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[linux-2.6-block.git] / drivers / infiniband / hw / i40iw / i40iw_utils.c
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4e9042e6
FL		 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,
20c61f7e 62 u32 *ip_addr,
4e9042e6
FL		 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 netdev 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;
20c61f7e 155 u32 local_ipaddr;
4e9042e6
FL		 156
157 hdl = i40iw_find_netdev(event_netdev);
158 if (!hdl)
159 return NOTIFY_DONE;
160
161 iwdev = &hdl->device;
162 netdev = iwdev->ldev->netdev;
163 upper_dev = netdev_master_upper_dev_get(netdev);
164 if (netdev != event_netdev)
165 return NOTIFY_DONE;
166
167 switch (event) {
168 case NETDEV_DOWN:
169 if (upper_dev)
20c61f7e
IM		 170 local_ipaddr = ntohl(
171 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
4e9042e6 172 else
20c61f7e 173 local_ipaddr = ntohl(ifa->ifa_address);
4e9042e6
FL		 174 i40iw_manage_arp_cache(iwdev,
175 netdev->dev_addr,
176 &local_ipaddr,
177 true,
178 I40IW_ARP_DELETE);
179 return NOTIFY_OK;
180 case NETDEV_UP:
181 if (upper_dev)
20c61f7e
IM		 182 local_ipaddr = ntohl(
183 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
4e9042e6 184 else
20c61f7e 185 local_ipaddr = ntohl(ifa->ifa_address);
4e9042e6
FL		 186 i40iw_manage_arp_cache(iwdev,
187 netdev->dev_addr,
188 &local_ipaddr,
189 true,
190 I40IW_ARP_ADD);
191 break;
192 case NETDEV_CHANGEADDR:
193 /* Add the address to the IP table */
194 if (upper_dev)
20c61f7e
IM		 195 local_ipaddr = ntohl(
196 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
4e9042e6 197 else
20c61f7e 198 local_ipaddr = ntohl(ifa->ifa_address);
4e9042e6 199
4e9042e6
FL		 200 i40iw_manage_arp_cache(iwdev,
201 netdev->dev_addr,
202 &local_ipaddr,
203 true,
204 I40IW_ARP_ADD);
205 break;
206 default:
207 break;
208 }
209 return NOTIFY_DONE;
210}
211
212/**
213 * i40iw_inet6addr_event - system notifier for ipv6 netdev events
214 * @notfier: not used
215 * @event: event for notifier
216 * @ptr: if address
217 */
218int i40iw_inet6addr_event(struct notifier_block *notifier,
219 unsigned long event,
220 void *ptr)
221{
222 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
223 struct net_device *event_netdev = ifa->idev->dev;
224 struct net_device *netdev;
225 struct i40iw_device *iwdev;
226 struct i40iw_handler *hdl;
20c61f7e 227 u32 local_ipaddr6[4];
4e9042e6
FL		 228
229 hdl = i40iw_find_netdev(event_netdev);
230 if (!hdl)
231 return NOTIFY_DONE;
232
233 iwdev = &hdl->device;
234 netdev = iwdev->ldev->netdev;
235 if (netdev != event_netdev)
236 return NOTIFY_DONE;
237
238 switch (event) {
239 case NETDEV_DOWN:
240 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
241 i40iw_manage_arp_cache(iwdev,
242 netdev->dev_addr,
243 local_ipaddr6,
244 false,
245 I40IW_ARP_DELETE);
246 return NOTIFY_OK;
247 case NETDEV_UP:
248 /* Fall through */
249 case NETDEV_CHANGEADDR:
250 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
251 i40iw_manage_arp_cache(iwdev,
252 netdev->dev_addr,
253 local_ipaddr6,
254 false,
255 I40IW_ARP_ADD);
256 break;
257 default:
258 break;
259 }
260 return NOTIFY_DONE;
261}
262
263/**
264 * i40iw_net_event - system notifier for net events
265 * @notfier: not used
266 * @event: event for notifier
267 * @ptr: neighbor
268 */
269int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
270{
271 struct neighbour *neigh = ptr;
272 struct i40iw_device *iwdev;
273 struct i40iw_handler *iwhdl;
274 __be32 *p;
275 u32 local_ipaddr[4];
276
277 switch (event) {
278 case NETEVENT_NEIGH_UPDATE:
279 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
280 if (!iwhdl)
281 return NOTIFY_DONE;
282 iwdev = &iwhdl->device;
283 p = (__be32 *)neigh->primary_key;
284 i40iw_copy_ip_ntohl(local_ipaddr, p);
285 if (neigh->nud_state & NUD_VALID) {
286 i40iw_manage_arp_cache(iwdev,
287 neigh->ha,
288 local_ipaddr,
289 false,
290 I40IW_ARP_ADD);
291
292 } else {
293 i40iw_manage_arp_cache(iwdev,
294 neigh->ha,
295 local_ipaddr,
296 false,
297 I40IW_ARP_DELETE);
298 }
299 break;
300 default:
301 break;
302 }
303 return NOTIFY_DONE;
304}
305
306/**
307 * i40iw_get_cqp_request - get cqp struct
