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6
7#include <linux/skbuff.h>
8#include <linux/delay.h>
9#include <linux/sched.h>
10#include <linux/vmalloc.h>
11#include <rdma/uverbs_ioctl.h>
12
13#include "rxe.h"
14#include "rxe_loc.h"
15#include "rxe_queue.h"
16#include "rxe_task.h"
17
18static int rxe_qp_chk_cap(struct rxe_dev *rxe, struct ib_qp_cap *cap,
19 int has_srq)
20{
21 if (cap->max_send_wr > rxe->attr.max_qp_wr) {
22 pr_warn("invalid send wr = %d > %d\n",
23 cap->max_send_wr, rxe->attr.max_qp_wr);
24 goto err1;
25 }
26
27 if (cap->max_send_sge > rxe->attr.max_send_sge) {
28 pr_warn("invalid send sge = %d > %d\n",
29 cap->max_send_sge, rxe->attr.max_send_sge);
30 goto err1;
31 }
32
33 if (!has_srq) {
34 if (cap->max_recv_wr > rxe->attr.max_qp_wr) {
35 pr_warn("invalid recv wr = %d > %d\n",
36 cap->max_recv_wr, rxe->attr.max_qp_wr);
37 goto err1;
38 }
39
40 if (cap->max_recv_sge > rxe->attr.max_recv_sge) {
41 pr_warn("invalid recv sge = %d > %d\n",
42 cap->max_recv_sge, rxe->attr.max_recv_sge);
43 goto err1;
44 }
45 }
46
47 if (cap->max_inline_data > rxe->max_inline_data) {
48 pr_warn("invalid max inline data = %d > %d\n",
49 cap->max_inline_data, rxe->max_inline_data);
50 goto err1;
51 }
52
53 return 0;
54
55err1:
56 return -EINVAL;
57}
58
59int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init)
60{
61 struct ib_qp_cap *cap = &init->cap;
62 struct rxe_port *port;
63 int port_num = init->port_num;
64
65 switch (init->qp_type) {
66 case IB_QPT_SMI:
67 case IB_QPT_GSI:
68 case IB_QPT_RC:
69 case IB_QPT_UC:
70 case IB_QPT_UD:
71 break;
72 default:
73 return -EOPNOTSUPP;
74 }
75
76 if (!init->recv_cq || !init->send_cq) {
77 pr_warn("missing cq\n");
78 goto err1;
79 }
80
81 if (rxe_qp_chk_cap(rxe, cap, !!init->srq))
82 goto err1;
83
84 if (init->qp_type == IB_QPT_SMI || init->qp_type == IB_QPT_GSI) {
85 if (!rdma_is_port_valid(&rxe->ib_dev, port_num)) {
86 pr_warn("invalid port = %d\n", port_num);
87 goto err1;
88 }
89
90 port = &rxe->port;
91
92 if (init->qp_type == IB_QPT_SMI && port->qp_smi_index) {
93 pr_warn("SMI QP exists for port %d\n", port_num);
94 goto err1;
95 }
96
97 if (init->qp_type == IB_QPT_GSI && port->qp_gsi_index) {
98 pr_warn("GSI QP exists for port %d\n", port_num);
99 goto err1;
100 }
101 }
102
103 return 0;
104
105err1:
106 return -EINVAL;
107}
108
109static int alloc_rd_atomic_resources(struct rxe_qp *qp, unsigned int n)
110{
111 qp->resp.res_head = 0;
112 qp->resp.res_tail = 0;
113 qp->resp.resources = kcalloc(n, sizeof(struct resp_res), GFP_KERNEL);
114
115 if (!qp->resp.resources)
116 return -ENOMEM;
117
118 return 0;
119}
120
121static void free_rd_atomic_resources(struct rxe_qp *qp)
122{
123 if (qp->resp.resources) {
124 int i;
125
126 for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) {
127 struct resp_res *res = &qp->resp.resources[i];
128
129 free_rd_atomic_resource(qp, res);
130 }
131 kfree(qp->resp.resources);
132 qp->resp.resources = NULL;
133 }
134}
135
136void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res)
137{
138 if (res->type == RXE_ATOMIC_MASK) {
139 kfree_skb(res->atomic.skb);
140 } else if (res->type == RXE_READ_MASK) {
