drivers/net/iavf/iavf_rxtx_vec_sse.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Intel Corporation
   3  */
   4
   5 #include <stdint.h>
   6 #include <ethdev_driver.h>
   7 #include <rte_malloc.h>
   8
   9 #include "iavf.h"
  10 #include "iavf_rxtx.h"
  11 #include "iavf_rxtx_vec_common.h"
  12
  13 #include <tmmintrin.h>
  14
  15 #ifndef __INTEL_COMPILER
  16 #pragma GCC diagnostic ignored "-Wcast-qual"
  17 #endif
  18
  19 static inline void
  20 iavf_rxq_rearm(struct iavf_rx_queue *rxq)
  21 {
  22         int i;
  23         uint16_t rx_id;
  24
  25         volatile union iavf_rx_desc *rxdp;
  26         struct rte_mbuf **rxp = &rxq->sw_ring[rxq->rxrearm_start];
  27         struct rte_mbuf *mb0, *mb1;
  28         __m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM,
  29                         RTE_PKTMBUF_HEADROOM);
  30         __m128i dma_addr0, dma_addr1;
  31
  32         rxdp = rxq->rx_ring + rxq->rxrearm_start;
  33
  34         /* Pull 'n' more MBUFs into the software ring */
  35         if (rte_mempool_get_bulk(rxq->mp, (void *)rxp,
  36                                  rxq->rx_free_thresh) < 0) {
  37                 if (rxq->rxrearm_nb + rxq->rx_free_thresh >= rxq->nb_rx_desc) {
  38                         dma_addr0 = _mm_setzero_si128();
  39                         for (i = 0; i < IAVF_VPMD_DESCS_PER_LOOP; i++) {
  40                                 rxp[i] = &rxq->fake_mbuf;
  41                                 _mm_store_si128((__m128i *)&rxdp[i].read,
  42                                                 dma_addr0);
  43                         }
  44                 }
  45                 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
  46                         rxq->rx_free_thresh;
  47                 return;
  48         }
  49
  50         /* Initialize the mbufs in vector, process 2 mbufs in one loop */
  51         for (i = 0; i < rxq->rx_free_thresh; i += 2, rxp += 2) {
  52                 __m128i vaddr0, vaddr1;
  53
  54                 mb0 = rxp[0];
  55                 mb1 = rxp[1];
  56
  57                 /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
  58                 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) !=
  59                                 offsetof(struct rte_mbuf, buf_addr) + 8);
  60                 vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr);
  61                 vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr);
  62
  63                 /* convert pa to dma_addr hdr/data */
  64                 dma_addr0 = _mm_unpackhi_epi64(vaddr0, vaddr0);
  65                 dma_addr1 = _mm_unpackhi_epi64(vaddr1, vaddr1);
  66
  67                 /* add headroom to pa values */
  68                 dma_addr0 = _mm_add_epi64(dma_addr0, hdr_room);
  69                 dma_addr1 = _mm_add_epi64(dma_addr1, hdr_room);
  70
  71                 /* flush desc with pa dma_addr */
  72                 _mm_store_si128((__m128i *)&rxdp++->read, dma_addr0);
  73                 _mm_store_si128((__m128i *)&rxdp++->read, dma_addr1);
  74         }
  75
  76         rxq->rxrearm_start += rxq->rx_free_thresh;
  77         if (rxq->rxrearm_start >= rxq->nb_rx_desc)
  78                 rxq->rxrearm_start = 0;
  79
  80         rxq->rxrearm_nb -= rxq->rx_free_thresh;
  81
  82         rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
  83                            (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
  84
  85         PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
  86                    "rearm_start=%u rearm_nb=%u",
  87                    rxq->port_id, rxq->queue_id,
  88                    rx_id, rxq->rxrearm_start, rxq->rxrearm_nb);
  89
  90         /* Update the tail pointer on the NIC */
  91         IAVF_PCI_REG_WC_WRITE(rxq->qrx_tail, rx_id);
  92 }
  93
  94 static inline void
  95 desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
  96                   struct rte_mbuf **rx_pkts)
  97 {
  98         const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
  99         __m128i rearm0, rearm1, rearm2, rearm3;
 100
 101         __m128i vlan0, vlan1, rss, l3_l4e;
 102
 103         /* mask everything except RSS, flow director and VLAN flags
 104          * bit2 is for VLAN tag, bit11 for flow director indication
 105          * bit13:12 for RSS indication.
 106          */
 107         const __m128i rss_vlan_msk = _mm_set_epi32(
 108                         0x1c03804, 0x1c03804, 0x1c03804, 0x1c03804);
 109
 110         const __m128i cksum_mask = _mm_set_epi32(
 111                         RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
 112                         RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
 113                         RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
 114                         RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
 115                         RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
 116                         RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
 117                         RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
 118                         RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
 119                         RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
 120                         RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
 121                         RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
 122                         RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD);
 123
 124         /* map rss and vlan type to rss hash and vlan flag */
 125         const __m128i vlan_flags = _mm_set_epi8(0, 0, 0, 0,
 126                         0, 0, 0, 0,
 127                         0, 0, 0, RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
 128                         0, 0, 0, 0);
 129
 130         const __m128i rss_flags = _mm_set_epi8(0, 0, 0, 0,
 131                         0, 0, 0, 0,
 132                         RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_RSS_HASH, 0, 0,
 133                         0, 0, RTE_MBUF_F_RX_FDIR, 0);
 134
 135         const __m128i l3_l4e_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
 136                         /* shift right 1 bit to make sure it not exceed 255 */
 137                         (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
 138                          RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
 139                         (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
 140                          RTE_MBUF_F_RX_L4_CKSUM_BAD) >> 1,
 141                         (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
 142                         (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD) >> 1,
 143                         (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
 144                         (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD) >> 1,
 145                         RTE_MBUF_F_RX_IP_CKSUM_BAD >> 1,
 146                         (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD) >> 1);
 147
 148         vlan0 = _mm_unpackhi_epi32(descs[0], descs[1]);
 149         vlan1 = _mm_unpackhi_epi32(descs[2], descs[3]);
 150         vlan0 = _mm_unpacklo_epi64(vlan0, vlan1);
 151
 152         vlan1 = _mm_and_si128(vlan0, rss_vlan_msk);
 153         vlan0 = _mm_shuffle_epi8(vlan_flags, vlan1);
 154
 155         rss = _mm_srli_epi32(vlan1, 11);
 156         rss = _mm_shuffle_epi8(rss_flags, rss);
 157
 158         l3_l4e = _mm_srli_epi32(vlan1, 22);
 159         l3_l4e = _mm_shuffle_epi8(l3_l4e_flags, l3_l4e);
 160         /* then we shift left 1 bit */
 161         l3_l4e = _mm_slli_epi32(l3_l4e, 1);
 162         /* we need to mask out the reduntant bits */
 163         l3_l4e = _mm_and_si128(l3_l4e, cksum_mask);
 164
 165         vlan0 = _mm_or_si128(vlan0, rss);
 166         vlan0 = _mm_or_si128(vlan0, l3_l4e);
 167
 168         /* At this point, we have the 4 sets of flags in the low 16-bits
 169          * of each 32-bit value in vlan0.
