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35 #include <rte_ethdev.h>
36 #include <rte_malloc.h>
38 #include "base/i40e_prototype.h"
39 #include "base/i40e_type.h"
40 #include "i40e_ethdev.h"
41 #include "i40e_rxtx.h"
43 #include <tmmintrin.h>
45 #ifndef __INTEL_COMPILER
46 #pragma GCC diagnostic ignored "-Wcast-qual"
50 i40e_rxq_rearm(struct i40e_rx_queue *rxq)
54 volatile union i40e_rx_desc *rxdp;
55 struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
56 struct rte_mbuf *mb0, *mb1;
57 __m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM,
58 RTE_PKTMBUF_HEADROOM);
59 __m128i dma_addr0, dma_addr1;
61 rxdp = rxq->rx_ring + rxq->rxrearm_start;
63 /* Pull 'n' more MBUFs into the software ring */
64 if (rte_mempool_get_bulk(rxq->mp,
66 RTE_I40E_RXQ_REARM_THRESH) < 0) {
67 if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >=
69 dma_addr0 = _mm_setzero_si128();
70 for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) {
71 rxep[i].mbuf = &rxq->fake_mbuf;
72 _mm_store_si128((__m128i *)&rxdp[i].read,
76 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
77 RTE_I40E_RXQ_REARM_THRESH;
81 /* Initialize the mbufs in vector, process 2 mbufs in one loop */
82 for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) {
83 __m128i vaddr0, vaddr1;
89 /* Flush mbuf with pkt template.
90 * Data to be rearmed is 6 bytes long.
91 * Though, RX will overwrite ol_flags that are coming next
92 * anyway. So overwrite whole 8 bytes with one load:
93 * 6 bytes of rearm_data plus first 2 bytes of ol_flags.
95 p0 = (uintptr_t)&mb0->rearm_data;
96 *(uint64_t *)p0 = rxq->mbuf_initializer;
97 p1 = (uintptr_t)&mb1->rearm_data;
98 *(uint64_t *)p1 = rxq->mbuf_initializer;
100 /* load buf_addr(lo 64bit) and buf_physaddr(hi 64bit) */
101 vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr);
102 vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr);
104 /* convert pa to dma_addr hdr/data */
105 dma_addr0 = _mm_unpackhi_epi64(vaddr0, vaddr0);
106 dma_addr1 = _mm_unpackhi_epi64(vaddr1, vaddr1);
108 /* add headroom to pa values */
109 dma_addr0 = _mm_add_epi64(dma_addr0, hdr_room);
110 dma_addr1 = _mm_add_epi64(dma_addr1, hdr_room);
112 /* flush desc with pa dma_addr */
113 _mm_store_si128((__m128i *)&rxdp++->read, dma_addr0);
114 _mm_store_si128((__m128i *)&rxdp++->read, dma_addr1);
117 rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH;
118 if (rxq->rxrearm_start >= rxq->nb_rx_desc)
119 rxq->rxrearm_start = 0;
121 rxq->rxrearm_nb -= RTE_I40E_RXQ_REARM_THRESH;
123 rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
124 (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
126 /* Update the tail pointer on the NIC */
127 I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
130 /* Handling the offload flags (olflags) field takes computation
131 * time when receiving packets. Therefore we provide a flag to disable
132 * the processing of the olflags field when they are not needed. This
133 * gives improved performance, at the cost of losing the offload info
134 * in the received packet
136 #ifdef RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE
139 desc_to_olflags_v(__m128i descs[4], struct rte_mbuf **rx_pkts)
141 __m128i vlan0, vlan1, rss, l3_l4e;
143 /* mask everything except RSS, flow director and VLAN flags
144 * bit2 is for VLAN tag, bit11 for flow director indication
145 * bit13:12 for RSS indication.
