static int
dissect_openvpn_msg_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *openvpn_tree, proto_tree *parent_tree, gint offset)
{
    gboolean       tls_auth;
    guint          openvpn_keyid;
    guint          openvpn_opcode;
    guint32        msg_mpid      = -1;
    guint32        msg_sessionid = -1;
    guint8         openvpn_predict_tlsauth_arraylength;
    proto_item    *ti2, *ti3;
    proto_tree    *packetarray_tree, *type_tree;
    guint32        msg_length_remaining;
    gboolean       msg_lastframe;
    fragment_head *frag_msg;
    tvbuff_t      *new_tvb;
    gboolean       save_fragmented;

    /* Clear out stuff in the info column */
    col_set_str(pinfo->cinfo, COL_PROTOCOL, PSNAME);
    col_clear(pinfo->cinfo,COL_INFO);

    /* read opcode and write to info column */
    openvpn_opcode = tvb_get_bits8(tvb, offset*8, 5);
    col_append_fstr(pinfo->cinfo, COL_INFO, "MessageType: %s",
                    val_to_str_const(openvpn_opcode, openvpn_message_types, "Unknown Messagetype"));


    openvpn_keyid = tvb_get_bits8(tvb, offset*8 + 5, 3);
    proto_item_append_text(parent_tree, ", Opcode: %s, Key ID: %d",
                           val_to_str(openvpn_opcode, openvpn_message_types, "Unknown (0x%02x)"),
                           openvpn_keyid);

    ti2 = proto_tree_add_item(openvpn_tree, hf_openvpn_pdu_type, tvb, offset, 1, ENC_BIG_ENDIAN);
    proto_item_append_text(ti2, " [opcode/key_id]");

    type_tree = proto_item_add_subtree(ti2, ett_openvpn_type);
    proto_tree_add_item(type_tree, hf_openvpn_opcode, tvb, offset, 1, ENC_BIG_ENDIAN);
    proto_tree_add_item(type_tree, hf_openvpn_keyid, tvb, offset, 1, ENC_BIG_ENDIAN);
    offset += 1;

    /* if we have a P_CONTROL or P_ACK packet */
    if (openvpn_opcode != P_DATA_V1) {
        /* read sessionid */
        msg_sessionid = tvb_get_bits32(tvb, offset*8+32, 32, ENC_BIG_ENDIAN);
        proto_tree_add_item(openvpn_tree, hf_openvpn_sessionid, tvb, offset, 8, ENC_BIG_ENDIAN);
        offset += 8;

        /* tls-auth detection (this can be overridden by preferences */
        openvpn_predict_tlsauth_arraylength = tvb_get_guint8(tvb, offset);
        /* if the first 4 bytes that would, if tls-auth is used, contain part of the hmac,
           lack entropy, we asume no tls-auth is used */
        if (pref_tls_auth_override == FALSE) {
            if ((openvpn_opcode != P_DATA_V1)
                    && (openvpn_predict_tlsauth_arraylength > 0)
                    && check_for_valid_hmac(tvb_get_ntohl(tvb, offset))) {
                tls_auth = TRUE;
            } else {
                tls_auth = FALSE;
            }
        } else {
            tls_auth = pref_tls_auth;
        }

        if (tls_auth == TRUE) {
            proto_tree_add_item(openvpn_tree, hf_openvpn_hmac, tvb, offset, tls_auth_hmac_size, ENC_NA);
            offset += tls_auth_hmac_size;

            if (tvb_length_remaining(tvb, offset) >= 8) {
                proto_tree_add_item(openvpn_tree, hf_openvpn_pid, tvb, offset, 4, ENC_BIG_ENDIAN);
                offset += 4;

                if (pref_long_format) {
                    proto_tree_add_item(openvpn_tree, hf_openvpn_net_time, tvb, offset, 4, ENC_BIG_ENDIAN);
                    offset += 4;
                }
            }
        }

        if (tvb_length_remaining(tvb, offset) >= 1) {
            /* read P_ACK packet-id array length */
            gint pid_arraylength = tvb_get_guint8(tvb, offset);
            gint i;
            proto_tree_add_item(openvpn_tree, hf_openvpn_mpid_arraylength, tvb, offset, 1, ENC_BIG_ENDIAN);
            offset += 1;

            if (pid_arraylength > 0) {

                ti3 = proto_tree_add_text(openvpn_tree, tvb, offset, 0, "Packet-ID Array");
                packetarray_tree = proto_item_add_subtree(ti3, ett_openvpn_packetarray);
                for (i = 0; i < pid_arraylength; i++) {
                    proto_tree_add_item(packetarray_tree, hf_openvpn_mpid_arrayelement, tvb, offset, 4, ENC_BIG_ENDIAN);
                    offset += 4;
                }

                if (tvb_length_remaining(tvb, offset) >= 8) {
                    proto_tree_add_item(openvpn_tree, hf_openvpn_rsessionid, tvb, offset, 8, ENC_BIG_ENDIAN);
                    offset += 8;
                }
            }
        }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        }
        ccn_charbuf_append_string(c, "Exclude: ");
        ccn_buf_advance(d);
        if (ccn_buf_match_dtag(d, CCN_DTAG_Any)) {
            ccn_buf_advance(d);
            ccn_charbuf_append_string(c, "* ");
            ccn_buf_check_close(d);
        }
        else if (ccn_buf_match_dtag(d, CCN_DTAG_Bloom)) {
            ccn_buf_advance(d);
            if (ccn_buf_match_blob(d, &bloom, &bloom_size))
                ccn_buf_advance(d);
            ccn_charbuf_append_string(c, "? ");
            ccn_buf_check_close(d);
        }
        while (ccn_buf_match_dtag(d, CCN_DTAG_Component)) {
            ccn_buf_advance(d);
            comp_size = 0;
            if (ccn_buf_match_blob(d, &comp, &comp_size))
                ccn_buf_advance(d);
            ccn_uri_append_percentescaped(c, comp, comp_size);
            ccn_charbuf_append_string(c, " ");
            ccn_buf_check_close(d);
            if (ccn_buf_match_dtag(d, CCN_DTAG_Any)) {
                ccn_buf_advance(d);
                ccn_charbuf_append_string(c, "* ");
                ccn_buf_check_close(d);
            }
            else if (ccn_buf_match_dtag(d, CCN_DTAG_Bloom)) {
                ccn_buf_advance(d);
                if (ccn_buf_match_blob(d, &bloom, &bloom_size))
                    ccn_buf_advance(d);
                ccn_charbuf_append_string(c, "? ");
                ccn_buf_check_close(d);
            }
        }
        
        titem = proto_tree_add_text(tree, tvb, pi->offset[CCN_PI_B_Exclude], l,
                                    "%s", ccn_charbuf_as_string(c));
        exclude_tree = proto_item_add_subtree(titem, ett_exclude);
        ccn_charbuf_destroy(&c);

