drivers/net/ethernet/intel/i40e/i40e_ethtool.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux 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 /* ethtool support for i40e */
  28
  29 #include "i40e.h"
  30 #include "i40e_diag.h"
  31
  32 struct i40e_stats {
  33         char stat_string[ETH_GSTRING_LEN];
  34         int sizeof_stat;
  35         int stat_offset;
  36 };
  37
  38 #define I40E_STAT(_type, _name, _stat) { \
  39         .stat_string = _name, \
  40         .sizeof_stat = FIELD_SIZEOF(_type, _stat), \
  41         .stat_offset = offsetof(_type, _stat) \
  42 }
  43 #define I40E_NETDEV_STAT(_net_stat) \
  44                 I40E_STAT(struct net_device_stats, #_net_stat, _net_stat)
  45 #define I40E_PF_STAT(_name, _stat) \
  46                 I40E_STAT(struct i40e_pf, _name, _stat)
  47 #define I40E_VSI_STAT(_name, _stat) \
  48                 I40E_STAT(struct i40e_vsi, _name, _stat)
  49
  50 static const struct i40e_stats i40e_gstrings_net_stats[] = {
  51         I40E_NETDEV_STAT(rx_packets),
  52         I40E_NETDEV_STAT(tx_packets),
  53         I40E_NETDEV_STAT(rx_bytes),
  54         I40E_NETDEV_STAT(tx_bytes),
  55         I40E_NETDEV_STAT(rx_errors),
  56         I40E_NETDEV_STAT(tx_errors),
  57         I40E_NETDEV_STAT(rx_dropped),
  58         I40E_NETDEV_STAT(tx_dropped),
  59         I40E_NETDEV_STAT(multicast),
  60         I40E_NETDEV_STAT(collisions),
  61         I40E_NETDEV_STAT(rx_length_errors),
  62         I40E_NETDEV_STAT(rx_crc_errors),
  63 };
  64
  65 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
  66                                  struct ethtool_rxnfc *cmd);
  67
  68 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
  69  * but they are separate.  This device supports Virtualization, and
  70  * as such might have several netdevs supporting VMDq and FCoE going
  71  * through a single port.  The NETDEV_STATs are for individual netdevs
  72  * seen at the top of the stack, and the PF_STATs are for the physical
  73  * function at the bottom of the stack hosting those netdevs.
  74  *
  75  * The PF_STATs are appended to the netdev stats only when ethtool -S
  76  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
  77  */
  78 static struct i40e_stats i40e_gstrings_stats[] = {
  79         I40E_PF_STAT("rx_bytes", stats.eth.rx_bytes),
  80         I40E_PF_STAT("tx_bytes", stats.eth.tx_bytes),
  81         I40E_PF_STAT("rx_errors", stats.eth.rx_errors),
  82         I40E_PF_STAT("tx_errors", stats.eth.tx_errors),
  83         I40E_PF_STAT("rx_dropped", stats.eth.rx_discards),
  84         I40E_PF_STAT("tx_dropped", stats.eth.tx_discards),
  85         I40E_PF_STAT("tx_dropped_link_down", stats.tx_dropped_link_down),
  86         I40E_PF_STAT("crc_errors", stats.crc_errors),
  87         I40E_PF_STAT("illegal_bytes", stats.illegal_bytes),
  88         I40E_PF_STAT("mac_local_faults", stats.mac_local_faults),
  89         I40E_PF_STAT("mac_remote_faults", stats.mac_remote_faults),
  90         I40E_PF_STAT("tx_timeout", tx_timeout_count),
  91         I40E_PF_STAT("rx_length_errors", stats.rx_length_errors),
  92         I40E_PF_STAT("link_xon_rx", stats.link_xon_rx),
  93         I40E_PF_STAT("link_xoff_rx", stats.link_xoff_rx),
  94         I40E_PF_STAT("link_xon_tx", stats.link_xon_tx),
  95         I40E_PF_STAT("link_xoff_tx", stats.link_xoff_tx),
  96         I40E_PF_STAT("rx_size_64", stats.rx_size_64),
  97         I40E_PF_STAT("rx_size_127", stats.rx_size_127),
  98         I40E_PF_STAT("rx_size_255", stats.rx_size_255),
  99         I40E_PF_STAT("rx_size_511", stats.rx_size_511),
 100         I40E_PF_STAT("rx_size_1023", stats.rx_size_1023),
 101         I40E_PF_STAT("rx_size_1522", stats.rx_size_1522),
 102         I40E_PF_STAT("rx_size_big", stats.rx_size_big),
 103         I40E_PF_STAT("tx_size_64", stats.tx_size_64),
 104         I40E_PF_STAT("tx_size_127", stats.tx_size_127),
 105         I40E_PF_STAT("tx_size_255", stats.tx_size_255),
 106         I40E_PF_STAT("tx_size_511", stats.tx_size_511),
 107         I40E_PF_STAT("tx_size_1023", stats.tx_size_1023),
 108         I40E_PF_STAT("tx_size_1522", stats.tx_size_1522),
 109         I40E_PF_STAT("tx_size_big", stats.tx_size_big),
 110         I40E_PF_STAT("rx_undersize", stats.rx_undersize),
 111         I40E_PF_STAT("rx_fragments", stats.rx_fragments),
 112         I40E_PF_STAT("rx_oversize", stats.rx_oversize),
 113         I40E_PF_STAT("rx_jabber", stats.rx_jabber),
 114         I40E_PF_STAT("VF_admin_queue_requests", vf_aq_requests),
 115         I40E_PF_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
 116         I40E_PF_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
 117         /* LPI stats */
 118         I40E_PF_STAT("tx_lpi_status", stats.tx_lpi_status),
 119         I40E_PF_STAT("rx_lpi_status", stats.rx_lpi_status),
 120         I40E_PF_STAT("tx_lpi_count", stats.tx_lpi_count),
 121         I40E_PF_STAT("rx_lpi_count", stats.rx_lpi_count),
 122 };
 123
 124 #define I40E_QUEUE_STATS_LEN(n) \
 125   ((((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs + \
 126     ((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs) * 2)
 127 #define I40E_GLOBAL_STATS_LEN   ARRAY_SIZE(i40e_gstrings_stats)
 128 #define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
 129 #define I40E_VSI_STATS_LEN(n)   (I40E_NETDEV_STATS_LEN + \
 130                                  I40E_QUEUE_STATS_LEN((n)))
 131 #define I40E_PFC_STATS_LEN ( \
 132                 (FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_rx) + \
 133                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_rx) + \
 134                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_tx) + \
 135                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_tx) + \
 136                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_2_xoff)) \
 137                  / sizeof(u64))
 138 #define I40E_PF_STATS_LEN(n)    (I40E_GLOBAL_STATS_LEN + \
 139                                  I40E_PFC_STATS_LEN + \
 140                                  I40E_VSI_STATS_LEN((n)))
 141
 142 enum i40e_ethtool_test_id {
 143         I40E_ETH_TEST_REG = 0,
 144         I40E_ETH_TEST_EEPROM,
 145         I40E_ETH_TEST_INTR,
 146         I40E_ETH_TEST_LOOPBACK,
 147         I40E_ETH_TEST_LINK,
 148 };
 149
 150 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
 151         "Register test  (offline)",
 152         "Eeprom test    (offline)",
 153         "Interrupt test (offline)",
 154         "Loopback test  (offline)",
 155         "Link test   (on/offline)"
 156 };
 157
 158 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
 159
 160 /**
 161  * i40e_get_settings - Get Link Speed and Duplex settings
 162  * @netdev: network interface device structure
 163  * @ecmd: ethtool command
 164  *
 165  * Reports speed/duplex settings based on media_type
 166  **/
 167 static int i40e_get_settings(struct net_device *netdev,
 168                              struct ethtool_cmd *ecmd)
 169 {
 170         struct i40e_netdev_priv *np = netdev_priv(netdev);
 171         struct i40e_pf *pf = np->vsi->back;