147 const __m128i rss_vlan_msk = _mm_set_epi32(
148 0x1c03804, 0x1c03804, 0x1c03804, 0x1c03804);
150 /* map rss and vlan type to rss hash and vlan flag */
151 const __m128i vlan_flags = _mm_set_epi8(0, 0, 0, 0,
153 0, 0, 0, PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED,
156 const __m128i rss_flags = _mm_set_epi8(0, 0, 0, 0,
158 PKT_RX_RSS_HASH | PKT_RX_FDIR, PKT_RX_RSS_HASH, 0, 0,
159 0, 0, PKT_RX_FDIR, 0);
161 const __m128i l3_l4e_flags = _mm_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
162 PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD,
163 PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD,
164 PKT_RX_EIP_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD,
165 PKT_RX_EIP_CKSUM_BAD,
166 PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD,
171 vlan0 = _mm_unpackhi_epi32(descs[0], descs[1]);
172 vlan1 = _mm_unpackhi_epi32(descs[2], descs[3]);
173 vlan0 = _mm_unpacklo_epi64(vlan0, vlan1);
175 vlan1 = _mm_and_si128(vlan0, rss_vlan_msk);
176 vlan0 = _mm_shuffle_epi8(vlan_flags, vlan1);
178 rss = _mm_srli_epi32(vlan1, 11);
179 rss = _mm_shuffle_epi8(rss_flags, rss);
181 l3_l4e = _mm_srli_epi32(vlan1, 22);
182 l3_l4e = _mm_shuffle_epi8(l3_l4e_flags, l3_l4e);
184 vlan0 = _mm_or_si128(vlan0, rss);
185 vlan0 = _mm_or_si128(vlan0, l3_l4e);
187 rx_pkts[0]->ol_flags = _mm_extract_epi16(vlan0, 0);
188 rx_pkts[1]->ol_flags = _mm_extract_epi16(vlan0, 2);
189 rx_pkts[2]->ol_flags = _mm_extract_epi16(vlan0, 4);
190 rx_pkts[3]->ol_flags = _mm_extract_epi16(vlan0, 6);
193 #define desc_to_olflags_v(desc, rx_pkts) do {} while (0)
196 #define PKTLEN_SHIFT 10
199 desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts)
201 __m128i ptype0 = _mm_unpackhi_epi64(descs[0], descs[1]);
202 __m128i ptype1 = _mm_unpackhi_epi64(descs[2], descs[3]);
204 ptype0 = _mm_srli_epi64(ptype0, 30);
205 ptype1 = _mm_srli_epi64(ptype1, 30);
207 rx_pkts[0]->packet_type = i40e_rxd_pkt_type_mapping(_mm_extract_epi8(ptype0, 0));
208 rx_pkts[1]->packet_type = i40e_rxd_pkt_type_mapping(_mm_extract_epi8(ptype0, 8));
209 rx_pkts[2]->packet_type = i40e_rxd_pkt_type_mapping(_mm_extract_epi8(ptype1, 0));
210 rx_pkts[3]->packet_type = i40e_rxd_pkt_type_mapping(_mm_extract_epi8(ptype1, 8));
215 * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
216 * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
219 static inline uint16_t
220 _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
221 uint16_t nb_pkts, uint8_t *split_packet)
223 volatile union i40e_rx_desc *rxdp;
224 struct i40e_rx_entry *sw_ring;
225 uint16_t nb_pkts_recd;
230 __m128i crc_adjust = _mm_set_epi16(
231 0, 0, 0, /* ignore non-length fields */
232 -rxq->crc_len, /* sub crc on data_len */
233 0, /* ignore high-16bits of pkt_len */
234 -rxq->crc_len, /* sub crc on pkt_len */
235 0, 0 /* ignore pkt_type field */
237 __m128i dd_check, eop_check;
239 /* nb_pkts shall be less equal than RTE_I40E_MAX_RX_BURST */
240 nb_pkts = RTE_MIN(nb_pkts, RTE_I40E_MAX_RX_BURST);
242 /* nb_pkts has to be floor-aligned to RTE_I40E_DESCS_PER_LOOP */
243 nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_DESCS_PER_LOOP);
245 /* Just the act of getting into the function from the application is
246 * going to cost about 7 cycles
248 rxdp = rxq->rx_ring + rxq->rx_tail;
252 /* See if we need to rearm the RX queue - gives the prefetch a bit
255 if (rxq->rxrearm_nb > RTE_I40E_RXQ_REARM_THRESH)
258 /* Before we start moving massive data around, check to see if
259 * there is actually a packet available
261 if (!(rxdp->wb.qword1.status_error_len &
262 rte_cpu_to_le_32(1 << I40E_RX_DESC_STATUS_DD_SHIFT)))
265 /* 4 packets DD mask */
