1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
3
4 /* ethtool support for ixgbevf */
5
6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8 #include <linux/types.h>
9 #include <linux/module.h>
10 #include <linux/slab.h>
11 #include <linux/pci.h>
12 #include <linux/netdevice.h>
13 #include <linux/ethtool.h>
14 #include <linux/vmalloc.h>
15 #include <linux/if_vlan.h>
16 #include <linux/uaccess.h>
17
18 #include "ixgbevf.h"
19
20 enum {NETDEV_STATS, IXGBEVF_STATS};
21
22 struct ixgbe_stats {
23 char stat_string[ETH_GSTRING_LEN];
24 int type;
25 int sizeof_stat;
26 int stat_offset;
27 };
28
29 #define IXGBEVF_STAT(_name, _stat) { \
30 .stat_string = _name, \
31 .type = IXGBEVF_STATS, \
32 .sizeof_stat = sizeof_field(struct ixgbevf_adapter, _stat), \
33 .stat_offset = offsetof(struct ixgbevf_adapter, _stat) \
34 }
35
36 #define IXGBEVF_NETDEV_STAT(_net_stat) { \
37 .stat_string = #_net_stat, \
38 .type = NETDEV_STATS, \
39 .sizeof_stat = sizeof_field(struct net_device_stats, _net_stat), \
40 .stat_offset = offsetof(struct net_device_stats, _net_stat) \
41 }
42
43 static struct ixgbe_stats ixgbevf_gstrings_stats[] = {
44 IXGBEVF_NETDEV_STAT(rx_packets),
45 IXGBEVF_NETDEV_STAT(tx_packets),
46 IXGBEVF_NETDEV_STAT(rx_bytes),
47 IXGBEVF_NETDEV_STAT(tx_bytes),
48 IXGBEVF_STAT("tx_busy", tx_busy),
49 IXGBEVF_STAT("tx_restart_queue", restart_queue),
50 IXGBEVF_STAT("tx_timeout_count", tx_timeout_count),
51 IXGBEVF_NETDEV_STAT(multicast),
52 IXGBEVF_STAT("rx_csum_offload_errors", hw_csum_rx_error),
53 IXGBEVF_STAT("alloc_rx_page", alloc_rx_page),
54 IXGBEVF_STAT("alloc_rx_page_failed", alloc_rx_page_failed),
55 IXGBEVF_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed),
56 IXGBEVF_STAT("tx_ipsec", tx_ipsec),
57 IXGBEVF_STAT("rx_ipsec", rx_ipsec),
58 };
59
60 #define IXGBEVF_QUEUE_STATS_LEN ( \
61 (((struct ixgbevf_adapter *)netdev_priv(netdev))->num_tx_queues + \
62 ((struct ixgbevf_adapter *)netdev_priv(netdev))->num_xdp_queues + \
63 ((struct ixgbevf_adapter *)netdev_priv(netdev))->num_rx_queues) * \
64 (sizeof(struct ixgbevf_stats) / sizeof(u64)))
65 #define IXGBEVF_GLOBAL_STATS_LEN ARRAY_SIZE(ixgbevf_gstrings_stats)
66
67 #define IXGBEVF_STATS_LEN (IXGBEVF_GLOBAL_STATS_LEN + IXGBEVF_QUEUE_STATS_LEN)
68 static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
69 "Register test (offline)",
70 "Link test (on/offline)"
71 };
72
73 #define IXGBEVF_TEST_LEN (sizeof(ixgbe_gstrings_test) / ETH_GSTRING_LEN)
74
75 static const char ixgbevf_priv_flags_strings[][ETH_GSTRING_LEN] = {
76 #define IXGBEVF_PRIV_FLAGS_LEGACY_RX BIT(0)
77 "legacy-rx",
78 };
79
80 #define IXGBEVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(ixgbevf_priv_flags_strings)
81
ixgbevf_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)82 static int ixgbevf_get_link_ksettings(struct net_device *netdev,
83 struct ethtool_link_ksettings *cmd)
84 {
85 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
86
87 ethtool_link_ksettings_zero_link_mode(cmd, supported);
88 ethtool_link_ksettings_add_link_mode(cmd, supported, 10000baseT_Full);
89 cmd->base.autoneg = AUTONEG_DISABLE;
90 cmd->base.port = -1;
91
92 if (adapter->link_up) {
93 __u32 speed = SPEED_10000;
94
95 switch (adapter->link_speed) {
96 case IXGBE_LINK_SPEED_10GB_FULL:
97 speed = SPEED_10000;
98 break;
99 case IXGBE_LINK_SPEED_1GB_FULL:
100 speed = SPEED_1000;
101 break;
102 case IXGBE_LINK_SPEED_100_FULL:
103 speed = SPEED_100;
104 break;
105 }
106
107 cmd->base.speed = speed;
108 cmd->base.duplex = DUPLEX_FULL;
109 } else {
110 cmd->base.speed = SPEED_UNKNOWN;
111 cmd->base.duplex = DUPLEX_UNKNOWN;
112 }
113
114 return 0;
115 }
116
ixgbevf_get_msglevel(struct net_device * netdev)117 static u32 ixgbevf_get_msglevel(struct net_device *netdev)
118 {
119 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
120
121 return adapter->msg_enable;
122 }
123
ixgbevf_set_msglevel(struct net_device * netdev,u32 data)124 static void ixgbevf_set_msglevel(struct net_device *netdev, u32 data)
125 {
126 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
127
128 adapter->msg_enable = data;
129 }
130
