drivers/net/mlx5/mlx5_rxtx_vec_altivec.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2017 6WIND S.A.
   3  * Copyright 2017 Mellanox Technologies, Ltd
   4  */
   5
   6 #ifndef RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_
   7 #define RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_
   8
   9 #include <stdint.h>
  10 #include <string.h>
  11 #include <stdlib.h>
  12
  13 #include <rte_altivec.h>
  14
  15 #include <rte_mbuf.h>
  16 #include <rte_mempool.h>
  17 #include <rte_prefetch.h>
  18
  19 #include <mlx5_prm.h>
  20
  21 #include "mlx5_defs.h"
  22 #include "mlx5.h"
  23 #include "mlx5_utils.h"
  24 #include "mlx5_rxtx.h"
  25 #include "mlx5_rxtx_vec.h"
  26 #include "mlx5_autoconf.h"
  27
  28 #ifndef __INTEL_COMPILER
  29 #pragma GCC diagnostic ignored "-Wcast-qual"
  30 #pragma GCC diagnostic ignored "-Wstrict-aliasing"
  31 #endif
  32
  33 /**
  34  * Store free buffers to RX SW ring.
  35  *
  36  * @param rxq
  37  *   Pointer to RX queue structure.
  38  * @param pkts
  39  *   Pointer to array of packets to be stored.
  40  * @param pkts_n
  41  *   Number of packets to be stored.
  42  */
  43 static inline void
  44 rxq_copy_mbuf_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t n)
  45 {
  46         const uint16_t q_mask = (1 << rxq->elts_n) - 1;
  47         struct rte_mbuf **elts = &(*rxq->elts)[rxq->rq_pi & q_mask];
  48         unsigned int pos;
  49         uint16_t p = n & -2;
  50
  51         for (pos = 0; pos < p; pos += 2) {
  52                 vector unsigned char mbp;
  53
  54                 mbp = (vector unsigned char)vec_vsx_ld(0,
  55                                 (signed int const *)&elts[pos]);
  56                 *(vector unsigned char *)&pkts[pos] = mbp;
  57         }
  58         if (n & 1)
  59                 pkts[pos] = elts[pos];
  60 }
  61
  62 /**
  63  * Decompress a compressed completion and fill in mbufs in RX SW ring with data
  64  * extracted from the title completion descriptor.
  65  *
  66  * @param rxq
  67  *   Pointer to RX queue structure.
  68  * @param cq
  69  *   Pointer to completion array having a compressed completion at first.
  70  * @param elts
  71  *   Pointer to SW ring to be filled. The first mbuf has to be pre-built from
  72  *   the title completion descriptor to be copied to the rest of mbufs.
  73  *
  74  * @return
  75  *   Number of mini-CQEs successfully decompressed.
  76  */
  77 static inline uint16_t
  78 rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
  79                     struct rte_mbuf **elts)
  80 {
  81         volatile struct mlx5_mini_cqe8 *mcq = (void *)&(cq + 1)->pkt_info;
  82         struct rte_mbuf *t_pkt = elts[0]; /* Title packet is pre-built. */
  83         const vector unsigned char zero = (vector unsigned char){0};
  84         /* Mask to shuffle from extracted mini CQE to mbuf. */
  85         const vector unsigned char shuf_mask1 = (vector unsigned char){
  86                         -1, -1, -1, -1,   /* skip packet_type */
  87                          7,  6, -1, -1,   /* bswap16, pkt_len */
  88                          7,  6,           /* bswap16, data_len */
  89                         -1, -1,           /* skip vlan_tci */
  90                          3,  2,  1,  0};  /* bswap32, rss */
  91         const vector unsigned char shuf_mask2 = (vector unsigned char){
  92                         -1, -1, -1, -1,   /* skip packet_type */
  93                         15, 14, -1, -1,   /* bswap16, pkt_len */
  94                         15, 14,           /* data_len, bswap16 */
  95                         -1, -1,           /* skip vlan_tci */
  96                         11, 10,  9,  8};  /* bswap32, rss */
  97         /* Restore the compressed count. Must be 16 bits. */
  98         const uint16_t mcqe_n = t_pkt->data_len +
  99                 (rxq->crc_present * RTE_ETHER_CRC_LEN);
 100         const vector unsigned char rearm =
 101                 (vector unsigned char)vec_vsx_ld(0,
 102                 (signed int const *)&t_pkt->rearm_data);
 103         const vector unsigned char rxdf =
 104                 (vector unsigned char)vec_vsx_ld(0,
 105                 (signed int const *)&t_pkt->rx_descriptor_fields1);
 106         const vector unsigned char crc_adj =
 107                 (vector unsigned char)(vector unsigned short){
 108                         0, 0, rxq->crc_present * RTE_ETHER_CRC_LEN, 0,
 109                         rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0};
 110         const vector unsigned short rxdf_sel_mask =
 111                 (vector unsigned short){
 112                         0xffff, 0xffff, 0, 0, 0, 0xffff, 0, 0};
 113         const uint32_t flow_tag = t_pkt->hash.fdir.hi;
 114         unsigned int pos;
 115         unsigned int i;
 116         unsigned int inv = 0;
 117
 118 #ifdef MLX5_PMD_SOFT_COUNTERS
 119         const vector unsigned char ones = vec_splat_u8(-1);
 120         uint32_t rcvd_byte = 0;
 121         /* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */
 122         const vector unsigned char len_shuf_mask = (vector unsigned char){
 123                  3,  2, 11, 10,
 124                  7,  6, 15, 14,
 125                 -1, -1, -1, -1,
 126                 -1, -1, -1, -1};
 127 #endif
 128
 129         /*
 130          * A. load mCQEs into a 128bit register.
 131          * B. store rearm data to mbuf.
 132          * C. combine data from mCQEs with rx_descriptor_fields1.
 133          * D. store rx_descriptor_fields1.
 134          * E. store flow tag (rte_flow mark).
