path: root/epan/dissectors/packet-vxi11.c

/* packet-vxi11.c
 * Routines for VXI-11 (TCP/IP Instrument Protocol) dissection.
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * VXI-11 protocol dissector
 * By Jens Kilian <jens.kilian@verigy.com>
 * Copyright 2009 Verigy Deutschland GmbH
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#include "config.h"

#include "packet-rpc.h"
#include <epan/to_str.h>

/*
 * For the protocol specifications, see
 *     http://www.vxibus.org/files/VXI_Specs/VXI-11.zip
 *
 * This dissector handles the basic Network Instrument protocol as defined
 * in VXI-11, and parts of the TCP/IP-IEEE 488.1 Interface spec (VXI-11.2).
 */

/* Core protocol. */

#define VXI11_CORE_ADDRESS_FAMILY_TCP 0
#define VXI11_CORE_ADDRESS_FAMILY_UDP 1

#define VXI11_CORE_CMD_SEND_COMMAND 0x020000
#define VXI11_CORE_CMD_BUS_STATUS   0x020001
#define VXI11_CORE_CMD_ATN_CONTROL  0x020002
#define VXI11_CORE_CMD_REN_CONTROL  0x020003
#define VXI11_CORE_CMD_PASS_CONTROL 0x020004
#define VXI11_CORE_CMD_BUS_ADDRESS  0x02000a
#define VXI11_CORE_CMD_IFC_CONTROL  0x020010

#define VXI11_CORE_ERROR_NO_ERROR 0
#define VXI11_CORE_ERROR_SYNTAX_ERROR 1
#define VXI11_CORE_ERROR_DEVICE_NOT_ACCESSIBLE 3
#define VXI11_CORE_ERROR_INVALID_ID 4
#define VXI11_CORE_ERROR_PARAMETER_ERROR 5
#define VXI11_CORE_ERROR_CHANNEL_NOT_ESTABLISHED 6
#define VXI11_CORE_ERROR_OPERATION_NOT_SUPPORTED 8
#define VXI11_CORE_ERROR_OUT_OF_RESOURCES 9
#define VXI11_CORE_ERROR_DEVICE_LOCKED 11
#define VXI11_CORE_ERROR_NO_LOCK_HELD 12
#define VXI11_CORE_ERROR_IO_TIMEOUT 15
#define VXI11_CORE_ERROR_IO_ERROR 17
#define VXI11_CORE_ERROR_INVALID_ADDRESS 21
#define VXI11_CORE_ERROR_ABORT 23
#define VXI11_CORE_ERROR_CHANNEL_ALREADY_ESTABLISHED 29

#define VXI11_CORE_FLAG_WAITLOCK   (1 << 0)
#define VXI11_CORE_FLAG_END        (1 << 3)
#define VXI11_CORE_FLAG_TERMCHRSET (1 << 7)

#define VXI11_CORE_REASON_REQCNT   (1 << 0)
#define VXI11_CORE_REASON_CHR      (1 << 1)
#define VXI11_CORE_REASON_END      (1 << 2)

#define VXI11_CORE_PROC_NULL 0
#define VXI11_CORE_PROC_CREATE_LINK 10
#define VXI11_CORE_PROC_DEVICE_WRITE 11
#define VXI11_CORE_PROC_DEVICE_READ 12
#define VXI11_CORE_PROC_DEVICE_READSTB 13
#define VXI11_CORE_PROC_DEVICE_TRIGGER 14
#define VXI11_CORE_PROC_DEVICE_CLEAR 15
#define VXI11_CORE_PROC_DEVICE_REMOTE 16
#define VXI11_CORE_PROC_DEVICE_LOCAL 17
#define VXI11_CORE_PROC_DEVICE_LOCK 18
#define VXI11_CORE_PROC_DEVICE_UNLOCK 19
#define VXI11_CORE_PROC_DEVICE_ENABLE_SRQ 20
#define VXI11_CORE_PROC_DEVICE_DOCMD 22
#define VXI11_CORE_PROC_DESTROY_LINK 23
#define VXI11_CORE_PROC_CREATE_INTR_CHAN 25
#define VXI11_CORE_PROC_DESTROY_INTR_CHAN 26

