[PATCH 1/2] vhost: fix cipher data length

[Maxime Coquelin]

On 4/3/25 2:22 PM, Rajesh Mudimadugula wrote:
> This patch fixes cipher data length, in the event of algorithm
> chaining. When enqueuing crypto op to vhost backend
> cipher.data.length is set correctly which is in
> virtqueue_crypto_sym_pkt_header_arrange(). This field is computed
> and assigned wrongly instead of using passed value. This is
> rectified and using correct cipher data length in vhost crypto.
> 
> Fixes: 3bb595ecd682 ("vhost/crypto: add request handler")
> 
> Signed-off-by: Rajesh Mudimadugula <rmudimadugul at marvell.com>
> ---
>   lib/vhost/vhost_crypto.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/lib/vhost/vhost_crypto.c b/lib/vhost/vhost_crypto.c
> index 3c6c5dc114..ddcd93738b 100644
> --- a/lib/vhost/vhost_crypto.c
> +++ b/lib/vhost/vhost_crypto.c
> @@ -1358,8 +1358,7 @@ prepare_sym_chain_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
>   	op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
>   
>   	op->sym->cipher.data.offset = chain->para.cipher_start_src_offset;
> -	op->sym->cipher.data.length = chain->para.src_data_len -
> -			chain->para.cipher_start_src_offset;
> +	op->sym->cipher.data.length = chain->para.len_to_cipher;
>   
>   	op->sym->auth.data.offset = chain->para.hash_start_src_offset;
>   	op->sym->auth.data.length = chain->para.len_to_hash;

Applied to next-virtio/for-net-next.

Thanks,
Maxime