1 /*******************************************************************************
3 * Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
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:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
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.
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
33 *******************************************************************************/
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>
45 #include <linux/tcp.h>
46 #include <linux/init.h>
49 #include <asm/byteorder.h>
50 #include <net/netevent.h>
51 #include <net/neighbour.h>
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
61 int i40iw_arp_table(struct i40iw_device *iwdev,
72 memset(ip, 0, sizeof(ip));
75 memcpy(ip, ip_addr, sizeof(ip));
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)
83 if (arp_index != iwdev->arp_table_size)
87 err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps,
88 iwdev->arp_table_size,
90 &iwdev->next_arp_index);
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);
98 case I40IW_ARP_RESOLVE:
99 if (arp_index == iwdev->arp_table_size)
102 case I40IW_ARP_DELETE:
103 if (arp_index == iwdev->arp_table_size)
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);
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
122 inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value)
124 writel(value, hw->hw_addr + reg);
128 * i40iw_rd32 - read a 32 bit hw register
129 * @hw: hardware information including registers
130 * @reg: register offset
132 * Return value of register content
134 inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
136 return readl(hw->hw_addr + reg);
140 * i40iw_inetaddr_event - system notifier for netdev events
142 * @event: event for notifier
145 int i40iw_inetaddr_event(struct notifier_block *notifier,
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;
157 hdl = i40iw_find_netdev(event_netdev);
161 iwdev = &hdl->device;
162 if (iwdev->init_state < INET_NOTIFIER)
165 netdev = iwdev->ldev->netdev;
166 upper_dev = netdev_master_upper_dev_get(netdev);
167 if (netdev != event_netdev)
173 local_ipaddr = ntohl(
174 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
176 local_ipaddr = ntohl(ifa->ifa_address);
177 i40iw_manage_arp_cache(iwdev,
185 local_ipaddr = ntohl(
186 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
188 local_ipaddr = ntohl(ifa->ifa_address);
189 i40iw_manage_arp_cache(iwdev,
195 case NETDEV_CHANGEADDR:
196 /* Add the address to the IP table */
198 local_ipaddr = ntohl(
199 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
201 local_ipaddr = ntohl(ifa->ifa_address);
203 i40iw_manage_arp_cache(iwdev,
216 * i40iw_inet6addr_event - system notifier for ipv6 netdev events
218 * @event: event for notifier
221 int i40iw_inet6addr_event(struct notifier_block *notifier,
225 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
226 struct net_device *event_netdev = ifa->idev->dev;
227 struct net_device *netdev;
228 struct i40iw_device *iwdev;
229 struct i40iw_handler *hdl;
230 u32 local_ipaddr6[4];
232 hdl = i40iw_find_netdev(event_netdev);
236 iwdev = &hdl->device;
237 if (iwdev->init_state < INET_NOTIFIER)
240 netdev = iwdev->ldev->netdev;
241 if (netdev != event_netdev)
246 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
247 i40iw_manage_arp_cache(iwdev,
255 case NETDEV_CHANGEADDR:
256 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
257 i40iw_manage_arp_cache(iwdev,
270 * i40iw_net_event - system notifier for net events
272 * @event: event for notifier
275 int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
277 struct neighbour *neigh = ptr;
278 struct i40iw_device *iwdev;
279 struct i40iw_handler *iwhdl;
284 case NETEVENT_NEIGH_UPDATE:
285 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
288 iwdev = &iwhdl->device;
289 if (iwdev->init_state < INET_NOTIFIER)
291 p = (__be32 *)neigh->primary_key;
292 i40iw_copy_ip_ntohl(local_ipaddr, p);
293 if (neigh->nud_state & NUD_VALID) {
294 i40iw_manage_arp_cache(iwdev,
301 i40iw_manage_arp_cache(iwdev,
315 * i40iw_get_cqp_request - get cqp struct
