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- /*******************************************************************************
- *
- * 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 <linux/module.h>
- #include <linux/moduleparam.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/ethtool.h>
- #include <linux/mii.h>
- #include <linux/if_vlan.h>
- #include <linux/crc32.h>
- #include <linux/in.h>
- #include <linux/ip.h>
- #include <linux/tcp.h>
- #include <linux/init.h>
- #include <linux/io.h>
- #include <asm/irq.h>
- #include <asm/byteorder.h>
- #include <net/netevent.h>
- #include <net/neighbour.h>
- #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 ipv4 addr 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;
- u32 action = I40IW_ARP_ADD;
- hdl = i40iw_find_netdev(event_netdev);
- if (!hdl)
- return NOTIFY_DONE;
- iwdev = &hdl->device;
- if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
- return NOTIFY_DONE;
- netdev = iwdev->ldev->netdev;
- upper_dev = netdev_master_upper_dev_get(netdev);
- if (netdev != event_netdev)
- return NOTIFY_DONE;
- if (upper_dev) {
- struct in_device *in;
- rcu_read_lock();
- in = __in_dev_get_rcu(upper_dev);
- if (!in->ifa_list)
- local_ipaddr = 0;
- else
- local_ipaddr = ntohl(in->ifa_list->ifa_address);
- rcu_read_unlock();
- } else {
- local_ipaddr = ntohl(ifa->ifa_address);
- }
- switch (event) {
- case NETDEV_DOWN:
- action = I40IW_ARP_DELETE;
- /* Fall through */
- case NETDEV_UP:
- /* Fall through */
- case NETDEV_CHANGEADDR:
- /* Just skip if no need to handle ARP cache */
- if (!local_ipaddr)
- break;
- i40iw_manage_arp_cache(iwdev,
- netdev->dev_addr,
- &local_ipaddr,
- true,
- action);
- i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
- (action == I40IW_ARP_ADD) ? true : false);
- break;
- default:
- break;
- }
- return NOTIFY_DONE;
- }
- /**
- * i40iw_inet6addr_event - system notifier for ipv6 addr 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];
- u32 action = I40IW_ARP_ADD;
- hdl = i40iw_find_netdev(event_netdev);
- if (!hdl)
- return NOTIFY_DONE;
- iwdev = &hdl->device;
- if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
- return NOTIFY_DONE;
- netdev = iwdev->ldev->netdev;
- if (netdev != event_netdev)
- return NOTIFY_DONE;
- i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
- switch (event) {
- case NETDEV_DOWN:
- action = I40IW_ARP_DELETE;
- /* Fall through */
- case NETDEV_UP:
- /* Fall through */
- case NETDEV_CHANGEADDR:
- i40iw_manage_arp_cache(iwdev,
- netdev->dev_addr,
- local_ipaddr6,
- false,
- action);
- i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
- (action == I40IW_ARP_ADD) ? true : false);
- break;
- default:
- break;
- }
- return NOTIFY_DONE;
- }
- /**
- * i40iw_net_event - system notifier for netevents
- * @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;
- if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
- return NOTIFY_DONE;
- 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_netdevice_event - system notifier for netdev events
- * @notfier: not used
- * @event: event for notifier
- * @ptr: netdev
- */
- int i40iw_netdevice_event(struct notifier_block *notifier,
- unsigned long event,
- void *ptr)
- {
- struct net_device *event_netdev;
- struct net_device *netdev;
- struct i40iw_device *iwdev;
- struct i40iw_handler *hdl;
- event_netdev = netdev_notifier_info_to_dev(ptr);
- hdl = i40iw_find_netdev(event_netdev);
- if (!hdl)
- return NOTIFY_DONE;
- iwdev = &hdl->device;
- if (iwdev->init_state < RDMA_DEV_REGISTERED || iwdev->closing)
- return NOTIFY_DONE;
- netdev = iwdev->ldev->netdev;
- if (netdev != event_netdev)
- return NOTIFY_DONE;
- iwdev->iw_status = 1;
- switch (event) {
- case NETDEV_DOWN:
- iwdev->iw_status = 0;
- /* Fall through */
- case NETDEV_UP:
- i40iw_port_ibevent(iwdev);
- 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)
- {
- struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
- 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);
- }
- wake_up(&iwdev->close_wq);
- }
- /**
- * 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_pending_cqp_request -free pending cqp request objs
