kernel/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 /* global 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
 206         strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
 207                 sizeof(drvinfo->version));
 208
 209         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
 210                 sizeof(drvinfo->bus_info));
 211         drvinfo->n_stats = vmxnet3_get_sset_count(netdev, ETH_SS_STATS);
 212         drvinfo->testinfo_len = 0;
 213         drvinfo->eedump_len   = 0;
 214         drvinfo->regdump_len  = vmxnet3_get_regs_len(netdev);
 215 }
 216
 217
 218 static void
 219 vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 220 {
 221          struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 222         if (stringset == ETH_SS_STATS) {
 223                 int i, j;
 224                 for (j = 0; j < adapter->num_tx_queues; j++) {
 225                         for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
 226                                 memcpy(buf, vmxnet3_tq_dev_stats[i].desc,
 227                                        ETH_GSTRING_LEN);
 228                                 buf += ETH_GSTRING_LEN;
 229                         }
 230                         for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats);
 231                              i++) {
 232                                 memcpy(buf, vmxnet3_tq_driver_stats[i].desc,
 233                                        ETH_GSTRING_LEN);
 234                                 buf += ETH_GSTRING_LEN;
 235                         }
 236                 }
 237
 238                 for (j = 0; j < adapter->num_rx_queues; j++) {
 239                         for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
 240                                 memcpy(buf, vmxnet3_rq_dev_stats[i].desc,
 241                                        ETH_GSTRING_LEN);
 242                                 buf += ETH_GSTRING_LEN;
 243                         }
 244                         for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats);
 245                              i++) {
 246                                 memcpy(buf, vmxnet3_rq_driver_stats[i].desc,
 247                                        ETH_GSTRING_LEN);
 248                                 buf += ETH_GSTRING_LEN;
 249                         }
 250                 }
 251
 252                 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
 253                         memcpy(buf, vmxnet3_global_stats[i].desc,
 254                                 ETH_GSTRING_LEN);
 255                         buf += ETH_GSTRING_LEN;
 256                 }
 257         }
 258 }
 259
 260 int vmxnet3_set_features(struct net_device *netdev, netdev_features_t features)
 261 {
 262         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 263         unsigned long flags;
 264         netdev_features_t changed = features ^ netdev->features;
 265
 266         if (changed & (NETIF_F_RXCSUM | NETIF_F_LRO |
 267                        NETIF_F_HW_VLAN_CTAG_RX)) {
 268                 if (features & NETIF_F_RXCSUM)
 269                         adapter->shared->devRead.misc.uptFeatures |=
 270                         UPT1_F_RXCSUM;
 271                 else
 272                         adapter->shared->devRead.misc.uptFeatures &=
 273                         ~UPT1_F_RXCSUM;
 274
 275                 /* update hardware LRO capability accordingly */
 276                 if (features & NETIF_F_LRO)
 277                         adapter->shared->devRead.misc.uptFeatures |=
 278                                                         UPT1_F_LRO;
 279                 else
 280                         adapter->shared->devRead.misc.uptFeatures &=
 281                                                         ~UPT1_F_LRO;
 282
 283                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
 284                         adapter->shared->devRead.misc.uptFeatures |=
 285                         UPT1_F_RXVLAN;
 286                 else
 287                         adapter->shared->devRead.misc.uptFeatures &=
 288                         ~UPT1_F_RXVLAN;
 289
 290                 spin_lock_irqsave(&adapter->cmd_lock, flags);
 291                 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 292                                        VMXNET3_CMD_UPDATE_FEATURE);
 293                 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 294         }
 295         return 0;
 296 }
 297
 298 static void
 299 vmxnet3_get_ethtool_stats(struct net_device *netdev,
