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wireshark/epan/dissectors/packet-ncsi.c

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/* packet-ncsi.c
* Routines for NCSI dissection
* Copyright 2017-2019, Jeremy Kerr <jk@ozlabs.org>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/*
* Network Controller Sideband Interface (NCSI) protocol support.
* Specs at http://www.dmtf.org/sites/default/files/standards/documents/DSP0222_1.0.1.pdf
*/
#include <config.h>
#include <epan/packet.h>
#include <epan/etypes.h>
void proto_reg_handoff_ncsi(void);
void proto_register_ncsi(void);
static int proto_ncsi = -1;
/* Common header fields */
static int hf_ncsi_mc_id = -1;
static int hf_ncsi_revision = -1;
static int hf_ncsi_iid = -1;
static int hf_ncsi_type = -1;
static int hf_ncsi_type_code = -1;
static int hf_ncsi_type_resp = -1;
static int hf_ncsi_chan = -1;
static int hf_ncsi_plen = -1;
/* Response generics */
static int hf_ncsi_resp = -1;
static int hf_ncsi_reason = -1;
/* Select package */
static int hf_ncsi_sp_hwarb = -1;
/* Disable channel */
static int hf_ncsi_dc_ald = -1;
/* AEN enable */
static int hf_ncsi_aene_mc = -1;
/* Set MAC Address */
static int hf_ncsi_sm_mac = -1;
static int hf_ncsi_sm_macno = -1;
static int hf_ncsi_sm_at = -1;
static int hf_ncsi_sm_e = -1;
/* Broadcast filter */
static int hf_ncsi_bf = -1;
static int hf_ncsi_bf_arp = -1;
static int hf_ncsi_bf_dhcpc = -1;
static int hf_ncsi_bf_dhcps = -1;
static int hf_ncsi_bf_netbios = -1;
/* AEN payload fields */
static int hf_ncsi_aen_type = -1;
static int hf_ncsi_aen_lsc_stat = -1;
static int hf_ncsi_aen_lsc_oemstat = -1;
static int hf_ncsi_aen_lsc_hcstat = -1;
/* generic link status */
static int hf_ncsi_lstat = -1;
static int hf_ncsi_lstat_flag = -1;
static int hf_ncsi_lstat_speed_duplex = -1;
static int hf_ncsi_lstat_autoneg = -1;
static int hf_ncsi_lstat_autoneg_complete = -1;
static int hf_ncsi_lstat_parallel_detection = -1;
static int hf_ncsi_lstat_1000TFD = -1;
static int hf_ncsi_lstat_1000THD = -1;
static int hf_ncsi_lstat_100T4 = -1;
static int hf_ncsi_lstat_100TXFD = -1;
static int hf_ncsi_lstat_100TXHD = -1;
static int hf_ncsi_lstat_10TFD = -1;
static int hf_ncsi_lstat_10THD = -1;
static int hf_ncsi_lstat_tx_flow = -1;
static int hf_ncsi_lstat_rx_flow = -1;
static int hf_ncsi_lstat_partner_flow = -1;
static int hf_ncsi_lstat_serdes = -1;
static int hf_ncsi_lstat_oem_speed_valid = -1;
static gint ett_ncsi = -1;
static gint ett_ncsi_type = -1;
static gint ett_ncsi_payload = -1;
static gint ett_ncsi_lstat = -1;
#define NCSI_MIN_LENGTH 8
enum ncsi_type {
NCSI_TYPE_GLS = 0x0a,
NCSI_TYPE_AEN = 0x7f,
};
static const value_string ncsi_type_vals[] = {
{ 0x00, "Clear initial state" },
{ 0x01, "Select package" },
{ 0x02, "Deselect package" },
{ 0x03, "Enable channel" },
{ 0x04, "Disable channel" },
{ 0x05, "Reset channel" },
{ 0x06, "Enable channel TX" },
{ 0x07, "Disable channel TX" },
{ 0x08, "AEN enable" },
{ NCSI_TYPE_GLS, "Get link status" },
{ 0x0d, "Disable VLAN" },
{ 0x0e, "Set MAC address" },
{ 0x10, "Enable broadcast filter" },
{ 0x11, "Disable broadcast filter" },
{ NCSI_TYPE_AEN, "Async Event Notification" },
{ 0, NULL },
};
static const value_string ncsi_type_resp_vals[] = {
{ 0x00, "request" },
{ 0x01, "response" },
{ 0, NULL },
};
