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WIP FPC-III support
[linux/fpc-iii.git] / drivers / infiniband / hw / mlx5 / qp.c
blob0cb7cc642d87d6179dd87c1d66eb4aed48dc89df
1 /*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #include <linux/module.h>
34 #include <rdma/ib_umem.h>
35 #include <rdma/ib_cache.h>
36 #include <rdma/ib_user_verbs.h>
37 #include <rdma/rdma_counter.h>
38 #include <linux/mlx5/fs.h>
39 #include "mlx5_ib.h"
40 #include "ib_rep.h"
41 #include "counters.h"
42 #include "cmd.h"
43 #include "qp.h"
44 #include "wr.h"
45
46 enum {
47 MLX5_IB_ACK_REQ_FREQ = 8,
48 };
49
50 enum {
51 MLX5_IB_DEFAULT_SCHED_QUEUE = 0x83,
52 MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
53 MLX5_IB_LINK_TYPE_IB = 0,
54 MLX5_IB_LINK_TYPE_ETH = 1
55 };
56
57 enum raw_qp_set_mask_map {
58 MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID = 1UL << 0,
59 MLX5_RAW_QP_RATE_LIMIT = 1UL << 1,
60 };
61
62 struct mlx5_modify_raw_qp_param {
63 u16 operation;
64
65 u32 set_mask; /* raw_qp_set_mask_map */
66
67 struct mlx5_rate_limit rl;
68
69 u8 rq_q_ctr_id;
70 u16 port;
71 };
72
73 static void get_cqs(enum ib_qp_type qp_type,
74 struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
75 struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq);
76
77 static int is_qp0(enum ib_qp_type qp_type)
78 {
79 return qp_type == IB_QPT_SMI;
80 }
81
82 static int is_sqp(enum ib_qp_type qp_type)
83 {
84 return is_qp0(qp_type) || is_qp1(qp_type);
85 }
86
87 /**
88 * mlx5_ib_read_user_wqe_common() - Copy a WQE (or part of) from user WQ
89 * to kernel buffer
90 *
91 * @umem: User space memory where the WQ is
92 * @buffer: buffer to copy to
93 * @buflen: buffer length
94 * @wqe_index: index of WQE to copy from
95 * @wq_offset: offset to start of WQ
96 * @wq_wqe_cnt: number of WQEs in WQ
97 * @wq_wqe_shift: log2 of WQE size
98 * @bcnt: number of bytes to copy
99 * @bytes_copied: number of bytes to copy (return value)
100 *
101 * Copies from start of WQE bcnt or less bytes.
102 * Does not gurantee to copy the entire WQE.
103 *
104 * Return: zero on success, or an error code.
105 */
106 static int mlx5_ib_read_user_wqe_common(struct ib_umem *umem, void *buffer,
107 size_t buflen, int wqe_index,
108 int wq_offset, int wq_wqe_cnt,
109 int wq_wqe_shift, int bcnt,
110 size_t *bytes_copied)
111 {
112 size_t offset = wq_offset + ((wqe_index % wq_wqe_cnt) << wq_wqe_shift);
113 size_t wq_end = wq_offset + (wq_wqe_cnt << wq_wqe_shift);
114 size_t copy_length;
115 int ret;
116
117 /* don't copy more than requested, more than buffer length or
118 * beyond WQ end
119 */
120 copy_length = min_t(u32, buflen, wq_end - offset);
121 copy_length = min_t(u32, copy_length, bcnt);
122
123 ret = ib_umem_copy_from(buffer, umem, offset, copy_length);
124 if (ret)
125 return ret;
126
127 if (!ret && bytes_copied)
128 *bytes_copied = copy_length;
129
130 return 0;
131 }
132
133 static int mlx5_ib_read_kernel_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index,
134 void *buffer, size_t buflen, size_t *bc)
135 {
136 struct mlx5_wqe_ctrl_seg *ctrl;
137 size_t bytes_copied = 0;
138 size_t wqe_length;
139 void *p;
140 int ds;
141
142 wqe_index = wqe_index & qp->sq.fbc.sz_m1;
143
144 /* read the control segment first */
145 p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, wqe_index);
146 ctrl = p;
147 ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
148 wqe_length = ds * MLX5_WQE_DS_UNITS;
149
150 /* read rest of WQE if it spreads over more than one stride */
151 while (bytes_copied < wqe_length) {
152 size_t copy_length =
153 min_t(size_t, buflen - bytes_copied, MLX5_SEND_WQE_BB);
154
155 if (!copy_length)
156 break;
157
158 memcpy(buffer + bytes_copied, p, copy_length);
159 bytes_copied += copy_length;
160
161 wqe_index = (wqe_index + 1) & qp->sq.fbc.sz_m1;
162 p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, wqe_index);
163 }
164 *bc = bytes_copied;
165 return 0;
166 }
167
168 static int mlx5_ib_read_user_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index,
169 void *buffer, size_t buflen, size_t *bc)
170 {
171 struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
172 struct ib_umem *umem = base->ubuffer.umem;
173 struct mlx5_ib_wq *wq = &qp->sq;
174 struct mlx5_wqe_ctrl_seg *ctrl;
175 size_t bytes_copied;
176 size_t bytes_copied2;
177 size_t wqe_length;
178 int ret;
179 int ds;
180
181 /* at first read as much as possible */
182 ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index,
183 wq->offset, wq->wqe_cnt,
184 wq->wqe_shift, buflen,
185 &bytes_copied);
186 if (ret)
187 return ret;
188
189 /* we need at least control segment size to proceed */
190 if (bytes_copied < sizeof(*ctrl))
191 return -EINVAL;
192
193 ctrl = buffer;
194 ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
195 wqe_length = ds * MLX5_WQE_DS_UNITS;
196
197 /* if we copied enough then we are done */
198 if (bytes_copied >= wqe_length) {
199 *bc = bytes_copied;
200 return 0;
201 }
202
203 /* otherwise this a wrapped around wqe
204 * so read the remaining bytes starting
205 * from wqe_index 0
206 */
207 ret = mlx5_ib_read_user_wqe_common(umem, buffer + bytes_copied,
208 buflen - bytes_copied, 0, wq->offset,
209 wq->wqe_cnt, wq->wqe_shift,
210 wqe_length - bytes_copied,
211 &bytes_copied2);
212
213 if (ret)
214 return ret;
215 *bc = bytes_copied + bytes_copied2;
216 return 0;
217 }
218
219 int mlx5_ib_read_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer,
220 size_t buflen, size_t *bc)
221 {
222 struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
223 struct ib_umem *umem = base->ubuffer.umem;
224
225 if (buflen < sizeof(struct mlx5_wqe_ctrl_seg))
226 return -EINVAL;
227
228 if (!umem)
229 return mlx5_ib_read_kernel_wqe_sq(qp, wqe_index, buffer,
230 buflen, bc);
231
232 return mlx5_ib_read_user_wqe_sq(qp, wqe_index, buffer, buflen, bc);
233 }
234
235 static int mlx5_ib_read_user_wqe_rq(struct mlx5_ib_qp *qp, int wqe_index,
236 void *buffer, size_t buflen, size_t *bc)
237 {
238 struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
239 struct ib_umem *umem = base->ubuffer.umem;
240 struct mlx5_ib_wq *wq = &qp->rq;
241 size_t bytes_copied;
242 int ret;
243
244 ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index,
245 wq->offset, wq->wqe_cnt,
246 wq->wqe_shift, buflen,
247 &bytes_copied);
248
249 if (ret)
250 return ret;
251 *bc = bytes_copied;
252 return 0;
253 }
254
255 int mlx5_ib_read_wqe_rq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer,
256 size_t buflen, size_t *bc)
257 {
258 struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
259 struct ib_umem *umem = base->ubuffer.umem;
260 struct mlx5_ib_wq *wq = &qp->rq;
261 size_t wqe_size = 1 << wq->wqe_shift;
262
263 if (buflen < wqe_size)
264 return -EINVAL;
265
266 if (!umem)
267 return -EOPNOTSUPP;
268
269 return mlx5_ib_read_user_wqe_rq(qp, wqe_index, buffer, buflen, bc);
270 }
271
272 static int mlx5_ib_read_user_wqe_srq(struct mlx5_ib_srq *srq, int wqe_index,
273 void *buffer, size_t buflen, size_t *bc)
274 {
275 struct ib_umem *umem = srq->umem;
276 size_t bytes_copied;
277 int ret;
278
279 ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index, 0,
280 srq->msrq.max, srq->msrq.wqe_shift,
281 buflen, &bytes_copied);
282
283 if (ret)
284 return ret;
285 *bc = bytes_copied;
286 return 0;
287 }
288
289 int mlx5_ib_read_wqe_srq(struct mlx5_ib_srq *srq, int wqe_index, void *buffer,
290 size_t buflen, size_t *bc)
291 {
292 struct ib_umem *umem = srq->umem;
293 size_t wqe_size = 1 << srq->msrq.wqe_shift;
294
295 if (buflen < wqe_size)
296 return -EINVAL;
297
298 if (!umem)
299 return -EOPNOTSUPP;
300
301 return mlx5_ib_read_user_wqe_srq(srq, wqe_index, buffer, buflen, bc);
302 }
303
304 static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
305 {
306 struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
307 struct ib_event event;
308
309 if (type == MLX5_EVENT_TYPE_PATH_MIG) {
310 /* This event is only valid for trans_qps */
311 to_mibqp(qp)->port = to_mibqp(qp)->trans_qp.alt_port;
312 }
313
314 if (ibqp->event_handler) {
315 event.device = ibqp->device;
316 event.element.qp = ibqp;
317 switch (type) {
318 case MLX5_EVENT_TYPE_PATH_MIG:
319 event.event = IB_EVENT_PATH_MIG;
320 break;
321 case MLX5_EVENT_TYPE_COMM_EST:
322 event.event = IB_EVENT_COMM_EST;
323 break;
324 case MLX5_EVENT_TYPE_SQ_DRAINED:
325 event.event = IB_EVENT_SQ_DRAINED;
326 break;
327 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
328 event.event = IB_EVENT_QP_LAST_WQE_REACHED;
329 break;
330 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
331 event.event = IB_EVENT_QP_FATAL;
332 break;
333 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
334 event.event = IB_EVENT_PATH_MIG_ERR;
335 break;
336 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
337 event.event = IB_EVENT_QP_REQ_ERR;
338 break;
339 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
340 event.event = IB_EVENT_QP_ACCESS_ERR;
341 break;
342 default:
343 pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
344 return;
345 }
346
347 ibqp->event_handler(&event, ibqp->qp_context);
348 }
349 }
350
351 static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
352 int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
353 {
354 int wqe_size;
355 int wq_size;
356
357 /* Sanity check RQ size before proceeding */
358 if (cap->max_recv_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)))
359 return -EINVAL;
360
361 if (!has_rq) {
362 qp->rq.max_gs = 0;
363 qp->rq.wqe_cnt = 0;
364 qp->rq.wqe_shift = 0;
365 cap->max_recv_wr = 0;
366 cap->max_recv_sge = 0;
367 } else {
368 int wq_sig = !!(qp->flags_en & MLX5_QP_FLAG_SIGNATURE);
369
370 if (ucmd) {
371 qp->rq.wqe_cnt = ucmd->rq_wqe_count;
372 if (ucmd->rq_wqe_shift > BITS_PER_BYTE * sizeof(ucmd->rq_wqe_shift))
373 return -EINVAL;
374 qp->rq.wqe_shift = ucmd->rq_wqe_shift;
375 if ((1 << qp->rq.wqe_shift) /
376 sizeof(struct mlx5_wqe_data_seg) <
377 wq_sig)
378 return -EINVAL;
379 qp->rq.max_gs =
380 (1 << qp->rq.wqe_shift) /
381 sizeof(struct mlx5_wqe_data_seg) -
382 wq_sig;
383 qp->rq.max_post = qp->rq.wqe_cnt;
384 } else {
385 wqe_size =
386 wq_sig ? sizeof(struct mlx5_wqe_signature_seg) :
387 0;
388 wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
389 wqe_size = roundup_pow_of_two(wqe_size);
390 wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
391 wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
392 qp->rq.wqe_cnt = wq_size / wqe_size;
393 if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq)) {
394 mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
395 wqe_size,
396 MLX5_CAP_GEN(dev->mdev,
397 max_wqe_sz_rq));
398 return -EINVAL;
399 }
400 qp->rq.wqe_shift = ilog2(wqe_size);
401 qp->rq.max_gs =
402 (1 << qp->rq.wqe_shift) /
403 sizeof(struct mlx5_wqe_data_seg) -
404 wq_sig;
405 qp->rq.max_post = qp->rq.wqe_cnt;
406 }
407 }
408
409 return 0;
410 }
411
412 static int sq_overhead(struct ib_qp_init_attr *attr)
413 {
414 int size = 0;
415
416 switch (attr->qp_type) {
417 case IB_QPT_XRC_INI:
418 size += sizeof(struct mlx5_wqe_xrc_seg);
419 fallthrough;
420 case IB_QPT_RC:
421 size += sizeof(struct mlx5_wqe_ctrl_seg) +
422 max(sizeof(struct mlx5_wqe_atomic_seg) +
423 sizeof(struct mlx5_wqe_raddr_seg),
424 sizeof(struct mlx5_wqe_umr_ctrl_seg) +
425 sizeof(struct mlx5_mkey_seg) +
426 MLX5_IB_SQ_UMR_INLINE_THRESHOLD /
427 MLX5_IB_UMR_OCTOWORD);
428 break;
429
430 case IB_QPT_XRC_TGT:
431 return 0;
432
433 case IB_QPT_UC:
434 size += sizeof(struct mlx5_wqe_ctrl_seg) +
435 max(sizeof(struct mlx5_wqe_raddr_seg),
436 sizeof(struct mlx5_wqe_umr_ctrl_seg) +
437 sizeof(struct mlx5_mkey_seg));
438 break;
439
440 case IB_QPT_UD:
441 if (attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)
442 size += sizeof(struct mlx5_wqe_eth_pad) +
443 sizeof(struct mlx5_wqe_eth_seg);
444 fallthrough;
445 case IB_QPT_SMI:
446 case MLX5_IB_QPT_HW_GSI:
447 size += sizeof(struct mlx5_wqe_ctrl_seg) +
448 sizeof(struct mlx5_wqe_datagram_seg);
449 break;
450
451 case MLX5_IB_QPT_REG_UMR:
452 size += sizeof(struct mlx5_wqe_ctrl_seg) +
453 sizeof(struct mlx5_wqe_umr_ctrl_seg) +
454 sizeof(struct mlx5_mkey_seg);
455 break;
456
457 default:
458 return -EINVAL;
459 }
460
461 return size;
462 }
463
464 static int calc_send_wqe(struct ib_qp_init_attr *attr)
465 {
466 int inl_size = 0;
467 int size;
468
469 size = sq_overhead(attr);
470 if (size < 0)
471 return size;
472
473 if (attr->cap.max_inline_data) {
474 inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
475 attr->cap.max_inline_data;
476 }
477
478 size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
479 if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN &&
480 ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) < MLX5_SIG_WQE_SIZE)
481 return MLX5_SIG_WQE_SIZE;
482 else
483 return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
484 }
485
486 static int get_send_sge(struct ib_qp_init_attr *attr, int wqe_size)
487 {
488 int max_sge;
489
490 if (attr->qp_type == IB_QPT_RC)
491 max_sge = (min_t(int, wqe_size, 512) -
492 sizeof(struct mlx5_wqe_ctrl_seg) -
493 sizeof(struct mlx5_wqe_raddr_seg)) /
494 sizeof(struct mlx5_wqe_data_seg);
495 else if (attr->qp_type == IB_QPT_XRC_INI)
496 max_sge = (min_t(int, wqe_size, 512) -
497 sizeof(struct mlx5_wqe_ctrl_seg) -
498 sizeof(struct mlx5_wqe_xrc_seg) -
499 sizeof(struct mlx5_wqe_raddr_seg)) /
500 sizeof(struct mlx5_wqe_data_seg);
501 else
502 max_sge = (wqe_size - sq_overhead(attr)) /
503 sizeof(struct mlx5_wqe_data_seg);
504
505 return min_t(int, max_sge, wqe_size - sq_overhead(attr) /
506 sizeof(struct mlx5_wqe_data_seg));
507 }
508
509 static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
510 struct mlx5_ib_qp *qp)
511 {
512 int wqe_size;
513 int wq_size;
514
515 if (!attr->cap.max_send_wr)
516 return 0;
517
518 wqe_size = calc_send_wqe(attr);
519 mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
520 if (wqe_size < 0)
521 return wqe_size;
522
523 if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
524 mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n",
525 wqe_size, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
526 return -EINVAL;
527 }
528
529 qp->max_inline_data = wqe_size - sq_overhead(attr) -
530 sizeof(struct mlx5_wqe_inline_seg);
531 attr->cap.max_inline_data = qp->max_inline_data;
532
533 wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
534 qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
535 if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
536 mlx5_ib_dbg(dev, "send queue size (%d * %d / %d -> %d) exceeds limits(%d)\n",
537 attr->cap.max_send_wr, wqe_size, MLX5_SEND_WQE_BB,
538 qp->sq.wqe_cnt,
539 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
540 return -ENOMEM;
541 }
542 qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
543 qp->sq.max_gs = get_send_sge(attr, wqe_size);
544 if (qp->sq.max_gs < attr->cap.max_send_sge)
545 return -ENOMEM;
546
547 attr->cap.max_send_sge = qp->sq.max_gs;
548 qp->sq.max_post = wq_size / wqe_size;
549 attr->cap.max_send_wr = qp->sq.max_post;
550
551 return wq_size;
552 }
553
554 static int set_user_buf_size(struct mlx5_ib_dev *dev,
555 struct mlx5_ib_qp *qp,
556 struct mlx5_ib_create_qp *ucmd,
557 struct mlx5_ib_qp_base *base,
558 struct ib_qp_init_attr *attr)
559 {
560 int desc_sz = 1 << qp->sq.wqe_shift;
561
562 if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
563 mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
564 desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
565 return -EINVAL;
566 }
567
568 if (ucmd->sq_wqe_count && !is_power_of_2(ucmd->sq_wqe_count)) {
569 mlx5_ib_warn(dev, "sq_wqe_count %d is not a power of two\n",
570 ucmd->sq_wqe_count);
571 return -EINVAL;
572 }
573
574 qp->sq.wqe_cnt = ucmd->sq_wqe_count;
575
576 if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
577 mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
578 qp->sq.wqe_cnt,
579 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
580 return -EINVAL;
581 }
582
583 if (attr->qp_type == IB_QPT_RAW_PACKET ||
584 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
585 base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
586 qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
587 } else {
588 base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
589 (qp->sq.wqe_cnt << 6);
590 }
591
592 return 0;
593 }
594
595 static int qp_has_rq(struct ib_qp_init_attr *attr)
596 {
597 if (attr->qp_type == IB_QPT_XRC_INI ||
598 attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
599 attr->qp_type == MLX5_IB_QPT_REG_UMR ||
600 !attr->cap.max_recv_wr)
601 return 0;
602
603 return 1;
604 }
605
606 enum {
607 /* this is the first blue flame register in the array of bfregs assigned
608 * to a processes. Since we do not use it for blue flame but rather
609 * regular 64 bit doorbells, we do not need a lock for maintaiing
610 * "odd/even" order
611 */
612 NUM_NON_BLUE_FLAME_BFREGS = 1,
613 };
614
615 static int max_bfregs(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi)
616 {
617 return get_num_static_uars(dev, bfregi) * MLX5_NON_FP_BFREGS_PER_UAR;
618 }
619
620 static int num_med_bfreg(struct mlx5_ib_dev *dev,
621 struct mlx5_bfreg_info *bfregi)
622 {
623 int n;
624
625 n = max_bfregs(dev, bfregi) - bfregi->num_low_latency_bfregs -
626 NUM_NON_BLUE_FLAME_BFREGS;
627
628 return n >= 0 ? n : 0;
629 }
630
631 static int first_med_bfreg(struct mlx5_ib_dev *dev,
632 struct mlx5_bfreg_info *bfregi)
633 {
634 return num_med_bfreg(dev, bfregi) ? 1 : -ENOMEM;
635 }
636
637 static int first_hi_bfreg(struct mlx5_ib_dev *dev,
638 struct mlx5_bfreg_info *bfregi)
639 {
640 int med;
641
642 med = num_med_bfreg(dev, bfregi);
643 return ++med;
644 }
645
646 static int alloc_high_class_bfreg(struct mlx5_ib_dev *dev,
647 struct mlx5_bfreg_info *bfregi)
648 {
649 int i;
650
651 for (i = first_hi_bfreg(dev, bfregi); i < max_bfregs(dev, bfregi); i++) {
652 if (!bfregi->count[i]) {
653 bfregi->count[i]++;
654 return i;
655 }
656 }
657
658 return -ENOMEM;
659 }
660
661 static int alloc_med_class_bfreg(struct mlx5_ib_dev *dev,
662 struct mlx5_bfreg_info *bfregi)
663 {
664 int minidx = first_med_bfreg(dev, bfregi);
665 int i;
666
667 if (minidx < 0)
668 return minidx;
669
670 for (i = minidx; i < first_hi_bfreg(dev, bfregi); i++) {
671 if (bfregi->count[i] < bfregi->count[minidx])
672 minidx = i;
673 if (!bfregi->count[minidx])
674 break;
675 }
676
677 bfregi->count[minidx]++;
678 return minidx;
679 }
680
681 static int alloc_bfreg(struct mlx5_ib_dev *dev,
682 struct mlx5_bfreg_info *bfregi)
683 {
684 int bfregn = -ENOMEM;
685
686 if (bfregi->lib_uar_dyn)
687 return -EINVAL;
688
689 mutex_lock(&bfregi->lock);
690 if (bfregi->ver >= 2) {
691 bfregn = alloc_high_class_bfreg(dev, bfregi);
692 if (bfregn < 0)
693 bfregn = alloc_med_class_bfreg(dev, bfregi);
694 }
695
696 if (bfregn < 0) {
697 BUILD_BUG_ON(NUM_NON_BLUE_FLAME_BFREGS != 1);
698 bfregn = 0;
699 bfregi->count[bfregn]++;
700 }
701 mutex_unlock(&bfregi->lock);
702
703 return bfregn;
704 }
705
706 void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int bfregn)
707 {
708 mutex_lock(&bfregi->lock);
709 bfregi->count[bfregn]--;
710 mutex_unlock(&bfregi->lock);
711 }
712
713 static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
714 {
715 switch (state) {
716 case IB_QPS_RESET: return MLX5_QP_STATE_RST;
717 case IB_QPS_INIT: return MLX5_QP_STATE_INIT;
718 case IB_QPS_RTR: return MLX5_QP_STATE_RTR;
719 case IB_QPS_RTS: return MLX5_QP_STATE_RTS;
720 case IB_QPS_SQD: return MLX5_QP_STATE_SQD;
721 case IB_QPS_SQE: return MLX5_QP_STATE_SQER;
722 case IB_QPS_ERR: return MLX5_QP_STATE_ERR;
723 default: return -1;
724 }
725 }
726
727 static int to_mlx5_st(enum ib_qp_type type)
728 {
729 switch (type) {
730 case IB_QPT_RC: return MLX5_QP_ST_RC;
731 case IB_QPT_UC: return MLX5_QP_ST_UC;
732 case IB_QPT_UD: return MLX5_QP_ST_UD;
733 case MLX5_IB_QPT_REG_UMR: return MLX5_QP_ST_REG_UMR;
734 case IB_QPT_XRC_INI:
735 case IB_QPT_XRC_TGT: return MLX5_QP_ST_XRC;
736 case IB_QPT_SMI: return MLX5_QP_ST_QP0;
737 case MLX5_IB_QPT_HW_GSI: return MLX5_QP_ST_QP1;
738 case MLX5_IB_QPT_DCI: return MLX5_QP_ST_DCI;
739 case IB_QPT_RAW_PACKET: return MLX5_QP_ST_RAW_ETHERTYPE;
740 default: return -EINVAL;
741 }
742 }
743
744 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq,
745 struct mlx5_ib_cq *recv_cq);
746 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq,
747 struct mlx5_ib_cq *recv_cq);
748
749 int bfregn_to_uar_index(struct mlx5_ib_dev *dev,
750 struct mlx5_bfreg_info *bfregi, u32 bfregn,
751 bool dyn_bfreg)
752 {
753 unsigned int bfregs_per_sys_page;
754 u32 index_of_sys_page;
755 u32 offset;
756
757 if (bfregi->lib_uar_dyn)
758 return -EINVAL;
759
760 bfregs_per_sys_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k) *
761 MLX5_NON_FP_BFREGS_PER_UAR;
762 index_of_sys_page = bfregn / bfregs_per_sys_page;
763
764 if (dyn_bfreg) {
765 index_of_sys_page += bfregi->num_static_sys_pages;
766
767 if (index_of_sys_page >= bfregi->num_sys_pages)
768 return -EINVAL;
769
770 if (bfregn > bfregi->num_dyn_bfregs ||
771 bfregi->sys_pages[index_of_sys_page] == MLX5_IB_INVALID_UAR_INDEX) {
772 mlx5_ib_dbg(dev, "Invalid dynamic uar index\n");
773 return -EINVAL;
774 }
775 }
776
777 offset = bfregn % bfregs_per_sys_page / MLX5_NON_FP_BFREGS_PER_UAR;
778 return bfregi->sys_pages[index_of_sys_page] + offset;
779 }
780
781 static void destroy_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
782 struct mlx5_ib_rwq *rwq, struct ib_udata *udata)
783 {
784 struct mlx5_ib_ucontext *context =
785 rdma_udata_to_drv_context(
786 udata,
787 struct mlx5_ib_ucontext,
788 ibucontext);
789
790 if (rwq->create_flags & MLX5_IB_WQ_FLAGS_DELAY_DROP)
791 atomic_dec(&dev->delay_drop.rqs_cnt);
792
793 mlx5_ib_db_unmap_user(context, &rwq->db);
794 ib_umem_release(rwq->umem);
795 }
796
797 static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
798 struct ib_udata *udata, struct mlx5_ib_rwq *rwq,
799 struct mlx5_ib_create_wq *ucmd)
800 {
801 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
802 udata, struct mlx5_ib_ucontext, ibucontext);
803 unsigned long page_size = 0;
804 u32 offset = 0;
805 int err;
806
807 if (!ucmd->buf_addr)
808 return -EINVAL;
809
810 rwq->umem = ib_umem_get(&dev->ib_dev, ucmd->buf_addr, rwq->buf_size, 0);
811 if (IS_ERR(rwq->umem)) {
812 mlx5_ib_dbg(dev, "umem_get failed\n");
813 err = PTR_ERR(rwq->umem);
814 return err;
815 }
816
817 page_size = mlx5_umem_find_best_quantized_pgoff(
818 rwq->umem, wq, log_wq_pg_sz, MLX5_ADAPTER_PAGE_SHIFT,
819 page_offset, 64, &rwq->rq_page_offset);
820 if (!page_size) {
821 mlx5_ib_warn(dev, "bad offset\n");
822 err = -EINVAL;
823 goto err_umem;
824 }
825
826 rwq->rq_num_pas = ib_umem_num_dma_blocks(rwq->umem, page_size);
827 rwq->page_shift = order_base_2(page_size);
828 rwq->log_page_size = rwq->page_shift - MLX5_ADAPTER_PAGE_SHIFT;
829 rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE);
830
831 mlx5_ib_dbg(
832 dev,
833 "addr 0x%llx, size %zd, npages %zu, page_size %ld, ncont %d, offset %d\n",
834 (unsigned long long)ucmd->buf_addr, rwq->buf_size,
835 ib_umem_num_pages(rwq->umem), page_size, rwq->rq_num_pas,
836 offset);
837
838 err = mlx5_ib_db_map_user(ucontext, udata, ucmd->db_addr, &rwq->db);
839 if (err) {
840 mlx5_ib_dbg(dev, "map failed\n");
841 goto err_umem;
842 }
843
844 return 0;
845
846 err_umem:
847 ib_umem_release(rwq->umem);
848 return err;
849 }
850
851 static int adjust_bfregn(struct mlx5_ib_dev *dev,
852 struct mlx5_bfreg_info *bfregi, int bfregn)
853 {
854 return bfregn / MLX5_NON_FP_BFREGS_PER_UAR * MLX5_BFREGS_PER_UAR +
855 bfregn % MLX5_NON_FP_BFREGS_PER_UAR;
856 }
857
858 static int _create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
859 struct mlx5_ib_qp *qp, struct ib_udata *udata,
860 struct ib_qp_init_attr *attr, u32 **in,
