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IB/rxe: Add port protocol stats
[mirror_ubuntu-bionic-kernel.git] / drivers / infiniband / sw / rxe / rxe_qp.c
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8700e3e7
MS		 1/*
2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#include <linux/skbuff.h>
35#include <linux/delay.h>
36#include <linux/sched.h>
37
38#include "rxe.h"
39#include "rxe_loc.h"
40#include "rxe_queue.h"
41#include "rxe_task.h"
42
43char *rxe_qp_state_name[] = {
44 [QP_STATE_RESET] = "RESET",
45 [QP_STATE_INIT] = "INIT",
46 [QP_STATE_READY] = "READY",
47 [QP_STATE_DRAIN] = "DRAIN",
48 [QP_STATE_DRAINED] = "DRAINED",
49 [QP_STATE_ERROR] = "ERROR",
50};
51
52static int rxe_qp_chk_cap(struct rxe_dev *rxe, struct ib_qp_cap *cap,
53 int has_srq)
54{
55 if (cap->max_send_wr > rxe->attr.max_qp_wr) {
56 pr_warn("invalid send wr = %d > %d\n",
57 cap->max_send_wr, rxe->attr.max_qp_wr);
58 goto err1;
59 }
60
61 if (cap->max_send_sge > rxe->attr.max_sge) {
62 pr_warn("invalid send sge = %d > %d\n",
63 cap->max_send_sge, rxe->attr.max_sge);
64 goto err1;
65 }
66
67 if (!has_srq) {
68 if (cap->max_recv_wr > rxe->attr.max_qp_wr) {
69 pr_warn("invalid recv wr = %d > %d\n",
70 cap->max_recv_wr, rxe->attr.max_qp_wr);
71 goto err1;
72 }
73
74 if (cap->max_recv_sge > rxe->attr.max_sge) {
75 pr_warn("invalid recv sge = %d > %d\n",
76 cap->max_recv_sge, rxe->attr.max_sge);
77 goto err1;
78 }
79 }
80
81 if (cap->max_inline_data > rxe->max_inline_data) {
82 pr_warn("invalid max inline data = %d > %d\n",
83 cap->max_inline_data, rxe->max_inline_data);
84 goto err1;
85 }
86
87 return 0;
88
89err1:
90 return -EINVAL;
91}
92
93int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init)
94{
95 struct ib_qp_cap *cap = &init->cap;
96 struct rxe_port *port;
97 int port_num = init->port_num;
98
99 if (!init->recv_cq || !init->send_cq) {
100 pr_warn("missing cq\n");
101 goto err1;
102 }
103
104 if (rxe_qp_chk_cap(rxe, cap, !!init->srq))
105 goto err1;
106
107 if (init->qp_type == IB_QPT_SMI || init->qp_type == IB_QPT_GSI) {
108 if (port_num != 1) {
109 pr_warn("invalid port = %d\n", port_num);
110 goto err1;
111 }
112
113 port = &rxe->port;
114
115 if (init->qp_type == IB_QPT_SMI && port->qp_smi_index) {
116 pr_warn("SMI QP exists for port %d\n", port_num);
117 goto err1;
118 }
119
120 if (init->qp_type == IB_QPT_GSI && port->qp_gsi_index) {
121 pr_warn("GSI QP exists for port %d\n", port_num);
122 goto err1;
123 }
124 }
125
126 return 0;
127
128err1:
129 return -EINVAL;
130}
131
132static int alloc_rd_atomic_resources(struct rxe_qp *qp, unsigned int n)
133{
134 qp->resp.res_head = 0;
135 qp->resp.res_tail = 0;
136 qp->resp.resources = kcalloc(n, sizeof(struct resp_res), GFP_KERNEL);
137
138 if (!qp->resp.resources)
139 return -ENOMEM;
140
141 return 0;
142}
143
144static void free_rd_atomic_resources(struct rxe_qp *qp)
145{
146 if (qp->resp.resources) {
147 int i;
148
b6bbee0d 149 for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) {
8700e3e7
MS		 150 struct resp_res *res = &qp->resp.resources[i];
151
152 free_rd_atomic_resource(qp, res);
153 }
154 kfree(qp->resp.resources);
155 qp->resp.resources = NULL;
156 }
157}
158
