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++) {
 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                 i += 2;
 666
 667                 /* Rx ring is the 2nd half of the queue pair */
 668                 rx_ring = &tx_ring[1];
 669                 do {
 670                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 671                         data[i] = rx_ring->stats.packets;
 672                         data[i + 1] = rx_ring->stats.bytes;
 673                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 674                 i += 2;
 675         }
 676         rcu_read_unlock();
 677         if (vsi == pf->vsi[pf->lan_vsi]) {
 678                 for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) {
 679                         p = (char *)pf + i40e_gstrings_stats[j].stat_offset;
 680                         data[i++] = (i40e_gstrings_stats[j].sizeof_stat ==
 681                                    sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 682                 }
 683                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
 684                         data[i++] = pf->stats.priority_xon_tx[j];
 685                         data[i++] = pf->stats.priority_xoff_tx[j];
 686                 }
 687                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
 688                         data[i++] = pf->stats.priority_xon_rx[j];
 689                         data[i++] = pf->stats.priority_xoff_rx[j];
 690                 }
 691                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++)
 692                         data[i++] = pf->stats.priority_xon_2_xoff[j];
 693         }
 694 }
 695
 696 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
 697                              u8 *data)
 698 {
 699         struct i40e_netdev_priv *np = netdev_priv(netdev);
 700         struct i40e_vsi *vsi = np->vsi;
 701         struct i40e_pf *pf = vsi->back;
 702         char *p = (char *)data;
 703         int i;
 704
 705         switch (stringset) {
 706         case ETH_SS_TEST:
 707                 for (i = 0; i < I40E_TEST_LEN; i++) {
 708                         memcpy(data, i40e_gstrings_test[i], ETH_GSTRING_LEN);
 709                         data += ETH_GSTRING_LEN;
 710                 }
 711                 break;
 712         case ETH_SS_STATS:
 713                 for (i = 0; i < I40E_NETDEV_STATS_LEN; i++) {
 714                         snprintf(p, ETH_GSTRING_LEN, "%s",
 715                                  i40e_gstrings_net_stats[i].stat_string);
 716                         p += ETH_GSTRING_LEN;
 717                 }
 718                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 719                         snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_packets", i);
 720                         p += ETH_GSTRING_LEN;
 721                         snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_bytes", i);
 722                         p += ETH_GSTRING_LEN;
 723                         snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_packets", i);
 724                         p += ETH_GSTRING_LEN;
 725                         snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_bytes", i);
 726                         p += ETH_GSTRING_LEN;
 727                 }
 728                 if (vsi == pf->vsi[pf->lan_vsi]) {
 729                         for (i = 0; i < I40E_GLOBAL_STATS_LEN; i++) {
 730                                 snprintf(p, ETH_GSTRING_LEN, "port.%s",
 731                                          i40e_gstrings_stats[i].stat_string);
 732                                 p += ETH_GSTRING_LEN;
 733                         }
 734                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 735                                 snprintf(p, ETH_GSTRING_LEN,
 736                                          "port.tx_priority_%u_xon", i);
 737                                 p += ETH_GSTRING_LEN;
 738                                 snprintf(p, ETH_GSTRING_LEN,
 739                                          "port.tx_priority_%u_xoff", i);
 740                                 p += ETH_GSTRING_LEN;
 741                         }
 742                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 743                                 snprintf(p, ETH_GSTRING_LEN,
 744                                          "port.rx_priority_%u_xon", i);
 745                                 p += ETH_GSTRING_LEN;
 746                                 snprintf(p, ETH_GSTRING_LEN,
 747                                          "port.rx_priority_%u_xoff", i);
 748                                 p += ETH_GSTRING_LEN;
 749                         }
 750                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 751                                 snprintf(p, ETH_GSTRING_LEN,
