drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include "i40evf.h"
  28 #include "i40e_prototype.h"
  29
  30 /* busy wait delay in msec */
  31 #define I40EVF_BUSY_WAIT_DELAY 10
  32 #define I40EVF_BUSY_WAIT_COUNT 50
  33
  34 /**
  35  * i40evf_send_pf_msg
  36  * @adapter: adapter structure
  37  * @op: virtual channel opcode
  38  * @msg: pointer to message buffer
  39  * @len: message length
  40  *
  41  * Send message to PF and print status if failure.
  42  **/
  43 static int i40evf_send_pf_msg(struct i40evf_adapter *adapter,
  44                               enum i40e_virtchnl_ops op, u8 *msg, u16 len)
  45 {
  46         struct i40e_hw *hw = &adapter->hw;
  47         i40e_status err;
  48
  49         if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
  50                 return 0; /* nothing to see here, move along */
  51
  52         err = i40e_aq_send_msg_to_pf(hw, op, 0, msg, len, NULL);
  53         if (err)
  54                 dev_err(&adapter->pdev->dev, "Unable to send opcode %d to PF, err %s, aq_err %s\n",
  55                         op, i40evf_stat_str(hw, err),
  56                         i40evf_aq_str(hw, hw->aq.asq_last_status));
  57         return err;
  58 }
  59
  60 /**
  61  * i40evf_send_api_ver
  62  * @adapter: adapter structure
  63  *
  64  * Send API version admin queue message to the PF. The reply is not checked
  65  * in this function. Returns 0 if the message was successfully
  66  * sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
  67  **/
  68 int i40evf_send_api_ver(struct i40evf_adapter *adapter)
  69 {
  70         struct i40e_virtchnl_version_info vvi;
  71
  72         vvi.major = I40E_VIRTCHNL_VERSION_MAJOR;
  73         vvi.minor = I40E_VIRTCHNL_VERSION_MINOR;
  74
  75         return i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_VERSION, (u8 *)&vvi,
  76                                   sizeof(vvi));
  77 }
  78
  79 /**
  80  * i40evf_verify_api_ver
  81  * @adapter: adapter structure
  82  *
  83  * Compare API versions with the PF. Must be called after admin queue is
  84  * initialized. Returns 0 if API versions match, -EIO if they do not,
  85  * I40E_ERR_ADMIN_QUEUE_NO_WORK if the admin queue is empty, and any errors
  86  * from the firmware are propagated.
  87  **/
  88 int i40evf_verify_api_ver(struct i40evf_adapter *adapter)
  89 {
  90         struct i40e_virtchnl_version_info *pf_vvi;
  91         struct i40e_hw *hw = &adapter->hw;
  92         struct i40e_arq_event_info event;
  93         enum i40e_virtchnl_ops op;
  94         i40e_status err;
  95
  96         event.buf_len = I40EVF_MAX_AQ_BUF_SIZE;
  97         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
  98         if (!event.msg_buf) {
  99                 err = -ENOMEM;
 100                 goto out;
 101         }
 102
 103         while (1) {
 104                 err = i40evf_clean_arq_element(hw, &event, NULL);
 105                 /* When the AQ is empty, i40evf_clean_arq_element will return
 106                  * nonzero and this loop will terminate.
