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
 157         hdl = i40iw_find_netdev(event_netdev);
 158         if (!hdl)
 159                 return NOTIFY_DONE;
 160
 161         iwdev = &hdl->device;
 162         netdev = iwdev->ldev->netdev;
 163         upper_dev = netdev_master_upper_dev_get(netdev);
 164         if (netdev != event_netdev)
 165                 return NOTIFY_DONE;
 166
 167         switch (event) {
 168         case NETDEV_DOWN:
 169                 if (upper_dev)
 170                         local_ipaddr = ntohl(
 171                                 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
 172                 else
 173                         local_ipaddr = ntohl(ifa->ifa_address);
 174                 i40iw_manage_arp_cache(iwdev,
 175                                        netdev->dev_addr,
 176                                        &local_ipaddr,
 177                                        true,
 178                                        I40IW_ARP_DELETE);
 179                 return NOTIFY_OK;
 180         case NETDEV_UP:
 181                 if (upper_dev)
 182                         local_ipaddr = ntohl(
 183                                 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
 184                 else
 185                         local_ipaddr = ntohl(ifa->ifa_address);
 186                 i40iw_manage_arp_cache(iwdev,
 187                                        netdev->dev_addr,
 188                                        &local_ipaddr,
 189                                        true,
 190                                        I40IW_ARP_ADD);
 191                 break;
 192         case NETDEV_CHANGEADDR:
 193                 /* Add the address to the IP table */
 194                 if (upper_dev)
 195                         local_ipaddr = ntohl(
 196                                 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
 197                 else
 198                         local_ipaddr = ntohl(ifa->ifa_address);
 199
 200                 i40iw_manage_arp_cache(iwdev,
 201                                        netdev->dev_addr,
 202                                        &local_ipaddr,
 203                                        true,
 204                                        I40IW_ARP_ADD);
 205                 break;
 206         default:
 207                 break;
 208         }
 209         return NOTIFY_DONE;
 210 }
 211
 212 /**
 213  * i40iw_inet6addr_event - system notifier for ipv6 netdev events
 214  * @notfier: not used
 215  * @event: event for notifier
 216  * @ptr: if address
 217  */
 218 int i40iw_inet6addr_event(struct notifier_block *notifier,
 219                           unsigned long event,
 220                           void *ptr)
 221 {
 222         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
 223         struct net_device *event_netdev = ifa->idev->dev;
 224         struct net_device *netdev;
 225         struct i40iw_device *iwdev;
 226         struct i40iw_handler *hdl;
 227         u32 local_ipaddr6[4];
 228
 229         hdl = i40iw_find_netdev(event_netdev);
 230         if (!hdl)
 231                 return NOTIFY_DONE;
 232
 233         iwdev = &hdl->device;
 234         netdev = iwdev->ldev->netdev;
 235         if (netdev != event_netdev)
 236                 return NOTIFY_DONE;
 237
 238         switch (event) {
 239         case NETDEV_DOWN:
 240                 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
 241                 i40iw_manage_arp_cache(iwdev,
 242                                        netdev->dev_addr,
 243                                        local_ipaddr6,
 244                                        false,
 245                                        I40IW_ARP_DELETE);
 246                 return NOTIFY_OK;
 247         case NETDEV_UP:
 248                 /* Fall through */
 249         case NETDEV_CHANGEADDR:
 250                 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
 251                 i40iw_manage_arp_cache(iwdev,
 252                                        netdev->dev_addr,
 253                                        local_ipaddr6,
 254                                        false,
 255                                        I40IW_ARP_ADD);
 256                 break;
 257         default:
 258                 break;
 259         }
 260         return NOTIFY_DONE;
 261 }
 262
 263 /**
 264  * i40iw_net_event - system notifier for net events
 265  * @notfier: not used
 266  * @event: event for notifier
 267  * @ptr: neighbor
 268  */
 269 int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
 270 {
 271         struct neighbour *neigh = ptr;
 272         struct i40iw_device *iwdev;
 273         struct i40iw_handler *iwhdl;
 274         __be32 *p;
 275         u32 local_ipaddr[4];
 276
 277         switch (event) {
 278         case NETEVENT_NEIGH_UPDATE:
 279                 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
 280                 if (!iwhdl)
 281                         return NOTIFY_DONE;
 282                 iwdev = &iwhdl->device;
 283                 p = (__be32 *)neigh->primary_key;
 284                 i40iw_copy_ip_ntohl(local_ipaddr, p);
 285                 if (neigh->nud_state & NUD_VALID) {
