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 		usleep_range(1000, 2000);
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 }
912