1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2017 6WIND S.A. 3 * Copyright 2017 Mellanox Technologies, Ltd 4 */ 5 6 #ifndef RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_ 7 #define RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_ 8 9 #include <stdint.h> 10 #include <string.h> 11 #include <stdlib.h> 12 13 #include <rte_altivec.h> 14 15 #include <rte_mbuf.h> 16 #include <rte_mempool.h> 17 #include <rte_prefetch.h> 18 19 #include <mlx5_prm.h> 20 21 #include "mlx5_defs.h" 22 #include "mlx5.h" 23 #include "mlx5_utils.h" 24 #include "mlx5_rxtx.h" 25 #include "mlx5_rxtx_vec.h" 26 #include "mlx5_autoconf.h" 27 28 #ifndef __INTEL_COMPILER 29 #pragma GCC diagnostic ignored "-Wcast-qual" 30 #pragma GCC diagnostic ignored "-Wstrict-aliasing" 31 #endif 32 33 /** 34 * Store free buffers to RX SW ring. 35 * 36 * @param rxq 37 * Pointer to RX queue structure. 38 * @param pkts 39 * Pointer to array of packets to be stored. 40 * @param pkts_n 41 * Number of packets to be stored. 42 */ 43 static inline void 44 rxq_copy_mbuf_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t n) 45 { 46 const uint16_t q_mask = (1 << rxq->elts_n) - 1; 47 struct rte_mbuf **elts = &(*rxq->elts)[rxq->rq_pi & q_mask]; 48 unsigned int pos; 49 uint16_t p = n & -2; 50 51 for (pos = 0; pos < p; pos += 2) { 52 vector unsigned char mbp; 53 54 mbp = (vector unsigned char)vec_vsx_ld(0, 55 (signed int const *)&elts[pos]); 56 *(vector unsigned char *)&pkts[pos] = mbp; 57 } 58 if (n & 1) 59 pkts[pos] = elts[pos]; 60 } 61 62 /** 63 * Decompress a compressed completion and fill in mbufs in RX SW ring with data 64 * extracted from the title completion descriptor. 65 * 66 * @param rxq 67 * Pointer to RX queue structure. 68 * @param cq 69 * Pointer to completion array having a compressed completion at first. 70 * @param elts 71 * Pointer to SW ring to be filled. The first mbuf has to be pre-built from 72 * the title completion descriptor to be copied to the rest of mbufs. 73 * 74 * @return 75 * Number of mini-CQEs successfully decompressed. 76 */ 77 static inline uint16_t 78 rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq, 79 struct rte_mbuf **elts) 80 { 81 volatile struct mlx5_mini_cqe8 *mcq = (void *)&(cq + 1)->pkt_info; 82 struct rte_mbuf *t_pkt = elts[0]; /* Title packet is pre-built. */ 83 const vector unsigned char zero = (vector unsigned char){0}; 84 /* Mask to shuffle from extracted mini CQE to mbuf. */ 85 const vector unsigned char shuf_mask1 = (vector unsigned char){ 86 -1, -1, -1, -1, /* skip packet_type */ 87 7, 6, -1, -1, /* bswap16, pkt_len */ 88 7, 6, /* bswap16, data_len */ 89 -1, -1, /* skip vlan_tci */ 90 3, 2, 1, 0}; /* bswap32, rss */ 91 const vector unsigned char shuf_mask2 = (vector unsigned char){ 92 -1, -1, -1, -1, /* skip packet_type */ 93 15, 14, -1, -1, /* bswap16, pkt_len */ 94 15, 14, /* data_len, bswap16 */ 95 -1, -1, /* skip vlan_tci */ 96 11, 10, 9, 8}; /* bswap32, rss */ 97 /* Restore the compressed count. Must be 16 bits. */ 98 const uint16_t mcqe_n = t_pkt->data_len + 99 (rxq->crc_present * RTE_ETHER_CRC_LEN); 100 const vector unsigned char rearm = 101 (vector unsigned char)vec_vsx_ld(0, 102 (signed int const *)&t_pkt->rearm_data); 103 const vector unsigned char rxdf = 104 (vector unsigned char)vec_vsx_ld(0, 105 (signed int const *)&t_pkt->rx_descriptor_fields1); 106 const vector unsigned char crc_adj = 107 (vector unsigned char)(vector unsigned short){ 108 0, 0, rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 109 rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0}; 110 const vector unsigned short rxdf_sel_mask = 111 (vector unsigned short){ 112 0xffff, 0xffff, 0, 0, 0, 0xffff, 0, 0}; 113 const uint32_t flow_tag = t_pkt->hash.fdir.hi; 114 unsigned int pos; 115 unsigned int i; 116 unsigned int inv = 0; 117 118 #ifdef MLX5_PMD_SOFT_COUNTERS 119 const vector unsigned char ones = vec_splat_u8(-1); 120 uint32_t rcvd_byte = 0; 121 /* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */ 122 const vector unsigned char len_shuf_mask = (vector unsigned char){ 123 3, 2, 11, 10, 124 7, 6, 15, 14, 125 -1, -1, -1, -1, 126 -1, -1, -1, -1}; 127 #endif 128 129 /* 130 * A. load mCQEs into a 128bit register. 131 * B. store rearm data to mbuf. 132 * C. combine data from mCQEs with rx_descriptor_fields1. 133 * D. store rx_descriptor_fields1. 134 * E. store flow tag (rte_flow mark). 135 */ 136 for (pos = 0; pos < mcqe_n; ) { 137 vector unsigned char mcqe1, mcqe2; 138 vector unsigned char rxdf1, rxdf2; 139 #ifdef MLX5_PMD_SOFT_COUNTERS 140 const vector unsigned short mcqe_sel_mask = 141 (vector unsigned short){0, 0, 0xffff, 0xffff, 142 0, 0, 0xfff, 0xffff}; 143 const vector unsigned char lower_half = { 144 0, 1, 4, 5, 8, 9, 12, 13, 16, 145 17, 20, 21, 24, 25, 28, 29}; 146 const vector unsigned char upper_half = { 147 2, 3, 6, 7, 10, 11, 14, 15, 148 18, 19, 22, 23, 26, 27, 30, 31}; 149 vector unsigned short left, right; 150 vector unsigned char byte_cnt, invalid_mask; 151 vector unsigned long lshift; 152 __attribute__((altivec(vector__))) 153 __attribute__((altivec(bool__))) 154 unsigned long long shmask; 155 const vector unsigned long shmax = {64, 64}; 156 #endif 157 158 for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i) 