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1/* QLogic qedr NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
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#include <net/ip.h>
33#include <net/ipv6.h>
34#include <net/udp.h>
35#include <net/addrconf.h>
36#include <net/route.h>
37#include <net/ip6_route.h>
38#include <net/flow.h>
39#include "qedr.h"
40#include "qedr_iw_cm.h"
41
42static inline void
43qedr_fill_sockaddr4(const struct qed_iwarp_cm_info *cm_info,
44 struct iw_cm_event *event)
45{
46 struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr;
47 struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr;
48
49 laddr->sin_family = AF_INET;
50 raddr->sin_family = AF_INET;
51
52 laddr->sin_port = htons(cm_info->local_port);
53 raddr->sin_port = htons(cm_info->remote_port);
54
55 laddr->sin_addr.s_addr = htonl(cm_info->local_ip[0]);
56 raddr->sin_addr.s_addr = htonl(cm_info->remote_ip[0]);
57}
58
59static inline void
60qedr_fill_sockaddr6(const struct qed_iwarp_cm_info *cm_info,
61 struct iw_cm_event *event)
62{
63 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr;
64 struct sockaddr_in6 *raddr6 =
65 (struct sockaddr_in6 *)&event->remote_addr;
66 int i;
67
68 laddr6->sin6_family = AF_INET6;
69 raddr6->sin6_family = AF_INET6;
70
71 laddr6->sin6_port = htons(cm_info->local_port);
72 raddr6->sin6_port = htons(cm_info->remote_port);
73
74 for (i = 0; i < 4; i++) {
75 laddr6->sin6_addr.in6_u.u6_addr32[i] =
76 htonl(cm_info->local_ip[i]);
77 raddr6->sin6_addr.in6_u.u6_addr32[i] =
78 htonl(cm_info->remote_ip[i]);
79 }
80}
81
82static void qedr_iw_free_qp(struct kref *ref)
83{
84 struct qedr_qp *qp = container_of(ref, struct qedr_qp, refcnt);
85
86 complete(&qp->qp_rel_comp);
87}
88
89static void
90qedr_iw_free_ep(struct kref *ref)
91{
92 struct qedr_iw_ep *ep = container_of(ref, struct qedr_iw_ep, refcnt);
93
94 if (ep->qp)
95 kref_put(&ep->qp->refcnt, qedr_iw_free_qp);
96
97 if (ep->cm_id)
98 ep->cm_id->rem_ref(ep->cm_id);
99
100 kfree(ep);
101}
102
103static void
104qedr_iw_mpa_request(void *context, struct qed_iwarp_cm_event_params *params)
105{
106 struct qedr_iw_listener *listener = (struct qedr_iw_listener *)context;
107 struct qedr_dev *dev = listener->dev;
108 struct iw_cm_event event;
109 struct qedr_iw_ep *ep;
110
111 ep = kzalloc(sizeof(*ep), GFP_ATOMIC);
112 if (!ep)
113 return;
114
115 ep->dev = dev;
116 ep->qed_context = params->ep_context;
117 kref_init(&ep->refcnt);
118
119 memset(&event, 0, sizeof(event));
120 event.event = IW_CM_EVENT_CONNECT_REQUEST;
121 event.status = params->status;
122
123 if (!IS_ENABLED(CONFIG_IPV6) ||
124 params->cm_info->ip_version == QED_TCP_IPV4)
125 qedr_fill_sockaddr4(params->cm_info, &event);
126 else
127 qedr_fill_sockaddr6(params->cm_info, &event);
128
129 event.provider_data = (void *)ep;
130 event.private_data = (void *)params->cm_info->private_data;
131 event.private_data_len = (u8)params->cm_info->private_data_len;
132 event.ord = params->cm_info->ord;
133 event.ird = params->cm_info->ird;
134
135 listener->cm_id->event_handler(listener->cm_id, &event);
136}
137
138static void
139qedr_iw_issue_event(void *context,
140 struct qed_iwarp_cm_event_params *params,
141 enum iw_cm_event_type event_type)
142{
143 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
144 struct iw_cm_event event;
145
146 memset(&event, 0, sizeof(event));
147 event.status = params->status;
148 event.event = event_type;
149
150 if (params->cm_info) {
151 event.ird = params->cm_info->ird;
152 event.ord = params->cm_info->ord;
153 /* Only connect_request and reply have valid private data
154 * the rest of the events this may be left overs from
155 * connection establishment. CONNECT_REQUEST is issued via
156 * qedr_iw_mpa_request
