1 /*
2 * Linux driver for VMware's vmxnet3 ethernet NIC.
3 *
4 * Copyright (C) 2008-2021, 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 #include <net/vxlan.h>
30 #include <net/geneve.h>
31
32 #define VXLAN_UDP_PORT 8472
33
34 struct vmxnet3_stat_desc {
35 char desc[ETH_GSTRING_LEN];
36 int offset;
37 };
38
39
40 /* per tq stats maintained by the device */
41 static const struct vmxnet3_stat_desc
42 vmxnet3_tq_dev_stats[] = {
43 /* description, offset */
44 { "Tx Queue#", 0 },
45 { " TSO pkts tx", offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
46 { " TSO bytes tx", offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
47 { " ucast pkts tx", offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
48 { " ucast bytes tx", offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
49 { " mcast pkts tx", offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
50 { " mcast bytes tx", offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
51 { " bcast pkts tx", offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
52 { " bcast bytes tx", offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
53 { " pkts tx err", offsetof(struct UPT1_TxStats, pktsTxError) },
54 { " pkts tx discard", offsetof(struct UPT1_TxStats, pktsTxDiscard) },
55 };
56
57 /* per tq stats maintained by the driver */
58 static const struct vmxnet3_stat_desc
59 vmxnet3_tq_driver_stats[] = {
60 /* description, offset */
61 {" drv dropped tx total", offsetof(struct vmxnet3_tq_driver_stats,
62 drop_total) },
63 { " too many frags", offsetof(struct vmxnet3_tq_driver_stats,
64 drop_too_many_frags) },
65 { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
66 drop_oversized_hdr) },
67 { " hdr err", offsetof(struct vmxnet3_tq_driver_stats,
68 drop_hdr_inspect_err) },
69 { " tso", offsetof(struct vmxnet3_tq_driver_stats,
70 drop_tso) },
71 { " ring full", offsetof(struct vmxnet3_tq_driver_stats,
72 tx_ring_full) },
73 { " pkts linearized", offsetof(struct vmxnet3_tq_driver_stats,
74 linearized) },
75 { " hdr cloned", offsetof(struct vmxnet3_tq_driver_stats,
76 copy_skb_header) },
77 { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
78 oversized_hdr) },
79 };
80
81 /* per rq stats maintained by the device */
82 static const struct vmxnet3_stat_desc
83 vmxnet3_rq_dev_stats[] = {
84 { "Rx Queue#", 0 },
85 { " LRO pkts rx", offsetof(struct UPT1_RxStats, LROPktsRxOK) },
86 { " LRO byte rx", offsetof(struct UPT1_RxStats, LROBytesRxOK) },
87 { " ucast pkts rx", offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
88 { " ucast bytes rx", offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
89 { " mcast pkts rx", offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
90 { " mcast bytes rx", offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
91 { " bcast pkts rx", offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
92 { " bcast bytes rx", offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
93 { " pkts rx OOB", offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
94 { " pkts rx err", offsetof(struct UPT1_RxStats, pktsRxError) },
95 };
96
97 /* per rq stats maintained by the driver */
98 static const struct vmxnet3_stat_desc
99 vmxnet3_rq_driver_stats[] = {
100 /* description, offset */
101 { " drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
102 drop_total) },
103 { " err", offsetof(struct vmxnet3_rq_driver_stats,
104 drop_err) },
105 { " fcs", offsetof(struct vmxnet3_rq_driver_stats,
106 drop_fcs) },
107 { " rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
108 rx_buf_alloc_failure) },
109 };
110
111 /* global stats maintained by the driver */
112 static const struct vmxnet3_stat_desc
113 vmxnet3_global_stats[] = {
114 /* description, offset */
115 { "tx timeout count", offsetof(struct vmxnet3_adapter,
116 tx_timeout_count) }
117 };
118
119
120 void
vmxnet3_get_stats64(struct net_device * netdev,struct rtnl_link_stats64 * stats)121 vmxnet3_get_stats64(struct net_device *netdev,
122 struct rtnl_link_stats64 *stats)
123 {
124 struct vmxnet3_adapter *adapter;
125 struct vmxnet3_tq_driver_stats *drvTxStats;
126 struct vmxnet3_rq_driver_stats *drvRxStats;
127 struct UPT1_TxStats *devTxStats;
128 struct UPT1_RxStats *devRxStats;
129 unsigned long flags;
130 int i;
131
132 adapter = netdev_priv(netdev);
133
134 /* Collect the dev stats into the shared area */
135 spin_lock_irqsave(&adapter->cmd_lock, flags);
136 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
137 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
138
139 for (i = 0; i < adapter->num_tx_queues; i++) {
140 devTxStats = &adapter->tqd_start[i].stats;
141 drvTxStats = &adapter->tx_queue[i].stats;
142 stats->tx_packets += devTxStats->ucastPktsTxOK +
143 devTxStats->mcastPktsTxOK +
144 devTxStats->bcastPktsTxOK;
145 stats->tx_bytes += devTxStats->ucastBytesTxOK +
146 devTxStats->mcastBytesTxOK +
147 devTxStats->bcastBytesTxOK;
148 stats->tx_errors += devTxStats->pktsTxError;
149 stats->tx_dropped += drvTxStats->drop_total;
150 }
151
152 for (i = 0; i < adapter->num_rx_queues; i++) {
153 devRxStats = &adapter->rqd_start[i].stats;
154 drvRxStats = &adapter->rx_queue[i].stats;
155 stats->rx_packets += devRxStats->ucastPktsRxOK +
156 devRxStats->mcastPktsRxOK +
157 devRxStats->bcastPktsRxOK;
158
159 stats->rx_bytes += devRxStats->ucastBytesRxOK +
160 devRxStats->mcastBytesRxOK +
161 devRxStats->bcastBytesRxOK;
162
163 stats->rx_errors += devRxStats->pktsRxError;
164 stats->rx_dropped += drvRxStats->drop_total;
165 stats->multicast += devRxStats->mcastPktsRxOK;
166 }
167 }
168
169 static int
vmxnet3_get_sset_count(struct net_device * netdev,int sset)170 vmxnet3_get_sset_count(struct net_device *netdev, int sset)
171 {
172 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
173 switch (sset) {
174 case ETH_SS_STATS:
175 return (ARRAY_SIZE(vmxnet3_tq_dev_stats) +
176 ARRAY_SIZE(vmxnet3_tq_driver_stats)) *
177 adapter->num_tx_queues +
178 (ARRAY_SIZE(vmxnet3_rq_dev_stats) +
179 ARRAY_SIZE(vmxnet3_rq_driver_stats)) *
180 adapter->num_rx_queues +
181 ARRAY_SIZE(vmxnet3_global_stats);
182 default:
183 return -EOPNOTSUPP;
184 }
185 }
186
187
188 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
189 * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
190 * Therefore, if any registers are added, removed or modified, then a version
191 * bump and a corresponding change in the vmxnet3 support for ethtool(8)
192 * --register-dump would be required.
193 */
194 static int
vmxnet3_get_regs_len(struct net_device * netdev)195 vmxnet3_get_regs_len(struct net_device *netdev)
196 {
197 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
198
199 return ((9 /* BAR1 registers */ +
200 (1 + adapter->intr.num_intrs) +
201 (1 + adapter->num_tx_queues * 17 /* Tx queue registers */) +
202 (1 + adapter->num_rx_queues * 23 /* Rx queue registers */)) *
203 sizeof(u32));
204 }
205
206
207 static void
vmxnet3_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)208 vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
209 {
210 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
211
212 strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
213
214 strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
215 sizeof(drvinfo->version));
216
217 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
218 sizeof(drvinfo->bus_info));
219 }
220
221
222 static void
vmxnet3_get_strings(struct net_device * netdev,u32 stringset,u8 * buf)223 vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
224 {
225 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
226 int i, j;
227
228 if (stringset != ETH_SS_STATS)
229 return;
230
231 for (j = 0; j < adapter->num_tx_queues; j++) {
232 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
233 ethtool_sprintf(&buf, vmxnet3_tq_dev_stats[i].desc);
234 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
235 ethtool_sprintf(&buf, vmxnet3_tq_driver_stats[i].desc);
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 ethtool_sprintf(&buf, vmxnet3_rq_dev_stats[i].desc);
241 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
242 ethtool_sprintf(&buf, vmxnet3_rq_driver_stats[i].desc);
243 }
244
245 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
246 ethtool_sprintf(&buf, vmxnet3_global_stats[i].desc);
247 }
248
vmxnet3_fix_features(struct net_device * netdev,netdev_features_t features)249 netdev_features_t vmxnet3_fix_features(struct net_device *netdev,
250 netdev_features_t features)
251 {
252 /* If Rx checksum is disabled, then LRO should also be disabled */
253 if (!(features & NETIF_F_RXCSUM))
254 features &= ~NETIF_F_LRO;
255
256 return features;
257 }
258
vmxnet3_features_check(struct sk_buff * skb,struct net_device * netdev,netdev_features_t features)259 netdev_features_t vmxnet3_features_check(struct sk_buff *skb,
260 struct net_device *netdev,
261 netdev_features_t features)
262 {
263 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
264
265 /* Validate if the tunneled packet is being offloaded by the device */
266 if (VMXNET3_VERSION_GE_4(adapter) &&
267 skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL) {
268 u8 l4_proto = 0;
269 u16 port;
270 struct udphdr *udph;
271
272 switch (vlan_get_protocol(skb)) {
273 case htons(ETH_P_IP):
274 l4_proto = ip_hdr(skb)->protocol;
275 break;
276 case htons(ETH_P_IPV6):
277 l4_proto = ipv6_hdr(skb)->nexthdr;
278 break;
279 default:
280 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
281 }
282
283 switch (l4_proto) {
284 case IPPROTO_UDP:
285 udph = udp_hdr(skb);
286 port = be16_to_cpu(udph->dest);
287 /* Check if offloaded port is supported */
288 if (port != GENEVE_UDP_PORT &&
289 port != IANA_VXLAN_UDP_PORT &&
290 port != VXLAN_UDP_PORT) {
291 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
292 }
293 break;
294 default:
295 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
296 }
297 }
298 return features;
299 }
300
vmxnet3_enable_encap_offloads(struct net_device * netdev)301 static void vmxnet3_enable_encap_offloads(struct net_device *netdev)
302 {
303 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
304
305 if (VMXNET3_VERSION_GE_4(adapter)) {
306 netdev->hw_enc_features |= NETIF_F_SG | NETIF_F_RXCSUM |
307 NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
308 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
309 NETIF_F_LRO | NETIF_F_GSO_UDP_TUNNEL |
310 NETIF_F_GSO_UDP_TUNNEL_CSUM;
311 }
312 }
313
vmxnet3_disable_encap_offloads(struct net_device * netdev)314 static void vmxnet3_disable_encap_offloads(struct net_device *netdev)
315 {
316 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
317
318 if (VMXNET3_VERSION_GE_4(adapter)) {
319 netdev->hw_enc_features &= ~(NETIF_F_SG | NETIF_F_RXCSUM |
320 NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
321 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
322 NETIF_F_LRO | NETIF_F_GSO_UDP_TUNNEL |
323 NETIF_F_GSO_UDP_TUNNEL_CSUM);
324 }
325 }
326
vmxnet3_set_features(struct net_device * netdev,netdev_features_t features)327 int vmxnet3_set_features(struct net_device *netdev, netdev_features_t features)
328 {
329 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
330 unsigned long flags;
331 netdev_features_t changed = features ^ netdev->features;
332 netdev_features_t tun_offload_mask = NETIF_F_GSO_UDP_TUNNEL |
333 NETIF_F_GSO_UDP_TUNNEL_CSUM;
334 u8 udp_tun_enabled = (netdev->features & tun_offload_mask) != 0;
335
336 if (changed & (NETIF_F_RXCSUM | NETIF_F_LRO |
337 NETIF_F_HW_VLAN_CTAG_RX | tun_offload_mask)) {
338 if (features & NETIF_F_RXCSUM)
339 adapter->shared->devRead.misc.uptFeatures |=
340 UPT1_F_RXCSUM;
341 else
342 adapter->shared->devRead.misc.uptFeatures &=
343 ~UPT1_F_RXCSUM;
344
345 /* update hardware LRO capability accordingly */
346 if (features & NETIF_F_LRO)
347 adapter->shared->devRead.misc.uptFeatures |=
348 UPT1_F_LRO;
349 else
350 adapter->shared->devRead.misc.uptFeatures &=
351 ~UPT1_F_LRO;
352
353 if (features & NETIF_F_HW_VLAN_CTAG_RX)
354 adapter->shared->devRead.misc.uptFeatures |=
355 UPT1_F_RXVLAN;
356 else
357 adapter->shared->devRead.misc.uptFeatures &=
358 ~UPT1_F_RXVLAN;
359
360 if ((features & tun_offload_mask) != 0 && !udp_tun_enabled) {
361 vmxnet3_enable_encap_offloads(netdev);
362 adapter->shared->devRead.misc.uptFeatures |=
363 UPT1_F_RXINNEROFLD;
364 } else if ((features & tun_offload_mask) == 0 &&
365 udp_tun_enabled) {
366 vmxnet3_disable_encap_offloads(netdev);
367 adapter->shared->devRead.misc.uptFeatures &=
368 ~UPT1_F_RXINNEROFLD;
369 }
370
371 spin_lock_irqsave(&adapter->cmd_lock, flags);
372 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
373 VMXNET3_CMD_UPDATE_FEATURE);
374 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
375 }
376 return 0;
377 }
378
379 static void
vmxnet3_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * buf)380 vmxnet3_get_ethtool_stats(struct net_device *netdev,
381 struct ethtool_stats *stats, u64 *buf)
382 {
383 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
384 unsigned long flags;
385 u8 *base;
386 int i;
387 int j = 0;
388
389 spin_lock_irqsave(&adapter->cmd_lock, flags);
390 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
391 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
392
393 /* this does assume each counter is 64-bit wide */
394 for (j = 0; j < adapter->num_tx_queues; j++) {
395 base = (u8 *)&adapter->tqd_start[j].stats;
396 *buf++ = (u64)j;
397 for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
398 *buf++ = *(u64 *)(base +
399 vmxnet3_tq_dev_stats[i].offset);
400
401 base = (u8 *)&adapter->tx_queue[j].stats;
402 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
403 *buf++ = *(u64 *)(base +
404 vmxnet3_tq_driver_stats[i].offset);
405 }
406
407 for (j = 0; j < adapter->num_rx_queues; j++) {
408 base = (u8 *)&adapter->rqd_start[j].stats;
409 *buf++ = (u64) j;
410 for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
411 *buf++ = *(u64 *)(base +
412 vmxnet3_rq_dev_stats[i].offset);
413
414 base = (u8 *)&adapter->rx_queue[j].stats;
415 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
416 *buf++ = *(u64 *)(base +
417 vmxnet3_rq_driver_stats[i].offset);
418 }
419
420 base = (u8 *)adapter;
421 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
422 *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
423 }
424
425
426 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
427 * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
428 * Therefore, if any registers are added, removed or modified, then a version
429 * bump and a corresponding change in the vmxnet3 support for ethtool(8)
430 * --register-dump would be required.
431 */
432 static void
vmxnet3_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)433 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
434 {
435 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
436 u32 *buf = p;
437 int i = 0, j = 0;
438
439 memset(p, 0, vmxnet3_get_regs_len(netdev));
440
441 regs->version = 2;
442
443 /* Update vmxnet3_get_regs_len if we want to dump more registers */
444
445 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
446 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
447 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAL);
448 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAH);
449 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
450 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
451 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
452 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
453 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ECR);
454
455 buf[j++] = adapter->intr.num_intrs;
456 for (i = 0; i < adapter->intr.num_intrs; i++) {
457 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_IMR
458 + i * VMXNET3_REG_ALIGN);
459 }
460
461 buf[j++] = adapter->num_tx_queues;
462 for (i = 0; i < adapter->num_tx_queues; i++) {
463 struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i];
464
465 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_TXPROD +
466 i * VMXNET3_REG_ALIGN);
467
468 buf[j++] = VMXNET3_GET_ADDR_LO(tq->tx_ring.basePA);
469 buf[j++] = VMXNET3_GET_ADDR_HI(tq->tx_ring.basePA);
470 buf[j++] = tq->tx_ring.size;
471 buf[j++] = tq->tx_ring.next2fill;
472 buf[j++] = tq->tx_ring.next2comp;
473 buf[j++] = tq->tx_ring.gen;
474
475 buf[j++] = VMXNET3_GET_ADDR_LO(tq->data_ring.basePA);
476 buf[j++] = VMXNET3_GET_ADDR_HI(tq->data_ring.basePA);
477 buf[j++] = tq->data_ring.size;
478 buf[j++] = tq->txdata_desc_size;
479
480 buf[j++] = VMXNET3_GET_ADDR_LO(tq->comp_ring.basePA);
481 buf[j++] = VMXNET3_GET_ADDR_HI(tq->comp_ring.basePA);
482 buf[j++] = tq->comp_ring.size;
483 buf[j++] = tq->comp_ring.next2proc;
484 buf[j++] = tq->comp_ring.gen;
485
486 buf[j++] = tq->stopped;
487 }
488
489 buf[j++] = adapter->num_rx_queues;
490 for (i = 0; i < adapter->num_rx_queues; i++) {
491 struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
492
493 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD +
494 i * VMXNET3_REG_ALIGN);
495 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_RXPROD2 +
496 i * VMXNET3_REG_ALIGN);
497
498 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[0].basePA);
499 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[0].basePA);
500 buf[j++] = rq->rx_ring[0].size;
501 buf[j++] = rq->rx_ring[0].next2fill;
502 buf[j++] = rq->rx_ring[0].next2comp;
503 buf[j++] = rq->rx_ring[0].gen;
504
505 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[1].basePA);
506 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[1].basePA);
507 buf[j++] = rq->rx_ring[1].size;
508 buf[j++] = rq->rx_ring[1].next2fill;
509 buf[j++] = rq->rx_ring[1].next2comp;
510 buf[j++] = rq->rx_ring[1].gen;
511
512 buf[j++] = VMXNET3_GET_ADDR_LO(rq->data_ring.basePA);
513 buf[j++] = VMXNET3_GET_ADDR_HI(rq->data_ring.basePA);
514 buf[j++] = rq->rx_ring[0].size;
515 buf[j++] = rq->data_ring.desc_size;
516
517 buf[j++] = VMXNET3_GET_ADDR_LO(rq->comp_ring.basePA);
518 buf[j++] = VMXNET3_GET_ADDR_HI(rq->comp_ring.basePA);
519 buf[j++] = rq->comp_ring.size;
520 buf[j++] = rq->comp_ring.next2proc;
521 buf[j++] = rq->comp_ring.gen;
522 }
523 }
524
525
526 static void
vmxnet3_get_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)527 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
528 {
529 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
530
531 wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
532 wol->wolopts = adapter->wol;
533 }
534
535
536 static int
vmxnet3_set_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)537 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
538 {
539 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
540
541 if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
542 WAKE_MAGICSECURE)) {
543 return -EOPNOTSUPP;
544 }
545
546 adapter->wol = wol->wolopts;
547
548 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
549
550 return 0;
551 }
552
553
554 static int
vmxnet3_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * ecmd)555 vmxnet3_get_link_ksettings(struct net_device *netdev,
556 struct ethtool_link_ksettings *ecmd)
557 {
558 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
559
560 ethtool_link_ksettings_zero_link_mode(ecmd, supported);
561 ethtool_link_ksettings_add_link_mode(ecmd, supported, 10000baseT_Full);
562 ethtool_link_ksettings_add_link_mode(ecmd, supported, 1000baseT_Full);
563 ethtool_link_ksettings_add_link_mode(ecmd, supported, TP);
564 ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
565 ethtool_link_ksettings_add_link_mode(ecmd, advertising, TP);
566 ecmd->base.port = PORT_TP;
567
568 if (adapter->link_speed) {
569 ecmd->base.speed = adapter->link_speed;
570 ecmd->base.duplex = DUPLEX_FULL;
571 } else {
572 ecmd->base.speed = SPEED_UNKNOWN;
573 ecmd->base.duplex = DUPLEX_UNKNOWN;
574 }
575 return 0;
576 }
577
578
579 static void
vmxnet3_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * param)580 vmxnet3_get_ringparam(struct net_device *netdev,
581 struct ethtool_ringparam *param)
582 {
583 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
584
585 param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
586 param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
587 param->rx_mini_max_pending = VMXNET3_VERSION_GE_3(adapter) ?
588 VMXNET3_RXDATA_DESC_MAX_SIZE : 0;
589 param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
590
591 param->rx_pending = adapter->rx_ring_size;
592 param->tx_pending = adapter->tx_ring_size;
593 param->rx_mini_pending = VMXNET3_VERSION_GE_3(adapter) ?
594 adapter->rxdata_desc_size : 0;
595 param->rx_jumbo_pending = adapter->rx_ring2_size;
596 }
597
598
599 static int
vmxnet3_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * param)600 vmxnet3_set_ringparam(struct net_device *netdev,
601 struct ethtool_ringparam *param)
602 {
603 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
604 u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
605 u16 new_rxdata_desc_size;
606 u32 sz;
607 int err = 0;
608
609 if (param->tx_pending == 0 || param->tx_pending >
610 VMXNET3_TX_RING_MAX_SIZE)
611 return -EINVAL;
612
613 if (param->rx_pending == 0 || param->rx_pending >
614 VMXNET3_RX_RING_MAX_SIZE)
615 return -EINVAL;
616
617 if (param->rx_jumbo_pending == 0 ||
618 param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
619 return -EINVAL;
620
621 /* if adapter not yet initialized, do nothing */
622 if (adapter->rx_buf_per_pkt == 0) {
623 netdev_err(netdev, "adapter not completely initialized, "
624 "ring size cannot be changed yet\n");
625 return -EOPNOTSUPP;
626 }
627
628 if (VMXNET3_VERSION_GE_3(adapter)) {
629 if (param->rx_mini_pending > VMXNET3_RXDATA_DESC_MAX_SIZE)
630 return -EINVAL;
631 } else if (param->rx_mini_pending != 0) {
632 return -EINVAL;
633 }
634
635 /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
636 new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
637 ~VMXNET3_RING_SIZE_MASK;
638 new_tx_ring_size = min_t(u32, new_tx_ring_size,
639 VMXNET3_TX_RING_MAX_SIZE);
640 if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
641 VMXNET3_RING_SIZE_ALIGN) != 0)
642 return -EINVAL;
643
644 /* ring0 has to be a multiple of
645 * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
646 */
647 sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
648 new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
649 new_rx_ring_size = min_t(u32, new_rx_ring_size,
650 VMXNET3_RX_RING_MAX_SIZE / sz * sz);
651 if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
652 sz) != 0)
653 return -EINVAL;
654
655 /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
656 new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
657 ~VMXNET3_RING_SIZE_MASK;
658 new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
659 VMXNET3_RX_RING2_MAX_SIZE);
660
661 /* rx data ring buffer size has to be a multiple of
662 * VMXNET3_RXDATA_DESC_SIZE_ALIGN
663 */
664 new_rxdata_desc_size =
665 (param->rx_mini_pending + VMXNET3_RXDATA_DESC_SIZE_MASK) &
666 ~VMXNET3_RXDATA_DESC_SIZE_MASK;
667 new_rxdata_desc_size = min_t(u16, new_rxdata_desc_size,
668 VMXNET3_RXDATA_DESC_MAX_SIZE);
669
670 if (new_tx_ring_size == adapter->tx_ring_size &&
671 new_rx_ring_size == adapter->rx_ring_size &&
672 new_rx_ring2_size == adapter->rx_ring2_size &&
673 new_rxdata_desc_size == adapter->rxdata_desc_size) {
674 return 0;
675 }
676
677 /*
678 * Reset_work may be in the middle of resetting the device, wait for its
679 * completion.
680 */
681 while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
682 usleep_range(1000, 2000);
683
684 if (netif_running(netdev)) {
685 vmxnet3_quiesce_dev(adapter);
686 vmxnet3_reset_dev(adapter);
687
688 /* recreate the rx queue and the tx queue based on the
689 * new sizes */
690 vmxnet3_tq_destroy_all(adapter);
691 vmxnet3_rq_destroy_all(adapter);
692
693 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
694 new_rx_ring_size, new_rx_ring2_size,
695 adapter->txdata_desc_size,
696 new_rxdata_desc_size);
697 if (err) {
698 /* failed, most likely because of OOM, try default
699 * size */
700 netdev_err(netdev, "failed to apply new sizes, "
701 "try the default ones\n");
702 new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
703 new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
704 new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
705 new_rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
706 VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
707
708 err = vmxnet3_create_queues(adapter,
709 new_tx_ring_size,
710 new_rx_ring_size,
711 new_rx_ring2_size,
712 adapter->txdata_desc_size,
713 new_rxdata_desc_size);
714 if (err) {
715 netdev_err(netdev, "failed to create queues "
716 "with default sizes. Closing it\n");
717 goto out;
718 }
719 }
720
721 err = vmxnet3_activate_dev(adapter);
722 if (err)
723 netdev_err(netdev, "failed to re-activate, error %d."
