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 */
i40iw_arp_table(struct i40iw_device * iwdev,u32 * ip_addr,bool ipv4,u8 * mac_addr,u32 action)61 int 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 */
i40iw_wr32(struct i40iw_hw * hw,u32 reg,u32 value)122 inline 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 */
i40iw_rd32(struct i40iw_hw * hw,u32 reg)134 inline 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 */
i40iw_inetaddr_event(struct notifier_block * notifier,unsigned long event,void * ptr)145 int 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 */
i40iw_inet6addr_event(struct notifier_block * notifier,unsigned long event,void * ptr)221 int 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 */
i40iw_net_event(struct notifier_block * notifier,unsigned long event,void * ptr)272 int 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 */
i40iw_netdevice_event(struct notifier_block * notifier,unsigned long event,void * ptr)317 int 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 */
i40iw_get_cqp_request(struct i40iw_cqp * cqp,bool wait)360 struct 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 */
i40iw_free_cqp_request(struct i40iw_cqp * cqp,struct i40iw_cqp_request * cqp_request)399 void 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 */
i40iw_put_cqp_request(struct i40iw_cqp * cqp,struct i40iw_cqp_request * cqp_request)423 void 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 */
i40iw_free_pending_cqp_request(struct i40iw_cqp * cqp,struct i40iw_cqp_request * cqp_request)435 static 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 */
i40iw_cleanup_pending_cqp_op(struct i40iw_device * iwdev)455 void 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_wait_event - wait for completion
482 * @iwdev: iwarp device
483 * @cqp_request: cqp request to wait
484 */
i40iw_wait_event(struct i40iw_device * iwdev,struct i40iw_cqp_request * cqp_request)485 static int i40iw_wait_event(struct i40iw_device *iwdev,
486 struct i40iw_cqp_request *cqp_request)
487 {
488 struct cqp_commands_info *info = &cqp_request->info;
489 struct i40iw_cqp *iwcqp = &iwdev->cqp;
490 struct i40iw_cqp_timeout cqp_timeout;
491 bool cqp_error = false;
492 int err_code = 0;
493 memset(&cqp_timeout, 0, sizeof(cqp_timeout));
494 cqp_timeout.compl_cqp_cmds = iwdev->sc_dev.cqp_cmd_stats[OP_COMPLETED_COMMANDS];
495 do {
496 if (wait_event_timeout(cqp_request->waitq,
497 cqp_request->request_done, CQP_COMPL_WAIT_TIME))
498 break;
499
500 i40iw_check_cqp_progress(&cqp_timeout, &iwdev->sc_dev);
501
502 if (cqp_timeout.count < CQP_TIMEOUT_THRESHOLD)
503 continue;
504
505 i40iw_pr_err("error cqp command 0x%x timed out", info->cqp_cmd);
506 err_code = -ETIME;
507 if (!iwdev->reset) {
508 iwdev->reset = true;
509 i40iw_request_reset(iwdev);
510 }
511 goto done;
512 } while (1);
513 cqp_error = cqp_request->compl_info.error;
514 if (cqp_error) {
515 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
516 info->cqp_cmd, cqp_request->compl_info.maj_err_code,
517 cqp_request->compl_info.min_err_code);
518 err_code = -EPROTO;
519 goto done;
520 }
521 done:
522 i40iw_put_cqp_request(iwcqp, cqp_request);
523 return err_code;
524 }
525
526 /**
527 * i40iw_handle_cqp_op - process cqp command
528 * @iwdev: iwarp device
529 * @cqp_request: cqp request to process
530 */
i40iw_handle_cqp_op(struct i40iw_device * iwdev,struct i40iw_cqp_request * cqp_request)531 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
532 struct i40iw_cqp_request
533 *cqp_request)
534 {
535 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
536 enum i40iw_status_code status;
537 struct cqp_commands_info *info = &cqp_request->info;
538 int err_code = 0;
539
540 if (iwdev->reset) {
541 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
542 return I40IW_ERR_CQP_COMPL_ERROR;
543 }
544
545 status = i40iw_process_cqp_cmd(dev, info);
546 if (status) {
547 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
548 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
549 return status;
550 }
551 if (cqp_request->waiting)
552 err_code = i40iw_wait_event(iwdev, cqp_request);
553 if (err_code)
554 status = I40IW_ERR_CQP_COMPL_ERROR;
555 return status;
556 }
557
558 /**
559 * i40iw_add_devusecount - add dev refcount
560 * @iwdev: dev for refcount
561 */
i40iw_add_devusecount(struct i40iw_device * iwdev)562 void i40iw_add_devusecount(struct i40iw_device *iwdev)
563 {
564 atomic64_inc(&iwdev->use_count);
565 }
566
567 /**
568 * i40iw_rem_devusecount - decrement refcount for dev