 752                                          "port.rx_priority_%u_xon_2_xoff", i);
 753                                 p += ETH_GSTRING_LEN;
 754                         }
 755                 }
 756                 /* BUG_ON(p - data != I40E_STATS_LEN * ETH_GSTRING_LEN); */
 757                 break;
 758         }
 759 }
 760
 761 static int i40e_get_ts_info(struct net_device *dev,
 762                             struct ethtool_ts_info *info)
 763 {
 764         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
 765
 766         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
 767                                 SOF_TIMESTAMPING_RX_SOFTWARE |
 768                                 SOF_TIMESTAMPING_SOFTWARE |
 769                                 SOF_TIMESTAMPING_TX_HARDWARE |
 770                                 SOF_TIMESTAMPING_RX_HARDWARE |
 771                                 SOF_TIMESTAMPING_RAW_HARDWARE;
 772
 773         if (pf->ptp_clock)
 774                 info->phc_index = ptp_clock_index(pf->ptp_clock);
 775         else
 776                 info->phc_index = -1;
 777
 778         info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
 779
 780         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
 781                            (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
 782                            (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
 783                            (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
 784                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
 785                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
 786                            (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
 787                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
 788                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
 789                            (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
 790                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
 791                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
 792
 793         return 0;
 794 }
 795
 796 static int i40e_link_test(struct net_device *netdev, u64 *data)
 797 {
 798         struct i40e_netdev_priv *np = netdev_priv(netdev);
 799         struct i40e_pf *pf = np->vsi->back;
 800
 801         netif_info(pf, hw, netdev, "link test\n");
 802         if (i40e_get_link_status(&pf->hw))
 803                 *data = 0;
 804         else
 805                 *data = 1;
 806
 807         return *data;
 808 }
 809
 810 static int i40e_reg_test(struct net_device *netdev, u64 *data)
 811 {
 812         struct i40e_netdev_priv *np = netdev_priv(netdev);
 813         struct i40e_pf *pf = np->vsi->back;
 814
 815         netif_info(pf, hw, netdev, "register test\n");
 816         *data = i40e_diag_reg_test(&pf->hw);
 817
 818         return *data;
 819 }
 820
 821 static int i40e_eeprom_test(struct net_device *netdev, u64 *data)
 822 {
 823         struct i40e_netdev_priv *np = netdev_priv(netdev);
 824         struct i40e_pf *pf = np->vsi->back;
 825
 826         netif_info(pf, hw, netdev, "eeprom test\n");
 827         *data = i40e_diag_eeprom_test(&pf->hw);
 828
 829         return *data;
 830 }
 831
 832 static int i40e_intr_test(struct net_device *netdev, u64 *data)
 833 {
 834         struct i40e_netdev_priv *np = netdev_priv(netdev);
 835         struct i40e_pf *pf = np->vsi->back;
 836         u16 swc_old = pf->sw_int_count;
 837
 838         netif_info(pf, hw, netdev, "interrupt test\n");
 839         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
 840              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
 841               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
 842         usleep_range(1000, 2000);
 843         *data = (swc_old == pf->sw_int_count);
 844
 845         return *data;
 846 }
 847
 848 static int i40e_loopback_test(struct net_device *netdev, u64 *data)
 849 {
 850         struct i40e_netdev_priv *np = netdev_priv(netdev);
 851         struct i40e_pf *pf = np->vsi->back;
 852
 853         netif_info(pf, hw, netdev, "loopback test not implemented\n");
 854         *data = 0;
 855
 856         return *data;
 857 }
 858
 859 static void i40e_diag_test(struct net_device *netdev,
 860                            struct ethtool_test *eth_test, u64 *data)
 861 {
 862         struct i40e_netdev_priv *np = netdev_priv(netdev);
 863         struct i40e_pf *pf = np->vsi->back;
 864
 865         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
 866                 /* Offline tests */
 867                 netif_info(pf, drv, netdev, "offline testing starting\n");
 868
 869                 set_bit(__I40E_TESTING, &pf->state);
 870
 871                 /* Link test performed before hardware reset
