/* packet-capwap.c
 * Routines for CAPWAP dissection (RFC 5415 / RFC5416)
 * Copyright 2009,  Alexis La Goutte <alexis.lagoutte at gmail 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include "config.h"

#include <glib.h>

#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/reassemble.h>
#include <epan/expert.h>

#include <epan/sminmpec.h>

#define UDP_PORT_CAPWAP_CONTROL 5246
#define UDP_PORT_CAPWAP_DATA 5247

static guint global_capwap_control_udp_port = UDP_PORT_CAPWAP_CONTROL;
static guint global_capwap_data_udp_port = UDP_PORT_CAPWAP_DATA;
static gboolean global_capwap_draft_8_cisco = FALSE;
static gboolean global_capwap_reassemble = TRUE;
static gboolean global_capwap_swap_frame_control = TRUE;

static reassembly_table capwap_reassembly_table;

/* TODO LIST !
* add decryption of DLTS Message
* add support of all Messages Element Type
*/

/* Forward declaration we need below */
void proto_reg_handoff_capwap(void);

/* Initialize the protocol and registered fields */
static int proto_capwap = -1;

static int hf_capwap_preamble = -1;
static int hf_capwap_preamble_version = -1;
static int hf_capwap_preamble_type = -1;
static int hf_capwap_preamble_reserved = -1;

static int hf_capwap_header = -1;
static int hf_capwap_header_hlen = -1;
static int hf_capwap_header_rid = -1;
static int hf_capwap_header_wbid = -1;

static int hf_capwap_header_flags = -1;
static int hf_capwap_header_flags_t = -1;
static int hf_capwap_header_flags_f = -1;
static int hf_capwap_header_flags_l = -1;
static int hf_capwap_header_flags_w = -1;
static int hf_capwap_header_flags_m = -1;
static int hf_capwap_header_flags_k = -1;
static int hf_capwap_header_flags_r = -1;

static int hf_capwap_header_fragment_id = -1;
static int hf_capwap_header_fragment_offset = -1;
static int hf_capwap_header_reserved = -1;

static int hf_capwap_header_mac_length = -1;
static int hf_capwap_header_mac_eui48 = -1;
static int hf_capwap_header_mac_eui64 = -1;
static int hf_capwap_header_mac_data = -1;

static int hf_capwap_header_wireless_length = -1;
static int hf_capwap_header_wireless_data = -1;

static int hf_capwap_header_wireless_data_ieee80211_fi = -1;
static int hf_capwap_header_wireless_data_ieee80211_fi_rssi = -1;
static int hf_capwap_header_wireless_data_ieee80211_fi_snr = -1;
static int hf_capwap_header_wireless_data_ieee80211_fi_data_rate = -1;
static int hf_capwap_header_wireless_data_ieee80211_dest_wlan = -1;
static int hf_capwap_header_wireless_data_ieee80211_dw_wlan_id_bitmap = -1;
static int hf_capwap_header_wireless_data_ieee80211_dw_reserved = -1;
static int hf_capwap_header_padding = -1;

static int hf_capwap_control_header = -1;
static int hf_capwap_control_header_msg_type = -1;
static int hf_capwap_control_header_msg_type_enterprise_nbr = -1;
static int hf_capwap_control_header_msg_type_enterprise_specific = -1;
static int hf_capwap_control_header_seq_number = -1;
static int hf_capwap_control_header_flags = -1;
static int hf_capwap_control_header_msg_element_length = -1;

static int hf_capwap_message_element = -1;
static int hf_capwap_msg_element = -1;
static int hf_capwap_msg_element_type = -1;
static int hf_capwap_msg_element_length = -1;
static int hf_capwap_msg_element_value = -1;

static int hf_capwap_msg_element_type_ac_descriptor_stations = -1;
static int hf_capwap_msg_element_type_ac_descriptor_limit = -1;
static int hf_capwap_msg_element_type_ac_descriptor_active_wtp = -1;
static int hf_capwap_msg_element_type_ac_descriptor_max_wtp = -1;
/* AC Descriptor Security Flags... */
static int hf_capwap_msg_element_type_ac_descriptor_security = -1;
static int hf_capwap_msg_element_type_ac_descriptor_security_s = -1;
static int hf_capwap_msg_element_type_ac_descriptor_security_x = -1;
static int hf_capwap_msg_element_type_ac_descriptor_security_r = -1;
static int hf_capwap_msg_element_type_ac_descriptor_rmac_field = -1;
static int hf_capwap_msg_element_type_ac_descriptor_reserved = -1;
/* AC Descriptor DTLS Policy Flags... */
static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy = -1;
static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_d = -1;
static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_c = -1;
static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_r = -1;

static int hf_capwap_msg_element_type_ac_information = -1;
static int hf_capwap_msg_element_type_ac_information_vendor = -1;
static int hf_capwap_msg_element_type_ac_information_type = -1;
static int hf_capwap_msg_element_type_ac_information_length = -1;
static int hf_capwap_msg_element_type_ac_information_value = -1;
static int hf_capwap_msg_element_type_ac_information_hardware_version = -1;
static int hf_capwap_msg_element_type_ac_information_software_version = -1;

static int hf_capwap_msg_element_type_ac_name = -1;
static int hf_capwap_msg_element_type_ac_name_with_priority = -1;

static int hf_capwap_msg_element_type_ac_ipv4_list = -1;
static int hf_capwap_msg_element_type_ac_ipv6_list = -1;

static int hf_capwap_msg_element_type_capwap_control_ipv4 = -1;
static int hf_capwap_msg_element_type_capwap_control_ipv6 = -1;
static int hf_capwap_msg_element_type_capwap_control_wtp_count = -1;

static int hf_capwap_msg_element_type_capwap_timers_discovery = -1;
static int hf_capwap_msg_element_type_capwap_timers_echo_request = -1;

static int hf_capwap_msg_element_type_decryption_error_report_period_radio_id = -1;
static int hf_capwap_msg_element_type_decryption_error_report_period_interval = -1;

static int hf_capwap_msg_element_type_discovery_type = -1;

static int hf_capwap_msg_element_type_location_data = -1;

static int hf_capwap_msg_element_type_maximum_message_length = -1;

static int hf_capwap_msg_element_type_idle_timeout = -1;
static int hf_capwap_msg_element_type_radio_admin_id = -1;
static int hf_capwap_msg_element_type_radio_admin_state = -1;

static int hf_capwap_msg_element_type_radio_op_state_radio_id = -1;
static int hf_capwap_msg_element_type_radio_op_state_radio_state = -1;
static int hf_capwap_msg_element_type_radio_op_state_radio_cause = -1;
static int hf_capwap_msg_element_type_result_code = -1;

static int hf_capwap_msg_element_type_session_id = -1;

static int hf_capwap_msg_element_type_statistics_timer = -1;

static int hf_capwap_msg_element_type_vsp_vendor_identifier = -1;
static int hf_capwap_msg_element_type_vsp_vendor_element_id = -1;
static int hf_capwap_msg_element_type_vsp_vendor_data = -1;

static int hf_capwap_msg_element_type_wtp_board_data = -1;
static int hf_capwap_msg_element_type_wtp_board_data_vendor = -1;
static int hf_capwap_msg_element_type_wtp_board_data_type = -1;
static int hf_capwap_msg_element_type_wtp_board_data_length = -1;
static int hf_capwap_msg_element_type_wtp_board_data_value = -1;
static int hf_capwap_msg_element_type_wtp_board_data_wtp_model_number  = -1;
static int hf_capwap_msg_element_type_wtp_board_data_wtp_serial_number  = -1;
static int hf_capwap_msg_element_type_wtp_board_data_wtp_board_id  = -1;
static int hf_capwap_msg_element_type_wtp_board_data_wtp_board_revision  = -1;
static int hf_capwap_msg_element_type_wtp_board_data_base_mac_address  = -1;

static int hf_capwap_msg_element_type_wtp_descriptor_max_radios = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_radio_in_use = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_number_encrypt = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_encrypt = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_reserved = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_wbid = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_capabilities = -1;

static int hf_capwap_msg_element_type_wtp_descriptor = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_vendor = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_type = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_length = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_value = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_hardware_version = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_active_software_version = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_boot_version = -1;
static int hf_capwap_msg_element_type_wtp_descriptor_other_software_version = -1;

static int hf_capwap_msg_element_type_wtp_fallback = -1;
static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode = -1;
static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_n = -1;
static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_e = -1;
static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_l = -1;
static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_r = -1;

static int hf_capwap_msg_element_type_wtp_mac_type = -1;

static int hf_capwap_msg_element_type_wtp_name = -1;

static int hf_capwap_msg_element_type_wtp_reboot_statistics_reboot_count = -1;
static int hf_capwap_msg_element_type_wtp_reboot_statistics_ac_initiated_count = -1;
static int hf_capwap_msg_element_type_wtp_reboot_statistics_link_failure_count = -1;
static int hf_capwap_msg_element_type_wtp_reboot_statistics_sw_failure_count = -1;
static int hf_capwap_msg_element_type_wtp_reboot_statistics_hw_failure_count = -1;
static int hf_capwap_msg_element_type_wtp_reboot_statistics_other_failure_count = -1;
static int hf_capwap_msg_element_type_wtp_reboot_statistics_unknown_failure_count = -1;
static int hf_capwap_msg_element_type_wtp_reboot_statistics_last_failure_type = -1;

static int hf_capwap_msg_element_type_ieee80211_rate_set_radio_id = -1;
static int hf_capwap_msg_element_type_ieee80211_rate_set_rate_set = -1;

static int hf_capwap_msg_element_type_ieee80211_station_session_key_mac = -1;
static int hf_capwap_msg_element_type_ieee80211_station_session_key_flags = -1;
static int hf_capwap_msg_element_type_ieee80211_station_session_key_flags_a = -1;
static int hf_capwap_msg_element_type_ieee80211_station_session_key_flags_c = -1;
static int hf_capwap_msg_element_type_ieee80211_station_session_key_pairwire_tsc = -1;
static int hf_capwap_msg_element_type_ieee80211_station_session_key_pairwire_rsc = -1;
static int hf_capwap_msg_element_type_ieee80211_station_session_key_key = -1;

static int hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_id = -1;
static int hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_reserved = -1;
static int hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_n = -1;
static int hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_g = -1;
static int hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_a = -1;
static int hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_b = -1;

static int hf_capwap_data_keep_alive = -1;
static int hf_capwap_data_keep_alive_length = -1;

static int hf_msg_fragments = -1;
static int hf_msg_fragment = -1;
static int hf_msg_fragment_overlap = -1;
static int hf_msg_fragment_overlap_conflicts = -1;
static int hf_msg_fragment_multiple_tails = -1;
static int hf_msg_fragment_too_long_fragment = -1;
static int hf_msg_fragment_error = -1;
static int hf_msg_fragment_count = -1;
static int hf_msg_reassembled_in = -1;
static int hf_msg_reassembled_length = -1;

static dissector_handle_t dtls_handle;
static dissector_handle_t ieee8023_handle;
static dissector_handle_t ieee80211_handle;
static dissector_handle_t ieee80211_bsfc_handle;
static dissector_handle_t data_handle;

/* Initialize the subtree pointers */
static gint ett_capwap = -1;

static gint ett_msg_fragment = -1;
static gint ett_msg_fragments = -1;

static expert_field ei_capwap_header_length_bad = EI_INIT;
static expert_field ei_capwap_data_keep_alive_length = EI_INIT;


/* ************************************************************************* */
/*                  Fragment items                                           */
/* ************************************************************************* */

static const fragment_items capwap_frag_items = {
    /* Fragment subtrees */
    &ett_msg_fragment,
    &ett_msg_fragments,
    /* Fragment fields */
    &hf_msg_fragments,
    &hf_msg_fragment,
    &hf_msg_fragment_overlap,
    &hf_msg_fragment_overlap_conflicts,
    &hf_msg_fragment_multiple_tails,
    &hf_msg_fragment_too_long_fragment,
    &hf_msg_fragment_error,
    &hf_msg_fragment_count,
    /* Reassembled in field */
    &hf_msg_reassembled_in,
    /* Reassembled length field */
    &hf_msg_reassembled_length,
    /* Reassembled data field */
    NULL,
    /* Tag */
    "Message fragments"
};