#define VXI11_CORE_PROGRAM 0x0607AF
#define VXI11_CORE_VERSION 1

#define MAX_DATA_SHOW_SIZE 70


void proto_register_vxi11_core(void);
void proto_reg_handoff_vxi11_core(void);
void proto_register_vxi11_async(void);
void proto_reg_handoff_vxi11_async(void);
void proto_register_vxi11_intr(void);
void proto_reg_handoff_vxi11_intr(void);

static int proto_vxi11_core = -1;

static gint ett_vxi11_core = -1;
static gint ett_vxi11_core_flags = -1;
static gint ett_vxi11_core_reason = -1;

static int hf_vxi11_core_procedure_v1 = -1;
static int hf_vxi11_core_abort_port = -1;
static int hf_vxi11_core_client_id = -1;
static int hf_vxi11_core_cmd = -1;
static int hf_vxi11_core_data = -1;
static int hf_vxi11_core_device = -1;
static int hf_vxi11_core_enable = -1;
static int hf_vxi11_core_error = -1;
static int hf_vxi11_core_flags = -1;
static int hf_vxi11_core_flag_wait_lock = -1;
static int hf_vxi11_core_flag_end = -1;
static int hf_vxi11_core_flag_term_chr_set = -1;
static int hf_vxi11_core_handle = -1;
static int hf_vxi11_core_host_addr = -1;
static int hf_vxi11_core_host_port = -1;
static int hf_vxi11_core_io_timeout = -1;
static int hf_vxi11_core_lid = -1;
static int hf_vxi11_core_lock_device = -1;
static int hf_vxi11_core_lock_timeout = -1;
static int hf_vxi11_core_max_recv_size = -1;
static int hf_vxi11_core_network_order = -1;
static int hf_vxi11_core_prog_family = -1;
static int hf_vxi11_core_prog_num = -1;
static int hf_vxi11_core_prog_vers = -1;
static int hf_vxi11_core_reason = -1;
static int hf_vxi11_core_reason_req_cnt = -1;
static int hf_vxi11_core_reason_chr = -1;
static int hf_vxi11_core_reason_end = -1;
static int hf_vxi11_core_size = -1;
static int hf_vxi11_core_stb = -1;
static int hf_vxi11_core_term_char = -1;

static const value_string vxi11_core_error_vals[] = {
    { VXI11_CORE_ERROR_NO_ERROR, "No Error" },
    { VXI11_CORE_ERROR_SYNTAX_ERROR, "Syntax Error" },
    { VXI11_CORE_ERROR_DEVICE_NOT_ACCESSIBLE, "Device Not Accessible" },
    { VXI11_CORE_ERROR_INVALID_ID, "Invalid ID" },
    { VXI11_CORE_ERROR_PARAMETER_ERROR, "Parameter Error" },
    { VXI11_CORE_ERROR_CHANNEL_NOT_ESTABLISHED, "Channel Not Established" },
    { VXI11_CORE_ERROR_OPERATION_NOT_SUPPORTED, "Operation Not Supported" },
    { VXI11_CORE_ERROR_OUT_OF_RESOURCES, "Out Of Resources" },
    { VXI11_CORE_ERROR_DEVICE_LOCKED, "Device Locked" },
    { VXI11_CORE_ERROR_NO_LOCK_HELD, "No Lock Held" },
    { VXI11_CORE_ERROR_IO_TIMEOUT, "I/O Timeout" },
    { VXI11_CORE_ERROR_IO_ERROR, "I/O Error" },
    { VXI11_CORE_ERROR_INVALID_ADDRESS, "Invalid Address" },
    { VXI11_CORE_ERROR_ABORT, "Abort" },
    { VXI11_CORE_ERROR_CHANNEL_ALREADY_ESTABLISHED, "Channel Already Established" },
    { 0, NULL }
};

static const value_string vxi11_core_cmd_vals[] = {
    { VXI11_CORE_CMD_SEND_COMMAND, "SEND_COMMAND" },
    { VXI11_CORE_CMD_BUS_STATUS,   "BUS_STATUS"   },
    { VXI11_CORE_CMD_ATN_CONTROL,  "ATN_CONTROL"  },
    { VXI11_CORE_CMD_REN_CONTROL,  "REN_CONTROL"  },
    { VXI11_CORE_CMD_PASS_CONTROL, "PASS_CONTROL" },
    { VXI11_CORE_CMD_BUS_ADDRESS,  "BUS_ADDRESS"  },
    { VXI11_CORE_CMD_IFC_CONTROL,  "IFC_CONTROL"  },
    { 0, NULL }
};


/* Asynchronous-abort protocol. */

#define VXI11_ASYNC_PROC_NULL 0
#define VXI11_ASYNC_PROC_DEVICE_ABORT 1

#define VXI11_ASYNC_PROGRAM 0x0607B0
#define VXI11_ASYNC_VERSION 1

static int proto_vxi11_async = -1;

static gint ett_vxi11_async = -1;

static int hf_vxi11_async_procedure_v1 = -1;


/* Interrupt protocol. */

#define VXI11_INTR_PROC_NULL 0
#define VXI11_INTR_PROC_DEVICE_INTR_SRQ 30

#define VXI11_INTR_PROGRAM 0x0607B1
#define VXI11_INTR_VERSION 1

static int proto_vxi11_intr = -1;

static gint ett_vxi11_intr = -1;

static int hf_vxi11_intr_procedure_v1 = -1;
static int hf_vxi11_intr_handle = -1;


