Release 4.12 include/uapi/linux/netfilter/xt_osf.h
/*
* Copyright (c) 2003+ Evgeniy Polyakov <johnpol@2ka.mxt.ru>
*
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _XT_OSF_H
#define _XT_OSF_H
#include <linux/types.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#define MAXGENRELEN 32
#define XT_OSF_GENRE (1<<0)
#define XT_OSF_TTL (1<<1)
#define XT_OSF_LOG (1<<2)
#define XT_OSF_INVERT (1<<3)
#define XT_OSF_LOGLEVEL_ALL 0
/* log all matched fingerprints */
#define XT_OSF_LOGLEVEL_FIRST 1
/* log only the first matced fingerprint */
#define XT_OSF_LOGLEVEL_ALL_KNOWN 2
/* do not log unknown packets */
#define XT_OSF_TTL_TRUE 0
/* True ip and fingerprint TTL comparison */
#define XT_OSF_TTL_LESS 1
/* Check if ip TTL is less than fingerprint one */
#define XT_OSF_TTL_NOCHECK 2
/* Do not compare ip and fingerprint TTL at all */
struct xt_osf_info {
char genre[MAXGENRELEN];
__u32 len;
__u32 flags;
__u32 loglevel;
__u32 ttl;
};
/*
* Wildcard MSS (kind of).
* It is used to implement a state machine for the different wildcard values
* of the MSS and window sizes.
*/
struct xt_osf_wc {
__u32 wc;
__u32 val;
};
/*
* This struct represents IANA options
* http://www.iana.org/assignments/tcp-parameters
*/
struct xt_osf_opt {
__u16 kind, length;
struct xt_osf_wc wc;
};
struct xt_osf_user_finger {
struct xt_osf_wc wss;
__u8 ttl, df;
__u16 ss, mss;
__u16 opt_num;
char genre[MAXGENRELEN];
char version[MAXGENRELEN];
char subtype[MAXGENRELEN];
/* MAX_IPOPTLEN is maximum if all options are NOPs or EOLs */
struct xt_osf_opt opt[MAX_IPOPTLEN];
};
struct xt_osf_nlmsg {
struct xt_osf_user_finger f;
struct iphdr ip;
struct tcphdr tcp;
};
/* Defines for IANA option kinds */
enum iana_options {
OSFOPT_EOL = 0, /* End of options */
OSFOPT_NOP, /* NOP */
OSFOPT_MSS, /* Maximum segment size */
OSFOPT_WSO, /* Window scale option */
OSFOPT_SACKP, /* SACK permitted */
OSFOPT_SACK, /* SACK */
OSFOPT_ECHO,
OSFOPT_ECHOREPLY,
OSFOPT_TS, /* Timestamp option */
OSFOPT_POCP, /* Partial Order Connection Permitted */
OSFOPT_POSP, /* Partial Order Service Profile */
/* Others are not used in the current OSF */
OSFOPT_EMPTY = 255,
};
/*
* Initial window size option state machine: multiple of mss, mtu or
* plain numeric value. Can also be made as plain numeric value which
* is not a multiple of specified value.
*/
enum xt_osf_window_size_options {
OSF_WSS_PLAIN = 0,
OSF_WSS_MSS,
OSF_WSS_MTU,
OSF_WSS_MODULO,
OSF_WSS_MAX,
};
/*
* Add/remove fingerprint from the kernel.
*/
enum xt_osf_msg_types {
OSF_MSG_ADD,
OSF_MSG_REMOVE,
OSF_MSG_MAX,
};
enum xt_osf_attr_type {
OSF_ATTR_UNSPEC,
OSF_ATTR_FINGER,
OSF_ATTR_MAX,
};
#endif /* _XT_OSF_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Evgeniy Polyakov | 255 | 96.23% | 1 | 25.00% |
| Mikko Rapeli | 6 | 2.26% | 1 | 25.00% |
| Jaswinder Singh Rajput | 3 | 1.13% | 1 | 25.00% |
| Jeff Kirsher | 1 | 0.38% | 1 | 25.00% |
| Total | 265 | 100.00% | 4 | 100.00% |
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