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 __m128i
  14 ice_flex_rxd_to_fdir_flags_vec(const __m128i fdir_id0_3)
  15 {
  16 #define FDID_MIS_MAGIC 0xFFFFFFFF
  17         RTE_BUILD_BUG_ON(PKT_RX_FDIR != (1 << 2));
  18         RTE_BUILD_BUG_ON(PKT_RX_FDIR_ID != (1 << 13));
  19         const __m128i pkt_fdir_bit = _mm_set1_epi32(PKT_RX_FDIR |
  20                         PKT_RX_FDIR_ID);
  21         /* desc->flow_id field == 0xFFFFFFFF means fdir mismatch */
  22         const __m128i fdir_mis_mask = _mm_set1_epi32(FDID_MIS_MAGIC);
  23         __m128i fdir_mask = _mm_cmpeq_epi32(fdir_id0_3,
  24                         fdir_mis_mask);
  25         /* this XOR op results to bit-reverse the fdir_mask */
  26         fdir_mask = _mm_xor_si128(fdir_mask, fdir_mis_mask);
  27         const __m128i fdir_flags = _mm_and_si128(fdir_mask, pkt_fdir_bit);
  28
  29         return fdir_flags;
  30 }
  31
  32 static inline void
  33 ice_rxq_rearm(struct ice_rx_queue *rxq)
  34 {
  35         int i;
  36         uint16_t rx_id;
  37         volatile union ice_rx_flex_desc *rxdp;
  38         struct ice_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
  39         struct rte_mbuf *mb0, *mb1;
  40         __m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM,
  41                                           RTE_PKTMBUF_HEADROOM);
  42         __m128i dma_addr0, dma_addr1;
  43
  44         rxdp = rxq->rx_ring + rxq->rxrearm_start;
  45
  46         /* Pull 'n' more MBUFs into the software ring */
  47         if (rte_mempool_get_bulk(rxq->mp,
  48                                  (void *)rxep,
  49                                  ICE_RXQ_REARM_THRESH) < 0) {
  50                 if (rxq->rxrearm_nb + ICE_RXQ_REARM_THRESH >=
  51                     rxq->nb_rx_desc) {
  52                         dma_addr0 = _mm_setzero_si128();
  53                         for (i = 0; i < ICE_DESCS_PER_LOOP; i++) {
  54                                 rxep[i].mbuf = &rxq->fake_mbuf;
  55                                 _mm_store_si128((__m128i *)&rxdp[i].read,
  56                                                 dma_addr0);
  57                         }
  58                 }
  59                 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
  60                         ICE_RXQ_REARM_THRESH;
  61                 return;
  62         }
  63
  64         /* Initialize the mbufs in vector, process 2 mbufs in one loop */
  65         for (i = 0; i < ICE_RXQ_REARM_THRESH; i += 2, rxep += 2) {
  66                 __m128i vaddr0, vaddr1;
  67
  68                 mb0 = rxep[0].mbuf;
  69                 mb1 = rxep[1].mbuf;
  70
  71                 /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
  72                 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) !=
  73                                  offsetof(struct rte_mbuf, buf_addr) + 8);
  74                 vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr);
  75                 vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr);
  76
  77                 /* convert pa to dma_addr hdr/data */
  78                 dma_addr0 = _mm_unpackhi_epi64(vaddr0, vaddr0);
  79                 dma_addr1 = _mm_unpackhi_epi64(vaddr1, vaddr1);
  80
  81                 /* add headroom to pa values */
  82                 dma_addr0 = _mm_add_epi64(dma_addr0, hdr_room);
  83                 dma_addr1 = _mm_add_epi64(dma_addr1, hdr_room);
  84
  85                 /* flush desc with pa dma_addr */
  86                 _mm_store_si128((__m128i *)&rxdp++->read, dma_addr0);
  87                 _mm_store_si128((__m128i *)&rxdp++->read, dma_addr1);
  88         }
  89
  90         rxq->rxrearm_start += ICE_RXQ_REARM_THRESH;
  91         if (rxq->rxrearm_start >= rxq->nb_rx_desc)
  92                 rxq->rxrearm_start = 0;
  93
  94         rxq->rxrearm_nb -= ICE_RXQ_REARM_THRESH;
  95
  96         rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
  97                            (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
  98
  99         /* Update the tail pointer on the NIC */
 100         ICE_PCI_REG_WC_WRITE(rxq->qrx_tail, rx_id);
 101 }
 102
 103 static inline void
 104 ice_rx_desc_to_olflags_v(struct ice_rx_queue *rxq, __m128i descs[4],
 105                          struct rte_mbuf **rx_pkts)
 106 {
 107         const __m128i mbuf_init = _mm_set_epi64x(0, rxq->mbuf_initializer);
 108         __m128i rearm0, rearm1, rearm2, rearm3;
 109
 110         __m128i tmp_desc, flags, rss_vlan;
 111
 112         /* mask everything except checksum, RSS and VLAN flags.
