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18#include <linux/bug.h>
19#include <linux/errno.h>
20#include <linux/module.h>
21#include <linux/spinlock.h>
22
23#include "usnic_log.h"
24#include "usnic_vnic.h"
25#include "usnic_fwd.h"
26#include "usnic_uiom.h"
27#include "usnic_debugfs.h"
28#include "usnic_ib_qp_grp.h"
29#include "usnic_ib_sysfs.h"
30#include "usnic_transport.h"
31
32#define DFLT_RQ_IDX 0
33
34const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state)
35{
36 switch (state) {
37 case IB_QPS_RESET:
38 return "Rst";
39 case IB_QPS_INIT:
40 return "Init";
41 case IB_QPS_RTR:
42 return "RTR";
43 case IB_QPS_RTS:
44 return "RTS";
45 case IB_QPS_SQD:
46 return "SQD";
47 case IB_QPS_SQE:
48 return "SQE";
49 case IB_QPS_ERR:
50 return "ERR";
51 default:
52 return "UNKOWN STATE";
53
54 }
55}
56
57int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz)
58{
59 return scnprintf(buf, buf_sz, "|QPN\t|State\t|PID\t|VF Idx\t|Fil ID");
60}
61
62int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz)
63{
64 struct usnic_ib_qp_grp *qp_grp = obj;
65 struct usnic_ib_qp_grp_flow *default_flow;
66 if (obj) {
67 default_flow = list_first_entry(&qp_grp->flows_lst,
68 struct usnic_ib_qp_grp_flow, link);
69 return scnprintf(buf, buf_sz, "|%d\t|%s\t|%d\t|%hu\t|%d",
70 qp_grp->ibqp.qp_num,
71 usnic_ib_qp_grp_state_to_string(
72 qp_grp->state),
73 qp_grp->owner_pid,
74 usnic_vnic_get_index(qp_grp->vf->vnic),
75 default_flow->flow->flow_id);
76 } else {
77 return scnprintf(buf, buf_sz, "|N/A\t|N/A\t|N/A\t|N/A\t|N/A");
78 }
79}
80
81static struct usnic_vnic_res_chunk *
82get_qp_res_chunk(struct usnic_ib_qp_grp *qp_grp)
83{
84 lockdep_assert_held(&qp_grp->lock);
85
86
87
88
89 return usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ);
90}
91
92static int enable_qp_grp(struct usnic_ib_qp_grp *qp_grp)
93{
94
95 int status;
96 int i, vnic_idx;
97 struct usnic_vnic_res_chunk *res_chunk;
98 struct usnic_vnic_res *res;
99
100 lockdep_assert_held(&qp_grp->lock);
101
102 vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic);
103
104 res_chunk = get_qp_res_chunk(qp_grp);
105 if (IS_ERR_OR_NULL(res_chunk)) {
106 usnic_err("Unable to get qp res with err %ld\n",
107 PTR_ERR(res_chunk));
108 return res_chunk ? PTR_ERR(res_chunk) : -ENOMEM;
109 }
110
111 for (i = 0; i < res_chunk->cnt; i++) {
112 res = res_chunk->res[i];
113 status = usnic_fwd_enable_qp(qp_grp->ufdev, vnic_idx,
114 res->vnic_idx);
115 if (status) {
116 usnic_err("Failed to enable qp %d of %s:%d\n with err %d\n",
117 res->vnic_idx, qp_grp->ufdev->name,
118 vnic_idx, status);
119 goto out_err;
120 }
121 }
122
123 return 0;
124
125out_err:
126 for (i--; i >= 0; i--) {
127 res = res_chunk->res[i];
128 usnic_fwd_disable_qp(qp_grp->ufdev, vnic_idx,
129 res->vnic_idx);
130 }
131
132 return status;
133}
134
135static int disable_qp_grp(struct usnic_ib_qp_grp *qp_grp)
136{
137 int i, vnic_idx;
138 struct usnic_vnic_res_chunk *res_chunk;
139 struct usnic_vnic_res *res;
140 int status = 0;
141
142 lockdep_assert_held(&qp_grp->lock);
143 vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic);
144
145 res_chunk = get_qp_res_chunk(qp_grp);
146 if (IS_ERR_OR_NULL(res_chunk)) {
147 usnic_err("Unable to get qp res with err %ld\n",
148 PTR_ERR(res_chunk));
149 return res_chunk ? PTR_ERR(res_chunk) : -ENOMEM;
150 }
151
152 for (i = 0; i < res_chunk->cnt; i++) {
153 res = res_chunk->res[i];
