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 const struct i40e_stats i40e_gstrings_misc_stats[] = {
  66         I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
  67         I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
  68         I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
  69 };
  70
  71 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
  72                                  struct ethtool_rxnfc *cmd);
  73
  74 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
  75  * but they are separate.  This device supports Virtualization, and
  76  * as such might have several netdevs supporting VMDq and FCoE going
  77  * through a single port.  The NETDEV_STATs are for individual netdevs
  78  * seen at the top of the stack, and the PF_STATs are for the physical
  79  * function at the bottom of the stack hosting those netdevs.
  80  *
  81  * The PF_STATs are appended to the netdev stats only when ethtool -S
  82  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
  83  */
  84 static struct i40e_stats i40e_gstrings_stats[] = {
  85         I40E_PF_STAT("rx_bytes", stats.eth.rx_bytes),
  86         I40E_PF_STAT("tx_bytes", stats.eth.tx_bytes),
  87         I40E_PF_STAT("tx_errors", stats.eth.tx_errors),
  88         I40E_PF_STAT("rx_dropped", stats.eth.rx_discards),
  89         I40E_PF_STAT("tx_dropped", stats.eth.tx_discards),
  90         I40E_PF_STAT("tx_dropped_link_down", stats.tx_dropped_link_down),
  91         I40E_PF_STAT("crc_errors", stats.crc_errors),
  92         I40E_PF_STAT("illegal_bytes", stats.illegal_bytes),
  93         I40E_PF_STAT("mac_local_faults", stats.mac_local_faults),
  94         I40E_PF_STAT("mac_remote_faults", stats.mac_remote_faults),
  95         I40E_PF_STAT("tx_timeout", tx_timeout_count),
  96         I40E_PF_STAT("rx_length_errors", stats.rx_length_errors),
  97         I40E_PF_STAT("link_xon_rx", stats.link_xon_rx),
  98         I40E_PF_STAT("link_xoff_rx", stats.link_xoff_rx),
  99         I40E_PF_STAT("link_xon_tx", stats.link_xon_tx),
 100         I40E_PF_STAT("link_xoff_tx", stats.link_xoff_tx),
 101         I40E_PF_STAT("rx_size_64", stats.rx_size_64),
 102         I40E_PF_STAT("rx_size_127", stats.rx_size_127),
 103         I40E_PF_STAT("rx_size_255", stats.rx_size_255),
 104         I40E_PF_STAT("rx_size_511", stats.rx_size_511),
 105         I40E_PF_STAT("rx_size_1023", stats.rx_size_1023),
 106         I40E_PF_STAT("rx_size_1522", stats.rx_size_1522),
 107         I40E_PF_STAT("rx_size_big", stats.rx_size_big),
 108         I40E_PF_STAT("tx_size_64", stats.tx_size_64),
 109         I40E_PF_STAT("tx_size_127", stats.tx_size_127),
 110         I40E_PF_STAT("tx_size_255", stats.tx_size_255),
 111         I40E_PF_STAT("tx_size_511", stats.tx_size_511),
 112         I40E_PF_STAT("tx_size_1023", stats.tx_size_1023),
 113         I40E_PF_STAT("tx_size_1522", stats.tx_size_1522),
 114         I40E_PF_STAT("tx_size_big", stats.tx_size_big),
 115         I40E_PF_STAT("rx_undersize", stats.rx_undersize),
 116         I40E_PF_STAT("rx_fragments", stats.rx_fragments),
 117         I40E_PF_STAT("rx_oversize", stats.rx_oversize),
 118         I40E_PF_STAT("rx_jabber", stats.rx_jabber),
 119         I40E_PF_STAT("VF_admin_queue_requests", vf_aq_requests),
 120         I40E_PF_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
 121         /* LPI stats */
 122         I40E_PF_STAT("tx_lpi_status", stats.tx_lpi_status),
 123         I40E_PF_STAT("rx_lpi_status", stats.rx_lpi_status),
 124         I40E_PF_STAT("tx_lpi_count", stats.tx_lpi_count),
 125         I40E_PF_STAT("rx_lpi_count", stats.rx_lpi_count),
 126 };
 127
 128 #define I40E_QUEUE_STATS_LEN(n) \
 129         (((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs \
 130             * 2 /* Tx and Rx together */                                     \
 131             * (sizeof(struct i40e_queue_stats) / sizeof(u64)))
 132 #define I40E_GLOBAL_STATS_LEN   ARRAY_SIZE(i40e_gstrings_stats)
 133 #define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
 134 #define I40E_MISC_STATS_LEN     ARRAY_SIZE(i40e_gstrings_misc_stats)
 135 #define I40E_VSI_STATS_LEN(n)   (I40E_NETDEV_STATS_LEN + \
 136                                  I40E_MISC_STATS_LEN + \
 137                                  I40E_QUEUE_STATS_LEN((n)))
 138 #define I40E_PFC_STATS_LEN ( \
 139                 (FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_rx) + \
 140                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_rx) + \
 141                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_tx) + \
 142                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_tx) + \
 143                  FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_2_xoff)) \
 144                  / sizeof(u64))
 145 #define I40E_PF_STATS_LEN(n)    (I40E_GLOBAL_STATS_LEN + \
 146                                  I40E_PFC_STATS_LEN + \
 147                                  I40E_VSI_STATS_LEN((n)))
 148
 149 enum i40e_ethtool_test_id {
 150         I40E_ETH_TEST_REG = 0,
 151         I40E_ETH_TEST_EEPROM,
 152         I40E_ETH_TEST_INTR,
 153         I40E_ETH_TEST_LOOPBACK,
 154         I40E_ETH_TEST_LINK,
 155 };
 156
 157 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
 158         "Register test  (offline)",
 159         "Eeprom test    (offline)",
 160         "Interrupt test (offline)",
 161         "Loopback test  (offline)",
 162         "Link test   (on/offline)"
 163 };
 164
 165 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
 166
 167 /**
 168  * i40e_get_settings - Get Link Speed and Duplex settings
 169  * @netdev: network interface device structure
 170  * @ecmd: ethtool command
 171  *
 172  * Reports speed/duplex settings based on media_type
 173  **/
 174 static int i40e_get_settings(struct net_device *netdev,
 175                              struct ethtool_cmd *ecmd)
 176 {
 177         struct i40e_netdev_priv *np = netdev_priv(netdev);
 178         struct i40e_pf *pf = np->vsi->back;
 179         struct i40e_hw *hw = &pf->hw;
 180         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 181         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
 182         u32 link_speed = hw_link_info->link_speed;
 183
 184         /* hardware is either in 40G mode or 10G mode
 185          * NOTE: this section initializes supported and advertising
 186          */
 187         switch (hw_link_info->phy_type) {
 188         case I40E_PHY_TYPE_40GBASE_CR4:
 189         case I40E_PHY_TYPE_40GBASE_CR4_CU:
 190                 ecmd->supported = SUPPORTED_40000baseCR4_Full;
 191                 ecmd->advertising = ADVERTISED_40000baseCR4_Full;
 192                 break;
 193         case I40E_PHY_TYPE_40GBASE_KR4:
 194                 ecmd->supported = SUPPORTED_40000baseKR4_Full;
 195                 ecmd->advertising = ADVERTISED_40000baseKR4_Full;
 196                 break;
 197         case I40E_PHY_TYPE_40GBASE_SR4:
 198                 ecmd->supported = SUPPORTED_40000baseSR4_Full;
 199                 ecmd->advertising = ADVERTISED_40000baseSR4_Full;
 200                 break;
 201         case I40E_PHY_TYPE_40GBASE_LR4:
 202                 ecmd->supported = SUPPORTED_40000baseLR4_Full;
 203                 ecmd->advertising = ADVERTISED_40000baseLR4_Full;
 204                 break;
 205         case I40E_PHY_TYPE_10GBASE_KX4:
 206                 ecmd->supported = SUPPORTED_10000baseKX4_Full;
 207                 ecmd->advertising = ADVERTISED_10000baseKX4_Full;
 208                 break;
 209         case I40E_PHY_TYPE_10GBASE_KR:
 210                 ecmd->supported = SUPPORTED_10000baseKR_Full;
 211                 ecmd->advertising = ADVERTISED_10000baseKR_Full;
 212                 break;
 213         default:
 214                 if (i40e_is_40G_device(hw->device_id)) {
 215                         ecmd->supported = SUPPORTED_40000baseSR4_Full;
 216                         ecmd->advertising = ADVERTISED_40000baseSR4_Full;
 217                 } else {
 218                         ecmd->supported = SUPPORTED_10000baseT_Full;
 219                         ecmd->advertising = ADVERTISED_10000baseT_Full;
 220                 }
 221                 break;
 222         }
 223
 224         ecmd->supported |= SUPPORTED_Autoneg;
 225         ecmd->advertising |= ADVERTISED_Autoneg;
 226         ecmd->autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 227                           AUTONEG_ENABLE : AUTONEG_DISABLE);
 228
 229         switch (hw->phy.media_type) {
 230         case I40E_MEDIA_TYPE_BACKPLANE:
 231                 ecmd->supported |= SUPPORTED_Backplane;
 232                 ecmd->advertising |= ADVERTISED_Backplane;
 233                 ecmd->port = PORT_NONE;
 234                 break;
 235         case I40E_MEDIA_TYPE_BASET:
 236                 ecmd->supported |= SUPPORTED_TP;
 237                 ecmd->advertising |= ADVERTISED_TP;
 238                 ecmd->port = PORT_TP;
 239                 break;
 240         case I40E_MEDIA_TYPE_DA:
 241         case I40E_MEDIA_TYPE_CX4:
 242                 ecmd->supported |= SUPPORTED_FIBRE;
 243                 ecmd->advertising |= ADVERTISED_FIBRE;
 244                 ecmd->port = PORT_DA;
 245                 break;
 246         case I40E_MEDIA_TYPE_FIBER:
 247                 ecmd->supported |= SUPPORTED_FIBRE;
 248                 ecmd->advertising |= ADVERTISED_FIBRE;
 249                 ecmd->port = PORT_FIBRE;
 250                 break;
 251         case I40E_MEDIA_TYPE_UNKNOWN:
 252         default:
 253                 ecmd->port = PORT_OTHER;
 254                 break;
 255         }
 256
 257         ecmd->transceiver = XCVR_EXTERNAL;
 258
 259         if (link_up) {
 260                 switch (link_speed) {
 261                 case I40E_LINK_SPEED_40GB:
 262                         /* need a SPEED_40000 in ethtool.h */
 263                         ethtool_cmd_speed_set(ecmd, 40000);
 264                         break;
 265                 case I40E_LINK_SPEED_10GB:
 266                         ethtool_cmd_speed_set(ecmd, SPEED_10000);
 267                         break;
 268                 default:
 269                         break;
 270                 }
 271                 ecmd->duplex = DUPLEX_FULL;
 272         } else {
 273                 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
 274                 ecmd->duplex = DUPLEX_UNKNOWN;
 275         }
 276
 277         return 0;
 278 }
 279
 280 /**
 281  * i40e_get_pauseparam -  Get Flow Control status
 282  * Return tx/rx-pause status
 283  **/
 284 static void i40e_get_pauseparam(struct net_device *netdev,
 285                                 struct ethtool_pauseparam *pause)
 286 {
 287         struct i40e_netdev_priv *np = netdev_priv(netdev);
 288         struct i40e_pf *pf = np->vsi->back;
 289         struct i40e_hw *hw = &pf->hw;
 290         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 291
 292         pause->autoneg =
 293                 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 294                   AUTONEG_ENABLE : AUTONEG_DISABLE);
 295
 296         if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
 297                 pause->rx_pause = 1;
 298         } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
 299                 pause->tx_pause = 1;
 300         } else if (hw->fc.current_mode == I40E_FC_FULL) {
 301                 pause->rx_pause = 1;
 302                 pause->tx_pause = 1;
 303         }
 304 }
 305
 306 static u32 i40e_get_msglevel(struct net_device *netdev)
 307 {
 308         struct i40e_netdev_priv *np = netdev_priv(netdev);
 309         struct i40e_pf *pf = np->vsi->back;
 310
 311         return pf->msg_enable;
 312 }
 313
 314 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
 315 {
 316         struct i40e_netdev_priv *np = netdev_priv(netdev);
 317         struct i40e_pf *pf = np->vsi->back;
 318
 319         if (I40E_DEBUG_USER & data)
 320                 pf->hw.debug_mask = data;
 321         pf->msg_enable = data;
 322 }
 323
 324 static int i40e_get_regs_len(struct net_device *netdev)
 325 {
 326         int reg_count = 0;
 327         int i;
 328
 329         for (i = 0; i40e_reg_list[i].offset != 0; i++)
 330                 reg_count += i40e_reg_list[i].elements;
 331
 332         return reg_count * sizeof(u32);
 333 }
 334
 335 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
 336                           void *p)
 337 {
 338         struct i40e_netdev_priv *np = netdev_priv(netdev);
 339         struct i40e_pf *pf = np->vsi->back;
 340         struct i40e_hw *hw = &pf->hw;
 341         u32 *reg_buf = p;
 342         int i, j, ri;
 343         u32 reg;
 344
 345         /* Tell ethtool which driver-version-specific regs output we have.
 346          *
 347          * At some point, if we have ethtool doing special formatting of
 348          * this data, it will rely on this version number to know how to
 349          * interpret things.  Hence, this needs to be updated if/when the
 350          * diags register table is changed.
