2 * Linux driver for VMware's vmxnet3 ethernet NIC.
4 * Copyright (C) 2008-2021, VMware, Inc. All Rights Reserved.
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.
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
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.
20 * The full GNU General Public License is included in this distribution in
21 * the file called "COPYING".
23 * Maintained by: pv-drivers@vmware.com
28 #include "vmxnet3_int.h"
29 #include <net/vxlan.h>
30 #include <net/geneve.h>
32 #define VXLAN_UDP_PORT 8472
34 struct vmxnet3_stat_desc {
35 char desc[ETH_GSTRING_LEN];
40 /* per tq stats maintained by the device */
41 static const struct vmxnet3_stat_desc
42 vmxnet3_tq_dev_stats[] = {
43 /* description, offset */
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) },
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,
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,
71 { " ring full", offsetof(struct vmxnet3_tq_driver_stats,
73 { " pkts linearized", offsetof(struct vmxnet3_tq_driver_stats,
75 { " hdr cloned", offsetof(struct vmxnet3_tq_driver_stats,
77 { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
81 /* per rq stats maintained by the device */
82 static const struct vmxnet3_stat_desc
83 vmxnet3_rq_dev_stats[] = {
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) },
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,
103 { " err", offsetof(struct vmxnet3_rq_driver_stats,
105 { " fcs", offsetof(struct vmxnet3_rq_driver_stats,
107 { " rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
108 rx_buf_alloc_failure) },
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,
121 vmxnet3_get_stats64(struct net_device *netdev,
122 struct rtnl_link_stats64 *stats)
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;
132 adapter = netdev_priv(netdev);
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);
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;
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;
159 stats->rx_bytes += devRxStats->ucastBytesRxOK +
160 devRxStats->mcastBytesRxOK +
161 devRxStats->bcastBytesRxOK;
163 stats->rx_errors += devRxStats->pktsRxError;
164 stats->rx_dropped += drvRxStats->drop_total;
165 stats->multicast += devRxStats->mcastPktsRxOK;
170 vmxnet3_get_sset_count(struct net_device *netdev, int sset)
172 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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);
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.
195 vmxnet3_get_regs_len(struct net_device *netdev)
197 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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 */)) *
208 vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
210 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
212 strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
214 strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
215 sizeof(drvinfo->version));
217 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
218 sizeof(drvinfo->bus_info));
223 vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
225 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
228 if (stringset != ETH_SS_STATS)
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);
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);
245 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
246 ethtool_sprintf(&buf, vmxnet3_global_stats[i].desc);
249 netdev_features_t vmxnet3_fix_features(struct net_device *netdev,
250 netdev_features_t features)
252 /* If Rx checksum is disabled, then LRO should also be disabled */
253 if (!(features & NETIF_F_RXCSUM))
254 features &= ~NETIF_F_LRO;
259 netdev_features_t vmxnet3_features_check(struct sk_buff *skb,
260 struct net_device *netdev,
261 netdev_features_t features)
263 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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) {
272 switch (vlan_get_protocol(skb)) {
273 case htons(ETH_P_IP):
274 l4_proto = ip_hdr(skb)->protocol;
276 case htons(ETH_P_IPV6):
277 l4_proto = ipv6_hdr(skb)->nexthdr;
280 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
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);
295 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
301 static void vmxnet3_enable_encap_offloads(struct net_device *netdev)
303 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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;
314 static void vmxnet3_disable_encap_offloads(struct net_device *netdev)
316 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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);
