1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2020 Intel Corporation
5 #include "iavf_rxtx_vec_common.h"
9 #ifndef __INTEL_COMPILER
10 #pragma GCC diagnostic ignored "-Wcast-qual"
13 #define IAVF_DESCS_PER_LOOP_AVX 8
14 #define PKTLEN_SHIFT 10
16 /******************************************************************************
17 * If user knows a specific offload is not enabled by APP,
18 * the macro can be commented to save the effort of fast path.
19 * Currently below 2 features are supported in RX path,
21 * 2, VLAN/QINQ stripping
23 * 4, packet type analysis
24 * 5, flow director ID report
25 ******************************************************************************/
26 #define IAVF_RX_CSUM_OFFLOAD
27 #define IAVF_RX_VLAN_OFFLOAD
28 #define IAVF_RX_RSS_OFFLOAD
29 #define IAVF_RX_PTYPE_OFFLOAD
30 #define IAVF_RX_FDIR_OFFLOAD
32 static __rte_always_inline void
33 iavf_rxq_rearm(struct iavf_rx_queue *rxq)
37 volatile union iavf_rx_desc *rxdp;
38 struct rte_mempool_cache *cache =
39 rte_mempool_default_cache(rxq->mp, rte_lcore_id());
40 struct rte_mbuf **rxp = &rxq->sw_ring[rxq->rxrearm_start];
42 rxdp = rxq->rx_ring + rxq->rxrearm_start;
45 return iavf_rxq_rearm_common(rxq, true);
47 /* We need to pull 'n' more MBUFs into the software ring from mempool
48 * We inline the mempool function here, so we can vectorize the copy
49 * from the cache into the shadow ring.
52 /* Can this be satisfied from the cache? */
53 if (cache->len < IAVF_RXQ_REARM_THRESH) {
54 /* No. Backfill the cache first, and then fill from it */
55 uint32_t req = IAVF_RXQ_REARM_THRESH + (cache->size -
58 /* How many do we require i.e. number to fill the cache + the request */
59 int ret = rte_mempool_ops_dequeue_bulk
60 (rxq->mp, &cache->objs[cache->len], req);
64 if (rxq->rxrearm_nb + IAVF_RXQ_REARM_THRESH >=
68 dma_addr0 = _mm_setzero_si128();
69 for (i = 0; i < IAVF_VPMD_DESCS_PER_LOOP; i++) {
70 rxp[i] = &rxq->fake_mbuf;
71 _mm_storeu_si128((__m128i *)&rxdp[i].read,
75 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
76 IAVF_RXQ_REARM_THRESH;
81 const __m512i iova_offsets = _mm512_set1_epi64(offsetof
82 (struct rte_mbuf, buf_iova));
83 const __m512i headroom = _mm512_set1_epi64(RTE_PKTMBUF_HEADROOM);
85 #ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
86 /* to shuffle the addresses to correct slots. Values 4-7 will contain
87 * zeros, so use 7 for a zero-value.
89 const __m512i permute_idx = _mm512_set_epi64(7, 7, 3, 1, 7, 7, 2, 0);
91 const __m512i permute_idx = _mm512_set_epi64(7, 3, 6, 2, 5, 1, 4, 0);
94 /* Initialize the mbufs in vector, process 8 mbufs in one loop, taking
95 * from mempool cache and populating both shadow and HW rings
97 for (i = 0; i < IAVF_RXQ_REARM_THRESH / IAVF_DESCS_PER_LOOP_AVX; i++) {
98 const __m512i mbuf_ptrs = _mm512_loadu_si512
99 (&cache->objs[cache->len - IAVF_DESCS_PER_LOOP_AVX]);
100 _mm512_storeu_si512(rxp, mbuf_ptrs);
102 const __m512i iova_base_addrs = _mm512_i64gather_epi64
103 (_mm512_add_epi64(mbuf_ptrs, iova_offsets),
106 const __m512i iova_addrs = _mm512_add_epi64(iova_base_addrs,
108 #ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
109 const __m512i iovas0 = _mm512_castsi256_si512
110 (_mm512_extracti64x4_epi64(iova_addrs, 0));
111 const __m512i iovas1 = _mm512_castsi256_si512
112 (_mm512_extracti64x4_epi64(iova_addrs, 1));
114 /* permute leaves desc 2-3 addresses in header address slots 0-1
115 * but these are ignored by driver since header split not
116 * enabled. Similarly for desc 6 & 7.
118 const __m512i desc0_1 = _mm512_permutexvar_epi64
121 const __m512i desc2_3 = _mm512_bsrli_epi128(desc0_1, 8);
123 const __m512i desc4_5 = _mm512_permutexvar_epi64
126 const __m512i desc6_7 = _mm512_bsrli_epi128(desc4_5, 8);
128 _mm512_storeu_si512((void *)rxdp, desc0_1);
129 _mm512_storeu_si512((void *)(rxdp + 2), desc2_3);
130 _mm512_storeu_si512((void *)(rxdp + 4), desc4_5);
131 _mm512_storeu_si512((void *)(rxdp + 6), desc6_7);
133 /* permute leaves desc 4-7 addresses in header address slots 0-3
134 * but these are ignored by driver since header split not
137 const __m512i desc0_3 = _mm512_permutexvar_epi64(permute_idx,
139 const __m512i desc4_7 = _mm512_bsrli_epi128(desc0_3, 8);
141 _mm512_storeu_si512((void *)rxdp, desc0_3);
142 _mm512_storeu_si512((void *)(rxdp + 4), desc4_7);
144 rxp += IAVF_DESCS_PER_LOOP_AVX;
145 rxdp += IAVF_DESCS_PER_LOOP_AVX;
146 cache->len -= IAVF_DESCS_PER_LOOP_AVX;
149 rxq->rxrearm_start += IAVF_RXQ_REARM_THRESH;
150 if (rxq->rxrearm_start >= rxq->nb_rx_desc)
151 rxq->rxrearm_start = 0;
153 rxq->rxrearm_nb -= IAVF_RXQ_REARM_THRESH;
155 rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
156 (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
158 /* Update the tail pointer on the NIC */
159 IAVF_PCI_REG_WC_WRITE(rxq->qrx_tail, rx_id);
162 #define IAVF_RX_LEN_MASK 0x80808080
163 static __rte_always_inline uint16_t
164 _iavf_recv_raw_pkts_vec_avx512(struct iavf_rx_queue *rxq,
165 struct rte_mbuf **rx_pkts,
166 uint16_t nb_pkts, uint8_t *split_packet,
169 #ifdef IAVF_RX_PTYPE_OFFLOAD
170 const uint32_t *type_table = rxq->vsi->adapter->ptype_tbl;
173 const __m256i mbuf_init = _mm256_set_epi64x(0, 0, 0,
174 rxq->mbuf_initializer);
175 struct rte_mbuf **sw_ring = &rxq->sw_ring[rxq->rx_tail];
176 volatile union iavf_rx_desc *rxdp = rxq->rx_ring + rxq->rx_tail;
180 /* nb_pkts has to be floor-aligned to IAVF_DESCS_PER_LOOP_AVX */
181 nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IAVF_DESCS_PER_LOOP_AVX);
183 /* See if we need to rearm the RX queue - gives the prefetch a bit
186 if (rxq->rxrearm_nb > IAVF_RXQ_REARM_THRESH)
189 /* Before we start moving massive data around, check to see if
190 * there is actually a packet available
192 if (!(rxdp->wb.qword1.status_error_len &
193 rte_cpu_to_le_32(1 << IAVF_RX_DESC_STATUS_DD_SHIFT)))
196 /* constants used in processing loop */
197 const __m512i crc_adjust =
199 (/* 1st descriptor */
200 0, /* ignore non-length fields */
201 -rxq->crc_len, /* sub crc on data_len */
202 -rxq->crc_len, /* sub crc on pkt_len */
203 0, /* ignore pkt_type field */
205 0, /* ignore non-length fields */
206 -rxq->crc_len, /* sub crc on data_len */
207 -rxq->crc_len, /* sub crc on pkt_len */
208 0, /* ignore pkt_type field */
210 0, /* ignore non-length fields */
211 -rxq->crc_len, /* sub crc on data_len */
212 -rxq->crc_len, /* sub crc on pkt_len */
213 0, /* ignore pkt_type field */
215 0, /* ignore non-length fields */
216 -rxq->crc_len, /* sub crc on data_len */
217 -rxq->crc_len, /* sub crc on pkt_len */
218 0 /* ignore pkt_type field */
221 /* 8 packets DD mask, LSB in each 32-bit value */
222 const __m256i dd_check = _mm256_set1_epi32(1);
224 /* 8 packets EOP mask, second-LSB in each 32-bit value */
225 const __m256i eop_check = _mm256_slli_epi32(dd_check,
226 IAVF_RX_DESC_STATUS_EOF_SHIFT);
228 /* mask to shuffle from desc. to mbuf (4 descriptors)*/
229 const __m512i shuf_msk =
231 (/* 1st descriptor */
232 0x07060504, /* octet 4~7, 32bits rss */
233 0x03020F0E, /* octet 2~3, low 16 bits vlan_macip */
234 /* octet 15~14, 16 bits data_len */
235 0xFFFF0F0E, /* skip high 16 bits pkt_len, zero out */
236 /* octet 15~14, low 16 bits pkt_len */
237 0xFFFFFFFF, /* pkt_type set as unknown */
239 0x07060504, /* octet 4~7, 32bits rss */
240 0x03020F0E, /* octet 2~3, low 16 bits vlan_macip */
241 /* octet 15~14, 16 bits data_len */
242 0xFFFF0F0E, /* skip high 16 bits pkt_len, zero out */
243 /* octet 15~14, low 16 bits pkt_len */
244 0xFFFFFFFF, /* pkt_type set as unknown */
246 0x07060504, /* octet 4~7, 32bits rss */
247 0x03020F0E, /* octet 2~3, low 16 bits vlan_macip */
248 /* octet 15~14, 16 bits data_len */
249 0xFFFF0F0E, /* skip high 16 bits pkt_len, zero out */
250 /* octet 15~14, low 16 bits pkt_len */
251 0xFFFFFFFF, /* pkt_type set as unknown */
253 0x07060504, /* octet 4~7, 32bits rss */
254 0x03020F0E, /* octet 2~3, low 16 bits vlan_macip */
255 /* octet 15~14, 16 bits data_len */
256 0xFFFF0F0E, /* skip high 16 bits pkt_len, zero out */
257 /* octet 15~14, low 16 bits pkt_len */
258 0xFFFFFFFF /* pkt_type set as unknown */
261 * compile-time check the above crc and shuffle layout is correct.