157 */
158 if (event_type == IW_CM_EVENT_CONNECT_REPLY) {
159 event.private_data_len =
160 params->cm_info->private_data_len;
161 event.private_data =
162 (void *)params->cm_info->private_data;
163 }
164 }
165
166 if (ep->cm_id)
167 ep->cm_id->event_handler(ep->cm_id, &event);
168}
169
170static void
171qedr_iw_close_event(void *context, struct qed_iwarp_cm_event_params *params)
172{
173 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
174
175 if (ep->cm_id)
176 qedr_iw_issue_event(context, params, IW_CM_EVENT_CLOSE);
177
178 kref_put(&ep->refcnt, qedr_iw_free_ep);
179}
180
181static void
182qedr_iw_qp_event(void *context,
183 struct qed_iwarp_cm_event_params *params,
184 enum ib_event_type ib_event, char *str)
185{
186 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
187 struct qedr_dev *dev = ep->dev;
188 struct ib_qp *ibqp = &ep->qp->ibqp;
189 struct ib_event event;
190
191 DP_NOTICE(dev, "QP error received: %s\n", str);
192
193 if (ibqp->event_handler) {
194 event.event = ib_event;
195 event.device = ibqp->device;
196 event.element.qp = ibqp;
197 ibqp->event_handler(&event, ibqp->qp_context);
198 }
199}
200
201struct qedr_discon_work {
202 struct work_struct work;
203 struct qedr_iw_ep *ep;
204 enum qed_iwarp_event_type event;
205 int status;
206};
207
208static void qedr_iw_disconnect_worker(struct work_struct *work)
209{
210 struct qedr_discon_work *dwork =
211 container_of(work, struct qedr_discon_work, work);
212 struct qed_rdma_modify_qp_in_params qp_params = { 0 };
213 struct qedr_iw_ep *ep = dwork->ep;
214 struct qedr_dev *dev = ep->dev;
215 struct qedr_qp *qp = ep->qp;
216 struct iw_cm_event event;
217
218 /* The qp won't be released until we release the ep.
219 * the ep's refcnt was increased before calling this
220 * function, therefore it is safe to access qp
221 */
222 if (test_and_set_bit(QEDR_IWARP_CM_WAIT_FOR_DISCONNECT,
223 &qp->iwarp_cm_flags))
224 goto out;
225
226 memset(&event, 0, sizeof(event));
227 event.status = dwork->status;
228 event.event = IW_CM_EVENT_DISCONNECT;
229
230 /* Success means graceful disconnect was requested. modifying
231 * to SQD is translated to graceful disconnect. O/w reset is sent
232 */
233 if (dwork->status)
234 qp_params.new_state = QED_ROCE_QP_STATE_ERR;
235 else
236 qp_params.new_state = QED_ROCE_QP_STATE_SQD;
237
238
239 if (ep->cm_id)
240 ep->cm_id->event_handler(ep->cm_id, &event);
241
242 SET_FIELD(qp_params.modify_flags,
243 QED_RDMA_MODIFY_QP_VALID_NEW_STATE, 1);
244
245 dev->ops->rdma_modify_qp(dev->rdma_ctx, qp->qed_qp, &qp_params);
246
247 complete(&ep->qp->iwarp_cm_comp);
248out:
249 kfree(dwork);
250 kref_put(&ep->refcnt, qedr_iw_free_ep);
251}
252
253static void
254qedr_iw_disconnect_event(void *context,
255 struct qed_iwarp_cm_event_params *params)
256{
257 struct qedr_discon_work *work;
258 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
259 struct qedr_dev *dev = ep->dev;
260
261 work = kzalloc(sizeof(*work), GFP_ATOMIC);
262 if (!work)
263 return;
264
265 /* We can't get a close event before disconnect, but since
266 * we're scheduling a work queue we need to make sure close
267 * won't delete the ep, so we increase the refcnt
268 */
269 kref_get(&ep->refcnt);
270
271 work->ep = ep;
272 work->event = params->event;
273 work->status = params->status;
274
275 INIT_WORK(&work->work, qedr_iw_disconnect_worker);
276 queue_work(dev->iwarp_wq, &work->work);
277}
278
279static void
280qedr_iw_passive_complete(void *context,
281 struct qed_iwarp_cm_event_params *params)
282{
283 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
284 struct qedr_dev *dev = ep->dev;
285
286 /* We will only reach the following state if MPA_REJECT was called on
287 * passive. In this case there will be no associated QP.