/* Helper routines for dissecting common fields. */

static int
dissect_error(tvbuff_t *tvb,
              int offset,
              packet_info *pinfo,
              proto_tree *tree,
              const gchar *packet_type,
              guint32 *error)
{
    const gchar *errstr;

    *error = tvb_get_ntohl(tvb, offset);
    errstr = val_to_str(*error, vxi11_core_error_vals, "Error %d");

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_error, offset);

    proto_item_append_text(tree, " (%s) %s", packet_type, errstr);
    col_append_fstr(pinfo->cinfo, COL_INFO, " %s", errstr);

    return offset;
}

static int
dissect_flags(tvbuff_t *tvb, int offset, proto_tree *tree)
{
    if (tree)
    {
        guint32 flags =
            tvb_get_ntohl(tvb, offset);
        proto_item *flags_item =
            proto_tree_add_item(tree, hf_vxi11_core_flags, tvb, offset, 4, ENC_BIG_ENDIAN);

        if (flags_item)
        {
            proto_tree *flags_tree =
                proto_item_add_subtree(flags_item, ett_vxi11_core_flags);

            proto_tree_add_item(flags_tree, hf_vxi11_core_flag_wait_lock, tvb, offset, 4, ENC_BIG_ENDIAN);
            proto_tree_add_item(flags_tree, hf_vxi11_core_flag_end, tvb, offset, 4, ENC_BIG_ENDIAN);
            proto_tree_add_item(flags_tree, hf_vxi11_core_flag_term_chr_set, tvb, offset, 4, ENC_BIG_ENDIAN);

            if (flags != 0)
            {
                wmem_strbuf_t *strbuf = wmem_strbuf_create(wmem_packet_scope());

                if (flags & VXI11_CORE_FLAG_WAITLOCK)
                {
                    wmem_strbuf_append(strbuf, "WAIT_LOCK, ");
                }
                if (flags & VXI11_CORE_FLAG_END)
                {
                    wmem_strbuf_append(strbuf, "END, ");
                }
                if (flags & VXI11_CORE_FLAG_TERMCHRSET)
                {
                    wmem_strbuf_append(strbuf, "TERM_CHR_SET, ");
                }

                wmem_strbuf_truncate(strbuf, wmem_strbuf_get_len(strbuf) - 2);
                proto_item_append_text(flags_item, " (%s)", wmem_strbuf_get_str(strbuf));
            }
        }
    }

    return offset + 4;
}

static int
dissect_reason(tvbuff_t *tvb, int offset, proto_tree *tree)
{
    if (tree)
    {
        guint32 reason =
            tvb_get_ntohl(tvb, offset);
        proto_item *reason_item =
            proto_tree_add_item(tree, hf_vxi11_core_reason, tvb, offset, 4, ENC_BIG_ENDIAN);

        if (reason_item)
        {
            proto_tree *reason_tree =
                proto_item_add_subtree(reason_item, ett_vxi11_core_reason);

            proto_tree_add_item(reason_tree, hf_vxi11_core_reason_req_cnt, tvb, offset, 4, ENC_BIG_ENDIAN);
            proto_tree_add_item(reason_tree, hf_vxi11_core_reason_chr, tvb, offset, 4, ENC_BIG_ENDIAN);
            proto_tree_add_item(reason_tree, hf_vxi11_core_reason_end, tvb, offset, 4, ENC_BIG_ENDIAN);

            if (reason != 0)
            {
                wmem_strbuf_t *strbuf = wmem_strbuf_create(wmem_packet_scope());

                if (reason & VXI11_CORE_REASON_REQCNT)
                {
                    wmem_strbuf_append(strbuf, "REQ_CNT, ");
                }
                if (reason & VXI11_CORE_REASON_CHR)
                {
                    wmem_strbuf_append(strbuf, "CHR, ");
                }
                if (reason & VXI11_CORE_REASON_END)
                {
                    wmem_strbuf_append(strbuf, "END, ");
                }

                wmem_strbuf_truncate(strbuf, wmem_strbuf_get_len(strbuf) - 2);
                proto_item_append_text(reason_item, " (%s)", wmem_strbuf_get_str(strbuf));
            }
        }
    }

    return offset + 4;
}

/* Dissectors for individual RPC requests and responses. */

static int
dissect_create_link_parms(tvbuff_t *tvb,
                          packet_info *pinfo,
                          proto_tree *tree, void* data _U_)
{
    const char *str;
    int offset = 0;

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_client_id, offset);
    offset = dissect_rpc_bool(tvb, tree, hf_vxi11_core_lock_device, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lock_timeout, offset);
    offset = dissect_rpc_string(tvb, tree, hf_vxi11_core_device, offset, &str);

    proto_item_append_text(tree, " (Create_LinkParms) %s", str);
    col_append_fstr(pinfo->cinfo, COL_INFO, " %s", str);

    return offset;
}

static int
dissect_create_link_resp(tvbuff_t *tvb,
                         packet_info *pinfo,
                         proto_tree *tree, void* data _U_)
{
    guint32 error, lid;
    int offset = 0;

    offset = dissect_error(tvb, offset, pinfo, tree, "Create_LinkResp", &error);

    lid    = tvb_get_ntohl(tvb, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lid, offset);

