662 lines
28 KiB
C
662 lines
28 KiB
C
/* packet-wifi-display.c
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*
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* Wi-Fi Display
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*
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* Copyright 2011-2013 Qualcomm Atheros, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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# include "config.h"
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#include <epan/packet.h>
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#include <epan/to_str.h>
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#include <epan/expert.h>
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#include "packet-ieee80211.h"
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void proto_register_wifi_display(void);
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void proto_reg_handoff_wifi_display(void);
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static int proto_wifi_display = -1;
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static int hf_wfd_subelem_id = -1;
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static int hf_wfd_subelem_len = -1;
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static int hf_wfd_subelem_dev_info_type = -1;
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static int hf_wfd_subelem_dev_info_coupled_sink_source = -1;
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static int hf_wfd_subelem_dev_info_coupled_sink_sink = -1;
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static int hf_wfd_subelem_dev_info_available = -1;
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static int hf_wfd_subelem_dev_info_wsd = -1;
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static int hf_wfd_subelem_dev_info_pc = -1;
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static int hf_wfd_subelem_dev_info_content_protection = -1;
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static int hf_wfd_subelem_dev_info_time_sync = -1;
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static int hf_wfd_subelem_dev_info_control_port = -1;
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static int hf_wfd_subelem_dev_info_max_throughput = -1;
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static int hf_wfd_subelem_dev_info_audio_unsupp_pri_sink = -1;
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static int hf_wfd_subelem_dev_info_audio_only_supp_source = -1;
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static int hf_wfd_subelem_dev_info_tdls_persistent_group = -1;
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static int hf_wfd_subelem_dev_info_tdls_persistent_group_reinvoke = -1;
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static int hf_wfd_subelem_dev_info_reserved = -1;
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static int hf_wfd_subelem_assoc_bssid = -1;
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static int hf_wfd_subelem_coupled_sink_status_bitmap = -1;
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static int hf_wfd_subelem_coupled_sink_reserved = -1;
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static int hf_wfd_subelem_coupled_sink_mac_addr = -1;
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static int hf_wfd_subelem_session_descr_len = -1;
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static int hf_wfd_subelem_session_dev_addr = -1;
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static int hf_wfd_subelem_session_assoc_bssid = -1;
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static int hf_wfd_subelem_session_dev_info_type = -1;
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static int hf_wfd_subelem_session_dev_info_coupled_sink_source = -1;
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static int hf_wfd_subelem_session_dev_info_coupled_sink_sink = -1;
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static int hf_wfd_subelem_session_dev_info_available = -1;
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static int hf_wfd_subelem_session_dev_info_wsd = -1;
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static int hf_wfd_subelem_session_dev_info_pc = -1;
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static int hf_wfd_subelem_session_dev_info_content_protection = -1;
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static int hf_wfd_subelem_session_dev_info_time_sync = -1;
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static int hf_wfd_subelem_session_dev_info_audio_unsupp_pri_sink = -1;
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static int hf_wfd_subelem_session_dev_info_audio_only_supp_source = -1;
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static int hf_wfd_subelem_session_dev_info_tdls_persistent_group = -1;
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static int hf_wfd_subelem_session_dev_info_tdls_persistent_group_reinvoke = -1;
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static int hf_wfd_subelem_session_dev_info_reserved = -1;
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static int hf_wfd_subelem_session_dev_info_max_throughput = -1;
