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("tx_errors", stats.eth.tx_errors),
  82         I40E_PF_STAT("rx_dropped", stats.eth.rx_discards),
  83         I40E_PF_STAT("tx_dropped", stats.eth.tx_discards),
  84         I40E_PF_STAT("tx_dropped_link_down", stats.tx_dropped_link_down),
  85         I40E_PF_STAT("crc_errors", stats.crc_errors),
  86         I40E_PF_STAT("illegal_bytes", stats.illegal_bytes),
  87         I40E_PF_STAT("mac_local_faults", stats.mac_local_faults),
  88         I40E_PF_STAT("mac_remote_faults", stats.mac_remote_faults),
  89         I40E_PF_STAT("tx_timeout", tx_timeout_count),
  90         I40E_PF_STAT("rx_length_errors", stats.rx_length_errors),
  91         I40E_PF_STAT("link_xon_rx", stats.link_xon_rx),
  92         I40E_PF_STAT("link_xoff_rx", stats.link_xoff_rx),
  93         I40E_PF_STAT("link_xon_tx", stats.link_xon_tx),
  94         I40E_PF_STAT("link_xoff_tx", stats.link_xoff_tx),
  95         I40E_PF_STAT("rx_size_64", stats.rx_size_64),
  96         I40E_PF_STAT("rx_size_127", stats.rx_size_127),
  97         I40E_PF_STAT("rx_size_255", stats.rx_size_255),
  98         I40E_PF_STAT("rx_size_511", stats.rx_size_511),
  99         I40E_PF_STAT("rx_size_1023", stats.rx_size_1023),
 100         I40E_PF_STAT("rx_size_1522", stats.rx_size_1522),
 101         I40E_PF_STAT("rx_size_big", stats.rx_size_big),
 102         I40E_PF_STAT("tx_size_64", stats.tx_size_64),
 103         I40E_PF_STAT("tx_size_127", stats.tx_size_127),
 104         I40E_PF_STAT("tx_size_255", stats.tx_size_255),
 105         I40E_PF_STAT("tx_size_511", stats.tx_size_511),
 106         I40E_PF_STAT("tx_size_1023", stats.tx_size_1023),
 107         I40E_PF_STAT("tx_size_1522", stats.tx_size_1522),
 108         I40E_PF_STAT("tx_size_big", stats.tx_size_big),
 109         I40E_PF_STAT("rx_undersize", stats.rx_undersize),
 110         I40E_PF_STAT("rx_fragments", stats.rx_fragments),
 111         I40E_PF_STAT("rx_oversize", stats.rx_oversize),
 112         I40E_PF_STAT("rx_jabber", stats.rx_jabber),
 113         I40E_PF_STAT("VF_admin_queue_requests", vf_aq_requests),
 114         I40E_PF_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
 115         /* LPI stats */
 116         I40E_PF_STAT("tx_lpi_status", stats.tx_lpi_status),
 117         I40E_PF_STAT("rx_lpi_status", stats.rx_lpi_status),
 118         I40E_PF_STAT("tx_lpi_count", stats.tx_lpi_count),
 119         I40E_PF_STAT("rx_lpi_count", stats.rx_lpi_count),
 120 };
 121
 122 #define I40E_QUEUE_STATS_LEN(n) \
 123         (((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs \
 124             * 2 /* Tx and Rx together */                                     \
 125             * (sizeof(struct i40e_queue_stats) / sizeof(u64)))
 126 #define I40E_GLOBAL_STATS_LEN   ARRAY_SIZE(i40e_gstrings_stats)
 127 #define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
 128 #define I40E_VSI_STATS_LEN(n)   (I40E_NETDEV_STATS_LEN + \
 129                                  I40E_QUEUE_STATS_LEN((n)))
 130 #define I40E_PFC_STATS_LEN ( \
 131                 (FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_rx) + \
 132                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_rx) + \
 133                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_tx) + \
 134                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_tx) + \
 135                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_2_xoff)) \
 136                  / sizeof(u64))
 137 #define I40E_PF_STATS_LEN(n)    (I40E_GLOBAL_STATS_LEN + \
 138                                  I40E_PFC_STATS_LEN + \
 139                                  I40E_VSI_STATS_LEN((n)))
 140
 141 enum i40e_ethtool_test_id {
 142         I40E_ETH_TEST_REG = 0,
 143         I40E_ETH_TEST_EEPROM,
 144         I40E_ETH_TEST_INTR,
 145         I40E_ETH_TEST_LOOPBACK,
 146         I40E_ETH_TEST_LINK,
 147 };
 148
 149 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
 150         "Register test  (offline)",
 151         "Eeprom test    (offline)",
 152         "Interrupt test (offline)",
 153         "Loopback test  (offline)",
 154         "Link test   (on/offline)"
 155 };
 156
 157 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
 158
 159 /**
 160  * i40e_get_settings - Get Link Speed and Duplex settings
 161  * @netdev: network interface device structure
 162  * @ecmd: ethtool command
 163  *
 164  * Reports speed/duplex settings based on media_type
 165  **/
 166 static int i40e_get_settings(struct net_device *netdev,
 167                              struct ethtool_cmd *ecmd)
 168 {
 169         struct i40e_netdev_priv *np = netdev_priv(netdev);
 170         struct i40e_pf *pf = np->vsi->back;
 171         struct i40e_hw *hw = &pf->hw;
 172         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 173         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
 174         u32 link_speed = hw_link_info->link_speed;
 175
 176         /* hardware is either in 40G mode or 10G mode
 177          * NOTE: this section initializes supported and advertising
 178          */
 179         switch (hw_link_info->phy_type) {
 180         case I40E_PHY_TYPE_40GBASE_CR4:
 181         case I40E_PHY_TYPE_40GBASE_CR4_CU:
 182                 ecmd->supported = SUPPORTED_40000baseCR4_Full;
 183                 ecmd->advertising = ADVERTISED_40000baseCR4_Full;
 184                 break;
 185         case I40E_PHY_TYPE_40GBASE_KR4:
 186                 ecmd->supported = SUPPORTED_40000baseKR4_Full;
 187                 ecmd->advertising = ADVERTISED_40000baseKR4_Full;
 188                 break;
 189         case I40E_PHY_TYPE_40GBASE_SR4:
 190                 ecmd->supported = SUPPORTED_40000baseSR4_Full;
 191                 ecmd->advertising = ADVERTISED_40000baseSR4_Full;
 192                 break;
 193         case I40E_PHY_TYPE_40GBASE_LR4:
 194                 ecmd->supported = SUPPORTED_40000baseLR4_Full;