 351          */
 352         regs->version = 1;
 353
 354         /* loop through the diags reg table for what to print */
 355         ri = 0;
 356         for (i = 0; i40e_reg_list[i].offset != 0; i++) {
 357                 for (j = 0; j < i40e_reg_list[i].elements; j++) {
 358                         reg = i40e_reg_list[i].offset
 359                                 + (j * i40e_reg_list[i].stride);
 360                         reg_buf[ri++] = rd32(hw, reg);
 361                 }
 362         }
 363
 364 }
 365
 366 static int i40e_get_eeprom(struct net_device *netdev,
 367                            struct ethtool_eeprom *eeprom, u8 *bytes)
 368 {
 369         struct i40e_netdev_priv *np = netdev_priv(netdev);
 370         struct i40e_hw *hw = &np->vsi->back->hw;
 371         struct i40e_pf *pf = np->vsi->back;
 372         int ret_val = 0, len;
 373         u8 *eeprom_buff;
 374         u16 i, sectors;
 375         bool last;
 376 #define I40E_NVM_SECTOR_SIZE  4096
 377         if (eeprom->len == 0)
 378                 return -EINVAL;
 379
 380         eeprom->magic = hw->vendor_id | (hw->device_id << 16);
 381
 382         eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
 383         if (!eeprom_buff)
 384                 return -ENOMEM;
 385
 386         ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
 387         if (ret_val) {
 388                 dev_info(&pf->pdev->dev,
 389                          "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
 390                          ret_val, hw->aq.asq_last_status);
 391                 goto free_buff;
 392         }
 393
 394         sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
 395         sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
 396         len = I40E_NVM_SECTOR_SIZE;
 397         last = false;
 398         for (i = 0; i < sectors; i++) {
 399                 if (i == (sectors - 1)) {
 400                         len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
 401                         last = true;
 402                 }
 403                 ret_val = i40e_aq_read_nvm(hw, 0x0,
 404                                 eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
 405                                 len,
 406                                 eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
 407                                 last, NULL);
 408                 if (ret_val) {
 409                         dev_info(&pf->pdev->dev,
 410                                  "read NVM failed err=%d status=0x%x\n",
 411                                  ret_val, hw->aq.asq_last_status);
 412                         goto release_nvm;
 413                 }
 414         }
 415
 416 release_nvm:
 417         i40e_release_nvm(hw);
 418         memcpy(bytes, eeprom_buff, eeprom->len);
 419 free_buff:
 420         kfree(eeprom_buff);
 421         return ret_val;
 422 }
 423
 424 static int i40e_get_eeprom_len(struct net_device *netdev)
 425 {
 426         struct i40e_netdev_priv *np = netdev_priv(netdev);
 427         struct i40e_hw *hw = &np->vsi->back->hw;
 428         u32 val;
 429
 430         val = (rd32(hw, I40E_GLPCI_LBARCTRL)
 431                 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
 432                 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
 433         /* register returns value in power of 2, 64Kbyte chunks. */
 434         val = (64 * 1024) * (1 << val);
 435         return val;
 436 }
 437
 438 static void i40e_get_drvinfo(struct net_device *netdev,
 439                              struct ethtool_drvinfo *drvinfo)
 440 {
 441         struct i40e_netdev_priv *np = netdev_priv(netdev);
 442         struct i40e_vsi *vsi = np->vsi;
 443         struct i40e_pf *pf = vsi->back;
 444
 445         strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
 446         strlcpy(drvinfo->version, i40e_driver_version_str,
 447                 sizeof(drvinfo->version));
 448         strlcpy(drvinfo->fw_version, i40e_fw_version_str(&pf->hw),
 449                 sizeof(drvinfo->fw_version));
 450         strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
 451                 sizeof(drvinfo->bus_info));
 452 }
 453
 454 static void i40e_get_ringparam(struct net_device *netdev,
 455                                struct ethtool_ringparam *ring)
 456 {
 457         struct i40e_netdev_priv *np = netdev_priv(netdev);
 458         struct i40e_pf *pf = np->vsi->back;
 459         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 460
 461         ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
 462         ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
 463         ring->rx_mini_max_pending = 0;
 464         ring->rx_jumbo_max_pending = 0;
 465         ring->rx_pending = vsi->rx_rings[0]->count;
 466         ring->tx_pending = vsi->tx_rings[0]->count;
 467         ring->rx_mini_pending = 0;
 468         ring->rx_jumbo_pending = 0;
 469 }
 470
 471 static int i40e_set_ringparam(struct net_device *netdev,
 472                               struct ethtool_ringparam *ring)
 473 {
 474         struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
 475         struct i40e_netdev_priv *np = netdev_priv(netdev);
 476         struct i40e_vsi *vsi = np->vsi;
 477         struct i40e_pf *pf = vsi->back;
 478         u32 new_rx_count, new_tx_count;
 479         int i, err = 0;
 480
 481         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 482                 return -EINVAL;
 483
 484         if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
 485             ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
 486             ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
 487             ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
 488                 netdev_info(netdev,
 489                             "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
 490                             ring->tx_pending, ring->rx_pending,
 491                             I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
 492                 return -EINVAL;
 493         }
 494
 495         new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
 496         new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
 497
 498         /* if nothing to do return success */
 499         if ((new_tx_count == vsi->tx_rings[0]->count) &&
 500             (new_rx_count == vsi->rx_rings[0]->count))
 501                 return 0;
 502
 503         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
 504                 usleep_range(1000, 2000);
 505
 506         if (!netif_running(vsi->netdev)) {
 507                 /* simple case - set for the next time the netdev is started */
 508                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 509                         vsi->tx_rings[i]->count = new_tx_count;
 510                         vsi->rx_rings[i]->count = new_rx_count;
 511                 }
 512                 goto done;
 513         }
 514
 515         /* We can't just free everything and then setup again,
 516          * because the ISRs in MSI-X mode get passed pointers
 517          * to the Tx and Rx ring structs.
 518          */
 519
 520         /* alloc updated Tx resources */
 521         if (new_tx_count != vsi->tx_rings[0]->count) {
 522                 netdev_info(netdev,
 523                             "Changing Tx descriptor count from %d to %d.\n",
 524                             vsi->tx_rings[0]->count, new_tx_count);
 525                 tx_rings = kcalloc(vsi->alloc_queue_pairs,
 526                                    sizeof(struct i40e_ring), GFP_KERNEL);
 527                 if (!tx_rings) {
 528                         err = -ENOMEM;
 529                         goto done;
 530                 }
 531
 532                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 533                         /* clone ring and setup updated count */
 534                         tx_rings[i] = *vsi->tx_rings[i];
 535                         tx_rings[i].count = new_tx_count;
 536                         err = i40e_setup_tx_descriptors(&tx_rings[i]);
 537                         if (err) {
 538                                 while (i) {
 539                                         i--;
 540                                         i40e_free_tx_resources(&tx_rings[i]);
 541                                 }
 542                                 kfree(tx_rings);
 543                                 tx_rings = NULL;
 544
 545                                 goto done;
 546                         }
 547                 }
 548         }
 549
 550         /* alloc updated Rx resources */
 551         if (new_rx_count != vsi->rx_rings[0]->count) {
 552                 netdev_info(netdev,
 553                             "Changing Rx descriptor count from %d to %d\n",
 554                             vsi->rx_rings[0]->count, new_rx_count);
 555                 rx_rings = kcalloc(vsi->alloc_queue_pairs,
 556                                    sizeof(struct i40e_ring), GFP_KERNEL);
 557                 if (!rx_rings) {
 558                         err = -ENOMEM;
 559                         goto free_tx;
 560                 }
 561
 562                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 563                         /* clone ring and setup updated count */
