1 files changed, 115 insertions, 0 deletions
diff --git a/usr/src/lib/librstp/common/edge.c b/usr/src/lib/librstp/common/edge.c
new file mode 100644
index 0000000000..8b3c3029e6
--- /dev/null
+++ b/usr/src/lib/librstp/common/edge.c
@@ -0,0 +1,115 @@
+/************************************************************************ 
+ * RSTP library - Rapid Spanning Tree (802.1t, 802.1w) 
+ * Copyright (C) 2001-2003 Optical Access 
+ * Author: Alex Rozin 
+ * 
+ * This file is part of RSTP library. 
+ * 
+ * RSTP library is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU Lesser General Public License as published by the 
+ * Free Software Foundation; version 2.1 
+ * 
+ * RSTP library 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 Lesser 
+ * General Public License for more details. 
+ * 
+ * You should have received a copy of the GNU Lesser General Public License 
+ * along with RSTP library; see the file COPYING.  If not, write to the Free 
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 
+ * 02111-1307, USA. 
+ **********************************************************************/
+
+/* Note: this state mashine distinkts from described in P802.1t Clause 18. */
+/* I am ready to discuss it                                                */
+ 
+#include "base.h"
+#include "stpm.h"
+#include "stp_vectors.h"
+
+#define STATES {        \
+  CHOOSE(DISABLED),         \
+  CHOOSE(DETECTED),     \
+  CHOOSE(DELAYED),     \
+  CHOOSE(RESOLVED)     \
+}
+
+#define GET_STATE_NAME STP_edge_get_state_name
+#include "choose.h"
+
+#define DEFAULT_LINK_DELAY  3
+
+void
+STP_edge_enter_state (STATE_MACH_T *s)
+{
+  register PORT_T *port = s->owner.port;
+
+  switch (s->State) {
+    case BEGIN:
+      break;
+    case DISABLED:
+      port->operEdge = port->adminEdge;
+      port->wasInitBpdu = False;
+      port->lnkWhile = 0;
+      port->portEnabled = False;
+      break;
+    case DETECTED:
+      port->portEnabled = True;
+      port->lnkWhile = port->LinkDelay;
+      port->operEdge = False;
+      break;
+    case DELAYED:
+      break;
+    case RESOLVED:
+      if (! port->wasInitBpdu) {
+          port->operEdge = port->adminEdge;
+      }
+      break;
+  }
+}
+
+Bool
+STP_edge_check_conditions (STATE_MACH_T *s)
+{
+  register PORT_T *port = s->owner.port;
+
+  /* If we're disabled, then stay that way. */
+  if (!port->adminEnable) {
+    if (s->State == DISABLED)
+      return False;
+    else
+      return STP_hop_2_state (s, DISABLED);
+  }
+
+  switch (s->State) {
+    case BEGIN:
+      return STP_hop_2_state (s, DISABLED);
+    case DISABLED:
+      if (port->adminEnable) {
+        return STP_hop_2_state (s, DETECTED);
+      }
+      break;
+    case DETECTED:
+      return STP_hop_2_state (s, DELAYED);
+    case DELAYED:
+      if (port->wasInitBpdu) {
+#ifdef STP_DBG
+        if (s->debug)
+            stp_trace ("port %s 'edge' resolved by BPDU", port->port_name);
+#endif
+        return STP_hop_2_state (s, RESOLVED);
+      }
+
+      if (! port->lnkWhile)  {
+#ifdef STP_DBG
+        if (s->debug)
+          stp_trace ("port %s 'edge' resolved by timer", port->port_name);
+#endif        
+        return STP_hop_2_state (s, RESOLVED);
+      }
+      break;
+    case RESOLVED:
+      break;
+  }
+  return False;
+}