288 */
289 if ((params->status == -ECONNREFUSED) && (!ep->qp)) {
290 DP_DEBUG(dev, QEDR_MSG_IWARP,
291 "PASSIVE connection refused releasing ep...\n");
292 kref_put(&ep->refcnt, qedr_iw_free_ep);
293 return;
294 }
295
296 complete(&ep->qp->iwarp_cm_comp);
297 qedr_iw_issue_event(context, params, IW_CM_EVENT_ESTABLISHED);
298
299 if (params->status < 0)
300 qedr_iw_close_event(context, params);
301}
302
303static void
304qedr_iw_active_complete(void *context,
305 struct qed_iwarp_cm_event_params *params)
306{
307 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
308
309 complete(&ep->qp->iwarp_cm_comp);
310 qedr_iw_issue_event(context, params, IW_CM_EVENT_CONNECT_REPLY);
311
312 if (params->status < 0)
313 kref_put(&ep->refcnt, qedr_iw_free_ep);
314}
315
316static int
317qedr_iw_mpa_reply(void *context, struct qed_iwarp_cm_event_params *params)
318{
319 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
320 struct qedr_dev *dev = ep->dev;
321 struct qed_iwarp_send_rtr_in rtr_in;
322
323 rtr_in.ep_context = params->ep_context;
324
325 return dev->ops->iwarp_send_rtr(dev->rdma_ctx, &rtr_in);
326}
327
328static int
329qedr_iw_event_handler(void *context, struct qed_iwarp_cm_event_params *params)
330{
331 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
332 struct qedr_dev *dev = ep->dev;
333
334 switch (params->event) {
335 case QED_IWARP_EVENT_MPA_REQUEST:
336 qedr_iw_mpa_request(context, params);
337 break;
338 case QED_IWARP_EVENT_ACTIVE_MPA_REPLY:
339 qedr_iw_mpa_reply(context, params);
340 break;
341 case QED_IWARP_EVENT_PASSIVE_COMPLETE:
342 qedr_iw_passive_complete(context, params);
343 break;
344 case QED_IWARP_EVENT_ACTIVE_COMPLETE:
345 qedr_iw_active_complete(context, params);
346 break;
347 case QED_IWARP_EVENT_DISCONNECT:
348 qedr_iw_disconnect_event(context, params);
349 break;
350 case QED_IWARP_EVENT_CLOSE:
351 qedr_iw_close_event(context, params);
352 break;
353 case QED_IWARP_EVENT_RQ_EMPTY:
354 qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
355 "QED_IWARP_EVENT_RQ_EMPTY");
356 break;
357 case QED_IWARP_EVENT_IRQ_FULL:
358 qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
359 "QED_IWARP_EVENT_IRQ_FULL");
360 break;
361 case QED_IWARP_EVENT_LLP_TIMEOUT:
362 qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
363 "QED_IWARP_EVENT_LLP_TIMEOUT");
364 break;
365 case QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR:
366 qedr_iw_qp_event(context, params, IB_EVENT_QP_ACCESS_ERR,
367 "QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR");
368 break;
369 case QED_IWARP_EVENT_CQ_OVERFLOW:
370 qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
371 "QED_IWARP_EVENT_CQ_OVERFLOW");
372 break;
373 case QED_IWARP_EVENT_QP_CATASTROPHIC:
374 qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
375 "QED_IWARP_EVENT_QP_CATASTROPHIC");
376 break;
377 case QED_IWARP_EVENT_LOCAL_ACCESS_ERROR:
378 qedr_iw_qp_event(context, params, IB_EVENT_QP_ACCESS_ERR,
