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Merge tag 'platform-drivers-x86-v4.4-2' of git://git.infradead.org/users/dvhart/linux...
[deliverable/linux.git] / drivers / net / vmxnet3 / vmxnet3_ethtool.c
1 /*
2 * Linux driver for VMware's vmxnet3 ethernet NIC.
3 *
4 * Copyright (C) 2008-2009, 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: Shreyas Bhatewara <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 struct rtnl_link_stats64 *
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 return stats;
165 }
166
167 static int
168 vmxnet3_get_sset_count(struct net_device *netdev, int sset)
169 {
170 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
171 switch (sset) {
172 case ETH_SS_STATS:
173 return (ARRAY_SIZE(vmxnet3_tq_dev_stats) +
174 ARRAY_SIZE(vmxnet3_tq_driver_stats)) *
175 adapter->num_tx_queues +
176 (ARRAY_SIZE(vmxnet3_rq_dev_stats) +
177 ARRAY_SIZE(vmxnet3_rq_driver_stats)) *
178 adapter->num_rx_queues +
179 ARRAY_SIZE(vmxnet3_global_stats);
180 default:
181 return -EOPNOTSUPP;
182 }
183 }
184
185
186 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
187 * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
188 * Therefore, if any registers are added, removed or modified, then a version
189 * bump and a corresponding change in the vmxnet3 support for ethtool(8)
190 * --register-dump would be required.
191 */
192 static int
193 vmxnet3_get_regs_len(struct net_device *netdev)
194 {
195 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
196
197 return ((9 /* BAR1 registers */ +
198 (1 + adapter->intr.num_intrs) +
199 (1 + adapter->num_tx_queues * 17 /* Tx queue registers */) +
200 (1 + adapter->num_rx_queues * 23 /* Rx queue registers */)) *
201 sizeof(u32));
202 }
203
204
205 static void
206 vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
207 {
208 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
209
210 strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
211
212 strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
213 sizeof(drvinfo->version));
214
215 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
216 sizeof(drvinfo->bus_info));
217 }
218
219
220 static void
221 vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
222 {
223 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
224 if (stringset == ETH_SS_STATS) {
225 int i, j;
226 for (j = 0; j < adapter->num_tx_queues; j++) {
227 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
228 memcpy(buf, vmxnet3_tq_dev_stats[i].desc,
229 ETH_GSTRING_LEN);
230 buf += ETH_GSTRING_LEN;
231 }
232 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats);
233 i++) {
234 memcpy(buf, vmxnet3_tq_driver_stats[i].desc,
235 ETH_GSTRING_LEN);
236 buf += ETH_GSTRING_LEN;
237 }
238 }
239
240 for (j = 0; j < adapter->num_rx_queues; j++) {
241 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
242 memcpy(buf, vmxnet3_rq_dev_stats[i].desc,
243 ETH_GSTRING_LEN);
244 buf += ETH_GSTRING_LEN;
245 }
246 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats);
247 i++) {
248 memcpy(buf, vmxnet3_rq_driver_stats[i].desc,
249 ETH_GSTRING_LEN);
250 buf += ETH_GSTRING_LEN;
251 }
252 }
253
254 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
255 memcpy(buf, vmxnet3_global_stats[i].desc,
256 ETH_GSTRING_LEN);
257 buf += ETH_GSTRING_LEN;
258 }
259 }
260 }
261
262 int vmxnet3_set_features(struct net_device *netdev, netdev_features_t features)
263 {
264 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
265 unsigned long flags;
266 netdev_features_t changed = features ^ netdev->features;
267
268 if (changed & (NETIF_F_RXCSUM | NETIF_F_LRO |
269 NETIF_F_HW_VLAN_CTAG_RX)) {
270 if (features & NETIF_F_RXCSUM)
271 adapter->shared->devRead.misc.uptFeatures |=
272 UPT1_F_RXCSUM;
273 else
274 adapter->shared->devRead.misc.uptFeatures &=
275 ~UPT1_F_RXCSUM;
276
277 /* update hardware LRO capability accordingly */
278 if (features & NETIF_F_LRO)
279 adapter->shared->devRead.misc.uptFeatures |=
280 UPT1_F_LRO;
281 else
282 adapter->shared->devRead.misc.uptFeatures &=
283 ~UPT1_F_LRO;
284
285 if (features & NETIF_F_HW_VLAN_CTAG_RX)
286 adapter->shared->devRead.misc.uptFeatures |=
287 UPT1_F_RXVLAN;
288 else
289 adapter->shared->devRead.misc.uptFeatures &=
290 ~UPT1_F_RXVLAN;
291
292 spin_lock_irqsave(&adapter->cmd_lock, flags);
293 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
294 VMXNET3_CMD_UPDATE_FEATURE);
295 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
296 }
297 return 0;
298 }
299
300 static void
301 vmxnet3_get_ethtool_stats(struct net_device *netdev,