 195                 ecmd->advertising = ADVERTISED_40000baseLR4_Full;
 196                 break;
 197         case I40E_PHY_TYPE_10GBASE_KX4:
 198                 ecmd->supported = SUPPORTED_10000baseKX4_Full;
 199                 ecmd->advertising = ADVERTISED_10000baseKX4_Full;
 200                 break;
 201         case I40E_PHY_TYPE_10GBASE_KR:
 202                 ecmd->supported = SUPPORTED_10000baseKR_Full;
 203                 ecmd->advertising = ADVERTISED_10000baseKR_Full;
 204                 break;
 205         default:
 206                 if (i40e_is_40G_device(hw->device_id)) {
 207                         ecmd->supported = SUPPORTED_40000baseSR4_Full;
 208                         ecmd->advertising = ADVERTISED_40000baseSR4_Full;
 209                 } else {
 210                         ecmd->supported = SUPPORTED_10000baseT_Full;
 211                         ecmd->advertising = ADVERTISED_10000baseT_Full;
 212                 }
 213                 break;
 214         }
 215
 216         ecmd->supported |= SUPPORTED_Autoneg;
 217         ecmd->advertising |= ADVERTISED_Autoneg;
 218         ecmd->autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 219                           AUTONEG_ENABLE : AUTONEG_DISABLE);
 220
 221         switch (hw->phy.media_type) {
 222         case I40E_MEDIA_TYPE_BACKPLANE:
 223                 ecmd->supported |= SUPPORTED_Backplane;
 224                 ecmd->advertising |= ADVERTISED_Backplane;
 225                 ecmd->port = PORT_NONE;
 226                 break;
 227         case I40E_MEDIA_TYPE_BASET:
 228                 ecmd->supported |= SUPPORTED_TP;
 229                 ecmd->advertising |= ADVERTISED_TP;
 230                 ecmd->port = PORT_TP;
 231                 break;
 232         case I40E_MEDIA_TYPE_DA:
 233         case I40E_MEDIA_TYPE_CX4:
 234                 ecmd->supported |= SUPPORTED_FIBRE;
 235                 ecmd->advertising |= ADVERTISED_FIBRE;
 236                 ecmd->port = PORT_DA;
 237                 break;
 238         case I40E_MEDIA_TYPE_FIBER:
 239                 ecmd->supported |= SUPPORTED_FIBRE;
 240                 ecmd->advertising |= ADVERTISED_FIBRE;
 241                 ecmd->port = PORT_FIBRE;
 242                 break;
 243         case I40E_MEDIA_TYPE_UNKNOWN:
 244         default:
 245                 ecmd->port = PORT_OTHER;
 246                 break;
 247         }
 248
 249         ecmd->transceiver = XCVR_EXTERNAL;
 250
 251         if (link_up) {
 252                 switch (link_speed) {
 253                 case I40E_LINK_SPEED_40GB:
 254                         /* need a SPEED_40000 in ethtool.h */
 255                         ethtool_cmd_speed_set(ecmd, 40000);
 256                         break;
 257                 case I40E_LINK_SPEED_10GB:
 258                         ethtool_cmd_speed_set(ecmd, SPEED_10000);
 259                         break;
 260                 default:
 261                         break;
 262                 }
 263                 ecmd->duplex = DUPLEX_FULL;
 264         } else {
 265                 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
 266                 ecmd->duplex = DUPLEX_UNKNOWN;
 267         }
 268
 269         return 0;
 270 }
 271
 272 /**
 273  * i40e_get_pauseparam -  Get Flow Control status
 274  * Return tx/rx-pause status
 275  **/
 276 static void i40e_get_pauseparam(struct net_device *netdev,
 277                                 struct ethtool_pauseparam *pause)
 278 {
 279         struct i40e_netdev_priv *np = netdev_priv(netdev);
 280         struct i40e_pf *pf = np->vsi->back;
 281         struct i40e_hw *hw = &pf->hw;
 282         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 283
 284         pause->autoneg =
 285                 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 286                   AUTONEG_ENABLE : AUTONEG_DISABLE);
 287
 288         if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
 289                 pause->rx_pause = 1;
 290         } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
 291                 pause->tx_pause = 1;
 292         } else if (hw->fc.current_mode == I40E_FC_FULL) {
 293                 pause->rx_pause = 1;
 294                 pause->tx_pause = 1;
 295         }
 296 }
 297
 298 static u32 i40e_get_msglevel(struct net_device *netdev)
 299 {
 300         struct i40e_netdev_priv *np = netdev_priv(netdev);
 301         struct i40e_pf *pf = np->vsi->back;
 302
 303         return pf->msg_enable;
 304 }
 305
 306 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
 307 {
 308         struct i40e_netdev_priv *np = netdev_priv(netdev);
 309         struct i40e_pf *pf = np->vsi->back;
 310
 311         if (I40E_DEBUG_USER & data)
 312                 pf->hw.debug_mask = data;
 313         pf->msg_enable = data;
 314 }
 315
 316 static int i40e_get_regs_len(struct net_device *netdev)
 317 {
 318         int reg_count = 0;
 319         int i;
 320
 321         for (i = 0; i40e_reg_list[i].offset != 0; i++)
 322                 reg_count += i40e_reg_list[i].elements;
 323
 324         return reg_count * sizeof(u32);
 325 }
 326
 327 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
 328                           void *p)
 329 {
 330         struct i40e_netdev_priv *np = netdev_priv(netdev);
 331         struct i40e_pf *pf = np->vsi->back;
 332         struct i40e_hw *hw = &pf->hw;
 333         u32 *reg_buf = p;
 334         int i, j, ri;
 335         u32 reg;
 336
 337         /* Tell ethtool which driver-version-specific regs output we have.
 338          *
 339          * At some point, if we have ethtool doing special formatting of
 340          * this data, it will rely on this version number to know how to
 341          * interpret things.  Hence, this needs to be updated if/when the
 342          * diags register table is changed.