    }
    /* ChildSelector */
    l = pi->offset[CCN_PI_E_ChildSelector] - pi->offset[CCN_PI_B_ChildSelector];
    if (l > 0) {
        i = pi->orderpref;
        titem = proto_tree_add_uint(tree, hf_ccn_childselector, tvb, pi->offset[CCN_PI_B_ChildSelector], l, i);
        proto_item_append_text(titem, ", %s", val_to_str(i & 1, VALS(childselectordirection_vals), ""));
        
    }
    
    /* AnswerOriginKind */
    l = pi->offset[CCN_PI_E_AnswerOriginKind] - pi->offset[CCN_PI_B_AnswerOriginKind];
    if (l > 0) {
        i = pi->answerfrom;
        titem = proto_tree_add_uint(tree, hf_ccn_answeroriginkind, tvb, pi->offset[CCN_PI_B_AnswerOriginKind], l, i);
    }
    
    /* Scope */
    l = pi->offset[CCN_PI_E_Scope] - pi->offset[CCN_PI_B_Scope];
    if (l > 0) {
        i = pi->scope;
        titem = proto_tree_add_uint(tree, hf_ccn_scope, tvb, pi->offset[CCN_PI_B_Scope], l, i);
    }
    
    /* InterestLifetime */
    l = pi->offset[CCN_PI_E_InterestLifetime] - pi->offset[CCN_PI_B_InterestLifetime];
    if (l > 0) {
        i = ccn_ref_tagged_BLOB(CCN_DTAG_InterestLifetime, ccnb,
                                pi->offset[CCN_PI_B_InterestLifetime],
                                pi->offset[CCN_PI_E_InterestLifetime],
                                &blob, &blob_size);
        lifetime = 0.0;
        for (i = 0; i < blob_size; i++)
            lifetime = lifetime * 256.0 + (double)blob[i];
        lifetime /= 4096.0;
        titem = proto_tree_add_double(tree, hf_ccn_interestlifetime, tvb, blob - ccnb, blob_size, lifetime);
    }
    
    /* Nonce */
    l = pi->offset[CCN_PI_E_Nonce] - pi->offset[CCN_PI_B_Nonce];
    if (l > 0) {
        i = ccn_ref_tagged_BLOB(CCN_DTAG_Nonce, ccnb,
                                pi->offset[CCN_PI_B_Nonce],
                                pi->offset[CCN_PI_E_Nonce],
                                &blob, &blob_size);
        if (check_col(pinfo->cinfo, COL_INFO)) {
            col_append_str(pinfo->cinfo, COL_INFO, ", <");
            for (i = 0; i < blob_size; i++)
                col_append_fstr(pinfo->cinfo, COL_INFO, "%02x", blob[i]);
            col_append_str(pinfo->cinfo, COL_INFO, ">");
        }
        titem = proto_tree_add_item(tree, hf_ccn_nonce, tvb,
                                    blob - ccnb, blob_size, FALSE);
    }
    
    return (1);
    
}

/*
* Dissect RTSE PDUs inside a PPDU.
*/
static int
dissect_rtse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data)
{
    int offset = 0;
    int old_offset;
    proto_item *item;
    proto_tree *tree;
    proto_tree *next_tree=NULL;
    tvbuff_t *next_tvb = NULL;
    tvbuff_t *data_tvb = NULL;
    fragment_head *frag_msg = NULL;
    guint32 fragment_length;
    guint32 rtse_id = 0;
    gboolean data_handled = FALSE;
    struct SESSION_DATA_STRUCTURE* session;
    conversation_t *conversation = NULL;
    asn1_ctx_t asn1_ctx;
    asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);

    /* do we have application context from the acse dissector? */
    if (data == NULL)
        return 0;
    session  = (struct SESSION_DATA_STRUCTURE*)data;

    /* save parent_tree so subdissectors can create new top nodes */
    top_tree=parent_tree;

    asn1_ctx.private_data = session;

    col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTSE");
    col_clear(pinfo->cinfo, COL_INFO);

    if (rtse_reassemble &&
        ((session->spdu_type == SES_DATA_TRANSFER) ||
         (session->spdu_type == SES_MAJOR_SYNC_POINT))) {
        /* Use conversation index as fragment id */
        conversation  = find_conversation (pinfo->fd->num,
                           &pinfo->src, &pinfo->dst, pinfo->ptype,
                           pinfo->srcport, pinfo->destport, 0);
        if (conversation != NULL) {
            rtse_id = conversation->index;
        }
        session->rtse_reassemble = TRUE;
    }
    if (rtse_reassemble && session->spdu_type == SES_MAJOR_SYNC_POINT) {
        frag_msg = fragment_end_seq_next (&rtse_reassembly_table,
                          pinfo, rtse_id, NULL);
        next_tvb = process_reassembled_data (tvb, offset, pinfo, "Reassembled RTSE",
                             frag_msg, &rtse_frag_items, NULL, parent_tree);
    }

    item = proto_tree_add_item(parent_tree, proto_rtse, next_tvb ? next_tvb : tvb, 0, -1, ENC_NA);
    tree = proto_item_add_subtree(item, ett_rtse);

    if (rtse_reassemble && session->spdu_type == SES_DATA_TRANSFER) {
        /* strip off the OCTET STRING encoding - including any CONSTRUCTED OCTET STRING */
        dissect_ber_octet_string(FALSE, &asn1_ctx, tree, tvb, offset, hf_rtse_segment_data, &data_tvb);