/* ************************************************************************* */
/*                  Header Type                                              */
/* ************************************************************************* */
static const value_string type_header_vals[] = {
    { 0, "CAPWAP Header" },
    { 1, "CAPWAP DTLS Header" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                   Wireless Binding IDentifier (WBID)                      */
/* ************************************************************************* */
static const value_string type_wbid[] = {
    { 0, "Reserved" },
    { 1, "IEEE 802.11" },
    { 2, "IEEE 802.16" }, /* From old RFC Draft... */
    { 3, "EPCGlobal" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                 flag Type Transported (payload)                           */
/* ************************************************************************* */
static const true_false_string flag_type_t = {
    "Native frame format (see Wireless Binding ID field)",
    "IEEE 802.3 frame"
};
/* ************************************************************************* */
/*                 flag Type Fragment                                        */
/* ************************************************************************* */
static const true_false_string flag_type_f = {
    "Fragmented",
    "Don't Fragment"
};
/* ************************************************************************* */
/*                 flag Type Last Fragment                                   */
/* ************************************************************************* */
static const true_false_string flag_type_l = {
    "This is the last fragment",
    "More fragments follow"
 };
/* ************************************************************************* */
/*                 flag Type Wireless                                        */
/* ************************************************************************* */
static const true_false_string flag_type_w = {
    "Wireless Specific Information is present",
    "No Wireless Specific Information"
 };
/* ************************************************************************* */
/*                 flag Type Radio Mac                                       */
/* ************************************************************************* */
static const true_false_string flag_type_m = {
    "Radio MAC Address is present",
    "No Radio MAC Address"
 };
/* ************************************************************************* */
/*                 flag Type Keep Alive                                      */
/* ************************************************************************* */
static const true_false_string flag_type_k = {
    "Keep-Alive Packet",
    "No Keep-Alive"
 };
/* ************************************************************************* */
/*                  Message Type Value                                       */
/* ************************************************************************* */
static const value_string message_type[] = {
    { 1, "Discovery Request" },
    { 2, "Discovery Response" },
    { 3, "Join Request" },
    { 4, "Join Response" },
    { 5, "Configuration Status Request" },
    { 6, "Configuration Status Response" },
    { 7, "Configuration Update Request" },
    { 8, "Configuration Update Response" },
    { 9, "WTP Event Request" },
    { 10, "WTP Event Response" },
    { 11, "Change State Request" },
    { 12, "Change State Response" },
    { 13, "Echo Request" },
    { 14, "Echo Response" },
    { 15, "Image Data Request" },
    { 16, "Image Data Response" },
    { 17, "Reset Request" },
    { 18, "Reset Response" },
    { 19, "Primary Discovery Request" },
    { 20, "Primary Discovery Response" },
    { 21, "Data Transfer Request" },
    { 22, "Data Transfer Response" },
    { 23, "Clear Configuration Request" },
    { 24, "Clear Configuration Response" },
    { 25, "Station Configuration Request" },
    { 26, "Station Configuration Response" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      Message Element Type                                 */
/* ************************************************************************* */
#define TYPE_AC_DESCRIPTOR                        1
#define TYPE_AC_IPV4_LIST                         2
#define TYPE_AC_IPV6_LIST                         3
#define TYPE_AC_NAME                              4
#define TYPE_AC_NAME_W_PRIORITY                   5
#define TYPE_AC_TIMESTAMP                         6
#define TYPE_ADD_MAC_ACL_ENTRY                    7
#define TYPE_ADD_STATION                          8
#define TYPE_RESERVED_9                           9
#define TYPE_CAPWAP_CONTROL_IPV4_ADDRESS          10
#define TYPE_CAPWAP_CONTROL_IPV6_ADDRESS          11
#define TYPE_CAPWAP_TIMERS                        12
#define TYPE_DATA_TRANSFER_DATA                   13
#define TYPE_DATA_TRANSFER_MODE                   14
#define TYPE_DESCRYPTION_ERROR_REPORT             15
#define TYPE_DECRYPTION_ERROR_REPORT_PERIOD       16
#define TYPE_DELETE_MAC_ENTRY                     17
#define TYPE_DELETE_STATION                       18
#define TYPE_RESERVED_19                          19
#define TYPE_DISCOVERY_TYPE                       20
#define TYPE_DUPLICATE_IPV4_ADDRESS               21
#define TYPE_DUPLICATE_IPV6_ADDRESS               22
#define TYPE_IDLE_TIMEOUT                         23
#define TYPE_IMAGE_DATA                           24
#define TYPE_IMAGE_IDENTIFIER                     25
#define TYPE_IMAGE_INFORMATION                    26
#define TYPE_INITIATE_DOWNLOAD                    27
#define TYPE_LOCATION_DATA                        28
#define TYPE_MAXIMUM_MESSAGE_LENGTH               29
#define TYPE_CAPWAP_LOCAL_IPV4_ADDRESS            30
#define TYPE_RADIO_ADMINISTRATIVE_STATE           31
#define TYPE_RADIO_OPERATIONAL_STATE              32
#define TYPE_RESULT_CODE                          33
#define TYPE_RETURNED_MESSAGE_ELEMENT             34
#define TYPE_SESSION_ID                           35
#define TYPE_STATISTICS_TIMER                     36
#define TYPE_VENDOR_SPECIFIC_PAYLOAD              37
#define TYPE_WTP_BOARD_DATA                       38
#define TYPE_WTP_DESCRIPTOR                       39
#define TYPE_WTP_FALLBACK                         40
#define TYPE_WTP_FRAME_TUNNEL_MODE                41
#define TYPE_RESERVED_42                          42
#define TYPE_RESERVED_43                          43
#define TYPE_WTP_MAC_TYPE                         44
#define TYPE_WTP_NAME                             45
#define TYPE_RESERVED_46                          46
#define TYPE_WTP_RADIO_STATISTICS                 47
#define TYPE_WTP_REBOOT_STATISTICS                48
#define TYPE_WTP_STATIC_IP_ADDRESS_INFORMATION    49
#define TYPE_CAPWAP_LOCAL_IPV6_ADDRESS            50
#define TYPE_CAPWAP_TRANSPORT_PROTOCOL            51
#define TYPE_MTU_DISCOVERY_PADDING                52
#define TYPE_ECN_SUPPORT                          53

#define IEEE80211_ADD_WLAN                        1024
#define IEEE80211_ANTENNA                         1025
#define IEEE80211_ASSIGNED_WTP_BSSID              1026
#define IEEE80211_DELETE_WLAN                     1027
#define IEEE80211_DIRECT_SEQUENCE_CONTROL         1028
#define IEEE80211_INFORMATION_ELEMENT             1029
#define IEEE80211_MAC_OPERATION                   1030
#define IEEE80211_MIC_COUNTERMEASURES             1031
#define IEEE80211_MULTI_DOMAIN_CAPABILITY         1032
#define IEEE80211_OFDM_CONTROL                    1033
#define IEEE80211_RATE_SET                        1034
#define IEEE80211_RSNA_ERROR_REPORT_FROM_STATION  1035
#define IEEE80211_STATION                         1036
#define IEEE80211_STATION_QOS_PROFILE             1037
#define IEEE80211_STATION_SESSION_KEY             1038
#define IEEE80211_STATISTICS                      1039
#define IEEE80211_SUPPORTED_RATES                 1040
#define IEEE80211_TX_POWER                        1041
#define IEEE80211_TX_POWER_LEVEL                  1042
#define IEEE80211_UPDATE_STATION_QOS              1043
#define IEEE80211_UPDATE_WLAN                     1044
#define IEEE80211_WTP_QUALITY_OF_SERVICE          1045
#define IEEE80211_WTP_RADIO_CONFIGURATION         1046
#define IEEE80211_WTP_RADIO_FAIL_ALARM_INDICATION 1047
#define IEEE80211_WTP_RADIO_INFORMATION           1048

/* ************************************************************************* */
/*                      Message Element Type Value                           */
/* ************************************************************************* */
static const value_string message_element_type_vals[] = {
    { TYPE_AC_DESCRIPTOR, "AC Descriptor" },
    { TYPE_AC_IPV4_LIST, "AC IPv4 List" },
    { TYPE_AC_IPV6_LIST, "AC IPv6 List" },
    { TYPE_AC_NAME, "AC Name" },
    { TYPE_AC_NAME_W_PRIORITY, "AC Name With Priority" },
    { TYPE_AC_TIMESTAMP, "AC Timestamp" },
    { TYPE_ADD_MAC_ACL_ENTRY, "Add MAC ACL Entry" },
    { TYPE_ADD_STATION, "Add Station" },
    { TYPE_RESERVED_9, "Reserved" },
    { TYPE_CAPWAP_CONTROL_IPV4_ADDRESS, "CAPWAP Control IPv4 Address" },
    { TYPE_CAPWAP_CONTROL_IPV6_ADDRESS, "CAPWAP Control IPv6 Address" },
    { TYPE_CAPWAP_TIMERS, "CAPWAP Timers" },
    { TYPE_DATA_TRANSFER_DATA, "Data Transfer Data" },
    { TYPE_DATA_TRANSFER_MODE, "Data Transfer Mode" },
    { TYPE_DESCRYPTION_ERROR_REPORT, "Decryption Error Report" },
    { TYPE_DECRYPTION_ERROR_REPORT_PERIOD, "Decryption Error Report Period" },
    { TYPE_DELETE_MAC_ENTRY, "Delete MAC ACL Entry" },
    { TYPE_DELETE_STATION, "Delete Station" },
    { TYPE_RESERVED_19, "Reserved" },
    { TYPE_DISCOVERY_TYPE, "Discovery Type" },
    { TYPE_DUPLICATE_IPV4_ADDRESS, "Duplicate IPv4 Address" },
    { TYPE_DUPLICATE_IPV6_ADDRESS, "Duplicate IPv6 Address" },
    { TYPE_IDLE_TIMEOUT, "Idle Timeout" },
    { TYPE_IMAGE_DATA, "Image Data" },
    { TYPE_IMAGE_IDENTIFIER, "Image Identifier" },
    { TYPE_IMAGE_INFORMATION, "Image Information" },
    { TYPE_INITIATE_DOWNLOAD, "Initiate Download" },
    { TYPE_LOCATION_DATA, "Location Data" },
    { TYPE_MAXIMUM_MESSAGE_LENGTH, "Maximum Message Length" },
    { TYPE_CAPWAP_LOCAL_IPV4_ADDRESS, "CAPWAP Local IPv4 Address" },
    { TYPE_RADIO_ADMINISTRATIVE_STATE, "Radio Administrative State " },
    { TYPE_RADIO_OPERATIONAL_STATE, "Radio Operational State" },
    { TYPE_RESULT_CODE, "Result Code" },
    { TYPE_RETURNED_MESSAGE_ELEMENT, "Returned Message Element" },
    { TYPE_SESSION_ID, "Session ID" },
    { TYPE_STATISTICS_TIMER, "Statistics Timer" },
    { TYPE_VENDOR_SPECIFIC_PAYLOAD, "Vendor Specific Payload" },
    { TYPE_WTP_BOARD_DATA, "WTP Board Data" },
    { TYPE_WTP_DESCRIPTOR, "WTP Descriptor" },
    { TYPE_WTP_FALLBACK, "WTP Fallback " },
    { TYPE_WTP_FRAME_TUNNEL_MODE, "WTP Frame Tunnel Mode " },
    { TYPE_RESERVED_42, "Reserved" },
    { TYPE_RESERVED_43, "Reserved" },
    { TYPE_WTP_MAC_TYPE, "WTP MAC Type" },
    { TYPE_WTP_NAME, "WTP Name" },
    { TYPE_RESERVED_46, "Unused/Reserved" },
    { TYPE_WTP_RADIO_STATISTICS, "WTP Radio Statistics" },
    { TYPE_WTP_REBOOT_STATISTICS, "WTP Reboot Statistics" },
    { TYPE_WTP_STATIC_IP_ADDRESS_INFORMATION, "WTP Static IP Address Information" },
    { TYPE_CAPWAP_LOCAL_IPV6_ADDRESS, "CAPWAP Local IPv6 Address" },
    { TYPE_CAPWAP_TRANSPORT_PROTOCOL, "CAPWAP Transport Protocol" },
    { TYPE_MTU_DISCOVERY_PADDING, "MTU Discovery Padding" },
    { TYPE_ECN_SUPPORT, "ECN Support" },