569 * @iwdev: device
570 */
i40iw_rem_devusecount(struct i40iw_device * iwdev)571 void i40iw_rem_devusecount(struct i40iw_device *iwdev)
572 {
573 if (!atomic64_dec_and_test(&iwdev->use_count))
574 return;
575 wake_up(&iwdev->close_wq);
576 }
577
578 /**
579 * i40iw_add_pdusecount - add pd refcount
580 * @iwpd: pd for refcount
581 */
i40iw_add_pdusecount(struct i40iw_pd * iwpd)582 void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
583 {
584 atomic_inc(&iwpd->usecount);
585 }
586
587 /**
588 * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
589 * @iwpd: pd for refcount
590 * @iwdev: iwarp device
591 */
i40iw_rem_pdusecount(struct i40iw_pd * iwpd,struct i40iw_device * iwdev)592 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
593 {
594 if (!atomic_dec_and_test(&iwpd->usecount))
595 return;
596 i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
597 }
598
599 /**
600 * i40iw_qp_add_ref - add refcount for qp
601 * @ibqp: iqarp qp
602 */
i40iw_qp_add_ref(struct ib_qp * ibqp)603 void i40iw_qp_add_ref(struct ib_qp *ibqp)
604 {
605 struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
606
607 refcount_inc(&iwqp->refcount);
608 }
609
610 /**
611 * i40iw_qp_rem_ref - rem refcount for qp and free if 0
612 * @ibqp: iqarp qp
613 */
i40iw_qp_rem_ref(struct ib_qp * ibqp)614 void i40iw_qp_rem_ref(struct ib_qp *ibqp)
615 {
616 struct i40iw_qp *iwqp;
617 struct i40iw_device *iwdev;
618 u32 qp_num;
619 unsigned long flags;
620
621 iwqp = to_iwqp(ibqp);
622 iwdev = iwqp->iwdev;
623 spin_lock_irqsave(&iwdev->qptable_lock, flags);
624 if (!refcount_dec_and_test(&iwqp->refcount)) {
625 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
626 return;
627 }
628
629 qp_num = iwqp->ibqp.qp_num;
630 iwdev->qp_table[qp_num] = NULL;
631 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
632 complete(&iwqp->free_qp);
633
634 }
635
636 /**
637 * i40iw_get_qp - get qp address
638 * @device: iwarp device
639 * @qpn: qp number
640 */
i40iw_get_qp(struct ib_device * device,int qpn)641 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
642 {
643 struct i40iw_device *iwdev = to_iwdev(device);
644
645 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
646 return NULL;
647
648 return &iwdev->qp_table[qpn]->ibqp;
649 }
650
651 /**
652 * i40iw_debug_buf - print debug msg and buffer is mask set
653 * @dev: hardware control device structure
654 * @mask: mask to compare if to print debug buffer
655 * @buf: points buffer addr
656 * @size: saize of buffer to print
657 */
i40iw_debug_buf(struct i40iw_sc_dev * dev,enum i40iw_debug_flag mask,char * desc,u64 * buf,u32 size)658 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
659 enum i40iw_debug_flag mask,
660 char *desc,
661 u64 *buf,
662 u32 size)
663 {
664 u32 i;
665
666 if (!(dev->debug_mask & mask))
667 return;
668 i40iw_debug(dev, mask, "%s\n", desc);
669 i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
670 (unsigned long long)virt_to_phys(buf));
671
672 for (i = 0; i < size; i += 8)
673 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
674 }
675
676 /**
677 * i40iw_get_hw_addr - return hw addr
678 * @par: points to shared dev
679 */
i40iw_get_hw_addr(void * par)680 u8 __iomem *i40iw_get_hw_addr(void *par)
681 {
682 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
683
684 return dev->hw->hw_addr;
685 }
686
687 /**
688 * i40iw_remove_head - return head entry and remove from list
689 * @list: list for entry
690 */
i40iw_remove_head(struct list_head * list)691 void *i40iw_remove_head(struct list_head *list)
692 {
693 struct list_head *entry;
694
695 if (list_empty(list))
696 return NULL;
697
698 entry = (void *)list->next;
699 list_del(entry);
700 return (void *)entry;
701 }
702
703 /**
704 * i40iw_allocate_dma_mem - Memory alloc helper fn
705 * @hw: pointer to the HW structure
706 * @mem: ptr to mem struct to fill out
707 * @size: size of memory requested
708 * @alignment: what to align the allocation to
709 */
i40iw_allocate_dma_mem(struct i40iw_hw * hw,struct i40iw_dma_mem * mem,u64 size,u32 alignment)710 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
711 struct i40iw_dma_mem *mem,
712 u64 size,
713 u32 alignment)
714 {
715 struct pci_dev *pcidev = hw->pcidev;
716
717 if (!mem)
718 return I40IW_ERR_PARAM;
719 mem->size = ALIGN(size, alignment);
720 mem->va = dma_alloc_coherent(&pcidev->dev, mem->size,
721 (dma_addr_t *)&mem->pa, GFP_KERNEL);
722 if (!mem->va)
723 return I40IW_ERR_NO_MEMORY;
724 return 0;
725 }
726
727 /**
728 * i40iw_free_dma_mem - Memory free helper fn