 564                         rx_rings[i] = *vsi->rx_rings[i];
 565                         rx_rings[i].count = new_rx_count;
 566                         err = i40e_setup_rx_descriptors(&rx_rings[i]);
 567                         if (err) {
 568                                 while (i) {
 569                                         i--;
 570                                         i40e_free_rx_resources(&rx_rings[i]);
 571                                 }
 572                                 kfree(rx_rings);
 573                                 rx_rings = NULL;
 574
 575                                 goto free_tx;
 576                         }
 577                 }
 578         }
 579
 580         /* Bring interface down, copy in the new ring info,
 581          * then restore the interface
 582          */
 583         i40e_down(vsi);
 584
 585         if (tx_rings) {
 586                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 587                         i40e_free_tx_resources(vsi->tx_rings[i]);
 588                         *vsi->tx_rings[i] = tx_rings[i];
 589                 }
 590                 kfree(tx_rings);
 591                 tx_rings = NULL;
 592         }
 593
 594         if (rx_rings) {
 595                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 596                         i40e_free_rx_resources(vsi->rx_rings[i]);
 597                         *vsi->rx_rings[i] = rx_rings[i];
 598                 }
 599                 kfree(rx_rings);
 600                 rx_rings = NULL;
 601         }
 602
 603         i40e_up(vsi);
 604
 605 free_tx:
 606         /* error cleanup if the Rx allocations failed after getting Tx */
 607         if (tx_rings) {
 608                 for (i = 0; i < vsi->num_queue_pairs; i++)
 609                         i40e_free_tx_resources(&tx_rings[i]);
 610                 kfree(tx_rings);
 611                 tx_rings = NULL;
 612         }
 613
 614 done:
 615         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
 616
 617         return err;
 618 }
 619
 620 static int i40e_get_sset_count(struct net_device *netdev, int sset)
 621 {
 622         struct i40e_netdev_priv *np = netdev_priv(netdev);
 623         struct i40e_vsi *vsi = np->vsi;
 624         struct i40e_pf *pf = vsi->back;
 625
 626         switch (sset) {
 627         case ETH_SS_TEST:
 628                 return I40E_TEST_LEN;
 629         case ETH_SS_STATS:
 630                 if (vsi == pf->vsi[pf->lan_vsi])
 631                         return I40E_PF_STATS_LEN(netdev);
 632                 else
 633                         return I40E_VSI_STATS_LEN(netdev);
 634         default:
 635                 return -EOPNOTSUPP;
 636         }
 637 }
 638
 639 static void i40e_get_ethtool_stats(struct net_device *netdev,
 640                                    struct ethtool_stats *stats, u64 *data)
 641 {
 642         struct i40e_netdev_priv *np = netdev_priv(netdev);
 643         struct i40e_ring *tx_ring, *rx_ring;
 644         struct i40e_vsi *vsi = np->vsi;
 645         struct i40e_pf *pf = vsi->back;
 646         int i = 0;
 647         char *p;
 648         int j;
 649         struct rtnl_link_stats64 *net_stats = i40e_get_vsi_stats_struct(vsi);
 650         unsigned int start;
 651
 652         i40e_update_stats(vsi);
 653
 654         for (j = 0; j < I40E_NETDEV_STATS_LEN; j++) {
 655                 p = (char *)net_stats + i40e_gstrings_net_stats[j].stat_offset;
 656                 data[i++] = (i40e_gstrings_net_stats[j].sizeof_stat ==
 657                         sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 658         }
 659         for (j = 0; j < I40E_MISC_STATS_LEN; j++) {
 660                 p = (char *)vsi + i40e_gstrings_misc_stats[j].stat_offset;
 661                 data[i++] = (i40e_gstrings_misc_stats[j].sizeof_stat ==
 662                             sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 663         }
 664         rcu_read_lock();
 665         for (j = 0; j < vsi->num_queue_pairs; j++) {
 666                 tx_ring = ACCESS_ONCE(vsi->tx_rings[j]);
 667
 668                 if (!tx_ring)
 669                         continue;
 670
 671                 /* process Tx ring statistics */
 672                 do {
 673                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 674                         data[i] = tx_ring->stats.packets;
 675                         data[i + 1] = tx_ring->stats.bytes;
 676                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 677                 i += 2;
 678
 679                 /* Rx ring is the 2nd half of the queue pair */
 680                 rx_ring = &tx_ring[1];
 681                 do {
 682                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 683                         data[i] = rx_ring->stats.packets;
 684                         data[i + 1] = rx_ring->stats.bytes;
 685                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 686                 i += 2;
 687         }
 688         rcu_read_unlock();
 689         if (vsi == pf->vsi[pf->lan_vsi]) {
 690                 for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) {
 691                         p = (char *)pf + i40e_gstrings_stats[j].stat_offset;
 692                         data[i++] = (i40e_gstrings_stats[j].sizeof_stat ==
 693                                    sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 694                 }
 695                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
 696                         data[i++] = pf->stats.priority_xon_tx[j];
 697                         data[i++] = pf->stats.priority_xoff_tx[j];
 698                 }
 699                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
 700                         data[i++] = pf->stats.priority_xon_rx[j];
 701                         data[i++] = pf->stats.priority_xoff_rx[j];
 702                 }
 703                 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++)
 704                         data[i++] = pf->stats.priority_xon_2_xoff[j];
 705         }
 706 }
 707
 708 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
 709                              u8 *data)
 710 {
 711         struct i40e_netdev_priv *np = netdev_priv(netdev);
 712         struct i40e_vsi *vsi = np->vsi;
 713         struct i40e_pf *pf = vsi->back;
 714         char *p = (char *)data;
 715         int i;
 716
 717         switch (stringset) {
 718         case ETH_SS_TEST:
 719                 for (i = 0; i < I40E_TEST_LEN; i++) {
 720                         memcpy(data, i40e_gstrings_test[i], ETH_GSTRING_LEN);
 721                         data += ETH_GSTRING_LEN;
 722                 }
 723                 break;
 724         case ETH_SS_STATS:
 725                 for (i = 0; i < I40E_NETDEV_STATS_LEN; i++) {
 726                         snprintf(p, ETH_GSTRING_LEN, "%s",
 727                                  i40e_gstrings_net_stats[i].stat_string);
 728                         p += ETH_GSTRING_LEN;
 729                 }
 730                 for (i = 0; i < I40E_MISC_STATS_LEN; i++) {
 731                         snprintf(p, ETH_GSTRING_LEN, "%s",
 732                                  i40e_gstrings_misc_stats[i].stat_string);
 733                         p += ETH_GSTRING_LEN;
 734                 }
 735                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 736                         snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_packets", i);
 737                         p += ETH_GSTRING_LEN;
 738                         snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_bytes", i);
 739                         p += ETH_GSTRING_LEN;
 740                         snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_packets", i);
 741                         p += ETH_GSTRING_LEN;
 742                         snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_bytes", i);
 743                         p += ETH_GSTRING_LEN;
 744                 }
 745                 if (vsi == pf->vsi[pf->lan_vsi]) {
 746                         for (i = 0; i < I40E_GLOBAL_STATS_LEN; i++) {
 747                                 snprintf(p, ETH_GSTRING_LEN, "port.%s",
 748                                          i40e_gstrings_stats[i].stat_string);
 749                                 p += ETH_GSTRING_LEN;
 750                         }
 751                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 752                                 snprintf(p, ETH_GSTRING_LEN,
 753                                          "port.tx_priority_%u_xon", i);
 754                                 p += ETH_GSTRING_LEN;
 755                                 snprintf(p, ETH_GSTRING_LEN,
 756                                          "port.tx_priority_%u_xoff", i);
 757                                 p += ETH_GSTRING_LEN;
 758                         }
 759                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 760                                 snprintf(p, ETH_GSTRING_LEN,
 761                                          "port.rx_priority_%u_xon", i);
 762                                 p += ETH_GSTRING_LEN;
 763                                 snprintf(p, ETH_GSTRING_LEN,
 764                                          "port.rx_priority_%u_xoff", i);
