1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
13 #include <sys/queue.h>
15 #include <rte_string_fns.h>
16 #include <rte_memzone.h>
18 #include <rte_malloc.h>
19 #include <rte_ether.h>
20 #include <rte_ethdev_driver.h>
27 #include "i40e_logs.h"
28 #include "base/i40e_prototype.h"
29 #include "base/i40e_type.h"
30 #include "i40e_ethdev.h"
31 #include "i40e_rxtx.h"
33 #define DEFAULT_TX_RS_THRESH 32
34 #define DEFAULT_TX_FREE_THRESH 32
36 #define I40E_TX_MAX_BURST 32
38 #define I40E_DMA_MEM_ALIGN 4096
40 /* Base address of the HW descriptor ring should be 128B aligned. */
41 #define I40E_RING_BASE_ALIGN 128
43 #define I40E_SIMPLE_FLAGS ((uint32_t)ETH_TXQ_FLAGS_NOMULTSEGS | \
44 ETH_TXQ_FLAGS_NOOFFLOADS)
46 #define I40E_TXD_CMD (I40E_TX_DESC_CMD_EOP | I40E_TX_DESC_CMD_RS)
48 #ifdef RTE_LIBRTE_IEEE1588
49 #define I40E_TX_IEEE1588_TMST PKT_TX_IEEE1588_TMST
51 #define I40E_TX_IEEE1588_TMST 0
54 #define I40E_TX_CKSUM_OFFLOAD_MASK ( \
58 PKT_TX_OUTER_IP_CKSUM)
60 #define I40E_TX_OFFLOAD_MASK ( \
63 PKT_TX_OUTER_IP_CKSUM | \
67 PKT_TX_TUNNEL_MASK | \
68 I40E_TX_IEEE1588_TMST)
70 #define I40E_TX_OFFLOAD_NOTSUP_MASK \
71 (PKT_TX_OFFLOAD_MASK ^ I40E_TX_OFFLOAD_MASK)
74 i40e_rxd_to_vlan_tci(struct rte_mbuf *mb, volatile union i40e_rx_desc *rxdp)
76 if (rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len) &
77 (1 << I40E_RX_DESC_STATUS_L2TAG1P_SHIFT)) {
78 mb->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
80 rte_le_to_cpu_16(rxdp->wb.qword0.lo_dword.l2tag1);
81 PMD_RX_LOG(DEBUG, "Descriptor l2tag1: %u",
82 rte_le_to_cpu_16(rxdp->wb.qword0.lo_dword.l2tag1));
86 #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC
87 if (rte_le_to_cpu_16(rxdp->wb.qword2.ext_status) &
88 (1 << I40E_RX_DESC_EXT_STATUS_L2TAG2P_SHIFT)) {
89 mb->ol_flags |= PKT_RX_QINQ_STRIPPED;
90 mb->vlan_tci_outer = mb->vlan_tci;
91 mb->vlan_tci = rte_le_to_cpu_16(rxdp->wb.qword2.l2tag2_2);
92 PMD_RX_LOG(DEBUG, "Descriptor l2tag2_1: %u, l2tag2_2: %u",
93 rte_le_to_cpu_16(rxdp->wb.qword2.l2tag2_1),
94 rte_le_to_cpu_16(rxdp->wb.qword2.l2tag2_2));
96 mb->vlan_tci_outer = 0;
99 PMD_RX_LOG(DEBUG, "Mbuf vlan_tci: %u, vlan_tci_outer: %u",
100 mb->vlan_tci, mb->vlan_tci_outer);
103 /* Translate the rx descriptor status to pkt flags */
104 static inline uint64_t
105 i40e_rxd_status_to_pkt_flags(uint64_t qword)
109 /* Check if RSS_HASH */
110 flags = (((qword >> I40E_RX_DESC_STATUS_FLTSTAT_SHIFT) &
111 I40E_RX_DESC_FLTSTAT_RSS_HASH) ==
112 I40E_RX_DESC_FLTSTAT_RSS_HASH) ? PKT_RX_RSS_HASH : 0;
114 /* Check if FDIR Match */
115 flags |= (qword & (1 << I40E_RX_DESC_STATUS_FLM_SHIFT) ?
121 static inline uint64_t
122 i40e_rxd_error_to_pkt_flags(uint64_t qword)
125 uint64_t error_bits = (qword >> I40E_RXD_QW1_ERROR_SHIFT);
127 #define I40E_RX_ERR_BITS 0x3f
128 if (likely((error_bits & I40E_RX_ERR_BITS) == 0)) {
129 flags |= (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD);
133 if (unlikely(error_bits & (1 << I40E_RX_DESC_ERROR_IPE_SHIFT)))
134 flags |= PKT_RX_IP_CKSUM_BAD;
136 flags |= PKT_RX_IP_CKSUM_GOOD;
138 if (unlikely(error_bits & (1 << I40E_RX_DESC_ERROR_L4E_SHIFT)))
139 flags |= PKT_RX_L4_CKSUM_BAD;
141 flags |= PKT_RX_L4_CKSUM_GOOD;
143 if (unlikely(error_bits & (1 << I40E_RX_DESC_ERROR_EIPE_SHIFT)))
144 flags |= PKT_RX_EIP_CKSUM_BAD;
149 /* Function to check and set the ieee1588 timesync index and get the
152 #ifdef RTE_LIBRTE_IEEE1588
153 static inline uint64_t
154 i40e_get_iee15888_flags(struct rte_mbuf *mb, uint64_t qword)
156 uint64_t pkt_flags = 0;
157 uint16_t tsyn = (qword & (I40E_RXD_QW1_STATUS_TSYNVALID_MASK
158 | I40E_RXD_QW1_STATUS_TSYNINDX_MASK))
159 >> I40E_RX_DESC_STATUS_TSYNINDX_SHIFT;
161 if ((mb->packet_type & RTE_PTYPE_L2_MASK)
162 == RTE_PTYPE_L2_ETHER_TIMESYNC)
163 pkt_flags = PKT_RX_IEEE1588_PTP;
165 pkt_flags |= PKT_RX_IEEE1588_TMST;
166 mb->timesync = tsyn & 0x03;
173 #define I40E_RX_DESC_EXT_STATUS_FLEXBH_MASK 0x03
174 #define I40E_RX_DESC_EXT_STATUS_FLEXBH_FD_ID 0x01
175 #define I40E_RX_DESC_EXT_STATUS_FLEXBH_FLEX 0x02
176 #define I40E_RX_DESC_EXT_STATUS_FLEXBL_MASK 0x03
177 #define I40E_RX_DESC_EXT_STATUS_FLEXBL_FLEX 0x01
179 static inline uint64_t
180 i40e_rxd_build_fdir(volatile union i40e_rx_desc *rxdp, struct rte_mbuf *mb)
183 #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC
184 uint16_t flexbh, flexbl;
186 flexbh = (rte_le_to_cpu_32(rxdp->wb.qword2.ext_status) >>
187 I40E_RX_DESC_EXT_STATUS_FLEXBH_SHIFT) &
188 I40E_RX_DESC_EXT_STATUS_FLEXBH_MASK;
189 flexbl = (rte_le_to_cpu_32(rxdp->wb.qword2.ext_status) >>
190 I40E_RX_DESC_EXT_STATUS_FLEXBL_SHIFT) &
191 I40E_RX_DESC_EXT_STATUS_FLEXBL_MASK;
194 if (flexbh == I40E_RX_DESC_EXT_STATUS_FLEXBH_FD_ID) {
196 rte_le_to_cpu_32(rxdp->wb.qword3.hi_dword.fd_id);
197 flags |= PKT_RX_FDIR_ID;
198 } else if (flexbh == I40E_RX_DESC_EXT_STATUS_FLEXBH_FLEX) {
200 rte_le_to_cpu_32(rxdp->wb.qword3.hi_dword.flex_bytes_hi);
201 flags |= PKT_RX_FDIR_FLX;
203 if (flexbl == I40E_RX_DESC_EXT_STATUS_FLEXBL_FLEX) {
205 rte_le_to_cpu_32(rxdp->wb.qword3.lo_dword.flex_bytes_lo);
206 flags |= PKT_RX_FDIR_FLX;
210 rte_le_to_cpu_32(rxdp->wb.qword0.hi_dword.fd_id);
211 flags |= PKT_RX_FDIR_ID;
217 i40e_parse_tunneling_params(uint64_t ol_flags,
218 union i40e_tx_offload tx_offload,
219 uint32_t *cd_tunneling)
221 /* EIPT: External (outer) IP header type */
222 if (ol_flags & PKT_TX_OUTER_IP_CKSUM)
223 *cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV4;
224 else if (ol_flags & PKT_TX_OUTER_IPV4)
225 *cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV4_NO_CSUM;
226 else if (ol_flags & PKT_TX_OUTER_IPV6)
227 *cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV6;
229 /* EIPLEN: External (outer) IP header length, in DWords */
230 *cd_tunneling |= (tx_offload.outer_l3_len >> 2) <<
231 I40E_TXD_CTX_QW0_EXT_IPLEN_SHIFT;
233 /* L4TUNT: L4 Tunneling Type */
234 switch (ol_flags & PKT_TX_TUNNEL_MASK) {
235 case PKT_TX_TUNNEL_IPIP:
236 /* for non UDP / GRE tunneling, set to 00b */
238 case PKT_TX_TUNNEL_VXLAN:
239 case PKT_TX_TUNNEL_GENEVE:
240 *cd_tunneling |= I40E_TXD_CTX_UDP_TUNNELING;
242 case PKT_TX_TUNNEL_GRE:
243 *cd_tunneling |= I40E_TXD_CTX_GRE_TUNNELING;
246 PMD_TX_LOG(ERR, "Tunnel type not supported");
250 /* L4TUNLEN: L4 Tunneling Length, in Words
252 * We depend on app to set rte_mbuf.l2_len correctly.
253 * For IP in GRE it should be set to the length of the GRE
255 * for MAC in GRE or MAC in UDP it should be set to the length
256 * of the GRE or UDP headers plus the inner MAC up to including
257 * its last Ethertype.
