xref: /dpdk/drivers/net/mlx5/mlx5_devx.c (revision c150dff40d859a957d1bfb936e1c831ae97c7afd)
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2020 Mellanox Technologies, Ltd
3  */
4 
5 #include <stddef.h>
6 #include <errno.h>
7 #include <stdbool.h>
8 #include <string.h>
9 #include <stdint.h>
10 #include <sys/queue.h>
11 
12 #include <rte_malloc.h>
13 #include <rte_common.h>
14 #include <rte_eal_paging.h>
15 
16 #include <mlx5_glue.h>
17 #include <mlx5_devx_cmds.h>
18 #include <mlx5_common_devx.h>
19 #include <mlx5_malloc.h>
20 
21 #include "mlx5.h"
22 #include "mlx5_common_os.h"
23 #include "mlx5_tx.h"
24 #include "mlx5_rx.h"
25 #include "mlx5_utils.h"
26 #include "mlx5_devx.h"
27 #include "mlx5_flow.h"
28 #include "mlx5_flow_os.h"
29 
30 /**
31  * Modify RQ vlan stripping offload
32  *
33  * @param rxq_obj
34  *   Rx queue object.
35  *
36  * @return
37  *   0 on success, non-0 otherwise
38  */
39 static int
40 mlx5_rxq_obj_modify_rq_vlan_strip(struct mlx5_rxq_obj *rxq_obj, int on)
41 {
42 	struct mlx5_devx_modify_rq_attr rq_attr;
43 
44 	memset(&rq_attr, 0, sizeof(rq_attr));
45 	rq_attr.rq_state = MLX5_RQC_STATE_RDY;
46 	rq_attr.state = MLX5_RQC_STATE_RDY;
47 	rq_attr.vsd = (on ? 0 : 1);
48 	rq_attr.modify_bitmask = MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD;
49 	return mlx5_devx_cmd_modify_rq(rxq_obj->rq_obj.rq, &rq_attr);
50 }
51 
52 /**
53  * Modify RQ using DevX API.
54  *
55  * @param rxq_obj
56  *   DevX Rx queue object.
57  * @param type
58  *   Type of change queue state.
59  *
60  * @return
61  *   0 on success, a negative errno value otherwise and rte_errno is set.
62  */
63 static int
64 mlx5_devx_modify_rq(struct mlx5_rxq_obj *rxq_obj, uint8_t type)
65 {
66 	struct mlx5_devx_modify_rq_attr rq_attr;
67 
68 	memset(&rq_attr, 0, sizeof(rq_attr));
69 	switch (type) {
70 	case MLX5_RXQ_MOD_ERR2RST:
71 		rq_attr.rq_state = MLX5_RQC_STATE_ERR;
72 		rq_attr.state = MLX5_RQC_STATE_RST;
73 		break;
74 	case MLX5_RXQ_MOD_RST2RDY:
75 		rq_attr.rq_state = MLX5_RQC_STATE_RST;
76 		rq_attr.state = MLX5_RQC_STATE_RDY;
77 		break;
78 	case MLX5_RXQ_MOD_RDY2ERR:
79 		rq_attr.rq_state = MLX5_RQC_STATE_RDY;
80 		rq_attr.state = MLX5_RQC_STATE_ERR;
81 		break;
82 	case MLX5_RXQ_MOD_RDY2RST:
83 		rq_attr.rq_state = MLX5_RQC_STATE_RDY;
84 		rq_attr.state = MLX5_RQC_STATE_RST;
85 		break;
86 	default:
87 		break;
88 	}
89 	return mlx5_devx_cmd_modify_rq(rxq_obj->rq_obj.rq, &rq_attr);
90 }
91 
92 /**
93  * Modify SQ using DevX API.
94  *
95  * @param txq_obj
96  *   DevX Tx queue object.
97  * @param type
98  *   Type of change queue state.
99  * @param dev_port
100  *   Unnecessary.
101  *
102  * @return
103  *   0 on success, a negative errno value otherwise and rte_errno is set.
104  */
105 static int
106 mlx5_devx_modify_sq(struct mlx5_txq_obj *obj, enum mlx5_txq_modify_type type,
107 		    uint8_t dev_port)
108 {
109 	struct mlx5_devx_modify_sq_attr msq_attr = { 0 };
110 	int ret;
111 
112 	if (type != MLX5_TXQ_MOD_RST2RDY) {
113 		/* Change queue state to reset. */
114 		if (type == MLX5_TXQ_MOD_ERR2RDY)
115 			msq_attr.sq_state = MLX5_SQC_STATE_ERR;
116 		else
117 			msq_attr.sq_state = MLX5_SQC_STATE_RDY;
118 		msq_attr.state = MLX5_SQC_STATE_RST;
119 		ret = mlx5_devx_cmd_modify_sq(obj->sq_obj.sq, &msq_attr);
120 		if (ret) {
121 			DRV_LOG(ERR, "Cannot change the Tx SQ state to RESET"
122 				" %s", strerror(errno));
123 			rte_errno = errno;
124 			return ret;
125 		}
126 	}
127 	if (type != MLX5_TXQ_MOD_RDY2RST) {
128 		/* Change queue state to ready. */
129 		msq_attr.sq_state = MLX5_SQC_STATE_RST;
130 		msq_attr.state = MLX5_SQC_STATE_RDY;
131 		ret = mlx5_devx_cmd_modify_sq(obj->sq_obj.sq, &msq_attr);
132 		if (ret) {
133 			DRV_LOG(ERR, "Cannot change the Tx SQ state to READY"
134 				" %s", strerror(errno));
135 			rte_errno = errno;
136 			return ret;
137 		}
138 	}
139 	/*
140 	 * The dev_port variable is relevant only in Verbs API, and there is a
141 	 * pointer that points to this function and a parallel function in verbs
142 	 * intermittently, so they should have the same parameters.
143 	 */
144 	(void)dev_port;
145 	return 0;
146 }
147 
148 /**
149  * Destroy the Rx queue DevX object.
150  *
151  * @param rxq_obj
152  *   Rxq object to destroy.
153  */
154 static void
155 mlx5_rxq_release_devx_resources(struct mlx5_rxq_obj *rxq_obj)
156 {
157 	mlx5_devx_rq_destroy(&rxq_obj->rq_obj);
158 	memset(&rxq_obj->rq_obj, 0, sizeof(rxq_obj->rq_obj));
159 	mlx5_devx_cq_destroy(&rxq_obj->cq_obj);
160 	memset(&rxq_obj->cq_obj, 0, sizeof(rxq_obj->cq_obj));
161 }
162 
163 /**
164  * Release an Rx DevX queue object.
165  *
166  * @param rxq_obj
167  *   DevX Rx queue object.
