+		const char *func, const char *file, int line);
+void lsp_init(void);
+
+#endif /* ISIS_LSP */