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                 /* A.1 load mCQEs into a 128bit register. */
 162                 mcqe1 = (vector unsigned char)vec_vsx_ld(0,
 163                         (signed int const *)&mcq[pos % 8]);
 164                 mcqe2 = (vector unsigned char)vec_vsx_ld(0,
 165                         (signed int const *)&mcq[pos % 8 + 2]);
 166
 167                 /* B.1 store rearm data to mbuf. */
 168                 *(vector unsigned char *)
 169                         &elts[pos]->rearm_data = rearm;
 170                 *(vector unsigned char *)
 171                         &elts[pos + 1]->rearm_data = rearm;
 172
 173                 /* C.1 combine data from mCQEs with rx_descriptor_fields1. */
 174                 rxdf1 = vec_perm(mcqe1, zero, shuf_mask1);
 175                 rxdf2 = vec_perm(mcqe1, zero, shuf_mask2);
 176                 rxdf1 = (vector unsigned char)
 177                         ((vector unsigned short)rxdf1 -
 178                         (vector unsigned short)crc_adj);
 179                 rxdf2 = (vector unsigned char)
 180                         ((vector unsigned short)rxdf2 -
 181                         (vector unsigned short)crc_adj);
 182                 rxdf1 = (vector unsigned char)
 183                         vec_sel((vector unsigned short)rxdf1,
 184                         (vector unsigned short)rxdf, rxdf_sel_mask);
 185                 rxdf2 = (vector unsigned char)
 186                         vec_sel((vector unsigned short)rxdf2,
 187                         (vector unsigned short)rxdf, rxdf_sel_mask);
 188
 189                 /* D.1 store rx_descriptor_fields1. */
 190                 *(vector unsigned char *)
 191                         &elts[pos]->rx_descriptor_fields1 = rxdf1;
 192                 *(vector unsigned char *)
 193                         &elts[pos + 1]->rx_descriptor_fields1 = rxdf2;
 194
 195                 /* B.1 store rearm data to mbuf. */
 196                 *(vector unsigned char *)
 197                         &elts[pos + 2]->rearm_data = rearm;
 198                 *(vector unsigned char *)
 199                         &elts[pos + 3]->rearm_data = rearm;
 200
 201                 /* C.1 combine data from mCQEs with rx_descriptor_fields1. */
 202                 rxdf1 = vec_perm(mcqe2, zero, shuf_mask1);
 203                 rxdf2 = vec_perm(mcqe2, zero, shuf_mask2);
 204                 rxdf1 = (vector unsigned char)
 205                         ((vector unsigned short)rxdf1 -
 206                         (vector unsigned short)crc_adj);
 207                 rxdf2 = (vector unsigned char)
 208                         ((vector unsigned short)rxdf2 -
 209                         (vector unsigned short)crc_adj);
 210                 rxdf1 = (vector unsigned char)
 211                         vec_sel((vector unsigned short)rxdf1,
 212                         (vector unsigned short)rxdf, rxdf_sel_mask);
 213                 rxdf2 = (vector unsigned char)
 214                         vec_sel((vector unsigned short)rxdf2,
 215                         (vector unsigned short)rxdf, rxdf_sel_mask);
 216
 217                 /* D.1 store rx_descriptor_fields1. */
 218                 *(vector unsigned char *)
 219                         &elts[pos + 2]->rx_descriptor_fields1 = rxdf1;
 220                 *(vector unsigned char *)
 221                         &elts[pos + 3]->rx_descriptor_fields1 = rxdf2;
 222
 223 #ifdef MLX5_PMD_SOFT_COUNTERS
 224                 invalid_mask = (vector unsigned char)(vector unsigned long){
 225                         (mcqe_n - pos) * sizeof(uint16_t) * 8, 0};
 226
 227                 lshift =
 228                         vec_splat((vector unsigned long)invalid_mask, 0);
 229                 shmask = vec_cmpgt(shmax, lshift);
 230                 invalid_mask = (vector unsigned char)
 231                         vec_sl((vector unsigned long)ones, lshift);
 232                 invalid_mask = (vector unsigned char)
 233                         vec_sel((vector unsigned long)shmask,
 234                         (vector unsigned long)invalid_mask, shmask);
 235
 236                 mcqe1 = (vector unsigned char)
 237                         vec_sro((vector unsigned short)mcqe1,
 238                         (vector unsigned char){32}),
 239                 byte_cnt = (vector unsigned char)
 240                         vec_sel((vector unsigned short)mcqe1,
 241                         (vector unsigned short)mcqe2, mcqe_sel_mask);
 242                 byte_cnt = vec_perm(byte_cnt, zero, len_shuf_mask);
 243                 byte_cnt = (vector unsigned char)
 244                         vec_andc((vector unsigned long)byte_cnt,
 245                         (vector unsigned long)invalid_mask);
 246                 left = vec_perm((vector unsigned short)byte_cnt,
 247                         (vector unsigned short)zero, lower_half);
 248                 right = vec_perm((vector unsigned short)byte_cnt,
 249                         (vector unsigned short)zero, upper_half);
 250                 byte_cnt = (vector unsigned char)vec_add(left, right);
 251                 left = vec_perm((vector unsigned short)byte_cnt,
 252                         (vector unsigned short)zero, lower_half);
 253                 right = vec_perm((vector unsigned short)byte_cnt,
 254                         (vector unsigned short)zero, upper_half);
 255                 byte_cnt = (vector unsigned char)vec_add(left, right);
 256                 rcvd_byte += ((vector unsigned long)byte_cnt)[0];
 257 #endif
 258
 259                 if (rxq->mark) {
 260                         /* E.1 store flow tag (rte_flow mark). */
 261                         elts[pos]->hash.fdir.hi = flow_tag;
 262                         elts[pos + 1]->hash.fdir.hi = flow_tag;
 263                         elts[pos + 2]->hash.fdir.hi = flow_tag;
 264                         elts[pos + 3]->hash.fdir.hi = flow_tag;
 265                 }
 266                 if (rxq->dynf_meta) {
 267                         int32_t offs = rxq->flow_meta_offset;
 268                         const uint32_t meta =
 269                                 *RTE_MBUF_DYNFIELD(t_pkt, offs, uint32_t *);
 270
 271                         /* Check if title packet has valid metadata. */
 272                         if (meta) {
 273                                 MLX5_ASSERT(t_pkt->ol_flags &
 274                                             rxq->flow_meta_mask);
 275                                 *RTE_MBUF_DYNFIELD(elts[pos], offs,
 276                                                         uint32_t *) = meta;
 277                                 *RTE_MBUF_DYNFIELD(elts[pos + 1], offs,
 278                                                         uint32_t *) = meta;
 279                                 *RTE_MBUF_DYNFIELD(elts[pos + 2], offs,
 280                                                         uint32_t *) = meta;
 281                                 *RTE_MBUF_DYNFIELD(elts[pos + 3], offs,
 282                                                         uint32_t *) = meta;
 283                         }
 284                 }
 285
 286                 pos += MLX5_VPMD_DESCS_PER_LOOP;
 287                 /* Move to next CQE and invalidate consumed CQEs. */
 288                 if (!(pos & 0x7) && pos < mcqe_n) {
 289                         if (pos + 8 < mcqe_n)
 290                                 rte_prefetch0((void *)(cq + pos + 8));
 291                         mcq = (void *)&(cq + pos)->pkt_info;
 292                         for (i = 0; i < 8; ++i)
 293                                 cq[inv++].op_own = MLX5_CQE_INVALIDATE;
 294                 }
 295         }
 296
 297         /* Invalidate the rest of CQEs. */
 298         for (; inv < mcqe_n; ++inv)
 299                 cq[inv].op_own = MLX5_CQE_INVALIDATE;
 300
 301 #ifdef MLX5_PMD_SOFT_COUNTERS
 302         rxq->stats.ipackets += mcqe_n;
 303         rxq->stats.ibytes += rcvd_byte;
 304 #endif
 305
 306         rxq->cq_ci += mcqe_n;
 307         return mcqe_n;
 308 }
 309
 310 /**
 311  * Calculate packet type and offload flag for mbuf and store it.