 286                         i40iw_manage_arp_cache(iwdev,
 287                                                neigh->ha,
 288                                                local_ipaddr,
 289                                                false,
 290                                                I40IW_ARP_ADD);
 291
 292                 } else {
 293                         i40iw_manage_arp_cache(iwdev,
 294                                                neigh->ha,
 295                                                local_ipaddr,
 296                                                false,
 297                                                I40IW_ARP_DELETE);
 298                 }
 299                 break;
 300         default:
 301                 break;
 302         }
 303         return NOTIFY_DONE;
 304 }
 305
 306 /**
 307  * i40iw_get_cqp_request - get cqp struct
 308  * @cqp: device cqp ptr
 309  * @wait: cqp to be used in wait mode
 310  */
 311 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
 312 {
 313         struct i40iw_cqp_request *cqp_request = NULL;
 314         unsigned long flags;
 315
 316         spin_lock_irqsave(&cqp->req_lock, flags);
 317         if (!list_empty(&cqp->cqp_avail_reqs)) {
 318                 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
 319                                          struct i40iw_cqp_request, list);
 320                 list_del_init(&cqp_request->list);
 321         }
 322         spin_unlock_irqrestore(&cqp->req_lock, flags);
 323         if (!cqp_request) {
 324                 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
 325                 if (cqp_request) {
 326                         cqp_request->dynamic = true;
 327                         INIT_LIST_HEAD(&cqp_request->list);
 328                         init_waitqueue_head(&cqp_request->waitq);
 329                 }
 330         }
 331         if (!cqp_request) {
 332                 i40iw_pr_err("CQP Request Fail: No Memory");
 333                 return NULL;
 334         }
 335
 336         if (wait) {
 337                 atomic_set(&cqp_request->refcount, 2);
 338                 cqp_request->waiting = true;
 339         } else {
 340                 atomic_set(&cqp_request->refcount, 1);
 341         }
 342         return cqp_request;
 343 }
 344
 345 /**
 346  * i40iw_free_cqp_request - free cqp request
 347  * @cqp: cqp ptr
 348  * @cqp_request: to be put back in cqp list
 349  */
 350 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
 351 {
 352         unsigned long flags;
 353
 354         if (cqp_request->dynamic) {
 355                 kfree(cqp_request);
 356         } else {
 357                 cqp_request->request_done = false;
 358                 cqp_request->callback_fcn = NULL;
 359                 cqp_request->waiting = false;
 360
 361                 spin_lock_irqsave(&cqp->req_lock, flags);
 362                 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
 363                 spin_unlock_irqrestore(&cqp->req_lock, flags);
 364         }
 365 }
 366
 367 /**
 368  * i40iw_put_cqp_request - dec ref count and free if 0
 369  * @cqp: cqp ptr
 370  * @cqp_request: to be put back in cqp list
 371  */
 372 void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
 373                            struct i40iw_cqp_request *cqp_request)
 374 {
 375         if (atomic_dec_and_test(&cqp_request->refcount))
 376                 i40iw_free_cqp_request(cqp, cqp_request);
 377 }
 378
 379 /**
 380  * i40iw_free_qp - callback after destroy cqp completes
 381  * @cqp_request: cqp request for destroy qp
 382  * @num: not used
 383  */
 384 static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
 385 {
 386         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
 387         struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
 388         struct i40iw_device *iwdev;
 389         u32 qp_num = iwqp->ibqp.qp_num;
 390
 391         iwdev = iwqp->iwdev;
 392
 393         i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
 394         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 395 }
 396
 397 /**
 398  * i40iw_wait_event - wait for completion
 399  * @iwdev: iwarp device
 400  * @cqp_request: cqp request to wait
 401  */
 402 static int i40iw_wait_event(struct i40iw_device *iwdev,
 403                             struct i40iw_cqp_request *cqp_request)
 404 {
 405         struct cqp_commands_info *info = &cqp_request->info;
 406         struct i40iw_cqp *iwcqp = &iwdev->cqp;
 407         bool cqp_error = false;
 408         int err_code = 0;
 409         int timeout_ret = 0;
 410
 411         timeout_ret = wait_event_timeout(cqp_request->waitq,
 412                                          cqp_request->request_done,
 413                                          I40IW_EVENT_TIMEOUT);
 414         if (!timeout_ret) {
 415                 i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n",
 416                              info->cqp_cmd, timeout_ret);
 417                 err_code = -ETIME;
 418                 i40iw_request_reset(iwdev);
 419                 goto done;
 420         }
 421         cqp_error = cqp_request->compl_info.error;
 422         if (cqp_error) {
 423                 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
