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 u32 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
is_qp0(enum ib_qp_type qp_type)77 static int is_qp0(enum ib_qp_type qp_type)
78 {
79 return qp_type == IB_QPT_SMI;
80 }
81
is_sqp(enum ib_qp_type qp_type)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 */
mlx5_ib_read_user_wqe_common(struct ib_umem * umem,void * buffer,size_t buflen,int wqe_index,int wq_offset,int wq_wqe_cnt,int wq_wqe_shift,int bcnt,size_t * bytes_copied)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
mlx5_ib_read_kernel_wqe_sq(struct mlx5_ib_qp * qp,int wqe_index,void * buffer,size_t buflen,size_t * bc)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
mlx5_ib_read_user_wqe_sq(struct mlx5_ib_qp * qp,int wqe_index,void * buffer,size_t buflen,size_t * bc)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
mlx5_ib_read_wqe_sq(struct mlx5_ib_qp * qp,int wqe_index,void * buffer,size_t buflen,size_t * bc)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
mlx5_ib_read_user_wqe_rq(struct mlx5_ib_qp * qp,int wqe_index,void * buffer,size_t buflen,size_t * bc)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
mlx5_ib_read_wqe_rq(struct mlx5_ib_qp * qp,int wqe_index,void * buffer,size_t buflen,size_t * bc)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
mlx5_ib_read_user_wqe_srq(struct mlx5_ib_srq * srq,int wqe_index,void * buffer,size_t buflen,size_t * bc)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
mlx5_ib_read_wqe_srq(struct mlx5_ib_srq * srq,int wqe_index,void * buffer,size_t buflen,size_t * bc)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
mlx5_ib_qp_event(struct mlx5_core_qp * qp,int type)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
set_rq_size(struct mlx5_ib_dev * dev,struct ib_qp_cap * cap,int has_rq,struct mlx5_ib_qp * qp,struct mlx5_ib_create_qp * ucmd)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
sq_overhead(struct ib_qp_init_attr * attr)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
calc_send_wqe(struct ib_qp_init_attr * attr)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
get_send_sge(struct ib_qp_init_attr * attr,int wqe_size)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
calc_sq_size(struct mlx5_ib_dev * dev,struct ib_qp_init_attr * attr,struct mlx5_ib_qp * qp)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
set_user_buf_size(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct mlx5_ib_create_qp * ucmd,struct mlx5_ib_qp_base * base,struct ib_qp_init_attr * attr)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
qp_has_rq(struct ib_qp_init_attr * attr)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
max_bfregs(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi)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
num_med_bfreg(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi)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
first_med_bfreg(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi)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
first_hi_bfreg(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi)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
alloc_high_class_bfreg(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi)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
alloc_med_class_bfreg(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi)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
alloc_bfreg(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi)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
mlx5_ib_free_bfreg(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi,int bfregn)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
to_mlx5_state(enum ib_qp_state state)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
to_mlx5_st(enum ib_qp_type type)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
bfregn_to_uar_index(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi,u32 bfregn,bool dyn_bfreg)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
destroy_user_rq(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct mlx5_ib_rwq * rwq,struct ib_udata * udata)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
create_user_rq(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct ib_udata * udata,struct mlx5_ib_rwq * rwq,struct mlx5_ib_create_wq * ucmd)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
adjust_bfregn(struct mlx5_ib_dev * dev,struct mlx5_bfreg_info * bfregi,int bfregn)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
_create_user_qp(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct mlx5_ib_qp * qp,struct ib_udata * udata,struct ib_qp_init_attr * attr,u32 ** in,struct mlx5_ib_create_qp_resp * resp,int * inlen,struct mlx5_ib_qp_base * base,struct mlx5_ib_create_qp * ucmd)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
destroy_qp(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct mlx5_ib_qp_base * base,struct ib_udata * udata)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
_create_kernel_qp(struct mlx5_ib_dev * dev,struct ib_qp_init_attr * init_attr,struct mlx5_ib_qp * qp,u32 ** in,int * inlen,struct mlx5_ib_qp_base * base)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, ts_format, mlx5_get_qp_default_ts(dev->mdev));
1082 MLX5_SET(qpc, qpc, log_page_size, qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1083
1084 /* Set "fast registration enabled" for all kernel QPs */
1085 MLX5_SET(qpc, qpc, fre, 1);
1086 MLX5_SET(qpc, qpc, rlky, 1);
1087
1088 if (qp->flags & MLX5_IB_QP_CREATE_SQPN_QP1)
1089 MLX5_SET(qpc, qpc, deth_sqpn, 1);
1090
1091 mlx5_fill_page_frag_array(&qp->buf,
1092 (__be64 *)MLX5_ADDR_OF(create_qp_in,
1093 *in, pas));
1094
1095 err = mlx5_db_alloc(dev->mdev, &qp->db);
1096 if (err) {
1097 mlx5_ib_dbg(dev, "err %d\n", err);
1098 goto err_free;
1099 }
1100
1101 qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt,
1102 sizeof(*qp->sq.wrid), GFP_KERNEL);
1103 qp->sq.wr_data = kvmalloc_array(qp->sq.wqe_cnt,
1104 sizeof(*qp->sq.wr_data), GFP_KERNEL);
1105 qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt,
1106 sizeof(*qp->rq.wrid), GFP_KERNEL);
1107 qp->sq.w_list = kvmalloc_array(qp->sq.wqe_cnt,
1108 sizeof(*qp->sq.w_list), GFP_KERNEL);
1109 qp->sq.wqe_head = kvmalloc_array(qp->sq.wqe_cnt,
1110 sizeof(*qp->sq.wqe_head), GFP_KERNEL);
1111
1112 if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
1113 !qp->sq.w_list || !qp->sq.wqe_head) {
1114 err = -ENOMEM;
1115 goto err_wrid;
1116 }
1117
1118 return 0;
1119
1120 err_wrid:
1121 kvfree(qp->sq.wqe_head);
1122 kvfree(qp->sq.w_list);
1123 kvfree(qp->sq.wrid);
1124 kvfree(qp->sq.wr_data);
1125 kvfree(qp->rq.wrid);
1126 mlx5_db_free(dev->mdev, &qp->db);
1127
1128 err_free:
1129 kvfree(*in);
1130
1131 err_buf:
1132 mlx5_frag_buf_free(dev->mdev, &qp->buf);
1133 return err;
1134 }
1135
get_rx_type(struct mlx5_ib_qp * qp,struct ib_qp_init_attr * attr)1136 static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
1137 {
1138 if (attr->srq || (qp->type == IB_QPT_XRC_TGT) ||
1139 (qp->type == MLX5_IB_QPT_DCI) || (qp->type == IB_QPT_XRC_INI))
1140 return MLX5_SRQ_RQ;
1141 else if (!qp->has_rq)
1142 return MLX5_ZERO_LEN_RQ;
1143
1144 return MLX5_NON_ZERO_RQ;
1145 }
1146
create_raw_packet_qp_tis(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct mlx5_ib_sq * sq,u32 tdn,struct ib_pd * pd)1147 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1148 struct mlx5_ib_qp *qp,
1149 struct mlx5_ib_sq *sq, u32 tdn,
1150 struct ib_pd *pd)
1151 {
1152 u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {};
1153 void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1154
1155 MLX5_SET(create_tis_in, in, uid, to_mpd(pd)->uid);
1156 MLX5_SET(tisc, tisc, transport_domain, tdn);
1157 if (qp->flags & IB_QP_CREATE_SOURCE_QPN)
1158 MLX5_SET(tisc, tisc, underlay_qpn, qp->underlay_qpn);
1159
1160 return mlx5_core_create_tis(dev->mdev, in, &sq->tisn);
1161 }
1162
destroy_raw_packet_qp_tis(struct mlx5_ib_dev * dev,struct mlx5_ib_sq * sq,struct ib_pd * pd)1163 static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1164 struct mlx5_ib_sq *sq, struct ib_pd *pd)
1165 {
1166 mlx5_cmd_destroy_tis(dev->mdev, sq->tisn, to_mpd(pd)->uid);
1167 }
1168
destroy_flow_rule_vport_sq(struct mlx5_ib_sq * sq)1169 static void destroy_flow_rule_vport_sq(struct mlx5_ib_sq *sq)
1170 {
1171 if (sq->flow_rule)
1172 mlx5_del_flow_rules(sq->flow_rule);
1173 sq->flow_rule = NULL;
1174 }
1175
get_rq_ts_format(struct mlx5_ib_dev * dev,struct mlx5_ib_cq * send_cq)1176 static int get_rq_ts_format(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *send_cq)
1177 {
1178 bool fr_supported =
1179 MLX5_CAP_GEN(dev->mdev, rq_ts_format) ==
1180 MLX5_RQ_TIMESTAMP_FORMAT_CAP_FREE_RUNNING ||
1181 MLX5_CAP_GEN(dev->mdev, rq_ts_format) ==
1182 MLX5_RQ_TIMESTAMP_FORMAT_CAP_FREE_RUNNING_AND_REAL_TIME;
1183
1184 if (send_cq->create_flags & IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION) {
1185 if (!fr_supported) {
1186 mlx5_ib_dbg(dev, "Free running TS format is not supported\n");
1187 return -EOPNOTSUPP;
1188 }
1189 return MLX5_RQC_TIMESTAMP_FORMAT_FREE_RUNNING;
1190 }
1191 return fr_supported ? MLX5_RQC_TIMESTAMP_FORMAT_FREE_RUNNING :
1192 MLX5_RQC_TIMESTAMP_FORMAT_DEFAULT;
1193 }
1194
get_sq_ts_format(struct mlx5_ib_dev * dev,struct mlx5_ib_cq * send_cq)1195 static int get_sq_ts_format(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *send_cq)
1196 {
1197 bool fr_supported =
1198 MLX5_CAP_GEN(dev->mdev, sq_ts_format) ==
1199 MLX5_SQ_TIMESTAMP_FORMAT_CAP_FREE_RUNNING ||
1200 MLX5_CAP_GEN(dev->mdev, sq_ts_format) ==
1201 MLX5_SQ_TIMESTAMP_FORMAT_CAP_FREE_RUNNING_AND_REAL_TIME;
1202
1203 if (send_cq->create_flags & IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION) {
1204 if (!fr_supported) {
1205 mlx5_ib_dbg(dev, "Free running TS format is not supported\n");
1206 return -EOPNOTSUPP;
1207 }
1208 return MLX5_SQC_TIMESTAMP_FORMAT_FREE_RUNNING;
1209 }
1210 return fr_supported ? MLX5_SQC_TIMESTAMP_FORMAT_FREE_RUNNING :
1211 MLX5_SQC_TIMESTAMP_FORMAT_DEFAULT;
1212 }
1213
get_qp_ts_format(struct mlx5_ib_dev * dev,struct mlx5_ib_cq * send_cq,struct mlx5_ib_cq * recv_cq)1214 static int get_qp_ts_format(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *send_cq,
1215 struct mlx5_ib_cq *recv_cq)
1216 {
1217 bool fr_supported =
1218 MLX5_CAP_ROCE(dev->mdev, qp_ts_format) ==
1219 MLX5_QP_TIMESTAMP_FORMAT_CAP_FREE_RUNNING ||
1220 MLX5_CAP_ROCE(dev->mdev, qp_ts_format) ==
1221 MLX5_QP_TIMESTAMP_FORMAT_CAP_FREE_RUNNING_AND_REAL_TIME;
1222 int ts_format = fr_supported ? MLX5_QPC_TIMESTAMP_FORMAT_FREE_RUNNING :
1223 MLX5_QPC_TIMESTAMP_FORMAT_DEFAULT;
1224
1225 if (recv_cq &&
1226 recv_cq->create_flags & IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION)
1227 ts_format = MLX5_QPC_TIMESTAMP_FORMAT_FREE_RUNNING;
1228
1229 if (send_cq &&
1230 send_cq->create_flags & IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION)
1231 ts_format = MLX5_QPC_TIMESTAMP_FORMAT_FREE_RUNNING;
1232
1233 if (ts_format == MLX5_QPC_TIMESTAMP_FORMAT_FREE_RUNNING &&
1234 !fr_supported) {
1235 mlx5_ib_dbg(dev, "Free running TS format is not supported\n");
1236 return -EOPNOTSUPP;
1237 }
1238 return ts_format;
1239 }
1240
create_raw_packet_qp_sq(struct mlx5_ib_dev * dev,struct ib_udata * udata,struct mlx5_ib_sq * sq,void * qpin,struct ib_pd * pd,struct mlx5_ib_cq * cq)1241 static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1242 struct ib_udata *udata,
1243 struct mlx5_ib_sq *sq, void *qpin,
1244 struct ib_pd *pd, struct mlx5_ib_cq *cq)
1245 {
1246 struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer;
1247 __be64 *pas;
1248 void *in;
1249 void *sqc;
1250 void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1251 void *wq;
1252 int inlen;
1253 int err;
1254 unsigned int page_offset_quantized;
1255 unsigned long page_size;
1256 int ts_format;
1257
1258 ts_format = get_sq_ts_format(dev, cq);
1259 if (ts_format < 0)
1260 return ts_format;
1261
1262 sq->ubuffer.umem = ib_umem_get(&dev->ib_dev, ubuffer->buf_addr,
1263 ubuffer->buf_size, 0);
1264 if (IS_ERR(sq->ubuffer.umem))
1265 return PTR_ERR(sq->ubuffer.umem);
1266 page_size = mlx5_umem_find_best_quantized_pgoff(
1267 ubuffer->umem, wq, log_wq_pg_sz, MLX5_ADAPTER_PAGE_SHIFT,
1268 page_offset, 64, &page_offset_quantized);
1269 if (!page_size) {
1270 err = -EINVAL;
1271 goto err_umem;
1272 }
1273
1274 inlen = MLX5_ST_SZ_BYTES(create_sq_in) +
1275 sizeof(u64) *
1276 ib_umem_num_dma_blocks(sq->ubuffer.umem, page_size);
1277 in = kvzalloc(inlen, GFP_KERNEL);
1278 if (!in) {
1279 err = -ENOMEM;
1280 goto err_umem;
1281 }
1282
1283 MLX5_SET(create_sq_in, in, uid, to_mpd(pd)->uid);
1284 sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
1285 MLX5_SET(sqc, sqc, flush_in_error_en, 1);
1286 if (MLX5_CAP_ETH(dev->mdev, multi_pkt_send_wqe))
1287 MLX5_SET(sqc, sqc, allow_multi_pkt_send_wqe, 1);
1288 MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
1289 MLX5_SET(sqc, sqc, ts_format, ts_format);
1290 MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
1291 MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
1292 MLX5_SET(sqc, sqc, tis_lst_sz, 1);
1293 MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
1294 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
1295 MLX5_CAP_ETH(dev->mdev, swp))
1296 MLX5_SET(sqc, sqc, allow_swp, 1);
1297
1298 wq = MLX5_ADDR_OF(sqc, sqc, wq);
1299 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1300 MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1301 MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page));
1302 MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1303 MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1304 MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size));
1305 MLX5_SET(wq, wq, log_wq_pg_sz,
1306 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT);
1307 MLX5_SET(wq, wq, page_offset, page_offset_quantized);
1308
1309 pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1310 mlx5_ib_populate_pas(sq->ubuffer.umem, page_size, pas, 0);
1311
1312 err = mlx5_core_create_sq_tracked(dev, in, inlen, &sq->base.mqp);
1313
1314 kvfree(in);
1315
1316 if (err)
1317 goto err_umem;
1318
1319 return 0;
1320
1321 err_umem:
1322 ib_umem_release(sq->ubuffer.umem);
1323 sq->ubuffer.umem = NULL;
1324
1325 return err;
1326 }
1327
destroy_raw_packet_qp_sq(struct mlx5_ib_dev * dev,struct mlx5_ib_sq * sq)1328 static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1329 struct mlx5_ib_sq *sq)
1330 {
1331 destroy_flow_rule_vport_sq(sq);
1332 mlx5_core_destroy_sq_tracked(dev, &sq->base.mqp);
1333 ib_umem_release(sq->ubuffer.umem);
1334 }
1335
create_raw_packet_qp_rq(struct mlx5_ib_dev * dev,struct mlx5_ib_rq * rq,void * qpin,struct ib_pd * pd,struct mlx5_ib_cq * cq)1336 static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1337 struct mlx5_ib_rq *rq, void *qpin,
1338 struct ib_pd *pd, struct mlx5_ib_cq *cq)
1339 {
1340 struct mlx5_ib_qp *mqp = rq->base.container_mibqp;
1341 __be64 *pas;
1342 void *in;
1343 void *rqc;
1344 void *wq;
1345 void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1346 struct ib_umem *umem = rq->base.ubuffer.umem;
1347 unsigned int page_offset_quantized;
1348 unsigned long page_size = 0;
1349 int ts_format;
1350 size_t inlen;
1351 int err;
1352
1353 ts_format = get_rq_ts_format(dev, cq);
1354 if (ts_format < 0)
1355 return ts_format;
1356
1357 page_size = mlx5_umem_find_best_quantized_pgoff(umem, wq, log_wq_pg_sz,
1358 MLX5_ADAPTER_PAGE_SHIFT,
1359 page_offset, 64,
1360 &page_offset_quantized);
1361 if (!page_size)
1362 return -EINVAL;
1363
1364 inlen = MLX5_ST_SZ_BYTES(create_rq_in) +
1365 sizeof(u64) * ib_umem_num_dma_blocks(umem, page_size);
1366 in = kvzalloc(inlen, GFP_KERNEL);
1367 if (!in)
1368 return -ENOMEM;
1369
1370 MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
1371 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
1372 if (!(rq->flags & MLX5_IB_RQ_CVLAN_STRIPPING))
1373 MLX5_SET(rqc, rqc, vsd, 1);
1374 MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
1375 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
1376 MLX5_SET(rqc, rqc, ts_format, ts_format);
1377 MLX5_SET(rqc, rqc, flush_in_error_en, 1);
1378 MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));
1379 MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));
1380
1381 if (mqp->flags & IB_QP_CREATE_SCATTER_FCS)
1382 MLX5_SET(rqc, rqc, scatter_fcs, 1);
1383
1384 wq = MLX5_ADDR_OF(rqc, rqc, wq);
1385 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1386 if (rq->flags & MLX5_IB_RQ_PCI_WRITE_END_PADDING)
1387 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
1388 MLX5_SET(wq, wq, page_offset, page_offset_quantized);
1389 MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1390 MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1391 MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4);
1392 MLX5_SET(wq, wq, log_wq_pg_sz,
1393 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT);
1394 MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size));
1395
1396 pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1397 mlx5_ib_populate_pas(umem, page_size, pas, 0);
1398
1399 err = mlx5_core_create_rq_tracked(dev, in, inlen, &rq->base.mqp);
1400
1401 kvfree(in);
1402
1403 return err;
1404 }
1405
destroy_raw_packet_qp_rq(struct mlx5_ib_dev * dev,struct mlx5_ib_rq * rq)1406 static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1407 struct mlx5_ib_rq *rq)
1408 {
1409 mlx5_core_destroy_rq_tracked(dev, &rq->base.mqp);
1410 }
1411
destroy_raw_packet_qp_tir(struct mlx5_ib_dev * dev,struct mlx5_ib_rq * rq,u32 qp_flags_en,struct ib_pd * pd)1412 static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1413 struct mlx5_ib_rq *rq,
1414 u32 qp_flags_en,
1415 struct ib_pd *pd)
1416 {
1417 if (qp_flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1418 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
1419 mlx5_ib_disable_lb(dev, false, true);
1420 mlx5_cmd_destroy_tir(dev->mdev, rq->tirn, to_mpd(pd)->uid);
1421 }
1422
create_raw_packet_qp_tir(struct mlx5_ib_dev * dev,struct mlx5_ib_rq * rq,u32 tdn,u32 * qp_flags_en,struct ib_pd * pd,u32 * out)1423 static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1424 struct mlx5_ib_rq *rq, u32 tdn,
1425 u32 *qp_flags_en, struct ib_pd *pd,
1426 u32 *out)
1427 {
1428 u8 lb_flag = 0;
1429 u32 *in;
1430 void *tirc;
1431 int inlen;
1432 int err;
1433
1434 inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1435 in = kvzalloc(inlen, GFP_KERNEL);
1436 if (!in)
1437 return -ENOMEM;
1438
1439 MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
1440 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1441 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
1442 MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn);
1443 MLX5_SET(tirc, tirc, transport_domain, tdn);
1444 if (*qp_flags_en & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1445 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1446
1447 if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC)
1448 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1449
1450 if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)
1451 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
1452
1453 if (dev->is_rep) {
1454 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1455 *qp_flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
1456 }
1457
1458 MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
