drivers/net/ice/ice_rxtx_vec_sse.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Intel Corporation
   3  */
   4
   5 #include "ice_rxtx_vec_common.h"
   6
   7 #include <tmmintrin.h>
   8
   9 #ifndef __INTEL_COMPILER
  10 #pragma GCC diagnostic ignored "-Wcast-qual"
  11 #endif
  12
  13 static inline void
  14 ice_rxq_rearm(struct ice_rx_queue *rxq)
  15 {
  16         int i;
  17         uint16_t rx_id;
  18         volatile union ice_rx_desc *rxdp;
  19         struct ice_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
  20         struct rte_mbuf *mb0, *mb1;
  21         __m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM,
  22                                           RTE_PKTMBUF_HEADROOM);
  23         __m128i dma_addr0, dma_addr1;
  24
  25         rxdp = rxq->rx_ring + rxq->rxrearm_start;
  26
  27         /* Pull 'n' more MBUFs into the software ring */
  28         if (rte_mempool_get_bulk(rxq->mp,
  29                                  (void *)rxep,
  30                                  ICE_RXQ_REARM_THRESH) < 0) {
  31                 if (rxq->rxrearm_nb + ICE_RXQ_REARM_THRESH >=
  32                     rxq->nb_rx_desc) {
  33                         dma_addr0 = _mm_setzero_si128();
  34                         for (i = 0; i < ICE_DESCS_PER_LOOP; i++) {
  35                                 rxep[i].mbuf = &rxq->fake_mbuf;
  36                                 _mm_store_si128((__m128i *)&rxdp[i].read,
  37                                                 dma_addr0);
  38                         }
  39                 }
  40                 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
  41                         ICE_RXQ_REARM_THRESH;
  42                 return;
  43         }
  44
  45         /* Initialize the mbufs in vector, process 2 mbufs in one loop */
  46         for (i = 0; i < ICE_RXQ_REARM_THRESH; i += 2, rxep += 2) {
  47                 __m128i vaddr0, vaddr1;
  48
  49                 mb0 = rxep[0].mbuf;
  50                 mb1 = rxep[1].mbuf;
  51
  52                 /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
  53                 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) !=
  54                                  offsetof(struct rte_mbuf, buf_addr) + 8);
  55                 vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr);
  56                 vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr);
  57
  58                 /* convert pa to dma_addr hdr/data */
  59                 dma_addr0 = _mm_unpackhi_epi64(vaddr0, vaddr0);
  60                 dma_addr1 = _mm_unpackhi_epi64(vaddr1, vaddr1);
  61
  62                 /* add headroom to pa values */
  63                 dma_addr0 = _mm_add_epi64(dma_addr0, hdr_room);
  64                 dma_addr1 = _mm_add_epi64(dma_addr1, hdr_room);
  65
  66                 /* flush desc with pa dma_addr */
  67                 _mm_store_si128((__m128i *)&rxdp++->read, dma_addr0);
  68                 _mm_store_si128((__m128i *)&rxdp++->read, dma_addr1);
  69         }
  70
  71         rxq->rxrearm_start += ICE_RXQ_REARM_THRESH;
  72         if (rxq->rxrearm_start >= rxq->nb_rx_desc)
  73                 rxq->rxrearm_start = 0;
  74
  75         rxq->rxrearm_nb -= ICE_RXQ_REARM_THRESH;
  76
  77         rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
  78                            (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
  79
  80         /* Update the tail pointer on the NIC */
  81         ICE_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
  82 }
  83
  84 static inline void
  85 ice_rx_desc_to_olflags_v(struct ice_rx_queue *rxq, __m128i descs[4],
  86                          struct rte_mbuf **rx_pkts)
  87 {
  88         const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
  89         __m128i rearm0, rearm1, rearm2, rearm3;
  90
  91         __m128i vlan0, vlan1, rss, l3_l4e;
  92
  93         /* mask everything except RSS, flow director and VLAN flags
  94          * bit2 is for VLAN tag, bit11 for flow director indication
  95          * bit13:12 for RSS indication.
