drivers/net/i40e/i40e_rxtx_vec_altivec.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010 - 2015 Intel Corporation
   3  * Copyright(c) 2017 IBM Corporation.
   4  */
   5
   6 #include <stdint.h>
   7 #include <ethdev_driver.h>
   8 #include <rte_malloc.h>
   9
  10 #include "base/i40e_prototype.h"
  11 #include "base/i40e_type.h"
  12 #include "i40e_ethdev.h"
  13 #include "i40e_rxtx.h"
  14 #include "i40e_rxtx_vec_common.h"
  15
  16 #include <rte_altivec.h>
  17
  18 #pragma GCC diagnostic ignored "-Wcast-qual"
  19
  20 static inline void
  21 i40e_rxq_rearm(struct i40e_rx_queue *rxq)
  22 {
  23         int i;
  24         uint16_t rx_id;
  25         volatile union i40e_rx_desc *rxdp;
  26
  27         struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
  28         struct rte_mbuf *mb0, *mb1;
  29
  30         vector unsigned long hdr_room = (vector unsigned long){
  31                                                 RTE_PKTMBUF_HEADROOM,
  32                                                 RTE_PKTMBUF_HEADROOM};
  33         vector unsigned long dma_addr0, dma_addr1;
  34
  35         rxdp = rxq->rx_ring + rxq->rxrearm_start;
  36
  37         /* Pull 'n' more MBUFs into the software ring */
  38         if (rte_mempool_get_bulk(rxq->mp,
  39                                  (void *)rxep,
  40                                  RTE_I40E_RXQ_REARM_THRESH) < 0) {
  41                 if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >=
  42                     rxq->nb_rx_desc) {
  43                         dma_addr0 = (vector unsigned long){};
  44                         for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) {
  45                                 rxep[i].mbuf = &rxq->fake_mbuf;
  46                                 vec_st(dma_addr0, 0,
  47                                        (vector unsigned long *)&rxdp[i].read);
  48                         }
  49                 }
  50                 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
  51                         RTE_I40E_RXQ_REARM_THRESH;
  52                 return;
  53         }
  54
  55         /* Initialize the mbufs in vector, process 2 mbufs in one loop */
  56         for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) {
  57                 vector unsigned long vaddr0, vaddr1;
  58                 uintptr_t p0, p1;
  59
  60                 mb0 = rxep[0].mbuf;
  61                 mb1 = rxep[1].mbuf;
  62
  63                  /* Flush mbuf with pkt template.
  64                   * Data to be rearmed is 6 bytes long.
  65                   * Though, RX will overwrite ol_flags that are coming next
  66                   * anyway. So overwrite whole 8 bytes with one load:
  67                   * 6 bytes of rearm_data plus first 2 bytes of ol_flags.
  68                   */
  69                 p0 = (uintptr_t)&mb0->rearm_data;
  70                 *(uint64_t *)p0 = rxq->mbuf_initializer;
  71                 p1 = (uintptr_t)&mb1->rearm_data;
  72                 *(uint64_t *)p1 = rxq->mbuf_initializer;
  73
  74                 /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
  75                 vaddr0 = vec_ld(0, (vector unsigned long *)&mb0->buf_addr);
  76                 vaddr1 = vec_ld(0, (vector unsigned long *)&mb1->buf_addr);
  77
  78                 /* convert pa to dma_addr hdr/data */
  79                 dma_addr0 = vec_mergel(vaddr0, vaddr0);
  80                 dma_addr1 = vec_mergel(vaddr1, vaddr1);
  81
  82                 /* add headroom to pa values */
  83                 dma_addr0 = vec_add(dma_addr0, hdr_room);
  84                 dma_addr1 = vec_add(dma_addr1, hdr_room);
  85
  86                 /* flush desc with pa dma_addr */
  87                 vec_st(dma_addr0, 0, (vector unsigned long *)&rxdp++->read);
  88                 vec_st(dma_addr1, 0, (vector unsigned long *)&rxdp++->read);
  89         }
  90
  91         rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH;
  92         if (rxq->rxrearm_start >= rxq->nb_rx_desc)
  93                 rxq->rxrearm_start = 0;
  94
  95         rxq->rxrearm_nb -= RTE_I40E_RXQ_REARM_THRESH;
  96
  97         rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
  98                              (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
  99
 100         /* Update the tail pointer on the NIC */
 101         I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
 102 }
 103
 104 static inline void
 105 desc_to_olflags_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts)
 106 {
 107         vector unsigned int vlan0, vlan1, rss, l3_l4e;
 108
 109         /* mask everything except RSS, flow director and VLAN flags
 110          * bit2 is for VLAN tag, bit11 for flow director indication
 111          * bit13:12 for RSS indication.
