/******************************************************************************* * * Copyright (c) 2015-2016 Intel Corporation. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenFabrics.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * *******************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "i40iw.h" /** * i40iw_arp_table - manage arp table * @iwdev: iwarp device * @ip_addr: ip address for device * @mac_addr: mac address ptr * @action: modify, delete or add */ int i40iw_arp_table(struct i40iw_device *iwdev, u32 *ip_addr, bool ipv4, u8 *mac_addr, u32 action) { int arp_index; int err; u32 ip[4]; if (ipv4) { memset(ip, 0, sizeof(ip)); ip[0] = *ip_addr; } else { memcpy(ip, ip_addr, sizeof(ip)); } for (arp_index = 0; (u32)arp_index < iwdev->arp_table_size; arp_index++) if (memcmp(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)) == 0) break; switch (action) { case I40IW_ARP_ADD: if (arp_index != iwdev->arp_table_size) return -1; arp_index = 0; err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps, iwdev->arp_table_size, (u32 *)&arp_index, &iwdev->next_arp_index); if (err) return err; memcpy(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)); ether_addr_copy(iwdev->arp_table[arp_index].mac_addr, mac_addr); break; case I40IW_ARP_RESOLVE: if (arp_index == iwdev->arp_table_size) return -1; break; case I40IW_ARP_DELETE: if (arp_index == iwdev->arp_table_size) return -1; memset(iwdev->arp_table[arp_index].ip_addr, 0, sizeof(iwdev->arp_table[arp_index].ip_addr)); eth_zero_addr(iwdev->arp_table[arp_index].mac_addr); i40iw_free_resource(iwdev, iwdev->allocated_arps, arp_index); break; default: return -1; } return arp_index; } /** * i40iw_wr32 - write 32 bits to hw register * @hw: hardware information including registers * @reg: register offset * @value: vvalue to write to register */ inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value) { writel(value, hw->hw_addr + reg); } /** * i40iw_rd32 - read a 32 bit hw register * @hw: hardware information including registers * @reg: register offset * * Return value of register content */ inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg) { return readl(hw->hw_addr + reg); } /** * i40iw_inetaddr_event - system notifier for netdev events * @notfier: not used * @event: event for notifier * @ptr: if address */ int i40iw_inetaddr_event(struct notifier_block *notifier, unsigned long event, void *ptr) { struct in_ifaddr *ifa = ptr; struct net_device *event_netdev = ifa->ifa_dev->dev; struct net_device *netdev; struct net_device *upper_dev; struct i40iw_device *iwdev; struct i40iw_handler *hdl; u32 local_ipaddr; hdl = i40iw_find_netdev(event_netdev); if (!hdl) return NOTIFY_DONE; iwdev = &hdl->device; netdev = iwdev->ldev->netdev; upper_dev = netdev_master_upper_dev_get(netdev); if (netdev != event_netdev) return NOTIFY_DONE; switch (event) { case NETDEV_DOWN: if (upper_dev) local_ipaddr = ntohl( ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address); else local_ipaddr = ntohl(ifa->ifa_address); i40iw_manage_arp_cache(iwdev, netdev->dev_addr, &local_ipaddr, true, I40IW_ARP_DELETE); return NOTIFY_OK; case NETDEV_UP: if (upper_dev) local_ipaddr = ntohl( ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address); else local_ipaddr = ntohl(ifa->ifa_address); i40iw_manage_arp_cache(iwdev, netdev->dev_addr, &local_ipaddr, true, I40IW_ARP_ADD); break; case NETDEV_CHANGEADDR: /* Add the address to the IP table */ if (upper_dev) local_ipaddr = ntohl( ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address); else local_ipaddr = ntohl(ifa->ifa_address); i40iw_manage_arp_cache(iwdev, netdev->dev_addr, &local_ipaddr, true, I40IW_ARP_ADD); break; default: break; } return NOTIFY_DONE; } /** * i40iw_inet6addr_event - system notifier for ipv6 netdev events * @notfier: not used * @event: event for notifier * @ptr: if address */ int i40iw_inet6addr_event(struct notifier_block *notifier, unsigned long event, void *ptr) { struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; struct net_device *event_netdev = ifa->idev->dev; struct net_device *netdev; struct i40iw_device *iwdev; struct i40iw_handler *hdl; u32 local_ipaddr6[4]; hdl = i40iw_find_netdev(event_netdev); if (!hdl) return NOTIFY_DONE; iwdev = &hdl->device; netdev = iwdev->ldev->netdev; if (netdev != event_netdev) return NOTIFY_DONE; switch (event) { case NETDEV_DOWN: i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32); i40iw_manage_arp_cache(iwdev, netdev->dev_addr, local_ipaddr6, false, I40IW_ARP_DELETE); return NOTIFY_OK; case NETDEV_UP: /* Fall through */ case NETDEV_CHANGEADDR: i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32); i40iw_manage_arp_cache(iwdev, netdev->dev_addr, local_ipaddr6, false, I40IW_ARP_ADD); break; default: break; } return NOTIFY_DONE; } /** * i40iw_net_event - system notifier for net events * @notfier: not used * @event: event for notifier * @ptr: neighbor */ int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr) { struct neighbour *neigh = ptr; struct i40iw_device *iwdev; struct i40iw_handler *iwhdl; __be32 *p; u32 local_ipaddr[4]; switch (event) { case NETEVENT_NEIGH_UPDATE: iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev); if (!iwhdl) return NOTIFY_DONE; iwdev = &iwhdl->device; p = (__be32 *)neigh->primary_key; i40iw_copy_ip_ntohl(local_ipaddr, p); if (neigh->nud_state & NUD_VALID) { i40iw_manage_arp_cache(iwdev, neigh->ha, local_ipaddr, false, I40IW_ARP_ADD); } else { i40iw_manage_arp_cache(iwdev, neigh->ha, local_ipaddr, false, I40IW_ARP_DELETE); } break; default: break; } return NOTIFY_DONE; } /** * i40iw_get_cqp_request - get cqp struct * @cqp: device cqp ptr * @wait: cqp to be used in wait mode */ struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait) { struct i40iw_cqp_request *cqp_request = NULL; unsigned long flags; spin_lock_irqsave(&cqp->req_lock, flags); if (!list_empty(&cqp->cqp_avail_reqs)) { cqp_request = list_entry(cqp->cqp_avail_reqs.next, struct i40iw_cqp_request, list); list_del_init(&cqp_request->list); } spin_unlock_irqrestore(&cqp->req_lock, flags); if (!cqp_request) { cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC); if (cqp_request) { cqp_request->dynamic = true; INIT_LIST_HEAD(&cqp_request->list); init_waitqueue_head(&cqp_request->waitq); } } if (!cqp_request) { i40iw_pr_err("CQP Request Fail: No Memory"); return NULL; } if (wait) { atomic_set(&cqp_request->refcount, 2); cqp_request->waiting = true; } else { atomic_set(&cqp_request->refcount, 1); } return cqp_request; } /** * i40iw_free_cqp_request - free cqp request * @cqp: cqp ptr * @cqp_request: to be put back in cqp list */ void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request) { unsigned long flags; if (cqp_request->dynamic) { kfree(cqp_request); } else { cqp_request->request_done = false; cqp_request->callback_fcn = NULL; cqp_request->waiting = false; spin_lock_irqsave(&cqp->req_lock, flags); list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs); spin_unlock_irqrestore(&cqp->req_lock, flags); } } /** * i40iw_put_cqp_request - dec ref count and free if 0 * @cqp: cqp ptr * @cqp_request: to be put back in cqp list */ void i40iw_put_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request) { if (atomic_dec_and_test(&cqp_request->refcount)) i40iw_free_cqp_request(cqp, cqp_request); } /** * i40iw_free_qp - callback after destroy cqp completes * @cqp_request: cqp request for destroy qp * @num: not used */ static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num) { struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param; struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp; struct i40iw_device *iwdev; u32 qp_num = iwqp->ibqp.qp_num; iwdev = iwqp->iwdev; i40iw_rem_pdusecount(iwqp->iwpd, iwdev); i40iw_free_qp_resources(iwdev, iwqp, qp_num); i40iw_rem_devusecount(iwdev); } /** * i40iw_wait_event - wait for completion * @iwdev: iwarp device * @cqp_request: cqp request to wait */ static int i40iw_wait_event(struct i40iw_device *iwdev, struct i40iw_cqp_request *cqp_request) { struct cqp_commands_info *info = &cqp_request->info; struct i40iw_cqp *iwcqp = &iwdev->cqp; bool cqp_error = false; int err_code = 0; int timeout_ret = 0; timeout_ret = wait_event_timeout(cqp_request->waitq, cqp_request->request_done, I40IW_EVENT_TIMEOUT); if (!timeout_ret) { i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n", info->cqp_cmd, timeout_ret); err_code = -ETIME; i40iw_request_reset(iwdev); goto done; } cqp_error = cqp_request->compl_info.error; if (cqp_error) { i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n", info->cqp_cmd, cqp_request->compl_info.maj_err_code, cqp_request->compl_info.min_err_code); err_code = -EPROTO; goto done; } done: i40iw_put_cqp_request(iwcqp, cqp_request); return err_code; } /** * i40iw_handle_cqp_op - process cqp command * @iwdev: iwarp device * @cqp_request: cqp request to process */ enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev, struct i40iw_cqp_request *cqp_request) { struct i40iw_sc_dev *dev = &iwdev->sc_dev; enum i40iw_status_code status; struct cqp_commands_info *info = &cqp_request->info; int err_code = 0; status = i40iw_process_cqp_cmd(dev, info); if (status) { i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd); i40iw_free_cqp_request(&iwdev->cqp, cqp_request); return status; } if (cqp_request->waiting) err_code = i40iw_wait_event(iwdev, cqp_request); if (err_code) status = I40IW_ERR_CQP_COMPL_ERROR; return status; } /** * i40iw_add_devusecount - add dev refcount * @iwdev: dev for refcount */ void i40iw_add_devusecount(struct i40iw_device *iwdev) { atomic64_inc(&iwdev->use_count); } /** * i40iw_rem_devusecount - decrement refcount for dev * @iwdev: device */ void i40iw_rem_devusecount(struct i40iw_device *iwdev) { if (!atomic64_dec_and_test(&iwdev->use_count)) return; wake_up(&iwdev->close_wq); } /** * i40iw_add_pdusecount - add pd refcount * @iwpd: pd for refcount */ void i40iw_add_pdusecount(struct i40iw_pd *iwpd) { atomic_inc(&iwpd->usecount); } /** * i40iw_rem_pdusecount - decrement refcount for pd and free if 0 * @iwpd: pd for refcount * @iwdev: iwarp device */ void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev) { if (!atomic_dec_and_test(&iwpd->usecount)) return; i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id); kfree(iwpd); } /** * i40iw_add_ref - add refcount for qp * @ibqp: iqarp qp */ void i40iw_add_ref(struct ib_qp *ibqp) { struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp; atomic_inc(&iwqp->refcount); } /** * i40iw_rem_ref - rem refcount for qp and free if 0 * @ibqp: iqarp qp */ void i40iw_rem_ref(struct ib_qp *ibqp) { struct i40iw_qp *iwqp; enum i40iw_status_code status; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; struct i40iw_device *iwdev; u32 qp_num; unsigned long flags; iwqp = to_iwqp(ibqp); iwdev = iwqp->iwdev; spin_lock_irqsave(&iwdev->qptable_lock, flags); if (!atomic_dec_and_test(&iwqp->refcount)) { spin_unlock_irqrestore(&iwdev->qptable_lock, flags); return; } qp_num = iwqp->ibqp.qp_num; iwdev->qp_table[qp_num] = NULL; spin_unlock_irqrestore(&iwdev->qptable_lock, flags); cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false); if (!cqp_request) return; cqp_request->callback_fcn = i40iw_free_qp; cqp_request->param = (void *)&iwqp->sc_qp; cqp_info = &cqp_request->info; cqp_info->cqp_cmd = OP_QP_DESTROY; cqp_info->post_sq = 1; cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp; cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request; cqp_info->in.u.qp_destroy.remove_hash_idx = true; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP Destroy QP fail"); } /** * i40iw_get_qp - get qp address * @device: iwarp device * @qpn: qp number */ struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn) { struct i40iw_device *iwdev = to_iwdev(device); if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp)) return NULL; return &iwdev->qp_table[qpn]->ibqp; } /** * i40iw_debug_buf - print debug msg and buffer is mask set * @dev: hardware control device structure * @mask: mask to compare if to print debug buffer * @buf: points buffer addr * @size: saize of buffer to print */ void i40iw_debug_buf(struct i40iw_sc_dev *dev, enum i40iw_debug_flag mask, char *desc, u64 *buf, u32 size) { u32 i; if (!