/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright 2017 6WIND S.A.
 * Copyright 2017 Mellanox Technologies, Ltd
 */

#ifndef RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_
#define RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_

#include <stdint.h>
#include <string.h>
#include <stdlib.h>

#include <rte_altivec.h>

#include <rte_mbuf.h>
#include <rte_mempool.h>
#include <rte_prefetch.h>

#include <mlx5_prm.h>

#include "mlx5_defs.h"
#include "mlx5.h"
#include "mlx5_utils.h"
#include "mlx5_rxtx.h"
#include "mlx5_rxtx_vec.h"
#include "mlx5_autoconf.h"

#ifndef __INTEL_COMPILER
#pragma GCC diagnostic ignored "-Wcast-qual"
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
#endif

/**
 * Store free buffers to RX SW ring.
 *
 * @param elts
 *   Pointer to SW ring to be filled.
 * @param pkts
 *   Pointer to array of packets to be stored.
 * @param pkts_n
 *   Number of packets to be stored.
 */
static inline void
rxq_copy_mbuf_v(struct rte_mbuf **elts, struct rte_mbuf **pkts, uint16_t n)
{
        unsigned int pos;
        uint16_t p = n & -2;

        for (pos = 0; pos < p; pos += 2) {
                vector unsigned char mbp;

                mbp = (vector unsigned char)vec_vsx_ld(0,
                                (signed int const *)&elts[pos]);
                *(vector unsigned char *)&pkts[pos] = mbp;
        }
        if (n & 1)
                pkts[pos] = elts[pos];
}

/**
 * Decompress a compressed completion and fill in mbufs in RX SW ring with data
 * extracted from the title completion descriptor.
 *
 * @param rxq
 *   Pointer to RX queue structure.
 * @param cq
 *   Pointer to completion array having a compressed completion at first.
 * @param elts
 *   Pointer to SW ring to be filled. The first mbuf has to be pre-built from
 *   the title completion descriptor to be copied to the rest of mbufs.
 *
 * @return
 *   Number of mini-CQEs successfully decompressed.
 */
static inline uint16_t
rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
                    struct rte_mbuf **elts)
{
        volatile struct mlx5_mini_cqe8 *mcq = (void *)&(cq + 1)->pkt_info;
        struct rte_mbuf *t_pkt = elts[0]; /* Title packet is pre-built. */
        const vector unsigned char zero = (vector unsigned char){0};
        /* Mask to shuffle from extracted mini CQE to mbuf. */
        const vector unsigned char shuf_mask1 = (vector unsigned char){
                        -1, -1, -1, -1,   /* skip packet_type */
                         7,  6, -1, -1,   /* bswap16, pkt_len */
                         7,  6,           /* bswap16, data_len */
                        -1, -1,           /* skip vlan_tci */
                         3,  2,  1,  0};  /* bswap32, rss */
        const vector unsigned char shuf_mask2 = (vector unsigned char){
                        -1, -1, -1, -1,   /* skip packet_type */
                        15, 14, -1, -1,   /* bswap16, pkt_len */
                        15, 14,           /* data_len, bswap16 */
                        -1, -1,           /* skip vlan_tci */
                        11, 10,  9,  8};  /* bswap32, rss */
        /* Restore the compressed count. Must be 16 bits. */
        const uint16_t mcqe_n = t_pkt->data_len +
                (rxq->crc_present * RTE_ETHER_CRC_LEN);
        const vector unsigned char rearm =
                (vector unsigned char)vec_vsx_ld(0,
                (signed int const *)&t_pkt->rearm_data);
        const vector unsigned char rxdf =
                (vector unsigned char)vec_vsx_ld(0,
                (signed int const *)&t_pkt->rx_descriptor_fields1);
        const vector unsigned char crc_adj =
                (vector unsigned char)(vector unsigned short){
                        0, 0, rxq->crc_present * RTE_ETHER_CRC_LEN, 0,
                        rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0};
        const vector unsigned short rxdf_sel_mask =
                (vector unsigned short){
                        0xffff, 0xffff, 0, 0, 0, 0xffff, 0, 0};
        vector unsigned char ol_flags = (vector unsigned char){0};
        vector unsigned char ol_flags_mask = (vector unsigned char){0};
        unsigned int pos;
        unsigned int i;
        unsigned int inv = 0;

#ifdef MLX5_PMD_SOFT_COUNTERS
        const vector unsigned char ones = vec_splat_u8(-1);
        uint32_t rcvd_byte = 0;
        /* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */
        const vector unsigned char len_shuf_mask = (vector unsigned char){
                 3,  2, 11, 10,
                 7,  6, 15, 14,
                -1, -1, -1, -1,
                -1, -1, -1, -1};
#endif

        /*
         * A. load mCQEs into a 128bit register.
         * B. store rearm data to mbuf.
         * C. combine data from mCQEs with rx_descriptor_fields1.
         * D. store rx_descriptor_fields1.
         * E. store flow tag (rte_flow mark).
         */
        for (pos = 0; pos < mcqe_n; ) {
                vector unsigned char mcqe1, mcqe2;
                vector unsigned char rxdf1, rxdf2;
#ifdef MLX5_PMD_SOFT_COUNTERS
                const vector unsigned short mcqe_sel_mask =
                        (vector unsigned short){0, 0, 0xffff, 0xffff,
                        0, 0, 0xfff, 0xffff};
                const vector unsigned char lower_half = {
                        0, 1, 4, 5, 8, 9, 12, 13, 16,
                        17, 20, 21, 24, 25, 28, 29};
                const vector unsigned char upper_half = {
                        2, 3, 6, 7, 10, 11, 14, 15,
                        18, 19, 22, 23, 26, 27, 30, 31};
                vector unsigned short left, right;
                vector unsigned char byte_cnt, invalid_mask;
                vector unsigned long lshift;
                __attribute__((altivec(vector__)))
                        __attribute__((altivec(bool__)))
                        unsigned long long shmask;
                const vector unsigned long shmax = {64, 64};
#endif

                for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i)
                        if (likely(pos + i < mcqe_n))
                                rte_prefetch0((void *)(cq + pos + i));
                /* A.1 load mCQEs into a 128bit register. */
                mcqe1 = (vector unsigned char)vec_vsx_ld(0,
                        (signed int const *)&mcq[pos % 8]);
                mcqe2 = (vector unsigned char)vec_vsx_ld(0,
                        (signed int const *)&mcq[pos % 8 + 2]);

                /* B.1 store rearm data to mbuf. */
                *(vector unsigned char *)
                        &elts[pos]->rearm_data = rearm;
                *(vector unsigned char *)
                        &elts[pos + 1]->rearm_data = rearm;

                /* C.1 combine data from mCQEs with rx_descriptor_fields1. */
                rxdf1 = vec_perm(mcqe1, zero, shuf_mask1);
                rxdf2 = vec_perm(mcqe1, zero, shuf_mask2);
                rxdf1 = (vector unsigned char)
                        ((vector unsigned short)rxdf1 -
                        (vector unsigned short)crc_adj);
                rxdf2 = (vector unsigned char)
                        ((vector unsigned short)rxdf2 -
                        (vector unsigned short)crc_adj);
                rxdf1 = (vector unsigned char)
                        vec_sel((vector unsigned short)rxdf1,
                        (vector unsigned short)rxdf, rxdf_sel_mask);
                rxdf2 = (vector unsigned char)
                        vec_sel((vector unsigned short)rxdf2,
                        (vector unsigned short)rxdf, rxdf_sel_mask);

