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