plugins/epan/wimax/msg_prc_lt_ctrl.c

   1 /* msg_prc_lt_ctrl.c
   2  * WiMax MAC Management PRC-LT-CTRL Message decoders
   3  *
   4  * Copyright (c) 2007 by Intel Corporation.
   5  *
   6  * Author: John R. Underwood <junderx@yahoo.com>
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1999 Gerald Combs
  11  *
  12  * SPDX-License-Identifier: GPL-2.0-or-later
  13  */
  14
  15 /* Include files */
  16
  17 #include "config.h"
  18
  19 #include <epan/packet.h>
  20 #include "wimax_mac.h"
  21
  22
  23 void proto_register_mac_mgmt_msg_prc_lt_ctrl(void);
  24 void proto_reg_handoff_mac_mgmt_msg_prc_lt_ctrl(void);
  25
  26 static dissector_handle_t prc_handle;
  27
  28 static int proto_mac_mgmt_msg_prc_lt_ctrl_decoder;
  29
  30 static int ett_mac_mgmt_msg_prc_lt_ctrl_decoder;
  31
  32 /* PRC-LT-CTRL fields */
  33 static int hf_prc_lt_ctrl_precoding;
  34 static int hf_prc_lt_ctrl_precoding_delay;
  35 /* static int hf_prc_lt_ctrl_invalid_tlv; */
  36
  37 static const value_string vals_turn_on[] = {
  38         {0, "Turn off"},
  39         {1, "Turn on"},
  40         {0, NULL}
  41 };
  42
  43
  44 /* Decode PRC-LT-CTRL messages. */
  45 static int dissect_mac_mgmt_msg_prc_lt_ctrl_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
  46 {
  47         unsigned offset = 0;
  48         proto_item *prc_lt_ctrl_item;
  49         proto_tree *prc_lt_ctrl_tree;
  50
  51         {       /* we are being asked for details */
  52
  53                 /* display MAC payload type PRC-LT-CTRL */
  54                 prc_lt_ctrl_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_prc_lt_ctrl_decoder, tvb, 0, -1, "MAC Management Message, PRC-LT-CTRL");
  55
  56                 /* add MAC PRC-LT-CTRL subtree */
  57                 prc_lt_ctrl_tree = proto_item_add_subtree(prc_lt_ctrl_item, ett_mac_mgmt_msg_prc_lt_ctrl_decoder);
  58
  59                 /* display whether to Setup or Tear-down the
  60                  * long-term MIMO precoding delay */
  61                 proto_tree_add_item(prc_lt_ctrl_tree, hf_prc_lt_ctrl_precoding, tvb, offset, 1, ENC_BIG_ENDIAN);
  62
  63                 /* display the Precoding Delay */
  64                 proto_tree_add_item(prc_lt_ctrl_tree, hf_prc_lt_ctrl_precoding_delay, tvb, offset, 1, ENC_BIG_ENDIAN);
  65         }
  66         return tvb_captured_length(tvb);
  67 }
  68
  69 /* Register Wimax Mac Payload Protocol and Dissector */
  70 void proto_register_mac_mgmt_msg_prc_lt_ctrl(void)
  71 {
  72         /* PRC-LT-CTRL fields display */
  73         static hf_register_info hf[] =
  74         {
  75 #if 0
  76                 {
  77                         &hf_prc_lt_ctrl_invalid_tlv,
  78                         {
  79                                 "Invalid TLV", "wmx.prc_lt_ctrl.invalid_tlv",
  80                                 FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL
  81                         }
  82                 },
  83 #endif
  84                 {
  85                         &hf_prc_lt_ctrl_precoding,
  86                         {
  87                                 "Setup/Tear-down long-term precoding with feedback",
  88                                 "wmx.prc_lt_ctrl.precoding",
  89                                 FT_UINT8, BASE_DEC, VALS(vals_turn_on), 0x80, NULL, HFILL
  90                         }
  91                 },
  92                 {
  93                         &hf_prc_lt_ctrl_precoding_delay,
  94                         {
  95                                 "BS precoding application delay",
  96                                 "wmx.prc_lt_ctrl.precoding_delay",
  97                                 FT_UINT8, BASE_DEC, NULL, 0x60, NULL, HFILL
  98                         }
  99                 }
 100         };
 101
 102         /* Setup protocol subtree array */
 103         static int *ett[] =
 104                 {
 105                         &ett_mac_mgmt_msg_prc_lt_ctrl_decoder,
 106                 };
 107
 108         proto_mac_mgmt_msg_prc_lt_ctrl_decoder = proto_register_protocol (
 109                 "WiMax PRC-LT-CTRL Message", /* name       */
 110                 "WiMax PRC-LT-CTRL (prc)",   /* short name */
 111                 "wmx.prc_lt_ctrl"            /* abbrev     */
 112                 );
 113
 114         proto_register_field_array(proto_mac_mgmt_msg_prc_lt_ctrl_decoder, hf, array_length(hf));
 115         proto_register_subtree_array(ett, array_length(ett));
 116         prc_handle = register_dissector("mac_mgmt_msg_prc_lt_ctrl_handler", dissect_mac_mgmt_msg_prc_lt_ctrl_decoder, proto_mac_mgmt_msg_prc_lt_ctrl_decoder);
 117 }
 118
 119 void
 120 proto_reg_handoff_mac_mgmt_msg_prc_lt_ctrl(void)
 121 {
 122         dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_PRC_LT_CTRL, prc_handle);
 123 }
 124
 125 /*
 126  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 127  *
 128  * Local variables:
 129  * c-basic-offset: 8
 130  * tab-width: 8
 131  * indent-tabs-mode: t
 132  * End:
 133  *
 134  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 135  * :indentSize=8:tabSize=8:noTabs=false:
 136  */