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vmxnet3_ethtool.c
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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 <[email protected]>
24  *
25  */
26 
27 
28 #include "vmxnet3_int.h"
29 
30 struct vmxnet3_stat_desc {
31  char desc[ETH_GSTRING_LEN];
32  int offset;
33 };
34 
35 
36 /* per tq stats maintained by the device */
37 static const struct vmxnet3_stat_desc
38 vmxnet3_tq_dev_stats[] = {
39  /* description, offset */
40  { "Tx Queue#", 0 },
41  { " TSO pkts tx", offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
42  { " TSO bytes tx", offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
43  { " ucast pkts tx", offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
44  { " ucast bytes tx", offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
45  { " mcast pkts tx", offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
46  { " mcast bytes tx", offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
47  { " bcast pkts tx", offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
48  { " bcast bytes tx", offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
49  { " pkts tx err", offsetof(struct UPT1_TxStats, pktsTxError) },
50  { " pkts tx discard", offsetof(struct UPT1_TxStats, pktsTxDiscard) },
51 };
52 
53 /* per tq stats maintained by the driver */
54 static const struct vmxnet3_stat_desc
55 vmxnet3_tq_driver_stats[] = {
56  /* description, offset */
57  {" drv dropped tx total", offsetof(struct vmxnet3_tq_driver_stats,
58  drop_total) },
59  { " too many frags", offsetof(struct vmxnet3_tq_driver_stats,
60  drop_too_many_frags) },
61  { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
62  drop_oversized_hdr) },
63  { " hdr err", offsetof(struct vmxnet3_tq_driver_stats,
64  drop_hdr_inspect_err) },
65  { " tso", offsetof(struct vmxnet3_tq_driver_stats,
66  drop_tso) },
67  { " ring full", offsetof(struct vmxnet3_tq_driver_stats,
68  tx_ring_full) },
69  { " pkts linearized", offsetof(struct vmxnet3_tq_driver_stats,
70  linearized) },
71  { " hdr cloned", offsetof(struct vmxnet3_tq_driver_stats,
72  copy_skb_header) },
73  { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
74  oversized_hdr) },
75 };
76 
77 /* per rq stats maintained by the device */
78 static const struct vmxnet3_stat_desc
79 vmxnet3_rq_dev_stats[] = {
80  { "Rx Queue#", 0 },
81  { " LRO pkts rx", offsetof(struct UPT1_RxStats, LROPktsRxOK) },
82  { " LRO byte rx", offsetof(struct UPT1_RxStats, LROBytesRxOK) },
83  { " ucast pkts rx", offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
84  { " ucast bytes rx", offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
85  { " mcast pkts rx", offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
86  { " mcast bytes rx", offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
87  { " bcast pkts rx", offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
88  { " bcast bytes rx", offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
89  { " pkts rx OOB", offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
90  { " pkts rx err", offsetof(struct UPT1_RxStats, pktsRxError) },
91 };
92 
93 /* per rq stats maintained by the driver */
94 static const struct vmxnet3_stat_desc
95 vmxnet3_rq_driver_stats[] = {
96  /* description, offset */
97  { " drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
98  drop_total) },
99  { " err", offsetof(struct vmxnet3_rq_driver_stats,
100  drop_err) },
101  { " fcs", offsetof(struct vmxnet3_rq_driver_stats,
102  drop_fcs) },