    { IEEE80211_ADD_WLAN, "IEEE 802.11 Add WLAN" },
    { IEEE80211_ANTENNA, "IEEE 802.11 Antenna" },
    { IEEE80211_ASSIGNED_WTP_BSSID, "IEEE 802.11 Assigned WTP BSSID" },
    { IEEE80211_DELETE_WLAN, "IEEE 802.11 Delete WLAN" },
    { IEEE80211_DIRECT_SEQUENCE_CONTROL, "IEEE 802.11 Direct Sequence Control" },
    { IEEE80211_INFORMATION_ELEMENT, "IEEE 802.11 Information Element" },
    { IEEE80211_MAC_OPERATION, "IEEE 802.11 MAC Operation" },
    { IEEE80211_MIC_COUNTERMEASURES, "IEEE 802.11 MIC Countermeasures" },
    { IEEE80211_MULTI_DOMAIN_CAPABILITY, "IEEE 802.11 Multi-Domain Capability" },
    { IEEE80211_OFDM_CONTROL, "IEEE 802.11 OFDM Control" },
    { IEEE80211_RATE_SET, "IEEE 802.11 Rate Set" },
    { IEEE80211_RSNA_ERROR_REPORT_FROM_STATION, "IEEE 802.11 RSNA Error Report From Station" },
    { IEEE80211_STATION, "IEEE 802.11 Station" },
    { IEEE80211_STATION_QOS_PROFILE, "IEEE 802.11 Station QoS Profile" },
    { IEEE80211_STATION_SESSION_KEY, "IEEE 802.11 Station Session Key" },
    { IEEE80211_STATISTICS, "IEEE 802.11 Statistics" },
    { IEEE80211_SUPPORTED_RATES, "IEEE 802.11 Supported Rates" },
    { IEEE80211_TX_POWER, "IEEE 802.11 Tx Power" },
    { IEEE80211_TX_POWER_LEVEL, "IEEE 802.11 Tx Power Level" },
    { IEEE80211_UPDATE_STATION_QOS, "IEEE 802.11 Update Station QoS" },
    { IEEE80211_UPDATE_WLAN, "IEEE 802.11 Update WLAN" },
    { IEEE80211_WTP_QUALITY_OF_SERVICE, "IEEE 802.11 WTP Quality of Service" },
    { IEEE80211_WTP_RADIO_CONFIGURATION, "IEEE 802.11 WTP Radio Configuration" },
    { IEEE80211_WTP_RADIO_FAIL_ALARM_INDICATION, "IEEE 802.11 WTP Radio Fail Alarm Indication" },
    { IEEE80211_WTP_RADIO_INFORMATION, "IEEE 802.11 WTP Radio Information" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      Discovery Type                                       */
/* ************************************************************************* */
static const value_string discovery_type_vals[] = {
    { 0, "Unknown" },
    { 1, "Static Configuration" },
    { 2, "DHCP" },
    { 3, "DNS" },
    { 4, "AC Referral" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      Radio Administrative State                           */
/* ************************************************************************* */
static const value_string radio_admin_state_vals[] = {
    { 1, "Enabled" },
    { 2, "Disabled" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      Radio Operational State                              */
/* ************************************************************************* */
static const value_string radio_op_state_vals[] = {
    { 0, "Reserved" },
    { 1, "Enabled" },
    { 2, "Disabled" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      Radio Operational Cause                              */
/* ************************************************************************* */
static const value_string radio_op_cause_vals[] = {
    { 0, "Normal" },
    { 1, "Radio Failure" },
    { 2, "Software Failure" },
    { 3, "Administratively Set" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      Result Code                                          */
/* ************************************************************************* */
static const value_string result_code_vals[] = {
    { 0 , "Success" },
    { 1 , "Failure (AC List Message Element MUST Be Present)" },
    { 2 , "Success (NAT Detected)" },
    { 3 , "Join Failure (Unspecified)" },
    { 4 , "Join Failure (Resource Depletion)" },
    { 5 , "Join Failure (Unknown Source)" },
    { 6 , "Join Failure (Incorrect Data)" },
    { 7 , "Join Failure (Session ID Already in Use)" },
    { 8 , "Join Failure (WTP Hardware Not Supported)" },
    { 9 , "Join Failure (Binding Not Supported)" },
    { 10, "Reset Failure (Unable to Reset)" },
    { 11, "Reset Failure (Firmware Write Error)" },
    { 12, "Configuration Failure (Unable to Apply Requested Configuration - Service Provided Anyhow)" },
    { 13, "Configuration Failure (Unable to Apply Requested Configuration - Service Not Provided)" },
    { 14, "Image Data Error (Invalid Checksum)" },
    { 15, "Image Data Error (Invalid Data Length)" },
    { 16, "Image Data Error (Other Error)" },
    { 17, "Image Data Error (Image Already Present)" },
    { 18, "Message Unexpected (Invalid in Current State)" },
    { 19, "Message Unexpected (Unrecognized Request)" },
    { 20, "Failure - Missing Mandatory Message Element" },
    { 21, "Failure - Unrecognized Message Element" },
    { 22, "Data Transfer Error (No Information to Transfer)" },
    { 0 ,     NULL     }
};
/* ************************************************************************* */
/*                      Radio MAC Address Field                              */
/* ************************************************************************* */
static const value_string rmac_field_vals[] = {
    { 0, "Reserved" },
    { 1, "Supported" },
    { 2, "Not Supported" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      Board Data Type Value                                */
/* ************************************************************************* */
#define BOARD_DATA_WTP_MODEL_NUMBER 0
#define BOARD_DATA_WTP_SERIAL_NUMBER 1
#define BOARD_DATA_BOARD_ID 2
#define BOARD_DATA_BOARD_REVISION 3
#define BOARD_DATA_BASE_MAC_ADDRESS 4

static const value_string board_data_type_vals[] = {
    { BOARD_DATA_WTP_MODEL_NUMBER, "WTP Model Number" },
    { BOARD_DATA_WTP_SERIAL_NUMBER, "WTP Serial Number" },
    { BOARD_DATA_BOARD_ID, "Board ID" },
    { BOARD_DATA_BOARD_REVISION, "Board Revision" },
    { BOARD_DATA_BASE_MAC_ADDRESS, "Base MAC Address" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      Descriptor WTP Type Value                            */
/* ************************************************************************* */
#define WTP_DESCRIPTOR_HARDWARE_VERSION 0
#define WTP_DESCRIPTOR_ACTIVE_SOFTWARE_VERSION 1
#define WTP_DESCRIPTOR_BOOT_VERSION 2
#define WTP_DESCRIPTOR_OTHER_SOFTWARE_VERSION 3

static const value_string wtp_descriptor_type_vals[] = {
    { WTP_DESCRIPTOR_HARDWARE_VERSION, "WTP Hardware Version" },
    { WTP_DESCRIPTOR_ACTIVE_SOFTWARE_VERSION, "WTP Active Software Version" },
    { WTP_DESCRIPTOR_BOOT_VERSION, "WTP Boot Version" },
    { WTP_DESCRIPTOR_OTHER_SOFTWARE_VERSION, "WTP Other Software Version" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      AC Information Type Value                            */
/* ************************************************************************* */
#define AC_INFORMATION_HARDWARE_VERSION 4
#define AC_INFORMATION_SOFTWARE_VERSION 5

static const value_string ac_information_type_vals[] = {
    { AC_INFORMATION_HARDWARE_VERSION, "AC Hardware Version" },
    { AC_INFORMATION_SOFTWARE_VERSION, "AC  Software Version" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      WTP MAC Type                                         */
/* ************************************************************************* */
static const value_string wtp_mac_vals[] = {
    { 0, "Local MAC" },
    { 1, "Split MAC" },
    { 2, "Both (Local and Split MAC)" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                      WTP Fallback                                         */
/* ************************************************************************* */
static const value_string wtp_fallback_vals[] = {
    { 0, "Reserved" },
    { 1, "Enabled" },
    { 2, "Disabled" },
    { 0,     NULL     }
};
/* ************************************************************************* */
/*                     Last Failure Type                                     */
/* ************************************************************************* */
static const value_string last_failure_type_vals[] = {
    { 0, "Not Supported" },
    { 1, "AC Initiated" },
    { 2, "Link Failure" },
    { 3, "Software Failure" },
    { 4, "Hardware Failure" },
    { 5, "Other Failure" },
    { 255, "Unknown (e.g., WTP doesn't keep track of info)" },
    { 0,     NULL     }
};

static void capwap_reassemble_init(void)
{
    reassembly_table_init(&capwap_reassembly_table,
                          &addresses_reassembly_table_functions);
}

static void
dissect_capwap_data_message_bindings_ieee80211(tvbuff_t *tvb, proto_tree *data_message_binding_tree, guint offset, packet_info *pinfo)
{
    proto_item *data_message_binding_item;
    proto_tree *sub_data_message_binding_tree;

    if (global_capwap_data_udp_port == pinfo->destport)
    {
        /* (WTP -> AC) IEEE 802.11 Frame Info */
        data_message_binding_item = proto_tree_add_item(data_message_binding_tree, hf_capwap_header_wireless_data_ieee80211_fi,tvb, offset, 4, ENC_NA);
        sub_data_message_binding_tree = proto_item_add_subtree(data_message_binding_item, ett_capwap);

        proto_tree_add_item(sub_data_message_binding_tree, hf_capwap_header_wireless_data_ieee80211_fi_rssi,tvb, offset, 1, ENC_BIG_ENDIAN);

        proto_tree_add_item(sub_data_message_binding_tree, hf_capwap_header_wireless_data_ieee80211_fi_snr,tvb, offset+1, 1, ENC_BIG_ENDIAN);

        proto_tree_add_item(sub_data_message_binding_tree, hf_capwap_header_wireless_data_ieee80211_fi_data_rate,tvb, offset+2, 2, ENC_BIG_ENDIAN);
    }
    else
    {
        /* (AC -> WTP) IEEE 802.11 Destination Wlans */
        data_message_binding_item = proto_tree_add_item(data_message_binding_tree, hf_capwap_header_wireless_data_ieee80211_dest_wlan,tvb, offset, 4, ENC_NA);
        sub_data_message_binding_tree = proto_item_add_subtree(data_message_binding_item, ett_capwap);

        proto_tree_add_item(sub_data_message_binding_tree, hf_capwap_header_wireless_data_ieee80211_dw_wlan_id_bitmap,tvb, offset, 2, ENC_BIG_ENDIAN);

        proto_tree_add_item(sub_data_message_binding_tree, hf_capwap_header_wireless_data_ieee80211_dw_reserved,tvb, offset+2, 2, ENC_BIG_ENDIAN);
    }
}

static void
dissect_capwap_encryption_capabilities(tvbuff_t *tvb, proto_tree *encryption_capabilities_tree, guint offset)
{
    proto_item *encryption_capabilities_item;
    proto_tree *sub_encryption_capabilities_tree;

    encryption_capabilities_item = proto_tree_add_item(encryption_capabilities_tree, hf_capwap_msg_element_type_wtp_descriptor_encrypt, tvb, offset, 3, ENC_NA);
    sub_encryption_capabilities_tree = proto_item_add_subtree(encryption_capabilities_item, ett_capwap);

    proto_tree_add_item(sub_encryption_capabilities_tree, hf_capwap_msg_element_type_wtp_descriptor_encrypt_reserved, tvb, offset, 1, ENC_NA);

    proto_tree_add_item (sub_encryption_capabilities_tree, hf_capwap_msg_element_type_wtp_descriptor_encrypt_wbid, tvb, offset, 1, ENC_NA);
    proto_item_append_text(encryption_capabilities_item, ": (WBID %d)",tvb_get_guint8(tvb, offset) & 0x1F);


    proto_tree_add_item(sub_encryption_capabilities_tree, hf_capwap_msg_element_type_wtp_descriptor_encrypt_capabilities, tvb, offset+1, 2, ENC_BIG_ENDIAN);
    proto_item_append_text(encryption_capabilities_item, " %d",tvb_get_ntohs(tvb, offset+1));

}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_ac_information(tvbuff_t *tvb, proto_tree *ac_information_type_tree, guint offset)
{
    guint optlen,ac_information_type = 0;
    proto_item *ac_information_type_item;
    proto_tree *sub_ac_information_type_tree;

    ac_information_type = tvb_get_ntohs(tvb, offset+4);
    optlen = tvb_get_ntohs(tvb, offset+6);
    ac_information_type_item = proto_tree_add_item(ac_information_type_tree, hf_capwap_msg_element_type_ac_information, tvb, offset, 4+2+2+optlen, ENC_NA );

    proto_item_append_text(ac_information_type_item,": (t=%d,l=%d) %s", ac_information_type, optlen, val_to_str(ac_information_type,ac_information_type_vals,"Unknown AC Information Type (%02d)") );

    sub_ac_information_type_tree = proto_item_add_subtree(ac_information_type_item, ett_capwap);

    proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_vendor, tvb, offset, 4, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_type, tvb, offset+4, 2, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_length, tvb, offset+6, 2, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_value, tvb, offset+8, optlen, ENC_NA);

    switch (ac_information_type) {
    case AC_INFORMATION_HARDWARE_VERSION:
        proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_hardware_version, tvb, offset+8, optlen, ENC_ASCII|ENC_NA);
        break;

    case AC_INFORMATION_SOFTWARE_VERSION:
        proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_software_version, tvb, offset+8, optlen, ENC_ASCII|ENC_NA);
        break;

    default:
        /* No Default Action */
        break;
    }
    return 4+2+2+optlen;
}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_wtp_descriptor(tvbuff_t *tvb, proto_tree *wtp_descriptor_type_tree, guint offset)
{
    guint optlen,wtp_descriptor_type = 0;
    proto_item *wtp_descriptor_type_item;
    proto_tree *sub_wtp_descriptor_type_tree;

    wtp_descriptor_type = tvb_get_ntohs(tvb, offset+4);
    optlen = tvb_get_ntohs(tvb, offset+6);
    wtp_descriptor_type_item = proto_tree_add_item(wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor, tvb, offset, 4+2+2+optlen, ENC_NA);

    proto_item_append_text(wtp_descriptor_type_item, ": (t=%d,l=%d) %s", wtp_descriptor_type, optlen, val_to_str(wtp_descriptor_type,wtp_descriptor_type_vals,"Unknown WTP Descriptor Type (%02d)") );

    sub_wtp_descriptor_type_tree = proto_item_add_subtree(wtp_descriptor_type_item, ett_capwap);

    proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_vendor, tvb, offset, 4, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_type, tvb, offset+4, 2, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_length, tvb, offset+6, 2, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_value, tvb, offset+8, optlen, ENC_NA);