724 " Closing it\n", err);
725 }
726 adapter->tx_ring_size = new_tx_ring_size;
727 adapter->rx_ring_size = new_rx_ring_size;
728 adapter->rx_ring2_size = new_rx_ring2_size;
729 adapter->rxdata_desc_size = new_rxdata_desc_size;
730
731 out:
732 clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
733 if (err)
734 vmxnet3_force_close(adapter);
735
736 return err;
737 }
738
739 static int
vmxnet3_get_rss_hash_opts(struct vmxnet3_adapter * adapter,struct ethtool_rxnfc * info)740 vmxnet3_get_rss_hash_opts(struct vmxnet3_adapter *adapter,
741 struct ethtool_rxnfc *info)
742 {
743 enum Vmxnet3_RSSField rss_fields;
744
745 if (netif_running(adapter->netdev)) {
746 unsigned long flags;
747
748 spin_lock_irqsave(&adapter->cmd_lock, flags);
749
750 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
751 VMXNET3_CMD_GET_RSS_FIELDS);
752 rss_fields = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
753 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
754 } else {
755 rss_fields = adapter->rss_fields;
756 }
757
758 info->data = 0;
759
760 /* Report default options for RSS on vmxnet3 */
761 switch (info->flow_type) {
762 case TCP_V4_FLOW:
763 case TCP_V6_FLOW:
764 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3 |
765 RXH_IP_SRC | RXH_IP_DST;
766 break;
767 case UDP_V4_FLOW:
768 if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP4)
769 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
770 info->data |= RXH_IP_SRC | RXH_IP_DST;
771 break;
772 case AH_ESP_V4_FLOW:
773 case AH_V4_FLOW:
774 case ESP_V4_FLOW:
775 if (rss_fields & VMXNET3_RSS_FIELDS_ESPIP4)
776 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
777 fallthrough;
778 case SCTP_V4_FLOW:
779 case IPV4_FLOW:
780 info->data |= RXH_IP_SRC | RXH_IP_DST;
781 break;
782 case UDP_V6_FLOW:
783 if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP6)
784 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
785 info->data |= RXH_IP_SRC | RXH_IP_DST;
786 break;
787 case AH_ESP_V6_FLOW:
788 case AH_V6_FLOW:
789 case ESP_V6_FLOW:
790 if (VMXNET3_VERSION_GE_6(adapter) &&
791 (rss_fields & VMXNET3_RSS_FIELDS_ESPIP6))
792 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
793 fallthrough;
794 case SCTP_V6_FLOW:
795 case IPV6_FLOW:
796 info->data |= RXH_IP_SRC | RXH_IP_DST;
797 break;
798 default:
799 return -EINVAL;
800 }
801
802 return 0;
803 }
804
805 static int
vmxnet3_set_rss_hash_opt(struct net_device * netdev,struct vmxnet3_adapter * adapter,struct ethtool_rxnfc * nfc)806 vmxnet3_set_rss_hash_opt(struct net_device *netdev,
807 struct vmxnet3_adapter *adapter,
808 struct ethtool_rxnfc *nfc)
809 {
810 enum Vmxnet3_RSSField rss_fields = adapter->rss_fields;
811
812 /* RSS does not support anything other than hashing
813 * to queues on src and dst IPs and ports
814 */
815 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
816 RXH_L4_B_0_1 | RXH_L4_B_2_3))
817 return -EINVAL;
818
819 switch (nfc->flow_type) {
820 case TCP_V4_FLOW:
821 case TCP_V6_FLOW:
822 if (!(nfc->data & RXH_IP_SRC) ||
823 !(nfc->data & RXH_IP_DST) ||
824 !(nfc->data & RXH_L4_B_0_1) ||
825 !(nfc->data & RXH_L4_B_2_3))
826 return -EINVAL;
827 break;
828 case UDP_V4_FLOW:
829 if (!(nfc->data & RXH_IP_SRC) ||
830 !(nfc->data & RXH_IP_DST))
831 return -EINVAL;
832 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
833 case 0:
834 rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP4;
835 break;
836 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
837 rss_fields |= VMXNET3_RSS_FIELDS_UDPIP4;
838 break;
839 default:
840 return -EINVAL;
841 }
842 break;
843 case UDP_V6_FLOW:
844 if (!(nfc->data & RXH_IP_SRC) ||
845 !(nfc->data & RXH_IP_DST))
846 return -EINVAL;
847 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
848 case 0:
849 rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP6;
850 break;
851 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
852 rss_fields |= VMXNET3_RSS_FIELDS_UDPIP6;
853 break;
854 default:
855 return -EINVAL;
856 }
857 break;
858 case ESP_V4_FLOW:
859 case AH_V4_FLOW:
860 case AH_ESP_V4_FLOW:
861 if (!(nfc->data & RXH_IP_SRC) ||
862 !(nfc->data & RXH_IP_DST))
863 return -EINVAL;
864 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
865 case 0:
866 rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP4;
867 break;
868 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
869 rss_fields |= VMXNET3_RSS_FIELDS_ESPIP4;
870 break;
871 default:
872 return -EINVAL;
873 }
874 break;
875 case ESP_V6_FLOW:
876 case AH_V6_FLOW:
877 case AH_ESP_V6_FLOW:
878 if (!VMXNET3_VERSION_GE_6(adapter))
879 return -EOPNOTSUPP;
880 if (!(nfc->data & RXH_IP_SRC) ||
881 !(nfc->data & RXH_IP_DST))
882 return -EINVAL;
883 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
884 case 0:
885 rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP6;
886 break;
887 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
888 rss_fields |= VMXNET3_RSS_FIELDS_ESPIP6;
889 break;
890 default:
891 return -EINVAL;
892 }
893 break;
894 case SCTP_V4_FLOW:
895 case SCTP_V6_FLOW:
896 if (!(nfc->data & RXH_IP_SRC) ||
897 !(nfc->data & RXH_IP_DST) ||
898 (nfc->data & RXH_L4_B_0_1) ||
899 (nfc->data & RXH_L4_B_2_3))
900 return -EINVAL;
901 break;
902 default:
903 return -EINVAL;
904 }
905
906 /* if we changed something we need to update flags */
907 if (rss_fields != adapter->rss_fields) {
908 adapter->default_rss_fields = false;
909 if (netif_running(netdev)) {
910 struct Vmxnet3_DriverShared *shared = adapter->shared;
911 union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
912 unsigned long flags;
913
914 spin_lock_irqsave(&adapter->cmd_lock, flags);
915 cmdInfo->setRssFields = rss_fields;
916 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
917 VMXNET3_CMD_SET_RSS_FIELDS);
918
919 /* Not all requested RSS may get applied, so get and
920 * cache what was actually applied.