  96          */
  97         const __m128i rss_vlan_msk = _mm_set_epi32(0x1c03804, 0x1c03804,
  98                                                    0x1c03804, 0x1c03804);
  99
 100         const __m128i cksum_mask = _mm_set_epi32(PKT_RX_IP_CKSUM_GOOD |
 101                                                  PKT_RX_IP_CKSUM_BAD |
 102                                                  PKT_RX_L4_CKSUM_GOOD |
 103                                                  PKT_RX_L4_CKSUM_BAD |
 104                                                  PKT_RX_EIP_CKSUM_BAD,
 105                                                  PKT_RX_IP_CKSUM_GOOD |
 106                                                  PKT_RX_IP_CKSUM_BAD |
 107                                                  PKT_RX_L4_CKSUM_GOOD |
 108                                                  PKT_RX_L4_CKSUM_BAD |
 109                                                  PKT_RX_EIP_CKSUM_BAD,
 110                                                  PKT_RX_IP_CKSUM_GOOD |
 111                                                  PKT_RX_IP_CKSUM_BAD |
 112                                                  PKT_RX_L4_CKSUM_GOOD |
 113                                                  PKT_RX_L4_CKSUM_BAD |
 114                                                  PKT_RX_EIP_CKSUM_BAD,
 115                                                  PKT_RX_IP_CKSUM_GOOD |
 116                                                  PKT_RX_IP_CKSUM_BAD |
 117                                                  PKT_RX_L4_CKSUM_GOOD |
 118                                                  PKT_RX_L4_CKSUM_BAD |
 119                                                  PKT_RX_EIP_CKSUM_BAD);
 120
 121         /* map rss and vlan type to rss hash and vlan flag */
 122         const __m128i vlan_flags = _mm_set_epi8(0, 0, 0, 0,
 123                         0, 0, 0, 0,
 124                         0, 0, 0, PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 125                         0, 0, 0, 0);
 126
 127         const __m128i rss_flags = _mm_set_epi8(0, 0, 0, 0,
 128                         0, 0, 0, 0,
 129                         PKT_RX_RSS_HASH | PKT_RX_FDIR, PKT_RX_RSS_HASH, 0, 0,
 130                         0, 0, PKT_RX_FDIR, 0);
 131
 132         const __m128i l3_l4e_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
 133                         /* shift right 1 bit to make sure it not exceed 255 */
 134                         (PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
 135                          PKT_RX_IP_CKSUM_BAD) >> 1,
 136                         (PKT_RX_IP_CKSUM_GOOD | PKT_RX_EIP_CKSUM_BAD |
 137                          PKT_RX_L4_CKSUM_BAD) >> 1,
 138                         (PKT_RX_EIP_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
 139                         (PKT_RX_IP_CKSUM_GOOD | PKT_RX_EIP_CKSUM_BAD) >> 1,
 140                         (PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
 141                         (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD) >> 1,
 142                         PKT_RX_IP_CKSUM_BAD >> 1,
 143                         (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD) >> 1);
 144
 145         vlan0 = _mm_unpackhi_epi32(descs[0], descs[1]);
 146         vlan1 = _mm_unpackhi_epi32(descs[2], descs[3]);
 147         vlan0 = _mm_unpacklo_epi64(vlan0, vlan1);
 148
 149         vlan1 = _mm_and_si128(vlan0, rss_vlan_msk);
 150         vlan0 = _mm_shuffle_epi8(vlan_flags, vlan1);
 151
 152         rss = _mm_srli_epi32(vlan1, 11);
 153         rss = _mm_shuffle_epi8(rss_flags, rss);
 154
 155         l3_l4e = _mm_srli_epi32(vlan1, 22);
 156         l3_l4e = _mm_shuffle_epi8(l3_l4e_flags, l3_l4e);
 157         /* then we shift left 1 bit */
 158         l3_l4e = _mm_slli_epi32(l3_l4e, 1);
 159         /* we need to mask out the reduntant bits */
 160         l3_l4e = _mm_and_si128(l3_l4e, cksum_mask);
 161
 162         vlan0 = _mm_or_si128(vlan0, rss);
 163         vlan0 = _mm_or_si128(vlan0, l3_l4e);
 164
 165         /**
 166          * At this point, we have the 4 sets of flags in the low 16-bits
 167          * of each 32-bit value in vlan0.
