text: /* packet-lacp.c
   * Routines for Link Aggregation Control Protocol dissection.
   * IEEE Std 802.1AX-2014 Section 6.4.2.3
   *
   * Copyright 2002 Steve Housley <steve_housley@3com.com>
   *
   * Wireshark - Network traffic analyzer
   * By Gerald Combs <gerald@wireshark.org>
   * Copyright 1998 Gerald Combs
   *
   * SPDX-License-Identifier: GPL-2.0-or-later
   */
  
  #include "config.h"
  
  #include <epan/packet.h>
  #include <epan/to_str.h>
  #include <epan/expert.h>
  #include <epan/slow_protocol_subtypes.h>
  
  /* General declarations */
  void proto_register_lacp(void);
  void proto_reg_handoff_lacp(void);
  
  /* TLV Types */
  #define LACPDU_TYPE_TERMINATOR			0x00
  #define LACPDU_TYPE_ACTOR_INFORMATION		0x01
  #define LACPDU_TYPE_PARTNER_INFORMATION		0x02
  #define LACPDU_TYPE_COLLECTOR_INFORMATION	0x03
  
  static const value_string lacp_type_vals[] = {
      { LACPDU_TYPE_TERMINATOR,			"Terminator" },
      { LACPDU_TYPE_ACTOR_INFORMATION,		"Actor Information" },
      { LACPDU_TYPE_PARTNER_INFORMATION,		"Partner Information" },
      { LACPDU_TYPE_COLLECTOR_INFORMATION,	"Collector Information" },
      { 0, NULL }
  };
  
  /* Actor and Partner Flag bits */
  #define LACPDU_FLAGS_ACTIVITY           0x01
  #define LACPDU_FLAGS_TIMEOUT            0x02
  #define LACPDU_FLAGS_AGGREGATION        0x04
  #define LACPDU_FLAGS_SYNC               0x08
  #define LACPDU_FLAGS_COLLECTING         0x10
  #define LACPDU_FLAGS_DISTRIB            0x20
  #define LACPDU_FLAGS_DEFAULTED          0x40
  #define LACPDU_FLAGS_EXPIRED            0x80
  
  /* Initialise the protocol and registered fields */
  static int proto_lacp = -1;
  
  static int hf_lacp_version = -1;
  static int hf_lacp_tlv_type = -1;
  static int hf_lacp_tlv_length = -1;
  
  static int hf_lacp_actor_sysid_priority = -1;
  static int hf_lacp_actor_sysid = -1;
  static int hf_lacp_actor_key = -1;
  static int hf_lacp_actor_port_priority = -1;
  static int hf_lacp_actor_port = -1;
  static int hf_lacp_actor_state = -1;
  static int hf_lacp_actor_state_str = -1;
  static int hf_lacp_flags_a_activity = -1;
  static int hf_lacp_flags_a_timeout = -1;
  static int hf_lacp_flags_a_aggregation = -1;
  static int hf_lacp_flags_a_sync = -1;
  static int hf_lacp_flags_a_collecting = -1;
  static int hf_lacp_flags_a_distrib = -1;
  static int hf_lacp_flags_a_defaulted = -1;
  static int hf_lacp_flags_a_expired = -1;
  static int hf_lacp_actor_reserved = -1;
  
  static int hf_lacp_partner_sysid_priority = -1;
  static int hf_lacp_partner_sysid = -1;
  static int hf_lacp_partner_key = -1;
  static int hf_lacp_partner_port_priority = -1;
  static int hf_lacp_partner_port = -1;
  static int hf_lacp_partner_state = -1;
  static int hf_lacp_partner_state_str = -1;
  static int hf_lacp_flags_p_activity = -1;
  static int hf_lacp_flags_p_timeout = -1;
  static int hf_lacp_flags_p_aggregation = -1;
  static int hf_lacp_flags_p_sync = -1;
  static int hf_lacp_flags_p_collecting = -1;
  static int hf_lacp_flags_p_distrib = -1;
  static int hf_lacp_flags_p_defaulted = -1;
  static int hf_lacp_flags_p_expired = -1;
  static int hf_lacp_partner_reserved = -1;
  