 172         struct i40e_hw *hw = &pf->hw;
 173         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 174         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
 175         u32 link_speed = hw_link_info->link_speed;
 176
 177         /* hardware is either in 40G mode or 10G mode
 178          * NOTE: this section initializes supported and advertising
 179          */
 180         switch (hw_link_info->phy_type) {
 181         case I40E_PHY_TYPE_40GBASE_CR4:
 182         case I40E_PHY_TYPE_40GBASE_CR4_CU:
 183                 ecmd->supported = SUPPORTED_40000baseCR4_Full;
 184                 ecmd->advertising = ADVERTISED_40000baseCR4_Full;
 185                 break;
 186         case I40E_PHY_TYPE_40GBASE_KR4:
 187                 ecmd->supported = SUPPORTED_40000baseKR4_Full;
 188                 ecmd->advertising = ADVERTISED_40000baseKR4_Full;
 189                 break;
 190         case I40E_PHY_TYPE_40GBASE_SR4:
 191                 ecmd->supported = SUPPORTED_40000baseSR4_Full;
 192                 ecmd->advertising = ADVERTISED_40000baseSR4_Full;
 193                 break;
 194         case I40E_PHY_TYPE_40GBASE_LR4:
 195                 ecmd->supported = SUPPORTED_40000baseLR4_Full;
 196                 ecmd->advertising = ADVERTISED_40000baseLR4_Full;
 197                 break;
 198         case I40E_PHY_TYPE_10GBASE_KX4:
 199                 ecmd->supported = SUPPORTED_10000baseKX4_Full;
 200                 ecmd->advertising = ADVERTISED_10000baseKX4_Full;
 201                 break;
 202         case I40E_PHY_TYPE_10GBASE_KR:
 203                 ecmd->supported = SUPPORTED_10000baseKR_Full;
 204                 ecmd->advertising = ADVERTISED_10000baseKR_Full;
 205                 break;
 206         default:
 207                 if (i40e_is_40G_device(hw->device_id)) {
 208                         ecmd->supported = SUPPORTED_40000baseSR4_Full;
 209                         ecmd->advertising = ADVERTISED_40000baseSR4_Full;
 210                 } else {
 211                         ecmd->supported = SUPPORTED_10000baseT_Full;
 212                         ecmd->advertising = ADVERTISED_10000baseT_Full;
 213                 }
 214                 break;
 215         }
 216
 217         ecmd->supported |= SUPPORTED_Autoneg;
 218         ecmd->advertising |= ADVERTISED_Autoneg;
 219         ecmd->autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 220                           AUTONEG_ENABLE : AUTONEG_DISABLE);
 221
 222         switch (hw->phy.media_type) {
 223         case I40E_MEDIA_TYPE_BACKPLANE:
 224                 ecmd->supported |= SUPPORTED_Backplane;
 225                 ecmd->advertising |= ADVERTISED_Backplane;
 226                 ecmd->port = PORT_NONE;
 227                 break;
 228         case I40E_MEDIA_TYPE_BASET:
 229                 ecmd->supported |= SUPPORTED_TP;
 230                 ecmd->advertising |= ADVERTISED_TP;
 231                 ecmd->port = PORT_TP;
 232                 break;
 233         case I40E_MEDIA_TYPE_DA:
 234         case I40E_MEDIA_TYPE_CX4:
 235                 ecmd->supported |= SUPPORTED_FIBRE;
 236                 ecmd->advertising |= ADVERTISED_FIBRE;
 237                 ecmd->port = PORT_DA;
 238                 break;
 239         case I40E_MEDIA_TYPE_FIBER:
 240                 ecmd->supported |= SUPPORTED_FIBRE;
 241                 ecmd->advertising |= ADVERTISED_FIBRE;
 242                 ecmd->port = PORT_FIBRE;
 243                 break;
 244         case I40E_MEDIA_TYPE_UNKNOWN:
 245         default:
 246                 ecmd->port = PORT_OTHER;
 247                 break;
 248         }
 249
 250         ecmd->transceiver = XCVR_EXTERNAL;
 251
 252         if (link_up) {
 253                 switch (link_speed) {
 254                 case I40E_LINK_SPEED_40GB:
 255                         /* need a SPEED_40000 in ethtool.h */
 256                         ethtool_cmd_speed_set(ecmd, 40000);
 257                         break;
 258                 case I40E_LINK_SPEED_10GB:
 259                         ethtool_cmd_speed_set(ecmd, SPEED_10000);
 260                         break;
 261                 default:
 262                         break;
 263                 }
 264                 ecmd->duplex = DUPLEX_FULL;
 265         } else {
 266                 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
 267                 ecmd->duplex = DUPLEX_UNKNOWN;
 268         }
 269
 270         return 0;
 271 }
 272
 273 /**
 274  * i40e_get_pauseparam -  Get Flow Control status
 275  * Return tx/rx-pause status
 276  **/
 277 static void i40e_get_pauseparam(struct net_device *netdev,
 278                                 struct ethtool_pauseparam *pause)
 279 {
 280         struct i40e_netdev_priv *np = netdev_priv(netdev);
 281         struct i40e_pf *pf = np->vsi->back;
 282         struct i40e_hw *hw = &pf->hw;
 283         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 284
 285         pause->autoneg =
 286                 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 287                   AUTONEG_ENABLE : AUTONEG_DISABLE);
 288
 289         if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
 290                 pause->rx_pause = 1;
 291         } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
 292                 pause->tx_pause = 1;
 293         } else if (hw->fc.current_mode == I40E_FC_FULL) {
 294                 pause->rx_pause = 1;
 295                 pause->tx_pause = 1;
 296         }
 297 }
 298
 299 static u32 i40e_get_msglevel(struct net_device *netdev)
 300 {
 301         struct i40e_netdev_priv *np = netdev_priv(netdev);
 302         struct i40e_pf *pf = np->vsi->back;
 303
 304         return pf->msg_enable;
 305 }
 306
 307 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
 308 {
 309         struct i40e_netdev_priv *np = netdev_priv(netdev);
 310         struct i40e_pf *pf = np->vsi->back;
 311
 312         if (I40E_DEBUG_USER & data)
 313                 pf->hw.debug_mask = data;
 314         pf->msg_enable = data;
 315 }
 316
 317 static int i40e_get_regs_len(struct net_device *netdev)
 318 {
 319         int reg_count = 0;
 320         int i;
 321
 322         for (i = 0; i40e_reg_list[i].offset != 0; i++)
 323                 reg_count += i40e_reg_list[i].elements;
 324
 325         return reg_count * sizeof(u32);
 326 }
 327
 328 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
 329                           void *p)
 330 {
 331         struct i40e_netdev_priv *np = netdev_priv(netdev);
 332         struct i40e_pf *pf = np->vsi->back;
 333         struct i40e_hw *hw = &pf->hw;
 334         u32 *reg_buf = p;
 335         int i, j, ri;
 336         u32 reg;
 337
 338         /* Tell ethtool which driver-version-specific regs output we have.
 339          *
 340          * At some point, if we have ethtool doing special formatting of
 341          * this data, it will rely on this version number to know how to
 342          * interpret things.  Hence, this needs to be updated if/when the
 343          * diags register table is changed.