308 * @cqp: device cqp ptr
309 * @wait: cqp to be used in wait mode
310 */
311struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
312{
313 struct i40iw_cqp_request *cqp_request = NULL;
314 unsigned long flags;
315
316 spin_lock_irqsave(&cqp->req_lock, flags);
317 if (!list_empty(&cqp->cqp_avail_reqs)) {
318 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
319 struct i40iw_cqp_request, list);
320 list_del_init(&cqp_request->list);
321 }
322 spin_unlock_irqrestore(&cqp->req_lock, flags);
323 if (!cqp_request) {
324 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
325 if (cqp_request) {
326 cqp_request->dynamic = true;
327 INIT_LIST_HEAD(&cqp_request->list);
328 init_waitqueue_head(&cqp_request->waitq);
329 }
330 }
331 if (!cqp_request) {
332 i40iw_pr_err("CQP Request Fail: No Memory");
333 return NULL;
334 }
335
336 if (wait) {
337 atomic_set(&cqp_request->refcount, 2);
338 cqp_request->waiting = true;
339 } else {
340 atomic_set(&cqp_request->refcount, 1);
341 }
342 return cqp_request;
343}
344
345/**
346 * i40iw_free_cqp_request - free cqp request
347 * @cqp: cqp ptr
348 * @cqp_request: to be put back in cqp list
349 */
350void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
351{
352 unsigned long flags;
353
354 if (cqp_request->dynamic) {
355 kfree(cqp_request);
356 } else {
357 cqp_request->request_done = false;
358 cqp_request->callback_fcn = NULL;
359 cqp_request->waiting = false;
360
361 spin_lock_irqsave(&cqp->req_lock, flags);
362 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
363 spin_unlock_irqrestore(&cqp->req_lock, flags);
364 }
365}
366
367/**
368 * i40iw_put_cqp_request - dec ref count and free if 0
369 * @cqp: cqp ptr
370 * @cqp_request: to be put back in cqp list
371 */
372void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
373 struct i40iw_cqp_request *cqp_request)
374{
375 if (atomic_dec_and_test(&cqp_request->refcount))
376 i40iw_free_cqp_request(cqp, cqp_request);
377}
378
379/**
380 * i40iw_free_qp - callback after destroy cqp completes
381 * @cqp_request: cqp request for destroy qp
382 * @num: not used
383 */
384static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
385{
386 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
387 struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
388 struct i40iw_device *iwdev;
389 u32 qp_num = iwqp->ibqp.qp_num;
390
391 iwdev = iwqp->iwdev;
392
393 i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
394 i40iw_free_qp_resources(iwdev, iwqp, qp_num);
395}
396
397/**
398 * i40iw_wait_event - wait for completion
399 * @iwdev: iwarp device
400 * @cqp_request: cqp request to wait
401 */
402static int i40iw_wait_event(struct i40iw_device *iwdev,
403 struct i40iw_cqp_request *cqp_request)
404{
405 struct cqp_commands_info *info = &cqp_request->info;
406 struct i40iw_cqp *iwcqp = &iwdev->cqp;
407 bool cqp_error = false;
408 int err_code = 0;
409 int timeout_ret = 0;
410
411 timeout_ret = wait_event_timeout(cqp_request->waitq,
412 cqp_request->request_done,
413 I40IW_EVENT_TIMEOUT);
414 if (!timeout_ret) {
415 i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n",
416 info->cqp_cmd, timeout_ret);
417 err_code = -ETIME;
418 i40iw_request_reset(iwdev);
419 goto done;
420 }
421 cqp_error = cqp_request->compl_info.error;
422 if (cqp_error) {
423 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
424 info->cqp_cmd, cqp_request->compl_info.maj_err_code,
425 cqp_request->compl_info.min_err_code);
426 err_code = -EPROTO;
427 goto done;
428 }
429done:
430 i40iw_put_cqp_request(iwcqp, cqp_request);
431 return err_code;
432}
433
434/**
435 * i40iw_handle_cqp_op - process cqp command
436 * @iwdev: iwarp device
437 * @cqp_request: cqp request to process
438 */
439enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
440 struct i40iw_cqp_request
441 *cqp_request)
442{
443 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
444 enum i40iw_status_code status;
445 struct cqp_commands_info *info = &cqp_request->info;
446 int err_code = 0;
447
448 status = i40iw_process_cqp_cmd(dev, info);
449 if (status) {
450 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
451 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
