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 static u32
  37 vmxnet3_get_rx_csum(struct net_device *netdev)
  38 {
  39         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
  40         return adapter->rxcsum;
  41 }
  42
  43
  44 static int
  45 vmxnet3_set_rx_csum(struct net_device *netdev, u32 val)
  46 {
  47         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
  48         unsigned long flags;
  49
  50         if (adapter->rxcsum != val) {
  51                 adapter->rxcsum = val;
  52                 if (netif_running(netdev)) {
  53                         if (val)
  54                                 adapter->shared->devRead.misc.uptFeatures |=
  55                                 UPT1_F_RXCSUM;
  56                         else
  57                                 adapter->shared->devRead.misc.uptFeatures &=
  58                                 ~UPT1_F_RXCSUM;
  59
  60                         spin_lock_irqsave(&adapter->cmd_lock, flags);
  61                         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
  62                                                VMXNET3_CMD_UPDATE_FEATURE);
  63                         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
  64                 }
  65         }
  66         return 0;
  67 }
  68
  69
  70 /* per tq stats maintained by the device */
  71 static const struct vmxnet3_stat_desc
  72 vmxnet3_tq_dev_stats[] = {
  73         /* description,         offset */
  74         { "Tx Queue#",        0 },
  75         { "  TSO pkts tx",      offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
  76         { "  TSO bytes tx",     offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
  77         { "  ucast pkts tx",    offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
  78         { "  ucast bytes tx",   offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
  79         { "  mcast pkts tx",    offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
  80         { "  mcast bytes tx",   offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
  81         { "  bcast pkts tx",    offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
  82         { "  bcast bytes tx",   offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
  83         { "  pkts tx err",      offsetof(struct UPT1_TxStats, pktsTxError) },
  84         { "  pkts tx discard",  offsetof(struct UPT1_TxStats, pktsTxDiscard) },
  85 };
  86
  87 /* per tq stats maintained by the driver */
  88 static const struct vmxnet3_stat_desc
  89 vmxnet3_tq_driver_stats[] = {
  90         /* description,         offset */
  91         {"  drv dropped tx total",      offsetof(struct vmxnet3_tq_driver_stats,
  92                                                  drop_total) },
  93         { "     too many frags", offsetof(struct vmxnet3_tq_driver_stats,
  94                                           drop_too_many_frags) },
  95         { "     giant hdr",     offsetof(struct vmxnet3_tq_driver_stats,
  96                                          drop_oversized_hdr) },
  97         { "     hdr err",       offsetof(struct vmxnet3_tq_driver_stats,
  98                                          drop_hdr_inspect_err) },
  99         { "     tso",           offsetof(struct vmxnet3_tq_driver_stats,
 100                                          drop_tso) },
 101         { "  ring full",        offsetof(struct vmxnet3_tq_driver_stats,
 102                                          tx_ring_full) },
 103         { "  pkts linearized",  offsetof(struct vmxnet3_tq_driver_stats,
 104                                          linearized) },
 105         { "  hdr cloned",       offsetof(struct vmxnet3_tq_driver_stats,
 106                                          copy_skb_header) },
 107         { "  giant hdr",        offsetof(struct vmxnet3_tq_driver_stats,
 108                                          oversized_hdr) },
 109 };
 110
 111 /* per rq stats maintained by the device */
 112 static const struct vmxnet3_stat_desc
 113 vmxnet3_rq_dev_stats[] = {
 114         { "Rx Queue#",        0 },
 115         { "  LRO pkts rx",      offsetof(struct UPT1_RxStats, LROPktsRxOK) },
 116         { "  LRO byte rx",      offsetof(struct UPT1_RxStats, LROBytesRxOK) },
 117         { "  ucast pkts rx",    offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
 118         { "  ucast bytes rx",   offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
 119         { "  mcast pkts rx",    offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
 120         { "  mcast bytes rx",   offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
 121         { "  bcast pkts rx",    offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
 122         { "  bcast bytes rx",   offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