 112          */
 113         const vector unsigned int rss_vlan_msk = (vector unsigned int){
 114                         (int32_t)0x1c03804, (int32_t)0x1c03804,
 115                         (int32_t)0x1c03804, (int32_t)0x1c03804};
 116
 117         /* map rss and vlan type to rss hash and vlan flag */
 118         const vector unsigned char vlan_flags = (vector unsigned char){
 119                         0, 0, 0, 0,
 120                         RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED, 0, 0, 0,
 121                         0, 0, 0, 0,
 122                         0, 0, 0, 0};
 123
 124         const vector unsigned char rss_flags = (vector unsigned char){
 125                         0, RTE_MBUF_F_RX_FDIR, 0, 0,
 126                         0, 0, RTE_MBUF_F_RX_RSS_HASH, RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_FDIR,
 127                         0, 0, 0, 0,
 128                         0, 0, 0, 0};
 129
 130         const vector unsigned char l3_l4e_flags = (vector unsigned char){
 131                         0,
 132                         RTE_MBUF_F_RX_IP_CKSUM_BAD,
 133                         RTE_MBUF_F_RX_L4_CKSUM_BAD,
 134                         RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD,
 135                         RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
 136                         RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD,
 137                         RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD,
 138                         RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD
 139                                              | RTE_MBUF_F_RX_IP_CKSUM_BAD,
 140                         0, 0, 0, 0, 0, 0, 0, 0};
 141
 142         vlan0 = (vector unsigned int)vec_mergel(descs[0], descs[1]);
 143         vlan1 = (vector unsigned int)vec_mergel(descs[2], descs[3]);
 144         vlan0 = (vector unsigned int)vec_mergeh(vlan0, vlan1);
 145
 146         vlan1 = vec_and(vlan0, rss_vlan_msk);
 147         vlan0 = (vector unsigned int)vec_perm(vlan_flags,
 148                                         (vector unsigned char){},
 149                                         *(vector unsigned char *)&vlan1);
 150
 151         rss = vec_sr(vlan1, (vector unsigned int){11, 11, 11, 11});
 152         rss = (vector unsigned int)vec_perm(rss_flags, (vector unsigned char){},
 153                                         *(vector unsigned char *)&rss);
 154
 155         l3_l4e = vec_sr(vlan1, (vector unsigned int){22, 22, 22, 22});
 156         l3_l4e = (vector unsigned int)vec_perm(l3_l4e_flags,
 157                                         (vector unsigned char){},
 158                                         *(vector unsigned char *)&l3_l4e);
 159
 160         vlan0 = vec_or(vlan0, rss);
 161         vlan0 = vec_or(vlan0, l3_l4e);
 162
 163         rx_pkts[0]->ol_flags = (uint64_t)vlan0[2];
 164         rx_pkts[1]->ol_flags = (uint64_t)vlan0[3];
 165         rx_pkts[2]->ol_flags = (uint64_t)vlan0[0];
 166         rx_pkts[3]->ol_flags = (uint64_t)vlan0[1];
 167 }
 168
 169 #define PKTLEN_SHIFT     10
 170
 171 static inline void
 172 desc_to_ptype_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts,
 173                 uint32_t *ptype_tbl)
 174 {
 175         vector unsigned long ptype0 = vec_mergel(descs[0], descs[1]);
 176         vector unsigned long ptype1 = vec_mergel(descs[2], descs[3]);
 177
 178         ptype0 = vec_sr(ptype0, (vector unsigned long){30, 30});
 179         ptype1 = vec_sr(ptype1, (vector unsigned long){30, 30});
 180
 181         rx_pkts[0]->packet_type =
 182                 ptype_tbl[(*(vector unsigned char *)&ptype0)[0]];
 183         rx_pkts[1]->packet_type =
 184                 ptype_tbl[(*(vector unsigned char *)&ptype0)[8]];
 185         rx_pkts[2]->packet_type =