 135          */
 136         for (pos = 0; pos < mcqe_n; ) {
 137                 vector unsigned char mcqe1, mcqe2;
 138                 vector unsigned char rxdf1, rxdf2;
 139 #ifdef MLX5_PMD_SOFT_COUNTERS
 140                 const vector unsigned short mcqe_sel_mask =
 141                         (vector unsigned short){0, 0, 0xffff, 0xffff,
 142                         0, 0, 0xfff, 0xffff};
 143                 const vector unsigned char lower_half = {
 144                         0, 1, 4, 5, 8, 9, 12, 13, 16,
 145                         17, 20, 21, 24, 25, 28, 29};
 146                 const vector unsigned char upper_half = {
 147                         2, 3, 6, 7, 10, 11, 14, 15,
 148                         18, 19, 22, 23, 26, 27, 30, 31};
 149                 vector unsigned short left, right;
 150                 vector unsigned char byte_cnt, invalid_mask;
 151                 vector unsigned long lshift;
 152                 __attribute__((altivec(vector__)))
 153                         __attribute__((altivec(bool__)))
 154                         unsigned long long shmask;
 155                 const vector unsigned long shmax = {64, 64};
 156 #endif
 157
 158                 for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i)
 159                         if (likely(pos + i < mcqe_n))
 160                                 rte_prefetch0((void *)(cq + pos + i));
 161
 162                 /* A.1 load mCQEs into a 128bit register. */
 163                 mcqe1 = (vector unsigned char)vec_vsx_ld(0,
 164                         (signed int const *)&mcq[pos % 8]);
 165                 mcqe2 = (vector unsigned char)vec_vsx_ld(0,
 166                         (signed int const *)&mcq[pos % 8 + 2]);
 167
 168                 /* B.1 store rearm data to mbuf. */
 169                 *(vector unsigned char *)
 170                         &elts[pos]->rearm_data = rearm;
 171                 *(vector unsigned char *)
 172                         &elts[pos + 1]->rearm_data = rearm;
 173
 174                 /* C.1 combine data from mCQEs with rx_descriptor_fields1. */
 175                 rxdf1 = vec_perm(mcqe1, zero, shuf_mask1);
 176                 rxdf2 = vec_perm(mcqe1, zero, shuf_mask2);
 177                 rxdf1 = (vector unsigned char)
 178                         ((vector unsigned short)rxdf1 -
 179                         (vector unsigned short)crc_adj);
 180                 rxdf2 = (vector unsigned char)
 181                         ((vector unsigned short)rxdf2 -
 182                         (vector unsigned short)crc_adj);
 183                 rxdf1 = (vector unsigned char)
 184                         vec_sel((vector unsigned short)rxdf1,
 185                         (vector unsigned short)rxdf, rxdf_sel_mask);
 186                 rxdf2 = (vector unsigned char)
 187                         vec_sel((vector unsigned short)rxdf2,
 188                         (vector unsigned short)rxdf, rxdf_sel_mask);
 189
 190                 /* D.1 store rx_descriptor_fields1. */
 191                 *(vector unsigned char *)
 192                         &elts[pos]->rx_descriptor_fields1 = rxdf1;
 193                 *(vector unsigned char *)
 194                         &elts[pos + 1]->rx_descriptor_fields1 = rxdf2;
 195
 196                 /* B.1 store rearm data to mbuf. */
 197                 *(vector unsigned char *)
 198                         &elts[pos + 2]->rearm_data = rearm;
 199                 *(vector unsigned char *)
 200                         &elts[pos + 3]->rearm_data = rearm;
 201
 202                 /* C.1 combine data from mCQEs with rx_descriptor_fields1. */
 203                 rxdf1 = vec_perm(mcqe2, zero, shuf_mask1);
 204                 rxdf2 = vec_perm(mcqe2, zero, shuf_mask2);
 205                 rxdf1 = (vector unsigned char)
 206                         ((vector unsigned short)rxdf1 -
 207                         (vector unsigned short)crc_adj);
 208                 rxdf2 = (vector unsigned char)
 209                         ((vector unsigned short)rxdf2 -
 210                         (vector unsigned short)crc_adj);
 211                 rxdf1 = (vector unsigned char)
 212                         vec_sel((vector unsigned short)rxdf1,
 213                         (vector unsigned short)rxdf, rxdf_sel_mask);
 214                 rxdf2 = (vector unsigned char)
 215                         vec_sel((vector unsigned short)rxdf2,
 216                         (vector unsigned short)rxdf, rxdf_sel_mask);
 217
 218                 /* D.1 store rx_descriptor_fields1. */
 219                 *(vector unsigned char *)
 220                         &elts[pos + 2]->rx_descriptor_fields1 = rxdf1;
 221                 *(vector unsigned char *)
 222                         &elts[pos + 3]->rx_descriptor_fields1 = rxdf2;
 223
 224 #ifdef MLX5_PMD_SOFT_COUNTERS
 225                 invalid_mask = (vector unsigned char)(vector unsigned long){
 226                         (mcqe_n - pos) * sizeof(uint16_t) * 8, 0};
 227
 228                 lshift =
 229                         vec_splat((vector unsigned long)invalid_mask, 0);
 230                 shmask = vec_cmpgt(shmax, lshift);
 231                 invalid_mask = (vector unsigned char)
 232                         vec_sl((vector unsigned long)ones, lshift);
 233                 invalid_mask = (vector unsigned char)
 234                         vec_sel((vector unsigned long)shmask,
 235                         (vector unsigned long)invalid_mask, shmask);
 236
 237                 mcqe1 = (vector unsigned char)
 238                         vec_sro((vector unsigned short)mcqe1,
 239                         (vector unsigned char){32}),
 240                 byte_cnt = (vector unsigned char)
 241                         vec_sel((vector unsigned short)mcqe1,
 242                         (vector unsigned short)mcqe2, mcqe_sel_mask);
 243                 byte_cnt = vec_perm(byte_cnt, zero, len_shuf_mask);
 244                 byte_cnt = (vector unsigned char)
 245                         vec_andc((vector unsigned long)byte_cnt,
 246                         (vector unsigned long)invalid_mask);
 247                 left = vec_perm((vector unsigned short)byte_cnt,
 248                         (vector unsigned short)zero, lower_half);
 249                 right = vec_perm((vector unsigned short)byte_cnt,
 250                         (vector unsigned short)zero, upper_half);
 251                 byte_cnt = (vector unsigned char)vec_add(left, right);
 252                 left = vec_perm((vector unsigned short)byte_cnt,
 253                         (vector unsigned short)zero, lower_half);
 254                 right = vec_perm((vector unsigned short)byte_cnt,
 255                         (vector unsigned short)zero, upper_half);
 256                 byte_cnt = (vector unsigned char)vec_add(left, right);
 257                 rcvd_byte += ((vector unsigned long)byte_cnt)[0];
 258 #endif
 259
 260                 if (rxq->mark) {
 261                         /* E.1 store flow tag (rte_flow mark). */
 262                         elts[pos]->hash.fdir.hi = flow_tag;
 263                         elts[pos + 1]->hash.fdir.hi = flow_tag;
 264                         elts[pos + 2]->hash.fdir.hi = flow_tag;
 265                         elts[pos + 3]->hash.fdir.hi = flow_tag;
 266                 }
 267                 if (rxq->dynf_meta) {
 268                         int32_t offs = rxq->flow_meta_offset;
 269                         const uint32_t meta =
 270                                 *RTE_MBUF_DYNFIELD(t_pkt, offs, uint32_t *);
 271
 272                         /* Check if title packet has valid metadata. */
 273                         if (meta) {
 274                                 MLX5_ASSERT(t_pkt->ol_flags &
 275                                             rxq->flow_meta_mask);
 276                                 *RTE_MBUF_DYNFIELD(elts[pos], offs,
 277                                                         uint32_t *) = meta;
 278                                 *RTE_MBUF_DYNFIELD(elts[pos + 1], offs,
 279                                                         uint32_t *) = meta;
 280                                 *RTE_MBUF_DYNFIELD(elts[pos + 2], offs,
 281                                                         uint32_t *) = meta;
 282                                 *RTE_MBUF_DYNFIELD(elts[pos + 3], offs,
 283                                                         uint32_t *) = meta;
 284                         }
 285                 }
 286
 287                 pos += MLX5_VPMD_DESCS_PER_LOOP;
 288                 /* Move to next CQE and invalidate consumed CQEs. */
 289                 if (!(pos & 0x7) && pos < mcqe_n) {
 290                         mcq = (void *)&(cq + pos)->pkt_info;
 291                         for (i = 0; i < 8; ++i)
 292                                 cq[inv++].op_own = MLX5_CQE_INVALIDATE;
 293                 }
 294         }
 295
 296         /* Invalidate the rest of CQEs. */
 297         for (; inv < mcqe_n; ++inv)
 298                 cq[inv].op_own = MLX5_CQE_INVALIDATE;
 299
 300 #ifdef MLX5_PMD_SOFT_COUNTERS
 301         rxq->stats.ipackets += mcqe_n;
 302         rxq->stats.ibytes += rcvd_byte;
 303 #endif
 304
 305         rxq->cq_ci += mcqe_n;
 306         return mcqe_n;
 307 }
 308
 309 /**
 310  * Calculate packet type and offload flag for mbuf and store it.
