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UAPI: (Scripted) Disintegrate include/linux/netfilter_arp

David Howells committed 14 years ago

Commit 89220821 parent a8201415 files · +209 −201Browse files

Showing the changes to include/uapi/linux (3 of 5 files). Show all

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3 files
  1. include/uapi/linux/netfilter_arp/Kbuild +2 −0
  2. include/uapi/linux/netfilter_arp/arp_tables.h +206 −0
  3. include/uapi/linux/netfilter_arp/arpt_mangle.h +26 −0
include/uapi/linux/netfilter_arp/Kbuild+2−0
@@ -1 +1,3 @@
11 # UAPI Header export list
2+header-y += arp_tables.h
3+header-y += arpt_mangle.h
include/uapi/linux/netfilter_arp/arp_tables.h+206−0
@@ -0,0 +1,206 @@
1+/*
2+ * Format of an ARP firewall descriptor
3+ *
4+ * src, tgt, src_mask, tgt_mask, arpop, arpop_mask are always stored in
5+ * network byte order.
6+ * flags are stored in host byte order (of course).
7+ */
8+
9+#ifndef _UAPI_ARPTABLES_H
10+#define _UAPI_ARPTABLES_H
11+
12+#include <linux/types.h>
13+#include <linux/compiler.h>
14+#include <linux/netfilter_arp.h>
15+
16+#include <linux/netfilter/x_tables.h>
17+
18+#ifndef __KERNEL__
19+#define ARPT_FUNCTION_MAXNAMELEN XT_FUNCTION_MAXNAMELEN
20+#define ARPT_TABLE_MAXNAMELEN XT_TABLE_MAXNAMELEN
21+#define arpt_entry_target xt_entry_target
22+#define arpt_standard_target xt_standard_target
23+#define arpt_error_target xt_error_target
24+#define ARPT_CONTINUE XT_CONTINUE
25+#define ARPT_RETURN XT_RETURN
26+#define arpt_counters_info xt_counters_info
27+#define arpt_counters xt_counters
28+#define ARPT_STANDARD_TARGET XT_STANDARD_TARGET
29+#define ARPT_ERROR_TARGET XT_ERROR_TARGET
30+#define ARPT_ENTRY_ITERATE(entries, size, fn, args...) \
31+ XT_ENTRY_ITERATE(struct arpt_entry, entries, size, fn, ## args)
32+#endif
33+
34+#define ARPT_DEV_ADDR_LEN_MAX 16
35+
36+struct arpt_devaddr_info {
37+ char addr[ARPT_DEV_ADDR_LEN_MAX];
38+ char mask[ARPT_DEV_ADDR_LEN_MAX];
39+};
40+
41+/* Yes, Virginia, you have to zero the padding. */
42+struct arpt_arp {
43+ /* Source and target IP addr */
44+ struct in_addr src, tgt;
45+ /* Mask for src and target IP addr */
46+ struct in_addr smsk, tmsk;
47+
48+ /* Device hw address length, src+target device addresses */
49+ __u8 arhln, arhln_mask;
50+ struct arpt_devaddr_info src_devaddr;
51+ struct arpt_devaddr_info tgt_devaddr;
52+
53+ /* ARP operation code. */
54+ __be16 arpop, arpop_mask;
55+
56+ /* ARP hardware address and protocol address format. */
57+ __be16 arhrd, arhrd_mask;
58+ __be16 arpro, arpro_mask;
59+
60+ /* The protocol address length is only accepted if it is 4
61+ * so there is no use in offering a way to do filtering on it.
62+ */
63+
64+ char iniface[IFNAMSIZ], outiface[IFNAMSIZ];
65+ unsigned char iniface_mask[IFNAMSIZ], outiface_mask[IFNAMSIZ];
66+
67+ /* Flags word */
68+ __u8 flags;
69+ /* Inverse flags */
70+ __u16 invflags;
71+};
72+
73+/* Values for "flag" field in struct arpt_ip (general arp structure).
74+ * No flags defined yet.
75+ */
76+#define ARPT_F_MASK 0x00 /* All possible flag bits mask. */
77+
78+/* Values for "inv" field in struct arpt_arp. */
79+#define ARPT_INV_VIA_IN 0x0001 /* Invert the sense of IN IFACE. */
80+#define ARPT_INV_VIA_OUT 0x0002 /* Invert the sense of OUT IFACE */
81+#define ARPT_INV_SRCIP 0x0004 /* Invert the sense of SRC IP. */
82+#define ARPT_INV_TGTIP 0x0008 /* Invert the sense of TGT IP. */
83+#define ARPT_INV_SRCDEVADDR 0x0010 /* Invert the sense of SRC DEV ADDR. */
84+#define ARPT_INV_TGTDEVADDR 0x0020 /* Invert the sense of TGT DEV ADDR. */
85+#define ARPT_INV_ARPOP 0x0040 /* Invert the sense of ARP OP. */
86+#define ARPT_INV_ARPHRD 0x0080 /* Invert the sense of ARP HRD. */
87+#define ARPT_INV_ARPPRO 0x0100 /* Invert the sense of ARP PRO. */
88+#define ARPT_INV_ARPHLN 0x0200 /* Invert the sense of ARP HLN. */
89+#define ARPT_INV_MASK 0x03FF /* All possible flag bits mask. */
90+
91+/* This structure defines each of the firewall rules. Consists of 3
92+ parts which are 1) general ARP header stuff 2) match specific