379 "QED_IWARP_EVENT_LOCAL_ACCESS_ERROR");
380 break;
381 case QED_IWARP_EVENT_REMOTE_OPERATION_ERROR:
382 qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
383 "QED_IWARP_EVENT_REMOTE_OPERATION_ERROR");
384 break;
385 case QED_IWARP_EVENT_TERMINATE_RECEIVED:
386 DP_NOTICE(dev, "Got terminate message\n");
387 break;
388 default:
389 DP_NOTICE(dev, "Unknown event received %d\n", params->event);
390 break;
391 }
392 return 0;
393}
394
395static u16 qedr_iw_get_vlan_ipv4(struct qedr_dev *dev, u32 *addr)
396{
397 struct net_device *ndev;
398 u16 vlan_id = 0;
399
400 ndev = ip_dev_find(&init_net, htonl(addr[0]));
401
402 if (ndev) {
403 vlan_id = rdma_vlan_dev_vlan_id(ndev);
404 dev_put(ndev);
405 }
406 if (vlan_id == 0xffff)
407 vlan_id = 0;
408 return vlan_id;
409}
410
411static u16 qedr_iw_get_vlan_ipv6(u32 *addr)
412{
413 struct net_device *ndev = NULL;
414 struct in6_addr laddr6;
415 u16 vlan_id = 0;
416 int i;
417
418 if (!IS_ENABLED(CONFIG_IPV6))
419 return vlan_id;
420
421 for (i = 0; i < 4; i++)
422 laddr6.in6_u.u6_addr32[i] = htonl(addr[i]);
423
424 rcu_read_lock();
425 for_each_netdev_rcu(&init_net, ndev) {
426 if (ipv6_chk_addr(&init_net, &laddr6, ndev, 1)) {
427 vlan_id = rdma_vlan_dev_vlan_id(ndev);
428 break;
429 }
430 }
431
432 rcu_read_unlock();
433 if (vlan_id == 0xffff)
434 vlan_id = 0;
435
436 return vlan_id;
437}
438
439static int
440qedr_addr4_resolve(struct qedr_dev *dev,
441 struct sockaddr_in *src_in,
442 struct sockaddr_in *dst_in, u8 *dst_mac)
443{
444 __be32 src_ip = src_in->sin_addr.s_addr;
445 __be32 dst_ip = dst_in->sin_addr.s_addr;
446 struct neighbour *neigh = NULL;
447 struct rtable *rt = NULL;
448 int rc = 0;
449
450 rt = ip_route_output(&init_net, dst_ip, src_ip, 0, 0);
451 if (IS_ERR(rt)) {
452 DP_ERR(dev, "ip_route_output returned error\n");
453 return -EINVAL;
454 }
455
456 neigh = dst_neigh_lookup(&rt->dst, &dst_ip);
457
458 if (neigh) {
459 rcu_read_lock();
460 if (neigh->nud_state & NUD_VALID) {
461 ether_addr_copy(dst_mac, neigh->ha);
462 DP_DEBUG(dev, QEDR_MSG_QP, "mac_addr=[%pM]\n", dst_mac);
463 } else {
464 neigh_event_send(neigh, NULL);
465 }
466 rcu_read_unlock();
467 neigh_release(neigh);
468 }
469
470 ip_rt_put(rt);
471
472 return rc;
473}
474
475static int
476qedr_addr6_resolve(struct qedr_dev *dev,
477 struct sockaddr_in6 *src_in,
478 struct sockaddr_in6 *dst_in, u8 *dst_mac)
479{
480 struct neighbour *neigh = NULL;
481 struct dst_entry *dst;
482 struct flowi6 fl6;
483 int rc = 0;
484
485 memset(&fl6, 0, sizeof(fl6));
486 fl6.daddr = dst_in->sin6_addr;
487 fl6.saddr = src_in->sin6_addr;
488
489 dst = ip6_route_output(&init_net, NULL, &fl6);
490
491 if ((!dst) || dst->error) {
492 if (dst) {
493 DP_ERR(dev,
494 "ip6_route_output returned dst->error = %d\n",
495 dst->error);
496 dst_release(dst);
497 }
498 return -EINVAL;
499 }
500 neigh = dst_neigh_lookup(dst, &fl6.daddr);
501 if (neigh) {