861 struct mlx5_ib_create_qp_resp *resp, int *inlen,
862 struct mlx5_ib_qp_base *base,
863 struct mlx5_ib_create_qp *ucmd)
864 {
865 struct mlx5_ib_ucontext *context;
866 struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer;
867 unsigned int page_offset_quantized = 0;
868 unsigned long page_size = 0;
869 int uar_index = 0;
870 int bfregn;
871 int ncont = 0;
872 __be64 *pas;
873 void *qpc;
874 int err;
875 u16 uid;
876 u32 uar_flags;
877
878 context = rdma_udata_to_drv_context(udata, struct mlx5_ib_ucontext,
879 ibucontext);
880 uar_flags = qp->flags_en &
881 (MLX5_QP_FLAG_UAR_PAGE_INDEX | MLX5_QP_FLAG_BFREG_INDEX);
882 switch (uar_flags) {
883 case MLX5_QP_FLAG_UAR_PAGE_INDEX:
884 uar_index = ucmd->bfreg_index;
885 bfregn = MLX5_IB_INVALID_BFREG;
886 break;
887 case MLX5_QP_FLAG_BFREG_INDEX:
888 uar_index = bfregn_to_uar_index(dev, &context->bfregi,
889 ucmd->bfreg_index, true);
890 if (uar_index < 0)
891 return uar_index;
892 bfregn = MLX5_IB_INVALID_BFREG;
893 break;
894 case 0:
895 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL)
896 return -EINVAL;
897 bfregn = alloc_bfreg(dev, &context->bfregi);
898 if (bfregn < 0)
899 return bfregn;
900 break;
901 default:
902 return -EINVAL;
903 }
904
905 mlx5_ib_dbg(dev, "bfregn 0x%x, uar_index 0x%x\n", bfregn, uar_index);
906 if (bfregn != MLX5_IB_INVALID_BFREG)
907 uar_index = bfregn_to_uar_index(dev, &context->bfregi, bfregn,
908 false);
909
910 qp->rq.offset = 0;
911 qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
912 qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
913
914 err = set_user_buf_size(dev, qp, ucmd, base, attr);
915 if (err)
916 goto err_bfreg;
917
918 if (ucmd->buf_addr && ubuffer->buf_size) {
919 ubuffer->buf_addr = ucmd->buf_addr;
920 ubuffer->umem = ib_umem_get(&dev->ib_dev, ubuffer->buf_addr,
921 ubuffer->buf_size, 0);
922 if (IS_ERR(ubuffer->umem)) {
923 err = PTR_ERR(ubuffer->umem);
924 goto err_bfreg;
925 }
926 page_size = mlx5_umem_find_best_quantized_pgoff(
927 ubuffer->umem, qpc, log_page_size,
928 MLX5_ADAPTER_PAGE_SHIFT, page_offset, 64,
929 &page_offset_quantized);
930 if (!page_size) {
931 err = -EINVAL;
932 goto err_umem;
933 }
934 ncont = ib_umem_num_dma_blocks(ubuffer->umem, page_size);
935 } else {
936 ubuffer->umem = NULL;
937 }
938
939 *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
940 MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * ncont;
941 *in = kvzalloc(*inlen, GFP_KERNEL);
942 if (!*in) {
943 err = -ENOMEM;
944 goto err_umem;
945 }
946
947 uid = (attr->qp_type != IB_QPT_XRC_INI) ? to_mpd(pd)->uid : 0;
948 MLX5_SET(create_qp_in, *in, uid, uid);
949 qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
950 pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas);
951 if (ubuffer->umem) {
952 mlx5_ib_populate_pas(ubuffer->umem, page_size, pas, 0);
953 MLX5_SET(qpc, qpc, log_page_size,
954 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT);
955 MLX5_SET(qpc, qpc, page_offset, page_offset_quantized);
956 }
957 MLX5_SET(qpc, qpc, uar_page, uar_index);
958 if (bfregn != MLX5_IB_INVALID_BFREG)
959 resp->bfreg_index = adjust_bfregn(dev, &context->bfregi, bfregn);
960 else
961 resp->bfreg_index = MLX5_IB_INVALID_BFREG;
962 qp->bfregn = bfregn;
963
964 err = mlx5_ib_db_map_user(context, udata, ucmd->db_addr, &qp->db);
965 if (err) {
966 mlx5_ib_dbg(dev, "map failed\n");
967 goto err_free;
968 }
969
970 return 0;
971
972 err_free:
973 kvfree(*in);
974
975 err_umem:
976 ib_umem_release(ubuffer->umem);
977
978 err_bfreg:
979 if (bfregn != MLX5_IB_INVALID_BFREG)
980 mlx5_ib_free_bfreg(dev, &context->bfregi, bfregn);
981 return err;
982 }
983
984 static void destroy_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
985 struct mlx5_ib_qp_base *base, struct ib_udata *udata)
986 {
987 struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context(
988 udata, struct mlx5_ib_ucontext, ibucontext);
989
990 if (udata) {
991 /* User QP */
992 mlx5_ib_db_unmap_user(context, &qp->db);
993 ib_umem_release(base->ubuffer.umem);
994
995 /*
996 * Free only the BFREGs which are handled by the kernel.
997 * BFREGs of UARs allocated dynamically are handled by user.
998 */
999 if (qp->bfregn != MLX5_IB_INVALID_BFREG)
1000 mlx5_ib_free_bfreg(dev, &context->bfregi, qp->bfregn);
1001 return;
1002 }
1003
1004 /* Kernel QP */
1005 kvfree(qp->sq.wqe_head);
1006 kvfree(qp->sq.w_list);
1007 kvfree(qp->sq.wrid);
1008 kvfree(qp->sq.wr_data);
1009 kvfree(qp->rq.wrid);
1010 if (qp->db.db)
1011 mlx5_db_free(dev->mdev, &qp->db);
1012 if (qp->buf.frags)
1013 mlx5_frag_buf_free(dev->mdev, &qp->buf);
1014 }
1015
1016 static int _create_kernel_qp(struct mlx5_ib_dev *dev,
1017 struct ib_qp_init_attr *init_attr,
1018 struct mlx5_ib_qp *qp, u32 **in, int *inlen,
1019 struct mlx5_ib_qp_base *base)
1020 {
1021 int uar_index;
1022 void *qpc;
1023 int err;
1024
1025 if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
1026 qp->bf.bfreg = &dev->fp_bfreg;
1027 else if (qp->flags & MLX5_IB_QP_CREATE_WC_TEST)
1028 qp->bf.bfreg = &dev->wc_bfreg;
1029 else
1030 qp->bf.bfreg = &dev->bfreg;
1031
1032 /* We need to divide by two since each register is comprised of
1033 * two buffers of identical size, namely odd and even
1034 */
1035 qp->bf.buf_size = (1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size)) / 2;
1036 uar_index = qp->bf.bfreg->index;
1037
1038 err = calc_sq_size(dev, init_attr, qp);
1039 if (err < 0) {
1040 mlx5_ib_dbg(dev, "err %d\n", err);
1041 return err;
1042 }
1043
1044 qp->rq.offset = 0;
1045 qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
1046 base->ubuffer.buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
1047
1048 err = mlx5_frag_buf_alloc_node(dev->mdev, base->ubuffer.buf_size,
1049 &qp->buf, dev->mdev->priv.numa_node);
1050 if (err) {
1051 mlx5_ib_dbg(dev, "err %d\n", err);
1052 return err;
1053 }
1054
1055 if (qp->rq.wqe_cnt)
1056 mlx5_init_fbc(qp->buf.frags, qp->rq.wqe_shift,
1057 ilog2(qp->rq.wqe_cnt), &qp->rq.fbc);
1058
1059 if (qp->sq.wqe_cnt) {
1060 int sq_strides_offset = (qp->sq.offset & (PAGE_SIZE - 1)) /
1061 MLX5_SEND_WQE_BB;
1062 mlx5_init_fbc_offset(qp->buf.frags +
1063 (qp->sq.offset / PAGE_SIZE),
1064 ilog2(MLX5_SEND_WQE_BB),
1065 ilog2(qp->sq.wqe_cnt),
1066 sq_strides_offset, &qp->sq.fbc);
1067
1068 qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
1069 }
1070
1071 *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
1072 MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * qp->buf.npages;
1073 *in = kvzalloc(*inlen, GFP_KERNEL);
1074 if (!*in) {
1075 err = -ENOMEM;
1076 goto err_buf;
1077 }
1078
1079 qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
1080 MLX5_SET(qpc, qpc, uar_page, uar_index);
1081 MLX5_SET(qpc, qpc, log_page_size, qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1082
1083 /* Set "fast registration enabled" for all kernel QPs */
1084 MLX5_SET(qpc, qpc, fre, 1);
1085 MLX5_SET(qpc, qpc, rlky, 1);
1086
1087 if (qp->flags & MLX5_IB_QP_CREATE_SQPN_QP1)
1088 MLX5_SET(qpc, qpc, deth_sqpn, 1);
1089
1090 mlx5_fill_page_frag_array(&qp->buf,
1091 (__be64 *)MLX5_ADDR_OF(create_qp_in,
1092 *in, pas));
1093
1094 err = mlx5_db_alloc(dev->mdev, &qp->db);
1095 if (err) {
1096 mlx5_ib_dbg(dev, "err %d\n", err);
1097 goto err_free;
1098 }
1099
1100 qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt,
1101 sizeof(*qp->sq.wrid), GFP_KERNEL);
1102 qp->sq.wr_data = kvmalloc_array(qp->sq.wqe_cnt,
1103 sizeof(*qp->sq.wr_data), GFP_KERNEL);
1104 qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt,
1105 sizeof(*qp->rq.wrid), GFP_KERNEL);
1106 qp->sq.w_list = kvmalloc_array(qp->sq.wqe_cnt,
1107 sizeof(*qp->sq.w_list), GFP_KERNEL);
1108 qp->sq.wqe_head = kvmalloc_array(qp->sq.wqe_cnt,
1109 sizeof(*qp->sq.wqe_head), GFP_KERNEL);
1110
1111 if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
1112 !qp->sq.w_list || !qp->sq.wqe_head) {
1113 err = -ENOMEM;
1114 goto err_wrid;
1115 }
1116
1117 return 0;
1118
1119 err_wrid:
1120 kvfree(qp->sq.wqe_head);
1121 kvfree(qp->sq.w_list);
1122 kvfree(qp->sq.wrid);
1123 kvfree(qp->sq.wr_data);
1124 kvfree(qp->rq.wrid);
1125 mlx5_db_free(dev->mdev, &qp->db);
1126
1127 err_free:
1128 kvfree(*in);
1129
1130 err_buf:
1131 mlx5_frag_buf_free(dev->mdev, &qp->buf);
1132 return err;
1133 }
1134
1135 static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
1136 {
1137 if (attr->srq || (qp->type == IB_QPT_XRC_TGT) ||
1138 (qp->type == MLX5_IB_QPT_DCI) || (qp->type == IB_QPT_XRC_INI))
1139 return MLX5_SRQ_RQ;
1140 else if (!qp->has_rq)
1141 return MLX5_ZERO_LEN_RQ;
1142
1143 return MLX5_NON_ZERO_RQ;
1144 }
1145
1146 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1147 struct mlx5_ib_qp *qp,
1148 struct mlx5_ib_sq *sq, u32 tdn,
1149 struct ib_pd *pd)
1150 {
1151 u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {};
1152 void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1153
1154 MLX5_SET(create_tis_in, in, uid, to_mpd(pd)->uid);
1155 MLX5_SET(tisc, tisc, transport_domain, tdn);
1156 if (qp->flags & IB_QP_CREATE_SOURCE_QPN)
1157 MLX5_SET(tisc, tisc, underlay_qpn, qp->underlay_qpn);
1158
1159 return mlx5_core_create_tis(dev->mdev, in, &sq->tisn);
1160 }
1161
1162 static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1163 struct mlx5_ib_sq *sq, struct ib_pd *pd)
1164 {
1165 mlx5_cmd_destroy_tis(dev->mdev, sq->tisn, to_mpd(pd)->uid);
1166 }
1167
1168 static void destroy_flow_rule_vport_sq(struct mlx5_ib_sq *sq)
1169 {
1170 if (sq->flow_rule)
1171 mlx5_del_flow_rules(sq->flow_rule);
1172 sq->flow_rule = NULL;
1173 }
1174
1175 static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1176 struct ib_udata *udata,
1177 struct mlx5_ib_sq *sq, void *qpin,
1178 struct ib_pd *pd)
1179 {
1180 struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer;
1181 __be64 *pas;
1182 void *in;
1183 void *sqc;
1184 void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1185 void *wq;
1186 int inlen;
1187 int err;
1188 unsigned int page_offset_quantized;
1189 unsigned long page_size;
1190
1191 sq->ubuffer.umem = ib_umem_get(&dev->ib_dev, ubuffer->buf_addr,
1192 ubuffer->buf_size, 0);
1193 if (IS_ERR(sq->ubuffer.umem))
1194 return PTR_ERR(sq->ubuffer.umem);
1195 page_size = mlx5_umem_find_best_quantized_pgoff(
1196 ubuffer->umem, wq, log_wq_pg_sz, MLX5_ADAPTER_PAGE_SHIFT,
1197 page_offset, 64, &page_offset_quantized);
1198 if (!page_size) {
1199 err = -EINVAL;
1200 goto err_umem;
1201 }
1202
1203 inlen = MLX5_ST_SZ_BYTES(create_sq_in) +
1204 sizeof(u64) *
1205 ib_umem_num_dma_blocks(sq->ubuffer.umem, page_size);
1206 in = kvzalloc(inlen, GFP_KERNEL);
1207 if (!in) {
1208 err = -ENOMEM;
1209 goto err_umem;
1210 }
1211
1212 MLX5_SET(create_sq_in, in, uid, to_mpd(pd)->uid);
1213 sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
1214 MLX5_SET(sqc, sqc, flush_in_error_en, 1);
1215 if (MLX5_CAP_ETH(dev->mdev, multi_pkt_send_wqe))
1216 MLX5_SET(sqc, sqc, allow_multi_pkt_send_wqe, 1);
1217 MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
1218 MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
1219 MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
1220 MLX5_SET(sqc, sqc, tis_lst_sz, 1);
1221 MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
1222 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
1223 MLX5_CAP_ETH(dev->mdev, swp))
1224 MLX5_SET(sqc, sqc, allow_swp, 1);
1225
1226 wq = MLX5_ADDR_OF(sqc, sqc, wq);
1227 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1228 MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1229 MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page));
1230 MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1231 MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1232 MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size));
1233 MLX5_SET(wq, wq, log_wq_pg_sz,
1234 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT);
1235 MLX5_SET(wq, wq, page_offset, page_offset_quantized);
1236
1237 pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1238 mlx5_ib_populate_pas(sq->ubuffer.umem, page_size, pas, 0);
1239
1240 err = mlx5_core_create_sq_tracked(dev, in, inlen, &sq->base.mqp);
1241
1242 kvfree(in);
1243
1244 if (err)
1245 goto err_umem;
1246
1247 return 0;
1248
1249 err_umem:
1250 ib_umem_release(sq->ubuffer.umem);
1251 sq->ubuffer.umem = NULL;
1252
1253 return err;
1254 }
1255
1256 static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1257 struct mlx5_ib_sq *sq)
1258 {
1259 destroy_flow_rule_vport_sq(sq);
1260 mlx5_core_destroy_sq_tracked(dev, &sq->base.mqp);
1261 ib_umem_release(sq->ubuffer.umem);
1262 }
1263
1264 static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1265 struct mlx5_ib_rq *rq, void *qpin,
1266 struct ib_pd *pd)
1267 {
1268 struct mlx5_ib_qp *mqp = rq->base.container_mibqp;
1269 __be64 *pas;
1270 void *in;
1271 void *rqc;
1272 void *wq;
1273 void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1274 struct ib_umem *umem = rq->base.ubuffer.umem;
1275 unsigned int page_offset_quantized;
1276 unsigned long page_size = 0;
1277 size_t inlen;
1278 int err;
1279
1280 page_size = mlx5_umem_find_best_quantized_pgoff(umem, wq, log_wq_pg_sz,
1281 MLX5_ADAPTER_PAGE_SHIFT,
1282 page_offset, 64,
1283 &page_offset_quantized);
1284 if (!page_size)
1285 return -EINVAL;
1286
1287 inlen = MLX5_ST_SZ_BYTES(create_rq_in) +
1288 sizeof(u64) * ib_umem_num_dma_blocks(umem, page_size);
1289 in = kvzalloc(inlen, GFP_KERNEL);
1290 if (!in)
1291 return -ENOMEM;
1292
1293 MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
1294 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
1295 if (!(rq->flags & MLX5_IB_RQ_CVLAN_STRIPPING))
1296 MLX5_SET(rqc, rqc, vsd, 1);
1297 MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
1298 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
1299 MLX5_SET(rqc, rqc, flush_in_error_en, 1);
1300 MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));
1301 MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));
1302
1303 if (mqp->flags & IB_QP_CREATE_SCATTER_FCS)
1304 MLX5_SET(rqc, rqc, scatter_fcs, 1);
1305
1306 wq = MLX5_ADDR_OF(rqc, rqc, wq);
1307 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1308 if (rq->flags & MLX5_IB_RQ_PCI_WRITE_END_PADDING)
1309 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
1310 MLX5_SET(wq, wq, page_offset, page_offset_quantized);
1311 MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1312 MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1313 MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4);
1314 MLX5_SET(wq, wq, log_wq_pg_sz,
1315 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT);
1316 MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size));
1317
1318 pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1319 mlx5_ib_populate_pas(umem, page_size, pas, 0);
1320
1321 err = mlx5_core_create_rq_tracked(dev, in, inlen, &rq->base.mqp);
1322
1323 kvfree(in);
1324
1325 return err;
1326 }
1327
1328 static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1329 struct mlx5_ib_rq *rq)
1330 {
1331 mlx5_core_destroy_rq_tracked(dev, &rq->base.mqp);
1332 }
1333
1334 static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1335 struct mlx5_ib_rq *rq,
1336 u32 qp_flags_en,
1337 struct ib_pd *pd)
1338 {
1339 if (qp_flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1340 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
1341 mlx5_ib_disable_lb(dev, false, true);
1342 mlx5_cmd_destroy_tir(dev->mdev, rq->tirn, to_mpd(pd)->uid);
1343 }
1344
1345 static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1346 struct mlx5_ib_rq *rq, u32 tdn,
1347 u32 *qp_flags_en, struct ib_pd *pd,
1348 u32 *out)
1349 {
1350 u8 lb_flag = 0;
1351 u32 *in;
1352 void *tirc;
1353 int inlen;
1354 int err;
1355
1356 inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1357 in = kvzalloc(inlen, GFP_KERNEL);
1358 if (!in)
1359 return -ENOMEM;
1360
1361 MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
1362 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1363 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
1364 MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn);
1365 MLX5_SET(tirc, tirc, transport_domain, tdn);
1366 if (*qp_flags_en & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1367 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1368
1369 if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC)
1370 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1371
1372 if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)
1373 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
1374
1375 if (dev->is_rep) {
1376 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1377 *qp_flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
1378 }
1379
1380 MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
1381 MLX5_SET(create_tir_in, in, opcode, MLX5_CMD_OP_CREATE_TIR);
1382 err = mlx5_cmd_exec_inout(dev->mdev, create_tir, in, out);
1383 rq->tirn = MLX5_GET(create_tir_out, out, tirn);
1384 if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
1385 err = mlx5_ib_enable_lb(dev, false, true);
1386
1387 if (err)
1388 destroy_raw_packet_qp_tir(dev, rq, 0, pd);
1389 }
1390 kvfree(in);
1391
1392 return err;
1393 }
1394
1395 static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1396 u32 *in, size_t inlen,
1397 struct ib_pd *pd,
1398 struct ib_udata *udata,
1399 struct mlx5_ib_create_qp_resp *resp)
1400 {
1401 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1402 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1403 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1404 struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
1405 udata, struct mlx5_ib_ucontext, ibucontext);
1406 int err;
1407 u32 tdn = mucontext->tdn;
1408 u16 uid = to_mpd(pd)->uid;
1409 u32 out[MLX5_ST_SZ_DW(create_tir_out)] = {};
1410
1411 if (!qp->sq.wqe_cnt && !qp->rq.wqe_cnt)
1412 return -EINVAL;
1413 if (qp->sq.wqe_cnt) {
1414 err = create_raw_packet_qp_tis(dev, qp, sq, tdn, pd);
1415 if (err)
1416 return err;
1417
1418 err = create_raw_packet_qp_sq(dev, udata, sq, in, pd);
1419 if (err)
1420 goto err_destroy_tis;
1421
1422 if (uid) {
1423 resp->tisn = sq->tisn;
1424 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TISN;
1425 resp->sqn = sq->base.mqp.qpn;
1426 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_SQN;
1427 }
1428
1429 sq->base.container_mibqp = qp;
1430 sq->base.mqp.event = mlx5_ib_qp_event;
1431 }
1432
1433 if (qp->rq.wqe_cnt) {
1434 rq->base.container_mibqp = qp;
1435
1436 if (qp->flags & IB_QP_CREATE_CVLAN_STRIPPING)
1437 rq->flags |= MLX5_IB_RQ_CVLAN_STRIPPING;
1438 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING)
1439 rq->flags |= MLX5_IB_RQ_PCI_WRITE_END_PADDING;
1440 err = create_raw_packet_qp_rq(dev, rq, in, pd);
1441 if (err)
1442 goto err_destroy_sq;
1443
1444 err = create_raw_packet_qp_tir(dev, rq, tdn, &qp->flags_en, pd,
1445 out);
1446 if (err)
1447 goto err_destroy_rq;
1448
1449 if (uid) {
1450 resp->rqn = rq->base.mqp.qpn;
1451 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_RQN;
1452 resp->tirn = rq->tirn;
1453 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
1454 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) ||
1455 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2)) {
1456 resp->tir_icm_addr = MLX5_GET(
1457 create_tir_out, out, icm_address_31_0);
1458 resp->tir_icm_addr |=
1459 (u64)MLX5_GET(create_tir_out, out,
1460 icm_address_39_32)
1461 << 32;
1462 resp->tir_icm_addr |=
1463 (u64)MLX5_GET(create_tir_out, out,
1464 icm_address_63_40)
1465 << 40;
1466 resp->comp_mask |=
1467 MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
1468 }
1469 }
1470 }
1471
1472 qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
1473 rq->base.mqp.qpn;
1474 return 0;
1475
1476 err_destroy_rq:
1477 destroy_raw_packet_qp_rq(dev, rq);
1478 err_destroy_sq:
1479 if (!qp->sq.wqe_cnt)
1480 return err;
1481 destroy_raw_packet_qp_sq(dev, sq);
1482 err_destroy_tis:
1483 destroy_raw_packet_qp_tis(dev, sq, pd);
1484
1485 return err;
1486 }
1487
1488 static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev,
1489 struct mlx5_ib_qp *qp)
1490 {
1491 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1492 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1493 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1494
1495 if (qp->rq.wqe_cnt) {
1496 destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, qp->ibqp.pd);
1497 destroy_raw_packet_qp_rq(dev, rq);
1498 }
1499
1500 if (qp->sq.wqe_cnt) {
1501 destroy_raw_packet_qp_sq(dev, sq);
1502 destroy_raw_packet_qp_tis(dev, sq, qp->ibqp.pd);
1503 }
1504 }
1505
1506 static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
1507 struct mlx5_ib_raw_packet_qp *raw_packet_qp)
1508 {
1509 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1510 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1511
1512 sq->sq = &qp->sq;
1513 rq->rq = &qp->rq;
1514 sq->doorbell = &qp->db;
1515 rq->doorbell = &qp->db;
1516 }
1517
1518 static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1519 {
1520 if (qp->flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1521 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
1522 mlx5_ib_disable_lb(dev, false, true);
1523 mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
1524 to_mpd(qp->ibqp.pd)->uid);
1525 }
1526
1527 struct mlx5_create_qp_params {
1528 struct ib_udata *udata;
1529 size_t inlen;
1530 size_t outlen;
1531 size_t ucmd_size;
1532 void *ucmd;
1533 u8 is_rss_raw : 1;
1534 struct ib_qp_init_attr *attr;
1535 u32 uidx;
1536 struct mlx5_ib_create_qp_resp resp;
1537 };
1538
1539 static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1540 struct mlx5_ib_qp *qp,
1541 struct mlx5_create_qp_params *params)
1542 {
1543 struct ib_qp_init_attr *init_attr = params->attr;
1544 struct mlx5_ib_create_qp_rss *ucmd = params->ucmd;
1545 struct ib_udata *udata = params->udata;
1546 struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
1547 udata, struct mlx5_ib_ucontext, ibucontext);
1548 int inlen;
1549 int outlen;
1550 int err;
1551 u32 *in;
1552 u32 *out;
1553 void *tirc;
1554 void *hfso;
1555 u32 selected_fields = 0;
1556 u32 outer_l4;
1557 u32 tdn = mucontext->tdn;
1558 u8 lb_flag = 0;
1559
1560 if (ucmd->comp_mask) {
1561 mlx5_ib_dbg(dev, "invalid comp mask\n");
1562 return -EOPNOTSUPP;
1563 }
1564
1565 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_INNER &&
1566 !(ucmd->flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)) {
1567 mlx5_ib_dbg(dev, "Tunnel offloads must be set for inner RSS\n");
1568 return -EOPNOTSUPP;
1569 }
1570
1571 if (dev->is_rep)
1572 qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
1573
1574 if (qp->flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC)
1575 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1576
1577 if (qp->flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)
1578 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
1579
1580 inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1581 outlen = MLX5_ST_SZ_BYTES(create_tir_out);
1582 in = kvzalloc(inlen + outlen, GFP_KERNEL);
1583 if (!in)
1584 return -ENOMEM;
1585
1586 out = in + MLX5_ST_SZ_DW(create_tir_in);
1587 MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
1588 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1589 MLX5_SET(tirc, tirc, disp_type,
1590 MLX5_TIRC_DISP_TYPE_INDIRECT);
1591 MLX5_SET(tirc, tirc, indirect_table,
1592 init_attr->rwq_ind_tbl->ind_tbl_num);
1593 MLX5_SET(tirc, tirc, transport_domain, tdn);
1594
1595 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1596
1597 if (ucmd->flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1598 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1599
1600 MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
1601
1602 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_INNER)