ixgbevf_get_regs_len(struct net_device * netdev)131 static int ixgbevf_get_regs_len(struct net_device *netdev)
132 {
133 #define IXGBE_REGS_LEN 45
134 return IXGBE_REGS_LEN * sizeof(u32);
135 }
136
ixgbevf_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)137 static void ixgbevf_get_regs(struct net_device *netdev,
138 struct ethtool_regs *regs,
139 void *p)
140 {
141 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
142 struct ixgbe_hw *hw = &adapter->hw;
143 u32 *regs_buff = p;
144 u32 regs_len = ixgbevf_get_regs_len(netdev);
145 u8 i;
146
147 memset(p, 0, regs_len);
148
149 /* generate a number suitable for ethtool's register version */
150 regs->version = (1u << 24) | (hw->revision_id << 16) | hw->device_id;
151
152 /* General Registers */
153 regs_buff[0] = IXGBE_READ_REG(hw, IXGBE_VFCTRL);
154 regs_buff[1] = IXGBE_READ_REG(hw, IXGBE_VFSTATUS);
155 regs_buff[2] = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
156 regs_buff[3] = IXGBE_READ_REG(hw, IXGBE_VFRXMEMWRAP);
157 regs_buff[4] = IXGBE_READ_REG(hw, IXGBE_VFFRTIMER);
158
159 /* Interrupt */
160 /* don't read EICR because it can clear interrupt causes, instead
161 * read EICS which is a shadow but doesn't clear EICR
162 */
163 regs_buff[5] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
164 regs_buff[6] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
165 regs_buff[7] = IXGBE_READ_REG(hw, IXGBE_VTEIMS);
166 regs_buff[8] = IXGBE_READ_REG(hw, IXGBE_VTEIMC);
167 regs_buff[9] = IXGBE_READ_REG(hw, IXGBE_VTEIAC);
168 regs_buff[10] = IXGBE_READ_REG(hw, IXGBE_VTEIAM);
169 regs_buff[11] = IXGBE_READ_REG(hw, IXGBE_VTEITR(0));
170 regs_buff[12] = IXGBE_READ_REG(hw, IXGBE_VTIVAR(0));
171 regs_buff[13] = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
172
173 /* Receive DMA */
174 for (i = 0; i < 2; i++)
175 regs_buff[14 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAL(i));
176 for (i = 0; i < 2; i++)
177 regs_buff[16 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAH(i));
178 for (i = 0; i < 2; i++)
179 regs_buff[18 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDLEN(i));
180 for (i = 0; i < 2; i++)
181 regs_buff[20 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDH(i));
182 for (i = 0; i < 2; i++)
183 regs_buff[22 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDT(i));
184 for (i = 0; i < 2; i++)
185 regs_buff[24 + i] = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
186 for (i = 0; i < 2; i++)
187 regs_buff[26 + i] = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(i));
188
189 /* Receive */
190 regs_buff[28] = IXGBE_READ_REG(hw, IXGBE_VFPSRTYPE);
191
192 /* Transmit */
193 for (i = 0; i < 2; i++)
194 regs_buff[29 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAL(i));
195 for (i = 0; i < 2; i++)
196 regs_buff[31 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAH(i));
197 for (i = 0; i < 2; i++)
198 regs_buff[33 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDLEN(i));
199 for (i = 0; i < 2; i++)
200 regs_buff[35 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDH(i));
201 for (i = 0; i < 2; i++)
202 regs_buff[37 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDT(i));
203 for (i = 0; i < 2; i++)
204 regs_buff[39 + i] = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
205 for (i = 0; i < 2; i++)
206 regs_buff[41 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAL(i));
207 for (i = 0; i < 2; i++)
208 regs_buff[43 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAH(i));
209 }
210
ixgbevf_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)211 static void ixgbevf_get_drvinfo(struct net_device *netdev,
212 struct ethtool_drvinfo *drvinfo)
213 {
214 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
215
216 strscpy(drvinfo->driver, ixgbevf_driver_name, sizeof(drvinfo->driver));
217 strscpy(drvinfo->bus_info, pci_name(adapter->pdev),
218 sizeof(drvinfo->bus_info));
219
220 drvinfo->n_priv_flags = IXGBEVF_PRIV_FLAGS_STR_LEN;
221 }
222
ixgbevf_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)223 static void ixgbevf_get_ringparam(struct net_device *netdev,
224 struct ethtool_ringparam *ring,
225 struct kernel_ethtool_ringparam *kernel_ring,