452 return status;
453 }
454 if (cqp_request->waiting)
455 err_code = i40iw_wait_event(iwdev, cqp_request);
456 if (err_code)
457 status = I40IW_ERR_CQP_COMPL_ERROR;
458 return status;
459}
460
461/**
462 * i40iw_add_pdusecount - add pd refcount
463 * @iwpd: pd for refcount
464 */
465void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
466{
467 atomic_inc(&iwpd->usecount);
468}
469
470/**
471 * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
472 * @iwpd: pd for refcount
473 * @iwdev: iwarp device
474 */
475void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
476{
477 if (!atomic_dec_and_test(&iwpd->usecount))
478 return;
479 i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
480 kfree(iwpd);
481}
482
483/**
484 * i40iw_add_ref - add refcount for qp
485 * @ibqp: iqarp qp
486 */
487void i40iw_add_ref(struct ib_qp *ibqp)
488{
489 struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
490
491 atomic_inc(&iwqp->refcount);
492}
493
494/**
495 * i40iw_rem_ref - rem refcount for qp and free if 0
496 * @ibqp: iqarp qp
497 */
498void i40iw_rem_ref(struct ib_qp *ibqp)
499{
500 struct i40iw_qp *iwqp;
501 enum i40iw_status_code status;
502 struct i40iw_cqp_request *cqp_request;
503 struct cqp_commands_info *cqp_info;
504 struct i40iw_device *iwdev;
505 u32 qp_num;
996abf0a 506 unsigned long flags;
4e9042e6
FL		 507
508 iwqp = to_iwqp(ibqp);
996abf0a
IM		 509 iwdev = iwqp->iwdev;
510 spin_lock_irqsave(&iwdev->qptable_lock, flags);
511 if (!atomic_dec_and_test(&iwqp->refcount)) {
512 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
4e9042e6 513 return;
996abf0a 514 }
4e9042e6 515
4e9042e6
FL		 516 qp_num = iwqp->ibqp.qp_num;
517 iwdev->qp_table[qp_num] = NULL;
996abf0a 518 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
4e9042e6
FL		 519 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
520 if (!cqp_request)
521 return;
522
523 cqp_request->callback_fcn = i40iw_free_qp;
524 cqp_request->param = (void *)&iwqp->sc_qp;
525 cqp_info = &cqp_request->info;
526 cqp_info->cqp_cmd = OP_QP_DESTROY;
527 cqp_info->post_sq = 1;
528 cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
529 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
530 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
531 status = i40iw_handle_cqp_op(iwdev, cqp_request);
532 if (status)
533 i40iw_pr_err("CQP-OP Destroy QP fail");
534}
535
536/**
537 * i40iw_get_qp - get qp address
538 * @device: iwarp device
539 * @qpn: qp number
540 */
541struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
542{
543 struct i40iw_device *iwdev = to_iwdev(device);
544
545 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
546 return NULL;
547
548 return &iwdev->qp_table[qpn]->ibqp;
549}
550
551/**
552 * i40iw_debug_buf - print debug msg and buffer is mask set
553 * @dev: hardware control device structure
554 * @mask: mask to compare if to print debug buffer
555 * @buf: points buffer addr
556 * @size: saize of buffer to print
557 */
558void i40iw_debug_buf(struct i40iw_sc_dev *dev,
559 enum i40iw_debug_flag mask,
560 char *desc,
561 u64 *buf,
562 u32 size)
563{
564 u32 i;
565
566 if (!(dev->debug_mask & mask))
567 return;
568 i40iw_debug(dev, mask, "%s\n", desc);
569 i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
570 (unsigned long long)virt_to_phys(buf));
571
572 for (i = 0; i < size; i += 8)
573 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
574}
575
576/**
577 * i40iw_get_hw_addr - return hw addr
578 * @par: points to shared dev
579 */
580u8 __iomem *i40iw_get_hw_addr(void *par)
581{
582 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
583
584 return dev->hw->hw_addr;
585}
586
587/**
588 * i40iw_remove_head - return head entry and remove from list
589 * @list: list for entry
590 */
591void *i40iw_remove_head(struct list_head *list)
592{
593 struct list_head *entry;
594
595 if (list_empty(list))
596 return NULL;
597
598 entry = (void *)list->next;
599 list_del(entry);
600 return (void *)entry;
601}
602
603/**
604 * i40iw_allocate_dma_mem - Memory alloc helper fn
605 * @hw: pointer to the HW structure
606 * @mem: ptr to mem struct to fill out
607 * @size: size of memory requested
608 * @alignment: what to align the allocation to