103  { " rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
104  rx_buf_alloc_failure) },
105 };
106 
107 /* gloabl stats maintained by the driver */
108 static const struct vmxnet3_stat_desc
109 vmxnet3_global_stats[] = {
110  /* description, offset */
111  { "tx timeout count", offsetof(struct vmxnet3_adapter,
112  tx_timeout_count) }
113 };
114 
115 
116 struct rtnl_link_stats64 *
117 vmxnet3_get_stats64(struct net_device *netdev,
118  struct rtnl_link_stats64 *stats)
119 {
120  struct vmxnet3_adapter *adapter;
121  struct vmxnet3_tq_driver_stats *drvTxStats;
122  struct vmxnet3_rq_driver_stats *drvRxStats;
123  struct UPT1_TxStats *devTxStats;
124  struct UPT1_RxStats *devRxStats;
125  unsigned long flags;
126  int i;
127 
128  adapter = netdev_priv(netdev);
129 
130  /* Collect the dev stats into the shared area */
131  spin_lock_irqsave(&adapter->cmd_lock, flags);
132  VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
133  spin_unlock_irqrestore(&adapter->cmd_lock, flags);
134 
135  for (i = 0; i < adapter->num_tx_queues; i++) {
136  devTxStats = &adapter->tqd_start[i].stats;
137  drvTxStats = &adapter->tx_queue[i].stats;
138  stats->tx_packets += devTxStats->ucastPktsTxOK +
139  devTxStats->mcastPktsTxOK +
140  devTxStats->bcastPktsTxOK;
141  stats->tx_bytes += devTxStats->ucastBytesTxOK +
142  devTxStats->mcastBytesTxOK +
143  devTxStats->bcastBytesTxOK;
144  stats->tx_errors += devTxStats->pktsTxError;
145  stats->tx_dropped += drvTxStats->drop_total;
146  }
147 
148  for (i = 0; i < adapter->num_rx_queues; i++) {
149  devRxStats = &adapter->rqd_start[i].stats;
150  drvRxStats = &adapter->rx_queue[i].stats;
151  stats->rx_packets += devRxStats->ucastPktsRxOK +
152  devRxStats->mcastPktsRxOK +
153  devRxStats->bcastPktsRxOK;
154 
155  stats->rx_bytes += devRxStats->ucastBytesRxOK +
156  devRxStats->mcastBytesRxOK +
157  devRxStats->bcastBytesRxOK;
158 
159  stats->rx_errors += devRxStats->pktsRxError;
160  stats->rx_dropped += drvRxStats->drop_total;
161  stats->multicast += devRxStats->mcastPktsRxOK;
162  }
163 
164  return stats;
165 }
166 
167 static int
168 vmxnet3_get_sset_count(struct net_device *netdev, int sset)
169 {
170  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
171  switch (sset) {
172  case ETH_SS_STATS:
173  return (ARRAY_SIZE(vmxnet3_tq_dev_stats) +
174  ARRAY_SIZE(vmxnet3_tq_driver_stats)) *
175  adapter->num_tx_queues +
176  (ARRAY_SIZE(vmxnet3_rq_dev_stats) +
177  ARRAY_SIZE(vmxnet3_rq_driver_stats)) *
178  adapter->num_rx_queues +
179  ARRAY_SIZE(vmxnet3_global_stats);
180  default:
181  return -EOPNOTSUPP;
182  }
183 }
184 
185 
186 /* Should be multiple of 4 */
187 #define NUM_TX_REGS 8
188 #define NUM_RX_REGS 12
189 
190 static int
191 vmxnet3_get_regs_len(struct net_device *netdev)
192 {
193  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
194  return (adapter->num_tx_queues * NUM_TX_REGS * sizeof(u32) +
195  adapter->num_rx_queues * NUM_RX_REGS * sizeof(u32));
196 }
197 
198 
199 static void
200 vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
201 {
202  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
203 
204  strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
205 
206  strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
207  sizeof(drvinfo->version));
208 
209  strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
210  ETHTOOL_BUSINFO_LEN);
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 | NETIF_F_HW_VLAN_RX)) {
267  if (features & NETIF_F_RXCSUM)
268  adapter->shared->devRead.misc.uptFeatures |=
269  UPT1_F_RXCSUM;
270  else
