1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox Technologies, Ltd
12 #include <sys/queue.h>
15 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
17 #pragma GCC diagnostic ignored "-Wpedantic"
19 #include <infiniband/verbs.h>
20 #include <infiniband/mlx5dv.h>
22 #pragma GCC diagnostic error "-Wpedantic"
26 #include <rte_malloc.h>
27 #include <rte_ethdev_driver.h>
28 #include <rte_common.h>
29 #include <rte_interrupts.h>
30 #include <rte_debug.h>
34 #include "mlx5_rxtx.h"
35 #include "mlx5_utils.h"
36 #include "mlx5_autoconf.h"
37 #include "mlx5_defs.h"
38 #include "mlx5_glue.h"
40 /* Default RSS hash key also used for ConnectX-3. */
41 uint8_t rss_hash_default_key[] = {
42 0x2c, 0xc6, 0x81, 0xd1,
43 0x5b, 0xdb, 0xf4, 0xf7,
44 0xfc, 0xa2, 0x83, 0x19,
45 0xdb, 0x1a, 0x3e, 0x94,
46 0x6b, 0x9e, 0x38, 0xd9,
47 0x2c, 0x9c, 0x03, 0xd1,
48 0xad, 0x99, 0x44, 0xa7,
49 0xd9, 0x56, 0x3d, 0x59,
50 0x06, 0x3c, 0x25, 0xf3,
51 0xfc, 0x1f, 0xdc, 0x2a,
54 /* Length of the default RSS hash key. */
55 static_assert(MLX5_RSS_HASH_KEY_LEN ==
56 (unsigned int)sizeof(rss_hash_default_key),
57 "wrong RSS default key size.");
60 * Check whether Multi-Packet RQ can be enabled for the device.
63 * Pointer to Ethernet device.
66 * 1 if supported, negative errno value if not.
69 mlx5_check_mprq_support(struct rte_eth_dev *dev)
71 struct priv *priv = dev->data->dev_private;
73 if (priv->config.mprq.enabled &&
74 priv->rxqs_n >= priv->config.mprq.min_rxqs_num)
80 * Check whether Multi-Packet RQ is enabled for the Rx queue.
83 * Pointer to receive queue structure.
86 * 0 if disabled, otherwise enabled.
89 mlx5_rxq_mprq_enabled(struct mlx5_rxq_data *rxq)
91 return rxq->strd_num_n > 0;
95 * Check whether Multi-Packet RQ is enabled for the device.
98 * Pointer to Ethernet device.
101 * 0 if disabled, otherwise enabled.
104 mlx5_mprq_enabled(struct rte_eth_dev *dev)
106 struct priv *priv = dev->data->dev_private;
110 if (mlx5_check_mprq_support(dev) < 0)
112 /* All the configured queues should be enabled. */
113 for (i = 0; i < priv->rxqs_n; ++i) {
114 struct mlx5_rxq_data *rxq = (*priv->rxqs)[i];
118 if (mlx5_rxq_mprq_enabled(rxq))
121 /* Multi-Packet RQ can't be partially configured. */
122 assert(n == 0 || n == priv->rxqs_n);
123 return n == priv->rxqs_n;
127 * Allocate RX queue elements for Multi-Packet RQ.
130 * Pointer to RX queue structure.
133 * 0 on success, a negative errno value otherwise and rte_errno is set.
136 rxq_alloc_elts_mprq(struct mlx5_rxq_ctrl *rxq_ctrl)
138 struct mlx5_rxq_data *rxq = &rxq_ctrl->rxq;
139 unsigned int wqe_n = 1 << rxq->elts_n;
143 /* Iterate on segments. */
144 for (i = 0; i <= wqe_n; ++i) {
145 struct mlx5_mprq_buf *buf;
147 if (rte_mempool_get(rxq->mprq_mp, (void **)&buf) < 0) {
148 DRV_LOG(ERR, "port %u empty mbuf pool", rxq->port_id);
153 (*rxq->mprq_bufs)[i] = buf;
155 rxq->mprq_repl = buf;
158 "port %u Rx queue %u allocated and configured %u segments",
159 rxq->port_id, rxq_ctrl->idx, wqe_n);
162 err = rte_errno; /* Save rte_errno before cleanup. */
164 for (i = 0; (i != wqe_n); ++i) {
165 if ((*rxq->mprq_bufs)[i] != NULL)
166 rte_mempool_put(rxq->mprq_mp,
167 (*rxq->mprq_bufs)[i]);
168 (*rxq->mprq_bufs)[i] = NULL;
170 DRV_LOG(DEBUG, "port %u Rx queue %u failed, freed everything",
171 rxq->port_id, rxq_ctrl->idx);
172 rte_errno = err; /* Restore rte_errno. */
177 * Allocate RX queue elements for Single-Packet RQ.
180 * Pointer to RX queue structure.
183 * 0 on success, errno value on failure.
186 rxq_alloc_elts_sprq(struct mlx5_rxq_ctrl *rxq_ctrl)
188 const unsigned int sges_n = 1 << rxq_ctrl->rxq.sges_n;
189 unsigned int elts_n = 1 << rxq_ctrl->rxq.elts_n;
193 /* Iterate on segments. */
194 for (i = 0; (i != elts_n); ++i) {
195 struct rte_mbuf *buf;
197 buf = rte_pktmbuf_alloc(rxq_ctrl->rxq.mp);
199 DRV_LOG(ERR, "port %u empty mbuf pool",
200 PORT_ID(rxq_ctrl->priv));
204 /* Headroom is reserved by rte_pktmbuf_alloc(). */
205 assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM);
206 /* Buffer is supposed to be empty. */
207 assert(rte_pktmbuf_data_len(buf) == 0);
208 assert(rte_pktmbuf_pkt_len(buf) == 0);
210 /* Only the first segment keeps headroom. */
212 SET_DATA_OFF(buf, 0);
213 PORT(buf) = rxq_ctrl->rxq.port_id;
214 DATA_LEN(buf) = rte_pktmbuf_tailroom(buf);
215 PKT_LEN(buf) = DATA_LEN(buf);
217 (*rxq_ctrl->rxq.elts)[i] = buf;
219 /* If Rx vector is activated. */
220 if (mlx5_rxq_check_vec_support(&rxq_ctrl->rxq) > 0) {
221 struct mlx5_rxq_data *rxq = &rxq_ctrl->rxq;
222 struct rte_mbuf *mbuf_init = &rxq->fake_mbuf;
225 /* Initialize default rearm_data for vPMD. */
226 mbuf_init->data_off = RTE_PKTMBUF_HEADROOM;
227 rte_mbuf_refcnt_set(mbuf_init, 1);
228 mbuf_init->nb_segs = 1;
229 mbuf_init->port = rxq->port_id;
231 * prevent compiler reordering:
232 * rearm_data covers previous fields.
234 rte_compiler_barrier();
235 rxq->mbuf_initializer =
236 *(uint64_t *)&mbuf_init->rearm_data;
237 /* Padding with a fake mbuf for vectorized Rx. */
238 for (j = 0; j < MLX5_VPMD_DESCS_PER_LOOP; ++j)
239 (*rxq->elts)[elts_n + j] = &rxq->fake_mbuf;
242 "port %u Rx queue %u allocated and configured %u segments"
244 PORT_ID(rxq_ctrl->priv), rxq_ctrl->idx, elts_n,
245 elts_n / (1 << rxq_ctrl->rxq.sges_n));
248 err = rte_errno; /* Save rte_errno before cleanup. */
250 for (i = 0; (i != elts_n); ++i) {
251 if ((*rxq_ctrl->rxq.elts)[i] != NULL)
252 rte_pktmbuf_free_seg((*rxq_ctrl->rxq.elts)[i]);
253 (*rxq_ctrl->rxq.elts)[i] = NULL;
255 DRV_LOG(DEBUG, "port %u Rx queue %u failed, freed everything",
256 PORT_ID(rxq_ctrl->priv), rxq_ctrl->idx);
257 rte_errno = err; /* Restore rte_errno. */
262 * Allocate RX queue elements.
265 * Pointer to RX queue structure.
268 * 0 on success, errno value on failure.
271 rxq_alloc_elts(struct mlx5_rxq_ctrl *rxq_ctrl)
273 return mlx5_rxq_mprq_enabled(&rxq_ctrl->rxq) ?
274 rxq_alloc_elts_mprq(rxq_ctrl) : rxq_alloc_elts_sprq(rxq_ctrl);
278 * Free RX queue elements for Multi-Packet RQ.
281 * Pointer to RX queue structure.