 343          */
 344         regs->version = 1;
 345
 346         /* loop through the diags reg table for what to print */
 347         ri = 0;
 348         for (i = 0; i40e_reg_list[i].offset != 0; i++) {
 349                 for (j = 0; j < i40e_reg_list[i].elements; j++) {
 350                         reg = i40e_reg_list[i].offset
 351                                 + (j * i40e_reg_list[i].stride);
 352                         reg_buf[ri++] = rd32(hw, reg);
 353                 }
 354         }
 355
 356 }
 357
 358 static int i40e_get_eeprom(struct net_device *netdev,
 359                            struct ethtool_eeprom *eeprom, u8 *bytes)
 360 {
 361         struct i40e_netdev_priv *np = netdev_priv(netdev);
 362         struct i40e_hw *hw = &np->vsi->back->hw;
 363         struct i40e_pf *pf = np->vsi->back;
 364         int ret_val = 0, len;
 365         u8 *eeprom_buff;
 366         u16 i, sectors;
 367         bool last;
 368 #define I40E_NVM_SECTOR_SIZE  4096
 369         if (eeprom->len == 0)
 370                 return -EINVAL;
 371
 372         eeprom->magic = hw->vendor_id | (hw->device_id << 16);
 373
 374         eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
 375         if (!eeprom_buff)
 376                 return -ENOMEM;
 377
 378         ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
 379         if (ret_val) {
 380                 dev_info(&pf->pdev->dev,
 381                          "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
 382                          ret_val, hw->aq.asq_last_status);
 383                 goto free_buff;
 384         }
 385
 386         sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
 387         sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
 388         len = I40E_NVM_SECTOR_SIZE;
 389         last = false;
 390         for (i = 0; i < sectors; i++) {
 391                 if (i == (sectors - 1)) {
 392                         len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
 393                         last = true;
 394                 }
 395                 ret_val = i40e_aq_read_nvm(hw, 0x0,
 396                                 eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
 397                                 len,
 398                                 eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
 399                                 last, NULL);
 400                 if (ret_val) {
 401                         dev_info(&pf->pdev->dev,
 402                                  "read NVM failed err=%d status=0x%x\n",
 403                                  ret_val, hw->aq.asq_last_status);
 404                         goto release_nvm;
 405                 }
 406         }
 407
 408 release_nvm:
 409         i40e_release_nvm(hw);
 410         memcpy(bytes, eeprom_buff, eeprom->len);
 411 free_buff:
 412         kfree(eeprom_buff);
 413         return ret_val;
 414 }
 415
 416 static int i40e_get_eeprom_len(struct net_device *netdev)
 417 {
 418         struct i40e_netdev_priv *np = netdev_priv(netdev);
 419         struct i40e_hw *hw = &np->vsi->back->hw;
 420         u32 val;
 421
 422         val = (rd32(hw, I40E_GLPCI_LBARCTRL)
 423                 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
 424                 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
 425         /* register returns value in power of 2, 64Kbyte chunks. */
 426         val = (64 * 1024) * (1 << val);
 427         return val;
 428 }
 429
 430 static void i40e_get_drvinfo(struct net_device *netdev,
 431                              struct ethtool_drvinfo *drvinfo)
 432 {
 433         struct i40e_netdev_priv *np = netdev_priv(netdev);
 434         struct i40e_vsi *vsi = np->vsi;
 435         struct i40e_pf *pf = vsi->back;
 436
 437         strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
 438         strlcpy(drvinfo->version, i40e_driver_version_str,
 439                 sizeof(drvinfo->version));
 440         strlcpy(drvinfo->fw_version, i40e_fw_version_str(&pf->hw),
 441                 sizeof(drvinfo->fw_version));
 442         strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
 443                 sizeof(drvinfo->bus_info));
 444 }
 445
 446 static void i40e_get_ringparam(struct net_device *netdev,
 447                                struct ethtool_ringparam *ring)
 448 {
 449         struct i40e_netdev_priv *np = netdev_priv(netdev);
 450         struct i40e_pf *pf = np->vsi->back;
 451         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 452
 453         ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
 454         ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
 455         ring->rx_mini_max_pending = 0;
 456         ring->rx_jumbo_max_pending = 0;
 457         ring->rx_pending = vsi->rx_rings[0]->count;
 458         ring->tx_pending = vsi->tx_rings[0]->count;
 459         ring->rx_mini_pending = 0;
 460         ring->rx_jumbo_pending = 0;
 461 }
 462
 463 static int i40e_set_ringparam(struct net_device *netdev,
 464                               struct ethtool_ringparam *ring)
 465 {
 466         struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
 467         struct i40e_netdev_priv *np = netdev_priv(netdev);
 468         struct i40e_vsi *vsi = np->vsi;
 469         struct i40e_pf *pf = vsi->back;
 470         u32 new_rx_count, new_tx_count;
 471         int i, err = 0;
 472
 473         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 474                 return -EINVAL;
 475
 476         if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
 477             ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
 478             ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
 479             ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
 480                 netdev_info(netdev,
 481                             "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
 482                             ring->tx_pending, ring->rx_pending,
 483                             I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
 484                 return -EINVAL;
 485         }
 486
 487         new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
 488         new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
 489
 490         /* if nothing to do return success */
 491         if ((new_tx_count == vsi->tx_rings[0]->count) &&
 492             (new_rx_count == vsi->rx_rings[0]->count))
 493                 return 0;
 494
 495         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
 496                 usleep_range(1000, 2000);
 497
 498         if (!netif_running(vsi->netdev)) {
 499                 /* simple case - set for the next time the netdev is started */
 500                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 501                         vsi->tx_rings[i]->count = new_tx_count;
 502                         vsi->rx_rings[i]->count = new_rx_count;
 503                 }
 504                 goto done;
 505         }
 506
 507         /* We can't just free everything and then setup again,
 508          * because the ISRs in MSI-X mode get passed pointers
 509          * to the Tx and Rx ring structs.
 510          */
 511
 512         /* alloc updated Tx resources */
 513         if (new_tx_count != vsi->tx_rings[0]->count) {
 514                 netdev_info(netdev,
 515                             "Changing Tx descriptor count from %d to %d.\n",
 516                             vsi->tx_rings[0]->count, new_tx_count);
 517                 tx_rings = kcalloc(vsi->alloc_queue_pairs,
 518                                    sizeof(struct i40e_ring), GFP_KERNEL);
 519                 if (!tx_rings) {
 520                         err = -ENOMEM;
 521                         goto done;
 522                 }
 523
 524                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 525                         /* clone ring and setup updated count */
 526                         tx_rings[i] = *vsi->tx_rings[i];
 527                         tx_rings[i].count = new_tx_count;
 528                         err = i40e_setup_tx_descriptors(&tx_rings[i]);
 529                         if (err) {
 530                                 while (i) {
 531                                         i--;
 532                                         i40e_free_tx_resources(&tx_rings[i]);
 533                                 }
 534                                 kfree(tx_rings);
 535                                 tx_rings = NULL;
 536
 537                                 goto done;
 538                         }
 539                 }
 540         }
 541
 542         /* alloc updated Rx resources */
 543         if (new_rx_count != vsi->rx_rings[0]->count) {
 544                 netdev_info(netdev,
 545                             "Changing Rx descriptor count from %d to %d\n",
 546                             vsi->rx_rings[0]->count, new_rx_count);
 547                 rx_rings = kcalloc(vsi->alloc_queue_pairs,
 548                                    sizeof(struct i40e_ring), GFP_KERNEL);
 549                 if (!rx_rings) {
 550                         err = -ENOMEM;
 551                         goto free_tx;
 552                 }
 553
 554                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 555                         /* clone ring and setup updated count */
 556                         rx_rings[i] = *vsi->rx_rings[i];
 557                         rx_rings[i].count = new_rx_count;
 558                         err = i40e_setup_rx_descriptors(&rx_rings[i]);
 559                         if (err) {
 560                                 while (i) {
 561                                         i--;
 562                                         i40e_free_rx_resources(&rx_rings[i]);
 563                                 }
 564                                 kfree(rx_rings);
 565                                 rx_rings = NULL;
 566
 567                                 goto free_tx;
