/* packet-fcip.c
 * Routines for FCIP dissection
 * Copyright 2001, Dinesh G Dutt (ddutt@cisco.com)
 *
 * $Id: packet-fcip.c,v 1.3 2003/01/28 23:56:39 guy Exp $
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@ethereal.com>
 * Copyright 1998 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <glib.h>

#include <epan/packet.h>
#include "prefs.h"
#include <epan/conversation.h>

#define FCIP_ENCAP_HEADER_LEN                    28
#define FCIP_MIN_HEADER_LEN                      16 /* upto frame len field */ 
#define FCIP_ENCAP_PROTO_VER                     0xFEFE0101
#define FCIP_IS_SF(pflags)                       ((pflags & 0x1) == 0x1)
#define FCIP_IS_CH(pflags)                       ((pflags & 0x80) == 0x80)

typedef enum {
    FCIP_EOFn    = 0x41,
    FCIP_EOFt    = 0x42,
    FCIP_EOFrt   = 0x44,
    FCIP_EOFdt   = 0x46,
    FCIP_EOFni   = 0x49,
    FCIP_EOFdti  = 0x4E,
    FCIP_EOFrti  = 0x4F,
    FCIP_EOFa    = 0x50,
} fcip_eof_t;

typedef enum {
    FCIP_SOFf    = 0x28,
    FCIP_SOFi4   = 0x29,
    FCIP_SOFi2   = 0x2D,
    FCIP_SOFi3   = 0x2E,
    FCIP_SOFn4   = 0x31,
    FCIP_SOFn2   = 0x35,
    FCIP_SOFn3   = 0x36,
    FCIP_SOFc4   = 0x39,
} fcip_sof_t;

typedef enum {
    FCENCAP_PROTO_FCIP = 1,
    FCENCAP_PROTO_iFCP = 2,
} fcencap_proto_t;

static const value_string fcip_eof_vals[] = {
    {FCIP_EOFn, "EOFn" },
    {FCIP_EOFt, "EOFt" },
    {FCIP_EOFrt, "EOFrt" },
    {FCIP_EOFdt, "EOFdt" },
    {FCIP_EOFni, "EOFni" },
    {FCIP_EOFdti, "EOFdti" },
    {FCIP_EOFrti, "EOFrti" },
    {FCIP_EOFa, "EOFa" },
    {0, NULL},
};

static const value_string fcip_sof_vals[] = {
    {FCIP_SOFf, "SOFf" },
    {FCIP_SOFi4, "SOFi4" },
    {FCIP_SOFi2, "SOFi2" },
    {FCIP_SOFi3, "SOFi3" },
    {FCIP_SOFn4, "SOFn4" },
    {FCIP_SOFn2, "SOFn2" },
    {FCIP_SOFn3, "SOFn3" },
    {FCIP_SOFc4, "SOFc4" },
    {0, NULL},
};

static const value_string fcencap_proto_vals[] = {
    {FCENCAP_PROTO_FCIP, "FCIP"},
    {FCENCAP_PROTO_iFCP, "iFCP"},
};

static const value_string fsf_conn_flag_vals[] = {
    {0, NULL},
};

static const gchar * sof_strings[] = {
    "SOFf", "SOFi4", "", "", "", "SOFi2", "SOFi3", "", "", "SOFn4", "", "", "",
    "SOFn2", "SOFn3", "", "", "SOFc4", "",
};

static const gchar *eof_strings[] = {
    "EOFn", "EOFt", "", "EOFrt", "", "EOFdt", "", "", "EOFni", "", "", "", "",
    "EOFdti", "EOFrti", "EOFa", "",
};

static guint fcip_header_2_bytes[2] = {FCIP_ENCAP_PROTO_VER,
                                       FCIP_ENCAP_PROTO_VER};

static int proto_fcip          = -1;

