1 /*
2 * Linux driver for VMware's vmxnet3 ethernet NIC.
3 *
4 * Copyright (C) 2008-2022, 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 strscpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
213
214 strscpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
215 sizeof(drvinfo->version));
216
217 strscpy(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,netdev_features_t features)301 static void vmxnet3_enable_encap_offloads(struct net_device *netdev, netdev_features_t features)
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;
310 if (features & NETIF_F_GSO_UDP_TUNNEL)
311 netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL;
312 if (features & NETIF_F_GSO_UDP_TUNNEL_CSUM)
313 netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
314 }
315 if (VMXNET3_VERSION_GE_7(adapter)) {
316 unsigned long flags;
317
318 if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
319 VMXNET3_CAP_GENEVE_CHECKSUM_OFFLOAD)) {
320 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_GENEVE_CHECKSUM_OFFLOAD;
321 }
322 if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
323 VMXNET3_CAP_VXLAN_CHECKSUM_OFFLOAD)) {
324 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_VXLAN_CHECKSUM_OFFLOAD;
325 }
326 if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
327 VMXNET3_CAP_GENEVE_TSO)) {
328 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_GENEVE_TSO;
329 }
330 if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
331 VMXNET3_CAP_VXLAN_TSO)) {
332 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_VXLAN_TSO;
333 }
334 if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
335 VMXNET3_CAP_GENEVE_OUTER_CHECKSUM_OFFLOAD)) {
336 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_GENEVE_OUTER_CHECKSUM_OFFLOAD;
337 }
338 if (vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
339 VMXNET3_CAP_VXLAN_OUTER_CHECKSUM_OFFLOAD)) {
340 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_VXLAN_OUTER_CHECKSUM_OFFLOAD;
341 }
342
343 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DCR, adapter->dev_caps[0]);
344 spin_lock_irqsave(&adapter->cmd_lock, flags);
345 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_DCR0_REG);
346 adapter->dev_caps[0] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
347 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
348
349 if (!(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_GENEVE_CHECKSUM_OFFLOAD)) &&
350 !(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_VXLAN_CHECKSUM_OFFLOAD)) &&
351 !(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_GENEVE_TSO)) &&
352 !(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_VXLAN_TSO))) {
353 netdev->hw_enc_features &= ~NETIF_F_GSO_UDP_TUNNEL;
354 }
355 if (!(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_GENEVE_OUTER_CHECKSUM_OFFLOAD)) &&
356 !(adapter->dev_caps[0] & (1UL << VMXNET3_CAP_VXLAN_OUTER_CHECKSUM_OFFLOAD))) {
357 netdev->hw_enc_features &= ~NETIF_F_GSO_UDP_TUNNEL_CSUM;
358 }
359 }
360 }
361
vmxnet3_disable_encap_offloads(struct net_device * netdev)362 static void vmxnet3_disable_encap_offloads(struct net_device *netdev)
363 {
364 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
365
366 if (VMXNET3_VERSION_GE_4(adapter)) {
367 netdev->hw_enc_features &= ~(NETIF_F_SG | NETIF_F_RXCSUM |
368 NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
369 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 |
370 NETIF_F_LRO | NETIF_F_GSO_UDP_TUNNEL |
371 NETIF_F_GSO_UDP_TUNNEL_CSUM);
372 }
373 if (VMXNET3_VERSION_GE_7(adapter)) {
374 unsigned long flags;
375
376 adapter->dev_caps[0] &= ~(1UL << VMXNET3_CAP_GENEVE_CHECKSUM_OFFLOAD |
377 1UL << VMXNET3_CAP_VXLAN_CHECKSUM_OFFLOAD |
378 1UL << VMXNET3_CAP_GENEVE_TSO |
379 1UL << VMXNET3_CAP_VXLAN_TSO |
380 1UL << VMXNET3_CAP_GENEVE_OUTER_CHECKSUM_OFFLOAD |
381 1UL << VMXNET3_CAP_VXLAN_OUTER_CHECKSUM_OFFLOAD);
382
383 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DCR, adapter->dev_caps[0]);