316 * @cqp: device cqp ptr
317 * @wait: cqp to be used in wait mode
319 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
321 struct i40iw_cqp_request *cqp_request = NULL;
324 spin_lock_irqsave(&cqp->req_lock, flags);
325 if (!list_empty(&cqp->cqp_avail_reqs)) {
326 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
327 struct i40iw_cqp_request, list);
328 list_del_init(&cqp_request->list);
330 spin_unlock_irqrestore(&cqp->req_lock, flags);
332 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
334 cqp_request->dynamic = true;
335 INIT_LIST_HEAD(&cqp_request->list);
336 init_waitqueue_head(&cqp_request->waitq);
340 i40iw_pr_err("CQP Request Fail: No Memory");
345 atomic_set(&cqp_request->refcount, 2);
346 cqp_request->waiting = true;
348 atomic_set(&cqp_request->refcount, 1);
354 * i40iw_free_cqp_request - free cqp request
356 * @cqp_request: to be put back in cqp list
358 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
362 if (cqp_request->dynamic) {
365 cqp_request->request_done = false;
366 cqp_request->callback_fcn = NULL;
367 cqp_request->waiting = false;
369 spin_lock_irqsave(&cqp->req_lock, flags);
370 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
371 spin_unlock_irqrestore(&cqp->req_lock, flags);
376 * i40iw_put_cqp_request - dec ref count and free if 0
378 * @cqp_request: to be put back in cqp list
380 void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
381 struct i40iw_cqp_request *cqp_request)
383 if (atomic_dec_and_test(&cqp_request->refcount))
384 i40iw_free_cqp_request(cqp, cqp_request);
388 * i40iw_free_qp - callback after destroy cqp completes
389 * @cqp_request: cqp request for destroy qp
392 static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
394 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
395 struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
396 struct i40iw_device *iwdev;
397 u32 qp_num = iwqp->ibqp.qp_num;
401 i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
402 i40iw_free_qp_resources(iwdev, iwqp, qp_num);
406 * i40iw_wait_event - wait for completion
407 * @iwdev: iwarp device
408 * @cqp_request: cqp request to wait
410 static int i40iw_wait_event(struct i40iw_device *iwdev,
411 struct i40iw_cqp_request *cqp_request)
413 struct cqp_commands_info *info = &cqp_request->info;
414 struct i40iw_cqp *iwcqp = &iwdev->cqp;
415 bool cqp_error = false;
419 timeout_ret = wait_event_timeout(cqp_request->waitq,
420 cqp_request->request_done,
421 I40IW_EVENT_TIMEOUT);
423 i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n",
424 info->cqp_cmd, timeout_ret);
426 i40iw_request_reset(iwdev);
429 cqp_error = cqp_request->compl_info.error;
431 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
432 info->cqp_cmd, cqp_request->compl_info.maj_err_code,
433 cqp_request->compl_info.min_err_code);
438 i40iw_put_cqp_request(iwcqp, cqp_request);
443 * i40iw_handle_cqp_op - process cqp command
444 * @iwdev: iwarp device
445 * @cqp_request: cqp request to process
447 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
448 struct i40iw_cqp_request
451 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
452 enum i40iw_status_code status;
453 struct cqp_commands_info *info = &cqp_request->info;
456 status = i40iw_process_cqp_cmd(dev, info);
458 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
459 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
462 if (cqp_request->waiting)
463 err_code = i40iw_wait_event(iwdev, cqp_request);
465 status = I40IW_ERR_CQP_COMPL_ERROR;
470 * i40iw_add_pdusecount - add pd refcount
471 * @iwpd: pd for refcount
473 void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
475 atomic_inc(&iwpd->usecount);
479 * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
480 * @iwpd: pd for refcount
481 * @iwdev: iwarp device
483 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
485 if (!atomic_dec_and_test(&iwpd->usecount))
487 i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
492 * i40iw_add_ref - add refcount for qp
495 void i40iw_add_ref(struct ib_qp *ibqp)
497 struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
499 atomic_inc(&iwqp->refcount);