259 *cd_tunneling |= (tx_offload.l2_len >> 1) <<
260 I40E_TXD_CTX_QW0_NATLEN_SHIFT;
264 i40e_txd_enable_checksum(uint64_t ol_flags,
267 union i40e_tx_offload tx_offload)
270 if (ol_flags & PKT_TX_TUNNEL_MASK)
271 *td_offset |= (tx_offload.outer_l2_len >> 1)
272 << I40E_TX_DESC_LENGTH_MACLEN_SHIFT;
274 *td_offset |= (tx_offload.l2_len >> 1)
275 << I40E_TX_DESC_LENGTH_MACLEN_SHIFT;
277 /* Enable L3 checksum offloads */
278 if (ol_flags & PKT_TX_IP_CKSUM) {
279 *td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV4_CSUM;
280 *td_offset |= (tx_offload.l3_len >> 2)
281 << I40E_TX_DESC_LENGTH_IPLEN_SHIFT;
282 } else if (ol_flags & PKT_TX_IPV4) {
283 *td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV4;
284 *td_offset |= (tx_offload.l3_len >> 2)
285 << I40E_TX_DESC_LENGTH_IPLEN_SHIFT;
286 } else if (ol_flags & PKT_TX_IPV6) {
287 *td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV6;
288 *td_offset |= (tx_offload.l3_len >> 2)
289 << I40E_TX_DESC_LENGTH_IPLEN_SHIFT;
292 if (ol_flags & PKT_TX_TCP_SEG) {
293 *td_cmd |= I40E_TX_DESC_CMD_L4T_EOFT_TCP;
294 *td_offset |= (tx_offload.l4_len >> 2)
295 << I40E_TX_DESC_LENGTH_L4_FC_LEN_SHIFT;
299 /* Enable L4 checksum offloads */
300 switch (ol_flags & PKT_TX_L4_MASK) {
301 case PKT_TX_TCP_CKSUM:
302 *td_cmd |= I40E_TX_DESC_CMD_L4T_EOFT_TCP;
303 *td_offset |= (sizeof(struct tcp_hdr) >> 2) <<
304 I40E_TX_DESC_LENGTH_L4_FC_LEN_SHIFT;
306 case PKT_TX_SCTP_CKSUM:
307 *td_cmd |= I40E_TX_DESC_CMD_L4T_EOFT_SCTP;
308 *td_offset |= (sizeof(struct sctp_hdr) >> 2) <<
309 I40E_TX_DESC_LENGTH_L4_FC_LEN_SHIFT;
311 case PKT_TX_UDP_CKSUM:
312 *td_cmd |= I40E_TX_DESC_CMD_L4T_EOFT_UDP;
313 *td_offset |= (sizeof(struct udp_hdr) >> 2) <<
314 I40E_TX_DESC_LENGTH_L4_FC_LEN_SHIFT;
321 /* Construct the tx flags */
322 static inline uint64_t
323 i40e_build_ctob(uint32_t td_cmd,
328 return rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DATA |
329 ((uint64_t)td_cmd << I40E_TXD_QW1_CMD_SHIFT) |
330 ((uint64_t)td_offset << I40E_TXD_QW1_OFFSET_SHIFT) |
331 ((uint64_t)size << I40E_TXD_QW1_TX_BUF_SZ_SHIFT) |
332 ((uint64_t)td_tag << I40E_TXD_QW1_L2TAG1_SHIFT));
336 i40e_xmit_cleanup(struct i40e_tx_queue *txq)
338 struct i40e_tx_entry *sw_ring = txq->sw_ring;
339 volatile struct i40e_tx_desc *txd = txq->tx_ring;
340 uint16_t last_desc_cleaned = txq->last_desc_cleaned;
341 uint16_t nb_tx_desc = txq->nb_tx_desc;
342 uint16_t desc_to_clean_to;
343 uint16_t nb_tx_to_clean;
345 desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->tx_rs_thresh);
346 if (desc_to_clean_to >= nb_tx_desc)
347 desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);
349 desc_to_clean_to = sw_ring[desc_to_clean_to].last_id;
350 if ((txd[desc_to_clean_to].cmd_type_offset_bsz &
351 rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) !=
352 rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE)) {
353 PMD_TX_FREE_LOG(DEBUG, "TX descriptor %4u is not done "
354 "(port=%d queue=%d)", desc_to_clean_to,
355 txq->port_id, txq->queue_id);
359 if (last_desc_cleaned > desc_to_clean_to)
360 nb_tx_to_clean = (uint16_t)((nb_tx_desc - last_desc_cleaned) +
363 nb_tx_to_clean = (uint16_t)(desc_to_clean_to -
366 txd[desc_to_clean_to].cmd_type_offset_bsz = 0;
368 txq->last_desc_cleaned = desc_to_clean_to;
369 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean);
375 #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
376 check_rx_burst_bulk_alloc_preconditions(struct i40e_rx_queue *rxq)
378 check_rx_burst_bulk_alloc_preconditions(__rte_unused struct i40e_rx_queue *rxq)
383 #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
384 if (!(rxq->rx_free_thresh >= RTE_PMD_I40E_RX_MAX_BURST)) {
385 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
386 "rxq->rx_free_thresh=%d, "
387 "RTE_PMD_I40E_RX_MAX_BURST=%d",
388 rxq->rx_free_thresh, RTE_PMD_I40E_RX_MAX_BURST);
390 } else if (!(rxq->rx_free_thresh < rxq->nb_rx_desc)) {
391 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
392 "rxq->rx_free_thresh=%d, "
393 "rxq->nb_rx_desc=%d",
394 rxq->rx_free_thresh, rxq->nb_rx_desc);
396 } else if (rxq->nb_rx_desc % rxq->rx_free_thresh != 0) {
397 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
398 "rxq->nb_rx_desc=%d, "
399 "rxq->rx_free_thresh=%d",
400 rxq->nb_rx_desc, rxq->rx_free_thresh);
410 #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
411 #define I40E_LOOK_AHEAD 8
412 #if (I40E_LOOK_AHEAD != 8)
413 #error "PMD I40E: I40E_LOOK_AHEAD must be 8\n"
416 i40e_rx_scan_hw_ring(struct i40e_rx_queue *rxq)
418 volatile union i40e_rx_desc *rxdp;
419 struct i40e_rx_entry *rxep;
424 int32_t s[I40E_LOOK_AHEAD], nb_dd;
425 int32_t i, j, nb_rx = 0;
427 uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl;
429 rxdp = &rxq->rx_ring[rxq->rx_tail];
430 rxep = &rxq->sw_ring[rxq->rx_tail];
432 qword1 = rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len);
433 rx_status = (qword1 & I40E_RXD_QW1_STATUS_MASK) >>
434 I40E_RXD_QW1_STATUS_SHIFT;
436 /* Make sure there is at least 1 packet to receive */
437 if (!(rx_status & (1 << I40E_RX_DESC_STATUS_DD_SHIFT)))
441 * Scan LOOK_AHEAD descriptors at a time to determine which
442 * descriptors reference packets that are ready to be received.
444 for (i = 0; i < RTE_PMD_I40E_RX_MAX_BURST; i+=I40E_LOOK_AHEAD,
445 rxdp += I40E_LOOK_AHEAD, rxep += I40E_LOOK_AHEAD) {
446 /* Read desc statuses backwards to avoid race condition */
447 for (j = I40E_LOOK_AHEAD - 1; j >= 0; j--) {
448 qword1 = rte_le_to_cpu_64(\
449 rxdp[j].wb.qword1.status_error_len);
450 s[j] = (qword1 & I40E_RXD_QW1_STATUS_MASK) >>
451 I40E_RXD_QW1_STATUS_SHIFT;
456 /* Compute how many status bits were set */
457 for (j = 0, nb_dd = 0; j < I40E_LOOK_AHEAD; j++)
458 nb_dd += s[j] & (1 << I40E_RX_DESC_STATUS_DD_SHIFT);
462 /* Translate descriptor info to mbuf parameters */
463 for (j = 0; j < nb_dd; j++) {
465 qword1 = rte_le_to_cpu_64(\
466 rxdp[j].wb.qword1.status_error_len);
467 pkt_len = ((qword1 & I40E_RXD_QW1_LENGTH_PBUF_MASK) >>
468 I40E_RXD_QW1_LENGTH_PBUF_SHIFT) - rxq->crc_len;
469 mb->data_len = pkt_len;
470 mb->pkt_len = pkt_len;
472 i40e_rxd_to_vlan_tci(mb, &rxdp[j]);
473 pkt_flags = i40e_rxd_status_to_pkt_flags(qword1);
474 pkt_flags |= i40e_rxd_error_to_pkt_flags(qword1);
476 ptype_tbl[(uint8_t)((qword1 &
477 I40E_RXD_QW1_PTYPE_MASK) >>
478 I40E_RXD_QW1_PTYPE_SHIFT)];
479 if (pkt_flags & PKT_RX_RSS_HASH)
480 mb->hash.rss = rte_le_to_cpu_32(\
481 rxdp[j].wb.qword0.hi_dword.rss);
482 if (pkt_flags & PKT_RX_FDIR)
483 pkt_flags |= i40e_rxd_build_fdir(&rxdp[j], mb);
485 #ifdef RTE_LIBRTE_IEEE1588
486 pkt_flags |= i40e_get_iee15888_flags(mb, qword1);
488 mb->ol_flags |= pkt_flags;
492 for (j = 0; j < I40E_LOOK_AHEAD; j++)
493 rxq->rx_stage[i + j] = rxep[j].mbuf;
495 if (nb_dd != I40E_LOOK_AHEAD)
499 /* Clear software ring entries */
500 for (i = 0; i < nb_rx; i++)
501 rxq->sw_ring[rxq->rx_tail + i].mbuf = NULL;
506 static inline uint16_t
507 i40e_rx_fill_from_stage(struct i40e_rx_queue *rxq,
508 struct rte_mbuf **rx_pkts,
512 struct rte_mbuf **stage = &rxq->rx_stage[rxq->rx_next_avail];
514 nb_pkts = (uint16_t)RTE_MIN(nb_pkts, rxq->rx_nb_avail);
516 for (i = 0; i < nb_pkts; i++)
517 rx_pkts[i] = stage[i];
519 rxq->rx_nb_avail = (uint16_t)(rxq->rx_nb_avail - nb_pkts);
520 rxq->rx_next_avail = (uint16_t)(rxq->rx_next_avail + nb_pkts);
526 i40e_rx_alloc_bufs(struct i40e_rx_queue *rxq)
528 volatile union i40e_rx_desc *rxdp;
529 struct i40e_rx_entry *rxep;
531 uint16_t alloc_idx, i;
535 /* Allocate buffers in bulk */
536 alloc_idx = (uint16_t)(rxq->rx_free_trigger -
537 (rxq->rx_free_thresh - 1));
538 rxep = &(rxq->sw_ring[alloc_idx]);
539 diag = rte_mempool_get_bulk(rxq->mp, (void *)rxep,
540 rxq->rx_free_thresh);
541 if (unlikely(diag != 0)) {
542 PMD_DRV_LOG(ERR, "Failed to get mbufs in bulk");
546 rxdp = &rxq->rx_ring[alloc_idx];
547 for (i = 0; i < rxq->rx_free_thresh; i++) {
548 if (likely(i < (rxq->rx_free_thresh - 1)))
549 /* Prefetch next mbuf */
550 rte_prefetch0(rxep[i + 1].mbuf);
553 rte_mbuf_refcnt_set(mb, 1);
555 mb->data_off = RTE_PKTMBUF_HEADROOM;
557 mb->port = rxq->port_id;
558 dma_addr = rte_cpu_to_le_64(\
559 rte_mbuf_data_iova_default(mb));
560 rxdp[i].read.hdr_addr = 0;
561 rxdp[i].read.pkt_addr = dma_addr;
564 /* Update rx tail regsiter */
566 I40E_PCI_REG_WRITE_RELAXED(rxq->qrx_tail, rxq->rx_free_trigger);
568 rxq->rx_free_trigger =
569 (uint16_t)(rxq->rx_free_trigger + rxq->rx_free_thresh);
570 if (rxq->rx_free_trigger >= rxq->nb_rx_desc)
571 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
576 static inline uint16_t
577 rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
579 struct i40e_rx_queue *rxq = (struct i40e_rx_queue *)rx_queue;
580 struct rte_eth_dev *dev;
586 if (rxq->rx_nb_avail)
587 return i40e_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
589 nb_rx = (uint16_t)i40e_rx_scan_hw_ring(rxq);
590 rxq->rx_next_avail = 0;
591 rxq->rx_nb_avail = nb_rx;
592 rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_rx);
594 if (rxq->rx_tail > rxq->rx_free_trigger) {
595 if (i40e_rx_alloc_bufs(rxq) != 0) {
598 dev = I40E_VSI_TO_ETH_DEV(rxq->vsi);
599 dev->data->rx_mbuf_alloc_failed +=
602 rxq->rx_nb_avail = 0;
603 rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx);
604 for (i = 0, j = rxq->rx_tail; i < nb_rx; i++, j++)
605 rxq->sw_ring[j].mbuf = rxq->rx_stage[i];
611 if (rxq->rx_tail >= rxq->nb_rx_desc)
614 if (rxq->rx_nb_avail)
615 return i40e_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
621 i40e_recv_pkts_bulk_alloc(void *rx_queue,
622 struct rte_mbuf **rx_pkts,
625 uint16_t nb_rx = 0, n, count;
627 if (unlikely(nb_pkts == 0))
630 if (likely(nb_pkts <= RTE_PMD_I40E_RX_MAX_BURST))
631 return rx_recv_pkts(rx_queue, rx_pkts, nb_pkts);
634 n = RTE_MIN(nb_pkts, RTE_PMD_I40E_RX_MAX_BURST);
635 count = rx_recv_pkts(rx_queue, &rx_pkts[nb_rx], n);
636 nb_rx = (uint16_t)(nb_rx + count);
637 nb_pkts = (uint16_t)(nb_pkts - count);
646 i40e_recv_pkts_bulk_alloc(void __rte_unused *rx_queue,
647 struct rte_mbuf __rte_unused **rx_pkts,
648 uint16_t __rte_unused nb_pkts)
652 #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */
655 i40e_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
657 struct i40e_rx_queue *rxq;
658 volatile union i40e_rx_desc *rx_ring;
659 volatile union i40e_rx_desc *rxdp;
660 union i40e_rx_desc rxd;
661 struct i40e_rx_entry *sw_ring;
662 struct i40e_rx_entry *rxe;
663 struct rte_eth_dev *dev;
664 struct rte_mbuf *rxm;
665 struct rte_mbuf *nmb;
669 uint16_t rx_packet_len;
670 uint16_t rx_id, nb_hold;
678 rx_id = rxq->rx_tail;
679 rx_ring = rxq->rx_ring;
680 sw_ring = rxq->sw_ring;
681 ptype_tbl = rxq->vsi->adapter->ptype_tbl;
683 while (nb_rx < nb_pkts) {
684 rxdp = &rx_ring[rx_id];
685 qword1 = rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len);
686 rx_status = (qword1 & I40E_RXD_QW1_STATUS_MASK)
687 >> I40E_RXD_QW1_STATUS_SHIFT;
689 /* Check the DD bit first */
690 if (!(rx_status & (1 << I40E_RX_DESC_STATUS_DD_SHIFT)))
693 nmb = rte_mbuf_raw_alloc(rxq->mp);
694 if (unlikely(!nmb)) {
695 dev = I40E_VSI_TO_ETH_DEV(rxq->vsi);
696 dev->data->rx_mbuf_alloc_failed++;
702 rxe = &sw_ring[rx_id];
704 if (unlikely(rx_id == rxq->nb_rx_desc))
707 /* Prefetch next mbuf */
708 rte_prefetch0(sw_ring[rx_id].mbuf);
711 * When next RX descriptor is on a cache line boundary,
712 * prefetch the next 4 RX descriptors and next 8 pointers
715 if ((rx_id & 0x3) == 0) {
716 rte_prefetch0(&rx_ring[rx_id]);
717 rte_prefetch0(&sw_ring[rx_id]);
722 rte_cpu_to_le_64(rte_mbuf_data_iova_default(nmb));
723 rxdp->read.hdr_addr = 0;
724 rxdp->read.pkt_addr = dma_addr;
726 rx_packet_len = ((qword1 & I40E_RXD_QW1_LENGTH_PBUF_MASK) >>
727 I40E_RXD_QW1_LENGTH_PBUF_SHIFT) - rxq->crc_len;
729 rxm->data_off = RTE_PKTMBUF_HEADROOM;
730 rte_prefetch0(RTE_PTR_ADD(rxm->buf_addr, RTE_PKTMBUF_HEADROOM));
733 rxm->pkt_len = rx_packet_len;
734 rxm->data_len = rx_packet_len;
735 rxm->port = rxq->port_id;
737 i40e_rxd_to_vlan_tci(rxm, &rxd);
738 pkt_flags = i40e_rxd_status_to_pkt_flags(qword1);
739 pkt_flags |= i40e_rxd_error_to_pkt_flags(qword1);
741 ptype_tbl[(uint8_t)((qword1 &
742 I40E_RXD_QW1_PTYPE_MASK) >> I40E_RXD_QW1_PTYPE_SHIFT)];
743 if (pkt_flags & PKT_RX_RSS_HASH)
745 rte_le_to_cpu_32(rxd.wb.qword0.hi_dword.rss);
746 if (pkt_flags & PKT_RX_FDIR)
747 pkt_flags |= i40e_rxd_build_fdir(&rxd, rxm);
749 #ifdef RTE_LIBRTE_IEEE1588
750 pkt_flags |= i40e_get_iee15888_flags(rxm, qword1);
752 rxm->ol_flags |= pkt_flags;
754 rx_pkts[nb_rx++] = rxm;
756 rxq->rx_tail = rx_id;
759 * If the number of free RX descriptors is greater than the RX free
760 * threshold of the queue, advance the receive tail register of queue.
