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1/*******************************************************************************
2*
3* Copyright (c) 2015-2016 Intel Corporation. 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* OpenFabrics.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
35#include <linux/module.h>
36#include <linux/moduleparam.h>
37#include <linux/netdevice.h>
38#include <linux/etherdevice.h>
39#include <linux/ethtool.h>
40#include <linux/mii.h>
41#include <linux/if_vlan.h>
42#include <linux/crc32.h>
43#include <linux/in.h>
44#include <linux/ip.h>
45#include <linux/tcp.h>
46#include <linux/init.h>
47#include <linux/io.h>
48#include <asm/irq.h>
49#include <asm/byteorder.h>
50#include <net/netevent.h>
51#include <net/neighbour.h>
52#include "i40iw.h"
53
54/**
55 * i40iw_arp_table - manage arp table
56 * @iwdev: iwarp device
57 * @ip_addr: ip address for device
58 * @mac_addr: mac address ptr
59 * @action: modify, delete or add
60 */
61int i40iw_arp_table(struct i40iw_device *iwdev,
62 u32 *ip_addr,
63 bool ipv4,
64 u8 *mac_addr,
65 u32 action)
66{
67 int arp_index;
68 int err;
69 u32 ip[4];
70
71 if (ipv4) {
72 memset(ip, 0, sizeof(ip));
73 ip[0] = *ip_addr;
74 } else {
75 memcpy(ip, ip_addr, sizeof(ip));
76 }
77
78 for (arp_index = 0; (u32)arp_index < iwdev->arp_table_size; arp_index++)
79 if (memcmp(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)) == 0)
80 break;
81 switch (action) {
82 case I40IW_ARP_ADD:
83 if (arp_index != iwdev->arp_table_size)
84 return -1;
85
86 arp_index = 0;
87 err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps,
88 iwdev->arp_table_size,
89 (u32 *)&arp_index,
90 &iwdev->next_arp_index);
91
92 if (err)
93 return err;
94
95 memcpy(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip));
96 ether_addr_copy(iwdev->arp_table[arp_index].mac_addr, mac_addr);
97 break;
98 case I40IW_ARP_RESOLVE:
99 if (arp_index == iwdev->arp_table_size)
100 return -1;
101 break;
102 case I40IW_ARP_DELETE:
103 if (arp_index == iwdev->arp_table_size)
104 return -1;
105 memset(iwdev->arp_table[arp_index].ip_addr, 0,
106 sizeof(iwdev->arp_table[arp_index].ip_addr));
107 eth_zero_addr(iwdev->arp_table[arp_index].mac_addr);
108 i40iw_free_resource(iwdev, iwdev->allocated_arps, arp_index);
109 break;
110 default:
111 return -1;
112 }
113 return arp_index;
114}
115
116/**
117 * i40iw_wr32 - write 32 bits to hw register
118 * @hw: hardware information including registers
119 * @reg: register offset
120 * @value: vvalue to write to register
121 */
122inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value)
123{
124 writel(value, hw->hw_addr + reg);
125}
126
127/**
128 * i40iw_rd32 - read a 32 bit hw register
129 * @hw: hardware information including registers
130 * @reg: register offset
131 *
132 * Return value of register content
133 */
134inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
135{
136 return readl(hw->hw_addr + reg);
137}
138
139/**
140 * i40iw_inetaddr_event - system notifier for ipv4 addr events
141 * @notfier: not used
142 * @event: event for notifier
143 * @ptr: if address
144 */
145int i40iw_inetaddr_event(struct notifier_block *notifier,
146 unsigned long event,
147 void *ptr)
148{
149 struct in_ifaddr *ifa = ptr;
150 struct net_device *event_netdev = ifa->ifa_dev->dev;
151 struct net_device *netdev;
152 struct net_device *upper_dev;
153 struct i40iw_device *iwdev;
154 struct i40iw_handler *hdl;
155 u32 local_ipaddr;
156 u32 action = I40IW_ARP_ADD;
157
158 hdl = i40iw_find_netdev(event_netdev);
159 if (!hdl)
160 return NOTIFY_DONE;
161
162 iwdev = &hdl->device;
163 if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
164 return NOTIFY_DONE;
165
166 netdev = iwdev->ldev->netdev;
167 upper_dev = netdev_master_upper_dev_get(netdev);
168 if (netdev != event_netdev)
169 return NOTIFY_DONE;
170
171 if (upper_dev) {
172 struct in_device *in;
173
174 rcu_read_lock();
175 in = __in_dev_get_rcu(upper_dev);
176
177 local_ipaddr = 0;
178 if (in) {
179 struct in_ifaddr *ifa;
180
181 ifa = rcu_dereference(in->ifa_list);
182 if (ifa)
183 local_ipaddr = ntohl(ifa->ifa_address);
184 }
185
186 rcu_read_unlock();
187 } else {
188 local_ipaddr = ntohl(ifa->ifa_address);
189 }
190 switch (event) {
191 case NETDEV_DOWN:
192 action = I40IW_ARP_DELETE;
193 fallthrough;
194 case NETDEV_UP:
195 case NETDEV_CHANGEADDR:
196
197 /* Just skip if no need to handle ARP cache */
198 if (!local_ipaddr)
199 break;
200
201 i40iw_manage_arp_cache(iwdev,
202 netdev->dev_addr,
203 &local_ipaddr,
204 true,
205 action);
206 i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
207 (action == I40IW_ARP_ADD) ? true : false);
208 break;
209 default:
210 break;
211 }
212 return NOTIFY_DONE;
213}
214
215/**
216 * i40iw_inet6addr_event - system notifier for ipv6 addr events
217 * @notfier: not used
218 * @event: event for notifier
219 * @ptr: if address
220 */
221int i40iw_inet6addr_event(struct notifier_block *notifier,
222 unsigned long event,
223 void *ptr)
224{
225 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
226 struct net_device *event_netdev = ifa->idev->dev;
227 struct net_device *netdev;
228 struct i40iw_device *iwdev;
229 struct i40iw_handler *hdl;
230 u32 local_ipaddr6[4];
231 u32 action = I40IW_ARP_ADD;
232
233 hdl = i40iw_find_netdev(event_netdev);
234 if (!hdl)
235 return NOTIFY_DONE;
236
237 iwdev = &hdl->device;
238 if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
239 return NOTIFY_DONE;
240
241 netdev = iwdev->ldev->netdev;
242 if (netdev != event_netdev)
243 return NOTIFY_DONE;