static int hf_fcip_protocol    = -1;
static int hf_fcip_protocol_c  = -1;
static int hf_fcip_version     = -1;
static int hf_fcip_version_c   = -1;
static int hf_fcip_encap_word1 = -1;
static int hf_fcip_flags       = -1;
static int hf_fcip_flags_c     = -1;
static int hf_fcip_framelen    = -1;
static int hf_fcip_framelen_c  = -1;
static int hf_fcip_tsec        = -1;
static int hf_fcip_tusec       = -1;
static int hf_fcip_encap_crc   = -1;
static int hf_fcip_sof         = -1;
static int hf_fcip_sof_c       = -1;
static int hf_fcip_eof         = -1;
static int hf_fcip_eof_c       = -1;
static int hf_fcip_pflags_changed = -1;
static int hf_fcip_pflags_special = -1;
static int hf_fcip_pflags_c = -1;
static int hf_fcip_src_wwn = -1;
static int hf_fcip_dst_wwn = -1;
static int hf_fcip_conn_code = -1;
static int hf_fcip_katov = -1;
static int hf_fcip_src_entity_id = -1;
static int hf_fcip_conn_nonce = -1;
static int hf_fcip_conn_flags = -1;

static int ett_fcip            = -1;

static guint fcip_port         = 3225;
static gboolean fcip_desegment    = TRUE;

static dissector_handle_t data_handle;
static dissector_handle_t fc_handle;

/* This routine attempts to locate the position of the next header in the
 * provided segment
 */
static guint
get_next_fcip_header_offset (tvbuff_t *tvb, packet_info *pinfo, gint offset)
{
    gint bytes_remaining = tvb_length_remaining (tvb, offset);
    gint frame_len;
    guint16 flen, flen1;
    fcip_eof_t eof, eofc;

    /*
     * As per the FCIP standard, the following tests must PASS:
     * 1)  Frame Length field validation -- 15 < Frame Length < 545;
     * 2)  Comparison of Frame Length field to its ones complement; and
     * 3)  A valid EOF is found in the word preceding the start of the next
     *     FCIP header as indicated by the Frame Length field, to be tested
     *     as follows:
     *     1)  Bits 24-31 and 16-23 contain identical legal EOF values (the
     *         list of legal EOF values is in the FC Frame Encapsulation
     *         [21]); and
     *     2)  Bits 8-15 and 0-7 contain the ones complement of the EOF
     *         value found in bits 24-31.
     *
     * As per the FCIP standard, in addition, at least 3 of the following set
     * of tests must be performed to identify that we've located the start of
     * an FCIP frame. 
     * a)  Protocol# ones complement field (1 test);
     * b)  Version ones complement field (1 test);
     * c)  Replication of encapsulation word 0 in word 1 (1 test);
     * d)  Reserved field and its ones complement (2 tests);
     * e)  Flags field and its ones complement (2 tests);
     * f)  CRC field is equal to zero (1 test);
     * g)  SOF fields and ones complement fields (4 tests);
     * h)  Format and values of FC header (1 test);
     * i)  CRC of FC Frame (2 tests);
     * j)  FC Frame Encapsulation header information in the next FCIP Frame
     *     (1 test).
     *
     * At least 3 of the 16 tests listed above SHALL be performed. Failure
     * of any of the above tests actually performed SHALL indicate an
     * encapsulation error and the FC Frame SHALL NOT be forwarded on to
     * the FC Entity.
     */

NXT_BYTE: while (bytes_remaining) {
        if (bytes_remaining < FCIP_ENCAP_HEADER_LEN) {
            if(fcip_desegment && pinfo->can_desegment) {
                /*
                 * This frame doesn't have all of the data for
                 * this message, but we can do reassembly on it.
                 *
                 * Tell the TCP dissector where the data for this
                 * message starts in the data it handed us, and
                 * how many more bytes we need, and return.
                 */
                pinfo->desegment_offset = offset;
                pinfo->desegment_len = FCIP_ENCAP_HEADER_LEN;
                return -2;
            }
        }

        /* I check that we have a valid header before checking for the frame
         * length and the other initial tests.
         */