 186                 ptype_tbl[(*(vector unsigned char *)&ptype1)[0]];
 187         rx_pkts[3]->packet_type =
 188                 ptype_tbl[(*(vector unsigned char *)&ptype1)[8]];
 189 }
 190
 191 /**
 192  * vPMD raw receive routine, only accept(nb_pkts >= RTE_I40E_DESCS_PER_LOOP)
 193  *
 194  * Notice:
 195  * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
 196  * - floor align nb_pkts to a RTE_I40E_DESCS_PER_LOOP power-of-two
 197  */
 198 static inline uint16_t
 199 _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 200                    uint16_t nb_pkts, uint8_t *split_packet)
 201 {
 202         volatile union i40e_rx_desc *rxdp;
 203         struct i40e_rx_entry *sw_ring;
 204         uint16_t nb_pkts_recd;
 205         int pos;
 206         uint64_t var;
 207         vector unsigned char shuf_msk;
 208         uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl;
 209
 210         vector unsigned short crc_adjust = (vector unsigned short){
 211                 0, 0,         /* ignore pkt_type field */
 212                 rxq->crc_len, /* sub crc on pkt_len */
 213                 0,            /* ignore high-16bits of pkt_len */
 214                 rxq->crc_len, /* sub crc on data_len */
 215                 0, 0, 0       /* ignore non-length fields */
 216                 };
 217         vector unsigned long dd_check, eop_check;
 218
 219         /* nb_pkts has to be floor-aligned to RTE_I40E_DESCS_PER_LOOP */
 220         nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_DESCS_PER_LOOP);
 221
 222         /* Just the act of getting into the function from the application is
 223          * going to cost about 7 cycles
 224          */
 225         rxdp = rxq->rx_ring + rxq->rx_tail;
 226
 227         rte_prefetch0(rxdp);
 228
 229         /* See if we need to rearm the RX queue - gives the prefetch a bit
 230          * of time to act
 231          */
 232         if (rxq->rxrearm_nb > RTE_I40E_RXQ_REARM_THRESH)
 233                 i40e_rxq_rearm(rxq);
 234
 235         /* Before we start moving massive data around, check to see if
 236          * there is actually a packet available
 237          */
 238         if (!(rxdp->wb.qword1.status_error_len &
 239                         rte_cpu_to_le_32(1 << I40E_RX_DESC_STATUS_DD_SHIFT)))
 240                 return 0;
 241
 242         /* 4 packets DD mask */
 243         dd_check = (vector unsigned long){0x0000000100000001ULL,
 244                                           0x0000000100000001ULL};
 245
 246         /* 4 packets EOP mask */
 247         eop_check = (vector unsigned long){0x0000000200000002ULL,
 248                                            0x0000000200000002ULL};
 249
 250         /* mask to shuffle from desc. to mbuf */
 251         shuf_msk = (vector unsigned char){
 252                 0xFF, 0xFF,   /* pkt_type set as unknown */
 253                 0xFF, 0xFF,   /* pkt_type set as unknown */
 254                 14, 15,       /* octet 15~14, low 16 bits pkt_len */
 255                 0xFF, 0xFF,   /* skip high 16 bits pkt_len, zero out */
 256                 14, 15,       /* octet 15~14, 16 bits data_len */
 257                 2, 3,         /* octet 2~3, low 16 bits vlan_macip */
 258                 4, 5, 6, 7    /* octet 4~7, 32bits rss */
 259                 };
 260
 261         /* Cache is empty -> need to scan the buffer rings, but first move
 262          * the next 'n' mbufs into the cache
 263          */
 264         sw_ring = &rxq->sw_ring[rxq->rx_tail];
 265
 266         /* A. load 4 packet in one loop
 267          * [A*. mask out 4 unused dirty field in desc]
 268          * B. copy 4 mbuf point from swring to rx_pkts
 269          * C. calc the number of DD bits among the 4 packets
 270          * [C*. extract the end-of-packet bit, if requested]
 271          * D. fill info. from desc to mbuf
 272          */