 113          * bit6:4 for checksum.
 114          * bit12 for RSS indication.
 115          * bit13 for VLAN indication.
 116          */
 117         const __m128i desc_mask = _mm_set_epi32(0x30f0, 0x30f0,
 118                                                 0x30f0, 0x30f0);
 119         const __m128i cksum_mask = _mm_set_epi32(PKT_RX_IP_CKSUM_MASK |
 120                                                  PKT_RX_L4_CKSUM_MASK |
 121                                                  PKT_RX_OUTER_L4_CKSUM_MASK |
 122                                                  PKT_RX_OUTER_IP_CKSUM_BAD,
 123                                                  PKT_RX_IP_CKSUM_MASK |
 124                                                  PKT_RX_L4_CKSUM_MASK |
 125                                                  PKT_RX_OUTER_L4_CKSUM_MASK |
 126                                                  PKT_RX_OUTER_IP_CKSUM_BAD,
 127                                                  PKT_RX_IP_CKSUM_MASK |
 128                                                  PKT_RX_L4_CKSUM_MASK |
 129                                                  PKT_RX_OUTER_L4_CKSUM_MASK |
 130                                                  PKT_RX_OUTER_IP_CKSUM_BAD,
 131                                                  PKT_RX_IP_CKSUM_MASK |
 132                                                  PKT_RX_L4_CKSUM_MASK |
 133                                                  PKT_RX_OUTER_L4_CKSUM_MASK |
 134                                                  PKT_RX_OUTER_IP_CKSUM_BAD);
 135
 136         /* map the checksum, rss and vlan fields to the checksum, rss
 137          * and vlan flag
 138          */
 139         const __m128i cksum_flags =
 140                 _mm_set_epi8((PKT_RX_OUTER_L4_CKSUM_BAD >> 20 |
 141                  PKT_RX_OUTER_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD |
 142                   PKT_RX_IP_CKSUM_BAD) >> 1,
 143                 (PKT_RX_OUTER_L4_CKSUM_BAD >> 20 | PKT_RX_OUTER_IP_CKSUM_BAD |
 144                  PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_GOOD) >> 1,
 145                 (PKT_RX_OUTER_L4_CKSUM_BAD >> 20 | PKT_RX_OUTER_IP_CKSUM_BAD |
 146                  PKT_RX_L4_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD) >> 1,
 147                 (PKT_RX_OUTER_L4_CKSUM_BAD >> 20 | PKT_RX_OUTER_IP_CKSUM_BAD |
 148                  PKT_RX_L4_CKSUM_GOOD | PKT_RX_IP_CKSUM_GOOD) >> 1,
 149                 (PKT_RX_OUTER_L4_CKSUM_BAD >> 20 | PKT_RX_L4_CKSUM_BAD |
 150                  PKT_RX_IP_CKSUM_BAD) >> 1,
 151                 (PKT_RX_OUTER_L4_CKSUM_BAD >> 20 | PKT_RX_L4_CKSUM_BAD |
 152                  PKT_RX_IP_CKSUM_GOOD) >> 1,
 153                 (PKT_RX_OUTER_L4_CKSUM_BAD >> 20 | PKT_RX_L4_CKSUM_GOOD |
 154                  PKT_RX_IP_CKSUM_BAD) >> 1,
 155                 (PKT_RX_OUTER_L4_CKSUM_BAD >> 20 | PKT_RX_L4_CKSUM_GOOD |
 156                  PKT_RX_IP_CKSUM_GOOD) >> 1,
 157                 /**
 158                  * shift right 20 bits to use the low two bits to indicate
 159                  * outer checksum status
 160                  * shift right 1 bit to make sure it not exceed 255
 161                  */
 162                 (PKT_RX_OUTER_L4_CKSUM_GOOD >> 20 | PKT_RX_OUTER_IP_CKSUM_BAD |
 163                  PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD) >> 1,
 164                 (PKT_RX_OUTER_L4_CKSUM_GOOD >> 20 | PKT_RX_OUTER_IP_CKSUM_BAD |
 165                  PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_GOOD) >> 1,
 166                 (PKT_RX_OUTER_L4_CKSUM_GOOD >> 20 | PKT_RX_OUTER_IP_CKSUM_BAD |
 167                  PKT_RX_L4_CKSUM_GOOD | PKT_RX_IP_CKSUM_BAD) >> 1,
 168                 (PKT_RX_OUTER_L4_CKSUM_GOOD >> 20 | PKT_RX_OUTER_IP_CKSUM_BAD |
 169                  PKT_RX_L4_CKSUM_GOOD | PKT_RX_IP_CKSUM_GOOD) >> 1,
 170                 (PKT_RX_OUTER_L4_CKSUM_GOOD >> 20 | PKT_RX_L4_CKSUM_BAD |