                /* D.1 store rx_descriptor_fields1. */
                *(vector unsigned char *)
                        &elts[pos]->rx_descriptor_fields1 = rxdf1;
                *(vector unsigned char *)
                        &elts[pos + 1]->rx_descriptor_fields1 = rxdf2;

                /* B.1 store rearm data to mbuf. */
                *(vector unsigned char *)
                        &elts[pos + 2]->rearm_data = rearm;
                *(vector unsigned char *)
                        &elts[pos + 3]->rearm_data = rearm;

                /* C.1 combine data from mCQEs with rx_descriptor_fields1. */
                rxdf1 = vec_perm(mcqe2, zero, shuf_mask1);
                rxdf2 = vec_perm(mcqe2, zero, shuf_mask2);
                rxdf1 = (vector unsigned char)
                        ((vector unsigned short)rxdf1 -
                        (vector unsigned short)crc_adj);
                rxdf2 = (vector unsigned char)
                        ((vector unsigned short)rxdf2 -
                        (vector unsigned short)crc_adj);
                rxdf1 = (vector unsigned char)
                        vec_sel((vector unsigned short)rxdf1,
                        (vector unsigned short)rxdf, rxdf_sel_mask);
                rxdf2 = (vector unsigned char)
                        vec_sel((vector unsigned short)rxdf2,
                        (vector unsigned short)rxdf, rxdf_sel_mask);

                /* D.1 store rx_descriptor_fields1. */
                *(vector unsigned char *)
                        &elts[pos + 2]->rx_descriptor_fields1 = rxdf1;
                *(vector unsigned char *)
                        &elts[pos + 3]->rx_descriptor_fields1 = rxdf2;

#ifdef MLX5_PMD_SOFT_COUNTERS
                invalid_mask = (vector unsigned char)(vector unsigned long){
                        (mcqe_n - pos) * sizeof(uint16_t) * 8, 0};

                lshift =
                        vec_splat((vector unsigned long)invalid_mask, 0);
                shmask = vec_cmpgt(shmax, lshift);
                invalid_mask = (vector unsigned char)
                        vec_sl((vector unsigned long)ones, lshift);
                invalid_mask = (vector unsigned char)
                        vec_sel((vector unsigned long)shmask,
                        (vector unsigned long)invalid_mask, shmask);

                byte_cnt = (vector unsigned char)
                        vec_sel((vector unsigned short)
                        vec_sro((vector unsigned short)mcqe1,
                        (vector unsigned char){32}),
                        (vector unsigned short)mcqe2, mcqe_sel_mask);
                byte_cnt = vec_perm(byte_cnt, zero, len_shuf_mask);
                byte_cnt = (vector unsigned char)
                        vec_andc((vector unsigned long)byte_cnt,
                        (vector unsigned long)invalid_mask);
                left = vec_perm((vector unsigned short)byte_cnt,
                        (vector unsigned short)zero, lower_half);
                right = vec_perm((vector unsigned short)byte_cnt,
                        (vector unsigned short)zero, upper_half);
                byte_cnt = (vector unsigned char)vec_add(left, right);
                left = vec_perm((vector unsigned short)byte_cnt,
                        (vector unsigned short)zero, lower_half);
                right = vec_perm((vector unsigned short)byte_cnt,
                        (vector unsigned short)zero, upper_half);
                byte_cnt = (vector unsigned char)vec_add(left, right);
                rcvd_byte += ((vector unsigned long)byte_cnt)[0];
#endif

                if (rxq->mark) {
                        if (rxq->mcqe_format !=
                            MLX5_CQE_RESP_FORMAT_FTAG_STRIDX) {
                                const uint32_t flow_tag = t_pkt->hash.fdir.hi;

                                /* E.1 store flow tag (rte_flow mark). */
                                elts[pos]->hash.fdir.hi = flow_tag;
                                elts[pos + 1]->hash.fdir.hi = flow_tag;
                                elts[pos + 2]->hash.fdir.hi = flow_tag;
                                elts[pos + 3]->hash.fdir.hi = flow_tag;
                        } else {
                                const vector unsigned char flow_mark_adj =
                                        (vector unsigned char)
                                        (vector unsigned int){
                                        -1, -1, -1, -1};
                                const vector unsigned char flow_mark_shuf =
                                        (vector unsigned char){
                                        -1, -1, -1, -1,
                                        -1, -1, -1, -1,
                                        12,  8,  9, -1,
                                         4,  0,  1,  -1};
                                const vector unsigned char ft_mask =
                                        (vector unsigned char)
                                        (vector unsigned int){
                                        0xffffff00, 0xffffff00,
                                        0xffffff00, 0xffffff00};
                                const vector unsigned char fdir_flags =
                                        (vector unsigned char)
                                        (vector unsigned int){
                                        RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_FDIR,
                                        RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_FDIR};
                                const vector unsigned char fdir_all_flags =
                                        (vector unsigned char)
                                        (vector unsigned int){
                                        RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID,
                                        RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID,
                                        RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID,
                                        RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID};
                                vector unsigned char fdir_id_flags =
                                        (vector unsigned char)
                                        (vector unsigned int){
                                        RTE_MBUF_F_RX_FDIR_ID, RTE_MBUF_F_RX_FDIR_ID,
                                        RTE_MBUF_F_RX_FDIR_ID, RTE_MBUF_F_RX_FDIR_ID};
                                /* Extract flow_tag field. */
                                vector unsigned char ftag0 = vec_perm(mcqe1,
                                                        zero, flow_mark_shuf);
                                vector unsigned char ftag1 = vec_perm(mcqe2,
                                                        zero, flow_mark_shuf);
                                vector unsigned char ftag =
                                        (vector unsigned char)
                                        vec_mergel((vector unsigned int)ftag0,
                                        (vector unsigned int)ftag1);
                                vector unsigned char invalid_mask =
                                        (vector unsigned char)
                                        vec_cmpeq((vector unsigned int)ftag,
                                        (vector unsigned int)zero);

                                ol_flags_mask = (vector unsigned char)
                                        vec_or((vector unsigned long)
                                        ol_flags_mask,
                                        (vector unsigned long)fdir_all_flags);

                                /* Set RTE_MBUF_F_RX_FDIR if flow tag is non-zero. */
                                invalid_mask = (vector unsigned char)
                                        vec_cmpeq((vector unsigned int)ftag,
                                        (vector unsigned int)zero);
                                ol_flags = (vector unsigned char)
                                        vec_or((vector unsigned long)ol_flags,
                                        (vector unsigned long)
                                        vec_andc((vector unsigned long)
                                        fdir_flags,
                                        (vector unsigned long)invalid_mask));
                                ol_flags_mask = (vector unsigned char)
                                        vec_or((vector unsigned long)
                                        ol_flags_mask,
                                        (vector unsigned long)fdir_flags);

                                /* Mask out invalid entries. */
                                fdir_id_flags = (vector unsigned char)
                                        vec_andc((vector unsigned long)
                                        fdir_id_flags,
                                        (vector unsigned long)invalid_mask);