- * @cqp: cqp ptr
- * @cqp_request: to be put back in cqp list
- */
- static void i40iw_free_pending_cqp_request(struct i40iw_cqp *cqp,
- struct i40iw_cqp_request *cqp_request)
- {
- struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
- if (cqp_request->waiting) {
- cqp_request->compl_info.error = true;
- cqp_request->request_done = true;
- wake_up(&cqp_request->waitq);
- }
- i40iw_put_cqp_request(cqp, cqp_request);
- wait_event_timeout(iwdev->close_wq,
- !atomic_read(&cqp_request->refcount),
- 1000);
- }
- /**
- * i40iw_cleanup_pending_cqp_op - clean-up cqp with no completions
- * @iwdev: iwarp device
- */
- void i40iw_cleanup_pending_cqp_op(struct i40iw_device *iwdev)
- {
- struct i40iw_sc_dev *dev = &iwdev->sc_dev;
- struct i40iw_cqp *cqp = &iwdev->cqp;
- struct i40iw_cqp_request *cqp_request = NULL;
- struct cqp_commands_info *pcmdinfo = NULL;
- u32 i, pending_work, wqe_idx;
- pending_work = I40IW_RING_WORK_AVAILABLE(cqp->sc_cqp.sq_ring);
- wqe_idx = I40IW_RING_GETCURRENT_TAIL(cqp->sc_cqp.sq_ring);
- for (i = 0; i < pending_work; i++) {
- cqp_request = (struct i40iw_cqp_request *)(unsigned long)cqp->scratch_array[wqe_idx];
- if (cqp_request)
- i40iw_free_pending_cqp_request(cqp, cqp_request);
- wqe_idx = (wqe_idx + 1) % I40IW_RING_GETSIZE(cqp->sc_cqp.sq_ring);
- }
- while (!list_empty(&dev->cqp_cmd_head)) {
- pcmdinfo = (struct cqp_commands_info *)i40iw_remove_head(&dev->cqp_cmd_head);
- cqp_request = container_of(pcmdinfo, struct i40iw_cqp_request, info);
- if (cqp_request)
- i40iw_free_pending_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;
- struct i40iw_cqp_timeout cqp_timeout;
- bool cqp_error = false;
- int err_code = 0;
- memset(&cqp_timeout, 0, sizeof(cqp_timeout));
- cqp_timeout.compl_cqp_cmds = iwdev->sc_dev.cqp_cmd_stats[OP_COMPLETED_COMMANDS];
- do {
- if (wait_event_timeout(cqp_request->waitq,
- cqp_request->request_done, CQP_COMPL_WAIT_TIME))
- break;
- i40iw_check_cqp_progress(&cqp_timeout, &iwdev->sc_dev);
- if (cqp_timeout.count < CQP_TIMEOUT_THRESHOLD)
- continue;
- i40iw_pr_err("error cqp command 0x%x timed out", info->cqp_cmd);
- err_code = -ETIME;
- if (!iwdev->reset) {
- iwdev->reset = true;
- i40iw_request_reset(iwdev);
- }
- goto done;
- } while (1);
- 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;
- if (iwdev->reset) {
- i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
- return I40IW_ERR_CQP_COMPL_ERROR;
- }
- 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)
- return;
- i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
- i40iw_free_qp_resources(iwdev, iwqp, qp_num);
- i40iw_rem_devusecount(iwdev);
- }
- /**
- * 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_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(struct timer_list *t)
- {
- struct i40iw_qp *iwqp = from_timer(iwqp, t, terminate_timer);
- struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
- i40iw_terminate_done(qp, 1);
- i40iw_rem_ref(&iwqp->ibqp);
- }
- /**
- * 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;
- i40iw_add_ref(&iwqp->ibqp);
- timer_setup(&iwqp->terminate_timer, i40iw_terminate_timeout, 0);
- iwqp->terminate_timer.expires = jiffies + HZ;
- 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;
- if (del_timer(&iwqp->terminate_timer))
- i40iw_rem_ref(&iwqp->ibqp);
- }
- /**
- * 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_cqp_cq_create_cmd - create a cq for the cqp
- * @dev: device pointer
- * @cq: pointer to created cq
- */
- enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
- struct i40iw_sc_cq *cq)
- {
- struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
- struct i40iw_cqp *iwcqp = &iwdev->cqp;
- struct i40iw_cqp_request *cqp_request;
- struct cqp_commands_info *cqp_info;
- enum i40iw_status_code status;
- cqp_request = i40iw_get_cqp_request(iwcqp, true);
- if (!cqp_request)
- return I40IW_ERR_NO_MEMORY;
- cqp_info = &cqp_request->info;
- cqp_info->cqp_cmd = OP_CQ_CREATE;
- cqp_info->post_sq = 1;
- cqp_info->in.u.cq_create.cq = cq;
- cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