284 rxq_free_elts_mprq(struct mlx5_rxq_ctrl *rxq_ctrl)
286 struct mlx5_rxq_data *rxq = &rxq_ctrl->rxq;
289 DRV_LOG(DEBUG, "port %u Multi-Packet Rx queue %u freeing WRs",
290 rxq->port_id, rxq_ctrl->idx);
291 if (rxq->mprq_bufs == NULL)
293 assert(mlx5_rxq_check_vec_support(rxq) < 0);
294 for (i = 0; (i != (1u << rxq->elts_n)); ++i) {
295 if ((*rxq->mprq_bufs)[i] != NULL)
296 mlx5_mprq_buf_free((*rxq->mprq_bufs)[i]);
297 (*rxq->mprq_bufs)[i] = NULL;
299 if (rxq->mprq_repl != NULL) {
300 mlx5_mprq_buf_free(rxq->mprq_repl);
301 rxq->mprq_repl = NULL;
306 * Free RX queue elements for Single-Packet RQ.
309 * Pointer to RX queue structure.
312 rxq_free_elts_sprq(struct mlx5_rxq_ctrl *rxq_ctrl)
314 struct mlx5_rxq_data *rxq = &rxq_ctrl->rxq;
315 const uint16_t q_n = (1 << rxq->elts_n);
316 const uint16_t q_mask = q_n - 1;
317 uint16_t used = q_n - (rxq->rq_ci - rxq->rq_pi);
320 DRV_LOG(DEBUG, "port %u Rx queue %u freeing WRs",
321 PORT_ID(rxq_ctrl->priv), rxq_ctrl->idx);
322 if (rxq->elts == NULL)
325 * Some mbuf in the Ring belongs to the application. They cannot be
328 if (mlx5_rxq_check_vec_support(rxq) > 0) {
329 for (i = 0; i < used; ++i)
330 (*rxq->elts)[(rxq->rq_ci + i) & q_mask] = NULL;
331 rxq->rq_pi = rxq->rq_ci;
333 for (i = 0; (i != (1u << rxq->elts_n)); ++i) {
334 if ((*rxq->elts)[i] != NULL)
335 rte_pktmbuf_free_seg((*rxq->elts)[i]);
336 (*rxq->elts)[i] = NULL;
341 * Free RX queue elements.
344 * Pointer to RX queue structure.
347 rxq_free_elts(struct mlx5_rxq_ctrl *rxq_ctrl)
349 if (mlx5_rxq_mprq_enabled(&rxq_ctrl->rxq))
350 rxq_free_elts_mprq(rxq_ctrl);
352 rxq_free_elts_sprq(rxq_ctrl);
356 * Clean up a RX queue.
358 * Destroy objects, free allocated memory and reset the structure for reuse.
361 * Pointer to RX queue structure.
364 mlx5_rxq_cleanup(struct mlx5_rxq_ctrl *rxq_ctrl)
366 DRV_LOG(DEBUG, "port %u cleaning up Rx queue %u",
367 PORT_ID(rxq_ctrl->priv), rxq_ctrl->idx);
369 mlx5_rxq_ibv_release(rxq_ctrl->ibv);
370 memset(rxq_ctrl, 0, sizeof(*rxq_ctrl));
374 * Returns the per-queue supported offloads.
377 * Pointer to Ethernet device.
380 * Supported Rx offloads.
383 mlx5_get_rx_queue_offloads(struct rte_eth_dev *dev)
385 struct priv *priv = dev->data->dev_private;
386 struct mlx5_dev_config *config = &priv->config;
387 uint64_t offloads = (DEV_RX_OFFLOAD_SCATTER |
388 DEV_RX_OFFLOAD_TIMESTAMP |
389 DEV_RX_OFFLOAD_JUMBO_FRAME);
391 offloads |= DEV_RX_OFFLOAD_CRC_STRIP;
392 if (config->hw_fcs_strip)
393 offloads |= DEV_RX_OFFLOAD_KEEP_CRC;
396 offloads |= (DEV_RX_OFFLOAD_IPV4_CKSUM |
397 DEV_RX_OFFLOAD_UDP_CKSUM |
398 DEV_RX_OFFLOAD_TCP_CKSUM);
399 if (config->hw_vlan_strip)
400 offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
406 * Returns the per-port supported offloads.
409 * Supported Rx offloads.
412 mlx5_get_rx_port_offloads(void)
414 uint64_t offloads = DEV_RX_OFFLOAD_VLAN_FILTER;
422 * Pointer to Ethernet device structure.
426 * Number of descriptors to configure in queue.
428 * NUMA socket on which memory must be allocated.
430 * Thresholds parameters.
432 * Memory pool for buffer allocations.
435 * 0 on success, a negative errno value otherwise and rte_errno is set.
438 mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
439 unsigned int socket, const struct rte_eth_rxconf *conf,
440 struct rte_mempool *mp)
442 struct priv *priv = dev->data->dev_private;
443 struct mlx5_rxq_data *rxq = (*priv->rxqs)[idx];
444 struct mlx5_rxq_ctrl *rxq_ctrl =
445 container_of(rxq, struct mlx5_rxq_ctrl, rxq);
447 if (!rte_is_power_of_2(desc)) {
448 desc = 1 << log2above(desc);
450 "port %u increased number of descriptors in Rx queue %u"
451 " to the next power of two (%d)",
452 dev->data->port_id, idx, desc);
454 DRV_LOG(DEBUG, "port %u configuring Rx queue %u for %u descriptors",
455 dev->data->port_id, idx, desc);
456 if (idx >= priv->rxqs_n) {
457 DRV_LOG(ERR, "port %u Rx queue index out of range (%u >= %u)",
458 dev->data->port_id, idx, priv->rxqs_n);
459 rte_errno = EOVERFLOW;
462 if (!mlx5_rxq_releasable(dev, idx)) {
463 DRV_LOG(ERR, "port %u unable to release queue index %u",
464 dev->data->port_id, idx);
468 mlx5_rxq_release(dev, idx);
469 rxq_ctrl = mlx5_rxq_new(dev, idx, desc, socket, conf, mp);
471 DRV_LOG(ERR, "port %u unable to allocate queue index %u",
472 dev->data->port_id, idx);
476 DRV_LOG(DEBUG, "port %u adding Rx queue %u to list",
477 dev->data->port_id, idx);
478 (*priv->rxqs)[idx] = &rxq_ctrl->rxq;
483 * DPDK callback to release a RX queue.
486 * Generic RX queue pointer.
489 mlx5_rx_queue_release(void *dpdk_rxq)
491 struct mlx5_rxq_data *rxq = (struct mlx5_rxq_data *)dpdk_rxq;
492 struct mlx5_rxq_ctrl *rxq_ctrl;
497 rxq_ctrl = container_of(rxq, struct mlx5_rxq_ctrl, rxq);
498 priv = rxq_ctrl->priv;
499 if (!mlx5_rxq_releasable(ETH_DEV(priv), rxq_ctrl->rxq.stats.idx))
500 rte_panic("port %u Rx queue %u is still used by a flow and"
501 " cannot be removed\n",
502 PORT_ID(priv), rxq_ctrl->idx);
503 mlx5_rxq_release(ETH_DEV(priv), rxq_ctrl->rxq.stats.idx);
507 * Allocate queue vector and fill epoll fd list for Rx interrupts.
510 * Pointer to Ethernet device.
513 * 0 on success, a negative errno value otherwise and rte_errno is set.