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static int hf_wfd_subelem_session_coupled_sink_status_bitmap = -1;
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static int hf_wfd_subelem_session_coupled_sink_reserved = -1;
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static int hf_wfd_subelem_session_coupled_sink_addr = -1;
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static int hf_wfd_subelem_session_extra_info = -1;
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static int hf_wfd_subelem_ext_capab = -1;
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static int hf_wfd_subelem_ext_capab_uibc = -1;
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static int hf_wfd_subelem_ext_capab_i2c_read_write = -1;
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static int hf_wfd_subelem_ext_capab_preferred_display_mode = -1;
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static int hf_wfd_subelem_ext_capab_standby_resume_control = -1;
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static int hf_wfd_subelem_ext_capab_tdls_persistent = -1;
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static int hf_wfd_subelem_ext_capab_tdls_persistent_bssid = -1;
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static int hf_wfd_subelem_ext_capab_reserved = -1;
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static int hf_wfd_subelem_alt_mac_addr = -1;
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static gint ett_wfd_subelem = -1;
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static gint ett_wfd_dev_info_descr = -1;
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static expert_field ei_wfd_subelem_len_invalid = EI_INIT;
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static expert_field ei_wfd_subelem_session_descr_invalid = EI_INIT;
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static expert_field ei_wfd_subelem_id = EI_INIT;
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static dissector_handle_t wifi_display_ie_handle;
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enum wifi_display_subelem {
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WFD_SUBELEM_DEVICE_INFO = 0,
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WFD_SUBELEM_ASSOCIATED_BSSID = 1,
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WFD_SUBELEM_AUDIO_FORMATS = 2,
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WFD_SUBELEM_VIDEO_FORMATS = 3,
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WFD_SUBELEM_3D_VIDEO_FORMATS = 4,
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WFD_SUBELEM_CONTENT_PROTECTION = 5,
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WFD_SUBELEM_COUPLED_SINK = 6,
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WFD_SUBELEM_EXT_CAPAB = 7,
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WFD_SUBELEM_LOCAL_IP_ADDRESS = 8,
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WFD_SUBELEM_SESSION_INFO = 9,
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WFD_SUBELEM_ALT_MAC_ADDR = 10
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};
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static const value_string wfd_subelem_ids[] = {
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{ WFD_SUBELEM_DEVICE_INFO, "WFD Device Information" },
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{ WFD_SUBELEM_ASSOCIATED_BSSID, "Associated BSSID" },
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{ WFD_SUBELEM_AUDIO_FORMATS, "WFD Audio Formats" },
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{ WFD_SUBELEM_VIDEO_FORMATS, "WFD Video Formats" },
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{ WFD_SUBELEM_3D_VIDEO_FORMATS, "WFD 3D Video Formats" },
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{ WFD_SUBELEM_CONTENT_PROTECTION, "WFD Content Protection" },
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{ WFD_SUBELEM_COUPLED_SINK, "Coupled Sink Information" },
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{ WFD_SUBELEM_EXT_CAPAB, "WFD Extended Capability" },
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{ WFD_SUBELEM_LOCAL_IP_ADDRESS, "Local IP Address" },
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{ WFD_SUBELEM_SESSION_INFO, "WFD Session Information" },
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{ WFD_SUBELEM_ALT_MAC_ADDR, "Alternative MAC Address" },
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{ 0, NULL }
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};
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static const value_string wfd_dev_info_types[] = {
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{ 0, "WFD source" },
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{ 1, "WFD primary sink" },
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{ 2, "WFD secondary sink" },
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{ 3, "WFD source/primary sink" },
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{ 0, NULL }
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};
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static const value_string wfd_dev_info_avail[] = {
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{ 0, "Not available for WFD Session" },