 568                         }
 569                 }
 570         }
 571
 572         /* Bring interface down, copy in the new ring info,
 573          * then restore the interface
 574          */
 575         i40e_down(vsi);
 576
 577         if (tx_rings) {
 578                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 579                         i40e_free_tx_resources(vsi->tx_rings[i]);
 580                         *vsi->tx_rings[i] = tx_rings[i];
 581                 }
 582                 kfree(tx_rings);
 583                 tx_rings = NULL;
 584         }
 585
 586         if (rx_rings) {
 587                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 588                         i40e_free_rx_resources(vsi->rx_rings[i]);
 589                         *vsi->rx_rings[i] = rx_rings[i];
 590                 }
 591                 kfree(rx_rings);
 592                 rx_rings = NULL;
 593         }
 594
 595         i40e_up(vsi);
 596
 597 free_tx:
 598         /* error cleanup if the Rx allocations failed after getting Tx */
 599         if (tx_rings) {
 600                 for (i = 0; i < vsi->num_queue_pairs; i++)
 601                         i40e_free_tx_resources(&tx_rings[i]);
 602                 kfree(tx_rings);
 603                 tx_rings = NULL;
 604         }
 605
 606 done:
 607         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
 608
 609         return err;
 610 }
 611
 612 static int i40e_get_sset_count(struct net_device *netdev, int sset)
 613 {
 614         struct i40e_netdev_priv *np = netdev_priv(netdev);
 615         struct i40e_vsi *vsi = np->vsi;
 616         struct i40e_pf *pf = vsi->back;
 617
 618         switch (sset) {
 619         case ETH_SS_TEST:
 620                 return I40E_TEST_LEN;
 621         case ETH_SS_STATS:
 622                 if (vsi == pf->vsi[pf->lan_vsi])
 623                         return I40E_PF_STATS_LEN(netdev);
 624                 else
 625                         return I40E_VSI_STATS_LEN(netdev);
 626         default:
 627                 return -EOPNOTSUPP;
 628         }
 629 }
 630
 631 static void i40e_get_ethtool_stats(struct net_device *netdev,
 632                                    struct ethtool_stats *stats, u64 *data)
 633 {
 634         struct i40e_netdev_priv *np = netdev_priv(netdev);
 635         struct i40e_ring *tx_ring, *rx_ring;
 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++) {
 653                 tx_ring = ACCESS_ONCE(vsi->tx_rings[j]);
 654
 655                 if (!tx_ring)
 656                         continue;
 657
 658                 /* process Tx ring statistics */
 659                 do {
 660                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 661                         data[i] = tx_ring->stats.packets;
 662                         data[i + 1] = tx_ring->stats.bytes;
 663                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 664                 i += 2;
 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] = rx_ring->stats.packets;
 671                         data[i + 1] = rx_ring->stats.bytes;
 672                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 673                 i += 2;
 674         }
 675         rcu_read_unlock();
 676         if (vsi == pf->vsi[pf->lan_vsi]) {
 677                 for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) {
 678                         p = (char *)pf + i40e_gstrings_stats[j].stat_offset;
 679                         data[i++] = (i40e_gstrings_stats[j].sizeof_stat ==
 680                                    sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 681                 }
 682                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
 683                         data[i++] = pf->stats.priority_xon_tx[j];
 684                         data[i++] = pf->stats.priority_xoff_tx[j];
 685                 }
 686                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
 687                         data[i++] = pf->stats.priority_xon_rx[j];
 688                         data[i++] = pf->stats.priority_xoff_rx[j];
 689                 }
 690                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++)
 691                         data[i++] = pf->stats.priority_xon_2_xoff[j];
 692         }
 693 }
 694
 695 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
 696                              u8 *data)
 697 {
 698         struct i40e_netdev_priv *np = netdev_priv(netdev);
 699         struct i40e_vsi *vsi = np->vsi;
 700         struct i40e_pf *pf = vsi->back;
 701         char *p = (char *)data;
 702         int i;
 703
 704         switch (stringset) {
 705         case ETH_SS_TEST:
 706                 for (i = 0; i < I40E_TEST_LEN; i++) {
 707                         memcpy(data, i40e_gstrings_test[i], ETH_GSTRING_LEN);
 708                         data += ETH_GSTRING_LEN;
 709                 }
 710                 break;
 711         case ETH_SS_STATS:
 712                 for (i = 0; i < I40E_NETDEV_STATS_LEN; i++) {
 713                         snprintf(p, ETH_GSTRING_LEN, "%s",
 714                                  i40e_gstrings_net_stats[i].stat_string);
 715                         p += ETH_GSTRING_LEN;
 716                 }
 717                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 718                         snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_packets", i);
 719                         p += ETH_GSTRING_LEN;
 720                         snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_bytes", i);
 721                         p += ETH_GSTRING_LEN;
 722                         snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_packets", i);
 723                         p += ETH_GSTRING_LEN;
 724                         snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_bytes", i);
 725                         p += ETH_GSTRING_LEN;
 726                 }
 727                 if (vsi == pf->vsi[pf->lan_vsi]) {
 728                         for (i = 0; i < I40E_GLOBAL_STATS_LEN; i++) {
 729                                 snprintf(p, ETH_GSTRING_LEN, "port.%s",
 730                                          i40e_gstrings_stats[i].stat_string);
 731                                 p += ETH_GSTRING_LEN;
 732                         }
 733                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 734                                 snprintf(p, ETH_GSTRING_LEN,
 735                                          "port.tx_priority_%u_xon", i);
 736                                 p += ETH_GSTRING_LEN;
 737                                 snprintf(p, ETH_GSTRING_LEN,
 738                                          "port.tx_priority_%u_xoff", i);
 739                                 p += ETH_GSTRING_LEN;
 740                         }
 741                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 742                                 snprintf(p, ETH_GSTRING_LEN,
 743                                          "port.rx_priority_%u_xon", i);
 744                                 p += ETH_GSTRING_LEN;
 745                                 snprintf(p, ETH_GSTRING_LEN,
 746                                          "port.rx_priority_%u_xoff", i);
 747                                 p += ETH_GSTRING_LEN;
 748                         }
 749                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 750                                 snprintf(p, ETH_GSTRING_LEN,
 751                                          "port.rx_priority_%u_xon_2_xoff", i);
 752                                 p += ETH_GSTRING_LEN;
 753                         }
 754                 }
 755                 /* BUG_ON(p - data != I40E_STATS_LEN * ETH_GSTRING_LEN); */
 756                 break;
 757         }
 758 }
 759
 760 static int i40e_get_ts_info(struct net_device *dev,
 761                             struct ethtool_ts_info *info)
 762 {
 763         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
 764
 765         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
 766                                 SOF_TIMESTAMPING_RX_SOFTWARE |
 767                                 SOF_TIMESTAMPING_SOFTWARE |
 768                                 SOF_TIMESTAMPING_TX_HARDWARE |
 769                                 SOF_TIMESTAMPING_RX_HARDWARE |
 770                                 SOF_TIMESTAMPING_RAW_HARDWARE;
 771
 772         if (pf->ptp_clock)
 773                 info->phc_index = ptp_clock_index(pf->ptp_clock);
 774         else
 775                 info->phc_index = -1;
 776
 777         info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
 778
 779         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
 780                            (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
 781                            (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
 782                            (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
 783                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
 784                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
 785                            (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
 786                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
 787                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
 788                            (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
 789                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
 790                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
 791
 792         return 0;
 793 }
 794
 795 static int i40e_link_test(struct net_device *netdev, u64 *data)
 796 {
 797         struct i40e_netdev_priv *np = netdev_priv(netdev);
 798         struct i40e_pf *pf = np->vsi->back;
 799
 800         netif_info(pf, hw, netdev, "link test\n");
 801         if (i40e_get_link_status(&pf->hw))
 802                 *data = 0;