516 mlx5_rx_intr_vec_enable(struct rte_eth_dev *dev)
518 struct priv *priv = dev->data->dev_private;
520 unsigned int rxqs_n = priv->rxqs_n;
521 unsigned int n = RTE_MIN(rxqs_n, (uint32_t)RTE_MAX_RXTX_INTR_VEC_ID);
522 unsigned int count = 0;
523 struct rte_intr_handle *intr_handle = dev->intr_handle;
525 if (!dev->data->dev_conf.intr_conf.rxq)
527 mlx5_rx_intr_vec_disable(dev);
528 intr_handle->intr_vec = malloc(n * sizeof(intr_handle->intr_vec[0]));
529 if (intr_handle->intr_vec == NULL) {
531 "port %u failed to allocate memory for interrupt"
532 " vector, Rx interrupts will not be supported",
537 intr_handle->type = RTE_INTR_HANDLE_EXT;
538 for (i = 0; i != n; ++i) {
539 /* This rxq ibv must not be released in this function. */
540 struct mlx5_rxq_ibv *rxq_ibv = mlx5_rxq_ibv_get(dev, i);
545 /* Skip queues that cannot request interrupts. */
546 if (!rxq_ibv || !rxq_ibv->channel) {
547 /* Use invalid intr_vec[] index to disable entry. */
548 intr_handle->intr_vec[i] =
549 RTE_INTR_VEC_RXTX_OFFSET +
550 RTE_MAX_RXTX_INTR_VEC_ID;
553 if (count >= RTE_MAX_RXTX_INTR_VEC_ID) {
555 "port %u too many Rx queues for interrupt"
556 " vector size (%d), Rx interrupts cannot be"
558 dev->data->port_id, RTE_MAX_RXTX_INTR_VEC_ID);
559 mlx5_rx_intr_vec_disable(dev);
563 fd = rxq_ibv->channel->fd;
564 flags = fcntl(fd, F_GETFL);
565 rc = fcntl(fd, F_SETFL, flags | O_NONBLOCK);
569 "port %u failed to make Rx interrupt file"
570 " descriptor %d non-blocking for queue index"
572 dev->data->port_id, fd, i);
573 mlx5_rx_intr_vec_disable(dev);
576 intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + count;
577 intr_handle->efds[count] = fd;
581 mlx5_rx_intr_vec_disable(dev);
583 intr_handle->nb_efd = count;
588 * Clean up Rx interrupts handler.
591 * Pointer to Ethernet device.
594 mlx5_rx_intr_vec_disable(struct rte_eth_dev *dev)
596 struct priv *priv = dev->data->dev_private;
597 struct rte_intr_handle *intr_handle = dev->intr_handle;
599 unsigned int rxqs_n = priv->rxqs_n;
600 unsigned int n = RTE_MIN(rxqs_n, (uint32_t)RTE_MAX_RXTX_INTR_VEC_ID);
602 if (!dev->data->dev_conf.intr_conf.rxq)
604 if (!intr_handle->intr_vec)
606 for (i = 0; i != n; ++i) {
607 struct mlx5_rxq_ctrl *rxq_ctrl;
608 struct mlx5_rxq_data *rxq_data;
610 if (intr_handle->intr_vec[i] == RTE_INTR_VEC_RXTX_OFFSET +
611 RTE_MAX_RXTX_INTR_VEC_ID)
614 * Need to access directly the queue to release the reference
615 * kept in priv_rx_intr_vec_enable().
617 rxq_data = (*priv->rxqs)[i];
618 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
619 mlx5_rxq_ibv_release(rxq_ctrl->ibv);
622 rte_intr_free_epoll_fd(intr_handle);
623 if (intr_handle->intr_vec)
624 free(intr_handle->intr_vec);
625 intr_handle->nb_efd = 0;
626 intr_handle->intr_vec = NULL;
630 * MLX5 CQ notification .
633 * Pointer to receive queue structure.
635 * Sequence number per receive queue .
638 mlx5_arm_cq(struct mlx5_rxq_data *rxq, int sq_n_rxq)
641 uint32_t doorbell_hi;
643 void *cq_db_reg = (char *)rxq->cq_uar + MLX5_CQ_DOORBELL;
645 sq_n = sq_n_rxq & MLX5_CQ_SQN_MASK;
646 doorbell_hi = sq_n << MLX5_CQ_SQN_OFFSET | (rxq->cq_ci & MLX5_CI_MASK);
647 doorbell = (uint64_t)doorbell_hi << 32;
648 doorbell |= rxq->cqn;
649 rxq->cq_db[MLX5_CQ_ARM_DB] = rte_cpu_to_be_32(doorbell_hi);
650 rte_write64(rte_cpu_to_be_64(doorbell), cq_db_reg);
654 * DPDK callback for Rx queue interrupt enable.
657 * Pointer to Ethernet device structure.
662 * 0 on success, a negative errno value otherwise and rte_errno is set.
665 mlx5_rx_intr_enable(struct rte_eth_dev *dev, uint16_t rx_queue_id)
667 struct priv *priv = dev->data->dev_private;
668 struct mlx5_rxq_data *rxq_data;
669 struct mlx5_rxq_ctrl *rxq_ctrl;
671 rxq_data = (*priv->rxqs)[rx_queue_id];
676 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
678 struct mlx5_rxq_ibv *rxq_ibv;
680 rxq_ibv = mlx5_rxq_ibv_get(dev, rx_queue_id);
685 mlx5_arm_cq(rxq_data, rxq_data->cq_arm_sn);
686 mlx5_rxq_ibv_release(rxq_ibv);
692 * DPDK callback for Rx queue interrupt disable.
695 * Pointer to Ethernet device structure.
700 * 0 on success, a negative errno value otherwise and rte_errno is set.
703 mlx5_rx_intr_disable(struct rte_eth_dev *dev, uint16_t rx_queue_id)
705 struct priv *priv = dev->data->dev_private;
706 struct mlx5_rxq_data *rxq_data;
707 struct mlx5_rxq_ctrl *rxq_ctrl;
708 struct mlx5_rxq_ibv *rxq_ibv = NULL;
709 struct ibv_cq *ev_cq;
713 rxq_data = (*priv->rxqs)[rx_queue_id];
718 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
721 rxq_ibv = mlx5_rxq_ibv_get(dev, rx_queue_id);
726 ret = mlx5_glue->get_cq_event(rxq_ibv->channel, &ev_cq, &ev_ctx);
727 if (ret || ev_cq != rxq_ibv->cq) {
731 rxq_data->cq_arm_sn++;
732 mlx5_glue->ack_cq_events(rxq_ibv->cq, 1);
735 ret = rte_errno; /* Save rte_errno before cleanup. */
737 mlx5_rxq_ibv_release(rxq_ibv);
738 DRV_LOG(WARNING, "port %u unable to disable interrupt on Rx queue %d",
739 dev->data->port_id, rx_queue_id);
740 rte_errno = ret; /* Restore rte_errno. */
745 * Create the Rx queue Verbs object.
748 * Pointer to Ethernet device.
750 * Queue index in DPDK Rx queue array
753 * The Verbs object initialised, NULL otherwise and rte_errno is set.
755 struct mlx5_rxq_ibv *
756 mlx5_rxq_ibv_new(struct rte_eth_dev *dev, uint16_t idx)
758 struct priv *priv = dev->data->dev_private;
759 struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
760 struct mlx5_rxq_ctrl *rxq_ctrl =
761 container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
762 struct ibv_wq_attr mod;
765 struct ibv_cq_init_attr_ex ibv;
766 struct mlx5dv_cq_init_attr mlx5;
769 struct ibv_wq_init_attr ibv;
770 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
771 struct mlx5dv_wq_init_attr mlx5;
774 struct ibv_cq_ex cq_attr;
777 unsigned int wqe_n = 1 << rxq_data->elts_n;
778 struct mlx5_rxq_ibv *tmpl;
779 struct mlx5dv_cq cq_info;
780 struct mlx5dv_rwq rwq;
783 struct mlx5dv_obj obj;
784 struct mlx5_dev_config *config = &priv->config;
785 const int mprq_en = mlx5_rxq_mprq_enabled(rxq_data);
788 assert(!rxq_ctrl->ibv);
789 priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_RX_QUEUE;
790 priv->verbs_alloc_ctx.obj = rxq_ctrl;
791 tmpl = rte_calloc_socket(__func__, 1, sizeof(*tmpl), 0,
795 "port %u Rx queue %u cannot allocate verbs resources",
796 dev->data->port_id, rxq_ctrl->idx);
800 tmpl->rxq_ctrl = rxq_ctrl;
802 tmpl->channel = mlx5_glue->create_comp_channel(priv->ctx);
803 if (!tmpl->channel) {
804 DRV_LOG(ERR, "port %u: comp channel creation failure",
811 cqe_n = wqe_n * (1 << rxq_data->strd_num_n) - 1;
814 attr.cq.ibv = (struct ibv_cq_init_attr_ex){
816 .channel = tmpl->channel,
819 attr.cq.mlx5 = (struct mlx5dv_cq_init_attr){
822 if (config->cqe_comp && !rxq_data->hw_timestamp) {
823 attr.cq.mlx5.comp_mask |=
824 MLX5DV_CQ_INIT_ATTR_MASK_COMPRESSED_CQE;
825 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
826 attr.cq.mlx5.cqe_comp_res_format =
827 mprq_en ? MLX5DV_CQE_RES_FORMAT_CSUM_STRIDX :
828 MLX5DV_CQE_RES_FORMAT_HASH;
830 attr.cq.mlx5.cqe_comp_res_format = MLX5DV_CQE_RES_FORMAT_HASH;
833 * For vectorized Rx, it must not be doubled in order to
834 * make cq_ci and rq_ci aligned.
