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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / ethernet / amazon / ena / ena_ethtool.c
blobb4e891d49a941cc3a36d0a42ac60f694ba9b2794
1 /*
2 * Copyright 2015 Amazon.com, Inc. or its affiliates.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #include <linux/pci.h>
34
35 #include "ena_netdev.h"
36
37 struct ena_stats {
38 char name[ETH_GSTRING_LEN];
39 int stat_offset;
40 };
41
42 #define ENA_STAT_ENA_COM_ENTRY(stat) { \
43 .name = #stat, \
44 .stat_offset = offsetof(struct ena_com_stats_admin, stat) \
45 }
46
47 #define ENA_STAT_ENTRY(stat, stat_type) { \
48 .name = #stat, \
49 .stat_offset = offsetof(struct ena_stats_##stat_type, stat) \
50 }
51
52 #define ENA_STAT_RX_ENTRY(stat) \
53 ENA_STAT_ENTRY(stat, rx)
54
55 #define ENA_STAT_TX_ENTRY(stat) \
56 ENA_STAT_ENTRY(stat, tx)
57
58 #define ENA_STAT_GLOBAL_ENTRY(stat) \
59 ENA_STAT_ENTRY(stat, dev)
60
61 static const struct ena_stats ena_stats_global_strings[] = {
62 ENA_STAT_GLOBAL_ENTRY(tx_timeout),
63 ENA_STAT_GLOBAL_ENTRY(suspend),
64 ENA_STAT_GLOBAL_ENTRY(resume),
65 ENA_STAT_GLOBAL_ENTRY(wd_expired),
66 ENA_STAT_GLOBAL_ENTRY(interface_up),
67 ENA_STAT_GLOBAL_ENTRY(interface_down),
68 ENA_STAT_GLOBAL_ENTRY(admin_q_pause),
69 };
70
71 static const struct ena_stats ena_stats_tx_strings[] = {
72 ENA_STAT_TX_ENTRY(cnt),
73 ENA_STAT_TX_ENTRY(bytes),
74 ENA_STAT_TX_ENTRY(queue_stop),
75 ENA_STAT_TX_ENTRY(queue_wakeup),
76 ENA_STAT_TX_ENTRY(dma_mapping_err),
77 ENA_STAT_TX_ENTRY(linearize),
78 ENA_STAT_TX_ENTRY(linearize_failed),
79 ENA_STAT_TX_ENTRY(napi_comp),
80 ENA_STAT_TX_ENTRY(tx_poll),
81 ENA_STAT_TX_ENTRY(doorbells),
82 ENA_STAT_TX_ENTRY(prepare_ctx_err),
83 ENA_STAT_TX_ENTRY(bad_req_id),
84 ENA_STAT_TX_ENTRY(llq_buffer_copy),
85 ENA_STAT_TX_ENTRY(missed_tx),
86 };
87
88 static const struct ena_stats ena_stats_rx_strings[] = {
89 ENA_STAT_RX_ENTRY(cnt),
90 ENA_STAT_RX_ENTRY(bytes),
91 ENA_STAT_RX_ENTRY(rx_copybreak_pkt),
92 ENA_STAT_RX_ENTRY(csum_good),
93 ENA_STAT_RX_ENTRY(refil_partial),
94 ENA_STAT_RX_ENTRY(bad_csum),
95 ENA_STAT_RX_ENTRY(page_alloc_fail),
96 ENA_STAT_RX_ENTRY(skb_alloc_fail),
97 ENA_STAT_RX_ENTRY(dma_mapping_err),
98 ENA_STAT_RX_ENTRY(bad_desc_num),
99 ENA_STAT_RX_ENTRY(bad_req_id),
100 ENA_STAT_RX_ENTRY(empty_rx_ring),
101 ENA_STAT_RX_ENTRY(csum_unchecked),
102 };
103
104 static const struct ena_stats ena_stats_ena_com_strings[] = {
105 ENA_STAT_ENA_COM_ENTRY(aborted_cmd),
106 ENA_STAT_ENA_COM_ENTRY(submitted_cmd),
107 ENA_STAT_ENA_COM_ENTRY(completed_cmd),
108 ENA_STAT_ENA_COM_ENTRY(out_of_space),
109 ENA_STAT_ENA_COM_ENTRY(no_completion),
110 };
111
112 #define ENA_STATS_ARRAY_GLOBAL ARRAY_SIZE(ena_stats_global_strings)
113 #define ENA_STATS_ARRAY_TX ARRAY_SIZE(ena_stats_tx_strings)
114 #define ENA_STATS_ARRAY_RX ARRAY_SIZE(ena_stats_rx_strings)
115 #define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings)
116
117 static void ena_safe_update_stat(u64 *src, u64 *dst,
118 struct u64_stats_sync *syncp)
119 {
120 unsigned int start;
121
122 do {
123 start = u64_stats_fetch_begin_irq(syncp);
124 *(dst) = *src;
125 } while (u64_stats_fetch_retry_irq(syncp, start));
126 }
127