 171                  PKT_RX_IP_CKSUM_BAD) >> 1,
 172                 (PKT_RX_OUTER_L4_CKSUM_GOOD >> 20 | PKT_RX_L4_CKSUM_BAD |
 173                  PKT_RX_IP_CKSUM_GOOD) >> 1,
 174                 (PKT_RX_OUTER_L4_CKSUM_GOOD >> 20 | PKT_RX_L4_CKSUM_GOOD |
 175                  PKT_RX_IP_CKSUM_BAD) >> 1,
 176                 (PKT_RX_OUTER_L4_CKSUM_GOOD >> 20 | PKT_RX_L4_CKSUM_GOOD |
 177                  PKT_RX_IP_CKSUM_GOOD) >> 1);
 178
 179         const __m128i rss_vlan_flags = _mm_set_epi8(0, 0, 0, 0,
 180                         0, 0, 0, 0,
 181                         0, 0, 0, 0,
 182                         PKT_RX_RSS_HASH | PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 183                         PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED,
 184                         PKT_RX_RSS_HASH, 0);
 185
 186         /* merge 4 descriptors */
 187         flags = _mm_unpackhi_epi32(descs[0], descs[1]);
 188         tmp_desc = _mm_unpackhi_epi32(descs[2], descs[3]);
 189         tmp_desc = _mm_unpacklo_epi64(flags, tmp_desc);
 190         tmp_desc = _mm_and_si128(tmp_desc, desc_mask);
 191
 192         /* checksum flags */
 193         tmp_desc = _mm_srli_epi32(tmp_desc, 4);
 194         flags = _mm_shuffle_epi8(cksum_flags, tmp_desc);
 195         /* then we shift left 1 bit */
 196         flags = _mm_slli_epi32(flags, 1);
 197
 198         __m128i l4_outer_mask = _mm_set_epi32(0x6, 0x6, 0x6, 0x6);
 199         __m128i l4_outer_flags = _mm_and_si128(flags, l4_outer_mask);
 200         l4_outer_flags = _mm_slli_epi32(l4_outer_flags, 20);
 201
 202         __m128i l3_l4_mask = _mm_set_epi32(~0x6, ~0x6, ~0x6, ~0x6);
 203         __m128i l3_l4_flags = _mm_and_si128(flags, l3_l4_mask);
 204         flags = _mm_or_si128(l3_l4_flags, l4_outer_flags);
 205         /* we need to mask out the reduntant bits introduced by RSS or
 206          * VLAN fields.
 207          */
 208         flags = _mm_and_si128(flags, cksum_mask);
 209
 210         /* RSS, VLAN flag */
 211         tmp_desc = _mm_srli_epi32(tmp_desc, 8);
 212         rss_vlan = _mm_shuffle_epi8(rss_vlan_flags, tmp_desc);
 213
 214         /* merge the flags */
 215         flags = _mm_or_si128(flags, rss_vlan);
 216
 217         if (rxq->fdir_enabled) {
 218                 const __m128i fdir_id0_1 =
 219                         _mm_unpackhi_epi32(descs[0], descs[1]);
 220
 221                 const __m128i fdir_id2_3 =
 222                         _mm_unpackhi_epi32(descs[2], descs[3]);
 223
 224                 const __m128i fdir_id0_3 =
 225                         _mm_unpackhi_epi64(fdir_id0_1, fdir_id2_3);
 226
 227                 const __m128i fdir_flags =
 228                         ice_flex_rxd_to_fdir_flags_vec(fdir_id0_3);
 229
 230                 /* merge with fdir_flags */
 231                 flags = _mm_or_si128(flags, fdir_flags);
 232
 233                 /* write fdir_id to mbuf */
 234                 rx_pkts[0]->hash.fdir.hi =
 235                         _mm_extract_epi32(fdir_id0_3, 0);
 236
 237                 rx_pkts[1]->hash.fdir.hi =
 238                         _mm_extract_epi32(fdir_id0_3, 1);
 239
 240                 rx_pkts[2]->hash.fdir.hi =
 241                         _mm_extract_epi32(fdir_id0_3, 2);
 242
 243                 rx_pkts[3]->hash.fdir.hi =
 244                         _mm_extract_epi32(fdir_id0_3, 3);
 245         } /* if() on fdir_enabled */
 246
 247         /**
 248          * At this point, we have the 4 sets of flags in the low 16-bits
 249          * of each 32-bit value in flags.
 250          * We want to extract these, and merge them with the mbuf init data
 251          * so we can do a single 16-byte write to the mbuf to set the flags
 252          * and all the other initialization fields. Extracting the
 253          * appropriate flags means that we have to do a shift and blend for
 254          * each mbuf before we do the write.
