drivers/net/vmxnet3/vmxnet3_ethtool.c

   1 /*
   2  * Linux driver for VMware's vmxnet3 ethernet NIC.
   3  *
   4  * Copyright (C) 2008-2020, 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: 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 void
 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
 165 static int
 166 vmxnet3_get_sset_count(struct net_device *netdev, int sset)
 167 {
 168         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 169         switch (sset) {
 170         case ETH_SS_STATS:
 171                 return (ARRAY_SIZE(vmxnet3_tq_dev_stats) +
 172                         ARRAY_SIZE(vmxnet3_tq_driver_stats)) *
 173                        adapter->num_tx_queues +
 174                        (ARRAY_SIZE(vmxnet3_rq_dev_stats) +
 175                         ARRAY_SIZE(vmxnet3_rq_driver_stats)) *
 176                        adapter->num_rx_queues +
 177                         ARRAY_SIZE(vmxnet3_global_stats);
 178         default:
 179                 return -EOPNOTSUPP;
 180         }
 181 }
 182
 183
 184 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
 185  * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
 186  * Therefore, if any registers are added, removed or modified, then a version
 187  * bump and a corresponding change in the vmxnet3 support for ethtool(8)
 188  * --register-dump would be required.
 189  */
 190 static int
 191 vmxnet3_get_regs_len(struct net_device *netdev)
 192 {
 193         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 194
 195         return ((9 /* BAR1 registers */ +
 196                 (1 + adapter->intr.num_intrs) +
 197                 (1 + adapter->num_tx_queues * 17 /* Tx queue registers */) +
 198                 (1 + adapter->num_rx_queues * 23 /* Rx queue registers */)) *
 199                 sizeof(u32));
 200 }
 201
 202
 203 static void
 204 vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
 205 {
 206         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 207
 208         strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
 209
 210         strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
 211                 sizeof(drvinfo->version));
 212
 213         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
 214                 sizeof(drvinfo->bus_info));
 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 netdev_features_t vmxnet3_fix_features(struct net_device *netdev,
 261                                        netdev_features_t features)
 262 {
 263         /* If Rx checksum is disabled, then LRO should also be disabled */
 264         if (!(features & NETIF_F_RXCSUM))
 265                 features &= ~NETIF_F_LRO;
 266
 267         return features;
 268 }
 269
 270 static void vmxnet3_enable_encap_offloads(struct net_device *netdev)
 271 {
 272         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 273
 274         if (VMXNET3_VERSION_GE_4(adapter)) {
 275                 netdev->hw_enc_features |= NETIF_F_SG | NETIF_F_RXCSUM |
 276                         NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
 277                         NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
 278                         NETIF_F_LRO | NETIF_F_GSO_UDP_TUNNEL |
 279                         NETIF_F_GSO_UDP_TUNNEL_CSUM;
 280         }
 281 }
 282
 283 static void vmxnet3_disable_encap_offloads(struct net_device *netdev)
 284 {
 285         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 286
 287         if (VMXNET3_VERSION_GE_4(adapter)) {
 288                 netdev->hw_enc_features &= ~(NETIF_F_SG | NETIF_F_RXCSUM |
 289                         NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
 290                         NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
 291                         NETIF_F_LRO | NETIF_F_GSO_UDP_TUNNEL |
 292                         NETIF_F_GSO_UDP_TUNNEL_CSUM);
 293         }
 294 }
 295
 296 int vmxnet3_set_features(struct net_device *netdev, netdev_features_t features)
 297 {
 298         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 299         unsigned long flags;
 300         netdev_features_t changed = features ^ netdev->features;
 301         netdev_features_t tun_offload_mask = NETIF_F_GSO_UDP_TUNNEL |
 302                                              NETIF_F_GSO_UDP_TUNNEL_CSUM;
 303         u8 udp_tun_enabled = (netdev->features & tun_offload_mask) != 0;
 304
 305         if (changed & (NETIF_F_RXCSUM | NETIF_F_LRO |
 306                        NETIF_F_HW_VLAN_CTAG_RX | tun_offload_mask)) {
