drivers/infiniband/hw/i40iw/i40iw_utils.c

   1 /*******************************************************************************
   2 *
   3 * Copyright (c) 2015-2016 Intel Corporation.  All rights reserved.
   4 *
   5 * This software is available to you under a choice of one of two
   6 * licenses.  You may choose to be licensed under the terms of the GNU
   7 * General Public License (GPL) Version 2, available from the file
   8 * COPYING in the main directory of this source tree, or the
   9 * OpenFabrics.org BSD license below:
  10 *
  11 *   Redistribution and use in source and binary forms, with or
  12 *   without modification, are permitted provided that the following
  13 *   conditions are met:
  14 *
  15 *    - Redistributions of source code must retain the above
  16 *       copyright notice, this list of conditions and the following
  17 *       disclaimer.
  18 *
  19 *    - Redistributions in binary form must reproduce the above
  20 *       copyright notice, this list of conditions and the following
  21 *       disclaimer in the documentation and/or other materials
  22 *       provided with the distribution.
  23 *
  24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31 * SOFTWARE.
  32 *
  33 *******************************************************************************/
  34
  35 #include <linux/module.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/ethtool.h>
  40 #include <linux/mii.h>
  41 #include <linux/if_vlan.h>
  42 #include <linux/crc32.h>
  43 #include <linux/in.h>
  44 #include <linux/ip.h>
  45 #include <linux/tcp.h>
  46 #include <linux/init.h>
  47 #include <linux/io.h>
  48 #include <asm/irq.h>
  49 #include <asm/byteorder.h>
  50 #include <net/netevent.h>
  51 #include <net/neighbour.h>
  52 #include "i40iw.h"
  53
  54 /**
  55  * i40iw_arp_table - manage arp table
  56  * @iwdev: iwarp device
  57  * @ip_addr: ip address for device
  58  * @mac_addr: mac address ptr
  59  * @action: modify, delete or add
  60  */
  61 int i40iw_arp_table(struct i40iw_device *iwdev,
  62                     u32 *ip_addr,
  63                     bool ipv4,
  64                     u8 *mac_addr,
  65                     u32 action)
  66 {
  67         int arp_index;
  68         int err;
  69         u32 ip[4];
  70
  71         if (ipv4) {
  72                 memset(ip, 0, sizeof(ip));
  73                 ip[0] = *ip_addr;
  74         } else {
  75                 memcpy(ip, ip_addr, sizeof(ip));
  76         }
  77
  78         for (arp_index = 0; (u32)arp_index < iwdev->arp_table_size; arp_index++)
  79                 if (memcmp(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)) == 0)
  80                         break;
  81         switch (action) {
  82         case I40IW_ARP_ADD:
  83                 if (arp_index != iwdev->arp_table_size)
  84                         return -1;
  85
  86                 arp_index = 0;
  87                 err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps,
  88                                            iwdev->arp_table_size,
  89                                            (u32 *)&arp_index,
  90                                            &iwdev->next_arp_index);
  91
  92                 if (err)
  93                         return err;
  94
  95                 memcpy(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip));
  96                 ether_addr_copy(iwdev->arp_table[arp_index].mac_addr, mac_addr);
  97                 break;
  98         case I40IW_ARP_RESOLVE:
  99                 if (arp_index == iwdev->arp_table_size)
 100                         return -1;
 101                 break;
 102         case I40IW_ARP_DELETE:
 103                 if (arp_index == iwdev->arp_table_size)
 104                         return -1;
 105                 memset(iwdev->arp_table[arp_index].ip_addr, 0,
 106                        sizeof(iwdev->arp_table[arp_index].ip_addr));
 107                 eth_zero_addr(iwdev->arp_table[arp_index].mac_addr);
 108                 i40iw_free_resource(iwdev, iwdev->allocated_arps, arp_index);
 109                 break;
 110         default:
 111                 return -1;
 112         }
 113         return arp_index;
 114 }
 115
 116 /**
 117  * i40iw_wr32 - write 32 bits to hw register
 118  * @hw: hardware information including registers
 119  * @reg: register offset
 120  * @value: vvalue to write to register
 121  */
 122 inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value)
 123 {
 124         writel(value, hw->hw_addr + reg);
 125 }
 126
 127 /**
 128  * i40iw_rd32 - read a 32 bit hw register
 129  * @hw: hardware information including registers
 130  * @reg: register offset
 131  *
 132  * Return value of register content
 133  */
 134 inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
 135 {
 136         return readl(hw->hw_addr + reg);
 137 }
 138
 139 /**
 140  * i40iw_inetaddr_event - system notifier for netdev events
 141  * @notfier: not used
 142  * @event: event for notifier
 143  * @ptr: if address
 144  */
 145 int i40iw_inetaddr_event(struct notifier_block *notifier,
 146                          unsigned long event,
 147                          void *ptr)
 148 {
 149         struct in_ifaddr *ifa = ptr;
 150         struct net_device *event_netdev = ifa->ifa_dev->dev;
 151         struct net_device *netdev;
 152         struct net_device *upper_dev;
 153         struct i40iw_device *iwdev;
 154         struct i40iw_handler *hdl;
 155         u32 local_ipaddr;
 156         u32 action = I40IW_ARP_ADD;
 157
 158         hdl = i40iw_find_netdev(event_netdev);
 159         if (!hdl)
 160                 return NOTIFY_DONE;
 161
 162         iwdev = &hdl->device;
 163         netdev = iwdev->ldev->netdev;
 164         upper_dev = netdev_master_upper_dev_get(netdev);
 165         if (netdev != event_netdev)
 166                 return NOTIFY_DONE;
 167
 168         if (upper_dev)
 169                 local_ipaddr = ntohl(
 170                         ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
 171         else
 172                 local_ipaddr = ntohl(ifa->ifa_address);
 173         switch (event) {
 174         case NETDEV_DOWN:
 175                 action = I40IW_ARP_DELETE;
 176                 /* Fall through */
 177         case NETDEV_UP:
 178                 /* Fall through */
 179         case NETDEV_CHANGEADDR:
 180                 i40iw_manage_arp_cache(iwdev,
 181                                        netdev->dev_addr,
 182                                        &local_ipaddr,
 183                                        true,
 184                                        action);
 185                 i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