761 * Update that register with the value of the last processed RX
762 * descriptor minus 1.
764 nb_hold = (uint16_t)(nb_hold + rxq->nb_rx_hold);
765 if (nb_hold > rxq->rx_free_thresh) {
766 rx_id = (uint16_t) ((rx_id == 0) ?
767 (rxq->nb_rx_desc - 1) : (rx_id - 1));
768 I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
771 rxq->nb_rx_hold = nb_hold;
777 i40e_recv_scattered_pkts(void *rx_queue,
778 struct rte_mbuf **rx_pkts,
781 struct i40e_rx_queue *rxq = rx_queue;
782 volatile union i40e_rx_desc *rx_ring = rxq->rx_ring;
783 volatile union i40e_rx_desc *rxdp;
784 union i40e_rx_desc rxd;
785 struct i40e_rx_entry *sw_ring = rxq->sw_ring;
786 struct i40e_rx_entry *rxe;
787 struct rte_mbuf *first_seg = rxq->pkt_first_seg;
788 struct rte_mbuf *last_seg = rxq->pkt_last_seg;
789 struct rte_mbuf *nmb, *rxm;
790 uint16_t rx_id = rxq->rx_tail;
791 uint16_t nb_rx = 0, nb_hold = 0, rx_packet_len;
792 struct rte_eth_dev *dev;
797 uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl;
799 while (nb_rx < nb_pkts) {
800 rxdp = &rx_ring[rx_id];
801 qword1 = rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len);
802 rx_status = (qword1 & I40E_RXD_QW1_STATUS_MASK) >>
803 I40E_RXD_QW1_STATUS_SHIFT;
805 /* Check the DD bit */
806 if (!(rx_status & (1 << I40E_RX_DESC_STATUS_DD_SHIFT)))
809 nmb = rte_mbuf_raw_alloc(rxq->mp);
810 if (unlikely(!nmb)) {
811 dev = I40E_VSI_TO_ETH_DEV(rxq->vsi);
812 dev->data->rx_mbuf_alloc_failed++;
818 rxe = &sw_ring[rx_id];
820 if (rx_id == rxq->nb_rx_desc)
823 /* Prefetch next mbuf */
824 rte_prefetch0(sw_ring[rx_id].mbuf);
827 * When next RX descriptor is on a cache line boundary,
828 * prefetch the next 4 RX descriptors and next 8 pointers
831 if ((rx_id & 0x3) == 0) {
832 rte_prefetch0(&rx_ring[rx_id]);
833 rte_prefetch0(&sw_ring[rx_id]);
839 rte_cpu_to_le_64(rte_mbuf_data_iova_default(nmb));
841 /* Set data buffer address and data length of the mbuf */
842 rxdp->read.hdr_addr = 0;
843 rxdp->read.pkt_addr = dma_addr;
844 rx_packet_len = (qword1 & I40E_RXD_QW1_LENGTH_PBUF_MASK) >>
845 I40E_RXD_QW1_LENGTH_PBUF_SHIFT;
846 rxm->data_len = rx_packet_len;
847 rxm->data_off = RTE_PKTMBUF_HEADROOM;
850 * If this is the first buffer of the received packet, set the
851 * pointer to the first mbuf of the packet and initialize its
852 * context. Otherwise, update the total length and the number
853 * of segments of the current scattered packet, and update the
854 * pointer to the last mbuf of the current packet.
858 first_seg->nb_segs = 1;
859 first_seg->pkt_len = rx_packet_len;
862 (uint16_t)(first_seg->pkt_len +
864 first_seg->nb_segs++;
865 last_seg->next = rxm;
869 * If this is not the last buffer of the received packet,
870 * update the pointer to the last mbuf of the current scattered
871 * packet and continue to parse the RX ring.
873 if (!(rx_status & (1 << I40E_RX_DESC_STATUS_EOF_SHIFT))) {
879 * This is the last buffer of the received packet. If the CRC
880 * is not stripped by the hardware:
881 * - Subtract the CRC length from the total packet length.
882 * - If the last buffer only contains the whole CRC or a part
883 * of it, free the mbuf associated to the last buffer. If part
884 * of the CRC is also contained in the previous mbuf, subtract
885 * the length of that CRC part from the data length of the
889 if (unlikely(rxq->crc_len > 0)) {
890 first_seg->pkt_len -= ETHER_CRC_LEN;
891 if (rx_packet_len <= ETHER_CRC_LEN) {
892 rte_pktmbuf_free_seg(rxm);
893 first_seg->nb_segs--;
895 (uint16_t)(last_seg->data_len -
896 (ETHER_CRC_LEN - rx_packet_len));
897 last_seg->next = NULL;
899 rxm->data_len = (uint16_t)(rx_packet_len -
903 first_seg->port = rxq->port_id;
904 first_seg->ol_flags = 0;
905 i40e_rxd_to_vlan_tci(first_seg, &rxd);
906 pkt_flags = i40e_rxd_status_to_pkt_flags(qword1);
907 pkt_flags |= i40e_rxd_error_to_pkt_flags(qword1);
908 first_seg->packet_type =
909 ptype_tbl[(uint8_t)((qword1 &
910 I40E_RXD_QW1_PTYPE_MASK) >> I40E_RXD_QW1_PTYPE_SHIFT)];
911 if (pkt_flags & PKT_RX_RSS_HASH)
912 first_seg->hash.rss =
913 rte_le_to_cpu_32(rxd.wb.qword0.hi_dword.rss);
914 if (pkt_flags & PKT_RX_FDIR)
915 pkt_flags |= i40e_rxd_build_fdir(&rxd, first_seg);
917 #ifdef RTE_LIBRTE_IEEE1588
918 pkt_flags |= i40e_get_iee15888_flags(first_seg, qword1);
920 first_seg->ol_flags |= pkt_flags;
922 /* Prefetch data of first segment, if configured to do so. */
923 rte_prefetch0(RTE_PTR_ADD(first_seg->buf_addr,
924 first_seg->data_off));
925 rx_pkts[nb_rx++] = first_seg;
929 /* Record index of the next RX descriptor to probe. */
930 rxq->rx_tail = rx_id;
931 rxq->pkt_first_seg = first_seg;
932 rxq->pkt_last_seg = last_seg;
935 * If the number of free RX descriptors is greater than the RX free
936 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
937 * register. Update the RDT with the value of the last processed RX
938 * descriptor minus 1, to guarantee that the RDT register is never
939 * equal to the RDH register, which creates a "full" ring situtation
940 * from the hardware point of view.
942 nb_hold = (uint16_t)(nb_hold + rxq->nb_rx_hold);
943 if (nb_hold > rxq->rx_free_thresh) {
944 rx_id = (uint16_t)(rx_id == 0 ?
945 (rxq->nb_rx_desc - 1) : (rx_id - 1));
946 I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
949 rxq->nb_rx_hold = nb_hold;
954 /* Check if the context descriptor is needed for TX offloading */
955 static inline uint16_t
956 i40e_calc_context_desc(uint64_t flags)
958 static uint64_t mask = PKT_TX_OUTER_IP_CKSUM |
963 #ifdef RTE_LIBRTE_IEEE1588
964 mask |= PKT_TX_IEEE1588_TMST;
967 return (flags & mask) ? 1 : 0;
970 /* set i40e TSO context descriptor */
971 static inline uint64_t
972 i40e_set_tso_ctx(struct rte_mbuf *mbuf, union i40e_tx_offload tx_offload)
974 uint64_t ctx_desc = 0;
975 uint32_t cd_cmd, hdr_len, cd_tso_len;
977 if (!tx_offload.l4_len) {
978 PMD_DRV_LOG(DEBUG, "L4 length set to 0");
983 * in case of non tunneling packet, the outer_l2_len and
984 * outer_l3_len must be 0.
986 hdr_len = tx_offload.outer_l2_len +
987 tx_offload.outer_l3_len +
992 cd_cmd = I40E_TX_CTX_DESC_TSO;
993 cd_tso_len = mbuf->pkt_len - hdr_len;
994 ctx_desc |= ((uint64_t)cd_cmd << I40E_TXD_CTX_QW1_CMD_SHIFT) |
995 ((uint64_t)cd_tso_len <<
996 I40E_TXD_CTX_QW1_TSO_LEN_SHIFT) |
997 ((uint64_t)mbuf->tso_segsz <<
998 I40E_TXD_CTX_QW1_MSS_SHIFT);
1004 i40e_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
1006 struct i40e_tx_queue *txq;
1007 struct i40e_tx_entry *sw_ring;
1008 struct i40e_tx_entry *txe, *txn;
1009 volatile struct i40e_tx_desc *txd;
1010 volatile struct i40e_tx_desc *txr;
1011 struct rte_mbuf *tx_pkt;
1012 struct rte_mbuf *m_seg;
1013 uint32_t cd_tunneling_params;
1024 uint64_t buf_dma_addr;
1025 union i40e_tx_offload tx_offload = {0};
1028 sw_ring = txq->sw_ring;
1030 tx_id = txq->tx_tail;
1031 txe = &sw_ring[tx_id];
1033 /* Check if the descriptor ring needs to be cleaned. */
1034 if (txq->nb_tx_free < txq->tx_free_thresh)
1035 i40e_xmit_cleanup(txq);
1037 for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
1042 tx_pkt = *tx_pkts++;
1043 RTE_MBUF_PREFETCH_TO_FREE(txe->mbuf);
1045 ol_flags = tx_pkt->ol_flags;
1046 tx_offload.l2_len = tx_pkt->l2_len;
1047 tx_offload.l3_len = tx_pkt->l3_len;
1048 tx_offload.outer_l2_len = tx_pkt->outer_l2_len;
1049 tx_offload.outer_l3_len = tx_pkt->outer_l3_len;
1050 tx_offload.l4_len = tx_pkt->l4_len;
1051 tx_offload.tso_segsz = tx_pkt->tso_segsz;
1053 /* Calculate the number of context descriptors needed. */
1054 nb_ctx = i40e_calc_context_desc(ol_flags);
1057 * The number of descriptors that must be allocated for
1058 * a packet equals to the number of the segments of that
1059 * packet plus 1 context descriptor if needed.
