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1/*******************************************************************************
2*
3* Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
4*
5* This software is available to you under a choice of one of two
6* licenses. You may choose to be licensed under the terms of the GNU
7* General Public License (GPL) Version 2, available from the file
8* COPYING in the main directory of this source tree, or the
9* OpenFabrics.org BSD license below:
10*
11* Redistribution and use in source and binary forms, with or
12* without modification, are permitted provided that the following
13* conditions are met:
14*
15* - Redistributions of source code must retain the above
16* copyright notice, this list of conditions and the following
17* disclaimer.
18*
19* - Redistributions in binary form must reproduce the above
20* copyright notice, this list of conditions and the following
21* disclaimer in the documentation and/or other materials
22* provided with the distribution.
23*
24* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31* SOFTWARE.
32*
33*******************************************************************************/
34
35#include <linux/module.h>
36#include <linux/moduleparam.h>
37#include <linux/netdevice.h>
38#include <linux/etherdevice.h>
39#include <linux/ethtool.h>
40#include <linux/mii.h>
41#include <linux/if_vlan.h>
42#include <linux/crc32.h>
43#include <linux/in.h>
44#include <linux/ip.h>
45#include <linux/tcp.h>
46#include <linux/init.h>
47#include <linux/io.h>
48#include <asm/irq.h>
49#include <asm/byteorder.h>
50#include <net/netevent.h>
51#include <net/neighbour.h>
52#include "i40iw.h"
53
54/**
55 * i40iw_arp_table - manage arp table
56 * @iwdev: iwarp device
57 * @ip_addr: ip address for device
58 * @mac_addr: mac address ptr
59 * @action: modify, delete or add
60 */
61int i40iw_arp_table(struct i40iw_device *iwdev,
62 u32 *ip_addr,
63 bool ipv4,
64 u8 *mac_addr,
65 u32 action)
66{
67 int arp_index;
68 int err;
69 u32 ip[4];
70
71 if (ipv4) {
72 memset(ip, 0, sizeof(ip));
73 ip[0] = *ip_addr;
74 } else {
75 memcpy(ip, ip_addr, sizeof(ip));
76 }
77
78 for (arp_index = 0; (u32)arp_index < iwdev->arp_table_size; arp_index++)
79 if (memcmp(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)) == 0)
80 break;
81 switch (action) {
82 case I40IW_ARP_ADD:
83 if (arp_index != iwdev->arp_table_size)
84 return -1;
85
86 arp_index = 0;
87 err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps,
88 iwdev->arp_table_size,
89 (u32 *)&arp_index,
90 &iwdev->next_arp_index);
91
92 if (err)
93 return err;
94
95 memcpy(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip));
96 ether_addr_copy(iwdev->arp_table[arp_index].mac_addr, mac_addr);
97 break;
98 case I40IW_ARP_RESOLVE:
99 if (arp_index == iwdev->arp_table_size)
100 return -1;
101 break;
102 case I40IW_ARP_DELETE:
103 if (arp_index == iwdev->arp_table_size)
104 return -1;
105 memset(iwdev->arp_table[arp_index].ip_addr, 0,
106 sizeof(iwdev->arp_table[arp_index].ip_addr));
107 eth_zero_addr(iwdev->arp_table[arp_index].mac_addr);
108 i40iw_free_resource(iwdev, iwdev->allocated_arps, arp_index);
109 break;
110 default:
111 return -1;
112 }
113 return arp_index;
114}
115
116/**
117 * i40iw_wr32 - write 32 bits to hw register
118 * @hw: hardware information including registers
119 * @reg: register offset
120 * @value: vvalue to write to register
121 */
122inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value)
123{
124 writel(value, hw->hw_addr + reg);
125}
126
127/**
128 * i40iw_rd32 - read a 32 bit hw register
129 * @hw: hardware information including registers
130 * @reg: register offset
131 *
132 * Return value of register content
133 */
134inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
135{
136 return readl(hw->hw_addr + reg);
137}
138
139/**
140 * i40iw_inetaddr_event - system notifier for 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 u32 local_ipaddr;
156 u32 action = I40IW_ARP_ADD;
157
158 hdl = i40iw_find_netdev(event_netdev);
159 if (!hdl)
160 return NOTIFY_DONE;
161
162 iwdev = &hdl->device;
163 netdev = iwdev->ldev->netdev;
164 upper_dev = netdev_master_upper_dev_get(netdev);
165 if (netdev != event_netdev)
166 return NOTIFY_DONE;
167
168 if (upper_dev)
169 local_ipaddr = ntohl(
170 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
171 else
172 local_ipaddr = ntohl(ifa->ifa_address);
173 switch (event) {
174 case NETDEV_DOWN:
175 action = I40IW_ARP_DELETE;
176 /* Fall through */
177 case NETDEV_UP:
178 /* Fall through */
179 case NETDEV_CHANGEADDR:
180 i40iw_manage_arp_cache(iwdev,
181 netdev->dev_addr,
182 &local_ipaddr,
183 true,
184 action);
185 i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
186 (action == I40IW_ARP_ADD) ? true : false);
187 break;
188 default:
189 break;
190 }
191 return NOTIFY_DONE;
192}
193
194/**
195 * i40iw_inet6addr_event - system notifier for ipv6 netdev events
196 * @notfier: not used
197 * @event: event for notifier
198 * @ptr: if address
199 */
200int i40iw_inet6addr_event(struct notifier_block *notifier,
201 unsigned long event,
202 void *ptr)
203{
204 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
205 struct net_device *event_netdev = ifa->idev->dev;