 123         { "  pkts rx OOB",      offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
 124         { "  pkts rx err",      offsetof(struct UPT1_RxStats, pktsRxError) },
 125 };
 126
 127 /* per rq stats maintained by the driver */
 128 static const struct vmxnet3_stat_desc
 129 vmxnet3_rq_driver_stats[] = {
 130         /* description,         offset */
 131         { "  drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
 132                                              drop_total) },
 133         { "     err",           offsetof(struct vmxnet3_rq_driver_stats,
 134                                          drop_err) },
 135         { "     fcs",           offsetof(struct vmxnet3_rq_driver_stats,
 136                                          drop_fcs) },
 137         { "  rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
 138                                           rx_buf_alloc_failure) },
 139 };
 140
 141 /* gloabl stats maintained by the driver */
 142 static const struct vmxnet3_stat_desc
 143 vmxnet3_global_stats[] = {
 144         /* description,         offset */
 145         { "tx timeout count",   offsetof(struct vmxnet3_adapter,
 146                                          tx_timeout_count) }
 147 };
 148
 149
 150 struct net_device_stats *
 151 vmxnet3_get_stats(struct net_device *netdev)
 152 {
 153         struct vmxnet3_adapter *adapter;
 154         struct vmxnet3_tq_driver_stats *drvTxStats;
 155         struct vmxnet3_rq_driver_stats *drvRxStats;
 156         struct UPT1_TxStats *devTxStats;
 157         struct UPT1_RxStats *devRxStats;
 158         struct net_device_stats *net_stats = &netdev->stats;
 159         unsigned long flags;
 160         int i;
 161
 162         adapter = netdev_priv(netdev);
 163
 164         /* Collect the dev stats into the shared area */
 165         spin_lock_irqsave(&adapter->cmd_lock, flags);
 166         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 167         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 168
 169         memset(net_stats, 0, sizeof(*net_stats));
 170         for (i = 0; i < adapter->num_tx_queues; i++) {
 171                 devTxStats = &adapter->tqd_start[i].stats;
 172                 drvTxStats = &adapter->tx_queue[i].stats;
 173                 net_stats->tx_packets += devTxStats->ucastPktsTxOK +
 174                                         devTxStats->mcastPktsTxOK +
 175                                         devTxStats->bcastPktsTxOK;
 176                 net_stats->tx_bytes += devTxStats->ucastBytesTxOK +
 177                                       devTxStats->mcastBytesTxOK +
 178                                       devTxStats->bcastBytesTxOK;
 179                 net_stats->tx_errors += devTxStats->pktsTxError;
 180                 net_stats->tx_dropped += drvTxStats->drop_total;
 181         }
 182
 183         for (i = 0; i < adapter->num_rx_queues; i++) {
 184                 devRxStats = &adapter->rqd_start[i].stats;
 185                 drvRxStats = &adapter->rx_queue[i].stats;
 186                 net_stats->rx_packets += devRxStats->ucastPktsRxOK +
 187                                         devRxStats->mcastPktsRxOK +
 188                                         devRxStats->bcastPktsRxOK;
 189
 190                 net_stats->rx_bytes += devRxStats->ucastBytesRxOK +
 191                                       devRxStats->mcastBytesRxOK +
 192                                       devRxStats->bcastBytesRxOK;
 193
 194                 net_stats->rx_errors += devRxStats->pktsRxError;
 195                 net_stats->rx_dropped += drvRxStats->drop_total;
 196                 net_stats->multicast +=  devRxStats->mcastPktsRxOK;
 197         }
 198         return net_stats;
 199 }
 200
 201 static int
 202 vmxnet3_get_sset_count(struct net_device *netdev, int sset)
 203 {
 204         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 205         switch (sset) {
 206         case ETH_SS_STATS:
 207                 return (ARRAY_SIZE(vmxnet3_tq_dev_stats) +
 208                         ARRAY_SIZE(vmxnet3_tq_driver_stats)) *
 209                        adapter->num_tx_queues +
 210                        (ARRAY_SIZE(vmxnet3_rq_dev_stats) +
 211                         ARRAY_SIZE(vmxnet3_rq_driver_stats)) *
 212                        adapter->num_rx_queues +
 213                         ARRAY_SIZE(vmxnet3_global_stats);
 214         default:
 215                 return -EOPNOTSUPP;
 216         }
 217 }
 218
 219
 220 /* Should be multiple of 4 */
 221 #define NUM_TX_REGS     8
 222 #define NUM_RX_REGS     12
 223
 224 static int
 225 vmxnet3_get_regs_len(struct net_device *netdev)
 226 {
 227         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 228         return (adapter->num_tx_queues * NUM_TX_REGS * sizeof(u32) +
 229                 adapter->num_rx_queues * NUM_RX_REGS * sizeof(u32));
 230 }
 231
 232
