[mirror_ubuntu-bionic-kernel.git] / include / uapi / linux / netfilter_ipv4 / ip_tables.h

/*
 * 25-Jul-1998 Major changes to allow for ip chain table
 *
 * 3-Jan-2000 Named tables to allow packet selection for different uses.
 */

/*
 * 	Format of an IP firewall descriptor
 *
 * 	src, dst, src_mask, dst_mask are always stored in network byte order.
 * 	flags are stored in host byte order (of course).
 * 	Port numbers are stored in HOST byte order.
 */

#ifndef _UAPI_IPTABLES_H
#define _UAPI_IPTABLES_H

#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/netfilter_ipv4.h>

#include <linux/netfilter/x_tables.h>

#ifndef __KERNEL__
#define IPT_FUNCTION_MAXNAMELEN XT_FUNCTION_MAXNAMELEN
#define IPT_TABLE_MAXNAMELEN XT_TABLE_MAXNAMELEN
#define ipt_match xt_match
#define ipt_target xt_target
#define ipt_table xt_table
#define ipt_get_revision xt_get_revision
#define ipt_entry_match xt_entry_match
#define ipt_entry_target xt_entry_target
#define ipt_standard_target xt_standard_target
#define ipt_error_target xt_error_target
#define ipt_counters xt_counters
#define IPT_CONTINUE XT_CONTINUE
#define IPT_RETURN XT_RETURN

/* This group is older than old (iptables < v1.4.0-rc1~89) */
#include <linux/netfilter/xt_tcpudp.h>
#define ipt_udp xt_udp
#define ipt_tcp xt_tcp
#define IPT_TCP_INV_SRCPT	XT_TCP_INV_SRCPT
#define IPT_TCP_INV_DSTPT	XT_TCP_INV_DSTPT
#define IPT_TCP_INV_FLAGS	XT_TCP_INV_FLAGS
#define IPT_TCP_INV_OPTION	XT_TCP_INV_OPTION
#define IPT_TCP_INV_MASK	XT_TCP_INV_MASK
#define IPT_UDP_INV_SRCPT	XT_UDP_INV_SRCPT
#define IPT_UDP_INV_DSTPT	XT_UDP_INV_DSTPT
#define IPT_UDP_INV_MASK	XT_UDP_INV_MASK

/* The argument to IPT_SO_ADD_COUNTERS. */
#define ipt_counters_info xt_counters_info
/* Standard return verdict, or do jump. */
#define IPT_STANDARD_TARGET XT_STANDARD_TARGET
/* Error verdict. */
#define IPT_ERROR_TARGET XT_ERROR_TARGET

/* fn returns 0 to continue iteration */
#define IPT_MATCH_ITERATE(e, fn, args...) \
	XT_MATCH_ITERATE(struct ipt_entry, e, fn, ## args)

/* fn returns 0 to continue iteration */
#define IPT_ENTRY_ITERATE(entries, size, fn, args...) \
	XT_ENTRY_ITERATE(struct ipt_entry, entries, size, fn, ## args)
#endif

/* Yes, Virginia, you have to zero the padding. */
struct ipt_ip {
	/* Source and destination IP addr */
	struct in_addr src, dst;
	/* Mask for src and dest IP addr */
	struct in_addr smsk, dmsk;
	char iniface[IFNAMSIZ], outiface[IFNAMSIZ];
	unsigned char iniface_mask[IFNAMSIZ], outiface_mask[IFNAMSIZ];

	/* Protocol, 0 = ANY */
	__u16 proto;

	/* Flags word */
	__u8 flags;
	/* Inverse flags */
	__u8 invflags;
};

/* Values for "flag" field in struct ipt_ip (general ip structure). */
#define IPT_F_FRAG		0x01	/* Set if rule is a fragment rule */
#define IPT_F_GOTO		0x02	/* Set if jump is a goto */
#define IPT_F_MASK		0x03	/* All possible flag bits mask. */

/* Values for "inv" field in struct ipt_ip. */
#define IPT_INV_VIA_IN		0x01	/* Invert the sense of IN IFACE. */
#define IPT_INV_VIA_OUT		0x02	/* Invert the sense of OUT IFACE */
#define IPT_INV_TOS		0x04	/* Invert the sense of TOS. */
#define IPT_INV_SRCIP		0x08	/* Invert the sense of SRC IP. */
#define IPT_INV_DSTIP		0x10	/* Invert the sense of DST OP. */
#define IPT_INV_FRAG		0x20	/* Invert the sense of FRAG. */
#define IPT_INV_PROTO		XT_INV_PROTO
#define IPT_INV_MASK		0x7F	/* All possible flag bits mask. */

