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"
16 #include "sfc_flow_tunnel.h"
20 #include "sfc_mae_counter.h"
21 #include "sfc_kvargs.h"
22 #include "sfc_tweak.h"
25 * Maximum number of Rx queue flush attempt in the case of failure or
28 #define SFC_RX_QFLUSH_ATTEMPTS (3)
31 * Time to wait between event queue polling attempts when waiting for Rx
32 * queue flush done or failed events.
34 #define SFC_RX_QFLUSH_POLL_WAIT_MS (1)
37 * Maximum number of event queue polling attempts when waiting for Rx queue
38 * flush done or failed events. It defines Rx queue flush attempt timeout
39 * together with SFC_RX_QFLUSH_POLL_WAIT_MS.
41 #define SFC_RX_QFLUSH_POLL_ATTEMPTS (2000)
44 sfc_rx_qflush_done(struct sfc_rxq_info *rxq_info)
46 rxq_info->state |= SFC_RXQ_FLUSHED;
47 rxq_info->state &= ~SFC_RXQ_FLUSHING;
51 sfc_rx_qflush_failed(struct sfc_rxq_info *rxq_info)
53 rxq_info->state |= SFC_RXQ_FLUSH_FAILED;
54 rxq_info->state &= ~SFC_RXQ_FLUSHING;
57 /* This returns the running counter, which is not bounded by ring size */
59 sfc_rx_get_pushed(struct sfc_adapter *sa, struct sfc_dp_rxq *dp_rxq)
61 SFC_ASSERT(sa->priv.dp_rx->get_pushed != NULL);
63 return sa->priv.dp_rx->get_pushed(dp_rxq);
67 sfc_efx_rx_qprime(struct sfc_efx_rxq *rxq)
71 if (rxq->evq->read_ptr_primed != rxq->evq->read_ptr) {
72 rc = efx_ev_qprime(rxq->evq->common, rxq->evq->read_ptr);
74 rxq->evq->read_ptr_primed = rxq->evq->read_ptr;
80 sfc_efx_rx_qrefill(struct sfc_efx_rxq *rxq)
82 unsigned int free_space;
84 void *objs[SFC_RX_REFILL_BULK];
85 efsys_dma_addr_t addr[RTE_DIM(objs)];
86 unsigned int added = rxq->added;
89 struct sfc_efx_rx_sw_desc *rxd;
91 uint16_t port_id = rxq->dp.dpq.port_id;
93 free_space = rxq->max_fill_level - (added - rxq->completed);
95 if (free_space < rxq->refill_threshold)
98 bulks = free_space / RTE_DIM(objs);
99 /* refill_threshold guarantees that bulks is positive */
100 SFC_ASSERT(bulks > 0);
102 id = added & rxq->ptr_mask;
104 if (unlikely(rte_mempool_get_bulk(rxq->refill_mb_pool, objs,
105 RTE_DIM(objs)) < 0)) {
107 * It is hardly a safe way to increment counter
108 * from different contexts, but all PMDs do it.
110 rxq->evq->sa->eth_dev->data->rx_mbuf_alloc_failed +=
112 /* Return if we have posted nothing yet */
113 if (added == rxq->added)
119 for (i = 0; i < RTE_DIM(objs);
120 ++i, id = (id + 1) & rxq->ptr_mask) {
123 __rte_mbuf_raw_sanity_check(m);
125 rxd = &rxq->sw_desc[id];
128 m->data_off = RTE_PKTMBUF_HEADROOM;
131 addr[i] = rte_pktmbuf_iova(m);
134 efx_rx_qpost(rxq->common, addr, rxq->buf_size,
135 RTE_DIM(objs), rxq->completed, added);
136 added += RTE_DIM(objs);
137 } while (--bulks > 0);
139 SFC_ASSERT(added != rxq->added);
141 efx_rx_qpush(rxq->common, added, &rxq->pushed);
142 rxq->dp.dpq.rx_dbells++;
146 sfc_efx_rx_desc_flags_to_offload_flags(const unsigned int desc_flags)
148 uint64_t mbuf_flags = 0;
150 switch (desc_flags & (EFX_PKT_IPV4 | EFX_CKSUM_IPV4)) {
151 case (EFX_PKT_IPV4 | EFX_CKSUM_IPV4):
152 mbuf_flags |= PKT_RX_IP_CKSUM_GOOD;
155 mbuf_flags |= PKT_RX_IP_CKSUM_BAD;
158 RTE_BUILD_BUG_ON(PKT_RX_IP_CKSUM_UNKNOWN != 0);
159 SFC_ASSERT((mbuf_flags & PKT_RX_IP_CKSUM_MASK) ==
160 PKT_RX_IP_CKSUM_UNKNOWN);
164 switch ((desc_flags &
165 (EFX_PKT_TCP | EFX_PKT_UDP | EFX_CKSUM_TCPUDP))) {
166 case (EFX_PKT_TCP | EFX_CKSUM_TCPUDP):
167 case (EFX_PKT_UDP | EFX_CKSUM_TCPUDP):
168 mbuf_flags |= PKT_RX_L4_CKSUM_GOOD;
172 mbuf_flags |= PKT_RX_L4_CKSUM_BAD;
175 RTE_BUILD_BUG_ON(PKT_RX_L4_CKSUM_UNKNOWN != 0);
176 SFC_ASSERT((mbuf_flags & PKT_RX_L4_CKSUM_MASK) ==
177 PKT_RX_L4_CKSUM_UNKNOWN);
185 sfc_efx_rx_desc_flags_to_packet_type(const unsigned int desc_flags)
187 return RTE_PTYPE_L2_ETHER |
188 ((desc_flags & EFX_PKT_IPV4) ?
189 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN : 0) |
190 ((desc_flags & EFX_PKT_IPV6) ?