1061 nb_used = (uint16_t)(tx_pkt->nb_segs + nb_ctx);
1062 tx_last = (uint16_t)(tx_id + nb_used - 1);
1065 if (tx_last >= txq->nb_tx_desc)
1066 tx_last = (uint16_t)(tx_last - txq->nb_tx_desc);
1068 if (nb_used > txq->nb_tx_free) {
1069 if (i40e_xmit_cleanup(txq) != 0) {
1074 if (unlikely(nb_used > txq->tx_rs_thresh)) {
1075 while (nb_used > txq->nb_tx_free) {
1076 if (i40e_xmit_cleanup(txq) != 0) {
1085 /* Descriptor based VLAN insertion */
1086 if (ol_flags & (PKT_TX_VLAN_PKT | PKT_TX_QINQ_PKT)) {
1087 td_cmd |= I40E_TX_DESC_CMD_IL2TAG1;
1088 td_tag = tx_pkt->vlan_tci;
1091 /* Always enable CRC offload insertion */
1092 td_cmd |= I40E_TX_DESC_CMD_ICRC;
1094 /* Fill in tunneling parameters if necessary */
1095 cd_tunneling_params = 0;
1096 if (ol_flags & PKT_TX_TUNNEL_MASK)
1097 i40e_parse_tunneling_params(ol_flags, tx_offload,
1098 &cd_tunneling_params);
1099 /* Enable checksum offloading */
1100 if (ol_flags & I40E_TX_CKSUM_OFFLOAD_MASK)
1101 i40e_txd_enable_checksum(ol_flags, &td_cmd,
1102 &td_offset, tx_offload);
1105 /* Setup TX context descriptor if required */
1106 volatile struct i40e_tx_context_desc *ctx_txd =
1107 (volatile struct i40e_tx_context_desc *)\
1109 uint16_t cd_l2tag2 = 0;
1110 uint64_t cd_type_cmd_tso_mss =
1111 I40E_TX_DESC_DTYPE_CONTEXT;
1113 txn = &sw_ring[txe->next_id];
1114 RTE_MBUF_PREFETCH_TO_FREE(txn->mbuf);
1115 if (txe->mbuf != NULL) {
1116 rte_pktmbuf_free_seg(txe->mbuf);
1120 /* TSO enabled means no timestamp */
1121 if (ol_flags & PKT_TX_TCP_SEG)
1122 cd_type_cmd_tso_mss |=
1123 i40e_set_tso_ctx(tx_pkt, tx_offload);
1125 #ifdef RTE_LIBRTE_IEEE1588
1126 if (ol_flags & PKT_TX_IEEE1588_TMST)
1127 cd_type_cmd_tso_mss |=
1128 ((uint64_t)I40E_TX_CTX_DESC_TSYN <<
1129 I40E_TXD_CTX_QW1_CMD_SHIFT);
1133 ctx_txd->tunneling_params =
1134 rte_cpu_to_le_32(cd_tunneling_params);
1135 if (ol_flags & PKT_TX_QINQ_PKT) {
1136 cd_l2tag2 = tx_pkt->vlan_tci_outer;
1137 cd_type_cmd_tso_mss |=
1138 ((uint64_t)I40E_TX_CTX_DESC_IL2TAG2 <<
1139 I40E_TXD_CTX_QW1_CMD_SHIFT);
1141 ctx_txd->l2tag2 = rte_cpu_to_le_16(cd_l2tag2);
1142 ctx_txd->type_cmd_tso_mss =
1143 rte_cpu_to_le_64(cd_type_cmd_tso_mss);
1145 PMD_TX_LOG(DEBUG, "mbuf: %p, TCD[%u]:\n"
1146 "tunneling_params: %#x;\n"
1149 "type_cmd_tso_mss: %#"PRIx64";\n",
1151 ctx_txd->tunneling_params,
1154 ctx_txd->type_cmd_tso_mss);
1156 txe->last_id = tx_last;
1157 tx_id = txe->next_id;
1164 txn = &sw_ring[txe->next_id];
1167 rte_pktmbuf_free_seg(txe->mbuf);
1170 /* Setup TX Descriptor */
1171 slen = m_seg->data_len;
1172 buf_dma_addr = rte_mbuf_data_iova(m_seg);
1174 PMD_TX_LOG(DEBUG, "mbuf: %p, TDD[%u]:\n"
1175 "buf_dma_addr: %#"PRIx64";\n"
1180 tx_pkt, tx_id, buf_dma_addr,
1181 td_cmd, td_offset, slen, td_tag);
1183 txd->buffer_addr = rte_cpu_to_le_64(buf_dma_addr);
1184 txd->cmd_type_offset_bsz = i40e_build_ctob(td_cmd,
1185 td_offset, slen, td_tag);
1186 txe->last_id = tx_last;
1187 tx_id = txe->next_id;
1189 m_seg = m_seg->next;
1190 } while (m_seg != NULL);
1192 /* The last packet data descriptor needs End Of Packet (EOP) */
1193 td_cmd |= I40E_TX_DESC_CMD_EOP;
1194 txq->nb_tx_used = (uint16_t)(txq->nb_tx_used + nb_used);
1195 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_used);
1197 if (txq->nb_tx_used >= txq->tx_rs_thresh) {
1198 PMD_TX_FREE_LOG(DEBUG,
1199 "Setting RS bit on TXD id="
1200 "%4u (port=%d queue=%d)",
1201 tx_last, txq->port_id, txq->queue_id);
1203 td_cmd |= I40E_TX_DESC_CMD_RS;
1205 /* Update txq RS bit counters */
1206 txq->nb_tx_used = 0;
1209 txd->cmd_type_offset_bsz |=
1210 rte_cpu_to_le_64(((uint64_t)td_cmd) <<
1211 I40E_TXD_QW1_CMD_SHIFT);
1217 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u",
1218 (unsigned) txq->port_id, (unsigned) txq->queue_id,
1219 (unsigned) tx_id, (unsigned) nb_tx);
1221 I40E_PCI_REG_WRITE_RELAXED(txq->qtx_tail, tx_id);
1222 txq->tx_tail = tx_id;
1227 static __rte_always_inline int
1228 i40e_tx_free_bufs(struct i40e_tx_queue *txq)
1230 struct i40e_tx_entry *txep;
1233 if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
1234 rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) !=
1235 rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))
1238 txep = &(txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)]);
1240 for (i = 0; i < txq->tx_rs_thresh; i++)
1241 rte_prefetch0((txep + i)->mbuf);
1243 if (txq->txq_flags & (uint32_t)ETH_TXQ_FLAGS_NOREFCOUNT) {
1244 for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
1245 rte_mempool_put(txep->mbuf->pool, txep->mbuf);
1249 for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
1250 rte_pktmbuf_free_seg(txep->mbuf);
1255 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
1256 txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
1257 if (txq->tx_next_dd >= txq->nb_tx_desc)
1258 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
1260 return txq->tx_rs_thresh;
1263 /* Populate 4 descriptors with data from 4 mbufs */
1265 tx4(volatile struct i40e_tx_desc *txdp, struct rte_mbuf **pkts)
1270 for (i = 0; i < 4; i++, txdp++, pkts++) {
1271 dma_addr = rte_mbuf_data_iova(*pkts);
1272 txdp->buffer_addr = rte_cpu_to_le_64(dma_addr);
1273 txdp->cmd_type_offset_bsz =
1274 i40e_build_ctob((uint32_t)I40E_TD_CMD, 0,
1275 (*pkts)->data_len, 0);
1279 /* Populate 1 descriptor with data from 1 mbuf */
1281 tx1(volatile struct i40e_tx_desc *txdp, struct rte_mbuf **pkts)
1285 dma_addr = rte_mbuf_data_iova(*pkts);
1286 txdp->buffer_addr = rte_cpu_to_le_64(dma_addr);
1287 txdp->cmd_type_offset_bsz =
1288 i40e_build_ctob((uint32_t)I40E_TD_CMD, 0,
1289 (*pkts)->data_len, 0);
1292 /* Fill hardware descriptor ring with mbuf data */
1294 i40e_tx_fill_hw_ring(struct i40e_tx_queue *txq,
1295 struct rte_mbuf **pkts,
1298 volatile struct i40e_tx_desc *txdp = &(txq->tx_ring[txq->tx_tail]);
1299 struct i40e_tx_entry *txep = &(txq->sw_ring[txq->tx_tail]);
1300 const int N_PER_LOOP = 4;
1301 const int N_PER_LOOP_MASK = N_PER_LOOP - 1;
1302 int mainpart, leftover;
1305 mainpart = (nb_pkts & ((uint32_t) ~N_PER_LOOP_MASK));
1306 leftover = (nb_pkts & ((uint32_t) N_PER_LOOP_MASK));
1307 for (i = 0; i < mainpart; i += N_PER_LOOP) {
1308 for (j = 0; j < N_PER_LOOP; ++j) {
1309 (txep + i + j)->mbuf = *(pkts + i + j);
1311 tx4(txdp + i, pkts + i);
1313 if (unlikely(leftover > 0)) {
1314 for (i = 0; i < leftover; ++i) {
1315 (txep + mainpart + i)->mbuf = *(pkts + mainpart + i);
1316 tx1(txdp + mainpart + i, pkts + mainpart + i);
1321 static inline uint16_t
1322 tx_xmit_pkts(struct i40e_tx_queue *txq,
1323 struct rte_mbuf **tx_pkts,
1326 volatile struct i40e_tx_desc *txr = txq->tx_ring;
1330 * Begin scanning the H/W ring for done descriptors when the number
1331 * of available descriptors drops below tx_free_thresh. For each done
1332 * descriptor, free the associated buffer.
1334 if (txq->nb_tx_free < txq->tx_free_thresh)
1335 i40e_tx_free_bufs(txq);
1337 /* Use available descriptor only */
1338 nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
1339 if (unlikely(!nb_pkts))
1342 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
1343 if ((txq->tx_tail + nb_pkts) > txq->nb_tx_desc) {
1344 n = (uint16_t)(txq->nb_tx_desc - txq->tx_tail);
1345 i40e_tx_fill_hw_ring(txq, tx_pkts, n);
1346 txr[txq->tx_next_rs].cmd_type_offset_bsz |=
1347 rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) <<
1348 I40E_TXD_QW1_CMD_SHIFT);
1349 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
1353 /* Fill hardware descriptor ring with mbuf data */
1354 i40e_tx_fill_hw_ring(txq, tx_pkts + n, (uint16_t)(nb_pkts - n));
1355 txq->tx_tail = (uint16_t)(txq->tx_tail + (nb_pkts - n));
1357 /* Determin if RS bit needs to be set */
1358 if (txq->tx_tail > txq->tx_next_rs) {
1359 txr[txq->tx_next_rs].cmd_type_offset_bsz |=
1360 rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) <<
1361 I40E_TXD_QW1_CMD_SHIFT);
1363 (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
1364 if (txq->tx_next_rs >= txq->nb_tx_desc)
1365 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
1368 if (txq->tx_tail >= txq->nb_tx_desc)
1371 /* Update the tx tail register */
1373 I40E_PCI_REG_WRITE_RELAXED(txq->qtx_tail, txq->tx_tail);
1379 i40e_xmit_pkts_simple(void *tx_queue,
1380 struct rte_mbuf **tx_pkts,
1385 if (likely(nb_pkts <= I40E_TX_MAX_BURST))
1386 return tx_xmit_pkts((struct i40e_tx_queue *)tx_queue,
1390 uint16_t ret, num = (uint16_t)RTE_MIN(nb_pkts,
1393 ret = tx_xmit_pkts((struct i40e_tx_queue *)tx_queue,
1394 &tx_pkts[nb_tx], num);
1395 nb_tx = (uint16_t)(nb_tx + ret);
1396 nb_pkts = (uint16_t)(nb_pkts - ret);
1405 i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
1409 struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue;
1414 num = (uint16_t)RTE_MIN(nb_pkts, txq->tx_rs_thresh);
1415 ret = i40e_xmit_fixed_burst_vec(tx_queue, &tx_pkts[nb_tx],
1426 /*********************************************************************
1430 **********************************************************************/
1432 i40e_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
1439 for (i = 0; i < nb_pkts; i++) {
1441 ol_flags = m->ol_flags;
1443 /* Check for m->nb_segs to not exceed the limits. */
1444 if (!(ol_flags & PKT_TX_TCP_SEG)) {
1445 if (m->nb_segs > I40E_TX_MAX_SEG ||
1446 m->nb_segs > I40E_TX_MAX_MTU_SEG) {
1447 rte_errno = -EINVAL;
1450 } else if ((m->tso_segsz < I40E_MIN_TSO_MSS) ||
1451 (m->tso_segsz > I40E_MAX_TSO_MSS)) {
1452 /* MSS outside the range (256B - 9674B) are considered
1455 rte_errno = -EINVAL;
1459 if (ol_flags & I40E_TX_OFFLOAD_NOTSUP_MASK) {
1460 rte_errno = -ENOTSUP;
1464 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1465 ret = rte_validate_tx_offload(m);
1471 ret = rte_net_intel_cksum_prepare(m);
1481 * Find the VSI the queue belongs to. 'queue_idx' is the queue index
1482 * application used, which assume having sequential ones. But from driver's
1483 * perspective, it's different. For example, q0 belongs to FDIR VSI, q1-q64
1484 * to MAIN VSI, , q65-96 to SRIOV VSIs, q97-128 to VMDQ VSIs. For application
1485 * running on host, q1-64 and q97-128 can be used, total 96 queues. They can
1486 * use queue_idx from 0 to 95 to access queues, while real queue would be
1487 * different. This function will do a queue mapping to find VSI the queue
1490 static struct i40e_vsi*
1491 i40e_pf_get_vsi_by_qindex(struct i40e_pf *pf, uint16_t queue_idx)
1493 /* the queue in MAIN VSI range */
1494 if (queue_idx < pf->main_vsi->nb_qps)
1495 return pf->main_vsi;
1497 queue_idx -= pf->main_vsi->nb_qps;
1499 /* queue_idx is greater than VMDQ VSIs range */
1500 if (queue_idx > pf->nb_cfg_vmdq_vsi * pf->vmdq_nb_qps - 1) {
1501 PMD_INIT_LOG(ERR, "queue_idx out of range. VMDQ configured?");
1505 return pf->vmdq[queue_idx / pf->vmdq_nb_qps].vsi;
1509 i40e_get_queue_offset_by_qindex(struct i40e_pf *pf, uint16_t queue_idx)
1511 /* the queue in MAIN VSI range */
1512 if (queue_idx < pf->main_vsi->nb_qps)
1515 /* It's VMDQ queues */
1516 queue_idx -= pf->main_vsi->nb_qps;
1518 if (pf->nb_cfg_vmdq_vsi)
1519 return queue_idx % pf->vmdq_nb_qps;
1521 PMD_INIT_LOG(ERR, "Fail to get queue offset");
1522 return (uint16_t)(-1);
1527 i40e_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1529 struct i40e_rx_queue *rxq;
1531 struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1533 PMD_INIT_FUNC_TRACE();
1535 if (rx_queue_id < dev->data->nb_rx_queues) {
1536 rxq = dev->data->rx_queues[rx_queue_id];
1538 err = i40e_alloc_rx_queue_mbufs(rxq);
1540 PMD_DRV_LOG(ERR, "Failed to allocate RX queue mbuf");
1546 /* Init the RX tail regieter. */
1547 I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
1549 err = i40e_switch_rx_queue(hw, rxq->reg_idx, TRUE);
1552 PMD_DRV_LOG(ERR, "Failed to switch RX queue %u on",
1555 i40e_rx_queue_release_mbufs(rxq);
1556 i40e_reset_rx_queue(rxq);
1558 dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
1565 i40e_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1567 struct i40e_rx_queue *rxq;
1569 struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1571 if (rx_queue_id < dev->data->nb_rx_queues) {
1572 rxq = dev->data->rx_queues[rx_queue_id];
1575 * rx_queue_id is queue id application refers to, while
1576 * rxq->reg_idx is the real queue index.