206 struct net_device *netdev;
207 struct i40iw_device *iwdev;
208 struct i40iw_handler *hdl;
209 u32 local_ipaddr6[4];
210 u32 action = I40IW_ARP_ADD;
211
212 hdl = i40iw_find_netdev(event_netdev);
213 if (!hdl)
214 return NOTIFY_DONE;
215
216 iwdev = &hdl->device;
217 netdev = iwdev->ldev->netdev;
218 if (netdev != event_netdev)
219 return NOTIFY_DONE;
220
221 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
222 switch (event) {
223 case NETDEV_DOWN:
224 action = I40IW_ARP_DELETE;
225 /* Fall through */
226 case NETDEV_UP:
227 /* Fall through */
228 case NETDEV_CHANGEADDR:
229 i40iw_manage_arp_cache(iwdev,
230 netdev->dev_addr,
231 local_ipaddr6,
232 false,
233 action);
234 i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
235 (action == I40IW_ARP_ADD) ? true : false);
236 break;
237 default:
238 break;
239 }
240 return NOTIFY_DONE;
241}
242
243/**
244 * i40iw_net_event - system notifier for net events
245 * @notfier: not used
246 * @event: event for notifier
247 * @ptr: neighbor
248 */
249int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
250{
251 struct neighbour *neigh = ptr;
252 struct i40iw_device *iwdev;
253 struct i40iw_handler *iwhdl;
254 __be32 *p;
255 u32 local_ipaddr[4];
256
257 switch (event) {
258 case NETEVENT_NEIGH_UPDATE:
259 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
260 if (!iwhdl)
261 return NOTIFY_DONE;
262 iwdev = &iwhdl->device;
263 p = (__be32 *)neigh->primary_key;
264 i40iw_copy_ip_ntohl(local_ipaddr, p);
265 if (neigh->nud_state & NUD_VALID) {
266 i40iw_manage_arp_cache(iwdev,
267 neigh->ha,
268 local_ipaddr,
269 false,
270 I40IW_ARP_ADD);
271
272 } else {
273 i40iw_manage_arp_cache(iwdev,
274 neigh->ha,
275 local_ipaddr,
276 false,
277 I40IW_ARP_DELETE);
278 }
279 break;
280 default:
281 break;
282 }
283 return NOTIFY_DONE;
284}
285
286/**
287 * i40iw_get_cqp_request - get cqp struct
288 * @cqp: device cqp ptr
289 * @wait: cqp to be used in wait mode
290 */
291struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
292{
293 struct i40iw_cqp_request *cqp_request = NULL;
294 unsigned long flags;
295
296 spin_lock_irqsave(&cqp->req_lock, flags);
297 if (!list_empty(&cqp->cqp_avail_reqs)) {
298 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
299 struct i40iw_cqp_request, list);
300 list_del_init(&cqp_request->list);
301 }
302 spin_unlock_irqrestore(&cqp->req_lock, flags);
303 if (!cqp_request) {
304 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
305 if (cqp_request) {
306 cqp_request->dynamic = true;
307 INIT_LIST_HEAD(&cqp_request->list);
308 init_waitqueue_head(&cqp_request->waitq);
309 }
310 }
311 if (!cqp_request) {
312 i40iw_pr_err("CQP Request Fail: No Memory");
313 return NULL;
314 }
315
316 if (wait) {
317 atomic_set(&cqp_request->refcount, 2);
318 cqp_request->waiting = true;
319 } else {
320 atomic_set(&cqp_request->refcount, 1);
321 }
322 return cqp_request;
323}
324
325/**
326 * i40iw_free_cqp_request - free cqp request
327 * @cqp: cqp ptr
328 * @cqp_request: to be put back in cqp list
329 */
330void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
331{
332 unsigned long flags;
333
334 if (cqp_request->dynamic) {
335 kfree(cqp_request);
336 } else {
337 cqp_request->request_done = false;
338 cqp_request->callback_fcn = NULL;
339 cqp_request->waiting = false;
340
341 spin_lock_irqsave(&cqp->req_lock, flags);
342 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
343 spin_unlock_irqrestore(&cqp->req_lock, flags);
344 }
345}
346
347/**
348 * i40iw_put_cqp_request - dec ref count and free if 0
349 * @cqp: cqp ptr
350 * @cqp_request: to be put back in cqp list
351 */
352void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
353 struct i40iw_cqp_request *cqp_request)
354{
355 if (atomic_dec_and_test(&cqp_request->refcount))
356 i40iw_free_cqp_request(cqp, cqp_request);
357}
358
359/**
360 * i40iw_free_qp - callback after destroy cqp completes
361 * @cqp_request: cqp request for destroy qp
362 * @num: not used
363 */
364static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
365{
366 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
367 struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
368 struct i40iw_device *iwdev;
369 u32 qp_num = iwqp->ibqp.qp_num;
370
371 iwdev = iwqp->iwdev;
372
373 i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
374 i40iw_free_qp_resources(iwdev, iwqp, qp_num);
375 i40iw_rem_devusecount(iwdev);
376}
377
378/**
379 * i40iw_wait_event - wait for completion
380 * @iwdev: iwarp device
381 * @cqp_request: cqp request to wait
382 */
383static int i40iw_wait_event(struct i40iw_device *iwdev,
384 struct i40iw_cqp_request *cqp_request)
385{
386 struct cqp_commands_info *info = &cqp_request->info;
387 struct i40iw_cqp *iwcqp = &iwdev->cqp;
388 bool cqp_error = false;
389 int err_code = 0;
390 int timeout_ret = 0;
391
392 timeout_ret = wait_event_timeout(cqp_request->waitq,
393 cqp_request->request_done,
394 I40IW_EVENT_TIMEOUT);
395 if (!timeout_ret) {
396 i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n",
397 info->cqp_cmd, timeout_ret);
398 err_code = -ETIME;
399 if (!iwdev->reset) {
400 iwdev->reset = true;
401 i40iw_request_reset(iwdev);
402 }
403 goto done;
404 }
405 cqp_error = cqp_request->compl_info.error;