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{ 1, "Available for WFD Session" },
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{ 0, NULL }
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};
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static const value_string wfd_dev_info_pc[] = {
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{ 0, "P2P" },
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{ 1, "TDLS" },
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{ 0, NULL }
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};
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static const value_string wfd_coupled_sink_status_bitmap[] = {
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{ 0, "Not coupled/Available for Coupling" },
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{ 1, "Coupled" },
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{ 2, "Teardown Coupling" },
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{ 3, "Reserved" },
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{ 0, NULL }
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};
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static void
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dissect_wfd_subelem_device_info(proto_tree *tree, tvbuff_t *tvb, int offset)
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{
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_type,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_coupled_sink_source,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_coupled_sink_sink,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_available,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_wsd,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_pc,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_content_protection,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_time_sync,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_audio_unsupp_pri_sink,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_audio_only_supp_source,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_tdls_persistent_group,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree,
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hf_wfd_subelem_dev_info_tdls_persistent_group_reinvoke,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_reserved,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_control_port,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(tree, hf_wfd_subelem_dev_info_max_throughput,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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}
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static void
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dissect_wfd_subelem_associated_bssid(packet_info *pinfo, proto_tree *tree,
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tvbuff_t *tvb, int offset, int len)
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{
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if (len < 6) {
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expert_add_info_format(pinfo, tree, &ei_wfd_subelem_len_invalid, "Too short Wi-Fi Display Associated BSSID");
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return;
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}
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proto_tree_add_item(tree, hf_wfd_subelem_assoc_bssid, tvb, offset, 6, ENC_NA);
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}
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static void
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dissect_wfd_subelem_coupled_sink(packet_info *pinfo, proto_tree *tree,
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tvbuff_t *tvb, int offset, int len)
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{
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if (len < 1) {
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expert_add_info_format(pinfo, tree, &ei_wfd_subelem_len_invalid, "Too short Wi-Fi Display Coupled Sink");
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return;
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}
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proto_tree_add_item(tree, hf_wfd_subelem_coupled_sink_status_bitmap,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_coupled_sink_reserved,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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if (len < 1 + 6) {
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expert_add_info_format(pinfo, tree, &ei_wfd_subelem_len_invalid, "Too short Wi-Fi Display Coupled Sink");
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return;
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}
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proto_tree_add_item(tree, hf_wfd_subelem_coupled_sink_mac_addr, tvb,
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offset + 1, 6, ENC_NA);
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}
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static void
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dissect_wfd_subelem_session_info(packet_info *pinfo, proto_tree *tree,