1603 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner);
1604 else
1605 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1606
1607 switch (ucmd->rx_hash_function) {
1608 case MLX5_RX_HASH_FUNC_TOEPLITZ:
1609 {
1610 void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
1611 size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
1612
1613 if (len != ucmd->rx_key_len) {
1614 err = -EINVAL;
1615 goto err;
1616 }
1617
1618 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
1619 memcpy(rss_key, ucmd->rx_hash_key, len);
1620 break;
1621 }
1622 default:
1623 err = -EOPNOTSUPP;
1624 goto err;
1625 }
1626
1627 if (!ucmd->rx_hash_fields_mask) {
1628 /* special case when this TIR serves as steering entry without hashing */
1629 if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
1630 goto create_tir;
1631 err = -EINVAL;
1632 goto err;
1633 }
1634
1635 if (((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1636 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
1637 ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1638 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
1639 err = -EINVAL;
1640 goto err;
1641 }
1642
1643 /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
1644 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1645 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
1646 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1647 MLX5_L3_PROT_TYPE_IPV4);
1648 else if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1649 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1650 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1651 MLX5_L3_PROT_TYPE_IPV6);
1652
1653 outer_l4 = ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1654 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1655 << 0 |
1656 ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1657 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1658 << 1 |
1659 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI) << 2;
1660
1661 /* Check that only one l4 protocol is set */
1662 if (outer_l4 & (outer_l4 - 1)) {
1663 err = -EINVAL;
1664 goto err;
1665 }
1666
1667 /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
1668 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1669 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1670 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1671 MLX5_L4_PROT_TYPE_TCP);
1672 else if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1673 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1674 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1675 MLX5_L4_PROT_TYPE_UDP);
1676
1677 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1678 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
1679 selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
1680
1681 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
1682 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1683 selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
1684
1685 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1686 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
1687 selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
1688
1689 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
1690 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1691 selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
1692
1693 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI)
1694 selected_fields |= MLX5_HASH_FIELD_SEL_IPSEC_SPI;
1695
1696 MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
1697
1698 create_tir:
1699 MLX5_SET(create_tir_in, in, opcode, MLX5_CMD_OP_CREATE_TIR);
1700 err = mlx5_cmd_exec_inout(dev->mdev, create_tir, in, out);
1701
1702 qp->rss_qp.tirn = MLX5_GET(create_tir_out, out, tirn);
1703 if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
1704 err = mlx5_ib_enable_lb(dev, false, true);
1705
1706 if (err)
1707 mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
1708 to_mpd(pd)->uid);
1709 }
1710
1711 if (err)
1712 goto err;
1713
1714 if (mucontext->devx_uid) {
1715 params->resp.comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
1716 params->resp.tirn = qp->rss_qp.tirn;
1717 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) ||
1718 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2)) {
1719 params->resp.tir_icm_addr =
1720 MLX5_GET(create_tir_out, out, icm_address_31_0);
1721 params->resp.tir_icm_addr |=
1722 (u64)MLX5_GET(create_tir_out, out,
1723 icm_address_39_32)
1724 << 32;
1725 params->resp.tir_icm_addr |=
1726 (u64)MLX5_GET(create_tir_out, out,
1727 icm_address_63_40)
1728 << 40;
1729 params->resp.comp_mask |=
1730 MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
1731 }
1732 }
1733
1734 kvfree(in);
1735 /* qpn is reserved for that QP */
1736 qp->trans_qp.base.mqp.qpn = 0;
1737 qp->is_rss = true;
1738 return 0;
1739
1740 err:
1741 kvfree(in);
1742 return err;
1743 }
1744
1745 static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
1746 struct mlx5_ib_qp *qp,
1747 struct ib_qp_init_attr *init_attr,
1748 void *qpc)
1749 {
1750 int scqe_sz;
1751 bool allow_scat_cqe = false;
1752
1753 allow_scat_cqe = qp->flags_en & MLX5_QP_FLAG_ALLOW_SCATTER_CQE;
1754
1755 if (!allow_scat_cqe && init_attr->sq_sig_type != IB_SIGNAL_ALL_WR)
1756 return;
1757
1758 scqe_sz = mlx5_ib_get_cqe_size(init_attr->send_cq);
1759 if (scqe_sz == 128) {
1760 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA64_CQE);
1761 return;
1762 }
1763
1764 if (init_attr->qp_type != MLX5_IB_QPT_DCI ||
1765 MLX5_CAP_GEN(dev->mdev, dc_req_scat_data_cqe))
1766 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE);
1767 }
1768
1769 static int atomic_size_to_mode(int size_mask)
1770 {
1771 /* driver does not support atomic_size > 256B
1772 * and does not know how to translate bigger sizes
1773 */
1774 int supported_size_mask = size_mask & 0x1ff;
1775 int log_max_size;
1776
1777 if (!supported_size_mask)
1778 return -EOPNOTSUPP;
1779
1780 log_max_size = __fls(supported_size_mask);
1781
1782 if (log_max_size > 3)
1783 return log_max_size;
1784
1785 return MLX5_ATOMIC_MODE_8B;
1786 }
1787
1788 static int get_atomic_mode(struct mlx5_ib_dev *dev,
1789 enum ib_qp_type qp_type)
1790 {
1791 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
1792 u8 atomic = MLX5_CAP_GEN(dev->mdev, atomic);
1793 int atomic_mode = -EOPNOTSUPP;
1794 int atomic_size_mask;
1795
1796 if (!atomic)
1797 return -EOPNOTSUPP;
1798
1799 if (qp_type == MLX5_IB_QPT_DCT)
1800 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_dc);
1801 else
1802 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
1803
1804 if ((atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_CMP_SWAP) ||
1805 (atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_FETCH_ADD))
1806 atomic_mode = atomic_size_to_mode(atomic_size_mask);
1807
1808 if (atomic_mode <= 0 &&
1809 (atomic_operations & MLX5_ATOMIC_OPS_CMP_SWAP &&
1810 atomic_operations & MLX5_ATOMIC_OPS_FETCH_ADD))
1811 atomic_mode = MLX5_ATOMIC_MODE_IB_COMP;
1812
1813 return atomic_mode;
1814 }
1815
1816 static int create_xrc_tgt_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1817 struct mlx5_create_qp_params *params)
1818 {
1819 struct mlx5_ib_create_qp *ucmd = params->ucmd;
1820 struct ib_qp_init_attr *attr = params->attr;
1821 u32 uidx = params->uidx;
1822 struct mlx5_ib_resources *devr = &dev->devr;
1823 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {};
1824 int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
1825 struct mlx5_core_dev *mdev = dev->mdev;
1826 struct mlx5_ib_qp_base *base;
1827 unsigned long flags;
1828 void *qpc;
1829 u32 *in;
1830 int err;
1831
1832 if (attr->sq_sig_type == IB_SIGNAL_ALL_WR)
1833 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
1834
1835 in = kvzalloc(inlen, GFP_KERNEL);
1836 if (!in)
1837 return -ENOMEM;
1838
1839 if (MLX5_CAP_GEN(mdev, ece_support) && ucmd)
1840 MLX5_SET(create_qp_in, in, ece, ucmd->ece_options);
1841 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
1842
1843 MLX5_SET(qpc, qpc, st, MLX5_QP_ST_XRC);
1844 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
1845 MLX5_SET(qpc, qpc, pd, to_mpd(devr->p0)->pdn);
1846
1847 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
1848 MLX5_SET(qpc, qpc, block_lb_mc, 1);
1849 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL)
1850 MLX5_SET(qpc, qpc, cd_master, 1);
1851 if (qp->flags & IB_QP_CREATE_MANAGED_SEND)
1852 MLX5_SET(qpc, qpc, cd_slave_send, 1);
1853 if (qp->flags & IB_QP_CREATE_MANAGED_RECV)
1854 MLX5_SET(qpc, qpc, cd_slave_receive, 1);
1855
1856 MLX5_SET(qpc, qpc, rq_type, MLX5_SRQ_RQ);
1857 MLX5_SET(qpc, qpc, no_sq, 1);
1858 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
1859 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(devr->c0)->mcq.cqn);
1860 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
1861 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(attr->xrcd)->xrcdn);
1862 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
1863
1864 /* 0xffffff means we ask to work with cqe version 0 */
1865 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
1866 MLX5_SET(qpc, qpc, user_index, uidx);
1867
1868 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) {
1869 MLX5_SET(qpc, qpc, end_padding_mode,
1870 MLX5_WQ_END_PAD_MODE_ALIGN);
1871 /* Special case to clean flag */
1872 qp->flags &= ~IB_QP_CREATE_PCI_WRITE_END_PADDING;
1873 }
1874
1875 base = &qp->trans_qp.base;
1876 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out);
1877 kvfree(in);
1878 if (err)
1879 return err;
1880
1881 base->container_mibqp = qp;
1882 base->mqp.event = mlx5_ib_qp_event;
1883 if (MLX5_CAP_GEN(mdev, ece_support))
1884 params->resp.ece_options = MLX5_GET(create_qp_out, out, ece);
1885
1886 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
1887 list_add_tail(&qp->qps_list, &dev->qp_list);
1888 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
1889
1890 qp->trans_qp.xrcdn = to_mxrcd(attr->xrcd)->xrcdn;
1891 return 0;
1892 }
1893
1894 static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1895 struct mlx5_ib_qp *qp,
1896 struct mlx5_create_qp_params *params)
1897 {
1898 struct ib_qp_init_attr *init_attr = params->attr;
1899 struct mlx5_ib_create_qp *ucmd = params->ucmd;
1900 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {};
1901 struct ib_udata *udata = params->udata;
1902 u32 uidx = params->uidx;
1903 struct mlx5_ib_resources *devr = &dev->devr;
1904 int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
1905 struct mlx5_core_dev *mdev = dev->mdev;
1906 struct mlx5_ib_cq *send_cq;
1907 struct mlx5_ib_cq *recv_cq;
1908 unsigned long flags;
1909 struct mlx5_ib_qp_base *base;
1910 int mlx5_st;
1911 void *qpc;
1912 u32 *in;
1913 int err;
1914
1915 spin_lock_init(&qp->sq.lock);
1916 spin_lock_init(&qp->rq.lock);
1917
1918 mlx5_st = to_mlx5_st(qp->type);
1919 if (mlx5_st < 0)
1920 return -EINVAL;
1921
1922 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
1923 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
1924
1925 if (qp->flags & IB_QP_CREATE_SOURCE_QPN)
1926 qp->underlay_qpn = init_attr->source_qpn;
1927
1928 base = (init_attr->qp_type == IB_QPT_RAW_PACKET ||
1929 qp->flags & IB_QP_CREATE_SOURCE_QPN) ?
1930 &qp->raw_packet_qp.rq.base :
1931 &qp->trans_qp.base;
1932
1933 qp->has_rq = qp_has_rq(init_attr);
1934 err = set_rq_size(dev, &init_attr->cap, qp->has_rq, qp, ucmd);
1935 if (err) {
1936 mlx5_ib_dbg(dev, "err %d\n", err);
1937 return err;
1938 }
1939
1940 if (ucmd->rq_wqe_shift != qp->rq.wqe_shift ||
1941 ucmd->rq_wqe_count != qp->rq.wqe_cnt)
1942 return -EINVAL;
1943
1944 if (ucmd->sq_wqe_count > (1 << MLX5_CAP_GEN(mdev, log_max_qp_sz)))
1945 return -EINVAL;
1946
1947 err = _create_user_qp(dev, pd, qp, udata, init_attr, &in, &params->resp,
1948 &inlen, base, ucmd);
1949 if (err)
1950 return err;
1951
1952 if (is_sqp(init_attr->qp_type))
1953 qp->port = init_attr->port_num;
1954
1955 if (MLX5_CAP_GEN(mdev, ece_support))
1956 MLX5_SET(create_qp_in, in, ece, ucmd->ece_options);
1957 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
1958
1959 MLX5_SET(qpc, qpc, st, mlx5_st);
1960 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
1961 MLX5_SET(qpc, qpc, pd, to_mpd(pd)->pdn);
1962
1963 if (qp->flags_en & MLX5_QP_FLAG_SIGNATURE)
1964 MLX5_SET(qpc, qpc, wq_signature, 1);
1965
1966 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
1967 MLX5_SET(qpc, qpc, block_lb_mc, 1);
1968
1969 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL)
1970 MLX5_SET(qpc, qpc, cd_master, 1);
1971 if (qp->flags & IB_QP_CREATE_MANAGED_SEND)
1972 MLX5_SET(qpc, qpc, cd_slave_send, 1);
1973 if (qp->flags & IB_QP_CREATE_MANAGED_RECV)
1974 MLX5_SET(qpc, qpc, cd_slave_receive, 1);
1975 if (qp->flags_en & MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE)
1976 MLX5_SET(qpc, qpc, req_e2e_credit_mode, 1);
1977 if ((qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) &&
1978 (init_attr->qp_type == IB_QPT_RC ||
1979 init_attr->qp_type == IB_QPT_UC)) {
1980 int rcqe_sz = mlx5_ib_get_cqe_size(init_attr->recv_cq);
1981
1982 MLX5_SET(qpc, qpc, cs_res,
1983 rcqe_sz == 128 ? MLX5_RES_SCAT_DATA64_CQE :
1984 MLX5_RES_SCAT_DATA32_CQE);
1985 }
1986 if ((qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) &&
1987 (qp->type == MLX5_IB_QPT_DCI || qp->type == IB_QPT_RC))
1988 configure_requester_scat_cqe(dev, qp, init_attr, qpc);
1989
1990 if (qp->rq.wqe_cnt) {
1991 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
1992 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
1993 }
1994
1995 MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr));
1996
1997 if (qp->sq.wqe_cnt) {
1998 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
1999 } else {
2000 MLX5_SET(qpc, qpc, no_sq, 1);
2001 if (init_attr->srq &&
2002 init_attr->srq->srq_type == IB_SRQT_TM)
2003 MLX5_SET(qpc, qpc, offload_type,
2004 MLX5_QPC_OFFLOAD_TYPE_RNDV);
2005 }
2006
2007 /* Set default resources */
2008 switch (init_attr->qp_type) {
2009 case IB_QPT_XRC_INI:
2010 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
2011 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1);
2012 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
2013 break;
2014 default:
2015 if (init_attr->srq) {
2016 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn0);
2017 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(init_attr->srq)->msrq.srqn);
2018 } else {
2019 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1);
2020 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s1)->msrq.srqn);
2021 }
2022 }
2023
2024 if (init_attr->send_cq)
2025 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(init_attr->send_cq)->mcq.cqn);
2026
2027 if (init_attr->recv_cq)
2028 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(init_attr->recv_cq)->mcq.cqn);
2029
2030 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
2031
2032 /* 0xffffff means we ask to work with cqe version 0 */
2033 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
2034 MLX5_SET(qpc, qpc, user_index, uidx);
2035
2036 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING &&
2037 init_attr->qp_type != IB_QPT_RAW_PACKET) {
2038 MLX5_SET(qpc, qpc, end_padding_mode,
2039 MLX5_WQ_END_PAD_MODE_ALIGN);
2040 /* Special case to clean flag */
2041 qp->flags &= ~IB_QP_CREATE_PCI_WRITE_END_PADDING;
2042 }
2043
2044 if (init_attr->qp_type == IB_QPT_RAW_PACKET ||
2045 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
2046 qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd->sq_buf_addr;
2047 raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
2048 err = create_raw_packet_qp(dev, qp, in, inlen, pd, udata,
2049 &params->resp);
2050 } else
2051 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out);
2052
2053 kvfree(in);
2054 if (err)
2055 goto err_create;
2056
2057 base->container_mibqp = qp;
2058 base->mqp.event = mlx5_ib_qp_event;
2059 if (MLX5_CAP_GEN(mdev, ece_support))
2060 params->resp.ece_options = MLX5_GET(create_qp_out, out, ece);
2061
2062 get_cqs(qp->type, init_attr->send_cq, init_attr->recv_cq,
2063 &send_cq, &recv_cq);
2064 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2065 mlx5_ib_lock_cqs(send_cq, recv_cq);
2066 /* Maintain device to QPs access, needed for further handling via reset
2067 * flow
2068 */
2069 list_add_tail(&qp->qps_list, &dev->qp_list);
2070 /* Maintain CQ to QPs access, needed for further handling via reset flow
2071 */
2072 if (send_cq)
2073 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
2074 if (recv_cq)
2075 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
2076 mlx5_ib_unlock_cqs(send_cq, recv_cq);
2077 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2078
2079 return 0;
2080
2081 err_create:
2082 destroy_qp(dev, qp, base, udata);
2083 return err;
2084 }
2085
2086 static int create_kernel_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
2087 struct mlx5_ib_qp *qp,
2088 struct mlx5_create_qp_params *params)
2089 {
2090 struct ib_qp_init_attr *attr = params->attr;
2091 u32 uidx = params->uidx;
2092 struct mlx5_ib_resources *devr = &dev->devr;
2093 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {};
2094 int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
2095 struct mlx5_core_dev *mdev = dev->mdev;
2096 struct mlx5_ib_cq *send_cq;
2097 struct mlx5_ib_cq *recv_cq;
2098 unsigned long flags;
2099 struct mlx5_ib_qp_base *base;
2100 int mlx5_st;
2101 void *qpc;
2102 u32 *in;
2103 int err;
2104
2105 spin_lock_init(&qp->sq.lock);
2106 spin_lock_init(&qp->rq.lock);
2107
2108 mlx5_st = to_mlx5_st(qp->type);
2109 if (mlx5_st < 0)
2110 return -EINVAL;
2111
2112 if (attr->sq_sig_type == IB_SIGNAL_ALL_WR)
2113 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
2114
2115 base = &qp->trans_qp.base;
2116
2117 qp->has_rq = qp_has_rq(attr);
2118 err = set_rq_size(dev, &attr->cap, qp->has_rq, qp, NULL);
2119 if (err) {
2120 mlx5_ib_dbg(dev, "err %d\n", err);
2121 return err;
2122 }
2123
2124 err = _create_kernel_qp(dev, attr, qp, &in, &inlen, base);
2125 if (err)
2126 return err;
2127
2128 if (is_sqp(attr->qp_type))
2129 qp->port = attr->port_num;
2130
2131 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
2132
2133 MLX5_SET(qpc, qpc, st, mlx5_st);
2134 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
2135
2136 if (attr->qp_type != MLX5_IB_QPT_REG_UMR)
2137 MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
2138 else
2139 MLX5_SET(qpc, qpc, latency_sensitive, 1);
2140
2141
2142 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
2143 MLX5_SET(qpc, qpc, block_lb_mc, 1);
2144
2145 if (qp->rq.wqe_cnt) {
2146 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
2147 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
2148 }
2149
2150 MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, attr));
2151
2152 if (qp->sq.wqe_cnt)
2153 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
2154 else
2155 MLX5_SET(qpc, qpc, no_sq, 1);
2156
2157 if (attr->srq) {
2158 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn0);
2159 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn,
2160 to_msrq(attr->srq)->msrq.srqn);
2161 } else {
2162 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1);
2163 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn,
2164 to_msrq(devr->s1)->msrq.srqn);
2165 }
2166
2167 if (attr->send_cq)
2168 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(attr->send_cq)->mcq.cqn);
2169
2170 if (attr->recv_cq)
2171 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(attr->recv_cq)->mcq.cqn);
2172
2173 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
2174
2175 /* 0xffffff means we ask to work with cqe version 0 */
2176 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
2177 MLX5_SET(qpc, qpc, user_index, uidx);
2178
2179 /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
2180 if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO)
2181 MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
2182
2183 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out);
2184 kvfree(in);
2185 if (err)
2186 goto err_create;
2187
2188 base->container_mibqp = qp;
2189 base->mqp.event = mlx5_ib_qp_event;
2190
2191 get_cqs(qp->type, attr->send_cq, attr->recv_cq,
2192 &send_cq, &recv_cq);
2193 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2194 mlx5_ib_lock_cqs(send_cq, recv_cq);
2195 /* Maintain device to QPs access, needed for further handling via reset
2196 * flow
2197 */
2198 list_add_tail(&qp->qps_list, &dev->qp_list);
2199 /* Maintain CQ to QPs access, needed for further handling via reset flow
2200 */
2201 if (send_cq)
2202 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
2203 if (recv_cq)
2204 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
2205 mlx5_ib_unlock_cqs(send_cq, recv_cq);
2206 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2207
2208 return 0;
2209
2210 err_create:
2211 destroy_qp(dev, qp, base, NULL);
2212 return err;
2213 }
2214
2215 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2216 __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
2217 {
2218 if (send_cq) {
2219 if (recv_cq) {
2220 if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
2221 spin_lock(&send_cq->lock);
2222 spin_lock_nested(&recv_cq->lock,
2223 SINGLE_DEPTH_NESTING);
2224 } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2225 spin_lock(&send_cq->lock);
2226 __acquire(&recv_cq->lock);
2227 } else {
2228 spin_lock(&recv_cq->lock);
2229 spin_lock_nested(&send_cq->lock,
2230 SINGLE_DEPTH_NESTING);
2231 }
2232 } else {
2233 spin_lock(&send_cq->lock);
2234 __acquire(&recv_cq->lock);
2235 }
2236 } else if (recv_cq) {
2237 spin_lock(&recv_cq->lock);
2238 __acquire(&send_cq->lock);
2239 } else {
2240 __acquire(&send_cq->lock);
2241 __acquire(&recv_cq->lock);
2242 }
2243 }
2244
2245 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2246 __releases(&send_cq->lock) __releases(&recv_cq->lock)
2247 {
2248 if (send_cq) {
2249 if (recv_cq) {
2250 if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
2251 spin_unlock(&recv_cq->lock);
2252 spin_unlock(&send_cq->lock);
2253 } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2254 __release(&recv_cq->lock);
2255 spin_unlock(&send_cq->lock);
2256 } else {
2257 spin_unlock(&send_cq->lock);
2258 spin_unlock(&recv_cq->lock);
2259 }
2260 } else {
2261 __release(&recv_cq->lock);
2262 spin_unlock(&send_cq->lock);
2263 }
2264 } else if (recv_cq) {
2265 __release(&send_cq->lock);
2266 spin_unlock(&recv_cq->lock);
2267 } else {
2268 __release(&recv_cq->lock);
2269 __release(&send_cq->lock);
2270 }
2271 }
2272
2273 static void get_cqs(enum ib_qp_type qp_type,
2274 struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
2275 struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
2276 {
2277 switch (qp_type) {
2278 case IB_QPT_XRC_TGT:
2279 *send_cq = NULL;
2280 *recv_cq = NULL;
2281 break;
2282 case MLX5_IB_QPT_REG_UMR:
2283 case IB_QPT_XRC_INI:
2284 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2285 *recv_cq = NULL;
2286 break;
2287
2288 case IB_QPT_SMI:
2289 case MLX5_IB_QPT_HW_GSI:
2290 case IB_QPT_RC:
2291 case IB_QPT_UC:
2292 case IB_QPT_UD:
2293 case IB_QPT_RAW_PACKET:
2294 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2295 *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
2296 break;
2297 default:
2298 *send_cq = NULL;
2299 *recv_cq = NULL;
2300 break;
2301 }
2302 }
2303
2304 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2305 const struct mlx5_modify_raw_qp_param *raw_qp_param,
2306 u8 lag_tx_affinity);
2307
2308 static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2309 struct ib_udata *udata)
2310 {
2311 struct mlx5_ib_cq *send_cq, *recv_cq;
2312 struct mlx5_ib_qp_base *base;
2313 unsigned long flags;
2314 int err;
2315
2316 if (qp->is_rss) {
2317 destroy_rss_raw_qp_tir(dev, qp);
2318 return;
2319 }
2320
2321 base = (qp->type == IB_QPT_RAW_PACKET ||
2322 qp->flags & IB_QP_CREATE_SOURCE_QPN) ?