- status = i40iw_handle_cqp_op(iwdev, cqp_request);
- if (status)
- i40iw_pr_err("CQP-OP Create QP fail");
- return status;
- }
- /**
- * i40iw_cqp_qp_create_cmd - create a qp for the cqp
- * @dev: device pointer
- * @qp: pointer to created qp
- */
- enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
- struct i40iw_sc_qp *qp)
- {
- struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
- struct i40iw_cqp *iwcqp = &iwdev->cqp;
- struct i40iw_cqp_request *cqp_request;
- struct cqp_commands_info *cqp_info;
- struct i40iw_create_qp_info *qp_info;
- enum i40iw_status_code status;
- cqp_request = i40iw_get_cqp_request(iwcqp, true);
- if (!cqp_request)
- return I40IW_ERR_NO_MEMORY;
- cqp_info = &cqp_request->info;
- qp_info = &cqp_request->info.in.u.qp_create.info;
- memset(qp_info, 0, sizeof(*qp_info));
- qp_info->cq_num_valid = true;
- qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
- cqp_info->cqp_cmd = OP_QP_CREATE;
- cqp_info->post_sq = 1;
- cqp_info->in.u.qp_create.qp = qp;
- cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
- status = i40iw_handle_cqp_op(iwdev, cqp_request);
- if (status)
- i40iw_pr_err("CQP-OP QP create fail");
- return status;
- }
- /**
- * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
- * @dev: device pointer
- * @cq: pointer to cq
- */
- void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
- {
- struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
- i40iw_cq_wq_destroy(iwdev, cq);
- }
- /**
- * i40iw_cqp_qp_destroy_cmd - destroy the cqp
- * @dev: device pointer
- * @qp: pointer to qp
- */
- void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
- {
- struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
- struct i40iw_cqp *iwcqp = &iwdev->cqp;
- struct i40iw_cqp_request *cqp_request;
- struct cqp_commands_info *cqp_info;
- enum i40iw_status_code status;
- cqp_request = i40iw_get_cqp_request(iwcqp, true);
- if (!cqp_request)
- return;
- cqp_info = &cqp_request->info;
- memset(cqp_info, 0, sizeof(*cqp_info));
- cqp_info->cqp_cmd = OP_QP_DESTROY;
- cqp_info->post_sq = 1;
- cqp_info->in.u.qp_destroy.qp = 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 QP_DESTROY fail");
- }
- /**
- * 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_gen_ae_info info;
- struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
- i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
- info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
- info.ae_source = I40IW_AE_SOURCE_RQ;
- i40iw_gen_ae(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, true);
- 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
- * @vsi: pointer to the vsi structure
- */
- static void i40iw_hw_stats_timeout(struct timer_list *t)
- {
- struct i40iw_vsi_pestat *pf_devstat = from_timer(pf_devstat, t,
- stats_timer);
- struct i40iw_sc_vsi *sc_vsi = pf_devstat->vsi;
- struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
- struct i40iw_vsi_pestat *vf_devstat = NULL;
- u16 iw_vf_idx;
- unsigned long flags;
- /*PF*/
- i40iw_hw_stats_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->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]->pestat;
- i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
- }
- }
- spin_unlock_irqrestore(&pf_devstat->lock, flags);
- }
- mod_timer(&pf_devstat->stats_timer,
- jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
- }
- /**
- * i40iw_hw_stats_start_timer - Start periodic stats timer
- * @vsi: pointer to the vsi structure
- */
- void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
- {
- struct i40iw_vsi_pestat *devstat = vsi->pestat;
- timer_setup(&devstat->stats_timer, i40iw_hw_stats_timeout, 0);
- mod_timer(&devstat->stats_timer,
- jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
- }
- /**
- * i40iw_hw_stats_stop_timer - Delete periodic stats timer
- * @vsi: pointer to the vsi structure
- */
- void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
- {
- struct i40iw_vsi_pestat *devstat = vsi->pestat;
- del_timer_sync(&devstat->stats_timer);
- }
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