327 int vmxnet3_set_features(struct net_device *netdev, netdev_features_t features)
329 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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;
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 |=
342 adapter->shared->devRead.misc.uptFeatures &=
345 /* update hardware LRO capability accordingly */
346 if (features & NETIF_F_LRO)
347 adapter->shared->devRead.misc.uptFeatures |=
350 adapter->shared->devRead.misc.uptFeatures &=
353 if (features & NETIF_F_HW_VLAN_CTAG_RX)
354 adapter->shared->devRead.misc.uptFeatures |=
357 adapter->shared->devRead.misc.uptFeatures &=
360 if ((features & tun_offload_mask) != 0 && !udp_tun_enabled) {
361 vmxnet3_enable_encap_offloads(netdev);
362 adapter->shared->devRead.misc.uptFeatures |=
364 } else if ((features & tun_offload_mask) == 0 &&
366 vmxnet3_disable_encap_offloads(netdev);
367 adapter->shared->devRead.misc.uptFeatures &=
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);
380 vmxnet3_get_ethtool_stats(struct net_device *netdev,
381 struct ethtool_stats *stats, u64 *buf)
383 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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);
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;
397 for (i = 1; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
398 *buf++ = *(u64 *)(base +
399 vmxnet3_tq_dev_stats[i].offset);
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);
407 for (j = 0; j < adapter->num_rx_queues; j++) {
408 base = (u8 *)&adapter->rqd_start[j].stats;
410 for (i = 1; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
411 *buf++ = *(u64 *)(base +
412 vmxnet3_rq_dev_stats[i].offset);
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);
420 base = (u8 *)adapter;
421 for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
422 *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
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.
433 vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
435 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
439 memset(p, 0, vmxnet3_get_regs_len(netdev));
443 /* Update vmxnet3_get_regs_len if we want to dump more registers */
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);
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);
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];
465 buf[j++] = VMXNET3_READ_BAR0_REG(adapter, VMXNET3_REG_TXPROD +
466 i * VMXNET3_REG_ALIGN);
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;
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;
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;
486 buf[j++] = tq->stopped;
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];
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);
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;
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;
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;
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;
527 vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
529 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
531 wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
532 wol->wolopts = adapter->wol;
537 vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
539 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
541 if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
546 adapter->wol = wol->wolopts;
548 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
555 vmxnet3_get_link_ksettings(struct net_device *netdev,
556 struct ethtool_link_ksettings *ecmd)
558 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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;
568 if (adapter->link_speed) {
569 ecmd->base.speed = adapter->link_speed;
570 ecmd->base.duplex = DUPLEX_FULL;
572 ecmd->base.speed = SPEED_UNKNOWN;
573 ecmd->base.duplex = DUPLEX_UNKNOWN;
579 vmxnet3_get_ringparam(struct net_device *netdev,
580 struct ethtool_ringparam *param,
581 struct kernel_ethtool_ringparam *kernel_param,
582 struct netlink_ext_ack *extack)
584 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
586 param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
587 param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
588 param->rx_mini_max_pending = VMXNET3_VERSION_GE_3(adapter) ?
589 VMXNET3_RXDATA_DESC_MAX_SIZE : 0;
590 param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE;
592 param->rx_pending = adapter->rx_ring_size;
593 param->tx_pending = adapter->tx_ring_size;
594 param->rx_mini_pending = VMXNET3_VERSION_GE_3(adapter) ?