226 struct netlink_ext_ack *extack)
227 {
228 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
229
230 ring->rx_max_pending = IXGBEVF_MAX_RXD;
231 ring->tx_max_pending = IXGBEVF_MAX_TXD;
232 ring->rx_pending = adapter->rx_ring_count;
233 ring->tx_pending = adapter->tx_ring_count;
234 }
235
ixgbevf_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)236 static int ixgbevf_set_ringparam(struct net_device *netdev,
237 struct ethtool_ringparam *ring,
238 struct kernel_ethtool_ringparam *kernel_ring,
239 struct netlink_ext_ack *extack)
240 {
241 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
242 struct ixgbevf_ring *tx_ring = NULL, *rx_ring = NULL;
243 u32 new_rx_count, new_tx_count;
244 int i, j, err = 0;
245
246 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
247 return -EINVAL;
248
249 new_tx_count = max_t(u32, ring->tx_pending, IXGBEVF_MIN_TXD);
250 new_tx_count = min_t(u32, new_tx_count, IXGBEVF_MAX_TXD);
251 new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);
252
253 new_rx_count = max_t(u32, ring->rx_pending, IXGBEVF_MIN_RXD);
254 new_rx_count = min_t(u32, new_rx_count, IXGBEVF_MAX_RXD);
255 new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
256
257 /* if nothing to do return success */
258 if ((new_tx_count == adapter->tx_ring_count) &&
259 (new_rx_count == adapter->rx_ring_count))
260 return 0;
261
262 while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
263 usleep_range(1000, 2000);
264
265 if (!netif_running(adapter->netdev)) {
266 for (i = 0; i < adapter->num_tx_queues; i++)
267 adapter->tx_ring[i]->count = new_tx_count;
268 for (i = 0; i < adapter->num_xdp_queues; i++)
269 adapter->xdp_ring[i]->count = new_tx_count;
270 for (i = 0; i < adapter->num_rx_queues; i++)
271 adapter->rx_ring[i]->count = new_rx_count;
272 adapter->tx_ring_count = new_tx_count;
273 adapter->xdp_ring_count = new_tx_count;
274 adapter->rx_ring_count = new_rx_count;
275 goto clear_reset;
276 }
277
278 if (new_tx_count != adapter->tx_ring_count) {
279 tx_ring = vmalloc(array_size(sizeof(*tx_ring),
280 adapter->num_tx_queues +
281 adapter->num_xdp_queues));
282 if (!tx_ring) {
283 err = -ENOMEM;
284 goto clear_reset;
285 }
286
287 for (i = 0; i < adapter->num_tx_queues; i++) {
288 /* clone ring and setup updated count */
289 tx_ring[i] = *adapter->tx_ring[i];
290 tx_ring[i].count = new_tx_count;
291 err = ixgbevf_setup_tx_resources(&tx_ring[i]);
292 if (err) {
293 while (i) {
294 i--;
295 ixgbevf_free_tx_resources(&tx_ring[i]);
296 }
297
298 vfree(tx_ring);
299 tx_ring = NULL;
300
301 goto clear_reset;
302 }
303 }
304
305 for (j = 0; j < adapter->num_xdp_queues; i++, j++) {
306 /* clone ring and setup updated count */
307 tx_ring[i] = *adapter->xdp_ring[j];
308 tx_ring[i].count = new_tx_count;
309 err = ixgbevf_setup_tx_resources(&tx_ring[i]);
310 if (err) {
311 while (i) {
312 i--;
313 ixgbevf_free_tx_resources(&tx_ring[i]);
314 }
315
316 vfree(tx_ring);
317 tx_ring = NULL;
318
319 goto clear_reset;
320 }
321 }
322 }
323
324 if (new_rx_count != adapter->rx_ring_count) {
325 rx_ring = vmalloc(array_size(sizeof(*rx_ring),
326 adapter->num_rx_queues));
327 if (!rx_ring) {
328 err = -ENOMEM;
329 goto clear_reset;
330 }
331
332 for (i = 0; i < adapter->num_rx_queues; i++) {
333 /* clone ring and setup updated count */
334 rx_ring[i] = *adapter->rx_ring[i];
335
336 /* Clear copied XDP RX-queue info */
337 memset(&rx_ring[i].xdp_rxq, 0,
338 sizeof(rx_ring[i].xdp_rxq));
339
340 rx_ring[i].count = new_rx_count;
341 err = ixgbevf_setup_rx_resources(adapter, &rx_ring[i]);
342 if (err) {
343 while (i) {
344 i--;
345 ixgbevf_free_rx_resources(&rx_ring[i]);
346 }
347
348 vfree(rx_ring);
349 rx_ring = NULL;
350
351 goto clear_reset;
352 }
353 }
354 }
355
356 /* bring interface down to prepare for update */
357 ixgbevf_down(adapter);
358
359 /* Tx */
360 if (tx_ring) {
361 for (i = 0; i < adapter->num_tx_queues; i++) {
362 ixgbevf_free_tx_resources(adapter->tx_ring[i]);
363 *adapter->tx_ring[i] = tx_ring[i];
364 }
365 adapter->tx_ring_count = new_tx_count;
366
367 for (j = 0; j < adapter->num_xdp_queues; i++, j++) {
