// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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#ifdef DEBUG
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bool __init wg_packet_counter_selftest(void)
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{
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struct noise_replay_counter *counter;
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unsigned int test_num = 0, i;
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bool success = true;
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counter = kmalloc(sizeof(*counter), GFP_KERNEL);
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if (unlikely(!counter)) {
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pr_err("nonce counter self-test malloc: FAIL\n");
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return false;
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}
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#define T_INIT do { \
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memset(counter, 0, sizeof(*counter)); \
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spin_lock_init(&counter->lock); \
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} while (0)
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#define T_LIM (COUNTER_WINDOW_SIZE + 1)
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#define T(n, v) do { \
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++test_num; \
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if (counter_validate(counter, n) != (v)) { \
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pr_err("nonce counter self-test %u: FAIL\n", \
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test_num); \
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success = false; \
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} \
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} while (0)
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T_INIT;
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/* 1 */ T(0, true);
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/* 2 */ T(1, true);
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/* 3 */ T(1, false);
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/* 4 */ T(9, true);
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/* 5 */ T(8, true);
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/* 6 */ T(7, true);
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/* 7 */ T(7, false);
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/* 8 */ T(T_LIM, true);
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/* 9 */ T(T_LIM - 1, true);
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/* 10 */ T(T_LIM - 1, false);
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/* 11 */ T(T_LIM - 2, true);
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/* 12 */ T(2, true);
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/* 13 */ T(2, false);
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/* 14 */ T(T_LIM + 16, true);
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/* 15 */ T(3, false);
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/* 16 */ T(T_LIM + 16, false);
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/* 17 */ T(T_LIM * 4, true);
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/* 18 */ T(T_LIM * 4 - (T_LIM - 1), true);
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/* 19 */ T(10, false);
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/* 20 */ T(T_LIM * 4 - T_LIM, false);
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/* 21 */ T(T_LIM * 4 - (T_LIM + 1), false);
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/* 22 */ T(T_LIM * 4 - (T_LIM - 2), true);
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/* 23 */ T(T_LIM * 4 + 1 - T_LIM, false);
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/* 24 */ T(0, false);
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/* 25 */ T(REJECT_AFTER_MESSAGES, false);
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/* 26 */ T(REJECT_AFTER_MESSAGES - 1, true);
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/* 27 */ T(REJECT_AFTER_MESSAGES, false);
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/* 28 */ T(REJECT_AFTER_MESSAGES - 1, false);
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/* 29 */ T(REJECT_AFTER_MESSAGES - 2, true);
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/* 30 */ T(REJECT_AFTER_MESSAGES + 1, false);
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/* 31 */ T(REJECT_AFTER_MESSAGES + 2, false);
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/* 32 */ T(REJECT_AFTER_MESSAGES - 2, false);
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/* 33 */ T(REJECT_AFTER_MESSAGES - 3, true);
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/* 34 */ T(0, false);
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T_INIT;
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for (i = 1; i <= COUNTER_WINDOW_SIZE; ++i)
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T(i, true);
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T(0, true);
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T(0, false);
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T_INIT;
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for (i = 2; i <= COUNTER_WINDOW_SIZE + 1; ++i)
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T(i, true);
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T(1, true);
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T(0, false);
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T_INIT;
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for (i = COUNTER_WINDOW_SIZE + 1; i-- > 0;)
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T(i, true);
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T_INIT;
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for (i = COUNTER_WINDOW_SIZE + 2; i-- > 1;)
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T(i, true);
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T(0, false);
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T_INIT;
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for (i = COUNTER_WINDOW_SIZE + 1; i-- > 1;)
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T(i, true);
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T(COUNTER_WINDOW_SIZE + 1, true);
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T(0, false);
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T_INIT;
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for (i = COUNTER_WINDOW_SIZE + 1; i-- > 1;)
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T(i, true);
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T(0, true);
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T(COUNTER_WINDOW_SIZE + 1, true);
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#undef T
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#undef T_LIM
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#undef T_INIT
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if (success)
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pr_info("nonce counter self-tests: pass\n");
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kfree(counter);
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return success;
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}
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#endif
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