384 spin_lock_irqsave(&adapter->cmd_lock, flags);
385 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_DCR0_REG);
386 adapter->dev_caps[0] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
387 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
388 }
389 }
390
vmxnet3_set_features(struct net_device * netdev,netdev_features_t features)391 int vmxnet3_set_features(struct net_device *netdev, netdev_features_t features)
392 {
393 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
394 unsigned long flags;
395 netdev_features_t changed = features ^ netdev->features;
396 netdev_features_t tun_offload_mask = NETIF_F_GSO_UDP_TUNNEL |
397 NETIF_F_GSO_UDP_TUNNEL_CSUM;
398 u8 udp_tun_enabled = (netdev->features & tun_offload_mask) != 0;
399
400 if (changed & (NETIF_F_RXCSUM | NETIF_F_LRO |
401 NETIF_F_HW_VLAN_CTAG_RX | tun_offload_mask)) {
402 if (features & NETIF_F_RXCSUM)
403 adapter->shared->devRead.misc.uptFeatures |=
404 UPT1_F_RXCSUM;
405 else
406 adapter->shared->devRead.misc.uptFeatures &=
407 ~UPT1_F_RXCSUM;
408
409 /* update hardware LRO capability accordingly */
410 if (features & NETIF_F_LRO)
411 adapter->shared->devRead.misc.uptFeatures |=
412 UPT1_F_LRO;
413 else
414 adapter->shared->devRead.misc.uptFeatures &=
415 ~UPT1_F_LRO;
416
417 if (features & NETIF_F_HW_VLAN_CTAG_RX)
418 adapter->shared->devRead.misc.uptFeatures |=
419 UPT1_F_RXVLAN;
420 else
421 adapter->shared->devRead.misc.uptFeatures &=
422 ~UPT1_F_RXVLAN;
423
424 if ((features & tun_offload_mask) != 0) {
425 vmxnet3_enable_encap_offloads(netdev, features);
426 adapter->shared->devRead.misc.uptFeatures |=
427 UPT1_F_RXINNEROFLD;
428 } else if ((features & tun_offload_mask) == 0 &&
429 udp_tun_enabled) {
430 vmxnet3_disable_encap_offloads(netdev);
431 adapter->shared->devRead.misc.uptFeatures &=
432 ~UPT1_F_RXINNEROFLD;
433 }
434
435 spin_lock_irqsave(&adapter->cmd_lock, flags);
436 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
437 VMXNET3_CMD_UPDATE_FEATURE);
438 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
439 }
440 return 0;
441 }
442
443 static void
vmxnet3_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * buf)444 vmxnet3_get_ethtool_stats(struct net_device *netdev,
445 struct ethtool_stats *stats, u64 *buf)
446 {
447 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
448 unsigned long flags;
449 u8 *base;
450 int i;
451 int j = 0;
452
453 spin_lock_irqsave(&adapter->cmd_lock, flags);
454 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
455 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
456
457 /* this does assume each counter is 64-bit wide */
458 for (j = 0; j < adapter->num_tx_queues; j++) {
459 base = (u8 *)&adapter->tqd_start[j].stats;
460 *buf++ = (u64)j;
461 for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
462 *buf++ = *(u64 *)(base +
463 vmxnet3_tq_dev_stats[i].offset);
464
465 base = (u8 *)&adapter->tx_queue[j].stats;
466 for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
467 *buf++ = *(u64 *)(base +
468 vmxnet3_tq_driver_stats[i].offset);
469 }
470
471 for (j = 0; j < adapter->num_rx_queues; j++) {
472 base = (u8 *)&adapter->rqd_start[j].stats;
473 *buf++ = (u64) j;
474 for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
475 *buf++ = *(u64 *)(base +
476 vmxnet3_rq_dev_stats[i].offset);
477
478 base = (u8 *)&adapter->rx_queue[j].stats;
479 for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
480 *buf++ = *(u64 *)(base +
481 vmxnet3_rq_driver_stats[i].offset);
482 }
483
484 base = (u8 *)adapter;
485 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
486 *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
487 }
488
489
490 /* This is a version 2 of the vmxnet3 ethtool_regs which goes hand in hand with
491 * the version 2 of the vmxnet3 support for ethtool(8) --register-dump.
492 * Therefore, if any registers are added, removed or modified, then a version
493 * bump and a corresponding change in the vmxnet3 support for ethtool(8)
494 * --register-dump would be required.