2323 &qp->raw_packet_qp.rq.base :
2324 &qp->trans_qp.base;
2325
2326 if (qp->state != IB_QPS_RESET) {
2327 if (qp->type != IB_QPT_RAW_PACKET &&
2328 !(qp->flags & IB_QP_CREATE_SOURCE_QPN)) {
2329 err = mlx5_core_qp_modify(dev, MLX5_CMD_OP_2RST_QP, 0,
2330 NULL, &base->mqp, NULL);
2331 } else {
2332 struct mlx5_modify_raw_qp_param raw_qp_param = {
2333 .operation = MLX5_CMD_OP_2RST_QP
2334 };
2335
2336 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, 0);
2337 }
2338 if (err)
2339 mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
2340 base->mqp.qpn);
2341 }
2342
2343 get_cqs(qp->type, qp->ibqp.send_cq, qp->ibqp.recv_cq, &send_cq,
2344 &recv_cq);
2345
2346 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2347 mlx5_ib_lock_cqs(send_cq, recv_cq);
2348 /* del from lists under both locks above to protect reset flow paths */
2349 list_del(&qp->qps_list);
2350 if (send_cq)
2351 list_del(&qp->cq_send_list);
2352
2353 if (recv_cq)
2354 list_del(&qp->cq_recv_list);
2355
2356 if (!udata) {
2357 __mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
2358 qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
2359 if (send_cq != recv_cq)
2360 __mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
2361 NULL);
2362 }
2363 mlx5_ib_unlock_cqs(send_cq, recv_cq);
2364 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2365
2366 if (qp->type == IB_QPT_RAW_PACKET ||
2367 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
2368 destroy_raw_packet_qp(dev, qp);
2369 } else {
2370 err = mlx5_core_destroy_qp(dev, &base->mqp);
2371 if (err)
2372 mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n",
2373 base->mqp.qpn);
2374 }
2375
2376 destroy_qp(dev, qp, base, udata);
2377 }
2378
2379 static int create_dct(struct mlx5_ib_dev *dev, struct ib_pd *pd,
2380 struct mlx5_ib_qp *qp,
2381 struct mlx5_create_qp_params *params)
2382 {
2383 struct ib_qp_init_attr *attr = params->attr;
2384 struct mlx5_ib_create_qp *ucmd = params->ucmd;
2385 u32 uidx = params->uidx;
2386 void *dctc;
2387
2388 if (mlx5_lag_is_active(dev->mdev) && !MLX5_CAP_GEN(dev->mdev, lag_dct))
2389 return -EOPNOTSUPP;
2390
2391 qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL);
2392 if (!qp->dct.in)
2393 return -ENOMEM;
2394
2395 MLX5_SET(create_dct_in, qp->dct.in, uid, to_mpd(pd)->uid);
2396 dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
2397 MLX5_SET(dctc, dctc, pd, to_mpd(pd)->pdn);
2398 MLX5_SET(dctc, dctc, srqn_xrqn, to_msrq(attr->srq)->msrq.srqn);
2399 MLX5_SET(dctc, dctc, cqn, to_mcq(attr->recv_cq)->mcq.cqn);
2400 MLX5_SET64(dctc, dctc, dc_access_key, ucmd->access_key);
2401 MLX5_SET(dctc, dctc, user_index, uidx);
2402 if (MLX5_CAP_GEN(dev->mdev, ece_support))
2403 MLX5_SET(dctc, dctc, ece, ucmd->ece_options);
2404
2405 if (qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) {
2406 int rcqe_sz = mlx5_ib_get_cqe_size(attr->recv_cq);
2407
2408 if (rcqe_sz == 128)
2409 MLX5_SET(dctc, dctc, cs_res, MLX5_RES_SCAT_DATA64_CQE);
2410 }
2411
2412 qp->state = IB_QPS_RESET;
2413 rdma_restrack_no_track(&qp->ibqp.res);
2414 return 0;
2415 }
2416
2417 static int check_qp_type(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
2418 enum ib_qp_type *type)
2419 {
2420 if (attr->qp_type == IB_QPT_DRIVER && !MLX5_CAP_GEN(dev->mdev, dct))
2421 goto out;
2422
2423 switch (attr->qp_type) {
2424 case IB_QPT_XRC_TGT:
2425 case IB_QPT_XRC_INI:
2426 if (!MLX5_CAP_GEN(dev->mdev, xrc))
2427 goto out;
2428 fallthrough;
2429 case IB_QPT_RC:
2430 case IB_QPT_UC:
2431 case IB_QPT_SMI:
2432 case MLX5_IB_QPT_HW_GSI:
2433 case IB_QPT_DRIVER:
2434 case IB_QPT_GSI:
2435 if (dev->profile == &raw_eth_profile)
2436 goto out;
2437 fallthrough;
2438 case IB_QPT_RAW_PACKET:
2439 case IB_QPT_UD:
2440 case MLX5_IB_QPT_REG_UMR:
2441 break;
2442 default:
2443 goto out;
2444 }
2445
2446 *type = attr->qp_type;
2447 return 0;
2448
2449 out:
2450 mlx5_ib_dbg(dev, "Unsupported QP type %d\n", attr->qp_type);
2451 return -EOPNOTSUPP;
2452 }
2453
2454 static int check_valid_flow(struct mlx5_ib_dev *dev, struct ib_pd *pd,
2455 struct ib_qp_init_attr *attr,
2456 struct ib_udata *udata)
2457 {
2458 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2459 udata, struct mlx5_ib_ucontext, ibucontext);
2460
2461 if (!udata) {
2462 /* Kernel create_qp callers */
2463 if (attr->rwq_ind_tbl)
2464 return -EOPNOTSUPP;
2465
2466 switch (attr->qp_type) {
2467 case IB_QPT_RAW_PACKET:
2468 case IB_QPT_DRIVER:
2469 return -EOPNOTSUPP;
2470 default:
2471 return 0;
2472 }
2473 }
2474
2475 /* Userspace create_qp callers */
2476 if (attr->qp_type == IB_QPT_RAW_PACKET && !ucontext->cqe_version) {
2477 mlx5_ib_dbg(dev,
2478 "Raw Packet QP is only supported for CQE version > 0\n");
2479 return -EINVAL;
2480 }
2481
2482 if (attr->qp_type != IB_QPT_RAW_PACKET && attr->rwq_ind_tbl) {
2483 mlx5_ib_dbg(dev,
2484 "Wrong QP type %d for the RWQ indirect table\n",
2485 attr->qp_type);
2486 return -EINVAL;
2487 }
2488
2489 /*
2490 * We don't need to see this warning, it means that kernel code
2491 * missing ib_pd. Placed here to catch developer's mistakes.
2492 */
2493 WARN_ONCE(!pd && attr->qp_type != IB_QPT_XRC_TGT,
2494 "There is a missing PD pointer assignment\n");
2495 return 0;
2496 }
2497
2498 static void process_vendor_flag(struct mlx5_ib_dev *dev, int *flags, int flag,
2499 bool cond, struct mlx5_ib_qp *qp)
2500 {
2501 if (!(*flags & flag))
2502 return;
2503
2504 if (cond) {
2505 qp->flags_en |= flag;
2506 *flags &= ~flag;
2507 return;
2508 }
2509
2510 switch (flag) {
2511 case MLX5_QP_FLAG_SCATTER_CQE:
2512 case MLX5_QP_FLAG_ALLOW_SCATTER_CQE:
2513 /*
2514 * We don't return error if these flags were provided,
2515 * and mlx5 doesn't have right capability.
2516 */
2517 *flags &= ~(MLX5_QP_FLAG_SCATTER_CQE |
2518 MLX5_QP_FLAG_ALLOW_SCATTER_CQE);
2519 return;
2520 default:
2521 break;
2522 }
2523 mlx5_ib_dbg(dev, "Vendor create QP flag 0x%X is not supported\n", flag);
2524 }
2525
2526 static int process_vendor_flags(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2527 void *ucmd, struct ib_qp_init_attr *attr)
2528 {
2529 struct mlx5_core_dev *mdev = dev->mdev;
2530 bool cond;
2531 int flags;
2532
2533 if (attr->rwq_ind_tbl)
2534 flags = ((struct mlx5_ib_create_qp_rss *)ucmd)->flags;
2535 else
2536 flags = ((struct mlx5_ib_create_qp *)ucmd)->flags;
2537
2538 switch (flags & (MLX5_QP_FLAG_TYPE_DCT | MLX5_QP_FLAG_TYPE_DCI)) {
2539 case MLX5_QP_FLAG_TYPE_DCI:
2540 qp->type = MLX5_IB_QPT_DCI;
2541 break;
2542 case MLX5_QP_FLAG_TYPE_DCT:
2543 qp->type = MLX5_IB_QPT_DCT;
2544 break;
2545 default:
2546 if (qp->type != IB_QPT_DRIVER)
2547 break;
2548 /*
2549 * It is IB_QPT_DRIVER and or no subtype or
2550 * wrong subtype were provided.
2551 */
2552 return -EINVAL;
2553 }
2554
2555 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TYPE_DCI, true, qp);
2556 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TYPE_DCT, true, qp);
2557
2558 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_SIGNATURE, true, qp);
2559 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_SCATTER_CQE,
2560 MLX5_CAP_GEN(mdev, sctr_data_cqe), qp);
2561 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_ALLOW_SCATTER_CQE,
2562 MLX5_CAP_GEN(mdev, sctr_data_cqe), qp);
2563
2564 if (qp->type == IB_QPT_RAW_PACKET) {
2565 cond = MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan) ||
2566 MLX5_CAP_ETH(mdev, tunnel_stateless_gre) ||
2567 MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx);
2568 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TUNNEL_OFFLOADS,
2569 cond, qp);
2570 process_vendor_flag(dev, &flags,
2571 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC, true,
2572 qp);
2573 process_vendor_flag(dev, &flags,
2574 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC, true,
2575 qp);
2576 }
2577
2578 if (qp->type == IB_QPT_RC)
2579 process_vendor_flag(dev, &flags,
2580 MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE,
2581 MLX5_CAP_GEN(mdev, qp_packet_based), qp);
2582
2583 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_BFREG_INDEX, true, qp);
2584 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_UAR_PAGE_INDEX, true, qp);
2585
2586 cond = qp->flags_en & ~(MLX5_QP_FLAG_TUNNEL_OFFLOADS |
2587 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
2588 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC);
2589 if (attr->rwq_ind_tbl && cond) {
2590 mlx5_ib_dbg(dev, "RSS RAW QP has unsupported flags 0x%X\n",
2591 cond);
2592 return -EINVAL;
2593 }
2594
2595 if (flags)
2596 mlx5_ib_dbg(dev, "udata has unsupported flags 0x%X\n", flags);
2597
2598 return (flags) ? -EINVAL : 0;
2599 }
2600
2601 static void process_create_flag(struct mlx5_ib_dev *dev, int *flags, int flag,
2602 bool cond, struct mlx5_ib_qp *qp)
2603 {
2604 if (!(*flags & flag))
2605 return;
2606
2607 if (cond) {
2608 qp->flags |= flag;
2609 *flags &= ~flag;
2610 return;
2611 }
2612
2613 if (flag == MLX5_IB_QP_CREATE_WC_TEST) {
2614 /*
2615 * Special case, if condition didn't meet, it won't be error,
2616 * just different in-kernel flow.
2617 */
2618 *flags &= ~MLX5_IB_QP_CREATE_WC_TEST;
2619 return;
2620 }
2621 mlx5_ib_dbg(dev, "Verbs create QP flag 0x%X is not supported\n", flag);
2622 }
2623
2624 static int process_create_flags(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2625 struct ib_qp_init_attr *attr)
2626 {
2627 enum ib_qp_type qp_type = qp->type;
2628 struct mlx5_core_dev *mdev = dev->mdev;
2629 int create_flags = attr->create_flags;
2630 bool cond;
2631
2632 if (qp->type == IB_QPT_UD && dev->profile == &raw_eth_profile)
2633 if (create_flags & ~MLX5_IB_QP_CREATE_WC_TEST)
2634 return -EINVAL;
2635
2636 if (qp_type == MLX5_IB_QPT_DCT)
2637 return (create_flags) ? -EINVAL : 0;
2638
2639 if (qp_type == IB_QPT_RAW_PACKET && attr->rwq_ind_tbl)
2640 return (create_flags) ? -EINVAL : 0;
2641
2642 process_create_flag(dev, &create_flags, IB_QP_CREATE_NETIF_QP,
2643 mlx5_get_flow_namespace(dev->mdev,
2644 MLX5_FLOW_NAMESPACE_BYPASS),
2645 qp);
2646 process_create_flag(dev, &create_flags,
2647 IB_QP_CREATE_INTEGRITY_EN,
2648 MLX5_CAP_GEN(mdev, sho), qp);
2649 process_create_flag(dev, &create_flags,
2650 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK,
2651 MLX5_CAP_GEN(mdev, block_lb_mc), qp);
2652 process_create_flag(dev, &create_flags, IB_QP_CREATE_CROSS_CHANNEL,
2653 MLX5_CAP_GEN(mdev, cd), qp);
2654 process_create_flag(dev, &create_flags, IB_QP_CREATE_MANAGED_SEND,
2655 MLX5_CAP_GEN(mdev, cd), qp);
2656 process_create_flag(dev, &create_flags, IB_QP_CREATE_MANAGED_RECV,
2657 MLX5_CAP_GEN(mdev, cd), qp);
2658
2659 if (qp_type == IB_QPT_UD) {
2660 process_create_flag(dev, &create_flags,
2661 IB_QP_CREATE_IPOIB_UD_LSO,
2662 MLX5_CAP_GEN(mdev, ipoib_basic_offloads),
2663 qp);
2664 cond = MLX5_CAP_GEN(mdev, port_type) == MLX5_CAP_PORT_TYPE_IB;
2665 process_create_flag(dev, &create_flags, IB_QP_CREATE_SOURCE_QPN,
2666 cond, qp);
2667 }
2668
2669 if (qp_type == IB_QPT_RAW_PACKET) {
2670 cond = MLX5_CAP_GEN(mdev, eth_net_offloads) &&
2671 MLX5_CAP_ETH(mdev, scatter_fcs);
2672 process_create_flag(dev, &create_flags,
2673 IB_QP_CREATE_SCATTER_FCS, cond, qp);
2674
2675 cond = MLX5_CAP_GEN(mdev, eth_net_offloads) &&
2676 MLX5_CAP_ETH(mdev, vlan_cap);
2677 process_create_flag(dev, &create_flags,
2678 IB_QP_CREATE_CVLAN_STRIPPING, cond, qp);
2679 }
2680
2681 process_create_flag(dev, &create_flags,
2682 IB_QP_CREATE_PCI_WRITE_END_PADDING,
2683 MLX5_CAP_GEN(mdev, end_pad), qp);
2684
2685 process_create_flag(dev, &create_flags, MLX5_IB_QP_CREATE_WC_TEST,
2686 qp_type != MLX5_IB_QPT_REG_UMR, qp);
2687 process_create_flag(dev, &create_flags, MLX5_IB_QP_CREATE_SQPN_QP1,
2688 true, qp);
2689
2690 if (create_flags) {
2691 mlx5_ib_dbg(dev, "Create QP has unsupported flags 0x%X\n",
2692 create_flags);
2693 return -EOPNOTSUPP;
2694 }
2695 return 0;
2696 }
2697
2698 static int process_udata_size(struct mlx5_ib_dev *dev,
2699 struct mlx5_create_qp_params *params)
2700 {
2701 size_t ucmd = sizeof(struct mlx5_ib_create_qp);
2702 struct ib_udata *udata = params->udata;
2703 size_t outlen = udata->outlen;
2704 size_t inlen = udata->inlen;
2705
2706 params->outlen = min(outlen, sizeof(struct mlx5_ib_create_qp_resp));
2707 params->ucmd_size = ucmd;
2708 if (!params->is_rss_raw) {
2709 /* User has old rdma-core, which doesn't support ECE */
2710 size_t min_inlen =
2711 offsetof(struct mlx5_ib_create_qp, ece_options);
2712
2713 /*
2714 * We will check in check_ucmd_data() that user
2715 * cleared everything after inlen.
2716 */
2717 params->inlen = (inlen < min_inlen) ? 0 : min(inlen, ucmd);
2718 goto out;
2719 }
2720
2721 /* RSS RAW QP */
2722 if (inlen < offsetofend(struct mlx5_ib_create_qp_rss, flags))
2723 return -EINVAL;
2724
2725 if (outlen < offsetofend(struct mlx5_ib_create_qp_resp, bfreg_index))
2726 return -EINVAL;
2727
2728 ucmd = sizeof(struct mlx5_ib_create_qp_rss);
2729 params->ucmd_size = ucmd;
2730 if (inlen > ucmd && !ib_is_udata_cleared(udata, ucmd, inlen - ucmd))
2731 return -EINVAL;
2732
2733 params->inlen = min(ucmd, inlen);
2734 out:
2735 if (!params->inlen)
2736 mlx5_ib_dbg(dev, "udata is too small\n");
2737
2738 return (params->inlen) ? 0 : -EINVAL;
2739 }
2740
2741 static int create_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
2742 struct mlx5_ib_qp *qp,
2743 struct mlx5_create_qp_params *params)
2744 {
2745 int err;
2746
2747 if (params->is_rss_raw) {
2748 err = create_rss_raw_qp_tir(dev, pd, qp, params);
2749 goto out;
2750 }
2751
2752 switch (qp->type) {
2753 case MLX5_IB_QPT_DCT:
2754 err = create_dct(dev, pd, qp, params);
2755 break;
2756 case IB_QPT_XRC_TGT:
2757 err = create_xrc_tgt_qp(dev, qp, params);
2758 break;
2759 case IB_QPT_GSI:
2760 err = mlx5_ib_create_gsi(pd, qp, params->attr);
2761 break;
2762 default:
2763 if (params->udata)
2764 err = create_user_qp(dev, pd, qp, params);
2765 else
2766 err = create_kernel_qp(dev, pd, qp, params);
2767 }
2768
2769 out:
2770 if (err) {
2771 mlx5_ib_err(dev, "Create QP type %d failed\n", qp->type);
2772 return err;
2773 }
2774
2775 if (is_qp0(qp->type))
2776 qp->ibqp.qp_num = 0;
2777 else if (is_qp1(qp->type))
2778 qp->ibqp.qp_num = 1;
2779 else
2780 qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn;
2781
2782 mlx5_ib_dbg(dev,
2783 "QP type %d, ib qpn 0x%X, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x, ece 0x%x\n",
2784 qp->type, qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
2785 params->attr->recv_cq ? to_mcq(params->attr->recv_cq)->mcq.cqn :
2786 -1,
2787 params->attr->send_cq ? to_mcq(params->attr->send_cq)->mcq.cqn :
2788 -1,
2789 params->resp.ece_options);
2790
2791 return 0;
2792 }
2793
2794 static int check_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2795 struct ib_qp_init_attr *attr)
2796 {
2797 int ret = 0;
2798
2799 switch (qp->type) {
2800 case MLX5_IB_QPT_DCT:
2801 ret = (!attr->srq || !attr->recv_cq) ? -EINVAL : 0;
2802 break;
2803 case MLX5_IB_QPT_DCI:
2804 ret = (attr->cap.max_recv_wr || attr->cap.max_recv_sge) ?