 872                  * so autoneg doesn't interfere with test result
 873                  */
 874                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
 875                         eth_test->flags |= ETH_TEST_FL_FAILED;
 876
 877                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
 878                         eth_test->flags |= ETH_TEST_FL_FAILED;
 879
 880                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
 881                         eth_test->flags |= ETH_TEST_FL_FAILED;
 882
 883                 if (i40e_loopback_test(netdev, &data[I40E_ETH_TEST_LOOPBACK]))
 884                         eth_test->flags |= ETH_TEST_FL_FAILED;
 885
 886                 /* run reg test last, a reset is required after it */
 887                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
 888                         eth_test->flags |= ETH_TEST_FL_FAILED;
 889
 890                 clear_bit(__I40E_TESTING, &pf->state);
 891                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
 892         } else {
 893                 /* Online tests */
 894                 netif_info(pf, drv, netdev, "online testing starting\n");
 895
 896                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
 897                         eth_test->flags |= ETH_TEST_FL_FAILED;
 898
 899                 /* Offline only tests, not run in online; pass by default */
 900                 data[I40E_ETH_TEST_REG] = 0;
 901                 data[I40E_ETH_TEST_EEPROM] = 0;
 902                 data[I40E_ETH_TEST_INTR] = 0;
 903                 data[I40E_ETH_TEST_LOOPBACK] = 0;
 904         }
 905
 906         netif_info(pf, drv, netdev, "testing finished\n");
 907 }
 908
 909 static void i40e_get_wol(struct net_device *netdev,
 910                          struct ethtool_wolinfo *wol)
 911 {
 912         struct i40e_netdev_priv *np = netdev_priv(netdev);
 913         struct i40e_pf *pf = np->vsi->back;
 914         struct i40e_hw *hw = &pf->hw;
 915         u16 wol_nvm_bits;
 916
 917         /* NVM bit on means WoL disabled for the port */
 918         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
 919         if ((1 << hw->port) & wol_nvm_bits) {
 920                 wol->supported = 0;
 921                 wol->wolopts = 0;
 922         } else {
 923                 wol->supported = WAKE_MAGIC;
 924                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
 925         }
 926 }
 927
 928 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 929 {
 930         struct i40e_netdev_priv *np = netdev_priv(netdev);
 931         struct i40e_pf *pf = np->vsi->back;
 932         struct i40e_hw *hw = &pf->hw;
 933         u16 wol_nvm_bits;
 934
 935         /* NVM bit on means WoL disabled for the port */
 936         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
 937         if (((1 << hw->port) & wol_nvm_bits))
 938                 return -EOPNOTSUPP;
 939
 940         /* only magic packet is supported */
 941         if (wol->wolopts && (wol->wolopts != WAKE_MAGIC))
 942                 return -EOPNOTSUPP;
 943
 944         /* is this a new value? */
 945         if (pf->wol_en != !!wol->wolopts) {
 946                 pf->wol_en = !!wol->wolopts;
 947                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
 948         }
 949
 950         return 0;
 951 }
 952
 953 static int i40e_nway_reset(struct net_device *netdev)
 954 {
 955         /* restart autonegotiation */
 956         struct i40e_netdev_priv *np = netdev_priv(netdev);
 957         struct i40e_pf *pf = np->vsi->back;
 958         struct i40e_hw *hw = &pf->hw;
 959         i40e_status ret = 0;
 960
 961         ret = i40e_aq_set_link_restart_an(hw, NULL);
 962         if (ret) {
 963                 netdev_info(netdev, "link restart failed, aq_err=%d\n",
 964                             pf->hw.aq.asq_last_status);
 965                 return -EIO;
 966         }
 967
 968         return 0;
 969 }
 970
 971 static int i40e_set_phys_id(struct net_device *netdev,
 972                             enum ethtool_phys_id_state state)
 973 {
 974         struct i40e_netdev_priv *np = netdev_priv(netdev);
 975         struct i40e_pf *pf = np->vsi->back;
 976         struct i40e_hw *hw = &pf->hw;
 977         int blink_freq = 2;
 978
 979         switch (state) {
 980         case ETHTOOL_ID_ACTIVE:
 981                 pf->led_status = i40e_led_get(hw);
 982                 return blink_freq;
 983         case ETHTOOL_ID_ON:
 984                 i40e_led_set(hw, 0xF, false);
 985                 break;
 986         case ETHTOOL_ID_OFF:
 987                 i40e_led_set(hw, 0x0, false);
 988                 break;
 989         case ETHTOOL_ID_INACTIVE:
 990                 i40e_led_set(hw, pf->led_status, false);
 991                 break;
 992         }
 993