495 */
496 static void
vmxnet3_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)497 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
498 {
499 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
500 u32 *buf = p;
501 int i = 0, j = 0;
502
503 memset(p, 0, vmxnet3_get_regs_len(netdev));
504
505 regs->version = 2;
506
507 /* Update vmxnet3_get_regs_len if we want to dump more registers */
508
509 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
510 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
511 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAL);
512 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_DSAH);
513 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
514 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
515 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
516 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
517 buf[j++] = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ECR);
518
519 buf[j++] = adapter->intr.num_intrs;
520 for (i = 0; i < adapter->intr.num_intrs; i++) {
521 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_IMR
522 + i * VMXNET3_REG_ALIGN);
523 }
524
525 buf[j++] = adapter->num_tx_queues;
526 for (i = 0; i < adapter->num_tx_queues; i++) {
527 struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i];
528
529 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, adapter->tx_prod_offset +
530 i * VMXNET3_REG_ALIGN);
531
532 buf[j++] = VMXNET3_GET_ADDR_LO(tq->tx_ring.basePA);
533 buf[j++] = VMXNET3_GET_ADDR_HI(tq->tx_ring.basePA);
534 buf[j++] = tq->tx_ring.size;
535 buf[j++] = tq->tx_ring.next2fill;
536 buf[j++] = tq->tx_ring.next2comp;
537 buf[j++] = tq->tx_ring.gen;
538
539 buf[j++] = VMXNET3_GET_ADDR_LO(tq->data_ring.basePA);
540 buf[j++] = VMXNET3_GET_ADDR_HI(tq->data_ring.basePA);
541 buf[j++] = tq->data_ring.size;
542 buf[j++] = tq->txdata_desc_size;
543
544 buf[j++] = VMXNET3_GET_ADDR_LO(tq->comp_ring.basePA);
545 buf[j++] = VMXNET3_GET_ADDR_HI(tq->comp_ring.basePA);
546 buf[j++] = tq->comp_ring.size;
547 buf[j++] = tq->comp_ring.next2proc;
548 buf[j++] = tq->comp_ring.gen;
549
550 buf[j++] = tq->stopped;
551 }
552
553 buf[j++] = adapter->num_rx_queues;
554 for (i = 0; i < adapter->num_rx_queues; i++) {
555 struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i];
556
557 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, adapter->rx_prod_offset +
558 i * VMXNET3_REG_ALIGN);
559 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, adapter->rx_prod2_offset +
560 i * VMXNET3_REG_ALIGN);
561
562 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[0].basePA);
563 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[0].basePA);
564 buf[j++] = rq->rx_ring[0].size;
565 buf[j++] = rq->rx_ring[0].next2fill;
566 buf[j++] = rq->rx_ring[0].next2comp;
567 buf[j++] = rq->rx_ring[0].gen;
568
569 buf[j++] = VMXNET3_GET_ADDR_LO(rq->rx_ring[1].basePA);
570 buf[j++] = VMXNET3_GET_ADDR_HI(rq->rx_ring[1].basePA);
571 buf[j++] = rq->rx_ring[1].size;
572 buf[j++] = rq->rx_ring[1].next2fill;
573 buf[j++] = rq->rx_ring[1].next2comp;
574 buf[j++] = rq->rx_ring[1].gen;
575
576 buf[j++] = VMXNET3_GET_ADDR_LO(rq->data_ring.basePA);
577 buf[j++] = VMXNET3_GET_ADDR_HI(rq->data_ring.basePA);
578 buf[j++] = rq->rx_ring[0].size;
579 buf[j++] = rq->data_ring.desc_size;
580
581 buf[j++] = VMXNET3_GET_ADDR_LO(rq->comp_ring.basePA);
582 buf[j++] = VMXNET3_GET_ADDR_HI(rq->comp_ring.basePA);
583 buf[j++] = rq->comp_ring.size;
584 buf[j++] = rq->comp_ring.next2proc;
585 buf[j++] = rq->comp_ring.gen;
586 }
587 }
588
589
590 static void
vmxnet3_get_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)591 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
592 {
593 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
594
595 wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
596 wol->wolopts = adapter->wol;
597 }
598
599
600 static int
vmxnet3_set_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)601 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
602 {
603 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
604
605 if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
606 WAKE_MAGICSECURE)) {
607 return -EOPNOTSUPP;
608 }
609
610 adapter->wol = wol->wolopts;
611
612 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
613
614 return 0;
615 }
616
617
618 static int
vmxnet3_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * ecmd)619 vmxnet3_get_link_ksettings(struct net_device *netdev,
620 struct ethtool_link_ksettings *ecmd)
621 {
622 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
623
624 ethtool_link_ksettings_zero_link_mode(ecmd, supported);
625 ethtool_link_ksettings_add_link_mode(ecmd, supported, 10000baseT_Full);
626 ethtool_link_ksettings_add_link_mode(ecmd, supported, 1000baseT_Full);
627 ethtool_link_ksettings_add_link_mode(ecmd, supported, TP);
628 ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
629 ethtool_link_ksettings_add_link_mode(ecmd, advertising, TP);
630 ecmd->base.port = PORT_TP;
631
632 if (adapter->link_speed) {
633 ecmd->base.speed = adapter->link_speed;
634 ecmd->base.duplex = DUPLEX_FULL;
635 } else {
636 ecmd->base.speed = SPEED_UNKNOWN;
637 ecmd->base.duplex = DUPLEX_UNKNOWN;
638 }
639 return 0;
640 }
641
642 static void
vmxnet3_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * param,struct kernel_ethtool_ringparam * kernel_param,struct netlink_ext_ack * extack)643 vmxnet3_get_ringparam(struct net_device *netdev,
644 struct ethtool_ringparam *param,
645 struct kernel_ethtool_ringparam *kernel_param,
646 struct netlink_ext_ack *extack)
647 {
648 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
649
650 param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
651 param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
652 param->rx_mini_max_pending = VMXNET3_VERSION_GE_3(adapter) ?
653 VMXNET3_RXDATA_DESC_MAX_SIZE : 0;
654 param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
655
656 param->rx_pending = adapter->rx_ring_size;
657 param->tx_pending = adapter->tx_ring_size;
658 param->rx_mini_pending = VMXNET3_VERSION_GE_3(adapter) ?
