Re: [dpdk-stable] [dpdk-dev] [DPDK] net/ice: fix txq mbuf release mode

["Zhang, Qi Z" <qi.z.zhang@intel.com>]

> -----Original Message-----
> From: Rong, Leyi <leyi.rong@intel.com>
> Sent: 2021年4月27日 10:32
> To: Zhang, AlvinX <alvinx.zhang@intel.com>; Zhang, Qi Z
> <qi.z.zhang@intel.com>; Yang, Qiming <qiming.yang@intel.com>
> Cc: dev@dpdk.org; Zhang, AlvinX <alvinx.zhang@intel.com>;
> stable@dpdk.org
> Subject: RE: [dpdk-dev] [DPDK] net/ice: fix txq mbuf release mode
> 
> 
> > -----Original Message-----
> > From: dev <dev-bounces@dpdk.org> On Behalf Of Alvin Zhang
> > Sent: Sunday, April 25, 2021 5:27 PM
> > To: Zhang, Qi Z <qi.z.zhang@intel.com>; Yang, Qiming
> > <qiming.yang@intel.com>
> > Cc: dev@dpdk.org; Zhang, AlvinX <alvinx.zhang@intel.com>;
> > stable@dpdk.org
> > Subject: [dpdk-dev] [DPDK] net/ice: fix txq mbuf release mode
> >
> > In some cases, it seems that the txq mbuf vector release mode is
> > enabled first, and then it is confirmed that the conditions for using
> > the vector mode are not met.
> >
> > This patch puts the txq vector mode startup process after the
> > condition detection.
> >
> > Fixes: 28f9002ab67f ("net/ice: add Tx AVX512 offload path")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
> > ---
> >  drivers/net/ice/ice_rxtx.c | 16 +++++++++-------
> >  1 file changed, 9 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
> > index
> > 92fbbc1..49abcb2 100644
> > --- a/drivers/net/ice/ice_rxtx.c
> > +++ b/drivers/net/ice/ice_rxtx.c
> > @@ -3303,13 +3303,6 @@
> >  if (tx_check_ret >= 0 &&
> >      rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128) {
> > ad->tx_vec_allowed = true; -for (i = 0; i < dev->data->nb_tx_queues;
> > i++) { -txq = dev->data->tx_queues[i]; -if (txq &&
> > ice_txq_vec_setup(txq)) {
> > -ad->tx_vec_allowed = false;
> > -break;
> > -}
> > -}
> >
> >  if (rte_vect_get_max_simd_bitwidth() >=
> > RTE_VECT_SIMD_512 &&
> >  rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) ==
> > 1 && @@ -3329,6 +3322,15 @@
> >  if (!use_avx512 && tx_check_ret ==
> > ICE_VECTOR_OFFLOAD_PATH)
> >  ad->tx_vec_allowed = false;
> >
> > +if (ad->tx_vec_allowed) {
> > +for (i = 0; i < dev->data->nb_tx_queues; i++) { txq =
> > +dev->data->tx_queues[i]; if (txq && ice_txq_vec_setup(txq)) {
> > +ad->tx_vec_allowed = false;
> > +break;
> > +}
> > +}
> > +}
> >  } else {
> >  ad->tx_vec_allowed = false;
> >  }
> > --
> > 1.8.3.1
> 
> Acked-by: Leyi Rong <leyi.rong@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi