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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / vmxnet3 / vmxnet3_ethtool.c
blob1e4b9ba7098353fda842a55c454af4c1de3a0c9e
1 /*
2 * Linux driver for VMware's vmxnet3 ethernet NIC.
3 *
4 * Copyright (C) 2008-2016, VMware, Inc. All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; version 2 of the License and no later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more
14 * details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * The full GNU General Public License is included in this distribution in
21 * the file called "COPYING".
22 *
23 * Maintained by: pv-drivers@vmware.com
24 *
25 */
26
27
28 #include "vmxnet3_int.h"
29
30 struct vmxnet3_stat_desc {
31 char desc[ETH_GSTRING_LEN];
32 int offset;
33 };
34
35
36 /* per tq stats maintained by the device */
37 static const struct vmxnet3_stat_desc
38 vmxnet3_tq_dev_stats[] = {
39 /* description, offset */
40 { "Tx Queue#", 0 },
41 { " TSO pkts tx", offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
42 { " TSO bytes tx", offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
43 { " ucast pkts tx", offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
44 { " ucast bytes tx", offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
45 { " mcast pkts tx", offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
46 { " mcast bytes tx", offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
47 { " bcast pkts tx", offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
48 { " bcast bytes tx", offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
49 { " pkts tx err", offsetof(struct UPT1_TxStats, pktsTxError) },
50 { " pkts tx discard", offsetof(struct UPT1_TxStats, pktsTxDiscard) },
51 };
52
53 /* per tq stats maintained by the driver */
54 static const struct vmxnet3_stat_desc
55 vmxnet3_tq_driver_stats[] = {
56 /* description, offset */
57 {" drv dropped tx total", offsetof(struct vmxnet3_tq_driver_stats,
58 drop_total) },
59 { " too many frags", offsetof(struct vmxnet3_tq_driver_stats,
60 drop_too_many_frags) },
61 { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
62 drop_oversized_hdr) },
63 { " hdr err", offsetof(struct vmxnet3_tq_driver_stats,
64 drop_hdr_inspect_err) },
65 { " tso", offsetof(struct vmxnet3_tq_driver_stats,
66 drop_tso) },
67 { " ring full", offsetof(struct vmxnet3_tq_driver_stats,
68 tx_ring_full) },
69 { " pkts linearized", offsetof(struct vmxnet3_tq_driver_stats,
70 linearized) },
71 { " hdr cloned", offsetof(struct vmxnet3_tq_driver_stats,
72 copy_skb_header) },
73 { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
74 oversized_hdr) },
75 };
76
77 /* per rq stats maintained by the device */
78 static const struct vmxnet3_stat_desc
79 vmxnet3_rq_dev_stats[] = {
80 { "Rx Queue#", 0 },
81 { " LRO pkts rx", offsetof(struct UPT1_RxStats, LROPktsRxOK) },
82 { " LRO byte rx", offsetof(struct UPT1_RxStats, LROBytesRxOK) },
83 { " ucast pkts rx", offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
84 { " ucast bytes rx", offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
85 { " mcast pkts rx", offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
86 { " mcast bytes rx", offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
87 { " bcast pkts rx", offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
88 { " bcast bytes rx", offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
89 { " pkts rx OOB", offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
90 { " pkts rx err", offsetof(struct UPT1_RxStats, pktsRxError) },
91 };
92
93 /* per rq stats maintained by the driver */
94 static const struct vmxnet3_stat_desc
95 vmxnet3_rq_driver_stats[] = {
96 /* description, offset */
97 { " drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
98 drop_total) },
99 { " err", offsetof(struct vmxnet3_rq_driver_stats,
100 drop_err) },
101 { " fcs", offsetof(struct vmxnet3_rq_driver_stats,
102 drop_fcs) },
103 { " rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
104 rx_buf_alloc_failure) },
105 };
106
107 /* global stats maintained by the driver */
108 static const struct vmxnet3_stat_desc
109 vmxnet3_global_stats[] = {
110 /* description, offset */
111 { "tx timeout count", offsetof(struct vmxnet3_adapter,
112 tx_timeout_count) }
113 };
114
115
116 void
117 vmxnet3_get_stats64(struct net_device *netdev,
118 struct rtnl_link_stats64 *stats)
119 {
120 struct vmxnet3_adapter *adapter;
121 struct vmxnet3_tq_driver_stats *drvTxStats;
122 struct vmxnet3_rq_driver_stats *drvRxStats;
123 struct UPT1_TxStats *devTxStats;
124 struct UPT1_RxStats *devRxStats;
125 unsigned long flags;
126 int i;
127
128 adapter = netdev_priv(netdev);
129
130 /* Collect the dev stats into the shared area */
131 spin_lock_irqsave(&adapter->cmd_lock, flags);
132 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
133 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
134
135 for (i = 0; i < adapter->num_tx_queues; i++) {
136 devTxStats = &adapter->tqd_start[i].stats;
137 drvTxStats = &adapter->tx_queue[i].stats;
138 stats->tx_packets += devTxStats->ucastPktsTxOK +
139 devTxStats->mcastPktsTxOK +
140 devTxStats->bcastPktsTxOK;
141 stats->tx_bytes += devTxStats->ucastBytesTxOK +
142 devTxStats->mcastBytesTxOK +
143 devTxStats->bcastBytesTxOK;
144 stats->tx_errors += devTxStats->pktsTxError;
145 stats->tx_dropped += drvTxStats->drop_total;
146 }
147
148 for (i = 0; i < adapter->num_rx_queues; i++) {
149 devRxStats = &adapter->rqd_start[i].stats;
150 drvRxStats = &adapter->rx_queue[i].stats;
151 stats->rx_packets += devRxStats->ucastPktsRxOK +
152 devRxStats->mcastPktsRxOK +
153 devRxStats->bcastPktsRxOK;
154
155 stats->rx_bytes += devRxStats->ucastBytesRxOK +
156 devRxStats->mcastBytesRxOK +
157 devRxStats->bcastBytesRxOK;
158
159 stats->rx_errors += devRxStats->pktsRxError;
160 stats->rx_dropped += drvRxStats->drop_total;
161 stats->multicast += devRxStats->mcastPktsRxOK;
162 }
163 }
164
165 static int
166 vmxnet3_get_sset_count(struct net_device *netdev, int sset)
167 {
168 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
169 switch (sset) {
170 case ETH_SS_STATS:
171 return (ARRAY_SIZE(vmxnet3_tq_dev_stats) +
172 ARRAY_SIZE(vmxnet3_tq_driver_stats)) *
173 adapter->num_tx_queues +
174 (ARRAY_SIZE(vmxnet3_rq_dev_stats) +
175 ARRAY_SIZE(vmxnet3_rq_driver_stats)) *
176 adapter->num_rx_queues +
177 ARRAY_SIZE(vmxnet3_global_stats);
178 default:
179 return -EOPNOTSUPP;
180 }
181 }
182
183
184 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
185 * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
186 * Therefore, if any registers are added, removed or modified, then a version
187 * bump and a corresponding change in the vmxnet3 support for ethtool(8)
188 * --register-dump would be required.
189 */
190 static int
191 vmxnet3_get_regs_len(struct net_device *netdev)
192 {
193 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
194
195 return ((9 /* BAR1 registers */ +
196 (1 + adapter->intr.num_intrs) +
197 (1 + adapter->num_tx_queues * 17 /* Tx queue registers */) +
198 (1 + adapter->num_rx_queues * 23 /* Rx queue registers */)) *
199 sizeof(u32));
200 }
201
202
203 static void
204 vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
205 {
206 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
207
208 strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
209
210 strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
211 sizeof(drvinfo->version));
212
213 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
214 sizeof(drvinfo->bus_info));
215 }
216
217
218 static void
219 vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
220 {
221 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
222 if (stringset == ETH_SS_STATS) {
223 int i, j;
224 for (j = 0; j < adapter->num_tx_queues; j++) {
225 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
226 memcpy(buf, vmxnet3_tq_dev_stats[i].desc,
227 ETH_GSTRING_LEN);
228 buf += ETH_GSTRING_LEN;
229 }
230 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats);
231 i++) {
232 memcpy(buf, vmxnet3_tq_driver_stats[i].desc,
233 ETH_GSTRING_LEN);
234 buf += ETH_GSTRING_LEN;
235 }
236 }
237
238 for (j = 0; j < adapter->num_rx_queues; j++) {
239 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
240 memcpy(buf, vmxnet3_rq_dev_stats[i].desc,
241 ETH_GSTRING_LEN);
242 buf += ETH_GSTRING_LEN;
243 }
244 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats);
245 i++) {
246 memcpy(buf, vmxnet3_rq_driver_stats[i].desc,
247 ETH_GSTRING_LEN);
248 buf += ETH_GSTRING_LEN;
249 }
250 }
251
252 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
253 memcpy(buf, vmxnet3_global_stats[i].desc,
254 ETH_GSTRING_LEN);
255 buf += ETH_GSTRING_LEN;
256 }
257 }
258 }
259
260 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 int 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
308 static void
309 vmxnet3_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 */
361 static void
362 vmxnet3_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
455 static void
456 vmxnet3_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
465 static int
466 vmxnet3_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
483 static int
484 vmxnet3_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
508 static void
509 vmxnet3_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
528 static int
529 vmxnet3_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
660 out:
661 clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
662 if (err)
663 vmxnet3_force_close(adapter);
664
665 return err;
666 }
667
668
669 static int
670 vmxnet3_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