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_abort_port, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_max_recv_size, offset);

    if (error == VXI11_CORE_ERROR_NO_ERROR)
    {
        proto_item_append_text(tree, " LID=%d", lid);
        col_append_fstr(pinfo->cinfo, COL_INFO, " LID=%d", lid);
    }

    return offset;
}

static int
dissect_device_SRQ_parms(tvbuff_t *tvb,
                         packet_info *pinfo _U_,
                         proto_tree *tree, void* data _U_)
{
    int offset = dissect_rpc_opaque_data(tvb, 0, tree, NULL, hf_vxi11_intr_handle, FALSE, 0, FALSE, NULL, NULL);

    proto_item_append_text(tree, " (Device_SrqParms)");

    return offset;
}

static int
dissect_device_docmd_parms(tvbuff_t *tvb,
                           packet_info *pinfo,
                           proto_tree *tree, void* data _U_)
{
    guint32 lid, cmd;
    const gchar *cmdstr;
    int offset = 0;

    lid    = tvb_get_ntohl(tvb, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lid, offset);

    offset = dissect_flags(tvb, offset, tree);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_io_timeout, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lock_timeout, offset);

    cmd    = tvb_get_ntohl(tvb, offset);
    cmdstr = val_to_str(cmd, vxi11_core_cmd_vals, "Unknown(0x%x)");
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_cmd, offset);

    offset = dissect_rpc_bool(tvb, tree, hf_vxi11_core_network_order, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_size, offset);
    offset = dissect_rpc_opaque_data(tvb, offset, tree, NULL, hf_vxi11_core_data, FALSE, 0, FALSE, NULL, NULL);

    proto_item_append_text(tree, " (Device_DocmdParms) LID=%d CMD=%s", lid, cmdstr);
    col_append_fstr(pinfo->cinfo, COL_INFO, " LID=%d CMD=%s", lid, cmdstr);

    return offset;
}

static int
dissect_device_docmd_resp(tvbuff_t *tvb,
                          packet_info *pinfo,
                          proto_tree *tree, void* data _U_)
{
    guint32 error;
    int offset = 0;

    offset = dissect_error(tvb, offset, pinfo, tree, "Device_DocmdResp", &error);
    offset = dissect_rpc_opaque_data(tvb, offset, tree, NULL, hf_vxi11_core_data, FALSE, 0, FALSE, NULL, NULL);

    return offset;
}

static int
dissect_device_enable_SRQ_parms(tvbuff_t *tvb,
                                packet_info *pinfo,
                                proto_tree *tree, void* data _U_)
{
    int offset = 0;
    guint32 lid = tvb_get_ntohl(tvb, offset);

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lid, offset);
    offset = dissect_rpc_bool(tvb, tree, hf_vxi11_core_enable, offset);
    offset = dissect_rpc_opaque_data(tvb, offset, tree, NULL, hf_vxi11_core_handle, FALSE, 0, FALSE, NULL, NULL);

    proto_item_append_text(tree, " (Device_EnableSrqParms) LID=%d", lid);
    col_append_fstr(pinfo->cinfo, COL_INFO, " LID=%d", lid);

    return offset;
}

static int
dissect_device_error(tvbuff_t *tvb,
                     packet_info *pinfo,
                     proto_tree *tree, void* data _U_)
{
    guint32 error;

    return dissect_error(tvb, 0, pinfo, tree, "Device_Error", &error);
}

static int
dissect_device_generic_parms(tvbuff_t *tvb,
                             packet_info *pinfo,
                             proto_tree *tree, void* data _U_)
{
    int offset = 0;
    guint32 lid = tvb_get_ntohl(tvb, offset);

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lid, offset);
    offset = dissect_flags(tvb, offset, tree);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_io_timeout, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lock_timeout, offset);

    proto_item_append_text(tree, " (Device_GenericParms) LID=%d", lid);
    col_append_fstr(pinfo->cinfo, COL_INFO, " LID=%d", lid);

    return offset;
}

static int
dissect_device_link(tvbuff_t *tvb,
                    packet_info *pinfo,
                    proto_tree *tree, void* data _U_)
{
    int offset = 0;
    guint32 lid = tvb_get_ntohl(tvb, offset);

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lid, offset);

    proto_item_append_text(tree, " (Device_Link) LID=%d", lid);
    col_append_fstr(pinfo->cinfo, COL_INFO, " LID=%d", lid);

    return offset;
}

static int
dissect_device_lock_parms(tvbuff_t *tvb,
                          packet_info *pinfo,
                          proto_tree *tree, void* data _U_)
{
    int offset = 0;
    guint32 lid = tvb_get_ntohl(tvb, offset);