244
245 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
246 switch (event) {
247 case NETDEV_DOWN:
248 action = I40IW_ARP_DELETE;
249 fallthrough;
250 case NETDEV_UP:
251 case NETDEV_CHANGEADDR:
252 i40iw_manage_arp_cache(iwdev,
253 netdev->dev_addr,
254 local_ipaddr6,
255 false,
256 action);
257 i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
258 (action == I40IW_ARP_ADD) ? true : false);
259 break;
260 default:
261 break;
262 }
263 return NOTIFY_DONE;
264}
265
266/**
267 * i40iw_net_event - system notifier for netevents
268 * @notfier: not used
269 * @event: event for notifier
270 * @ptr: neighbor
271 */
272int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
273{
274 struct neighbour *neigh = ptr;
275 struct i40iw_device *iwdev;
276 struct i40iw_handler *iwhdl;
277 __be32 *p;
278 u32 local_ipaddr[4];
279
280 switch (event) {
281 case NETEVENT_NEIGH_UPDATE:
282 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
283 if (!iwhdl)
284 return NOTIFY_DONE;
285 iwdev = &iwhdl->device;
286 if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
287 return NOTIFY_DONE;
288 p = (__be32 *)neigh->primary_key;
289 i40iw_copy_ip_ntohl(local_ipaddr, p);
290 if (neigh->nud_state & NUD_VALID) {
291 i40iw_manage_arp_cache(iwdev,
292 neigh->ha,
293 local_ipaddr,
294 false,
295 I40IW_ARP_ADD);
296
297 } else {
298 i40iw_manage_arp_cache(iwdev,
299 neigh->ha,
300 local_ipaddr,
301 false,
302 I40IW_ARP_DELETE);
303 }
304 break;
305 default:
306 break;
307 }
308 return NOTIFY_DONE;
309}
310
311/**
312 * i40iw_netdevice_event - system notifier for netdev events
313 * @notfier: not used
314 * @event: event for notifier
315 * @ptr: netdev
316 */
317int i40iw_netdevice_event(struct notifier_block *notifier,
318 unsigned long event,
319 void *ptr)
320{
321 struct net_device *event_netdev;
322 struct net_device *netdev;
323 struct i40iw_device *iwdev;
324 struct i40iw_handler *hdl;
325
326 event_netdev = netdev_notifier_info_to_dev(ptr);
327
328 hdl = i40iw_find_netdev(event_netdev);
329 if (!hdl)
330 return NOTIFY_DONE;
331
332 iwdev = &hdl->device;
333 if (iwdev->init_state < RDMA_DEV_REGISTERED || iwdev->closing)
334 return NOTIFY_DONE;
335
336 netdev = iwdev->ldev->netdev;
337 if (netdev != event_netdev)
338 return NOTIFY_DONE;
339
340 iwdev->iw_status = 1;
341
342 switch (event) {
343 case NETDEV_DOWN:
344 iwdev->iw_status = 0;
345 fallthrough;
346 case NETDEV_UP:
347 i40iw_port_ibevent(iwdev);
348 break;
349 default:
350 break;
351 }
352 return NOTIFY_DONE;
353}
354
355/**
356 * i40iw_get_cqp_request - get cqp struct
357 * @cqp: device cqp ptr
358 * @wait: cqp to be used in wait mode
359 */
360struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
361{
362 struct i40iw_cqp_request *cqp_request = NULL;
363 unsigned long flags;
364
365 spin_lock_irqsave(&cqp->req_lock, flags);
366 if (!list_empty(&cqp->cqp_avail_reqs)) {
367 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
368 struct i40iw_cqp_request, list);
369 list_del_init(&cqp_request->list);
370 }
371 spin_unlock_irqrestore(&cqp->req_lock, flags);
372 if (!cqp_request) {
373 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
374 if (cqp_request) {
375 cqp_request->dynamic = true;
376 INIT_LIST_HEAD(&cqp_request->list);
377 init_waitqueue_head(&cqp_request->waitq);
378 }
379 }
380 if (!cqp_request) {
381 i40iw_pr_err("CQP Request Fail: No Memory");
382 return NULL;
383 }
384
385 if (wait) {
386 atomic_set(&cqp_request->refcount, 2);
387 cqp_request->waiting = true;
388 } else {
389 atomic_set(&cqp_request->refcount, 1);
390 }
391 return cqp_request;
392}
393
394/**
395 * i40iw_free_cqp_request - free cqp request
396 * @cqp: cqp ptr
397 * @cqp_request: to be put back in cqp list
398 */
399void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
400{
401 struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
402 unsigned long flags;
403
404 if (cqp_request->dynamic) {
405 kfree(cqp_request);
406 } else {
407 cqp_request->request_done = false;
408 cqp_request->callback_fcn = NULL;
409 cqp_request->waiting = false;
410
411 spin_lock_irqsave(&cqp->req_lock, flags);
412 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
413 spin_unlock_irqrestore(&cqp->req_lock, flags);
414 }
415 wake_up(&iwdev->close_wq);
416}
417
418/**
419 * i40iw_put_cqp_request - dec ref count and free if 0
420 * @cqp: cqp ptr
421 * @cqp_request: to be put back in cqp list
422 */
423void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
424 struct i40iw_cqp_request *cqp_request)
425{
426 if (atomic_dec_and_test(&cqp_request->refcount))
427 i40iw_free_cqp_request(cqp, cqp_request);
428}
429
430/**
431 * i40iw_free_pending_cqp_request -free pending cqp request objs
432 * @cqp: cqp ptr
433 * @cqp_request: to be put back in cqp list
434 */
435static void i40iw_free_pending_cqp_request(struct i40iw_cqp *cqp,
436 struct i40iw_cqp_request *cqp_request)
437{
438 struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
439
440 if (cqp_request->waiting) {
441 cqp_request->compl_info.error = true;
442 cqp_request->request_done = true;
443 wake_up(&cqp_request->waitq);
444 }
445 i40iw_put_cqp_request(cqp, cqp_request);
446 wait_event_timeout(iwdev->close_wq,
447 !atomic_read(&cqp_request->refcount),
448 1000);
449}
450
451/**
452 * i40iw_cleanup_pending_cqp_op - clean-up cqp with no completions
453 * @iwdev: iwarp device
454 */
455void i40iw_cleanup_pending_cqp_op(struct i40iw_device *iwdev)
456{
457 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
458 struct i40iw_cqp *cqp = &iwdev->cqp;