503 * i40iw_rem_ref - rem refcount for qp and free if 0
506 void i40iw_rem_ref(struct ib_qp *ibqp)
508 struct i40iw_qp *iwqp;
509 enum i40iw_status_code status;
510 struct i40iw_cqp_request *cqp_request;
511 struct cqp_commands_info *cqp_info;
512 struct i40iw_device *iwdev;
516 iwqp = to_iwqp(ibqp);
518 spin_lock_irqsave(&iwdev->qptable_lock, flags);
519 if (!atomic_dec_and_test(&iwqp->refcount)) {
520 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
524 qp_num = iwqp->ibqp.qp_num;
525 iwdev->qp_table[qp_num] = NULL;
526 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
527 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
531 cqp_request->callback_fcn = i40iw_free_qp;
532 cqp_request->param = (void *)&iwqp->sc_qp;
533 cqp_info = &cqp_request->info;
534 cqp_info->cqp_cmd = OP_QP_DESTROY;
535 cqp_info->post_sq = 1;
536 cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
537 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
538 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
539 status = i40iw_handle_cqp_op(iwdev, cqp_request);
541 i40iw_pr_err("CQP-OP Destroy QP fail");
545 * i40iw_get_qp - get qp address
546 * @device: iwarp device
549 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
551 struct i40iw_device *iwdev = to_iwdev(device);
553 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
556 return &iwdev->qp_table[qpn]->ibqp;
560 * i40iw_debug_buf - print debug msg and buffer is mask set
561 * @dev: hardware control device structure
562 * @mask: mask to compare if to print debug buffer
563 * @buf: points buffer addr
564 * @size: saize of buffer to print
566 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
567 enum i40iw_debug_flag mask,
574 if (!(dev->debug_mask & mask))
576 i40iw_debug(dev, mask, "%s\n", desc);
577 i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
578 (unsigned long long)virt_to_phys(buf));
580 for (i = 0; i < size; i += 8)
581 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
585 * i40iw_get_hw_addr - return hw addr
586 * @par: points to shared dev
588 u8 __iomem *i40iw_get_hw_addr(void *par)
590 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
592 return dev->hw->hw_addr;
596 * i40iw_remove_head - return head entry and remove from list
597 * @list: list for entry
599 void *i40iw_remove_head(struct list_head *list)
601 struct list_head *entry;
603 if (list_empty(list))
606 entry = (void *)list->next;
608 return (void *)entry;
612 * i40iw_allocate_dma_mem - Memory alloc helper fn
613 * @hw: pointer to the HW structure
614 * @mem: ptr to mem struct to fill out
615 * @size: size of memory requested
616 * @alignment: what to align the allocation to
618 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
619 struct i40iw_dma_mem *mem,
623 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
626 return I40IW_ERR_PARAM;
627 mem->size = ALIGN(size, alignment);
628 mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
629 (dma_addr_t *)&mem->pa, GFP_KERNEL);
631 return I40IW_ERR_NO_MEMORY;
636 * i40iw_free_dma_mem - Memory free helper fn
637 * @hw: pointer to the HW structure
638 * @mem: ptr to mem struct to free
640 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
642 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
644 if (!mem || !mem->va)
647 dma_free_coherent(&pcidev->dev, mem->size,
648 mem->va, (dma_addr_t)mem->pa);
653 * i40iw_allocate_virt_mem - virtual memory alloc helper fn
654 * @hw: pointer to the HW structure
655 * @mem: ptr to mem struct to fill out
656 * @size: size of memory requested
658 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
659 struct i40iw_virt_mem *mem,
663 return I40IW_ERR_PARAM;
666 mem->va = kzalloc(size, GFP_KERNEL);
671 return I40IW_ERR_NO_MEMORY;
675 * i40iw_free_virt_mem - virtual memory free helper fn
676 * @hw: pointer to the HW structure
677 * @mem: ptr to mem struct to free
679 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
680 struct i40iw_virt_mem *mem)
683 return I40IW_ERR_PARAM;
685 * mem->va points to the parent of mem, so both mem and mem->va
686 * can not be touched once mem->va is freed
693 * i40iw_cqp_sds_cmd - create cqp command for sd
