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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
149 for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) {
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) {
177 for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) {
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
276 qp->qp_timeout_jiffies = 0;
277 if (init->qp_type == IB_QPT_RC) {
278 timer_setup(&qp->rnr_nak_timer, rnr_nak_timer, 0);
279 timer_setup(&qp->retrans_timer, retransmit_timer, 0);
280 }
281 return 0;
282}
283
284static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp,
285 struct ib_qp_init_attr *init,
286 struct ib_ucontext *context, struct ib_udata *udata)
287{
288 int err;
289 int wqe_size;
290
291 if (!qp->srq) {
292 qp->rq.max_wr = init->cap.max_recv_wr;
293 qp->rq.max_sge = init->cap.max_recv_sge;
294
295 wqe_size = rcv_wqe_size(qp->rq.max_sge);
296
297 pr_debug("qp#%d max_wr = %d, max_sge = %d, wqe_size = %d\n",
298 qp_num(qp), qp->rq.max_wr, qp->rq.max_sge, wqe_size);
299
300 qp->rq.queue = rxe_queue_init(rxe,
301 &qp->rq.max_wr,
302 wqe_size);
303 if (!qp->rq.queue)
304 return -ENOMEM;
305
306 err = do_mmap_info(rxe, udata, false, context,
307 qp->rq.queue->buf,
308 qp->rq.queue->buf_size,
309 &qp->rq.queue->ip);
310 if (err) {
311 kvfree(qp->rq.queue->buf);
312 kfree(qp->rq.queue);
313 return err;
314 }
315 }
316
317 spin_lock_init(&qp->rq.producer_lock);
318 spin_lock_init(&qp->rq.consumer_lock);
319
320 skb_queue_head_init(&qp->resp_pkts);
321
322 rxe_init_task(rxe, &qp->resp.task, qp,
323 rxe_responder, "resp");
324
325 qp->resp.opcode = OPCODE_NONE;
326 qp->resp.msn = 0;
327 qp->resp.state = QP_STATE_RESET;
328
329 return 0;
330}
331
332
333int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
334 struct ib_qp_init_attr *init, struct ib_udata *udata,
335 struct ib_pd *ibpd)
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 struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
342
343 rxe_add_ref(pd);
344 rxe_add_ref(rcq);
345 rxe_add_ref(scq);
346 if (srq)
347 rxe_add_ref(srq);
348
349 qp->pd = pd;
350 qp->rcq = rcq;
351 qp->scq = scq;
352 qp->srq = srq;
353
354 rxe_qp_init_misc(rxe, qp, init);
355
356 err = rxe_qp_init_req(rxe, qp, init, context, udata);
357 if (err)
358 goto err1;
359
360 err = rxe_qp_init_resp(rxe, qp, init, context, udata);
361 if (err)
362 goto err2;
363
364 qp->attr.qp_state = IB_QPS_RESET;
365 qp->valid = 1;
366
367 return 0;
368
369err2:
370 rxe_queue_cleanup(qp->sq.queue);
371err1:
372 if (srq)
373 rxe_drop_ref(srq);
374 rxe_drop_ref(scq);
375 rxe_drop_ref(rcq);
376 rxe_drop_ref(pd);
377
378 return err;
379}
380
381
382int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init)
383{
384 init->event_handler = qp->ibqp.event_handler;
385 init->qp_context = qp->ibqp.qp_context;
386 init->send_cq = qp->ibqp.send_cq;
387 init->recv_cq = qp->ibqp.recv_cq;
388 init->srq = qp->ibqp.srq;
389
390 init->cap.max_send_wr = qp->sq.max_wr;
391 init->cap.max_send_sge = qp->sq.max_sge;
392 init->cap.max_inline_data = qp->sq.max_inline;
393
394 if (!qp->srq) {
395 init->cap.max_recv_wr = qp->rq.max_wr;
396 init->cap.max_recv_sge = qp->rq.max_sge;
397 }
398
399 init->sq_sig_type = qp->sq_sig_type;
400
401 init->qp_type = qp->ibqp.qp_type;
402 init->port_num = 1;
403
404 return 0;
405}
406
407
408
409
410int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
411 struct ib_qp_attr *attr, int mask)
412{
413 enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ?