262 * NOTE: the first field (lowest address) is given last in set_epi
265 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
266 offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
267 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
268 offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
269 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
270 offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
271 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
272 offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
274 uint16_t i, received;
276 for (i = 0, received = 0; i < nb_pkts;
277 i += IAVF_DESCS_PER_LOOP_AVX,
278 rxdp += IAVF_DESCS_PER_LOOP_AVX) {
279 /* step 1, copy over 8 mbuf pointers to rx_pkts array */
280 _mm256_storeu_si256((void *)&rx_pkts[i],
281 _mm256_loadu_si256((void *)&sw_ring[i]));
282 #ifdef RTE_ARCH_X86_64
284 ((void *)&rx_pkts[i + 4],
285 _mm256_loadu_si256((void *)&sw_ring[i + 4]));
288 __m512i raw_desc0_3, raw_desc4_7;
289 const __m128i raw_desc7 =
290 _mm_load_si128((void *)(rxdp + 7));
291 rte_compiler_barrier();
292 const __m128i raw_desc6 =
293 _mm_load_si128((void *)(rxdp + 6));
294 rte_compiler_barrier();
295 const __m128i raw_desc5 =
296 _mm_load_si128((void *)(rxdp + 5));
297 rte_compiler_barrier();
298 const __m128i raw_desc4 =
299 _mm_load_si128((void *)(rxdp + 4));
300 rte_compiler_barrier();
301 const __m128i raw_desc3 =
302 _mm_load_si128((void *)(rxdp + 3));
303 rte_compiler_barrier();
304 const __m128i raw_desc2 =
305 _mm_load_si128((void *)(rxdp + 2));
306 rte_compiler_barrier();
307 const __m128i raw_desc1 =
308 _mm_load_si128((void *)(rxdp + 1));
309 rte_compiler_barrier();
310 const __m128i raw_desc0 =
311 _mm_load_si128((void *)(rxdp + 0));
313 raw_desc4_7 = _mm512_broadcast_i32x4(raw_desc4);
314 raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc5, 1);
315 raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc6, 2);
316 raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc7, 3);
317 raw_desc0_3 = _mm512_broadcast_i32x4(raw_desc0);
318 raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc1, 1);
319 raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc2, 2);
320 raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc3, 3);
325 for (j = 0; j < IAVF_DESCS_PER_LOOP_AVX; j++)
326 rte_mbuf_prefetch_part2(rx_pkts[i + j]);
330 * convert descriptors 4-7 into mbufs, adjusting length and
331 * re-arranging fields. Then write into the mbuf
333 const __m512i len4_7 = _mm512_slli_epi32(raw_desc4_7,
335 const __m512i desc4_7 = _mm512_mask_blend_epi16(IAVF_RX_LEN_MASK,
338 __m512i mb4_7 = _mm512_shuffle_epi8(desc4_7, shuf_msk);
340 mb4_7 = _mm512_add_epi32(mb4_7, crc_adjust);
341 #ifdef IAVF_RX_PTYPE_OFFLOAD
343 * to get packet types, shift 64-bit values down 30 bits
344 * and so ptype is in lower 8-bits in each
346 const __m512i ptypes4_7 = _mm512_srli_epi64(desc4_7, 30);
347 const __m256i ptypes6_7 = _mm512_extracti64x4_epi64(ptypes4_7, 1);
348 const __m256i ptypes4_5 = _mm512_extracti64x4_epi64(ptypes4_7, 0);
349 const uint8_t ptype7 = _mm256_extract_epi8(ptypes6_7, 24);
350 const uint8_t ptype6 = _mm256_extract_epi8(ptypes6_7, 8);
351 const uint8_t ptype5 = _mm256_extract_epi8(ptypes4_5, 24);
352 const uint8_t ptype4 = _mm256_extract_epi8(ptypes4_5, 8);
354 const __m512i ptype4_7 = _mm512_set_epi32
355 (0, 0, 0, type_table[ptype7],
356 0, 0, 0, type_table[ptype6],
357 0, 0, 0, type_table[ptype5],
358 0, 0, 0, type_table[ptype4]);
359 mb4_7 = _mm512_mask_blend_epi32(0x1111, mb4_7, ptype4_7);
363 * convert descriptors 0-3 into mbufs, adjusting length and
364 * re-arranging fields. Then write into the mbuf
366 const __m512i len0_3 = _mm512_slli_epi32(raw_desc0_3,
368 const __m512i desc0_3 = _mm512_mask_blend_epi16(IAVF_RX_LEN_MASK,
371 __m512i mb0_3 = _mm512_shuffle_epi8(desc0_3, shuf_msk);
373 mb0_3 = _mm512_add_epi32(mb0_3, crc_adjust);
374 #ifdef IAVF_RX_PTYPE_OFFLOAD
375 /* get the packet types */
376 const __m512i ptypes0_3 = _mm512_srli_epi64(desc0_3, 30);
377 const __m256i ptypes2_3 = _mm512_extracti64x4_epi64(ptypes0_3, 1);
378 const __m256i ptypes0_1 = _mm512_extracti64x4_epi64(ptypes0_3, 0);
379 const uint8_t ptype3 = _mm256_extract_epi8(ptypes2_3, 24);
380 const uint8_t ptype2 = _mm256_extract_epi8(ptypes2_3, 8);
381 const uint8_t ptype1 = _mm256_extract_epi8(ptypes0_1, 24);
382 const uint8_t ptype0 = _mm256_extract_epi8(ptypes0_1, 8);
384 const __m512i ptype0_3 = _mm512_set_epi32
385 (0, 0, 0, type_table[ptype3],
386 0, 0, 0, type_table[ptype2],
387 0, 0, 0, type_table[ptype1],
388 0, 0, 0, type_table[ptype0]);
389 mb0_3 = _mm512_mask_blend_epi32(0x1111, mb0_3, ptype0_3);
393 * use permute/extract to get status content
394 * After the operations, the packets status flags are in the
395 * order (hi->lo): [1, 3, 5, 7, 0, 2, 4, 6]
397 /* merge the status bits into one register */
398 const __m512i status_permute_msk = _mm512_set_epi32
403 const __m512i raw_status0_7 = _mm512_permutex2var_epi32
404 (raw_desc4_7, status_permute_msk, raw_desc0_3);
405 __m256i status0_7 = _mm512_extracti64x4_epi64
408 /* now do flag manipulation */
411 __m256i mbuf_flags = _mm256_set1_epi32(0);
414 #if defined(IAVF_RX_CSUM_OFFLOAD) || defined(IAVF_RX_VLAN_OFFLOAD) || defined(IAVF_RX_RSS_OFFLOAD)
415 /* Status/Error flag masks */
417 * mask everything except RSS, flow director and VLAN flags
418 * bit2 is for VLAN tag, bit11 for flow director indication
419 * bit13:12 for RSS indication. Bits 3-5 of error
420 * field (bits 22-24) are for IP/L4 checksum errors
422 const __m256i flags_mask =
423 _mm256_set1_epi32((1 << 2) | (1 << 11) |
424 (3 << 12) | (7 << 22));
427 #ifdef IAVF_RX_VLAN_OFFLOAD
429 * data to be shuffled by result of flag mask. If VLAN bit is set,
430 * (bit 2), then position 4 in this array will be used in the
433 const __m256i vlan_flags_shuf =
434 _mm256_set_epi32(0, 0, RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED, 0,
435 0, 0, RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED, 0);
438 #ifdef IAVF_RX_RSS_OFFLOAD
440 * data to be shuffled by result of flag mask, shifted down 11.
441 * If RSS/FDIR bits are set, shuffle moves appropriate flags in
444 const __m256i rss_flags_shuf =
445 _mm256_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
446 RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_RSS_HASH,
447 0, 0, 0, 0, RTE_MBUF_F_RX_FDIR, 0,/* end up 128-bits */
448 0, 0, 0, 0, 0, 0, 0, 0,
449 RTE_MBUF_F_RX_RSS_HASH | RTE_MBUF_F_RX_FDIR, RTE_MBUF_F_RX_RSS_HASH,
450 0, 0, 0, 0, RTE_MBUF_F_RX_FDIR, 0);
453 #ifdef IAVF_RX_CSUM_OFFLOAD
455 * data to be shuffled by the result of the flags mask shifted by 22
456 * bits. This gives use the l3_l4 flags.