 344          */
 345         regs->version = 1;
 346
 347         /* loop through the diags reg table for what to print */
 348         ri = 0;
 349         for (i = 0; i40e_reg_list[i].offset != 0; i++) {
 350                 for (j = 0; j < i40e_reg_list[i].elements; j++) {
 351                         reg = i40e_reg_list[i].offset
 352                                 + (j * i40e_reg_list[i].stride);
 353                         reg_buf[ri++] = rd32(hw, reg);
 354                 }
 355         }
 356
 357 }
 358
 359 static int i40e_get_eeprom(struct net_device *netdev,
 360                            struct ethtool_eeprom *eeprom, u8 *bytes)
 361 {
 362         struct i40e_netdev_priv *np = netdev_priv(netdev);
 363         struct i40e_hw *hw = &np->vsi->back->hw;
 364         struct i40e_pf *pf = np->vsi->back;
 365         int ret_val = 0, len;
 366         u8 *eeprom_buff;
 367         u16 i, sectors;
 368         bool last;
 369 #define I40E_NVM_SECTOR_SIZE  4096
 370         if (eeprom->len == 0)
 371                 return -EINVAL;
 372
 373         eeprom->magic = hw->vendor_id | (hw->device_id << 16);
 374
 375         eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
 376         if (!eeprom_buff)
 377                 return -ENOMEM;
 378
 379         ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
 380         if (ret_val) {
 381                 dev_info(&pf->pdev->dev,
 382                          "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
 383                          ret_val, hw->aq.asq_last_status);
 384                 goto free_buff;
 385         }
 386
 387         sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
 388         sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
 389         len = I40E_NVM_SECTOR_SIZE;
 390         last = false;
 391         for (i = 0; i < sectors; i++) {
 392                 if (i == (sectors - 1)) {
 393                         len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
 394                         last = true;
 395                 }
 396                 ret_val = i40e_aq_read_nvm(hw, 0x0,
 397                                 eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
 398                                 len,
 399                                 eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
 400                                 last, NULL);
 401                 if (ret_val) {
 402                         dev_info(&pf->pdev->dev,
 403                                  "read NVM failed err=%d status=0x%x\n",
 404                                  ret_val, hw->aq.asq_last_status);
 405                         goto release_nvm;
 406                 }
 407         }
 408
 409 release_nvm:
 410         i40e_release_nvm(hw);
 411         memcpy(bytes, eeprom_buff, eeprom->len);
 412 free_buff:
 413         kfree(eeprom_buff);
 414         return ret_val;
 415 }
 416
 417 static int i40e_get_eeprom_len(struct net_device *netdev)
 418 {
 419         struct i40e_netdev_priv *np = netdev_priv(netdev);
 420         struct i40e_hw *hw = &np->vsi->back->hw;
 421         u32 val;
 422
 423         val = (rd32(hw, I40E_GLPCI_LBARCTRL)
 424                 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
 425                 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
 426         /* register returns value in power of 2, 64Kbyte chunks. */
 427         val = (64 * 1024) * (1 << val);
 428         return val;
 429 }
 430
 431 static void i40e_get_drvinfo(struct net_device *netdev,
 432                              struct ethtool_drvinfo *drvinfo)
 433 {
 434         struct i40e_netdev_priv *np = netdev_priv(netdev);
 435         struct i40e_vsi *vsi = np->vsi;
 436         struct i40e_pf *pf = vsi->back;
 437
 438         strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
 439         strlcpy(drvinfo->version, i40e_driver_version_str,
 440                 sizeof(drvinfo->version));
 441         strlcpy(drvinfo->fw_version, i40e_fw_version_str(&pf->hw),
 442                 sizeof(drvinfo->fw_version));
 443         strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
 444                 sizeof(drvinfo->bus_info));
 445 }
 446
 447 static void i40e_get_ringparam(struct net_device *netdev,
 448                                struct ethtool_ringparam *ring)
 449 {
 450         struct i40e_netdev_priv *np = netdev_priv(netdev);
 451         struct i40e_pf *pf = np->vsi->back;
 452         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 453
 454         ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
 455         ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
 456         ring->rx_mini_max_pending = 0;
 457         ring->rx_jumbo_max_pending = 0;
 458         ring->rx_pending = vsi->rx_rings[0]->count;
 459         ring->tx_pending = vsi->tx_rings[0]->count;
 460         ring->rx_mini_pending = 0;
 461         ring->rx_jumbo_pending = 0;
 462 }
 463
 464 static int i40e_set_ringparam(struct net_device *netdev,
 465                               struct ethtool_ringparam *ring)
 466 {
 467         struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
 468         struct i40e_netdev_priv *np = netdev_priv(netdev);
 469         struct i40e_vsi *vsi = np->vsi;
 470         struct i40e_pf *pf = vsi->back;
 471         u32 new_rx_count, new_tx_count;
 472         int i, err = 0;
 473
 474         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 475                 return -EINVAL;
 476
 477         if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
 478             ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
 479             ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
 480             ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
 481                 netdev_info(netdev,
 482                             "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
 483                             ring->tx_pending, ring->rx_pending,
 484                             I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
 485                 return -EINVAL;
 486         }
 487
 488         new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
 489         new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
 490
 491         /* if nothing to do return success */
 492         if ((new_tx_count == vsi->tx_rings[0]->count) &&
 493             (new_rx_count == vsi->rx_rings[0]->count))
 494                 return 0;
 495
 496         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
 497                 usleep_range(1000, 2000);
 498
 499         if (!netif_running(vsi->netdev)) {
 500                 /* simple case - set for the next time the netdev is started */
 501                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 502                         vsi->tx_rings[i]->count = new_tx_count;
 503                         vsi->rx_rings[i]->count = new_rx_count;
 504                 }
 505                 goto done;
 506         }
 507
 508         /* We can't just free everything and then setup again,
 509          * because the ISRs in MSI-X mode get passed pointers
 510          * to the Tx and Rx ring structs.
 511          */
 512
 513         /* alloc updated Tx resources */
 514         if (new_tx_count != vsi->tx_rings[0]->count) {
 515                 netdev_info(netdev,
 516                             "Changing Tx descriptor count from %d to %d.\n",
 517                             vsi->tx_rings[0]->count, new_tx_count);
 518                 tx_rings = kcalloc(vsi->alloc_queue_pairs,
 519                                    sizeof(struct i40e_ring), GFP_KERNEL);
 520                 if (!tx_rings) {
 521                         err = -ENOMEM;
 522                         goto done;
 523                 }
 524
 525                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 526                         /* clone ring and setup updated count */
 527                         tx_rings[i] = *vsi->tx_rings[i];
 528                         tx_rings[i].count = new_tx_count;
 529                         err = i40e_setup_tx_descriptors(&tx_rings[i]);
 530                         if (err) {
 531                                 while (i) {
 532                                         i--;
 533                                         i40e_free_tx_resources(&tx_rings[i]);
 534                                 }
 535                                 kfree(tx_rings);
 536                                 tx_rings = NULL;
 537
 538                                 goto done;
 539                         }
 540                 }
 541         }
 542
 543         /* alloc updated Rx resources */
 544         if (new_rx_count != vsi->rx_rings[0]->count) {
 545                 netdev_info(netdev,
 546                             "Changing Rx descriptor count from %d to %d\n",
 547                             vsi->rx_rings[0]->count, new_rx_count);
 548                 rx_rings = kcalloc(vsi->alloc_queue_pairs,