 170          * We want to extract these, and merge them with the mbuf init data
 171          * so we can do a single 16-byte write to the mbuf to set the flags
 172          * and all the other initialization fields. Extracting the
 173          * appropriate flags means that we have to do a shift and blend for
 174          * each mbuf before we do the write.
 175          */
 176         rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 8), 0x10);
 177         rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(vlan0, 4), 0x10);
 178         rearm2 = _mm_blend_epi16(mbuf_init, vlan0, 0x10);
 179         rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(vlan0, 4), 0x10);
 180
 181         /* write the rearm data and the olflags in one write */
 182         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
 183                         offsetof(struct rte_mbuf, rearm_data) + 8);
 184         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
 185                         RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));
 186         _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
 187         _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
 188         _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
 189         _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
 190 }
 191
 192 static inline __m128i
 193 flex_rxd_to_fdir_flags_vec(const __m128i fdir_id0_3)
 194 {
 195 #define FDID_MIS_MAGIC 0xFFFFFFFF
 196         RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR != (1 << 2));
 197         RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR_ID != (1 << 13));
 198         const __m128i pkt_fdir_bit = _mm_set1_epi32(RTE_MBUF_F_RX_FDIR |
 199                         RTE_MBUF_F_RX_FDIR_ID);
 200         /* desc->flow_id field == 0xFFFFFFFF means fdir mismatch */
 201         const __m128i fdir_mis_mask = _mm_set1_epi32(FDID_MIS_MAGIC);
 202         __m128i fdir_mask = _mm_cmpeq_epi32(fdir_id0_3,
 203                         fdir_mis_mask);
 204         /* this XOR op results to bit-reverse the fdir_mask */
 205         fdir_mask = _mm_xor_si128(fdir_mask, fdir_mis_mask);
 206         const __m128i fdir_flags = _mm_and_si128(fdir_mask, pkt_fdir_bit);
 207
 208         return fdir_flags;
 209 }
 210
 211 static inline void
 212 flex_desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
 213                        struct rte_mbuf **rx_pkts)
 214 {
 215         const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
 216         __m128i rearm0, rearm1, rearm2, rearm3;
 217
 218         __m128i tmp_desc, flags, rss_vlan;
 219
 220         /* mask everything except checksum, RSS and VLAN flags.
 221          * bit6:4 for checksum.
 222          * bit12 for RSS indication.
 223          * bit13 for VLAN indication.
 224          */
 225         const __m128i desc_mask = _mm_set_epi32(0x3070, 0x3070,
 226                                                 0x3070, 0x3070);
 227
 228         const __m128i cksum_mask = _mm_set_epi32(RTE_MBUF_F_RX_IP_CKSUM_MASK |
 229                                                  RTE_MBUF_F_RX_L4_CKSUM_MASK |
 230                                                  RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
 231                                                  RTE_MBUF_F_RX_IP_CKSUM_MASK |
 232                                                  RTE_MBUF_F_RX_L4_CKSUM_MASK |
 233                                                  RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
 234                                                  RTE_MBUF_F_RX_IP_CKSUM_MASK |
 235                                                  RTE_MBUF_F_RX_L4_CKSUM_MASK |
 236                                                  RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD,
 237                                                  RTE_MBUF_F_RX_IP_CKSUM_MASK |
 238                                                  RTE_MBUF_F_RX_L4_CKSUM_MASK |
 239                                                  RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD);
 240
 241         /* map the checksum, rss and vlan fields to the checksum, rss
 242          * and vlan flag
 243          */
 244         const __m128i cksum_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
 245                         /* shift right 1 bit to make sure it not exceed 255 */
 246                         (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
 247                          RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
 248                         (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
 249                          RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
 250                         (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
 251                          RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
 252                         (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
 253                          RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
 254                         (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
 255                         (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
 256                         (RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
 257                         (RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1);
 258
 259         const __m128i rss_vlan_flags = _mm_set_epi8(0, 0, 0, 0,
 260                         0, 0, 0, 0,
 261                         0, 0, 0, 0,
 262                         RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
 263                         RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
 264                         RTE_MBUF_F_RX_RSS_HASH, 0);
 265
 266         /* merge 4 descriptors */
 267         flags = _mm_unpackhi_epi32(descs[0], descs[1]);
 268         tmp_desc = _mm_unpackhi_epi32(descs[2], descs[3]);
 269         tmp_desc = _mm_unpacklo_epi64(flags, tmp_desc);
 270         tmp_desc = _mm_and_si128(tmp_desc, desc_mask);
 271
 272         /* checksum flags */
 273         tmp_desc = _mm_srli_epi32(tmp_desc, 4);
 274         flags = _mm_shuffle_epi8(cksum_flags, tmp_desc);
 275         /* then we shift left 1 bit */
 276         flags = _mm_slli_epi32(flags, 1);
 277         /* we need to mask out the redundant bits introduced by RSS or
 278          * VLAN fields.
 279          */
 280         flags = _mm_and_si128(flags, cksum_mask);
 281
 282         /* RSS, VLAN flag */
 283         tmp_desc = _mm_srli_epi32(tmp_desc, 8);
 284         rss_vlan = _mm_shuffle_epi8(rss_vlan_flags, tmp_desc);
 285
 286         /* merge the flags */
 287         flags = _mm_or_si128(flags, rss_vlan);
 288
 289         if (rxq->fdir_enabled) {
 290                 const __m128i fdir_id0_1 =
 291                         _mm_unpackhi_epi32(descs[0], descs[1]);
 292
 293                 const __m128i fdir_id2_3 =
 294                         _mm_unpackhi_epi32(descs[2], descs[3]);
 295
 296                 const __m128i fdir_id0_3 =
 297                         _mm_unpackhi_epi64(fdir_id0_1, fdir_id2_3);
 298
 299                 const __m128i fdir_flags =
 300                         flex_rxd_to_fdir_flags_vec(fdir_id0_3);
 301
 302                 /* merge with fdir_flags */
 303                 flags = _mm_or_si128(flags, fdir_flags);
 304
 305                 /* write fdir_id to mbuf */
 306                 rx_pkts[0]->hash.fdir.hi =
 307                         _mm_extract_epi32(fdir_id0_3, 0);
 308
 309                 rx_pkts[1]->hash.fdir.hi =
 310                         _mm_extract_epi32(fdir_id0_3, 1);
 311
 312                 rx_pkts[2]->hash.fdir.hi =
 313                         _mm_extract_epi32(fdir_id0_3, 2);
 314
 315                 rx_pkts[3]->hash.fdir.hi =
 316                         _mm_extract_epi32(fdir_id0_3, 3);
 317         } /* if() on fdir_enabled */
 318
 319         /**
 320          * At this point, we have the 4 sets of flags in the low 16-bits
 321          * of each 32-bit value in flags.