168  */
169 static void
170 mlx5_rxq_devx_obj_release(struct mlx5_rxq_obj *rxq_obj)
171 {
172 	MLX5_ASSERT(rxq_obj);
173 	if (rxq_obj->rxq_ctrl->type == MLX5_RXQ_TYPE_HAIRPIN) {
174 		MLX5_ASSERT(rxq_obj->rq);
175 		mlx5_devx_modify_rq(rxq_obj, MLX5_RXQ_MOD_RDY2RST);
176 		claim_zero(mlx5_devx_cmd_destroy(rxq_obj->rq));
177 	} else {
178 		MLX5_ASSERT(rxq_obj->cq_obj.cq);
179 		MLX5_ASSERT(rxq_obj->rq_obj.rq);
180 		mlx5_rxq_release_devx_resources(rxq_obj);
181 		if (rxq_obj->devx_channel)
182 			mlx5_os_devx_destroy_event_channel
183 							(rxq_obj->devx_channel);
184 	}
185 }
186 
187 /**
188  * Get event for an Rx DevX queue object.
189  *
190  * @param rxq_obj
191  *   DevX Rx queue object.
192  *
193  * @return
194  *   0 on success, a negative errno value otherwise and rte_errno is set.
195  */
196 static int
197 mlx5_rx_devx_get_event(struct mlx5_rxq_obj *rxq_obj)
198 {
199 #ifdef HAVE_IBV_DEVX_EVENT
200 	union {
201 		struct mlx5dv_devx_async_event_hdr event_resp;
202 		uint8_t buf[sizeof(struct mlx5dv_devx_async_event_hdr) + 128];
203 	} out;
204 	int ret = mlx5_glue->devx_get_event(rxq_obj->devx_channel,
205 					    &out.event_resp,
206 					    sizeof(out.buf));
207 
208 	if (ret < 0) {
209 		rte_errno = errno;
210 		return -rte_errno;
211 	}
212 	if (out.event_resp.cookie != (uint64_t)(uintptr_t)rxq_obj->cq_obj.cq) {
213 		rte_errno = EINVAL;
214 		return -rte_errno;
215 	}
216 	return 0;
217 #else
218 	(void)rxq_obj;
219 	rte_errno = ENOTSUP;
220 	return -rte_errno;
221 #endif /* HAVE_IBV_DEVX_EVENT */
222 }
223 
224 /**
225  * Create a RQ object using DevX.
226  *
227  * @param dev
228  *   Pointer to Ethernet device.
229  * @param idx
230  *   Queue index in DPDK Rx queue array.
231  *
232  * @return
233  *   0 on success, a negative errno value otherwise and rte_errno is set.
234  */
235 static int
236 mlx5_rxq_create_devx_rq_resources(struct rte_eth_dev *dev, uint16_t idx)
237 {
238 	struct mlx5_priv *priv = dev->data->dev_private;
239 	struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
240 	struct mlx5_rxq_ctrl *rxq_ctrl =
241 		container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
242 	struct mlx5_devx_create_rq_attr rq_attr = { 0 };
243 	uint16_t log_desc_n = rxq_data->elts_n - rxq_data->sges_n;
244 	uint32_t wqe_size, log_wqe_size;
245 
246 	/* Fill RQ attributes. */
247 	rq_attr.mem_rq_type = MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE;
248 	rq_attr.flush_in_error_en = 1;
249 	rq_attr.vsd = (rxq_data->vlan_strip) ? 0 : 1;
250 	rq_attr.cqn = rxq_ctrl->obj->cq_obj.cq->id;
251 	rq_attr.scatter_fcs = (rxq_data->crc_present) ? 1 : 0;
252 	rq_attr.ts_format = mlx5_ts_format_conv(priv->sh->rq_ts_format);
253 	/* Fill WQ attributes for this RQ. */
254 	if (mlx5_rxq_mprq_enabled(rxq_data)) {
255 		rq_attr.wq_attr.wq_type = MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ;
256 		/*
257 		 * Number of strides in each WQE:
258 		 * 512*2^single_wqe_log_num_of_strides.
259 		 */
260 		rq_attr.wq_attr.single_wqe_log_num_of_strides =
261 				rxq_data->strd_num_n -
262 				MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES;
263 		/* Stride size = (2^single_stride_log_num_of_bytes)*64B. */
264 		rq_attr.wq_attr.single_stride_log_num_of_bytes =
265 				rxq_data->strd_sz_n -
266 				MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES;
267 		wqe_size = sizeof(struct mlx5_wqe_mprq);
268 	} else {
269 		rq_attr.wq_attr.wq_type = MLX5_WQ_TYPE_CYCLIC;
270 		wqe_size = sizeof(struct mlx5_wqe_data_seg);
271 	}
272 	log_wqe_size = log2above(wqe_size) + rxq_data->sges_n;
273 	wqe_size = 1 << log_wqe_size; /* round up power of two.*/
274 	rq_attr.wq_attr.log_wq_stride = log_wqe_size;
275 	rq_attr.wq_attr.log_wq_sz = log_desc_n;
276 	rq_attr.wq_attr.end_padding_mode = priv->config.hw_padding ?
277 						MLX5_WQ_END_PAD_MODE_ALIGN :
278 						MLX5_WQ_END_PAD_MODE_NONE;
279 	rq_attr.wq_attr.pd = priv->sh->pdn;
280 	rq_attr.counter_set_id = priv->counter_set_id;
281 	/* Create RQ using DevX API. */
282 	return mlx5_devx_rq_create(priv->sh->ctx, &rxq_ctrl->obj->rq_obj,
283 				   wqe_size, log_desc_n, &rq_attr,
284 				   rxq_ctrl->socket);
285 }
286 
287 /**
288  * Create a DevX CQ object for an Rx queue.
289  *
290  * @param dev
291  *   Pointer to Ethernet device.
292  * @param idx
293  *   Queue index in DPDK Rx queue array.
294  *
295  * @return
296  *   0 on success, a negative errno value otherwise and rte_errno is set.
297  */
298 static int
299 mlx5_rxq_create_devx_cq_resources(struct rte_eth_dev *dev, uint16_t idx)
300 {
301 	struct mlx5_devx_cq *cq_obj = 0;
302 	struct mlx5_devx_cq_attr cq_attr = { 0 };
303 	struct mlx5_priv *priv = dev->data->dev_private;
304 	struct mlx5_dev_ctx_shared *sh = priv->sh;
305 	struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
306 	struct mlx5_rxq_ctrl *rxq_ctrl =
307 		container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
308 	unsigned int cqe_n = mlx5_rxq_cqe_num(rxq_data);
309 	uint32_t log_cqe_n;
310 	uint16_t event_nums[1] = { 0 };
311 	int ret = 0;
312 
313 	if (priv->config.cqe_comp && !rxq_data->hw_timestamp &&
314 	    !rxq_data->lro) {
315 		cq_attr.cqe_comp_en = 1u;
316 		rxq_data->mcqe_format = priv->config.cqe_comp_fmt;
317 		rxq_data->byte_mask = UINT32_MAX;
318 		switch (priv->config.cqe_comp_fmt) {
319 		case MLX5_CQE_RESP_FORMAT_HASH:
320 			/* fallthrough */
321 		case MLX5_CQE_RESP_FORMAT_CSUM:
322 			/*
323 			 * Select CSUM miniCQE format only for non-vectorized
324 			 * MPRQ Rx burst, use HASH miniCQE format for others.