458 const __m256i l3_l4_flags_shuf = _mm256_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
459 /* shift right 1 bit to make sure it not exceed 255 */
460 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
461 RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
462 (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
463 RTE_MBUF_F_RX_L4_CKSUM_BAD) >> 1,
464 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
465 (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD) >> 1,
466 (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
467 (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD) >> 1,
468 RTE_MBUF_F_RX_IP_CKSUM_BAD >> 1,
469 (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD) >> 1,
470 /* second 128-bits */
471 0, 0, 0, 0, 0, 0, 0, 0,
472 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
473 RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
474 (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD |
475 RTE_MBUF_F_RX_L4_CKSUM_BAD) >> 1,
476 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
477 (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD) >> 1,
478 (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
479 (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD) >> 1,
480 RTE_MBUF_F_RX_IP_CKSUM_BAD >> 1,
481 (RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_GOOD) >> 1);
483 const __m256i cksum_mask =
484 _mm256_set1_epi32(RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
485 RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
486 RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD);
489 #if defined(IAVF_RX_CSUM_OFFLOAD) || defined(IAVF_RX_VLAN_OFFLOAD) || defined(IAVF_RX_RSS_OFFLOAD)
490 /* get only flag/error bits we want */
491 const __m256i flag_bits =
492 _mm256_and_si256(status0_7, flags_mask);
494 /* set vlan and rss flags */
495 #ifdef IAVF_RX_VLAN_OFFLOAD
496 const __m256i vlan_flags =
497 _mm256_shuffle_epi8(vlan_flags_shuf, flag_bits);
499 #ifdef IAVF_RX_RSS_OFFLOAD
500 const __m256i rss_flags =
501 _mm256_shuffle_epi8(rss_flags_shuf,
502 _mm256_srli_epi32(flag_bits, 11));
504 #ifdef IAVF_RX_CSUM_OFFLOAD
506 * l3_l4_error flags, shuffle, then shift to correct adjustment
507 * of flags in flags_shuf, and finally mask out extra bits
509 __m256i l3_l4_flags = _mm256_shuffle_epi8(l3_l4_flags_shuf,
510 _mm256_srli_epi32(flag_bits, 22));
511 l3_l4_flags = _mm256_slli_epi32(l3_l4_flags, 1);
512 l3_l4_flags = _mm256_and_si256(l3_l4_flags, cksum_mask);
515 #ifdef IAVF_RX_CSUM_OFFLOAD
516 mbuf_flags = _mm256_or_si256(mbuf_flags, l3_l4_flags);
518 #ifdef IAVF_RX_RSS_OFFLOAD
519 mbuf_flags = _mm256_or_si256(mbuf_flags, rss_flags);
521 #ifdef IAVF_RX_VLAN_OFFLOAD
522 mbuf_flags = _mm256_or_si256(mbuf_flags, vlan_flags);
527 * At this point, we have the 8 sets of flags in the low 16-bits
528 * of each 32-bit value in vlan0.
529 * We want to extract these, and merge them with the mbuf init
530 * data so we can do a single write to the mbuf to set the flags
531 * and all the other initialization fields. Extracting the
532 * appropriate flags means that we have to do a shift and blend
533 * for each mbuf before we do the write. However, we can also
534 * add in the previously computed rx_descriptor fields to
535 * make a single 256-bit write per mbuf
537 /* check the structure matches expectations */
538 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
539 offsetof(struct rte_mbuf, rearm_data) + 8);
540 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
541 RTE_ALIGN(offsetof(struct rte_mbuf,
544 /* build up data and do writes */
545 __m256i rearm0, rearm1, rearm2, rearm3, rearm4, rearm5,
547 const __m256i mb4_5 = _mm512_extracti64x4_epi64(mb4_7, 0);
548 const __m256i mb6_7 = _mm512_extracti64x4_epi64(mb4_7, 1);
549 const __m256i mb0_1 = _mm512_extracti64x4_epi64(mb0_3, 0);
550 const __m256i mb2_3 = _mm512_extracti64x4_epi64(mb0_3, 1);
553 rearm6 = _mm256_blend_epi32(mbuf_init,
554 _mm256_slli_si256(mbuf_flags, 8),
556 rearm4 = _mm256_blend_epi32(mbuf_init,
557 _mm256_slli_si256(mbuf_flags, 4),
559 rearm2 = _mm256_blend_epi32(mbuf_init, mbuf_flags, 0x04);
560 rearm0 = _mm256_blend_epi32(mbuf_init,
561 _mm256_srli_si256(mbuf_flags, 4),
563 /* permute to add in the rx_descriptor e.g. rss fields */
564 rearm6 = _mm256_permute2f128_si256(rearm6, mb6_7, 0x20);
565 rearm4 = _mm256_permute2f128_si256(rearm4, mb4_5, 0x20);
566 rearm2 = _mm256_permute2f128_si256(rearm2, mb2_3, 0x20);
567 rearm0 = _mm256_permute2f128_si256(rearm0, mb0_1, 0x20);
569 rearm6 = _mm256_permute2f128_si256(mbuf_init, mb6_7, 0x20);
570 rearm4 = _mm256_permute2f128_si256(mbuf_init, mb4_5, 0x20);
571 rearm2 = _mm256_permute2f128_si256(mbuf_init, mb2_3, 0x20);
572 rearm0 = _mm256_permute2f128_si256(mbuf_init, mb0_1, 0x20);
575 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 6]->rearm_data,
577 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 4]->rearm_data,
579 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 2]->rearm_data,
581 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 0]->rearm_data,
584 /* repeat for the odd mbufs */
586 const __m256i odd_flags =
587 _mm256_castsi128_si256
588 (_mm256_extracti128_si256(mbuf_flags, 1));
589 rearm7 = _mm256_blend_epi32(mbuf_init,
590 _mm256_slli_si256(odd_flags, 8),
592 rearm5 = _mm256_blend_epi32(mbuf_init,
593 _mm256_slli_si256(odd_flags, 4),
595 rearm3 = _mm256_blend_epi32(mbuf_init, odd_flags, 0x04);
596 rearm1 = _mm256_blend_epi32(mbuf_init,
597 _mm256_srli_si256(odd_flags, 4),
599 /* since odd mbufs are already in hi 128-bits use blend */
600 rearm7 = _mm256_blend_epi32(rearm7, mb6_7, 0xF0);
601 rearm5 = _mm256_blend_epi32(rearm5, mb4_5, 0xF0);
602 rearm3 = _mm256_blend_epi32(rearm3, mb2_3, 0xF0);
603 rearm1 = _mm256_blend_epi32(rearm1, mb0_1, 0xF0);
605 rearm7 = _mm256_blend_epi32(mbuf_init, mb6_7, 0xF0);
606 rearm5 = _mm256_blend_epi32(mbuf_init, mb4_5, 0xF0);
607 rearm3 = _mm256_blend_epi32(mbuf_init, mb2_3, 0xF0);
608 rearm1 = _mm256_blend_epi32(mbuf_init, mb0_1, 0xF0);
610 /* again write to mbufs */
611 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 7]->rearm_data,
613 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 5]->rearm_data,
615 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 3]->rearm_data,
617 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 1]->rearm_data,
620 /* extract and record EOP bit */
622 const __m128i eop_mask =
623 _mm_set1_epi16(1 << IAVF_RX_DESC_STATUS_EOF_SHIFT);
624 const __m256i eop_bits256 = _mm256_and_si256(status0_7,
626 /* pack status bits into a single 128-bit register */
627 const __m128i eop_bits =
629 (_mm256_castsi256_si128(eop_bits256),
630 _mm256_extractf128_si256(eop_bits256,
633 * flip bits, and mask out the EOP bit, which is now
634 * a split-packet bit i.e. !EOP, rather than EOP one.
636 __m128i split_bits = _mm_andnot_si128(eop_bits,
639 * eop bits are out of order, so we need to shuffle them
640 * back into order again. In doing so, only use low 8
641 * bits, which acts like another pack instruction
642 * The original order is (hi->lo): 1,3,5,7,0,2,4,6
643 * [Since we use epi8, the 16-bit positions are
644 * multiplied by 2 in the eop_shuffle value.]
