RE: [PATCH v1 1/9] baseband/acc: protection for TB negative scenario

["Chautru, Nicolas" <nicolas.chautru@intel.com>]

Hi Maxime, 
Thanks, will do in v2. 

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Friday, February 10, 2023 12:17 AM
> To: Chautru, Nicolas <nicolas.chautru@intel.com>; dev@dpdk.org
> Cc: Vargas, Hernan <hernan.vargas@intel.com>; stable@dpdk.org
> Subject: Re: [PATCH v1 1/9] baseband/acc: protection for TB negative scenario
> 
> 
> 
> On 2/9/23 23:19, Nicolas Chautru wrote:
> > Adding handling of negative scenario for malformed Transport Block
> > mode operations.
> >
> > Fixes: bec597b78a0 ("baseband/acc200: add LTE processing")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
> > ---
> >   drivers/baseband/acc/rte_vrb_pmd.c | 20 ++++++++++++++++++++
> >   1 file changed, 20 insertions(+)
> >
> > diff --git a/drivers/baseband/acc/rte_vrb_pmd.c
> > b/drivers/baseband/acc/rte_vrb_pmd.c
> > index 34e42d1f6e..797330a5dd 100644
> > --- a/drivers/baseband/acc/rte_vrb_pmd.c
> > +++ b/drivers/baseband/acc/rte_vrb_pmd.c
> > @@ -1820,6 +1820,9 @@ enqueue_enc_one_op_tb(struct acc_queue *q,
> struct rte_bbdev_enc_op *op,
> >   	r = op->turbo_enc.tb_params.r;
> >
> >   	while (mbuf_total_left > 0 && r < c) {
> > +		if (unlikely((input == NULL) || (output == NULL)))
> > +			return -1;
> > +
> >   		seg_total_left = rte_pktmbuf_data_len(input) - in_offset;
> >   		/* Set up DMA descriptor */
> >   		desc = acc_desc(q, total_enqueued_cbs); @@ -1854,6
> +1857,10 @@
> > enqueue_enc_one_op_tb(struct acc_queue *q, struct rte_bbdev_enc_op
> *op,
> >   		r++;
> >   	}
> >
> > +	/* In case the number of CB doesn't match, the configuration was
> invalid. */
> > +	if (current_enqueued_cbs != cbs_in_tb)
> 
> Maybe wrap it with unlikely()?
> 
> > +		return -1;
> > +
> >   	/* Set SDone on last CB descriptor for TB mode. */
> >   	desc->req.sdone_enable = 1;
> >
> > @@ -2100,6 +2107,9 @@ vrb_enqueue_ldpc_dec_one_op_tb(struct
> acc_queue *q, struct rte_bbdev_dec_op *op,
> >   	}
> >
> >   	while (mbuf_total_left > 0 && r < c) {
> > +		if (unlikely((input == NULL) || (h_output == NULL)))
> > +			return -1;
> > +
> >   		if (check_bit(op->ldpc_dec.op_flags,
> RTE_BBDEV_LDPC_DEC_SCATTER_GATHER))
> >   			seg_total_left = rte_pktmbuf_data_len(input) -
> in_offset;
> >   		else
> > @@ -2145,6 +2155,10 @@ vrb_enqueue_ldpc_dec_one_op_tb(struct
> acc_queue *q, struct rte_bbdev_dec_op *op,
> >   		r++;
> >   	}
> >
> > +	/* In case the number of CB doesn't match, the configuration was
> invalid. */
> > +	if (current_enqueued_cbs != cbs_in_tb)
> > +		return -1;
> > +
> >   #ifdef RTE_LIBRTE_BBDEV_DEBUG
> >   	if (check_mbuf_total_left(mbuf_total_left) != 0)
> >   		return -EINVAL;
> > @@ -2187,6 +2201,8 @@ enqueue_dec_one_op_tb(struct acc_queue *q,
> struct rte_bbdev_dec_op *op,
> >   	r = op->turbo_dec.tb_params.r;
> >
> >   	while (mbuf_total_left > 0 && r < c) {
> > +		if (unlikely((input == NULL) || (h_output == NULL)))
> > +			return -1;
> >
> >   		seg_total_left = rte_pktmbuf_data_len(input) - in_offset;
> >
> > @@ -2237,6 +2253,10 @@ enqueue_dec_one_op_tb(struct acc_queue *q,
> struct rte_bbdev_dec_op *op,
> >   		r++;
> >   	}
> >
> > +	/* In case the number of CB doesn't match, the configuration was
> invalid. */
> > +	if (current_enqueued_cbs != cbs_in_tb)
> > +		return -1;
> > +
> >   	/* Set SDone on last CB descriptor for TB mode */
> >   	desc->req.sdone_enable = 1;
> >
> 
> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> 
> Thanks,
> Maxime