 765                                 p += ETH_GSTRING_LEN;
 766                         }
 767                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 768                                 snprintf(p, ETH_GSTRING_LEN,
 769                                          "port.rx_priority_%u_xon_2_xoff", i);
 770                                 p += ETH_GSTRING_LEN;
 771                         }
 772                 }
 773                 /* BUG_ON(p - data != I40E_STATS_LEN * ETH_GSTRING_LEN); */
 774                 break;
 775         }
 776 }
 777
 778 static int i40e_get_ts_info(struct net_device *dev,
 779                             struct ethtool_ts_info *info)
 780 {
 781         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
 782
 783         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
 784                                 SOF_TIMESTAMPING_RX_SOFTWARE |
 785                                 SOF_TIMESTAMPING_SOFTWARE |
 786                                 SOF_TIMESTAMPING_TX_HARDWARE |
 787                                 SOF_TIMESTAMPING_RX_HARDWARE |
 788                                 SOF_TIMESTAMPING_RAW_HARDWARE;
 789
 790         if (pf->ptp_clock)
 791                 info->phc_index = ptp_clock_index(pf->ptp_clock);
 792         else
 793                 info->phc_index = -1;
 794
 795         info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
 796
 797         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
 798                            (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
 799                            (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
 800                            (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
 801                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
 802                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
 803                            (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
 804                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
 805                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
 806                            (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
 807                            (1 << HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
 808                            (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
 809
 810         return 0;
 811 }
 812
 813 static int i40e_link_test(struct net_device *netdev, u64 *data)
 814 {
 815         struct i40e_netdev_priv *np = netdev_priv(netdev);
 816         struct i40e_pf *pf = np->vsi->back;
 817
 818         netif_info(pf, hw, netdev, "link test\n");
 819         if (i40e_get_link_status(&pf->hw))
 820                 *data = 0;
 821         else
 822                 *data = 1;
 823
 824         return *data;
 825 }
 826
 827 static int i40e_reg_test(struct net_device *netdev, u64 *data)
 828 {
 829         struct i40e_netdev_priv *np = netdev_priv(netdev);
 830         struct i40e_pf *pf = np->vsi->back;
 831
 832         netif_info(pf, hw, netdev, "register test\n");
 833         *data = i40e_diag_reg_test(&pf->hw);
 834
 835         return *data;
 836 }
 837
 838 static int i40e_eeprom_test(struct net_device *netdev, u64 *data)
 839 {
 840         struct i40e_netdev_priv *np = netdev_priv(netdev);
 841         struct i40e_pf *pf = np->vsi->back;
 842
 843         netif_info(pf, hw, netdev, "eeprom test\n");
 844         *data = i40e_diag_eeprom_test(&pf->hw);
 845
 846         return *data;
 847 }
 848
 849 static int i40e_intr_test(struct net_device *netdev, u64 *data)
 850 {
 851         struct i40e_netdev_priv *np = netdev_priv(netdev);
 852         struct i40e_pf *pf = np->vsi->back;
 853         u16 swc_old = pf->sw_int_count;
 854
 855         netif_info(pf, hw, netdev, "interrupt test\n");
 856         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
 857              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
 858               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
 859         usleep_range(1000, 2000);
 860         *data = (swc_old == pf->sw_int_count);
 861
 862         return *data;
 863 }
 864
 865 static int i40e_loopback_test(struct net_device *netdev, u64 *data)
 866 {
 867         struct i40e_netdev_priv *np = netdev_priv(netdev);
 868         struct i40e_pf *pf = np->vsi->back;
 869
 870         netif_info(pf, hw, netdev, "loopback test not implemented\n");
 871         *data = 0;
 872
 873         return *data;
 874 }
 875
 876 static void i40e_diag_test(struct net_device *netdev,
 877                            struct ethtool_test *eth_test, u64 *data)
 878 {
 879         struct i40e_netdev_priv *np = netdev_priv(netdev);
 880         struct i40e_pf *pf = np->vsi->back;
 881
 882         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
 883                 /* Offline tests */
 884                 netif_info(pf, drv, netdev, "offline testing starting\n");
 885
 886                 set_bit(__I40E_TESTING, &pf->state);
 887
 888                 /* Link test performed before hardware reset
 889                  * so autoneg doesn't interfere with test result
 890                  */
 891                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
 892                         eth_test->flags |= ETH_TEST_FL_FAILED;
 893
 894                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
 895                         eth_test->flags |= ETH_TEST_FL_FAILED;
 896
 897                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
 898                         eth_test->flags |= ETH_TEST_FL_FAILED;
 899
 900                 if (i40e_loopback_test(netdev, &data[I40E_ETH_TEST_LOOPBACK]))
 901                         eth_test->flags |= ETH_TEST_FL_FAILED;
 902
 903                 /* run reg test last, a reset is required after it */
 904                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
 905                         eth_test->flags |= ETH_TEST_FL_FAILED;
 906
 907                 clear_bit(__I40E_TESTING, &pf->state);
 908                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
 909         } else {
 910                 /* Online tests */
 911                 netif_info(pf, drv, netdev, "online testing starting\n");
 912
 913                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
 914                         eth_test->flags |= ETH_TEST_FL_FAILED;
 915
 916                 /* Offline only tests, not run in online; pass by default */
 917                 data[I40E_ETH_TEST_REG] = 0;
 918                 data[I40E_ETH_TEST_EEPROM] = 0;
 919                 data[I40E_ETH_TEST_INTR] = 0;
 920                 data[I40E_ETH_TEST_LOOPBACK] = 0;
 921         }
 922
 923         netif_info(pf, drv, netdev, "testing finished\n");
 924 }
 925
 926 static void i40e_get_wol(struct net_device *netdev,
 927                          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                 wol->supported = 0;
 938                 wol->wolopts = 0;
 939         } else {
 940                 wol->supported = WAKE_MAGIC;
 941                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
 942         }
 943 }
 944
 945 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 946 {
 947         struct i40e_netdev_priv *np = netdev_priv(netdev);
 948         struct i40e_pf *pf = np->vsi->back;
 949         struct i40e_hw *hw = &pf->hw;
 950         u16 wol_nvm_bits;
 951
 952         /* NVM bit on means WoL disabled for the port */
 953         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
 954         if (((1 << hw->port) & wol_nvm_bits))
 955                 return -EOPNOTSUPP;
 956
 957         /* only magic packet is supported */
 958         if (wol->wolopts && (wol->wolopts != WAKE_MAGIC))
 959                 return -EOPNOTSUPP;
 960
 961         /* is this a new value? */
 962         if (pf->wol_en != !!wol->wolopts) {
 963                 pf->wol_en = !!wol->wolopts;
 964                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
 965         }
 966
 967         return 0;
 968 }
 969
 970 static int i40e_nway_reset(struct net_device *netdev)
 971 {
 972         /* restart autonegotiation */
 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         i40e_status ret = 0;
 977
 978         ret = i40e_aq_set_link_restart_an(hw, NULL);
 979         if (ret) {
 980                 netdev_info(netdev, "link restart failed, aq_err=%d\n",
 981                             pf->hw.aq.asq_last_status);
 982                 return -EIO;
 983         }
 984
 985         return 0;
 986 }
 987
 988 static int i40e_set_phys_id(struct net_device *netdev,
 989                             enum ethtool_phys_id_state state)
 990 {
 991         struct i40e_netdev_priv *np = netdev_priv(netdev);
 992         struct i40e_pf *pf = np->vsi->back;
 993         struct i40e_hw *hw = &pf->hw;
 994         int blink_freq = 2;
 995
 996         switch (state) {
 997         case ETHTOOL_ID_ACTIVE:
 998                 pf->led_status = i40e_led_get(hw);
 999                 return blink_freq;
1000         case ETHTOOL_ID_ON:
1001                 i40e_led_set(hw, 0xF, false);
1002                 break;
1003         case ETHTOOL_ID_OFF:
1004                 i40e_led_set(hw, 0x0, false);
1005                 break;