414 attr->cur_qp_state : qp->attr.qp_state;
415 enum ib_qp_state new_state = (mask & IB_QP_STATE) ?
416 attr->qp_state : cur_state;
417
418 if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask,
419 IB_LINK_LAYER_ETHERNET)) {
420 pr_warn("invalid mask or state for qp\n");
421 goto err1;
422 }
423
424 if (mask & IB_QP_STATE) {
425 if (cur_state == IB_QPS_SQD) {
426 if (qp->req.state == QP_STATE_DRAIN &&
427 new_state != IB_QPS_ERR)
428 goto err1;
429 }
430 }
431
432 if (mask & IB_QP_PORT) {
433 if (attr->port_num != 1) {
434 pr_warn("invalid port %d\n", attr->port_num);
435 goto err1;
436 }
437 }
438
439 if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap, !!qp->srq))
440 goto err1;
441
442 if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr))
443 goto err1;
444
445 if (mask & IB_QP_ALT_PATH) {
446 if (rxe_av_chk_attr(rxe, &attr->alt_ah_attr))
447 goto err1;
448 if (attr->alt_port_num != 1) {
449 pr_warn("invalid alt port %d\n", attr->alt_port_num);
450 goto err1;
451 }
452 if (attr->alt_timeout > 31) {
453 pr_warn("invalid QP alt timeout %d > 31\n",
454 attr->alt_timeout);
455 goto err1;
456 }
457 }
458
459 if (mask & IB_QP_PATH_MTU) {
460 struct rxe_port *port = &rxe->port;
461
462 enum ib_mtu max_mtu = port->attr.max_mtu;
463 enum ib_mtu mtu = attr->path_mtu;
464
465 if (mtu > max_mtu) {
466 pr_debug("invalid mtu (%d) > (%d)\n",
467 ib_mtu_enum_to_int(mtu),
468 ib_mtu_enum_to_int(max_mtu));
469 goto err1;
470 }
471 }
472
473 if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
474 if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) {
475 pr_warn("invalid max_rd_atomic %d > %d\n",
476 attr->max_rd_atomic,
477 rxe->attr.max_qp_rd_atom);
478 goto err1;
479 }
480 }
481
482 if (mask & IB_QP_TIMEOUT) {
483 if (attr->timeout > 31) {
484 pr_warn("invalid QP timeout %d > 31\n",
485 attr->timeout);
486 goto err1;
487 }
488 }
489
490 return 0;
491
492err1:
493 return -EINVAL;
494}
495
496
497static void rxe_qp_reset(struct rxe_qp *qp)
498{
499
500 rxe_disable_task(&qp->resp.task);
501
502
503 if (qp->sq.queue) {
504 if (qp_type(qp) == IB_QPT_RC)
505 rxe_disable_task(&qp->comp.task);
506 rxe_disable_task(&qp->req.task);
507 }
508
509
510 qp->req.state = QP_STATE_RESET;
511 qp->resp.state = QP_STATE_RESET;
512
513
514
515
516 __rxe_do_task(&qp->resp.task);
517
518 if (qp->sq.queue) {
519 __rxe_do_task(&qp->comp.task);
520 __rxe_do_task(&qp->req.task);
521 rxe_queue_reset(qp->sq.queue);
522 }
523
524
525 atomic_set(&qp->ssn, 0);
526 qp->req.opcode = -1;
527 qp->req.need_retry = 0;
528 qp->req.noack_pkts = 0;
529 qp->resp.msn = 0;
530 qp->resp.opcode = -1;
531 qp->resp.drop_msg = 0;
532 qp->resp.goto_error = 0;