459 struct i40iw_cqp_request *cqp_request = NULL;
460 struct cqp_commands_info *pcmdinfo = NULL;
461 u32 i, pending_work, wqe_idx;
462
463 pending_work = I40IW_RING_WORK_AVAILABLE(cqp->sc_cqp.sq_ring);
464 wqe_idx = I40IW_RING_GETCURRENT_TAIL(cqp->sc_cqp.sq_ring);
465 for (i = 0; i < pending_work; i++) {
466 cqp_request = (struct i40iw_cqp_request *)(unsigned long)cqp->scratch_array[wqe_idx];
467 if (cqp_request)
468 i40iw_free_pending_cqp_request(cqp, cqp_request);
469 wqe_idx = (wqe_idx + 1) % I40IW_RING_GETSIZE(cqp->sc_cqp.sq_ring);
470 }
471
472 while (!list_empty(&dev->cqp_cmd_head)) {
473 pcmdinfo = (struct cqp_commands_info *)i40iw_remove_head(&dev->cqp_cmd_head);
474 cqp_request = container_of(pcmdinfo, struct i40iw_cqp_request, info);
475 if (cqp_request)
476 i40iw_free_pending_cqp_request(cqp, cqp_request);
477 }
478}
479
480/**
481 * i40iw_free_qp - callback after destroy cqp completes
482 * @cqp_request: cqp request for destroy qp
483 * @num: not used
484 */
485static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
486{
487 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
488 struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
489 struct i40iw_device *iwdev;
490 u32 qp_num = iwqp->ibqp.qp_num;
491
492 iwdev = iwqp->iwdev;
493
494 i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
495 i40iw_free_qp_resources(iwdev, iwqp, qp_num);
496 i40iw_rem_devusecount(iwdev);
497}
498
499/**
500 * i40iw_wait_event - wait for completion
501 * @iwdev: iwarp device
502 * @cqp_request: cqp request to wait
503 */
504static int i40iw_wait_event(struct i40iw_device *iwdev,
505 struct i40iw_cqp_request *cqp_request)
506{
507 struct cqp_commands_info *info = &cqp_request->info;
508 struct i40iw_cqp *iwcqp = &iwdev->cqp;
509 struct i40iw_cqp_timeout cqp_timeout;
510 bool cqp_error = false;
511 int err_code = 0;
512 memset(&cqp_timeout, 0, sizeof(cqp_timeout));
513 cqp_timeout.compl_cqp_cmds = iwdev->sc_dev.cqp_cmd_stats[OP_COMPLETED_COMMANDS];
514 do {
515 if (wait_event_timeout(cqp_request->waitq,
516 cqp_request->request_done, CQP_COMPL_WAIT_TIME))
517 break;
518
519 i40iw_check_cqp_progress(&cqp_timeout, &iwdev->sc_dev);
520
521 if (cqp_timeout.count < CQP_TIMEOUT_THRESHOLD)
522 continue;
523
524 i40iw_pr_err("error cqp command 0x%x timed out", info->cqp_cmd);
525 err_code = -ETIME;
526 if (!iwdev->reset) {
527 iwdev->reset = true;
528 i40iw_request_reset(iwdev);
529 }
530 goto done;
531 } while (1);
532 cqp_error = cqp_request->compl_info.error;
533 if (cqp_error) {
534 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
535 info->cqp_cmd, cqp_request->compl_info.maj_err_code,
536 cqp_request->compl_info.min_err_code);
537 err_code = -EPROTO;
538 goto done;
539 }
540done:
541 i40iw_put_cqp_request(iwcqp, cqp_request);
542 return err_code;
543}
544
545/**
546 * i40iw_handle_cqp_op - process cqp command
547 * @iwdev: iwarp device
548 * @cqp_request: cqp request to process
549 */
550enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
551 struct i40iw_cqp_request
552 *cqp_request)
553{
554 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
555 enum i40iw_status_code status;
556 struct cqp_commands_info *info = &cqp_request->info;
557 int err_code = 0;
558
559 if (iwdev->reset) {
560 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
561 return I40IW_ERR_CQP_COMPL_ERROR;
562 }
563
564 status = i40iw_process_cqp_cmd(dev, info);
565 if (status) {
566 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
567 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
568 return status;
569 }
570 if (cqp_request->waiting)
571 err_code = i40iw_wait_event(iwdev, cqp_request);
572 if (err_code)
573 status = I40IW_ERR_CQP_COMPL_ERROR;
574 return status;
575}
576
577/**
578 * i40iw_add_devusecount - add dev refcount
579 * @iwdev: dev for refcount
580 */
581void i40iw_add_devusecount(struct i40iw_device *iwdev)
582{
583 atomic64_inc(&iwdev->use_count);
584}
585
586/**
587 * i40iw_rem_devusecount - decrement refcount for dev
588 * @iwdev: device
589 */
590void i40iw_rem_devusecount(struct i40iw_device *iwdev)
591{
592 if (!atomic64_dec_and_test(&iwdev->use_count))
593 return;
594 wake_up(&iwdev->close_wq);
595}
596
597/**
598 * i40iw_add_pdusecount - add pd refcount
599 * @iwpd: pd for refcount
600 */
601void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
602{
603 atomic_inc(&iwpd->usecount);
604}
605
606/**
607 * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
608 * @iwpd: pd for refcount
609 * @iwdev: iwarp device
610 */
611void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
612{
613 if (!atomic_dec_and_test(&iwpd->usecount))
614 return;
615 i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
616}
617
618/**
619 * i40iw_add_ref - add refcount for qp
620 * @ibqp: iqarp qp
621 */
622void i40iw_add_ref(struct ib_qp *ibqp)
623{
624 struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
625
626 atomic_inc(&iwqp->refcount);
627}
628
629/**
630 * i40iw_rem_ref - rem refcount for qp and free if 0
631 * @ibqp: iqarp qp
632 */
633void i40iw_rem_ref(struct ib_qp *ibqp)
634{
635 struct i40iw_qp *iwqp;
636 enum i40iw_status_code status;
637 struct i40iw_cqp_request *cqp_request;
638 struct cqp_commands_info *cqp_info;
639 struct i40iw_device *iwdev;
640 u32 qp_num;
641 unsigned long flags;
642
643 iwqp = to_iwqp(ibqp);
644 iwdev = iwqp->iwdev;
645 spin_lock_irqsave(&iwdev->qptable_lock, flags);
646 if (!atomic_dec_and_test(&iwqp->refcount)) {
647 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
648 return;
649 }
650
651 qp_num = iwqp->ibqp.qp_num;