659 adapter->rxdata_desc_size : 0;
660 param->rx_jumbo_pending = adapter->rx_ring2_size;
661 }
662
663 static int
vmxnet3_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * param,struct kernel_ethtool_ringparam * kernel_param,struct netlink_ext_ack * extack)664 vmxnet3_set_ringparam(struct net_device *netdev,
665 struct ethtool_ringparam *param,
666 struct kernel_ethtool_ringparam *kernel_param,
667 struct netlink_ext_ack *extack)
668 {
669 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
670 u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
671 u16 new_rxdata_desc_size;
672 u32 sz;
673 int err = 0;
674
675 if (param->tx_pending == 0 || param->tx_pending >
676 VMXNET3_TX_RING_MAX_SIZE)
677 return -EINVAL;
678
679 if (param->rx_pending == 0 || param->rx_pending >
680 VMXNET3_RX_RING_MAX_SIZE)
681 return -EINVAL;
682
683 if (param->rx_jumbo_pending == 0 ||
684 param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
685 return -EINVAL;
686
687 /* if adapter not yet initialized, do nothing */
688 if (adapter->rx_buf_per_pkt == 0) {
689 netdev_err(netdev, "adapter not completely initialized, "
690 "ring size cannot be changed yet\n");
691 return -EOPNOTSUPP;
692 }
693
694 if (VMXNET3_VERSION_GE_3(adapter)) {
695 if (param->rx_mini_pending > VMXNET3_RXDATA_DESC_MAX_SIZE)
696 return -EINVAL;
697 } else if (param->rx_mini_pending != 0) {
698 return -EINVAL;
699 }
700
701 /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
702 new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
703 ~VMXNET3_RING_SIZE_MASK;
704 new_tx_ring_size = min_t(u32, new_tx_ring_size,
705 VMXNET3_TX_RING_MAX_SIZE);
706 if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
707 VMXNET3_RING_SIZE_ALIGN) != 0)
708 return -EINVAL;
709
710 /* ring0 has to be a multiple of
711 * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
712 */
713 sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
714 new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
715 new_rx_ring_size = min_t(u32, new_rx_ring_size,
716 VMXNET3_RX_RING_MAX_SIZE / sz * sz);
717 if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
718 sz) != 0)
719 return -EINVAL;
720
721 /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
722 new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
723 ~VMXNET3_RING_SIZE_MASK;
724 new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
725 VMXNET3_RX_RING2_MAX_SIZE);
726
727 /* For v7 and later, keep ring size power of 2 for UPT */
728 if (VMXNET3_VERSION_GE_7(adapter)) {
729 new_tx_ring_size = rounddown_pow_of_two(new_tx_ring_size);
730 new_rx_ring_size = rounddown_pow_of_two(new_rx_ring_size);
731 new_rx_ring2_size = rounddown_pow_of_two(new_rx_ring2_size);
732 }
733
734 /* rx data ring buffer size has to be a multiple of
735 * VMXNET3_RXDATA_DESC_SIZE_ALIGN
736 */
737 new_rxdata_desc_size =
738 (param->rx_mini_pending + VMXNET3_RXDATA_DESC_SIZE_MASK) &
739 ~VMXNET3_RXDATA_DESC_SIZE_MASK;
740 new_rxdata_desc_size = min_t(u16, new_rxdata_desc_size,
741 VMXNET3_RXDATA_DESC_MAX_SIZE);
742
743 if (new_tx_ring_size == adapter->tx_ring_size &&
744 new_rx_ring_size == adapter->rx_ring_size &&
745 new_rx_ring2_size == adapter->rx_ring2_size &&
746 new_rxdata_desc_size == adapter->rxdata_desc_size) {
747 return 0;
748 }
749
750 /*
751 * Reset_work may be in the middle of resetting the device, wait for its
752 * completion.
753 */
754 while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
755 usleep_range(1000, 2000);
756
757 if (netif_running(netdev)) {
758 vmxnet3_quiesce_dev(adapter);
759 vmxnet3_reset_dev(adapter);
760
761 /* recreate the rx queue and the tx queue based on the
762 * new sizes */
763 vmxnet3_tq_destroy_all(adapter);
764 vmxnet3_rq_destroy_all(adapter);
765
766 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
767 new_rx_ring_size, new_rx_ring2_size,
768 adapter->txdata_desc_size,
769 new_rxdata_desc_size);
770 if (err) {
771 /* failed, most likely because of OOM, try default
772 * size */
773 netdev_err(netdev, "failed to apply new sizes, "
774 "try the default ones\n");
775 new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
776 new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
777 new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
778 new_rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
779 VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
780
781 err = vmxnet3_create_queues(adapter,
782 new_tx_ring_size,
783 new_rx_ring_size,
784 new_rx_ring2_size,
785 adapter->txdata_desc_size,
786 new_rxdata_desc_size);
787 if (err) {
788 netdev_err(netdev, "failed to create queues "
789 "with default sizes. Closing it\n");
790 goto out;
791 }
792 }
793
794 err = vmxnet3_activate_dev(adapter);
795 if (err)
796 netdev_err(netdev, "failed to re-activate, error %d."