836 if (mlx5_rxq_check_vec_support(rxq_data) < 0)
837 attr.cq.ibv.cqe *= 2;
838 } else if (config->cqe_comp && rxq_data->hw_timestamp) {
840 "port %u Rx CQE compression is disabled for HW"
844 tmpl->cq = mlx5_glue->cq_ex_to_cq
845 (mlx5_glue->dv_create_cq(priv->ctx, &attr.cq.ibv,
847 if (tmpl->cq == NULL) {
848 DRV_LOG(ERR, "port %u Rx queue %u CQ creation failure",
849 dev->data->port_id, idx);
853 DRV_LOG(DEBUG, "port %u priv->device_attr.max_qp_wr is %d",
854 dev->data->port_id, priv->device_attr.orig_attr.max_qp_wr);
855 DRV_LOG(DEBUG, "port %u priv->device_attr.max_sge is %d",
856 dev->data->port_id, priv->device_attr.orig_attr.max_sge);
857 attr.wq.ibv = (struct ibv_wq_init_attr){
858 .wq_context = NULL, /* Could be useful in the future. */
859 .wq_type = IBV_WQT_RQ,
860 /* Max number of outstanding WRs. */
861 .max_wr = wqe_n >> rxq_data->sges_n,
862 /* Max number of scatter/gather elements in a WR. */
863 .max_sge = 1 << rxq_data->sges_n,
867 IBV_WQ_FLAGS_CVLAN_STRIPPING |
869 .create_flags = (rxq_data->vlan_strip ?
870 IBV_WQ_FLAGS_CVLAN_STRIPPING :
873 /* By default, FCS (CRC) is stripped by hardware. */
874 if (rxq_data->crc_present) {
875 attr.wq.ibv.create_flags |= IBV_WQ_FLAGS_SCATTER_FCS;
876 attr.wq.ibv.comp_mask |= IBV_WQ_INIT_ATTR_FLAGS;
878 #ifdef HAVE_IBV_WQ_FLAG_RX_END_PADDING
879 if (config->hw_padding) {
880 attr.wq.ibv.create_flags |= IBV_WQ_FLAG_RX_END_PADDING;
881 attr.wq.ibv.comp_mask |= IBV_WQ_INIT_ATTR_FLAGS;
884 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
885 attr.wq.mlx5 = (struct mlx5dv_wq_init_attr){
889 struct mlx5dv_striding_rq_init_attr *mprq_attr =
890 &attr.wq.mlx5.striding_rq_attrs;
892 attr.wq.mlx5.comp_mask |= MLX5DV_WQ_INIT_ATTR_MASK_STRIDING_RQ;
893 *mprq_attr = (struct mlx5dv_striding_rq_init_attr){
894 .single_stride_log_num_of_bytes = rxq_data->strd_sz_n,
895 .single_wqe_log_num_of_strides = rxq_data->strd_num_n,
896 .two_byte_shift_en = MLX5_MPRQ_TWO_BYTE_SHIFT,
899 tmpl->wq = mlx5_glue->dv_create_wq(priv->ctx, &attr.wq.ibv,
902 tmpl->wq = mlx5_glue->create_wq(priv->ctx, &attr.wq.ibv);
904 if (tmpl->wq == NULL) {
905 DRV_LOG(ERR, "port %u Rx queue %u WQ creation failure",
906 dev->data->port_id, idx);
911 * Make sure number of WRs*SGEs match expectations since a queue
912 * cannot allocate more than "desc" buffers.
914 if (attr.wq.ibv.max_wr != (wqe_n >> rxq_data->sges_n) ||
915 attr.wq.ibv.max_sge != (1u << rxq_data->sges_n)) {
917 "port %u Rx queue %u requested %u*%u but got %u*%u"
919 dev->data->port_id, idx,
920 wqe_n >> rxq_data->sges_n, (1 << rxq_data->sges_n),
921 attr.wq.ibv.max_wr, attr.wq.ibv.max_sge);
925 /* Change queue state to ready. */
926 mod = (struct ibv_wq_attr){
927 .attr_mask = IBV_WQ_ATTR_STATE,
928 .wq_state = IBV_WQS_RDY,
930 ret = mlx5_glue->modify_wq(tmpl->wq, &mod);
933 "port %u Rx queue %u WQ state to IBV_WQS_RDY failed",
934 dev->data->port_id, idx);
938 obj.cq.in = tmpl->cq;
939 obj.cq.out = &cq_info;
940 obj.rwq.in = tmpl->wq;
942 ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_CQ | MLX5DV_OBJ_RWQ);
947 if (cq_info.cqe_size != RTE_CACHE_LINE_SIZE) {
949 "port %u wrong MLX5_CQE_SIZE environment variable"
950 " value: it should be set to %u",
951 dev->data->port_id, RTE_CACHE_LINE_SIZE);
955 /* Fill the rings. */
956 rxq_data->wqes = rwq.buf;
957 for (i = 0; (i != wqe_n); ++i) {
958 volatile struct mlx5_wqe_data_seg *scat;
963 struct mlx5_mprq_buf *buf = (*rxq_data->mprq_bufs)[i];
965 scat = &((volatile struct mlx5_wqe_mprq *)
966 rxq_data->wqes)[i].dseg;
967 addr = (uintptr_t)mlx5_mprq_buf_addr(buf);
968 byte_count = (1 << rxq_data->strd_sz_n) *
969 (1 << rxq_data->strd_num_n);
971 struct rte_mbuf *buf = (*rxq_data->elts)[i];
973 scat = &((volatile struct mlx5_wqe_data_seg *)
975 addr = rte_pktmbuf_mtod(buf, uintptr_t);
976 byte_count = DATA_LEN(buf);
978 /* scat->addr must be able to store a pointer. */
979 assert(sizeof(scat->addr) >= sizeof(uintptr_t));
980 *scat = (struct mlx5_wqe_data_seg){
981 .addr = rte_cpu_to_be_64(addr),
982 .byte_count = rte_cpu_to_be_32(byte_count),
983 .lkey = mlx5_rx_addr2mr(rxq_data, addr),
986 rxq_data->rq_db = rwq.dbrec;
987 rxq_data->cqe_n = log2above(cq_info.cqe_cnt);
989 rxq_data->consumed_strd = 0;
991 rxq_data->zip = (struct rxq_zip){
994 rxq_data->cq_db = cq_info.dbrec;
995 rxq_data->cqes = (volatile struct mlx5_cqe (*)[])(uintptr_t)cq_info.buf;
996 rxq_data->cq_uar = cq_info.cq_uar;
997 rxq_data->cqn = cq_info.cqn;
998 rxq_data->cq_arm_sn = 0;
999 /* Update doorbell counter. */
1000 rxq_data->rq_ci = wqe_n >> rxq_data->sges_n;
1002 *rxq_data->rq_db = rte_cpu_to_be_32(rxq_data->rq_ci);
1003 DRV_LOG(DEBUG, "port %u rxq %u updated with %p", dev->data->port_id,
1004 idx, (void *)&tmpl);
1005 rte_atomic32_inc(&tmpl->refcnt);
1006 LIST_INSERT_HEAD(&priv->rxqsibv, tmpl, next);
1007 priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_NONE;
1010 ret = rte_errno; /* Save rte_errno before cleanup. */
1012 claim_zero(mlx5_glue->destroy_wq(tmpl->wq));
1014 claim_zero(mlx5_glue->destroy_cq(tmpl->cq));
1016 claim_zero(mlx5_glue->destroy_comp_channel(tmpl->channel));
1017 priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_NONE;
1018 rte_errno = ret; /* Restore rte_errno. */
1023 * Get an Rx queue Verbs object.
1026 * Pointer to Ethernet device.
1028 * Queue index in DPDK Rx queue array
1031 * The Verbs object if it exists.
1033 struct mlx5_rxq_ibv *
1034 mlx5_rxq_ibv_get(struct rte_eth_dev *dev, uint16_t idx)
1036 struct priv *priv = dev->data->dev_private;
1037 struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
1038 struct mlx5_rxq_ctrl *rxq_ctrl;
1040 if (idx >= priv->rxqs_n)
1044 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
1045 if (rxq_ctrl->ibv) {
1046 rte_atomic32_inc(&rxq_ctrl->ibv->refcnt);
1048 return rxq_ctrl->ibv;
1052 * Release an Rx verbs queue object.
1055 * Verbs Rx queue object.
1058 * 1 while a reference on it exists, 0 when freed.
