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path: root/src/plugins/unittest/svm_fifo_test.c
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-rw-r--r--src/plugins/unittest/svm_fifo_test.c400
1 files changed, 400 insertions, 0 deletions
diff --git a/src/plugins/unittest/svm_fifo_test.c b/src/plugins/unittest/svm_fifo_test.c
index d2afc36e0d0..7d83b105c93 100644
--- a/src/plugins/unittest/svm_fifo_test.c
+++ b/src/plugins/unittest/svm_fifo_test.c
@@ -1456,8 +1456,403 @@ cleanup:
}
svm_fifo_free (f);
+ vec_free (test_data);
+ vec_free (data_buf);
+ return 0;
+}
+
+static int
+chunk_list_len (svm_fifo_chunk_t * c)
+{
+ svm_fifo_chunk_t *it;
+ int count = 0;
+
+ if (!c)
+ return 0;
+
+ count = 1;
+ it = c->next;
+ while (it && it != c)
+ {
+ it = it->next;
+ count++;
+ }
+ return count;
+}
+
+static void
+chunk_list_free (svm_fifo_chunk_t * c, svm_fifo_chunk_t * stop)
+{
+ svm_fifo_chunk_t *it, *next;
+
+ it = c;
+ while (it && it != stop)
+ {
+ next = it->next;
+ clib_mem_free (it);
+ it = next;
+ }
+}
+
+static void
+chunk_list_splice (svm_fifo_chunk_t * a, svm_fifo_chunk_t * b)
+{
+ svm_fifo_chunk_t *it;
+
+ it = a;
+ while (it->next)
+ it = it->next;
+ it->next = b;
+}
+
+static int
+sfifo_test_fifo_shrink (vlib_main_t * vm, unformat_input_t * input)
+{
+ int __clib_unused verbose = 0, fifo_size = 101, chunk_size = 100;
+ int i, rv, test_n_bytes, diff, deq_bytes;
+ svm_fifo_chunk_t *c, *prev, *collected;
+ u8 *test_data = 0, *data_buf = 0;
+ svm_fifo_t *f;
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "verbose"))
+ verbose = 1;
+ else
+ {
+ vlib_cli_output (vm, "parse error: '%U'", format_unformat_error,
+ input);
+ return -1;
+ }
+ }
+
+ /*
+ * Init fifo with multiple chunks
+ */
+ f = fifo_prepare (fifo_size);
+ svm_fifo_init_pointers (f, 0, 0);
+
+ prev = 0;
+ for (i = 0; i < 11; i++)
+ {
+ c = clib_mem_alloc (sizeof (svm_fifo_chunk_t) + chunk_size);
+ c->length = 100;
+ c->start_byte = ~0;
+ c->next = prev;
+ prev = c;
+ }
+
+ svm_fifo_add_chunk (f, c);
+ SFIFO_TEST (f->size == 12 * chunk_size + 1, "size expected %u is %u",
+ 12 * chunk_size + 1, f->size);
+
+ /*
+ * No fifo wrap and no chunk used (one chunk)
+ */
+ rv = svm_fifo_reduce_size (f, chunk_size, 0);
+ SFIFO_TEST (rv == chunk_size, "len expected %u is %u", chunk_size, rv);
+ SFIFO_TEST (f->size == 12 * chunk_size + 1, "size expected %u is %u",
+ 12 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+
+ /* Check enqueue space to force size reduction */
+ (void) svm_fifo_max_enqueue (f);
+
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_COLLECT_CHUNKS, "collect flag should"
+ " be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_SHRINK), "shrink flag should not be"
+ " set");
+
+ collected = c = svm_fifo_collect_chunks (f);
+ rv = chunk_list_len (c);
+ SFIFO_TEST (rv == 1, "expected %u chunks got %u", 1, rv);
+ rv = chunk_list_len (f->start_chunk);
+ SFIFO_TEST (rv == 11, "expected %u chunks got %u", 11, rv);
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ /*
+ * Fifo wrap and multiple chunks used
+ */
+
+ /* Init test data and fifo */
+ test_n_bytes = f->nitems;