595 adapter->rxdata_desc_size : 0;
596 param->rx_jumbo_pending = adapter->rx_ring2_size;
600 vmxnet3_set_ringparam(struct net_device *netdev,
601 struct ethtool_ringparam *param,
602 struct kernel_ethtool_ringparam *kernel_param,
603 struct netlink_ext_ack *extack)
605 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
606 u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size;
607 u16 new_rxdata_desc_size;
611 if (param->tx_pending == 0 || param->tx_pending >
612 VMXNET3_TX_RING_MAX_SIZE)
615 if (param->rx_pending == 0 || param->rx_pending >
616 VMXNET3_RX_RING_MAX_SIZE)
619 if (param->rx_jumbo_pending == 0 ||
620 param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE)
623 /* if adapter not yet initialized, do nothing */
624 if (adapter->rx_buf_per_pkt == 0) {
625 netdev_err(netdev, "adapter not completely initialized, "
626 "ring size cannot be changed yet\n");
630 if (VMXNET3_VERSION_GE_3(adapter)) {
631 if (param->rx_mini_pending > VMXNET3_RXDATA_DESC_MAX_SIZE)
633 } else if (param->rx_mini_pending != 0) {
637 /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
638 new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
639 ~VMXNET3_RING_SIZE_MASK;
640 new_tx_ring_size = min_t(u32, new_tx_ring_size,
641 VMXNET3_TX_RING_MAX_SIZE);
642 if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
643 VMXNET3_RING_SIZE_ALIGN) != 0)
646 /* ring0 has to be a multiple of
647 * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
649 sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
650 new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
651 new_rx_ring_size = min_t(u32, new_rx_ring_size,
652 VMXNET3_RX_RING_MAX_SIZE / sz * sz);
653 if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
657 /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */
658 new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) &
659 ~VMXNET3_RING_SIZE_MASK;
660 new_rx_ring2_size = min_t(u32, new_rx_ring2_size,
661 VMXNET3_RX_RING2_MAX_SIZE);
663 /* rx data ring buffer size has to be a multiple of
664 * VMXNET3_RXDATA_DESC_SIZE_ALIGN
666 new_rxdata_desc_size =
667 (param->rx_mini_pending + VMXNET3_RXDATA_DESC_SIZE_MASK) &
668 ~VMXNET3_RXDATA_DESC_SIZE_MASK;
669 new_rxdata_desc_size = min_t(u16, new_rxdata_desc_size,
670 VMXNET3_RXDATA_DESC_MAX_SIZE);
672 if (new_tx_ring_size == adapter->tx_ring_size &&
673 new_rx_ring_size == adapter->rx_ring_size &&
674 new_rx_ring2_size == adapter->rx_ring2_size &&
675 new_rxdata_desc_size == adapter->rxdata_desc_size) {
680 * Reset_work may be in the middle of resetting the device, wait for its
683 while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
684 usleep_range(1000, 2000);
686 if (netif_running(netdev)) {
687 vmxnet3_quiesce_dev(adapter);
688 vmxnet3_reset_dev(adapter);
690 /* recreate the rx queue and the tx queue based on the
692 vmxnet3_tq_destroy_all(adapter);
693 vmxnet3_rq_destroy_all(adapter);
695 err = vmxnet3_create_queues(adapter, new_tx_ring_size,
696 new_rx_ring_size, new_rx_ring2_size,
697 adapter->txdata_desc_size,
698 new_rxdata_desc_size);
700 /* failed, most likely because of OOM, try default
702 netdev_err(netdev, "failed to apply new sizes, "
703 "try the default ones\n");
704 new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
705 new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
706 new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE;
707 new_rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ?
708 VMXNET3_DEF_RXDATA_DESC_SIZE : 0;
710 err = vmxnet3_create_queues(adapter,
714 adapter->txdata_desc_size,
715 new_rxdata_desc_size);
717 netdev_err(netdev, "failed to create queues "
718 "with default sizes. Closing it\n");
723 err = vmxnet3_activate_dev(adapter);
725 netdev_err(netdev, "failed to re-activate, error %d."
