root/drivers/net/ethernet/intel/i40e/i40e_client.c

DEFINITIONS

1. i40e_client_get_params
2. i40e_notify_client_of_vf_msg
3. i40e_notify_client_of_l2_param_changes
4. i40e_client_release_qvlist
5. i40e_notify_client_of_netdev_close
6. i40e_notify_client_of_vf_reset
7. i40e_notify_client_of_vf_enable
8. i40e_vf_client_capable
9. i40e_client_update_msix_info
10. i40e_client_add_instance
11. i40e_client_del_instance
12. i40e_client_subtask
13. i40e_lan_add_device
14. i40e_lan_del_device
15. i40e_client_release
16. i40e_client_prepare
17. i40e_client_virtchnl_send
18. i40e_client_setup_qvlist
19. i40e_client_request_reset
20. i40e_client_update_vsi_ctxt
21. i40e_register_client
22. i40e_unregister_client

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3 
   4 #include <linux/list.h>
   5 #include <linux/errno.h>
   6 
   7 #include "i40e.h"
   8 #include "i40e_prototype.h"
   9 #include "i40e_client.h"
  10 
  11 static const char i40e_client_interface_version_str[] = I40E_CLIENT_VERSION_STR;
  12 static struct i40e_client *registered_client;
  13 static LIST_HEAD(i40e_devices);
  14 static DEFINE_MUTEX(i40e_device_mutex);
  15 
  16 static int i40e_client_virtchnl_send(struct i40e_info *ldev,
  17                                      struct i40e_client *client,
  18                                      u32 vf_id, u8 *msg, u16 len);
  19 
  20 static int i40e_client_setup_qvlist(struct i40e_info *ldev,
  21                                     struct i40e_client *client,
  22                                     struct i40e_qvlist_info *qvlist_info);
  23 
  24 static void i40e_client_request_reset(struct i40e_info *ldev,
  25                                       struct i40e_client *client,
  26                                       u32 reset_level);
  27 
  28 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
  29                                        struct i40e_client *client,
  30                                        bool is_vf, u32 vf_id,
  31                                        u32 flag, u32 valid_flag);
  32 
  33 static struct i40e_ops i40e_lan_ops = {
  34         .virtchnl_send = i40e_client_virtchnl_send,
  35         .setup_qvlist = i40e_client_setup_qvlist,
  36         .request_reset = i40e_client_request_reset,
  37         .update_vsi_ctxt = i40e_client_update_vsi_ctxt,
  38 };
  39 
  40 /**
  41  * i40e_client_get_params - Get the params that can change at runtime
  42  * @vsi: the VSI with the message
  43  * @params: client param struct
  44  *
  45  **/
  46 static
  47 int i40e_client_get_params(struct i40e_vsi *vsi, struct i40e_params *params)
  48 {
  49         struct i40e_dcbx_config *dcb_cfg = &vsi->back->hw.local_dcbx_config;
  50         int i = 0;
  51 
  52         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
  53                 u8 tc = dcb_cfg->etscfg.prioritytable[i];
  54                 u16 qs_handle;
  55 
  56                 /* If TC is not enabled for VSI use TC0 for UP */
  57                 if (!(vsi->tc_config.enabled_tc & BIT(tc)))
  58                         tc = 0;
  59 
  60                 qs_handle = le16_to_cpu(vsi->info.qs_handle[tc]);