/* This structure defines each of the firewall rules.  Consists of 3
   parts which are 1) general IP header stuff 2) match specific
   stuff 3) the target to perform if the rule matches */
struct ipt_entry {
	struct ipt_ip ip;

	/* Mark with fields that we care about. */
	unsigned int nfcache;

	/* Size of ipt_entry + matches */
	__u16 target_offset;
	/* Size of ipt_entry + matches + target */
	__u16 next_offset;

	/* Back pointer */
	unsigned int comefrom;

	/* Packet and byte counters. */
	struct xt_counters counters;

	/* The matches (if any), then the target. */
	unsigned char elems[0];
};

/*
 * New IP firewall options for [gs]etsockopt at the RAW IP level.
 * Unlike BSD Linux inherits IP options so you don't have to use a raw
 * socket for this. Instead we check rights in the calls.
 *
 * ATTENTION: check linux/in.h before adding new number here.
 */
#define IPT_BASE_CTL		64

#define IPT_SO_SET_REPLACE	(IPT_BASE_CTL)
#define IPT_SO_SET_ADD_COUNTERS	(IPT_BASE_CTL + 1)
#define IPT_SO_SET_MAX		IPT_SO_SET_ADD_COUNTERS

#define IPT_SO_GET_INFO			(IPT_BASE_CTL)
#define IPT_SO_GET_ENTRIES		(IPT_BASE_CTL + 1)
#define IPT_SO_GET_REVISION_MATCH	(IPT_BASE_CTL + 2)
#define IPT_SO_GET_REVISION_TARGET	(IPT_BASE_CTL + 3)
#define IPT_SO_GET_MAX			IPT_SO_GET_REVISION_TARGET

/* ICMP matching stuff */
struct ipt_icmp {
	__u8 type;				/* type to match */
	__u8 code[2];				/* range of code */
	__u8 invflags;				/* Inverse flags */
};

/* Values for "inv" field for struct ipt_icmp. */
#define IPT_ICMP_INV	0x01	/* Invert the sense of type/code test */

/* The argument to IPT_SO_GET_INFO */
struct ipt_getinfo {
	/* Which table: caller fills this in. */
	char name[XT_TABLE_MAXNAMELEN];

	/* Kernel fills these in. */
	/* Which hook entry points are valid: bitmask */
	unsigned int valid_hooks;

	/* Hook entry points: one per netfilter hook. */
	unsigned int hook_entry[NF_INET_NUMHOOKS];

	/* Underflow points. */
	unsigned int underflow[NF_INET_NUMHOOKS];

	/* Number of entries */
	unsigned int num_entries;

	/* Size of entries. */
	unsigned int size;
};

/* The argument to IPT_SO_SET_REPLACE. */
struct ipt_replace {
	/* Which table. */
	char name[XT_TABLE_MAXNAMELEN];

	/* Which hook entry points are valid: bitmask.  You can't
           change this. */
	unsigned int valid_hooks;

	/* Number of entries */
	unsigned int num_entries;

	/* Total size of new entries */
	unsigned int size;

	/* Hook entry points. */
	unsigned int hook_entry[NF_INET_NUMHOOKS];

	/* Underflow points. */
	unsigned int underflow[NF_INET_NUMHOOKS];

	/* Information about old entries: */
	/* Number of counters (must be equal to current number of entries). */
	unsigned int num_counters;
	/* The old entries' counters. */
	struct xt_counters __user *counters;

	/* The entries (hang off end: not really an array). */
	struct ipt_entry entries[0];
};

/* The argument to IPT_SO_GET_ENTRIES. */
struct ipt_get_entries {
	/* Which table: user fills this in. */
	char name[XT_TABLE_MAXNAMELEN];

	/* User fills this in: total entry size. */
	unsigned int size;

	/* The entries. */
	struct ipt_entry entrytable[0];
};

/* Helper functions */
static __inline__ struct xt_entry_target *
ipt_get_target(struct ipt_entry *e)
{
	return (void *)e + e->target_offset;
}