        if (data_tvb) {
            fragment_length = tvb_captured_length_remaining (data_tvb, 0);
            proto_item_append_text(asn1_ctx.created_item, " (%u byte%s)", fragment_length,
                                        plurality(fragment_length, "", "s"));
            frag_msg = fragment_add_seq_next (&rtse_reassembly_table,
                              data_tvb, 0, pinfo,
                              rtse_id, NULL,
                              fragment_length, TRUE);
            if (frag_msg && pinfo->fd->num != frag_msg->reassembled_in) {
                /* Add a "Reassembled in" link if not reassembled in this frame */
                proto_tree_add_uint (tree, *(rtse_frag_items.hf_reassembled_in),
                             data_tvb, 0, 0, frag_msg->reassembled_in);
            }
            pinfo->fragmented = TRUE;
            data_handled = TRUE;
        } else {
            fragment_length = tvb_captured_length_remaining (tvb, offset);
        }

        col_append_fstr(pinfo->cinfo, COL_INFO, "[RTSE fragment, %u byte%s]",
                    fragment_length, plurality(fragment_length, "", "s"));
    } else if (rtse_reassemble && session->spdu_type == SES_MAJOR_SYNC_POINT) {
        if (next_tvb) {
            /* ROS won't do this for us */
            session->ros_op = (ROS_OP_INVOKE | ROS_OP_ARGUMENT);
            /*offset=*/dissect_ber_external_type(FALSE, tree, next_tvb, 0, &asn1_ctx, -1, call_rtse_external_type_callback);
            top_tree = NULL;
            /* Return other than 0 to indicate that we handled this packet */
            return 1;
        } else {
            offset = tvb_captured_length (tvb);
        }
        pinfo->fragmented = FALSE;
        data_handled = TRUE;
    }

    if (!data_handled) {
        while (tvb_reported_length_remaining(tvb, offset) > 0){
            old_offset=offset;
//.........这里部分代码省略.........

int
dissect_IDispatch_Invoke_resp(tvbuff_t *tvb, int offset,
                              packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
    guint32 u32Pointer;
    guint32 u32Pointer2;
    guint32 u32Pointer3;
    guint32 u32VariableOffset;
    guint32 u32ArraySize;
    guint32 u32SubStart;
    guint16 u16Code;
    guint16 u16Reserved;
    guint32 u32HelpContext;
    guint32 u32Reserved;
    guint32 u32DeferredFillIn;
    guint32 u32ArgErr;
    guint32 u32HResult;
    guint32 u32SCode;
    guint32 u32VarRef;
    gchar       szName[1000] = { 0 };
    proto_item *excepinfo_item;
    proto_tree *excepinfo_tree;


    offset = dissect_dcom_that(tvb, offset, pinfo, tree, drep);

    offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
                                         &u32Pointer);
    if (u32Pointer) {
        offset = dissect_dcom_VARIANT(tvb, offset, pinfo, tree, drep, hf_dispatch_varresult);
    }

    /* ExcepInfo */
    excepinfo_item = proto_tree_add_item(tree, hf_dispatch_excepinfo, tvb, offset, 0, ENC_NA);
    excepinfo_tree = proto_item_add_subtree (excepinfo_item, ett_dispatch_excepinfo);
    u32SubStart = offset;

    offset = dissect_dcom_WORD(tvb, offset, pinfo, excepinfo_tree, drep,
                               hf_dispatch_code, &u16Code);
    offset = dissect_dcom_WORD(tvb, offset, pinfo, excepinfo_tree, drep,
                               hf_dispatch_reserved16, &u16Reserved);
    offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, excepinfo_tree, drep,
                                         &u32Pointer);
    offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, excepinfo_tree, drep,
                                         &u32Pointer2);
    offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, excepinfo_tree, drep,
                                         &u32Pointer3);
    offset = dissect_dcom_DWORD(tvb, offset, pinfo, excepinfo_tree, drep,
                                hf_dispatch_help_context, &u32HelpContext);
    offset = dissect_dcom_DWORD(tvb, offset, pinfo, excepinfo_tree, drep,
                                hf_dispatch_reserved32, &u32Reserved);
    offset = dissect_dcom_DWORD(tvb, offset, pinfo, excepinfo_tree, drep,
                                hf_dispatch_deferred_fill_in, &u32DeferredFillIn);
    offset = dissect_dcom_DWORD(tvb, offset, pinfo, excepinfo_tree, drep,
                                hf_dispatch_scode, &u32SCode);

    if (u32Pointer) {
        offset = dissect_dcom_BSTR(tvb, offset, pinfo, excepinfo_tree, drep,
                                   hf_dispatch_source, szName, sizeof(szName));
    }
    if (u32Pointer2) {
        offset = dissect_dcom_BSTR(tvb, offset, pinfo, excepinfo_tree, drep,
                                   hf_dispatch_description, szName, sizeof(szName));
    }
    if (u32Pointer3) {
        offset = dissect_dcom_BSTR(tvb, offset, pinfo, excepinfo_tree, drep,
                                   hf_dispatch_help_file, szName, sizeof(szName));
    }

    proto_item_append_text(excepinfo_item, ", SCode: %s",
                           val_to_str(u32SCode, dcom_hresult_vals, "Unknown (0x%08x)"));
    proto_item_set_len(excepinfo_item, offset - u32SubStart);
    /* end of ExcepInfo */

    offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
                                hf_dispatch_arg_err, &u32ArgErr);

    /* rgVarRef: VARIANT[u32VarRef] */
    offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep,
                                            &u32ArraySize);
    u32VarRef = u32ArraySize;
    u32VariableOffset = offset + u32ArraySize * 4;
    while(u32ArraySize--) {
        offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
                                             &u32Pointer);
        if (u32Pointer) {
            u32VariableOffset = dissect_dcom_VARIANT(tvb, u32VariableOffset, pinfo, tree, drep, hf_dispatch_varrefarg);
        }
    }
    offset = u32VariableOffset;

    /* HRESULT of call */
    offset = dissect_dcom_HRESULT(tvb, offset, pinfo, tree, drep,
                                  &u32HResult);

    col_append_fstr(pinfo->cinfo, COL_INFO, " SCode=%s VarRef=%u -> %s",
                    val_to_str(u32SCode, dcom_hresult_vals, "Unknown (0x%08x)"),
                    u32VarRef,
                    val_to_str(u32HResult, dcom_hresult_vals, "Unknown (0x%08x)") );

//.........这里部分代码省略.........