2805 -EINVAL :
2806 0;
2807 break;
2808 case IB_QPT_RAW_PACKET:
2809 ret = (attr->rwq_ind_tbl && attr->send_cq) ? -EINVAL : 0;
2810 break;
2811 default:
2812 break;
2813 }
2814
2815 if (ret)
2816 mlx5_ib_dbg(dev, "QP type %d has wrong attributes\n", qp->type);
2817
2818 return ret;
2819 }
2820
2821 static int get_qp_uidx(struct mlx5_ib_qp *qp,
2822 struct mlx5_create_qp_params *params)
2823 {
2824 struct mlx5_ib_create_qp *ucmd = params->ucmd;
2825 struct ib_udata *udata = params->udata;
2826 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2827 udata, struct mlx5_ib_ucontext, ibucontext);
2828
2829 if (params->is_rss_raw)
2830 return 0;
2831
2832 return get_qp_user_index(ucontext, ucmd, sizeof(*ucmd), &params->uidx);
2833 }
2834
2835 static int mlx5_ib_destroy_dct(struct mlx5_ib_qp *mqp)
2836 {
2837 struct mlx5_ib_dev *dev = to_mdev(mqp->ibqp.device);
2838
2839 if (mqp->state == IB_QPS_RTR) {
2840 int err;
2841
2842 err = mlx5_core_destroy_dct(dev, &mqp->dct.mdct);
2843 if (err) {
2844 mlx5_ib_warn(dev, "failed to destroy DCT %d\n", err);
2845 return err;
2846 }
2847 }
2848
2849 kfree(mqp->dct.in);
2850 kfree(mqp);
2851 return 0;
2852 }
2853
2854 static int check_ucmd_data(struct mlx5_ib_dev *dev,
2855 struct mlx5_create_qp_params *params)
2856 {
2857 struct ib_udata *udata = params->udata;
2858 size_t size, last;
2859 int ret;
2860
2861 if (params->is_rss_raw)
2862 /*
2863 * These QPs don't have "reserved" field in their
2864 * create_qp input struct, so their data is always valid.
2865 */
2866 last = sizeof(struct mlx5_ib_create_qp_rss);
2867 else
2868 last = offsetof(struct mlx5_ib_create_qp, reserved);
2869
2870 if (udata->inlen <= last)
2871 return 0;
2872
2873 /*
2874 * User provides different create_qp structures based on the
2875 * flow and we need to know if he cleared memory after our
2876 * struct create_qp ends.
2877 */
2878 size = udata->inlen - last;
2879 ret = ib_is_udata_cleared(params->udata, last, size);
2880 if (!ret)
2881 mlx5_ib_dbg(
2882 dev,
2883 "udata is not cleared, inlen = %zu, ucmd = %zu, last = %zu, size = %zu\n",
2884 udata->inlen, params->ucmd_size, last, size);
2885 return ret ? 0 : -EINVAL;
2886 }
2887
2888 struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attr,
2889 struct ib_udata *udata)
2890 {
2891 struct mlx5_create_qp_params params = {};
2892 struct mlx5_ib_dev *dev;
2893 struct mlx5_ib_qp *qp;
2894 enum ib_qp_type type;
2895 int err;
2896
2897 dev = pd ? to_mdev(pd->device) :
2898 to_mdev(to_mxrcd(attr->xrcd)->ibxrcd.device);
2899
2900 err = check_qp_type(dev, attr, &type);
2901 if (err)
2902 return ERR_PTR(err);
2903
2904 err = check_valid_flow(dev, pd, attr, udata);
2905 if (err)
2906 return ERR_PTR(err);
2907
2908 params.udata = udata;
2909 params.uidx = MLX5_IB_DEFAULT_UIDX;
2910 params.attr = attr;
2911 params.is_rss_raw = !!attr->rwq_ind_tbl;
2912
2913 if (udata) {
2914 err = process_udata_size(dev, &params);
2915 if (err)
2916 return ERR_PTR(err);
2917
2918 err = check_ucmd_data(dev, &params);
2919 if (err)
2920 return ERR_PTR(err);
2921
2922 params.ucmd = kzalloc(params.ucmd_size, GFP_KERNEL);
2923 if (!params.ucmd)
2924 return ERR_PTR(-ENOMEM);
2925
2926 err = ib_copy_from_udata(params.ucmd, udata, params.inlen);
2927 if (err)
2928 goto free_ucmd;
2929 }
2930
2931 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2932 if (!qp) {
2933 err = -ENOMEM;
2934 goto free_ucmd;
2935 }
2936
2937 mutex_init(&qp->mutex);
2938 qp->type = type;
2939 if (udata) {
2940 err = process_vendor_flags(dev, qp, params.ucmd, attr);
2941 if (err)
2942 goto free_qp;
2943
2944 err = get_qp_uidx(qp, &params);
2945 if (err)
2946 goto free_qp;
2947 }
2948 err = process_create_flags(dev, qp, attr);
2949 if (err)
2950 goto free_qp;
2951
2952 err = check_qp_attr(dev, qp, attr);
2953 if (err)
2954 goto free_qp;
2955
2956 err = create_qp(dev, pd, qp, &params);
2957 if (err)
2958 goto free_qp;
2959
2960 kfree(params.ucmd);
2961 params.ucmd = NULL;
2962
2963 if (udata)
2964 /*
2965 * It is safe to copy response for all user create QP flows,
2966 * including MLX5_IB_QPT_DCT, which doesn't need it.
2967 * In that case, resp will be filled with zeros.
2968 */
2969 err = ib_copy_to_udata(udata, &params.resp, params.outlen);
2970 if (err)
2971 goto destroy_qp;
2972
2973 return &qp->ibqp;
2974
2975 destroy_qp:
2976 switch (qp->type) {
2977 case MLX5_IB_QPT_DCT:
2978 mlx5_ib_destroy_dct(qp);
2979 break;
2980 case IB_QPT_GSI:
2981 mlx5_ib_destroy_gsi(qp);
2982 break;
2983 default:
2984 /*
2985 * These lines below are temp solution till QP allocation
2986 * will be moved to be under IB/core responsiblity.
2987 */
2988 qp->ibqp.send_cq = attr->send_cq;
2989 qp->ibqp.recv_cq = attr->recv_cq;
2990 qp->ibqp.pd = pd;
2991 destroy_qp_common(dev, qp, udata);
2992 }
2993
2994 qp = NULL;
2995 free_qp:
2996 kfree(qp);
2997 free_ucmd:
2998 kfree(params.ucmd);
2999 return ERR_PTR(err);
3000 }
3001
3002 int mlx5_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata)
3003 {
3004 struct mlx5_ib_dev *dev = to_mdev(qp->device);
3005 struct mlx5_ib_qp *mqp = to_mqp(qp);
3006
3007 if (unlikely(qp->qp_type == IB_QPT_GSI))
3008 return mlx5_ib_destroy_gsi(mqp);
3009
3010 if (mqp->type == MLX5_IB_QPT_DCT)
3011 return mlx5_ib_destroy_dct(mqp);
3012
3013 destroy_qp_common(dev, mqp, udata);
3014
3015 kfree(mqp);
3016
3017 return 0;
3018 }
3019
3020 static int set_qpc_atomic_flags(struct mlx5_ib_qp *qp,
3021 const struct ib_qp_attr *attr, int attr_mask,
3022 void *qpc)
3023 {
3024 struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device);
3025 u8 dest_rd_atomic;
3026 u32 access_flags;
3027
3028 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
3029 dest_rd_atomic = attr->max_dest_rd_atomic;
3030 else
3031 dest_rd_atomic = qp->trans_qp.resp_depth;
3032
3033 if (attr_mask & IB_QP_ACCESS_FLAGS)
3034 access_flags = attr->qp_access_flags;
3035 else
3036 access_flags = qp->trans_qp.atomic_rd_en;
3037
3038 if (!dest_rd_atomic)
3039 access_flags &= IB_ACCESS_REMOTE_WRITE;
3040
3041 MLX5_SET(qpc, qpc, rre, !!(access_flags & IB_ACCESS_REMOTE_READ));
3042
3043 if (access_flags & IB_ACCESS_REMOTE_ATOMIC) {
3044 int atomic_mode;
3045
3046 atomic_mode = get_atomic_mode(dev, qp->ibqp.qp_type);
3047 if (atomic_mode < 0)
3048 return -EOPNOTSUPP;
3049
3050 MLX5_SET(qpc, qpc, rae, 1);
3051 MLX5_SET(qpc, qpc, atomic_mode, atomic_mode);
3052 }
3053
3054 MLX5_SET(qpc, qpc, rwe, !!(access_flags & IB_ACCESS_REMOTE_WRITE));
3055 return 0;
3056 }
3057
3058 enum {
3059 MLX5_PATH_FLAG_FL = 1 << 0,
3060 MLX5_PATH_FLAG_FREE_AR = 1 << 1,
3061 MLX5_PATH_FLAG_COUNTER = 1 << 2,
3062 };
3063
3064 static int ib_to_mlx5_rate_map(u8 rate)
3065 {
3066 switch (rate) {
3067 case IB_RATE_PORT_CURRENT:
3068 return 0;
3069 case IB_RATE_56_GBPS:
3070 return 1;
3071 case IB_RATE_25_GBPS:
3072 return 2;
3073 case IB_RATE_100_GBPS:
3074 return 3;
3075 case IB_RATE_200_GBPS:
3076 return 4;
3077 case IB_RATE_50_GBPS:
3078 return 5;
3079 default:
3080 return rate + MLX5_STAT_RATE_OFFSET;
3081 }
3082
3083 return 0;
3084 }
3085
3086 static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
3087 {
3088 u32 stat_rate_support;
3089
3090 if (rate == IB_RATE_PORT_CURRENT)
3091 return 0;
3092
3093 if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_600_GBPS)
3094 return -EINVAL;
3095
3096 stat_rate_support = MLX5_CAP_GEN(dev->mdev, stat_rate_support);
3097 while (rate != IB_RATE_PORT_CURRENT &&
3098 !(1 << ib_to_mlx5_rate_map(rate) & stat_rate_support))
3099 --rate;
3100
3101 return ib_to_mlx5_rate_map(rate);
3102 }
3103
3104 static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
3105 struct mlx5_ib_sq *sq, u8 sl,
3106 struct ib_pd *pd)
3107 {
3108 void *in;
3109 void *tisc;
3110 int inlen;
3111 int err;
3112
3113 inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
3114 in = kvzalloc(inlen, GFP_KERNEL);
3115 if (!in)
3116 return -ENOMEM;
3117
3118 MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
3119 MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
3120
3121 tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
3122 MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
3123
3124 err = mlx5_core_modify_tis(dev, sq->tisn, in);
3125
3126 kvfree(in);
3127
3128 return err;
3129 }
3130
3131 static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev,
3132 struct mlx5_ib_sq *sq, u8 tx_affinity,
3133 struct ib_pd *pd)
3134 {
3135 void *in;
3136 void *tisc;
3137 int inlen;
3138 int err;
3139
3140 inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
3141 in = kvzalloc(inlen, GFP_KERNEL);
3142 if (!in)
3143 return -ENOMEM;
3144
3145 MLX5_SET(modify_tis_in, in, bitmask.lag_tx_port_affinity, 1);
3146 MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
3147
3148 tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
3149 MLX5_SET(tisc, tisc, lag_tx_port_affinity, tx_affinity);
3150
3151 err = mlx5_core_modify_tis(dev, sq->tisn, in);
3152
3153 kvfree(in);
3154
3155 return err;
3156 }
3157
3158 static void mlx5_set_path_udp_sport(void *path, const struct rdma_ah_attr *ah,
3159 u32 lqpn, u32 rqpn)
3160
3161 {
3162 u32 fl = ah->grh.flow_label;
3163
3164 if (!fl)
3165 fl = rdma_calc_flow_label(lqpn, rqpn);
3166
3167 MLX5_SET(ads, path, udp_sport, rdma_flow_label_to_udp_sport(fl));
3168 }
3169
3170 static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
3171 const struct rdma_ah_attr *ah, void *path, u8 port,
3172 int attr_mask, u32 path_flags,
3173 const struct ib_qp_attr *attr, bool alt)
3174 {
3175 const struct ib_global_route *grh = rdma_ah_read_grh(ah);
3176 int err;
3177 enum ib_gid_type gid_type;
3178 u8 ah_flags = rdma_ah_get_ah_flags(ah);
3179 u8 sl = rdma_ah_get_sl(ah);
3180
3181 if (attr_mask & IB_QP_PKEY_INDEX)
3182 MLX5_SET(ads, path, pkey_index,
3183 alt ? attr->alt_pkey_index : attr->pkey_index);
3184
3185 if (ah_flags & IB_AH_GRH) {
3186 if (grh->sgid_index >=
3187 dev->mdev->port_caps[port - 1].gid_table_len) {
3188 pr_err("sgid_index (%u) too large. max is %d\n",
3189 grh->sgid_index,
3190 dev->mdev->port_caps[port - 1].gid_table_len);
3191 return -EINVAL;
3192 }
3193 }
3194
3195 if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) {
3196 if (!(ah_flags & IB_AH_GRH))
3197 return -EINVAL;
3198
3199 ether_addr_copy(MLX5_ADDR_OF(ads, path, rmac_47_32),
3200 ah->roce.dmac);
3201 if ((qp->ibqp.qp_type == IB_QPT_RC ||
3202 qp->ibqp.qp_type == IB_QPT_UC ||
3203 qp->ibqp.qp_type == IB_QPT_XRC_INI ||
3204 qp->ibqp.qp_type == IB_QPT_XRC_TGT) &&
3205 (grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) &&
3206 (attr_mask & IB_QP_DEST_QPN))
3207 mlx5_set_path_udp_sport(path, ah,
3208 qp->ibqp.qp_num,
3209 attr->dest_qp_num);
3210 MLX5_SET(ads, path, eth_prio, sl & 0x7);
3211 gid_type = ah->grh.sgid_attr->gid_type;
3212 if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
3213 MLX5_SET(ads, path, dscp, grh->traffic_class >> 2);
3214 } else {
3215 MLX5_SET(ads, path, fl, !!(path_flags & MLX5_PATH_FLAG_FL));
3216 MLX5_SET(ads, path, free_ar,
3217 !!(path_flags & MLX5_PATH_FLAG_FREE_AR));
3218 MLX5_SET(ads, path, rlid, rdma_ah_get_dlid(ah));
3219 MLX5_SET(ads, path, mlid, rdma_ah_get_path_bits(ah));
3220 MLX5_SET(ads, path, grh, !!(ah_flags & IB_AH_GRH));
3221 MLX5_SET(ads, path, sl, sl);
3222 }
3223
3224 if (ah_flags & IB_AH_GRH) {
3225 MLX5_SET(ads, path, src_addr_index, grh->sgid_index);
3226 MLX5_SET(ads, path, hop_limit, grh->hop_limit);
3227 MLX5_SET(ads, path, tclass, grh->traffic_class);
3228 MLX5_SET(ads, path, flow_label, grh->flow_label);
3229 memcpy(MLX5_ADDR_OF(ads, path, rgid_rip), grh->dgid.raw,
3230 sizeof(grh->dgid.raw));
3231 }
3232
3233 err = ib_rate_to_mlx5(dev, rdma_ah_get_static_rate(ah));
3234 if (err < 0)
3235 return err;
3236 MLX5_SET(ads, path, stat_rate, err);
3237 MLX5_SET(ads, path, vhca_port_num, port);
3238
3239 if (attr_mask & IB_QP_TIMEOUT)
3240 MLX5_SET(ads, path, ack_timeout,
3241 alt ? attr->alt_timeout : attr->timeout);
3242
3243 if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
3244 return modify_raw_packet_eth_prio(dev->mdev,
3245 &qp->raw_packet_qp.sq,
3246 sl & 0xf, qp->ibqp.pd);
3247
3248 return 0;
3249 }
3250
3251 static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
3252 [MLX5_QP_STATE_INIT] = {
3253 [MLX5_QP_STATE_INIT] = {
3254 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
3255 MLX5_QP_OPTPAR_RAE |
3256 MLX5_QP_OPTPAR_RWE |
3257 MLX5_QP_OPTPAR_PKEY_INDEX |
3258 MLX5_QP_OPTPAR_PRI_PORT |
3259 MLX5_QP_OPTPAR_LAG_TX_AFF,
3260 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
3261 MLX5_QP_OPTPAR_PKEY_INDEX |
3262 MLX5_QP_OPTPAR_PRI_PORT |
3263 MLX5_QP_OPTPAR_LAG_TX_AFF,
3264 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
3265 MLX5_QP_OPTPAR_Q_KEY |
3266 MLX5_QP_OPTPAR_PRI_PORT,
3267 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE |
3268 MLX5_QP_OPTPAR_RAE |
3269 MLX5_QP_OPTPAR_RWE |
3270 MLX5_QP_OPTPAR_PKEY_INDEX |
3271 MLX5_QP_OPTPAR_PRI_PORT |
3272 MLX5_QP_OPTPAR_LAG_TX_AFF,
3273 },
3274 [MLX5_QP_STATE_RTR] = {
3275 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3276 MLX5_QP_OPTPAR_RRE |
3277 MLX5_QP_OPTPAR_RAE |
3278 MLX5_QP_OPTPAR_RWE |
3279 MLX5_QP_OPTPAR_PKEY_INDEX |
3280 MLX5_QP_OPTPAR_LAG_TX_AFF,
3281 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3282 MLX5_QP_OPTPAR_RWE |
3283 MLX5_QP_OPTPAR_PKEY_INDEX |
3284 MLX5_QP_OPTPAR_LAG_TX_AFF,
3285 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
3286 MLX5_QP_OPTPAR_Q_KEY,
3287 [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX |
3288 MLX5_QP_OPTPAR_Q_KEY,
3289 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3290 MLX5_QP_OPTPAR_RRE |
3291 MLX5_QP_OPTPAR_RAE |
3292 MLX5_QP_OPTPAR_RWE |
3293 MLX5_QP_OPTPAR_PKEY_INDEX |
3294 MLX5_QP_OPTPAR_LAG_TX_AFF,
3295 },
3296 },
3297 [MLX5_QP_STATE_RTR] = {
3298 [MLX5_QP_STATE_RTS] = {
3299 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3300 MLX5_QP_OPTPAR_RRE |
3301 MLX5_QP_OPTPAR_RAE |
3302 MLX5_QP_OPTPAR_RWE |
3303 MLX5_QP_OPTPAR_PM_STATE |
3304 MLX5_QP_OPTPAR_RNR_TIMEOUT,
3305 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3306 MLX5_QP_OPTPAR_RWE |
3307 MLX5_QP_OPTPAR_PM_STATE,
3308 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
3309 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3310 MLX5_QP_OPTPAR_RRE |
3311 MLX5_QP_OPTPAR_RAE |
3312 MLX5_QP_OPTPAR_RWE |
3313 MLX5_QP_OPTPAR_PM_STATE |
3314 MLX5_QP_OPTPAR_RNR_TIMEOUT,
3315 },
3316 },
3317 [MLX5_QP_STATE_RTS] = {
3318 [MLX5_QP_STATE_RTS] = {
3319 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
3320 MLX5_QP_OPTPAR_RAE |
3321 MLX5_QP_OPTPAR_RWE |
3322 MLX5_QP_OPTPAR_RNR_TIMEOUT |
3323 MLX5_QP_OPTPAR_PM_STATE |
3324 MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3325 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
3326 MLX5_QP_OPTPAR_PM_STATE |
3327 MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3328 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY |
3329 MLX5_QP_OPTPAR_SRQN |
3330 MLX5_QP_OPTPAR_CQN_RCV,
3331 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE |
3332 MLX5_QP_OPTPAR_RAE |
3333 MLX5_QP_OPTPAR_RWE |
3334 MLX5_QP_OPTPAR_RNR_TIMEOUT |
3335 MLX5_QP_OPTPAR_PM_STATE |
3336 MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3337 },
3338 },
3339 [MLX5_QP_STATE_SQER] = {
3340 [MLX5_QP_STATE_RTS] = {
3341 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
3342 [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
3343 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE,
3344 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RNR_TIMEOUT |
3345 MLX5_QP_OPTPAR_RWE |
3346 MLX5_QP_OPTPAR_RAE |
3347 MLX5_QP_OPTPAR_RRE,
3348 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RNR_TIMEOUT |
3349 MLX5_QP_OPTPAR_RWE |
3350 MLX5_QP_OPTPAR_RAE |
3351 MLX5_QP_OPTPAR_RRE,
3352 },
3353 },
3354 };
3355
3356 static int ib_nr_to_mlx5_nr(int ib_mask)
3357 {
3358 switch (ib_mask) {
3359 case IB_QP_STATE:
3360 return 0;
3361 case IB_QP_CUR_STATE:
3362 return 0;
3363 case IB_QP_EN_SQD_ASYNC_NOTIFY:
3364 return 0;
3365 case IB_QP_ACCESS_FLAGS:
3366 return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
3367 MLX5_QP_OPTPAR_RAE;
3368 case IB_QP_PKEY_INDEX:
3369 return MLX5_QP_OPTPAR_PKEY_INDEX;
3370 case IB_QP_PORT:
3371 return MLX5_QP_OPTPAR_PRI_PORT;
3372 case IB_QP_QKEY:
3373 return MLX5_QP_OPTPAR_Q_KEY;
3374 case IB_QP_AV:
3375 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
3376 MLX5_QP_OPTPAR_PRI_PORT;
3377 case IB_QP_PATH_MTU:
3378 return 0;
3379 case IB_QP_TIMEOUT:
3380 return MLX5_QP_OPTPAR_ACK_TIMEOUT;
3381 case IB_QP_RETRY_CNT:
3382 return MLX5_QP_OPTPAR_RETRY_COUNT;
3383 case IB_QP_RNR_RETRY:
3384 return MLX5_QP_OPTPAR_RNR_RETRY;
3385 case IB_QP_RQ_PSN:
3386 return 0;
3387 case IB_QP_MAX_QP_RD_ATOMIC:
3388 return MLX5_QP_OPTPAR_SRA_MAX;
3389 case IB_QP_ALT_PATH:
3390 return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
3391 case IB_QP_MIN_RNR_TIMER:
3392 return MLX5_QP_OPTPAR_RNR_TIMEOUT;
3393 case IB_QP_SQ_PSN:
3394 return 0;
3395 case IB_QP_MAX_DEST_RD_ATOMIC:
3396 return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
3397 MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
3398 case IB_QP_PATH_MIG_STATE:
3399 return MLX5_QP_OPTPAR_PM_STATE;
3400 case IB_QP_CAP:
3401 return 0;
3402 case IB_QP_DEST_QPN:
3403 return 0;
3404 }
3405 return 0;
3406 }
3407
3408 static int ib_mask_to_mlx5_opt(int ib_mask)
3409 {
3410 int result = 0;
3411 int i;
3412
3413 for (i = 0; i < 8 * sizeof(int); i++) {
3414 if ((1 << i) & ib_mask)
3415 result |= ib_nr_to_mlx5_nr(1 << i);
3416 }
3417
3418 return result;
3419 }
3420
3421 static int modify_raw_packet_qp_rq(
3422 struct mlx5_ib_dev *dev, struct mlx5_ib_rq *rq, int new_state,
3423 const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
3424 {
3425 void *in;
3426 void *rqc;
3427 int inlen;
3428 int err;
3429
3430 inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
3431 in = kvzalloc(inlen, GFP_KERNEL);
3432 if (!in)
3433 return -ENOMEM;
3434
3435 MLX5_SET(modify_rq_in, in, rq_state, rq->state);
3436 MLX5_SET(modify_rq_in, in, uid, to_mpd(pd)->uid);
3437
3438 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
3439 MLX5_SET(rqc, rqc, state, new_state);
3440
3441 if (raw_qp_param->set_mask & MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID) {
3442 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
3443 MLX5_SET64(modify_rq_in, in, modify_bitmask,
3444 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
3445 MLX5_SET(rqc, rqc, counter_set_id, raw_qp_param->rq_q_ctr_id);
3446 } else
3447 dev_info_once(
3448 &dev->ib_dev.dev,
3449 "RAW PACKET QP counters are not supported on current FW\n");
3450 }
3451
3452 err = mlx5_core_modify_rq(dev->mdev, rq->base.mqp.qpn, in);
3453 if (err)
3454 goto out;
3455
3456 rq->state = new_state;
3457
3458 out:
3459 kvfree(in);
3460 return err;
3461 }
3462
3463 static int modify_raw_packet_qp_sq(
3464 struct mlx5_core_dev *dev, struct mlx5_ib_sq *sq, int new_state,
3465 const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
3466 {
3467 struct mlx5_ib_qp *ibqp = sq->base.container_mibqp;
3468 struct mlx5_rate_limit old_rl = ibqp->rl;
3469 struct mlx5_rate_limit new_rl = old_rl;
3470 bool new_rate_added = false;
3471 u16 rl_index = 0;
3472 void *in;
3473 void *sqc;
3474 int inlen;
3475 int err;
3476
3477 inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
3478 in = kvzalloc(inlen, GFP_KERNEL);
3479 if (!in)
3480 return -ENOMEM;
3481
3482 MLX5_SET(modify_sq_in, in, uid, to_mpd(pd)->uid);
3483 MLX5_SET(modify_sq_in, in, sq_state, sq->state);
3484
3485 sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
3486 MLX5_SET(sqc, sqc, state, new_state);
3487
3488 if (raw_qp_param->set_mask & MLX5_RAW_QP_RATE_LIMIT) {
3489 if (new_state != MLX5_SQC_STATE_RDY)
3490 pr_warn("%s: Rate limit can only be changed when SQ is moving to RDY\n",
3491 __func__);
3492 else
3493 new_rl = raw_qp_param->rl;
3494 }
3495
3496 if (!mlx5_rl_are_equal(&old_rl, &new_rl)) {
3497 if (new_rl.rate) {
3498 err = mlx5_rl_add_rate(dev, &rl_index, &new_rl);
3499 if (err) {