 255          */
 256         rearm0 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(flags, 8), 0x30);
 257         rearm1 = _mm_blend_epi16(mbuf_init, _mm_slli_si128(flags, 4), 0x30);
 258         rearm2 = _mm_blend_epi16(mbuf_init, flags, 0x30);
 259         rearm3 = _mm_blend_epi16(mbuf_init, _mm_srli_si128(flags, 4), 0x30);
 260
 261         /* write the rearm data and the olflags in one write */
 262         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
 263                          offsetof(struct rte_mbuf, rearm_data) + 8);
 264         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
 265                          RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));
 266         _mm_store_si128((__m128i *)&rx_pkts[0]->rearm_data, rearm0);
 267         _mm_store_si128((__m128i *)&rx_pkts[1]->rearm_data, rearm1);
 268         _mm_store_si128((__m128i *)&rx_pkts[2]->rearm_data, rearm2);
 269         _mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
 270 }
 271
 272 static inline void
 273 ice_rx_desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts,
 274                        uint32_t *ptype_tbl)
 275 {
 276         const __m128i ptype_mask = _mm_set_epi16(ICE_RX_FLEX_DESC_PTYPE_M, 0,
 277                                                  ICE_RX_FLEX_DESC_PTYPE_M, 0,
 278                                                  ICE_RX_FLEX_DESC_PTYPE_M, 0,
 279                                                  ICE_RX_FLEX_DESC_PTYPE_M, 0);
 280         __m128i ptype_01 = _mm_unpacklo_epi32(descs[0], descs[1]);
 281         __m128i ptype_23 = _mm_unpacklo_epi32(descs[2], descs[3]);
 282         __m128i ptype_all = _mm_unpacklo_epi64(ptype_01, ptype_23);
 283
 284         ptype_all = _mm_and_si128(ptype_all, ptype_mask);
 285
 286         rx_pkts[0]->packet_type = ptype_tbl[_mm_extract_epi16(ptype_all, 1)];
 287         rx_pkts[1]->packet_type = ptype_tbl[_mm_extract_epi16(ptype_all, 3)];
 288         rx_pkts[2]->packet_type = ptype_tbl[_mm_extract_epi16(ptype_all, 5)];
 289         rx_pkts[3]->packet_type = ptype_tbl[_mm_extract_epi16(ptype_all, 7)];
 290 }
 291
 292 /**
 293  * vPMD raw receive routine, only accept(nb_pkts >= ICE_DESCS_PER_LOOP)
 294  *
 295  * Notice:
 296  * - nb_pkts < ICE_DESCS_PER_LOOP, just return no packet
 297  * - floor align nb_pkts to a ICE_DESCS_PER_LOOP power-of-two
 298  */
 299 static inline uint16_t
 300 _ice_recv_raw_pkts_vec(struct ice_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 301                        uint16_t nb_pkts, uint8_t *split_packet)
 302 {
 303         volatile union ice_rx_flex_desc *rxdp;
 304         struct ice_rx_entry *sw_ring;
 305         uint16_t nb_pkts_recd;
 306         int pos;
 307         uint64_t var;
 308         uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl;
 309         __m128i crc_adjust = _mm_set_epi16
 310                                 (0, 0, 0,       /* ignore non-length fields */
 311                                  -rxq->crc_len, /* sub crc on data_len */
 312                                  0,          /* ignore high-16bits of pkt_len */
 313                                  -rxq->crc_len, /* sub crc on pkt_len */
 314                                  0, 0           /* ignore pkt_type field */
 315                                 );
 316         const __m128i zero = _mm_setzero_si128();
 317         /* mask to shuffle from desc. to mbuf */
 318         const __m128i shuf_msk = _mm_set_epi8
 319                         (0xFF, 0xFF,
 320                          0xFF, 0xFF,  /* rss hash parsed separately */
 321                          11, 10,      /* octet 10~11, 16 bits vlan_macip */
 322                          5, 4,        /* octet 4~5, 16 bits data_len */
 323                          0xFF, 0xFF,  /* skip high 16 bits pkt_len, zero out */
 324                          5, 4,        /* octet 4~5, low 16 bits pkt_len */
 325                          0xFF, 0xFF,  /* pkt_type set as unknown */
 326                          0xFF, 0xFF   /* pkt_type set as unknown */
 327                         );
 328         const __m128i eop_shuf_mask = _mm_set_epi8(0xFF, 0xFF,
 329                                                    0xFF, 0xFF,
 330                                                    0xFF, 0xFF,
 331                                                    0xFF, 0xFF,
 332                                                    0xFF, 0xFF,
 333                                                    0xFF, 0xFF,
 334                                                    0x04, 0x0C,
 335                                                    0x00, 0x08);
 336
 337         /**
 338          * compile-time check the above crc_adjust layout is correct.