159 if (likely(pos + i < mcqe_n)) 160 rte_prefetch0((void *)(cq + pos + i)); 161 /* A.1 load mCQEs into a 128bit register. */ 162 mcqe1 = (vector unsigned char)vec_vsx_ld(0, 163 (signed int const *)&mcq[pos % 8]); 164 mcqe2 = (vector unsigned char)vec_vsx_ld(0, 165 (signed int const *)&mcq[pos % 8 + 2]); 166 167 /* B.1 store rearm data to mbuf. */ 168 *(vector unsigned char *) 169 &elts[pos]->rearm_data = rearm; 170 *(vector unsigned char *) 171 &elts[pos + 1]->rearm_data = rearm; 172 173 /* C.1 combine data from mCQEs with rx_descriptor_fields1. */ 174 rxdf1 = vec_perm(mcqe1, zero, shuf_mask1); 175 rxdf2 = vec_perm(mcqe1, zero, shuf_mask2); 176 rxdf1 = (vector unsigned char) 177 ((vector unsigned short)rxdf1 - 178 (vector unsigned short)crc_adj); 179 rxdf2 = (vector unsigned char) 180 ((vector unsigned short)rxdf2 - 181 (vector unsigned short)crc_adj); 182 rxdf1 = (vector unsigned char) 183 vec_sel((vector unsigned short)rxdf1, 184 (vector unsigned short)rxdf, rxdf_sel_mask); 185 rxdf2 = (vector unsigned char) 186 vec_sel((vector unsigned short)rxdf2, 187 (vector unsigned short)rxdf, rxdf_sel_mask); 188 189 /* D.1 store rx_descriptor_fields1. */ 190 *(vector unsigned char *) 191 &elts[pos]->rx_descriptor_fields1 = rxdf1; 192 *(vector unsigned char *) 193 &elts[pos + 1]->rx_descriptor_fields1 = rxdf2; 194 195 /* B.1 store rearm data to mbuf. */ 196 *(vector unsigned char *) 197 &elts[pos + 2]->rearm_data = rearm; 198 *(vector unsigned char *) 199 &elts[pos + 3]->rearm_data = rearm; 200 201 /* C.1 combine data from mCQEs with rx_descriptor_fields1. */ 202 rxdf1 = vec_perm(mcqe2, zero, shuf_mask1); 203 rxdf2 = vec_perm(mcqe2, zero, shuf_mask2); 204 rxdf1 = (vector unsigned char) 205 ((vector unsigned short)rxdf1 - 206 (vector unsigned short)crc_adj); 207 rxdf2 = (vector unsigned char) 208 ((vector unsigned short)rxdf2 - 209 (vector unsigned short)crc_adj); 210 rxdf1 = (vector unsigned char) 211 vec_sel((vector unsigned short)rxdf1, 212 (vector unsigned short)rxdf, rxdf_sel_mask); 213 rxdf2 = (vector unsigned char) 214 vec_sel((vector unsigned short)rxdf2, 215 (vector unsigned short)rxdf, rxdf_sel_mask); 216 217 /* D.1 store rx_descriptor_fields1. */ 218 *(vector unsigned char *) 219 &elts[pos + 2]->rx_descriptor_fields1 = rxdf1; 220 *(vector unsigned char *) 221 &elts[pos + 3]->rx_descriptor_fields1 = rxdf2; 222 223 #ifdef MLX5_PMD_SOFT_COUNTERS 224 invalid_mask = (vector unsigned char)(vector unsigned long){ 225 (mcqe_n - pos) * sizeof(uint16_t) * 8, 0}; 226 227 lshift = 228 vec_splat((vector unsigned long)invalid_mask, 0); 229 shmask = vec_cmpgt(shmax, lshift); 230 invalid_mask = (vector unsigned char) 231 vec_sl((vector unsigned long)ones, lshift); 232 invalid_mask = (vector unsigned char) 233 vec_sel((vector unsigned long)shmask, 234 (vector unsigned long)invalid_mask, shmask); 235 236 mcqe1 = (vector unsigned char) 237 vec_sro((vector unsigned short)mcqe1, 238 (vector unsigned char){32}), 239 byte_cnt = (vector unsigned char) 240 vec_sel((vector unsigned short)mcqe1, 241 (vector unsigned short)mcqe2, mcqe_sel_mask); 242 byte_cnt = vec_perm(byte_cnt, zero, len_shuf_mask); 243 byte_cnt = (vector unsigned char) 244 vec_andc((vector unsigned long)byte_cnt, 245 (vector unsigned long)invalid_mask); 246 left = vec_perm((vector unsigned short)byte_cnt, 247 (vector unsigned short)zero, lower_half); 248 right = vec_perm((vector unsigned short)byte_cnt, 249 (vector unsigned short)zero, upper_half); 250 byte_cnt = (vector unsigned char)vec_add(left, right); 251 left = vec_perm((vector unsigned short)byte_cnt, 252 (vector unsigned short)zero, lower_half); 253 right = vec_perm((vector unsigned short)byte_cnt, 254 (vector unsigned short)zero, upper_half); 255 byte_cnt = (vector unsigned char)vec_add(left, right); 256 rcvd_byte += ((vector unsigned long)byte_cnt)[0]; 257 #endif 258 259 if (rxq->mark) { 260 /* E.1 store flow tag (rte_flow mark). */ 261 elts[pos]->hash.fdir.hi = flow_tag; 262 elts[pos + 1]->hash.fdir.hi = flow_tag; 263 elts[pos + 2]->hash.fdir.hi = flow_tag; 264 elts[pos + 3]->hash.fdir.hi = flow_tag; 265 } 266 if (rxq->dynf_meta) { 267 int32_t offs = rxq->flow_meta_offset; 268 const uint32_t meta = 269 *RTE_MBUF_DYNFIELD(t_pkt, offs, uint32_t *); 270 271 /* Check if title packet has valid metadata. */ 272 if (meta) { 273 MLX5_ASSERT(t_pkt->ol_flags & 274 rxq->flow_meta_mask); 275 *RTE_MBUF_DYNFIELD(elts[pos], offs, 276 uint32_t *) = meta; 277 *RTE_MBUF_DYNFIELD(elts[pos + 1], offs, 278 uint32_t *) = meta; 279 *RTE_MBUF_DYNFIELD(elts[pos + 2], offs, 280 uint32_t *) = meta; 281 *RTE_MBUF_DYNFIELD(elts[pos + 3], offs, 282 uint32_t *) = meta; 283 } 284 } 285 286 pos += MLX5_VPMD_DESCS_PER_LOOP; 287 /* Move to next CQE and invalidate consumed CQEs. */ 288 if (!(pos & 0x7) && pos < mcqe_n) { 289 if (pos + 8 < mcqe_n) 290 rte_prefetch0((void *)(cq + pos + 8)); 291 mcq = (void *)&(cq + pos)->pkt_info; 292 for (i = 0; i < 8; ++i) 293 cq[inv++].op_own = MLX5_CQE_INVALIDATE; 294 } 295 } 296 297 /* Invalidate the rest of CQEs. */ 298 for (; inv < mcqe_n; ++inv) 299 cq[inv].op_own = MLX5_CQE_INVALIDATE; 300 301 #ifdef MLX5_PMD_SOFT_COUNTERS 302 rxq->stats.ipackets += mcqe_n; 303 rxq->stats.ibytes += rcvd_byte; 304 #endif 305 306 rxq->cq_ci += mcqe_n; 307 return mcqe_n; 308 } 309 310 /** 311 * Calculate packet type and offload flag for mbuf and store it. 312 * 313 * @param rxq 314 * Pointer to RX queue structure. 