    switch (wtp_descriptor_type) {
    case WTP_DESCRIPTOR_HARDWARE_VERSION:
        proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_hardware_version, tvb, offset+8, optlen, ENC_ASCII|ENC_NA);
        break;

    case WTP_DESCRIPTOR_ACTIVE_SOFTWARE_VERSION:
        proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_active_software_version, tvb, offset+8, optlen, ENC_ASCII|ENC_NA);
        break;

    case WTP_DESCRIPTOR_BOOT_VERSION:
        proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_boot_version, tvb, offset+8, optlen, ENC_ASCII|ENC_NA);
        break;

    case WTP_DESCRIPTOR_OTHER_SOFTWARE_VERSION:
        proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_other_software_version, tvb, offset+8, optlen, ENC_ASCII|ENC_NA);
        break;

    default:
        /* No Default Action */
        break;
    }

    return 4+2+2+optlen;
}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_board_data(tvbuff_t *tvb, proto_tree *board_data_type_tree, guint offset)
{
    guint optlen,board_data_type = 0;
    proto_item *board_data_type_item;
    proto_tree *sub_board_data_type_tree;

    board_data_type = tvb_get_ntohs(tvb, offset);
    optlen = tvb_get_ntohs(tvb, offset+2);
    board_data_type_item = proto_tree_add_item(board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data, tvb, offset, 2+2+optlen, ENC_NA );

    proto_item_append_text(board_data_type_item, ": (t=%d,l=%d) %s", board_data_type, optlen, val_to_str(board_data_type,board_data_type_vals,"Unknown Board Data Type (%02d)") );

    sub_board_data_type_tree = proto_item_add_subtree(board_data_type_item, ett_capwap);

    proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_type, tvb, offset, 2, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_length, tvb, offset+2, 2, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_value, tvb, offset+4, optlen, ENC_NA);
    switch (board_data_type) {
    case BOARD_DATA_WTP_MODEL_NUMBER:
        proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_wtp_model_number, tvb, offset+4, optlen, ENC_ASCII|ENC_NA);
        break;

    case BOARD_DATA_WTP_SERIAL_NUMBER:
        proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_wtp_serial_number, tvb, offset+4, optlen, ENC_ASCII|ENC_NA);
        break;

    case BOARD_DATA_BOARD_ID:
        proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_wtp_board_id, tvb, offset+4, optlen, ENC_ASCII|ENC_NA);
        break;

    case BOARD_DATA_BOARD_REVISION:
        proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_wtp_board_revision, tvb, offset+4, optlen, ENC_ASCII|ENC_NA);
        break;

    case BOARD_DATA_BASE_MAC_ADDRESS:
        proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_base_mac_address, tvb, offset+4, 6, ENC_NA);
        break;

    default:
        /* No Default Action */
        break;
    }

    return 2+2+optlen;
}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_message_element_type(tvbuff_t *tvb, proto_tree *msg_element_type_tree, guint offset)
{
    guint optlen, offset_end, number_encrypt, i, msg_element_type = 0;
    proto_item *msg_element_type_item, *msg_element_type_item_flag;
    proto_tree *sub_msg_element_type_tree, *sub_msg_element_type_flag_tree;

    msg_element_type = tvb_get_ntohs(tvb, offset);
    optlen = tvb_get_ntohs(tvb, offset+2);
    msg_element_type_item = proto_tree_add_item(msg_element_type_tree, hf_capwap_msg_element, tvb, offset, 2+2+optlen, ENC_NA );

    proto_item_append_text(msg_element_type_item, ": (t=%d,l=%d) %s", msg_element_type, optlen, val_to_str(msg_element_type,message_element_type_vals,"Unknown Message Element Type (%02d)") );

    sub_msg_element_type_tree = proto_item_add_subtree(msg_element_type_item, ett_capwap);

    proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type, tvb, offset, 2, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_length, tvb, offset+2, 2, ENC_BIG_ENDIAN);

    proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_value, tvb, offset+4, optlen, ENC_NA);

    switch (msg_element_type) {
    case TYPE_AC_DESCRIPTOR: /* AC Descriptor (1) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_stations, tvb, offset+4, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_limit, tvb, offset+6, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_active_wtp, tvb, offset+8, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_max_wtp, tvb, offset+10, 2, ENC_BIG_ENDIAN);

        /* AC Descriptor Security Flags... */
        msg_element_type_item_flag = proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_security, tvb, offset+12, 1, ENC_NA);
        sub_msg_element_type_flag_tree = proto_item_add_subtree(msg_element_type_item_flag, ett_capwap);

        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_security_r, tvb, offset+12, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_security_s, tvb, offset+12, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_security_x, tvb, offset+12, 1, ENC_BIG_ENDIAN);

        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_rmac_field, tvb, offset+13, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_reserved, tvb, offset+14, 1, ENC_BIG_ENDIAN);

        /* AC Descriptor DTLS Flags... */
        msg_element_type_item_flag = proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_dtls_policy, tvb, offset+15, 1, ENC_NA);
        sub_msg_element_type_flag_tree = proto_item_add_subtree(msg_element_type_item_flag, ett_capwap);

        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_dtls_policy_r, tvb, offset+15, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_dtls_policy_d, tvb, offset+15, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_dtls_policy_c, tvb, offset+15, 1, ENC_BIG_ENDIAN);

        offset_end = offset + optlen -4;
        offset += 4 + 12;
        while (offset < offset_end) {
            offset += dissect_capwap_ac_information(tvb, sub_msg_element_type_tree, offset);
        }
        break;

    case TYPE_AC_IPV4_LIST: /* AC IPv4 List (2) */
        offset_end = offset + 4 + optlen;
        offset += 4;

        if (optlen%4 == 0)
        {
            while (offset_end-offset > 0)
            {
                proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_ipv4_list, tvb, offset, 4, ENC_BIG_ENDIAN);
                offset += 4;
            }

        }
        break;
    case TYPE_AC_IPV6_LIST: /* AC IPv6 List (3) */
        offset_end = offset + 4 + optlen;
        offset += 4;

        if (optlen%16 == 0)
        {
            while (offset_end-offset > 0)
            {
                proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_ipv6_list, tvb, offset, 16, ENC_NA);
                offset += 16;
            }

        }
        break;
    case TYPE_AC_NAME: /* AC Name (4) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_name, tvb, offset+4, optlen, ENC_ASCII|ENC_NA);
        break;

    case TYPE_AC_NAME_W_PRIORITY: /* AC Name With Priority (5) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_name_with_priority, tvb, offset+1, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_name, tvb, offset+5, optlen-1, ENC_ASCII|ENC_NA);
        break;

    case TYPE_CAPWAP_CONTROL_IPV4_ADDRESS: /* CAPWAP Control IPv4 Address (10) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_capwap_control_ipv4, tvb, offset+4, 4, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_capwap_control_wtp_count, tvb, offset+8, 2, ENC_BIG_ENDIAN);
        break;

    case TYPE_CAPWAP_CONTROL_IPV6_ADDRESS: /* CAPWAP Control IPv6 Address (11) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_capwap_control_ipv6, tvb, offset+4, 16, ENC_NA);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_capwap_control_wtp_count, tvb, offset+20, 2, ENC_BIG_ENDIAN);
        break;

    case TYPE_CAPWAP_TIMERS: /* CAPWAP Timers (12) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_capwap_timers_discovery, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_capwap_timers_echo_request, tvb, offset+5, 1, ENC_BIG_ENDIAN);
        break;

    case TYPE_DECRYPTION_ERROR_REPORT_PERIOD: /* Decryption Error Report Period (16) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_decryption_error_report_period_radio_id, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree,hf_capwap_msg_element_type_decryption_error_report_period_interval, tvb, offset+5, 2, ENC_BIG_ENDIAN);
        break;

    case TYPE_DISCOVERY_TYPE: /* Discovery Type (20) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_discovery_type, tvb, offset+4, optlen, ENC_BIG_ENDIAN);
        break;
    case TYPE_IDLE_TIMEOUT: /* Idle Timeout (23) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_idle_timeout, tvb, offset+4, 4, ENC_BIG_ENDIAN);
        break;

    case TYPE_LOCATION_DATA: /* Location Data (28) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_location_data, tvb, offset+4, optlen, ENC_ASCII|ENC_NA);
        break;

    case TYPE_MAXIMUM_MESSAGE_LENGTH: /* Maximum Message Length (29) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_maximum_message_length, tvb, offset+4, 2, ENC_BIG_ENDIAN);
        break;

    case TYPE_RADIO_ADMINISTRATIVE_STATE: /* Radio Administrative State (31) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_radio_admin_id, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_radio_admin_state, tvb, offset+5, 1, ENC_BIG_ENDIAN);

        break;

    case TYPE_RADIO_OPERATIONAL_STATE: /* Radio Operational State (32) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_radio_op_state_radio_id, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_radio_op_state_radio_state, tvb, offset+5, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_radio_op_state_radio_cause, tvb, offset+6, 1, ENC_BIG_ENDIAN);
        break;

    case TYPE_RESULT_CODE: /* Result Code (33) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_result_code, tvb, offset+4, optlen, ENC_BIG_ENDIAN);

        break;

    case TYPE_SESSION_ID: /* Session ID (35) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_session_id, tvb, offset+4, optlen, ENC_NA);
        break;

    case TYPE_STATISTICS_TIMER: /* Statistics Timer (36) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_statistics_timer, tvb, offset+4, 2, ENC_BIG_ENDIAN);
        break;

    case TYPE_VENDOR_SPECIFIC_PAYLOAD: /* Vendor Specific Payload (37) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_vsp_vendor_identifier, tvb, offset+4, 4, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_vsp_vendor_element_id, tvb, offset+8, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_vsp_vendor_data, tvb, offset+10, optlen-6, ENC_NA);
        break;

    case TYPE_WTP_BOARD_DATA: /* WTP Board Data (38) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_board_data_vendor, tvb, offset+4, 4, ENC_BIG_ENDIAN);
        offset += 8;
        offset_end = offset + optlen -4;
        while (offset < offset_end) {
            offset += dissect_capwap_board_data(tvb, sub_msg_element_type_tree, offset);
        }
        break;

    case TYPE_WTP_DESCRIPTOR: /* WTP Descriptor (39) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_descriptor_max_radios, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_descriptor_radio_in_use, tvb, offset+5, 1, ENC_BIG_ENDIAN);
        if (global_capwap_draft_8_cisco == 0)
        {
            number_encrypt = tvb_get_guint8(tvb,offset+6);
            msg_element_type_item_flag = proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_descriptor_number_encrypt, tvb, offset+6, 1, ENC_BIG_ENDIAN);
            sub_msg_element_type_flag_tree = proto_item_add_subtree(msg_element_type_item_flag, ett_capwap);
            for (i=0; i < number_encrypt; i++) {
                dissect_capwap_encryption_capabilities(tvb, sub_msg_element_type_flag_tree, offset+4+3+i*3);
            }
            offset_end = offset + optlen -4;
            offset += 4 + 3 + number_encrypt * 3;
        }
        else
        {
            /*in Draft 8, there is only one "encryption_capabilities*/
            proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_descriptor_encrypt_capabilities, tvb, offset+6, 2, ENC_BIG_ENDIAN);
            offset_end = offset + optlen -4;
            offset += 6 + 2;
        }
        while (offset < offset_end) {
            offset += dissect_capwap_wtp_descriptor(tvb, sub_msg_element_type_tree, offset);
        }
        break;

    case TYPE_WTP_FALLBACK: /* WTP Fallback (40) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_fallback, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        break;

    case TYPE_WTP_FRAME_TUNNEL_MODE: /* WTP Frame Tunnel Mode (41) */
        msg_element_type_item_flag = proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode, tvb, offset+4, 1, ENC_NA);
        sub_msg_element_type_flag_tree = proto_item_add_subtree(msg_element_type_item_flag, ett_capwap);

