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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / net / vmxnet3 / vmxnet3_ethtool.c
blob2ff27314e04739034cef408b59aed6a77cd98911
1 /*
2 * Linux driver for VMware's vmxnet3 ethernet NIC.
3 *
4 * Copyright (C) 2008-2016, 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 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 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
346 * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
347 * Therefore, if any registers are added, removed or modified, then a version
348 * bump and a corresponding change in the vmxnet3 support for ethtool(8)
349 * --register-dump would be required.
350 */
351 static void
352 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
353 {
354 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
355 u32 *buf = p;
356 int i = 0, j = 0;
357
358 memset(p, 0, vmxnet3_get_regs_len(netdev));
359
360 regs->version = 2;
361
362 /* Update vmxnet3_get_regs_len if we want to dump more registers */
363
364 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
365 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
366 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAL);
367 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAH);
368 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
369 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
370 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
371 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
372 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ECR);
373
374 buf[j++] = adapter->intr.num_intrs;
375 for (i = 0; i < adapter->intr.num_intrs; i++) {
376 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_IMR
377 + i * VMXNET3_REG_ALIGN);
378 }
379
380 buf[j++] = adapter->num_tx_queues;
381 for (i = 0; i < adapter->num_tx_queues; i++) {
382 struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i];
383
384 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_TXPROD +
385 i * VMXNET3_REG_ALIGN);
386
387 buf[j++] = VMXNET3_GET_ADDR_LO(tq->tx_ring.basePA);
388 buf[j++] = VMXNET3_GET_ADDR_HI(tq->tx_ring.basePA);
389 buf[j++] = tq->tx_ring.size;
390 buf[j++] = tq->tx_ring.next2fill;
391 buf[j++] = tq->tx_ring.next2comp;
392 buf[j++] = tq->tx_ring.gen;
393
394 buf[j++] = VMXNET3_GET_ADDR_LO(tq->data_ring.basePA);
395 buf[j++] = VMXNET3_GET_ADDR_HI(tq->data_ring.basePA);
396 buf[j++] = tq->data_ring.size;
397 buf[j++] = tq->txdata_desc_size;
398
399 buf[j++] = VMXNET3_GET_ADDR_LO(tq->comp_ring.basePA);
400 buf[j++] = VMXNET3_GET_ADDR_HI(tq->comp_ring.basePA);
401 buf[j++] = tq->comp_ring.size;
402 buf[j++] = tq->comp_ring.next2proc;
403 buf[j++] = tq->comp_ring.gen;
404
405 buf[j++] = tq->stopped;
406 }
407
408 buf[j++] = adapter->num_rx_queues;
409 for (i = 0; i < adapter->num_rx_queues; i++) {
410 struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
411
412 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD +
413 i * VMXNET3_REG_ALIGN);
414 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD2 +
415 i * VMXNET3_REG_ALIGN);
416
417 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[0].basePA);
418 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[0].basePA);
419 buf[j++] = rq->rx_ring[0].size;
420 buf[j++] = rq->rx_ring[0].next2fill;
421 buf[j++] = rq->rx_ring[0].next2comp;
422 buf[j++] = rq->rx_ring[0].gen;
423
424 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[1].basePA);
425 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[1].basePA);
426 buf[j++] = rq->rx_ring[1].size;
427 buf[j++] = rq->rx_ring[1].next2fill;
428 buf[j++] = rq->rx_ring[1].next2comp;
429 buf[j++] = rq->rx_ring[1].gen;
430
431 buf[j++] = VMXNET3_GET_ADDR_LO(rq->data_ring.basePA);
432 buf[j++] = VMXNET3_GET_ADDR_HI(rq->data_ring.basePA);
433 buf[j++] = rq->rx_ring[0].size;
434 buf[j++] = rq->data_ring.desc_size;
435
436 buf[j++] = VMXNET3_GET_ADDR_LO(rq->comp_ring.basePA);
437 buf[j++] = VMXNET3_GET_ADDR_HI(rq->comp_ring.basePA);
438 buf[j++] = rq->comp_ring.size;
439 buf[j++] = rq->comp_ring.next2proc;
440 buf[j++] = rq->comp_ring.gen;
441 }
442 }
443
444
445 static void
446 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
447 {
448 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
449
450 wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
451 wol->wolopts = adapter->wol;
452 }
453
454
455 static int
456 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
457 {
458 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
459
460 if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
461 WAKE_MAGICSECURE)) {
462 return -EOPNOTSUPP;
463 }
464
465 adapter->wol = wol->wolopts;
466
467 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
468
469 return 0;
470 }
471
472
473 static int
474 vmxnet3_get_link_ksettings(struct net_device *netdev,
475 struct ethtool_link_ksettings *ecmd)
476 {
477 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
478
479 ethtool_link_ksettings_zero_link_mode(ecmd, supported);
480 ethtool_link_ksettings_add_link_mode(ecmd, supported, 10000baseT_Full);
481 ethtool_link_ksettings_add_link_mode(ecmd, supported, 1000baseT_Full);
482 ethtool_link_ksettings_add_link_mode(ecmd, supported, TP);
483 ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
484 ethtool_link_ksettings_add_link_mode(ecmd, advertising, TP);
485 ecmd->base.port = PORT_TP;
486
487 if (adapter->link_speed) {
488 ecmd->base.speed = adapter->link_speed;
489 ecmd->base.duplex = DUPLEX_FULL;
490 } else {
491 ecmd->base.speed = SPEED_UNKNOWN;
492 ecmd->base.duplex = DUPLEX_UNKNOWN;
493 }
494 return 0;
495 }
496
497
498 static void
499 vmxnet3_get_ringparam(struct net_device *netdev,
500 struct ethtool_ringparam *param)
501 {
502 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
503
504 param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
505 param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
506 param->rx_mini_max_pending = VMXNET3_VERSION_GE_3(adapter) ?