159void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res)
160{
161 if (res->type == RXE_ATOMIC_MASK) {
162 rxe_drop_ref(qp);
163 kfree_skb(res->atomic.skb);
164 } else if (res->type == RXE_READ_MASK) {
165 if (res->read.mr)
166 rxe_drop_ref(res->read.mr);
167 }
168 res->type = 0;
169}
170
171static void cleanup_rd_atomic_resources(struct rxe_qp *qp)
172{
173 int i;
174 struct resp_res *res;
175
176 if (qp->resp.resources) {
b6bbee0d 177 for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) {
8700e3e7
MS		 178 res = &qp->resp.resources[i];
179 free_rd_atomic_resource(qp, res);
180 }
181 }
182}
183
184static void rxe_qp_init_misc(struct rxe_dev *rxe, struct rxe_qp *qp,
185 struct ib_qp_init_attr *init)
186{
187 struct rxe_port *port;
188 u32 qpn;
189
190 qp->sq_sig_type = init->sq_sig_type;
191 qp->attr.path_mtu = 1;
192 qp->mtu = ib_mtu_enum_to_int(qp->attr.path_mtu);
193
194 qpn = qp->pelem.index;
195 port = &rxe->port;
196
197 switch (init->qp_type) {
198 case IB_QPT_SMI:
199 qp->ibqp.qp_num = 0;
200 port->qp_smi_index = qpn;
201 qp->attr.port_num = init->port_num;
202 break;
203
204 case IB_QPT_GSI:
205 qp->ibqp.qp_num = 1;
206 port->qp_gsi_index = qpn;
207 qp->attr.port_num = init->port_num;
208 break;
209
210 default:
211 qp->ibqp.qp_num = qpn;
212 break;
213 }
214
215 INIT_LIST_HEAD(&qp->grp_list);
216
217 skb_queue_head_init(&qp->send_pkts);
218
219 spin_lock_init(&qp->grp_lock);
220 spin_lock_init(&qp->state_lock);
221
222 atomic_set(&qp->ssn, 0);
223 atomic_set(&qp->skb_out, 0);
224}
225
226static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp,
227 struct ib_qp_init_attr *init,
228 struct ib_ucontext *context, struct ib_udata *udata)
229{
230 int err;
231 int wqe_size;
232
233 err = sock_create_kern(&init_net, AF_INET, SOCK_DGRAM, 0, &qp->sk);
234 if (err < 0)
235 return err;
236 qp->sk->sk->sk_user_data = qp;
237
238 qp->sq.max_wr = init->cap.max_send_wr;
239 qp->sq.max_sge = init->cap.max_send_sge;
240 qp->sq.max_inline = init->cap.max_inline_data;
241
242 wqe_size = max_t(int, sizeof(struct rxe_send_wqe) +
243 qp->sq.max_sge * sizeof(struct ib_sge),
244 sizeof(struct rxe_send_wqe) +
245 qp->sq.max_inline);
246
247 qp->sq.queue = rxe_queue_init(rxe,
248 &qp->sq.max_wr,
249 wqe_size);
250 if (!qp->sq.queue)
251 return -ENOMEM;
252
253 err = do_mmap_info(rxe, udata, true,
254 context, qp->sq.queue->buf,
255 qp->sq.queue->buf_size, &qp->sq.queue->ip);
256
257 if (err) {
258 kvfree(qp->sq.queue->buf);
259 kfree(qp->sq.queue);
260 return err;
261 }
262
263 qp->req.wqe_index = producer_index(qp->sq.queue);
264 qp->req.state = QP_STATE_RESET;
265 qp->req.opcode = -1;
266 qp->comp.opcode = -1;
267
268 spin_lock_init(&qp->sq.sq_lock);
269 skb_queue_head_init(&qp->req_pkts);
270
271 rxe_init_task(rxe, &qp->req.task, qp,
272 rxe_requester, "req");
273 rxe_init_task(rxe, &qp->comp.task, qp,
274 rxe_completer, "comp");
275
8d8a4733
WY		 276 setup_timer(&qp->rnr_nak_timer, rnr_nak_timer, (unsigned long)qp);
277 setup_timer(&qp->retrans_timer, retransmit_timer, (unsigned long)qp);
8700e3e7
MS		 278 qp->qp_timeout_jiffies = 0; /* Can't be set for UD/UC in modify_qp */
279
280 return 0;
281}
282
283static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp,
