[dpdk-dev] [PATCH v3 2/6] baseband/turbo_sw: add support for CRC16

[Nicolas Chautru]

This is to support the case for operation
where CRC16 is to be appended or checked.

Signed-off-by: Nicolas Chautru <nicolas.chau...@intel.com>
---
 doc/guides/rel_notes/release_21_11.rst           |  3 +++
 drivers/baseband/turbo_sw/bbdev_turbo_software.c | 16 ++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/doc/guides/rel_notes/release_21_11.rst 
b/doc/guides/rel_notes/release_21_11.rst
index 69dd518..8ca59b7 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -55,6 +55,9 @@ New Features
      Also, make sure to start the actual text at the margin.
      =======================================================
 
+* **Updated the turbo_sw bbdev PMD.**
+
+  Added support for more comprehensive CRC options.
 
 Removed Items
 -------------
diff --git a/drivers/baseband/turbo_sw/bbdev_turbo_software.c 
b/drivers/baseband/turbo_sw/bbdev_turbo_software.c
index 77e9a2e..e1db2bf 100644
--- a/drivers/baseband/turbo_sw/bbdev_turbo_software.c
+++ b/drivers/baseband/turbo_sw/bbdev_turbo_software.c
@@ -199,6 +199,7 @@ struct turbo_sw_queue {
                        .cap.ldpc_enc = {
                                .capability_flags =
                                                RTE_BBDEV_LDPC_RATE_MATCH |
+                                               RTE_BBDEV_LDPC_CRC_16_ATTACH |
                                                RTE_BBDEV_LDPC_CRC_24A_ATTACH |
                                                RTE_BBDEV_LDPC_CRC_24B_ATTACH,
                                .num_buffers_src =
@@ -211,6 +212,7 @@ struct turbo_sw_queue {
                .type   = RTE_BBDEV_OP_LDPC_DEC,
                .cap.ldpc_dec = {
                        .capability_flags =
+                                       RTE_BBDEV_LDPC_CRC_TYPE_16_CHECK |
                                        RTE_BBDEV_LDPC_CRC_TYPE_24B_CHECK |
                                        RTE_BBDEV_LDPC_CRC_TYPE_24A_CHECK |
                                        RTE_BBDEV_LDPC_CRC_TYPE_24B_DROP |
@@ -880,6 +882,12 @@ struct turbo_sw_queue {
                crc_req.len = in_length_in_bits - 24;
                crc_resp.data = q->enc_in;
                bblib_lte_crc24b_gen(&crc_req, &crc_resp);
+       } else if (enc->op_flags & RTE_BBDEV_LDPC_CRC_16_ATTACH) {
+               rte_memcpy(q->enc_in, in, in_length_in_bytes - 2);
+               crc_req.data = in;
+               crc_req.len = in_length_in_bits - 16;
+               crc_resp.data = q->enc_in;
+               bblib_lte_crc16_gen(&crc_req, &crc_resp);
        } else
                rte_memcpy(q->enc_in, in, in_length_in_bytes);
 
@@ -1491,6 +1499,14 @@ struct turbo_sw_queue {
                        bblib_lte_crc24a_check(&crc_req, &crc_resp);
                if (!crc_resp.check_passed)
                        op->status |= 1 << RTE_BBDEV_CRC_ERROR;
+       } else if (check_bit(dec->op_flags, RTE_BBDEV_LDPC_CRC_TYPE_16_CHECK)) {
+               crc_req.data = adapter_input;
+               crc_req.len  = K - dec->n_filler - 16;
+               crc_resp.check_passed = false;
+               crc_resp.data = adapter_input;
+               bblib_lte_crc16_check(&crc_req, &crc_resp);
+               if (!crc_resp.check_passed)
+                       op->status |= 1 << RTE_BBDEV_CRC_ERROR;
        }
 
 #ifdef RTE_BBDEV_OFFLOAD_COST
-- 
1.8.3.1