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RDMA/i40iw: Add qp table lock around AE processing
[deliverable/linux.git] / drivers / infiniband / hw / i40iw / i40iw_utils.c
CommitLineData
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,
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;
996abf0a 509 unsigned long flags;
4e9042e6
FL		 510
511 iwqp = to_iwqp(ibqp);
996abf0a
IM		 512 iwdev = iwqp->iwdev;
513 spin_lock_irqsave(&iwdev->qptable_lock, flags);
514 if (!atomic_dec_and_test(&iwqp->refcount)) {
515 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
4e9042e6 516 return;
996abf0a 517 }
4e9042e6 518
4e9042e6
FL		 519 qp_num = iwqp->ibqp.qp_num;
520 iwdev->qp_table[qp_num] = NULL;
996abf0a 521 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
4e9042e6
FL		 522 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
523 if (!cqp_request)
524 return;
525
526 cqp_request->callback_fcn = i40iw_free_qp;
527 cqp_request->param = (void *)&iwqp->sc_qp;
528 cqp_info = &cqp_request->info;
529 cqp_info->cqp_cmd = OP_QP_DESTROY;
530 cqp_info->post_sq = 1;
531 cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
532 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
533 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
534 status = i40iw_handle_cqp_op(iwdev, cqp_request);
535 if (status)
536 i40iw_pr_err("CQP-OP Destroy QP fail");
537}
538
539/**
540 * i40iw_get_qp - get qp address
541 * @device: iwarp device
542 * @qpn: qp number
543 */
544struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
545{
546 struct i40iw_device *iwdev = to_iwdev(device);
547
548 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
549 return NULL;
550
551 return &iwdev->qp_table[qpn]->ibqp;
552}
553
554/**
555 * i40iw_debug_buf - print debug msg and buffer is mask set
556 * @dev: hardware control device structure
557 * @mask: mask to compare if to print debug buffer
558 * @buf: points buffer addr
559 * @size: saize of buffer to print
560 */
561void i40iw_debug_buf(struct i40iw_sc_dev *dev,
562 enum i40iw_debug_flag mask,
563 char *desc,
564 u64 *buf,
565 u32 size)
566{
567 u32 i;
568
569 if (!(dev->debug_mask & mask))
570 return;
571 i40iw_debug(dev, mask, "%s\n", desc);
572 i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
573 (unsigned long long)virt_to_phys(buf));
574
575 for (i = 0; i < size; i += 8)
576 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
577}
578
579/**
580 * i40iw_get_hw_addr - return hw addr
581 * @par: points to shared dev
582 */
583u8 __iomem *i40iw_get_hw_addr(void *par)
584{
585 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
586
587 return dev->hw->hw_addr;
588}
589
590/**
591 * i40iw_remove_head - return head entry and remove from list
592 * @list: list for entry
593 */
594void *i40iw_remove_head(struct list_head *list)
595{
596 struct list_head *entry;
597
598 if (list_empty(list))
599 return NULL;
600
601 entry = (void *)list->next;
602 list_del(entry);
603 return (void *)entry;
604}
605
606/**
607 * i40iw_allocate_dma_mem - Memory alloc helper fn
608 * @hw: pointer to the HW structure
609 * @mem: ptr to mem struct to fill out
610 * @size: size of memory requested
611 * @alignment: what to align the allocation to
612 */
613enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
614 struct i40iw_dma_mem *mem,
615 u64 size,
616 u32 alignment)
617{
618 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
619
620 if (!mem)
621 return I40IW_ERR_PARAM;
622 mem->size = ALIGN(size, alignment);
623 mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
624 (dma_addr_t *)&mem->pa, GFP_KERNEL);
625 if (!mem->va)
626 return I40IW_ERR_NO_MEMORY;
627 return 0;
628}
629
630/**
631 * i40iw_free_dma_mem - Memory free helper fn
632 * @hw: pointer to the HW structure
633 * @mem: ptr to mem struct to free
634 */
635void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
636{
637 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
638
639 if (!mem || !mem->va)
640 return;
641
642 dma_free_coherent(&pcidev->dev, mem->size,
643 mem->va, (dma_addr_t)mem->pa);
644 mem->va = NULL;
645}
646
647/**
648 * i40iw_allocate_virt_mem - virtual memory alloc helper fn
649 * @hw: pointer to the HW structure
650 * @mem: ptr to mem struct to fill out
651 * @size: size of memory requested
652 */
653enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
654 struct i40iw_virt_mem *mem,
655 u32 size)
656{
657 if (!mem)
658 return I40IW_ERR_PARAM;
659
660 mem->size = size;
661 mem->va = kzalloc(size, GFP_KERNEL);
662
663 if (mem->va)
664 return 0;
665 else
666 return I40IW_ERR_NO_MEMORY;
667}
668
669/**
670 * i40iw_free_virt_mem - virtual memory free helper fn
671 * @hw: pointer to the HW structure
672 * @mem: ptr to mem struct to free
673 */
674enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
675 struct i40iw_virt_mem *mem)
676{
677 if (!mem)
678 return I40IW_ERR_PARAM;
679 kfree(mem->va);
680 mem->va = NULL;
681 return 0;
682}
683
684/**
685 * i40iw_cqp_sds_cmd - create cqp command for sd
686 * @dev: hardware control device structure
687 * @sd_info: information for sd cqp
688 *
689 */
690enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
691 struct i40iw_update_sds_info *sdinfo)
692{
693 enum i40iw_status_code status;
694 struct i40iw_cqp_request *cqp_request;
