Re: [dpdk-stable] [PATCH] crypto/qat: fix to small sgl oop min offset

["Doherty, Declan" <declan.doherty@intel.com>]

On 18/03/2021 1:16 PM, Arek Kusztal wrote:
> This commit fixes problem with to small offset when both offsets
> (auth, cipher) are non zero in digest encrypt case,
> when using out-of-place and sgl.
> 
> Fixes: 40002f6c2a24 ("crypto/qat: extend support for digest-encrypted auth-cipher")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
> ---
>   drivers/crypto/qat/qat_sym.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/crypto/qat/qat_sym.c b/drivers/crypto/qat/qat_sym.c
> index 4b7676deb..a6cd33be3 100644
> --- a/drivers/crypto/qat/qat_sym.c
> +++ b/drivers/crypto/qat/qat_sym.c
> @@ -162,6 +162,7 @@ qat_sym_build_request(void *in_op, uint8_t *out_msg,
>   	uint8_t do_sgl = 0;
>   	uint8_t in_place = 1;
>   	int alignment_adjustment = 0;
> +	int oop_shift = 0;
>   	struct rte_crypto_op *op = (struct rte_crypto_op *)in_op;
>   	struct qat_sym_op_cookie *cookie =
>   				(struct qat_sym_op_cookie *)op_cookie;
> @@ -472,6 +473,7 @@ qat_sym_build_request(void *in_op, uint8_t *out_msg,
>   			rte_pktmbuf_iova_offset(op->sym->m_src, min_ofs);
>   		dst_buf_start =
>   			rte_pktmbuf_iova_offset(op->sym->m_dst, min_ofs);
> +		oop_shift = min_ofs;
>   
>   	} else {
>   		/* In-place operation
> @@ -532,7 +534,7 @@ qat_sym_build_request(void *in_op, uint8_t *out_msg,
>   		 /* First find the end of the data */
>   		if (do_sgl) {
>   			uint32_t remaining_off = auth_param->auth_off +
> -				auth_param->auth_len + alignment_adjustment;
> +				auth_param->auth_len + alignment_adjustment + oop_shift;
>   			struct rte_mbuf *sgl_buf =
>   				(in_place ?
>   					op->sym->m_src : op->sym->m_dst);
> 

Acked-by: Declan Doherty <declan.doherty@intel.com>