  61                 params->qos.prio_qos[i].tc = tc;
  62                 params->qos.prio_qos[i].qs_handle = qs_handle;
  63                 if (qs_handle == I40E_AQ_VSI_QS_HANDLE_INVALID) {
  64                         dev_err(&vsi->back->pdev->dev, "Invalid queue set handle for TC = %d, vsi id = %d\n",
  65                                 tc, vsi->id);
  66                         return -EINVAL;
  67                 }
  68         }
  69 
  70         params->mtu = vsi->netdev->mtu;
  71         return 0;
  72 }
  73 
  74 /**
  75  * i40e_notify_client_of_vf_msg - call the client vf message callback
  76  * @vsi: the VSI with the message
  77  * @vf_id: the absolute VF id that sent the message
  78  * @msg: message buffer
  79  * @len: length of the message
  80  *
  81  * If there is a client to this VSI, call the client
  82  **/
  83 void
  84 i40e_notify_client_of_vf_msg(struct i40e_vsi *vsi, u32 vf_id, u8 *msg, u16 len)
  85 {
  86         struct i40e_pf *pf = vsi->back;
  87         struct i40e_client_instance *cdev = pf->cinst;
  88 
  89         if (!cdev || !cdev->client)
  90                 return;
  91         if (!cdev->client->ops || !cdev->client->ops->virtchnl_receive) {
  92                 dev_dbg(&pf->pdev->dev,
  93                         "Cannot locate client instance virtual channel receive routine\n");
  94                 return;
  95         }
  96         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
  97                 dev_dbg(&pf->pdev->dev, "Client is not open, abort virtchnl_receive\n");
  98                 return;
  99         }
 100         cdev->client->ops->virtchnl_receive(&cdev->lan_info, cdev->client,
 101                                             vf_id, msg, len);
 102 }
 103 
 104 /**
 105  * i40e_notify_client_of_l2_param_changes - call the client notify callback
 106  * @vsi: the VSI with l2 param changes
 107  *
 108  * If there is a client to this VSI, call the client
 109  **/
 110 void i40e_notify_client_of_l2_param_changes(struct i40e_vsi *vsi)
 111 {
 112         struct i40e_pf *pf = vsi->back;
 113         struct i40e_client_instance *cdev = pf->cinst;
 114         struct i40e_params params;
 115 
 116         if (!cdev || !cdev->client)
 117                 return;
 118         if (!cdev->client->ops || !cdev->client->ops->l2_param_change) {
 119                 dev_dbg(&vsi->back->pdev->dev,
 120                         "Cannot locate client instance l2_param_change routine\n");
 121                 return;
 122         }
 123         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 124                 dev_dbg(&vsi->back->pdev->dev, "Client is not open, abort l2 param change\n");
 125                 return;
 126         }
 127         memset(&params, 0, sizeof(params));
 128         i40e_client_get_params(vsi, &params);
 129         memcpy(&cdev->lan_info.params, &params, sizeof(struct i40e_params));
 130         cdev->client->ops->l2_param_change(&cdev->lan_info, cdev->client,
 131                                            &params);
 132 }
 133 
 134 /**
 135  * i40e_client_release_qvlist - release MSI-X vector mapping for client
 136  * @ldev: pointer to L2 context.