        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode_n, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode_e, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode_l, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode_r, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        break;

    case TYPE_WTP_MAC_TYPE: /* WTP MAC Type (44) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_mac_type, tvb, offset+4, optlen, ENC_BIG_ENDIAN);
        break;

    case TYPE_WTP_NAME: /* WTP Name (45) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_name, tvb, offset+4, optlen, ENC_ASCII|ENC_NA);
        break;

    case TYPE_WTP_REBOOT_STATISTICS: /* WTP Reboot Statistics (48) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_reboot_statistics_reboot_count, tvb, offset+4, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_reboot_statistics_ac_initiated_count, tvb, offset+6, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_reboot_statistics_link_failure_count, tvb, offset+8, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_reboot_statistics_sw_failure_count, tvb, offset+10, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_reboot_statistics_hw_failure_count, tvb, offset+12, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_reboot_statistics_other_failure_count, tvb, offset+14, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_reboot_statistics_unknown_failure_count, tvb, offset+16, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_reboot_statistics_last_failure_type, tvb, offset+18, 1, ENC_BIG_ENDIAN);
        break;

    case IEEE80211_RATE_SET: /* ieee80211 Rate Set (1034) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_rate_set_radio_id, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_rate_set_rate_set, tvb, offset+5, optlen-1, ENC_NA);
        break;

    case IEEE80211_STATION_SESSION_KEY: /* ieee80211 Station Session Key (1038) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_station_session_key_mac, tvb, offset+4, 6, ENC_NA);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_station_session_key_flags, tvb, offset+10, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_station_session_key_flags_a, tvb, offset+10, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_station_session_key_flags_c, tvb, offset+10, 2, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_station_session_key_pairwire_tsc, tvb, offset+12, 6, ENC_NA);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_station_session_key_pairwire_rsc, tvb, offset+18, 6, ENC_NA);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_station_session_key_key, tvb, offset+24, optlen-24, ENC_NA);
        break;

    case IEEE80211_WTP_RADIO_INFORMATION: /* ieee80211 WTP Radio Information (1048) */
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_id, tvb, offset+4, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_reserved, tvb, offset+5, 3, ENC_NA);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_n, tvb, offset+8, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_g, tvb, offset+8, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_a, tvb, offset+8, 1, ENC_BIG_ENDIAN);
        proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_b, tvb, offset+8, 1, ENC_BIG_ENDIAN);
        break;

    default:
        /* No Default Action */
        break;
    }

    return 2+2+optlen;
}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_message_element(tvbuff_t *tvb, proto_tree *capwap_control_tree, guint offset)
{
    guint plen = 0, offset_end;
    proto_item *ti;
    proto_tree *capwap_message_element_tree;

    ti = proto_tree_add_item(capwap_control_tree, hf_capwap_message_element, tvb, offset, tvb_reported_length(tvb) - offset, ENC_NA);
    capwap_message_element_tree = proto_item_add_subtree(ti, ett_capwap);

    offset_end = tvb_reported_length(tvb);

    while (offset+plen < offset_end) {
        plen += dissect_capwap_message_element_type(tvb, capwap_message_element_tree, offset+plen);
    }

    return plen;
}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_data_keep_alive(tvbuff_t *tvb, packet_info *pinfo, proto_tree *capwap_data_tree, guint offset)
{
    guint16 len;
    guint plen = 0, offset_end;
    proto_item *ti;
    proto_tree *capwap_data_keep_alive_tree;

    ti = proto_tree_add_item(capwap_data_tree, hf_capwap_data_keep_alive, tvb, offset, tvb_reported_length(tvb), ENC_NA);
    capwap_data_keep_alive_tree = proto_item_add_subtree(ti, ett_capwap);

    ti = proto_tree_add_item(capwap_data_keep_alive_tree, hf_capwap_data_keep_alive_length, tvb, offset, 2, ENC_BIG_ENDIAN);
    len = tvb_get_ntohs(tvb, offset);
    if (len != tvb_reported_length(tvb))
        expert_add_info(pinfo, ti, &ei_capwap_data_keep_alive_length);

    plen += 2;

    offset_end = tvb_reported_length(tvb);

    while (offset+plen < offset_end) {
        plen += dissect_capwap_message_element_type(tvb, capwap_data_keep_alive_tree, offset+plen);
    }

    return plen;
}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_control_header(tvbuff_t *tvb, proto_tree *capwap_control_tree, guint offset, packet_info *pinfo)
{
    guint plen = 0;
    proto_item *ti, *ti_flag;
    proto_tree *capwap_control_header_tree;
    proto_tree *capwap_control_msg_type_tree;

    ti = proto_tree_add_item(capwap_control_tree, hf_capwap_control_header, tvb, offset, 8, ENC_NA);
    capwap_control_header_tree = proto_item_add_subtree(ti, ett_capwap);

    /* Message Type 32 bits */
    ti_flag = proto_tree_add_item(capwap_control_header_tree, hf_capwap_control_header_msg_type, tvb, offset, 4, ENC_BIG_ENDIAN);
    capwap_control_msg_type_tree = proto_item_add_subtree(ti_flag, ett_capwap);

    proto_tree_add_item(capwap_control_msg_type_tree, hf_capwap_control_header_msg_type_enterprise_nbr, tvb, offset, 3, ENC_BIG_ENDIAN);
    proto_tree_add_item(capwap_control_msg_type_tree, hf_capwap_control_header_msg_type_enterprise_specific, tvb, offset+3, 1, ENC_BIG_ENDIAN);

    col_append_fstr(pinfo->cinfo, COL_INFO, " - %s",val_to_str(tvb_get_guint8(tvb, offset+3),message_type,"Unknown Message Type (0x%02x)"));

    plen += 4;
    /* Sequence 8 bits */
    proto_tree_add_item(capwap_control_header_tree, hf_capwap_control_header_seq_number, tvb, offset+plen, 1, ENC_BIG_ENDIAN);
    plen += 1;

    /* Message Element Length 16 bits */
    proto_tree_add_item(capwap_control_header_tree, hf_capwap_control_header_msg_element_length, tvb, offset+plen, 2, ENC_BIG_ENDIAN);
    plen += 2;
    /* Flags 8 bits */
    proto_tree_add_item(capwap_control_header_tree, hf_capwap_control_header_flags, tvb, offset+plen, 1, ENC_BIG_ENDIAN);
    plen += 1;
    return plen;
}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_header(tvbuff_t *tvb, proto_tree *capwap_control_tree, guint offset, packet_info *pinfo, guint8 *payload_type, guint8 *payload_wbid, gboolean *fragment_is, gboolean *fragment_more, guint32 *fragment_id, guint32 *fragment_offset)
{
    guint plen = 0, hlen = 0;
    proto_item *ti, *ti_flag, *ti_len;
    proto_tree *capwap_header_tree;
    proto_tree *capwap_header_flags_tree;
    guint flags = 0;
    guint8 maclength, wirelesslength;
    guint align = 0;

    /* RFC 5415  HLEN:  A 5-bit field containing the length of the CAPWAP transport header in 4-byte words */
    /* As we display the preamble separately reduce the length by 1 */
    hlen = tvb_get_bits8(tvb, (offset+plen)*8, 5)*4-1;
    ti = proto_tree_add_item(capwap_control_tree, hf_capwap_header, tvb, offset+plen, hlen, ENC_NA);
    capwap_header_tree = proto_item_add_subtree(ti, ett_capwap);

    /* Header Length : 5 Bits */
    ti_len = proto_tree_add_item(capwap_header_tree, hf_capwap_header_hlen, tvb, offset+plen, 1, ENC_BIG_ENDIAN);
    proto_item_append_text(ti_len, " (%d)",hlen+1);
    /* Radio ID : 5 Bits */
    proto_tree_add_item(capwap_header_tree, hf_capwap_header_rid, tvb, offset+plen, 3, ENC_BIG_ENDIAN);

    /* Wireless Binding ID : 5 Bits */
    proto_tree_add_item(capwap_header_tree, hf_capwap_header_wbid, tvb, offset+plen, 3, ENC_BIG_ENDIAN);

    /* WBid of Payload (for CAPWAP Data Packet) */
    *payload_wbid = tvb_get_bits8(tvb, (offset+plen)*8+10, 5);

    /* Flags : 9 Bits */
    flags = tvb_get_bits16(tvb, (offset+plen)*8+15, 9, ENC_BIG_ENDIAN);
    ti_flag = proto_tree_add_item(capwap_header_tree, hf_capwap_header_flags, tvb, offset+plen, 3, ENC_BIG_ENDIAN);
    capwap_header_flags_tree = proto_item_add_subtree(ti_flag, ett_capwap);

    proto_tree_add_item(capwap_header_flags_tree, hf_capwap_header_flags_t, tvb, offset+plen, 3, ENC_BIG_ENDIAN);
    proto_tree_add_item(capwap_header_flags_tree, hf_capwap_header_flags_f, tvb, offset+plen, 3, ENC_BIG_ENDIAN);
    proto_tree_add_item(capwap_header_flags_tree, hf_capwap_header_flags_l, tvb, offset+plen, 3, ENC_BIG_ENDIAN);
    proto_tree_add_item(capwap_header_flags_tree, hf_capwap_header_flags_w, tvb, offset+plen, 3, ENC_BIG_ENDIAN);
    proto_tree_add_item(capwap_header_flags_tree, hf_capwap_header_flags_m, tvb, offset+plen, 3, ENC_BIG_ENDIAN);
    proto_tree_add_item(capwap_header_flags_tree, hf_capwap_header_flags_k, tvb, offset+plen, 3, ENC_BIG_ENDIAN);
    proto_tree_add_item(capwap_header_flags_tree, hf_capwap_header_flags_r, tvb, offset+plen, 3, ENC_BIG_ENDIAN);

    /* Fragment ??*/
    *fragment_is = ((flags & 0x80) == 0x80) ? TRUE : FALSE;
    *fragment_more = ((flags &0x40) == 0x40) ? FALSE : TRUE;

    /* Type of Payload (for CAPWAP Data Packet), use 0xff for Keep-Alive */
    if (flags &0x08 /* data channel Keep-Alive packet */) {
        col_append_str(pinfo->cinfo, COL_INFO, " Keep-Alive");
        *payload_type = 0xff;
    } else
        *payload_type = tvb_get_bits8(tvb, (offset+plen)*8+15,1);

    plen += 3;

    /* Fragment ID : 16 Bits */
    proto_tree_add_item(capwap_header_tree, hf_capwap_header_fragment_id, tvb, offset+plen, 2, ENC_BIG_ENDIAN);
    *fragment_id = (guint32)tvb_get_ntohs(tvb, offset+plen);
    plen += 2;

    /* Fragment offset : 13 Bits */
    proto_tree_add_item(capwap_header_tree, hf_capwap_header_fragment_offset, tvb, offset+plen, 2, ENC_BIG_ENDIAN);
    *fragment_offset = 8 * (guint32)tvb_get_bits16(tvb, (offset+plen)*8, 13, ENC_BIG_ENDIAN);

    /* Reserved 3 Bits */
    proto_tree_add_item(capwap_header_tree, hf_capwap_header_reserved, tvb, offset+plen+1, 1, ENC_BIG_ENDIAN);
    plen += 2;
    /* Optionnal Headers */
    if (flags & 0x10 /* Radio MAC address */) {
        maclength=tvb_get_guint8(tvb, offset+plen);
        proto_tree_add_item(capwap_header_tree, hf_capwap_header_mac_length, tvb, offset+plen, 1, ENC_BIG_ENDIAN);
        plen += 1;
        if (maclength == 6) {
            proto_tree_add_item(capwap_header_tree, hf_capwap_header_mac_eui48, tvb, offset+plen, maclength, ENC_NA);

        } else if (maclength == 8) {
            proto_tree_add_item(capwap_header_tree, hf_capwap_header_mac_eui64, tvb, offset+plen, maclength, ENC_BIG_ENDIAN);
        } else {
            proto_tree_add_item(capwap_header_tree, hf_capwap_header_mac_data, tvb, offset+plen, maclength, ENC_NA);
        }
        plen += maclength;
        /* 4 Bytes Alignment ? */
        align = 4-((offset+plen)%4);
        if (align != 4)
        {
            proto_tree_add_item(capwap_header_tree, hf_capwap_header_padding, tvb, offset+plen, align, ENC_NA);
            plen += align;
        }
    }
    if (flags & 0x20 /* Wireless specific information */) {
        wirelesslength=tvb_get_guint8(tvb, offset+plen);

        /* in Draft 8, the WBid is add in Wireless Specific Information*/
        if (global_capwap_draft_8_cisco == 1)
        {
            plen += 1;
            wirelesslength = 4;
        }
        proto_tree_add_item(capwap_header_tree, hf_capwap_header_wireless_length, tvb, offset+plen, 1, ENC_BIG_ENDIAN);
        plen += 1;
        proto_tree_add_item(capwap_header_tree, hf_capwap_header_wireless_data, tvb, offset+plen, wirelesslength, ENC_NA);

        /* Optional Wireless Specific Information for ieee80211 (wbid = 1) Section 4 of RFC5416 */
        if (*payload_wbid == 1)
        {
            dissect_capwap_data_message_bindings_ieee80211(tvb, capwap_header_tree, offset+plen, pinfo);
        }

        plen += wirelesslength;
        /* 4 Bytes Alignment ? */
        align = 4-((offset+plen)%4);
        if (align != 4)
        {
            proto_tree_add_item(capwap_header_tree, hf_capwap_header_padding, tvb, offset+plen, align, ENC_NA);
            plen += align;
        }
    }
    if ((plen != hlen) && global_capwap_draft_8_cisco == 0)
    {
        expert_add_info_format(pinfo, ti_len, &ei_capwap_header_length_bad, "Wrong calculate length (%d) =! header length (%d) ! (May be try to use Cisco Wireless Controller Support Preference ?)", plen, hlen);
    }
    return hlen;
}