 273
 274         for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
 275                         pos += RTE_I40E_DESCS_PER_LOOP,
 276                         rxdp += RTE_I40E_DESCS_PER_LOOP) {
 277                 vector unsigned long descs[RTE_I40E_DESCS_PER_LOOP];
 278                 vector unsigned char pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
 279                 vector unsigned short staterr, sterr_tmp1, sterr_tmp2;
 280                 vector unsigned long mbp1, mbp2; /* two mbuf pointer
 281                                                   * in one XMM reg.
 282                                                   */
 283
 284                 /* B.1 load 1 mbuf point */
 285                 mbp1 = *(vector unsigned long *)&sw_ring[pos];
 286                 /* Read desc statuses backwards to avoid race condition */
 287                 /* A.1 load 4 pkts desc */
 288                 descs[3] = *(vector unsigned long *)(rxdp + 3);
 289                 rte_compiler_barrier();
 290
 291                 /* B.2 copy 2 mbuf point into rx_pkts  */
 292                 *(vector unsigned long *)&rx_pkts[pos] = mbp1;
 293
 294                 /* B.1 load 1 mbuf point */
 295                 mbp2 = *(vector unsigned long *)&sw_ring[pos + 2];
 296
 297                 descs[2] = *(vector unsigned long *)(rxdp + 2);
 298                 rte_compiler_barrier();
 299                 /* B.1 load 2 mbuf point */
 300                 descs[1] = *(vector unsigned long *)(rxdp + 1);
 301                 rte_compiler_barrier();
 302                 descs[0] = *(vector unsigned long *)(rxdp);
 303
 304                 /* B.2 copy 2 mbuf point into rx_pkts  */
 305                 *(vector unsigned long *)&rx_pkts[pos + 2] =  mbp2;
 306
 307                 if (split_packet) {
 308                         rte_mbuf_prefetch_part2(rx_pkts[pos]);
 309                         rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
 310                         rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
 311                         rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
 312                 }
 313
 314                 /* avoid compiler reorder optimization */
 315                 rte_compiler_barrier();
 316
 317                 /* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
 318                 const vector unsigned int len3 = vec_sl(
 319                         vec_ld(0, (vector unsigned int *)&descs[3]),
 320                         (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
 321
 322                 const vector unsigned int len2 = vec_sl(
 323                         vec_ld(0, (vector unsigned int *)&descs[2]),
 324                         (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
 325
 326                 /* merge the now-aligned packet length fields back in */
 327                 descs[3] = (vector unsigned long)len3;
 328                 descs[2] = (vector unsigned long)len2;
 329
 330                 /* D.1 pkt 3,4 convert format from desc to pktmbuf */
 331                 pkt_mb4 = vec_perm((vector unsigned char)descs[3],
 332                                   (vector unsigned char){}, shuf_msk);
 333                 pkt_mb3 = vec_perm((vector unsigned char)descs[2],
 334                                   (vector unsigned char){}, shuf_msk);
 335
 336                 /* C.1 4=>2 filter staterr info only */
 337                 sterr_tmp2 = vec_mergel((vector unsigned short)descs[3],
 338                                         (vector unsigned short)descs[2]);
 339                 /* C.1 4=>2 filter staterr info only */
 340                 sterr_tmp1 = vec_mergel((vector unsigned short)descs[1],
 341                                         (vector unsigned short)descs[0]);
 342                 /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