3500 pr_err("Failed configuring rate limit(err %d): \
3501 rate %u, max_burst_sz %u, typical_pkt_sz %u\n",
3502 err, new_rl.rate, new_rl.max_burst_sz,
3503 new_rl.typical_pkt_sz);
3504
3505 goto out;
3506 }
3507 new_rate_added = true;
3508 }
3509
3510 MLX5_SET64(modify_sq_in, in, modify_bitmask, 1);
3511 /* index 0 means no limit */
3512 MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, rl_index);
3513 }
3514
3515 err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in);
3516 if (err) {
3517 /* Remove new rate from table if failed */
3518 if (new_rate_added)
3519 mlx5_rl_remove_rate(dev, &new_rl);
3520 goto out;
3521 }
3522
3523 /* Only remove the old rate after new rate was set */
3524 if ((old_rl.rate && !mlx5_rl_are_equal(&old_rl, &new_rl)) ||
3525 (new_state != MLX5_SQC_STATE_RDY)) {
3526 mlx5_rl_remove_rate(dev, &old_rl);
3527 if (new_state != MLX5_SQC_STATE_RDY)
3528 memset(&new_rl, 0, sizeof(new_rl));
3529 }
3530
3531 ibqp->rl = new_rl;
3532 sq->state = new_state;
3533
3534 out:
3535 kvfree(in);
3536 return err;
3537 }
3538
3539 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
3540 const struct mlx5_modify_raw_qp_param *raw_qp_param,
3541 u8 tx_affinity)
3542 {
3543 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
3544 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
3545 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
3546 int modify_rq = !!qp->rq.wqe_cnt;
3547 int modify_sq = !!qp->sq.wqe_cnt;
3548 int rq_state;
3549 int sq_state;
3550 int err;
3551
3552 switch (raw_qp_param->operation) {
3553 case MLX5_CMD_OP_RST2INIT_QP:
3554 rq_state = MLX5_RQC_STATE_RDY;
3555 sq_state = MLX5_SQC_STATE_RST;
3556 break;
3557 case MLX5_CMD_OP_2ERR_QP:
3558 rq_state = MLX5_RQC_STATE_ERR;
3559 sq_state = MLX5_SQC_STATE_ERR;
3560 break;
3561 case MLX5_CMD_OP_2RST_QP:
3562 rq_state = MLX5_RQC_STATE_RST;
3563 sq_state = MLX5_SQC_STATE_RST;
3564 break;
3565 case MLX5_CMD_OP_RTR2RTS_QP:
3566 case MLX5_CMD_OP_RTS2RTS_QP:
3567 if (raw_qp_param->set_mask & ~MLX5_RAW_QP_RATE_LIMIT)
3568 return -EINVAL;
3569
3570 modify_rq = 0;
3571 sq_state = MLX5_SQC_STATE_RDY;
3572 break;
3573 case MLX5_CMD_OP_INIT2INIT_QP:
3574 case MLX5_CMD_OP_INIT2RTR_QP:
3575 if (raw_qp_param->set_mask)
3576 return -EINVAL;
3577 else
3578 return 0;
3579 default:
3580 WARN_ON(1);
3581 return -EINVAL;
3582 }
3583
3584 if (modify_rq) {
3585 err = modify_raw_packet_qp_rq(dev, rq, rq_state, raw_qp_param,
3586 qp->ibqp.pd);
3587 if (err)
3588 return err;
3589 }
3590
3591 if (modify_sq) {
3592 struct mlx5_flow_handle *flow_rule;
3593
3594 if (tx_affinity) {
3595 err = modify_raw_packet_tx_affinity(dev->mdev, sq,
3596 tx_affinity,
3597 qp->ibqp.pd);
3598 if (err)
3599 return err;
3600 }
3601
3602 flow_rule = create_flow_rule_vport_sq(dev, sq,
3603 raw_qp_param->port);
3604 if (IS_ERR(flow_rule))
3605 return PTR_ERR(flow_rule);
3606
3607 err = modify_raw_packet_qp_sq(dev->mdev, sq, sq_state,
3608 raw_qp_param, qp->ibqp.pd);
3609 if (err) {
3610 if (flow_rule)
3611 mlx5_del_flow_rules(flow_rule);
3612 return err;
3613 }
3614
3615 if (flow_rule) {
3616 destroy_flow_rule_vport_sq(sq);
3617 sq->flow_rule = flow_rule;
3618 }
3619
3620 return err;
3621 }
3622
3623 return 0;
3624 }
3625
3626 static unsigned int get_tx_affinity_rr(struct mlx5_ib_dev *dev,
3627 struct ib_udata *udata)
3628 {
3629 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
3630 udata, struct mlx5_ib_ucontext, ibucontext);
3631 u8 port_num = mlx5_core_native_port_num(dev->mdev) - 1;
3632 atomic_t *tx_port_affinity;
3633
3634 if (ucontext)
3635 tx_port_affinity = &ucontext->tx_port_affinity;
3636 else
3637 tx_port_affinity = &dev->port[port_num].roce.tx_port_affinity;
3638
3639 return (unsigned int)atomic_add_return(1, tx_port_affinity) %
3640 MLX5_MAX_PORTS + 1;
3641 }
3642
3643 static bool qp_supports_affinity(struct mlx5_ib_qp *qp)
3644 {
3645 if ((qp->type == IB_QPT_RC) || (qp->type == IB_QPT_UD) ||
3646 (qp->type == IB_QPT_UC) || (qp->type == IB_QPT_RAW_PACKET) ||
3647 (qp->type == IB_QPT_XRC_INI) || (qp->type == IB_QPT_XRC_TGT) ||
3648 (qp->type == MLX5_IB_QPT_DCI))
3649 return true;
3650 return false;
3651 }
3652
3653 static unsigned int get_tx_affinity(struct ib_qp *qp,
3654 const struct ib_qp_attr *attr,
3655 int attr_mask, u8 init,
3656 struct ib_udata *udata)
3657 {
3658 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
3659 udata, struct mlx5_ib_ucontext, ibucontext);
3660 struct mlx5_ib_dev *dev = to_mdev(qp->device);
3661 struct mlx5_ib_qp *mqp = to_mqp(qp);
3662 struct mlx5_ib_qp_base *qp_base;
3663 unsigned int tx_affinity;
3664
3665 if (!(mlx5_ib_lag_should_assign_affinity(dev) &&
3666 qp_supports_affinity(mqp)))
3667 return 0;
3668
3669 if (mqp->flags & MLX5_IB_QP_CREATE_SQPN_QP1)
3670 tx_affinity = mqp->gsi_lag_port;
3671 else if (init)
3672 tx_affinity = get_tx_affinity_rr(dev, udata);
3673 else if ((attr_mask & IB_QP_AV) && attr->xmit_slave)
3674 tx_affinity =
3675 mlx5_lag_get_slave_port(dev->mdev, attr->xmit_slave);
3676 else
3677 return 0;
3678
3679 qp_base = &mqp->trans_qp.base;
3680 if (ucontext)
3681 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x ucontext %p\n",
3682 tx_affinity, qp_base->mqp.qpn, ucontext);
3683 else
3684 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x\n",
3685 tx_affinity, qp_base->mqp.qpn);
3686 return tx_affinity;
3687 }
3688
3689 static int __mlx5_ib_qp_set_counter(struct ib_qp *qp,
3690 struct rdma_counter *counter)
3691 {
3692 struct mlx5_ib_dev *dev = to_mdev(qp->device);
3693 u32 in[MLX5_ST_SZ_DW(rts2rts_qp_in)] = {};
3694 struct mlx5_ib_qp *mqp = to_mqp(qp);
3695 struct mlx5_ib_qp_base *base;
3696 u32 set_id;
3697 u32 *qpc;
3698
3699 if (counter)
3700 set_id = counter->id;
3701 else
3702 set_id = mlx5_ib_get_counters_id(dev, mqp->port - 1);
3703
3704 base = &mqp->trans_qp.base;
3705 MLX5_SET(rts2rts_qp_in, in, opcode, MLX5_CMD_OP_RTS2RTS_QP);
3706 MLX5_SET(rts2rts_qp_in, in, qpn, base->mqp.qpn);
3707 MLX5_SET(rts2rts_qp_in, in, uid, base->mqp.uid);
3708 MLX5_SET(rts2rts_qp_in, in, opt_param_mask,
3709 MLX5_QP_OPTPAR_COUNTER_SET_ID);
3710
3711 qpc = MLX5_ADDR_OF(rts2rts_qp_in, in, qpc);
3712 MLX5_SET(qpc, qpc, counter_set_id, set_id);
3713 return mlx5_cmd_exec_in(dev->mdev, rts2rts_qp, in);
3714 }
3715
3716 static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
3717 const struct ib_qp_attr *attr, int attr_mask,
3718 enum ib_qp_state cur_state,
3719 enum ib_qp_state new_state,
3720 const struct mlx5_ib_modify_qp *ucmd,
3721 struct mlx5_ib_modify_qp_resp *resp,
3722 struct ib_udata *udata)
3723 {
3724 static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
3725 [MLX5_QP_STATE_RST] = {
3726 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3727 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3728 [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_RST2INIT_QP,
3729 },
3730 [MLX5_QP_STATE_INIT] = {
3731 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3732 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3733 [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_INIT2INIT_QP,
3734 [MLX5_QP_STATE_RTR] = MLX5_CMD_OP_INIT2RTR_QP,
3735 },
3736 [MLX5_QP_STATE_RTR] = {
3737 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3738 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3739 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTR2RTS_QP,
3740 },
3741 [MLX5_QP_STATE_RTS] = {
3742 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3743 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3744 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTS2RTS_QP,
3745 },
3746 [MLX5_QP_STATE_SQD] = {
3747 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3748 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3749 },
3750 [MLX5_QP_STATE_SQER] = {
3751 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3752 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3753 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQERR2RTS_QP,
3754 },
3755 [MLX5_QP_STATE_ERR] = {
3756 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3757 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3758 }
3759 };
3760
3761 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3762 struct mlx5_ib_qp *qp = to_mqp(ibqp);
3763 struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
3764 struct mlx5_ib_cq *send_cq, *recv_cq;
3765 struct mlx5_ib_pd *pd;
3766 enum mlx5_qp_state mlx5_cur, mlx5_new;
3767 void *qpc, *pri_path, *alt_path;
3768 enum mlx5_qp_optpar optpar = 0;
3769 u32 set_id = 0;
3770 int mlx5_st;
3771 int err;
3772 u16 op;
3773 u8 tx_affinity = 0;
3774
3775 mlx5_st = to_mlx5_st(qp->type);
3776 if (mlx5_st < 0)
3777 return -EINVAL;
3778
3779 qpc = kzalloc(MLX5_ST_SZ_BYTES(qpc), GFP_KERNEL);
3780 if (!qpc)
3781 return -ENOMEM;
3782
3783 pd = to_mpd(qp->ibqp.pd);
3784 MLX5_SET(qpc, qpc, st, mlx5_st);
3785
3786 if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
3787 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
3788 } else {
3789 switch (attr->path_mig_state) {
3790 case IB_MIG_MIGRATED:
3791 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
3792 break;
3793 case IB_MIG_REARM:
3794 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_REARM);
3795 break;
3796 case IB_MIG_ARMED:
3797 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_ARMED);
3798 break;
3799 }
3800 }
3801
3802 tx_affinity = get_tx_affinity(ibqp, attr, attr_mask,
3803 cur_state == IB_QPS_RESET &&
3804 new_state == IB_QPS_INIT, udata);
3805
3806 MLX5_SET(qpc, qpc, lag_tx_port_affinity, tx_affinity);
3807 if (tx_affinity && new_state == IB_QPS_RTR &&
3808 MLX5_CAP_GEN(dev->mdev, init2_lag_tx_port_affinity))
3809 optpar |= MLX5_QP_OPTPAR_LAG_TX_AFF;
3810
3811 if (is_sqp(ibqp->qp_type)) {
3812 MLX5_SET(qpc, qpc, mtu, IB_MTU_256);
3813 MLX5_SET(qpc, qpc, log_msg_max, 8);
3814 } else if ((ibqp->qp_type == IB_QPT_UD &&
3815 !(qp->flags & IB_QP_CREATE_SOURCE_QPN)) ||
3816 ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
3817 MLX5_SET(qpc, qpc, mtu, IB_MTU_4096);
3818 MLX5_SET(qpc, qpc, log_msg_max, 12);
3819 } else if (attr_mask & IB_QP_PATH_MTU) {
3820 if (attr->path_mtu < IB_MTU_256 ||
3821 attr->path_mtu > IB_MTU_4096) {
3822 mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
3823 err = -EINVAL;
3824 goto out;
3825 }
3826 MLX5_SET(qpc, qpc, mtu, attr->path_mtu);
3827 MLX5_SET(qpc, qpc, log_msg_max,
3828 MLX5_CAP_GEN(dev->mdev, log_max_msg));
3829 }
3830
3831 if (attr_mask & IB_QP_DEST_QPN)
3832 MLX5_SET(qpc, qpc, remote_qpn, attr->dest_qp_num);
3833
3834 pri_path = MLX5_ADDR_OF(qpc, qpc, primary_address_path);
3835 alt_path = MLX5_ADDR_OF(qpc, qpc, secondary_address_path);
3836
3837 if (attr_mask & IB_QP_PKEY_INDEX)
3838 MLX5_SET(ads, pri_path, pkey_index, attr->pkey_index);
3839
3840 /* todo implement counter_index functionality */
3841
3842 if (is_sqp(ibqp->qp_type))
3843 MLX5_SET(ads, pri_path, vhca_port_num, qp->port);
3844
3845 if (attr_mask & IB_QP_PORT)
3846 MLX5_SET(ads, pri_path, vhca_port_num, attr->port_num);
3847
3848 if (attr_mask & IB_QP_AV) {
3849 err = mlx5_set_path(dev, qp, &attr->ah_attr, pri_path,
3850 attr_mask & IB_QP_PORT ? attr->port_num :
3851 qp->port,
3852 attr_mask, 0, attr, false);
3853 if (err)
3854 goto out;
3855 }
3856
3857 if (attr_mask & IB_QP_TIMEOUT)
3858 MLX5_SET(ads, pri_path, ack_timeout, attr->timeout);
3859
3860 if (attr_mask & IB_QP_ALT_PATH) {
3861 err = mlx5_set_path(dev, qp, &attr->alt_ah_attr, alt_path,
3862 attr->alt_port_num,
3863 attr_mask | IB_QP_PKEY_INDEX |
3864 IB_QP_TIMEOUT,
3865 0, attr, true);
3866 if (err)
3867 goto out;
3868 }
3869
3870 get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
3871 &send_cq, &recv_cq);
3872
3873 MLX5_SET(qpc, qpc, pd, pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
3874 if (send_cq)
3875 MLX5_SET(qpc, qpc, cqn_snd, send_cq->mcq.cqn);
3876 if (recv_cq)
3877 MLX5_SET(qpc, qpc, cqn_rcv, recv_cq->mcq.cqn);
3878
3879 MLX5_SET(qpc, qpc, log_ack_req_freq, MLX5_IB_ACK_REQ_FREQ);
3880
3881 if (attr_mask & IB_QP_RNR_RETRY)
3882 MLX5_SET(qpc, qpc, rnr_retry, attr->rnr_retry);
3883
3884 if (attr_mask & IB_QP_RETRY_CNT)
3885 MLX5_SET(qpc, qpc, retry_count, attr->retry_cnt);
3886
3887 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && attr->max_rd_atomic)
3888 MLX5_SET(qpc, qpc, log_sra_max, ilog2(attr->max_rd_atomic));
3889
3890 if (attr_mask & IB_QP_SQ_PSN)
3891 MLX5_SET(qpc, qpc, next_send_psn, attr->sq_psn);
3892
3893 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && attr->max_dest_rd_atomic)
3894 MLX5_SET(qpc, qpc, log_rra_max,
3895 ilog2(attr->max_dest_rd_atomic));
3896
3897 if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) {
3898 err = set_qpc_atomic_flags(qp, attr, attr_mask, qpc);
3899 if (err)
3900 goto out;
3901 }
3902
3903 if (attr_mask & IB_QP_MIN_RNR_TIMER)
3904 MLX5_SET(qpc, qpc, min_rnr_nak, attr->min_rnr_timer);
3905
3906 if (attr_mask & IB_QP_RQ_PSN)
3907 MLX5_SET(qpc, qpc, next_rcv_psn, attr->rq_psn);
3908
3909 if (attr_mask & IB_QP_QKEY)
3910 MLX5_SET(qpc, qpc, q_key, attr->qkey);
3911
3912 if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
3913 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
3914
3915 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3916 u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
3917 qp->port) - 1;
3918
3919 /* Underlay port should be used - index 0 function per port */
3920 if (qp->flags & IB_QP_CREATE_SOURCE_QPN)
3921 port_num = 0;
3922
3923 if (ibqp->counter)
3924 set_id = ibqp->counter->id;
3925 else
3926 set_id = mlx5_ib_get_counters_id(dev, port_num);
3927 MLX5_SET(qpc, qpc, counter_set_id, set_id);
3928 }
3929
3930 if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
3931 MLX5_SET(qpc, qpc, rlky, 1);
3932
3933 if (qp->flags & MLX5_IB_QP_CREATE_SQPN_QP1)
3934 MLX5_SET(qpc, qpc, deth_sqpn, 1);
3935
3936 mlx5_cur = to_mlx5_state(cur_state);
3937 mlx5_new = to_mlx5_state(new_state);
3938
3939 if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
3940 !optab[mlx5_cur][mlx5_new]) {
3941 err = -EINVAL;
3942 goto out;
3943 }
3944
3945 op = optab[mlx5_cur][mlx5_new];
3946 optpar |= ib_mask_to_mlx5_opt(attr_mask);
3947 optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
3948
3949 if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
3950 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
3951 struct mlx5_modify_raw_qp_param raw_qp_param = {};
3952
3953 raw_qp_param.operation = op;
3954 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3955 raw_qp_param.rq_q_ctr_id = set_id;
3956 raw_qp_param.set_mask |= MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID;
3957 }
3958
3959 if (attr_mask & IB_QP_PORT)
3960 raw_qp_param.port = attr->port_num;
3961
3962 if (attr_mask & IB_QP_RATE_LIMIT) {
3963 raw_qp_param.rl.rate = attr->rate_limit;
3964
3965 if (ucmd->burst_info.max_burst_sz) {
3966 if (attr->rate_limit &&
3967 MLX5_CAP_QOS(dev->mdev, packet_pacing_burst_bound)) {
3968 raw_qp_param.rl.max_burst_sz =
3969 ucmd->burst_info.max_burst_sz;
3970 } else {
3971 err = -EINVAL;
3972 goto out;
3973 }
3974 }
3975
3976 if (ucmd->burst_info.typical_pkt_sz) {
3977 if (attr->rate_limit &&
3978 MLX5_CAP_QOS(dev->mdev, packet_pacing_typical_size)) {
3979 raw_qp_param.rl.typical_pkt_sz =
3980 ucmd->burst_info.typical_pkt_sz;
3981 } else {
3982 err = -EINVAL;
3983 goto out;
3984 }
3985 }
3986
3987 raw_qp_param.set_mask |= MLX5_RAW_QP_RATE_LIMIT;
3988 }
3989
3990 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, tx_affinity);
3991 } else {
3992 if (udata) {
3993 /* For the kernel flows, the resp will stay zero */
3994 resp->ece_options =
3995 MLX5_CAP_GEN(dev->mdev, ece_support) ?
3996 ucmd->ece_options : 0;
3997 resp->response_length = sizeof(*resp);
3998 }
3999 err = mlx5_core_qp_modify(dev, op, optpar, qpc, &base->mqp,
4000 &resp->ece_options);
4001 }
4002
4003 if (err)
4004 goto out;
4005
4006 qp->state = new_state;
4007
4008 if (attr_mask & IB_QP_ACCESS_FLAGS)
4009 qp->trans_qp.atomic_rd_en = attr->qp_access_flags;
4010 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
4011 qp->trans_qp.resp_depth = attr->max_dest_rd_atomic;
4012 if (attr_mask & IB_QP_PORT)
4013 qp->port = attr->port_num;
4014 if (attr_mask & IB_QP_ALT_PATH)
4015 qp->trans_qp.alt_port = attr->alt_port_num;
4016
4017 /*
4018 * If we moved a kernel QP to RESET, clean up all old CQ
4019 * entries and reinitialize the QP.
4020 */
4021 if (new_state == IB_QPS_RESET &&
4022 !ibqp->uobject && ibqp->qp_type != IB_QPT_XRC_TGT) {
4023 mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
4024 ibqp->srq ? to_msrq(ibqp->srq) : NULL);
4025 if (send_cq != recv_cq)
4026 mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL);
4027
4028 qp->rq.head = 0;
4029 qp->rq.tail = 0;
4030 qp->sq.head = 0;
4031 qp->sq.tail = 0;
4032 qp->sq.cur_post = 0;
4033 if (qp->sq.wqe_cnt)
4034 qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
4035 qp->sq.last_poll = 0;
4036 qp->db.db[MLX5_RCV_DBR] = 0;
4037 qp->db.db[MLX5_SND_DBR] = 0;
4038 }
4039
4040 if ((new_state == IB_QPS_RTS) && qp->counter_pending) {
4041 err = __mlx5_ib_qp_set_counter(ibqp, ibqp->counter);
4042 if (!err)
4043 qp->counter_pending = 0;
4044 }
4045
4046 out:
4047 kfree(qpc);
4048 return err;
4049 }
4050
4051 static inline bool is_valid_mask(int mask, int req, int opt)
4052 {
4053 if ((mask & req) != req)
4054 return false;
4055
4056 if (mask & ~(req | opt))
4057 return false;
4058
4059 return true;
4060 }
4061
4062 /* check valid transition for driver QP types
4063 * for now the only QP type that this function supports is DCI
4064 */
4065 static bool modify_dci_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state new_state,
4066 enum ib_qp_attr_mask attr_mask)
4067 {
4068 int req = IB_QP_STATE;
4069 int opt = 0;
4070
4071 if (new_state == IB_QPS_RESET) {
4072 return is_valid_mask(attr_mask, req, opt);
4073 } else if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
4074 req |= IB_QP_PKEY_INDEX | IB_QP_PORT;
4075 return is_valid_mask(attr_mask, req, opt);
4076 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {
4077 opt = IB_QP_PKEY_INDEX | IB_QP_PORT;
4078 return is_valid_mask(attr_mask, req, opt);
4079 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
4080 req |= IB_QP_PATH_MTU;
4081 opt = IB_QP_PKEY_INDEX | IB_QP_AV;
4082 return is_valid_mask(attr_mask, req, opt);
4083 } else if (cur_state == IB_QPS_RTR && new_state == IB_QPS_RTS) {
4084 req |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY |
4085 IB_QP_MAX_QP_RD_ATOMIC | IB_QP_SQ_PSN;
4086 opt = IB_QP_MIN_RNR_TIMER;
4087 return is_valid_mask(attr_mask, req, opt);
4088 } else if (cur_state == IB_QPS_RTS && new_state == IB_QPS_RTS) {
4089 opt = IB_QP_MIN_RNR_TIMER;
4090 return is_valid_mask(attr_mask, req, opt);
4091 } else if (cur_state != IB_QPS_RESET && new_state == IB_QPS_ERR) {
4092 return is_valid_mask(attr_mask, req, opt);
4093 }
4094 return false;
4095 }
4096
4097 /* mlx5_ib_modify_dct: modify a DCT QP
4098 * valid transitions are:
4099 * RESET to INIT: must set access_flags, pkey_index and port
4100 * INIT to RTR : must set min_rnr_timer, tclass, flow_label,
4101 * mtu, gid_index and hop_limit
4102 * Other transitions and attributes are illegal
4103 */
4104 static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr,
4105 int attr_mask, struct mlx5_ib_modify_qp *ucmd,
4106 struct ib_udata *udata)
4107 {
4108 struct mlx5_ib_qp *qp = to_mqp(ibqp);
4109 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4110 enum ib_qp_state cur_state, new_state;
4111 int required = IB_QP_STATE;
4112 void *dctc;
4113 int err;
4114
4115 if (!(attr_mask & IB_QP_STATE))
4116 return -EINVAL;
4117
4118 cur_state = qp->state;
4119 new_state = attr->qp_state;
4120
4121 dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
4122 if (MLX5_CAP_GEN(dev->mdev, ece_support) && ucmd->ece_options)
4123 /*
4124 * DCT doesn't initialize QP till modify command is executed,
4125 * so we need to overwrite previously set ECE field if user
4126 * provided any value except zero, which means not set/not
4127 * valid.