                                /* Check if flow tag MLX5_FLOW_MARK_DEFAULT. */
                                ol_flags = (vector unsigned char)
                                        vec_or((vector unsigned long)ol_flags,
                                        (vector unsigned long)
                                        vec_andc((vector unsigned long)
                                        fdir_id_flags,
                                        (vector unsigned long)
                                        vec_cmpeq((vector unsigned int)ftag,
                                        (vector unsigned int)ft_mask)));

                                ftag = (vector unsigned char)
                                        ((vector unsigned int)ftag +
                                        (vector unsigned int)flow_mark_adj);
                                elts[pos]->hash.fdir.hi =
                                        ((vector unsigned int)ftag)[0];
                                elts[pos + 1]->hash.fdir.hi =
                                        ((vector unsigned int)ftag)[1];
                                elts[pos + 2]->hash.fdir.hi =
                                        ((vector unsigned int)ftag)[2];
                                elts[pos + 3]->hash.fdir.hi =
                                        ((vector unsigned int)ftag)[3];
                        }
                }
                if (unlikely(rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_HASH)) {
                        if (rxq->mcqe_format ==
                            MLX5_CQE_RESP_FORMAT_L34H_STRIDX) {
                                const uint8_t pkt_info =
                                        (cq->pkt_info & 0x3) << 6;
                                const uint8_t pkt_hdr0 =
                                        mcq[pos % 8].hdr_type;
                                const uint8_t pkt_hdr1 =
                                        mcq[pos % 8 + 1].hdr_type;
                                const uint8_t pkt_hdr2 =
                                        mcq[pos % 8 + 2].hdr_type;
                                const uint8_t pkt_hdr3 =
                                        mcq[pos % 8 + 3].hdr_type;
                                const vector unsigned char vlan_mask =
                                        (vector unsigned char)
                                        (vector unsigned int) {
                                        (RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED),
                                        (RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED),
                                        (RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED),
                                        (RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED)};
                                const vector unsigned char cv_mask =
                                        (vector unsigned char)
                                        (vector unsigned int) {
                                        MLX5_CQE_VLAN_STRIPPED,
                                        MLX5_CQE_VLAN_STRIPPED,
                                        MLX5_CQE_VLAN_STRIPPED,
                                        MLX5_CQE_VLAN_STRIPPED};
                                vector unsigned char pkt_cv =
                                        (vector unsigned char)
                                        (vector unsigned int) {
                                        pkt_hdr0 & 0x1, pkt_hdr1 & 0x1,
                                        pkt_hdr2 & 0x1, pkt_hdr3 & 0x1};

                                ol_flags_mask = (vector unsigned char)
                                        vec_or((vector unsigned long)
                                        ol_flags_mask,
                                        (vector unsigned long)vlan_mask);
                                ol_flags = (vector unsigned char)
                                        vec_or((vector unsigned long)ol_flags,
                                        (vector unsigned long)
                                        vec_and((vector unsigned long)vlan_mask,
                                        (vector unsigned long)
                                        vec_cmpeq((vector unsigned int)pkt_cv,
                                        (vector unsigned int)cv_mask)));
                                elts[pos]->packet_type =
                                        mlx5_ptype_table[(pkt_hdr0 >> 2) |
                                                         pkt_info];
                                elts[pos + 1]->packet_type =
                                        mlx5_ptype_table[(pkt_hdr1 >> 2) |
                                                         pkt_info];
                                elts[pos + 2]->packet_type =
                                        mlx5_ptype_table[(pkt_hdr2 >> 2) |
                                                         pkt_info];
                                elts[pos + 3]->packet_type =
                                        mlx5_ptype_table[(pkt_hdr3 >> 2) |
                                                         pkt_info];
                                if (rxq->tunnel) {
                                        elts[pos]->packet_type |=
                                                !!(((pkt_hdr0 >> 2) |
                                                pkt_info) & (1 << 6));
                                        elts[pos + 1]->packet_type |=
                                                !!(((pkt_hdr1 >> 2) |
                                                pkt_info) & (1 << 6));
                                        elts[pos + 2]->packet_type |=
                                                !!(((pkt_hdr2 >> 2) |
                                                pkt_info) & (1 << 6));
                                        elts[pos + 3]->packet_type |=
                                                !!(((pkt_hdr3 >> 2) |
                                                pkt_info) & (1 << 6));
                                }
                        }
                        const vector unsigned char hash_mask =
                                (vector unsigned char)(vector unsigned int) {
                                        RTE_MBUF_F_RX_RSS_HASH,
                                        RTE_MBUF_F_RX_RSS_HASH,
                                        RTE_MBUF_F_RX_RSS_HASH,
                                        RTE_MBUF_F_RX_RSS_HASH};
                        const vector unsigned char rearm_flags =
                                (vector unsigned char)(vector unsigned int) {
                                (uint32_t)t_pkt->ol_flags,
                                (uint32_t)t_pkt->ol_flags,
                                (uint32_t)t_pkt->ol_flags,
                                (uint32_t)t_pkt->ol_flags};

                        ol_flags_mask = (vector unsigned char)
                                vec_or((vector unsigned long)ol_flags_mask,
                                (vector unsigned long)hash_mask);
                        ol_flags = (vector unsigned char)
                                vec_or((vector unsigned long)ol_flags,
                                (vector unsigned long)
                                vec_andc((vector unsigned long)rearm_flags,
                                (vector unsigned long)ol_flags_mask));

                        elts[pos]->ol_flags =
                                ((vector unsigned int)ol_flags)[0];
                        elts[pos + 1]->ol_flags =
                                ((vector unsigned int)ol_flags)[1];
                        elts[pos + 2]->ol_flags =
                                ((vector unsigned int)ol_flags)[2];
                        elts[pos + 3]->ol_flags =
                                ((vector unsigned int)ol_flags)[3];
                        elts[pos]->hash.rss = 0;
                        elts[pos + 1]->hash.rss = 0;
                        elts[pos + 2]->hash.rss = 0;
                        elts[pos + 3]->hash.rss = 0;
                }
                if (rxq->dynf_meta) {
                        int32_t offs = rxq->flow_meta_offset;
                        const uint32_t meta =
                                *RTE_MBUF_DYNFIELD(t_pkt, offs, uint32_t *);

                        /* Check if title packet has valid metadata. */
                        if (meta) {
                                MLX5_ASSERT(t_pkt->ol_flags &
                                            rxq->flow_meta_mask);
                                *RTE_MBUF_DYNFIELD(elts[pos], offs,
                                                        uint32_t *) = meta;
                                *RTE_MBUF_DYNFIELD(elts[pos + 1], offs,
                                                        uint32_t *) = meta;
                                *RTE_MBUF_DYNFIELD(elts[pos + 2], offs,
                                                        uint32_t *) = meta;
                                *RTE_MBUF_DYNFIELD(elts[pos + 3], offs,
                                                        uint32_t *) = meta;
                        }
                }

                pos += MLX5_VPMD_DESCS_PER_LOOP;
                /* Move to next CQE and invalidate consumed CQEs. */
                if (!(pos & 0x7) && pos < mcqe_n) {
                        if (pos + 8 < mcqe_n)
                                rte_prefetch0((void *)(cq + pos + 8));
                        mcq = (void *)&(cq + pos)->pkt_info;
                        for (i = 0; i < 8; ++i)
                                cq[inv++].op_own = MLX5_CQE_INVALIDATE;
                }
        }

        /* Invalidate the rest of CQEs. */
        for (; inv < mcqe_n; ++inv)
                cq[inv].op_own = MLX5_CQE_INVALIDATE;

