drivers/net/vmxnet3/vmxnet3_ethtool.c

   1 /*
   2  * Linux driver for VMware's vmxnet3 ethernet NIC.
   3  *
   4  * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; version 2 of the License and no later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  13  * NON INFRINGEMENT.  See the GNU General Public License for more
  14  * details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * The full GNU General Public License is included in this distribution in
  21  * the file called "COPYING".
  22  *
  23  * Maintained by: Shreyas Bhatewara <pv-drivers@vmware.com>
  24  *
  25  */
  26
  27
  28 #include "vmxnet3_int.h"
  29
  30 struct vmxnet3_stat_desc {
  31         char desc[ETH_GSTRING_LEN];
  32         int  offset;
  33 };
  34
  35
  36 /* per tq stats maintained by the device */
  37 static const struct vmxnet3_stat_desc
  38 vmxnet3_tq_dev_stats[] = {
  39         /* description,         offset */
  40         { "Tx Queue#",        0 },
  41         { "  TSO pkts tx",      offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
  42         { "  TSO bytes tx",     offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
  43         { "  ucast pkts tx",    offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
  44         { "  ucast bytes tx",   offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
  45         { "  mcast pkts tx",    offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
  46         { "  mcast bytes tx",   offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
  47         { "  bcast pkts tx",    offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
  48         { "  bcast bytes tx",   offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
  49         { "  pkts tx err",      offsetof(struct UPT1_TxStats, pktsTxError) },
  50         { "  pkts tx discard",  offsetof(struct UPT1_TxStats, pktsTxDiscard) },
  51 };
  52
  53 /* per tq stats maintained by the driver */
  54 static const struct vmxnet3_stat_desc
  55 vmxnet3_tq_driver_stats[] = {
  56         /* description,         offset */
  57         {"  drv dropped tx total",      offsetof(struct vmxnet3_tq_driver_stats,
  58                                                  drop_total) },
  59         { "     too many frags", offsetof(struct vmxnet3_tq_driver_stats,
  60                                           drop_too_many_frags) },
  61         { "     giant hdr",     offsetof(struct vmxnet3_tq_driver_stats,
  62                                          drop_oversized_hdr) },
  63         { "     hdr err",       offsetof(struct vmxnet3_tq_driver_stats,
  64                                          drop_hdr_inspect_err) },
  65         { "     tso",           offsetof(struct vmxnet3_tq_driver_stats,
  66                                          drop_tso) },
  67         { "  ring full",        offsetof(struct vmxnet3_tq_driver_stats,
  68                                          tx_ring_full) },
  69         { "  pkts linearized",  offsetof(struct vmxnet3_tq_driver_stats,
  70                                          linearized) },
  71         { "  hdr cloned",       offsetof(struct vmxnet3_tq_driver_stats,
  72                                          copy_skb_header) },
  73         { "  giant hdr",        offsetof(struct vmxnet3_tq_driver_stats,
  74                                          oversized_hdr) },
  75 };
  76
  77 /* per rq stats maintained by the device */
  78 static const struct vmxnet3_stat_desc
  79 vmxnet3_rq_dev_stats[] = {
  80         { "Rx Queue#",        0 },
  81         { "  LRO pkts rx",      offsetof(struct UPT1_RxStats, LROPktsRxOK) },
  82         { "  LRO byte rx",      offsetof(struct UPT1_RxStats, LROBytesRxOK) },
  83         { "  ucast pkts rx",    offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
  84         { "  ucast bytes rx",   offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
  85         { "  mcast pkts rx",    offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
  86         { "  mcast bytes rx",   offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
  87         { "  bcast pkts rx",    offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
  88         { "  bcast bytes rx",   offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
  89         { "  pkts rx OOB",      offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
  90         { "  pkts rx err",      offsetof(struct UPT1_RxStats, pktsRxError) },
  91 };
  92
  93 /* per rq stats maintained by the driver */
  94 static const struct vmxnet3_stat_desc
  95 vmxnet3_rq_driver_stats[] = {
  96         /* description,         offset */
  97         { "  drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
  98                                              drop_total) },
  99         { "     err",           offsetof(struct vmxnet3_rq_driver_stats,