406 if (cqp_error) {
407 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
408 info->cqp_cmd, cqp_request->compl_info.maj_err_code,
409 cqp_request->compl_info.min_err_code);
410 err_code = -EPROTO;
411 goto done;
412 }
413done:
414 i40iw_put_cqp_request(iwcqp, cqp_request);
415 return err_code;
416}
417
418/**
419 * i40iw_handle_cqp_op - process cqp command
420 * @iwdev: iwarp device
421 * @cqp_request: cqp request to process
422 */
423enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
424 struct i40iw_cqp_request
425 *cqp_request)
426{
427 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
428 enum i40iw_status_code status;
429 struct cqp_commands_info *info = &cqp_request->info;
430 int err_code = 0;
431
432 if (iwdev->reset) {
433 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
434 return I40IW_ERR_CQP_COMPL_ERROR;
435 }
436
437 status = i40iw_process_cqp_cmd(dev, info);
438 if (status) {
439 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
440 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
441 return status;
442 }
443 if (cqp_request->waiting)
444 err_code = i40iw_wait_event(iwdev, cqp_request);
445 if (err_code)
446 status = I40IW_ERR_CQP_COMPL_ERROR;
447 return status;
448}
449
450/**
451 * i40iw_add_devusecount - add dev refcount
452 * @iwdev: dev for refcount
453 */
454void i40iw_add_devusecount(struct i40iw_device *iwdev)
455{
456 atomic64_inc(&iwdev->use_count);
457}
458
459/**
460 * i40iw_rem_devusecount - decrement refcount for dev
461 * @iwdev: device
462 */
463void i40iw_rem_devusecount(struct i40iw_device *iwdev)
464{
465 if (!atomic64_dec_and_test(&iwdev->use_count))
466 return;
467 wake_up(&iwdev->close_wq);
468}
469
470/**
471 * i40iw_add_pdusecount - add pd refcount
472 * @iwpd: pd for refcount
473 */
474void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
475{
476 atomic_inc(&iwpd->usecount);
477}
478
479/**
480 * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
481 * @iwpd: pd for refcount
482 * @iwdev: iwarp device
483 */
484void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
485{
486 if (!atomic_dec_and_test(&iwpd->usecount))
487 return;
488 i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
489 kfree(iwpd);
490}
491
492/**
493 * i40iw_add_ref - add refcount for qp
494 * @ibqp: iqarp qp
495 */
496void i40iw_add_ref(struct ib_qp *ibqp)
497{
498 struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
499
500 atomic_inc(&iwqp->refcount);
501}
502
503/**
504 * i40iw_rem_ref - rem refcount for qp and free if 0
505 * @ibqp: iqarp qp
506 */
507void i40iw_rem_ref(struct ib_qp *ibqp)
508{
509 struct i40iw_qp *iwqp;
510 enum i40iw_status_code status;
511 struct i40iw_cqp_request *cqp_request;
512 struct cqp_commands_info *cqp_info;
513 struct i40iw_device *iwdev;
514 u32 qp_num;
515 unsigned long flags;
516
517 iwqp = to_iwqp(ibqp);
518 iwdev = iwqp->iwdev;
519 spin_lock_irqsave(&iwdev->qptable_lock, flags);
520 if (!atomic_dec_and_test(&iwqp->refcount)) {
521 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
522 return;
523 }
524
525 qp_num = iwqp->ibqp.qp_num;
526 iwdev->qp_table[qp_num] = NULL;
527 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
528 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
529 if (!cqp_request)
530 return;
531
532 cqp_request->callback_fcn = i40iw_free_qp;
533 cqp_request->param = (void *)&iwqp->sc_qp;
534 cqp_info = &cqp_request->info;
535 cqp_info->cqp_cmd = OP_QP_DESTROY;
536 cqp_info->post_sq = 1;
537 cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
538 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
539 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
540 status = i40iw_handle_cqp_op(iwdev, cqp_request);
541 if (status)
542 i40iw_pr_err("CQP-OP Destroy QP fail");
543}
544
545/**
546 * i40iw_get_qp - get qp address
547 * @device: iwarp device
548 * @qpn: qp number
549 */
550struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
551{
552 struct i40iw_device *iwdev = to_iwdev(device);
553
554 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
555 return NULL;
556
557 return &iwdev->qp_table[qpn]->ibqp;
558}
559
560/**
561 * i40iw_debug_buf - print debug msg and buffer is mask set
562 * @dev: hardware control device structure
563 * @mask: mask to compare if to print debug buffer
564 * @buf: points buffer addr
565 * @size: saize of buffer to print
566 */
567void i40iw_debug_buf(struct i40iw_sc_dev *dev,
568 enum i40iw_debug_flag mask,
569 char *desc,
570 u64 *buf,
571 u32 size)
572{
573 u32 i;
574
575 if (!(dev->debug_mask & mask))
576 return;
577 i40iw_debug(dev, mask, "%s\n", desc);
578 i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
579 (unsigned long long)virt_to_phys(buf));
580
581 for (i = 0; i < size; i += 8)
582 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
583}
584
585/**
586 * i40iw_get_hw_addr - return hw addr
587 * @par: points to shared dev
588 */
589u8 __iomem *i40iw_get_hw_addr(void *par)
590{
591 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
592
593 return dev->hw->hw_addr;
594}
595
596/**
597 * i40iw_remove_head - return head entry and remove from list
598 * @list: list for entry
599 */
600void *i40iw_remove_head(struct list_head *list)