static int
dissect_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
{
    proto_item  *pitem = NULL;
    guint        control_type;
    guint8       unknown_control_type;
    guint8       uuid_size;
    guint16      uuid_dst;
    guint16      uuid_src;
    guint16      response_message;
    guint16      list_length;
    guint        i_item;

    proto_tree_add_item(tree, hf_btbnep_control_type, tvb, offset, 1, ENC_BIG_ENDIAN);
    control_type = tvb_get_guint8(tvb, offset);
    offset += 1;

    col_append_fstr(pinfo->cinfo, COL_INFO, " - %s", val_to_str_const(control_type, control_type_vals,  "Unknown type"));

    switch(control_type) {
        case 0x00: /* Command Not Understood */
            proto_tree_add_item(tree, hf_btbnep_unknown_control_type, tvb, offset, 1, ENC_BIG_ENDIAN);
            unknown_control_type = tvb_get_guint8(tvb, offset);
            offset += 1;

            col_append_fstr(pinfo->cinfo, COL_INFO, " - Unknown(%s)", val_to_str_const(unknown_control_type, control_type_vals,  "Unknown type"));

            break;
        case 0x01: /* Setup Connection Request */
            proto_tree_add_item(tree, hf_btbnep_uuid_size, tvb, offset, 1, ENC_BIG_ENDIAN);
            uuid_size = tvb_get_guint8(tvb, offset);
            offset += 1;

            pitem = proto_tree_add_item(tree, hf_btbnep_destination_service_uuid, tvb, offset, uuid_size, ENC_NA);
            uuid_dst = tvb_get_ntohs(tvb, offset);
            proto_item_append_text(pitem, " (%s)", val_to_str_ext(uuid_dst, &bluetooth_uuid_vals_ext,  "Unknown uuid"));
            offset += uuid_size;

            pitem = proto_tree_add_item(tree, hf_btbnep_source_service_uuid, tvb, offset, uuid_size, ENC_NA);
            uuid_src = tvb_get_ntohs(tvb, offset);
            proto_item_append_text(pitem, " (%s)", val_to_str_ext(uuid_src, &bluetooth_uuid_vals_ext,  "Unknown uuid"));
            offset += uuid_size;

            col_append_fstr(pinfo->cinfo, COL_INFO, " - dst: <%s>, src: <%s>",
                    val_to_str_ext(uuid_dst, &bluetooth_uuid_vals_ext,  "Unknown uuid"),
                    val_to_str_ext(uuid_src, &bluetooth_uuid_vals_ext,  "Unknown uuid"));
            break;
        case 0x02: /* Setup Connection Response */
            proto_tree_add_item(tree, hf_btbnep_setup_connection_response_message, tvb, offset, 2, ENC_BIG_ENDIAN);
            response_message = tvb_get_ntohs(tvb, offset);
            offset += 2;
            col_append_fstr(pinfo->cinfo, COL_INFO, " - %s",
                    val_to_str_const(response_message, setup_connection_response_message_vals,  "Unknown response message"));
            break;
        case 0x03: /* Filter Net Type Set */
            proto_tree_add_item(tree, hf_btbnep_list_length, tvb, offset, 2, ENC_BIG_ENDIAN);
            list_length = tvb_get_ntohs(tvb, offset);
            offset += 2;

            for (i_item = 0; i_item + 4 > i_item && i_item < list_length; i_item += 4) {
                proto_tree_add_item(tree, hf_btbnep_network_type_start, tvb, offset, 2, ENC_BIG_ENDIAN);
                offset += 2;

                proto_tree_add_item(tree, hf_btbnep_network_type_end, tvb, offset, 2, ENC_BIG_ENDIAN);
                offset += 2;
            }
            break;
        case 0x04: /* Filter Net Type Response */
            proto_tree_add_item(tree, hf_btbnep_filter_net_type_response_message, tvb, offset, 2, ENC_BIG_ENDIAN);
            response_message = tvb_get_ntohs(tvb, offset);
            offset += 2;
            col_append_fstr(pinfo->cinfo, COL_INFO, " - %s",
                    val_to_str_const(response_message, filter_net_type_response_message_vals,  "Unknown response message"));
            break;
        case 0x05: /*Filter Multi Addr Set*/
            proto_tree_add_item(tree, hf_btbnep_list_length, tvb, offset, 2, ENC_BIG_ENDIAN);
            list_length = tvb_get_ntohs(tvb, offset);
            offset += 2;

            for (i_item = 0; i_item + 12 > i_item && i_item < list_length; i_item += 12) {
                proto_tree_add_item(tree, hf_btbnep_multicast_address_start, tvb, offset, 6, ENC_NA);
                offset += 6;

                proto_tree_add_item(tree, hf_btbnep_multicast_address_end, tvb, offset, 6, ENC_NA);
                offset += 6;
            }
            break;
        case 0x06: /* Filter Multi Addr Response */
            proto_tree_add_item(tree, hf_btbnep_filter_multi_addr_response_message, tvb, offset, 2, ENC_BIG_ENDIAN);
            response_message = tvb_get_ntohs(tvb, offset);
            offset += 2;
            col_append_fstr(pinfo->cinfo, COL_INFO, " - %s",
                    val_to_str_const(response_message, filter_multi_addr_response_message_vals,  "Unknown response message"));
            break;

    };

    return offset;
}

static int
add_option_info(tvbuff_t *tvb, int pos, proto_tree *tree, proto_item *ti)
{
    guint8      tag, length, fcs_err = 0, encr = 0, seen_fcs_err = 0;
    proto_tree *tag_tree;

    /*
     * Read all option tags in an endless loop. If the packet is malformed this
     * loop might be a problem.
     */
    while (TRUE) {
        tag = tvb_get_guint8(tvb, pos);
        if ((tag != TZSP_HDR_PAD) && (tag != TZSP_HDR_END)) {
            length = tvb_get_guint8(tvb, pos+1);
            tag_tree = proto_tree_add_subtree(tree, tvb, pos, 2+length, ett_tag, NULL, val_to_str_const(tag, option_tag_vals, "Unknown"));
        } else {
            tag_tree = proto_tree_add_subtree(tree, tvb, pos, 1, ett_tag, NULL, val_to_str_const(tag, option_tag_vals, "Unknown"));
            length = 0;
        }

        proto_tree_add_item(tag_tree, hf_option_tag, tvb, pos, 1, ENC_BIG_ENDIAN);
        pos++;
        if ((tag != TZSP_HDR_PAD) && (tag != TZSP_HDR_END)) {
            proto_tree_add_item(tag_tree, hf_option_length, tvb, pos, 1, ENC_BIG_ENDIAN);
            pos++;
        }