 312  *
 313  * @param rxq
 314  *   Pointer to RX queue structure.
 315  * @param cqes[4]
 316  *   Array of four 16bytes completions extracted from the original completion
 317  *   descriptor.
 318  * @param op_err
 319  *   Opcode vector having responder error status. Each field is 4B.
 320  * @param pkts
 321  *   Pointer to array of packets to be filled.
 322  */
 323 static inline void
 324 rxq_cq_to_ptype_oflags_v(struct mlx5_rxq_data *rxq,
 325                 vector unsigned char cqes[4], vector unsigned char op_err,
 326                 struct rte_mbuf **pkts)
 327 {
 328         vector unsigned char pinfo0, pinfo1;
 329         vector unsigned char pinfo, ptype;
 330         vector unsigned char ol_flags = (vector unsigned char)
 331                 (vector unsigned int){
 332                         rxq->rss_hash * PKT_RX_RSS_HASH |
 333                                 rxq->hw_timestamp * PKT_RX_TIMESTAMP,
 334                         rxq->rss_hash * PKT_RX_RSS_HASH |
 335                                 rxq->hw_timestamp * PKT_RX_TIMESTAMP,
 336                         rxq->rss_hash * PKT_RX_RSS_HASH |
 337                                 rxq->hw_timestamp * PKT_RX_TIMESTAMP,
 338                         rxq->rss_hash * PKT_RX_RSS_HASH |
 339                                 rxq->hw_timestamp * PKT_RX_TIMESTAMP};
 340         vector unsigned char cv_flags;
 341         const vector unsigned char zero = (vector unsigned char){0};
 342         const vector unsigned char ptype_mask =
 343                 (vector unsigned char)(vector unsigned int){
 344                 0x0000fd06, 0x0000fd06, 0x0000fd06, 0x0000fd06};
 345         const vector unsigned char ptype_ol_mask =
 346                 (vector unsigned char)(vector unsigned int){
 347                 0x00000106, 0x00000106, 0x00000106, 0x00000106};
 348         const vector unsigned char pinfo_mask =
 349                 (vector unsigned char)(vector unsigned int){
 350                 0x00000003, 0x00000003, 0x00000003, 0x00000003};
 351         const vector unsigned char cv_flag_sel = (vector unsigned char){
 352                 0, (uint8_t)(PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED),
 353                 (uint8_t)(PKT_RX_IP_CKSUM_GOOD >> 1), 0,
 354                 (uint8_t)(PKT_RX_L4_CKSUM_GOOD >> 1), 0,
 355                 (uint8_t)((PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD) >> 1),
 356                 0, 0, 0, 0, 0, 0, 0, 0, 0};
 357         const vector unsigned char cv_mask =
 358                 (vector unsigned char)(vector unsigned int){
 359                 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
 360                 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 361                 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
 362                 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 363                 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
 364                 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 365                 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD |
 366                 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED};
 367         const vector unsigned char mbuf_init =
 368                 (vector unsigned char)vec_vsx_ld
 369                         (0, (vector unsigned char *)&rxq->mbuf_initializer);
 370         const vector unsigned short rearm_sel_mask =
 371                 (vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0};
 372         vector unsigned char rearm0, rearm1, rearm2, rearm3;
 373         uint8_t pt_idx0, pt_idx1, pt_idx2, pt_idx3;
 374
 375         /* Extract pkt_info field. */
 376         pinfo0 = (vector unsigned char)
 377                 vec_mergeh((vector unsigned int)cqes[0],
 378                 (vector unsigned int)cqes[1]);
 379         pinfo1 = (vector unsigned char)
 380                 vec_mergeh((vector unsigned int)cqes[2],
 381                 (vector unsigned int)cqes[3]);
 382         pinfo = (vector unsigned char)
 383                 vec_mergeh((vector unsigned long)pinfo0,
 384                 (vector unsigned long)pinfo1);
 385
 386         /* Extract hdr_type_etc field. */
 387         pinfo0 = (vector unsigned char)
 388                 vec_mergel((vector unsigned int)cqes[0],
 389                 (vector unsigned int)cqes[1]);
 390         pinfo1 = (vector unsigned char)
 391                 vec_mergel((vector unsigned int)cqes[2],
 392                 (vector unsigned int)cqes[3]);
 393         ptype = (vector unsigned char)
 394                 vec_mergeh((vector unsigned long)pinfo0,
 395                 (vector unsigned long)pinfo1);
 396
 397         if (rxq->mark) {
 398                 const vector unsigned char pinfo_ft_mask =
 399                         (vector unsigned char)(vector unsigned int){
 400                         0xffffff00, 0xffffff00, 0xffffff00, 0xffffff00};
 401                 const vector unsigned char fdir_flags =
 402                         (vector unsigned char)(vector unsigned int){
 403                         PKT_RX_FDIR, PKT_RX_FDIR,
 404                         PKT_RX_FDIR, PKT_RX_FDIR};
 405                 vector unsigned char fdir_id_flags =
 406                         (vector unsigned char)(vector unsigned int){
 407                         PKT_RX_FDIR_ID, PKT_RX_FDIR_ID,
 408                         PKT_RX_FDIR_ID, PKT_RX_FDIR_ID};
 409                 vector unsigned char flow_tag, invalid_mask;
 410
 411                 flow_tag = (vector unsigned char)
 412                         vec_and((vector unsigned long)pinfo,
 413                         (vector unsigned long)pinfo_ft_mask);
 414
 415                 /* Check if flow tag is non-zero then set PKT_RX_FDIR. */
 416                 invalid_mask = (vector unsigned char)
 417                         vec_cmpeq((vector unsigned int)flow_tag,
 418                         (vector unsigned int)zero);
 419                 ol_flags = (vector unsigned char)
 420                         vec_or((vector unsigned long)ol_flags,
 421                         (vector unsigned long)
 422                         vec_andc((vector unsigned long)fdir_flags,
 423                         (vector unsigned long)invalid_mask));
 424
 425                 /* Mask out invalid entries. */
 426                 fdir_id_flags = (vector unsigned char)
