1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2016-2018 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_kvargs.h"
20 #include "sfc_tweak.h"
23 * Maximum number of Rx queue flush attempt in the case of failure or
26 #define SFC_RX_QFLUSH_ATTEMPTS (3)
29 * Time to wait between event queue polling attempts when waiting for Rx
30 * queue flush done or failed events.
32 #define SFC_RX_QFLUSH_POLL_WAIT_MS (1)
35 * Maximum number of event queue polling attempts when waiting for Rx queue
36 * flush done or failed events. It defines Rx queue flush attempt timeout
37 * together with SFC_RX_QFLUSH_POLL_WAIT_MS.
39 #define SFC_RX_QFLUSH_POLL_ATTEMPTS (2000)
42 sfc_rx_qflush_done(struct sfc_rxq_info *rxq_info)
44 rxq_info->state |= SFC_RXQ_FLUSHED;
45 rxq_info->state &= ~SFC_RXQ_FLUSHING;
49 sfc_rx_qflush_failed(struct sfc_rxq_info *rxq_info)
51 rxq_info->state |= SFC_RXQ_FLUSH_FAILED;
52 rxq_info->state &= ~SFC_RXQ_FLUSHING;
56 sfc_efx_rx_qrefill(struct sfc_efx_rxq *rxq)
58 unsigned int free_space;
60 void *objs[SFC_RX_REFILL_BULK];
61 efsys_dma_addr_t addr[RTE_DIM(objs)];
62 unsigned int added = rxq->added;
65 struct sfc_efx_rx_sw_desc *rxd;
67 uint16_t port_id = rxq->dp.dpq.port_id;
69 free_space = rxq->max_fill_level - (added - rxq->completed);
71 if (free_space < rxq->refill_threshold)
74 bulks = free_space / RTE_DIM(objs);
75 /* refill_threshold guarantees that bulks is positive */
76 SFC_ASSERT(bulks > 0);
78 id = added & rxq->ptr_mask;
80 if (unlikely(rte_mempool_get_bulk(rxq->refill_mb_pool, objs,
81 RTE_DIM(objs)) < 0)) {
83 * It is hardly a safe way to increment counter
84 * from different contexts, but all PMDs do it.
86 rxq->evq->sa->eth_dev->data->rx_mbuf_alloc_failed +=
88 /* Return if we have posted nothing yet */
89 if (added == rxq->added)
95 for (i = 0; i < RTE_DIM(objs);
96 ++i, id = (id + 1) & rxq->ptr_mask) {
99 MBUF_RAW_ALLOC_CHECK(m);
101 rxd = &rxq->sw_desc[id];
104 m->data_off = RTE_PKTMBUF_HEADROOM;
107 addr[i] = rte_pktmbuf_iova(m);
110 efx_rx_qpost(rxq->common, addr, rxq->buf_size,
111 RTE_DIM(objs), rxq->completed, added);
112 added += RTE_DIM(objs);
113 } while (--bulks > 0);
115 SFC_ASSERT(added != rxq->added);
117 efx_rx_qpush(rxq->common, added, &rxq->pushed);
121 sfc_efx_rx_desc_flags_to_offload_flags(const unsigned int desc_flags)
123 uint64_t mbuf_flags = 0;
125 switch (desc_flags & (EFX_PKT_IPV4 | EFX_CKSUM_IPV4)) {
126 case (EFX_PKT_IPV4 | EFX_CKSUM_IPV4):
127 mbuf_flags |= PKT_RX_IP_CKSUM_GOOD;
130 mbuf_flags |= PKT_RX_IP_CKSUM_BAD;
133 RTE_BUILD_BUG_ON(PKT_RX_IP_CKSUM_UNKNOWN != 0);
134 SFC_ASSERT((mbuf_flags & PKT_RX_IP_CKSUM_MASK) ==
135 PKT_RX_IP_CKSUM_UNKNOWN);
139 switch ((desc_flags &
140 (EFX_PKT_TCP | EFX_PKT_UDP | EFX_CKSUM_TCPUDP))) {
141 case (EFX_PKT_TCP | EFX_CKSUM_TCPUDP):
142 case (EFX_PKT_UDP | EFX_CKSUM_TCPUDP):
143 mbuf_flags |= PKT_RX_L4_CKSUM_GOOD;
147 mbuf_flags |= PKT_RX_L4_CKSUM_BAD;
150 RTE_BUILD_BUG_ON(PKT_RX_L4_CKSUM_UNKNOWN != 0);
151 SFC_ASSERT((mbuf_flags & PKT_RX_L4_CKSUM_MASK) ==
152 PKT_RX_L4_CKSUM_UNKNOWN);
160 sfc_efx_rx_desc_flags_to_packet_type(const unsigned int desc_flags)
162 return RTE_PTYPE_L2_ETHER |
163 ((desc_flags & EFX_PKT_IPV4) ?
164 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN : 0) |
165 ((desc_flags & EFX_PKT_IPV6) ?