302 struct ethtool_stats *stats, u64 *buf)
303 {
304 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
305 unsigned long flags;
306 u8 *base;
307 int i;
308 int j = 0;
309
310 spin_lock_irqsave(&adapter->cmd_lock, flags);
311 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
312 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
313
314 /* this does assume each counter is 64-bit wide */
315 for (j = 0; j < adapter->num_tx_queues; j++) {
316 base = (u8 *)&adapter->tqd_start[j].stats;
317 *buf++ = (u64)j;
318 for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
319 *buf++ = *(u64 *)(base +
320 vmxnet3_tq_dev_stats[i].offset);
321
322 base = (u8 *)&adapter->tx_queue[j].stats;
323 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
324 *buf++ = *(u64 *)(base +
325 vmxnet3_tq_driver_stats[i].offset);
326 }
327
328 for (j = 0; j < adapter->num_rx_queues; j++) {
329 base = (u8 *)&adapter->rqd_start[j].stats;
330 *buf++ = (u64) j;
331 for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
332 *buf++ = *(u64 *)(base +
333 vmxnet3_rq_dev_stats[i].offset);
334
335 base = (u8 *)&adapter->rx_queue[j].stats;
336 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
337 *buf++ = *(u64 *)(base +
338 vmxnet3_rq_driver_stats[i].offset);
339 }
340
341 base = (u8 *)adapter;
342 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
343 *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
344 }
345
346
347 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
348 * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
349 * Therefore, if any registers are added, removed or modified, then a version
350 * bump and a corresponding change in the vmxnet3 support for ethtool(8)
351 * --register-dump would be required.
352 */
353 static void
354 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
355 {
356 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
357 u32 *buf = p;
358 int i = 0, j = 0;
359
360 memset(p, 0, vmxnet3_get_regs_len(netdev));
361
362 regs->version = 2;
363
364 /* Update vmxnet3_get_regs_len if we want to dump more registers */
365
366 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
367 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
368 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAL);
369 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAH);
370 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
371 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
372 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
373 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
374 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ECR);
375
376 buf[j++] = adapter->intr.num_intrs;
377 for (i = 0; i < adapter->intr.num_intrs; i++) {
378 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_IMR
379 + i * VMXNET3_REG_ALIGN);
380 }
381
382 buf[j++] = adapter->num_tx_queues;
383 for (i = 0; i < adapter->num_tx_queues; i++) {
384 struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i];
385
386 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_TXPROD +
387 i * VMXNET3_REG_ALIGN);
388
389 buf[j++] = VMXNET3_GET_ADDR_LO(tq->tx_ring.basePA);
390 buf[j++] = VMXNET3_GET_ADDR_HI(tq->tx_ring.basePA);
391 buf[j++] = tq->tx_ring.size;
392 buf[j++] = tq->tx_ring.next2fill;
393 buf[j++] = tq->tx_ring.next2comp;
394 buf[j++] = tq->tx_ring.gen;
395
396 buf[j++] = VMXNET3_GET_ADDR_LO(tq->data_ring.basePA);
397 buf[j++] = VMXNET3_GET_ADDR_HI(tq->data_ring.basePA);
398 buf[j++] = tq->data_ring.size;
399 /* transmit data ring buffer size */
400 buf[j++] = VMXNET3_HDR_COPY_SIZE;
401
402 buf[j++] = VMXNET3_GET_ADDR_LO(tq->comp_ring.basePA);
403 buf[j++] = VMXNET3_GET_ADDR_HI(tq->comp_ring.basePA);
404 buf[j++] = tq->comp_ring.size;
405 buf[j++] = tq->comp_ring.next2proc;
406 buf[j++] = tq->comp_ring.gen;
407
408 buf[j++] = tq->stopped;
409 }
410
411 buf[j++] = adapter->num_rx_queues;
412 for (i = 0; i < adapter->num_rx_queues; i++) {
413 struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
414
415 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD +
416 i * VMXNET3_REG_ALIGN);
417 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD2 +
418 i * VMXNET3_REG_ALIGN);
419
420 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[0].basePA);
421 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[0].basePA);
422 buf[j++] = rq->rx_ring[0].size;
423 buf[j++] = rq->rx_ring[0].next2fill;
424 buf[j++] = rq->rx_ring[0].next2comp;
425 buf[j++] = rq->rx_ring[0].gen;
426
427 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[1].basePA);