+ vec_validate (test_data, test_n_bytes - 1);
+ vec_validate (data_buf, vec_len (test_data));
+
+ for (i = 0; i < vec_len (test_data); i++)
+ test_data[i] = i;
+
+ svm_fifo_init_pointers (f, f->size / 2, f->size / 2);
+ for (i = 0; i < test_n_bytes; i++)
+ {
+ rv = svm_fifo_enqueue (f, sizeof (u8), &test_data[i]);
+ if (rv < 0)
+ SFIFO_TEST (0, "enqueue returned");
+ }
+
+ /* Try to reduce fifo size with fifo full */
+ rv = svm_fifo_reduce_size (f, 3.5 * chunk_size, 0);
+ SFIFO_TEST (rv == 3 * chunk_size, "len expected %u is %u", 3 * chunk_size,
+ rv);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+
+ /* Check enqueue space to try size reduction. Should not work */
+ rv = svm_fifo_max_enqueue (f);
+
+ SFIFO_TEST (rv == 0, "free space expected %u is %u", 0, rv);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ /* Dequeue byte-by-byte up to last byte on last chunk */
+ deq_bytes = f->size - f->size / 2 - 1;
+ for (i = 0; i < deq_bytes; i++)
+ {
+ (void) svm_fifo_max_enqueue (f);
+ rv = svm_fifo_dequeue (f, 1, &data_buf[i]);
+ if (rv < 0)
+ SFIFO_TEST (0, "dequeue returned");
+ }
+
+ rv = svm_fifo_max_enqueue (f);
+
+ /* We've dequeued more than 3*chunk_size so nitems should be updated */
+ SFIFO_TEST (f->nitems == 8 * chunk_size, "nitems expected %u is %u",
+ 8 * chunk_size, f->nitems);
+ /* Free space should be what was dequeued - 3 * chunk_size, which was
+ * consumed by shrinking the fifo */
+ diff = deq_bytes - 3 * chunk_size;
+ SFIFO_TEST (rv == diff, "free space expected %u is %u", diff, rv);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ /* Dequeue one more such that head goes beyond last chunk */
+ rv = svm_fifo_dequeue (f, 1, &data_buf[deq_bytes]);
+ if (rv < 0)
+ SFIFO_TEST (0, "dequeue returned");
+
+ rv = svm_fifo_max_enqueue (f);
+ SFIFO_TEST (f->nitems == 8 * chunk_size, "nitems expected %u is %u",
+ 8 * chunk_size, f->nitems);
+ SFIFO_TEST (rv == diff + 1, "free space expected %u is %u", diff + 1, rv);
+ SFIFO_TEST (f->size == 8 * chunk_size + 1, "size expected %u is %u",
+ 8 * chunk_size + 1, f->size);
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_SHRINK), "shrink flag should not be"
+ " set");
+ SFIFO_TEST (f->flags & SVM_FIFO_F_COLLECT_CHUNKS, "collect flag should"
+ " be set");
+
+ /* Dequeue the rest of the data */
+ deq_bytes += 1;
+ for (i = 0; i < test_n_bytes - deq_bytes; i++)
+ {
+ rv = svm_fifo_dequeue (f, 1, &data_buf[i + deq_bytes]);
+ if (rv < 0)
+ SFIFO_TEST (0, "dequeue returned");
+ }
+
+ rv = svm_fifo_max_enqueue (f);
+
+ SFIFO_TEST (f->size == 8 * chunk_size + 1, "size expected %u is %u",
+ 8 * chunk_size + 1, f->size);
+ SFIFO_TEST (rv == 8 * chunk_size, "free space expected %u is %u",
+ 8 * chunk_size, rv);
+
+ rv = compare_data (data_buf, test_data, 0, vec_len (test_data),
+ (u32 *) & i);
+ if (rv)
+ SFIFO_TEST (0, "[%d] dequeued %u expected %u", i, data_buf[i],
+ test_data[i]);
+
+ c = svm_fifo_collect_chunks (f);
+ rv = chunk_list_len (c);
+ SFIFO_TEST (rv == 3, "expected %u chunks got %u", 3, rv);
+ rv = chunk_list_len (f->start_chunk);
+ SFIFO_TEST (rv == 8, "expected %u chunks got %u", 8, rv);