533 qp->resp.sent_psn_nak = 0;
534
535 if (qp->resp.mr) {
536 rxe_drop_ref(qp->resp.mr);
537 qp->resp.mr = NULL;
538 }
539
540 cleanup_rd_atomic_resources(qp);
541
542
543 rxe_enable_task(&qp->resp.task);
544
545 if (qp->sq.queue) {
546 if (qp_type(qp) == IB_QPT_RC)
547 rxe_enable_task(&qp->comp.task);
548
549 rxe_enable_task(&qp->req.task);
550 }
551}
552
553
554static void rxe_qp_drain(struct rxe_qp *qp)
555{
556 if (qp->sq.queue) {
557 if (qp->req.state != QP_STATE_DRAINED) {
558 qp->req.state = QP_STATE_DRAIN;
559 if (qp_type(qp) == IB_QPT_RC)
560 rxe_run_task(&qp->comp.task, 1);
561 else
562 __rxe_do_task(&qp->comp.task);
563 rxe_run_task(&qp->req.task, 1);
564 }
565 }
566}
567
568
569void rxe_qp_error(struct rxe_qp *qp)
570{
571 qp->req.state = QP_STATE_ERROR;
572 qp->resp.state = QP_STATE_ERROR;
573 qp->attr.qp_state = IB_QPS_ERR;
574
575
576 rxe_run_task(&qp->resp.task, 1);
577
578 if (qp_type(qp) == IB_QPT_RC)
579 rxe_run_task(&qp->comp.task, 1);
580 else
581 __rxe_do_task(&qp->comp.task);
582 rxe_run_task(&qp->req.task, 1);
583}
584
585
586int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
587 struct ib_udata *udata)
588{
589 int err;
590 struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
591 union ib_gid sgid;
592 struct ib_gid_attr sgid_attr;
593
594 if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
595 int max_rd_atomic = __roundup_pow_of_two(attr->max_rd_atomic);
596
597 qp->attr.max_rd_atomic = max_rd_atomic;
598 atomic_set(&qp->req.rd_atomic, max_rd_atomic);
599 }
600
601 if (mask & IB_QP_MAX_DEST_RD_ATOMIC) {
602 int max_dest_rd_atomic =
603 __roundup_pow_of_two(attr->max_dest_rd_atomic);
604
605 qp->attr.max_dest_rd_atomic = max_dest_rd_atomic;
606
607 free_rd_atomic_resources(qp);
608
609 err = alloc_rd_atomic_resources(qp, max_dest_rd_atomic);
610 if (err)
611 return err;
612 }
613
614 if (mask & IB_QP_CUR_STATE)
615 qp->attr.cur_qp_state = attr->qp_state;
616
617 if (mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
618 qp->attr.en_sqd_async_notify = attr->en_sqd_async_notify;
619
620 if (mask & IB_QP_ACCESS_FLAGS)
621 qp->attr.qp_access_flags = attr->qp_access_flags;
622
623 if (mask & IB_QP_PKEY_INDEX)
624 qp->attr.pkey_index = attr->pkey_index;
625
626 if (mask & IB_QP_PORT)
627 qp->attr.port_num = attr->port_num;
628
629 if (mask & IB_QP_QKEY)
630 qp->attr.qkey = attr->qkey;
631
632 if (mask & IB_QP_AV) {
633 ib_get_cached_gid(&rxe->ib_dev, 1,
634 rdma_ah_read_grh(&attr->ah_attr)->sgid_index,
635 &sgid, &sgid_attr);
636 rxe_av_from_attr(rxe, attr->port_num, &qp->pri_av,
637 &attr->ah_attr);
638 rxe_av_fill_ip_info(rxe, &qp->pri_av, &attr->ah_attr,
639 &sgid_attr, &sgid);