502 rcu_read_lock();
503 if (neigh->nud_state & NUD_VALID) {
504 ether_addr_copy(dst_mac, neigh->ha);
505 DP_DEBUG(dev, QEDR_MSG_QP, "mac_addr=[%pM]\n", dst_mac);
506 } else {
507 neigh_event_send(neigh, NULL);
508 }
509 rcu_read_unlock();
510 neigh_release(neigh);
511 }
512
513 dst_release(dst);
514
515 return rc;
516}
517
518static struct qedr_qp *qedr_iw_load_qp(struct qedr_dev *dev, u32 qpn)
519{
520 struct qedr_qp *qp;
521
522 xa_lock(&dev->qps);
523 qp = xa_load(&dev->qps, qpn);
524 if (qp)
525 kref_get(&qp->refcnt);
526 xa_unlock(&dev->qps);
527
528 return qp;
529}
530
531int qedr_iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
532{
533 struct qedr_dev *dev = get_qedr_dev(cm_id->device);
534 struct qed_iwarp_connect_out out_params;
535 struct qed_iwarp_connect_in in_params;
536 struct qed_iwarp_cm_info *cm_info;
537 struct sockaddr_in6 *laddr6;
538 struct sockaddr_in6 *raddr6;
539 struct sockaddr_in *laddr;
540 struct sockaddr_in *raddr;
541 struct qedr_iw_ep *ep;
542 struct qedr_qp *qp;
543 int rc = 0;
544 int i;
545
546 laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
547 raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
548 laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
549 raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
550
551 DP_DEBUG(dev, QEDR_MSG_IWARP, "MAPPED %d %d\n",
552 ntohs(((struct sockaddr_in *)&cm_id->remote_addr)->sin_port),
553 ntohs(raddr->sin_port));
554
555 DP_DEBUG(dev, QEDR_MSG_IWARP,
556 "Connect source address: %pISpc, remote address: %pISpc\n",
557 &cm_id->local_addr, &cm_id->remote_addr);
558
559 if (!laddr->sin_port || !raddr->sin_port)
560 return -EINVAL;
561
562 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
563 if (!ep)
564 return -ENOMEM;
565
566 ep->dev = dev;
567 kref_init(&ep->refcnt);
568
569 qp = qedr_iw_load_qp(dev, conn_param->qpn);
570 if (!qp) {
571 rc = -EINVAL;
572 goto err;
573 }
574
575 ep->qp = qp;
576 cm_id->add_ref(cm_id);
577 ep->cm_id = cm_id;
578
579 in_params.event_cb = qedr_iw_event_handler;
580 in_params.cb_context = ep;
581
582 cm_info = &in_params.cm_info;
583 memset(cm_info->local_ip, 0, sizeof(cm_info->local_ip));
584 memset(cm_info->remote_ip, 0, sizeof(cm_info->remote_ip));
585
586 if (!IS_ENABLED(CONFIG_IPV6) ||
587 cm_id->remote_addr.ss_family == AF_INET) {
588 cm_info->ip_version = QED_TCP_IPV4;
589
590 cm_info->remote_ip[0] = ntohl(raddr->sin_addr.s_addr);
591 cm_info->local_ip[0] = ntohl(laddr->sin_addr.s_addr);
592 cm_info->remote_port = ntohs(raddr->sin_port);
593 cm_info->local_port = ntohs(laddr->sin_port);
594 cm_info->vlan = qedr_iw_get_vlan_ipv4(dev, cm_info->local_ip);
595
596 rc = qedr_addr4_resolve(dev, laddr, raddr,
597 (u8 *)in_params.remote_mac_addr);
598
599 in_params.mss = dev->iwarp_max_mtu -
600 (sizeof(struct iphdr) + sizeof(struct tcphdr));
601
602 } else {
603 in_params.cm_info.ip_version = QED_TCP_IPV6;
604