1459 MLX5_SET(create_tir_in, in, opcode, MLX5_CMD_OP_CREATE_TIR);
1460 err = mlx5_cmd_exec_inout(dev->mdev, create_tir, in, out);
1461 rq->tirn = MLX5_GET(create_tir_out, out, tirn);
1462 if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
1463 err = mlx5_ib_enable_lb(dev, false, true);
1464
1465 if (err)
1466 destroy_raw_packet_qp_tir(dev, rq, 0, pd);
1467 }
1468 kvfree(in);
1469
1470 return err;
1471 }
1472
create_raw_packet_qp(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,u32 * in,size_t inlen,struct ib_pd * pd,struct ib_udata * udata,struct mlx5_ib_create_qp_resp * resp,struct ib_qp_init_attr * init_attr)1473 static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1474 u32 *in, size_t inlen, struct ib_pd *pd,
1475 struct ib_udata *udata,
1476 struct mlx5_ib_create_qp_resp *resp,
1477 struct ib_qp_init_attr *init_attr)
1478 {
1479 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1480 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1481 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1482 struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
1483 udata, struct mlx5_ib_ucontext, ibucontext);
1484 int err;
1485 u32 tdn = mucontext->tdn;
1486 u16 uid = to_mpd(pd)->uid;
1487 u32 out[MLX5_ST_SZ_DW(create_tir_out)] = {};
1488
1489 if (!qp->sq.wqe_cnt && !qp->rq.wqe_cnt)
1490 return -EINVAL;
1491 if (qp->sq.wqe_cnt) {
1492 err = create_raw_packet_qp_tis(dev, qp, sq, tdn, pd);
1493 if (err)
1494 return err;
1495
1496 err = create_raw_packet_qp_sq(dev, udata, sq, in, pd,
1497 to_mcq(init_attr->send_cq));
1498 if (err)
1499 goto err_destroy_tis;
1500
1501 if (uid) {
1502 resp->tisn = sq->tisn;
1503 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TISN;
1504 resp->sqn = sq->base.mqp.qpn;
1505 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_SQN;
1506 }
1507
1508 sq->base.container_mibqp = qp;
1509 sq->base.mqp.event = mlx5_ib_qp_event;
1510 }
1511
1512 if (qp->rq.wqe_cnt) {
1513 rq->base.container_mibqp = qp;
1514
1515 if (qp->flags & IB_QP_CREATE_CVLAN_STRIPPING)
1516 rq->flags |= MLX5_IB_RQ_CVLAN_STRIPPING;
1517 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING)
1518 rq->flags |= MLX5_IB_RQ_PCI_WRITE_END_PADDING;
1519 err = create_raw_packet_qp_rq(dev, rq, in, pd,
1520 to_mcq(init_attr->recv_cq));
1521 if (err)
1522 goto err_destroy_sq;
1523
1524 err = create_raw_packet_qp_tir(dev, rq, tdn, &qp->flags_en, pd,
1525 out);
1526 if (err)
1527 goto err_destroy_rq;
1528
1529 if (uid) {
1530 resp->rqn = rq->base.mqp.qpn;
1531 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_RQN;
1532 resp->tirn = rq->tirn;
1533 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
1534 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) ||
1535 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2)) {
1536 resp->tir_icm_addr = MLX5_GET(
1537 create_tir_out, out, icm_address_31_0);
1538 resp->tir_icm_addr |=
1539 (u64)MLX5_GET(create_tir_out, out,
1540 icm_address_39_32)
1541 << 32;
1542 resp->tir_icm_addr |=
1543 (u64)MLX5_GET(create_tir_out, out,
1544 icm_address_63_40)
1545 << 40;
1546 resp->comp_mask |=
1547 MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
1548 }
1549 }
1550 }
1551
1552 qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
1553 rq->base.mqp.qpn;
1554 return 0;
1555
1556 err_destroy_rq:
1557 destroy_raw_packet_qp_rq(dev, rq);
1558 err_destroy_sq:
1559 if (!qp->sq.wqe_cnt)
1560 return err;
1561 destroy_raw_packet_qp_sq(dev, sq);
1562 err_destroy_tis:
1563 destroy_raw_packet_qp_tis(dev, sq, pd);
1564
1565 return err;
1566 }
1567
destroy_raw_packet_qp(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp)1568 static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev,
1569 struct mlx5_ib_qp *qp)
1570 {
1571 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1572 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1573 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1574
1575 if (qp->rq.wqe_cnt) {
1576 destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, qp->ibqp.pd);
1577 destroy_raw_packet_qp_rq(dev, rq);
1578 }
1579
1580 if (qp->sq.wqe_cnt) {
1581 destroy_raw_packet_qp_sq(dev, sq);
1582 destroy_raw_packet_qp_tis(dev, sq, qp->ibqp.pd);
1583 }
1584 }
1585
raw_packet_qp_copy_info(struct mlx5_ib_qp * qp,struct mlx5_ib_raw_packet_qp * raw_packet_qp)1586 static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
1587 struct mlx5_ib_raw_packet_qp *raw_packet_qp)
1588 {
1589 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1590 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1591
1592 sq->sq = &qp->sq;
1593 rq->rq = &qp->rq;
1594 sq->doorbell = &qp->db;
1595 rq->doorbell = &qp->db;
1596 }
1597
destroy_rss_raw_qp_tir(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp)1598 static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1599 {
1600 if (qp->flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1601 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
1602 mlx5_ib_disable_lb(dev, false, true);
1603 mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
1604 to_mpd(qp->ibqp.pd)->uid);
1605 }
1606
1607 struct mlx5_create_qp_params {
1608 struct ib_udata *udata;
1609 size_t inlen;
1610 size_t outlen;
1611 size_t ucmd_size;
1612 void *ucmd;
1613 u8 is_rss_raw : 1;
1614 struct ib_qp_init_attr *attr;
1615 u32 uidx;
1616 struct mlx5_ib_create_qp_resp resp;
1617 };
1618
create_rss_raw_qp_tir(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct mlx5_ib_qp * qp,struct mlx5_create_qp_params * params)1619 static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1620 struct mlx5_ib_qp *qp,
1621 struct mlx5_create_qp_params *params)
1622 {
1623 struct ib_qp_init_attr *init_attr = params->attr;
1624 struct mlx5_ib_create_qp_rss *ucmd = params->ucmd;
1625 struct ib_udata *udata = params->udata;
1626 struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
1627 udata, struct mlx5_ib_ucontext, ibucontext);
1628 int inlen;
1629 int outlen;
1630 int err;
1631 u32 *in;
1632 u32 *out;
1633 void *tirc;
1634 void *hfso;
1635 u32 selected_fields = 0;
1636 u32 outer_l4;
1637 u32 tdn = mucontext->tdn;
1638 u8 lb_flag = 0;
1639
1640 if (ucmd->comp_mask) {
1641 mlx5_ib_dbg(dev, "invalid comp mask\n");
1642 return -EOPNOTSUPP;
1643 }
1644
1645 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_INNER &&
1646 !(ucmd->flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)) {
1647 mlx5_ib_dbg(dev, "Tunnel offloads must be set for inner RSS\n");
1648 return -EOPNOTSUPP;
1649 }
1650
1651 if (dev->is_rep)
1652 qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
1653
1654 if (qp->flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC)
1655 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1656
1657 if (qp->flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)
1658 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
1659
1660 inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1661 outlen = MLX5_ST_SZ_BYTES(create_tir_out);
1662 in = kvzalloc(inlen + outlen, GFP_KERNEL);
1663 if (!in)
1664 return -ENOMEM;
1665
1666 out = in + MLX5_ST_SZ_DW(create_tir_in);
1667 MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
1668 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1669 MLX5_SET(tirc, tirc, disp_type,
1670 MLX5_TIRC_DISP_TYPE_INDIRECT);
1671 MLX5_SET(tirc, tirc, indirect_table,
1672 init_attr->rwq_ind_tbl->ind_tbl_num);
1673 MLX5_SET(tirc, tirc, transport_domain, tdn);
1674
1675 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1676
1677 if (ucmd->flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1678 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1679
1680 MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
1681
1682 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_INNER)
1683 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner);
1684 else
1685 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1686
1687 switch (ucmd->rx_hash_function) {
1688 case MLX5_RX_HASH_FUNC_TOEPLITZ:
1689 {
1690 void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
1691 size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
1692
1693 if (len != ucmd->rx_key_len) {
1694 err = -EINVAL;
1695 goto err;
1696 }
1697
1698 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
1699 memcpy(rss_key, ucmd->rx_hash_key, len);
1700 break;
1701 }
1702 default:
1703 err = -EOPNOTSUPP;
1704 goto err;
1705 }
1706
1707 if (!ucmd->rx_hash_fields_mask) {
1708 /* special case when this TIR serves as steering entry without hashing */
1709 if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
1710 goto create_tir;
1711 err = -EINVAL;
1712 goto err;
1713 }
1714
1715 if (((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1716 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
1717 ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1718 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
1719 err = -EINVAL;
1720 goto err;
1721 }
1722
1723 /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
1724 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1725 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
1726 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1727 MLX5_L3_PROT_TYPE_IPV4);
1728 else if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1729 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1730 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1731 MLX5_L3_PROT_TYPE_IPV6);
1732
1733 outer_l4 = ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1734 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1735 << 0 |
1736 ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1737 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1738 << 1 |
1739 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI) << 2;
1740
1741 /* Check that only one l4 protocol is set */
1742 if (outer_l4 & (outer_l4 - 1)) {
1743 err = -EINVAL;
1744 goto err;
1745 }
1746
1747 /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
1748 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1749 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1750 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1751 MLX5_L4_PROT_TYPE_TCP);
1752 else if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1753 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1754 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1755 MLX5_L4_PROT_TYPE_UDP);
1756
1757 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1758 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
1759 selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
1760
1761 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
1762 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1763 selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
1764
1765 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1766 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
1767 selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
1768
1769 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
1770 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1771 selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
1772
1773 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI)
1774 selected_fields |= MLX5_HASH_FIELD_SEL_IPSEC_SPI;
1775
1776 MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
1777
1778 create_tir:
1779 MLX5_SET(create_tir_in, in, opcode, MLX5_CMD_OP_CREATE_TIR);
1780 err = mlx5_cmd_exec_inout(dev->mdev, create_tir, in, out);
1781
1782 qp->rss_qp.tirn = MLX5_GET(create_tir_out, out, tirn);
1783 if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
1784 err = mlx5_ib_enable_lb(dev, false, true);
1785
1786 if (err)
1787 mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
1788 to_mpd(pd)->uid);
1789 }
1790
1791 if (err)
1792 goto err;
1793
1794 if (mucontext->devx_uid) {
1795 params->resp.comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
1796 params->resp.tirn = qp->rss_qp.tirn;
1797 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) ||
1798 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2)) {
1799 params->resp.tir_icm_addr =
1800 MLX5_GET(create_tir_out, out, icm_address_31_0);
1801 params->resp.tir_icm_addr |=
1802 (u64)MLX5_GET(create_tir_out, out,
1803 icm_address_39_32)
1804 << 32;
1805 params->resp.tir_icm_addr |=
1806 (u64)MLX5_GET(create_tir_out, out,
1807 icm_address_63_40)
1808 << 40;
1809 params->resp.comp_mask |=
1810 MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
1811 }
1812 }
1813
1814 kvfree(in);
1815 /* qpn is reserved for that QP */
1816 qp->trans_qp.base.mqp.qpn = 0;
1817 qp->is_rss = true;
1818 return 0;
1819
1820 err:
1821 kvfree(in);
1822 return err;
1823 }
1824
configure_requester_scat_cqe(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct ib_qp_init_attr * init_attr,void * qpc)1825 static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
1826 struct mlx5_ib_qp *qp,
1827 struct ib_qp_init_attr *init_attr,
1828 void *qpc)
1829 {
1830 int scqe_sz;
1831 bool allow_scat_cqe = false;
1832
1833 allow_scat_cqe = qp->flags_en & MLX5_QP_FLAG_ALLOW_SCATTER_CQE;
1834
1835 if (!allow_scat_cqe && init_attr->sq_sig_type != IB_SIGNAL_ALL_WR)
1836 return;
1837
1838 scqe_sz = mlx5_ib_get_cqe_size(init_attr->send_cq);
1839 if (scqe_sz == 128) {
1840 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA64_CQE);
1841 return;
1842 }
1843
1844 if (init_attr->qp_type != MLX5_IB_QPT_DCI ||
1845 MLX5_CAP_GEN(dev->mdev, dc_req_scat_data_cqe))
1846 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE);
1847 }
1848
atomic_size_to_mode(int size_mask)1849 static int atomic_size_to_mode(int size_mask)
1850 {
1851 /* driver does not support atomic_size > 256B
1852 * and does not know how to translate bigger sizes
1853 */
1854 int supported_size_mask = size_mask & 0x1ff;
1855 int log_max_size;
1856
1857 if (!supported_size_mask)
1858 return -EOPNOTSUPP;
1859
1860 log_max_size = __fls(supported_size_mask);
1861
1862 if (log_max_size > 3)
1863 return log_max_size;
1864
1865 return MLX5_ATOMIC_MODE_8B;
1866 }
1867
get_atomic_mode(struct mlx5_ib_dev * dev,enum ib_qp_type qp_type)1868 static int get_atomic_mode(struct mlx5_ib_dev *dev,
1869 enum ib_qp_type qp_type)
1870 {
1871 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
1872 u8 atomic = MLX5_CAP_GEN(dev->mdev, atomic);
1873 int atomic_mode = -EOPNOTSUPP;
1874 int atomic_size_mask;
1875
1876 if (!atomic)
1877 return -EOPNOTSUPP;
1878
1879 if (qp_type == MLX5_IB_QPT_DCT)
1880 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_dc);
1881 else
1882 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
1883
1884 if ((atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_CMP_SWAP) ||
1885 (atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_FETCH_ADD))
1886 atomic_mode = atomic_size_to_mode(atomic_size_mask);
1887
1888 if (atomic_mode <= 0 &&
1889 (atomic_operations & MLX5_ATOMIC_OPS_CMP_SWAP &&
1890 atomic_operations & MLX5_ATOMIC_OPS_FETCH_ADD))
1891 atomic_mode = MLX5_ATOMIC_MODE_IB_COMP;
1892
1893 return atomic_mode;
1894 }
1895
create_xrc_tgt_qp(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct mlx5_create_qp_params * params)1896 static int create_xrc_tgt_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1897 struct mlx5_create_qp_params *params)
1898 {
1899 struct mlx5_ib_create_qp *ucmd = params->ucmd;
1900 struct ib_qp_init_attr *attr = params->attr;
1901 u32 uidx = params->uidx;
1902 struct mlx5_ib_resources *devr = &dev->devr;
1903 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {};
1904 int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
1905 struct mlx5_core_dev *mdev = dev->mdev;
1906 struct mlx5_ib_qp_base *base;
1907 unsigned long flags;
1908 void *qpc;
1909 u32 *in;
1910 int err;
1911
1912 if (attr->sq_sig_type == IB_SIGNAL_ALL_WR)
1913 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
1914
1915 in = kvzalloc(inlen, GFP_KERNEL);
1916 if (!in)
1917 return -ENOMEM;
1918
1919 if (MLX5_CAP_GEN(mdev, ece_support) && ucmd)
1920 MLX5_SET(create_qp_in, in, ece, ucmd->ece_options);
1921 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
1922
1923 MLX5_SET(qpc, qpc, st, MLX5_QP_ST_XRC);
1924 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
1925 MLX5_SET(qpc, qpc, pd, to_mpd(devr->p0)->pdn);
1926
1927 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
1928 MLX5_SET(qpc, qpc, block_lb_mc, 1);
1929 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL)
1930 MLX5_SET(qpc, qpc, cd_master, 1);
1931 if (qp->flags & IB_QP_CREATE_MANAGED_SEND)
1932 MLX5_SET(qpc, qpc, cd_slave_send, 1);
1933 if (qp->flags & IB_QP_CREATE_MANAGED_RECV)
1934 MLX5_SET(qpc, qpc, cd_slave_receive, 1);
1935
1936 MLX5_SET(qpc, qpc, ts_format, mlx5_get_qp_default_ts(dev->mdev));
1937 MLX5_SET(qpc, qpc, rq_type, MLX5_SRQ_RQ);
1938 MLX5_SET(qpc, qpc, no_sq, 1);
1939 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
1940 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(devr->c0)->mcq.cqn);
1941 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
1942 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(attr->xrcd)->xrcdn);
1943 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
1944
1945 /* 0xffffff means we ask to work with cqe version 0 */
1946 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
1947 MLX5_SET(qpc, qpc, user_index, uidx);
1948
1949 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) {
1950 MLX5_SET(qpc, qpc, end_padding_mode,
1951 MLX5_WQ_END_PAD_MODE_ALIGN);
1952 /* Special case to clean flag */
1953 qp->flags &= ~IB_QP_CREATE_PCI_WRITE_END_PADDING;
1954 }
1955
1956 base = &qp->trans_qp.base;
1957 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out);
1958 kvfree(in);
1959 if (err)
1960 return err;
1961
1962 base->container_mibqp = qp;
1963 base->mqp.event = mlx5_ib_qp_event;
1964 if (MLX5_CAP_GEN(mdev, ece_support))
1965 params->resp.ece_options = MLX5_GET(create_qp_out, out, ece);
1966
1967 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
1968 list_add_tail(&qp->qps_list, &dev->qp_list);
1969 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
1970
1971 qp->trans_qp.xrcdn = to_mxrcd(attr->xrcd)->xrcdn;
1972 return 0;
1973 }
1974
create_user_qp(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct mlx5_ib_qp * qp,struct mlx5_create_qp_params * params)1975 static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1976 struct mlx5_ib_qp *qp,
1977 struct mlx5_create_qp_params *params)
1978 {
1979 struct ib_qp_init_attr *init_attr = params->attr;
1980 struct mlx5_ib_create_qp *ucmd = params->ucmd;
1981 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {};
1982 struct ib_udata *udata = params->udata;
1983 u32 uidx = params->uidx;
1984 struct mlx5_ib_resources *devr = &dev->devr;
1985 int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
1986 struct mlx5_core_dev *mdev = dev->mdev;
1987 struct mlx5_ib_cq *send_cq;
1988 struct mlx5_ib_cq *recv_cq;
1989 unsigned long flags;
1990 struct mlx5_ib_qp_base *base;
1991 int ts_format;
1992 int mlx5_st;
1993 void *qpc;
1994 u32 *in;
1995 int err;
1996
1997 spin_lock_init(&qp->sq.lock);
1998 spin_lock_init(&qp->rq.lock);
1999
2000 mlx5_st = to_mlx5_st(qp->type);
2001 if (mlx5_st < 0)
2002 return -EINVAL;
2003
2004 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
2005 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
2006
2007 if (qp->flags & IB_QP_CREATE_SOURCE_QPN)
2008 qp->underlay_qpn = init_attr->source_qpn;
2009
2010 base = (init_attr->qp_type == IB_QPT_RAW_PACKET ||
2011 qp->flags & IB_QP_CREATE_SOURCE_QPN) ?