797 " Closing it\n", err);
798 }
799 adapter->tx_ring_size = new_tx_ring_size;
800 adapter->rx_ring_size = new_rx_ring_size;
801 adapter->rx_ring2_size = new_rx_ring2_size;
802 adapter->rxdata_desc_size = new_rxdata_desc_size;
803
804 out:
805 clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
806 if (err)
807 vmxnet3_force_close(adapter);
808
809 return err;
810 }
811
812 static int
vmxnet3_get_rss_hash_opts(struct vmxnet3_adapter * adapter,struct ethtool_rxnfc * info)813 vmxnet3_get_rss_hash_opts(struct vmxnet3_adapter *adapter,
814 struct ethtool_rxnfc *info)
815 {
816 enum Vmxnet3_RSSField rss_fields;
817
818 if (netif_running(adapter->netdev)) {
819 unsigned long flags;
820
821 spin_lock_irqsave(&adapter->cmd_lock, flags);
822
823 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
824 VMXNET3_CMD_GET_RSS_FIELDS);
825 rss_fields = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
826 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
827 } else {
828 rss_fields = adapter->rss_fields;
829 }
830
831 info->data = 0;
832
833 /* Report default options for RSS on vmxnet3 */
834 switch (info->flow_type) {
835 case TCP_V4_FLOW:
836 case TCP_V6_FLOW:
837 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3 |
838 RXH_IP_SRC | RXH_IP_DST;
839 break;
840 case UDP_V4_FLOW:
841 if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP4)
842 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
843 info->data |= RXH_IP_SRC | RXH_IP_DST;
844 break;
845 case AH_ESP_V4_FLOW:
846 case AH_V4_FLOW:
847 case ESP_V4_FLOW:
848 if (rss_fields & VMXNET3_RSS_FIELDS_ESPIP4)
849 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
850 fallthrough;
851 case SCTP_V4_FLOW:
852 case IPV4_FLOW:
853 info->data |= RXH_IP_SRC | RXH_IP_DST;
854 break;
855 case UDP_V6_FLOW:
856 if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP6)
857 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
858 info->data |= RXH_IP_SRC | RXH_IP_DST;
859 break;
860 case AH_ESP_V6_FLOW:
861 case AH_V6_FLOW:
862 case ESP_V6_FLOW:
863 if (VMXNET3_VERSION_GE_6(adapter) &&
864 (rss_fields & VMXNET3_RSS_FIELDS_ESPIP6))
865 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
866 fallthrough;
867 case SCTP_V6_FLOW:
868 case IPV6_FLOW:
869 info->data |= RXH_IP_SRC | RXH_IP_DST;
870 break;
871 default:
872 return -EINVAL;
873 }
874
875 return 0;
876 }
877
878 static int
vmxnet3_set_rss_hash_opt(struct net_device * netdev,struct vmxnet3_adapter * adapter,struct ethtool_rxnfc * nfc)879 vmxnet3_set_rss_hash_opt(struct net_device *netdev,
880 struct vmxnet3_adapter *adapter,
881 struct ethtool_rxnfc *nfc)
882 {
883 enum Vmxnet3_RSSField rss_fields = adapter->rss_fields;
884
885 /* RSS does not support anything other than hashing
886 * to queues on src and dst IPs and ports
887 */
888 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
889 RXH_L4_B_0_1 | RXH_L4_B_2_3))
890 return -EINVAL;
891
892 switch (nfc->flow_type) {
893 case TCP_V4_FLOW:
894 case TCP_V6_FLOW:
895 if (!(nfc->data & RXH_IP_SRC) ||
896 !(nfc->data & RXH_IP_DST) ||
897 !(nfc->data & RXH_L4_B_0_1) ||
898 !(nfc->data & RXH_L4_B_2_3))
899 return -EINVAL;
900 break;
901 case UDP_V4_FLOW:
902 if (!(nfc->data & RXH_IP_SRC) ||
903 !(nfc->data & RXH_IP_DST))
904 return -EINVAL;
905 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
906 case 0:
907 rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP4;
908 break;
909 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
910 rss_fields |= VMXNET3_RSS_FIELDS_UDPIP4;
911 break;
912 default:
913 return -EINVAL;
914 }
915 break;
916 case UDP_V6_FLOW:
917 if (!(nfc->data & RXH_IP_SRC) ||
918 !(nfc->data & RXH_IP_DST))
919 return -EINVAL;
920 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
921 case 0:
922 rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP6;
