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

/* Routines for UMTS FP Hint protocol disassembly
 *
 * 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 <wiretap/wtap.h>
#include <epan/conversation.h>
#include <epan/expert.h>
#include <epan/proto_data.h>
#include "packet-umts_fp.h"
#include "packet-umts_mac.h"
#include "packet-umts_rlc.h"

void proto_register_fp_hint(void);
void proto_reg_handoff_fp_hint(void);

static int proto_fp_hint = -1;
extern int proto_fp;
extern int proto_umts_mac;
extern int proto_umts_rlc;

static int ett_fph = -1;
static int ett_fph_rb = -1;
static int ett_fph_ddi_entry = -1;
static int ett_fph_tf = -1;

static int hf_fph_frametype = -1;
static int hf_fph_channeltype = -1;
static int hf_fph_chcnt = -1;
static int hf_fph_dchid = -1;
static int hf_fph_urnti = -1;
static int hf_fph_rlcmode = -1;
static int hf_fph_content = -1;
static int hf_fph_rbid = -1;
static int hf_fph_ctmux = -1;
static int hf_fph_ciphered = -1;
static int hf_fph_deciphered = -1;
static int hf_fph_macdflowid = -1;
static int hf_fph_macehs = -1;
static int hf_fph_rb = -1;
static int hf_fph_ddi_entry = -1;
static int hf_fph_ddi_size = -1;
static int hf_fph_ddi_logical = -1;
static int hf_fph_ddi_value = -1;
static int hf_fph_tf = -1;
static int hf_fph_tf_n = -1;
static int hf_fph_tf_size = -1;

static expert_field ei_fph_radio_bearers = EI_INIT;
static expert_field ei_fph_mac_frames = EI_INIT;
static expert_field ei_fph_fp_channels = EI_INIT;

static dissector_handle_t data_handle;
static dissector_handle_t ethwithfcs_handle;
static dissector_handle_t atm_untrunc_handle;

enum fph_ctype {
    FPH_CHANNEL_PCH,
    FPH_CHANNEL_RACH,
    FPH_CHANNEL_FACH,
    FPH_CHANNEL_DCH,
    FPH_CHANNEL_HSDSCH,
    FPH_CHANNEL_EDCH
};

enum fph_frame {
    FPH_FRAME_ATM_AAL2,
    FPH_FRAME_ETHERNET
};

enum fph_pich {
    FPH_PICH18,
    FPH_PICH36,
    FPH_PICH72,
    FPH_PICH144
};

enum fph_content {
    FPH_CONTENT_UNKNOWN,
    FPH_CONTENT_DCCH,
    FPH_CONTENT_PS_DTCH,
    FPH_CONTENT_CS_DTCH
};

static const value_string fph_frametype_vals[] = {
    { FPH_FRAME_ATM_AAL2,   "ATM AAL2" },
    { FPH_FRAME_ETHERNET,   "Ethernet" },
    { 0, NULL }
};

static const value_string fph_channeltype_vals[] = {
    { FPH_CHANNEL_PCH,      "PCH" },
    { FPH_CHANNEL_RACH,     "RACH" },
    { FPH_CHANNEL_FACH,     "FACH" },
    { FPH_CHANNEL_DCH,      "DCH" },
    { FPH_CHANNEL_HSDSCH,   "HSDSCH" },
    { FPH_CHANNEL_EDCH,     "E-DCH" },
    { 0, NULL }
};

static const value_string fph_rlcmode_vals[] = {
    { RLC_TM,           "Transparent Mode" },
    { RLC_UM,           "Unacknowledged Mode" },
    { RLC_AM,           "Acknowledged Mode" },
    { 0, NULL }
};

static const value_string fph_content_vals[] = {
    { FPH_CONTENT_UNKNOWN,  "Unknown" },
    { FPH_CONTENT_DCCH,     "DCCH" },
    { FPH_CONTENT_PS_DTCH,  "PS DTCH" },
    { FPH_CONTENT_CS_DTCH,  "PS DTCH" },
    { 0, NULL }
};

static const true_false_string fph_ctmux_vals = {
    "C/T Mux field present", "C/T Mux field not present"
};

static const true_false_string fph_ciphered_vals = {
    "Ciphered", "Not ciphered"
};

static const true_false_string fph_deciphered_vals = {
    "Deciphered", "Not deciphered"
};

