tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
260int 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
298static void
299vmxnet3_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 */
351static void
352vmxnet3_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
445static void
446vmxnet3_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
455static int
456vmxnet3_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
473static int
474vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
475{
476 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
477
478 ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
479 SUPPORTED_TP;
480 ecmd->advertising = ADVERTISED_TP;
481 ecmd->port = PORT_TP;
482 ecmd->transceiver = XCVR_INTERNAL;
483
484 if (adapter->link_speed) {
485 ethtool_cmd_speed_set(ecmd, adapter->link_speed);
486 ecmd->duplex = DUPLEX_FULL;
487 } else {
488 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
489 ecmd->duplex = DUPLEX_UNKNOWN;
490 }
491 return 0;
492}
493
494
495static void
496vmxnet3_get_ringparam(struct net_device *netdev,
497 struct ethtool_ringparam *param)
498{
499 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
500
501 param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
502 param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
503 param->rx_mini_max_pending = VMXNET3_VERSION_GE_3(adapter) ?
504 VMXNET3_RXDATA_DESC_MAX_SIZE : 0;
505 param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
506
507 param->rx_pending = adapter->rx_ring_size;
508 param->tx_pending = adapter->tx_ring_size;
509 param->rx_mini_pending = VMXNET3_VERSION_GE_3(adapter) ?
510 adapter->rxdata_desc_size : 0;
511 param->rx_jumbo_pending = adapter->rx_ring2_size;
512}
513
514
515static int
516vmxnet3_set_ringparam(struct net_device *netdev,
517 struct ethtool_ringparam *param)
518{
519 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
520 u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
521 u16 new_rxdata_desc_size;
522 u32 sz;
523 int err = 0;
524
525 if (param->tx_pending == 0 || param->tx_pending >
526 VMXNET3_TX_RING_MAX_SIZE)
527 return -EINVAL;
528
529 if (param->rx_pending == 0 || param->rx_pending >
530 VMXNET3_RX_RING_MAX_SIZE)
531 return -EINVAL;
532
533 if (param->rx_jumbo_pending == 0 ||
534 param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
535 return -EINVAL;
536
537 /* if adapter not yet initialized, do nothing */
538 if (adapter->rx_buf_per_pkt == 0) {
539 netdev_err(netdev, "adapter not completely initialized, "
540 "ring size cannot be changed yet\n");
541 return -EOPNOTSUPP;
542 }
543
544 if (VMXNET3_VERSION_GE_3(adapter)) {
545 if (param->rx_mini_pending < 0 ||
546 param->rx_mini_pending > VMXNET3_RXDATA_DESC_MAX_SIZE) {
547 return -EINVAL;
548 }
549 } else if (param->rx_mini_pending != 0) {
550 return -EINVAL;
551 }
552
553 /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
554 new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
555 ~VMXNET3_RING_SIZE_MASK;
556 new_tx_ring_size = min_t(u32, new_tx_ring_size,
557 VMXNET3_TX_RING_MAX_SIZE);
558 if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
559 VMXNET3_RING_SIZE_ALIGN) != 0)
560 return -EINVAL;
561
562 /* ring0 has to be a multiple of
563 * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
564 */
565 sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
566 new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
567 new_rx_ring_size = min_t(u32, new_rx_ring_size,
568 VMXNET3_RX_RING_MAX_SIZE / sz * sz);
569 if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
570 sz) != 0)
571 return -EINVAL;
572
573 /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
574 new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
575 ~VMXNET3_RING_SIZE_MASK;
576 new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
577 VMXNET3_RX_RING2_MAX_SIZE);
578
579 /* rx data ring buffer size has to be a multiple of
580 * VMXNET3_RXDATA_DESC_SIZE_ALIGN
581 */
582 new_rxdata_desc_size =
583 (param->rx_mini_pending + VMXNET3_RXDATA_DESC_SIZE_MASK) &
584 ~VMXNET3_RXDATA_DESC_SIZE_MASK;
585 new_rxdata_desc_size = min_t(u16, new_rxdata_desc_size,
586 VMXNET3_RXDATA_DESC_MAX_SIZE);
587
588 if (new_tx_ring_size == adapter->tx_ring_size &&
589 new_rx_ring_size == adapter->rx_ring_size &&
590 new_rx_ring2_size == adapter->rx_ring2_size &&
591 new_rxdata_desc_size == adapter->rxdata_desc_size) {
592 return 0;
593 }
594
595 /*
596 * Reset_work may be in the middle of resetting the device, wait for its
597 * completion.