128 static void ena_queue_stats(struct ena_adapter *adapter, u64 **data)
129 {
130 const struct ena_stats *ena_stats;
131 struct ena_ring *ring;
132
133 u64 *ptr;
134 int i, j;
135
136 for (i = 0; i < adapter->num_io_queues; i++) {
137 /* Tx stats */
138 ring = &adapter->tx_ring[i];
139
140 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
141 ena_stats = &ena_stats_tx_strings[j];
142
143 ptr = (u64 *)((uintptr_t)&ring->tx_stats +
144 (uintptr_t)ena_stats->stat_offset);
145
146 ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
147 }
148
149 /* Rx stats */
150 ring = &adapter->rx_ring[i];
151
152 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
153 ena_stats = &ena_stats_rx_strings[j];
154
155 ptr = (u64 *)((uintptr_t)&ring->rx_stats +
156 (uintptr_t)ena_stats->stat_offset);
157
158 ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
159 }
160 }
161 }
162
163 static void ena_dev_admin_queue_stats(struct ena_adapter *adapter, u64 **data)
164 {
165 const struct ena_stats *ena_stats;
166 u32 *ptr;
167 int i;
168
169 for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
170 ena_stats = &ena_stats_ena_com_strings[i];
171
172 ptr = (u32 *)((uintptr_t)&adapter->ena_dev->admin_queue.stats +
173 (uintptr_t)ena_stats->stat_offset);
174
175 *(*data)++ = *ptr;
176 }
177 }
178
179 static void ena_get_ethtool_stats(struct net_device *netdev,
180 struct ethtool_stats *stats,
181 u64 *data)
182 {
183 struct ena_adapter *adapter = netdev_priv(netdev);
184 const struct ena_stats *ena_stats;
185 u64 *ptr;
186 int i;
187
188 for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
189 ena_stats = &ena_stats_global_strings[i];
190
191 ptr = (u64 *)((uintptr_t)&adapter->dev_stats +
192 (uintptr_t)ena_stats->stat_offset);
193
194 ena_safe_update_stat(ptr, data++, &adapter->syncp);
195 }
196
197 ena_queue_stats(adapter, &data);
198 ena_dev_admin_queue_stats(adapter, &data);
199 }
200
201 int ena_get_sset_count(struct net_device *netdev, int sset)
202 {
203 struct ena_adapter *adapter = netdev_priv(netdev);
204
205 if (sset != ETH_SS_STATS)
206 return -EOPNOTSUPP;
207
208 return adapter->num_io_queues * (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX)
209 + ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
210 }
211
212 static void ena_queue_strings(struct ena_adapter *adapter, u8 **data)
213 {
214 const struct ena_stats *ena_stats;
215 int i, j;
216
217 for (i = 0; i < adapter->num_io_queues; i++) {
218 /* Tx stats */
219 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
220 ena_stats = &ena_stats_tx_strings[j];
221
222 snprintf(*data, ETH_GSTRING_LEN,
223 "queue_%u_tx_%s", i, ena_stats->name);
224 (*data) += ETH_GSTRING_LEN;
225 }
226 /* Rx stats */
227 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
228 ena_stats = &ena_stats_rx_strings[j];
229
230 snprintf(*data, ETH_GSTRING_LEN,
231 "queue_%u_rx_%s", i, ena_stats->name);
232 (*data) += ETH_GSTRING_LEN;
233 }
234 }
235 }
236
237 static void ena_com_dev_strings(u8 **data)
238 {
239 const struct ena_stats *ena_stats;
240 int i;
241
242 for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
243 ena_stats = &ena_stats_ena_com_strings[i];
244
245 snprintf(*data, ETH_GSTRING_LEN,
246 "ena_admin_q_%s", ena_stats->name);