646 __m128i eop_shuffle =
647 _mm_set_epi8(/* zero hi 64b */
648 0xFF, 0xFF, 0xFF, 0xFF,
649 0xFF, 0xFF, 0xFF, 0xFF,
650 /* move values to lo 64b */
653 split_bits = _mm_shuffle_epi8(split_bits, eop_shuffle);
654 *(uint64_t *)split_packet =
655 _mm_cvtsi128_si64(split_bits);
656 split_packet += IAVF_DESCS_PER_LOOP_AVX;
659 /* perform dd_check */
660 status0_7 = _mm256_and_si256(status0_7, dd_check);
661 status0_7 = _mm256_packs_epi32(status0_7,
662 _mm256_setzero_si256());
664 uint64_t burst = __builtin_popcountll
666 (_mm256_extracti128_si256
668 burst += __builtin_popcountll
670 (_mm256_castsi256_si128(status0_7)));
672 if (burst != IAVF_DESCS_PER_LOOP_AVX)
676 /* update tail pointers */
677 rxq->rx_tail += received;
678 rxq->rx_tail &= (rxq->nb_rx_desc - 1);
679 if ((rxq->rx_tail & 1) == 1 && received > 1) { /* keep aligned */
683 rxq->rxrearm_nb += received;
687 static __rte_always_inline __m256i
688 flex_rxd_to_fdir_flags_vec_avx512(const __m256i fdir_id0_7)
690 #define FDID_MIS_MAGIC 0xFFFFFFFF
691 RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR != (1 << 2));
692 RTE_BUILD_BUG_ON(RTE_MBUF_F_RX_FDIR_ID != (1 << 13));
693 const __m256i pkt_fdir_bit = _mm256_set1_epi32(RTE_MBUF_F_RX_FDIR |
694 RTE_MBUF_F_RX_FDIR_ID);
695 /* desc->flow_id field == 0xFFFFFFFF means fdir mismatch */
696 const __m256i fdir_mis_mask = _mm256_set1_epi32(FDID_MIS_MAGIC);
697 __m256i fdir_mask = _mm256_cmpeq_epi32(fdir_id0_7,
699 /* this XOR op results to bit-reverse the fdir_mask */
700 fdir_mask = _mm256_xor_si256(fdir_mask, fdir_mis_mask);
701 const __m256i fdir_flags = _mm256_and_si256(fdir_mask, pkt_fdir_bit);
706 static __rte_always_inline uint16_t
707 _iavf_recv_raw_pkts_vec_avx512_flex_rxd(struct iavf_rx_queue *rxq,
708 struct rte_mbuf **rx_pkts,
710 uint8_t *split_packet,
713 struct iavf_adapter *adapter = rxq->vsi->adapter;
715 uint64_t offloads = adapter->dev_data->dev_conf.rxmode.offloads;
717 #ifdef IAVF_RX_PTYPE_OFFLOAD
718 const uint32_t *type_table = adapter->ptype_tbl;
721 const __m256i mbuf_init = _mm256_set_epi64x(0, 0, 0,
722 rxq->mbuf_initializer);
723 struct rte_mbuf **sw_ring = &rxq->sw_ring[rxq->rx_tail];
724 volatile union iavf_rx_flex_desc *rxdp =
725 (union iavf_rx_flex_desc *)rxq->rx_ring + rxq->rx_tail;
729 /* nb_pkts has to be floor-aligned to IAVF_DESCS_PER_LOOP_AVX */
730 nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, IAVF_DESCS_PER_LOOP_AVX);
732 /* See if we need to rearm the RX queue - gives the prefetch a bit
735 if (rxq->rxrearm_nb > IAVF_RXQ_REARM_THRESH)
738 /* Before we start moving massive data around, check to see if
739 * there is actually a packet available
741 if (!(rxdp->wb.status_error0 &
742 rte_cpu_to_le_32(1 << IAVF_RX_FLEX_DESC_STATUS0_DD_S)))
745 /* constants used in processing loop */
746 const __m512i crc_adjust =
748 (/* 1st descriptor */
749 0, /* ignore non-length fields */
750 -rxq->crc_len, /* sub crc on data_len */
751 -rxq->crc_len, /* sub crc on pkt_len */
752 0, /* ignore pkt_type field */
754 0, /* ignore non-length fields */
755 -rxq->crc_len, /* sub crc on data_len */
756 -rxq->crc_len, /* sub crc on pkt_len */
757 0, /* ignore pkt_type field */
759 0, /* ignore non-length fields */
760 -rxq->crc_len, /* sub crc on data_len */
761 -rxq->crc_len, /* sub crc on pkt_len */
762 0, /* ignore pkt_type field */
764 0, /* ignore non-length fields */
765 -rxq->crc_len, /* sub crc on data_len */
766 -rxq->crc_len, /* sub crc on pkt_len */
767 0 /* ignore pkt_type field */
770 /* 8 packets DD mask, LSB in each 32-bit value */
771 const __m256i dd_check = _mm256_set1_epi32(1);
773 /* 8 packets EOP mask, second-LSB in each 32-bit value */
774 const __m256i eop_check = _mm256_slli_epi32(dd_check,
775 IAVF_RX_FLEX_DESC_STATUS0_EOF_S);
777 /* mask to shuffle from desc. to mbuf (4 descriptors)*/
778 const __m512i shuf_msk =
780 (/* 1st descriptor */
781 0xFFFFFFFF, /* rss hash parsed separately */
782 0x0B0A0504, /* octet 10~11, 16 bits vlan_macip */
783 /* octet 4~5, 16 bits data_len */
784 0xFFFF0504, /* skip hi 16 bits pkt_len, zero out */
785 /* octet 4~5, 16 bits pkt_len */
786 0xFFFFFFFF, /* pkt_type set as unknown */
788 0xFFFFFFFF, /* rss hash parsed separately */
789 0x0B0A0504, /* octet 10~11, 16 bits vlan_macip */
790 /* octet 4~5, 16 bits data_len */
791 0xFFFF0504, /* skip hi 16 bits pkt_len, zero out */
792 /* octet 4~5, 16 bits pkt_len */
793 0xFFFFFFFF, /* pkt_type set as unknown */
795 0xFFFFFFFF, /* rss hash parsed separately */
796 0x0B0A0504, /* octet 10~11, 16 bits vlan_macip */
797 /* octet 4~5, 16 bits data_len */
798 0xFFFF0504, /* skip hi 16 bits pkt_len, zero out */
799 /* octet 4~5, 16 bits pkt_len */
800 0xFFFFFFFF, /* pkt_type set as unknown */
802 0xFFFFFFFF, /* rss hash parsed separately */
803 0x0B0A0504, /* octet 10~11, 16 bits vlan_macip */
804 /* octet 4~5, 16 bits data_len */
805 0xFFFF0504, /* skip hi 16 bits pkt_len, zero out */
806 /* octet 4~5, 16 bits pkt_len */
807 0xFFFFFFFF /* pkt_type set as unknown */
810 * compile-time check the above crc and shuffle layout is correct.
811 * NOTE: the first field (lowest address) is given last in set_epi
814 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
815 offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
816 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
817 offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
818 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, vlan_tci) !=
819 offsetof(struct rte_mbuf, rx_descriptor_fields1) + 10);
820 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, hash) !=
821 offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);
823 uint16_t i, received;
825 for (i = 0, received = 0; i < nb_pkts;
826 i += IAVF_DESCS_PER_LOOP_AVX,
827 rxdp += IAVF_DESCS_PER_LOOP_AVX) {
828 /* step 1, copy over 8 mbuf pointers to rx_pkts array */
829 _mm256_storeu_si256((void *)&rx_pkts[i],
830 _mm256_loadu_si256((void *)&sw_ring[i]));
831 #ifdef RTE_ARCH_X86_64
833 ((void *)&rx_pkts[i + 4],
834 _mm256_loadu_si256((void *)&sw_ring[i + 4]));
837 __m512i raw_desc0_3, raw_desc4_7;
839 const __m128i raw_desc7 =
840 _mm_load_si128((void *)(rxdp + 7));
841 rte_compiler_barrier();
842 const __m128i raw_desc6 =
843 _mm_load_si128((void *)(rxdp + 6));
844 rte_compiler_barrier();
845 const __m128i raw_desc5 =
846 _mm_load_si128((void *)(rxdp + 5));
847 rte_compiler_barrier();
848 const __m128i raw_desc4 =
849 _mm_load_si128((void *)(rxdp + 4));
850 rte_compiler_barrier();
851 const __m128i raw_desc3 =
852 _mm_load_si128((void *)(rxdp + 3));
853 rte_compiler_barrier();
854 const __m128i raw_desc2 =
855 _mm_load_si128((void *)(rxdp + 2));
856 rte_compiler_barrier();
857 const __m128i raw_desc1 =
858 _mm_load_si128((void *)(rxdp + 1));
859 rte_compiler_barrier();
860 const __m128i raw_desc0 =
861 _mm_load_si128((void *)(rxdp + 0));
863 raw_desc4_7 = _mm512_broadcast_i32x4(raw_desc4);
864 raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc5, 1);
865 raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc6, 2);
866 raw_desc4_7 = _mm512_inserti32x4(raw_desc4_7, raw_desc7, 3);
867 raw_desc0_3 = _mm512_broadcast_i32x4(raw_desc0);
868 raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc1, 1);
869 raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc2, 2);
870 raw_desc0_3 = _mm512_inserti32x4(raw_desc0_3, raw_desc3, 3);
875 for (j = 0; j < IAVF_DESCS_PER_LOOP_AVX; j++)
876 rte_mbuf_prefetch_part2(rx_pkts[i + j]);
880 * convert descriptors 4-7 into mbufs, re-arrange fields.
881 * Then write into the mbuf.
883 __m512i mb4_7 = _mm512_shuffle_epi8(raw_desc4_7, shuf_msk);
885 mb4_7 = _mm512_add_epi32(mb4_7, crc_adjust);
886 #ifdef IAVF_RX_PTYPE_OFFLOAD
888 * to get packet types, ptype is located in bit16-25
891 const __m512i ptype_mask =
892 _mm512_set1_epi16(IAVF_RX_FLEX_DESC_PTYPE_M);
893 const __m512i ptypes4_7 =
894 _mm512_and_si512(raw_desc4_7, ptype_mask);
895 const __m256i ptypes6_7 = _mm512_extracti64x4_epi64(ptypes4_7, 1);
896 const __m256i ptypes4_5 = _mm512_extracti64x4_epi64(ptypes4_7, 0);
897 const uint16_t ptype7 = _mm256_extract_epi16(ptypes6_7, 9);
898 const uint16_t ptype6 = _mm256_extract_epi16(ptypes6_7, 1);
899 const uint16_t ptype5 = _mm256_extract_epi16(ptypes4_5, 9);
900 const uint16_t ptype4 = _mm256_extract_epi16(ptypes4_5, 1);
902 const __m512i ptype4_7 = _mm512_set_epi32
903 (0, 0, 0, type_table[ptype7],
904 0, 0, 0, type_table[ptype6],
905 0, 0, 0, type_table[ptype5],
906 0, 0, 0, type_table[ptype4]);
907 mb4_7 = _mm512_mask_blend_epi32(0x1111, mb4_7, ptype4_7);
911 * convert descriptors 0-3 into mbufs, re-arrange fields.
912 * Then write into the mbuf.
