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