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         /*
 677          * mem->va points to the parent of mem, so both mem and mem->va
 678          * can not be touched once mem->va is freed
 679          */
 680         kfree(mem->va);
 681         return 0;
 682 }
 683
 684 /**
 685  * i40iw_cqp_sds_cmd - create cqp command for sd
 686  * @dev: hardware control device structure
 687  * @sd_info: information  for sd cqp
 688  *
 689  */
 690 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
 691                                          struct i40iw_update_sds_info *sdinfo)
 692 {
 693         enum i40iw_status_code status;
 694         struct i40iw_cqp_request *cqp_request;
 695         struct cqp_commands_info *cqp_info;
 696         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 697
 698         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 699         if (!cqp_request)
 700                 return I40IW_ERR_NO_MEMORY;
 701         cqp_info = &cqp_request->info;
 702         memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
 703                sizeof(cqp_info->in.u.update_pe_sds.info));
 704         cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
 705         cqp_info->post_sq = 1;
 706         cqp_info->in.u.update_pe_sds.dev = dev;
 707         cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
 708         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 709         if (status)
 710                 i40iw_pr_err("CQP-OP Update SD's fail");
 711         return status;
 712 }
 713
 714 /**
 715  * i40iw_term_modify_qp - modify qp for term message
 716  * @qp: hardware control qp
 717  * @next_state: qp's next state
 718  * @term: terminate code
 719  * @term_len: length
 720  */
 721 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
 722 {
 723         struct i40iw_qp *iwqp;
 724
 725         iwqp = (struct i40iw_qp *)qp->back_qp;
 726         i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
 727 };
 728
 729 /**
 730  * i40iw_terminate_done - after terminate is completed
 731  * @qp: hardware control qp
 732  * @timeout_occurred: indicates if terminate timer expired
 733  */
 734 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
 735 {
 736         struct i40iw_qp *iwqp;
 737         u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
 738         u8 hte = 0;
 739         bool first_time;
 740         unsigned long flags;
 741
 742         iwqp = (struct i40iw_qp *)qp->back_qp;
 743         spin_lock_irqsave(&iwqp->lock, flags);
 744         if (iwqp->hte_added) {
 745                 iwqp->hte_added = 0;
 746                 hte = 1;
 747         }
 748         first_time = !(qp->term_flags & I40IW_TERM_DONE);
 749         qp->term_flags |= I40IW_TERM_DONE;
 750         spin_unlock_irqrestore(&iwqp->lock, flags);
 751         if (first_time) {
 752                 if (!timeout_occurred)
 753                         i40iw_terminate_del_timer(qp);
 754                 else
 755                         next_iwarp_state = I40IW_QP_STATE_CLOSING;
 756
 757                 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
 758                 i40iw_cm_disconn(iwqp);
 759         }
 760 }
 761
 762 /**
 763  * i40iw_terminate_imeout - timeout happened
 764  * @context: points to iwarp qp
 765  */
 766 static void i40iw_terminate_timeout(unsigned long context)
 767 {
 768         struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
 769         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
 770
 771         i40iw_terminate_done(qp, 1);
 772 }
 773
 774 /**
 775  * i40iw_terminate_start_timer - start terminate timeout
 776  * @qp: hardware control qp
 777  */
 778 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
 779 {
 780         struct i40iw_qp *iwqp;
 781
 782         iwqp = (struct i40iw_qp *)qp->back_qp;
 783         init_timer(&iwqp->terminate_timer);
 784         iwqp->terminate_timer.function = i40iw_terminate_timeout;
 785         iwqp->terminate_timer.expires = jiffies + HZ;
 786         iwqp->terminate_timer.data = (unsigned long)iwqp;
 787         add_timer(&iwqp->terminate_timer);
 788 }
 789
 790 /**
 791  * i40iw_terminate_del_timer - delete terminate timeout
 792  * @qp: hardware control qp
 793  */
 794 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
 795 {
 796         struct i40iw_qp *iwqp;
 797
 798         iwqp = (struct i40iw_qp *)qp->back_qp;
 799         del_timer(&iwqp->terminate_timer);
 800 }
 801
 802 /**
 803  * i40iw_cqp_generic_worker - generic worker for cqp
 804  * @work: work pointer
 805  */
 806 static void i40iw_cqp_generic_worker(struct work_struct *work)
 807 {
 808         struct i40iw_virtchnl_work_info *work_info =