(dev->debug_mask & mask)) return; i40iw_debug(dev, mask, "%s\n", desc); i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf, (unsigned long long)virt_to_phys(buf)); for (i = 0; i < size; i += 8) i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]); } /** * i40iw_get_hw_addr - return hw addr * @par: points to shared dev */ u8 __iomem *i40iw_get_hw_addr(void *par) { struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par; return dev->hw->hw_addr; } /** * i40iw_remove_head - return head entry and remove from list * @list: list for entry */ void *i40iw_remove_head(struct list_head *list) { struct list_head *entry; if (list_empty(list)) return NULL; entry = (void *)list->next; list_del(entry); return (void *)entry; } /** * i40iw_allocate_dma_mem - Memory alloc helper fn * @hw: pointer to the HW structure * @mem: ptr to mem struct to fill out * @size: size of memory requested * @alignment: what to align the allocation to */ enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem, u64 size, u32 alignment) { struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context; if (!mem) return I40IW_ERR_PARAM; mem->size = ALIGN(size, alignment); mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size, (dma_addr_t *)&mem->pa, GFP_KERNEL); if (!mem->va) return I40IW_ERR_NO_MEMORY; return 0; } /** * i40iw_free_dma_mem - Memory free helper fn * @hw: pointer to the HW structure * @mem: ptr to mem struct to free */ void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem) { struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context; if (!mem || !mem->va) return; dma_free_coherent(&pcidev->dev, mem->size, mem->va, (dma_addr_t)mem->pa); mem->va = NULL; } /** * i40iw_allocate_virt_mem - virtual memory alloc helper fn * @hw: pointer to the HW structure * @mem: ptr to mem struct to fill out * @size: size of memory requested */ enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw, struct i40iw_virt_mem *mem, u32 size) { if (!mem) return I40IW_ERR_PARAM; mem->size = size; mem->va = kzalloc(size, GFP_KERNEL); if (mem->va) return 0; else return I40IW_ERR_NO_MEMORY; } /** * i40iw_free_virt_mem - virtual memory free helper fn * @hw: pointer to the HW structure * @mem: ptr to mem struct to free */ enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw, struct i40iw_virt_mem *mem) { if (!mem) return I40IW_ERR_PARAM; /* * mem->va points to the parent of mem, so both mem and mem->va * can not be touched once mem->va is freed */ kfree(mem->va); return 0; } /** * i40iw_cqp_sds_cmd - create cqp command for sd * @dev: hardware control device structure * @sd_info: information for sd cqp * */ enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev, struct i40iw_update_sds_info *sdinfo) { enum i40iw_status_code status; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) return I40IW_ERR_NO_MEMORY; cqp_info = &cqp_request->info; memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo, sizeof(cqp_info->in.u.update_pe_sds.info)); cqp_info->cqp_cmd = OP_UPDATE_PE_SDS; cqp_info->post_sq = 1; cqp_info->in.u.update_pe_sds.dev = dev; cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP Update SD's fail"); return status; } /** * i40iw_qp_suspend_resume - cqp command for suspend/resume * @dev: hardware control device structure * @qp: hardware control qp * @suspend: flag if suspend or resume */ void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend) { struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; struct