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;
156 u32 action = I40IW_ARP_ADD;
158 hdl = i40iw_find_netdev(event_netdev);
162 iwdev = &hdl->device;
163 netdev = iwdev->ldev->netdev;
164 upper_dev = netdev_master_upper_dev_get(netdev);
165 if (netdev != event_netdev)
169 local_ipaddr = ntohl(
170 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
172 local_ipaddr = ntohl(ifa->ifa_address);
175 action = I40IW_ARP_DELETE;
179 case NETDEV_CHANGEADDR:
180 i40iw_manage_arp_cache(iwdev,
185 i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
186 (action == I40IW_ARP_ADD) ? true : false);
195 * i40iw_inet6addr_event - system notifier for ipv6 netdev events
197 * @event: event for notifier
200 int i40iw_inet6addr_event(struct notifier_block *notifier,
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;
212 hdl = i40iw_find_netdev(event_netdev);
216 iwdev = &hdl->device;
217 netdev = iwdev->ldev->netdev;
218 if (netdev != event_netdev)
221 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
224 action = I40IW_ARP_DELETE;
228 case NETDEV_CHANGEADDR:
229 i40iw_manage_arp_cache(iwdev,
234 i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
235 (action == I40IW_ARP_ADD) ? true : false);
244 * i40iw_net_event - system notifier for net events
246 * @event: event for notifier
249 int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
251 struct neighbour *neigh = ptr;
252 struct i40iw_device *iwdev;
253 struct i40iw_handler *iwhdl;
258 case NETEVENT_NEIGH_UPDATE:
259 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
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,
273 i40iw_manage_arp_cache(iwdev,
287 * i40iw_get_cqp_request - get cqp struct
288 * @cqp: device cqp ptr
289 * @wait: cqp to be used in wait mode
291 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
293 struct i40iw_cqp_request *cqp_request = NULL;
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);
302 spin_unlock_irqrestore(&cqp->req_lock, flags);
304 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
306 cqp_request->dynamic = true;
307 INIT_LIST_HEAD(&cqp_request->list);
308 init_waitqueue_head(&cqp_request->waitq);
312 i40iw_pr_err("CQP Request Fail: No Memory");
317 atomic_set(&cqp_request->refcount, 2);
318 cqp_request->waiting = true;
320 atomic_set(&cqp_request->refcount, 1);
326 * i40iw_free_cqp_request - free cqp request
328 * @cqp_request: to be put back in cqp list
330 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
334 if (cqp_request->dynamic) {
337 cqp_request->request_done = false;
338 cqp_request->callback_fcn = NULL;
339 cqp_request->waiting = false;
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);
348 * i40iw_put_cqp_request - dec ref count and free if 0
350 * @cqp_request: to be put back in cqp list
352 void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
353 struct i40iw_cqp_request *cqp_request)
355 if (atomic_dec_and_test(&cqp_request->refcount))
356 i40iw_free_cqp_request(cqp, cqp_request);
360 * i40iw_free_qp - callback after destroy cqp completes
361 * @cqp_request: cqp request for destroy qp
364 static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
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;
373 i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
374 i40iw_free_qp_resources(iwdev, iwqp, qp_num);
375 i40iw_rem_devusecount(iwdev);
379 * i40iw_wait_event - wait for completion
380 * @iwdev: iwarp device
381 * @cqp_request: cqp request to wait
383 static int i40iw_wait_event(struct i40iw_device *iwdev,
384 struct i40iw_cqp_request *cqp_request)
386 struct cqp_commands_info *info = &cqp_request->info;
387 struct i40iw_cqp *iwcqp = &iwdev->cqp;
388 bool cqp_error = false;
392 timeout_ret = wait_event_timeout(cqp_request->waitq,
393 cqp_request->request_done,
394 I40IW_EVENT_TIMEOUT);
396 i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n",
397 info->cqp_cmd, timeout_ret);
401 i40iw_request_reset(iwdev);
405 cqp_error = cqp_request->compl_info.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);
414 i40iw_put_cqp_request(iwcqp, cqp_request);
419 * i40iw_handle_cqp_op - process cqp command
420 * @iwdev: iwarp device
421 * @cqp_request: cqp request to process
423 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
424 struct i40iw_cqp_request
427 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
428 enum i40iw_status_code status;
429 struct cqp_commands_info *info = &cqp_request->info;
433 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
434 return I40IW_ERR_CQP_COMPL_ERROR;
437 status = i40iw_process_cqp_cmd(dev, info);
439 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
440 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
443 if (cqp_request->waiting)
444 err_code = i40iw_wait_event(iwdev, cqp_request);
446 status = I40IW_ERR_CQP_COMPL_ERROR;
451 * i40iw_add_devusecount - add dev refcount
452 * @iwdev: dev for refcount
454 void i40iw_add_devusecount(struct i40iw_device *iwdev)
456 atomic64_inc(&iwdev->use_count);
460 * i40iw_rem_devusecount - decrement refcount for dev
463 void i40iw_rem_devusecount(struct i40iw_device *iwdev)