141 if (res->read.mr)
142 rxe_drop_ref(res->read.mr);
143 }
144 res->type = 0;
145}
146
147static void cleanup_rd_atomic_resources(struct rxe_qp *qp)
148{
149 int i;
150 struct resp_res *res;
151
152 if (qp->resp.resources) {
153 for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) {
154 res = &qp->resp.resources[i];
155 free_rd_atomic_resource(qp, res);
156 }
157 }
158}
159
160static void rxe_qp_init_misc(struct rxe_dev *rxe, struct rxe_qp *qp,
161 struct ib_qp_init_attr *init)
162{
163 struct rxe_port *port;
164 u32 qpn;
165
166 qp->sq_sig_type = init->sq_sig_type;
167 qp->attr.path_mtu = 1;
168 qp->mtu = ib_mtu_enum_to_int(qp->attr.path_mtu);
169
170 qpn = qp->pelem.index;
171 port = &rxe->port;
172
173 switch (init->qp_type) {
174 case IB_QPT_SMI:
175 qp->ibqp.qp_num = 0;
176 port->qp_smi_index = qpn;
177 qp->attr.port_num = init->port_num;
178 break;
179
180 case IB_QPT_GSI:
181 qp->ibqp.qp_num = 1;
182 port->qp_gsi_index = qpn;
183 qp->attr.port_num = init->port_num;
184 break;
185
186 default:
187 qp->ibqp.qp_num = qpn;
188 break;
189 }
190
191 INIT_LIST_HEAD(&qp->grp_list);
192
193 skb_queue_head_init(&qp->send_pkts);
194
195 spin_lock_init(&qp->grp_lock);
196 spin_lock_init(&qp->state_lock);
197
198 atomic_set(&qp->ssn, 0);
199 atomic_set(&qp->skb_out, 0);
200}
201
202static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp,
203 struct ib_qp_init_attr *init, struct ib_udata *udata,
204 struct rxe_create_qp_resp __user *uresp)
205{
206 int err;
207 int wqe_size;
208 enum queue_type type;
209
210 err = sock_create_kern(&init_net, AF_INET, SOCK_DGRAM, 0, &qp->sk);
211 if (err < 0)
212 return err;
213 qp->sk->sk->sk_user_data = qp;
214
215
216
217
218
219
220
221
222 qp->src_port = RXE_ROCE_V2_SPORT +
223 (hash_32_generic(qp_num(qp), 14) & 0x3fff);
224 qp->sq.max_wr = init->cap.max_send_wr;
225
226
227 wqe_size = max_t(int, init->cap.max_send_sge * sizeof(struct ib_sge),
228 init->cap.max_inline_data);
229 qp->sq.max_sge = init->cap.max_send_sge =
230 wqe_size / sizeof(struct ib_sge);
231 qp->sq.max_inline = init->cap.max_inline_data = wqe_size;
232 wqe_size += sizeof(struct rxe_send_wqe);
233
234 type = uresp ? QUEUE_TYPE_FROM_USER : QUEUE_TYPE_KERNEL;
235 qp->sq.queue = rxe_queue_init(rxe, &qp->sq.max_wr,
236 wqe_size, type);
237 if (!qp->sq.queue)
238 return -ENOMEM;
239
240 err = do_mmap_info(rxe, uresp ? &uresp->sq_mi : NULL, udata,
241 qp->sq.queue->buf, qp->sq.queue->buf_size,
242 &qp->sq.queue->ip);
243
244 if (err) {
245 vfree(qp->sq.queue->buf);
246 kfree(qp->sq.queue);
247 qp->sq.queue = NULL;
248 return err;
249 }
250
251 if (qp->is_user)
252 qp->req.wqe_index = producer_index(qp->sq.queue,
253 QUEUE_TYPE_FROM_USER);
254 else
255 qp->req.wqe_index = producer_index(qp->sq.queue,
256 QUEUE_TYPE_KERNEL);
257
258 qp->req.state = QP_STATE_RESET;
259 qp->req.opcode = -1;
260 qp->comp.opcode = -1;
261
262 spin_lock_init(&qp->sq.sq_lock);
263 skb_queue_head_init(&qp->req_pkts);
264
265 rxe_init_task(rxe, &qp->req.task, qp,
266 rxe_requester, "req");
267 rxe_init_task(rxe, &qp->comp.task, qp,
268 rxe_completer, "comp");
269
270 qp->qp_timeout_jiffies = 0;