266 dd_check = _mm_set_epi64x(0x0000000100000001LL, 0x0000000100000001LL);
268 /* 4 packets EOP mask */
269 eop_check = _mm_set_epi64x(0x0000000200000002LL, 0x0000000200000002LL);
271 /* mask to shuffle from desc. to mbuf */
272 shuf_msk = _mm_set_epi8(
273 7, 6, 5, 4, /* octet 4~7, 32bits rss */
274 3, 2, /* octet 2~3, low 16 bits vlan_macip */
275 15, 14, /* octet 15~14, 16 bits data_len */
276 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
277 15, 14, /* octet 15~14, low 16 bits pkt_len */
278 0xFF, 0xFF, /* pkt_type set as unknown */
279 0xFF, 0xFF /*pkt_type set as unknown */
282 /* Cache is empty -> need to scan the buffer rings, but first move
283 * the next 'n' mbufs into the cache
285 sw_ring = &rxq->sw_ring[rxq->rx_tail];
287 /* A. load 4 packet in one loop
288 * [A*. mask out 4 unused dirty field in desc]
289 * B. copy 4 mbuf point from swring to rx_pkts
290 * C. calc the number of DD bits among the 4 packets
291 * [C*. extract the end-of-packet bit, if requested]
292 * D. fill info. from desc to mbuf
295 for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
296 pos += RTE_I40E_DESCS_PER_LOOP,
297 rxdp += RTE_I40E_DESCS_PER_LOOP) {
298 __m128i descs[RTE_I40E_DESCS_PER_LOOP];
299 __m128i pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
300 __m128i zero, staterr, sterr_tmp1, sterr_tmp2;
301 __m128i mbp1, mbp2; /* two mbuf pointer in one XMM reg. */
303 /* B.1 load 1 mbuf point */
304 mbp1 = _mm_loadu_si128((__m128i *)&sw_ring[pos]);
305 /* Read desc statuses backwards to avoid race condition */
306 /* A.1 load 4 pkts desc */
307 descs[3] = _mm_loadu_si128((__m128i *)(rxdp + 3));
309 /* B.2 copy 2 mbuf point into rx_pkts */
310 _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
312 /* B.1 load 1 mbuf point */
313 mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos+2]);
315 descs[2] = _mm_loadu_si128((__m128i *)(rxdp + 2));
316 /* B.1 load 2 mbuf point */
317 descs[1] = _mm_loadu_si128((__m128i *)(rxdp + 1));
318 descs[0] = _mm_loadu_si128((__m128i *)(rxdp));
320 /* B.2 copy 2 mbuf point into rx_pkts */
321 _mm_storeu_si128((__m128i *)&rx_pkts[pos+2], mbp2);
324 rte_mbuf_prefetch_part2(rx_pkts[pos]);
325 rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
326 rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
327 rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
330 /* avoid compiler reorder optimization */
331 rte_compiler_barrier();
333 /* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
334 const __m128i len3 = _mm_slli_epi32(descs[3], PKTLEN_SHIFT);
335 const __m128i len2 = _mm_slli_epi32(descs[2], PKTLEN_SHIFT);
337 /* merge the now-aligned packet length fields back in */
338 descs[3] = _mm_blend_epi16(descs[3], len3, 0x80);
339 descs[2] = _mm_blend_epi16(descs[2], len2, 0x80);
341 /* D.1 pkt 3,4 convert format from desc to pktmbuf */
342 pkt_mb4 = _mm_shuffle_epi8(descs[3], shuf_msk);
343 pkt_mb3 = _mm_shuffle_epi8(descs[2], shuf_msk);
345 /* C.1 4=>2 filter staterr info only */
346 sterr_tmp2 = _mm_unpackhi_epi32(descs[3], descs[2]);
347 /* C.1 4=>2 filter staterr info only */
348 sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
350 desc_to_olflags_v(descs, &rx_pkts[pos]);
352 /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
353 pkt_mb4 = _mm_add_epi16(pkt_mb4, crc_adjust);
354 pkt_mb3 = _mm_add_epi16(pkt_mb3, crc_adjust);
356 /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
357 const __m128i len1 = _mm_slli_epi32(descs[1], PKTLEN_SHIFT);
358 const __m128i len0 = _mm_slli_epi32(descs[0], PKTLEN_SHIFT);
360 /* merge the now-aligned packet length fields back in */
361 descs[1] = _mm_blend_epi16(descs[1], len1, 0x80);