465 if (!atomic64_dec_and_test(&iwdev->use_count))
467 wake_up(&iwdev->close_wq);
471 * i40iw_add_pdusecount - add pd refcount
472 * @iwpd: pd for refcount
474 void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
476 atomic_inc(&iwpd->usecount);
480 * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
481 * @iwpd: pd for refcount
482 * @iwdev: iwarp device
484 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
486 if (!atomic_dec_and_test(&iwpd->usecount))
488 i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
493 * i40iw_add_ref - add refcount for qp
496 void i40iw_add_ref(struct ib_qp *ibqp)
498 struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
500 atomic_inc(&iwqp->refcount);
504 * i40iw_rem_ref - rem refcount for qp and free if 0
507 void i40iw_rem_ref(struct ib_qp *ibqp)
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;
517 iwqp = to_iwqp(ibqp);
519 spin_lock_irqsave(&iwdev->qptable_lock, flags);
520 if (!atomic_dec_and_test(&iwqp->refcount)) {
521 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
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);
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);
542 i40iw_pr_err("CQP-OP Destroy QP fail");
546 * i40iw_get_qp - get qp address
547 * @device: iwarp device
550 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
552 struct i40iw_device *iwdev = to_iwdev(device);
554 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
557 return &iwdev->qp_table[qpn]->ibqp;
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
567 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
568 enum i40iw_debug_flag mask,
575 if (!(dev->debug_mask & mask))
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));
581 for (i = 0; i < size; i += 8)
582 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
586 * i40iw_get_hw_addr - return hw addr
587 * @par: points to shared dev
589 u8 __iomem *i40iw_get_hw_addr(void *par)
591 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
593 return dev->hw->hw_addr;
597 * i40iw_remove_head - return head entry and remove from list
598 * @list: list for entry
600 void *i40iw_remove_head(struct list_head *list)
602 struct list_head *entry;
604 if (list_empty(list))
607 entry = (void *)list->next;
609 return (void *)entry;
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
619 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
620 struct i40iw_dma_mem *mem,
624 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
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);
632 return I40IW_ERR_NO_MEMORY;
637 * i40iw_free_dma_mem - Memory free helper fn
638 * @hw: pointer to the HW structure
639 * @mem: ptr to mem struct to free
641 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
643 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
645 if (!mem || !mem->va)
648 dma_free_coherent(&pcidev->dev, mem->size,
649 mem->va, (dma_addr_t)mem->pa);
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
659 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
660 struct i40iw_virt_mem *mem,
664 return I40IW_ERR_PARAM;
667 mem->va = kzalloc(size, GFP_KERNEL);
672 return I40IW_ERR_NO_MEMORY;
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
680 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
681 struct i40iw_virt_mem *mem)
684 return I40IW_ERR_PARAM;
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
694 * i40iw_cqp_sds_cmd - create cqp command for sd
695 * @dev: hardware control device structure
696 * @sd_info: information for sd cqp
699 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
700 struct i40iw_update_sds_info *sdinfo)
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;
707 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
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);
719 i40iw_pr_err("CQP-OP Update SD's fail");
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
729 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
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;
737 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
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);
748 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
752 * i40iw_qp_mss_modify - modify mss for qp
753 * @dev: hardware control device structure
754 * @qp: hardware control qp
756 void i40iw_qp_mss_modify(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
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;
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);
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
775 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
777 struct i40iw_qp *iwqp;
779 iwqp = (struct i40iw_qp *)qp->back_qp;
780 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
784 * i40iw_terminate_done - after terminate is completed
785 * @qp: hardware control qp
786 * @timeout_occurred: indicates if terminate timer expired
788 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
790 struct i40iw_qp *iwqp;
791 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
796 iwqp = (struct i40iw_qp *)qp->back_qp;
797 spin_lock_irqsave(&iwqp->lock, flags);
798 if (iwqp->hte_added) {