601{
602 struct list_head *entry;
603
604 if (list_empty(list))
605 return NULL;
606
607 entry = (void *)list->next;
608 list_del(entry);
609 return (void *)entry;
610}
611
612/**
613 * i40iw_allocate_dma_mem - Memory alloc helper fn
614 * @hw: pointer to the HW structure
615 * @mem: ptr to mem struct to fill out
616 * @size: size of memory requested
617 * @alignment: what to align the allocation to
618 */
619enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
620 struct i40iw_dma_mem *mem,
621 u64 size,
622 u32 alignment)
623{
624 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
625
626 if (!mem)
627 return I40IW_ERR_PARAM;
628 mem->size = ALIGN(size, alignment);
629 mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
630 (dma_addr_t *)&mem->pa, GFP_KERNEL);
631 if (!mem->va)
632 return I40IW_ERR_NO_MEMORY;
633 return 0;
634}
635
636/**
637 * i40iw_free_dma_mem - Memory free helper fn
638 * @hw: pointer to the HW structure
639 * @mem: ptr to mem struct to free
640 */
641void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
642{
643 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
644
645 if (!mem || !mem->va)
646 return;
647
648 dma_free_coherent(&pcidev->dev, mem->size,
649 mem->va, (dma_addr_t)mem->pa);
650 mem->va = NULL;
651}
652
653/**
654 * i40iw_allocate_virt_mem - virtual memory alloc helper fn
655 * @hw: pointer to the HW structure
656 * @mem: ptr to mem struct to fill out
657 * @size: size of memory requested
658 */
659enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
660 struct i40iw_virt_mem *mem,
661 u32 size)
662{
663 if (!mem)
664 return I40IW_ERR_PARAM;
665
666 mem->size = size;
667 mem->va = kzalloc(size, GFP_KERNEL);
668
669 if (mem->va)
670 return 0;
671 else
672 return I40IW_ERR_NO_MEMORY;
673}
674
675/**
676 * i40iw_free_virt_mem - virtual memory free helper fn
677 * @hw: pointer to the HW structure
678 * @mem: ptr to mem struct to free
679 */
680enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
681 struct i40iw_virt_mem *mem)
682{
683 if (!mem)
684 return I40IW_ERR_PARAM;
685 /*
686 * mem->va points to the parent of mem, so both mem and mem->va
687 * can not be touched once mem->va is freed
688 */
689 kfree(mem->va);
690 return 0;
691}
692
693/**
694 * i40iw_cqp_sds_cmd - create cqp command for sd
695 * @dev: hardware control device structure
696 * @sd_info: information for sd cqp
697 *
698 */
699enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
700 struct i40iw_update_sds_info *sdinfo)
701{
702 enum i40iw_status_code status;
703 struct i40iw_cqp_request *cqp_request;
704 struct cqp_commands_info *cqp_info;
705 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
706
707 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
708 if (!cqp_request)
709 return I40IW_ERR_NO_MEMORY;
710 cqp_info = &cqp_request->info;
711 memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
712 sizeof(cqp_info->in.u.update_pe_sds.info));
713 cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
714 cqp_info->post_sq = 1;
715 cqp_info->in.u.update_pe_sds.dev = dev;
716 cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
717 status = i40iw_handle_cqp_op(iwdev, cqp_request);
718 if (status)
719 i40iw_pr_err("CQP-OP Update SD's fail");
720 return status;
721}
722
723/**
724 * i40iw_qp_suspend_resume - cqp command for suspend/resume
725 * @dev: hardware control device structure
726 * @qp: hardware control qp
727 * @suspend: flag if suspend or resume
728 */
729void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
730{
731 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
732 struct i40iw_cqp_request *cqp_request;
733 struct i40iw_sc_cqp *cqp = dev->cqp;
734 struct cqp_commands_info *cqp_info;
735 enum i40iw_status_code status;
736
737 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
738 if (!cqp_request)
739 return;
740
741 cqp_info = &cqp_request->info;
742 cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
743 cqp_info->in.u.suspend_resume.cqp = cqp;
744 cqp_info->in.u.suspend_resume.qp = qp;
745 cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
746 status = i40iw_handle_cqp_op(iwdev, cqp_request);
747 if (status)
748 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
749}
750
751/**
752 * i40iw_qp_mss_modify - modify mss for qp
753 * @dev: hardware control device structure
754 * @qp: hardware control qp
755 */
756void i40iw_qp_mss_modify(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
757{
758 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
759 struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
760 struct i40iw_modify_qp_info info;
761
762 memset(&info, 0, sizeof(info));
763 info.mss_change = true;
764 info.new_mss = qp->vsi->mss;
765 i40iw_hw_modify_qp(iwdev, iwqp, &info, false);
766}
767
768/**
769 * i40iw_term_modify_qp - modify qp for term message
770 * @qp: hardware control qp
771 * @next_state: qp's next state
772 * @term: terminate code
773 * @term_len: length
774 */
775void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
776{
777 struct i40iw_qp *iwqp;
778
779 iwqp = (struct i40iw_qp *)qp->back_qp;
780 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
781};
782
783/**
784 * i40iw_terminate_done - after terminate is completed