 809             &((struct virtchnl_work *)work)->work_info;
 810
 811         if (work_info->worker_vf_dev)
 812                 work_info->callback_fcn(work_info->worker_vf_dev);
 813 }
 814
 815 /**
 816  * i40iw_cqp_spawn_worker - spawn worket thread
 817  * @iwdev: device struct pointer
 818  * @work_info: work request info
 819  * @iw_vf_idx: virtual function index
 820  */
 821 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
 822                             struct i40iw_virtchnl_work_info *work_info,
 823                             u32 iw_vf_idx)
 824 {
 825         struct virtchnl_work *work;
 826         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 827
 828         work = &iwdev->virtchnl_w[iw_vf_idx];
 829         memcpy(&work->work_info, work_info, sizeof(*work_info));
 830         INIT_WORK(&work->work, i40iw_cqp_generic_worker);
 831         queue_work(iwdev->virtchnl_wq, &work->work);
 832 }
 833
 834 /**
 835  * i40iw_cqp_manage_hmc_fcn_worker -
 836  * @work: work pointer for hmc info
 837  */
 838 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
 839 {
 840         struct i40iw_cqp_request *cqp_request =
 841             ((struct virtchnl_work *)work)->cqp_request;
 842         struct i40iw_ccq_cqe_info ccq_cqe_info;
 843         struct i40iw_hmc_fcn_info *hmcfcninfo =
 844                         &cqp_request->info.in.u.manage_hmc_pm.info;
 845         struct i40iw_device *iwdev =
 846             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
 847
 848         ccq_cqe_info.cqp = NULL;
 849         ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
 850         ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
 851         ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
 852         ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
 853         ccq_cqe_info.scratch = 0;
 854         ccq_cqe_info.error = cqp_request->compl_info.error;
 855         hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
 856                                  hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
 857         i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
 858 }
 859
 860 /**
 861  * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
 862  * @cqp_request: cqp request info struct for hmc fun
 863  * @unused: unused param of callback
 864  */
 865 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
 866                                               u32 unused)
 867 {
 868         struct virtchnl_work *work;
 869         struct i40iw_hmc_fcn_info *hmcfcninfo =
 870             &cqp_request->info.in.u.manage_hmc_pm.info;
 871         struct i40iw_device *iwdev =
 872             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
 873             back_dev;
 874
 875         if (hmcfcninfo && hmcfcninfo->callback_fcn) {
 876                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
 877                 atomic_inc(&cqp_request->refcount);
 878                 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
 879                 work->cqp_request = cqp_request;
 880                 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
 881                 queue_work(iwdev->virtchnl_wq, &work->work);
 882                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
 883         } else {
 884                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
 885         }
 886 }
 887
 888 /**
 889  * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
 890  * @dev: hardware control device structure
 891  * @hmcfcninfo: info for hmc
 892  */
 893 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
 894                                                     struct i40iw_hmc_fcn_info *hmcfcninfo)
 895 {
 896         enum i40iw_status_code status;
 897         struct i40iw_cqp_request *cqp_request;
 898         struct cqp_commands_info *cqp_info;
 899         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 900
 901         i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
 902         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 903         if (!cqp_request)
 904                 return I40IW_ERR_NO_MEMORY;
 905         cqp_info = &cqp_request->info;
 906         cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
 907         cqp_request->param = hmcfcninfo;
 908         memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
 909                sizeof(*hmcfcninfo));
 910         cqp_info->in.u.manage_hmc_pm.dev = dev;
 911         cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
 912         cqp_info->post_sq = 1;
 913         cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