 107                  */
 108                 if (err)
 109                         goto out_alloc;
 110                 op =
 111                     (enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
 112                 if (op == I40E_VIRTCHNL_OP_VERSION)
 113                         break;
 114         }
 115
 116
 117         err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
 118         if (err)
 119                 goto out_alloc;
 120
 121         if (op != I40E_VIRTCHNL_OP_VERSION) {
 122                 dev_info(&adapter->pdev->dev, "Invalid reply type %d from PF\n",
 123                         op);
 124                 err = -EIO;
 125                 goto out_alloc;
 126         }
 127
 128         pf_vvi = (struct i40e_virtchnl_version_info *)event.msg_buf;
 129         adapter->pf_version = *pf_vvi;
 130
 131         if ((pf_vvi->major > I40E_VIRTCHNL_VERSION_MAJOR) ||
 132             ((pf_vvi->major == I40E_VIRTCHNL_VERSION_MAJOR) &&
 133              (pf_vvi->minor > I40E_VIRTCHNL_VERSION_MINOR)))
 134                 err = -EIO;
 135
 136 out_alloc:
 137         kfree(event.msg_buf);
 138 out:
 139         return err;
 140 }
 141
 142 /**
 143  * i40evf_send_vf_config_msg
 144  * @adapter: adapter structure
 145  *
 146  * Send VF configuration request admin queue message to the PF. The reply
 147  * is not checked in this function. Returns 0 if the message was
 148  * successfully sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
 149  **/
 150 int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter)
 151 {
 152         u32 caps;
 153
 154         adapter->current_op = I40E_VIRTCHNL_OP_GET_VF_RESOURCES;
 155         adapter->aq_required &= ~I40EVF_FLAG_AQ_GET_CONFIG;
 156         caps = I40E_VIRTCHNL_VF_OFFLOAD_L2 |
 157                I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ |
 158                I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG |
 159                I40E_VIRTCHNL_VF_OFFLOAD_VLAN |
 160                I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR |
 161                I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
 162
 163         adapter->current_op = I40E_VIRTCHNL_OP_GET_VF_RESOURCES;
 164         adapter->aq_required &= ~I40EVF_FLAG_AQ_GET_CONFIG;
 165         if (PF_IS_V11(adapter))
 166                 return i40evf_send_pf_msg(adapter,
 167                                           I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
 168                                           (u8 *)&caps, sizeof(caps));
 169         else
 170                 return i40evf_send_pf_msg(adapter,
 171                                           I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
 172                                           NULL, 0);
 173 }
 174
 175 /**
 176  * i40evf_get_vf_config
 177  * @hw: pointer to the hardware structure
 178  * @len: length of buffer
 179  *
 180  * Get VF configuration from PF and populate hw structure. Must be called after
 181  * admin queue is initialized. Busy waits until response is received from PF,
 182  * with maximum timeout. Response from PF is returned in the buffer for further
 183  * processing by the caller.
 184  **/
 185 int i40evf_get_vf_config(struct i40evf_adapter *adapter)
 186 {
 187         struct i40e_hw *hw = &adapter->hw;
 188         struct i40e_arq_event_info event;
 189         enum i40e_virtchnl_ops op;
 190         i40e_status err;
 191         u16 len;
 192
 193         len =  sizeof(struct i40e_virtchnl_vf_resource) +
 194                 I40E_MAX_VF_VSI * sizeof(struct i40e_virtchnl_vsi_resource);
 195         event.buf_len = len;
 196         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
 197         if (!event.msg_buf) {
 198                 err = -ENOMEM;
 199                 goto out;
 200         }
 201
 202         while (1) {
 203                 /* When the AQ is empty, i40evf_clean_arq_element will return
 204                  * nonzero and this loop will terminate.
 205                  */
 206                 err = i40evf_clean_arq_element(hw, &event, NULL);
 207                 if (err)
 208                         goto out_alloc;
 209                 op =
 210                     (enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
 211                 if (op == I40E_VIRTCHNL_OP_GET_VF_RESOURCES)
 212                         break;
 213         }
 214
 215         err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
 216         memcpy(adapter->vf_res, event.msg_buf, min(event.msg_len, len));
 217
 218         i40e_vf_parse_hw_config(hw, adapter->vf_res);
 219 out_alloc:
 220         kfree(event.msg_buf);
 221 out:
 222         return err;
 223 }
 224
 225 /**
 226  * i40evf_configure_queues
 227  * @adapter: adapter structure
 228  *
 229  * Request that the PF set up our (previously allocated) queues.
