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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 | // SPDX-License-Identifier: GPL-2.0 /* Check that after SEQ number wrap-around: * 1. SEQ-extension has upper bytes set * 2. TCP conneciton is alive and no TCPAOBad segments * In order to test (2), the test doesn't just adjust seq number for a queue * on a connected socket, but migrates it to another sk+port number, so * that there won't be any delayed packets that will fail to verify * with the new SEQ numbers. */ #include <inttypes.h> #include "aolib.h" const unsigned int nr_packets = 1000; const unsigned int msg_len = 1000; const unsigned int quota = nr_packets * msg_len; unsigned int client_new_port; /* Move them closer to roll-over */ static void test_adjust_seqs(struct tcp_sock_state *img, struct tcp_ao_repair *ao_img, bool server) { uint32_t new_seq1, new_seq2; /* make them roll-over during quota, but on different segments */ if (server) { new_seq1 = ((uint32_t)-1) - msg_len; new_seq2 = ((uint32_t)-1) - (quota - 2 * msg_len); } else { new_seq1 = ((uint32_t)-1) - (quota - 2 * msg_len); new_seq2 = ((uint32_t)-1) - msg_len; } img->in.seq = new_seq1; img->trw.snd_wl1 = img->in.seq - msg_len; img->out.seq = new_seq2; img->trw.rcv_wup = img->in.seq; } static int test_sk_restore(struct tcp_sock_state *img, struct tcp_ao_repair *ao_img, sockaddr_af *saddr, const union tcp_addr daddr, unsigned int dport, struct tcp_ao_counters *cnt) { int sk; sk = socket(test_family, SOCK_STREAM, IPPROTO_TCP); if (sk < 0) test_error("socket()"); test_enable_repair(sk); test_sock_restore(sk, img, saddr, daddr, dport); if (test_add_repaired_key(sk, DEFAULT_TEST_PASSWORD, 0, daddr, -1, 100, 100)) test_error("setsockopt(TCP_AO_ADD_KEY)"); test_ao_restore(sk, ao_img); if (test_get_tcp_ao_counters(sk, cnt)) test_error("test_get_tcp_ao_counters()"); test_disable_repair(sk); test_sock_state_free(img); return sk; } static void *server_fn(void *arg) { uint64_t before_good, after_good, after_bad; struct tcp_ao_counters ao1, ao2; struct tcp_sock_state img; struct tcp_ao_repair ao_img; sockaddr_af saddr; ssize_t bytes; int sk, lsk; lsk = test_listen_socket(this_ip_addr, test_server_port, 1); if (test_add_key(lsk, DEFAULT_TEST_PASSWORD, this_ip_dest, -1, 100, 100)) test_error("setsockopt(TCP_AO_ADD_KEY)"); synchronize_threads(); /* 1: MKT added => connect() */ if (test_wait_fd(lsk, TEST_TIMEOUT_SEC, 0)) test_error("test_wait_fd()"); sk = accept(lsk, NULL, NULL); if (sk < 0) test_error("accept()"); synchronize_threads(); /* 2: accepted => send data */ close(lsk); bytes = test_server_run(sk, quota, TEST_TIMEOUT_SEC); if (bytes != quota) { if (bytes > 0) test_fail("server served: %zd", bytes); else test_fail("server returned: %zd", bytes); goto out; } before_good = netstat_get_one("TCPAOGood", NULL); synchronize_threads(); /* 3: restore the connection on another port */ test_enable_repair(sk); test_sock_checkpoint(sk, &img, &saddr); test_ao_checkpoint(sk, &ao_img); test_kill_sk(sk); #ifdef IPV6_TEST saddr.sin6_port = htons(ntohs(saddr.sin6_port) + 1); #else saddr.sin_port = htons(ntohs(saddr.sin_port) + 1); #endif test_adjust_seqs(&img, &ao_img, true); synchronize_threads(); /* 4: dump finished */ sk = test_sk_restore(&img, &ao_img, &saddr, this_ip_dest, client_new_port, &ao1); synchronize_threads(); /* 5: verify counters during SEQ-number rollover */ bytes = test_server_run(sk, quota, TEST_TIMEOUT_SEC); if (bytes != quota) { if (bytes > 0) test_fail("server served: %zd", bytes); else test_fail("server returned: %zd", bytes); } else { test_ok("server alive"); } if (test_get_tcp_ao_counters(sk, &ao2)) test_error("test_get_tcp_ao_counters()"); after_good = netstat_get_one("TCPAOGood", NULL); test_tcp_ao_counters_cmp(NULL, &ao1, &ao2, TEST_CNT_GOOD); if (after_good <= before_good) { test_fail("TCPAOGood counter did not increase: %zu <= %zu", after_good, before_good); } else { test_ok("TCPAOGood counter increased %zu => %zu", before_good, after_good); } after_bad = netstat_get_one("TCPAOBad", NULL); if (after_bad) test_fail("TCPAOBad counter is non-zero: %zu", after_bad); else test_ok("TCPAOBad counter didn't increase"); test_enable_repair(sk); test_ao_checkpoint(sk, &ao_img); if (ao_img.snd_sne && ao_img.rcv_sne) { test_ok("SEQ extension incremented: %u/%u", ao_img.snd_sne, ao_img.rcv_sne); } else { test_fail("SEQ extension was not incremented: %u/%u", ao_img.snd_sne, ao_img.rcv_sne); } synchronize_threads(); /* 6: verified => closed */ out: close(sk); return NULL; } static void *client_fn(void *arg) { uint64_t before_good, after_good, after_bad; struct tcp_ao_counters ao1, ao2; struct tcp_sock_state img; struct tcp_ao_repair ao_img; sockaddr_af saddr; int sk; sk = socket(test_family, SOCK_STREAM, IPPROTO_TCP); if (sk < 0) test_error("socket()"); if (test_add_key(sk, DEFAULT_TEST_PASSWORD, this_ip_dest, -1, 100, 100)) test_error("setsockopt(TCP_AO_ADD_KEY)"); synchronize_threads(); /* 1: MKT added => connect() */ if (test_connect_socket(sk, this_ip_dest, test_server_port) <= 0) test_error("failed to connect()"); synchronize_threads(); /* 2: accepted => send data */ if (test_client_verify(sk, msg_len, nr_packets, TEST_TIMEOUT_SEC)) { test_fail("pre-migrate verify failed"); return NULL; } before_good = netstat_get_one("TCPAOGood", NULL); synchronize_threads(); /* 3: restore the connection on another port */ test_enable_repair(sk); test_sock_checkpoint(sk, &img, &saddr); test_ao_checkpoint(sk, &ao_img); test_kill_sk(sk); #ifdef IPV6_TEST client_new_port = ntohs(saddr.sin6_port) + 1; saddr.sin6_port = htons(ntohs(saddr.sin6_port) + 1); #else client_new_port = ntohs(saddr.sin_port) + 1; saddr.sin_port = htons(ntohs(saddr.sin_port) + 1); #endif test_adjust_seqs(&img, &ao_img, false); synchronize_threads(); /* 4: dump finished */ sk = test_sk_restore(&img, &ao_img, &saddr, this_ip_dest, test_server_port + 1, &ao1); synchronize_threads(); /* 5: verify counters during SEQ-number rollover */ if (test_client_verify(sk, msg_len, nr_packets, TEST_TIMEOUT_SEC)) test_fail("post-migrate verify failed"); else test_ok("post-migrate connection alive"); if (test_get_tcp_ao_counters(sk, &ao2)) test_error("test_get_tcp_ao_counters()"); after_good = netstat_get_one("TCPAOGood", NULL); test_tcp_ao_counters_cmp(NULL, &ao1, &ao2, TEST_CNT_GOOD); if (after_good <= before_good) { test_fail("TCPAOGood counter did not increase: %zu <= %zu", after_good, before_good); } else { test_ok("TCPAOGood counter increased %zu => %zu", before_good, after_good); } after_bad = netstat_get_one("TCPAOBad", NULL); if (after_bad) test_fail("TCPAOBad counter is non-zero: %zu", after_bad); else test_ok("TCPAOBad counter didn't increase"); synchronize_threads(); /* 6: verified => closed */ close(sk); synchronize_threads(); /* don't race to exit: let server exit() */ return NULL; } int main(int argc, char *argv[]) { test_init(7, server_fn, client_fn); return 0; } |