1061 mlx5_rxq_ibv_release(struct mlx5_rxq_ibv *rxq_ibv)
1064 assert(rxq_ibv->wq);
1065 assert(rxq_ibv->cq);
1066 if (rte_atomic32_dec_and_test(&rxq_ibv->refcnt)) {
1067 rxq_free_elts(rxq_ibv->rxq_ctrl);
1068 claim_zero(mlx5_glue->destroy_wq(rxq_ibv->wq));
1069 claim_zero(mlx5_glue->destroy_cq(rxq_ibv->cq));
1070 if (rxq_ibv->channel)
1071 claim_zero(mlx5_glue->destroy_comp_channel
1072 (rxq_ibv->channel));
1073 LIST_REMOVE(rxq_ibv, next);
1081 * Verify the Verbs Rx queue list is empty
1084 * Pointer to Ethernet device.
1087 * The number of object not released.
1090 mlx5_rxq_ibv_verify(struct rte_eth_dev *dev)
1092 struct priv *priv = dev->data->dev_private;
1094 struct mlx5_rxq_ibv *rxq_ibv;
1096 LIST_FOREACH(rxq_ibv, &priv->rxqsibv, next) {
1097 DRV_LOG(DEBUG, "port %u Verbs Rx queue %u still referenced",
1098 dev->data->port_id, rxq_ibv->rxq_ctrl->idx);
1105 * Return true if a single reference exists on the object.
1108 * Verbs Rx queue object.
1111 mlx5_rxq_ibv_releasable(struct mlx5_rxq_ibv *rxq_ibv)
1114 return (rte_atomic32_read(&rxq_ibv->refcnt) == 1);
1118 * Callback function to initialize mbufs for Multi-Packet RQ.
1121 mlx5_mprq_buf_init(struct rte_mempool *mp, void *opaque_arg __rte_unused,
1122 void *_m, unsigned int i __rte_unused)
1124 struct mlx5_mprq_buf *buf = _m;
1126 memset(_m, 0, sizeof(*buf));
1128 rte_atomic16_set(&buf->refcnt, 1);
1132 * Free mempool of Multi-Packet RQ.
1135 * Pointer to Ethernet device.
1138 * 0 on success, negative errno value on failure.
1141 mlx5_mprq_free_mp(struct rte_eth_dev *dev)
1143 struct priv *priv = dev->data->dev_private;
1144 struct rte_mempool *mp = priv->mprq_mp;
1149 DRV_LOG(DEBUG, "port %u freeing mempool (%s) for Multi-Packet RQ",
1150 dev->data->port_id, mp->name);
1152 * If a buffer in the pool has been externally attached to a mbuf and it
1153 * is still in use by application, destroying the Rx qeueue can spoil
1154 * the packet. It is unlikely to happen but if application dynamically
1155 * creates and destroys with holding Rx packets, this can happen.
1157 * TODO: It is unavoidable for now because the mempool for Multi-Packet
1158 * RQ isn't provided by application but managed by PMD.
1160 if (!rte_mempool_full(mp)) {
1162 "port %u mempool for Multi-Packet RQ is still in use",
1163 dev->data->port_id);
1167 rte_mempool_free(mp);
1168 /* Unset mempool for each Rx queue. */
1169 for (i = 0; i != priv->rxqs_n; ++i) {
1170 struct mlx5_rxq_data *rxq = (*priv->rxqs)[i];
1174 rxq->mprq_mp = NULL;
1180 * Allocate a mempool for Multi-Packet RQ. All configured Rx queues share the
1181 * mempool. If already allocated, reuse it if there're enough elements.
1182 * Otherwise, resize it.
1185 * Pointer to Ethernet device.
1188 * 0 on success, negative errno value on failure.
1191 mlx5_mprq_alloc_mp(struct rte_eth_dev *dev)
1193 struct priv *priv = dev->data->dev_private;
1194 struct rte_mempool *mp = priv->mprq_mp;
1195 char name[RTE_MEMPOOL_NAMESIZE];
1196 unsigned int desc = 0;
1197 unsigned int buf_len;
1198 unsigned int obj_num;
1199 unsigned int obj_size;
1200 unsigned int strd_num_n = 0;
1201 unsigned int strd_sz_n = 0;
1204 if (!mlx5_mprq_enabled(dev))
1206 /* Count the total number of descriptors configured. */
1207 for (i = 0; i != priv->rxqs_n; ++i) {
1208 struct mlx5_rxq_data *rxq = (*priv->rxqs)[i];
1212 desc += 1 << rxq->elts_n;
1213 /* Get the max number of strides. */
1214 if (strd_num_n < rxq->strd_num_n)
1215 strd_num_n = rxq->strd_num_n;
1216 /* Get the max size of a stride. */
1217 if (strd_sz_n < rxq->strd_sz_n)
1218 strd_sz_n = rxq->strd_sz_n;
1220 assert(strd_num_n && strd_sz_n);
1221 buf_len = (1 << strd_num_n) * (1 << strd_sz_n);
1222 obj_size = buf_len + sizeof(struct mlx5_mprq_buf);
1224 * Received packets can be either memcpy'd or externally referenced. In
1225 * case that the packet is attached to an mbuf as an external buffer, as
1226 * it isn't possible to predict how the buffers will be queued by
1227 * application, there's no option to exactly pre-allocate needed buffers
1228 * in advance but to speculatively prepares enough buffers.
1230 * In the data path, if this Mempool is depleted, PMD will try to memcpy
1231 * received packets to buffers provided by application (rxq->mp) until
1232 * this Mempool gets available again.
1235 obj_num = desc + MLX5_MPRQ_MP_CACHE_SZ * priv->rxqs_n;
1236 /* Check a mempool is already allocated and if it can be resued. */
1237 if (mp != NULL && mp->elt_size >= obj_size && mp->size >= obj_num) {
1238 DRV_LOG(DEBUG, "port %u mempool %s is being reused",
1239 dev->data->port_id, mp->name);
1242 } else if (mp != NULL) {
1243 DRV_LOG(DEBUG, "port %u mempool %s should be resized, freeing it",
1244 dev->data->port_id, mp->name);
1246 * If failed to free, which means it may be still in use, no way
1247 * but to keep using the existing one. On buffer underrun,
1248 * packets will be memcpy'd instead of external buffer
1251 if (mlx5_mprq_free_mp(dev)) {
1252 if (mp->elt_size >= obj_size)
1258 snprintf(name, sizeof(name), "%s-mprq", dev->device->name);
1259 mp = rte_mempool_create(name, obj_num, obj_size, MLX5_MPRQ_MP_CACHE_SZ,
1260 0, NULL, NULL, mlx5_mprq_buf_init, NULL,
1261 dev->device->numa_node, 0);
1264 "port %u failed to allocate a mempool for"
1265 " Multi-Packet RQ, count=%u, size=%u",
1266 dev->data->port_id, obj_num, obj_size);
1272 /* Set mempool for each Rx queue. */
1273 for (i = 0; i != priv->rxqs_n; ++i) {
1274 struct mlx5_rxq_data *rxq = (*priv->rxqs)[i];
1280 DRV_LOG(INFO, "port %u Multi-Packet RQ is configured",
1281 dev->data->port_id);
1286 * Create a DPDK Rx queue.
1289 * Pointer to Ethernet device.
1293 * Number of descriptors to configure in queue.
1295 * NUMA socket on which memory must be allocated.
1298 * A DPDK queue object on success, NULL otherwise and rte_errno is set.
1300 struct mlx5_rxq_ctrl *
1301 mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
1302 unsigned int socket, const struct rte_eth_rxconf *conf,
1303 struct rte_mempool *mp)
1305 struct priv *priv = dev->data->dev_private;
1306 struct mlx5_rxq_ctrl *tmpl;
1307 unsigned int mb_len = rte_pktmbuf_data_room_size(mp);
1308 unsigned int mprq_stride_size;
1309 struct mlx5_dev_config *config = &priv->config;
1311 * Always allocate extra slots, even if eventually
1312 * the vector Rx will not be used.
1315 desc + config->rx_vec_en * MLX5_VPMD_DESCS_PER_LOOP;
1316 uint64_t offloads = conf->offloads |
1317 dev->data->dev_conf.rxmode.offloads;
1318 const int mprq_en = mlx5_check_mprq_support(dev) > 0;
1320 tmpl = rte_calloc_socket("RXQ", 1,
1322 desc_n * sizeof(struct rte_mbuf *),
1328 if (mlx5_mr_btree_init(&tmpl->rxq.mr_ctrl.cache_bh,
1329 MLX5_MR_BTREE_CACHE_N, socket)) {
1330 /* rte_errno is already set. */
1333 tmpl->socket = socket;
1334 if (dev->data->dev_conf.intr_conf.rxq)
1337 * This Rx queue can be configured as a Multi-Packet RQ if all of the
1338 * following conditions are met:
1339 * - MPRQ is enabled.