315 * @param cqes[4] 316 * Array of four 16bytes completions extracted from the original completion 317 * descriptor. 318 * @param op_err 319 * Opcode vector having responder error status. Each field is 4B. 320 * @param pkts 321 * Pointer to array of packets to be filled. 322 */ 323 static inline void 324 rxq_cq_to_ptype_oflags_v(struct mlx5_rxq_data *rxq, 325 vector unsigned char cqes[4], vector unsigned char op_err, 326 struct rte_mbuf **pkts) 327 { 328 vector unsigned char pinfo0, pinfo1; 329 vector unsigned char pinfo, ptype; 330 vector unsigned char ol_flags = (vector unsigned char) 331 (vector unsigned int){ 332 rxq->rss_hash * PKT_RX_RSS_HASH | 333 rxq->hw_timestamp * PKT_RX_TIMESTAMP, 334 rxq->rss_hash * PKT_RX_RSS_HASH | 335 rxq->hw_timestamp * PKT_RX_TIMESTAMP, 336 rxq->rss_hash * PKT_RX_RSS_HASH | 337 rxq->hw_timestamp * PKT_RX_TIMESTAMP, 338 rxq->rss_hash * PKT_RX_RSS_HASH | 339 rxq->hw_timestamp * PKT_RX_TIMESTAMP}; 340 vector unsigned char cv_flags; 341 const vector unsigned char zero = (vector unsigned char){0}; 342 const vector unsigned char ptype_mask = 343 (vector unsigned char)(vector unsigned int){ 344 0x0000fd06, 0x0000fd06, 0x0000fd06, 0x0000fd06}; 345 const vector unsigned char ptype_ol_mask = 346 (vector unsigned char)(vector unsigned int){ 347 0x00000106, 0x00000106, 0x00000106, 0x00000106}; 348 const vector unsigned char pinfo_mask = 349 (vector unsigned char)(vector unsigned int){ 350 0x00000003, 0x00000003, 0x00000003, 0x00000003}; 351 const vector unsigned char cv_flag_sel = (vector unsigned char){ 352 0, (uint8_t)(PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED), 353 (uint8_t)(PKT_RX_IP_CKSUM_GOOD >> 1), 0, 354 (uint8_t)(PKT_RX_L4_CKSUM_GOOD >> 1), 0, 355 (uint8_t)((PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD) >> 1), 356 0, 0, 0, 0, 0, 0, 0, 0, 0}; 357 const vector unsigned char cv_mask = 358 (vector unsigned char)(vector unsigned int){ 359 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD | 360 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED, 361 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD | 362 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED, 363 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD | 364 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED, 365 PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD | 366 PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED}; 367 const vector unsigned char mbuf_init = 368 (vector unsigned char)vec_vsx_ld 369 (0, (vector unsigned char *)&rxq->mbuf_initializer); 370 const vector unsigned short rearm_sel_mask = 371 (vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0}; 372 vector unsigned char rearm0, rearm1, rearm2, rearm3; 373 uint8_t pt_idx0, pt_idx1, pt_idx2, pt_idx3; 374 375 /* Extract pkt_info field. */ 376 pinfo0 = (vector unsigned char) 377 vec_mergeh((vector unsigned int)cqes[0], 378 (vector unsigned int)cqes[1]); 379 pinfo1 = (vector unsigned char) 380 vec_mergeh((vector unsigned int)cqes[2], 381 (vector unsigned int)cqes[3]); 382 pinfo = (vector unsigned char) 383 vec_mergeh((vector unsigned long)pinfo0, 384 (vector unsigned long)pinfo1); 385 386 /* Extract hdr_type_etc field. */ 387 pinfo0 = (vector unsigned char) 388 vec_mergel((vector unsigned int)cqes[0], 389 (vector unsigned int)cqes[1]); 390 pinfo1 = (vector unsigned char) 391 vec_mergel((vector unsigned int)cqes[2], 392 (vector unsigned int)cqes[3]); 393 ptype = (vector unsigned char) 394 vec_mergeh((vector unsigned long)pinfo0, 395 (vector unsigned long)pinfo1); 396 397 if (rxq->mark) { 398 const vector unsigned char pinfo_ft_mask = 399 (vector unsigned char)(vector unsigned int){ 400 0xffffff00, 0xffffff00, 0xffffff00, 0xffffff00}; 401 const vector unsigned char fdir_flags = 402 (vector unsigned char)(vector unsigned int){ 403 PKT_RX_FDIR, PKT_RX_FDIR, 404 PKT_RX_FDIR, PKT_RX_FDIR}; 405 vector unsigned char fdir_id_flags = 406 (vector unsigned char)(vector unsigned int){ 407 PKT_RX_FDIR_ID, PKT_RX_FDIR_ID, 408 PKT_RX_FDIR_ID, PKT_RX_FDIR_ID}; 409 vector unsigned char flow_tag, invalid_mask; 410 411 flow_tag = (vector unsigned char) 412 vec_and((vector unsigned long)pinfo, 413 (vector unsigned long)pinfo_ft_mask); 414 415 /* Check if flow tag is non-zero then set PKT_RX_FDIR. */ 416 invalid_mask = (vector unsigned char) 417 vec_cmpeq((vector unsigned int)flow_tag, 418 (vector unsigned int)zero); 419 ol_flags = (vector unsigned char) 420 vec_or((vector unsigned long)ol_flags, 421 (vector unsigned long) 422 vec_andc((vector unsigned long)fdir_flags, 423 (vector unsigned long)invalid_mask)); 424 425 /* Mask out invalid entries. */ 426 fdir_id_flags = (vector unsigned char) 427 vec_andc((vector unsigned long)fdir_id_flags, 428 (vector unsigned long)invalid_mask); 429 430 /* Check if flow tag MLX5_FLOW_MARK_DEFAULT. */ 431 ol_flags = (vector unsigned char) 432 vec_or((vector unsigned long)ol_flags, 433 (vector unsigned long) 434 vec_andc((vector unsigned long)fdir_id_flags, 435 (vector