 100                                          drop_err) },
 101         { "     fcs",           offsetof(struct vmxnet3_rq_driver_stats,
 102                                          drop_fcs) },
 103         { "  rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
 104                                           rx_buf_alloc_failure) },
 105 };
 106
 107 /* gloabl stats maintained by the driver */
 108 static const struct vmxnet3_stat_desc
 109 vmxnet3_global_stats[] = {
 110         /* description,         offset */
 111         { "tx timeout count",   offsetof(struct vmxnet3_adapter,
 112                                          tx_timeout_count) }
 113 };
 114
 115
 116 struct rtnl_link_stats64 *
 117 vmxnet3_get_stats64(struct net_device *netdev,
 118                    struct rtnl_link_stats64 *stats)
 119 {
 120         struct vmxnet3_adapter *adapter;
 121         struct vmxnet3_tq_driver_stats *drvTxStats;
 122         struct vmxnet3_rq_driver_stats *drvRxStats;
 123         struct UPT1_TxStats *devTxStats;
 124         struct UPT1_RxStats *devRxStats;
 125         unsigned long flags;
 126         int i;
 127
 128         adapter = netdev_priv(netdev);
 129
 130         /* Collect the dev stats into the shared area */
 131         spin_lock_irqsave(&adapter->cmd_lock, flags);
 132         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 133         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 134
 135         for (i = 0; i < adapter->num_tx_queues; i++) {
 136                 devTxStats = &adapter->tqd_start[i].stats;
 137                 drvTxStats = &adapter->tx_queue[i].stats;
 138                 stats->tx_packets += devTxStats->ucastPktsTxOK +
 139                                      devTxStats->mcastPktsTxOK +
 140                                      devTxStats->bcastPktsTxOK;
 141                 stats->tx_bytes += devTxStats->ucastBytesTxOK +
 142                                    devTxStats->mcastBytesTxOK +
 143                                    devTxStats->bcastBytesTxOK;
 144                 stats->tx_errors += devTxStats->pktsTxError;
 145                 stats->tx_dropped += drvTxStats->drop_total;
 146         }
 147
 148         for (i = 0; i < adapter->num_rx_queues; i++) {
 149                 devRxStats = &adapter->rqd_start[i].stats;
 150                 drvRxStats = &adapter->rx_queue[i].stats;
 151                 stats->rx_packets += devRxStats->ucastPktsRxOK +
 152                                      devRxStats->mcastPktsRxOK +
 153                                      devRxStats->bcastPktsRxOK;
 154
 155                 stats->rx_bytes += devRxStats->ucastBytesRxOK +
 156                                    devRxStats->mcastBytesRxOK +
 157                                    devRxStats->bcastBytesRxOK;
 158
 159                 stats->rx_errors += devRxStats->pktsRxError;
 160                 stats->rx_dropped += drvRxStats->drop_total;
 161                 stats->multicast +=  devRxStats->mcastPktsRxOK;
 162         }
 163
 164         return stats;
 165 }
 166
 167 static int
 168 vmxnet3_get_sset_count(struct net_device *netdev, int sset)
 169 {
 170         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 171         switch (sset) {
 172         case ETH_SS_STATS:
 173                 return (ARRAY_SIZE(vmxnet3_tq_dev_stats) +
 174                         ARRAY_SIZE(vmxnet3_tq_driver_stats)) *
 175                        adapter->num_tx_queues +
 176                        (ARRAY_SIZE(vmxnet3_rq_dev_stats) +
 177                         ARRAY_SIZE(vmxnet3_rq_driver_stats)) *
 178                        adapter->num_rx_queues +
 179                         ARRAY_SIZE(vmxnet3_global_stats);
 180         default:
 181                 return -EOPNOTSUPP;
 182         }
 183 }
 184
 185
 186 /* Should be multiple of 4 */
 187 #define NUM_TX_REGS     8
 188 #define NUM_RX_REGS     12
 189
 190 static int
 191 vmxnet3_get_regs_len(struct net_device *netdev)
 192 {
 193         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 194         return (adapter->num_tx_queues * NUM_TX_REGS * sizeof(u32) +
 195                 adapter->num_rx_queues * NUM_RX_REGS * sizeof(u32));
 196 }
 197
 198
 199 static void
 200 vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
 201 {
 202         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 203
 204         strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
 205         drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0';
 206
 207         strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
 208                 sizeof(drvinfo->version));
 209         drvinfo->driver[sizeof(drvinfo->version) - 1] = '\0';
 210
 211         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 212         drvinfo->fw_version[sizeof(drvinfo->fw_version) - 1] = '\0';