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ /*
+ * OOO segment on chunk that should be removed
+ */
+
+ svm_fifo_add_chunk (f, c);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+
+ memset (data_buf, 0, vec_len (data_buf));
+ svm_fifo_init_pointers (f, f->size / 2, f->size / 2);
+ svm_fifo_enqueue (f, 200, test_data);
+ svm_fifo_enqueue_with_offset (f, 50, vec_len (test_data) - 250,
+ &test_data[250]);
+
+ /* Free space */
+ rv = svm_fifo_max_enqueue (f);
+ SFIFO_TEST (rv == vec_len (test_data) - 200, "free space expected %u is %u",
+ vec_len (test_data) - 200, rv);
+
+ /* Ask to reduce size */
+ rv = svm_fifo_reduce_size (f, 3.5 * chunk_size, 0);
+ SFIFO_TEST (rv == 3 * chunk_size, "len expected %u is %u", 3 * chunk_size,
+ rv);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+
+ /* Try to force size reduction but it should fail */
+ rv = svm_fifo_max_enqueue (f);
+
+ SFIFO_TEST (rv == vec_len (test_data) - 200, "free space expected %u is %u",
+ vec_len (test_data) - 200, rv);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ /* Dequeue the in order data. This should shrink nitems */
+ rv = svm_fifo_dequeue (f, 200, data_buf);
+ if (rv < 0)
+ SFIFO_TEST (0, "dequeue returned");
+
+ rv = svm_fifo_max_enqueue (f);
+ SFIFO_TEST (rv == vec_len (test_data) - 200, "free space expected %u is %u",
+ vec_len (test_data) - 200, rv);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->nitems == 11 * chunk_size - 200, "nitems expected %u is %u",
+ 11 * chunk_size - 200, f->nitems);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ /* Enqueue the missing 50 bytes. Fifo will become full */
+ rv = svm_fifo_enqueue (f, 50, &test_data[200]);
+ SFIFO_TEST (rv == vec_len (test_data) - 200, "free space expected %u is %u",
+ vec_len (test_data) - 200, rv);
+
+ rv = svm_fifo_max_enqueue (f);
+
+ SFIFO_TEST (rv == 0, "free space expected %u is %u", 0, rv);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+
+ /* Dequeue a chunk and check nitems shrink but fifo still full */
+ svm_fifo_dequeue (f, 100, &data_buf[200]);
+
+ rv = svm_fifo_max_enqueue (f);
+
+ SFIFO_TEST (rv == 0, "free space expected %u is %u", 0, rv);
+ SFIFO_TEST (f->size == 11 * chunk_size + 1, "size expected %u is %u",
+ 11 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->nitems == 11 * chunk_size - 300, "nitems expected %u is %u",
+ 11 * chunk_size - 300, f->nitems);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ /* Dequeue enough to unwrap the fifo */
+ deq_bytes = f->size - f->size / 2 - 300;
+ svm_fifo_dequeue (f, deq_bytes, &data_buf[300]);
+ rv = svm_fifo_max_enqueue (f);
+
+ /* Overall we've dequeued deq_bytes + 300, but fifo size shrunk 300 */
+ SFIFO_TEST (rv == 300 + deq_bytes - 300, "free space expected %u is %u",
+ 300 + deq_bytes - 300, rv);
+ SFIFO_TEST (f->size == 8 * chunk_size + 1, "size expected %u is %u",
+ 8 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->nitems == 8 * chunk_size, "nitems expected %u is %u",
+ 8 * chunk_size, f->nitems);
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_SHRINK), "shrink flag should not be"
+ " set");