unsigned long) 436 vec_cmpeq((vector unsigned int)flow_tag, 437 (vector unsigned int)pinfo_ft_mask))); 438 } 439 /* 440 * Merge the two fields to generate the following: 441 * bit[1] = l3_ok 442 * bit[2] = l4_ok 443 * bit[8] = cv 444 * bit[11:10] = l3_hdr_type 445 * bit[14:12] = l4_hdr_type 446 * bit[15] = ip_frag 447 * bit[16] = tunneled 448 * bit[17] = outer_l3_type 449 */ 450 ptype = (vector unsigned char) 451 vec_and((vector unsigned long)ptype, 452 (vector unsigned long)ptype_mask); 453 pinfo = (vector unsigned char) 454 vec_and((vector unsigned long)pinfo, 455 (vector unsigned long)pinfo_mask); 456 pinfo = (vector unsigned char) 457 vec_sl((vector unsigned int)pinfo, 458 (vector unsigned int){16, 16, 16, 16}); 459 460 /* Make pinfo has merged fields for ol_flags calculation. */ 461 pinfo = (vector unsigned char) 462 vec_or((vector unsigned long)ptype, 463 (vector unsigned long)pinfo); 464 ptype = (vector unsigned char) 465 vec_sr((vector unsigned int)pinfo, 466 (vector unsigned int){10, 10, 10, 10}); 467 ptype = (vector unsigned char) 468 vec_packs((vector unsigned int)ptype, 469 (vector unsigned int)zero); 470 471 /* Errored packets will have RTE_PTYPE_ALL_MASK. */ 472 op_err = (vector unsigned char) 473 vec_sr((vector unsigned short)op_err, 474 (vector unsigned short){8, 8, 8, 8, 8, 8, 8, 8}); 475 ptype = (vector unsigned char) 476 vec_or((vector unsigned long)ptype, 477 (vector unsigned long)op_err); 478 479 pt_idx0 = (uint8_t)((vector unsigned char)ptype)[0]; 480 pt_idx1 = (uint8_t)((vector unsigned char)ptype)[2]; 481 pt_idx2 = (uint8_t)((vector unsigned char)ptype)[4]; 482 pt_idx3 = (uint8_t)((vector unsigned char)ptype)[6]; 483 484 pkts[0]->packet_type = mlx5_ptype_table[pt_idx0] | 485 !!(pt_idx0 & (1 << 6)) * rxq->tunnel; 486 pkts[1]->packet_type = mlx5_ptype_table[pt_idx1] | 487 !!(pt_idx1 & (1 << 6)) * rxq->tunnel; 488 pkts[2]->packet_type = mlx5_ptype_table[pt_idx2] | 489 !!(pt_idx2 & (1 << 6)) * rxq->tunnel; 490 pkts[3]->packet_type = mlx5_ptype_table[pt_idx3] | 491 !!(pt_idx3 & (1 << 6)) * rxq->tunnel; 492 493 /* Fill flags for checksum and VLAN. */ 494 pinfo = (vector unsigned char) 495 vec_and((vector unsigned long)pinfo, 496 (vector unsigned long)ptype_ol_mask); 497 pinfo = vec_perm(cv_flag_sel, zero, pinfo); 498 499 /* Locate checksum flags at byte[2:1] and merge with VLAN flags. */ 500 cv_flags = (vector unsigned char) 501 vec_sl((vector unsigned int)pinfo, 502 (vector unsigned int){9, 9, 9, 9}); 503 cv_flags = (vector unsigned char) 504 vec_or((vector unsigned long)pinfo, 505 (vector unsigned long)cv_flags); 506 507 /* Move back flags to start from byte[0]. */ 508 cv_flags = (vector unsigned char) 509 vec_sr((vector unsigned int)cv_flags, 510 (vector unsigned int){8, 8, 8, 8}); 511 512 /* Mask out garbage bits. */ 513 cv_flags = (vector unsigned char) 514 vec_and((vector unsigned long)cv_flags, 515 (vector unsigned long)cv_mask); 516 517 /* Merge to ol_flags. */ 518 ol_flags = (vector unsigned char) 519 vec_or((vector unsigned long)ol_flags, 520 (vector unsigned long)cv_flags); 521 522 /* Merge mbuf_init and ol_flags. */ 523 rearm0 = (vector unsigned char) 524 vec_sel((vector unsigned short)mbuf_init, 525 (vector unsigned short) 526 vec_slo((vector unsigned short)ol_flags, 527 (vector unsigned char){64}), rearm_sel_mask); 528 rearm1 = (vector unsigned char) 529 vec_sel((vector unsigned short)mbuf_init, 530 (vector unsigned short) 531 vec_slo((vector unsigned short)ol_flags, 532 (vector unsigned char){32}), rearm_sel_mask); 533 rearm2 = (vector unsigned char) 534 vec_sel((vector unsigned short)mbuf_init, 535 (vector unsigned short)ol_flags, rearm_sel_mask); 536 rearm3 = (vector unsigned char) 537 vec_sel((vector unsigned short)mbuf_init, 538 (vector unsigned short) 539 vec_sro((vector unsigned short)ol_flags, 540 (vector unsigned char){32}), rearm_sel_mask); 541 542 /* Write 8B rearm_data and 8B ol_flags. */ 543 vec_vsx_st(rearm0, 0, 544 (vector unsigned char *)&pkts[0]->rearm_data); 545 vec_vsx_st(rearm1, 0, 546 (vector unsigned char *)&pkts[1]->rearm_data); 547 vec_vsx_st(rearm2, 0, 548 (vector unsigned char *)&pkts[2]->rearm_data); 549 vec_vsx_st(rearm3, 0, 550 (vector unsigned char *)&pkts[3]->rearm_data); 551 } 552 553 554 /** 555 * Receive burst of packets. An errored completion also consumes a mbuf, but the 556 * packet_type is set to be RTE_PTYPE_ALL_MASK. Marked mbufs should be freed 557 * before returning to application. 558 * 559 * @param rxq 560 * Pointer to RX queue structure. 561 * @param[out] pkts 562 * Array to store received packets. 563 * @param pkts_n 564 * Maximum number of packets in array. 565 * @param[out] err 566 * Pointer to a flag. Set non-zero value if pkts array has at least one error 567 * packet to handle. 568 * @param[out] no_cq 569 * Pointer to a boolean. Set true if no new CQE seen. 570 * 571 * @return 572 * Number of packets received including errors (<= pkts_n). 573 */ 574 static inline uint16_t 575 rxq_burst_v(struct mlx5_rxq_data *rxq, struct rte_mbuf **pkts, uint16_t pkts_n, 576 uint64_t *err, bool *no_cq) 577 { 578 const uint16_t q_n = 1 << rxq->cqe_n; 579 const uint16_t q_mask = q_n - 1; 580 volatile struct mlx5_cqe *cq; 581 struct rte_mbuf **elts; 582 unsigned int pos; 583 uint64_t n; 584 uint16_t repl_n; 585 uint64_t comp_idx = MLX5_VPMD_DESCS_PER_LOOP; 586 uint16_t nocmp_n = 0; 587 uint16_t rcvd_pkt = 0; 588 unsigned int cq_idx = rxq->cq_ci & q_mask; 589 unsigned int elts_idx; 590 unsigned int ownership = !!