191 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN : 0) |
192 ((desc_flags & EFX_PKT_TCP) ? RTE_PTYPE_L4_TCP : 0) |
193 ((desc_flags & EFX_PKT_UDP) ? RTE_PTYPE_L4_UDP : 0);
196 static const uint32_t *
197 sfc_efx_supported_ptypes_get(__rte_unused uint32_t tunnel_encaps)
199 static const uint32_t ptypes[] = {
201 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
202 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
212 sfc_efx_rx_set_rss_hash(struct sfc_efx_rxq *rxq, unsigned int flags,
218 if ((rxq->flags & SFC_EFX_RXQ_FLAG_RSS_HASH) == 0)
221 mbuf_data = rte_pktmbuf_mtod(m, uint8_t *);
223 if (flags & (EFX_PKT_IPV4 | EFX_PKT_IPV6)) {
224 m->hash.rss = efx_pseudo_hdr_hash_get(rxq->common,
225 EFX_RX_HASHALG_TOEPLITZ,
228 m->ol_flags |= PKT_RX_RSS_HASH;
233 sfc_efx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
235 struct sfc_dp_rxq *dp_rxq = rx_queue;
236 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
237 unsigned int completed;
238 unsigned int prefix_size = rxq->prefix_size;
239 unsigned int done_pkts = 0;
240 boolean_t discard_next = B_FALSE;
241 struct rte_mbuf *scatter_pkt = NULL;
243 if (unlikely((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) == 0))
246 sfc_ev_qpoll(rxq->evq);
248 completed = rxq->completed;
249 while (completed != rxq->pending && done_pkts < nb_pkts) {
251 struct sfc_efx_rx_sw_desc *rxd;
253 unsigned int seg_len;
254 unsigned int desc_flags;
256 id = completed++ & rxq->ptr_mask;
257 rxd = &rxq->sw_desc[id];
259 desc_flags = rxd->flags;
264 if (desc_flags & (EFX_ADDR_MISMATCH | EFX_DISCARD))
267 if (desc_flags & EFX_PKT_PREFIX_LEN) {
271 rc = efx_pseudo_hdr_pkt_length_get(rxq->common,
272 rte_pktmbuf_mtod(m, uint8_t *), &tmp_size);
276 seg_len = rxd->size - prefix_size;
279 rte_pktmbuf_data_len(m) = seg_len;
280 rte_pktmbuf_pkt_len(m) = seg_len;
282 if (scatter_pkt != NULL) {
283 if (rte_pktmbuf_chain(scatter_pkt, m) != 0) {
284 rte_pktmbuf_free(scatter_pkt);
287 /* The packet to deliver */
291 if (desc_flags & EFX_PKT_CONT) {
292 /* The packet is scattered, more fragments to come */
294 /* Further fragments have no prefix */
299 /* Scattered packet is done */
301 /* The first fragment of the packet has prefix */
302 prefix_size = rxq->prefix_size;
305 sfc_efx_rx_desc_flags_to_offload_flags(desc_flags);
307 sfc_efx_rx_desc_flags_to_packet_type(desc_flags);
310 * Extract RSS hash from the packet prefix and
311 * set the corresponding field (if needed and possible)
313 sfc_efx_rx_set_rss_hash(rxq, desc_flags, m);
315 m->data_off += prefix_size;
322 discard_next = ((desc_flags & EFX_PKT_CONT) != 0);
323 rte_mbuf_raw_free(m);
327 /* pending is only moved when entire packet is received */
328 SFC_ASSERT(scatter_pkt == NULL);
330 rxq->completed = completed;
332 sfc_efx_rx_qrefill(rxq);
334 if (rxq->flags & SFC_EFX_RXQ_FLAG_INTR_EN)
335 sfc_efx_rx_qprime(rxq);
340 static sfc_dp_rx_qdesc_npending_t sfc_efx_rx_qdesc_npending;
342 sfc_efx_rx_qdesc_npending(struct sfc_dp_rxq *dp_rxq)
344 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
346 if ((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) == 0)
349 sfc_ev_qpoll(rxq->evq);
351 return rxq->pending - rxq->completed;
354 static sfc_dp_rx_qdesc_status_t sfc_efx_rx_qdesc_status;
356 sfc_efx_rx_qdesc_status(struct sfc_dp_rxq *dp_rxq, uint16_t offset)
358 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
360 if (unlikely(offset > rxq->ptr_mask))
364 * Poll EvQ to derive up-to-date 'rxq->pending' figure;
365 * it is required for the queue to be running, but the
366 * check is omitted because API design assumes that it
367 * is the duty of the caller to satisfy all conditions
369 SFC_ASSERT((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) ==
370 SFC_EFX_RXQ_FLAG_RUNNING);
371 sfc_ev_qpoll(rxq->evq);
374 * There is a handful of reserved entries in the ring,
375 * but an explicit check whether the offset points to
376 * a reserved entry is neglected since the two checks
377 * below rely on the figures which take the HW limits
378 * into account and thus if an entry is reserved, the
379 * checks will fail and UNAVAIL code will be returned
382 if (offset < (rxq->pending - rxq->completed))
383 return RTE_ETH_RX_DESC_DONE;
385 if (offset < (rxq->added - rxq->completed))
386 return RTE_ETH_RX_DESC_AVAIL;
388 return RTE_ETH_RX_DESC_UNAVAIL;
392 sfc_rx_check_scatter(size_t pdu, size_t rx_buf_size, uint32_t rx_prefix_size,
393 boolean_t rx_scatter_enabled, uint32_t rx_scatter_max,
396 uint32_t effective_rx_scatter_max;
397 uint32_t rx_scatter_bufs;
399 effective_rx_scatter_max = rx_scatter_enabled ? rx_scatter_max : 1;
400 rx_scatter_bufs = EFX_DIV_ROUND_UP(pdu + rx_prefix_size, rx_buf_size);
402 if (rx_scatter_bufs > effective_rx_scatter_max) {
403 if (rx_scatter_enabled)
404 *error = "Possible number of Rx scatter buffers exceeds maximum number";
406 *error = "Rx scatter is disabled and RxQ mbuf pool object size is too small";
413 /** Get Rx datapath ops by the datapath RxQ handle */
414 const struct sfc_dp_rx *
415 sfc_dp_rx_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
417 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
418 struct rte_eth_dev *eth_dev;
419 struct sfc_adapter_priv *sap;
421 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
422 eth_dev = &rte_eth_devices[dpq->port_id];
424 sap = sfc_adapter_priv_by_eth_dev(eth_dev);
429 struct sfc_rxq_info *
430 sfc_rxq_info_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
432 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
433 struct rte_eth_dev *eth_dev;
434 struct sfc_adapter_shared *sas;
436 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
437 eth_dev = &rte_eth_devices[dpq->port_id];
439 sas = sfc_adapter_shared_by_eth_dev(eth_dev);
441 SFC_ASSERT(dpq->queue_id < sas->rxq_count);
442 return &sas->rxq_info[dpq->queue_id];
446 sfc_rxq_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
448 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
449 struct rte_eth_dev *eth_dev;
450 struct sfc_adapter *sa;
452 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
453 eth_dev = &rte_eth_devices[dpq->port_id];
455 sa = sfc_adapter_by_eth_dev(eth_dev);
457 SFC_ASSERT(dpq->queue_id < sfc_sa2shared(sa)->rxq_count);
458 return &sa->rxq_ctrl[dpq->queue_id];
461 static sfc_dp_rx_qsize_up_rings_t sfc_efx_rx_qsize_up_rings;
463 sfc_efx_rx_qsize_up_rings(uint16_t nb_rx_desc,
464 __rte_unused struct sfc_dp_rx_hw_limits *limits,
465 __rte_unused struct rte_mempool *mb_pool,
466 unsigned int *rxq_entries,
467 unsigned int *evq_entries,
468 unsigned int *rxq_max_fill_level)
470 *rxq_entries = nb_rx_desc;
471 *evq_entries = nb_rx_desc;
472 *rxq_max_fill_level = EFX_RXQ_LIMIT(*rxq_entries);
476 static sfc_dp_rx_qcreate_t sfc_efx_rx_qcreate;
478 sfc_efx_rx_qcreate(uint16_t port_id, uint16_t queue_id,
479 const struct rte_pci_addr *pci_addr, int socket_id,
480 const struct sfc_dp_rx_qcreate_info *info,
481 struct sfc_dp_rxq **dp_rxqp)
483 struct sfc_efx_rxq *rxq;
487 rxq = rte_zmalloc_socket("sfc-efx-rxq", sizeof(*rxq),
488 RTE_CACHE_LINE_SIZE, socket_id);
492 sfc_dp_queue_init(&rxq->dp.dpq, port_id, queue_id, pci_addr);
495 rxq->sw_desc = rte_calloc_socket("sfc-efx-rxq-sw_desc",
497 sizeof(*rxq->sw_desc),
498 RTE_CACHE_LINE_SIZE, socket_id);
499 if (rxq->sw_desc == NULL)
500 goto fail_desc_alloc;
502 /* efx datapath is bound to efx control path */
503 rxq->evq = sfc_rxq_by_dp_rxq(&rxq->dp)->evq;
504 if (info->flags & SFC_RXQ_FLAG_RSS_HASH)
505 rxq->flags |= SFC_EFX_RXQ_FLAG_RSS_HASH;
506 rxq->ptr_mask = info->rxq_entries - 1;
507 rxq->batch_max = info->batch_max;
508 rxq->prefix_size = info->prefix_size;
509 rxq->max_fill_level = info->max_fill_level;
510 rxq->refill_threshold = info->refill_threshold;
511 rxq->buf_size = info->buf_size;
512 rxq->refill_mb_pool = info->refill_mb_pool;
524 static sfc_dp_rx_qdestroy_t sfc_efx_rx_qdestroy;
526 sfc_efx_rx_qdestroy(struct sfc_dp_rxq *dp_rxq)
528 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
530 rte_free(rxq->sw_desc);
535 /* Use qstop and qstart functions in the case of qstart failure */
536 static sfc_dp_rx_qstop_t sfc_efx_rx_qstop;
537 static sfc_dp_rx_qpurge_t sfc_efx_rx_qpurge;
540 static sfc_dp_rx_qstart_t sfc_efx_rx_qstart;
542 sfc_efx_rx_qstart(struct sfc_dp_rxq *dp_rxq,
543 __rte_unused unsigned int evq_read_ptr,
544 const efx_rx_prefix_layout_t *pinfo)
546 /* libefx-based datapath is specific to libefx-based PMD */
547 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
548 struct sfc_rxq *crxq = sfc_rxq_by_dp_rxq(dp_rxq);
552 * libefx API is used to extract information from Rx prefix and
553 * it guarantees consistency. Just do length check to ensure
554 * that we reserved space in Rx buffers correctly.