 307                 if (features & NETIF_F_RXCSUM)
 308                         adapter->shared->devRead.misc.uptFeatures |=
 309                         UPT1_F_RXCSUM;
 310                 else
 311                         adapter->shared->devRead.misc.uptFeatures &=
 312                         ~UPT1_F_RXCSUM;
 313
 314                 /* update hardware LRO capability accordingly */
 315                 if (features & NETIF_F_LRO)
 316                         adapter->shared->devRead.misc.uptFeatures |=
 317                                                         UPT1_F_LRO;
 318                 else
 319                         adapter->shared->devRead.misc.uptFeatures &=
 320                                                         ~UPT1_F_LRO;
 321
 322                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
 323                         adapter->shared->devRead.misc.uptFeatures |=
 324                         UPT1_F_RXVLAN;
 325                 else
 326                         adapter->shared->devRead.misc.uptFeatures &=
 327                         ~UPT1_F_RXVLAN;
 328
 329                 if ((features & tun_offload_mask) != 0 && !udp_tun_enabled) {
 330                         vmxnet3_enable_encap_offloads(netdev);
 331                         adapter->shared->devRead.misc.uptFeatures |=
 332                         UPT1_F_RXINNEROFLD;
 333                 } else if ((features & tun_offload_mask) == 0 &&
 334                            udp_tun_enabled) {
 335                         vmxnet3_disable_encap_offloads(netdev);
 336                         adapter->shared->devRead.misc.uptFeatures &=
 337                         ~UPT1_F_RXINNEROFLD;
 338                 }
 339
 340                 spin_lock_irqsave(&adapter->cmd_lock, flags);
 341                 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 342                                        VMXNET3_CMD_UPDATE_FEATURE);
 343                 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 344         }
 345         return 0;
 346 }
 347
 348 static void
 349 vmxnet3_get_ethtool_stats(struct net_device *netdev,
 350                           struct ethtool_stats *stats, u64  *buf)
 351 {
 352         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 353         unsigned long flags;
 354         u8 *base;
 355         int i;
 356         int j = 0;
 357
 358         spin_lock_irqsave(&adapter->cmd_lock, flags);
 359         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
 360         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 361
 362         /* this does assume each counter is 64-bit wide */
 363         for (j = 0; j < adapter->num_tx_queues; j++) {
 364                 base = (u8 *)&adapter->tqd_start[j].stats;
 365                 *buf++ = (u64)j;
 366                 for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
 367                         *buf++ = *(u64 *)(base +
 368                                           vmxnet3_tq_dev_stats[i].offset);
 369
 370                 base = (u8 *)&adapter->tx_queue[j].stats;
 371                 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
 372                         *buf++ = *(u64 *)(base +
 373                                           vmxnet3_tq_driver_stats[i].offset);
 374         }
 375
 376         for (j = 0; j < adapter->num_rx_queues; j++) {
 377                 base = (u8 *)&adapter->rqd_start[j].stats;
 378                 *buf++ = (u64) j;
 379                 for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
 380                         *buf++ = *(u64 *)(base +
 381                                           vmxnet3_rq_dev_stats[i].offset);
 382
 383                 base = (u8 *)&adapter->rx_queue[j].stats;
 384                 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
 385                         *buf++ = *(u64 *)(base +
 386                                           vmxnet3_rq_driver_stats[i].offset);
 387         }
 388
 389         base = (u8 *)adapter;
 390         for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
 391                 *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
 392 }
 393
 394
 395 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
 396  * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
 397  * Therefore, if any registers are added, removed or modified, then a version
 398  * bump and a corresponding change in the vmxnet3 support for ethtool(8)
 399  * --register-dump would be required.