802 first_time = !(qp->term_flags & I40IW_TERM_DONE);
803 qp->term_flags |= I40IW_TERM_DONE;
804 spin_unlock_irqrestore(&iwqp->lock, flags);
806 if (!timeout_occurred)
807 i40iw_terminate_del_timer(qp);
809 next_iwarp_state = I40IW_QP_STATE_CLOSING;
811 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
812 i40iw_cm_disconn(iwqp);
817 * i40iw_terminate_imeout - timeout happened
818 * @context: points to iwarp qp
820 static void i40iw_terminate_timeout(unsigned long context)
822 struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
823 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
825 i40iw_terminate_done(qp, 1);
826 i40iw_rem_ref(&iwqp->ibqp);
830 * i40iw_terminate_start_timer - start terminate timeout
831 * @qp: hardware control qp
833 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
835 struct i40iw_qp *iwqp;
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);
847 * i40iw_terminate_del_timer - delete terminate timeout
848 * @qp: hardware control qp
850 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
852 struct i40iw_qp *iwqp;
854 iwqp = (struct i40iw_qp *)qp->back_qp;
855 if (del_timer(&iwqp->terminate_timer))
856 i40iw_rem_ref(&iwqp->ibqp);
860 * i40iw_cqp_generic_worker - generic worker for cqp
861 * @work: work pointer
863 static void i40iw_cqp_generic_worker(struct work_struct *work)
865 struct i40iw_virtchnl_work_info *work_info =
866 &((struct virtchnl_work *)work)->work_info;
868 if (work_info->worker_vf_dev)
869 work_info->callback_fcn(work_info->worker_vf_dev);
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
878 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
879 struct i40iw_virtchnl_work_info *work_info,
882 struct virtchnl_work *work;
883 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
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);
892 * i40iw_cqp_manage_hmc_fcn_worker -
893 * @work: work pointer for hmc info
895 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
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;
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);
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
922 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
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->
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__);
941 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
946 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
947 * @dev: hardware control device structure
948 * @hmcfcninfo: info for hmc
950 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
951 struct i40iw_hmc_fcn_info *hmcfcninfo)
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;
958 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
959 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
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);
973 i40iw_pr_err("CQP-OP Manage HMC fail");
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
983 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
984 struct i40iw_dma_mem *values_mem,
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;
992 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
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);
1006 i40iw_pr_err("CQP-OP Query FPM fail");
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
1016 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1017 struct i40iw_dma_mem *values_mem,
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;
1025 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
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);
1039 i40iw_pr_err("CQP-OP Commit FPM fail");
1044 * i40iw_vf_wait_vchnl_resp - wait for channel msg
1045 * @iwdev: function's device struct
1047 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1049 struct i40iw_device *iwdev = dev->back_dev;
1052 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1053 __func__, __LINE__, dev, iwdev);
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);
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;
1066 wake_up(&dev->vf_reqs);
1071 * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1072 * @dev: device pointer
1073 * @cq: pointer to created cq
1075 enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1076 struct i40iw_sc_cq *cq)
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;
1084 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1086 return I40IW_ERR_NO_MEMORY;
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);
1095 i40iw_pr_err("CQP-OP Create QP fail");
1101 * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1102 * @dev: device pointer
1103 * @qp: pointer to created qp
1105 enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1106 struct i40iw_sc_qp *qp)
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;
1115 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1117 return I40IW_ERR_NO_MEMORY;
1119 cqp_info = &cqp_request->info;
1120 qp_info = &cqp_request->info.in.u.qp_create.info;
1122 memset(qp_info, 0, sizeof(*qp_info));
1124 qp_info->cq_num_valid = true;
1125 qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