271  adapter->shared->devRead.misc.uptFeatures &=
272  ~UPT1_F_RXCSUM;
273 
274  /* update harware LRO capability accordingly */
275  if (features & NETIF_F_LRO)
276  adapter->shared->devRead.misc.uptFeatures |=
277  UPT1_F_LRO;
278  else
279  adapter->shared->devRead.misc.uptFeatures &=
280  ~UPT1_F_LRO;
281 
282  if (features & NETIF_F_HW_VLAN_RX)
283  adapter->shared->devRead.misc.uptFeatures |=
284  UPT1_F_RXVLAN;
285  else
286  adapter->shared->devRead.misc.uptFeatures &=
287  ~UPT1_F_RXVLAN;
288 
289  spin_lock_irqsave(&adapter->cmd_lock, flags);
290  VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
291  VMXNET3_CMD_UPDATE_FEATURE);
292  spin_unlock_irqrestore(&adapter->cmd_lock, flags);
293  }
294  return 0;
295 }
296 
297 static void
298 vmxnet3_get_ethtool_stats(struct net_device *netdev,
299  struct ethtool_stats *stats, u64 *buf)
300 {
301  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
302  unsigned long flags;
303  u8 *base;
304  int i;
305  int j = 0;
306 
307  spin_lock_irqsave(&adapter->cmd_lock, flags);
308  VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
309  spin_unlock_irqrestore(&adapter->cmd_lock, flags);
310 
311  /* this does assume each counter is 64-bit wide */
312  for (j = 0; j < adapter->num_tx_queues; j++) {
313  base = (u8 *)&adapter->tqd_start[j].stats;
314  *buf++ = (u64)j;
315  for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
316  *buf++ = *(u64 *)(base +
317  vmxnet3_tq_dev_stats[i].offset);
318 
319  base = (u8 *)&adapter->tx_queue[j].stats;
320  for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
321  *buf++ = *(u64 *)(base +
322  vmxnet3_tq_driver_stats[i].offset);
323  }
324 
325  for (j = 0; j < adapter->num_tx_queues; j++) {
326  base = (u8 *)&adapter->rqd_start[j].stats;
327  *buf++ = (u64) j;
328  for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
329  *buf++ = *(u64 *)(base +
330  vmxnet3_rq_dev_stats[i].offset);
331 
332  base = (u8 *)&adapter->rx_queue[j].stats;
333  for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
334  *buf++ = *(u64 *)(base +
335  vmxnet3_rq_driver_stats[i].offset);
336  }
337 
338  base = (u8 *)adapter;
339  for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
340  *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
341 }
342 
343 
344 static void
345 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
346 {
347  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
348  u32 *buf = p;
349  int i = 0, j = 0;
350 
351  memset(p, 0, vmxnet3_get_regs_len(netdev));
352 
353  regs->version = 1;
354 
355  /* Update vmxnet3_get_regs_len if we want to dump more registers */
356 
357  /* make each ring use multiple of 16 bytes */
358  for (i = 0; i < adapter->num_tx_queues; i++) {
359  buf[j++] = adapter->tx_queue[i].tx_ring.next2fill;
360  buf[j++] = adapter->tx_queue[i].tx_ring.next2comp;
361  buf[j++] = adapter->tx_queue[i].tx_ring.gen;
362  buf[j++] = 0;
363 
364  buf[j++] = adapter->tx_queue[i].comp_ring.next2proc;
365  buf[j++] = adapter->tx_queue[i].comp_ring.gen;
366  buf[j++] = adapter->tx_queue[i].stopped;
367  buf[j++] = 0;
368  }
369 
370  for (i = 0; i < adapter->num_rx_queues; i++) {
371  buf[j++] = adapter->rx_queue[i].rx_ring[0].next2fill;
372  buf[j++] = adapter->rx_queue[i].rx_ring[0].next2comp;
373  buf[j++] = adapter->rx_queue[i].rx_ring[0].gen;
374  buf[j++] = 0;
375 
376  buf[j++] = adapter->rx_queue[i].rx_ring[1].next2fill;
377  buf[j++] = adapter->rx_queue[i].rx_ring[1].next2comp;
378  buf[j++] = adapter->rx_queue[i].rx_ring[1].gen;
379  buf[j++] = 0;
380 
