diff options
Diffstat (limited to 'plugins/epan/wimax/msg_dsa.c')
| -rw-r--r-- | plugins/epan/wimax/msg_dsa.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/plugins/epan/wimax/msg_dsa.c b/plugins/epan/wimax/msg_dsa.c new file mode 100644 index 0000000..72280ba --- /dev/null +++ b/plugins/epan/wimax/msg_dsa.c @@ -0,0 +1,184 @@ +/* msg_dsa.c + * WiMax MAC Management DSA-REQ/RSP/ACK Messages decoder + * + * Copyright (c) 2007 by Intel Corporation. + * + * Author: Lu Pan <lu.pan@intel.com> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1999 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +/* Include files */ + +#include "config.h" + +/* +#define DEBUG +*/ + +#include <epan/packet.h> +#include "wimax_mac.h" +#include "wimax_utils.h" + +void proto_register_mac_mgmt_msg_dsa(void); +void proto_reg_handoff_mac_mgmt_msg_dsa(void); + +static dissector_handle_t dsa_req_handle; +static dissector_handle_t dsa_rsp_handle; +static dissector_handle_t dsa_ack_handle; + +static gint proto_mac_mgmt_msg_dsa_decoder = -1; +static gint ett_mac_mgmt_msg_dsa_req_decoder = -1; +static gint ett_mac_mgmt_msg_dsa_rsp_decoder = -1; +static gint ett_mac_mgmt_msg_dsa_ack_decoder = -1; + +/* fix fields */ +static gint hf_dsa_transaction_id = -1; +static gint hf_dsa_confirmation_code = -1; + +static int dissect_mac_mgmt_msg_dsa_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + guint offset = 0; + proto_item *dsa_item; + proto_tree *dsa_tree; + + { /* we are being asked for details */ + + /* display MAC message type */ + dsa_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsa_decoder, tvb, offset, -1, + "Dynamic Service Addition Request (DSA-REQ)"); + /* add MAC DSx subtree */ + dsa_tree = proto_item_add_subtree(dsa_item, ett_mac_mgmt_msg_dsa_req_decoder); + /* Decode and display the Uplink Channel Descriptor (UCD) */ + /* display the Transaction ID */ + proto_tree_add_item(dsa_tree, hf_dsa_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN); + /* move to next field */ + offset += 2; + /* process DSA-REQ message TLV Encode Information */ + wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsa_tree); + } + return tvb_captured_length(tvb); +} + +static int dissect_mac_mgmt_msg_dsa_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + guint offset = 0; + proto_item *dsa_item; + proto_tree *dsa_tree; + + { /* we are being asked for details */ + /* display MAC message type */ + dsa_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsa_decoder, tvb, offset, -1, + "Dynamic Service Addition Response (DSA-RSP)"); + /* add MAC DSx subtree */ + dsa_tree = proto_item_add_subtree(dsa_item, ett_mac_mgmt_msg_dsa_rsp_decoder); + /* Decode and display the Uplink Channel Descriptor (UCD) */ + /* display the Transaction ID */ + proto_tree_add_item(dsa_tree, hf_dsa_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN); + /* move to next field */ + offset += 2; + /* display the Confirmation Code */ + proto_tree_add_item(dsa_tree, hf_dsa_confirmation_code, tvb, offset, 1, ENC_BIG_ENDIAN); + /* move to next field */ + offset++; + /* process DSA RSP message TLV Encode Information */ + wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsa_tree); + } + return tvb_captured_length(tvb); +} + +static int dissect_mac_mgmt_msg_dsa_ack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + guint offset = 0; + proto_item *dsa_item; + proto_tree *dsa_tree; + + { /* we are being asked for details */ + /* display MAC message type */ + dsa_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsa_decoder, tvb, offset, -1, + "Dynamic Service Addition Acknowledge (DSA-ACK)"); + /* add MAC DSx subtree */ + dsa_tree = proto_item_add_subtree(dsa_item, ett_mac_mgmt_msg_dsa_ack_decoder); + /* Decode and display the Uplink Channel Descriptor (UCD) */ + /* display the Transaction ID */ + proto_tree_add_item(dsa_tree, hf_dsa_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN); + /* move to next field */ + offset += 2; + /* display the Confirmation Code */ + proto_tree_add_item(dsa_tree, hf_dsa_confirmation_code, tvb, offset, 1, ENC_BIG_ENDIAN); + /* move to next field */ + offset++; + /* process DSA-REQ message TLV Encode Information */ + wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsa_tree); + } + return tvb_captured_length(tvb); +} + +/* Register Wimax Mac Payload Protocol and Dissector */ +void proto_register_mac_mgmt_msg_dsa(void) +{ + /* DSx display */ + static hf_register_info hf[] = + { + { + &hf_dsa_confirmation_code, + { + "Confirmation code", "wmx.dsa.confirmation_code", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL + } + }, + { + &hf_dsa_transaction_id, + { + "Transaction ID", "wmx.dsa.transaction_id", + FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL + } + } + }; + + /* Setup protocol subtree array */ + static gint *ett[] = + { + &ett_mac_mgmt_msg_dsa_req_decoder, + &ett_mac_mgmt_msg_dsa_rsp_decoder, + &ett_mac_mgmt_msg_dsa_ack_decoder, + }; + + proto_mac_mgmt_msg_dsa_decoder = proto_register_protocol ( + "WiMax DSA Messages", /* name */ + "WiMax DSA", /* short name */ + "wmx.dsa" /* abbrev */ + ); + + proto_register_field_array(proto_mac_mgmt_msg_dsa_decoder, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + dsa_req_handle = register_dissector("mac_mgmt_msg_dsa_req_handler", dissect_mac_mgmt_msg_dsa_req_decoder, proto_mac_mgmt_msg_dsa_decoder); + dsa_rsp_handle = register_dissector("mac_mgmt_msg_dsa_rsp_handler", dissect_mac_mgmt_msg_dsa_rsp_decoder, proto_mac_mgmt_msg_dsa_decoder); + dsa_ack_handle = register_dissector("mac_mgmt_msg_dsa_ack_handler", dissect_mac_mgmt_msg_dsa_ack_decoder, proto_mac_mgmt_msg_dsa_decoder); +} + +void +proto_reg_handoff_mac_mgmt_msg_dsa (void) +{ + dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSA_REQ, dsa_req_handle); + dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSA_RSP, dsa_rsp_handle); + dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSA_ACK, dsa_ack_handle); +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 8 + * tab-width: 8 + * indent-tabs-mode: t + * End: + * + * vi: set shiftwidth=8 tabstop=8 noexpandtab: + * :indentSize=8:tabSize=8:noTabs=false: + */ |