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);
1133 i40iw_pr_err("CQP-OP QP create fail");
1138 * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1139 * @dev: device pointer
1140 * @cq: pointer to cq
1142 void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1144 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1146 i40iw_cq_wq_destroy(iwdev, cq);
1150 * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1151 * @dev: device pointer
1152 * @qp: pointer to qp
1154 void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
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;
1162 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1166 cqp_info = &cqp_request->info;
1167 memset(cqp_info, 0, sizeof(*cqp_info));
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);
1176 i40iw_pr_err("CQP QP_DESTROY fail");
1181 * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1182 * @dev: hardware control device structure
1183 * @qp: hardware control qp
1185 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1187 struct i40iw_qp_flush_info info;
1188 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
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);
1199 * i40iw_init_hash_desc - initialize hash for crc calculation
1200 * @desc: cryption type
1202 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1204 struct crypto_shash *tfm;
1205 struct shash_desc *tdesc;
1207 tfm = crypto_alloc_shash("crc32c", 0, 0);
1209 return I40IW_ERR_MPA_CRC;
1211 tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1214 crypto_free_shash(tfm);
1215 return I40IW_ERR_MPA_CRC;
1224 * i40iw_free_hash_desc - free hash desc
1225 * @desc: to be freed
1227 void i40iw_free_hash_desc(struct shash_desc *desc)
1230 crypto_free_shash(desc->tfm);
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
1241 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1242 struct i40iw_dma_mem *mem)
1244 enum i40iw_status_code status;
1245 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1247 status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1248 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
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
1259 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1266 enum i40iw_status_code ret_code = 0;
1268 crypto_shash_init(desc);
1269 ret = crypto_shash_update(desc, addr, length);
1271 crypto_shash_final(desc, (u8 *)&crc);
1273 i40iw_pr_err("mpa crc check fail\n");
1274 ret_code = I40IW_ERR_MPA_CRC;
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
1284 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1285 struct i40iw_puda_buf *buf)
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;
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);
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);
1306 loc_port = ntohs(tcph->dest);
1307 rem_port = ntohs(tcph->source);
1309 cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1313 iwqp = cm_node->iwqp;
1314 return &iwqp->sc_qp;
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
1323 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1325 struct tcphdr *tcph;
1329 u8 *addr = (u8 *)buf->mem.va;
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;
1336 iph->tot_len = htons(packetsize);
1337 tcph->seq = htonl(seqnum);
1341 * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1342 * @info: to get information
1345 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1346 struct i40iw_puda_buf *buf)
1349 struct ipv6hdr *ip6h;
1350 struct tcphdr *tcph;
1353 u8 *mem = (u8 *)buf->mem.va;
1354 struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
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;
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;
1366 buf->tcph = buf->iph + iphlen;
1367 tcph = (struct tcphdr *)buf->tcph;
1370 pkt_len = ntohs(iph->tot_len);
1372 ip6h = (struct ipv6hdr *)buf->iph;
1373 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1376 buf->totallen = pkt_len + buf->maclen;
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;
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);
1393 * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1394 * @vsi: pointer to the vsi structure
1396 static void i40iw_hw_stats_timeout(unsigned long vsi)
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;
1403 unsigned long flags;
1406 i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
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);
1416 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1419 mod_timer(&pf_devstat->stats_timer,
1420 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1424 * i40iw_hw_stats_start_timer - Start periodic stats timer
1425 * @vsi: pointer to the vsi structure
1427 void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1429 struct i40iw_vsi_pestat *devstat = vsi->pestat;
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));
1439 * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1440 * @vsi: pointer to the vsi structure
1442 void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1444 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1446 del_timer_sync(&devstat->stats_timer);