 168          * We want to extract these, and merge them with the mbuf init data
 169          * so we can do a single 16-byte write to the mbuf to set the flags
 170          * and all the other initialization fields. Extracting the
 171          * appropriate flags means that we have to do a shift and blend for
 172          * each mbuf before we do the write.
 173          */
 174         rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 8), 0x10);
 175         rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 4), 0x10);
 176         rearm2 = _mm_blend_epi16(mbuf_init, vlan0, 0x10);
 177         rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(vlan0, 4), 0x10);
 178
 179         /* write the rearm data and the olflags in one write */
 180         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
 181                          offsetof(struct rte_mbuf, rearm_data) + 8);
 182         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
 183                          RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));
 184         _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
 185         _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
 186         _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
 187         _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
 188 }
 189
 190 #define PKTLEN_SHIFT     10
 191
 192 static inline void
 193 ice_rx_desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
 194                        uint32_t *ptype_tbl)
 195 {
 196         __m128i ptype0 = _mm_unpackhi_epi64(descs[0], descs[1]);
 197         __m128i ptype1 = _mm_unpackhi_epi64(descs[2], descs[3]);
 198
 199         ptype0 = _mm_srli_epi64(ptype0, 30);
 200         ptype1 = _mm_srli_epi64(ptype1, 30);
 201
 202         rx_pkts[0]->packet_type = ptype_tbl[_mm_extract_epi8(ptype0, 0)];
 203         rx_pkts[1]->packet_type = ptype_tbl[_mm_extract_epi8(ptype0, 8)];
 204         rx_pkts[2]->packet_type = ptype_tbl[_mm_extract_epi8(ptype1, 0)];
 205         rx_pkts[3]->packet_type = ptype_tbl[_mm_extract_epi8(ptype1, 8)];
 206 }
 207
 208 /**
 209  * Notice:
 210  * - nb_pkts < ICE_DESCS_PER_LOOP, just return no packet
 211  * - nb_pkts > ICE_VPMD_RX_BURST, only scan ICE_VPMD_RX_BURST
 212  *   numbers of DD bits
 213  */
 214 static inline uint16_t
 215 _ice_recv_raw_pkts_vec(struct ice_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 216                        uint16_t nb_pkts, uint8_t *split_packet)
 217 {
 218         volatile union ice_rx_desc *rxdp;
 219         struct ice_rx_entry *sw_ring;
 220         uint16_t nb_pkts_recd;
 221         int pos;
 222         uint64_t var;
 223         __m128i shuf_msk;
 224         uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl;
 225
 226         __m128i crc_adjust = _mm_set_epi16
 227                                 (0, 0, 0,    /* ignore non-length fields */
 228                                  -rxq->crc_len, /* sub crc on data_len */
 229                                  0,          /* ignore high-16bits of pkt_len */
 230                                  -rxq->crc_len, /* sub crc on pkt_len */
 231                                  0, 0            /* ignore pkt_type field */
 232                                 );
 233         /**
 234          * compile-time check the above crc_adjust layout is correct.
 235          * NOTE: the first field (lowest address) is given last in set_epi16
 236          * call above.