 549                                    sizeof(struct i40e_ring), GFP_KERNEL);
 550                 if (!rx_rings) {
 551                         err = -ENOMEM;
 552                         goto free_tx;
 553                 }
 554
 555                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 556                         /* clone ring and setup updated count */
 557                         rx_rings[i] = *vsi->rx_rings[i];
 558                         rx_rings[i].count = new_rx_count;
 559                         err = i40e_setup_rx_descriptors(&rx_rings[i]);
 560                         if (err) {
 561                                 while (i) {
 562                                         i--;
 563                                         i40e_free_rx_resources(&rx_rings[i]);
 564                                 }
 565                                 kfree(rx_rings);
 566                                 rx_rings = NULL;
 567
 568                                 goto free_tx;
 569                         }
 570                 }
 571         }
 572
 573         /* Bring interface down, copy in the new ring info,
 574          * then restore the interface
 575          */
 576         i40e_down(vsi);
 577
 578         if (tx_rings) {
 579                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 580                         i40e_free_tx_resources(vsi->tx_rings[i]);
 581                         *vsi->tx_rings[i] = tx_rings[i];
 582                 }
 583                 kfree(tx_rings);
 584                 tx_rings = NULL;
 585         }
 586
 587         if (rx_rings) {
 588                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 589                         i40e_free_rx_resources(vsi->rx_rings[i]);
 590                         *vsi->rx_rings[i] = rx_rings[i];
 591                 }
 592                 kfree(rx_rings);
 593                 rx_rings = NULL;
 594         }
 595
 596         i40e_up(vsi);
 597
 598 free_tx:
 599         /* error cleanup if the Rx allocations failed after getting Tx */
 600         if (tx_rings) {
 601                 for (i = 0; i < vsi->num_queue_pairs; i++)
 602                         i40e_free_tx_resources(&tx_rings[i]);
 603                 kfree(tx_rings);
 604                 tx_rings = NULL;
 605         }
 606
 607 done:
 608         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
 609
 610         return err;
 611 }
 612
 613 static int i40e_get_sset_count(struct net_device *netdev, int sset)
 614 {
 615         struct i40e_netdev_priv *np = netdev_priv(netdev);
 616         struct i40e_vsi *vsi = np->vsi;
 617         struct i40e_pf *pf = vsi->back;
 618
 619         switch (sset) {
 620         case ETH_SS_TEST:
 621                 return I40E_TEST_LEN;
 622         case ETH_SS_STATS:
 623                 if (vsi == pf->vsi[pf->lan_vsi])
 624                         return I40E_PF_STATS_LEN(netdev);
 625                 else
 626                         return I40E_VSI_STATS_LEN(netdev);
 627         default:
 628                 return -EOPNOTSUPP;
 629         }
 630 }
 631
 632 static void i40e_get_ethtool_stats(struct net_device *netdev,
 633                                    struct ethtool_stats *stats, u64 *data)
 634 {
 635         struct i40e_netdev_priv *np = netdev_priv(netdev);
 636         struct i40e_vsi *vsi = np->vsi;
 637         struct i40e_pf *pf = vsi->back;
 638         int i = 0;
 639         char *p;
 640         int j;
 641         struct rtnl_link_stats64 *net_stats = i40e_get_vsi_stats_struct(vsi);
 642         unsigned int start;
 643
 644         i40e_update_stats(vsi);
 645
 646         for (j = 0; j < I40E_NETDEV_STATS_LEN; j++) {
 647                 p = (char *)net_stats + i40e_gstrings_net_stats[j].stat_offset;
 648                 data[i++] = (i40e_gstrings_net_stats[j].sizeof_stat ==
 649                         sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 650         }
 651         rcu_read_lock();
 652         for (j = 0; j < vsi->num_queue_pairs; j++, i += 4) {
 653                 struct i40e_ring *tx_ring = ACCESS_ONCE(vsi->tx_rings[j]);
 654                 struct i40e_ring *rx_ring;
 655
 656                 if (!tx_ring)
 657                         continue;
 658
 659                 /* process Tx ring statistics */
 660                 do {
 661                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 662                         data[i] = tx_ring->stats.packets;
 663                         data[i + 1] = tx_ring->stats.bytes;
 664                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 665
 666                 /* Rx ring is the 2nd half of the queue pair */
 667                 rx_ring = &tx_ring[1];
 668                 do {
 669                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 670                         data[i + 2] = rx_ring->stats.packets;
 671                         data[i + 3] = rx_ring->stats.bytes;
 672                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 673         }
 674         rcu_read_unlock();
 675         if (vsi == pf->vsi[pf->lan_vsi]) {
 676                 for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) {
 677                         p = (char *)pf + i40e_gstrings_stats[j].stat_offset;
 678                         data[i++] = (i40e_gstrings_stats[j].sizeof_stat ==
 679                                    sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 680                 }
 681                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
 682                         data[i++] = pf->stats.priority_xon_tx[j];
 683                         data[i++] = pf->stats.priority_xoff_tx[j];
 684                 }
 685                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
 686                         data[i++] = pf->stats.priority_xon_rx[j];
 687                         data[i++] = pf->stats.priority_xoff_rx[j];
 688                 }
 689                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++)
 690                         data[i++] = pf->stats.priority_xon_2_xoff[j];
 691         }
 692 }
 693
 694 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
 695                              u8 *data)
 696 {
 697         struct i40e_netdev_priv *np = netdev_priv(netdev);
 698         struct i40e_vsi *vsi = np->vsi;
 699         struct i40e_pf *pf = vsi->back;
 700         char *p = (char *)data;
 701         int i;
 702
 703         switch (stringset) {
 704         case ETH_SS_TEST:
 705                 for (i = 0; i < I40E_TEST_LEN; i++) {
 706                         memcpy(data, i40e_gstrings_test[i], ETH_GSTRING_LEN);
 707                         data += ETH_GSTRING_LEN;
 708                 }
 709                 break;
 710         case ETH_SS_STATS:
 711                 for (i = 0; i < I40E_NETDEV_STATS_LEN; i++) {
 712                         snprintf(p, ETH_GSTRING_LEN, "%s",
 713                                  i40e_gstrings_net_stats[i].stat_string);
 714                         p += ETH_GSTRING_LEN;
 715                 }
 716                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 717                         snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_packets", i);
 718                         p += ETH_GSTRING_LEN;
 719                         snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_bytes", i);
 720                         p += ETH_GSTRING_LEN;
 721                         snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_packets", i);
 722                         p += ETH_GSTRING_LEN;
 723                         snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_bytes", i);
 724                         p += ETH_GSTRING_LEN;
 725                 }
 726                 if (vsi == pf->vsi[pf->lan_vsi]) {
 727                         for (i = 0; i < I40E_GLOBAL_STATS_LEN; i++) {
 728                                 snprintf(p, ETH_GSTRING_LEN, "port.%s",
 729                                          i40e_gstrings_stats[i].stat_string);
 730                                 p += ETH_GSTRING_LEN;
 731                         }
 732                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 733                                 snprintf(p, ETH_GSTRING_LEN,
 734                                          "port.tx_priority_%u_xon", i);
 735                                 p += ETH_GSTRING_LEN;
 736                                 snprintf(p, ETH_GSTRING_LEN,
 737                                          "port.tx_priority_%u_xoff", i);
 738                                 p += ETH_GSTRING_LEN;
 739                         }
 740                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 741                                 snprintf(p, ETH_GSTRING_LEN,
 742                                          "port.rx_priority_%u_xon", i);
 743                                 p += ETH_GSTRING_LEN;
 744                                 snprintf(p, ETH_GSTRING_LEN,