1006         case ETHTOOL_ID_INACTIVE:
1007                 i40e_led_set(hw, pf->led_status, false);
1008                 break;
1009         }
1010
1011         return 0;
1012 }
1013
1014 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
1015  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
1016  * 125us (8000 interrupts per second) == ITR(62)
1017  */
1018
1019 static int i40e_get_coalesce(struct net_device *netdev,
1020                              struct ethtool_coalesce *ec)
1021 {
1022         struct i40e_netdev_priv *np = netdev_priv(netdev);
1023         struct i40e_vsi *vsi = np->vsi;
1024
1025         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
1026         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
1027
1028         if (ITR_IS_DYNAMIC(vsi->rx_itr_setting))
1029                 ec->use_adaptive_rx_coalesce = 1;
1030
1031         if (ITR_IS_DYNAMIC(vsi->tx_itr_setting))
1032                 ec->use_adaptive_tx_coalesce = 1;
1033
1034         ec->rx_coalesce_usecs = vsi->rx_itr_setting & ~I40E_ITR_DYNAMIC;
1035         ec->tx_coalesce_usecs = vsi->tx_itr_setting & ~I40E_ITR_DYNAMIC;
1036
1037         return 0;
1038 }
1039
1040 static int i40e_set_coalesce(struct net_device *netdev,
1041                              struct ethtool_coalesce *ec)
1042 {
1043         struct i40e_netdev_priv *np = netdev_priv(netdev);
1044         struct i40e_q_vector *q_vector;
1045         struct i40e_vsi *vsi = np->vsi;
1046         struct i40e_pf *pf = vsi->back;
1047         struct i40e_hw *hw = &pf->hw;
1048         u16 vector;
1049         int i;
1050
1051         if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
1052                 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
1053
1054         if ((ec->rx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
1055             (ec->rx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
1056                 vsi->rx_itr_setting = ec->rx_coalesce_usecs;
1057         else
1058                 return -EINVAL;
1059
1060         if ((ec->tx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
1061             (ec->tx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
1062                 vsi->tx_itr_setting = ec->tx_coalesce_usecs;
1063         else
1064                 return -EINVAL;
1065
1066         if (ec->use_adaptive_rx_coalesce)
1067                 vsi->rx_itr_setting |= I40E_ITR_DYNAMIC;
1068         else
1069                 vsi->rx_itr_setting &= ~I40E_ITR_DYNAMIC;
1070
1071         if (ec->use_adaptive_tx_coalesce)
1072                 vsi->tx_itr_setting |= I40E_ITR_DYNAMIC;
1073         else
1074                 vsi->tx_itr_setting &= ~I40E_ITR_DYNAMIC;
1075
1076         vector = vsi->base_vector;
1077         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
1078                 q_vector = vsi->q_vectors[i];
1079                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
1080                 wr32(hw, I40E_PFINT_ITRN(0, vector - 1), q_vector->rx.itr);
1081                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
1082                 wr32(hw, I40E_PFINT_ITRN(1, vector - 1), q_vector->tx.itr);
1083                 i40e_flush(hw);
1084         }
1085
1086         return 0;
1087 }
1088
1089 /**
1090  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
1091  * @pf: pointer to the physical function struct
1092  * @cmd: ethtool rxnfc command
1093  *
1094  * Returns Success if the flow is supported, else Invalid Input.
1095  **/
1096 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
1097 {
1098         cmd->data = 0;
1099
1100         /* Report default options for RSS on i40e */
1101         switch (cmd->flow_type) {
1102         case TCP_V4_FLOW:
1103         case UDP_V4_FLOW:
1104                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1105         /* fall through to add IP fields */
1106         case SCTP_V4_FLOW:
1107         case AH_ESP_V4_FLOW:
1108         case AH_V4_FLOW:
1109         case ESP_V4_FLOW:
1110         case IPV4_FLOW:
1111                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1112                 break;
1113         case TCP_V6_FLOW:
1114         case UDP_V6_FLOW:
1115                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1116         /* fall through to add IP fields */
1117         case SCTP_V6_FLOW:
1118         case AH_ESP_V6_FLOW:
1119         case AH_V6_FLOW:
1120         case ESP_V6_FLOW:
1121         case IPV6_FLOW:
1122                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1123                 break;
1124         default:
1125                 return -EINVAL;
1126         }
1127
1128         return 0;
1129 }
1130
1131 /**
1132  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
1133  * @pf: Pointer to the physical function struct
1134  * @cmd: The command to get or set Rx flow classification rules
1135  * @rule_locs: Array of used rule locations
1136  *
1137  * This function populates both the total and actual rule count of
1138  * the ethtool flow classification command
1139  *
1140  * Returns 0 on success or -EMSGSIZE if entry not found
1141  **/
1142 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
1143                                      struct ethtool_rxnfc *cmd,
1144                                      u32 *rule_locs)
1145 {
1146         struct i40e_fdir_filter *rule;
1147         struct hlist_node *node2;
1148         int cnt = 0;
1149
1150         /* report total rule count */
1151         cmd->data = i40e_get_fd_cnt_all(pf);
1152
1153         hlist_for_each_entry_safe(rule, node2,
1154                                   &pf->fdir_filter_list, fdir_node) {
1155                 if (cnt == cmd->rule_cnt)
1156                         return -EMSGSIZE;
1157
1158                 rule_locs[cnt] = rule->fd_id;
1159                 cnt++;
1160         }
1161
1162         cmd->rule_cnt = cnt;
1163
1164         return 0;
1165 }
1166
1167 /**
1168  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
1169  * @pf: Pointer to the physical function struct
1170  * @cmd: The command to get or set Rx flow classification rules
1171  *
1172  * This function looks up a filter based on the Rx flow classification
1173  * command and fills the flow spec info for it if found
1174  *
1175  * Returns 0 on success or -EINVAL if filter not found
1176  **/
1177 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
1178                                        struct ethtool_rxnfc *cmd)
1179 {
1180         struct ethtool_rx_flow_spec *fsp =
1181                         (struct ethtool_rx_flow_spec *)&cmd->fs;
1182         struct i40e_fdir_filter *rule = NULL;
1183         struct hlist_node *node2;
1184
1185         hlist_for_each_entry_safe(rule, node2,
1186                                   &pf->fdir_filter_list, fdir_node) {
1187                 if (fsp->location <= rule->fd_id)
1188                         break;
1189         }
1190
1191         if (!rule || fsp->location != rule->fd_id)
1192                 return -EINVAL;
1193
1194         fsp->flow_type = rule->flow_type;
1195         if (fsp->flow_type == IP_USER_FLOW) {
1196                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
1197                 fsp->h_u.usr_ip4_spec.proto = 0;
1198                 fsp->m_u.usr_ip4_spec.proto = 0;
1199         }
1200
1201         fsp->h_u.tcp_ip4_spec.psrc = rule->src_port;
1202         fsp->h_u.tcp_ip4_spec.pdst = rule->dst_port;
1203         fsp->h_u.tcp_ip4_spec.ip4src = rule->src_ip[0];
1204         fsp->h_u.tcp_ip4_spec.ip4dst = rule->dst_ip[0];
1205         fsp->ring_cookie = rule->q_index;
1206
1207         return 0;
1208 }
1209
1210 /**
1211  * i40e_get_rxnfc - command to get RX flow classification rules
1212  * @netdev: network interface device structure
1213  * @cmd: ethtool rxnfc command
1214  *
1215  * Returns Success if the command is supported.
1216  **/
1217 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
1218                           u32 *rule_locs)
1219 {
1220         struct i40e_netdev_priv *np = netdev_priv(netdev);
1221         struct i40e_vsi *vsi = np->vsi;
1222         struct i40e_pf *pf = vsi->back;
1223         int ret = -EOPNOTSUPP;
1224
1225         switch (cmd->cmd) {
1226         case ETHTOOL_GRXRINGS:
1227                 cmd->data = vsi->alloc_queue_pairs;
1228                 ret = 0;
1229                 break;
1230         case ETHTOOL_GRXFH:
1231                 ret = i40e_get_rss_hash_opts(pf, cmd);
1232                 break;
1233         case ETHTOOL_GRXCLSRLCNT:
1234                 cmd->rule_cnt = pf->fdir_pf_active_filters;
1235                 /* report total rule count */
1236                 cmd->data = i40e_get_fd_cnt_all(pf);
1237                 ret = 0;
1238                 break;
1239         case ETHTOOL_GRXCLSRULE:
1240                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
1241                 break;
1242         case ETHTOOL_GRXCLSRLALL:
1243                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
1244                 break;
1245         default:
1246                 break;
1247         }
1248
1249         return ret;
1250 }
1251
1252 /**
1253  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
1254  * @pf: pointer to the physical function struct
1255  * @cmd: ethtool rxnfc command
1256  *
1257  * Returns Success if the flow input set is supported.