 424                              info->cqp_cmd, cqp_request->compl_info.maj_err_code,
 425                              cqp_request->compl_info.min_err_code);
 426                 err_code = -EPROTO;
 427                 goto done;
 428         }
 429 done:
 430         i40iw_put_cqp_request(iwcqp, cqp_request);
 431         return err_code;
 432 }
 433
 434 /**
 435  * i40iw_handle_cqp_op - process cqp command
 436  * @iwdev: iwarp device
 437  * @cqp_request: cqp request to process
 438  */
 439 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
 440                                            struct i40iw_cqp_request
 441                                            *cqp_request)
 442 {
 443         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 444         enum i40iw_status_code status;
 445         struct cqp_commands_info *info = &cqp_request->info;
 446         int err_code = 0;
 447
 448         status = i40iw_process_cqp_cmd(dev, info);
 449         if (status) {
 450                 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
 451                 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
 452                 return status;
 453         }
 454         if (cqp_request->waiting)
 455                 err_code = i40iw_wait_event(iwdev, cqp_request);
 456         if (err_code)
 457                 status = I40IW_ERR_CQP_COMPL_ERROR;
 458         return status;
 459 }
 460
 461 /**
 462  * i40iw_add_pdusecount - add pd refcount
 463  * @iwpd: pd for refcount
 464  */
 465 void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
 466 {
 467         atomic_inc(&iwpd->usecount);
 468 }
 469
 470 /**
 471  * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
 472  * @iwpd: pd for refcount
 473  * @iwdev: iwarp device
 474  */
 475 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
 476 {
 477         if (!atomic_dec_and_test(&iwpd->usecount))
 478                 return;
 479         i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
 480         kfree(iwpd);
 481 }
 482
 483 /**
 484  * i40iw_add_ref - add refcount for qp
 485  * @ibqp: iqarp qp
 486  */
 487 void i40iw_add_ref(struct ib_qp *ibqp)
 488 {
 489         struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
 490
 491         atomic_inc(&iwqp->refcount);
 492 }
 493
 494 /**
 495  * i40iw_rem_ref - rem refcount for qp and free if 0
 496  * @ibqp: iqarp qp
 497  */
 498 void i40iw_rem_ref(struct ib_qp *ibqp)
 499 {
 500         struct i40iw_qp *iwqp;
 501         enum i40iw_status_code status;
 502         struct i40iw_cqp_request *cqp_request;
 503         struct cqp_commands_info *cqp_info;
 504         struct i40iw_device *iwdev;
 505         u32 qp_num;
 506         unsigned long flags;
 507
 508         iwqp = to_iwqp(ibqp);
 509         iwdev = iwqp->iwdev;
 510         spin_lock_irqsave(&iwdev->qptable_lock, flags);
 511         if (!atomic_dec_and_test(&iwqp->refcount)) {
 512                 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
 513                 return;
 514         }
 515
 516         qp_num = iwqp->ibqp.qp_num;
 517         iwdev->qp_table[qp_num] = NULL;
 518         spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
 519         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 520         if (!cqp_request)
 521                 return;
 522
 523         cqp_request->callback_fcn = i40iw_free_qp;
 524         cqp_request->param = (void *)&iwqp->sc_qp;
 525         cqp_info = &cqp_request->info;
 526         cqp_info->cqp_cmd = OP_QP_DESTROY;
 527         cqp_info->post_sq = 1;
 528         cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
 529         cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
 530         cqp_info->in.u.qp_destroy.remove_hash_idx = true;
 531         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 532         if (status)
 533                 i40iw_pr_err("CQP-OP Destroy QP fail");
 534 }
 535
 536 /**
 537  * i40iw_get_qp - get qp address
 538  * @device: iwarp device
 539  * @qpn: qp number
 540  */
 541 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
 542 {
 543         struct i40iw_device *iwdev = to_iwdev(device);
 544
 545         if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
 546                 return NULL;
 547
 548         return &iwdev->qp_table[qpn]->ibqp;
 549 }
 550
 551 /**
 552  * i40iw_debug_buf - print debug msg and buffer is mask set
 553  * @dev: hardware control device structure
 554  * @mask: mask to compare if to print debug buffer
 555  * @buf: points buffer addr
 556  * @size: saize of buffer to print
 557  */
 558 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
 559                      enum i40iw_debug_flag mask,
 560                      char *desc,
 561                      u64 *buf,
 562                      u32 size)
 563 {
 564         u32 i;
 565
 566         if (!(dev->debug_mask & mask))
 567                 return;
 568         i40iw_debug(dev, mask, "%s\n", desc);
 569         i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
 570                     (unsigned long long)virt_to_phys(buf));
 571
 572         for (i = 0; i < size; i += 8)
 573                 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
 574 }
 575
 576 /**
 577  * i40iw_get_hw_addr - return hw addr
 578  * @par: points to shared dev