 400  */
 401 static void
 402 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
 403 {
 404         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 405         u32 *buf = p;
 406         int i = 0, j = 0;
 407
 408         memset(p, 0, vmxnet3_get_regs_len(netdev));
 409
 410         regs->version = 2;
 411
 412         /* Update vmxnet3_get_regs_len if we want to dump more registers */
 413
 414         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
 415         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
 416         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAL);
 417         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAH);
 418         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
 419         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
 420         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
 421         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
 422         buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ECR);
 423
 424         buf[j++] = adapter->intr.num_intrs;
 425         for (i = 0; i < adapter->intr.num_intrs; i++) {
 426                 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_IMR
 427                                                  + i * VMXNET3_REG_ALIGN);
 428         }
 429
 430         buf[j++] = adapter->num_tx_queues;
 431         for (i = 0; i < adapter->num_tx_queues; i++) {
 432                 struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i];
 433
 434                 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_TXPROD +
 435                                                  i * VMXNET3_REG_ALIGN);
 436
 437                 buf[j++] = VMXNET3_GET_ADDR_LO(tq->tx_ring.basePA);
 438                 buf[j++] = VMXNET3_GET_ADDR_HI(tq->tx_ring.basePA);
 439                 buf[j++] = tq->tx_ring.size;
 440                 buf[j++] = tq->tx_ring.next2fill;
 441                 buf[j++] = tq->tx_ring.next2comp;
 442                 buf[j++] = tq->tx_ring.gen;
 443
 444                 buf[j++] = VMXNET3_GET_ADDR_LO(tq->data_ring.basePA);
 445                 buf[j++] = VMXNET3_GET_ADDR_HI(tq->data_ring.basePA);
 446                 buf[j++] = tq->data_ring.size;
 447                 buf[j++] = tq->txdata_desc_size;
 448
 449                 buf[j++] = VMXNET3_GET_ADDR_LO(tq->comp_ring.basePA);
 450                 buf[j++] = VMXNET3_GET_ADDR_HI(tq->comp_ring.basePA);
 451                 buf[j++] = tq->comp_ring.size;
 452                 buf[j++] = tq->comp_ring.next2proc;
 453                 buf[j++] = tq->comp_ring.gen;
 454
 455                 buf[j++] = tq->stopped;
 456         }
 457
 458         buf[j++] = adapter->num_rx_queues;
 459         for (i = 0; i < adapter->num_rx_queues; i++) {
 460                 struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
 461
 462                 buf[j++] =  VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD +
 463                                                   i * VMXNET3_REG_ALIGN);
 464                 buf[j++] =  VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD2 +
 465                                                   i * VMXNET3_REG_ALIGN);
 466
 467                 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[0].basePA);
 468                 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[0].basePA);
 469                 buf[j++] = rq->rx_ring[0].size;
 470                 buf[j++] = rq->rx_ring[0].next2fill;
 471                 buf[j++] = rq->rx_ring[0].next2comp;
 472                 buf[j++] = rq->rx_ring[0].gen;
 473
 474                 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[1].basePA);
 475                 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[1].basePA);
 476                 buf[j++] = rq->rx_ring[1].size;
 477                 buf[j++] = rq->rx_ring[1].next2fill;
 478                 buf[j++] = rq->rx_ring[1].next2comp;
 479                 buf[j++] = rq->rx_ring[1].gen;
 480
 481                 buf[j++] = VMXNET3_GET_ADDR_LO(rq->data_ring.basePA);
 482                 buf[j++] = VMXNET3_GET_ADDR_HI(rq->data_ring.basePA);
 483                 buf[j++] = rq->rx_ring[0].size;
 484                 buf[j++] = rq->data_ring.desc_size;
 485
 486                 buf[j++] = VMXNET3_GET_ADDR_LO(rq->comp_ring.basePA);
 487                 buf[j++] = VMXNET3_GET_ADDR_HI(rq->comp_ring.basePA);
 488                 buf[j++] = rq->comp_ring.size;
 489                 buf[j++] = rq->comp_ring.next2proc;
 490                 buf[j++] = rq->comp_ring.gen;
 491         }
 492 }
 493
 494
 495 static void
 496 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 497 {
 498         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 499
 500         wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
 501         wol->wolopts = adapter->wol;
 502 }
 503
 504
 505 static int
 506 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 507 {
 508         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 509
 510         if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
 511                             WAKE_MAGICSECURE)) {
 512                 return -EOPNOTSUPP;
 513         }
 514
 515         adapter->wol = wol->wolopts;
 516
 517         device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 518
 519         return 0;
 520 }
 521
 522
 523 static int
 524 vmxnet3_get_link_ksettings(struct net_device *netdev,
 525                            struct ethtool_link_ksettings *ecmd)
 526 {
 527         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 528
 529         ethtool_link_ksettings_zero_link_mode(ecmd, supported);
 530         ethtool_link_ksettings_add_link_mode(ecmd, supported, 10000baseT_Full);
 531         ethtool_link_ksettings_add_link_mode(ecmd, supported, 1000baseT_Full);
 532         ethtool_link_ksettings_add_link_mode(ecmd, supported, TP);
 533         ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
 534         ethtool_link_ksettings_add_link_mode(ecmd, advertising, TP);
 535         ecmd->base.port = PORT_TP;
 536
 537         if (adapter->link_speed) {
 538                 ecmd->base.speed = adapter->link_speed;
 539                 ecmd->base.duplex = DUPLEX_FULL;
 540         } else {
 541                 ecmd->base.speed = SPEED_UNKNOWN;
 542                 ecmd->base.duplex = DUPLEX_UNKNOWN;
 543         }
 544         return 0;
 545 }
 546
 547
 548 static void
 549 vmxnet3_get_ringparam(struct net_device *netdev,
 550                       struct ethtool_ringparam *param)
 551 {
 552         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 553
 554         param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
 555         param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
 556         param->rx_mini_max_pending = VMXNET3_VERSION_GE_3(adapter) ?