362 descs[0] = _mm_blend_epi16(descs[0], len0, 0x80);
364 /* D.1 pkt 1,2 convert format from desc to pktmbuf */
365 pkt_mb2 = _mm_shuffle_epi8(descs[1], shuf_msk);
366 pkt_mb1 = _mm_shuffle_epi8(descs[0], shuf_msk);
368 /* C.2 get 4 pkts staterr value */
369 zero = _mm_xor_si128(dd_check, dd_check);
370 staterr = _mm_unpacklo_epi32(sterr_tmp1, sterr_tmp2);
372 /* D.3 copy final 3,4 data to rx_pkts */
373 _mm_storeu_si128((void *)&rx_pkts[pos+3]->rx_descriptor_fields1,
375 _mm_storeu_si128((void *)&rx_pkts[pos+2]->rx_descriptor_fields1,
378 /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
379 pkt_mb2 = _mm_add_epi16(pkt_mb2, crc_adjust);
380 pkt_mb1 = _mm_add_epi16(pkt_mb1, crc_adjust);
382 /* C* extract and record EOP bit */
384 __m128i eop_shuf_mask = _mm_set_epi8(
385 0xFF, 0xFF, 0xFF, 0xFF,
386 0xFF, 0xFF, 0xFF, 0xFF,
387 0xFF, 0xFF, 0xFF, 0xFF,
388 0x04, 0x0C, 0x00, 0x08
391 /* and with mask to extract bits, flipping 1-0 */
392 __m128i eop_bits = _mm_andnot_si128(staterr, eop_check);
393 /* the staterr values are not in order, as the count
394 * count of dd bits doesn't care. However, for end of
395 * packet tracking, we do care, so shuffle. This also
396 * compresses the 32-bit values to 8-bit
398 eop_bits = _mm_shuffle_epi8(eop_bits, eop_shuf_mask);
399 /* store the resulting 32-bit value */
400 *(int *)split_packet = _mm_cvtsi128_si32(eop_bits);
401 split_packet += RTE_I40E_DESCS_PER_LOOP;
403 /* zero-out next pointers */
404 rx_pkts[pos]->next = NULL;
405 rx_pkts[pos + 1]->next = NULL;
406 rx_pkts[pos + 2]->next = NULL;
407 rx_pkts[pos + 3]->next = NULL;
410 /* C.3 calc available number of desc */
411 staterr = _mm_and_si128(staterr, dd_check);
412 staterr = _mm_packs_epi32(staterr, zero);
414 /* D.3 copy final 1,2 data to rx_pkts */
415 _mm_storeu_si128((void *)&rx_pkts[pos+1]->rx_descriptor_fields1,
417 _mm_storeu_si128((void *)&rx_pkts[pos]->rx_descriptor_fields1,
419 desc_to_ptype_v(descs, &rx_pkts[pos]);
420 /* C.4 calc avaialbe number of desc */
421 var = __builtin_popcountll(_mm_cvtsi128_si64(staterr));
423 if (likely(var != RTE_I40E_DESCS_PER_LOOP))
427 /* Update our internal tail pointer */
428 rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
429 rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
430 rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
437 * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
438 * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
442 i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
445 return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
448 static inline uint16_t
449 reassemble_packets(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_bufs,
450 uint16_t nb_bufs, uint8_t *split_flags)
452 struct rte_mbuf *pkts[RTE_I40E_VPMD_RX_BURST]; /*finished pkts*/
453 struct rte_mbuf *start = rxq->pkt_first_seg;
454 struct rte_mbuf *end = rxq->pkt_last_seg;
455 unsigned pkt_idx, buf_idx;
457 for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
459 /* processing a split packet */
460 end->next = rx_bufs[buf_idx];
461 rx_bufs[buf_idx]->data_len += rxq->crc_len;
464 start->pkt_len += rx_bufs[buf_idx]->data_len;
467 if (!split_flags[buf_idx]) {
468 /* it's the last packet of the set */
469 start->hash = end->hash;
470 start->ol_flags = end->ol_flags;
471 /* we need to strip crc for the whole packet */
472 start->pkt_len -= rxq->crc_len;
473 if (end->data_len > rxq->crc_len) {
474 end->data_len -= rxq->crc_len;
476 /* free up last mbuf */
477 struct rte_mbuf *secondlast = start;
479 while (secondlast->next != end)
480 secondlast = secondlast->next;
481 secondlast->data_len -= (rxq->crc_len -
483 secondlast->next = NULL;