static const value_string ncsi_aen_type_vals[] = {
{ 0x00, "Link status change" },
{ 0x01, "Configuration required" },
{ 0x02, "Host NC driver status change" },
{ 0, NULL },
};
static const value_string ncsi_lstat_flag_vals[] = {
{ 0x00, "Link down" },
{ 0x01, "Link up" },
{ 0, NULL },
};
static const value_string ncsi_lstat_speed_duplex_vals[] = {
{ 0x00, "Auto-negotiate not complete" },
{ 0x01, "10BaseT half duplex" },
{ 0x02, "10BaseT full duplex" },
{ 0x03, "100BaseT half duplex" },
{ 0x04, "100BaseT4" },
{ 0x05, "100BaseTX full duplex" },
{ 0x06, "1000BaseT half duplex" },
{ 0x07, "1000BaseT full duplex" },
{ 0x08, "10GBaseT support" },
{ 0, NULL },
};
static const value_string ncsi_enable_vals[] = {
{ 0x00, "disabled" },
{ 0x01, "enabled" },
{ 0, NULL },
};
static const value_string ncsi_valid_vals[] = {
{ 0x00, "invalid" },
{ 0x01, "valid" },
{ 0, NULL },
};
static const value_string ncsi_autoneg_complete_vals[] = {
{ 0x00, "disabled/in-progress" },
{ 0x01, "complete" },
{ 0, NULL },
};
static const value_string ncsi_partner_flow_vals[] = {
{ 0x00, "Not pause capable" },
{ 0x01, "Symmetric pause" },
{ 0x02, "Assymmetric pause" },
{ 0x03, "Symmetric & Assymetric pause" },
{ 0, NULL },
};
static const value_string ncsi_used_vals[] = {
{ 0x00, "unused" },
{ 0x01, "used" },
{ 0, NULL },
};
static const value_string ncsi_capable_vals[] = {
{ 0x00, "not capable" },
{ 0x01, "capable" },
{ 0, NULL },
};
static const value_string ncsi_aen_hcstat_vals[] = {
{ 0x00, "not running" },
{ 0x01, "running" },
{ 0, NULL },
};
static const value_string ncsi_sm_at_vals[] = {
{ 0x00, "unicast" },
{ 0x01, "multicast" },
{ 0, NULL },
};
static const value_string ncsi_bf_filter_vals[] = {
{ 0x00, "drop" },
{ 0x01, "forward" },
{ 0, NULL },
};
static void
ncsi_proto_tree_add_lstat(tvbuff_t *tvb, proto_tree *tree, int offset)
{
static int * const lstat_fields[] = {
&hf_ncsi_lstat_flag,
&hf_ncsi_lstat_speed_duplex,
&hf_ncsi_lstat_autoneg,
&hf_ncsi_lstat_autoneg_complete,
&hf_ncsi_lstat_parallel_detection,
&hf_ncsi_lstat_1000TFD,
&hf_ncsi_lstat_1000THD,
&hf_ncsi_lstat_100T4,
&hf_ncsi_lstat_100TXFD,
&hf_ncsi_lstat_100TXHD,
&hf_ncsi_lstat_10TFD,
&hf_ncsi_lstat_10THD,
&hf_ncsi_lstat_tx_flow,
&hf_ncsi_lstat_rx_flow,
&hf_ncsi_lstat_partner_flow,
&hf_ncsi_lstat_serdes,
&hf_ncsi_lstat_oem_speed_valid,
NULL,
};
proto_tree_add_bitmask_with_flags(tree, tvb, offset, hf_ncsi_lstat,
ett_ncsi_lstat, lstat_fields, ENC_BIG_ENDIAN, BMT_NO_APPEND);
}
static void
dissect_ncsi_aen(tvbuff_t *tvb, proto_tree *tree)
{
guint8 type = tvb_get_guint8(tvb, 19);
proto_tree_add_item(tree, hf_ncsi_aen_type, tvb, 19, 1, ENC_NA);
switch (type) {
case 0x00:
ncsi_proto_tree_add_lstat(tvb, tree, 20);
proto_tree_add_item(tree, hf_ncsi_aen_lsc_oemstat, tvb, 24, 4, ENC_NA);
break;
case 0x02:
proto_tree_add_item(tree, hf_ncsi_aen_lsc_hcstat, tvb, 20, 4, ENC_NA);
break;
}
}
/* Code to actually dissect the packets */
static int
dissect_ncsi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
void *data _U_)
{
proto_tree *ncsi_tree, *ncsi_payload_tree;
proto_item *ti, *pti;
guint8 type, plen;
static int * const type_fields[] = {
&hf_ncsi_type_code,
&hf_ncsi_type_resp,
NULL,
};
/* Check that the packet is long enough for it to belong to us. */
if (tvb_reported_length(tvb) < NCSI_MIN_LENGTH)
return 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "NCSI");