2012 &qp->raw_packet_qp.rq.base :
2013 &qp->trans_qp.base;
2014
2015 qp->has_rq = qp_has_rq(init_attr);
2016 err = set_rq_size(dev, &init_attr->cap, qp->has_rq, qp, ucmd);
2017 if (err) {
2018 mlx5_ib_dbg(dev, "err %d\n", err);
2019 return err;
2020 }
2021
2022 if (ucmd->rq_wqe_shift != qp->rq.wqe_shift ||
2023 ucmd->rq_wqe_count != qp->rq.wqe_cnt)
2024 return -EINVAL;
2025
2026 if (ucmd->sq_wqe_count > (1 << MLX5_CAP_GEN(mdev, log_max_qp_sz)))
2027 return -EINVAL;
2028
2029 if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2030 ts_format = get_qp_ts_format(dev, to_mcq(init_attr->send_cq),
2031 to_mcq(init_attr->recv_cq));
2032 if (ts_format < 0)
2033 return ts_format;
2034 }
2035
2036 err = _create_user_qp(dev, pd, qp, udata, init_attr, &in, ¶ms->resp,
2037 &inlen, base, ucmd);
2038 if (err)
2039 return err;
2040
2041 if (is_sqp(init_attr->qp_type))
2042 qp->port = init_attr->port_num;
2043
2044 if (MLX5_CAP_GEN(mdev, ece_support))
2045 MLX5_SET(create_qp_in, in, ece, ucmd->ece_options);
2046 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
2047
2048 MLX5_SET(qpc, qpc, st, mlx5_st);
2049 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
2050 MLX5_SET(qpc, qpc, pd, to_mpd(pd)->pdn);
2051
2052 if (qp->flags_en & MLX5_QP_FLAG_SIGNATURE)
2053 MLX5_SET(qpc, qpc, wq_signature, 1);
2054
2055 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
2056 MLX5_SET(qpc, qpc, block_lb_mc, 1);
2057
2058 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL)
2059 MLX5_SET(qpc, qpc, cd_master, 1);
2060 if (qp->flags & IB_QP_CREATE_MANAGED_SEND)
2061 MLX5_SET(qpc, qpc, cd_slave_send, 1);
2062 if (qp->flags & IB_QP_CREATE_MANAGED_RECV)
2063 MLX5_SET(qpc, qpc, cd_slave_receive, 1);
2064 if (qp->flags_en & MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE)
2065 MLX5_SET(qpc, qpc, req_e2e_credit_mode, 1);
2066 if ((qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) &&
2067 (init_attr->qp_type == IB_QPT_RC ||
2068 init_attr->qp_type == IB_QPT_UC)) {
2069 int rcqe_sz = mlx5_ib_get_cqe_size(init_attr->recv_cq);
2070
2071 MLX5_SET(qpc, qpc, cs_res,
2072 rcqe_sz == 128 ? MLX5_RES_SCAT_DATA64_CQE :
2073 MLX5_RES_SCAT_DATA32_CQE);
2074 }
2075 if ((qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) &&
2076 (qp->type == MLX5_IB_QPT_DCI || qp->type == IB_QPT_RC))
2077 configure_requester_scat_cqe(dev, qp, init_attr, qpc);
2078
2079 if (qp->rq.wqe_cnt) {
2080 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
2081 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
2082 }
2083
2084 if (init_attr->qp_type != IB_QPT_RAW_PACKET)
2085 MLX5_SET(qpc, qpc, ts_format, ts_format);
2086
2087 MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr));
2088
2089 if (qp->sq.wqe_cnt) {
2090 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
2091 } else {
2092 MLX5_SET(qpc, qpc, no_sq, 1);
2093 if (init_attr->srq &&
2094 init_attr->srq->srq_type == IB_SRQT_TM)
2095 MLX5_SET(qpc, qpc, offload_type,
2096 MLX5_QPC_OFFLOAD_TYPE_RNDV);
2097 }
2098
2099 /* Set default resources */
2100 switch (init_attr->qp_type) {
2101 case IB_QPT_XRC_INI:
2102 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
2103 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1);
2104 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
2105 break;
2106 default:
2107 if (init_attr->srq) {
2108 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn0);
2109 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(init_attr->srq)->msrq.srqn);
2110 } else {
2111 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1);
2112 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s1)->msrq.srqn);
2113 }
2114 }
2115
2116 if (init_attr->send_cq)
2117 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(init_attr->send_cq)->mcq.cqn);
2118
2119 if (init_attr->recv_cq)
2120 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(init_attr->recv_cq)->mcq.cqn);
2121
2122 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
2123
2124 /* 0xffffff means we ask to work with cqe version 0 */
2125 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
2126 MLX5_SET(qpc, qpc, user_index, uidx);
2127
2128 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING &&
2129 init_attr->qp_type != IB_QPT_RAW_PACKET) {
2130 MLX5_SET(qpc, qpc, end_padding_mode,
2131 MLX5_WQ_END_PAD_MODE_ALIGN);
2132 /* Special case to clean flag */
2133 qp->flags &= ~IB_QP_CREATE_PCI_WRITE_END_PADDING;
2134 }
2135
2136 if (init_attr->qp_type == IB_QPT_RAW_PACKET ||
2137 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
2138 qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd->sq_buf_addr;
2139 raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
2140 err = create_raw_packet_qp(dev, qp, in, inlen, pd, udata,
2141 ¶ms->resp, init_attr);
2142 } else
2143 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out);
2144
2145 kvfree(in);
2146 if (err)
2147 goto err_create;
2148
2149 base->container_mibqp = qp;
2150 base->mqp.event = mlx5_ib_qp_event;
2151 if (MLX5_CAP_GEN(mdev, ece_support))
2152 params->resp.ece_options = MLX5_GET(create_qp_out, out, ece);
2153
2154 get_cqs(qp->type, init_attr->send_cq, init_attr->recv_cq,
2155 &send_cq, &recv_cq);
2156 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2157 mlx5_ib_lock_cqs(send_cq, recv_cq);
2158 /* Maintain device to QPs access, needed for further handling via reset
2159 * flow
2160 */
2161 list_add_tail(&qp->qps_list, &dev->qp_list);
2162 /* Maintain CQ to QPs access, needed for further handling via reset flow
2163 */
2164 if (send_cq)
2165 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
2166 if (recv_cq)
2167 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
2168 mlx5_ib_unlock_cqs(send_cq, recv_cq);
2169 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2170
2171 return 0;
2172
2173 err_create:
2174 destroy_qp(dev, qp, base, udata);
2175 return err;
2176 }
2177
create_kernel_qp(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct mlx5_ib_qp * qp,struct mlx5_create_qp_params * params)2178 static int create_kernel_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
2179 struct mlx5_ib_qp *qp,
2180 struct mlx5_create_qp_params *params)
2181 {
2182 struct ib_qp_init_attr *attr = params->attr;
2183 u32 uidx = params->uidx;
2184 struct mlx5_ib_resources *devr = &dev->devr;
2185 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {};
2186 int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
2187 struct mlx5_core_dev *mdev = dev->mdev;
2188 struct mlx5_ib_cq *send_cq;
2189 struct mlx5_ib_cq *recv_cq;
2190 unsigned long flags;
2191 struct mlx5_ib_qp_base *base;
2192 int mlx5_st;
2193 void *qpc;
2194 u32 *in;
2195 int err;
2196
2197 spin_lock_init(&qp->sq.lock);
2198 spin_lock_init(&qp->rq.lock);
2199
2200 mlx5_st = to_mlx5_st(qp->type);
2201 if (mlx5_st < 0)
2202 return -EINVAL;
2203
2204 if (attr->sq_sig_type == IB_SIGNAL_ALL_WR)
2205 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
2206
2207 base = &qp->trans_qp.base;
2208
2209 qp->has_rq = qp_has_rq(attr);
2210 err = set_rq_size(dev, &attr->cap, qp->has_rq, qp, NULL);
2211 if (err) {
2212 mlx5_ib_dbg(dev, "err %d\n", err);
2213 return err;
2214 }
2215
2216 err = _create_kernel_qp(dev, attr, qp, &in, &inlen, base);
2217 if (err)
2218 return err;
2219
2220 if (is_sqp(attr->qp_type))
2221 qp->port = attr->port_num;
2222
2223 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
2224
2225 MLX5_SET(qpc, qpc, st, mlx5_st);
2226 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
2227
2228 if (attr->qp_type != MLX5_IB_QPT_REG_UMR)
2229 MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
2230 else
2231 MLX5_SET(qpc, qpc, latency_sensitive, 1);
2232
2233
2234 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
2235 MLX5_SET(qpc, qpc, block_lb_mc, 1);
2236
2237 if (qp->rq.wqe_cnt) {
2238 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
2239 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
2240 }
2241
2242 MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, attr));
2243
2244 if (qp->sq.wqe_cnt)
2245 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
2246 else
2247 MLX5_SET(qpc, qpc, no_sq, 1);
2248
2249 if (attr->srq) {
2250 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn0);
2251 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn,
2252 to_msrq(attr->srq)->msrq.srqn);
2253 } else {
2254 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1);
2255 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn,
2256 to_msrq(devr->s1)->msrq.srqn);
2257 }
2258
2259 if (attr->send_cq)
2260 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(attr->send_cq)->mcq.cqn);
2261
2262 if (attr->recv_cq)
2263 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(attr->recv_cq)->mcq.cqn);
2264
2265 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
2266
2267 /* 0xffffff means we ask to work with cqe version 0 */
2268 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
2269 MLX5_SET(qpc, qpc, user_index, uidx);
2270
2271 /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
2272 if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO)
2273 MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
2274
2275 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out);
2276 kvfree(in);
2277 if (err)
2278 goto err_create;
2279
2280 base->container_mibqp = qp;
2281 base->mqp.event = mlx5_ib_qp_event;
2282
2283 get_cqs(qp->type, attr->send_cq, attr->recv_cq,
2284 &send_cq, &recv_cq);
2285 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2286 mlx5_ib_lock_cqs(send_cq, recv_cq);
2287 /* Maintain device to QPs access, needed for further handling via reset
2288 * flow
2289 */
2290 list_add_tail(&qp->qps_list, &dev->qp_list);
2291 /* Maintain CQ to QPs access, needed for further handling via reset flow
2292 */
2293 if (send_cq)
2294 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
2295 if (recv_cq)
2296 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
2297 mlx5_ib_unlock_cqs(send_cq, recv_cq);
2298 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2299
2300 return 0;
2301
2302 err_create:
2303 destroy_qp(dev, qp, base, NULL);
2304 return err;
2305 }
2306
mlx5_ib_lock_cqs(struct mlx5_ib_cq * send_cq,struct mlx5_ib_cq * recv_cq)2307 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2308 __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
2309 {
2310 if (send_cq) {
2311 if (recv_cq) {
2312 if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
2313 spin_lock(&send_cq->lock);
2314 spin_lock_nested(&recv_cq->lock,
2315 SINGLE_DEPTH_NESTING);
2316 } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2317 spin_lock(&send_cq->lock);
2318 __acquire(&recv_cq->lock);
2319 } else {
2320 spin_lock(&recv_cq->lock);
2321 spin_lock_nested(&send_cq->lock,
2322 SINGLE_DEPTH_NESTING);
2323 }
2324 } else {
2325 spin_lock(&send_cq->lock);
2326 __acquire(&recv_cq->lock);
2327 }
2328 } else if (recv_cq) {
2329 spin_lock(&recv_cq->lock);
2330 __acquire(&send_cq->lock);
2331 } else {
2332 __acquire(&send_cq->lock);
2333 __acquire(&recv_cq->lock);
2334 }
2335 }
2336
mlx5_ib_unlock_cqs(struct mlx5_ib_cq * send_cq,struct mlx5_ib_cq * recv_cq)2337 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2338 __releases(&send_cq->lock) __releases(&recv_cq->lock)
2339 {
2340 if (send_cq) {
2341 if (recv_cq) {
2342 if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
2343 spin_unlock(&recv_cq->lock);
2344 spin_unlock(&send_cq->lock);
2345 } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2346 __release(&recv_cq->lock);
2347 spin_unlock(&send_cq->lock);
2348 } else {
2349 spin_unlock(&send_cq->lock);
2350 spin_unlock(&recv_cq->lock);
2351 }
2352 } else {
2353 __release(&recv_cq->lock);
2354 spin_unlock(&send_cq->lock);
2355 }
2356 } else if (recv_cq) {
2357 __release(&send_cq->lock);
2358 spin_unlock(&recv_cq->lock);
2359 } else {
2360 __release(&recv_cq->lock);
2361 __release(&send_cq->lock);
2362 }
2363 }
2364
get_cqs(enum ib_qp_type qp_type,struct ib_cq * ib_send_cq,struct ib_cq * ib_recv_cq,struct mlx5_ib_cq ** send_cq,struct mlx5_ib_cq ** recv_cq)2365 static void get_cqs(enum ib_qp_type qp_type,
2366 struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
2367 struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
2368 {
2369 switch (qp_type) {
2370 case IB_QPT_XRC_TGT:
2371 *send_cq = NULL;
2372 *recv_cq = NULL;
2373 break;
2374 case MLX5_IB_QPT_REG_UMR:
2375 case IB_QPT_XRC_INI:
2376 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2377 *recv_cq = NULL;
2378 break;
2379
2380 case IB_QPT_SMI:
2381 case MLX5_IB_QPT_HW_GSI:
2382 case IB_QPT_RC:
2383 case IB_QPT_UC:
2384 case IB_QPT_UD:
2385 case IB_QPT_RAW_PACKET:
2386 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2387 *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
2388 break;
2389 default:
2390 *send_cq = NULL;
2391 *recv_cq = NULL;
2392 break;
2393 }
2394 }
2395
2396 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2397 const struct mlx5_modify_raw_qp_param *raw_qp_param,
2398 u8 lag_tx_affinity);
2399
destroy_qp_common(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct ib_udata * udata)2400 static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2401 struct ib_udata *udata)
2402 {
2403 struct mlx5_ib_cq *send_cq, *recv_cq;
2404 struct mlx5_ib_qp_base *base;
2405 unsigned long flags;
2406 int err;
2407
2408 if (qp->is_rss) {
2409 destroy_rss_raw_qp_tir(dev, qp);
2410 return;
2411 }
2412
2413 base = (qp->type == IB_QPT_RAW_PACKET ||
2414 qp->flags & IB_QP_CREATE_SOURCE_QPN) ?
2415 &qp->raw_packet_qp.rq.base :
2416 &qp->trans_qp.base;
2417
2418 if (qp->state != IB_QPS_RESET) {
2419 if (qp->type != IB_QPT_RAW_PACKET &&
2420 !(qp->flags & IB_QP_CREATE_SOURCE_QPN)) {
2421 err = mlx5_core_qp_modify(dev, MLX5_CMD_OP_2RST_QP, 0,
2422 NULL, &base->mqp, NULL);
2423 } else {
2424 struct mlx5_modify_raw_qp_param raw_qp_param = {
2425 .operation = MLX5_CMD_OP_2RST_QP
2426 };
2427
2428 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, 0);
2429 }
2430 if (err)
2431 mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
2432 base->mqp.qpn);
2433 }
2434
2435 get_cqs(qp->type, qp->ibqp.send_cq, qp->ibqp.recv_cq, &send_cq,
2436 &recv_cq);
2437
2438 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2439 mlx5_ib_lock_cqs(send_cq, recv_cq);
2440 /* del from lists under both locks above to protect reset flow paths */
2441 list_del(&qp->qps_list);
2442 if (send_cq)
2443 list_del(&qp->cq_send_list);
2444
2445 if (recv_cq)
2446 list_del(&qp->cq_recv_list);
2447
2448 if (!udata) {
2449 __mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
2450 qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
2451 if (send_cq != recv_cq)
2452 __mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
2453 NULL);
2454 }
2455 mlx5_ib_unlock_cqs(send_cq, recv_cq);
2456 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2457
2458 if (qp->type == IB_QPT_RAW_PACKET ||
2459 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
2460 destroy_raw_packet_qp(dev, qp);
2461 } else {
2462 err = mlx5_core_destroy_qp(dev, &base->mqp);
2463 if (err)
2464 mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n",
2465 base->mqp.qpn);
2466 }
2467
2468 destroy_qp(dev, qp, base, udata);
2469 }
2470
create_dct(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct mlx5_ib_qp * qp,struct mlx5_create_qp_params * params)2471 static int create_dct(struct mlx5_ib_dev *dev, struct ib_pd *pd,
2472 struct mlx5_ib_qp *qp,
2473 struct mlx5_create_qp_params *params)
2474 {
2475 struct ib_qp_init_attr *attr = params->attr;
2476 struct mlx5_ib_create_qp *ucmd = params->ucmd;
2477 u32 uidx = params->uidx;
2478 void *dctc;
2479
2480 if (mlx5_lag_is_active(dev->mdev) && !MLX5_CAP_GEN(dev->mdev, lag_dct))
2481 return -EOPNOTSUPP;
2482
2483 qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL);
2484 if (!qp->dct.in)
2485 return -ENOMEM;
2486
2487 MLX5_SET(create_dct_in, qp->dct.in, uid, to_mpd(pd)->uid);
2488 dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
2489 MLX5_SET(dctc, dctc, pd, to_mpd(pd)->pdn);
2490 MLX5_SET(dctc, dctc, srqn_xrqn, to_msrq(attr->srq)->msrq.srqn);
2491 MLX5_SET(dctc, dctc, cqn, to_mcq(attr->recv_cq)->mcq.cqn);
2492 MLX5_SET64(dctc, dctc, dc_access_key, ucmd->access_key);
2493 MLX5_SET(dctc, dctc, user_index, uidx);
2494 if (MLX5_CAP_GEN(dev->mdev, ece_support))
2495 MLX5_SET(dctc, dctc, ece, ucmd->ece_options);
2496
2497 if (qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) {
2498 int rcqe_sz = mlx5_ib_get_cqe_size(attr->recv_cq);
2499
2500 if (rcqe_sz == 128)
2501 MLX5_SET(dctc, dctc, cs_res, MLX5_RES_SCAT_DATA64_CQE);
2502 }
2503
2504 qp->state = IB_QPS_RESET;
2505 rdma_restrack_no_track(&qp->ibqp.res);
2506 return 0;
2507 }
2508
check_qp_type(struct mlx5_ib_dev * dev,struct ib_qp_init_attr * attr,enum ib_qp_type * type)2509 static int check_qp_type(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
2510 enum ib_qp_type *type)
2511 {
2512 if (attr->qp_type == IB_QPT_DRIVER && !MLX5_CAP_GEN(dev->mdev, dct))
2513 goto out;
2514
2515 switch (attr->qp_type) {
2516 case IB_QPT_XRC_TGT:
2517 case IB_QPT_XRC_INI:
2518 if (!MLX5_CAP_GEN(dev->mdev, xrc))
2519 goto out;
2520 fallthrough;
2521 case IB_QPT_RC:
2522 case IB_QPT_UC:
2523 case IB_QPT_SMI:
2524 case MLX5_IB_QPT_HW_GSI:
2525 case IB_QPT_DRIVER:
2526 case IB_QPT_GSI:
2527 case IB_QPT_RAW_PACKET:
2528 case IB_QPT_UD:
2529 case MLX5_IB_QPT_REG_UMR:
2530 break;
2531 default:
2532 goto out;
2533 }
2534
2535 *type = attr->qp_type;
2536 return 0;
2537
2538 out:
2539 mlx5_ib_dbg(dev, "Unsupported QP type %d\n", attr->qp_type);
2540 return -EOPNOTSUPP;
2541 }
2542
check_valid_flow(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct ib_qp_init_attr * attr,struct ib_udata * udata)2543 static int check_valid_flow(struct mlx5_ib_dev *dev, struct ib_pd *pd,
2544 struct ib_qp_init_attr *attr,
2545 struct ib_udata *udata)
2546 {
2547 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2548 udata, struct mlx5_ib_ucontext, ibucontext);
2549
2550 if (!udata) {
2551 /* Kernel create_qp callers */
2552 if (attr->rwq_ind_tbl)
2553 return -EOPNOTSUPP;
2554
2555 switch (attr->qp_type) {
2556 case IB_QPT_RAW_PACKET:
2557 case IB_QPT_DRIVER:
2558 return -EOPNOTSUPP;
2559 default:
2560 return 0;
2561 }
2562 }
2563
2564 /* Userspace create_qp callers */
2565 if (attr->qp_type == IB_QPT_RAW_PACKET && !ucontext->cqe_version) {
2566 mlx5_ib_dbg(dev,
2567 "Raw Packet QP is only supported for CQE version > 0\n");
2568 return -EINVAL;
2569 }
2570
2571 if (attr->qp_type != IB_QPT_RAW_PACKET && attr->rwq_ind_tbl) {
2572 mlx5_ib_dbg(dev,
2573 "Wrong QP type %d for the RWQ indirect table\n",
2574 attr->qp_type);
2575 return -EINVAL;
2576 }
2577
2578 /*
2579 * We don't need to see this warning, it means that kernel code
2580 * missing ib_pd. Placed here to catch developer's mistakes.
2581 */
2582 WARN_ONCE(!pd && attr->qp_type != IB_QPT_XRC_TGT,
2583 "There is a missing PD pointer assignment\n");
2584 return 0;
2585 }
2586
process_vendor_flag(struct mlx5_ib_dev * dev,int * flags,int flag,bool cond,struct mlx5_ib_qp * qp)2587 static void process_vendor_flag(struct mlx5_ib_dev *dev, int *flags, int flag,
2588 bool cond, struct mlx5_ib_qp *qp)
2589 {
2590 if (!(*flags & flag))
2591 return;
2592
2593 if (cond) {
2594 qp->flags_en |= flag;
2595 *flags &= ~flag;
2596 return;
2597 }
2598
2599 switch (flag) {
2600 case MLX5_QP_FLAG_SCATTER_CQE:
2601 case MLX5_QP_FLAG_ALLOW_SCATTER_CQE:
2602 /*
2603 * We don't return error if these flags were provided,
2604 * and mlx5 doesn't have right capability.
2605 */
2606 *flags &= ~(MLX5_QP_FLAG_SCATTER_CQE |
2607 MLX5_QP_FLAG_ALLOW_SCATTER_CQE);
2608 return;
2609 default:
2610 break;
2611 }
2612 mlx5_ib_dbg(dev, "Vendor create QP flag 0x%X is not supported\n", flag);
2613 }
2614
process_vendor_flags(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,void * ucmd,struct ib_qp_init_attr * attr)2615 static int process_vendor_flags(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2616 void *ucmd, struct ib_qp_init_attr *attr)
2617 {
2618 struct mlx5_core_dev *mdev = dev->mdev;
2619 bool cond;
2620 int flags;
2621
2622 if (attr->rwq_ind_tbl)
2623 flags = ((struct mlx5_ib_create_qp_rss *)ucmd)->flags;
2624 else
2625 flags = ((struct mlx5_ib_create_qp *)ucmd)->flags;
2626
2627 switch (flags & (MLX5_QP_FLAG_TYPE_DCT | MLX5_QP_FLAG_TYPE_DCI)) {
2628 case MLX5_QP_FLAG_TYPE_DCI:
2629 qp->type = MLX5_IB_QPT_DCI;
2630 break;
2631 case MLX5_QP_FLAG_TYPE_DCT:
2632 qp->type = MLX5_IB_QPT_DCT;
2633 break;
2634 default:
2635 if (qp->type != IB_QPT_DRIVER)
2636 break;
2637 /*
2638 * It is IB_QPT_DRIVER and or no subtype or
2639 * wrong subtype were provided.
2640 */
2641 return -EINVAL;
2642 }
2643
2644 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TYPE_DCI, true, qp);
2645 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TYPE_DCT, true, qp);
2646
2647 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_SIGNATURE, true, qp);
2648 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_SCATTER_CQE,
2649 MLX5_CAP_GEN(mdev, sctr_data_cqe), qp);
2650 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_ALLOW_SCATTER_CQE,
2651 MLX5_CAP_GEN(mdev, sctr_data_cqe), qp);
2652
2653 if (qp->type == IB_QPT_RAW_PACKET) {
2654 cond = MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan) ||
2655 MLX5_CAP_ETH(mdev, tunnel_stateless_gre) ||
2656 MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx);
2657 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TUNNEL_OFFLOADS,
2658 cond, qp);
2659 process_vendor_flag(dev, &flags,
2660 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC, true,
2661 qp);
2662 process_vendor_flag(dev, &flags,
2663 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC, true,
2664 qp);
2665 }
2666
2667 if (qp->type == IB_QPT_RC)
2668 process_vendor_flag(dev, &flags,
2669 MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE,
2670 MLX5_CAP_GEN(mdev, qp_packet_based), qp);
2671
2672 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_BFREG_INDEX, true, qp);
2673 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_UAR_PAGE_INDEX, true, qp);
2674
2675 cond = qp->flags_en & ~(MLX5_QP_FLAG_TUNNEL_OFFLOADS |
2676 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
2677 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC);
2678 if (attr->rwq_ind_tbl && cond) {
2679 mlx5_ib_dbg(dev, "RSS RAW QP has unsupported flags 0x%X\n",
2680 cond);
2681 return -EINVAL;
2682 }
2683
2684 if (flags)
2685 mlx5_ib_dbg(dev, "udata has unsupported flags 0x%X\n", flags);
2686
2687 return (flags) ? -EINVAL : 0;
2688 }
2689
process_create_flag(struct mlx5_ib_dev * dev,int * flags,int flag,bool cond,struct mlx5_ib_qp * qp)2690 static void process_create_flag(struct mlx5_ib_dev *dev, int *flags, int flag,
2691 bool cond, struct mlx5_ib_qp *qp)
2692 {
2693 if (!(*flags & flag))
2694 return;
2695
2696 if (cond) {
2697 qp->flags |= flag;
2698 *flags &= ~flag;
2699 return;
2700 }
2701
2702 if (flag == MLX5_IB_QP_CREATE_WC_TEST) {
2703 /*
2704 * Special case, if condition didn't meet, it won't be error,
2705 * just different in-kernel flow.