923 break;
924 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
925 rss_fields |= VMXNET3_RSS_FIELDS_UDPIP6;
926 break;
927 default:
928 return -EINVAL;
929 }
930 break;
931 case ESP_V4_FLOW:
932 case AH_V4_FLOW:
933 case AH_ESP_V4_FLOW:
934 if (!(nfc->data & RXH_IP_SRC) ||
935 !(nfc->data & RXH_IP_DST))
936 return -EINVAL;
937 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
938 case 0:
939 rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP4;
940 break;
941 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
942 rss_fields |= VMXNET3_RSS_FIELDS_ESPIP4;
943 break;
944 default:
945 return -EINVAL;
946 }
947 break;
948 case ESP_V6_FLOW:
949 case AH_V6_FLOW:
950 case AH_ESP_V6_FLOW:
951 if (!VMXNET3_VERSION_GE_6(adapter))
952 return -EOPNOTSUPP;
953 if (!(nfc->data & RXH_IP_SRC) ||
954 !(nfc->data & RXH_IP_DST))
955 return -EINVAL;
956 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
957 case 0:
958 rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP6;
959 break;
960 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
961 rss_fields |= VMXNET3_RSS_FIELDS_ESPIP6;
962 break;
963 default:
964 return -EINVAL;
965 }
966 break;
967 case SCTP_V4_FLOW:
968 case SCTP_V6_FLOW:
969 if (!(nfc->data & RXH_IP_SRC) ||
970 !(nfc->data & RXH_IP_DST) ||
971 (nfc->data & RXH_L4_B_0_1) ||
972 (nfc->data & RXH_L4_B_2_3))
973 return -EINVAL;
974 break;
975 default:
976 return -EINVAL;
977 }
978
979 /* if we changed something we need to update flags */
980 if (rss_fields != adapter->rss_fields) {
981 adapter->default_rss_fields = false;
982 if (netif_running(netdev)) {
983 struct Vmxnet3_DriverShared *shared = adapter->shared;
984 union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
985 unsigned long flags;
986
987 if (VMXNET3_VERSION_GE_7(adapter)) {
988 if ((rss_fields & VMXNET3_RSS_FIELDS_UDPIP4 ||
989 rss_fields & VMXNET3_RSS_FIELDS_UDPIP6) &&
990 vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
991 VMXNET3_CAP_UDP_RSS)) {
992 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_UDP_RSS;
993 } else {
994 adapter->dev_caps[0] &= ~(1UL << VMXNET3_CAP_UDP_RSS);
995 }
996 if ((rss_fields & VMXNET3_RSS_FIELDS_ESPIP4) &&
997 vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
998 VMXNET3_CAP_ESP_RSS_IPV4)) {
999 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_ESP_RSS_IPV4;
1000 } else {
1001 adapter->dev_caps[0] &= ~(1UL << VMXNET3_CAP_ESP_RSS_IPV4);
1002 }
1003 if ((rss_fields & VMXNET3_RSS_FIELDS_ESPIP6) &&
1004 vmxnet3_check_ptcapability(adapter->ptcap_supported[0],
1005 VMXNET3_CAP_ESP_RSS_IPV6)) {
1006 adapter->dev_caps[0] |= 1UL << VMXNET3_CAP_ESP_RSS_IPV6;
1007 } else {
1008 adapter->dev_caps[0] &= ~(1UL << VMXNET3_CAP_ESP_RSS_IPV6);
1009 }
1010
1011 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DCR,
1012 adapter->dev_caps[0]);
1013 spin_lock_irqsave(&adapter->cmd_lock, flags);
1014 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1015 VMXNET3_CMD_GET_DCR0_REG);
1016 adapter->dev_caps[0] = VMXNET3_READ_BAR1_REG(adapter,
1017 VMXNET3_REG_CMD);
1018 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1019 }
1020 spin_lock_irqsave(&adapter->cmd_lock, flags);
1021 cmdInfo->setRssFields = rss_fields;
1022 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1023 VMXNET3_CMD_SET_RSS_FIELDS);
1024
1025 /* Not all requested RSS may get applied, so get and
1026 * cache what was actually applied.
1027 */
1028 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1029 VMXNET3_CMD_GET_RSS_FIELDS);
1030 adapter->rss_fields =
1031 VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
1032 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1033 } else {
1034 /* When the device is activated, we will try to apply
1035 * these rules and cache the applied value later.