#ifdef MLX5_PMD_SOFT_COUNTERS
        rxq->stats.ipackets += mcqe_n;
        rxq->stats.ibytes += rcvd_byte;
#endif

        return mcqe_n;
}

/**
 * Calculate packet type and offload flag for mbuf and store it.
 *
 * @param rxq
 *   Pointer to RX queue structure.
 * @param cqes[4]
 *   Array of four 16bytes completions extracted from the original completion
 *   descriptor.
 * @param op_err
 *   Opcode vector having responder error status. Each field is 4B.
 * @param pkts
 *   Pointer to array of packets to be filled.
 */
static inline void
rxq_cq_to_ptype_oflags_v(struct mlx5_rxq_data *rxq,
                vector unsigned char cqes[4], vector unsigned char op_err,
                struct rte_mbuf **pkts)
{
        vector unsigned char pinfo0, pinfo1;
        vector unsigned char pinfo, ptype;
        vector unsigned char ol_flags = (vector unsigned char)
                (vector unsigned int){
                        rxq->rss_hash * RTE_MBUF_F_RX_RSS_HASH |
                                rxq->hw_timestamp * rxq->timestamp_rx_flag,
                        rxq->rss_hash * RTE_MBUF_F_RX_RSS_HASH |
                                rxq->hw_timestamp * rxq->timestamp_rx_flag,
                        rxq->rss_hash * RTE_MBUF_F_RX_RSS_HASH |
                                rxq->hw_timestamp * rxq->timestamp_rx_flag,
                        rxq->rss_hash * RTE_MBUF_F_RX_RSS_HASH |
                                rxq->hw_timestamp * rxq->timestamp_rx_flag};
        vector unsigned char cv_flags;
        const vector unsigned char zero = (vector unsigned char){0};
        const vector unsigned char ptype_mask =
                (vector unsigned char)(vector unsigned int){
                0x0000fd06, 0x0000fd06, 0x0000fd06, 0x0000fd06};
        const vector unsigned char ptype_ol_mask =
                (vector unsigned char)(vector unsigned int){
                0x00000106, 0x00000106, 0x00000106, 0x00000106};
        const vector unsigned char pinfo_mask =
                (vector unsigned char)(vector unsigned int){
                0x00000003, 0x00000003, 0x00000003, 0x00000003};
        const vector unsigned char cv_flag_sel = (vector unsigned char){
                0, (uint8_t)(RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED),
                (uint8_t)(RTE_MBUF_F_RX_IP_CKSUM_GOOD >> 1), 0,
                (uint8_t)(RTE_MBUF_F_RX_L4_CKSUM_GOOD >> 1), 0,
                (uint8_t)((RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD) >> 1),
                0, 0, 0, 0, 0, 0, 0, 0, 0};
        const vector unsigned char cv_mask =
                (vector unsigned char)(vector unsigned int){
                RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
                RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
                RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
                RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
                RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
                RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
                RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
                RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED};
        const vector unsigned char mbuf_init =
                (vector unsigned char)vec_vsx_ld
                        (0, (vector unsigned char *)&rxq->mbuf_initializer);
        const vector unsigned short rearm_sel_mask =
                (vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0};
        vector unsigned char rearm0, rearm1, rearm2, rearm3;
        uint8_t pt_idx0, pt_idx1, pt_idx2, pt_idx3;

        /* Extract pkt_info field. */
        pinfo0 = (vector unsigned char)
                vec_mergeh((vector unsigned int)cqes[0],
                (vector unsigned int)cqes[1]);
        pinfo1 = (vector unsigned char)
                vec_mergeh((vector unsigned int)cqes[2],
                (vector unsigned int)cqes[3]);
        pinfo = (vector unsigned char)
                vec_mergeh((vector unsigned long)pinfo0,
                (vector unsigned long)pinfo1);

        /* Extract hdr_type_etc field. */
        pinfo0 = (vector unsigned char)
                vec_mergel((vector unsigned int)cqes[0],
                (vector unsigned int)cqes[1]);
        pinfo1 = (vector unsigned char)
                vec_mergel((vector unsigned int)cqes[2],
                (vector unsigned int)cqes[3]);
        ptype = (vector unsigned char)
                vec_mergeh((vector unsigned long)pinfo0,
                (vector unsigned long)pinfo1);

        if (rxq->mark) {
                const vector unsigned char pinfo_ft_mask =
                        (vector unsigned char)(vector unsigned int){
                        0xffffff00, 0xffffff00, 0xffffff00, 0xffffff00};
                const vector unsigned char fdir_flags =
                        (vector unsigned char)(vector unsigned int){
                        RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_FDIR,
                        RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_FDIR};
                vector unsigned char fdir_id_flags =
                        (vector unsigned char)(vector unsigned int){
                        RTE_MBUF_F_RX_FDIR_ID, RTE_MBUF_F_RX_FDIR_ID,
                        RTE_MBUF_F_RX_FDIR_ID, RTE_MBUF_F_RX_FDIR_ID};
                vector unsigned char flow_tag, invalid_mask;

                flow_tag = (vector unsigned char)
                        vec_and((vector unsigned long)pinfo,
                        (vector unsigned long)pinfo_ft_mask);

                /* Check if flow tag is non-zero then set RTE_MBUF_F_RX_FDIR. */
                invalid_mask = (vector unsigned char)
                        vec_cmpeq((vector unsigned int)flow_tag,
                        (vector unsigned int)zero);
                ol_flags = (vector unsigned char)
                        vec_or((vector unsigned long)ol_flags,
                        (vector unsigned long)
                        vec_andc((vector unsigned long)fdir_flags,
                        (vector unsigned long)invalid_mask));

                /* Mask out invalid entries. */
                fdir_id_flags = (vector unsigned char)
                        vec_andc((vector unsigned long)fdir_id_flags,
                        (vector unsigned long)invalid_mask);

                /* Check if flow tag MLX5_FLOW_MARK_DEFAULT. */
                ol_flags = (vector unsigned char)
                        vec_or((vector unsigned long)ol_flags,
                        (vector unsigned long)
                        vec_andc((vector unsigned long)fdir_id_flags,
                        (vector unsigned long)
                        vec_cmpeq((vector unsigned int)flow_tag,
                        (vector unsigned int)pinfo_ft_mask)));
        }
        /*
         * Merge the two fields to generate the following:
         * bit[1]     = l3_ok
         * bit[2]     = l4_ok
         * bit[8]     = cv
         * bit[11:10] = l3_hdr_type
         * bit[14:12] = l4_hdr_type
         * bit[15]    = ip_frag
         * bit[16]    = tunneled
         * bit[17]    = outer_l3_type
         */
        ptype = (vector unsigned char)
                vec_and((vector unsigned long)ptype,
                (vector unsigned long)ptype_mask);
        pinfo = (vector unsigned char)
                vec_and((vector unsigned long)pinfo,
                (vector unsigned long)pinfo_mask);
        pinfo = (vector unsigned char)
                vec_sl((vector unsigned int)pinfo,
                (vector unsigned int){16, 16, 16, 16});