1340 * - The number of descs is more than the number of strides.
1341 * - max_rx_pkt_len plus overhead is less than the max size of a
1343 * Otherwise, enable Rx scatter if necessary.
1345 assert(mb_len >= RTE_PKTMBUF_HEADROOM);
1347 dev->data->dev_conf.rxmode.max_rx_pkt_len +
1348 sizeof(struct rte_mbuf_ext_shared_info) +
1349 RTE_PKTMBUF_HEADROOM;
1351 desc >= (1U << config->mprq.stride_num_n) &&
1352 mprq_stride_size <= (1U << config->mprq.max_stride_size_n)) {
1353 /* TODO: Rx scatter isn't supported yet. */
1354 tmpl->rxq.sges_n = 0;
1355 /* Trim the number of descs needed. */
1356 desc >>= config->mprq.stride_num_n;
1357 tmpl->rxq.strd_num_n = config->mprq.stride_num_n;
1358 tmpl->rxq.strd_sz_n = RTE_MAX(log2above(mprq_stride_size),
1359 config->mprq.min_stride_size_n);
1360 tmpl->rxq.strd_shift_en = MLX5_MPRQ_TWO_BYTE_SHIFT;
1361 tmpl->rxq.mprq_max_memcpy_len =
1362 RTE_MIN(mb_len - RTE_PKTMBUF_HEADROOM,
1363 config->mprq.max_memcpy_len);
1365 "port %u Rx queue %u: Multi-Packet RQ is enabled"
1366 " strd_num_n = %u, strd_sz_n = %u",
1367 dev->data->port_id, idx,
1368 tmpl->rxq.strd_num_n, tmpl->rxq.strd_sz_n);
1369 } else if (dev->data->dev_conf.rxmode.max_rx_pkt_len <=
1370 (mb_len - RTE_PKTMBUF_HEADROOM)) {
1371 tmpl->rxq.sges_n = 0;
1372 } else if (offloads & DEV_RX_OFFLOAD_SCATTER) {
1374 RTE_PKTMBUF_HEADROOM +
1375 dev->data->dev_conf.rxmode.max_rx_pkt_len;
1376 unsigned int sges_n;
1379 * Determine the number of SGEs needed for a full packet
1380 * and round it to the next power of two.
1382 sges_n = log2above((size / mb_len) + !!(size % mb_len));
1383 tmpl->rxq.sges_n = sges_n;
1384 /* Make sure rxq.sges_n did not overflow. */
1385 size = mb_len * (1 << tmpl->rxq.sges_n);
1386 size -= RTE_PKTMBUF_HEADROOM;
1387 if (size < dev->data->dev_conf.rxmode.max_rx_pkt_len) {
1389 "port %u too many SGEs (%u) needed to handle"
1390 " requested maximum packet size %u",
1393 dev->data->dev_conf.rxmode.max_rx_pkt_len);
1394 rte_errno = EOVERFLOW;
1399 "port %u the requested maximum Rx packet size (%u) is"
1400 " larger than a single mbuf (%u) and scattered mode has"
1401 " not been requested",
1403 dev->data->dev_conf.rxmode.max_rx_pkt_len,
1404 mb_len - RTE_PKTMBUF_HEADROOM);
1406 DRV_LOG(DEBUG, "port %u maximum number of segments per packet: %u",
1407 dev->data->port_id, 1 << tmpl->rxq.sges_n);
1408 if (desc % (1 << tmpl->rxq.sges_n)) {
1410 "port %u number of Rx queue descriptors (%u) is not a"
1411 " multiple of SGEs per packet (%u)",
1414 1 << tmpl->rxq.sges_n);
1418 /* Toggle RX checksum offload if hardware supports it. */
1419 tmpl->rxq.csum = !!(offloads & DEV_RX_OFFLOAD_CHECKSUM);
1420 tmpl->rxq.hw_timestamp = !!(offloads & DEV_RX_OFFLOAD_TIMESTAMP);
1421 /* Configure VLAN stripping. */
1422 tmpl->rxq.vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
1423 /* By default, FCS (CRC) is stripped by hardware. */
1424 tmpl->rxq.crc_present = 0;
1425 if (rte_eth_dev_must_keep_crc(offloads)) {
1426 if (config->hw_fcs_strip) {
1427 tmpl->rxq.crc_present = 1;
1430 "port %u CRC stripping has been disabled but will"
1431 " still be performed by hardware, make sure MLNX_OFED"
1432 " and firmware are up to date",
1433 dev->data->port_id);
1437 "port %u CRC stripping is %s, %u bytes will be subtracted from"
1438 " incoming frames to hide it",
1440 tmpl->rxq.crc_present ? "disabled" : "enabled",
1441 tmpl->rxq.crc_present << 2);
1443 tmpl->rxq.rss_hash = !!priv->rss_conf.rss_hf &&
1444 (!!(dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS));
1445 tmpl->rxq.port_id = dev->data->port_id;
1448 tmpl->rxq.stats.idx = idx;
1449 tmpl->rxq.elts_n = log2above(desc);
1451 (struct rte_mbuf *(*)[1 << tmpl->rxq.elts_n])(tmpl + 1);
1453 rte_atomic32_inc(&tmpl->refcnt);
1454 LIST_INSERT_HEAD(&priv->rxqsctrl, tmpl, next);
1465 * Pointer to Ethernet device.
1470 * A pointer to the queue if it exists, NULL otherwise.
1472 struct mlx5_rxq_ctrl *
1473 mlx5_rxq_get(struct rte_eth_dev *dev, uint16_t idx)
1475 struct priv *priv = dev->data->dev_private;
1476 struct mlx5_rxq_ctrl *rxq_ctrl = NULL;
1478 if ((*priv->rxqs)[idx]) {
1479 rxq_ctrl = container_of((*priv->rxqs)[idx],
1480 struct mlx5_rxq_ctrl,
1482 mlx5_rxq_ibv_get(dev, idx);
1483 rte_atomic32_inc(&rxq_ctrl->refcnt);
1489 * Release a Rx queue.
1492 * Pointer to Ethernet device.
1497 * 1 while a reference on it exists, 0 when freed.
1500 mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
1502 struct priv *priv = dev->data->dev_private;
1503 struct mlx5_rxq_ctrl *rxq_ctrl;
1505 if (!(*priv->rxqs)[idx])
1507 rxq_ctrl = container_of((*priv->rxqs)[idx], struct mlx5_rxq_ctrl, rxq);
1508 assert(rxq_ctrl->priv);
1509 if (rxq_ctrl->ibv && !mlx5_rxq_ibv_release(rxq_ctrl->ibv))
1510 rxq_ctrl->ibv = NULL;
1511 if (rte_atomic32_dec_and_test(&rxq_ctrl->refcnt)) {
1512 mlx5_mr_btree_free(&rxq_ctrl->rxq.mr_ctrl.cache_bh);
1513 LIST_REMOVE(rxq_ctrl, next);
1515 (*priv->rxqs)[idx] = NULL;
1522 * Verify if the queue can be released.
1525 * Pointer to Ethernet device.
1530 * 1 if the queue can be released, negative errno otherwise and rte_errno is
1534 mlx5_rxq_releasable(struct rte_eth_dev *dev, uint16_t idx)
1536 struct priv *priv = dev->data->dev_private;
1537 struct mlx5_rxq_ctrl *rxq_ctrl;
1539 if (!(*priv->rxqs)[idx]) {
1543 rxq_ctrl = container_of((*priv->rxqs)[idx], struct mlx5_rxq_ctrl, rxq);
1544 return (rte_atomic32_read(&rxq_ctrl->refcnt) == 1);
1548 * Verify the Rx Queue list is empty
1551 * Pointer to Ethernet device.
1554 * The number of object not released.
1557 mlx5_rxq_verify(struct rte_eth_dev *dev)
1559 struct priv *priv = dev->data->dev_private;
1560 struct mlx5_rxq_ctrl *rxq_ctrl;
1563 LIST_FOREACH(rxq_ctrl, &priv->rxqsctrl, next) {
1564 DRV_LOG(DEBUG, "port %u Rx Queue %u still referenced",
1565 dev->data->port_id, rxq_ctrl->idx);
1572 * Create an indirection table.
1575 * Pointer to Ethernet device.
1577 * Queues entering in the indirection table.
1579 * Number of queues in the array.