 745                                          "port.rx_priority_%u_xoff", i);
 746                                 p += ETH_GSTRING_LEN;
 747                         }
 748                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 749                                 snprintf(p, ETH_GSTRING_LEN,
 750                                          "port.rx_priority_%u_xon_2_xoff", i);
 751                                 p += ETH_GSTRING_LEN;
 752                         }
 753                 }
 754                 /* BUG_ON(p - data != I40E_STATS_LEN * ETH_GSTRING_LEN); */
 755                 break;
 756         }
 757 }
 758
 759 static int i40e_get_ts_info(struct net_device *dev,
 760                             struct ethtool_ts_info *info)
 761 {
 762         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
 763
 764         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
 765                                 SOF_TIMESTAMPING_RX_SOFTWARE |
 766                                 SOF_TIMESTAMPING_SOFTWARE |
 767                                 SOF_TIMESTAMPING_TX_HARDWARE |
 768                                 SOF_TIMESTAMPING_RX_HARDWARE |
 769                                 SOF_TIMESTAMPING_RAW_HARDWARE;
 770
 771         if (pf->ptp_clock)
 772                 info->phc_index = ptp_clock_index(pf->ptp_clock);
 773         else
 774                 info->phc_index = -1;
 775
 776         info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
 777
 778         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
 779                            (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
 780                            (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
 781                            (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
 782                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
 783                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
 784                            (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
 785                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
 786                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
 787                            (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
 788                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
 789                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
 790
 791         return 0;
 792 }
 793
 794 static int i40e_link_test(struct net_device *netdev, u64 *data)
 795 {
 796         struct i40e_netdev_priv *np = netdev_priv(netdev);
 797         struct i40e_pf *pf = np->vsi->back;
 798
 799         netif_info(pf, hw, netdev, "link test\n");
 800         if (i40e_get_link_status(&pf->hw))
 801                 *data = 0;
 802         else
 803                 *data = 1;
 804
 805         return *data;
 806 }
 807
 808 static int i40e_reg_test(struct net_device *netdev, u64 *data)
 809 {
 810         struct i40e_netdev_priv *np = netdev_priv(netdev);
 811         struct i40e_pf *pf = np->vsi->back;
 812
 813         netif_info(pf, hw, netdev, "register test\n");
 814         *data = i40e_diag_reg_test(&pf->hw);
 815
 816         return *data;
 817 }
 818
 819 static int i40e_eeprom_test(struct net_device *netdev, u64 *data)
 820 {
 821         struct i40e_netdev_priv *np = netdev_priv(netdev);
 822         struct i40e_pf *pf = np->vsi->back;
 823
 824         netif_info(pf, hw, netdev, "eeprom test\n");
 825         *data = i40e_diag_eeprom_test(&pf->hw);
 826
 827         return *data;
 828 }
 829
 830 static int i40e_intr_test(struct net_device *netdev, u64 *data)
 831 {
 832         struct i40e_netdev_priv *np = netdev_priv(netdev);
 833         struct i40e_pf *pf = np->vsi->back;
 834         u16 swc_old = pf->sw_int_count;
 835
 836         netif_info(pf, hw, netdev, "interrupt test\n");
 837         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
 838              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
 839               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
 840         usleep_range(1000, 2000);
 841         *data = (swc_old == pf->sw_int_count);
 842
 843         return *data;
 844 }
 845
 846 static int i40e_loopback_test(struct net_device *netdev, u64 *data)
 847 {
 848         struct i40e_netdev_priv *np = netdev_priv(netdev);
 849         struct i40e_pf *pf = np->vsi->back;
 850
 851         netif_info(pf, hw, netdev, "loopback test not implemented\n");
 852         *data = 0;
 853
 854         return *data;
 855 }
 856
 857 static void i40e_diag_test(struct net_device *netdev,
 858                            struct ethtool_test *eth_test, u64 *data)
 859 {
 860         struct i40e_netdev_priv *np = netdev_priv(netdev);
 861         struct i40e_pf *pf = np->vsi->back;
 862
 863         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
 864                 /* Offline tests */
 865                 netif_info(pf, drv, netdev, "offline testing starting\n");
 866
 867                 set_bit(__I40E_TESTING, &pf->state);
 868
 869                 /* Link test performed before hardware reset
 870                  * so autoneg doesn't interfere with test result
 871                  */
 872                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
 873                         eth_test->flags |= ETH_TEST_FL_FAILED;
 874
 875                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
 876                         eth_test->flags |= ETH_TEST_FL_FAILED;
 877
 878                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
 879                         eth_test->flags |= ETH_TEST_FL_FAILED;
 880
 881                 if (i40e_loopback_test(netdev, &data[I40E_ETH_TEST_LOOPBACK]))
 882                         eth_test->flags |= ETH_TEST_FL_FAILED;
 883
 884                 /* run reg test last, a reset is required after it */
 885                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
 886                         eth_test->flags |= ETH_TEST_FL_FAILED;
 887
 888                 clear_bit(__I40E_TESTING, &pf->state);
 889                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
 890         } else {
 891                 /* Online tests */
 892                 netif_info(pf, drv, netdev, "online testing starting\n");
 893
 894                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
 895                         eth_test->flags |= ETH_TEST_FL_FAILED;
 896
 897                 /* Offline only tests, not run in online; pass by default */
 898                 data[I40E_ETH_TEST_REG] = 0;
 899                 data[I40E_ETH_TEST_EEPROM] = 0;
 900                 data[I40E_ETH_TEST_INTR] = 0;
 901                 data[I40E_ETH_TEST_LOOPBACK] = 0;
 902         }
 903
 904         netif_info(pf, drv, netdev, "testing finished\n");
 905 }
 906
 907 static void i40e_get_wol(struct net_device *netdev,
 908                          struct ethtool_wolinfo *wol)
 909 {
 910         struct i40e_netdev_priv *np = netdev_priv(netdev);
 911         struct i40e_pf *pf = np->vsi->back;
 912         struct i40e_hw *hw = &pf->hw;
 913         u16 wol_nvm_bits;
 914
 915         /* NVM bit on means WoL disabled for the port */
 916         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
 917         if ((1 << hw->port) & wol_nvm_bits) {
 918                 wol->supported = 0;
 919                 wol->wolopts = 0;
 920         } else {
 921                 wol->supported = WAKE_MAGIC;
 922                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
 923         }
 924 }
 925
 926 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 927 {
 928         struct i40e_netdev_priv *np = netdev_priv(netdev);
 929         struct i40e_pf *pf = np->vsi->back;
 930         struct i40e_hw *hw = &pf->hw;
 931         u16 wol_nvm_bits;
 932
 933         /* NVM bit on means WoL disabled for the port */
 934         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
 935         if (((1 << hw->port) & wol_nvm_bits))
 936                 return -EOPNOTSUPP;
 937
 938         /* only magic packet is supported */
 939         if (wol->wolopts && (wol->wolopts != WAKE_MAGIC))
 940                 return -EOPNOTSUPP;
 941
 942         /* is this a new value? */
 943         if (pf->wol_en != !!wol->wolopts) {
 944                 pf->wol_en = !!wol->wolopts;
 945                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
 946         }
 947
 948         return 0;
 949 }
 950
 951 static int i40e_nway_reset(struct net_device *netdev)
 952 {
 953         /* restart autonegotiation */
 954         struct i40e_netdev_priv *np = netdev_priv(netdev);
 955         struct i40e_pf *pf = np->vsi->back;
 956         struct i40e_hw *hw = &pf->hw;
 957         i40e_status ret = 0;
 958
 959         ret = i40e_aq_set_link_restart_an(hw, NULL);
 960         if (ret) {
 961                 netdev_info(netdev, "link restart failed, aq_err=%d\n",
 962                             pf->hw.aq.asq_last_status);
