1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright(c) 2019-2021 Xilinx, Inc.
4 * Copyright(c) 2016-2019 Solarflare Communications Inc.
6 * This software was jointly developed between OKTET Labs (under contract
7 * for Solarflare) and Solarflare Communications, Inc.
10 #include <rte_mempool.h>
15 #include "sfc_debug.h"
19 #include "sfc_mae_counter.h"
20 #include "sfc_kvargs.h"
21 #include "sfc_tweak.h"
24 * Maximum number of Rx queue flush attempt in the case of failure or
27 #define SFC_RX_QFLUSH_ATTEMPTS (3)
30 * Time to wait between event queue polling attempts when waiting for Rx
31 * queue flush done or failed events.
33 #define SFC_RX_QFLUSH_POLL_WAIT_MS (1)
36 * Maximum number of event queue polling attempts when waiting for Rx queue
37 * flush done or failed events. It defines Rx queue flush attempt timeout
38 * together with SFC_RX_QFLUSH_POLL_WAIT_MS.
40 #define SFC_RX_QFLUSH_POLL_ATTEMPTS (2000)
43 sfc_rx_qflush_done(struct sfc_rxq_info *rxq_info)
45 rxq_info->state |= SFC_RXQ_FLUSHED;
46 rxq_info->state &= ~SFC_RXQ_FLUSHING;
50 sfc_rx_qflush_failed(struct sfc_rxq_info *rxq_info)
52 rxq_info->state |= SFC_RXQ_FLUSH_FAILED;
53 rxq_info->state &= ~SFC_RXQ_FLUSHING;
56 /* This returns the running counter, which is not bounded by ring size */
58 sfc_rx_get_pushed(struct sfc_adapter *sa, struct sfc_dp_rxq *dp_rxq)
60 SFC_ASSERT(sa->priv.dp_rx->get_pushed != NULL);
62 return sa->priv.dp_rx->get_pushed(dp_rxq);
66 sfc_efx_rx_qprime(struct sfc_efx_rxq *rxq)
70 if (rxq->evq->read_ptr_primed != rxq->evq->read_ptr) {
71 rc = efx_ev_qprime(rxq->evq->common, rxq->evq->read_ptr);
73 rxq->evq->read_ptr_primed = rxq->evq->read_ptr;
79 sfc_efx_rx_qrefill(struct sfc_efx_rxq *rxq)
81 unsigned int free_space;
83 void *objs[SFC_RX_REFILL_BULK];
84 efsys_dma_addr_t addr[RTE_DIM(objs)];
85 unsigned int added = rxq->added;
88 struct sfc_efx_rx_sw_desc *rxd;
90 uint16_t port_id = rxq->dp.dpq.port_id;
92 free_space = rxq->max_fill_level - (added - rxq->completed);
94 if (free_space < rxq->refill_threshold)
97 bulks = free_space / RTE_DIM(objs);
98 /* refill_threshold guarantees that bulks is positive */
99 SFC_ASSERT(bulks > 0);
101 id = added & rxq->ptr_mask;
103 if (unlikely(rte_mempool_get_bulk(rxq->refill_mb_pool, objs,
104 RTE_DIM(objs)) < 0)) {
106 * It is hardly a safe way to increment counter
107 * from different contexts, but all PMDs do it.
109 rxq->evq->sa->eth_dev->data->rx_mbuf_alloc_failed +=
111 /* Return if we have posted nothing yet */
112 if (added == rxq->added)
118 for (i = 0; i < RTE_DIM(objs);
119 ++i, id = (id + 1) & rxq->ptr_mask) {
122 __rte_mbuf_raw_sanity_check(m);
124 rxd = &rxq->sw_desc[id];
127 m->data_off = RTE_PKTMBUF_HEADROOM;
130 addr[i] = rte_pktmbuf_iova(m);
133 efx_rx_qpost(rxq->common, addr, rxq->buf_size,
134 RTE_DIM(objs), rxq->completed, added);
135 added += RTE_DIM(objs);
136 } while (--bulks > 0);
138 SFC_ASSERT(added != rxq->added);
140 efx_rx_qpush(rxq->common, added, &rxq->pushed);
141 rxq->dp.dpq.rx_dbells++;
145 sfc_efx_rx_desc_flags_to_offload_flags(const unsigned int desc_flags)
147 uint64_t mbuf_flags = 0;
149 switch (desc_flags & (EFX_PKT_IPV4 | EFX_CKSUM_IPV4)) {
150 case (EFX_PKT_IPV4 | EFX_CKSUM_IPV4):
151 mbuf_flags |= PKT_RX_IP_CKSUM_GOOD;
154 mbuf_flags |= PKT_RX_IP_CKSUM_BAD;
157 RTE_BUILD_BUG_ON(PKT_RX_IP_CKSUM_UNKNOWN != 0);
158 SFC_ASSERT((mbuf_flags & PKT_RX_IP_CKSUM_MASK) ==
159 PKT_RX_IP_CKSUM_UNKNOWN);
163 switch ((desc_flags &
164 (EFX_PKT_TCP | EFX_PKT_UDP | EFX_CKSUM_TCPUDP))) {
165 case (EFX_PKT_TCP | EFX_CKSUM_TCPUDP):
166 case (EFX_PKT_UDP | EFX_CKSUM_TCPUDP):
167 mbuf_flags |= PKT_RX_L4_CKSUM_GOOD;
171 mbuf_flags |= PKT_RX_L4_CKSUM_BAD;
174 RTE_BUILD_BUG_ON(PKT_RX_L4_CKSUM_UNKNOWN != 0);
175 SFC_ASSERT((mbuf_flags & PKT_RX_L4_CKSUM_MASK) ==
176 PKT_RX_L4_CKSUM_UNKNOWN);
184 sfc_efx_rx_desc_flags_to_packet_type(const unsigned int desc_flags)
186 return RTE_PTYPE_L2_ETHER |
187 ((desc_flags & EFX_PKT_IPV4) ?
188 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN : 0) |
189 ((desc_flags & EFX_PKT_IPV6) ?