        /* Make pinfo has merged fields for ol_flags calculation. */
        pinfo = (vector unsigned char)
                vec_or((vector unsigned long)ptype,
                (vector unsigned long)pinfo);
        ptype = (vector unsigned char)
                vec_sr((vector unsigned int)pinfo,
                (vector unsigned int){10, 10, 10, 10});
        ptype = (vector unsigned char)
                vec_packs((vector unsigned int)ptype,
                (vector unsigned int)zero);

        /* Errored packets will have RTE_PTYPE_ALL_MASK. */
        op_err = (vector unsigned char)
                vec_sr((vector unsigned short)op_err,
                (vector unsigned short){8, 8, 8, 8, 8, 8, 8, 8});
        ptype = (vector unsigned char)
                vec_or((vector unsigned long)ptype,
                (vector unsigned long)op_err);

        pt_idx0 = (uint8_t)((vector unsigned char)ptype)[0];
        pt_idx1 = (uint8_t)((vector unsigned char)ptype)[2];
        pt_idx2 = (uint8_t)((vector unsigned char)ptype)[4];
        pt_idx3 = (uint8_t)((vector unsigned char)ptype)[6];

        pkts[0]->packet_type = mlx5_ptype_table[pt_idx0] |
                !!(pt_idx0 & (1 << 6)) * rxq->tunnel;
        pkts[1]->packet_type = mlx5_ptype_table[pt_idx1] |
                !!(pt_idx1 & (1 << 6)) * rxq->tunnel;
        pkts[2]->packet_type = mlx5_ptype_table[pt_idx2] |
                !!(pt_idx2 & (1 << 6)) * rxq->tunnel;
        pkts[3]->packet_type = mlx5_ptype_table[pt_idx3] |
                !!(pt_idx3 & (1 << 6)) * rxq->tunnel;

        /* Fill flags for checksum and VLAN. */
        pinfo = (vector unsigned char)
                vec_and((vector unsigned long)pinfo,
                (vector unsigned long)ptype_ol_mask);
        pinfo = vec_perm(cv_flag_sel, zero, pinfo);

        /* Locate checksum flags at byte[2:1] and merge with VLAN flags. */
        cv_flags = (vector unsigned char)
                vec_sl((vector unsigned int)pinfo,
                (vector unsigned int){9, 9, 9, 9});
        cv_flags = (vector unsigned char)
                vec_or((vector unsigned long)pinfo,
                (vector unsigned long)cv_flags);

        /* Move back flags to start from byte[0]. */
        cv_flags = (vector unsigned char)
                vec_sr((vector unsigned int)cv_flags,
                (vector unsigned int){8, 8, 8, 8});

        /* Mask out garbage bits. */
        cv_flags = (vector unsigned char)
                vec_and((vector unsigned long)cv_flags,
                (vector unsigned long)cv_mask);

        /* Merge to ol_flags. */
        ol_flags = (vector unsigned char)
                vec_or((vector unsigned long)ol_flags,
                (vector unsigned long)cv_flags);

        /* Merge mbuf_init and ol_flags. */
        rearm0 = (vector unsigned char)
                vec_sel((vector unsigned short)mbuf_init,
                (vector unsigned short)
                vec_slo((vector unsigned short)ol_flags,
                (vector unsigned char){64}), rearm_sel_mask);
        rearm1 = (vector unsigned char)
                vec_sel((vector unsigned short)mbuf_init,
                (vector unsigned short)
                vec_slo((vector unsigned short)ol_flags,
                (vector unsigned char){32}), rearm_sel_mask);
        rearm2 = (vector unsigned char)
                vec_sel((vector unsigned short)mbuf_init,
                (vector unsigned short)ol_flags, rearm_sel_mask);
        rearm3 = (vector unsigned char)
                vec_sel((vector unsigned short)mbuf_init,
                (vector unsigned short)
                vec_sro((vector unsigned short)ol_flags,
                (vector unsigned char){32}), rearm_sel_mask);

        /* Write 8B rearm_data and 8B ol_flags. */
        vec_vsx_st(rearm0, 0,
                (vector unsigned char *)&pkts[0]->rearm_data);
        vec_vsx_st(rearm1, 0,
                (vector unsigned char *)&pkts[1]->rearm_data);
        vec_vsx_st(rearm2, 0,
                (vector unsigned char *)&pkts[2]->rearm_data);
        vec_vsx_st(rearm3, 0,
                (vector unsigned char *)&pkts[3]->rearm_data);
}

/**
 * Process a non-compressed completion and fill in mbufs in RX SW ring
 * with data extracted from the title completion descriptor.
 *
 * @param rxq
 *   Pointer to RX queue structure.
 * @param cq
 *   Pointer to completion array having a non-compressed completion at first.
 * @param elts
 *   Pointer to SW ring to be filled. The first mbuf has to be pre-built from
 *   the title completion descriptor to be copied to the rest of mbufs.
 * @param[out] pkts
 *   Array to store received packets.
 * @param pkts_n
 *   Maximum number of packets in array.
 * @param[out] err
 *   Pointer to a flag. Set non-zero value if pkts array has at least one error
 *   packet to handle.
 * @param[out] comp
 *   Pointer to a index. Set it to the first compressed completion if any.
 *
 * @return
 *   Number of CQEs successfully processed.
 */
static inline uint16_t
rxq_cq_process_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
                 struct rte_mbuf **elts, struct rte_mbuf **pkts,
                 uint16_t pkts_n, uint64_t *err, uint64_t *comp)
{
        const uint16_t q_n = 1 << rxq->cqe_n;
        const uint16_t q_mask = q_n - 1;
        unsigned int pos;
        uint64_t n = 0;
        uint64_t comp_idx = MLX5_VPMD_DESCS_PER_LOOP;
        uint16_t nocmp_n = 0;
        unsigned int ownership = !!(rxq->cq_ci & (q_mask + 1));
        const vector unsigned char zero = (vector unsigned char){0};
        const vector unsigned char ones = vec_splat_u8(-1);
        const vector unsigned char owner_check =
                (vector unsigned char)(vector unsigned long){
                0x0100000001000000LL, 0x0100000001000000LL};
        const vector unsigned char opcode_check =
                (vector unsigned char)(vector unsigned long){
                0xf0000000f0000000LL, 0xf0000000f0000000LL};
        const vector unsigned char format_check =
                (vector unsigned char)(vector unsigned long){
                0x0c0000000c000000LL, 0x0c0000000c000000LL};
        const vector unsigned char resp_err_check =
                (vector unsigned char)(vector unsigned long){
                0xe0000000e0000000LL, 0xe0000000e0000000LL};
#ifdef MLX5_PMD_SOFT_COUNTERS
        uint32_t rcvd_byte = 0;
        /* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */
        const vector unsigned char len_shuf_mask = (vector unsigned char){
                 1,  0,  5,  4,
                 9,  8, 13, 12,
                -1, -1, -1, -1,
                -1, -1, -1, -1};
#endif
        /* Mask to shuffle from extracted CQE to mbuf. */
        const vector unsigned char shuf_mask = (vector unsigned char){
                 5,  4,           /* bswap16, pkt_len */
                -1, -1,           /* zero out 2nd half of pkt_len */
                 5,  4,           /* bswap16, data_len */
                11, 10,           /* bswap16, vlan+tci */
                15, 14, 13, 12,   /* bswap32, rss */
                 1,  2,  3, -1};  /* fdir.hi */
        /* Mask to blend from the last Qword to the first DQword. */
        /* Mask to blend from the last Qword to the first DQword. */
        const vector unsigned char blend_mask = (vector unsigned char){
                -1,  0,  0,  0,
                 0,  0,  0,  0,
                -1, -1, -1, -1,
                -1, -1, -1, -1};
        const vector unsigned char crc_adj =
                (vector unsigned char)(vector unsigned short){
                rxq->crc_present * RTE_ETHER_CRC_LEN, 0,
                rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0, 0, 0};
        const vector unsigned char flow_mark_adj =
                (vector unsigned char)(vector unsigned int){
                0, 0, 0, rxq->mark * (-1)};
        const vector unsigned short cqe_sel_mask1 =
                (vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0};
        const vector unsigned short cqe_sel_mask2 =
                (vector unsigned short){0, 0, 0xffff, 0, 0, 0, 0, 0};