4128 */
4129 MLX5_SET(dctc, dctc, ece, ucmd->ece_options);
4130
4131 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
4132 u16 set_id;
4133
4134 required |= IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PORT;
4135 if (!is_valid_mask(attr_mask, required, 0))
4136 return -EINVAL;
4137
4138 if (attr->port_num == 0 ||
4139 attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports)) {
4140 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
4141 attr->port_num, dev->num_ports);
4142 return -EINVAL;
4143 }
4144 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
4145 MLX5_SET(dctc, dctc, rre, 1);
4146 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
4147 MLX5_SET(dctc, dctc, rwe, 1);
4148 if (attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC) {
4149 int atomic_mode;
4150
4151 atomic_mode = get_atomic_mode(dev, MLX5_IB_QPT_DCT);
4152 if (atomic_mode < 0)
4153 return -EOPNOTSUPP;
4154
4155 MLX5_SET(dctc, dctc, atomic_mode, atomic_mode);
4156 MLX5_SET(dctc, dctc, rae, 1);
4157 }
4158 MLX5_SET(dctc, dctc, pkey_index, attr->pkey_index);
4159 if (mlx5_lag_is_active(dev->mdev))
4160 MLX5_SET(dctc, dctc, port,
4161 get_tx_affinity_rr(dev, udata));
4162 else
4163 MLX5_SET(dctc, dctc, port, attr->port_num);
4164
4165 set_id = mlx5_ib_get_counters_id(dev, attr->port_num - 1);
4166 MLX5_SET(dctc, dctc, counter_set_id, set_id);
4167 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
4168 struct mlx5_ib_modify_qp_resp resp = {};
4169 u32 out[MLX5_ST_SZ_DW(create_dct_out)] = {};
4170 u32 min_resp_len = offsetofend(typeof(resp), dctn);
4171
4172 if (udata->outlen < min_resp_len)
4173 return -EINVAL;
4174 /*
4175 * If we don't have enough space for the ECE options,
4176 * simply indicate it with resp.response_length.
4177 */
4178 resp.response_length = (udata->outlen < sizeof(resp)) ?
4179 min_resp_len :
4180 sizeof(resp);
4181
4182 required |= IB_QP_MIN_RNR_TIMER | IB_QP_AV | IB_QP_PATH_MTU;
4183 if (!is_valid_mask(attr_mask, required, 0))
4184 return -EINVAL;
4185 MLX5_SET(dctc, dctc, min_rnr_nak, attr->min_rnr_timer);
4186 MLX5_SET(dctc, dctc, tclass, attr->ah_attr.grh.traffic_class);
4187 MLX5_SET(dctc, dctc, flow_label, attr->ah_attr.grh.flow_label);
4188 MLX5_SET(dctc, dctc, mtu, attr->path_mtu);
4189 MLX5_SET(dctc, dctc, my_addr_index, attr->ah_attr.grh.sgid_index);
4190 MLX5_SET(dctc, dctc, hop_limit, attr->ah_attr.grh.hop_limit);
4191
4192 err = mlx5_core_create_dct(dev, &qp->dct.mdct, qp->dct.in,
4193 MLX5_ST_SZ_BYTES(create_dct_in), out,
4194 sizeof(out));
4195 if (err)
4196 return err;
4197 resp.dctn = qp->dct.mdct.mqp.qpn;
4198 if (MLX5_CAP_GEN(dev->mdev, ece_support))
4199 resp.ece_options = MLX5_GET(create_dct_out, out, ece);
4200 err = ib_copy_to_udata(udata, &resp, resp.response_length);
4201 if (err) {
4202 mlx5_core_destroy_dct(dev, &qp->dct.mdct);
4203 return err;
4204 }
4205 } else {
4206 mlx5_ib_warn(dev, "Modify DCT: Invalid transition from %d to %d\n", cur_state, new_state);
4207 return -EINVAL;
4208 }
4209
4210 qp->state = new_state;
4211 return 0;
4212 }
4213
4214 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
4215 int attr_mask, struct ib_udata *udata)
4216 {
4217 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4218 struct mlx5_ib_modify_qp_resp resp = {};
4219 struct mlx5_ib_qp *qp = to_mqp(ibqp);
4220 struct mlx5_ib_modify_qp ucmd = {};
4221 enum ib_qp_type qp_type;
4222 enum ib_qp_state cur_state, new_state;
4223 int err = -EINVAL;
4224 int port;
4225
4226 if (attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT))
4227 return -EOPNOTSUPP;
4228
4229 if (ibqp->rwq_ind_tbl)
4230 return -ENOSYS;
4231
4232 if (udata && udata->inlen) {
4233 if (udata->inlen < offsetofend(typeof(ucmd), ece_options))
4234 return -EINVAL;
4235
4236 if (udata->inlen > sizeof(ucmd) &&
4237 !ib_is_udata_cleared(udata, sizeof(ucmd),
4238 udata->inlen - sizeof(ucmd)))
4239 return -EOPNOTSUPP;
4240
4241 if (ib_copy_from_udata(&ucmd, udata,
4242 min(udata->inlen, sizeof(ucmd))))
4243 return -EFAULT;
4244
4245 if (ucmd.comp_mask ||
4246 memchr_inv(&ucmd.burst_info.reserved, 0,
4247 sizeof(ucmd.burst_info.reserved)))
4248 return -EOPNOTSUPP;
4249
4250 }
4251
4252 if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4253 return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
4254
4255 qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ? IB_QPT_GSI :
4256 qp->type;
4257
4258 if (qp_type == MLX5_IB_QPT_DCT)
4259 return mlx5_ib_modify_dct(ibqp, attr, attr_mask, &ucmd, udata);
4260
4261 mutex_lock(&qp->mutex);
4262
4263 cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
4264 new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
4265
4266 if (!(cur_state == new_state && cur_state == IB_QPS_RESET)) {
4267 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
4268 }
4269
4270 if (qp->flags & IB_QP_CREATE_SOURCE_QPN) {
4271 if (attr_mask & ~(IB_QP_STATE | IB_QP_CUR_STATE)) {
4272 mlx5_ib_dbg(dev, "invalid attr_mask 0x%x when underlay QP is used\n",
4273 attr_mask);
4274 goto out;
4275 }
4276 } else if (qp_type != MLX5_IB_QPT_REG_UMR &&
4277 qp_type != MLX5_IB_QPT_DCI &&
4278 !ib_modify_qp_is_ok(cur_state, new_state, qp_type,
4279 attr_mask)) {
4280 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
4281 cur_state, new_state, ibqp->qp_type, attr_mask);
4282 goto out;
4283 } else if (qp_type == MLX5_IB_QPT_DCI &&
4284 !modify_dci_qp_is_ok(cur_state, new_state, attr_mask)) {
4285 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
4286 cur_state, new_state, qp_type, attr_mask);
4287 goto out;
4288 }
4289
4290 if ((attr_mask & IB_QP_PORT) &&
4291 (attr->port_num == 0 ||
4292 attr->port_num > dev->num_ports)) {
4293 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
4294 attr->port_num, dev->num_ports);
4295 goto out;
4296 }
4297
4298 if (attr_mask & IB_QP_PKEY_INDEX) {
4299 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
4300 if (attr->pkey_index >=
4301 dev->mdev->port_caps[port - 1].pkey_table_len) {
4302 mlx5_ib_dbg(dev, "invalid pkey index %d\n",
4303 attr->pkey_index);
4304 goto out;
4305 }
4306 }
4307
4308 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
4309 attr->max_rd_atomic >
4310 (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_res_qp))) {
4311 mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n",
4312 attr->max_rd_atomic);
4313 goto out;
4314 }
4315
4316 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
4317 attr->max_dest_rd_atomic >
4318 (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_req_qp))) {
4319 mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n",
4320 attr->max_dest_rd_atomic);
4321 goto out;
4322 }
4323
4324 if (cur_state == new_state && cur_state == IB_QPS_RESET) {
4325 err = 0;
4326 goto out;
4327 }
4328
4329 err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state,
4330 new_state, &ucmd, &resp, udata);
4331
4332 /* resp.response_length is set in ECE supported flows only */
4333 if (!err && resp.response_length &&
4334 udata->outlen >= resp.response_length)
4335 /* Return -EFAULT to the user and expect him to destroy QP. */
4336 err = ib_copy_to_udata(udata, &resp, resp.response_length);
4337
4338 out:
4339 mutex_unlock(&qp->mutex);
4340 return err;
4341 }
4342
4343 static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
4344 {
4345 switch (mlx5_state) {
4346 case MLX5_QP_STATE_RST: return IB_QPS_RESET;
4347 case MLX5_QP_STATE_INIT: return IB_QPS_INIT;
4348 case MLX5_QP_STATE_RTR: return IB_QPS_RTR;
4349 case MLX5_QP_STATE_RTS: return IB_QPS_RTS;
4350 case MLX5_QP_STATE_SQ_DRAINING:
4351 case MLX5_QP_STATE_SQD: return IB_QPS_SQD;
4352 case MLX5_QP_STATE_SQER: return IB_QPS_SQE;
4353 case MLX5_QP_STATE_ERR: return IB_QPS_ERR;
4354 default: return -1;
4355 }
4356 }
4357
4358 static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
4359 {
4360 switch (mlx5_mig_state) {
4361 case MLX5_QP_PM_ARMED: return IB_MIG_ARMED;
4362 case MLX5_QP_PM_REARM: return IB_MIG_REARM;
4363 case MLX5_QP_PM_MIGRATED: return IB_MIG_MIGRATED;
4364 default: return -1;
4365 }
4366 }
4367
4368 static void to_rdma_ah_attr(struct mlx5_ib_dev *ibdev,
4369 struct rdma_ah_attr *ah_attr, void *path)
4370 {
4371 int port = MLX5_GET(ads, path, vhca_port_num);
4372 int static_rate;
4373
4374 memset(ah_attr, 0, sizeof(*ah_attr));
4375
4376 if (!port || port > ibdev->num_ports)
4377 return;
4378
4379 ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, port);
4380
4381 rdma_ah_set_port_num(ah_attr, port);
4382 rdma_ah_set_sl(ah_attr, MLX5_GET(ads, path, sl));
4383
4384 rdma_ah_set_dlid(ah_attr, MLX5_GET(ads, path, rlid));
4385 rdma_ah_set_path_bits(ah_attr, MLX5_GET(ads, path, mlid));
4386
4387 static_rate = MLX5_GET(ads, path, stat_rate);
4388 rdma_ah_set_static_rate(ah_attr, static_rate ? static_rate - 5 : 0);
4389 if (MLX5_GET(ads, path, grh) ||
4390 ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) {
4391 rdma_ah_set_grh(ah_attr, NULL, MLX5_GET(ads, path, flow_label),
4392 MLX5_GET(ads, path, src_addr_index),
4393 MLX5_GET(ads, path, hop_limit),
4394 MLX5_GET(ads, path, tclass));
4395 rdma_ah_set_dgid_raw(ah_attr, MLX5_ADDR_OF(ads, path, rgid_rip));
4396 }
4397 }
4398
4399 static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev,
4400 struct mlx5_ib_sq *sq,
4401 u8 *sq_state)
4402 {
4403 int err;
4404
4405 err = mlx5_core_query_sq_state(dev->mdev, sq->base.mqp.qpn, sq_state);
4406 if (err)
4407 goto out;
4408 sq->state = *sq_state;
4409
4410 out:
4411 return err;
4412 }
4413
4414 static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev,
4415 struct mlx5_ib_rq *rq,
4416 u8 *rq_state)
4417 {
4418 void *out;
4419 void *rqc;
4420 int inlen;
4421 int err;
4422
4423 inlen = MLX5_ST_SZ_BYTES(query_rq_out);
4424 out = kvzalloc(inlen, GFP_KERNEL);
4425 if (!out)
4426 return -ENOMEM;
4427
4428 err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out);
4429 if (err)
4430 goto out;
4431
4432 rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context);
4433 *rq_state = MLX5_GET(rqc, rqc, state);
4434 rq->state = *rq_state;
4435
4436 out:
4437 kvfree(out);
4438 return err;
4439 }
4440
4441 static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state,
4442 struct mlx5_ib_qp *qp, u8 *qp_state)
4443 {
4444 static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = {
4445 [MLX5_RQC_STATE_RST] = {
4446 [MLX5_SQC_STATE_RST] = IB_QPS_RESET,
4447 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE_BAD,
4448 [MLX5_SQC_STATE_ERR] = MLX5_QP_STATE_BAD,
4449 [MLX5_SQ_STATE_NA] = IB_QPS_RESET,
4450 },
4451 [MLX5_RQC_STATE_RDY] = {
4452 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE,
4453 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE,
4454 [MLX5_SQC_STATE_ERR] = IB_QPS_SQE,
4455 [MLX5_SQ_STATE_NA] = MLX5_QP_STATE,
4456 },
4457 [MLX5_RQC_STATE_ERR] = {
4458 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE_BAD,
4459 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE_BAD,
4460 [MLX5_SQC_STATE_ERR] = IB_QPS_ERR,
4461 [MLX5_SQ_STATE_NA] = IB_QPS_ERR,
4462 },
4463 [MLX5_RQ_STATE_NA] = {
4464 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE,
4465 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE,
4466 [MLX5_SQC_STATE_ERR] = MLX5_QP_STATE,
4467 [MLX5_SQ_STATE_NA] = MLX5_QP_STATE_BAD,
4468 },
4469 };
4470
4471 *qp_state = sqrq_trans[rq_state][sq_state];
4472
4473 if (*qp_state == MLX5_QP_STATE_BAD) {
4474 WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x",
4475 qp->raw_packet_qp.sq.base.mqp.qpn, sq_state,
4476 qp->raw_packet_qp.rq.base.mqp.qpn, rq_state);
4477 return -EINVAL;
4478 }
4479
4480 if (*qp_state == MLX5_QP_STATE)
4481 *qp_state = qp->state;
4482
4483 return 0;
4484 }
4485
4486 static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev,
4487 struct mlx5_ib_qp *qp,
4488 u8 *raw_packet_qp_state)
4489 {
4490 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
4491 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
4492 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
4493 int err;
4494 u8 sq_state = MLX5_SQ_STATE_NA;
4495 u8 rq_state = MLX5_RQ_STATE_NA;
4496
4497 if (qp->sq.wqe_cnt) {
4498 err = query_raw_packet_qp_sq_state(dev, sq, &sq_state);
4499 if (err)
4500 return err;
4501 }
4502
4503 if (qp->rq.wqe_cnt) {
4504 err = query_raw_packet_qp_rq_state(dev, rq, &rq_state);
4505 if (err)
4506 return err;
4507 }
4508
4509 return sqrq_state_to_qp_state(sq_state, rq_state, qp,
4510 raw_packet_qp_state);
4511 }
4512
4513 static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
4514 struct ib_qp_attr *qp_attr)
4515 {
4516 int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
4517 void *qpc, *pri_path, *alt_path;
4518 u32 *outb;
4519 int err;
4520
4521 outb = kzalloc(outlen, GFP_KERNEL);
4522 if (!outb)
4523 return -ENOMEM;
4524
4525 err = mlx5_core_qp_query(dev, &qp->trans_qp.base.mqp, outb, outlen);
4526 if (err)
4527 goto out;
4528
4529 qpc = MLX5_ADDR_OF(query_qp_out, outb, qpc);
4530
4531 qp->state = to_ib_qp_state(MLX5_GET(qpc, qpc, state));
4532 if (MLX5_GET(qpc, qpc, state) == MLX5_QP_STATE_SQ_DRAINING)
4533 qp_attr->sq_draining = 1;
4534
4535 qp_attr->path_mtu = MLX5_GET(qpc, qpc, mtu);
4536 qp_attr->path_mig_state = to_ib_mig_state(MLX5_GET(qpc, qpc, pm_state));
4537 qp_attr->qkey = MLX5_GET(qpc, qpc, q_key);
4538 qp_attr->rq_psn = MLX5_GET(qpc, qpc, next_rcv_psn);
4539 qp_attr->sq_psn = MLX5_GET(qpc, qpc, next_send_psn);
4540 qp_attr->dest_qp_num = MLX5_GET(qpc, qpc, remote_qpn);
4541
4542 if (MLX5_GET(qpc, qpc, rre))
4543 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_READ;
4544 if (MLX5_GET(qpc, qpc, rwe))
4545 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_WRITE;
4546 if (MLX5_GET(qpc, qpc, rae))
4547 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_ATOMIC;
4548
4549 qp_attr->max_rd_atomic = 1 << MLX5_GET(qpc, qpc, log_sra_max);
4550 qp_attr->max_dest_rd_atomic = 1 << MLX5_GET(qpc, qpc, log_rra_max);
4551 qp_attr->min_rnr_timer = MLX5_GET(qpc, qpc, min_rnr_nak);
4552 qp_attr->retry_cnt = MLX5_GET(qpc, qpc, retry_count);
4553 qp_attr->rnr_retry = MLX5_GET(qpc, qpc, rnr_retry);
4554
4555 pri_path = MLX5_ADDR_OF(qpc, qpc, primary_address_path);
4556 alt_path = MLX5_ADDR_OF(qpc, qpc, secondary_address_path);
4557
4558 if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC ||
4559 qp->ibqp.qp_type == IB_QPT_XRC_INI ||
4560 qp->ibqp.qp_type == IB_QPT_XRC_TGT) {
4561 to_rdma_ah_attr(dev, &qp_attr->ah_attr, pri_path);
4562 to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, alt_path);
4563 qp_attr->alt_pkey_index = MLX5_GET(ads, alt_path, pkey_index);
4564 qp_attr->alt_port_num = MLX5_GET(ads, alt_path, vhca_port_num);
4565 }
4566
4567 qp_attr->pkey_index = MLX5_GET(ads, pri_path, pkey_index);
4568 qp_attr->port_num = MLX5_GET(ads, pri_path, vhca_port_num);
4569 qp_attr->timeout = MLX5_GET(ads, pri_path, ack_timeout);
4570 qp_attr->alt_timeout = MLX5_GET(ads, alt_path, ack_timeout);
4571
4572 out:
4573 kfree(outb);
4574 return err;
4575 }
4576
4577 static int mlx5_ib_dct_query_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *mqp,
4578 struct ib_qp_attr *qp_attr, int qp_attr_mask,
4579 struct ib_qp_init_attr *qp_init_attr)
4580 {
4581 struct mlx5_core_dct *dct = &mqp->dct.mdct;
4582 u32 *out;
4583 u32 access_flags = 0;
4584 int outlen = MLX5_ST_SZ_BYTES(query_dct_out);
4585 void *dctc;
4586 int err;
4587 int supported_mask = IB_QP_STATE |
4588 IB_QP_ACCESS_FLAGS |
4589 IB_QP_PORT |
4590 IB_QP_MIN_RNR_TIMER |
4591 IB_QP_AV |
4592 IB_QP_PATH_MTU |
4593 IB_QP_PKEY_INDEX;
4594
4595 if (qp_attr_mask & ~supported_mask)
4596 return -EINVAL;
4597 if (mqp->state != IB_QPS_RTR)
4598 return -EINVAL;
4599
4600 out = kzalloc(outlen, GFP_KERNEL);
4601 if (!out)
4602 return -ENOMEM;
4603
4604 err = mlx5_core_dct_query(dev, dct, out, outlen);
4605 if (err)
4606 goto out;
4607
4608 dctc = MLX5_ADDR_OF(query_dct_out, out, dct_context_entry);
4609
4610 if (qp_attr_mask & IB_QP_STATE)
4611 qp_attr->qp_state = IB_QPS_RTR;
4612
4613 if (qp_attr_mask & IB_QP_ACCESS_FLAGS) {
4614 if (MLX5_GET(dctc, dctc, rre))
4615 access_flags |= IB_ACCESS_REMOTE_READ;
4616 if (MLX5_GET(dctc, dctc, rwe))
4617 access_flags |= IB_ACCESS_REMOTE_WRITE;
4618 if (MLX5_GET(dctc, dctc, rae))
4619 access_flags |= IB_ACCESS_REMOTE_ATOMIC;
4620 qp_attr->qp_access_flags = access_flags;
4621 }
4622
4623 if (qp_attr_mask & IB_QP_PORT)
4624 qp_attr->port_num = MLX5_GET(dctc, dctc, port);
4625 if (qp_attr_mask & IB_QP_MIN_RNR_TIMER)
4626 qp_attr->min_rnr_timer = MLX5_GET(dctc, dctc, min_rnr_nak);
4627 if (qp_attr_mask & IB_QP_AV) {
4628 qp_attr->ah_attr.grh.traffic_class = MLX5_GET(dctc, dctc, tclass);
4629 qp_attr->ah_attr.grh.flow_label = MLX5_GET(dctc, dctc, flow_label);
4630 qp_attr->ah_attr.grh.sgid_index = MLX5_GET(dctc, dctc, my_addr_index);
4631 qp_attr->ah_attr.grh.hop_limit = MLX5_GET(dctc, dctc, hop_limit);
4632 }
4633 if (qp_attr_mask & IB_QP_PATH_MTU)
4634 qp_attr->path_mtu = MLX5_GET(dctc, dctc, mtu);
4635 if (qp_attr_mask & IB_QP_PKEY_INDEX)
4636 qp_attr->pkey_index = MLX5_GET(dctc, dctc, pkey_index);
4637 out:
4638 kfree(out);
4639 return err;
4640 }
4641
4642 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
4643 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
4644 {
4645 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4646 struct mlx5_ib_qp *qp = to_mqp(ibqp);
4647 int err = 0;
4648 u8 raw_packet_qp_state;
4649
4650 if (ibqp->rwq_ind_tbl)
4651 return -ENOSYS;
4652
4653 if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4654 return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
4655 qp_init_attr);
4656
4657 /* Not all of output fields are applicable, make sure to zero them */
4658 memset(qp_init_attr, 0, sizeof(*qp_init_attr));
4659 memset(qp_attr, 0, sizeof(*qp_attr));
4660
4661 if (unlikely(qp->type == MLX5_IB_QPT_DCT))
4662 return mlx5_ib_dct_query_qp(dev, qp, qp_attr,
4663 qp_attr_mask, qp_init_attr);
4664
4665 mutex_lock(&qp->mutex);
4666
4667 if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
4668 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
4669 err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
4670 if (err)
4671 goto out;
4672 qp->state = raw_packet_qp_state;
4673 qp_attr->port_num = 1;
4674 } else {
4675 err = query_qp_attr(dev, qp, qp_attr);
4676 if (err)
4677 goto out;
4678 }
4679
4680 qp_attr->qp_state = qp->state;
4681 qp_attr->cur_qp_state = qp_attr->qp_state;
4682 qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt;
4683 qp_attr->cap.max_recv_sge = qp->rq.max_gs;
4684
4685 if (!ibqp->uobject) {
4686 qp_attr->cap.max_send_wr = qp->sq.max_post;
4687 qp_attr->cap.max_send_sge = qp->sq.max_gs;
4688 qp_init_attr->qp_context = ibqp->qp_context;
4689 } else {
4690 qp_attr->cap.max_send_wr = 0;
4691 qp_attr->cap.max_send_sge = 0;
4692 }
4693
4694 qp_init_attr->qp_type = ibqp->qp_type;
4695 qp_init_attr->recv_cq = ibqp->recv_cq;
4696 qp_init_attr->send_cq = ibqp->send_cq;
4697 qp_init_attr->srq = ibqp->srq;
4698 qp_attr->cap.max_inline_data = qp->max_inline_data;
4699
4700 qp_init_attr->cap = qp_attr->cap;
4701
4702 qp_init_attr->create_flags = qp->flags;
4703
4704 qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
4705 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
4706
4707 out:
4708 mutex_unlock(&qp->mutex);
4709 return err;
4710 }
4711
4712 int mlx5_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
4713 {
4714 struct mlx5_ib_dev *dev = to_mdev(ibxrcd->device);
4715 struct mlx5_ib_xrcd *xrcd = to_mxrcd(ibxrcd);
4716
4717 if (!MLX5_CAP_GEN(dev->mdev, xrc))
4718 return -EOPNOTSUPP;
4719
4720 return mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
4721 }
4722
4723 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
4724 {
4725 struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
4726 u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
4727
4728 return mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
4729 }
4730
4731 static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
4732 {
4733 struct mlx5_ib_rwq *rwq = to_mibrwq(core_qp);
4734 struct mlx5_ib_dev *dev = to_mdev(rwq->ibwq.device);
4735 struct ib_event event;
4736
4737 if (rwq->ibwq.event_handler) {
4738 event.device = rwq->ibwq.device;
4739 event.element.wq = &rwq->ibwq;
4740 switch (type) {
4741 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
4742 event.event = IB_EVENT_WQ_FATAL;
4743 break;
4744 default:
4745 mlx5_ib_warn(dev, "Unexpected event type %d on WQ %06x\n", type, core_qp->qpn);
4746 return;
4747 }
4748
4749 rwq->ibwq.event_handler(&event, rwq->ibwq.wq_context);
4750 }
4751 }
4752
4753 static int set_delay_drop(struct mlx5_ib_dev *dev)
4754 {
4755 int err = 0;
4756
4757 mutex_lock(&dev->delay_drop.lock);
4758 if (dev->delay_drop.activate)
4759 goto out;
4760
4761 err = mlx5_core_set_delay_drop(dev, dev->delay_drop.timeout);
4762 if (err)
4763 goto out;
4764
4765 dev->delay_drop.activate = true;
4766 out:
4767 mutex_unlock(&dev->delay_drop.lock);
4768
4769 if (!err)
4770 atomic_inc(&dev->delay_drop.rqs_cnt);
4771 return err;
4772 }
4773
4774 static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
4775 struct ib_wq_init_attr *init_attr)
4776 {
4777 struct mlx5_ib_dev *dev;
4778 int has_net_offloads;
4779 __be64 *rq_pas0;
4780 void *in;
4781 void *rqc;
4782 void *wq;
4783 int inlen;
4784 int err;
4785
4786 dev = to_mdev(pd->device);
4787
4788 inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
4789 in = kvzalloc(inlen, GFP_KERNEL);
4790 if (!in)
4791 return -ENOMEM;
4792
4793 MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
4794 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
4795 MLX5_SET(rqc, rqc, mem_rq_type,
4796 MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
4797 MLX5_SET(rqc, rqc, user_index, rwq->user_index);
4798 MLX5_SET(rqc, rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
4799 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
4800 MLX5_SET(rqc, rqc, flush_in_error_en, 1);
4801 wq = MLX5_ADDR_OF(rqc, rqc, wq);
4802 MLX5_SET(wq, wq, wq_type,
4803 rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ ?