1582 * The Verbs object initialised, NULL otherwise and rte_errno is set.
1584 struct mlx5_ind_table_ibv *
1585 mlx5_ind_table_ibv_new(struct rte_eth_dev *dev, const uint16_t *queues,
1588 struct priv *priv = dev->data->dev_private;
1589 struct mlx5_ind_table_ibv *ind_tbl;
1590 const unsigned int wq_n = rte_is_power_of_2(queues_n) ?
1591 log2above(queues_n) :
1592 log2above(priv->config.ind_table_max_size);
1593 struct ibv_wq *wq[1 << wq_n];
1597 ind_tbl = rte_calloc(__func__, 1, sizeof(*ind_tbl) +
1598 queues_n * sizeof(uint16_t), 0);
1603 for (i = 0; i != queues_n; ++i) {
1604 struct mlx5_rxq_ctrl *rxq = mlx5_rxq_get(dev, queues[i]);
1608 wq[i] = rxq->ibv->wq;
1609 ind_tbl->queues[i] = queues[i];
1611 ind_tbl->queues_n = queues_n;
1612 /* Finalise indirection table. */
1613 for (j = 0; i != (unsigned int)(1 << wq_n); ++i, ++j)
1615 ind_tbl->ind_table = mlx5_glue->create_rwq_ind_table
1617 &(struct ibv_rwq_ind_table_init_attr){
1618 .log_ind_tbl_size = wq_n,
1622 if (!ind_tbl->ind_table) {
1626 rte_atomic32_inc(&ind_tbl->refcnt);
1627 LIST_INSERT_HEAD(&priv->ind_tbls, ind_tbl, next);
1631 DEBUG("port %u cannot create indirection table", dev->data->port_id);
1636 * Get an indirection table.
1639 * Pointer to Ethernet device.
1641 * Queues entering in the indirection table.
1643 * Number of queues in the array.
1646 * An indirection table if found.
1648 struct mlx5_ind_table_ibv *
1649 mlx5_ind_table_ibv_get(struct rte_eth_dev *dev, const uint16_t *queues,
1652 struct priv *priv = dev->data->dev_private;
1653 struct mlx5_ind_table_ibv *ind_tbl;
1655 LIST_FOREACH(ind_tbl, &priv->ind_tbls, next) {
1656 if ((ind_tbl->queues_n == queues_n) &&
1657 (memcmp(ind_tbl->queues, queues,
1658 ind_tbl->queues_n * sizeof(ind_tbl->queues[0]))
1665 rte_atomic32_inc(&ind_tbl->refcnt);
1666 for (i = 0; i != ind_tbl->queues_n; ++i)
1667 mlx5_rxq_get(dev, ind_tbl->queues[i]);
1673 * Release an indirection table.
1676 * Pointer to Ethernet device.
1678 * Indirection table to release.
1681 * 1 while a reference on it exists, 0 when freed.
1684 mlx5_ind_table_ibv_release(struct rte_eth_dev *dev,
1685 struct mlx5_ind_table_ibv *ind_tbl)
1689 if (rte_atomic32_dec_and_test(&ind_tbl->refcnt))
1690 claim_zero(mlx5_glue->destroy_rwq_ind_table
1691 (ind_tbl->ind_table));
1692 for (i = 0; i != ind_tbl->queues_n; ++i)
1693 claim_nonzero(mlx5_rxq_release(dev, ind_tbl->queues[i]));
1694 if (!rte_atomic32_read(&ind_tbl->refcnt)) {
1695 LIST_REMOVE(ind_tbl, next);
1703 * Verify the Rx Queue list is empty
1706 * Pointer to Ethernet device.
1709 * The number of object not released.
1712 mlx5_ind_table_ibv_verify(struct rte_eth_dev *dev)
1714 struct priv *priv = dev->data->dev_private;
1715 struct mlx5_ind_table_ibv *ind_tbl;
1718 LIST_FOREACH(ind_tbl, &priv->ind_tbls, next) {
1720 "port %u Verbs indirection table %p still referenced",
1721 dev->data->port_id, (void *)ind_tbl);
1728 * Create an Rx Hash queue.
1731 * Pointer to Ethernet device.
1733 * RSS key for the Rx hash queue.
1734 * @param rss_key_len
1736 * @param hash_fields
1737 * Verbs protocol hash field to make the RSS on.
1739 * Queues entering in hash queue. In case of empty hash_fields only the
1740 * first queue index will be taken for the indirection table.
1745 * The Verbs object initialised, NULL otherwise and rte_errno is set.
1748 mlx5_hrxq_new(struct rte_eth_dev *dev,
1749 const uint8_t *rss_key, uint32_t rss_key_len,
1750 uint64_t hash_fields,
1751 const uint16_t *queues, uint32_t queues_n)
1753 struct priv *priv = dev->data->dev_private;
1754 struct mlx5_hrxq *hrxq;
1755 struct mlx5_ind_table_ibv *ind_tbl;
1759 queues_n = hash_fields ? queues_n : 1;
1760 ind_tbl = mlx5_ind_table_ibv_get(dev, queues, queues_n);
1762 ind_tbl = mlx5_ind_table_ibv_new(dev, queues, queues_n);
1768 rss_key_len = MLX5_RSS_HASH_KEY_LEN;
1769 rss_key = rss_hash_default_key;
1771 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1772 qp = mlx5_glue->dv_create_qp
1774 &(struct ibv_qp_init_attr_ex){
1775 .qp_type = IBV_QPT_RAW_PACKET,
1777 IBV_QP_INIT_ATTR_PD |
1778 IBV_QP_INIT_ATTR_IND_TABLE |
1779 IBV_QP_INIT_ATTR_RX_HASH,
1780 .rx_hash_conf = (struct ibv_rx_hash_conf){
1781 .rx_hash_function = IBV_RX_HASH_FUNC_TOEPLITZ,
1782 .rx_hash_key_len = rss_key_len ? rss_key_len :
1783 MLX5_RSS_HASH_KEY_LEN,
1784 .rx_hash_key = rss_key ?
1785 (void *)(uintptr_t)rss_key :
1786 rss_hash_default_key,
1787 .rx_hash_fields_mask = hash_fields,
1789 .rwq_ind_tbl = ind_tbl->ind_table,
1792 &(struct mlx5dv_qp_init_attr){
1793 .comp_mask = (hash_fields & IBV_RX_HASH_INNER) ?
1794 MLX5DV_QP_INIT_ATTR_MASK_QP_CREATE_FLAGS :
1796 .create_flags = MLX5DV_QP_CREATE_TUNNEL_OFFLOADS,
1799 qp = mlx5_glue->create_qp_ex
1801 &(struct ibv_qp_init_attr_ex){
1802 .qp_type = IBV_QPT_RAW_PACKET,
1804 IBV_QP_INIT_ATTR_PD |
1805 IBV_QP_INIT_ATTR_IND_TABLE |
1806 IBV_QP_INIT_ATTR_RX_HASH,
1807 .rx_hash_conf = (struct ibv_rx_hash_conf){
1808 .rx_hash_function = IBV_RX_HASH_FUNC_TOEPLITZ,
1809 .rx_hash_key_len = rss_key_len ? rss_key_len :
1810 MLX5_RSS_HASH_KEY_LEN,
1811 .rx_hash_key = rss_key ?
1812 (void *)(uintptr_t)rss_key :
1813 rss_hash_default_key,
1814 .rx_hash_fields_mask = hash_fields,
1816 .rwq_ind_tbl = ind_tbl->ind_table,
1824 hrxq = rte_calloc(__func__, 1, sizeof(*hrxq) + rss_key_len, 0);
1827 hrxq->ind_table = ind_tbl;
1829 hrxq->rss_key_len = rss_key_len;
1830 hrxq->hash_fields = hash_fields;
1831 memcpy(hrxq->rss_key, rss_key, rss_key_len);
1832 rte_atomic32_inc(&hrxq->refcnt);
1833 LIST_INSERT_HEAD(&priv->hrxqs, hrxq, next);
1836 err = rte_errno; /* Save rte_errno before cleanup. */
1837 mlx5_ind_table_ibv_release(dev, ind_tbl);
1839 claim_zero(mlx5_glue->destroy_qp(qp));
1840 rte_errno = err; /* Restore rte_errno. */
1845 * Get an Rx Hash queue.
1848 * Pointer to Ethernet device.
1850 * RSS configuration for the Rx hash queue.
1852 * Queues entering in hash queue. In case of empty hash_fields only the
1853 * first queue index will be taken for the indirection table.
1858 * An hash Rx queue on success.
