Adding upstream version 9.1.upstream/9.1

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

1 files changed, 84 insertions, 0 deletions

diff --git a/ospfd/ospf_ism.h b/ospfd/ospf_ism.h
new file mode 100644
index 0000000..bbb059c
--- /dev/null
+++ b/ospfd/ospf_ism.h
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * OSPF version 2  Interface State Machine.
+ *   From RFC2328 [OSPF Version 2]
+ * Copyright (C) 1999 Toshiaki Takada
+ */
+
+#ifndef _ZEBRA_OSPF_ISM_H
+#define _ZEBRA_OSPF_ISM_H
+
+#include "hook.h"
+
+/* OSPF Interface State Machine Status. */
+#define ISM_DependUpon                    0
+#define ISM_Down                          1
+#define ISM_Loopback                      2
+#define ISM_Waiting                       3
+#define ISM_PointToPoint                  4
+#define ISM_DROther                       5
+#define ISM_Backup                        6
+#define ISM_DR                            7
+#define OSPF_ISM_STATE_MAX   	          8
+
+/* OSPF Interface State Machine Event. */
+#define ISM_NoEvent                       0
+#define ISM_InterfaceUp                   1
+#define ISM_WaitTimer                     2
+#define ISM_BackupSeen                    3
+#define ISM_NeighborChange                4
+#define ISM_LoopInd                       5
+#define ISM_UnloopInd                     6
+#define ISM_InterfaceDown                 7
+#define OSPF_ISM_EVENT_MAX                8
+
+#define OSPF_ISM_WRITE_ON(O)                                                   \
+	do {                                                                   \
+		if (oi->on_write_q == 0) {                                     \
+			listnode_add((O)->oi_write_q, oi);                     \
+			oi->on_write_q = 1;                                    \
+		}                                                              \
+		if (!list_isempty((O)->oi_write_q))                            \
+			event_add_write(master, ospf_write, (O), (O)->fd,      \
+					&(O)->t_write);                        \
+	} while (0)
+
+/* Macro for OSPF ISM timer turn on. */
+#define OSPF_ISM_TIMER_ON(T, F, V) event_add_timer(master, (F), oi, (V), &(T))
+
+#define OSPF_ISM_TIMER_MSEC_ON(T, F, V)                                        \
+	event_add_timer_msec(master, (F), oi, (V), &(T))
+
+/* convenience macro to set hello timer correctly, according to
+ * whether fast-hello is set or not
+ */
+#define OSPF_HELLO_TIMER_ON(O)                                                 \
+	do {                                                                   \
+		if (OSPF_IF_PARAM((O), fast_hello))                            \
+			OSPF_ISM_TIMER_MSEC_ON(                                \
+				(O)->t_hello, ospf_hello_timer,                \
+				1000 / OSPF_IF_PARAM((O), fast_hello));        \
+		else                                                           \
+			OSPF_ISM_TIMER_ON((O)->t_hello, ospf_hello_timer,      \
+					  OSPF_IF_PARAM((O), v_hello));        \
+	} while (0)
+
+/* Macro for OSPF schedule event. */
+#define OSPF_ISM_EVENT_SCHEDULE(I, E)                                          \
+	event_add_event(master, ospf_ism_event, (I), (E), NULL)
+
+/* Macro for OSPF execute event. */
+#define OSPF_ISM_EVENT_EXECUTE(I, E)                                           \
+	event_execute(master, ospf_ism_event, (I), (E), NULL)
+
+/* Prototypes. */
+extern void ospf_ism_event(struct event *thread);
+extern void ism_change_status(struct ospf_interface *, int);
+extern void ospf_hello_timer(struct event *thread);
+extern int ospf_dr_election(struct ospf_interface *oi);
+
+DECLARE_HOOK(ospf_ism_change,
+	     (struct ospf_interface * oi, int state, int oldstate),
+	     (oi, state, oldstate));
+
+#endif /* _ZEBRA_OSPF_ISM_H */