1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2018 Intel Corporation 3 */ 4 #include <isa-l.h> 5 6 #include <rte_bus_vdev.h> 7 #include <rte_common.h> 8 #include <rte_malloc.h> 9 #include <rte_mbuf.h> 10 #include <rte_compressdev_pmd.h> 11 12 #include "isal_compress_pmd_private.h" 13 14 #define RTE_COMP_ISAL_WINDOW_SIZE 15 15 #define RTE_COMP_ISAL_LEVEL_ZERO 0 /* ISA-L Level 0 used for fixed Huffman */ 16 #define RTE_COMP_ISAL_LEVEL_ONE 1 17 #define RTE_COMP_ISAL_LEVEL_TWO 2 18 #define RTE_COMP_ISAL_LEVEL_THREE 3 /* Optimised for AVX512 & AVX2 only */ 19 #define CHKSUM_SZ_CRC 8 20 #define CHKSUM_SZ_ADLER 4 21 22 #define STRINGIFY(s) #s 23 #define ISAL_TOSTRING(maj, min, patch) \ 24 STRINGIFY(maj)"."STRINGIFY(min)"."STRINGIFY(patch) 25 #define ISAL_VERSION_STRING \ 26 ISAL_TOSTRING(ISAL_MAJOR_VERSION, ISAL_MINOR_VERSION, ISAL_PATCH_VERSION) 27 28 int isal_logtype_driver; 29 30 /* Verify and set private xform parameters */ 31 int 32 isal_comp_set_priv_xform_parameters(struct isal_priv_xform *priv_xform, 33 const struct rte_comp_xform *xform) 34 { 35 if (xform == NULL) 36 return -EINVAL; 37 38 /* Set compression private xform variables */ 39 if (xform->type == RTE_COMP_COMPRESS) { 40 /* Set private xform type - COMPRESS/DECOMPRESS */ 41 priv_xform->type = RTE_COMP_COMPRESS; 42 43 /* Set private xform algorithm */ 44 if (xform->compress.algo != RTE_COMP_ALGO_DEFLATE) { 45 if (xform->compress.algo == RTE_COMP_ALGO_NULL) { 46 ISAL_PMD_LOG(ERR, "By-pass not supported\n"); 47 return -ENOTSUP; 48 } 49 ISAL_PMD_LOG(ERR, "Algorithm not supported\n"); 50 return -ENOTSUP; 51 } 52 priv_xform->compress.algo = RTE_COMP_ALGO_DEFLATE; 53 54 /* Set private xform window size, 32K supported */ 55 if (xform->compress.window_size == RTE_COMP_ISAL_WINDOW_SIZE) 56 priv_xform->compress.window_size = 57 RTE_COMP_ISAL_WINDOW_SIZE; 58 else { 59 ISAL_PMD_LOG(ERR, "Window size not supported\n"); 60 return -ENOTSUP; 61 } 62 63 /* Set private xform huffman type */ 64 switch (xform->compress.deflate.huffman) { 65 case(RTE_COMP_HUFFMAN_DEFAULT): 66 priv_xform->compress.deflate.huffman = 67 RTE_COMP_HUFFMAN_DEFAULT; 68 break; 69 case(RTE_COMP_HUFFMAN_FIXED): 70 priv_xform->compress.deflate.huffman = 71 RTE_COMP_HUFFMAN_FIXED; 72 break; 73 case(RTE_COMP_HUFFMAN_DYNAMIC): 74 priv_xform->compress.deflate.huffman = 75 RTE_COMP_HUFFMAN_DYNAMIC; 76 break; 77 default: 78 ISAL_PMD_LOG(ERR, "Huffman code not supported\n"); 79 return -ENOTSUP; 80 } 81 82 /* Set private xform checksum */ 83 switch (xform->compress.chksum) { 84 /* Raw deflate by default */ 85 case(RTE_COMP_CHECKSUM_NONE): 86 priv_xform->compress.chksum = IGZIP_DEFLATE; 87 break; 88 case(RTE_COMP_CHECKSUM_CRC32): 89 priv_xform->compress.chksum = IGZIP_GZIP_NO_HDR; 90 break; 91 case(RTE_COMP_CHECKSUM_ADLER32): 92 priv_xform->compress.chksum = IGZIP_ZLIB_NO_HDR; 93 break; 94 case(RTE_COMP_CHECKSUM_CRC32_ADLER32): 95 ISAL_PMD_LOG(ERR, "Combined CRC and ADLER checksum not" 96 " supported\n"); 97 return -ENOTSUP; 98 default: 99 ISAL_PMD_LOG(ERR, "Checksum type not supported\n"); 100 priv_xform->compress.chksum = IGZIP_DEFLATE; 101 break; 102 } 103 104 /* Set private xform level. 