 186                                 (action == I40IW_ARP_ADD) ? true : false);
 187                 break;
 188         default:
 189                 break;
 190         }
 191         return NOTIFY_DONE;
 192 }
 193
 194 /**
 195  * i40iw_inet6addr_event - system notifier for ipv6 netdev events
 196  * @notfier: not used
 197  * @event: event for notifier
 198  * @ptr: if address
 199  */
 200 int i40iw_inet6addr_event(struct notifier_block *notifier,
 201                           unsigned long event,
 202                           void *ptr)
 203 {
 204         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
 205         struct net_device *event_netdev = ifa->idev->dev;
 206         struct net_device *netdev;
 207         struct i40iw_device *iwdev;
 208         struct i40iw_handler *hdl;
 209         u32 local_ipaddr6[4];
 210         u32 action = I40IW_ARP_ADD;
 211
 212         hdl = i40iw_find_netdev(event_netdev);
 213         if (!hdl)
 214                 return NOTIFY_DONE;
 215
 216         iwdev = &hdl->device;
 217         netdev = iwdev->ldev->netdev;
 218         if (netdev != event_netdev)
 219                 return NOTIFY_DONE;
 220
 221         i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
 222         switch (event) {
 223         case NETDEV_DOWN:
 224                 action = I40IW_ARP_DELETE;
 225                 /* Fall through */
 226         case NETDEV_UP:
 227                 /* Fall through */
 228         case NETDEV_CHANGEADDR:
 229                 i40iw_manage_arp_cache(iwdev,
 230                                        netdev->dev_addr,
 231                                        local_ipaddr6,
 232                                        false,
 233                                        action);
 234                 i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
 235                                 (action == I40IW_ARP_ADD) ? true : false);
 236                 break;
 237         default:
 238                 break;
 239         }
 240         return NOTIFY_DONE;
 241 }
 242
 243 /**
 244  * i40iw_net_event - system notifier for net events
 245  * @notfier: not used
 246  * @event: event for notifier
 247  * @ptr: neighbor
 248  */
 249 int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
 250 {
 251         struct neighbour *neigh = ptr;
 252         struct i40iw_device *iwdev;
 253         struct i40iw_handler *iwhdl;
 254         __be32 *p;
 255         u32 local_ipaddr[4];
 256
 257         switch (event) {
 258         case NETEVENT_NEIGH_UPDATE:
 259                 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
 260                 if (!iwhdl)
 261                         return NOTIFY_DONE;
 262                 iwdev = &iwhdl->device;
 263                 p = (__be32 *)neigh->primary_key;
 264                 i40iw_copy_ip_ntohl(local_ipaddr, p);
 265                 if (neigh->nud_state & NUD_VALID) {
 266                         i40iw_manage_arp_cache(iwdev,
 267                                                neigh->ha,
 268                                                local_ipaddr,
 269                                                false,
 270                                                I40IW_ARP_ADD);
 271
 272                 } else {
 273                         i40iw_manage_arp_cache(iwdev,
 274                                                neigh->ha,
 275                                                local_ipaddr,
 276                                                false,
 277                                                I40IW_ARP_DELETE);
 278                 }
 279                 break;
 280         default:
 281                 break;
 282         }
 283         return NOTIFY_DONE;
 284 }
 285
 286 /**
 287  * i40iw_get_cqp_request - get cqp struct
 288  * @cqp: device cqp ptr
 289  * @wait: cqp to be used in wait mode
 290  */
 291 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
 292 {
 293         struct i40iw_cqp_request *cqp_request = NULL;
 294         unsigned long flags;
 295
 296         spin_lock_irqsave(&cqp->req_lock, flags);
 297         if (!list_empty(&cqp->cqp_avail_reqs)) {
 298                 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
 299                                          struct i40iw_cqp_request, list);
 300                 list_del_init(&cqp_request->list);
 301         }
 302         spin_unlock_irqrestore(&cqp->req_lock, flags);
 303         if (!cqp_request) {
 304                 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
 305                 if (cqp_request) {
 306                         cqp_request->dynamic = true;
 307                         INIT_LIST_HEAD(&cqp_request->list);
 308                         init_waitqueue_head(&cqp_request->waitq);
 309                 }
 310         }
 311         if (!cqp_request) {
 312                 i40iw_pr_err("CQP Request Fail: No Memory");
 313                 return NULL;
 314         }
 315
 316         if (wait) {
 317                 atomic_set(&cqp_request->refcount, 2);
 318                 cqp_request->waiting = true;
 319         } else {
 320                 atomic_set(&cqp_request->refcount, 1);
 321         }
 322         return cqp_request;
 323 }
 324
 325 /**
 326  * i40iw_free_cqp_request - free cqp request
 327  * @cqp: cqp ptr
 328  * @cqp_request: to be put back in cqp list
 329  */
 330 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
 331 {
 332         unsigned long flags;
 333
 334         if (cqp_request->dynamic) {
 335                 kfree(cqp_request);
 336         } else {
 337                 cqp_request->request_done = false;
 338                 cqp_request->callback_fcn = NULL;
 339                 cqp_request->waiting = false;
 340
 341                 spin_lock_irqsave(&cqp->req_lock, flags);
 342                 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
 343                 spin_unlock_irqrestore(&cqp->req_lock, flags);
 344         }
 345 }
 346
 347 /**
 348  * i40iw_put_cqp_request - dec ref count and free if 0
 349  * @cqp: cqp ptr
 350  * @cqp_request: to be put back in cqp list
 351  */
 352 void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
 353                            struct i40iw_cqp_request *cqp_request)
 354 {
 355         if (atomic_dec_and_test(&cqp_request->refcount))
 356                 i40iw_free_cqp_request(cqp, cqp_request);
 357 }
 358
 359 /**
 360  * i40iw_free_qp - callback after destroy cqp completes
 361  * @cqp_request: cqp request for destroy qp
 362  * @num: not used
 363  */
 364 static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
 365 {
 366         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
