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/drivers/net/vmxnet3/vmxnet3_ethtool.c

http://github.com/mirrors/linux
C | 901 lines | 696 code | 135 blank | 70 comment | 101 complexity | 61d6ce344e6ca9bb73dc22ac312b31c7 MD5 | raw file
  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
 30struct vmxnet3_stat_desc {
 31	char desc[ETH_GSTRING_LEN];
 32	int  offset;
 33};
 34
 35
 36/* per tq stats maintained by the device */
 37static const struct vmxnet3_stat_desc
 38vmxnet3_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 */
 54static const struct vmxnet3_stat_desc
 55vmxnet3_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 */
 78static const struct vmxnet3_stat_desc
 79vmxnet3_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 */
 94static const struct vmxnet3_stat_desc
 95vmxnet3_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 */
108static const struct vmxnet3_stat_desc
109vmxnet3_global_stats[] = {
110	/* description,         offset */
111	{ "tx timeout count",	offsetof(struct vmxnet3_adapter,
112					 tx_timeout_count) }
113};
114
115
116void
117vmxnet3_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
165static int
166vmxnet3_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 */
190static int
191vmxnet3_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
203static void
204vmxnet3_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
218static void
219vmxnet3_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
260netdev_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
270int vmxnet3_set_features(struct net_device *netdev, netdev_features_t features)
271{
272	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
273	unsigned long flags;
274	netdev_features_t changed = features ^ netdev->features;
275
276	if (changed & (NETIF_F_RXCSUM | NETIF_F_LRO |
277		       NETIF_F_HW_VLAN_CTAG_RX)) {
278		if (features & NETIF_F_RXCSUM)
279			adapter->shared->devRead.misc.uptFeatures |=
280			UPT1_F_RXCSUM;
281		else
282			adapter->shared->devRead.misc.uptFeatures &=
283			~UPT1_F_RXCSUM;
284
285		/* update hardware LRO capability accordingly */
286		if (features & NETIF_F_LRO)
287			adapter->shared->devRead.misc.uptFeatures |=
288							UPT1_F_LRO;
289		else
290			adapter->shared->devRead.misc.uptFeatures &=
291							~UPT1_F_LRO;
292
293		if (features & NETIF_F_HW_VLAN_CTAG_RX)
294			adapter->shared->devRead.misc.uptFeatures |=
295			UPT1_F_RXVLAN;
296		else
297			adapter->shared->devRead.misc.uptFeatures &=
298			~UPT1_F_RXVLAN;
299
300		spin_lock_irqsave(&adapter->cmd_lock, flags);
301		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
302				       VMXNET3_CMD_UPDATE_FEATURE);
303		spin_unlock_irqrestore(&adapter->cmd_lock, flags);
304	}
305	return 0;
306}
307
308static void
309vmxnet3_get_ethtool_stats(struct net_device *netdev,
310			  struct ethtool_stats *stats, u64  *buf)
311{
312	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
313	unsigned long flags;
314	u8 *base;
315	int i;
316	int j = 0;
317
318	spin_lock_irqsave(&adapter->cmd_lock, flags);
319	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
320	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
321
322	/* this does assume each counter is 64-bit wide */
323	for (j = 0; j < adapter->num_tx_queues; j++) {
324		base = (u8 *)&adapter->tqd_start[j].stats;
325		*buf++ = (u64)j;
326		for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
327			*buf++ = *(u64 *)(base +
328					  vmxnet3_tq_dev_stats[i].offset);
329
330		base = (u8 *)&adapter->tx_queue[j].stats;
331		for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
332			*buf++ = *(u64 *)(base +
333					  vmxnet3_tq_driver_stats[i].offset);
334	}
335
336	for (j = 0; j < adapter->num_rx_queues; j++) {
337		base = (u8 *)&adapter->rqd_start[j].stats;
338		*buf++ = (u64) j;
339		for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
340			*buf++ = *(u64 *)(base +
341					  vmxnet3_rq_dev_stats[i].offset);
342
343		base = (u8 *)&adapter->rx_queue[j].stats;
344		for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
345			*buf++ = *(u64 *)(base +
346					  vmxnet3_rq_driver_stats[i].offset);
347	}
348
349	base = (u8 *)adapter;
350	for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
351		*buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
352}
353
354
355/* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
356 * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
357 * Therefore, if any registers are added, removed or modified, then a version
358 * bump and a corresponding change in the vmxnet3 support for ethtool(8)
359 * --register-dump would be required.