105 * Checking compliance with compressdev API, -1 <= level => 9 106 */ 107 if (xform->compress.level < RTE_COMP_LEVEL_PMD_DEFAULT || 108 xform->compress.level > RTE_COMP_LEVEL_MAX) { 109 ISAL_PMD_LOG(ERR, "Compression level out of range\n"); 110 return -EINVAL; 111 } 112 /* Check for Compressdev API level 0, No compression 113 * not supported in ISA-L 114 */ 115 else if (xform->compress.level == RTE_COMP_LEVEL_NONE) { 116 ISAL_PMD_LOG(ERR, "No Compression not supported\n"); 117 return -ENOTSUP; 118 } 119 /* If using fixed huffman code, level must be 0 */ 120 else if (priv_xform->compress.deflate.huffman == 121 RTE_COMP_HUFFMAN_FIXED) { 122 ISAL_PMD_LOG(DEBUG, "ISA-L level 0 used due to a" 123 " fixed huffman code\n"); 124 priv_xform->compress.level = RTE_COMP_ISAL_LEVEL_ZERO; 125 priv_xform->level_buffer_size = 126 ISAL_DEF_LVL0_DEFAULT; 127 } else { 128 /* Mapping API levels to ISA-L levels 1,2 & 3 */ 129 switch (xform->compress.level) { 130 case RTE_COMP_LEVEL_PMD_DEFAULT: 131 /* Default is 1 if not using fixed huffman */ 132 priv_xform->compress.level = 133 RTE_COMP_ISAL_LEVEL_ONE; 134 priv_xform->level_buffer_size = 135 ISAL_DEF_LVL1_DEFAULT; 136 break; 137 case RTE_COMP_LEVEL_MIN: 138 priv_xform->compress.level = 139 RTE_COMP_ISAL_LEVEL_ONE; 140 priv_xform->level_buffer_size = 141 ISAL_DEF_LVL1_DEFAULT; 142 break; 143 case RTE_COMP_ISAL_LEVEL_TWO: 144 priv_xform->compress.level = 145 RTE_COMP_ISAL_LEVEL_TWO; 146 priv_xform->level_buffer_size = 147 ISAL_DEF_LVL2_DEFAULT; 148 break; 149 /* Level 3 or higher requested */ 150 default: 151 /* Check for AVX512, to use ISA-L level 3 */ 152 if (rte_cpu_get_flag_enabled( 153 RTE_CPUFLAG_AVX512F)) { 154 priv_xform->compress.level = 155 RTE_COMP_ISAL_LEVEL_THREE; 156 priv_xform->level_buffer_size = 157 ISAL_DEF_LVL3_DEFAULT; 158 } 159 /* Check for AVX2, to use ISA-L level 3 */ 160 else if (rte_cpu_get_flag_enabled( 161 RTE_CPUFLAG_AVX2)) { 162 priv_xform->compress.level = 163 RTE_COMP_ISAL_LEVEL_THREE; 164 priv_xform->level_buffer_size = 165 ISAL_DEF_LVL3_DEFAULT; 166 } else { 167 ISAL_PMD_LOG(DEBUG, "Requested ISA-L level" 168 " 3 or above; Level 3 optimized" 169 " for AVX512 & AVX2 only." 170 " level changed to 2.\n"); 171 priv_xform->compress.level = 172 RTE_COMP_ISAL_LEVEL_TWO; 173 priv_xform->level_buffer_size = 174 ISAL_DEF_LVL2_DEFAULT; 175 } 176 } 177 } 178 } 179 180 /* Set decompression private xform variables */ 181 else if (xform->type == RTE_COMP_DECOMPRESS) { 182 183 /* Set private xform type - COMPRESS/DECOMPRESS */ 184 priv_xform->type = RTE_COMP_DECOMPRESS; 185 186 /* Set private xform algorithm */ 187 if (xform->decompress.algo != RTE_COMP_ALGO_DEFLATE) { 188 if (xform->decompress.algo == RTE_COMP_ALGO_NULL) { 189 ISAL_PMD_LOG(ERR, "By pass not supported\n"); 190 return -ENOTSUP; 191 } 192 ISAL_PMD_LOG(ERR, "Algorithm not supported\n"); 193 return -ENOTSUP; 194 } 195 priv_xform->decompress.algo = RTE_COMP_ALGO_DEFLATE; 196 197 /* Set private xform checksum */ 198 switch (xform->decompress.chksum) { 199 /* Raw deflate by default */ 200 case(RTE_COMP_CHECKSUM_NONE): 201 priv_xform->decompress.chksum = ISAL_DEFLATE; 202 break; 203 case(RTE_COMP_CHECKSUM_CRC32): 204 priv_xform->decompress.chksum = ISAL_GZIP_NO_HDR; 205 break; 206 case(RTE_COMP_CHECKSUM_ADLER32): 207 priv_xform->decompress.chksum = ISAL_ZLIB_NO_HDR; 208 break; 209 case(RTE_COMP_CHECKSUM_CRC32_ADLER32): 210 ISAL_PMD_LOG(ERR, "Combined CRC and ADLER checksum not" 211 " supported\n"); 212 return -ENOTSUP; 213 default: 214 ISAL_PMD_LOG(ERR, "Checksum type not supported\n"); 215 priv_xform->decompress.chksum = ISAL_DEFLATE; 216 break; 217 } 218 219 /* Set private xform window size, 32K supported */ 220 if (xform->decompress.window_size == RTE_COMP_ISAL_WINDOW_SIZE) 221 priv_xform->decompress.window_size = 222 RTE_COMP_ISAL_WINDOW_SIZE; 223 else { 224 ISAL_PMD_LOG(ERR, "Window size not supported\n"); 225 return -ENOTSUP; 226 } 227 } 228 return 0; 229 } 230 231 /* Compression using chained mbufs for input/output data */ 232 static int 233 chained_mbuf_compression(struct rte_comp_op *op, struct isal_comp_qp *qp) 234 { 235 int ret; 236 uint32_t remaining_offset; 237 uint32_t remaining_data = op->src.length; 238 struct rte_mbuf *src = op->m_src; 239 struct rte_mbuf *dst = op->m_dst; 240 241 /* check for source/destination offset passing multiple segments 242 * and point compression stream to input/output buffer. 243 */ 244 remaining_offset = op->src.offset; 245 while (remaining_offset >= src->data_len) { 246 remaining_offset -= src->data_len; 247 src = src->next; 248 } 249 qp->stream->avail_in = RTE_MIN(src->data_len - remaining_offset, 250 op->src.length); 251 qp->stream->next_in = rte_pktmbuf_mtod_offset(src, uint8_t *, 252 remaining_offset); 253 254 remaining_offset = op->dst.offset; 255 while (remaining_offset >= dst->data_len) { 256 remaining_offset -= dst->data_len; 257 dst = dst->next; 258 } 259 qp->stream->avail_out = dst->data_len - remaining_offset; 260 qp->stream->next_out = rte_pktmbuf_mtod_offset(dst, uint8_t *, 261 remaining_offset); 262 263 if (unlikely(!qp->stream->next_in || !qp->stream->next_out)) { 264 ISAL_PMD_LOG(ERR, "Invalid source or destination buffer\n"); 265 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 266 return -1; 267 } 268 269 while (qp->stream->internal_state.state != ZSTATE_END) { 270 /* Last segment of data */ 271 if (remaining_data <= src->data_len) 272 qp->stream->end_of_stream = 1; 273 274 /* Execute compression operation */ 275 ret = isal_deflate(qp->stream); 276 277 remaining_data = op->src.length - qp->stream->total_in; 278 279 if (ret != COMP_OK) { 280 ISAL_PMD_LOG(ERR, "Compression operation failed\n"); 281 op->status = RTE_COMP_OP_STATUS_ERROR; 282 return ret; 283 } 284 285 if (qp->stream->avail_in == 0 && 286 qp->stream->total_in != op->src.length) { 287 if (src->next != NULL) { 288 src = src->next; 289 qp->stream->next_in = 290 rte_pktmbuf_mtod(src, uint8_t *); 291 qp->stream->avail_in = 292 RTE_MIN(remaining_data, src->data_len); 293 } else { 294 ISAL_PMD_LOG(ERR, 295 "Not enough input buffer segments\n"); 296 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 297 return -1; 298 } 299 } 300 301 if (qp->stream->avail_out == 0 && 302 qp->stream->internal_state.state != ZSTATE_END) { 303 if (dst->next != NULL) { 304 dst = dst->next; 305 qp->stream->next_out = 306 rte_pktmbuf_mtod(dst, uint8_t *); 307 qp->stream->avail_out = dst->data_len; 308 } else { 309 ISAL_PMD_LOG(ERR, 310 "Not enough output buffer segments\n"); 311 op->status = 312 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED; 313 return -1; 314 } 315 } 316 } 317 318 return 0; 319 } 320 321 /* Decompression using chained mbufs for input/output data */ 322 static int 323 chained_mbuf_decompression(struct