(rxq->cq_ci & (q_mask + 1)); 591 const vector unsigned char zero = (vector unsigned char){0}; 592 const vector unsigned char ones = vec_splat_u8(-1); 593 const vector unsigned char owner_check = 594 (vector unsigned char)(vector unsigned long){ 595 0x0100000001000000LL, 0x0100000001000000LL}; 596 const vector unsigned char opcode_check = 597 (vector unsigned char)(vector unsigned long){ 598 0xf0000000f0000000LL, 0xf0000000f0000000LL}; 599 const vector unsigned char format_check = 600 (vector unsigned char)(vector unsigned long){ 601 0x0c0000000c000000LL, 0x0c0000000c000000LL}; 602 const vector unsigned char resp_err_check = 603 (vector unsigned char)(vector unsigned long){ 604 0xe0000000e0000000LL, 0xe0000000e0000000LL}; 605 #ifdef MLX5_PMD_SOFT_COUNTERS 606 uint32_t rcvd_byte = 0; 607 /* Mask to shuffle byte_cnt to add up stats. Do bswap16 for all. */ 608 const vector unsigned char len_shuf_mask = (vector unsigned char){ 609 1, 0, 5, 4, 610 9, 8, 13, 12, 611 -1, -1, -1, -1, 612 -1, -1, -1, -1}; 613 #endif 614 /* Mask to shuffle from extracted CQE to mbuf. */ 615 const vector unsigned char shuf_mask = (vector unsigned char){ 616 5, 4, /* bswap16, pkt_len */ 617 -1, -1, /* zero out 2nd half of pkt_len */ 618 5, 4, /* bswap16, data_len */ 619 11, 10, /* bswap16, vlan+tci */ 620 15, 14, 13, 12, /* bswap32, rss */ 621 1, 2, 3, -1}; /* fdir.hi */ 622 /* Mask to blend from the last Qword to the first DQword. */ 623 /* Mask to blend from the last Qword to the first DQword. */ 624 const vector unsigned char blend_mask = (vector unsigned char){ 625 -1, 0, 0, 0, 626 0, 0, 0, 0, 627 -1, -1, -1, -1, 628 -1, -1, -1, -1}; 629 const vector unsigned char crc_adj = 630 (vector unsigned char)(vector unsigned short){ 631 rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 632 rxq->crc_present * RTE_ETHER_CRC_LEN, 0, 0, 0, 0, 0}; 633 const vector unsigned char flow_mark_adj = 634 (vector unsigned char)(vector unsigned int){ 635 0, 0, 0, rxq->mark * (-1)}; 636 const vector unsigned short cqe_sel_mask1 = 637 (vector unsigned short){0, 0, 0, 0, 0xffff, 0xffff, 0, 0}; 638 const vector unsigned short cqe_sel_mask2 = 639 (vector unsigned short){0, 0, 0xffff, 0, 0, 0, 0, 0}; 640 641 MLX5_ASSERT(rxq->sges_n == 0); 642 MLX5_ASSERT(rxq->cqe_n == rxq->elts_n); 643 cq = &(*rxq->cqes)[cq_idx]; 644 rte_prefetch0(cq); 645 rte_prefetch0(cq + 1); 646 rte_prefetch0(cq + 2); 647 rte_prefetch0(cq + 3); 648 pkts_n = RTE_MIN(pkts_n, MLX5_VPMD_RX_MAX_BURST); 649 650 repl_n = q_n - (rxq->rq_ci - rxq->rq_pi); 651 if (repl_n >= rxq->rq_repl_thresh) 652 mlx5_rx_replenish_bulk_mbuf(rxq, repl_n); 653 /* See if there're unreturned mbufs from compressed CQE. */ 654 rcvd_pkt = rxq->decompressed; 655 if (rcvd_pkt > 0) { 656 rcvd_pkt = RTE_MIN(rcvd_pkt, pkts_n); 657 rxq_copy_mbuf_v(rxq, pkts, rcvd_pkt); 658 rxq->rq_pi += rcvd_pkt; 659 rxq->decompressed -= rcvd_pkt; 660 pkts += rcvd_pkt; 661 } 662 elts_idx = rxq->rq_pi & q_mask; 663 elts = &(*rxq->elts)[elts_idx]; 664 /* Not to overflow pkts array. */ 665 pkts_n = RTE_ALIGN_FLOOR(pkts_n - rcvd_pkt, MLX5_VPMD_DESCS_PER_LOOP); 666 /* Not to cross queue end. */ 667 pkts_n = RTE_MIN(pkts_n, q_n - elts_idx); 668 pkts_n = RTE_MIN(pkts_n, q_n - cq_idx); 669 if (!pkts_n) { 670 *no_cq = !rcvd_pkt; 671 return rcvd_pkt; 672 } 673 /* At this point, there shouldn't be any remaining packets. */ 674 MLX5_ASSERT(rxq->decompressed == 0); 675 676 /* 677 * A. load first Qword (8bytes) in one loop. 678 * B. copy 4 mbuf pointers from elts ring to returing pkts. 679 * C. load remaining CQE data and extract necessary fields. 680 * Final 16bytes cqes[] extracted from original 64bytes CQE has the 681 * following structure: 682 * struct { 683 * uint8_t pkt_info; 684 * uint8_t flow_tag[3]; 685 * uint16_t byte_cnt; 686 * uint8_t rsvd4; 687 * uint8_t op_own; 688 * uint16_t hdr_type_etc; 689 * uint16_t vlan_info; 690 * uint32_t rx_has_res; 691 * } c; 692 * D. fill in mbuf. 693 * E. get valid CQEs. 694 * F. find compressed CQE. 695 */ 696 for (pos = 0; 697 pos < pkts_n; 698 pos += MLX5_VPMD_DESCS_PER_LOOP) { 699 vector unsigned char cqes[MLX5_VPMD_DESCS_PER_LOOP]; 700 vector unsigned char cqe_tmp1, cqe_tmp2; 701 vector unsigned char pkt_mb0, pkt_mb1, pkt_mb2, pkt_mb3; 702 vector unsigned char op_own, op_own_tmp1, op_own_tmp2; 703 vector unsigned char opcode, owner_mask, invalid_mask; 704 vector unsigned char comp_mask; 705 vector unsigned char mask; 706 #ifdef MLX5_PMD_SOFT_COUNTERS 707 const vector unsigned char lower_half = { 708 0, 1, 4, 5, 8, 9, 12, 13, 709 16, 17, 20, 21, 24, 25, 28, 29}; 710 const vector unsigned char upper_half = { 711 2, 3, 6, 7, 10, 11, 14, 15, 712 18, 19, 22, 23, 26, 27, 30, 31}; 713 const vector unsigned long shmax = {64, 64}; 714 vector unsigned char byte_cnt; 715 vector unsigned short left, right; 716 vector unsigned long lshift; 717 vector __attribute__((altivec(bool__))) 718 unsigned long shmask; 719 #endif 720 vector unsigned char mbp1, mbp2; 721 