 427                         vec_andc((vector unsigned long)fdir_id_flags,
 428                         (vector unsigned long)invalid_mask);
 429
 430                 /* Check if flow tag MLX5_FLOW_MARK_DEFAULT. */
 431                 ol_flags = (vector unsigned char)
 432                         vec_or((vector unsigned long)ol_flags,
 433                         (vector unsigned long)
 434                         vec_andc((vector unsigned long)fdir_id_flags,
 435                         (vector unsigned long)
 436                         vec_cmpeq((vector unsigned int)flow_tag,
 437                         (vector unsigned int)pinfo_ft_mask)));
 438         }
 439         /*
 440          * Merge the two fields to generate the following:
 441          * bit[1]     = l3_ok
 442          * bit[2]     = l4_ok
 443          * bit[8]     = cv
 444          * bit[11:10] = l3_hdr_type
 445          * bit[14:12] = l4_hdr_type
 446          * bit[15]    = ip_frag
 447          * bit[16]    = tunneled
 448          * bit[17]    = outer_l3_type
 449          */
 450         ptype = (vector unsigned char)
 451                 vec_and((vector unsigned long)ptype,
 452                 (vector unsigned long)ptype_mask);
 453         pinfo = (vector unsigned char)
 454                 vec_and((vector unsigned long)pinfo,
 455                 (vector unsigned long)pinfo_mask);
 456         pinfo = (vector unsigned char)
 457                 vec_sl((vector unsigned int)pinfo,
 458                 (vector unsigned int){16, 16, 16, 16});
 459
 460         /* Make pinfo has merged fields for ol_flags calculation. */
 461         pinfo = (vector unsigned char)
 462                 vec_or((vector unsigned long)ptype,
 463                 (vector unsigned long)pinfo);
 464         ptype = (vector unsigned char)
 465                 vec_sr((vector unsigned int)pinfo,
 466                 (vector unsigned int){10, 10, 10, 10});
 467         ptype = (vector unsigned char)
 468                 vec_packs((vector unsigned int)ptype,
 469                 (vector unsigned int)zero);
 470
 471         /* Errored packets will have RTE_PTYPE_ALL_MASK. */
 472         op_err = (vector unsigned char)
 473                 vec_sr((vector unsigned short)op_err,
 474                 (vector unsigned short){8, 8, 8, 8, 8, 8, 8, 8});
 475         ptype = (vector unsigned char)
 476                 vec_or((vector unsigned long)ptype,
 477                 (vector unsigned long)op_err);
 478
 479         pt_idx0 = (uint8_t)((vector unsigned char)ptype)[0];
 480         pt_idx1 = (uint8_t)((vector unsigned char)ptype)[2];
 481         pt_idx2 = (uint8_t)((vector unsigned char)ptype)[4];
 482         pt_idx3 = (uint8_t)((vector unsigned char)ptype)[6];
 483
 484         pkts[0]->packet_type = mlx5_ptype_table[pt_idx0] |
 485                 !!(pt_idx0 & (1 << 6)) * rxq->tunnel;
 486         pkts[1]->packet_type = mlx5_ptype_table[pt_idx1] |
 487                 !!(pt_idx1 & (1 << 6)) * rxq->tunnel;
 488         pkts[2]->packet_type = mlx5_ptype_table[pt_idx2] |
 489                 !!(pt_idx2 & (1 << 6)) * rxq->tunnel;
 490         pkts[3]->packet_type = mlx5_ptype_table[pt_idx3] |
 491                 !!(pt_idx3 & (1 << 6)) * rxq->tunnel;
 492
 493         /* Fill flags for checksum and VLAN. */
 494         pinfo = (vector unsigned char)
 495                 vec_and((vector unsigned long)pinfo,
 496                 (vector unsigned long)ptype_ol_mask);
 497         pinfo = vec_perm(cv_flag_sel, zero, pinfo);
 498
 499         /* Locate checksum flags at byte[2:1] and merge with VLAN flags. */
 500         cv_flags = (vector unsigned char)
 501                 vec_sl((vector unsigned int)pinfo,
 502                 (vector unsigned int){9, 9, 9, 9});
 503         cv_flags = (vector unsigned char)
 504                 vec_or((vector unsigned long)pinfo,
 505                 (vector unsigned long)cv_flags);
 506
 507         /* Move back flags to start from byte[0]. */
 508         cv_flags = (vector unsigned char)
 509                 vec_sr((vector unsigned int)cv_flags,
 510                 (vector unsigned int){8, 8, 8, 8});
 511
 512         /* Mask out garbage bits. */
 513         cv_flags = (vector unsigned char)
 514                 vec_and((vector unsigned long)cv_flags,
 515                 (vector unsigned long)cv_mask);
 516
 517         /* Merge to ol_flags. */
 518         ol_flags = (vector unsigned char)
 519                 vec_or((vector unsigned long)ol_flags,
 520                 (vector unsigned long)cv_flags);
 521
 522         /* Merge mbuf_init and ol_flags. */
 523         rearm0 = (vector unsigned char)
 524                 vec_sel((vector unsigned short)mbuf_init,
 525                 (vector unsigned short)
 526                 vec_slo((vector unsigned short)ol_flags,
 527                 (vector unsigned char){64}), rearm_sel_mask);
 528         rearm1 = (vector unsigned char)
 529                 vec_sel((vector unsigned short)mbuf_init,
 530                 (vector unsigned short)
 531                 vec_slo((vector unsigned short)ol_flags,
 532                 (vector unsigned char){32}), rearm_sel_mask);
 533         rearm2 = (vector unsigned char)
 534                 vec_sel((vector unsigned short)mbuf_init,
 535                 (vector unsigned short)ol_flags, rearm_sel_mask);
 536         rearm3 = (vector unsigned char)
 537                 vec_sel((vector unsigned short)mbuf_init,
 538                 (vector unsigned short)
 539                 vec_sro((vector unsigned short)ol_flags,
 540                 (vector unsigned char){32}), rearm_sel_mask);
 541
 542         /* Write 8B rearm_data and 8B ol_flags. */
 543         vec_vsx_st(rearm0, 0,
 544                 (vector unsigned char *)&pkts[0]->rearm_data);
 545         vec_vsx_st(rearm1, 0,
 546                 (vector unsigned char *)&pkts[1]->rearm_data);
 547         vec_vsx_st(rearm2, 0,
 548                 (vector unsigned char *)&pkts[2]->rearm_data);
 549         vec_vsx_st(rearm3, 0,
 550                 (vector unsigned char *)&pkts[3]->rearm_data);
 551 }
 552
 553
 554 /**
 555  * Receive burst of packets. An errored completion also consumes a mbuf, but the
 556  * packet_type is set to be RTE_PTYPE_ALL_MASK. Marked mbufs should be freed
 557  * before returning to application.