 300                           struct ethtool_stats *stats, u64  *buf)
 301 {
 302         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 303         unsigned long flags;
 304         u8 *base;
 305         int i;
 306         int j = 0;
 307
 308         spin_lock_irqsave(&adapter->cmd_lock, flags);
 309         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 310         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 311
 312         /* this does assume each counter is 64-bit wide */
 313         for (j = 0; j < adapter->num_tx_queues; j++) {
 314                 base = (u8 *)&adapter->tqd_start[j].stats;
 315                 *buf++ = (u64)j;
 316                 for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
 317                         *buf++ = *(u64 *)(base +
 318                                           vmxnet3_tq_dev_stats[i].offset);
 319
 320                 base = (u8 *)&adapter->tx_queue[j].stats;
 321                 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
 322                         *buf++ = *(u64 *)(base +
 323                                           vmxnet3_tq_driver_stats[i].offset);
 324         }
 325
 326         for (j = 0; j < adapter->num_rx_queues; j++) {
 327                 base = (u8 *)&adapter->rqd_start[j].stats;
 328                 *buf++ = (u64) j;
 329                 for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
 330                         *buf++ = *(u64 *)(base +
 331                                           vmxnet3_rq_dev_stats[i].offset);
 332
 333                 base = (u8 *)&adapter->rx_queue[j].stats;
 334                 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
 335                         *buf++ = *(u64 *)(base +
 336                                           vmxnet3_rq_driver_stats[i].offset);
 337         }
 338
 339         base = (u8 *)adapter;
 340         for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
 341                 *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
 342 }
 343
 344
 345 static void
 346 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
 347 {
 348         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 349         u32 *buf = p;
 350         int i = 0, j = 0;
 351
 352         memset(p, 0, vmxnet3_get_regs_len(netdev));
 353
 354         regs->version = 1;
 355
 356         /* Update vmxnet3_get_regs_len if we want to dump more registers */
 357
 358         /* make each ring use multiple of 16 bytes */
 359         for (i = 0; i < adapter->num_tx_queues; i++) {
 360                 buf[j++] = adapter->tx_queue[i].tx_ring.next2fill;
 361                 buf[j++] = adapter->tx_queue[i].tx_ring.next2comp;
 362                 buf[j++] = adapter->tx_queue[i].tx_ring.gen;
 363                 buf[j++] = 0;
 364
 365                 buf[j++] = adapter->tx_queue[i].comp_ring.next2proc;
 366                 buf[j++] = adapter->tx_queue[i].comp_ring.gen;
 367                 buf[j++] = adapter->tx_queue[i].stopped;
 368                 buf[j++] = 0;
 369         }
 370
 371         for (i = 0; i < adapter->num_rx_queues; i++) {
 372                 buf[j++] = adapter->rx_queue[i].rx_ring[0].next2fill;
 373                 buf[j++] = adapter->rx_queue[i].rx_ring[0].next2comp;
 374                 buf[j++] = adapter->rx_queue[i].rx_ring[0].gen;
 375                 buf[j++] = 0;
 376
 377                 buf[j++] = adapter->rx_queue[i].rx_ring[1].next2fill;
 378                 buf[j++] = adapter->rx_queue[i].rx_ring[1].next2comp;
 379                 buf[j++] = adapter->rx_queue[i].rx_ring[1].gen;
 380                 buf[j++] = 0;
 381
 382                 buf[j++] = adapter->rx_queue[i].comp_ring.next2proc;
 383                 buf[j++] = adapter->rx_queue[i].comp_ring.gen;
 384                 buf[j++] = 0;
 385                 buf[j++] = 0;
 386         }
 387
 388 }
 389
 390
 391 static void
 392 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 393 {
 394         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 395
 396         wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
 397         wol->wolopts = adapter->wol;
 398 }
 399
 400
 401 static int
 402 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 403 {
 404         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 405
 406         if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
 407                             WAKE_MAGICSECURE)) {
 408                 return -EOPNOTSUPP;
 409         }
 410
 411         adapter->wol = wol->wolopts;
 412