271 if (init->qp_type == IB_QPT_RC) {
272 timer_setup(&qp->rnr_nak_timer, rnr_nak_timer, 0);
273 timer_setup(&qp->retrans_timer, retransmit_timer, 0);
274 }
275 return 0;
276}
277
278static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp,
279 struct ib_qp_init_attr *init,
280 struct ib_udata *udata,
281 struct rxe_create_qp_resp __user *uresp)
282{
283 int err;
284 int wqe_size;
285 enum queue_type type;
286
287 if (!qp->srq) {
288 qp->rq.max_wr = init->cap.max_recv_wr;
289 qp->rq.max_sge = init->cap.max_recv_sge;
290
291 wqe_size = rcv_wqe_size(qp->rq.max_sge);
292
293 pr_debug("qp#%d max_wr = %d, max_sge = %d, wqe_size = %d\n",
294 qp_num(qp), qp->rq.max_wr, qp->rq.max_sge, wqe_size);
295
296 type = uresp ? QUEUE_TYPE_FROM_USER : QUEUE_TYPE_KERNEL;
297 qp->rq.queue = rxe_queue_init(rxe, &qp->rq.max_wr,
298 wqe_size, type);
299 if (!qp->rq.queue)
300 return -ENOMEM;
301
302 err = do_mmap_info(rxe, uresp ? &uresp->rq_mi : NULL, udata,
303 qp->rq.queue->buf, qp->rq.queue->buf_size,
304 &qp->rq.queue->ip);
305 if (err) {
306 vfree(qp->rq.queue->buf);
307 kfree(qp->rq.queue);
308 qp->rq.queue = NULL;
309 return err;
310 }
311 }
312
313 spin_lock_init(&qp->rq.producer_lock);
314 spin_lock_init(&qp->rq.consumer_lock);
315
316 qp->rq.is_user = qp->is_user;
317
318 skb_queue_head_init(&qp->resp_pkts);
319
320 rxe_init_task(rxe, &qp->resp.task, qp,
321 rxe_responder, "resp");
322
323 qp->resp.opcode = OPCODE_NONE;
324 qp->resp.msn = 0;
325 qp->resp.state = QP_STATE_RESET;
326
327 return 0;
328}
329
330
331int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
332 struct ib_qp_init_attr *init,
333 struct rxe_create_qp_resp __user *uresp,
334 struct ib_pd *ibpd,
335 struct ib_udata *udata)
336{
337 int err;
338 struct rxe_cq *rcq = to_rcq(init->recv_cq);
339 struct rxe_cq *scq = to_rcq(init->send_cq);
340 struct rxe_srq *srq = init->srq ? to_rsrq(init->srq) : 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, udata, uresp);
356 if (err)
357 goto err1;
358
359 err = rxe_qp_init_resp(rxe, qp, init, udata, uresp);
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 qp->pd = NULL;
372 qp->rcq = NULL;
373 qp->scq = NULL;
374 qp->srq = NULL;
375
376 if (srq)
377 rxe_drop_ref(srq);
378 rxe_drop_ref(scq);
379 rxe_drop_ref(rcq);
380 rxe_drop_ref(pd);
381
382 return err;
383}
384
385
386int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init)
387{
388 init->event_handler = qp->ibqp.event_handler;
389 init->qp_context = qp->ibqp.qp_context;
390 init->send_cq = qp->ibqp.send_cq;
391 init->recv_cq = qp->ibqp.recv_cq;
392 init->srq = qp->ibqp.srq;
393
394 init->cap.max_send_wr = qp->sq.max_wr;
395 init->cap.max_send_sge = qp->sq.max_sge;
396 init->cap.max_inline_data = qp->sq.max_inline;
397
398 if (!qp->srq) {
399 init->cap.max_recv_wr = qp->rq.max_wr;
400 init->cap.max_recv_sge = qp->rq.max_sge;
401 }
402
403 init->sq_sig_type = qp->sq_sig_type;
404
405 init->qp_type = qp->ibqp.qp_type;
406 init->port_num = 1;
407
408 return 0;
409}
410
411
412
413
414int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
415 struct ib_qp_attr *attr, int mask)
416{
417 enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ?
