[PATCH v2 1/3] eal: add missing parameter check to rte_eal_alarm_set on Windows

[Stephen Hemminger <stephen@networkplumber.org>]

Both Linux and FreeBSD, check parameters to rte_eal_alarm_set,
but Windows missed this. And the test was "fixed" instead.

This reverts commit a089d320338d708f5b7126dab5fd6861c82e6347.

Windows EAL should have been fixed rather than papering over
the bug.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 app/test/test_alarm.c       | 4 ----
 lib/eal/windows/eal_alarm.c | 7 +++++++
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/app/test/test_alarm.c b/app/test/test_alarm.c
index 70e97a3109..b4034339b8 100644
--- a/app/test/test_alarm.c
+++ b/app/test/test_alarm.c
@@ -10,7 +10,6 @@
 
 #include "test.h"
 
-#ifndef RTE_EXEC_ENV_WINDOWS
 static volatile int flag;
 
 static void
@@ -19,7 +18,6 @@ test_alarm_callback(void *cb_arg)
 	flag = 1;
 	printf("Callback setting flag - OK. [cb_arg = %p]\n", cb_arg);
 }
-#endif
 
 static int
 test_alarm(void)
@@ -29,7 +27,6 @@ test_alarm(void)
 	return 0;
 #endif
 
-#ifndef RTE_EXEC_ENV_WINDOWS
 	/* check if it will fail to set alarm with wrong us value */
 	printf("check if it will fail to set alarm with wrong ms values\n");
 	if (rte_eal_alarm_set(0, test_alarm_callback,
@@ -42,7 +39,6 @@ test_alarm(void)
 		printf("should not be successful with (UINT64_MAX-1) us value\n");
 		return -1;
 	}
-#endif
 
 	/* check if it will fail to set alarm with null callback parameter */
 	printf("check if it will fail to set alarm with null callback parameter\n");
diff --git a/lib/eal/windows/eal_alarm.c b/lib/eal/windows/eal_alarm.c
index 052af4b21b..09a02a1cbf 100644
--- a/lib/eal/windows/eal_alarm.c
+++ b/lib/eal/windows/eal_alarm.c
@@ -92,6 +92,13 @@ rte_eal_alarm_set(uint64_t us, rte_eal_alarm_callback cb_fn, void *cb_arg)
 	LARGE_INTEGER deadline;
 	int ret;
 
+	/* Check parameters, including that us won't cause a uint64_t overflow */
+	if (us < 1 || us > (UINT64_MAX - US_PER_S)) {
+		EAL_LOG(ERR, "Invalid alarm interval");
+		ret = -EINVAL;
+		goto exit;
+	}
+
 	if (cb_fn == NULL) {
 		EAL_LOG(ERR, "NULL callback");
 		ret = -EINVAL;
-- 
2.43.0