598 */
599 while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
600 msleep(1);
601
602 if (netif_running(netdev)) {
603 vmxnet3_quiesce_dev(adapter);
604 vmxnet3_reset_dev(adapter);
605
606 /* recreate the rx queue and the tx queue based on the
607 * new sizes */
608 vmxnet3_tq_destroy_all(adapter);
609 vmxnet3_rq_destroy_all(adapter);
610
611 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
612 new_rx_ring_size, new_rx_ring2_size,
613 adapter->txdata_desc_size,
614 new_rxdata_desc_size);
615 if (err) {
616 /* failed, most likely because of OOM, try default
617 * size */
618 netdev_err(netdev, "failed to apply new sizes, "
619 "try the default ones\n");
620 new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
621 new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
622 new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
623 new_rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
624 VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
625
626 err = vmxnet3_create_queues(adapter,
627 new_tx_ring_size,
628 new_rx_ring_size,
629 new_rx_ring2_size,
630 adapter->txdata_desc_size,
631 new_rxdata_desc_size);
632 if (err) {
633 netdev_err(netdev, "failed to create queues "
634 "with default sizes. Closing it\n");
635 goto out;
636 }
637 }
638
639 err = vmxnet3_activate_dev(adapter);
640 if (err)
641 netdev_err(netdev, "failed to re-activate, error %d."
642 " Closing it\n", err);
643 }
644 adapter->tx_ring_size = new_tx_ring_size;
645 adapter->rx_ring_size = new_rx_ring_size;
646 adapter->rx_ring2_size = new_rx_ring2_size;
647 adapter->rxdata_desc_size = new_rxdata_desc_size;
648
649out:
650 clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
651 if (err)
652 vmxnet3_force_close(adapter);
653
654 return err;
655}
656
657
658static int
659vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
660 u32 *rules)
661{
662 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
663 switch (info->cmd) {
664 case ETHTOOL_GRXRINGS:
665 info->data = adapter->num_rx_queues;
666 return 0;
667 }
668 return -EOPNOTSUPP;
669}
670
671#ifdef VMXNET3_RSS
672static u32
673vmxnet3_get_rss_indir_size(struct net_device *netdev)
674{
675 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
676 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
677
678 return rssConf->indTableSize;
679}
680
681static int
682vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
683{
684 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
685 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
686 unsigned int n = rssConf->indTableSize;
687
688 if (hfunc)
689 *hfunc = ETH_RSS_HASH_TOP;
690 if (!p)
691 return 0;
692 while (n--)
693 p[n] = rssConf->indTable[n];
694 return 0;
695
696}
697
698static int
699vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
700 const u8 hfunc)
701{
702 unsigned int i;
703 unsigned long flags;
704 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
705 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
706
707 /* We do not allow change in unsupported parameters */
708 if (key ||
709 (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
710 return -EOPNOTSUPP;
711 if (!p)
712 return 0;
713 for (i = 0; i < rssConf->indTableSize; i++)
714 rssConf->indTable[i] = p[i];
715
716 spin_lock_irqsave(&adapter->cmd_lock, flags);
717 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
718 VMXNET3_CMD_UPDATE_RSSIDT);
719 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
720
721 return 0;
722
723}
724#endif
725
726static int
727vmxnet3_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
728{
729 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
730
731 if (!VMXNET3_VERSION_GE_3(adapter))
732 return -EOPNOTSUPP;
733
734 switch (adapter->coal_conf->coalMode) {
735 case VMXNET3_COALESCE_DISABLED:
736 /* struct ethtool_coalesce is already initialized to 0 */
737 break;
738 case VMXNET3_COALESCE_ADAPT:
739 ec->use_adaptive_rx_coalesce = true;
740 break;
741 case VMXNET3_COALESCE_STATIC:
742 ec->tx_max_coalesced_frames =
743 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth;
744 ec->rx_max_coalesced_frames =
745 adapter->coal_conf->coalPara.coalStatic.rx_depth;
746 break;
747 case VMXNET3_COALESCE_RBC: {
748 u32 rbc_rate;
749
750 rbc_rate = adapter->coal_conf->coalPara.coalRbc.rbc_rate;
751 ec->rx_coalesce_usecs = VMXNET3_COAL_RBC_USECS(rbc_rate);
752 }
753 break;
754 default:
755 return -EOPNOTSUPP;
756 }
757
758 return 0;
759}
760
761static int
762vmxnet3_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec)
763{
764 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