605 for (i = 0; i < 4; i++) {
606 cm_info->remote_ip[i] =
607 ntohl(raddr6->sin6_addr.in6_u.u6_addr32[i]);
608 cm_info->local_ip[i] =
609 ntohl(laddr6->sin6_addr.in6_u.u6_addr32[i]);
610 }
611
612 cm_info->local_port = ntohs(laddr6->sin6_port);
613 cm_info->remote_port = ntohs(raddr6->sin6_port);
614
615 in_params.mss = dev->iwarp_max_mtu -
616 (sizeof(struct ipv6hdr) + sizeof(struct tcphdr));
617
618 cm_info->vlan = qedr_iw_get_vlan_ipv6(cm_info->local_ip);
619
620 rc = qedr_addr6_resolve(dev, laddr6, raddr6,
621 (u8 *)in_params.remote_mac_addr);
622 }
623 if (rc)
624 goto err;
625
626 DP_DEBUG(dev, QEDR_MSG_IWARP,
627 "ord = %d ird=%d private_data=%p private_data_len=%d rq_psn=%d\n",
628 conn_param->ord, conn_param->ird, conn_param->private_data,
629 conn_param->private_data_len, qp->rq_psn);
630
631 cm_info->ord = conn_param->ord;
632 cm_info->ird = conn_param->ird;
633 cm_info->private_data = conn_param->private_data;
634 cm_info->private_data_len = conn_param->private_data_len;
635 in_params.qp = qp->qed_qp;
636 memcpy(in_params.local_mac_addr, dev->ndev->dev_addr, ETH_ALEN);
637
638 if (test_and_set_bit(QEDR_IWARP_CM_WAIT_FOR_CONNECT,
639 &qp->iwarp_cm_flags)) {
640 rc = -ENODEV;
641 goto err; /* QP already being destroyed */
642 }
643
644 rc = dev->ops->iwarp_connect(dev->rdma_ctx, &in_params, &out_params);
645 if (rc) {
646 complete(&qp->iwarp_cm_comp);
647 goto err;
648 }
649
650 return rc;
651
652err:
653 kref_put(&ep->refcnt, qedr_iw_free_ep);
654 return rc;
655}
656
657int qedr_iw_create_listen(struct iw_cm_id *cm_id, int backlog)
658{
659 struct qedr_dev *dev = get_qedr_dev(cm_id->device);
660 struct qedr_iw_listener *listener;
661 struct qed_iwarp_listen_in iparams;
662 struct qed_iwarp_listen_out oparams;
663 struct sockaddr_in *laddr;
664 struct sockaddr_in6 *laddr6;
665 int rc;
666 int i;
667
668 laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
669 laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
670
671 DP_DEBUG(dev, QEDR_MSG_IWARP,
672 "Create Listener address: %pISpc\n", &cm_id->local_addr);
673
674 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
675 if (!listener)
676 return -ENOMEM;
677
678 listener->dev = dev;
679 cm_id->add_ref(cm_id);
680 listener->cm_id = cm_id;
681 listener->backlog = backlog;
682
683 iparams.cb_context = listener;
684 iparams.event_cb = qedr_iw_event_handler;
685 iparams.max_backlog = backlog;
686
687 if (!IS_ENABLED(CONFIG_IPV6) ||
688 cm_id->local_addr.ss_family == AF_INET) {
689 iparams.ip_version = QED_TCP_IPV4;
690 memset(iparams.ip_addr, 0, sizeof(iparams.ip_addr));
691
692 iparams.ip_addr[0] = ntohl(laddr->sin_addr.s_addr);
693 iparams.port = ntohs(laddr->sin_port);
694 iparams.vlan = qedr_iw_get_vlan_ipv4(dev, iparams.ip_addr);
695 } else {
696 iparams.ip_version = QED_TCP_IPV6;
697
698 for (i = 0; i < 4; i++) {
699 iparams.ip_addr[i] =
700 ntohl(laddr6->sin6_addr.in6_u.u6_addr32[i]);
701 }
702