166 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN : 0) |
167 ((desc_flags & EFX_PKT_TCP) ? RTE_PTYPE_L4_TCP : 0) |
168 ((desc_flags & EFX_PKT_UDP) ? RTE_PTYPE_L4_UDP : 0);
171 static const uint32_t *
172 sfc_efx_supported_ptypes_get(__rte_unused uint32_t tunnel_encaps)
174 static const uint32_t ptypes[] = {
176 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
177 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
187 sfc_efx_rx_set_rss_hash(struct sfc_efx_rxq *rxq, unsigned int flags,
193 if ((rxq->flags & SFC_EFX_RXQ_FLAG_RSS_HASH) == 0)
196 mbuf_data = rte_pktmbuf_mtod(m, uint8_t *);
198 if (flags & (EFX_PKT_IPV4 | EFX_PKT_IPV6)) {
199 m->hash.rss = efx_pseudo_hdr_hash_get(rxq->common,
200 EFX_RX_HASHALG_TOEPLITZ,
203 m->ol_flags |= PKT_RX_RSS_HASH;
208 sfc_efx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
210 struct sfc_dp_rxq *dp_rxq = rx_queue;
211 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
212 unsigned int completed;
213 unsigned int prefix_size = rxq->prefix_size;
214 unsigned int done_pkts = 0;
215 boolean_t discard_next = B_FALSE;
216 struct rte_mbuf *scatter_pkt = NULL;
218 if (unlikely((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) == 0))
221 sfc_ev_qpoll(rxq->evq);
223 completed = rxq->completed;
224 while (completed != rxq->pending && done_pkts < nb_pkts) {
226 struct sfc_efx_rx_sw_desc *rxd;
228 unsigned int seg_len;
229 unsigned int desc_flags;
231 id = completed++ & rxq->ptr_mask;
232 rxd = &rxq->sw_desc[id];
234 desc_flags = rxd->flags;
239 if (desc_flags & (EFX_ADDR_MISMATCH | EFX_DISCARD))
242 if (desc_flags & EFX_PKT_PREFIX_LEN) {
246 rc = efx_pseudo_hdr_pkt_length_get(rxq->common,
247 rte_pktmbuf_mtod(m, uint8_t *), &tmp_size);
251 seg_len = rxd->size - prefix_size;
254 rte_pktmbuf_data_len(m) = seg_len;
255 rte_pktmbuf_pkt_len(m) = seg_len;
257 if (scatter_pkt != NULL) {
258 if (rte_pktmbuf_chain(scatter_pkt, m) != 0) {
259 rte_pktmbuf_free(scatter_pkt);
262 /* The packet to deliver */
266 if (desc_flags & EFX_PKT_CONT) {
267 /* The packet is scattered, more fragments to come */
269 /* Further fragments have no prefix */
274 /* Scattered packet is done */
276 /* The first fragment of the packet has prefix */
277 prefix_size = rxq->prefix_size;
280 sfc_efx_rx_desc_flags_to_offload_flags(desc_flags);
282 sfc_efx_rx_desc_flags_to_packet_type(desc_flags);
285 * Extract RSS hash from the packet prefix and
286 * set the corresponding field (if needed and possible)
288 sfc_efx_rx_set_rss_hash(rxq, desc_flags, m);
290 m->data_off += prefix_size;
297 discard_next = ((desc_flags & EFX_PKT_CONT) != 0);
298 rte_mbuf_raw_free(m);
302 /* pending is only moved when entire packet is received */
303 SFC_ASSERT(scatter_pkt == NULL);
305 rxq->completed = completed;
307 sfc_efx_rx_qrefill(rxq);
312 static sfc_dp_rx_qdesc_npending_t sfc_efx_rx_qdesc_npending;
314 sfc_efx_rx_qdesc_npending(struct sfc_dp_rxq *dp_rxq)
316 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
318 if ((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) == 0)
321 sfc_ev_qpoll(rxq->evq);
323 return rxq->pending - rxq->completed;
326 static sfc_dp_rx_qdesc_status_t sfc_efx_rx_qdesc_status;
328 sfc_efx_rx_qdesc_status(struct sfc_dp_rxq *dp_rxq, uint16_t offset)
330 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
332 if (unlikely(offset > rxq->ptr_mask))
336 * Poll EvQ to derive up-to-date 'rxq->pending' figure;
337 * it is required for the queue to be running, but the
338 * check is omitted because API design assumes that it
339 * is the duty of the caller to satisfy all conditions
341 SFC_ASSERT((rxq->flags & SFC_EFX_RXQ_FLAG_RUNNING) ==
342 SFC_EFX_RXQ_FLAG_RUNNING);
343 sfc_ev_qpoll(rxq->evq);
346 * There is a handful of reserved entries in the ring,
347 * but an explicit check whether the offset points to
348 * a reserved entry is neglected since the two checks
349 * below rely on the figures which take the HW limits
350 * into account and thus if an entry is reserved, the
351 * checks will fail and UNAVAIL code will be returned
354 if (offset < (rxq->pending - rxq->completed))
355 return RTE_ETH_RX_DESC_DONE;
357 if (offset < (rxq->added - rxq->completed))
358 return RTE_ETH_RX_DESC_AVAIL;
360 return RTE_ETH_RX_DESC_UNAVAIL;
363 /** Get Rx datapath ops by the datapath RxQ handle */
364 const struct sfc_dp_rx *
365 sfc_dp_rx_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
367 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
368 struct rte_eth_dev *eth_dev;
369 struct sfc_adapter_priv *sap;
371 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
372 eth_dev = &rte_eth_devices[dpq->port_id];
374 sap = sfc_adapter_priv_by_eth_dev(eth_dev);
379 struct sfc_rxq_info *
380 sfc_rxq_info_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
382 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
383 struct rte_eth_dev *eth_dev;
384 struct sfc_adapter_shared *sas;
386 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
387 eth_dev = &rte_eth_devices[dpq->port_id];
389 sas = sfc_adapter_shared_by_eth_dev(eth_dev);
391 SFC_ASSERT(dpq->queue_id < sas->rxq_count);