 963                 return -EIO;
 964         }
 965
 966         return 0;
 967 }
 968
 969 static int i40e_set_phys_id(struct net_device *netdev,
 970                             enum ethtool_phys_id_state state)
 971 {
 972         struct i40e_netdev_priv *np = netdev_priv(netdev);
 973         struct i40e_pf *pf = np->vsi->back;
 974         struct i40e_hw *hw = &pf->hw;
 975         int blink_freq = 2;
 976
 977         switch (state) {
 978         case ETHTOOL_ID_ACTIVE:
 979                 pf->led_status = i40e_led_get(hw);
 980                 return blink_freq;
 981         case ETHTOOL_ID_ON:
 982                 i40e_led_set(hw, 0xF, false);
 983                 break;
 984         case ETHTOOL_ID_OFF:
 985                 i40e_led_set(hw, 0x0, false);
 986                 break;
 987         case ETHTOOL_ID_INACTIVE:
 988                 i40e_led_set(hw, pf->led_status, false);
 989                 break;
 990         }
 991
 992         return 0;
 993 }
 994
 995 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
 996  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
 997  * 125us (8000 interrupts per second) == ITR(62)
 998  */
 999
1000 static int i40e_get_coalesce(struct net_device *netdev,
1001                              struct ethtool_coalesce *ec)
1002 {
1003         struct i40e_netdev_priv *np = netdev_priv(netdev);
1004         struct i40e_vsi *vsi = np->vsi;
1005
1006         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
1007         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
1008
1009         if (ITR_IS_DYNAMIC(vsi->rx_itr_setting))
1010                 ec->rx_coalesce_usecs = 1;
1011         else
1012                 ec->rx_coalesce_usecs = vsi->rx_itr_setting;
1013
1014         if (ITR_IS_DYNAMIC(vsi->tx_itr_setting))
1015                 ec->tx_coalesce_usecs = 1;
1016         else
1017                 ec->tx_coalesce_usecs = vsi->tx_itr_setting;
1018
1019         return 0;
1020 }
1021
1022 static int i40e_set_coalesce(struct net_device *netdev,
1023                              struct ethtool_coalesce *ec)
1024 {
1025         struct i40e_netdev_priv *np = netdev_priv(netdev);
1026         struct i40e_q_vector *q_vector;
1027         struct i40e_vsi *vsi = np->vsi;
1028         struct i40e_pf *pf = vsi->back;
1029         struct i40e_hw *hw = &pf->hw;
1030         u16 vector;
1031         int i;
1032
1033         if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
1034                 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
1035
1036         switch (ec->rx_coalesce_usecs) {
1037         case 0:
1038                 vsi->rx_itr_setting = 0;
1039                 break;
1040         case 1:
1041                 vsi->rx_itr_setting = (I40E_ITR_DYNAMIC |
1042                                        ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
1043                 break;
1044         default:
1045                 if ((ec->rx_coalesce_usecs < (I40E_MIN_ITR << 1)) ||
1046                     (ec->rx_coalesce_usecs > (I40E_MAX_ITR << 1)))
1047                         return -EINVAL;
1048                 vsi->rx_itr_setting = ec->rx_coalesce_usecs;
1049                 break;
1050         }
1051
1052         switch (ec->tx_coalesce_usecs) {
1053         case 0:
1054                 vsi->tx_itr_setting = 0;
1055                 break;
1056         case 1:
1057                 vsi->tx_itr_setting = (I40E_ITR_DYNAMIC |
1058                                        ITR_REG_TO_USEC(I40E_ITR_TX_DEF));
1059                 break;
1060         default:
1061                 if ((ec->tx_coalesce_usecs < (I40E_MIN_ITR << 1)) ||
1062                     (ec->tx_coalesce_usecs > (I40E_MAX_ITR << 1)))
1063                         return -EINVAL;
1064                 vsi->tx_itr_setting = ec->tx_coalesce_usecs;
1065                 break;
1066         }
1067
1068         vector = vsi->base_vector;
1069         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
1070                 q_vector = vsi->q_vectors[i];
1071                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
1072                 wr32(hw, I40E_PFINT_ITRN(0, vector - 1), q_vector->rx.itr);
1073                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
1074                 wr32(hw, I40E_PFINT_ITRN(1, vector - 1), q_vector->tx.itr);
1075                 i40e_flush(hw);
1076         }
1077
1078         return 0;
1079 }
1080
1081 /**
1082  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
1083  * @pf: pointer to the physical function struct
1084  * @cmd: ethtool rxnfc command
1085  *
1086  * Returns Success if the flow is supported, else Invalid Input.
1087  **/
1088 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
1089 {
1090         cmd->data = 0;
1091
1092         /* Report default options for RSS on i40e */
1093         switch (cmd->flow_type) {
1094         case TCP_V4_FLOW:
1095         case UDP_V4_FLOW:
1096                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1097         /* fall through to add IP fields */
1098         case SCTP_V4_FLOW:
1099         case AH_ESP_V4_FLOW:
1100         case AH_V4_FLOW:
1101         case ESP_V4_FLOW:
1102         case IPV4_FLOW:
1103                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1104                 break;
1105         case TCP_V6_FLOW:
1106         case UDP_V6_FLOW:
1107                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1108         /* fall through to add IP fields */
1109         case SCTP_V6_FLOW:
1110         case AH_ESP_V6_FLOW:
1111         case AH_V6_FLOW:
1112         case ESP_V6_FLOW:
1113         case IPV6_FLOW:
1114                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1115                 break;
1116         default:
1117                 return -EINVAL;
1118         }
1119
1120         return 0;
1121 }
1122
1123 /**
1124  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
1125  * @pf: Pointer to the physical function struct
1126  * @cmd: The command to get or set Rx flow classification rules
1127  * @rule_locs: Array of used rule locations
1128  *
1129  * This function populates both the total and actual rule count of
1130  * the ethtool flow classification command
1131  *
1132  * Returns 0 on success or -EMSGSIZE if entry not found
1133  **/
1134 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
1135                                      struct ethtool_rxnfc *cmd,
1136                                      u32 *rule_locs)
1137 {
1138         struct i40e_fdir_filter *rule;
1139         struct hlist_node *node2;
1140         int cnt = 0;
1141
1142         /* report total rule count */
1143         cmd->data = pf->hw.fdir_shared_filter_count +
1144                     pf->fdir_pf_filter_count;
1145
1146         hlist_for_each_entry_safe(rule, node2,
1147                                   &pf->fdir_filter_list, fdir_node) {
1148                 if (cnt == cmd->rule_cnt)
1149                         return -EMSGSIZE;
1150
1151                 rule_locs[cnt] = rule->fd_id;
1152                 cnt++;
1153         }
1154
1155         cmd->rule_cnt = cnt;
1156
1157         return 0;
1158 }
1159
1160 /**
1161  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
1162  * @pf: Pointer to the physical function struct
1163  * @cmd: The command to get or set Rx flow classification rules
1164  *
1165  * This function looks up a filter based on the Rx flow classification
1166  * command and fills the flow spec info for it if found
1167  *
1168  * Returns 0 on success or -EINVAL if filter not found
1169  **/
1170 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
1171                                        struct ethtool_rxnfc *cmd)
1172 {
1173         struct ethtool_rx_flow_spec *fsp =
1174                         (struct ethtool_rx_flow_spec *)&cmd->fs;
1175         struct i40e_fdir_filter *rule = NULL;
1176         struct hlist_node *node2;
1177
1178         /* report total rule count */
1179         cmd->data = pf->hw.fdir_shared_filter_count +
1180                     pf->fdir_pf_filter_count;
1181
1182         hlist_for_each_entry_safe(rule, node2,
1183                                   &pf->fdir_filter_list, fdir_node) {
1184                 if (fsp->location <= rule->fd_id)
1185                         break;
1186         }
1187
1188         if (!rule || fsp->location != rule->fd_id)
1189                 return -EINVAL;
1190
1191         fsp->flow_type = rule->flow_type;
1192         fsp->h_u.tcp_ip4_spec.psrc = rule->src_port;
1193         fsp->h_u.tcp_ip4_spec.pdst = rule->dst_port;
1194         fsp->h_u.tcp_ip4_spec.ip4src = rule->src_ip[0];
1195         fsp->h_u.tcp_ip4_spec.ip4dst = rule->dst_ip[0];
1196         fsp->ring_cookie = rule->q_index;
1197
1198         return 0;
1199 }
1200
1201 /**
1202  * i40e_get_rxnfc - command to get RX flow classification rules
1203  * @netdev: network interface device structure
1204  * @cmd: ethtool rxnfc command
1205  *
1206  * Returns Success if the command is supported.