2706 */
2707 *flags &= ~MLX5_IB_QP_CREATE_WC_TEST;
2708 return;
2709 }
2710 mlx5_ib_dbg(dev, "Verbs create QP flag 0x%X is not supported\n", flag);
2711 }
2712
process_create_flags(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct ib_qp_init_attr * attr)2713 static int process_create_flags(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2714 struct ib_qp_init_attr *attr)
2715 {
2716 enum ib_qp_type qp_type = qp->type;
2717 struct mlx5_core_dev *mdev = dev->mdev;
2718 int create_flags = attr->create_flags;
2719 bool cond;
2720
2721 if (qp_type == MLX5_IB_QPT_DCT)
2722 return (create_flags) ? -EINVAL : 0;
2723
2724 if (qp_type == IB_QPT_RAW_PACKET && attr->rwq_ind_tbl)
2725 return (create_flags) ? -EINVAL : 0;
2726
2727 process_create_flag(dev, &create_flags, IB_QP_CREATE_NETIF_QP,
2728 mlx5_get_flow_namespace(dev->mdev,
2729 MLX5_FLOW_NAMESPACE_BYPASS),
2730 qp);
2731 process_create_flag(dev, &create_flags,
2732 IB_QP_CREATE_INTEGRITY_EN,
2733 MLX5_CAP_GEN(mdev, sho), qp);
2734 process_create_flag(dev, &create_flags,
2735 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK,
2736 MLX5_CAP_GEN(mdev, block_lb_mc), qp);
2737 process_create_flag(dev, &create_flags, IB_QP_CREATE_CROSS_CHANNEL,
2738 MLX5_CAP_GEN(mdev, cd), qp);
2739 process_create_flag(dev, &create_flags, IB_QP_CREATE_MANAGED_SEND,
2740 MLX5_CAP_GEN(mdev, cd), qp);
2741 process_create_flag(dev, &create_flags, IB_QP_CREATE_MANAGED_RECV,
2742 MLX5_CAP_GEN(mdev, cd), qp);
2743
2744 if (qp_type == IB_QPT_UD) {
2745 process_create_flag(dev, &create_flags,
2746 IB_QP_CREATE_IPOIB_UD_LSO,
2747 MLX5_CAP_GEN(mdev, ipoib_basic_offloads),
2748 qp);
2749 cond = MLX5_CAP_GEN(mdev, port_type) == MLX5_CAP_PORT_TYPE_IB;
2750 process_create_flag(dev, &create_flags, IB_QP_CREATE_SOURCE_QPN,
2751 cond, qp);
2752 }
2753
2754 if (qp_type == IB_QPT_RAW_PACKET) {
2755 cond = MLX5_CAP_GEN(mdev, eth_net_offloads) &&
2756 MLX5_CAP_ETH(mdev, scatter_fcs);
2757 process_create_flag(dev, &create_flags,
2758 IB_QP_CREATE_SCATTER_FCS, cond, qp);
2759
2760 cond = MLX5_CAP_GEN(mdev, eth_net_offloads) &&
2761 MLX5_CAP_ETH(mdev, vlan_cap);
2762 process_create_flag(dev, &create_flags,
2763 IB_QP_CREATE_CVLAN_STRIPPING, cond, qp);
2764 }
2765
2766 process_create_flag(dev, &create_flags,
2767 IB_QP_CREATE_PCI_WRITE_END_PADDING,
2768 MLX5_CAP_GEN(mdev, end_pad), qp);
2769
2770 process_create_flag(dev, &create_flags, MLX5_IB_QP_CREATE_WC_TEST,
2771 qp_type != MLX5_IB_QPT_REG_UMR, qp);
2772 process_create_flag(dev, &create_flags, MLX5_IB_QP_CREATE_SQPN_QP1,
2773 true, qp);
2774
2775 if (create_flags) {
2776 mlx5_ib_dbg(dev, "Create QP has unsupported flags 0x%X\n",
2777 create_flags);
2778 return -EOPNOTSUPP;
2779 }
2780 return 0;
2781 }
2782
process_udata_size(struct mlx5_ib_dev * dev,struct mlx5_create_qp_params * params)2783 static int process_udata_size(struct mlx5_ib_dev *dev,
2784 struct mlx5_create_qp_params *params)
2785 {
2786 size_t ucmd = sizeof(struct mlx5_ib_create_qp);
2787 struct ib_udata *udata = params->udata;
2788 size_t outlen = udata->outlen;
2789 size_t inlen = udata->inlen;
2790
2791 params->outlen = min(outlen, sizeof(struct mlx5_ib_create_qp_resp));
2792 params->ucmd_size = ucmd;
2793 if (!params->is_rss_raw) {
2794 /* User has old rdma-core, which doesn't support ECE */
2795 size_t min_inlen =
2796 offsetof(struct mlx5_ib_create_qp, ece_options);
2797
2798 /*
2799 * We will check in check_ucmd_data() that user
2800 * cleared everything after inlen.
2801 */
2802 params->inlen = (inlen < min_inlen) ? 0 : min(inlen, ucmd);
2803 goto out;
2804 }
2805
2806 /* RSS RAW QP */
2807 if (inlen < offsetofend(struct mlx5_ib_create_qp_rss, flags))
2808 return -EINVAL;
2809
2810 if (outlen < offsetofend(struct mlx5_ib_create_qp_resp, bfreg_index))
2811 return -EINVAL;
2812
2813 ucmd = sizeof(struct mlx5_ib_create_qp_rss);
2814 params->ucmd_size = ucmd;
2815 if (inlen > ucmd && !ib_is_udata_cleared(udata, ucmd, inlen - ucmd))
2816 return -EINVAL;
2817
2818 params->inlen = min(ucmd, inlen);
2819 out:
2820 if (!params->inlen)
2821 mlx5_ib_dbg(dev, "udata is too small\n");
2822
2823 return (params->inlen) ? 0 : -EINVAL;
2824 }
2825
create_qp(struct mlx5_ib_dev * dev,struct ib_pd * pd,struct mlx5_ib_qp * qp,struct mlx5_create_qp_params * params)2826 static int create_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
2827 struct mlx5_ib_qp *qp,
2828 struct mlx5_create_qp_params *params)
2829 {
2830 int err;
2831
2832 if (params->is_rss_raw) {
2833 err = create_rss_raw_qp_tir(dev, pd, qp, params);
2834 goto out;
2835 }
2836
2837 switch (qp->type) {
2838 case MLX5_IB_QPT_DCT:
2839 err = create_dct(dev, pd, qp, params);
2840 break;
2841 case IB_QPT_XRC_TGT:
2842 err = create_xrc_tgt_qp(dev, qp, params);
2843 break;
2844 case IB_QPT_GSI:
2845 err = mlx5_ib_create_gsi(pd, qp, params->attr);
2846 break;
2847 default:
2848 if (params->udata)
2849 err = create_user_qp(dev, pd, qp, params);
2850 else
2851 err = create_kernel_qp(dev, pd, qp, params);
2852 }
2853
2854 out:
2855 if (err) {
2856 mlx5_ib_err(dev, "Create QP type %d failed\n", qp->type);
2857 return err;
2858 }
2859
2860 if (is_qp0(qp->type))
2861 qp->ibqp.qp_num = 0;
2862 else if (is_qp1(qp->type))
2863 qp->ibqp.qp_num = 1;
2864 else
2865 qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn;
2866
2867 mlx5_ib_dbg(dev,
2868 "QP type %d, ib qpn 0x%X, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x, ece 0x%x\n",
2869 qp->type, qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
2870 params->attr->recv_cq ? to_mcq(params->attr->recv_cq)->mcq.cqn :
2871 -1,
2872 params->attr->send_cq ? to_mcq(params->attr->send_cq)->mcq.cqn :
2873 -1,
2874 params->resp.ece_options);
2875
2876 return 0;
2877 }
2878
check_qp_attr(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct ib_qp_init_attr * attr)2879 static int check_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2880 struct ib_qp_init_attr *attr)
2881 {
2882 int ret = 0;
2883
2884 switch (qp->type) {
2885 case MLX5_IB_QPT_DCT:
2886 ret = (!attr->srq || !attr->recv_cq) ? -EINVAL : 0;
2887 break;
2888 case MLX5_IB_QPT_DCI:
2889 ret = (attr->cap.max_recv_wr || attr->cap.max_recv_sge) ?
2890 -EINVAL :
2891 0;
2892 break;
2893 case IB_QPT_RAW_PACKET:
2894 ret = (attr->rwq_ind_tbl && attr->send_cq) ? -EINVAL : 0;
2895 break;
2896 default:
2897 break;
2898 }
2899
2900 if (ret)
2901 mlx5_ib_dbg(dev, "QP type %d has wrong attributes\n", qp->type);
2902
2903 return ret;
2904 }
2905
get_qp_uidx(struct mlx5_ib_qp * qp,struct mlx5_create_qp_params * params)2906 static int get_qp_uidx(struct mlx5_ib_qp *qp,
2907 struct mlx5_create_qp_params *params)
2908 {
2909 struct mlx5_ib_create_qp *ucmd = params->ucmd;
2910 struct ib_udata *udata = params->udata;
2911 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2912 udata, struct mlx5_ib_ucontext, ibucontext);
2913
2914 if (params->is_rss_raw)
2915 return 0;
2916
2917 return get_qp_user_index(ucontext, ucmd, sizeof(*ucmd), ¶ms->uidx);
2918 }
2919
mlx5_ib_destroy_dct(struct mlx5_ib_qp * mqp)2920 static int mlx5_ib_destroy_dct(struct mlx5_ib_qp *mqp)
2921 {
2922 struct mlx5_ib_dev *dev = to_mdev(mqp->ibqp.device);
2923
2924 if (mqp->state == IB_QPS_RTR) {
2925 int err;
2926
2927 err = mlx5_core_destroy_dct(dev, &mqp->dct.mdct);
2928 if (err) {
2929 mlx5_ib_warn(dev, "failed to destroy DCT %d\n", err);
2930 return err;
2931 }
2932 }
2933
2934 kfree(mqp->dct.in);
2935 kfree(mqp);
2936 return 0;
2937 }
2938
check_ucmd_data(struct mlx5_ib_dev * dev,struct mlx5_create_qp_params * params)2939 static int check_ucmd_data(struct mlx5_ib_dev *dev,
2940 struct mlx5_create_qp_params *params)
2941 {
2942 struct ib_udata *udata = params->udata;
2943 size_t size, last;
2944 int ret;
2945
2946 if (params->is_rss_raw)
2947 /*
2948 * These QPs don't have "reserved" field in their
2949 * create_qp input struct, so their data is always valid.
2950 */
2951 last = sizeof(struct mlx5_ib_create_qp_rss);
2952 else
2953 last = offsetof(struct mlx5_ib_create_qp, reserved);
2954
2955 if (udata->inlen <= last)
2956 return 0;
2957
2958 /*
2959 * User provides different create_qp structures based on the
2960 * flow and we need to know if he cleared memory after our
2961 * struct create_qp ends.
2962 */
2963 size = udata->inlen - last;
2964 ret = ib_is_udata_cleared(params->udata, last, size);
2965 if (!ret)
2966 mlx5_ib_dbg(
2967 dev,
2968 "udata is not cleared, inlen = %zu, ucmd = %zu, last = %zu, size = %zu\n",
2969 udata->inlen, params->ucmd_size, last, size);
2970 return ret ? 0 : -EINVAL;
2971 }
2972
mlx5_ib_create_qp(struct ib_pd * pd,struct ib_qp_init_attr * attr,struct ib_udata * udata)2973 struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attr,
2974 struct ib_udata *udata)
2975 {
2976 struct mlx5_create_qp_params params = {};
2977 struct mlx5_ib_dev *dev;
2978 struct mlx5_ib_qp *qp;
2979 enum ib_qp_type type;
2980 int err;
2981
2982 dev = pd ? to_mdev(pd->device) :
2983 to_mdev(to_mxrcd(attr->xrcd)->ibxrcd.device);
2984
2985 err = check_qp_type(dev, attr, &type);
2986 if (err)
2987 return ERR_PTR(err);
2988
2989 err = check_valid_flow(dev, pd, attr, udata);
2990 if (err)
2991 return ERR_PTR(err);
2992
2993 params.udata = udata;
2994 params.uidx = MLX5_IB_DEFAULT_UIDX;
2995 params.attr = attr;
2996 params.is_rss_raw = !!attr->rwq_ind_tbl;
2997
2998 if (udata) {
2999 err = process_udata_size(dev, ¶ms);
3000 if (err)
3001 return ERR_PTR(err);
3002
3003 err = check_ucmd_data(dev, ¶ms);
3004 if (err)
3005 return ERR_PTR(err);
3006
3007 params.ucmd = kzalloc(params.ucmd_size, GFP_KERNEL);
3008 if (!params.ucmd)
3009 return ERR_PTR(-ENOMEM);
3010
3011 err = ib_copy_from_udata(params.ucmd, udata, params.inlen);
3012 if (err)
3013 goto free_ucmd;
3014 }
3015
3016 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
3017 if (!qp) {
3018 err = -ENOMEM;
3019 goto free_ucmd;
3020 }
3021
3022 mutex_init(&qp->mutex);
3023 qp->type = type;
3024 if (udata) {
3025 err = process_vendor_flags(dev, qp, params.ucmd, attr);
3026 if (err)
3027 goto free_qp;
3028
3029 err = get_qp_uidx(qp, ¶ms);
3030 if (err)
3031 goto free_qp;
3032 }
3033 err = process_create_flags(dev, qp, attr);
3034 if (err)
3035 goto free_qp;
3036
3037 err = check_qp_attr(dev, qp, attr);
3038 if (err)
3039 goto free_qp;
3040
3041 err = create_qp(dev, pd, qp, ¶ms);
3042 if (err)
3043 goto free_qp;
3044
3045 kfree(params.ucmd);
3046 params.ucmd = NULL;
3047
3048 if (udata)
3049 /*
3050 * It is safe to copy response for all user create QP flows,
3051 * including MLX5_IB_QPT_DCT, which doesn't need it.
3052 * In that case, resp will be filled with zeros.
3053 */
3054 err = ib_copy_to_udata(udata, ¶ms.resp, params.outlen);
3055 if (err)
3056 goto destroy_qp;
3057
3058 return &qp->ibqp;
3059
3060 destroy_qp:
3061 switch (qp->type) {
3062 case MLX5_IB_QPT_DCT:
3063 mlx5_ib_destroy_dct(qp);
3064 break;
3065 case IB_QPT_GSI:
3066 mlx5_ib_destroy_gsi(qp);
3067 break;
3068 default:
3069 /*
3070 * These lines below are temp solution till QP allocation
3071 * will be moved to be under IB/core responsiblity.
3072 */
3073 qp->ibqp.send_cq = attr->send_cq;
3074 qp->ibqp.recv_cq = attr->recv_cq;
3075 qp->ibqp.pd = pd;
3076 destroy_qp_common(dev, qp, udata);
3077 }
3078
3079 qp = NULL;
3080 free_qp:
3081 kfree(qp);
3082 free_ucmd:
3083 kfree(params.ucmd);
3084 return ERR_PTR(err);
3085 }
3086
mlx5_ib_destroy_qp(struct ib_qp * qp,struct ib_udata * udata)3087 int mlx5_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata)
3088 {
3089 struct mlx5_ib_dev *dev = to_mdev(qp->device);
3090 struct mlx5_ib_qp *mqp = to_mqp(qp);
3091
3092 if (unlikely(qp->qp_type == IB_QPT_GSI))
3093 return mlx5_ib_destroy_gsi(mqp);
3094
3095 if (mqp->type == MLX5_IB_QPT_DCT)
3096 return mlx5_ib_destroy_dct(mqp);
3097
3098 destroy_qp_common(dev, mqp, udata);
3099
3100 kfree(mqp);
3101
3102 return 0;
3103 }
3104
set_qpc_atomic_flags(struct mlx5_ib_qp * qp,const struct ib_qp_attr * attr,int attr_mask,void * qpc)3105 static int set_qpc_atomic_flags(struct mlx5_ib_qp *qp,
3106 const struct ib_qp_attr *attr, int attr_mask,
3107 void *qpc)
3108 {
3109 struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device);
3110 u8 dest_rd_atomic;
3111 u32 access_flags;
3112
3113 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
3114 dest_rd_atomic = attr->max_dest_rd_atomic;
3115 else
3116 dest_rd_atomic = qp->trans_qp.resp_depth;
3117
3118 if (attr_mask & IB_QP_ACCESS_FLAGS)
3119 access_flags = attr->qp_access_flags;
3120 else
3121 access_flags = qp->trans_qp.atomic_rd_en;
3122
3123 if (!dest_rd_atomic)
3124 access_flags &= IB_ACCESS_REMOTE_WRITE;
3125
3126 MLX5_SET(qpc, qpc, rre, !!(access_flags & IB_ACCESS_REMOTE_READ));
3127
3128 if (access_flags & IB_ACCESS_REMOTE_ATOMIC) {
3129 int atomic_mode;
3130
3131 atomic_mode = get_atomic_mode(dev, qp->ibqp.qp_type);
3132 if (atomic_mode < 0)
3133 return -EOPNOTSUPP;
3134
3135 MLX5_SET(qpc, qpc, rae, 1);
3136 MLX5_SET(qpc, qpc, atomic_mode, atomic_mode);
3137 }
3138
3139 MLX5_SET(qpc, qpc, rwe, !!(access_flags & IB_ACCESS_REMOTE_WRITE));
3140 return 0;
3141 }
3142
3143 enum {
3144 MLX5_PATH_FLAG_FL = 1 << 0,
3145 MLX5_PATH_FLAG_FREE_AR = 1 << 1,
3146 MLX5_PATH_FLAG_COUNTER = 1 << 2,
3147 };
3148
mlx5_to_ib_rate_map(u8 rate)3149 static int mlx5_to_ib_rate_map(u8 rate)
3150 {
3151 static const int rates[] = { IB_RATE_PORT_CURRENT, IB_RATE_56_GBPS,
3152 IB_RATE_25_GBPS, IB_RATE_100_GBPS,
3153 IB_RATE_200_GBPS, IB_RATE_50_GBPS,
3154 IB_RATE_400_GBPS };
3155
3156 if (rate < ARRAY_SIZE(rates))
3157 return rates[rate];
3158
3159 return rate - MLX5_STAT_RATE_OFFSET;
3160 }
3161
ib_to_mlx5_rate_map(u8 rate)3162 static int ib_to_mlx5_rate_map(u8 rate)
3163 {
3164 switch (rate) {
3165 case IB_RATE_PORT_CURRENT:
3166 return 0;
3167 case IB_RATE_56_GBPS:
3168 return 1;
3169 case IB_RATE_25_GBPS:
3170 return 2;
3171 case IB_RATE_100_GBPS:
3172 return 3;
3173 case IB_RATE_200_GBPS:
3174 return 4;
3175 case IB_RATE_50_GBPS:
3176 return 5;
3177 case IB_RATE_400_GBPS:
3178 return 6;
3179 default:
3180 return rate + MLX5_STAT_RATE_OFFSET;
3181 }
3182
3183 return 0;
3184 }
3185
ib_rate_to_mlx5(struct mlx5_ib_dev * dev,u8 rate)3186 static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
3187 {
3188 u32 stat_rate_support;
3189
3190 if (rate == IB_RATE_PORT_CURRENT)
3191 return 0;
3192
3193 if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_600_GBPS)
3194 return -EINVAL;
3195
3196 stat_rate_support = MLX5_CAP_GEN(dev->mdev, stat_rate_support);
3197 while (rate != IB_RATE_PORT_CURRENT &&
3198 !(1 << ib_to_mlx5_rate_map(rate) & stat_rate_support))
3199 --rate;
3200
3201 return ib_to_mlx5_rate_map(rate);
3202 }
3203
modify_raw_packet_eth_prio(struct mlx5_core_dev * dev,struct mlx5_ib_sq * sq,u8 sl,struct ib_pd * pd)3204 static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
3205 struct mlx5_ib_sq *sq, u8 sl,
3206 struct ib_pd *pd)
3207 {
3208 void *in;
3209 void *tisc;
3210 int inlen;
3211 int err;
3212
3213 inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
3214 in = kvzalloc(inlen, GFP_KERNEL);
3215 if (!in)
3216 return -ENOMEM;
3217
3218 MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
3219 MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
3220
3221 tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
3222 MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
3223
3224 err = mlx5_core_modify_tis(dev, sq->tisn, in);
3225
3226 kvfree(in);
3227
3228 return err;
3229 }
3230
modify_raw_packet_tx_affinity(struct mlx5_core_dev * dev,struct mlx5_ib_sq * sq,u8 tx_affinity,struct ib_pd * pd)3231 static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev,
3232 struct mlx5_ib_sq *sq, u8 tx_affinity,
3233 struct ib_pd *pd)
3234 {
3235 void *in;
3236 void *tisc;
3237 int inlen;
3238 int err;
3239
3240 inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
3241 in = kvzalloc(inlen, GFP_KERNEL);
3242 if (!in)
3243 return -ENOMEM;
3244
3245 MLX5_SET(modify_tis_in, in, bitmask.lag_tx_port_affinity, 1);
3246 MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
3247
3248 tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
3249 MLX5_SET(tisc, tisc, lag_tx_port_affinity, tx_affinity);
3250
3251 err = mlx5_core_modify_tis(dev, sq->tisn, in);
3252
3253 kvfree(in);
3254
3255 return err;
3256 }
3257
mlx5_set_path_udp_sport(void * path,const struct rdma_ah_attr * ah,u32 lqpn,u32 rqpn)3258 static void mlx5_set_path_udp_sport(void *path, const struct rdma_ah_attr *ah,
3259 u32 lqpn, u32 rqpn)
3260
3261 {
3262 u32 fl = ah->grh.flow_label;
3263
3264 if (!fl)
3265 fl = rdma_calc_flow_label(lqpn, rqpn);
3266
3267 MLX5_SET(ads, path, udp_sport, rdma_flow_label_to_udp_sport(fl));
3268 }
3269
mlx5_set_path(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,const struct rdma_ah_attr * ah,void * path,u8 port,int attr_mask,u32 path_flags,const struct ib_qp_attr * attr,bool alt)3270 static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