 579  */
 580 u8 __iomem *i40iw_get_hw_addr(void *par)
 581 {
 582         struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
 583
 584         return dev->hw->hw_addr;
 585 }
 586
 587 /**
 588  * i40iw_remove_head - return head entry and remove from list
 589  * @list: list for entry
 590  */
 591 void *i40iw_remove_head(struct list_head *list)
 592 {
 593         struct list_head *entry;
 594
 595         if (list_empty(list))
 596                 return NULL;
 597
 598         entry = (void *)list->next;
 599         list_del(entry);
 600         return (void *)entry;
 601 }
 602
 603 /**
 604  * i40iw_allocate_dma_mem - Memory alloc helper fn
 605  * @hw:   pointer to the HW structure
 606  * @mem:  ptr to mem struct to fill out
 607  * @size: size of memory requested
 608  * @alignment: what to align the allocation to
 609  */
 610 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
 611                                               struct i40iw_dma_mem *mem,
 612                                               u64 size,
 613                                               u32 alignment)
 614 {
 615         struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
 616
 617         if (!mem)
 618                 return I40IW_ERR_PARAM;
 619         mem->size = ALIGN(size, alignment);
 620         mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
 621                                       (dma_addr_t *)&mem->pa, GFP_KERNEL);
 622         if (!mem->va)
 623                 return I40IW_ERR_NO_MEMORY;
 624         return 0;
 625 }
 626
 627 /**
 628  * i40iw_free_dma_mem - Memory free helper fn
 629  * @hw:   pointer to the HW structure
 630  * @mem:  ptr to mem struct to free
 631  */
 632 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
 633 {
 634         struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
 635
 636         if (!mem || !mem->va)
 637                 return;
 638
 639         dma_free_coherent(&pcidev->dev, mem->size,
 640                           mem->va, (dma_addr_t)mem->pa);
 641         mem->va = NULL;
 642 }
 643
 644 /**
 645  * i40iw_allocate_virt_mem - virtual memory alloc helper fn
 646  * @hw:   pointer to the HW structure
 647  * @mem:  ptr to mem struct to fill out
 648  * @size: size of memory requested
 649  */
 650 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
 651                                                struct i40iw_virt_mem *mem,
 652                                                u32 size)
 653 {
 654         if (!mem)
 655                 return I40IW_ERR_PARAM;
 656
 657         mem->size = size;
 658         mem->va = kzalloc(size, GFP_KERNEL);
 659
 660         if (mem->va)
 661                 return 0;
 662         else
 663                 return I40IW_ERR_NO_MEMORY;
 664 }
 665
 666 /**
 667  * i40iw_free_virt_mem - virtual memory free helper fn
 668  * @hw:   pointer to the HW structure
 669  * @mem:  ptr to mem struct to free
 670  */
 671 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
 672                                            struct i40iw_virt_mem *mem)
 673 {
 674         if (!mem)
 675                 return I40IW_ERR_PARAM;
 676         kfree(mem->va);
 677         mem->va = NULL;
 678         return 0;
 679 }
 680
 681 /**
 682  * i40iw_cqp_sds_cmd - create cqp command for sd
 683  * @dev: hardware control device structure
 684  * @sd_info: information  for sd cqp
 685  *
 686  */
 687 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
 688                                          struct i40iw_update_sds_info *sdinfo)
 689 {
 690         enum i40iw_status_code status;
 691         struct i40iw_cqp_request *cqp_request;
 692         struct cqp_commands_info *cqp_info;
 693         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 694
 695         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 696         if (!cqp_request)
 697                 return I40IW_ERR_NO_MEMORY;
 698         cqp_info = &cqp_request->info;
 699         memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
 700                sizeof(cqp_info->in.u.update_pe_sds.info));
 701         cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
 702         cqp_info->post_sq = 1;
 703         cqp_info->in.u.update_pe_sds.dev = dev;
 704         cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
 705         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 706         if (status)
 707                 i40iw_pr_err("CQP-OP Update SD's fail");
 708         return status;
 709 }
 710
 711 /**
 712  * i40iw_term_modify_qp - modify qp for term message
 713  * @qp: hardware control qp
 714  * @next_state: qp's next state
 715  * @term: terminate code
 716  * @term_len: length
 717  */
 718 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
 719 {
 720         struct i40iw_qp *iwqp;
 721
 722         iwqp = (struct i40iw_qp *)qp->back_qp;
 723         i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
 724 };
 725
 726 /**
 727  * i40iw_terminate_done - after terminate is completed
 728  * @qp: hardware control qp
 729  * @timeout_occurred: indicates if terminate timer expired
 730  */
 731 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
 732 {
 733         struct i40iw_qp *iwqp;
 734         u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