vector unsigned char p = 722 (vector unsigned char)(vector unsigned short){ 723 0, 1, 2, 3, 0, 0, 0, 0}; 724 unsigned int p1, p2, p3; 725 726 /* Prefetch next 4 CQEs. */ 727 if (pkts_n - pos >= 2 * MLX5_VPMD_DESCS_PER_LOOP) { 728 rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP]); 729 rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 1]); 730 rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 2]); 731 rte_prefetch0(&cq[pos + MLX5_VPMD_DESCS_PER_LOOP + 3]); 732 } 733 734 /* A.0 do not cross the end of CQ. */ 735 mask = (vector unsigned char)(vector unsigned long){ 736 (pkts_n - pos) * sizeof(uint16_t) * 8, 0}; 737 738 { 739 vector unsigned long lshift; 740 vector __attribute__((altivec(bool__))) 741 unsigned long shmask; 742 const vector unsigned long shmax = {64, 64}; 743 744 lshift = vec_splat((vector unsigned long)mask, 0); 745 shmask = vec_cmpgt(shmax, lshift); 746 mask = (vector unsigned char) 747 vec_sl((vector unsigned long)ones, lshift); 748 mask = (vector unsigned char) 749 vec_sel((vector unsigned long)shmask, 750 (vector unsigned long)mask, shmask); 751 } 752 753 p = (vector unsigned char) 754 vec_andc((vector unsigned long)p, 755 (vector unsigned long)mask); 756 757 /* A.1 load cqes. */ 758 p3 = (unsigned int)((vector unsigned short)p)[3]; 759 cqes[3] = (vector unsigned char)(vector unsigned long){ 760 *(__rte_aligned(8) unsigned long *) 761 &cq[pos + p3].sop_drop_qpn, 0LL}; 762 rte_compiler_barrier(); 763 764 p2 = (unsigned int)((vector unsigned short)p)[2]; 765 cqes[2] = (vector unsigned char)(vector unsigned long){ 766 *(__rte_aligned(8) unsigned long *) 767 &cq[pos + p2].sop_drop_qpn, 0LL}; 768 rte_compiler_barrier(); 769 770 /* B.1 load mbuf pointers. */ 771 mbp1 = (vector unsigned char)vec_vsx_ld(0, 772 (signed int const *)&elts[pos]); 773 mbp2 = (vector unsigned char)vec_vsx_ld(0, 774 (signed int const *)&elts[pos + 2]); 775 776 /* A.1 load a block having op_own. */ 777 p1 = (unsigned int)((vector unsigned short)p)[1]; 778 cqes[1] = (vector unsigned char)(vector unsigned long){ 779 *(__rte_aligned(8) unsigned long *) 780 &cq[pos + p1].sop_drop_qpn, 0LL}; 781 rte_compiler_barrier(); 782 783 cqes[0] = (vector unsigned char)(vector unsigned long){ 784 *(__rte_aligned(8) unsigned long *) 785 &cq[pos].sop_drop_qpn, 0LL}; 786 rte_compiler_barrier(); 787 788 /* B.2 copy mbuf pointers. */ 789 *(vector unsigned char *)&pkts[pos] = mbp1; 790 *(vector unsigned char *)&pkts[pos + 2] = mbp2; 791 rte_cio_rmb(); 792 793 /* C.1 load remaining CQE data and extract necessary fields. */ 794 cqe_tmp2 = *(vector unsigned char *) 795 &cq[pos + p3].pkt_info; 796 cqe_tmp1 = *(vector unsigned char *) 797 &cq[pos + p2].pkt_info; 798 cqes[3] = vec_sel(cqes[3], cqe_tmp2, blend_mask); 799 cqes[2] = vec_sel(cqes[2], cqe_tmp1, blend_mask); 800 cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0, 801 (signed int const *)&cq[pos + p3].csum); 802 cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0, 803 (signed int const *)&cq[pos + p2].csum); 804 cqes[3] = (vector unsigned char) 805 vec_sel((vector unsigned short)cqes[3], 806 (vector unsigned short)cqe_tmp2, cqe_sel_mask1); 807 cqes[2] = (vector unsigned char) 808 vec_sel((vector unsigned short)cqes[2], 809 (vector unsigned short)cqe_tmp1, cqe_sel_mask1); 810 cqe_tmp2 = (vector unsigned char)(vector unsigned long){ 811 *(__rte_aligned(8) unsigned long *) 812 &cq[pos + p3].rsvd3[9], 0LL}; 813 cqe_tmp1 = (vector unsigned char)(vector unsigned long){ 814 *(__rte_aligned(8) unsigned long *) 815 &cq[pos + p2].rsvd3[9], 0LL}; 816 cqes[3] = (vector unsigned char) 817 vec_sel((vector unsigned short)cqes[3], 818 (vector unsigned short)cqe_tmp2, 819 (vector unsigned short)cqe_sel_mask2); 820 cqes[2] = (vector unsigned char) 821 vec_sel((vector unsigned short)cqes[2], 822 (vector unsigned short)cqe_tmp1, 823 (vector unsigned short)cqe_sel_mask2); 824 825 /* C.2 generate final structure for mbuf with swapping bytes. */ 826 pkt_mb3 = vec_perm(cqes[3], zero, shuf_mask); 827 pkt_mb2 = vec_perm(cqes[2], zero, shuf_mask); 828 829 /* C.3 adjust CRC length. */ 830 pkt_mb3 = (vector unsigned char) 831 ((vector unsigned short)pkt_mb3 - 832 (vector unsigned short)crc_adj); 833 pkt_mb2 = (vector unsigned char) 834 ((vector unsigned short)pkt_mb2 - 835 (vector unsigned short)crc_adj); 836 837 /* C.4 adjust flow mark. */ 838 pkt_mb3 = (vector unsigned char) 839 ((vector unsigned int)pkt_mb3 + 840 (vector unsigned int)flow_mark_adj); 841 pkt_mb2 = (vector unsigned char) 842 ((vector unsigned int)pkt_mb2 + 843 (vector unsigned int)flow_mark_adj); 844 845 /* D.1 fill in mbuf - rx_descriptor_fields1. */ 846 *(vector unsigned char *) 847 &pkts[pos + 3]->pkt_len = pkt_mb3; 848 *(vector unsigned char *) 849 &pkts[pos + 2]->pkt_len = pkt_mb2; 850 851 /* E.1 extract op_own field. */ 852 op_own_tmp2 = (vector unsigned char) 853 vec_mergeh((vector unsigned int)cqes[2], 854 (vector unsigned int)cqes[3]); 855 856 /* C.1 load remaining CQE data and extract necessary fields. */ 857 cqe_tmp2 = *(vector unsigned char *) 858 &cq[pos + p1].pkt_info; 859 cqe_tmp1 = *(vector unsigned char *) 860 &cq[pos].pkt_info; 861 cqes[1] = vec_sel(cqes[1], cqe_tmp2, blend_mask); 862 cqes[0] = vec_sel(cqes[0], cqe_tmp2, blend_mask); 