  static int hf_lacp_coll_max_delay = -1;
  static int hf_lacp_coll_reserved = -1;
  
  static int hf_lacp_pad = -1;
  
  static int hf_lacp_vendor = -1;
  
  static int hf_lacp_vendor_hp_length = -1;
  static int hf_lacp_vendor_hp_irf_domain = -1;
  static int hf_lacp_vendor_hp_irf_mac = -1;
  static int hf_lacp_vendor_hp_irf_switch = -1;
  static int hf_lacp_vendor_hp_irf_port = -1;
  static int hf_lacp_vendor_hp_unknown = -1;
  
  
  /* Initialise the subtree pointers */
  static gint ett_lacp = -1;
  static gint ett_lacp_a_flags = -1;
  static gint ett_lacp_p_flags = -1;
  
  /* Expert Items */
  static expert_field ei_lacp_wrong_tlv_type = EI_INIT;
  static expert_field ei_lacp_wrong_tlv_length = EI_INIT;
  
  static const true_false_string tfs_active_passive = { "Active", "Passive" };
  static const true_false_string tfs_short_long_timeout = { "Short Timeout", "Long Timeout" };
  static const true_false_string tfs_aggregatable_individual = { "Aggregatable", "Individual" };
  static const true_false_string tfs_in_sync_out_sync = { "In Sync", "Out of Sync" };
  
  static const char * lacp_state_flags_to_str(guint32 value)
  {
      wmem_strbuf_t *buf = wmem_strbuf_new(wmem_packet_scope(), "");
      const unsigned int flags_count = 8;
      const char first_letters[] = "EFDCSGSA";
      unsigned int i;
  
      for (i = 0; i < flags_count; i++) {
          if (((value >> (flags_count - 1 - i)) & 1)) {
              wmem_strbuf_append_c(buf, first_letters[i]);
          } else {
              wmem_strbuf_append_c(buf, '*');
          }
      }
  
      return wmem_strbuf_finalize(buf);
  }
  
  /*
   * Name: dissect_lacp
   *
   * Description:
   *    This function is used to dissect the Link Aggregation Control Protocol
   *    defined in IEEE 802.1AX
   *
   * Input Arguments:
   *    tvb:   buffer associated with the rcv packet (see tvbuff.h).
   *    pinfo: structure associated with the rcv packet (see packet_info.h).
   *    tree:  the protocol tree associated with the rcv packet (see proto.h).
   *
   * Return Values: None
   *
   * Notes:
   */
  static int
  dissect_lacp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
  {
      int          offset = 0, length_remaining;
      guint        tlv_type, tlv_length;
      guint        version, port, key;
      const gchar  *sysidstr, *flagstr;
  
      proto_tree *lacp_tree;
      proto_item *lacp_item, *tlv_type_item, *tlv_length_item;
      proto_item *ti;
  
      static const int * actor_flags[] = {
          &hf_lacp_flags_a_activity,
          &hf_lacp_flags_a_timeout,
          &hf_lacp_flags_a_aggregation,
          &hf_lacp_flags_a_sync,
          &hf_lacp_flags_a_collecting,
          &hf_lacp_flags_a_distrib,
          &hf_lacp_flags_a_defaulted,
          &hf_lacp_flags_a_expired,
          NULL
      };
      static const int * partner_flags[] = {
          &hf_lacp_flags_p_activity,
          &hf_lacp_flags_p_timeout,
          &hf_lacp_flags_p_aggregation,
          &hf_lacp_flags_p_sync,
          &hf_lacp_flags_p_collecting,
          &hf_lacp_flags_p_distrib,
          &hf_lacp_flags_p_defaulted,
          &hf_lacp_flags_p_expired,
          NULL
      };
  
      col_set_str(pinfo->cinfo, COL_PROTOCOL, "LACP");
      col_set_str(pinfo->cinfo, COL_INFO, "Link Aggregation Control Protocol");
  