 237          */
 238         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
 239                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
 240         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
 241                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
 242         __m128i dd_check, eop_check;
 243
 244         /* nb_pkts shall be less equal than ICE_MAX_RX_BURST */
 245         nb_pkts = RTE_MIN(nb_pkts, ICE_MAX_RX_BURST);
 246
 247         /* nb_pkts has to be floor-aligned to ICE_DESCS_PER_LOOP */
 248         nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, ICE_DESCS_PER_LOOP);
 249
 250         /* Just the act of getting into the function from the application is
 251          * going to cost about 7 cycles
 252          */
 253         rxdp = rxq->rx_ring + rxq->rx_tail;
 254
 255         rte_prefetch0(rxdp);
 256
 257         /* See if we need to rearm the RX queue - gives the prefetch a bit
 258          * of time to act
 259          */
 260         if (rxq->rxrearm_nb > ICE_RXQ_REARM_THRESH)
 261                 ice_rxq_rearm(rxq);
 262
 263         /* Before we start moving massive data around, check to see if
 264          * there is actually a packet available
 265          */
 266         if (!(rxdp->wb.qword1.status_error_len &
 267               rte_cpu_to_le_32(1 << ICE_RX_DESC_STATUS_DD_S)))
 268                 return 0;
 269
 270         /* 4 packets DD mask */
 271         dd_check = _mm_set_epi64x(0x0000000100000001LL, 0x0000000100000001LL);
 272
 273         /* 4 packets EOP mask */
 274         eop_check = _mm_set_epi64x(0x0000000200000002LL, 0x0000000200000002LL);
 275
 276         /* mask to shuffle from desc. to mbuf */
 277         shuf_msk = _mm_set_epi8
 278                         (7, 6, 5, 4,  /* octet 4~7, 32bits rss */
 279                          3, 2,        /* octet 2~3, low 16 bits vlan_macip */
 280                          15, 14,      /* octet 15~14, 16 bits data_len */
 281                          0xFF, 0xFF,  /* skip high 16 bits pkt_len, zero out */
 282                          15, 14,      /* octet 15~14, low 16 bits pkt_len */
 283                          0xFF, 0xFF,  /* pkt_type set as unknown */
 284                          0xFF, 0xFF  /*pkt_type set as unknown */
 285                         );
 286         /**
 287          * Compile-time verify the shuffle mask
 288          * NOTE: some field positions already verified above, but duplicated
 289          * here for completeness in case of future modifications.
 290          */
 291         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
 292                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
 293         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
 294                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
 295         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
 296                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
 297         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
 298                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
 299
 300         /* Cache is empty -> need to scan the buffer rings, but first move
 301          * the next 'n' mbufs into the cache
 302          */
 303         sw_ring = &rxq->sw_ring[rxq->rx_tail];
 304
 305         /* A. load 4 packet in one loop
 306          * [A*. mask out 4 unused dirty field in desc]
 307          * B. copy 4 mbuf point from swring to rx_pkts
 308          * C. calc the number of DD bits among the 4 packets
 309          * [C*. extract the end-of-packet bit, if requested]
 310          * D. fill info. from desc to mbuf
 311          */
 312
 313         for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
 314              pos += ICE_DESCS_PER_LOOP,
 315              rxdp += ICE_DESCS_PER_LOOP) {
 316                 __m128i descs[ICE_DESCS_PER_LOOP];
 317                 __m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
 318                 __m128i zero, staterr, sterr_tmp1, sterr_tmp2;
 319                 /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
 320                 __m128i mbp1;
 321 #if defined(RTE_ARCH_X86_64)
 322                 __m128i mbp2;
 323 #endif
 324
 325                 /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
 326                 mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
 327                 /* Read desc statuses backwards to avoid race condition */
 328                 /* A.1 load 4 pkts desc */
 329                 descs[3] = _mm_loadu_si128((__m128i *)(rxdp + 3));
 330                 rte_compiler_barrier();
 331