 994         return 0;
 995 }
 996
 997 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
 998  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
 999  * 125us (8000 interrupts per second) == ITR(62)
1000  */
1001
1002 static int i40e_get_coalesce(struct net_device *netdev,
1003                              struct ethtool_coalesce *ec)
1004 {
1005         struct i40e_netdev_priv *np = netdev_priv(netdev);
1006         struct i40e_vsi *vsi = np->vsi;
1007
1008         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
1009         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
1010
1011         if (ITR_IS_DYNAMIC(vsi->rx_itr_setting))
1012                 ec->rx_coalesce_usecs = 1;
1013         else
1014                 ec->rx_coalesce_usecs = vsi->rx_itr_setting;
1015
1016         if (ITR_IS_DYNAMIC(vsi->tx_itr_setting))
1017                 ec->tx_coalesce_usecs = 1;
1018         else
1019                 ec->tx_coalesce_usecs = vsi->tx_itr_setting;
1020
1021         return 0;
1022 }
1023
1024 static int i40e_set_coalesce(struct net_device *netdev,
1025                              struct ethtool_coalesce *ec)
1026 {
1027         struct i40e_netdev_priv *np = netdev_priv(netdev);
1028         struct i40e_q_vector *q_vector;
1029         struct i40e_vsi *vsi = np->vsi;
1030         struct i40e_pf *pf = vsi->back;
1031         struct i40e_hw *hw = &pf->hw;
1032         u16 vector;
1033         int i;
1034
1035         if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
1036                 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
1037
1038         switch (ec->rx_coalesce_usecs) {
1039         case 0:
1040                 vsi->rx_itr_setting = 0;
1041                 break;
1042         case 1:
1043                 vsi->rx_itr_setting = (I40E_ITR_DYNAMIC |
1044                                        ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
1045                 break;
1046         default:
1047                 if ((ec->rx_coalesce_usecs < (I40E_MIN_ITR << 1)) ||
1048                     (ec->rx_coalesce_usecs > (I40E_MAX_ITR << 1)))
1049                         return -EINVAL;
1050                 vsi->rx_itr_setting = ec->rx_coalesce_usecs;
1051                 break;
1052         }
1053
1054         switch (ec->tx_coalesce_usecs) {
1055         case 0:
1056                 vsi->tx_itr_setting = 0;
1057                 break;
1058         case 1:
1059                 vsi->tx_itr_setting = (I40E_ITR_DYNAMIC |
1060                                        ITR_REG_TO_USEC(I40E_ITR_TX_DEF));
1061                 break;
1062         default:
1063                 if ((ec->tx_coalesce_usecs < (I40E_MIN_ITR << 1)) ||
1064                     (ec->tx_coalesce_usecs > (I40E_MAX_ITR << 1)))
1065                         return -EINVAL;
1066                 vsi->tx_itr_setting = ec->tx_coalesce_usecs;
1067                 break;
1068         }
1069
1070         vector = vsi->base_vector;
1071         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
1072                 q_vector = vsi->q_vectors[i];
1073                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
1074                 wr32(hw, I40E_PFINT_ITRN(0, vector - 1), q_vector->rx.itr);
1075                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
1076                 wr32(hw, I40E_PFINT_ITRN(1, vector - 1), q_vector->tx.itr);
1077                 i40e_flush(hw);
1078         }
1079
1080         return 0;
1081 }
1082
1083 /**
1084  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
1085  * @pf: pointer to the physical function struct
1086  * @cmd: ethtool rxnfc command
1087  *
1088  * Returns Success if the flow is supported, else Invalid Input.
1089  **/
1090 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
1091 {
1092         cmd->data = 0;
1093
1094         /* Report default options for RSS on i40e */
1095         switch (cmd->flow_type) {
1096         case TCP_V4_FLOW:
1097         case UDP_V4_FLOW:
1098                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1099         /* fall through to add IP fields */
1100         case SCTP_V4_FLOW:
1101         case AH_ESP_V4_FLOW:
1102         case AH_V4_FLOW:
1103         case ESP_V4_FLOW:
1104         case IPV4_FLOW:
1105                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1106                 break;
1107         case TCP_V6_FLOW:
1108         case UDP_V6_FLOW:
1109                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1110         /* fall through to add IP fields */
1111         case SCTP_V6_FLOW:
1112         case AH_ESP_V6_FLOW:
1113         case AH_V6_FLOW:
1114         case ESP_V6_FLOW:
1115         case IPV6_FLOW:
1116                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1117                 break;
1118         default:
1119                 return -EINVAL;