 735         u8 hte = 0;
 736         bool first_time;
 737         unsigned long flags;
 738
 739         iwqp = (struct i40iw_qp *)qp->back_qp;
 740         spin_lock_irqsave(&iwqp->lock, flags);
 741         if (iwqp->hte_added) {
 742                 iwqp->hte_added = 0;
 743                 hte = 1;
 744         }
 745         first_time = !(qp->term_flags & I40IW_TERM_DONE);
 746         qp->term_flags |= I40IW_TERM_DONE;
 747         spin_unlock_irqrestore(&iwqp->lock, flags);
 748         if (first_time) {
 749                 if (!timeout_occurred)
 750                         i40iw_terminate_del_timer(qp);
 751                 else
 752                         next_iwarp_state = I40IW_QP_STATE_CLOSING;
 753
 754                 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
 755                 i40iw_cm_disconn(iwqp);
 756         }
 757 }
 758
 759 /**
 760  * i40iw_terminate_imeout - timeout happened
 761  * @context: points to iwarp qp
 762  */
 763 static void i40iw_terminate_timeout(unsigned long context)
 764 {
 765         struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
 766         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
 767
 768         i40iw_terminate_done(qp, 1);
 769 }
 770
 771 /**
 772  * i40iw_terminate_start_timer - start terminate timeout
 773  * @qp: hardware control qp
 774  */
 775 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
 776 {
 777         struct i40iw_qp *iwqp;
 778
 779         iwqp = (struct i40iw_qp *)qp->back_qp;
 780         init_timer(&iwqp->terminate_timer);
 781         iwqp->terminate_timer.function = i40iw_terminate_timeout;
 782         iwqp->terminate_timer.expires = jiffies + HZ;
 783         iwqp->terminate_timer.data = (unsigned long)iwqp;
 784         add_timer(&iwqp->terminate_timer);
 785 }
 786
 787 /**
 788  * i40iw_terminate_del_timer - delete terminate timeout
 789  * @qp: hardware control qp
 790  */
 791 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
 792 {
 793         struct i40iw_qp *iwqp;
 794
 795         iwqp = (struct i40iw_qp *)qp->back_qp;
 796         del_timer(&iwqp->terminate_timer);
 797 }
 798
 799 /**
 800  * i40iw_cqp_generic_worker - generic worker for cqp
 801  * @work: work pointer
 802  */
 803 static void i40iw_cqp_generic_worker(struct work_struct *work)
 804 {
 805         struct i40iw_virtchnl_work_info *work_info =
 806             &((struct virtchnl_work *)work)->work_info;
 807
 808         if (work_info->worker_vf_dev)
 809                 work_info->callback_fcn(work_info->worker_vf_dev);
 810 }
 811
 812 /**
 813  * i40iw_cqp_spawn_worker - spawn worket thread
 814  * @iwdev: device struct pointer
 815  * @work_info: work request info
 816  * @iw_vf_idx: virtual function index
 817  */
 818 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
 819                             struct i40iw_virtchnl_work_info *work_info,
 820                             u32 iw_vf_idx)
 821 {
 822         struct virtchnl_work *work;
 823         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 824
 825         work = &iwdev->virtchnl_w[iw_vf_idx];
 826         memcpy(&work->work_info, work_info, sizeof(*work_info));
 827         INIT_WORK(&work->work, i40iw_cqp_generic_worker);
 828         queue_work(iwdev->virtchnl_wq, &work->work);
 829 }
 830
 831 /**
 832  * i40iw_cqp_manage_hmc_fcn_worker -
 833  * @work: work pointer for hmc info
 834  */
 835 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
 836 {
 837         struct i40iw_cqp_request *cqp_request =
 838             ((struct virtchnl_work *)work)->cqp_request;
 839         struct i40iw_ccq_cqe_info ccq_cqe_info;
 840         struct i40iw_hmc_fcn_info *hmcfcninfo =
 841                         &cqp_request->info.in.u.manage_hmc_pm.info;
 842         struct i40iw_device *iwdev =
 843             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
 844
 845         ccq_cqe_info.cqp = NULL;
 846         ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
 847         ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
 848         ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
 849         ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
 850         ccq_cqe_info.scratch = 0;
 851         ccq_cqe_info.error = cqp_request->compl_info.error;
 852         hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
 853                                  hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
 854         i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
 855 }
 856
 857 /**
 858  * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
 859  * @cqp_request: cqp request info struct for hmc fun
 860  * @unused: unused param of callback
 861  */
 862 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
 863                                               u32 unused)
 864 {
 865         struct virtchnl_work *work;
 866         struct i40iw_hmc_fcn_info *hmcfcninfo =
 867             &cqp_request->info.in.u.manage_hmc_pm.info;
 868         struct i40iw_device *iwdev =
 869             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
 870             back_dev;
 871
 872         if (hmcfcninfo && hmcfcninfo->callback_fcn) {
 873                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