154 status = usnic_fwd_disable_qp(qp_grp->ufdev, vnic_idx,
155 res->vnic_idx);
156 if (status) {
157 usnic_err("Failed to disable rq %d of %s:%d\n with err %d\n",
158 res->vnic_idx,
159 qp_grp->ufdev->name,
160 vnic_idx, status);
161 }
162 }
163
164 return status;
165
166}
167
168static int init_filter_action(struct usnic_ib_qp_grp *qp_grp,
169 struct usnic_filter_action *uaction)
170{
171 struct usnic_vnic_res_chunk *res_chunk;
172
173 res_chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ);
174 if (IS_ERR_OR_NULL(res_chunk)) {
175 usnic_err("Unable to get %s with err %ld\n",
176 usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ),
177 PTR_ERR(res_chunk));
178 return res_chunk ? PTR_ERR(res_chunk) : -ENOMEM;
179 }
180
181 uaction->vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic);
182 uaction->action.type = FILTER_ACTION_RQ_STEERING;
183 uaction->action.u.rq_idx = res_chunk->res[DFLT_RQ_IDX]->vnic_idx;
184
185 return 0;
186}
187
188static struct usnic_ib_qp_grp_flow*
189create_roce_custom_flow(struct usnic_ib_qp_grp *qp_grp,
190 struct usnic_transport_spec *trans_spec)
191{
192 uint16_t port_num;
193 int err;
194 struct filter filter;
195 struct usnic_filter_action uaction;
196 struct usnic_ib_qp_grp_flow *qp_flow;
197 struct usnic_fwd_flow *flow;
198 enum usnic_transport_type trans_type;
199
200 trans_type = trans_spec->trans_type;
201 port_num = trans_spec->usnic_roce.port_num;
202
203
204 port_num = usnic_transport_rsrv_port(trans_type, port_num);
205 if (port_num == 0)
206 return ERR_PTR(-EINVAL);
207
208
209 usnic_fwd_init_usnic_filter(&filter, port_num);
210 err = init_filter_action(qp_grp, &uaction);
211 if (err)
212 goto out_unreserve_port;
213
214 flow = usnic_fwd_alloc_flow(qp_grp->ufdev, &filter, &uaction);
215 if (IS_ERR_OR_NULL(flow)) {
216 usnic_err("Unable to alloc flow failed with err %ld\n",
217 PTR_ERR(flow));
218 err = flow ? PTR_ERR(flow) : -EFAULT;
219 goto out_unreserve_port;
220 }
221
222
223 qp_flow = kzalloc(sizeof(*qp_flow), GFP_ATOMIC);
224 if (IS_ERR_OR_NULL(qp_flow)) {
225 err = qp_flow ? PTR_ERR(qp_flow) : -ENOMEM;
226 goto out_dealloc_flow;
227 }
228 qp_flow->flow = flow;
229 qp_flow->trans_type = trans_type;
230 qp_flow->usnic_roce.port_num = port_num;
231 qp_flow->qp_grp = qp_grp;
232 return qp_flow;
233
234out_dealloc_flow:
235 usnic_fwd_dealloc_flow(flow);
236out_unreserve_port:
237 usnic_transport_unrsrv_port(trans_type, port_num);
238 return ERR_PTR(err);
239}
240
241static void release_roce_custom_flow(struct usnic_ib_qp_grp_flow *qp_flow)
242{
243 usnic_fwd_dealloc_flow(qp_flow->flow);
244 usnic_transport_unrsrv_port(qp_flow->trans_type,
245 qp_flow->usnic_roce.port_num);
246 kfree(qp_flow);
247}
248
249static struct usnic_ib_qp_grp_flow*
250create_udp_flow(struct usnic_ib_qp_grp *qp_grp,
251 struct usnic_transport_spec *trans_spec)
252{
253 struct socket *sock;
254 int sock_fd;
255 int err;
256 struct filter filter;
257 struct usnic_filter_action uaction;
258 struct usnic_ib_qp_grp_flow *qp_flow;
259 struct usnic_fwd_flow *flow;
260 enum usnic_transport_type trans_type;
261 uint32_t addr;
262 uint16_t port_num;
263 int proto;
264
265 trans_type = trans_spec->trans_type;
266 sock_fd = trans_spec->udp.sock_fd;
267
268
269 sock = usnic_transport_get_socket(sock_fd);
270 if (IS_ERR_OR_NULL(sock))
271 return ERR_CAST(sock);
272
273 err = usnic_transport_sock_get_addr(sock, &proto, &addr, &port_num);