190 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN : 0) |
191 ((desc_flags & EFX_PKT_TCP) ? RTE_PTYPE_L4_TCP : 0) |
192 ((desc_flags & EFX_PKT_UDP) ? RTE_PTYPE_L4_UDP : 0);
195 static const uint32_t *
196 sfc_efx_supported_ptypes_get(__rte_unused uint32_t tunnel_encaps)
198 static const uint32_t ptypes[] = {
200 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
201 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
211 sfc_efx_rx_set_rss_hash(struct sfc_efx_rxq *rxq, unsigned int flags,
217 if ((rxq->flags & SFC_EFX_RXQ_FLAG_RSS_HASH) == 0)
220 mbuf_data = rte_pktmbuf_mtod(m, uint8_t *);
222 if (flags & (EFX_PKT_IPV4 | EFX_PKT_IPV6)) {
223 m->hash.rss = efx_pseudo_hdr_hash_get(rxq->common,
224 EFX_RX_HASHALG_TOEPLITZ,
227 m->ol_flags |= PKT_RX_RSS_HASH;
232 sfc_efx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
234 struct sfc_dp_rxq *dp_rxq = rx_queue;
235 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
236 unsigned int completed;
237 unsigned int prefix_size = rxq->prefix_size;
238 unsigned int done_pkts = 0;
239 boolean_t discard_next = B_FALSE;
240 struct rte_mbuf *scatter_pkt = NULL;
242 if (unlikely((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) == 0))
245 sfc_ev_qpoll(rxq->evq);
247 completed = rxq->completed;
248 while (completed != rxq->pending && done_pkts < nb_pkts) {
250 struct sfc_efx_rx_sw_desc *rxd;
252 unsigned int seg_len;
253 unsigned int desc_flags;
255 id = completed++ & rxq->ptr_mask;
256 rxd = &rxq->sw_desc[id];
258 desc_flags = rxd->flags;
263 if (desc_flags & (EFX_ADDR_MISMATCH | EFX_DISCARD))
266 if (desc_flags & EFX_PKT_PREFIX_LEN) {
270 rc = efx_pseudo_hdr_pkt_length_get(rxq->common,
271 rte_pktmbuf_mtod(m, uint8_t *), &tmp_size);
275 seg_len = rxd->size - prefix_size;
278 rte_pktmbuf_data_len(m) = seg_len;
279 rte_pktmbuf_pkt_len(m) = seg_len;
281 if (scatter_pkt != NULL) {
282 if (rte_pktmbuf_chain(scatter_pkt, m) != 0) {
283 rte_pktmbuf_free(scatter_pkt);
286 /* The packet to deliver */
290 if (desc_flags & EFX_PKT_CONT) {
291 /* The packet is scattered, more fragments to come */
293 /* Further fragments have no prefix */
298 /* Scattered packet is done */
300 /* The first fragment of the packet has prefix */
301 prefix_size = rxq->prefix_size;
304 sfc_efx_rx_desc_flags_to_offload_flags(desc_flags);
306 sfc_efx_rx_desc_flags_to_packet_type(desc_flags);
309 * Extract RSS hash from the packet prefix and
310 * set the corresponding field (if needed and possible)
312 sfc_efx_rx_set_rss_hash(rxq, desc_flags, m);
314 m->data_off += prefix_size;
321 discard_next = ((desc_flags & EFX_PKT_CONT) != 0);
322 rte_mbuf_raw_free(m);
326 /* pending is only moved when entire packet is received */
327 SFC_ASSERT(scatter_pkt == NULL);
329 rxq->completed = completed;
331 sfc_efx_rx_qrefill(rxq);
333 if (rxq->flags & SFC_EFX_RXQ_FLAG_INTR_EN)
334 sfc_efx_rx_qprime(rxq);
339 static sfc_dp_rx_qdesc_npending_t sfc_efx_rx_qdesc_npending;
341 sfc_efx_rx_qdesc_npending(struct sfc_dp_rxq *dp_rxq)
343 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
345 if ((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) == 0)
348 sfc_ev_qpoll(rxq->evq);
350 return rxq->pending - rxq->completed;
353 static sfc_dp_rx_qdesc_status_t sfc_efx_rx_qdesc_status;
355 sfc_efx_rx_qdesc_status(struct sfc_dp_rxq *dp_rxq, uint16_t offset)
357 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
359 if (unlikely(offset > rxq->ptr_mask))
363 * Poll EvQ to derive up-to-date 'rxq->pending' figure;
364 * it is required for the queue to be running, but the
365 * check is omitted because API design assumes that it
366 * is the duty of the caller to satisfy all conditions
368 SFC_ASSERT((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) ==
369 SFC_EFX_RXQ_FLAG_RUNNING);
370 sfc_ev_qpoll(rxq->evq);
373 * There is a handful of reserved entries in the ring,
374 * but an explicit check whether the offset points to
375 * a reserved entry is neglected since the two checks
376 * below rely on the figures which take the HW limits
377 * into account and thus if an entry is reserved, the
378 * checks will fail and UNAVAIL code will be returned
381 if (offset < (rxq->pending - rxq->completed))
382 return RTE_ETH_RX_DESC_DONE;
384 if (offset < (rxq->added - rxq->completed))
385 return RTE_ETH_RX_DESC_AVAIL;
387 return RTE_ETH_RX_DESC_UNAVAIL;
391 sfc_rx_check_scatter(size_t pdu, size_t rx_buf_size, uint32_t rx_prefix_size,
392 boolean_t rx_scatter_enabled, uint32_t rx_scatter_max,
395 uint32_t effective_rx_scatter_max;
396 uint32_t rx_scatter_bufs;
398 effective_rx_scatter_max = rx_scatter_enabled ? rx_scatter_max : 1;
399 rx_scatter_bufs = EFX_DIV_ROUND_UP(pdu + rx_prefix_size, rx_buf_size);
401 if (rx_scatter_bufs > effective_rx_scatter_max) {
402 if (rx_scatter_enabled)
403 *error = "Possible number of Rx scatter buffers exceeds maximum number";
405 *error = "Rx scatter is disabled and RxQ mbuf pool object size is too small";
412 /** Get Rx datapath ops by the datapath RxQ handle */
413 const struct sfc_dp_rx *
414 sfc_dp_rx_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
416 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
417 struct rte_eth_dev *eth_dev;
418 struct sfc_adapter_priv *sap;
420 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
421 eth_dev = &rte_eth_devices[dpq->port_id];
423 sap = sfc_adapter_priv_by_eth_dev(eth_dev);
428 struct sfc_rxq_info *
429 sfc_rxq_info_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
431 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
432 struct rte_eth_dev *eth_dev;
433 struct sfc_adapter_shared *sas;
435 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
436 eth_dev = &rte_eth_devices[dpq->port_id];
438 sas = sfc_adapter_shared_by_eth_dev(eth_dev);
440 SFC_ASSERT(dpq->queue_id < sas->rxq_count);
441 return &sas->rxq_info[dpq->queue_id];
445 sfc_rxq_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
447 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
448 struct rte_eth_dev *eth_dev;
449 struct sfc_adapter *sa;
451 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
452 eth_dev = &rte_eth_devices[dpq->port_id];
454 sa = sfc_adapter_by_eth_dev(eth_dev);
456 SFC_ASSERT(dpq->queue_id < sfc_sa2shared(sa)->rxq_count);
457 return &sa->rxq_ctrl[dpq->queue_id];
460 static sfc_dp_rx_qsize_up_rings_t sfc_efx_rx_qsize_up_rings;
462 sfc_efx_rx_qsize_up_rings(uint16_t nb_rx_desc,
463 __rte_unused struct sfc_dp_rx_hw_limits *limits,
464 __rte_unused struct rte_mempool *mb_pool,
465 unsigned int *rxq_entries,
466 unsigned int *evq_entries,
467 unsigned int *rxq_max_fill_level)
469 *rxq_entries = nb_rx_desc;
470 *evq_entries = nb_rx_desc;
471 *rxq_max_fill_level = EFX_RXQ_LIMIT(*rxq_entries);
475 static sfc_dp_rx_qcreate_t sfc_efx_rx_qcreate;
477 sfc_efx_rx_qcreate(uint16_t port_id, uint16_t queue_id,
478 const struct rte_pci_addr *pci_addr, int socket_id,
479 const struct sfc_dp_rx_qcreate_info *info,
480 struct sfc_dp_rxq **dp_rxqp)
482 struct sfc_efx_rxq *rxq;
486 rxq = rte_zmalloc_socket("sfc-efx-rxq", sizeof(*rxq),
487 RTE_CACHE_LINE_SIZE, socket_id);
491 sfc_dp_queue_init(&rxq->dp.dpq, port_id, queue_id, pci_addr);
494 rxq->sw_desc = rte_calloc_socket("sfc-efx-rxq-sw_desc",
496 sizeof(*rxq->sw_desc),
497 RTE_CACHE_LINE_SIZE, socket_id);
498 if (rxq->sw_desc == NULL)
499 goto fail_desc_alloc;
501 /* efx datapath is bound to efx control path */
502 rxq->evq = sfc_rxq_by_dp_rxq(&rxq->dp)->evq;
503 if (info->flags & SFC_RXQ_FLAG_RSS_HASH)
504 rxq->flags |= SFC_EFX_RXQ_FLAG_RSS_HASH;
505 rxq->ptr_mask = info->rxq_entries - 1;
506 rxq->batch_max = info->batch_max;
507 rxq->prefix_size = info->prefix_size;
508 rxq->max_fill_level = info->max_fill_level;
509 rxq->refill_threshold = info->refill_threshold;
510 rxq->buf_size = info->buf_size;
511 rxq->refill_mb_pool = info->refill_mb_pool;
523 static sfc_dp_rx_qdestroy_t sfc_efx_rx_qdestroy;
525 sfc_efx_rx_qdestroy(struct sfc_dp_rxq *dp_rxq)
527 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
529 rte_free(rxq->sw_desc);
534 /* Use qstop and qstart functions in the case of qstart failure */
535 static sfc_dp_rx_qstop_t sfc_efx_rx_qstop;
536 static sfc_dp_rx_qpurge_t sfc_efx_rx_qpurge;
539 static sfc_dp_rx_qstart_t sfc_efx_rx_qstart;
541 sfc_efx_rx_qstart(struct sfc_dp_rxq *dp_rxq,
542 __rte_unused unsigned int evq_read_ptr,
543 const efx_rx_prefix_layout_t *pinfo)
545 /* libefx-based datapath is specific to libefx-based PMD */
546 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
547 struct sfc_rxq *crxq = sfc_rxq_by_dp_rxq(dp_rxq);
551 * libefx API is used to extract information from Rx prefix and
552 * it guarantees consistency. Just do length check to ensure
553 * that we reserved space in Rx buffers correctly.