 367         struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
 368         struct i40iw_device *iwdev;
 369         u32 qp_num = iwqp->ibqp.qp_num;
 370
 371         iwdev = iwqp->iwdev;
 372
 373         i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
 374         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 375         i40iw_rem_devusecount(iwdev);
 376 }
 377
 378 /**
 379  * i40iw_wait_event - wait for completion
 380  * @iwdev: iwarp device
 381  * @cqp_request: cqp request to wait
 382  */
 383 static int i40iw_wait_event(struct i40iw_device *iwdev,
 384                             struct i40iw_cqp_request *cqp_request)
 385 {
 386         struct cqp_commands_info *info = &cqp_request->info;
 387         struct i40iw_cqp *iwcqp = &iwdev->cqp;
 388         bool cqp_error = false;
 389         int err_code = 0;
 390         int timeout_ret = 0;
 391
 392         timeout_ret = wait_event_timeout(cqp_request->waitq,
 393                                          cqp_request->request_done,
 394                                          I40IW_EVENT_TIMEOUT);
 395         if (!timeout_ret) {
 396                 i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n",
 397                              info->cqp_cmd, timeout_ret);
 398                 err_code = -ETIME;
 399                 if (!iwdev->reset) {
 400                         iwdev->reset = true;
 401                         i40iw_request_reset(iwdev);
 402                 }
 403                 goto done;
 404         }
 405         cqp_error = cqp_request->compl_info.error;
 406         if (cqp_error) {
 407                 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
 408                              info->cqp_cmd, cqp_request->compl_info.maj_err_code,
 409                              cqp_request->compl_info.min_err_code);
 410                 err_code = -EPROTO;
 411                 goto done;
 412         }
 413 done:
 414         i40iw_put_cqp_request(iwcqp, cqp_request);
 415         return err_code;
 416 }
 417
 418 /**
 419  * i40iw_handle_cqp_op - process cqp command
 420  * @iwdev: iwarp device
 421  * @cqp_request: cqp request to process
 422  */
 423 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
 424                                            struct i40iw_cqp_request
 425                                            *cqp_request)
 426 {
 427         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 428         enum i40iw_status_code status;
 429         struct cqp_commands_info *info = &cqp_request->info;
 430         int err_code = 0;
 431
 432         if (iwdev->reset) {
 433                 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
 434                 return I40IW_ERR_CQP_COMPL_ERROR;
 435         }
 436
 437         status = i40iw_process_cqp_cmd(dev, info);
 438         if (status) {
 439                 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
 440                 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
 441                 return status;
 442         }
 443         if (cqp_request->waiting)
 444                 err_code = i40iw_wait_event(iwdev, cqp_request);
 445         if (err_code)
 446                 status = I40IW_ERR_CQP_COMPL_ERROR;
 447         return status;
 448 }
 449
 450 /**
 451  * i40iw_add_devusecount - add dev refcount
 452  * @iwdev: dev for refcount
 453  */
 454 void i40iw_add_devusecount(struct i40iw_device *iwdev)
 455 {
 456         atomic64_inc(&iwdev->use_count);
 457 }
 458
 459 /**
 460  * i40iw_rem_devusecount - decrement refcount for dev
 461  * @iwdev: device
 462  */
 463 void i40iw_rem_devusecount(struct i40iw_device *iwdev)
 464 {
 465         if (!atomic64_dec_and_test(&iwdev->use_count))
 466                 return;
 467         wake_up(&iwdev->close_wq);
 468 }
 469
 470 /**
 471  * i40iw_add_pdusecount - add pd refcount
 472  * @iwpd: pd for refcount
 473  */
 474 void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
 475 {
 476         atomic_inc(&iwpd->usecount);
 477 }
 478
 479 /**
 480  * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
 481  * @iwpd: pd for refcount
 482  * @iwdev: iwarp device
 483  */
 484 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
 485 {
 486         if (!atomic_dec_and_test(&iwpd->usecount))
 487                 return;
 488         i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
 489         kfree(iwpd);
 490 }
 491
 492 /**
 493  * i40iw_add_ref - add refcount for qp
 494  * @ibqp: iqarp qp
 495  */
 496 void i40iw_add_ref(struct ib_qp *ibqp)
 497 {
 498         struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
 499
 500         atomic_inc(&iwqp->refcount);
 501 }
 502
 503 /**
 504  * i40iw_rem_ref - rem refcount for qp and free if 0
 505  * @ibqp: iqarp qp
 506  */
 507 void i40iw_rem_ref(struct ib_qp *ibqp)
 508 {
 509         struct i40iw_qp *iwqp;
 510         enum i40iw_status_code status;
 511         struct i40iw_cqp_request *cqp_request;
 512         struct cqp_commands_info *cqp_info;
 513         struct i40iw_device *iwdev;
 514         u32 qp_num;
 515         unsigned long flags;
 516
 517         iwqp = to_iwqp(ibqp);
 518         iwdev = iwqp->iwdev;
 519         spin_lock_irqsave(&iwdev->qptable_lock, flags);
 520         if (!atomic_dec_and_test(&iwqp->refcount)) {
 521                 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
 522                 return;
 523         }
 524
 525         qp_num = iwqp->ibqp.qp_num;
 526         iwdev->qp_table[qp_num] = NULL;
 527         spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
 528         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 529         if (!cqp_request)
 530                 return;
 531
 532         cqp_request->callback_fcn = i40iw_free_qp;
 533         cqp_request->param = (void *)&iwqp->sc_qp;
 534         cqp_info = &cqp_request->info;
 535         cqp_info->cqp_cmd = OP_QP_DESTROY;
 536         cqp_info->post_sq = 1;
 537         cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
 538         cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
 539         cqp_info->in.u.qp_destroy.remove_hash_idx = true;
 540         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 541         if (status)
 542                 i40iw_pr_err("CQP-OP Destroy QP fail");
 543 }
 544
 545 /**
 546  * i40iw_get_qp - get qp address
 547  * @device: iwarp device
 548  * @qpn: qp number
 549  */
 550 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
 551 {
 552         struct i40iw_device *iwdev = to_iwdev(device);
 553
 554         if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
 555                 return NULL;
 556
 557         return &iwdev->qp_table[qpn]->ibqp;