729 * @hw: pointer to the HW structure
730 * @mem: ptr to mem struct to free
731 */
i40iw_free_dma_mem(struct i40iw_hw * hw,struct i40iw_dma_mem * mem)732 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
733 {
734 struct pci_dev *pcidev = hw->pcidev;
735
736 if (!mem || !mem->va)
737 return;
738
739 dma_free_coherent(&pcidev->dev, mem->size,
740 mem->va, (dma_addr_t)mem->pa);
741 mem->va = NULL;
742 }
743
744 /**
745 * i40iw_allocate_virt_mem - virtual memory alloc helper fn
746 * @hw: pointer to the HW structure
747 * @mem: ptr to mem struct to fill out
748 * @size: size of memory requested
749 */
i40iw_allocate_virt_mem(struct i40iw_hw * hw,struct i40iw_virt_mem * mem,u32 size)750 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
751 struct i40iw_virt_mem *mem,
752 u32 size)
753 {
754 if (!mem)
755 return I40IW_ERR_PARAM;
756
757 mem->size = size;
758 mem->va = kzalloc(size, GFP_KERNEL);
759
760 if (mem->va)
761 return 0;
762 else
763 return I40IW_ERR_NO_MEMORY;
764 }
765
766 /**
767 * i40iw_free_virt_mem - virtual memory free helper fn
768 * @hw: pointer to the HW structure
769 * @mem: ptr to mem struct to free
770 */
i40iw_free_virt_mem(struct i40iw_hw * hw,struct i40iw_virt_mem * mem)771 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
772 struct i40iw_virt_mem *mem)
773 {
774 if (!mem)
775 return I40IW_ERR_PARAM;
776 /*
777 * mem->va points to the parent of mem, so both mem and mem->va
778 * can not be touched once mem->va is freed
779 */
780 kfree(mem->va);
781 return 0;
782 }
783
784 /**
785 * i40iw_cqp_sds_cmd - create cqp command for sd
786 * @dev: hardware control device structure
787 * @sd_info: information for sd cqp
788 *
789 */
i40iw_cqp_sds_cmd(struct i40iw_sc_dev * dev,struct i40iw_update_sds_info * sdinfo)790 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
791 struct i40iw_update_sds_info *sdinfo)
792 {
793 enum i40iw_status_code status;
794 struct i40iw_cqp_request *cqp_request;
795 struct cqp_commands_info *cqp_info;
796 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
797
798 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
799 if (!cqp_request)
800 return I40IW_ERR_NO_MEMORY;
801 cqp_info = &cqp_request->info;
802 memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
803 sizeof(cqp_info->in.u.update_pe_sds.info));
804 cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
805 cqp_info->post_sq = 1;
806 cqp_info->in.u.update_pe_sds.dev = dev;
807 cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
808 status = i40iw_handle_cqp_op(iwdev, cqp_request);
809 if (status)
810 i40iw_pr_err("CQP-OP Update SD's fail");
811 return status;
812 }
813
814 /**
815 * i40iw_qp_suspend_resume - cqp command for suspend/resume
816 * @dev: hardware control device structure
817 * @qp: hardware control qp
818 * @suspend: flag if suspend or resume
819 */
i40iw_qp_suspend_resume(struct i40iw_sc_dev * dev,struct i40iw_sc_qp * qp,bool suspend)820 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
821 {
822 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
823 struct i40iw_cqp_request *cqp_request;
824 struct i40iw_sc_cqp *cqp = dev->cqp;
825 struct cqp_commands_info *cqp_info;
826 enum i40iw_status_code status;
827
828 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
829 if (!cqp_request)
830 return;
831
832 cqp_info = &cqp_request->info;
833 cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
834 cqp_info->in.u.suspend_resume.cqp = cqp;
835 cqp_info->in.u.suspend_resume.qp = qp;
836 cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
837 status = i40iw_handle_cqp_op(iwdev, cqp_request);
838 if (status)
839 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
840 }
841
842 /**
843 * i40iw_term_modify_qp - modify qp for term message
844 * @qp: hardware control qp
845 * @next_state: qp's next state
846 * @term: terminate code
847 * @term_len: length
848 */
i40iw_term_modify_qp(struct i40iw_sc_qp * qp,u8 next_state,u8 term,u8 term_len)849 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
850 {
851 struct i40iw_qp *iwqp;
852
853 iwqp = (struct i40iw_qp *)qp->back_qp;
854 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
855 };
856
857 /**
858 * i40iw_terminate_done - after terminate is completed
859 * @qp: hardware control qp
860 * @timeout_occurred: indicates if terminate timer expired
861 */
i40iw_terminate_done(struct i40iw_sc_qp * qp,int timeout_occurred)862 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
863 {
864 struct i40iw_qp *iwqp;