 230  **/
 231 void i40evf_configure_queues(struct i40evf_adapter *adapter)
 232 {
 233         struct i40e_virtchnl_vsi_queue_config_info *vqci;
 234         struct i40e_virtchnl_queue_pair_info *vqpi;
 235         int pairs = adapter->num_active_queues;
 236         int i, len;
 237
 238         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 239                 /* bail because we already have a command pending */
 240                 dev_err(&adapter->pdev->dev, "Cannot configure queues, command %d pending\n",
 241                         adapter->current_op);
 242                 return;
 243         }
 244         adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES;
 245         len = sizeof(struct i40e_virtchnl_vsi_queue_config_info) +
 246                        (sizeof(struct i40e_virtchnl_queue_pair_info) * pairs);
 247         vqci = kzalloc(len, GFP_KERNEL);
 248         if (!vqci)
 249                 return;
 250
 251         vqci->vsi_id = adapter->vsi_res->vsi_id;
 252         vqci->num_queue_pairs = pairs;
 253         vqpi = vqci->qpair;
 254         /* Size check is not needed here - HW max is 16 queue pairs, and we
 255          * can fit info for 31 of them into the AQ buffer before it overflows.
 256          */
 257         for (i = 0; i < pairs; i++) {
 258                 vqpi->txq.vsi_id = vqci->vsi_id;
 259                 vqpi->txq.queue_id = i;
 260                 vqpi->txq.ring_len = adapter->tx_rings[i].count;
 261                 vqpi->txq.dma_ring_addr = adapter->tx_rings[i].dma;
 262                 vqpi->txq.headwb_enabled = 1;
 263                 vqpi->txq.dma_headwb_addr = vqpi->txq.dma_ring_addr +
 264                     (vqpi->txq.ring_len * sizeof(struct i40e_tx_desc));
 265
 266                 vqpi->rxq.vsi_id = vqci->vsi_id;
 267                 vqpi->rxq.queue_id = i;
 268                 vqpi->rxq.ring_len = adapter->rx_rings[i].count;
 269                 vqpi->rxq.dma_ring_addr = adapter->rx_rings[i].dma;
 270                 vqpi->rxq.max_pkt_size = adapter->netdev->mtu
 271                                         + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
 272                 vqpi->rxq.databuffer_size = adapter->rx_rings[i].rx_buf_len;
 273                 if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) {
 274                         vqpi->rxq.splithdr_enabled = true;
 275                         vqpi->rxq.hdr_size = I40E_RX_HDR_SIZE;
 276                 }
 277                 vqpi++;
 278         }
 279
 280         adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
 281         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
 282                            (u8 *)vqci, len);
 283         kfree(vqci);
 284 }
 285
 286 /**
 287  * i40evf_enable_queues
 288  * @adapter: adapter structure
 289  *
 290  * Request that the PF enable all of our queues.
 291  **/
 292 void i40evf_enable_queues(struct i40evf_adapter *adapter)
 293 {
 294         struct i40e_virtchnl_queue_select vqs;
 295
 296         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 297                 /* bail because we already have a command pending */
 298                 dev_err(&adapter->pdev->dev, "Cannot enable queues, command %d pending\n",
 299                         adapter->current_op);
 300                 return;
 301         }
 302         adapter->current_op = I40E_VIRTCHNL_OP_ENABLE_QUEUES;
 303         vqs.vsi_id = adapter->vsi_res->vsi_id;
 304         vqs.tx_queues = BIT(adapter->num_active_queues) - 1;
 305         vqs.rx_queues = vqs.tx_queues;
 306         adapter->aq_required &= ~I40EVF_FLAG_AQ_ENABLE_QUEUES;
 307         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
 308                            (u8 *)&vqs, sizeof(vqs));
 309 }
 310
 311 /**
 312  * i40evf_disable_queues
 313  * @adapter: adapter structure
 314  *
 315  * Request that the PF disable all of our queues.