555 if (rxq->prefix_size != pinfo->erpl_length)
558 rxq->common = crxq->common;
560 rxq->pending = rxq->completed = rxq->added = rxq->pushed = 0;
562 sfc_efx_rx_qrefill(rxq);
564 rxq->flags |= (SFC_EFX_RXQ_FLAG_STARTED | SFC_EFX_RXQ_FLAG_RUNNING);
566 if (rxq->flags & SFC_EFX_RXQ_FLAG_INTR_EN) {
567 rc = sfc_efx_rx_qprime(rxq);
575 sfc_efx_rx_qstop(dp_rxq, NULL);
576 sfc_efx_rx_qpurge(dp_rxq);
581 sfc_efx_rx_qstop(struct sfc_dp_rxq *dp_rxq,
582 __rte_unused unsigned int *evq_read_ptr)
584 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
586 rxq->flags &= ~SFC_EFX_RXQ_FLAG_RUNNING;
588 /* libefx-based datapath is bound to libefx-based PMD and uses
589 * event queue structure directly. So, there is no necessity to
590 * return EvQ read pointer.
595 sfc_efx_rx_qpurge(struct sfc_dp_rxq *dp_rxq)
597 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
599 struct sfc_efx_rx_sw_desc *rxd;
601 for (i = rxq->completed; i != rxq->added; ++i) {
602 rxd = &rxq->sw_desc[i & rxq->ptr_mask];
603 rte_mbuf_raw_free(rxd->mbuf);
605 /* Packed stream relies on 0 in inactive SW desc.
606 * Rx queue stop is not performance critical, so
607 * there is no harm to do it always.
613 rxq->flags &= ~SFC_EFX_RXQ_FLAG_STARTED;
616 static sfc_dp_rx_intr_enable_t sfc_efx_rx_intr_enable;
618 sfc_efx_rx_intr_enable(struct sfc_dp_rxq *dp_rxq)
620 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
623 rxq->flags |= SFC_EFX_RXQ_FLAG_INTR_EN;
624 if (rxq->flags & SFC_EFX_RXQ_FLAG_STARTED) {
625 rc = sfc_efx_rx_qprime(rxq);
627 rxq->flags &= ~SFC_EFX_RXQ_FLAG_INTR_EN;
632 static sfc_dp_rx_intr_disable_t sfc_efx_rx_intr_disable;
634 sfc_efx_rx_intr_disable(struct sfc_dp_rxq *dp_rxq)
636 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
638 /* Cannot disarm, just disable rearm */
639 rxq->flags &= ~SFC_EFX_RXQ_FLAG_INTR_EN;
643 struct sfc_dp_rx sfc_efx_rx = {
645 .name = SFC_KVARG_DATAPATH_EFX,
647 .hw_fw_caps = SFC_DP_HW_FW_CAP_RX_EFX,
649 .features = SFC_DP_RX_FEAT_INTR,
650 .dev_offload_capa = DEV_RX_OFFLOAD_CHECKSUM |
651 DEV_RX_OFFLOAD_RSS_HASH,
652 .queue_offload_capa = DEV_RX_OFFLOAD_SCATTER,
653 .qsize_up_rings = sfc_efx_rx_qsize_up_rings,
654 .qcreate = sfc_efx_rx_qcreate,
655 .qdestroy = sfc_efx_rx_qdestroy,
656 .qstart = sfc_efx_rx_qstart,
657 .qstop = sfc_efx_rx_qstop,
658 .qpurge = sfc_efx_rx_qpurge,
659 .supported_ptypes_get = sfc_efx_supported_ptypes_get,
660 .qdesc_npending = sfc_efx_rx_qdesc_npending,
661 .qdesc_status = sfc_efx_rx_qdesc_status,
662 .intr_enable = sfc_efx_rx_intr_enable,
663 .intr_disable = sfc_efx_rx_intr_disable,
664 .pkt_burst = sfc_efx_recv_pkts,
668 sfc_rx_qflush(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
670 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
671 sfc_ethdev_qid_t ethdev_qid;
672 struct sfc_rxq_info *rxq_info;
674 unsigned int retry_count;
675 unsigned int wait_count;
678 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
679 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
680 SFC_ASSERT(rxq_info->state & SFC_RXQ_STARTED);
682 rxq = &sa->rxq_ctrl[sw_index];
685 * Retry Rx queue flushing in the case of flush failed or
686 * timeout. In the worst case it can delay for 6 seconds.
688 for (retry_count = 0;
689 ((rxq_info->state & SFC_RXQ_FLUSHED) == 0) &&
690 (retry_count < SFC_RX_QFLUSH_ATTEMPTS);
692 rc = efx_rx_qflush(rxq->common);
694 rxq_info->state |= (rc == EALREADY) ?
695 SFC_RXQ_FLUSHED : SFC_RXQ_FLUSH_FAILED;
698 rxq_info->state &= ~SFC_RXQ_FLUSH_FAILED;
699 rxq_info->state |= SFC_RXQ_FLUSHING;
702 * Wait for Rx queue flush done or failed event at least
703 * SFC_RX_QFLUSH_POLL_WAIT_MS milliseconds and not more
704 * than 2 seconds (SFC_RX_QFLUSH_POLL_WAIT_MS multiplied
705 * by SFC_RX_QFLUSH_POLL_ATTEMPTS).