381  buf[j++] = adapter->rx_queue[i].comp_ring.next2proc;
382  buf[j++] = adapter->rx_queue[i].comp_ring.gen;
383  buf[j++] = 0;
384  buf[j++] = 0;
385  }
386 
387 }
388 
389 
390 static void
391 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
392 {
393  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
394 
395  wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
396  wol->wolopts = adapter->wol;
397 }
398 
399 
400 static int
401 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
402 {
403  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
404 
405  if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
406  WAKE_MAGICSECURE)) {
407  return -EOPNOTSUPP;
408  }
409 
410  adapter->wol = wol->wolopts;
411 
412  device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
413 
414  return 0;
415 }
416 
417 
418 static int
419 vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
420 {
421  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
422 
423  ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
424  SUPPORTED_TP;
425  ecmd->advertising = ADVERTISED_TP;
426  ecmd->port = PORT_TP;
427  ecmd->transceiver = XCVR_INTERNAL;
428 
429  if (adapter->link_speed) {
430  ethtool_cmd_speed_set(ecmd, adapter->link_speed);
431  ecmd->duplex = DUPLEX_FULL;
432  } else {
433  ethtool_cmd_speed_set(ecmd, -1);
434  ecmd->duplex = -1;
435  }
436  return 0;
437 }
438 
439 
440 static void
441 vmxnet3_get_ringparam(struct net_device *netdev,
442  struct ethtool_ringparam *param)
443 {
444  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
445 
446  param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
447  param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
448  param->rx_mini_max_pending = 0;
449  param->rx_jumbo_max_pending = 0;
450 
451  param->rx_pending = adapter->rx_queue[0].rx_ring[0].size *
452  adapter->num_rx_queues;
453  param->tx_pending = adapter->tx_queue[0].tx_ring.size *
454  adapter->num_tx_queues;
455  param->rx_mini_pending = 0;
456  param->rx_jumbo_pending = 0;
457 }
458 
459 
460 static int
461 vmxnet3_set_ringparam(struct net_device *netdev,
462  struct ethtool_ringparam *param)
463 {
464  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
465  u32 new_tx_ring_size, new_rx_ring_size;
466  u32 sz;
467  int err = 0;
468 
469  if (param->tx_pending == 0 || param->tx_pending >
470  VMXNET3_TX_RING_MAX_SIZE)
471  return -EINVAL;
472 
473  if (param->rx_pending == 0 || param->rx_pending >
474  VMXNET3_RX_RING_MAX_SIZE)
475  return -EINVAL;
476 
477 
478  /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
479  new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
480  ~VMXNET3_RING_SIZE_MASK;
481  new_tx_ring_size = min_t(u32, new_tx_ring_size,
482  VMXNET3_TX_RING_MAX_SIZE);
483  if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
484  VMXNET3_RING_SIZE_ALIGN) != 0)
485  return -EINVAL;
486 
487  /* ring0 has to be a multiple of
488  * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
489  */
490  sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
491  new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
492  new_rx_ring_size = min_t(u32, new_rx_ring_size,
493  VMXNET3_RX_RING_MAX_SIZE / sz * sz);
494  if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
495  sz) != 0)
496  return -EINVAL;
497 
498  if (new_tx_ring_size == adapter->tx_queue[0].tx_ring.size &&
499  new_rx_ring_size == adapter->rx_queue[0].rx_ring[0].size) {
500  return 0;
501  }
502 
503  /*
504  * Reset_work may be in the middle of resetting the device, wait for its
505  * completion.