 413         device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 414
 415         return 0;
 416 }
 417
 418
 419 static int
 420 vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 421 {
 422         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 423
 424         ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
 425                           SUPPORTED_TP;
 426         ecmd->advertising = ADVERTISED_TP;
 427         ecmd->port = PORT_TP;
 428         ecmd->transceiver = XCVR_INTERNAL;
 429
 430         if (adapter->link_speed) {
 431                 ethtool_cmd_speed_set(ecmd, adapter->link_speed);
 432                 ecmd->duplex = DUPLEX_FULL;
 433         } else {
 434                 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
 435                 ecmd->duplex = DUPLEX_UNKNOWN;
 436         }
 437         return 0;
 438 }
 439
 440
 441 static void
 442 vmxnet3_get_ringparam(struct net_device *netdev,
 443                       struct ethtool_ringparam *param)
 444 {
 445         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 446
 447         param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
 448         param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
 449         param->rx_mini_max_pending = 0;
 450         param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
 451
 452         param->rx_pending = adapter->rx_ring_size;
 453         param->tx_pending = adapter->tx_ring_size;
 454         param->rx_mini_pending = 0;
 455         param->rx_jumbo_pending = adapter->rx_ring2_size;
 456 }
 457
 458
 459 static int
 460 vmxnet3_set_ringparam(struct net_device *netdev,
 461                       struct ethtool_ringparam *param)
 462 {
 463         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 464         u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
 465         u32 sz;
 466         int err = 0;
 467
 468         if (param->tx_pending == 0 || param->tx_pending >
 469                                                 VMXNET3_TX_RING_MAX_SIZE)
 470                 return -EINVAL;
 471
 472         if (param->rx_pending == 0 || param->rx_pending >
 473                                                 VMXNET3_RX_RING_MAX_SIZE)
 474                 return -EINVAL;
 475
 476         if (param->rx_jumbo_pending == 0 ||
 477             param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
 478                 return -EINVAL;
 479
 480         /* if adapter not yet initialized, do nothing */
 481         if (adapter->rx_buf_per_pkt == 0) {
 482                 netdev_err(netdev, "adapter not completely initialized, "
 483                            "ring size cannot be changed yet\n");
 484                 return -EOPNOTSUPP;
 485         }
 486
 487         /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
 488         new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
 489                                                         ~VMXNET3_RING_SIZE_MASK;
 490         new_tx_ring_size = min_t(u32, new_tx_ring_size,
 491                                  VMXNET3_TX_RING_MAX_SIZE);
 492         if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
 493                                                 VMXNET3_RING_SIZE_ALIGN) != 0)
 494                 return -EINVAL;
 495
 496         /* ring0 has to be a multiple of
 497          * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
 498          */
 499         sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
 500         new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
 501         new_rx_ring_size = min_t(u32, new_rx_ring_size,
 502                                  VMXNET3_RX_RING_MAX_SIZE / sz * sz);
 503         if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
 504                                                            sz) != 0)
 505                 return -EINVAL;
 506
 507         /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
 508         new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
 509                                 ~VMXNET3_RING_SIZE_MASK;
 510         new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
 511                                   VMXNET3_RX_RING2_MAX_SIZE);
 512
 513         if (new_tx_ring_size == adapter->tx_ring_size &&
 514             new_rx_ring_size == adapter->rx_ring_size &&
 515             new_rx_ring2_size == adapter->rx_ring2_size) {
 516                 return 0;
 517         }
 518
 519         /*
 520          * Reset_work may be in the middle of resetting the device, wait for its
 521          * completion.