/* Returns the number of bytes consumed by this option. */
static int
dissect_capwap_preamble(tvbuff_t *tvb, proto_tree *capwap_control_tree, guint offset, guint8 *type_header)
{
    guint plen = 0;
    proto_item *ti;
    proto_tree *capwap_preamble_tree;

    ti = proto_tree_add_item(capwap_control_tree, hf_capwap_preamble, tvb, offset+plen, -1, ENC_NA);
    capwap_preamble_tree = proto_item_add_subtree(ti, ett_capwap);

    proto_tree_add_item(capwap_preamble_tree, hf_capwap_preamble_version, tvb, offset+plen, 1, ENC_NA);
    proto_tree_add_item(capwap_preamble_tree, hf_capwap_preamble_type, tvb, offset+plen, 1, ENC_NA);
    *type_header = tvb_get_guint8(tvb, offset+plen) & 0x0F;
    plen++;
    /* DTLS Header ? */
    if (*type_header == 1) {
        proto_tree_add_item(capwap_preamble_tree, hf_capwap_preamble_reserved, tvb, offset+plen, 3, ENC_BIG_ENDIAN);
        plen +=3;
    }
    proto_item_set_len(ti, plen);
    return plen;
}

/* Code to actually dissect the packets */
static int
dissect_capwap_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
    /* Set up structures needed to add the protocol subtree and manage it */
    proto_item *ti;
    proto_tree *capwap_control_tree;
    guint offset = 0;
    tvbuff_t *next_tvb = NULL;
    guint8 type_header;
    guint8 payload_type;
    guint8 payload_wbid;
    gboolean fragment_is;
    gboolean fragment_more;
    guint32 fragment_id;
    guint32 fragment_offset;
    fragment_head *frag_msg = NULL;
    gboolean save_fragmented;

    /* Make entries in Protocol column and Info column on summary display */
    col_set_str(pinfo->cinfo, COL_PROTOCOL, "CAPWAP");
    col_set_str(pinfo->cinfo, COL_INFO, "CAPWAP-Control");

    ti = proto_tree_add_item(tree, proto_capwap, tvb, 0, -1, ENC_NA);
    capwap_control_tree = proto_item_add_subtree(ti, ett_capwap);

    /* CAPWAP Preamble */
    offset += dissect_capwap_preamble(tvb, capwap_control_tree, offset, &type_header);

    if (type_header == 1) {
        next_tvb = tvb_new_subset_remaining (tvb, offset);
        call_dissector(dtls_handle, next_tvb, pinfo, tree);
        return offset;
    }

    /* CAPWAP Header */
    offset += dissect_capwap_header(tvb, capwap_control_tree, offset, pinfo, &payload_type, &payload_wbid, &fragment_is, &fragment_more, &fragment_id, &fragment_offset );

    /* CAPWAP Reassemble */
    save_fragmented = pinfo->fragmented;

    if (global_capwap_reassemble && fragment_is)
    {
        const int len_rem = tvb_length_remaining(tvb, offset);
        if (len_rem <= 0)
            return offset;

        pinfo->fragmented = TRUE;

        frag_msg = fragment_add_check(&capwap_reassembly_table,
                                      tvb, offset, pinfo, fragment_id, NULL,
                                      fragment_offset,
                                      len_rem,
                                      fragment_more);

        next_tvb = process_reassembled_data(tvb, offset, pinfo,
                                            "Reassembled CAPWAP", frag_msg,
                                            &capwap_frag_items, NULL, tree);

        if (next_tvb == NULL)
        { /* make a new subset */
            next_tvb = tvb_new_subset_remaining(tvb, offset);
            call_dissector(data_handle, next_tvb, pinfo, tree);
            col_append_fstr(pinfo->cinfo, COL_INFO, " (Fragment ID: %u, Fragment Offset: %u)", fragment_id, fragment_offset);
        }
        else
        {
            /* CAPWAP Control Header */
            offset = dissect_capwap_control_header(next_tvb, capwap_control_tree, 0, pinfo);

            /* CAPWAP Message Element */
            offset += dissect_capwap_message_element(next_tvb, capwap_control_tree, offset);
            col_append_fstr(pinfo->cinfo, COL_INFO, " (Reassembled, Fragment ID: %u)", fragment_id);
        }
    }
    else
    {
        /* CAPWAP Control Header */
        offset += dissect_capwap_control_header(tvb, capwap_control_tree, offset, pinfo);

        /* CAPWAP Message Element */
        offset += dissect_capwap_message_element(tvb, capwap_control_tree, offset);
    }
    pinfo->fragmented = save_fragmented;
    return offset;
}

/* Code to actually dissect the packets */
static void
dissect_capwap_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
    /* Set up structures needed to add the protocol subtree and manage it */
    proto_item *ti;
    proto_tree *capwap_data_tree;
    guint offset = 0;
    tvbuff_t *next_tvb;
    guint8 type_header;
    guint8 payload_type;
    guint8 payload_wbid;
    gboolean fragment_is;
    gboolean fragment_more;
    guint32 fragment_id;
    guint32 fragment_offset;
    fragment_head *frag_msg = NULL;
    gboolean save_fragmented;

    /* Make entries in Protocol column and Info column on summary display */
    col_set_str(pinfo->cinfo, COL_PROTOCOL, "CAPWAP");
    col_set_str(pinfo->cinfo, COL_INFO, "CAPWAP-Data");

    ti = proto_tree_add_item(tree, proto_capwap, tvb, 0, -1, ENC_NA);
    capwap_data_tree = proto_item_add_subtree(ti, ett_capwap);

    /* CAPWAP Preamble */
    offset += dissect_capwap_preamble(tvb, capwap_data_tree, offset, &type_header);

    if (type_header == 1) {
        next_tvb = tvb_new_subset_remaining (tvb, offset);
        call_dissector(dtls_handle, next_tvb, pinfo, tree);
        return;
    }

    /* CAPWAP Header */
    offset += dissect_capwap_header(tvb, capwap_data_tree, offset, pinfo, &payload_type, &payload_wbid, &fragment_is, &fragment_more, &fragment_id, &fragment_offset);

    /* CAPWAP Reassemble */
    save_fragmented = pinfo->fragmented;

    if (global_capwap_reassemble && fragment_is)
    {
        gint len_rem = tvb_length_remaining(tvb, offset);
        if (len_rem <= 0)
            return;

        pinfo->fragmented = TRUE;

        frag_msg = fragment_add_check(&capwap_reassembly_table,
                                      tvb, offset, pinfo, fragment_id, NULL,
                                      fragment_offset,
                                      len_rem,
                                      fragment_more);

        next_tvb = process_reassembled_data(tvb, offset, pinfo,
                                            "Reassembled CAPWAP", frag_msg,
                                            &capwap_frag_items, NULL, tree);

        if (next_tvb == NULL)
        { /* make a new subset */
            next_tvb = tvb_new_subset_remaining(tvb, offset);
            call_dissector(data_handle,next_tvb, pinfo, tree);
            col_append_fstr(pinfo->cinfo, COL_INFO, " (Fragment ID: %u, Fragment Offset: %u)", fragment_id, fragment_offset);
        }
        else
        {
            col_append_fstr(pinfo->cinfo, COL_INFO, " (Reassembled, Fragment ID: %u)", fragment_id);
        }
    }
    else
    {
        next_tvb = tvb_new_subset_remaining (tvb, offset);
    }

    /* CAPWAP Data Payload */
    if (payload_type == 0) {
        /* IEEE 802.3 Frame */
        call_dissector(ieee8023_handle, next_tvb, pinfo, tree);
    }
    else if (payload_type == 0xff) {
        /* CAPWAP Keep-Alive Payload */
        dissect_capwap_data_keep_alive(next_tvb, pinfo, capwap_data_tree, 0);
    }
    else
    {
        switch (payload_wbid) {
        case 0: /* Reserved - Cisco seems to use this instead of 1 */
            /* It seems that just calling ieee80211_handle is not
             * quite enough to get this right, so call data_handle
             * for now:
             */
            call_dissector(data_handle, next_tvb, pinfo, tree);
            break;
        case 1: /* IEEE 802.11 */
            call_dissector(global_capwap_swap_frame_control ? ieee80211_bsfc_handle : ieee80211_handle, next_tvb, pinfo, tree);
            break;
        default: /* Unknown Data */
            call_dissector(data_handle, next_tvb, pinfo, tree);
            break;
        }
    }
    pinfo->fragmented = save_fragmented;
    }

void
proto_register_capwap_control(void)
{
    module_t *capwap_module;

    static hf_register_info hf[] = {
        /* Preamble */
        { &hf_capwap_preamble,
        { "Preamble", "capwap.preamble",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_preamble_version,
        { "Version", "capwap.preamble.version",
            FT_UINT8, BASE_DEC, NULL, 0xF0,
            "Version of CAPWAP", HFILL }},
        { &hf_capwap_preamble_type,
        { "Type", "capwap.preamble.type",
            FT_UINT8, BASE_DEC, VALS(type_header_vals), 0x0F,
            "Type of Payload", HFILL }},
        { &hf_capwap_preamble_reserved,
        { "Reserved", "capwap.preamble.reserved",
            FT_UINT24, BASE_DEC, NULL, 0x0,
            NULL, HFILL }},
        /* CAPWAP Header */
        { &hf_capwap_header,
        { "Header", "capwap.header",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_header_hlen,
        { "Header Length", "capwap.header.length",
            FT_UINT24, BASE_DEC, NULL, 0xF80000,
            "Length of the CAPWAP transport header in 4-byte words (similar to IP header length)", HFILL }},
        { &hf_capwap_header_rid,
        { "Radio ID", "capwap.header.rid",
            FT_UINT24, BASE_DEC, NULL, 0x07C000,
            NULL, HFILL }},
        { &hf_capwap_header_wbid,
        { "Wireless Binding ID", "capwap.header.wbid",
            FT_UINT24, BASE_DEC, VALS(type_wbid), 0x003E00,
            NULL, HFILL }},
        { &hf_capwap_header_flags,
        { "Header Flags", "capwap.header.flags",
            FT_UINT24, BASE_HEX, NULL, 0x0001FF,
            NULL, HFILL }},
        { &hf_capwap_header_flags_t,
        { "Payload Type", "capwap.header.flags.t",
            FT_BOOLEAN, 24, TFS(&flag_type_t), 0x0000100,
            NULL, HFILL }},
        { &hf_capwap_header_flags_f,
        { "Fragment", "capwap.header.flags.f",
            FT_BOOLEAN, 24, TFS(&flag_type_f), 0x000080,
            NULL, HFILL }},
        { &hf_capwap_header_flags_l,
        { "Last Fragment", "capwap.header.flags.l",
            FT_BOOLEAN, 24, TFS(&flag_type_l), 0x000040,
            NULL, HFILL }},
        { &hf_capwap_header_flags_w,
        { "Wireless header", "capwap.header.flags.w",
            FT_BOOLEAN, 24, TFS(&flag_type_w), 0x000020,
            NULL, HFILL }},
        { &hf_capwap_header_flags_m,
        { "Radio MAC header", "capwap.header.flags.m",
            FT_BOOLEAN, 24, TFS(&flag_type_m), 0x000010,
            NULL, HFILL }},
        { &hf_capwap_header_flags_k,
        { "Keep-Alive", "capwap.header.flags.k",
            FT_BOOLEAN, 24, TFS(&flag_type_k), 0x000008,
            NULL, HFILL }},
        { &hf_capwap_header_flags_r,
        { "Reserved", "capwap.header.flags.r",
            FT_BOOLEAN, 24, TFS(&tfs_set_notset), 0x000007,
            NULL, HFILL }},
        { &hf_capwap_header_fragment_id,
        { "Fragment ID", "capwap.header.fragment.id",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_fragment_offset,
        { "Fragment Offset", "capwap.header.fragment.offset",
            FT_UINT16, BASE_DEC, NULL, 0xFFF8,
            NULL, HFILL }},
        { &hf_capwap_header_reserved,
        { "Reserved", "capwap.header.fragment.reserved",
            FT_UINT16, BASE_DEC, NULL, 0x0007,
            NULL, HFILL }},
        { &hf_capwap_header_mac_length,
        { "MAC length", "capwap.header.mac.length",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_mac_eui48,
        { "MAC address", "capwap.header.mac.eui48",
            FT_ETHER, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_mac_eui64,
        { "MAC address", "capwap.header.mac.eui64",
            FT_EUI64, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_mac_data,
        { "MAC address", "capwap.header.mac.data",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_length,
        { "Wireless length", "capwap.header.wireless.length",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_data,
        { "Wireless data", "capwap.header.wireless.data",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_data_ieee80211_fi,
        { "Wireless data ieee80211 Frame Info", "capwap.header.wireless.data.ieee80211.fi",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_data_ieee80211_fi_rssi,
        { "Wireless data ieee80211 RSSI (dBm)", "capwap.header.wireless.data.ieee80211.fi.rssi",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_data_ieee80211_fi_snr,
        { "Wireless data ieee80211 SNR (dB)", "capwap.header.wireless.data.ieee80211.fi.snr",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_data_ieee80211_fi_data_rate,
        { "Wireless data ieee80211 Data Rate (Mbps)", "capwap.header.wireless.data.ieee80211.fi.data_rate",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_data_ieee80211_dest_wlan,
        { "Wireless data ieee80211 Destination WLANs", "capwap.header.wireless.data.ieee80211.dw",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_data_ieee80211_dw_wlan_id_bitmap,
        { "Wireless data ieee80211 Destination Wlan Id bitmap",
        "capwap.header.wireless.data.ieee80211.dw.wlan_id_bitmap",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_wireless_data_ieee80211_dw_reserved,
        { "Wireless data ieee80211 Destination Wlan reserved", "capwap.header.wireless.data.ieee80211.dw.reserved",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_header_padding,
        { "Padding for 4 Byte Alignement", "capwap.header.padding",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},