 322          * We want to extract these, and merge them with the mbuf init data
 323          * so we can do a single 16-byte write to the mbuf to set the flags
 324          * and all the other initialization fields. Extracting the
 325          * appropriate flags means that we have to do a shift and blend for
 326          * each mbuf before we do the write.
 327          */
 328         rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(flags, 8), 0x10);
 329         rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(flags, 4), 0x10);
 330         rearm2 = _mm_blend_epi16(mbuf_init, flags, 0x10);
 331         rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(flags, 4), 0x10);
 332
 333         /* write the rearm data and the olflags in one write */
 334         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
 335                          offsetof(struct rte_mbuf, rearm_data) + 8);
 336         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
 337                          RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));
 338         _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
 339         _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
 340         _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
 341         _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
 342 }
 343
 344 #define PKTLEN_SHIFT     10
 345
 346 static inline void
 347 desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
 348                 const uint32_t *type_table)
 349 {
 350         __m128i ptype0 = _mm_unpackhi_epi64(descs[0], descs[1]);
 351         __m128i ptype1 = _mm_unpackhi_epi64(descs[2], descs[3]);
 352
 353         ptype0 = _mm_srli_epi64(ptype0, 30);
 354         ptype1 = _mm_srli_epi64(ptype1, 30);
 355
 356         rx_pkts[0]->packet_type = type_table[_mm_extract_epi8(ptype0, 0)];
 357         rx_pkts[1]->packet_type = type_table[_mm_extract_epi8(ptype0, 8)];
 358         rx_pkts[2]->packet_type = type_table[_mm_extract_epi8(ptype1, 0)];
 359         rx_pkts[3]->packet_type = type_table[_mm_extract_epi8(ptype1, 8)];
 360 }
 361
 362 static inline void
 363 flex_desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
 364                      const uint32_t *type_table)
 365 {
 366         const __m128i ptype_mask =
 367                         _mm_set_epi16(IAVF_RX_FLEX_DESC_PTYPE_M, 0x0,
 368                                 IAVF_RX_FLEX_DESC_PTYPE_M, 0x0,
 369                                 IAVF_RX_FLEX_DESC_PTYPE_M, 0x0,
 370                                 IAVF_RX_FLEX_DESC_PTYPE_M, 0x0);
 371
 372         __m128i ptype_01 = _mm_unpacklo_epi32(descs[0], descs[1]);
 373         __m128i ptype_23 = _mm_unpacklo_epi32(descs[2], descs[3]);
 374         __m128i ptype_all = _mm_unpacklo_epi64(ptype_01, ptype_23);
 375
 376         ptype_all = _mm_and_si128(ptype_all, ptype_mask);
 377
 378         rx_pkts[0]->packet_type = type_table[_mm_extract_epi16(ptype_all, 1)];
 379         rx_pkts[1]->packet_type = type_table[_mm_extract_epi16(ptype_all, 3)];
 380         rx_pkts[2]->packet_type = type_table[_mm_extract_epi16(ptype_all, 5)];
 381         rx_pkts[3]->packet_type = type_table[_mm_extract_epi16(ptype_all, 7)];
 382 }
 383
 384 /**
 385  * vPMD raw receive routine, only accept(nb_pkts >= IAVF_VPMD_DESCS_PER_LOOP)
 386  *
 387  * Notice:
 388  * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
 389  * - floor align nb_pkts to a IAVF_VPMD_DESCS_PER_LOOP power-of-two
 390  */
 391 static inline uint16_t
 392 _recv_raw_pkts_vec(struct iavf_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 393                    uint16_t nb_pkts, uint8_t *split_packet)
 394 {
 395         volatile union iavf_rx_desc *rxdp;
 396         struct rte_mbuf **sw_ring;
 397         uint16_t nb_pkts_recd;
 398         int pos;
 399         uint64_t var;
 400         __m128i shuf_msk;
 401         const uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl;
 402
 403         __m128i crc_adjust = _mm_set_epi16(
 404                                 0, 0, 0,    /* ignore non-length fields */
 405                                 -rxq->crc_len, /* sub crc on data_len */
 406                                 0,          /* ignore high-16bits of pkt_len */
 407                                 -rxq->crc_len, /* sub crc on pkt_len */
 408                                 0, 0            /* ignore pkt_type field */
 409                         );
 410         /* compile-time check the above crc_adjust layout is correct.
 411          * NOTE: the first field (lowest address) is given last in set_epi16
 412          * call above.
 413          */
 414         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
 415                         offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
 416         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
 417                         offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
 418         __m128i dd_check, eop_check;
 419
 420         /* nb_pkts has to be floor-aligned to IAVF_VPMD_DESCS_PER_LOOP */
 421         nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IAVF_VPMD_DESCS_PER_LOOP);
 422
 423         /* Just the act of getting into the function from the application is
 424          * going to cost about 7 cycles
 425          */
 426         rxdp = rxq->rx_ring + rxq->rx_tail;
 427
 428         rte_prefetch0(rxdp);
 429
 430         /* See if we need to rearm the RX queue - gives the prefetch a bit
 431          * of time to act
 432          */
 433         if (rxq->rxrearm_nb > rxq->rx_free_thresh)
 434                 iavf_rxq_rearm(rxq);
 435
 436         /* Before we start moving massive data around, check to see if
 437          * there is actually a packet available
 438          */
 439         if (!(rxdp->wb.qword1.status_error_len &
 440               rte_cpu_to_le_32(1 << IAVF_RX_DESC_STATUS_DD_SHIFT)))
 441                 return 0;
 442
 443         /* 4 packets DD mask */
 444         dd_check = _mm_set_epi64x(0x0000000100000001LL, 0x0000000100000001LL);
 445
 446         /* 4 packets EOP mask */
 447         eop_check = _mm_set_epi64x(0x0000000200000002LL, 0x0000000200000002LL);
 448
 449         /* mask to shuffle from desc. to mbuf */
 450         shuf_msk = _mm_set_epi8(
 451                 7, 6, 5, 4,  /* octet 4~7, 32bits rss */
 452                 3, 2,        /* octet 2~3, low 16 bits vlan_macip */
 453                 15, 14,      /* octet 15~14, 16 bits data_len */
 454                 0xFF, 0xFF,  /* skip high 16 bits pkt_len, zero out */
 455                 15, 14,      /* octet 15~14, low 16 bits pkt_len */
 456                 0xFF, 0xFF, 0xFF, 0xFF /* pkt_type set as unknown */
 457                 );
 458         /* Compile-time verify the shuffle mask
 459          * NOTE: some field positions already verified above, but duplicated
 460          * here for completeness in case of future modifications.