        switch (tag) {
        case TZSP_HDR_PAD:
            break;

        case TZSP_HDR_END:
            /* Fill in header with information from other tags. */
            if (seen_fcs_err) {
                proto_item_append_text(ti,"%s", fcs_err?"FCS Error":(encr?"Encrypted":"Good"));
            }
            return pos;

        case TZSP_HDR_ORIGINAL_LENGTH:
            proto_tree_add_item(tag_tree, hf_original_length, tvb, pos, 2, ENC_BIG_ENDIAN);
            break;

        case WLAN_RADIO_HDR_SIGNAL:
            proto_tree_add_item(tag_tree, hf_signal, tvb, pos, 1, ENC_BIG_ENDIAN);
            break;

        case WLAN_RADIO_HDR_NOISE:
            proto_tree_add_item(tag_tree, hf_silence, tvb, pos, 1, ENC_BIG_ENDIAN);
            break;

        case WLAN_RADIO_HDR_RATE:
            proto_tree_add_item(tag_tree, hf_rate, tvb, pos, 1, ENC_BIG_ENDIAN);
            break;

        case WLAN_RADIO_HDR_TIMESTAMP:
            proto_tree_add_item(tag_tree, hf_time, tvb, pos, 4, ENC_BIG_ENDIAN);
            break;

        case WLAN_RADIO_HDR_MSG_TYPE:
            proto_tree_add_item(tag_tree, hf_status_msg_type, tvb, pos, 1, ENC_BIG_ENDIAN);
            break;

        case WLAN_RADIO_HDR_CF:
            proto_tree_add_item(tag_tree, hf_status_pcf, tvb, pos, 1, ENC_NA);
            break;

        case WLAN_RADIO_HDR_UN_DECR:
            proto_tree_add_item(tag_tree, hf_status_undecrypted, tvb, pos, 1, ENC_NA);
            encr = tvb_get_guint8(tvb, pos);
            break;

        case WLAN_RADIO_HDR_FCS_ERR:
            seen_fcs_err = 1;
            proto_tree_add_item(tag_tree, hf_status_fcs_error, tvb, pos, 1, ENC_NA);
            fcs_err = tvb_get_guint8(tvb, pos);
            break;

        case WLAN_RADIO_HDR_CHANNEL:
            proto_tree_add_item(tag_tree, hf_channel, tvb, pos, 1, ENC_BIG_ENDIAN);
            break;

        case TZSP_HDR_SENSOR:
            proto_tree_add_item(tag_tree, hf_sensormac, tvb, pos, 6, ENC_NA);
            break;

        default:
            proto_tree_add_item(tag_tree, hf_unknown, tvb, pos, length, ENC_NA);
            break;
        }

        pos += length;
    }
}

int
dissect_IDispatch_Invoke_rqst(tvbuff_t *tvb, int offset,
                              packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
    guint32 u32DispIdMember;
    e_uuid_t riid;
    guint32 u32Lcid;
    guint32 u32Flags;
    guint32 u32Args;
    guint32 u32NamedArgs;
    guint32 u32Pointer;
    guint32 u32Pointer2;
    guint32 u32ArraySize;
    guint32 u32VariableOffset;
    guint32 u32VarRef;
    guint32 u32VarRefIdx;
    guint32 u32TmpOffset;
    guint32 u32SubStart;

    proto_item *feature_item;
    proto_tree *feature_tree;
    proto_item *dispparams_item;
    proto_tree *dispparams_tree;


    offset = dissect_dcom_this(tvb, offset, pinfo, tree, drep);

    offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
                                hf_dispatch_id, &u32DispIdMember);
    col_append_fstr(pinfo->cinfo, COL_INFO, " ID=0x%x", u32DispIdMember);

    offset = dissect_dcom_UUID(tvb, offset, pinfo, tree, drep,
                               hf_dispatch_riid, &riid);
    offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
                                hf_dispatch_lcid, &u32Lcid);

    /* dispatch flags */
    u32TmpOffset = dissect_dcom_DWORD(tvb, offset, pinfo, NULL, drep,
                                      hf_dispatch_flags, &u32Flags);
    feature_item = proto_tree_add_uint (tree, hf_dispatch_flags, tvb, offset, 4, u32Flags);
    feature_tree = proto_item_add_subtree (feature_item, ett_dispatch_flags);
    if (feature_tree) {
        proto_tree_add_boolean (feature_tree, hf_dispatch_flags_propputref, tvb, offset, 4, u32Flags);
        proto_tree_add_boolean (feature_tree, hf_dispatch_flags_propput, tvb, offset, 4, u32Flags);
        proto_tree_add_boolean (feature_tree, hf_dispatch_flags_propget, tvb, offset, 4, u32Flags);
        proto_tree_add_boolean (feature_tree, hf_dispatch_flags_method, tvb, offset, 4, u32Flags);
    }

    if (u32Flags & DISPATCH_FLAGS_METHOD) {
        proto_item_append_text(feature_item, ", Method");
        col_append_str(pinfo->cinfo, COL_INFO, " Method");
    }
    if (u32Flags & DISPATCH_FLAGS_PROPGET) {
        proto_item_append_text(feature_item, ", PropertyGet");
        col_append_str(pinfo->cinfo, COL_INFO, " PropertyGet");
    }
    if (u32Flags & DISPATCH_FLAGS_PROPPUT) {
        proto_item_append_text(feature_item, ", PropertyPut");
        col_append_str(pinfo->cinfo, COL_INFO, " PropertyPut");
    }
    if (u32Flags & DISPATCH_FLAGS_PROPPUTREF) {
        proto_item_append_text(feature_item, ", PropertyPutRef");
        col_append_str(pinfo->cinfo, COL_INFO, " PropertyPutRef");
    }

    offset = u32TmpOffset;

    dispparams_item = proto_tree_add_item(tree, hf_dispatch_dispparams, tvb, offset, 0, ENC_NA);
    dispparams_tree = proto_item_add_subtree (dispparams_item, ett_dispatch_params);
    u32SubStart = offset;

    /* DISPPARAMS */
    /* VARIANT rgvarg[u32Args] */
    offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, dispparams_tree, drep,
                                         &u32Pointer);