694 * @dev: hardware control device structure
695 * @sd_info: information for sd cqp
698 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
699 struct i40iw_update_sds_info *sdinfo)
701 enum i40iw_status_code status;
702 struct i40iw_cqp_request *cqp_request;
703 struct cqp_commands_info *cqp_info;
704 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
706 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
708 return I40IW_ERR_NO_MEMORY;
709 cqp_info = &cqp_request->info;
710 memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
711 sizeof(cqp_info->in.u.update_pe_sds.info));
712 cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
713 cqp_info->post_sq = 1;
714 cqp_info->in.u.update_pe_sds.dev = dev;
715 cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
716 status = i40iw_handle_cqp_op(iwdev, cqp_request);
718 i40iw_pr_err("CQP-OP Update SD's fail");
723 * i40iw_term_modify_qp - modify qp for term message
724 * @qp: hardware control qp
725 * @next_state: qp's next state
726 * @term: terminate code
729 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
731 struct i40iw_qp *iwqp;
733 iwqp = (struct i40iw_qp *)qp->back_qp;
734 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
738 * i40iw_terminate_done - after terminate is completed
739 * @qp: hardware control qp
740 * @timeout_occurred: indicates if terminate timer expired
742 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
744 struct i40iw_qp *iwqp;
745 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
750 iwqp = (struct i40iw_qp *)qp->back_qp;
751 spin_lock_irqsave(&iwqp->lock, flags);
752 if (iwqp->hte_added) {
756 first_time = !(qp->term_flags & I40IW_TERM_DONE);
757 qp->term_flags |= I40IW_TERM_DONE;
758 spin_unlock_irqrestore(&iwqp->lock, flags);
760 if (!timeout_occurred)
761 i40iw_terminate_del_timer(qp);
763 next_iwarp_state = I40IW_QP_STATE_CLOSING;
765 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
766 i40iw_cm_disconn(iwqp);
771 * i40iw_terminate_imeout - timeout happened
772 * @context: points to iwarp qp
774 static void i40iw_terminate_timeout(unsigned long context)
776 struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
777 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
779 i40iw_terminate_done(qp, 1);
783 * i40iw_terminate_start_timer - start terminate timeout
784 * @qp: hardware control qp
786 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
788 struct i40iw_qp *iwqp;
790 iwqp = (struct i40iw_qp *)qp->back_qp;
791 init_timer(&iwqp->terminate_timer);
792 iwqp->terminate_timer.function = i40iw_terminate_timeout;
793 iwqp->terminate_timer.expires = jiffies + HZ;
794 iwqp->terminate_timer.data = (unsigned long)iwqp;
795 add_timer(&iwqp->terminate_timer);
799 * i40iw_terminate_del_timer - delete terminate timeout
800 * @qp: hardware control qp
802 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
804 struct i40iw_qp *iwqp;
806 iwqp = (struct i40iw_qp *)qp->back_qp;
807 del_timer(&iwqp->terminate_timer);
811 * i40iw_cqp_generic_worker - generic worker for cqp
812 * @work: work pointer
814 static void i40iw_cqp_generic_worker(struct work_struct *work)
816 struct i40iw_virtchnl_work_info *work_info =
817 &((struct virtchnl_work *)work)->work_info;
819 if (work_info->worker_vf_dev)
820 work_info->callback_fcn(work_info->worker_vf_dev);
824 * i40iw_cqp_spawn_worker - spawn worket thread
825 * @iwdev: device struct pointer
826 * @work_info: work request info
827 * @iw_vf_idx: virtual function index
829 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
830 struct i40iw_virtchnl_work_info *work_info,
833 struct virtchnl_work *work;
834 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
836 work = &iwdev->virtchnl_w[iw_vf_idx];
837 memcpy(&work->work_info, work_info, sizeof(*work_info));
838 INIT_WORK(&work->work, i40iw_cqp_generic_worker);
839 queue_work(iwdev->virtchnl_wq, &work->work);
843 * i40iw_cqp_manage_hmc_fcn_worker -
844 * @work: work pointer for hmc info
846 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
848 struct i40iw_cqp_request *cqp_request =
849 ((struct virtchnl_work *)work)->cqp_request;
850 struct i40iw_ccq_cqe_info ccq_cqe_info;