284 struct ib_qp_init_attr *init,
285 struct ib_ucontext *context, struct ib_udata *udata)
286{
287 int err;
288 int wqe_size;
289
290 if (!qp->srq) {
291 qp->rq.max_wr = init->cap.max_recv_wr;
292 qp->rq.max_sge = init->cap.max_recv_sge;
293
294 wqe_size = rcv_wqe_size(qp->rq.max_sge);
295
e404f945
PP		 296 pr_debug("qp#%d max_wr = %d, max_sge = %d, wqe_size = %d\n",
297 qp_num(qp), qp->rq.max_wr, qp->rq.max_sge, wqe_size);
8700e3e7
MS		 298
299 qp->rq.queue = rxe_queue_init(rxe,
300 &qp->rq.max_wr,
301 wqe_size);
302 if (!qp->rq.queue)
303 return -ENOMEM;
304
305 err = do_mmap_info(rxe, udata, false, context,
306 qp->rq.queue->buf,
307 qp->rq.queue->buf_size,
308 &qp->rq.queue->ip);
309 if (err) {
310 kvfree(qp->rq.queue->buf);
311 kfree(qp->rq.queue);
312 return err;
313 }
314 }
315
316 spin_lock_init(&qp->rq.producer_lock);
317 spin_lock_init(&qp->rq.consumer_lock);
318
319 skb_queue_head_init(&qp->resp_pkts);
320
321 rxe_init_task(rxe, &qp->resp.task, qp,
322 rxe_responder, "resp");
323
324 qp->resp.opcode = OPCODE_NONE;
325 qp->resp.msn = 0;
326 qp->resp.state = QP_STATE_RESET;
327
328 return 0;
329}
330
331/* called by the create qp verb */
332int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
333 struct ib_qp_init_attr *init, struct ib_udata *udata,
334 struct ib_pd *ibpd)
335{
336 int err;
337 struct rxe_cq *rcq = to_rcq(init->recv_cq);
338 struct rxe_cq *scq = to_rcq(init->send_cq);
339 struct rxe_srq *srq = init->srq ? to_rsrq(init->srq) : NULL;
340 struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
341
342 rxe_add_ref(pd);
343 rxe_add_ref(rcq);
344 rxe_add_ref(scq);
345 if (srq)
346 rxe_add_ref(srq);
347
348 qp->pd = pd;
349 qp->rcq = rcq;
350 qp->scq = scq;
351 qp->srq = srq;
352
353 rxe_qp_init_misc(rxe, qp, init);
354
355 err = rxe_qp_init_req(rxe, qp, init, context, udata);
356 if (err)
357 goto err1;
358
359 err = rxe_qp_init_resp(rxe, qp, init, context, udata);
360 if (err)
361 goto err2;
362
363 qp->attr.qp_state = IB_QPS_RESET;
364 qp->valid = 1;
365
366 return 0;
367
368err2:
369 rxe_queue_cleanup(qp->sq.queue);
370err1:
371 if (srq)
372 rxe_drop_ref(srq);
373 rxe_drop_ref(scq);
374 rxe_drop_ref(rcq);
375 rxe_drop_ref(pd);
376
377 return err;
378}
379
380/* called by the query qp verb */
381int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init)
382{
383 init->event_handler = qp->ibqp.event_handler;
384 init->qp_context = qp->ibqp.qp_context;
385 init->send_cq = qp->ibqp.send_cq;
386 init->recv_cq = qp->ibqp.recv_cq;
387 init->srq = qp->ibqp.srq;
388
389 init->cap.max_send_wr = qp->sq.max_wr;
390 init->cap.max_send_sge = qp->sq.max_sge;
391 init->cap.max_inline_data = qp->sq.max_inline;
392
393 if (!qp->srq) {
394 init->cap.max_recv_wr = qp->rq.max_wr;
395 init->cap.max_recv_sge = qp->rq.max_sge;
396 }
397
398 init->sq_sig_type = qp->sq_sig_type;
399
400 init->qp_type = qp->ibqp.qp_type;
401 init->port_num = 1;
402
403 return 0;
404}
405
406/* called by the modify qp verb, this routine checks all the parameters before
407 * making any changes
408 */
409int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
410 struct ib_qp_attr *attr, int mask)
411{
412 enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ?