type = tvb_get_guint8(tvb, 4);
plen = tvb_get_guint8(tvb, 7);
col_clear(pinfo->cinfo, COL_INFO);
if (type == 0xff) {
col_add_fstr(pinfo->cinfo, COL_INFO,
"Async Event Notification, chan %x",
tvb_get_guint8(tvb, 5));
} else {
col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s, id %x, chan %x",
val_to_str(type & 0x7f, ncsi_type_vals, "Unknown type %x"),
type & 0x80 ? "response" : "request ",
tvb_get_guint8(tvb, 3),
tvb_get_guint8(tvb, 5));
}
/* Top-level NCSI protocol item & tree */
ti = proto_tree_add_item(tree, proto_ncsi, tvb, 0, -1, ENC_NA);
ncsi_tree = proto_item_add_subtree(ti, ett_ncsi);
/* Standard header fields */
proto_tree_add_item(ncsi_tree, hf_ncsi_mc_id, tvb, 0, 1, ENC_NA);
proto_tree_add_item(ncsi_tree, hf_ncsi_revision, tvb, 1, 1, ENC_NA);
proto_tree_add_item(ncsi_tree, hf_ncsi_iid, tvb, 3, 1, ENC_NA);
proto_tree_add_bitmask(ncsi_tree, tvb, 4, hf_ncsi_type,
ett_ncsi_type, type_fields, ENC_NA);
proto_tree_add_item(ncsi_tree, hf_ncsi_chan, tvb, 5, 1, ENC_NA);
proto_tree_add_item(ncsi_tree, hf_ncsi_plen, tvb, 7, 1, ENC_NA);
if (!plen)
return 16;
/* Payload tree */
ncsi_payload_tree = proto_tree_add_subtree(ncsi_tree, tvb, 16,
plen, ett_ncsi_payload, &pti, "Payload");
/* All responses start with response code & reason data */
if (type & 0x80) {
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_resp, tvb,
16, 2, ENC_NA);
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_reason, tvb,
18, 2, ENC_NA);
}
switch (type) {
case 0x01:
proto_item_set_text(pti, "Select package request");
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_sp_hwarb, tvb,
19, 1, ENC_NA);
break;
case 0x04:
proto_item_set_text(pti, "Disable channel request");
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_dc_ald, tvb,
19, 1, ENC_NA);
break;
case 0x08:
proto_item_set_text(pti, "AEN enable request");
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_aene_mc, tvb,
19, 1, ENC_NA);
break;
case 0x0e:
proto_item_set_text(pti, "Set MAC address request");
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_sm_mac, tvb,
16, 6, ENC_NA);
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_sm_macno, tvb,
22, 1, ENC_NA);
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_sm_at, tvb,
23, 1, ENC_NA);
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_sm_e, tvb,
23, 1, ENC_NA);
break;
case 0x10:
proto_item_set_text(pti, "Enable broadcast filter request");
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_bf, tvb,
16, 4, ENC_NA);
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_bf_arp, tvb,
16, 4, ENC_NA);
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_bf_dhcpc, tvb,
16, 4, ENC_NA);
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_bf_dhcps, tvb,
16, 4, ENC_NA);
proto_tree_add_item(ncsi_payload_tree, hf_ncsi_bf_netbios, tvb,
16, 4, ENC_NA);
break;
case NCSI_TYPE_GLS | 0x80:
proto_item_set_text(pti, "Get Link Status response");
ncsi_proto_tree_add_lstat(tvb, ncsi_payload_tree, 20);
break;
case NCSI_TYPE_AEN | 0x80:
proto_item_set_text(pti, "AEN payload");
dissect_ncsi_aen(tvb, ncsi_payload_tree);
break;
}
return tvb_captured_length(tvb);
}
void
proto_register_ncsi(void)
{
/* Field definitions */
static hf_register_info hf[] = {
{ &hf_ncsi_mc_id,