703 iparams.port = ntohs(laddr6->sin6_port);
704
705 iparams.vlan = qedr_iw_get_vlan_ipv6(iparams.ip_addr);
706 }
707 rc = dev->ops->iwarp_create_listen(dev->rdma_ctx, &iparams, &oparams);
708 if (rc)
709 goto err;
710
711 listener->qed_handle = oparams.handle;
712 cm_id->provider_data = listener;
713 return rc;
714
715err:
716 cm_id->rem_ref(cm_id);
717 kfree(listener);
718 return rc;
719}
720
721int qedr_iw_destroy_listen(struct iw_cm_id *cm_id)
722{
723 struct qedr_iw_listener *listener = cm_id->provider_data;
724 struct qedr_dev *dev = get_qedr_dev(cm_id->device);
725 int rc = 0;
726
727 if (listener->qed_handle)
728 rc = dev->ops->iwarp_destroy_listen(dev->rdma_ctx,
729 listener->qed_handle);
730
731 cm_id->rem_ref(cm_id);
732 kfree(listener);
733 return rc;
734}
735
736int qedr_iw_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
737{
738 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)cm_id->provider_data;
739 struct qedr_dev *dev = ep->dev;
740 struct qedr_qp *qp;
741 struct qed_iwarp_accept_in params;
742 int rc;
743
744 DP_DEBUG(dev, QEDR_MSG_IWARP, "Accept on qpid=%d\n", conn_param->qpn);
745
746 qp = qedr_iw_load_qp(dev, conn_param->qpn);
747 if (!qp) {
748 DP_ERR(dev, "Invalid QP number %d\n", conn_param->qpn);
749 return -EINVAL;
750 }
751
752 ep->qp = qp;
753 cm_id->add_ref(cm_id);
754 ep->cm_id = cm_id;
755
756 params.ep_context = ep->qed_context;
757 params.cb_context = ep;
758 params.qp = ep->qp->qed_qp;
759 params.private_data = conn_param->private_data;
760 params.private_data_len = conn_param->private_data_len;
761 params.ird = conn_param->ird;
762 params.ord = conn_param->ord;
763
764 if (test_and_set_bit(QEDR_IWARP_CM_WAIT_FOR_CONNECT,
765 &qp->iwarp_cm_flags)) {
766 rc = -EINVAL;
767 goto err; /* QP already destroyed */
768 }
769
770 rc = dev->ops->iwarp_accept(dev->rdma_ctx, ¶ms);
771 if (rc) {
772 complete(&qp->iwarp_cm_comp);
773 goto err;
774 }
775
776 return rc;
777
778err:
779 kref_put(&ep->refcnt, qedr_iw_free_ep);
780
781 return rc;
782}
783
784int qedr_iw_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
785{
786 struct qedr_iw_ep *ep = (struct qedr_iw_ep *)cm_id->provider_data;
787 struct qedr_dev *dev = ep->dev;
788 struct qed_iwarp_reject_in params;
789
790 params.ep_context = ep->qed_context;
791 params.cb_context = ep;
792 params.private_data = pdata;
793 params.private_data_len = pdata_len;
794 ep->qp = NULL;
795
796 return dev->ops->iwarp_reject(dev->rdma_ctx, ¶ms);
797}
798
799void qedr_iw_qp_add_ref(struct ib_qp *ibqp)
800{
801 struct qedr_qp *qp = get_qedr_qp(ibqp);
802
803 kref_get(&qp->refcnt);
804}
805
806void qedr_iw_qp_rem_ref(struct ib_qp *ibqp)
807{
808 struct qedr_qp *qp = get_qedr_qp(ibqp);
809
810 kref_put(&qp->refcnt, qedr_iw_free_qp);
811}
812
813struct ib_qp *qedr_iw_get_qp(struct ib_device *ibdev, int qpn)
814{
815 struct qedr_dev *dev = get_qedr_dev(ibdev);
816
817 return xa_load(&dev->qps, qpn);
818}