507 VMXNET3_RXDATA_DESC_MAX_SIZE : 0;
508 param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
509
510 param->rx_pending = adapter->rx_ring_size;
511 param->tx_pending = adapter->tx_ring_size;
512 param->rx_mini_pending = VMXNET3_VERSION_GE_3(adapter) ?
513 adapter->rxdata_desc_size : 0;
514 param->rx_jumbo_pending = adapter->rx_ring2_size;
515 }
516
517
518 static int
519 vmxnet3_set_ringparam(struct net_device *netdev,
520 struct ethtool_ringparam *param)
521 {
522 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
523 u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
524 u16 new_rxdata_desc_size;
525 u32 sz;
526 int err = 0;
527
528 if (param->tx_pending == 0 || param->tx_pending >
529 VMXNET3_TX_RING_MAX_SIZE)
530 return -EINVAL;
531
532 if (param->rx_pending == 0 || param->rx_pending >
533 VMXNET3_RX_RING_MAX_SIZE)
534 return -EINVAL;
535
536 if (param->rx_jumbo_pending == 0 ||
537 param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
538 return -EINVAL;
539
540 /* if adapter not yet initialized, do nothing */
541 if (adapter->rx_buf_per_pkt == 0) {
542 netdev_err(netdev, "adapter not completely initialized, "
543 "ring size cannot be changed yet\n");
544 return -EOPNOTSUPP;
545 }
546
547 if (VMXNET3_VERSION_GE_3(adapter)) {
548 if (param->rx_mini_pending < 0 ||
549 param->rx_mini_pending > VMXNET3_RXDATA_DESC_MAX_SIZE) {
550 return -EINVAL;
551 }
552 } else if (param->rx_mini_pending != 0) {
553 return -EINVAL;
554 }
555
556 /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
557 new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
558 ~VMXNET3_RING_SIZE_MASK;
559 new_tx_ring_size = min_t(u32, new_tx_ring_size,
560 VMXNET3_TX_RING_MAX_SIZE);
561 if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
562 VMXNET3_RING_SIZE_ALIGN) != 0)
563 return -EINVAL;
564
565 /* ring0 has to be a multiple of
566 * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
567 */
568 sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
569 new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
570 new_rx_ring_size = min_t(u32, new_rx_ring_size,
571 VMXNET3_RX_RING_MAX_SIZE / sz * sz);
572 if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
573 sz) != 0)
574 return -EINVAL;
575
576 /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
577 new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
578 ~VMXNET3_RING_SIZE_MASK;
579 new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
580 VMXNET3_RX_RING2_MAX_SIZE);
581
582 /* rx data ring buffer size has to be a multiple of
583 * VMXNET3_RXDATA_DESC_SIZE_ALIGN
584 */
585 new_rxdata_desc_size =
586 (param->rx_mini_pending + VMXNET3_RXDATA_DESC_SIZE_MASK) &
587 ~VMXNET3_RXDATA_DESC_SIZE_MASK;
588 new_rxdata_desc_size = min_t(u16, new_rxdata_desc_size,
589 VMXNET3_RXDATA_DESC_MAX_SIZE);
590
591 if (new_tx_ring_size == adapter->tx_ring_size &&
592 new_rx_ring_size == adapter->rx_ring_size &&
593 new_rx_ring2_size == adapter->rx_ring2_size &&
594 new_rxdata_desc_size == adapter->rxdata_desc_size) {
595 return 0;
596 }
597
598 /*
599 * Reset_work may be in the middle of resetting the device, wait for its
600 * completion.
