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path: root/drivers/net/wireguard/selftest/counter.c
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Diffstat (limited to 'drivers/net/wireguard/selftest/counter.c')
-rw-r--r--drivers/net/wireguard/selftest/counter.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/net/wireguard/selftest/counter.c b/drivers/net/wireguard/selftest/counter.c
new file mode 100644
index 000000000000..f4fbb9072ed7
--- /dev/null
+++ b/drivers/net/wireguard/selftest/counter.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#ifdef DEBUG
+bool __init wg_packet_counter_selftest(void)
+{
+ unsigned int test_num = 0, i;
+ union noise_counter counter;
+ bool success = true;
+
+#define T_INIT do { \
+ memset(&counter, 0, sizeof(union noise_counter)); \
+ spin_lock_init(&counter.receive.lock); \
+ } while (0)
+#define T_LIM (COUNTER_WINDOW_SIZE + 1)
+#define T(n, v) do { \
+ ++test_num; \
+ if (counter_validate(&counter, n) != (v)) { \
+ pr_err("nonce counter self-test %u: FAIL\n", \
+ test_num); \
+ success = false; \
+ } \
+ } while (0)
+
+ T_INIT;
+ /* 1 */ T(0, true);
+ /* 2 */ T(1, true);
+ /* 3 */ T(1, false);
+ /* 4 */ T(9, true);
+ /* 5 */ T(8, true);
+ /* 6 */ T(7, true);
+ /* 7 */ T(7, false);
+ /* 8 */ T(T_LIM, true);
+ /* 9 */ T(T_LIM - 1, true);
+ /* 10 */ T(T_LIM - 1, false);
+ /* 11 */ T(T_LIM - 2, true);
+ /* 12 */ T(2, true);
+ /* 13 */ T(2, false);
+ /* 14 */ T(T_LIM + 16, true);
+ /* 15 */ T(3, false);
+ /* 16 */ T(T_LIM + 16, false);
+ /* 17 */ T(T_LIM * 4, true);
+ /* 18 */ T(T_LIM * 4 - (T_LIM - 1), true);
+ /* 19 */ T(10, false);
+ /* 20 */ T(T_LIM * 4 - T_LIM, false);
+ /* 21 */ T(T_LIM * 4 - (T_LIM + 1), false);
+ /* 22 */ T(T_LIM * 4 - (T_LIM - 2), true);
+ /* 23 */ T(T_LIM * 4 + 1 - T_LIM, false);
+ /* 24 */ T(0, false);
+ /* 25 */ T(REJECT_AFTER_MESSAGES, false);
+ /* 26 */ T(REJECT_AFTER_MESSAGES - 1, true);
+ /* 27 */ T(REJECT_AFTER_MESSAGES, false);
+ /* 28 */ T(REJECT_AFTER_MESSAGES - 1, false);
+ /* 29 */ T(REJECT_AFTER_MESSAGES - 2, true);
+ /* 30 */ T(REJECT_AFTER_MESSAGES + 1, false);
+ /* 31 */ T(REJECT_AFTER_MESSAGES + 2, false);
+ /* 32 */ T(REJECT_AFTER_MESSAGES - 2, false);
+ /* 33 */ T(REJECT_AFTER_MESSAGES - 3, true);
+ /* 34 */ T(0, false);
+
+ T_INIT;
+ for (i = 1; i <= COUNTER_WINDOW_SIZE; ++i)
+ T(i, true);
+ T(0, true);
+ T(0, false);
+
+ T_INIT;
+ for (i = 2; i <= COUNTER_WINDOW_SIZE + 1; ++i)
+ T(i, true);
+ T(1, true);
+ T(0, false);
+
+ T_INIT;
+ for (i = COUNTER_WINDOW_SIZE + 1; i-- > 0;)
+ T(i, true);
+
+ T_INIT;
+ for (i = COUNTER_WINDOW_SIZE + 2; i-- > 1;)
+ T(i, true);
+ T(0, false);
+
+ T_INIT;
+ for (i = COUNTER_WINDOW_SIZE + 1; i-- > 1;)
+ T(i, true);
+ T(COUNTER_WINDOW_SIZE + 1, true);
+ T(0, false);
+
+ T_INIT;
+ for (i = COUNTER_WINDOW_SIZE + 1; i-- > 1;)
+ T(i, true);
+ T(0, true);
+ T(COUNTER_WINDOW_SIZE + 1, true);
+
+#undef T
+#undef T_LIM
+#undef T_INIT
+
+ if (success)
+ pr_info("nonce counter self-tests: pass\n");
+ return success;
+}
+#endif