368 ixgbevf_free_tx_resources(adapter->xdp_ring[j]);
369 *adapter->xdp_ring[j] = tx_ring[i];
370 }
371 adapter->xdp_ring_count = new_tx_count;
372
373 vfree(tx_ring);
374 tx_ring = NULL;
375 }
376
377 /* Rx */
378 if (rx_ring) {
379 for (i = 0; i < adapter->num_rx_queues; i++) {
380 ixgbevf_free_rx_resources(adapter->rx_ring[i]);
381 *adapter->rx_ring[i] = rx_ring[i];
382 }
383 adapter->rx_ring_count = new_rx_count;
384
385 vfree(rx_ring);
386 rx_ring = NULL;
387 }
388
389 /* restore interface using new values */
390 ixgbevf_up(adapter);
391
392 clear_reset:
393 /* free Tx resources if Rx error is encountered */
394 if (tx_ring) {
395 for (i = 0;
396 i < adapter->num_tx_queues + adapter->num_xdp_queues; i++)
397 ixgbevf_free_tx_resources(&tx_ring[i]);
398 vfree(tx_ring);
399 }
400
401 clear_bit(__IXGBEVF_RESETTING, &adapter->state);
402 return err;
403 }
404
ixgbevf_get_sset_count(struct net_device * netdev,int stringset)405 static int ixgbevf_get_sset_count(struct net_device *netdev, int stringset)
406 {
407 switch (stringset) {
408 case ETH_SS_TEST:
409 return IXGBEVF_TEST_LEN;
410 case ETH_SS_STATS:
411 return IXGBEVF_STATS_LEN;
412 case ETH_SS_PRIV_FLAGS:
413 return IXGBEVF_PRIV_FLAGS_STR_LEN;
414 default:
415 return -EINVAL;
416 }
417 }
418
ixgbevf_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)419 static void ixgbevf_get_ethtool_stats(struct net_device *netdev,
420 struct ethtool_stats *stats, u64 *data)
421 {
422 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
423 struct rtnl_link_stats64 temp;
424 const struct rtnl_link_stats64 *net_stats;
425 unsigned int start;
426 struct ixgbevf_ring *ring;
427 int i, j;
428 char *p;
429
430 ixgbevf_update_stats(adapter);
431 net_stats = dev_get_stats(netdev, &temp);
432 for (i = 0; i < IXGBEVF_GLOBAL_STATS_LEN; i++) {
433 switch (ixgbevf_gstrings_stats[i].type) {
434 case NETDEV_STATS:
435 p = (char *)net_stats +
436 ixgbevf_gstrings_stats[i].stat_offset;
437 break;
438 case IXGBEVF_STATS:
439 p = (char *)adapter +
440 ixgbevf_gstrings_stats[i].stat_offset;
441 break;
442 default:
443 data[i] = 0;
444 continue;
445 }
446
447 data[i] = (ixgbevf_gstrings_stats[i].sizeof_stat ==
448 sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
449 }
450
451 /* populate Tx queue data */
452 for (j = 0; j < adapter->num_tx_queues; j++) {
453 ring = adapter->tx_ring[j];
454 if (!ring) {
455 data[i++] = 0;
456 data[i++] = 0;
457 continue;
458 }
459
460 do {
461 start = u64_stats_fetch_begin(&ring->syncp);
462 data[i] = ring->stats.packets;
463 data[i + 1] = ring->stats.bytes;
464 } while (u64_stats_fetch_retry(&ring->syncp, start));
465 i += 2;
466 }
467
468 /* populate XDP queue data */
469 for (j = 0; j < adapter->num_xdp_queues; j++) {
470 ring = adapter->xdp_ring[j];
471 if (!ring) {
472 data[i++] = 0;
473 data[i++] = 0;
474 continue;
475 }
476
477 do {
478 start = u64_stats_fetch_begin(&ring->syncp);
479 data[i] = ring->stats.packets;
480 data[i + 1] = ring->stats.bytes;
481 } while (u64_stats_fetch_retry(&ring->syncp, start));
482 i += 2;
483 }
484
485 /* populate Rx queue data */
486 for (j = 0; j < adapter->num_rx_queues; j++) {
487 ring = adapter->rx_ring[j];
488 if (!ring) {
489 data[i++] = 0;
490 data[i++] = 0;
491 continue;
492 }
493
494 do {
495 start = u64_stats_fetch_begin(&ring->syncp);
496 data[i] = ring->stats.packets;
497 data[i + 1] = ring->stats.bytes;
498 } while (u64_stats_fetch_retry(&ring->syncp, start));
499 i += 2;
500 }
501 }
502
ixgbevf_get_strings(struct net_device * netdev,u32 stringset,u8 * data)503 static void ixgbevf_get_strings(struct net_device *netdev, u32 stringset,
504 u8 *data)
505 {
506 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
507 char *p = (char *)data;
508 int i;
509
510 switch (stringset) {
511 case ETH_SS_TEST:
512 memcpy(data, *ixgbe_gstrings_test,
513 IXGBEVF_TEST_LEN * ETH_GSTRING_LEN);
514 break;
515 case ETH_SS_STATS:
516 for (i = 0; i < IXGBEVF_GLOBAL_STATS_LEN; i++) {
517 memcpy(p, ixgbevf_gstrings_stats[i].stat_string,
518 ETH_GSTRING_LEN);
519 p += ETH_GSTRING_LEN;
520 }
521
522 for (i = 0; i < adapter->num_tx_queues; i++) {
523 sprintf(p, "tx_queue_%u_packets", i);