921 */
922 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
923 VMXNET3_CMD_GET_RSS_FIELDS);
924 adapter->rss_fields =
925 VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
926 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
927 } else {
928 /* When the device is activated, we will try to apply
929 * these rules and cache the applied value later.
930 */
931 adapter->rss_fields = rss_fields;
932 }
933 }
934 return 0;
935 }
936
937 static int
vmxnet3_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info,u32 * rules)938 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
939 u32 *rules)
940 {
941 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
942 int err = 0;
943
944 switch (info->cmd) {
945 case ETHTOOL_GRXRINGS:
946 info->data = adapter->num_rx_queues;
947 break;
948 case ETHTOOL_GRXFH:
949 if (!VMXNET3_VERSION_GE_4(adapter)) {
950 err = -EOPNOTSUPP;
951 break;
952 }
953 #ifdef VMXNET3_RSS
954 if (!adapter->rss) {
955 err = -EOPNOTSUPP;
956 break;
957 }
958 #endif
959 err = vmxnet3_get_rss_hash_opts(adapter, info);
960 break;
961 default:
962 err = -EOPNOTSUPP;
963 break;
964 }
965
966 return err;
967 }
968
969 static int
vmxnet3_set_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info)970 vmxnet3_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
971 {
972 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
973 int err = 0;
974
975 if (!VMXNET3_VERSION_GE_4(adapter)) {
976 err = -EOPNOTSUPP;
977 goto done;
978 }
979 #ifdef VMXNET3_RSS
980 if (!adapter->rss) {
981 err = -EOPNOTSUPP;
982 goto done;
983 }
984 #endif
985
986 switch (info->cmd) {
987 case ETHTOOL_SRXFH:
988 err = vmxnet3_set_rss_hash_opt(netdev, adapter, info);
989 break;
990 default:
991 err = -EOPNOTSUPP;
992 break;
993 }
994
995 done:
996 return err;
997 }
998
999 #ifdef VMXNET3_RSS
1000 static u32
vmxnet3_get_rss_indir_size(struct net_device * netdev)1001 vmxnet3_get_rss_indir_size(struct net_device *netdev)
1002 {
1003 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1004 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1005
1006 return rssConf->indTableSize;
1007 }
1008
1009 static int
vmxnet3_get_rss(struct net_device * netdev,u32 * p,u8 * key,u8 * hfunc)1010 vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
1011 {
1012 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1013 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1014 unsigned int n = rssConf->indTableSize;
1015
1016 if (hfunc)
1017 *hfunc = ETH_RSS_HASH_TOP;
1018 if (!p)
1019 return 0;
1020 if (n > UPT1_RSS_MAX_IND_TABLE_SIZE)
1021 return 0;
1022 while (n--)
1023 p[n] = rssConf->indTable[n];
1024 return 0;
1025
1026 }
1027
1028 static int
vmxnet3_set_rss(struct net_device * netdev,const u32 * p,const u8 * key,const u8 hfunc)1029 vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
1030 const u8 hfunc)
1031 {
1032 unsigned int i;
1033 unsigned long flags;
1034 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1035 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1036
1037 /* We do not allow change in unsupported parameters */
1038 if (key ||
1039 (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
1040 return -EOPNOTSUPP;
1041 if (!p)
1042 return 0;
1043 for (i = 0; i < rssConf->indTableSize; i++)
1044 rssConf->indTable[i] = p[i];
1045
1046 spin_lock_irqsave(&adapter->cmd_lock, flags);
1047 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1048 VMXNET3_CMD_UPDATE_RSSIDT);
1049 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1050
1051 return 0;
1052
1053 }
1054 #endif
1055
vmxnet3_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)1056 static int vmxnet3_get_coalesce(struct net_device *netdev,
1057 struct ethtool_coalesce *ec,
1058 struct kernel_ethtool_coalesce *kernel_coal,
1059 struct netlink_ext_ack *extack)
1060 {
1061 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1062
1063 if (!VMXNET3_VERSION_GE_3(adapter))
1064 return -EOPNOTSUPP;
1065
1066 switch (adapter->coal_conf->coalMode) {
1067 case VMXNET3_COALESCE_DISABLED:
1068 /* struct ethtool_coalesce is already initialized to 0 */
1069 break;
1070 case VMXNET3_COALESCE_ADAPT:
1071 ec->use_adaptive_rx_coalesce = true;
1072 break;
1073 case VMXNET3_COALESCE_STATIC:
1074 ec->tx_max_coalesced_frames =
1075 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth;
1076 ec->rx_max_coalesced_frames =
1077 adapter->coal_conf->coalPara.coalStatic.rx_depth;
1078 break;
1079 case VMXNET3_COALESCE_RBC: {
1080 u32 rbc_rate;
1081
1082 rbc_rate = adapter->coal_conf->coalPara.coalRbc.rbc_rate;
1083 ec->rx_coalesce_usecs = VMXNET3_COAL_RBC_USECS(rbc_rate);
1084 }
1085 break;
1086 default:
1087 return -EOPNOTSUPP;
1088 }
1089
