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tcpdump/print-slow.c

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/*
* Copyright (c) 1998-2006 The TCPDUMP project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code
* distributions retain the above copyright notice and this paragraph
* in its entirety, and (2) distributions including binary code include
* the above copyright notice and this paragraph in its entirety in
* the documentation or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* support for the IEEE "slow protocols" LACP, MARKER as per 802.3ad
* OAM as per 802.3ah
*
* Original code by Hannes Gredler (hannes@juniper.net)
*/
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/tcpdump/print-slow.c,v 1.8 2006-10-12 05:44:33 hannes Exp $";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "interface.h"
#include "extract.h"
#include "addrtoname.h"
#include "ether.h"
#include "oui.h"
struct slow_common_header_t {
u_int8_t proto_subtype;
u_int8_t version;
};
#define SLOW_PROTO_LACP 1
#define SLOW_PROTO_MARKER 2
#define SLOW_PROTO_OAM 3
#define LACP_VERSION 1
#define MARKER_VERSION 1
static const struct tok slow_proto_values[] = {
{ SLOW_PROTO_LACP, "LACP" },
{ SLOW_PROTO_MARKER, "MARKER" },
{ SLOW_PROTO_OAM, "OAM" },
{ 0, NULL}
};
static const struct tok slow_oam_flag_values[] = {
{ 0x0001, "Link Fault" },
{ 0x0002, "Dying Gasp" },
{ 0x0004, "Critical Event" },
{ 0x0008, "Local Evaluating" },
{ 0x0010, "Local Stable" },
{ 0x0020, "Remote Evaluating" },
{ 0x0040, "Remote Stable" },
{ 0, NULL}
};
#define SLOW_OAM_CODE_INFO 0x00
#define SLOW_OAM_CODE_EVENT_NOTIF 0x01
#define SLOW_OAM_CODE_VAR_REQUEST 0x02
#define SLOW_OAM_CODE_VAR_RESPONSE 0x03
#define SLOW_OAM_CODE_LOOPBACK_CTRL 0x04
#define SLOW_OAM_CODE_PRIVATE 0xfe
static const struct tok slow_oam_code_values[] = {
{ SLOW_OAM_CODE_INFO, "Information" },
{ SLOW_OAM_CODE_EVENT_NOTIF, "Event Notification" },
{ SLOW_OAM_CODE_VAR_REQUEST, "Variable Request" },
{ SLOW_OAM_CODE_VAR_RESPONSE, "Variable Response" },
{ SLOW_OAM_CODE_LOOPBACK_CTRL, "Loopback Control" },
{ SLOW_OAM_CODE_PRIVATE, "Vendor Private" },
{ 0, NULL}
};
struct slow_oam_info_t {
u_int8_t info_type;
u_int8_t info_length;
u_int8_t oam_version;
u_int8_t revision[2];
u_int8_t state;
u_int8_t oam_config;
u_int8_t oam_pdu_config[2];
u_int8_t oui[3];
u_int8_t vendor_private[4];
};
#define SLOW_OAM_INFO_TYPE_END_OF_TLV 0x00
#define SLOW_OAM_INFO_TYPE_LOCAL 0x01
#define SLOW_OAM_INFO_TYPE_REMOTE 0x02
#define SLOW_OAM_INFO_TYPE_ORG_SPECIFIC 0xfe
static const struct tok slow_oam_info_type_values[] = {
{ SLOW_OAM_INFO_TYPE_END_OF_TLV, "End of TLV marker" },
{ SLOW_OAM_INFO_TYPE_LOCAL, "Local" },
{ SLOW_OAM_INFO_TYPE_REMOTE, "Remote" },
{ SLOW_OAM_INFO_TYPE_ORG_SPECIFIC, "Organization specific" },
{ 0, NULL}
};
#define OAM_INFO_TYPE_PARSER_MASK 0x3
static const struct tok slow_oam_info_type_state_parser_values[] = {
{ 0x00, "forwarding" },
{ 0x01, "looping back" },
{ 0x02, "discarding" },