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lid, offset);
    offset = dissect_flags(tvb, offset, tree);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lock_timeout, offset);

    proto_item_append_text(tree, " (Device_LockParms) LID=%d", lid);
    col_append_fstr(pinfo->cinfo, COL_INFO, " LID=%d", lid);

    return offset;
}

static int
dissect_device_read_parms(tvbuff_t *tvb,
                          packet_info *pinfo,
                          proto_tree *tree, void* data _U_)
{
    int offset = 0;
    guint32 lid = tvb_get_ntohl(tvb, offset);

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lid, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_size, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_io_timeout, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lock_timeout, offset);
    offset = dissect_flags(tvb, offset, tree);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_term_char, offset);

    proto_item_append_text(tree, " (Device_ReadParms) LID=%d", lid);
    col_append_fstr(pinfo->cinfo, COL_INFO, " LID=%d", lid);

    return offset;
}

static int
dissect_device_read_resp(tvbuff_t *tvb,
                         packet_info *pinfo,
                         proto_tree *tree, void* data _U_)
{
    guint32 error;
    int offset = 0;
    guint32 datalength = 0;

    offset = dissect_error(tvb, offset, pinfo, tree, "Device_ReadResp", &error);
    offset = dissect_reason(tvb, offset, tree);

    datalength = tvb_get_ntohl( tvb, offset);
    if(MAX_DATA_SHOW_SIZE <=datalength)
        datalength = MAX_DATA_SHOW_SIZE;
    col_append_fstr( pinfo->cinfo, COL_INFO," %s",tvb_format_text(pinfo->pool, tvb, offset+4,(guint32) datalength));

    offset = dissect_rpc_opaque_data(tvb, offset, tree, NULL, hf_vxi11_core_data, FALSE, 0, FALSE, NULL, NULL);

    return offset;
}

static int
dissect_device_readstb_resp(tvbuff_t *tvb,
                            packet_info *pinfo,
                            proto_tree *tree, void* data _U_)
{
    guint32 error, stb;
    int offset = 0;

    offset = dissect_error(tvb, offset, pinfo, tree, "Device_ReadStbResp", &error);

    stb    = tvb_get_ntohl(tvb, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_stb, offset);

    if (error == VXI11_CORE_ERROR_NO_ERROR)
    {
        proto_item_append_text(tree, " STB=0x%02x", stb);
        col_append_fstr(pinfo->cinfo, COL_INFO, " STB=0x%02x", stb);
    }

    return offset;
}

static int
dissect_device_remote_func(tvbuff_t *tvb,
                           packet_info *pinfo,
                           proto_tree *tree, void* data _U_)
{
    guint32 port;
    const gchar *addrstr;
    int offset = 0;

    addrstr = tvb_ip_to_str(pinfo->pool, tvb, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_host_addr, offset);

    port   = tvb_get_ntohl(tvb, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_host_port, offset);

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_prog_num, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_prog_vers, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_prog_family, offset);

    proto_item_append_text(tree, " (Device_RemoteFunc) %s:%d", addrstr, port);
    col_append_fstr(pinfo->cinfo, COL_INFO, " %s:%d", addrstr, port);

    return offset;
}

static int
dissect_device_write_parms(tvbuff_t *tvb,
                           packet_info *pinfo,
                           proto_tree *tree, void* data _U_)
{
    guint32 datalength = 0;
    int offset = 0;
    guint32 lid = tvb_get_ntohl(tvb, offset);

    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lid, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_io_timeout, offset);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_lock_timeout, offset);
    offset = dissect_flags(tvb, offset, tree);
    col_append_fstr(pinfo->cinfo, COL_INFO, " LID=%d", lid);

    datalength = tvb_get_ntohl( tvb, offset);
    if(MAX_DATA_SHOW_SIZE <=datalength)
        datalength = MAX_DATA_SHOW_SIZE;
    col_append_fstr( pinfo->cinfo, COL_INFO," %s",tvb_format_text(pinfo->pool, tvb, offset+4,(guint32) datalength));

    offset = dissect_rpc_opaque_data(tvb, offset, tree, NULL, hf_vxi11_core_data, FALSE, 0, FALSE, NULL, NULL);
    proto_item_append_text(tree, " (Device_WriteParms) LID=%d", lid);

    return offset;
}

static int
dissect_device_write_resp(tvbuff_t *tvb,
                          packet_info *pinfo,
                          proto_tree *tree, void* data _U_)
{
    guint32 error;
    int offset = 0;

    offset = dissect_error(tvb, offset, pinfo, tree, "Device_WriteResp", &error);
    offset = dissect_rpc_uint32(tvb, tree, hf_vxi11_core_size, offset);