726 " Closing it\n", err);
728 adapter->tx_ring_size = new_tx_ring_size;
729 adapter->rx_ring_size = new_rx_ring_size;
730 adapter->rx_ring2_size = new_rx_ring2_size;
731 adapter->rxdata_desc_size = new_rxdata_desc_size;
734 clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
736 vmxnet3_force_close(adapter);
742 vmxnet3_get_rss_hash_opts(struct vmxnet3_adapter *adapter,
743 struct ethtool_rxnfc *info)
745 enum Vmxnet3_RSSField rss_fields;
747 if (netif_running(adapter->netdev)) {
750 spin_lock_irqsave(&adapter->cmd_lock, flags);
752 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
753 VMXNET3_CMD_GET_RSS_FIELDS);
754 rss_fields = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
755 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
757 rss_fields = adapter->rss_fields;
762 /* Report default options for RSS on vmxnet3 */
763 switch (info->flow_type) {
766 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3 |
767 RXH_IP_SRC | RXH_IP_DST;
770 if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP4)
771 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
772 info->data |= RXH_IP_SRC | RXH_IP_DST;
777 if (rss_fields & VMXNET3_RSS_FIELDS_ESPIP4)
778 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
782 info->data |= RXH_IP_SRC | RXH_IP_DST;
785 if (rss_fields & VMXNET3_RSS_FIELDS_UDPIP6)
786 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
787 info->data |= RXH_IP_SRC | RXH_IP_DST;
792 if (VMXNET3_VERSION_GE_6(adapter) &&
793 (rss_fields & VMXNET3_RSS_FIELDS_ESPIP6))
794 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
798 info->data |= RXH_IP_SRC | RXH_IP_DST;
808 vmxnet3_set_rss_hash_opt(struct net_device *netdev,
809 struct vmxnet3_adapter *adapter,
810 struct ethtool_rxnfc *nfc)
812 enum Vmxnet3_RSSField rss_fields = adapter->rss_fields;
814 /* RSS does not support anything other than hashing
815 * to queues on src and dst IPs and ports
817 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
818 RXH_L4_B_0_1 | RXH_L4_B_2_3))
821 switch (nfc->flow_type) {
824 if (!(nfc->data & RXH_IP_SRC) ||
825 !(nfc->data & RXH_IP_DST) ||
826 !(nfc->data & RXH_L4_B_0_1) ||
827 !(nfc->data & RXH_L4_B_2_3))
831 if (!(nfc->data & RXH_IP_SRC) ||
832 !(nfc->data & RXH_IP_DST))
834 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
836 rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP4;
838 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
839 rss_fields |= VMXNET3_RSS_FIELDS_UDPIP4;
846 if (!(nfc->data & RXH_IP_SRC) ||
847 !(nfc->data & RXH_IP_DST))
849 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
851 rss_fields &= ~VMXNET3_RSS_FIELDS_UDPIP6;
853 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
854 rss_fields |= VMXNET3_RSS_FIELDS_UDPIP6;
863 if (!(nfc->data & RXH_IP_SRC) ||
864 !(nfc->data & RXH_IP_DST))
866 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
868 rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP4;
870 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
871 rss_fields |= VMXNET3_RSS_FIELDS_ESPIP4;
880 if (!VMXNET3_VERSION_GE_6(adapter))
882 if (!(nfc->data & RXH_IP_SRC) ||
883 !(nfc->data & RXH_IP_DST))
885 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
887 rss_fields &= ~VMXNET3_RSS_FIELDS_ESPIP6;
889 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
890 rss_fields |= VMXNET3_RSS_FIELDS_ESPIP6;
898 if (!(nfc->data & RXH_IP_SRC) ||
899 !(nfc->data & RXH_IP_DST) ||
900 (nfc->data & RXH_L4_B_0_1) ||
901 (nfc->data & RXH_L4_B_2_3))
908 /* if we changed something we need to update flags */
909 if (rss_fields != adapter->rss_fields) {
910 adapter->default_rss_fields = false;
911 if (netif_running(netdev)) {
912 struct Vmxnet3_DriverShared *shared = adapter->shared;
913 union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
916 spin_lock_irqsave(&adapter->cmd_lock, flags);
917 cmdInfo->setRssFields = rss_fields;
918 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
919 VMXNET3_CMD_SET_RSS_FIELDS);
921 /* Not all requested RSS may get applied, so get and
922 * cache what was actually applied.
924 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
925 VMXNET3_CMD_GET_RSS_FIELDS);
926 adapter->rss_fields =
927 VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
928 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
930 /* When the device is activated, we will try to apply
931 * these rules and cache the applied value later.