683 static u32
684 vmxnet3_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
692 static int
693 vmxnet3_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
709 static int
710 vmxnet3_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
737 static int
738 vmxnet3_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
772 static int
773 vmxnet3_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_irq ||
784 ec->rx_max_coalesced_frames_irq ||
785 ec->tx_coalesce_usecs ||
786 ec->tx_coalesce_usecs_irq ||
787 ec->tx_max_coalesced_frames_irq ||
788 ec->stats_block_coalesce_usecs ||
789 ec->use_adaptive_tx_coalesce ||
790 ec->pkt_rate_low ||
791 ec->rx_coalesce_usecs_low ||
792 ec->rx_max_coalesced_frames_low ||
793 ec->tx_coalesce_usecs_low ||
794 ec->tx_max_coalesced_frames_low ||
795 ec->pkt_rate_high ||
796 ec->rx_coalesce_usecs_high ||
797 ec->rx_max_coalesced_frames_high ||
798 ec->tx_coalesce_usecs_high ||
799 ec->tx_max_coalesced_frames_high ||
800 ec->rate_sample_interval) {
801 return -EINVAL;
802 }
803
804 if ((ec->rx_coalesce_usecs == 0) &&
805 (ec->use_adaptive_rx_coalesce == 0) &&
806 (ec->tx_max_coalesced_frames == 0) &&
807 (ec->rx_max_coalesced_frames == 0)) {
808 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
809 adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
810 goto done;
811 }
812
813 if (ec->rx_coalesce_usecs != 0) {
814 u32 rbc_rate;
815
816 if ((ec->use_adaptive_rx_coalesce != 0) ||
817 (ec->tx_max_coalesced_frames != 0) ||
818 (ec->rx_max_coalesced_frames != 0)) {
819 return -EINVAL;
820 }
821
822 rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
823 if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
824 rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
825 return -EINVAL;
826 }
827
828 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
829 adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
830 adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
831 goto done;
832 }
833
834 if (ec->use_adaptive_rx_coalesce != 0) {
835 if ((ec->rx_coalesce_usecs != 0) ||
836 (ec->tx_max_coalesced_frames != 0) ||
837 (ec->rx_max_coalesced_frames != 0)) {
838 return -EINVAL;
839 }
840 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
841 adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
842 goto done;
843 }
844
845 if ((ec->tx_max_coalesced_frames != 0) ||
846 (ec->rx_max_coalesced_frames != 0)) {
847 if ((ec->rx_coalesce_usecs != 0) ||
848 (ec->use_adaptive_rx_coalesce != 0)) {
849 return -EINVAL;
850 }
851
852 if ((ec->tx_max_coalesced_frames >
853 VMXNET3_COAL_STATIC_MAX_DEPTH) ||
854 (ec->rx_max_coalesced_frames >
855 VMXNET3_COAL_STATIC_MAX_DEPTH)) {
856 return -EINVAL;
857 }
858
859 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
860 adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
861
862 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
863 (ec->tx_max_coalesced_frames ?
864 ec->tx_max_coalesced_frames :
865 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
866
867 adapter->coal_conf->coalPara.coalStatic.rx_depth =
868 (ec->rx_max_coalesced_frames ?
869 ec->rx_max_coalesced_frames :
870 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
871
872 adapter->coal_conf->coalPara.coalStatic.tx_depth =
873 VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
874 goto done;
875 }
876
877 done:
878 adapter->default_coal_mode = false;
879 if (netif_running(netdev)) {
880 spin_lock_irqsave(&adapter->cmd_lock, flags);
881 cmdInfo->varConf.confVer = 1;
882 cmdInfo->varConf.confLen =
883 cpu_to_le32(sizeof(*adapter->coal_conf));
884 cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa);
885 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
886 VMXNET3_CMD_SET_COALESCE);
887 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
888 }
889
890 return 0;
891 }
892
893 static const struct ethtool_ops vmxnet3_ethtool_ops = {
894 .get_drvinfo = vmxnet3_get_drvinfo,
895 .get_regs_len = vmxnet3_get_regs_len,
896 .get_regs = vmxnet3_get_regs,
897 .get_wol = vmxnet3_get_wol,
898 .set_wol = vmxnet3_set_wol,
899 .get_link = ethtool_op_get_link,
900 .get_coalesce = vmxnet3_get_coalesce,
901 .set_coalesce = vmxnet3_set_coalesce,
902 .get_strings = vmxnet3_get_strings,
903 .get_sset_count = vmxnet3_get_sset_count,
904 .get_ethtool_stats = vmxnet3_get_ethtool_stats,
905 .get_ringparam = vmxnet3_get_ringparam,
906 .set_ringparam = vmxnet3_set_ringparam,
907 .get_rxnfc = vmxnet3_get_rxnfc,
908 #ifdef VMXNET3_RSS
909 .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
910 .get_rxfh = vmxnet3_get_rss,
911 .set_rxfh = vmxnet3_set_rss,
912 #endif
913 .get_link_ksettings = vmxnet3_get_link_ksettings,
914 };
915
916 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
917 {
918 netdev->ethtool_ops = &vmxnet3_ethtool_ops;
919 }
Linux with added FPC-III support