652 iwdev->qp_table[qp_num] = NULL;
653 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
654 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
655 if (!cqp_request)
656 return;
657
658 cqp_request->callback_fcn = i40iw_free_qp;
659 cqp_request->param = (void *)&iwqp->sc_qp;
660 cqp_info = &cqp_request->info;
661 cqp_info->cqp_cmd = OP_QP_DESTROY;
662 cqp_info->post_sq = 1;
663 cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
664 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
665 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
666 status = i40iw_handle_cqp_op(iwdev, cqp_request);
667 if (!status)
668 return;
669
670 i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
671 i40iw_free_qp_resources(iwdev, iwqp, qp_num);
672 i40iw_rem_devusecount(iwdev);
673}
674
675/**
676 * i40iw_get_qp - get qp address
677 * @device: iwarp device
678 * @qpn: qp number
679 */
680struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
681{
682 struct i40iw_device *iwdev = to_iwdev(device);
683
684 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
685 return NULL;
686
687 return &iwdev->qp_table[qpn]->ibqp;
688}
689
690/**
691 * i40iw_debug_buf - print debug msg and buffer is mask set
692 * @dev: hardware control device structure
693 * @mask: mask to compare if to print debug buffer
694 * @buf: points buffer addr
695 * @size: saize of buffer to print
696 */
697void i40iw_debug_buf(struct i40iw_sc_dev *dev,
698 enum i40iw_debug_flag mask,
699 char *desc,
700 u64 *buf,
701 u32 size)
702{
703 u32 i;
704
705 if (!(dev->debug_mask & mask))
706 return;
707 i40iw_debug(dev, mask, "%s\n", desc);
708 i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
709 (unsigned long long)virt_to_phys(buf));
710
711 for (i = 0; i < size; i += 8)
712 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
713}
714
715/**
716 * i40iw_get_hw_addr - return hw addr
717 * @par: points to shared dev
718 */
719u8 __iomem *i40iw_get_hw_addr(void *par)
720{
721 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
722
723 return dev->hw->hw_addr;
724}
725
726/**
727 * i40iw_remove_head - return head entry and remove from list
728 * @list: list for entry
729 */
730void *i40iw_remove_head(struct list_head *list)
731{
732 struct list_head *entry;
733
734 if (list_empty(list))
735 return NULL;
736
737 entry = (void *)list->next;
738 list_del(entry);
739 return (void *)entry;
740}
741
742/**
743 * i40iw_allocate_dma_mem - Memory alloc helper fn
744 * @hw: pointer to the HW structure
745 * @mem: ptr to mem struct to fill out
746 * @size: size of memory requested
747 * @alignment: what to align the allocation to
748 */
749enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
750 struct i40iw_dma_mem *mem,
751 u64 size,
752 u32 alignment)
753{
754 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
755
756 if (!mem)
757 return I40IW_ERR_PARAM;
758 mem->size = ALIGN(size, alignment);
759 mem->va = dma_alloc_coherent(&pcidev->dev, mem->size,
760 (dma_addr_t *)&mem->pa, GFP_KERNEL);
761 if (!mem->va)
762 return I40IW_ERR_NO_MEMORY;
763 return 0;
764}
765
766/**
767 * i40iw_free_dma_mem - Memory free helper fn
768 * @hw: pointer to the HW structure
769 * @mem: ptr to mem struct to free
770 */
771void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
772{
773 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
774
775 if (!mem || !mem->va)
776 return;
777
778 dma_free_coherent(&pcidev->dev, mem->size,
779 mem->va, (dma_addr_t)mem->pa);
780 mem->va = NULL;
781}
782
783/**
784 * i40iw_allocate_virt_mem - virtual memory alloc helper fn
785 * @hw: pointer to the HW structure
786 * @mem: ptr to mem struct to fill out
787 * @size: size of memory requested
788 */
789enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
790 struct i40iw_virt_mem *mem,
791 u32 size)
792{
793 if (!mem)
794 return I40IW_ERR_PARAM;
795
796 mem->size = size;
797 mem->va = kzalloc(size, GFP_KERNEL);
798
799 if (mem->va)
800 return 0;
801 else
802 return I40IW_ERR_NO_MEMORY;
803}
804
805/**
806 * i40iw_free_virt_mem - virtual memory free helper fn
807 * @hw: pointer to the HW structure
808 * @mem: ptr to mem struct to free
809 */
810enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
811 struct i40iw_virt_mem *mem)
812{
813 if (!mem)
814 return I40IW_ERR_PARAM;
815 /*
816 * mem->va points to the parent of mem, so both mem and mem->va
817 * can not be touched once mem->va is freed
818 */
819 kfree(mem->va);
820 return 0;
821}
822
823/**
824 * i40iw_cqp_sds_cmd - create cqp command for sd
825 * @dev: hardware control device structure
826 * @sd_info: information for sd cqp
827 *
828 */
829enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
830 struct i40iw_update_sds_info *sdinfo)
831{
832 enum i40iw_status_code status;
833 struct i40iw_cqp_request *cqp_request;
834 struct cqp_commands_info *cqp_info;
835 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
836
837 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
838 if (!cqp_request)
839 return I40IW_ERR_NO_MEMORY;
840 cqp_info = &cqp_request->info;
841 memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
842 sizeof(cqp_info->in.u.update_pe_sds.info));
843 cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
844 cqp_info->post_sq = 1;
845 cqp_info->in.u.update_pe_sds.dev = dev;
846 cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
847 status = i40iw_handle_cqp_op(iwdev, cqp_request);
848 if (status)
849 i40iw_pr_err("CQP-OP Update SD's fail");
850 return status;
851}
852
853/**