 339          * NOTE: the first field (lowest address) is given last in set_epi16
 340          * call above.
 341          */
 342         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
 343                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
 344         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
 345                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
 346
 347         /* 4 packets DD mask */
 348         const __m128i dd_check = _mm_set_epi64x(0x0000000100000001LL,
 349                                                 0x0000000100000001LL);
 350         /* 4 packets EOP mask */
 351         const __m128i eop_check = _mm_set_epi64x(0x0000000200000002LL,
 352                                                  0x0000000200000002LL);
 353
 354         /* nb_pkts has to be floor-aligned to ICE_DESCS_PER_LOOP */
 355         nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, ICE_DESCS_PER_LOOP);
 356
 357         /* Just the act of getting into the function from the application is
 358          * going to cost about 7 cycles
 359          */
 360         rxdp = rxq->rx_ring + rxq->rx_tail;
 361
 362         rte_prefetch0(rxdp);
 363
 364         /* See if we need to rearm the RX queue - gives the prefetch a bit
 365          * of time to act
 366          */
 367         if (rxq->rxrearm_nb > ICE_RXQ_REARM_THRESH)
 368                 ice_rxq_rearm(rxq);
 369
 370         /* Before we start moving massive data around, check to see if
 371          * there is actually a packet available
 372          */
 373         if (!(rxdp->wb.status_error0 &
 374               rte_cpu_to_le_32(1 << ICE_RX_FLEX_DESC_STATUS0_DD_S)))
 375                 return 0;
 376
 377         /**
 378          * Compile-time verify the shuffle mask
 379          * NOTE: some field positions already verified above, but duplicated
 380          * here for completeness in case of future modifications.
 381          */
 382         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
 383                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
 384         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
 385                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
 386         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
 387                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
 388         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
 389                          offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
 390
 391         /* Cache is empty -> need to scan the buffer rings, but first move
 392          * the next 'n' mbufs into the cache
 393          */
 394         sw_ring = &rxq->sw_ring[rxq->rx_tail];
 395
 396         /* A. load 4 packet in one loop
 397          * [A*. mask out 4 unused dirty field in desc]
 398          * B. copy 4 mbuf point from swring to rx_pkts
 399          * C. calc the number of DD bits among the 4 packets
 400          * [C*. extract the end-of-packet bit, if requested]
 401          * D. fill info. from desc to mbuf
 402          */
 403
 404         for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
 405              pos += ICE_DESCS_PER_LOOP,
 406              rxdp += ICE_DESCS_PER_LOOP) {
 407                 __m128i descs[ICE_DESCS_PER_LOOP];
 408                 __m128i pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3;
 409                 __m128i staterr, sterr_tmp1, sterr_tmp2;
 410                 /* 2 64 bit or 4 32 bit mbuf pointers in one XMM reg. */
 411                 __m128i mbp1;
 412 #if defined(RTE_ARCH_X86_64)
 413                 __m128i mbp2;
 414 #endif
 415
 416                 /* B.1 load 2 (64 bit) or 4 (32 bit) mbuf points */
 417                 mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
 418                 /* Read desc statuses backwards to avoid race condition */
 419                 /* A.1 load desc[3] */
 420                 descs[3] = _mm_loadu_si128((__m128i *)(rxdp + 3));
 421                 rte_compiler_barrier();
 422
 423                 /* B.2 copy 2 64 bit or 4 32 bit mbuf point into rx_pkts */
 424                 _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
 425
 426 #if defined(RTE_ARCH_X86_64)
 427                 /* B.1 load 2 64 bit mbuf points */
 428                 mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos + 2]);
 429 #endif
 430
 431                 /* A.1 load desc[2-0] */
 432                 descs[2] = _mm_loadu_si128((__m128i *)(rxdp + 2));
 433                 rte_compiler_barrier();
 434                 descs[1] = _mm_loadu_si128((__m128i *)(rxdp + 1));
 435                 rte_compiler_barrier();
 436                 descs[0] = _mm_loadu_si128((__m128i *)(rxdp));
 437
 438 #if defined(RTE_ARCH_X86_64)
 439                 /* B.2 copy 2 mbuf point into rx_pkts  */
 440                 _mm_storeu_si128((__m128i *)&rx_pkts[pos + 2], mbp2);
 441 #endif
 442
 443                 if (split_packet) {
 444                         rte_mbuf_prefetch_part2(rx_pkts[pos]);
 445                         rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
 446                         rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
 447                         rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
 448                 }
 449
 450                 /* avoid compiler reorder optimization */
 451                 rte_compiler_barrier();
 452
 453                 /* D.1 pkt 3,4 convert format from desc to pktmbuf */
 454                 pkt_mb3 = _mm_shuffle_epi8(descs[3], shuf_msk);
 455                 pkt_mb2 = _mm_shuffle_epi8(descs[2], shuf_msk);
 456
 457                 /* D.1 pkt 1,2 convert format from desc to pktmbuf */
 458                 pkt_mb1 = _mm_shuffle_epi8(descs[1], shuf_msk);
 459                 pkt_mb0 = _mm_shuffle_epi8(descs[0], shuf_msk);
 460
 461                 /* C.1 4=>2 filter staterr info only */
 462                 sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
 463                 /* C.1 4=>2 filter staterr info only */
 464                 sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
 465
 466                 ice_rx_desc_to_olflags_v(rxq, descs, &rx_pkts[pos]);
 467
 468                 /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
 469                 pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
 470                 pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
 471
 472                 /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
 473                 pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
 474                 pkt_mb0 = _mm_add_epi16(pkt_mb0, crc_adjust);
 475
 476 #ifndef RTE_LIBRTE_ICE_16BYTE_RX_DESC
 477                 /**
 478                  * needs to load 2nd 16B of each desc for RSS hash parsing,
 479                  * will cause performance drop to get into this context.