 558 }
 559
 560 /**
 561  * i40iw_debug_buf - print debug msg and buffer is mask set
 562  * @dev: hardware control device structure
 563  * @mask: mask to compare if to print debug buffer
 564  * @buf: points buffer addr
 565  * @size: saize of buffer to print
 566  */
 567 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
 568                      enum i40iw_debug_flag mask,
 569                      char *desc,
 570                      u64 *buf,
 571                      u32 size)
 572 {
 573         u32 i;
 574
 575         if (!(dev->debug_mask & mask))
 576                 return;
 577         i40iw_debug(dev, mask, "%s\n", desc);
 578         i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
 579                     (unsigned long long)virt_to_phys(buf));
 580
 581         for (i = 0; i < size; i += 8)
 582                 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
 583 }
 584
 585 /**
 586  * i40iw_get_hw_addr - return hw addr
 587  * @par: points to shared dev
 588  */
 589 u8 __iomem *i40iw_get_hw_addr(void *par)
 590 {
 591         struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
 592
 593         return dev->hw->hw_addr;
 594 }
 595
 596 /**
 597  * i40iw_remove_head - return head entry and remove from list
 598  * @list: list for entry
 599  */
 600 void *i40iw_remove_head(struct list_head *list)
 601 {
 602         struct list_head *entry;
 603
 604         if (list_empty(list))
 605                 return NULL;
 606
 607         entry = (void *)list->next;
 608         list_del(entry);
 609         return (void *)entry;
 610 }
 611
 612 /**
 613  * i40iw_allocate_dma_mem - Memory alloc helper fn
 614  * @hw:   pointer to the HW structure
 615  * @mem:  ptr to mem struct to fill out
 616  * @size: size of memory requested
 617  * @alignment: what to align the allocation to
 618  */
 619 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
 620                                               struct i40iw_dma_mem *mem,
 621                                               u64 size,
 622                                               u32 alignment)
 623 {
 624         struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
 625
 626         if (!mem)
 627                 return I40IW_ERR_PARAM;
 628         mem->size = ALIGN(size, alignment);
 629         mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
 630                                       (dma_addr_t *)&mem->pa, GFP_KERNEL);
 631         if (!mem->va)
 632                 return I40IW_ERR_NO_MEMORY;
 633         return 0;
 634 }
 635
 636 /**
 637  * i40iw_free_dma_mem - Memory free helper fn
 638  * @hw:   pointer to the HW structure
 639  * @mem:  ptr to mem struct to free
 640  */
 641 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
 642 {
 643         struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
 644
 645         if (!mem || !mem->va)
 646                 return;
 647
 648         dma_free_coherent(&pcidev->dev, mem->size,
 649                           mem->va, (dma_addr_t)mem->pa);
 650         mem->va = NULL;
 651 }
 652
 653 /**
 654  * i40iw_allocate_virt_mem - virtual memory alloc helper fn
 655  * @hw:   pointer to the HW structure
 656  * @mem:  ptr to mem struct to fill out
 657  * @size: size of memory requested
 658  */
 659 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
 660                                                struct i40iw_virt_mem *mem,
 661                                                u32 size)
 662 {
 663         if (!mem)
 664                 return I40IW_ERR_PARAM;
 665
 666         mem->size = size;
 667         mem->va = kzalloc(size, GFP_KERNEL);
 668
 669         if (mem->va)
 670                 return 0;
 671         else
 672                 return I40IW_ERR_NO_MEMORY;
 673 }
 674
 675 /**
 676  * i40iw_free_virt_mem - virtual memory free helper fn
 677  * @hw:   pointer to the HW structure
 678  * @mem:  ptr to mem struct to free
 679  */
 680 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
 681                                            struct i40iw_virt_mem *mem)
 682 {
 683         if (!mem)
 684                 return I40IW_ERR_PARAM;
 685         /*
 686          * mem->va points to the parent of mem, so both mem and mem->va
 687          * can not be touched once mem->va is freed
 688          */
 689         kfree(mem->va);
 690         return 0;
 691 }
 692
 693 /**
 694  * i40iw_cqp_sds_cmd - create cqp command for sd
 695  * @dev: hardware control device structure
 696  * @sd_info: information  for sd cqp
 697  *
 698  */
 699 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
 700                                          struct i40iw_update_sds_info *sdinfo)
 701 {
 702         enum i40iw_status_code status;
 703         struct i40iw_cqp_request *cqp_request;
 704         struct cqp_commands_info *cqp_info;
 705         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 706
 707         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 708         if (!cqp_request)
 709                 return I40IW_ERR_NO_MEMORY;
 710         cqp_info = &cqp_request->info;
 711         memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
 712                sizeof(cqp_info->in.u.update_pe_sds.info));
 713         cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
 714         cqp_info->post_sq = 1;
 715         cqp_info->in.u.update_pe_sds.dev = dev;
 716         cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
 717         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 718         if (status)
 719                 i40iw_pr_err("CQP-OP Update SD's fail");
 720         return status;
 721 }
 722
 723 /**
 724  * i40iw_qp_suspend_resume - cqp command for suspend/resume
 725  * @dev: hardware control device structure
 726  * @qp: hardware control qp
 727  * @suspend: flag if suspend or resume
 728  */
 729 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
 730 {
 731         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 732         struct i40iw_cqp_request *cqp_request;
 733         struct i40iw_sc_cqp *cqp = dev->cqp;
 734         struct cqp_commands_info *cqp_info;
 735         enum i40iw_status_code status;
 736
 737         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 738         if (!cqp_request)
 739                 return;
 740
 741         cqp_info = &cqp_request->info;
 742         cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
 743         cqp_info->in.u.suspend_resume.cqp = cqp;
 744         cqp_info->in.u.suspend_resume.qp = qp;
 745         cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
 746         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 747         if (status)