{ "MC ID", "ncsi.mc_id",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Management controller ID", HFILL },
},
{ &hf_ncsi_revision,
{ "Revision", "ncsi.revision",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Header revision", HFILL },
},
{ &hf_ncsi_iid,
{ "IID", "ncsi.iid",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Instance ID", HFILL },
},
{ &hf_ncsi_type,
{ "Type", "ncsi.type",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Packet type", HFILL },
},
{ &hf_ncsi_type_code,
{ "Type code", "ncsi.type.code",
FT_UINT8, BASE_HEX, VALS(ncsi_type_vals), 0x7f,
"Packet type code", HFILL },
},
{ &hf_ncsi_type_resp,
{ "Type req/resp", "ncsi.type.resp",
FT_UINT8, BASE_HEX, VALS(ncsi_type_resp_vals), 0x80,
"Packet type request/response", HFILL },
},
{ &hf_ncsi_chan,
{ "Channel", "ncsi.chan",
FT_UINT8, BASE_HEX, NULL, 0x0,
"NCSI Channel", HFILL },
},
{ &hf_ncsi_plen,
{ "Payload Length", "ncsi.plen",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL },
},
{ &hf_ncsi_resp,
{ "Response", "ncsi.resp",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Response code", HFILL },
},
{ &hf_ncsi_reason,
{ "Reason", "ncsi.reason",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Reason code", HFILL },
},
{ &hf_ncsi_sp_hwarb,
{ "Hardware arbitration disable", "ncsi.sp.hwarb",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL },
},
{ &hf_ncsi_dc_ald,
{ "Allow link down", "ncsi.dc.ald",
FT_UINT8, BASE_HEX, NULL, 0x1,
NULL, HFILL },
},
{ &hf_ncsi_aene_mc,
{ "Management controller ID", "ncsi.aene.mc",
FT_UINT8, BASE_HEX, NULL, 0x1,
NULL, HFILL },
},
{ &hf_ncsi_sm_mac,
{ "MAC address", "ncsi.sm.mac",
FT_ETHER, BASE_NONE, NULL, 0,
NULL, HFILL },
},
{ &hf_ncsi_sm_macno,
{ "MAC address number", "ncsi.sm.macno",
FT_UINT8, BASE_HEX, NULL, 0,
NULL, HFILL },
},
{ &hf_ncsi_sm_at,
{ "Address type", "ncsi.sm.at",
FT_UINT8, BASE_HEX, VALS(ncsi_sm_at_vals), 0xe0,
NULL, HFILL },
},
{ &hf_ncsi_sm_e,
{ "Enabled", "ncsi.sm.e",
FT_UINT8, BASE_HEX, VALS(ncsi_enable_vals), 0x1,
NULL, HFILL },
},
{ &hf_ncsi_aen_type,
{ "AEN type", "ncsi.aen_type",
FT_UINT8, BASE_HEX, VALS(ncsi_aen_type_vals), 0xff,
NULL, HFILL },
},
{ &hf_ncsi_aen_lsc_stat,
{ "AEN link status", "ncsi.aen_lsc_stat",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL },
},
{ &hf_ncsi_aen_lsc_oemstat,
{ "AEN link OEM status", "ncsi.aen_lsc_oemstat",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL },
},
{ &hf_ncsi_aen_lsc_hcstat,
{ "AEN link HC status", "ncsi.aen_lsc_hcstat",
FT_UINT8, BASE_HEX, VALS(ncsi_aen_hcstat_vals), 0x0,
"AEN link host controller status", HFILL },
},
/* Broadcast filter */
{ &hf_ncsi_bf,
{ "Broadcast filter settings", "ncsi.bf.settings",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL },
},
{ &hf_ncsi_bf_arp,
{ "ARP", "ncsi.bf.settings.arp",
FT_UINT32, BASE_HEX, VALS(ncsi_bf_filter_vals), 1 << 0,
NULL, HFILL },
},
{ &hf_ncsi_bf_dhcpc,
{ "DHCP Client", "ncsi.bf.settings.dhcpc",
FT_UINT32, BASE_HEX, VALS(ncsi_bf_filter_vals), 1 << 1,
NULL, HFILL },
},
{ &hf_ncsi_bf_dhcps,
{ "DHCP Server", "ncsi.bf.settings.dhcps",
FT_UINT32, BASE_HEX, VALS(ncsi_bf_filter_vals), 1 << 2,
NULL, HFILL },
},
{ &hf_ncsi_bf_netbios,
{ "NetBIOS", "ncsi.bf.settings.netbios",
FT_UINT32, BASE_HEX, VALS(ncsi_bf_filter_vals), 1 << 3,
NULL, HFILL },
},
/* generic link status */
{ &hf_ncsi_lstat,