 316  **/
 317 void i40evf_disable_queues(struct i40evf_adapter *adapter)
 318 {
 319         struct i40e_virtchnl_queue_select vqs;
 320
 321         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 322                 /* bail because we already have a command pending */
 323                 dev_err(&adapter->pdev->dev, "Cannot disable queues, command %d pending\n",
 324                         adapter->current_op);
 325                 return;
 326         }
 327         adapter->current_op = I40E_VIRTCHNL_OP_DISABLE_QUEUES;
 328         vqs.vsi_id = adapter->vsi_res->vsi_id;
 329         vqs.tx_queues = BIT(adapter->num_active_queues) - 1;
 330         vqs.rx_queues = vqs.tx_queues;
 331         adapter->aq_required &= ~I40EVF_FLAG_AQ_DISABLE_QUEUES;
 332         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
 333                            (u8 *)&vqs, sizeof(vqs));
 334 }
 335
 336 /**
 337  * i40evf_map_queues
 338  * @adapter: adapter structure
 339  *
 340  * Request that the PF map queues to interrupt vectors. Misc causes, including
 341  * admin queue, are always mapped to vector 0.
 342  **/
 343 void i40evf_map_queues(struct i40evf_adapter *adapter)
 344 {
 345         struct i40e_virtchnl_irq_map_info *vimi;
 346         int v_idx, q_vectors, len;
 347         struct i40e_q_vector *q_vector;
 348
 349         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 350                 /* bail because we already have a command pending */
 351                 dev_err(&adapter->pdev->dev, "Cannot map queues to vectors, command %d pending\n",
 352                         adapter->current_op);
 353                 return;
 354         }
 355         adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP;
 356
 357         q_vectors = adapter->num_msix_vectors - NONQ_VECS;
 358
 359         len = sizeof(struct i40e_virtchnl_irq_map_info) +
 360               (adapter->num_msix_vectors *
 361                 sizeof(struct i40e_virtchnl_vector_map));
 362         vimi = kzalloc(len, GFP_KERNEL);
 363         if (!vimi)
 364                 return;
 365
 366         vimi->num_vectors = adapter->num_msix_vectors;
 367         /* Queue vectors first */
 368         for (v_idx = 0; v_idx < q_vectors; v_idx++) {
 369                 q_vector = adapter->q_vectors + v_idx;
 370                 vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
 371                 vimi->vecmap[v_idx].vector_id = v_idx + NONQ_VECS;
 372                 vimi->vecmap[v_idx].txq_map = q_vector->ring_mask;
 373                 vimi->vecmap[v_idx].rxq_map = q_vector->ring_mask;
 374         }
 375         /* Misc vector last - this is only for AdminQ messages */
 376         vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
 377         vimi->vecmap[v_idx].vector_id = 0;
 378         vimi->vecmap[v_idx].txq_map = 0;
 379         vimi->vecmap[v_idx].rxq_map = 0;
 380
 381         adapter->aq_required &= ~I40EVF_FLAG_AQ_MAP_VECTORS;
 382         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
 383                            (u8 *)vimi, len);
 384         kfree(vimi);
 385 }
 386
 387 /**
 388  * i40evf_add_ether_addrs
 389  * @adapter: adapter structure
 390  * @addrs: the MAC address filters to add (contiguous)
 391  * @count: number of filters
 392  *
 393  * Request that the PF add one or more addresses to our filters.