865 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
866 u8 hte = 0;
867 bool first_time;
868 unsigned long flags;
869
870 iwqp = (struct i40iw_qp *)qp->back_qp;
871 spin_lock_irqsave(&iwqp->lock, flags);
872 if (iwqp->hte_added) {
873 iwqp->hte_added = 0;
874 hte = 1;
875 }
876 first_time = !(qp->term_flags & I40IW_TERM_DONE);
877 qp->term_flags |= I40IW_TERM_DONE;
878 spin_unlock_irqrestore(&iwqp->lock, flags);
879 if (first_time) {
880 if (!timeout_occurred)
881 i40iw_terminate_del_timer(qp);
882 else
883 next_iwarp_state = I40IW_QP_STATE_CLOSING;
884
885 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
886 i40iw_cm_disconn(iwqp);
887 }
888 }
889
890 /**
891 * i40iw_terminate_imeout - timeout happened
892 * @context: points to iwarp qp
893 */
i40iw_terminate_timeout(struct timer_list * t)894 static void i40iw_terminate_timeout(struct timer_list *t)
895 {
896 struct i40iw_qp *iwqp = from_timer(iwqp, t, terminate_timer);
897 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
898
899 i40iw_terminate_done(qp, 1);
900 i40iw_qp_rem_ref(&iwqp->ibqp);
901 }
902
903 /**
904 * i40iw_terminate_start_timer - start terminate timeout
905 * @qp: hardware control qp
906 */
i40iw_terminate_start_timer(struct i40iw_sc_qp * qp)907 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
908 {
909 struct i40iw_qp *iwqp;
910
911 iwqp = (struct i40iw_qp *)qp->back_qp;
912 i40iw_qp_add_ref(&iwqp->ibqp);
913 timer_setup(&iwqp->terminate_timer, i40iw_terminate_timeout, 0);
914 iwqp->terminate_timer.expires = jiffies + HZ;
915 add_timer(&iwqp->terminate_timer);
916 }
917
918 /**
919 * i40iw_terminate_del_timer - delete terminate timeout
920 * @qp: hardware control qp
921 */
i40iw_terminate_del_timer(struct i40iw_sc_qp * qp)922 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
923 {
924 struct i40iw_qp *iwqp;
925
926 iwqp = (struct i40iw_qp *)qp->back_qp;
927 if (del_timer(&iwqp->terminate_timer))
928 i40iw_qp_rem_ref(&iwqp->ibqp);
929 }
930
931 /**
932 * i40iw_cqp_generic_worker - generic worker for cqp
933 * @work: work pointer
934 */
i40iw_cqp_generic_worker(struct work_struct * work)935 static void i40iw_cqp_generic_worker(struct work_struct *work)
936 {
937 struct i40iw_virtchnl_work_info *work_info =
938 &((struct virtchnl_work *)work)->work_info;
939
940 if (work_info->worker_vf_dev)
941 work_info->callback_fcn(work_info->worker_vf_dev);
942 }
943
944 /**
945 * i40iw_cqp_spawn_worker - spawn worket thread
946 * @iwdev: device struct pointer
947 * @work_info: work request info
948 * @iw_vf_idx: virtual function index
949 */
i40iw_cqp_spawn_worker(struct i40iw_sc_dev * dev,struct i40iw_virtchnl_work_info * work_info,u32 iw_vf_idx)950 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
951 struct i40iw_virtchnl_work_info *work_info,
952 u32 iw_vf_idx)
953 {
954 struct virtchnl_work *work;
955 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
956
957 work = &iwdev->virtchnl_w[iw_vf_idx];
958 memcpy(&work->work_info, work_info, sizeof(*work_info));
959 INIT_WORK(&work->work, i40iw_cqp_generic_worker);
960 queue_work(iwdev->virtchnl_wq, &work->work);
961 }
962
963 /**
964 * i40iw_cqp_manage_hmc_fcn_worker -
965 * @work: work pointer for hmc info
966 */
i40iw_cqp_manage_hmc_fcn_worker(struct work_struct * work)967 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
968 {
969 struct i40iw_cqp_request *cqp_request =
970 ((struct virtchnl_work *)work)->cqp_request;
971 struct i40iw_ccq_cqe_info ccq_cqe_info;
972 struct i40iw_hmc_fcn_info *hmcfcninfo =
973 &cqp_request->info.in.u.manage_hmc_pm.info;
974 struct i40iw_device *iwdev =
975 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
976
977 ccq_cqe_info.cqp = NULL;
978 ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
979 ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
980 ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
981 ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
982 ccq_cqe_info.scratch = 0;
983 ccq_cqe_info.error = cqp_request->compl_info.error;
984 hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
985 hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
986 i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
987 }
988
989 /**
990 * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
991 * @cqp_request: cqp request info struct for hmc fun
992 * @unused: unused param of callback
993 */
i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request * cqp_request,u32 unused)994 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
995 u32 unused)