1036 */
1037 adapter->rss_fields = rss_fields;
1038 }
1039 }
1040 return 0;
1041 }
1042
1043 static int
vmxnet3_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info,u32 * rules)1044 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
1045 u32 *rules)
1046 {
1047 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1048 int err = 0;
1049
1050 switch (info->cmd) {
1051 case ETHTOOL_GRXRINGS:
1052 info->data = adapter->num_rx_queues;
1053 break;
1054 case ETHTOOL_GRXFH:
1055 if (!VMXNET3_VERSION_GE_4(adapter)) {
1056 err = -EOPNOTSUPP;
1057 break;
1058 }
1059 #ifdef VMXNET3_RSS
1060 if (!adapter->rss) {
1061 err = -EOPNOTSUPP;
1062 break;
1063 }
1064 #endif
1065 err = vmxnet3_get_rss_hash_opts(adapter, info);
1066 break;
1067 default:
1068 err = -EOPNOTSUPP;
1069 break;
1070 }
1071
1072 return err;
1073 }
1074
1075 static int
vmxnet3_set_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info)1076 vmxnet3_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
1077 {
1078 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1079 int err = 0;
1080
1081 if (!VMXNET3_VERSION_GE_4(adapter)) {
1082 err = -EOPNOTSUPP;
1083 goto done;
1084 }
1085 #ifdef VMXNET3_RSS
1086 if (!adapter->rss) {
1087 err = -EOPNOTSUPP;
1088 goto done;
1089 }
1090 #endif
1091
1092 switch (info->cmd) {
1093 case ETHTOOL_SRXFH:
1094 err = vmxnet3_set_rss_hash_opt(netdev, adapter, info);
1095 break;
1096 default:
1097 err = -EOPNOTSUPP;
1098 break;
1099 }
1100
1101 done:
1102 return err;
1103 }
1104
1105 #ifdef VMXNET3_RSS
1106 static u32
vmxnet3_get_rss_indir_size(struct net_device * netdev)1107 vmxnet3_get_rss_indir_size(struct net_device *netdev)
1108 {
1109 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1110 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1111
1112 return rssConf->indTableSize;
1113 }
1114
1115 static int
vmxnet3_get_rss(struct net_device * netdev,u32 * p,u8 * key,u8 * hfunc)1116 vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
1117 {
1118 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1119 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1120 unsigned int n = rssConf->indTableSize;
1121
1122 if (hfunc)
1123 *hfunc = ETH_RSS_HASH_TOP;
1124 if (!p)
1125 return 0;
1126 if (n > UPT1_RSS_MAX_IND_TABLE_SIZE)
1127 return 0;
1128 while (n--)
1129 p[n] = rssConf->indTable[n];
1130 return 0;
1131
1132 }
1133
1134 static int
vmxnet3_set_rss(struct net_device * netdev,const u32 * p,const u8 * key,const u8 hfunc)1135 vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
1136 const u8 hfunc)
1137 {
1138 unsigned int i;
1139 unsigned long flags;
1140 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1141 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1142
1143 /* We do not allow change in unsupported parameters */
1144 if (key ||
1145 (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
1146 return -EOPNOTSUPP;
1147 if (!p)
1148 return 0;
1149 for (i = 0; i < rssConf->indTableSize; i++)
1150 rssConf->indTable[i] = p[i];
1151
1152 spin_lock_irqsave(&adapter->cmd_lock, flags);
1153 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1154 VMXNET3_CMD_UPDATE_RSSIDT);
1155 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1156
1157 return 0;
1158
1159 }
1160 #endif
1161
vmxnet3_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)1162 static int vmxnet3_get_coalesce(struct net_device *netdev,
1163 struct ethtool_coalesce *ec,
1164 struct kernel_ethtool_coalesce *kernel_coal,
1165 struct netlink_ext_ack *extack)
1166 {
1167 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1168
1169 if (!VMXNET3_VERSION_GE_3(adapter))
1170 return -EOPNOTSUPP;
1171
1172 switch (adapter->coal_conf->coalMode) {
1173 case VMXNET3_COALESCE_DISABLED:
1174 /* struct ethtool_coalesce is already initialized to 0 */
1175 break;
1176 case VMXNET3_COALESCE_ADAPT:
1177 ec->use_adaptive_rx_coalesce = true;
1178 break;
1179 case VMXNET3_COALESCE_STATIC:
1180 ec->tx_max_coalesced_frames =
1181 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth;
1182 ec->rx_max_coalesced_frames =
1183 adapter->coal_conf->coalPara.coalStatic.rx_depth;
1184 break;
1185 case VMXNET3_COALESCE_RBC: {
1186 u32 rbc_rate;
1187
1188 rbc_rate = adapter->coal_conf->coalPara.coalRbc.rbc_rate;
1189 ec->rx_coalesce_usecs = VMXNET3_COAL_RBC_USECS(rbc_rate);
1190 }
1191 break;
1192 default:
1193 return -EOPNOTSUPP;
1194 }
1195
1196 return 0;
1197 }
1198
vmxnet3_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)1199 static int vmxnet3_set_coalesce(struct net_device *netdev,
1200 struct ethtool_coalesce *ec,
1201 struct kernel_ethtool_coalesce *kernel_coal,
1202 struct netlink_ext_ack *extack)
1203 {
1204 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1205 struct Vmxnet3_DriverShared *shared = adapter->shared;
1206 union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
1207 unsigned long flags;
1208
1209 if (!VMXNET3_VERSION_GE_3(adapter))
1210 return -EOPNOTSUPP;
1211
1212 if ((ec->rx_coalesce_usecs == 0) &&
1213 (ec->use_adaptive_rx_coalesce == 0) &&
1214 (ec->tx_max_coalesced_frames == 0) &&
1215 (ec->rx_max_coalesced_frames == 0)) {
1216 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1217 adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
1218 goto done;
1219 }
1220
1221 if (ec->rx_coalesce_usecs != 0) {
1222 u32 rbc_rate;
1223
1224 if ((ec->use_adaptive_rx_coalesce != 0) ||
1225 (ec->tx_max_coalesced_frames != 0) ||
1226 (ec->rx_max_coalesced_frames != 0)) {
1227 return -EINVAL;
1228 }
1229
1230 rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
1231 if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
1232 rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
1233 return -EINVAL;
1234 }
1235
1236 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1237 adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
1238 adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
1239 goto done;
1240 }
1241
1242 if (ec->use_adaptive_rx_coalesce != 0) {
1243 if (ec->tx_max_coalesced_frames != 0 ||
1244 ec->rx_max_coalesced_frames != 0) {
1245 return -EINVAL;
1246 }
1247 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1248 adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
1249 goto done;
1250 }
1251
1252 if ((ec->tx_max_coalesced_frames != 0) ||
1253 (ec->rx_max_coalesced_frames != 0)) {
1254 if ((ec->tx_max_coalesced_frames >
1255 VMXNET3_COAL_STATIC_MAX_DEPTH) ||
1256 (ec->rx_max_coalesced_frames >
1257 VMXNET3_COAL_STATIC_MAX_DEPTH)) {
1258 return -EINVAL;
1259 }
1260
1261 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1262 adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
1263
1264 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
1265 (ec->tx_max_coalesced_frames ?