 233 static void
 234 vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
 235 {
 236         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 237
 238         strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
 239         drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0';
 240
 241         strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
 242                 sizeof(drvinfo->version));
 243         drvinfo->driver[sizeof(drvinfo->version) - 1] = '\0';
 244
 245         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 246         drvinfo->fw_version[sizeof(drvinfo->fw_version) - 1] = '\0';
 247
 248         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
 249                 ETHTOOL_BUSINFO_LEN);
 250         drvinfo->n_stats = vmxnet3_get_sset_count(netdev, ETH_SS_STATS);
 251         drvinfo->testinfo_len = 0;
 252         drvinfo->eedump_len   = 0;
 253         drvinfo->regdump_len  = vmxnet3_get_regs_len(netdev);
 254 }
 255
 256
 257 static void
 258 vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 259 {
 260          struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 261         if (stringset == ETH_SS_STATS) {
 262                 int i, j;
 263                 for (j = 0; j < adapter->num_tx_queues; j++) {
 264                         for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
 265                                 memcpy(buf, vmxnet3_tq_dev_stats[i].desc,
 266                                        ETH_GSTRING_LEN);
 267                                 buf += ETH_GSTRING_LEN;
 268                         }
 269                         for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats);
 270                              i++) {
 271                                 memcpy(buf, vmxnet3_tq_driver_stats[i].desc,
 272                                        ETH_GSTRING_LEN);
 273                                 buf += ETH_GSTRING_LEN;
 274                         }
 275                 }
 276
 277                 for (j = 0; j < adapter->num_rx_queues; j++) {
 278                         for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
 279                                 memcpy(buf, vmxnet3_rq_dev_stats[i].desc,
 280                                        ETH_GSTRING_LEN);
 281                                 buf += ETH_GSTRING_LEN;
 282                         }
 283                         for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats);
 284                              i++) {
 285                                 memcpy(buf, vmxnet3_rq_driver_stats[i].desc,
 286                                        ETH_GSTRING_LEN);
 287                                 buf += ETH_GSTRING_LEN;
 288                         }
 289                 }
 290
 291                 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
 292                         memcpy(buf, vmxnet3_global_stats[i].desc,
 293                                 ETH_GSTRING_LEN);
 294                         buf += ETH_GSTRING_LEN;
 295                 }
 296         }
 297 }
 298
 299 static int
 300 vmxnet3_set_flags(struct net_device *netdev, u32 data)
 301 {
 302         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 303         u8 lro_requested = (data & ETH_FLAG_LRO) == 0 ? 0 : 1;
 304         u8 lro_present = (netdev->features & NETIF_F_LRO) == 0 ? 0 : 1;
 305         unsigned long flags;
 306
 307         if (data & ~ETH_FLAG_LRO)
 308                 return -EOPNOTSUPP;
 309
 310         if (lro_requested ^ lro_present) {
 311                 /* toggle the LRO feature*/
 312                 netdev->features ^= NETIF_F_LRO;
 313
 314                 /* update harware LRO capability accordingly */
 315                 if (lro_requested)
 316                         adapter->shared->devRead.misc.uptFeatures |=
 317                                                         UPT1_F_LRO;
 318                 else
 319                         adapter->shared->devRead.misc.uptFeatures &=
 320                                                         ~UPT1_F_LRO;
 321                 spin_lock_irqsave(&adapter->cmd_lock, flags);
 322                 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 323                                        VMXNET3_CMD_UPDATE_FEATURE);
 324                 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 325         }
 326         return 0;
 327 }
 328
 329 static void
 330 vmxnet3_get_ethtool_stats(struct net_device *netdev,
 331                           struct ethtool_stats *stats, u64  *buf)
 332 {
 333         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 334         unsigned long flags;
 335         u8 *base;
 336         int i;
 337         int j = 0;
 338
 339         spin_lock_irqsave(&adapter->cmd_lock, flags);
 340         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 341         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 342