{ 0x03, "reserved" },
{ 0, NULL}
};
#define OAM_INFO_TYPE_MUX_MASK 0x4
static const struct tok slow_oam_info_type_state_mux_values[] = {
{ 0x00, "forwarding" },
{ 0x04, "discarding" },
{ 0, NULL}
};
static const struct tok slow_oam_info_type_oam_config_values[] = {
{ 0x01, "Active" },
{ 0x02, "Unidirectional" },
{ 0x04, "Remote-Loopback" },
{ 0x08, "Link-Events" },
{ 0x10, "Variable-Retrieval" },
{ 0, NULL}
};
/* 11 Bits */
#define OAM_INFO_TYPE_PDU_SIZE_MASK 0x7ff
#define SLOW_OAM_LINK_EVENT_END_OF_TLV 0x00
#define SLOW_OAM_LINK_EVENT_ERR_SYM_PER 0x01
#define SLOW_OAM_LINK_EVENT_ERR_FRM 0x02
#define SLOW_OAM_LINK_EVENT_ERR_FRM_PER 0x03
#define SLOW_OAM_LINK_EVENT_ERR_FRM_SUMM 0x04
#define SLOW_OAM_LINK_EVENT_ORG_SPECIFIC 0xfe
static const struct tok slow_oam_link_event_values[] = {
{ SLOW_OAM_LINK_EVENT_END_OF_TLV, "End of TLV marker" },
{ SLOW_OAM_LINK_EVENT_ERR_SYM_PER, "Errored Symbol Period Event" },
{ SLOW_OAM_LINK_EVENT_ERR_FRM, "Errored Frame Event" },
{ SLOW_OAM_LINK_EVENT_ERR_FRM_PER, "Errored Frame Period Event" },
{ SLOW_OAM_LINK_EVENT_ERR_FRM_SUMM, "Errored Frame Seconds Summary Event" },
{ SLOW_OAM_LINK_EVENT_ORG_SPECIFIC, "Organization specific" },
{ 0, NULL}
};
struct slow_oam_link_event_t {
u_int8_t event_type;
u_int8_t event_length;
u_int8_t time_stamp[2];
u_int8_t window[8];
u_int8_t threshold[8];
u_int8_t errors[8];
u_int8_t errors_running_total[8];
u_int8_t event_running_total[4];
};
struct slow_oam_variablerequest_t {
u_int8_t branch;
u_int8_t leaf[2];
};
struct slow_oam_variableresponse_t {
u_int8_t branch;
u_int8_t leaf[2];
u_int8_t length;
};
struct slow_oam_loopbackctrl_t {
u_int8_t command;
};
static const struct tok slow_oam_loopbackctrl_cmd_values[] = {
{ 0x01, "Enable OAM Remote Loopback" },
{ 0x02, "Disable OAM Remote Loopback" },
{ 0, NULL}
};
struct tlv_header_t {
u_int8_t type;
u_int8_t length;
};
#define LACP_TLV_TERMINATOR 0x00
#define LACP_TLV_ACTOR_INFO 0x01
#define LACP_TLV_PARTNER_INFO 0x02
#define LACP_TLV_COLLECTOR_INFO 0x03
#define MARKER_TLV_TERMINATOR 0x00
#define MARKER_TLV_MARKER_INFO 0x01
static const struct tok slow_tlv_values[] = {
{ (SLOW_PROTO_LACP << 8) + LACP_TLV_TERMINATOR, "Terminator"},
{ (SLOW_PROTO_LACP << 8) + LACP_TLV_ACTOR_INFO, "Actor Information"},
{ (SLOW_PROTO_LACP << 8) + LACP_TLV_PARTNER_INFO, "Partner Information"},
{ (SLOW_PROTO_LACP << 8) + LACP_TLV_COLLECTOR_INFO, "Collector Information"},
{ (SLOW_PROTO_MARKER << 8) + MARKER_TLV_TERMINATOR, "Terminator"},
{ (SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO, "Marker Information"},
{ 0, NULL}
};
struct lacp_tlv_actor_partner_info_t {
u_int8_t sys_pri[2];
u_int8_t sys[ETHER_ADDR_LEN];
u_int8_t key[2];
u_int8_t port_pri[2];
u_int8_t port[2];
u_int8_t state;
u_int8_t pad[3];
};
static const struct tok lacp_tlv_actor_partner_info_state_values[] = {
{ 0x01, "Activity"},
{ 0x02, "Timeout"},
{ 0x04, "Aggregation"},
{ 0x08, "Synchronization"},
{ 0x10, "Collecting"},
{ 0x20, "Distributing"},