 461          */
 462         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
 463                         offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
 464         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
 465                         offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
 466         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
 467                         offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
 468         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
 469                         offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
 470
 471         /* Cache is empty -> need to scan the buffer rings, but first move
 472          * the next 'n' mbufs into the cache
 473          */
 474         sw_ring = &rxq->sw_ring[rxq->rx_tail];
 475
 476         /* A. load 4 packet in one loop
 477          * [A*. mask out 4 unused dirty field in desc]
 478          * B. copy 4 mbuf point from swring to rx_pkts
 479          * C. calc the number of DD bits among the 4 packets
 480          * [C*. extract the end-of-packet bit, if requested]
 481          * D. fill info. from desc to mbuf
 482          */
 483
 484         for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
 485              pos += IAVF_VPMD_DESCS_PER_LOOP,
 486              rxdp += IAVF_VPMD_DESCS_PER_LOOP) {
 487                 __m128i descs[IAVF_VPMD_DESCS_PER_LOOP];
 488                 __m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
 489                 __m128i zero, staterr, sterr_tmp1, sterr_tmp2;
 490                 /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
 491                 __m128i mbp1;
 492 #if defined(RTE_ARCH_X86_64)
 493                 __m128i mbp2;
 494 #endif
 495
 496                 /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
 497                 mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
 498                 /* Read desc statuses backwards to avoid race condition */
 499                 /* A.1 load desc[3] */
 500                 descs[3] = _mm_loadu_si128((__m128i *)(rxdp + 3));
 501                 rte_compiler_barrier();
 502
 503                 /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
 504                 _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
 505
 506 #if defined(RTE_ARCH_X86_64)
 507                 /* B.1 load 2 64 bit mbuf points */
 508                 mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos + 2]);
 509 #endif
 510
 511                 /* A.1 load desc[2-0] */
 512                 descs[2] = _mm_loadu_si128((__m128i *)(rxdp + 2));
 513                 rte_compiler_barrier();
 514                 descs[1] = _mm_loadu_si128((__m128i *)(rxdp + 1));
 515                 rte_compiler_barrier();
 516                 descs[0] = _mm_loadu_si128((__m128i *)(rxdp));
 517
 518 #if defined(RTE_ARCH_X86_64)
 519                 /* B.2 copy 2 mbuf point into rx_pkts  */
 520                 _mm_storeu_si128((__m128i *)&rx_pkts[pos + 2], mbp2);
 521 #endif
 522
 523                 if (split_packet) {
 524                         rte_mbuf_prefetch_part2(rx_pkts[pos]);
 525                         rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
 526                         rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
 527                         rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
 528                 }
 529
 530                 /* avoid compiler reorder optimization */
 531                 rte_compiler_barrier();
 532
 533                 /* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
 534                 const __m128i len3 = _mm_slli_epi32(descs[3], PKTLEN_SHIFT);
 535                 const __m128i len2 = _mm_slli_epi32(descs[2], PKTLEN_SHIFT);
 536
 537                 /* merge the now-aligned packet length fields back in */
 538                 descs[3] = _mm_blend_epi16(descs[3], len3, 0x80);
 539                 descs[2] = _mm_blend_epi16(descs[2], len2, 0x80);
 540
 541                 /* D.1 pkt 3,4 convert format from desc to pktmbuf */
 542                 pkt_mb4 = _mm_shuffle_epi8(descs[3], shuf_msk);
 543                 pkt_mb3 = _mm_shuffle_epi8(descs[2], shuf_msk);
 544
 545                 /* C.1 4=>2 status err info only */
 546                 sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
 547                 sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
 548
 549                 desc_to_olflags_v(rxq, descs, &rx_pkts[pos]);
 550
 551                 /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
 552                 pkt_mb4 = _mm_add_epi16(pkt_mb4, crc_adjust);
 553                 pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
 554
 555                 /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
 556                 const __m128i len1 = _mm_slli_epi32(descs[1], PKTLEN_SHIFT);
 557                 const __m128i len0 = _mm_slli_epi32(descs[0], PKTLEN_SHIFT);
 558
 559                 /* merge the now-aligned packet length fields back in */
 560                 descs[1] = _mm_blend_epi16(descs[1], len1, 0x80);
 561                 descs[0] = _mm_blend_epi16(descs[0], len0, 0x80);
 562
 563                 /* D.1 pkt 1,2 convert format from desc to pktmbuf */
 564                 pkt_mb2 = _mm_shuffle_epi8(descs[1], shuf_msk);
 565                 pkt_mb1 = _mm_shuffle_epi8(descs[0], shuf_msk);
 566
 567                 /* C.2 get 4 pkts status err value  */
 568                 zero = _mm_xor_si128(dd_check, dd_check);
 569                 staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
 570
 571                 /* D.3 copy final 3,4 data to rx_pkts */
 572                 _mm_storeu_si128(
 573                         (void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
 574                         pkt_mb4);
 575                 _mm_storeu_si128(
 576                         (void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
 577                         pkt_mb3);
 578
 579                 /* D.2 pkt 1,2 remove crc */
 580                 pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
 581                 pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
 582
 583                 /* C* extract and record EOP bit */
 584                 if (split_packet) {
 585                         __m128i eop_shuf_mask = _mm_set_epi8(
 586                                         0xFF, 0xFF, 0xFF, 0xFF,
 587                                         0xFF, 0xFF, 0xFF, 0xFF,
 588                                         0xFF, 0xFF, 0xFF, 0xFF,
 589                                         0x04, 0x0C, 0x00, 0x08
 590                                         );
 591
 592                         /* and with mask to extract bits, flipping 1-0 */