 343         /* this does assume each counter is 64-bit wide */
 344         for (j = 0; j < adapter->num_tx_queues; j++) {
 345                 base = (u8 *)&adapter->tqd_start[j].stats;
 346                 *buf++ = (u64)j;
 347                 for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
 348                         *buf++ = *(u64 *)(base +
 349                                           vmxnet3_tq_dev_stats[i].offset);
 350
 351                 base = (u8 *)&adapter->tx_queue[j].stats;
 352                 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
 353                         *buf++ = *(u64 *)(base +
 354                                           vmxnet3_tq_driver_stats[i].offset);
 355         }
 356
 357         for (j = 0; j < adapter->num_tx_queues; j++) {
 358                 base = (u8 *)&adapter->rqd_start[j].stats;
 359                 *buf++ = (u64) j;
 360                 for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
 361                         *buf++ = *(u64 *)(base +
 362                                           vmxnet3_rq_dev_stats[i].offset);
 363
 364                 base = (u8 *)&adapter->rx_queue[j].stats;
 365                 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
 366                         *buf++ = *(u64 *)(base +
 367                                           vmxnet3_rq_driver_stats[i].offset);
 368         }
 369
 370         base = (u8 *)adapter;
 371         for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
 372                 *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
 373 }
 374
 375
 376 static void
 377 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
 378 {
 379         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 380         u32 *buf = p;
 381         int i = 0, j = 0;
 382
 383         memset(p, 0, vmxnet3_get_regs_len(netdev));
 384
 385         regs->version = 1;
 386
 387         /* Update vmxnet3_get_regs_len if we want to dump more registers */
 388
 389         /* make each ring use multiple of 16 bytes */
 390         for (i = 0; i < adapter->num_tx_queues; i++) {
 391                 buf[j++] = adapter->tx_queue[i].tx_ring.next2fill;
 392                 buf[j++] = adapter->tx_queue[i].tx_ring.next2comp;
 393                 buf[j++] = adapter->tx_queue[i].tx_ring.gen;
 394                 buf[j++] = 0;
 395
 396                 buf[j++] = adapter->tx_queue[i].comp_ring.next2proc;
 397                 buf[j++] = adapter->tx_queue[i].comp_ring.gen;
 398                 buf[j++] = adapter->tx_queue[i].stopped;
 399                 buf[j++] = 0;
 400         }
 401
 402         for (i = 0; i < adapter->num_rx_queues; i++) {
 403                 buf[j++] = adapter->rx_queue[i].rx_ring[0].next2fill;
 404                 buf[j++] = adapter->rx_queue[i].rx_ring[0].next2comp;
 405                 buf[j++] = adapter->rx_queue[i].rx_ring[0].gen;
 406                 buf[j++] = 0;
 407
 408                 buf[j++] = adapter->rx_queue[i].rx_ring[1].next2fill;
 409                 buf[j++] = adapter->rx_queue[i].rx_ring[1].next2comp;
 410                 buf[j++] = adapter->rx_queue[i].rx_ring[1].gen;
 411                 buf[j++] = 0;
 412
 413                 buf[j++] = adapter->rx_queue[i].comp_ring.next2proc;
 414                 buf[j++] = adapter->rx_queue[i].comp_ring.gen;
 415                 buf[j++] = 0;
 416                 buf[j++] = 0;
 417         }
 418
 419 }
 420
 421
 422 static void
 423 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 424 {
 425         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 426
 427         wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
 428         wol->wolopts = adapter->wol;
 429 }
 430
 431
 432 static int
 433 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 434 {
 435         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 436
 437         if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
 438                             WAKE_MAGICSECURE)) {
 439                 return -EOPNOTSUPP;
 440         }
 441
 442         adapter->wol = wol->wolopts;
 443
 444         device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 445
 446         return 0;
 447 }
 448
 449
 450 static int
 451 vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 452 {
 453         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 454
 455         ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
 456                           SUPPORTED_TP;
 457         ecmd->advertising = ADVERTISED_TP;
 458         ecmd->port = PORT_TP;
 459         ecmd->transceiver = XCVR_INTERNAL;
 460
 461         if (adapter->link_speed) {
 462                 ecmd->speed = adapter->link_speed;
 463                 ecmd->duplex = DUPLEX_FULL;
 464         } else {