 914         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 915         if (status)
 916                 i40iw_pr_err("CQP-OP Manage HMC fail");
 917         return status;
 918 }
 919
 920 /**
 921  * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
 922  * @iwdev: function device struct
 923  * @values_mem: buffer for fpm
 924  * @hmc_fn_id: function id for fpm
 925  */
 926 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
 927                                                       struct i40iw_dma_mem *values_mem,
 928                                                       u8 hmc_fn_id)
 929 {
 930         enum i40iw_status_code status;
 931         struct i40iw_cqp_request *cqp_request;
 932         struct cqp_commands_info *cqp_info;
 933         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 934
 935         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 936         if (!cqp_request)
 937                 return I40IW_ERR_NO_MEMORY;
 938         cqp_info = &cqp_request->info;
 939         cqp_request->param = NULL;
 940         cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
 941         cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
 942         cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
 943         cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
 944         cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
 945         cqp_info->post_sq = 1;
 946         cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
 947         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 948         if (status)
 949                 i40iw_pr_err("CQP-OP Query FPM fail");
 950         return status;
 951 }
 952
 953 /**
 954  * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
 955  * @dev: hardware control device structure
 956  * @values_mem: buffer with fpm values
 957  * @hmc_fn_id: function id for fpm
 958  */
 959 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
 960                                                        struct i40iw_dma_mem *values_mem,
 961                                                        u8 hmc_fn_id)
 962 {
 963         enum i40iw_status_code status;
 964         struct i40iw_cqp_request *cqp_request;
 965         struct cqp_commands_info *cqp_info;
 966         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 967
 968         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 969         if (!cqp_request)
 970                 return I40IW_ERR_NO_MEMORY;
 971         cqp_info = &cqp_request->info;
 972         cqp_request->param = NULL;
 973         cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
 974         cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
 975         cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
 976         cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
 977         cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
 978         cqp_info->post_sq = 1;
 979         cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
 980         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 981         if (status)
 982                 i40iw_pr_err("CQP-OP Commit FPM fail");
 983         return status;
 984 }
 985
 986 /**
 987  * i40iw_vf_wait_vchnl_resp - wait for channel msg
 988  * @iwdev: function's device struct
 989  */
 990 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
 991 {
 992         struct i40iw_device *iwdev = dev->back_dev;
 993         int timeout_ret;
 994
 995         i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
 996                     __func__, __LINE__, dev, iwdev);
 997
 998         atomic_set(&iwdev->vchnl_msgs, 2);
 999         timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1000                                          (atomic_read(&iwdev->vchnl_msgs) == 1),
1001                                          I40IW_VCHNL_EVENT_TIMEOUT);
1002         atomic_dec(&iwdev->vchnl_msgs);
1003         if (!timeout_ret) {
1004                 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1005                 atomic_set(&iwdev->vchnl_msgs, 0);
1006                 dev->vchnl_up = false;
1007                 return I40IW_ERR_TIMEOUT;
1008         }
1009         wake_up(&dev->vf_reqs);
1010         return 0;
1011 }
1012
1013 /**
1014  * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1015  * @dev: hardware control device structure
1016  * @qp: hardware control qp
1017  */
1018 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1019 {
1020         struct i40iw_qp_flush_info info;
1021         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1022
1023         i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1024         memset(&info, 0, sizeof(info));