 343                 pkt_mb4 = (vector unsigned char)vec_sub(
 344                                 (vector unsigned short)pkt_mb4, crc_adjust);
 345                 pkt_mb3 = (vector unsigned char)vec_sub(
 346                                 (vector unsigned short)pkt_mb3, crc_adjust);
 347
 348                 /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
 349                 const vector unsigned int len1 = vec_sl(
 350                         vec_ld(0, (vector unsigned int *)&descs[1]),
 351                         (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
 352                 const vector unsigned int len0 = vec_sl(
 353                         vec_ld(0, (vector unsigned int *)&descs[0]),
 354                         (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
 355
 356                 /* merge the now-aligned packet length fields back in */
 357                 descs[1] = (vector unsigned long)len1;
 358                 descs[0] = (vector unsigned long)len0;
 359
 360                 /* D.1 pkt 1,2 convert format from desc to pktmbuf */
 361                 pkt_mb2 = vec_perm((vector unsigned char)descs[1],
 362                                    (vector unsigned char){}, shuf_msk);
 363                 pkt_mb1 = vec_perm((vector unsigned char)descs[0],
 364                                    (vector unsigned char){}, shuf_msk);
 365
 366                 /* C.2 get 4 pkts staterr value  */
 367                 staterr = (vector unsigned short)vec_mergeh(
 368                                 sterr_tmp1, sterr_tmp2);
 369
 370                 /* D.3 copy final 3,4 data to rx_pkts */
 371                 vec_st(pkt_mb4, 0,
 372                  (vector unsigned char *)&rx_pkts[pos + 3]
 373                         ->rx_descriptor_fields1
 374                 );
 375                 vec_st(pkt_mb3, 0,
 376                  (vector unsigned char *)&rx_pkts[pos + 2]
 377                         ->rx_descriptor_fields1
 378                 );
 379
 380                 /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
 381                 pkt_mb2 = (vector unsigned char)vec_sub(
 382                                 (vector unsigned short)pkt_mb2, crc_adjust);
 383                 pkt_mb1 = (vector unsigned char)vec_sub(
 384                                 (vector unsigned short)pkt_mb1, crc_adjust);
 385
 386                 /* C* extract and record EOP bit */
 387                 if (split_packet) {
 388                         vector unsigned char eop_shuf_mask =
 389                                 (vector unsigned char){
 390                                         0xFF, 0xFF, 0xFF, 0xFF,
 391                                         0xFF, 0xFF, 0xFF, 0xFF,
 392                                         0xFF, 0xFF, 0xFF, 0xFF,
 393                                         0x04, 0x0C, 0x00, 0x08
 394                                 };
 395
 396                         /* and with mask to extract bits, flipping 1-0 */
 397                         vector unsigned char eop_bits = vec_and(
 398                                 (vector unsigned char)vec_nor(staterr, staterr),
 399                                 (vector unsigned char)eop_check);
 400                         /* the staterr values are not in order, as the count
 401                          * count of dd bits doesn't care. However, for end of
 402                          * packet tracking, we do care, so shuffle. This also
 403                          * compresses the 32-bit values to 8-bit
 404                          */
 405                         eop_bits = vec_perm(eop_bits, (vector unsigned char){},
 406                                             eop_shuf_mask);
 407                         /* store the resulting 32-bit value */
 408                         *split_packet = (vec_ld(0,