392 return &sas->rxq_info[dpq->queue_id];
396 sfc_rxq_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq)
398 const struct sfc_dp_queue *dpq = &dp_rxq->dpq;
399 struct rte_eth_dev *eth_dev;
400 struct sfc_adapter *sa;
402 SFC_ASSERT(rte_eth_dev_is_valid_port(dpq->port_id));
403 eth_dev = &rte_eth_devices[dpq->port_id];
405 sa = sfc_adapter_by_eth_dev(eth_dev);
407 SFC_ASSERT(dpq->queue_id < sfc_sa2shared(sa)->rxq_count);
408 return &sa->rxq_ctrl[dpq->queue_id];
411 static sfc_dp_rx_qsize_up_rings_t sfc_efx_rx_qsize_up_rings;
413 sfc_efx_rx_qsize_up_rings(uint16_t nb_rx_desc,
414 __rte_unused struct rte_mempool *mb_pool,
415 unsigned int *rxq_entries,
416 unsigned int *evq_entries,
417 unsigned int *rxq_max_fill_level)
419 *rxq_entries = nb_rx_desc;
420 *evq_entries = nb_rx_desc;
421 *rxq_max_fill_level = EFX_RXQ_LIMIT(*rxq_entries);
425 static sfc_dp_rx_qcreate_t sfc_efx_rx_qcreate;
427 sfc_efx_rx_qcreate(uint16_t port_id, uint16_t queue_id,
428 const struct rte_pci_addr *pci_addr, int socket_id,
429 const struct sfc_dp_rx_qcreate_info *info,
430 struct sfc_dp_rxq **dp_rxqp)
432 struct sfc_efx_rxq *rxq;
436 rxq = rte_zmalloc_socket("sfc-efx-rxq", sizeof(*rxq),
437 RTE_CACHE_LINE_SIZE, socket_id);
441 sfc_dp_queue_init(&rxq->dp.dpq, port_id, queue_id, pci_addr);
444 rxq->sw_desc = rte_calloc_socket("sfc-efx-rxq-sw_desc",
446 sizeof(*rxq->sw_desc),
447 RTE_CACHE_LINE_SIZE, socket_id);
448 if (rxq->sw_desc == NULL)
449 goto fail_desc_alloc;
451 /* efx datapath is bound to efx control path */
452 rxq->evq = sfc_rxq_by_dp_rxq(&rxq->dp)->evq;
453 if (info->flags & SFC_RXQ_FLAG_RSS_HASH)
454 rxq->flags |= SFC_EFX_RXQ_FLAG_RSS_HASH;
455 rxq->ptr_mask = info->rxq_entries - 1;
456 rxq->batch_max = info->batch_max;
457 rxq->prefix_size = info->prefix_size;
458 rxq->max_fill_level = info->max_fill_level;
459 rxq->refill_threshold = info->refill_threshold;
460 rxq->buf_size = info->buf_size;
461 rxq->refill_mb_pool = info->refill_mb_pool;
473 static sfc_dp_rx_qdestroy_t sfc_efx_rx_qdestroy;
475 sfc_efx_rx_qdestroy(struct sfc_dp_rxq *dp_rxq)
477 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
479 rte_free(rxq->sw_desc);
483 static sfc_dp_rx_qstart_t sfc_efx_rx_qstart;
485 sfc_efx_rx_qstart(struct sfc_dp_rxq *dp_rxq,
486 __rte_unused unsigned int evq_read_ptr)
488 /* libefx-based datapath is specific to libefx-based PMD */
489 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
490 struct sfc_rxq *crxq = sfc_rxq_by_dp_rxq(dp_rxq);
492 rxq->common = crxq->common;
494 rxq->pending = rxq->completed = rxq->added = rxq->pushed = 0;
496 sfc_efx_rx_qrefill(rxq);
498 rxq->flags |= (SFC_EFX_RXQ_FLAG_STARTED | SFC_EFX_RXQ_FLAG_RUNNING);
503 static sfc_dp_rx_qstop_t sfc_efx_rx_qstop;
505 sfc_efx_rx_qstop(struct sfc_dp_rxq *dp_rxq,
506 __rte_unused unsigned int *evq_read_ptr)
508 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
510 rxq->flags &= ~SFC_EFX_RXQ_FLAG_RUNNING;
512 /* libefx-based datapath is bound to libefx-based PMD and uses
513 * event queue structure directly. So, there is no necessity to
514 * return EvQ read pointer.
518 static sfc_dp_rx_qpurge_t sfc_efx_rx_qpurge;
520 sfc_efx_rx_qpurge(struct sfc_dp_rxq *dp_rxq)
522 struct sfc_efx_rxq *rxq = sfc_efx_rxq_by_dp_rxq(dp_rxq);
524 struct sfc_efx_rx_sw_desc *rxd;
526 for (i = rxq->completed; i != rxq->added; ++i) {
527 rxd = &rxq->sw_desc[i & rxq->ptr_mask];
528 rte_mbuf_raw_free(rxd->mbuf);
530 /* Packed stream relies on 0 in inactive SW desc.
531 * Rx queue stop is not performance critical, so
532 * there is no harm to do it always.
538 rxq->flags &= ~SFC_EFX_RXQ_FLAG_STARTED;
541 struct sfc_dp_rx sfc_efx_rx = {
543 .name = SFC_KVARG_DATAPATH_EFX,
547 .features = SFC_DP_RX_FEAT_SCATTER |
548 SFC_DP_RX_FEAT_CHECKSUM,
549 .qsize_up_rings = sfc_efx_rx_qsize_up_rings,
550 .qcreate = sfc_efx_rx_qcreate,
551 .qdestroy = sfc_efx_rx_qdestroy,
552 .qstart = sfc_efx_rx_qstart,
553 .qstop = sfc_efx_rx_qstop,
554 .qpurge = sfc_efx_rx_qpurge,
555 .supported_ptypes_get = sfc_efx_supported_ptypes_get,
556 .qdesc_npending = sfc_efx_rx_qdesc_npending,
557 .qdesc_status = sfc_efx_rx_qdesc_status,
558 .pkt_burst = sfc_efx_recv_pkts,
562 sfc_rx_qflush(struct sfc_adapter *sa, unsigned int sw_index)
564 struct sfc_rxq_info *rxq_info;
566 unsigned int retry_count;
567 unsigned int wait_count;
570 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
571 SFC_ASSERT(rxq_info->state & SFC_RXQ_STARTED);
573 rxq = &sa->rxq_ctrl[sw_index];
576 * Retry Rx queue flushing in the case of flush failed or
577 * timeout. In the worst case it can delay for 6 seconds.
579 for (retry_count = 0;
580 ((rxq_info->state & SFC_RXQ_FLUSHED) == 0) &&
581 (retry_count < SFC_RX_QFLUSH_ATTEMPTS);
583 rc = efx_rx_qflush(rxq->common);
585 rxq_info->state |= (rc == EALREADY) ?
586 SFC_RXQ_FLUSHED : SFC_RXQ_FLUSH_FAILED;
589 rxq_info->state &= ~SFC_RXQ_FLUSH_FAILED;
590 rxq_info->state |= SFC_RXQ_FLUSHING;
593 * Wait for Rx queue flush done or failed event at least
594 * SFC_RX_QFLUSH_POLL_WAIT_MS milliseconds and not more
595 * than 2 seconds (SFC_RX_QFLUSH_POLL_WAIT_MS multiplied
596 * by SFC_RX_QFLUSH_POLL_ATTEMPTS).