 803         else
 804                 *data = 1;
 805
 806         return *data;
 807 }
 808
 809 static int i40e_reg_test(struct net_device *netdev, u64 *data)
 810 {
 811         struct i40e_netdev_priv *np = netdev_priv(netdev);
 812         struct i40e_pf *pf = np->vsi->back;
 813
 814         netif_info(pf, hw, netdev, "register test\n");
 815         *data = i40e_diag_reg_test(&pf->hw);
 816
 817         return *data;
 818 }
 819
 820 static int i40e_eeprom_test(struct net_device *netdev, u64 *data)
 821 {
 822         struct i40e_netdev_priv *np = netdev_priv(netdev);
 823         struct i40e_pf *pf = np->vsi->back;
 824
 825         netif_info(pf, hw, netdev, "eeprom test\n");
 826         *data = i40e_diag_eeprom_test(&pf->hw);
 827
 828         return *data;
 829 }
 830
 831 static int i40e_intr_test(struct net_device *netdev, u64 *data)
 832 {
 833         struct i40e_netdev_priv *np = netdev_priv(netdev);
 834         struct i40e_pf *pf = np->vsi->back;
 835         u16 swc_old = pf->sw_int_count;
 836
 837         netif_info(pf, hw, netdev, "interrupt test\n");
 838         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
 839              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
 840               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
 841         usleep_range(1000, 2000);
 842         *data = (swc_old == pf->sw_int_count);
 843
 844         return *data;
 845 }
 846
 847 static int i40e_loopback_test(struct net_device *netdev, u64 *data)
 848 {
 849         struct i40e_netdev_priv *np = netdev_priv(netdev);
 850         struct i40e_pf *pf = np->vsi->back;
 851
 852         netif_info(pf, hw, netdev, "loopback test not implemented\n");
 853         *data = 0;
 854
 855         return *data;
 856 }
 857
 858 static void i40e_diag_test(struct net_device *netdev,
 859                            struct ethtool_test *eth_test, u64 *data)
 860 {
 861         struct i40e_netdev_priv *np = netdev_priv(netdev);
 862         struct i40e_pf *pf = np->vsi->back;
 863
 864         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
 865                 /* Offline tests */
 866                 netif_info(pf, drv, netdev, "offline testing starting\n");
 867
 868                 set_bit(__I40E_TESTING, &pf->state);
 869
 870                 /* Link test performed before hardware reset
 871                  * so autoneg doesn't interfere with test result
 872                  */
 873                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
 874                         eth_test->flags |= ETH_TEST_FL_FAILED;
 875
 876                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
 877                         eth_test->flags |= ETH_TEST_FL_FAILED;
 878
 879                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
 880                         eth_test->flags |= ETH_TEST_FL_FAILED;
 881
 882                 if (i40e_loopback_test(netdev, &data[I40E_ETH_TEST_LOOPBACK]))
 883                         eth_test->flags |= ETH_TEST_FL_FAILED;
 884
 885                 /* run reg test last, a reset is required after it */
 886                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
 887                         eth_test->flags |= ETH_TEST_FL_FAILED;
 888
 889                 clear_bit(__I40E_TESTING, &pf->state);
 890                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
 891         } else {
 892                 /* Online tests */
 893                 netif_info(pf, drv, netdev, "online testing starting\n");
 894
 895                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
 896                         eth_test->flags |= ETH_TEST_FL_FAILED;
 897
 898                 /* Offline only tests, not run in online; pass by default */
 899                 data[I40E_ETH_TEST_REG] = 0;
 900                 data[I40E_ETH_TEST_EEPROM] = 0;
 901                 data[I40E_ETH_TEST_INTR] = 0;
 902                 data[I40E_ETH_TEST_LOOPBACK] = 0;
 903         }
 904
 905         netif_info(pf, drv, netdev, "testing finished\n");
 906 }
 907
 908 static void i40e_get_wol(struct net_device *netdev,
 909                          struct ethtool_wolinfo *wol)
 910 {
 911         struct i40e_netdev_priv *np = netdev_priv(netdev);
 912         struct i40e_pf *pf = np->vsi->back;
 913         struct i40e_hw *hw = &pf->hw;
 914         u16 wol_nvm_bits;
 915
 916         /* NVM bit on means WoL disabled for the port */
 917         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
 918         if ((1 << hw->port) & wol_nvm_bits) {
 919                 wol->supported = 0;
 920                 wol->wolopts = 0;
 921         } else {
 922                 wol->supported = WAKE_MAGIC;
 923                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
 924         }
 925 }
 926
 927 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 928 {
 929         struct i40e_netdev_priv *np = netdev_priv(netdev);
 930         struct i40e_pf *pf = np->vsi->back;
 931         struct i40e_hw *hw = &pf->hw;
 932         u16 wol_nvm_bits;
 933
 934         /* NVM bit on means WoL disabled for the port */
 935         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
 936         if (((1 << hw->port) & wol_nvm_bits))
 937                 return -EOPNOTSUPP;
 938
 939         /* only magic packet is supported */
 940         if (wol->wolopts && (wol->wolopts != WAKE_MAGIC))
 941                 return -EOPNOTSUPP;
 942
 943         /* is this a new value? */
 944         if (pf->wol_en != !!wol->wolopts) {
 945                 pf->wol_en = !!wol->wolopts;
 946                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
 947         }
 948
 949         return 0;
 950 }
 951
 952 static int i40e_nway_reset(struct net_device *netdev)
 953 {
 954         /* restart autonegotiation */
 955         struct i40e_netdev_priv *np = netdev_priv(netdev);
 956         struct i40e_pf *pf = np->vsi->back;
 957         struct i40e_hw *hw = &pf->hw;
 958         i40e_status ret = 0;
 959
 960         ret = i40e_aq_set_link_restart_an(hw, NULL);
 961         if (ret) {
 962                 netdev_info(netdev, "link restart failed, aq_err=%d\n",
 963                             pf->hw.aq.asq_last_status);
 964                 return -EIO;
 965         }
 966
 967         return 0;
 968 }
 969
 970 static int i40e_set_phys_id(struct net_device *netdev,
 971                             enum ethtool_phys_id_state state)
 972 {
 973         struct i40e_netdev_priv *np = netdev_priv(netdev);
 974         struct i40e_pf *pf = np->vsi->back;
 975         struct i40e_hw *hw = &pf->hw;
 976         int blink_freq = 2;
 977
 978         switch (state) {
 979         case ETHTOOL_ID_ACTIVE:
 980                 pf->led_status = i40e_led_get(hw);
 981                 return blink_freq;
 982         case ETHTOOL_ID_ON:
 983                 i40e_led_set(hw, 0xF, false);
 984                 break;
 985         case ETHTOOL_ID_OFF:
 986                 i40e_led_set(hw, 0x0, false);
 987                 break;
 988         case ETHTOOL_ID_INACTIVE:
 989                 i40e_led_set(hw, pf->led_status, false);
 990                 break;
 991         }
 992
 993         return 0;
 994 }
 995
 996 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
 997  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
 998  * 125us (8000 interrupts per second) == ITR(62)
 999  */
1000
1001 static int i40e_get_coalesce(struct net_device *netdev,
1002                              struct ethtool_coalesce *ec)
1003 {
1004         struct i40e_netdev_priv *np = netdev_priv(netdev);
1005         struct i40e_vsi *vsi = np->vsi;
1006
1007         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
1008         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
1009
1010         if (ITR_IS_DYNAMIC(vsi->rx_itr_setting))
1011                 ec->use_adaptive_rx_coalesce = 1;
1012
1013         if (ITR_IS_DYNAMIC(vsi->tx_itr_setting))
1014                 ec->use_adaptive_tx_coalesce = 1;
1015
1016         ec->rx_coalesce_usecs = vsi->rx_itr_setting & ~I40E_ITR_DYNAMIC;
1017         ec->tx_coalesce_usecs = vsi->tx_itr_setting & ~I40E_ITR_DYNAMIC;
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         if ((ec->rx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
1037             (ec->rx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
1038                 vsi->rx_itr_setting = ec->rx_coalesce_usecs;
1039         else
1040                 return -EINVAL;
1041
1042         if ((ec->tx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
1043             (ec->tx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
1044                 vsi->tx_itr_setting = ec->tx_coalesce_usecs;
1045         else
1046                 return -EINVAL;
1047
1048         if (ec->use_adaptive_rx_coalesce)
1049                 vsi->rx_itr_setting |= I40E_ITR_DYNAMIC;
1050         else
1051                 vsi->rx_itr_setting &= ~I40E_ITR_DYNAMIC;
1052
1053         if (ec->use_adaptive_tx_coalesce)
1054                 vsi->tx_itr_setting |= I40E_ITR_DYNAMIC;
1055         else
1056                 vsi->tx_itr_setting &= ~I40E_ITR_DYNAMIC;
1057
1058         vector = vsi->base_vector;
1059         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
1060                 q_vector = vsi->q_vectors[i];
1061                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
1062                 wr32(hw, I40E_PFINT_ITRN(0, vector - 1), q_vector->rx.itr);
1063                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
1064                 wr32(hw, I40E_PFINT_ITRN(1, vector - 1), q_vector->tx.itr);
1065                 i40e_flush(hw);
1066         }
1067
1068         return 0;
1069 }
1070
1071 /**
1072  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
1073  * @pf: pointer to the physical function struct
1074  * @cmd: ethtool rxnfc command
1075  *
1076  * Returns Success if the flow is supported, else Invalid Input.