933 adapter->rss_fields = rss_fields;
940 vmxnet3_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
943 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
947 case ETHTOOL_GRXRINGS:
948 info->data = adapter->num_rx_queues;
951 if (!VMXNET3_VERSION_GE_4(adapter)) {
961 err = vmxnet3_get_rss_hash_opts(adapter, info);
972 vmxnet3_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
974 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
977 if (!VMXNET3_VERSION_GE_4(adapter)) {
990 err = vmxnet3_set_rss_hash_opt(netdev, adapter, info);
1003 vmxnet3_get_rss_indir_size(struct net_device *netdev)
1005 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1006 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1008 return rssConf->indTableSize;
1012 vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
1014 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1015 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1016 unsigned int n = rssConf->indTableSize;
1019 *hfunc = ETH_RSS_HASH_TOP;
1022 if (n > UPT1_RSS_MAX_IND_TABLE_SIZE)
1025 p[n] = rssConf->indTable[n];
1031 vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
1035 unsigned long flags;
1036 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1037 struct UPT1_RSSConf *rssConf = adapter->rss_conf;
1039 /* We do not allow change in unsupported parameters */
1041 (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
1045 for (i = 0; i < rssConf->indTableSize; i++)
1046 rssConf->indTable[i] = p[i];
1048 spin_lock_irqsave(&adapter->cmd_lock, flags);
1049 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1050 VMXNET3_CMD_UPDATE_RSSIDT);
1051 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1058 static int vmxnet3_get_coalesce(struct net_device *netdev,
1059 struct ethtool_coalesce *ec,
1060 struct kernel_ethtool_coalesce *kernel_coal,
1061 struct netlink_ext_ack *extack)
1063 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1065 if (!VMXNET3_VERSION_GE_3(adapter))
1068 switch (adapter->coal_conf->coalMode) {
1069 case VMXNET3_COALESCE_DISABLED:
1070 /* struct ethtool_coalesce is already initialized to 0 */
1072 case VMXNET3_COALESCE_ADAPT:
1073 ec->use_adaptive_rx_coalesce = true;
1075 case VMXNET3_COALESCE_STATIC:
1076 ec->tx_max_coalesced_frames =
1077 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth;
1078 ec->rx_max_coalesced_frames =
1079 adapter->coal_conf->coalPara.coalStatic.rx_depth;
1081 case VMXNET3_COALESCE_RBC: {
1084 rbc_rate = adapter->coal_conf->coalPara.coalRbc.rbc_rate;
1085 ec->rx_coalesce_usecs = VMXNET3_COAL_RBC_USECS(rbc_rate);
1095 static int vmxnet3_set_coalesce(struct net_device *netdev,
1096 struct ethtool_coalesce *ec,
1097 struct kernel_ethtool_coalesce *kernel_coal,
1098 struct netlink_ext_ack *extack)
1100 struct vmxnet3_adapter *adapter = netdev_priv(netdev);
1101 struct Vmxnet3_DriverShared *shared = adapter->shared;
1102 union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo;
1103 unsigned long flags;
1105 if (!VMXNET3_VERSION_GE_3(adapter))
1108 if ((ec->rx_coalesce_usecs == 0) &&
1109 (ec->use_adaptive_rx_coalesce == 0) &&
1110 (ec->tx_max_coalesced_frames == 0) &&
1111 (ec->rx_max_coalesced_frames == 0)) {