854 * i40iw_qp_suspend_resume - cqp command for suspend/resume
855 * @dev: hardware control device structure
856 * @qp: hardware control qp
857 * @suspend: flag if suspend or resume
858 */
859void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
860{
861 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
862 struct i40iw_cqp_request *cqp_request;
863 struct i40iw_sc_cqp *cqp = dev->cqp;
864 struct cqp_commands_info *cqp_info;
865 enum i40iw_status_code status;
866
867 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
868 if (!cqp_request)
869 return;
870
871 cqp_info = &cqp_request->info;
872 cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
873 cqp_info->in.u.suspend_resume.cqp = cqp;
874 cqp_info->in.u.suspend_resume.qp = qp;
875 cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
876 status = i40iw_handle_cqp_op(iwdev, cqp_request);
877 if (status)
878 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
879}
880
881/**
882 * i40iw_term_modify_qp - modify qp for term message
883 * @qp: hardware control qp
884 * @next_state: qp's next state
885 * @term: terminate code
886 * @term_len: length
887 */
888void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
889{
890 struct i40iw_qp *iwqp;
891
892 iwqp = (struct i40iw_qp *)qp->back_qp;
893 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
894};
895
896/**
897 * i40iw_terminate_done - after terminate is completed
898 * @qp: hardware control qp
899 * @timeout_occurred: indicates if terminate timer expired
900 */
901void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
902{
903 struct i40iw_qp *iwqp;
904 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
905 u8 hte = 0;
906 bool first_time;
907 unsigned long flags;
908
909 iwqp = (struct i40iw_qp *)qp->back_qp;
910 spin_lock_irqsave(&iwqp->lock, flags);
911 if (iwqp->hte_added) {
912 iwqp->hte_added = 0;
913 hte = 1;
914 }
915 first_time = !(qp->term_flags & I40IW_TERM_DONE);
916 qp->term_flags |= I40IW_TERM_DONE;
917 spin_unlock_irqrestore(&iwqp->lock, flags);
918 if (first_time) {
919 if (!timeout_occurred)
920 i40iw_terminate_del_timer(qp);
921 else
922 next_iwarp_state = I40IW_QP_STATE_CLOSING;
923
924 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
925 i40iw_cm_disconn(iwqp);
926 }
927}
928
929/**
930 * i40iw_terminate_imeout - timeout happened
931 * @context: points to iwarp qp
932 */
933static void i40iw_terminate_timeout(struct timer_list *t)
934{
935 struct i40iw_qp *iwqp = from_timer(iwqp, t, terminate_timer);
936 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
937
938 i40iw_terminate_done(qp, 1);
939 i40iw_rem_ref(&iwqp->ibqp);
940}
941
942/**
943 * i40iw_terminate_start_timer - start terminate timeout
944 * @qp: hardware control qp
945 */
946void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
947{
948 struct i40iw_qp *iwqp;
949
950 iwqp = (struct i40iw_qp *)qp->back_qp;
951 i40iw_add_ref(&iwqp->ibqp);
952 timer_setup(&iwqp->terminate_timer, i40iw_terminate_timeout, 0);
953 iwqp->terminate_timer.expires = jiffies + HZ;
954 add_timer(&iwqp->terminate_timer);
955}
956
957/**
958 * i40iw_terminate_del_timer - delete terminate timeout
959 * @qp: hardware control qp
960 */
961void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
962{
963 struct i40iw_qp *iwqp;
964
965 iwqp = (struct i40iw_qp *)qp->back_qp;
966 if (del_timer(&iwqp->terminate_timer))
967 i40iw_rem_ref(&iwqp->ibqp);
968}
969
970/**
971 * i40iw_cqp_generic_worker - generic worker for cqp
972 * @work: work pointer
973 */
974static void i40iw_cqp_generic_worker(struct work_struct *work)
975{
976 struct i40iw_virtchnl_work_info *work_info =
977 &((struct virtchnl_work *)work)->work_info;
978
979 if (work_info->worker_vf_dev)
980 work_info->callback_fcn(work_info->worker_vf_dev);
981}
982
983/**
984 * i40iw_cqp_spawn_worker - spawn worket thread
985 * @iwdev: device struct pointer
986 * @work_info: work request info
987 * @iw_vf_idx: virtual function index
988 */
989void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
990 struct i40iw_virtchnl_work_info *work_info,
991 u32 iw_vf_idx)
992{
993 struct virtchnl_work *work;
994 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
995
996 work = &iwdev->virtchnl_w[iw_vf_idx];
997 memcpy(&work->work_info, work_info, sizeof(*work_info));
998 INIT_WORK(&work->work, i40iw_cqp_generic_worker);
999 queue_work(iwdev->virtchnl_wq, &work->work);
1000}
1001
1002/**
1003 * i40iw_cqp_manage_hmc_fcn_worker -
1004 * @work: work pointer for hmc info
1005 */
1006static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
1007{
1008 struct i40iw_cqp_request *cqp_request =
1009 ((struct virtchnl_work *)work)->cqp_request;
1010 struct i40iw_ccq_cqe_info ccq_cqe_info;
1011 struct i40iw_hmc_fcn_info *hmcfcninfo =
1012 &cqp_request->info.in.u.manage_hmc_pm.info;
1013 struct i40iw_device *iwdev =
1014 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
1015
1016 ccq_cqe_info.cqp = NULL;
1017 ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
1018 ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
1019 ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
1020 ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
1021 ccq_cqe_info.scratch = 0;
1022 ccq_cqe_info.error = cqp_request->compl_info.error;
1023 hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
1024 hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
1025 i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
1026}
1027
1028/**
1029 * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
1030 * @cqp_request: cqp request info struct for hmc fun