 874                 atomic_inc(&cqp_request->refcount);
 875                 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
 876                 work->cqp_request = cqp_request;
 877                 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
 878                 queue_work(iwdev->virtchnl_wq, &work->work);
 879                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
 880         } else {
 881                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
 882         }
 883 }
 884
 885 /**
 886  * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
 887  * @dev: hardware control device structure
 888  * @hmcfcninfo: info for hmc
 889  */
 890 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
 891                                                     struct i40iw_hmc_fcn_info *hmcfcninfo)
 892 {
 893         enum i40iw_status_code status;
 894         struct i40iw_cqp_request *cqp_request;
 895         struct cqp_commands_info *cqp_info;
 896         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 897
 898         i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
 899         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 900         if (!cqp_request)
 901                 return I40IW_ERR_NO_MEMORY;
 902         cqp_info = &cqp_request->info;
 903         cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
 904         cqp_request->param = hmcfcninfo;
 905         memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
 906                sizeof(*hmcfcninfo));
 907         cqp_info->in.u.manage_hmc_pm.dev = dev;
 908         cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
 909         cqp_info->post_sq = 1;
 910         cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
 911         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 912         if (status)
 913                 i40iw_pr_err("CQP-OP Manage HMC fail");
 914         return status;
 915 }
 916
 917 /**
 918  * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
 919  * @iwdev: function device struct
 920  * @values_mem: buffer for fpm
 921  * @hmc_fn_id: function id for fpm
 922  */
 923 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
 924                                                       struct i40iw_dma_mem *values_mem,
 925                                                       u8 hmc_fn_id)
 926 {
 927         enum i40iw_status_code status;
 928         struct i40iw_cqp_request *cqp_request;
 929         struct cqp_commands_info *cqp_info;
 930         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 931
 932         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 933         if (!cqp_request)
 934                 return I40IW_ERR_NO_MEMORY;
 935         cqp_info = &cqp_request->info;
 936         cqp_request->param = NULL;
 937         cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
 938         cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
 939         cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
 940         cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
 941         cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
 942         cqp_info->post_sq = 1;
 943         cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
 944         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 945         if (status)
 946                 i40iw_pr_err("CQP-OP Query FPM fail");
 947         return status;
 948 }
 949
 950 /**
 951  * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
 952  * @dev: hardware control device structure
 953  * @values_mem: buffer with fpm values
 954  * @hmc_fn_id: function id for fpm
 955  */
 956 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
 957                                                        struct i40iw_dma_mem *values_mem,
 958                                                        u8 hmc_fn_id)
 959 {
 960         enum i40iw_status_code status;
 961         struct i40iw_cqp_request *cqp_request;
 962         struct cqp_commands_info *cqp_info;
 963         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 964
 965         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 966         if (!cqp_request)
 967                 return I40IW_ERR_NO_MEMORY;
 968         cqp_info = &cqp_request->info;
 969         cqp_request->param = NULL;
 970         cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
 971         cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
 972         cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
 973         cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
 974         cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
 975         cqp_info->post_sq = 1;
 976         cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
 977         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 978         if (status)
 979                 i40iw_pr_err("CQP-OP Commit FPM fail");
 980         return status;
 981 }
 982
 983 /**
 984  * i40iw_vf_wait_vchnl_resp - wait for channel msg
 985  * @iwdev: function's device struct
 986  */
 987 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
 988 {
 989         struct i40iw_device *iwdev = dev->back_dev;
 990         int timeout_ret;
 991
 992         i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
