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Diffstat (limited to 'src/plugins/unittest/svm_fifo_test.c')
-rw-r--r--src/plugins/unittest/svm_fifo_test.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/src/plugins/unittest/svm_fifo_test.c b/src/plugins/unittest/svm_fifo_test.c
index a3f88d35b9c..a223e132d3d 100644
--- a/src/plugins/unittest/svm_fifo_test.c
+++ b/src/plugins/unittest/svm_fifo_test.c
@@ -2536,6 +2536,14 @@ sfifo_test_fifo_segment_mempig (int verbose)
}
static int
+approx_leq (uword a, uword b, u32 margin)
+{
+ if (a - margin <= b && b <= a)
+ return 1;
+ return 0;
+}
+
+static int
sfifo_test_fifo_segment_prealloc (int verbose)
{
fifo_segment_create_args_t _a, *a = &_a;
@@ -2568,8 +2576,10 @@ sfifo_test_fifo_segment_prealloc (int verbose)
SFIFO_TEST (rv == 50, "prealloc chunks expected %u is %u", 50, rv);
rv = fifo_segment_free_bytes (fs);
free_space -= (sizeof (svm_fifo_chunk_t) + 4096) * 50;
- SFIFO_TEST (rv == free_space, "free space expected %u is %u", free_space,
- rv);
+ /* Memory alloc alignment accounts for the difference */
+ SFIFO_TEST (approx_leq (free_space, rv, 16), "free space expected %u is %u",
+ free_space, rv);
+ free_space = rv;
rv = fifo_segment_fl_chunk_bytes (fs);
SFIFO_TEST (rv == 4096 * 50, "chunk free space expected %u is %u",
4096 * 50, rv);
@@ -2580,10 +2590,11 @@ sfifo_test_fifo_segment_prealloc (int verbose)
SFIFO_TEST (rv == 50, "prealloc fifo hdrs expected %u is %u", 50, rv);
rv = fifo_segment_free_bytes (fs);
free_space -= sizeof (svm_fifo_t) * 50;
- SFIFO_TEST (rv == free_space, "free space expected %u is %u", free_space,
- rv);
+ /* Memory alloc alignment accounts for the difference */
+ SFIFO_TEST (approx_leq (free_space, rv, 16), "free space expected %u is %u",
+ free_space, rv);
+ free_space = rv;
- fifo_segment_update_free_bytes (fs);
rv = fifo_segment_free_bytes (fs);
SFIFO_TEST (clib_abs (rv - (int) free_space) < 512,
"free space expected %u is %u", free_space, rv);
@@ -2606,7 +2617,6 @@ sfifo_test_fifo_segment_prealloc (int verbose)
/*
* Multiple preallocs that consume the remaining space
*/
- fifo_segment_update_free_bytes (fs);
free_space = fifo_segment_free_bytes (fs);
pair_mem = 2 * (4096 + sizeof (*f) + sizeof (svm_fifo_chunk_t));
max_pairs = pairs_req = (free_space / pair_mem) - 1;
@@ -2616,7 +2626,6 @@ sfifo_test_fifo_segment_prealloc (int verbose)
SFIFO_TEST (rv == max_pairs * 2, "prealloc chunks expected %u is %u",
max_pairs * 2, rv);
- fifo_segment_update_free_bytes (fs);
rv = fifo_segment_free_bytes (fs);
SFIFO_TEST (rv < 2 * pair_mem, "free bytes %u less than %u", rv,
2 * pair_mem);