524 p += ETH_GSTRING_LEN;
525 sprintf(p, "tx_queue_%u_bytes", i);
526 p += ETH_GSTRING_LEN;
527 }
528 for (i = 0; i < adapter->num_xdp_queues; i++) {
529 sprintf(p, "xdp_queue_%u_packets", i);
530 p += ETH_GSTRING_LEN;
531 sprintf(p, "xdp_queue_%u_bytes", i);
532 p += ETH_GSTRING_LEN;
533 }
534 for (i = 0; i < adapter->num_rx_queues; i++) {
535 sprintf(p, "rx_queue_%u_packets", i);
536 p += ETH_GSTRING_LEN;
537 sprintf(p, "rx_queue_%u_bytes", i);
538 p += ETH_GSTRING_LEN;
539 }
540 break;
541 case ETH_SS_PRIV_FLAGS:
542 memcpy(data, ixgbevf_priv_flags_strings,
543 IXGBEVF_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
544 break;
545 }
546 }
547
ixgbevf_link_test(struct ixgbevf_adapter * adapter,u64 * data)548 static int ixgbevf_link_test(struct ixgbevf_adapter *adapter, u64 *data)
549 {
550 struct ixgbe_hw *hw = &adapter->hw;
551 bool link_up;
552 u32 link_speed = 0;
553 *data = 0;
554
555 hw->mac.ops.check_link(hw, &link_speed, &link_up, true);
556 if (!link_up)
557 *data = 1;
558
559 return *data;
560 }
561
562 /* ethtool register test data */
563 struct ixgbevf_reg_test {
564 u16 reg;
565 u8 array_len;
566 u8 test_type;
567 u32 mask;
568 u32 write;
569 };
570
571 /* In the hardware, registers are laid out either singly, in arrays
572 * spaced 0x40 bytes apart, or in contiguous tables. We assume
573 * most tests take place on arrays or single registers (handled
574 * as a single-element array) and special-case the tables.
575 * Table tests are always pattern tests.
576 *
577 * We also make provision for some required setup steps by specifying
578 * registers to be written without any read-back testing.
579 */
580
581 #define PATTERN_TEST 1
582 #define SET_READ_TEST 2
583 #define WRITE_NO_TEST 3
584 #define TABLE32_TEST 4
585 #define TABLE64_TEST_LO 5
586 #define TABLE64_TEST_HI 6
587
588 /* default VF register test */
589 static const struct ixgbevf_reg_test reg_test_vf[] = {
590 { IXGBE_VFRDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFF80 },
591 { IXGBE_VFRDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
592 { IXGBE_VFRDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
593 { IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, IXGBE_RXDCTL_ENABLE },
594 { IXGBE_VFRDT(0), 2, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
595 { IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, 0 },
596 { IXGBE_VFTDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
597 { IXGBE_VFTDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
598 { IXGBE_VFTDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFF80 },
599 { .reg = 0 }
600 };
601
602 static const u32 register_test_patterns[] = {
603 0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
604 };
605
reg_pattern_test(struct ixgbevf_adapter * adapter,u64 * data,int reg,u32 mask,u32 write)606 static bool reg_pattern_test(struct ixgbevf_adapter *adapter, u64 *data,
607 int reg, u32 mask, u32 write)
608 {
609 u32 pat, val, before;
610
611 if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
612 *data = 1;
613 return true;
614 }
615 for (pat = 0; pat < ARRAY_SIZE(register_test_patterns); pat++) {
616 before = ixgbevf_read_reg(&adapter->hw, reg);
617 ixgbe_write_reg(&adapter->hw, reg,
618 register_test_patterns[pat] & write);
619 val = ixgbevf_read_reg(&adapter->hw, reg);
620 if (val != (register_test_patterns[pat] & write & mask)) {
621 hw_dbg(&adapter->hw,
622 "pattern test reg %04X failed: got 0x%08X expected 0x%08X\n",
623 reg, val,
624 register_test_patterns[pat] & write & mask);
625 *data = reg;
626 ixgbe_write_reg(&adapter->hw, reg, before);
627 return true;
628 }
629 ixgbe_write_reg(&adapter->hw, reg, before);
630 }
631 return false;
632 }
633
reg_set_and_check(struct ixgbevf_adapter * adapter,u64 * data,int reg,u32 mask,u32 write)634 static bool reg_set_and_check(struct ixgbevf_adapter *adapter, u64 *data,
635 int reg, u32 mask, u32 write)
636 {
637 u32 val, before;
638
639 if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
640 *data = 1;
641 return true;
642 }
643 before = ixgbevf_read_reg(&adapter->hw, reg);
644 ixgbe_write_reg(&adapter->hw, reg, write & mask);