609 */
610enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
611 struct i40iw_dma_mem *mem,
612 u64 size,
613 u32 alignment)
614{
615 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
616
617 if (!mem)
618 return I40IW_ERR_PARAM;
619 mem->size = ALIGN(size, alignment);
620 mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
621 (dma_addr_t *)&mem->pa, GFP_KERNEL);
622 if (!mem->va)
623 return I40IW_ERR_NO_MEMORY;
624 return 0;
625}
626
627/**
628 * i40iw_free_dma_mem - Memory free helper fn
629 * @hw: pointer to the HW structure
630 * @mem: ptr to mem struct to free
631 */
632void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
633{
634 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
635
636 if (!mem || !mem->va)
637 return;
638
639 dma_free_coherent(&pcidev->dev, mem->size,
640 mem->va, (dma_addr_t)mem->pa);
641 mem->va = NULL;
642}
643
644/**
645 * i40iw_allocate_virt_mem - virtual memory alloc helper fn
646 * @hw: pointer to the HW structure
647 * @mem: ptr to mem struct to fill out
648 * @size: size of memory requested
649 */
650enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
651 struct i40iw_virt_mem *mem,
652 u32 size)
653{
654 if (!mem)
655 return I40IW_ERR_PARAM;
656
657 mem->size = size;
658 mem->va = kzalloc(size, GFP_KERNEL);
659
660 if (mem->va)
661 return 0;
662 else
663 return I40IW_ERR_NO_MEMORY;
664}
665
666/**
667 * i40iw_free_virt_mem - virtual memory free helper fn
668 * @hw: pointer to the HW structure
669 * @mem: ptr to mem struct to free
670 */
671enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
672 struct i40iw_virt_mem *mem)
673{
674 if (!mem)
675 return I40IW_ERR_PARAM;
676 kfree(mem->va);
677 mem->va = NULL;
678 return 0;
679}
680
681/**
682 * i40iw_cqp_sds_cmd - create cqp command for sd
683 * @dev: hardware control device structure
684 * @sd_info: information for sd cqp
685 *
686 */
687enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
688 struct i40iw_update_sds_info *sdinfo)
689{
690 enum i40iw_status_code status;
691 struct i40iw_cqp_request *cqp_request;
692 struct cqp_commands_info *cqp_info;
693 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
694
695 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
696 if (!cqp_request)
697 return I40IW_ERR_NO_MEMORY;
698 cqp_info = &cqp_request->info;
699 memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
700 sizeof(cqp_info->in.u.update_pe_sds.info));
701 cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
702 cqp_info->post_sq = 1;
703 cqp_info->in.u.update_pe_sds.dev = dev;
704 cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
705 status = i40iw_handle_cqp_op(iwdev, cqp_request);
706 if (status)
707 i40iw_pr_err("CQP-OP Update SD's fail");
708 return status;
709}
710
711/**
712 * i40iw_term_modify_qp - modify qp for term message
713 * @qp: hardware control qp
714 * @next_state: qp's next state
715 * @term: terminate code
716 * @term_len: length
717 */
718void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
719{
720 struct i40iw_qp *iwqp;
721
722 iwqp = (struct i40iw_qp *)qp->back_qp;
723 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
724};
725
726/**
727 * i40iw_terminate_done - after terminate is completed
728 * @qp: hardware control qp
729 * @timeout_occurred: indicates if terminate timer expired
730 */
731void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
732{
733 struct i40iw_qp *iwqp;
734 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
735 u8 hte = 0;
736 bool first_time;
737 unsigned long flags;
738
739 iwqp = (struct i40iw_qp *)qp->back_qp;
740 spin_lock_irqsave(&iwqp->lock, flags);
741 if (iwqp->hte_added) {
742 iwqp->hte_added = 0;
743 hte = 1;
744 }
745 first_time = !(qp->term_flags & I40IW_TERM_DONE);
746 qp->term_flags |= I40IW_TERM_DONE;
747 spin_unlock_irqrestore(&iwqp->lock, flags);
748 if (first_time) {
749 if (!timeout_occurred)
750 i40iw_terminate_del_timer(qp);
751 else
752 next_iwarp_state = I40IW_QP_STATE_CLOSING;
753
754 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
755 i40iw_cm_disconn(iwqp);
756 }
757}
758
759/**
760 * i40iw_terminate_imeout - timeout happened
761 * @context: points to iwarp qp