rte_comp_op *op, struct isal_comp_qp *qp) 324 { 325 int ret; 326 uint32_t consumed_data, src_remaining_offset, dst_remaining_offset; 327 uint32_t remaining_data = op->src.length; 328 struct rte_mbuf *src = op->m_src; 329 struct rte_mbuf *dst = op->m_dst; 330 331 /* check for offset passing multiple segments 332 * and point decompression state to input/output buffer 333 */ 334 src_remaining_offset = op->src.offset; 335 while (src_remaining_offset >= src->data_len) { 336 src_remaining_offset -= src->data_len; 337 src = src->next; 338 } 339 qp->state->avail_in = RTE_MIN(src->data_len - src_remaining_offset, 340 op->src.length); 341 qp->state->next_in = rte_pktmbuf_mtod_offset(src, uint8_t *, 342 src_remaining_offset); 343 344 dst_remaining_offset = op->dst.offset; 345 while (dst_remaining_offset >= dst->data_len) { 346 dst_remaining_offset -= dst->data_len; 347 dst = dst->next; 348 } 349 qp->state->avail_out = dst->data_len - dst_remaining_offset; 350 qp->state->next_out = rte_pktmbuf_mtod_offset(dst, uint8_t *, 351 dst_remaining_offset); 352 353 while (qp->state->block_state != ISAL_BLOCK_FINISH) { 354 355 ret = isal_inflate(qp->state); 356 357 if (ret != ISAL_DECOMP_OK) { 358 ISAL_PMD_LOG(ERR, "Decompression operation failed\n"); 359 op->status = RTE_COMP_OP_STATUS_ERROR; 360 return ret; 361 } 362 363 /* Check for first segment, offset needs to be accounted for */ 364 if (remaining_data == op->src.length) { 365 consumed_data = src->data_len - src_remaining_offset; 366 } else 367 consumed_data = src->data_len; 368 369 if (qp->state->avail_in == 0 370 && op->consumed != op->src.length) { 371 op->consumed += consumed_data; 372 remaining_data -= consumed_data; 373 374 if (src->next != NULL) { 375 src = src->next; 376 qp->state->next_in = 377 rte_pktmbuf_mtod(src, uint8_t *); 378 qp->state->avail_in = 379 RTE_MIN(remaining_data, src->data_len); 380 } 381 } 382 383 if (qp->state->avail_out == 0 && 384 qp->state->block_state != ISAL_BLOCK_FINISH) { 385 if (dst->next != NULL) { 386 dst = dst->next; 387 qp->state->next_out = 388 rte_pktmbuf_mtod(dst, uint8_t *); 389 qp->state->avail_out = dst->data_len; 390 } else { 391 ISAL_PMD_LOG(ERR, 392 "Not enough output buffer segments\n"); 393 op->status = 394 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED; 395 return -1; 396 } 397 } 398 } 399 400 return 0; 401 } 402 403 /* Stateless Compression Function */ 404 static int 405 process_isal_deflate(struct rte_comp_op *op, struct isal_comp_qp *qp, 406 struct isal_priv_xform *priv_xform) 407 { 408 int ret = 0; 409 op->status = RTE_COMP_OP_STATUS_SUCCESS; 410 411 /* Required due to init clearing level_buf */ 412 uint8_t *temp_level_buf = qp->stream->level_buf; 413 414 /* Initialize compression stream */ 415 isal_deflate_stateless_init(qp->stream); 416 417 qp->stream->level_buf = temp_level_buf; 418 419 /* Set Checksum flag */ 420 qp->stream->gzip_flag = priv_xform->compress.chksum; 421 422 /* Stateless operation, input will be consumed in one go */ 423 qp->stream->flush = NO_FLUSH; 424 425 /* set compression level & intermediate level buffer size */ 426 qp->stream->level = priv_xform->compress.level; 427 qp->stream->level_buf_size = priv_xform->level_buffer_size; 428 429 /* Set op huffman code */ 430 if (priv_xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_FIXED) 