556 if (rxq->prefix_size != pinfo->erpl_length)
559 rxq->common = crxq->common;
561 rxq->pending = rxq->completed = rxq->added = rxq->pushed = 0;
563 sfc_efx_rx_qrefill(rxq);
565 rxq->flags |= (SFC_EFX_RXQ_FLAG_STARTED | SFC_EFX_RXQ_FLAG_RUNNING);
567 if (rxq->flags & SFC_EFX_RXQ_FLAG_INTR_EN) {
568 rc = sfc_efx_rx_qprime(rxq);
576 sfc_efx_rx_qstop(dp_rxq, NULL);
577 sfc_efx_rx_qpurge(dp_rxq);
582 sfc_efx_rx_qstop(struct sfc_dp_rxq *dp_rxq,
583 __rte_unused unsigned int *evq_read_ptr)
585 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
587 rxq->flags &= ~SFC_EFX_RXQ_FLAG_RUNNING;
589 /* libefx-based datapath is bound to libefx-based PMD and uses
590 * event queue structure directly. So, there is no necessity to
591 * return EvQ read pointer.
596 sfc_efx_rx_qpurge(struct sfc_dp_rxq *dp_rxq)
598 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
600 struct sfc_efx_rx_sw_desc *rxd;
602 for (i = rxq->completed; i != rxq->added; ++i) {
603 rxd = &rxq->sw_desc[i & rxq->ptr_mask];
604 rte_mbuf_raw_free(rxd->mbuf);
606 /* Packed stream relies on 0 in inactive SW desc.
607 * Rx queue stop is not performance critical, so
608 * there is no harm to do it always.
614 rxq->flags &= ~SFC_EFX_RXQ_FLAG_STARTED;
617 static sfc_dp_rx_intr_enable_t sfc_efx_rx_intr_enable;
619 sfc_efx_rx_intr_enable(struct sfc_dp_rxq *dp_rxq)
621 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
624 rxq->flags |= SFC_EFX_RXQ_FLAG_INTR_EN;
625 if (rxq->flags & SFC_EFX_RXQ_FLAG_STARTED) {
626 rc = sfc_efx_rx_qprime(rxq);
628 rxq->flags &= ~SFC_EFX_RXQ_FLAG_INTR_EN;
633 static sfc_dp_rx_intr_disable_t sfc_efx_rx_intr_disable;
635 sfc_efx_rx_intr_disable(struct sfc_dp_rxq *dp_rxq)
637 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
639 /* Cannot disarm, just disable rearm */
640 rxq->flags &= ~SFC_EFX_RXQ_FLAG_INTR_EN;
644 struct sfc_dp_rx sfc_efx_rx = {
646 .name = SFC_KVARG_DATAPATH_EFX,
648 .hw_fw_caps = SFC_DP_HW_FW_CAP_RX_EFX,
650 .features = SFC_DP_RX_FEAT_INTR,
651 .dev_offload_capa = DEV_RX_OFFLOAD_CHECKSUM |
652 DEV_RX_OFFLOAD_RSS_HASH,
653 .queue_offload_capa = DEV_RX_OFFLOAD_SCATTER,
654 .qsize_up_rings = sfc_efx_rx_qsize_up_rings,
655 .qcreate = sfc_efx_rx_qcreate,
656 .qdestroy = sfc_efx_rx_qdestroy,
657 .qstart = sfc_efx_rx_qstart,
658 .qstop = sfc_efx_rx_qstop,
659 .qpurge = sfc_efx_rx_qpurge,
660 .supported_ptypes_get = sfc_efx_supported_ptypes_get,
661 .qdesc_npending = sfc_efx_rx_qdesc_npending,
662 .qdesc_status = sfc_efx_rx_qdesc_status,
663 .intr_enable = sfc_efx_rx_intr_enable,
664 .intr_disable = sfc_efx_rx_intr_disable,
665 .pkt_burst = sfc_efx_recv_pkts,
669 sfc_rx_qflush(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
671 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
672 sfc_ethdev_qid_t ethdev_qid;
673 struct sfc_rxq_info *rxq_info;
675 unsigned int retry_count;
676 unsigned int wait_count;
679 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
680 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
681 SFC_ASSERT(rxq_info->state & SFC_RXQ_STARTED);
683 rxq = &sa->rxq_ctrl[sw_index];
686 * Retry Rx queue flushing in the case of flush failed or
687 * timeout. In the worst case it can delay for 6 seconds.
689 for (retry_count = 0;
690 ((rxq_info->state & SFC_RXQ_FLUSHED) == 0) &&
691 (retry_count < SFC_RX_QFLUSH_ATTEMPTS);
693 rc = efx_rx_qflush(rxq->common);
695 rxq_info->state |= (rc == EALREADY) ?
696 SFC_RXQ_FLUSHED : SFC_RXQ_FLUSH_FAILED;
699 rxq_info->state &= ~SFC_RXQ_FLUSH_FAILED;
700 rxq_info->state |= SFC_RXQ_FLUSHING;
703 * Wait for Rx queue flush done or failed event at least
704 * SFC_RX_QFLUSH_POLL_WAIT_MS milliseconds and not more
705 * than 2 seconds (SFC_RX_QFLUSH_POLL_WAIT_MS multiplied
706 * by SFC_RX_QFLUSH_POLL_ATTEMPTS).