 465                 ecmd->speed = -1;
 466                 ecmd->duplex = -1;
 467         }
 468         return 0;
 469 }
 470
 471
 472 static void
 473 vmxnet3_get_ringparam(struct net_device *netdev,
 474                       struct ethtool_ringparam *param)
 475 {
 476         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 477
 478         param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
 479         param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
 480         param->rx_mini_max_pending = 0;
 481         param->rx_jumbo_max_pending = 0;
 482
 483         param->rx_pending = adapter->rx_queue[0].rx_ring[0].size *
 484                             adapter->num_rx_queues;
 485         param->tx_pending = adapter->tx_queue[0].tx_ring.size *
 486                             adapter->num_tx_queues;
 487         param->rx_mini_pending = 0;
 488         param->rx_jumbo_pending = 0;
 489 }
 490
 491
 492 static int
 493 vmxnet3_set_ringparam(struct net_device *netdev,
 494                       struct ethtool_ringparam *param)
 495 {
 496         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 497         u32 new_tx_ring_size, new_rx_ring_size;
 498         u32 sz;
 499         int err = 0;
 500
 501         if (param->tx_pending == 0 || param->tx_pending >
 502                                                 VMXNET3_TX_RING_MAX_SIZE)
 503                 return -EINVAL;
 504
 505         if (param->rx_pending == 0 || param->rx_pending >
 506                                                 VMXNET3_RX_RING_MAX_SIZE)
 507                 return -EINVAL;
 508
 509
 510         /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
 511         new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
 512                                                         ~VMXNET3_RING_SIZE_MASK;
 513         new_tx_ring_size = min_t(u32, new_tx_ring_size,
 514                                  VMXNET3_TX_RING_MAX_SIZE);
 515         if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
 516                                                 VMXNET3_RING_SIZE_ALIGN) != 0)
 517                 return -EINVAL;
 518
 519         /* ring0 has to be a multiple of
 520          * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
 521          */
 522         sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
 523         new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
 524         new_rx_ring_size = min_t(u32, new_rx_ring_size,
 525                                  VMXNET3_RX_RING_MAX_SIZE / sz * sz);
 526         if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
 527                                                            sz) != 0)
 528                 return -EINVAL;
 529
 530         if (new_tx_ring_size == adapter->tx_queue[0].tx_ring.size &&
 531             new_rx_ring_size == adapter->rx_queue[0].rx_ring[0].size) {
 532                 return 0;
 533         }
 534
 535         /*
 536          * Reset_work may be in the middle of resetting the device, wait for its
 537          * completion.
 538          */
 539         while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
 540                 msleep(1);
 541
 542         if (netif_running(netdev)) {
 543                 vmxnet3_quiesce_dev(adapter);
 544                 vmxnet3_reset_dev(adapter);
 545
 546                 /* recreate the rx queue and the tx queue based on the
 547                  * new sizes */
 548                 vmxnet3_tq_destroy_all(adapter);
 549                 vmxnet3_rq_destroy_all(adapter);
 550
 551                 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
 552                         new_rx_ring_size, VMXNET3_DEF_RX_RING_SIZE);
 553
 554                 if (err) {
 555                         /* failed, most likely because of OOM, try default
 556                          * size */
 557                         printk(KERN_ERR "%s: failed to apply new sizes, try the"
 558                                 " default ones\n", netdev->name);
 559                         err = vmxnet3_create_queues(adapter,
 560                                                     VMXNET3_DEF_TX_RING_SIZE,
 561                                                     VMXNET3_DEF_RX_RING_SIZE,
 562                                                     VMXNET3_DEF_RX_RING_SIZE);
 563                         if (err) {
 564                                 printk(KERN_ERR "%s: failed to create queues "
 565                                         "with default sizes. Closing it\n",
 566                                         netdev->name);
 567                                 goto out;
 568                         }
 569                 }
 570
 571                 err = vmxnet3_activate_dev(adapter);
 572                 if (err)
 573                         printk(KERN_ERR "%s: failed to re-activate, error %d."