360 */
361static void
362vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
363{
364	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
365	u32 *buf = p;
366	int i = 0, j = 0;
367
368	memset(p, 0, vmxnet3_get_regs_len(netdev));
369
370	regs->version = 2;
371
372	/* Update vmxnet3_get_regs_len if we want to dump more registers */
373
374	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
375	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
376	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAL);
377	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAH);
378	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
379	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
380	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
381	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
382	buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ECR);
383
384	buf[j++] = adapter->intr.num_intrs;
385	for (i = 0; i < adapter->intr.num_intrs; i++) {
386		buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_IMR
387						 + i * VMXNET3_REG_ALIGN);
388	}
389
390	buf[j++] = adapter->num_tx_queues;
391	for (i = 0; i < adapter->num_tx_queues; i++) {
392		struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i];
393
394		buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_TXPROD +
395						 i * VMXNET3_REG_ALIGN);
396
397		buf[j++] = VMXNET3_GET_ADDR_LO(tq->tx_ring.basePA);
398		buf[j++] = VMXNET3_GET_ADDR_HI(tq->tx_ring.basePA);
399		buf[j++] = tq->tx_ring.size;
400		buf[j++] = tq->tx_ring.next2fill;
401		buf[j++] = tq->tx_ring.next2comp;
402		buf[j++] = tq->tx_ring.gen;
403
404		buf[j++] = VMXNET3_GET_ADDR_LO(tq->data_ring.basePA);
405		buf[j++] = VMXNET3_GET_ADDR_HI(tq->data_ring.basePA);
406		buf[j++] = tq->data_ring.size;
407		buf[j++] = tq->txdata_desc_size;
408
409		buf[j++] = VMXNET3_GET_ADDR_LO(tq->comp_ring.basePA);
410		buf[j++] = VMXNET3_GET_ADDR_HI(tq->comp_ring.basePA);
411		buf[j++] = tq->comp_ring.size;
412		buf[j++] = tq->comp_ring.next2proc;
413		buf[j++] = tq->comp_ring.gen;
414
415		buf[j++] = tq->stopped;
416	}
417
418	buf[j++] = adapter->num_rx_queues;
419	for (i = 0; i < adapter->num_rx_queues; i++) {
420		struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
421
422		buf[j++] =  VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD +
423						  i * VMXNET3_REG_ALIGN);
424		buf[j++] =  VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD2 +
425						  i * VMXNET3_REG_ALIGN);
426
427		buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[0].basePA);
428		buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[0].basePA);
429		buf[j++] = rq->rx_ring[0].size;
430		buf[j++] = rq->rx_ring[0].next2fill;
431		buf[j++] = rq->rx_ring[0].next2comp;
432		buf[j++] = rq->rx_ring[0].gen;
433
434		buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[1].basePA);
435		buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[1].basePA);
436		buf[j++] = rq->rx_ring[1].size;
437		buf[j++] = rq->rx_ring[1].next2fill;
438		buf[j++] = rq->rx_ring[1].next2comp;
439		buf[j++] = rq->rx_ring[1].gen;
440
441		buf[j++] = VMXNET3_GET_ADDR_LO(rq->data_ring.basePA);
442		buf[j++] = VMXNET3_GET_ADDR_HI(rq->data_ring.basePA);
443		buf[j++] = rq->rx_ring[0].size;
444		buf[j++] = rq->data_ring.desc_size;
445
446		buf[j++] = VMXNET3_GET_ADDR_LO(rq->comp_ring.basePA);
447		buf[j++] = VMXNET3_GET_ADDR_HI(rq->comp_ring.basePA);
448		buf[j++] = rq->comp_ring.size;
449		buf[j++] = rq->comp_ring.next2proc;
450		buf[j++] = rq->comp_ring.gen;
451	}
452}
453
454
455static void
456vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
457{
458	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
459
460	wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
461	wol->wolopts = adapter->wol;
462}
463
464
465static int
466vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
467{
468	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
469
470	if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
471			    WAKE_MAGICSECURE)) {
472		return -EOPNOTSUPP;
473	}
474
475	adapter->wol = wol->wolopts;
476
477	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
478
479	return 0;
480}
481
482
483static int
484vmxnet3_get_link_ksettings(struct net_device *netdev,
485			   struct ethtool_link_ksettings *ecmd)
486{
487	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
488
489	ethtool_link_ksettings_zero_link_mode(ecmd, supported);
490	ethtool_link_ksettings_add_link_mode(ecmd, supported, 10000baseT_Full);
491	ethtool_link_ksettings_add_link_mode(ecmd, supported, 1000baseT_Full);
492	ethtool_link_ksettings_add_link_mode(ecmd, supported, TP);
493	ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
494	ethtool_link_ksettings_add_link_mode(ecmd, advertising, TP);
495	ecmd->base.port = PORT_TP;
496
497	if (adapter->link_speed) {
498		ecmd->base.speed = adapter->link_speed;
499		ecmd->base.duplex = DUPLEX_FULL;
500	} else {
501		ecmd->base.speed = SPEED_UNKNOWN;
502		ecmd->base.duplex = DUPLEX_UNKNOWN;
503	}
504	return 0;
505}
506
507
508static void
509vmxnet3_get_ringparam(struct net_device *netdev,
510		      struct ethtool_ringparam *param)
511{
512	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
513
514	param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
515	param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
516	param->rx_mini_max_pending = VMXNET3_VERSION_GE_3(adapter) ?