762 */
763static void i40iw_terminate_timeout(unsigned long context)
764{
765 struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
766 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
767
768 i40iw_terminate_done(qp, 1);
769}
770
771/**
772 * i40iw_terminate_start_timer - start terminate timeout
773 * @qp: hardware control qp
774 */
775void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
776{
777 struct i40iw_qp *iwqp;
778
779 iwqp = (struct i40iw_qp *)qp->back_qp;
780 init_timer(&iwqp->terminate_timer);
781 iwqp->terminate_timer.function = i40iw_terminate_timeout;
782 iwqp->terminate_timer.expires = jiffies + HZ;
783 iwqp->terminate_timer.data = (unsigned long)iwqp;
784 add_timer(&iwqp->terminate_timer);
785}
786
787/**
788 * i40iw_terminate_del_timer - delete terminate timeout
789 * @qp: hardware control qp
790 */
791void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
792{
793 struct i40iw_qp *iwqp;
794
795 iwqp = (struct i40iw_qp *)qp->back_qp;
796 del_timer(&iwqp->terminate_timer);
797}
798
799/**
800 * i40iw_cqp_generic_worker - generic worker for cqp
801 * @work: work pointer
802 */
803static void i40iw_cqp_generic_worker(struct work_struct *work)
804{
805 struct i40iw_virtchnl_work_info *work_info =
806 &((struct virtchnl_work *)work)->work_info;
807
808 if (work_info->worker_vf_dev)
809 work_info->callback_fcn(work_info->worker_vf_dev);
810}
811
812/**
813 * i40iw_cqp_spawn_worker - spawn worket thread
814 * @iwdev: device struct pointer
815 * @work_info: work request info
816 * @iw_vf_idx: virtual function index
817 */
818void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
819 struct i40iw_virtchnl_work_info *work_info,
820 u32 iw_vf_idx)
821{
822 struct virtchnl_work *work;
823 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
824
825 work = &iwdev->virtchnl_w[iw_vf_idx];
826 memcpy(&work->work_info, work_info, sizeof(*work_info));
827 INIT_WORK(&work->work, i40iw_cqp_generic_worker);
828 queue_work(iwdev->virtchnl_wq, &work->work);
829}
830
831/**
832 * i40iw_cqp_manage_hmc_fcn_worker -
833 * @work: work pointer for hmc info
834 */
835static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
836{
837 struct i40iw_cqp_request *cqp_request =
838 ((struct virtchnl_work *)work)->cqp_request;
839 struct i40iw_ccq_cqe_info ccq_cqe_info;
840 struct i40iw_hmc_fcn_info *hmcfcninfo =
841 &cqp_request->info.in.u.manage_hmc_pm.info;
842 struct i40iw_device *iwdev =
843 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
844
845 ccq_cqe_info.cqp = NULL;
846 ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
847 ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
848 ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
849 ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
850 ccq_cqe_info.scratch = 0;
851 ccq_cqe_info.error = cqp_request->compl_info.error;
852 hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
853 hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
854 i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
855}
856
857/**
858 * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
859 * @cqp_request: cqp request info struct for hmc fun
860 * @unused: unused param of callback
861 */
862static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
863 u32 unused)
864{
865 struct virtchnl_work *work;
866 struct i40iw_hmc_fcn_info *hmcfcninfo =
867 &cqp_request->info.in.u.manage_hmc_pm.info;
868 struct i40iw_device *iwdev =
869 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
870 back_dev;
871
872 if (hmcfcninfo && hmcfcninfo->callback_fcn) {
873 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
874 atomic_inc(&cqp_request->refcount);
875 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
876 work->cqp_request = cqp_request;
877 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
878 queue_work(iwdev->virtchnl_wq, &work->work);
879 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
880 } else {
881 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
882 }
883}
884
885/**
886 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
887 * @dev: hardware control device structure
888 * @hmcfcninfo: info for hmc
889 */
890enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
891 struct i40iw_hmc_fcn_info *hmcfcninfo)
892{
893 enum i40iw_status_code status;
894 struct i40iw_cqp_request *cqp_request;
895 struct cqp_commands_info *cqp_info;
896 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
897
898 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
899 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
900 if (!cqp_request)
901 return I40IW_ERR_NO_MEMORY;
902 cqp_info = &cqp_request->info;
903 cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
904 cqp_request->param = hmcfcninfo;
905 memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
906 sizeof(*hmcfcninfo));
907 cqp_info->in.u.manage_hmc_pm.dev = dev;
908 cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
909 cqp_info->post_sq = 1;
910 cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
911 status = i40iw_handle_cqp_op(iwdev, cqp_request);
912 if (status)
913 i40iw_pr_err("CQP-OP Manage HMC fail");
914 return status;
915}
916
917/**
918 * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
919 * @iwdev: function device struct
920 * @values_mem: buffer for fpm
921 * @hmc_fn_id: function id for fpm
922 */
923enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
924 struct i40iw_dma_mem *values_mem,
925 u8 hmc_fn_id)
926{
927 enum i40iw_status_code status;
928 struct i40iw_cqp_request *cqp_request;
929 struct cqp_commands_info *cqp_info;
930 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
931
932 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
933 if (!cqp_request)
934 return I40IW_ERR_NO_MEMORY;
935 cqp_info = &cqp_request->info;
936 cqp_request->param = NULL;
937 cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
938 cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
939 cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
940 cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
941 cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
942 cqp_info->post_sq = 1;
943 cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
944 status = i40iw_handle_cqp_op(iwdev, cqp_request);
945 if (status)
946 i40iw_pr_err("CQP-OP Query FPM fail");
947 return status;
948}
949
950/**
951 * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
952 * @dev: hardware control device structure
953 * @values_mem: buffer with fpm values
954 * @hmc_fn_id: function id for fpm
955 */
956enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
957 struct i40iw_dma_mem *values_mem,
958 u8 hmc_fn_id)
959{
960 enum i40iw_status_code status;
961 struct i40iw_cqp_request *cqp_request;
962 struct cqp_commands_info *cqp_info;
963 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
964
965 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
966 if (!cqp_request)
967 return I40IW_ERR_NO_MEMORY;
968 cqp_info = &cqp_request->info;
969 cqp_request->param = NULL;
970 cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
971 cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
972 cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
973 cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
974 cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
975 cqp_info->post_sq = 1;
976 cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
977 status = i40iw_handle_cqp_op(iwdev, cqp_request);
978 if (status)
979 i40iw_pr_err("CQP-OP Commit FPM fail");
980 return status;
981}
982
983/**
984 * i40iw_vf_wait_vchnl_resp - wait for channel msg
985 * @iwdev: function's device struct
986 */
987enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
988{
989 struct i40iw_device *iwdev = dev->back_dev;
4e9042e6
FL		 990 int timeout_ret;
991
992 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
993 __func__, __LINE__, dev, iwdev);
f69c3331
IM		 994
995 atomic_set(&iwdev->vchnl_msgs, 2);
4e9042e6
FL		 996 timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
997 (atomic_read(&iwdev->vchnl_msgs) == 1),
998 I40IW_VCHNL_EVENT_TIMEOUT);
999 atomic_dec(&iwdev->vchnl_msgs);
1000 if (!timeout_ret) {
1001 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
f69c3331
IM		 1002 atomic_set(&iwdev->vchnl_msgs, 0);
1003 dev->vchnl_up = false;
1004 return I40IW_ERR_TIMEOUT;
4e9042e6 1005 }