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tvbuff_t *tvb, int offset, guint16 len)
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{
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int end = offset + len, next;
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proto_item *item;
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proto_tree *descr;
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while (offset < end) {
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guint8 dlen = tvb_get_guint8(tvb, offset);
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next = offset + 1 + dlen;
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descr = proto_tree_add_subtree(tree, tvb, offset, 1 + dlen,
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ett_wfd_dev_info_descr, &item, "WFD Device Info Descriptor");
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if (offset + 1 + dlen > end || dlen < 23) {
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expert_add_info(pinfo, item, &ei_wfd_subelem_session_descr_invalid);
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break;
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}
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proto_tree_add_item(descr, hf_wfd_subelem_session_descr_len,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(descr, hf_wfd_subelem_session_dev_addr, tvb, offset, 6,
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ENC_NA);
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proto_item_append_text(descr, ": %s", tvb_ether_to_str(tvb, offset));
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offset += 6;
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proto_tree_add_item(descr, hf_wfd_subelem_session_assoc_bssid,
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tvb, offset, 6, ENC_NA);
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offset += 6;
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proto_tree_add_item(descr, hf_wfd_subelem_session_dev_info_type,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(descr,
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hf_wfd_subelem_session_dev_info_coupled_sink_source,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(descr,
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hf_wfd_subelem_session_dev_info_coupled_sink_sink,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(descr, hf_wfd_subelem_session_dev_info_available,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(descr, hf_wfd_subelem_session_dev_info_wsd,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(descr, hf_wfd_subelem_session_dev_info_pc,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(descr,
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hf_wfd_subelem_session_dev_info_content_protection,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(descr, hf_wfd_subelem_session_dev_info_time_sync,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree,
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hf_wfd_subelem_session_dev_info_audio_unsupp_pri_sink,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree,
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hf_wfd_subelem_session_dev_info_audio_only_supp_source,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree,
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hf_wfd_subelem_session_dev_info_tdls_persistent_group,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree,
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hf_wfd_subelem_session_dev_info_tdls_persistent_group_reinvoke,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree,
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hf_wfd_subelem_session_dev_info_reserved,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(descr, hf_wfd_subelem_session_dev_info_max_throughput,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(descr,
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hf_wfd_subelem_session_coupled_sink_status_bitmap,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(descr,
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hf_wfd_subelem_session_coupled_sink_reserved,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(descr, hf_wfd_subelem_session_coupled_sink_addr,
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tvb, offset, 6, ENC_NA);
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offset += 6;
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if (offset < next) {
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proto_tree_add_item(descr, hf_wfd_subelem_session_extra_info, tvb, offset, next - offset, ENC_NA);
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}
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offset = next;
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}
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}
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static void
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dissect_wfd_subelem_ext_capab(packet_info *pinfo, proto_tree *tree,
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tvbuff_t *tvb, int offset, int len)
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{