 557                 VMXNET3_RXDATA_DESC_MAX_SIZE : 0;
 558         param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
 559
 560         param->rx_pending = adapter->rx_ring_size;
 561         param->tx_pending = adapter->tx_ring_size;
 562         param->rx_mini_pending = VMXNET3_VERSION_GE_3(adapter) ?
 563                 adapter->rxdata_desc_size : 0;
 564         param->rx_jumbo_pending = adapter->rx_ring2_size;
 565 }
 566
 567
 568 static int
 569 vmxnet3_set_ringparam(struct net_device *netdev,
 570                       struct ethtool_ringparam *param)
 571 {
 572         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 573         u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
 574         u16 new_rxdata_desc_size;
 575         u32 sz;
 576         int err = 0;
 577
 578         if (param->tx_pending == 0 || param->tx_pending >
 579                                                 VMXNET3_TX_RING_MAX_SIZE)
 580                 return -EINVAL;
 581
 582         if (param->rx_pending == 0 || param->rx_pending >
 583                                                 VMXNET3_RX_RING_MAX_SIZE)
 584                 return -EINVAL;
 585
 586         if (param->rx_jumbo_pending == 0 ||
 587             param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
 588                 return -EINVAL;
 589
 590         /* if adapter not yet initialized, do nothing */
 591         if (adapter->rx_buf_per_pkt == 0) {
 592                 netdev_err(netdev, "adapter not completely initialized, "
 593                            "ring size cannot be changed yet\n");
 594                 return -EOPNOTSUPP;
 595         }
 596
 597         if (VMXNET3_VERSION_GE_3(adapter)) {
 598                 if (param->rx_mini_pending > VMXNET3_RXDATA_DESC_MAX_SIZE)
 599                         return -EINVAL;
 600         } else if (param->rx_mini_pending != 0) {
 601                 return -EINVAL;
 602         }
 603
 604         /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
 605         new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
 606                                                         ~VMXNET3_RING_SIZE_MASK;
 607         new_tx_ring_size = min_t(u32, new_tx_ring_size,
 608                                  VMXNET3_TX_RING_MAX_SIZE);
 609         if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
 610                                                 VMXNET3_RING_SIZE_ALIGN) != 0)
 611                 return -EINVAL;
 612
 613         /* ring0 has to be a multiple of
 614          * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
 615          */
 616         sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
 617         new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
 618         new_rx_ring_size = min_t(u32, new_rx_ring_size,
 619                                  VMXNET3_RX_RING_MAX_SIZE / sz * sz);
 620         if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
 621                                                            sz) != 0)
 622                 return -EINVAL;
 623
 624         /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
 625         new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
 626                                 ~VMXNET3_RING_SIZE_MASK;
 627         new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
 628                                   VMXNET3_RX_RING2_MAX_SIZE);
 629
 630         /* rx data ring buffer size has to be a multiple of
 631          * VMXNET3_RXDATA_DESC_SIZE_ALIGN
 632          */
 633         new_rxdata_desc_size =
 634                 (param->rx_mini_pending + VMXNET3_RXDATA_DESC_SIZE_MASK) &
 635                 ~VMXNET3_RXDATA_DESC_SIZE_MASK;
 636         new_rxdata_desc_size = min_t(u16, new_rxdata_desc_size,
 637                                      VMXNET3_RXDATA_DESC_MAX_SIZE);
 638
 639         if (new_tx_ring_size == adapter->tx_ring_size &&
 640             new_rx_ring_size == adapter->rx_ring_size &&
 641             new_rx_ring2_size == adapter->rx_ring2_size &&
 642             new_rxdata_desc_size == adapter->rxdata_desc_size) {
 643                 return 0;
 644         }
 645
 646         /*
 647          * Reset_work may be in the middle of resetting the device, wait for its
 648          * completion.
