From Benjamin Roch:

This contains the source for dissecting TTEthernet packets (including Protocol Control Frames) conforming to our TTEthernet specification as dissector for Wireshark.

svn path=/trunk/; revision=26955

1 files changed, 226 insertions, 0 deletions

diff --git a/epan/dissectors/packet-tte-pcf.c b/epan/dissectors/packet-tte-pcf.c
new file mode 100644
index 0000000000..d2832daef7
--- /dev/null
+++ b/epan/dissectors/packet-tte-pcf.c
@@ -0,0 +1,226 @@
+/* packet-tte-pcf.c
+ * Routines for Time Triggered Ethernet Protocol Control Frame dissection
+ *
+ * Author: Valentin Ecker, valentin.ecker (AT) tttech.com
+ * TTTech Computertechnik AG, Austria.
+ * http://www.tttech.com/solutions/ttethernet/
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+
+#include <epan/packet.h>
+#include <epan/etypes.h>
+
+#include "packet-tte.h"
+
+
+/* Forward declaration we need below */
+void proto_reg_handoff_tte_pcf(void);
+
+/* Initialize the protocol and registered fields */
+static int proto_tte_pcf = -1;
+
+static int hf_tte_pcf = -1;
+static int hf_tte_pcf_ic = -1;
+static int hf_tte_pcf_mn = -1;
+static int hf_tte_pcf_res0 = -1;
+static int hf_tte_pcf_sp = -1;
+static int hf_tte_pcf_sd = -1;
+static int hf_tte_pcf_type = -1;
+static int hf_tte_pcf_res1 = -1;
+static int hf_tte_pcf_tc = -1;
+
+/* Initialize the subtree pointers */
+static gint ett_tte_pcf = -1;
+
+
+/* Code to actually dissect the packets */
+static void
+dissect_tte_pcf(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+    /* Set up structures needed to add the protocol subtree and manage it */
+    proto_item *tte_pcf_root_item;
+    proto_tree *tte_pcf_tree;
+
+    /* variables used to store the fields displayed in the info_column */
+    guint8 sync_priority = 0;
+    guint8 sync_domain   = 0;
+
+    /* Check that there's enough data */
+    if (tvb_length(tvb) < TTE_PCF_LENGTH )
+    {
+        return;
+    }
+
+    /* get sync_priority and sync_domain */
+    sync_priority = tvb_get_guint8(tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
+        TTE_PCF_RES0_LENGTH);
+    sync_domain = tvb_get_guint8(tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
+        TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH);
+
+    /* Make entries in Protocol column and Info column on summary display */
+    if (check_col(pinfo->cinfo, COL_PROTOCOL))
+        col_set_str(pinfo->cinfo, COL_PROTOCOL, "PCF");
+
+    if (check_col(pinfo->cinfo, COL_INFO))
+        col_add_fstr(pinfo->cinfo, COL_INFO,
+            "Sync Domain: 0x%02X  Sync Priority: 0x%02X",
+            sync_domain, sync_priority);
+
+    if (tree) {
+
+        /* create display subtree for the protocol */
+        tte_pcf_root_item = proto_tree_add_item(tree, proto_tte_pcf, tvb, 0,
+            TTE_PCF_LENGTH, FALSE);
+
+        tte_pcf_tree = proto_item_add_subtree(tte_pcf_root_item, ett_tte_pcf);
+
+        proto_tree_add_item(tte_pcf_tree,
+            hf_tte_pcf_ic, tvb, 0, TTE_PCF_IC_LENGTH, FALSE);
+
+        proto_tree_add_item(tte_pcf_tree,
+            hf_tte_pcf_mn, tvb, TTE_PCF_IC_LENGTH, TTE_PCF_MN_LENGTH, FALSE);
+
+     /* RESERVED FIELD --- will not be displayed */
+     /* proto_tree_add_item(tte_pcf_tree,
+            hf_tte_pcf_res0, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH,
+            TTE_PCF_RES0_LENGTH, FALSE); */
+
+        proto_tree_add_item(tte_pcf_tree,
+            hf_tte_pcf_sp, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
