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Vector Packet Processing
test.c
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1 /*
2  * test.c : MAP unit tests
3  *
4  * Copyright (c) 2016 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <assert.h>
19 #include "map.h"
20 
21 static map_domain_t *
22 get_domain(ip4_address_t * ip4_prefix, u8 ip4_prefix_len,
23  ip6_address_t * ip6_prefix, u8 ip6_prefix_len,
24  ip6_address_t * ip6_src, u8 ip6_src_len,
25  u8 ea_bits_len, u8 psid_offset,
26  u8 psid_length, u16 mtu, u8 flags)
27 {
28  u8 suffix_len;
29 
30  /* EA bits must be within the first 64 bits */
31  if (ea_bits_len > 0 && (ip6_prefix_len + ea_bits_len) > 64)
32  return NULL;
33 
34  map_domain_t * d = malloc(sizeof(*d));
35 
36  /* Init domain struct */
37  d->ip4_prefix.as_u32 = ip4_prefix->as_u32;
38  d->ip4_prefix_len = ip4_prefix_len;
39  d->ip6_prefix = *ip6_prefix;
40  d->ip6_prefix_len = ip6_prefix_len;
41  d->ip6_src = *ip6_src;
42  d->ip6_src_len = ip6_src_len;
43  d->ea_bits_len = ea_bits_len;
44  d->psid_offset = psid_offset;
45  d->psid_length = psid_length;
46  d->mtu = mtu;
47  d->flags = flags;
48 
49  /* How many, and which bits to grab from the IPv4 DA */
50  if (ip4_prefix_len + ea_bits_len < 32)
51  {
52  d->flags |= MAP_DOMAIN_PREFIX;
53  d->suffix_shift = 32 - ip4_prefix_len - ea_bits_len;
54  suffix_len = ea_bits_len;
55  }
56  else
57  {
58  d->suffix_shift = 0;
59  suffix_len = 32 - ip4_prefix_len;
60  }
61  d->suffix_mask = (1 << suffix_len) - 1;
62 
63  d->psid_shift = 16 - psid_length - psid_offset;
64  d->psid_mask = (1 << d->psid_length) - 1;
65 
66  if (ip6_prefix_len + suffix_len + d->psid_length > 64)
67  return NULL;
68 
69  d->ea_shift = 64 - ip6_prefix_len - suffix_len - d->psid_length;
70 
71  return d;
72 }
73 
74 
75 /*
76  * VPP-340:
77  * map_add_domain ip4-pfx 20.0.0.0/8 ip6-pfx 2001:db8::/40 ip6-src 2001:db8:ffff::/96 ea-bits-len 24 psid-offset 0 psid-len 0 map-t
78  * IPv4 src = 100.0.0.1
79  * IPv4 dst = 20.169.201.219
80  * UDP dest port = 1232
81  * IPv6 src = 2001:db8:ffff::6400:1
82  * IPv6 dst = a9c9:dfb8::14a9:c9db:0
83  * a9c9:dfb8::14a9:c9db:0 != 2001:db8:a9:c9db:0:14a9:c9db:0
84  */
85 static void
86 test_map_t_destaddr (void)
87 {
88  ip4_address_t ip4_prefix;
89  ip6_address_t ip6_prefix;
90  ip6_address_t ip6_src;
91 
92  ip4_prefix.as_u32 = clib_host_to_net_u32(0x14000000);
93  ip6_prefix.as_u64[0] = clib_host_to_net_u64(0x20010db800000000);
94  ip6_prefix.as_u64[1] = 0;
95  ip6_src.as_u64[0] = clib_host_to_net_u64(0x20010db8ffff0000);
96  map_domain_t * d = get_domain (&ip4_prefix, 8, &ip6_prefix, 40, &ip6_src, 96, 24, 0, 0, 0, MAP_DOMAIN_TRANSLATION);
97 
98  ip6_address_t dst6;
99 
100  dst6.as_u64[0] = map_get_pfx(d, 0x14a9c9db, 1232);
101  dst6.as_u64[1] = map_get_sfx(d, 0x14a9c9db, 1232);
102  assert(dst6.as_u64[0] == 0x20010db800a9c9db);
103  assert(dst6.as_u64[1] == 0x000014a9c9db0000);
104 }
105 
106 /*
107  * VPP-228
108  * ip4-pfx 20.0.0.0/8
109  * ip6-pfx 2001:db8::/<n>
110  * ip6-src 2001:db8:ffff::1