1207  **/
1208 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
1209                           u32 *rule_locs)
1210 {
1211         struct i40e_netdev_priv *np = netdev_priv(netdev);
1212         struct i40e_vsi *vsi = np->vsi;
1213         struct i40e_pf *pf = vsi->back;
1214         int ret = -EOPNOTSUPP;
1215
1216         switch (cmd->cmd) {
1217         case ETHTOOL_GRXRINGS:
1218                 cmd->data = vsi->alloc_queue_pairs;
1219                 ret = 0;
1220                 break;
1221         case ETHTOOL_GRXFH:
1222                 ret = i40e_get_rss_hash_opts(pf, cmd);
1223                 break;
1224         case ETHTOOL_GRXCLSRLCNT:
1225                 cmd->rule_cnt = pf->fdir_pf_active_filters;
1226                 ret = 0;
1227                 break;
1228         case ETHTOOL_GRXCLSRULE:
1229                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
1230                 break;
1231         case ETHTOOL_GRXCLSRLALL:
1232                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
1233                 break;
1234         default:
1235                 break;
1236         }
1237
1238         return ret;
1239 }
1240
1241 /**
1242  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
1243  * @pf: pointer to the physical function struct
1244  * @cmd: ethtool rxnfc command
1245  *
1246  * Returns Success if the flow input set is supported.
1247  **/
1248 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
1249 {
1250         struct i40e_hw *hw = &pf->hw;
1251         u64 hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
1252                    ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
1253
1254         /* RSS does not support anything other than hashing
1255          * to queues on src and dst IPs and ports
1256          */
1257         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
1258                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
1259                 return -EINVAL;
1260
1261         /* We need at least the IP SRC and DEST fields for hashing */
1262         if (!(nfc->data & RXH_IP_SRC) ||
1263             !(nfc->data & RXH_IP_DST))
1264                 return -EINVAL;
1265
1266         switch (nfc->flow_type) {
1267         case TCP_V4_FLOW:
1268                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1269                 case 0:
1270                         hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1271                         break;
1272                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1273                         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1274                         break;
1275                 default:
1276                         return -EINVAL;
1277                 }
1278                 break;
1279         case TCP_V6_FLOW:
1280                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1281                 case 0:
1282                         hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1283                         break;
1284                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1285                         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1286                         break;
1287                 default:
1288                         return -EINVAL;
1289                 }
1290                 break;
1291         case UDP_V4_FLOW:
1292                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1293                 case 0:
1294                         hena &=
1295                         ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
1296                         ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
1297                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1298                         break;
1299                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1300                         hena |=
1301                         (((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP)  |
1302                         ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
1303                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1304                         break;
1305                 default:
1306                         return -EINVAL;
1307                 }
1308                 break;
1309         case UDP_V6_FLOW:
1310                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1311                 case 0:
1312                         hena &=
1313                         ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
1314                         ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
1315                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1316                         break;
1317                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1318                         hena |=
1319                         (((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP)  |
1320                         ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
1321                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1322                         break;
1323                 default:
1324                         return -EINVAL;
1325                 }
1326                 break;
1327         case AH_ESP_V4_FLOW:
1328         case AH_V4_FLOW:
1329         case ESP_V4_FLOW:
1330         case SCTP_V4_FLOW:
1331                 if ((nfc->data & RXH_L4_B_0_1) ||
1332                     (nfc->data & RXH_L4_B_2_3))
1333                         return -EINVAL;
1334                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
1335                 break;
1336         case AH_ESP_V6_FLOW:
1337         case AH_V6_FLOW:
1338         case ESP_V6_FLOW:
1339         case SCTP_V6_FLOW:
1340                 if ((nfc->data & RXH_L4_B_0_1) ||
1341                     (nfc->data & RXH_L4_B_2_3))
1342                         return -EINVAL;
1343                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
1344                 break;
1345         case IPV4_FLOW:
1346                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
1347                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4);
1348                 break;
1349         case IPV6_FLOW:
1350                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
1351                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6);
1352                 break;
1353         default:
1354                 return -EINVAL;
1355         }
1356
1357         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
1358         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
1359         i40e_flush(hw);
1360
1361         return 0;
1362 }
1363
1364 /**
1365  * i40e_match_fdir_input_set - Match a new filter against an existing one
1366  * @rule: The filter already added
1367  * @input: The new filter to comapre against
1368  *
1369  * Returns true if the two input set match
1370  **/
1371 static bool i40e_match_fdir_input_set(struct i40e_fdir_filter *rule,
1372                                       struct i40e_fdir_filter *input)
1373 {
1374         if ((rule->dst_ip[0] != input->dst_ip[0]) ||
1375             (rule->src_ip[0] != input->src_ip[0]) ||
1376             (rule->dst_port != input->dst_port) ||
1377             (rule->src_port != input->src_port))
1378                 return false;
1379         return true;
1380 }
1381
1382 /**
1383  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
1384  * @vsi: Pointer to the targeted VSI
1385  * @input: The filter to update or NULL to indicate deletion
1386  * @sw_idx: Software index to the filter
1387  * @cmd: The command to get or set Rx flow classification rules
1388  *
1389  * This function updates (or deletes) a Flow Director entry from
1390  * the hlist of the corresponding PF
1391  *
1392  * Returns 0 on success
1393  **/
1394 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
1395                                           struct i40e_fdir_filter *input,
1396                                           u16 sw_idx,
1397                                           struct ethtool_rxnfc *cmd)
1398 {
1399         struct i40e_fdir_filter *rule, *parent;
1400         struct i40e_pf *pf = vsi->back;
1401         struct hlist_node *node2;
1402         int err = -EINVAL;
1403
1404         parent = NULL;
1405         rule = NULL;
1406
1407         hlist_for_each_entry_safe(rule, node2,
1408                                   &pf->fdir_filter_list, fdir_node) {
1409                 /* hash found, or no matching entry */
1410                 if (rule->fd_id >= sw_idx)
1411                         break;
1412                 parent = rule;
1413         }
1414
1415         /* if there is an old rule occupying our place remove it */
1416         if (rule && (rule->fd_id == sw_idx)) {
1417                 if (input && !i40e_match_fdir_input_set(rule, input))
1418                         err = i40e_add_del_fdir(vsi, rule, false);
1419                 else if (!input)
1420                         err = i40e_add_del_fdir(vsi, rule, false);
1421                 hlist_del(&rule->fdir_node);
1422                 kfree(rule);
1423                 pf->fdir_pf_active_filters--;
1424         }
1425
1426         /* If no input this was a delete, err should be 0 if a rule was
1427          * successfully found and removed from the list else -EINVAL
1428          */
1429         if (!input)
1430                 return err;
1431
1432         /* initialize node and set software index */
1433         INIT_HLIST_NODE(&input->fdir_node);
1434
1435         /* add filter to the list */
1436         if (parent)
1437                 hlist_add_after(&parent->fdir_node, &input->fdir_node);
1438         else
1439                 hlist_add_head(&input->fdir_node,
1440                                &pf->fdir_filter_list);
1441
1442         /* update counts */
1443         pf->fdir_pf_active_filters++;
1444
1445         return 0;
1446 }
1447
1448 /**
1449  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
1450  * @vsi: Pointer to the targeted VSI
1451  * @cmd: The command to get or set Rx flow classification rules
1452  *
1453  * The function removes a Flow Director filter entry from the
1454  * hlist of the corresponding PF
1455  *
1456  * Returns 0 on success
1457  */
1458 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
1459                                struct ethtool_rxnfc *cmd)
1460 {
1461         struct ethtool_rx_flow_spec *fsp =
1462                 (struct ethtool_rx_flow_spec *)&cmd->fs;
1463         struct i40e_pf *pf = vsi->back;
1464         int ret = 0;
1465
1466         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
1467
1468         i40e_fdir_check_and_reenable(pf);
1469         return ret;
1470 }
1471
1472 /**
1473  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
1474  * @vsi: pointer to the targeted VSI
1475  * @cmd: command to get or set RX flow classification rules
1476  *
1477  * Add Flow Director filters for a specific flow spec based on their
1478  * protocol.  Returns 0 if the filters were successfully added.