325 			 */
326 			if (mlx5_rxq_check_vec_support(rxq_data) < 0 &&
327 			    mlx5_rxq_mprq_enabled(rxq_data))
328 				cq_attr.mini_cqe_res_format =
329 					MLX5_CQE_RESP_FORMAT_CSUM_STRIDX;
330 			else
331 				cq_attr.mini_cqe_res_format =
332 					MLX5_CQE_RESP_FORMAT_HASH;
333 			rxq_data->mcqe_format = cq_attr.mini_cqe_res_format;
334 			break;
335 		case MLX5_CQE_RESP_FORMAT_FTAG_STRIDX:
336 			rxq_data->byte_mask = MLX5_LEN_WITH_MARK_MASK;
337 			/* fallthrough */
338 		case MLX5_CQE_RESP_FORMAT_CSUM_STRIDX:
339 			cq_attr.mini_cqe_res_format = priv->config.cqe_comp_fmt;
340 			break;
341 		case MLX5_CQE_RESP_FORMAT_L34H_STRIDX:
342 			cq_attr.mini_cqe_res_format = 0;
343 			cq_attr.mini_cqe_res_format_ext = 1;
344 			break;
345 		}
346 		DRV_LOG(DEBUG,
347 			"Port %u Rx CQE compression is enabled, format %d.",
348 			dev->data->port_id, priv->config.cqe_comp_fmt);
349 		/*
350 		 * For vectorized Rx, it must not be doubled in order to
351 		 * make cq_ci and rq_ci aligned.
352 		 */
353 		if (mlx5_rxq_check_vec_support(rxq_data) < 0)
354 			cqe_n *= 2;
355 	} else if (priv->config.cqe_comp && rxq_data->hw_timestamp) {
356 		DRV_LOG(DEBUG,
357 			"Port %u Rx CQE compression is disabled for HW"
358 			" timestamp.",
359 			dev->data->port_id);
360 	} else if (priv->config.cqe_comp && rxq_data->lro) {
361 		DRV_LOG(DEBUG,
362 			"Port %u Rx CQE compression is disabled for LRO.",
363 			dev->data->port_id);
364 	}
365 	cq_attr.uar_page_id = mlx5_os_get_devx_uar_page_id(sh->devx_rx_uar);
366 	log_cqe_n = log2above(cqe_n);
367 	/* Create CQ using DevX API. */
368 	ret = mlx5_devx_cq_create(sh->ctx, &rxq_ctrl->obj->cq_obj, log_cqe_n,
369 				  &cq_attr, sh->numa_node);
370 	if (ret)
371 		return ret;
372 	cq_obj = &rxq_ctrl->obj->cq_obj;
373 	rxq_data->cqes = (volatile struct mlx5_cqe (*)[])
374 							(uintptr_t)cq_obj->cqes;
375 	rxq_data->cq_db = cq_obj->db_rec;
376 	rxq_data->cq_uar = mlx5_os_get_devx_uar_base_addr(sh->devx_rx_uar);
377 	rxq_data->cqe_n = log_cqe_n;
378 	rxq_data->cqn = cq_obj->cq->id;
379 	if (rxq_ctrl->obj->devx_channel) {
380 		ret = mlx5_os_devx_subscribe_devx_event
381 					      (rxq_ctrl->obj->devx_channel,
382 					       cq_obj->cq->obj,
383 					       sizeof(event_nums),
384 					       event_nums,
385 					       (uint64_t)(uintptr_t)cq_obj->cq);
386 		if (ret) {
387 			DRV_LOG(ERR, "Fail to subscribe CQ to event channel.");
388 			ret = errno;
389 			mlx5_devx_cq_destroy(cq_obj);
390 			memset(cq_obj, 0, sizeof(*cq_obj));
391 			rte_errno = ret;
392 			return -ret;
393 		}
394 	}
395 	return 0;
396 }
397 
398 /**
399  * Create the Rx hairpin queue object.
400  *
401  * @param dev
402  *   Pointer to Ethernet device.
403  * @param idx
404  *   Queue index in DPDK Rx queue array.
405  *
406  * @return
407  *   0 on success, a negative errno value otherwise and rte_errno is set.
408  */
409 static int
410 mlx5_rxq_obj_hairpin_new(struct rte_eth_dev *dev, uint16_t idx)
411 {
412 	struct mlx5_priv *priv = dev->data->dev_private;
413 	struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
414 	struct mlx5_rxq_ctrl *rxq_ctrl =
415 		container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
416 	struct mlx5_devx_create_rq_attr attr = { 0 };
417 	struct mlx5_rxq_obj *tmpl = rxq_ctrl->obj;
418 	uint32_t max_wq_data;
419 
420 	MLX5_ASSERT(rxq_data);
421 	MLX5_ASSERT(tmpl);
422 	tmpl->rxq_ctrl = rxq_ctrl;
423 	attr.hairpin = 1;
424 	max_wq_data = priv->config.hca_attr.log_max_hairpin_wq_data_sz;
425 	/* Jumbo frames > 9KB should be supported, and more packets. */
426 	if (priv->config.log_hp_size != (uint32_t)MLX5_ARG_UNSET) {
427 		if (priv->config.log_hp_size > max_wq_data) {
428 			DRV_LOG(ERR, "Total data size %u power of 2 is "
429 				"too large for hairpin.",
430 				priv->config.log_hp_size);
431 			rte_errno = ERANGE;
432 			return -rte_errno;
433 		}
434 		attr.wq_attr.log_hairpin_data_sz = priv->config.log_hp_size;
435 	} else {
436 		attr.wq_attr.log_hairpin_data_sz =
437 				(max_wq_data < MLX5_HAIRPIN_JUMBO_LOG_SIZE) ?
438 				 max_wq_data : MLX5_HAIRPIN_JUMBO_LOG_SIZE;
439 	}
440 	/* Set the packets number to the maximum value for performance. */
441 	attr.wq_attr.log_hairpin_num_packets =
442 			attr.wq_attr.log_hairpin_data_sz -
443 			MLX5_HAIRPIN_QUEUE_STRIDE;
444 	attr.counter_set_id = priv->counter_set_id;
445 	tmpl->rq = mlx5_devx_cmd_create_rq(priv->sh->ctx, &attr,
446 					   rxq_ctrl->socket);
447 	if (!tmpl->rq) {
448 		DRV_LOG(ERR,
449 			"Port %u Rx hairpin queue %u can't create rq object.",
450 			dev->data->port_id, idx);
451 		rte_errno = errno;
452 		return -rte_errno;
453 	}
454 	dev->data->rx_queue_state[idx] = RTE_ETH_QUEUE_STATE_HAIRPIN;
455 	return 0;
456 }
457 
458 /**
459  * Create the Rx queue DevX object.