 649          */
 650         while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
 651                 usleep_range(1000, 2000);
 652
 653         if (netif_running(netdev)) {
 654                 vmxnet3_quiesce_dev(adapter);
 655                 vmxnet3_reset_dev(adapter);
 656
 657                 /* recreate the rx queue and the tx queue based on the
 658                  * new sizes */
 659                 vmxnet3_tq_destroy_all(adapter);
 660                 vmxnet3_rq_destroy_all(adapter);
 661
 662                 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
 663                                             new_rx_ring_size, new_rx_ring2_size,
 664                                             adapter->txdata_desc_size,
 665                                             new_rxdata_desc_size);
 666                 if (err) {
 667                         /* failed, most likely because of OOM, try default
 668                          * size */
 669                         netdev_err(netdev, "failed to apply new sizes, "
 670                                    "try the default ones\n");
 671                         new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
 672                         new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
 673                         new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
 674                         new_rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
 675                                 VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
 676
 677                         err = vmxnet3_create_queues(adapter,
 678                                                     new_tx_ring_size,
 679                                                     new_rx_ring_size,
 680                                                     new_rx_ring2_size,
 681                                                     adapter->txdata_desc_size,
 682                                                     new_rxdata_desc_size);
 683                         if (err) {
 684                                 netdev_err(netdev, "failed to create queues "
 685                                            "with default sizes. Closing it\n");
 686                                 goto out;
 687                         }
 688                 }
 689
 690                 err = vmxnet3_activate_dev(adapter);
 691                 if (err)
 692                         netdev_err(netdev, "failed to re-activate, error %d."
 693                                    " Closing it\n", err);
 694         }
 695         adapter->tx_ring_size = new_tx_ring_size;
 696         adapter->rx_ring_size = new_rx_ring_size;
 697         adapter->rx_ring2_size = new_rx_ring2_size;
 698         adapter->rxdata_desc_size = new_rxdata_desc_size;
 699
 700 out:
 701         clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
 702         if (err)
 703                 vmxnet3_force_close(adapter);
 704
 705         return err;
 706 }
 707
 708 static int
 709 vmxnet3_get_rss_hash_opts(struct vmxnet3_adapter *adapter,
 710                           struct ethtool_rxnfc *info)
 711 {
 712         enum Vmxnet3_RSSField rss_fields;
 713
 714         if (netif_running(adapter->netdev)) {
 715                 unsigned long flags;
 716
 717                 spin_lock_irqsave(&adapter->cmd_lock, flags);
 718
 719                 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 720                                        VMXNET3_CMD_GET_RSS_FIELDS);
 721                 rss_fields = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
 722                 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 723         } else {
 724                 rss_fields = adapter->rss_fields;
 725         }
 726
 727         info->data = 0;
 728
 729         /* Report default options for RSS on vmxnet3 */
 730         switch (info->flow_type) {
 731         case TCP_V4_FLOW:
 732         case TCP_V6_FLOW:
 733                 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3 |
 734                               RXH_IP_SRC | RXH_IP_DST;
 735                 break;
 736         case UDP_V4_FLOW:
 737                 if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP4)
 738                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 739                 info->data |= RXH_IP_SRC | RXH_IP_DST;
 740                 break;
 741         case AH_ESP_V4_FLOW:
 742         case AH_V4_FLOW:
 743         case ESP_V4_FLOW:
 744                 if (rss_fields & VMXNET3_RSS_FIELDS_ESPIP4)
 745                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 746                 fallthrough;
 747         case SCTP_V4_FLOW:
 748         case IPV4_FLOW:
 749                 info->data |= RXH_IP_SRC | RXH_IP_DST;
 750                 break;
 751         case UDP_V6_FLOW:
 752                 if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP6)
 753                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 754                 info->data |= RXH_IP_SRC | RXH_IP_DST;
 755                 break;
 756         case AH_ESP_V6_FLOW:
 757         case AH_V6_FLOW:
 758         case ESP_V6_FLOW:
 759         case SCTP_V6_FLOW:
 760         case IPV6_FLOW:
 761                 info->data |= RXH_IP_SRC | RXH_IP_DST;
 762                 break;