710 rte_delay_ms(SFC_RX_QFLUSH_POLL_WAIT_MS);
711 sfc_ev_qpoll(rxq->evq);
712 } while ((rxq_info->state & SFC_RXQ_FLUSHING) &&
713 (wait_count++ < SFC_RX_QFLUSH_POLL_ATTEMPTS));
715 if (rxq_info->state & SFC_RXQ_FLUSHING)
716 sfc_err(sa, "RxQ %d (internal %u) flush timed out",
717 ethdev_qid, sw_index);
719 if (rxq_info->state & SFC_RXQ_FLUSH_FAILED)
720 sfc_err(sa, "RxQ %d (internal %u) flush failed",
721 ethdev_qid, sw_index);
723 if (rxq_info->state & SFC_RXQ_FLUSHED)
724 sfc_notice(sa, "RxQ %d (internal %u) flushed",
725 ethdev_qid, sw_index);
728 sa->priv.dp_rx->qpurge(rxq_info->dp);
732 sfc_rx_default_rxq_set_filter(struct sfc_adapter *sa, struct sfc_rxq *rxq)
734 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
735 boolean_t need_rss = (rss->channels > 0) ? B_TRUE : B_FALSE;
736 struct sfc_port *port = &sa->port;
740 * If promiscuous or all-multicast mode has been requested, setting
741 * filter for the default Rx queue might fail, in particular, while
742 * running over PCI function which is not a member of corresponding
743 * privilege groups; if this occurs, few iterations will be made to
744 * repeat this step without promiscuous and all-multicast flags set
747 rc = efx_mac_filter_default_rxq_set(sa->nic, rxq->common, need_rss);
750 else if (rc != EOPNOTSUPP)
754 sfc_warn(sa, "promiscuous mode has been requested, "
755 "but the HW rejects it");
756 sfc_warn(sa, "promiscuous mode will be disabled");
758 port->promisc = B_FALSE;
759 sa->eth_dev->data->promiscuous = 0;
760 rc = sfc_set_rx_mode_unchecked(sa);
767 if (port->allmulti) {
768 sfc_warn(sa, "all-multicast mode has been requested, "
769 "but the HW rejects it");
770 sfc_warn(sa, "all-multicast mode will be disabled");
772 port->allmulti = B_FALSE;
773 sa->eth_dev->data->all_multicast = 0;
774 rc = sfc_set_rx_mode_unchecked(sa);
785 sfc_rx_qstart(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
787 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
788 sfc_ethdev_qid_t ethdev_qid;
789 struct sfc_rxq_info *rxq_info;
792 efx_rx_prefix_layout_t pinfo;
795 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
796 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
798 sfc_log_init(sa, "RxQ %d (internal %u)", ethdev_qid, sw_index);
800 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
801 SFC_ASSERT(rxq_info->state == SFC_RXQ_INITIALIZED);
803 rxq = &sa->rxq_ctrl[sw_index];
806 rc = sfc_ev_qstart(evq, sfc_evq_sw_index_by_rxq_sw_index(sa, sw_index));
810 switch (rxq_info->type) {
811 case EFX_RXQ_TYPE_DEFAULT:
812 rc = efx_rx_qcreate(sa->nic, rxq->hw_index, 0, rxq_info->type,
814 &rxq->mem, rxq_info->entries, 0 /* not used on EF10 */,
815 rxq_info->type_flags, evq->common, &rxq->common);
817 case EFX_RXQ_TYPE_ES_SUPER_BUFFER: {
818 struct rte_mempool *mp = rxq_info->refill_mb_pool;
819 struct rte_mempool_info mp_info;
821 rc = rte_mempool_ops_get_info(mp, &mp_info);
823 /* Positive errno is used in the driver */
825 goto fail_mp_get_info;
827 if (mp_info.contig_block_size <= 0) {
829 goto fail_bad_contig_block_size;
831 rc = efx_rx_qcreate_es_super_buffer(sa->nic, rxq->hw_index, 0,
832 mp_info.contig_block_size, rxq->buf_size,
833 mp->header_size + mp->elt_size + mp->trailer_size,
834 sa->rxd_wait_timeout_ns,
835 &rxq->mem, rxq_info->entries, rxq_info->type_flags,
836 evq->common, &rxq->common);
843 goto fail_rx_qcreate;
845 rc = efx_rx_prefix_get_layout(rxq->common, &pinfo);
847 goto fail_prefix_get_layout;
849 efx_rx_qenable(rxq->common);
851 rc = sa->priv.dp_rx->qstart(rxq_info->dp, evq->read_ptr, &pinfo);
855 rxq_info->state |= SFC_RXQ_STARTED;
857 if (ethdev_qid == 0 && !sfc_sa2shared(sa)->isolated) {
858 rc = sfc_rx_default_rxq_set_filter(sa, rxq);
860 goto fail_mac_filter_default_rxq_set;
863 /* It seems to be used by DPDK for debug purposes only ('rte_ether') */
864 if (ethdev_qid != SFC_ETHDEV_QID_INVALID)
865 sa->eth_dev->data->rx_queue_state[ethdev_qid] =
866 RTE_ETH_QUEUE_STATE_STARTED;
870 fail_mac_filter_default_rxq_set:
871 sfc_rx_qflush(sa, sw_index);
872 sa->priv.dp_rx->qstop(rxq_info->dp, &rxq->evq->read_ptr);
873 rxq_info->state = SFC_RXQ_INITIALIZED;
876 efx_rx_qdestroy(rxq->common);
878 fail_prefix_get_layout:
880 fail_bad_contig_block_size:
889 sfc_rx_qstop(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
891 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
892 sfc_ethdev_qid_t ethdev_qid;
893 struct sfc_rxq_info *rxq_info;
896 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
897 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
899 sfc_log_init(sa, "RxQ %d (internal %u)", ethdev_qid, sw_index);
901 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
903 if (rxq_info->state == SFC_RXQ_INITIALIZED)
905 SFC_ASSERT(rxq_info->state & SFC_RXQ_STARTED);
907 /* It seems to be used by DPDK for debug purposes only ('rte_ether') */
908 if (ethdev_qid != SFC_ETHDEV_QID_INVALID)
909 sa->eth_dev->data->rx_queue_state[ethdev_qid] =
910 RTE_ETH_QUEUE_STATE_STOPPED;
912 rxq = &sa->rxq_ctrl[sw_index];
913 sa->priv.dp_rx->qstop(rxq_info->dp, &rxq->evq->read_ptr);
916 efx_mac_filter_default_rxq_clear(sa->nic);
918 sfc_rx_qflush(sa, sw_index);
920 rxq_info->state = SFC_RXQ_INITIALIZED;
922 efx_rx_qdestroy(rxq->common);
924 sfc_ev_qstop(rxq->evq);
928 sfc_rx_get_offload_mask(struct sfc_adapter *sa)
930 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
931 uint64_t no_caps = 0;
933 if (encp->enc_tunnel_encapsulations_supported == 0)
934 no_caps |= DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM;
940 sfc_rx_get_dev_offload_caps(struct sfc_adapter *sa)
942 uint64_t caps = sa->priv.dp_rx->dev_offload_capa;
944 return caps & sfc_rx_get_offload_mask(sa);
948 sfc_rx_get_queue_offload_caps(struct sfc_adapter *sa)
950 return sa->priv.dp_rx->queue_offload_capa & sfc_rx_get_offload_mask(sa);
954 sfc_rx_qcheck_conf(struct sfc_adapter *sa, unsigned int rxq_max_fill_level,
955 const struct rte_eth_rxconf *rx_conf,
956 __rte_unused uint64_t offloads)
960 if (rx_conf->rx_thresh.pthresh != 0 ||
961 rx_conf->rx_thresh.hthresh != 0 ||
962 rx_conf->rx_thresh.wthresh != 0) {
964 "RxQ prefetch/host/writeback thresholds are not supported");
967 if (rx_conf->rx_free_thresh > rxq_max_fill_level) {
969 "RxQ free threshold too large: %u vs maximum %u",
970 rx_conf->rx_free_thresh, rxq_max_fill_level);
974 if (rx_conf->rx_drop_en == 0) {
975 sfc_err(sa, "RxQ drop disable is not supported");
983 sfc_rx_mbuf_data_alignment(struct rte_mempool *mb_pool)
988 /* The mbuf object itself is always cache line aligned */
989 order = rte_bsf32(RTE_CACHE_LINE_SIZE);
991 /* Data offset from mbuf object start */
992 data_off = sizeof(struct rte_mbuf) + rte_pktmbuf_priv_size(mb_pool) +
993 RTE_PKTMBUF_HEADROOM;
995 order = MIN(order, rte_bsf32(data_off));
1001 sfc_rx_mb_pool_buf_size(struct sfc_adapter *sa, struct rte_mempool *mb_pool)
1003 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1004 const uint32_t nic_align_start = MAX(1, encp->enc_rx_buf_align_start);
1005 const uint32_t nic_align_end = MAX(1, encp->enc_rx_buf_align_end);
1007 unsigned int buf_aligned;
1008 unsigned int start_alignment;
1009 unsigned int end_padding_alignment;
1011 /* Below it is assumed that both alignments are power of 2 */
1012 SFC_ASSERT(rte_is_power_of_2(nic_align_start));
1013 SFC_ASSERT(rte_is_power_of_2(nic_align_end));
1016 * mbuf is always cache line aligned, double-check
1017 * that it meets rx buffer start alignment requirements.