 394  **/
 395 void i40evf_add_ether_addrs(struct i40evf_adapter *adapter)
 396 {
 397         struct i40e_virtchnl_ether_addr_list *veal;
 398         int len, i = 0, count = 0;
 399         struct i40evf_mac_filter *f;
 400         bool more = false;
 401
 402         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 403                 /* bail because we already have a command pending */
 404                 dev_err(&adapter->pdev->dev, "Cannot add filters, command %d pending\n",
 405                         adapter->current_op);
 406                 return;
 407         }
 408         list_for_each_entry(f, &adapter->mac_filter_list, list) {
 409                 if (f->add)
 410                         count++;
 411         }
 412         if (!count) {
 413                 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
 414                 return;
 415         }
 416         adapter->current_op = I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS;
 417
 418         len = sizeof(struct i40e_virtchnl_ether_addr_list) +
 419               (count * sizeof(struct i40e_virtchnl_ether_addr));
 420         if (len > I40EVF_MAX_AQ_BUF_SIZE) {
 421                 dev_warn(&adapter->pdev->dev, "Too many add MAC changes in one request\n");
 422                 count = (I40EVF_MAX_AQ_BUF_SIZE -
 423                          sizeof(struct i40e_virtchnl_ether_addr_list)) /
 424                         sizeof(struct i40e_virtchnl_ether_addr);
 425                 len = sizeof(struct i40e_virtchnl_ether_addr_list) +
 426                       (count * sizeof(struct i40e_virtchnl_ether_addr));
 427                 more = true;
 428         }
 429
 430         veal = kzalloc(len, GFP_KERNEL);
 431         if (!veal)
 432                 return;
 433
 434         veal->vsi_id = adapter->vsi_res->vsi_id;
 435         veal->num_elements = count;
 436         list_for_each_entry(f, &adapter->mac_filter_list, list) {
 437                 if (f->add) {
 438                         ether_addr_copy(veal->list[i].addr, f->macaddr);
 439                         i++;
 440                         f->add = false;
 441                 }
 442         }
 443         if (!more)
 444                 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
 445         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
 446                            (u8 *)veal, len);
 447         kfree(veal);
 448 }
 449
 450 /**
 451  * i40evf_del_ether_addrs
 452  * @adapter: adapter structure
 453  * @addrs: the MAC address filters to remove (contiguous)
 454  * @count: number of filtes
 455  *
 456  * Request that the PF remove one or more addresses from our filters.
 457  **/
 458 void i40evf_del_ether_addrs(struct i40evf_adapter *adapter)
 459 {
 460         struct i40e_virtchnl_ether_addr_list *veal;
 461         struct i40evf_mac_filter *f, *ftmp;
 462         int len, i = 0, count = 0;
 463         bool more = false;
 464
 465         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 466                 /* bail because we already have a command pending */
 467                 dev_err(&adapter->pdev->dev, "Cannot remove filters, command %d pending\n",
 468                         adapter->current_op);
 469                 return;
 470         }
 471         list_for_each_entry(f, &adapter->mac_filter_list, list) {
 472                 if (f->remove)
 473                         count++;
 474         }
 475         if (!count) {
 476                 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
 477                 return;
 478         }
 479         adapter->current_op = I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS;
 480
 481         len = sizeof(struct i40e_virtchnl_ether_addr_list) +
 482               (count * sizeof(struct i40e_virtchnl_ether_addr));
 483         if (len > I40EVF_MAX_AQ_BUF_SIZE) {
 484                 dev_warn(&adapter->pdev->dev, "Too many delete MAC changes in one request\n");
 485                 count = (I40EVF_MAX_AQ_BUF_SIZE -
 486                          sizeof(struct i40e_virtchnl_ether_addr_list)) /
 487                         sizeof(struct i40e_virtchnl_ether_addr);
 488                 len = sizeof(struct i40e_virtchnl_ether_addr_list) +
 489                       (count * sizeof(struct i40e_virtchnl_ether_addr));
 490                 more = true;
 491         }
 492         veal = kzalloc(len, GFP_KERNEL);
 493         if (!veal)
 494                 return;
 495
 496         veal->vsi_id = adapter->vsi_res->vsi_id;
 497         veal->num_elements = count;
 498         list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
 499                 if (f->remove) {
 500                         ether_addr_copy(veal->list[i].addr, f->macaddr);
 501                         i++;
 502                         list_del(&f->list);
 503                         kfree(f);
 504                 }
 505         }
 506         if (!more)
 507                 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
 508         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
 509                            (u8 *)veal, len);
 510         kfree(veal);
 511 }
 512
 513 /**
 514  * i40evf_add_vlans
 515  * @adapter: adapter structure
 516  * @vlans: the VLANs to add
 517  * @count: number of VLANs
 518  *
 519  * Request that the PF add one or more VLAN filters to our VSI.