274 if (err)
275 goto out_put_sock;
276
277 if (proto != IPPROTO_UDP) {
278 usnic_err("Protocol for fd %d is not UDP", sock_fd);
279 err = -EPERM;
280 goto out_put_sock;
281 }
282
283
284 usnic_fwd_init_udp_filter(&filter, addr, port_num);
285 err = init_filter_action(qp_grp, &uaction);
286 if (err)
287 goto out_put_sock;
288
289 flow = usnic_fwd_alloc_flow(qp_grp->ufdev, &filter, &uaction);
290 if (IS_ERR_OR_NULL(flow)) {
291 usnic_err("Unable to alloc flow failed with err %ld\n",
292 PTR_ERR(flow));
293 err = flow ? PTR_ERR(flow) : -EFAULT;
294 goto out_put_sock;
295 }
296
297
298 qp_flow = kzalloc(sizeof(*qp_flow), GFP_ATOMIC);
299 if (IS_ERR_OR_NULL(qp_flow)) {
300 err = qp_flow ? PTR_ERR(qp_flow) : -ENOMEM;
301 goto out_dealloc_flow;
302 }
303 qp_flow->flow = flow;
304 qp_flow->trans_type = trans_type;
305 qp_flow->udp.sock = sock;
306 qp_flow->qp_grp = qp_grp;
307 return qp_flow;
308
309out_dealloc_flow:
310 usnic_fwd_dealloc_flow(flow);
311out_put_sock:
312 usnic_transport_put_socket(sock);
313 return ERR_PTR(err);
314}
315
316static void release_udp_flow(struct usnic_ib_qp_grp_flow *qp_flow)
317{
318 usnic_fwd_dealloc_flow(qp_flow->flow);
319 usnic_transport_put_socket(qp_flow->udp.sock);
320 kfree(qp_flow);
321}
322
323static struct usnic_ib_qp_grp_flow*
324create_and_add_flow(struct usnic_ib_qp_grp *qp_grp,
325 struct usnic_transport_spec *trans_spec)
326{
327 struct usnic_ib_qp_grp_flow *qp_flow;
328 enum usnic_transport_type trans_type;
329
330 trans_type = trans_spec->trans_type;
331 switch (trans_type) {
332 case USNIC_TRANSPORT_ROCE_CUSTOM:
333 qp_flow = create_roce_custom_flow(qp_grp, trans_spec);
334 break;
335 case USNIC_TRANSPORT_IPV4_UDP:
336 qp_flow = create_udp_flow(qp_grp, trans_spec);
337 break;
338 default:
339 usnic_err("Unsupported transport %u\n",
340 trans_spec->trans_type);
341 return ERR_PTR(-EINVAL);
342 }
343
344 if (!IS_ERR_OR_NULL(qp_flow)) {
345 list_add_tail(&qp_flow->link, &qp_grp->flows_lst);
346 usnic_debugfs_flow_add(qp_flow);
347 }
348
349
350 return qp_flow;
351}
352
353static void release_and_remove_flow(struct usnic_ib_qp_grp_flow *qp_flow)
354{
355 usnic_debugfs_flow_remove(qp_flow);
356 list_del(&qp_flow->link);
357
358 switch (qp_flow->trans_type) {
359 case USNIC_TRANSPORT_ROCE_CUSTOM:
360 release_roce_custom_flow(qp_flow);
361 break;
362 case USNIC_TRANSPORT_IPV4_UDP:
363 release_udp_flow(qp_flow);
364 break;
365 default:
366 WARN(1, "Unsupported transport %u\n",
367 qp_flow->trans_type);
368 break;
369 }
370}
371
372static void release_and_remove_all_flows(struct usnic_ib_qp_grp *qp_grp)
373{
374 struct usnic_ib_qp_grp_flow *qp_flow, *tmp;
375 list_for_each_entry_safe(qp_flow, tmp, &qp_grp->flows_lst, link)
376 release_and_remove_flow(qp_flow);
377}
378
379int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp,
380 enum ib_qp_state new_state,
381 void *data)
382{
383 int status = 0;
384 int vnic_idx;
385 struct ib_event ib_event;
386 enum ib_qp_state old_state;
387 struct usnic_transport_spec *trans_spec;
388 struct usnic_ib_qp_grp_flow *qp_flow;
389
390 old_state = qp_grp->state;
391 vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic);
392 trans_spec = (struct usnic_transport_spec *) data;
393
394 spin_lock(&qp_grp->lock);
395 switch (new_state) {
396 case IB_QPS_RESET:
397 switch (old_state) {
398 case IB_QPS_RESET:
399
400 break;
401 case IB_QPS_INIT:
402 release_and_remove_all_flows(qp_grp);