1120         }
1121
1122         return 0;
1123 }
1124
1125 /**
1126  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
1127  * @pf: Pointer to the physical function struct
1128  * @cmd: The command to get or set Rx flow classification rules
1129  * @rule_locs: Array of used rule locations
1130  *
1131  * This function populates both the total and actual rule count of
1132  * the ethtool flow classification command
1133  *
1134  * Returns 0 on success or -EMSGSIZE if entry not found
1135  **/
1136 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
1137                                      struct ethtool_rxnfc *cmd,
1138                                      u32 *rule_locs)
1139 {
1140         struct i40e_fdir_filter *rule;
1141         struct hlist_node *node2;
1142         int cnt = 0;
1143
1144         /* report total rule count */
1145         cmd->data = pf->hw.fdir_shared_filter_count +
1146                     pf->fdir_pf_filter_count;
1147
1148         hlist_for_each_entry_safe(rule, node2,
1149                                   &pf->fdir_filter_list, fdir_node) {
1150                 if (cnt == cmd->rule_cnt)
1151                         return -EMSGSIZE;
1152
1153                 rule_locs[cnt] = rule->fd_id;
1154                 cnt++;
1155         }
1156
1157         cmd->rule_cnt = cnt;
1158
1159         return 0;
1160 }
1161
1162 /**
1163  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
1164  * @pf: Pointer to the physical function struct
1165  * @cmd: The command to get or set Rx flow classification rules
1166  *
1167  * This function looks up a filter based on the Rx flow classification
1168  * command and fills the flow spec info for it if found
1169  *
1170  * Returns 0 on success or -EINVAL if filter not found
1171  **/
1172 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
1173                                        struct ethtool_rxnfc *cmd)
1174 {
1175         struct ethtool_rx_flow_spec *fsp =
1176                         (struct ethtool_rx_flow_spec *)&cmd->fs;
1177         struct i40e_fdir_filter *rule = NULL;
1178         struct hlist_node *node2;
1179
1180         /* report total rule count */
1181         cmd->data = pf->hw.fdir_shared_filter_count +
1182                     pf->fdir_pf_filter_count;
1183
1184         hlist_for_each_entry_safe(rule, node2,
1185                                   &pf->fdir_filter_list, fdir_node) {
1186                 if (fsp->location <= rule->fd_id)
1187                         break;
1188         }
1189
1190         if (!rule || fsp->location != rule->fd_id)
1191                 return -EINVAL;
1192
1193         fsp->flow_type = rule->flow_type;
1194         if (fsp->flow_type == IP_USER_FLOW) {
1195                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
1196                 fsp->h_u.usr_ip4_spec.proto = 0;
1197                 fsp->m_u.usr_ip4_spec.proto = 0;
1198         }
1199
1200         fsp->h_u.tcp_ip4_spec.psrc = rule->src_port;
1201         fsp->h_u.tcp_ip4_spec.pdst = rule->dst_port;
1202         fsp->h_u.tcp_ip4_spec.ip4src = rule->src_ip[0];
1203         fsp->h_u.tcp_ip4_spec.ip4dst = rule->dst_ip[0];
1204         fsp->ring_cookie = rule->q_index;
1205
1206         return 0;
1207 }
1208
1209 /**
1210  * i40e_get_rxnfc - command to get RX flow classification rules
1211  * @netdev: network interface device structure
1212  * @cmd: ethtool rxnfc command
1213  *
1214  * Returns Success if the command is supported.
1215  **/
1216 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
1217                           u32 *rule_locs)
1218 {
1219         struct i40e_netdev_priv *np = netdev_priv(netdev);
1220         struct i40e_vsi *vsi = np->vsi;
1221         struct i40e_pf *pf = vsi->back;
1222         int ret = -EOPNOTSUPP;
1223
1224         switch (cmd->cmd) {
1225         case ETHTOOL_GRXRINGS:
1226                 cmd->data = vsi->alloc_queue_pairs;
1227                 ret = 0;
1228                 break;
1229         case ETHTOOL_GRXFH:
1230                 ret = i40e_get_rss_hash_opts(pf, cmd);
1231                 break;
1232         case ETHTOOL_GRXCLSRLCNT:
1233                 cmd->rule_cnt = pf->fdir_pf_active_filters;
1234                 ret = 0;
1235                 break;
1236         case ETHTOOL_GRXCLSRULE:
1237                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
1238                 break;
1239         case ETHTOOL_GRXCLSRLALL:
1240                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
1241                 break;
1242         default:
1243                 break;
1244         }
1245
1246         return ret;
1247 }
1248
1249 /**
1250  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
1251  * @pf: pointer to the physical function struct
1252  * @cmd: ethtool rxnfc command
1253  *
1254  * Returns Success if the flow input set is supported.
