tests/test-packets.c

   1 /*
   2  * Copyright (c) 2011, 2014, 2017 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <config.h>
  18 #undef NDEBUG
  19 #include "packets.h"
  20 #include <assert.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include "ovstest.h"
  25
  26 static void
  27 test_ipv4_cidr(void)
  28 {
  29     assert(ip_is_cidr(htonl(0x00000000)));
  30     assert(ip_is_cidr(htonl(0x80000000)));
  31     assert(ip_is_cidr(htonl(0xf0000000)));
  32     assert(ip_is_cidr(htonl(0xffffffe0)));
  33     assert(ip_is_cidr(htonl(0xffffffff)));
  34
  35     assert(!ip_is_cidr(htonl(0x00000001)));
  36     assert(!ip_is_cidr(htonl(0x40000000)));
  37     assert(!ip_is_cidr(htonl(0x0fffffff)));
  38     assert(!ip_is_cidr(htonl(0xffffffd0)));
  39 }
  40
  41 static void
  42 test_ipv6_static_masks(void)
  43 {
  44     /* The 'exact' and 'any' addresses should be identical to
  45      * 'in6addr_exact' and  'in6addr_any' definitions, but we redefine
  46      * them here since the pre-defined ones are used in the functions
  47      * we're testing. */
  48     struct in6_addr exact   = {{{ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
  49                                   0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff }}};
  50
  51     struct in6_addr any     = {{{ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, \
  52                                   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }}};
  53
  54     struct in6_addr neither = {{{ 0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef, \
  55                                   0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef }}};
  56
  57     assert(ipv6_mask_is_exact(&exact));
  58     assert(!ipv6_mask_is_exact(&any));
  59     assert(!ipv6_mask_is_exact(&neither));
  60
  61     assert(!ipv6_mask_is_any(&exact));
  62     assert(ipv6_mask_is_any(&any));
  63     assert(!ipv6_mask_is_any(&neither));
  64
  65 }
  66
  67 static void
  68 test_ipv6_cidr(void)
  69 {
  70     struct in6_addr dest;
  71
  72     struct in6_addr src   = {{{ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
  73                                 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }}};
  74
  75     dest = ipv6_create_mask(0);
  76     assert(ipv6_mask_is_any(&dest));
  77     assert(ipv6_count_cidr_bits(&dest) == 0);
  78     assert(ipv6_is_cidr(&dest));
  79
  80     dest = ipv6_create_mask(128);
  81     assert(ipv6_mask_is_exact(&dest));
  82     assert(ipv6_count_cidr_bits(&dest) == 128);
  83     assert(ipv6_is_cidr(&dest));
  84
  85     dest = ipv6_create_mask(1);
  86     assert(ipv6_count_cidr_bits(&dest) == 1);
  87     assert(ipv6_is_cidr(&dest));
  88
  89     dest = ipv6_create_mask(13);
  90     assert(ipv6_count_cidr_bits(&dest) == 13);
  91     assert(ipv6_is_cidr(&dest));
  92
  93     dest = ipv6_create_mask(64);
  94     assert(ipv6_count_cidr_bits(&dest) == 64);
  95     assert(ipv6_is_cidr(&dest));
  96
  97     dest = ipv6_create_mask(95);
  98     assert(ipv6_count_cidr_bits(&dest) == 95);
  99     assert(ipv6_is_cidr(&dest));
 100
 101     dest = ipv6_create_mask(96);
 102     assert(ipv6_count_cidr_bits(&dest) == 96);
 103     assert(ipv6_is_cidr(&dest));
 104
 105     dest = ipv6_create_mask(97);
 106     assert(ipv6_count_cidr_bits(&dest) == 97);
 107     assert(ipv6_is_cidr(&dest));
 108
 109     dest = ipv6_create_mask(127);
 110     assert(ipv6_count_cidr_bits(&dest) == 127);
 111     assert(ipv6_is_cidr(&dest));
 112
 113     src.s6_addr[8] = 0xf0;
 114     assert(ipv6_is_cidr(&src));
 115     assert(ipv6_count_cidr_bits(&src) == 68);
 116
 117     src.s6_addr[15] = 0x01;
 118     assert(!ipv6_is_cidr(&src));
 119     src.s6_addr[15] = 0x00;
 120     assert(ipv6_is_cidr(&src));
 121
 122     src.s6_addr[8] = 0x0f;
 123     assert(!ipv6_is_cidr(&src));
 124 }
 125
 126
 127 static void
 128 test_ipv6_masking(void)
 129 {
 130     struct in6_addr dest;
 131     struct in6_addr mask;
 132
 133     mask = ipv6_create_mask(0);
 134     dest = ipv6_addr_bitand(&in6addr_exact, &mask);
 135     assert(ipv6_count_cidr_bits(&dest) == 0);
 136
 137     mask = ipv6_create_mask(1);
 138     dest = ipv6_addr_bitand(&in6addr_exact, &mask);
 139     assert(ipv6_count_cidr_bits(&dest) == 1);
 140
 141     mask = ipv6_create_mask(13);
 142     dest = ipv6_addr_bitand(&in6addr_exact, &mask);
 143     assert(ipv6_count_cidr_bits(&dest) == 13);
 144
 145     mask = ipv6_create_mask(127);
 146     dest = ipv6_addr_bitand(&in6addr_exact, &mask);
 147     assert(ipv6_count_cidr_bits(&dest) == 127);
 148
 149     mask = ipv6_create_mask(128);
 150     dest = ipv6_addr_bitand(&in6addr_exact, &mask);
 151     assert(ipv6_count_cidr_bits(&dest) == 128);
 152 }
 153
 154 static void
 155 test_ipv6_parsing(void)
 156 {
 157     struct in6_addr o_ipv6, p_ipv6;
 158     struct in6_addr mask;
 159
 160     inet_pton(AF_INET6, "2001:db8:0:0:0:0:2:1", &o_ipv6);
 161
 162     assert(!ipv6_parse_masked("2001:db8:0:0:0:0:2:1/64", &p_ipv6, &mask));
 163     assert(ipv6_addr_equals(&o_ipv6, &p_ipv6));
 164     assert(ipv6_count_cidr_bits(&mask) == 64);
 165
 166     assert(!ipv6_parse_masked("2001:db8:0:0:0:0:2:1/ffff:ffff:ffff:ffff::",
 167                               &p_ipv6, &mask));
 168     assert(ipv6_addr_equals(&o_ipv6, &p_ipv6));
 169     assert(ipv6_count_cidr_bits(&mask) == 64);
 170
 171     assert(!ipv6_parse_masked("2001:db8:0:0:0:0:2:1", &p_ipv6, &mask));
 172     assert(ipv6_addr_equals(&o_ipv6, &p_ipv6));
 173     assert(ipv6_count_cidr_bits(&mask) == 128);
 174 }
 175
 176 static void
 177 test_packets_main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
 178 {
 179     test_ipv4_cidr();
 180     test_ipv6_static_masks();
 181     test_ipv6_cidr();
 182     test_ipv6_masking();
 183     test_ipv6_parsing();
 184 }
 185
 186 OVSTEST_REGISTER("test-packets", test_packets_main);