695 struct cqp_commands_info *cqp_info;
696 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
697
698 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
699 if (!cqp_request)
700 return I40IW_ERR_NO_MEMORY;
701 cqp_info = &cqp_request->info;
702 memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
703 sizeof(cqp_info->in.u.update_pe_sds.info));
704 cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
705 cqp_info->post_sq = 1;
706 cqp_info->in.u.update_pe_sds.dev = dev;
707 cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
708 status = i40iw_handle_cqp_op(iwdev, cqp_request);
709 if (status)
710 i40iw_pr_err("CQP-OP Update SD's fail");
711 return status;
712}
713
714/**
715 * i40iw_term_modify_qp - modify qp for term message
716 * @qp: hardware control qp
717 * @next_state: qp's next state
718 * @term: terminate code
719 * @term_len: length
720 */
721void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
722{
723 struct i40iw_qp *iwqp;
724
725 iwqp = (struct i40iw_qp *)qp->back_qp;
726 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
727};
728
729/**
730 * i40iw_terminate_done - after terminate is completed
731 * @qp: hardware control qp
732 * @timeout_occurred: indicates if terminate timer expired
733 */
734void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
735{
736 struct i40iw_qp *iwqp;
737 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
738 u8 hte = 0;
739 bool first_time;
740 unsigned long flags;
741
742 iwqp = (struct i40iw_qp *)qp->back_qp;
743 spin_lock_irqsave(&iwqp->lock, flags);
744 if (iwqp->hte_added) {
745 iwqp->hte_added = 0;
746 hte = 1;
747 }
748 first_time = !(qp->term_flags & I40IW_TERM_DONE);
749 qp->term_flags |= I40IW_TERM_DONE;
750 spin_unlock_irqrestore(&iwqp->lock, flags);
751 if (first_time) {
752 if (!timeout_occurred)
753 i40iw_terminate_del_timer(qp);
754 else
755 next_iwarp_state = I40IW_QP_STATE_CLOSING;
756
757 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
758 i40iw_cm_disconn(iwqp);
759 }
760}
761
762/**
763 * i40iw_terminate_imeout - timeout happened
764 * @context: points to iwarp qp
765 */
766static void i40iw_terminate_timeout(unsigned long context)
767{
768 struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
769 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
770
771 i40iw_terminate_done(qp, 1);
772}
773
774/**
775 * i40iw_terminate_start_timer - start terminate timeout
776 * @qp: hardware control qp
777 */
778void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
779{
780 struct i40iw_qp *iwqp;
781
782 iwqp = (struct i40iw_qp *)qp->back_qp;
783 init_timer(&iwqp->terminate_timer);
784 iwqp->terminate_timer.function = i40iw_terminate_timeout;
785 iwqp->terminate_timer.expires = jiffies + HZ;
786 iwqp->terminate_timer.data = (unsigned long)iwqp;
787 add_timer(&iwqp->terminate_timer);
788}
789
790/**
791 * i40iw_terminate_del_timer - delete terminate timeout
792 * @qp: hardware control qp
793 */
794void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
795{
796 struct i40iw_qp *iwqp;
797
798 iwqp = (struct i40iw_qp *)qp->back_qp;
799 del_timer(&iwqp->terminate_timer);
800}
801
802/**
803 * i40iw_cqp_generic_worker - generic worker for cqp
804 * @work: work pointer
805 */
806static void i40iw_cqp_generic_worker(struct work_struct *work)
807{
808 struct i40iw_virtchnl_work_info *work_info =
809 &((struct virtchnl_work *)work)->work_info;
810
811 if (work_info->worker_vf_dev)
812 work_info->callback_fcn(work_info->worker_vf_dev);
813}
814
815/**
816 * i40iw_cqp_spawn_worker - spawn worket thread
817 * @iwdev: device struct pointer
818 * @work_info: work request info
819 * @iw_vf_idx: virtual function index
820 */
821void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
822 struct i40iw_virtchnl_work_info *work_info,
823 u32 iw_vf_idx)
824{
825 struct virtchnl_work *work;
826 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
827
828 work = &iwdev->virtchnl_w[iw_vf_idx];
829 memcpy(&work->work_info, work_info, sizeof(*work_info));
830 INIT_WORK(&work->work, i40iw_cqp_generic_worker);
831 queue_work(iwdev->virtchnl_wq, &work->work);
832}
833
834/**
835 * i40iw_cqp_manage_hmc_fcn_worker -
836 * @work: work pointer for hmc info
837 */
838static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
839{
840 struct i40iw_cqp_request *cqp_request =
841 ((struct virtchnl_work *)work)->cqp_request;
842 struct i40iw_ccq_cqe_info ccq_cqe_info;
843 struct i40iw_hmc_fcn_info *hmcfcninfo =
844 &cqp_request->info.in.u.manage_hmc_pm.info;
845 struct i40iw_device *iwdev =
846 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
847
848 ccq_cqe_info.cqp = NULL;
849 ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
850 ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
851 ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
852 ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
853 ccq_cqe_info.scratch = 0;
854 ccq_cqe_info.error = cqp_request->compl_info.error;
855 hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
856 hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
857 i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
858}
859
860/**
861 * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
862 * @cqp_request: cqp request info struct for hmc fun