601 */
602 while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
603 msleep(1);
604
605 if (netif_running(netdev)) {
606 vmxnet3_quiesce_dev(adapter);
607 vmxnet3_reset_dev(adapter);
608
609 /* recreate the rx queue and the tx queue based on the
610 * new sizes */
611 vmxnet3_tq_destroy_all(adapter);
612 vmxnet3_rq_destroy_all(adapter);
613
614 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
615 new_rx_ring_size, new_rx_ring2_size,
616 adapter->txdata_desc_size,
617 new_rxdata_desc_size);
618 if (err) {
619 /* failed, most likely because of OOM, try default
620 * size */
621 netdev_err(netdev, "failed to apply new sizes, "
622 "try the default ones\n");
623 new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
624 new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
625 new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
626 new_rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
627 VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
628
629 err = vmxnet3_create_queues(adapter,
630 new_tx_ring_size,
631 new_rx_ring_size,
632 new_rx_ring2_size,
633 adapter->txdata_desc_size,
634 new_rxdata_desc_size);
635 if (err) {
636 netdev_err(netdev, "failed to create queues "
637 "with default sizes. Closing it\n");
638 goto out;
639 }
640 }
641
642 err = vmxnet3_activate_dev(adapter);
643 if (err)
644 netdev_err(netdev, "failed to re-activate, error %d."
645 " Closing it\n", err);
646 }
647 adapter->tx_ring_size = new_tx_ring_size;
648 adapter->rx_ring_size = new_rx_ring_size;
649 adapter->rx_ring2_size = new_rx_ring2_size;
650 adapter->rxdata_desc_size = new_rxdata_desc_size;
651
652 out:
653 clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
654 if (err)
655 vmxnet3_force_close(adapter);
656
657 return err;
658 }
659
660
661 static int
662 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
663 u32 *rules)
664 {
665 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
666 switch (info->cmd) {
667 case ETHTOOL_GRXRINGS:
668 info->data = adapter->num_rx_queues;
669 return 0;
670 }
671 return -EOPNOTSUPP;
672 }
673
674 #ifdef VMXNET3_RSS
675 static u32
676 vmxnet3_get_rss_indir_size(struct net_device *netdev)
677 {
678 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
679 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
680
681 return rssConf->indTableSize;
682 }
683
684 static int
685 vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
686 {
687 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
688 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
689 unsigned int n = rssConf->indTableSize;
690
691 if (hfunc)
692 *hfunc = ETH_RSS_HASH_TOP;
693 if (!p)
694 return 0;
695 while (n--)
696 p[n] = rssConf->indTable[n];
697 return 0;
698
699 }
700
701 static int
702 vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
703 const u8 hfunc)
704 {
705 unsigned int i;
706 unsigned long flags;
707 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
708 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
709
710 /* We do not allow change in unsupported parameters */
711 if (key ||
712 (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
713 return -EOPNOTSUPP;
714 if (!p)
715 return 0;
716 for (i = 0; i < rssConf->indTableSize; i++)
717 rssConf->indTable[i] = p[i];
718
719 spin_lock_irqsave(&adapter->cmd_lock, flags);
720 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
721 VMXNET3_CMD_UPDATE_RSSIDT);
722 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
723
724 return 0;
725
726 }
727 #endif
728
729 static int
730 vmxnet3_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
731 {
732 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
733
734 if (!VMXNET3_VERSION_GE_3(adapter))
735 return -EOPNOTSUPP;
736
737 switch (adapter->coal_conf->coalMode) {
738 case VMXNET3_COALESCE_DISABLED:
739 /* struct ethtool_coalesce is already initialized to 0 */
740 break;
741 case VMXNET3_COALESCE_ADAPT:
742 ec->use_adaptive_rx_coalesce = true;
743 break;
744 case VMXNET3_COALESCE_STATIC:
745 ec->tx_max_coalesced_frames =
746 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth;
747 ec->rx_max_coalesced_frames =
748 adapter->coal_conf->coalPara.coalStatic.rx_depth;
749 break;
750 case VMXNET3_COALESCE_RBC: {
751 u32 rbc_rate;
752
753 rbc_rate = adapter->coal_conf->coalPara.coalRbc.rbc_rate;
754 ec->rx_coalesce_usecs = VMXNET3_COAL_RBC_USECS(rbc_rate);
755 }
756 break;
757 default:
758 return -EOPNOTSUPP;
759 }
760
761 return 0;
762 }
763
764 static int
765 vmxnet3_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
766 {
767 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
768 struct Vmxnet3_DriverShared *shared = adapter->shared;