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if (len<2) {
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expert_add_info_format(pinfo, tree, &ei_wfd_subelem_len_invalid,
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"Too short Wi-Fi Display Extended Capability");
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return;
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}
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proto_tree_add_item(tree, hf_wfd_subelem_ext_capab,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_ext_capab_uibc,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_ext_capab_i2c_read_write,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_ext_capab_preferred_display_mode,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_ext_capab_standby_resume_control,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_ext_capab_tdls_persistent,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_ext_capab_tdls_persistent_bssid,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_wfd_subelem_ext_capab_reserved,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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}
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static void
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dissect_wfd_subelem_alt_mac_addr(packet_info *pinfo, proto_tree *tree,
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tvbuff_t *tvb, int offset, int len)
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{
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if (len<6) {
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expert_add_info_format(pinfo, tree, &ei_wfd_subelem_len_invalid,
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"Too short Wi-Fi Display Alternative MAC Address");
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return;
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}
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proto_tree_add_item(tree, hf_wfd_subelem_alt_mac_addr,
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tvb, offset, 6, ENC_NA);
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}
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static int
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dissect_wifi_display_ie(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void *data _U_)
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{
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int end = tvb_reported_length(tvb);
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int offset = 0;
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guint8 id;
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guint16 len;
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proto_tree *wfd_tree;
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proto_item *subelem;
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while (offset < end) {
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if (end - offset < 2) {
|
|
expert_add_info_format(pinfo, tree, &ei_wfd_subelem_len_invalid, "Packet too short for Wi-Fi Display subelement");
|
|
break;
|
|
}
|
|
|
|
id = tvb_get_guint8(tvb, offset);
|
|
len = tvb_get_ntohs(tvb, offset + 1);
|
|
wfd_tree = proto_tree_add_subtree(tree, tvb, offset, 3 + len,
|
|
ett_wfd_subelem, &subelem,
|
|
val_to_str(id, wfd_subelem_ids,
|
|
"Unknown subelement ID (%u)"));
|
|
if (offset + 3 + len > end) {
|
|
expert_add_info_format(pinfo, subelem, &ei_wfd_subelem_len_invalid, "Packet too short for Wi-Fi Display subelement payload");
|
|
}
|
|
|
|
proto_tree_add_item(wfd_tree, hf_wfd_subelem_id, tvb, offset, 1,
|
|
ENC_BIG_ENDIAN);
|
|
offset++;
|
|
proto_tree_add_item(wfd_tree, hf_wfd_subelem_len, tvb, offset, 2,
|
|
ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
switch (id) {
|
|
case WFD_SUBELEM_DEVICE_INFO:
|
|
dissect_wfd_subelem_device_info(wfd_tree, tvb, offset);
|
|
break;
|
|
case WFD_SUBELEM_ASSOCIATED_BSSID:
|
|
dissect_wfd_subelem_associated_bssid(pinfo, wfd_tree, tvb, offset, len);
|
|
break;
|
|
case WFD_SUBELEM_COUPLED_SINK:
|
|
dissect_wfd_subelem_coupled_sink(pinfo, wfd_tree, tvb, offset, len);
|
|
break;
|
|
case WFD_SUBELEM_SESSION_INFO:
|
|
dissect_wfd_subelem_session_info(pinfo, wfd_tree, tvb, offset, len);
|
|
break;
|
|
case WFD_SUBELEM_EXT_CAPAB:
|
|
dissect_wfd_subelem_ext_capab(pinfo, wfd_tree, tvb, offset, len);
|
|
break;
|
|
case WFD_SUBELEM_ALT_MAC_ADDR:
|
|
dissect_wfd_subelem_alt_mac_addr(pinfo, wfd_tree, tvb, offset, len);
|
|
break;
|
|
default:
|
|
expert_add_info(pinfo, subelem, &ei_wfd_subelem_id);
|
|
break;
|
|
}
|
|
|
|
offset += len;
|
|
}
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_wifi_display(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_wfd_subelem_id,
|
|
{ "Subelement ID", "wifi_display.subelem.id",
|
|
FT_UINT8, BASE_DEC, VALS(wfd_subelem_ids), 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_len,
|
|
{ "Length", "wifi_display.subelem.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_type,
|
|
{ "Device type", "wifi_display.subelem.dev_info.type",
|
|
FT_UINT16, BASE_DEC, VALS(wfd_dev_info_types), 0x0003, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_coupled_sink_source,