f69c3331
IM		 1006 wake_up(&dev->vf_reqs);
1007 return 0;
4e9042e6
FL		 1008}
1009
1010/**
1011 * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1012 * @dev: hardware control device structure
1013 * @qp: hardware control qp
1014 */
1015void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1016{
1017 struct i40iw_qp_flush_info info;
1018 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1019
1020 i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1021 memset(&info, 0, sizeof(info));
1022 info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1023 info.generate_ae = true;
1024 info.ae_source = 0x3;
1025 (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1026}
1027
1028/**
1029 * i40iw_init_hash_desc - initialize hash for crc calculation
1030 * @desc: cryption type
1031 */
34abf9ed 1032enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
4e9042e6 1033{
34abf9ed
TN		 1034 struct crypto_shash *tfm;
1035 struct shash_desc *tdesc;
1036
1037 tfm = crypto_alloc_shash("crc32c", 0, 0);
1038 if (IS_ERR(tfm))
1039 return I40IW_ERR_MPA_CRC;
1040
1041 tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1042 GFP_KERNEL);
1043 if (!tdesc) {
1044 crypto_free_shash(tfm);
4e9042e6 1045 return I40IW_ERR_MPA_CRC;
34abf9ed
TN		 1046 }
1047 tdesc->tfm = tfm;
1048 *desc = tdesc;
1049
4e9042e6
FL		 1050 return 0;
1051}
1052
1053/**
1054 * i40iw_free_hash_desc - free hash desc
1055 * @desc: to be freed
1056 */
34abf9ed 1057void i40iw_free_hash_desc(struct shash_desc *desc)
4e9042e6 1058{
34abf9ed
TN		 1059 if (desc) {
1060 crypto_free_shash(desc->tfm);
1061 kfree(desc);
1062 }
4e9042e6
FL		 1063}
1064
1065/**
1066 * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1067 * @dev: hardware control device structure
1068 * @mem: buffer ptr for fpm to be allocated
1069 * @return: memory allocation status
1070 */
1071enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1072 struct i40iw_dma_mem *mem)
1073{
1074 enum i40iw_status_code status;
1075 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1076
1077 status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1078 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1079 return status;
1080}
1081
1082/**
1083 * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1084 * @desc: desc for hash
1085 * @addr: address of buffer for crc
1086 * @length: length of buffer
1087 * @value: value to be compared
1088 */
34abf9ed 1089enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
4e9042e6
FL		 1090 void *addr,
1091 u32 length,
1092 u32 value)
1093{
4e9042e6
FL		 1094 u32 crc = 0;
1095 int ret;
1096 enum i40iw_status_code ret_code = 0;
1097
34abf9ed
TN		 1098 crypto_shash_init(desc);
1099 ret = crypto_shash_update(desc, addr, length);
4e9042e6 1100 if (!ret)
34abf9ed 1101 crypto_shash_final(desc, (u8 *)&crc);
4e9042e6
FL		 1102 if (crc != value) {
1103 i40iw_pr_err("mpa crc check fail\n");
1104 ret_code = I40IW_ERR_MPA_CRC;
1105 }
1106 return ret_code;
1107}
1108
1109/**
1110 * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1111 * @dev: hardware control device structure
1112 * @buf: receive puda buffer on exception q
1113 */
1114struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1115 struct i40iw_puda_buf *buf)
1116{
1117 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1118 struct i40iw_qp *iwqp;
1119 struct i40iw_cm_node *cm_node;
1120 u32 loc_addr[4], rem_addr[4];
1121 u16 loc_port, rem_port;
1122 struct ipv6hdr *ip6h;
1123 struct iphdr *iph = (struct iphdr *)buf->iph;
1124 struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1125
1126 if (iph->version == 4) {
1127 memset(loc_addr, 0, sizeof(loc_addr));
1128 loc_addr[0] = ntohl(iph->daddr);
1129 memset(rem_addr, 0, sizeof(rem_addr));
1130 rem_addr[0] = ntohl(iph->saddr);
1131 } else {
1132 ip6h = (struct ipv6hdr *)buf->iph;
1133 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1134 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1135 }
1136 loc_port = ntohs(tcph->dest);
1137 rem_port = ntohs(tcph->source);
1138
1139 cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1140 loc_addr, false);
1141 if (!cm_node)
1142 return NULL;
1143 iwqp = cm_node->iwqp;
1144 return &iwqp->sc_qp;
