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Diffstat (limited to 'epan/dissectors/packet-hyperscsi.c')
-rw-r--r-- | epan/dissectors/packet-hyperscsi.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/epan/dissectors/packet-hyperscsi.c b/epan/dissectors/packet-hyperscsi.c new file mode 100644 index 0000000000..f4ed93349a --- /dev/null +++ b/epan/dissectors/packet-hyperscsi.c @@ -0,0 +1,223 @@ +/* packet-ip.c + * Routines for dissassembly of the Hyper SCSI protocol. + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * Copyright 2002 Richard Sharpe <rsharpe@richardsharpe.com> + * + * 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 <string.h> +#include <glib.h> + +#ifdef NEED_SNPRINTF_H +# include "snprintf.h" +#endif + +#include <epan/packet.h> + +static int proto_hyperscsi; + +static int hf_hs_cmd = -1; +static int hf_hs_ver = -1; +static int hf_hs_res = -1; +static int hf_hs_tagno = -1; +static int hf_hs_lastfrag = -1; +static int hf_hs_fragno = -1; + +static gint ett_hyperscsi = -1; +static gint ett_hs_hdr = -1; +static gint ett_hs_pdu = -1; + +static const true_false_string tfs_lastfrag = { + "Last Fragment", + "Not Last Fragment" +}; + +#define HSCSI_OPCODE_REQUEST 0x00 +#define HSCSI_OPCODE_REPLY 0x01 +#define HSCSI_OPCODE_DEV_DISCOVERY 0x10 +#define HSCSI_OPCODE_ADN_REQUEST 0x11 +#define HSCSI_OPCODE_ADN_REPLY 0x12 +#define HSCSI_OPCODE_DISCONNECT 0x13 +#define HSCSI_OPCODE_ACK_SNR 0x20 +#define HSCSI_OPCODE_ACK_REPLY 0x21 +#define HSCSI_OPCODE_ADDR_REPORT 0x30 +#define HSCSI_OPCODE_ADDR_REPLY 0x31 +#define HSCSI_OPCODE_LOCAL_REQUEST 0x32 +#define HSCSI_OPCODE_LOCAL_REPLY 0x33 +#define HSCSI_OPCODE_REMOTE_REQUEST 0x34 +#define HSCSI_OPCODE_REMOTE_REPLY 0x35 + +static const value_string hscsi_opcodes[] = { + { HSCSI_OPCODE_REQUEST, "Command Block Encap Request"}, + { HSCSI_OPCODE_REPLY, "Command Block Encap Reply"}, + { HSCSI_OPCODE_DEV_DISCOVERY, "Device Discovery Reply"}, + { HSCSI_OPCODE_ADN_REQUEST, "Auth/Device Neg Request"}, + { HSCSI_OPCODE_ADN_REPLY, "Auth/Device Neg Reply"}, + { HSCSI_OPCODE_DISCONNECT, "Disconnect Request"}, + { HSCSI_OPCODE_ACK_SNR, "Flow Control Setup/Ack Request"}, + { HSCSI_OPCODE_ACK_REPLY, "Flow Control Ack Reply"}, + { 0, NULL} +}; + +#define OPCODE_MASK 0x7F + +static void +dissect_hyperscsi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + guint hs_hdr1, hs_hdr2, hs_hdr3; + guint8 hs_res; + guint16 hs_tagno; + guint16 hs_fragno; + gint offset = 0; + proto_tree *hs_hdr_tree, *hs_pdu_tree; + proto_tree *hs_tree = NULL; + proto_item *ti; + guint8 hs_cmd, hs_ver; + char *opcode_str; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "HYPERSCSI"); + if (check_col(pinfo->cinfo, COL_INFO)) + col_clear(pinfo->cinfo, COL_INFO); + + if (tree) { + ti = proto_tree_add_item(tree, proto_hyperscsi, tvb, offset, -1, FALSE); + hs_tree = proto_item_add_subtree(ti, ett_hyperscsi); + } + + hs_hdr1 = tvb_get_guint8(tvb, offset); + offset++; + hs_hdr2 = tvb_get_guint8(tvb, offset); + offset++; + hs_hdr3 = tvb_get_guint8(tvb, offset); + offset++; + + hs_res = hs_hdr1 >> 4; + hs_tagno = ((hs_hdr1 & 0x0F) << 5 ) | (hs_hdr2 >> 3); + hs_fragno = ((hs_hdr2 &0X03) << 8 ) | hs_hdr3; + + /* + * Add the header ... three bytes + */ + + if (tree) { + ti = proto_tree_add_text(hs_tree, tvb, 0, 3, "HyperSCSI Header"); + hs_hdr_tree = proto_item_add_subtree(ti, ett_hs_hdr); + + /* + * Now, add the header items + */ + + proto_tree_add_uint(hs_hdr_tree, hf_hs_res, tvb, 0, 1, hs_res); + proto_tree_add_uint(hs_hdr_tree, hf_hs_tagno, tvb, 0, 2, hs_tagno); + proto_tree_add_item(hs_hdr_tree, hf_hs_lastfrag, tvb, 1, 1, FALSE); + proto_tree_add_uint(hs_hdr_tree, hf_hs_fragno, tvb, 1, 2, hs_fragno); + + } + + /* + * Now, add the PDU + */ + + hs_ver = tvb_get_guint8(tvb, offset++); + + hs_cmd = tvb_get_guint8(tvb, offset++); + + hs_cmd &= OPCODE_MASK; + + opcode_str = match_strval(hs_cmd, hscsi_opcodes); + + if (!opcode_str) + opcode_str = "Unknown HyperSCSI Request or Response"; + + if (check_col(pinfo->cinfo, COL_INFO)) { + col_append_str(pinfo->cinfo, COL_INFO, (char *)opcode_str); + } + + if (tree) { + ti = proto_tree_add_text(hs_tree, tvb, 3, -1, "HyperSCSI PDU"); + hs_pdu_tree = proto_item_add_subtree(ti, ett_hs_pdu); + + proto_tree_add_uint(hs_pdu_tree, hf_hs_ver, tvb, 3, 1, hs_ver); + + proto_tree_add_uint_format(hs_pdu_tree, hf_hs_cmd, tvb, 4, 1, hs_cmd, "HyperSCSI Command: %s", opcode_str); + } + +} + +void +proto_register_hyperscsi(void) +{ + + static hf_register_info hf[] = { + { &hf_hs_res, + { "Reserved", "hyperscsi.reserved", FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL}}, + + { &hf_hs_tagno, + { "Tag No", "hyperscsi.tagno", FT_UINT16, BASE_DEC, NULL, 0x0, + "", HFILL }}, + + { &hf_hs_lastfrag, + { "Last Fragment", "hyperscsi.lastfrag", FT_BOOLEAN, 8, TFS(&tfs_lastfrag), 0x04, "", HFILL}}, + + { &hf_hs_fragno, + { "Fragment No", "hyperscsi.fragno", FT_UINT16, BASE_DEC, NULL, 0x0, + "", HFILL}}, + + { &hf_hs_ver, + { "HyperSCSI Version", "hyperscsi.version", FT_UINT8, BASE_DEC, NULL, + 0x0, "", HFILL}}, + + { &hf_hs_cmd, + { "HyperSCSI Command", "hyperscsi.cmd", FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL}}, + }; + + static gint *ett[] = { + &ett_hyperscsi, + &ett_hs_hdr, + &ett_hs_pdu, + }; + + proto_hyperscsi = proto_register_protocol("HyperSCSI", "HyperSCSI", "hyperscsi"); + proto_register_field_array(proto_hyperscsi, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + register_dissector("hyperscsi", dissect_hyperscsi, proto_hyperscsi); +} + +#define ETHERTYPE_HYPERSCSI 0x889A + +void +proto_reg_handoff_hyperscsi(void) +{ + dissector_handle_t hs_handle; + + hs_handle = find_dissector("hyperscsi"); + dissector_add("ethertype", ETHERTYPE_HYPERSCSI, hs_handle); + +} |