static guint16 assign_rb_info(tvbuff_t *tvb, packet_info *pinfo, guint16 offset, guint8 rbcnt, proto_tree *tree)
{
    guint8 i = 0, next_byte;
    guint8 rlc_mode, content, rb_id, ctmux, ciphered, deciphered;
    guint32 urnti;
    struct umts_mac_info *macinf;
    struct rlc_info *rlcinf;

    macinf = (umts_mac_info *)p_get_proto_data(wmem_file_scope(), pinfo, proto_umts_mac, 0);
    rlcinf = (rlc_info *)p_get_proto_data(wmem_file_scope(), pinfo, proto_umts_rlc, 0);
    if (!macinf) {
        macinf = wmem_new0(wmem_file_scope(), struct umts_mac_info);
        p_add_proto_data(wmem_file_scope(), pinfo, proto_umts_mac, 0, macinf);
    }
    if (!rlcinf) {
        rlcinf = wmem_new0(wmem_file_scope(), struct rlc_info);
        p_add_proto_data(wmem_file_scope(), pinfo, proto_umts_rlc, 0, rlcinf);
    }

    while (i < rbcnt) {
        urnti = tvb_get_letohl(tvb, offset);
        next_byte = tvb_get_guint8(tvb, offset + 4);
        rlc_mode = next_byte & 0x3;
        content = (next_byte >> 2) & 0x3;
        rb_id = next_byte >> 4;
        next_byte = tvb_get_guint8(tvb, offset + 5);
        rb_id |= (next_byte & 0x01) << 4;
        ctmux = (next_byte >> 1) & 0x1;
        ciphered = (next_byte >> 2) & 0x1;
        deciphered = (next_byte >> 3) & 0x1;

        if (i >= MAX_RLC_CHANS) {
            proto_tree_add_expert_format(tree, pinfo, &ei_fph_radio_bearers, tvb, offset, -1,
                "Frame contains more Radio Bearers than currently supported (%u present, %u supported)",
                rbcnt, MAX_RLC_CHANS);
            return -1;
        }
        if (i >= MAX_MAC_FRAMES) {
            proto_tree_add_expert_format(tree, pinfo, &ei_fph_mac_frames, tvb, offset, -1,
                "Frame contains more MAC Frames than currently supported (%u present, %u supported)",
                rbcnt, MAX_MAC_FRAMES);
            return -1;
        }

        rlcinf->mode[i] = rlc_mode;
        rlcinf->rbid[i] = rb_id;
        rlcinf->ueid[i] = urnti;
        rlcinf->ciphered[i] = ciphered;
        rlcinf->deciphered[i] = deciphered;
        rlcinf->li_size[i] = RLC_LI_VARIABLE;

        macinf->ctmux[i] = ctmux ? TRUE : FALSE;
        switch (content) {
            case FPH_CONTENT_DCCH:
                macinf->content[i] = MAC_CONTENT_DCCH;
                break;
            case FPH_CONTENT_PS_DTCH:
                macinf->content[i] = MAC_CONTENT_PS_DTCH;
                break;
            case FPH_CONTENT_CS_DTCH:
                macinf->content[i] = MAC_CONTENT_CS_DTCH;
                break;
            default:
                macinf->content[i] = MAC_CONTENT_UNKNOWN;
        }

        if (tree) {
            proto_tree *subtree;
            proto_item *pi;

            pi = proto_tree_add_item(tree, hf_fph_rb, tvb, offset, 8, ENC_NA);
            subtree = proto_item_add_subtree(pi, ett_fph_rb);

            if (urnti)
                proto_tree_add_uint(subtree, hf_fph_urnti, tvb, offset, 4, urnti);
            proto_tree_add_bits_item(subtree, hf_fph_content, tvb, (offset+4)*8+4, 2, ENC_LITTLE_ENDIAN);
            proto_tree_add_bits_item(subtree, hf_fph_rlcmode, tvb, (offset+4)*8+6, 2, ENC_LITTLE_ENDIAN);
            proto_tree_add_item(subtree, hf_fph_rbid, tvb, (offset+4), 2, ENC_LITTLE_ENDIAN);
            proto_tree_add_boolean(subtree, hf_fph_ctmux, tvb, offset+5, 1, ctmux);
            proto_tree_add_boolean(subtree, hf_fph_ciphered, tvb, offset+5, 1, ciphered);
            proto_tree_add_boolean(subtree, hf_fph_deciphered, tvb, offset+5, 1, deciphered);
        }
        offset += 8;
        i++;
    }
    return offset;
}

static void assign_fph_pch(tvbuff_t *tvb, packet_info *pinfo _U_, guint16 offset, fp_info *fpi, proto_tree *tree _U_)
{
    guint8 pich;
    guint16 blkcnt, blksz;
    const guint8 *hdr;

