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