785 * @qp: hardware control qp
786 * @timeout_occurred: indicates if terminate timer expired
787 */
788void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
789{
790 struct i40iw_qp *iwqp;
791 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
792 u8 hte = 0;
793 bool first_time;
794 unsigned long flags;
795
796 iwqp = (struct i40iw_qp *)qp->back_qp;
797 spin_lock_irqsave(&iwqp->lock, flags);
798 if (iwqp->hte_added) {
799 iwqp->hte_added = 0;
800 hte = 1;
801 }
802 first_time = !(qp->term_flags & I40IW_TERM_DONE);
803 qp->term_flags |= I40IW_TERM_DONE;
804 spin_unlock_irqrestore(&iwqp->lock, flags);
805 if (first_time) {
806 if (!timeout_occurred)
807 i40iw_terminate_del_timer(qp);
808 else
809 next_iwarp_state = I40IW_QP_STATE_CLOSING;
810
811 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
812 i40iw_cm_disconn(iwqp);
813 }
814}
815
816/**
817 * i40iw_terminate_imeout - timeout happened
818 * @context: points to iwarp qp
819 */
820static void i40iw_terminate_timeout(unsigned long context)
821{
822 struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
823 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
824
825 i40iw_terminate_done(qp, 1);
826 i40iw_rem_ref(&iwqp->ibqp);
827}
828
829/**
830 * i40iw_terminate_start_timer - start terminate timeout
831 * @qp: hardware control qp
832 */
833void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
834{
835 struct i40iw_qp *iwqp;
836
837 iwqp = (struct i40iw_qp *)qp->back_qp;
838 i40iw_add_ref(&iwqp->ibqp);
839 init_timer(&iwqp->terminate_timer);
840 iwqp->terminate_timer.function = i40iw_terminate_timeout;
841 iwqp->terminate_timer.expires = jiffies + HZ;
842 iwqp->terminate_timer.data = (unsigned long)iwqp;
843 add_timer(&iwqp->terminate_timer);
844}
845
846/**
847 * i40iw_terminate_del_timer - delete terminate timeout
848 * @qp: hardware control qp
849 */
850void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
851{
852 struct i40iw_qp *iwqp;
853
854 iwqp = (struct i40iw_qp *)qp->back_qp;
855 if (del_timer(&iwqp->terminate_timer))
856 i40iw_rem_ref(&iwqp->ibqp);
857}
858
859/**
860 * i40iw_cqp_generic_worker - generic worker for cqp
861 * @work: work pointer
862 */
863static void i40iw_cqp_generic_worker(struct work_struct *work)
864{
865 struct i40iw_virtchnl_work_info *work_info =
866 &((struct virtchnl_work *)work)->work_info;
867
868 if (work_info->worker_vf_dev)
869 work_info->callback_fcn(work_info->worker_vf_dev);
870}
871
872/**
873 * i40iw_cqp_spawn_worker - spawn worket thread
874 * @iwdev: device struct pointer
875 * @work_info: work request info
876 * @iw_vf_idx: virtual function index
877 */
878void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
879 struct i40iw_virtchnl_work_info *work_info,
880 u32 iw_vf_idx)
881{
882 struct virtchnl_work *work;
883 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
884
885 work = &iwdev->virtchnl_w[iw_vf_idx];
886 memcpy(&work->work_info, work_info, sizeof(*work_info));
887 INIT_WORK(&work->work, i40iw_cqp_generic_worker);
888 queue_work(iwdev->virtchnl_wq, &work->work);
889}
890
891/**
892 * i40iw_cqp_manage_hmc_fcn_worker -
893 * @work: work pointer for hmc info
894 */
895static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
896{
897 struct i40iw_cqp_request *cqp_request =
898 ((struct virtchnl_work *)work)->cqp_request;
899 struct i40iw_ccq_cqe_info ccq_cqe_info;
900 struct i40iw_hmc_fcn_info *hmcfcninfo =
901 &cqp_request->info.in.u.manage_hmc_pm.info;
902 struct i40iw_device *iwdev =
903 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
904
905 ccq_cqe_info.cqp = NULL;
906 ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
907 ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
908 ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
909 ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
910 ccq_cqe_info.scratch = 0;
911 ccq_cqe_info.error = cqp_request->compl_info.error;
912 hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
913 hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
914 i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
915}
916
917/**
918 * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
919 * @cqp_request: cqp request info struct for hmc fun
920 * @unused: unused param of callback
921 */
922static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
923 u32 unused)
924{
925 struct virtchnl_work *work;
926 struct i40iw_hmc_fcn_info *hmcfcninfo =
927 &cqp_request->info.in.u.manage_hmc_pm.info;
928 struct i40iw_device *iwdev =
929 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
930 back_dev;
931
932 if (hmcfcninfo && hmcfcninfo->callback_fcn) {
933 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
934 atomic_inc(&cqp_request->refcount);
935 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
936 work->cqp_request = cqp_request;
937 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
938 queue_work(iwdev->virtchnl_wq, &work->work);
939 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
940 } else {
941 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
942 }
943}
944
945/**
946 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
947 * @dev: hardware control device structure
948 * @hmcfcninfo: info for hmc
949 */
950enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
951 struct i40iw_hmc_fcn_info *hmcfcninfo)
952{
953 enum i40iw_status_code status;
954 struct i40iw_cqp_request *cqp_request;
955 struct cqp_commands_info *cqp_info;
956 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
957
958 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
959 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
960 if (!cqp_request)
961 return I40IW_ERR_NO_MEMORY;
962 cqp_info = &cqp_request->info;
963 cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
964 cqp_request->param = hmcfcninfo;
965 memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
966 sizeof(*hmcfcninfo));
967 cqp_info->in.u.manage_hmc_pm.dev = dev;
968 cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
969 cqp_info->post_sq = 1;
970 cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
971 status = i40iw_handle_cqp_op(iwdev, cqp_request);
972 if (status)
973 i40iw_pr_err("CQP-OP Manage HMC fail");
974 return status;
975}
976
977/**
978 * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
979 * @iwdev: function device struct
980 * @values_mem: buffer for fpm
981 * @hmc_fn_id: function id for fpm
982 */
983enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
984 struct i40iw_dma_mem *values_mem,
985 u8 hmc_fn_id)
986{
987 enum i40iw_status_code status;
988 struct i40iw_cqp_request *cqp_request;
989 struct cqp_commands_info *cqp_info;
990 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
991
992 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
993 if (!cqp_request)
994 return I40IW_ERR_NO_MEMORY;
995 cqp_info = &cqp_request->info;
996 cqp_request->param = NULL;
997 cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
998 cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
999 cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
1000 cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
1001 cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
1002 cqp_info->post_sq = 1;
1003 cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
1004 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1005 if (status)
1006 i40iw_pr_err("CQP-OP Query FPM fail");
1007 return status;
1008}
1009
1010/**
1011 * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
1012 * @dev: hardware control device structure
1013 * @values_mem: buffer with fpm values
1014 * @hmc_fn_id: function id for fpm
1015 */
1016enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1017 struct i40iw_dma_mem *values_mem,
1018 u8 hmc_fn_id)
1019{
1020 enum i40iw_status_code status;
1021 struct i40iw_cqp_request *cqp_request;
1022 struct cqp_commands_info *cqp_info;
1023 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1024
1025 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1026 if (!cqp_request)
1027 return I40IW_ERR_NO_MEMORY;
1028 cqp_info = &cqp_request->info;
1029 cqp_request->param = NULL;
1030 cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
1031 cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
1032 cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
1033 cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
1034 cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
1035 cqp_info->post_sq = 1;
1036 cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
1037 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1038 if (status)
1039 i40iw_pr_err("CQP-OP Commit FPM fail");
1040 return status;
1041}
1042
1043/**
1044 * i40iw_vf_wait_vchnl_resp - wait for channel msg
1045 * @iwdev: function's device struct
1046 */
1047enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1048{
1049 struct i40iw_device *iwdev = dev->back_dev;
1050 int timeout_ret;
1051
1052 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1053 __func__, __LINE__, dev, iwdev);
1054
1055 atomic_set(&iwdev->vchnl_msgs, 2);
1056 timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1057 (atomic_read(&iwdev->vchnl_msgs) == 1),
1058 I40IW_VCHNL_EVENT_TIMEOUT);
1059 atomic_dec(&iwdev->vchnl_msgs);
1060 if (!timeout_ret) {
1061 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1062 atomic_set(&iwdev->vchnl_msgs, 0);
1063 dev->vchnl_up = false;
1064 return I40IW_ERR_TIMEOUT;
1065 }
1066 wake_up(&dev->vf_reqs);
1067 return 0;
1068}
1069
1070/**
1071 * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1072 * @dev: device pointer
1073 * @cq: pointer to created cq
1074 */
1075enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1076 struct i40iw_sc_cq *cq)
1077{
1078 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1079 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1080 struct i40iw_cqp_request *cqp_request;
1081 struct cqp_commands_info *cqp_info;
1082 enum i40iw_status_code status;
1083
1084 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1085 if (!cqp_request)
1086 return I40IW_ERR_NO_MEMORY;
1087
1088 cqp_info = &cqp_request->info;
1089 cqp_info->cqp_cmd = OP_CQ_CREATE;
1090 cqp_info->post_sq = 1;
1091 cqp_info->in.u.cq_create.cq = cq;
1092 cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1093 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1094 if (status)
1095 i40iw_pr_err("CQP-OP Create QP fail");
1096
1097 return status;
1098}
1099
1100/**