3271 const struct rdma_ah_attr *ah, void *path, u8 port,
3272 int attr_mask, u32 path_flags,
3273 const struct ib_qp_attr *attr, bool alt)
3274 {
3275 const struct ib_global_route *grh = rdma_ah_read_grh(ah);
3276 int err;
3277 enum ib_gid_type gid_type;
3278 u8 ah_flags = rdma_ah_get_ah_flags(ah);
3279 u8 sl = rdma_ah_get_sl(ah);
3280
3281 if (attr_mask & IB_QP_PKEY_INDEX)
3282 MLX5_SET(ads, path, pkey_index,
3283 alt ? attr->alt_pkey_index : attr->pkey_index);
3284
3285 if (ah_flags & IB_AH_GRH) {
3286 const struct ib_port_immutable *immutable;
3287
3288 immutable = ib_port_immutable_read(&dev->ib_dev, port);
3289 if (grh->sgid_index >= immutable->gid_tbl_len) {
3290 pr_err("sgid_index (%u) too large. max is %d\n",
3291 grh->sgid_index,
3292 immutable->gid_tbl_len);
3293 return -EINVAL;
3294 }
3295 }
3296
3297 if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) {
3298 if (!(ah_flags & IB_AH_GRH))
3299 return -EINVAL;
3300
3301 ether_addr_copy(MLX5_ADDR_OF(ads, path, rmac_47_32),
3302 ah->roce.dmac);
3303 if ((qp->ibqp.qp_type == IB_QPT_RC ||
3304 qp->ibqp.qp_type == IB_QPT_UC ||
3305 qp->ibqp.qp_type == IB_QPT_XRC_INI ||
3306 qp->ibqp.qp_type == IB_QPT_XRC_TGT) &&
3307 (grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) &&
3308 (attr_mask & IB_QP_DEST_QPN))
3309 mlx5_set_path_udp_sport(path, ah,
3310 qp->ibqp.qp_num,
3311 attr->dest_qp_num);
3312 MLX5_SET(ads, path, eth_prio, sl & 0x7);
3313 gid_type = ah->grh.sgid_attr->gid_type;
3314 if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
3315 MLX5_SET(ads, path, dscp, grh->traffic_class >> 2);
3316 } else {
3317 MLX5_SET(ads, path, fl, !!(path_flags & MLX5_PATH_FLAG_FL));
3318 MLX5_SET(ads, path, free_ar,
3319 !!(path_flags & MLX5_PATH_FLAG_FREE_AR));
3320 MLX5_SET(ads, path, rlid, rdma_ah_get_dlid(ah));
3321 MLX5_SET(ads, path, mlid, rdma_ah_get_path_bits(ah));
3322 MLX5_SET(ads, path, grh, !!(ah_flags & IB_AH_GRH));
3323 MLX5_SET(ads, path, sl, sl);
3324 }
3325
3326 if (ah_flags & IB_AH_GRH) {
3327 MLX5_SET(ads, path, src_addr_index, grh->sgid_index);
3328 MLX5_SET(ads, path, hop_limit, grh->hop_limit);
3329 MLX5_SET(ads, path, tclass, grh->traffic_class);
3330 MLX5_SET(ads, path, flow_label, grh->flow_label);
3331 memcpy(MLX5_ADDR_OF(ads, path, rgid_rip), grh->dgid.raw,
3332 sizeof(grh->dgid.raw));
3333 }
3334
3335 err = ib_rate_to_mlx5(dev, rdma_ah_get_static_rate(ah));
3336 if (err < 0)
3337 return err;
3338 MLX5_SET(ads, path, stat_rate, err);
3339 MLX5_SET(ads, path, vhca_port_num, port);
3340
3341 if (attr_mask & IB_QP_TIMEOUT)
3342 MLX5_SET(ads, path, ack_timeout,
3343 alt ? attr->alt_timeout : attr->timeout);
3344
3345 if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
3346 return modify_raw_packet_eth_prio(dev->mdev,
3347 &qp->raw_packet_qp.sq,
3348 sl & 0xf, qp->ibqp.pd);
3349
3350 return 0;
3351 }
3352
3353 static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
3354 [MLX5_QP_STATE_INIT] = {
3355 [MLX5_QP_STATE_INIT] = {
3356 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
3357 MLX5_QP_OPTPAR_RAE |
3358 MLX5_QP_OPTPAR_RWE |
3359 MLX5_QP_OPTPAR_PKEY_INDEX |
3360 MLX5_QP_OPTPAR_PRI_PORT |
3361 MLX5_QP_OPTPAR_LAG_TX_AFF,
3362 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
3363 MLX5_QP_OPTPAR_PKEY_INDEX |
3364 MLX5_QP_OPTPAR_PRI_PORT |
3365 MLX5_QP_OPTPAR_LAG_TX_AFF,
3366 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
3367 MLX5_QP_OPTPAR_Q_KEY |
3368 MLX5_QP_OPTPAR_PRI_PORT,
3369 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE |
3370 MLX5_QP_OPTPAR_RAE |
3371 MLX5_QP_OPTPAR_RWE |
3372 MLX5_QP_OPTPAR_PKEY_INDEX |
3373 MLX5_QP_OPTPAR_PRI_PORT |
3374 MLX5_QP_OPTPAR_LAG_TX_AFF,
3375 },
3376 [MLX5_QP_STATE_RTR] = {
3377 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3378 MLX5_QP_OPTPAR_RRE |
3379 MLX5_QP_OPTPAR_RAE |
3380 MLX5_QP_OPTPAR_RWE |
3381 MLX5_QP_OPTPAR_PKEY_INDEX |
3382 MLX5_QP_OPTPAR_LAG_TX_AFF,
3383 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3384 MLX5_QP_OPTPAR_RWE |
3385 MLX5_QP_OPTPAR_PKEY_INDEX |
3386 MLX5_QP_OPTPAR_LAG_TX_AFF,
3387 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
3388 MLX5_QP_OPTPAR_Q_KEY,
3389 [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX |
3390 MLX5_QP_OPTPAR_Q_KEY,
3391 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3392 MLX5_QP_OPTPAR_RRE |
3393 MLX5_QP_OPTPAR_RAE |
3394 MLX5_QP_OPTPAR_RWE |
3395 MLX5_QP_OPTPAR_PKEY_INDEX |
3396 MLX5_QP_OPTPAR_LAG_TX_AFF,
3397 },
3398 },
3399 [MLX5_QP_STATE_RTR] = {
3400 [MLX5_QP_STATE_RTS] = {
3401 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3402 MLX5_QP_OPTPAR_RRE |
3403 MLX5_QP_OPTPAR_RAE |
3404 MLX5_QP_OPTPAR_RWE |
3405 MLX5_QP_OPTPAR_PM_STATE |
3406 MLX5_QP_OPTPAR_RNR_TIMEOUT,
3407 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3408 MLX5_QP_OPTPAR_RWE |
3409 MLX5_QP_OPTPAR_PM_STATE,
3410 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
3411 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3412 MLX5_QP_OPTPAR_RRE |
3413 MLX5_QP_OPTPAR_RAE |
3414 MLX5_QP_OPTPAR_RWE |
3415 MLX5_QP_OPTPAR_PM_STATE |
3416 MLX5_QP_OPTPAR_RNR_TIMEOUT,
3417 },
3418 },
3419 [MLX5_QP_STATE_RTS] = {
3420 [MLX5_QP_STATE_RTS] = {
3421 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
3422 MLX5_QP_OPTPAR_RAE |
3423 MLX5_QP_OPTPAR_RWE |
3424 MLX5_QP_OPTPAR_RNR_TIMEOUT |
3425 MLX5_QP_OPTPAR_PM_STATE |
3426 MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3427 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
3428 MLX5_QP_OPTPAR_PM_STATE |
3429 MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3430 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY |
3431 MLX5_QP_OPTPAR_SRQN |
3432 MLX5_QP_OPTPAR_CQN_RCV,
3433 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE |
3434 MLX5_QP_OPTPAR_RAE |
3435 MLX5_QP_OPTPAR_RWE |
3436 MLX5_QP_OPTPAR_RNR_TIMEOUT |
3437 MLX5_QP_OPTPAR_PM_STATE |
3438 MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3439 },
3440 },
3441 [MLX5_QP_STATE_SQER] = {
3442 [MLX5_QP_STATE_RTS] = {
3443 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
3444 [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
3445 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE,
3446 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RNR_TIMEOUT |
3447 MLX5_QP_OPTPAR_RWE |
3448 MLX5_QP_OPTPAR_RAE |
3449 MLX5_QP_OPTPAR_RRE,
3450 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RNR_TIMEOUT |
3451 MLX5_QP_OPTPAR_RWE |
3452 MLX5_QP_OPTPAR_RAE |
3453 MLX5_QP_OPTPAR_RRE,
3454 },
3455 },
3456 };
3457
ib_nr_to_mlx5_nr(int ib_mask)3458 static int ib_nr_to_mlx5_nr(int ib_mask)
3459 {
3460 switch (ib_mask) {
3461 case IB_QP_STATE:
3462 return 0;
3463 case IB_QP_CUR_STATE:
3464 return 0;
3465 case IB_QP_EN_SQD_ASYNC_NOTIFY:
3466 return 0;
3467 case IB_QP_ACCESS_FLAGS:
3468 return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
3469 MLX5_QP_OPTPAR_RAE;
3470 case IB_QP_PKEY_INDEX:
3471 return MLX5_QP_OPTPAR_PKEY_INDEX;
3472 case IB_QP_PORT:
3473 return MLX5_QP_OPTPAR_PRI_PORT;
3474 case IB_QP_QKEY:
3475 return MLX5_QP_OPTPAR_Q_KEY;
3476 case IB_QP_AV:
3477 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
3478 MLX5_QP_OPTPAR_PRI_PORT;
3479 case IB_QP_PATH_MTU:
3480 return 0;
3481 case IB_QP_TIMEOUT:
3482 return MLX5_QP_OPTPAR_ACK_TIMEOUT;
3483 case IB_QP_RETRY_CNT:
3484 return MLX5_QP_OPTPAR_RETRY_COUNT;
3485 case IB_QP_RNR_RETRY:
3486 return MLX5_QP_OPTPAR_RNR_RETRY;
3487 case IB_QP_RQ_PSN:
3488 return 0;
3489 case IB_QP_MAX_QP_RD_ATOMIC:
3490 return MLX5_QP_OPTPAR_SRA_MAX;
3491 case IB_QP_ALT_PATH:
3492 return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
3493 case IB_QP_MIN_RNR_TIMER:
3494 return MLX5_QP_OPTPAR_RNR_TIMEOUT;
3495 case IB_QP_SQ_PSN:
3496 return 0;
3497 case IB_QP_MAX_DEST_RD_ATOMIC:
3498 return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
3499 MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
3500 case IB_QP_PATH_MIG_STATE:
3501 return MLX5_QP_OPTPAR_PM_STATE;
3502 case IB_QP_CAP:
3503 return 0;
3504 case IB_QP_DEST_QPN:
3505 return 0;
3506 }
3507 return 0;
3508 }
3509
ib_mask_to_mlx5_opt(int ib_mask)3510 static int ib_mask_to_mlx5_opt(int ib_mask)
3511 {
3512 int result = 0;
3513 int i;
3514
3515 for (i = 0; i < 8 * sizeof(int); i++) {
3516 if ((1 << i) & ib_mask)
3517 result |= ib_nr_to_mlx5_nr(1 << i);
3518 }
3519
3520 return result;
3521 }
3522
modify_raw_packet_qp_rq(struct mlx5_ib_dev * dev,struct mlx5_ib_rq * rq,int new_state,const struct mlx5_modify_raw_qp_param * raw_qp_param,struct ib_pd * pd)3523 static int modify_raw_packet_qp_rq(
3524 struct mlx5_ib_dev *dev, struct mlx5_ib_rq *rq, int new_state,
3525 const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
3526 {
3527 void *in;
3528 void *rqc;
3529 int inlen;
3530 int err;
3531
3532 inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
3533 in = kvzalloc(inlen, GFP_KERNEL);
3534 if (!in)
3535 return -ENOMEM;
3536
3537 MLX5_SET(modify_rq_in, in, rq_state, rq->state);
3538 MLX5_SET(modify_rq_in, in, uid, to_mpd(pd)->uid);
3539
3540 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
3541 MLX5_SET(rqc, rqc, state, new_state);
3542
3543 if (raw_qp_param->set_mask & MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID) {
3544 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
3545 MLX5_SET64(modify_rq_in, in, modify_bitmask,
3546 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
3547 MLX5_SET(rqc, rqc, counter_set_id, raw_qp_param->rq_q_ctr_id);
3548 } else
3549 dev_info_once(
3550 &dev->ib_dev.dev,
3551 "RAW PACKET QP counters are not supported on current FW\n");
3552 }
3553
3554 err = mlx5_core_modify_rq(dev->mdev, rq->base.mqp.qpn, in);
3555 if (err)
3556 goto out;
3557
3558 rq->state = new_state;
3559
3560 out:
3561 kvfree(in);
3562 return err;
3563 }
3564
modify_raw_packet_qp_sq(struct mlx5_core_dev * dev,struct mlx5_ib_sq * sq,int new_state,const struct mlx5_modify_raw_qp_param * raw_qp_param,struct ib_pd * pd)3565 static int modify_raw_packet_qp_sq(
3566 struct mlx5_core_dev *dev, struct mlx5_ib_sq *sq, int new_state,
3567 const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
3568 {
3569 struct mlx5_ib_qp *ibqp = sq->base.container_mibqp;
3570 struct mlx5_rate_limit old_rl = ibqp->rl;
3571 struct mlx5_rate_limit new_rl = old_rl;
3572 bool new_rate_added = false;
3573 u16 rl_index = 0;
3574 void *in;
3575 void *sqc;
3576 int inlen;
3577 int err;
3578
3579 inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
3580 in = kvzalloc(inlen, GFP_KERNEL);
3581 if (!in)
3582 return -ENOMEM;
3583
3584 MLX5_SET(modify_sq_in, in, uid, to_mpd(pd)->uid);
3585 MLX5_SET(modify_sq_in, in, sq_state, sq->state);
3586
3587 sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
3588 MLX5_SET(sqc, sqc, state, new_state);
3589
3590 if (raw_qp_param->set_mask & MLX5_RAW_QP_RATE_LIMIT) {
3591 if (new_state != MLX5_SQC_STATE_RDY)
3592 pr_warn("%s: Rate limit can only be changed when SQ is moving to RDY\n",
3593 __func__);
3594 else
3595 new_rl = raw_qp_param->rl;
3596 }
3597
3598 if (!mlx5_rl_are_equal(&old_rl, &new_rl)) {
3599 if (new_rl.rate) {
3600 err = mlx5_rl_add_rate(dev, &rl_index, &new_rl);
3601 if (err) {
3602 pr_err("Failed configuring rate limit(err %d): \
3603 rate %u, max_burst_sz %u, typical_pkt_sz %u\n",
3604 err, new_rl.rate, new_rl.max_burst_sz,
3605 new_rl.typical_pkt_sz);
3606
3607 goto out;
3608 }
3609 new_rate_added = true;
3610 }
3611
3612 MLX5_SET64(modify_sq_in, in, modify_bitmask, 1);
3613 /* index 0 means no limit */
3614 MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, rl_index);
3615 }
3616
3617 err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in);
3618 if (err) {
3619 /* Remove new rate from table if failed */
3620 if (new_rate_added)
3621 mlx5_rl_remove_rate(dev, &new_rl);
3622 goto out;
3623 }
3624
3625 /* Only remove the old rate after new rate was set */
3626 if ((old_rl.rate && !mlx5_rl_are_equal(&old_rl, &new_rl)) ||
3627 (new_state != MLX5_SQC_STATE_RDY)) {
3628 mlx5_rl_remove_rate(dev, &old_rl);
3629 if (new_state != MLX5_SQC_STATE_RDY)
3630 memset(&new_rl, 0, sizeof(new_rl));
3631 }
3632
3633 ibqp->rl = new_rl;
3634 sq->state = new_state;
3635
3636 out:
3637 kvfree(in);
3638 return err;
3639 }
3640
modify_raw_packet_qp(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,const struct mlx5_modify_raw_qp_param * raw_qp_param,u8 tx_affinity)3641 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
3642 const struct mlx5_modify_raw_qp_param *raw_qp_param,
3643 u8 tx_affinity)
3644 {
3645 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
3646 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
3647 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
3648 int modify_rq = !!qp->rq.wqe_cnt;
3649 int modify_sq = !!qp->sq.wqe_cnt;
3650 int rq_state;
3651 int sq_state;
3652 int err;
3653
3654 switch (raw_qp_param->operation) {
3655 case MLX5_CMD_OP_RST2INIT_QP:
3656 rq_state = MLX5_RQC_STATE_RDY;
3657 sq_state = MLX5_SQC_STATE_RST;
3658 break;
3659 case MLX5_CMD_OP_2ERR_QP:
3660 rq_state = MLX5_RQC_STATE_ERR;
3661 sq_state = MLX5_SQC_STATE_ERR;
3662 break;
3663 case MLX5_CMD_OP_2RST_QP:
3664 rq_state = MLX5_RQC_STATE_RST;
3665 sq_state = MLX5_SQC_STATE_RST;
3666 break;
3667 case MLX5_CMD_OP_RTR2RTS_QP:
3668 case MLX5_CMD_OP_RTS2RTS_QP:
3669 if (raw_qp_param->set_mask & ~MLX5_RAW_QP_RATE_LIMIT)
3670 return -EINVAL;
3671
3672 modify_rq = 0;
3673 sq_state = MLX5_SQC_STATE_RDY;
3674 break;
3675 case MLX5_CMD_OP_INIT2INIT_QP:
3676 case MLX5_CMD_OP_INIT2RTR_QP:
3677 if (raw_qp_param->set_mask)
3678 return -EINVAL;
3679 else
3680 return 0;
3681 default:
3682 WARN_ON(1);
3683 return -EINVAL;
3684 }
3685
3686 if (modify_rq) {
3687 err = modify_raw_packet_qp_rq(dev, rq, rq_state, raw_qp_param,
3688 qp->ibqp.pd);
3689 if (err)
3690 return err;
3691 }
3692
3693 if (modify_sq) {
3694 struct mlx5_flow_handle *flow_rule;
3695
3696 if (tx_affinity) {
3697 err = modify_raw_packet_tx_affinity(dev->mdev, sq,
3698 tx_affinity,
3699 qp->ibqp.pd);
3700 if (err)
3701 return err;
3702 }
3703
3704 flow_rule = create_flow_rule_vport_sq(dev, sq,
3705 raw_qp_param->port);
3706 if (IS_ERR(flow_rule))
3707 return PTR_ERR(flow_rule);
3708
3709 err = modify_raw_packet_qp_sq(dev->mdev, sq, sq_state,
3710 raw_qp_param, qp->ibqp.pd);
3711 if (err) {
3712 if (flow_rule)
3713 mlx5_del_flow_rules(flow_rule);
3714 return err;
3715 }
3716
3717 if (flow_rule) {
3718 destroy_flow_rule_vport_sq(sq);
3719 sq->flow_rule = flow_rule;
3720 }
3721
3722 return err;
3723 }
3724
3725 return 0;
3726 }
3727
get_tx_affinity_rr(struct mlx5_ib_dev * dev,struct ib_udata * udata)3728 static unsigned int get_tx_affinity_rr(struct mlx5_ib_dev *dev,
3729 struct ib_udata *udata)
3730 {
3731 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
3732 udata, struct mlx5_ib_ucontext, ibucontext);
3733 u8 port_num = mlx5_core_native_port_num(dev->mdev) - 1;
3734 atomic_t *tx_port_affinity;
3735
3736 if (ucontext)
3737 tx_port_affinity = &ucontext->tx_port_affinity;
3738 else
3739 tx_port_affinity = &dev->port[port_num].roce.tx_port_affinity;
3740
3741 return (unsigned int)atomic_add_return(1, tx_port_affinity) %
3742 MLX5_MAX_PORTS + 1;
3743 }
3744
qp_supports_affinity(struct mlx5_ib_qp * qp)3745 static bool qp_supports_affinity(struct mlx5_ib_qp *qp)
3746 {
3747 if ((qp->type == IB_QPT_RC) || (qp->type == IB_QPT_UD) ||
3748 (qp->type == IB_QPT_UC) || (qp->type == IB_QPT_RAW_PACKET) ||
3749 (qp->type == IB_QPT_XRC_INI) || (qp->type == IB_QPT_XRC_TGT) ||
3750 (qp->type == MLX5_IB_QPT_DCI))
3751 return true;
3752 return false;
3753 }
3754
get_tx_affinity(struct ib_qp * qp,const struct ib_qp_attr * attr,int attr_mask,u8 init,struct ib_udata * udata)3755 static unsigned int get_tx_affinity(struct ib_qp *qp,
3756 const struct ib_qp_attr *attr,
3757 int attr_mask, u8 init,
3758 struct ib_udata *udata)
3759 {
3760 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
3761 udata, struct mlx5_ib_ucontext, ibucontext);
3762 struct mlx5_ib_dev *dev = to_mdev(qp->device);
3763 struct mlx5_ib_qp *mqp = to_mqp(qp);
3764 struct mlx5_ib_qp_base *qp_base;
3765 unsigned int tx_affinity;
3766
3767 if (!(mlx5_ib_lag_should_assign_affinity(dev) &&
3768 qp_supports_affinity(mqp)))
3769 return 0;
3770
3771 if (mqp->flags & MLX5_IB_QP_CREATE_SQPN_QP1)
3772 tx_affinity = mqp->gsi_lag_port;
3773 else if (init)
3774 tx_affinity = get_tx_affinity_rr(dev, udata);
3775 else if ((attr_mask & IB_QP_AV) && attr->xmit_slave)
3776 tx_affinity =
3777 mlx5_lag_get_slave_port(dev->mdev, attr->xmit_slave);
3778 else
3779 return 0;
3780
3781 qp_base = &mqp->trans_qp.base;
3782 if (ucontext)
3783 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x ucontext %p\n",
3784 tx_affinity, qp_base->mqp.qpn, ucontext);
3785 else
3786 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x\n",
3787 tx_affinity, qp_base->mqp.qpn);
3788 return tx_affinity;
3789 }
3790
__mlx5_ib_qp_set_counter(struct ib_qp * qp,struct rdma_counter * counter)3791 static int __mlx5_ib_qp_set_counter(struct ib_qp *qp,
3792 struct rdma_counter *counter)