1255  **/
1256 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
1257 {
1258         struct i40e_hw *hw = &pf->hw;
1259         u64 hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
1260                    ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
1261
1262         /* RSS does not support anything other than hashing
1263          * to queues on src and dst IPs and ports
1264          */
1265         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
1266                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
1267                 return -EINVAL;
1268
1269         /* We need at least the IP SRC and DEST fields for hashing */
1270         if (!(nfc->data & RXH_IP_SRC) ||
1271             !(nfc->data & RXH_IP_DST))
1272                 return -EINVAL;
1273
1274         switch (nfc->flow_type) {
1275         case TCP_V4_FLOW:
1276                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1277                 case 0:
1278                         hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1279                         break;
1280                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1281                         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1282                         break;
1283                 default:
1284                         return -EINVAL;
1285                 }
1286                 break;
1287         case TCP_V6_FLOW:
1288                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1289                 case 0:
1290                         hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1291                         break;
1292                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1293                         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1294                         break;
1295                 default:
1296                         return -EINVAL;
1297                 }
1298                 break;
1299         case UDP_V4_FLOW:
1300                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1301                 case 0:
1302                         hena &=
1303                         ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
1304                         ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
1305                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1306                         break;
1307                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1308                         hena |=
1309                         (((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP)  |
1310                         ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
1311                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1312                         break;
1313                 default:
1314                         return -EINVAL;
1315                 }
1316                 break;
1317         case UDP_V6_FLOW:
1318                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1319                 case 0:
1320                         hena &=
1321                         ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
1322                         ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
1323                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1324                         break;
1325                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1326                         hena |=
1327                         (((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP)  |
1328                         ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
1329                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1330                         break;
1331                 default:
1332                         return -EINVAL;
1333                 }
1334                 break;
1335         case AH_ESP_V4_FLOW:
1336         case AH_V4_FLOW:
1337         case ESP_V4_FLOW:
1338         case SCTP_V4_FLOW:
1339                 if ((nfc->data & RXH_L4_B_0_1) ||
1340                     (nfc->data & RXH_L4_B_2_3))
1341                         return -EINVAL;
1342                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
1343                 break;
1344         case AH_ESP_V6_FLOW:
1345         case AH_V6_FLOW:
1346         case ESP_V6_FLOW:
1347         case SCTP_V6_FLOW:
1348                 if ((nfc->data & RXH_L4_B_0_1) ||
1349                     (nfc->data & RXH_L4_B_2_3))
1350                         return -EINVAL;
1351                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
1352                 break;
1353         case IPV4_FLOW:
1354                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
1355                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4);
1356                 break;
1357         case IPV6_FLOW:
1358                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
1359                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6);
1360                 break;
1361         default:
1362                 return -EINVAL;
1363         }
1364
1365         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
1366         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
1367         i40e_flush(hw);
1368
1369         return 0;
1370 }
1371
1372 /**
1373  * i40e_match_fdir_input_set - Match a new filter against an existing one
1374  * @rule: The filter already added
1375  * @input: The new filter to comapre against
1376  *
1377  * Returns true if the two input set match
1378  **/
1379 static bool i40e_match_fdir_input_set(struct i40e_fdir_filter *rule,
1380                                       struct i40e_fdir_filter *input)
1381 {
1382         if ((rule->dst_ip[0] != input->dst_ip[0]) ||
1383             (rule->src_ip[0] != input->src_ip[0]) ||
1384             (rule->dst_port != input->dst_port) ||
1385             (rule->src_port != input->src_port))
1386                 return false;
1387         return true;
1388 }
1389
1390 /**
1391  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
1392  * @vsi: Pointer to the targeted VSI
1393  * @input: The filter to update or NULL to indicate deletion
1394  * @sw_idx: Software index to the filter
1395  * @cmd: The command to get or set Rx flow classification rules
1396  *
1397  * This function updates (or deletes) a Flow Director entry from
1398  * the hlist of the corresponding PF
1399  *
1400  * Returns 0 on success
1401  **/
1402 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
1403                                           struct i40e_fdir_filter *input,
1404                                           u16 sw_idx,
1405                                           struct ethtool_rxnfc *cmd)
1406 {
1407         struct i40e_fdir_filter *rule, *parent;
1408         struct i40e_pf *pf = vsi->back;
1409         struct hlist_node *node2;
1410         int err = -EINVAL;
1411
1412         parent = NULL;
1413         rule = NULL;
1414
1415         hlist_for_each_entry_safe(rule, node2,
1416                                   &pf->fdir_filter_list, fdir_node) {
1417                 /* hash found, or no matching entry */
1418                 if (rule->fd_id >= sw_idx)
1419                         break;
1420                 parent = rule;
1421         }
1422
1423         /* if there is an old rule occupying our place remove it */
1424         if (rule && (rule->fd_id == sw_idx)) {
1425                 if (input && !i40e_match_fdir_input_set(rule, input))
1426                         err = i40e_add_del_fdir(vsi, rule, false);
1427                 else if (!input)
1428                         err = i40e_add_del_fdir(vsi, rule, false);
1429                 hlist_del(&rule->fdir_node);
1430                 kfree(rule);
1431                 pf->fdir_pf_active_filters--;
1432         }
1433
1434         /* If no input this was a delete, err should be 0 if a rule was
1435          * successfully found and removed from the list else -EINVAL
1436          */
1437         if (!input)
1438                 return err;
1439
1440         /* initialize node and set software index */
1441         INIT_HLIST_NODE(&input->fdir_node);
1442
1443         /* add filter to the list */
1444         if (parent)
1445                 hlist_add_after(&parent->fdir_node, &input->fdir_node);
1446         else
1447                 hlist_add_head(&input->fdir_node,
1448                                &pf->fdir_filter_list);
1449
1450         /* update counts */
1451         pf->fdir_pf_active_filters++;
1452
1453         return 0;
1454 }
1455
1456 /**
1457  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
1458  * @vsi: Pointer to the targeted VSI
1459  * @cmd: The command to get or set Rx flow classification rules
1460  *
1461  * The function removes a Flow Director filter entry from the
1462  * hlist of the corresponding PF
1463  *
1464  * Returns 0 on success
1465  */
1466 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
1467                                struct ethtool_rxnfc *cmd)
1468 {
1469         struct ethtool_rx_flow_spec *fsp =
1470                 (struct ethtool_rx_flow_spec *)&cmd->fs;
1471         struct i40e_pf *pf = vsi->back;
1472         int ret = 0;
1473
1474         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
1475
1476         i40e_fdir_check_and_reenable(pf);
1477         return ret;
1478 }
1479
1480 /**
1481  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
1482  * @vsi: pointer to the targeted VSI
1483  * @cmd: command to get or set RX flow classification rules
1484  *
1485  * Add Flow Director filters for a specific flow spec based on their
1486  * protocol.  Returns 0 if the filters were successfully added.