1101 * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1102 * @dev: device pointer
1103 * @qp: pointer to created qp
1104 */
1105enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1106 struct i40iw_sc_qp *qp)
1107{
1108 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1109 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1110 struct i40iw_cqp_request *cqp_request;
1111 struct cqp_commands_info *cqp_info;
1112 struct i40iw_create_qp_info *qp_info;
1113 enum i40iw_status_code status;
1114
1115 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1116 if (!cqp_request)
1117 return I40IW_ERR_NO_MEMORY;
1118
1119 cqp_info = &cqp_request->info;
1120 qp_info = &cqp_request->info.in.u.qp_create.info;
1121
1122 memset(qp_info, 0, sizeof(*qp_info));
1123
1124 qp_info->cq_num_valid = true;
1125 qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
1126
1127 cqp_info->cqp_cmd = OP_QP_CREATE;
1128 cqp_info->post_sq = 1;
1129 cqp_info->in.u.qp_create.qp = qp;
1130 cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1131 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1132 if (status)
1133 i40iw_pr_err("CQP-OP QP create fail");
1134 return status;
1135}
1136
1137/**
1138 * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1139 * @dev: device pointer
1140 * @cq: pointer to cq
1141 */
1142void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1143{
1144 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1145
1146 i40iw_cq_wq_destroy(iwdev, cq);
1147}
1148
1149/**
1150 * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1151 * @dev: device pointer
1152 * @qp: pointer to qp
1153 */
1154void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1155{
1156 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1157 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1158 struct i40iw_cqp_request *cqp_request;
1159 struct cqp_commands_info *cqp_info;
1160 enum i40iw_status_code status;
1161
1162 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1163 if (!cqp_request)
1164 return;
1165
1166 cqp_info = &cqp_request->info;
1167 memset(cqp_info, 0, sizeof(*cqp_info));
1168
1169 cqp_info->cqp_cmd = OP_QP_DESTROY;
1170 cqp_info->post_sq = 1;
1171 cqp_info->in.u.qp_destroy.qp = qp;
1172 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1173 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1174 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1175 if (status)
1176 i40iw_pr_err("CQP QP_DESTROY fail");
1177}
1178
1179
1180/**
1181 * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1182 * @dev: hardware control device structure
1183 * @qp: hardware control qp
1184 */
1185void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1186{
1187 struct i40iw_qp_flush_info info;
1188 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1189
1190 i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1191 memset(&info, 0, sizeof(info));
1192 info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1193 info.generate_ae = true;
1194 info.ae_source = 0x3;
1195 (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1196}
1197
1198/**
1199 * i40iw_init_hash_desc - initialize hash for crc calculation
1200 * @desc: cryption type
1201 */
1202enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1203{
1204 struct crypto_shash *tfm;
1205 struct shash_desc *tdesc;
1206
1207 tfm = crypto_alloc_shash("crc32c", 0, 0);
1208 if (IS_ERR(tfm))
1209 return I40IW_ERR_MPA_CRC;
1210
1211 tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1212 GFP_KERNEL);
1213 if (!tdesc) {
1214 crypto_free_shash(tfm);
1215 return I40IW_ERR_MPA_CRC;
1216 }
1217 tdesc->tfm = tfm;
1218 *desc = tdesc;
1219
1220 return 0;
1221}
1222
1223/**
1224 * i40iw_free_hash_desc - free hash desc
1225 * @desc: to be freed
1226 */
1227void i40iw_free_hash_desc(struct shash_desc *desc)
1228{
1229 if (desc) {
1230 crypto_free_shash(desc->tfm);
1231 kfree(desc);
1232 }
1233}
1234
1235/**
1236 * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1237 * @dev: hardware control device structure
1238 * @mem: buffer ptr for fpm to be allocated
1239 * @return: memory allocation status
1240 */
1241enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1242 struct i40iw_dma_mem *mem)
1243{
1244 enum i40iw_status_code status;
1245 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1246
1247 status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1248 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1249 return status;
1250}
1251
1252/**
1253 * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1254 * @desc: desc for hash
1255 * @addr: address of buffer for crc
1256 * @length: length of buffer
1257 * @value: value to be compared
1258 */
1259enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1260 void *addr,
1261 u32 length,
1262 u32 value)
1263{
1264 u32 crc = 0;
1265 int ret;
1266 enum i40iw_status_code ret_code = 0;
1267
1268 crypto_shash_init(desc);
1269 ret = crypto_shash_update(desc, addr, length);
1270 if (!ret)
1271 crypto_shash_final(desc, (u8 *)&crc);
1272 if (crc != value) {
1273 i40iw_pr_err("mpa crc check fail\n");
1274 ret_code = I40IW_ERR_MPA_CRC;
1275 }
1276 return ret_code;
1277}
1278
1279/**
1280 * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1281 * @dev: hardware control device structure