 213
 214         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
 215                 ETHTOOL_BUSINFO_LEN);
 216         drvinfo->n_stats = vmxnet3_get_sset_count(netdev, ETH_SS_STATS);
 217         drvinfo->testinfo_len = 0;
 218         drvinfo->eedump_len   = 0;
 219         drvinfo->regdump_len  = vmxnet3_get_regs_len(netdev);
 220 }
 221
 222
 223 static void
 224 vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 225 {
 226          struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 227         if (stringset == ETH_SS_STATS) {
 228                 int i, j;
 229                 for (j = 0; j < adapter->num_tx_queues; j++) {
 230                         for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
 231                                 memcpy(buf, vmxnet3_tq_dev_stats[i].desc,
 232                                        ETH_GSTRING_LEN);
 233                                 buf += ETH_GSTRING_LEN;
 234                         }
 235                         for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats);
 236                              i++) {
 237                                 memcpy(buf, vmxnet3_tq_driver_stats[i].desc,
 238                                        ETH_GSTRING_LEN);
 239                                 buf += ETH_GSTRING_LEN;
 240                         }
 241                 }
 242
 243                 for (j = 0; j < adapter->num_rx_queues; j++) {
 244                         for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
 245                                 memcpy(buf, vmxnet3_rq_dev_stats[i].desc,
 246                                        ETH_GSTRING_LEN);
 247                                 buf += ETH_GSTRING_LEN;
 248                         }
 249                         for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats);
 250                              i++) {
 251                                 memcpy(buf, vmxnet3_rq_driver_stats[i].desc,
 252                                        ETH_GSTRING_LEN);
 253                                 buf += ETH_GSTRING_LEN;
 254                         }
 255                 }
 256
 257                 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
 258                         memcpy(buf, vmxnet3_global_stats[i].desc,
 259                                 ETH_GSTRING_LEN);
 260                         buf += ETH_GSTRING_LEN;
 261                 }
 262         }
 263 }
 264
 265 int vmxnet3_set_features(struct net_device *netdev, u32 features)
 266 {
 267         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 268         unsigned long flags;
 269         u32 changed = features ^ netdev->features;
 270
 271         if (changed & (NETIF_F_RXCSUM | NETIF_F_LRO | NETIF_F_HW_VLAN_RX)) {
 272                 if (features & NETIF_F_RXCSUM)
 273                         adapter->shared->devRead.misc.uptFeatures |=
 274                         UPT1_F_RXCSUM;
 275                 else
 276                         adapter->shared->devRead.misc.uptFeatures &=
 277                         ~UPT1_F_RXCSUM;
 278
 279                 /* update harware LRO capability accordingly */
 280                 if (features & NETIF_F_LRO)
 281                         adapter->shared->devRead.misc.uptFeatures |=
 282                                                         UPT1_F_LRO;
 283                 else
 284                         adapter->shared->devRead.misc.uptFeatures &=
 285                                                         ~UPT1_F_LRO;
 286
 287                 if (features & NETIF_F_HW_VLAN_RX)
 288                         adapter->shared->devRead.misc.uptFeatures |=
 289                         UPT1_F_RXVLAN;
 290                 else
 291                         adapter->shared->devRead.misc.uptFeatures &=
 292                         ~UPT1_F_RXVLAN;
 293
 294                 spin_lock_irqsave(&adapter->cmd_lock, flags);
 295                 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 296                                        VMXNET3_CMD_UPDATE_FEATURE);
 297                 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 298         }
 299         return 0;
 300 }
 301
 302 static void
 303 vmxnet3_get_ethtool_stats(struct net_device *netdev,
 304                           struct ethtool_stats *stats, u64  *buf)
 305 {
 306         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 307         unsigned long flags;
 308         u8 *base;
 309         int i;
 310         int j = 0;
 311
 312         spin_lock_irqsave(&adapter->cmd_lock, flags);
 313         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 314         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 315
 316         /* this does assume each counter is 64-bit wide */