      /* Add LACP Heading - Note: 1 byte for slowprotocol has been consumed already */
      lacp_item = proto_tree_add_protocol_format(tree, proto_lacp, tvb,
                                                   0, -1, "Link Aggregation Control Protocol");
      lacp_tree = proto_item_add_subtree(lacp_item, ett_lacp);
  
      /* Version Number */
  
      proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_version, tvb, offset, 1, ENC_NA, &version);
      offset += 1;
  
      col_add_fstr(pinfo->cinfo, COL_INFO, "v%d", version);
  
      /* Actor */
  
      tlv_type_item = proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_type, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_type);
      offset += 1;
  
      tlv_length_item = proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_length, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_length);
      offset += 1;
  
      if (tlv_type != LACPDU_TYPE_ACTOR_INFORMATION) {
          expert_add_info(pinfo, tlv_type_item, &ei_lacp_wrong_tlv_type);
      }
      if (tlv_length != 20) {
          expert_add_info(pinfo, tlv_length_item, &ei_lacp_wrong_tlv_length);
      }
  
      proto_tree_add_item(lacp_tree, hf_lacp_actor_sysid_priority, tvb, offset, 2, ENC_BIG_ENDIAN);
      offset += 2;
  
      proto_tree_add_item(lacp_tree, hf_lacp_actor_sysid, tvb, offset, 6, ENC_NA);
      sysidstr = tvb_ether_to_str(tvb, offset);
      offset += 6;
  
      proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_actor_key, tvb, offset, 2, ENC_BIG_ENDIAN, &key);
      offset += 2;
  
      proto_tree_add_item(lacp_tree, hf_lacp_actor_port_priority, tvb, offset, 2, ENC_BIG_ENDIAN);
      offset += 2;
  
      proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_actor_port, tvb, offset, 2, ENC_BIG_ENDIAN, &port);
      offset += 2;
  
      proto_tree_add_bitmask_with_flags(lacp_tree, tvb, offset, hf_lacp_actor_state,
                             ett_lacp_a_flags, actor_flags, ENC_NA, BMT_NO_INT|BMT_NO_TFS|BMT_NO_FALSE);
      flagstr = lacp_state_flags_to_str(tvb_get_guint8(tvb, offset));
      ti = proto_tree_add_string(lacp_tree, hf_lacp_actor_state_str, tvb, offset, 1, flagstr);
      PROTO_ITEM_SET_GENERATED(ti);
      offset += 1;
  
      proto_tree_add_item(lacp_tree, hf_lacp_actor_reserved, tvb, offset, 3, ENC_NA);
      offset += 3;
  
      col_append_fstr(pinfo->cinfo, COL_INFO, " ACTOR %s P: %d K: %d %s", sysidstr, port, key, flagstr);
  
      /* Partner */
  
      tlv_type_item = proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_type, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_type);
      offset += 1;
  
      tlv_length_item = proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_length, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_length);
      offset += 1;
  
      if (tlv_type != LACPDU_TYPE_PARTNER_INFORMATION) {
          expert_add_info(pinfo, tlv_type_item, &ei_lacp_wrong_tlv_type);
      }
      if (tlv_length != 20) {
          expert_add_info(pinfo, tlv_length_item, &ei_lacp_wrong_tlv_length);
      }
  
      proto_tree_add_item(lacp_tree, hf_lacp_partner_sysid_priority, tvb, offset, 2, ENC_BIG_ENDIAN);
      offset += 2;
  
      proto_tree_add_item(lacp_tree, hf_lacp_partner_sysid, tvb, offset, 6, ENC_NA);
      sysidstr = tvb_ether_to_str(tvb, offset);
      offset += 6;
  
      proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_partner_key, tvb, offset, 2, ENC_BIG_ENDIAN, &key);
      offset += 2;
  
      proto_tree_add_item(lacp_tree, hf_lacp_partner_port_priority, tvb, offset, 2, ENC_BIG_ENDIAN);
      offset += 2;
  
      proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_partner_port, tvb, offset, 2, ENC_BIG_ENDIAN, &port);
      offset += 2;
  
      proto_tree_add_bitmask_with_flags(lacp_tree, tvb, offset, hf_lacp_partner_state, ett_lacp_p_flags, partner_flags, ENC_NA, BMT_NO_INT|BMT_NO_TFS|BMT_NO_FALSE);
      flagstr = lacp_state_flags_to_str(tvb_get_guint8(tvb, offset));
      ti = proto_tree_add_string(lacp_tree, hf_lacp_partner_state_str, tvb, offset, 1, flagstr);
      PROTO_ITEM_SET_GENERATED(ti);
      offset += 1;
  
      proto_tree_add_item(lacp_tree, hf_lacp_partner_reserved, tvb, offset, 3, ENC_NA);
      offset += 3;
  
      col_append_fstr(pinfo->cinfo, COL_INFO, " PARTNER %s P: %d K: %d %s", sysidstr, port, key, flagstr);
  
      /* Collector */
  
      tlv_type_item = proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_type, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_type);
      offset += 1;
  
      tlv_length_item = proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_length, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_length);
      offset += 1;
  
      if (tlv_type != LACPDU_TYPE_COLLECTOR_INFORMATION) {
          expert_add_info(pinfo, tlv_type_item, &ei_lacp_wrong_tlv_type);
      }
      if (tlv_length != 16) {
          expert_add_info(pinfo, tlv_length_item, &ei_lacp_wrong_tlv_length);
      }
  
      proto_tree_add_item(lacp_tree, hf_lacp_coll_max_delay, tvb, offset, 2, ENC_BIG_ENDIAN);
      offset += 2;
  
      proto_tree_add_item(lacp_tree, hf_lacp_coll_reserved, tvb, offset, 12, ENC_NA);
      offset += 12;
  
      /* col_append_fstr(pinfo->cinfo, COL_INFO, " COLLECTOR"); */
  
      /* Other TLVs (LACP version 2) */
  
      proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_type, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_type);
      offset += 1;
  
      tlv_length_item = proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_length, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_length);
      offset += 1;
  
      while (tlv_type != LACPDU_TYPE_TERMINATOR && tlv_length >= 2) {
          offset += (tlv_length - 2);
          proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_type, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_type);
          offset += 1;
  
          tlv_length_item = proto_tree_add_item_ret_uint(lacp_tree, hf_lacp_tlv_length, tvb, offset, 1, ENC_BIG_ENDIAN, &tlv_length);
          offset += 1;
      }
  
      /* Terminator - already handled */
  
      if (tlv_length != 0) {
          expert_add_info(pinfo, tlv_length_item, &ei_lacp_wrong_tlv_length);
      }
  
      /* Pad */
  
      if (offset < (128 - 1 - 18)) {  /* LACPv1 fixed size - Eth */
          proto_tree_add_item(lacp_tree, hf_lacp_pad, tvb, offset, (128 - 1 - 18)-offset, ENC_NA);
          offset += ((128 - 1 - 18)-offset);
      }
  
      /* HP specific stuff (in violation of standard) */
  
      length_remaining = tvb_reported_length_remaining(tvb, offset);
      if (length_remaining) {
          proto_tree_add_item(lacp_tree, hf_lacp_vendor, tvb, offset, length_remaining, ENC_NA);
  