403 status = 0;
404 break;
405 case IB_QPS_RTR:
406 case IB_QPS_RTS:
407 case IB_QPS_ERR:
408 status = disable_qp_grp(qp_grp);
409 release_and_remove_all_flows(qp_grp);
410 break;
411 default:
412 status = -EINVAL;
413 }
414 break;
415 case IB_QPS_INIT:
416 switch (old_state) {
417 case IB_QPS_RESET:
418 if (trans_spec) {
419 qp_flow = create_and_add_flow(qp_grp,
420 trans_spec);
421 if (IS_ERR_OR_NULL(qp_flow)) {
422 status = qp_flow ? PTR_ERR(qp_flow) : -EFAULT;
423 break;
424 }
425 } else {
426
427
428
429 status = 0;
430 }
431 break;
432 case IB_QPS_INIT:
433 if (trans_spec) {
434 qp_flow = create_and_add_flow(qp_grp,
435 trans_spec);
436 if (IS_ERR_OR_NULL(qp_flow)) {
437 status = qp_flow ? PTR_ERR(qp_flow) : -EFAULT;
438 break;
439 }
440 } else {
441
442
443
444
445 status = -EINVAL;
446 }
447 break;
448 case IB_QPS_RTR:
449 status = disable_qp_grp(qp_grp);
450 break;
451 case IB_QPS_RTS:
452 status = disable_qp_grp(qp_grp);
453 break;
454 default:
455 status = -EINVAL;
456 }
457 break;
458 case IB_QPS_RTR:
459 switch (old_state) {
460 case IB_QPS_INIT:
461 status = enable_qp_grp(qp_grp);
462 break;
463 default:
464 status = -EINVAL;
465 }
466 break;
467 case IB_QPS_RTS:
468 switch (old_state) {
469 case IB_QPS_RTR:
470
471 break;
472 default:
473 status = -EINVAL;
474 }
475 break;
476 case IB_QPS_ERR:
477 ib_event.device = &qp_grp->vf->pf->ib_dev;
478 ib_event.element.qp = &qp_grp->ibqp;
479 ib_event.event = IB_EVENT_QP_FATAL;
480
481 switch (old_state) {
482 case IB_QPS_RESET:
483 qp_grp->ibqp.event_handler(&ib_event,
484 qp_grp->ibqp.qp_context);
485 break;
486 case IB_QPS_INIT:
487 release_and_remove_all_flows(qp_grp);
488 qp_grp->ibqp.event_handler(&ib_event,
489 qp_grp->ibqp.qp_context);
490 break;
491 case IB_QPS_RTR:
492 case IB_QPS_RTS:
493 status = disable_qp_grp(qp_grp);
494 release_and_remove_all_flows(qp_grp);
495 qp_grp->ibqp.event_handler(&ib_event,
496 qp_grp->ibqp.qp_context);
497 break;
498 default:
499 status = -EINVAL;
500 }
501 break;
502 default:
503 status = -EINVAL;
504 }
505 spin_unlock(&qp_grp->lock);
506
507 if (!status) {
508 qp_grp->state = new_state;
509 usnic_info("Transistioned %u from %s to %s",
510 qp_grp->grp_id,
511 usnic_ib_qp_grp_state_to_string(old_state),
512 usnic_ib_qp_grp_state_to_string(new_state));
513 } else {
514 usnic_err("Failed to transition %u from %s to %s",
515 qp_grp->grp_id,
516 usnic_ib_qp_grp_state_to_string(old_state),
517 usnic_ib_qp_grp_state_to_string(new_state));
518 }
519
520 return status;
521}
522
523static struct usnic_vnic_res_chunk**
524alloc_res_chunk_list(struct usnic_vnic *vnic,
525 struct usnic_vnic_res_spec *res_spec, void *owner_obj)
526{
527 enum usnic_vnic_res_type res_type;
528 struct usnic_vnic_res_chunk **res_chunk_list;
529 int err, i, res_cnt, res_lst_sz;
530
531 for (res_lst_sz = 0;
532 res_spec->resources[res_lst_sz].type != USNIC_VNIC_RES_TYPE_EOL;
533 res_lst_sz++) {
534
535 }
536
537 res_chunk_list = kzalloc(sizeof(*res_chunk_list)*(res_lst_sz+1),
538 GFP_ATOMIC);
539 if (!res_chunk_list)
540 return ERR_PTR(-ENOMEM);
541
542 for (i = 0; res_spec->resources[i].type != USNIC_VNIC_RES_TYPE_EOL;
543 i++) {
544 res_type = res_spec->resources[i].type;
545 res_cnt = res_spec->resources[i].cnt;
546
547 res_chunk_list[i] = usnic_vnic_get_resources(vnic, res_type,
548 res_cnt, owner_obj);
549 if (IS_ERR_OR_NULL(res_chunk_list[i])) {
550 err = res_chunk_list[i] ?
