[dpdk-dev] [PATCH v6 8/9] 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 | 62 ++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/app/test-bbdev/test_bbdev_perf.c b/app/test-bbdev/test_bbdev_perf.c
index 469597b8b3..a0f565ee3f 100644
--- a/app/test-bbdev/test_bbdev_perf.c
+++ b/app/test-bbdev/test_bbdev_perf.c
@@ -227,6 +227,64 @@ clear_soft_out_cap(uint32_t *op_flags)
 	*op_flags &= ~RTE_BBDEV_TURBO_NEG_LLR_1_BIT_SOFT_OUT;
 }
 
+static inline void
+reverse_op(struct op_data_entries *op)
+{
+	uint8_t nb_segs = op->nb_segments;
+	uint32_t *data, len;
+	int complete, rem, i, j;
+	uint8_t *rem_data, temp;
+
+	/* Validate each mbuf segment length */
+	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 data for last seg */
+		if (i == (nb_segs - 1)) {
+			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 inline void
+reverse_all_ops(void)
+{
+	unsigned int nb_inputs, nb_soft_outputs, nb_hard_outputs,
+		nb_harq_inputs, nb_harq_outputs;
+
+	nb_inputs = test_vector.entries[DATA_INPUT].nb_segments;
+	if (nb_inputs)
+		reverse_op(&test_vector.entries[DATA_INPUT]);
+
+	nb_soft_outputs = test_vector.entries[DATA_SOFT_OUTPUT].nb_segments;
+	if (nb_soft_outputs)
+		reverse_op(&test_vector.entries[DATA_SOFT_OUTPUT]);
+
+	nb_hard_outputs = test_vector.entries[DATA_HARD_OUTPUT].nb_segments;
+	if (nb_hard_outputs)
+		reverse_op(&test_vector.entries[DATA_HARD_OUTPUT]);
+
+	nb_harq_inputs  = test_vector.entries[DATA_HARQ_INPUT].nb_segments;
+	if (nb_harq_inputs)
+		reverse_op(&test_vector.entries[DATA_HARQ_INPUT]);
+
+	nb_harq_outputs = test_vector.entries[DATA_HARQ_OUTPUT].nb_segments;
+	if (nb_harq_outputs)
+		reverse_op(&test_vector.entries[DATA_HARQ_OUTPUT]);
+}
+
 static int
 check_dev_cap(const struct rte_bbdev_info *dev_info)
 {
@@ -234,6 +292,7 @@ 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 be_data = 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 +304,9 @@ check_dev_cap(const struct rte_bbdev_info *dev_info)
 		if (op_cap->type != test_vector.op_type)
 			continue;
 
+		if (be_data)
+			reverse_all_ops();
+
 		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