i40iw_cqp_request *cqp_request; struct i40iw_sc_cqp *cqp = dev->cqp; struct cqp_commands_info *cqp_info; enum i40iw_status_code status; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false); if (!cqp_request) return; cqp_info = &cqp_request->info; cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME; cqp_info->in.u.suspend_resume.cqp = cqp; cqp_info->in.u.suspend_resume.qp = qp; cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP QP Suspend/Resume fail"); } /** * i40iw_qp_mss_modify - modify mss for qp * @dev: hardware control device structure * @qp: hardware control qp */ void i40iw_qp_mss_modify(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp) { struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp; struct i40iw_modify_qp_info info; memset(&info, 0, sizeof(info)); info.mss_change = true; info.new_mss = dev->mss; i40iw_hw_modify_qp(iwdev, iwqp, &info, false); } /** * i40iw_term_modify_qp - modify qp for term message * @qp: hardware control qp * @next_state: qp's next state * @term: terminate code * @term_len: length */ void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len) { struct i40iw_qp *iwqp; iwqp = (struct i40iw_qp *)qp->back_qp; i40iw_next_iw_state(iwqp, next_state, 0, term, term_len); }; /** * i40iw_terminate_done - after terminate is completed * @qp: hardware control qp * @timeout_occurred: indicates if terminate timer expired */ void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred) { struct i40iw_qp *iwqp; u32 next_iwarp_state = I40IW_QP_STATE_ERROR; u8 hte = 0; bool first_time; unsigned long flags; iwqp = (struct i40iw_qp *)qp->back_qp; spin_lock_irqsave(&iwqp->lock, flags); if (iwqp->hte_added) { iwqp->hte_added = 0; hte = 1; } first_time = !(qp->term_flags & I40IW_TERM_DONE); qp->term_flags |= I40IW_TERM_DONE; spin_unlock_irqrestore(&iwqp->lock, flags); if (first_time) { if (!timeout_occurred) i40iw_terminate_del_timer(qp); else next_iwarp_state = I40IW_QP_STATE_CLOSING; i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0); i40iw_cm_disconn(iwqp); } } /** * i40iw_terminate_imeout - timeout happened * @context: points to iwarp qp */ static void i40iw_terminate_timeout(unsigned long context) { struct i40iw_qp *iwqp = (struct i40iw_qp *)context; struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp; i40iw_terminate_done(qp, 1); } /** * i40iw_terminate_start_timer - start terminate timeout * @qp: hardware control qp */ void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp) { struct i40iw_qp *iwqp; iwqp = (struct i40iw_qp *)qp->back_qp; init_timer(&iwqp->terminate_timer); iwqp->terminate_timer.function = i40iw_terminate_timeout; iwqp->terminate_timer.expires = jiffies + HZ; iwqp->terminate_timer.data = (unsigned long)iwqp; add_timer(&iwqp->terminate_timer); } /** * i40iw_terminate_del_timer - delete terminate timeout * @qp: hardware control qp */ void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp) { struct i40iw_qp *iwqp; iwqp = (struct i40iw_qp *)qp->back_qp; del_timer(&iwqp->terminate_timer); } /** * i40iw_cqp_generic_worker - generic worker for cqp * @work: work pointer */ static void i40iw_cqp_generic_worker(struct work_struct *work) { struct i40iw_virtchnl_work_info *work_info = &((struct virtchnl_work *)work)->work_info; if (work_info->worker_vf_dev) work_info->callback_fcn(work_info->worker_vf_dev); } /** * i40iw_cqp_spawn_worker - spawn worket thread * @iwdev: device struct pointer * @work_info: work request info * @iw_vf_idx: virtual function index */ void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev, struct i40iw_virtchnl_work_info *work_info, u32 iw_vf_idx) { struct virtchnl_work *work; struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; work = &iwdev->virtchnl_w[iw_vf_idx]; memcpy(&work->work_info, work_info, sizeof(*work_info)); INIT_WORK(&work->work, i40iw_cqp_generic_worker); queue_work(iwdev->virtchnl_wq, &work->work); } /** * i40iw_cqp_manage_hmc_fcn_worker - * @work: work pointer for hmc info */ static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work) { struct i40iw_cqp_request *cqp_request = ((struct virtchnl_work *)work)->cqp_request; struct i40iw_ccq_cqe_info ccq_cqe_info; struct i40iw_hmc_fcn_info *hmcfcninfo = &cqp_request->info.in.u.manage_hmc_pm.info; struct i40iw_device *iwdev = (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev; ccq_cqe_info.cqp = NULL; ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code; ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code; ccq_cqe_info.op_code = cqp_request->compl_info.op_code; ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val; ccq_cqe_info.scratch = 0; ccq_cqe_info.error = cqp_request->compl_info.error; hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev, hmcfcninfo->cqp_callback_param, &ccq_cqe_info); i40iw_put_cqp_request(&iwdev->cqp, cqp_request); } /** * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion * @cqp_request: cqp request info struct for hmc fun * @unused: unused param of callback */ static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request, u32 unused) { struct virtchnl_work *work; struct i40iw_hmc_fcn_info *hmcfcninfo = &cqp_request->info.in.u.manage_hmc_pm.info; struct i40iw_device *iwdev = (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev-> back_dev; if (hmcfcninfo && hmcfcninfo->callback_fcn) { i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__); atomic_inc(&cqp_request->refcount); work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx]; work->cqp_request = cqp_request; INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker); queue_work(iwdev->virtchnl_wq, &work->work); i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__); } else { i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__); } } /** * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc * @dev: hardware control device structure * @hmcfcninfo: info for hmc */ enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev, struct i40iw_hmc_fcn_info *hmcfcninfo) { enum i40iw_status_code status; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__); cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false); if (!cqp_request) return I40IW_ERR_NO_MEMORY; cqp_info = &cqp_request->info; cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback; cqp_request->param = hmcfcninfo; memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo, sizeof(*hmcfcninfo)); cqp_info->in.u.manage_hmc_pm.dev = dev; cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE; cqp_info->post_sq = 1; cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP Manage HMC fail"); return status; } /** * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm * @iwdev: function device struct * @values_mem: buffer for fpm * @hmc_fn_id: function id for fpm */ enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev, struct i40iw_dma_mem *values_mem, u8 hmc_fn_id) { enum i40iw_status_code status; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) return I40IW_ERR_NO_MEMORY; cqp_info = &cqp_request->info; cqp_request->param = NULL; cqp_info->in.u.query_fpm_values.cqp = dev->cqp; cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa; cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va; cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id; cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES; cqp_info->post_sq = 1; cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP Query FPM fail"); return status; } /** * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw * @dev: hardware control device structure * @values_mem: buffer with fpm values * @hmc_fn_id: function id for fpm */ enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev, struct i40iw_dma_mem *values_mem, u8 hmc_fn_id) { enum i40iw_status_code status; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) return I40IW_ERR_NO_MEMORY; cqp_info = &cqp_request->info; cqp_request->param = NULL; cqp_info->in.u.commit_fpm_values.cqp = dev->cqp; cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa; cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va; cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id; cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES; cqp_info->post_sq = 1; cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP Commit FPM fail"); return status; } /** * i40iw_vf_wait_vchnl_resp - wait for channel msg * @iwdev: function's device struct */ enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev) { struct i40iw_device *iwdev = dev->back_dev; int timeout_ret; i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n", __func__, __LINE__, dev, iwdev); atomic_set(&iwdev->vchnl_msgs, 2); timeout_ret = wait_event_timeout(iwdev->vchnl_waitq, (atomic_read(&iwdev->vchnl_msgs) == 1), I40IW_VCHNL_EVENT_TIMEOUT); atomic_dec(&iwdev->vchnl_msgs); if (!timeout_ret) { i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret); atomic_set(&iwdev->vchnl_msgs, 0); dev->vchnl_up = false; return I40IW_ERR_TIMEOUT; } wake_up(&dev->vf_reqs); return 0; } /** * i40iw_ieq_mpa_crc_ae - generate AE for crc error * @dev: hardware control device structure * @qp: hardware control qp */ void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp) { struct i40iw_qp_flush_info info; struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__); memset(&info, 0, sizeof(info)); info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR; info.generate_ae = true; info.ae_source = 0x3; (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false); } /** * i40iw_init_hash_desc - initialize hash for crc calculation * @desc: cryption type */ enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc) { struct crypto_shash *tfm; struct shash_desc *tdesc; tfm = crypto_alloc_shash("crc32c", 0, 0); if (IS_ERR(tfm)) return I40IW_ERR_MPA_CRC; tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm), GFP_KERNEL); if (!tdesc) { crypto_free_shash(tfm); return I40IW_ERR_MPA_CRC; } tdesc->tfm = tfm; *desc = tdesc; return 0; } /** * i40iw_free_hash_desc - free hash desc * @desc: to be freed */ void i40iw_free_hash_desc(struct shash_desc *desc) { if (desc) { crypto_free_shash(desc->tfm); kfree(desc); } } /** * i40iw_alloc_query_fpm_buf - allocate buffer for fpm * @dev: hardware control device structure * @mem: buffer ptr for fpm to be allocated * @return: memory allocation status */ enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev, struct i40iw_dma_mem *mem) { enum i40iw_status_code status; struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE, I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK); return status; } /** * i40iw_ieq_check_mpacrc - check if mpa crc is OK * @desc: desc for hash * @addr: address of buffer for crc * @length: length of buffer * @value: value to be compared */ enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc, void *addr, u32 length, u32 value) { u32 crc = 0; int ret; enum i40iw_status_code ret_code = 0; crypto_shash_init(desc); ret = crypto_shash_update(desc, addr, length); if (!ret) crypto_shash_final(desc, (u8 *)&crc); if (crc != value) { i40iw_pr_err("mpa crc check fail\n"); ret_code = I40IW_ERR_MPA_CRC; } return ret_code; } /** * i40iw_ieq_get_qp - get qp based on quad in puda buffer * @dev: hardware control device structure * @buf: receive puda buffer on exception q */ struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev, struct i40iw_puda_buf *buf) { struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; struct i40iw_qp *iwqp; struct i40iw_cm_node *cm_node; u32 loc_addr[4], rem_addr[4]; u16 loc_port, rem_port; struct ipv6hdr *ip6h; struct iphdr *iph = (struct iphdr *)buf->iph; struct tcphdr *tcph = (struct tcphdr *)buf->tcph; if (iph->version == 4) { memset(loc_addr, 0, sizeof(loc_addr)); loc_addr[0] = ntohl(iph->daddr); memset(rem_addr, 