{ 0x40, "Default"},
{ 0x80, "Expired"},
{ 0, NULL}
};
struct lacp_tlv_collector_info_t {
u_int8_t max_delay[2];
u_int8_t pad[12];
};
struct marker_tlv_marker_info_t {
u_int8_t req_port[2];
u_int8_t req_sys[ETHER_ADDR_LEN];
u_int8_t req_trans_id[4];
u_int8_t pad[2];
};
struct lacp_marker_tlv_terminator_t {
u_int8_t pad[50];
};
void slow_marker_lacp_print(register const u_char *, register u_int);
void slow_oam_print(register const u_char *, register u_int);
const struct slow_common_header_t *slow_com_header;
void
slow_print(register const u_char *pptr, register u_int len) {
int print_version;
slow_com_header = (const struct slow_common_header_t *)pptr;
TCHECK(*slow_com_header);
/*
* Sanity checking of the header.
*/
switch (slow_com_header->proto_subtype) {
case SLOW_PROTO_LACP:
if (slow_com_header->version != LACP_VERSION) {
printf("LACP version %u packet not supported",slow_com_header->version);
return;
}
print_version = 1;
break;
case SLOW_PROTO_MARKER:
if (slow_com_header->version != MARKER_VERSION) {
printf("MARKER version %u packet not supported",slow_com_header->version);
return;
}
print_version = 1;
break;
case SLOW_PROTO_OAM: /* fall through */
print_version = 0;
break;
default:
/* print basic information and exit */
print_version = -1;
break;
}
if (print_version) {
printf("%sv%u, length %u",
tok2str(slow_proto_values, "unknown (%u)",slow_com_header->proto_subtype),
slow_com_header->version,
len);
} else {
/* some slow protos don't have a version number in the header */
printf("%s, length %u",
tok2str(slow_proto_values, "unknown (%u)",slow_com_header->proto_subtype),
len);
}
/* unrecognized subtype */
if (print_version == -1) {
print_unknown_data(pptr, "\n\t", len);
return;
}
if (!vflag)
return;
switch (slow_com_header->proto_subtype) {
default: /* should not happen */
break;
case SLOW_PROTO_OAM:
/* skip proto_subtype */
slow_oam_print(pptr+1, len-1);
break;
case SLOW_PROTO_LACP: /* LACP and MARKER share the same semantics */
case SLOW_PROTO_MARKER:
/* skip slow_common_header */
len -= sizeof(const struct slow_common_header_t);
pptr += sizeof(const struct slow_common_header_t);
slow_marker_lacp_print(pptr, len);
break;
}
return;
trunc:
printf("\n\t\t packet exceeded snapshot");
}
void slow_marker_lacp_print(register const u_char *tptr, register u_int tlen) {
const struct tlv_header_t *tlv_header;
const u_char *tlv_tptr;
u_int tlv_len, tlv_tlen;
union {
const struct lacp_marker_tlv_terminator_t *lacp_marker_tlv_terminator;
const struct lacp_tlv_actor_partner_info_t *lacp_tlv_actor_partner_info;
const struct lacp_tlv_collector_info_t *lacp_tlv_collector_info;
const struct marker_tlv_marker_info_t *marker_tlv_marker_info;
} tlv_ptr;
while(tlen>0) {
/* did we capture enough for fully decoding the tlv header ? */
TCHECK2(*tptr, sizeof(struct tlv_header_t));
tlv_header = (const struct tlv_header_t *)tptr;
tlv_len = tlv_header->length;
printf("\n\t%s TLV (0x%02x), length %u",
tok2str(slow_tlv_values,
"Unknown",