506  */
507  while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
508  msleep(1);
509 
510  if (netif_running(netdev)) {
511  vmxnet3_quiesce_dev(adapter);
512  vmxnet3_reset_dev(adapter);
513 
514  /* recreate the rx queue and the tx queue based on the
515  * new sizes */
516  vmxnet3_tq_destroy_all(adapter);
517  vmxnet3_rq_destroy_all(adapter);
518 
519  err = vmxnet3_create_queues(adapter, new_tx_ring_size,
520  new_rx_ring_size, VMXNET3_DEF_RX_RING_SIZE);
521 
522  if (err) {
523  /* failed, most likely because of OOM, try default
524  * size */
525  printk(KERN_ERR "%s: failed to apply new sizes, try the"
526  " default ones\n", netdev->name);
527  err = vmxnet3_create_queues(adapter,
528  VMXNET3_DEF_TX_RING_SIZE,
529  VMXNET3_DEF_RX_RING_SIZE,
530  VMXNET3_DEF_RX_RING_SIZE);
531  if (err) {
532  printk(KERN_ERR "%s: failed to create queues "
533  "with default sizes. Closing it\n",
534  netdev->name);
535  goto out;
536  }
537  }
538 
539  err = vmxnet3_activate_dev(adapter);
540  if (err)
541  printk(KERN_ERR "%s: failed to re-activate, error %d."
542  " Closing it\n", netdev->name, err);
543  }
544 
545 out:
546  clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
547  if (err)
548  vmxnet3_force_close(adapter);
549 
550  return err;
551 }
552 
553 
554 static int
555 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
556  u32 *rules)
557 {
558  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
559  switch (info->cmd) {
560  case ETHTOOL_GRXRINGS:
561  info->data = adapter->num_rx_queues;
562  return 0;
563  }
564  return -EOPNOTSUPP;
565 }
566 
567 #ifdef VMXNET3_RSS
568 static u32
569 vmxnet3_get_rss_indir_size(struct net_device *netdev)
570 {
571  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
572  struct UPT1_RSSConf *rssConf = adapter->rss_conf;
573 
574  return rssConf->indTableSize;
575 }
576 
577 static int
578 vmxnet3_get_rss_indir(struct net_device *netdev, u32 *p)
579 {
580  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
581  struct UPT1_RSSConf *rssConf = adapter->rss_conf;
582  unsigned int n = rssConf->indTableSize;
583 
584  while (n--)
585  p[n] = rssConf->indTable[n];
586  return 0;
587 
588 }
589 
590 static int
591 vmxnet3_set_rss_indir(struct net_device *netdev, const u32 *p)
592 {
593  unsigned int i;
594  unsigned long flags;
595  struct vmxnet3_adapter *adapter = netdev_priv(netdev);
596  struct UPT1_RSSConf *rssConf = adapter->rss_conf;
597 
598  for (i = 0; i < rssConf->indTableSize; i++)
599  rssConf->indTable[i] = p[i];
600 
601  spin_lock_irqsave(&adapter->cmd_lock, flags);
602  VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
603  VMXNET3_CMD_UPDATE_RSSIDT);
604  spin_unlock_irqrestore(&adapter->cmd_lock, flags);
605 
606  return 0;
607 
608 }
609 #endif
610 
611 static const struct ethtool_ops vmxnet3_ethtool_ops = {
612  .get_settings = vmxnet3_get_settings,
613  .get_drvinfo = vmxnet3_get_drvinfo,
614  .get_regs_len = vmxnet3_get_regs_len,
615  .get_regs = vmxnet3_get_regs,
616  .get_wol = vmxnet3_get_wol,
617  .set_wol = vmxnet3_set_wol,
618  .get_link = ethtool_op_get_link,
619  .get_strings = vmxnet3_get_strings,
620  .get_sset_count = vmxnet3_get_sset_count,
621  .get_ethtool_stats = vmxnet3_get_ethtool_stats,
622  .get_ringparam = vmxnet3_get_ringparam,
623  .set_ringparam = vmxnet3_set_ringparam,
624  .get_rxnfc = vmxnet3_get_rxnfc,
625 #ifdef VMXNET3_RSS
626  .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
627  .get_rxfh_indir = vmxnet3_get_rss_indir,
628  .set_rxfh_indir = vmxnet3_set_rss_indir,
629 #endif
630 };
631 
632 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
633 {
634  SET_ETHTOOL_OPS(netdev, &vmxnet3_ethtool_ops);
635 }
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