517		VMXNET3_RXDATA_DESC_MAX_SIZE : 0;
518	param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
519
520	param->rx_pending = adapter->rx_ring_size;
521	param->tx_pending = adapter->tx_ring_size;
522	param->rx_mini_pending = VMXNET3_VERSION_GE_3(adapter) ?
523		adapter->rxdata_desc_size : 0;
524	param->rx_jumbo_pending = adapter->rx_ring2_size;
525}
526
527
528static int
529vmxnet3_set_ringparam(struct net_device *netdev,
530		      struct ethtool_ringparam *param)
531{
532	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
533	u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
534	u16 new_rxdata_desc_size;
535	u32 sz;
536	int err = 0;
537
538	if (param->tx_pending == 0 || param->tx_pending >
539						VMXNET3_TX_RING_MAX_SIZE)
540		return -EINVAL;
541
542	if (param->rx_pending == 0 || param->rx_pending >
543						VMXNET3_RX_RING_MAX_SIZE)
544		return -EINVAL;
545
546	if (param->rx_jumbo_pending == 0 ||
547	    param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
548		return -EINVAL;
549
550	/* if adapter not yet initialized, do nothing */
551	if (adapter->rx_buf_per_pkt == 0) {
552		netdev_err(netdev, "adapter not completely initialized, "
553			   "ring size cannot be changed yet\n");
554		return -EOPNOTSUPP;
555	}
556
557	if (VMXNET3_VERSION_GE_3(adapter)) {
558		if (param->rx_mini_pending > VMXNET3_RXDATA_DESC_MAX_SIZE)
559			return -EINVAL;
560	} else if (param->rx_mini_pending != 0) {
561		return -EINVAL;
562	}
563
564	/* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
565	new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
566							~VMXNET3_RING_SIZE_MASK;
567	new_tx_ring_size = min_t(u32, new_tx_ring_size,
568				 VMXNET3_TX_RING_MAX_SIZE);
569	if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
570						VMXNET3_RING_SIZE_ALIGN) != 0)
571		return -EINVAL;
572
573	/* ring0 has to be a multiple of
574	 * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
575	 */
576	sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
577	new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
578	new_rx_ring_size = min_t(u32, new_rx_ring_size,
579				 VMXNET3_RX_RING_MAX_SIZE / sz * sz);
580	if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
581							   sz) != 0)
582		return -EINVAL;
583
584	/* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
585	new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
586				~VMXNET3_RING_SIZE_MASK;
587	new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
588				  VMXNET3_RX_RING2_MAX_SIZE);
589
590	/* rx data ring buffer size has to be a multiple of
591	 * VMXNET3_RXDATA_DESC_SIZE_ALIGN
592	 */
593	new_rxdata_desc_size =
594		(param->rx_mini_pending + VMXNET3_RXDATA_DESC_SIZE_MASK) &
595		~VMXNET3_RXDATA_DESC_SIZE_MASK;
596	new_rxdata_desc_size = min_t(u16, new_rxdata_desc_size,
597				     VMXNET3_RXDATA_DESC_MAX_SIZE);
598
599	if (new_tx_ring_size == adapter->tx_ring_size &&
600	    new_rx_ring_size == adapter->rx_ring_size &&
601	    new_rx_ring2_size == adapter->rx_ring2_size &&
602	    new_rxdata_desc_size == adapter->rxdata_desc_size) {
603		return 0;
604	}
605
606	/*
607	 * Reset_work may be in the middle of resetting the device, wait for its
608	 * completion.