709 rte_delay_ms(SFC_RX_QFLUSH_POLL_WAIT_MS);
710 sfc_ev_qpoll(rxq->evq);
711 } while ((rxq_info->state & SFC_RXQ_FLUSHING) &&
712 (wait_count++ < SFC_RX_QFLUSH_POLL_ATTEMPTS));
714 if (rxq_info->state & SFC_RXQ_FLUSHING)
715 sfc_err(sa, "RxQ %d (internal %u) flush timed out",
716 ethdev_qid, sw_index);
718 if (rxq_info->state & SFC_RXQ_FLUSH_FAILED)
719 sfc_err(sa, "RxQ %d (internal %u) flush failed",
720 ethdev_qid, sw_index);
722 if (rxq_info->state & SFC_RXQ_FLUSHED)
723 sfc_notice(sa, "RxQ %d (internal %u) flushed",
724 ethdev_qid, sw_index);
727 sa->priv.dp_rx->qpurge(rxq_info->dp);
731 sfc_rx_default_rxq_set_filter(struct sfc_adapter *sa, struct sfc_rxq *rxq)
733 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
734 boolean_t need_rss = (rss->channels > 0) ? B_TRUE : B_FALSE;
735 struct sfc_port *port = &sa->port;
739 * If promiscuous or all-multicast mode has been requested, setting
740 * filter for the default Rx queue might fail, in particular, while
741 * running over PCI function which is not a member of corresponding
742 * privilege groups; if this occurs, few iterations will be made to
743 * repeat this step without promiscuous and all-multicast flags set
746 rc = efx_mac_filter_default_rxq_set(sa->nic, rxq->common, need_rss);
749 else if (rc != EOPNOTSUPP)
753 sfc_warn(sa, "promiscuous mode has been requested, "
754 "but the HW rejects it");
755 sfc_warn(sa, "promiscuous mode will be disabled");
757 port->promisc = B_FALSE;
758 sa->eth_dev->data->promiscuous = 0;
759 rc = sfc_set_rx_mode_unchecked(sa);
766 if (port->allmulti) {
767 sfc_warn(sa, "all-multicast mode has been requested, "
768 "but the HW rejects it");
769 sfc_warn(sa, "all-multicast mode will be disabled");
771 port->allmulti = B_FALSE;
772 sa->eth_dev->data->all_multicast = 0;
773 rc = sfc_set_rx_mode_unchecked(sa);
784 sfc_rx_qstart(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
786 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
787 sfc_ethdev_qid_t ethdev_qid;
788 struct sfc_rxq_info *rxq_info;
791 efx_rx_prefix_layout_t pinfo;
794 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
795 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
797 sfc_log_init(sa, "RxQ %d (internal %u)", ethdev_qid, sw_index);
799 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
800 SFC_ASSERT(rxq_info->state == SFC_RXQ_INITIALIZED);
802 rxq = &sa->rxq_ctrl[sw_index];
805 rc = sfc_ev_qstart(evq, sfc_evq_sw_index_by_rxq_sw_index(sa, sw_index));
809 switch (rxq_info->type) {
810 case EFX_RXQ_TYPE_DEFAULT:
811 rc = efx_rx_qcreate(sa->nic, rxq->hw_index, 0, rxq_info->type,
813 &rxq->mem, rxq_info->entries, 0 /* not used on EF10 */,
814 rxq_info->type_flags, evq->common, &rxq->common);
816 case EFX_RXQ_TYPE_ES_SUPER_BUFFER: {
817 struct rte_mempool *mp = rxq_info->refill_mb_pool;
818 struct rte_mempool_info mp_info;
820 rc = rte_mempool_ops_get_info(mp, &mp_info);
822 /* Positive errno is used in the driver */
824 goto fail_mp_get_info;
826 if (mp_info.contig_block_size <= 0) {
828 goto fail_bad_contig_block_size;
830 rc = efx_rx_qcreate_es_super_buffer(sa->nic, rxq->hw_index, 0,
831 mp_info.contig_block_size, rxq->buf_size,
832 mp->header_size + mp->elt_size + mp->trailer_size,
833 sa->rxd_wait_timeout_ns,
834 &rxq->mem, rxq_info->entries, rxq_info->type_flags,
835 evq->common, &rxq->common);
842 goto fail_rx_qcreate;
844 rc = efx_rx_prefix_get_layout(rxq->common, &pinfo);
846 goto fail_prefix_get_layout;
848 efx_rx_qenable(rxq->common);
850 rc = sa->priv.dp_rx->qstart(rxq_info->dp, evq->read_ptr, &pinfo);
854 rxq_info->state |= SFC_RXQ_STARTED;
856 if (ethdev_qid == 0 && !sfc_sa2shared(sa)->isolated) {
857 rc = sfc_rx_default_rxq_set_filter(sa, rxq);
859 goto fail_mac_filter_default_rxq_set;
862 /* It seems to be used by DPDK for debug purposes only ('rte_ether') */
863 if (ethdev_qid != SFC_ETHDEV_QID_INVALID)
864 sa->eth_dev->data->rx_queue_state[ethdev_qid] =
865 RTE_ETH_QUEUE_STATE_STARTED;
869 fail_mac_filter_default_rxq_set:
870 sfc_rx_qflush(sa, sw_index);
871 sa->priv.dp_rx->qstop(rxq_info->dp, &rxq->evq->read_ptr);
872 rxq_info->state = SFC_RXQ_INITIALIZED;
875 efx_rx_qdestroy(rxq->common);
877 fail_prefix_get_layout:
879 fail_bad_contig_block_size:
888 sfc_rx_qstop(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
890 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
891 sfc_ethdev_qid_t ethdev_qid;
892 struct sfc_rxq_info *rxq_info;
895 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
896 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
898 sfc_log_init(sa, "RxQ %d (internal %u)", ethdev_qid, sw_index);
900 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
902 if (rxq_info->state == SFC_RXQ_INITIALIZED)
904 SFC_ASSERT(rxq_info->state & SFC_RXQ_STARTED);
906 /* It seems to be used by DPDK for debug purposes only ('rte_ether') */
907 if (ethdev_qid != SFC_ETHDEV_QID_INVALID)
908 sa->eth_dev->data->rx_queue_state[ethdev_qid] =
909 RTE_ETH_QUEUE_STATE_STOPPED;
911 rxq = &sa->rxq_ctrl[sw_index];
912 sa->priv.dp_rx->qstop(rxq_info->dp, &rxq->evq->read_ptr);
915 efx_mac_filter_default_rxq_clear(sa->nic);
917 sfc_rx_qflush(sa, sw_index);
919 rxq_info->state = SFC_RXQ_INITIALIZED;
921 efx_rx_qdestroy(rxq->common);
923 sfc_ev_qstop(rxq->evq);
927 sfc_rx_get_offload_mask(struct sfc_adapter *sa)
929 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
930 uint64_t no_caps = 0;
932 if (encp->enc_tunnel_encapsulations_supported == 0)
933 no_caps |= DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM;
939 sfc_rx_get_dev_offload_caps(struct sfc_adapter *sa)
941 uint64_t caps = sa->priv.dp_rx->dev_offload_capa;
943 caps |= DEV_RX_OFFLOAD_JUMBO_FRAME;
945 return caps & sfc_rx_get_offload_mask(sa);
949 sfc_rx_get_queue_offload_caps(struct sfc_adapter *sa)
951 return sa->priv.dp_rx->queue_offload_capa & sfc_rx_get_offload_mask(sa);
955 sfc_rx_qcheck_conf(struct sfc_adapter *sa, unsigned int rxq_max_fill_level,
956 const struct rte_eth_rxconf *rx_conf,
957 __rte_unused uint64_t offloads)
961 if (rx_conf->rx_thresh.pthresh != 0 ||
962 rx_conf->rx_thresh.hthresh != 0 ||
963 rx_conf->rx_thresh.wthresh != 0) {
965 "RxQ prefetch/host/writeback thresholds are not supported");
968 if (rx_conf->rx_free_thresh > rxq_max_fill_level) {
970 "RxQ free threshold too large: %u vs maximum %u",
971 rx_conf->rx_free_thresh, rxq_max_fill_level);
975 if (rx_conf->rx_drop_en == 0) {
976 sfc_err(sa, "RxQ drop disable is not supported");
984 sfc_rx_mbuf_data_alignment(struct rte_mempool *mb_pool)
989 /* The mbuf object itself is always cache line aligned */
990 order = rte_bsf32(RTE_CACHE_LINE_SIZE);
992 /* Data offset from mbuf object start */
993 data_off = sizeof(struct rte_mbuf) + rte_pktmbuf_priv_size(mb_pool) +
994 RTE_PKTMBUF_HEADROOM;
996 order = MIN(order, rte_bsf32(data_off));
1002 sfc_rx_mb_pool_buf_size(struct sfc_adapter *sa, struct rte_mempool *mb_pool)
1004 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1005 const uint32_t nic_align_start = MAX(1, encp->enc_rx_buf_align_start);
1006 const uint32_t nic_align_end = MAX(1, encp->enc_rx_buf_align_end);
1008 unsigned int buf_aligned;
1009 unsigned int start_alignment;
1010 unsigned int end_padding_alignment;
1012 /* Below it is assumed that both alignments are power of 2 */
1013 SFC_ASSERT(rte_is_power_of_2(nic_align_start));
1014 SFC_ASSERT(rte_is_power_of_2(nic_align_end));
1017 * mbuf is always cache line aligned, double-check
1018 * that it meets rx buffer start alignment requirements.