          /* HP LACP MAD IRF, first bytes is always 0x64 and second bytes is the rest of length */
          if (length_remaining > 2 && (tvb_get_guint8(tvb, offset) == 0x64) && ((length_remaining -2) == tvb_get_guint8(tvb, offset+1)) )
          {
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_unknown, tvb, offset, 1, ENC_NA);
              offset += 1;
  
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_length, tvb, offset, 1, ENC_NA);
              offset += 1;
  
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_unknown, tvb, offset, 2, ENC_NA);
              offset += 2;
  
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_irf_domain, tvb, offset, 2, ENC_NA);
              offset += 2;
  
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_irf_mac, tvb, offset, 6, ENC_NA);
              offset += 6;
  
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_unknown, tvb, offset, 8, ENC_NA);
              offset += 8;
  
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_irf_switch, tvb, offset, 2, ENC_NA);
              offset += 2;
  
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_irf_port, tvb, offset, 2, ENC_NA);
              offset += 2;
  
              proto_tree_add_item(lacp_tree, hf_lacp_vendor_hp_unknown, tvb, offset, 2, ENC_NA);
              offset += 2;
  
          } else {
              offset += length_remaining;
          }
      }
  
      return offset;
  }
  
  /* Register the protocol with Wireshark */
  void
  proto_register_lacp(void)
  {
  /* Setup list of header fields */
  
      static hf_register_info hf[] = {
          { &hf_lacp_version,
            { "LACP Version",          "lacp.version",
              FT_UINT8,    BASE_HEX,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_tlv_type,
            { "TLV Type",               "lacp.tlv_type",
              FT_UINT8,    BASE_HEX,    VALS(lacp_type_vals),    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_tlv_length,
            { "TLV Length",             "lacp.tlv_length",
              FT_UINT8,    BASE_HEX,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_actor_sysid_priority,
            { "Actor System Priority",  "lacp.actor.sys_priority",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_actor_sysid,
            { "Actor System ID",         "lacp.actor.sysid",
              FT_ETHER,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_actor_key,
            { "Actor Key",            "lacp.actor.key",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_actor_port_priority,
            { "Actor Port Priority",            "lacp.actor.port_priority",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_actor_port,
            { "Actor Port",            "lacp.actor.port",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_actor_state,
            { "Actor State",            "lacp.actor.state",
              FT_UINT8,    BASE_HEX,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_actor_state_str,
            { "Actor State Flags",            "lacp.actor.state_str",
              FT_STRING,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_flags_a_activity,
            { "LACP Activity",        "lacp.actor.state.activity",
              FT_BOOLEAN,    8,        TFS(&tfs_active_passive),    LACPDU_FLAGS_ACTIVITY,
              NULL, HFILL }},
  
          { &hf_lacp_flags_a_timeout,
            { "LACP Timeout",        "lacp.actor.state.timeout",
              FT_BOOLEAN,    8,        TFS(&tfs_short_long_timeout),    LACPDU_FLAGS_TIMEOUT,
              NULL, HFILL }},
  
          { &hf_lacp_flags_a_aggregation,
            { "Aggregation",        "lacp.actor.state.aggregation",
              FT_BOOLEAN,    8,        TFS(&tfs_aggregatable_individual),    LACPDU_FLAGS_AGGREGATION,
              NULL, HFILL }},
  
          { &hf_lacp_flags_a_sync,
            { "Synchronization",        "lacp.actor.state.synchronization",
              FT_BOOLEAN,    8,        TFS(&tfs_in_sync_out_sync),    LACPDU_FLAGS_SYNC,
              NULL, HFILL }},
  
          { &hf_lacp_flags_a_collecting,
            { "Collecting",        "lacp.actor.state.collecting",
              FT_BOOLEAN,    8,        TFS(&tfs_enabled_disabled),    LACPDU_FLAGS_COLLECTING,
              NULL, HFILL }},
  
          { &hf_lacp_flags_a_distrib,
            { "Distributing",        "lacp.actor.state.distributing",
              FT_BOOLEAN,    8,        TFS(&tfs_enabled_disabled),    LACPDU_FLAGS_DISTRIB,
              NULL, HFILL }},
  