/*
 *	Main firewall chains definitions and global var's definitions.
 */
#endif /* _UAPI_IPTABLES_H */
Commit	Line	Data
17c07592 DH	1	/*
	2	* 25-Jul-1998 Major changes to allow for ip chain table
	3	*
	4	* 3-Jan-2000 Named tables to allow packet selection for different uses.
	5	*/
	6
	7	/*
	8	* Format of an IP firewall descriptor
	9	*
	10	* src, dst, src_mask, dst_mask are always stored in network byte order.
	11	* flags are stored in host byte order (of course).
	12	* Port numbers are stored in HOST byte order.
	13	*/
	14
	15	#ifndef _UAPI_IPTABLES_H
	16	#define _UAPI_IPTABLES_H
	17
	18	#include <linux/types.h>
	19	#include <linux/compiler.h>
	20	#include <linux/netfilter_ipv4.h>
	21
	22	#include <linux/netfilter/x_tables.h>
	23
	24	#ifndef __KERNEL__
	25	#define IPT_FUNCTION_MAXNAMELEN XT_FUNCTION_MAXNAMELEN
	26	#define IPT_TABLE_MAXNAMELEN XT_TABLE_MAXNAMELEN
	27	#define ipt_match xt_match
	28	#define ipt_target xt_target
	29	#define ipt_table xt_table
	30	#define ipt_get_revision xt_get_revision
	31	#define ipt_entry_match xt_entry_match
	32	#define ipt_entry_target xt_entry_target
	33	#define ipt_standard_target xt_standard_target
	34	#define ipt_error_target xt_error_target
	35	#define ipt_counters xt_counters
	36	#define IPT_CONTINUE XT_CONTINUE
	37	#define IPT_RETURN XT_RETURN
	38
	39	/* This group is older than old (iptables < v1.4.0-rc1~89) */
	40	#include <linux/netfilter/xt_tcpudp.h>
	41	#define ipt_udp xt_udp
	42	#define ipt_tcp xt_tcp
	43	#define IPT_TCP_INV_SRCPT XT_TCP_INV_SRCPT
	44	#define IPT_TCP_INV_DSTPT XT_TCP_INV_DSTPT
	45	#define IPT_TCP_INV_FLAGS XT_TCP_INV_FLAGS
	46	#define IPT_TCP_INV_OPTION XT_TCP_INV_OPTION
	47	#define IPT_TCP_INV_MASK XT_TCP_INV_MASK
	48	#define IPT_UDP_INV_SRCPT XT_UDP_INV_SRCPT
	49	#define IPT_UDP_INV_DSTPT XT_UDP_INV_DSTPT
	50	#define IPT_UDP_INV_MASK XT_UDP_INV_MASK
	51
	52	/* The argument to IPT_SO_ADD_COUNTERS. */
	53	#define ipt_counters_info xt_counters_info
	54	/* Standard return verdict, or do jump. */
	55	#define IPT_STANDARD_TARGET XT_STANDARD_TARGET
	56	/* Error verdict. */
	57	#define IPT_ERROR_TARGET XT_ERROR_TARGET
	58
	59	/* fn returns 0 to continue iteration */
	60	#define IPT_MATCH_ITERATE(e, fn, args...) \
	61	XT_MATCH_ITERATE(struct ipt_entry, e, fn, ## args)
	62
	63	/* fn returns 0 to continue iteration */
	64	#define IPT_ENTRY_ITERATE(entries, size, fn, args...) \
65	XT_ENTRY_ITERATE(struct ipt_entry, entries, size, fn, ## args)
66	#endif
67
68	/* Yes, Virginia, you have to zero the padding. */
69	struct ipt_ip {
70	/* Source and destination IP addr */
71	struct in_addr src, dst;
72	/* Mask for src and dest IP addr */
73	struct in_addr smsk, dmsk;
74	char iniface[IFNAMSIZ], outiface[IFNAMSIZ];
75	unsigned char iniface_mask[IFNAMSIZ], outiface_mask[IFNAMSIZ];
76
77	/* Protocol, 0 = ANY */
78	__u16 proto;
79
80	/* Flags word */
81	__u8 flags;
82	/* Inverse flags */
83	__u8 invflags;
84	};
85
86	/* Values for "flag" field in struct ipt_ip (general ip structure). */
87	#define IPT_F_FRAG 0x01 /* Set if rule is a fragment rule */
88	#define IPT_F_GOTO 0x02 /* Set if jump is a goto */
89	#define IPT_F_MASK 0x03 /* All possible flag bits mask. */
90
91	/* Values for "inv" field in struct ipt_ip. */
92	#define IPT_INV_VIA_IN 0x01 /* Invert the sense of IN IFACE. */
93	#define IPT_INV_VIA_OUT 0x02 /* Invert the sense of OUT IFACE */
94	#define IPT_INV_TOS 0x04 /* Invert the sense of TOS. */
95	#define IPT_INV_SRCIP 0x08 /* Invert the sense of SRC IP. */
96	#define IPT_INV_DSTIP 0x10 /* Invert the sense of DST OP. */
97	#define IPT_INV_FRAG 0x20 /* Invert the sense of FRAG. */
98	#define IPT_INV_PROTO XT_INV_PROTO
99	#define IPT_INV_MASK 0x7F /* All possible flag bits mask. */
100