        /*
         * Tests a, b and c
         */
        if (memcmp ((void *)tvb_get_ptr (tvb, offset, 8),
                    (void *)fcip_header_2_bytes, 8) != 0) {
            offset++;
            bytes_remaining--;
            goto NXT_BYTE;
        }

        flen = (tvb_get_ntohs (tvb, offset+12)) & 0x03FF;
        frame_len = (tvb_get_ntohs (tvb, offset+12) & 0x03FF)*4;
        
        if ((flen < 15) || (flen > 545)) {
            /* Frame length check failed. Skip byte and try again */
            offset++;
            bytes_remaining--;
            goto NXT_BYTE;
        }

        flen1 = (tvb_get_ntohs (tvb, offset+14)) & 0x03FF;
        
        if ((flen & 0x03FF) != ((~flen1)&0x03FF)) {
            /* frame_len and its one's complement are not the same */
            offset++;
            bytes_remaining--;
            goto NXT_BYTE;
        }

        /* Valid EOF check */
        if (tvb_bytes_exist (tvb, offset+(frame_len-1)*4, 4)) {
            eof = (fcip_eof_t)tvb_get_guint8 (tvb, offset+(frame_len-1)*4);
            eofc = (fcip_eof_t)tvb_get_guint8 (tvb, offset+(frame_len-1)*4+2);

            if ((eof != FCIP_EOFn) && (eof != FCIP_EOFt) && (eof != FCIP_EOFrt)
                && (eof != FCIP_EOFdt) && (eof != FCIP_EOFni) &&
                (eof != FCIP_EOFdti) && (eof != FCIP_EOFrti) &&
                (eof != FCIP_EOFa)) {
                offset++;
                bytes_remaining--;
                goto NXT_BYTE;
            }
            
            if ((eof != ~eofc) ||
                (eof != tvb_get_guint8 (tvb, offset+(frame_len-1)*4+1)) ||
                (eofc != tvb_get_guint8 (tvb, offset+(frame_len-1)*4+3))) {
                offset++;
                bytes_remaining--;
                goto NXT_BYTE;
            }
        }
        
        /* Test d */
        if ((tvb_get_guint8 (tvb, offset+9) != 0) ||
            (tvb_get_guint8 (tvb, offset+11) != 0xFF)) {
            /* Failed */
            offset++;
            bytes_remaining--;
            goto NXT_BYTE;
        }
        
        /* Test e */
        
        /* Test f */
        if (tvb_get_ntohl (tvb, offset+24)) {
            /* Failed */
            offset++;
            bytes_remaining--;
            goto NXT_BYTE;
        }
        
        if (bytes_remaining >= (frame_len)) {
            if (tvb_bytes_exist (tvb, offset+frame_len, 8)) {
                /* The start of the next header matches what we wish to see */ 
                if (memcmp ((void *)tvb_get_ptr (tvb, offset+frame_len, 8),
                            (void *)fcip_header_2_bytes, 8) == 0) {
                    return (offset);
                }
                else {
                    offset++;
                    bytes_remaining--;
                    goto NXT_BYTE;
                }
            }
            else {
                return (offset);
            }
        }
        else {
            if(fcip_desegment && pinfo->can_desegment) {
                /*
                 * This frame doesn't have all of the data for
                 * this message, but we can do reassembly on it.
                 *
                 * Tell the TCP dissector where the data for this
                 * message starts in the data it handed us, and
                 * how many more bytes we need, and return.
                 */
                pinfo->desegment_offset = offset;
                pinfo->desegment_len = frame_len - bytes_remaining;
                return -2;
            }
            else {
                return (offset);
            }
        }
    }

    return (-1);                /* Unable to find FCIP header */
}

static void
dissect_fcencap_header (tvbuff_t *tvb, proto_tree *tree, gint offset)
{
    guint8 protocol = tvb_get_guint8 (tvb, offset);
    
    if (tree) {
        proto_tree_add_item (tree, hf_fcip_protocol, tvb, offset, 1, 0);
        proto_tree_add_item (tree, hf_fcip_version, tvb, offset+1, 1, 0);
        proto_tree_add_item (tree, hf_fcip_protocol_c, tvb, offset+2, 1, 0);
        proto_tree_add_item (tree, hf_fcip_version_c, tvb, offset+3, 1, 0);