 763         default:
 764                 return -EINVAL;
 765         }
 766
 767         return 0;
 768 }
 769
 770 static int
 771 vmxnet3_set_rss_hash_opt(struct net_device *netdev,
 772                          struct vmxnet3_adapter *adapter,
 773                          struct ethtool_rxnfc *nfc)
 774 {
 775         enum Vmxnet3_RSSField rss_fields = adapter->rss_fields;
 776
 777         /* RSS does not support anything other than hashing
 778          * to queues on src and dst IPs and ports
 779          */
 780         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
 781                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
 782                 return -EINVAL;
 783
 784         switch (nfc->flow_type) {
 785         case TCP_V4_FLOW:
 786         case TCP_V6_FLOW:
 787                 if (!(nfc->data & RXH_IP_SRC) ||
 788                     !(nfc->data & RXH_IP_DST) ||
 789                     !(nfc->data & RXH_L4_B_0_1) ||
 790                     !(nfc->data & RXH_L4_B_2_3))
 791                         return -EINVAL;
 792                 break;
 793         case UDP_V4_FLOW:
 794                 if (!(nfc->data & RXH_IP_SRC) ||
 795                     !(nfc->data & RXH_IP_DST))
 796                         return -EINVAL;
 797                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 798                 case 0:
 799                         rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP4;
 800                         break;
 801                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 802                         rss_fields |= VMXNET3_RSS_FIELDS_UDPIP4;
 803                         break;
 804                 default:
 805                         return -EINVAL;
 806                 }
 807                 break;
 808         case UDP_V6_FLOW:
 809                 if (!(nfc->data & RXH_IP_SRC) ||
 810                     !(nfc->data & RXH_IP_DST))
 811                         return -EINVAL;
 812                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 813                 case 0:
 814                         rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP6;
 815                         break;
 816                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 817                         rss_fields |= VMXNET3_RSS_FIELDS_UDPIP6;
 818                         break;
 819                 default:
 820                         return -EINVAL;
 821                 }
 822                 break;
 823         case ESP_V4_FLOW:
 824         case AH_V4_FLOW:
 825         case AH_ESP_V4_FLOW:
 826                 if (!(nfc->data & RXH_IP_SRC) ||
 827                     !(nfc->data & RXH_IP_DST))
 828                         return -EINVAL;
 829                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 830                 case 0:
 831                         rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP4;
 832                         break;
 833                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 834                         rss_fields |= VMXNET3_RSS_FIELDS_ESPIP4;
 835                 break;
 836                 default:
 837                         return -EINVAL;
 838                 }
 839                 break;
 840         case ESP_V6_FLOW:
 841         case AH_V6_FLOW:
 842         case AH_ESP_V6_FLOW:
 843         case SCTP_V4_FLOW:
 844         case SCTP_V6_FLOW:
 845                 if (!(nfc->data & RXH_IP_SRC) ||
 846                     !(nfc->data & RXH_IP_DST) ||
 847                     (nfc->data & RXH_L4_B_0_1) ||
 848                     (nfc->data & RXH_L4_B_2_3))
 849                         return -EINVAL;
 850                 break;
 851         default:
 852                 return -EINVAL;
 853         }
 854
 855         /* if we changed something we need to update flags */
 856         if (rss_fields != adapter->rss_fields) {
 857                 adapter->default_rss_fields = false;
 858                 if (netif_running(netdev)) {
 859                         struct Vmxnet3_DriverShared *shared = adapter->shared;
 860                         union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
 861                         unsigned long flags;
 862
 863                         spin_lock_irqsave(&adapter->cmd_lock, flags);
 864                         cmdInfo->setRssFields = rss_fields;
 865                         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 866                                                VMXNET3_CMD_SET_RSS_FIELDS);
 867
 868                         /* Not all requested RSS may get applied, so get and
 869                          * cache what was actually applied.
 870                          */
 871                         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 872                                                VMXNET3_CMD_GET_RSS_FIELDS);
 873                         adapter->rss_fields =
 874                                 VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
 875                         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 876                 } else {
 877                         /* When the device is activated, we will try to apply
 878                          * these rules and cache the applied value later.