851 struct i40iw_hmc_fcn_info *hmcfcninfo =
852 &cqp_request->info.in.u.manage_hmc_pm.info;
853 struct i40iw_device *iwdev =
854 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
856 ccq_cqe_info.cqp = NULL;
857 ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
858 ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
859 ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
860 ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
861 ccq_cqe_info.scratch = 0;
862 ccq_cqe_info.error = cqp_request->compl_info.error;
863 hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
864 hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
865 i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
869 * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
870 * @cqp_request: cqp request info struct for hmc fun
871 * @unused: unused param of callback
873 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
876 struct virtchnl_work *work;
877 struct i40iw_hmc_fcn_info *hmcfcninfo =
878 &cqp_request->info.in.u.manage_hmc_pm.info;
879 struct i40iw_device *iwdev =
880 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
883 if (hmcfcninfo && hmcfcninfo->callback_fcn) {
884 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
885 atomic_inc(&cqp_request->refcount);
886 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
887 work->cqp_request = cqp_request;
888 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
889 queue_work(iwdev->virtchnl_wq, &work->work);
890 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
892 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
897 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
898 * @dev: hardware control device structure
899 * @hmcfcninfo: info for hmc
901 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
902 struct i40iw_hmc_fcn_info *hmcfcninfo)
904 enum i40iw_status_code status;
905 struct i40iw_cqp_request *cqp_request;
906 struct cqp_commands_info *cqp_info;
907 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
909 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
910 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
912 return I40IW_ERR_NO_MEMORY;
913 cqp_info = &cqp_request->info;
914 cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
915 cqp_request->param = hmcfcninfo;
916 memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
917 sizeof(*hmcfcninfo));
918 cqp_info->in.u.manage_hmc_pm.dev = dev;
919 cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
920 cqp_info->post_sq = 1;
921 cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
922 status = i40iw_handle_cqp_op(iwdev, cqp_request);
924 i40iw_pr_err("CQP-OP Manage HMC fail");
929 * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
930 * @iwdev: function device struct
931 * @values_mem: buffer for fpm
932 * @hmc_fn_id: function id for fpm
934 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
935 struct i40iw_dma_mem *values_mem,
938 enum i40iw_status_code status;
939 struct i40iw_cqp_request *cqp_request;
940 struct cqp_commands_info *cqp_info;
941 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
943 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
945 return I40IW_ERR_NO_MEMORY;
946 cqp_info = &cqp_request->info;
947 cqp_request->param = NULL;
948 cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
949 cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
950 cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
951 cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
952 cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
953 cqp_info->post_sq = 1;
954 cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
955 status = i40iw_handle_cqp_op(iwdev, cqp_request);
957 i40iw_pr_err("CQP-OP Query FPM fail");
962 * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
963 * @dev: hardware control device structure
964 * @values_mem: buffer with fpm values
965 * @hmc_fn_id: function id for fpm
967 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
968 struct i40iw_dma_mem *values_mem,
971 enum i40iw_status_code status;
972 struct i40iw_cqp_request *cqp_request;
973 struct cqp_commands_info *cqp_info;