1145}
1146
1147/**
1148 * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1149 * @buf: puda to update
1150 * @length: length of buffer
1151 * @seqnum: seq number for tcp
1152 */
1153void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1154{
1155 struct tcphdr *tcph;
1156 struct iphdr *iph;
1157 u16 iphlen;
1158 u16 packetsize;
1159 u8 *addr = (u8 *)buf->mem.va;
1160
1161 iphlen = (buf->ipv4) ? 20 : 40;
1162 iph = (struct iphdr *)(addr + buf->maclen);
1163 tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1164 packetsize = length + buf->tcphlen + iphlen;
1165
1166 iph->tot_len = htons(packetsize);
1167 tcph->seq = htonl(seqnum);
1168}
1169
1170/**
1171 * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1172 * @info: to get information
1173 * @buf: puda buffer
1174 */
1175enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1176 struct i40iw_puda_buf *buf)
1177{
1178 struct iphdr *iph;
1179 struct ipv6hdr *ip6h;
1180 struct tcphdr *tcph;
1181 u16 iphlen;
1182 u16 pkt_len;
1183 u8 *mem = (u8 *)buf->mem.va;
1184 struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1185
1186 if (ethh->h_proto == htons(0x8100)) {
1187 info->vlan_valid = true;
1188 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1189 }
1190 buf->maclen = (info->vlan_valid) ? 18 : 14;
1191 iphlen = (info->l3proto) ? 40 : 20;
1192 buf->ipv4 = (info->l3proto) ? false : true;
1193 buf->iph = mem + buf->maclen;
1194 iph = (struct iphdr *)buf->iph;
1195
1196 buf->tcph = buf->iph + iphlen;
1197 tcph = (struct tcphdr *)buf->tcph;
1198
1199 if (buf->ipv4) {
1200 pkt_len = ntohs(iph->tot_len);
1201 } else {
1202 ip6h = (struct ipv6hdr *)buf->iph;
1203 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1204 }
1205
1206 buf->totallen = pkt_len + buf->maclen;
1207
1208 if (info->payload_len < buf->totallen - 4) {
1209 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1210 info->payload_len, buf->totallen);
1211 return I40IW_ERR_INVALID_SIZE;
1212 }
1213
1214 buf->tcphlen = (tcph->doff) << 2;
1215 buf->datalen = pkt_len - iphlen - buf->tcphlen;
1216 buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1217 buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1218 buf->seqnum = ntohl(tcph->seq);
1219 return 0;
1220}
1221
1222/**
1223 * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1224 * @dev: hardware control device structure
1225 */
1226static void i40iw_hw_stats_timeout(unsigned long dev)
1227{
1228 struct i40iw_sc_dev *pf_dev = (struct i40iw_sc_dev *)dev;
1229 struct i40iw_dev_pestat *pf_devstat = &pf_dev->dev_pestat;
1230 struct i40iw_dev_pestat *vf_devstat = NULL;
1231 u16 iw_vf_idx;
1232 unsigned long flags;
1233
1234 /*PF*/
1235 pf_devstat->ops.iw_hw_stat_read_all(pf_devstat, &pf_devstat->hw_stats);
1236 for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1237 spin_lock_irqsave(&pf_devstat->stats_lock, flags);
1238 if (pf_dev->vf_dev[iw_vf_idx]) {
1239 if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1240 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->dev_pestat;
1241 vf_devstat->ops.iw_hw_stat_read_all(vf_devstat, &vf_devstat->hw_stats);
1242 }
1243 }
1244 spin_unlock_irqrestore(&pf_devstat->stats_lock, flags);
1245 }
1246
1247 mod_timer(&pf_devstat->stats_timer,
1248 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1249}
1250
1251/**
1252 * i40iw_hw_stats_start_timer - Start periodic stats timer
1253 * @dev: hardware control device structure
1254 */
1255void i40iw_hw_stats_start_timer(struct i40iw_sc_dev *dev)
1256{
1257 struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
1258
1259 init_timer(&devstat->stats_timer);
1260 devstat->stats_timer.function = i40iw_hw_stats_timeout;
1261 devstat->stats_timer.data = (unsigned long)dev;
1262 mod_timer(&devstat->stats_timer,
1263 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1264}
1265
1266/**
1267 * i40iw_hw_stats_del_timer - Delete periodic stats timer
1268 * @dev: hardware control device structure
1269 */
1270void i40iw_hw_stats_del_timer(struct i40iw_sc_dev *dev)
1271{
1272 struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
1273
1274 del_timer_sync(&devstat->stats_timer);
1275}
Linux 6.x block layer and io_uring tree(s)