1025         info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1026         info.generate_ae = true;
1027         info.ae_source = 0x3;
1028         (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1029 }
1030
1031 /**
1032  * i40iw_init_hash_desc - initialize hash for crc calculation
1033  * @desc: cryption type
1034  */
1035 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1036 {
1037         struct crypto_shash *tfm;
1038         struct shash_desc *tdesc;
1039
1040         tfm = crypto_alloc_shash("crc32c", 0, 0);
1041         if (IS_ERR(tfm))
1042                 return I40IW_ERR_MPA_CRC;
1043
1044         tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1045                         GFP_KERNEL);
1046         if (!tdesc) {
1047                 crypto_free_shash(tfm);
1048                 return I40IW_ERR_MPA_CRC;
1049         }
1050         tdesc->tfm = tfm;
1051         *desc = tdesc;
1052
1053         return 0;
1054 }
1055
1056 /**
1057  * i40iw_free_hash_desc - free hash desc
1058  * @desc: to be freed
1059  */
1060 void i40iw_free_hash_desc(struct shash_desc *desc)
1061 {
1062         if (desc) {
1063                 crypto_free_shash(desc->tfm);
1064                 kfree(desc);
1065         }
1066 }
1067
1068 /**
1069  * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1070  * @dev: hardware control device structure
1071  * @mem: buffer ptr for fpm to be allocated
1072  * @return: memory allocation status
1073  */
1074 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1075                                                  struct i40iw_dma_mem *mem)
1076 {
1077         enum i40iw_status_code status;
1078         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1079
1080         status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1081                                        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1082         return status;
1083 }
1084
1085 /**
1086  * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1087  * @desc: desc for hash
1088  * @addr: address of buffer for crc
1089  * @length: length of buffer
1090  * @value: value to be compared
1091  */
1092 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1093                                               void *addr,
1094                                               u32 length,
1095                                               u32 value)
1096 {
1097         u32 crc = 0;
1098         int ret;
1099         enum i40iw_status_code ret_code = 0;
1100
1101         crypto_shash_init(desc);
1102         ret = crypto_shash_update(desc, addr, length);
1103         if (!ret)
1104                 crypto_shash_final(desc, (u8 *)&crc);
1105         if (crc != value) {
1106                 i40iw_pr_err("mpa crc check fail\n");
1107                 ret_code = I40IW_ERR_MPA_CRC;
1108         }
1109         return ret_code;
1110 }
1111
1112 /**
1113  * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1114  * @dev: hardware control device structure
1115  * @buf: receive puda buffer on exception q
1116  */
1117 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1118                                      struct i40iw_puda_buf *buf)
1119 {
1120         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1121         struct i40iw_qp *iwqp;
1122         struct i40iw_cm_node *cm_node;
1123         u32 loc_addr[4], rem_addr[4];
1124         u16 loc_port, rem_port;
1125         struct ipv6hdr *ip6h;
1126         struct iphdr *iph = (struct iphdr *)buf->iph;
1127         struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1128
1129         if (iph->version == 4) {
1130                 memset(loc_addr, 0, sizeof(loc_addr));
1131                 loc_addr[0] = ntohl(iph->daddr);
1132                 memset(rem_addr, 0, sizeof(rem_addr));
1133                 rem_addr[0] = ntohl(iph->saddr);
1134         } else {
1135                 ip6h = (struct ipv6hdr *)buf->iph;
1136                 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1137                 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1138         }
1139         loc_port = ntohs(tcph->dest);
1140         rem_port = ntohs(tcph->source);
1141
1142         cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1143                                   loc_addr, false);
1144         if (!cm_node)
1145                 return NULL;
1146         iwqp = cm_node->iwqp;
1147         return &iwqp->sc_qp;
1148 }
1149
1150 /**
1151  * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1152  * @buf: puda to update
1153  * @length: length of buffer
1154  * @seqnum: seq number for tcp
1155  */
1156 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1157 {
1158         struct tcphdr *tcph;