1021 /* Start from mbuf pool data room size */
1022 buf_size = rte_pktmbuf_data_room_size(mb_pool);
1024 /* Remove headroom */
1025 if (buf_size <= RTE_PKTMBUF_HEADROOM) {
1027 "RxQ mbuf pool %s object data room size %u is smaller than headroom %u",
1028 mb_pool->name, buf_size, RTE_PKTMBUF_HEADROOM);
1031 buf_size -= RTE_PKTMBUF_HEADROOM;
1033 /* Calculate guaranteed data start alignment */
1034 buf_aligned = sfc_rx_mbuf_data_alignment(mb_pool);
1036 /* Reserve space for start alignment */
1037 if (buf_aligned < nic_align_start) {
1038 start_alignment = nic_align_start - buf_aligned;
1039 if (buf_size <= start_alignment) {
1041 "RxQ mbuf pool %s object data room size %u is insufficient for headroom %u and buffer start alignment %u required by NIC",
1043 rte_pktmbuf_data_room_size(mb_pool),
1044 RTE_PKTMBUF_HEADROOM, start_alignment);
1047 buf_aligned = nic_align_start;
1048 buf_size -= start_alignment;
1050 start_alignment = 0;
1053 /* Make sure that end padding does not write beyond the buffer */
1054 if (buf_aligned < nic_align_end) {
1056 * Estimate space which can be lost. If guarnteed buffer
1057 * size is odd, lost space is (nic_align_end - 1). More
1058 * accurate formula is below.
1060 end_padding_alignment = nic_align_end -
1061 MIN(buf_aligned, 1u << (rte_bsf32(buf_size) - 1));
1062 if (buf_size <= end_padding_alignment) {
1064 "RxQ mbuf pool %s object data room size %u is insufficient for headroom %u, buffer start alignment %u and end padding alignment %u required by NIC",
1066 rte_pktmbuf_data_room_size(mb_pool),
1067 RTE_PKTMBUF_HEADROOM, start_alignment,
1068 end_padding_alignment);
1071 buf_size -= end_padding_alignment;
1074 * Start is aligned the same or better than end,
1075 * just align length.
1077 buf_size = EFX_P2ALIGN(uint32_t, buf_size, nic_align_end);
1084 sfc_rx_qinit(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
1085 uint16_t nb_rx_desc, unsigned int socket_id,
1086 const struct rte_eth_rxconf *rx_conf,
1087 struct rte_mempool *mb_pool)
1089 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
1090 sfc_ethdev_qid_t ethdev_qid;
1091 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1092 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1094 unsigned int rxq_entries;
1095 unsigned int evq_entries;
1096 unsigned int rxq_max_fill_level;
1099 struct sfc_rxq_info *rxq_info;
1100 struct sfc_evq *evq;
1101 struct sfc_rxq *rxq;
1102 struct sfc_dp_rx_qcreate_info info;
1103 struct sfc_dp_rx_hw_limits hw_limits;
1104 uint16_t rx_free_thresh;
1107 memset(&hw_limits, 0, sizeof(hw_limits));
1108 hw_limits.rxq_max_entries = sa->rxq_max_entries;
1109 hw_limits.rxq_min_entries = sa->rxq_min_entries;
1110 hw_limits.evq_max_entries = sa->evq_max_entries;
1111 hw_limits.evq_min_entries = sa->evq_min_entries;
1113 rc = sa->priv.dp_rx->qsize_up_rings(nb_rx_desc, &hw_limits, mb_pool,
1114 &rxq_entries, &evq_entries,
1115 &rxq_max_fill_level);
1117 goto fail_size_up_rings;
1118 SFC_ASSERT(rxq_entries >= sa->rxq_min_entries);
1119 SFC_ASSERT(rxq_entries <= sa->rxq_max_entries);
1120 SFC_ASSERT(rxq_max_fill_level <= nb_rx_desc);
1122 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
1124 offloads = rx_conf->offloads;
1125 /* Add device level Rx offloads if the queue is an ethdev Rx queue */
1126 if (ethdev_qid != SFC_ETHDEV_QID_INVALID)
1127 offloads |= sa->eth_dev->data->dev_conf.rxmode.offloads;
1129 rc = sfc_rx_qcheck_conf(sa, rxq_max_fill_level, rx_conf, offloads);
1133 buf_size = sfc_rx_mb_pool_buf_size(sa, mb_pool);
1134 if (buf_size == 0) {
1136 "RxQ %d (internal %u) mbuf pool object size is too small",
1137 ethdev_qid, sw_index);
1142 if (!sfc_rx_check_scatter(sa->port.pdu, buf_size,
1143 encp->enc_rx_prefix_size,
1144 (offloads & DEV_RX_OFFLOAD_SCATTER),
1145 encp->enc_rx_scatter_max,
1147 sfc_err(sa, "RxQ %d (internal %u) MTU check failed: %s",
1148 ethdev_qid, sw_index, error);
1150 "RxQ %d (internal %u) calculated Rx buffer size is %u vs "
1151 "PDU size %u plus Rx prefix %u bytes",
1152 ethdev_qid, sw_index, buf_size,
1153 (unsigned int)sa->port.pdu, encp->enc_rx_prefix_size);
1158 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
1159 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
1161 SFC_ASSERT(rxq_entries <= rxq_info->max_entries);
1162 rxq_info->entries = rxq_entries;
1164 if (sa->priv.dp_rx->dp.hw_fw_caps & SFC_DP_HW_FW_CAP_RX_ES_SUPER_BUFFER)
1165 rxq_info->type = EFX_RXQ_TYPE_ES_SUPER_BUFFER;
1167 rxq_info->type = EFX_RXQ_TYPE_DEFAULT;
1169 rxq_info->type_flags |=
1170 (offloads & DEV_RX_OFFLOAD_SCATTER) ?