 993                     __func__, __LINE__, dev, iwdev);
 994
 995         atomic_set(&iwdev->vchnl_msgs, 2);
 996         timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
 997                                          (atomic_read(&iwdev->vchnl_msgs) == 1),
 998                                          I40IW_VCHNL_EVENT_TIMEOUT);
 999         atomic_dec(&iwdev->vchnl_msgs);
1000         if (!timeout_ret) {
1001                 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1002                 atomic_set(&iwdev->vchnl_msgs, 0);
1003                 dev->vchnl_up = false;
1004                 return I40IW_ERR_TIMEOUT;
1005         }
1006         wake_up(&dev->vf_reqs);
1007         return 0;
1008 }
1009
1010 /**
1011  * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1012  * @dev: hardware control device structure
1013  * @qp: hardware control qp
1014  */
1015 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1016 {
1017         struct i40iw_qp_flush_info info;
1018         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1019
1020         i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1021         memset(&info, 0, sizeof(info));
1022         info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1023         info.generate_ae = true;
1024         info.ae_source = 0x3;
1025         (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1026 }
1027
1028 /**
1029  * i40iw_init_hash_desc - initialize hash for crc calculation
1030  * @desc: cryption type
1031  */
1032 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1033 {
1034         struct crypto_shash *tfm;
1035         struct shash_desc *tdesc;
1036
1037         tfm = crypto_alloc_shash("crc32c", 0, 0);
1038         if (IS_ERR(tfm))
1039                 return I40IW_ERR_MPA_CRC;
1040
1041         tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1042                         GFP_KERNEL);
1043         if (!tdesc) {
1044                 crypto_free_shash(tfm);
1045                 return I40IW_ERR_MPA_CRC;
1046         }
1047         tdesc->tfm = tfm;
1048         *desc = tdesc;
1049
1050         return 0;
1051 }
1052
1053 /**
1054  * i40iw_free_hash_desc - free hash desc
1055  * @desc: to be freed
1056  */
1057 void i40iw_free_hash_desc(struct shash_desc *desc)
1058 {
1059         if (desc) {
1060                 crypto_free_shash(desc->tfm);
1061                 kfree(desc);
1062         }
1063 }
1064
1065 /**
1066  * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1067  * @dev: hardware control device structure
1068  * @mem: buffer ptr for fpm to be allocated
1069  * @return: memory allocation status
1070  */
1071 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1072                                                  struct i40iw_dma_mem *mem)
1073 {
1074         enum i40iw_status_code status;
1075         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1076
1077         status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1078                                        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1079         return status;
1080 }
1081
1082 /**
1083  * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1084  * @desc: desc for hash
1085  * @addr: address of buffer for crc
1086  * @length: length of buffer
1087  * @value: value to be compared
1088  */
1089 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1090                                               void *addr,
1091                                               u32 length,
1092                                               u32 value)
1093 {
1094         u32 crc = 0;
1095         int ret;
1096         enum i40iw_status_code ret_code = 0;
1097
1098         crypto_shash_init(desc);
1099         ret = crypto_shash_update(desc, addr, length);
1100         if (!ret)
1101                 crypto_shash_final(desc, (u8 *)&crc);
1102         if (crc != value) {
1103                 i40iw_pr_err("mpa crc check fail\n");
1104                 ret_code = I40IW_ERR_MPA_CRC;
1105         }
1106         return ret_code;
1107 }
1108
1109 /**
1110  * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1111  * @dev: hardware control device structure
1112  * @buf: receive puda buffer on exception q
1113  */
1114 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1115                                      struct i40iw_puda_buf *buf)
1116 {
1117         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1118         struct i40iw_qp *iwqp;
1119         struct i40iw_cm_node *cm_node;
1120         u32 loc_addr[4], rem_addr[4];
1121         u16 loc_port, rem_port;
1122         struct ipv6hdr *ip6h;
1123         struct iphdr *iph = (struct iphdr *)buf->iph;
1124         struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1125
1126         if (iph->version == 4) {
1127                 memset(loc_addr, 0, sizeof(loc_addr));
1128                 loc_addr[0] = ntohl(iph->daddr);
1129                 memset(rem_addr, 0, sizeof(rem_addr));
1130                 rem_addr[0] = ntohl(iph->saddr);
1131         } else {
1132                 ip6h = (struct ipv6hdr *)buf->iph;
1133                 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1134                 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1135         }
1136         loc_port = ntohs(tcph->dest);