1077  **/
1078 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
1079 {
1080         cmd->data = 0;
1081
1082         /* Report default options for RSS on i40e */
1083         switch (cmd->flow_type) {
1084         case TCP_V4_FLOW:
1085         case UDP_V4_FLOW:
1086                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1087         /* fall through to add IP fields */
1088         case SCTP_V4_FLOW:
1089         case AH_ESP_V4_FLOW:
1090         case AH_V4_FLOW:
1091         case ESP_V4_FLOW:
1092         case IPV4_FLOW:
1093                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1094                 break;
1095         case TCP_V6_FLOW:
1096         case UDP_V6_FLOW:
1097                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1098         /* fall through to add IP fields */
1099         case SCTP_V6_FLOW:
1100         case AH_ESP_V6_FLOW:
1101         case AH_V6_FLOW:
1102         case ESP_V6_FLOW:
1103         case IPV6_FLOW:
1104                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1105                 break;
1106         default:
1107                 return -EINVAL;
1108         }
1109
1110         return 0;
1111 }
1112
1113 /**
1114  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
1115  * @pf: Pointer to the physical function struct
1116  * @cmd: The command to get or set Rx flow classification rules
1117  * @rule_locs: Array of used rule locations
1118  *
1119  * This function populates both the total and actual rule count of
1120  * the ethtool flow classification command
1121  *
1122  * Returns 0 on success or -EMSGSIZE if entry not found
1123  **/
1124 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
1125                                      struct ethtool_rxnfc *cmd,
1126                                      u32 *rule_locs)
1127 {
1128         struct i40e_fdir_filter *rule;
1129         struct hlist_node *node2;
1130         int cnt = 0;
1131
1132         /* report total rule count */
1133         cmd->data = i40e_get_fd_cnt_all(pf);
1134
1135         hlist_for_each_entry_safe(rule, node2,
1136                                   &pf->fdir_filter_list, fdir_node) {
1137                 if (cnt == cmd->rule_cnt)
1138                         return -EMSGSIZE;
1139
1140                 rule_locs[cnt] = rule->fd_id;
1141                 cnt++;
1142         }
1143
1144         cmd->rule_cnt = cnt;
1145
1146         return 0;
1147 }
1148
1149 /**
1150  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
1151  * @pf: Pointer to the physical function struct
1152  * @cmd: The command to get or set Rx flow classification rules
1153  *
1154  * This function looks up a filter based on the Rx flow classification
1155  * command and fills the flow spec info for it if found
1156  *
1157  * Returns 0 on success or -EINVAL if filter not found
1158  **/
1159 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
1160                                        struct ethtool_rxnfc *cmd)
1161 {
1162         struct ethtool_rx_flow_spec *fsp =
1163                         (struct ethtool_rx_flow_spec *)&cmd->fs;
1164         struct i40e_fdir_filter *rule = NULL;
1165         struct hlist_node *node2;
1166
1167         hlist_for_each_entry_safe(rule, node2,
1168                                   &pf->fdir_filter_list, fdir_node) {
1169                 if (fsp->location <= rule->fd_id)
1170                         break;
1171         }
1172
1173         if (!rule || fsp->location != rule->fd_id)
1174                 return -EINVAL;
1175
1176         fsp->flow_type = rule->flow_type;
1177         if (fsp->flow_type == IP_USER_FLOW) {
1178                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
1179                 fsp->h_u.usr_ip4_spec.proto = 0;
1180                 fsp->m_u.usr_ip4_spec.proto = 0;
1181         }
1182
1183         fsp->h_u.tcp_ip4_spec.psrc = rule->src_port;
1184         fsp->h_u.tcp_ip4_spec.pdst = rule->dst_port;
1185         fsp->h_u.tcp_ip4_spec.ip4src = rule->src_ip[0];
1186         fsp->h_u.tcp_ip4_spec.ip4dst = rule->dst_ip[0];
1187         fsp->ring_cookie = rule->q_index;
1188
1189         return 0;
1190 }
1191
1192 /**
1193  * i40e_get_rxnfc - command to get RX flow classification rules
1194  * @netdev: network interface device structure
1195  * @cmd: ethtool rxnfc command
1196  *
1197  * Returns Success if the command is supported.
1198  **/
1199 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
1200                           u32 *rule_locs)
1201 {
1202         struct i40e_netdev_priv *np = netdev_priv(netdev);
1203         struct i40e_vsi *vsi = np->vsi;
1204         struct i40e_pf *pf = vsi->back;
1205         int ret = -EOPNOTSUPP;
1206
1207         switch (cmd->cmd) {
1208         case ETHTOOL_GRXRINGS:
1209                 cmd->data = vsi->alloc_queue_pairs;
1210                 ret = 0;
1211                 break;
1212         case ETHTOOL_GRXFH:
1213                 ret = i40e_get_rss_hash_opts(pf, cmd);
1214                 break;
1215         case ETHTOOL_GRXCLSRLCNT:
1216                 cmd->rule_cnt = pf->fdir_pf_active_filters;
1217                 /* report total rule count */
1218                 cmd->data = i40e_get_fd_cnt_all(pf);
1219                 ret = 0;
1220                 break;
1221         case ETHTOOL_GRXCLSRULE:
1222                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
1223                 break;
1224         case ETHTOOL_GRXCLSRLALL:
1225                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
1226                 break;
1227         default:
1228                 break;
1229         }
1230
1231         return ret;
1232 }
1233
1234 /**
1235  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
1236  * @pf: pointer to the physical function struct
1237  * @cmd: ethtool rxnfc command
1238  *
1239  * Returns Success if the flow input set is supported.