(slow_com_header->proto_subtype << 8) + tlv_header->type),
tlv_header->type,
tlv_len);
if ((tlv_len < sizeof(struct tlv_header_t) ||
tlv_len > tlen) &&
tlv_header->type != LACP_TLV_TERMINATOR &&
tlv_header->type != MARKER_TLV_TERMINATOR) {
printf("\n\t-----trailing data-----");
print_unknown_data(tptr+sizeof(sizeof(struct tlv_header_t)),"\n\t ",tlen);
return;
}
tlv_tptr=tptr+sizeof(struct tlv_header_t);
tlv_tlen=tlv_len-sizeof(struct tlv_header_t);
/* did we capture enough for fully decoding the tlv ? */
TCHECK2(*tptr, tlv_len);
switch((slow_com_header->proto_subtype << 8) + tlv_header->type) {
/* those two TLVs have the same structure -> fall through */
case ((SLOW_PROTO_LACP << 8) + LACP_TLV_ACTOR_INFO):
case ((SLOW_PROTO_LACP << 8) + LACP_TLV_PARTNER_INFO):
tlv_ptr.lacp_tlv_actor_partner_info = (const struct lacp_tlv_actor_partner_info_t *)tlv_tptr;
printf("\n\t System %s, System Priority %u, Key %u" \
", Port %u, Port Priority %u\n\t State Flags [%s]",
etheraddr_string(tlv_ptr.lacp_tlv_actor_partner_info->sys),
EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->sys_pri),
EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->key),
EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->port),
EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->port_pri),
bittok2str(lacp_tlv_actor_partner_info_state_values,
"none",
tlv_ptr.lacp_tlv_actor_partner_info->state));
break;
case ((SLOW_PROTO_LACP << 8) + LACP_TLV_COLLECTOR_INFO):
tlv_ptr.lacp_tlv_collector_info = (const struct lacp_tlv_collector_info_t *)tlv_tptr;
printf("\n\t Max Delay %u",
EXTRACT_16BITS(tlv_ptr.lacp_tlv_collector_info->max_delay));
break;
case ((SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO):
tlv_ptr.marker_tlv_marker_info = (const struct marker_tlv_marker_info_t *)tlv_tptr;
printf("\n\t Request System %s, Request Port %u, Request Transaction ID 0x%08x",
etheraddr_string(tlv_ptr.marker_tlv_marker_info->req_sys),
EXTRACT_16BITS(tlv_ptr.marker_tlv_marker_info->req_port),
EXTRACT_32BITS(tlv_ptr.marker_tlv_marker_info->req_trans_id));
break;
/* those two TLVs have the same structure -> fall through */
case ((SLOW_PROTO_LACP << 8) + LACP_TLV_TERMINATOR):
case ((SLOW_PROTO_MARKER << 8) + LACP_TLV_TERMINATOR):
tlv_ptr.lacp_marker_tlv_terminator = (const struct lacp_marker_tlv_terminator_t *)tlv_tptr;
if (tlv_len == 0) {
tlv_len = sizeof(tlv_ptr.lacp_marker_tlv_terminator->pad) +
sizeof(struct tlv_header_t);
/* tell the user that we modified the length field */
if (vflag>1)
printf(" (=%u)",tlv_len);
/* we have messed around with the length field - now we need to check
* again if there are enough bytes on the wire for the hexdump */
TCHECK2(tlv_ptr.lacp_marker_tlv_terminator->pad[0],
sizeof(tlv_ptr.lacp_marker_tlv_terminator->pad));
}
break;
default:
if (vflag <= 1)
print_unknown_data(tlv_tptr,"\n\t ",tlv_tlen);
break;
}
/* do we want to see an additional hexdump ? */
if (vflag > 1) {
print_unknown_data(tptr+sizeof(sizeof(struct tlv_header_t)),"\n\t ",