996 {
997 struct virtchnl_work *work;
998 struct i40iw_hmc_fcn_info *hmcfcninfo =
999 &cqp_request->info.in.u.manage_hmc_pm.info;
1000 struct i40iw_device *iwdev =
1001 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
1002 back_dev;
1003
1004 if (hmcfcninfo && hmcfcninfo->callback_fcn) {
1005 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
1006 atomic_inc(&cqp_request->refcount);
1007 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
1008 work->cqp_request = cqp_request;
1009 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
1010 queue_work(iwdev->virtchnl_wq, &work->work);
1011 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
1012 } else {
1013 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
1014 }
1015 }
1016
1017 /**
1018 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
1019 * @dev: hardware control device structure
1020 * @hmcfcninfo: info for hmc
1021 */
i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev * dev,struct i40iw_hmc_fcn_info * hmcfcninfo)1022 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
1023 struct i40iw_hmc_fcn_info *hmcfcninfo)
1024 {
1025 enum i40iw_status_code status;
1026 struct i40iw_cqp_request *cqp_request;
1027 struct cqp_commands_info *cqp_info;
1028 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1029
1030 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
1031 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
1032 if (!cqp_request)
1033 return I40IW_ERR_NO_MEMORY;
1034 cqp_info = &cqp_request->info;
1035 cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
1036 cqp_request->param = hmcfcninfo;
1037 memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
1038 sizeof(*hmcfcninfo));
1039 cqp_info->in.u.manage_hmc_pm.dev = dev;
1040 cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
1041 cqp_info->post_sq = 1;
1042 cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
1043 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1044 if (status)
1045 i40iw_pr_err("CQP-OP Manage HMC fail");
1046 return status;
1047 }
1048
1049 /**
1050 * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
1051 * @iwdev: function device struct
1052 * @values_mem: buffer for fpm
1053 * @hmc_fn_id: function id for fpm
1054 */
i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev * dev,struct i40iw_dma_mem * values_mem,u8 hmc_fn_id)1055 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
1056 struct i40iw_dma_mem *values_mem,
1057 u8 hmc_fn_id)
1058 {
1059 enum i40iw_status_code status;
1060 struct i40iw_cqp_request *cqp_request;
1061 struct cqp_commands_info *cqp_info;
1062 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1063
1064 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1065 if (!cqp_request)
1066 return I40IW_ERR_NO_MEMORY;
1067 cqp_info = &cqp_request->info;
1068 cqp_request->param = NULL;
1069 cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
1070 cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
1071 cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
1072 cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
1073 cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
1074 cqp_info->post_sq = 1;
1075 cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
1076 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1077 if (status)
1078 i40iw_pr_err("CQP-OP Query FPM fail");
1079 return status;
1080 }
1081
1082 /**
1083 * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
1084 * @dev: hardware control device structure
1085 * @values_mem: buffer with fpm values
1086 * @hmc_fn_id: function id for fpm
1087 */
i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev * dev,struct i40iw_dma_mem * values_mem,u8 hmc_fn_id)1088 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1089 struct i40iw_dma_mem *values_mem,
1090 u8 hmc_fn_id)
1091 {
1092 enum i40iw_status_code status;
1093 struct i40iw_cqp_request *cqp_request;
1094 struct cqp_commands_info *cqp_info;
1095 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1096
1097 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1098 if (!cqp_request)
1099 return I40IW_ERR_NO_MEMORY;
1100 cqp_info = &cqp_request->info;
1101 cqp_request->param = NULL;
1102 cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
1103 cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
1104 cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
1105 cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
1106 cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
1107 cqp_info->post_sq = 1;