 558  *
 559  * @param rxq
 560  *   Pointer to RX queue structure.
 561  * @param[out] pkts
 562  *   Array to store received packets.
 563  * @param pkts_n
 564  *   Maximum number of packets in array.
 565  * @param[out] err
 566  *   Pointer to a flag. Set non-zero value if pkts array has at least one error
 567  *   packet to handle.
 568  * @param[out] no_cq
 569  *  Pointer to a boolean. Set true if no new CQE seen.
 570  *
 571  * @return
 572  *   Number of packets received including errors (<= pkts_n).
 573  */
 574 static inline uint16_t
 575 rxq_burst_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t pkts_n,
 576             uint64_t *err, bool *no_cq)
 577 {
 578         const uint16_t q_n = 1 << rxq->cqe_n;
 579         const uint16_t q_mask = q_n - 1;
 580         volatile struct mlx5_cqe *cq;
 581         struct rte_mbuf **elts;
 582         unsigned int pos;
 583         uint64_t n;
 584         uint16_t repl_n;
 585         uint64_t comp_idx = MLX5_VPMD_DESCS_PER_LOOP;
 586         uint16_t nocmp_n = 0;
 587         uint16_t rcvd_pkt = 0;
 588         unsigned int cq_idx = rxq->cq_ci & q_mask;
 589         unsigned int elts_idx;
 590         unsigned int ownership = !!(rxq->cq_ci & (q_mask + 1));
 591         const vector unsigned char zero = (vector unsigned char){0};
 592         const vector unsigned char ones = vec_splat_u8(-1);
 593         const vector unsigned char owner_check =
 594                 (vector unsigned char)(vector unsigned long){
 595                 0x0100000001000000LL, 0x0100000001000000LL};
 596         const vector unsigned char opcode_check =
 597                 (vector unsigned char)(vector unsigned long){
 598                 0xf0000000f0000000LL, 0xf0000000f0000000LL};
 599         const vector unsigned char format_check =
 600                 (vector unsigned char)(vector unsigned long){
 601                 0x0c0000000c000000LL, 0x0c0000000c000000LL};
 602         const vector unsigned char resp_err_check =
 603                 (vector unsigned char)(vector unsigned long){
 604                 0xe0000000e0000000LL, 0xe0000000e0000000LL};
 605 #ifdef MLX5_PMD_SOFT_COUNTERS
 606         uint32_t rcvd_byte = 0;
 607         /* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */
 608         const vector unsigned char len_shuf_mask = (vector unsigned char){
 609                  1,  0,  5,  4,
 610                  9,  8, 13, 12,
 611                 -1, -1, -1, -1,
 612                 -1, -1, -1, -1};
 613 #endif
 614         /* Mask to shuffle from extracted CQE to mbuf. */
 615         const vector unsigned char shuf_mask = (vector unsigned char){
 616                  5,  4,           /* bswap16, pkt_len */
 617                 -1, -1,           /* zero out 2nd half of pkt_len */
 618                  5,  4,           /* bswap16, data_len */
 619                 11, 10,           /* bswap16, vlan+tci */
 620                 15, 14, 13, 12,   /* bswap32, rss */
 621                  1,  2,  3, -1};  /* fdir.hi */
 622         /* Mask to blend from the last Qword to the first DQword. */
 623         /* Mask to blend from the last Qword to the first DQword. */
 624         const vector unsigned char blend_mask = (vector unsigned char){
 625                 -1,  0,  0,  0,
 626                  0,  0,  0,  0,
 627                 -1, -1, -1, -1,
 628                 -1, -1, -1, -1};
 629         const vector unsigned char crc_adj =
 630                 (vector unsigned char)(vector unsigned short){
 631                 rxq->crc_present * RTE_ETHER_CRC_LEN, 0,
 632                 rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0, 0, 0};
 633         const vector unsigned char flow_mark_adj =
 634                 (vector unsigned char)(vector unsigned int){
 635                 0, 0, 0, rxq->mark * (-1)};
 636         const vector unsigned short cqe_sel_mask1 =
 637                 (vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0};
 638         const vector unsigned short cqe_sel_mask2 =
 639                 (vector unsigned short){0, 0, 0xffff, 0, 0, 0, 0, 0};
 640
 641         MLX5_ASSERT(rxq->sges_n == 0);
 642         MLX5_ASSERT(rxq->cqe_n == rxq->elts_n);
 643         cq = &(*rxq->cqes)[cq_idx];
 644         rte_prefetch0(cq);
 645         rte_prefetch0(cq + 1);
 646         rte_prefetch0(cq + 2);
 647         rte_prefetch0(cq + 3);
 648         pkts_n = RTE_MIN(pkts_n, MLX5_VPMD_RX_MAX_BURST);
 649
 650         repl_n = q_n - (rxq->rq_ci - rxq->rq_pi);
 651         if (repl_n >= rxq->rq_repl_thresh)
 652                 mlx5_rx_replenish_bulk_mbuf(rxq, repl_n);
 653         /* See if there're unreturned mbufs from compressed CQE. */
 654         rcvd_pkt = rxq->decompressed;
 655         if (rcvd_pkt > 0) {
 656                 rcvd_pkt = RTE_MIN(rcvd_pkt, pkts_n);
 657                 rxq_copy_mbuf_v(rxq, pkts, rcvd_pkt);
 658                 rxq->rq_pi += rcvd_pkt;
 659                 rxq->decompressed -= rcvd_pkt;
 660                 pkts += rcvd_pkt;
 661         }
 662         elts_idx = rxq->rq_pi & q_mask;
 663         elts = &(*rxq->elts)[elts_idx];
 664         /* Not to overflow pkts array. */
 665         pkts_n = RTE_ALIGN_FLOOR(pkts_n - rcvd_pkt, MLX5_VPMD_DESCS_PER_LOOP);
 666         /* Not to cross queue end. */
 667         pkts_n = RTE_MIN(pkts_n, q_n - elts_idx);
 668         pkts_n = RTE_MIN(pkts_n, q_n - cq_idx);
 669         if (!pkts_n) {
 670                 *no_cq = !rcvd_pkt;
 671                 return rcvd_pkt;
 672         }
 673         /* At this point, there shouldn't be any remaining packets. */
 674         MLX5_ASSERT(rxq->decompressed == 0);
 675
 676         /*
 677          * A. load first Qword (8bytes) in one loop.