    return offset;
}


/* Initialization & registration. */

void
proto_register_vxi11_core(void)
{
    static const value_string vxi11_core_v1_proc_vals[] = {
        { VXI11_CORE_PROC_NULL, "NULL" },
        { VXI11_CORE_PROC_CREATE_LINK, "CREATE_LINK" },
        { VXI11_CORE_PROC_DEVICE_WRITE, "DEVICE_WRITE" },
        { VXI11_CORE_PROC_DEVICE_READ, "DEVICE_READ" },
        { VXI11_CORE_PROC_DEVICE_READSTB, "DEVICE_READSTB" },
        { VXI11_CORE_PROC_DEVICE_TRIGGER, "DEVICE_TRIGGER" },
        { VXI11_CORE_PROC_DEVICE_CLEAR, "DEVICE_CLEAR" },
        { VXI11_CORE_PROC_DEVICE_REMOTE, "DEVICE_REMOTE" },
        { VXI11_CORE_PROC_DEVICE_LOCAL, "DEVICE_LOCAL" },
        { VXI11_CORE_PROC_DEVICE_LOCK, "DEVICE_LOCK" },
        { VXI11_CORE_PROC_DEVICE_UNLOCK, "DEVICE_UNLOCK" },
        { VXI11_CORE_PROC_DEVICE_ENABLE_SRQ, "DEVICE_ENABLE_SRQ" },
        { VXI11_CORE_PROC_DEVICE_DOCMD, "DEVICE_DOCMD" },
        { VXI11_CORE_PROC_DESTROY_LINK, "DESTROY_LINK" },
        { VXI11_CORE_PROC_CREATE_INTR_CHAN, "CREATE_INTR_CHAN" },
        { VXI11_CORE_PROC_DESTROY_INTR_CHAN, "DESTROY_INTR_CHAN" },
        { 0, NULL }
    };

    static const value_string vxi11_core_addr_family_vals[] = {
        { VXI11_CORE_ADDRESS_FAMILY_TCP, "TCP" },
        { VXI11_CORE_ADDRESS_FAMILY_UDP, "UDP" },
        { 0, NULL  }
    };

    static hf_register_info vxi11_core_hf[] = {
        { &hf_vxi11_core_procedure_v1,
          {
              "V1 Procedure", "vxi11_core.procedure_v1", FT_UINT32, BASE_DEC,
              VALS(vxi11_core_v1_proc_vals), 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_abort_port,
          {
              "Abort Port", "vxi11_core.abort_port", FT_UINT16, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_client_id,
          {
              "Client ID", "vxi11_core.client_id", FT_UINT32, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_cmd,
          {
              "Command", "vxi11_core.cmd", FT_UINT32, BASE_HEX,
              VALS(vxi11_core_cmd_vals), 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_data,
          {
              "Data", "vxi11_core.data", FT_BYTES, BASE_NONE,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_device,
          {
              "Device Name", "vxi11_core.device", FT_STRING, BASE_NONE,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_enable,
          {
              "Enable", "vxi11_core.enable", FT_BOOLEAN, BASE_NONE,
              TFS(&tfs_yes_no), 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_error,
          {
              "Error Code", "vxi11_core.error", FT_UINT32, BASE_DEC,
              VALS(vxi11_core_error_vals), 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_flags,
          {
              "Flags", "vxi11_core.flags", FT_UINT32, BASE_HEX,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_flag_wait_lock,
          {
              "Wait Until Locked", "vxi11_core.flags.wait_lock", FT_BOOLEAN, 32,
              NULL, VXI11_CORE_FLAG_WAITLOCK, NULL, HFILL
          }
        },
        { &hf_vxi11_core_flag_end,
          {
              "Set EOI", "vxi11_core.flags.end", FT_BOOLEAN, 32,
              NULL, VXI11_CORE_FLAG_END, NULL, HFILL
          }
        },
        { &hf_vxi11_core_flag_term_chr_set,
          {
              "Termination Character Set", "vxi11_core.flags.term_chr_set", FT_BOOLEAN, 32,
              NULL, VXI11_CORE_FLAG_TERMCHRSET, NULL, HFILL
          }
        },
        { &hf_vxi11_core_handle,
          {
              "Handle", "vxi11_core.handle", FT_BYTES, BASE_NONE,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_host_addr,
          {
              "Host Address", "vxi11_core.host_addr", FT_UINT32, BASE_HEX,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_host_port,
          {
              "Host Port", "vxi11_core.host_port", FT_UINT32, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_io_timeout,
          {
              "I/O Timeout", "vxi11_core.io_timeout", FT_UINT32, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_lid,
          {
              "Link ID", "vxi11_core.lid", FT_UINT32, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_lock_device,
          {
              "Lock Device", "vxi11_core.lock_device", FT_BOOLEAN, BASE_NONE,
              TFS(&tfs_yes_no), 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_lock_timeout,
          {
              "Lock Timeout", "vxi11_core.lock_timeout", FT_UINT32, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_max_recv_size,
          {
              "Maximum Receive Size", "vxi11_core.max_recv_size", FT_UINT32, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_network_order,
          {
              "Network Byte Order", "vxi11_core.network_order", FT_BOOLEAN, BASE_NONE,
              TFS(&tfs_yes_no), 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_prog_family,
          {
              "Address Family", "vxi11_core.prog_family", FT_UINT32, BASE_DEC,
              VALS(vxi11_core_addr_family_vals), 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_prog_num,
          {
              "Program", "vxi11_core.prog_num", FT_UINT32, BASE_HEX,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_prog_vers,
          {
              "Version", "vxi11_core.prog_vers", FT_UINT32, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_reason,
          {
              "Reason", "vxi11_core.reason", FT_UINT32, BASE_HEX,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_reason_req_cnt,
          {
              "Requested Count Reached", "vxi11_core.reason.req_cnt", FT_BOOLEAN, 32,
              NULL, VXI11_CORE_REASON_REQCNT, NULL, HFILL
          }
        },
        { &hf_vxi11_core_reason_chr,
          {
              "Termination Character Seen", "vxi11_core.reason.chr", FT_BOOLEAN, 32,
              NULL, VXI11_CORE_REASON_CHR, NULL, HFILL
          }
        },
        { &hf_vxi11_core_reason_end,
          {
              "EOI Set", "vxi11_core.reason.end", FT_BOOLEAN, 32,
              NULL, VXI11_CORE_REASON_END, NULL, HFILL
          }
        },
        { &hf_vxi11_core_size,
          {
              "Size", "vxi11_core.size", FT_UINT32, BASE_DEC,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_stb,
          {
              "Status Byte", "vxi11_core.stb", FT_UINT8, BASE_HEX,
              NULL, 0, NULL, HFILL
          }
        },
        { &hf_vxi11_core_term_char,
          {
              "Termination Character", "vxi11_core.term_char", FT_UINT8, BASE_HEX,
              NULL, 0, NULL, HFILL
          }
        }
    };
    static gint *vxi11_core_ett[] = {
        &ett_vxi11_core,
        &ett_vxi11_core_flags,
        &ett_vxi11_core_reason
    };