0, sizeof(rem_addr)); rem_addr[0] = ntohl(iph->saddr); } else { ip6h = (struct ipv6hdr *)buf->iph; i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32); i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32); } loc_port = ntohs(tcph->dest); rem_port = ntohs(tcph->source); cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port, loc_addr, false); if (!cm_node) return NULL; iwqp = cm_node->iwqp; return &iwqp->sc_qp; } /** * i40iw_ieq_update_tcpip_info - update tcpip in the buffer * @buf: puda to update * @length: length of buffer * @seqnum: seq number for tcp */ void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum) { struct tcphdr *tcph; struct iphdr *iph; u16 iphlen; u16 packetsize; u8 *addr = (u8 *)buf->mem.va; iphlen = (buf->ipv4) ? 20 : 40; iph = (struct iphdr *)(addr + buf->maclen); tcph = (struct tcphdr *)(addr + buf->maclen + iphlen); packetsize = length + buf->tcphlen + iphlen; iph->tot_len = htons(packetsize); tcph->seq = htonl(seqnum); } /** * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer * @info: to get information * @buf: puda buffer */ enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info, struct i40iw_puda_buf *buf) { struct iphdr *iph; struct ipv6hdr *ip6h; struct tcphdr *tcph; u16 iphlen; u16 pkt_len; u8 *mem = (u8 *)buf->mem.va; struct ethhdr *ethh = (struct ethhdr *)buf->mem.va; if (ethh->h_proto == htons(0x8100)) { info->vlan_valid = true; buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK; } buf->maclen = (info->vlan_valid) ? 18 : 14; iphlen = (info->l3proto) ? 40 : 20; buf->ipv4 = (info->l3proto) ? false : true; buf->iph = mem + buf->maclen; iph = (struct iphdr *)buf->iph; buf->tcph = buf->iph + iphlen; tcph = (struct tcphdr *)buf->tcph; if (buf->ipv4) { pkt_len = ntohs(iph->tot_len); } else { ip6h = (struct ipv6hdr *)buf->iph; pkt_len = ntohs(ip6h->payload_len) + iphlen; } buf->totallen = pkt_len + buf->maclen; if (info->payload_len < buf->totallen) { i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n", info->payload_len, buf->totallen); return I40IW_ERR_INVALID_SIZE; } buf->tcphlen = (tcph->doff) << 2; buf->datalen = pkt_len - iphlen - buf->tcphlen; buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL; buf->hdrlen = buf->maclen + iphlen + buf->tcphlen; buf->seqnum = ntohl(tcph->seq); return 0; } /** * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats * @dev: hardware control device structure */ static void i40iw_hw_stats_timeout(unsigned long dev) { struct i40iw_sc_dev *pf_dev = (struct i40iw_sc_dev *)dev; struct i40iw_dev_pestat *pf_devstat = &pf_dev->dev_pestat; struct i40iw_dev_pestat *vf_devstat = NULL; u16 iw_vf_idx; unsigned long flags; /*PF*/ pf_devstat->ops.iw_hw_stat_read_all(pf_devstat, &pf_devstat->hw_stats); for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) { spin_lock_irqsave(&pf_devstat->stats_lock, flags); if (pf_dev->vf_dev[iw_vf_idx]) { if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) { vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->dev_pestat; vf_devstat->ops.iw_hw_stat_read_all(vf_devstat, &vf_devstat->hw_stats); } } spin_unlock_irqrestore(&pf_devstat->stats_lock, flags); } mod_timer(&pf_devstat->stats_timer, jiffies + msecs_to_jiffies(STATS_TIMER_DELAY)); } /** * i40iw_hw_stats_start_timer - Start periodic stats timer * @dev: hardware control device structure */ void i40iw_hw_stats_start_timer(struct i40iw_sc_dev *dev) { struct i40iw_dev_pestat *devstat = &dev->dev_pestat; init_timer(&devstat->stats_timer); devstat->stats_timer.function = i40iw_hw_stats_timeout; devstat->stats_timer.data = (unsigned long)dev; mod_timer(&devstat->stats_timer, jiffies + msecs_to_jiffies(STATS_TIMER_DELAY)); } /** * i40iw_hw_stats_del_timer - Delete periodic stats timer * @dev: hardware control device structure */ void i40iw_hw_stats_del_timer(struct i40iw_sc_dev *dev) { struct i40iw_dev_pestat *devstat = &dev->dev_pestat; del_timer_sync(&devstat->stats_timer); }