1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <netinet/in.h>
#include <sys/socket.h>
#include <linux/if.h>
#include <linux/netfilter/nf_tables.h>
#include <linux/netfilter/nfnetlink.h>
#include "netlink-types-internal.h"
#include "string-table.h"
static const NLType nfnl_nft_table_types[] = {
[NFTA_TABLE_NAME] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_TABLE_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
DEFINE_TYPE_SYSTEM(nfnl_nft_table);
static const NLType nfnl_nft_chain_hook_types[] = {
[NFTA_HOOK_HOOKNUM] = { .type = NETLINK_TYPE_U32 },
[NFTA_HOOK_PRIORITY] = { .type = NETLINK_TYPE_U32 },
[NFTA_HOOK_DEV] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
};
DEFINE_TYPE_SYSTEM(nfnl_nft_chain_hook);
static const NLType nfnl_nft_chain_types[] = {
[NFTA_CHAIN_TABLE] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_CHAIN_NAME] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_CHAIN_HOOK] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_chain_hook_type_system },
[NFTA_CHAIN_TYPE] = { .type = NETLINK_TYPE_STRING, .size = 16 },
[NFTA_CHAIN_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
DEFINE_TYPE_SYSTEM(nfnl_nft_chain);
static const NLType nfnl_nft_expr_meta_types[] = {
[NFTA_META_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_META_KEY] = { .type = NETLINK_TYPE_U32 },
[NFTA_META_SREG] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_expr_payload_types[] = {
[NFTA_PAYLOAD_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_PAYLOAD_BASE] = { .type = NETLINK_TYPE_U32 },
[NFTA_PAYLOAD_OFFSET] = { .type = NETLINK_TYPE_U32 },
[NFTA_PAYLOAD_LEN] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_expr_nat_types[] = {
[NFTA_NAT_TYPE] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_FAMILY] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_REG_ADDR_MIN] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_REG_ADDR_MAX] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_REG_PROTO_MIN] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_REG_PROTO_MAX] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_data_types[] = {
[NFTA_DATA_VALUE] = { .type = NETLINK_TYPE_BINARY },
};
DEFINE_TYPE_SYSTEM(nfnl_nft_data);
static const NLType nfnl_nft_expr_bitwise_types[] = {
[NFTA_BITWISE_SREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_BITWISE_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_BITWISE_LEN] = { .type = NETLINK_TYPE_U32 },
[NFTA_BITWISE_MASK] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
[NFTA_BITWISE_XOR] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
};
static const NLType nfnl_nft_expr_cmp_types[] = {
[NFTA_CMP_SREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_CMP_OP] = { .type = NETLINK_TYPE_U32 },
[NFTA_CMP_DATA] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
};
static const NLType nfnl_nft_expr_fib_types[] = {
[NFTA_FIB_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_FIB_RESULT] = { .type = NETLINK_TYPE_U32 },
[NFTA_FIB_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_expr_lookup_types[] = {
[NFTA_LOOKUP_SET] = { .type = NETLINK_TYPE_STRING },
[NFTA_LOOKUP_SREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_LOOKUP_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_LOOKUP_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_expr_masq_types[] = {
[NFTA_MASQ_FLAGS] = { .type = NETLINK_TYPE_U32 },
[NFTA_MASQ_REG_PROTO_MIN] = { .type = NETLINK_TYPE_U32 },
[NFTA_MASQ_REG_PROTO_MAX] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystemUnionElement nfnl_expr_data_type_systems[] = {
{ .name = "bitwise", .type_system = TYPE_SYSTEM_FROM_TYPE(nfnl_nft_expr_bitwise), },
{ .name = "cmp", .type_system = TYPE_SYSTEM_FROM_TYPE(nfnl_nft_expr_cmp), },
{ .name = "fib", .type_system = TYPE_SYSTEM_FROM_TYPE(nfnl_nft_expr_fib), },
{ .name = "lookup", .type_system = TYPE_SYSTEM_FROM_TYPE(nfnl_nft_expr_lookup), },
{ .name = "masq", .type_system = TYPE_SYSTEM_FROM_TYPE(nfnl_nft_expr_masq), },
{ .name = "meta", .type_system = TYPE_SYSTEM_FROM_TYPE(nfnl_nft_expr_meta), },