    proto_vxi11_core = proto_register_protocol("VXI-11 Core Protocol",
                                               "VXI-11 Core",
                                               "vxi11_core");
    proto_register_field_array(proto_vxi11_core, vxi11_core_hf, array_length(vxi11_core_hf));
    proto_register_subtree_array(vxi11_core_ett, array_length(vxi11_core_ett));
}

void
proto_reg_handoff_vxi11_core(void)
{
    /* proc number, "proc name", dissect_request, dissect_reply     */
    static const vsff vxi111_core_proc[] = {
        { VXI11_CORE_PROC_NULL, "NULL",
          dissect_rpc_void, dissect_rpc_void },
        { VXI11_CORE_PROC_CREATE_LINK, "CREATE_LINK",
          dissect_create_link_parms, dissect_create_link_resp },
        { VXI11_CORE_PROC_DEVICE_WRITE, "DEVICE_WRITE",
          dissect_device_write_parms, dissect_device_write_resp },
        { VXI11_CORE_PROC_DEVICE_READ, "DEVICE_READ",
          dissect_device_read_parms, dissect_device_read_resp },
        { VXI11_CORE_PROC_DEVICE_READSTB, "DEVICE_READSTB",
          dissect_device_generic_parms, dissect_device_readstb_resp },
        { VXI11_CORE_PROC_DEVICE_TRIGGER, "DEVICE_TRIGGER",
          dissect_device_generic_parms, dissect_device_error },
        { VXI11_CORE_PROC_DEVICE_CLEAR, "DEVICE_CLEAR",
          dissect_device_generic_parms, dissect_device_error },
        { VXI11_CORE_PROC_DEVICE_REMOTE, "DEVICE_REMOTE",
          dissect_device_generic_parms, dissect_device_error },
        { VXI11_CORE_PROC_DEVICE_LOCAL, "DEVICE_LOCAL",
          dissect_device_generic_parms, dissect_device_error },
        { VXI11_CORE_PROC_DEVICE_LOCK, "DEVICE_LOCK",
          dissect_device_lock_parms, dissect_device_error },
        { VXI11_CORE_PROC_DEVICE_UNLOCK, "DEVICE_UNLOCK",
          dissect_device_link, dissect_device_error },
        { VXI11_CORE_PROC_DEVICE_ENABLE_SRQ, "DEVICE_ENABLE_SRQ",
          dissect_device_enable_SRQ_parms, dissect_device_error },
        { VXI11_CORE_PROC_DEVICE_DOCMD, "DEVICE_DOCMD",
          dissect_device_docmd_parms, dissect_device_docmd_resp },
        { VXI11_CORE_PROC_DESTROY_LINK, "DESTROY_LINK",
          dissect_device_link, dissect_device_error },
        { VXI11_CORE_PROC_CREATE_INTR_CHAN, "CREATE_INTR_CHAN",
          dissect_device_remote_func, dissect_device_error },
        { VXI11_CORE_PROC_DESTROY_INTR_CHAN, "DESTROY_INTR_CHAN",
          dissect_rpc_void, dissect_device_error },
        { 0, NULL, NULL, NULL }
    };
    static const rpc_prog_vers_info vxi11_core_vers_info[] = {
        { VXI11_CORE_VERSION, vxi111_core_proc, &hf_vxi11_core_procedure_v1 },
    };