{ "Link status", "ncsi.lstat",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL },
},
{ &hf_ncsi_lstat_flag,
{ "Link flag", "ncsi.lstat.flag",
FT_UINT32, BASE_HEX, VALS(ncsi_lstat_flag_vals), 0x1,
NULL, HFILL },
},
{ &hf_ncsi_lstat_speed_duplex,
{ "Speed & duplex", "ncsi.lstat.speed_duplex",
FT_UINT32, BASE_HEX, VALS(ncsi_lstat_speed_duplex_vals), 0x1e,
NULL, HFILL },
},
{ &hf_ncsi_lstat_autoneg,
{ "Autonegotiation", "ncsi.lstat.autoneg",
FT_UINT32, BASE_HEX, VALS(ncsi_enable_vals), 1<<5,
NULL, HFILL },
},
{ &hf_ncsi_lstat_autoneg_complete,
{ "Autonegotiation complete", "ncsi.lstat.autoneg_complete",
FT_UINT32, BASE_HEX, VALS(ncsi_autoneg_complete_vals), 1<<6,
NULL, HFILL },
},
{ &hf_ncsi_lstat_parallel_detection,
{ "Parallel detection", "ncsi.lstat.parallel_detection",
FT_UINT32, BASE_HEX, VALS(ncsi_used_vals), 1<<7,
NULL, HFILL },
},
{ &hf_ncsi_lstat_1000TFD,
{ "1000TFD", "ncsi.lstat.1000tfd",
FT_UINT32, BASE_HEX, VALS(ncsi_capable_vals), 1<<9,
"Partner advertised 1000TFD", HFILL },
},
{ &hf_ncsi_lstat_1000THD,
{ "1000THD", "ncsi.lstat.1000thd",
FT_UINT32, BASE_HEX, VALS(ncsi_capable_vals), 1<<10,
"Partner advertised 1000THD", HFILL },
},
{ &hf_ncsi_lstat_100T4,
{ "100T4", "ncsi.lstat.100t4",
FT_UINT32, BASE_HEX, VALS(ncsi_capable_vals), 1<<11,
"Partner advertised 100T4", HFILL },
},
{ &hf_ncsi_lstat_100TXFD,
{ "100TXFD", "ncsi.lstat.100txfd",
FT_UINT32, BASE_HEX, VALS(ncsi_capable_vals), 1<<12,
"Partner advertised 100TXFD", HFILL },
},
{ &hf_ncsi_lstat_100TXHD,
{ "100TXHD", "ncsi.lstat.100txhd",
FT_UINT32, BASE_HEX, VALS(ncsi_capable_vals), 1<<13,
"Partner advertised 100TXHD", HFILL },
},
{ &hf_ncsi_lstat_10TFD,
{ "10TFD", "ncsi.lstat.10tfd",
FT_UINT32, BASE_HEX, VALS(ncsi_capable_vals), 1<<14,
"Partner advertised 10TFD", HFILL },
},
{ &hf_ncsi_lstat_10THD,
{ "10THD", "ncsi.lstat.10thd",
FT_UINT32, BASE_HEX, VALS(ncsi_capable_vals), 1<<15,
"Partner advertised 10THD", HFILL },
},
{ &hf_ncsi_lstat_tx_flow,
{ "TX flow", "ncsi.lstat.tx_flow",
FT_UINT32, BASE_HEX, VALS(ncsi_enable_vals), 1<<16,
"TX flow control", HFILL },
},
{ &hf_ncsi_lstat_rx_flow,
{ "RX flow", "ncsi.lstat.rx_flow",
FT_UINT32, BASE_HEX, VALS(ncsi_enable_vals), 1<<17,
"RX flow control", HFILL },
},
{ &hf_ncsi_lstat_partner_flow,
{ "Partner flow", "ncsi.lstat.partner_flow",
FT_UINT32, BASE_HEX, VALS(ncsi_partner_flow_vals), 3<<18,
"Partner-advertised flow control", HFILL },
},
{ &hf_ncsi_lstat_serdes,
{ "SerDes", "ncsi.lstat.serdes",
FT_UINT32, BASE_HEX, VALS(ncsi_used_vals), 1<<20,
NULL, HFILL },
},
{ &hf_ncsi_lstat_oem_speed_valid,
{ "OEM Speed", "ncsi.lstat.oem_speed_valid",
FT_UINT32, BASE_HEX, VALS(ncsi_valid_vals), 1<<21,
NULL, HFILL },
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_ncsi,
&ett_ncsi_type,
&ett_ncsi_payload,
&ett_ncsi_lstat,
};
/* Register the protocol name and description */
proto_ncsi = proto_register_protocol("NCSI", "NCSI", "ncsi");
/* Required function calls to register the header fields and subtrees */
proto_register_field_array(proto_ncsi, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_ncsi(void)
{
dissector_handle_t ncsi_handle;
ncsi_handle = create_dissector_handle(dissect_ncsi, proto_ncsi);
dissector_add_uint("ethertype", ETHERTYPE_NCSI, ncsi_handle);
}
/*
* 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:
*/
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