551 PTR_ERR(res_chunk_list[i]) : -ENOMEM;
552 usnic_err("Failed to get %s from %s with err %d\n",
553 usnic_vnic_res_type_to_str(res_type),
554 usnic_vnic_pci_name(vnic),
555 err);
556 goto out_free_res;
557 }
558 }
559
560 return res_chunk_list;
561
562out_free_res:
563 for (i--; i > 0; i--)
564 usnic_vnic_put_resources(res_chunk_list[i]);
565 kfree(res_chunk_list);
566 return ERR_PTR(err);
567}
568
569static void free_qp_grp_res(struct usnic_vnic_res_chunk **res_chunk_list)
570{
571 int i;
572 for (i = 0; res_chunk_list[i]; i++)
573 usnic_vnic_put_resources(res_chunk_list[i]);
574 kfree(res_chunk_list);
575}
576
577static int qp_grp_and_vf_bind(struct usnic_ib_vf *vf,
578 struct usnic_ib_pd *pd,
579 struct usnic_ib_qp_grp *qp_grp)
580{
581 int err;
582 struct pci_dev *pdev;
583
584 lockdep_assert_held(&vf->lock);
585
586 pdev = usnic_vnic_get_pdev(vf->vnic);
587 if (vf->qp_grp_ref_cnt == 0) {
588 err = usnic_uiom_attach_dev_to_pd(pd->umem_pd, &pdev->dev);
589 if (err) {
590 usnic_err("Failed to attach %s to domain\n",
591 pci_name(pdev));
592 return err;
593 }
594 vf->pd = pd;
595 }
596 vf->qp_grp_ref_cnt++;
597
598 WARN_ON(vf->pd != pd);
599 qp_grp->vf = vf;
600
601 return 0;
602}
603
604static void qp_grp_and_vf_unbind(struct usnic_ib_qp_grp *qp_grp)
605{
606 struct pci_dev *pdev;
607 struct usnic_ib_pd *pd;
608
609 lockdep_assert_held(&qp_grp->vf->lock);
610
611 pd = qp_grp->vf->pd;
612 pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic);
613 if (--qp_grp->vf->qp_grp_ref_cnt == 0) {
614 qp_grp->vf->pd = NULL;
615 usnic_uiom_detach_dev_from_pd(pd->umem_pd, &pdev->dev);
616 }
617 qp_grp->vf = NULL;
618}
619
620static void log_spec(struct usnic_vnic_res_spec *res_spec)
621{
622 char buf[512];
623 usnic_vnic_spec_dump(buf, sizeof(buf), res_spec);
624 usnic_dbg("%s\n", buf);
625}
626
627static int qp_grp_id_from_flow(struct usnic_ib_qp_grp_flow *qp_flow,
628 uint32_t *id)
629{
630 enum usnic_transport_type trans_type = qp_flow->trans_type;
631 int err;
632 uint16_t port_num = 0;
633
634 switch (trans_type) {
635 case USNIC_TRANSPORT_ROCE_CUSTOM:
636 *id = qp_flow->usnic_roce.port_num;
637 break;
638 case USNIC_TRANSPORT_IPV4_UDP:
639 err = usnic_transport_sock_get_addr(qp_flow->udp.sock,
640 NULL, NULL,
641 &port_num);
642 if (err)
643 return err;
644
645
646
647
648
649 *id = port_num;
650 break;
651 default:
652 usnic_err("Unsupported transport %u\n", trans_type);
653 return -EINVAL;
654 }
655
656 return 0;
657}
658
659struct usnic_ib_qp_grp *
660usnic_ib_qp_grp_create(struct usnic_fwd_dev *ufdev, struct usnic_ib_vf *vf,
661 struct usnic_ib_pd *pd,
662 struct usnic_vnic_res_spec *res_spec,