645 val = ixgbevf_read_reg(&adapter->hw, reg);
646 if ((write & mask) != (val & mask)) {
647 pr_err("set/check reg %04X test failed: got 0x%08X expected 0x%08X\n",
648 reg, (val & mask), write & mask);
649 *data = reg;
650 ixgbe_write_reg(&adapter->hw, reg, before);
651 return true;
652 }
653 ixgbe_write_reg(&adapter->hw, reg, before);
654 return false;
655 }
656
ixgbevf_reg_test(struct ixgbevf_adapter * adapter,u64 * data)657 static int ixgbevf_reg_test(struct ixgbevf_adapter *adapter, u64 *data)
658 {
659 const struct ixgbevf_reg_test *test;
660 u32 i;
661
662 if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
663 dev_err(&adapter->pdev->dev,
664 "Adapter removed - register test blocked\n");
665 *data = 1;
666 return 1;
667 }
668 test = reg_test_vf;
669
670 /* Perform the register test, looping through the test table
671 * until we either fail or reach the null entry.
672 */
673 while (test->reg) {
674 for (i = 0; i < test->array_len; i++) {
675 bool b = false;
676
677 switch (test->test_type) {
678 case PATTERN_TEST:
679 b = reg_pattern_test(adapter, data,
680 test->reg + (i * 0x40),
681 test->mask,
682 test->write);
683 break;
684 case SET_READ_TEST:
685 b = reg_set_and_check(adapter, data,
686 test->reg + (i * 0x40),
687 test->mask,
688 test->write);
689 break;
690 case WRITE_NO_TEST:
691 ixgbe_write_reg(&adapter->hw,
692 test->reg + (i * 0x40),
693 test->write);
694 break;
695 case TABLE32_TEST:
696 b = reg_pattern_test(adapter, data,
697 test->reg + (i * 4),
698 test->mask,
699 test->write);
700 break;
701 case TABLE64_TEST_LO:
702 b = reg_pattern_test(adapter, data,
703 test->reg + (i * 8),
704 test->mask,
705 test->write);
706 break;
707 case TABLE64_TEST_HI:
708 b = reg_pattern_test(adapter, data,
709 test->reg + 4 + (i * 8),
710 test->mask,
711 test->write);
712 break;
713 }
714 if (b)
715 return 1;
716 }
717 test++;
718 }
719
720 *data = 0;
721 return *data;
722 }
723
ixgbevf_diag_test(struct net_device * netdev,struct ethtool_test * eth_test,u64 * data)724 static void ixgbevf_diag_test(struct net_device *netdev,
725 struct ethtool_test *eth_test, u64 *data)
726 {
727 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
728 bool if_running = netif_running(netdev);
729
730 if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
731 dev_err(&adapter->pdev->dev,
732 "Adapter removed - test blocked\n");
733 data[0] = 1;
734 data[1] = 1;
735 eth_test->flags |= ETH_TEST_FL_FAILED;
736 return;
737 }
738 set_bit(__IXGBEVF_TESTING, &adapter->state);
739 if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
740 /* Offline tests */
741
742 hw_dbg(&adapter->hw, "offline testing starting\n");
743
744 /* Link test performed before hardware reset so autoneg doesn't
745 * interfere with test result
746 */
747 if (ixgbevf_link_test(adapter, &data[1]))
748 eth_test->flags |= ETH_TEST_FL_FAILED;
749
750 if (if_running)
751 /* indicate we're in test mode */
752 ixgbevf_close(netdev);
753 else
754 ixgbevf_reset(adapter);
755
756 hw_dbg(&adapter->hw, "register testing starting\n");
757 if (ixgbevf_reg_test(adapter, &data[0]))
758 eth_test->flags |= ETH_TEST_FL_FAILED;
759
760 ixgbevf_reset(adapter);
761
762 clear_bit(__IXGBEVF_TESTING, &adapter->state);
763 if (if_running)
764 ixgbevf_open(netdev);
765 } else {
766 hw_dbg(&adapter->hw, "online testing starting\n");
767 /* Online tests */
768 if (ixgbevf_link_test(adapter, &data[1]))
769 eth_test->flags |= ETH_TEST_FL_FAILED;
770
771 /* Online tests aren't run; pass by default */
772 data[0] = 0;
773
774 clear_bit(__IXGBEVF_TESTING, &adapter->state);
775 }
776 msleep_interruptible(4 * 1000);
777 }
778
ixgbevf_nway_reset(struct net_device * netdev)779 static int ixgbevf_nway_reset(struct net_device *netdev)
780 {
781 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
782
783 if (netif_running(netdev))
784 ixgbevf_reinit_locked(adapter);
785
786 return 0;
787 }
788
ixgbevf_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)789 static int ixgbevf_get_coalesce(struct net_device *netdev,
790 struct ethtool_coalesce *ec,
791 struct kernel_ethtool_coalesce *kernel_coal,