3793 {
3794 struct mlx5_ib_dev *dev = to_mdev(qp->device);
3795 u32 in[MLX5_ST_SZ_DW(rts2rts_qp_in)] = {};
3796 struct mlx5_ib_qp *mqp = to_mqp(qp);
3797 struct mlx5_ib_qp_base *base;
3798 u32 set_id;
3799 u32 *qpc;
3800
3801 if (counter)
3802 set_id = counter->id;
3803 else
3804 set_id = mlx5_ib_get_counters_id(dev, mqp->port - 1);
3805
3806 base = &mqp->trans_qp.base;
3807 MLX5_SET(rts2rts_qp_in, in, opcode, MLX5_CMD_OP_RTS2RTS_QP);
3808 MLX5_SET(rts2rts_qp_in, in, qpn, base->mqp.qpn);
3809 MLX5_SET(rts2rts_qp_in, in, uid, base->mqp.uid);
3810 MLX5_SET(rts2rts_qp_in, in, opt_param_mask,
3811 MLX5_QP_OPTPAR_COUNTER_SET_ID);
3812
3813 qpc = MLX5_ADDR_OF(rts2rts_qp_in, in, qpc);
3814 MLX5_SET(qpc, qpc, counter_set_id, set_id);
3815 return mlx5_cmd_exec_in(dev->mdev, rts2rts_qp, in);
3816 }
3817
__mlx5_ib_modify_qp(struct ib_qp * ibqp,const struct ib_qp_attr * attr,int attr_mask,enum ib_qp_state cur_state,enum ib_qp_state new_state,const struct mlx5_ib_modify_qp * ucmd,struct mlx5_ib_modify_qp_resp * resp,struct ib_udata * udata)3818 static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
3819 const struct ib_qp_attr *attr, int attr_mask,
3820 enum ib_qp_state cur_state,
3821 enum ib_qp_state new_state,
3822 const struct mlx5_ib_modify_qp *ucmd,
3823 struct mlx5_ib_modify_qp_resp *resp,
3824 struct ib_udata *udata)
3825 {
3826 static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
3827 [MLX5_QP_STATE_RST] = {
3828 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3829 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3830 [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_RST2INIT_QP,
3831 },
3832 [MLX5_QP_STATE_INIT] = {
3833 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3834 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3835 [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_INIT2INIT_QP,
3836 [MLX5_QP_STATE_RTR] = MLX5_CMD_OP_INIT2RTR_QP,
3837 },
3838 [MLX5_QP_STATE_RTR] = {
3839 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3840 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3841 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTR2RTS_QP,
3842 },
3843 [MLX5_QP_STATE_RTS] = {
3844 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3845 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3846 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTS2RTS_QP,
3847 },
3848 [MLX5_QP_STATE_SQD] = {
3849 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3850 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3851 },
3852 [MLX5_QP_STATE_SQER] = {
3853 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3854 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3855 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQERR2RTS_QP,
3856 },
3857 [MLX5_QP_STATE_ERR] = {
3858 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
3859 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
3860 }
3861 };
3862
3863 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3864 struct mlx5_ib_qp *qp = to_mqp(ibqp);
3865 struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
3866 struct mlx5_ib_cq *send_cq, *recv_cq;
3867 struct mlx5_ib_pd *pd;
3868 enum mlx5_qp_state mlx5_cur, mlx5_new;
3869 void *qpc, *pri_path, *alt_path;
3870 enum mlx5_qp_optpar optpar = 0;
3871 u32 set_id = 0;
3872 int mlx5_st;
3873 int err;
3874 u16 op;
3875 u8 tx_affinity = 0;
3876
3877 mlx5_st = to_mlx5_st(qp->type);
3878 if (mlx5_st < 0)
3879 return -EINVAL;
3880
3881 qpc = kzalloc(MLX5_ST_SZ_BYTES(qpc), GFP_KERNEL);
3882 if (!qpc)
3883 return -ENOMEM;
3884
3885 pd = to_mpd(qp->ibqp.pd);
3886 MLX5_SET(qpc, qpc, st, mlx5_st);
3887
3888 if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
3889 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
3890 } else {
3891 switch (attr->path_mig_state) {
3892 case IB_MIG_MIGRATED:
3893 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
3894 break;
3895 case IB_MIG_REARM:
3896 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_REARM);
3897 break;
3898 case IB_MIG_ARMED:
3899 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_ARMED);
3900 break;
3901 }
3902 }
3903
3904 tx_affinity = get_tx_affinity(ibqp, attr, attr_mask,
3905 cur_state == IB_QPS_RESET &&
3906 new_state == IB_QPS_INIT, udata);
3907
3908 MLX5_SET(qpc, qpc, lag_tx_port_affinity, tx_affinity);
3909 if (tx_affinity && new_state == IB_QPS_RTR &&
3910 MLX5_CAP_GEN(dev->mdev, init2_lag_tx_port_affinity))
3911 optpar |= MLX5_QP_OPTPAR_LAG_TX_AFF;
3912
3913 if (is_sqp(ibqp->qp_type)) {
3914 MLX5_SET(qpc, qpc, mtu, IB_MTU_256);
3915 MLX5_SET(qpc, qpc, log_msg_max, 8);
3916 } else if ((ibqp->qp_type == IB_QPT_UD &&
3917 !(qp->flags & IB_QP_CREATE_SOURCE_QPN)) ||
3918 ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
3919 MLX5_SET(qpc, qpc, mtu, IB_MTU_4096);
3920 MLX5_SET(qpc, qpc, log_msg_max, 12);
3921 } else if (attr_mask & IB_QP_PATH_MTU) {
3922 if (attr->path_mtu < IB_MTU_256 ||
3923 attr->path_mtu > IB_MTU_4096) {
3924 mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
3925 err = -EINVAL;
3926 goto out;
3927 }
3928 MLX5_SET(qpc, qpc, mtu, attr->path_mtu);
3929 MLX5_SET(qpc, qpc, log_msg_max,
3930 MLX5_CAP_GEN(dev->mdev, log_max_msg));
3931 }
3932
3933 if (attr_mask & IB_QP_DEST_QPN)
3934 MLX5_SET(qpc, qpc, remote_qpn, attr->dest_qp_num);
3935
3936 pri_path = MLX5_ADDR_OF(qpc, qpc, primary_address_path);
3937 alt_path = MLX5_ADDR_OF(qpc, qpc, secondary_address_path);
3938
3939 if (attr_mask & IB_QP_PKEY_INDEX)
3940 MLX5_SET(ads, pri_path, pkey_index, attr->pkey_index);
3941
3942 /* todo implement counter_index functionality */
3943
3944 if (is_sqp(ibqp->qp_type))
3945 MLX5_SET(ads, pri_path, vhca_port_num, qp->port);
3946
3947 if (attr_mask & IB_QP_PORT)
3948 MLX5_SET(ads, pri_path, vhca_port_num, attr->port_num);
3949
3950 if (attr_mask & IB_QP_AV) {
3951 err = mlx5_set_path(dev, qp, &attr->ah_attr, pri_path,
3952 attr_mask & IB_QP_PORT ? attr->port_num :
3953 qp->port,
3954 attr_mask, 0, attr, false);
3955 if (err)
3956 goto out;
3957 }
3958
3959 if (attr_mask & IB_QP_TIMEOUT)
3960 MLX5_SET(ads, pri_path, ack_timeout, attr->timeout);
3961
3962 if (attr_mask & IB_QP_ALT_PATH) {
3963 err = mlx5_set_path(dev, qp, &attr->alt_ah_attr, alt_path,
3964 attr->alt_port_num,
3965 attr_mask | IB_QP_PKEY_INDEX |
3966 IB_QP_TIMEOUT,
3967 0, attr, true);
3968 if (err)
3969 goto out;
3970 }
3971
3972 get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
3973 &send_cq, &recv_cq);
3974
3975 MLX5_SET(qpc, qpc, pd, pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
3976 if (send_cq)
3977 MLX5_SET(qpc, qpc, cqn_snd, send_cq->mcq.cqn);
3978 if (recv_cq)
3979 MLX5_SET(qpc, qpc, cqn_rcv, recv_cq->mcq.cqn);
3980
3981 MLX5_SET(qpc, qpc, log_ack_req_freq, MLX5_IB_ACK_REQ_FREQ);
3982
3983 if (attr_mask & IB_QP_RNR_RETRY)
3984 MLX5_SET(qpc, qpc, rnr_retry, attr->rnr_retry);
3985
3986 if (attr_mask & IB_QP_RETRY_CNT)
3987 MLX5_SET(qpc, qpc, retry_count, attr->retry_cnt);
3988
3989 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && attr->max_rd_atomic)
3990 MLX5_SET(qpc, qpc, log_sra_max, ilog2(attr->max_rd_atomic));
3991
3992 if (attr_mask & IB_QP_SQ_PSN)
3993 MLX5_SET(qpc, qpc, next_send_psn, attr->sq_psn);
3994
3995 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && attr->max_dest_rd_atomic)
3996 MLX5_SET(qpc, qpc, log_rra_max,
3997 ilog2(attr->max_dest_rd_atomic));
3998
3999 if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) {
4000 err = set_qpc_atomic_flags(qp, attr, attr_mask, qpc);
4001 if (err)
4002 goto out;
4003 }
4004
4005 if (attr_mask & IB_QP_MIN_RNR_TIMER)
4006 MLX5_SET(qpc, qpc, min_rnr_nak, attr->min_rnr_timer);
4007
4008 if (attr_mask & IB_QP_RQ_PSN)
4009 MLX5_SET(qpc, qpc, next_rcv_psn, attr->rq_psn);
4010
4011 if (attr_mask & IB_QP_QKEY)
4012 MLX5_SET(qpc, qpc, q_key, attr->qkey);
4013
4014 if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
4015 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
4016
4017 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
4018 u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
4019 qp->port) - 1;
4020
4021 /* Underlay port should be used - index 0 function per port */
4022 if (qp->flags & IB_QP_CREATE_SOURCE_QPN)
4023 port_num = 0;
4024
4025 if (ibqp->counter)
4026 set_id = ibqp->counter->id;
4027 else
4028 set_id = mlx5_ib_get_counters_id(dev, port_num);
4029 MLX5_SET(qpc, qpc, counter_set_id, set_id);
4030 }
4031
4032 if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
4033 MLX5_SET(qpc, qpc, rlky, 1);
4034
4035 if (qp->flags & MLX5_IB_QP_CREATE_SQPN_QP1)
4036 MLX5_SET(qpc, qpc, deth_sqpn, 1);
4037
4038 mlx5_cur = to_mlx5_state(cur_state);
4039 mlx5_new = to_mlx5_state(new_state);
4040
4041 if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
4042 !optab[mlx5_cur][mlx5_new]) {
4043 err = -EINVAL;
4044 goto out;
4045 }
4046
4047 op = optab[mlx5_cur][mlx5_new];
4048 optpar |= ib_mask_to_mlx5_opt(attr_mask);
4049 optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
4050
4051 if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
4052 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
4053 struct mlx5_modify_raw_qp_param raw_qp_param = {};
4054
4055 raw_qp_param.operation = op;
4056 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
4057 raw_qp_param.rq_q_ctr_id = set_id;
4058 raw_qp_param.set_mask |= MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID;
4059 }
4060
4061 if (attr_mask & IB_QP_PORT)
4062 raw_qp_param.port = attr->port_num;
4063
4064 if (attr_mask & IB_QP_RATE_LIMIT) {
4065 raw_qp_param.rl.rate = attr->rate_limit;
4066
4067 if (ucmd->burst_info.max_burst_sz) {
4068 if (attr->rate_limit &&
4069 MLX5_CAP_QOS(dev->mdev, packet_pacing_burst_bound)) {
4070 raw_qp_param.rl.max_burst_sz =
4071 ucmd->burst_info.max_burst_sz;
4072 } else {
4073 err = -EINVAL;
4074 goto out;
4075 }
4076 }
4077
4078 if (ucmd->burst_info.typical_pkt_sz) {
4079 if (attr->rate_limit &&
4080 MLX5_CAP_QOS(dev->mdev, packet_pacing_typical_size)) {
4081 raw_qp_param.rl.typical_pkt_sz =
4082 ucmd->burst_info.typical_pkt_sz;
4083 } else {
4084 err = -EINVAL;
4085 goto out;
4086 }
4087 }
4088
4089 raw_qp_param.set_mask |= MLX5_RAW_QP_RATE_LIMIT;
4090 }
4091
4092 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, tx_affinity);
4093 } else {
4094 if (udata) {
4095 /* For the kernel flows, the resp will stay zero */
4096 resp->ece_options =
4097 MLX5_CAP_GEN(dev->mdev, ece_support) ?
4098 ucmd->ece_options : 0;
4099 resp->response_length = sizeof(*resp);
4100 }
4101 err = mlx5_core_qp_modify(dev, op, optpar, qpc, &base->mqp,
4102 &resp->ece_options);
4103 }
4104
4105 if (err)
4106 goto out;
4107
4108 qp->state = new_state;
4109
4110 if (attr_mask & IB_QP_ACCESS_FLAGS)
4111 qp->trans_qp.atomic_rd_en = attr->qp_access_flags;
4112 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
4113 qp->trans_qp.resp_depth = attr->max_dest_rd_atomic;
4114 if (attr_mask & IB_QP_PORT)
4115 qp->port = attr->port_num;
4116 if (attr_mask & IB_QP_ALT_PATH)
4117 qp->trans_qp.alt_port = attr->alt_port_num;
4118
4119 /*
4120 * If we moved a kernel QP to RESET, clean up all old CQ
4121 * entries and reinitialize the QP.
4122 */
4123 if (new_state == IB_QPS_RESET &&
4124 !ibqp->uobject && ibqp->qp_type != IB_QPT_XRC_TGT) {
4125 mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
4126 ibqp->srq ? to_msrq(ibqp->srq) : NULL);
4127 if (send_cq != recv_cq)
4128 mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL);
4129
4130 qp->rq.head = 0;
4131 qp->rq.tail = 0;
4132 qp->sq.head = 0;
4133 qp->sq.tail = 0;
4134 qp->sq.cur_post = 0;
4135 if (qp->sq.wqe_cnt)
4136 qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
4137 qp->sq.last_poll = 0;
4138 qp->db.db[MLX5_RCV_DBR] = 0;
4139 qp->db.db[MLX5_SND_DBR] = 0;
4140 }
4141
4142 if ((new_state == IB_QPS_RTS) && qp->counter_pending) {
4143 err = __mlx5_ib_qp_set_counter(ibqp, ibqp->counter);
4144 if (!err)
4145 qp->counter_pending = 0;
4146 }
4147
4148 out:
4149 kfree(qpc);
4150 return err;
4151 }
4152
is_valid_mask(int mask,int req,int opt)4153 static inline bool is_valid_mask(int mask, int req, int opt)
4154 {
4155 if ((mask & req) != req)
4156 return false;
4157
4158 if (mask & ~(req | opt))
4159 return false;
4160
4161 return true;
4162 }
4163
4164 /* check valid transition for driver QP types
4165 * for now the only QP type that this function supports is DCI
4166 */
modify_dci_qp_is_ok(enum ib_qp_state cur_state,enum ib_qp_state new_state,enum ib_qp_attr_mask attr_mask)4167 static bool modify_dci_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state new_state,
4168 enum ib_qp_attr_mask attr_mask)
4169 {
4170 int req = IB_QP_STATE;
4171 int opt = 0;
4172
4173 if (new_state == IB_QPS_RESET) {
4174 return is_valid_mask(attr_mask, req, opt);
4175 } else if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
4176 req |= IB_QP_PKEY_INDEX | IB_QP_PORT;
4177 return is_valid_mask(attr_mask, req, opt);
4178 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {
4179 opt = IB_QP_PKEY_INDEX | IB_QP_PORT;
4180 return is_valid_mask(attr_mask, req, opt);
4181 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
4182 req |= IB_QP_PATH_MTU;
4183 opt = IB_QP_PKEY_INDEX | IB_QP_AV;
4184 return is_valid_mask(attr_mask, req, opt);
4185 } else if (cur_state == IB_QPS_RTR && new_state == IB_QPS_RTS) {
4186 req |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY |
4187 IB_QP_MAX_QP_RD_ATOMIC | IB_QP_SQ_PSN;
4188 opt = IB_QP_MIN_RNR_TIMER;
4189 return is_valid_mask(attr_mask, req, opt);
4190 } else if (cur_state == IB_QPS_RTS && new_state == IB_QPS_RTS) {
4191 opt = IB_QP_MIN_RNR_TIMER;
4192 return is_valid_mask(attr_mask, req, opt);
4193 } else if (cur_state != IB_QPS_RESET && new_state == IB_QPS_ERR) {
4194 return is_valid_mask(attr_mask, req, opt);
4195 }
4196 return false;
4197 }
4198
4199 /* mlx5_ib_modify_dct: modify a DCT QP
4200 * valid transitions are:
4201 * RESET to INIT: must set access_flags, pkey_index and port
4202 * INIT to RTR : must set min_rnr_timer, tclass, flow_label,
4203 * mtu, gid_index and hop_limit
4204 * Other transitions and attributes are illegal
4205 */
mlx5_ib_modify_dct(struct ib_qp * ibqp,struct ib_qp_attr * attr,int attr_mask,struct mlx5_ib_modify_qp * ucmd,struct ib_udata * udata)4206 static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr,
4207 int attr_mask, struct mlx5_ib_modify_qp *ucmd,
4208 struct ib_udata *udata)
4209 {
4210 struct mlx5_ib_qp *qp = to_mqp(ibqp);
4211 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4212 enum ib_qp_state cur_state, new_state;
4213 int required = IB_QP_STATE;
4214 void *dctc;
4215 int err;
4216
4217 if (!(attr_mask & IB_QP_STATE))
4218 return -EINVAL;
4219
4220 cur_state = qp->state;
4221 new_state = attr->qp_state;
4222
4223 dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
4224 if (MLX5_CAP_GEN(dev->mdev, ece_support) && ucmd->ece_options)
4225 /*
4226 * DCT doesn't initialize QP till modify command is executed,
4227 * so we need to overwrite previously set ECE field if user
4228 * provided any value except zero, which means not set/not
4229 * valid.
4230 */
4231 MLX5_SET(dctc, dctc, ece, ucmd->ece_options);
4232
4233 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
4234 u16 set_id;
4235
4236 required |= IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PORT;
4237 if (!is_valid_mask(attr_mask, required, 0))
4238 return -EINVAL;
4239
4240 if (attr->port_num == 0 ||
4241 attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports)) {
4242 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
4243 attr->port_num, dev->num_ports);
4244 return -EINVAL;
4245 }
4246 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
4247 MLX5_SET(dctc, dctc, rre, 1);
4248 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
4249 MLX5_SET(dctc, dctc, rwe, 1);
4250 if (attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC) {
4251 int atomic_mode;
4252
4253 atomic_mode = get_atomic_mode(dev, MLX5_IB_QPT_DCT);
4254 if (atomic_mode < 0)
4255 return -EOPNOTSUPP;
4256
4257 MLX5_SET(dctc, dctc, atomic_mode, atomic_mode);
4258 MLX5_SET(dctc, dctc, rae, 1);
4259 }
4260 MLX5_SET(dctc, dctc, pkey_index, attr->pkey_index);
4261 if (mlx5_lag_is_active(dev->mdev))
4262 MLX5_SET(dctc, dctc, port,
4263 get_tx_affinity_rr(dev, udata));
4264 else
4265 MLX5_SET(dctc, dctc, port, attr->port_num);
4266
4267 set_id = mlx5_ib_get_counters_id(dev, attr->port_num - 1);
4268 MLX5_SET(dctc, dctc, counter_set_id, set_id);
4269 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
4270 struct mlx5_ib_modify_qp_resp resp = {};
4271 u32 out[MLX5_ST_SZ_DW(create_dct_out)] = {};
4272 u32 min_resp_len = offsetofend(typeof(resp), dctn);
4273
4274 if (udata->outlen < min_resp_len)
4275 return -EINVAL;
4276 /*
4277 * If we don't have enough space for the ECE options,
4278 * simply indicate it with resp.response_length.
4279 */
4280 resp.response_length = (udata->outlen < sizeof(resp)) ?
