Adding upstream version 9.1.upstream/9.1

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

1 files changed, 157 insertions, 0 deletions

diff --git a/ospfd/ospf_asbr.h b/ospfd/ospf_asbr.h
new file mode 100644
index 0000000..6158d65
--- /dev/null
+++ b/ospfd/ospf_asbr.h
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * OSPF AS Boundary Router functions.
+ * Copyright (C) 1999, 2000 Kunihiro Ishiguro, Toshiaki Takada
+ */
+
+#ifndef _ZEBRA_OSPF_ASBR_H
+#define _ZEBRA_OSPF_ASBR_H
+
+struct route_map_set_values {
+	int32_t metric;
+	int32_t metric_type;
+};
+
+/* Redistributed external information. */
+struct external_info {
+	struct ospf *ospf;
+
+	/* Type of source protocol. */
+	uint8_t type;
+
+	unsigned short instance;
+
+	/* Prefix. */
+	struct prefix_ipv4 p;
+
+	/* Interface index. */
+	ifindex_t ifindex;
+
+	/* Nexthop address. */
+	struct in_addr nexthop;
+
+	/* Additional Route tag. */
+	route_tag_t tag;
+
+	/* Actual tag received from zebra*/
+	route_tag_t orig_tag;
+
+	uint32_t metric;
+	uint32_t min_metric;
+	uint32_t max_metric;
+
+	struct route_map_set_values route_map_set;
+#define ROUTEMAP_METRIC(E) (E)->route_map_set.metric
+#define ROUTEMAP_METRIC_TYPE(E) (E)->route_map_set.metric_type
+
+	/* Back pointer to summary address */
+	struct ospf_external_aggr_rt *aggr_route;
+
+	/* To identify the routes to be originated
+	 * after a summary address deletion.
+	 */
+	bool to_be_processed;
+};
+
+#define OSPF_EXTL_AGGR_DEFAULT_DELAY 5
+
+#define OSPF_EXTERNAL_RT_COUNT(aggr)                                           \
+	(((struct ospf_external_aggr_rt *)aggr)->match_extnl_hash->count)
+
+enum ospf_aggr_action_t {
+	OSPF_ROUTE_AGGR_NONE = 0,
+	OSPF_ROUTE_AGGR_ADD,
+	OSPF_ROUTE_AGGR_DEL,
+	OSPF_ROUTE_AGGR_MODIFY
+};
+
+#define OSPF_SUCCESS 1
+#define OSPF_FAILURE 0
+#define OSPF_INVALID -1
+
+#define OSPF_EXTERNAL_AGGRT_NO_ADVERTISE 0x1
+#define OSPF_EXTERNAL_AGGRT_ORIGINATED 0x2
+
+/* Data structures for external route aggregator */
+struct ospf_external_aggr_rt {
+	/* Prefix. */
+	struct prefix_ipv4 p;
+
+	/* Bit 1 : Dont advertise.
+	 * Bit 2 : Originated as Type-5
+	 */
+	uint8_t flags;
+
+	/* Tag for summary route */
+	route_tag_t tag;
+
+	/* Action to be done at the delay
+	 * timer expairy.
+	 */
+	enum ospf_aggr_action_t action;
+
+	/* Hash Table of external routes */
+	struct hash *match_extnl_hash;
+};
+
+#define OSPF_ASBR_CHECK_DELAY 30
+#define OSPF_ASBR_REDIST_UPDATE_DELAY 9
+
+extern void ospf_external_route_remove(struct ospf *, struct prefix_ipv4 *);
+extern struct external_info *ospf_external_info_new(struct ospf *, uint8_t,
+						    unsigned short);
+extern void ospf_reset_route_map_set_values(struct route_map_set_values *);
+extern int ospf_route_map_set_compare(struct route_map_set_values *,
+				      struct route_map_set_values *);
+extern struct external_info *
+ospf_external_info_add(struct ospf *, uint8_t, unsigned short,
+		       struct prefix_ipv4, ifindex_t, struct in_addr,
+		       route_tag_t, uint32_t metric);
+extern void ospf_external_info_delete(struct ospf *, uint8_t, unsigned short,
+				      struct prefix_ipv4);
+extern struct external_info *ospf_external_info_lookup(struct ospf *, uint8_t,
+						       unsigned short,
+						       struct prefix_ipv4 *);
+extern void ospf_asbr_status_update(struct ospf *, uint8_t);
+extern void ospf_schedule_asbr_redist_update(struct ospf *ospf);
+
+extern void ospf_redistribute_withdraw(struct ospf *, uint8_t, unsigned short);
+extern void ospf_asbr_check(void);
+extern void ospf_schedule_asbr_check(void);
+extern void ospf_asbr_route_install_lsa(struct ospf_lsa *);
+extern struct ospf_lsa *ospf_external_info_find_lsa(struct ospf *,
+						    struct prefix_ipv4 *p);
+
+/* External Route Aggregator */
+extern void ospf_asbr_external_aggregator_init(struct ospf *instance);
+extern void ospf_external_aggregator_free(struct ospf_external_aggr_rt *aggr);
+extern bool is_valid_summary_addr(struct prefix_ipv4 *p);
+extern struct ospf_external_aggr_rt *
+ospf_external_aggr_match(struct ospf *ospf, struct prefix_ipv4 *p);
+extern void ospf_unlink_ei_from_aggr(struct ospf *ospf,
+				     struct ospf_external_aggr_rt *aggr,
+				     struct external_info *ei);
+extern struct ospf_lsa *
+ospf_originate_summary_lsa(struct ospf *ospf,
+			   struct ospf_external_aggr_rt *aggr,
+			   struct external_info *ei);
+extern int ospf_external_aggregator_timer_set(struct ospf *ospf,
+					      uint16_t interval);
+extern void ospf_external_aggrigator_free(struct ospf_external_aggr_rt *aggr);
+
+extern struct ospf_external_aggr_rt *
+ospf_extrenal_aggregator_lookup(struct ospf *ospf, struct prefix_ipv4 *p);
+
+void ospf_unset_all_aggr_flag(struct ospf *ospf);
+
+extern int ospf_asbr_external_aggregator_set(struct ospf *ospf,
+					     struct prefix_ipv4 *p,
+					     route_tag_t tag);
+extern int ospf_asbr_external_aggregator_unset(struct ospf *ospf,
+					       struct prefix_ipv4 *p,
+					       route_tag_t tag);
+extern int ospf_asbr_external_rt_no_advertise(struct ospf *ospf,
+					      struct prefix_ipv4 *p);
+extern int ospf_asbr_external_rt_advertise(struct ospf *ospf,
+					   struct prefix_ipv4 *p);
+#endif /* _ZEBRA_OSPF_ASBR_H */