914 __m512i mb0_3 = _mm512_shuffle_epi8(raw_desc0_3, shuf_msk);
916 mb0_3 = _mm512_add_epi32(mb0_3, crc_adjust);
917 #ifdef IAVF_RX_PTYPE_OFFLOAD
919 * to get packet types, ptype is located in bit16-25
922 const __m512i ptypes0_3 =
923 _mm512_and_si512(raw_desc0_3, ptype_mask);
924 const __m256i ptypes2_3 = _mm512_extracti64x4_epi64(ptypes0_3, 1);
925 const __m256i ptypes0_1 = _mm512_extracti64x4_epi64(ptypes0_3, 0);
926 const uint16_t ptype3 = _mm256_extract_epi16(ptypes2_3, 9);
927 const uint16_t ptype2 = _mm256_extract_epi16(ptypes2_3, 1);
928 const uint16_t ptype1 = _mm256_extract_epi16(ptypes0_1, 9);
929 const uint16_t ptype0 = _mm256_extract_epi16(ptypes0_1, 1);
931 const __m512i ptype0_3 = _mm512_set_epi32
932 (0, 0, 0, type_table[ptype3],
933 0, 0, 0, type_table[ptype2],
934 0, 0, 0, type_table[ptype1],
935 0, 0, 0, type_table[ptype0]);
936 mb0_3 = _mm512_mask_blend_epi32(0x1111, mb0_3, ptype0_3);
940 * use permute/extract to get status content
941 * After the operations, the packets status flags are in the
942 * order (hi->lo): [1, 3, 5, 7, 0, 2, 4, 6]
944 /* merge the status bits into one register */
945 const __m512i status_permute_msk = _mm512_set_epi32
950 const __m512i raw_status0_7 = _mm512_permutex2var_epi32
951 (raw_desc4_7, status_permute_msk, raw_desc0_3);
952 __m256i status0_7 = _mm512_extracti64x4_epi64
955 /* now do flag manipulation */
958 __m256i mbuf_flags = _mm256_set1_epi32(0);
959 __m256i vlan_flags = _mm256_setzero_si256();
962 #if defined(IAVF_RX_CSUM_OFFLOAD) || defined(IAVF_RX_VLAN_OFFLOAD) || defined(IAVF_RX_RSS_OFFLOAD)
963 /* Status/Error flag masks */
965 * mask everything except Checksum Reports, RSS indication
966 * and VLAN indication.
967 * bit6:4 for IP/L4 checksum errors.
968 * bit12 is for RSS indication.
969 * bit13 is for VLAN indication.
971 const __m256i flags_mask =
972 _mm256_set1_epi32((7 << 4) | (1 << 12) | (1 << 13));
974 #ifdef IAVF_RX_CSUM_OFFLOAD
976 * data to be shuffled by the result of the flags mask shifted by 4
977 * bits. This gives use the l3_l4 flags.
979 const __m256i l3_l4_flags_shuf = _mm256_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
980 /* shift right 1 bit to make sure it not exceed 255 */
981 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
982 RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
983 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
984 RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
985 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
986 RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
987 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
988 RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
989 (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
990 (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
991 (RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
992 (RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
993 /* second 128-bits */
994 0, 0, 0, 0, 0, 0, 0, 0,
995 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
996 RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
997 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
998 RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
999 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
1000 RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
1001 (RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD |
1002 RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
1003 (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
1004 (RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1,
1005 (RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD) >> 1,
1006 (RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_GOOD) >> 1);
1007 const __m256i cksum_mask =
1008 _mm256_set1_epi32(RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_BAD |
1009 RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_BAD |
1010 RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD);
1012 #if defined(IAVF_RX_VLAN_OFFLOAD) || defined(IAVF_RX_RSS_OFFLOAD)
1014 * data to be shuffled by result of flag mask, shifted down 12.
1015 * If RSS(bit12)/VLAN(bit13) are set,
1016 * shuffle moves appropriate flags in place.
1018 const __m256i rss_flags_shuf = _mm256_set_epi8
1022 RTE_MBUF_F_RX_RSS_HASH, 0,
1023 RTE_MBUF_F_RX_RSS_HASH, 0,
1024 /* end up 128-bits */
1028 RTE_MBUF_F_RX_RSS_HASH, 0,
1029 RTE_MBUF_F_RX_RSS_HASH, 0);
1031 const __m256i vlan_flags_shuf = _mm256_set_epi8
1035 RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
1036 RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
1038 /* end up 128-bits */
1042 RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
1043 RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_RX_VLAN_STRIPPED,
1047 #if defined(IAVF_RX_CSUM_OFFLOAD) || defined(IAVF_RX_VLAN_OFFLOAD) || defined(IAVF_RX_RSS_OFFLOAD)
1048 /* get only flag/error bits we want */
1049 const __m256i flag_bits =
1050 _mm256_and_si256(status0_7, flags_mask);
1052 #ifdef IAVF_RX_CSUM_OFFLOAD
1054 * l3_l4_error flags, shuffle, then shift to correct adjustment
1055 * of flags in flags_shuf, and finally mask out extra bits
1057 __m256i l3_l4_flags = _mm256_shuffle_epi8(l3_l4_flags_shuf,
1058 _mm256_srli_epi32(flag_bits, 4));
1059 l3_l4_flags = _mm256_slli_epi32(l3_l4_flags, 1);
1060 l3_l4_flags = _mm256_and_si256(l3_l4_flags, cksum_mask);
1062 #if defined(IAVF_RX_VLAN_OFFLOAD) || defined(IAVF_RX_RSS_OFFLOAD)
1063 /* set rss and vlan flags */
1064 const __m256i rss_vlan_flag_bits =
1065 _mm256_srli_epi32(flag_bits, 12);
1066 const __m256i rss_flags =
1067 _mm256_shuffle_epi8(rss_flags_shuf,
1068 rss_vlan_flag_bits);
1070 if (rxq->rx_flags == IAVF_RX_FLAGS_VLAN_TAG_LOC_L2TAG1)
1072 _mm256_shuffle_epi8(vlan_flags_shuf,
1073 rss_vlan_flag_bits);
1075 const __m256i rss_vlan_flags =
1076 _mm256_or_si256(rss_flags, vlan_flags);
1080 #ifdef IAVF_RX_CSUM_OFFLOAD
1081 mbuf_flags = _mm256_or_si256(mbuf_flags, l3_l4_flags);
1083 #if defined(IAVF_RX_VLAN_OFFLOAD) || defined(IAVF_RX_RSS_OFFLOAD)
1084 mbuf_flags = _mm256_or_si256(mbuf_flags, rss_vlan_flags);
1088 #ifdef IAVF_RX_FDIR_OFFLOAD
1089 if (rxq->fdir_enabled) {
1090 const __m512i fdir_permute_mask = _mm512_set_epi32
1095 __m512i fdir_tmp = _mm512_permutex2var_epi32
1096 (raw_desc0_3, fdir_permute_mask, raw_desc4_7);
1097 const __m256i fdir_id0_7 = _mm512_extracti64x4_epi64
1099 const __m256i fdir_flags =
1100 flex_rxd_to_fdir_flags_vec_avx512(fdir_id0_7);
1102 /* merge with fdir_flags */
1103 mbuf_flags = _mm256_or_si256(mbuf_flags, fdir_flags);
1105 /* write to mbuf: have to use scalar store here */
1106 rx_pkts[i + 0]->hash.fdir.hi =
1107 _mm256_extract_epi32(fdir_id0_7, 3);
1109 rx_pkts[i + 1]->hash.fdir.hi =
1110 _mm256_extract_epi32(fdir_id0_7, 7);
1112 rx_pkts[i + 2]->hash.fdir.hi =
1113 _mm256_extract_epi32(fdir_id0_7, 2);
1115 rx_pkts[i + 3]->hash.fdir.hi =
1116 _mm256_extract_epi32(fdir_id0_7, 6);
1118 rx_pkts[i + 4]->hash.fdir.hi =
1119 _mm256_extract_epi32(fdir_id0_7, 1);
1121 rx_pkts[i + 5]->hash.fdir.hi =
1122 _mm256_extract_epi32(fdir_id0_7, 5);
1124 rx_pkts[i + 6]->hash.fdir.hi =
1125 _mm256_extract_epi32(fdir_id0_7, 0);
1127 rx_pkts[i + 7]->hash.fdir.hi =
1128 _mm256_extract_epi32(fdir_id0_7, 4);
1129 } /* if() on fdir_enabled */
1132 __m256i mb4_5 = _mm512_extracti64x4_epi64(mb4_7, 0);
1133 __m256i mb6_7 = _mm512_extracti64x4_epi64(mb4_7, 1);
1134 __m256i mb0_1 = _mm512_extracti64x4_epi64(mb0_3, 0);
1135 __m256i mb2_3 = _mm512_extracti64x4_epi64(mb0_3, 1);
1137 #ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
1139 #ifdef IAVF_RX_RSS_OFFLOAD
1141 * needs to load 2nd 16B of each desc for RSS hash parsing,
1142 * will cause performance drop to get into this context.