tlv_len-sizeof(struct tlv_header_t));
}
tptr+=tlv_len;
tlen-=tlv_len;
}
return;
trunc:
printf("\n\t\t packet exceeded snapshot");
}
void slow_oam_print(register const u_char *tptr, register u_int tlen) {
u_int hexdump;
struct slow_oam_common_header_t {
u_int8_t flags[2];
u_int8_t code;
};
struct slow_oam_tlv_header_t {
u_int8_t type;
u_int8_t length;
};
union {
const struct slow_oam_common_header_t *slow_oam_common_header;
const struct slow_oam_tlv_header_t *slow_oam_tlv_header;
} ptr;
union {
const struct slow_oam_info_t *slow_oam_info;
const struct slow_oam_link_event_t *slow_oam_link_event;
const struct slow_oam_variablerequest_t *slow_oam_variablerequest;
const struct slow_oam_variableresponse_t *slow_oam_variableresponse;
const struct slow_oam_loopbackctrl_t *slow_oam_loopbackctrl;
} tlv;
ptr.slow_oam_common_header = (struct slow_oam_common_header_t *)tptr;
tptr += sizeof(struct slow_oam_common_header_t);
tlen -= sizeof(struct slow_oam_common_header_t);
printf("\n\tCode %s OAM PDU, Flags [%s]",
tok2str(slow_oam_code_values, "Unknown (%u)", ptr.slow_oam_common_header->code),
bittok2str(slow_oam_flag_values,
"none",
EXTRACT_16BITS(&ptr.slow_oam_common_header->flags)));
switch (ptr.slow_oam_common_header->code) {
case SLOW_OAM_CODE_INFO:
while (tlen > 0) {
ptr.slow_oam_tlv_header = (const struct slow_oam_tlv_header_t *)tptr;
printf("\n\t %s Information Type (%u), length %u",
tok2str(slow_oam_info_type_values, "Reserved",
ptr.slow_oam_tlv_header->type),
ptr.slow_oam_tlv_header->type,
ptr.slow_oam_tlv_header->length);
hexdump = FALSE;
switch (ptr.slow_oam_tlv_header->type) {
case SLOW_OAM_INFO_TYPE_END_OF_TLV:
if (ptr.slow_oam_tlv_header->length != 0) {
printf("\n\t ERROR: illegal length - should be 0");
}
return;
case SLOW_OAM_INFO_TYPE_LOCAL: /* identical format - fall through */
case SLOW_OAM_INFO_TYPE_REMOTE:
tlv.slow_oam_info = (const struct slow_oam_info_t *)tptr;
if (tlv.slow_oam_info->info_length !=
sizeof(struct slow_oam_info_t)) {
printf("\n\t ERROR: illegal length - should be %lu",
(unsigned long) sizeof(struct slow_oam_info_t));
return;
}
printf("\n\t OAM-Version %u, Revision %u",
tlv.slow_oam_info->oam_version,
EXTRACT_16BITS(&tlv.slow_oam_info->revision));
printf("\n\t State-Parser-Action %s, State-MUX-Action %s",
tok2str(slow_oam_info_type_state_parser_values, "Reserved",
tlv.slow_oam_info->state & OAM_INFO_TYPE_PARSER_MASK),
tok2str(slow_oam_info_type_state_mux_values, "Reserved",
tlv.slow_oam_info->state & OAM_INFO_TYPE_MUX_MASK));
printf("\n\t OAM-Config Flags [%s], OAM-PDU-Config max-PDU size %u",
bittok2str(slow_oam_info_type_oam_config_values, "none",
tlv.slow_oam_info->oam_config),
EXTRACT_16BITS(&tlv.slow_oam_info->oam_pdu_config) &
OAM_INFO_TYPE_PDU_SIZE_MASK);
printf("\n\t OUI %s (0x%06x), Vendor-Private 0x%08x",
tok2str(oui_values, "Unknown",
EXTRACT_24BITS(&tlv.slow_oam_info->oui)),
EXTRACT_24BITS(&tlv.slow_oam_info->oui),
EXTRACT_32BITS(&tlv.slow_oam_info->vendor_private));