 311  *
 312  * @param rxq
 313  *   Pointer to RX queue structure.
 314  * @param cqes[4]
 315  *   Array of four 16bytes completions extracted from the original completion
 316  *   descriptor.
 317  * @param op_err
 318  *   Opcode vector having responder error status. Each field is 4B.
 319  * @param pkts
 320  *   Pointer to array of packets to be filled.
 321  */
 322 static inline void
 323 rxq_cq_to_ptype_oflags_v(struct mlx5_rxq_data *rxq,
 324                 vector unsigned char cqes[4], vector unsigned char op_err,
 325                 struct rte_mbuf **pkts)
 326 {
 327         vector unsigned char pinfo0, pinfo1;
 328         vector unsigned char pinfo, ptype;
 329         vector unsigned char ol_flags = (vector unsigned char)
 330                 (vector unsigned int){
 331                         rxq->rss_hash * PKT_RX_RSS_HASH |
 332                                 rxq->hw_timestamp * PKT_RX_TIMESTAMP,
 333                         rxq->rss_hash * PKT_RX_RSS_HASH |
 334                                 rxq->hw_timestamp * PKT_RX_TIMESTAMP,
 335                         rxq->rss_hash * PKT_RX_RSS_HASH |
 336                                 rxq->hw_timestamp * PKT_RX_TIMESTAMP,
 337                         rxq->rss_hash * PKT_RX_RSS_HASH |
 338                                 rxq->hw_timestamp * PKT_RX_TIMESTAMP};
 339         vector unsigned char cv_flags;
 340         const vector unsigned char zero = (vector unsigned char){0};
 341         const vector unsigned char ptype_mask =
 342                 (vector unsigned char)(vector unsigned int){
 343                 0x0000fd06, 0x0000fd06, 0x0000fd06, 0x0000fd06};
 344         const vector unsigned char ptype_ol_mask =
 345                 (vector unsigned char)(vector unsigned int){
 346                 0x00000106, 0x00000106, 0x00000106, 0x00000106};
 347         const vector unsigned char pinfo_mask =
 348                 (vector unsigned char)(vector unsigned int){
 349                 0x00000003, 0x00000003, 0x00000003, 0x00000003};
 350         const vector unsigned char cv_flag_sel = (vector unsigned char){
 351                 0, (uint8_t)(PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED),
 352                 (uint8_t)(PKT_RX_IP_CKSUM_GOOD >> 1), 0,
 353                 (uint8_t)(PKT_RX_L4_CKSUM_GOOD >> 1), 0,
 354                 (uint8_t)((PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD) >> 1),
 355                 0, 0, 0, 0, 0, 0, 0, 0, 0};
 356         const vector unsigned char cv_mask =
 357                 (vector unsigned char)(vector unsigned int){
 358                 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
 359                 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 360                 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
 361                 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 362                 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
 363                 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 364                 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
 365                 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED};
 366         const vector unsigned char mbuf_init =
 367                 (vector unsigned char)vec_vsx_ld
 368                         (0, (vector unsigned char *)&rxq->mbuf_initializer);
 369         const vector unsigned short rearm_sel_mask =
 370                 (vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0};
 371         vector unsigned char rearm0, rearm1, rearm2, rearm3;
 372         uint8_t pt_idx0, pt_idx1, pt_idx2, pt_idx3;
 373
 374         /* Extract pkt_info field. */
 375         pinfo0 = (vector unsigned char)
 376                 vec_mergeh((vector unsigned int)cqes[0],
 377                 (vector unsigned int)cqes[1]);
 378         pinfo1 = (vector unsigned char)
 379                 vec_mergeh((vector unsigned int)cqes[2],
 380                 (vector unsigned int)cqes[3]);
 381         pinfo = (vector unsigned char)
 382                 vec_mergeh((vector unsigned long)pinfo0,
 383                 (vector unsigned long)pinfo1);
 384
 385         /* Extract hdr_type_etc field. */
 386         pinfo0 = (vector unsigned char)
 387                 vec_mergel((vector unsigned int)cqes[0],
 388                 (vector unsigned int)cqes[1]);
 389         pinfo1 = (vector unsigned char)
 390                 vec_mergel((vector unsigned int)cqes[2],
 391                 (vector unsigned int)cqes[3]);
 392         ptype = (vector unsigned char)
 393                 vec_mergeh((vector unsigned long)pinfo0,
 394                 (vector unsigned long)pinfo1);
 395
 396         if (rxq->mark) {
 397                 const vector unsigned char pinfo_ft_mask =
 398                         (vector unsigned char)(vector unsigned int){
 399                         0xffffff00, 0xffffff00, 0xffffff00, 0xffffff00};
 400                 const vector unsigned char fdir_flags =
 401                         (vector unsigned char)(vector unsigned int){
 402                         PKT_RX_FDIR, PKT_RX_FDIR,
 403                         PKT_RX_FDIR, PKT_RX_FDIR};
 404                 vector unsigned char fdir_id_flags =
 405                         (vector unsigned char)(vector unsigned int){
 406                         PKT_RX_FDIR_ID, PKT_RX_FDIR_ID,
 407                         PKT_RX_FDIR_ID, PKT_RX_FDIR_ID};
 408                 vector unsigned char flow_tag, invalid_mask;
 409
 410                 flow_tag = (vector unsigned char)
 411                         vec_and((vector unsigned long)pinfo,
 412                         (vector unsigned long)pinfo_ft_mask);
 413
 414                 /* Check if flow tag is non-zero then set PKT_RX_FDIR. */
 415                 invalid_mask = (vector unsigned char)
 416                         vec_cmpeq((vector unsigned int)flow_tag,
 417                         (vector unsigned int)zero);
 418                 ol_flags = (vector unsigned char)
 419                         vec_or((vector unsigned long)ol_flags,
 420                         (vector unsigned long)
 421                         vec_andc((vector unsigned long)fdir_flags,
 422                         (vector unsigned long)invalid_mask));
 423
 424                 /* Mask out invalid entries. */
 425                 fdir_id_flags = (vector unsigned char)
 426                         vec_andc((vector unsigned long)fdir_id_flags,
 427                         (vector unsigned long)invalid_mask);
 428
 429                 /* Check if flow tag MLX5_FLOW_MARK_DEFAULT. */