765 struct Vmxnet3_DriverShared *shared = adapter->shared;
766 union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
767 unsigned long flags;
768
769 if (!VMXNET3_VERSION_GE_3(adapter))
770 return -EOPNOTSUPP;
771
772 if (ec->rx_coalesce_usecs_irq ||
773 ec->rx_max_coalesced_frames_irq ||
774 ec->tx_coalesce_usecs ||
775 ec->tx_coalesce_usecs_irq ||
776 ec->tx_max_coalesced_frames_irq ||
777 ec->stats_block_coalesce_usecs ||
778 ec->use_adaptive_tx_coalesce ||
779 ec->pkt_rate_low ||
780 ec->rx_coalesce_usecs_low ||
781 ec->rx_max_coalesced_frames_low ||
782 ec->tx_coalesce_usecs_low ||
783 ec->tx_max_coalesced_frames_low ||
784 ec->pkt_rate_high ||
785 ec->rx_coalesce_usecs_high ||
786 ec->rx_max_coalesced_frames_high ||
787 ec->tx_coalesce_usecs_high ||
788 ec->tx_max_coalesced_frames_high ||
789 ec->rate_sample_interval) {
790 return -EINVAL;
791 }
792
793 if ((ec->rx_coalesce_usecs == 0) &&
794 (ec->use_adaptive_rx_coalesce == 0) &&
795 (ec->tx_max_coalesced_frames == 0) &&
796 (ec->rx_max_coalesced_frames == 0)) {
797 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
798 adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
799 goto done;
800 }
801
802 if (ec->rx_coalesce_usecs != 0) {
803 u32 rbc_rate;
804
805 if ((ec->use_adaptive_rx_coalesce != 0) ||
806 (ec->tx_max_coalesced_frames != 0) ||
807 (ec->rx_max_coalesced_frames != 0)) {
808 return -EINVAL;
809 }
810
811 rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
812 if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
813 rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
814 return -EINVAL;
815 }
816
817 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
818 adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
819 adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
820 goto done;
821 }
822
823 if (ec->use_adaptive_rx_coalesce != 0) {
824 if ((ec->rx_coalesce_usecs != 0) ||
825 (ec->tx_max_coalesced_frames != 0) ||
826 (ec->rx_max_coalesced_frames != 0)) {
827 return -EINVAL;
828 }
829 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
830 adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
831 goto done;
832 }
833
834 if ((ec->tx_max_coalesced_frames != 0) ||
835 (ec->rx_max_coalesced_frames != 0)) {
836 if ((ec->rx_coalesce_usecs != 0) ||
837 (ec->use_adaptive_rx_coalesce != 0)) {
838 return -EINVAL;
839 }
840
841 if ((ec->tx_max_coalesced_frames >
842 VMXNET3_COAL_STATIC_MAX_DEPTH) ||
843 (ec->rx_max_coalesced_frames >
844 VMXNET3_COAL_STATIC_MAX_DEPTH)) {
845 return -EINVAL;
846 }
847
848 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
849 adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
850
851 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
852 (ec->tx_max_coalesced_frames ?
853 ec->tx_max_coalesced_frames :
854 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
855
856 adapter->coal_conf->coalPara.coalStatic.rx_depth =
857 (ec->rx_max_coalesced_frames ?
858 ec->rx_max_coalesced_frames :
859 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
860
861 adapter->coal_conf->coalPara.coalStatic.tx_depth =
862 VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
863 goto done;
864 }
865
866done:
867 adapter->default_coal_mode = false;
868 if (netif_running(netdev)) {
869 spin_lock_irqsave(&adapter->cmd_lock, flags);
870 cmdInfo->varConf.confVer = 1;
871 cmdInfo->varConf.confLen =
872 cpu_to_le32(sizeof(*adapter->coal_conf));
873 cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa);
874 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
875 VMXNET3_CMD_SET_COALESCE);
876 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
877 }
878
879 return 0;
880}
881
882static const struct ethtool_ops vmxnet3_ethtool_ops = {
883 .get_settings = vmxnet3_get_settings,
884 .get_drvinfo = vmxnet3_get_drvinfo,
885 .get_regs_len = vmxnet3_get_regs_len,
886 .get_regs = vmxnet3_get_regs,
887 .get_wol = vmxnet3_get_wol,
888 .set_wol = vmxnet3_set_wol,
889 .get_link = ethtool_op_get_link,
890 .get_coalesce = vmxnet3_get_coalesce,
891 .set_coalesce = vmxnet3_set_coalesce,
892 .get_strings = vmxnet3_get_strings,
893 .get_sset_count = vmxnet3_get_sset_count,
894 .get_ethtool_stats = vmxnet3_get_ethtool_stats,
895 .get_ringparam = vmxnet3_get_ringparam,
896 .set_ringparam = vmxnet3_set_ringparam,
897 .get_rxnfc = vmxnet3_get_rxnfc,
898#ifdef VMXNET3_RSS
899 .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
900 .get_rxfh = vmxnet3_get_rss,
901 .set_rxfh = vmxnet3_set_rss,
902#endif
903};
904
905void vmxnet3_set_ethtool_ops(struct net_device *netdev)
906{
907 netdev->ethtool_ops = &vmxnet3_ethtool_ops;
908}