        if (protocol == FCENCAP_PROTO_FCIP) {
            proto_tree_add_item (tree, hf_fcip_encap_word1, tvb, offset+4,
                                 4, 0);
            proto_tree_add_item (tree, hf_fcip_pflags_changed, tvb, offset+8,
                                 1, 0);
            proto_tree_add_item (tree, hf_fcip_pflags_special, tvb, offset+8,
                                 1, 0);
            proto_tree_add_item (tree, hf_fcip_pflags_c, tvb, offset+10, 1, 0);
        }

        proto_tree_add_item (tree, hf_fcip_flags, tvb, offset+12, 1, 0);
        proto_tree_add_item (tree, hf_fcip_framelen, tvb, offset+12, 2, 0);
        proto_tree_add_item (tree, hf_fcip_flags_c, tvb, offset+14, 1, 0);
        proto_tree_add_item (tree, hf_fcip_framelen_c, tvb, offset+14, 2, 0);
        proto_tree_add_item (tree, hf_fcip_tsec, tvb, offset+16, 4, 0);
        proto_tree_add_item (tree, hf_fcip_tusec, tvb, offset+20, 4, 0);
        proto_tree_add_item (tree, hf_fcip_encap_crc, tvb, offset+24, 4, 0);
    }
}

static void
dissect_fcip_sf (tvbuff_t *tvb, proto_tree *tree, gint offset)
{
    if (tree) {
        proto_tree_add_string (tree, hf_fcip_src_wwn, tvb, offset, 8,
                               fcwwn_to_str (tvb_get_ptr (tvb, offset, 8)));
        proto_tree_add_bytes (tree, hf_fcip_src_entity_id, tvb, offset+8, 8,
                              tvb_get_ptr (tvb, offset+8, 8));
        proto_tree_add_bytes (tree, hf_fcip_conn_nonce, tvb, offset+16, 8,
                              tvb_get_ptr (tvb, offset+16, 8));
        proto_tree_add_item (tree, hf_fcip_conn_flags, tvb, offset+24, 1, 0);
        proto_tree_add_item (tree, hf_fcip_conn_code, tvb, offset+26, 2, 0);
        proto_tree_add_string (tree, hf_fcip_dst_wwn, tvb, offset+30, 8,
                               fcwwn_to_str (tvb_get_ptr (tvb, offset+30, 8)));
        proto_tree_add_item (tree, hf_fcip_katov, tvb, offset+38, 4, 0);
    }
}

static gboolean
dissect_fcip (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
    gint offset = 0,
         start  = 0,
         frame_len = 0;
    guint bytes_remaining = tvb_length_remaining (tvb, offset);
    guint8 pflags, sof, eof;
   /* Set up structures needed to add the protocol subtree and manage it */
    proto_item *ti;
    proto_tree *fcip_tree = NULL;
    tvbuff_t *next_tvb;
    
    if (!proto_is_protocol_enabled(proto_fcip))
	return FALSE;	/* iSCSI has been disabled */

    if (bytes_remaining < FCIP_ENCAP_HEADER_LEN) {
        return FALSE;
    }

    if ((pinfo->srcport != fcip_port) && (pinfo->destport != fcip_port)) {
        return FALSE;
    }

    while (bytes_remaining > FCIP_ENCAP_HEADER_LEN) {
        if ((offset = get_next_fcip_header_offset (tvb, pinfo, offset)) == -1) { 
            return FALSE;
        }
        else if (offset == -2) {
            /* We need more data to desegment */
            return (TRUE);
        }

        start = offset;
        if (check_col(pinfo->cinfo, COL_PROTOCOL)) 
            col_set_str(pinfo->cinfo, COL_PROTOCOL, "FCIP");

        frame_len = (tvb_get_ntohs (tvb, offset+12) & 0x03FF)*4;
        
        pflags = tvb_get_guint8 (tvb, start+8);
        
        if (tree) {
            if (FCIP_IS_SF (pflags)) {
                ti = proto_tree_add_protocol_format (tree, proto_fcip, tvb, 0,
                                                     FCIP_ENCAP_HEADER_LEN,
                                                     "FCIP");
            }
            else {
                sof = tvb_get_guint8 (tvb, offset+FCIP_ENCAP_HEADER_LEN) - 0x28;
                eof = tvb_get_guint8 (tvb, offset+frame_len - 4) - 0x41;