1159         struct iphdr *iph;
1160         u16 iphlen;
1161         u16 packetsize;
1162         u8 *addr = (u8 *)buf->mem.va;
1163
1164         iphlen = (buf->ipv4) ? 20 : 40;
1165         iph = (struct iphdr *)(addr + buf->maclen);
1166         tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1167         packetsize = length + buf->tcphlen + iphlen;
1168
1169         iph->tot_len = htons(packetsize);
1170         tcph->seq = htonl(seqnum);
1171 }
1172
1173 /**
1174  * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1175  * @info: to get information
1176  * @buf: puda buffer
1177  */
1178 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1179                                                  struct i40iw_puda_buf *buf)
1180 {
1181         struct iphdr *iph;
1182         struct ipv6hdr *ip6h;
1183         struct tcphdr *tcph;
1184         u16 iphlen;
1185         u16 pkt_len;
1186         u8 *mem = (u8 *)buf->mem.va;
1187         struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1188
1189         if (ethh->h_proto == htons(0x8100)) {
1190                 info->vlan_valid = true;
1191                 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1192         }
1193         buf->maclen = (info->vlan_valid) ? 18 : 14;
1194         iphlen = (info->l3proto) ? 40 : 20;
1195         buf->ipv4 = (info->l3proto) ? false : true;
1196         buf->iph = mem + buf->maclen;
1197         iph = (struct iphdr *)buf->iph;
1198
1199         buf->tcph = buf->iph + iphlen;
1200         tcph = (struct tcphdr *)buf->tcph;
1201
1202         if (buf->ipv4) {
1203                 pkt_len = ntohs(iph->tot_len);
1204         } else {
1205                 ip6h = (struct ipv6hdr *)buf->iph;
1206                 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1207         }
1208
1209         buf->totallen = pkt_len + buf->maclen;
1210
1211         if (info->payload_len < buf->totallen - 4) {
1212                 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1213                              info->payload_len, buf->totallen);
1214                 return I40IW_ERR_INVALID_SIZE;
1215         }
1216
1217         buf->tcphlen = (tcph->doff) << 2;
1218         buf->datalen = pkt_len - iphlen - buf->tcphlen;
1219         buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1220         buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1221         buf->seqnum = ntohl(tcph->seq);
1222         return 0;
1223 }
1224
1225 /**
1226  * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1227  * @dev: hardware control device structure
1228  */
1229 static void i40iw_hw_stats_timeout(unsigned long dev)
1230 {
1231         struct i40iw_sc_dev *pf_dev = (struct i40iw_sc_dev *)dev;
1232         struct i40iw_dev_pestat *pf_devstat = &pf_dev->dev_pestat;
1233         struct i40iw_dev_pestat *vf_devstat = NULL;
1234         u16 iw_vf_idx;
1235         unsigned long flags;
1236
1237         /*PF*/
1238         pf_devstat->ops.iw_hw_stat_read_all(pf_devstat, &pf_devstat->hw_stats);
1239         for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1240                 spin_lock_irqsave(&pf_devstat->stats_lock, flags);
1241                 if (pf_dev->vf_dev[iw_vf_idx]) {
1242                         if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1243                                 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->dev_pestat;
1244                                 vf_devstat->ops.iw_hw_stat_read_all(vf_devstat, &vf_devstat->hw_stats);
1245                         }
1246                 }
1247                 spin_unlock_irqrestore(&pf_devstat->stats_lock, flags);
1248         }
1249
1250         mod_timer(&pf_devstat->stats_timer,
1251                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1252 }
1253
1254 /**
1255  * i40iw_hw_stats_start_timer - Start periodic stats timer
1256  * @dev: hardware control device structure
1257  */
1258 void i40iw_hw_stats_start_timer(struct i40iw_sc_dev *dev)
1259 {
1260         struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
1261
1262         init_timer(&devstat->stats_timer);
1263         devstat->stats_timer.function = i40iw_hw_stats_timeout;
1264         devstat->stats_timer.data = (unsigned long)dev;
1265         mod_timer(&devstat->stats_timer,
1266                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1267 }
1268
1269 /**
1270  * i40iw_hw_stats_del_timer - Delete periodic stats timer
1271  * @dev: hardware control device structure
1272  */
1273 void i40iw_hw_stats_del_timer(struct i40iw_sc_dev *dev)
1274 {
1275         struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
1276
1277         del_timer_sync(&devstat->stats_timer);
1278 }