 137  *
 138  **/
 139 static void i40e_client_release_qvlist(struct i40e_info *ldev)
 140 {
 141         struct i40e_qvlist_info *qvlist_info = ldev->qvlist_info;
 142         u32 i;
 143 
 144         if (!ldev->qvlist_info)
 145                 return;
 146 
 147         for (i = 0; i < qvlist_info->num_vectors; i++) {
 148                 struct i40e_pf *pf = ldev->pf;
 149                 struct i40e_qv_info *qv_info;
 150                 u32 reg_idx;
 151 
 152                 qv_info = &qvlist_info->qv_info[i];
 153                 if (!qv_info)
 154                         continue;
 155                 reg_idx = I40E_PFINT_LNKLSTN(qv_info->v_idx - 1);
 156                 wr32(&pf->hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
 157         }
 158         kfree(ldev->qvlist_info);
 159         ldev->qvlist_info = NULL;
 160 }
 161 
 162 /**
 163  * i40e_notify_client_of_netdev_close - call the client close callback
 164  * @vsi: the VSI with netdev closed
 165  * @reset: true when close called due to a reset pending
 166  *
 167  * If there is a client to this netdev, call the client with close
 168  **/
 169 void i40e_notify_client_of_netdev_close(struct i40e_vsi *vsi, bool reset)
 170 {
 171         struct i40e_pf *pf = vsi->back;
 172         struct i40e_client_instance *cdev = pf->cinst;
 173 
 174         if (!cdev || !cdev->client)
 175                 return;
 176         if (!cdev->client->ops || !cdev->client->ops->close) {
 177                 dev_dbg(&vsi->back->pdev->dev,
 178                         "Cannot locate client instance close routine\n");
 179                 return;
 180         }
 181         cdev->client->ops->close(&cdev->lan_info, cdev->client, reset);
 182         clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
 183         i40e_client_release_qvlist(&cdev->lan_info);
 184 }
 185 
 186 /**
 187  * i40e_notify_client_of_vf_reset - call the client vf reset callback
 188  * @pf: PF device pointer
 189  * @vf_id: asolute id of VF being reset
 190  *
 191  * If there is a client attached to this PF, notify when a VF is reset
 192  **/
 193 void i40e_notify_client_of_vf_reset(struct i40e_pf *pf, u32 vf_id)
 194 {
 195         struct i40e_client_instance *cdev = pf->cinst;
 196 
 197         if (!cdev || !cdev->client)
 198                 return;
 199         if (!cdev->client->ops || !cdev->client->ops->vf_reset) {
 200                 dev_dbg(&pf->pdev->dev,
 201                         "Cannot locate client instance VF reset routine\n");
 202                 return;
 203         }
 204         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,  &cdev->state)) {
 205                 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-reset\n");
 206                 return;
 207         }
 208         cdev->client->ops->vf_reset(&cdev->lan_info, cdev->client, vf_id);
 209 }
 210 
 211 /**
 212  * i40e_notify_client_of_vf_enable - call the client vf notification callback
 213  * @pf: PF device pointer
 214  * @num_vfs: the number of VFs currently enabled, 0 for disable
 215  *
 216  * If there is a client attached to this PF, call its VF notification routine
 217  **/
 218 void i40e_notify_client_of_vf_enable(struct i40e_pf *pf, u32 num_vfs)
 219 {
 220         struct i40e_client_instance *cdev = pf->cinst;
 221 
 222         if (!cdev || !cdev->client)
 223                 return;
 224         if (!cdev->client->ops || !cdev->client->ops->vf_enable) {
 225                 dev_dbg(&pf->pdev->dev,
 226                         "Cannot locate client instance VF enable routine\n");
 227                 return;
 228         }
 229         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
 230                       &cdev->state)) {
 231                 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-enable\n");
 232                 return;
 233         }
 234         cdev->client->ops->vf_enable(&cdev->lan_info, cdev->client, num_vfs);
 235 }
 236 
 237 /**
 238  * i40e_vf_client_capable - ask the client if it likes the specified VF
 239  * @pf: PF device pointer
 240  * @vf_id: the VF in question
 241  *
 242  * If there is a client of the specified type attached to this PF, call
 243  * its vf_capable routine
 244  **/
 245 int i40e_vf_client_capable(struct i40e_pf *pf, u32 vf_id)
 246 {
 247         struct i40e_client_instance *cdev = pf->cinst;
 248         int capable = false;
 249 
 250         if (!cdev || !cdev->client)
 251                 goto out;
 252         if (!cdev->client->ops || !cdev->client->ops->vf_capable) {
 253                 dev_dbg(&pf->pdev->dev,
 254                         "Cannot locate client instance VF capability routine\n");
 255                 goto out;
 256         }
 257         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state))
 258                 goto out;
 259 
 260         capable = cdev->client->ops->vf_capable(&cdev->lan_info,
 261                                                 cdev->client,
 262                                                 vf_id);
 263 out:
 264         return capable;
 265 }
 266 
 267 void i40e_client_update_msix_info(struct i40e_pf *pf)
 268 {
 269         struct i40e_client_instance *cdev = pf->cinst;
 270 
 271         if (!cdev || !cdev->client)
 272                 return;
 273 
 274         cdev->lan_info.msix_count = pf->num_iwarp_msix;
 275         cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector];
 276 }
 277 
 278 /**
 279  * i40e_client_add_instance - add a client instance struct to the instance list
 280  * @pf: pointer to the board struct
 281  * @client: pointer to a client struct in the client list.