 593                         __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
 594                         /* the staterr values are not in order, as the count
 595                          * of dd bits doesn't care. However, for end of
 596                          * packet tracking, we do care, so shuffle. This also
 597                          * compresses the 32-bit values to 8-bit
 598                          */
 599                         eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
 600                         /* store the resulting 32-bit value */
 601                         *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
 602                         split_packet += IAVF_VPMD_DESCS_PER_LOOP;
 603                 }
 604
 605                 /* C.3 calc available number of desc */
 606                 staterr = _mm_and_si128(staterr, dd_check);
 607                 staterr = _mm_packs_epi32(staterr, zero);
 608
 609                 /* D.3 copy final 1,2 data to rx_pkts */
 610                 _mm_storeu_si128(
 611                         (void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
 612                         pkt_mb2);
 613                 _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
 614                                  pkt_mb1);
 615                 desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
 616                 /* C.4 calc avaialbe number of desc */
 617                 var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
 618                 nb_pkts_recd += var;
 619                 if (likely(var != IAVF_VPMD_DESCS_PER_LOOP))
 620                         break;
 621         }
 622
 623         /* Update our internal tail pointer */
 624         rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
 625         rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
 626         rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
 627
 628         return nb_pkts_recd;
 629 }
 630
 631 /**
 632  * vPMD raw receive routine for flex RxD,
 633  * only accept(nb_pkts >= IAVF_VPMD_DESCS_PER_LOOP)
 634  *
 635  * Notice:
 636  * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
 637  * - floor align nb_pkts to a IAVF_VPMD_DESCS_PER_LOOP power-of-two
 638  */
 639 static inline uint16_t
 640 _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
 641                             struct rte_mbuf **rx_pkts,
 642                             uint16_t nb_pkts, uint8_t *split_packet)
 643 {
 644         volatile union iavf_rx_flex_desc *rxdp;
 645         struct rte_mbuf **sw_ring;
 646         uint16_t nb_pkts_recd;
 647         int pos;
 648         uint64_t var;
 649         struct iavf_adapter *adapter = rxq->vsi->adapter;
 650         uint64_t offloads = adapter->dev_data->dev_conf.rxmode.offloads;
 651         const uint32_t *ptype_tbl = adapter->ptype_tbl;
 652         __m128i crc_adjust = _mm_set_epi16
 653                                 (0, 0, 0,       /* ignore non-length fields */
 654                                  -rxq->crc_len, /* sub crc on data_len */
 655                                  0,          /* ignore high-16bits of pkt_len */
 656                                  -rxq->crc_len, /* sub crc on pkt_len */
 657                                  0, 0           /* ignore pkt_type field */
 658                                 );
 659         const __m128i zero = _mm_setzero_si128();
 660         /* mask to shuffle from desc. to mbuf */
 661         const __m128i shuf_msk = _mm_set_epi8
 662                         (0xFF, 0xFF,
 663                          0xFF, 0xFF,  /* rss hash parsed separately */
 664                          11, 10,      /* octet 10~11, 16 bits vlan_macip */
 665                          5, 4,        /* octet 4~5, 16 bits data_len */
 666                          0xFF, 0xFF,  /* skip high 16 bits pkt_len, zero out */
 667                          5, 4,        /* octet 4~5, low 16 bits pkt_len */
 668                          0xFF, 0xFF,  /* pkt_type set as unknown */
 669                          0xFF, 0xFF   /* pkt_type set as unknown */
 670                         );
 671         const __m128i eop_shuf_mask = _mm_set_epi8(0xFF, 0xFF,
 672                                                    0xFF, 0xFF,
 673                                                    0xFF, 0xFF,
 674                                                    0xFF, 0xFF,
 675                                                    0xFF, 0xFF,
 676                                                    0xFF, 0xFF,
 677                                                    0x04, 0x0C,
 678                                                    0x00, 0x08);
 679
 680         /**
 681          * compile-time check the above crc_adjust layout is correct.
 682          * NOTE: the first field (lowest address) is given last in set_epi16
 683          * call above.
 684          */
 685         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
 686                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
 687         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
 688                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
 689
 690         /* 4 packets DD mask */
 691         const __m128i dd_check = _mm_set_epi64x(0x0000000100000001LL,
 692                                                 0x0000000100000001LL);
 693         /* 4 packets EOP mask */
 694         const __m128i eop_check = _mm_set_epi64x(0x0000000200000002LL,
 695                                                  0x0000000200000002LL);
 696
 697         /* nb_pkts has to be floor-aligned to IAVF_VPMD_DESCS_PER_LOOP */
 698         nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IAVF_VPMD_DESCS_PER_LOOP);
 699
 700         /* Just the act of getting into the function from the application is
 701          * going to cost about 7 cycles
 702          */
 703         rxdp = (union iavf_rx_flex_desc *)rxq->rx_ring + rxq->rx_tail;
 704
 705         rte_prefetch0(rxdp);
 706
 707         /* See if we need to rearm the RX queue - gives the prefetch a bit
 708          * of time to act
 709          */
 710         if (rxq->rxrearm_nb > rxq->rx_free_thresh)
 711                 iavf_rxq_rearm(rxq);
 712
 713         /* Before we start moving massive data around, check to see if
 714          * there is actually a packet available
 715          */
 716         if (!(rxdp->wb.status_error0 &
 717               rte_cpu_to_le_32(1 << IAVF_RX_FLEX_DESC_STATUS0_DD_S)))
 718                 return 0;
 719
 720         /**
 721          * Compile-time verify the shuffle mask
 722          * NOTE: some field positions already verified above, but duplicated
 723          * here for completeness in case of future modifications.