1112 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1113 adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED;
1117 if (ec->rx_coalesce_usecs != 0) {
1120 if ((ec->use_adaptive_rx_coalesce != 0) ||
1121 (ec->tx_max_coalesced_frames != 0) ||
1122 (ec->rx_max_coalesced_frames != 0)) {
1126 rbc_rate = VMXNET3_COAL_RBC_RATE(ec->rx_coalesce_usecs);
1127 if (rbc_rate < VMXNET3_COAL_RBC_MIN_RATE ||
1128 rbc_rate > VMXNET3_COAL_RBC_MAX_RATE) {
1132 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1133 adapter->coal_conf->coalMode = VMXNET3_COALESCE_RBC;
1134 adapter->coal_conf->coalPara.coalRbc.rbc_rate = rbc_rate;
1138 if (ec->use_adaptive_rx_coalesce != 0) {
1139 if (ec->tx_max_coalesced_frames != 0 ||
1140 ec->rx_max_coalesced_frames != 0) {
1143 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1144 adapter->coal_conf->coalMode = VMXNET3_COALESCE_ADAPT;
1148 if ((ec->tx_max_coalesced_frames != 0) ||
1149 (ec->rx_max_coalesced_frames != 0)) {
1150 if ((ec->tx_max_coalesced_frames >
1151 VMXNET3_COAL_STATIC_MAX_DEPTH) ||
1152 (ec->rx_max_coalesced_frames >
1153 VMXNET3_COAL_STATIC_MAX_DEPTH)) {
1157 memset(adapter->coal_conf, 0, sizeof(*adapter->coal_conf));
1158 adapter->coal_conf->coalMode = VMXNET3_COALESCE_STATIC;
1160 adapter->coal_conf->coalPara.coalStatic.tx_comp_depth =
1161 (ec->tx_max_coalesced_frames ?
1162 ec->tx_max_coalesced_frames :
1163 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
1165 adapter->coal_conf->coalPara.coalStatic.rx_depth =
1166 (ec->rx_max_coalesced_frames ?
1167 ec->rx_max_coalesced_frames :
1168 VMXNET3_COAL_STATIC_DEFAULT_DEPTH);
1170 adapter->coal_conf->coalPara.coalStatic.tx_depth =
1171 VMXNET3_COAL_STATIC_DEFAULT_DEPTH;
1176 adapter->default_coal_mode = false;
1177 if (netif_running(netdev)) {
1178 spin_lock_irqsave(&adapter->cmd_lock, flags);
1179 cmdInfo->varConf.confVer = 1;
1180 cmdInfo->varConf.confLen =
1181 cpu_to_le32(sizeof(*adapter->coal_conf));
1182 cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa);
1183 VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
1184 VMXNET3_CMD_SET_COALESCE);
1185 spin_unlock_irqrestore(&adapter->cmd_lock, flags);
1191 static const struct ethtool_ops vmxnet3_ethtool_ops = {
1192 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
1193 ETHTOOL_COALESCE_MAX_FRAMES |
1194 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
1195 .get_drvinfo = vmxnet3_get_drvinfo,
1196 .get_regs_len = vmxnet3_get_regs_len,
1197 .get_regs = vmxnet3_get_regs,
1198 .get_wol = vmxnet3_get_wol,
1199 .set_wol = vmxnet3_set_wol,
1200 .get_link = ethtool_op_get_link,
1201 .get_coalesce = vmxnet3_get_coalesce,
1202 .set_coalesce = vmxnet3_set_coalesce,
1203 .get_strings = vmxnet3_get_strings,
1204 .get_sset_count = vmxnet3_get_sset_count,
1205 .get_ethtool_stats = vmxnet3_get_ethtool_stats,
1206 .get_ringparam = vmxnet3_get_ringparam,
1207 .set_ringparam = vmxnet3_set_ringparam,
1208 .get_rxnfc = vmxnet3_get_rxnfc,
1209 .set_rxnfc = vmxnet3_set_rxnfc,
1211 .get_rxfh_indir_size = vmxnet3_get_rss_indir_size,
1212 .get_rxfh = vmxnet3_get_rss,
1213 .set_rxfh = vmxnet3_set_rss,
1215 .get_link_ksettings = vmxnet3_get_link_ksettings,
1218 void vmxnet3_set_ethtool_ops(struct net_device *netdev)
1220 netdev->ethtool_ops = &vmxnet3_ethtool_ops;