1171 EFX_RXQ_FLAG_SCATTER : EFX_RXQ_FLAG_NONE;
1173 if ((encp->enc_tunnel_encapsulations_supported != 0) &&
1174 (sfc_dp_rx_offload_capa(sa->priv.dp_rx) &
1175 DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM) != 0)
1176 rxq_info->type_flags |= EFX_RXQ_FLAG_INNER_CLASSES;
1178 if (offloads & DEV_RX_OFFLOAD_RSS_HASH)
1179 rxq_info->type_flags |= EFX_RXQ_FLAG_RSS_HASH;
1181 if ((sa->negotiated_rx_metadata & RTE_ETH_RX_METADATA_USER_MARK) != 0)
1182 rxq_info->type_flags |= EFX_RXQ_FLAG_USER_MARK;
1184 rc = sfc_ev_qinit(sa, SFC_EVQ_TYPE_RX, sw_index,
1185 evq_entries, socket_id, &evq);
1189 rxq = &sa->rxq_ctrl[sw_index];
1191 rxq->hw_index = sw_index;
1193 * If Rx refill threshold is specified (its value is non zero) in
1194 * Rx configuration, use specified value. Otherwise use 1/8 of
1195 * the Rx descriptors number as the default. It allows to keep
1196 * Rx ring full-enough and does not refill too aggressive if
1197 * packet rate is high.
1199 * Since PMD refills in bulks waiting for full bulk may be
1200 * refilled (basically round down), it is better to round up
1201 * here to mitigate it a bit.
1203 rx_free_thresh = (rx_conf->rx_free_thresh != 0) ?
1204 rx_conf->rx_free_thresh : EFX_DIV_ROUND_UP(nb_rx_desc, 8);
1205 /* Rx refill threshold cannot be smaller than refill bulk */
1206 rxq_info->refill_threshold =
1207 RTE_MAX(rx_free_thresh, SFC_RX_REFILL_BULK);
1208 rxq_info->refill_mb_pool = mb_pool;
1210 if (rss->hash_support == EFX_RX_HASH_AVAILABLE && rss->channels > 0 &&
1211 (offloads & DEV_RX_OFFLOAD_RSS_HASH))
1212 rxq_info->rxq_flags = SFC_RXQ_FLAG_RSS_HASH;
1214 rxq_info->rxq_flags = 0;
1216 rxq->buf_size = buf_size;
1218 rc = sfc_dma_alloc(sa, "rxq", sw_index,
1219 efx_rxq_size(sa->nic, rxq_info->entries),
1220 socket_id, &rxq->mem);
1222 goto fail_dma_alloc;
1224 memset(&info, 0, sizeof(info));
1225 info.refill_mb_pool = rxq_info->refill_mb_pool;
1226 info.max_fill_level = rxq_max_fill_level;
1227 info.refill_threshold = rxq_info->refill_threshold;
1228 info.buf_size = buf_size;
1229 info.batch_max = encp->enc_rx_batch_max;
1230 info.prefix_size = encp->enc_rx_prefix_size;
1231 info.flags = rxq_info->rxq_flags;
1232 info.rxq_entries = rxq_info->entries;
1233 info.rxq_hw_ring = rxq->mem.esm_base;
1234 info.evq_hw_index = sfc_evq_sw_index_by_rxq_sw_index(sa, sw_index);
1235 info.evq_entries = evq_entries;
1236 info.evq_hw_ring = evq->mem.esm_base;
1237 info.hw_index = rxq->hw_index;
1238 info.mem_bar = sa->mem_bar.esb_base;
1239 info.vi_window_shift = encp->enc_vi_window_shift;
1240 info.fcw_offset = sa->fcw_offset;
1242 rc = sa->priv.dp_rx->qcreate(sa->eth_dev->data->port_id, sw_index,
1243 &RTE_ETH_DEV_TO_PCI(sa->eth_dev)->addr,
1244 socket_id, &info, &rxq_info->dp);
1246 goto fail_dp_rx_qcreate;
1248 evq->dp_rxq = rxq_info->dp;
1250 rxq_info->state = SFC_RXQ_INITIALIZED;
1252 rxq_info->deferred_start = (rx_conf->rx_deferred_start != 0);
1257 sfc_dma_free(sa, &rxq->mem);
1263 rxq_info->entries = 0;
1267 sfc_log_init(sa, "failed %d", rc);
1272 sfc_rx_qfini(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
1274 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
1275 sfc_ethdev_qid_t ethdev_qid;
1276 struct sfc_rxq_info *rxq_info;
1277 struct sfc_rxq *rxq;
1279 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
1280 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
1282 if (ethdev_qid != SFC_ETHDEV_QID_INVALID)
1283 sa->eth_dev->data->rx_queues[ethdev_qid] = NULL;
1285 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
1287 SFC_ASSERT(rxq_info->state == SFC_RXQ_INITIALIZED);
1289 sa->priv.dp_rx->qdestroy(rxq_info->dp);
1290 rxq_info->dp = NULL;
1292 rxq_info->state &= ~SFC_RXQ_INITIALIZED;
1293 rxq_info->entries = 0;
1295 rxq = &sa->rxq_ctrl[sw_index];
1297 sfc_dma_free(sa, &rxq->mem);
1299 sfc_ev_qfini(rxq->evq);
1304 * Mapping between RTE RSS hash functions and their EFX counterparts.
1306 static const struct sfc_rss_hf_rte_to_efx sfc_rss_hf_map[] = {
1307 { ETH_RSS_NONFRAG_IPV4_TCP,
1308 EFX_RX_HASH(IPV4_TCP, 4TUPLE) },
1309 { ETH_RSS_NONFRAG_IPV4_UDP,
1310 EFX_RX_HASH(IPV4_UDP, 4TUPLE) },
1311 { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_IPV6_TCP_EX,
1312 EFX_RX_HASH(IPV6_TCP, 4TUPLE) },
1313 { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_IPV6_UDP_EX,
1314 EFX_RX_HASH(IPV6_UDP, 4TUPLE) },
1315 { ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | ETH_RSS_NONFRAG_IPV4_OTHER,
1316 EFX_RX_HASH(IPV4_TCP, 2TUPLE) | EFX_RX_HASH(IPV4_UDP, 2TUPLE) |
1317 EFX_RX_HASH(IPV4, 2TUPLE) },
1318 { ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | ETH_RSS_NONFRAG_IPV6_OTHER |
1320 EFX_RX_HASH(IPV6_TCP, 2TUPLE) | EFX_RX_HASH(IPV6_UDP, 2TUPLE) |
1321 EFX_RX_HASH(IPV6, 2TUPLE) }
1324 static efx_rx_hash_type_t
1325 sfc_rx_hash_types_mask_supp(efx_rx_hash_type_t hash_type,
1326 unsigned int *hash_type_flags_supported,
1327 unsigned int nb_hash_type_flags_supported)
1329 efx_rx_hash_type_t hash_type_masked = 0;
1332 for (i = 0; i < nb_hash_type_flags_supported; ++i) {
1333 unsigned int class_tuple_lbn[] = {
1334 EFX_RX_CLASS_IPV4_TCP_LBN,
1335 EFX_RX_CLASS_IPV4_UDP_LBN,
1336 EFX_RX_CLASS_IPV4_LBN,
1337 EFX_RX_CLASS_IPV6_TCP_LBN,
1338 EFX_RX_CLASS_IPV6_UDP_LBN,
1339 EFX_RX_CLASS_IPV6_LBN
1342 for (j = 0; j < RTE_DIM(class_tuple_lbn); ++j) {
1343 unsigned int tuple_mask = EFX_RX_CLASS_HASH_4TUPLE;
1346 tuple_mask <<= class_tuple_lbn[j];
1347 flag = hash_type & tuple_mask;
1349 if (flag == hash_type_flags_supported[i])
1350 hash_type_masked |= flag;
1354 return hash_type_masked;
1358 sfc_rx_hash_init(struct sfc_adapter *sa)
1360 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1361 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1362 uint32_t alg_mask = encp->enc_rx_scale_hash_alg_mask;
1363 efx_rx_hash_alg_t alg;
1364 unsigned int flags_supp[EFX_RX_HASH_NFLAGS];
1365 unsigned int nb_flags_supp;
1366 struct sfc_rss_hf_rte_to_efx *hf_map;
1367 struct sfc_rss_hf_rte_to_efx *entry;
1368 efx_rx_hash_type_t efx_hash_types;
1372 if (alg_mask & (1U << EFX_RX_HASHALG_TOEPLITZ))
1373 alg = EFX_RX_HASHALG_TOEPLITZ;
1374 else if (alg_mask & (1U << EFX_RX_HASHALG_PACKED_STREAM))
1375 alg = EFX_RX_HASHALG_PACKED_STREAM;
1379 rc = efx_rx_scale_hash_flags_get(sa->nic, alg, flags_supp,
1380 RTE_DIM(flags_supp), &nb_flags_supp);