    rpc_init_prog(proto_vxi11_core, VXI11_CORE_PROGRAM, ett_vxi11_core,
                  G_N_ELEMENTS(vxi11_core_vers_info), vxi11_core_vers_info);
}


void
proto_register_vxi11_async(void)
{
    static const value_string vxi11_async_v1_proc_vals[] = {
        { VXI11_ASYNC_PROC_NULL, "NULL" },
        { VXI11_ASYNC_PROC_DEVICE_ABORT, "DEVICE_ABORT" },
        { 0, NULL }
    };

    static hf_register_info vxi11_async_hf[] = {
        { &hf_vxi11_async_procedure_v1,
          {
              "V1 Procedure", "vxi11_async.procedure_v1", FT_UINT32, BASE_DEC,
              VALS(vxi11_async_v1_proc_vals), 0, NULL, HFILL
          }
        }
    };
    static gint *vxi11_async_ett[] = {
        &ett_vxi11_async,
    };

    proto_vxi11_async = proto_register_protocol("VXI-11 Asynchronous Abort",
                                                "VXI-11 Async",
                                                "vxi11_async");
    proto_register_field_array(proto_vxi11_async, vxi11_async_hf, array_length(vxi11_async_hf));
    proto_register_subtree_array(vxi11_async_ett, array_length(vxi11_async_ett));
}

void
proto_reg_handoff_vxi11_async(void)
{
    static const vsff vxi111_async_proc[] = {
        { VXI11_ASYNC_PROC_NULL, "NULL",
          dissect_rpc_void, dissect_rpc_void },
        { VXI11_ASYNC_PROC_DEVICE_ABORT, "DEVICE_ABORT",
          dissect_device_link, dissect_device_error },
        { 0, NULL, NULL, NULL }
    };
    static const rpc_prog_vers_info vxi11_async_vers_info[] = {
        { VXI11_ASYNC_VERSION, vxi111_async_proc, &hf_vxi11_async_procedure_v1 },
    };

    rpc_init_prog(proto_vxi11_async, VXI11_ASYNC_PROGRAM, ett_vxi11_async,
                  G_N_ELEMENTS(vxi11_async_vers_info), vxi11_async_vers_info);
}


void
proto_register_vxi11_intr(void)
{
    static const value_string vxi11_intr_v1_proc_vals[] = {
        { VXI11_INTR_PROC_NULL, "NULL" },
        { VXI11_INTR_PROC_DEVICE_INTR_SRQ, "DEVICE_INTR_SRQ" },
        { 0, NULL }
    };

    static hf_register_info vxi11_intr_hf[] = {
        { &hf_vxi11_intr_procedure_v1,
          {
              "V1 Procedure", "vxi11_intr.procedure_v1", FT_UINT32, BASE_DEC,
              VALS(vxi11_intr_v1_proc_vals), 0, NULL, HFILL
          }
        },
        { &hf_vxi11_intr_handle,
          {
              "Handle", "vxi11_intr.handle", FT_BYTES, BASE_NONE,
              NULL, 0, NULL, HFILL
          }
        }
    };
    static gint *vxi11_intr_ett[] = {
        &ett_vxi11_intr,
    };

    proto_vxi11_intr = proto_register_protocol("VXI-11 Interrupt",
                                               "VXI-11 Intr",
                                               "vxi11_intr");
    proto_register_field_array(proto_vxi11_intr, vxi11_intr_hf, array_length(vxi11_intr_hf));
    proto_register_subtree_array(vxi11_intr_ett, array_length(vxi11_intr_ett));
}

void
proto_reg_handoff_vxi11_intr(void)
{
    static const vsff vxi111_intr_proc[] = {
        { VXI11_INTR_PROC_NULL, "NULL",
          dissect_rpc_void, dissect_rpc_void },
        { VXI11_INTR_PROC_DEVICE_INTR_SRQ, "DEVICE_INTR_SRQ",
          dissect_device_SRQ_parms, dissect_rpc_void },
        { 0, NULL, NULL, NULL }
    };
    static const rpc_prog_vers_info vxi11_intr_vers_info[] = {
        { VXI11_INTR_VERSION, vxi111_intr_proc, &hf_vxi11_intr_procedure_v1 },
    };

    rpc_init_prog(proto_vxi11_intr, VXI11_INTR_PROGRAM, ett_vxi11_intr,
                  G_N_ELEMENTS(vxi11_intr_vers_info), vxi11_intr_vers_info);
}

/*
 * Editor modelines  -  https://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:
 */