 748                 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
 749 }
 750
 751 /**
 752  * i40iw_qp_mss_modify - modify mss for qp
 753  * @dev: hardware control device structure
 754  * @qp: hardware control qp
 755  */
 756 void i40iw_qp_mss_modify(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
 757 {
 758         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 759         struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
 760         struct i40iw_modify_qp_info info;
 761
 762         memset(&info, 0, sizeof(info));
 763         info.mss_change = true;
 764         info.new_mss = qp->vsi->mss;
 765         i40iw_hw_modify_qp(iwdev, iwqp, &info, false);
 766 }
 767
 768 /**
 769  * i40iw_term_modify_qp - modify qp for term message
 770  * @qp: hardware control qp
 771  * @next_state: qp's next state
 772  * @term: terminate code
 773  * @term_len: length
 774  */
 775 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
 776 {
 777         struct i40iw_qp *iwqp;
 778
 779         iwqp = (struct i40iw_qp *)qp->back_qp;
 780         i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
 781 };
 782
 783 /**
 784  * i40iw_terminate_done - after terminate is completed
 785  * @qp: hardware control qp
 786  * @timeout_occurred: indicates if terminate timer expired
 787  */
 788 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
 789 {
 790         struct i40iw_qp *iwqp;
 791         u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
 792         u8 hte = 0;
 793         bool first_time;
 794         unsigned long flags;
 795
 796         iwqp = (struct i40iw_qp *)qp->back_qp;
 797         spin_lock_irqsave(&iwqp->lock, flags);
 798         if (iwqp->hte_added) {
 799                 iwqp->hte_added = 0;
 800                 hte = 1;
 801         }
 802         first_time = !(qp->term_flags & I40IW_TERM_DONE);
 803         qp->term_flags |= I40IW_TERM_DONE;
 804         spin_unlock_irqrestore(&iwqp->lock, flags);
 805         if (first_time) {
 806                 if (!timeout_occurred)
 807                         i40iw_terminate_del_timer(qp);
 808                 else
 809                         next_iwarp_state = I40IW_QP_STATE_CLOSING;
 810
 811                 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
 812                 i40iw_cm_disconn(iwqp);
 813         }
 814 }
 815
 816 /**
 817  * i40iw_terminate_imeout - timeout happened
 818  * @context: points to iwarp qp
 819  */
 820 static void i40iw_terminate_timeout(unsigned long context)
 821 {
 822         struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
 823         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
 824
 825         i40iw_terminate_done(qp, 1);
 826         i40iw_rem_ref(&iwqp->ibqp);
 827 }
 828
 829 /**
 830  * i40iw_terminate_start_timer - start terminate timeout
 831  * @qp: hardware control qp
 832  */
 833 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
 834 {
 835         struct i40iw_qp *iwqp;
 836
 837         iwqp = (struct i40iw_qp *)qp->back_qp;
 838         i40iw_add_ref(&iwqp->ibqp);
 839         init_timer(&iwqp->terminate_timer);
 840         iwqp->terminate_timer.function = i40iw_terminate_timeout;
 841         iwqp->terminate_timer.expires = jiffies + HZ;
 842         iwqp->terminate_timer.data = (unsigned long)iwqp;
 843         add_timer(&iwqp->terminate_timer);
 844 }
 845
 846 /**
 847  * i40iw_terminate_del_timer - delete terminate timeout
 848  * @qp: hardware control qp
 849  */
 850 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
 851 {
 852         struct i40iw_qp *iwqp;
 853
 854         iwqp = (struct i40iw_qp *)qp->back_qp;
 855         if (del_timer(&iwqp->terminate_timer))
 856                 i40iw_rem_ref(&iwqp->ibqp);
 857 }
 858
 859 /**
 860  * i40iw_cqp_generic_worker - generic worker for cqp
 861  * @work: work pointer
 862  */
 863 static void i40iw_cqp_generic_worker(struct work_struct *work)
 864 {
 865         struct i40iw_virtchnl_work_info *work_info =
 866             &((struct virtchnl_work *)work)->work_info;
 867
 868         if (work_info->worker_vf_dev)
 869                 work_info->callback_fcn(work_info->worker_vf_dev);
 870 }
 871
 872 /**
 873  * i40iw_cqp_spawn_worker - spawn worket thread
 874  * @iwdev: device struct pointer
 875  * @work_info: work request info
 876  * @iw_vf_idx: virtual function index
 877  */
 878 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
 879                             struct i40iw_virtchnl_work_info *work_info,
 880                             u32 iw_vf_idx)
 881 {
 882         struct virtchnl_work *work;
 883         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 884
 885         work = &iwdev->virtchnl_w[iw_vf_idx];
 886         memcpy(&work->work_info, work_info, sizeof(*work_info));
 887         INIT_WORK(&work->work, i40iw_cqp_generic_worker);
 888         queue_work(iwdev->virtchnl_wq, &work->work);
 889 }
 890
 891 /**
 892  * i40iw_cqp_manage_hmc_fcn_worker -
 893  * @work: work pointer for hmc info
 894  */
 895 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
 896 {
 897         struct i40iw_cqp_request *cqp_request =
 898             ((struct virtchnl_work *)work)->cqp_request;
 899         struct i40iw_ccq_cqe_info ccq_cqe_info;
 900         struct i40iw_hmc_fcn_info *hmcfcninfo =
 901                         &cqp_request->info.in.u.manage_hmc_pm.info;
 902         struct i40iw_device *iwdev =
 903             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
 904
 905         ccq_cqe_info.cqp = NULL;
 906         ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
 907         ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
 908         ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
 909         ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
 910         ccq_cqe_info.scratch = 0;
 911         ccq_cqe_info.error = cqp_request->compl_info.error;
 912         hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
 913                                  hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
 914         i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
 915 }
 916
 917 /**
 918  * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
 919  * @cqp_request: cqp request info struct for hmc fun
 920  * @unused: unused param of callback
 921  */
 922 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
 923                                               u32 unused)
 924 {
 925         struct virtchnl_work *work;
 926         struct i40iw_hmc_fcn_info *hmcfcninfo =
 927             &cqp_request->info.in.u.manage_hmc_pm.info;
 928         struct i40iw_device *iwdev =