1487  **/
1488 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
1489                                  struct ethtool_rxnfc *cmd)
1490 {
1491         struct ethtool_rx_flow_spec *fsp;
1492         struct i40e_fdir_filter *input;
1493         struct i40e_pf *pf;
1494         int ret = -EINVAL;
1495
1496         if (!vsi)
1497                 return -EINVAL;
1498
1499         pf = vsi->back;
1500
1501         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
1502                 return -EOPNOTSUPP;
1503
1504         if (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)
1505                 return -ENOSPC;
1506
1507         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1508
1509         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
1510                               pf->hw.func_caps.fd_filters_guaranteed)) {
1511                 return -EINVAL;
1512         }
1513
1514         if (fsp->ring_cookie >= vsi->num_queue_pairs)
1515                 return -EINVAL;
1516
1517         input = kzalloc(sizeof(*input), GFP_KERNEL);
1518
1519         if (!input)
1520                 return -ENOMEM;
1521
1522         input->fd_id = fsp->location;
1523
1524         if (fsp->ring_cookie == RX_CLS_FLOW_DISC)
1525                 input->dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
1526         else
1527                 input->dest_ctl =
1528                              I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
1529
1530         input->q_index = fsp->ring_cookie;
1531         input->flex_off = 0;
1532         input->pctype = 0;
1533         input->dest_vsi = vsi->id;
1534         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
1535         input->cnt_index = 0;
1536         input->flow_type = fsp->flow_type;
1537         input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
1538         input->src_port = fsp->h_u.tcp_ip4_spec.psrc;
1539         input->dst_port = fsp->h_u.tcp_ip4_spec.pdst;
1540         input->src_ip[0] = fsp->h_u.tcp_ip4_spec.ip4src;
1541         input->dst_ip[0] = fsp->h_u.tcp_ip4_spec.ip4dst;
1542
1543         ret = i40e_add_del_fdir(vsi, input, true);
1544         if (ret)
1545                 kfree(input);
1546         else
1547                 i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
1548
1549         return ret;
1550 }
1551
1552 /**
1553  * i40e_set_rxnfc - command to set RX flow classification rules
1554  * @netdev: network interface device structure
1555  * @cmd: ethtool rxnfc command
1556  *
1557  * Returns Success if the command is supported.
1558  **/
1559 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
1560 {
1561         struct i40e_netdev_priv *np = netdev_priv(netdev);
1562         struct i40e_vsi *vsi = np->vsi;
1563         struct i40e_pf *pf = vsi->back;
1564         int ret = -EOPNOTSUPP;
1565
1566         switch (cmd->cmd) {
1567         case ETHTOOL_SRXFH:
1568                 ret = i40e_set_rss_hash_opt(pf, cmd);
1569                 break;
1570         case ETHTOOL_SRXCLSRLINS:
1571                 ret = i40e_add_fdir_ethtool(vsi, cmd);
1572                 break;
1573         case ETHTOOL_SRXCLSRLDEL:
1574                 ret = i40e_del_fdir_entry(vsi, cmd);
1575                 break;
1576         default:
1577                 break;
1578         }
1579
1580         return ret;
1581 }
1582
1583 /**
1584  * i40e_max_channels - get Max number of combined channels supported
1585  * @vsi: vsi pointer
1586  **/
1587 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
1588 {
1589         /* TODO: This code assumes DCB and FD is disabled for now. */
1590         return vsi->alloc_queue_pairs;
1591 }
1592
1593 /**
1594  * i40e_get_channels - Get the current channels enabled and max supported etc.