769 union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
770 unsigned long flags;
771
772 if (!VMXNET3_VERSION_GE_3(adapter))
773 return -EOPNOTSUPP;
774
775 if (ec->rx_coalesce_usecs_irq ||
776 ec->rx_max_coalesced_frames_irq ||
777 ec->tx_coalesce_usecs ||
778 ec->tx_coalesce_usecs_irq ||
779 ec->tx_max_coalesced_frames_irq ||
780 ec->stats_block_coalesce_usecs ||
781 ec->use_adaptive_tx_coalesce ||
782 ec->pkt_rate_low ||
783 ec->rx_coalesce_usecs_low ||
784 ec->rx_max_coalesced_frames_low ||
785 ec->tx_coalesce_usecs_low ||
786 ec->tx_max_coalesced_frames_low ||
787 ec->pkt_rate_high ||
788 ec->rx_coalesce_usecs_high ||
789 ec->rx_max_coalesced_frames_high ||
790 ec->tx_coalesce_usecs_high ||
791 ec->tx_max_coalesced_frames_high ||
792 ec->rate_sample_interval) {
793 return -EINVAL;
794 }
795
796 if ((ec->rx_coalesce_usecs == 0) &&
797 (ec->use_adaptive_rx_coalesce == 0) &&
798 (ec->tx_max_coalesced_frames == 0) &&
799 (ec->rx_max_coalesced_frames == 0)) {
800 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
801 adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
802 goto done;
803 }
804
805 if (ec->rx_coalesce_usecs != 0) {
806 u32 rbc_rate;
807
808 if ((ec->use_adaptive_rx_coalesce != 0) ||
809 (ec->tx_max_coalesced_frames != 0) ||
810 (ec->rx_max_coalesced_frames != 0)) {
811 return -EINVAL;
812 }
813
814 rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
815 if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
816 rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
817 return -EINVAL;
818 }
819
820 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
821 adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
822 adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
823 goto done;
824 }
825
826 if (ec->use_adaptive_rx_coalesce != 0) {
827 if ((ec->rx_coalesce_usecs != 0) ||
828 (ec->tx_max_coalesced_frames != 0) ||
829 (ec->rx_max_coalesced_frames != 0)) {
830 return -EINVAL;
831 }
832 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
833 adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
834 goto done;
835 }
836
837 if ((ec->tx_max_coalesced_frames != 0) ||
838 (ec->rx_max_coalesced_frames != 0)) {
839 if ((ec->rx_coalesce_usecs != 0) ||
840 (ec->use_adaptive_rx_coalesce != 0)) {
841 return -EINVAL;
842 }
843
844 if ((ec->tx_max_coalesced_frames >
845 VMXNET3_COAL_STATIC_MAX_DEPTH) ||
846 (ec->rx_max_coalesced_frames >
847 VMXNET3_COAL_STATIC_MAX_DEPTH)) {
848 return -EINVAL;
849 }
850
851 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
852 adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
853
854 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
855 (ec->tx_max_coalesced_frames ?
856 ec->tx_max_coalesced_frames :
857 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
858
859 adapter->coal_conf->coalPara.coalStatic.rx_depth =
860 (ec->rx_max_coalesced_frames ?
861 ec->rx_max_coalesced_frames :
862 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
863
864 adapter->coal_conf->coalPara.coalStatic.tx_depth =
865 VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
866 goto done;
867 }
868
869 done:
870 adapter->default_coal_mode = false;
871 if (netif_running(netdev)) {
872 spin_lock_irqsave(&adapter->cmd_lock, flags);
873 cmdInfo->varConf.confVer = 1;
874 cmdInfo->varConf.confLen =
875 cpu_to_le32(sizeof(*adapter->coal_conf));
876 cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa);
877 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
878 VMXNET3_CMD_SET_COALESCE);
879 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
880 }
881
882 return 0;
883 }
884
885 static const struct ethtool_ops vmxnet3_ethtool_ops = {
886 .get_drvinfo = vmxnet3_get_drvinfo,
887 .get_regs_len = vmxnet3_get_regs_len,
888 .get_regs = vmxnet3_get_regs,
889 .get_wol = vmxnet3_get_wol,
890 .set_wol = vmxnet3_set_wol,
891 .get_link = ethtool_op_get_link,
892 .get_coalesce = vmxnet3_get_coalesce,
893 .set_coalesce = vmxnet3_set_coalesce,
894 .get_strings = vmxnet3_get_strings,
895 .get_sset_count = vmxnet3_get_sset_count,
896 .get_ethtool_stats = vmxnet3_get_ethtool_stats,
897 .get_ringparam = vmxnet3_get_ringparam,
898 .set_ringparam = vmxnet3_set_ringparam,
899 .get_rxnfc = vmxnet3_get_rxnfc,
900 #ifdef VMXNET3_RSS
901 .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
902 .get_rxfh = vmxnet3_get_rss,
903 .set_rxfh = vmxnet3_set_rss,
904 #endif
905 .get_link_ksettings = vmxnet3_get_link_ksettings,
906 };
907
908 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
909 {
910 netdev->ethtool_ops = &vmxnet3_ethtool_ops;
911 }
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