413 attr->cur_qp_state : qp->attr.qp_state;
414 enum ib_qp_state new_state = (mask & IB_QP_STATE) ?
415 attr->qp_state : cur_state;
416
417 if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask,
418 IB_LINK_LAYER_ETHERNET)) {
419 pr_warn("invalid mask or state for qp\n");
420 goto err1;
421 }
422
423 if (mask & IB_QP_STATE) {
424 if (cur_state == IB_QPS_SQD) {
425 if (qp->req.state == QP_STATE_DRAIN &&
426 new_state != IB_QPS_ERR)
427 goto err1;
428 }
429 }
430
431 if (mask & IB_QP_PORT) {
432 if (attr->port_num != 1) {
433 pr_warn("invalid port %d\n", attr->port_num);
434 goto err1;
435 }
436 }
437
438 if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap, !!qp->srq))
439 goto err1;
440
441 if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr))
442 goto err1;
443
444 if (mask & IB_QP_ALT_PATH) {
445 if (rxe_av_chk_attr(rxe, &attr->alt_ah_attr))
446 goto err1;
447 if (attr->alt_port_num != 1) {
448 pr_warn("invalid alt port %d\n", attr->alt_port_num);
449 goto err1;
450 }
451 if (attr->alt_timeout > 31) {
452 pr_warn("invalid QP alt timeout %d > 31\n",
453 attr->alt_timeout);
454 goto err1;
455 }
456 }
457
458 if (mask & IB_QP_PATH_MTU) {
459 struct rxe_port *port = &rxe->port;
460
461 enum ib_mtu max_mtu = port->attr.max_mtu;
462 enum ib_mtu mtu = attr->path_mtu;
463
464 if (mtu > max_mtu) {
465 pr_debug("invalid mtu (%d) > (%d)\n",
466 ib_mtu_enum_to_int(mtu),
467 ib_mtu_enum_to_int(max_mtu));
468 goto err1;
469 }
470 }
471
472 if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
473 if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) {
474 pr_warn("invalid max_rd_atomic %d > %d\n",
475 attr->max_rd_atomic,
476 rxe->attr.max_qp_rd_atom);
477 goto err1;
478 }
479 }
480
481 if (mask & IB_QP_TIMEOUT) {
482 if (attr->timeout > 31) {
483 pr_warn("invalid QP timeout %d > 31\n",
484 attr->timeout);
485 goto err1;
486 }
487 }
488
489 return 0;
490
491err1:
492 return -EINVAL;
493}
494
495/* move the qp to the reset state */
496static void rxe_qp_reset(struct rxe_qp *qp)
497{
498 /* stop tasks from running */
499 rxe_disable_task(&qp->resp.task);
500
501 /* stop request/comp */
502 if (qp->sq.queue) {
503 if (qp_type(qp) == IB_QPT_RC)
504 rxe_disable_task(&qp->comp.task);
505 rxe_disable_task(&qp->req.task);
506 }
507
508 /* move qp to the reset state */
509 qp->req.state = QP_STATE_RESET;
510 qp->resp.state = QP_STATE_RESET;
511
512 /* let state machines reset themselves drain work and packet queues
513 * etc.