 678          * B. copy 4 mbuf pointers from elts ring to returing pkts.
 679          * C. load remaining CQE data and extract necessary fields.
 680          *    Final 16bytes cqes[] extracted from original 64bytes CQE has the
 681          *    following structure:
 682          *        struct {
 683          *          uint8_t  pkt_info;
 684          *          uint8_t  flow_tag[3];
 685          *          uint16_t byte_cnt;
 686          *          uint8_t  rsvd4;
 687          *          uint8_t  op_own;
 688          *          uint16_t hdr_type_etc;
 689          *          uint16_t vlan_info;
 690          *          uint32_t rx_has_res;
 691          *        } c;
 692          * D. fill in mbuf.
 693          * E. get valid CQEs.
 694          * F. find compressed CQE.
 695          */
 696         for (pos = 0;
 697              pos < pkts_n;
 698              pos += MLX5_VPMD_DESCS_PER_LOOP) {
 699                 vector unsigned char cqes[MLX5_VPMD_DESCS_PER_LOOP];
 700                 vector unsigned char cqe_tmp1, cqe_tmp2;
 701                 vector unsigned char pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
 702                 vector unsigned char op_own, op_own_tmp1, op_own_tmp2;
 703                 vector unsigned char opcode, owner_mask, invalid_mask;
 704                 vector unsigned char comp_mask;
 705                 vector unsigned char mask;
 706 #ifdef MLX5_PMD_SOFT_COUNTERS
 707                 const vector unsigned char lower_half = {
 708                         0, 1, 4, 5, 8, 9, 12, 13,
 709                         16, 17, 20, 21, 24, 25, 28, 29};
 710                 const vector unsigned char upper_half = {
 711                         2, 3, 6, 7, 10, 11, 14, 15,
 712                         18, 19, 22, 23, 26, 27, 30, 31};
 713                 const vector unsigned long shmax = {64, 64};
 714                 vector unsigned char byte_cnt;
 715                 vector unsigned short left, right;
 716                 vector unsigned long lshift;
 717                 vector __attribute__((altivec(bool__)))
 718                         unsigned long shmask;
 719 #endif
 720                 vector unsigned char mbp1, mbp2;
 721                 vector unsigned char p =
 722                         (vector unsigned char)(vector unsigned short){
 723                                 0, 1, 2, 3, 0, 0, 0, 0};
 724                 unsigned int p1, p2, p3;
 725
 726                 /* Prefetch next 4 CQEs. */
 727                 if (pkts_n - pos >= 2 * MLX5_VPMD_DESCS_PER_LOOP) {
 728                         rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP]);
 729                         rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 1]);
 730                         rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 2]);
 731                         rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 3]);
 732                 }
 733
 734                 /* A.0 do not cross the end of CQ. */
 735                 mask = (vector unsigned char)(vector unsigned long){
 736                         (pkts_n - pos) * sizeof(uint16_t) * 8, 0};
 737
 738                 {
 739                         vector unsigned long lshift;
 740                         vector __attribute__((altivec(bool__)))
 741                                 unsigned long shmask;
 742                         const vector unsigned long shmax = {64, 64};
 743
 744                         lshift = vec_splat((vector unsigned long)mask, 0);
 745                         shmask = vec_cmpgt(shmax, lshift);
 746                         mask = (vector unsigned char)
 747                                 vec_sl((vector unsigned long)ones, lshift);
 748                         mask = (vector unsigned char)
 749                                 vec_sel((vector unsigned long)shmask,
 750                                 (vector unsigned long)mask, shmask);
 751                 }
 752
 753                 p = (vector unsigned char)
 754                         vec_andc((vector unsigned long)p,
 755                         (vector unsigned long)mask);
 756
 757                 /* A.1 load cqes. */
 758                 p3 = (unsigned int)((vector unsigned short)p)[3];
 759                 cqes[3] = (vector unsigned char)(vector unsigned long){
 760                         *(__rte_aligned(8) unsigned long *)
 761                         &cq[pos + p3].sop_drop_qpn, 0LL};
 762                 rte_compiler_barrier();
 763
 764                 p2 = (unsigned int)((vector unsigned short)p)[2];
 765                 cqes[2] = (vector unsigned char)(vector unsigned long){
 766                         *(__rte_aligned(8) unsigned long *)
 767                         &cq[pos + p2].sop_drop_qpn, 0LL};
 768                 rte_compiler_barrier();
 769
 770                 /* B.1 load mbuf pointers. */
 771                 mbp1 = (vector unsigned char)vec_vsx_ld(0,
 772                         (signed int const *)&elts[pos]);
 773                 mbp2 = (vector unsigned char)vec_vsx_ld(0,
 774                         (signed int const *)&elts[pos + 2]);
 775
 776                 /* A.1 load a block having op_own. */
 777                 p1 = (unsigned int)((vector unsigned short)p)[1];
 778                 cqes[1] = (vector unsigned char)(vector unsigned long){
 779                         *(__rte_aligned(8) unsigned long *)
 780                         &cq[pos + p1].sop_drop_qpn, 0LL};
 781                 rte_compiler_barrier();
 782
 783                 cqes[0] = (vector unsigned char)(vector unsigned long){
 784                         *(__rte_aligned(8) unsigned long *)
 785                         &cq[pos].sop_drop_qpn, 0LL};
 786                 rte_compiler_barrier();
 787
 788                 /* B.2 copy mbuf pointers. */
 789                 *(vector unsigned char *)&pkts[pos] = mbp1;
 790                 *(vector unsigned char *)&pkts[pos + 2] = mbp2;
 791                 rte_cio_rmb();
 792
 793                 /* C.1 load remaining CQE data and extract necessary fields. */
 794                 cqe_tmp2 = *(vector unsigned char *)
 795                         &cq[pos + p3].pkt_info;
 796                 cqe_tmp1 = *(vector unsigned char *)
 797                         &cq[pos + p2].pkt_info;
 798                 cqes[3] = vec_sel(cqes[3], cqe_tmp2, blend_mask);
 799                 cqes[2] = vec_sel(cqes[2], cqe_tmp1, blend_mask);
 800                 cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0,