600 rte_delay_ms(SFC_RX_QFLUSH_POLL_WAIT_MS);
601 sfc_ev_qpoll(rxq->evq);
602 } while ((rxq_info->state & SFC_RXQ_FLUSHING) &&
603 (wait_count++ < SFC_RX_QFLUSH_POLL_ATTEMPTS));
605 if (rxq_info->state & SFC_RXQ_FLUSHING)
606 sfc_err(sa, "RxQ %u flush timed out", sw_index);
608 if (rxq_info->state & SFC_RXQ_FLUSH_FAILED)
609 sfc_err(sa, "RxQ %u flush failed", sw_index);
611 if (rxq_info->state & SFC_RXQ_FLUSHED)
612 sfc_notice(sa, "RxQ %u flushed", sw_index);
615 sa->priv.dp_rx->qpurge(rxq_info->dp);
619 sfc_rx_default_rxq_set_filter(struct sfc_adapter *sa, struct sfc_rxq *rxq)
621 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
622 boolean_t need_rss = (rss->channels > 0) ? B_TRUE : B_FALSE;
623 struct sfc_port *port = &sa->port;
627 * If promiscuous or all-multicast mode has been requested, setting
628 * filter for the default Rx queue might fail, in particular, while
629 * running over PCI function which is not a member of corresponding
630 * privilege groups; if this occurs, few iterations will be made to
631 * repeat this step without promiscuous and all-multicast flags set
634 rc = efx_mac_filter_default_rxq_set(sa->nic, rxq->common, need_rss);
637 else if (rc != EOPNOTSUPP)
641 sfc_warn(sa, "promiscuous mode has been requested, "
642 "but the HW rejects it");
643 sfc_warn(sa, "promiscuous mode will be disabled");
645 port->promisc = B_FALSE;
646 rc = sfc_set_rx_mode(sa);
653 if (port->allmulti) {
654 sfc_warn(sa, "all-multicast mode has been requested, "
655 "but the HW rejects it");
656 sfc_warn(sa, "all-multicast mode will be disabled");
658 port->allmulti = B_FALSE;
659 rc = sfc_set_rx_mode(sa);
670 sfc_rx_qstart(struct sfc_adapter *sa, unsigned int sw_index)
672 struct sfc_rxq_info *rxq_info;
677 sfc_log_init(sa, "sw_index=%u", sw_index);
679 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
681 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
682 SFC_ASSERT(rxq_info->state == SFC_RXQ_INITIALIZED);
684 rxq = &sa->rxq_ctrl[sw_index];
687 rc = sfc_ev_qstart(evq, sfc_evq_index_by_rxq_sw_index(sa, sw_index));
691 switch (rxq_info->type) {
692 case EFX_RXQ_TYPE_DEFAULT:
693 rc = efx_rx_qcreate(sa->nic, rxq->hw_index, 0, rxq_info->type,
694 &rxq->mem, rxq_info->entries, 0 /* not used on EF10 */,
695 rxq_info->type_flags, evq->common, &rxq->common);
697 case EFX_RXQ_TYPE_ES_SUPER_BUFFER: {
698 struct rte_mempool *mp = rxq_info->refill_mb_pool;
699 struct rte_mempool_info mp_info;
701 rc = rte_mempool_ops_get_info(mp, &mp_info);
703 /* Positive errno is used in the driver */
705 goto fail_mp_get_info;
707 if (mp_info.contig_block_size <= 0) {
709 goto fail_bad_contig_block_size;
711 rc = efx_rx_qcreate_es_super_buffer(sa->nic, rxq->hw_index, 0,
712 mp_info.contig_block_size, rxq->buf_size,
713 mp->header_size + mp->elt_size + mp->trailer_size,
714 sa->rxd_wait_timeout_ns,
715 &rxq->mem, rxq_info->entries, rxq_info->type_flags,
716 evq->common, &rxq->common);
723 goto fail_rx_qcreate;
725 efx_rx_qenable(rxq->common);
727 rc = sa->priv.dp_rx->qstart(rxq_info->dp, evq->read_ptr);
731 rxq_info->state |= SFC_RXQ_STARTED;
733 if (sw_index == 0 && !sfc_sa2shared(sa)->isolated) {
734 rc = sfc_rx_default_rxq_set_filter(sa, rxq);
736 goto fail_mac_filter_default_rxq_set;
739 /* It seems to be used by DPDK for debug purposes only ('rte_ether') */
740 sa->eth_dev->data->rx_queue_state[sw_index] =
741 RTE_ETH_QUEUE_STATE_STARTED;
745 fail_mac_filter_default_rxq_set:
746 sa->priv.dp_rx->qstop(rxq_info->dp, &rxq->evq->read_ptr);
749 sfc_rx_qflush(sa, sw_index);
752 fail_bad_contig_block_size:
761 sfc_rx_qstop(struct sfc_adapter *sa, unsigned int sw_index)
763 struct sfc_rxq_info *rxq_info;
766 sfc_log_init(sa, "sw_index=%u", sw_index);
768 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
770 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
772 if (rxq_info->state == SFC_RXQ_INITIALIZED)
774 SFC_ASSERT(rxq_info->state & SFC_RXQ_STARTED);
776 /* It seems to be used by DPDK for debug purposes only ('rte_ether') */
777 sa->eth_dev->data->rx_queue_state[sw_index] =
778 RTE_ETH_QUEUE_STATE_STOPPED;
780 rxq = &sa->rxq_ctrl[sw_index];
781 sa->priv.dp_rx->qstop(rxq_info->dp, &rxq->evq->read_ptr);
784 efx_mac_filter_default_rxq_clear(sa->nic);
786 sfc_rx_qflush(sa, sw_index);
788 rxq_info->state = SFC_RXQ_INITIALIZED;
790 efx_rx_qdestroy(rxq->common);
792 sfc_ev_qstop(rxq->evq);
796 sfc_rx_get_dev_offload_caps(struct sfc_adapter *sa)
798 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
801 caps |= DEV_RX_OFFLOAD_JUMBO_FRAME;
803 if (sa->priv.dp_rx->features & SFC_DP_RX_FEAT_CHECKSUM) {
804 caps |= DEV_RX_OFFLOAD_IPV4_CKSUM;
805 caps |= DEV_RX_OFFLOAD_UDP_CKSUM;
806 caps |= DEV_RX_OFFLOAD_TCP_CKSUM;
809 if (encp->enc_tunnel_encapsulations_supported &&
810 (sa->priv.dp_rx->features & SFC_DP_RX_FEAT_TUNNELS))
811 caps |= DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM;
817 sfc_rx_get_queue_offload_caps(struct sfc_adapter *sa)
821 if (sa->priv.dp_rx->features & SFC_DP_RX_FEAT_SCATTER)
822 caps |= DEV_RX_OFFLOAD_SCATTER;
828 sfc_rx_qcheck_conf(struct sfc_adapter *sa, unsigned int rxq_max_fill_level,
829 const struct rte_eth_rxconf *rx_conf,
830 __rte_unused uint64_t offloads)
834 if (rx_conf->rx_thresh.pthresh != 0 ||
835 rx_conf->rx_thresh.hthresh != 0 ||
836 rx_conf->rx_thresh.wthresh != 0) {
838 "RxQ prefetch/host/writeback thresholds are not supported");
841 if (rx_conf->rx_free_thresh > rxq_max_fill_level) {
843 "RxQ free threshold too large: %u vs maximum %u",
844 rx_conf->rx_free_thresh, rxq_max_fill_level);
848 if (rx_conf->rx_drop_en == 0) {
849 sfc_err(sa, "RxQ drop disable is not supported");
857 sfc_rx_mbuf_data_alignment(struct rte_mempool *mb_pool)
862 /* The mbuf object itself is always cache line aligned */
863 order = rte_bsf32(RTE_CACHE_LINE_SIZE);
865 /* Data offset from mbuf object start */
866 data_off = sizeof(struct rte_mbuf) + rte_pktmbuf_priv_size(mb_pool) +
867 RTE_PKTMBUF_HEADROOM;
869 order = MIN(order, rte_bsf32(data_off));
875 sfc_rx_mb_pool_buf_size(struct sfc_adapter *sa, struct rte_mempool *mb_pool)
877 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
878 const uint32_t nic_align_start = MAX(1, encp->enc_rx_buf_align_start);
879 const uint32_t nic_align_end = MAX(1, encp->enc_rx_buf_align_end);
881 unsigned int buf_aligned;
882 unsigned int start_alignment;
883 unsigned int end_padding_alignment;
885 /* Below it is assumed that both alignments are power of 2 */
886 SFC_ASSERT(rte_is_power_of_2(nic_align_start));
887 SFC_ASSERT(rte_is_power_of_2(nic_align_end));
890 * mbuf is always cache line aligned, double-check
891 * that it meets rx buffer start alignment requirements.