 282  * @existing: if there was already an existing instance
 283  *
 284  **/
 285 static void i40e_client_add_instance(struct i40e_pf *pf)
 286 {
 287         struct i40e_client_instance *cdev = NULL;
 288         struct netdev_hw_addr *mac = NULL;
 289         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 290 
 291         if (!registered_client || pf->cinst)
 292                 return;
 293 
 294         cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
 295         if (!cdev)
 296                 return;
 297 
 298         cdev->lan_info.pf = (void *)pf;
 299         cdev->lan_info.netdev = vsi->netdev;
 300         cdev->lan_info.pcidev = pf->pdev;
 301         cdev->lan_info.fid = pf->hw.pf_id;
 302         cdev->lan_info.ftype = I40E_CLIENT_FTYPE_PF;
 303         cdev->lan_info.hw_addr = pf->hw.hw_addr;
 304         cdev->lan_info.ops = &i40e_lan_ops;
 305         cdev->lan_info.version.major = I40E_CLIENT_VERSION_MAJOR;
 306         cdev->lan_info.version.minor = I40E_CLIENT_VERSION_MINOR;
 307         cdev->lan_info.version.build = I40E_CLIENT_VERSION_BUILD;
 308         cdev->lan_info.fw_maj_ver = pf->hw.aq.fw_maj_ver;
 309         cdev->lan_info.fw_min_ver = pf->hw.aq.fw_min_ver;
 310         cdev->lan_info.fw_build = pf->hw.aq.fw_build;
 311         set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state);
 312 
 313         if (i40e_client_get_params(vsi, &cdev->lan_info.params)) {
 314                 kfree(cdev);
 315                 cdev = NULL;
 316                 return;
 317         }
 318 
 319         mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list,
 320                                struct netdev_hw_addr, list);
 321         if (mac)
 322                 ether_addr_copy(cdev->lan_info.lanmac, mac->addr);
 323         else
 324                 dev_err(&pf->pdev->dev, "MAC address list is empty!\n");
 325 
 326         cdev->client = registered_client;
 327         pf->cinst = cdev;
 328 
 329         i40e_client_update_msix_info(pf);
 330 }
 331 
 332 /**
 333  * i40e_client_del_instance - removes a client instance from the list
 334  * @pf: pointer to the board struct
 335  *
 336  **/
 337 static
 338 void i40e_client_del_instance(struct i40e_pf *pf)
 339 {
 340         kfree(pf->cinst);
 341         pf->cinst = NULL;
 342 }
 343 
 344 /**
 345  * i40e_client_subtask - client maintenance work
 346  * @pf: board private structure
 347  **/
 348 void i40e_client_subtask(struct i40e_pf *pf)
 349 {
 350         struct i40e_client *client = registered_client;
 351         struct i40e_client_instance *cdev;
 352         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 353         int ret = 0;
 354 
 355         if (!test_and_clear_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state))
 356                 return;
 357         cdev = pf->cinst;
 358 
 359         /* If we're down or resetting, just bail */
 360         if (test_bit(__I40E_DOWN, pf->state) ||
 361             test_bit(__I40E_CONFIG_BUSY, pf->state))
 362                 return;
 363 
 364         if (!client || !cdev)
 365                 return;
 366 
 367         /* Here we handle client opens. If the client is down, and
 368          * the netdev is registered, then open the client.