1144 if (offloads & RTE_ETH_RX_OFFLOAD_RSS_HASH ||
1145 rxq->rx_flags & IAVF_RX_FLAGS_VLAN_TAG_LOC_L2TAG2_2) {
1146 /* load bottom half of every 32B desc */
1147 const __m128i raw_desc_bh7 =
1149 ((void *)(&rxdp[7].wb.status_error1));
1150 rte_compiler_barrier();
1151 const __m128i raw_desc_bh6 =
1153 ((void *)(&rxdp[6].wb.status_error1));
1154 rte_compiler_barrier();
1155 const __m128i raw_desc_bh5 =
1157 ((void *)(&rxdp[5].wb.status_error1));
1158 rte_compiler_barrier();
1159 const __m128i raw_desc_bh4 =
1161 ((void *)(&rxdp[4].wb.status_error1));
1162 rte_compiler_barrier();
1163 const __m128i raw_desc_bh3 =
1165 ((void *)(&rxdp[3].wb.status_error1));
1166 rte_compiler_barrier();
1167 const __m128i raw_desc_bh2 =
1169 ((void *)(&rxdp[2].wb.status_error1));
1170 rte_compiler_barrier();
1171 const __m128i raw_desc_bh1 =
1173 ((void *)(&rxdp[1].wb.status_error1));
1174 rte_compiler_barrier();
1175 const __m128i raw_desc_bh0 =
1177 ((void *)(&rxdp[0].wb.status_error1));
1179 __m256i raw_desc_bh6_7 =
1180 _mm256_inserti128_si256
1181 (_mm256_castsi128_si256(raw_desc_bh6),
1183 __m256i raw_desc_bh4_5 =
1184 _mm256_inserti128_si256
1185 (_mm256_castsi128_si256(raw_desc_bh4),
1187 __m256i raw_desc_bh2_3 =
1188 _mm256_inserti128_si256
1189 (_mm256_castsi128_si256(raw_desc_bh2),
1191 __m256i raw_desc_bh0_1 =
1192 _mm256_inserti128_si256
1193 (_mm256_castsi128_si256(raw_desc_bh0),
1196 if (offloads & RTE_ETH_RX_OFFLOAD_RSS_HASH) {
1198 * to shift the 32b RSS hash value to the
1199 * highest 32b of each 128b before mask
1201 __m256i rss_hash6_7 =
1203 (raw_desc_bh6_7, 32);
1204 __m256i rss_hash4_5 =
1206 (raw_desc_bh4_5, 32);
1207 __m256i rss_hash2_3 =
1209 (raw_desc_bh2_3, 32);
1210 __m256i rss_hash0_1 =
1212 (raw_desc_bh0_1, 32);
1214 const __m256i rss_hash_msk =
1216 (0xFFFFFFFF, 0, 0, 0,
1217 0xFFFFFFFF, 0, 0, 0);
1219 rss_hash6_7 = _mm256_and_si256
1220 (rss_hash6_7, rss_hash_msk);
1221 rss_hash4_5 = _mm256_and_si256
1222 (rss_hash4_5, rss_hash_msk);
1223 rss_hash2_3 = _mm256_and_si256
1224 (rss_hash2_3, rss_hash_msk);
1225 rss_hash0_1 = _mm256_and_si256
1226 (rss_hash0_1, rss_hash_msk);
1228 mb6_7 = _mm256_or_si256
1229 (mb6_7, rss_hash6_7);
1230 mb4_5 = _mm256_or_si256
1231 (mb4_5, rss_hash4_5);
1232 mb2_3 = _mm256_or_si256
1233 (mb2_3, rss_hash2_3);
1234 mb0_1 = _mm256_or_si256
1235 (mb0_1, rss_hash0_1);
1238 if (rxq->rx_flags & IAVF_RX_FLAGS_VLAN_TAG_LOC_L2TAG2_2) {
1239 /* merge the status/error-1 bits into one register */
1240 const __m256i status1_4_7 =
1241 _mm256_unpacklo_epi32
1244 const __m256i status1_0_3 =
1245 _mm256_unpacklo_epi32
1249 const __m256i status1_0_7 =
1250 _mm256_unpacklo_epi64
1251 (status1_4_7, status1_0_3);
1253 const __m256i l2tag2p_flag_mask =
1255 (1 << IAVF_RX_FLEX_DESC_STATUS1_L2TAG2P_S);
1257 __m256i l2tag2p_flag_bits =
1265 IAVF_RX_FLEX_DESC_STATUS1_L2TAG2P_S);
1267 const __m256i l2tag2_flags_shuf =
1273 /* end up 128-bits */
1278 RTE_MBUF_F_RX_VLAN |
1279 RTE_MBUF_F_RX_VLAN_STRIPPED,
1287 /* merge with vlan_flags */
1288 mbuf_flags = _mm256_or_si256
1293 __m256i vlan_tci6_7 =
1295 (raw_desc_bh6_7, 4);
1296 __m256i vlan_tci4_5 =
1298 (raw_desc_bh4_5, 4);
1299 __m256i vlan_tci2_3 =
1301 (raw_desc_bh2_3, 4);
1302 __m256i vlan_tci0_1 =
1304 (raw_desc_bh0_1, 4);
1306 const __m256i vlan_tci_msk =
1308 (0, 0xFFFF0000, 0, 0,
1309 0, 0xFFFF0000, 0, 0);
1311 vlan_tci6_7 = _mm256_and_si256
1314 vlan_tci4_5 = _mm256_and_si256
1317 vlan_tci2_3 = _mm256_and_si256
1320 vlan_tci0_1 = _mm256_and_si256
1324 mb6_7 = _mm256_or_si256
1325 (mb6_7, vlan_tci6_7);
1326 mb4_5 = _mm256_or_si256
1327 (mb4_5, vlan_tci4_5);
1328 mb2_3 = _mm256_or_si256
1329 (mb2_3, vlan_tci2_3);
1330 mb0_1 = _mm256_or_si256
1331 (mb0_1, vlan_tci0_1);
1333 } /* if() on RSS hash parsing */
1339 * At this point, we have the 8 sets of flags in the low 16-bits
1340 * of each 32-bit value in vlan0.
1341 * We want to extract these, and merge them with the mbuf init
1342 * data so we can do a single write to the mbuf to set the flags
1343 * and all the other initialization fields. Extracting the
1344 * appropriate flags means that we have to do a shift and blend
1345 * for each mbuf before we do the write. However, we can also
1346 * add in the previously computed rx_descriptor fields to
1347 * make a single 256-bit write per mbuf
1349 /* check the structure matches expectations */
1350 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
1351 offsetof(struct rte_mbuf, rearm_data) + 8);
1352 RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, rearm_data) !=
1353 RTE_ALIGN(offsetof(struct rte_mbuf,
1356 /* build up data and do writes */
1357 __m256i rearm0, rearm1, rearm2, rearm3, rearm4, rearm5,
1359 rearm6 = _mm256_blend_epi32(mbuf_init,
1360 _mm256_slli_si256(mbuf_flags, 8),
1362 rearm4 = _mm256_blend_epi32(mbuf_init,
1363 _mm256_slli_si256(mbuf_flags, 4),
1365 rearm2 = _mm256_blend_epi32(mbuf_init, mbuf_flags, 0x04);
1366 rearm0 = _mm256_blend_epi32(mbuf_init,
1367 _mm256_srli_si256(mbuf_flags, 4),
1369 /* permute to add in the rx_descriptor e.g. rss fields */
1370 rearm6 = _mm256_permute2f128_si256(rearm6, mb6_7, 0x20);
1371 rearm4 = _mm256_permute2f128_si256(rearm4, mb4_5, 0x20);
1372 rearm2 = _mm256_permute2f128_si256(rearm2, mb2_3, 0x20);
1373 rearm0 = _mm256_permute2f128_si256(rearm0, mb0_1, 0x20);
1375 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 6]->rearm_data,
1377 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 4]->rearm_data,
1379 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 2]->rearm_data,
1381 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 0]->rearm_data,
1384 /* repeat for the odd mbufs */
1385 const __m256i odd_flags =
1386 _mm256_castsi128_si256
1387 (_mm256_extracti128_si256(mbuf_flags, 1));
1388 rearm7 = _mm256_blend_epi32(mbuf_init,
1389 _mm256_slli_si256(odd_flags, 8),
1391 rearm5 = _mm256_blend_epi32(mbuf_init,
1392 _mm256_slli_si256(odd_flags, 4),
1394 rearm3 = _mm256_blend_epi32(mbuf_init, odd_flags, 0x04);
1395 rearm1 = _mm256_blend_epi32(mbuf_init,
1396 _mm256_srli_si256(odd_flags, 4),
1398 /* since odd mbufs are already in hi 128-bits use blend */
1399 rearm7 = _mm256_blend_epi32(rearm7, mb6_7, 0xF0);
1400 rearm5 = _mm256_blend_epi32(rearm5, mb4_5, 0xF0);
1401 rearm3 = _mm256_blend_epi32(rearm3, mb2_3, 0xF0);
1402 rearm1 = _mm256_blend_epi32(rearm1, mb0_1, 0xF0);
1403 /* again write to mbufs */
1404 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 7]->rearm_data,
1406 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 5]->rearm_data,
1408 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 3]->rearm_data,
1410 _mm256_storeu_si256((__m256i *)&rx_pkts[i + 1]->rearm_data,
1413 /* extract and record EOP bit */
1415 const __m128i eop_mask =
1417 IAVF_RX_FLEX_DESC_STATUS0_EOF_S);
1418 const __m256i eop_bits256 = _mm256_and_si256(status0_7,
1420 /* pack status bits into a single 128-bit register */
1421 const __m128i eop_bits =
1423 (_mm256_castsi256_si128(eop_bits256),
1424 _mm256_extractf128_si256(eop_bits256,
1427 * flip bits, and mask out the EOP bit, which is now
1428 * a split-packet bit i.e. !EOP, rather than EOP one.
1430 __m128i split_bits = _mm_andnot_si128(eop_bits,
1433 * eop bits are out of order, so we need to shuffle them
1434 * back into order again. In doing so, only use low 8
1435 * bits, which acts like another pack instruction
1436 * The original order is (hi->lo): 1,3,5,7,0,2,4,6
1437 * [Since we use epi8, the 16-bit positions are
1438 * multiplied by 2 in the eop_shuffle value.]