1240  **/
1241 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
1242 {
1243         struct i40e_hw *hw = &pf->hw;
1244         u64 hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
1245                    ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
1246
1247         /* RSS does not support anything other than hashing
1248          * to queues on src and dst IPs and ports
1249          */
1250         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
1251                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
1252                 return -EINVAL;
1253
1254         /* We need at least the IP SRC and DEST fields for hashing */
1255         if (!(nfc->data & RXH_IP_SRC) ||
1256             !(nfc->data & RXH_IP_DST))
1257                 return -EINVAL;
1258
1259         switch (nfc->flow_type) {
1260         case TCP_V4_FLOW:
1261                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1262                 case 0:
1263                         hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1264                         break;
1265                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1266                         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1267                         break;
1268                 default:
1269                         return -EINVAL;
1270                 }
1271                 break;
1272         case TCP_V6_FLOW:
1273                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1274                 case 0:
1275                         hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1276                         break;
1277                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1278                         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1279                         break;
1280                 default:
1281                         return -EINVAL;
1282                 }
1283                 break;
1284         case UDP_V4_FLOW:
1285                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1286                 case 0:
1287                         hena &= ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) |
1288                                   ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1289                         break;
1290                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1291                         hena |= (((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) |
1292                                   ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1293                         break;
1294                 default:
1295                         return -EINVAL;
1296                 }
1297                 break;
1298         case UDP_V6_FLOW:
1299                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1300                 case 0:
1301                         hena &= ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) |
1302                                   ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1303                         break;
1304                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1305                         hena |= (((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) |
1306                                  ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1307                         break;
1308                 default:
1309                         return -EINVAL;
1310                 }
1311                 break;
1312         case AH_ESP_V4_FLOW:
1313         case AH_V4_FLOW:
1314         case ESP_V4_FLOW:
1315         case SCTP_V4_FLOW:
1316                 if ((nfc->data & RXH_L4_B_0_1) ||
1317                     (nfc->data & RXH_L4_B_2_3))
1318                         return -EINVAL;
1319                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
1320                 break;
1321         case AH_ESP_V6_FLOW:
1322         case AH_V6_FLOW:
1323         case ESP_V6_FLOW:
1324         case SCTP_V6_FLOW:
1325                 if ((nfc->data & RXH_L4_B_0_1) ||
1326                     (nfc->data & RXH_L4_B_2_3))
1327                         return -EINVAL;
1328                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
1329                 break;
1330         case IPV4_FLOW:
1331                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
1332                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4);
1333                 break;
1334         case IPV6_FLOW:
1335                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
1336                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6);
1337                 break;
1338         default:
1339                 return -EINVAL;
1340         }
1341
1342         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
1343         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
1344         i40e_flush(hw);
1345
1346         return 0;
1347 }
1348
1349 /**
1350  * i40e_match_fdir_input_set - Match a new filter against an existing one
1351  * @rule: The filter already added
1352  * @input: The new filter to comapre against
1353  *
1354  * Returns true if the two input set match
1355  **/
1356 static bool i40e_match_fdir_input_set(struct i40e_fdir_filter *rule,
1357                                       struct i40e_fdir_filter *input)
1358 {
1359         if ((rule->dst_ip[0] != input->dst_ip[0]) ||
1360             (rule->src_ip[0] != input->src_ip[0]) ||
1361             (rule->dst_port != input->dst_port) ||
1362             (rule->src_port != input->src_port))
1363                 return false;
1364         return true;
1365 }
1366
1367 /**
1368  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
1369  * @vsi: Pointer to the targeted VSI
1370  * @input: The filter to update or NULL to indicate deletion
1371  * @sw_idx: Software index to the filter
1372  * @cmd: The command to get or set Rx flow classification rules
1373  *
1374  * This function updates (or deletes) a Flow Director entry from
1375  * the hlist of the corresponding PF
1376  *
1377  * Returns 0 on success
1378  **/
1379 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
1380                                           struct i40e_fdir_filter *input,
1381                                           u16 sw_idx,
1382                                           struct ethtool_rxnfc *cmd)
1383 {
1384         struct i40e_fdir_filter *rule, *parent;
1385         struct i40e_pf *pf = vsi->back;
1386         struct hlist_node *node2;
1387         int err = -EINVAL;
1388
1389         parent = NULL;
1390         rule = NULL;
1391
1392         hlist_for_each_entry_safe(rule, node2,
1393                                   &pf->fdir_filter_list, fdir_node) {
1394                 /* hash found, or no matching entry */
1395                 if (rule->fd_id >= sw_idx)
1396                         break;
1397                 parent = rule;
1398         }
1399
1400         /* if there is an old rule occupying our place remove it */
1401         if (rule && (rule->fd_id == sw_idx)) {
1402                 if (input && !i40e_match_fdir_input_set(rule, input))
1403                         err = i40e_add_del_fdir(vsi, rule, false);
1404                 else if (!input)
1405                         err = i40e_add_del_fdir(vsi, rule, false);
1406                 hlist_del(&rule->fdir_node);
1407                 kfree(rule);
1408                 pf->fdir_pf_active_filters--;
1409         }
1410
1411         /* If no input this was a delete, err should be 0 if a rule was
1412          * successfully found and removed from the list else -EINVAL
1413          */
1414         if (!input)
1415                 return err;
1416
1417         /* initialize node and set software index */
1418         INIT_HLIST_NODE(&input->fdir_node);
1419
1420         /* add filter to the list */
1421         if (parent)
1422                 hlist_add_after(&parent->fdir_node, &input->fdir_node);
1423         else
1424                 hlist_add_head(&input->fdir_node,
1425                                &pf->fdir_filter_list);
1426
1427         /* update counts */
1428         pf->fdir_pf_active_filters++;
1429
1430         return 0;
1431 }
1432
1433 /**
1434  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
1435  * @vsi: Pointer to the targeted VSI
1436  * @cmd: The command to get or set Rx flow classification rules
1437  *
1438  * The function removes a Flow Director filter entry from the
1439  * hlist of the corresponding PF
1440  *
1441  * Returns 0 on success
1442  */
1443 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
1444                                struct ethtool_rxnfc *cmd)
1445 {
1446         struct ethtool_rx_flow_spec *fsp =
1447                 (struct ethtool_rx_flow_spec *)&cmd->fs;
1448         struct i40e_pf *pf = vsi->back;
1449         int ret = 0;
1450
1451         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
1452
1453         i40e_fdir_check_and_reenable(pf);
1454         return ret;
1455 }
1456
1457 /**
1458  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
1459  * @vsi: pointer to the targeted VSI
1460  * @cmd: command to get or set RX flow classification rules
1461  *
1462  * Add Flow Director filters for a specific flow spec based on their
1463  * protocol.  Returns 0 if the filters were successfully added.