    fpi->channel = CHANNEL_PCH;

    hdr = tvb_get_ptr(tvb, offset, 4);
    blkcnt = hdr[0] | ((hdr[1] & 0x01) << 8);
    blksz = (hdr[1] >> 1) | ((hdr[2] & 0x3f) << 7);
    pich = (hdr[2] >> 6) | ((hdr[3] & 0x01) << 2);

    switch (pich) {
        case FPH_PICH18:
            fpi->paging_indications = 18;
            break;
        case FPH_PICH36:
            fpi->paging_indications = 36;
            break;
        case FPH_PICH72:
            fpi->paging_indications = 72;
            break;
        case FPH_PICH144:
            fpi->paging_indications = 144;
            break;
        default:
            fpi->paging_indications = 0;
    }
    fpi->num_chans = 1;
    fpi->chan_tf_size[0] = blksz;
    fpi->chan_num_tbs[0] = blkcnt;
}

static void assign_fph_rach(tvbuff_t *tvb, packet_info *pinfo, guint16 offset, fp_info *fpi, proto_tree *tree)
{
    const guint8 *hdr;
    guint8 rbcnt;
    guint16 blkcnt, blksz;

    fpi->channel = CHANNEL_RACH_FDD;

    hdr = tvb_get_ptr(tvb, offset, 4);
    blkcnt = hdr[0] | ((hdr[1] & 0x01) << 8);
    blksz = (hdr[1] >> 1) | ((hdr[2] & 0x3f) << 7);

    fpi->num_chans = 1;
    fpi->chan_tf_size[0] = blksz;
    fpi->chan_num_tbs[0] = blkcnt;

    offset += 4;
    rbcnt = tvb_get_guint8(tvb, offset); offset++;
    if (rbcnt > 0)
        /*offset =*/ assign_rb_info(tvb, pinfo, offset, rbcnt, tree);
}

static void assign_fph_dch(tvbuff_t *tvb, packet_info *pinfo, guint16 offset, fp_info *fpi, proto_tree *tree)
{
    guint8 dch_id, rbcnt;
    guint16 N, size;
    guint32 cnt, i = 0;
    const guint8 *hdr;
    proto_tree *subtree;
    proto_item *pi;

    fpi->channel = CHANNEL_DCH;
    cnt = tvb_get_guint8(tvb, offset); offset++;

    if (tree)
        proto_tree_add_uint(tree, hf_fph_chcnt, tvb, offset-1, 1, cnt);

    fpi->num_chans = cnt;
    fpi->dch_crc_present = 1;
    while (i < cnt) {
        pi = proto_tree_add_item(tree, hf_fph_tf, tvb, offset, 4, ENC_NA);
        subtree = proto_item_add_subtree(pi, ett_fph_rb);
        hdr = tvb_get_ptr(tvb, offset, 4);
        dch_id = (hdr[0] & 0x1f) + 1;

        N = ((hdr[1] & 0x3f)<<3) | (hdr[0] >> 5);
        size = ((hdr[3] & 0x07)<<10) | (hdr[2] << 2) | ((hdr[1] & 0xc0)>>6);
        size = size == 0x1fff ? 0 : size;

        fpi->chan_tf_size[i] = size;
        fpi->chan_num_tbs[i] = N;

        if (subtree) {
            proto_tree_add_uint(subtree, hf_fph_dchid, tvb, offset, 1, dch_id);
            proto_tree_add_uint(subtree, hf_fph_tf_n, tvb, offset, 2, N);
            if (size)
                proto_tree_add_uint(subtree, hf_fph_tf_size, tvb, offset + 1, 3, size);
        }
        offset += 4;
        if (i > MAX_FP_CHANS) {
            proto_tree_add_expert_format(tree, pinfo, &ei_fph_fp_channels, tvb, offset, -1,
                "Frame contains more FP channels than currently supported (%u supported)",
                MAX_FP_CHANS);
            return;
        }
        i++;
    }
    rbcnt = tvb_get_guint8(tvb, offset); offset++;
    if (rbcnt > 0)
        /*offset =*/ assign_rb_info(tvb, pinfo, offset, rbcnt, tree);
}

static void assign_fph_fach(tvbuff_t *tvb, packet_info *pinfo, guint16 offset, fp_info *fpi, proto_tree *tree)
{
    const guint8 *hdr;
    guint8 rbcnt;
    guint16 blkcnt, blksz;