        /* CAPWAP Control Header Message */

        { &hf_capwap_control_header,
        { "Control Header", "capwap.control.header",
            FT_NONE, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_control_header_msg_type,
        { "Message Type", "capwap.control.header.message_type",
            FT_UINT32, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_control_header_msg_type_enterprise_nbr,
        { "Message Type (Enterprise Number)", "capwap.control.header.message_type.enterprise_number",
            FT_UINT32, BASE_DEC|BASE_EXT_STRING, &sminmpec_values_ext, 0x00,
            NULL, HFILL }},
        { &hf_capwap_control_header_msg_type_enterprise_specific,
        { "Message Type (Enterprise Specific)", "capwap.control.header.message_type.enterprise_specific",
            FT_UINT8, BASE_DEC, VALS(message_type), 0x00,
            NULL, HFILL }},
        { &hf_capwap_control_header_seq_number,
        { "Sequence Number", "capwap.control.header.sequence_number",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_control_header_msg_element_length,
        { "Message Element Length", "capwap.control.header.message_element_length",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_control_header_flags,
        { "Flags", "capwap.control.header.flags",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},

        /* CAPWAP Protocol Message Elements */

        { &hf_capwap_message_element,
        { "Message Element", "capwap.message_element",
            FT_NONE, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element,
        { "Type", "capwap.message_element",
            FT_NONE, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type,
        { "Type", "capwap.message_element.type",
            FT_UINT16, BASE_DEC, VALS(message_element_type_vals), 0x00,
            "CAPWAP Message Element type", HFILL }},
        { &hf_capwap_msg_element_length,
        { "Length", "capwap.message_element.length",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            "CAPWAP Message Element length", HFILL }},
        { &hf_capwap_msg_element_value,
        { "Value", "capwap.message_element.value",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            "CAPWAP Message Element value", HFILL }},

        /* CAPWAP Protocol Message Element Type */

        /* AC Descriptor */
        { &hf_capwap_msg_element_type_ac_descriptor_stations,
        { "Stations", "capwap.control.message_element.ac_descriptor.stations",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_limit,
        { "Limit Stations", "capwap.control.message_element.ac_descriptor.limit",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_active_wtp,
        { "Active WTPs", "capwap.control.message_element.ac_descriptor.active_wtp",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_max_wtp,
        { "Max WTPs", "capwap.control.message_element.ac_descriptor.max_wtp",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        /* AC Descriptor Security Flags... */
        { &hf_capwap_msg_element_type_ac_descriptor_security,
        { "Security Flags", "capwap.control.message_element.ac_descriptor.security",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_security_s,
        { "AC supports the pre-shared", "capwap.control.message_element.ac_descriptor.security.s",
            FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x04,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_security_x,
        { "AC supports X.509 Certificate", "capwap.control.message_element.ac_descriptor.security.x",
            FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x02,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_security_r,
        { "Reserved", "capwap.control.message_element.ac_descriptor.security.r",
            FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0xF9,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_ac_descriptor_rmac_field,
        { "R-MAC Field", "capwap.control.message_element.ac_descriptor.rmac_field",
            FT_UINT8, BASE_DEC, VALS(rmac_field_vals), 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_reserved,
        { "Reserved", "capwap.control.message_element.ac_descriptor.reserved",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        /* AC Descriptor DTLS Policy Flags... */
        { &hf_capwap_msg_element_type_ac_descriptor_dtls_policy,
        { "DTLS Policy Flags", "capwap.control.message_element.ac_descriptor.dtls_policy",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_dtls_policy_d,
        { "DTLS-Enabled Data Channel Supported", "capwap.control.message_element.ac_descriptor.dtls_policy.d",
            FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x04,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_dtls_policy_c,
        { "Clear Text Data Channel Supported", "capwap.control.message_element.ac_descriptor.dtls_policy.c",
            FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x02,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_descriptor_dtls_policy_r,
        { "Reserved", "capwap.control.message_element.ac_descriptor.dtls_policy.r",
            FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0xF9,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_ac_information,
        { "AC Information", "capwap.control.message_element.ac_information",
            FT_NONE, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_ac_information_vendor,
        { "AC Information Vendor", "capwap.control.message_element.ac_information.vendor",
            FT_UINT32, BASE_DEC|BASE_EXT_STRING, &sminmpec_values_ext, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_information_type,
        { "AC Information Type", "capwap.control.message_element.ac_information.type",
            FT_UINT16, BASE_DEC, VALS(ac_information_type_vals), 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_information_length,
        { "AC Information Length", "capwap.control.message_element.ac_information.length",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_ac_information_value,
        { "AC Information Value", "capwap.control.message_element.ac_information.value",
            FT_BYTES, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_information_hardware_version,
        { "AC Hardware Version", "capwap.control.message_element.ac_information.hardware_version",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_information_software_version,
        { "AC Software Version", "capwap.control.message_element.ac_information.software_version",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_ipv4_list,
        { "AC IPv4 List", "capwap.control.message_element.message_element.ac_ipv4_list",
            FT_IPv4, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_ipv6_list,
        { "AC IPv6 List", "capwap.control.message_element.message_element.ac_ipv6_list",
            FT_IPv6, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        /* CAPWAP Control IPvX Address*/
        { &hf_capwap_msg_element_type_capwap_control_ipv4,
        { "CAPWAP Control IP Address", "capwap.control.message_element.message_element.capwap_control_ipv4",
            FT_IPv4, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_capwap_control_ipv6,
        { "CAPWAP Control IP Address", "capwap.control.message_element.message_element.capwap_control_ipv6",
            FT_IPv6, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_capwap_control_wtp_count,
        { "CAPWAP Control WTP Count", "capwap.control.message_element.capwap_control_wtp_count",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_capwap_timers_discovery,
        { "CAPWAP Timers Discovery (Sec)", "capwap.control.message_element.capwap_timers_discovery",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_capwap_timers_echo_request,
        { "CAPWAP Timers Echo Request (Sec)", "capwap.control.message_element.capwap_timers_echo_request",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_decryption_error_report_period_radio_id,
        { "Decryption Error Report Period Radio ID", "capwap.control.message_element.decryption_error_report_period.radio_id",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_decryption_error_report_period_interval,
        { "Decryption Error Report Report Interval (Sec)", "capwap.control.message_element.decryption_error_report_period.interval",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_name,
        { "AC Name", "capwap.control.message_element.ac_name",
            FT_STRING, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ac_name_with_priority,
        { "AC Name Priority", "capwap.control.message_element.ac_name_with_priority",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_discovery_type,
        { "Discovery Type", "capwap.control.message_element.discovery_type",
            FT_UINT8, BASE_DEC, VALS(discovery_type_vals), 0x00,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_idle_timeout,
        { "Idle Timeout (Sec)", "capwap.control.message_element.idle_timeout",
            FT_UINT32, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_location_data,
        { "Location Data", "capwap.control.message_element.location_data",
            FT_STRING, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_maximum_message_length,
        { "Maximum Message Length", "capwap.control.message_element.maximum_message_length",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_radio_admin_id,
        { "Radio Administrative ID", "capwap.control.message_element.radio_admin.id",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_radio_admin_state,
        { "Radio Administrative State", "capwap.control.message_element.radio_admin.state",
            FT_UINT8, BASE_DEC, VALS(radio_admin_state_vals), 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_radio_op_state_radio_id,
        { "Radio Operational ID", "capwap.control.message_element.radio_op_state.radio_id",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_radio_op_state_radio_state,
        { "Radio Operational State", "capwap.control.message_element.radio_op_state.radio_state",
            FT_UINT8, BASE_DEC, VALS(radio_op_state_vals), 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_radio_op_state_radio_cause,
        { "Radio Operational Cause", "capwap.control.message_element.radio_op_state.radio_cause",
            FT_UINT8, BASE_DEC, VALS(radio_op_cause_vals), 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_result_code,
        { "Result Code", "capwap.control.message_element.result_code",
            FT_UINT32, BASE_DEC, VALS(result_code_vals), 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_session_id,
        { "Session ID", "capwap.control.message_element.session_id",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_statistics_timer,
        { "Statistics Timer (Sec)", "capwap.control.message_element.statistics_timer",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_vsp_vendor_identifier,
        { "Vendor Identifier", "capwap.control.message_element.vsp.vendor_identifier",
            FT_UINT32, BASE_DEC|BASE_EXT_STRING, &sminmpec_values_ext, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_vsp_vendor_element_id,
        { "Vendor Element ID", "capwap.control.message_element.vsp.vendor_element_id",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_vsp_vendor_data,
        { "Vendor Data", "capwap.control.message_element.vsp.vendor_data",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_wtp_board_data,
        { "WTP Board Data", "capwap.control.message_element.wtp_board_data",
            FT_NONE, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_board_data_vendor,
        { "WTP Board Data Vendor", "capwap.control.message_element.wtp_board_data.vendor",
            FT_UINT32, BASE_DEC|BASE_EXT_STRING, &sminmpec_values_ext, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_board_data_type,
        { "Board Data Type", "capwap.control.message_element.wtp_board_data.type",
            FT_UINT16, BASE_DEC, VALS(board_data_type_vals), 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_board_data_length,
        { "Board Data Length", "capwap.control.message_element.wtp_board_data.length",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_board_data_value,
        { "Board Data Value", "capwap.control.message_element.wtp_board_data.value",
            FT_BYTES, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_wtp_board_data_wtp_model_number,
        { "WTP Model Number", "capwap.control.message_element.wtp_board_data.wtp_model_number",
            FT_STRING, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_board_data_wtp_serial_number,
        { "WTP Serial Number", "capwap.control.message_element.wtp_board_data.wtp_serial_number",
            FT_STRING, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_board_data_wtp_board_id,
        { "WTP Board ID", "capwap.control.message_element.wtp_board_data.wtp_board_id",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_board_data_wtp_board_revision,
        { "WTP Board Revision", "capwap.control.message_element.wtp_board_data.wtp_board_revision",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_board_data_base_mac_address,
        { "Base Mac Address", "capwap.control.message_element.wtp_board_data.base_mac_address",
            FT_ETHER, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_wtp_descriptor_max_radios,
        { "Max Radios", "capwap.control.message_element.wtp_descriptor.max_radios",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_radio_in_use,
        { "Radio in use", "capwap.control.message_element.wtp_descriptor.radio_in_use",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_number_encrypt,
        { "Encryption Capabilities (Number)", "capwap.control.message_element.wtp_descriptor.number_encrypt",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_encrypt,
        { "Encryption Capabilities", "capwap.control.message_element.wtp_descriptor.encrypt",
            FT_NONE, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_encrypt_reserved,
        { "Reserved (Encrypt)", "capwap.control.message_element.wtp_descriptor.encrypt_reserved",
            FT_UINT8, BASE_DEC, NULL, 0xE0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_encrypt_wbid,
        { "Encrypt WBID", "capwap.control.message_element.wtp_descriptor.encrypt_wbid",
            FT_UINT8, BASE_DEC, VALS(type_wbid), 0x1F,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_encrypt_capabilities,
        { "Encryption Capabilities", "capwap.control.message_element.wtp_descriptor.encrypt_capabilities",
            FT_UINT16, BASE_DEC, NULL, 0x00,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_wtp_descriptor,
        { "WTP Descriptor", "capwap.control.message_element.wtp_descriptor",
            FT_NONE, BASE_NONE, NULL, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_vendor,
        { "WTP Descriptor Vendor", "capwap.control.message_element.wtp_descriptor.vendor",
            FT_UINT32, BASE_DEC|BASE_EXT_STRING, &sminmpec_values_ext, 0x00,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_type,
        { "Descriptor Type", "capwap.control.message_element.wtp_descriptor.type",
            FT_UINT16, BASE_DEC, VALS(wtp_descriptor_type_vals), 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_length,
        { "Descriptor Length", "capwap.control.message_element.wtp_descriptor.length",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_value,
        { "Descriptor Value", "capwap.control.message_element.wtp_descriptor.value",
            FT_BYTES, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_hardware_version,
        { "WTP Hardware Version", "capwap.control.message_element.wtp_descriptor.hardware_version",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_active_software_version,
        { "WTP Active Software Version", "capwap.control.message_element.wtp_descriptor.active_software_version",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_boot_version,
        { "WTP Boot Version", "capwap.control.message_element.wtp_descriptor.boot_version",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_descriptor_other_software_version,
        { "WTP Other Software Version", "capwap.control.message_element.wtp_descriptor.other_software_version",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_fallback,
        { "WTP Fallback", "capwap.control.message_element.wtp_fallback",
            FT_UINT8, BASE_DEC, VALS(wtp_fallback_vals), 0x0,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_wtp_frame_tunnel_mode,
        { "WTP Frame Tunnel Mode", "capwap.control.message_element.wtp_frame_tunnel_mode",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_frame_tunnel_mode_n,
        { "Native Frame Tunnel Mode", "capwap.control.message_element.wtp_frame_tunnel_mode.n",
            FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x08,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_frame_tunnel_mode_e,
        { "802.3 Frame Tunnel Mode", "capwap.control.message_element.wtp_frame_tunnel_mode.e",
            FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x04,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_frame_tunnel_mode_l,
        { "Local Bridging", "capwap.control.message_element.wtp_frame_tunnel_mode.l",
            FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x02,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_frame_tunnel_mode_r,
        { "Reserved", "capwap.control.message_element.wtp_frame_tunnel_mode.r",
            FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0xF1,
            NULL, HFILL }},