460  *
461  * @param dev
462  *   Pointer to Ethernet device.
463  * @param idx
464  *   Queue index in DPDK Rx queue array.
465  *
466  * @return
467  *   0 on success, a negative errno value otherwise and rte_errno is set.
468  */
469 static int
470 mlx5_rxq_devx_obj_new(struct rte_eth_dev *dev, uint16_t idx)
471 {
472 	struct mlx5_priv *priv = dev->data->dev_private;
473 	struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
474 	struct mlx5_rxq_ctrl *rxq_ctrl =
475 		container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
476 	struct mlx5_rxq_obj *tmpl = rxq_ctrl->obj;
477 	int ret = 0;
478 
479 	MLX5_ASSERT(rxq_data);
480 	MLX5_ASSERT(tmpl);
481 	if (rxq_ctrl->type == MLX5_RXQ_TYPE_HAIRPIN)
482 		return mlx5_rxq_obj_hairpin_new(dev, idx);
483 	tmpl->rxq_ctrl = rxq_ctrl;
484 	if (rxq_ctrl->irq) {
485 		int devx_ev_flag =
486 			  MLX5DV_DEVX_CREATE_EVENT_CHANNEL_FLAGS_OMIT_EV_DATA;
487 
488 		tmpl->devx_channel = mlx5_os_devx_create_event_channel
489 								(priv->sh->ctx,
490 								 devx_ev_flag);
491 		if (!tmpl->devx_channel) {
492 			rte_errno = errno;
493 			DRV_LOG(ERR, "Failed to create event channel %d.",
494 				rte_errno);
495 			goto error;
496 		}
497 		tmpl->fd = mlx5_os_get_devx_channel_fd(tmpl->devx_channel);
498 	}
499 	/* Create CQ using DevX API. */
500 	ret = mlx5_rxq_create_devx_cq_resources(dev, idx);
501 	if (ret) {
502 		DRV_LOG(ERR, "Failed to create CQ.");
503 		goto error;
504 	}
505 	/* Create RQ using DevX API. */
506 	ret = mlx5_rxq_create_devx_rq_resources(dev, idx);
507 	if (ret) {
508 		DRV_LOG(ERR, "Port %u Rx queue %u RQ creation failure.",
509 			dev->data->port_id, idx);
510 		rte_errno = ENOMEM;
511 		goto error;
512 	}
513 	/* Change queue state to ready. */
514 	ret = mlx5_devx_modify_rq(tmpl, MLX5_RXQ_MOD_RST2RDY);
515 	if (ret)
516 		goto error;
517 	rxq_data->wqes = (void *)(uintptr_t)tmpl->rq_obj.umem_buf;
518 	rxq_data->rq_db = (uint32_t *)(uintptr_t)tmpl->rq_obj.db_rec;
519 	rxq_data->cq_arm_sn = 0;
520 	rxq_data->cq_ci = 0;
521 	mlx5_rxq_initialize(rxq_data);
522 	dev->data->rx_queue_state[idx] = RTE_ETH_QUEUE_STATE_STARTED;
523 	rxq_ctrl->wqn = tmpl->rq_obj.rq->id;
524 	return 0;
525 error:
526 	ret = rte_errno; /* Save rte_errno before cleanup. */
527 	mlx5_rxq_devx_obj_release(tmpl);
528 	rte_errno = ret; /* Restore rte_errno. */
529 	return -rte_errno;
530 }
531 
532 /**
533  * Prepare RQT attribute structure for DevX RQT API.
534  *
535  * @param dev
536  *   Pointer to Ethernet device.
537  * @param log_n
538  *   Log of number of queues in the array.
539  * @param ind_tbl
540  *   DevX indirection table object.
541  *
542  * @return
543  *   The RQT attr object initialized, NULL otherwise and rte_errno is set.
544  */
545 static struct mlx5_devx_rqt_attr *
546 mlx5_devx_ind_table_create_rqt_attr(struct rte_eth_dev *dev,
547 				     const unsigned int log_n,
548 				     const uint16_t *queues,
549 				     const uint32_t queues_n)
550 {
551 	struct mlx5_priv *priv = dev->data->dev_private;
552 	struct mlx5_devx_rqt_attr *rqt_attr = NULL;
553 	const unsigned int rqt_n = 1 << log_n;
554 	unsigned int i, j;
555 
556 	rqt_attr = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*rqt_attr) +
557 			      rqt_n * sizeof(uint32_t), 0, SOCKET_ID_ANY);
558 	if (!rqt_attr) {
559 		DRV_LOG(ERR, "Port %u cannot allocate RQT resources.",
560 			dev->data->port_id);
561 		rte_errno = ENOMEM;
562 		return NULL;
563 	}
564 	rqt_attr->rqt_max_size = priv->config.ind_table_max_size;
565 	rqt_attr->rqt_actual_size = rqt_n;
566 	for (i = 0; i != queues_n; ++i) {
567 		struct mlx5_rxq_data *rxq = (*priv->rxqs)[queues[i]];
568 		struct mlx5_rxq_ctrl *rxq_ctrl =
569 				container_of(rxq, struct mlx5_rxq_ctrl, rxq);
570 
571 		rqt_attr->rq_list[i] = rxq_ctrl->obj->rq_obj.rq->id;
572 	}
573 	MLX5_ASSERT(i > 0);
574 	for (j = 0; i != rqt_n; ++j, ++i)
575 		rqt_attr->rq_list[i] = rqt_attr->rq_list[j];
576 	return rqt_attr;
577 }
578 
579 /**
580  * Create RQT using DevX API as a filed of indirection table.
581  *
582  * @param dev
583  *   Pointer to Ethernet device.
584  * @param log_n
585  *   Log of number of queues in the array.
586  * @param ind_tbl
587  *   DevX indirection table object.
588  *
589  * @return
590  *   0 on success, a negative errno value otherwise and rte_errno is set.
591  */
592 static int
593 mlx5_devx_ind_table_new(struct rte_eth_dev *dev, const unsigned int log_n,
594 			struct mlx5_ind_table_obj *ind_tbl)
595 {
596 	struct mlx5_priv *priv = dev->data->dev_private;
597 	struct mlx5_devx_rqt_attr *rqt_attr = NULL;
598 
599 	MLX5_ASSERT(ind_tbl);
600 	rqt_attr = mlx5_devx_ind_table_create_rqt_attr(dev, log_n,
601 							ind_tbl->queues,
602 							ind_tbl->queues_n);
603 	if (!rqt_attr)
604 		return -rte_errno;
605 	ind_tbl->rqt = mlx5_devx_cmd_create_rqt(priv->sh->ctx, rqt_attr);
606 	mlx5_free(rqt_attr);
607 	if (!ind_tbl->rqt) {
608 		DRV_LOG(ERR, "Port %u cannot create DevX RQT.",
609 			dev->data->port_id);
610 		rte_errno = errno;
611 		return -rte_errno;
612 	}
613 	return 0;
614 }
615 
616 /**
617  * Modify RQT using DevX API as a filed of indirection table.
