[dpdk-dev] [PATCH v1 1/2] test/compress: add out of space test

[Marko Kovacevic <marko.kovacevic@intel.com>]

From: "Kovacevic, Marko" <marko.kovacevic@intel.com>

This patch adds new out of space testcase to check
that the destination mbuf is smaller than required for
the output of compression to ensure the driver doesn't crash
and returns the valid error case.

Signed-off-by: Marko Kovacevic <marko.kovacevic@intel.com>
---
 test/test/test_compressdev.c | 112 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 108 insertions(+), 4 deletions(-)

diff --git a/test/test/test_compressdev.c b/test/test/test_compressdev.c
index 4ea13f4..63b1ba9 100644
--- a/test/test/test_compressdev.c
+++ b/test/test/test_compressdev.c
@@ -41,6 +41,9 @@
 #define ZLIB_TRAILER_SIZE 4
 #define GZIP_HEADER_SIZE 10
 #define GZIP_TRAILER_SIZE 8
+#define OUT_OF_SPACE_BUF 1
+
+int out_of_space;
 
 const char *
 huffman_type_strings[] = {
@@ -727,8 +730,9 @@ test_deflate_comp_decomp(const char * const test_bufs[],
 
 	if (sgl) {
 		for (i = 0; i < num_bufs; i++) {
-			data_size = strlen(test_bufs[i]) *
-				COMPRESS_BUF_SIZE_RATIO;
+			out_of_space ? data_size = OUT_OF_SPACE_BUF :
+					(data_size = strlen(test_bufs[i]) *
+					COMPRESS_BUF_SIZE_RATIO);
 			if (prepare_sgl_bufs(NULL, comp_bufs[i],
 					data_size,
 					ts_params->small_mbuf_pool,
@@ -739,8 +743,9 @@ test_deflate_comp_decomp(const char * const test_bufs[],
 
 	} else {
 		for (i = 0; i < num_bufs; i++) {
-			data_size = strlen(test_bufs[i]) *
-				COMPRESS_BUF_SIZE_RATIO;
+			out_of_space ? data_size = OUT_OF_SPACE_BUF :
+					(data_size = strlen(test_bufs[i]) *
+					COMPRESS_BUF_SIZE_RATIO);
 			rte_pktmbuf_append(comp_bufs[i], data_size);
 		}
 	}
@@ -1663,6 +1668,103 @@ test_compressdev_deflate_stateless_checksum(void)
 	return ret;
 }
 
+static int
+test_compressdev_out_of_space_buffer(void)
+{
+	struct comp_testsuite_params *ts_params = &testsuite_params;
+	const char *test_buffer;
+	int ret;
+	uint16_t i = 0;
+	const struct rte_compressdev_capabilities *capab;
+	out_of_space = 1;
+
+	capab = rte_compressdev_capability_get(0, RTE_COMP_ALGO_DEFLATE);
+	TEST_ASSERT(capab != NULL, "Failed to retrieve device capabilities");
+
+	if ((capab->comp_feature_flags & RTE_COMP_FF_HUFFMAN_FIXED) == 0)
+		return -ENOTSUP;
+
+	struct rte_comp_xform *compress_xform =
+			rte_malloc(NULL, sizeof(struct rte_comp_xform), 0);
+
+	if (compress_xform == NULL) {
+		RTE_LOG(ERR, USER1,
+			"Compress xform could not be created\n");
+		ret = TEST_FAILED;
+		goto exit;
+	}
+
+	test_buffer = compress_test_bufs[i];
+
+	if (capab->comp_feature_flags & RTE_COMP_FF_OOP_SGL_IN_SGL_OUT) {
+
+		/* Compress with compressdev, decompress with Zlib */
+		if (test_deflate_comp_decomp(&test_buffer, 1,
+				&i,
+				&ts_params->def_comp_xform,
+				&ts_params->def_decomp_xform,
+				1,
+				RTE_COMP_OP_STATELESS,
+				1,
+				ZLIB_DECOMPRESS,
+				0) == 0) {
+			ret = TEST_FAILED;
+			goto exit;
+
+		}
+
+		/* Compress with Zlib, decompress with compressdev */
+		if (test_deflate_comp_decomp(&test_buffer, 1,
+				&i,
+				&ts_params->def_comp_xform,
+				&ts_params->def_decomp_xform,
+				1,
+				RTE_COMP_OP_STATELESS,
+				0,
+				ZLIB_COMPRESS,
+				0) == 0) {
+			ret = TEST_FAILED;
+			goto exit;
+		}
+	}
+
+	/* Compress with compressdev, decompress with Zlib */
+	if (test_deflate_comp_decomp(&test_buffer, 1,
+			&i,
+			&ts_params->def_comp_xform,
+			&ts_params->def_decomp_xform,
+			1,
+			RTE_COMP_OP_STATELESS,
+			0,
+			ZLIB_DECOMPRESS,
+			0) == 0) {
+		ret = TEST_FAILED;
+		goto exit;
+
+	}
+
+	/* Compress with Zlib, decompress with compressdev */
+	if (test_deflate_comp_decomp(&test_buffer, 1,
+			&i,
+			&ts_params->def_comp_xform,
+			&ts_params->def_decomp_xform,
+			1,
+			RTE_COMP_OP_STATELESS,
+			0,
+			ZLIB_COMPRESS,
+			0) == 0) {
+		ret = TEST_FAILED;
+		goto exit;
+	}
+
+	ret  = TEST_SUCCESS;
+	out_of_space = 0;
+
+exit:
+	rte_free(compress_xform);
+	return ret;
+}
+
 static struct unit_test_suite compressdev_testsuite  = {
 	.suite_name = "compressdev unit test suite",
 	.setup = testsuite_setup,
@@ -1684,6 +1786,8 @@ static struct unit_test_suite compressdev_testsuite  = {
 			test_compressdev_deflate_stateless_sgl),
 		TEST_CASE_ST(generic_ut_setup, generic_ut_teardown,
 			test_compressdev_deflate_stateless_checksum),
+		TEST_CASE_ST(generic_ut_setup, generic_ut_teardown,
+			test_compressdev_out_of_space_buffer),
 		TEST_CASES_END() /**< NULL terminate unit test array */
 	}
 };
-- 
2.9.5