609	 */
610	while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
611		usleep_range(1000, 2000);
612
613	if (netif_running(netdev)) {
614		vmxnet3_quiesce_dev(adapter);
615		vmxnet3_reset_dev(adapter);
616
617		/* recreate the rx queue and the tx queue based on the
618		 * new sizes */
619		vmxnet3_tq_destroy_all(adapter);
620		vmxnet3_rq_destroy_all(adapter);
621
622		err = vmxnet3_create_queues(adapter, new_tx_ring_size,
623					    new_rx_ring_size, new_rx_ring2_size,
624					    adapter->txdata_desc_size,
625					    new_rxdata_desc_size);
626		if (err) {
627			/* failed, most likely because of OOM, try default
628			 * size */
629			netdev_err(netdev, "failed to apply new sizes, "
630				   "try the default ones\n");
631			new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
632			new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
633			new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
634			new_rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
635				VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
636
637			err = vmxnet3_create_queues(adapter,
638						    new_tx_ring_size,
639						    new_rx_ring_size,
640						    new_rx_ring2_size,
641						    adapter->txdata_desc_size,
642						    new_rxdata_desc_size);
643			if (err) {
644				netdev_err(netdev, "failed to create queues "
645					   "with default sizes. Closing it\n");
646				goto out;
647			}
648		}
649
650		err = vmxnet3_activate_dev(adapter);
651		if (err)
652			netdev_err(netdev, "failed to re-activate, error %d."
653				   " Closing it\n", err);
654	}
655	adapter->tx_ring_size = new_tx_ring_size;
656	adapter->rx_ring_size = new_rx_ring_size;
657	adapter->rx_ring2_size = new_rx_ring2_size;
658	adapter->rxdata_desc_size = new_rxdata_desc_size;
659
660out:
661	clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
662	if (err)
663		vmxnet3_force_close(adapter);
664
665	return err;
666}
667
668
669static int
670vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
671		  u32 *rules)
672{
673	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
674	switch (info->cmd) {
675	case ETHTOOL_GRXRINGS:
676		info->data = adapter->num_rx_queues;
677		return 0;
678	}
679	return -EOPNOTSUPP;
680}
681
682#ifdef VMXNET3_RSS
683static u32
684vmxnet3_get_rss_indir_size(struct net_device *netdev)
685{
686	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
687	struct UPT1_RSSConf *rssConf = adapter->rss_conf;
688
689	return rssConf->indTableSize;
690}
691
692static int
693vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
694{
695	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
696	struct UPT1_RSSConf *rssConf = adapter->rss_conf;
697	unsigned int n = rssConf->indTableSize;
698
699	if (hfunc)
700		*hfunc = ETH_RSS_HASH_TOP;
701	if (!p)
702		return 0;
703	while (n--)
704		p[n] = rssConf->indTable[n];
705	return 0;
706
707}
708
709static int
710vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
711		const u8 hfunc)
712{
713	unsigned int i;
714	unsigned long flags;
715	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
716	struct UPT1_RSSConf *rssConf = adapter->rss_conf;
717
718	/* We do not allow change in unsupported parameters */
719	if (key ||
720	    (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
721		return -EOPNOTSUPP;
722	if (!p)
723		return 0;
724	for (i = 0; i < rssConf->indTableSize; i++)
725		rssConf->indTable[i] = p[i];
726
727	spin_lock_irqsave(&adapter->cmd_lock, flags);
728	VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
729			       VMXNET3_CMD_UPDATE_RSSIDT);
730	spin_unlock_irqrestore(&adapter->cmd_lock, flags);
731
732	return 0;
733
734}
735#endif
736
737static int
738vmxnet3_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
739{
740	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
741
742	if (!VMXNET3_VERSION_GE_3(adapter))
743		return -EOPNOTSUPP;
744
745	switch (adapter->coal_conf->coalMode) {
746	case VMXNET3_COALESCE_DISABLED:
747		/* struct ethtool_coalesce is already initialized to 0 */
748		break;
749	case VMXNET3_COALESCE_ADAPT:
750		ec->use_adaptive_rx_coalesce = true;
751		break;
752	case VMXNET3_COALESCE_STATIC:
753		ec->tx_max_coalesced_frames =
754			adapter->coal_conf->coalPara.coalStatic.tx_comp_depth;
755		ec->rx_max_coalesced_frames =
756			adapter->coal_conf->coalPara.coalStatic.rx_depth;
757		break;
758	case VMXNET3_COALESCE_RBC: {
759		u32 rbc_rate;
760
761		rbc_rate = adapter->coal_conf->coalPara.coalRbc.rbc_rate;
762		ec->rx_coalesce_usecs = VMXNET3_COAL_RBC_USECS(rbc_rate);
763	}
764		break;
765	default:
766		return -EOPNOTSUPP;