792 struct netlink_ext_ack *extack)
793 {
794 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
795
796 /* only valid if in constant ITR mode */
797 if (adapter->rx_itr_setting <= 1)
798 ec->rx_coalesce_usecs = adapter->rx_itr_setting;
799 else
800 ec->rx_coalesce_usecs = adapter->rx_itr_setting >> 2;
801
802 /* if in mixed Tx/Rx queues per vector mode, report only Rx settings */
803 if (adapter->q_vector[0]->tx.count && adapter->q_vector[0]->rx.count)
804 return 0;
805
806 /* only valid if in constant ITR mode */
807 if (adapter->tx_itr_setting <= 1)
808 ec->tx_coalesce_usecs = adapter->tx_itr_setting;
809 else
810 ec->tx_coalesce_usecs = adapter->tx_itr_setting >> 2;
811
812 return 0;
813 }
814
ixgbevf_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)815 static int ixgbevf_set_coalesce(struct net_device *netdev,
816 struct ethtool_coalesce *ec,
817 struct kernel_ethtool_coalesce *kernel_coal,
818 struct netlink_ext_ack *extack)
819 {
820 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
821 struct ixgbevf_q_vector *q_vector;
822 int num_vectors, i;
823 u16 tx_itr_param, rx_itr_param;
824
825 /* don't accept Tx specific changes if we've got mixed RxTx vectors */
826 if (adapter->q_vector[0]->tx.count &&
827 adapter->q_vector[0]->rx.count && ec->tx_coalesce_usecs)
828 return -EINVAL;
829
830 if ((ec->rx_coalesce_usecs > (IXGBE_MAX_EITR >> 2)) ||
831 (ec->tx_coalesce_usecs > (IXGBE_MAX_EITR >> 2)))
832 return -EINVAL;
833
834 if (ec->rx_coalesce_usecs > 1)
835 adapter->rx_itr_setting = ec->rx_coalesce_usecs << 2;
836 else
837 adapter->rx_itr_setting = ec->rx_coalesce_usecs;
838
839 if (adapter->rx_itr_setting == 1)
840 rx_itr_param = IXGBE_20K_ITR;
841 else
842 rx_itr_param = adapter->rx_itr_setting;
843
844 if (ec->tx_coalesce_usecs > 1)
845 adapter->tx_itr_setting = ec->tx_coalesce_usecs << 2;
846 else
847 adapter->tx_itr_setting = ec->tx_coalesce_usecs;
848
849 if (adapter->tx_itr_setting == 1)
850 tx_itr_param = IXGBE_12K_ITR;
851 else
852 tx_itr_param = adapter->tx_itr_setting;
853
854 num_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
855
856 for (i = 0; i < num_vectors; i++) {
857 q_vector = adapter->q_vector[i];
858 if (q_vector->tx.count && !q_vector->rx.count)
859 /* Tx only */
860 q_vector->itr = tx_itr_param;
861 else
862 /* Rx only or mixed */
863 q_vector->itr = rx_itr_param;
864 ixgbevf_write_eitr(q_vector);
865 }
866
867 return 0;
868 }
869
ixgbevf_get_rxnfc(struct net_device * dev,struct ethtool_rxnfc * info,u32 * rules __always_unused)870 static int ixgbevf_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
871 u32 *rules __always_unused)
872 {
873 struct ixgbevf_adapter *adapter = netdev_priv(dev);
874
875 switch (info->cmd) {
876 case ETHTOOL_GRXRINGS:
877 info->data = adapter->num_rx_queues;
878 return 0;
879 default:
880 hw_dbg(&adapter->hw, "Command parameters not supported\n");
881 return -EOPNOTSUPP;
882 }
883 }
884
ixgbevf_get_rxfh_indir_size(struct net_device * netdev)885 static u32 ixgbevf_get_rxfh_indir_size(struct net_device *netdev)
886 {
887 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
888
889 if (adapter->hw.mac.type >= ixgbe_mac_X550_vf)
890 return IXGBEVF_X550_VFRETA_SIZE;
891
892 return IXGBEVF_82599_RETA_SIZE;
893 }
894
ixgbevf_get_rxfh_key_size(struct net_device * netdev)895 static u32 ixgbevf_get_rxfh_key_size(struct net_device *netdev)
896 {
897 return IXGBEVF_RSS_HASH_KEY_SIZE;
898 }
899
ixgbevf_get_rxfh(struct net_device * netdev,u32 * indir,u8 * key,u8 * hfunc)900 static int ixgbevf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
901 u8 *hfunc)
902 {
903 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
904 int err = 0;
905
906 if (hfunc)
907 *hfunc = ETH_RSS_HASH_TOP;
908
909 if (adapter->hw.mac.type >= ixgbe_mac_X550_vf) {
910 if (key)
911 memcpy(key, adapter->rss_key,
912 ixgbevf_get_rxfh_key_size(netdev));
913
914 if (indir) {
915 int i;
916
917 for (i = 0; i < IXGBEVF_X550_VFRETA_SIZE; i++)
918 indir[i] = adapter->rss_indir_tbl[i];
919 }
920 } else {
921 /* If neither indirection table nor hash key was requested
922 * - just return a success avoiding taking any locks.