 879                          */
 880                         adapter->rss_fields = rss_fields;
 881                 }
 882         }
 883         return 0;
 884 }
 885
 886 static int
 887 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
 888                   u32 *rules)
 889 {
 890         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 891         int err = 0;
 892
 893         switch (info->cmd) {
 894         case ETHTOOL_GRXRINGS:
 895                 info->data = adapter->num_rx_queues;
 896                 break;
 897         case ETHTOOL_GRXFH:
 898                 if (!VMXNET3_VERSION_GE_4(adapter)) {
 899                         err = -EOPNOTSUPP;
 900                         break;
 901                 }
 902 #ifdef VMXNET3_RSS
 903                 if (!adapter->rss) {
 904                         err = -EOPNOTSUPP;
 905                         break;
 906                 }
 907 #endif
 908                 err = vmxnet3_get_rss_hash_opts(adapter, info);
 909                 break;
 910         default:
 911                 err = -EOPNOTSUPP;
 912                 break;
 913         }
 914
 915         return err;
 916 }
 917
 918 static int
 919 vmxnet3_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
 920 {
 921         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 922         int err = 0;
 923
 924         if (!VMXNET3_VERSION_GE_4(adapter)) {
 925                 err = -EOPNOTSUPP;
 926                 goto done;
 927         }
 928 #ifdef VMXNET3_RSS
 929         if (!adapter->rss) {
 930                 err = -EOPNOTSUPP;
 931                 goto done;
 932         }
 933 #endif
 934
 935         switch (info->cmd) {
 936         case ETHTOOL_SRXFH:
 937                 err = vmxnet3_set_rss_hash_opt(netdev, adapter, info);
 938                 break;
 939         default:
 940                 err = -EOPNOTSUPP;
 941                 break;
 942         }
 943
 944 done:
 945         return err;
 946 }
 947
 948 #ifdef VMXNET3_RSS
 949 static u32
 950 vmxnet3_get_rss_indir_size(struct net_device *netdev)
 951 {
 952         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 953         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 954
 955         return rssConf->indTableSize;
 956 }
 957
 958 static int
 959 vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
 960 {
 961         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 962         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 963         unsigned int n = rssConf->indTableSize;
 964
 965         if (hfunc)
 966                 *hfunc = ETH_RSS_HASH_TOP;
 967         if (!p)
 968                 return 0;
 969         if (n > UPT1_RSS_MAX_IND_TABLE_SIZE)
 970                 return 0;
 971         while (n--)
 972                 p[n] = rssConf->indTable[n];
 973         return 0;
 974
 975 }
 976
 977 static int
 978 vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
 979                 const u8 hfunc)
 980 {
 981         unsigned int i;
 982         unsigned long flags;
 983         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
 984         struct UPT1_RSSConf *rssConf = adapter->rss_conf;
 985
 986         /* We do not allow change in unsupported parameters */
 987         if (key ||
 988             (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
 989                 return -EOPNOTSUPP;
 990         if (!p)
 991                 return 0;
 992         for (i = 0; i < rssConf->indTableSize; i++)
 993                 rssConf->indTable[i] = p[i];
 994
 995         spin_lock_irqsave(&adapter->cmd_lock, flags);
 996         VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
 997                                VMXNET3_CMD_UPDATE_RSSIDT);
 998         spin_unlock_irqrestore(&adapter->cmd_lock, flags);
 999
1000         return 0;
1001
1002 }
1003 #endif
1004
1005 static int
1006 vmxnet3_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
1007 {
1008         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1009
1010         if (!VMXNET3_VERSION_GE_3(adapter))
1011                 return -EOPNOTSUPP;
1012
1013         switch (adapter->coal_conf->coalMode) {
1014         case VMXNET3_COALESCE_DISABLED:
1015                 /* struct ethtool_coalesce is already initialized to 0 */
1016                 break;
1017         case VMXNET3_COALESCE_ADAPT:
1018                 ec->use_adaptive_rx_coalesce = true;
1019                 break;
1020         case VMXNET3_COALESCE_STATIC:
1021                 ec->tx_max_coalesced_frames =
1022                         adapter->coal_conf->coalPara.coalStatic.tx_comp_depth;
1023                 ec->rx_max_coalesced_frames =
1024                         adapter->coal_conf->coalPara.coalStatic.rx_depth;
1025                 break;
1026         case VMXNET3_COALESCE_RBC: {
1027                 u32 rbc_rate;
1028
1029                 rbc_rate = adapter->coal_conf->coalPara.coalRbc.rbc_rate;
1030                 ec->rx_coalesce_usecs = VMXNET3_COAL_RBC_USECS(rbc_rate);
1031         }
1032                 break;
1033         default:
1034                 return -EOPNOTSUPP;
1035         }
1036
1037         return 0;
1038 }
1039
1040 static int
1041 vmxnet3_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
1042 {
1043         struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1044         struct Vmxnet3_DriverShared *shared = adapter->shared;
1045         union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
1046         unsigned long flags;
1047
1048         if (!VMXNET3_VERSION_GE_3(adapter))
1049                 return -EOPNOTSUPP;
1050