 430                 ol_flags = (vector unsigned char)
 431                         vec_or((vector unsigned long)ol_flags,
 432                         (vector unsigned long)
 433                         vec_andc((vector unsigned long)fdir_id_flags,
 434                         (vector unsigned long)
 435                         vec_cmpeq((vector unsigned int)flow_tag,
 436                         (vector unsigned int)pinfo_ft_mask)));
 437         }
 438         /*
 439          * Merge the two fields to generate the following:
 440          * bit[1]     = l3_ok
 441          * bit[2]     = l4_ok
 442          * bit[8]     = cv
 443          * bit[11:10] = l3_hdr_type
 444          * bit[14:12] = l4_hdr_type
 445          * bit[15]    = ip_frag
 446          * bit[16]    = tunneled
 447          * bit[17]    = outer_l3_type
 448          */
 449         ptype = (vector unsigned char)
 450                 vec_and((vector unsigned long)ptype,
 451                 (vector unsigned long)ptype_mask);
 452         pinfo = (vector unsigned char)
 453                 vec_and((vector unsigned long)pinfo,
 454                 (vector unsigned long)pinfo_mask);
 455         pinfo = (vector unsigned char)
 456                 vec_sl((vector unsigned int)pinfo,
 457                 (vector unsigned int){16, 16, 16, 16});
 458
 459         /* Make pinfo has merged fields for ol_flags calculation. */
 460         pinfo = (vector unsigned char)
 461                 vec_or((vector unsigned long)ptype,
 462                 (vector unsigned long)pinfo);
 463         ptype = (vector unsigned char)
 464                 vec_sr((vector unsigned int)pinfo,
 465                 (vector unsigned int){10, 10, 10, 10});
 466         ptype = (vector unsigned char)
 467                 vec_packs((vector unsigned int)ptype,
 468                 (vector unsigned int)zero);
 469
 470         /* Errored packets will have RTE_PTYPE_ALL_MASK. */
 471         op_err = (vector unsigned char)
 472                 vec_sr((vector unsigned short)op_err,
 473                 (vector unsigned short){8, 8, 8, 8, 8, 8, 8, 8});
 474         ptype = (vector unsigned char)
 475                 vec_or((vector unsigned long)ptype,
 476                 (vector unsigned long)op_err);
 477
 478         pt_idx0 = (uint8_t)((vector unsigned char)ptype)[0];
 479         pt_idx1 = (uint8_t)((vector unsigned char)ptype)[2];
 480         pt_idx2 = (uint8_t)((vector unsigned char)ptype)[4];
 481         pt_idx3 = (uint8_t)((vector unsigned char)ptype)[6];
 482
 483         pkts[0]->packet_type = mlx5_ptype_table[pt_idx0] |
 484                 !!(pt_idx0 & (1 << 6)) * rxq->tunnel;
 485         pkts[1]->packet_type = mlx5_ptype_table[pt_idx1] |
 486                 !!(pt_idx1 & (1 << 6)) * rxq->tunnel;
 487         pkts[2]->packet_type = mlx5_ptype_table[pt_idx2] |
 488                 !!(pt_idx2 & (1 << 6)) * rxq->tunnel;
 489         pkts[3]->packet_type = mlx5_ptype_table[pt_idx3] |
 490                 !!(pt_idx3 & (1 << 6)) * rxq->tunnel;
 491
 492         /* Fill flags for checksum and VLAN. */
 493         pinfo = (vector unsigned char)
 494                 vec_and((vector unsigned long)pinfo,
 495                 (vector unsigned long)ptype_ol_mask);
 496         pinfo = vec_perm(cv_flag_sel, zero, pinfo);
 497
 498         /* Locate checksum flags at byte[2:1] and merge with VLAN flags. */
 499         cv_flags = (vector unsigned char)
 500                 vec_sl((vector unsigned int)pinfo,
 501                 (vector unsigned int){9, 9, 9, 9});
 502         cv_flags = (vector unsigned char)
 503                 vec_or((vector unsigned long)pinfo,
 504                 (vector unsigned long)cv_flags);
 505
 506         /* Move back flags to start from byte[0]. */
 507         cv_flags = (vector unsigned char)
 508                 vec_sr((vector unsigned int)cv_flags,
 509                 (vector unsigned int){8, 8, 8, 8});
 510
 511         /* Mask out garbage bits. */
 512         cv_flags = (vector unsigned char)
 513                 vec_and((vector unsigned long)cv_flags,
 514                 (vector unsigned long)cv_mask);
 515
 516         /* Merge to ol_flags. */
 517         ol_flags = (vector unsigned char)
 518                 vec_or((vector unsigned long)ol_flags,
 519                 (vector unsigned long)cv_flags);
 520
 521         /* Merge mbuf_init and ol_flags. */
 522         rearm0 = (vector unsigned char)
 523                 vec_sel((vector unsigned short)mbuf_init,
 524                 (vector unsigned short)
 525                 vec_slo((vector unsigned short)ol_flags,
 526                 (vector unsigned char){64}), rearm_sel_mask);
 527         rearm1 = (vector unsigned char)
 528                 vec_sel((vector unsigned short)mbuf_init,
 529                 (vector unsigned short)
 530                 vec_slo((vector unsigned short)ol_flags,
 531                 (vector unsigned char){32}), rearm_sel_mask);
 532         rearm2 = (vector unsigned char)
 533                 vec_sel((vector unsigned short)mbuf_init,
 534                 (vector unsigned short)ol_flags, rearm_sel_mask);
 535         rearm3 = (vector unsigned char)
 536                 vec_sel((vector unsigned short)mbuf_init,
 537                 (vector unsigned short)
 538                 vec_sro((vector unsigned short)ol_flags,
 539                 (vector unsigned char){32}), rearm_sel_mask);
 540
 541         /* Write 8B rearm_data and 8B ol_flags. */
 542         vec_vsx_st(rearm0, 0,
 543                 (vector unsigned char *)&pkts[0]->rearm_data);
 544         vec_vsx_st(rearm1, 0,
 545                 (vector unsigned char *)&pkts[1]->rearm_data);
 546         vec_vsx_st(rearm2, 0,
 547                 (vector unsigned char *)&pkts[2]->rearm_data);
 548         vec_vsx_st(rearm3, 0,
 549                 (vector unsigned char *)&pkts[3]->rearm_data);
 550 }
 551
 552
 553 /**
 554  * Receive burst of packets. An errored completion also consumes a mbuf, but the
 555  * packet_type is set to be RTE_PTYPE_ALL_MASK. Marked mbufs should be freed
 556  * before returning to application.
 557  *
 558  * @param rxq
 559  *   Pointer to RX queue structure.
 560  * @param[out] pkts
 561  *   Array to store received packets.
 562  * @param pkts_n
 563  *   Maximum number of packets in array.
 564  * @param[out] err
 565  *   Pointer to a flag. Set non-zero value if pkts array has at least one error
 566  *   packet to handle.
 567  * @param[out] no_cq
 568  *  Pointer to a boolean. Set true if no new CQE seen.
 569  *
 570  * @return
 571  *   Number of packets received including errors (<= pkts_n).