418 attr->cur_qp_state : qp->attr.qp_state;
419 enum ib_qp_state new_state = (mask & IB_QP_STATE) ?
420 attr->qp_state : cur_state;
421
422 if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask)) {
423 pr_warn("invalid mask or state for qp\n");
424 goto err1;
425 }
426
427 if (mask & IB_QP_STATE) {
428 if (cur_state == IB_QPS_SQD) {
429 if (qp->req.state == QP_STATE_DRAIN &&
430 new_state != IB_QPS_ERR)
431 goto err1;
432 }
433 }
434
435 if (mask & IB_QP_PORT) {
436 if (!rdma_is_port_valid(&rxe->ib_dev, attr->port_num)) {
437 pr_warn("invalid port %d\n", attr->port_num);
438 goto err1;
439 }
440 }
441
442 if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap, !!qp->srq))
443 goto err1;
444
445 if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr))
446 goto err1;
447
448 if (mask & IB_QP_ALT_PATH) {
449 if (rxe_av_chk_attr(rxe, &attr->alt_ah_attr))
450 goto err1;
451 if (!rdma_is_port_valid(&rxe->ib_dev, attr->alt_port_num)) {
452 pr_warn("invalid alt port %d\n", attr->alt_port_num);
453 goto err1;
454 }
455 if (attr->alt_timeout > 31) {
456 pr_warn("invalid QP alt timeout %d > 31\n",
457 attr->alt_timeout);
458 goto err1;
459 }
460 }
461
462 if (mask & IB_QP_PATH_MTU) {
463 struct rxe_port *port = &rxe->port;
464
465 enum ib_mtu max_mtu = port->attr.max_mtu;
466 enum ib_mtu mtu = attr->path_mtu;
467
468 if (mtu > max_mtu) {
469 pr_debug("invalid mtu (%d) > (%d)\n",
470 ib_mtu_enum_to_int(mtu),
471 ib_mtu_enum_to_int(max_mtu));
472 goto err1;
473 }
474 }
475
476 if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
477 if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) {
478 pr_warn("invalid max_rd_atomic %d > %d\n",
479 attr->max_rd_atomic,
480 rxe->attr.max_qp_rd_atom);
481 goto err1;
482 }
483 }
484
485 if (mask & IB_QP_TIMEOUT) {
486 if (attr->timeout > 31) {
487 pr_warn("invalid QP timeout %d > 31\n",
488 attr->timeout);
489 goto err1;
490 }
491 }
492
493 return 0;
494
495err1:
496 return -EINVAL;
497}
498
499
500static void rxe_qp_reset(struct rxe_qp *qp)
501{
502
503 rxe_disable_task(&qp->resp.task);
504
505
506 if (qp->sq.queue) {
507 if (qp_type(qp) == IB_QPT_RC)