 332                 /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
 333                 _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
 334
 335 #if defined(RTE_ARCH_X86_64)
 336                 /* B.1 load 2 64 bit mbuf points */
 337                 mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos + 2]);
 338 #endif
 339
 340                 descs[2] = _mm_loadu_si128((__m128i *)(rxdp + 2));
 341                 rte_compiler_barrier();
 342                 /* B.1 load 2 mbuf point */
 343                 descs[1] = _mm_loadu_si128((__m128i *)(rxdp + 1));
 344                 rte_compiler_barrier();
 345                 descs[0] = _mm_loadu_si128((__m128i *)(rxdp));
 346
 347 #if defined(RTE_ARCH_X86_64)
 348                 /* B.2 copy 2 mbuf point into rx_pkts  */
 349                 _mm_storeu_si128((__m128i *)&rx_pkts[pos + 2], mbp2);
 350 #endif
 351
 352                 if (split_packet) {
 353                         rte_mbuf_prefetch_part2(rx_pkts[pos]);
 354                         rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
 355                         rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
 356                         rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
 357                 }
 358
 359                 /* avoid compiler reorder optimization */
 360                 rte_compiler_barrier();
 361
 362                 /* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
 363                 const __m128i len3 = _mm_slli_epi32(descs[3], PKTLEN_SHIFT);
 364                 const __m128i len2 = _mm_slli_epi32(descs[2], PKTLEN_SHIFT);
 365
 366                 /* merge the now-aligned packet length fields back in */
 367                 descs[3] = _mm_blend_epi16(descs[3], len3, 0x80);
 368                 descs[2] = _mm_blend_epi16(descs[2], len2, 0x80);
 369
 370                 /* D.1 pkt 3,4 convert format from desc to pktmbuf */
 371                 pkt_mb4 = _mm_shuffle_epi8(descs[3], shuf_msk);
 372                 pkt_mb3 = _mm_shuffle_epi8(descs[2], shuf_msk);
 373
 374                 /* C.1 4=>2 filter staterr info only */
 375                 sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
 376                 /* C.1 4=>2 filter staterr info only */
 377                 sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
 378
 379                 ice_rx_desc_to_olflags_v(rxq, descs, &rx_pkts[pos]);
 380
 381                 /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
 382                 pkt_mb4 = _mm_add_epi16(pkt_mb4, crc_adjust);
 383                 pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
 384
 385                 /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
 386                 const __m128i len1 = _mm_slli_epi32(descs[1], PKTLEN_SHIFT);
 387                 const __m128i len0 = _mm_slli_epi32(descs[0], PKTLEN_SHIFT);
 388
 389                 /* merge the now-aligned packet length fields back in */
 390                 descs[1] = _mm_blend_epi16(descs[1], len1, 0x80);
 391                 descs[0] = _mm_blend_epi16(descs[0], len0, 0x80);
 392
 393                 /* D.1 pkt 1,2 convert format from desc to pktmbuf */
 394                 pkt_mb2 = _mm_shuffle_epi8(descs[1], shuf_msk);
 395                 pkt_mb1 = _mm_shuffle_epi8(descs[0], shuf_msk);
 396
 397                 /* C.2 get 4 pkts staterr value  */
 398                 zero = _mm_xor_si128(dd_check, dd_check);
 399                 staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
 400
 401                 /* D.3 copy final 3,4 data to rx_pkts */
 402                 _mm_storeu_si128
 403                         ((void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
 404                          pkt_mb4);
 405                 _mm_storeu_si128
 406                         ((void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
 407                          pkt_mb3);
 408
 409                 /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
 410                 pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
 411                 pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
 412
 413                 /* C* extract and record EOP bit */
 414                 if (split_packet) {
 415                         __m128i eop_shuf_mask = _mm_set_epi8(0xFF, 0xFF,
 416                                                              0xFF, 0xFF,
 417                                                              0xFF, 0xFF,
 418                                                              0xFF, 0xFF,
 419                                                              0xFF, 0xFF,