1020 /* Start from mbuf pool data room size */
1021 buf_size = rte_pktmbuf_data_room_size(mb_pool);
1023 /* Remove headroom */
1024 if (buf_size <= RTE_PKTMBUF_HEADROOM) {
1026 "RxQ mbuf pool %s object data room size %u is smaller than headroom %u",
1027 mb_pool->name, buf_size, RTE_PKTMBUF_HEADROOM);
1030 buf_size -= RTE_PKTMBUF_HEADROOM;
1032 /* Calculate guaranteed data start alignment */
1033 buf_aligned = sfc_rx_mbuf_data_alignment(mb_pool);
1035 /* Reserve space for start alignment */
1036 if (buf_aligned < nic_align_start) {
1037 start_alignment = nic_align_start - buf_aligned;
1038 if (buf_size <= start_alignment) {
1040 "RxQ mbuf pool %s object data room size %u is insufficient for headroom %u and buffer start alignment %u required by NIC",
1042 rte_pktmbuf_data_room_size(mb_pool),
1043 RTE_PKTMBUF_HEADROOM, start_alignment);
1046 buf_aligned = nic_align_start;
1047 buf_size -= start_alignment;
1049 start_alignment = 0;
1052 /* Make sure that end padding does not write beyond the buffer */
1053 if (buf_aligned < nic_align_end) {
1055 * Estimate space which can be lost. If guarnteed buffer
1056 * size is odd, lost space is (nic_align_end - 1). More
1057 * accurate formula is below.
1059 end_padding_alignment = nic_align_end -
1060 MIN(buf_aligned, 1u << (rte_bsf32(buf_size) - 1));
1061 if (buf_size <= end_padding_alignment) {
1063 "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",
1065 rte_pktmbuf_data_room_size(mb_pool),
1066 RTE_PKTMBUF_HEADROOM, start_alignment,
1067 end_padding_alignment);
1070 buf_size -= end_padding_alignment;
1073 * Start is aligned the same or better than end,
1074 * just align length.
1076 buf_size = EFX_P2ALIGN(uint32_t, buf_size, nic_align_end);
1083 sfc_rx_qinit(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
1084 uint16_t nb_rx_desc, unsigned int socket_id,
1085 const struct rte_eth_rxconf *rx_conf,
1086 struct rte_mempool *mb_pool)
1088 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
1089 sfc_ethdev_qid_t ethdev_qid;
1090 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1091 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1093 unsigned int rxq_entries;
1094 unsigned int evq_entries;
1095 unsigned int rxq_max_fill_level;
1098 struct sfc_rxq_info *rxq_info;
1099 struct sfc_evq *evq;
1100 struct sfc_rxq *rxq;
1101 struct sfc_dp_rx_qcreate_info info;
1102 struct sfc_dp_rx_hw_limits hw_limits;
1103 uint16_t rx_free_thresh;
1106 memset(&hw_limits, 0, sizeof(hw_limits));
1107 hw_limits.rxq_max_entries = sa->rxq_max_entries;
1108 hw_limits.rxq_min_entries = sa->rxq_min_entries;
1109 hw_limits.evq_max_entries = sa->evq_max_entries;
1110 hw_limits.evq_min_entries = sa->evq_min_entries;
1112 rc = sa->priv.dp_rx->qsize_up_rings(nb_rx_desc, &hw_limits, mb_pool,
1113 &rxq_entries, &evq_entries,
1114 &rxq_max_fill_level);
1116 goto fail_size_up_rings;
1117 SFC_ASSERT(rxq_entries >= sa->rxq_min_entries);
1118 SFC_ASSERT(rxq_entries <= sa->rxq_max_entries);
1119 SFC_ASSERT(rxq_max_fill_level <= nb_rx_desc);
1121 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
1123 offloads = rx_conf->offloads;
1124 /* Add device level Rx offloads if the queue is an ethdev Rx queue */
1125 if (ethdev_qid != SFC_ETHDEV_QID_INVALID)
1126 offloads |= sa->eth_dev->data->dev_conf.rxmode.offloads;
1128 rc = sfc_rx_qcheck_conf(sa, rxq_max_fill_level, rx_conf, offloads);
1132 buf_size = sfc_rx_mb_pool_buf_size(sa, mb_pool);
1133 if (buf_size == 0) {
1135 "RxQ %d (internal %u) mbuf pool object size is too small",
1136 ethdev_qid, sw_index);
1141 if (!sfc_rx_check_scatter(sa->port.pdu, buf_size,
1142 encp->enc_rx_prefix_size,
1143 (offloads & DEV_RX_OFFLOAD_SCATTER),
1144 encp->enc_rx_scatter_max,
1146 sfc_err(sa, "RxQ %d (internal %u) MTU check failed: %s",
1147 ethdev_qid, sw_index, error);
1149 "RxQ %d (internal %u) calculated Rx buffer size is %u vs "
1150 "PDU size %u plus Rx prefix %u bytes",
1151 ethdev_qid, sw_index, buf_size,
1152 (unsigned int)sa->port.pdu, encp->enc_rx_prefix_size);
1157 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
1158 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
1160 SFC_ASSERT(rxq_entries <= rxq_info->max_entries);
1161 rxq_info->entries = rxq_entries;
1163 if (sa->priv.dp_rx->dp.hw_fw_caps & SFC_DP_HW_FW_CAP_RX_ES_SUPER_BUFFER)
1164 rxq_info->type = EFX_RXQ_TYPE_ES_SUPER_BUFFER;
1166 rxq_info->type = EFX_RXQ_TYPE_DEFAULT;
1168 rxq_info->type_flags |=
1169 (offloads & DEV_RX_OFFLOAD_SCATTER) ?
1170 EFX_RXQ_FLAG_SCATTER : EFX_RXQ_FLAG_NONE;
1172 if ((encp->enc_tunnel_encapsulations_supported != 0) &&
1173 (sfc_dp_rx_offload_capa(sa->priv.dp_rx) &
1174 DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM) != 0)
1175 rxq_info->type_flags |= EFX_RXQ_FLAG_INNER_CLASSES;
1177 if (offloads & DEV_RX_OFFLOAD_RSS_HASH)
1178 rxq_info->type_flags |= EFX_RXQ_FLAG_RSS_HASH;
1180 if ((sa->negotiated_rx_metadata & RTE_ETH_RX_METADATA_USER_FLAG) != 0)
1181 rxq_info->type_flags |= EFX_RXQ_FLAG_USER_FLAG;
1183 if ((sa->negotiated_rx_metadata & RTE_ETH_RX_METADATA_USER_MARK) != 0 ||
1184 sfc_flow_tunnel_is_active(sa))
1185 rxq_info->type_flags |= EFX_RXQ_FLAG_USER_MARK;
1187 rc = sfc_ev_qinit(sa, SFC_EVQ_TYPE_RX, sw_index,
1188 evq_entries, socket_id, &evq);
1192 rxq = &sa->rxq_ctrl[sw_index];
1194 rxq->hw_index = sw_index;
1196 * If Rx refill threshold is specified (its value is non zero) in
1197 * Rx configuration, use specified value. Otherwise use 1/8 of
1198 * the Rx descriptors number as the default. It allows to keep
1199 * Rx ring full-enough and does not refill too aggressive if
1200 * packet rate is high.