 572  */
 573 static inline uint16_t
 574 rxq_burst_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t pkts_n,
 575             uint64_t *err, bool *no_cq)
 576 {
 577         const uint16_t q_n = 1 << rxq->cqe_n;
 578         const uint16_t q_mask = q_n - 1;
 579         volatile struct mlx5_cqe *cq;
 580         struct rte_mbuf **elts;
 581         unsigned int pos;
 582         uint64_t n;
 583         uint16_t repl_n;
 584         uint64_t comp_idx = MLX5_VPMD_DESCS_PER_LOOP;
 585         uint16_t nocmp_n = 0;
 586         uint16_t rcvd_pkt = 0;
 587         unsigned int cq_idx = rxq->cq_ci & q_mask;
 588         unsigned int elts_idx;
 589         unsigned int ownership = !!(rxq->cq_ci & (q_mask + 1));
 590         const vector unsigned char zero = (vector unsigned char){0};
 591         const vector unsigned char ones = vec_splat_u8(-1);
 592         const vector unsigned char owner_check =
 593                 (vector unsigned char)(vector unsigned long){
 594                 0x0100000001000000LL, 0x0100000001000000LL};
 595         const vector unsigned char opcode_check =
 596                 (vector unsigned char)(vector unsigned long){
 597                 0xf0000000f0000000LL, 0xf0000000f0000000LL};
 598         const vector unsigned char format_check =
 599                 (vector unsigned char)(vector unsigned long){
 600                 0x0c0000000c000000LL, 0x0c0000000c000000LL};
 601         const vector unsigned char resp_err_check =
 602                 (vector unsigned char)(vector unsigned long){
 603                 0xe0000000e0000000LL, 0xe0000000e0000000LL};
 604 #ifdef MLX5_PMD_SOFT_COUNTERS
 605         uint32_t rcvd_byte = 0;
 606         /* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */
 607         const vector unsigned char len_shuf_mask = (vector unsigned char){
 608                  1,  0,  5,  4,
 609                  9,  8, 13, 12,
 610                 -1, -1, -1, -1,
 611                 -1, -1, -1, -1};
 612 #endif
 613         /* Mask to shuffle from extracted CQE to mbuf. */
 614         const vector unsigned char shuf_mask = (vector unsigned char){
 615                  5,  4,           /* bswap16, pkt_len */
 616                 -1, -1,           /* zero out 2nd half of pkt_len */
 617                  5,  4,           /* bswap16, data_len */
 618                 11, 10,           /* bswap16, vlan+tci */
 619                 15, 14, 13, 12,   /* bswap32, rss */
 620                  1,  2,  3, -1};  /* fdir.hi */
 621         /* Mask to blend from the last Qword to the first DQword. */
 622         /* Mask to blend from the last Qword to the first DQword. */
 623         const vector unsigned char blend_mask = (vector unsigned char){
 624                 -1,  0,  0,  0,
 625                  0,  0,  0,  0,
 626                 -1, -1, -1, -1,
 627                 -1, -1, -1, -1};
 628         const vector unsigned char crc_adj =
 629                 (vector unsigned char)(vector unsigned short){
 630                 rxq->crc_present * RTE_ETHER_CRC_LEN, 0,
 631                 rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0, 0, 0};
 632         const vector unsigned char flow_mark_adj =
 633                 (vector unsigned char)(vector unsigned int){
 634                 0, 0, 0, rxq->mark * (-1)};
 635         const vector unsigned short cqe_sel_mask1 =
 636                 (vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0};
 637         const vector unsigned short cqe_sel_mask2 =
 638                 (vector unsigned short){0, 0, 0xffff, 0, 0, 0, 0, 0};
 639
 640         MLX5_ASSERT(rxq->sges_n == 0);
 641         MLX5_ASSERT(rxq->cqe_n == rxq->elts_n);
 642         cq = &(*rxq->cqes)[cq_idx];
 643         rte_prefetch0(cq);
 644         rte_prefetch0(cq + 1);
 645         rte_prefetch0(cq + 2);
 646         rte_prefetch0(cq + 3);
 647         pkts_n = RTE_MIN(pkts_n, MLX5_VPMD_RX_MAX_BURST);
 648
 649         repl_n = q_n - (rxq->rq_ci - rxq->rq_pi);
 650         if (repl_n >= rxq->rq_repl_thresh)
 651                 mlx5_rx_replenish_bulk_mbuf(rxq, repl_n);
 652         /* See if there're unreturned mbufs from compressed CQE. */
 653         rcvd_pkt = rxq->decompressed;
 654         if (rcvd_pkt > 0) {
 655                 rcvd_pkt = RTE_MIN(rcvd_pkt, pkts_n);
 656                 rxq_copy_mbuf_v(rxq, pkts, rcvd_pkt);
 657                 rxq->rq_pi += rcvd_pkt;
 658                 rxq->decompressed -= rcvd_pkt;
 659                 pkts += rcvd_pkt;
 660         }
 661         elts_idx = rxq->rq_pi & q_mask;
 662         elts = &(*rxq->elts)[elts_idx];
 663         /* Not to overflow pkts array. */
 664         pkts_n = RTE_ALIGN_FLOOR(pkts_n - rcvd_pkt, MLX5_VPMD_DESCS_PER_LOOP);
 665         /* Not to cross queue end. */
 666         pkts_n = RTE_MIN(pkts_n, q_n - elts_idx);
 667         pkts_n = RTE_MIN(pkts_n, q_n - cq_idx);
 668         if (!pkts_n) {
 669                 *no_cq = !rcvd_pkt;
 670                 return rcvd_pkt;
 671         }
 672         /* At this point, there shouldn't be any remaining packets. */
 673         MLX5_ASSERT(rxq->decompressed == 0);
 674
 675         /*
 676          * A. load first Qword (8bytes) in one loop.
 677          * B. copy 4 mbuf pointers from elts ring to returing pkts.
 678          * C. load remaining CQE data and extract necessary fields.
 679          *    Final 16bytes cqes[] extracted from original 64bytes CQE has the
 680          *    following structure:
 681          *        struct {
 682          *          uint8_t  pkt_info;
 683          *          uint8_t  flow_tag[3];
 684          *          uint16_t byte_cnt;
 685          *          uint8_t  rsvd4;
 686          *          uint8_t  op_own;
 687          *          uint16_t hdr_type_etc;
 688          *          uint16_t vlan_info;
 689          *          uint32_t rx_has_res;
 690          *        } c;
 691          * D. fill in mbuf.
 692          * E. get valid CQEs.
 693          * F. find compressed CQE.
