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10#ifndef _NF_CONNTRACK_TUPLE_H
11#define _NF_CONNTRACK_TUPLE_H
12
13#include <linux/netfilter/x_tables.h>
14#include <linux/netfilter/nf_conntrack_tuple_common.h>
15#include <linux/list_nulls.h>
16
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24
25#define NF_CT_TUPLE_L3SIZE ARRAY_SIZE(((union nf_inet_addr *)NULL)->all)
26
27
28struct nf_conntrack_man {
29 union nf_inet_addr u3;
30 union nf_conntrack_man_proto u;
31
32 u_int16_t l3num;
33};
34
35
36struct nf_conntrack_tuple {
37 struct nf_conntrack_man src;
38
39
40 struct {
41 union nf_inet_addr u3;
42 union {
43
44 __be16 all;
45
46 struct {
47 __be16 port;
48 } tcp;
49 struct {
50 __be16 port;
51 } udp;
52 struct {
53 u_int8_t type, code;
54 } icmp;
55 struct {
56 __be16 port;
57 } dccp;
58 struct {
59 __be16 port;
60 } sctp;
61 struct {
62 __be16 key;
63 } gre;
64 } u;
65
66
67 u_int8_t protonum;
68
69
70 u_int8_t dir;
71 } dst;
72};
73
74struct nf_conntrack_tuple_mask {
75 struct {
76 union nf_inet_addr u3;
77 union nf_conntrack_man_proto u;
78 } src;
79};
80
81static inline void nf_ct_dump_tuple_ip(const struct nf_conntrack_tuple *t)
82{
83#ifdef DEBUG
84 printk("tuple %p: %u %pI4:%hu -> %pI4:%hu\n",
85 t, t->dst.protonum,
86 &t->src.u3.ip, ntohs(t->src.u.all),
87 &t->dst.u3.ip, ntohs(t->dst.u.all));
88#endif
89}
90
91static inline void nf_ct_dump_tuple_ipv6(const struct nf_conntrack_tuple *t)
92{
93#ifdef DEBUG
94 printk("tuple %p: %u %pI6 %hu -> %pI6 %hu\n",
95 t, t->dst.protonum,
96 t->src.u3.all, ntohs(t->src.u.all),
97 t->dst.u3.all, ntohs(t->dst.u.all));
98#endif
99}
100
101static inline void nf_ct_dump_tuple(const struct nf_conntrack_tuple *t)
102{
103 switch (t->src.l3num) {
104 case AF_INET:
105 nf_ct_dump_tuple_ip(t);
106 break;
107 case AF_INET6:
108 nf_ct_dump_tuple_ipv6(t);
109 break;
110 }
111}
112
113
114#define NF_CT_DIRECTION(h) \
115 ((enum ip_conntrack_dir)(h)->tuple.dst.dir)
116
117
118struct nf_conntrack_tuple_hash {
119 struct hlist_nulls_node hnnode;
120 struct nf_conntrack_tuple tuple;
121};
122
123static inline bool __nf_ct_tuple_src_equal(const struct nf_conntrack_tuple *t1,
124 const struct nf_conntrack_tuple *t2)
125{
126 return (nf_inet_addr_cmp(&t1->src.u3, &t2->src.u3) &&
127 t1->src.u.all == t2->src.u.all &&
128 t1->src.l3num == t2->src.l3num);
129}
130
131static inline bool __nf_ct_tuple_dst_equal(const struct nf_conntrack_tuple *t1,
132 const struct nf_conntrack_tuple *t2)
133{
134 return (nf_inet_addr_cmp(&t1->dst.u3, &t2->dst.u3) &&
135 t1->dst.u.all == t2->dst.u.all &&
136 t1->dst.protonum == t2->dst.protonum);
137}
138
139static inline bool nf_ct_tuple_equal(const struct nf_conntrack_tuple *t1,
140 const struct nf_conntrack_tuple *t2)
141{
142 return __nf_ct_tuple_src_equal(t1, t2) &&
143 __nf_ct_tuple_dst_equal(t1, t2);
144}
145
146static inline bool
147nf_ct_tuple_mask_equal(const struct nf_conntrack_tuple_mask *m1,
148 const struct nf_conntrack_tuple_mask *m2)
149{
150 return (nf_inet_addr_cmp(&m1->src.u3, &m2->src.u3) &&
151 m1->src.u.all == m2->src.u.all);
152}
153
154static inline bool
155nf_ct_tuple_src_mask_cmp(const struct nf_conntrack_tuple *t1,
156 const struct nf_conntrack_tuple *t2,
157 const struct nf_conntrack_tuple_mask *mask)
158{
159 int count;
160
161 for (count = 0; count < NF_CT_TUPLE_L3SIZE; count++) {
162 if ((t1->src.u3.all[count] ^ t2->src.u3.all[count]) &
163 mask->src.u3.all[count])
164 return false;
165 }
166
167 if ((t1->src.u.all ^ t2->src.u.all) & mask->src.u.all)
168 return false;
169
170 if (t1->src.l3num != t2->src.l3num ||
171 t1->dst.protonum != t2->dst.protonum)
172 return false;
173
174 return true;
175}
176
177static inline bool
178nf_ct_tuple_mask_cmp(const struct nf_conntrack_tuple *t,
179 const struct nf_conntrack_tuple *tuple,
180 const struct nf_conntrack_tuple_mask *mask)
181{
182 return nf_ct_tuple_src_mask_cmp(t, tuple, mask) &&
183 __nf_ct_tuple_dst_equal(t, tuple);
184}
185
186#endif
187