663 struct usnic_transport_spec *transport_spec)
664{
665 struct usnic_ib_qp_grp *qp_grp;
666 int err;
667 enum usnic_transport_type transport = transport_spec->trans_type;
668 struct usnic_ib_qp_grp_flow *qp_flow;
669
670 lockdep_assert_held(&vf->lock);
671
672 err = usnic_vnic_res_spec_satisfied(&min_transport_spec[transport],
673 res_spec);
674 if (err) {
675 usnic_err("Spec does not meet miniumum req for transport %d\n",
676 transport);
677 log_spec(res_spec);
678 return ERR_PTR(err);
679 }
680
681 qp_grp = kzalloc(sizeof(*qp_grp), GFP_ATOMIC);
682 if (!qp_grp) {
683 usnic_err("Unable to alloc qp_grp - Out of memory\n");
684 return NULL;
685 }
686
687 qp_grp->res_chunk_list = alloc_res_chunk_list(vf->vnic, res_spec,
688 qp_grp);
689 if (IS_ERR_OR_NULL(qp_grp->res_chunk_list)) {
690 err = qp_grp->res_chunk_list ?
691 PTR_ERR(qp_grp->res_chunk_list) : -ENOMEM;
692 usnic_err("Unable to alloc res for %d with err %d\n",
693 qp_grp->grp_id, err);
694 goto out_free_qp_grp;
695 }
696
697 err = qp_grp_and_vf_bind(vf, pd, qp_grp);
698 if (err)
699 goto out_free_res;
700
701 INIT_LIST_HEAD(&qp_grp->flows_lst);
702 spin_lock_init(&qp_grp->lock);
703 qp_grp->ufdev = ufdev;
704 qp_grp->state = IB_QPS_RESET;
705 qp_grp->owner_pid = current->pid;
706
707 qp_flow = create_and_add_flow(qp_grp, transport_spec);
708 if (IS_ERR_OR_NULL(qp_flow)) {
709 usnic_err("Unable to create and add flow with err %ld\n",
710 PTR_ERR(qp_flow));
711 err = qp_flow ? PTR_ERR(qp_flow) : -EFAULT;
712 goto out_qp_grp_vf_unbind;
713 }
714
715 err = qp_grp_id_from_flow(qp_flow, &qp_grp->grp_id);
716 if (err)
717 goto out_release_flow;
718 qp_grp->ibqp.qp_num = qp_grp->grp_id;
719
720 usnic_ib_sysfs_qpn_add(qp_grp);
721
722 return qp_grp;
723
724out_release_flow:
725 release_and_remove_flow(qp_flow);
726out_qp_grp_vf_unbind:
727 qp_grp_and_vf_unbind(qp_grp);
728out_free_res:
729 free_qp_grp_res(qp_grp->res_chunk_list);
730out_free_qp_grp:
731 kfree(qp_grp);
732
733 return ERR_PTR(err);
734}
735
736void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp)
737{
738
739 WARN_ON(qp_grp->state != IB_QPS_RESET);
740 lockdep_assert_held(&qp_grp->vf->lock);
741
742 release_and_remove_all_flows(qp_grp);
743 usnic_ib_sysfs_qpn_remove(qp_grp);
744 qp_grp_and_vf_unbind(qp_grp);
745 free_qp_grp_res(qp_grp->res_chunk_list);
746 kfree(qp_grp);
747}
748
749struct usnic_vnic_res_chunk*
750usnic_ib_qp_grp_get_chunk(struct usnic_ib_qp_grp *qp_grp,
751 enum usnic_vnic_res_type res_type)
752{
753 int i;
754
755 for (i = 0; qp_grp->res_chunk_list[i]; i++) {
756 if (qp_grp->res_chunk_list[i]->type == res_type)
757 return qp_grp->res_chunk_list[i];
758 }
759
760 return ERR_PTR(-EINVAL);
761}
762