1031 * @unused: unused param of callback
1032 */
1033static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
1034 u32 unused)
1035{
1036 struct virtchnl_work *work;
1037 struct i40iw_hmc_fcn_info *hmcfcninfo =
1038 &cqp_request->info.in.u.manage_hmc_pm.info;
1039 struct i40iw_device *iwdev =
1040 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
1041 back_dev;
1042
1043 if (hmcfcninfo && hmcfcninfo->callback_fcn) {
1044 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
1045 atomic_inc(&cqp_request->refcount);
1046 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
1047 work->cqp_request = cqp_request;
1048 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
1049 queue_work(iwdev->virtchnl_wq, &work->work);
1050 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
1051 } else {
1052 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
1053 }
1054}
1055
1056/**
1057 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
1058 * @dev: hardware control device structure
1059 * @hmcfcninfo: info for hmc
1060 */
1061enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
1062 struct i40iw_hmc_fcn_info *hmcfcninfo)
1063{
1064 enum i40iw_status_code status;
1065 struct i40iw_cqp_request *cqp_request;
1066 struct cqp_commands_info *cqp_info;
1067 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1068
1069 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
1070 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
1071 if (!cqp_request)
1072 return I40IW_ERR_NO_MEMORY;
1073 cqp_info = &cqp_request->info;
1074 cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
1075 cqp_request->param = hmcfcninfo;
1076 memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
1077 sizeof(*hmcfcninfo));
1078 cqp_info->in.u.manage_hmc_pm.dev = dev;
1079 cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
1080 cqp_info->post_sq = 1;
1081 cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
1082 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1083 if (status)
1084 i40iw_pr_err("CQP-OP Manage HMC fail");
1085 return status;
1086}
1087
1088/**
1089 * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
1090 * @iwdev: function device struct
1091 * @values_mem: buffer for fpm
1092 * @hmc_fn_id: function id for fpm
1093 */
1094enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
1095 struct i40iw_dma_mem *values_mem,
1096 u8 hmc_fn_id)
1097{
1098 enum i40iw_status_code status;
1099 struct i40iw_cqp_request *cqp_request;
1100 struct cqp_commands_info *cqp_info;
1101 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1102
1103 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1104 if (!cqp_request)
1105 return I40IW_ERR_NO_MEMORY;
1106 cqp_info = &cqp_request->info;
1107 cqp_request->param = NULL;
1108 cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
1109 cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
1110 cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
1111 cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
1112 cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
1113 cqp_info->post_sq = 1;
1114 cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
1115 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1116 if (status)
1117 i40iw_pr_err("CQP-OP Query FPM fail");
1118 return status;
1119}
1120
1121/**
1122 * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
1123 * @dev: hardware control device structure
1124 * @values_mem: buffer with fpm values
1125 * @hmc_fn_id: function id for fpm
1126 */
1127enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1128 struct i40iw_dma_mem *values_mem,
1129 u8 hmc_fn_id)
1130{
1131 enum i40iw_status_code status;
1132 struct i40iw_cqp_request *cqp_request;
1133 struct cqp_commands_info *cqp_info;
1134 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1135
1136 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1137 if (!cqp_request)
1138 return I40IW_ERR_NO_MEMORY;
1139 cqp_info = &cqp_request->info;
1140 cqp_request->param = NULL;
1141 cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
1142 cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
1143 cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
1144 cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
1145 cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
1146 cqp_info->post_sq = 1;
1147 cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
1148 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1149 if (status)
1150 i40iw_pr_err("CQP-OP Commit FPM fail");
1151 return status;
1152}
1153
1154/**
1155 * i40iw_vf_wait_vchnl_resp - wait for channel msg
1156 * @iwdev: function's device struct
1157 */
1158enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1159{
1160 struct i40iw_device *iwdev = dev->back_dev;
1161 int timeout_ret;
1162
1163 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1164 __func__, __LINE__, dev, iwdev);
1165
1166 atomic_set(&iwdev->vchnl_msgs, 2);
1167 timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1168 (atomic_read(&iwdev->vchnl_msgs) == 1),
1169 I40IW_VCHNL_EVENT_TIMEOUT);
1170 atomic_dec(&iwdev->vchnl_msgs);
1171 if (!timeout_ret) {
1172 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1173 atomic_set(&iwdev->vchnl_msgs, 0);
1174 dev->vchnl_up = false;
1175 return I40IW_ERR_TIMEOUT;
1176 }
1177 wake_up(&dev->vf_reqs);
1178 return 0;
1179}
1180
1181/**
1182 * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1183 * @dev: device pointer
1184 * @cq: pointer to created cq
1185 */
1186enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1187 struct i40iw_sc_cq *cq)