          { &hf_lacp_flags_a_defaulted,
            { "Defaulted",        "lacp.actor.state.defaulted",
              FT_BOOLEAN,    8,        TFS(&tfs_yes_no),    LACPDU_FLAGS_DEFAULTED,
              "1 = Actor Rx machine is using DEFAULT Partner info, 0 = using info in Rx'd LACPDU", HFILL }},
  
          { &hf_lacp_flags_a_expired,
            { "Expired",        "lacp.actor.state.expired",
              FT_BOOLEAN,    8,        TFS(&tfs_yes_no),    LACPDU_FLAGS_EXPIRED,
              NULL, HFILL }},
  
          { &hf_lacp_actor_reserved,
            { "Reserved",        "lacp.actor.reserved",
              FT_BYTES,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_partner_sysid_priority,
            { "Partner System Priority",  "lacp.partner.sys_priority",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_partner_sysid,
            { "Partner System",            "lacp.partner.sysid",
              FT_ETHER,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_partner_key,
            { "Partner Key",            "lacp.partner.key",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_partner_port_priority,
            { "Partner Port Priority",            "lacp.partner.port_priority",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_partner_port,
            { "Partner Port",            "lacp.partner.port",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              "The port number associated with this link assigned to the port by the Partner (via Management or Admin)", HFILL }},
  
          { &hf_lacp_partner_state,
            { "Partner State",            "lacp.partner.state",
              FT_UINT8,    BASE_HEX,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_partner_state_str,
            { "Partner State Flags",            "lacp.partner.state_str",
              FT_STRING,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_flags_p_activity,
            { "LACP Activity",        "lacp.partner.state.activity",
              FT_BOOLEAN,    8,        TFS(&tfs_active_passive),    LACPDU_FLAGS_ACTIVITY,
              NULL, HFILL }},
  
          { &hf_lacp_flags_p_timeout,
            { "LACP Timeout",        "lacp.partner.state.timeout",
              FT_BOOLEAN,    8,        TFS(&tfs_short_long_timeout),    LACPDU_FLAGS_TIMEOUT,
              NULL, HFILL }},
  
          { &hf_lacp_flags_p_aggregation,
            { "Aggregation",        "lacp.partner.state.aggregation",
              FT_BOOLEAN,    8,        TFS(&tfs_aggregatable_individual),    LACPDU_FLAGS_AGGREGATION,
              NULL, HFILL }},
  
          { &hf_lacp_flags_p_sync,
            { "Synchronization",        "lacp.partner.state.synchronization",
              FT_BOOLEAN,    8,        TFS(&tfs_in_sync_out_sync),    LACPDU_FLAGS_SYNC,
              NULL, HFILL }},
  
          { &hf_lacp_flags_p_collecting,
            { "Collecting",        "lacp.partner.state.collecting",
              FT_BOOLEAN,    8,        TFS(&tfs_enabled_disabled),    LACPDU_FLAGS_COLLECTING,
              NULL, HFILL }},
  
          { &hf_lacp_flags_p_distrib,
            { "Distributing",        "lacp.partner.state.distributing",
              FT_BOOLEAN,    8,        TFS(&tfs_enabled_disabled),    LACPDU_FLAGS_DISTRIB,
              NULL, HFILL }},
  
          { &hf_lacp_flags_p_defaulted,
            { "Defaulted",        "lacp.partner.state.defaulted",
              FT_BOOLEAN,    8,        TFS(&tfs_yes_no),    LACPDU_FLAGS_DEFAULTED,
              "1 = Actor Rx machine is using DEFAULT Partner info, 0 = using info in Rx'd LACPDU", HFILL }},
  