 317         for (j = 0; j < adapter->num_tx_queues; j++) {
 318                 base = (u8 *)&adapter->tqd_start[j].stats;
 319                 *buf++ = (u64)j;
 320                 for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
 321                         *buf++ = *(u64 *)(base +
 322                                           vmxnet3_tq_dev_stats[i].offset);
 323
 324                 base = (u8 *)&adapter->tx_queue[j].stats;
 325                 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
 326                         *buf++ = *(u64 *)(base +
 327                                           vmxnet3_tq_driver_stats[i].offset);
 328         }
 329
 330         for (j = 0; j < adapter->num_tx_queues; j++) {
 331                 base = (u8 *)&adapter->rqd_start[j].stats;
 332                 *buf++ = (u64) j;
 333                 for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
 334                         *buf++ = *(u64 *)(base +
 335                                           vmxnet3_rq_dev_stats[i].offset);
 336
 337                 base = (u8 *)&adapter->rx_queue[j].stats;
 338                 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
 339                         *buf++ = *(u64 *)(base +
 340                                           vmxnet3_rq_driver_stats[i].offset);
 341         }
 342
 343         base = (u8 *)adapter;
 344         for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
 345                 *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
 346 }
 347
 348
 349 static void
 350 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
 351 {
 352         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 353         u32 *buf = p;
 354         int i = 0, j = 0;
 355
 356         memset(p, 0, vmxnet3_get_regs_len(netdev));
 357
 358         regs->version = 1;
 359
 360         /* Update vmxnet3_get_regs_len if we want to dump more registers */
 361
 362         /* make each ring use multiple of 16 bytes */
 363         for (i = 0; i < adapter->num_tx_queues; i++) {
 364                 buf[j++] = adapter->tx_queue[i].tx_ring.next2fill;
 365                 buf[j++] = adapter->tx_queue[i].tx_ring.next2comp;
 366                 buf[j++] = adapter->tx_queue[i].tx_ring.gen;
 367                 buf[j++] = 0;
 368
 369                 buf[j++] = adapter->tx_queue[i].comp_ring.next2proc;
 370                 buf[j++] = adapter->tx_queue[i].comp_ring.gen;
 371                 buf[j++] = adapter->tx_queue[i].stopped;
 372                 buf[j++] = 0;
 373         }
 374
 375         for (i = 0; i < adapter->num_rx_queues; i++) {
 376                 buf[j++] = adapter->rx_queue[i].rx_ring[0].next2fill;
 377                 buf[j++] = adapter->rx_queue[i].rx_ring[0].next2comp;
 378                 buf[j++] = adapter->rx_queue[i].rx_ring[0].gen;
 379                 buf[j++] = 0;
 380
 381                 buf[j++] = adapter->rx_queue[i].rx_ring[1].next2fill;
 382                 buf[j++] = adapter->rx_queue[i].rx_ring[1].next2comp;
 383                 buf[j++] = adapter->rx_queue[i].rx_ring[1].gen;
 384                 buf[j++] = 0;
 385
 386                 buf[j++] = adapter->rx_queue[i].comp_ring.next2proc;
 387                 buf[j++] = adapter->rx_queue[i].comp_ring.gen;
 388                 buf[j++] = 0;
 389                 buf[j++] = 0;
 390         }
 391
 392 }
 393
 394
 395 static void
 396 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 397 {
 398         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 399
 400         wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
 401         wol->wolopts = adapter->wol;
 402 }
 403
 404
 405 static int
 406 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 407 {
 408         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 409
 410         if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
 411                             WAKE_MAGICSECURE)) {
 412                 return -EOPNOTSUPP;
 413         }
 414
 415         adapter->wol = wol->wolopts;
 416
 417         device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 418
 419         return 0;
 420 }
 421
 422
 423 static int
 424 vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 425 {
 426         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 427
 428         ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
 429                           SUPPORTED_TP;
 430         ecmd->advertising = ADVERTISED_TP;
 431         ecmd->port = PORT_TP;
 432         ecmd->transceiver = XCVR_INTERNAL;
 433
 434         if (adapter->link_speed) {
 435                 ethtool_cmd_speed_set(ecmd, adapter->link_speed);
 436                 ecmd->duplex = DUPLEX_FULL;
 437         } else {
 438                 ethtool_cmd_speed_set(ecmd, -1);
 439                 ecmd->duplex = -1;