640 if (sgid_attr.ndev)
641 dev_put(sgid_attr.ndev);
642 }
643
644 if (mask & IB_QP_ALT_PATH) {
645 u8 sgid_index =
646 rdma_ah_read_grh(&attr->alt_ah_attr)->sgid_index;
647
648 ib_get_cached_gid(&rxe->ib_dev, 1, sgid_index,
649 &sgid, &sgid_attr);
650
651 rxe_av_from_attr(rxe, attr->alt_port_num, &qp->alt_av,
652 &attr->alt_ah_attr);
653 rxe_av_fill_ip_info(rxe, &qp->alt_av, &attr->alt_ah_attr,
654 &sgid_attr, &sgid);
655 if (sgid_attr.ndev)
656 dev_put(sgid_attr.ndev);
657
658 qp->attr.alt_port_num = attr->alt_port_num;
659 qp->attr.alt_pkey_index = attr->alt_pkey_index;
660 qp->attr.alt_timeout = attr->alt_timeout;
661 }
662
663 if (mask & IB_QP_PATH_MTU) {
664 qp->attr.path_mtu = attr->path_mtu;
665 qp->mtu = ib_mtu_enum_to_int(attr->path_mtu);
666 }
667
668 if (mask & IB_QP_TIMEOUT) {
669 qp->attr.timeout = attr->timeout;
670 if (attr->timeout == 0) {
671 qp->qp_timeout_jiffies = 0;
672 } else {
673
674 int j = nsecs_to_jiffies(4096ULL << attr->timeout);
675
676 qp->qp_timeout_jiffies = j ? j : 1;
677 }
678 }
679
680 if (mask & IB_QP_RETRY_CNT) {
681 qp->attr.retry_cnt = attr->retry_cnt;
682 qp->comp.retry_cnt = attr->retry_cnt;
683 pr_debug("qp#%d set retry count = %d\n", qp_num(qp),
684 attr->retry_cnt);
685 }
686
687 if (mask & IB_QP_RNR_RETRY) {
688 qp->attr.rnr_retry = attr->rnr_retry;
689 qp->comp.rnr_retry = attr->rnr_retry;
690 pr_debug("qp#%d set rnr retry count = %d\n", qp_num(qp),
691 attr->rnr_retry);
692 }
693
694 if (mask & IB_QP_RQ_PSN) {
695 qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK);
696 qp->resp.psn = qp->attr.rq_psn;
697 pr_debug("qp#%d set resp psn = 0x%x\n", qp_num(qp),
698 qp->resp.psn);
699 }
700
701 if (mask & IB_QP_MIN_RNR_TIMER) {
702 qp->attr.min_rnr_timer = attr->min_rnr_timer;
703 pr_debug("qp#%d set min rnr timer = 0x%x\n", qp_num(qp),
704 attr->min_rnr_timer);
705 }
706
707 if (mask & IB_QP_SQ_PSN) {
708 qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK);
709 qp->req.psn = qp->attr.sq_psn;
710 qp->comp.psn = qp->attr.sq_psn;
711 pr_debug("qp#%d set req psn = 0x%x\n", qp_num(qp), qp->req.psn);
712 }
713
714 if (mask & IB_QP_PATH_MIG_STATE)
715 qp->attr.path_mig_state = attr->path_mig_state;
716
717 if (mask & IB_QP_DEST_QPN)
718 qp->attr.dest_qp_num = attr->dest_qp_num;
719
720 if (mask & IB_QP_STATE) {
721 qp->attr.qp_state = attr->qp_state;
722
723 switch (attr->qp_state) {
724 case IB_QPS_RESET:
725 pr_debug("qp#%d state -> RESET\n", qp_num(qp));
726 rxe_qp_reset(qp);
727 break;
728
729 case IB_QPS_INIT:
730 pr_debug("qp#%d state -> INIT\n", qp_num(qp));
731 qp->req.state = QP_STATE_INIT;
732 qp->resp.state = QP_STATE_INIT;
733 break;
734
735 case IB_QPS_RTR:
736 pr_debug("qp#%d state -> RTR\n", qp_num(qp));
737 qp->resp.state = QP_STATE_READY;
738 break;
739
740 case IB_QPS_RTS:
741 pr_debug("qp#%d state -> RTS\n", qp_num(qp));
742 qp->req.state = QP_STATE_READY;
743 break;
744
745 case IB_QPS_SQD:
746 pr_debug("qp#%d state -> SQD\n", qp_num(qp));
747 rxe_qp_drain(qp);
748 break;
749
750 case IB_QPS_SQE:
751 pr_warn("qp#%d state -> SQE !!?\n", qp_num(qp));
752
753 break;
754
755 case IB_QPS_ERR:
756 pr_debug("qp#%d state -> ERR\n", qp_num(qp));
757 rxe_qp_error(qp);
758 break;
759 }
760 }
761
762 return 0;
763}
764
765
766int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask)
767{
768 struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
769
770 *attr = qp->attr;
771
772 attr->rq_psn = qp->resp.psn;
773 attr->sq_psn = qp->req.psn;
774
775 attr->cap.max_send_wr = qp->sq.max_wr;
776 attr->cap.max_send_sge = qp->sq.max_sge;
777 attr->cap.max_inline_data = qp->sq.max_inline;
778
779 if (!qp->srq) {
780 attr->cap.max_recv_wr = qp->rq.max_wr;
781 attr->cap.max_recv_sge = qp->rq.max_sge;
782 }
783
784 rxe_av_to_attr(rxe, &qp->pri_av, &attr->ah_attr);
785 rxe_av_to_attr(rxe, &qp->alt_av, &attr->alt_ah_attr);
786
787 if (qp->req.state == QP_STATE_DRAIN) {
788 attr->sq_draining = 1;
789
790
791
792
793 cond_resched();
794 } else {
795 attr->sq_draining = 0;
796 }
797
798 pr_debug("attr->sq_draining = %d\n", attr->sq_draining);
799
800 return 0;
801}
802
803
804void rxe_qp_destroy(struct rxe_qp *qp)
805{
806 qp->valid = 0;
807 qp->qp_timeout_jiffies = 0;
808 rxe_cleanup_task(&qp->resp.task);
809
810 if (qp_type(qp) == IB_QPT_RC) {
811 del_timer_sync(&qp->retrans_timer);
812 del_timer_sync(&qp->rnr_nak_timer);
813 }
814
815 rxe_cleanup_task(&qp->req.task);
816 rxe_cleanup_task(&qp->comp.task);
817
818
819 __rxe_do_task(&qp->req.task);
820 if (qp->sq.queue) {
821 __rxe_do_task(&qp->comp.task);
822 __rxe_do_task(&qp->req.task);
823 }
824}
825
826
827void rxe_qp_cleanup(struct rxe_pool_entry *arg)
828{
829 struct rxe_qp *qp = container_of(arg, typeof(*qp), pelem);
830
831 rxe_drop_all_mcast_groups(qp);
832
833 if (qp->sq.queue)
834 rxe_queue_cleanup(qp->sq.queue);
835
836 if (qp->srq)
837 rxe_drop_ref(qp->srq);
838
839 if (qp->rq.queue)
840 rxe_queue_cleanup(qp->rq.queue);
841
842 if (qp->scq)
843 rxe_drop_ref(qp->scq);
844 if (qp->rcq)
845 rxe_drop_ref(qp->rcq);
846 if (qp->pd)
847 rxe_drop_ref(qp->pd);
848
849 if (qp->resp.mr) {
850 rxe_drop_ref(qp->resp.mr);
851 qp->resp.mr = NULL;
852 }
853
854 if (qp_type(qp) == IB_QPT_RC)
855 sk_dst_reset(qp->sk->sk);
856
857 free_rd_atomic_resources(qp);
858
859 kernel_sock_shutdown(qp->sk, SHUT_RDWR);
860 sock_release(qp->sk);
861}
862