        { &hf_capwap_msg_element_type_wtp_mac_type,
            { "WTP MAC Type", "capwap.control.message_element.wtp_mac_type",
            FT_UINT8, BASE_DEC, VALS(wtp_mac_vals), 0x0,
            "The MAC mode of operation supported by the WTP", HFILL }},
        { &hf_capwap_msg_element_type_wtp_name,
            { "WTP Name", "capwap.control.message_element.wtp_name",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_wtp_reboot_statistics_reboot_count,
            { "Reboot  Count", "capwap.control.message_element.wtp_reboot_statistics.reboot_count",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            "The number of reboots that have occurred due to a WTP crash", HFILL }},
        { &hf_capwap_msg_element_type_wtp_reboot_statistics_ac_initiated_count,
            { "AC Initiated Count", "capwap.control.message_element.wtp_reboot_statistics.ac_initiated_count",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            "The number of reboots that have occurred at the request of a CAPWAP protocol message", HFILL }},
        { &hf_capwap_msg_element_type_wtp_reboot_statistics_link_failure_count,
            { "Link Failure Count", "capwap.control.message_element.wtp_reboot_statistics.link_failure_count",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            "The number of times that a CAPWAP protocol connection with an AC has failed due to link failure", HFILL }},
        { &hf_capwap_msg_element_type_wtp_reboot_statistics_sw_failure_count,
            { "SW Failure Count", "capwap.control.message_element.wtp_reboot_statistics.sw_failure_count",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            "The number of times that a CAPWAP protocol connection with an AC has failed due to software-related reasons", HFILL }},
        { &hf_capwap_msg_element_type_wtp_reboot_statistics_hw_failure_count,
            { "HW Failure Count", "capwap.control.message_element.wtp_reboot_statistics.hw_failure_count",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            "The number of times that a CAPWAP protocol connection with an AC has failed due to hardware-related reasons", HFILL }},
        { &hf_capwap_msg_element_type_wtp_reboot_statistics_other_failure_count,
            { "Other Failure Count", "capwap.control.message_element.wtp_reboot_statistics.other_failure_count",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            "The number of times that a CAPWAP protocol connection with an AC has failed due to known reasons, other than AC initiated, link, SW or HW failure", HFILL }},
        { &hf_capwap_msg_element_type_wtp_reboot_statistics_unknown_failure_count,
            { "Unknown Failure Count", "capwap.control.message_element.wtp_reboot_statistics.unknown_failure_count",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            "The number of times that a CAPWAP protocol connection with an AC has failed for unknown reasons", HFILL }},
        { &hf_capwap_msg_element_type_wtp_reboot_statistics_last_failure_type,
            { "Last Failure Type", "capwap.control.message_element.wtp_reboot_statistics.last_failure_type",
            FT_UINT8, BASE_DEC, VALS(last_failure_type_vals), 0x0,
            "The failure type of the most recent WTP failure", HFILL }},

        { &hf_capwap_msg_element_type_ieee80211_rate_set_radio_id,
            { "Radio ID", "capwap.control.message_element.ieee80211_rate_set.radio_id",
            FT_UINT8, BASE_DEC, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_rate_set_rate_set,
            { "Rate Set", "capwap.control.message_element.ieee80211_rate_set.rate_set",
            FT_BYTES, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_station_session_key_mac,
            { "Mac Address", "capwap.control.message_element.ieee80211_station_session_key.mac",
            FT_ETHER, BASE_NONE, NULL, 0x0,
            "The station's MAC Address", HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_station_session_key_flags,
            { "Flags", "capwap.control.message_element.ieee80211_station_session_key.flags",
            FT_UINT16, BASE_DEC, NULL, 0x3FFF,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_station_session_key_flags_a,
            { "Flag A", "capwap.control.message_element.ieee80211_station_session_key.flags_a",
            FT_BOOLEAN, 1, NULL, 0x2000,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_station_session_key_flags_c,
            { "Flag C", "capwap.control.message_element.ieee80211_station_session_key.flags_c",
            FT_BOOLEAN, 1, NULL, 0x1000,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_station_session_key_pairwire_tsc,
            { "Pairwise TSC", "capwap.control.message_element.ieee80211_station_session_key.pairwire_tsc",
            FT_BYTES, BASE_NONE, NULL, 0x0,
            "Transmit Sequence Counter (TSC)", HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_station_session_key_pairwire_rsc,
            { "Pairwise RSC", "capwap.control.message_element.ieee80211_station_session_key.pairwire_rsc",
            FT_BYTES, BASE_NONE, NULL, 0x0,
            "Receive Sequence Counter (TSC)", HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_station_session_key_key,
            { "Key", "capwap.control.message_element.ieee80211_station_session_key.key",
            FT_BYTES, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_id,
            { "Radio ID", "capwap.control.message_element.ieee80211__wtp_radio_info.radio_id",
            FT_UINT8, BASE_DEC, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_reserved,
            { "Radio Type Reserved", "capwap.control.message_element.ieee80211_wtp_info_radio.radio_type_reserved",
            FT_BYTES, BASE_NONE, NULL, 0x0,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_n,
            { "Radio Type 802.11n", "capwap.control.message_element.ieee80211_wtp_info_radio.radio_type_n",
            FT_BOOLEAN, 4, TFS(&tfs_true_false), 0x0008,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_g,
            { "Radio Type 802.11g", "capwap.control.message_element.ieee80211_wtp_info_radio.radio_type_g",
            FT_BOOLEAN, 4, TFS(&tfs_true_false), 0x0004,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_a,
            { "Radio Type 802.11a", "capwap.control.message_element.ieee80211_wtp_info_radio.radio_type_a",
            FT_BOOLEAN, 4, TFS(&tfs_true_false), 0x0002,
            NULL, HFILL }},
        { &hf_capwap_msg_element_type_ieee80211_wtp_radio_info_radio_type_b,
            { "Radio Type 802.11g", "capwap.control.message_element.ieee80211_wtp_info_radio.radio_type_b",
            FT_BOOLEAN, 4, TFS(&tfs_true_false), 0x0001,
            NULL, HFILL }},

        /* Data Channel Keep-Alive entries */
        { & hf_capwap_data_keep_alive,
            { "Keep-Alive", "capwap.keep_alive", FT_NONE, BASE_NONE,
            NULL, 0x00, NULL, HFILL } },
        { & hf_capwap_data_keep_alive_length,
            { "Message Element Length", "capwap.keep_alive.length", FT_UINT16, BASE_DEC,
            NULL, 0x00, NULL, HFILL } },

        /* Fragment entries */
        { &hf_msg_fragments,
            { "Message fragments", "capwap.fragments", FT_NONE, BASE_NONE,
            NULL, 0x00, NULL, HFILL } },
        { &hf_msg_fragment,
            { "Message fragment", "capwap.fragment", FT_FRAMENUM, BASE_NONE,
            NULL, 0x00, NULL, HFILL } },
        { &hf_msg_fragment_overlap,
            { "Message fragment overlap", "capwap.fragment.overlap", FT_BOOLEAN,
            BASE_NONE, NULL, 0x00, NULL, HFILL } },
        { &hf_msg_fragment_overlap_conflicts,
            { "Message fragment overlapping with conflicting data",
            "capwap.fragment.overlap.conflicts", FT_BOOLEAN, BASE_NONE, NULL,
            0x00, NULL, HFILL } },
        { &hf_msg_fragment_multiple_tails,
            { "Message has multiple tail fragments",
            "capwap.fragment.multiple_tails", FT_BOOLEAN, BASE_NONE,
            NULL, 0x00, NULL, HFILL } },
        { &hf_msg_fragment_too_long_fragment,
            { "Message fragment too long", "capwap.fragment.too_long_fragment",
            FT_BOOLEAN, BASE_NONE, NULL, 0x00, NULL, HFILL } },
        { &hf_msg_fragment_error,
            { "Message defragmentation error", "capwap.fragment.error", FT_FRAMENUM,
            BASE_NONE, NULL, 0x00, NULL, HFILL } },
        { &hf_msg_fragment_count,
            { "Message fragment count", "capwap.fragment.count", FT_UINT32, BASE_DEC,
            NULL, 0x00, NULL, HFILL } },
        { &hf_msg_reassembled_in,
            { "Reassembled in", "capwap.reassembled.in", FT_FRAMENUM, BASE_NONE,
            NULL, 0x00, NULL, HFILL } },
        { &hf_msg_reassembled_length,
            { "Reassembled CAPWAP length", "capwap.reassembled.length", FT_UINT32, BASE_DEC,
            NULL, 0x00, NULL, HFILL } }
    };

    /* Setup protocol subtree array */
    static gint *ett[] = {
        &ett_capwap,
        &ett_msg_fragment,
        &ett_msg_fragments
    };

    static ei_register_info ei[] = {
        { &ei_capwap_header_length_bad, { "capwap.header.length.bad", PI_MALFORMED, PI_WARN, "Wrong calculate length =! header length", EXPFILL }},
        { &ei_capwap_data_keep_alive_length, { "capwap.keep_alive.length.bad", PI_MALFORMED, PI_WARN, "Invalid Keep Alive length", EXPFILL }},
    };

    expert_module_t* expert_capwap;

    /* Register the protocol name and description */
    proto_capwap = proto_register_protocol("Control And Provisioning of Wireless Access Points", "CAPWAP", "capwap");

    /* Required function calls to register the header fields and subtrees used */
    proto_register_field_array(proto_capwap, hf, array_length(hf));

    proto_register_subtree_array(ett, array_length(ett));

    expert_capwap = expert_register_protocol(proto_capwap);
    expert_register_field_array(expert_capwap, ei, array_length(ei));

    register_init_routine(&capwap_reassemble_init);

    /* Register preferences module (See Section 2.6 for more on preferences) */
    capwap_module = prefs_register_protocol(proto_capwap, proto_reg_handoff_capwap);

    prefs_register_uint_preference(capwap_module, "udp.port.control", "CAPWAP Control UDP Port",
        "Set the port for CAPWAP Control messages (if other than the default of 5246)",
        10, &global_capwap_control_udp_port);

    prefs_register_uint_preference(capwap_module, "udp.port.data", "CAPWAP Data UDP Port",
        "Set the port for CAPWAP Data messages (if other than the default of 5247)",
        10, &global_capwap_data_udp_port);

    prefs_register_bool_preference(capwap_module, "draft_8_cisco", "Cisco Wireless Controller Support",
        "Enable support of Cisco Wireless Controller (based on old 8 draft revision).",
        &global_capwap_draft_8_cisco);

    prefs_register_bool_preference(capwap_module, "reassemble", "Reassemble fragmented CAPWAP packets",
        "Reassemble fragmented CAPWAP packets.",
        &global_capwap_reassemble);

    prefs_register_bool_preference(capwap_module, "swap_fc", "Swap Frame Control",
        "Swap frame control bytes (needed for some APs).",
        &global_capwap_swap_frame_control);

}

void
proto_reg_handoff_capwap(void)
{
    static gboolean inited = FALSE;
    static dissector_handle_t capwap_control_handle, capwap_data_handle;
    static guint capwap_control_udp_port, capwap_data_udp_port;

    if (!inited) {
        capwap_control_handle = new_create_dissector_handle(dissect_capwap_control, proto_capwap);
        capwap_data_handle    = create_dissector_handle(dissect_capwap_data, proto_capwap);
        dtls_handle           = find_dissector("dtls");
        ieee8023_handle       = find_dissector("eth_withoutfcs");
        ieee80211_handle      = find_dissector("wlan");
        ieee80211_bsfc_handle = find_dissector("wlan_bsfc");
        data_handle           = find_dissector("data");

        inited = TRUE;
    } else {
        dissector_delete_uint("udp.port", capwap_control_udp_port, capwap_control_handle);
        dissector_delete_uint("udp.port", capwap_data_udp_port, capwap_data_handle);
    }
    dissector_add_uint("udp.port", global_capwap_control_udp_port, capwap_control_handle);
    dissector_add_uint("udp.port", global_capwap_data_udp_port, capwap_data_handle);

    capwap_control_udp_port = global_capwap_control_udp_port;
    capwap_data_udp_port    = global_capwap_data_udp_port;
}
/*
 * Editor modelines
 *
 * Local Variables:
 * c-basic-offset: 4
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 *
 * ex: set shiftwidth=4 tabstop=8 expandtab:
 * :indentSize=4:tabSize=8:noTabs=true:
 */