508 rxe_disable_task(&qp->comp.task);
509 rxe_disable_task(&qp->req.task);
510 }
511
512
513 qp->req.state = QP_STATE_RESET;
514 qp->resp.state = QP_STATE_RESET;
515
516
517
518
519 __rxe_do_task(&qp->resp.task);
520
521 if (qp->sq.queue) {
522 __rxe_do_task(&qp->comp.task);
523 __rxe_do_task(&qp->req.task);
524 rxe_queue_reset(qp->sq.queue);
525 }
526
527
528 atomic_set(&qp->ssn, 0);
529 qp->req.opcode = -1;
530 qp->req.need_retry = 0;
531 qp->req.noack_pkts = 0;
532 qp->resp.msn = 0;
533 qp->resp.opcode = -1;
534 qp->resp.drop_msg = 0;
535 qp->resp.goto_error = 0;
536 qp->resp.sent_psn_nak = 0;
537
538 if (qp->resp.mr) {
539 rxe_drop_ref(qp->resp.mr);
540 qp->resp.mr = NULL;
541 }
542
543 cleanup_rd_atomic_resources(qp);
544
545
546 rxe_enable_task(&qp->resp.task);
547
548 if (qp->sq.queue) {
549 if (qp_type(qp) == IB_QPT_RC)
550 rxe_enable_task(&qp->comp.task);
551
552 rxe_enable_task(&qp->req.task);
553 }
554}
555
556
557static void rxe_qp_drain(struct rxe_qp *qp)
558{
559 if (qp->sq.queue) {
560 if (qp->req.state != QP_STATE_DRAINED) {
561 qp->req.state = QP_STATE_DRAIN;
562 if (qp_type(qp) == IB_QPT_RC)
563 rxe_run_task(&qp->comp.task, 1);
564 else
565 __rxe_do_task(&qp->comp.task);
566 rxe_run_task(&qp->req.task, 1);
567 }
568 }
569}
570
571
572void rxe_qp_error(struct rxe_qp *qp)
573{
574 qp->req.state = QP_STATE_ERROR;
575 qp->resp.state = QP_STATE_ERROR;
576 qp->attr.qp_state = IB_QPS_ERR;
577
578
579 rxe_run_task(&qp->resp.task, 1);
580
581 if (qp_type(qp) == IB_QPT_RC)
582 rxe_run_task(&qp->comp.task, 1);
583 else
584 __rxe_do_task(&qp->comp.task);
585 rxe_run_task(&qp->req.task, 1);
586}
587
588
589int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
590 struct ib_udata *udata)
591{
592 int err;
593
594 if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
595 int max_rd_atomic = attr->max_rd_atomic ?
596 roundup_pow_of_two(attr->max_rd_atomic) : 0;
597
598 qp->attr.max_rd_atomic = max_rd_atomic;
599 atomic_set(&qp->req.rd_atomic, max_rd_atomic);
600 }
601
602 if (mask & IB_QP_MAX_DEST_RD_ATOMIC) {
603 int max_dest_rd_atomic = attr->max_dest_rd_atomic ?
