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Diffstat (limited to 'test/roc_driver.c')
| -rw-r--r-- | test/roc_driver.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/test/roc_driver.c b/test/roc_driver.c new file mode 100644 index 0000000..396c9a7 --- /dev/null +++ b/test/roc_driver.c @@ -0,0 +1,165 @@ +/* + * roc_driver.c + * + * test driver for rollover counter replay implementation + * + * David A. McGrew + * Cisco Systems, Inc. + */ + +/* + * + * Copyright (c) 2001-2006, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + + +#include <stdio.h> + +/* + * defining ROC_TEST causes small datatypes to be used in + * xtd_seq_num_t - this allows the functions to be exhaustively tested. + */ +#if ROC_NEEDS_TO_BE_TESTED +#define ROC_TEST +#endif + +#include "rdbx.h" +#include "ut_sim.h" + +err_status_t +roc_test(int num_trials); + +int +main (void) { + err_status_t status; + + printf("rollover counter test driver\n" + "David A. McGrew\n" + "Cisco Systems, Inc.\n"); + + printf("testing index functions..."); + status = roc_test(1 << 18); + if (status) { + printf("failed\n"); + exit(status); + } + printf("passed\n"); + return 0; +} + + +#define ROC_VERBOSE 0 + +err_status_t +roc_test(int num_trials) { + xtd_seq_num_t local, est, ref; + ut_connection utc; + int i, num_bad_est = 0; + int delta; + uint32_t ircvd; + double failure_rate; + + index_init(&local); + index_init(&ref); + index_init(&est); + + printf("\n\ttesting sequential insertion..."); + for (i=0; i < 2048; i++) { + delta = index_guess(&local, &est, (uint16_t) ref); +#if ROC_VERBOSE + printf("%lld, %lld, %d\n", ref, est, i); +#endif + if (ref != est) { +#if ROC_VERBOSE + printf(" *bad estimate*\n"); +#endif + ++num_bad_est; + } + index_advance(&ref, 1); + } + failure_rate = (double) num_bad_est / num_trials; + if (failure_rate > 0.01) { + printf("error: failure rate too high (%d bad estimates in %d trials)\n", + num_bad_est, num_trials); + return err_status_algo_fail; + } + printf("done\n"); + + + printf("\ttesting non-sequential insertion..."); + index_init(&local); + index_init(&ref); + index_init(&est); + ut_init(&utc); + + for (i=0; i < num_trials; i++) { + + /* get next seq num from unreliable transport simulator */ + ircvd = ut_next_index(&utc); + + /* set ref to value of ircvd */ + ref = ircvd; + + /* estimate index based on low bits of ircvd */ + delta = index_guess(&local, &est, (uint16_t) ref); +#if ROC_VERBOSE + printf("ref: %lld, local: %lld, est: %lld, ircvd: %d, delta: %d\n", + ref, local, est, ircvd, delta); +#endif + + /* now update local xtd_seq_num_t as necessary */ + if (delta > 0) + index_advance(&local, delta); + + if (ref != est) { +#if ROC_VERBOSE + printf(" *bad estimate*\n"); +#endif + /* record failure event */ + ++num_bad_est; + + /* reset local value to correct value */ + local = ref; + } + } + failure_rate = (double) num_bad_est / num_trials; + if (failure_rate > 0.01) { + printf("error: failure rate too high (%d bad estimates in %d trials)\n", + num_bad_est, num_trials); + return err_status_algo_fail; + } + printf("done\n"); + + return err_status_ok; +} |