894 /* Start from mbuf pool data room size */
895 buf_size = rte_pktmbuf_data_room_size(mb_pool);
897 /* Remove headroom */
898 if (buf_size <= RTE_PKTMBUF_HEADROOM) {
900 "RxQ mbuf pool %s object data room size %u is smaller than headroom %u",
901 mb_pool->name, buf_size, RTE_PKTMBUF_HEADROOM);
904 buf_size -= RTE_PKTMBUF_HEADROOM;
906 /* Calculate guaranteed data start alignment */
907 buf_aligned = sfc_rx_mbuf_data_alignment(mb_pool);
909 /* Reserve space for start alignment */
910 if (buf_aligned < nic_align_start) {
911 start_alignment = nic_align_start - buf_aligned;
912 if (buf_size <= start_alignment) {
914 "RxQ mbuf pool %s object data room size %u is insufficient for headroom %u and buffer start alignment %u required by NIC",
916 rte_pktmbuf_data_room_size(mb_pool),
917 RTE_PKTMBUF_HEADROOM, start_alignment);
920 buf_aligned = nic_align_start;
921 buf_size -= start_alignment;
926 /* Make sure that end padding does not write beyond the buffer */
927 if (buf_aligned < nic_align_end) {
929 * Estimate space which can be lost. If guarnteed buffer
930 * size is odd, lost space is (nic_align_end - 1). More
931 * accurate formula is below.
933 end_padding_alignment = nic_align_end -
934 MIN(buf_aligned, 1u << (rte_bsf32(buf_size) - 1));
935 if (buf_size <= end_padding_alignment) {
937 "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",
939 rte_pktmbuf_data_room_size(mb_pool),
940 RTE_PKTMBUF_HEADROOM, start_alignment,
941 end_padding_alignment);
944 buf_size -= end_padding_alignment;
947 * Start is aligned the same or better than end,
950 buf_size = P2ALIGN(buf_size, nic_align_end);
957 sfc_rx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
958 uint16_t nb_rx_desc, unsigned int socket_id,
959 const struct rte_eth_rxconf *rx_conf,
960 struct rte_mempool *mb_pool)
962 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
963 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
965 unsigned int rxq_entries;
966 unsigned int evq_entries;
967 unsigned int rxq_max_fill_level;
970 struct sfc_rxq_info *rxq_info;
973 struct sfc_dp_rx_qcreate_info info;
975 rc = sa->priv.dp_rx->qsize_up_rings(nb_rx_desc, mb_pool, &rxq_entries,
976 &evq_entries, &rxq_max_fill_level);
978 goto fail_size_up_rings;
979 SFC_ASSERT(rxq_entries >= EFX_RXQ_MINNDESCS);
980 SFC_ASSERT(rxq_entries <= EFX_RXQ_MAXNDESCS);
981 SFC_ASSERT(rxq_max_fill_level <= nb_rx_desc);
983 offloads = rx_conf->offloads |
984 sa->eth_dev->data->dev_conf.rxmode.offloads;
985 rc = sfc_rx_qcheck_conf(sa, rxq_max_fill_level, rx_conf, offloads);
989 buf_size = sfc_rx_mb_pool_buf_size(sa, mb_pool);
991 sfc_err(sa, "RxQ %u mbuf pool object size is too small",
997 if ((buf_size < sa->port.pdu + encp->enc_rx_prefix_size) &&
998 (~offloads & DEV_RX_OFFLOAD_SCATTER)) {
999 sfc_err(sa, "Rx scatter is disabled and RxQ %u mbuf pool "
1000 "object size is too small", sw_index);
1001 sfc_err(sa, "RxQ %u calculated Rx buffer size is %u vs "
1002 "PDU size %u plus Rx prefix %u bytes",
1003 sw_index, buf_size, (unsigned int)sa->port.pdu,
1004 encp->enc_rx_prefix_size);
1009 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
1010 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
1012 SFC_ASSERT(rxq_entries <= rxq_info->max_entries);
1013 rxq_info->entries = rxq_entries;
1015 if (sa->priv.dp_rx->dp.hw_fw_caps & SFC_DP_HW_FW_CAP_RX_ES_SUPER_BUFFER)
1016 rxq_info->type = EFX_RXQ_TYPE_ES_SUPER_BUFFER;
1018 rxq_info->type = EFX_RXQ_TYPE_DEFAULT;
1020 rxq_info->type_flags =
1021 (offloads & DEV_RX_OFFLOAD_SCATTER) ?