428 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[1].basePA);
429 buf[j++] = rq->rx_ring[1].size;
430 buf[j++] = rq->rx_ring[1].next2fill;
431 buf[j++] = rq->rx_ring[1].next2comp;
432 buf[j++] = rq->rx_ring[1].gen;
433
434 /* receive data ring */
435 buf[j++] = 0;
436 buf[j++] = 0;
437 buf[j++] = 0;
438 buf[j++] = 0;
439
440 buf[j++] = VMXNET3_GET_ADDR_LO(rq->comp_ring.basePA);
441 buf[j++] = VMXNET3_GET_ADDR_HI(rq->comp_ring.basePA);
442 buf[j++] = rq->comp_ring.size;
443 buf[j++] = rq->comp_ring.next2proc;
444 buf[j++] = rq->comp_ring.gen;
445 }
446 }
447
448
449 static void
450 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
451 {
452 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
453
454 wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
455 wol->wolopts = adapter->wol;
456 }
457
458
459 static int
460 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
461 {
462 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
463
464 if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
465 WAKE_MAGICSECURE)) {
466 return -EOPNOTSUPP;
467 }
468
469 adapter->wol = wol->wolopts;
470
471 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
472
473 return 0;
474 }
475
476
477 static int
478 vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
479 {
480 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
481
482 ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
483 SUPPORTED_TP;
484 ecmd->advertising = ADVERTISED_TP;
485 ecmd->port = PORT_TP;
486 ecmd->transceiver = XCVR_INTERNAL;
487
488 if (adapter->link_speed) {
489 ethtool_cmd_speed_set(ecmd, adapter->link_speed);
490 ecmd->duplex = DUPLEX_FULL;
491 } else {
492 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
493 ecmd->duplex = DUPLEX_UNKNOWN;
494 }
495 return 0;
496 }
497
498
499 static void
500 vmxnet3_get_ringparam(struct net_device *netdev,
501 struct ethtool_ringparam *param)
502 {
503 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
504
505 param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
506 param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
507 param->rx_mini_max_pending = 0;
508 param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
509
510 param->rx_pending = adapter->rx_ring_size;
511 param->tx_pending = adapter->tx_ring_size;
512 param->rx_mini_pending = 0;
513 param->rx_jumbo_pending = adapter->rx_ring2_size;
514 }
515
516
517 static int
518 vmxnet3_set_ringparam(struct net_device *netdev,
519 struct ethtool_ringparam *param)
520 {
521 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
522 u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
523 u32 sz;
524 int err = 0;
525
526 if (param->tx_pending == 0 || param->tx_pending >
527 VMXNET3_TX_RING_MAX_SIZE)
528 return -EINVAL;
529
530 if (param->rx_pending == 0 || param->rx_pending >
531 VMXNET3_RX_RING_MAX_SIZE)
532 return -EINVAL;
533
534 if (param->rx_jumbo_pending == 0 ||
535 param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
536 return -EINVAL;
537
538 /* if adapter not yet initialized, do nothing */
539 if (adapter->rx_buf_per_pkt == 0) {
540 netdev_err(netdev, "adapter not completely initialized, "
541 "ring size cannot be changed yet\n");
542 return -EOPNOTSUPP;
543 }
544
545 /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
546 new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
547 ~VMXNET3_RING_SIZE_MASK;
548 new_tx_ring_size = min_t(u32, new_tx_ring_size,
549 VMXNET3_TX_RING_MAX_SIZE);
550 if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
551 VMXNET3_RING_SIZE_ALIGN) != 0)
552 return -EINVAL;
553
554 /* ring0 has to be a multiple of
555 * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
556 */
557 sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
558 new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
559 new_rx_ring_size = min_t(u32, new_rx_ring_size,
560 VMXNET3_RX_RING_MAX_SIZE / sz * sz);
561 if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
562 sz) != 0)
563 return -EINVAL;
564
565 /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
566 new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
567 ~VMXNET3_RING_SIZE_MASK;
568 new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
569 VMXNET3_RX_RING2_MAX_SIZE);
570
571 if (new_tx_ring_size == adapter->tx_ring_size &&
572 new_rx_ring_size == adapter->rx_ring_size &&
573 new_rx_ring2_size == adapter->rx_ring2_size) {
574 return 0;
575 }
576
577 /*
578 * Reset_work may be in the middle of resetting the device, wait for its
579 * completion.