 409                                          (vector unsigned int *)&eop_bits))[0];
 410                         split_packet += RTE_I40E_DESCS_PER_LOOP;
 411
 412                         /* zero-out next pointers */
 413                         rx_pkts[pos]->next = NULL;
 414                         rx_pkts[pos + 1]->next = NULL;
 415                         rx_pkts[pos + 2]->next = NULL;
 416                         rx_pkts[pos + 3]->next = NULL;
 417                 }
 418
 419                 /* C.3 calc available number of desc */
 420                 staterr = vec_and(staterr, (vector unsigned short)dd_check);
 421
 422                 /* D.3 copy final 1,2 data to rx_pkts */
 423                 vec_st(pkt_mb2, 0,
 424                  (vector unsigned char *)&rx_pkts[pos + 1]
 425                         ->rx_descriptor_fields1
 426                 );
 427                 vec_st(pkt_mb1, 0,
 428                  (vector unsigned char *)&rx_pkts[pos]->rx_descriptor_fields1
 429                 );
 430                 desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
 431                 desc_to_olflags_v(descs, &rx_pkts[pos]);
 432
 433                 /* C.4 calc avaialbe number of desc */
 434                 var = __builtin_popcountll((vec_ld(0,
 435                         (vector unsigned long *)&staterr)[0]));
 436                 nb_pkts_recd += var;
 437                 if (likely(var != RTE_I40E_DESCS_PER_LOOP))
 438                         break;
 439         }
 440
 441         /* Update our internal tail pointer */
 442         rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
 443         rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
 444         rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
 445
 446         return nb_pkts_recd;
 447 }
 448
 449  /* Notice:
 450   * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
 451   * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
 452   *   numbers of DD bits
 453   */
 454 uint16_t
 455 i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 456                    uint16_t nb_pkts)
 457 {
 458         return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
 459 }
 460
 461 /**
 462  * vPMD receive routine that reassembles single burst of 32 scattered packets
 463  *
 464  * Notice:
 465  * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
 466  */
 467 static uint16_t
 468 i40e_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 469                               uint16_t nb_pkts)
 470 {
 471         struct i40e_rx_queue *rxq = rx_queue;
 472         uint8_t split_flags[RTE_I40E_VPMD_RX_BURST] = {0};
 473
 474         /* get some new buffers */
 475         uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
 476                         split_flags);
 477         if (nb_bufs == 0)
 478                 return 0;
 479
 480         /* happy day case, full burst + no packets to be joined */
 481         const uint64_t *split_fl64 = (uint64_t *)split_flags;
 482
 483         if (rxq->pkt_first_seg == NULL &&
 484             split_fl64[0] == 0 && split_fl64[1] == 0 &&
 485             split_fl64[2] == 0 && split_fl64[3] == 0)
 486                 return nb_bufs;
 487
 488         /* reassemble any packets that need reassembly*/
 489         unsigned int i = 0;
 490
 491         if (!rxq->pkt_first_seg) {
 492                 /* find the first split flag, and only reassemble then*/
 493                 while (i < nb_bufs && !split_flags[i])
 494                         i++;
 495                 if (i == nb_bufs)
 496                         return nb_bufs;
 497         }
 498         return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
 499                 &split_flags[i]);
 500 }
 501
 502 /**
 503  * vPMD receive routine that reassembles scattered packets.