 801                         (signed int const *)&cq[pos + p3].csum);
 802                 cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0,
 803                         (signed int const *)&cq[pos + p2].csum);
 804                 cqes[3] = (vector unsigned char)
 805                         vec_sel((vector unsigned short)cqes[3],
 806                         (vector unsigned short)cqe_tmp2, cqe_sel_mask1);
 807                 cqes[2] = (vector unsigned char)
 808                         vec_sel((vector unsigned short)cqes[2],
 809                         (vector unsigned short)cqe_tmp1, cqe_sel_mask1);
 810                 cqe_tmp2 = (vector unsigned char)(vector unsigned long){
 811                         *(__rte_aligned(8) unsigned long *)
 812                         &cq[pos + p3].rsvd3[9], 0LL};
 813                 cqe_tmp1 = (vector unsigned char)(vector unsigned long){
 814                         *(__rte_aligned(8) unsigned long *)
 815                         &cq[pos + p2].rsvd3[9], 0LL};
 816                 cqes[3] = (vector unsigned char)
 817                         vec_sel((vector unsigned short)cqes[3],
 818                         (vector unsigned short)cqe_tmp2,
 819                         (vector unsigned short)cqe_sel_mask2);
 820                 cqes[2] = (vector unsigned char)
 821                         vec_sel((vector unsigned short)cqes[2],
 822                         (vector unsigned short)cqe_tmp1,
 823                         (vector unsigned short)cqe_sel_mask2);
 824
 825                 /* C.2 generate final structure for mbuf with swapping bytes. */
 826                 pkt_mb3 = vec_perm(cqes[3], zero, shuf_mask);
 827                 pkt_mb2 = vec_perm(cqes[2], zero, shuf_mask);
 828
 829                 /* C.3 adjust CRC length. */
 830                 pkt_mb3 = (vector unsigned char)
 831                         ((vector unsigned short)pkt_mb3 -
 832                         (vector unsigned short)crc_adj);
 833                 pkt_mb2 = (vector unsigned char)
 834                         ((vector unsigned short)pkt_mb2 -
 835                         (vector unsigned short)crc_adj);
 836
 837                 /* C.4 adjust flow mark. */
 838                 pkt_mb3 = (vector unsigned char)
 839                         ((vector unsigned int)pkt_mb3 +
 840                         (vector unsigned int)flow_mark_adj);
 841                 pkt_mb2 = (vector unsigned char)
 842                         ((vector unsigned int)pkt_mb2 +
 843                         (vector unsigned int)flow_mark_adj);
 844
 845                 /* D.1 fill in mbuf - rx_descriptor_fields1. */
 846                 *(vector unsigned char *)
 847                         &pkts[pos + 3]->pkt_len = pkt_mb3;
 848                 *(vector unsigned char *)
 849                         &pkts[pos + 2]->pkt_len = pkt_mb2;
 850
 851                 /* E.1 extract op_own field. */
 852                 op_own_tmp2 = (vector unsigned char)
 853                         vec_mergeh((vector unsigned int)cqes[2],
 854                         (vector unsigned int)cqes[3]);
 855
 856                 /* C.1 load remaining CQE data and extract necessary fields. */
 857                 cqe_tmp2 = *(vector unsigned char *)
 858                         &cq[pos + p1].pkt_info;
 859                 cqe_tmp1 = *(vector unsigned char *)
 860                         &cq[pos].pkt_info;
 861                 cqes[1] = vec_sel(cqes[1], cqe_tmp2, blend_mask);
 862                 cqes[0] = vec_sel(cqes[0], cqe_tmp2, blend_mask);
 863                 cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0,
 864                         (signed int const *)&cq[pos + p1].csum);
 865                 cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0,
 866                         (signed int const *)&cq[pos].csum);
 867                 cqes[1] = (vector unsigned char)
 868                         vec_sel((vector unsigned short)cqes[1],
 869                         (vector unsigned short)cqe_tmp2, cqe_sel_mask1);
 870                 cqes[0] = (vector unsigned char)
 871                         vec_sel((vector unsigned short)cqes[0],
 872                         (vector unsigned short)cqe_tmp1, cqe_sel_mask1);
 873                 cqe_tmp2 = (vector unsigned char)(vector unsigned long){
 874                         *(__rte_aligned(8) unsigned long *)
 875                         &cq[pos + p1].rsvd3[9], 0LL};
 876                 cqe_tmp1 = (vector unsigned char)(vector unsigned long){
 877                         *(__rte_aligned(8) unsigned long *)
 878                         &cq[pos].rsvd3[9], 0LL};
 879                 cqes[1] = (vector unsigned char)
 880                         vec_sel((vector unsigned short)cqes[1],
 881                         (vector unsigned short)cqe_tmp2, cqe_sel_mask2);
 882                 cqes[0] = (vector unsigned char)
 883                         vec_sel((vector unsigned short)cqes[0],
 884                         (vector unsigned short)cqe_tmp1, cqe_sel_mask2);
 885
 886                 /* C.2 generate final structure for mbuf with swapping bytes. */
 887                 pkt_mb1 = vec_perm(cqes[1], zero, shuf_mask);
 888                 pkt_mb0 = vec_perm(cqes[0], zero, shuf_mask);
 889
 890                 /* C.3 adjust CRC length. */
 891                 pkt_mb1 = (vector unsigned char)
 892                         ((vector unsigned short)pkt_mb1 -
 893                         (vector unsigned short)crc_adj);
 894                 pkt_mb0 = (vector unsigned char)
 895                         ((vector unsigned short)pkt_mb0 -
 896                         (vector unsigned short)crc_adj);
 897
 898                 /* C.4 adjust flow mark. */
 899                 pkt_mb1 = (vector unsigned char)
 900                         ((vector unsigned int)pkt_mb1 +
 901                         (vector unsigned int)flow_mark_adj);
 902                 pkt_mb0 = (vector unsigned char)
 903                         ((vector unsigned int)pkt_mb0 +
 904                         (vector unsigned int)flow_mark_adj);
 905
 906                 /* E.1 extract op_own byte. */
 907                 op_own_tmp1 = (vector unsigned char)
 908                         vec_mergeh((vector unsigned int)cqes[0],
 909                         (vector unsigned int)cqes[1]);
 910                 op_own = (vector unsigned char)
 911                         vec_mergel((vector unsigned long)op_own_tmp1,