1202 * Since PMD refills in bulks waiting for full bulk may be
1203 * refilled (basically round down), it is better to round up
1204 * here to mitigate it a bit.
1206 rx_free_thresh = (rx_conf->rx_free_thresh != 0) ?
1207 rx_conf->rx_free_thresh : EFX_DIV_ROUND_UP(nb_rx_desc, 8);
1208 /* Rx refill threshold cannot be smaller than refill bulk */
1209 rxq_info->refill_threshold =
1210 RTE_MAX(rx_free_thresh, SFC_RX_REFILL_BULK);
1211 rxq_info->refill_mb_pool = mb_pool;
1213 if (rss->hash_support == EFX_RX_HASH_AVAILABLE && rss->channels > 0 &&
1214 (offloads & DEV_RX_OFFLOAD_RSS_HASH))
1215 rxq_info->rxq_flags = SFC_RXQ_FLAG_RSS_HASH;
1217 rxq_info->rxq_flags = 0;
1219 rxq->buf_size = buf_size;
1221 rc = sfc_dma_alloc(sa, "rxq", sw_index,
1222 efx_rxq_size(sa->nic, rxq_info->entries),
1223 socket_id, &rxq->mem);
1225 goto fail_dma_alloc;
1227 memset(&info, 0, sizeof(info));
1228 info.refill_mb_pool = rxq_info->refill_mb_pool;
1229 info.max_fill_level = rxq_max_fill_level;
1230 info.refill_threshold = rxq_info->refill_threshold;
1231 info.buf_size = buf_size;
1232 info.batch_max = encp->enc_rx_batch_max;
1233 info.prefix_size = encp->enc_rx_prefix_size;
1235 if (sfc_flow_tunnel_is_active(sa))
1236 info.user_mark_mask = SFC_FT_USER_MARK_MASK;
1238 info.user_mark_mask = UINT32_MAX;
1240 info.flags = rxq_info->rxq_flags;
1241 info.rxq_entries = rxq_info->entries;
1242 info.rxq_hw_ring = rxq->mem.esm_base;
1243 info.evq_hw_index = sfc_evq_sw_index_by_rxq_sw_index(sa, sw_index);
1244 info.evq_entries = evq_entries;
1245 info.evq_hw_ring = evq->mem.esm_base;
1246 info.hw_index = rxq->hw_index;
1247 info.mem_bar = sa->mem_bar.esb_base;
1248 info.vi_window_shift = encp->enc_vi_window_shift;
1249 info.fcw_offset = sa->fcw_offset;
1251 rc = sa->priv.dp_rx->qcreate(sa->eth_dev->data->port_id, sw_index,
1252 &RTE_ETH_DEV_TO_PCI(sa->eth_dev)->addr,
1253 socket_id, &info, &rxq_info->dp);
1255 goto fail_dp_rx_qcreate;
1257 evq->dp_rxq = rxq_info->dp;
1259 rxq_info->state = SFC_RXQ_INITIALIZED;
1261 rxq_info->deferred_start = (rx_conf->rx_deferred_start != 0);
1266 sfc_dma_free(sa, &rxq->mem);
1272 rxq_info->entries = 0;
1276 sfc_log_init(sa, "failed %d", rc);
1281 sfc_rx_qfini(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
1283 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
1284 sfc_ethdev_qid_t ethdev_qid;
1285 struct sfc_rxq_info *rxq_info;
1286 struct sfc_rxq *rxq;
1288 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
1289 ethdev_qid = sfc_ethdev_rx_qid_by_rxq_sw_index(sas, sw_index);
1291 if (ethdev_qid != SFC_ETHDEV_QID_INVALID)
1292 sa->eth_dev->data->rx_queues[ethdev_qid] = NULL;
1294 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
1296 SFC_ASSERT(rxq_info->state == SFC_RXQ_INITIALIZED);
1298 sa->priv.dp_rx->qdestroy(rxq_info->dp);
1299 rxq_info->dp = NULL;
1301 rxq_info->state &= ~SFC_RXQ_INITIALIZED;
1302 rxq_info->entries = 0;
1304 rxq = &sa->rxq_ctrl[sw_index];
1306 sfc_dma_free(sa, &rxq->mem);
1308 sfc_ev_qfini(rxq->evq);
1313 * Mapping between RTE RSS hash functions and their EFX counterparts.
1315 static const struct sfc_rss_hf_rte_to_efx sfc_rss_hf_map[] = {
1316 { ETH_RSS_NONFRAG_IPV4_TCP,
1317 EFX_RX_HASH(IPV4_TCP, 4TUPLE) },
1318 { ETH_RSS_NONFRAG_IPV4_UDP,
1319 EFX_RX_HASH(IPV4_UDP, 4TUPLE) },
1320 { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_IPV6_TCP_EX,
1321 EFX_RX_HASH(IPV6_TCP, 4TUPLE) },
1322 { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_IPV6_UDP_EX,
1323 EFX_RX_HASH(IPV6_UDP, 4TUPLE) },
1324 { ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | ETH_RSS_NONFRAG_IPV4_OTHER,
1325 EFX_RX_HASH(IPV4_TCP, 2TUPLE) | EFX_RX_HASH(IPV4_UDP, 2TUPLE) |
1326 EFX_RX_HASH(IPV4, 2TUPLE) },
1327 { ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | ETH_RSS_NONFRAG_IPV6_OTHER |
1329 EFX_RX_HASH(IPV6_TCP, 2TUPLE) | EFX_RX_HASH(IPV6_UDP, 2TUPLE) |
1330 EFX_RX_HASH(IPV6, 2TUPLE) }
1333 static efx_rx_hash_type_t
1334 sfc_rx_hash_types_mask_supp(efx_rx_hash_type_t hash_type,
1335 unsigned int *hash_type_flags_supported,
1336 unsigned int nb_hash_type_flags_supported)
1338 efx_rx_hash_type_t hash_type_masked = 0;
1341 for (i = 0; i < nb_hash_type_flags_supported; ++i) {
1342 unsigned int class_tuple_lbn[] = {
1343 EFX_RX_CLASS_IPV4_TCP_LBN,
1344 EFX_RX_CLASS_IPV4_UDP_LBN,
1345 EFX_RX_CLASS_IPV4_LBN,
1346 EFX_RX_CLASS_IPV6_TCP_LBN,
1347 EFX_RX_CLASS_IPV6_UDP_LBN,
1348 EFX_RX_CLASS_IPV6_LBN
1351 for (j = 0; j < RTE_DIM(class_tuple_lbn); ++j) {
1352 unsigned int tuple_mask = EFX_RX_CLASS_HASH_4TUPLE;
1355 tuple_mask <<= class_tuple_lbn[j];
1356 flag = hash_type & tuple_mask;
1358 if (flag == hash_type_flags_supported[i])
1359 hash_type_masked |= flag;
1363 return hash_type_masked;
1367 sfc_rx_hash_init(struct sfc_adapter *sa)
1369 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1370 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1371 uint32_t alg_mask = encp->enc_rx_scale_hash_alg_mask;
1372 efx_rx_hash_alg_t alg;
1373 unsigned int flags_supp[EFX_RX_HASH_NFLAGS];
1374 unsigned int nb_flags_supp;
1375 struct sfc_rss_hf_rte_to_efx *hf_map;
1376 struct sfc_rss_hf_rte_to_efx *entry;
1377 efx_rx_hash_type_t efx_hash_types;
1381 if (alg_mask & (1U << EFX_RX_HASHALG_TOEPLITZ))
1382 alg = EFX_RX_HASHALG_TOEPLITZ;
1383 else if (alg_mask & (1U << EFX_RX_HASHALG_PACKED_STREAM))
1384 alg = EFX_RX_HASHALG_PACKED_STREAM;
1388 rc = efx_rx_scale_hash_flags_get(sa->nic, alg, flags_supp,
1389 RTE_DIM(flags_supp), &nb_flags_supp);
1393 hf_map = rte_calloc_socket("sfc-rss-hf-map",
1394 RTE_DIM(sfc_rss_hf_map),
1395 sizeof(*hf_map), 0, sa->socket_id);
1401 for (i = 0; i < RTE_DIM(sfc_rss_hf_map); ++i) {
1402 efx_rx_hash_type_t ht;
1404 ht = sfc_rx_hash_types_mask_supp(sfc_rss_hf_map[i].efx,
1405 flags_supp, nb_flags_supp);
1407 entry->rte = sfc_rss_hf_map[i].rte;
1409 efx_hash_types |= ht;
1414 rss->hash_alg = alg;