    /* DISPID rgdispidNamedArgs[u32NamedArgs] */
    offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, dispparams_tree, drep,
                                         &u32Pointer2);

    offset = dissect_dcom_DWORD(tvb, offset, pinfo, dispparams_tree, drep,
                                hf_dispatch_args, &u32Args);
    offset = dissect_dcom_DWORD(tvb, offset, pinfo, dispparams_tree, drep,
                                hf_dispatch_named_args, &u32NamedArgs);

    if (u32Pointer) {
        offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, dispparams_tree, drep,
                                                &u32ArraySize);
        u32VariableOffset = offset + u32ArraySize * 4;
        while(u32ArraySize--) {
            offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, dispparams_tree, drep,
                                                 &u32Pointer);
            if (u32Pointer) {
                u32VariableOffset = dissect_dcom_VARIANT(tvb, u32VariableOffset, pinfo, dispparams_tree, drep, hf_dispatch_arg);
            }
        }
        offset = u32VariableOffset;
    }

    /* DISPID rgdispidNamedArgs[u32NamedArgs] */
//.........这里部分代码省略.........

static void
dissect_rsp_flags(proto_tree *parent_tree, tvbuff_t *tvb, int offset)
{
    proto_item *item;
    proto_tree *tree;
    gboolean    bidi_resid_present = FALSE;
    guint8      flags;

    item = proto_tree_add_item(parent_tree, hf_fcp_rspflags, tvb, offset, 1, ENC_LITTLE_ENDIAN);
    tree = proto_item_add_subtree(item, ett_fcp_rsp_flags);

    flags = tvb_get_guint8(tvb, offset);

    if (!flags)
        proto_item_append_text(item, " (No values set)");

    /* BIDI RSP */
    proto_tree_add_boolean(tree, hf_fcp_rsp_flags_bidi, tvb, offset, 1, flags);
    if (flags & 0x80) {
        bidi_resid_present = TRUE;
        proto_item_append_text(item, " BIDI_RSP");
        if (flags & (~( 0x80 )))
            proto_item_append_text(item, ",");
    }
    flags &= (~( 0x80 ));

    /* these two bits are only defined if the bidi bit is set */
    if (bidi_resid_present) {
        /* BIDI READ RESID UNDER */
        proto_tree_add_boolean(tree, hf_fcp_rsp_flags_bidi_rru, tvb, offset, 1, flags);
        if (flags & 0x40) {
            proto_item_append_text(item, " BIDI_RRU");
            if (flags & (~( 0x40 )))
                proto_item_append_text(item, ",");
        }
        flags &= (~( 0x40 ));

        /* BIDI READ RESID OVER */
        proto_tree_add_boolean(tree, hf_fcp_rsp_flags_bidi_rro, tvb, offset, 1, flags);
        if (flags & 0x20) {
            proto_item_append_text(item, " BIDI_RRO");
            if (flags & (~( 0x20 )))
                proto_item_append_text(item, ",");
        }
        flags &= (~( 0x20 ));
    }

    /* Conf Req */
    proto_tree_add_boolean(tree, hf_fcp_rsp_flags_conf_req, tvb, offset, 1, flags);
    if (flags & 0x10) {
        proto_item_append_text(item, " CONF REQ");
        if (flags & (~( 0x10 )))
            proto_item_append_text(item, ",");
    }
    flags &= (~( 0x10 ));

    /* Resid Under */
    proto_tree_add_boolean(tree, hf_fcp_rsp_flags_resid_under, tvb, offset, 1, flags);
    if (flags & 0x08) {
        proto_item_append_text(item, " RESID UNDER");
        if (flags & (~( 0x08 )))
            proto_item_append_text(item, ",");
    }
    flags &= (~( 0x08 ));

    /* Resid Over */
    proto_tree_add_boolean(tree, hf_fcp_rsp_flags_resid_over, tvb, offset, 1, flags);
    if (flags & 0x04) {
        proto_item_append_text(item, " RESID OVER");
        if (flags & (~( 0x04 )))
            proto_item_append_text(item, ",");
    }
    flags &= (~( 0x04 ));

    /* SNS len valid */
    proto_tree_add_boolean(tree, hf_fcp_rsp_flags_sns_vld, tvb, offset, 1, flags);
    if (flags & 0x02) {
        proto_item_append_text(item, " SNS VLD");
        if (flags & (~( 0x02 )))
            proto_item_append_text(item, ",");
    }
    flags &= (~( 0x02 ));

    /* rsp len valid */
    proto_tree_add_boolean(tree, hf_fcp_rsp_flags_res_vld, tvb, offset, 1, flags);
    if (flags & 0x01) {
        proto_item_append_text(item, " RES VLD");
        if (flags & (~( 0x01 )))
            proto_item_append_text(item, ",");
    }
    flags &= (~( 0x01 ));

    if (flags) {
        proto_item_append_text(item, " Unknown bitmap value 0x%x", flags);
    }
}

static void
dissect_task_mgmt_flags(packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, int offset)
{
    proto_item *item;
    proto_tree *tree;

    guint8 flags;

    item = proto_tree_add_item(parent_tree, hf_fcp_taskmgmt, tvb, offset, 1, ENC_LITTLE_ENDIAN);
    tree = proto_item_add_subtree(item, ett_fcp_taskmgmt);

    flags = tvb_get_guint8(tvb, offset);

    if (!flags)
        proto_item_append_text(item, " (No values set)");

    proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_obsolete, tvb, offset, 1, flags);
    if (flags & 0x80) {
        proto_item_append_text(item, "  OBSOLETE");
        col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP OBSOLETE] ");
    }
    flags &= (~( 0x80 ));

    proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_clear_aca, tvb, offset, 1, flags);
    if (flags & 0x40) {
        proto_item_append_text(item, "  CLEAR ACA");
        col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP CLEAR_ACA] ");
    }
    flags &= (~( 0x40 ));

    proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_target_reset, tvb, offset, 1, flags);
    if (flags & 0x20) {
        proto_item_append_text(item, "  TARGET RESET");
        col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP TARGET_RESET] ");
    }
    flags &= (~( 0x20 ));

    proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_lu_reset, tvb, offset, 1, flags);
    if (flags & 0x10) {
        proto_item_append_text(item, "  LU RESET");
        col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP LU_RESET] ");
    }
    flags &= (~( 0x10 ));

    proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_rsvd, tvb, offset, 1, flags);
    if (flags & 0x08) {
        proto_item_append_text(item, "  RSVD");
        col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP RSVD] ");
    }
    flags &= (~( 0x08 ));

    proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_clear_task_set, tvb, offset, 1, flags);
    if (flags & 0x04) {
        proto_item_append_text(item, "  CLEAR TASK SET");
        col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP CLEAR_TASK_SET] ");
    }
    flags &= (~( 0x04 ));

    proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_abort_task_set, tvb, offset, 1, flags);
    if (flags & 0x02) {
        proto_item_append_text(item, "  ABORT TASK SET");
        col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP ABORT_TASK_SET] ");
    }
    flags &= (~( 0x02 ));

    if (flags) {
        proto_item_append_text(item, " Unknown bitmap value 0x%x", flags);
    }
}

static int 
add_option_info(tvbuff_t *tvb, int pos, proto_tree *tree, proto_item *ti)
{
	guint8 tag, length, fcs_err = 0, encr = 0, seen_fcs_err = 0;
	