+            TTE_PCF_RES0_LENGTH, TTE_PCF_SP_LENGTH, FALSE);
+
+        proto_tree_add_item(tte_pcf_tree,
+            hf_tte_pcf_sd, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
+            TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH, TTE_PCF_SD_LENGTH, FALSE);
+
+        proto_tree_add_item(tte_pcf_tree,
+            hf_tte_pcf_type, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
+            TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH+TTE_PCF_SD_LENGTH,
+            TTE_PCF_TYPE_LENGTH, FALSE);
+
+     /* RESERVED FIELD --- will not be displayed */
+     /* proto_tree_add_item(tte_pcf_tree,
+            hf_tte_pcf_res1, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
+            TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH+TTE_PCF_SD_LENGTH+
+            TTE_PCF_TYPE_LENGTH, TTE_PCF_RES1_LENGTH, FALSE); */
+
+        proto_tree_add_item(tte_pcf_tree,
+            hf_tte_pcf_tc, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
+            TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH+TTE_PCF_SD_LENGTH+
+            TTE_PCF_TYPE_LENGTH+TTE_PCF_RES1_LENGTH, TTE_PCF_TC_LENGTH, FALSE);
+    }
+
+}
+
+
+void
+proto_register_tte_pcf(void)
+{
+    static hf_register_info hf[] = {
+
+        { &hf_tte_pcf,
+            { "Protocol Control Frame", "tte.pcf",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL }
+        },
+        { &hf_tte_pcf_ic,
+            { "Integration Cycle", "tte.pcf.ic",
+            FT_UINT32, BASE_HEX, NULL, 0x0,
+            NULL, HFILL }
+        },
+            { &hf_tte_pcf_mn,
+            { "Membership New", "tte.pcf.mn",
+            FT_UINT32, BASE_HEX, NULL, 0x0,
+            NULL, HFILL }
+        },
+            { &hf_tte_pcf_res0,
+            { "Reserved 0", "tte.pcf.res0",
+            FT_UINT32, BASE_HEX, NULL, 0x0,
+            NULL, HFILL }
+        },
+        { &hf_tte_pcf_sp,
+            { "Sync Priority", "tte.pcf.sp",
+            FT_UINT8, BASE_HEX, NULL, 0x0,
+            NULL, HFILL }
+        },
+        { &hf_tte_pcf_sd,
+            { "Sync Domain", "tte.pcf.sd",
+            FT_UINT8, BASE_HEX, NULL, 0x0,
+            NULL, HFILL }
+        },
+        { &hf_tte_pcf_type,
+            { "Type", "tte.pcf.type",
+            FT_UINT8, BASE_HEX, NULL, 0xF0,
+            NULL, HFILL }
+        },
+        { &hf_tte_pcf_res1,
+            { "Reserved 1", "tte.pcf.res1",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL }
+        },
+        { &hf_tte_pcf_tc,
+            { "Transparent Clock", "tte.pcf.tc",
+            FT_UINT64, BASE_HEX, NULL, 0x0,
+            NULL, HFILL }
+        }
+    };
+
+    /* Setup protocol subtree array */
+    static gint *ett[] = {
+        &ett_tte_pcf
+    };
+
+    /* Register the protocol name and description */
+    proto_tte_pcf = proto_register_protocol("TTEthernet Protocol Control Frame",
+        "TTE PCF", "tte_pcf");
+
+    /* Required function calls to register header fields and subtrees used */
+    proto_register_field_array(proto_tte_pcf, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+
+    register_dissector("tte_pcf", dissect_tte_pcf, proto_tte_pcf);
+
+}
+
+
+void
+proto_reg_handoff_tte_pcf(void)
+{
+    dissector_handle_t tte_pcf_handle;
+
+    /* initialize the pcf handle */
+    tte_pcf_handle = create_dissector_handle(dissect_tte_pcf, proto_tte_pcf);
+
+    dissector_add("ethertype", ETHERTYPE_TTE_PCF, tte_pcf_handle);
+
+}
+