1415 rss->hf_map_nb_entries = (unsigned int)(entry - hf_map);
1416 rss->hf_map = hf_map;
1417 rss->hash_types = efx_hash_types;
1423 sfc_rx_hash_fini(struct sfc_adapter *sa)
1425 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1427 rte_free(rss->hf_map);
1431 sfc_rx_hf_rte_to_efx(struct sfc_adapter *sa, uint64_t rte,
1432 efx_rx_hash_type_t *efx)
1434 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1435 efx_rx_hash_type_t hash_types = 0;
1438 for (i = 0; i < rss->hf_map_nb_entries; ++i) {
1439 uint64_t rte_mask = rss->hf_map[i].rte;
1441 if ((rte & rte_mask) != 0) {
1443 hash_types |= rss->hf_map[i].efx;
1448 sfc_err(sa, "unsupported hash functions requested");
1458 sfc_rx_hf_efx_to_rte(struct sfc_rss *rss, efx_rx_hash_type_t efx)
1463 for (i = 0; i < rss->hf_map_nb_entries; ++i) {
1464 efx_rx_hash_type_t hash_type = rss->hf_map[i].efx;
1466 if ((efx & hash_type) == hash_type)
1467 rte |= rss->hf_map[i].rte;
1474 sfc_rx_process_adv_conf_rss(struct sfc_adapter *sa,
1475 struct rte_eth_rss_conf *conf)
1477 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1478 efx_rx_hash_type_t efx_hash_types = rss->hash_types;
1479 uint64_t rss_hf = sfc_rx_hf_efx_to_rte(rss, efx_hash_types);
1482 if (rss->context_type != EFX_RX_SCALE_EXCLUSIVE) {
1483 if ((conf->rss_hf != 0 && conf->rss_hf != rss_hf) ||
1484 conf->rss_key != NULL)
1488 if (conf->rss_hf != 0) {
1489 rc = sfc_rx_hf_rte_to_efx(sa, conf->rss_hf, &efx_hash_types);
1494 if (conf->rss_key != NULL) {
1495 if (conf->rss_key_len != sizeof(rss->key)) {
1496 sfc_err(sa, "RSS key size is wrong (should be %zu)",
1500 rte_memcpy(rss->key, conf->rss_key, sizeof(rss->key));
1503 rss->hash_types = efx_hash_types;
1509 sfc_rx_rss_config(struct sfc_adapter *sa)
1511 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1514 if (rss->channels > 0) {
1515 rc = efx_rx_scale_mode_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1516 rss->hash_alg, rss->hash_types,
1521 rc = efx_rx_scale_key_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1522 rss->key, sizeof(rss->key));
1526 rc = efx_rx_scale_tbl_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1527 rss->tbl, RTE_DIM(rss->tbl));
1534 struct sfc_rxq_info *
1535 sfc_rxq_info_by_ethdev_qid(struct sfc_adapter_shared *sas,
1536 sfc_ethdev_qid_t ethdev_qid)
1538 sfc_sw_index_t sw_index;
1540 SFC_ASSERT((unsigned int)ethdev_qid < sas->ethdev_rxq_count);
1541 SFC_ASSERT(ethdev_qid != SFC_ETHDEV_QID_INVALID);
1543 sw_index = sfc_rxq_sw_index_by_ethdev_rx_qid(sas, ethdev_qid);
1544 return &sas->rxq_info[sw_index];
1548 sfc_rxq_ctrl_by_ethdev_qid(struct sfc_adapter *sa, sfc_ethdev_qid_t ethdev_qid)
1550 struct sfc_adapter_shared *sas = sfc_sa2shared(sa);
1551 sfc_sw_index_t sw_index;
1553 SFC_ASSERT((unsigned int)ethdev_qid < sas->ethdev_rxq_count);
1554 SFC_ASSERT(ethdev_qid != SFC_ETHDEV_QID_INVALID);
1556 sw_index = sfc_rxq_sw_index_by_ethdev_rx_qid(sas, ethdev_qid);
1557 return &sa->rxq_ctrl[sw_index];
1561 sfc_rx_start(struct sfc_adapter *sa)
1563 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1564 sfc_sw_index_t sw_index;
1567 sfc_log_init(sa, "rxq_count=%u (internal %u)", sas->ethdev_rxq_count,
1570 rc = efx_rx_init(sa->nic);
1574 rc = sfc_rx_rss_config(sa);
1576 goto fail_rss_config;
1578 for (sw_index = 0; sw_index < sas->rxq_count; ++sw_index) {
1579 if (sas->rxq_info[sw_index].state == SFC_RXQ_INITIALIZED &&
1580 (!sas->rxq_info[sw_index].deferred_start ||
1581 sas->rxq_info[sw_index].deferred_started)) {
1582 rc = sfc_rx_qstart(sa, sw_index);
1584 goto fail_rx_qstart;
1591 while (sw_index-- > 0)
1592 sfc_rx_qstop(sa, sw_index);
1595 efx_rx_fini(sa->nic);
1598 sfc_log_init(sa, "failed %d", rc);
1603 sfc_rx_stop(struct sfc_adapter *sa)
1605 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1606 sfc_sw_index_t sw_index;
1608 sfc_log_init(sa, "rxq_count=%u (internal %u)", sas->ethdev_rxq_count,
1611 sw_index = sas->rxq_count;
1612 while (sw_index-- > 0) {
1613 if (sas->rxq_info[sw_index].state & SFC_RXQ_STARTED)
1614 sfc_rx_qstop(sa, sw_index);
1617 efx_rx_fini(sa->nic);
1621 sfc_rx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index,
1622 unsigned int extra_efx_type_flags)
1624 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1625 struct sfc_rxq_info *rxq_info = &sas->rxq_info[sw_index];
1626 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1627 unsigned int max_entries;
1629 max_entries = encp->enc_rxq_max_ndescs;
1630 SFC_ASSERT(rte_is_power_of_2(max_entries));
1632 rxq_info->max_entries = max_entries;
1633 rxq_info->type_flags = extra_efx_type_flags;
1639 sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
1641 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1642 uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
1643 sfc_rx_get_queue_offload_caps(sa);
1644 struct sfc_rss *rss = &sas->rss;
1647 switch (rxmode->mq_mode) {
1648 case ETH_MQ_RX_NONE:
1649 /* No special checks are required */
1652 if (rss->context_type == EFX_RX_SCALE_UNAVAILABLE) {
1653 sfc_err(sa, "RSS is not available");
1658 sfc_err(sa, "Rx multi-queue mode %u not supported",
1664 * Requested offloads are validated against supported by ethdev,
1665 * so unsupported offloads cannot be added as the result of
1668 if ((rxmode->offloads & DEV_RX_OFFLOAD_CHECKSUM) !=
1669 (offloads_supported & DEV_RX_OFFLOAD_CHECKSUM)) {
1670 sfc_warn(sa, "Rx checksum offloads cannot be disabled - always on (IPv4/TCP/UDP)");
1671 rxmode->offloads |= DEV_RX_OFFLOAD_CHECKSUM;
1674 if ((offloads_supported & DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM) &&
1675 (~rxmode->offloads & DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM)) {
1676 sfc_warn(sa, "Rx outer IPv4 checksum offload cannot be disabled - always on");
1677 rxmode->offloads |= DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM;
1684 * Destroy excess queues that are no longer needed after reconfiguration
1685 * or complete close.