974 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
976 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
978 return I40IW_ERR_NO_MEMORY;
979 cqp_info = &cqp_request->info;
980 cqp_request->param = NULL;
981 cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
982 cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
983 cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
984 cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
985 cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
986 cqp_info->post_sq = 1;
987 cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
988 status = i40iw_handle_cqp_op(iwdev, cqp_request);
990 i40iw_pr_err("CQP-OP Commit FPM fail");
995 * i40iw_vf_wait_vchnl_resp - wait for channel msg
996 * @iwdev: function's device struct
998 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1000 struct i40iw_device *iwdev = dev->back_dev;
1003 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1004 __func__, __LINE__, dev, iwdev);
1006 atomic_set(&iwdev->vchnl_msgs, 2);
1007 timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1008 (atomic_read(&iwdev->vchnl_msgs) == 1),
1009 I40IW_VCHNL_EVENT_TIMEOUT);
1010 atomic_dec(&iwdev->vchnl_msgs);
1012 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1013 atomic_set(&iwdev->vchnl_msgs, 0);
1014 dev->vchnl_up = false;
1015 return I40IW_ERR_TIMEOUT;
1017 wake_up(&dev->vf_reqs);
1022 * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1023 * @dev: hardware control device structure
1024 * @qp: hardware control qp
1026 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1028 struct i40iw_qp_flush_info info;
1029 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1031 i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1032 memset(&info, 0, sizeof(info));
1033 info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1034 info.generate_ae = true;
1035 info.ae_source = 0x3;
1036 (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1040 * i40iw_init_hash_desc - initialize hash for crc calculation
1041 * @desc: cryption type
1043 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1045 struct crypto_shash *tfm;
1046 struct shash_desc *tdesc;
1048 tfm = crypto_alloc_shash("crc32c", 0, 0);
1050 return I40IW_ERR_MPA_CRC;
1052 tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1055 crypto_free_shash(tfm);
1056 return I40IW_ERR_MPA_CRC;
1065 * i40iw_free_hash_desc - free hash desc
1066 * @desc: to be freed
1068 void i40iw_free_hash_desc(struct shash_desc *desc)
1071 crypto_free_shash(desc->tfm);
1077 * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1078 * @dev: hardware control device structure
1079 * @mem: buffer ptr for fpm to be allocated
1080 * @return: memory allocation status
1082 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1083 struct i40iw_dma_mem *mem)
1085 enum i40iw_status_code status;
1086 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1088 status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1089 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1094 * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1095 * @desc: desc for hash
1096 * @addr: address of buffer for crc
1097 * @length: length of buffer
1098 * @value: value to be compared
1100 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1107 enum i40iw_status_code ret_code = 0;
1109 crypto_shash_init(desc);
1110 ret = crypto_shash_update(desc, addr, length);
1112 crypto_shash_final(desc, (u8 *)&crc);
1114 i40iw_pr_err("mpa crc check fail\n");
1115 ret_code = I40IW_ERR_MPA_CRC;
1121 * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1122 * @dev: hardware control device structure
1123 * @buf: receive puda buffer on exception q
1125 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1126 struct i40iw_puda_buf *buf)
1128 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1129 struct i40iw_qp *iwqp;
1130 struct i40iw_cm_node *cm_node;
1131 u32 loc_addr[4], rem_addr[4];
1132 u16 loc_port, rem_port;
1133 struct ipv6hdr *ip6h;
1134 struct iphdr *iph = (struct iphdr *)buf->iph;
1135 struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1137 if (iph->version == 4) {