    fpi->channel = CHANNEL_FACH_FDD;

    hdr = tvb_get_ptr(tvb, offset, 4);
    blkcnt = hdr[0] | ((hdr[1] & 0x01) << 8);
    blksz = (hdr[1] >> 1) | ((hdr[2] & 0x3f) << 7);

    fpi->num_chans = 1;
    fpi->chan_tf_size[0] = blksz;
    fpi->chan_num_tbs[0] = blkcnt;

    offset += 4;
    rbcnt = tvb_get_guint8(tvb, offset); offset++;
    if (rbcnt > 0)
        /*offset =*/ assign_rb_info(tvb, pinfo, offset, rbcnt, tree);
}

static void assign_fph_hsdsch(tvbuff_t *tvb, packet_info *pinfo, guint16 offset, fp_info *fpi, proto_tree *tree)
{
    guint8 rbcnt, hsdsch_info;

    hsdsch_info = tvb_get_guint8(tvb, offset);
    fpi->hsdsch_entity = hsdsch_info & 0x08 ? ehs : hs;
    fpi->channel = CHANNEL_HSDSCH;

    if (tree) {
        proto_tree_add_bits_item(tree, hf_fph_macehs, tvb,
            offset*8+4, 1, ENC_LITTLE_ENDIAN);
        proto_tree_add_bits_item(tree, hf_fph_macdflowid, tvb,
            offset*8+5, 3, ENC_LITTLE_ENDIAN);
    }

    offset++;
    rbcnt = tvb_get_guint8(tvb, offset); offset++;
    if (rbcnt > 0)
        /*offset =*/ assign_rb_info(tvb, pinfo, offset, rbcnt, tree);
}

static void assign_fph_edch(tvbuff_t *tvb, packet_info *pinfo, guint16 offset, fp_info *fpi, proto_tree *tree)
{
    guint8 rbcnt, macdflow_id, maces_cnt, i = 0;
    guint8 logical, ddi;
    guint16 maces_size;
    proto_item *pi;
    proto_tree *subtree = NULL;

    fpi->channel = CHANNEL_EDCH;
    macdflow_id = tvb_get_guint8(tvb, offset);

    if (tree) {
        proto_tree_add_uint(tree, hf_fph_macdflowid, tvb, offset, 1, macdflow_id);
    }

    offset++;
    maces_cnt = tvb_get_guint8(tvb, offset); offset++;

    fpi->no_ddi_entries = maces_cnt;
    while (i < maces_cnt) {
        ddi = tvb_get_guint8(tvb, offset++);
        logical = tvb_get_guint8(tvb, offset++);
        maces_size = tvb_get_letohs(tvb, offset);
        offset += 2;
        fpi->edch_ddi[i] = ddi;
        fpi->edch_macd_pdu_size[i] = maces_size;
        if (tree) {
            pi = proto_tree_add_item(tree, hf_fph_ddi_entry, tvb, offset - 4, 4, ENC_NA);
            subtree = proto_item_add_subtree(pi, ett_fph_ddi_entry);
            proto_tree_add_uint(subtree, hf_fph_ddi_value, tvb, offset - 4, 1, ddi);
            proto_tree_add_uint(subtree, hf_fph_ddi_logical, tvb, offset - 3, 1, logical);
            proto_tree_add_uint(subtree, hf_fph_ddi_size, tvb, offset - 2, 2, maces_size);
        }
        i++;
        if (i >= MAX_EDCH_DDIS) {
            proto_tree_add_expert_format(tree, pinfo, &ei_fph_fp_channels, tvb, offset, -1,
                "Frame contains more FP channels than currently supported (%u supported)",
                MAX_FP_CHANS);
            return;
        }
    }


    rbcnt = tvb_get_guint8(tvb, offset); offset++;
    if (rbcnt > 0)
        /*offset =*/ assign_rb_info(tvb, pinfo, offset, rbcnt, tree);
}

static void attach_info(tvbuff_t *tvb, packet_info *pinfo, guint16 offset, guint8 channel_type, guint8 frame_type, proto_tree *tree)
{
    fp_info *fpi;

    fpi = (fp_info *)p_get_proto_data(wmem_file_scope(), pinfo, proto_fp, 0);
    if (!fpi) {
        fpi = wmem_new0(wmem_file_scope(), fp_info);
        p_add_proto_data(wmem_file_scope(), pinfo, proto_fp, 0, fpi);
    }

    fpi->is_uplink = pinfo->p2p_dir == P2P_DIR_RECV;
    /* TODO make this configurable */
    fpi->release = 7;
    fpi->release_year = 2008;
    fpi->release_month = 9;
    fpi->dch_crc_present = 1;

    switch (frame_type) {
        case FPH_FRAME_ATM_AAL2:
            fpi->link_type = FP_Link_ATM;
            break;
        case FPH_FRAME_ETHERNET:
            fpi->link_type = FP_Link_Ethernet;
            break;
        default:
            fpi->link_type = FP_Link_Unknown;
    }