1022 EFX_RXQ_FLAG_SCATTER : EFX_RXQ_FLAG_NONE;
1024 if ((encp->enc_tunnel_encapsulations_supported != 0) &&
1025 (sa->priv.dp_rx->features & SFC_DP_RX_FEAT_TUNNELS))
1026 rxq_info->type_flags |= EFX_RXQ_FLAG_INNER_CLASSES;
1028 rc = sfc_ev_qinit(sa, SFC_EVQ_TYPE_RX, sw_index,
1029 evq_entries, socket_id, &evq);
1033 rxq = &sa->rxq_ctrl[sw_index];
1035 rxq->hw_index = sw_index;
1036 rxq_info->refill_threshold =
1037 RTE_MAX(rx_conf->rx_free_thresh, SFC_RX_REFILL_BULK);
1038 rxq_info->refill_mb_pool = mb_pool;
1039 rxq->buf_size = buf_size;
1041 rc = sfc_dma_alloc(sa, "rxq", sw_index, EFX_RXQ_SIZE(rxq_info->entries),
1042 socket_id, &rxq->mem);
1044 goto fail_dma_alloc;
1046 memset(&info, 0, sizeof(info));
1047 info.refill_mb_pool = rxq_info->refill_mb_pool;
1048 info.max_fill_level = rxq_max_fill_level;
1049 info.refill_threshold = rxq_info->refill_threshold;
1050 info.buf_size = buf_size;
1051 info.batch_max = encp->enc_rx_batch_max;
1052 info.prefix_size = encp->enc_rx_prefix_size;
1054 if (rss->hash_support == EFX_RX_HASH_AVAILABLE && rss->channels > 0)
1055 info.flags |= SFC_RXQ_FLAG_RSS_HASH;
1057 info.rxq_entries = rxq_info->entries;
1058 info.rxq_hw_ring = rxq->mem.esm_base;
1059 info.evq_entries = evq_entries;
1060 info.evq_hw_ring = evq->mem.esm_base;
1061 info.hw_index = rxq->hw_index;
1062 info.mem_bar = sa->mem_bar.esb_base;
1063 info.vi_window_shift = encp->enc_vi_window_shift;
1065 rc = sa->priv.dp_rx->qcreate(sa->eth_dev->data->port_id, sw_index,
1066 &RTE_ETH_DEV_TO_PCI(sa->eth_dev)->addr,
1067 socket_id, &info, &rxq_info->dp);
1069 goto fail_dp_rx_qcreate;
1071 evq->dp_rxq = rxq_info->dp;
1073 rxq_info->state = SFC_RXQ_INITIALIZED;
1075 rxq_info->deferred_start = (rx_conf->rx_deferred_start != 0);
1080 sfc_dma_free(sa, &rxq->mem);
1086 rxq_info->entries = 0;
1090 sfc_log_init(sa, "failed %d", rc);
1095 sfc_rx_qfini(struct sfc_adapter *sa, unsigned int sw_index)
1097 struct sfc_rxq_info *rxq_info;
1098 struct sfc_rxq *rxq;
1100 SFC_ASSERT(sw_index < sfc_sa2shared(sa)->rxq_count);
1101 sa->eth_dev->data->rx_queues[sw_index] = NULL;
1103 rxq_info = &sfc_sa2shared(sa)->rxq_info[sw_index];
1105 SFC_ASSERT(rxq_info->state == SFC_RXQ_INITIALIZED);
1107 sa->priv.dp_rx->qdestroy(rxq_info->dp);
1108 rxq_info->dp = NULL;
1110 rxq_info->state &= ~SFC_RXQ_INITIALIZED;
1111 rxq_info->entries = 0;
1113 rxq = &sa->rxq_ctrl[sw_index];
1115 sfc_dma_free(sa, &rxq->mem);
1117 sfc_ev_qfini(rxq->evq);
1122 * Mapping between RTE RSS hash functions and their EFX counterparts.
1124 static const struct sfc_rss_hf_rte_to_efx sfc_rss_hf_map[] = {
1125 { ETH_RSS_NONFRAG_IPV4_TCP,
1126 EFX_RX_HASH(IPV4_TCP, 4TUPLE) },
1127 { ETH_RSS_NONFRAG_IPV4_UDP,
1128 EFX_RX_HASH(IPV4_UDP, 4TUPLE) },
1129 { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_IPV6_TCP_EX,
1130 EFX_RX_HASH(IPV6_TCP, 4TUPLE) },
1131 { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_IPV6_UDP_EX,
1132 EFX_RX_HASH(IPV6_UDP, 4TUPLE) },
1133 { ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | ETH_RSS_NONFRAG_IPV4_OTHER,
1134 EFX_RX_HASH(IPV4_TCP, 2TUPLE) | EFX_RX_HASH(IPV4_UDP, 2TUPLE) |
1135 EFX_RX_HASH(IPV4, 2TUPLE) },
1136 { ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | ETH_RSS_NONFRAG_IPV6_OTHER |
1138 EFX_RX_HASH(IPV6_TCP, 2TUPLE) | EFX_RX_HASH(IPV6_UDP, 2TUPLE) |
1139 EFX_RX_HASH(IPV6, 2TUPLE) }
1142 static efx_rx_hash_type_t
1143 sfc_rx_hash_types_mask_supp(efx_rx_hash_type_t hash_type,
1144 unsigned int *hash_type_flags_supported,
1145 unsigned int nb_hash_type_flags_supported)
1147 efx_rx_hash_type_t hash_type_masked = 0;
1150 for (i = 0; i < nb_hash_type_flags_supported; ++i) {
1151 unsigned int class_tuple_lbn[] = {
1152 EFX_RX_CLASS_IPV4_TCP_LBN,
1153 EFX_RX_CLASS_IPV4_UDP_LBN,
1154 EFX_RX_CLASS_IPV4_LBN,
1155 EFX_RX_CLASS_IPV6_TCP_LBN,
1156 EFX_RX_CLASS_IPV6_UDP_LBN,
1157 EFX_RX_CLASS_IPV6_LBN
1160 for (j = 0; j < RTE_DIM(class_tuple_lbn); ++j) {
1161 unsigned int tuple_mask = EFX_RX_CLASS_HASH_4TUPLE;
1164 tuple_mask <<= class_tuple_lbn[j];
1165 flag = hash_type & tuple_mask;
1167 if (flag == hash_type_flags_supported[i])
1168 hash_type_masked |= flag;
1172 return hash_type_masked;
1176 sfc_rx_hash_init(struct sfc_adapter *sa)
1178 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1179 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1180 uint32_t alg_mask = encp->enc_rx_scale_hash_alg_mask;
1181 efx_rx_hash_alg_t alg;
1182 unsigned int flags_supp[EFX_RX_HASH_NFLAGS];
1183 unsigned int nb_flags_supp;
1184 struct sfc_rss_hf_rte_to_efx *hf_map;
1185 struct sfc_rss_hf_rte_to_efx *entry;
1186 efx_rx_hash_type_t efx_hash_types;
1190 if (alg_mask & (1U << EFX_RX_HASHALG_TOEPLITZ))
1191 alg = EFX_RX_HASHALG_TOEPLITZ;
1192 else if (alg_mask & (1U << EFX_RX_HASHALG_PACKED_STREAM))
1193 alg = EFX_RX_HASHALG_PACKED_STREAM;
1197 rc = efx_rx_scale_hash_flags_get(sa->nic, alg, flags_supp,
1198 RTE_DIM(flags_supp), &nb_flags_supp);
1202 hf_map = rte_calloc_socket("sfc-rss-hf-map",
1203 RTE_DIM(sfc_rss_hf_map),
1204 sizeof(*hf_map), 0, sa->socket_id);
1210 for (i = 0; i < RTE_DIM(sfc_rss_hf_map); ++i) {
1211 efx_rx_hash_type_t ht;