1138 memset(loc_addr, 0, sizeof(loc_addr));
1139 loc_addr[0] = ntohl(iph->daddr);
1140 memset(rem_addr, 0, sizeof(rem_addr));
1141 rem_addr[0] = ntohl(iph->saddr);
1143 ip6h = (struct ipv6hdr *)buf->iph;
1144 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1145 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1147 loc_port = ntohs(tcph->dest);
1148 rem_port = ntohs(tcph->source);
1150 cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1154 iwqp = cm_node->iwqp;
1155 return &iwqp->sc_qp;
1159 * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1160 * @buf: puda to update
1161 * @length: length of buffer
1162 * @seqnum: seq number for tcp
1164 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1166 struct tcphdr *tcph;
1170 u8 *addr = (u8 *)buf->mem.va;
1172 iphlen = (buf->ipv4) ? 20 : 40;
1173 iph = (struct iphdr *)(addr + buf->maclen);
1174 tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1175 packetsize = length + buf->tcphlen + iphlen;
1177 iph->tot_len = htons(packetsize);
1178 tcph->seq = htonl(seqnum);
1182 * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1183 * @info: to get information
1186 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1187 struct i40iw_puda_buf *buf)
1190 struct ipv6hdr *ip6h;
1191 struct tcphdr *tcph;
1194 u8 *mem = (u8 *)buf->mem.va;
1195 struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1197 if (ethh->h_proto == htons(0x8100)) {
1198 info->vlan_valid = true;
1199 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1201 buf->maclen = (info->vlan_valid) ? 18 : 14;
1202 iphlen = (info->l3proto) ? 40 : 20;
1203 buf->ipv4 = (info->l3proto) ? false : true;
1204 buf->iph = mem + buf->maclen;
1205 iph = (struct iphdr *)buf->iph;
1207 buf->tcph = buf->iph + iphlen;
1208 tcph = (struct tcphdr *)buf->tcph;
1211 pkt_len = ntohs(iph->tot_len);
1213 ip6h = (struct ipv6hdr *)buf->iph;
1214 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1217 buf->totallen = pkt_len + buf->maclen;
1219 if (info->payload_len < buf->totallen - 4) {
1220 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1221 info->payload_len, buf->totallen);
1222 return I40IW_ERR_INVALID_SIZE;
1225 buf->tcphlen = (tcph->doff) << 2;
1226 buf->datalen = pkt_len - iphlen - buf->tcphlen;
1227 buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1228 buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1229 buf->seqnum = ntohl(tcph->seq);
1234 * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1235 * @dev: hardware control device structure
1237 static void i40iw_hw_stats_timeout(unsigned long dev)
1239 struct i40iw_sc_dev *pf_dev = (struct i40iw_sc_dev *)dev;
1240 struct i40iw_dev_pestat *pf_devstat = &pf_dev->dev_pestat;
1241 struct i40iw_dev_pestat *vf_devstat = NULL;
1243 unsigned long flags;
1246 pf_devstat->ops.iw_hw_stat_read_all(pf_devstat, &pf_devstat->hw_stats);
1247 for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1248 spin_lock_irqsave(&pf_devstat->stats_lock, flags);
1249 if (pf_dev->vf_dev[iw_vf_idx]) {
1250 if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1251 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->dev_pestat;
1252 vf_devstat->ops.iw_hw_stat_read_all(vf_devstat, &vf_devstat->hw_stats);
1255 spin_unlock_irqrestore(&pf_devstat->stats_lock, flags);
1258 mod_timer(&pf_devstat->stats_timer,
1259 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1263 * i40iw_hw_stats_start_timer - Start periodic stats timer
1264 * @dev: hardware control device structure
1266 void i40iw_hw_stats_start_timer(struct i40iw_sc_dev *dev)
1268 struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
1270 init_timer(&devstat->stats_timer);
1271 devstat->stats_timer.function = i40iw_hw_stats_timeout;
1272 devstat->stats_timer.data = (unsigned long)dev;
1273 mod_timer(&devstat->stats_timer,
1274 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1278 * i40iw_hw_stats_del_timer - Delete periodic stats timer
1279 * @dev: hardware control device structure
1281 void i40iw_hw_stats_del_timer(struct i40iw_sc_dev *dev)
1283 struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
1285 del_timer_sync(&devstat->stats_timer);