863 cqe_tmp2 = (vector unsigned char)vec_vsx_ld(0, 864 (signed int const *)&cq[pos + p1].csum); 865 cqe_tmp1 = (vector unsigned char)vec_vsx_ld(0, 866 (signed int const *)&cq[pos].csum); 867 cqes[1] = (vector unsigned char) 868 vec_sel((vector unsigned short)cqes[1], 869 (vector unsigned short)cqe_tmp2, cqe_sel_mask1); 870 cqes[0] = (vector unsigned char) 871 vec_sel((vector unsigned short)cqes[0], 872 (vector unsigned short)cqe_tmp1, cqe_sel_mask1); 873 cqe_tmp2 = (vector unsigned char)(vector unsigned long){ 874 *(__rte_aligned(8) unsigned long *) 875 &cq[pos + p1].rsvd3[9], 0LL}; 876 cqe_tmp1 = (vector unsigned char)(vector unsigned long){ 877 *(__rte_aligned(8) unsigned long *) 878 &cq[pos].rsvd3[9], 0LL}; 879 cqes[1] = (vector unsigned char) 880 vec_sel((vector unsigned short)cqes[1], 881 (vector unsigned short)cqe_tmp2, cqe_sel_mask2); 882 cqes[0] = (vector unsigned char) 883 vec_sel((vector unsigned short)cqes[0], 884 (vector unsigned short)cqe_tmp1, cqe_sel_mask2); 885 886 /* C.2 generate final structure for mbuf with swapping bytes. */ 887 pkt_mb1 = vec_perm(cqes[1], zero, shuf_mask); 888 pkt_mb0 = vec_perm(cqes[0], zero, shuf_mask); 889 890 /* C.3 adjust CRC length. */ 891 pkt_mb1 = (vector unsigned char) 892 ((vector unsigned short)pkt_mb1 - 893 (vector unsigned short)crc_adj); 894 pkt_mb0 = (vector unsigned char) 895 ((vector unsigned short)pkt_mb0 - 896 (vector unsigned short)crc_adj); 897 898 /* C.4 adjust flow mark. */ 899 pkt_mb1 = (vector unsigned char) 900 ((vector unsigned int)pkt_mb1 + 901 (vector unsigned int)flow_mark_adj); 902 pkt_mb0 = (vector unsigned char) 903 ((vector unsigned int)pkt_mb0 + 904 (vector unsigned int)flow_mark_adj); 905 906 /* E.1 extract op_own byte. */ 907 op_own_tmp1 = (vector unsigned char) 908 vec_mergeh((vector unsigned int)cqes[0], 909 (vector unsigned int)cqes[1]); 910 op_own = (vector unsigned char) 911 vec_mergel((vector unsigned long)op_own_tmp1, 912 (vector unsigned long)op_own_tmp2); 913 914 /* D.1 fill in mbuf - rx_descriptor_fields1. */ 915 *(vector unsigned char *) 916 &pkts[pos + 1]->pkt_len = pkt_mb1; 917 *(vector unsigned char *) 918 &pkts[pos]->pkt_len = pkt_mb0; 919 920 /* E.2 flip owner bit to mark CQEs from last round. */ 921 owner_mask = (vector unsigned char) 922 vec_and((vector unsigned long)op_own, 923 (vector unsigned long)owner_check); 924 if (ownership) 925 owner_mask = (vector unsigned char) 926 vec_xor((vector unsigned long)owner_mask, 927 (vector unsigned long)owner_check); 928 owner_mask = (vector unsigned char) 929 vec_cmpeq((vector unsigned int)owner_mask, 930 (vector unsigned int)owner_check); 931 owner_mask = (vector unsigned char) 932 vec_packs((vector unsigned int)owner_mask, 933 (vector unsigned int)zero); 934 935 /* E.3 get mask for invalidated CQEs. */ 936 opcode = (vector unsigned char) 937 vec_and((vector unsigned long)op_own, 938 (vector unsigned long)opcode_check); 939 invalid_mask = (vector unsigned char) 940 vec_cmpeq((vector unsigned int)opcode_check, 941 (vector unsigned int)opcode); 942 invalid_mask = (vector unsigned char) 943 vec_packs((vector unsigned int)invalid_mask, 944 (vector unsigned int)zero); 945 946 /* E.4 mask out beyond boundary. */ 947 invalid_mask = (vector unsigned char) 948 vec_or((vector unsigned long)invalid_mask, 949 (vector unsigned long)mask); 950 951 /* E.5 merge invalid_mask with invalid owner. */ 952 invalid_mask = (vector unsigned char) 953 vec_or((vector unsigned long)invalid_mask, 954 (vector unsigned long)owner_mask); 955 956 /* F.1 find compressed CQE format. */ 957 comp_mask = (vector unsigned char) 958 vec_and((vector unsigned long)op_own, 959 (vector unsigned long)format_check); 960 comp_mask = (vector unsigned char) 961 vec_cmpeq((vector unsigned int)comp_mask, 962 (vector unsigned int)format_check); 963 comp_mask = (vector unsigned char) 964 vec_packs((vector unsigned int)comp_mask, 965 (vector unsigned int)zero); 966 967 /* F.2 mask out invalid entries. */ 968 comp_mask = (vector unsigned char) 969 vec_andc((vector unsigned long)comp_mask, 970 (vector unsigned long)invalid_mask); 971 comp_idx = ((vector unsigned long)comp_mask)[0]; 972 973 /* F.3 get the first compressed CQE. */ 974 comp_idx = comp_idx ? __builtin_ctzll(comp_idx) / 975 (sizeof(uint16_t) * 8) : MLX5_VPMD_DESCS_PER_LOOP; 976 977 /* E.6 mask out entries after the compressed CQE. */ 978 mask = (vector unsigned char)(vector unsigned long){ 979 (comp_idx * sizeof(uint16_t) * 8), 0}; 980 lshift = vec_splat((vector unsigned long)mask, 0); 981 shmask = vec_cmpgt(shmax, lshift); 982 mask = (vector unsigned char) 983 vec_sl((vector unsigned long)ones, lshift); 984 mask = (vector unsigned char) 985 vec_sel((vector unsigned long)shmask, 986 (vector unsigned long)mask, shmask); 987 invalid_mask = (vector unsigned char) 988 vec_or((vector unsigned long)invalid_mask, 989 (vector unsigned long)mask); 990 991 /* E.7 count non-compressed valid CQEs. */ 992 n = ((vector unsigned long)invalid_mask)[0]; 993 n = n ? __builtin_ctzll(n) / (sizeof(uint16_t) * 8) : 994 MLX5_VPMD_DESCS_PER_LOOP; 995 nocmp_n += n; 996 997 /* D.2 get the final invalid mask. */ 998 mask = (vector unsigned char)(vector unsigned long){ 999 (n * sizeof(uint16_t) * 8), 0}; 1000 lshift = vec_splat((vector unsigned long)mask, 0); 1001 shmask = vec_cmpgt(shmax, lshift); 1002 mask = (vector unsigned char) 1003 vec_sl((vector unsigned long)ones, lshift); 1004 mask = (vector unsigned char) 1005 vec_sel((vector unsigned long)shmask, 1006 (vector unsigned long)mask, shmask); 1007 invalid_mask = (vector unsigned char) 1008 vec_or((vector unsigned long)invalid_mask, 1009 (vector unsigned long)mask); 1010 1011 /* D.3 check error in opcode. */ 1012 opcode = (vector unsigned char) 1013 vec_cmpeq((vector unsigned int)resp_err_check, 1014 (vector unsigned int)opcode); 1015 opcode = (vector unsigned char) 1016 vec_packs((vector unsigned int)opcode, 1017 (vector unsigned int)zero); 1018 opcode = (vector unsigned char) 1019 vec_andc((vector unsigned long)opcode, 1020 (vector unsigned long)invalid_mask); 1021 1022 /* D.4 mark if any error is set */ 1023 *err |= ((vector unsigned long)opcode)[0]; 1024 1025 /* D.5 fill in mbuf - rearm_data and packet_type. */ 1026 rxq_cq_to_ptype_oflags_v(rxq, cqes, opcode, &pkts[pos]); 1027 if (rxq->hw_timestamp) { 1028 if (rxq->rt_timestamp) { 1029 struct mlx5_dev_ctx_shared *sh = rxq->sh; 1030 uint64_t ts; 1031 1032 ts = rte_be_to_cpu_64(cq[pos].timestamp); 1033 pkts[pos]->timestamp = 1034 mlx5_txpp_convert_rx_ts(sh, ts); 1035 ts = rte_be_to_cpu_64(cq[pos + p1].timestamp); 1036 pkts[pos + 1]->timestamp = 1037 mlx5_txpp_convert_rx_ts(sh, ts); 1038 ts = rte_be_to_cpu_64(cq[pos + p2].timestamp); 1039 pkts[pos + 2]->timestamp = 1040 mlx5_txpp_convert_rx_ts(sh, ts); 1041 ts = rte_be_to_cpu_64(cq[pos + p3].timestamp); 1042 pkts[pos + 3]->timestamp = 1043 mlx5_txpp_convert_rx_ts(sh, ts); 1044 } else { 1045 pkts[pos]->timestamp = rte_be_to_cpu_64 1046 (cq[pos].timestamp); 1047 pkts[pos + 1]->timestamp = rte_be_to_cpu_64 1048 (cq[pos + p1].timestamp); 1049 pkts[pos + 2]->timestamp = rte_be_to_cpu_64 1050 (cq[pos + p2].timestamp); 1051 pkts[pos + 3]->timestamp = rte_be_to_cpu_64 1052 (cq[pos + p3].timestamp); 1053 } 1054 } 1055 if (rxq->dynf_meta) { 1056 uint64_t flag = rxq->flow_meta_mask; 1057 int32_t offs = rxq->flow_meta_offset; 1058 uint32_t metadata; 1059 1060 /* This code is subject for futher optimization. */ 1061 metadata = cq[pos].flow_table_metadata; 1062 *RTE_MBUF_DYNFIELD(pkts[pos], offs, uint32_t *) = 1063 metadata; 1064 pkts[pos]->ol_flags |= metadata ? flag : 0ULL; 1065 metadata = cq[pos + 1].flow_table_metadata; 1066 *RTE_MBUF_DYNFIELD(pkts[pos + 1], offs, uint32_t *) = 1067 metadata; 1068 pkts[pos + 1]->ol_flags |= metadata ? flag : 0ULL; 1069 metadata = cq[pos + 2].flow_table_metadata; 1070 *RTE_MBUF_DYNFIELD(pkts[pos + 2], offs, uint32_t *) = 1071 metadata; 1072 pkts[pos + 2]->ol_flags |= metadata ? flag : 0ULL; 1073 metadata = cq[pos + 3].flow_table_metadata; 1074 *RTE_MBUF_DYNFIELD(pkts[pos + 3], offs, uint32_t *) = 1075 metadata; 1076 pkts[pos + 3]->ol_flags |= metadata ? flag : 0ULL; 1077 } 1078 #ifdef MLX5_PMD_SOFT_COUNTERS 1079 /* Add up received bytes count. */ 1080 byte_cnt = vec_perm(op_own, zero, len_shuf_mask); 1081 byte_cnt = (vector unsigned char) 1082 vec_andc((vector unsigned long)byte_cnt, 1083 (vector unsigned long)invalid_mask); 1084 left = vec_perm((vector unsigned short)byte_cnt, 1085 (vector unsigned short)zero, lower_half); 1086 right = vec_perm((vector unsigned short)byte_cnt, 1087 (vector unsigned short)zero, upper_half); 1088 byte_cnt = (vector unsigned char)vec_add(left, right); 1089 left = vec_perm((vector unsigned short)byte_cnt, 1090 (vector unsigned short)zero, lower_half); 1091 right = vec_perm((vector unsigned short)byte_cnt, 1092 (vector unsigned short)zero, upper_half); 1093 byte_cnt = (vector unsigned char)vec_add(left, right); 1094 rcvd_byte += ((vector unsigned long)byte_cnt)[0]; 1095 #endif 1096 1097 /* 1098 * Break the loop unless more valid CQE is expected, or if 1099 * there's a compressed CQE. 1100 */ 1101 if (n != MLX5_VPMD_DESCS_PER_LOOP) 1102 break; 1103 } 1104 /* If no new CQE seen, return without updating cq_db. */ 1105 if (unlikely(!nocmp_n && comp_idx == MLX5_VPMD_DESCS_PER_LOOP)) { 1106 *no_cq = true; 1107 return rcvd_pkt; 1108 } 1109 /* Update the consumer indexes for non-compressed CQEs. */ 1110 MLX5_ASSERT(nocmp_n <= pkts_n); 1111 rxq->cq_ci += nocmp_n; 1112 rxq->rq_pi += nocmp_n; 1113 rcvd_pkt += nocmp_n; 1114 #ifdef MLX5_PMD_SOFT_COUNTERS 1115 rxq->stats.ipackets += nocmp_n; 1116 rxq->stats.ibytes += rcvd_byte; 1117 #endif 1118 /* Decompress the last CQE if compressed. */ 1119 if (comp_idx < MLX5_VPMD_DESCS_PER_LOOP && comp_idx == n) { 1120 MLX5_ASSERT(comp_idx == (nocmp_n % MLX5_VPMD_DESCS_PER_LOOP)); 1121 rxq->decompressed = 1122 rxq_cq_decompress_v(rxq, &cq[nocmp_n], &elts[nocmp_n]); 1123 /* Return more packets if needed. */ 1124 if (nocmp_n < pkts_n) { 1125 uint16_t n = rxq->decompressed; 1126 1127 n = RTE_MIN(n, pkts_n - nocmp_n); 1128 rxq_copy_mbuf_v(rxq, &pkts[nocmp_n], n); 1129 rxq->rq_pi += n; 1130 rcvd_pkt += n; 1131 rxq->decompressed -= n; 1132 } 1133 } 1134 rte_compiler_barrier(); 1135 *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci); 1136 *no_cq = !rcvd_pkt; 1137 return rcvd_pkt; 1138 } 1139 1140 #endif /* RTE_PMD_MLX5_RXTX_VEC_ALTIVEC_H_ */ 1141