 440         }
 441         return 0;
 442 }
 443
 444
 445 static void
 446 vmxnet3_get_ringparam(struct net_device *netdev,
 447                       struct ethtool_ringparam *param)
 448 {
 449         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 450
 451         param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
 452         param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
 453         param->rx_mini_max_pending = 0;
 454         param->rx_jumbo_max_pending = 0;
 455
 456         param->rx_pending = adapter->rx_queue[0].rx_ring[0].size *
 457                             adapter->num_rx_queues;
 458         param->tx_pending = adapter->tx_queue[0].tx_ring.size *
 459                             adapter->num_tx_queues;
 460         param->rx_mini_pending = 0;
 461         param->rx_jumbo_pending = 0;
 462 }
 463
 464
 465 static int
 466 vmxnet3_set_ringparam(struct net_device *netdev,
 467                       struct ethtool_ringparam *param)
 468 {
 469         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 470         u32 new_tx_ring_size, new_rx_ring_size;
 471         u32 sz;
 472         int err = 0;
 473
 474         if (param->tx_pending == 0 || param->tx_pending >
 475                                                 VMXNET3_TX_RING_MAX_SIZE)
 476                 return -EINVAL;
 477
 478         if (param->rx_pending == 0 || param->rx_pending >
 479                                                 VMXNET3_RX_RING_MAX_SIZE)
 480                 return -EINVAL;
 481
 482
 483         /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
 484         new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
 485                                                         ~VMXNET3_RING_SIZE_MASK;
 486         new_tx_ring_size = min_t(u32, new_tx_ring_size,
 487                                  VMXNET3_TX_RING_MAX_SIZE);
 488         if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
 489                                                 VMXNET3_RING_SIZE_ALIGN) != 0)
 490                 return -EINVAL;
 491
 492         /* ring0 has to be a multiple of
 493          * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
 494          */
 495         sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
 496         new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
 497         new_rx_ring_size = min_t(u32, new_rx_ring_size,
 498                                  VMXNET3_RX_RING_MAX_SIZE / sz * sz);
 499         if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
 500                                                            sz) != 0)
 501                 return -EINVAL;
 502
 503         if (new_tx_ring_size == adapter->tx_queue[0].tx_ring.size &&
 504             new_rx_ring_size == adapter->rx_queue[0].rx_ring[0].size) {
 505                 return 0;
 506         }
 507
 508         /*
 509          * Reset_work may be in the middle of resetting the device, wait for its
 510          * completion.
 511          */
 512         while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
 513                 msleep(1);
 514
 515         if (netif_running(netdev)) {
 516                 vmxnet3_quiesce_dev(adapter);
 517                 vmxnet3_reset_dev(adapter);
 518
 519                 /* recreate the rx queue and the tx queue based on the
 520                  * new sizes */
 521                 vmxnet3_tq_destroy_all(adapter);
 522                 vmxnet3_rq_destroy_all(adapter);
 523
 524                 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
 525                         new_rx_ring_size, VMXNET3_DEF_RX_RING_SIZE);
 526
 527                 if (err) {
 528                         /* failed, most likely because of OOM, try default
 529                          * size */
 530                         printk(KERN_ERR "%s: failed to apply new sizes, try the"
 531                                 " default ones\n", netdev->name);
 532                         err = vmxnet3_create_queues(adapter,
 533                                                     VMXNET3_DEF_TX_RING_SIZE,
 534                                                     VMXNET3_DEF_RX_RING_SIZE,
 535                                                     VMXNET3_DEF_RX_RING_SIZE);
 536                         if (err) {
 537                                 printk(KERN_ERR "%s: failed to create queues "
 538                                         "with default sizes. Closing it\n",
 539                                         netdev->name);
 540                                 goto out;
 541                         }
 542                 }
 543
 544                 err = vmxnet3_activate_dev(adapter);
 545                 if (err)
 546                         printk(KERN_ERR "%s: failed to re-activate, error %d."