1188{
1189 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1190 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1191 struct i40iw_cqp_request *cqp_request;
1192 struct cqp_commands_info *cqp_info;
1193 enum i40iw_status_code status;
1194
1195 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1196 if (!cqp_request)
1197 return I40IW_ERR_NO_MEMORY;
1198
1199 cqp_info = &cqp_request->info;
1200 cqp_info->cqp_cmd = OP_CQ_CREATE;
1201 cqp_info->post_sq = 1;
1202 cqp_info->in.u.cq_create.cq = cq;
1203 cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1204 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1205 if (status)
1206 i40iw_pr_err("CQP-OP Create QP fail");
1207
1208 return status;
1209}
1210
1211/**
1212 * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1213 * @dev: device pointer
1214 * @qp: pointer to created qp
1215 */
1216enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1217 struct i40iw_sc_qp *qp)
1218{
1219 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1220 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1221 struct i40iw_cqp_request *cqp_request;
1222 struct cqp_commands_info *cqp_info;
1223 struct i40iw_create_qp_info *qp_info;
1224 enum i40iw_status_code status;
1225
1226 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1227 if (!cqp_request)
1228 return I40IW_ERR_NO_MEMORY;
1229
1230 cqp_info = &cqp_request->info;
1231 qp_info = &cqp_request->info.in.u.qp_create.info;
1232
1233 memset(qp_info, 0, sizeof(*qp_info));
1234
1235 qp_info->cq_num_valid = true;
1236 qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
1237
1238 cqp_info->cqp_cmd = OP_QP_CREATE;
1239 cqp_info->post_sq = 1;
1240 cqp_info->in.u.qp_create.qp = qp;
1241 cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1242 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1243 if (status)
1244 i40iw_pr_err("CQP-OP QP create fail");
1245 return status;
1246}
1247
1248/**
1249 * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1250 * @dev: device pointer
1251 * @cq: pointer to cq
1252 */
1253void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1254{
1255 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1256
1257 i40iw_cq_wq_destroy(iwdev, cq);
1258}
1259
1260/**
1261 * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1262 * @dev: device pointer
1263 * @qp: pointer to qp
1264 */
1265void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1266{
1267 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1268 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1269 struct i40iw_cqp_request *cqp_request;
1270 struct cqp_commands_info *cqp_info;
1271 enum i40iw_status_code status;
1272
1273 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1274 if (!cqp_request)
1275 return;
1276
1277 cqp_info = &cqp_request->info;
1278 memset(cqp_info, 0, sizeof(*cqp_info));
1279
1280 cqp_info->cqp_cmd = OP_QP_DESTROY;
1281 cqp_info->post_sq = 1;
1282 cqp_info->in.u.qp_destroy.qp = qp;
1283 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1284 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1285 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1286 if (status)
1287 i40iw_pr_err("CQP QP_DESTROY fail");
1288}
1289
1290
1291/**
1292 * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1293 * @dev: hardware control device structure
1294 * @qp: hardware control qp
1295 */
1296void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1297{
1298 struct i40iw_gen_ae_info info;
1299 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1300
1301 i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1302 info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1303 info.ae_source = I40IW_AE_SOURCE_RQ;
1304 i40iw_gen_ae(iwdev, qp, &info, false);
1305}
1306
1307/**
1308 * i40iw_init_hash_desc - initialize hash for crc calculation
1309 * @desc: cryption type
1310 */
1311enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1312{
1313 struct crypto_shash *tfm;
1314 struct shash_desc *tdesc;
1315
1316 tfm = crypto_alloc_shash("crc32c", 0, 0);
1317 if (IS_ERR(tfm))
1318 return I40IW_ERR_MPA_CRC;
1319
1320 tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1321 GFP_KERNEL);
1322 if (!tdesc) {
1323 crypto_free_shash(tfm);
1324 return I40IW_ERR_MPA_CRC;
1325 }
1326 tdesc->tfm = tfm;
1327 *desc = tdesc;
1328
1329 return 0;
1330}
1331
1332/**
1333 * i40iw_free_hash_desc - free hash desc
1334 * @desc: to be freed
1335 */
1336void i40iw_free_hash_desc(struct shash_desc *desc)
1337{
1338 if (desc) {
1339 crypto_free_shash(desc->tfm);
1340 kfree(desc);
1341 }
1342}
1343
1344/**
1345 * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1346 * @dev: hardware control device structure
1347 * @mem: buffer ptr for fpm to be allocated
1348 * @return: memory allocation status
1349 */
1350enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1351 struct i40iw_dma_mem *mem)
1352{
1353 enum i40iw_status_code status;
1354 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1355
1356 status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1357 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1358 return status;
1359}
1360
1361/**
1362 * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1363 * @desc: desc for hash
1364 * @addr: address of buffer for crc
1365 * @length: length of buffer
1366 * @value: value to be compared
1367 */
1368enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1369 void *addr,
1370 u32 length,
1371 u32 value)
1372{
1373 u32 crc = 0;
1374 int ret;
1375 enum i40iw_status_code ret_code = 0;
1376