431 isal_deflate_set_hufftables(qp->stream, NULL, 432 IGZIP_HUFFTABLE_STATIC); 433 else if (priv_xform->compress.deflate.huffman == 434 RTE_COMP_HUFFMAN_DEFAULT) 435 isal_deflate_set_hufftables(qp->stream, NULL, 436 IGZIP_HUFFTABLE_DEFAULT); 437 /* Dynamically change the huffman code to suit the input data */ 438 else if (priv_xform->compress.deflate.huffman == 439 RTE_COMP_HUFFMAN_DYNAMIC) 440 isal_deflate_set_hufftables(qp->stream, NULL, 441 IGZIP_HUFFTABLE_DEFAULT); 442 443 if (op->m_src->pkt_len < (op->src.length + op->src.offset)) { 444 ISAL_PMD_LOG(ERR, "Input mbuf(s) not big enough.\n"); 445 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 446 return -1; 447 } 448 449 if (op->dst.offset >= op->m_dst->pkt_len) { 450 ISAL_PMD_LOG(ERR, "Output mbuf(s) not big enough" 451 " for offset provided.\n"); 452 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 453 return -1; 454 } 455 456 /* Chained mbufs */ 457 if (op->m_src->nb_segs > 1 || op->m_dst->nb_segs > 1) { 458 ret = chained_mbuf_compression(op, qp); 459 if (ret < 0) 460 return ret; 461 } else { 462 /* Linear buffer */ 463 qp->stream->end_of_stream = 1; /* All input consumed in one */ 464 /* Point compression stream to input buffer */ 465 qp->stream->avail_in = op->src.length; 466 qp->stream->next_in = rte_pktmbuf_mtod_offset(op->m_src, 467 uint8_t *, op->src.offset); 468 469 /* Point compression stream to output buffer */ 470 qp->stream->avail_out = op->m_dst->data_len - op->dst.offset; 471 qp->stream->next_out = rte_pktmbuf_mtod_offset(op->m_dst, 472 uint8_t *, op->dst.offset); 473 474 if (unlikely(!qp->stream->next_in || !qp->stream->next_out)) { 475 ISAL_PMD_LOG(ERR, "Invalid source or destination" 476 " buffers\n"); 477 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 478 return -1; 479 } 480 481 /* Execute compression operation */ 482 ret = isal_deflate_stateless(qp->stream); 483 484 /* Check that output buffer did not run out of space */ 485 if (ret == STATELESS_OVERFLOW) { 486 ISAL_PMD_LOG(ERR, "Output buffer not big enough\n"); 487 op->status = RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED; 488 return ret; 489 } 490 491 /* Check that input buffer has been fully consumed */ 492 if (qp->stream->avail_in != (uint32_t)0) { 493 ISAL_PMD_LOG(ERR, "Input buffer could not be read" 494 " entirely\n"); 495 op->status = RTE_COMP_OP_STATUS_ERROR; 496 return -1; 497 } 498 499 if (ret != COMP_OK) { 500 ISAL_PMD_LOG(ERR, "Compression operation failed\n"); 501 op->status = RTE_COMP_OP_STATUS_ERROR; 502 return ret; 503 } 504 } 505 506 op->consumed = qp->stream->total_in; 507 if (qp->stream->gzip_flag == IGZIP_DEFLATE) { 508 op->produced = qp->stream->total_out; 509 } else if (qp->stream->gzip_flag == IGZIP_ZLIB_NO_HDR) { 510 op->produced = qp->stream->total_out - CHKSUM_SZ_ADLER; 511 op->output_chksum = qp->stream->internal_state.crc + 1; 512 } else { 513 op->produced = qp->stream->total_out - CHKSUM_SZ_CRC; 514 op->output_chksum = qp->stream->internal_state.crc; 515 } 516 517 isal_deflate_reset(qp->stream); 518 519 return ret; 520 } 521 522 /* Stateless Decompression Function */ 523 static int 524 process_isal_inflate(struct rte_comp_op *op, struct isal_comp_qp *qp, 525 struct isal_priv_xform *priv_xform) 526 { 527 int ret = 0; 528 529 op->status = RTE_COMP_OP_STATUS_SUCCESS; 530 531 /* Initialize decompression state */ 532 isal_inflate_init(qp->state); 533 534 /* Set Checksum flag */ 535 qp->state->crc_flag = priv_xform->decompress.chksum; 536 537 if (op->m_src->pkt_len < (op->src.length + op->src.offset)) { 538 ISAL_PMD_LOG(ERR, "Input mbuf(s) not big enough.