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 }
1171