618  *
619  * @param dev
620  *   Pointer to Ethernet device.
621  * @param log_n
622  *   Log of number of queues in the array.
623  * @param ind_tbl
624  *   DevX indirection table object.
625  *
626  * @return
627  *   0 on success, a negative errno value otherwise and rte_errno is set.
628  */
629 static int
630 mlx5_devx_ind_table_modify(struct rte_eth_dev *dev, const unsigned int log_n,
631 			   const uint16_t *queues, const uint32_t queues_n,
632 			   struct mlx5_ind_table_obj *ind_tbl)
633 {
634 	int ret = 0;
635 	struct mlx5_devx_rqt_attr *rqt_attr = NULL;
636 
637 	MLX5_ASSERT(ind_tbl);
638 	rqt_attr = mlx5_devx_ind_table_create_rqt_attr(dev, log_n,
639 							queues,
640 							queues_n);
641 	if (!rqt_attr)
642 		return -rte_errno;
643 	ret = mlx5_devx_cmd_modify_rqt(ind_tbl->rqt, rqt_attr);
644 	mlx5_free(rqt_attr);
645 	if (ret)
646 		DRV_LOG(ERR, "Port %u cannot modify DevX RQT.",
647 			dev->data->port_id);
648 	return ret;
649 }
650 
651 /**
652  * Destroy the DevX RQT object.
653  *
654  * @param ind_table
655  *   Indirection table to release.
656  */
657 static void
658 mlx5_devx_ind_table_destroy(struct mlx5_ind_table_obj *ind_tbl)
659 {
660 	claim_zero(mlx5_devx_cmd_destroy(ind_tbl->rqt));
661 }
662 
663 /**
664  * Set TIR attribute struct with relevant input values.
665  *
666  * @param[in] dev
667  *   Pointer to Ethernet device.
668  * @param[in] rss_key
669  *   RSS key for the Rx hash queue.
670  * @param[in] hash_fields
671  *   Verbs protocol hash field to make the RSS on.
672  * @param[in] ind_tbl
673  *   Indirection table for TIR.
674  * @param[in] tunnel
675  *   Tunnel type.
676  * @param[out] tir_attr
677  *   Parameters structure for TIR creation/modification.
678  *
679  * @return
680  *   The Verbs/DevX object initialised index, 0 otherwise and rte_errno is set.
681  */
682 static void
683 mlx5_devx_tir_attr_set(struct rte_eth_dev *dev, const uint8_t *rss_key,
684 		       uint64_t hash_fields,
685 		       const struct mlx5_ind_table_obj *ind_tbl,
686 		       int tunnel, struct mlx5_devx_tir_attr *tir_attr)
687 {
688 	struct mlx5_priv *priv = dev->data->dev_private;
689 	struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[ind_tbl->queues[0]];
690 	struct mlx5_rxq_ctrl *rxq_ctrl =
691 		container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
692 	enum mlx5_rxq_type rxq_obj_type = rxq_ctrl->type;
693 	bool lro = true;
694 	uint32_t i;
695 
696 	/* Enable TIR LRO only if all the queues were configured for. */
697 	for (i = 0; i < ind_tbl->queues_n; ++i) {
698 		if (!(*priv->rxqs)[ind_tbl->queues[i]]->lro) {
699 			lro = false;
700 			break;
701 		}
702 	}
703 	memset(tir_attr, 0, sizeof(*tir_attr));
704 	tir_attr->disp_type = MLX5_TIRC_DISP_TYPE_INDIRECT;
705 	tir_attr->rx_hash_fn = MLX5_RX_HASH_FN_TOEPLITZ;
706 	tir_attr->tunneled_offload_en = !!tunnel;
707 	/* If needed, translate hash_fields bitmap to PRM format. */
708 	if (hash_fields) {
709 		struct mlx5_rx_hash_field_select *rx_hash_field_select =
710 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
711 			hash_fields & IBV_RX_HASH_INNER ?
712 				&tir_attr->rx_hash_field_selector_inner :
713 #endif
714 				&tir_attr->rx_hash_field_selector_outer;
715 		/* 1 bit: 0: IPv4, 1: IPv6. */
716 		rx_hash_field_select->l3_prot_type =
717 					!!(hash_fields & MLX5_IPV6_IBV_RX_HASH);
718 		/* 1 bit: 0: TCP, 1: UDP. */
719 		rx_hash_field_select->l4_prot_type =
720 					!!(hash_fields & MLX5_UDP_IBV_RX_HASH);
721 		/* Bitmask which sets which fields to use in RX Hash. */
722 		rx_hash_field_select->selected_fields =
723 			((!!(hash_fields & MLX5_L3_SRC_IBV_RX_HASH)) <<
724 			 MLX5_RX_HASH_FIELD_SELECT_SELECTED_FIELDS_SRC_IP) |
725 			(!!(hash_fields & MLX5_L3_DST_IBV_RX_HASH)) <<
726 			 MLX5_RX_HASH_FIELD_SELECT_SELECTED_FIELDS_DST_IP |
727 			(!!(hash_fields & MLX5_L4_SRC_IBV_RX_HASH)) <<
728 			 MLX5_RX_HASH_FIELD_SELECT_SELECTED_FIELDS_L4_SPORT |
729 			(!!(hash_fields & MLX5_L4_DST_IBV_RX_HASH)) <<
730 			 MLX5_RX_HASH_FIELD_SELECT_SELECTED_FIELDS_L4_DPORT;
731 	}
732 	if (rxq_obj_type == MLX5_RXQ_TYPE_HAIRPIN)
733 		tir_attr->transport_domain = priv->sh->td->id;
734 	else
735 		tir_attr->transport_domain = priv->sh->tdn;
736 	memcpy(tir_attr->rx_hash_toeplitz_key, rss_key, MLX5_RSS_HASH_KEY_LEN);
737 	tir_attr->indirect_table = ind_tbl->rqt->id;
738 	if (dev->data->dev_conf.lpbk_mode)
739 		tir_attr->self_lb_block =
740 					MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
741 	if (lro) {
742 		tir_attr->lro_timeout_period_usecs = priv->config.lro.timeout;
743 		tir_attr->lro_max_msg_sz = priv->max_lro_msg_size;
744 		tir_attr->lro_enable_mask =
745 				MLX5_TIRC_LRO_ENABLE_MASK_IPV4_LRO |
746 				MLX5_TIRC_LRO_ENABLE_MASK_IPV6_LRO;
747 	}
748 }
749 
750 /**
751  * Create an Rx Hash queue.
752  *
753  * @param dev
754  *   Pointer to Ethernet device.
755  * @param hrxq
756  *   Pointer to Rx Hash queue.
757  * @param tunnel
758  *   Tunnel type.
759  *
760  * @return
761  *   0 on success, a negative errno value otherwise and rte_errno is set.