 574                                 " Closing it\n", netdev->name, err);
 575         }
 576
 577 out:
 578         clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
 579         if (err)
 580                 vmxnet3_force_close(adapter);
 581
 582         return err;
 583 }
 584
 585
 586 static int
 587 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
 588                   void *rules)
 589 {
 590         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 591         switch (info->cmd) {
 592         case ETHTOOL_GRXRINGS:
 593                 info->data = adapter->num_rx_queues;
 594                 return 0;
 595         }
 596         return -EOPNOTSUPP;
 597 }
 598
 599 #ifdef VMXNET3_RSS
 600 static int
 601 vmxnet3_get_rss_indir(struct net_device *netdev,
 602                       struct ethtool_rxfh_indir *p)
 603 {
 604         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 605         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 606         unsigned int n = min_t(unsigned int, p->size, rssConf->indTableSize);
 607
 608         p->size = rssConf->indTableSize;
 609         while (n--)
 610                 p->ring_index[n] = rssConf->indTable[n];
 611         return 0;
 612
 613 }
 614
 615 static int
 616 vmxnet3_set_rss_indir(struct net_device *netdev,
 617                       const struct ethtool_rxfh_indir *p)
 618 {
 619         unsigned int i;
 620         unsigned long flags;
 621         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 622         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 623
 624         if (p->size != rssConf->indTableSize)
 625                 return -EINVAL;
 626         for (i = 0; i < rssConf->indTableSize; i++) {
 627                 /*
 628                  * Return with error code if any of the queue indices
 629                  * is out of range
 630                  */
 631                 if (p->ring_index[i] < 0 ||
 632                     p->ring_index[i] >= adapter->num_rx_queues)
 633                         return -EINVAL;
 634         }
 635
 636         for (i = 0; i < rssConf->indTableSize; i++)
 637                 rssConf->indTable[i] = p->ring_index[i];
 638
 639         spin_lock_irqsave(&adapter->cmd_lock, flags);
 640         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 641                                VMXNET3_CMD_UPDATE_RSSIDT);
 642         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 643
 644         return 0;
 645
 646 }
 647 #endif
 648
 649 static struct ethtool_ops vmxnet3_ethtool_ops = {
 650         .get_settings      = vmxnet3_get_settings,
 651         .get_drvinfo       = vmxnet3_get_drvinfo,
 652         .get_regs_len      = vmxnet3_get_regs_len,
 653         .get_regs          = vmxnet3_get_regs,
 654         .get_wol           = vmxnet3_get_wol,
 655         .set_wol           = vmxnet3_set_wol,
 656         .get_link          = ethtool_op_get_link,
 657         .get_rx_csum       = vmxnet3_get_rx_csum,
 658         .set_rx_csum       = vmxnet3_set_rx_csum,
 659         .get_tx_csum       = ethtool_op_get_tx_csum,
 660         .set_tx_csum       = ethtool_op_set_tx_hw_csum,
 661         .get_sg            = ethtool_op_get_sg,
 662         .set_sg            = ethtool_op_set_sg,
 663         .get_tso           = ethtool_op_get_tso,
 664         .set_tso           = ethtool_op_set_tso,
 665         .get_strings       = vmxnet3_get_strings,
 666         .get_flags         = ethtool_op_get_flags,
 667         .set_flags         = vmxnet3_set_flags,
 668         .get_sset_count    = vmxnet3_get_sset_count,
 669         .get_ethtool_stats = vmxnet3_get_ethtool_stats,
 670         .get_ringparam     = vmxnet3_get_ringparam,
 671         .set_ringparam     = vmxnet3_set_ringparam,
 672         .get_rxnfc         = vmxnet3_get_rxnfc,
 673 #ifdef VMXNET3_RSS
 674         .get_rxfh_indir    = vmxnet3_get_rss_indir,
 675         .set_rxfh_indir    = vmxnet3_set_rss_indir,
 676 #endif
 677 };
 678
 679 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
 680 {
 681         SET_ETHTOOL_OPS(netdev, &vmxnet3_ethtool_ops);
 682 }