|
|
{ "Coupled sink operation supported by WFD source",
|
|
"wifi_display.subelem.dev_info.coupled_sink_by_source",
|
|
FT_BOOLEAN, 16, NULL, 0x0004, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_coupled_sink_sink,
|
|
{ "Coupled sink operation supported by WFD sink",
|
|
"wifi_display.subelem.dev_info.coupled_sink_by_sink",
|
|
FT_BOOLEAN, 16, NULL, 0x0008, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_available,
|
|
{ "Available for WFD Session", "wifi_display.subelem.dev_info.available",
|
|
FT_UINT16, BASE_DEC, VALS(wfd_dev_info_avail), 0x0030, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_wsd,
|
|
{ "WFD Service Discovery", "wifi_display.subelem.dev_info.wsd",
|
|
FT_BOOLEAN, 16, NULL, 0x0040, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_pc,
|
|
{ "Preferred Connectivity", "wifi_display.subelem.dev_info.pc",
|
|
FT_UINT16, BASE_DEC, VALS(wfd_dev_info_pc), 0x0080, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_content_protection,
|
|
{ "Content Protection using HDCP2.0",
|
|
"wifi_display.subelem.dev_info.content_protection",
|
|
FT_BOOLEAN, 16, NULL, 0x0100, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_time_sync,
|
|
{ "Time Synchronization using 802.1AS",
|
|
"wifi_display.subelem.dev_info.time_sync",
|
|
FT_BOOLEAN, 16, NULL, 0x0200, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_audio_unsupp_pri_sink,
|
|
{ "Audio un-supported at Primary sink",
|
|
"wifi_display.subelem.session.audio_unsupp_pri_sink",
|
|
FT_BOOLEAN, 16, NULL, 0x0400, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_audio_only_supp_source,
|
|
{ "Audio only support af WFD source",
|
|
"wifi_display.subelem.session.audio_only_supp_source",
|
|
FT_BOOLEAN, 16, NULL, 0x0800, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_tdls_persistent_group,
|
|
{ "TDLS Persistent Group",
|
|
"wifi_display.subelem.session.tdls_persistent_group",
|
|
FT_BOOLEAN, 16, NULL, 0x1000, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_tdls_persistent_group_reinvoke,
|
|
{ "TDLS Persistent Group Re-invoke",
|
|
"wifi_display.subelem.session.tdls_persistent_group_reinvoke",
|
|
FT_BOOLEAN, 16, NULL, 0x2000, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_reserved,
|
|
{ "Reserved", "wifi_display.subelem.session.reserved",
|
|
FT_UINT16, BASE_DEC, NULL, 0xc000, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_control_port,
|
|
{ "Session Management Control Port",
|
|
"wifi_display.subelem.dev_info.control_port",
|
|
FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_dev_info_max_throughput,
|
|
{ "WFD Device Maximum Throughput (Mbps)",
|
|
"wifi_display.subelem.dev_info.max_throughput",
|
|
FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_assoc_bssid,
|
|
{ "Associated BSSID", "wifi_display.subelem.assoc_bssid.bssid",
|
|
FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_coupled_sink_status_bitmap,
|
|
{ "Coupled Sink Status bitmap",
|
|
"wifi_display.subelem.coupled_sink.status",
|
|
FT_UINT8, BASE_DEC, VALS(wfd_coupled_sink_status_bitmap), 0x03,
|
|
NULL, HFILL }},
|
|
{ &hf_wfd_subelem_coupled_sink_reserved,
|
|
{ "Reserved", "wifi_display.subelem.coupled_sink.reserved",
|
|
FT_UINT8, BASE_DEC, NULL, 0xfc, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_coupled_sink_mac_addr,
|
|
{ "Coupled Sink MAC Address",
|
|
"wifi_display.subelem.coupled_sink.mac_addr",
|
|
FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_descr_len,
|
|
{ "Descriptor length",
|
|
"wifi_display.subelem.session.descr_len",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_addr,
|
|
{ "Device address",
|
|
"wifi_display.subelem.session.device_address",
|
|
FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_assoc_bssid,
|
|
{ "Associated BSSID",
|
|
"wifi_display.subelem.session.associated_bssid",
|
|
FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_type,
|
|
{ "Device type", "wifi_display.subelem.session.type",
|
|
FT_UINT16, BASE_DEC, VALS(wfd_dev_info_types), 0x0003, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_coupled_sink_source,
|
|
{ "Coupled sink operation supported by WFD source",
|
|
"wifi_display.subelem.session.coupled_sink_by_source",
|
|
FT_BOOLEAN, 16, NULL, 0x0004, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_coupled_sink_sink,
|
|
{ "Coupled sink operation supported by WFD sink",
|
|
"wifi_display.subelem.session.coupled_sink_by_sink",
|
|
FT_BOOLEAN, 16, NULL, 0x0008, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_available,
|
|
{ "Available for WFD Session", "wifi_display.subelem.session.available",
|
|
FT_UINT16, BASE_DEC, VALS(wfd_dev_info_avail), 0x0030, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_wsd,
|
|
{ "WFD Service Discovery", "wifi_display.subelem.session.wsd",
|
|
FT_BOOLEAN, 16, NULL, 0x0040, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_pc,
|
|
{ "Preferred Connectivity", "wifi_display.subelem.session.pc",
|
|
FT_UINT16, BASE_DEC, VALS(wfd_dev_info_pc), 0x0080, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_content_protection,
|
|
{ "Content Protection using HDCP2.0",
|
|
"wifi_display.subelem.session.content_protection",
|
|
FT_BOOLEAN, 16, NULL, 0x0100, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_time_sync,
|
|