 420                                                              0xFF, 0xFF,
 421                                                              0x04, 0x0C,
 422                                                              0x00, 0x08);
 423
 424                         /* and with mask to extract bits, flipping 1-0 */
 425                         __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
 426                         /* the staterr values are not in order, as the count
 427                          * count of dd bits doesn't care. However, for end of
 428                          * packet tracking, we do care, so shuffle. This also
 429                          * compresses the 32-bit values to 8-bit
 430                          */
 431                         eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
 432                         /* store the resulting 32-bit value */
 433                         *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
 434                         split_packet += ICE_DESCS_PER_LOOP;
 435                 }
 436
 437                 /* C.3 calc available number of desc */
 438                 staterr = _mm_and_si128(staterr, dd_check);
 439                 staterr = _mm_packs_epi32(staterr, zero);
 440
 441                 /* D.3 copy final 1,2 data to rx_pkts */
 442                 _mm_storeu_si128
 443                         ((void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
 444                          pkt_mb2);
 445                 _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
 446                                  pkt_mb1);
 447                 ice_rx_desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
 448                 /* C.4 calc avaialbe number of desc */
 449                 var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
 450                 nb_pkts_recd += var;
 451                 if (likely(var != ICE_DESCS_PER_LOOP))
 452                         break;
 453         }
 454
 455         /* Update our internal tail pointer */
 456         rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
 457         rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
 458         rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
 459
 460         return nb_pkts_recd;
 461 }
 462
 463 /**
 464  * Notice:
 465  * - nb_pkts < ICE_DESCS_PER_LOOP, just return no packet
 466  * - nb_pkts > ICE_VPMD_RX_BURST, only scan ICE_VPMD_RX_BURST
 467  *   numbers of DD bits
 468  */
 469 uint16_t
 470 ice_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 471                   uint16_t nb_pkts)
 472 {
 473         return _ice_recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
 474 }
 475
 476 /* vPMD receive routine that reassembles scattered packets
 477  * Notice:
 478  * - nb_pkts < ICE_DESCS_PER_LOOP, just return no packet
 479  * - nb_pkts > ICE_VPMD_RX_BURST, only scan ICE_VPMD_RX_BURST
 480  *   numbers of DD bits
 481  */
 482 uint16_t
 483 ice_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 484                             uint16_t nb_pkts)
 485 {
 486         struct ice_rx_queue *rxq = rx_queue;
 487         uint8_t split_flags[ICE_VPMD_RX_BURST] = {0};
 488
 489         /* get some new buffers */
 490         uint16_t nb_bufs = _ice_recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
 491                                                   split_flags);
 492         if (nb_bufs == 0)
 493                 return 0;
 494
 495         /* happy day case, full burst + no packets to be joined */
 496         const uint64_t *split_fl64 = (uint64_t *)split_flags;
 497
 498         if (!rxq->pkt_first_seg &&
 499             split_fl64[0] == 0 && split_fl64[1] == 0 &&
 500             split_fl64[2] == 0 && split_fl64[3] == 0)
 501                 return nb_bufs;
 502
 503         /* reassemble any packets that need reassembly*/
 504         unsigned int i = 0;
 505
 506         if (!rxq->pkt_first_seg) {
 507                 /* find the first split flag, and only reassemble then*/
 508                 while (i < nb_bufs && !split_flags[i])
 509                         i++;
 510                 if (i == nb_bufs)
 511                         return nb_bufs;
 512                 rxq->pkt_first_seg = rx_pkts[i];
 513         }
 514         return i + ice_rx_reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
 515                                              &split_flags[i]);
 516 }
 517
 518 static inline void
 519 ice_vtx1(volatile struct ice_tx_desc *txdp, struct rte_mbuf *pkt,
 520          uint64_t flags)
 521 {
 522         uint64_t high_qw =
 523                 (ICE_TX_DESC_DTYPE_DATA |
 524                  ((uint64_t)flags  << ICE_TXD_QW1_CMD_S) |