 504  */
 505 uint16_t
 506 i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 507                              uint16_t nb_pkts)
 508 {
 509         uint16_t retval = 0;
 510
 511         while (nb_pkts > RTE_I40E_VPMD_RX_BURST) {
 512                 uint16_t burst;
 513
 514                 burst = i40e_recv_scattered_burst_vec(rx_queue,
 515                                                       rx_pkts + retval,
 516                                                       RTE_I40E_VPMD_RX_BURST);
 517                 retval += burst;
 518                 nb_pkts -= burst;
 519                 if (burst < RTE_I40E_VPMD_RX_BURST)
 520                         return retval;
 521         }
 522
 523         return retval + i40e_recv_scattered_burst_vec(rx_queue,
 524                                                       rx_pkts + retval,
 525                                                       nb_pkts);
 526 }
 527
 528 static inline void
 529 vtx1(volatile struct i40e_tx_desc *txdp,
 530         struct rte_mbuf *pkt, uint64_t flags)
 531 {
 532         uint64_t high_qw = (I40E_TX_DESC_DTYPE_DATA |
 533                 ((uint64_t)flags  << I40E_TXD_QW1_CMD_SHIFT) |
 534                 ((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT));
 535
 536         vector unsigned long descriptor = (vector unsigned long){
 537                 pkt->buf_iova + pkt->data_off, high_qw};
 538         *(vector unsigned long *)txdp = descriptor;
 539 }
 540
 541 static inline void
 542 vtx(volatile struct i40e_tx_desc *txdp,
 543         struct rte_mbuf **pkt, uint16_t nb_pkts,  uint64_t flags)
 544 {
 545         int i;
 546
 547         for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
 548                 vtx1(txdp, *pkt, flags);
 549 }
 550
 551 uint16_t
 552 i40e_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
 553                           uint16_t nb_pkts)
 554 {
 555         struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue;
 556         volatile struct i40e_tx_desc *txdp;
 557         struct i40e_tx_entry *txep;
 558         uint16_t n, nb_commit, tx_id;
 559         uint64_t flags = I40E_TD_CMD;
 560         uint64_t rs = I40E_TX_DESC_CMD_RS | I40E_TD_CMD;
 561         int i;
 562
 563         /* cross rx_thresh boundary is not allowed */
 564         nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh);
 565
 566         if (txq->nb_tx_free < txq->tx_free_thresh)
 567                 i40e_tx_free_bufs(txq);
 568
 569         nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
 570         nb_commit = nb_pkts;
 571         if (unlikely(nb_pkts == 0))
 572                 return 0;
 573
 574         tx_id = txq->tx_tail;
 575         txdp = &txq->tx_ring[tx_id];
 576         txep = &txq->sw_ring[tx_id];
 577
 578         txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
 579
 580         n = (uint16_t)(txq->nb_tx_desc - tx_id);
 581         if (nb_commit >= n) {
 582                 tx_backlog_entry(txep, tx_pkts, n);
 583
 584                 for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
 585                         vtx1(txdp, *tx_pkts, flags);
 586
 587                 vtx1(txdp, *tx_pkts++, rs);
 588
 589                 nb_commit = (uint16_t)(nb_commit - n);
 590
 591                 tx_id = 0;
 592                 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
 593
 594                 /* avoid reach the end of ring */
 595                 txdp = &txq->tx_ring[tx_id];
 596                 txep = &txq->sw_ring[tx_id];
 597         }
 598
 599         tx_backlog_entry(txep, tx_pkts, nb_commit);
 600
 601         vtx(txdp, tx_pkts, nb_commit, flags);
 602
 603         tx_id = (uint16_t)(tx_id + nb_commit);
 604         if (tx_id > txq->tx_next_rs) {
 605                 txq->tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
 606                         rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) <<
 607                                                 I40E_TXD_QW1_CMD_SHIFT);
 608                 txq->tx_next_rs =
 609                         (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
 610         }
 611
 612         txq->tx_tail = tx_id;
 613
 614         I40E_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
 615
 616         return nb_pkts;
 617 }
 618
 619 void __rte_cold
 620 i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq)
 621 {
 622         _i40e_rx_queue_release_mbufs_vec(rxq);
 623 }
 624
 625 int __rte_cold
 626 i40e_rxq_vec_setup(struct i40e_rx_queue *rxq)
 627 {
 628         return i40e_rxq_vec_setup_default(rxq);
 629 }
 630
 631 int __rte_cold
 632 i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused * txq)
 633 {
 634         return 0;
 635 }
 636
 637 int __rte_cold
 638 i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
 639 {
 640         return i40e_rx_vec_dev_conf_condition_check_default(dev);
 641 }