	/*
	 * Read all option tags in an endless loop. If the packet is malformed this
	 * loop might be a problem.
	 */
	while (TRUE) {
		tag = tvb_get_guint8(tvb, pos++);

		switch (tag) {
		case TZSP_HDR_PAD:
			length = 0;
			break;

		case TZSP_HDR_END:
			/* Fill in header with information from other tags. */
			if (seen_fcs_err) {
				if (tree)
					proto_item_append_text(ti,"%s", fcs_err?"FCS Error":(encr?"Encrypted":"Good"));
			}
			return pos;

		case TZSP_HDR_ORIGINAL_LENGTH:
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_int (tree, hf_original_length, tvb, pos-2, 4,
						tvb_get_ntohs(tvb, pos));
			pos += length;
			break;

		case WLAN_RADIO_HDR_SIGNAL:
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_int (tree, hf_signal, tvb, pos-2, 3,
						(char)tvb_get_guint8(tvb, pos));
			pos += length;
			break;

		case WLAN_RADIO_HDR_NOISE:
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_int (tree, hf_silence, tvb, pos-2, 3,
						(char)tvb_get_guint8(tvb, pos));
			pos += length;
			break;

		case WLAN_RADIO_HDR_RATE:
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_uint (tree, hf_rate, tvb, pos-2, 3,
							tvb_get_guint8(tvb, pos));
			pos += length;
			break;

		case WLAN_RADIO_HDR_TIMESTAMP:
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_uint (tree, hf_time, tvb, pos-2, 6,
							tvb_get_ntohl(tvb, pos));
			pos += length;
			break;

		case WLAN_RADIO_HDR_MSG_TYPE:
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_uint (tree, hf_status_msg_type, tvb, pos-2, 3,
						tvb_get_guint8(tvb, pos));
			pos += length;
			break;

		case WLAN_RADIO_HDR_CF:
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_boolean (tree, hf_status_pcf, tvb, pos-2, 3,
						tvb_get_guint8(tvb, pos));
			pos += length;
			break;

		case WLAN_RADIO_HDR_UN_DECR:
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_boolean (tree, hf_status_undecrypted, tvb, pos-2, 3,
						tvb_get_guint8(tvb, pos));
			encr = tvb_get_guint8(tvb, pos);
			pos += length;
			break;

		case WLAN_RADIO_HDR_FCS_ERR:
			seen_fcs_err = 1;
			length = tvb_get_guint8(tvb, pos++);
			if (tree)
				proto_tree_add_boolean (tree, hf_status_fcs_error, tvb, pos-2, 3,
						tvb_get_guint8(tvb, pos));
			fcs_err = tvb_get_guint8(tvb, pos);
			pos += length;
			break;

//.........这里部分代码省略.........

//.........这里部分代码省略.........
            usbip_trans->devid = devid;
            usbip_trans->dir = dir;
            usbip_trans->ep = ep;
            usbip_trans->seqnum = seqnum;
            usbip_trans->cmd_frame = pinfo->num;
            usbip_trans->ret_frame = 0;
            usbip_trans->unlink_seqnum = 0;
            wmem_tree_insert32(usbip_info->pdus, seqnum, (void *) usbip_trans);
        } else {
            usbip_trans = (usbip_transaction_t *) wmem_tree_lookup32(usbip_info->pdus, seqnum);
            if (usbip_trans)
                usbip_trans->ret_frame = pinfo->num;
        }
    } else {
        usbip_trans = (usbip_transaction_t *) wmem_tree_lookup32(usbip_info->pdus, seqnum);
    }

    if (!usbip_trans) {
        usbip_trans = wmem_new(wmem_packet_scope(), usbip_transaction_t);
        usbip_trans->cmd_frame = 0;
        usbip_trans->ret_frame = 0;
        usbip_trans->devid = 0;
        usbip_trans->unlink_seqnum = 0;
        usbip_trans->seqnum = seqnum;
    }

    /* only the OP_CMD_SUBMIT has a valid devid - in all other case we have to restore it from the transaction */
    if (command == OP_RET_SUBMIT || command == OP_RET_UNLINK) {
        devid = usbip_trans->devid;
        ep = usbip_trans->ep;
        dir = usbip_trans->dir;
    }

    ti = proto_tree_add_uint(tree, hf_usbip_cmd_frame, NULL, 0, 0,
                             usbip_trans->cmd_frame);
    PROTO_ITEM_SET_GENERATED(ti);
    ti = proto_tree_add_uint(tree, hf_usbip_ret_frame, NULL, 0, 0,
                             usbip_trans->ret_frame);
    PROTO_ITEM_SET_GENERATED(ti);
    ti = proto_tree_add_uint(tree, hf_usbip_devid, NULL, 0, 0, devid);
    PROTO_ITEM_SET_GENERATED(ti);
    ti = proto_tree_add_uint(tree, hf_usbip_direction, NULL, 0, 0, dir);
    PROTO_ITEM_SET_GENERATED(ti);
    ti = proto_tree_add_uint(tree, hf_usbip_ep, NULL, 0, 0, ep);
    PROTO_ITEM_SET_GENERATED(ti);

    proto_tree_add_item(tree, hf_usbip_devid, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;
    proto_tree_add_item(tree, hf_usbip_direction, tvb, offset, 4,
                        ENC_BIG_ENDIAN);
    offset += 4;
    proto_tree_add_item(tree, hf_usbip_ep, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;

    header.ep = ep;
    header.dir = dir;
    header.devid = devid & 0x00ff;
    header.busid = devid >> 16;