 369          */
 370         if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 371                 if (vsi->netdev_registered &&
 372                     client->ops && client->ops->open) {
 373                         set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
 374                         ret = client->ops->open(&cdev->lan_info, client);
 375                         if (ret) {
 376                                 /* Remove failed client instance */
 377                                 clear_bit(__I40E_CLIENT_INSTANCE_OPENED,
 378                                           &cdev->state);
 379                                 i40e_client_del_instance(pf);
 380                         }
 381                 }
 382         }
 383 
 384         /* enable/disable PE TCP_ENA flag based on netdev down/up
 385          */
 386         if (test_bit(__I40E_VSI_DOWN, vsi->state))
 387                 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
 388                                             0, 0, 0,
 389                                             I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
 390         else
 391                 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
 392                                             0, 0,
 393                                             I40E_CLIENT_VSI_FLAG_TCP_ENABLE,
 394                                             I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
 395 }
 396 
 397 /**
 398  * i40e_lan_add_device - add a lan device struct to the list of lan devices
 399  * @pf: pointer to the board struct
 400  *
 401  * Returns 0 on success or none 0 on error
 402  **/
 403 int i40e_lan_add_device(struct i40e_pf *pf)
 404 {
 405         struct i40e_device *ldev;
 406         int ret = 0;
 407 
 408         mutex_lock(&i40e_device_mutex);
 409         list_for_each_entry(ldev, &i40e_devices, list) {
 410                 if (ldev->pf == pf) {
 411                         ret = -EEXIST;
 412                         goto out;
 413                 }
 414         }
 415         ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
 416         if (!ldev) {
 417                 ret = -ENOMEM;
 418                 goto out;
 419         }
 420         ldev->pf = pf;
 421         INIT_LIST_HEAD(&ldev->list);
 422         list_add(&ldev->list, &i40e_devices);
 423         dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
 424                  pf->hw.pf_id, pf->hw.bus.bus_id,
 425                  pf->hw.bus.device, pf->hw.bus.func);
 426 
 427         /* If a client has already been registered, we need to add an instance
 428          * of it to our new LAN device.
 429          */
 430         if (registered_client)
 431                 i40e_client_add_instance(pf);
 432 
 433         /* Since in some cases register may have happened before a device gets
 434          * added, we can schedule a subtask to go initiate the clients if
 435          * they can be launched at probe time.
 436          */
 437         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
 438         i40e_service_event_schedule(pf);
 439 
 440 out:
 441         mutex_unlock(&i40e_device_mutex);
 442         return ret;
 443 }
 444 
 445 /**
 446  * i40e_lan_del_device - removes a lan device from the device list
 447  * @pf: pointer to the board struct
 448  *
 449  * Returns 0 on success or non-0 on error
 450  **/
 451 int i40e_lan_del_device(struct i40e_pf *pf)
 452 {
 453         struct i40e_device *ldev, *tmp;
 454         int ret = -ENODEV;
 455 
 456         /* First, remove any client instance. */
 457         i40e_client_del_instance(pf);
 458 
 459         mutex_lock(&i40e_device_mutex);
 460         list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) {
 461                 if (ldev->pf == pf) {
 462                         dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
 463                                  pf->hw.pf_id, pf->hw.bus.bus_id,