 724          */
 725         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
 726                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
 727         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
 728                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
 729         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
 730                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
 731         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
 732                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
 733
 734         /* Cache is empty -> need to scan the buffer rings, but first move
 735          * the next 'n' mbufs into the cache
 736          */
 737         sw_ring = &rxq->sw_ring[rxq->rx_tail];
 738
 739         /* A. load 4 packet in one loop
 740          * [A*. mask out 4 unused dirty field in desc]
 741          * B. copy 4 mbuf point from swring to rx_pkts
 742          * C. calc the number of DD bits among the 4 packets
 743          * [C*. extract the end-of-packet bit, if requested]
 744          * D. fill info. from desc to mbuf
 745          */
 746
 747         for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
 748              pos += IAVF_VPMD_DESCS_PER_LOOP,
 749              rxdp += IAVF_VPMD_DESCS_PER_LOOP) {
 750                 __m128i descs[IAVF_VPMD_DESCS_PER_LOOP];
 751                 __m128i pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
 752                 __m128i staterr, sterr_tmp1, sterr_tmp2;
 753                 /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
 754                 __m128i mbp1;
 755 #if defined(RTE_ARCH_X86_64)
 756                 __m128i mbp2;
 757 #endif
 758
 759                 /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
 760                 mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
 761                 /* Read desc statuses backwards to avoid race condition */
 762                 /* A.1 load desc[3] */
 763                 descs[3] = _mm_loadu_si128((__m128i *)(rxdp + 3));
 764                 rte_compiler_barrier();
 765
 766                 /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
 767                 _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
 768
 769 #if defined(RTE_ARCH_X86_64)
 770                 /* B.1 load 2 64 bit mbuf points */
 771                 mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos + 2]);
 772 #endif
 773
 774                 /* A.1 load desc[2-0] */
 775                 descs[2] = _mm_loadu_si128((__m128i *)(rxdp + 2));
 776                 rte_compiler_barrier();
 777                 descs[1] = _mm_loadu_si128((__m128i *)(rxdp + 1));
 778                 rte_compiler_barrier();
 779                 descs[0] = _mm_loadu_si128((__m128i *)(rxdp));
 780
 781 #if defined(RTE_ARCH_X86_64)
 782                 /* B.2 copy 2 mbuf point into rx_pkts  */
 783                 _mm_storeu_si128((__m128i *)&rx_pkts[pos + 2], mbp2);
 784 #endif
 785
 786                 if (split_packet) {
 787                         rte_mbuf_prefetch_part2(rx_pkts[pos]);
 788                         rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
 789                         rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
 790                         rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
 791                 }
 792
 793                 /* avoid compiler reorder optimization */
 794                 rte_compiler_barrier();
 795
 796                 /* D.1 pkt 3,4 convert format from desc to pktmbuf */
 797                 pkt_mb3 = _mm_shuffle_epi8(descs[3], shuf_msk);
 798                 pkt_mb2 = _mm_shuffle_epi8(descs[2], shuf_msk);
 799
 800                 /* D.1 pkt 1,2 convert format from desc to pktmbuf */
 801                 pkt_mb1 = _mm_shuffle_epi8(descs[1], shuf_msk);
 802                 pkt_mb0 = _mm_shuffle_epi8(descs[0], shuf_msk);
 803
 804                 /* C.1 4=>2 filter staterr info only */
 805                 sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
 806                 /* C.1 4=>2 filter staterr info only */
 807                 sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
 808
 809                 flex_desc_to_olflags_v(rxq, descs, &rx_pkts[pos]);
 810
 811                 /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
 812                 pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
 813                 pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
 814
 815                 /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
 816                 pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
 817                 pkt_mb0 = _mm_add_epi16(pkt_mb0, crc_adjust);
 818
 819 #ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
 820                 /**
 821                  * needs to load 2nd 16B of each desc for RSS hash parsing,
 822                  * will cause performance drop to get into this context.
 823                  */
 824                 if (offloads & RTE_ETH_RX_OFFLOAD_RSS_HASH) {
 825                         /* load bottom half of every 32B desc */
 826                         const __m128i raw_desc_bh3 =
 827                                 _mm_load_si128
 828                                         ((void *)(&rxdp[3].wb.status_error1));
 829                         rte_compiler_barrier();
 830                         const __m128i raw_desc_bh2 =
 831                                 _mm_load_si128
 832                                         ((void *)(&rxdp[2].wb.status_error1));
 833                         rte_compiler_barrier();
 834                         const __m128i raw_desc_bh1 =
 835                                 _mm_load_si128
 836                                         ((void *)(&rxdp[1].wb.status_error1));
 837                         rte_compiler_barrier();
 838                         const __m128i raw_desc_bh0 =
 839                                 _mm_load_si128
 840                                         ((void *)(&rxdp[0].wb.status_error1));
 841
 842                         /**
 843                          * to shift the 32b RSS hash value to the
 844                          * highest 32b of each 128b before mask
 845                          */
 846                         __m128i rss_hash3 =
 847                                 _mm_slli_epi64(raw_desc_bh3, 32);
 848                         __m128i rss_hash2 =
 849                                 _mm_slli_epi64(raw_desc_bh2, 32);
 850                         __m128i rss_hash1 =
 851                                 _mm_slli_epi64(raw_desc_bh1, 32);
 852                         __m128i rss_hash0 =
 853                                 _mm_slli_epi64(raw_desc_bh0, 32);
 854
 855                         __m128i rss_hash_msk =
 856                                 _mm_set_epi32(0xFFFFFFFF, 0, 0, 0);
 857
 858                         rss_hash3 = _mm_and_si128
 859                                         (rss_hash3, rss_hash_msk);
 860                         rss_hash2 = _mm_and_si128
 861                                         (rss_hash2, rss_hash_msk);
 862                         rss_hash1 = _mm_and_si128
 863                                         (rss_hash1, rss_hash_msk);
 864                         rss_hash0 = _mm_and_si128
 865                                         (rss_hash0, rss_hash_msk);