    switch (command) {

    case OP_CMD_SUBMIT:
        offset = dissect_cmd_submit(pinfo, tree, tvb, offset);
        dissect_usb_common(tvb, pinfo, orig, USB_HEADER_USBIP, &header);
        break;

    case OP_CMD_UNLINK:
        offset = dissect_cmd_unlink(pinfo, tree, tvb, offset, usbip_info,
                                    usbip_trans);
        break;

    case OP_RET_SUBMIT: {
        guint32 status;

        status = tvb_get_ntohl(tvb, offset);
        offset = dissect_ret_submit(pinfo, tree, tvb, offset);
        if (status == 0)
            dissect_usb_common(tvb, pinfo, orig, USB_HEADER_USBIP, &header);
        break;
    }

    case OP_RET_UNLINK:
        offset = dissect_ret_unlink(pinfo, tree, tvb, offset, usbip_info,
                                    usbip_trans->unlink_seqnum);
        break;

    default:
        proto_tree_add_item(tree, hf_usbip_urb_data, tvb, offset, -1, ENC_NA);
        offset = tvb_reported_length_remaining(tvb, offset);
        expert_add_info_format(
            pinfo, ti, &ei_usbip,
            "Dissector for USBIP Command"
            " (%x) code not implemented, Contact"
            " Wireshark developers if you want this supported",
            command);
        proto_item_append_text(ti, ": Undecoded");
        break;
    }
    return offset;
}

//.........这里部分代码省略.........
        }
        else {
            /* Although, only type 1 corresponds to data, if another value is present, assume it is dissected the same. */
            zep_header_len = ZEP_V2_HEADER_LEN;
            zep_data.channel_id = tvb_get_guint8(tvb, 4);
            zep_data.device_id = tvb_get_ntohs(tvb, 5);
            zep_data.lqi_mode = tvb_get_guint8(tvb, 7)?1:0;
            zep_data.lqi = tvb_get_guint8(tvb, 8);
            ntp_to_nstime(tvb, 9, &(zep_data.ntp_time));
            zep_data.seqno = tvb_get_ntohl(tvb, 17);
            ieee_packet_len = (tvb_get_guint8(tvb, ZEP_V2_HEADER_LEN - 1) & ZEP_LENGTH_MASK);
        }
    }

#if 0
/*??dat*/
    if (zep_data.ntp_time.secs && zep_data.ntp_time.nsecs) {
        pinfo->fd->abs_ts = zep_data.ntp_time;
    }
#endif

    if(ieee_packet_len < tvb_length(tvb)-zep_header_len){
        /* Packet's length is mis-reported, abort dissection */
        call_dissector(data_handle, tvb, pinfo, tree);
        return;
    }

    /*  Enter name info protocol field */
    col_set_str(pinfo->cinfo, COL_PROTOCOL, (zep_data.version==1)?"ZEP":"ZEPv2");

    /*  Enter name info protocol field */
    if (!((zep_data.version>=2) && (zep_data.type==ZEP_V2_TYPE_ACK)))
        col_add_fstr(pinfo->cinfo, COL_INFO, "Encapsulated ZigBee Packet [Channel]=%i [Length]=%i", zep_data.channel_id, ieee_packet_len);
    else
        col_add_fstr(pinfo->cinfo, COL_INFO, "Ack, Sequence Number: %i", zep_data.seqno);

    if(tree){
        /*  Create subtree for the ZEP Header */
        if (!((zep_data.version>=2) && (zep_data.type==ZEP_V2_TYPE_ACK))) {
            proto_root = proto_tree_add_protocol_format(tree, proto_zep, tvb, 0, zep_header_len, "ZigBee Encapsulation Protocol, Channel: %i, Length: %i", zep_data.channel_id, ieee_packet_len);
        }
        else {
            proto_root = proto_tree_add_protocol_format(tree, proto_zep, tvb, 0, zep_header_len, "ZigBee Encapsulation Protocol, Ack");
        }
        zep_tree = proto_item_add_subtree(proto_root, ett_zep);

        /*  Display the information in the subtree */
        proto_tree_add_text(zep_tree, tvb, 0, 2, "Protocol ID String: EX");
        if (zep_data.version==1) {
            proto_tree_add_uint(zep_tree, hf_zep_version, tvb, 2, 1, zep_data.version);
            proto_tree_add_uint(zep_tree, hf_zep_channel_id, tvb, 3, 1, zep_data.channel_id);
            proto_tree_add_uint(zep_tree, hf_zep_device_id, tvb, 4, 2, zep_data.device_id);
            proto_tree_add_boolean_format(zep_tree, hf_zep_lqi_mode, tvb, 6, 1, zep_data.lqi_mode, "LQI/CRC Mode: %s", zep_data.lqi_mode?"CRC":"LQI");
            if(!(zep_data.lqi_mode)){
                proto_tree_add_uint(zep_tree, hf_zep_lqi, tvb, 7, 1, zep_data.lqi);
            }
            proto_tree_add_text(zep_tree, tvb, 7+((zep_data.lqi_mode)?0:1), 7+((zep_data.lqi_mode)?1:0), "Reserved Fields");
        }
        else {
            proto_tree_add_uint(zep_tree, hf_zep_version, tvb, 2, 1, zep_data.version);
            if (zep_data.type == ZEP_V2_TYPE_ACK) {
                proto_tree_add_uint_format_value(zep_tree, hf_zep_type, tvb, 3, 1, zep_data.type, "%i (Ack)", ZEP_V2_TYPE_ACK);
                proto_tree_add_uint(zep_tree, hf_zep_seqno, tvb, 4, 4, zep_data.seqno);
            }
            else {
                proto_tree_add_uint_format_value(zep_tree, hf_zep_type, tvb, 3, 1, zep_data.type, "%i (%s)", zep_data.type, (zep_data.type==ZEP_V2_TYPE_DATA)?"Data":"Reserved");
                proto_tree_add_uint(zep_tree, hf_zep_channel_id, tvb, 4, 1, zep_data.channel_id);
                proto_tree_add_uint(zep_tree, hf_zep_device_id, tvb, 5, 2, zep_data.device_id);
                proto_tree_add_boolean_format(zep_tree, hf_zep_lqi_mode, tvb, 7, 1, zep_data.lqi_mode, "LQI/CRC Mode: %s", zep_data.lqi_mo