 929             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
 930             back_dev;
 931
 932         if (hmcfcninfo && hmcfcninfo->callback_fcn) {
 933                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
 934                 atomic_inc(&cqp_request->refcount);
 935                 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
 936                 work->cqp_request = cqp_request;
 937                 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
 938                 queue_work(iwdev->virtchnl_wq, &work->work);
 939                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
 940         } else {
 941                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
 942         }
 943 }
 944
 945 /**
 946  * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
 947  * @dev: hardware control device structure
 948  * @hmcfcninfo: info for hmc
 949  */
 950 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
 951                                                     struct i40iw_hmc_fcn_info *hmcfcninfo)
 952 {
 953         enum i40iw_status_code status;
 954         struct i40iw_cqp_request *cqp_request;
 955         struct cqp_commands_info *cqp_info;
 956         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 957
 958         i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
 959         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 960         if (!cqp_request)
 961                 return I40IW_ERR_NO_MEMORY;
 962         cqp_info = &cqp_request->info;
 963         cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
 964         cqp_request->param = hmcfcninfo;
 965         memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
 966                sizeof(*hmcfcninfo));
 967         cqp_info->in.u.manage_hmc_pm.dev = dev;
 968         cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
 969         cqp_info->post_sq = 1;
 970         cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
 971         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 972         if (status)
 973                 i40iw_pr_err("CQP-OP Manage HMC fail");
 974         return status;
 975 }
 976
 977 /**
 978  * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
 979  * @iwdev: function device struct
 980  * @values_mem: buffer for fpm
 981  * @hmc_fn_id: function id for fpm
 982  */
 983 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
 984                                                       struct i40iw_dma_mem *values_mem,
 985                                                       u8 hmc_fn_id)
 986 {
 987         enum i40iw_status_code status;
 988         struct i40iw_cqp_request *cqp_request;
 989         struct cqp_commands_info *cqp_info;
 990         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 991
 992         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 993         if (!cqp_request)
 994                 return I40IW_ERR_NO_MEMORY;
 995         cqp_info = &cqp_request->info;
 996         cqp_request->param = NULL;
 997         cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
 998         cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
 999         cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
1000         cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
1001         cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
1002         cqp_info->post_sq = 1;
1003         cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
1004         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1005         if (status)
1006                 i40iw_pr_err("CQP-OP Query FPM fail");
1007         return status;
1008 }
1009
1010 /**
1011  * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
1012  * @dev: hardware control device structure
1013  * @values_mem: buffer with fpm values
1014  * @hmc_fn_id: function id for fpm
1015  */
1016 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1017                                                        struct i40iw_dma_mem *values_mem,
1018                                                        u8 hmc_fn_id)
1019 {
1020         enum i40iw_status_code status;
1021         struct i40iw_cqp_request *cqp_request;
1022         struct cqp_commands_info *cqp_info;
1023         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1024
1025         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1026         if (!cqp_request)
1027                 return I40IW_ERR_NO_MEMORY;
1028         cqp_info = &cqp_request->info;
1029         cqp_request->param = NULL;
1030         cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
1031         cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
1032         cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
1033         cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
1034         cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
1035         cqp_info->post_sq = 1;
1036         cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
1037         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1038         if (status)
1039                 i40iw_pr_err("CQP-OP Commit FPM fail");
1040         return status;
1041 }
1042
1043 /**
1044  * i40iw_vf_wait_vchnl_resp - wait for channel msg
1045  * @iwdev: function's device struct
1046  */
1047 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1048 {
1049         struct i40iw_device *iwdev = dev->back_dev;
1050         int timeout_ret;
1051
1052         i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1053                     __func__, __LINE__, dev, iwdev);
1054
1055         atomic_set(&iwdev->vchnl_msgs, 2);
1056         timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1057                                          (atomic_read(&iwdev->vchnl_msgs) == 1),
1058                                          I40IW_VCHNL_EVENT_TIMEOUT);
1059         atomic_dec(&iwdev->vchnl_msgs);
1060         if (!timeout_ret) {
1061                 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1062                 atomic_set(&iwdev->vchnl_msgs, 0);
1063                 dev->vchnl_up = false;
1064                 return I40IW_ERR_TIMEOUT;
1065         }
1066         wake_up(&dev->vf_reqs);
1067         return 0;
1068 }
1069
1070 /**
1071  * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1072  * @dev: device pointer
1073  * @cq: pointer to created cq
1074  */
1075 enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1076                                                struct i40iw_sc_cq *cq)
1077 {
1078         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1079         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1080         struct i40iw_cqp_request *cqp_request;