 694          */
 695         for (pos = 0;
 696              pos < pkts_n;
 697              pos += MLX5_VPMD_DESCS_PER_LOOP) {
 698                 vector unsigned char cqes[MLX5_VPMD_DESCS_PER_LOOP];
 699                 vector unsigned char cqe_tmp1, cqe_tmp2;
 700                 vector unsigned char pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
 701                 vector unsigned char op_own, op_own_tmp1, op_own_tmp2;
 702                 vector unsigned char opcode, owner_mask, invalid_mask;
 703                 vector unsigned char comp_mask;
 704                 vector unsigned char mask;
 705 #ifdef MLX5_PMD_SOFT_COUNTERS
 706                 const vector unsigned char lower_half = {
 707                         0, 1, 4, 5, 8, 9, 12, 13,
 708                         16, 17, 20, 21, 24, 25, 28, 29};
 709                 const vector unsigned char upper_half = {
 710                         2, 3, 6, 7, 10, 11, 14, 15,
 711                         18, 19, 22, 23, 26, 27, 30, 31};
 712                 const vector unsigned long shmax = {64, 64};
 713                 vector unsigned char byte_cnt;
 714                 vector unsigned short left, right;
 715                 vector unsigned long lshift;
 716                 vector __attribute__((altivec(bool__)))
 717                         unsigned long shmask;
 718 #endif
 719                 vector unsigned char mbp1, mbp2;
 720                 vector unsigned char p =
 721                         (vector unsigned char)(vector unsigned short){
 722                                 0, 1, 2, 3, 0, 0, 0, 0};
 723                 unsigned int p1, p2, p3;
 724
 725                 /* Prefetch next 4 CQEs. */
 726                 if (pkts_n - pos >= 2 * MLX5_VPMD_DESCS_PER_LOOP) {
 727                         rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP]);
 728                         rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 1]);
 729                         rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 2]);
 730                         rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 3]);
 731                 }
 732
 733                 /* A.0 do not cross the end of CQ. */
 734                 mask = (vector unsigned char)(vector unsigned long){
 735                         (pkts_n - pos) * sizeof(uint16_t) * 8, 0};
 736
 737                 {
 738                         vector unsigned long lshift;
 739                         vector __attribute__((altivec(bool__)))
 740                                 unsigned long shmask;
 741                         const vector unsigned long shmax = {64, 64};
 742
 743                         lshift = vec_splat((vector unsigned long)mask, 0);
 744                         shmask = vec_cmpgt(shmax, lshift);
 745                         mask = (vector unsigned char)
 746                                 vec_sl((vector unsigned long)ones, lshift);
 747                         mask = (vector unsigned char)
 748                                 vec_sel((vector unsigned long)shmask,
 749                                 (vector unsigned long)mask, shmask);
 750                 }
 751
 752                 p = (vector unsigned char)
 753                         vec_andc((vector unsigned long)p,
 754                         (vector unsigned long)mask);
 755
 756                 /* A.1 load cqes. */
 757                 p3 = (unsigned int)((vector unsigned short)p)[3];
 758                 cqes[3] = (vector unsigned char)(vector unsigned long){
 759                         *(__rte_aligned(8) unsigned long *)
 760                         &cq[pos + p3].sop_drop_qpn, 0LL};
 761                 rte_compiler_barrier();
 762
 763                 p2 = (unsigned int)((vector unsigned short)p)[2];
 764                 cqes[2] = (vector unsigned char)(vector unsigned long){
 765                         *(__rte_aligned(8) unsigned long *)
 766                         &cq[pos + p2].sop_drop_qpn, 0LL};
 767                 rte_compiler_barrier();
 768
 769                 /* B.1 load mbuf pointers. */
 770                 mbp1 = (vector unsigned char)vec_vsx_ld(0,
 771                         (signed int const *)&elts[pos]);
 772                 mbp2 = (vector unsigned char)vec_vsx_ld(0,
 773                         (signed int const *)&elts[pos + 2]);
 774
 775                 /* A.1 load a block having op_own. */
 776                 p1 = (unsigned int)((vector unsigned short)p)[1];
 777                 cqes[1] = (vector unsigned char)(vector unsigned long){
 778                         *(__rte_aligned(8) unsigned long *)
 779                         &cq[pos + p1].sop_drop_qpn, 0LL};
 780                 rte_compiler_barrier();
 781
 782                 cqes[0] = (vector unsigned char)(vector unsigned long){
 783                         *(__rte_aligned(8) unsigned long *)
 784                         &cq[pos].sop_drop_qpn, 0LL};
 785                 rte_compiler_barrier();
 786
 787                 /* B.2 copy mbuf pointers. */
 788                 *(vector unsigned char *)&pkts[pos] = mbp1;
 789                 *(vector unsigned char *)&pkts[pos + 2] = mbp2;
 790                 rte_cio_rmb();
 791
 792                 /* C.1 load remaining CQE data and extract necessary fields. */
 793                 cqe_tmp2 = *(vector unsigned char *)
 794                         &cq[pos + p3].pkt_info;
 795                 cqe_tmp1 = *(vector unsigned char *)
 796                         &cq[pos + p2].pkt_info;
 797                 cqes[3] = vec_sel(cqes[3], cqe_tmp2, blend_mask);
 798                 cqes[2] = vec_sel(cqes[2], cqe_tmp1, blend_mask);
 799                 cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0,
 800                         (signed int const *)&cq[pos + p3].csum);
 801                 cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0,
 802                         (signed int const *)&cq[pos + p2].csum);
 803                 cqes[3] = (vector unsigned char)
 804                         vec_sel((vector unsigned short)cqes[3],
 805                         (vector unsigned short)cqe_tmp2, cqe_sel_mask1);
 806                 cqes[2] = (vector unsigned char)
 807                         vec_sel((vector unsigned short)cqes[2],
 808                         (vector unsigned short)cqe_tmp1, cqe_sel_mask1);
 809                 cqe_tmp2 = (vector unsigned char)(vector unsigned long){
 810                         *(__rte_aligned(8) unsigned long *)
 811                         &cq[pos + p3].rsvd3[9], 0LL};
 812                 cqe_tmp1 = (vector unsigned char)(vector unsigned long){
 813                         *(__rte_aligned(8) unsigned long *)
 814                         &cq[pos + p2].rsvd3[9], 0LL};
 815                 cqes[3] = (vector unsigned char)
 816                         vec_sel((vector unsigned short)cqes[3],
 817                         (vector unsigned short)cqe_tmp2,
 818                         (vector unsigned short)cqe_sel_mask2);
 819                 cqes[2] = (vector unsigned char)
 820                         vec_sel((vector unsigned short)cqes[2],
 821                         (vector unsigned short)cqe_tmp1,
 822                         (vector unsigned short)cqe_sel_mask2);
 823
 824                 /* C.2 generate final structure for mbuf with swapping bytes. */
 825                 pkt_mb3 = vec_perm(cqes[3], zero, shuf_mask);
 826                 pkt_mb2 = vec_perm(cqes[2], zero, shuf_mask);
 827
 828                 /* C.3 adjust CRC length. */
 829                 pkt_mb3 = (vector unsigned char)
 830                         ((vector unsigned short)pkt_mb3 -
 831                         (vector unsigned short)crc_adj);
 832                 pkt_mb2 = (vector unsigned char)
 833                         ((vector unsigned short)pkt_mb2 -
 834                         (vector unsigned short)crc_adj);
 835
 836                 /* C.4 adjust flow mark. */
 837                 pkt_mb3 = (vector unsigned char)