1108 cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
1109 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1110 if (status)
1111 i40iw_pr_err("CQP-OP Commit FPM fail");
1112 return status;
1113 }
1114
1115 /**
1116 * i40iw_vf_wait_vchnl_resp - wait for channel msg
1117 * @iwdev: function's device struct
1118 */
i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev * dev)1119 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1120 {
1121 struct i40iw_device *iwdev = dev->back_dev;
1122 int timeout_ret;
1123
1124 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1125 __func__, __LINE__, dev, iwdev);
1126
1127 atomic_set(&iwdev->vchnl_msgs, 2);
1128 timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1129 (atomic_read(&iwdev->vchnl_msgs) == 1),
1130 I40IW_VCHNL_EVENT_TIMEOUT);
1131 atomic_dec(&iwdev->vchnl_msgs);
1132 if (!timeout_ret) {
1133 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1134 atomic_set(&iwdev->vchnl_msgs, 0);
1135 dev->vchnl_up = false;
1136 return I40IW_ERR_TIMEOUT;
1137 }
1138 wake_up(&dev->vf_reqs);
1139 return 0;
1140 }
1141
1142 /**
1143 * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1144 * @dev: device pointer
1145 * @cq: pointer to created cq
1146 */
i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev * dev,struct i40iw_sc_cq * cq)1147 enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1148 struct i40iw_sc_cq *cq)
1149 {
1150 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1151 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1152 struct i40iw_cqp_request *cqp_request;
1153 struct cqp_commands_info *cqp_info;
1154 enum i40iw_status_code status;
1155
1156 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1157 if (!cqp_request)
1158 return I40IW_ERR_NO_MEMORY;
1159
1160 cqp_info = &cqp_request->info;
1161 cqp_info->cqp_cmd = OP_CQ_CREATE;
1162 cqp_info->post_sq = 1;
1163 cqp_info->in.u.cq_create.cq = cq;
1164 cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1165 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1166 if (status)
1167 i40iw_pr_err("CQP-OP Create QP fail");
1168
1169 return status;
1170 }
1171
1172 /**
1173 * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1174 * @dev: device pointer
1175 * @qp: pointer to created qp
1176 */
i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev * dev,struct i40iw_sc_qp * qp)1177 enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1178 struct i40iw_sc_qp *qp)
1179 {
1180 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1181 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1182 struct i40iw_cqp_request *cqp_request;
1183 struct cqp_commands_info *cqp_info;
1184 struct i40iw_create_qp_info *qp_info;
1185 enum i40iw_status_code status;
1186
1187 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1188 if (!cqp_request)
1189 return I40IW_ERR_NO_MEMORY;
1190
1191 cqp_info = &cqp_request->info;
1192 qp_info = &cqp_request->info.in.u.qp_create.info;
1193
1194 memset(qp_info, 0, sizeof(*qp_info));
1195
1196 qp_info->cq_num_valid = true;
1197 qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
1198
1199 cqp_info->cqp_cmd = OP_QP_CREATE;
1200 cqp_info->post_sq = 1;
1201 cqp_info->in.u.qp_create.qp = qp;
1202 cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1203 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1204 if (status)
1205 i40iw_pr_err("CQP-OP QP create fail");
1206 return status;
1207 }
1208
1209 /**
1210 * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1211 * @dev: device pointer
1212 * @cq: pointer to cq
1213 */
i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev * dev,struct i40iw_sc_cq * cq)1214 void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1215 {
1216 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1217
1218 i40iw_cq_wq_destroy(iwdev, cq);
1219 }
1220
1221 /**
1222 * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1223 * @dev: device pointer
1224 * @qp: pointer to qp
1225 */
i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev * dev,struct i40iw_sc_qp * qp)1226 void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1227 {
1228 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1229 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1230 struct i40iw_cqp_request *cqp_request;
1231 struct cqp_commands_info *cqp_info;
1232 enum i40iw_status_code status;
1233
1234 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1235 if (!cqp_request)
1236 return;
1237
1238 cqp_info = &cqp_request->info;
1239 memset(cqp_info, 0, sizeof(*cqp_info));
1240