1051         if ((ec->rx_coalesce_usecs == 0) &&
1052             (ec->use_adaptive_rx_coalesce == 0) &&
1053             (ec->tx_max_coalesced_frames == 0) &&
1054             (ec->rx_max_coalesced_frames == 0)) {
1055                 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1056                 adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
1057                 goto done;
1058         }
1059
1060         if (ec->rx_coalesce_usecs != 0) {
1061                 u32 rbc_rate;
1062
1063                 if ((ec->use_adaptive_rx_coalesce != 0) ||
1064                     (ec->tx_max_coalesced_frames != 0) ||
1065                     (ec->rx_max_coalesced_frames != 0)) {
1066                         return -EINVAL;
1067                 }
1068
1069                 rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
1070                 if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
1071                     rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
1072                         return -EINVAL;
1073                 }
1074
1075                 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1076                 adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
1077                 adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
1078                 goto done;
1079         }
1080
1081         if (ec->use_adaptive_rx_coalesce != 0) {
1082                 if ((ec->rx_coalesce_usecs != 0) ||
1083                     (ec->tx_max_coalesced_frames != 0) ||
1084                     (ec->rx_max_coalesced_frames != 0)) {
1085                         return -EINVAL;
1086                 }
1087                 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1088                 adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
1089                 goto done;
1090         }
1091
1092         if ((ec->tx_max_coalesced_frames != 0) ||
1093             (ec->rx_max_coalesced_frames != 0)) {
1094                 if ((ec->rx_coalesce_usecs != 0) ||
1095                     (ec->use_adaptive_rx_coalesce != 0)) {
1096                         return -EINVAL;
1097                 }
1098
1099                 if ((ec->tx_max_coalesced_frames >
1100                     VMXNET3_COAL_STATIC_MAX_DEPTH) ||
1101                     (ec->rx_max_coalesced_frames >
1102                      VMXNET3_COAL_STATIC_MAX_DEPTH)) {
1103                         return -EINVAL;
1104                 }
1105
1106                 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1107                 adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
1108
1109                 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
1110                         (ec->tx_max_coalesced_frames ?
1111                          ec->tx_max_coalesced_frames :
1112                          VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
1113
1114                 adapter->coal_conf->coalPara.coalStatic.rx_depth =
1115                         (ec->rx_max_coalesced_frames ?
1116                          ec->rx_max_coalesced_frames :
1117                          VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
1118
1119                 adapter->coal_conf->coalPara.coalStatic.tx_depth =
1120                          VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
1121                 goto done;
1122         }
1123
1124 done:
1125         adapter->default_coal_mode = false;
1126         if (netif_running(netdev)) {
1127                 spin_lock_irqsave(&adapter->cmd_lock, flags);
1128                 cmdInfo->varConf.confVer = 1;
1129                 cmdInfo->varConf.confLen =
1130                         cpu_to_le32(sizeof(*adapter->coal_conf));
1131                 cmdInfo->varConf.confPA  = cpu_to_le64(adapter->coal_conf_pa);
1132                 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1133                                        VMXNET3_CMD_SET_COALESCE);
1134                 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1135         }
1136
1137         return 0;
1138 }
1139
1140 static const struct ethtool_ops vmxnet3_ethtool_ops = {
1141         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
1142                                      ETHTOOL_COALESCE_MAX_FRAMES |
1143                                      ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
1144         .get_drvinfo       = vmxnet3_get_drvinfo,
1145         .get_regs_len      = vmxnet3_get_regs_len,
1146         .get_regs          = vmxnet3_get_regs,
1147         .get_wol           = vmxnet3_get_wol,
1148         .set_wol           = vmxnet3_set_wol,
1149         .get_link          = ethtool_op_get_link,
1150         .get_coalesce      = vmxnet3_get_coalesce,
1151         .set_coalesce      = vmxnet3_set_coalesce,
1152         .get_strings       = vmxnet3_get_strings,
1153         .get_sset_count    = vmxnet3_get_sset_count,
1154         .get_ethtool_stats = vmxnet3_get_ethtool_stats,
1155         .get_ringparam     = vmxnet3_get_ringparam,
1156         .set_ringparam     = vmxnet3_set_ringparam,
1157         .get_rxnfc         = vmxnet3_get_rxnfc,
1158         .set_rxnfc         = vmxnet3_set_rxnfc,
1159 #ifdef VMXNET3_RSS
1160         .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
1161         .get_rxfh          = vmxnet3_get_rss,
1162         .set_rxfh          = vmxnet3_set_rss,
1163 #endif
1164         .get_link_ksettings = vmxnet3_get_link_ksettings,
1165 };
1166
1167 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
1168 {
1169         netdev->ethtool_ops = &vmxnet3_ethtool_ops;
1170 }