 525                  ((uint64_t)pkt->data_len << ICE_TXD_QW1_TX_BUF_SZ_S));
 526
 527         __m128i descriptor = _mm_set_epi64x(high_qw,
 528                                             pkt->buf_iova + pkt->data_off);
 529         _mm_store_si128((__m128i *)txdp, descriptor);
 530 }
 531
 532 static inline void
 533 ice_vtx(volatile struct ice_tx_desc *txdp, struct rte_mbuf **pkt,
 534         uint16_t nb_pkts, uint64_t flags)
 535 {
 536         int i;
 537
 538         for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
 539                 ice_vtx1(txdp, *pkt, flags);
 540 }
 541
 542 static uint16_t
 543 ice_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
 544                          uint16_t nb_pkts)
 545 {
 546         struct ice_tx_queue *txq = (struct ice_tx_queue *)tx_queue;
 547         volatile struct ice_tx_desc *txdp;
 548         struct ice_tx_entry *txep;
 549         uint16_t n, nb_commit, tx_id;
 550         uint64_t flags = ICE_TD_CMD;
 551         uint64_t rs = ICE_TX_DESC_CMD_RS | ICE_TD_CMD;
 552         int i;
 553
 554         /* cross rx_thresh boundary is not allowed */
 555         nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh);
 556
 557         if (txq->nb_tx_free < txq->tx_free_thresh)
 558                 ice_tx_free_bufs(txq);
 559
 560         nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
 561         nb_commit = nb_pkts;
 562         if (unlikely(nb_pkts == 0))
 563                 return 0;
 564
 565         tx_id = txq->tx_tail;
 566         txdp = &txq->tx_ring[tx_id];
 567         txep = &txq->sw_ring[tx_id];
 568
 569         txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
 570
 571         n = (uint16_t)(txq->nb_tx_desc - tx_id);
 572         if (nb_commit >= n) {
 573                 ice_tx_backlog_entry(txep, tx_pkts, n);
 574
 575                 for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
 576                         ice_vtx1(txdp, *tx_pkts, flags);
 577
 578                 ice_vtx1(txdp, *tx_pkts++, rs);
 579
 580                 nb_commit = (uint16_t)(nb_commit - n);
 581
 582                 tx_id = 0;
 583                 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
 584
 585                 /* avoid reach the end of ring */
 586                 txdp = &txq->tx_ring[tx_id];
 587                 txep = &txq->sw_ring[tx_id];
 588         }
 589
 590         ice_tx_backlog_entry(txep, tx_pkts, nb_commit);
 591
 592         ice_vtx(txdp, tx_pkts, nb_commit, flags);
 593
 594         tx_id = (uint16_t)(tx_id + nb_commit);
 595         if (tx_id > txq->tx_next_rs) {
 596                 txq->tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
 597                         rte_cpu_to_le_64(((uint64_t)ICE_TX_DESC_CMD_RS) <<
 598                                          ICE_TXD_QW1_CMD_S);
 599                 txq->tx_next_rs =
 600                         (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
 601         }
 602
 603         txq->tx_tail = tx_id;
 604
 605         ICE_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
 606
 607         return nb_pkts;
 608 }
 609
 610 uint16_t
 611 ice_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
 612                   uint16_t nb_pkts)
 613 {
 614         uint16_t nb_tx = 0;
 615         struct ice_tx_queue *txq = (struct ice_tx_queue *)tx_queue;
 616
 617         while (nb_pkts) {
 618                 uint16_t ret, num;
 619
 620                 num = (uint16_t)RTE_MIN(nb_pkts, txq->tx_rs_thresh);
 621                 ret = ice_xmit_fixed_burst_vec(tx_queue, &tx_pkts[nb_tx], num);
 622                 nb_tx += ret;
 623                 nb_pkts -= ret;
 624                 if (ret < num)
 625                         break;
 626         }
 627
 628         return nb_tx;
 629 }
 630
 631 int __attribute__((cold))
 632 ice_rxq_vec_setup(struct ice_rx_queue *rxq)
 633 {
 634         if (!rxq)
 635                 return -1;
 636
 637         rxq->rx_rel_mbufs = _ice_rx_queue_release_mbufs_vec;
 638         return ice_rxq_vec_setup_default(rxq);
 639 }
 640
 641 int __attribute__((cold))
 642 ice_txq_vec_setup(struct ice_tx_queue __rte_unused *txq)
 643 {
 644         if (!txq)
 645                 return -1;
 646
 647         txq->tx_rel_mbufs = _ice_tx_queue_release_mbufs_vec;
 648         return 0;
 649 }
 650
 651 int __attribute__((cold))
 652 ice_rx_vec_dev_check(struct rte_eth_dev *dev)
 653 {
 654         return ice_rx_vec_dev_check_default(dev);
 655 }
 656
 657 int __attribute__((cold))
 658 ice_tx_vec_dev_check(struct rte_eth_dev *dev)
 659 {
 660         return ice_tx_vec_dev_check_default(dev);
 661 }