1578 err = i40e_switch_rx_queue(hw, rxq->reg_idx, FALSE);
1581 PMD_DRV_LOG(ERR, "Failed to switch RX queue %u off",
1585 i40e_rx_queue_release_mbufs(rxq);
1586 i40e_reset_rx_queue(rxq);
1587 dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
1594 i40e_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
1597 struct i40e_tx_queue *txq;
1598 struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1600 PMD_INIT_FUNC_TRACE();
1602 if (tx_queue_id < dev->data->nb_tx_queues) {
1603 txq = dev->data->tx_queues[tx_queue_id];
1606 * tx_queue_id is queue id application refers to, while
1607 * rxq->reg_idx is the real queue index.
1609 err = i40e_switch_tx_queue(hw, txq->reg_idx, TRUE);
1611 PMD_DRV_LOG(ERR, "Failed to switch TX queue %u on",
1614 dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
1621 i40e_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
1623 struct i40e_tx_queue *txq;
1625 struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1627 if (tx_queue_id < dev->data->nb_tx_queues) {
1628 txq = dev->data->tx_queues[tx_queue_id];
1631 * tx_queue_id is queue id application refers to, while
1632 * txq->reg_idx is the real queue index.
1634 err = i40e_switch_tx_queue(hw, txq->reg_idx, FALSE);
1637 PMD_DRV_LOG(ERR, "Failed to switch TX queue %u of",
1642 i40e_tx_queue_release_mbufs(txq);
1643 i40e_reset_tx_queue(txq);
1644 dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
1651 i40e_dev_supported_ptypes_get(struct rte_eth_dev *dev)
1653 static const uint32_t ptypes[] = {
1654 /* refers to i40e_rxd_pkt_type_mapping() */
1656 RTE_PTYPE_L2_ETHER_TIMESYNC,
1657 RTE_PTYPE_L2_ETHER_LLDP,
1658 RTE_PTYPE_L2_ETHER_ARP,
1659 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
1660 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
1663 RTE_PTYPE_L4_NONFRAG,
1667 RTE_PTYPE_TUNNEL_GRENAT,
1668 RTE_PTYPE_TUNNEL_IP,
1669 RTE_PTYPE_INNER_L2_ETHER,
1670 RTE_PTYPE_INNER_L2_ETHER_VLAN,
1671 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
1672 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
1673 RTE_PTYPE_INNER_L4_FRAG,
1674 RTE_PTYPE_INNER_L4_ICMP,
1675 RTE_PTYPE_INNER_L4_NONFRAG,
1676 RTE_PTYPE_INNER_L4_SCTP,
1677 RTE_PTYPE_INNER_L4_TCP,
1678 RTE_PTYPE_INNER_L4_UDP,
1682 if (dev->rx_pkt_burst == i40e_recv_pkts ||
1683 #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
1684 dev->rx_pkt_burst == i40e_recv_pkts_bulk_alloc ||
1686 dev->rx_pkt_burst == i40e_recv_scattered_pkts ||
1687 dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec ||
1688 dev->rx_pkt_burst == i40e_recv_pkts_vec ||
1689 dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec_avx2 ||
1690 dev->rx_pkt_burst == i40e_recv_pkts_vec_avx2)
1696 i40e_check_rx_queue_offloads(struct rte_eth_dev *dev, uint64_t requested)
1698 struct rte_eth_dev_info dev_info;
1699 uint64_t mandatory = dev->data->dev_conf.rxmode.offloads;
1700 uint64_t supported; /* All per port offloads */
1702 dev->dev_ops->dev_infos_get(dev, &dev_info);
1703 supported = dev_info.rx_offload_capa ^ dev_info.rx_queue_offload_capa;
1704 if ((requested & dev_info.rx_offload_capa) != requested)
1705 return 0; /* requested range check */
1706 return !((mandatory ^ requested) & supported);
1710 i40e_dev_rx_queue_setup(struct rte_eth_dev *dev,
1713 unsigned int socket_id,
1714 const struct rte_eth_rxconf *rx_conf,
1715 struct rte_mempool *mp)
1717 struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1718 struct i40e_adapter *ad =
1719 I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
1720 struct i40e_vsi *vsi;
1721 struct i40e_pf *pf = NULL;
1722 struct i40e_vf *vf = NULL;
1723 struct i40e_rx_queue *rxq;
1724 const struct rte_memzone *rz;
1727 uint16_t reg_idx, base, bsf, tc_mapping;
1728 int q_offset, use_def_burst_func = 1;
1729 struct rte_eth_dev_info dev_info;
1731 if (!i40e_check_rx_queue_offloads(dev, rx_conf->offloads)) {
1732 dev->dev_ops->dev_infos_get(dev, &dev_info);
1733 PMD_INIT_LOG(ERR, "%p: Rx queue offloads 0x%" PRIx64
1734 " don't match port offloads 0x%" PRIx64
1735 " or supported offloads 0x%" PRIx64,
1736 (void *)dev, rx_conf->offloads,
1737 dev->data->dev_conf.rxmode.offloads,
1738 dev_info.rx_offload_capa);
1742 if (hw->mac.type == I40E_MAC_VF || hw->mac.type == I40E_MAC_X722_VF) {
1743 vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
1747 reg_idx = queue_idx;
1749 pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
1750 vsi = i40e_pf_get_vsi_by_qindex(pf, queue_idx);
1753 q_offset = i40e_get_queue_offset_by_qindex(pf, queue_idx);
1756 reg_idx = vsi->base_queue + q_offset;
1759 if (nb_desc % I40E_ALIGN_RING_DESC != 0 ||
1760 (nb_desc > I40E_MAX_RING_DESC) ||
1761 (nb_desc < I40E_MIN_RING_DESC)) {
1762 PMD_DRV_LOG(ERR, "Number (%u) of receive descriptors is "
1763 "invalid", nb_desc);
1767 /* Free memory if needed */
1768 if (dev->data->rx_queues[queue_idx]) {
1769 i40e_dev_rx_queue_release(dev->data->rx_queues[queue_idx]);
1770 dev->data->rx_queues[queue_idx] = NULL;
1773 /* Allocate the rx queue data structure */
1774 rxq = rte_zmalloc_socket("i40e rx queue",
1775 sizeof(struct i40e_rx_queue),
1776 RTE_CACHE_LINE_SIZE,
1779 PMD_DRV_LOG(ERR, "Failed to allocate memory for "
1780 "rx queue data structure");
1784 rxq->nb_rx_desc = nb_desc;
1785 rxq->rx_free_thresh = rx_conf->rx_free_thresh;
1786 rxq->queue_id = queue_idx;
1787 rxq->reg_idx = reg_idx;
1788 rxq->port_id = dev->data->port_id;
1789 rxq->crc_len = (uint8_t)((dev->data->dev_conf.rxmode.offloads &
1790 DEV_RX_OFFLOAD_CRC_STRIP) ? 0 : ETHER_CRC_LEN);
1791 rxq->drop_en = rx_conf->rx_drop_en;
1793 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
1795 /* Allocate the maximun number of RX ring hardware descriptor. */
1796 len = I40E_MAX_RING_DESC;
1799 * Allocating a little more memory because vectorized/bulk_alloc Rx
1800 * functions doesn't check boundaries each time.
1802 len += RTE_PMD_I40E_RX_MAX_BURST;
1804 ring_size = RTE_ALIGN(len * sizeof(union i40e_rx_desc),
1805 I40E_DMA_MEM_ALIGN);
1807 rz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx,
1808 ring_size, I40E_RING_BASE_ALIGN, socket_id);
1810 i40e_dev_rx_queue_release(rxq);
1811 PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for RX");
1815 /* Zero all the descriptors in the ring. */
1816 memset(rz->addr, 0, ring_size);
1818 rxq->rx_ring_phys_addr = rz->iova;
1819 rxq->rx_ring = (union i40e_rx_desc *)rz->addr;
1821 len = (uint16_t)(nb_desc + RTE_PMD_I40E_RX_MAX_BURST);
1823 /* Allocate the software ring. */
1825 rte_zmalloc_socket("i40e rx sw ring",
1826 sizeof(struct i40e_rx_entry) * len,
1827 RTE_CACHE_LINE_SIZE,
1829 if (!rxq->sw_ring) {
1830 i40e_dev_rx_queue_release(rxq);
1831 PMD_DRV_LOG(ERR, "Failed to allocate memory for SW ring");
1835 i40e_reset_rx_queue(rxq);
1837 dev->data->rx_queues[queue_idx] = rxq;
1839 use_def_burst_func = check_rx_burst_bulk_alloc_preconditions(rxq);
1841 if (!use_def_burst_func) {
1842 #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
1843 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
1844 "satisfied. Rx Burst Bulk Alloc function will be "
1845 "used on port=%d, queue=%d.",
1846 rxq->port_id, rxq->queue_id);
1847 #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */
1849 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
1850 "not satisfied, Scattered Rx is requested, "
1851 "or RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC is "
1852 "not enabled on port=%d, queue=%d.",
1853 rxq->port_id, rxq->queue_id);
1854 ad->rx_bulk_alloc_allowed = false;
1857 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1858 if (!(vsi->enabled_tc & (1 << i)))
1860 tc_mapping = rte_le_to_cpu_16(vsi->info.tc_mapping[i]);
1861 base = (tc_mapping & I40E_AQ_VSI_TC_QUE_OFFSET_MASK) >>
1862 I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT;
1863 bsf = (tc_mapping & I40E_AQ_VSI_TC_QUE_NUMBER_MASK) >>
1864 I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT;
1866 if (queue_idx >= base && queue_idx < (base + BIT(bsf)))
1874 i40e_dev_rx_queue_release(void *rxq)
1876 struct i40e_rx_queue *q = (struct i40e_rx_queue *)rxq;
1879 PMD_DRV_LOG(DEBUG, "Pointer to rxq is NULL");
1883 i40e_rx_queue_release_mbufs(q);
1884 rte_free(q->sw_ring);
1889 i40e_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1891 #define I40E_RXQ_SCAN_INTERVAL 4
1892 volatile union i40e_rx_desc *rxdp;
1893 struct i40e_rx_queue *rxq;
1896 rxq = dev->data->rx_queues[rx_queue_id];
1897 rxdp = &(rxq->rx_ring[rxq->rx_tail]);
1898 while ((desc < rxq->nb_rx_desc) &&
1899 ((rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len) &
1900 I40E_RXD_QW1_STATUS_MASK) >> I40E_RXD_QW1_STATUS_SHIFT) &
1901 (1 << I40E_RX_DESC_STATUS_DD_SHIFT)) {
1903 * Check the DD bit of a rx descriptor of each 4 in a group,
1904 * to avoid checking too frequently and downgrading performance
1907 desc += I40E_RXQ_SCAN_INTERVAL;
1908 rxdp += I40E_RXQ_SCAN_INTERVAL;
1909 if (rxq->rx_tail + desc >= rxq->nb_rx_desc)
1910 rxdp = &(rxq->rx_ring[rxq->rx_tail +
1911 desc - rxq->nb_rx_desc]);
1918 i40e_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
1920 volatile union i40e_rx_desc *rxdp;
1921 struct i40e_rx_queue *rxq = rx_queue;
1925 if (unlikely(offset >= rxq->nb_rx_desc)) {
1926 PMD_DRV_LOG(ERR, "Invalid RX descriptor id %u", offset);
1930 desc = rxq->rx_tail + offset;
1931 if (desc >= rxq->nb_rx_desc)
1932 desc -= rxq->nb_rx_desc;
1934 rxdp = &(rxq->rx_ring[desc]);
1936 ret = !!(((rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len) &
1937 I40E_RXD_QW1_STATUS_MASK) >> I40E_RXD_QW1_STATUS_SHIFT) &
1938 (1 << I40E_RX_DESC_STATUS_DD_SHIFT));
1944 i40e_dev_rx_descriptor_status(void *rx_queue, uint16_t offset)
1946 struct i40e_rx_queue *rxq = rx_queue;
1947 volatile uint64_t *status;
1951 if (unlikely(offset >= rxq->nb_rx_desc))
1954 if (offset >= rxq->nb_rx_desc - rxq->nb_rx_hold)
1955 return RTE_ETH_RX_DESC_UNAVAIL;
1957 desc = rxq->rx_tail + offset;
1958 if (desc >= rxq->nb_rx_desc)
1959 desc -= rxq->nb_rx_desc;
1961 status = &rxq->rx_ring[desc].wb.qword1.status_error_len;
1962 mask = rte_le_to_cpu_64((1ULL << I40E_RX_DESC_STATUS_DD_SHIFT)
1963 << I40E_RXD_QW1_STATUS_SHIFT);
1965 return RTE_ETH_RX_DESC_DONE;
1967 return RTE_ETH_RX_DESC_AVAIL;
1971 i40e_dev_tx_descriptor_status(void *tx_queue, uint16_t offset)
1973 struct i40e_tx_queue *txq = tx_queue;
1974 volatile uint64_t *status;
1975 uint64_t mask, expect;
1978 if (unlikely(offset >= txq->nb_tx_desc))
1981 desc = txq->tx_tail + offset;
1982 /* go to next desc that has the RS bit */
1983 desc = ((desc + txq->tx_rs_thresh - 1) / txq->tx_rs_thresh) *
1985 if (desc >= txq->nb_tx_desc) {
1986 desc -= txq->nb_tx_desc;
1987 if (desc >= txq->nb_tx_desc)
1988 desc -= txq->nb_tx_desc;
1991 status = &txq->tx_ring[desc].cmd_type_offset_bsz;
1992 mask = rte_le_to_cpu_64(I40E_TXD_QW1_DTYPE_MASK);
1993 expect = rte_cpu_to_le_64(
1994 I40E_TX_DESC_DTYPE_DESC_DONE << I40E_TXD_QW1_DTYPE_SHIFT);
1995 if ((*status & mask) == expect)
1996 return RTE_ETH_TX_DESC_DONE;
1998 return RTE_ETH_TX_DESC_FULL;
2002 i40e_check_tx_queue_offloads(struct rte_eth_dev *dev, uint64_t requested)
2004 struct rte_eth_dev_info dev_info;
2005 uint64_t mandatory = dev->data->dev_conf.txmode.offloads;
2006 uint64_t supported; /* All per port offloads */
2008 dev->dev_ops->dev_infos_get(dev, &dev_info);
2009 supported = dev_info.tx_offload_capa ^ dev_info.tx_queue_offload_capa;
2010 if ((requested & dev_info.tx_offload_capa) != requested)
2011 return 0; /* requested range check */
2012 return !((mandatory ^ requested) & supported);
2016 i40e_dev_tx_queue_setup(struct rte_eth_dev *dev,
2019 unsigned int socket_id,
2020 const struct rte_eth_txconf *tx_conf)
2022 struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2023 struct i40e_vsi *vsi;
2024 struct i40e_pf *pf = NULL;
2025 struct i40e_vf *vf = NULL;
2026 struct i40e_tx_queue *txq;
2027 const struct rte_memzone *tz;
2029 uint16_t tx_rs_thresh, tx_free_thresh;
2030 uint16_t reg_idx, i, base, bsf, tc_mapping;
2032 struct rte_eth_dev_info dev_info;
2034 if (!i40e_check_tx_queue_offloads(dev, tx_conf->offloads)) {
2035 dev->dev_ops->dev_infos_get(dev, &dev_info);
2036 PMD_INIT_LOG(ERR, "%p: Tx queue offloads 0x%" PRIx64
2037 " don't match port offloads 0x%" PRIx64
2038 " or supported offloads 0x%" PRIx64,
2039 (void *)dev, tx_conf->offloads,
2040 dev->data->dev_conf.txmode.offloads,
2041 dev_info.tx_offload_capa); }
2043 if (hw->mac.type == I40E_MAC_VF || hw->mac.type == I40E_MAC_X722_VF) {
2044 vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
2048 reg_idx = queue_idx;
2050 pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
2051 vsi = i40e_pf_get_vsi_by_qindex(pf, queue_idx);
2054 q_offset = i40e_get_queue_offset_by_qindex(pf, queue_idx);
2057 reg_idx = vsi->base_queue + q_offset;
2060 if (nb_desc % I40E_ALIGN_RING_DESC != 0 ||
2061 (nb_desc > I40E_MAX_RING_DESC) ||
2062 (nb_desc < I40E_MIN_RING_DESC)) {
2063 PMD_DRV_LOG(ERR, "Number (%u) of transmit descriptors is "
2064 "invalid", nb_desc);
2069 * The following two parameters control the setting of the RS bit on
2070 * transmit descriptors. TX descriptors will have their RS bit set
2071 * after txq->tx_rs_thresh descriptors have been used. The TX
2072 * descriptor ring will be cleaned after txq->tx_free_thresh
2073 * descriptors are used or if the number of descriptors required to
2074 * transmit a packet is greater than the number of free TX descriptors.