4804 MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ : MLX5_WQ_TYPE_CYCLIC);
4805 if (init_attr->create_flags & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
4806 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
4807 mlx5_ib_dbg(dev, "Scatter end padding is not supported\n");
4808 err = -EOPNOTSUPP;
4809 goto out;
4810 } else {
4811 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
4812 }
4813 }
4814 MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
4815 if (rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ) {
4816 /*
4817 * In Firmware number of strides in each WQE is:
4818 * "512 * 2^single_wqe_log_num_of_strides"
4819 * Values 3 to 8 are accepted as 10 to 15, 9 to 18 are
4820 * accepted as 0 to 9
4821 */
4822 static const u8 fw_map[] = { 10, 11, 12, 13, 14, 15, 0, 1,
4823 2, 3, 4, 5, 6, 7, 8, 9 };
4824 MLX5_SET(wq, wq, two_byte_shift_en, rwq->two_byte_shift_en);
4825 MLX5_SET(wq, wq, log_wqe_stride_size,
4826 rwq->single_stride_log_num_of_bytes -
4827 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES);
4828 MLX5_SET(wq, wq, log_wqe_num_of_strides,
4829 fw_map[rwq->log_num_strides -
4830 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES]);
4831 }
4832 MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
4833 MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
4834 MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
4835 MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
4836 MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
4837 MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
4838 has_net_offloads = MLX5_CAP_GEN(dev->mdev, eth_net_offloads);
4839 if (init_attr->create_flags & IB_WQ_FLAGS_CVLAN_STRIPPING) {
4840 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
4841 mlx5_ib_dbg(dev, "VLAN offloads are not supported\n");
4842 err = -EOPNOTSUPP;
4843 goto out;
4844 }
4845 } else {
4846 MLX5_SET(rqc, rqc, vsd, 1);
4847 }
4848 if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) {
4849 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, scatter_fcs))) {
4850 mlx5_ib_dbg(dev, "Scatter FCS is not supported\n");
4851 err = -EOPNOTSUPP;
4852 goto out;
4853 }
4854 MLX5_SET(rqc, rqc, scatter_fcs, 1);
4855 }
4856 if (init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
4857 if (!(dev->ib_dev.attrs.raw_packet_caps &
4858 IB_RAW_PACKET_CAP_DELAY_DROP)) {
4859 mlx5_ib_dbg(dev, "Delay drop is not supported\n");
4860 err = -EOPNOTSUPP;
4861 goto out;
4862 }
4863 MLX5_SET(rqc, rqc, delay_drop_en, 1);
4864 }
4865 rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
4866 mlx5_ib_populate_pas(rwq->umem, 1UL << rwq->page_shift, rq_pas0, 0);
4867 err = mlx5_core_create_rq_tracked(dev, in, inlen, &rwq->core_qp);
4868 if (!err && init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
4869 err = set_delay_drop(dev);
4870 if (err) {
4871 mlx5_ib_warn(dev, "Failed to enable delay drop err=%d\n",
4872 err);
4873 mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp);
4874 } else {
4875 rwq->create_flags |= MLX5_IB_WQ_FLAGS_DELAY_DROP;
4876 }
4877 }
4878 out:
4879 kvfree(in);
4880 return err;
4881 }
4882
4883 static int set_user_rq_size(struct mlx5_ib_dev *dev,
4884 struct ib_wq_init_attr *wq_init_attr,
4885 struct mlx5_ib_create_wq *ucmd,
4886 struct mlx5_ib_rwq *rwq)
4887 {
4888 /* Sanity check RQ size before proceeding */
4889 if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
4890 return -EINVAL;
4891
4892 if (!ucmd->rq_wqe_count)
4893 return -EINVAL;
4894
4895 rwq->wqe_count = ucmd->rq_wqe_count;
4896 rwq->wqe_shift = ucmd->rq_wqe_shift;
4897 if (check_shl_overflow(rwq->wqe_count, rwq->wqe_shift, &rwq->buf_size))
4898 return -EINVAL;
4899
4900 rwq->log_rq_stride = rwq->wqe_shift;
4901 rwq->log_rq_size = ilog2(rwq->wqe_count);
4902 return 0;
4903 }
4904
4905 static bool log_of_strides_valid(struct mlx5_ib_dev *dev, u32 log_num_strides)
4906 {
4907 if ((log_num_strides > MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES) ||
4908 (log_num_strides < MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES))
4909 return false;
4910
4911 if (!MLX5_CAP_GEN(dev->mdev, ext_stride_num_range) &&
4912 (log_num_strides < MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES))
4913 return false;
4914
4915 return true;
4916 }
4917
4918 static int prepare_user_rq(struct ib_pd *pd,
4919 struct ib_wq_init_attr *init_attr,
4920 struct ib_udata *udata,
4921 struct mlx5_ib_rwq *rwq)
4922 {
4923 struct mlx5_ib_dev *dev = to_mdev(pd->device);
4924 struct mlx5_ib_create_wq ucmd = {};
4925 int err;
4926 size_t required_cmd_sz;
4927
4928 required_cmd_sz = offsetofend(struct mlx5_ib_create_wq,
4929 single_stride_log_num_of_bytes);
4930 if (udata->inlen < required_cmd_sz) {
4931 mlx5_ib_dbg(dev, "invalid inlen\n");
4932 return -EINVAL;
4933 }
4934
4935 if (udata->inlen > sizeof(ucmd) &&
4936 !ib_is_udata_cleared(udata, sizeof(ucmd),
4937 udata->inlen - sizeof(ucmd))) {
4938 mlx5_ib_dbg(dev, "inlen is not supported\n");
4939 return -EOPNOTSUPP;
4940 }
4941
4942 if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
4943 mlx5_ib_dbg(dev, "copy failed\n");
4944 return -EFAULT;
4945 }
4946
4947 if (ucmd.comp_mask & (~MLX5_IB_CREATE_WQ_STRIDING_RQ)) {
4948 mlx5_ib_dbg(dev, "invalid comp mask\n");
4949 return -EOPNOTSUPP;
4950 } else if (ucmd.comp_mask & MLX5_IB_CREATE_WQ_STRIDING_RQ) {
4951 if (!MLX5_CAP_GEN(dev->mdev, striding_rq)) {
4952 mlx5_ib_dbg(dev, "Striding RQ is not supported\n");
4953 return -EOPNOTSUPP;
4954 }
4955 if ((ucmd.single_stride_log_num_of_bytes <
4956 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES) ||
4957 (ucmd.single_stride_log_num_of_bytes >
4958 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES)) {
4959 mlx5_ib_dbg(dev, "Invalid log stride size (%u. Range is %u - %u)\n",
4960 ucmd.single_stride_log_num_of_bytes,
4961 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES,
4962 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES);
4963 return -EINVAL;
4964 }
4965 if (!log_of_strides_valid(dev,
4966 ucmd.single_wqe_log_num_of_strides)) {
4967 mlx5_ib_dbg(
4968 dev,
4969 "Invalid log num strides (%u. Range is %u - %u)\n",
4970 ucmd.single_wqe_log_num_of_strides,
4971 MLX5_CAP_GEN(dev->mdev, ext_stride_num_range) ?
4972 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES :
4973 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES,
4974 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES);
4975 return -EINVAL;
4976 }
4977 rwq->single_stride_log_num_of_bytes =
4978 ucmd.single_stride_log_num_of_bytes;
4979 rwq->log_num_strides = ucmd.single_wqe_log_num_of_strides;
4980 rwq->two_byte_shift_en = !!ucmd.two_byte_shift_en;
4981 rwq->create_flags |= MLX5_IB_WQ_FLAGS_STRIDING_RQ;
4982 }
4983
4984 err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
4985 if (err) {
4986 mlx5_ib_dbg(dev, "err %d\n", err);
4987 return err;
4988 }
4989
4990 err = create_user_rq(dev, pd, udata, rwq, &ucmd);
4991 if (err) {
4992 mlx5_ib_dbg(dev, "err %d\n", err);
4993 return err;
4994 }
4995
4996 rwq->user_index = ucmd.user_index;
4997 return 0;
4998 }
4999
5000 struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
5001 struct ib_wq_init_attr *init_attr,
5002 struct ib_udata *udata)
5003 {
5004 struct mlx5_ib_dev *dev;
5005 struct mlx5_ib_rwq *rwq;
5006 struct mlx5_ib_create_wq_resp resp = {};
5007 size_t min_resp_len;
5008 int err;
5009
5010 if (!udata)
5011 return ERR_PTR(-ENOSYS);
5012
5013 min_resp_len = offsetofend(struct mlx5_ib_create_wq_resp, reserved);
5014 if (udata->outlen && udata->outlen < min_resp_len)
5015 return ERR_PTR(-EINVAL);
5016
5017 if (!capable(CAP_SYS_RAWIO) &&
5018 init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP)
5019 return ERR_PTR(-EPERM);
5020
5021 dev = to_mdev(pd->device);
5022 switch (init_attr->wq_type) {
5023 case IB_WQT_RQ:
5024 rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
5025 if (!rwq)
5026 return ERR_PTR(-ENOMEM);
5027 err = prepare_user_rq(pd, init_attr, udata, rwq);
5028 if (err)
5029 goto err;
5030 err = create_rq(rwq, pd, init_attr);
5031 if (err)
5032 goto err_user_rq;
5033 break;
5034 default:
5035 mlx5_ib_dbg(dev, "unsupported wq type %d\n",
5036 init_attr->wq_type);
5037 return ERR_PTR(-EINVAL);
5038 }
5039
5040 rwq->ibwq.wq_num = rwq->core_qp.qpn;
5041 rwq->ibwq.state = IB_WQS_RESET;
5042 if (udata->outlen) {
5043 resp.response_length = offsetofend(
5044 struct mlx5_ib_create_wq_resp, response_length);
5045 err = ib_copy_to_udata(udata, &resp, resp.response_length);
5046 if (err)
5047 goto err_copy;
5048 }
5049
5050 rwq->core_qp.event = mlx5_ib_wq_event;
5051 rwq->ibwq.event_handler = init_attr->event_handler;
5052 return &rwq->ibwq;
5053
5054 err_copy:
5055 mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp);
5056 err_user_rq:
5057 destroy_user_rq(dev, pd, rwq, udata);
5058 err:
5059 kfree(rwq);
5060 return ERR_PTR(err);
5061 }
5062
5063 int mlx5_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata)
5064 {
5065 struct mlx5_ib_dev *dev = to_mdev(wq->device);
5066 struct mlx5_ib_rwq *rwq = to_mrwq(wq);
5067 int ret;
5068
5069 ret = mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp);
5070 if (ret)
5071 return ret;
5072 destroy_user_rq(dev, wq->pd, rwq, udata);
5073 kfree(rwq);
5074 return 0;
5075 }
5076
5077 int mlx5_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_table,
5078 struct ib_rwq_ind_table_init_attr *init_attr,
5079 struct ib_udata *udata)
5080 {
5081 struct mlx5_ib_rwq_ind_table *rwq_ind_tbl =
5082 to_mrwq_ind_table(ib_rwq_ind_table);
5083 struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_table->device);
5084 int sz = 1 << init_attr->log_ind_tbl_size;
5085 struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
5086 size_t min_resp_len;
5087 int inlen;
5088 int err;
5089 int i;
5090 u32 *in;
5091 void *rqtc;
5092
5093 if (udata->inlen > 0 &&
5094 !ib_is_udata_cleared(udata, 0,
5095 udata->inlen))
5096 return -EOPNOTSUPP;
5097
5098 if (init_attr->log_ind_tbl_size >
5099 MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) {
5100 mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n",
5101 init_attr->log_ind_tbl_size,
5102 MLX5_CAP_GEN(dev->mdev, log_max_rqt_size));
5103 return -EINVAL;
5104 }
5105
5106 min_resp_len =
5107 offsetofend(struct mlx5_ib_create_rwq_ind_tbl_resp, reserved);
5108 if (udata->outlen && udata->outlen < min_resp_len)
5109 return -EINVAL;
5110
5111 inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
5112 in = kvzalloc(inlen, GFP_KERNEL);
5113 if (!in)
5114 return -ENOMEM;
5115
5116 rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
5117
5118 MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
5119 MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
5120
5121 for (i = 0; i < sz; i++)
5122 MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
5123
5124 rwq_ind_tbl->uid = to_mpd(init_attr->ind_tbl[0]->pd)->uid;
5125 MLX5_SET(create_rqt_in, in, uid, rwq_ind_tbl->uid);
5126
5127 err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
5128 kvfree(in);
5129 if (err)
5130 return err;
5131
5132 rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
5133 if (udata->outlen) {
5134 resp.response_length =
5135 offsetofend(struct mlx5_ib_create_rwq_ind_tbl_resp,
5136 response_length);
5137 err = ib_copy_to_udata(udata, &resp, resp.response_length);
5138 if (err)
5139 goto err_copy;
5140 }
5141
5142 return 0;
5143
5144 err_copy:
5145 mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
5146 return err;
5147 }
5148
5149 int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
5150 {
5151 struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
5152 struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
5153
5154 return mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
5155 }
5156
5157 int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
5158 u32 wq_attr_mask, struct ib_udata *udata)
5159 {
5160 struct mlx5_ib_dev *dev = to_mdev(wq->device);
5161 struct mlx5_ib_rwq *rwq = to_mrwq(wq);
5162 struct mlx5_ib_modify_wq ucmd = {};
5163 size_t required_cmd_sz;
5164 int curr_wq_state;
5165 int wq_state;
5166 int inlen;
5167 int err;
5168 void *rqc;
5169 void *in;
5170
5171 required_cmd_sz = offsetofend(struct mlx5_ib_modify_wq, reserved);
5172 if (udata->inlen < required_cmd_sz)
5173 return -EINVAL;
5174
5175 if (udata->inlen > sizeof(ucmd) &&
5176 !ib_is_udata_cleared(udata, sizeof(ucmd),
5177 udata->inlen - sizeof(ucmd)))
5178 return -EOPNOTSUPP;
5179
5180 if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
5181 return -EFAULT;
5182
5183 if (ucmd.comp_mask || ucmd.reserved)
5184 return -EOPNOTSUPP;
5185
5186 inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
5187 in = kvzalloc(inlen, GFP_KERNEL);
5188 if (!in)
5189 return -ENOMEM;
5190
5191 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
5192
5193 curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
5194 wq_attr->curr_wq_state : wq->state;
5195 wq_state = (wq_attr_mask & IB_WQ_STATE) ?
5196 wq_attr->wq_state : curr_wq_state;
5197 if (curr_wq_state == IB_WQS_ERR)
5198 curr_wq_state = MLX5_RQC_STATE_ERR;
5199 if (wq_state == IB_WQS_ERR)
5200 wq_state = MLX5_RQC_STATE_ERR;
5201 MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
5202 MLX5_SET(modify_rq_in, in, uid, to_mpd(wq->pd)->uid);
5203 MLX5_SET(rqc, rqc, state, wq_state);
5204
5205 if (wq_attr_mask & IB_WQ_FLAGS) {
5206 if (wq_attr->flags_mask & IB_WQ_FLAGS_CVLAN_STRIPPING) {
5207 if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
5208 MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
5209 mlx5_ib_dbg(dev, "VLAN offloads are not "
5210 "supported\n");
5211 err = -EOPNOTSUPP;
5212 goto out;
5213 }
5214 MLX5_SET64(modify_rq_in, in, modify_bitmask,
5215 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD);
5216 MLX5_SET(rqc, rqc, vsd,
5217 (wq_attr->flags & IB_WQ_FLAGS_CVLAN_STRIPPING) ? 0 : 1);
5218 }
5219
5220 if (wq_attr->flags_mask & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
5221 mlx5_ib_dbg(dev, "Modifying scatter end padding is not supported\n");
5222 err = -EOPNOTSUPP;
5223 goto out;
5224 }
5225 }
5226
5227 if (curr_wq_state == IB_WQS_RESET && wq_state == IB_WQS_RDY) {
5228 u16 set_id;
5229
5230 set_id = mlx5_ib_get_counters_id(dev, 0);
5231 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
5232 MLX5_SET64(modify_rq_in, in, modify_bitmask,
5233 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
5234 MLX5_SET(rqc, rqc, counter_set_id, set_id);
5235 } else
5236 dev_info_once(
5237 &dev->ib_dev.dev,
5238 "Receive WQ counters are not supported on current FW\n");
5239 }
5240
5241 err = mlx5_core_modify_rq(dev->mdev, rwq->core_qp.qpn, in);
5242 if (!err)
5243 rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
5244
5245 out:
5246 kvfree(in);
5247 return err;
5248 }
5249
5250 struct mlx5_ib_drain_cqe {
5251 struct ib_cqe cqe;
5252 struct completion done;
5253 };
5254
5255 static void mlx5_ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc)
5256 {
5257 struct mlx5_ib_drain_cqe *cqe = container_of(wc->wr_cqe,
5258 struct mlx5_ib_drain_cqe,
5259 cqe);
5260
5261 complete(&cqe->done);
5262 }
5263
5264 /* This function returns only once the drained WR was completed */
5265 static void handle_drain_completion(struct ib_cq *cq,
5266 struct mlx5_ib_drain_cqe *sdrain,
5267 struct mlx5_ib_dev *dev)
5268 {
5269 struct mlx5_core_dev *mdev = dev->mdev;
5270
5271 if (cq->poll_ctx == IB_POLL_DIRECT) {
5272 while (wait_for_completion_timeout(&sdrain->done, HZ / 10) <= 0)
5273 ib_process_cq_direct(cq, -1);
5274 return;
5275 }
5276
5277 if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
5278 struct mlx5_ib_cq *mcq = to_mcq(cq);
5279 bool triggered = false;
5280 unsigned long flags;
5281
5282 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
5283 /* Make sure that the CQ handler won't run if wasn't run yet */
5284 if (!mcq->mcq.reset_notify_added)
5285 mcq->mcq.reset_notify_added = 1;
5286 else
5287 triggered = true;
5288 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
5289
5290 if (triggered) {
5291 /* Wait for any scheduled/running task to be ended */
5292 switch (cq->poll_ctx) {
5293 case IB_POLL_SOFTIRQ:
5294 irq_poll_disable(&cq->iop);
5295 irq_poll_enable(&cq->iop);
5296 break;
5297 case IB_POLL_WORKQUEUE:
5298 cancel_work_sync(&cq->work);
5299 break;
5300 default:
5301 WARN_ON_ONCE(1);
5302 }
5303 }
5304
5305 /* Run the CQ handler - this makes sure that the drain WR will
5306 * be processed if wasn't processed yet.
5307 */
5308 mcq->mcq.comp(&mcq->mcq, NULL);
5309 }
5310
5311 wait_for_completion(&sdrain->done);
5312 }
5313
5314 void mlx5_ib_drain_sq(struct ib_qp *qp)
5315 {
5316 struct ib_cq *cq = qp->send_cq;
5317 struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
5318 struct mlx5_ib_drain_cqe sdrain;
5319 const struct ib_send_wr *bad_swr;
5320 struct ib_rdma_wr swr = {
5321 .wr = {
5322 .next = NULL,
5323 { .wr_cqe = &sdrain.cqe, },
5324 .opcode = IB_WR_RDMA_WRITE,
5325 },
5326 };
5327 int ret;
5328 struct mlx5_ib_dev *dev = to_mdev(qp->device);
5329 struct mlx5_core_dev *mdev = dev->mdev;
5330
5331 ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
5332 if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
5333 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
5334 return;
5335 }
5336
5337 sdrain.cqe.done = mlx5_ib_drain_qp_done;
5338 init_completion(&sdrain.done);
5339
5340 ret = mlx5_ib_post_send_drain(qp, &swr.wr, &bad_swr);
5341 if (ret) {
5342 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
5343 return;
5344 }
5345
5346 handle_drain_completion(cq, &sdrain, dev);
5347 }
5348
5349 void mlx5_ib_drain_rq(struct ib_qp *qp)
5350 {
5351 struct ib_cq *cq = qp->recv_cq;
5352 struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
5353 struct mlx5_ib_drain_cqe rdrain;
5354 struct ib_recv_wr rwr = {};
5355 const struct ib_recv_wr *bad_rwr;
5356 int ret;
5357 struct mlx5_ib_dev *dev = to_mdev(qp->device);
5358 struct mlx5_core_dev *mdev = dev->mdev;
5359
5360 ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
5361 if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
5362 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
5363 return;
5364 }
5365
5366 rwr.wr_cqe = &rdrain.cqe;
5367 rdrain.cqe.done = mlx5_ib_drain_qp_done;
5368 init_completion(&rdrain.done);
5369
5370 ret = mlx5_ib_post_recv_drain(qp, &rwr, &bad_rwr);
5371 if (ret) {
5372 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
5373 return;
5374 }
5375
5376 handle_drain_completion(cq, &rdrain, dev);
5377 }
5378
5379 /**
5380 * Bind a qp to a counter. If @counter is NULL then bind the qp to
5381 * the default counter
5382 */
5383 int mlx5_ib_qp_set_counter(struct ib_qp *qp, struct rdma_counter *counter)
5384 {
5385 struct mlx5_ib_dev *dev = to_mdev(qp->device);
5386 struct mlx5_ib_qp *mqp = to_mqp(qp);
5387 int err = 0;
5388
5389 mutex_lock(&mqp->mutex);
5390 if (mqp->state == IB_QPS_RESET) {
5391 qp->counter = counter;
5392 goto out;
5393 }
5394
5395 if (!MLX5_CAP_GEN(dev->mdev, rts2rts_qp_counters_set_id)) {
5396 err = -EOPNOTSUPP;
5397 goto out;
5398 }
5399
5400 if (mqp->state == IB_QPS_RTS) {
5401 err = __mlx5_ib_qp_set_counter(qp, counter);
5402 if (!err)
5403 qp->counter = counter;
5404
5405 goto out;
5406 }
5407
5408 mqp->counter_pending = 1;
5409 qp->counter = counter;
5410
5411 out:
5412 mutex_unlock(&mqp->mutex);
5413 return err;
5414 }
Linux with added FPC-III support