    /* at the moment, only IuB is supported */
    fpi->iface_type = IuB_Interface;
    /* at the moment, only FDD is supported */
    fpi->division = Division_FDD;

    switch (channel_type) {
        case FPH_CHANNEL_PCH:
            assign_fph_pch(tvb, pinfo, offset, fpi, tree);
            break;
        case FPH_CHANNEL_RACH:
            assign_fph_rach(tvb, pinfo, offset, fpi, tree);
            break;
        case FPH_CHANNEL_FACH:
            assign_fph_fach(tvb, pinfo, offset, fpi, tree);
            break;
        case FPH_CHANNEL_DCH:
            assign_fph_dch(tvb, pinfo, offset, fpi, tree);
            break;
        case FPH_CHANNEL_HSDSCH:
            assign_fph_hsdsch(tvb, pinfo, offset, fpi, tree);
            break;
        case FPH_CHANNEL_EDCH:
            assign_fph_edch(tvb, pinfo, offset, fpi, tree);
            break;
        default:
            fpi->channel = 0;
    }
}

static int dissect_fp_hint(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
    guint8 frame_type, channel_type;
    guint16 hdrlen;
    guint32 atm_hdr, aal2_ext;
    tvbuff_t *next_tvb;
    dissector_handle_t next_dissector;
    void *next_dissector_data;
    proto_item *ti;
    proto_tree *fph_tree = NULL;
    struct atm_phdr atm_info;

    col_set_str(pinfo->cinfo, COL_PROTOCOL, "FP Hint");

    hdrlen = tvb_get_letohs(tvb, 0);
    frame_type = tvb_get_guint8(tvb, 2);
    channel_type = tvb_get_guint8(tvb, 3);

    if (tree) {
        ti = proto_tree_add_item(tree, proto_fp_hint, tvb, 0, hdrlen, ENC_NA);
        fph_tree = proto_item_add_subtree(ti, ett_fph);
        proto_tree_add_uint(fph_tree, hf_fph_frametype, tvb, 2, 1, frame_type);
        proto_tree_add_uint(fph_tree, hf_fph_channeltype, tvb, 3, 1, channel_type);
    }

    /* attach FP, MAC, RLC information */
    attach_info(tvb, pinfo, 4, channel_type, frame_type, fph_tree);
    switch (frame_type) {
        case FPH_FRAME_ATM_AAL2:
            aal2_ext = tvb_get_ntohl(tvb, hdrlen); hdrlen += 4;
            atm_hdr = tvb_get_ntohl(tvb, hdrlen); hdrlen += 4;
            memset(&atm_info, 0, sizeof(atm_info));
            atm_info.aal = AAL_2;
            /* atm_info.flags = pinfo->p2p_dir; */
            atm_info.flags = ATM_AAL2_NOPHDR;
            atm_info.vpi = ((atm_hdr & 0x0ff00000) >> 20);
            atm_info.vci = ((atm_hdr & 0x000ffff0) >>  4);
            atm_info.aal2_cid = aal2_ext & 0x000000ff;
            atm_info.type = TRAF_UMTS_FP;
            next_dissector = atm_untrunc_handle;
            next_dissector_data = &atm_info;
            break;
        case FPH_FRAME_ETHERNET:
            next_dissector = ethwithfcs_handle;
            next_dissector_data = NULL;
            break;
        default:
            next_dissector = data_handle;
            next_dissector_data = NULL;
            break;
    }

    next_tvb = tvb_new_subset_remaining(tvb, hdrlen);
    call_dissector_with_data(next_dissector, next_tvb, pinfo, tree,
                             next_dissector_data);
    return tvb_captured_length(tvb);
}