\n"); 539 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 540 return -1; 541 } 542 543 if (op->dst.offset >= op->m_dst->pkt_len) { 544 ISAL_PMD_LOG(ERR, "Output mbuf not big enough for " 545 "offset provided.\n"); 546 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 547 return -1; 548 } 549 550 /* Chained mbufs */ 551 if (op->m_src->nb_segs > 1 || op->m_dst->nb_segs > 1) { 552 ret = chained_mbuf_decompression(op, qp); 553 if (ret != 0) 554 return ret; 555 } else { 556 /* Linear buffer */ 557 /* Point decompression state to input buffer */ 558 qp->state->avail_in = op->src.length; 559 qp->state->next_in = rte_pktmbuf_mtod_offset(op->m_src, 560 uint8_t *, op->src.offset); 561 562 /* Point decompression state to output buffer */ 563 qp->state->avail_out = op->m_dst->data_len - op->dst.offset; 564 qp->state->next_out = rte_pktmbuf_mtod_offset(op->m_dst, 565 uint8_t *, op->dst.offset); 566 567 if (unlikely(!qp->state->next_in || !qp->state->next_out)) { 568 ISAL_PMD_LOG(ERR, "Invalid source or destination" 569 " buffers\n"); 570 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 571 return -1; 572 } 573 574 /* Execute decompression operation */ 575 ret = isal_inflate_stateless(qp->state); 576 577 if (ret == ISAL_OUT_OVERFLOW) { 578 ISAL_PMD_LOG(ERR, "Output buffer not big enough\n"); 579 op->status = RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED; 580 return ret; 581 } 582 583 /* Check that input buffer has been fully consumed */ 584 if (qp->state->avail_in != (uint32_t)0) { 585 ISAL_PMD_LOG(ERR, "Input buffer could not be read" 586 " entirely\n"); 587 op->status = RTE_COMP_OP_STATUS_ERROR; 588 return -1; 589 } 590 591 if (ret != ISAL_DECOMP_OK && ret != ISAL_END_INPUT) { 592 ISAL_PMD_LOG(ERR, "Decompression operation failed\n"); 593 op->status = RTE_COMP_OP_STATUS_ERROR; 594 return ret; 595 } 596 op->consumed = op->src.length - qp->state->avail_in; 597 } 598 op->produced = qp->state->total_out; 599 op->output_chksum = qp->state->crc; 600 601 isal_inflate_reset(qp->state); 602 603 return ret; 604 } 605 606 /* Process compression/decompression operation */ 607 static int 608 process_op(struct isal_comp_qp *qp, struct rte_comp_op *op, 609 struct isal_priv_xform *priv_xform) 610 { 611 switch (priv_xform->type) { 612 case RTE_COMP_COMPRESS: 613 process_isal_deflate(op, qp, priv_xform); 614 break; 615 case RTE_COMP_DECOMPRESS: 616 process_isal_inflate(op, qp, priv_xform); 617 break; 618 default: 619 ISAL_PMD_LOG(ERR, "Operation Not Supported\n"); 620 return -ENOTSUP; 621 } 622 return 0; 623 } 624 625 /* Enqueue burst */ 626 static uint16_t 627 isal_comp_pmd_enqueue_burst(void *queue_pair, struct rte_comp_op **ops, 628 uint16_t nb_ops) 629 { 630 struct isal_comp_qp *qp = queue_pair; 631 uint16_t i; 632 int retval; 633 int16_t num_enq = RTE_MIN(qp->num_free_elements, nb_ops); 634 635 for (i = 0; i < num_enq; i++) { 636 if (unlikely(ops[i]->op_type != RTE_COMP_OP_STATELESS)) { 637 ops[i]->status = RTE_COMP_OP_STATUS_INVALID_ARGS; 638 