1595  * @netdev: network interface device structure
1596  * @ch: ethtool channels structure
1597  *
1598  * We don't support separate tx and rx queues as channels. The other count
1599  * represents how many queues are being used for control. max_combined counts
1600  * how many queue pairs we can support. They may not be mapped 1 to 1 with
1601  * q_vectors since we support a lot more queue pairs than q_vectors.
1602  **/
1603 static void i40e_get_channels(struct net_device *dev,
1604                                struct ethtool_channels *ch)
1605 {
1606         struct i40e_netdev_priv *np = netdev_priv(dev);
1607         struct i40e_vsi *vsi = np->vsi;
1608         struct i40e_pf *pf = vsi->back;
1609
1610         /* report maximum channels */
1611         ch->max_combined = i40e_max_channels(vsi);
1612
1613         /* report info for other vector */
1614         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
1615         ch->max_other = ch->other_count;
1616
1617         /* Note: This code assumes DCB is disabled for now. */
1618         ch->combined_count = vsi->num_queue_pairs;
1619 }
1620
1621 /**
1622  * i40e_set_channels - Set the new channels count.
1623  * @netdev: network interface device structure
1624  * @ch: ethtool channels structure
1625  *
1626  * The new channels count may not be the same as requested by the user
1627  * since it gets rounded down to a power of 2 value.
1628  **/
1629 static int i40e_set_channels(struct net_device *dev,
1630                               struct ethtool_channels *ch)
1631 {
1632         struct i40e_netdev_priv *np = netdev_priv(dev);
1633         unsigned int count = ch->combined_count;
1634         struct i40e_vsi *vsi = np->vsi;
1635         struct i40e_pf *pf = vsi->back;
1636         int new_count;
1637
1638         /* We do not support setting channels for any other VSI at present */
1639         if (vsi->type != I40E_VSI_MAIN)
1640                 return -EINVAL;
1641
1642         /* verify they are not requesting separate vectors */
1643         if (!count || ch->rx_count || ch->tx_count)
1644                 return -EINVAL;
1645
1646         /* verify other_count has not changed */
1647         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
1648                 return -EINVAL;
1649
1650         /* verify the number of channels does not exceed hardware limits */
1651         if (count > i40e_max_channels(vsi))
1652                 return -EINVAL;
1653
1654         /* update feature limits from largest to smallest supported values */
1655         /* TODO: Flow director limit, DCB etc */
1656
1657         /* cap RSS limit */
1658         if (count > pf->rss_size_max)
1659                 count = pf->rss_size_max;
1660
1661         /* use rss_reconfig to rebuild with new queue count and update traffic
1662          * class queue mapping
1663          */
1664         new_count = i40e_reconfig_rss_queues(pf, count);
1665         if (new_count > 0)
1666                 return 0;
1667         else
1668                 return -EINVAL;
1669 }
1670
1671 static const struct ethtool_ops i40e_ethtool_ops = {
1672         .get_settings           = i40e_get_settings,
1673         .get_drvinfo            = i40e_get_drvinfo,
1674         .get_regs_len           = i40e_get_regs_len,
1675         .get_regs               = i40e_get_regs,
1676         .nway_reset             = i40e_nway_reset,
1677         .get_link               = ethtool_op_get_link,
1678         .get_wol                = i40e_get_wol,
1679         .set_wol                = i40e_set_wol,
1680         .get_eeprom_len         = i40e_get_eeprom_len,
1681         .get_eeprom             = i40e_get_eeprom,
1682         .get_ringparam          = i40e_get_ringparam,
1683         .set_ringparam          = i40e_set_ringparam,
1684         .get_pauseparam         = i40e_get_pauseparam,
1685         .get_msglevel           = i40e_get_msglevel,
1686         .set_msglevel           = i40e_set_msglevel,
1687         .get_rxnfc              = i40e_get_rxnfc,
1688         .set_rxnfc              = i40e_set_rxnfc,
1689         .self_test              = i40e_diag_test,
1690         .get_strings            = i40e_get_strings,
1691         .set_phys_id            = i40e_set_phys_id,
1692         .get_sset_count         = i40e_get_sset_count,
1693         .get_ethtool_stats      = i40e_get_ethtool_stats,
1694         .get_coalesce           = i40e_get_coalesce,
1695         .set_coalesce           = i40e_set_coalesce,
1696         .get_channels           = i40e_get_channels,
1697         .set_channels           = i40e_set_channels,
1698         .get_ts_info            = i40e_get_ts_info,
1699 };
1700
1701 void i40e_set_ethtool_ops(struct net_device *netdev)
1702 {
1703         SET_ETHTOOL_OPS(netdev, &i40e_ethtool_ops);
1704 }