 547                                 " Closing it\n", netdev->name, err);
 548         }
 549
 550 out:
 551         clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
 552         if (err)
 553                 vmxnet3_force_close(adapter);
 554
 555         return err;
 556 }
 557
 558
 559 static int
 560 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
 561                   void *rules)
 562 {
 563         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 564         switch (info->cmd) {
 565         case ETHTOOL_GRXRINGS:
 566                 info->data = adapter->num_rx_queues;
 567                 return 0;
 568         }
 569         return -EOPNOTSUPP;
 570 }
 571
 572 #ifdef VMXNET3_RSS
 573 static int
 574 vmxnet3_get_rss_indir(struct net_device *netdev,
 575                       struct ethtool_rxfh_indir *p)
 576 {
 577         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 578         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 579         unsigned int n = min_t(unsigned int, p->size, rssConf->indTableSize);
 580
 581         p->size = rssConf->indTableSize;
 582         while (n--)
 583                 p->ring_index[n] = rssConf->indTable[n];
 584         return 0;
 585
 586 }
 587
 588 static int
 589 vmxnet3_set_rss_indir(struct net_device *netdev,
 590                       const struct ethtool_rxfh_indir *p)
 591 {
 592         unsigned int i;
 593         unsigned long flags;
 594         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 595         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 596
 597         if (p->size != rssConf->indTableSize)
 598                 return -EINVAL;
 599         for (i = 0; i < rssConf->indTableSize; i++) {
 600                 /*
 601                  * Return with error code if any of the queue indices
 602                  * is out of range
 603                  */
 604                 if (p->ring_index[i] < 0 ||
 605                     p->ring_index[i] >= adapter->num_rx_queues)
 606                         return -EINVAL;
 607         }
 608
 609         for (i = 0; i < rssConf->indTableSize; i++)
 610                 rssConf->indTable[i] = p->ring_index[i];
 611
 612         spin_lock_irqsave(&adapter->cmd_lock, flags);
 613         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 614                                VMXNET3_CMD_UPDATE_RSSIDT);
 615         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 616
 617         return 0;
 618
 619 }
 620 #endif
 621
 622 static struct ethtool_ops vmxnet3_ethtool_ops = {
 623         .get_settings      = vmxnet3_get_settings,
 624         .get_drvinfo       = vmxnet3_get_drvinfo,
 625         .get_regs_len      = vmxnet3_get_regs_len,
 626         .get_regs          = vmxnet3_get_regs,
 627         .get_wol           = vmxnet3_get_wol,
 628         .set_wol           = vmxnet3_set_wol,
 629         .get_link          = ethtool_op_get_link,
 630         .get_strings       = vmxnet3_get_strings,
 631         .get_sset_count    = vmxnet3_get_sset_count,
 632         .get_ethtool_stats = vmxnet3_get_ethtool_stats,
 633         .get_ringparam     = vmxnet3_get_ringparam,
 634         .set_ringparam     = vmxnet3_set_ringparam,
 635         .get_rxnfc         = vmxnet3_get_rxnfc,
 636 #ifdef VMXNET3_RSS
 637         .get_rxfh_indir    = vmxnet3_get_rss_indir,
 638         .set_rxfh_indir    = vmxnet3_set_rss_indir,
 639 #endif
 640 };
 641
 642 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
 643 {
 644         SET_ETHTOOL_OPS(netdev, &vmxnet3_ethtool_ops);
 645 }