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
198
199
200
201
202
203
204
205
206
207
208
|
/*
*------------------------------------------------------------------
* cnat_ports.h - port database definitions
*
* Copyright (c) 2007-2013 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#ifndef __CNAT_PORTS_H__
#define __CNAT_PORTS_H__
#include "platform_common.h"
#include "cnat_bulk_port_defs.h"
#define PORTS_PER_ADDR 65536
#define CNAT_INSTS PLATFORM_CNAT_INSTS
#define BITS_PER_INST (PORTS_PER_ADDR)
/*
* Ensure that atleast few 4 bit ports are available for RTSP
* in case we want to map 4 digit inside ports to 4 digit outside ports
*/
#define MIN_STATIC_PORT_RANGE_FOR_RTSP (9900)
extern u8 my_instance_number;
/*
* Now it is a 1-to-1 mapping between bit and port values
*/
static inline u16 bit2port (u32 bit)
{
return bit;
}
static inline uword port2bit (u16 port)
{
return port;
}
/*
* Port bitmap structure
* THIS structure is not used to be REMOVED....
*/
typedef struct {
u32 ipv4_address; /* native bit order */
u16 vrf;
u16 pad;
u32 threshold_crossed;
uword bm[(BITS_PER_INST + BITS(uword)-1)/BITS(uword)];
} cnat_portmap_t;
//cnat_portmap_t *cnat_portmap;
typedef struct {
u32 inuse;
u32 delete_time;
u32 ipv4_address; /* native bit order */
u32 last_sent_timestamp;
uword bm[(BITS_PER_INST + BITS(uword)-1)/BITS(uword)];
u32 dyn_full;
u32 private_ip_users_count; /* number of private ip's(subscribers) to this
public ip */
} cnat_portmap_v2_t;
typedef enum {
PORT_SINGLE=0,
PORT_PAIR=1,
PORT_S_EVEN=2,
PORT_S_ODD=3,
} port_pair_t;
typedef enum {
PORT_TYPE_DYNAMIC=0,
PORT_TYPE_STATIC=1,
PORT_TYPE_RTSP=2,
} port_type_t;
typedef enum {
PORT_ALLOC_ANY=1,
PORT_ALLOC_DIRECTED=2,
} port_alloc_t;
#define PORT_PROBE_LIMIT 20
/*
* randq1
* Linear congruential random number generator with
* extensively studied properties. See Numerical Recipes in C
* 2nd Ed. page 284. Known to behave according to the test vector
* supplied in the text, on X86 and Octeon.
*/
static inline u32 randq1 (u32 prev)
{
return (1664525L*prev + 1013904223L);
}
cnat_errno_t
cnat_static_port_alloc_v2(
cnat_portmap_v2_t *pm,
port_alloc_t atype,
port_pair_t pair_type,
u32 i_ipv4_address,
u16 i_port,
u32 *index,
u32 *o_ipv4_address,
u16 *o_port,
u16 static_port_range
#ifndef NO_BULK_LOGGING
, bulk_alloc_size_t bulk_size,
int *nfv9_log_req
#endif /* NO_BULK_LOGGING */
, u16 ip_n_to_1
);
cnat_errno_t
cnat_mapped_static_port_alloc_v2 (
cnat_portmap_v2_t *pm,
port_alloc_t atype,
u32 *index,
u32 ipv4_address,
u16 port
#ifndef NO_BULK_LOGGING
, int *nfv9_log_req,
bulk_alloc_size_t bulk_size
#endif
, u16 ip_n_to_1
);
cnat_errno_t
cnat_dynamic_port_alloc_v2(
cnat_portmap_v2_t *pm,
port_alloc_t atype,
port_pair_t pair_type,
u32 *index,
u32 *o_ipv4_address,
u16 *o_port,
u16 static_port_range
#ifndef NO_BULK_LOGGING
, bulk_alloc_size_t bulk_size,
int *nfv9_log_req
#endif
, u16 ip_n_to_1,
u32 *rseed_ip
);
cnat_errno_t
cnat_dynamic_port_alloc_rtsp (
cnat_portmap_v2_t *pm,
port_alloc_t atype,
port_pair_t pair_type,
u16 start_range,
u16 end_range,
u32 *index,
u32 *o_ipv4_address,
u16 *o_port
#ifndef NO_BULK_LOGGING
, bulk_alloc_size_t bulk_size,
int *nfv9_log_req
#endif
, u32 *rseed_ip
);
void cnat_port_free_v2(
cnat_portmap_v2_t *pm,
int index,
port_pair_t ptype,
u16 base_port,
u16 static_port_range);
void cnat_portmap_dump_v2(cnat_portmap_v2_t *pm,
u16 print_limit);
cnat_errno_t
nat64_static_port_alloc (
cnat_portmap_v2_t *pm,
port_alloc_t atype,
port_pair_t pair_type,
u32 *i_ipv6_address,
u16 i_port,
u32 *index,
u32 *o_ipv4_address,
u16 *o_port);
#endif /* __CNAT_PORTS_H__ */
|