762  */
763 static int
764 mlx5_devx_hrxq_new(struct rte_eth_dev *dev, struct mlx5_hrxq *hrxq,
765 		   int tunnel __rte_unused)
766 {
767 	struct mlx5_priv *priv = dev->data->dev_private;
768 	struct mlx5_devx_tir_attr tir_attr = {0};
769 	int err;
770 
771 	mlx5_devx_tir_attr_set(dev, hrxq->rss_key, hrxq->hash_fields,
772 			       hrxq->ind_table, tunnel, &tir_attr);
773 	hrxq->tir = mlx5_devx_cmd_create_tir(priv->sh->ctx, &tir_attr);
774 	if (!hrxq->tir) {
775 		DRV_LOG(ERR, "Port %u cannot create DevX TIR.",
776 			dev->data->port_id);
777 		rte_errno = errno;
778 		goto error;
779 	}
780 #if defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_INFINIBAND_VERBS_H)
781 	if (mlx5_flow_os_create_flow_action_dest_devx_tir(hrxq->tir,
782 							  &hrxq->action)) {
783 		rte_errno = errno;
784 		goto error;
785 	}
786 #endif
787 	return 0;
788 error:
789 	err = rte_errno; /* Save rte_errno before cleanup. */
790 	if (hrxq->tir)
791 		claim_zero(mlx5_devx_cmd_destroy(hrxq->tir));
792 	rte_errno = err; /* Restore rte_errno. */
793 	return -rte_errno;
794 }
795 
796 /**
797  * Destroy a DevX TIR object.
798  *
799  * @param hrxq
800  *   Hash Rx queue to release its tir.
801  */
802 static void
803 mlx5_devx_tir_destroy(struct mlx5_hrxq *hrxq)
804 {
805 	claim_zero(mlx5_devx_cmd_destroy(hrxq->tir));
806 }
807 
808 /**
809  * Modify an Rx Hash queue configuration.
810  *
811  * @param dev
812  *   Pointer to Ethernet device.
813  * @param hrxq
814  *   Hash Rx queue to modify.
815  * @param rss_key
816  *   RSS key for the Rx hash queue.
817  * @param hash_fields
818  *   Verbs protocol hash field to make the RSS on.
819  * @param[in] ind_tbl
820  *   Indirection table for TIR.
821  *
822  * @return
823  *   0 on success, a negative errno value otherwise and rte_errno is set.
824  */
825 static int
826 mlx5_devx_hrxq_modify(struct rte_eth_dev *dev, struct mlx5_hrxq *hrxq,
827 		       const uint8_t *rss_key,
828 		       uint64_t hash_fields,
829 		       const struct mlx5_ind_table_obj *ind_tbl)
830 {
831 	struct mlx5_devx_modify_tir_attr modify_tir = {0};
832 
833 	/*
834 	 * untested for modification fields:
835 	 * - rx_hash_symmetric not set in hrxq_new(),
836 	 * - rx_hash_fn set hard-coded in hrxq_new(),
837 	 * - lro_xxx not set after rxq setup
838 	 */
839 	if (ind_tbl != hrxq->ind_table)
840 		modify_tir.modify_bitmask |=
841 			MLX5_MODIFY_TIR_IN_MODIFY_BITMASK_INDIRECT_TABLE;
842 	if (hash_fields != hrxq->hash_fields ||
843 			memcmp(hrxq->rss_key, rss_key, MLX5_RSS_HASH_KEY_LEN))
844 		modify_tir.modify_bitmask |=
845 			MLX5_MODIFY_TIR_IN_MODIFY_BITMASK_HASH;
846 	mlx5_devx_tir_attr_set(dev, rss_key, hash_fields, ind_tbl,
847 			       0, /* N/A - tunnel modification unsupported */
848 			       &modify_tir.tir);
849 	modify_tir.tirn = hrxq->tir->id;
850 	if (mlx5_devx_cmd_modify_tir(hrxq->tir, &modify_tir)) {
851 		DRV_LOG(ERR, "port %u cannot modify DevX TIR",
852 			dev->data->port_id);
853 		rte_errno = errno;
854 		return -rte_errno;
855 	}
856 	return 0;
857 }
858 
859 /**
860  * Create a DevX drop action for Rx Hash queue.
861  *
862  * @param dev
863  *   Pointer to Ethernet device.
864  *
865  * @return
866  *   0 on success, a negative errno value otherwise and rte_errno is set.
867  */
868 static int
869 mlx5_devx_drop_action_create(struct rte_eth_dev *dev)
870 {
871 	(void)dev;
872 	DRV_LOG(ERR, "DevX drop action is not supported yet.");
873 	rte_errno = ENOTSUP;
874 	return -rte_errno;
875 }
876 
877 /**
878  * Release a drop hash Rx queue.
879  *
880  * @param dev
881  *   Pointer to Ethernet device.
882  */
883 static void
884 mlx5_devx_drop_action_destroy(struct rte_eth_dev *dev)
885 {
886 	(void)dev;
887 	DRV_LOG(ERR, "DevX drop action is not supported yet.");
888 	rte_errno = ENOTSUP;
889 }
890 
891 /**
892  * Create the Tx hairpin queue object.
893  *
894  * @param dev
895  *   Pointer to Ethernet device.
896  * @param idx
897  *   Queue index in DPDK Tx queue array.
898  *
899  * @return
900  *   0 on success, a negative errno value otherwise and rte_errno is set.
901  */
902 static int
903 mlx5_txq_obj_hairpin_new(struct rte_eth_dev *dev, uint16_t idx)
904 {
905 	struct mlx5_priv *priv = dev->data->dev_private;
906 	struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
907 	struct mlx5_txq_ctrl *txq_ctrl =
908 		container_of(txq_data, struct mlx5_txq_ctrl, txq);
909 	struct mlx5_devx_create_sq_attr attr = { 0 };
910 	struct mlx5_txq_obj *tmpl = txq_ctrl->obj;
911 	uint32_t max_wq_data;
912 
913 	MLX5_ASSERT(txq_data);
914 	MLX5_ASSERT(tmpl);
915 	tmpl->txq_ctrl = txq_ctrl;
916 	attr.hairpin = 1;
917 	attr.tis_lst_sz = 1;
918 	max_wq_data = priv->config.hca_attr.log_max_hairpin_wq_data_sz;
919 	/* Jumbo frames > 9KB should be supported, and more packets. */
920 	if (priv->config.log_hp_size != (uint32_t)MLX5_ARG_UNSET) {
921 		if (priv->config.log_hp_size > max_wq_data) {
922 			DRV_LOG(ERR, "Total data size %u power of 2 is "
923 				"too large for hairpin.",
924 				priv->config.log_hp_size);
925 			rte_errno = ERANGE;
926 			return -rte_errno;
927 		}
928 		attr.wq_attr.log_hairpin_data_sz = priv->config.log_hp_size;
929 	} else {
930 		attr.wq_attr.log_hairpin_data_sz =
931 				(max_wq_data < MLX5_HAIRPIN_JUMBO_LOG_SIZE) ?