 464                                  pf->hw.bus.device, pf->hw.bus.func);
 465                         list_del(&ldev->list);
 466                         kfree(ldev);
 467                         ret = 0;
 468                         break;
 469                 }
 470         }
 471         mutex_unlock(&i40e_device_mutex);
 472         return ret;
 473 }
 474 
 475 /**
 476  * i40e_client_release - release client specific resources
 477  * @client: pointer to the registered client
 478  *
 479  **/
 480 static void i40e_client_release(struct i40e_client *client)
 481 {
 482         struct i40e_client_instance *cdev;
 483         struct i40e_device *ldev;
 484         struct i40e_pf *pf;
 485 
 486         mutex_lock(&i40e_device_mutex);
 487         list_for_each_entry(ldev, &i40e_devices, list) {
 488                 pf = ldev->pf;
 489                 cdev = pf->cinst;
 490                 if (!cdev)
 491                         continue;
 492 
 493                 while (test_and_set_bit(__I40E_SERVICE_SCHED,
 494                                         pf->state))
 495                         usleep_range(500, 1000);
 496 
 497                 if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
 498                         if (client->ops && client->ops->close)
 499                                 client->ops->close(&cdev->lan_info, client,
 500                                                    false);
 501                         i40e_client_release_qvlist(&cdev->lan_info);
 502                         clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
 503 
 504                         dev_warn(&pf->pdev->dev,
 505                                  "Client %s instance for PF id %d closed\n",
 506                                  client->name, pf->hw.pf_id);
 507                 }
 508                 /* delete the client instance */
 509                 i40e_client_del_instance(pf);
 510                 dev_info(&pf->pdev->dev, "Deleted client instance of Client %s\n",
 511                          client->name);
 512                 clear_bit(__I40E_SERVICE_SCHED, pf->state);
 513         }
 514         mutex_unlock(&i40e_device_mutex);
 515 }
 516 
 517 /**
 518  * i40e_client_prepare - prepare client specific resources
 519  * @client: pointer to the registered client
 520  *
 521  **/
 522 static void i40e_client_prepare(struct i40e_client *client)
 523 {
 524         struct i40e_device *ldev;
 525         struct i40e_pf *pf;
 526 
 527         mutex_lock(&i40e_device_mutex);
 528         list_for_each_entry(ldev, &i40e_devices, list) {
 529                 pf = ldev->pf;
 530                 i40e_client_add_instance(pf);
 531                 /* Start the client subtask */
 532                 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
 533                 i40e_service_event_schedule(pf);
 534         }
 535         mutex_unlock(&i40e_device_mutex);
 536 }
 537 
 538 /**
 539  * i40e_client_virtchnl_send - TBD
 540  * @ldev: pointer to L2 context
 541  * @client: Client pointer
 542  * @vf_id: absolute VF identifier
 543  * @msg: message buffer
 544  * @len: length of message buffer
 545  *
 546  * Return 0 on success or < 0 on error
 547  **/
 548 static int i40e_client_virtchnl_send(struct i40e_info *ldev,
 549                                      struct i40e_client *client,
 550                                      u32 vf_id, u8 *msg, u16 len)
 551 {
 552         struct i40e_pf *pf = ldev->pf;
 553         struct i40e_hw *hw = &pf->hw;
 554         i40e_status err;
 555 
 556         err = i40e_aq_send_msg_to_vf(hw, vf_id, VIRTCHNL_OP_IWARP,
 557                                      0, msg, len, NULL);
 558         if (err)
 559                 dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n",
 560                         err, hw->aq.asq_last_status);
 561 
 562         return err;
 563 }
 564 
 565 /**
 566  * i40e_client_setup_qvlist
 567  * @ldev: pointer to L2 context.
 568  * @client: Client pointer.