1688 sfc_rx_fini_queues(struct sfc_adapter *sa, unsigned int nb_rx_queues)
1690 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1691 sfc_sw_index_t sw_index;
1692 sfc_ethdev_qid_t ethdev_qid;
1694 SFC_ASSERT(nb_rx_queues <= sas->ethdev_rxq_count);
1697 * Finalize only ethdev queues since other ones are finalized only
1698 * on device close and they may require additional deinitializaton.
1700 ethdev_qid = sas->ethdev_rxq_count;
1701 while (--ethdev_qid >= (int)nb_rx_queues) {
1702 struct sfc_rxq_info *rxq_info;
1704 rxq_info = sfc_rxq_info_by_ethdev_qid(sas, ethdev_qid);
1705 if (rxq_info->state & SFC_RXQ_INITIALIZED) {
1706 sw_index = sfc_rxq_sw_index_by_ethdev_rx_qid(sas,
1708 sfc_rx_qfini(sa, sw_index);
1713 sas->ethdev_rxq_count = nb_rx_queues;
1717 * Initialize Rx subsystem.
1719 * Called at device (re)configuration stage when number of receive queues is
1720 * specified together with other device level receive configuration.
1722 * It should be used to allocate NUMA-unaware resources.
1725 sfc_rx_configure(struct sfc_adapter *sa)
1727 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1728 struct sfc_rss *rss = &sas->rss;
1729 struct rte_eth_conf *dev_conf = &sa->eth_dev->data->dev_conf;
1730 const unsigned int nb_rx_queues = sa->eth_dev->data->nb_rx_queues;
1731 const unsigned int nb_rsrv_rx_queues = sfc_nb_reserved_rxq(sas);
1732 const unsigned int nb_rxq_total = nb_rx_queues + nb_rsrv_rx_queues;
1736 sfc_log_init(sa, "nb_rx_queues=%u (old %u)",
1737 nb_rx_queues, sas->ethdev_rxq_count);
1739 rc = sfc_rx_check_mode(sa, &dev_conf->rxmode);
1741 goto fail_check_mode;
1743 if (nb_rxq_total == sas->rxq_count) {
1748 if (sas->rxq_info == NULL) {
1749 reconfigure = false;
1751 sas->rxq_info = rte_calloc_socket("sfc-rxqs", nb_rxq_total,
1752 sizeof(sas->rxq_info[0]), 0,
1754 if (sas->rxq_info == NULL)
1755 goto fail_rxqs_alloc;
1758 * Allocate primary process only RxQ control from heap
1759 * since it should not be shared.
1762 sa->rxq_ctrl = calloc(nb_rxq_total, sizeof(sa->rxq_ctrl[0]));
1763 if (sa->rxq_ctrl == NULL)
1764 goto fail_rxqs_ctrl_alloc;
1766 struct sfc_rxq_info *new_rxq_info;
1767 struct sfc_rxq *new_rxq_ctrl;
1771 /* Do not ununitialize reserved queues */
1772 if (nb_rx_queues < sas->ethdev_rxq_count)
1773 sfc_rx_fini_queues(sa, nb_rx_queues);
1777 rte_realloc(sas->rxq_info,
1778 nb_rxq_total * sizeof(sas->rxq_info[0]), 0);
1779 if (new_rxq_info == NULL && nb_rxq_total > 0)
1780 goto fail_rxqs_realloc;
1783 new_rxq_ctrl = realloc(sa->rxq_ctrl,
1784 nb_rxq_total * sizeof(sa->rxq_ctrl[0]));
1785 if (new_rxq_ctrl == NULL && nb_rxq_total > 0)
1786 goto fail_rxqs_ctrl_realloc;
1788 sas->rxq_info = new_rxq_info;
1789 sa->rxq_ctrl = new_rxq_ctrl;
1790 if (nb_rxq_total > sas->rxq_count) {
1791 unsigned int rxq_count = sas->rxq_count;
1793 memset(&sas->rxq_info[rxq_count], 0,
1794 (nb_rxq_total - rxq_count) *
1795 sizeof(sas->rxq_info[0]));
1796 memset(&sa->rxq_ctrl[rxq_count], 0,
1797 (nb_rxq_total - rxq_count) *
1798 sizeof(sa->rxq_ctrl[0]));
1802 while (sas->ethdev_rxq_count < nb_rx_queues) {
1803 sfc_sw_index_t sw_index;
1805 sw_index = sfc_rxq_sw_index_by_ethdev_rx_qid(sas,
1806 sas->ethdev_rxq_count);
1807 rc = sfc_rx_qinit_info(sa, sw_index, 0);
1809 goto fail_rx_qinit_info;
1811 sas->ethdev_rxq_count++;
1814 sas->rxq_count = sas->ethdev_rxq_count + nb_rsrv_rx_queues;
1817 rc = sfc_mae_counter_rxq_init(sa);
1819 goto fail_count_rxq_init;
1823 rss->channels = (dev_conf->rxmode.mq_mode == ETH_MQ_RX_RSS) ?
1824 MIN(sas->ethdev_rxq_count, EFX_MAXRSS) : 0;
1826 if (rss->channels > 0) {
1827 struct rte_eth_rss_conf *adv_conf_rss;
1828 sfc_sw_index_t sw_index;
1830 for (sw_index = 0; sw_index < EFX_RSS_TBL_SIZE; ++sw_index)
1831 rss->tbl[sw_index] = sw_index % rss->channels;
1833 adv_conf_rss = &dev_conf->rx_adv_conf.rss_conf;
1834 rc = sfc_rx_process_adv_conf_rss(sa, adv_conf_rss);
1836 goto fail_rx_process_adv_conf_rss;
1841 fail_rx_process_adv_conf_rss:
1843 sfc_mae_counter_rxq_fini(sa);
1845 fail_count_rxq_init:
1847 fail_rxqs_ctrl_realloc:
1849 fail_rxqs_ctrl_alloc:
1854 sfc_log_init(sa, "failed %d", rc);
1859 * Shutdown Rx subsystem.
1861 * Called at device close stage, for example, before device shutdown.
1864 sfc_rx_close(struct sfc_adapter *sa)
1866 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1868 sfc_rx_fini_queues(sa, 0);
1869 sfc_mae_counter_rxq_fini(sa);
1874 sa->rxq_ctrl = NULL;
1876 rte_free(sfc_sa2shared(sa)->rxq_info);
1877 sfc_sa2shared(sa)->rxq_info = NULL;