diff mbox series

[v3,4/6] baseband/acc100: add support for 4G CRC drop

Message ID 1631063741-28631-5-git-send-email-nicolas.chautru@intel.com (mailing list archive)
State Accepted, archived
Delegated to: akhil goyal
Headers show
Series bbdev update related to CRC usage | expand

Checks

Context Check Description
ci/checkpatch warning coding style issues

Commit Message

Nicolas Chautru Sept. 8, 2021, 1:15 a.m. UTC 
This implements in PMD the option to drop the CB CRC
after 4G decoding to help transport block concatenation.

Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
---
 doc/guides/bbdevs/acc100.rst             |  1 +
 doc/guides/rel_notes/release_21_11.rst   |  4 ++++
 drivers/baseband/acc100/rte_acc100_pmd.c | 12 +++++++++---
 3 files changed, 14 insertions(+), 3 deletions(-)

Comments

Tom Rix Sept. 12, 2021, 12:42 p.m. UTC | #1 
On 9/7/21 6:15 PM, Nicolas Chautru wrote:
> This implements in PMD the option to drop the CB CRC
> after 4G decoding to help transport block concatenation.
>
> Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
> ---
>   doc/guides/bbdevs/acc100.rst             |  1 +
>   doc/guides/rel_notes/release_21_11.rst   |  4 ++++
>   drivers/baseband/acc100/rte_acc100_pmd.c | 12 +++++++++---
>   3 files changed, 14 insertions(+), 3 deletions(-)
>
> diff --git a/doc/guides/bbdevs/acc100.rst b/doc/guides/bbdevs/acc100.rst
> index ff0fa4b..9fff6ab 100644
> --- a/doc/guides/bbdevs/acc100.rst
> +++ b/doc/guides/bbdevs/acc100.rst
> @@ -58,6 +58,7 @@ ACC100 5G/4G FEC PMD supports the following BBDEV capabilities:
>      - ``RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN`` :  set if negative LLR encoder i/p is supported
>      - ``RTE_BBDEV_TURBO_POS_LLR_1_BIT_IN`` :  set if positive LLR encoder i/p is supported
>      - ``RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP`` :  keep CRC24B bits appended while decoding
> +   - ``RTE_BBDEV_TURBO_DEC_CRC_24B_DROP`` : option to drop the code block CRC after decoding
>      - ``RTE_BBDEV_TURBO_EARLY_TERMINATION`` :  set early termination feature
>      - ``RTE_BBDEV_TURBO_DEC_SCATTER_GATHER`` :  supports scatter-gather for input/output data
>      - ``RTE_BBDEV_TURBO_HALF_ITERATION_EVEN`` :  set half iteration granularity
> diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
> index 8ca59b7..f7843bc 100644
> --- a/doc/guides/rel_notes/release_21_11.rst
> +++ b/doc/guides/rel_notes/release_21_11.rst
> @@ -59,6 +59,10 @@ New Features
>   
>     Added support for more comprehensive CRC options.
>   
> +* **Updated the ACC100 bbdev PMD.**
> +
> +  Added support for more comprehensive CRC options.
> +
>   Removed Items
>   -------------
>   
> diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c b/drivers/baseband/acc100/rte_acc100_pmd.c
> index 68ba523..2e9ce92 100644
> --- a/drivers/baseband/acc100/rte_acc100_pmd.c
> +++ b/drivers/baseband/acc100/rte_acc100_pmd.c
> @@ -980,6 +980,7 @@
>   					RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN |
>   					RTE_BBDEV_TURBO_MAP_DEC |
>   					RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP |
> +					RTE_BBDEV_TURBO_DEC_CRC_24B_DROP |
>   					RTE_BBDEV_TURBO_DEC_SCATTER_GATHER,
>   				.max_llr_modulus = INT8_MAX,
>   				.num_buffers_src =
> @@ -1708,8 +1709,12 @@
>   	}
>   
>   	if ((op->turbo_dec.code_block_mode == RTE_BBDEV_TRANSPORT_BLOCK)
> -		&& !check_bit(op->turbo_dec.op_flags,
> -		RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP))
> +			&& !check_bit(op->turbo_dec.op_flags,
> +			RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP))
> +		crc24_overlap = 24;
> +	if ((op->turbo_dec.code_block_mode == RTE_BBDEV_CODE_BLOCK)
> +			&& check_bit(op->turbo_dec.op_flags,
> +			RTE_BBDEV_TURBO_DEC_CRC_24B_DROP))
>   		crc24_overlap = 24;

ok if this isn't combined.

the bug moved to its own patch.