{ "Time Synchronization using 802.1AS",
|
|
"wifi_display.subelem.session.time_sync",
|
|
FT_BOOLEAN, 16, NULL, 0x0200, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_audio_unsupp_pri_sink,
|
|
{ "Audio un-supported at Primary sink",
|
|
"wifi_display.subelem.session.audio_unsupp_pri_sink",
|
|
FT_BOOLEAN, 16, NULL, 0x0400, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_audio_only_supp_source,
|
|
{ "Audio only support af WFD source",
|
|
"wifi_display.subelem.session.audio_only_supp_source",
|
|
FT_BOOLEAN, 16, NULL, 0x0800, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_tdls_persistent_group,
|
|
{ "TDLS Persistent Group",
|
|
"wifi_display.subelem.session.tdls_persistent_group",
|
|
FT_BOOLEAN, 16, NULL, 0x1000, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_tdls_persistent_group_reinvoke,
|
|
{ "TDLS Persistent Group Re-invoke",
|
|
"wifi_display.subelem.session.tdls_persistent_group_reinvoke",
|
|
FT_BOOLEAN, 16, NULL, 0x2000, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_reserved,
|
|
{ "Reserved", "wifi_display.subelem.session.reserved",
|
|
FT_UINT16, BASE_DEC, NULL, 0xc000, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_dev_info_max_throughput,
|
|
{ "WFD Device Maximum Throughput (Mbps)",
|
|
"wifi_display.subelem.session.max_throughput",
|
|
FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_coupled_sink_status_bitmap,
|
|
{ "Coupled Sink Status bitmap",
|
|
"wifi_display.subelem.session.coupled_sink_status",
|
|
FT_UINT8, BASE_DEC, VALS(wfd_coupled_sink_status_bitmap), 0x03,
|
|
NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_coupled_sink_reserved,
|
|
{ "Reserved", "wifi_display.subelem.session.coupled_sink.reserved",
|
|
FT_UINT8, BASE_DEC, NULL, 0xfc, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_coupled_sink_addr,
|
|
{ "Coupled peer sink address",
|
|
"wifi_display.subelem.session.coupled_peer_sink_addr",
|
|
FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_session_extra_info,
|
|
{ "Extra info in the end of descriptor",
|
|
"wifi_display.subelem.session.extra_info",
|
|
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_ext_capab,
|
|
{ "WFD Extended Capability Bitmap",
|
|
"wifi_display.subelem.ext_capab",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_ext_capab_uibc,
|
|
{ "User Input Back Channel(UIBC)",
|
|
"wifi_display.subelem.ext_capab.uibc",
|
|
FT_BOOLEAN, 16, TFS (&tfs_supported_not_supported), 0x0001, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_ext_capab_i2c_read_write,
|
|
{ "I2C Read/Write",
|
|
"wifi_display.subelem.ext_capab.i2c_read_write",
|
|
FT_BOOLEAN, 16, TFS (&tfs_supported_not_supported), 0x0002, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_ext_capab_preferred_display_mode,
|
|
{ "Preferred Display Mode",
|
|
"wifi_display.subelem.ext_capab.preferred_display_mode",
|
|
FT_BOOLEAN, 16, TFS (&tfs_supported_not_supported), 0x0004, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_ext_capab_standby_resume_control,
|
|
{ "Standby and Resume Control",
|
|
"wifi_display.subelem.ext_capab.standby_resume_control",
|
|
FT_BOOLEAN, 16, TFS (&tfs_supported_not_supported), 0x008, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_ext_capab_tdls_persistent,
|
|
{ "TDLS Persistent",
|
|
"wifi_display.subelem.ext_capab.tdls_persistent",
|
|
FT_BOOLEAN, 16, TFS (&tfs_supported_not_supported), 0x0010, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_ext_capab_tdls_persistent_bssid,
|
|
{ "TDLS Persistent BSSID",
|
|
"wifi_display.subelem.ext_capab.tdls_persistent_bssid",
|
|
FT_BOOLEAN, 16, TFS (&tfs_supported_not_supported), 0x0020, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_ext_capab_reserved,
|
|
{ "Reserved", "wifi_display.subelem.ext_capab.reserved",
|
|
FT_UINT16, BASE_HEX, NULL, 0xffc0, NULL, HFILL }},
|
|
{ &hf_wfd_subelem_alt_mac_addr,
|
|
{ "Alternative MAC Address", "wifi_display.subelem.alt_mac_addr",
|
|
FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_wfd_subelem,
|
|
&ett_wfd_dev_info_descr
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_wfd_subelem_len_invalid, { "wifi_display.subelem.length.invalid", PI_MALFORMED, PI_ERROR, "Subelement length invalid", EXPFILL }},
|
|
{ &ei_wfd_subelem_session_descr_invalid, { "wifi_display.subelem.session.descr_invalid", PI_MALFORMED, PI_ERROR, "Invalid WFD Device Info Descriptor", EXPFILL }},
|
|
{ &ei_wfd_subelem_id, { "wifi_display.subelem.id.unknown", PI_PROTOCOL, PI_WARN, "Unknown subelement payload", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_wifi_display;
|
|
|
|
proto_wifi_display = proto_register_protocol("Wi-Fi Display", "WFD", "wifi_display");
|
|
proto_register_field_array(proto_wifi_display, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
expert_wifi_display = expert_register_protocol(proto_wifi_display);
|
|
expert_register_field_array(expert_wifi_display, ei, array_length(ei));
|
|
|
|
wifi_display_ie_handle = register_dissector("wifi_display_ie", dissect_wifi_display_ie, proto_wifi_display);
|
|
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_wifi_display(void)
|
|
{
|
|
dissector_add_uint("wlan.ie.wifi_alliance.subtype", WFA_SUBTYPE_WIFI_DISPLAY, wifi_display_ie_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|