 569  * @qvlist_info: queue and vector list
 570  *
 571  * Return 0 on success or < 0 on error
 572  **/
 573 static int i40e_client_setup_qvlist(struct i40e_info *ldev,
 574                                     struct i40e_client *client,
 575                                     struct i40e_qvlist_info *qvlist_info)
 576 {
 577         struct i40e_pf *pf = ldev->pf;
 578         struct i40e_hw *hw = &pf->hw;
 579         struct i40e_qv_info *qv_info;
 580         u32 v_idx, i, reg_idx, reg;
 581 
 582         ldev->qvlist_info = kzalloc(struct_size(ldev->qvlist_info, qv_info,
 583                                     qvlist_info->num_vectors - 1), GFP_KERNEL);
 584         if (!ldev->qvlist_info)
 585                 return -ENOMEM;
 586         ldev->qvlist_info->num_vectors = qvlist_info->num_vectors;
 587 
 588         for (i = 0; i < qvlist_info->num_vectors; i++) {
 589                 qv_info = &qvlist_info->qv_info[i];
 590                 if (!qv_info)
 591                         continue;
 592                 v_idx = qv_info->v_idx;
 593 
 594                 /* Validate vector id belongs to this client */
 595                 if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) ||
 596                     (v_idx < pf->iwarp_base_vector))
 597                         goto err;
 598 
 599                 ldev->qvlist_info->qv_info[i] = *qv_info;
 600                 reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1);
 601 
 602                 if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) {
 603                         /* Special case - No CEQ mapped on this vector */
 604                         wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
 605                 } else {
 606                         reg = (qv_info->ceq_idx &
 607                                I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
 608                                (I40E_QUEUE_TYPE_PE_CEQ <<
 609                                I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
 610                         wr32(hw, reg_idx, reg);
 611 
 612                         reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK |
 613                                (v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) |
 614                                (qv_info->itr_idx <<
 615                                 I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) |
 616                                (I40E_QUEUE_END_OF_LIST <<
 617                                 I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT));
 618                         wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg);
 619                 }
 620                 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
 621                         reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK |
 622                                (v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) |
 623                                (qv_info->itr_idx <<
 624                                 I40E_PFINT_AEQCTL_ITR_INDX_SHIFT));
 625 
 626                         wr32(hw, I40E_PFINT_AEQCTL, reg);
 627                 }
 628         }
 629         /* Mitigate sync problems with iwarp VF driver */
 630         i40e_flush(hw);
 631         return 0;
 632 err:
 633         kfree(ldev->qvlist_info);
 634         ldev->qvlist_info = NULL;
 635         return -EINVAL;
 636 }
 637 
 638 /**
 639  * i40e_client_request_reset
 640  * @ldev: pointer to L2 context.
 641  * @client: Client pointer.
 642  * @reset_level: reset level
 643  **/
 644 static void i40e_client_request_reset(struct i40e_info *ldev,
 645                                       struct i40e_client *client,
 646                                       u32 reset_level)
 647 {
 648         struct i40e_pf *pf = ldev->pf;
 649 
 650         switch (reset_level) {
 651         case I40E_CLIENT_RESET_LEVEL_PF:
 652                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 653                 break;
 654         case I40E_CLIENT_RESET_LEVEL_CORE:
 655                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 656                 break;
 657         default:
 658                 dev_warn(&pf->pdev->dev,
 659                          "Client for PF id %d requested an unsupported reset: %d.\n",
 660                          pf->hw.pf_id, reset_level);
 661                 break;
 662         }
 663 
 664         i40e_service_event_schedule(pf);
 665 }
 666 
 667 /**
 668  * i40e_client_update_vsi_ctxt
 669  * @ldev: pointer to L2 context.
 670  * @client: Client pointer.