 866
 867                         pkt_mb3 = _mm_or_si128(pkt_mb3, rss_hash3);
 868                         pkt_mb2 = _mm_or_si128(pkt_mb2, rss_hash2);
 869                         pkt_mb1 = _mm_or_si128(pkt_mb1, rss_hash1);
 870                         pkt_mb0 = _mm_or_si128(pkt_mb0, rss_hash0);
 871                 } /* if() on RSS hash parsing */
 872 #endif
 873
 874                 /* C.2 get 4 pkts staterr value  */
 875                 staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
 876
 877                 /* D.3 copy final 3,4 data to rx_pkts */
 878                 _mm_storeu_si128
 879                         ((void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
 880                          pkt_mb3);
 881                 _mm_storeu_si128
 882                         ((void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
 883                          pkt_mb2);
 884
 885                 /* C* extract and record EOP bit */
 886                 if (split_packet) {
 887                         /* and with mask to extract bits, flipping 1-0 */
 888                         __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
 889                         /* the staterr values are not in order, as the count
 890                          * of dd bits doesn't care. However, for end of
 891                          * packet tracking, we do care, so shuffle. This also
 892                          * compresses the 32-bit values to 8-bit
 893                          */
 894                         eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
 895                         /* store the resulting 32-bit value */
 896                         *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
 897                         split_packet += IAVF_VPMD_DESCS_PER_LOOP;
 898                 }
 899
 900                 /* C.3 calc available number of desc */
 901                 staterr = _mm_and_si128(staterr, dd_check);
 902                 staterr = _mm_packs_epi32(staterr, zero);
 903
 904                 /* D.3 copy final 1,2 data to rx_pkts */
 905                 _mm_storeu_si128
 906                         ((void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
 907                          pkt_mb1);
 908                 _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
 909                                  pkt_mb0);
 910                 flex_desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
 911                 /* C.4 calc available number of desc */
 912                 var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
 913                 nb_pkts_recd += var;
 914                 if (likely(var != IAVF_VPMD_DESCS_PER_LOOP))
 915                         break;
 916         }
 917
 918         /* Update our internal tail pointer */
 919         rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
 920         rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
 921         rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
 922
 923         return nb_pkts_recd;
 924 }
 925
 926 /* Notice:
 927  * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
 928  * - nb_pkts > IAVF_VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
 929  *   numbers of DD bits
 930  */
 931 uint16_t
 932 iavf_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 933                   uint16_t nb_pkts)
 934 {
 935         return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
 936 }
 937
 938 /* Notice:
 939  * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
 940  * - nb_pkts > IAVF_VPMD_RX_MAX_BURST, only scan IAVF_VPMD_RX_MAX_BURST
 941  *   numbers of DD bits
 942  */
 943 uint16_t
 944 iavf_recv_pkts_vec_flex_rxd(void *rx_queue, struct rte_mbuf **rx_pkts,
 945                             uint16_t nb_pkts)
 946 {
 947         return _recv_raw_pkts_vec_flex_rxd(rx_queue, rx_pkts, nb_pkts, NULL);
 948 }
 949
 950 /**
 951  * vPMD receive routine that reassembles single burst of 32 scattered packets
 952  *
 953  * Notice:
 954  * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
 955  */
 956 static uint16_t
 957 iavf_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 958                               uint16_t nb_pkts)
 959 {
 960         struct iavf_rx_queue *rxq = rx_queue;
 961         uint8_t split_flags[IAVF_VPMD_RX_MAX_BURST] = {0};
 962         unsigned int i = 0;
 963
 964         /* get some new buffers */
 965         uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
 966                                               split_flags);
 967         if (nb_bufs == 0)
 968                 return 0;
 969
 970         /* happy day case, full burst + no packets to be joined */
 971         const uint64_t *split_fl64 = (uint64_t *)split_flags;
 972
 973         if (!rxq->pkt_first_seg &&
 974             split_fl64[0] == 0 && split_fl64[1] == 0 &&
 975             split_fl64[2] == 0 && split_fl64[3] == 0)
 976                 return nb_bufs;
 977
 978         /* reassemble any packets that need reassembly*/
 979         if (!rxq->pkt_first_seg) {
 980                 /* find the first split flag, and only reassemble then*/
 981                 while (i < nb_bufs && !split_flags[i])
 982                         i++;
 983                 if (i == nb_bufs)
 984                         return nb_bufs;
 985                 rxq->pkt_first_seg = rx_pkts[i];
 986         }
 987         return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
 988                 &split_flags[i]);
 989 }
 990
 991 /**
 992  * vPMD receive routine that reassembles scattered packets.
 993  */
 994 uint16_t
 995 iavf_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 996                              uint16_t nb_pkts)
 997 {
 998         uint16_t retval = 0;
 999
1000         while (nb_pkts > IAVF_VPMD_RX_MAX_BURST) {
1001                 uint16_t burst;
1002
1003                 burst = iavf_recv_scattered_burst_vec(rx_queue,
1004                                                       rx_pkts + retval,
1005                                                       IAVF_VPMD_RX_MAX_BURST);
1006                 retval += burst;
1007                 nb_pkts -= burst;
1008                 if (burst < IAVF_VPMD_RX_MAX_BURST)
1009                         return retval;
1010         }
1011
1012         return retval + iavf_recv_scattered_burst_vec(rx_queue,
1013                                                       rx_pkts + retval,
1014                                                       nb_pkts);
1015 }
1016
1017 /**
1018  * vPMD receive routine that reassembles single burst of 32 scattered packets
1019  * for flex RxD
1020  *
1021  * Notice:
1022  * - nb_pkts < IAVF_VPMD_DESCS_PER_LOOP, just return no packet
1023  */
1024 static uint16_t
1025 iavf_recv_scattered_burst_vec_flex_rxd(void *rx_queue,
1026                                        struct rte_mbuf **rx_pkts,
1027                                        uint16_t nb_pkts)
1028 {
1029         struct iavf_rx_queue *rxq = rx_queue;
1030         uint8_t split_flags[IAVF_VPMD_RX_MAX_BURST] = {0};
1031         unsigned int i = 0;
1032
1033         /* get some new buffers */
1034         uint16_t nb_bufs = _recv_raw_pkts_vec_flex_rxd(rxq, rx_pkts, nb_pkts,
1035                                               split_flags);
1036         if (nb_bufs == 0)
1037                 return 0;
1038