863 * @unused: unused param of callback
864 */
865static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
866 u32 unused)
867{
868 struct virtchnl_work *work;
869 struct i40iw_hmc_fcn_info *hmcfcninfo =
870 &cqp_request->info.in.u.manage_hmc_pm.info;
871 struct i40iw_device *iwdev =
872 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
873 back_dev;
874
875 if (hmcfcninfo && hmcfcninfo->callback_fcn) {
876 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
877 atomic_inc(&cqp_request->refcount);
878 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
879 work->cqp_request = cqp_request;
880 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
881 queue_work(iwdev->virtchnl_wq, &work->work);
882 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
883 } else {
884 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
885 }
886}
887
888/**
889 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
890 * @dev: hardware control device structure
891 * @hmcfcninfo: info for hmc
892 */
893enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
894 struct i40iw_hmc_fcn_info *hmcfcninfo)
895{
896 enum i40iw_status_code status;
897 struct i40iw_cqp_request *cqp_request;
898 struct cqp_commands_info *cqp_info;
899 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
900
901 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
902 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
903 if (!cqp_request)
904 return I40IW_ERR_NO_MEMORY;
905 cqp_info = &cqp_request->info;
906 cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
907 cqp_request->param = hmcfcninfo;
908 memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
909 sizeof(*hmcfcninfo));
910 cqp_info->in.u.manage_hmc_pm.dev = dev;
911 cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
912 cqp_info->post_sq = 1;
913 cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
914 status = i40iw_handle_cqp_op(iwdev, cqp_request);
915 if (status)
916 i40iw_pr_err("CQP-OP Manage HMC fail");
917 return status;
918}
919
920/**
921 * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
922 * @iwdev: function device struct
923 * @values_mem: buffer for fpm
924 * @hmc_fn_id: function id for fpm
925 */
926enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
927 struct i40iw_dma_mem *values_mem,
928 u8 hmc_fn_id)
929{
930 enum i40iw_status_code status;
931 struct i40iw_cqp_request *cqp_request;
932 struct cqp_commands_info *cqp_info;
933 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
934
935 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
936 if (!cqp_request)
937 return I40IW_ERR_NO_MEMORY;
938 cqp_info = &cqp_request->info;
939 cqp_request->param = NULL;
940 cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
941 cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
942 cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
943 cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
944 cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
945 cqp_info->post_sq = 1;
946 cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
947 status = i40iw_handle_cqp_op(iwdev, cqp_request);
948 if (status)
949 i40iw_pr_err("CQP-OP Query FPM fail");
950 return status;
951}
952
953/**
954 * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
955 * @dev: hardware control device structure
956 * @values_mem: buffer with fpm values
957 * @hmc_fn_id: function id for fpm
958 */
959enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
960 struct i40iw_dma_mem *values_mem,
961 u8 hmc_fn_id)
962{
963 enum i40iw_status_code status;
964 struct i40iw_cqp_request *cqp_request;
965 struct cqp_commands_info *cqp_info;
966 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
967
968 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
969 if (!cqp_request)
970 return I40IW_ERR_NO_MEMORY;
971 cqp_info = &cqp_request->info;
972 cqp_request->param = NULL;
973 cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
974 cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
975 cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
976 cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
977 cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
978 cqp_info->post_sq = 1;
979 cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
980 status = i40iw_handle_cqp_op(iwdev, cqp_request);
981 if (status)
982 i40iw_pr_err("CQP-OP Commit FPM fail");
983 return status;
984}
985
986/**
987 * i40iw_vf_wait_vchnl_resp - wait for channel msg
988 * @iwdev: function's device struct
989 */
990enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
991{
992 struct i40iw_device *iwdev = dev->back_dev;
993 enum i40iw_status_code err_code = 0;
994 int timeout_ret;
995
996 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
997 __func__, __LINE__, dev, iwdev);
998 atomic_add(2, &iwdev->vchnl_msgs);
999 timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1000 (atomic_read(&iwdev->vchnl_msgs) == 1),
1001 I40IW_VCHNL_EVENT_TIMEOUT);
1002 atomic_dec(&iwdev->vchnl_msgs);
1003 if (!timeout_ret) {
1004 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1005 err_code = I40IW_ERR_TIMEOUT;
1006 }
1007 return err_code;
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 kernel - Deliverables
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