484 rte_pktmbuf_free_seg(end);
487 pkts[pkt_idx++] = start;
491 /* not processing a split packet */
492 if (!split_flags[buf_idx]) {
493 /* not a split packet, save and skip */
494 pkts[pkt_idx++] = rx_bufs[buf_idx];
497 end = start = rx_bufs[buf_idx];
498 rx_bufs[buf_idx]->data_len += rxq->crc_len;
499 rx_bufs[buf_idx]->pkt_len += rxq->crc_len;
503 /* save the partial packet for next time */
504 rxq->pkt_first_seg = start;
505 rxq->pkt_last_seg = end;
506 memcpy(rx_bufs, pkts, pkt_idx * (sizeof(*pkts)));
510 /* vPMD receive routine that reassembles scattered packets
512 * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
513 * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
517 i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
521 struct i40e_rx_queue *rxq = rx_queue;
522 uint8_t split_flags[RTE_I40E_VPMD_RX_BURST] = {0};
524 /* get some new buffers */
525 uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
530 /* happy day case, full burst + no packets to be joined */
531 const uint64_t *split_fl64 = (uint64_t *)split_flags;
533 if (rxq->pkt_first_seg == NULL &&
534 split_fl64[0] == 0 && split_fl64[1] == 0 &&
535 split_fl64[2] == 0 && split_fl64[3] == 0)
538 /* reassemble any packets that need reassembly*/
541 if (rxq->pkt_first_seg == NULL) {
542 /* find the first split flag, and only reassemble then*/
543 while (i < nb_bufs && !split_flags[i])
548 return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
553 vtx1(volatile struct i40e_tx_desc *txdp,
554 struct rte_mbuf *pkt, uint64_t flags)
556 uint64_t high_qw = (I40E_TX_DESC_DTYPE_DATA |
557 ((uint64_t)flags << I40E_TXD_QW1_CMD_SHIFT) |
558 ((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT));
560 __m128i descriptor = _mm_set_epi64x(high_qw,
561 pkt->buf_physaddr + pkt->data_off);
562 _mm_store_si128((__m128i *)txdp, descriptor);
566 vtx(volatile struct i40e_tx_desc *txdp,
567 struct rte_mbuf **pkt, uint16_t nb_pkts, uint64_t flags)
571 for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
572 vtx1(txdp, *pkt, flags);
575 static inline int __attribute__((always_inline))
576 i40e_tx_free_bufs(struct i40e_tx_queue *txq)
578 struct i40e_tx_entry *txep;
582 struct rte_mbuf *m, *free[RTE_I40E_TX_MAX_FREE_BUF_SZ];
584 /* check DD bits on threshold descriptor */
585 if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
586 rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) !=
587 rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))
590 n = txq->tx_rs_thresh;
592 /* first buffer to free from S/W ring is at index
593 * tx_next_dd - (tx_rs_thresh-1)
595 txep = &txq->sw_ring[txq->tx_next_dd - (n - 1)];
596 m = __rte_pktmbuf_prefree_seg(txep[0].mbuf);
597 if (likely(m != NULL)) {
600 for (i = 1; i < n; i++) {
601 m = __rte_pktmbuf_prefree_seg(txep[i].mbuf);
602 if (likely(m != NULL)) {
603 if (likely(m->pool == free[0]->pool)) {
606 rte_mempool_put_bulk(free[0]->pool,
614 rte_mempool_put_bulk(free[0]->pool, (void **)free, nb_free);
616 for (i = 1; i < n; i++) {
617 m = __rte_pktmbuf_prefree_seg(txep[i].mbuf);
619 rte_mempool_put(m->pool, m);
623 /* buffers were freed, update counters */
624 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
625 txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
626 if (txq->tx_next_dd >= txq->nb_tx_desc)
627 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
629 return txq->tx_rs_thresh;
632 static inline void __attribute__((always_inline))
633 tx_backlog_entry(struct i40e_tx_entry *txep,
634 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
638 for (i = 0; i < (int)nb_pkts; ++i)
639 txep[i].mbuf = tx_pkts[i];
643 i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