1137         rem_port = ntohs(tcph->source);
1138
1139         cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1140                                   loc_addr, false);
1141         if (!cm_node)
1142                 return NULL;
1143         iwqp = cm_node->iwqp;
1144         return &iwqp->sc_qp;
1145 }
1146
1147 /**
1148  * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1149  * @buf: puda to update
1150  * @length: length of buffer
1151  * @seqnum: seq number for tcp
1152  */
1153 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1154 {
1155         struct tcphdr *tcph;
1156         struct iphdr *iph;
1157         u16 iphlen;
1158         u16 packetsize;
1159         u8 *addr = (u8 *)buf->mem.va;
1160
1161         iphlen = (buf->ipv4) ? 20 : 40;
1162         iph = (struct iphdr *)(addr + buf->maclen);
1163         tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1164         packetsize = length + buf->tcphlen + iphlen;
1165
1166         iph->tot_len = htons(packetsize);
1167         tcph->seq = htonl(seqnum);
1168 }
1169
1170 /**
1171  * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1172  * @info: to get information
1173  * @buf: puda buffer
1174  */
1175 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1176                                                  struct i40iw_puda_buf *buf)
1177 {
1178         struct iphdr *iph;
1179         struct ipv6hdr *ip6h;
1180         struct tcphdr *tcph;
1181         u16 iphlen;
1182         u16 pkt_len;
1183         u8 *mem = (u8 *)buf->mem.va;
1184         struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1185
1186         if (ethh->h_proto == htons(0x8100)) {
1187                 info->vlan_valid = true;
1188                 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1189         }
1190         buf->maclen = (info->vlan_valid) ? 18 : 14;
1191         iphlen = (info->l3proto) ? 40 : 20;
1192         buf->ipv4 = (info->l3proto) ? false : true;
1193         buf->iph = mem + buf->maclen;
1194         iph = (struct iphdr *)buf->iph;
1195
1196         buf->tcph = buf->iph + iphlen;
1197         tcph = (struct tcphdr *)buf->tcph;
1198
1199         if (buf->ipv4) {
1200                 pkt_len = ntohs(iph->tot_len);
1201         } else {
1202                 ip6h = (struct ipv6hdr *)buf->iph;
1203                 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1204         }
1205
1206         buf->totallen = pkt_len + buf->maclen;
1207
1208         if (info->payload_len < buf->totallen - 4) {
1209                 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1210                              info->payload_len, buf->totallen);
1211                 return I40IW_ERR_INVALID_SIZE;
1212         }
1213
1214         buf->tcphlen = (tcph->doff) << 2;
1215         buf->datalen = pkt_len - iphlen - buf->tcphlen;
1216         buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1217         buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1218         buf->seqnum = ntohl(tcph->seq);
1219         return 0;
1220 }
1221
1222 /**
1223  * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1224  * @dev: hardware control device structure
1225  */
1226 static void i40iw_hw_stats_timeout(unsigned long dev)
1227 {
1228         struct i40iw_sc_dev *pf_dev = (struct i40iw_sc_dev *)dev;
1229         struct i40iw_dev_pestat *pf_devstat = &pf_dev->dev_pestat;
1230         struct i40iw_dev_pestat *vf_devstat = NULL;
1231         u16 iw_vf_idx;
1232         unsigned long flags;
1233
1234         /*PF*/
1235         pf_devstat->ops.iw_hw_stat_read_all(pf_devstat, &pf_devstat->hw_stats);
1236         for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1237                 spin_lock_irqsave(&pf_devstat->stats_lock, flags);
1238                 if (pf_dev->vf_dev[iw_vf_idx]) {
1239                         if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1240                                 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->dev_pestat;
1241                                 vf_devstat->ops.iw_hw_stat_read_all(vf_devstat, &vf_devstat->hw_stats);
1242                         }
1243                 }
1244                 spin_unlock_irqrestore(&pf_devstat->stats_lock, flags);
1245         }
1246
1247         mod_timer(&pf_devstat->stats_timer,
1248                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1249 }
1250
1251 /**
1252  * i40iw_hw_stats_start_timer - Start periodic stats timer
1253  * @dev: hardware control device structure
1254  */
1255 void i40iw_hw_stats_start_timer(struct i40iw_sc_dev *dev)
1256 {
1257         struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
1258
1259         init_timer(&devstat->stats_timer);
1260         devstat->stats_timer.function = i40iw_hw_stats_timeout;
1261         devstat->stats_timer.data = (unsigned long)dev;
1262         mod_timer(&devstat->stats_timer,
1263                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1264 }
1265
1266 /**
1267  * i40iw_hw_stats_del_timer - Delete periodic stats timer
1268  * @dev: hardware control device structure
1269  */
1270 void i40iw_hw_stats_del_timer(struct i40iw_sc_dev *dev)
1271 {
1272         struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
1273
1274         del_timer_sync(&devstat->stats_timer);
1275 }