1241 cqp_info->cqp_cmd = OP_QP_DESTROY;
1242 cqp_info->post_sq = 1;
1243 cqp_info->in.u.qp_destroy.qp = qp;
1244 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1245 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1246 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1247 if (status)
1248 i40iw_pr_err("CQP QP_DESTROY fail");
1249 }
1250
1251
1252 /**
1253 * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1254 * @dev: hardware control device structure
1255 * @qp: hardware control qp
1256 */
i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev * dev,struct i40iw_sc_qp * qp)1257 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1258 {
1259 struct i40iw_gen_ae_info info;
1260 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1261
1262 i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1263 info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1264 info.ae_source = I40IW_AE_SOURCE_RQ;
1265 i40iw_gen_ae(iwdev, qp, &info, false);
1266 }
1267
1268 /**
1269 * i40iw_init_hash_desc - initialize hash for crc calculation
1270 * @desc: cryption type
1271 */
i40iw_init_hash_desc(struct shash_desc ** desc)1272 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1273 {
1274 struct crypto_shash *tfm;
1275 struct shash_desc *tdesc;
1276
1277 tfm = crypto_alloc_shash("crc32c", 0, 0);
1278 if (IS_ERR(tfm))
1279 return I40IW_ERR_MPA_CRC;
1280
1281 tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1282 GFP_KERNEL);
1283 if (!tdesc) {
1284 crypto_free_shash(tfm);
1285 return I40IW_ERR_MPA_CRC;
1286 }
1287 tdesc->tfm = tfm;
1288 *desc = tdesc;
1289
1290 return 0;
1291 }
1292
1293 /**
1294 * i40iw_free_hash_desc - free hash desc
1295 * @desc: to be freed
1296 */
i40iw_free_hash_desc(struct shash_desc * desc)1297 void i40iw_free_hash_desc(struct shash_desc *desc)
1298 {
1299 if (desc) {
1300 crypto_free_shash(desc->tfm);
1301 kfree(desc);
1302 }
1303 }
1304
1305 /**
1306 * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1307 * @dev: hardware control device structure
1308 * @mem: buffer ptr for fpm to be allocated
1309 * @return: memory allocation status
1310 */
i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev * dev,struct i40iw_dma_mem * mem)1311 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1312 struct i40iw_dma_mem *mem)
1313 {
1314 enum i40iw_status_code status;
1315 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1316
1317 status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1318 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1319 return status;
1320 }
1321
1322 /**
1323 * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1324 * @desc: desc for hash
1325 * @addr: address of buffer for crc
1326 * @length: length of buffer
1327 * @value: value to be compared
1328 */
i40iw_ieq_check_mpacrc(struct shash_desc * desc,void * addr,u32 length,u32 value)1329 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1330 void *addr,
1331 u32 length,
1332 u32 value)
1333 {
1334 u32 crc = 0;
1335 int ret;
1336 enum i40iw_status_code ret_code = 0;
1337
1338 crypto_shash_init(desc);
1339 ret = crypto_shash_update(desc, addr, length);
1340 if (!ret)
1341 crypto_shash_final(desc, (u8 *)&crc);
1342 if (crc != value) {
1343 i40iw_pr_err("mpa crc check fail\n");
1344 ret_code = I40IW_ERR_MPA_CRC;
1345 }
1346 return ret_code;
1347 }
1348
1349 /**
1350 * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1351 * @dev: hardware control device structure
1352 * @buf: receive puda buffer on exception q
1353 */
i40iw_ieq_get_qp(struct i40iw_sc_dev * dev,struct i40iw_puda_buf * buf)1354 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1355 struct i40iw_puda_buf *buf)
1356 {
1357 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1358 struct i40iw_qp *iwqp;
1359 struct i40iw_cm_node *cm_node;
1360 u32 loc_addr[4], rem_addr[4];
1361 u16 loc_port, rem_port;
1362 struct ipv6hdr *ip6h;
1363 struct iphdr *iph = (struct iphdr *)buf->iph;
1364 struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1365
1366 if (iph->version == 4) {
1367 memset(loc_addr, 0, sizeof(loc_addr));
1368 loc_addr[0] = ntohl(iph->daddr);
1369 memset(rem_addr, 0, sizeof(rem_addr));
1370 rem_addr[0] = ntohl(iph->saddr);
1371 } else {
1372 ip6h = (struct ipv6hdr *)buf->iph;
1373 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1374 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1375 }
1376 loc_port = ntohs(tcph->dest);
1377 rem_port = ntohs(tcph->source);
1378
1379 cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1380 loc_addr, false, true);