1440 __m128i eop_shuffle =
1441 _mm_set_epi8(/* zero hi 64b */
1442 0xFF, 0xFF, 0xFF, 0xFF,
1443 0xFF, 0xFF, 0xFF, 0xFF,
1444 /* move values to lo 64b */
1447 split_bits = _mm_shuffle_epi8(split_bits, eop_shuffle);
1448 *(uint64_t *)split_packet =
1449 _mm_cvtsi128_si64(split_bits);
1450 split_packet += IAVF_DESCS_PER_LOOP_AVX;
1453 /* perform dd_check */
1454 status0_7 = _mm256_and_si256(status0_7, dd_check);
1455 status0_7 = _mm256_packs_epi32(status0_7,
1456 _mm256_setzero_si256());
1458 uint64_t burst = __builtin_popcountll
1460 (_mm256_extracti128_si256
1462 burst += __builtin_popcountll
1464 (_mm256_castsi256_si128(status0_7)));
1466 if (burst != IAVF_DESCS_PER_LOOP_AVX)
1470 /* update tail pointers */
1471 rxq->rx_tail += received;
1472 rxq->rx_tail &= (rxq->nb_rx_desc - 1);
1473 if ((rxq->rx_tail & 1) == 1 && received > 1) { /* keep aligned */
1477 rxq->rxrearm_nb += received;
1483 * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
1486 iavf_recv_pkts_vec_avx512(void *rx_queue, struct rte_mbuf **rx_pkts,
1489 return _iavf_recv_raw_pkts_vec_avx512(rx_queue, rx_pkts, nb_pkts,
1495 * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
1498 iavf_recv_pkts_vec_avx512_flex_rxd(void *rx_queue, struct rte_mbuf **rx_pkts,
1501 return _iavf_recv_raw_pkts_vec_avx512_flex_rxd(rx_queue, rx_pkts,
1502 nb_pkts, NULL, false);
1506 * vPMD receive routine that reassembles single burst of 32 scattered packets
1508 * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
1510 static __rte_always_inline uint16_t
1511 iavf_recv_scattered_burst_vec_avx512(void *rx_queue, struct rte_mbuf **rx_pkts,
1512 uint16_t nb_pkts, bool offload)
1514 struct iavf_rx_queue *rxq = rx_queue;
1515 uint8_t split_flags[IAVF_VPMD_RX_MAX_BURST] = {0};
1517 /* get some new buffers */
1518 uint16_t nb_bufs = _iavf_recv_raw_pkts_vec_avx512(rxq, rx_pkts, nb_pkts,
1519 split_flags, offload);
1523 /* happy day case, full burst + no packets to be joined */
1524 const uint64_t *split_fl64 = (uint64_t *)split_flags;
1526 if (!rxq->pkt_first_seg &&
1527 split_fl64[0] == 0 && split_fl64[1] == 0 &&
1528 split_fl64[2] == 0 && split_fl64[3] == 0)
1531 /* reassemble any packets that need reassembly*/
1534 if (!rxq->pkt_first_seg) {
1535 /* find the first split flag, and only reassemble then*/
1536 while (i < nb_bufs && !split_flags[i])
1540 rxq->pkt_first_seg = rx_pkts[i];
1542 return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
1547 * vPMD receive routine that reassembles scattered packets.
1548 * Main receive routine that can handle arbitrary burst sizes
1550 * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
1552 static __rte_always_inline uint16_t
1553 iavf_recv_scattered_pkts_vec_avx512_cmn(void *rx_queue, struct rte_mbuf **rx_pkts,
1554 uint16_t nb_pkts, bool offload)
1556 uint16_t retval = 0;
1558 while (nb_pkts > IAVF_VPMD_RX_MAX_BURST) {
1559 uint16_t burst = iavf_recv_scattered_burst_vec_avx512(rx_queue,
1560 rx_pkts + retval, IAVF_VPMD_RX_MAX_BURST, offload);
1563 if (burst < IAVF_VPMD_RX_MAX_BURST)
1566 return retval + iavf_recv_scattered_burst_vec_avx512(rx_queue,
1567 rx_pkts + retval, nb_pkts, offload);
1571 iavf_recv_scattered_pkts_vec_avx512(void *rx_queue, struct rte_mbuf **rx_pkts,
1574 return iavf_recv_scattered_pkts_vec_avx512_cmn(rx_queue, rx_pkts,
1579 * vPMD receive routine that reassembles single burst of
1580 * 32 scattered packets for flex RxD
1582 * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
1584 static __rte_always_inline uint16_t
1585 iavf_recv_scattered_burst_vec_avx512_flex_rxd(void *rx_queue,
1586 struct rte_mbuf **rx_pkts,
1590 struct iavf_rx_queue *rxq = rx_queue;
1591 uint8_t split_flags[IAVF_VPMD_RX_MAX_BURST] = {0};
1593 /* get some new buffers */
1594 uint16_t nb_bufs = _iavf_recv_raw_pkts_vec_avx512_flex_rxd(rxq,
1595 rx_pkts, nb_pkts, split_flags, offload);
1599 /* happy day case, full burst + no packets to be joined */
1600 const uint64_t *split_fl64 = (uint64_t *)split_flags;
1602 if (!rxq->pkt_first_seg &&
1603 split_fl64[0] == 0 && split_fl64[1] == 0 &&
1604 split_fl64[2] == 0 && split_fl64[3] == 0)
1607 /* reassemble any packets that need reassembly*/
1610 if (!rxq->pkt_first_seg) {
1611 /* find the first split flag, and only reassemble then*/
1612 while (i < nb_bufs && !split_flags[i])
1616 rxq->pkt_first_seg = rx_pkts[i];
1618 return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
1623 * vPMD receive routine that reassembles scattered packets for flex RxD.
1624 * Main receive routine that can handle arbitrary burst sizes
1626 * - nb_pkts < IAVF_DESCS_PER_LOOP, just return no packet
1628 static __rte_always_inline uint16_t
1629 iavf_recv_scattered_pkts_vec_avx512_flex_rxd_cmn(void *rx_queue,
1630 struct rte_mbuf **rx_pkts,
1634 uint16_t retval = 0;
1636 while (nb_pkts > IAVF_VPMD_RX_MAX_BURST) {
1638 iavf_recv_scattered_burst_vec_avx512_flex_rxd
1639 (rx_queue, rx_pkts + retval,
1640 IAVF_VPMD_RX_MAX_BURST, offload);
1643 if (burst < IAVF_VPMD_RX_MAX_BURST)
1646 return retval + iavf_recv_scattered_burst_vec_avx512_flex_rxd(rx_queue,
1647 rx_pkts + retval, nb_pkts, offload);
1651 iavf_recv_scattered_pkts_vec_avx512_flex_rxd(void *rx_queue,
1652 struct rte_mbuf **rx_pkts,
1655 return iavf_recv_scattered_pkts_vec_avx512_flex_rxd_cmn(rx_queue,
1662 iavf_recv_pkts_vec_avx512_offload(void *rx_queue, struct rte_mbuf **rx_pkts,
1665 return _iavf_recv_raw_pkts_vec_avx512(rx_queue, rx_pkts,
1666 nb_pkts, NULL, true);
1670 iavf_recv_scattered_pkts_vec_avx512_offload(void *rx_queue,
1671 struct rte_mbuf **rx_pkts,
1674 return iavf_recv_scattered_pkts_vec_avx512_cmn(rx_queue, rx_pkts,
1679 iavf_recv_pkts_vec_avx512_flex_rxd_offload(void *rx_queue,
1680 struct rte_mbuf **rx_pkts,
1683 return _iavf_recv_raw_pkts_vec_avx512_flex_rxd(rx_queue,
1691 iavf_recv_scattered_pkts_vec_avx512_flex_rxd_offload(void *rx_queue,
1692 struct rte_mbuf **rx_pkts,
1695 return iavf_recv_scattered_pkts_vec_avx512_flex_rxd_cmn(rx_queue,
1701 static __rte_always_inline int
1702 iavf_tx_free_bufs_avx512(struct iavf_tx_queue *txq)
1704 struct iavf_tx_vec_entry *txep;
1708 struct rte_mbuf *m, *free[IAVF_VPMD_TX_MAX_FREE_BUF];
1710 /* check DD bits on threshold descriptor */
1711 if ((txq->tx_ring[txq->next_dd].cmd_type_offset_bsz &
1712 rte_cpu_to_le_64(IAVF_TXD_QW1_DTYPE_MASK)) !=
1713 rte_cpu_to_le_64(IAVF_TX_DESC_DTYPE_DESC_DONE))
1718 /* first buffer to free from S/W ring is at index
1719 * tx_next_dd - (tx_rs_thresh-1)
1721 txep = (void *)txq->sw_ring;
1722 txep += txq->next_dd - (n - 1);
1724 if (txq->offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE && (n & 31) == 0) {
1725 struct rte_mempool *mp = txep[0].mbuf->pool;
1726 struct rte_mempool_cache *cache = rte_mempool_default_cache(mp,
1730 if (!cache || cache->len == 0)
1733 cache_objs = &cache->objs[cache->len];
1735 if (n > RTE_MEMPOOL_CACHE_MAX_SIZE) {
1736 rte_mempool_ops_enqueue_bulk(mp, (void *)txep, n);
1740 /* The cache follows the following algorithm
1741 * 1. Add the objects to the cache
1742 * 2. Anything greater than the cache min value (if it crosses the
1743 * cache flush threshold) is flushed to the ring.