1039         /* happy day case, full burst + no packets to be joined */
1040         const uint64_t *split_fl64 = (uint64_t *)split_flags;
1041
1042         if (!rxq->pkt_first_seg &&
1043             split_fl64[0] == 0 && split_fl64[1] == 0 &&
1044             split_fl64[2] == 0 && split_fl64[3] == 0)
1045                 return nb_bufs;
1046
1047         /* reassemble any packets that need reassembly*/
1048         if (!rxq->pkt_first_seg) {
1049                 /* find the first split flag, and only reassemble then*/
1050                 while (i < nb_bufs && !split_flags[i])
1051                         i++;
1052                 if (i == nb_bufs)
1053                         return nb_bufs;
1054                 rxq->pkt_first_seg = rx_pkts[i];
1055         }
1056         return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
1057                 &split_flags[i]);
1058 }
1059
1060 /**
1061  * vPMD receive routine that reassembles scattered packets for flex RxD
1062  */
1063 uint16_t
1064 iavf_recv_scattered_pkts_vec_flex_rxd(void *rx_queue,
1065                                       struct rte_mbuf **rx_pkts,
1066                                       uint16_t nb_pkts)
1067 {
1068         uint16_t retval = 0;
1069
1070         while (nb_pkts > IAVF_VPMD_RX_MAX_BURST) {
1071                 uint16_t burst;
1072
1073                 burst = iavf_recv_scattered_burst_vec_flex_rxd(rx_queue,
1074                                                 rx_pkts + retval,
1075                                                 IAVF_VPMD_RX_MAX_BURST);
1076                 retval += burst;
1077                 nb_pkts -= burst;
1078                 if (burst < IAVF_VPMD_RX_MAX_BURST)
1079                         return retval;
1080         }
1081
1082         return retval + iavf_recv_scattered_burst_vec_flex_rxd(rx_queue,
1083                                                       rx_pkts + retval,
1084                                                       nb_pkts);
1085 }
1086
1087 static inline void
1088 vtx1(volatile struct iavf_tx_desc *txdp, struct rte_mbuf *pkt, uint64_t flags)
1089 {
1090         uint64_t high_qw =
1091                         (IAVF_TX_DESC_DTYPE_DATA |
1092                          ((uint64_t)flags  << IAVF_TXD_QW1_CMD_SHIFT) |
1093                          ((uint64_t)pkt->data_len <<
1094                           IAVF_TXD_QW1_TX_BUF_SZ_SHIFT));
1095
1096         __m128i descriptor = _mm_set_epi64x(high_qw,
1097                                             pkt->buf_iova + pkt->data_off);
1098         _mm_store_si128((__m128i *)txdp, descriptor);
1099 }
1100
1101 static inline void
1102 iavf_vtx(volatile struct iavf_tx_desc *txdp, struct rte_mbuf **pkt,
1103         uint16_t nb_pkts,  uint64_t flags)
1104 {
1105         int i;
1106
1107         for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
1108                 vtx1(txdp, *pkt, flags);
1109 }
1110
1111 uint16_t
1112 iavf_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
1113                          uint16_t nb_pkts)
1114 {
1115         struct iavf_tx_queue *txq = (struct iavf_tx_queue *)tx_queue;
1116         volatile struct iavf_tx_desc *txdp;
1117         struct iavf_tx_entry *txep;
1118         uint16_t n, nb_commit, tx_id;
1119         uint64_t flags = IAVF_TX_DESC_CMD_EOP | 0x04;  /* bit 2 must be set */
1120         uint64_t rs = IAVF_TX_DESC_CMD_RS | flags;
1121         int i;
1122
1123         /* cross rx_thresh boundary is not allowed */
1124         nb_pkts = RTE_MIN(nb_pkts, txq->rs_thresh);
1125
1126         if (txq->nb_free < txq->free_thresh)
1127                 iavf_tx_free_bufs(txq);
1128
1129         nb_pkts = (uint16_t)RTE_MIN(txq->nb_free, nb_pkts);
1130         if (unlikely(nb_pkts == 0))
1131                 return 0;
1132         nb_commit = nb_pkts;
1133
1134         tx_id = txq->tx_tail;
1135         txdp = &txq->tx_ring[tx_id];
1136         txep = &txq->sw_ring[tx_id];
1137
1138         txq->nb_free = (uint16_t)(txq->nb_free - nb_pkts);
1139
1140         n = (uint16_t)(txq->nb_tx_desc - tx_id);
1141         if (nb_commit >= n) {
1142                 tx_backlog_entry(txep, tx_pkts, n);
1143
1144                 for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
1145                         vtx1(txdp, *tx_pkts, flags);
1146
1147                 vtx1(txdp, *tx_pkts++, rs);
1148
1149                 nb_commit = (uint16_t)(nb_commit - n);
1150
1151                 tx_id = 0;
1152                 txq->next_rs = (uint16_t)(txq->rs_thresh - 1);
1153
1154                 /* avoid reach the end of ring */
1155                 txdp = &txq->tx_ring[tx_id];
1156                 txep = &txq->sw_ring[tx_id];
1157         }
1158
1159         tx_backlog_entry(txep, tx_pkts, nb_commit);
1160
1161         iavf_vtx(txdp, tx_pkts, nb_commit, flags);
1162
1163         tx_id = (uint16_t)(tx_id + nb_commit);
1164         if (tx_id > txq->next_rs) {
1165                 txq->tx_ring[txq->next_rs].cmd_type_offset_bsz |=
1166                         rte_cpu_to_le_64(((uint64_t)IAVF_TX_DESC_CMD_RS) <<
1167                                          IAVF_TXD_QW1_CMD_SHIFT);
1168                 txq->next_rs =
1169                         (uint16_t)(txq->next_rs + txq->rs_thresh);
1170         }
1171
1172         txq->tx_tail = tx_id;
1173
1174         PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_pkts=%u",
1175                    txq->port_id, txq->queue_id, tx_id, nb_pkts);
1176
1177         IAVF_PCI_REG_WC_WRITE(txq->qtx_tail, txq->tx_tail);
1178
1179         return nb_pkts;
1180 }
1181
1182 uint16_t
1183 iavf_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
1184                    uint16_t nb_pkts)
1185 {
1186         uint16_t nb_tx = 0;
1187         struct iavf_tx_queue *txq = (struct iavf_tx_queue *)tx_queue;
1188
1189         while (nb_pkts) {
1190                 uint16_t ret, num;
1191
1192                 num = (uint16_t)RTE_MIN(nb_pkts, txq->rs_thresh);
1193                 ret = iavf_xmit_fixed_burst_vec(tx_queue, &tx_pkts[nb_tx], num);
1194                 nb_tx += ret;
1195                 nb_pkts -= ret;
1196                 if (ret < num)
1197                         break;
1198         }
1199
1200         return nb_tx;
1201 }
1202
1203 static void __rte_cold
1204 iavf_rx_queue_release_mbufs_sse(struct iavf_rx_queue *rxq)
1205 {
1206         _iavf_rx_queue_release_mbufs_vec(rxq);
1207 }
1208
1209 static void __rte_cold
1210 iavf_tx_queue_release_mbufs_sse(struct iavf_tx_queue *txq)
1211 {
1212         _iavf_tx_queue_release_mbufs_vec(txq);
1213 }
1214
1215 static const struct iavf_rxq_ops sse_vec_rxq_ops = {
1216         .release_mbufs = iavf_rx_queue_release_mbufs_sse,
1217 };
1218
1219 static const struct iavf_txq_ops sse_vec_txq_ops = {
1220         .release_mbufs = iavf_tx_queue_release_mbufs_sse,
1221 };
1222
1223 int __rte_cold
1224 iavf_txq_vec_setup(struct iavf_tx_queue *txq)
1225 {
1226         txq->ops = &sse_vec_txq_ops;
1227         return 0;
1228 }
1229
1230 int __rte_cold
1231 iavf_rxq_vec_setup(struct iavf_rx_queue *rxq)
1232 {
1233         rxq->ops = &sse_vec_rxq_ops;
1234         return iavf_rxq_vec_setup_default(rxq);
1235 }
1236
1237 int __rte_cold
1238 iavf_rx_vec_dev_check(struct rte_eth_dev *dev)
1239 {
1240         return iavf_rx_vec_dev_check_default(dev);
1241 }
1242
1243 int __rte_cold
1244 iavf_tx_vec_dev_check(struct rte_eth_dev *dev)
1245 {
1246         return iavf_tx_vec_dev_check_default(dev);
1247 }