1081         struct cqp_commands_info *cqp_info;
1082         enum i40iw_status_code status;
1083
1084         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1085         if (!cqp_request)
1086                 return I40IW_ERR_NO_MEMORY;
1087
1088         cqp_info = &cqp_request->info;
1089         cqp_info->cqp_cmd = OP_CQ_CREATE;
1090         cqp_info->post_sq = 1;
1091         cqp_info->in.u.cq_create.cq = cq;
1092         cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1093         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1094         if (status)
1095                 i40iw_pr_err("CQP-OP Create QP fail");
1096
1097         return status;
1098 }
1099
1100 /**
1101  * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1102  * @dev: device pointer
1103  * @qp: pointer to created qp
1104  */
1105 enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1106                                                struct i40iw_sc_qp *qp)
1107 {
1108         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1109         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1110         struct i40iw_cqp_request *cqp_request;
1111         struct cqp_commands_info *cqp_info;
1112         struct i40iw_create_qp_info *qp_info;
1113         enum i40iw_status_code status;
1114
1115         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1116         if (!cqp_request)
1117                 return I40IW_ERR_NO_MEMORY;
1118
1119         cqp_info = &cqp_request->info;
1120         qp_info = &cqp_request->info.in.u.qp_create.info;
1121
1122         memset(qp_info, 0, sizeof(*qp_info));
1123
1124         qp_info->cq_num_valid = true;
1125         qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
1126
1127         cqp_info->cqp_cmd = OP_QP_CREATE;
1128         cqp_info->post_sq = 1;
1129         cqp_info->in.u.qp_create.qp = qp;
1130         cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1131         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1132         if (status)
1133                 i40iw_pr_err("CQP-OP QP create fail");
1134         return status;
1135 }
1136
1137 /**
1138  * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1139  * @dev: device pointer
1140  * @cq: pointer to cq
1141  */
1142 void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1143 {
1144         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1145
1146         i40iw_cq_wq_destroy(iwdev, cq);
1147 }
1148
1149 /**
1150  * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1151  * @dev: device pointer
1152  * @qp: pointer to qp
1153  */
1154 void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1155 {
1156         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1157         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1158         struct i40iw_cqp_request *cqp_request;
1159         struct cqp_commands_info *cqp_info;
1160         enum i40iw_status_code status;
1161
1162         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1163         if (!cqp_request)
1164                 return;
1165
1166         cqp_info = &cqp_request->info;
1167         memset(cqp_info, 0, sizeof(*cqp_info));
1168
1169         cqp_info->cqp_cmd = OP_QP_DESTROY;
1170         cqp_info->post_sq = 1;
1171         cqp_info->in.u.qp_destroy.qp = qp;
1172         cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1173         cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1174         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1175         if (status)
1176                 i40iw_pr_err("CQP QP_DESTROY fail");
1177 }
1178
1179
1180 /**
1181  * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1182  * @dev: hardware control device structure
1183  * @qp: hardware control qp
1184  */
1185 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1186 {
1187         struct i40iw_qp_flush_info info;
1188         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1189
1190         i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1191         memset(&info, 0, sizeof(info));
1192         info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1193         info.generate_ae = true;
1194         info.ae_source = 0x3;
1195         (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1196 }
1197
1198 /**
1199  * i40iw_init_hash_desc - initialize hash for crc calculation
1200  * @desc: cryption type
1201  */
1202 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1203 {
1204         struct crypto_shash *tfm;
1205         struct shash_desc *tdesc;
1206
1207         tfm = crypto_alloc_shash("crc32c", 0, 0);
1208         if (IS_ERR(tfm))
1209                 return I40IW_ERR_MPA_CRC;
1210
1211         tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1212                         GFP_KERNEL);
1213         if (!tdesc) {
1214                 crypto_free_shash(tfm);
1215                 return I40IW_ERR_MPA_CRC;
1216         }
1217         tdesc->tfm = tfm;
1218         *desc = tdesc;
1219
1220         return 0;
1221 }
1222
1223 /**
1224  * i40iw_free_hash_desc - free hash desc
1225  * @desc: to be freed
1226  */
1227 void i40iw_free_hash_desc(struct shash_desc *desc)
1228 {
1229         if (desc) {
1230                 crypto_free_shash(desc->tfm);
1231                 kfree(desc);
1232         }
1233 }
1234
1235 /**
1236  * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1237  * @dev: hardware control device structure
1238  * @mem: buffer ptr for fpm to be allocated
1239  * @return: memory allocation status
1240  */
1241 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1242                                                  struct i40iw_dma_mem *mem)
1243 {
1244         enum i40iw_status_code status;
1245         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1246
1247         status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1248                                        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1249         return status;
1250 }
1251
1252 /**
1253  * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1254  * @desc: desc for hash
1255  * @addr: address of buffer for crc
1256  * @length: length of buffer
1257  * @value: value to be compared
1258  */
1259 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1260                                               void *addr,
1261                                               u32 length,
1262                                               u32 value)
1263 {
1264         u32 crc = 0;
1265         int ret;
1266         enum i40iw_status_code ret_code = 0;
1267
1268         crypto_shash_init(desc);
1269         ret = crypto_shash_update(desc, addr, length);
1270         if (!ret)
1271                 crypto_shash_final(desc, (u8 *)&crc);
