--- /dev/null
+/* packet-maap.c
+ * Routines for 802.3 MAC Address Allocation Protocol defined by IEEE1722
+ * Copyright 2012, Jason Damori, Biamp Systems <jdamori at biamp dot com>
+ *
+ * $Id$
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* #include <stdio.h> */
+
+#include <epan/packet.h>
+#include <epan/etypes.h>
+
+/* MAAP starts after common 1722 header */
+#define MAAP_START_OFFSET 1
+
+/* MAAP Field Offsets */
+#define MAAP_MSG_TYPE_OFFSET 0+MAAP_START_OFFSET
+#define MAAP_VERSION_OFFSET 1+MAAP_START_OFFSET
+#define MAAP_STREAM_ID_OFFSET 3+MAAP_START_OFFSET
+#define MAAP_REQ_START_ADDR_OFFSET 11+MAAP_START_OFFSET
+#define MAAP_REQ_COUNT_OFFSET 17+MAAP_START_OFFSET
+#define MAAP_CONFLICT_START_ADDR_OFFSET 19+MAAP_START_OFFSET
+#define MAAP_CONFLICT_COUNT_OFFSET 25+MAAP_START_OFFSET
+
+/* Bit Field Masks */
+#define MAAP_MSG_TYPE_MASK 0x0f
+#define MAAP_VERSION_MASK 0xf8
+#define MAAP_DATA_LEN_MASK 0x07ff
+
+/* MAAP message_type */
+#define MAAP_MSG_TYPE_RESERVED_0 0x00
+#define MAAP_MSG_TYPE_PROBE 0x01
+#define MAAP_MSG_TYPE_DEFEND 0x02
+#define MAAP_MSG_TYPE_ANNOUNCE 0x03
+#define MAAP_MSG_TYPE_RESERVED_4 0x04
+#define MAAP_MSG_TYPE_RESERVED_5 0x05
+
+static const value_string maap_msg_type_vals [] = {
+ {MAAP_MSG_TYPE_PROBE, "MAAP_PROBE"},
+ {MAAP_MSG_TYPE_DEFEND, "MAAP_DEFEND"},
+ {MAAP_MSG_TYPE_ANNOUNCE, "MAAP_ANNOUNCE"},
+ {0, NULL}
+};
+
+/**********************************************************/
+/* Initialize the protocol and registered fields */
+/**********************************************************/
+static int proto_maap = -1;
+
+/* MAAP PDU */
+static int hf_maap_message_type = -1;
+static int hf_maap_version = -1;
+static int hf_maap_data_length = -1;
+static int hf_maap_stream_id = -1;
+static int hf_maap_req_start_addr = -1;
+static int hf_maap_req_count = -1;
+static int hf_maap_conflict_start_addr = -1;
+static int hf_maap_conflict_count = -1;
+
+/* Initialize the subtree pointers */
+static int ett_maap = -1;
+
+static void
+dissect_maap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ guint8 maap_msg_type = 0;
+ proto_item *maap_item = NULL;
+ proto_tree *maap_tree = NULL;
+
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "MAAP");
+
+ /* The maap msg type will be handy in a moment */
+ maap_msg_type = tvb_get_guint8(tvb, MAAP_MSG_TYPE_OFFSET);
+ maap_msg_type &= 0x0f;
+
+ col_clear(pinfo->cinfo,COL_INFO);
+ /* Display the name of the packet type in the info column. */
+ col_add_fstr(pinfo->cinfo, COL_INFO, "%s:",
+ val_to_str(maap_msg_type, maap_msg_type_vals,
+ "Unknown Type(0x%02x)"));
+
+ /* Now, we'll add the start and conflict addresses and counts to the info column as appropriate */
+ switch (maap_msg_type)
+ {
+ case MAAP_MSG_TYPE_PROBE:
+ case MAAP_MSG_TYPE_ANNOUNCE:
+ col_append_fstr(pinfo->cinfo, COL_INFO, " req_start=%s, cnt=%d",
+ tvb_ether_to_str(tvb, MAAP_REQ_START_ADDR_OFFSET),
+ tvb_get_ntohs(tvb, MAAP_REQ_COUNT_OFFSET));
+
+ break;
+ case MAAP_MSG_TYPE_DEFEND:
+ col_append_fstr(pinfo->cinfo, COL_INFO, " conflict_start=%s, cnt=%d",
+ tvb_ether_to_str(tvb, MAAP_CONFLICT_START_ADDR_OFFSET),
+ tvb_get_ntohs(tvb, MAAP_CONFLICT_COUNT_OFFSET));