+ SFIFO_TEST (f->flags & SVM_FIFO_F_COLLECT_CHUNKS, "collect flag should"
+ " be set");
+
+ /* Dequeue the rest */
+ svm_fifo_dequeue (f, test_n_bytes / 2, &data_buf[300 + deq_bytes]);
+ rv = compare_data (data_buf, test_data, 0, vec_len (test_data),
+ (u32 *) & i);
+ if (rv)
+ SFIFO_TEST (0, "[%d] dequeued %u expected %u", i, data_buf[i],
+ test_data[i]);
+
+ c = svm_fifo_collect_chunks (f);
+ rv = chunk_list_len (c);
+ SFIFO_TEST (rv == 3, "expected %u chunks got %u", 3, rv);
+ rv = chunk_list_len (f->start_chunk);
+ SFIFO_TEST (rv == 8, "expected %u chunks got %u", 8, rv);
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ chunk_list_splice (collected, c);
+
+ /*
+ * Remove all chunks possible
+ */
+ svm_fifo_init_pointers (f, 601, 601);
+ rv = svm_fifo_reduce_size (f, 8 * chunk_size, 1);
+ SFIFO_TEST (rv == 7 * chunk_size, "actual len expected %u is %u",
+ 7 * chunk_size, rv);
+ SFIFO_TEST (f->size == 6 * chunk_size + 1, "size expected %u is %u",
+ 6 * chunk_size + 1, f->size);
+ SFIFO_TEST (f->nitems == 1 * chunk_size, "nitems expected %u is %u",
+ 1 * chunk_size, f->nitems);
+ SFIFO_TEST (f->flags & SVM_FIFO_F_SHRINK, "shrink flag should be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+
+ rv = svm_fifo_max_enqueue (f);
+ SFIFO_TEST (rv == chunk_size, "free space expected %u is %u", chunk_size,
+ rv);
+
+ /* Force head/tail to move to first chunk */
+ svm_fifo_enqueue (f, 1, test_data);
+ svm_fifo_dequeue (f, 1, data_buf);
+ rv = svm_fifo_max_enqueue (f);
+
+ SFIFO_TEST (rv == chunk_size, "free space expected %u is %u", chunk_size,
+ rv);
+ SFIFO_TEST (f->size == chunk_size + 1, "size expected %u is %u",
+ chunk_size + 1, f->size);
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_SHRINK), "shrink flag should not be"
+ " set");
+ SFIFO_TEST (f->flags & SVM_FIFO_F_COLLECT_CHUNKS, "collect flag should"
+ " be set");
+
+ c = svm_fifo_collect_chunks (f);
+ rv = chunk_list_len (c);
+ SFIFO_TEST (rv == 7, "expected %u chunks got %u", 7, rv);
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_COLLECT_CHUNKS), "collect flag should"
+ " not be set");
+ SFIFO_TEST (!(f->flags & SVM_FIFO_F_MULTI_CHUNK), "multi-chunk flag should"
+ " not be set");
+
+ chunk_list_splice (collected, c);
+
+ /*
+ * Cleanup
+ */
+
+ chunk_list_free (f->start_chunk->next, f->start_chunk);
+ chunk_list_free (collected, 0);
+ svm_fifo_free (f);
+ vec_free (test_data);
vec_free (data_buf);
+
return 0;
}
@@ -1876,6 +2271,8 @@ svm_fifo_test (vlib_main_t * vm, unformat_input_t * input,
res = sfifo_test_fifo_replay (vm, input);
else if (unformat (input, "grow"))
res = sfifo_test_fifo_grow (vm, input);
+ else if (unformat (input, "shrink"))
+ res = sfifo_test_fifo_shrink (vm, input);
else if (unformat (input, "segment"))
res = sfifo_test_fifo_segment (vm, input);
else if (unformat (input, "all"))
@@ -1934,6 +2331,9 @@ svm_fifo_test (vlib_main_t * vm, unformat_input_t * input,
if ((res = sfifo_test_fifo_grow (vm, input)))
goto done;
+ if ((res = sfifo_test_fifo_shrink (vm, input)))
+ goto done;
+
str = "all";
unformat_init_cstring (input, str);
if ((res = sfifo_test_fifo_segment (vm, input)))