767	}
768
769	return 0;
770}
771
772static int
773vmxnet3_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
774{
775	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
776	struct Vmxnet3_DriverShared *shared = adapter->shared;
777	union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
778	unsigned long flags;
779
780	if (!VMXNET3_VERSION_GE_3(adapter))
781		return -EOPNOTSUPP;
782
783	if ((ec->rx_coalesce_usecs == 0) &&
784	    (ec->use_adaptive_rx_coalesce == 0) &&
785	    (ec->tx_max_coalesced_frames == 0) &&
786	    (ec->rx_max_coalesced_frames == 0)) {
787		memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
788		adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
789		goto done;
790	}
791
792	if (ec->rx_coalesce_usecs != 0) {
793		u32 rbc_rate;
794
795		if ((ec->use_adaptive_rx_coalesce != 0) ||
796		    (ec->tx_max_coalesced_frames != 0) ||
797		    (ec->rx_max_coalesced_frames != 0)) {
798			return -EINVAL;
799		}
800
801		rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
802		if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
803		    rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
804			return -EINVAL;
805		}
806
807		memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
808		adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
809		adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
810		goto done;
811	}
812
813	if (ec->use_adaptive_rx_coalesce != 0) {
814		if ((ec->rx_coalesce_usecs != 0) ||
815		    (ec->tx_max_coalesced_frames != 0) ||
816		    (ec->rx_max_coalesced_frames != 0)) {
817			return -EINVAL;
818		}
819		memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
820		adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
821		goto done;
822	}
823
824	if ((ec->tx_max_coalesced_frames != 0) ||
825	    (ec->rx_max_coalesced_frames != 0)) {
826		if ((ec->rx_coalesce_usecs != 0) ||
827		    (ec->use_adaptive_rx_coalesce != 0)) {
828			return -EINVAL;
829		}
830
831		if ((ec->tx_max_coalesced_frames >
832		    VMXNET3_COAL_STATIC_MAX_DEPTH) ||
833		    (ec->rx_max_coalesced_frames >
834		     VMXNET3_COAL_STATIC_MAX_DEPTH)) {
835			return -EINVAL;
836		}
837
838		memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
839		adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
840
841		adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
842			(ec->tx_max_coalesced_frames ?
843			 ec->tx_max_coalesced_frames :
844			 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
845
846		adapter->coal_conf->coalPara.coalStatic.rx_depth =
847			(ec->rx_max_coalesced_frames ?
848			 ec->rx_max_coalesced_frames :
849			 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
850
851		adapter->coal_conf->coalPara.coalStatic.tx_depth =
852			 VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
853		goto done;
854	}
855
856done:
857	adapter->default_coal_mode = false;
858	if (netif_running(netdev)) {
859		spin_lock_irqsave(&adapter->cmd_lock, flags);
860		cmdInfo->varConf.confVer = 1;
861		cmdInfo->varConf.confLen =
862			cpu_to_le32(sizeof(*adapter->coal_conf));
863		cmdInfo->varConf.confPA  = cpu_to_le64(adapter->coal_conf_pa);
864		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
865				       VMXNET3_CMD_SET_COALESCE);
866		spin_unlock_irqrestore(&adapter->cmd_lock, flags);
867	}
868
869	return 0;
870}
871
872static const struct ethtool_ops vmxnet3_ethtool_ops = {
873	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
874				     ETHTOOL_COALESCE_MAX_FRAMES |
875				     ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
876	.get_drvinfo       = vmxnet3_get_drvinfo,
877	.get_regs_len      = vmxnet3_get_regs_len,
878	.get_regs          = vmxnet3_get_regs,
879	.get_wol           = vmxnet3_get_wol,
880	.set_wol           = vmxnet3_set_wol,
881	.get_link          = ethtool_op_get_link,
882	.get_coalesce      = vmxnet3_get_coalesce,
883	.set_coalesce      = vmxnet3_set_coalesce,
884	.get_strings       = vmxnet3_get_strings,
885	.get_sset_count	   = vmxnet3_get_sset_count,
886	.get_ethtool_stats = vmxnet3_get_ethtool_stats,
887	.get_ringparam     = vmxnet3_get_ringparam,
888	.set_ringparam     = vmxnet3_set_ringparam,
889	.get_rxnfc         = vmxnet3_get_rxnfc,
890#ifdef VMXNET3_RSS
891	.get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
892	.get_rxfh          = vmxnet3_get_rss,
893	.set_rxfh          = vmxnet3_set_rss,
894#endif
895	.get_link_ksettings = vmxnet3_get_link_ksettings,
896};
897
898void vmxnet3_set_ethtool_ops(struct net_device *netdev)
899{
900	netdev->ethtool_ops = &vmxnet3_ethtool_ops;
901}