93+ stuff 3) the target to perform if the rule matches */
94+struct arpt_entry
95+{
96+ struct arpt_arp arp;
97+
98+ /* Size of arpt_entry + matches */
99+ __u16 target_offset;
100+ /* Size of arpt_entry + matches + target */
101+ __u16 next_offset;
102+
103+ /* Back pointer */
104+ unsigned int comefrom;
105+
106+ /* Packet and byte counters. */
107+ struct xt_counters counters;
108+
109+ /* The matches (if any), then the target. */
110+ unsigned char elems[0];
111+};
112+
113+/*
114+ * New IP firewall options for [gs]etsockopt at the RAW IP level.
115+ * Unlike BSD Linux inherits IP options so you don't have to use a raw
116+ * socket for this. Instead we check rights in the calls.
117+ *
118+ * ATTENTION: check linux/in.h before adding new number here.
119+ */
120+#define ARPT_BASE_CTL 96
121+
122+#define ARPT_SO_SET_REPLACE (ARPT_BASE_CTL)
123+#define ARPT_SO_SET_ADD_COUNTERS (ARPT_BASE_CTL + 1)
124+#define ARPT_SO_SET_MAX ARPT_SO_SET_ADD_COUNTERS
125+
126+#define ARPT_SO_GET_INFO (ARPT_BASE_CTL)
127+#define ARPT_SO_GET_ENTRIES (ARPT_BASE_CTL + 1)
128+/* #define ARPT_SO_GET_REVISION_MATCH (APRT_BASE_CTL + 2) */
129+#define ARPT_SO_GET_REVISION_TARGET (ARPT_BASE_CTL + 3)
130+#define ARPT_SO_GET_MAX (ARPT_SO_GET_REVISION_TARGET)
131+
132+/* The argument to ARPT_SO_GET_INFO */
133+struct arpt_getinfo {
134+ /* Which table: caller fills this in. */
135+ char name[XT_TABLE_MAXNAMELEN];
136+
137+ /* Kernel fills these in. */
138+ /* Which hook entry points are valid: bitmask */
139+ unsigned int valid_hooks;
140+
141+ /* Hook entry points: one per netfilter hook. */
142+ unsigned int hook_entry[NF_ARP_NUMHOOKS];
143+
144+ /* Underflow points. */
145+ unsigned int underflow[NF_ARP_NUMHOOKS];
146+
147+ /* Number of entries */
148+ unsigned int num_entries;
149+
150+ /* Size of entries. */
151+ unsigned int size;
152+};
153+
154+/* The argument to ARPT_SO_SET_REPLACE. */
155+struct arpt_replace {
156+ /* Which table. */
157+ char name[XT_TABLE_MAXNAMELEN];
158+
159+ /* Which hook entry points are valid: bitmask. You can't
160+ change this. */
161+ unsigned int valid_hooks;
162+
163+ /* Number of entries */
164+ unsigned int num_entries;
165+
166+ /* Total size of new entries */
167+ unsigned int size;
168+
169+ /* Hook entry points. */
170+ unsigned int hook_entry[NF_ARP_NUMHOOKS];
171+
172+ /* Underflow points. */
173+ unsigned int underflow[NF_ARP_NUMHOOKS];
174+
175+ /* Information about old entries: */
176+ /* Number of counters (must be equal to current number of entries). */
177+ unsigned int num_counters;
178+ /* The old entries' counters. */
179+ struct xt_counters __user *counters;
180+
181+ /* The entries (hang off end: not really an array). */
182+ struct arpt_entry entries[0];
183+};
184+
185+/* The argument to ARPT_SO_GET_ENTRIES. */
186+struct arpt_get_entries {
187+ /* Which table: user fills this in. */
188+ char name[XT_TABLE_MAXNAMELEN];
189+
190+ /* User fills this in: total entry size. */
191+ unsigned int size;
192+
193+ /* The entries. */
194+ struct arpt_entry entrytable[0];
195+};
196+
197+/* Helper functions */
198+static __inline__ struct xt_entry_target *arpt_get_target(struct arpt_entry *e)
199+{
200+ return (void *)e + e->target_offset;
201+}
202+
203+/*
204+ * Main firewall chains definitions and global var's definitions.
205+ */
206+#endif /* _UAPI_ARPTABLES_H */
include/uapi/linux/netfilter_arp/arpt_mangle.h+26−0
@@ -0,0 +1,26 @@
1+#ifndef _ARPT_MANGLE_H
2+#define _ARPT_MANGLE_H
3+#include <linux/netfilter_arp/arp_tables.h>
4+
5+#define ARPT_MANGLE_ADDR_LEN_MAX sizeof(struct in_addr)
6+struct arpt_mangle
7+{
8+ char src_devaddr[ARPT_DEV_ADDR_LEN_MAX];
9+ char tgt_devaddr[ARPT_DEV_ADDR_LEN_MAX];
10+ union {
11+ struct in_addr src_ip;
12+ } u_s;
13+ union {
14+ struct in_addr tgt_ip;
15+ } u_t;
16+ u_int8_t flags;
17+ int target;
18+};
19+
20+#define ARPT_MANGLE_SDEV 0x01
21+#define ARPT_MANGLE_TDEV 0x02
22+#define ARPT_MANGLE_SIP 0x04
23+#define ARPT_MANGLE_TIP 0x08
24+#define ARPT_MANGLE_MASK 0x0f
25+
26+#endif /* _ARPT_MANGLE_H */