[dpdk-dev] [PATCH] compress/isal: add appropriate flag on overflow

["Cel, TomaszX" <tomaszx.cel@intel.com>]

Hi Lee,

> This patch will change the operation status when ISA-L returns because of a
> recoverable out of space error, rather than a just generic fail.
> 
> Signed-off-by: Lee Daly <lee.daly@intel.com>
> ---
>  drivers/compress/isal/isal_compress_pmd.c | 20 ++++++++++++++------
>  1 file changed, 14 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/compress/isal/isal_compress_pmd.c
> b/drivers/compress/isal/isal_compress_pmd.c
> index 4748238..19c4d70 100644
> --- a/drivers/compress/isal/isal_compress_pmd.c
> +++ b/drivers/compress/isal/isal_compress_pmd.c
> @@ -348,12 +348,6 @@ chained_mbuf_decompression(struct rte_comp_op
> *op, struct isal_comp_qp *qp)
> 
>  		ret = isal_inflate(qp->state);
> 
> -		if (ret != ISAL_DECOMP_OK) {
> -			ISAL_PMD_LOG(ERR, "Decompression operation
> failed\n");
> -			op->status = RTE_COMP_OP_STATUS_ERROR;
> -			return ret;
> -		}
> -
>  		/* Check for first segment, offset needs to be accounted for
> */
>  		if (remaining_data == op->src.length) {
>  			consumed_data = src->data_len -
> src_remaining_offset; @@ -374,6 +368,20 @@
> chained_mbuf_decompression(struct rte_comp_op *op, struct
> isal_comp_qp *qp)
>  			}
>  		}
> 
> +		if (ret == ISAL_OUT_OVERFLOW) {
> +			ISAL_PMD_LOG(ERR, "Decompression operation ran
> "
> +				"out of space, but can be recovered.\n%d
> bytes "
> +				"consumed\t%d bytes produced\n",
> +				consumed_data, qp->state->total_out);
> +				op->status =
> +
> 	RTE_COMP_OP_STATUS_OUT_OF_SPACE_RECOVERABLE;
> +			return ret;
> +		} else if (ret < 0) {
> +			ISAL_PMD_LOG(ERR, "Decompression operation
> failed\n");
> +			op->status = RTE_COMP_OP_STATUS_ERROR;
> +			return ret;
> +		}
> +
>  		if (qp->state->avail_out == 0 &&
>  				qp->state->block_state !=
> ISAL_BLOCK_FINISH) {
>  			if (dst->next != NULL) {
> --

Tested-by:  Tomasz Cel <tomaszx.cel@intel.com>