514 */
515 __rxe_do_task(&qp->resp.task);
516
517 if (qp->sq.queue) {
518 __rxe_do_task(&qp->comp.task);
519 __rxe_do_task(&qp->req.task);
aa75b07b 520 rxe_queue_reset(qp->sq.queue);
8700e3e7
MS		 521 }
522
523 /* cleanup attributes */
524 atomic_set(&qp->ssn, 0);
525 qp->req.opcode = -1;
526 qp->req.need_retry = 0;
527 qp->req.noack_pkts = 0;
528 qp->resp.msn = 0;
529 qp->resp.opcode = -1;
530 qp->resp.drop_msg = 0;
531 qp->resp.goto_error = 0;
532 qp->resp.sent_psn_nak = 0;
533
534 if (qp->resp.mr) {
535 rxe_drop_ref(qp->resp.mr);
536 qp->resp.mr = NULL;
537 }
538
539 cleanup_rd_atomic_resources(qp);
540
541 /* reenable tasks */
542 rxe_enable_task(&qp->resp.task);
543
544 if (qp->sq.queue) {
545 if (qp_type(qp) == IB_QPT_RC)
546 rxe_enable_task(&qp->comp.task);
547
548 rxe_enable_task(&qp->req.task);
549 }
550}
551
552/* drain the send queue */
553static void rxe_qp_drain(struct rxe_qp *qp)
554{
555 if (qp->sq.queue) {
556 if (qp->req.state != QP_STATE_DRAINED) {
557 qp->req.state = QP_STATE_DRAIN;
558 if (qp_type(qp) == IB_QPT_RC)
559 rxe_run_task(&qp->comp.task, 1);
560 else
561 __rxe_do_task(&qp->comp.task);
562 rxe_run_task(&qp->req.task, 1);
563 }
564 }
565}
566
567/* move the qp to the error state */
568void rxe_qp_error(struct rxe_qp *qp)
569{
570 qp->req.state = QP_STATE_ERROR;
571 qp->resp.state = QP_STATE_ERROR;
6d931308 572 qp->attr.qp_state = IB_QPS_ERR;
8700e3e7
MS		 573
574 /* drain work and packet queues */
575 rxe_run_task(&qp->resp.task, 1);
576
577 if (qp_type(qp) == IB_QPT_RC)
578 rxe_run_task(&qp->comp.task, 1);
579 else
580 __rxe_do_task(&qp->comp.task);
581 rxe_run_task(&qp->req.task, 1);
582}
583
584/* called by the modify qp verb */
585int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
586 struct ib_udata *udata)
587{
588 int err;
589 struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
590 union ib_gid sgid;
591 struct ib_gid_attr sgid_attr;
592
593 if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
594 int max_rd_atomic = __roundup_pow_of_two(attr->max_rd_atomic);
595
b6bbee0d
PP		 596 qp->attr.max_rd_atomic = max_rd_atomic;
597 atomic_set(&qp->req.rd_atomic, max_rd_atomic);
598 }
599
600 if (mask & IB_QP_MAX_DEST_RD_ATOMIC) {
601 int max_dest_rd_atomic =
602 __roundup_pow_of_two(attr->max_dest_rd_atomic);
603
604 qp->attr.max_dest_rd_atomic = max_dest_rd_atomic;
605
8700e3e7
MS		 606 free_rd_atomic_resources(qp);
607
b6bbee0d 608 err = alloc_rd_atomic_resources(qp, max_dest_rd_atomic);
8700e3e7
MS		 609 if (err)
610 return err;
8700e3e7
MS		 611 }
612
613 if (mask & IB_QP_CUR_STATE)
614 qp->attr.cur_qp_state = attr->qp_state;
615
616 if (mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
617 qp->attr.en_sqd_async_notify = attr->en_sqd_async_notify;
618
619 if (mask & IB_QP_ACCESS_FLAGS)
620 qp->attr.qp_access_flags = attr->qp_access_flags;
621
622 if (mask & IB_QP_PKEY_INDEX)
623 qp->attr.pkey_index = attr->pkey_index;
624
625 if (mask & IB_QP_PORT)
626 qp->attr.port_num = attr->port_num;
627
628 if (mask & IB_QP_QKEY)
629 qp->attr.qkey = attr->qkey;
630
631 if (mask & IB_QP_AV) {