 522          */
 523         while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
 524                 msleep(1);
 525
 526         if (netif_running(netdev)) {
 527                 vmxnet3_quiesce_dev(adapter);
 528                 vmxnet3_reset_dev(adapter);
 529
 530                 /* recreate the rx queue and the tx queue based on the
 531                  * new sizes */
 532                 vmxnet3_tq_destroy_all(adapter);
 533                 vmxnet3_rq_destroy_all(adapter);
 534
 535                 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
 536                         new_rx_ring_size, new_rx_ring2_size);
 537
 538                 if (err) {
 539                         /* failed, most likely because of OOM, try default
 540                          * size */
 541                         netdev_err(netdev, "failed to apply new sizes, "
 542                                    "try the default ones\n");
 543                         new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
 544                         new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
 545                         new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
 546                         err = vmxnet3_create_queues(adapter,
 547                                                     new_tx_ring_size,
 548                                                     new_rx_ring_size,
 549                                                     new_rx_ring2_size);
 550                         if (err) {
 551                                 netdev_err(netdev, "failed to create queues "
 552                                            "with default sizes. Closing it\n");
 553                                 goto out;
 554                         }
 555                 }
 556
 557                 err = vmxnet3_activate_dev(adapter);
 558                 if (err)
 559                         netdev_err(netdev, "failed to re-activate, error %d."
 560                                    " Closing it\n", err);
 561         }
 562         adapter->tx_ring_size = new_tx_ring_size;
 563         adapter->rx_ring_size = new_rx_ring_size;
 564         adapter->rx_ring2_size = new_rx_ring2_size;
 565
 566 out:
 567         clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
 568         if (err)
 569                 vmxnet3_force_close(adapter);
 570
 571         return err;
 572 }
 573
 574
 575 static int
 576 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
 577                   u32 *rules)
 578 {
 579         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 580         switch (info->cmd) {
 581         case ETHTOOL_GRXRINGS:
 582                 info->data = adapter->num_rx_queues;
 583                 return 0;
 584         }
 585         return -EOPNOTSUPP;
 586 }
 587
 588 #ifdef VMXNET3_RSS
 589 static u32
 590 vmxnet3_get_rss_indir_size(struct net_device *netdev)
 591 {
 592         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 593         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 594
 595         return rssConf->indTableSize;
 596 }
 597
 598 static int
 599 vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
 600 {
 601         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 602         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 603         unsigned int n = rssConf->indTableSize;
 604
 605         if (hfunc)
 606                 *hfunc = ETH_RSS_HASH_TOP;
 607         if (!p)
 608                 return 0;
 609         while (n--)
 610                 p[n] = rssConf->indTable[n];
 611         return 0;
 612
 613 }
 614
 615 static int
 616 vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
 617                 const u8 hfunc)
 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         /* We do not allow change in unsupported parameters */
 625         if (key ||
 626             (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
 627                 return -EOPNOTSUPP;
 628         if (!p)
 629                 return 0;
 630         for (i = 0; i < rssConf->indTableSize; i++)
 631                 rssConf->indTable[i] = p[i];
 632
 633         spin_lock_irqsave(&adapter->cmd_lock, flags);
 634         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 635                                VMXNET3_CMD_UPDATE_RSSIDT);
 636         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 637
 638         return 0;
 639
 640 }
 641 #endif
 642
 643 static const struct ethtool_ops vmxnet3_ethtool_ops = {
 644         .get_settings      = vmxnet3_get_settings,
 645         .get_drvinfo       = vmxnet3_get_drvinfo,
 646         .get_regs_len      = vmxnet3_get_regs_len,
 647         .get_regs          = vmxnet3_get_regs,
 648         .get_wol           = vmxnet3_get_wol,
 649         .set_wol           = vmxnet3_set_wol,
 650         .get_link          = ethtool_op_get_link,
 651         .get_strings       = vmxnet3_get_strings,
 652         .get_sset_count    = vmxnet3_get_sset_count,
 653         .get_ethtool_stats = vmxnet3_get_ethtool_stats,
 654         .get_ringparam     = vmxnet3_get_ringparam,
 655         .set_ringparam     = vmxnet3_set_ringparam,
 656         .get_rxnfc         = vmxnet3_get_rxnfc,
 657 #ifdef VMXNET3_RSS
 658         .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
 659         .get_rxfh          = vmxnet3_get_rss,
 660         .set_rxfh          = vmxnet3_set_rss,
 661 #endif
 662 };
 663
 664 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
 665 {
 666         netdev->ethtool_ops = &vmxnet3_ethtool_ops;
 667 }