646 struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue;
647 volatile struct i40e_tx_desc *txdp;
648 struct i40e_tx_entry *txep;
649 uint16_t n, nb_commit, tx_id;
650 uint64_t flags = I40E_TD_CMD;
651 uint64_t rs = I40E_TX_DESC_CMD_RS | I40E_TD_CMD;
654 /* cross rx_thresh boundary is not allowed */
655 nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh);
657 if (txq->nb_tx_free < txq->tx_free_thresh)
658 i40e_tx_free_bufs(txq);
660 nb_commit = nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
661 if (unlikely(nb_pkts == 0))
664 tx_id = txq->tx_tail;
665 txdp = &txq->tx_ring[tx_id];
666 txep = &txq->sw_ring[tx_id];
668 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
670 n = (uint16_t)(txq->nb_tx_desc - tx_id);
671 if (nb_commit >= n) {
672 tx_backlog_entry(txep, tx_pkts, n);
674 for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
675 vtx1(txdp, *tx_pkts, flags);
677 vtx1(txdp, *tx_pkts++, rs);
679 nb_commit = (uint16_t)(nb_commit - n);
682 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
684 /* avoid reach the end of ring */
685 txdp = &txq->tx_ring[tx_id];
686 txep = &txq->sw_ring[tx_id];
689 tx_backlog_entry(txep, tx_pkts, nb_commit);
691 vtx(txdp, tx_pkts, nb_commit, flags);
693 tx_id = (uint16_t)(tx_id + nb_commit);
694 if (tx_id > txq->tx_next_rs) {
695 txq->tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
696 rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) <<
697 I40E_TXD_QW1_CMD_SHIFT);
699 (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
702 txq->tx_tail = tx_id;
704 I40E_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
709 void __attribute__((cold))
710 i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq)
712 const unsigned mask = rxq->nb_rx_desc - 1;
715 if (rxq->sw_ring == NULL || rxq->rxrearm_nb >= rxq->nb_rx_desc)
718 /* free all mbufs that are valid in the ring */
719 if (rxq->rxrearm_nb == 0) {
720 for (i = 0; i < rxq->nb_rx_desc; i++) {
721 if (rxq->sw_ring[i].mbuf != NULL)
722 rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
725 for (i = rxq->rx_tail;
726 i != rxq->rxrearm_start;
727 i = (i + 1) & mask) {
728 if (rxq->sw_ring[i].mbuf != NULL)
729 rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
733 rxq->rxrearm_nb = rxq->nb_rx_desc;
735 /* set all entries to NULL */
736 memset(rxq->sw_ring, 0, sizeof(rxq->sw_ring[0]) * rxq->nb_rx_desc);
739 int __attribute__((cold))
740 i40e_rxq_vec_setup(struct i40e_rx_queue *rxq)
743 struct rte_mbuf mb_def = { .buf_addr = 0 }; /* zeroed mbuf */
746 mb_def.data_off = RTE_PKTMBUF_HEADROOM;
747 mb_def.port = rxq->port_id;
748 rte_mbuf_refcnt_set(&mb_def, 1);
750 /* prevent compiler reordering: rearm_data covers previous fields */
751 rte_compiler_barrier();
752 p = (uintptr_t)&mb_def.rearm_data;
753 rxq->mbuf_initializer = *(uint64_t *)p;
757 int __attribute__((cold))
758 i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused *txq)
763 int __attribute__((cold))
764 i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
766 #ifndef RTE_LIBRTE_IEEE1588
767 struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
768 struct rte_fdir_conf *fconf = &dev->data->dev_conf.fdir_conf;
770 /* need SSE4.1 support */
771 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1))
774 #ifndef RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE
775 /* whithout rx ol_flags, no VP flag report */
776 if (rxmode->hw_vlan_strip != 0 ||
777 rxmode->hw_vlan_extend != 0 ||
778 rxmode->hw_ip_checksum != 0)
782 /* no fdir support */
783 if (fconf->mode != RTE_FDIR_MODE_NONE)
786 /* - no csum error report support
787 * - no header split support
789 if (rxmode->header_split == 1)