break;
case SLOW_OAM_INFO_TYPE_ORG_SPECIFIC:
hexdump = TRUE;
break;
default:
hexdump = TRUE;
break;
}
/* infinite loop check */
if (!ptr.slow_oam_tlv_header->length) {
return;
}
/* do we also want to see a hex dump ? */
if (vflag > 1 || hexdump==TRUE) {
print_unknown_data(tptr,"\n\t ",
ptr.slow_oam_tlv_header->length);
}
tlen -= ptr.slow_oam_tlv_header->length;
tptr += ptr.slow_oam_tlv_header->length;
}
break;
case SLOW_OAM_CODE_EVENT_NOTIF:
while (tlen > 0) {
ptr.slow_oam_tlv_header = (const struct slow_oam_tlv_header_t *)tptr;
printf("\n\t %s Link Event Type (%u), length %u",
tok2str(slow_oam_link_event_values, "Reserved",
ptr.slow_oam_tlv_header->type),
ptr.slow_oam_tlv_header->type,
ptr.slow_oam_tlv_header->length);
hexdump = FALSE;
switch (ptr.slow_oam_tlv_header->type) {
case SLOW_OAM_LINK_EVENT_END_OF_TLV:
if (ptr.slow_oam_tlv_header->length != 0) {
printf("\n\t ERROR: illegal length - should be 0");
}
return;
case SLOW_OAM_LINK_EVENT_ERR_SYM_PER: /* identical format - fall through */
case SLOW_OAM_LINK_EVENT_ERR_FRM:
case SLOW_OAM_LINK_EVENT_ERR_FRM_PER:
case SLOW_OAM_LINK_EVENT_ERR_FRM_SUMM:
tlv.slow_oam_link_event = (const struct slow_oam_link_event_t *)tptr;
if (tlv.slow_oam_link_event->event_length !=
sizeof(struct slow_oam_link_event_t)) {
printf("\n\t ERROR: illegal length - should be %lu",
(unsigned long) sizeof(struct slow_oam_link_event_t));
return;
}
printf("\n\t Timestamp %u ms, Errored Window %" PRIu64
"\n\t Errored Threshold %" PRIu64
"\n\t Errors %" PRIu64
"\n\t Error Running Total %" PRIu64
"\n\t Event Running Total %u",
EXTRACT_16BITS(&tlv.slow_oam_link_event->time_stamp)*100,
EXTRACT_64BITS(&tlv.slow_oam_link_event->window),
EXTRACT_64BITS(&tlv.slow_oam_link_event->threshold),
EXTRACT_64BITS(&tlv.slow_oam_link_event->errors),
EXTRACT_64BITS(&tlv.slow_oam_link_event->errors_running_total),
EXTRACT_32BITS(&tlv.slow_oam_link_event->event_running_total));
break;
case SLOW_OAM_LINK_EVENT_ORG_SPECIFIC:
hexdump = TRUE;
break;
default:
hexdump = TRUE;
break;
}
/* infinite loop check */
if (!ptr.slow_oam_tlv_header->length) {
return;
}
/* do we also want to see a hex dump ? */
if (vflag > 1 || hexdump==TRUE) {
print_unknown_data(tptr,"\n\t ",
ptr.slow_oam_tlv_header->length);
}
tlen -= ptr.slow_oam_tlv_header->length;
tptr += ptr.slow_oam_tlv_header->length;
}
break;
case SLOW_OAM_CODE_LOOPBACK_CTRL:
tlv.slow_oam_loopbackctrl = (const struct slow_oam_loopbackctrl_t *)tptr;
printf("\n\t Command %s (%u)",
tok2str(slow_oam_loopbackctrl_cmd_values,
"Unknown",
tlv.slow_oam_loopbackctrl->command),
tlv.slow_oam_loopbackctrl->command);
tptr ++;
tlen --;
break;
/*
* FIXME those are the defined codes that lack a decoder
* you are welcome to contribute code ;-)
*/
case SLOW_OAM_CODE_VAR_REQUEST:
case SLOW_OAM_CODE_VAR_RESPONSE:
case SLOW_OAM_CODE_PRIVATE:
default:
if (vflag <= 1) {
print_unknown_data(tptr,"\n\t ", tlen);
}
break;
}
return;
}
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