1745 /* Add elements back into the cache */
1746 uint32_t copied = 0;
1747 /* n is multiple of 32 */
1748 while (copied < n) {
1749 const __m512i a = _mm512_loadu_si512(&txep[copied]);
1750 const __m512i b = _mm512_loadu_si512(&txep[copied + 8]);
1751 const __m512i c = _mm512_loadu_si512(&txep[copied + 16]);
1752 const __m512i d = _mm512_loadu_si512(&txep[copied + 24]);
1754 _mm512_storeu_si512(&cache_objs[copied], a);
1755 _mm512_storeu_si512(&cache_objs[copied + 8], b);
1756 _mm512_storeu_si512(&cache_objs[copied + 16], c);
1757 _mm512_storeu_si512(&cache_objs[copied + 24], d);
1762 if (cache->len >= cache->flushthresh) {
1763 rte_mempool_ops_enqueue_bulk(mp,
1764 &cache->objs[cache->size],
1765 cache->len - cache->size);
1766 cache->len = cache->size;
1772 m = rte_pktmbuf_prefree_seg(txep[0].mbuf);
1776 for (i = 1; i < n; i++) {
1777 m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
1779 if (likely(m->pool == free[0]->pool)) {
1780 free[nb_free++] = m;
1782 rte_mempool_put_bulk(free[0]->pool,
1790 rte_mempool_put_bulk(free[0]->pool, (void **)free, nb_free);
1792 for (i = 1; i < n; i++) {
1793 m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
1795 rte_mempool_put(m->pool, m);
1800 /* buffers were freed, update counters */
1801 txq->nb_free = (uint16_t)(txq->nb_free + txq->rs_thresh);
1802 txq->next_dd = (uint16_t)(txq->next_dd + txq->rs_thresh);
1803 if (txq->next_dd >= txq->nb_tx_desc)
1804 txq->next_dd = (uint16_t)(txq->rs_thresh - 1);
1806 return txq->rs_thresh;
1809 static __rte_always_inline void
1810 tx_backlog_entry_avx512(struct iavf_tx_vec_entry *txep,
1811 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
1815 for (i = 0; i < (int)nb_pkts; ++i)
1816 txep[i].mbuf = tx_pkts[i];
1819 static __rte_always_inline void
1820 iavf_vtx1(volatile struct iavf_tx_desc *txdp,
1821 struct rte_mbuf *pkt, uint64_t flags, bool offload)
1824 (IAVF_TX_DESC_DTYPE_DATA |
1825 ((uint64_t)flags << IAVF_TXD_QW1_CMD_SHIFT) |
1826 ((uint64_t)pkt->data_len << IAVF_TXD_QW1_TX_BUF_SZ_SHIFT));
1828 iavf_txd_enable_offload(pkt, &high_qw);
1830 __m128i descriptor = _mm_set_epi64x(high_qw,
1831 pkt->buf_iova + pkt->data_off);
1832 _mm_storeu_si128((__m128i *)txdp, descriptor);
1835 #define IAVF_TX_LEN_MASK 0xAA
1836 #define IAVF_TX_OFF_MASK 0x55
1837 static __rte_always_inline void
1838 iavf_vtx(volatile struct iavf_tx_desc *txdp,
1839 struct rte_mbuf **pkt, uint16_t nb_pkts, uint64_t flags,
1842 const uint64_t hi_qw_tmpl = (IAVF_TX_DESC_DTYPE_DATA |
1843 ((uint64_t)flags << IAVF_TXD_QW1_CMD_SHIFT));
1845 /* if unaligned on 32-bit boundary, do one to align */
1846 if (((uintptr_t)txdp & 0x1F) != 0 && nb_pkts != 0) {
1847 iavf_vtx1(txdp, *pkt, flags, offload);
1848 nb_pkts--, txdp++, pkt++;
1851 /* do 4 at a time while possible, in bursts */
1852 for (; nb_pkts > 3; txdp += 4, pkt += 4, nb_pkts -= 4) {
1855 ((uint64_t)pkt[3]->data_len <<
1856 IAVF_TXD_QW1_TX_BUF_SZ_SHIFT);
1858 iavf_txd_enable_offload(pkt[3], &hi_qw3);
1861 ((uint64_t)pkt[2]->data_len <<
1862 IAVF_TXD_QW1_TX_BUF_SZ_SHIFT);
1864 iavf_txd_enable_offload(pkt[2], &hi_qw2);
1867 ((uint64_t)pkt[1]->data_len <<
1868 IAVF_TXD_QW1_TX_BUF_SZ_SHIFT);
1870 iavf_txd_enable_offload(pkt[1], &hi_qw1);
1873 ((uint64_t)pkt[0]->data_len <<
1874 IAVF_TXD_QW1_TX_BUF_SZ_SHIFT);
1876 iavf_txd_enable_offload(pkt[0], &hi_qw0);
1881 pkt[3]->buf_iova + pkt[3]->data_off,
1883 pkt[2]->buf_iova + pkt[2]->data_off,
1885 pkt[1]->buf_iova + pkt[1]->data_off,
1887 pkt[0]->buf_iova + pkt[0]->data_off);
1888 _mm512_storeu_si512((void *)txdp, desc0_3);
1891 /* do any last ones */
1893 iavf_vtx1(txdp, *pkt, flags, offload);
1894 txdp++, pkt++, nb_pkts--;
1898 static __rte_always_inline uint16_t
1899 iavf_xmit_fixed_burst_vec_avx512(void *tx_queue, struct rte_mbuf **tx_pkts,
1900 uint16_t nb_pkts, bool offload)
1902 struct iavf_tx_queue *txq = (struct iavf_tx_queue *)tx_queue;
1903 volatile struct iavf_tx_desc *txdp;
1904 struct iavf_tx_vec_entry *txep;
1905 uint16_t n, nb_commit, tx_id;
1906 /* bit2 is reserved and must be set to 1 according to Spec */
1907 uint64_t flags = IAVF_TX_DESC_CMD_EOP | IAVF_TX_DESC_CMD_ICRC;
1908 uint64_t rs = IAVF_TX_DESC_CMD_RS | flags;
1910 if (txq->nb_free < txq->free_thresh)
1911 iavf_tx_free_bufs_avx512(txq);
1913 nb_commit = nb_pkts = (uint16_t)RTE_MIN(txq->nb_free, nb_pkts);
1914 if (unlikely(nb_pkts == 0))
1917 tx_id = txq->tx_tail;
1918 txdp = &txq->tx_ring[tx_id];
1919 txep = (void *)txq->sw_ring;
1922 txq->nb_free = (uint16_t)(txq->nb_free - nb_pkts);
1924 n = (uint16_t)(txq->nb_tx_desc - tx_id);
1925 if (nb_commit >= n) {
1926 tx_backlog_entry_avx512(txep, tx_pkts, n);
1928 iavf_vtx(txdp, tx_pkts, n - 1, flags, offload);
1932 iavf_vtx1(txdp, *tx_pkts++, rs, offload);
1934 nb_commit = (uint16_t)(nb_commit - n);
1937 txq->next_rs = (uint16_t)(txq->rs_thresh - 1);
1939 /* avoid reach the end of ring */
1940 txdp = &txq->tx_ring[tx_id];
1941 txep = (void *)txq->sw_ring;
1945 tx_backlog_entry_avx512(txep, tx_pkts, nb_commit);
1947 iavf_vtx(txdp, tx_pkts, nb_commit, flags, offload);
1949 tx_id = (uint16_t)(tx_id + nb_commit);
1950 if (tx_id > txq->next_rs) {
1951 txq->tx_ring[txq->next_rs].cmd_type_offset_bsz |=
1952 rte_cpu_to_le_64(((uint64_t)IAVF_TX_DESC_CMD_RS) <<
1953 IAVF_TXD_QW1_CMD_SHIFT);
1955 (uint16_t)(txq->next_rs + txq->rs_thresh);
1958 txq->tx_tail = tx_id;
1960 IAVF_PCI_REG_WC_WRITE(txq->qtx_tail, txq->tx_tail);
1965 static __rte_always_inline uint16_t
1966 iavf_xmit_pkts_vec_avx512_cmn(void *tx_queue, struct rte_mbuf **tx_pkts,
1967 uint16_t nb_pkts, bool offload)
1970 struct iavf_tx_queue *txq = (struct iavf_tx_queue *)tx_queue;
1975 /* cross rs_thresh boundary is not allowed */
1976 num = (uint16_t)RTE_MIN(nb_pkts, txq->rs_thresh);
1977 ret = iavf_xmit_fixed_burst_vec_avx512(tx_queue, &tx_pkts[nb_tx],
1989 iavf_xmit_pkts_vec_avx512(void *tx_queue, struct rte_mbuf **tx_pkts,
1992 return iavf_xmit_pkts_vec_avx512_cmn(tx_queue, tx_pkts, nb_pkts, false);
1996 iavf_tx_queue_release_mbufs_avx512(struct iavf_tx_queue *txq)
1999 const uint16_t max_desc = (uint16_t)(txq->nb_tx_desc - 1);
2000 struct iavf_tx_vec_entry *swr = (void *)txq->sw_ring;
2002 if (!txq->sw_ring || txq->nb_free == max_desc)
2005 i = txq->next_dd - txq->rs_thresh + 1;
2006 if (txq->tx_tail < i) {
2007 for (; i < txq->nb_tx_desc; i++) {
2008 rte_pktmbuf_free_seg(swr[i].mbuf);
2016 iavf_txq_vec_setup_avx512(struct iavf_tx_queue *txq)
2018 txq->rel_mbufs_type = IAVF_REL_MBUFS_AVX512_VEC;
2023 iavf_xmit_pkts_vec_avx512_offload(void *tx_queue, struct rte_mbuf **tx_pkts,
2026 return iavf_xmit_pkts_vec_avx512_cmn(tx_queue, tx_pkts, nb_pkts, true);