 838                         ((vector unsigned int)pkt_mb3 +
 839                         (vector unsigned int)flow_mark_adj);
 840                 pkt_mb2 = (vector unsigned char)
 841                         ((vector unsigned int)pkt_mb2 +
 842                         (vector unsigned int)flow_mark_adj);
 843
 844                 /* D.1 fill in mbuf - rx_descriptor_fields1. */
 845                 *(vector unsigned char *)
 846                         &pkts[pos + 3]->pkt_len = pkt_mb3;
 847                 *(vector unsigned char *)
 848                         &pkts[pos + 2]->pkt_len = pkt_mb2;
 849
 850                 /* E.1 extract op_own field. */
 851                 op_own_tmp2 = (vector unsigned char)
 852                         vec_mergeh((vector unsigned int)cqes[2],
 853                         (vector unsigned int)cqes[3]);
 854
 855                 /* C.1 load remaining CQE data and extract necessary fields. */
 856                 cqe_tmp2 = *(vector unsigned char *)
 857                         &cq[pos + p1].pkt_info;
 858                 cqe_tmp1 = *(vector unsigned char *)
 859                         &cq[pos].pkt_info;
 860                 cqes[1] = vec_sel(cqes[1], cqe_tmp2, blend_mask);
 861                 cqes[0] = vec_sel(cqes[0], cqe_tmp2, blend_mask);
 862                 cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0,
 863                         (signed int const *)&cq[pos + p1].csum);
 864                 cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0,
 865                         (signed int const *)&cq[pos].csum);
 866                 cqes[1] = (vector unsigned char)
 867                         vec_sel((vector unsigned short)cqes[1],
 868                         (vector unsigned short)cqe_tmp2, cqe_sel_mask1);
 869                 cqes[0] = (vector unsigned char)
 870                         vec_sel((vector unsigned short)cqes[0],
 871                         (vector unsigned short)cqe_tmp1, cqe_sel_mask1);
 872                 cqe_tmp2 = (vector unsigned char)(vector unsigned long){
 873                         *(__rte_aligned(8) unsigned long *)
 874                         &cq[pos + p1].rsvd3[9], 0LL};
 875                 cqe_tmp1 = (vector unsigned char)(vector unsigned long){
 876                         *(__rte_aligned(8) unsigned long *)
 877                         &cq[pos].rsvd3[9], 0LL};
 878                 cqes[1] = (vector unsigned char)
 879                         vec_sel((vector unsigned short)cqes[1],
 880                         (vector unsigned short)cqe_tmp2, cqe_sel_mask2);
 881                 cqes[0] = (vector unsigned char)
 882                         vec_sel((vector unsigned short)cqes[0],
 883                         (vector unsigned short)cqe_tmp1, cqe_sel_mask2);
 884
 885                 /* C.2 generate final structure for mbuf with swapping bytes. */
 886                 pkt_mb1 = vec_perm(cqes[1], zero, shuf_mask);
 887                 pkt_mb0 = vec_perm(cqes[0], zero, shuf_mask);
 888
 889                 /* C.3 adjust CRC length. */
 890                 pkt_mb1 = (vector unsigned char)
 891                         ((vector unsigned short)pkt_mb1 -
 892                         (vector unsigned short)crc_adj);
 893                 pkt_mb0 = (vector unsigned char)
 894                         ((vector unsigned short)pkt_mb0 -
 895                         (vector unsigned short)crc_adj);
 896
 897                 /* C.4 adjust flow mark. */
 898                 pkt_mb1 = (vector unsigned char)
 899                         ((vector unsigned int)pkt_mb1 +
 900                         (vector unsigned int)flow_mark_adj);
 901                 pkt_mb0 = (vector unsigned char)
 902                         ((vector unsigned int)pkt_mb0 +
 903                         (vector unsigned int)flow_mark_adj);
 904
 905                 /* E.1 extract op_own byte. */
 906                 op_own_tmp1 = (vector unsigned char)
 907                         vec_mergeh((vector unsigned int)cqes[0],
 908                         (vector unsigned int)cqes[1]);
 909                 op_own = (vector unsigned char)
 910                         vec_mergel((vector unsigned long)op_own_tmp1,
 911                         (vector unsigned long)op_own_tmp2);
 912
 913                 /* D.1 fill in mbuf - rx_descriptor_fields1. */
 914                 *(vector unsigned char *)
 915                         &pkts[pos + 1]->pkt_len = pkt_mb1;
 916                 *(vector unsigned char *)
 917                         &pkts[pos]->pkt_len = pkt_mb0;
 918
 919                 /* E.2 flip owner bit to mark CQEs from last round. */
 920                 owner_mask = (vector unsigned char)
 921                         vec_and((vector unsigned long)op_own,
 922                         (vector unsigned long)owner_check);
 923                 if (ownership)
 924                         owner_mask = (vector unsigned char)
 925                                 vec_xor((vector unsigned long)owner_mask,
 926                                 (vector unsigned long)owner_check);
 927                 owner_mask = (vector unsigned char)
 928                         vec_cmpeq((vector unsigned int)owner_mask,
 929                         (vector unsigned int)owner_check);
 930                 owner_mask = (vector unsigned char)
 931                         vec_packs((vector unsigned int)owner_mask,
 932                         (vector unsigned int)zero);
 933
 934                 /* E.3 get mask for invalidated CQEs. */
 935                 opcode = (vector unsigned char)
 936                         vec_and((vector unsigned long)op_own,
 937                         (vector unsigned long)opcode_check);
 938                 invalid_mask = (vector unsigned char)
 939                         vec_cmpeq((vector unsigned int)opcode_check,
 940                         (vector unsigned int)opcode);
 941                 invalid_mask = (vector unsigned char)
 942                         vec_packs((vector unsigned int)invalid_mask,
 943                         (vector unsigned int)zero);
 944
 945                 /* E.4 mask out beyond boundary. */
 946                 invalid_mask = (vector unsigned char)
 947                         vec_or((vector unsigned long)invalid_mask,
 948                         (vector unsigned long)mask);
 949
 950                 /* E.5 merge invalid_mask with invalid owner. */
 951                 invalid_mask = (vector unsigned char)
 952                         vec_or((vector unsigned long)invalid_mask,
 953                         (vector unsigned long)owner_mask);
 954
 955                 /* F.1 find compressed CQE format. */
 956                 comp_mask = (vector unsigned char)
 957                         vec_and((vector unsigned long)op_own,
 958                         (vector unsigned long)format_check);
 959                 comp_mask = (vector unsigned char)
 960                         vec_cmpeq((vector unsigned int)comp_mask,
 961                         (vector unsigned int)format_check);
 962                 comp_mask = (vector unsigned char)
 963                         vec_packs((vector unsigned int)comp_mask,
 964                         (vector unsigned int)zero);
 965
 966                 /* F.2 mask out invalid entries. */
 967                 comp_mask = (vector unsigned char)
 968                         vec_andc((vector unsigned long)comp_mask,
 969                         (vector unsigned long)invalid_mask);
 970                 comp_idx = ((vector unsigned long)comp_mask)[0];
 971
 972                 /* F.3 get the first compressed CQE. */
 973                 comp_idx = comp_idx ? __builtin_ctzll(comp_idx) /
 974                         (sizeof(uint16_t) * 8) : MLX5_VPMD_DESCS_PER_LOOP;
 975
 976                 /* E.6 mask out entries after the compressed CQE. */
 977                 mask = (vector unsigned char)(vector unsigned long){