604 roundup_pow_of_two(attr->max_dest_rd_atomic) : 0;
605
606 qp->attr.max_dest_rd_atomic = max_dest_rd_atomic;
607
608 free_rd_atomic_resources(qp);
609
610 err = alloc_rd_atomic_resources(qp, max_dest_rd_atomic);
611 if (err)
612 return err;
613 }
614
615 if (mask & IB_QP_CUR_STATE)
616 qp->attr.cur_qp_state = attr->qp_state;
617
618 if (mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
619 qp->attr.en_sqd_async_notify = attr->en_sqd_async_notify;
620
621 if (mask & IB_QP_ACCESS_FLAGS)
622 qp->attr.qp_access_flags = attr->qp_access_flags;
623
624 if (mask & IB_QP_PKEY_INDEX)
625 qp->attr.pkey_index = attr->pkey_index;
626
627 if (mask & IB_QP_PORT)
628 qp->attr.port_num = attr->port_num;
629
630 if (mask & IB_QP_QKEY)
631 qp->attr.qkey = attr->qkey;
632
633 if (mask & IB_QP_AV)
634 rxe_init_av(&attr->ah_attr, &qp->pri_av);
635
636 if (mask & IB_QP_ALT_PATH) {
637 rxe_init_av(&attr->alt_ah_attr, &qp->alt_av);
638 qp->attr.alt_port_num = attr->alt_port_num;
639 qp->attr.alt_pkey_index = attr->alt_pkey_index;
640 qp->attr.alt_timeout = attr->alt_timeout;
641 }
642
643 if (mask & IB_QP_PATH_MTU) {
644 qp->attr.path_mtu = attr->path_mtu;
645 qp->mtu = ib_mtu_enum_to_int(attr->path_mtu);
646 }
647
648 if (mask & IB_QP_TIMEOUT) {
649 qp->attr.timeout = attr->timeout;
650 if (attr->timeout == 0) {
651 qp->qp_timeout_jiffies = 0;
652 } else {
653
654 int j = nsecs_to_jiffies(4096ULL << attr->timeout);
655
656 qp->qp_timeout_jiffies = j ? j : 1;
657 }
658 }
659
660 if (mask & IB_QP_RETRY_CNT) {
661 qp->attr.retry_cnt = attr->retry_cnt;
662 qp->comp.retry_cnt = attr->retry_cnt;
663 pr_debug("qp#%d set retry count = %d\n", qp_num(qp),
664 attr->retry_cnt);
665 }
666
667 if (mask & IB_QP_RNR_RETRY) {
668 qp->attr.rnr_retry = attr->rnr_retry;
669 qp->comp.rnr_retry = attr->rnr_retry;
670 pr_debug("qp#%d set rnr retry count = %d\n", qp_num(qp),
671 attr->rnr_retry);
672 }
673
674 if (mask & IB_QP_RQ_PSN) {
675 qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK);
676 qp->resp.psn = qp->attr.rq_psn;
677 pr_debug("qp#%d set resp psn = 0x%x\n", qp_num(qp),
678 qp->resp.psn);
679 }
680
681 if (mask & IB_QP_MIN_RNR_TIMER) {
682 qp->attr.min_rnr_timer = attr->min_rnr_timer;
683 pr_debug("qp#%d set min rnr timer = 0x%x\n", qp_num(qp),
684 attr->min_rnr_timer);
685 }
686
687 if (mask & IB_QP_SQ_PSN) {
688 qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK);
689 qp->req.psn = qp->attr.sq_psn;
690 qp->comp.psn = qp->attr.sq_psn;
691 pr_debug("qp#%d set req psn = 0x%x\n", qp_num(qp), qp->req.psn);
692 }
693
694 if (mask & IB_QP_PATH_MIG_STATE)
695 qp->attr.path_mig_state = attr->path_mig_state;
696
697 if (mask & IB_QP_DEST_QPN)
698 qp->attr.dest_qp_num = attr->dest_qp_num;
699
700 if (mask & IB_QP_STATE) {
701 qp->attr.qp_state = attr->qp_state;
702
703 switch (attr->qp_state) {
704 case IB_QPS_RESET:
705 pr_debug("qp#%d state -> RESET\n", qp_num(qp));
706 rxe_qp_reset(qp);
707 break;
708
709 case IB_QPS_INIT:
710 pr_debug("qp#%d state -> INIT\n", qp_num(qp));
711 qp->req.state = QP_STATE_INIT;
712 qp->resp.state = QP_STATE_INIT;
713 break;
714
715 case IB_QPS_RTR:
716 pr_debug("qp#%d state -> RTR\n", qp_num(qp));
717 qp->resp.state = QP_STATE_READY;
718 break;
719
720 case IB_QPS_RTS:
721 pr_debug("qp#%d state -> RTS\n", qp_num(qp));
722 qp->req.state = QP_STATE_READY;
723 break;
724
725 case IB_QPS_SQD:
726 pr_debug("qp#%d state -> SQD\n", qp_num(qp));
727 rxe_qp_drain(qp);
728 break;
729
730 case IB_QPS_SQE:
731 pr_warn("qp#%d state -> SQE !!?\n", qp_num(qp));
732
733 break;
734
735 case IB_QPS_ERR:
736 pr_debug("qp#%d state -> ERR\n", qp_num(qp));
737 rxe_qp_error(qp);
738 break;
739 }
740 }
741
742 return 0;
743}
744
745
746int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask)
747{
748 *attr = qp->attr;
749
750 attr->rq_psn = qp->resp.psn;
751 attr->sq_psn = qp->req.psn;
752
753 attr->cap.max_send_wr = qp->sq.max_wr;
754 attr->cap.max_send_sge = qp->sq.max_sge;
755 attr->cap.max_inline_data = qp->sq.max_inline;
756
757 if (!qp->srq) {
758 attr->cap.max_recv_wr = qp->rq.max_wr;
759 attr->cap.max_recv_sge = qp->rq.max_sge;
760 }
761
762 rxe_av_to_attr(&qp->pri_av, &attr->ah_attr);
763 rxe_av_to_attr(&qp->alt_av, &attr->alt_ah_attr);
764
765 if (qp->req.state == QP_STATE_DRAIN) {
766 attr->sq_draining = 1;
767
768
769
770
771 cond_resched();
772 } else {
773 attr->sq_draining = 0;
774 }
775
776 pr_debug("attr->sq_draining = %d\n", attr->sq_draining);
777
778 return 0;
779}
780
781
782void rxe_qp_destroy(struct rxe_qp *qp)
783{
784 qp->valid = 0;
785 qp->qp_timeout_jiffies = 0;
786 rxe_cleanup_task(&qp->resp.task);
787
788 if (qp_type(qp) == IB_QPT_RC) {
789 del_timer_sync(&qp->retrans_timer);
790 del_timer_sync(&qp->rnr_nak_timer);
791 }
792
793 rxe_cleanup_task(&qp->req.task);
794 rxe_cleanup_task(&qp->comp.task);
795
796
797 __rxe_do_task(&qp->req.task);
798 if (qp->sq.queue) {
799 __rxe_do_task(&qp->comp.task);
800 __rxe_do_task(&qp->req.task);
801 }
802}
803
804
805static void rxe_qp_do_cleanup(struct work_struct *work)
806{
807 struct rxe_qp *qp = container_of(work, typeof(*qp), cleanup_work.work);
808
809 rxe_drop_all_mcast_groups(qp);
810
811 if (qp->sq.queue)
812 rxe_queue_cleanup(qp->sq.queue);
813
814 if (qp->srq)
815 rxe_drop_ref(qp->srq);
816
817 if (qp->rq.queue)
818 rxe_queue_cleanup(qp->rq.queue);
819
820 if (qp->scq)
821 rxe_drop_ref(qp->scq);
822 if (qp->rcq)
823 rxe_drop_ref(qp->rcq);
824 if (qp->pd)
825 rxe_drop_ref(qp->pd);
826
827 if (qp->resp.mr) {
828 rxe_drop_ref(qp->resp.mr);
829 qp->resp.mr = NULL;
830 }
831
832 if (qp_type(qp) == IB_QPT_RC)
833 sk_dst_reset(qp->sk->sk);
834
835 free_rd_atomic_resources(qp);
836
837 kernel_sock_shutdown(qp->sk, SHUT_RDWR);
838 sock_release(qp->sk);
839}
840
841
842void rxe_qp_cleanup(struct rxe_pool_entry *arg)
843{
844 struct rxe_qp *qp = container_of(arg, typeof(*qp), pelem);
845
846 execute_in_process_context(rxe_qp_do_cleanup, &qp->cleanup_work);
847}
848