2076 * The following constraints must be satisfied:
2077 * - tx_rs_thresh must be greater than 0.
2078 * - tx_rs_thresh must be less than the size of the ring minus 2.
2079 * - tx_rs_thresh must be less than or equal to tx_free_thresh.
2080 * - tx_rs_thresh must be a divisor of the ring size.
2081 * - tx_free_thresh must be greater than 0.
2082 * - tx_free_thresh must be less than the size of the ring minus 3.
2084 * One descriptor in the TX ring is used as a sentinel to avoid a H/W
2085 * race condition, hence the maximum threshold constraints. When set
2086 * to zero use default values.
2088 tx_rs_thresh = (uint16_t)((tx_conf->tx_rs_thresh) ?
2089 tx_conf->tx_rs_thresh : DEFAULT_TX_RS_THRESH);
2090 tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
2091 tx_conf->tx_free_thresh : DEFAULT_TX_FREE_THRESH);
2092 if (tx_rs_thresh >= (nb_desc - 2)) {
2093 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the "
2094 "number of TX descriptors minus 2. "
2095 "(tx_rs_thresh=%u port=%d queue=%d)",
2096 (unsigned int)tx_rs_thresh,
2097 (int)dev->data->port_id,
2099 return I40E_ERR_PARAM;
2101 if (tx_free_thresh >= (nb_desc - 3)) {
2102 PMD_INIT_LOG(ERR, "tx_free_thresh must be less than the "
2103 "number of TX descriptors minus 3. "
2104 "(tx_free_thresh=%u port=%d queue=%d)",
2105 (unsigned int)tx_free_thresh,
2106 (int)dev->data->port_id,
2108 return I40E_ERR_PARAM;
2110 if (tx_rs_thresh > tx_free_thresh) {
2111 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than or "
2112 "equal to tx_free_thresh. (tx_free_thresh=%u"
2113 " tx_rs_thresh=%u port=%d queue=%d)",
2114 (unsigned int)tx_free_thresh,
2115 (unsigned int)tx_rs_thresh,
2116 (int)dev->data->port_id,
2118 return I40E_ERR_PARAM;
2120 if ((nb_desc % tx_rs_thresh) != 0) {
2121 PMD_INIT_LOG(ERR, "tx_rs_thresh must be a divisor of the "
2122 "number of TX descriptors. (tx_rs_thresh=%u"
2123 " port=%d queue=%d)",
2124 (unsigned int)tx_rs_thresh,
2125 (int)dev->data->port_id,
2127 return I40E_ERR_PARAM;
2129 if ((tx_rs_thresh > 1) && (tx_conf->tx_thresh.wthresh != 0)) {
2130 PMD_INIT_LOG(ERR, "TX WTHRESH must be set to 0 if "
2131 "tx_rs_thresh is greater than 1. "
2132 "(tx_rs_thresh=%u port=%d queue=%d)",
2133 (unsigned int)tx_rs_thresh,
2134 (int)dev->data->port_id,
2136 return I40E_ERR_PARAM;
2139 /* Free memory if needed. */
2140 if (dev->data->tx_queues[queue_idx]) {
2141 i40e_dev_tx_queue_release(dev->data->tx_queues[queue_idx]);
2142 dev->data->tx_queues[queue_idx] = NULL;
2145 /* Allocate the TX queue data structure. */
2146 txq = rte_zmalloc_socket("i40e tx queue",
2147 sizeof(struct i40e_tx_queue),
2148 RTE_CACHE_LINE_SIZE,
2151 PMD_DRV_LOG(ERR, "Failed to allocate memory for "
2152 "tx queue structure");
2156 /* Allocate TX hardware ring descriptors. */
2157 ring_size = sizeof(struct i40e_tx_desc) * I40E_MAX_RING_DESC;
2158 ring_size = RTE_ALIGN(ring_size, I40E_DMA_MEM_ALIGN);
2159 tz = rte_eth_dma_zone_reserve(dev, "tx_ring", queue_idx,
2160 ring_size, I40E_RING_BASE_ALIGN, socket_id);
2162 i40e_dev_tx_queue_release(txq);
2163 PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for TX");
2167 txq->nb_tx_desc = nb_desc;
2168 txq->tx_rs_thresh = tx_rs_thresh;
2169 txq->tx_free_thresh = tx_free_thresh;
2170 txq->pthresh = tx_conf->tx_thresh.pthresh;
2171 txq->hthresh = tx_conf->tx_thresh.hthresh;
2172 txq->wthresh = tx_conf->tx_thresh.wthresh;
2173 txq->queue_id = queue_idx;
2174 txq->reg_idx = reg_idx;
2175 txq->port_id = dev->data->port_id;
2176 txq->txq_flags = tx_conf->txq_flags;
2178 txq->tx_deferred_start = tx_conf->tx_deferred_start;
2180 txq->tx_ring_phys_addr = tz->iova;
2181 txq->tx_ring = (struct i40e_tx_desc *)tz->addr;
2183 /* Allocate software ring */
2185 rte_zmalloc_socket("i40e tx sw ring",
2186 sizeof(struct i40e_tx_entry) * nb_desc,
2187 RTE_CACHE_LINE_SIZE,
2189 if (!txq->sw_ring) {
2190 i40e_dev_tx_queue_release(txq);
2191 PMD_DRV_LOG(ERR, "Failed to allocate memory for SW TX ring");
2195 i40e_reset_tx_queue(txq);
2197 dev->data->tx_queues[queue_idx] = txq;
2199 /* Use a simple TX queue without offloads or multi segs if possible */
2200 i40e_set_tx_function_flag(dev, txq);
2202 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
2203 if (!(vsi->enabled_tc & (1 << i)))
2205 tc_mapping = rte_le_to_cpu_16(vsi->info.tc_mapping[i]);
2206 base = (tc_mapping & I40E_AQ_VSI_TC_QUE_OFFSET_MASK) >>
2207 I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT;
2208 bsf = (tc_mapping & I40E_AQ_VSI_TC_QUE_NUMBER_MASK) >>
2209 I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT;
2211 if (queue_idx >= base && queue_idx < (base + BIT(bsf)))
2219 i40e_dev_tx_queue_release(void *txq)
2221 struct i40e_tx_queue *q = (struct i40e_tx_queue *)txq;
2224 PMD_DRV_LOG(DEBUG, "Pointer to TX queue is NULL");
2228 i40e_tx_queue_release_mbufs(q);
2229 rte_free(q->sw_ring);
2233 const struct rte_memzone *
2234 i40e_memzone_reserve(const char *name, uint32_t len, int socket_id)
2236 const struct rte_memzone *mz;
2238 mz = rte_memzone_lookup(name);
2242 mz = rte_memzone_reserve_aligned(name, len, socket_id,
2243 RTE_MEMZONE_IOVA_CONTIG, I40E_RING_BASE_ALIGN);
2248 i40e_rx_queue_release_mbufs(struct i40e_rx_queue *rxq)
2252 /* SSE Vector driver has a different way of releasing mbufs. */
2253 if (rxq->rx_using_sse) {
2254 i40e_rx_queue_release_mbufs_vec(rxq);
2258 if (!rxq->sw_ring) {
2259 PMD_DRV_LOG(DEBUG, "Pointer to sw_ring is NULL");
2263 for (i = 0; i < rxq->nb_rx_desc; i++) {
2264 if (rxq->sw_ring[i].mbuf) {
2265 rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
2266 rxq->sw_ring[i].mbuf = NULL;
2269 #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
2270 if (rxq->rx_nb_avail == 0)
2272 for (i = 0; i < rxq->rx_nb_avail; i++) {
2273 struct rte_mbuf *mbuf;
2275 mbuf = rxq->rx_stage[rxq->rx_next_avail + i];
2276 rte_pktmbuf_free_seg(mbuf);
2278 rxq->rx_nb_avail = 0;
2279 #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */
2283 i40e_reset_rx_queue(struct i40e_rx_queue *rxq)
2289 PMD_DRV_LOG(DEBUG, "Pointer to rxq is NULL");
2293 #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
2294 if (check_rx_burst_bulk_alloc_preconditions(rxq) == 0)
2295 len = (uint16_t)(rxq->nb_rx_desc + RTE_PMD_I40E_RX_MAX_BURST);
2297 #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */
2298 len = rxq->nb_rx_desc;
2300 for (i = 0; i < len * sizeof(union i40e_rx_desc); i++)
2301 ((volatile char *)rxq->rx_ring)[i] = 0;
2303 memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf));
2304 for (i = 0; i < RTE_PMD_I40E_RX_MAX_BURST; ++i)
2305 rxq->sw_ring[rxq->nb_rx_desc + i].mbuf = &rxq->fake_mbuf;
2307 #ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
2308 rxq->rx_nb_avail = 0;
2309 rxq->rx_next_avail = 0;
2310 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
2311 #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */
2313 rxq->nb_rx_hold = 0;
2314 rxq->pkt_first_seg = NULL;
2315 rxq->pkt_last_seg = NULL;
2317 rxq->rxrearm_start = 0;
2318 rxq->rxrearm_nb = 0;
2322 i40e_tx_queue_release_mbufs(struct i40e_tx_queue *txq)
2324 struct rte_eth_dev *dev;
2327 dev = &rte_eth_devices[txq->port_id];
2329 if (!txq || !txq->sw_ring) {
2330 PMD_DRV_LOG(DEBUG, "Pointer to rxq or sw_ring is NULL");
2335 * vPMD tx will not set sw_ring's mbuf to NULL after free,
2336 * so need to free remains more carefully.