        /*
         * A. load first Qword (8bytes) in one loop.
         * B. copy 4 mbuf pointers from elts ring to returning pkts.
         * C. load remaining CQE data and extract necessary fields.
         *    Final 16bytes cqes[] extracted from original 64bytes CQE has the
         *    following structure:
         *        struct {
         *          uint8_t  pkt_info;
         *          uint8_t  flow_tag[3];
         *          uint16_t byte_cnt;
         *          uint8_t  rsvd4;
         *          uint8_t  op_own;
         *          uint16_t hdr_type_etc;
         *          uint16_t vlan_info;
         *          uint32_t rx_has_res;
         *        } c;
         * D. fill in mbuf.
         * E. get valid CQEs.
         * F. find compressed CQE.
         */
        for (pos = 0;
             pos < pkts_n;
             pos += MLX5_VPMD_DESCS_PER_LOOP) {
                vector unsigned char cqes[MLX5_VPMD_DESCS_PER_LOOP];
                vector unsigned char cqe_tmp1, cqe_tmp2;
                vector unsigned char pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
                vector unsigned char op_own, op_own_tmp1, op_own_tmp2;
                vector unsigned char opcode, owner_mask, invalid_mask;
                vector unsigned char comp_mask;
                vector unsigned char mask;
#ifdef MLX5_PMD_SOFT_COUNTERS
                const vector unsigned char lower_half = {
                        0, 1, 4, 5, 8, 9, 12, 13,
                        16, 17, 20, 21, 24, 25, 28, 29};
                const vector unsigned char upper_half = {
                        2, 3, 6, 7, 10, 11, 14, 15,
                        18, 19, 22, 23, 26, 27, 30, 31};
                const vector unsigned long shmax = {64, 64};
                vector unsigned char byte_cnt;
                vector unsigned short left, right;
                vector unsigned long lshift;
                vector __attribute__((altivec(bool__)))
                        unsigned long shmask;
#endif
                vector unsigned char mbp1, mbp2;
                vector unsigned char p =
                        (vector unsigned char)(vector unsigned short){
                                0, 1, 2, 3, 0, 0, 0, 0};
                unsigned int p1, p2, p3;

                /* Prefetch next 4 CQEs. */
                if (pkts_n - pos >= 2 * MLX5_VPMD_DESCS_PER_LOOP) {
                        rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP]);
                        rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 1]);
                        rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 2]);
                        rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 3]);
                }

                /* A.0 do not cross the end of CQ. */
                mask = (vector unsigned char)(vector unsigned long){
                        (pkts_n - pos) * sizeof(uint16_t) * 8, 0};

                {
                        vector unsigned long lshift;
                        vector __attribute__((altivec(bool__)))
                                unsigned long shmask;
                        const vector unsigned long shmax = {64, 64};

                        lshift = vec_splat((vector unsigned long)mask, 0);
                        shmask = vec_cmpgt(shmax, lshift);
                        mask = (vector unsigned char)
                                vec_sl((vector unsigned long)ones, lshift);
                        mask = (vector unsigned char)
                                vec_sel((vector unsigned long)shmask,
                                (vector unsigned long)mask, shmask);
                }

                p = (vector unsigned char)
                        vec_andc((vector unsigned long)p,
                        (vector unsigned long)mask);

                /* A.1 load cqes. */
                p3 = (unsigned int)((vector unsigned short)p)[3];
                cqes[3] = (vector unsigned char)(vector unsigned long){
                        *(__rte_aligned(8) unsigned long *)
                        &cq[pos + p3].sop_drop_qpn, 0LL};
                rte_compiler_barrier();

                p2 = (unsigned int)((vector unsigned short)p)[2];
                cqes[2] = (vector unsigned char)(vector unsigned long){
                        *(__rte_aligned(8) unsigned long *)
                        &cq[pos + p2].sop_drop_qpn, 0LL};
                rte_compiler_barrier();

                /* B.1 load mbuf pointers. */
                mbp1 = (vector unsigned char)vec_vsx_ld(0,
                        (signed int const *)&elts[pos]);
                mbp2 = (vector unsigned char)vec_vsx_ld(0,
                        (signed int const *)&elts[pos + 2]);

                /* A.1 load a block having op_own. */
                p1 = (unsigned int)((vector unsigned short)p)[1];
                cqes[1] = (vector unsigned char)(vector unsigned long){
                        *(__rte_aligned(8) unsigned long *)
                        &cq[pos + p1].sop_drop_qpn, 0LL};
                rte_compiler_barrier();

                cqes[0] = (vector unsigned char)(vector unsigned long){
                        *(__rte_aligned(8) unsigned long *)
                        &cq[pos].sop_drop_qpn, 0LL};
                rte_compiler_barrier();

                /* B.2 copy mbuf pointers. */
                *(vector unsigned char *)&pkts[pos] = mbp1;
                *(vector unsigned char *)&pkts[pos + 2] = mbp2;
                rte_io_rmb();

                /* C.1 load remaining CQE data and extract necessary fields. */
                cqe_tmp2 = *(vector unsigned char *)
                        &cq[pos + p3].pkt_info;
                cqe_tmp1 = *(vector unsigned char *)
                        &cq[pos + p2].pkt_info;
                cqes[3] = vec_sel(cqes[3], cqe_tmp2, blend_mask);
                cqes[2] = vec_sel(cqes[2], cqe_tmp1, blend_mask);
                cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0,
                        (signed int const *)&cq[pos + p3].csum);
                cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0,
                        (signed int const *)&cq[pos + p2].csum);
                cqes[3] = (vector unsigned char)
                        vec_sel((vector unsigned short)cqes[3],
                        (vector unsigned short)cqe_tmp2, cqe_sel_mask1);
                cqes[2] = (vector unsigned char)
                        vec_sel((vector unsigned short)cqes[2],
                        (vector unsigned short)cqe_tmp1, cqe_sel_mask1);
                cqe_tmp2 = (vector unsigned char)(vector unsigned long){
                        *(__rte_aligned(8) unsigned long *)
                        &cq[pos + p3].rsvd4[2], 0LL};
                cqe_tmp1 = (vector unsigned char)(vector unsigned long){
                        *(__rte_aligned(8) unsigned long *)
                        &cq[pos + p2].rsvd4[2], 0LL};
                cqes[3] = (vector unsigned char)
                        vec_sel((vector unsigned short)cqes[3],
                        (vector unsigned short)cqe_tmp2,
                        (vector unsigned short)cqe_sel_mask2);
                cqes[2] = (vector unsigned char)
                        vec_sel((vector unsigned short)cqes[2],
                        (vector unsigned short)cqe_tmp1,
                        (vector unsigned short)cqe_sel_mask2);