1464  **/
1465 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
1466                                  struct ethtool_rxnfc *cmd)
1467 {
1468         struct ethtool_rx_flow_spec *fsp;
1469         struct i40e_fdir_filter *input;
1470         struct i40e_pf *pf;
1471         int ret = -EINVAL;
1472
1473         if (!vsi)
1474                 return -EINVAL;
1475
1476         pf = vsi->back;
1477
1478         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
1479                 return -EOPNOTSUPP;
1480
1481         if (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)
1482                 return -ENOSPC;
1483
1484         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1485
1486         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
1487                               pf->hw.func_caps.fd_filters_guaranteed)) {
1488                 return -EINVAL;
1489         }
1490
1491         if (fsp->ring_cookie >= vsi->num_queue_pairs)
1492                 return -EINVAL;
1493
1494         input = kzalloc(sizeof(*input), GFP_KERNEL);
1495
1496         if (!input)
1497                 return -ENOMEM;
1498
1499         input->fd_id = fsp->location;
1500
1501         if (fsp->ring_cookie == RX_CLS_FLOW_DISC)
1502                 input->dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
1503         else
1504                 input->dest_ctl =
1505                              I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
1506
1507         input->q_index = fsp->ring_cookie;
1508         input->flex_off = 0;
1509         input->pctype = 0;
1510         input->dest_vsi = vsi->id;
1511         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
1512         input->cnt_index = 0;
1513         input->flow_type = fsp->flow_type;
1514         input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
1515         input->src_port = fsp->h_u.tcp_ip4_spec.psrc;
1516         input->dst_port = fsp->h_u.tcp_ip4_spec.pdst;
1517         input->src_ip[0] = fsp->h_u.tcp_ip4_spec.ip4src;
1518         input->dst_ip[0] = fsp->h_u.tcp_ip4_spec.ip4dst;
1519
1520         ret = i40e_add_del_fdir(vsi, input, true);
1521         if (ret)
1522                 kfree(input);
1523         else
1524                 i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
1525
1526         return ret;
1527 }
1528
1529 /**
1530  * i40e_set_rxnfc - command to set RX flow classification rules
1531  * @netdev: network interface device structure
1532  * @cmd: ethtool rxnfc command
1533  *
1534  * Returns Success if the command is supported.
1535  **/
1536 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
1537 {
1538         struct i40e_netdev_priv *np = netdev_priv(netdev);
1539         struct i40e_vsi *vsi = np->vsi;
1540         struct i40e_pf *pf = vsi->back;
1541         int ret = -EOPNOTSUPP;
1542
1543         switch (cmd->cmd) {
1544         case ETHTOOL_SRXFH:
1545                 ret = i40e_set_rss_hash_opt(pf, cmd);
1546                 break;
1547         case ETHTOOL_SRXCLSRLINS:
1548                 ret = i40e_add_fdir_ethtool(vsi, cmd);
1549                 break;
1550         case ETHTOOL_SRXCLSRLDEL:
1551                 ret = i40e_del_fdir_entry(vsi, cmd);
1552                 break;
1553         default:
1554                 break;
1555         }
1556
1557         return ret;
1558 }
1559
1560 /**
1561  * i40e_max_channels - get Max number of combined channels supported
1562  * @vsi: vsi pointer
1563  **/
1564 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
1565 {
1566         /* TODO: This code assumes DCB and FD is disabled for now. */
1567         return vsi->alloc_queue_pairs;
1568 }
1569
1570 /**
1571  * i40e_get_channels - Get the current channels enabled and max supported etc.
1572  * @netdev: network interface device structure
1573  * @ch: ethtool channels structure
1574  *
1575  * We don't support separate tx and rx queues as channels. The other count
1576  * represents how many queues are being used for control. max_combined counts
1577  * how many queue pairs we can support. They may not be mapped 1 to 1 with
1578  * q_vectors since we support a lot more queue pairs than q_vectors.
1579  **/
1580 static void i40e_get_channels(struct net_device *dev,
1581                                struct ethtool_channels *ch)
1582 {
1583         struct i40e_netdev_priv *np = netdev_priv(dev);
1584         struct i40e_vsi *vsi = np->vsi;
1585         struct i40e_pf *pf = vsi->back;
1586
1587         /* report maximum channels */
1588         ch->max_combined = i40e_max_channels(vsi);
1589
1590         /* report info for other vector */
1591         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
1592         ch->max_other = ch->other_count;
1593
1594         /* Note: This code assumes DCB is disabled for now. */
1595         ch->combined_count = vsi->num_queue_pairs;
1596 }
1597
1598 /**
1599  * i40e_set_channels - Set the new channels count.
1600  * @netdev: network interface device structure
1601  * @ch: ethtool channels structure
1602  *
1603  * The new channels count may not be the same as requested by the user
1604  * since it gets rounded down to a power of 2 value.
1605  **/
1606 static int i40e_set_channels(struct net_device *dev,
1607                               struct ethtool_channels *ch)
1608 {
1609         struct i40e_netdev_priv *np = netdev_priv(dev);
1610         unsigned int count = ch->combined_count;
1611         struct i40e_vsi *vsi = np->vsi;
1612         struct i40e_pf *pf = vsi->back;
1613         int new_count;
1614
1615         /* We do not support setting channels for any other VSI at present */
1616         if (vsi->type != I40E_VSI_MAIN)
1617                 return -EINVAL;
1618
1619         /* verify they are not requesting separate vectors */
1620         if (!count || ch->rx_count || ch->tx_count)
1621                 return -EINVAL;
1622
1623         /* verify other_count has not changed */
1624         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
1625                 return -EINVAL;
1626
1627         /* verify the number of channels does not exceed hardware limits */
1628         if (count > i40e_max_channels(vsi))
1629                 return -EINVAL;
1630
1631         /* update feature limits from largest to smallest supported values */
1632         /* TODO: Flow director limit, DCB etc */
1633
1634         /* cap RSS limit */
1635         if (count > pf->rss_size_max)
1636                 count = pf->rss_size_max;
1637
1638         /* use rss_reconfig to rebuild with new queue count and update traffic
1639          * class queue mapping
1640          */
1641         new_count = i40e_reconfig_rss_queues(pf, count);
1642         if (new_count > 0)
1643                 return 0;
1644         else
1645                 return -EINVAL;
1646 }
1647
1648 static const struct ethtool_ops i40e_ethtool_ops = {
1649         .get_settings           = i40e_get_settings,
1650         .get_drvinfo            = i40e_get_drvinfo,
1651         .get_regs_len           = i40e_get_regs_len,
1652         .get_regs               = i40e_get_regs,
1653         .nway_reset             = i40e_nway_reset,
1654         .get_link               = ethtool_op_get_link,
1655         .get_wol                = i40e_get_wol,
1656         .set_wol                = i40e_set_wol,
1657         .get_eeprom_len         = i40e_get_eeprom_len,
1658         .get_eeprom             = i40e_get_eeprom,
1659         .get_ringparam          = i40e_get_ringparam,
1660         .set_ringparam          = i40e_set_ringparam,
1661         .get_pauseparam         = i40e_get_pauseparam,
1662         .get_msglevel           = i40e_get_msglevel,
1663         .set_msglevel           = i40e_set_msglevel,
1664         .get_rxnfc              = i40e_get_rxnfc,
1665         .set_rxnfc              = i40e_set_rxnfc,
1666         .self_test              = i40e_diag_test,
1667         .get_strings            = i40e_get_strings,
1668         .set_phys_id            = i40e_set_phys_id,
1669         .get_sset_count         = i40e_get_sset_count,
1670         .get_ethtool_stats      = i40e_get_ethtool_stats,
1671         .get_coalesce           = i40e_get_coalesce,
1672         .set_coalesce           = i40e_set_coalesce,
1673         .get_channels           = i40e_get_channels,
1674         .set_channels           = i40e_set_channels,
1675         .get_ts_info            = i40e_get_ts_info,
1676 };
1677
1678 void i40e_set_ethtool_ops(struct net_device *netdev)
1679 {
1680         netdev->ethtool_ops = &i40e_ethtool_ops;
1681 }