101	/* This structure defines each of the firewall rules. Consists of 3
102	parts which are 1) general IP header stuff 2) match specific
103	stuff 3) the target to perform if the rule matches */
104	struct ipt_entry {
105	struct ipt_ip ip;
106
107	/* Mark with fields that we care about. */
108	unsigned int nfcache;
109
110	/* Size of ipt_entry + matches */
111	__u16 target_offset;
112	/* Size of ipt_entry + matches + target */
113	__u16 next_offset;
114
115	/* Back pointer */
116	unsigned int comefrom;
117
118	/* Packet and byte counters. */
119	struct xt_counters counters;
120
121	/* The matches (if any), then the target. */
122	unsigned char elems[0];
123	};
124
125	/*
126	* New IP firewall options for [gs]etsockopt at the RAW IP level.
127	* Unlike BSD Linux inherits IP options so you don't have to use a raw
128	* socket for this. Instead we check rights in the calls.
129	*
130	* ATTENTION: check linux/in.h before adding new number here.
131	*/
132	#define IPT_BASE_CTL 64
133
134	#define IPT_SO_SET_REPLACE (IPT_BASE_CTL)
135	#define IPT_SO_SET_ADD_COUNTERS (IPT_BASE_CTL + 1)
136	#define IPT_SO_SET_MAX IPT_SO_SET_ADD_COUNTERS
137
138	#define IPT_SO_GET_INFO (IPT_BASE_CTL)
139	#define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1)
140	#define IPT_SO_GET_REVISION_MATCH (IPT_BASE_CTL + 2)
141	#define IPT_SO_GET_REVISION_TARGET (IPT_BASE_CTL + 3)
142	#define IPT_SO_GET_MAX IPT_SO_GET_REVISION_TARGET
143
144	/* ICMP matching stuff */
145	struct ipt_icmp {
146	__u8 type; /* type to match */
147	__u8 code[2]; /* range of code */
148	__u8 invflags; /* Inverse flags */
149	};
150
151	/* Values for "inv" field for struct ipt_icmp. */
152	#define IPT_ICMP_INV 0x01 /* Invert the sense of type/code test */
153
154	/* The argument to IPT_SO_GET_INFO */
155	struct ipt_getinfo {
156	/* Which table: caller fills this in. */
157	char name[XT_TABLE_MAXNAMELEN];
158
159	/* Kernel fills these in. */
160	/* Which hook entry points are valid: bitmask */
161	unsigned int valid_hooks;
162
163	/* Hook entry points: one per netfilter hook. */
164	unsigned int hook_entry[NF_INET_NUMHOOKS];
165
166	/* Underflow points. */
167	unsigned int underflow[NF_INET_NUMHOOKS];
168
169	/* Number of entries */
170	unsigned int num_entries;
171
172	/* Size of entries. */
173	unsigned int size;
174	};
175
176	/* The argument to IPT_SO_SET_REPLACE. */
177	struct ipt_replace {
178	/* Which table. */
179	char name[XT_TABLE_MAXNAMELEN];
180
181	/* Which hook entry points are valid: bitmask. You can't
182	change this. */
183	unsigned int valid_hooks;
184
185	/* Number of entries */
186	unsigned int num_entries;
187
188	/* Total size of new entries */
189	unsigned int size;
190
191	/* Hook entry points. */
192	unsigned int hook_entry[NF_INET_NUMHOOKS];
193
194	/* Underflow points. */
195	unsigned int underflow[NF_INET_NUMHOOKS];
196
197	/* Information about old entries: */
198	/* Number of counters (must be equal to current number of entries). */
199	unsigned int num_counters;
200	/* The old entries' counters. */
201	struct xt_counters __user *counters;
202
203	/* The entries (hang off end: not really an array). */
204	struct ipt_entry entries[0];
205	};
206
207	/* The argument to IPT_SO_GET_ENTRIES. */
208	struct ipt_get_entries {
209	/* Which table: user fills this in. */
210	char name[XT_TABLE_MAXNAMELEN];
211
212	/* User fills this in: total entry size. */
213	unsigned int size;
214
215	/* The entries. */
216	struct ipt_entry entrytable[0];
217	};
218
219	/* Helper functions */
220	static __inline__ struct xt_entry_target *
221	ipt_get_target(struct ipt_entry *e)
222	{
223	return (void *)e + e->target_offset;
224	}
225
226	/*
227	* Main firewall chains definitions and global var's definitions.
228	*/
229	#endif /* _UAPI_IPTABLES_H */