1272         if (crc != value) {
1273                 i40iw_pr_err("mpa crc check fail\n");
1274                 ret_code = I40IW_ERR_MPA_CRC;
1275         }
1276         return ret_code;
1277 }
1278
1279 /**
1280  * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1281  * @dev: hardware control device structure
1282  * @buf: receive puda buffer on exception q
1283  */
1284 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1285                                      struct i40iw_puda_buf *buf)
1286 {
1287         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1288         struct i40iw_qp *iwqp;
1289         struct i40iw_cm_node *cm_node;
1290         u32 loc_addr[4], rem_addr[4];
1291         u16 loc_port, rem_port;
1292         struct ipv6hdr *ip6h;
1293         struct iphdr *iph = (struct iphdr *)buf->iph;
1294         struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1295
1296         if (iph->version == 4) {
1297                 memset(loc_addr, 0, sizeof(loc_addr));
1298                 loc_addr[0] = ntohl(iph->daddr);
1299                 memset(rem_addr, 0, sizeof(rem_addr));
1300                 rem_addr[0] = ntohl(iph->saddr);
1301         } else {
1302                 ip6h = (struct ipv6hdr *)buf->iph;
1303                 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1304                 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1305         }
1306         loc_port = ntohs(tcph->dest);
1307         rem_port = ntohs(tcph->source);
1308
1309         cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1310                                   loc_addr, false);
1311         if (!cm_node)
1312                 return NULL;
1313         iwqp = cm_node->iwqp;
1314         return &iwqp->sc_qp;
1315 }
1316
1317 /**
1318  * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1319  * @buf: puda to update
1320  * @length: length of buffer
1321  * @seqnum: seq number for tcp
1322  */
1323 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1324 {
1325         struct tcphdr *tcph;
1326         struct iphdr *iph;
1327         u16 iphlen;
1328         u16 packetsize;
1329         u8 *addr = (u8 *)buf->mem.va;
1330
1331         iphlen = (buf->ipv4) ? 20 : 40;
1332         iph = (struct iphdr *)(addr + buf->maclen);
1333         tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1334         packetsize = length + buf->tcphlen + iphlen;
1335
1336         iph->tot_len = htons(packetsize);
1337         tcph->seq = htonl(seqnum);
1338 }
1339
1340 /**
1341  * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1342  * @info: to get information
1343  * @buf: puda buffer
1344  */
1345 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1346                                                  struct i40iw_puda_buf *buf)
1347 {
1348         struct iphdr *iph;
1349         struct ipv6hdr *ip6h;
1350         struct tcphdr *tcph;
1351         u16 iphlen;
1352         u16 pkt_len;
1353         u8 *mem = (u8 *)buf->mem.va;
1354         struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1355
1356         if (ethh->h_proto == htons(0x8100)) {
1357                 info->vlan_valid = true;
1358                 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1359         }
1360         buf->maclen = (info->vlan_valid) ? 18 : 14;
1361         iphlen = (info->l3proto) ? 40 : 20;
1362         buf->ipv4 = (info->l3proto) ? false : true;
1363         buf->iph = mem + buf->maclen;
1364         iph = (struct iphdr *)buf->iph;
1365
1366         buf->tcph = buf->iph + iphlen;
1367         tcph = (struct tcphdr *)buf->tcph;
1368
1369         if (buf->ipv4) {
1370                 pkt_len = ntohs(iph->tot_len);
1371         } else {
1372                 ip6h = (struct ipv6hdr *)buf->iph;
1373                 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1374         }
1375
1376         buf->totallen = pkt_len + buf->maclen;
1377
1378         if (info->payload_len < buf->totallen) {
1379                 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1380                              info->payload_len, buf->totallen);
1381                 return I40IW_ERR_INVALID_SIZE;
1382         }
1383
1384         buf->tcphlen = (tcph->doff) << 2;
1385         buf->datalen = pkt_len - iphlen - buf->tcphlen;
1386         buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1387         buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1388         buf->seqnum = ntohl(tcph->seq);
1389         return 0;
1390 }
1391
1392 /**
1393  * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1394  * @vsi: pointer to the vsi structure
1395  */
1396 static void i40iw_hw_stats_timeout(unsigned long vsi)
1397 {
1398         struct i40iw_sc_vsi *sc_vsi =  (struct i40iw_sc_vsi *)vsi;
1399         struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
1400         struct i40iw_vsi_pestat *pf_devstat = sc_vsi->pestat;
1401         struct i40iw_vsi_pestat *vf_devstat = NULL;
1402         u16 iw_vf_idx;
1403         unsigned long flags;
1404
1405         /*PF*/
1406         i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
1407
1408         for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1409                 spin_lock_irqsave(&pf_devstat->lock, flags);
1410                 if (pf_dev->vf_dev[iw_vf_idx]) {
1411                         if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1412                                 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
1413                                 i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
1414                         }
1415                 }
1416                 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1417         }
1418
1419         mod_timer(&pf_devstat->stats_timer,
1420                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1421 }
1422
1423 /**
1424  * i40iw_hw_stats_start_timer - Start periodic stats timer
1425  * @vsi: pointer to the vsi structure
1426  */
1427 void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1428 {
1429         struct i40iw_vsi_pestat *devstat = vsi->pestat;
1430
1431         init_timer(&devstat->stats_timer);
1432         devstat->stats_timer.function = i40iw_hw_stats_timeout;
1433         devstat->stats_timer.data = (unsigned long)vsi;
1434         mod_timer(&devstat->stats_timer,
1435                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1436 }
1437
1438 /**
1439  * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1440  * @vsi: pointer to the vsi structure
1441  */
1442 void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1443 {
1444         struct i40iw_vsi_pestat *devstat = vsi->pestat;
1445
1446         del_timer_sync(&devstat->stats_timer);
1447 }