1384 hf_map = rte_calloc_socket("sfc-rss-hf-map",
1385 RTE_DIM(sfc_rss_hf_map),
1386 sizeof(*hf_map), 0, sa->socket_id);
1392 for (i = 0; i < RTE_DIM(sfc_rss_hf_map); ++i) {
1393 efx_rx_hash_type_t ht;
1395 ht = sfc_rx_hash_types_mask_supp(sfc_rss_hf_map[i].efx,
1396 flags_supp, nb_flags_supp);
1398 entry->rte = sfc_rss_hf_map[i].rte;
1400 efx_hash_types |= ht;
1405 rss->hash_alg = alg;
1406 rss->hf_map_nb_entries = (unsigned int)(entry - hf_map);
1407 rss->hf_map = hf_map;
1408 rss->hash_types = efx_hash_types;
1414 sfc_rx_hash_fini(struct sfc_adapter *sa)
1416 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1418 rte_free(rss->hf_map);
1422 sfc_rx_hf_rte_to_efx(struct sfc_adapter *sa, uint64_t rte,
1423 efx_rx_hash_type_t *efx)
1425 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1426 efx_rx_hash_type_t hash_types = 0;
1429 for (i = 0; i < rss->hf_map_nb_entries; ++i) {
1430 uint64_t rte_mask = rss->hf_map[i].rte;
1432 if ((rte & rte_mask) != 0) {
1434 hash_types |= rss->hf_map[i].efx;
1439 sfc_err(sa, "unsupported hash functions requested");
1449 sfc_rx_hf_efx_to_rte(struct sfc_rss *rss, efx_rx_hash_type_t efx)
1454 for (i = 0; i < rss->hf_map_nb_entries; ++i) {
1455 efx_rx_hash_type_t hash_type = rss->hf_map[i].efx;
1457 if ((efx & hash_type) == hash_type)
1458 rte |= rss->hf_map[i].rte;
1465 sfc_rx_process_adv_conf_rss(struct sfc_adapter *sa,
1466 struct rte_eth_rss_conf *conf)
1468 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1469 efx_rx_hash_type_t efx_hash_types = rss->hash_types;
1470 uint64_t rss_hf = sfc_rx_hf_efx_to_rte(rss, efx_hash_types);
1473 if (rss->context_type != EFX_RX_SCALE_EXCLUSIVE) {
1474 if ((conf->rss_hf != 0 && conf->rss_hf != rss_hf) ||
1475 conf->rss_key != NULL)
1479 if (conf->rss_hf != 0) {
1480 rc = sfc_rx_hf_rte_to_efx(sa, conf->rss_hf, &efx_hash_types);
1485 if (conf->rss_key != NULL) {
1486 if (conf->rss_key_len != sizeof(rss->key)) {
1487 sfc_err(sa, "RSS key size is wrong (should be %zu)",
1491 rte_memcpy(rss->key, conf->rss_key, sizeof(rss->key));
1494 rss->hash_types = efx_hash_types;
1500 sfc_rx_rss_config(struct sfc_adapter *sa)
1502 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1505 if (rss->channels > 0) {
1506 rc = efx_rx_scale_mode_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1507 rss->hash_alg, rss->hash_types,
1512 rc = efx_rx_scale_key_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1513 rss->key, sizeof(rss->key));
1517 rc = efx_rx_scale_tbl_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1518 rss->tbl, RTE_DIM(rss->tbl));
1525 struct sfc_rxq_info *
1526 sfc_rxq_info_by_ethdev_qid(struct sfc_adapter_shared *sas,
1527 sfc_ethdev_qid_t ethdev_qid)
1529 sfc_sw_index_t sw_index;
1531 SFC_ASSERT((unsigned int)ethdev_qid < sas->ethdev_rxq_count);
1532 SFC_ASSERT(ethdev_qid != SFC_ETHDEV_QID_INVALID);
1534 sw_index = sfc_rxq_sw_index_by_ethdev_rx_qid(sas, ethdev_qid);
1535 return &sas->rxq_info[sw_index];
1539 sfc_rxq_ctrl_by_ethdev_qid(struct sfc_adapter *sa, sfc_ethdev_qid_t ethdev_qid)
1541 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
1542 sfc_sw_index_t sw_index;
1544 SFC_ASSERT((unsigned int)ethdev_qid < sas->ethdev_rxq_count);
1545 SFC_ASSERT(ethdev_qid != SFC_ETHDEV_QID_INVALID);
1547 sw_index = sfc_rxq_sw_index_by_ethdev_rx_qid(sas, ethdev_qid);
1548 return &sa->rxq_ctrl[sw_index];
1552 sfc_rx_start(struct sfc_adapter *sa)
1554 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1555 sfc_sw_index_t sw_index;
1558 sfc_log_init(sa, "rxq_count=%u (internal %u)", sas->ethdev_rxq_count,
1561 rc = efx_rx_init(sa->nic);
1565 rc = sfc_rx_rss_config(sa);
1567 goto fail_rss_config;
1569 for (sw_index = 0; sw_index < sas->rxq_count; ++sw_index) {
1570 if (sas->rxq_info[sw_index].state == SFC_RXQ_INITIALIZED &&
1571 (!sas->rxq_info[sw_index].deferred_start ||
1572 sas->rxq_info[sw_index].deferred_started)) {
1573 rc = sfc_rx_qstart(sa, sw_index);
1575 goto fail_rx_qstart;
1582 while (sw_index-- > 0)
1583 sfc_rx_qstop(sa, sw_index);
1586 efx_rx_fini(sa->nic);
1589 sfc_log_init(sa, "failed %d", rc);
1594 sfc_rx_stop(struct sfc_adapter *sa)
1596 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1597 sfc_sw_index_t sw_index;
1599 sfc_log_init(sa, "rxq_count=%u (internal %u)", sas->ethdev_rxq_count,
1602 sw_index = sas->rxq_count;
1603 while (sw_index-- > 0) {
1604 if (sas->rxq_info[sw_index].state & SFC_RXQ_STARTED)
1605 sfc_rx_qstop(sa, sw_index);
1608 efx_rx_fini(sa->nic);
1612 sfc_rx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
1613 unsigned int extra_efx_type_flags)
1615 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1616 struct sfc_rxq_info *rxq_info = &sas->rxq_info[sw_index];
1617 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1618 unsigned int max_entries;
1620 max_entries = encp->enc_rxq_max_ndescs;
1621 SFC_ASSERT(rte_is_power_of_2(max_entries));
1623 rxq_info->max_entries = max_entries;
1624 rxq_info->type_flags = extra_efx_type_flags;
1630 sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
1632 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1633 uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
1634 sfc_rx_get_queue_offload_caps(sa);
1635 struct sfc_rss *rss = &sas->rss;
1638 switch (rxmode->mq_mode) {
1639 case ETH_MQ_RX_NONE:
1640 /* No special checks are required */
1643 if (rss->context_type == EFX_RX_SCALE_UNAVAILABLE) {
1644 sfc_err(sa, "RSS is not available");
1649 sfc_err(sa, "Rx multi-queue mode %u not supported",
1655 * Requested offloads are validated against supported by ethdev,
1656 * so unsupported offloads cannot be added as the result of
1659 if ((rxmode->offloads & DEV_RX_OFFLOAD_CHECKSUM) !=
1660 (offloads_supported & DEV_RX_OFFLOAD_CHECKSUM)) {
1661 sfc_warn(sa, "Rx checksum offloads cannot be disabled - always on (IPv4/TCP/UDP)");
1662 rxmode->offloads |= DEV_RX_OFFLOAD_CHECKSUM;
1665 if ((offloads_supported & DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM) &&
1666 (~rxmode->offloads & DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM)) {
1667 sfc_warn(sa, "Rx outer IPv4 checksum offload cannot be disabled - always on");
1668 rxmode->offloads |= DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM;
1675 * Destroy excess queues that are no longer needed after reconfiguration
1676 * or complete close.