                if (sof > 18) {
                    sof = 18; /* The last SOF */
                }
                if (eof > 15) {
                    eof = 16;
                }
                
                ti = proto_tree_add_protocol_format (tree, proto_fcip, tvb, 0,
                                                     FCIP_ENCAP_HEADER_LEN,
                                                     "FCIP (%s/%s)",
                                                     sof_strings[sof],
                                                     eof_strings[eof]);
            }
            fcip_tree = proto_item_add_subtree (ti, ett_fcip);
            /* Dissect the Common FC Encap header */
            dissect_fcencap_header (tvb, fcip_tree, offset);

            offset += FCIP_ENCAP_HEADER_LEN;

            if (!FCIP_IS_SF (pflags)) {
                /* print SOF */
                proto_tree_add_item (fcip_tree, hf_fcip_sof, tvb, offset, 1, 0);
                proto_tree_add_item (fcip_tree, hf_fcip_sof_c, tvb, offset+2, 1, 0);
                /* print EOF */
                
                offset += (frame_len-FCIP_ENCAP_HEADER_LEN-4);
                proto_tree_add_item (fcip_tree, hf_fcip_eof, tvb, offset, 1, 0);
                proto_tree_add_item (fcip_tree, hf_fcip_eof_c, tvb, offset+2, 1, 0);
            }
        }

        /* Call the FC Dissector if this is carrying an FC frame */
        if (!FCIP_IS_SF(pflags)) {
            /* Special frame bit is not set */
            next_tvb = tvb_new_subset (tvb, FCIP_ENCAP_HEADER_LEN+4, -1, -1);
            if (fc_handle) {
                call_dissector (fc_handle, next_tvb, pinfo, tree);
            }
            else if (data_handle) {
                call_dissector (data_handle, next_tvb, pinfo, tree);
            }
        }
        else {
            if (check_col(pinfo->cinfo, COL_INFO)) 
                col_set_str(pinfo->cinfo, COL_INFO, "Special Frame");
            if (FCIP_IS_CH (pflags)) {
                if (check_col(pinfo->cinfo, COL_INFO)) 
                    col_append_str(pinfo->cinfo, COL_INFO, "(Changed)");
            }