          { &hf_lacp_flags_p_expired,
            { "Expired",        "lacp.partner.state.expired",
              FT_BOOLEAN,    8,        TFS(&tfs_yes_no),    LACPDU_FLAGS_EXPIRED,
              NULL, HFILL }},
  
          { &hf_lacp_partner_reserved,
            { "Reserved",        "lacp.partner.reserved",
              FT_BYTES,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_coll_max_delay,
            { "Collector Max Delay",  "lacp.collector.max_delay",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              "The max delay of the station sending the LACPDU (in tens of usecs)", HFILL }},
  
          { &hf_lacp_coll_reserved,
            { "Reserved",        "lacp.coll_reserved",
              FT_BYTES,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_pad,
            { "Pad",        "lacp.pad",
              FT_BYTES,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
  
          { &hf_lacp_vendor,
            { "Unknown vendor",        "lacp.vendor",
              FT_BYTES,    BASE_NONE,    NULL,    0x0,
              "Some extra bytes (Vendor Specific ?)", HFILL }},
  
          /* HP IRF MAD LACP */
          { &hf_lacp_vendor_hp_length,
            { "Length",        "lacp.vendor.hp.length",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              "The length of HP TLV", HFILL }},
          { &hf_lacp_vendor_hp_irf_domain,
            { "IRF Domain",        "lacp.vendor.hp.irf_domain",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              NULL, HFILL }},
          { &hf_lacp_vendor_hp_irf_mac,
            { "IRF MAC",        "lacp.vendor.hp.irf_mac",
              FT_ETHER,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
          { &hf_lacp_vendor_hp_irf_switch,
            { "IRF Switch",        "lacp.vendor.hp.irf_switch",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              "Number of switch on the IRF stack", HFILL }},
          { &hf_lacp_vendor_hp_irf_port,
            { "IRF Port",        "lacp.vendor.hp.irf_port",
              FT_UINT16,    BASE_DEC,    NULL,    0x0,
              "Stack ID where the LACP is attached", HFILL }},
          { &hf_lacp_vendor_hp_unknown,
            { "Unknown",        "lacp.vendor.hp.unknown",
              FT_BYTES,    BASE_NONE,    NULL,    0x0,
              NULL, HFILL }},
      };
  
      /* Setup protocol subtree array */
  
      static gint *ett[] = {
          &ett_lacp,
          &ett_lacp_a_flags,
          &ett_lacp_p_flags,
      };
  
      static ei_register_info ei[] = {
      { &ei_lacp_wrong_tlv_type,   { "lacp.wrong_tlv_type",   PI_MALFORMED, PI_ERROR, "TLV is not expected type",   EXPFILL }},
      { &ei_lacp_wrong_tlv_length, { "lacp.wrong_tlv_length", PI_MALFORMED, PI_ERROR, "TLV is not expected length", EXPFILL }},
      };
  
      expert_module_t* expert_lacp;
  
  
      /* Register the protocol name and description */
  
      proto_lacp = proto_register_protocol("LACP", "Link Aggregation Control Protocol", "lacp");
  
      /* Required function calls to register the header fields and subtrees used */
  
      proto_register_field_array(proto_lacp, hf, array_length(hf));
      proto_register_subtree_array(ett, array_length(ett));
      expert_lacp = expert_register_protocol(proto_lacp);
      expert_register_field_array(expert_lacp, ei, array_length(ei));
  
  }
  
  void
  proto_reg_handoff_lacp(void)
  {
      dissector_handle_t lacp_handle;
  
      lacp_handle = create_dissector_handle(dissect_lacp, proto_lacp);
      dissector_add_uint("slow.subtype", LACP_SUBTYPE, lacp_handle);
  }
  
  /*
   * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
   *
   * Local variables:
   * c-basic-offset: 4
   * tab-width: 8
   * indent-tabs-mode: nil
   * End:
   *
   * vi: set shiftwidth=4 tabstop=8 expandtab:
   * :indentSize=4:tabSize=8:noTabs=true:
   */
  