632 ib_get_cached_gid(&rxe->ib_dev, 1,
633 attr->ah_attr.grh.sgid_index, &sgid,
634 &sgid_attr);
635 rxe_av_from_attr(rxe, attr->port_num, &qp->pri_av,
636 &attr->ah_attr);
637 rxe_av_fill_ip_info(rxe, &qp->pri_av, &attr->ah_attr,
638 &sgid_attr, &sgid);
639 if (sgid_attr.ndev)
640 dev_put(sgid_attr.ndev);
641 }
642
643 if (mask & IB_QP_ALT_PATH) {
644 ib_get_cached_gid(&rxe->ib_dev, 1,
645 attr->alt_ah_attr.grh.sgid_index, &sgid,
646 &sgid_attr);
647
648 rxe_av_from_attr(rxe, attr->alt_port_num, &qp->alt_av,
649 &attr->alt_ah_attr);
650 rxe_av_fill_ip_info(rxe, &qp->alt_av, &attr->alt_ah_attr,
651 &sgid_attr, &sgid);
652 if (sgid_attr.ndev)
653 dev_put(sgid_attr.ndev);
654
655 qp->attr.alt_port_num = attr->alt_port_num;
656 qp->attr.alt_pkey_index = attr->alt_pkey_index;
657 qp->attr.alt_timeout = attr->alt_timeout;
658 }
659
660 if (mask & IB_QP_PATH_MTU) {
661 qp->attr.path_mtu = attr->path_mtu;
662 qp->mtu = ib_mtu_enum_to_int(attr->path_mtu);
663 }
664
665 if (mask & IB_QP_TIMEOUT) {
666 qp->attr.timeout = attr->timeout;
667 if (attr->timeout == 0) {
668 qp->qp_timeout_jiffies = 0;
669 } else {
670 /* According to the spec, timeout = 4.096 * 2 ^ attr->timeout [us] */
671 int j = nsecs_to_jiffies(4096ULL << attr->timeout);
672
673 qp->qp_timeout_jiffies = j ? j : 1;
674 }
675 }
676
677 if (mask & IB_QP_RETRY_CNT) {
678 qp->attr.retry_cnt = attr->retry_cnt;
679 qp->comp.retry_cnt = attr->retry_cnt;
e404f945
PP		 680 pr_debug("qp#%d set retry count = %d\n", qp_num(qp),
681 attr->retry_cnt);
8700e3e7
MS		 682 }
683
684 if (mask & IB_QP_RNR_RETRY) {
685 qp->attr.rnr_retry = attr->rnr_retry;
686 qp->comp.rnr_retry = attr->rnr_retry;
e404f945
PP		 687 pr_debug("qp#%d set rnr retry count = %d\n", qp_num(qp),
688 attr->rnr_retry);
8700e3e7
MS		 689 }
690
691 if (mask & IB_QP_RQ_PSN) {
692 qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK);
693 qp->resp.psn = qp->attr.rq_psn;
e404f945
PP		 694 pr_debug("qp#%d set resp psn = 0x%x\n", qp_num(qp),
695 qp->resp.psn);
8700e3e7
MS		 696 }
697
698 if (mask & IB_QP_MIN_RNR_TIMER) {
699 qp->attr.min_rnr_timer = attr->min_rnr_timer;
e404f945 700 pr_debug("qp#%d set min rnr timer = 0x%x\n", qp_num(qp),
8700e3e7
MS		 701 attr->min_rnr_timer);
702 }
703
704 if (mask & IB_QP_SQ_PSN) {
705 qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK);
706 qp->req.psn = qp->attr.sq_psn;
707 qp->comp.psn = qp->attr.sq_psn;
e404f945 708 pr_debug("qp#%d set req psn = 0x%x\n", qp_num(qp), qp->req.psn);
8700e3e7
MS		 709 }
710
8700e3e7
MS		 711 if (mask & IB_QP_PATH_MIG_STATE)
712 qp->attr.path_mig_state = attr->path_mig_state;
713
714 if (mask & IB_QP_DEST_QPN)
715 qp->attr.dest_qp_num = attr->dest_qp_num;
716
717 if (mask & IB_QP_STATE) {
718 qp->attr.qp_state = attr->qp_state;
719
720 switch (attr->qp_state) {
721 case IB_QPS_RESET:
e404f945 722 pr_debug("qp#%d state -> RESET\n", qp_num(qp));
8700e3e7
MS		 723 rxe_qp_reset(qp);
724 break;
725
726 case IB_QPS_INIT:
e404f945 727 pr_debug("qp#%d state -> INIT\n", qp_num(qp));
8700e3e7
MS		 728 qp->req.state = QP_STATE_INIT;
729 qp->resp.state = QP_STATE_INIT;
730 break;
731
732 case IB_QPS_RTR:
e404f945 733 pr_debug("qp#%d state -> RTR\n", qp_num(qp));
8700e3e7
MS		 734 qp->resp.state = QP_STATE_READY;
735 break;
736
737 case IB_QPS_RTS:
e404f945 738 pr_debug("qp#%d state -> RTS\n", qp_num(qp));
8700e3e7
MS		 739 qp->req.state = QP_STATE_READY;
740 break;
741
742 case IB_QPS_SQD:
e404f945 743 pr_debug("qp#%d state -> SQD\n", qp_num(qp));
8700e3e7
MS		 744 rxe_qp_drain(qp);
745 break;
746
747 case IB_QPS_SQE:
e404f945 748 pr_warn("qp#%d state -> SQE !!?\n", qp_num(qp));
8700e3e7
MS		 749 /* Not possible from modify_qp. */
750 break;
751
752 case IB_QPS_ERR:
e404f945 753 pr_debug("qp#%d state -> ERR\n", qp_num(qp));
8700e3e7
MS		 754 rxe_qp_error(qp);
755 break;
756 }
757 }
758
759 return 0;
760}
761
762/* called by the query qp verb */
763int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask)
764{
765 struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
766
767 *attr = qp->attr;
768
769 attr->rq_psn = qp->resp.psn;
770 attr->sq_psn = qp->req.psn;
771
772 attr->cap.max_send_wr = qp->sq.max_wr;
773 attr->cap.max_send_sge = qp->sq.max_sge;
774 attr->cap.max_inline_data = qp->sq.max_inline;
775
776 if (!qp->srq) {
777 attr->cap.max_recv_wr = qp->rq.max_wr;
778 attr->cap.max_recv_sge = qp->rq.max_sge;
779 }
780
781 rxe_av_to_attr(rxe, &qp->pri_av, &attr->ah_attr);
782 rxe_av_to_attr(rxe, &qp->alt_av, &attr->alt_ah_attr);
783
784 if (qp->req.state == QP_STATE_DRAIN) {
785 attr->sq_draining = 1;
786 /* applications that get this state
787 * typically spin on it. yield the
788 * processor
789 */
790 cond_resched();
791 } else {
792 attr->sq_draining = 0;
793 }
794
795 pr_debug("attr->sq_draining = %d\n", attr->sq_draining);
796
797 return 0;
798}
799
800/* called by the destroy qp verb */
801void rxe_qp_destroy(struct rxe_qp *qp)
802{
803 qp->valid = 0;
804 qp->qp_timeout_jiffies = 0;
805 rxe_cleanup_task(&qp->resp.task);
806
807 del_timer_sync(&qp->retrans_timer);
808 del_timer_sync(&qp->rnr_nak_timer);
809
810 rxe_cleanup_task(&qp->req.task);
2d4b21e0 811 rxe_cleanup_task(&qp->comp.task);
8700e3e7
MS		 812
813 /* flush out any receive wr's or pending requests */
814 __rxe_do_task(&qp->req.task);
815 if (qp->sq.queue) {
816 __rxe_do_task(&qp->comp.task);
817 __rxe_do_task(&qp->req.task);
818 }
819}
820
821/* called when the last reference to the qp is dropped */
32404fb7 822void rxe_qp_cleanup(struct rxe_pool_entry *arg)
8700e3e7 823{
32404fb7 824 struct rxe_qp *qp = container_of(arg, typeof(*qp), pelem);
8700e3e7
MS		 825
826 rxe_drop_all_mcast_groups(qp);
827
828 if (qp->sq.queue)
829 rxe_queue_cleanup(qp->sq.queue);
830
831 if (qp->srq)
832 rxe_drop_ref(qp->srq);
833
834 if (qp->rq.queue)
835 rxe_queue_cleanup(qp->rq.queue);
836
837 if (qp->scq)
838 rxe_drop_ref(qp->scq);
839 if (qp->rcq)
840 rxe_drop_ref(qp->rcq);
841 if (qp->pd)
842 rxe_drop_ref(qp->pd);
843
844 if (qp->resp.mr) {
845 rxe_drop_ref(qp->resp.mr);
846 qp->resp.mr = NULL;
847 }
848
849 free_rd_atomic_resources(qp);
850
851 kernel_sock_shutdown(qp->sk, SHUT_RDWR);
e259934d 852 sock_release(qp->sk);
8700e3e7 853}
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