ISAL_PMD_LOG(ERR, "Stateful operation not Supported\n"); 639 qp->qp_stats.enqueue_err_count++; 640 continue; 641 } 642 retval = process_op(qp, ops[i], ops[i]->private_xform); 643 if (unlikely(retval < 0) || 644 ops[i]->status != RTE_COMP_OP_STATUS_SUCCESS) { 645 qp->qp_stats.enqueue_err_count++; 646 } 647 } 648 649 retval = rte_ring_enqueue_burst(qp->processed_pkts, (void *)ops, 650 num_enq, NULL); 651 qp->num_free_elements -= retval; 652 qp->qp_stats.enqueued_count += retval; 653 654 return retval; 655 } 656 657 /* Dequeue burst */ 658 static uint16_t 659 isal_comp_pmd_dequeue_burst(void *queue_pair, struct rte_comp_op **ops, 660 uint16_t nb_ops) 661 { 662 struct isal_comp_qp *qp = queue_pair; 663 uint16_t nb_dequeued; 664 665 nb_dequeued = rte_ring_dequeue_burst(qp->processed_pkts, (void **)ops, 666 nb_ops, NULL); 667 qp->num_free_elements += nb_dequeued; 668 qp->qp_stats.dequeued_count += nb_dequeued; 669 670 return nb_dequeued; 671 } 672 673 /* Create ISA-L compression device */ 674 static int 675 compdev_isal_create(const char *name, struct rte_vdev_device *vdev, 676 struct rte_compressdev_pmd_init_params *init_params) 677 { 678 struct rte_compressdev *dev; 679 680 dev = rte_compressdev_pmd_create(name, &vdev->device, 681 sizeof(struct isal_comp_private), init_params); 682 if (dev == NULL) { 683 ISAL_PMD_LOG(ERR, "failed to create compressdev vdev"); 684 return -EFAULT; 685 } 686 687 dev->dev_ops = isal_compress_pmd_ops; 688 689 /* register rx/tx burst functions for data path */ 690 dev->dequeue_burst = isal_comp_pmd_dequeue_burst; 691 dev->enqueue_burst = isal_comp_pmd_enqueue_burst; 692 693 ISAL_PMD_LOG(INFO, "\nISA-L library version used: "ISAL_VERSION_STRING); 694 695 return 0; 696 } 697 698 /** Remove compression device */ 699 static int 700 compdev_isal_remove_dev(struct rte_vdev_device *vdev) 701 { 702 struct rte_compressdev *compdev; 703 const char *name; 704 705 name = rte_vdev_device_name(vdev); 706 if (name == NULL) 707 return -EINVAL; 708 709 compdev = rte_compressdev_pmd_get_named_dev(name); 710 if (compdev == NULL) 711 return -ENODEV; 712 713 return rte_compressdev_pmd_destroy(compdev); 714 } 715 716 /** Initialise ISA-L compression device */ 717 static int 718 compdev_isal_probe(struct rte_vdev_device *dev) 719 { 720 struct rte_compressdev_pmd_init_params init_params = { 721 "", 722 rte_socket_id(), 723 }; 724 const char *name, *args; 725 int retval; 726 727 name = rte_vdev_device_name(dev); 728 if (name == NULL) 729 return -EINVAL; 730 731 args = rte_vdev_device_args(dev); 732 733 retval = rte_compressdev_pmd_parse_input_args(&init_params, args); 734 if (retval) { 735 ISAL_PMD_LOG(ERR, 736 "Failed to parse initialisation arguments[%s]\n", args); 737 return -EINVAL; 738 } 739 740 return compdev_isal_create(name, dev, &init_params); 741 } 742 743 static struct rte_vdev_driver compdev_isal_pmd_drv = { 744 .probe = compdev_isal_probe, 745 .remove = compdev_isal_remove_dev, 746 }; 747 748 RTE_PMD_REGISTER_VDEV(COMPDEV_NAME_ISAL_PMD, compdev_isal_pmd_drv); 749 RTE_PMD_REGISTER_PARAM_STRING(COMPDEV_NAME_ISAL_PMD, 750 "socket_id=<int>"); 751 752 RTE_INIT(isal_init_log) 753 { 754 isal_logtype_driver = rte_log_register("pmd.compress.isal"); 755 if (isal_logtype_driver >= 0) 756 rte_log_set_level(isal_logtype_driver, RTE_LOG_INFO); 757 } 758