2338 if (dev->tx_pkt_burst == i40e_xmit_pkts_vec_avx2 ||
2339 dev->tx_pkt_burst == i40e_xmit_pkts_vec) {
2340 i = txq->tx_next_dd - txq->tx_rs_thresh + 1;
2341 if (txq->tx_tail < i) {
2342 for (; i < txq->nb_tx_desc; i++) {
2343 rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
2344 txq->sw_ring[i].mbuf = NULL;
2348 for (; i < txq->tx_tail; i++) {
2349 rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
2350 txq->sw_ring[i].mbuf = NULL;
2353 for (i = 0; i < txq->nb_tx_desc; i++) {
2354 if (txq->sw_ring[i].mbuf) {
2355 rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
2356 txq->sw_ring[i].mbuf = NULL;
2363 i40e_reset_tx_queue(struct i40e_tx_queue *txq)
2365 struct i40e_tx_entry *txe;
2366 uint16_t i, prev, size;
2369 PMD_DRV_LOG(DEBUG, "Pointer to txq is NULL");
2374 size = sizeof(struct i40e_tx_desc) * txq->nb_tx_desc;
2375 for (i = 0; i < size; i++)
2376 ((volatile char *)txq->tx_ring)[i] = 0;
2378 prev = (uint16_t)(txq->nb_tx_desc - 1);
2379 for (i = 0; i < txq->nb_tx_desc; i++) {
2380 volatile struct i40e_tx_desc *txd = &txq->tx_ring[i];
2382 txd->cmd_type_offset_bsz =
2383 rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE);
2386 txe[prev].next_id = i;
2390 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
2391 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
2394 txq->nb_tx_used = 0;
2396 txq->last_desc_cleaned = (uint16_t)(txq->nb_tx_desc - 1);
2397 txq->nb_tx_free = (uint16_t)(txq->nb_tx_desc - 1);
2400 /* Init the TX queue in hardware */
2402 i40e_tx_queue_init(struct i40e_tx_queue *txq)
2404 enum i40e_status_code err = I40E_SUCCESS;
2405 struct i40e_vsi *vsi = txq->vsi;
2406 struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
2407 uint16_t pf_q = txq->reg_idx;
2408 struct i40e_hmc_obj_txq tx_ctx;
2411 /* clear the context structure first */
2412 memset(&tx_ctx, 0, sizeof(tx_ctx));
2413 tx_ctx.new_context = 1;
2414 tx_ctx.base = txq->tx_ring_phys_addr / I40E_QUEUE_BASE_ADDR_UNIT;
2415 tx_ctx.qlen = txq->nb_tx_desc;
2417 #ifdef RTE_LIBRTE_IEEE1588
2418 tx_ctx.timesync_ena = 1;
2420 tx_ctx.rdylist = rte_le_to_cpu_16(vsi->info.qs_handle[txq->dcb_tc]);
2421 if (vsi->type == I40E_VSI_FDIR)
2422 tx_ctx.fd_ena = TRUE;
2424 err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2425 if (err != I40E_SUCCESS) {
2426 PMD_DRV_LOG(ERR, "Failure of clean lan tx queue context");
2430 err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2431 if (err != I40E_SUCCESS) {
2432 PMD_DRV_LOG(ERR, "Failure of set lan tx queue context");
2436 /* Now associate this queue with this PCI function */
2437 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2438 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2439 I40E_QTX_CTL_PF_INDX_MASK);
2440 I40E_WRITE_REG(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2441 I40E_WRITE_FLUSH(hw);
2443 txq->qtx_tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2449 i40e_alloc_rx_queue_mbufs(struct i40e_rx_queue *rxq)
2451 struct i40e_rx_entry *rxe = rxq->sw_ring;
2455 for (i = 0; i < rxq->nb_rx_desc; i++) {
2456 volatile union i40e_rx_desc *rxd;
2457 struct rte_mbuf *mbuf = rte_mbuf_raw_alloc(rxq->mp);
2459 if (unlikely(!mbuf)) {
2460 PMD_DRV_LOG(ERR, "Failed to allocate mbuf for RX");
2464 rte_mbuf_refcnt_set(mbuf, 1);
2466 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
2468 mbuf->port = rxq->port_id;
2471 rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
2473 rxd = &rxq->rx_ring[i];
2474 rxd->read.pkt_addr = dma_addr;
2475 rxd->read.hdr_addr = 0;
2476 #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC
2477 rxd->read.rsvd1 = 0;
2478 rxd->read.rsvd2 = 0;
2479 #endif /* RTE_LIBRTE_I40E_16BYTE_RX_DESC */
2488 * Calculate the buffer length, and check the jumbo frame
2489 * and maximum packet length.
2492 i40e_rx_queue_config(struct i40e_rx_queue *rxq)
2494 struct i40e_pf *pf = I40E_VSI_TO_PF(rxq->vsi);
2495 struct i40e_hw *hw = I40E_VSI_TO_HW(rxq->vsi);
2496 struct rte_eth_dev_data *data = pf->dev_data;
2497 uint16_t buf_size, len;
2499 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mp) -
2500 RTE_PKTMBUF_HEADROOM);
2502 switch (pf->flags & (I40E_FLAG_HEADER_SPLIT_DISABLED |
2503 I40E_FLAG_HEADER_SPLIT_ENABLED)) {
2504 case I40E_FLAG_HEADER_SPLIT_ENABLED: /* Not supported */
2505 rxq->rx_hdr_len = RTE_ALIGN(I40E_RXBUF_SZ_1024,
2506 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2507 rxq->rx_buf_len = RTE_ALIGN(I40E_RXBUF_SZ_2048,
2508 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2509 rxq->hs_mode = i40e_header_split_enabled;
2511 case I40E_FLAG_HEADER_SPLIT_DISABLED:
2513 rxq->rx_hdr_len = 0;
2514 rxq->rx_buf_len = RTE_ALIGN_FLOOR(buf_size,
2515 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2516 rxq->hs_mode = i40e_header_split_none;
2520 len = hw->func_caps.rx_buf_chain_len * rxq->rx_buf_len;
2521 rxq->max_pkt_len = RTE_MIN(len, data->dev_conf.rxmode.max_rx_pkt_len);
2522 if (data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
2523 if (rxq->max_pkt_len <= ETHER_MAX_LEN ||
2524 rxq->max_pkt_len > I40E_FRAME_SIZE_MAX) {
2525 PMD_DRV_LOG(ERR, "maximum packet length must "
2526 "be larger than %u and smaller than %u,"
2527 "as jumbo frame is enabled",
2528 (uint32_t)ETHER_MAX_LEN,
2529 (uint32_t)I40E_FRAME_SIZE_MAX);
2530 return I40E_ERR_CONFIG;
2533 if (rxq->max_pkt_len < ETHER_MIN_LEN ||
2534 rxq->max_pkt_len > ETHER_MAX_LEN) {
2535 PMD_DRV_LOG(ERR, "maximum packet length must be "
2536 "larger than %u and smaller than %u, "
2537 "as jumbo frame is disabled",
2538 (uint32_t)ETHER_MIN_LEN,
2539 (uint32_t)ETHER_MAX_LEN);
2540 return I40E_ERR_CONFIG;
2547 /* Init the RX queue in hardware */
2549 i40e_rx_queue_init(struct i40e_rx_queue *rxq)
2551 int err = I40E_SUCCESS;
2552 struct i40e_hw *hw = I40E_VSI_TO_HW(rxq->vsi);
2553 struct rte_eth_dev_data *dev_data = I40E_VSI_TO_DEV_DATA(rxq->vsi);
2554 uint16_t pf_q = rxq->reg_idx;
2556 struct i40e_hmc_obj_rxq rx_ctx;
2558 err = i40e_rx_queue_config(rxq);
2560 PMD_DRV_LOG(ERR, "Failed to config RX queue");
2564 /* Clear the context structure first */
2565 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
2566 rx_ctx.dbuff = rxq->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2567 rx_ctx.hbuff = rxq->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2569 rx_ctx.base = rxq->rx_ring_phys_addr / I40E_QUEUE_BASE_ADDR_UNIT;
2570 rx_ctx.qlen = rxq->nb_rx_desc;
2571 #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC
2574 rx_ctx.dtype = rxq->hs_mode;
2576 rx_ctx.hsplit_0 = I40E_HEADER_SPLIT_ALL;
2578 rx_ctx.hsplit_0 = I40E_HEADER_SPLIT_NONE;
2579 rx_ctx.rxmax = rxq->max_pkt_len;
2580 rx_ctx.tphrdesc_ena = 1;
2581 rx_ctx.tphwdesc_ena = 1;
2582 rx_ctx.tphdata_ena = 1;
2583 rx_ctx.tphhead_ena = 1;
2584 rx_ctx.lrxqthresh = 2;
2585 rx_ctx.crcstrip = (rxq->crc_len == 0) ? 1 : 0;
2587 /* showiv indicates if inner VLAN is stripped inside of tunnel
2588 * packet. When set it to 1, vlan information is stripped from
2589 * the inner header, but the hardware does not put it in the
2590 * descriptor. So set it zero by default.
2595 err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2596 if (err != I40E_SUCCESS) {
2597 PMD_DRV_LOG(ERR, "Failed to clear LAN RX queue context");
2600 err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2601 if (err != I40E_SUCCESS) {
2602 PMD_DRV_LOG(ERR, "Failed to set LAN RX queue context");
2606 rxq->qrx_tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2608 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mp) -
2609 RTE_PKTMBUF_HEADROOM);
2611 /* Check if scattered RX needs to be used. */
2612 if ((rxq->max_pkt_len + 2 * I40E_VLAN_TAG_SIZE) > buf_size) {
2613 dev_data->scattered_rx = 1;
2616 /* Init the RX tail regieter. */
2617 I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
2623 i40e_dev_clear_queues(struct rte_eth_dev *dev)
2627 PMD_INIT_FUNC_TRACE();
2629 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2630 if (!dev->data->tx_queues[i])
2632 i40e_tx_queue_release_mbufs(dev->data->tx_queues[i]);
2633 i40e_reset_tx_queue(dev->data->tx_queues[i]);
2636 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2637 if (!dev->data->rx_queues[i])
2639 i40e_rx_queue_release_mbufs(dev->data->rx_queues[i]);
2640 i40e_reset_rx_queue(dev->data->rx_queues[i]);
2645 i40e_dev_free_queues(struct rte_eth_dev *dev)
2649 PMD_INIT_FUNC_TRACE();
2651 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2652 if (!dev->data->rx_queues[i])
2654 i40e_dev_rx_queue_release(dev->data->rx_queues[i]);
2655 dev->data->rx_queues[i] = NULL;
2657 dev->data->nb_rx_queues = 0;
2659 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2660 if (!dev->data->tx_queues[i])
2662 i40e_dev_tx_queue_release(dev->data->tx_queues[i]);
2663 dev->data->tx_queues[i] = NULL;
2665 dev->data->nb_tx_queues = 0;
2668 #define I40E_FDIR_NUM_TX_DESC I40E_MIN_RING_DESC
2669 #define I40E_FDIR_NUM_RX_DESC I40E_MIN_RING_DESC
2671 enum i40e_status_code
2672 i40e_fdir_setup_tx_resources(struct i40e_pf *pf)
2674 struct i40e_tx_queue *txq;
2675 const struct rte_memzone *tz = NULL;
2677 struct rte_eth_dev *dev;
2680 PMD_DRV_LOG(ERR, "PF is not available");
2681 return I40E_ERR_BAD_PTR;
2684 dev = pf->adapter->eth_dev;
2686 /* Allocate the TX queue data structure. */
2687 txq = rte_zmalloc_socket("i40e fdir tx queue",
2688 sizeof(struct i40e_tx_queue),
2689 RTE_CACHE_LINE_SIZE,
2692 PMD_DRV_LOG(ERR, "Failed to allocate memory for "
2693 "tx queue structure.");
2694 return I40E_ERR_NO_MEMORY;
2697 /* Allocate TX hardware ring descriptors. */
2698 ring_size = sizeof(struct i40e_tx_desc) * I40E_FDIR_NUM_TX_DESC;
2699 ring_size = RTE_ALIGN(ring_size, I40E_DMA_MEM_ALIGN);
2701 tz = rte_eth_dma_zone_reserve(dev, "fdir_tx_ring",
2702 I40E_FDIR_QUEUE_ID, ring_size,
2703 I40E_RING_BASE_ALIGN, SOCKET_ID_ANY);
2705 i40e_dev_tx_queue_release(txq);
2706 PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for TX.");
2707 return I40E_ERR_NO_MEMORY;
2710 txq->nb_tx_desc = I40E_FDIR_NUM_TX_DESC;
2711 txq->queue_id = I40E_FDIR_QUEUE_ID;
2712 txq->reg_idx = pf->fdir.fdir_vsi->base_queue;
2713 txq->vsi = pf->fdir.fdir_vsi;
2715 txq->tx_ring_phys_addr = tz->iova;
2716 txq->tx_ring = (struct i40e_tx_desc *)tz->addr;
2718 * don't need to allocate software ring and reset for the fdir
2719 * program queue just set the queue has been configured.