932 				 max_wq_data : MLX5_HAIRPIN_JUMBO_LOG_SIZE;
933 	}
934 	/* Set the packets number to the maximum value for performance. */
935 	attr.wq_attr.log_hairpin_num_packets =
936 			attr.wq_attr.log_hairpin_data_sz -
937 			MLX5_HAIRPIN_QUEUE_STRIDE;
938 	attr.tis_num = priv->sh->tis->id;
939 	tmpl->sq = mlx5_devx_cmd_create_sq(priv->sh->ctx, &attr);
940 	if (!tmpl->sq) {
941 		DRV_LOG(ERR,
942 			"Port %u tx hairpin queue %u can't create SQ object.",
943 			dev->data->port_id, idx);
944 		rte_errno = errno;
945 		return -rte_errno;
946 	}
947 	return 0;
948 }
949 
950 #if defined(HAVE_MLX5DV_DEVX_UAR_OFFSET) || !defined(HAVE_INFINIBAND_VERBS_H)
951 /**
952  * Destroy the Tx queue DevX object.
953  *
954  * @param txq_obj
955  *   Txq object to destroy.
956  */
957 static void
958 mlx5_txq_release_devx_resources(struct mlx5_txq_obj *txq_obj)
959 {
960 	mlx5_devx_sq_destroy(&txq_obj->sq_obj);
961 	memset(&txq_obj->sq_obj, 0, sizeof(txq_obj->sq_obj));
962 	mlx5_devx_cq_destroy(&txq_obj->cq_obj);
963 	memset(&txq_obj->cq_obj, 0, sizeof(txq_obj->cq_obj));
964 }
965 
966 /**
967  * Create a SQ object and its resources using DevX.
968  *
969  * @param dev
970  *   Pointer to Ethernet device.
971  * @param idx
972  *   Queue index in DPDK Tx queue array.
973  * @param[in] log_desc_n
974  *   Log of number of descriptors in queue.
975  *
976  * @return
977  *   0 on success, a negative errno value otherwise and rte_errno is set.
978  */
979 static int
980 mlx5_txq_create_devx_sq_resources(struct rte_eth_dev *dev, uint16_t idx,
981 				  uint16_t log_desc_n)
982 {
983 	struct mlx5_priv *priv = dev->data->dev_private;
984 	struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
985 	struct mlx5_txq_ctrl *txq_ctrl =
986 			container_of(txq_data, struct mlx5_txq_ctrl, txq);
987 	struct mlx5_txq_obj *txq_obj = txq_ctrl->obj;
988 	struct mlx5_devx_create_sq_attr sq_attr = {
989 		.flush_in_error_en = 1,
990 		.allow_multi_pkt_send_wqe = !!priv->config.mps,
991 		.min_wqe_inline_mode = priv->config.hca_attr.vport_inline_mode,
992 		.allow_swp = !!priv->config.swp,
993 		.cqn = txq_obj->cq_obj.cq->id,
994 		.tis_lst_sz = 1,
995 		.tis_num = priv->sh->tis->id,
996 		.wq_attr = (struct mlx5_devx_wq_attr){
997 			.pd = priv->sh->pdn,
998 			.uar_page =
999 				 mlx5_os_get_devx_uar_page_id(priv->sh->tx_uar),
1000 		},
1001 		.ts_format = mlx5_ts_format_conv(priv->sh->sq_ts_format),
1002 	};
1003 	/* Create Send Queue object with DevX. */
1004 	return mlx5_devx_sq_create(priv->sh->ctx, &txq_obj->sq_obj, log_desc_n,
1005 				   &sq_attr, priv->sh->numa_node);
1006 }
1007 #endif
1008 
1009 /**
1010  * Create the Tx queue DevX object.
1011  *
1012  * @param dev
1013  *   Pointer to Ethernet device.
1014  * @param idx
1015  *   Queue index in DPDK Tx queue array.
1016  *
1017  * @return
1018  *   0 on success, a negative errno value otherwise and rte_errno is set.
1019  */
1020 int
1021 mlx5_txq_devx_obj_new(struct rte_eth_dev *dev, uint16_t idx)
1022 {
1023 	struct mlx5_priv *priv = dev->data->dev_private;
1024 	struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
1025 	struct mlx5_txq_ctrl *txq_ctrl =
1026 			container_of(txq_data, struct mlx5_txq_ctrl, txq);
1027 
1028 	if (txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN)
1029 		return mlx5_txq_obj_hairpin_new(dev, idx);
1030 #if !defined(HAVE_MLX5DV_DEVX_UAR_OFFSET) && defined(HAVE_INFINIBAND_VERBS_H)
1031 	DRV_LOG(ERR, "Port %u Tx queue %u cannot create with DevX, no UAR.",
1032 		     dev->data->port_id, idx);
1033 	rte_errno = ENOMEM;
1034 	return -rte_errno;
1035 #else
1036 	struct mlx5_dev_ctx_shared *sh = priv->sh;
1037 	struct mlx5_txq_obj *txq_obj = txq_ctrl->obj;
1038 	struct mlx5_devx_cq_attr cq_attr = {
1039 		.uar_page_id = mlx5_os_get_devx_uar_page_id(sh->tx_uar),
1040 	};
1041 	void *reg_addr;
1042 	uint32_t cqe_n, log_desc_n;
1043 	uint32_t wqe_n, wqe_size;
1044 	int ret = 0;
1045 
1046 	MLX5_ASSERT(txq_data);
1047 	MLX5_ASSERT(txq_obj);
1048 	txq_obj->txq_ctrl = txq_ctrl;
1049 	txq_obj->dev = dev;
1050 	cqe_n = (1UL << txq_data->elts_n) / MLX5_TX_COMP_THRESH +
1051 		1 + MLX5_TX_COMP_THRESH_INLINE_DIV;
1052 	log_desc_n = log2above(cqe_n);
1053 	cqe_n = 1UL << log_desc_n;
1054 	if (cqe_n > UINT16_MAX) {
1055 		DRV_LOG(ERR, "Port %u Tx queue %u requests to many CQEs %u.",
1056 			dev->data->port_id, txq_data->idx, cqe_n);
1057 		rte_errno = EINVAL;
1058 		return 0;
1059 	}
1060 	/* Create completion queue object with DevX. */
1061 	ret = mlx5_devx_cq_create(sh->ctx, &txq_obj->cq_obj, log_desc_n,
1062 				  &cq_attr, priv->sh->numa_node);
1063 	if (ret) {
1064 		DRV_LOG(ERR, "Port %u Tx queue %u CQ creation failure.",
1065 			dev->data->port_id, idx);
1066 		goto error;
1067 	}
1068 	txq_data->cqe_n = log_desc_n;
1069 	txq_data->cqe_s = cqe_n;
1070 	txq_data->cqe_m = txq_data->cqe_s - 1;
1071 	txq_data->cqes = txq_obj->cq_obj.cqes;
1072 	txq_data->cq_ci = 0;
1073 	txq_data->cq_pi = 0;
1074 	txq_data->cq_db = txq_obj->cq_obj.db_rec;
1075 	*txq_data->cq_db = 0;
1076 	/*
1077 	 * Adjust the amount of WQEs depending on inline settings.