1213 ht = sfc_rx_hash_types_mask_supp(sfc_rss_hf_map[i].efx,
1214 flags_supp, nb_flags_supp);
1216 entry->rte = sfc_rss_hf_map[i].rte;
1218 efx_hash_types |= ht;
1223 rss->hash_alg = alg;
1224 rss->hf_map_nb_entries = (unsigned int)(entry - hf_map);
1225 rss->hf_map = hf_map;
1226 rss->hash_types = efx_hash_types;
1232 sfc_rx_hash_fini(struct sfc_adapter *sa)
1234 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1236 rte_free(rss->hf_map);
1240 sfc_rx_hf_rte_to_efx(struct sfc_adapter *sa, uint64_t rte,
1241 efx_rx_hash_type_t *efx)
1243 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1244 efx_rx_hash_type_t hash_types = 0;
1247 for (i = 0; i < rss->hf_map_nb_entries; ++i) {
1248 uint64_t rte_mask = rss->hf_map[i].rte;
1250 if ((rte & rte_mask) != 0) {
1252 hash_types |= rss->hf_map[i].efx;
1257 sfc_err(sa, "unsupported hash functions requested");
1267 sfc_rx_hf_efx_to_rte(struct sfc_rss *rss, efx_rx_hash_type_t efx)
1272 for (i = 0; i < rss->hf_map_nb_entries; ++i) {
1273 efx_rx_hash_type_t hash_type = rss->hf_map[i].efx;
1275 if ((efx & hash_type) == hash_type)
1276 rte |= rss->hf_map[i].rte;
1283 sfc_rx_process_adv_conf_rss(struct sfc_adapter *sa,
1284 struct rte_eth_rss_conf *conf)
1286 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1287 efx_rx_hash_type_t efx_hash_types = rss->hash_types;
1288 uint64_t rss_hf = sfc_rx_hf_efx_to_rte(rss, efx_hash_types);
1291 if (rss->context_type != EFX_RX_SCALE_EXCLUSIVE) {
1292 if ((conf->rss_hf != 0 && conf->rss_hf != rss_hf) ||
1293 conf->rss_key != NULL)
1297 if (conf->rss_hf != 0) {
1298 rc = sfc_rx_hf_rte_to_efx(sa, conf->rss_hf, &efx_hash_types);
1303 if (conf->rss_key != NULL) {
1304 if (conf->rss_key_len != sizeof(rss->key)) {
1305 sfc_err(sa, "RSS key size is wrong (should be %lu)",
1309 rte_memcpy(rss->key, conf->rss_key, sizeof(rss->key));
1312 rss->hash_types = efx_hash_types;
1318 sfc_rx_rss_config(struct sfc_adapter *sa)
1320 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1323 if (rss->channels > 0) {
1324 rc = efx_rx_scale_mode_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1325 rss->hash_alg, rss->hash_types,
1330 rc = efx_rx_scale_key_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1331 rss->key, sizeof(rss->key));
1335 rc = efx_rx_scale_tbl_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1336 rss->tbl, RTE_DIM(rss->tbl));
1344 sfc_rx_start(struct sfc_adapter *sa)
1346 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1347 unsigned int sw_index;
1350 sfc_log_init(sa, "rxq_count=%u", sas->rxq_count);
1352 rc = efx_rx_init(sa->nic);
1356 rc = sfc_rx_rss_config(sa);
1358 goto fail_rss_config;
1360 for (sw_index = 0; sw_index < sas->rxq_count; ++sw_index) {
1361 if (sas->rxq_info[sw_index].state == SFC_RXQ_INITIALIZED &&
1362 (!sas->rxq_info[sw_index].deferred_start ||
1363 sas->rxq_info[sw_index].deferred_started)) {
1364 rc = sfc_rx_qstart(sa, sw_index);
1366 goto fail_rx_qstart;
1373 while (sw_index-- > 0)
1374 sfc_rx_qstop(sa, sw_index);
1377 efx_rx_fini(sa->nic);
1380 sfc_log_init(sa, "failed %d", rc);
1385 sfc_rx_stop(struct sfc_adapter *sa)
1387 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1388 unsigned int sw_index;
1390 sfc_log_init(sa, "rxq_count=%u", sas->rxq_count);
1392 sw_index = sas->rxq_count;
1393 while (sw_index-- > 0) {
1394 if (sas->rxq_info[sw_index].state & SFC_RXQ_STARTED)
1395 sfc_rx_qstop(sa, sw_index);
1398 efx_rx_fini(sa->nic);
1402 sfc_rx_qinit_info(struct sfc_adapter *sa, unsigned int sw_index)
1404 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1405 struct sfc_rxq_info *rxq_info = &sas->rxq_info[sw_index];
1406 unsigned int max_entries;
1408 max_entries = EFX_RXQ_MAXNDESCS;
1409 SFC_ASSERT(rte_is_power_of_2(max_entries));
1411 rxq_info->max_entries = max_entries;
1417 sfc_rx_check_mode(struct sfc_adapter *sa, struct rte_eth_rxmode *rxmode)
1419 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1420 uint64_t offloads_supported = sfc_rx_get_dev_offload_caps(sa) |
1421 sfc_rx_get_queue_offload_caps(sa);
1422 struct sfc_rss *rss = &sas->rss;
1425 switch (rxmode->mq_mode) {
1426 case ETH_MQ_RX_NONE:
1427 /* No special checks are required */
1430 if (rss->context_type == EFX_RX_SCALE_UNAVAILABLE) {
1431 sfc_err(sa, "RSS is not available");
1436 sfc_err(sa, "Rx multi-queue mode %u not supported",
1442 * Requested offloads are validated against supported by ethdev,
1443 * so unsupported offloads cannot be added as the result of
1446 if ((rxmode->offloads & DEV_RX_OFFLOAD_CHECKSUM) !=
1447 (offloads_supported & DEV_RX_OFFLOAD_CHECKSUM)) {
1448 sfc_warn(sa, "Rx checksum offloads cannot be disabled - always on (IPv4/TCP/UDP)");
1449 rxmode->offloads |= DEV_RX_OFFLOAD_CHECKSUM;
1452 if ((offloads_supported & DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM) &&
1453 (~rxmode->offloads & DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM)) {
1454 sfc_warn(sa, "Rx outer IPv4 checksum offload cannot be disabled - always on");
1455 rxmode->offloads |= DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM;
1462 * Destroy excess queues that are no longer needed after reconfiguration
1463 * or complete close.