{ .name = "nat", .type_system = TYPE_SYSTEM_FROM_TYPE(nfnl_nft_expr_nat), },
{ .name = "payload", .type_system = TYPE_SYSTEM_FROM_TYPE(nfnl_nft_expr_payload), },
};
DEFINE_TYPE_SYSTEM_UNION_MATCH_SIBLING(nfnl_expr_data, NFTA_EXPR_NAME);
static const NLType nfnl_nft_rule_expr_types[] = {
[NFTA_EXPR_NAME] = { .type = NETLINK_TYPE_STRING, .size = 16 },
[NFTA_EXPR_DATA] = { .type = NETLINK_TYPE_UNION, .type_system_union = &nfnl_expr_data_type_system_union },
};
DEFINE_TYPE_SYSTEM(nfnl_nft_rule_expr);
static const NLType nfnl_nft_rule_types[] = {
[NFTA_RULE_TABLE] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_RULE_CHAIN] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_RULE_EXPRESSIONS] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_rule_expr_type_system }
};
DEFINE_TYPE_SYSTEM(nfnl_nft_rule);
static const NLType nfnl_nft_set_types[] = {
[NFTA_SET_TABLE] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_SET_NAME] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_SET_FLAGS] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_KEY_TYPE] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_KEY_LEN] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_DATA_TYPE] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_DATA_LEN] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_POLICY] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_ID] = { .type = NETLINK_TYPE_U32 },
};
DEFINE_TYPE_SYSTEM(nfnl_nft_set);
static const NLType nfnl_nft_setelem_types[] = {
[NFTA_SET_ELEM_KEY] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
[NFTA_SET_ELEM_DATA] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
[NFTA_SET_ELEM_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
DEFINE_TYPE_SYSTEM(nfnl_nft_setelem);
static const NLType nfnl_nft_setelem_list_types[] = {
[NFTA_SET_ELEM_LIST_TABLE] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_SET_ELEM_LIST_SET] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_SET_ELEM_LIST_ELEMENTS] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_setelem_type_system },
};
DEFINE_TYPE_SYSTEM(nfnl_nft_setelem_list);
static const NLType nfnl_subsys_nft_types [] = {
[NFT_MSG_DELTABLE] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_table_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWTABLE] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_table_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWCHAIN] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_chain_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWRULE] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_rule_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWSET] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_set_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWSETELEM] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_setelem_list_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_DELSETELEM] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_setelem_list_type_system, .size = sizeof(struct nfgenmsg) },
};
DEFINE_TYPE_SYSTEM(nfnl_subsys_nft);
static const NLType nfnl_msg_batch_types [] = {
[NFNL_BATCH_GENID] = { .type = NETLINK_TYPE_U32 }
};
DEFINE_TYPE_SYSTEM(nfnl_msg_batch);
static const NLType nfnl_subsys_none_types[] = {
[NFNL_MSG_BATCH_BEGIN] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_msg_batch_type_system, .size = sizeof(struct nfgenmsg) },
[NFNL_MSG_BATCH_END] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_msg_batch_type_system, .size = sizeof(struct nfgenmsg) },
};
DEFINE_TYPE_SYSTEM(nfnl_subsys_none);
static const NLType nfnl_types[] = {
[NFNL_SUBSYS_NONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_subsys_none_type_system },
[NFNL_SUBSYS_NFTABLES] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_subsys_nft_type_system },
};
DEFINE_TYPE_SYSTEM(nfnl);
const NLType *nfnl_get_type(uint16_t nlmsg_type) {
const NLTypeSystem *subsys;
subsys = type_system_get_type_system(&nfnl_type_system, nlmsg_type >> 8);
if (!subsys)
return NULL;
return type_system_get_type(subsys, nlmsg_type & ((1U << 8) - 1));
}
|