111  * ea-bits-len 16 psid-offset 6 psid-len 8
112  * 20.169.201.219 port 1232
113  */
114 static void
115 test_map_eabits (void)
116 {
117  ip4_address_t ip4_prefix;
118  ip6_address_t ip6_prefix;
119  ip6_address_t ip6_src;
120  ip6_address_t dst6;
121 
122  ip4_prefix.as_u32 = clib_host_to_net_u32(0x14000000);
123  ip6_prefix.as_u64[0] = clib_host_to_net_u64(0x20010db800000000);
124  ip6_prefix.as_u64[1] = 0;
125  ip6_src.as_u64[0] = clib_host_to_net_u64(0x20010db8ffff0000);
126  ip6_src.as_u64[1] = clib_host_to_net_u64(0x0000000000000001);
127  map_domain_t * d = get_domain (&ip4_prefix, 16, &ip6_prefix, 48, &ip6_src,
128  128, 16, 6, 8, 0, 0);
129  assert(!d);
130 
131  //20.0.0.0/8 2001:db8::/32 4 2001:db8:a000::14a0:0:0
132  d = get_domain (&ip4_prefix, 8, &ip6_prefix, 32, &ip6_src,
133  128, 4, 0, 0, 0, 0);
134  dst6.as_u64[0] = map_get_pfx(d, 0x14a9c9db, 1232);
135  dst6.as_u64[1] = map_get_sfx(d, 0x14a9c9db, 1232);
136  assert(dst6.as_u64[0] == 0x20010db8a0000000);
137  assert(dst6.as_u64[1] == 0x000014a000000000);
138 
139  //20.0.0.0/8 2001:db8::/32 8 2001:db8:a900::14a9:0:0
140  d = get_domain (&ip4_prefix, 8, &ip6_prefix, 32, &ip6_src,
141  128, 8, 0, 0, 0, 0);
142  dst6.as_u64[0] = map_get_pfx(d, 0x14a9c9db, 1232);
143  dst6.as_u64[1] = map_get_sfx(d, 0x14a9c9db, 1232);
144  assert(dst6.as_u64[0] == 0x20010db8a9000000);
145  assert(dst6.as_u64[1] == 0x000014a900000000);
146 
147  //20.0.0.0/8 2001:db8::/32 10 2001:db8:a9c0::14a9:c000:0
148  d = get_domain (&ip4_prefix, 8, &ip6_prefix, 32, &ip6_src,
149  128, 10, 0, 0, 0, 0);
150  dst6.as_u64[0] = map_get_pfx(d, 0x14a9c9db, 1232);
151  dst6.as_u64[1] = map_get_sfx(d, 0x14a9c9db, 1232);
152  assert(dst6.as_u64[0] == 0x20010db8a9c00000);
153  assert(dst6.as_u64[1] == 0x000014a9c0000000);
154 
155  //20.0.0.0/8 2001:db8::/32 16 2001:db8:a9c9::14a9:c900:0
156  d = get_domain (&ip4_prefix, 8, &ip6_prefix, 32, &ip6_src,
157  128, 16, 0, 0, 0, 0);
158  dst6.as_u64[0] = map_get_pfx(d, 0x14a9c9db, 1232);
159  dst6.as_u64[1] = map_get_sfx(d, 0x14a9c9db, 1232);
160  assert(dst6.as_u64[0] == 0x20010db8a9c90000);
161  assert(dst6.as_u64[1] == 0x000014a9c9000000);
162 
163  //20.0.0.0/8 2001:db8::/32 20 2001:db8:a9c9:d000:0:14a9:c9d0:0
164  d = get_domain (&ip4_prefix, 8, &ip6_prefix, 32, &ip6_src,
165  128, 20, 0, 0, 0, 0);
166  dst6.as_u64[0] = map_get_pfx(d, 0x14a9c9db, 1232);
167  dst6.as_u64[1] = map_get_sfx(d, 0x14a9c9db, 1232);
168  assert(dst6.as_u64[0] == 0x20010db8a9c9d000);
169  assert(dst6.as_u64[1] == 0x000014a9c9d00000);
170 
171  //20.0.0.0/8 2001:db8::/32 23 2001:db8:a9c9:da00:0:14a9:c9da:0
172  d = get_domain (&ip4_prefix, 8, &ip6_prefix, 32, &ip6_src,
173  128, 23, 0, 0, 0, 0);
174  dst6.as_u64[0] = map_get_pfx(d, 0x14a9c9db, 1232);
175  dst6.as_u64[1] = map_get_sfx(d, 0x14a9c9db, 1232);
176  assert(dst6.as_u64[0] == 0x20010db8a9c9da00);
177  assert(dst6.as_u64[1] == 0x000014a9c9da0000);
178 
179  //20.169.201.0/24 2001:db8::/32 7 2001:db8:da00::14a9:c9da:0
180  d = get_domain (&ip4_prefix, 8, &ip6_prefix, 32, &ip6_src,