1479  **/
1480 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
1481                                  struct ethtool_rxnfc *cmd)
1482 {
1483         struct ethtool_rx_flow_spec *fsp;
1484         struct i40e_fdir_filter *input;
1485         struct i40e_pf *pf;
1486         int ret = -EINVAL;
1487
1488         if (!vsi)
1489                 return -EINVAL;
1490
1491         pf = vsi->back;
1492
1493         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
1494                 return -EOPNOTSUPP;
1495
1496         if (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)
1497                 return -ENOSPC;
1498
1499         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1500
1501         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
1502                               pf->hw.func_caps.fd_filters_guaranteed)) {
1503                 return -EINVAL;
1504         }
1505
1506         if (fsp->ring_cookie >= vsi->num_queue_pairs)
1507                 return -EINVAL;
1508
1509         input = kzalloc(sizeof(*input), GFP_KERNEL);
1510
1511         if (!input)
1512                 return -ENOMEM;
1513
1514         input->fd_id = fsp->location;
1515
1516         if (fsp->ring_cookie == RX_CLS_FLOW_DISC)
1517                 input->dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
1518         else
1519                 input->dest_ctl =
1520                              I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
1521
1522         input->q_index = fsp->ring_cookie;
1523         input->flex_off = 0;
1524         input->pctype = 0;
1525         input->dest_vsi = vsi->id;
1526         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
1527         input->cnt_index = 0;
1528         input->flow_type = fsp->flow_type;
1529         input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
1530         input->src_port = fsp->h_u.tcp_ip4_spec.psrc;
1531         input->dst_port = fsp->h_u.tcp_ip4_spec.pdst;
1532         input->src_ip[0] = fsp->h_u.tcp_ip4_spec.ip4src;
1533         input->dst_ip[0] = fsp->h_u.tcp_ip4_spec.ip4dst;
1534
1535         ret = i40e_add_del_fdir(vsi, input, true);
1536         if (ret)
1537                 kfree(input);
1538         else
1539                 i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
1540
1541         return ret;
1542 }
1543
1544 /**
1545  * i40e_set_rxnfc - command to set RX flow classification rules
1546  * @netdev: network interface device structure
1547  * @cmd: ethtool rxnfc command
1548  *
1549  * Returns Success if the command is supported.
1550  **/
1551 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
1552 {
1553         struct i40e_netdev_priv *np = netdev_priv(netdev);
1554         struct i40e_vsi *vsi = np->vsi;
1555         struct i40e_pf *pf = vsi->back;
1556         int ret = -EOPNOTSUPP;
1557
1558         switch (cmd->cmd) {
1559         case ETHTOOL_SRXFH:
1560                 ret = i40e_set_rss_hash_opt(pf, cmd);
1561                 break;
1562         case ETHTOOL_SRXCLSRLINS:
1563                 ret = i40e_add_fdir_ethtool(vsi, cmd);
1564                 break;
1565         case ETHTOOL_SRXCLSRLDEL:
1566                 ret = i40e_del_fdir_entry(vsi, cmd);
1567                 break;
1568         default:
1569                 break;
1570         }
1571
1572         return ret;
1573 }
1574
1575 /**
1576  * i40e_max_channels - get Max number of combined channels supported
1577  * @vsi: vsi pointer
1578  **/
1579 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
1580 {
1581         /* TODO: This code assumes DCB and FD is disabled for now. */
1582         return vsi->alloc_queue_pairs;
1583 }
1584
1585 /**
1586  * i40e_get_channels - Get the current channels enabled and max supported etc.
1587  * @netdev: network interface device structure
1588  * @ch: ethtool channels structure
1589  *
1590  * We don't support separate tx and rx queues as channels. The other count
1591  * represents how many queues are being used for control. max_combined counts
1592  * how many queue pairs we can support. They may not be mapped 1 to 1 with
1593  * q_vectors since we support a lot more queue pairs than q_vectors.
1594  **/
1595 static void i40e_get_channels(struct net_device *dev,
1596                                struct ethtool_channels *ch)
1597 {
1598         struct i40e_netdev_priv *np = netdev_priv(dev);
1599         struct i40e_vsi *vsi = np->vsi;
1600         struct i40e_pf *pf = vsi->back;
1601
1602         /* report maximum channels */
1603         ch->max_combined = i40e_max_channels(vsi);
1604
1605         /* report info for other vector */
1606         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
1607         ch->max_other = ch->other_count;
1608
1609         /* Note: This code assumes DCB is disabled for now. */
1610         ch->combined_count = vsi->num_queue_pairs;
1611 }
1612
1613 /**
1614  * i40e_set_channels - Set the new channels count.
1615  * @netdev: network interface device structure
1616  * @ch: ethtool channels structure
1617  *
1618  * The new channels count may not be the same as requested by the user
1619  * since it gets rounded down to a power of 2 value.
1620  **/
1621 static int i40e_set_channels(struct net_device *dev,
1622                               struct ethtool_channels *ch)
1623 {
1624         struct i40e_netdev_priv *np = netdev_priv(dev);
1625         unsigned int count = ch->combined_count;
1626         struct i40e_vsi *vsi = np->vsi;
1627         struct i40e_pf *pf = vsi->back;
1628         int new_count;
1629
1630         /* We do not support setting channels for any other VSI at present */
1631         if (vsi->type != I40E_VSI_MAIN)
1632                 return -EINVAL;
1633
1634         /* verify they are not requesting separate vectors */
1635         if (!count || ch->rx_count || ch->tx_count)
1636                 return -EINVAL;
1637
1638         /* verify other_count has not changed */
1639         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
1640                 return -EINVAL;
1641
1642         /* verify the number of channels does not exceed hardware limits */
1643         if (count > i40e_max_channels(vsi))
1644                 return -EINVAL;
1645
1646         /* update feature limits from largest to smallest supported values */
1647         /* TODO: Flow director limit, DCB etc */
1648
1649         /* cap RSS limit */
1650         if (count > pf->rss_size_max)
1651                 count = pf->rss_size_max;
1652
1653         /* use rss_reconfig to rebuild with new queue count and update traffic
1654          * class queue mapping
1655          */
1656         new_count = i40e_reconfig_rss_queues(pf, count);
1657         if (new_count > 0)
1658                 return 0;
1659         else
1660                 return -EINVAL;
1661 }
1662
1663 static const struct ethtool_ops i40e_ethtool_ops = {
1664         .get_settings           = i40e_get_settings,
1665         .get_drvinfo            = i40e_get_drvinfo,
1666         .get_regs_len           = i40e_get_regs_len,
1667         .get_regs               = i40e_get_regs,
1668         .nway_reset             = i40e_nway_reset,
1669         .get_link               = ethtool_op_get_link,
1670         .get_wol                = i40e_get_wol,
1671         .set_wol                = i40e_set_wol,
1672         .get_eeprom_len         = i40e_get_eeprom_len,
1673         .get_eeprom             = i40e_get_eeprom,
1674         .get_ringparam          = i40e_get_ringparam,
1675         .set_ringparam          = i40e_set_ringparam,
1676         .get_pauseparam         = i40e_get_pauseparam,
1677         .get_msglevel           = i40e_get_msglevel,
1678         .set_msglevel           = i40e_set_msglevel,
1679         .get_rxnfc              = i40e_get_rxnfc,
1680         .set_rxnfc              = i40e_set_rxnfc,
1681         .self_test              = i40e_diag_test,
1682         .get_strings            = i40e_get_strings,
1683         .set_phys_id            = i40e_set_phys_id,
1684         .get_sset_count         = i40e_get_sset_count,
1685         .get_ethtool_stats      = i40e_get_ethtool_stats,
1686         .get_coalesce           = i40e_get_coalesce,
1687         .set_coalesce           = i40e_set_coalesce,
1688         .get_channels           = i40e_get_channels,
1689         .set_channels           = i40e_set_channels,
1690         .get_ts_info            = i40e_get_ts_info,
1691 };
1692
1693 void i40e_set_ethtool_ops(struct net_device *netdev)
1694 {
1695         SET_ETHTOOL_OPS(netdev, &i40e_ethtool_ops);
1696 }