1861 mlx5_hrxq_get(struct rte_eth_dev *dev,
1862 const uint8_t *rss_key, uint32_t rss_key_len,
1863 uint64_t hash_fields,
1864 const uint16_t *queues, uint32_t queues_n)
1866 struct priv *priv = dev->data->dev_private;
1867 struct mlx5_hrxq *hrxq;
1869 queues_n = hash_fields ? queues_n : 1;
1870 LIST_FOREACH(hrxq, &priv->hrxqs, next) {
1871 struct mlx5_ind_table_ibv *ind_tbl;
1873 if (hrxq->rss_key_len != rss_key_len)
1875 if (memcmp(hrxq->rss_key, rss_key, rss_key_len))
1877 if (hrxq->hash_fields != hash_fields)
1879 ind_tbl = mlx5_ind_table_ibv_get(dev, queues, queues_n);
1882 if (ind_tbl != hrxq->ind_table) {
1883 mlx5_ind_table_ibv_release(dev, ind_tbl);
1886 rte_atomic32_inc(&hrxq->refcnt);
1893 * Release the hash Rx queue.
1896 * Pointer to Ethernet device.
1898 * Pointer to Hash Rx queue to release.
1901 * 1 while a reference on it exists, 0 when freed.
1904 mlx5_hrxq_release(struct rte_eth_dev *dev, struct mlx5_hrxq *hrxq)
1906 if (rte_atomic32_dec_and_test(&hrxq->refcnt)) {
1907 claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
1908 mlx5_ind_table_ibv_release(dev, hrxq->ind_table);
1909 LIST_REMOVE(hrxq, next);
1913 claim_nonzero(mlx5_ind_table_ibv_release(dev, hrxq->ind_table));
1918 * Verify the Rx Queue list is empty
1921 * Pointer to Ethernet device.
1924 * The number of object not released.
1927 mlx5_hrxq_ibv_verify(struct rte_eth_dev *dev)
1929 struct priv *priv = dev->data->dev_private;
1930 struct mlx5_hrxq *hrxq;
1933 LIST_FOREACH(hrxq, &priv->hrxqs, next) {
1935 "port %u Verbs hash Rx queue %p still referenced",
1936 dev->data->port_id, (void *)hrxq);
1943 * Create a drop Rx queue Verbs object.
1946 * Pointer to Ethernet device.
1949 * The Verbs object initialised, NULL otherwise and rte_errno is set.
1951 struct mlx5_rxq_ibv *
1952 mlx5_rxq_ibv_drop_new(struct rte_eth_dev *dev)
1954 struct priv *priv = dev->data->dev_private;
1956 struct ibv_wq *wq = NULL;
1957 struct mlx5_rxq_ibv *rxq;
1959 if (priv->drop_queue.rxq)
1960 return priv->drop_queue.rxq;
1961 cq = mlx5_glue->create_cq(priv->ctx, 1, NULL, NULL, 0);
1963 DEBUG("port %u cannot allocate CQ for drop queue",
1964 dev->data->port_id);
1968 wq = mlx5_glue->create_wq(priv->ctx,
1969 &(struct ibv_wq_init_attr){
1970 .wq_type = IBV_WQT_RQ,
1977 DEBUG("port %u cannot allocate WQ for drop queue",
1978 dev->data->port_id);
1982 rxq = rte_calloc(__func__, 1, sizeof(*rxq), 0);
1984 DEBUG("port %u cannot allocate drop Rx queue memory",
1985 dev->data->port_id);
1991 priv->drop_queue.rxq = rxq;
1995 claim_zero(mlx5_glue->destroy_wq(wq));
1997 claim_zero(mlx5_glue->destroy_cq(cq));
2002 * Release a drop Rx queue Verbs object.
2005 * Pointer to Ethernet device.
2008 * The Verbs object initialised, NULL otherwise and rte_errno is set.
2011 mlx5_rxq_ibv_drop_release(struct rte_eth_dev *dev)
2013 struct priv *priv = dev->data->dev_private;
2014 struct mlx5_rxq_ibv *rxq = priv->drop_queue.rxq;
2017 claim_zero(mlx5_glue->destroy_wq(rxq->wq));
2019 claim_zero(mlx5_glue->destroy_cq(rxq->cq));
2021 priv->drop_queue.rxq = NULL;
2025 * Create a drop indirection table.
2028 * Pointer to Ethernet device.
2031 * The Verbs object initialised, NULL otherwise and rte_errno is set.
2033 struct mlx5_ind_table_ibv *
2034 mlx5_ind_table_ibv_drop_new(struct rte_eth_dev *dev)
2036 struct priv *priv = dev->data->dev_private;
2037 struct mlx5_ind_table_ibv *ind_tbl;
2038 struct mlx5_rxq_ibv *rxq;
2039 struct mlx5_ind_table_ibv tmpl;
2041 rxq = mlx5_rxq_ibv_drop_new(dev);
2044 tmpl.ind_table = mlx5_glue->create_rwq_ind_table
2046 &(struct ibv_rwq_ind_table_init_attr){
2047 .log_ind_tbl_size = 0,
2048 .ind_tbl = &rxq->wq,
2051 if (!tmpl.ind_table) {
2052 DEBUG("port %u cannot allocate indirection table for drop"
2054 dev->data->port_id);
2058 ind_tbl = rte_calloc(__func__, 1, sizeof(*ind_tbl), 0);
2063 ind_tbl->ind_table = tmpl.ind_table;
2066 mlx5_rxq_ibv_drop_release(dev);
2071 * Release a drop indirection table.
2074 * Pointer to Ethernet device.
2077 mlx5_ind_table_ibv_drop_release(struct rte_eth_dev *dev)
2079 struct priv *priv = dev->data->dev_private;
2080 struct mlx5_ind_table_ibv *ind_tbl = priv->drop_queue.hrxq->ind_table;
2082 claim_zero(mlx5_glue->destroy_rwq_ind_table(ind_tbl->ind_table));
2083 mlx5_rxq_ibv_drop_release(dev);
2085 priv->drop_queue.hrxq->ind_table = NULL;
2089 * Create a drop Rx Hash queue.
2092 * Pointer to Ethernet device.
2095 * The Verbs object initialised, NULL otherwise and rte_errno is set.
2098 mlx5_hrxq_drop_new(struct rte_eth_dev *dev)
2100 struct priv *priv = dev->data->dev_private;
2101 struct mlx5_ind_table_ibv *ind_tbl;
2103 struct mlx5_hrxq *hrxq;
2105 if (priv->drop_queue.hrxq) {
2106 rte_atomic32_inc(&priv->drop_queue.hrxq->refcnt);
2107 return priv->drop_queue.hrxq;
2109 ind_tbl = mlx5_ind_table_ibv_drop_new(dev);
2112 qp = mlx5_glue->create_qp_ex(priv->ctx,
2113 &(struct ibv_qp_init_attr_ex){
2114 .qp_type = IBV_QPT_RAW_PACKET,
2116 IBV_QP_INIT_ATTR_PD |
2117 IBV_QP_INIT_ATTR_IND_TABLE |
2118 IBV_QP_INIT_ATTR_RX_HASH,
2119 .rx_hash_conf = (struct ibv_rx_hash_conf){
2121 IBV_RX_HASH_FUNC_TOEPLITZ,
2122 .rx_hash_key_len = MLX5_RSS_HASH_KEY_LEN,
2123 .rx_hash_key = rss_hash_default_key,
2124 .rx_hash_fields_mask = 0,
2126 .rwq_ind_tbl = ind_tbl->ind_table,
2130 DEBUG("port %u cannot allocate QP for drop queue",
2131 dev->data->port_id);
2135 hrxq = rte_calloc(__func__, 1, sizeof(*hrxq), 0);
2138 "port %u cannot allocate memory for drop queue",
2139 dev->data->port_id);
2143 hrxq->ind_table = ind_tbl;
2145 priv->drop_queue.hrxq = hrxq;
2146 rte_atomic32_set(&hrxq->refcnt, 1);
2150 mlx5_ind_table_ibv_drop_release(dev);
2155 * Release a drop hash Rx queue.
2158 * Pointer to Ethernet device.
2161 mlx5_hrxq_drop_release(struct rte_eth_dev *dev)
2163 struct priv *priv = dev->data->dev_private;
2164 struct mlx5_hrxq *hrxq = priv->drop_queue.hrxq;
2166 if (rte_atomic32_dec_and_test(&hrxq->refcnt)) {
2167 claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
2168 mlx5_ind_table_ibv_drop_release(dev);
2170 priv->drop_queue.hrxq = NULL;