1258  **/
1259 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
1260 {
1261         struct i40e_hw *hw = &pf->hw;
1262         u64 hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
1263                    ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
1264
1265         /* RSS does not support anything other than hashing
1266          * to queues on src and dst IPs and ports
1267          */
1268         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
1269                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
1270                 return -EINVAL;
1271
1272         /* We need at least the IP SRC and DEST fields for hashing */
1273         if (!(nfc->data & RXH_IP_SRC) ||
1274             !(nfc->data & RXH_IP_DST))
1275                 return -EINVAL;
1276
1277         switch (nfc->flow_type) {
1278         case TCP_V4_FLOW:
1279                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1280                 case 0:
1281                         hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1282                         break;
1283                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1284                         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1285                         break;
1286                 default:
1287                         return -EINVAL;
1288                 }
1289                 break;
1290         case TCP_V6_FLOW:
1291                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1292                 case 0:
1293                         hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1294                         break;
1295                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1296                         hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1297                         break;
1298                 default:
1299                         return -EINVAL;
1300                 }
1301                 break;
1302         case UDP_V4_FLOW:
1303                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1304                 case 0:
1305                         hena &= ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) |
1306                                   ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1307                         break;
1308                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1309                         hena |= (((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) |
1310                                   ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1311                         break;
1312                 default:
1313                         return -EINVAL;
1314                 }
1315                 break;
1316         case UDP_V6_FLOW:
1317                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1318                 case 0:
1319                         hena &= ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) |
1320                                   ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1321                         break;
1322                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1323                         hena |= (((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) |
1324                                  ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1325                         break;
1326                 default:
1327                         return -EINVAL;
1328                 }
1329                 break;
1330         case AH_ESP_V4_FLOW:
1331         case AH_V4_FLOW:
1332         case ESP_V4_FLOW:
1333         case SCTP_V4_FLOW:
1334                 if ((nfc->data & RXH_L4_B_0_1) ||
1335                     (nfc->data & RXH_L4_B_2_3))
1336                         return -EINVAL;
1337                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
1338                 break;
1339         case AH_ESP_V6_FLOW:
1340         case AH_V6_FLOW:
1341         case ESP_V6_FLOW:
1342         case SCTP_V6_FLOW:
1343                 if ((nfc->data & RXH_L4_B_0_1) ||
1344                     (nfc->data & RXH_L4_B_2_3))
1345                         return -EINVAL;
1346                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
1347                 break;
1348         case IPV4_FLOW:
1349                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
1350                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4);
1351                 break;
1352         case IPV6_FLOW:
1353                 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
1354                         ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6);
1355                 break;
1356         default:
1357                 return -EINVAL;
1358         }
1359
1360         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
1361         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
1362         i40e_flush(hw);
1363
1364         return 0;
1365 }
1366
1367 /**
1368  * i40e_match_fdir_input_set - Match a new filter against an existing one
1369  * @rule: The filter already added
1370  * @input: The new filter to comapre against
1371  *
1372  * Returns true if the two input set match
1373  **/
1374 static bool i40e_match_fdir_input_set(struct i40e_fdir_filter *rule,
1375                                       struct i40e_fdir_filter *input)
1376 {
1377         if ((rule->dst_ip[0] != input->dst_ip[0]) ||
1378             (rule->src_ip[0] != input->src_ip[0]) ||
1379             (rule->dst_port != input->dst_port) ||
1380             (rule->src_port != input->src_port))
1381                 return false;
1382         return true;
1383 }
1384
1385 /**
1386  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
1387  * @vsi: Pointer to the targeted VSI
1388  * @input: The filter to update or NULL to indicate deletion
1389  * @sw_idx: Software index to the filter
1390  * @cmd: The command to get or set Rx flow classification rules
1391  *
1392  * This function updates (or deletes) a Flow Director entry from
1393  * the hlist of the corresponding PF
1394  *
1395  * Returns 0 on success
1396  **/
1397 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
1398                                           struct i40e_fdir_filter *input,
1399                                           u16 sw_idx,
1400                                           struct ethtool_rxnfc *cmd)
1401 {
1402         struct i40e_fdir_filter *rule, *parent;
1403         struct i40e_pf *pf = vsi->back;
1404         struct hlist_node *node2;
1405         int err = -EINVAL;
1406
1407         parent = NULL;
1408         rule = NULL;
1409
1410         hlist_for_each_entry_safe(rule, node2,
1411                                   &pf->fdir_filter_list, fdir_node) {
1412                 /* hash found, or no matching entry */
1413                 if (rule->fd_id >= sw_idx)
1414                         break;
1415                 parent = rule;
1416         }
1417
1418         /* if there is an old rule occupying our place remove it */
1419         if (rule && (rule->fd_id == sw_idx)) {
1420                 if (input && !i40e_match_fdir_input_set(rule, input))
1421                         err = i40e_add_del_fdir(vsi, rule, false);
1422                 else if (!input)
1423                         err = i40e_add_del_fdir(vsi, rule, false);
1424                 hlist_del(&rule->fdir_node);
1425                 kfree(rule);
1426                 pf->fdir_pf_active_filters--;
1427         }
1428
1429         /* If no input this was a delete, err should be 0 if a rule was
1430          * successfully found and removed from the list else -EINVAL
1431          */
1432         if (!input)
1433                 return err;
1434
1435         /* initialize node and set software index */
1436         INIT_HLIST_NODE(&input->fdir_node);
1437
1438         /* add filter to the list */
1439         if (parent)
1440                 hlist_add_after(&parent->fdir_node, &input->fdir_node);
1441         else
1442                 hlist_add_head(&input->fdir_node,
1443                                &pf->fdir_filter_list);
1444
1445         /* update counts */
1446         pf->fdir_pf_active_filters++;
1447
1448         return 0;
1449 }
1450
1451 /**
1452  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
1453  * @vsi: Pointer to the targeted VSI
1454  * @cmd: The command to get or set Rx flow classification rules
1455  *
1456  * The function removes a Flow Director filter entry from the
1457  * hlist of the corresponding PF
1458  *
1459  * Returns 0 on success
1460  */
1461 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
1462                                struct ethtool_rxnfc *cmd)
1463 {
1464         struct ethtool_rx_flow_spec *fsp =
1465                 (struct ethtool_rx_flow_spec *)&cmd->fs;
1466         struct i40e_pf *pf = vsi->back;
1467         int ret = 0;
1468
1469         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
1470
1471         i40e_fdir_check_and_reenable(pf);
1472         return ret;
1473 }
1474
1475 /**
1476  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
1477  * @vsi: pointer to the targeted VSI
1478  * @cmd: command to get or set RX flow classification rules
1479  *
1480  * Add Flow Director filters for a specific flow spec based on their
1481  * protocol.  Returns 0 if the filters were successfully added.