                /* C.2 generate final structure for mbuf with swapping bytes. */
                pkt_mb3 = vec_perm(cqes[3], zero, shuf_mask);
                pkt_mb2 = vec_perm(cqes[2], zero, shuf_mask);

                /* C.3 adjust CRC length. */
                pkt_mb3 = (vector unsigned char)
                        ((vector unsigned short)pkt_mb3 -
                        (vector unsigned short)crc_adj);
                pkt_mb2 = (vector unsigned char)
                        ((vector unsigned short)pkt_mb2 -
                        (vector unsigned short)crc_adj);

                /* C.4 adjust flow mark. */
                pkt_mb3 = (vector unsigned char)
                        ((vector unsigned int)pkt_mb3 +
                        (vector unsigned int)flow_mark_adj);
                pkt_mb2 = (vector unsigned char)
                        ((vector unsigned int)pkt_mb2 +
                        (vector unsigned int)flow_mark_adj);

                /* D.1 fill in mbuf - rx_descriptor_fields1. */
                *(vector unsigned char *)
                        &pkts[pos + 3]->pkt_len = pkt_mb3;
                *(vector unsigned char *)
                        &pkts[pos + 2]->pkt_len = pkt_mb2;

                /* E.1 extract op_own field. */
                op_own_tmp2 = (vector unsigned char)
                        vec_mergeh((vector unsigned int)cqes[2],
                        (vector unsigned int)cqes[3]);

                /* C.1 load remaining CQE data and extract necessary fields. */
                cqe_tmp2 = *(vector unsigned char *)
                        &cq[pos + p1].pkt_info;
                cqe_tmp1 = *(vector unsigned char *)
                        &cq[pos].pkt_info;
                cqes[1] = vec_sel(cqes[1], cqe_tmp2, blend_mask);
                cqes[0] = vec_sel(cqes[0], cqe_tmp2, blend_mask);
                cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0,
                        (signed int const *)&cq[pos + p1].csum);
                cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0,
                        (signed int const *)&cq[pos].csum);
                cqes[1] = (vector unsigned char)
                        vec_sel((vector unsigned short)cqes[1],
                        (vector unsigned short)cqe_tmp2, cqe_sel_mask1);
                cqes[0] = (vector unsigned char)
                        vec_sel((vector unsigned short)cqes[0],
                        (vector unsigned short)cqe_tmp1, cqe_sel_mask1);
                cqe_tmp2 = (vector unsigned char)(vector unsigned long){
                        *(__rte_aligned(8) unsigned long *)
                        &cq[pos + p1].rsvd4[2], 0LL};
                cqe_tmp1 = (vector unsigned char)(vector unsigned long){
                        *(__rte_aligned(8) unsigned long *)
                        &cq[pos].rsvd4[2], 0LL};
                cqes[1] = (vector unsigned char)
                        vec_sel((vector unsigned short)cqes[1],
                        (vector unsigned short)cqe_tmp2, cqe_sel_mask2);
                cqes[0] = (vector unsigned char)
                        vec_sel((vector unsigned short)cqes[0],
                        (vector unsigned short)cqe_tmp1, cqe_sel_mask2);

                /* C.2 generate final structure for mbuf with swapping bytes. */
                pkt_mb1 = vec_perm(cqes[1], zero, shuf_mask);
                pkt_mb0 = vec_perm(cqes[0], zero, shuf_mask);

                /* C.3 adjust CRC length. */
                pkt_mb1 = (vector unsigned char)
                        ((vector unsigned short)pkt_mb1 -
                        (vector unsigned short)crc_adj);
                pkt_mb0 = (vector unsigned char)
                        ((vector unsigned short)pkt_mb0 -
                        (vector unsigned short)crc_adj);

                /* C.4 adjust flow mark. */
                pkt_mb1 = (vector unsigned char)
                        ((vector unsigned int)pkt_mb1 +
                        (vector unsigned int)flow_mark_adj);
                pkt_mb0 = (vector unsigned char)
                        ((vector unsigned int)pkt_mb0 +
                        (vector unsigned int)flow_mark_adj);

                /* E.1 extract op_own byte. */
                op_own_tmp1 = (vector unsigned char)
                        vec_mergeh((vector unsigned int)cqes[0],
                        (vector unsigned int)cqes[1]);
                op_own = (vector unsigned char)
                        vec_mergel((vector unsigned long)op_own_tmp1,
                        (vector unsigned long)op_own_tmp2);

                /* D.1 fill in mbuf - rx_descriptor_fields1. */
                *(vector unsigned char *)
                        &pkts[pos + 1]->pkt_len = pkt_mb1;
                *(vector unsigned char *)
                        &pkts[pos]->pkt_len = pkt_mb0;

                /* E.2 flip owner bit to mark CQEs from last round. */
                owner_mask = (vector unsigned char)
                        vec_and((vector unsigned long)op_own,
                        (vector unsigned long)owner_check);
                if (ownership)
                        owner_mask = (vector unsigned char)
                                vec_xor((vector unsigned long)owner_mask,
                                (vector unsigned long)owner_check);
                owner_mask = (vector unsigned char)
                        vec_cmpeq((vector unsigned int)owner_mask,
                        (vector unsigned int)owner_check);
                owner_mask = (vector unsigned char)
                        vec_packs((vector unsigned int)owner_mask,
                        (vector unsigned int)zero);

                /* E.3 get mask for invalidated CQEs. */
                opcode = (vector unsigned char)
                        vec_and((vector unsigned long)op_own,
                        (vector unsigned long)opcode_check);
                invalid_mask = (vector unsigned char)
                        vec_cmpeq((vector unsigned int)opcode_check,
                        (vector unsigned int)opcode);
                invalid_mask = (vector unsigned char)
                        vec_packs((vector unsigned int)invalid_mask,
                        (vector unsigned int)zero);

                /* E.4 mask out beyond boundary. */
                invalid_mask = (vector unsigned char)
                        vec_or((vector unsigned long)invalid_mask,
                        (vector unsigned long)mask);

                /* E.5 merge invalid_mask with invalid owner. */
                invalid_mask = (vector unsigned char)
                        vec_or((vector unsigned long)invalid_mask,
                        (vector unsigned long)owner_mask);

                /* F.1 find compressed CQE format. */
                comp_mask = (vector unsigned char)
                        vec_and((vector unsigned long)op_own,
                        (vector unsigned long)format_check);
                comp_mask = (vector unsigned char)
                        vec_cmpeq((vector unsigned int)comp_mask,
                        (vector unsigned int)format_check);
                comp_mask = (vector unsigned char)
                        vec_packs((vector unsigned int)comp_mask,
                        (vector unsigned int)zero);

                /* F.2 mask out invalid entries. */
                comp_mask = (vector unsigned char)
                        vec_andc((vector unsigned long)comp_mask,
                        (vector unsigned long)invalid_mask);
                comp_idx = ((vector unsigned long)comp_mask)[0];

                /* F.3 get the first compressed CQE. */
                comp_idx = comp_idx ? __builtin_ctzll(comp_idx) /
                        (sizeof(uint16_t) * 8) : MLX5_VPMD_DESCS_PER_LOOP;