 520  **/
 521 void i40evf_add_vlans(struct i40evf_adapter *adapter)
 522 {
 523         struct i40e_virtchnl_vlan_filter_list *vvfl;
 524         int len, i = 0, count = 0;
 525         struct i40evf_vlan_filter *f;
 526         bool more = false;
 527
 528         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 529                 /* bail because we already have a command pending */
 530                 dev_err(&adapter->pdev->dev, "Cannot add VLANs, command %d pending\n",
 531                         adapter->current_op);
 532                 return;
 533         }
 534
 535         list_for_each_entry(f, &adapter->vlan_filter_list, list) {
 536                 if (f->add)
 537                         count++;
 538         }
 539         if (!count) {
 540                 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
 541                 return;
 542         }
 543         adapter->current_op = I40E_VIRTCHNL_OP_ADD_VLAN;
 544
 545         len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
 546               (count * sizeof(u16));
 547         if (len > I40EVF_MAX_AQ_BUF_SIZE) {
 548                 dev_warn(&adapter->pdev->dev, "Too many add VLAN changes in one request\n");
 549                 count = (I40EVF_MAX_AQ_BUF_SIZE -
 550                          sizeof(struct i40e_virtchnl_vlan_filter_list)) /
 551                         sizeof(u16);
 552                 len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
 553                       (count * sizeof(u16));
 554                 more = true;
 555         }
 556         vvfl = kzalloc(len, GFP_KERNEL);
 557         if (!vvfl)
 558                 return;
 559
 560         vvfl->vsi_id = adapter->vsi_res->vsi_id;
 561         vvfl->num_elements = count;
 562         list_for_each_entry(f, &adapter->vlan_filter_list, list) {
 563                 if (f->add) {
 564                         vvfl->vlan_id[i] = f->vlan;
 565                         i++;
 566                         f->add = false;
 567                 }
 568         }
 569         if (!more)
 570                 adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
 571         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len);
 572         kfree(vvfl);
 573 }
 574
 575 /**
 576  * i40evf_del_vlans
 577  * @adapter: adapter structure
 578  * @vlans: the VLANs to remove
 579  * @count: number of VLANs
 580  *
 581  * Request that the PF remove one or more VLAN filters from our VSI.
 582  **/
 583 void i40evf_del_vlans(struct i40evf_adapter *adapter)
 584 {
 585         struct i40e_virtchnl_vlan_filter_list *vvfl;
 586         struct i40evf_vlan_filter *f, *ftmp;
 587         int len, i = 0, count = 0;
 588         bool more = false;
 589
 590         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 591                 /* bail because we already have a command pending */
 592                 dev_err(&adapter->pdev->dev, "Cannot remove VLANs, command %d pending\n",
 593                         adapter->current_op);
 594                 return;
 595         }
 596
 597         list_for_each_entry(f, &adapter->vlan_filter_list, list) {
 598                 if (f->remove)
 599                         count++;
 600         }
 601         if (!count) {
 602                 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
 603                 return;
 604         }
 605         adapter->current_op = I40E_VIRTCHNL_OP_DEL_VLAN;
 606
 607         len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
 608               (count * sizeof(u16));
 609         if (len > I40EVF_MAX_AQ_BUF_SIZE) {
 610                 dev_warn(&adapter->pdev->dev, "Too many delete VLAN changes in one request\n");
 611                 count = (I40EVF_MAX_AQ_BUF_SIZE -
 612                          sizeof(struct i40e_virtchnl_vlan_filter_list)) /
 613                         sizeof(u16);
 614                 len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
 615                       (count * sizeof(u16));
 616                 more = true;
 617         }
 618         vvfl = kzalloc(len, GFP_KERNEL);
 619         if (!vvfl)
 620                 return;
 621
 622         vvfl->vsi_id = adapter->vsi_res->vsi_id;
 623         vvfl->num_elements = count;
 624         list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
 625                 if (f->remove) {
 626                         vvfl->vlan_id[i] = f->vlan;
 627                         i++;
 628                         list_del(&f->list);
 629                         kfree(f);
 630                 }
 631         }
 632         if (!more)
 633                 adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
 634         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_VLAN, (u8 *)vvfl, len);
 635         kfree(vvfl);
 636 }
 637
 638 /**
 639  * i40evf_set_promiscuous
 640  * @adapter: adapter structure
 641  * @flags: bitmask to control unicast/multicast promiscuous.
 642  *
 643  * Request that the PF enable promiscuous mode for our VSI.