 480                  */
 481                 if (rxq->vsi->adapter->pf.dev_data->dev_conf.rxmode.offloads &
 482                                 DEV_RX_OFFLOAD_RSS_HASH) {
 483                         /* load bottom half of every 32B desc */
 484                         const __m128i raw_desc_bh3 =
 485                                 _mm_load_si128
 486                                         ((void *)(&rxdp[3].wb.status_error1));
 487                         rte_compiler_barrier();
 488                         const __m128i raw_desc_bh2 =
 489                                 _mm_load_si128
 490                                         ((void *)(&rxdp[2].wb.status_error1));
 491                         rte_compiler_barrier();
 492                         const __m128i raw_desc_bh1 =
 493                                 _mm_load_si128
 494                                         ((void *)(&rxdp[1].wb.status_error1));
 495                         rte_compiler_barrier();
 496                         const __m128i raw_desc_bh0 =
 497                                 _mm_load_si128
 498                                         ((void *)(&rxdp[0].wb.status_error1));
 499
 500                         /**
 501                          * to shift the 32b RSS hash value to the
 502                          * highest 32b of each 128b before mask
 503                          */
 504                         __m128i rss_hash3 =
 505                                 _mm_slli_epi64(raw_desc_bh3, 32);
 506                         __m128i rss_hash2 =
 507                                 _mm_slli_epi64(raw_desc_bh2, 32);
 508                         __m128i rss_hash1 =
 509                                 _mm_slli_epi64(raw_desc_bh1, 32);
 510                         __m128i rss_hash0 =
 511                                 _mm_slli_epi64(raw_desc_bh0, 32);
 512
 513                         __m128i rss_hash_msk =
 514                                 _mm_set_epi32(0xFFFFFFFF, 0, 0, 0);
 515
 516                         rss_hash3 = _mm_and_si128
 517                                         (rss_hash3, rss_hash_msk);
 518                         rss_hash2 = _mm_and_si128
 519                                         (rss_hash2, rss_hash_msk);
 520                         rss_hash1 = _mm_and_si128
 521                                         (rss_hash1, rss_hash_msk);
 522                         rss_hash0 = _mm_and_si128
 523                                         (rss_hash0, rss_hash_msk);
 524
 525                         pkt_mb3 = _mm_or_si128(pkt_mb3, rss_hash3);
 526                         pkt_mb2 = _mm_or_si128(pkt_mb2, rss_hash2);
 527                         pkt_mb1 = _mm_or_si128(pkt_mb1, rss_hash1);
 528                         pkt_mb0 = _mm_or_si128(pkt_mb0, rss_hash0);
 529                 } /* if() on RSS hash parsing */
 530 #endif
 531
 532                 /* C.2 get 4 pkts staterr value  */
 533                 staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
 534
 535                 /* D.3 copy final 3,4 data to rx_pkts */
 536                 _mm_storeu_si128
 537                         ((void *)&rx_pkts[pos + 3]->rx_descriptor_fields1,
 538                          pkt_mb3);
 539                 _mm_storeu_si128
 540                         ((void *)&rx_pkts[pos + 2]->rx_descriptor_fields1,
 541                          pkt_mb2);
 542
 543                 /* C* extract and record EOP bit */
 544                 if (split_packet) {
 545                         /* and with mask to extract bits, flipping 1-0 */
 546                         __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
 547                         /* the staterr values are not in order, as the count
 548                          * of dd bits doesn't care. However, for end of
 549                          * packet tracking, we do care, so shuffle. This also
 550                          * compresses the 32-bit values to 8-bit
 551                          */
 552                         eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
 553                         /* store the resulting 32-bit value */
 554                         *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
 555                         split_packet += ICE_DESCS_PER_LOOP;
 556                 }
 557
 558                 /* C.3 calc available number of desc */
 559                 staterr = _mm_and_si128(staterr, dd_check);
 560                 staterr = _mm_packs_epi32(staterr, zero);