181  128, 7, 0, 0, 0, 0);
182  dst6.as_u64[0] = map_get_pfx(d, 0x14a9c9db, 1232);
183  dst6.as_u64[1] = map_get_sfx(d, 0x14a9c9db, 1232);
184  assert(dst6.as_u64[0] == 0x20010db8a8000000);
185  assert(dst6.as_u64[1] == 0x000014a800000000);
186 }
187 
188 #define foreach_test_case \
189  _(map_t_destaddr) \
190  _(map_eabits)
191 
192 static void
193 run_tests (void)
194 {
195 #define _(_test_name) \
196  test_ ## _test_name ();
197 
198  foreach_test_case
199 #undef _
200 }
201 
202 int main()
203 {
204  run_tests ();
205  return 0;
206 }
MAP_DOMAIN_PREFIX
@ MAP_DOMAIN_PREFIX
Definition: map.h:64
assert
#define assert(x)
Definition: dlmalloc.c:31
map_domain_t::ip4_prefix_len
u8 ip4_prefix_len
Definition: map.h:100
test_map_t_destaddr
static void test_map_t_destaddr(void)
Definition: test.c:86
map_domain_t::mtu
u16 mtu
Definition: map.h:86
test_map_eabits
static void test_map_eabits(void)
Definition: test.c:115
ip4_address_t::as_u32
u32 as_u32
Definition: ip4_packet.h:57
main
int main()
Definition: test.c:202
u16
unsigned short u16
Definition: types.h:57
get_domain
static map_domain_t * get_domain(ip4_address_t *ip4_prefix, u8 ip4_prefix_len, ip6_address_t *ip6_prefix, u8 ip6_prefix_len, ip6_address_t *ip6_src, u8 ip6_src_len, u8 ea_bits_len, u8 psid_offset, u8 psid_length, u16 mtu, u8 flags)
Definition: test.c:22
map_domain_t
Definition: map.h:76
ip6_prefix
manual_print typedef ip6_prefix
Definition: ip_types.api:125
map_domain_t::suffix_mask
u32 suffix_mask
Definition: map.h:83
map_domain_t::suffix_shift
u8 suffix_shift
Definition: map.h:96
map_get_sfx
static_always_inline u64 map_get_sfx(map_domain_t *d, u32 addr, u16 port)
Definition: map.h:274
map_domain_t::flags
map_domain_flags_e flags
Definition: map.h:87
map_domain_t::psid_shift
u8 psid_shift
Definition: map.h:95
map_domain_t::ip6_src
ip6_address_t ip6_src
Definition: map.h:80
map_domain_t::psid_offset
u8 psid_offset
Definition: map.h:91
map_domain_t::ip6_prefix
ip6_address_t ip6_prefix
Definition: map.h:81
ip4_address_t
Definition: ip4_packet.h:50
map.h
map_domain_t::ip4_prefix
ip4_address_t ip4_prefix
Definition: map.h:84
map_get_pfx
static_always_inline u64 map_get_pfx(map_domain_t *d, u32 addr, u16 port)
Definition: map.h:249
run_tests
static void run_tests(void)
Definition: test.c:193
map_domain_t::ip6_prefix_len
u8 ip6_prefix_len
Definition: map.h:88
MAP_DOMAIN_TRANSLATION
@ MAP_DOMAIN_TRANSLATION
Definition: map.h:65
ip4_prefix
manual_print typedef ip4_prefix
Definition: ip_types.api:130
map_domain_t::psid_length
u8 psid_length
Definition: map.h:92
foreach_test_case
#define foreach_test_case
Definition: test.c:188
u8
unsigned char u8
Definition: types.h:56
map_domain_t::psid_mask
u16 psid_mask
Definition: map.h:85
malloc
void * malloc(size_t size)
Definition: mem.c:33
map_domain_t::ea_bits_len
u8 ea_bits_len
Definition: map.h:90
map_domain_t::ea_shift
u8 ea_shift
Definition: map.h:97
map_domain_t::ip6_src_len
u8 ip6_src_len
Definition: map.h:89
flags
vl_api_wireguard_peer_flags_t flags
Definition: wireguard.api:105