1377 crypto_shash_init(desc);
1378 ret = crypto_shash_update(desc, addr, length);
1379 if (!ret)
1380 crypto_shash_final(desc, (u8 *)&crc);
1381 if (crc != value) {
1382 i40iw_pr_err("mpa crc check fail\n");
1383 ret_code = I40IW_ERR_MPA_CRC;
1384 }
1385 return ret_code;
1386}
1387
1388/**
1389 * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1390 * @dev: hardware control device structure
1391 * @buf: receive puda buffer on exception q
1392 */
1393struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1394 struct i40iw_puda_buf *buf)
1395{
1396 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1397 struct i40iw_qp *iwqp;
1398 struct i40iw_cm_node *cm_node;
1399 u32 loc_addr[4], rem_addr[4];
1400 u16 loc_port, rem_port;
1401 struct ipv6hdr *ip6h;
1402 struct iphdr *iph = (struct iphdr *)buf->iph;
1403 struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1404
1405 if (iph->version == 4) {
1406 memset(loc_addr, 0, sizeof(loc_addr));
1407 loc_addr[0] = ntohl(iph->daddr);
1408 memset(rem_addr, 0, sizeof(rem_addr));
1409 rem_addr[0] = ntohl(iph->saddr);
1410 } else {
1411 ip6h = (struct ipv6hdr *)buf->iph;
1412 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1413 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1414 }
1415 loc_port = ntohs(tcph->dest);
1416 rem_port = ntohs(tcph->source);
1417
1418 cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1419 loc_addr, false, true);
1420 if (!cm_node)
1421 return NULL;
1422 iwqp = cm_node->iwqp;
1423 return &iwqp->sc_qp;
1424}
1425
1426/**
1427 * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1428 * @buf: puda to update
1429 * @length: length of buffer
1430 * @seqnum: seq number for tcp
1431 */
1432void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1433{
1434 struct tcphdr *tcph;
1435 struct iphdr *iph;
1436 u16 iphlen;
1437 u16 packetsize;
1438 u8 *addr = (u8 *)buf->mem.va;
1439
1440 iphlen = (buf->ipv4) ? 20 : 40;
1441 iph = (struct iphdr *)(addr + buf->maclen);
1442 tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1443 packetsize = length + buf->tcphlen + iphlen;
1444
1445 iph->tot_len = htons(packetsize);
1446 tcph->seq = htonl(seqnum);
1447}
1448
1449/**
1450 * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1451 * @info: to get information
1452 * @buf: puda buffer
1453 */
1454enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1455 struct i40iw_puda_buf *buf)
1456{
1457 struct iphdr *iph;
1458 struct ipv6hdr *ip6h;
1459 struct tcphdr *tcph;
1460 u16 iphlen;
1461 u16 pkt_len;
1462 u8 *mem = (u8 *)buf->mem.va;
1463 struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1464
1465 if (ethh->h_proto == htons(0x8100)) {
1466 info->vlan_valid = true;
1467 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1468 }
1469 buf->maclen = (info->vlan_valid) ? 18 : 14;
1470 iphlen = (info->l3proto) ? 40 : 20;
1471 buf->ipv4 = (info->l3proto) ? false : true;
1472 buf->iph = mem + buf->maclen;
1473 iph = (struct iphdr *)buf->iph;
1474
1475 buf->tcph = buf->iph + iphlen;
1476 tcph = (struct tcphdr *)buf->tcph;
1477
1478 if (buf->ipv4) {
1479 pkt_len = ntohs(iph->tot_len);
1480 } else {
1481 ip6h = (struct ipv6hdr *)buf->iph;
1482 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1483 }
1484
1485 buf->totallen = pkt_len + buf->maclen;
1486
1487 if (info->payload_len < buf->totallen) {
1488 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1489 info->payload_len, buf->totallen);
1490 return I40IW_ERR_INVALID_SIZE;
1491 }
1492
1493 buf->tcphlen = (tcph->doff) << 2;
1494 buf->datalen = pkt_len - iphlen - buf->tcphlen;
1495 buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1496 buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1497 buf->seqnum = ntohl(tcph->seq);
1498 return 0;
1499}
1500
1501/**
1502 * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1503 * @vsi: pointer to the vsi structure
1504 */
1505static void i40iw_hw_stats_timeout(struct timer_list *t)
1506{
1507 struct i40iw_vsi_pestat *pf_devstat = from_timer(pf_devstat, t,
1508 stats_timer);
1509 struct i40iw_sc_vsi *sc_vsi = pf_devstat->vsi;
1510 struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
1511 struct i40iw_vsi_pestat *vf_devstat = NULL;
1512 u16 iw_vf_idx;
1513 unsigned long flags;
1514
1515 /*PF*/
1516 i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
1517
1518 for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1519 spin_lock_irqsave(&pf_devstat->lock, flags);
1520 if (pf_dev->vf_dev[iw_vf_idx]) {
1521 if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1522 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
1523 i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
1524 }
1525 }
1526 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1527 }
1528
1529 mod_timer(&pf_devstat->stats_timer,
1530 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1531}
1532
1533/**
1534 * i40iw_hw_stats_start_timer - Start periodic stats timer
1535 * @vsi: pointer to the vsi structure
1536 */
1537void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1538{
1539 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1540
1541 timer_setup(&devstat->stats_timer, i40iw_hw_stats_timeout, 0);
1542 mod_timer(&devstat->stats_timer,
1543 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1544}
1545
1546/**
1547 * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1548 * @vsi: pointer to the vsi structure
1549 */
1550void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1551{
1552 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1553
1554 del_timer_sync(&devstat->stats_timer);
1555}