1482  **/
1483 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
1484                                  struct ethtool_rxnfc *cmd)
1485 {
1486         struct ethtool_rx_flow_spec *fsp;
1487         struct i40e_fdir_filter *input;
1488         struct i40e_pf *pf;
1489         int ret = -EINVAL;
1490
1491         if (!vsi)
1492                 return -EINVAL;
1493
1494         pf = vsi->back;
1495
1496         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
1497                 return -EOPNOTSUPP;
1498
1499         if (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)
1500                 return -ENOSPC;
1501
1502         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1503
1504         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
1505                               pf->hw.func_caps.fd_filters_guaranteed)) {
1506                 return -EINVAL;
1507         }
1508
1509         if (fsp->ring_cookie >= vsi->num_queue_pairs)
1510                 return -EINVAL;
1511
1512         input = kzalloc(sizeof(*input), GFP_KERNEL);
1513
1514         if (!input)
1515                 return -ENOMEM;
1516
1517         input->fd_id = fsp->location;
1518
1519         if (fsp->ring_cookie == RX_CLS_FLOW_DISC)
1520                 input->dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
1521         else
1522                 input->dest_ctl =
1523                              I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
1524
1525         input->q_index = fsp->ring_cookie;
1526         input->flex_off = 0;
1527         input->pctype = 0;
1528         input->dest_vsi = vsi->id;
1529         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
1530         input->cnt_index = 0;
1531         input->flow_type = fsp->flow_type;
1532         input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
1533         input->src_port = fsp->h_u.tcp_ip4_spec.psrc;
1534         input->dst_port = fsp->h_u.tcp_ip4_spec.pdst;
1535         input->src_ip[0] = fsp->h_u.tcp_ip4_spec.ip4src;
1536         input->dst_ip[0] = fsp->h_u.tcp_ip4_spec.ip4dst;
1537
1538         ret = i40e_add_del_fdir(vsi, input, true);
1539         if (ret)
1540                 kfree(input);
1541         else
1542                 i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
1543
1544         return ret;
1545 }
1546
1547 /**
1548  * i40e_set_rxnfc - command to set RX flow classification rules
1549  * @netdev: network interface device structure
1550  * @cmd: ethtool rxnfc command
1551  *
1552  * Returns Success if the command is supported.
1553  **/
1554 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
1555 {
1556         struct i40e_netdev_priv *np = netdev_priv(netdev);
1557         struct i40e_vsi *vsi = np->vsi;
1558         struct i40e_pf *pf = vsi->back;
1559         int ret = -EOPNOTSUPP;
1560
1561         switch (cmd->cmd) {
1562         case ETHTOOL_SRXFH:
1563                 ret = i40e_set_rss_hash_opt(pf, cmd);
1564                 break;
1565         case ETHTOOL_SRXCLSRLINS:
1566                 ret = i40e_add_fdir_ethtool(vsi, cmd);
1567                 break;
1568         case ETHTOOL_SRXCLSRLDEL:
1569                 ret = i40e_del_fdir_entry(vsi, cmd);
1570                 break;
1571         default:
1572                 break;
1573         }
1574
1575         return ret;
1576 }
1577
1578 /**
1579  * i40e_max_channels - get Max number of combined channels supported
1580  * @vsi: vsi pointer
1581  **/
1582 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
1583 {
1584         /* TODO: This code assumes DCB and FD is disabled for now. */
1585         return vsi->alloc_queue_pairs;
1586 }
1587
1588 /**
1589  * i40e_get_channels - Get the current channels enabled and max supported etc.
1590  * @netdev: network interface device structure
1591  * @ch: ethtool channels structure
1592  *
1593  * We don't support separate tx and rx queues as channels. The other count
1594  * represents how many queues are being used for control. max_combined counts
1595  * how many queue pairs we can support. They may not be mapped 1 to 1 with
1596  * q_vectors since we support a lot more queue pairs than q_vectors.
1597  **/
1598 static void i40e_get_channels(struct net_device *dev,
1599                                struct ethtool_channels *ch)
1600 {
1601         struct i40e_netdev_priv *np = netdev_priv(dev);
1602         struct i40e_vsi *vsi = np->vsi;
1603         struct i40e_pf *pf = vsi->back;
1604
1605         /* report maximum channels */
1606         ch->max_combined = i40e_max_channels(vsi);
1607
1608         /* report info for other vector */
1609         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
1610         ch->max_other = ch->other_count;
1611
1612         /* Note: This code assumes DCB is disabled for now. */
1613         ch->combined_count = vsi->num_queue_pairs;
1614 }
1615
1616 /**
1617  * i40e_set_channels - Set the new channels count.
1618  * @netdev: network interface device structure
1619  * @ch: ethtool channels structure
1620  *
1621  * The new channels count may not be the same as requested by the user
1622  * since it gets rounded down to a power of 2 value.
1623  **/
1624 static int i40e_set_channels(struct net_device *dev,
1625                               struct ethtool_channels *ch)
1626 {
1627         struct i40e_netdev_priv *np = netdev_priv(dev);
1628         unsigned int count = ch->combined_count;
1629         struct i40e_vsi *vsi = np->vsi;
1630         struct i40e_pf *pf = vsi->back;
1631         int new_count;
1632
1633         /* We do not support setting channels for any other VSI at present */
1634         if (vsi->type != I40E_VSI_MAIN)
1635                 return -EINVAL;
1636
1637         /* verify they are not requesting separate vectors */
1638         if (!count || ch->rx_count || ch->tx_count)
1639                 return -EINVAL;
1640
1641         /* verify other_count has not changed */
1642         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
1643                 return -EINVAL;
1644
1645         /* verify the number of channels does not exceed hardware limits */
1646         if (count > i40e_max_channels(vsi))
1647                 return -EINVAL;
1648
1649         /* update feature limits from largest to smallest supported values */
1650         /* TODO: Flow director limit, DCB etc */
1651
1652         /* cap RSS limit */
1653         if (count > pf->rss_size_max)
1654                 count = pf->rss_size_max;
1655
1656         /* use rss_reconfig to rebuild with new queue count and update traffic
1657          * class queue mapping
1658          */
1659         new_count = i40e_reconfig_rss_queues(pf, count);
1660         if (new_count > 0)
1661                 return 0;
1662         else
1663                 return -EINVAL;
1664 }
1665
1666 static const struct ethtool_ops i40e_ethtool_ops = {
1667         .get_settings           = i40e_get_settings,
1668         .get_drvinfo            = i40e_get_drvinfo,
1669         .get_regs_len           = i40e_get_regs_len,
1670         .get_regs               = i40e_get_regs,
1671         .nway_reset             = i40e_nway_reset,
1672         .get_link               = ethtool_op_get_link,
1673         .get_wol                = i40e_get_wol,
1674         .set_wol                = i40e_set_wol,
1675         .get_eeprom_len         = i40e_get_eeprom_len,
1676         .get_eeprom             = i40e_get_eeprom,
1677         .get_ringparam          = i40e_get_ringparam,
1678         .set_ringparam          = i40e_set_ringparam,
1679         .get_pauseparam         = i40e_get_pauseparam,
1680         .get_msglevel           = i40e_get_msglevel,
1681         .set_msglevel           = i40e_set_msglevel,
1682         .get_rxnfc              = i40e_get_rxnfc,
1683         .set_rxnfc              = i40e_set_rxnfc,
1684         .self_test              = i40e_diag_test,
1685         .get_strings            = i40e_get_strings,
1686         .set_phys_id            = i40e_set_phys_id,
1687         .get_sset_count         = i40e_get_sset_count,
1688         .get_ethtool_stats      = i40e_get_ethtool_stats,
1689         .get_coalesce           = i40e_get_coalesce,
1690         .set_coalesce           = i40e_set_coalesce,
1691         .get_channels           = i40e_get_channels,
1692         .set_channels           = i40e_set_channels,
1693         .get_ts_info            = i40e_get_ts_info,
1694 };
1695
1696 void i40e_set_ethtool_ops(struct net_device *netdev)
1697 {
1698         netdev->ethtool_ops = &i40e_ethtool_ops;
1699 }