void
proto_register_fp_hint(void)
{
    static hf_register_info hf[] = {
        { &hf_fph_frametype, { "Frame Type", "fp_hint.frame_type", FT_UINT8, BASE_HEX, VALS(fph_frametype_vals), 0x0, NULL, HFILL } },
        { &hf_fph_channeltype, { "Channel Type", "fp_hint.channel_type", FT_UINT8, BASE_HEX, VALS(fph_channeltype_vals), 0x0, NULL, HFILL } },
        { &hf_fph_chcnt, { "Number of Channels", "fp_hint.num_chan", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },
        { &hf_fph_dchid, { "DCH ID", "fp_hint.dchid", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },
        { &hf_fph_macdflowid, { "MACd Flow ID", "fp_hint.macdflowid", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },
        { &hf_fph_macehs, { "MAC-ehs indicator", "fp_hint.mac_ehs", FT_BOOLEAN, BASE_NONE, NULL, 0, NULL, HFILL } },
        /* traffic format details */
        { &hf_fph_tf, { "Traffic Format", "fp_hint.tf", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL } },
        { &hf_fph_tf_n, { "N", "fp_hint.tf.n", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL } },
        { &hf_fph_tf_size, { "Size", "fp_hint.tf.size", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL } },
        /* DDI information for E-DCH */
        { &hf_fph_ddi_entry, { "DDI Entry", "fp_hint.ddi", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL } },
        { &hf_fph_ddi_value, { "DDI", "fp_hint.ddi.value", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },
        { &hf_fph_ddi_logical, { "Logical Channel ID", "fp_hint.ddi.logical", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },
        { &hf_fph_ddi_size, { "Size", "fp_hint.ddi.size", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL } },
        /* radio bearer details */
        { &hf_fph_rb, { "Radio Bearer", "fp_hint.rb", FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL } },
        { &hf_fph_urnti, { "U-RNTI", "fp_hint.rb.urnti", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
        { &hf_fph_content, { "Content", "fp_hint.rb.content", FT_UINT8, BASE_DEC, VALS(fph_content_vals), 0, NULL, HFILL } },
        { &hf_fph_rlcmode, { "RLC Mode", "fp_hint.rb.rlc_mode", FT_UINT8, BASE_DEC, VALS(fph_rlcmode_vals), 0, NULL, HFILL } },
        { &hf_fph_rbid, { "Radio Bearer ID", "fp_hint.rb.rbid", FT_UINT16, BASE_DEC, NULL, 0x01f0, NULL, HFILL } },
        { &hf_fph_ctmux, { "C/T Mux", "fp_hint.rb.ctmux", FT_BOOLEAN, BASE_NONE, TFS(&fph_ctmux_vals), 0, "C/T Mux field", HFILL } },
        { &hf_fph_ciphered, { "Ciphered", "fp_hint.rb.ciphered", FT_BOOLEAN, BASE_NONE, TFS(&fph_ciphered_vals), 0, "Ciphered flag", HFILL } },
        { &hf_fph_deciphered, { "Deciphered", "fp_hint.rb.deciphered", FT_BOOLEAN, BASE_NONE, TFS(&fph_deciphered_vals), 0, "Deciphered flag", HFILL } }
    };

    static gint *ett[] = {
        &ett_fph,
        &ett_fph_rb,
        &ett_fph_ddi_entry,
        &ett_fph_tf
    };

    static ei_register_info ei[] = {
        { &ei_fph_radio_bearers, { "fp_hint.rb.invalid", PI_PROTOCOL, PI_WARN, "Frame contains more Radio Bearers than currently supported", EXPFILL }},
        { &ei_fph_mac_frames, { "fp_hint.mac_frames.invalid", PI_PROTOCOL, PI_WARN, "Frame contains more MAC Frames than currently supported", EXPFILL }},
        { &ei_fph_fp_channels, { "fp_hint.fp_channels.invalid", PI_PROTOCOL, PI_WARN, "Frame contains more FP channels than currently supported", EXPFILL }},
    };

    expert_module_t* expert_fp_hint;

    proto_fp_hint = proto_register_protocol("FP Hint", "FP Hint", "fp_hint");
    register_dissector("fp_hint", dissect_fp_hint, proto_fp_hint);

    proto_register_field_array(proto_fp_hint, hf, array_length(hf));
    proto_register_subtree_array(ett, array_length(ett));
    expert_fp_hint = expert_register_protocol(proto_fp_hint);
    expert_register_field_array(expert_fp_hint, ei, array_length(ei));
}

void
proto_reg_handoff_fp_hint(void)
{
    atm_untrunc_handle = find_dissector_add_dependency("atm_untruncated", proto_fp_hint);
    data_handle = find_dissector("data");
    ethwithfcs_handle = find_dissector_add_dependency("eth_withfcs", proto_fp_hint);
}


/*
 * 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:
 */