1466 sfc_rx_fini_queues(struct sfc_adapter *sa, unsigned int nb_rx_queues)
1468 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1471 SFC_ASSERT(nb_rx_queues <= sas->rxq_count);
1473 sw_index = sas->rxq_count;
1474 while (--sw_index >= (int)nb_rx_queues) {
1475 if (sas->rxq_info[sw_index].state & SFC_RXQ_INITIALIZED)
1476 sfc_rx_qfini(sa, sw_index);
1479 sas->rxq_count = nb_rx_queues;
1483 * Initialize Rx subsystem.
1485 * Called at device (re)configuration stage when number of receive queues is
1486 * specified together with other device level receive configuration.
1488 * It should be used to allocate NUMA-unaware resources.
1491 sfc_rx_configure(struct sfc_adapter *sa)
1493 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1494 struct sfc_rss *rss = &sas->rss;
1495 struct rte_eth_conf *dev_conf = &sa->eth_dev->data->dev_conf;
1496 const unsigned int nb_rx_queues = sa->eth_dev->data->nb_rx_queues;
1499 sfc_log_init(sa, "nb_rx_queues=%u (old %u)",
1500 nb_rx_queues, sas->rxq_count);
1502 rc = sfc_rx_check_mode(sa, &dev_conf->rxmode);
1504 goto fail_check_mode;
1506 if (nb_rx_queues == sas->rxq_count)
1509 if (sas->rxq_info == NULL) {
1511 sas->rxq_info = rte_calloc_socket("sfc-rxqs", nb_rx_queues,
1512 sizeof(sas->rxq_info[0]), 0,
1514 if (sas->rxq_info == NULL)
1515 goto fail_rxqs_alloc;
1518 * Allocate primary process only RxQ control from heap
1519 * since it should not be shared.
1522 sa->rxq_ctrl = calloc(nb_rx_queues, sizeof(sa->rxq_ctrl[0]));
1523 if (sa->rxq_ctrl == NULL)
1524 goto fail_rxqs_ctrl_alloc;
1526 struct sfc_rxq_info *new_rxq_info;
1527 struct sfc_rxq *new_rxq_ctrl;
1529 if (nb_rx_queues < sas->rxq_count)
1530 sfc_rx_fini_queues(sa, nb_rx_queues);
1534 rte_realloc(sas->rxq_info,
1535 nb_rx_queues * sizeof(sas->rxq_info[0]), 0);
1536 if (new_rxq_info == NULL && nb_rx_queues > 0)
1537 goto fail_rxqs_realloc;
1540 new_rxq_ctrl = realloc(sa->rxq_ctrl,
1541 nb_rx_queues * sizeof(sa->rxq_ctrl[0]));
1542 if (new_rxq_ctrl == NULL && nb_rx_queues > 0)
1543 goto fail_rxqs_ctrl_realloc;
1545 sas->rxq_info = new_rxq_info;
1546 sa->rxq_ctrl = new_rxq_ctrl;
1547 if (nb_rx_queues > sas->rxq_count) {
1548 memset(&sas->rxq_info[sas->rxq_count], 0,
1549 (nb_rx_queues - sas->rxq_count) *
1550 sizeof(sas->rxq_info[0]));
1551 memset(&sa->rxq_ctrl[sas->rxq_count], 0,
1552 (nb_rx_queues - sas->rxq_count) *
1553 sizeof(sa->rxq_ctrl[0]));
1557 while (sas->rxq_count < nb_rx_queues) {
1558 rc = sfc_rx_qinit_info(sa, sas->rxq_count);
1560 goto fail_rx_qinit_info;
1566 rss->channels = (dev_conf->rxmode.mq_mode == ETH_MQ_RX_RSS) ?
1567 MIN(sas->rxq_count, EFX_MAXRSS) : 0;
1569 if (rss->channels > 0) {
1570 struct rte_eth_rss_conf *adv_conf_rss;
1571 unsigned int sw_index;
1573 for (sw_index = 0; sw_index < EFX_RSS_TBL_SIZE; ++sw_index)
1574 rss->tbl[sw_index] = sw_index % rss->channels;
1576 adv_conf_rss = &dev_conf->rx_adv_conf.rss_conf;
1577 rc = sfc_rx_process_adv_conf_rss(sa, adv_conf_rss);
1579 goto fail_rx_process_adv_conf_rss;
1584 fail_rx_process_adv_conf_rss:
1586 fail_rxqs_ctrl_realloc:
1588 fail_rxqs_ctrl_alloc:
1593 sfc_log_init(sa, "failed %d", rc);
1598 * Shutdown Rx subsystem.
1600 * Called at device close stage, for example, before device shutdown.
1603 sfc_rx_close(struct sfc_adapter *sa)
1605 struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1607 sfc_rx_fini_queues(sa, 0);
1612 sa->rxq_ctrl = NULL;
1614 rte_free(sfc_sa2shared(sa)->rxq_info);
1615 sfc_sa2shared(sa)->rxq_info = NULL;