            dissect_fcip_sf (tvb, fcip_tree, offset+4);
        }

        bytes_remaining -= frame_len;
    }

    return (TRUE);
}

void
proto_register_fcip (void)
{

    /* Setup list of header fields  See Section 1.6.1 for details*/
    static hf_register_info hf[] = {
        { &hf_fcip_protocol,
	  { "Protocol", "fcencap.proto", FT_UINT8, BASE_DEC, NULL, 0,
	    "Protocol", HFILL }},
        { &hf_fcip_protocol_c,
          {"Protocol (1's Complement)", "fcencap.protoc", FT_UINT8, BASE_DEC, NULL,
           0, "Protocol (1's Complement)", HFILL}},
        { &hf_fcip_version,
          {"Version", "fcencap.version", FT_UINT8, BASE_DEC, NULL, 0, "",
           HFILL}},
        { &hf_fcip_version_c,
          {"Version (1's Complement)", "fcencap.versionc", FT_UINT8, BASE_DEC,
           NULL, 0, "", HFILL}},
        { &hf_fcip_encap_word1,
          {"FCIP Encapsulation Word1", "fcip.word1", FT_UINT32, BASE_HEX, NULL,
           0, "", HFILL}},
        { &hf_fcip_flags,
          {"Flags", "fcencap.flags", FT_UINT8, BASE_HEX, NULL, 0xFC, "", HFILL}},
        { &hf_fcip_flags_c,
          {"Flags (1's Complement)", "fcencap.flagsc", FT_UINT8, BASE_HEX,
           NULL, 0xFC, "", HFILL}},
        { &hf_fcip_framelen,
          {"Frame Length (in Words)", "fcencap.framelen", FT_UINT16, BASE_DEC,
           NULL, 0x03FF, "", HFILL}},
        { &hf_fcip_framelen_c,
          {"Frame Length (1's Complement)", "fcencap.framelenc", FT_UINT16,
           BASE_DEC, NULL, 0x03FF, "", HFILL}},
        { &hf_fcip_tsec,
          {"Time (secs)", "fcencap.tsec", FT_UINT32, BASE_DEC, NULL, 0, "",
           HFILL}},
        { &hf_fcip_tusec,
          {"Time (fraction)", "fcencap.tusec", FT_UINT32, BASE_DEC, NULL, 0,
           "", HFILL}},
        { &hf_fcip_encap_crc,
          {"CRC", "fcencap.crc", FT_UINT32, BASE_HEX, NULL, 0, "", HFILL}},
        { &hf_fcip_sof,
          {"SOF", "fcip.sof", FT_UINT8, BASE_HEX, VALS (&fcip_sof_vals), 0,
           "", HFILL}},
        { &hf_fcip_sof_c,
          {"SOF (1's Complement)", "fcip.sofc", FT_UINT8, BASE_HEX, NULL,
           0, "", HFILL}},
        { &hf_fcip_eof,
          {"EOF", "fcip.eof", FT_UINT8, BASE_HEX, VALS (&fcip_eof_vals), 0,
           "", HFILL}},
        { &hf_fcip_eof_c,
          {"EOF (1's Complement)", "fcip.eofc", FT_UINT8, BASE_HEX, NULL,
           0, "", HFILL}},
        { &hf_fcip_pflags_changed,
          {"Changed Flag", "fcip.pflags.ch", FT_BOOLEAN, BASE_DEC, NULL, 0x80,
           "", HFILL}},
        { &hf_fcip_pflags_special,
          {"Special Frame Flag", "fcip.pflags.sf", FT_BOOLEAN, BASE_DEC, NULL,
           0x1, "", HFILL}},
        { &hf_fcip_pflags_c,
          {"Pflags (1's Complement)", "fcip.pflagsc", FT_UINT8, BASE_HEX, NULL,
           0x0, "", HFILL}},
        { &hf_fcip_src_wwn,
          {"Source Fabric WWN", "fcip.srcwwn", FT_STRING, BASE_HEX, NULL, 0x0, 
           "", HFILL}},
        { &hf_fcip_dst_wwn,
          {"Destination Fabric WWN", "fcip.dstwwn", FT_STRING, BASE_HEX, NULL,
           0x0, "", HFILL}},
        { &hf_fcip_src_entity_id,
          {"FC/FCIP Entity Id", "fcip.srcid", FT_BYTES, BASE_HEX, NULL, 0x0,
           "", HFILL}},
        { &hf_fcip_conn_flags,
          {"Connection Usage Flags", "fcip.connflags", FT_UINT8, BASE_HEX,
           NULL, 0x0, "", HFILL}},
        { &hf_fcip_conn_code,
          {"Connection Usage Code", "fcip.conncode", FT_UINT16, BASE_HEX, NULL,
           0x0, "", HFILL}},
        { &hf_fcip_katov,
          {"K_A_TOV", "fcip.katov", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL}},
        { &hf_fcip_conn_nonce,
          {"Connection Nonce", "fcip.nonce", FT_BYTES, BASE_HEX, NULL, 0x0, "",
           HFILL}},
    };

    static gint *ett[] = {
        &ett_fcip,
    };
    
    module_t *fcip_module;

    /* Register the protocol name and description */
    proto_fcip = proto_register_protocol("FCIP", "FCIP", "fcip");

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

    fcip_module = prefs_register_protocol(proto_fcip, NULL);
    prefs_register_bool_preference(fcip_module,
                                   "desegment",
                                   "Desegment FCIP messages",
                                   "When enabled, FCIP messages that span multiple TCP segments are desegmented",
                                   &fcip_desegment);
    prefs_register_uint_preference(fcip_module,
                                   "target_port",
                                   "Target port",
                                   "Port number used for FCIP",
                                   10,
                                   &fcip_port);
}


/*
 * If this dissector uses sub-dissector registration add a
 * registration routine.
 */

/*
 * This format is required because a script is used to find these
 * routines and create the code that calls these routines.
 */
void
proto_reg_handoff_fcip (void)
{
    heur_dissector_add("tcp", dissect_fcip, proto_fcip);
    data_handle = find_dissector("data");
    fc_handle = find_dissector("fc");
}