1266 ec->tx_max_coalesced_frames :
1267 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
1268
1269 adapter->coal_conf->coalPara.coalStatic.rx_depth =
1270 (ec->rx_max_coalesced_frames ?
1271 ec->rx_max_coalesced_frames :
1272 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
1273
1274 adapter->coal_conf->coalPara.coalStatic.tx_depth =
1275 VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
1276 goto done;
1277 }
1278
1279 done:
1280 adapter->default_coal_mode = false;
1281 if (netif_running(netdev)) {
1282 spin_lock_irqsave(&adapter->cmd_lock, flags);
1283 cmdInfo->varConf.confVer = 1;
1284 cmdInfo->varConf.confLen =
1285 cpu_to_le32(sizeof(*adapter->coal_conf));
1286 cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa);
1287 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1288 VMXNET3_CMD_SET_COALESCE);
1289 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1290 }
1291
1292 return 0;
1293 }
1294
vmxnet3_get_channels(struct net_device * netdev,struct ethtool_channels * ec)1295 static void vmxnet3_get_channels(struct net_device *netdev,
1296 struct ethtool_channels *ec)
1297 {
1298 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1299
1300 if (IS_ENABLED(CONFIG_PCI_MSI) && adapter->intr.type == VMXNET3_IT_MSIX) {
1301 if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) {
1302 ec->combined_count = adapter->num_tx_queues;
1303 } else {
1304 ec->rx_count = adapter->num_rx_queues;
1305 ec->tx_count =
1306 adapter->share_intr == VMXNET3_INTR_TXSHARE ?
1307 1 : adapter->num_tx_queues;
1308 }
1309 } else {
1310 ec->combined_count = 1;
1311 }
1312
1313 ec->other_count = 1;
1314
1315 /* Number of interrupts cannot be changed on the fly */
1316 /* Just set maximums to actual values */
1317 ec->max_rx = ec->rx_count;
1318 ec->max_tx = ec->tx_count;
1319 ec->max_combined = ec->combined_count;
1320 ec->max_other = ec->other_count;
1321 }
1322
1323 static const struct ethtool_ops vmxnet3_ethtool_ops = {
1324 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
1325 ETHTOOL_COALESCE_MAX_FRAMES |
1326 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
1327 .get_drvinfo = vmxnet3_get_drvinfo,
1328 .get_regs_len = vmxnet3_get_regs_len,
1329 .get_regs = vmxnet3_get_regs,
1330 .get_wol = vmxnet3_get_wol,
1331 .set_wol = vmxnet3_set_wol,
1332 .get_link = ethtool_op_get_link,
1333 .get_coalesce = vmxnet3_get_coalesce,
1334 .set_coalesce = vmxnet3_set_coalesce,
1335 .get_strings = vmxnet3_get_strings,
1336 .get_sset_count = vmxnet3_get_sset_count,
1337 .get_ethtool_stats = vmxnet3_get_ethtool_stats,
1338 .get_ringparam = vmxnet3_get_ringparam,
1339 .set_ringparam = vmxnet3_set_ringparam,
1340 .get_rxnfc = vmxnet3_get_rxnfc,
1341 .set_rxnfc = vmxnet3_set_rxnfc,
1342 #ifdef VMXNET3_RSS
1343 .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
1344 .get_rxfh = vmxnet3_get_rss,
1345 .set_rxfh = vmxnet3_set_rss,
1346 #endif
1347 .get_link_ksettings = vmxnet3_get_link_ksettings,
1348 .get_channels = vmxnet3_get_channels,
1349 };
1350
vmxnet3_set_ethtool_ops(struct net_device * netdev)1351 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
1352 {
1353 netdev->ethtool_ops = &vmxnet3_ethtool_ops;
1354 }
1355