 978                         (comp_idx * sizeof(uint16_t) * 8), 0};
 979                 lshift = vec_splat((vector unsigned long)mask, 0);
 980                 shmask = vec_cmpgt(shmax, lshift);
 981                 mask = (vector unsigned char)
 982                         vec_sl((vector unsigned long)ones, lshift);
 983                 mask = (vector unsigned char)
 984                         vec_sel((vector unsigned long)shmask,
 985                         (vector unsigned long)mask, shmask);
 986                 invalid_mask = (vector unsigned char)
 987                         vec_or((vector unsigned long)invalid_mask,
 988                         (vector unsigned long)mask);
 989
 990                 /* E.7 count non-compressed valid CQEs. */
 991                 n = ((vector unsigned long)invalid_mask)[0];
 992                 n = n ? __builtin_ctzll(n) / (sizeof(uint16_t) * 8) :
 993                         MLX5_VPMD_DESCS_PER_LOOP;
 994                 nocmp_n += n;
 995
 996                 /* D.2 get the final invalid mask. */
 997                 mask = (vector unsigned char)(vector unsigned long){
 998                         (n * sizeof(uint16_t) * 8), 0};
 999                 lshift = vec_splat((vector unsigned long)mask, 0);
1000                 shmask = vec_cmpgt(shmax, lshift);
1001                 mask = (vector unsigned char)
1002                         vec_sl((vector unsigned long)ones, lshift);
1003                 mask = (vector unsigned char)
1004                         vec_sel((vector unsigned long)shmask,
1005                         (vector unsigned long)mask, shmask);
1006                 invalid_mask = (vector unsigned char)
1007                         vec_or((vector unsigned long)invalid_mask,
1008                         (vector unsigned long)mask);
1009
1010                 /* D.3 check error in opcode. */
1011                 opcode = (vector unsigned char)
1012                         vec_cmpeq((vector unsigned int)resp_err_check,
1013                         (vector unsigned int)opcode);
1014                 opcode = (vector unsigned char)
1015                         vec_packs((vector unsigned int)opcode,
1016                         (vector unsigned int)zero);
1017                 opcode = (vector unsigned char)
1018                         vec_andc((vector unsigned long)opcode,
1019                         (vector unsigned long)invalid_mask);
1020
1021                 /* D.4 mark if any error is set */
1022                 *err |= ((vector unsigned long)opcode)[0];
1023
1024                 /* D.5 fill in mbuf - rearm_data and packet_type. */
1025                 rxq_cq_to_ptype_oflags_v(rxq, cqes, opcode, &pkts[pos]);
1026                 if (rxq->hw_timestamp) {
1027                         pkts[pos]->timestamp =
1028                                 rte_be_to_cpu_64(cq[pos].timestamp);
1029                         pkts[pos + 1]->timestamp =
1030                                 rte_be_to_cpu_64(cq[pos + p1].timestamp);
1031                         pkts[pos + 2]->timestamp =
1032                                 rte_be_to_cpu_64(cq[pos + p2].timestamp);
1033                         pkts[pos + 3]->timestamp =
1034                                 rte_be_to_cpu_64(cq[pos + p3].timestamp);
1035                 }
1036                 if (rxq->dynf_meta) {
1037                         uint64_t flag = rxq->flow_meta_mask;
1038                         int32_t offs = rxq->flow_meta_offset;
1039                         uint32_t metadata;
1040
1041                         /* This code is subject for futher optimization. */
1042                         metadata = cq[pos].flow_table_metadata;
1043                         *RTE_MBUF_DYNFIELD(pkts[pos], offs, uint32_t *) =
1044                                                                 metadata;
1045                         pkts[pos]->ol_flags |= metadata ? flag : 0ULL;
1046                         metadata = cq[pos + 1].flow_table_metadata;
1047                         *RTE_MBUF_DYNFIELD(pkts[pos + 1], offs, uint32_t *) =
1048                                                                 metadata;
1049                         pkts[pos + 1]->ol_flags |= metadata ? flag : 0ULL;
1050                         metadata = cq[pos + 2].flow_table_metadata;
1051                         *RTE_MBUF_DYNFIELD(pkts[pos + 2], offs, uint32_t *) =
1052                                                                 metadata;
1053                         pkts[pos + 2]->ol_flags |= metadata ? flag : 0ULL;
1054                         metadata = cq[pos + 3].flow_table_metadata;
1055                         *RTE_MBUF_DYNFIELD(pkts[pos + 3], offs, uint32_t *) =
1056                                                                 metadata;
1057                         pkts[pos + 3]->ol_flags |= metadata ? flag : 0ULL;
1058                 }
1059 #ifdef MLX5_PMD_SOFT_COUNTERS
1060                 /* Add up received bytes count. */
1061                 byte_cnt = vec_perm(op_own, zero, len_shuf_mask);
1062                 byte_cnt = (vector unsigned char)
1063                         vec_andc((vector unsigned long)byte_cnt,
1064                         (vector unsigned long)invalid_mask);
1065                 left = vec_perm((vector unsigned short)byte_cnt,
1066                         (vector unsigned short)zero, lower_half);
1067                 right = vec_perm((vector unsigned short)byte_cnt,
1068                         (vector unsigned short)zero, upper_half);
1069                 byte_cnt = (vector unsigned char)vec_add(left, right);
1070                 left = vec_perm((vector unsigned short)byte_cnt,
1071                         (vector unsigned short)zero, lower_half);
1072                 right = vec_perm((vector unsigned short)byte_cnt,
1073                         (vector unsigned short)zero, upper_half);
1074                 byte_cnt = (vector unsigned char)vec_add(left, right);
1075                 rcvd_byte += ((vector unsigned long)byte_cnt)[0];
1076 #endif
1077
1078                 /*
1079                  * Break the loop unless more valid CQE is expected, or if
1080                  * there's a compressed CQE.
1081                  */
1082                 if (n != MLX5_VPMD_DESCS_PER_LOOP)
1083                         break;
1084         }
1085         /* If no new CQE seen, return without updating cq_db. */
1086         if (unlikely(!nocmp_n && comp_idx == MLX5_VPMD_DESCS_PER_LOOP)) {
1087                 *no_cq = true;
1088                 return rcvd_pkt;
1089         }
1090         /* Update the consumer indexes for non-compressed CQEs. */
1091         MLX5_ASSERT(nocmp_n <= pkts_n);
1092         rxq->cq_ci += nocmp_n;
1093         rxq->rq_pi += nocmp_n;
1094         rcvd_pkt += nocmp_n;
1095 #ifdef MLX5_PMD_SOFT_COUNTERS
1096         rxq->stats.ipackets += nocmp_n;
1097         rxq->stats.ibytes += rcvd_byte;
1098 #endif
1099         /* Decompress the last CQE if compressed. */
1100         if (comp_idx < MLX5_VPMD_DESCS_PER_LOOP && comp_idx == n) {
1101                 MLX5_ASSERT(comp_idx == (nocmp_n % MLX5_VPMD_DESCS_PER_LOOP));
1102                 rxq->decompressed =
1103                         rxq_cq_decompress_v(rxq, &cq[nocmp_n], &elts[nocmp_n]);
1104                 /* Return more packets if needed. */
1105                 if (nocmp_n < pkts_n) {
1106                         uint16_t n = rxq->decompressed;
1107
1108                         n = RTE_MIN(n, pkts_n - nocmp_n);
1109                         rxq_copy_mbuf_v(rxq, &pkts[nocmp_n], n);
1110                         rxq->rq_pi += n;
1111                         rcvd_pkt += n;
1112                         rxq->decompressed -= n;
1113                 }
1114         }
1115         rte_compiler_barrier();
1116         *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
1117         *no_cq = !rcvd_pkt;
1118         return rcvd_pkt;
1119 }
1120
1121 #endif /* RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_ */