1078 	 * The number of descriptors should be enough to handle
1079 	 * the specified number of packets. If queue is being created
1080 	 * with Verbs the rdma-core does queue size adjustment
1081 	 * internally in the mlx5_calc_sq_size(), we do the same
1082 	 * for the queue being created with DevX at this point.
1083 	 */
1084 	wqe_size = txq_data->tso_en ?
1085 		   RTE_ALIGN(txq_ctrl->max_tso_header, MLX5_WSEG_SIZE) : 0;
1086 	wqe_size += sizeof(struct mlx5_wqe_cseg) +
1087 		    sizeof(struct mlx5_wqe_eseg) +
1088 		    sizeof(struct mlx5_wqe_dseg);
1089 	if (txq_data->inlen_send)
1090 		wqe_size = RTE_MAX(wqe_size, sizeof(struct mlx5_wqe_cseg) +
1091 					     sizeof(struct mlx5_wqe_eseg) +
1092 					     RTE_ALIGN(txq_data->inlen_send +
1093 						       sizeof(uint32_t),
1094 						       MLX5_WSEG_SIZE));
1095 	wqe_size = RTE_ALIGN(wqe_size, MLX5_WQE_SIZE) / MLX5_WQE_SIZE;
1096 	/* Create Send Queue object with DevX. */
1097 	wqe_n = RTE_MIN((1UL << txq_data->elts_n) * wqe_size,
1098 			(uint32_t)priv->sh->device_attr.max_qp_wr);
1099 	log_desc_n = log2above(wqe_n);
1100 	ret = mlx5_txq_create_devx_sq_resources(dev, idx, log_desc_n);
1101 	if (ret) {
1102 		DRV_LOG(ERR, "Port %u Tx queue %u SQ creation failure.",
1103 			dev->data->port_id, idx);
1104 		rte_errno = errno;
1105 		goto error;
1106 	}
1107 	/* Create the Work Queue. */
1108 	txq_data->wqe_n = log_desc_n;
1109 	txq_data->wqe_s = 1 << txq_data->wqe_n;
1110 	txq_data->wqe_m = txq_data->wqe_s - 1;
1111 	txq_data->wqes = (struct mlx5_wqe *)(uintptr_t)txq_obj->sq_obj.wqes;
1112 	txq_data->wqes_end = txq_data->wqes + txq_data->wqe_s;
1113 	txq_data->wqe_ci = 0;
1114 	txq_data->wqe_pi = 0;
1115 	txq_data->wqe_comp = 0;
1116 	txq_data->wqe_thres = txq_data->wqe_s / MLX5_TX_COMP_THRESH_INLINE_DIV;
1117 	txq_data->qp_db = &txq_obj->sq_obj.db_rec[MLX5_SND_DBR];
1118 	*txq_data->qp_db = 0;
1119 	txq_data->qp_num_8s = txq_obj->sq_obj.sq->id << 8;
1120 	/* Change Send Queue state to Ready-to-Send. */
1121 	ret = mlx5_devx_modify_sq(txq_obj, MLX5_TXQ_MOD_RST2RDY, 0);
1122 	if (ret) {
1123 		rte_errno = errno;
1124 		DRV_LOG(ERR,
1125 			"Port %u Tx queue %u SQ state to SQC_STATE_RDY failed.",
1126 			dev->data->port_id, idx);
1127 		goto error;
1128 	}
1129 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
1130 	/*
1131 	 * If using DevX need to query and store TIS transport domain value.
1132 	 * This is done once per port.
1133 	 * Will use this value on Rx, when creating matching TIR.
1134 	 */
1135 	if (!priv->sh->tdn)
1136 		priv->sh->tdn = priv->sh->td->id;
1137 #endif
1138 	MLX5_ASSERT(sh->tx_uar);
1139 	reg_addr = mlx5_os_get_devx_uar_reg_addr(sh->tx_uar);
1140 	MLX5_ASSERT(reg_addr);
1141 	txq_ctrl->bf_reg = reg_addr;
1142 	txq_ctrl->uar_mmap_offset =
1143 				mlx5_os_get_devx_uar_mmap_offset(sh->tx_uar);
1144 	txq_uar_init(txq_ctrl);
1145 	dev->data->tx_queue_state[idx] = RTE_ETH_QUEUE_STATE_STARTED;
1146 	return 0;
1147 error:
1148 	ret = rte_errno; /* Save rte_errno before cleanup. */
1149 	mlx5_txq_release_devx_resources(txq_obj);
1150 	rte_errno = ret; /* Restore rte_errno. */
1151 	return -rte_errno;
1152 #endif
1153 }
1154 
1155 /**
1156  * Release an Tx DevX queue object.
1157  *
1158  * @param txq_obj
1159  *   DevX Tx queue object.
1160  */
1161 void
1162 mlx5_txq_devx_obj_release(struct mlx5_txq_obj *txq_obj)
1163 {
1164 	MLX5_ASSERT(txq_obj);
1165 	if (txq_obj->txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN) {
1166 		if (txq_obj->tis)
1167 			claim_zero(mlx5_devx_cmd_destroy(txq_obj->tis));
1168 #if defined(HAVE_MLX5DV_DEVX_UAR_OFFSET) || !defined(HAVE_INFINIBAND_VERBS_H)
1169 	} else {
1170 		mlx5_txq_release_devx_resources(txq_obj);
1171 #endif
1172 	}
1173 }
1174 
1175 struct mlx5_obj_ops devx_obj_ops = {
1176 	.rxq_obj_modify_vlan_strip = mlx5_rxq_obj_modify_rq_vlan_strip,
1177 	.rxq_obj_new = mlx5_rxq_devx_obj_new,
1178 	.rxq_event_get = mlx5_rx_devx_get_event,
1179 	.rxq_obj_modify = mlx5_devx_modify_rq,
1180 	.rxq_obj_release = mlx5_rxq_devx_obj_release,
1181 	.ind_table_new = mlx5_devx_ind_table_new,
1182 	.ind_table_modify = mlx5_devx_ind_table_modify,
1183 	.ind_table_destroy = mlx5_devx_ind_table_destroy,
1184 	.hrxq_new = mlx5_devx_hrxq_new,
1185 	.hrxq_destroy = mlx5_devx_tir_destroy,
1186 	.hrxq_modify = mlx5_devx_hrxq_modify,
1187 	.drop_action_create = mlx5_devx_drop_action_create,
1188 	.drop_action_destroy = mlx5_devx_drop_action_destroy,
1189 	.txq_obj_new = mlx5_txq_devx_obj_new,
1190 	.txq_obj_modify = mlx5_devx_modify_sq,
1191 	.txq_obj_release = mlx5_txq_devx_obj_release,
1192 	.lb_dummy_queue_create = NULL,
1193 	.lb_dummy_queue_release = NULL,
1194 };
1195