 912                         (vector unsigned long)op_own_tmp2);
 913
 914                 /* D.1 fill in mbuf - rx_descriptor_fields1. */
 915                 *(vector unsigned char *)
 916                         &pkts[pos + 1]->pkt_len = pkt_mb1;
 917                 *(vector unsigned char *)
 918                         &pkts[pos]->pkt_len = pkt_mb0;
 919
 920                 /* E.2 flip owner bit to mark CQEs from last round. */
 921                 owner_mask = (vector unsigned char)
 922                         vec_and((vector unsigned long)op_own,
 923                         (vector unsigned long)owner_check);
 924                 if (ownership)
 925                         owner_mask = (vector unsigned char)
 926                                 vec_xor((vector unsigned long)owner_mask,
 927                                 (vector unsigned long)owner_check);
 928                 owner_mask = (vector unsigned char)
 929                         vec_cmpeq((vector unsigned int)owner_mask,
 930                         (vector unsigned int)owner_check);
 931                 owner_mask = (vector unsigned char)
 932                         vec_packs((vector unsigned int)owner_mask,
 933                         (vector unsigned int)zero);
 934
 935                 /* E.3 get mask for invalidated CQEs. */
 936                 opcode = (vector unsigned char)
 937                         vec_and((vector unsigned long)op_own,
 938                         (vector unsigned long)opcode_check);
 939                 invalid_mask = (vector unsigned char)
 940                         vec_cmpeq((vector unsigned int)opcode_check,
 941                         (vector unsigned int)opcode);
 942                 invalid_mask = (vector unsigned char)
 943                         vec_packs((vector unsigned int)invalid_mask,
 944                         (vector unsigned int)zero);
 945
 946                 /* E.4 mask out beyond boundary. */
 947                 invalid_mask = (vector unsigned char)
 948                         vec_or((vector unsigned long)invalid_mask,
 949                         (vector unsigned long)mask);
 950
 951                 /* E.5 merge invalid_mask with invalid owner. */
 952                 invalid_mask = (vector unsigned char)
 953                         vec_or((vector unsigned long)invalid_mask,
 954                         (vector unsigned long)owner_mask);
 955
 956                 /* F.1 find compressed CQE format. */
 957                 comp_mask = (vector unsigned char)
 958                         vec_and((vector unsigned long)op_own,
 959                         (vector unsigned long)format_check);
 960                 comp_mask = (vector unsigned char)
 961                         vec_cmpeq((vector unsigned int)comp_mask,
 962                         (vector unsigned int)format_check);
 963                 comp_mask = (vector unsigned char)
 964                         vec_packs((vector unsigned int)comp_mask,
 965                         (vector unsigned int)zero);
 966
 967                 /* F.2 mask out invalid entries. */
 968                 comp_mask = (vector unsigned char)
 969                         vec_andc((vector unsigned long)comp_mask,
 970                         (vector unsigned long)invalid_mask);
 971                 comp_idx = ((vector unsigned long)comp_mask)[0];
 972
 973                 /* F.3 get the first compressed CQE. */
 974                 comp_idx = comp_idx ? __builtin_ctzll(comp_idx) /
 975                         (sizeof(uint16_t) * 8) : MLX5_VPMD_DESCS_PER_LOOP;
 976
 977                 /* E.6 mask out entries after the compressed CQE. */
 978                 mask = (vector unsigned char)(vector unsigned long){
 979                         (comp_idx * sizeof(uint16_t) * 8), 0};
 980                 lshift = vec_splat((vector unsigned long)mask, 0);
 981                 shmask = vec_cmpgt(shmax, lshift);
 982                 mask = (vector unsigned char)
 983                         vec_sl((vector unsigned long)ones, lshift);
 984                 mask = (vector unsigned char)
 985                         vec_sel((vector unsigned long)shmask,
 986                         (vector unsigned long)mask, shmask);
 987                 invalid_mask = (vector unsigned char)
 988                         vec_or((vector unsigned long)invalid_mask,
 989                         (vector unsigned long)mask);
 990
 991                 /* E.7 count non-compressed valid CQEs. */
 992                 n = ((vector unsigned long)invalid_mask)[0];
 993                 n = n ? __builtin_ctzll(n) / (sizeof(uint16_t) * 8) :
 994                         MLX5_VPMD_DESCS_PER_LOOP;
 995                 nocmp_n += n;
 996
 997                 /* D.2 get the final invalid mask. */
 998                 mask = (vector unsigned char)(vector unsigned long){
 999                         (n * sizeof(uint16_t) * 8), 0};
1000                 lshift = vec_splat((vector unsigned long)mask, 0);
1001                 shmask = vec_cmpgt(shmax, lshift);
1002                 mask = (vector unsigned char)
1003                         vec_sl((vector unsigned long)ones, lshift);
1004                 mask = (vector unsigned char)
1005                         vec_sel((vector unsigned long)shmask,
1006                         (vector unsigned long)mask, shmask);
1007                 invalid_mask = (vector unsigned char)
1008                         vec_or((vector unsigned long)invalid_mask,
1009                         (vector unsigned long)mask);
1010
1011                 /* D.3 check error in opcode. */
1012                 opcode = (vector unsigned char)
1013                         vec_cmpeq((vector unsigned int)resp_err_check,
1014                         (vector unsigned int)opcode);
1015                 opcode = (vector unsigned char)
1016                         vec_packs((vector unsigned int)opcode,
1017                         (vector unsigned int)zero);
1018                 opcode = (vector unsigned char)
1019                         vec_andc((vector unsigned long)opcode,
1020                         (vector unsigned long)invalid_mask);
1021
1022                 /* D.4 mark if any error is set */
1023                 *err |= ((vector unsigned long)opcode)[0];
1024
1025                 /* D.5 fill in mbuf - rearm_data and packet_type. */
1026                 rxq_cq_to_ptype_oflags_v(rxq, cqes, opcode, &pkts[pos]);
1027                 if (rxq->hw_timestamp) {
