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