                /* E.6 mask out entries after the compressed CQE. */
                mask = (vector unsigned char)(vector unsigned long){
                        (comp_idx * sizeof(uint16_t) * 8), 0};
                lshift = vec_splat((vector unsigned long)mask, 0);
                shmask = vec_cmpgt(shmax, lshift);
                mask = (vector unsigned char)
                        vec_sl((vector unsigned long)ones, lshift);
                mask = (vector unsigned char)
                        vec_sel((vector unsigned long)shmask,
                        (vector unsigned long)mask, shmask);
                invalid_mask = (vector unsigned char)
                        vec_or((vector unsigned long)invalid_mask,
                        (vector unsigned long)mask);

                /* E.7 count non-compressed valid CQEs. */
                n = ((vector unsigned long)invalid_mask)[0];
                n = n ? __builtin_ctzll(n) / (sizeof(uint16_t) * 8) :
                        MLX5_VPMD_DESCS_PER_LOOP;
                nocmp_n += n;

                /* D.2 get the final invalid mask. */
                mask = (vector unsigned char)(vector unsigned long){
                        (n * sizeof(uint16_t) * 8), 0};
                lshift = vec_splat((vector unsigned long)mask, 0);
                shmask = vec_cmpgt(shmax, lshift);
                mask = (vector unsigned char)
                        vec_sl((vector unsigned long)ones, lshift);
                mask = (vector unsigned char)
                        vec_sel((vector unsigned long)shmask,
                        (vector unsigned long)mask, shmask);
                invalid_mask = (vector unsigned char)
                        vec_or((vector unsigned long)invalid_mask,
                        (vector unsigned long)mask);

                /* D.3 check error in opcode. */
                opcode = (vector unsigned char)
                        vec_cmpeq((vector unsigned int)resp_err_check,
                        (vector unsigned int)opcode);
                opcode = (vector unsigned char)
                        vec_packs((vector unsigned int)opcode,
                        (vector unsigned int)zero);
                opcode = (vector unsigned char)
                        vec_andc((vector unsigned long)opcode,
                        (vector unsigned long)invalid_mask);

                /* D.4 mark if any error is set */
                *err |= ((vector unsigned long)opcode)[0];

                /* D.5 fill in mbuf - rearm_data and packet_type. */
                rxq_cq_to_ptype_oflags_v(rxq, cqes, opcode, &pkts[pos]);
                if (unlikely(rxq->shared)) {
                        pkts[pos]->port = cq[pos].user_index_low;
                        pkts[pos + p1]->port = cq[pos + p1].user_index_low;
                        pkts[pos + p2]->port = cq[pos + p2].user_index_low;
                        pkts[pos + p3]->port = cq[pos + p3].user_index_low;
                }
                if (rxq->hw_timestamp) {
                        int offset = rxq->timestamp_offset;
                        if (rxq->rt_timestamp) {
                                struct mlx5_dev_ctx_shared *sh = rxq->sh;
                                uint64_t ts;

                                ts = rte_be_to_cpu_64(cq[pos].timestamp);
                                mlx5_timestamp_set(pkts[pos], offset,
                                        mlx5_txpp_convert_rx_ts(sh, ts));
                                ts = rte_be_to_cpu_64(cq[pos + p1].timestamp);
                                mlx5_timestamp_set(pkts[pos + 1], offset,
                                        mlx5_txpp_convert_rx_ts(sh, ts));
                                ts = rte_be_to_cpu_64(cq[pos + p2].timestamp);
                                mlx5_timestamp_set(pkts[pos + 2], offset,
                                        mlx5_txpp_convert_rx_ts(sh, ts));
                                ts = rte_be_to_cpu_64(cq[pos + p3].timestamp);
                                mlx5_timestamp_set(pkts[pos + 3], offset,
                                        mlx5_txpp_convert_rx_ts(sh, ts));
                        } else {
                                mlx5_timestamp_set(pkts[pos], offset,
                                        rte_be_to_cpu_64(cq[pos].timestamp));
                                mlx5_timestamp_set(pkts[pos + 1], offset,
                                        rte_be_to_cpu_64(cq[pos + p1].timestamp));
                                mlx5_timestamp_set(pkts[pos + 2], offset,
                                        rte_be_to_cpu_64(cq[pos + p2].timestamp));
                                mlx5_timestamp_set(pkts[pos + 3], offset,
                                        rte_be_to_cpu_64(cq[pos + p3].timestamp));
                        }
                }
                if (rxq->dynf_meta) {
                        uint64_t flag = rxq->flow_meta_mask;
                        int32_t offs = rxq->flow_meta_offset;
                        uint32_t mask = rxq->flow_meta_port_mask;
                        uint32_t metadata;

                        /* This code is subject for futher optimization. */
                        metadata = rte_be_to_cpu_32
                                (cq[pos].flow_table_metadata) & mask;
                        *RTE_MBUF_DYNFIELD(pkts[pos], offs, uint32_t *) =
                                                                metadata;
                        pkts[pos]->ol_flags |= metadata ? flag : 0ULL;
                        metadata = rte_be_to_cpu_32
                                (cq[pos + 1].flow_table_metadata) & mask;
                        *RTE_MBUF_DYNFIELD(pkts[pos + 1], offs, uint32_t *) =
                                                                metadata;
                        pkts[pos + 1]->ol_flags |= metadata ? flag : 0ULL;
                        metadata = rte_be_to_cpu_32
                                (cq[pos + 2].flow_table_metadata) &     mask;
                        *RTE_MBUF_DYNFIELD(pkts[pos + 2], offs, uint32_t *) =
                                                                metadata;
                        pkts[pos + 2]->ol_flags |= metadata ? flag : 0ULL;
                        metadata = rte_be_to_cpu_32
                                (cq[pos + 3].flow_table_metadata) &     mask;
                        *RTE_MBUF_DYNFIELD(pkts[pos + 3], offs, uint32_t *) =
                                                                metadata;
                        pkts[pos + 3]->ol_flags |= metadata ? flag : 0ULL;
                }
#ifdef MLX5_PMD_SOFT_COUNTERS
                /* Add up received bytes count. */
                byte_cnt = vec_perm(op_own, zero, len_shuf_mask);
                byte_cnt = (vector unsigned char)
                        vec_andc((vector unsigned long)byte_cnt,
                        (vector unsigned long)invalid_mask);
                left = vec_perm((vector unsigned short)byte_cnt,
                        (vector unsigned short)zero, lower_half);
                right = vec_perm((vector unsigned short)byte_cnt,
                        (vector unsigned short)zero, upper_half);
                byte_cnt = (vector unsigned char)vec_add(left, right);
                left = vec_perm((vector unsigned short)byte_cnt,
                        (vector unsigned short)zero, lower_half);
                right = vec_perm((vector unsigned short)byte_cnt,
                        (vector unsigned short)zero, upper_half);
                byte_cnt = (vector unsigned char)vec_add(left, right);
                rcvd_byte += ((vector unsigned long)byte_cnt)[0];
#endif

                /*
                 * Break the loop unless more valid CQE is expected, or if
                 * there's a compressed CQE.
                 */
                if (n != MLX5_VPMD_DESCS_PER_LOOP)
                        break;
        }
#ifdef MLX5_PMD_SOFT_COUNTERS
        rxq->stats.ipackets += nocmp_n;
        rxq->stats.ibytes += rcvd_byte;
#endif
        if (comp_idx == n)
                *comp = comp_idx;
        return nocmp_n;
}

#endif /* RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_ */