580 */
581 while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
582 msleep(1);
583
584 if (netif_running(netdev)) {
585 vmxnet3_quiesce_dev(adapter);
586 vmxnet3_reset_dev(adapter);
587
588 /* recreate the rx queue and the tx queue based on the
589 * new sizes */
590 vmxnet3_tq_destroy_all(adapter);
591 vmxnet3_rq_destroy_all(adapter);
592
593 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
594 new_rx_ring_size, new_rx_ring2_size);
595
596 if (err) {
597 /* failed, most likely because of OOM, try default
598 * size */
599 netdev_err(netdev, "failed to apply new sizes, "
600 "try the default ones\n");
601 new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
602 new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
603 new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
604 err = vmxnet3_create_queues(adapter,
605 new_tx_ring_size,
606 new_rx_ring_size,
607 new_rx_ring2_size);
608 if (err) {
609 netdev_err(netdev, "failed to create queues "
610 "with default sizes. Closing it\n");
611 goto out;
612 }
613 }
614
615 err = vmxnet3_activate_dev(adapter);
616 if (err)
617 netdev_err(netdev, "failed to re-activate, error %d."
618 " Closing it\n", err);
619 }
620 adapter->tx_ring_size = new_tx_ring_size;
621 adapter->rx_ring_size = new_rx_ring_size;
622 adapter->rx_ring2_size = new_rx_ring2_size;
623
624 out:
625 clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
626 if (err)
627 vmxnet3_force_close(adapter);
628
629 return err;
630 }
631
632
633 static int
634 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
635 u32 *rules)
636 {
637 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
638 switch (info->cmd) {
639 case ETHTOOL_GRXRINGS:
640 info->data = adapter->num_rx_queues;
641 return 0;
642 }
643 return -EOPNOTSUPP;
644 }
645
646 #ifdef VMXNET3_RSS
647 static u32
648 vmxnet3_get_rss_indir_size(struct net_device *netdev)
649 {
650 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
651 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
652
653 return rssConf->indTableSize;
654 }
655
656 static int
657 vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
658 {
659 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
660 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
661 unsigned int n = rssConf->indTableSize;
662
663 if (hfunc)
664 *hfunc = ETH_RSS_HASH_TOP;
665 if (!p)
666 return 0;
667 while (n--)
668 p[n] = rssConf->indTable[n];
669 return 0;
670
671 }
672
673 static int
674 vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
675 const u8 hfunc)
676 {
677 unsigned int i;
678 unsigned long flags;
679 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
680 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
681
682 /* We do not allow change in unsupported parameters */
683 if (key ||
684 (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
685 return -EOPNOTSUPP;
686 if (!p)
687 return 0;
688 for (i = 0; i < rssConf->indTableSize; i++)
689 rssConf->indTable[i] = p[i];
690
691 spin_lock_irqsave(&adapter->cmd_lock, flags);
692 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
693 VMXNET3_CMD_UPDATE_RSSIDT);
694 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
695
696 return 0;
697
698 }
699 #endif
700
701 static const struct ethtool_ops vmxnet3_ethtool_ops = {
702 .get_settings = vmxnet3_get_settings,
703 .get_drvinfo = vmxnet3_get_drvinfo,
704 .get_regs_len = vmxnet3_get_regs_len,
705 .get_regs = vmxnet3_get_regs,
706 .get_wol = vmxnet3_get_wol,
707 .set_wol = vmxnet3_set_wol,
708 .get_link = ethtool_op_get_link,
709 .get_strings = vmxnet3_get_strings,
710 .get_sset_count = vmxnet3_get_sset_count,
711 .get_ethtool_stats = vmxnet3_get_ethtool_stats,
712 .get_ringparam = vmxnet3_get_ringparam,
713 .set_ringparam = vmxnet3_set_ringparam,
714 .get_rxnfc = vmxnet3_get_rxnfc,
715 #ifdef VMXNET3_RSS
716 .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
717 .get_rxfh = vmxnet3_get_rss,
718 .set_rxfh = vmxnet3_set_rss,
719 #endif
720 };
721
722 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
723 {
724 netdev->ethtool_ops = &vmxnet3_ethtool_ops;
725 }
Linux kernel - Deliverables
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