Re: [dpdk-dev] [PATCH] net/iavf: fix pkt len parsing in AVX512

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

> -----Original Message-----
> From: Coyle, David <david.coyle@intel.com>
> Sent: Wednesday, March 24, 2021 6:41 PM
> To: Rong, Leyi <leyi.rong@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; Lu,
> Wenzhuo <wenzhuo.lu@intel.com>; Xing, Beilei <beilei.xing@intel.com>
> Cc: dev@dpdk.org; Rong, Leyi <leyi.rong@intel.com>
> Subject: RE: [dpdk-dev] [PATCH] net/iavf: fix pkt len parsing in AVX512
> 
> Hi Leyi
> 
> > -----Original Message-----
> > From: dev <dev-bounces@dpdk.org> On Behalf Of Leyi Rong
> > Sent: Wednesday, March 17, 2021 9:18 AM
> > To: Zhang, Qi Z <qi.z.zhang@intel.com>; Lu, Wenzhuo
> > <wenzhuo.lu@intel.com>; Xing, Beilei <beilei.xing@intel.com>
> > Cc: dev@dpdk.org; Rong, Leyi <leyi.rong@intel.com>
> > Subject: [dpdk-dev] [PATCH] net/iavf: fix pkt len parsing in AVX512
> >
> > Fix pkt_len parsing when DEV_RX_OFFLOAD_KEEP_CRC is set in AVX512
> > path.
> >
> > Fixes: 31737f2b66fb ("net/iavf: enable AVX512 for legacy Rx")
> > Fixes: 6df587028e57 ("net/iavf: enable AVX512 for flexible Rx")
> >
> > Signed-off-by: Leyi Rong <leyi.rong@intel.com>
> > ---
> >  drivers/net/iavf/iavf_rxtx_vec_avx512.c | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/net/iavf/iavf_rxtx_vec_avx512.c
> > b/drivers/net/iavf/iavf_rxtx_vec_avx512.c
> > index 5cb4c7cda6..67184ae3f4 100644
> > --- a/drivers/net/iavf/iavf_rxtx_vec_avx512.c
> > +++ b/drivers/net/iavf/iavf_rxtx_vec_avx512.c
> > @@ -380,7 +380,7 @@ _iavf_recv_raw_pkts_vec_avx512(struct
> > iavf_rx_queue *rxq,
> >  len4_7);
> >  __m512i mb4_7 = _mm512_shuffle_epi8(desc4_7, shuf_msk);
> >
> > -mb4_7 = _mm512_add_epi16(mb4_7, crc_adjust);
> > +mb4_7 = _mm512_add_epi32(mb4_7, crc_adjust);
> >  /**
> >   * to get packet types, shift 64-bit values down 30 bits
> >   * and so ptype is in lower 8-bits in each @@ -411,7 +411,7 @@
> > _iavf_recv_raw_pkts_vec_avx512(struct iavf_rx_queue *rxq,  len0_3);
> > __m512i mb0_3 = _mm512_shuffle_epi8(desc0_3, shuf_msk);
> >
> > -mb0_3 = _mm512_add_epi16(mb0_3, crc_adjust);
> > +mb0_3 = _mm512_add_epi32(mb0_3, crc_adjust);
> >  /* get the packet types */
> >  const __m512i ptypes0_3 = _mm512_srli_epi64(desc0_3, 30);  const
> > __m256i ptypes2_3 = _mm512_extracti64x4_epi64(ptypes0_3, 1); @@
> -869,7
> > +869,7 @@ _iavf_recv_raw_pkts_vec_avx512_flex_rxd(struct iavf_rx_queue
> > *rxq,
> >   */
> >  __m512i mb4_7 = _mm512_shuffle_epi8(raw_desc4_7, shuf_msk);
> >
> > -mb4_7 = _mm512_add_epi16(mb4_7, crc_adjust);
> > +mb4_7 = _mm512_add_epi32(mb4_7, crc_adjust);
> >  /**
> >   * to get packet types, ptype is located in bit16-25
> >   * of each 128bits
> > @@ -898,7 +898,7 @@ _iavf_recv_raw_pkts_vec_avx512_flex_rxd(struct
> > iavf_rx_queue *rxq,
> >   */
> >  __m512i mb0_3 = _mm512_shuffle_epi8(raw_desc0_3, shuf_msk);
> >
> > -mb0_3 = _mm512_add_epi16(mb0_3, crc_adjust);
> > +mb0_3 = _mm512_add_epi32(mb0_3, crc_adjust);
> >  /**
> >   * to get packet types, ptype is located in bit16-25
> >   * of each 128bits
> > --
> > 2.25.1
> 
> This patch fixes the issue
> 
> Tested-by: David Coyle <david.coyle@intel.com>

Applied to dpdk-next-net-intel

Thanks
Qi