2724 return I40E_SUCCESS;
2727 enum i40e_status_code
2728 i40e_fdir_setup_rx_resources(struct i40e_pf *pf)
2730 struct i40e_rx_queue *rxq;
2731 const struct rte_memzone *rz = NULL;
2733 struct rte_eth_dev *dev;
2736 PMD_DRV_LOG(ERR, "PF is not available");
2737 return I40E_ERR_BAD_PTR;
2740 dev = pf->adapter->eth_dev;
2742 /* Allocate the RX queue data structure. */
2743 rxq = rte_zmalloc_socket("i40e fdir rx queue",
2744 sizeof(struct i40e_rx_queue),
2745 RTE_CACHE_LINE_SIZE,
2748 PMD_DRV_LOG(ERR, "Failed to allocate memory for "
2749 "rx queue structure.");
2750 return I40E_ERR_NO_MEMORY;
2753 /* Allocate RX hardware ring descriptors. */
2754 ring_size = sizeof(union i40e_rx_desc) * I40E_FDIR_NUM_RX_DESC;
2755 ring_size = RTE_ALIGN(ring_size, I40E_DMA_MEM_ALIGN);
2757 rz = rte_eth_dma_zone_reserve(dev, "fdir_rx_ring",
2758 I40E_FDIR_QUEUE_ID, ring_size,
2759 I40E_RING_BASE_ALIGN, SOCKET_ID_ANY);
2761 i40e_dev_rx_queue_release(rxq);
2762 PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for RX.");
2763 return I40E_ERR_NO_MEMORY;
2766 rxq->nb_rx_desc = I40E_FDIR_NUM_RX_DESC;
2767 rxq->queue_id = I40E_FDIR_QUEUE_ID;
2768 rxq->reg_idx = pf->fdir.fdir_vsi->base_queue;
2769 rxq->vsi = pf->fdir.fdir_vsi;
2771 rxq->rx_ring_phys_addr = rz->iova;
2772 memset(rz->addr, 0, I40E_FDIR_NUM_RX_DESC * sizeof(union i40e_rx_desc));
2773 rxq->rx_ring = (union i40e_rx_desc *)rz->addr;
2776 * Don't need to allocate software ring and reset for the fdir
2777 * rx queue, just set the queue has been configured.
2782 return I40E_SUCCESS;
2786 i40e_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
2787 struct rte_eth_rxq_info *qinfo)
2789 struct i40e_rx_queue *rxq;
2791 rxq = dev->data->rx_queues[queue_id];
2793 qinfo->mp = rxq->mp;
2794 qinfo->scattered_rx = dev->data->scattered_rx;
2795 qinfo->nb_desc = rxq->nb_rx_desc;
2797 qinfo->conf.rx_free_thresh = rxq->rx_free_thresh;
2798 qinfo->conf.rx_drop_en = rxq->drop_en;
2799 qinfo->conf.rx_deferred_start = rxq->rx_deferred_start;
2800 qinfo->conf.offloads = rxq->offloads;
2804 i40e_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
2805 struct rte_eth_txq_info *qinfo)
2807 struct i40e_tx_queue *txq;
2809 txq = dev->data->tx_queues[queue_id];
2811 qinfo->nb_desc = txq->nb_tx_desc;
2813 qinfo->conf.tx_thresh.pthresh = txq->pthresh;
2814 qinfo->conf.tx_thresh.hthresh = txq->hthresh;
2815 qinfo->conf.tx_thresh.wthresh = txq->wthresh;
2817 qinfo->conf.tx_free_thresh = txq->tx_free_thresh;
2818 qinfo->conf.tx_rs_thresh = txq->tx_rs_thresh;
2819 qinfo->conf.txq_flags = txq->txq_flags;
2820 qinfo->conf.tx_deferred_start = txq->tx_deferred_start;
2823 void __attribute__((cold))
2824 i40e_set_rx_function(struct rte_eth_dev *dev)
2826 struct i40e_adapter *ad =
2827 I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
2828 uint16_t rx_using_sse, i;
2829 /* In order to allow Vector Rx there are a few configuration
2830 * conditions to be met and Rx Bulk Allocation should be allowed.
2832 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
2833 if (i40e_rx_vec_dev_conf_condition_check(dev) ||
2834 !ad->rx_bulk_alloc_allowed) {
2835 PMD_INIT_LOG(DEBUG, "Port[%d] doesn't meet"
2836 " Vector Rx preconditions",
2837 dev->data->port_id);
2839 ad->rx_vec_allowed = false;
2841 if (ad->rx_vec_allowed) {
2842 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2843 struct i40e_rx_queue *rxq =
2844 dev->data->rx_queues[i];
2846 if (rxq && i40e_rxq_vec_setup(rxq)) {
2847 ad->rx_vec_allowed = false;
2854 if (dev->data->scattered_rx) {
2855 /* Set the non-LRO scattered callback: there are Vector and
2856 * single allocation versions.
2858 if (ad->rx_vec_allowed) {
2859 PMD_INIT_LOG(DEBUG, "Using Vector Scattered Rx "
2860 "callback (port=%d).",
2861 dev->data->port_id);
2863 dev->rx_pkt_burst = i40e_recv_scattered_pkts_vec;
2866 * since AVX frequency can be different to base
2867 * frequency, limit use of AVX2 version to later
2868 * plaforms, not all those that could theoretically
2871 if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
2873 i40e_recv_scattered_pkts_vec_avx2;
2876 PMD_INIT_LOG(DEBUG, "Using a Scattered with bulk "
2877 "allocation callback (port=%d).",
2878 dev->data->port_id);
2879 dev->rx_pkt_burst = i40e_recv_scattered_pkts;
2881 /* If parameters allow we are going to choose between the following
2885 * - Single buffer allocation (the simplest one)
2887 } else if (ad->rx_vec_allowed) {
2888 PMD_INIT_LOG(DEBUG, "Vector rx enabled, please make sure RX "
2889 "burst size no less than %d (port=%d).",
2890 RTE_I40E_DESCS_PER_LOOP,
2891 dev->data->port_id);
2893 dev->rx_pkt_burst = i40e_recv_pkts_vec;
2896 * since AVX frequency can be different to base
2897 * frequency, limit use of AVX2 version to later
2898 * plaforms, not all those that could theoretically
2901 if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
2902 dev->rx_pkt_burst = i40e_recv_pkts_vec_avx2;
2904 } else if (ad->rx_bulk_alloc_allowed) {
2905 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
2906 "satisfied. Rx Burst Bulk Alloc function "
2907 "will be used on port=%d.",
2908 dev->data->port_id);
2910 dev->rx_pkt_burst = i40e_recv_pkts_bulk_alloc;
2912 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are not "
2913 "satisfied, or Scattered Rx is requested "
2915 dev->data->port_id);
2917 dev->rx_pkt_burst = i40e_recv_pkts;
2920 /* Propagate information about RX function choice through all queues. */
2921 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
2923 (dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec ||
2924 dev->rx_pkt_burst == i40e_recv_pkts_vec ||
2925 dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec_avx2 ||
2926 dev->rx_pkt_burst == i40e_recv_pkts_vec_avx2);
2928 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2929 struct i40e_rx_queue *rxq = dev->data->rx_queues[i];
2932 rxq->rx_using_sse = rx_using_sse;
2937 void __attribute__((cold))
2938 i40e_set_tx_function_flag(struct rte_eth_dev *dev, struct i40e_tx_queue *txq)
2940 struct i40e_adapter *ad =
2941 I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
2943 /* Use a simple Tx queue (no offloads, no multi segs) if possible */
2944 if (((txq->txq_flags & I40E_SIMPLE_FLAGS) == I40E_SIMPLE_FLAGS)
2945 && (txq->tx_rs_thresh >= RTE_PMD_I40E_TX_MAX_BURST)) {
2946 if (txq->tx_rs_thresh <= RTE_I40E_TX_MAX_FREE_BUF_SZ) {
2947 PMD_INIT_LOG(DEBUG, "Vector tx"
2948 " can be enabled on this txq.");
2951 ad->tx_vec_allowed = false;
2954 ad->tx_simple_allowed = false;
2958 void __attribute__((cold))
2959 i40e_set_tx_function(struct rte_eth_dev *dev)
2961 struct i40e_adapter *ad =
2962 I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
2965 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
2966 if (ad->tx_vec_allowed) {
2967 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2968 struct i40e_tx_queue *txq =
2969 dev->data->tx_queues[i];
2971 if (txq && i40e_txq_vec_setup(txq)) {
2972 ad->tx_vec_allowed = false;
2979 if (ad->tx_simple_allowed) {
2980 if (ad->tx_vec_allowed) {
2981 PMD_INIT_LOG(DEBUG, "Vector tx finally be used.");
2982 dev->tx_pkt_burst = i40e_xmit_pkts_vec;
2985 * since AVX frequency can be different to base
2986 * frequency, limit use of AVX2 version to later
2987 * plaforms, not all those that could theoretically
2990 if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
2991 dev->tx_pkt_burst = i40e_xmit_pkts_vec_avx2;
2994 PMD_INIT_LOG(DEBUG, "Simple tx finally be used.");
2995 dev->tx_pkt_burst = i40e_xmit_pkts_simple;
2997 dev->tx_pkt_prepare = NULL;
2999 PMD_INIT_LOG(DEBUG, "Xmit tx finally be used.");
3000 dev->tx_pkt_burst = i40e_xmit_pkts;
3001 dev->tx_pkt_prepare = i40e_prep_pkts;
3005 void __attribute__((cold))
3006 i40e_set_default_ptype_table(struct rte_eth_dev *dev)
3008 struct i40e_adapter *ad =
3009 I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
3012 for (i = 0; i < I40E_MAX_PKT_TYPE; i++)
3013 ad->ptype_tbl[i] = i40e_get_default_pkt_type(i);
3016 void __attribute__((cold))
3017 i40e_set_default_pctype_table(struct rte_eth_dev *dev)
3019 struct i40e_adapter *ad =
3020 I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
3021 struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3024 for (i = 0; i < I40E_FLOW_TYPE_MAX; i++)
3025 ad->pctypes_tbl[i] = 0ULL;
3026 ad->flow_types_mask = 0ULL;
3027 ad->pctypes_mask = 0ULL;
3029 ad->pctypes_tbl[RTE_ETH_FLOW_FRAG_IPV4] =
3030 (1ULL << I40E_FILTER_PCTYPE_FRAG_IPV4);
3031 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_UDP] =
3032 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_UDP);
3033 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_TCP] =
3034 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
3035 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_SCTP] =
3036 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_SCTP);
3037 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_OTHER] =
3038 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
3039 ad->pctypes_tbl[RTE_ETH_FLOW_FRAG_IPV6] =
3040 (1ULL << I40E_FILTER_PCTYPE_FRAG_IPV6);
3041 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_UDP] =
3042 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_UDP);
3043 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_TCP] =
3044 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
3045 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_SCTP] =
3046 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_SCTP);
3047 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_OTHER] =
3048 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
3049 ad->pctypes_tbl[RTE_ETH_FLOW_L2_PAYLOAD] =
3050 (1ULL << I40E_FILTER_PCTYPE_L2_PAYLOAD);
3052 if (hw->mac.type == I40E_MAC_X722) {
3053 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_UDP] |=
3054 (1ULL << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP);
3055 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_UDP] |=
3056 (1ULL << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);
3057 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV4_TCP] |=
3058 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3059 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_UDP] |=
3060 (1ULL << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP);
3061 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_UDP] |=
3062 (1ULL << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);
3063 ad->pctypes_tbl[RTE_ETH_FLOW_NONFRAG_IPV6_TCP] |=
3064 (1ULL << I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
3067 for (i = 0; i < I40E_FLOW_TYPE_MAX; i++) {
3068 if (ad->pctypes_tbl[i])
3069 ad->flow_types_mask |= (1ULL << i);
3070 ad->pctypes_mask |= ad->pctypes_tbl[i];
3074 /* Stubs needed for linkage when CONFIG_RTE_I40E_INC_VECTOR is set to 'n' */
3075 int __attribute__((weak))
3076 i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev __rte_unused *dev)
3081 uint16_t __attribute__((weak))
3083 void __rte_unused *rx_queue,
3084 struct rte_mbuf __rte_unused **rx_pkts,
3085 uint16_t __rte_unused nb_pkts)
3090 uint16_t __attribute__((weak))
3091 i40e_recv_scattered_pkts_vec(
3092 void __rte_unused *rx_queue,
3093 struct rte_mbuf __rte_unused **rx_pkts,
3094 uint16_t __rte_unused nb_pkts)
3099 uint16_t __attribute__((weak))
3100 i40e_recv_pkts_vec_avx2(void __rte_unused *rx_queue,
3101 struct rte_mbuf __rte_unused **rx_pkts,
3102 uint16_t __rte_unused nb_pkts)
3107 uint16_t __attribute__((weak))
3108 i40e_recv_scattered_pkts_vec_avx2(void __rte_unused *rx_queue,
3109 struct rte_mbuf __rte_unused **rx_pkts,
3110 uint16_t __rte_unused nb_pkts)
3115 int __attribute__((weak))
3116 i40e_rxq_vec_setup(struct i40e_rx_queue __rte_unused *rxq)
3121 int __attribute__((weak))
3122 i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused *txq)
3127 void __attribute__((weak))
3128 i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue __rte_unused*rxq)
3133 uint16_t __attribute__((weak))
3134 i40e_xmit_fixed_burst_vec(void __rte_unused * tx_queue,
3135 struct rte_mbuf __rte_unused **tx_pkts,
3136 uint16_t __rte_unused nb_pkts)
3141 uint16_t __attribute__((weak))
3142 i40e_xmit_pkts_vec_avx2(void __rte_unused * tx_queue,
3143 struct rte_mbuf __rte_unused **tx_pkts,
3144 uint16_t __rte_unused nb_pkts)