 644  **/
 645 void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags)
 646 {
 647         struct i40e_virtchnl_promisc_info vpi;
 648
 649         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 650                 /* bail because we already have a command pending */
 651                 dev_err(&adapter->pdev->dev, "Cannot set promiscuous mode, command %d pending\n",
 652                         adapter->current_op);
 653                 return;
 654         }
 655         adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE;
 656         vpi.vsi_id = adapter->vsi_res->vsi_id;
 657         vpi.flags = flags;
 658         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
 659                            (u8 *)&vpi, sizeof(vpi));
 660 }
 661
 662 /**
 663  * i40evf_request_stats
 664  * @adapter: adapter structure
 665  *
 666  * Request VSI statistics from PF.
 667  **/
 668 void i40evf_request_stats(struct i40evf_adapter *adapter)
 669 {
 670         struct i40e_virtchnl_queue_select vqs;
 671
 672         if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
 673                 /* no error message, this isn't crucial */
 674                 return;
 675         }
 676         adapter->current_op = I40E_VIRTCHNL_OP_GET_STATS;
 677         vqs.vsi_id = adapter->vsi_res->vsi_id;
 678         /* queue maps are ignored for this message - only the vsi is used */
 679         if (i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_GET_STATS,
 680                                (u8 *)&vqs, sizeof(vqs)))
 681                 /* if the request failed, don't lock out others */
 682                 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
 683 }
 684 /**
 685  * i40evf_request_reset
 686  * @adapter: adapter structure
 687  *
 688  * Request that the PF reset this VF. No response is expected.
 689  **/
 690 void i40evf_request_reset(struct i40evf_adapter *adapter)
 691 {
 692         /* Don't check CURRENT_OP - this is always higher priority */
 693         i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_RESET_VF, NULL, 0);
 694         adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
 695 }
 696
 697 /**
 698  * i40evf_virtchnl_completion
 699  * @adapter: adapter structure
 700  * @v_opcode: opcode sent by PF
 701  * @v_retval: retval sent by PF
 702  * @msg: message sent by PF
 703  * @msglen: message length
 704  *
 705  * Asynchronous completion function for admin queue messages. Rather than busy
 706  * wait, we fire off our requests and assume that no errors will be returned.
 707  * This function handles the reply messages.
 708  **/
 709 void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
 710                                 enum i40e_virtchnl_ops v_opcode,
 711                                 i40e_status v_retval,
 712                                 u8 *msg, u16 msglen)
 713 {
 714         struct net_device *netdev = adapter->netdev;
 715
 716         if (v_opcode == I40E_VIRTCHNL_OP_EVENT) {
 717                 struct i40e_virtchnl_pf_event *vpe =
 718                         (struct i40e_virtchnl_pf_event *)msg;
 719                 switch (vpe->event) {
 720                 case I40E_VIRTCHNL_EVENT_LINK_CHANGE:
 721                         adapter->link_up =
 722                                 vpe->event_data.link_event.link_status;
 723                         if (adapter->link_up && !netif_carrier_ok(netdev)) {
 724                                 dev_info(&adapter->pdev->dev, "NIC Link is Up\n");
 725                                 netif_carrier_on(netdev);
 726                                 netif_tx_wake_all_queues(netdev);
 727                         } else if (!adapter->link_up) {
 728                                 dev_info(&adapter->pdev->dev, "NIC Link is Down\n");
 729                                 netif_carrier_off(netdev);
 730                                 netif_tx_stop_all_queues(netdev);
 731                         }
 732                         break;
 733                 case I40E_VIRTCHNL_EVENT_RESET_IMPENDING:
 734                         dev_info(&adapter->pdev->dev, "PF reset warning received\n");
 735                         if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) {
 736                                 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
 737                                 dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
 738                                 schedule_work(&adapter->reset_task);
 739                         }
 740                         break;
 741                 default:
 742                         dev_err(&adapter->pdev->dev, "Unknown event %d from PF\n",
 743                                 vpe->event);
 744                         break;
 745                 }