 561
 562                 /* D.3 copy final 1,2 data to rx_pkts */
 563                 _mm_storeu_si128
 564                         ((void *)&rx_pkts[pos + 1]->rx_descriptor_fields1,
 565                          pkt_mb1);
 566                 _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
 567                                  pkt_mb0);
 568                 ice_rx_desc_to_ptype_v(descs, &rx_pkts[pos], ptype_tbl);
 569                 /* C.4 calc avaialbe number of desc */
 570                 var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
 571                 nb_pkts_recd += var;
 572                 if (likely(var != ICE_DESCS_PER_LOOP))
 573                         break;
 574         }
 575
 576         /* Update our internal tail pointer */
 577         rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
 578         rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
 579         rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
 580
 581         return nb_pkts_recd;
 582 }
 583
 584 /**
 585  * Notice:
 586  * - nb_pkts < ICE_DESCS_PER_LOOP, just return no packet
 587  * - nb_pkts > ICE_VPMD_RX_BURST, only scan ICE_VPMD_RX_BURST
 588  *   numbers of DD bits
 589  */
 590 uint16_t
 591 ice_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 592                   uint16_t nb_pkts)
 593 {
 594         return _ice_recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
 595 }
 596
 597 /**
 598  * vPMD receive routine that reassembles single burst of 32 scattered packets
 599  *
 600  * Notice:
 601  * - nb_pkts < ICE_DESCS_PER_LOOP, just return no packet
 602  */
 603 static uint16_t
 604 ice_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 605                              uint16_t nb_pkts)
 606 {
 607         struct ice_rx_queue *rxq = rx_queue;
 608         uint8_t split_flags[ICE_VPMD_RX_BURST] = {0};
 609
 610         /* get some new buffers */
 611         uint16_t nb_bufs = _ice_recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
 612                                                   split_flags);
 613         if (nb_bufs == 0)
 614                 return 0;
 615
 616         /* happy day case, full burst + no packets to be joined */
 617         const uint64_t *split_fl64 = (uint64_t *)split_flags;
 618
 619         if (!rxq->pkt_first_seg &&
 620             split_fl64[0] == 0 && split_fl64[1] == 0 &&
 621             split_fl64[2] == 0 && split_fl64[3] == 0)
 622                 return nb_bufs;
 623
 624         /* reassemble any packets that need reassembly*/
 625         unsigned int i = 0;
 626
 627         if (!rxq->pkt_first_seg) {
 628                 /* find the first split flag, and only reassemble then*/
 629                 while (i < nb_bufs && !split_flags[i])
 630                         i++;
 631                 if (i == nb_bufs)
 632                         return nb_bufs;
 633                 rxq->pkt_first_seg = rx_pkts[i];
 634         }
 635         return i + ice_rx_reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
 636                                              &split_flags[i]);
 637 }
 638
 639 /**
 640  * vPMD receive routine that reassembles scattered packets.
 641  */
 642 uint16_t
 643 ice_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 644                             uint16_t nb_pkts)
 645 {
 646         uint16_t retval = 0;
 647
 648         while (nb_pkts > ICE_VPMD_RX_BURST) {
 649                 uint16_t burst;
 650
 651                 burst = ice_recv_scattered_burst_vec(rx_queue,
 652                                                      rx_pkts + retval,
 653                                                      ICE_VPMD_RX_BURST);
 654                 retval += burst;
 655                 nb_pkts -= burst;
 656                 if (burst < ICE_VPMD_RX_BURST)
 657                         return retval;
 658         }
 659
 660         return retval + ice_recv_scattered_burst_vec(rx_queue,
 661                                                      rx_pkts + retval,
 662                                                      nb_pkts);
 663 }
 664
 665 static inline void
 666 ice_vtx1(volatile struct ice_tx_desc *txdp, struct rte_mbuf *pkt,
 667          uint64_t flags)
 668 {
 669         uint64_t high_qw =
 670                 (ICE_TX_DESC_DTYPE_DATA |
 671                  ((uint64_t)flags  << ICE_TXD_QW1_CMD_S) |
 672                  ((uint64_t)pkt->data_len << ICE_TXD_QW1_TX_BUF_SZ_S));
 673