923 */
924 if (!indir && !key)
925 return 0;
926
927 spin_lock_bh(&adapter->mbx_lock);
928 if (indir)
929 err = ixgbevf_get_reta_locked(&adapter->hw, indir,
930 adapter->num_rx_queues);
931
932 if (!err && key)
933 err = ixgbevf_get_rss_key_locked(&adapter->hw, key);
934
935 spin_unlock_bh(&adapter->mbx_lock);
936 }
937
938 return err;
939 }
940
ixgbevf_get_priv_flags(struct net_device * netdev)941 static u32 ixgbevf_get_priv_flags(struct net_device *netdev)
942 {
943 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
944 u32 priv_flags = 0;
945
946 if (adapter->flags & IXGBEVF_FLAGS_LEGACY_RX)
947 priv_flags |= IXGBEVF_PRIV_FLAGS_LEGACY_RX;
948
949 return priv_flags;
950 }
951
ixgbevf_set_priv_flags(struct net_device * netdev,u32 priv_flags)952 static int ixgbevf_set_priv_flags(struct net_device *netdev, u32 priv_flags)
953 {
954 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
955 unsigned int flags = adapter->flags;
956
957 flags &= ~IXGBEVF_FLAGS_LEGACY_RX;
958 if (priv_flags & IXGBEVF_PRIV_FLAGS_LEGACY_RX)
959 flags |= IXGBEVF_FLAGS_LEGACY_RX;
960
961 if (flags != adapter->flags) {
962 adapter->flags = flags;
963
964 /* reset interface to repopulate queues */
965 if (netif_running(netdev))
966 ixgbevf_reinit_locked(adapter);
967 }
968
969 return 0;
970 }
971
972 static const struct ethtool_ops ixgbevf_ethtool_ops = {
973 .supported_coalesce_params = ETHTOOL_COALESCE_USECS,
974 .get_drvinfo = ixgbevf_get_drvinfo,
975 .get_regs_len = ixgbevf_get_regs_len,
976 .get_regs = ixgbevf_get_regs,
977 .nway_reset = ixgbevf_nway_reset,
978 .get_link = ethtool_op_get_link,
979 .get_ringparam = ixgbevf_get_ringparam,
980 .set_ringparam = ixgbevf_set_ringparam,
981 .get_msglevel = ixgbevf_get_msglevel,
982 .set_msglevel = ixgbevf_set_msglevel,
983 .self_test = ixgbevf_diag_test,
984 .get_sset_count = ixgbevf_get_sset_count,
985 .get_strings = ixgbevf_get_strings,
986 .get_ethtool_stats = ixgbevf_get_ethtool_stats,
987 .get_coalesce = ixgbevf_get_coalesce,
988 .set_coalesce = ixgbevf_set_coalesce,
989 .get_rxnfc = ixgbevf_get_rxnfc,
990 .get_rxfh_indir_size = ixgbevf_get_rxfh_indir_size,
991 .get_rxfh_key_size = ixgbevf_get_rxfh_key_size,
992 .get_rxfh = ixgbevf_get_rxfh,
993 .get_link_ksettings = ixgbevf_get_link_ksettings,
994 .get_priv_flags = ixgbevf_get_priv_flags,
995 .set_priv_flags = ixgbevf_set_priv_flags,
996 };
997
ixgbevf_set_ethtool_ops(struct net_device * netdev)998 void ixgbevf_set_ethtool_ops(struct net_device *netdev)
999 {
1000 netdev->ethtool_ops = &ixgbevf_ethtool_ops;
1001 }
1002