Looks good.

Reviewed-by: Tom Rix <trix@redhat.com>

>   
>   	/* Calculates circular buffer size.
> @@ -1744,7 +1749,8 @@
>   
>   	next_triplet = acc100_dma_fill_blk_type_out(
>   			desc, h_output, *h_out_offset,
> -			k >> 3, next_triplet, ACC100_DMA_BLKID_OUT_HARD);
> +			k >> 3, next_triplet,
> +			ACC100_DMA_BLKID_OUT_HARD);
>   	if (unlikely(next_triplet < 0)) {
>   		rte_bbdev_log(ERR,
>   				"Mismatch between data to process and mbuf data length in bbdev_op: %p",
diff mbox series

Patch

diff --git a/doc/guides/bbdevs/acc100.rst b/doc/guides/bbdevs/acc100.rst
index ff0fa4b..9fff6ab 100644
--- a/doc/guides/bbdevs/acc100.rst
+++ b/doc/guides/bbdevs/acc100.rst
@@ -58,6 +58,7 @@  ACC100 5G/4G FEC PMD supports the following BBDEV capabilities:
    - ``RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN`` :  set if negative LLR encoder i/p is supported
    - ``RTE_BBDEV_TURBO_POS_LLR_1_BIT_IN`` :  set if positive LLR encoder i/p is supported
    - ``RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP`` :  keep CRC24B bits appended while decoding
+   - ``RTE_BBDEV_TURBO_DEC_CRC_24B_DROP`` : option to drop the code block CRC after decoding
    - ``RTE_BBDEV_TURBO_EARLY_TERMINATION`` :  set early termination feature
    - ``RTE_BBDEV_TURBO_DEC_SCATTER_GATHER`` :  supports scatter-gather for input/output data
    - ``RTE_BBDEV_TURBO_HALF_ITERATION_EVEN`` :  set half iteration granularity
diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 8ca59b7..f7843bc 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -59,6 +59,10 @@  New Features
 
   Added support for more comprehensive CRC options.
 
+* **Updated the ACC100 bbdev PMD.**
+
+  Added support for more comprehensive CRC options.
+
 Removed Items
 -------------
 
diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c b/drivers/baseband/acc100/rte_acc100_pmd.c
index 68ba523..2e9ce92 100644
--- a/drivers/baseband/acc100/rte_acc100_pmd.c
+++ b/drivers/baseband/acc100/rte_acc100_pmd.c
@@ -980,6 +980,7 @@ 
 					RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN |
 					RTE_BBDEV_TURBO_MAP_DEC |
 					RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP |
+					RTE_BBDEV_TURBO_DEC_CRC_24B_DROP |
 					RTE_BBDEV_TURBO_DEC_SCATTER_GATHER,
 				.max_llr_modulus = INT8_MAX,
 				.num_buffers_src =
@@ -1708,8 +1709,12 @@ 
 	}
 
 	if ((op->turbo_dec.code_block_mode == RTE_BBDEV_TRANSPORT_BLOCK)
-		&& !check_bit(op->turbo_dec.op_flags,
-		RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP))
+			&& !check_bit(op->turbo_dec.op_flags,
+			RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP))
+		crc24_overlap = 24;
+	if ((op->turbo_dec.code_block_mode == RTE_BBDEV_CODE_BLOCK)
+			&& check_bit(op->turbo_dec.op_flags,
+			RTE_BBDEV_TURBO_DEC_CRC_24B_DROP))
 		crc24_overlap = 24;
 
 	/* Calculates circular buffer size.
@@ -1744,7 +1749,8 @@ 
 
 	next_triplet = acc100_dma_fill_blk_type_out(
 			desc, h_output, *h_out_offset,
-			k >> 3, next_triplet, ACC100_DMA_BLKID_OUT_HARD);
+			k >> 3, next_triplet,
+			ACC100_DMA_BLKID_OUT_HARD);
 	if (unlikely(next_triplet < 0)) {
 		rte_bbdev_log(ERR,
 				"Mismatch between data to process and mbuf data length in bbdev_op: %p",