1282 * @buf: receive puda buffer on exception q
1283 */
1284struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1285 struct i40iw_puda_buf *buf)
1286{
1287 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1288 struct i40iw_qp *iwqp;
1289 struct i40iw_cm_node *cm_node;
1290 u32 loc_addr[4], rem_addr[4];
1291 u16 loc_port, rem_port;
1292 struct ipv6hdr *ip6h;
1293 struct iphdr *iph = (struct iphdr *)buf->iph;
1294 struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1295
1296 if (iph->version == 4) {
1297 memset(loc_addr, 0, sizeof(loc_addr));
1298 loc_addr[0] = ntohl(iph->daddr);
1299 memset(rem_addr, 0, sizeof(rem_addr));
1300 rem_addr[0] = ntohl(iph->saddr);
1301 } else {
1302 ip6h = (struct ipv6hdr *)buf->iph;
1303 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1304 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1305 }
1306 loc_port = ntohs(tcph->dest);
1307 rem_port = ntohs(tcph->source);
1308
1309 cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1310 loc_addr, false);
1311 if (!cm_node)
1312 return NULL;
1313 iwqp = cm_node->iwqp;
1314 return &iwqp->sc_qp;
1315}
1316
1317/**
1318 * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1319 * @buf: puda to update
1320 * @length: length of buffer
1321 * @seqnum: seq number for tcp
1322 */
1323void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1324{
1325 struct tcphdr *tcph;
1326 struct iphdr *iph;
1327 u16 iphlen;
1328 u16 packetsize;
1329 u8 *addr = (u8 *)buf->mem.va;
1330
1331 iphlen = (buf->ipv4) ? 20 : 40;
1332 iph = (struct iphdr *)(addr + buf->maclen);
1333 tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1334 packetsize = length + buf->tcphlen + iphlen;
1335
1336 iph->tot_len = htons(packetsize);
1337 tcph->seq = htonl(seqnum);
1338}
1339
1340/**
1341 * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1342 * @info: to get information
1343 * @buf: puda buffer
1344 */
1345enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1346 struct i40iw_puda_buf *buf)
1347{
1348 struct iphdr *iph;
1349 struct ipv6hdr *ip6h;
1350 struct tcphdr *tcph;
1351 u16 iphlen;
1352 u16 pkt_len;
1353 u8 *mem = (u8 *)buf->mem.va;
1354 struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1355
1356 if (ethh->h_proto == htons(0x8100)) {
1357 info->vlan_valid = true;
1358 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1359 }
1360 buf->maclen = (info->vlan_valid) ? 18 : 14;
1361 iphlen = (info->l3proto) ? 40 : 20;
1362 buf->ipv4 = (info->l3proto) ? false : true;
1363 buf->iph = mem + buf->maclen;
1364 iph = (struct iphdr *)buf->iph;
1365
1366 buf->tcph = buf->iph + iphlen;
1367 tcph = (struct tcphdr *)buf->tcph;
1368
1369 if (buf->ipv4) {
1370 pkt_len = ntohs(iph->tot_len);
1371 } else {
1372 ip6h = (struct ipv6hdr *)buf->iph;
1373 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1374 }
1375
1376 buf->totallen = pkt_len + buf->maclen;
1377
1378 if (info->payload_len < buf->totallen) {
1379 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1380 info->payload_len, buf->totallen);
1381 return I40IW_ERR_INVALID_SIZE;
1382 }
1383
1384 buf->tcphlen = (tcph->doff) << 2;
1385 buf->datalen = pkt_len - iphlen - buf->tcphlen;
1386 buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1387 buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1388 buf->seqnum = ntohl(tcph->seq);
1389 return 0;
1390}
1391
1392/**
1393 * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1394 * @vsi: pointer to the vsi structure
1395 */
1396static void i40iw_hw_stats_timeout(unsigned long vsi)
1397{
1398 struct i40iw_sc_vsi *sc_vsi = (struct i40iw_sc_vsi *)vsi;
1399 struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
1400 struct i40iw_vsi_pestat *pf_devstat = sc_vsi->pestat;
1401 struct i40iw_vsi_pestat *vf_devstat = NULL;
1402 u16 iw_vf_idx;
1403 unsigned long flags;
1404
1405 /*PF*/
1406 i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
1407
1408 for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1409 spin_lock_irqsave(&pf_devstat->lock, flags);
1410 if (pf_dev->vf_dev[iw_vf_idx]) {
1411 if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1412 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
1413 i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
1414 }
1415 }
1416 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1417 }
1418
1419 mod_timer(&pf_devstat->stats_timer,
1420 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1421}
1422
1423/**
1424 * i40iw_hw_stats_start_timer - Start periodic stats timer
1425 * @vsi: pointer to the vsi structure
1426 */
1427void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1428{
1429 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1430
1431 init_timer(&devstat->stats_timer);
1432 devstat->stats_timer.function = i40iw_hw_stats_timeout;
1433 devstat->stats_timer.data = (unsigned long)vsi;
1434 mod_timer(&devstat->stats_timer,
1435 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1436}
1437
1438/**
1439 * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1440 * @vsi: pointer to the vsi structure
1441 */
1442void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1443{
1444 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1445
1446 del_timer_sync(&devstat->stats_timer);
1447}