1 files changed, 69 insertions, 0 deletions
diff --git a/lib/ldp_sync.h b/lib/ldp_sync.h
new file mode 100644
index 0000000..f7601eb
--- /dev/null
+++ b/lib/ldp_sync.h
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Defines and structures common to LDP-Sync for OSPFv2 and OSPFv3 and ISIS
+ * Copyright (C) 2020 Volta Networks, Inc.
+ */
+
+#ifndef _LIBLDPSYNC_H
+#define _LIBLDPSYNC_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* LDP-IGP Sync values */
+#define LDP_SYNC_FLAG_ENABLE     (1 << 0) /* LDP-SYNC enabled */
+#define LDP_SYNC_FLAG_HOLDDOWN   (1 << 1) /* Holddown timer enabled */
+#define LDP_SYNC_FLAG_IF_CONFIG  (1 << 2) /* LDP-SYNC enabled on interface */
+#define LDP_SYNC_FLAG_SET_METRIC (1 << 3) /* Metric has been set on ISIS intf */
+
+#define LDP_IGP_SYNC_DEFAULT        0
+#define LDP_IGP_SYNC_ENABLED        1
+
+#define LDP_IGP_SYNC_STATE_NOT_REQUIRED     0
+#define LDP_IGP_SYNC_STATE_REQUIRED_NOT_UP  1
+#define LDP_IGP_SYNC_STATE_REQUIRED_UP      2
+
+#define LDP_IGP_SYNC_HOLDDOWN_DEFAULT 0
+
+/* LDP-IGP Sync structures */
+struct ldp_sync_info_cmd {
+	uint16_t flags;
+	uint16_t holddown;       /* timer value */
+};
+
+struct ldp_sync_info {
+	uint16_t flags;          /* indicate if set on interface or globally */
+	uint8_t enabled;         /* enabled */
+	uint8_t state;           /* running state */
+	uint16_t holddown;       /* timer value */
+	struct event *t_holddown; /* holddown timer*/
+	uint32_t metric[2];      /* isis interface metric */
+};
+
+/* Prototypes. */
+extern struct ldp_sync_info *ldp_sync_info_create(void);
+extern bool ldp_sync_if_is_enabled(struct ldp_sync_info *ldp_sync_info);
+extern bool ldp_sync_if_down(struct ldp_sync_info *ldp_sync_info);
+extern void ldp_sync_info_free(struct ldp_sync_info **ldp_sync_info);
+
+struct ldp_igp_sync_announce {
+	int proto;
+};
+
+struct ldp_igp_sync_if_state {
+	ifindex_t ifindex;
+	bool sync_start;
+};
+
+struct ldp_igp_sync_if_state_req {
+	int proto;
+	ifindex_t ifindex;
+	char name[INTERFACE_NAMSIZ];
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LIBLDPSYNC_H */