1381 if (!cm_node)
1382 return NULL;
1383 iwqp = cm_node->iwqp;
1384 return &iwqp->sc_qp;
1385 }
1386
1387 /**
1388 * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1389 * @buf: puda to update
1390 * @length: length of buffer
1391 * @seqnum: seq number for tcp
1392 */
i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf * buf,u16 length,u32 seqnum)1393 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1394 {
1395 struct tcphdr *tcph;
1396 struct iphdr *iph;
1397 u16 iphlen;
1398 u16 packetsize;
1399 u8 *addr = (u8 *)buf->mem.va;
1400
1401 iphlen = (buf->ipv4) ? 20 : 40;
1402 iph = (struct iphdr *)(addr + buf->maclen);
1403 tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1404 packetsize = length + buf->tcphlen + iphlen;
1405
1406 iph->tot_len = htons(packetsize);
1407 tcph->seq = htonl(seqnum);
1408 }
1409
1410 /**
1411 * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1412 * @info: to get information
1413 * @buf: puda buffer
1414 */
i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info * info,struct i40iw_puda_buf * buf)1415 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1416 struct i40iw_puda_buf *buf)
1417 {
1418 struct iphdr *iph;
1419 struct ipv6hdr *ip6h;
1420 struct tcphdr *tcph;
1421 u16 iphlen;
1422 u16 pkt_len;
1423 u8 *mem = (u8 *)buf->mem.va;
1424 struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1425
1426 if (ethh->h_proto == htons(0x8100)) {
1427 info->vlan_valid = true;
1428 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1429 }
1430 buf->maclen = (info->vlan_valid) ? 18 : 14;
1431 iphlen = (info->l3proto) ? 40 : 20;
1432 buf->ipv4 = (info->l3proto) ? false : true;
1433 buf->iph = mem + buf->maclen;
1434 iph = (struct iphdr *)buf->iph;
1435
1436 buf->tcph = buf->iph + iphlen;
1437 tcph = (struct tcphdr *)buf->tcph;
1438
1439 if (buf->ipv4) {
1440 pkt_len = ntohs(iph->tot_len);
1441 } else {
1442 ip6h = (struct ipv6hdr *)buf->iph;
1443 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1444 }
1445
1446 buf->totallen = pkt_len + buf->maclen;
1447
1448 if (info->payload_len < buf->totallen) {
1449 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1450 info->payload_len, buf->totallen);
1451 return I40IW_ERR_INVALID_SIZE;
1452 }
1453
1454 buf->tcphlen = (tcph->doff) << 2;
1455 buf->datalen = pkt_len - iphlen - buf->tcphlen;
1456 buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1457 buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1458 buf->seqnum = ntohl(tcph->seq);
1459 return 0;
1460 }
1461
1462 /**
1463 * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1464 * @vsi: pointer to the vsi structure
1465 */
i40iw_hw_stats_timeout(struct timer_list * t)1466 static void i40iw_hw_stats_timeout(struct timer_list *t)
1467 {
1468 struct i40iw_vsi_pestat *pf_devstat = from_timer(pf_devstat, t,
1469 stats_timer);
1470 struct i40iw_sc_vsi *sc_vsi = pf_devstat->vsi;
1471 struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
1472 struct i40iw_vsi_pestat *vf_devstat = NULL;
1473 u16 iw_vf_idx;
1474 unsigned long flags;
1475
1476 /*PF*/
1477 i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
1478
1479 for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1480 spin_lock_irqsave(&pf_devstat->lock, flags);
1481 if (pf_dev->vf_dev[iw_vf_idx]) {
1482 if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1483 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
1484 i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
1485 }
1486 }
1487 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1488 }
1489
1490 mod_timer(&pf_devstat->stats_timer,
1491 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1492 }
1493
1494 /**
1495 * i40iw_hw_stats_start_timer - Start periodic stats timer
1496 * @vsi: pointer to the vsi structure
1497 */
i40iw_hw_stats_start_timer(struct i40iw_sc_vsi * vsi)1498 void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1499 {
1500 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1501
1502 timer_setup(&devstat->stats_timer, i40iw_hw_stats_timeout, 0);
1503 mod_timer(&devstat->stats_timer,
1504 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1505 }
1506
1507 /**
1508 * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1509 * @vsi: pointer to the vsi structure
1510 */
i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi * vsi)1511 void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1512 {
1513 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1514
1515 del_timer_sync(&devstat->stats_timer);
1516 }
1517