+ break;
+ default:
+ /* no info for reserved or unknown msg types */
+ break;
+ }
+
+
+ if (tree) {
+ maap_item = proto_tree_add_item(tree, proto_maap, tvb, MAAP_START_OFFSET, -1, ENC_NA);
+ maap_tree = proto_item_add_subtree(maap_item, ett_maap);
+
+ proto_tree_add_item(maap_tree, hf_maap_message_type, tvb, MAAP_MSG_TYPE_OFFSET, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(maap_tree, hf_maap_version, tvb, MAAP_VERSION_OFFSET, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(maap_tree, hf_maap_data_length, tvb, MAAP_VERSION_OFFSET, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(maap_tree, hf_maap_stream_id, tvb, MAAP_STREAM_ID_OFFSET, 8, ENC_BIG_ENDIAN);
+ proto_tree_add_item(maap_tree, hf_maap_req_start_addr, tvb, MAAP_REQ_START_ADDR_OFFSET, 6, ENC_NA);
+ proto_tree_add_item(maap_tree, hf_maap_req_count, tvb, MAAP_REQ_COUNT_OFFSET, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(maap_tree, hf_maap_conflict_start_addr, tvb, MAAP_CONFLICT_START_ADDR_OFFSET, 6, ENC_NA);
+ proto_tree_add_item(maap_tree, hf_maap_conflict_count, tvb, MAAP_CONFLICT_COUNT_OFFSET, 2, ENC_BIG_ENDIAN);
+ }
+} /* end dissect_maap() */
+
+/* Register the protocol with Wireshark */
+void
+proto_register_maap(void)
+{
+ static hf_register_info hf[] = {
+ { &hf_maap_message_type,
+ { "Message Type", "maap.message_type",
+ FT_UINT8, BASE_HEX,
+ VALS(maap_msg_type_vals), MAAP_MSG_TYPE_MASK,
+ NULL, HFILL }},
+
+ { &hf_maap_version,
+ { "MAAP Version", "maap.version",
+ FT_UINT8, BASE_HEX,
+ NULL, MAAP_VERSION_MASK,
+ NULL, HFILL }},
+
+ { &hf_maap_data_length,
+ { "Data Length", "maap.data_length",
+ FT_UINT16, BASE_HEX,
+ NULL, MAAP_DATA_LEN_MASK,
+ NULL, HFILL }},
+
+ { &hf_maap_stream_id,
+ { "Stream ID", "maap.stream_id",
+ FT_UINT64, BASE_HEX,
+ NULL, 0x00,
+ NULL, HFILL }},
+
+ { &hf_maap_req_start_addr,
+ { "Requested Start Address", "maap.req_start_addr",
+ FT_ETHER, BASE_NONE,
+ NULL, 0x00,
+ NULL, HFILL }},
+
+ { &hf_maap_req_count,
+ { "Request Count", "maap.req_count",
+ FT_UINT16, BASE_HEX,
+ NULL, 0x00,
+ NULL, HFILL }},
+
+ { &hf_maap_conflict_start_addr,
+ { "Conflict Start Address", "maap.conflict_start_addr",
+ FT_ETHER, BASE_NONE,
+ NULL, 0x00,
+ NULL, HFILL }},
+
+ { &hf_maap_conflict_count,
+ { "Conflict Count", "maap.conflict_count",
+ FT_UINT16, BASE_HEX,
+ NULL, 0x00,
+ NULL, HFILL }}
+ }; /* end of static hf_register_info hf[] = */
+
+ /* Setup protocol subtree array */
+ static gint *ett[] = { &ett_maap };
+
+ /* Register the protocol name and description */
+ if (-1 == proto_maap)
+ {
+ proto_maap = proto_register_protocol (
+ "IEEE 1722 MAAP Protocol", /* name */
+ "MAAP", /* short name */
+ "maap" /* abbrev */
+ );
+ }
+
+ /* Required function calls to register the header fields and subtrees used */
+ proto_register_field_array(proto_maap, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+
+} /* end proto_register_maap() */
+
+void
+proto_reg_handoff_maap(void)
+{
+ dissector_handle_t maap_handle;
+
+ maap_handle = create_dissector_handle(dissect_maap, proto_maap);
+ dissector_add_uint("ieee1722.subtype", 0x7E, maap_handle);
+}
git.samba.org / metze / wireshark / wip.git / commitdiff