4281 min_resp_len :
4282 sizeof(resp);
4283
4284 required |= IB_QP_MIN_RNR_TIMER | IB_QP_AV | IB_QP_PATH_MTU;
4285 if (!is_valid_mask(attr_mask, required, 0))
4286 return -EINVAL;
4287 MLX5_SET(dctc, dctc, min_rnr_nak, attr->min_rnr_timer);
4288 MLX5_SET(dctc, dctc, tclass, attr->ah_attr.grh.traffic_class);
4289 MLX5_SET(dctc, dctc, flow_label, attr->ah_attr.grh.flow_label);
4290 MLX5_SET(dctc, dctc, mtu, attr->path_mtu);
4291 MLX5_SET(dctc, dctc, my_addr_index, attr->ah_attr.grh.sgid_index);
4292 MLX5_SET(dctc, dctc, hop_limit, attr->ah_attr.grh.hop_limit);
4293
4294 err = mlx5_core_create_dct(dev, &qp->dct.mdct, qp->dct.in,
4295 MLX5_ST_SZ_BYTES(create_dct_in), out,
4296 sizeof(out));
4297 if (err)
4298 return err;
4299 resp.dctn = qp->dct.mdct.mqp.qpn;
4300 if (MLX5_CAP_GEN(dev->mdev, ece_support))
4301 resp.ece_options = MLX5_GET(create_dct_out, out, ece);
4302 err = ib_copy_to_udata(udata, &resp, resp.response_length);
4303 if (err) {
4304 mlx5_core_destroy_dct(dev, &qp->dct.mdct);
4305 return err;
4306 }
4307 } else {
4308 mlx5_ib_warn(dev, "Modify DCT: Invalid transition from %d to %d\n", cur_state, new_state);
4309 return -EINVAL;
4310 }
4311
4312 qp->state = new_state;
4313 return 0;
4314 }
4315
mlx5_ib_modify_qp_allowed(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,enum ib_qp_type qp_type)4316 static bool mlx5_ib_modify_qp_allowed(struct mlx5_ib_dev *dev,
4317 struct mlx5_ib_qp *qp,
4318 enum ib_qp_type qp_type)
4319 {
4320 if (dev->profile != &raw_eth_profile)
4321 return true;
4322
4323 if (qp_type == IB_QPT_RAW_PACKET || qp_type == MLX5_IB_QPT_REG_UMR)
4324 return true;
4325
4326 /* Internal QP used for wc testing, with NOPs in wq */
4327 if (qp->flags & MLX5_IB_QP_CREATE_WC_TEST)
4328 return true;
4329
4330 return false;
4331 }
4332
mlx5_ib_modify_qp(struct ib_qp * ibqp,struct ib_qp_attr * attr,int attr_mask,struct ib_udata * udata)4333 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
4334 int attr_mask, struct ib_udata *udata)
4335 {
4336 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4337 struct mlx5_ib_modify_qp_resp resp = {};
4338 struct mlx5_ib_qp *qp = to_mqp(ibqp);
4339 struct mlx5_ib_modify_qp ucmd = {};
4340 enum ib_qp_type qp_type;
4341 enum ib_qp_state cur_state, new_state;
4342 int err = -EINVAL;
4343
4344 if (!mlx5_ib_modify_qp_allowed(dev, qp, ibqp->qp_type))
4345 return -EOPNOTSUPP;
4346
4347 if (attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT))
4348 return -EOPNOTSUPP;
4349
4350 if (ibqp->rwq_ind_tbl)
4351 return -ENOSYS;
4352
4353 if (udata && udata->inlen) {
4354 if (udata->inlen < offsetofend(typeof(ucmd), ece_options))
4355 return -EINVAL;
4356
4357 if (udata->inlen > sizeof(ucmd) &&
4358 !ib_is_udata_cleared(udata, sizeof(ucmd),
4359 udata->inlen - sizeof(ucmd)))
4360 return -EOPNOTSUPP;
4361
4362 if (ib_copy_from_udata(&ucmd, udata,
4363 min(udata->inlen, sizeof(ucmd))))
4364 return -EFAULT;
4365
4366 if (ucmd.comp_mask ||
4367 memchr_inv(&ucmd.burst_info.reserved, 0,
4368 sizeof(ucmd.burst_info.reserved)))
4369 return -EOPNOTSUPP;
4370
4371 }
4372
4373 if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4374 return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
4375
4376 qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ? IB_QPT_GSI :
4377 qp->type;
4378
4379 if (qp_type == MLX5_IB_QPT_DCT)
4380 return mlx5_ib_modify_dct(ibqp, attr, attr_mask, &ucmd, udata);
4381
4382 mutex_lock(&qp->mutex);
4383
4384 cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
4385 new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
4386
4387 if (qp->flags & IB_QP_CREATE_SOURCE_QPN) {
4388 if (attr_mask & ~(IB_QP_STATE | IB_QP_CUR_STATE)) {
4389 mlx5_ib_dbg(dev, "invalid attr_mask 0x%x when underlay QP is used\n",
4390 attr_mask);
4391 goto out;
4392 }
4393 } else if (qp_type != MLX5_IB_QPT_REG_UMR &&
4394 qp_type != MLX5_IB_QPT_DCI &&
4395 !ib_modify_qp_is_ok(cur_state, new_state, qp_type,
4396 attr_mask)) {
4397 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
4398 cur_state, new_state, ibqp->qp_type, attr_mask);
4399 goto out;
4400 } else if (qp_type == MLX5_IB_QPT_DCI &&
4401 !modify_dci_qp_is_ok(cur_state, new_state, attr_mask)) {
4402 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
4403 cur_state, new_state, qp_type, attr_mask);
4404 goto out;
4405 }
4406
4407 if ((attr_mask & IB_QP_PORT) &&
4408 (attr->port_num == 0 ||
4409 attr->port_num > dev->num_ports)) {
4410 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
4411 attr->port_num, dev->num_ports);
4412 goto out;
4413 }
4414
4415 if ((attr_mask & IB_QP_PKEY_INDEX) &&
4416 attr->pkey_index >= dev->pkey_table_len) {
4417 mlx5_ib_dbg(dev, "invalid pkey index %d\n", attr->pkey_index);
4418 goto out;
4419 }
4420
4421 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
4422 attr->max_rd_atomic >
4423 (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_res_qp))) {
4424 mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n",
4425 attr->max_rd_atomic);
4426 goto out;
4427 }
4428
4429 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
4430 attr->max_dest_rd_atomic >
4431 (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_req_qp))) {
4432 mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n",
4433 attr->max_dest_rd_atomic);
4434 goto out;
4435 }
4436
4437 if (cur_state == new_state && cur_state == IB_QPS_RESET) {
4438 err = 0;
4439 goto out;
4440 }
4441
4442 err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state,
4443 new_state, &ucmd, &resp, udata);
4444
4445 /* resp.response_length is set in ECE supported flows only */
4446 if (!err && resp.response_length &&
4447 udata->outlen >= resp.response_length)
4448 /* Return -EFAULT to the user and expect him to destroy QP. */
4449 err = ib_copy_to_udata(udata, &resp, resp.response_length);
4450
4451 out:
4452 mutex_unlock(&qp->mutex);
4453 return err;
4454 }
4455
to_ib_qp_state(enum mlx5_qp_state mlx5_state)4456 static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
4457 {
4458 switch (mlx5_state) {
4459 case MLX5_QP_STATE_RST: return IB_QPS_RESET;
4460 case MLX5_QP_STATE_INIT: return IB_QPS_INIT;
4461 case MLX5_QP_STATE_RTR: return IB_QPS_RTR;
4462 case MLX5_QP_STATE_RTS: return IB_QPS_RTS;
4463 case MLX5_QP_STATE_SQ_DRAINING:
4464 case MLX5_QP_STATE_SQD: return IB_QPS_SQD;
4465 case MLX5_QP_STATE_SQER: return IB_QPS_SQE;
4466 case MLX5_QP_STATE_ERR: return IB_QPS_ERR;
4467 default: return -1;
4468 }
4469 }
4470
to_ib_mig_state(int mlx5_mig_state)4471 static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
4472 {
4473 switch (mlx5_mig_state) {
4474 case MLX5_QP_PM_ARMED: return IB_MIG_ARMED;
4475 case MLX5_QP_PM_REARM: return IB_MIG_REARM;
4476 case MLX5_QP_PM_MIGRATED: return IB_MIG_MIGRATED;
4477 default: return -1;
4478 }
4479 }
4480
to_rdma_ah_attr(struct mlx5_ib_dev * ibdev,struct rdma_ah_attr * ah_attr,void * path)4481 static void to_rdma_ah_attr(struct mlx5_ib_dev *ibdev,
4482 struct rdma_ah_attr *ah_attr, void *path)
4483 {
4484 int port = MLX5_GET(ads, path, vhca_port_num);
4485 int static_rate;
4486
4487 memset(ah_attr, 0, sizeof(*ah_attr));
4488
4489 if (!port || port > ibdev->num_ports)
4490 return;
4491
4492 ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, port);
4493
4494 rdma_ah_set_port_num(ah_attr, port);
4495 rdma_ah_set_sl(ah_attr, MLX5_GET(ads, path, sl));
4496
4497 rdma_ah_set_dlid(ah_attr, MLX5_GET(ads, path, rlid));
4498 rdma_ah_set_path_bits(ah_attr, MLX5_GET(ads, path, mlid));
4499
4500 static_rate = MLX5_GET(ads, path, stat_rate);
4501 rdma_ah_set_static_rate(ah_attr, mlx5_to_ib_rate_map(static_rate));
4502 if (MLX5_GET(ads, path, grh) ||
4503 ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) {
4504 rdma_ah_set_grh(ah_attr, NULL, MLX5_GET(ads, path, flow_label),
4505 MLX5_GET(ads, path, src_addr_index),
4506 MLX5_GET(ads, path, hop_limit),
4507 MLX5_GET(ads, path, tclass));
4508 rdma_ah_set_dgid_raw(ah_attr, MLX5_ADDR_OF(ads, path, rgid_rip));
4509 }
4510 }
4511
query_raw_packet_qp_sq_state(struct mlx5_ib_dev * dev,struct mlx5_ib_sq * sq,u8 * sq_state)4512 static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev,
4513 struct mlx5_ib_sq *sq,
4514 u8 *sq_state)
4515 {
4516 int err;
4517
4518 err = mlx5_core_query_sq_state(dev->mdev, sq->base.mqp.qpn, sq_state);
4519 if (err)
4520 goto out;
4521 sq->state = *sq_state;
4522
4523 out:
4524 return err;
4525 }
4526
query_raw_packet_qp_rq_state(struct mlx5_ib_dev * dev,struct mlx5_ib_rq * rq,u8 * rq_state)4527 static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev,
4528 struct mlx5_ib_rq *rq,
4529 u8 *rq_state)
4530 {
4531 void *out;
4532 void *rqc;
4533 int inlen;
4534 int err;
4535
4536 inlen = MLX5_ST_SZ_BYTES(query_rq_out);
4537 out = kvzalloc(inlen, GFP_KERNEL);
4538 if (!out)
4539 return -ENOMEM;
4540
4541 err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out);
4542 if (err)
4543 goto out;
4544
4545 rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context);
4546 *rq_state = MLX5_GET(rqc, rqc, state);
4547 rq->state = *rq_state;
4548
4549 out:
4550 kvfree(out);
4551 return err;
4552 }
4553
sqrq_state_to_qp_state(u8 sq_state,u8 rq_state,struct mlx5_ib_qp * qp,u8 * qp_state)4554 static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state,
4555 struct mlx5_ib_qp *qp, u8 *qp_state)
4556 {
4557 static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = {
4558 [MLX5_RQC_STATE_RST] = {
4559 [MLX5_SQC_STATE_RST] = IB_QPS_RESET,
4560 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE_BAD,
4561 [MLX5_SQC_STATE_ERR] = MLX5_QP_STATE_BAD,
4562 [MLX5_SQ_STATE_NA] = IB_QPS_RESET,
4563 },
4564 [MLX5_RQC_STATE_RDY] = {
4565 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE,
4566 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE,
4567 [MLX5_SQC_STATE_ERR] = IB_QPS_SQE,
4568 [MLX5_SQ_STATE_NA] = MLX5_QP_STATE,
4569 },
4570 [MLX5_RQC_STATE_ERR] = {
4571 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE_BAD,
4572 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE_BAD,
4573 [MLX5_SQC_STATE_ERR] = IB_QPS_ERR,
4574 [MLX5_SQ_STATE_NA] = IB_QPS_ERR,
4575 },
4576 [MLX5_RQ_STATE_NA] = {
4577 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE,
4578 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE,
4579 [MLX5_SQC_STATE_ERR] = MLX5_QP_STATE,
4580 [MLX5_SQ_STATE_NA] = MLX5_QP_STATE_BAD,
4581 },
4582 };
4583
4584 *qp_state = sqrq_trans[rq_state][sq_state];
4585
4586 if (*qp_state == MLX5_QP_STATE_BAD) {
4587 WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x",
4588 qp->raw_packet_qp.sq.base.mqp.qpn, sq_state,
4589 qp->raw_packet_qp.rq.base.mqp.qpn, rq_state);
4590 return -EINVAL;
4591 }
4592
4593 if (*qp_state == MLX5_QP_STATE)
4594 *qp_state = qp->state;
4595
4596 return 0;
4597 }
4598
query_raw_packet_qp_state(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,u8 * raw_packet_qp_state)4599 static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev,
4600 struct mlx5_ib_qp *qp,
4601 u8 *raw_packet_qp_state)
4602 {
4603 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
4604 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
4605 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
4606 int err;
4607 u8 sq_state = MLX5_SQ_STATE_NA;
4608 u8 rq_state = MLX5_RQ_STATE_NA;
4609
4610 if (qp->sq.wqe_cnt) {
4611 err = query_raw_packet_qp_sq_state(dev, sq, &sq_state);
4612 if (err)
4613 return err;
4614 }
4615
4616 if (qp->rq.wqe_cnt) {
4617 err = query_raw_packet_qp_rq_state(dev, rq, &rq_state);
4618 if (err)
4619 return err;
4620 }
4621
4622 return sqrq_state_to_qp_state(sq_state, rq_state, qp,
4623 raw_packet_qp_state);
4624 }
4625
query_qp_attr(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * qp,struct ib_qp_attr * qp_attr)4626 static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
4627 struct ib_qp_attr *qp_attr)
4628 {
4629 int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
4630 void *qpc, *pri_path, *alt_path;
4631 u32 *outb;
4632 int err;
4633
4634 outb = kzalloc(outlen, GFP_KERNEL);
4635 if (!outb)
4636 return -ENOMEM;
4637
4638 err = mlx5_core_qp_query(dev, &qp->trans_qp.base.mqp, outb, outlen);
4639 if (err)
4640 goto out;
4641
4642 qpc = MLX5_ADDR_OF(query_qp_out, outb, qpc);
4643
4644 qp->state = to_ib_qp_state(MLX5_GET(qpc, qpc, state));
4645 if (MLX5_GET(qpc, qpc, state) == MLX5_QP_STATE_SQ_DRAINING)
4646 qp_attr->sq_draining = 1;
4647
4648 qp_attr->path_mtu = MLX5_GET(qpc, qpc, mtu);
4649 qp_attr->path_mig_state = to_ib_mig_state(MLX5_GET(qpc, qpc, pm_state));
4650 qp_attr->qkey = MLX5_GET(qpc, qpc, q_key);
4651 qp_attr->rq_psn = MLX5_GET(qpc, qpc, next_rcv_psn);
4652 qp_attr->sq_psn = MLX5_GET(qpc, qpc, next_send_psn);
4653 qp_attr->dest_qp_num = MLX5_GET(qpc, qpc, remote_qpn);
4654
4655 if (MLX5_GET(qpc, qpc, rre))
4656 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_READ;
4657 if (MLX5_GET(qpc, qpc, rwe))
4658 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_WRITE;
4659 if (MLX5_GET(qpc, qpc, rae))
4660 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_ATOMIC;
4661
4662 qp_attr->max_rd_atomic = 1 << MLX5_GET(qpc, qpc, log_sra_max);
4663 qp_attr->max_dest_rd_atomic = 1 << MLX5_GET(qpc, qpc, log_rra_max);
4664 qp_attr->min_rnr_timer = MLX5_GET(qpc, qpc, min_rnr_nak);
4665 qp_attr->retry_cnt = MLX5_GET(qpc, qpc, retry_count);
4666 qp_attr->rnr_retry = MLX5_GET(qpc, qpc, rnr_retry);
4667
4668 pri_path = MLX5_ADDR_OF(qpc, qpc, primary_address_path);
4669 alt_path = MLX5_ADDR_OF(qpc, qpc, secondary_address_path);
4670
4671 if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC ||
4672 qp->ibqp.qp_type == IB_QPT_XRC_INI ||
4673 qp->ibqp.qp_type == IB_QPT_XRC_TGT) {
4674 to_rdma_ah_attr(dev, &qp_attr->ah_attr, pri_path);
4675 to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, alt_path);
4676 qp_attr->alt_pkey_index = MLX5_GET(ads, alt_path, pkey_index);
4677 qp_attr->alt_port_num = MLX5_GET(ads, alt_path, vhca_port_num);
4678 }
4679
4680 qp_attr->pkey_index = MLX5_GET(ads, pri_path, pkey_index);
4681 qp_attr->port_num = MLX5_GET(ads, pri_path, vhca_port_num);
4682 qp_attr->timeout = MLX5_GET(ads, pri_path, ack_timeout);
4683 qp_attr->alt_timeout = MLX5_GET(ads, alt_path, ack_timeout);
4684
4685 out:
4686 kfree(outb);
4687 return err;
4688 }
4689
mlx5_ib_dct_query_qp(struct mlx5_ib_dev * dev,struct mlx5_ib_qp * mqp,struct ib_qp_attr * qp_attr,int qp_attr_mask,struct ib_qp_init_attr * qp_init_attr)4690 static int mlx5_ib_dct_query_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *mqp,
4691 struct ib_qp_attr *qp_attr, int qp_attr_mask,
4692 struct ib_qp_init_attr *qp_init_attr)
4693 {
4694 struct mlx5_core_dct *dct = &mqp->dct.mdct;
4695 u32 *out;
4696 u32 access_flags = 0;
4697 int outlen = MLX5_ST_SZ_BYTES(query_dct_out);
4698 void *dctc;
4699 int err;
4700 int supported_mask = IB_QP_STATE |
4701 IB_QP_ACCESS_FLAGS |
4702 IB_QP_PORT |
4703 IB_QP_MIN_RNR_TIMER |
4704 IB_QP_AV |
4705 IB_QP_PATH_MTU |
4706 IB_QP_PKEY_INDEX;
4707
4708 if (qp_attr_mask & ~supported_mask)
4709 return -EINVAL;
4710 if (mqp->state != IB_QPS_RTR)
4711 return -EINVAL;
4712
4713 out = kzalloc(outlen, GFP_KERNEL);
4714 if (!out)
4715 return -ENOMEM;
4716
4717 err = mlx5_core_dct_query(dev, dct, out, outlen);
4718 if (err)
4719 goto out;
4720
4721 dctc = MLX5_ADDR_OF(query_dct_out, out, dct_context_entry);
4722
4723 if (qp_attr_mask & IB_QP_STATE)
4724 qp_attr->qp_state = IB_QPS_RTR;
4725
4726 if (qp_attr_mask & IB_QP_ACCESS_FLAGS) {
4727 if (MLX5_GET(dctc, dctc, rre))
4728 access_flags |= IB_ACCESS_REMOTE_READ;
4729 if (MLX5_GET(dctc, dctc, rwe))
4730 access_flags |= IB_ACCESS_REMOTE_WRITE;
4731 if (MLX5_GET(dctc, dctc, rae))
4732 access_flags |= IB_ACCESS_REMOTE_ATOMIC;
4733 qp_attr->qp_access_flags = access_flags;
4734 }
4735
4736 if (qp_attr_mask & IB_QP_PORT)
4737 qp_attr->port_num = MLX5_GET(dctc, dctc, port);
4738 if (qp_attr_mask & IB_QP_MIN_RNR_TIMER)
4739 qp_attr->min_rnr_timer = MLX5_GET(dctc, dctc, min_rnr_nak);
4740 if (qp_attr_mask & IB_QP_AV) {
4741 qp_attr->ah_attr.grh.traffic_class = MLX5_GET(dctc, dctc, tclass);
4742 qp_attr->ah_attr.grh.flow_label = MLX5_GET(dctc, dctc, flow_label);
4743 qp_attr->ah_attr.grh.sgid_index = MLX5_GET(dctc, dctc, my_addr_index);
4744 qp_attr->ah_attr.grh.hop_limit = MLX5_GET(dctc, dctc, hop_limit);
4745 }
4746 if (qp_attr_mask & IB_QP_PATH_MTU)
4747 qp_attr->path_mtu = MLX5_GET(dctc, dctc, mtu);
4748 if (qp_attr_mask & IB_QP_PKEY_INDEX)
4749 qp_attr->pkey_index = MLX5_GET(dctc, dctc, pkey_index);
4750 out:
4751 kfree(out);
4752 return err;
4753 }
4754
mlx5_ib_query_qp(struct ib_qp * ibqp,struct ib_qp_attr * qp_attr,int qp_attr_mask,struct ib_qp_init_attr * qp_init_attr)4755 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
4756 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
4757 {
4758 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4759 struct mlx5_ib_qp *qp = to_mqp(ibqp);
4760 int err = 0;
4761 u8 raw_packet_qp_state;
4762
4763 if (ibqp->rwq_ind_tbl)
4764 return -ENOSYS;
4765
4766 if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4767 return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
4768 qp_init_attr);
4769
4770 /* Not all of output fields are applicable, make sure to zero them */
4771 memset(qp_init_attr, 0, sizeof(*qp_init_attr));
4772 memset(qp_attr, 0, sizeof(*qp_attr));
4773
4774 if (unlikely(qp->type == MLX5_IB_QPT_DCT))
4775 return mlx5_ib_dct_query_qp(dev, qp, qp_attr,
4776 qp_attr_mask, qp_init_attr);
4777
4778 mutex_lock(&qp->mutex);
4779
4780 if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
4781 qp->flags & IB_QP_CREATE_SOURCE_QPN) {
4782 err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
4783 if (err)
4784 goto out;
4785 qp->state = raw_packet_qp_state;
4786 qp_attr->port_num = 1;
4787 } else {
4788 err = query_qp_attr(dev, qp, qp_attr);
4789 if (err)
4790 goto out;
4791 }
4792
4793 qp_attr->qp_state = qp->state;
4794 qp_attr->cur_qp_state = qp_attr->qp_state;
4795 qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt;
4796 qp_attr->cap.max_recv_sge = qp->rq.max_gs;
4797
4798 if (!ibqp->uobject) {
4799 qp_attr->cap.max_send_wr = qp->sq.max_post;
4800 qp_attr->cap.max_send_sge = qp->sq.max_gs;
4801 qp_init_attr->qp_context = ibqp->qp_context;
4802 } else {
4803 qp_attr->cap.max_send_wr = 0;
4804 qp_attr->cap.max_send_sge = 0;
4805 }
4806
4807 qp_init_attr->qp_type = ibqp->qp_type;
4808 qp_init_attr->recv_cq = ibqp->recv_cq;
4809 qp_init_attr->send_cq = ibqp->send_cq;
4810 qp_init_attr->srq = ibqp->srq;
4811 qp_attr->cap.max_inline_data = qp->max_inline_data;
4812
4813 qp_init_attr->cap = qp_attr->cap;
4814
4815 qp_init_attr->create_flags = qp->flags;
4816
4817 qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
4818 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
4819
4820 out:
4821 mutex_unlock(&qp->mutex);
4822 return err;
4823 }
4824
mlx5_ib_alloc_xrcd(struct ib_xrcd * ibxrcd,struct ib_udata * udata)4825 int mlx5_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
4826 {
4827 struct mlx5_ib_dev *dev = to_mdev(ibxrcd->device);
4828 struct mlx5_ib_xrcd *xrcd = to_mxrcd(ibxrcd);
4829
4830 if (!MLX5_CAP_GEN(dev->mdev, xrc))
4831 return -EOPNOTSUPP;
4832
4833 return mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
4834 }
4835
mlx5_ib_dealloc_xrcd(struct ib_xrcd * xrcd,struct ib_udata * udata)4836 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
4837 {
4838 struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
4839 u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
4840
4841 return mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
4842 }
4843
mlx5_ib_wq_event(struct mlx5_core_qp * core_qp,int type)4844 static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
4845 {
4846 struct mlx5_ib_rwq *rwq = to_mibrwq(core_qp);
4847 struct mlx5_ib_dev *dev = to_mdev(rwq->ibwq.device);
4848 struct ib_event event;
4849
4850 if (rwq->ibwq.event_handler) {
4851 event.device = rwq->ibwq.device;
4852 event.element.wq = &rwq->ibwq;
4853 switch (type) {
4854 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
4855 event.event = IB_EVENT_WQ_FATAL;
4856 break;
4857 default:
4858 mlx5_ib_warn(dev, "Unexpected event type %d on WQ %06x\n", type, core_qp->qpn);
4859 return;
4860 }
4861
4862 rwq->ibwq.event_handler(&event, rwq->ibwq.wq_context);
4863 }
4864 }
4865
set_delay_drop(struct mlx5_ib_dev * dev)4866 static int set_delay_drop(struct mlx5_ib_dev *dev)
4867 {
4868 int err = 0;
4869
4870 mutex_lock(&dev->delay_drop.lock);
4871 if (dev->delay_drop.activate)
4872 goto out;
4873
4874 err = mlx5_core_set_delay_drop(dev, dev->delay_drop.timeout);
4875 if (err)
4876 goto out;
4877
4878 dev->delay_drop.activate = true;
4879 out:
4880 mutex_unlock(&dev->delay_drop.lock);
4881
4882 if (!err)
4883 atomic_inc(&dev->delay_drop.rqs_cnt);
4884 return err;
4885 }
4886
create_rq(struct mlx5_ib_rwq * rwq,struct ib_pd * pd,struct ib_wq_init_attr * init_attr)4887 static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
4888 struct ib_wq_init_attr *init_attr)
4889 {
4890 struct mlx5_ib_dev *dev;
4891 int has_net_offloads;
4892 __be64 *rq_pas0;
4893 int ts_format;
4894 void *in;
4895 void *rqc;
4896 void *wq;
4897 int inlen;
4898 int err;
4899
4900 dev = to_mdev(pd->device);
4901
4902 ts_format = get_rq_ts_format(dev, to_mcq(init_attr->cq));
4903 if (ts_format < 0)
4904 return ts_format;
4905
4906 inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
4907 in = kvzalloc(inlen, GFP_KERNEL);
4908 if (!in)
4909 return -ENOMEM;
4910
4911 MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
4912 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
4913 MLX5_SET(rqc, rqc, mem_rq_type,
4914 MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
4915 MLX5_SET(rqc, rqc, ts_format, ts_format);
4916 MLX5_SET(rqc, rqc, user_index, rwq->user_index);
4917 MLX5_SET(rqc, rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
4918 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
4919 MLX5_SET(rqc, rqc, flush_in_error_en, 1);
4920 wq = MLX5_ADDR_OF(rqc, rqc, wq);
4921 MLX5_SET(wq, wq, wq_type,
4922 rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ ?