1028                         if (rxq->rt_timestamp) {
1029                                 struct mlx5_dev_ctx_shared *sh = rxq->sh;
1030                                 uint64_t ts;
1031
1032                                 ts = rte_be_to_cpu_64(cq[pos].timestamp);
1033                                 pkts[pos]->timestamp =
1034                                         mlx5_txpp_convert_rx_ts(sh, ts);
1035                                 ts = rte_be_to_cpu_64(cq[pos + p1].timestamp);
1036                                 pkts[pos + 1]->timestamp =
1037                                         mlx5_txpp_convert_rx_ts(sh, ts);
1038                                 ts = rte_be_to_cpu_64(cq[pos + p2].timestamp);
1039                                 pkts[pos + 2]->timestamp =
1040                                         mlx5_txpp_convert_rx_ts(sh, ts);
1041                                 ts = rte_be_to_cpu_64(cq[pos + p3].timestamp);
1042                                 pkts[pos + 3]->timestamp =
1043                                         mlx5_txpp_convert_rx_ts(sh, ts);
1044                         } else {
1045                                 pkts[pos]->timestamp = rte_be_to_cpu_64
1046                                                 (cq[pos].timestamp);
1047                                 pkts[pos + 1]->timestamp = rte_be_to_cpu_64
1048                                                 (cq[pos + p1].timestamp);
1049                                 pkts[pos + 2]->timestamp = rte_be_to_cpu_64
1050                                                 (cq[pos + p2].timestamp);
1051                                 pkts[pos + 3]->timestamp = rte_be_to_cpu_64
1052                                                 (cq[pos + p3].timestamp);
1053                         }
1054                 }
1055                 if (rxq->dynf_meta) {
1056                         uint64_t flag = rxq->flow_meta_mask;
1057                         int32_t offs = rxq->flow_meta_offset;
1058                         uint32_t metadata;
1059
1060                         /* This code is subject for futher optimization. */
1061                         metadata = cq[pos].flow_table_metadata;
1062                         *RTE_MBUF_DYNFIELD(pkts[pos], offs, uint32_t *) =
1063                                                                 metadata;
1064                         pkts[pos]->ol_flags |= metadata ? flag : 0ULL;
1065                         metadata = cq[pos + 1].flow_table_metadata;
1066                         *RTE_MBUF_DYNFIELD(pkts[pos + 1], offs, uint32_t *) =
1067                                                                 metadata;
1068                         pkts[pos + 1]->ol_flags |= metadata ? flag : 0ULL;
1069                         metadata = cq[pos + 2].flow_table_metadata;
1070                         *RTE_MBUF_DYNFIELD(pkts[pos + 2], offs, uint32_t *) =
1071                                                                 metadata;
1072                         pkts[pos + 2]->ol_flags |= metadata ? flag : 0ULL;
1073                         metadata = cq[pos + 3].flow_table_metadata;
1074                         *RTE_MBUF_DYNFIELD(pkts[pos + 3], offs, uint32_t *) =
1075                                                                 metadata;
1076                         pkts[pos + 3]->ol_flags |= metadata ? flag : 0ULL;
1077                 }
1078 #ifdef MLX5_PMD_SOFT_COUNTERS
1079                 /* Add up received bytes count. */
1080                 byte_cnt = vec_perm(op_own, zero, len_shuf_mask);
1081                 byte_cnt = (vector unsigned char)
1082                         vec_andc((vector unsigned long)byte_cnt,
1083                         (vector unsigned long)invalid_mask);
1084                 left = vec_perm((vector unsigned short)byte_cnt,
1085                         (vector unsigned short)zero, lower_half);
1086                 right = vec_perm((vector unsigned short)byte_cnt,
1087                         (vector unsigned short)zero, upper_half);
1088                 byte_cnt = (vector unsigned char)vec_add(left, right);
1089                 left = vec_perm((vector unsigned short)byte_cnt,
1090                         (vector unsigned short)zero, lower_half);
1091                 right = vec_perm((vector unsigned short)byte_cnt,
1092                         (vector unsigned short)zero, upper_half);
1093                 byte_cnt = (vector unsigned char)vec_add(left, right);
1094                 rcvd_byte += ((vector unsigned long)byte_cnt)[0];
1095 #endif
1096
1097                 /*
1098                  * Break the loop unless more valid CQE is expected, or if
1099                  * there's a compressed CQE.
1100                  */
1101                 if (n != MLX5_VPMD_DESCS_PER_LOOP)
1102                         break;
1103         }
1104         /* If no new CQE seen, return without updating cq_db. */
1105         if (unlikely(!nocmp_n && comp_idx == MLX5_VPMD_DESCS_PER_LOOP)) {
1106                 *no_cq = true;
1107                 return rcvd_pkt;
1108         }
1109         /* Update the consumer indexes for non-compressed CQEs. */
1110         MLX5_ASSERT(nocmp_n <= pkts_n);
1111         rxq->cq_ci += nocmp_n;
1112         rxq->rq_pi += nocmp_n;
1113         rcvd_pkt += nocmp_n;
1114 #ifdef MLX5_PMD_SOFT_COUNTERS
1115         rxq->stats.ipackets += nocmp_n;
1116         rxq->stats.ibytes += rcvd_byte;
1117 #endif
1118         /* Decompress the last CQE if compressed. */
1119         if (comp_idx < MLX5_VPMD_DESCS_PER_LOOP && comp_idx == n) {
1120                 MLX5_ASSERT(comp_idx == (nocmp_n % MLX5_VPMD_DESCS_PER_LOOP));
1121                 rxq->decompressed =
1122                         rxq_cq_decompress_v(rxq, &cq[nocmp_n], &elts[nocmp_n]);
1123                 /* Return more packets if needed. */
1124                 if (nocmp_n < pkts_n) {
1125                         uint16_t n = rxq->decompressed;
1126
1127                         n = RTE_MIN(n, pkts_n - nocmp_n);
1128                         rxq_copy_mbuf_v(rxq, &pkts[nocmp_n], n);
1129                         rxq->rq_pi += n;
1130                         rcvd_pkt += n;
1131                         rxq->decompressed -= n;
1132                 }
1133         }
1134         rte_compiler_barrier();
1135         *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
1136         *no_cq = !rcvd_pkt;
1137         return rcvd_pkt;
1138 }
1139
1140 #endif /* RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_ */