1679 sfc_rx_fini_queues(struct sfc_adapter *sa, unsigned int nb_rx_queues)
1681 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1682 sfc_sw_index_t sw_index;
1683 sfc_ethdev_qid_t ethdev_qid;
1685 SFC_ASSERT(nb_rx_queues <= sas->ethdev_rxq_count);
1688 * Finalize only ethdev queues since other ones are finalized only
1689 * on device close and they may require additional deinitializaton.
1691 ethdev_qid = sas->ethdev_rxq_count;
1692 while (--ethdev_qid >= (int)nb_rx_queues) {
1693 struct sfc_rxq_info *rxq_info;
1695 rxq_info = sfc_rxq_info_by_ethdev_qid(sas, ethdev_qid);
1696 if (rxq_info->state & SFC_RXQ_INITIALIZED) {
1697 sw_index = sfc_rxq_sw_index_by_ethdev_rx_qid(sas,
1699 sfc_rx_qfini(sa, sw_index);
1704 sas->ethdev_rxq_count = nb_rx_queues;
1708 * Initialize Rx subsystem.
1710 * Called at device (re)configuration stage when number of receive queues is
1711 * specified together with other device level receive configuration.
1713 * It should be used to allocate NUMA-unaware resources.
1716 sfc_rx_configure(struct sfc_adapter *sa)
1718 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1719 struct sfc_rss *rss = &sas->rss;
1720 struct rte_eth_conf *dev_conf = &sa->eth_dev->data->dev_conf;
1721 const unsigned int nb_rx_queues = sa->eth_dev->data->nb_rx_queues;
1722 const unsigned int nb_rsrv_rx_queues = sfc_nb_reserved_rxq(sas);
1723 const unsigned int nb_rxq_total = nb_rx_queues + nb_rsrv_rx_queues;
1727 sfc_log_init(sa, "nb_rx_queues=%u (old %u)",
1728 nb_rx_queues, sas->ethdev_rxq_count);
1730 rc = sfc_rx_check_mode(sa, &dev_conf->rxmode);
1732 goto fail_check_mode;
1734 if (nb_rxq_total == sas->rxq_count) {
1739 if (sas->rxq_info == NULL) {
1740 reconfigure = false;
1742 sas->rxq_info = rte_calloc_socket("sfc-rxqs", nb_rxq_total,
1743 sizeof(sas->rxq_info[0]), 0,
1745 if (sas->rxq_info == NULL)
1746 goto fail_rxqs_alloc;
1749 * Allocate primary process only RxQ control from heap
1750 * since it should not be shared.
1753 sa->rxq_ctrl = calloc(nb_rxq_total, sizeof(sa->rxq_ctrl[0]));
1754 if (sa->rxq_ctrl == NULL)
1755 goto fail_rxqs_ctrl_alloc;
1757 struct sfc_rxq_info *new_rxq_info;
1758 struct sfc_rxq *new_rxq_ctrl;
1762 /* Do not ununitialize reserved queues */
1763 if (nb_rx_queues < sas->ethdev_rxq_count)
1764 sfc_rx_fini_queues(sa, nb_rx_queues);
1768 rte_realloc(sas->rxq_info,
1769 nb_rxq_total * sizeof(sas->rxq_info[0]), 0);
1770 if (new_rxq_info == NULL && nb_rxq_total > 0)
1771 goto fail_rxqs_realloc;
1774 new_rxq_ctrl = realloc(sa->rxq_ctrl,
1775 nb_rxq_total * sizeof(sa->rxq_ctrl[0]));
1776 if (new_rxq_ctrl == NULL && nb_rxq_total > 0)
1777 goto fail_rxqs_ctrl_realloc;
1779 sas->rxq_info = new_rxq_info;
1780 sa->rxq_ctrl = new_rxq_ctrl;
1781 if (nb_rxq_total > sas->rxq_count) {
1782 unsigned int rxq_count = sas->rxq_count;
1784 memset(&sas->rxq_info[rxq_count], 0,
1785 (nb_rxq_total - rxq_count) *
1786 sizeof(sas->rxq_info[0]));
1787 memset(&sa->rxq_ctrl[rxq_count], 0,
1788 (nb_rxq_total - rxq_count) *
1789 sizeof(sa->rxq_ctrl[0]));
1793 while (sas->ethdev_rxq_count < nb_rx_queues) {
1794 sfc_sw_index_t sw_index;
1796 sw_index = sfc_rxq_sw_index_by_ethdev_rx_qid(sas,
1797 sas->ethdev_rxq_count);
1798 rc = sfc_rx_qinit_info(sa, sw_index, 0);
1800 goto fail_rx_qinit_info;
1802 sas->ethdev_rxq_count++;
1805 sas->rxq_count = sas->ethdev_rxq_count + nb_rsrv_rx_queues;
1808 rc = sfc_mae_counter_rxq_init(sa);
1810 goto fail_count_rxq_init;
1814 rss->channels = (dev_conf->rxmode.mq_mode == ETH_MQ_RX_RSS) ?
1815 MIN(sas->ethdev_rxq_count, EFX_MAXRSS) : 0;
1817 if (rss->channels > 0) {
1818 struct rte_eth_rss_conf *adv_conf_rss;
1819 sfc_sw_index_t sw_index;
1821 for (sw_index = 0; sw_index < EFX_RSS_TBL_SIZE; ++sw_index)
1822 rss->tbl[sw_index] = sw_index % rss->channels;
1824 adv_conf_rss = &dev_conf->rx_adv_conf.rss_conf;
1825 rc = sfc_rx_process_adv_conf_rss(sa, adv_conf_rss);
1827 goto fail_rx_process_adv_conf_rss;
1832 fail_rx_process_adv_conf_rss:
1834 sfc_mae_counter_rxq_fini(sa);
1836 fail_count_rxq_init:
1838 fail_rxqs_ctrl_realloc:
1840 fail_rxqs_ctrl_alloc:
1845 sfc_log_init(sa, "failed %d", rc);
1850 * Shutdown Rx subsystem.
1852 * Called at device close stage, for example, before device shutdown.
1855 sfc_rx_close(struct sfc_adapter *sa)
1857 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1859 sfc_rx_fini_queues(sa, 0);
1860 sfc_mae_counter_rxq_fini(sa);
1865 sa->rxq_ctrl = NULL;
1867 rte_free(sfc_sa2shared(sa)->rxq_info);
1868 sfc_sa2shared(sa)->rxq_info = NULL;