 674         __m128i descriptor = _mm_set_epi64x(high_qw,
 675                                             pkt->buf_iova + pkt->data_off);
 676         _mm_store_si128((__m128i *)txdp, descriptor);
 677 }
 678
 679 static inline void
 680 ice_vtx(volatile struct ice_tx_desc *txdp, struct rte_mbuf **pkt,
 681         uint16_t nb_pkts, uint64_t flags)
 682 {
 683         int i;
 684
 685         for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
 686                 ice_vtx1(txdp, *pkt, flags);
 687 }
 688
 689 static uint16_t
 690 ice_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
 691                          uint16_t nb_pkts)
 692 {
 693         struct ice_tx_queue *txq = (struct ice_tx_queue *)tx_queue;
 694         volatile struct ice_tx_desc *txdp;
 695         struct ice_tx_entry *txep;
 696         uint16_t n, nb_commit, tx_id;
 697         uint64_t flags = ICE_TD_CMD;
 698         uint64_t rs = ICE_TX_DESC_CMD_RS | ICE_TD_CMD;
 699         int i;
 700
 701         /* cross rx_thresh boundary is not allowed */
 702         nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh);
 703
 704         if (txq->nb_tx_free < txq->tx_free_thresh)
 705                 ice_tx_free_bufs_vec(txq);
 706
 707         nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
 708         nb_commit = nb_pkts;
 709         if (unlikely(nb_pkts == 0))
 710                 return 0;
 711
 712         tx_id = txq->tx_tail;
 713         txdp = &txq->tx_ring[tx_id];
 714         txep = &txq->sw_ring[tx_id];
 715
 716         txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
 717
 718         n = (uint16_t)(txq->nb_tx_desc - tx_id);
 719         if (nb_commit >= n) {
 720                 ice_tx_backlog_entry(txep, tx_pkts, n);
 721
 722                 for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
 723                         ice_vtx1(txdp, *tx_pkts, flags);
 724
 725                 ice_vtx1(txdp, *tx_pkts++, rs);
 726
 727                 nb_commit = (uint16_t)(nb_commit - n);
 728
 729                 tx_id = 0;
 730                 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
 731
 732                 /* avoid reach the end of ring */
 733                 txdp = &txq->tx_ring[tx_id];
 734                 txep = &txq->sw_ring[tx_id];
 735         }
 736
 737         ice_tx_backlog_entry(txep, tx_pkts, nb_commit);
 738
 739         ice_vtx(txdp, tx_pkts, nb_commit, flags);
 740
 741         tx_id = (uint16_t)(tx_id + nb_commit);
 742         if (tx_id > txq->tx_next_rs) {
 743                 txq->tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
 744                         rte_cpu_to_le_64(((uint64_t)ICE_TX_DESC_CMD_RS) <<
 745                                          ICE_TXD_QW1_CMD_S);
 746                 txq->tx_next_rs =
 747                         (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
 748         }
 749
 750         txq->tx_tail = tx_id;
 751
 752         ICE_PCI_REG_WC_WRITE(txq->qtx_tail, txq->tx_tail);
 753
 754         return nb_pkts;
 755 }
 756
 757 uint16_t
 758 ice_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
 759                   uint16_t nb_pkts)
 760 {
 761         uint16_t nb_tx = 0;
 762         struct ice_tx_queue *txq = (struct ice_tx_queue *)tx_queue;
 763
 764         while (nb_pkts) {
 765                 uint16_t ret, num;
 766
 767                 num = (uint16_t)RTE_MIN(nb_pkts, txq->tx_rs_thresh);
 768                 ret = ice_xmit_fixed_burst_vec(tx_queue, &tx_pkts[nb_tx], num);
 769                 nb_tx += ret;
 770                 nb_pkts -= ret;
 771                 if (ret < num)
 772                         break;
 773         }
 774
 775         return nb_tx;
 776 }
 777
 778 int __rte_cold
 779 ice_rxq_vec_setup(struct ice_rx_queue *rxq)
 780 {
 781         if (!rxq)
 782                 return -1;
 783
 784         rxq->rx_rel_mbufs = _ice_rx_queue_release_mbufs_vec;
 785         return ice_rxq_vec_setup_default(rxq);
 786 }
 787
 788 int __rte_cold
 789 ice_txq_vec_setup(struct ice_tx_queue __rte_unused *txq)
 790 {
 791         if (!txq)
 792                 return -1;
 793
 794         txq->tx_rel_mbufs = _ice_tx_queue_release_mbufs_vec;
 795         return 0;
 796 }
 797
 798 int __rte_cold
 799 ice_rx_vec_dev_check(struct rte_eth_dev *dev)
 800 {
 801         return ice_rx_vec_dev_check_default(dev);
 802 }
 803
 804 int __rte_cold
 805 ice_tx_vec_dev_check(struct rte_eth_dev *dev)
 806 {
 807         return ice_tx_vec_dev_check_default(dev);
 808 }