 746                 return;
 747         }
 748         if (v_retval) {
 749                 switch (v_opcode) {
 750                 case I40E_VIRTCHNL_OP_ADD_VLAN:
 751                         dev_err(&adapter->pdev->dev, "Failed to add VLAN filter, error %s\n",
 752                                 i40evf_stat_str(&adapter->hw, v_retval));
 753                         break;
 754                 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
 755                         dev_err(&adapter->pdev->dev, "Failed to add MAC filter, error %s\n",
 756                                 i40evf_stat_str(&adapter->hw, v_retval));
 757                         break;
 758                 case I40E_VIRTCHNL_OP_DEL_VLAN:
 759                         dev_err(&adapter->pdev->dev, "Failed to delete VLAN filter, error %s\n",
 760                                 i40evf_stat_str(&adapter->hw, v_retval));
 761                         break;
 762                 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
 763                         dev_err(&adapter->pdev->dev, "Failed to delete MAC filter, error %s\n",
 764                                 i40evf_stat_str(&adapter->hw, v_retval));
 765                         break;
 766                 default:
 767                         dev_err(&adapter->pdev->dev, "PF returned error %d (%s) to our request %d\n",
 768                                 v_retval,
 769                                 i40evf_stat_str(&adapter->hw, v_retval),
 770                                 v_opcode);
 771                 }
 772         }
 773         switch (v_opcode) {
 774         case I40E_VIRTCHNL_OP_GET_STATS: {
 775                 struct i40e_eth_stats *stats =
 776                         (struct i40e_eth_stats *)msg;
 777                 adapter->net_stats.rx_packets = stats->rx_unicast +
 778                                                  stats->rx_multicast +
 779                                                  stats->rx_broadcast;
 780                 adapter->net_stats.tx_packets = stats->tx_unicast +
 781                                                  stats->tx_multicast +
 782                                                  stats->tx_broadcast;
 783                 adapter->net_stats.rx_bytes = stats->rx_bytes;
 784                 adapter->net_stats.tx_bytes = stats->tx_bytes;
 785                 adapter->net_stats.tx_errors = stats->tx_errors;
 786                 adapter->net_stats.rx_dropped = stats->rx_discards;
 787                 adapter->net_stats.tx_dropped = stats->tx_discards;
 788                 adapter->current_stats = *stats;
 789                 }
 790                 break;
 791         case I40E_VIRTCHNL_OP_GET_VF_RESOURCES: {
 792                 u16 len = sizeof(struct i40e_virtchnl_vf_resource) +
 793                           I40E_MAX_VF_VSI *
 794                           sizeof(struct i40e_virtchnl_vsi_resource);
 795                 memcpy(adapter->vf_res, msg, min(msglen, len));
 796                 i40e_vf_parse_hw_config(&adapter->hw, adapter->vf_res);
 797                 /* restore current mac address */
 798                 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
 799                 i40evf_process_config(adapter);
 800                 }
 801                 break;
 802         case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
 803                 /* enable transmits */
 804                 i40evf_irq_enable(adapter, true);
 805                 netif_tx_start_all_queues(adapter->netdev);
 806                 netif_carrier_on(adapter->netdev);
 807                 break;
 808         case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
 809                 i40evf_free_all_tx_resources(adapter);
 810                 i40evf_free_all_rx_resources(adapter);
 811                 if (adapter->state == __I40EVF_DOWN_PENDING)
 812                         adapter->state = __I40EVF_DOWN;
 813                 break;
 814         case I40E_VIRTCHNL_OP_VERSION:
 815         case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
 816                 /* Don't display an error if we get these out of sequence.
 817                  * If the firmware needed to get kicked, we'll get these and
 818                  * it's no problem.
 819                  */
 820                 if (v_opcode != adapter->current_op)
 821                         return;
 822                 break;
 823         default:
 824                 if (v_opcode != adapter->current_op)
 825                         dev_warn(&adapter->pdev->dev, "Expected response %d from PF, received %d\n",
 826                                  adapter->current_op, v_opcode);
 827                 break;
 828         } /* switch v_opcode */
 829         adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
 830 }