1090 return 0;
1091 }
1092
vmxnet3_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)1093 static int vmxnet3_set_coalesce(struct net_device *netdev,
1094 struct ethtool_coalesce *ec,
1095 struct kernel_ethtool_coalesce *kernel_coal,
1096 struct netlink_ext_ack *extack)
1097 {
1098 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1099 struct Vmxnet3_DriverShared *shared = adapter->shared;
1100 union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
1101 unsigned long flags;
1102
1103 if (!VMXNET3_VERSION_GE_3(adapter))
1104 return -EOPNOTSUPP;
1105
1106 if ((ec->rx_coalesce_usecs == 0) &&
1107 (ec->use_adaptive_rx_coalesce == 0) &&
1108 (ec->tx_max_coalesced_frames == 0) &&
1109 (ec->rx_max_coalesced_frames == 0)) {
1110 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1111 adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
1112 goto done;
1113 }
1114
1115 if (ec->rx_coalesce_usecs != 0) {
1116 u32 rbc_rate;
1117
1118 if ((ec->use_adaptive_rx_coalesce != 0) ||
1119 (ec->tx_max_coalesced_frames != 0) ||
1120 (ec->rx_max_coalesced_frames != 0)) {
1121 return -EINVAL;
1122 }
1123
1124 rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
1125 if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
1126 rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
1127 return -EINVAL;
1128 }
1129
1130 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1131 adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
1132 adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
1133 goto done;
1134 }
1135
1136 if (ec->use_adaptive_rx_coalesce != 0) {
1137 if ((ec->rx_coalesce_usecs != 0) ||
1138 (ec->tx_max_coalesced_frames != 0) ||
1139 (ec->rx_max_coalesced_frames != 0)) {
1140 return -EINVAL;
1141 }
1142 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1143 adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
1144 goto done;
1145 }
1146
1147 if ((ec->tx_max_coalesced_frames != 0) ||
1148 (ec->rx_max_coalesced_frames != 0)) {
1149 if ((ec->rx_coalesce_usecs != 0) ||
1150 (ec->use_adaptive_rx_coalesce != 0)) {
1151 return -EINVAL;
1152 }
1153
1154 if ((ec->tx_max_coalesced_frames >
1155 VMXNET3_COAL_STATIC_MAX_DEPTH) ||
1156 (ec->rx_max_coalesced_frames >
1157 VMXNET3_COAL_STATIC_MAX_DEPTH)) {
1158 return -EINVAL;
1159 }
1160
1161 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1162 adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
1163
1164 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
1165 (ec->tx_max_coalesced_frames ?
1166 ec->tx_max_coalesced_frames :
1167 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
1168
1169 adapter->coal_conf->coalPara.coalStatic.rx_depth =
1170 (ec->rx_max_coalesced_frames ?
1171 ec->rx_max_coalesced_frames :
1172 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
1173
1174 adapter->coal_conf->coalPara.coalStatic.tx_depth =
1175 VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
1176 goto done;
1177 }
1178
1179 done:
1180 adapter->default_coal_mode = false;
1181 if (netif_running(netdev)) {
1182 spin_lock_irqsave(&adapter->cmd_lock, flags);
1183 cmdInfo->varConf.confVer = 1;
1184 cmdInfo->varConf.confLen =
1185 cpu_to_le32(sizeof(*adapter->coal_conf));
1186 cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa);
1187 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1188 VMXNET3_CMD_SET_COALESCE);
1189 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1190 }
1191
1192 return 0;
1193 }
1194
1195 static const struct ethtool_ops vmxnet3_ethtool_ops = {
1196 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
1197 ETHTOOL_COALESCE_MAX_FRAMES |
1198 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
1199 .get_drvinfo = vmxnet3_get_drvinfo,
1200 .get_regs_len = vmxnet3_get_regs_len,
1201 .get_regs = vmxnet3_get_regs,
1202 .get_wol = vmxnet3_get_wol,
1203 .set_wol = vmxnet3_set_wol,
1204 .get_link = ethtool_op_get_link,
1205 .get_coalesce = vmxnet3_get_coalesce,
1206 .set_coalesce = vmxnet3_set_coalesce,
1207 .get_strings = vmxnet3_get_strings,
1208 .get_sset_count = vmxnet3_get_sset_count,
1209 .get_ethtool_stats = vmxnet3_get_ethtool_stats,
1210 .get_ringparam = vmxnet3_get_ringparam,
1211 .set_ringparam = vmxnet3_set_ringparam,
1212 .get_rxnfc = vmxnet3_get_rxnfc,
1213 .set_rxnfc = vmxnet3_set_rxnfc,
1214 #ifdef VMXNET3_RSS
1215 .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
1216 .get_rxfh = vmxnet3_get_rss,
1217 .set_rxfh = vmxnet3_set_rss,
1218 #endif
1219 .get_link_ksettings = vmxnet3_get_link_ksettings,
1220 };
1221
vmxnet3_set_ethtool_ops(struct net_device * netdev)1222 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
1223 {
1224 netdev->ethtool_ops = &vmxnet3_ethtool_ops;
1225 }
1226