4923 MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ : MLX5_WQ_TYPE_CYCLIC);
4924 if (init_attr->create_flags & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
4925 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
4926 mlx5_ib_dbg(dev, "Scatter end padding is not supported\n");
4927 err = -EOPNOTSUPP;
4928 goto out;
4929 } else {
4930 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
4931 }
4932 }
4933 MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
4934 if (rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ) {
4935 /*
4936 * In Firmware number of strides in each WQE is:
4937 * "512 * 2^single_wqe_log_num_of_strides"
4938 * Values 3 to 8 are accepted as 10 to 15, 9 to 18 are
4939 * accepted as 0 to 9
4940 */
4941 static const u8 fw_map[] = { 10, 11, 12, 13, 14, 15, 0, 1,
4942 2, 3, 4, 5, 6, 7, 8, 9 };
4943 MLX5_SET(wq, wq, two_byte_shift_en, rwq->two_byte_shift_en);
4944 MLX5_SET(wq, wq, log_wqe_stride_size,
4945 rwq->single_stride_log_num_of_bytes -
4946 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES);
4947 MLX5_SET(wq, wq, log_wqe_num_of_strides,
4948 fw_map[rwq->log_num_strides -
4949 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES]);
4950 }
4951 MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
4952 MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
4953 MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
4954 MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
4955 MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
4956 MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
4957 has_net_offloads = MLX5_CAP_GEN(dev->mdev, eth_net_offloads);
4958 if (init_attr->create_flags & IB_WQ_FLAGS_CVLAN_STRIPPING) {
4959 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
4960 mlx5_ib_dbg(dev, "VLAN offloads are not supported\n");
4961 err = -EOPNOTSUPP;
4962 goto out;
4963 }
4964 } else {
4965 MLX5_SET(rqc, rqc, vsd, 1);
4966 }
4967 if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) {
4968 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, scatter_fcs))) {
4969 mlx5_ib_dbg(dev, "Scatter FCS is not supported\n");
4970 err = -EOPNOTSUPP;
4971 goto out;
4972 }
4973 MLX5_SET(rqc, rqc, scatter_fcs, 1);
4974 }
4975 if (init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
4976 if (!(dev->ib_dev.attrs.raw_packet_caps &
4977 IB_RAW_PACKET_CAP_DELAY_DROP)) {
4978 mlx5_ib_dbg(dev, "Delay drop is not supported\n");
4979 err = -EOPNOTSUPP;
4980 goto out;
4981 }
4982 MLX5_SET(rqc, rqc, delay_drop_en, 1);
4983 }
4984 rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
4985 mlx5_ib_populate_pas(rwq->umem, 1UL << rwq->page_shift, rq_pas0, 0);
4986 err = mlx5_core_create_rq_tracked(dev, in, inlen, &rwq->core_qp);
4987 if (!err && init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
4988 err = set_delay_drop(dev);
4989 if (err) {
4990 mlx5_ib_warn(dev, "Failed to enable delay drop err=%d\n",
4991 err);
4992 mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp);
4993 } else {
4994 rwq->create_flags |= MLX5_IB_WQ_FLAGS_DELAY_DROP;
4995 }
4996 }
4997 out:
4998 kvfree(in);
4999 return err;
5000 }
5001
set_user_rq_size(struct mlx5_ib_dev * dev,struct ib_wq_init_attr * wq_init_attr,struct mlx5_ib_create_wq * ucmd,struct mlx5_ib_rwq * rwq)5002 static int set_user_rq_size(struct mlx5_ib_dev *dev,
5003 struct ib_wq_init_attr *wq_init_attr,
5004 struct mlx5_ib_create_wq *ucmd,
5005 struct mlx5_ib_rwq *rwq)
5006 {
5007 /* Sanity check RQ size before proceeding */
5008 if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
5009 return -EINVAL;
5010
5011 if (!ucmd->rq_wqe_count)
5012 return -EINVAL;
5013
5014 rwq->wqe_count = ucmd->rq_wqe_count;
5015 rwq->wqe_shift = ucmd->rq_wqe_shift;
5016 if (check_shl_overflow(rwq->wqe_count, rwq->wqe_shift, &rwq->buf_size))
5017 return -EINVAL;
5018
5019 rwq->log_rq_stride = rwq->wqe_shift;
5020 rwq->log_rq_size = ilog2(rwq->wqe_count);
5021 return 0;
5022 }
5023
log_of_strides_valid(struct mlx5_ib_dev * dev,u32 log_num_strides)5024 static bool log_of_strides_valid(struct mlx5_ib_dev *dev, u32 log_num_strides)
5025 {
5026 if ((log_num_strides > MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES) ||
5027 (log_num_strides < MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES))
5028 return false;
5029
5030 if (!MLX5_CAP_GEN(dev->mdev, ext_stride_num_range) &&
5031 (log_num_strides < MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES))
5032 return false;
5033
5034 return true;
5035 }
5036
prepare_user_rq(struct ib_pd * pd,struct ib_wq_init_attr * init_attr,struct ib_udata * udata,struct mlx5_ib_rwq * rwq)5037 static int prepare_user_rq(struct ib_pd *pd,
5038 struct ib_wq_init_attr *init_attr,
5039 struct ib_udata *udata,
5040 struct mlx5_ib_rwq *rwq)
5041 {
5042 struct mlx5_ib_dev *dev = to_mdev(pd->device);
5043 struct mlx5_ib_create_wq ucmd = {};
5044 int err;
5045 size_t required_cmd_sz;
5046
5047 required_cmd_sz = offsetofend(struct mlx5_ib_create_wq,
5048 single_stride_log_num_of_bytes);
5049 if (udata->inlen < required_cmd_sz) {
5050 mlx5_ib_dbg(dev, "invalid inlen\n");
5051 return -EINVAL;
5052 }
5053
5054 if (udata->inlen > sizeof(ucmd) &&
5055 !ib_is_udata_cleared(udata, sizeof(ucmd),
5056 udata->inlen - sizeof(ucmd))) {
5057 mlx5_ib_dbg(dev, "inlen is not supported\n");
5058 return -EOPNOTSUPP;
5059 }
5060
5061 if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
5062 mlx5_ib_dbg(dev, "copy failed\n");
5063 return -EFAULT;
5064 }
5065
5066 if (ucmd.comp_mask & (~MLX5_IB_CREATE_WQ_STRIDING_RQ)) {
5067 mlx5_ib_dbg(dev, "invalid comp mask\n");
5068 return -EOPNOTSUPP;
5069 } else if (ucmd.comp_mask & MLX5_IB_CREATE_WQ_STRIDING_RQ) {
5070 if (!MLX5_CAP_GEN(dev->mdev, striding_rq)) {
5071 mlx5_ib_dbg(dev, "Striding RQ is not supported\n");
5072 return -EOPNOTSUPP;
5073 }
5074 if ((ucmd.single_stride_log_num_of_bytes <
5075 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES) ||
5076 (ucmd.single_stride_log_num_of_bytes >
5077 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES)) {
5078 mlx5_ib_dbg(dev, "Invalid log stride size (%u. Range is %u - %u)\n",
5079 ucmd.single_stride_log_num_of_bytes,
5080 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES,
5081 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES);
5082 return -EINVAL;
5083 }
5084 if (!log_of_strides_valid(dev,
5085 ucmd.single_wqe_log_num_of_strides)) {
5086 mlx5_ib_dbg(
5087 dev,
5088 "Invalid log num strides (%u. Range is %u - %u)\n",
5089 ucmd.single_wqe_log_num_of_strides,
5090 MLX5_CAP_GEN(dev->mdev, ext_stride_num_range) ?
5091 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES :
5092 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES,
5093 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES);
5094 return -EINVAL;
5095 }
5096 rwq->single_stride_log_num_of_bytes =
5097 ucmd.single_stride_log_num_of_bytes;
5098 rwq->log_num_strides = ucmd.single_wqe_log_num_of_strides;
5099 rwq->two_byte_shift_en = !!ucmd.two_byte_shift_en;
5100 rwq->create_flags |= MLX5_IB_WQ_FLAGS_STRIDING_RQ;
5101 }
5102
5103 err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
5104 if (err) {
5105 mlx5_ib_dbg(dev, "err %d\n", err);
5106 return err;
5107 }
5108
5109 err = create_user_rq(dev, pd, udata, rwq, &ucmd);
5110 if (err) {
5111 mlx5_ib_dbg(dev, "err %d\n", err);
5112 return err;
5113 }
5114
5115 rwq->user_index = ucmd.user_index;
5116 return 0;
5117 }
5118
mlx5_ib_create_wq(struct ib_pd * pd,struct ib_wq_init_attr * init_attr,struct ib_udata * udata)5119 struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
5120 struct ib_wq_init_attr *init_attr,
5121 struct ib_udata *udata)
5122 {
5123 struct mlx5_ib_dev *dev;
5124 struct mlx5_ib_rwq *rwq;
5125 struct mlx5_ib_create_wq_resp resp = {};
5126 size_t min_resp_len;
5127 int err;
5128
5129 if (!udata)
5130 return ERR_PTR(-ENOSYS);
5131
5132 min_resp_len = offsetofend(struct mlx5_ib_create_wq_resp, reserved);
5133 if (udata->outlen && udata->outlen < min_resp_len)
5134 return ERR_PTR(-EINVAL);
5135
5136 if (!capable(CAP_SYS_RAWIO) &&
5137 init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP)
5138 return ERR_PTR(-EPERM);
5139
5140 dev = to_mdev(pd->device);
5141 switch (init_attr->wq_type) {
5142 case IB_WQT_RQ:
5143 rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
5144 if (!rwq)
5145 return ERR_PTR(-ENOMEM);
5146 err = prepare_user_rq(pd, init_attr, udata, rwq);
5147 if (err)
5148 goto err;
5149 err = create_rq(rwq, pd, init_attr);
5150 if (err)
5151 goto err_user_rq;
5152 break;
5153 default:
5154 mlx5_ib_dbg(dev, "unsupported wq type %d\n",
5155 init_attr->wq_type);
5156 return ERR_PTR(-EINVAL);
5157 }
5158
5159 rwq->ibwq.wq_num = rwq->core_qp.qpn;
5160 rwq->ibwq.state = IB_WQS_RESET;
5161 if (udata->outlen) {
5162 resp.response_length = offsetofend(
5163 struct mlx5_ib_create_wq_resp, response_length);
5164 err = ib_copy_to_udata(udata, &resp, resp.response_length);
5165 if (err)
5166 goto err_copy;
5167 }
5168
5169 rwq->core_qp.event = mlx5_ib_wq_event;
5170 rwq->ibwq.event_handler = init_attr->event_handler;
5171 return &rwq->ibwq;
5172
5173 err_copy:
5174 mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp);
5175 err_user_rq:
5176 destroy_user_rq(dev, pd, rwq, udata);
5177 err:
5178 kfree(rwq);
5179 return ERR_PTR(err);
5180 }
5181
mlx5_ib_destroy_wq(struct ib_wq * wq,struct ib_udata * udata)5182 int mlx5_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata)
5183 {
5184 struct mlx5_ib_dev *dev = to_mdev(wq->device);
5185 struct mlx5_ib_rwq *rwq = to_mrwq(wq);
5186 int ret;
5187
5188 ret = mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp);
5189 if (ret)
5190 return ret;
5191 destroy_user_rq(dev, wq->pd, rwq, udata);
5192 kfree(rwq);
5193 return 0;
5194 }
5195
mlx5_ib_create_rwq_ind_table(struct ib_rwq_ind_table * ib_rwq_ind_table,struct ib_rwq_ind_table_init_attr * init_attr,struct ib_udata * udata)5196 int mlx5_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_table,
5197 struct ib_rwq_ind_table_init_attr *init_attr,
5198 struct ib_udata *udata)
5199 {
5200 struct mlx5_ib_rwq_ind_table *rwq_ind_tbl =
5201 to_mrwq_ind_table(ib_rwq_ind_table);
5202 struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_table->device);
5203 int sz = 1 << init_attr->log_ind_tbl_size;
5204 struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
5205 size_t min_resp_len;
5206 int inlen;
5207 int err;
5208 int i;
5209 u32 *in;
5210 void *rqtc;
5211
5212 if (udata->inlen > 0 &&
5213 !ib_is_udata_cleared(udata, 0,
5214 udata->inlen))
5215 return -EOPNOTSUPP;
5216
5217 if (init_attr->log_ind_tbl_size >
5218 MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) {
5219 mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n",
5220 init_attr->log_ind_tbl_size,
5221 MLX5_CAP_GEN(dev->mdev, log_max_rqt_size));
5222 return -EINVAL;
5223 }
5224
5225 min_resp_len =
5226 offsetofend(struct mlx5_ib_create_rwq_ind_tbl_resp, reserved);
5227 if (udata->outlen && udata->outlen < min_resp_len)
5228 return -EINVAL;
5229
5230 inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
5231 in = kvzalloc(inlen, GFP_KERNEL);
5232 if (!in)
5233 return -ENOMEM;
5234
5235 rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
5236
5237 MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
5238 MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
5239
5240 for (i = 0; i < sz; i++)
5241 MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
5242
5243 rwq_ind_tbl->uid = to_mpd(init_attr->ind_tbl[0]->pd)->uid;
5244 MLX5_SET(create_rqt_in, in, uid, rwq_ind_tbl->uid);
5245
5246 err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
5247 kvfree(in);
5248 if (err)
5249 return err;
5250
5251 rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
5252 if (udata->outlen) {
5253 resp.response_length =
5254 offsetofend(struct mlx5_ib_create_rwq_ind_tbl_resp,
5255 response_length);
5256 err = ib_copy_to_udata(udata, &resp, resp.response_length);
5257 if (err)
5258 goto err_copy;
5259 }
5260
5261 return 0;
5262
5263 err_copy:
5264 mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
5265 return err;
5266 }
5267
mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table * ib_rwq_ind_tbl)5268 int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
5269 {
5270 struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
5271 struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
5272
5273 return mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
5274 }
5275
mlx5_ib_modify_wq(struct ib_wq * wq,struct ib_wq_attr * wq_attr,u32 wq_attr_mask,struct ib_udata * udata)5276 int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
5277 u32 wq_attr_mask, struct ib_udata *udata)
5278 {
5279 struct mlx5_ib_dev *dev = to_mdev(wq->device);
5280 struct mlx5_ib_rwq *rwq = to_mrwq(wq);
5281 struct mlx5_ib_modify_wq ucmd = {};
5282 size_t required_cmd_sz;
5283 int curr_wq_state;
5284 int wq_state;
5285 int inlen;
5286 int err;
5287 void *rqc;
5288 void *in;
5289
5290 required_cmd_sz = offsetofend(struct mlx5_ib_modify_wq, reserved);
5291 if (udata->inlen < required_cmd_sz)
5292 return -EINVAL;
5293
5294 if (udata->inlen > sizeof(ucmd) &&
5295 !ib_is_udata_cleared(udata, sizeof(ucmd),
5296 udata->inlen - sizeof(ucmd)))
5297 return -EOPNOTSUPP;
5298
5299 if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
5300 return -EFAULT;
5301
5302 if (ucmd.comp_mask || ucmd.reserved)
5303 return -EOPNOTSUPP;
5304
5305 inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
5306 in = kvzalloc(inlen, GFP_KERNEL);
5307 if (!in)
5308 return -ENOMEM;
5309
5310 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
5311
5312 curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
5313 wq_attr->curr_wq_state : wq->state;
5314 wq_state = (wq_attr_mask & IB_WQ_STATE) ?
5315 wq_attr->wq_state : curr_wq_state;
5316 if (curr_wq_state == IB_WQS_ERR)
5317 curr_wq_state = MLX5_RQC_STATE_ERR;
5318 if (wq_state == IB_WQS_ERR)
5319 wq_state = MLX5_RQC_STATE_ERR;
5320 MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
5321 MLX5_SET(modify_rq_in, in, uid, to_mpd(wq->pd)->uid);
5322 MLX5_SET(rqc, rqc, state, wq_state);
5323
5324 if (wq_attr_mask & IB_WQ_FLAGS) {
5325 if (wq_attr->flags_mask & IB_WQ_FLAGS_CVLAN_STRIPPING) {
5326 if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
5327 MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
5328 mlx5_ib_dbg(dev, "VLAN offloads are not "
5329 "supported\n");
5330 err = -EOPNOTSUPP;
5331 goto out;
5332 }
5333 MLX5_SET64(modify_rq_in, in, modify_bitmask,
5334 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD);
5335 MLX5_SET(rqc, rqc, vsd,
5336 (wq_attr->flags & IB_WQ_FLAGS_CVLAN_STRIPPING) ? 0 : 1);
5337 }
5338
5339 if (wq_attr->flags_mask & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
5340 mlx5_ib_dbg(dev, "Modifying scatter end padding is not supported\n");
5341 err = -EOPNOTSUPP;
5342 goto out;
5343 }
5344 }
5345
5346 if (curr_wq_state == IB_WQS_RESET && wq_state == IB_WQS_RDY) {
5347 u16 set_id;
5348
5349 set_id = mlx5_ib_get_counters_id(dev, 0);
5350 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
5351 MLX5_SET64(modify_rq_in, in, modify_bitmask,
5352 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
5353 MLX5_SET(rqc, rqc, counter_set_id, set_id);
5354 } else
5355 dev_info_once(
5356 &dev->ib_dev.dev,
5357 "Receive WQ counters are not supported on current FW\n");
5358 }
5359
5360 err = mlx5_core_modify_rq(dev->mdev, rwq->core_qp.qpn, in);
5361 if (!err)
5362 rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
5363
5364 out:
5365 kvfree(in);
5366 return err;
5367 }
5368
5369 struct mlx5_ib_drain_cqe {
5370 struct ib_cqe cqe;
5371 struct completion done;
5372 };
5373
mlx5_ib_drain_qp_done(struct ib_cq * cq,struct ib_wc * wc)5374 static void mlx5_ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc)
5375 {
5376 struct mlx5_ib_drain_cqe *cqe = container_of(wc->wr_cqe,
5377 struct mlx5_ib_drain_cqe,
5378 cqe);
5379
5380 complete(&cqe->done);
5381 }
5382
5383 /* This function returns only once the drained WR was completed */
handle_drain_completion(struct ib_cq * cq,struct mlx5_ib_drain_cqe * sdrain,struct mlx5_ib_dev * dev)5384 static void handle_drain_completion(struct ib_cq *cq,
5385 struct mlx5_ib_drain_cqe *sdrain,
5386 struct mlx5_ib_dev *dev)
5387 {
5388 struct mlx5_core_dev *mdev = dev->mdev;
5389
5390 if (cq->poll_ctx == IB_POLL_DIRECT) {
5391 while (wait_for_completion_timeout(&sdrain->done, HZ / 10) <= 0)
5392 ib_process_cq_direct(cq, -1);
5393 return;
5394 }
5395
5396 if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
5397 struct mlx5_ib_cq *mcq = to_mcq(cq);
5398 bool triggered = false;
5399 unsigned long flags;
5400
5401 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
5402 /* Make sure that the CQ handler won't run if wasn't run yet */
5403 if (!mcq->mcq.reset_notify_added)
5404 mcq->mcq.reset_notify_added = 1;
5405 else
5406 triggered = true;
5407 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
5408
5409 if (triggered) {
5410 /* Wait for any scheduled/running task to be ended */
5411 switch (cq->poll_ctx) {
5412 case IB_POLL_SOFTIRQ:
5413 irq_poll_disable(&cq->iop);
5414 irq_poll_enable(&cq->iop);
5415 break;
5416 case IB_POLL_WORKQUEUE:
5417 cancel_work_sync(&cq->work);
5418 break;
5419 default:
5420 WARN_ON_ONCE(1);
5421 }
5422 }
5423
5424 /* Run the CQ handler - this makes sure that the drain WR will
5425 * be processed if wasn't processed yet.
5426 */
5427 mcq->mcq.comp(&mcq->mcq, NULL);
5428 }
5429
5430 wait_for_completion(&sdrain->done);
5431 }
5432
mlx5_ib_drain_sq(struct ib_qp * qp)5433 void mlx5_ib_drain_sq(struct ib_qp *qp)
5434 {
5435 struct ib_cq *cq = qp->send_cq;
5436 struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
5437 struct mlx5_ib_drain_cqe sdrain;
5438 const struct ib_send_wr *bad_swr;
5439 struct ib_rdma_wr swr = {
5440 .wr = {
5441 .next = NULL,
5442 { .wr_cqe = &sdrain.cqe, },
5443 .opcode = IB_WR_RDMA_WRITE,
5444 },
5445 };
5446 int ret;
5447 struct mlx5_ib_dev *dev = to_mdev(qp->device);
5448 struct mlx5_core_dev *mdev = dev->mdev;
5449
5450 ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
5451 if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
5452 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
5453 return;
5454 }
5455
5456 sdrain.cqe.done = mlx5_ib_drain_qp_done;
5457 init_completion(&sdrain.done);
5458
5459 ret = mlx5_ib_post_send_drain(qp, &swr.wr, &bad_swr);
5460 if (ret) {
5461 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
5462 return;
5463 }
5464
5465 handle_drain_completion(cq, &sdrain, dev);
5466 }
5467
mlx5_ib_drain_rq(struct ib_qp * qp)5468 void mlx5_ib_drain_rq(struct ib_qp *qp)
5469 {
5470 struct ib_cq *cq = qp->recv_cq;
5471 struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
5472 struct mlx5_ib_drain_cqe rdrain;
5473 struct ib_recv_wr rwr = {};
5474 const struct ib_recv_wr *bad_rwr;
5475 int ret;
5476 struct mlx5_ib_dev *dev = to_mdev(qp->device);
5477 struct mlx5_core_dev *mdev = dev->mdev;
5478
5479 ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
5480 if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
5481 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
5482 return;
5483 }
5484
5485 rwr.wr_cqe = &rdrain.cqe;
5486 rdrain.cqe.done = mlx5_ib_drain_qp_done;
5487 init_completion(&rdrain.done);
5488
5489 ret = mlx5_ib_post_recv_drain(qp, &rwr, &bad_rwr);
5490 if (ret) {
5491 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
5492 return;
5493 }
5494
5495 handle_drain_completion(cq, &rdrain, dev);
5496 }
5497
5498 /*
5499 * Bind a qp to a counter. If @counter is NULL then bind the qp to
5500 * the default counter
5501 */
mlx5_ib_qp_set_counter(struct ib_qp * qp,struct rdma_counter * counter)5502 int mlx5_ib_qp_set_counter(struct ib_qp *qp, struct rdma_counter *counter)
5503 {
5504 struct mlx5_ib_dev *dev = to_mdev(qp->device);
5505 struct mlx5_ib_qp *mqp = to_mqp(qp);
5506 int err = 0;
5507
5508 mutex_lock(&mqp->mutex);
5509 if (mqp->state == IB_QPS_RESET) {
5510 qp->counter = counter;
5511 goto out;
5512 }
5513
5514 if (!MLX5_CAP_GEN(dev->mdev, rts2rts_qp_counters_set_id)) {
5515 err = -EOPNOTSUPP;
5516 goto out;
5517 }
5518
5519 if (mqp->state == IB_QPS_RTS) {
5520 err = __mlx5_ib_qp_set_counter(qp, counter);
5521 if (!err)
5522 qp->counter = counter;
5523
5524 goto out;
5525 }
5526
5527 mqp->counter_pending = 1;
5528 qp->counter = counter;
5529
5530 out:
5531 mutex_unlock(&mqp->mutex);
5532 return err;
5533 }
5534