 671  * @is_vf: if this for the VF
 672  * @vf_id: if is_vf true this carries the vf_id
 673  * @flag: Any device level setting that needs to be done for PE
 674  * @valid_flag: Bits in this match up and enable changing of flag bits
 675  *
 676  * Return 0 on success or < 0 on error
 677  **/
 678 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
 679                                        struct i40e_client *client,
 680                                        bool is_vf, u32 vf_id,
 681                                        u32 flag, u32 valid_flag)
 682 {
 683         struct i40e_pf *pf = ldev->pf;
 684         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 685         struct i40e_vsi_context ctxt;
 686         bool update = true;
 687         i40e_status err;
 688 
 689         /* TODO: for now do not allow setting VF's VSI setting */
 690         if (is_vf)
 691                 return -EINVAL;
 692 
 693         ctxt.seid = pf->main_vsi_seid;
 694         ctxt.pf_num = pf->hw.pf_id;
 695         err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
 696         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
 697         if (err) {
 698                 dev_info(&pf->pdev->dev,
 699                          "couldn't get PF vsi config, err %s aq_err %s\n",
 700                          i40e_stat_str(&pf->hw, err),
 701                          i40e_aq_str(&pf->hw,
 702                                      pf->hw.aq.asq_last_status));
 703                 return -ENOENT;
 704         }
 705 
 706         if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
 707             (flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
 708                 ctxt.info.valid_sections =
 709                         cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
 710                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
 711         } else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
 712                   !(flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
 713                 ctxt.info.valid_sections =
 714                         cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
 715                 ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA;
 716         } else {
 717                 update = false;
 718                 dev_warn(&pf->pdev->dev,
 719                          "Client for PF id %d request an unsupported Config: %x.\n",
 720                          pf->hw.pf_id, flag);
 721         }
 722 
 723         if (update) {
 724                 err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
 725                 if (err) {
 726                         dev_info(&pf->pdev->dev,
 727                                  "update VSI ctxt for PE failed, err %s aq_err %s\n",
 728                                  i40e_stat_str(&pf->hw, err),
 729                                  i40e_aq_str(&pf->hw,
 730                                              pf->hw.aq.asq_last_status));
 731                 }
 732         }
 733         return err;
 734 }
 735 
 736 /**
 737  * i40e_register_client - Register a i40e client driver with the L2 driver
 738  * @client: pointer to the i40e_client struct
 739  *
 740  * Returns 0 on success or non-0 on error
 741  **/
 742 int i40e_register_client(struct i40e_client *client)
 743 {
 744         int ret = 0;
 745 
 746         if (!client) {
 747                 ret = -EIO;
 748                 goto out;
 749         }
 750 
 751         if (strlen(client->name) == 0) {
 752                 pr_info("i40e: Failed to register client with no name\n");
 753                 ret = -EIO;
 754                 goto out;
 755         }
 756 
 757         if (registered_client) {
 758                 pr_info("i40e: Client %s has already been registered!\n",
 759                         client->name);
 760                 ret = -EEXIST;
 761                 goto out;
 762         }
 763 
 764         if ((client->version.major != I40E_CLIENT_VERSION_MAJOR) ||
 765             (client->version.minor != I40E_CLIENT_VERSION_MINOR)) {
 766                 pr_info("i40e: Failed to register client %s due to mismatched client interface version\n",
 767                         client->name);
 768                 pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n",
 769                         client->version.major, client->version.minor,
 770                         client->version.build,
 771                         i40e_client_interface_version_str);
 772                 ret = -EIO;
 773                 goto out;
 774         }
 775 
 776         registered_client = client;
 777 
 778         i40e_client_prepare(client);
 779 
 780         pr_info("i40e: Registered client %s\n", client->name);
 781 out:
 782         return ret;
 783 }
 784 EXPORT_SYMBOL(i40e_register_client);
 785 
 786 /**
 787  * i40e_unregister_client - Unregister a i40e client driver with the L2 driver
 788  * @client: pointer to the i40e_client struct
 789  *
 790  * Returns 0 on success or non-0 on error
 791  **/
 792 int i40e_unregister_client(struct i40e_client *client)
 793 {
 794         int ret = 0;
 795 
 796         if (registered_client != client) {
 797                 pr_info("i40e: Client %s has not been registered\n",
 798                         client->name);
 799                 ret = -ENODEV;
 800                 goto out;
 801         }
 802         registered_client = NULL;
 803         /* When a unregister request comes through we would have to send
 804          * a close for each of the client instances that were opened.
 805          * client_release function is called to handle this.
 806          */
 807         i40e_client_release(client);
 808 
 809         pr_info("i40e: Unregistered client %s\n", client->name);
 810 out:
 811         return ret;
 812 }
 813 EXPORT_SYMBOL(i40e_unregister_client);