[dpdk-dev] [PATCH v8 8/8] app/bbdev: handle endianness of test data

[nipun.gupta at nxp.com]

From: Nipun Gupta <nipun.gupta at nxp.com>

With data input, output and harq also supported in big
endian format, this patch updates the testbbdev application
to handle the endianness conversion as directed by the
the driver being used.

If the driver supports big endian data processing, conversion
from little endian to big is handled by the testbbdev application.

Signed-off-by: Nipun Gupta <nipun.gupta at nxp.com>
---
 app/test-bbdev/test_bbdev_perf.c | 43 ++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/app/test-bbdev/test_bbdev_perf.c b/app/test-bbdev/test_bbdev_perf.c
index 469597b8b3..597c443596 100644
--- a/app/test-bbdev/test_bbdev_perf.c
+++ b/app/test-bbdev/test_bbdev_perf.c
@@ -227,6 +227,45 @@ clear_soft_out_cap(uint32_t *op_flags)
 	*op_flags &= ~RTE_BBDEV_TURBO_NEG_LLR_1_BIT_SOFT_OUT;
 }
 
+/* This API is to convert all the test vector op data entries
+ * to big endian format. It is used when the device supports
+ * the input in the big endian format.
+ */
+static inline void
+convert_op_data_to_be(void)
+{
+	struct op_data_entries *op;
+	enum op_data_type type;
+	uint8_t nb_segs, *rem_data, temp;
+	uint32_t *data, len;
+	int complete, rem, i, j;
+
+	for (type = DATA_INPUT; type < DATA_NUM_TYPES; ++type) {
+		nb_segs = test_vector.entries[DATA_INPUT].nb_segments;
+		op = &test_vector.entries[type];
+
+		/* Invert byte endianness for all the segments */
+		for (i = 0; i < nb_segs; ++i) {
+			len = op->segments[i].length;
+			data = op->segments[i].addr;
+
+			/* Swap complete u32 bytes */
+			complete = len / 4;
+			for (j = 0; j < complete; j++)
+				data[j] = rte_bswap32(data[j]);
+
+			/* Swap any remaining bytes */
+			rem = len % 4;
+			rem_data = (uint8_t *)&data[j];
+			for (j = 0; j < rem/2; j++) {
+				temp = rem_data[j];
+				rem_data[j] = rem_data[rem - j - 1];
+				rem_data[rem - j - 1] = temp;
+			}
+		}
+	}
+}
+
 static int
 check_dev_cap(const struct rte_bbdev_info *dev_info)
 {
@@ -234,6 +273,7 @@ check_dev_cap(const struct rte_bbdev_info *dev_info)
 	unsigned int nb_inputs, nb_soft_outputs, nb_hard_outputs,
 		nb_harq_inputs, nb_harq_outputs;
 	const struct rte_bbdev_op_cap *op_cap = dev_info->drv.capabilities;
+	uint8_t dev_be_input = dev_info->drv.support_be_data;
 
 	nb_inputs = test_vector.entries[DATA_INPUT].nb_segments;
 	nb_soft_outputs = test_vector.entries[DATA_SOFT_OUTPUT].nb_segments;
@@ -245,6 +285,9 @@ check_dev_cap(const struct rte_bbdev_info *dev_info)
 		if (op_cap->type != test_vector.op_type)
 			continue;
 
+		if (dev_be_input)
+			convert_op_data_to_be();
+
 		if (op_cap->type == RTE_BBDEV_OP_TURBO_DEC) {
 			const struct rte_bbdev_op_cap_turbo_dec *cap =
 					&op_cap->cap.turbo_dec;
-- 
2.17.1