247 (*data) += ETH_GSTRING_LEN;
248 }
249 }
250
251 static void ena_get_strings(struct net_device *netdev, u32 sset, u8 *data)
252 {
253 struct ena_adapter *adapter = netdev_priv(netdev);
254 const struct ena_stats *ena_stats;
255 int i;
256
257 if (sset != ETH_SS_STATS)
258 return;
259
260 for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
261 ena_stats = &ena_stats_global_strings[i];
262
263 memcpy(data, ena_stats->name, ETH_GSTRING_LEN);
264 data += ETH_GSTRING_LEN;
265 }
266
267 ena_queue_strings(adapter, &data);
268 ena_com_dev_strings(&data);
269 }
270
271 static int ena_get_link_ksettings(struct net_device *netdev,
272 struct ethtool_link_ksettings *link_ksettings)
273 {
274 struct ena_adapter *adapter = netdev_priv(netdev);
275 struct ena_com_dev *ena_dev = adapter->ena_dev;
276 struct ena_admin_get_feature_link_desc *link;
277 struct ena_admin_get_feat_resp feat_resp;
278 int rc;
279
280 rc = ena_com_get_link_params(ena_dev, &feat_resp);
281 if (rc)
282 return rc;
283
284 link = &feat_resp.u.link;
285 link_ksettings->base.speed = link->speed;
286
287 if (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) {
288 ethtool_link_ksettings_add_link_mode(link_ksettings,
289 supported, Autoneg);
290 ethtool_link_ksettings_add_link_mode(link_ksettings,
291 supported, Autoneg);
292 }
293
294 link_ksettings->base.autoneg =
295 (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) ?
296 AUTONEG_ENABLE : AUTONEG_DISABLE;
297
298 link_ksettings->base.duplex = DUPLEX_FULL;
299
300 return 0;
301 }
302
303 static int ena_get_coalesce(struct net_device *net_dev,
304 struct ethtool_coalesce *coalesce)
305 {
306 struct ena_adapter *adapter = netdev_priv(net_dev);
307 struct ena_com_dev *ena_dev = adapter->ena_dev;
308
309 if (!ena_com_interrupt_moderation_supported(ena_dev)) {
310 /* the devie doesn't support interrupt moderation */
311 return -EOPNOTSUPP;
312 }
313
314 coalesce->tx_coalesce_usecs =
315 ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) *
316 ena_dev->intr_delay_resolution;
317
318 coalesce->rx_coalesce_usecs =
319 ena_com_get_nonadaptive_moderation_interval_rx(ena_dev)
320 * ena_dev->intr_delay_resolution;
321
322 coalesce->use_adaptive_rx_coalesce =
323 ena_com_get_adaptive_moderation_enabled(ena_dev);
324
325 return 0;
326 }
327
328 static void ena_update_tx_rings_intr_moderation(struct ena_adapter *adapter)
329 {
330 unsigned int val;
331 int i;
332
333 val = ena_com_get_nonadaptive_moderation_interval_tx(adapter->ena_dev);
334
335 for (i = 0; i < adapter->num_io_queues; i++)
336 adapter->tx_ring[i].smoothed_interval = val;
337 }
338
339 static void ena_update_rx_rings_intr_moderation(struct ena_adapter *adapter)
340 {
341 unsigned int val;
342 int i;
343
344 val = ena_com_get_nonadaptive_moderation_interval_rx(adapter->ena_dev);
345
346 for (i = 0; i < adapter->num_io_queues; i++)
347 adapter->rx_ring[i].smoothed_interval = val;
348 }
349
350 static int ena_set_coalesce(struct net_device *net_dev,
351 struct ethtool_coalesce *coalesce)
352 {
353 struct ena_adapter *adapter = netdev_priv(net_dev);
354 struct ena_com_dev *ena_dev = adapter->ena_dev;
355 int rc;
356
357 if (!ena_com_interrupt_moderation_supported(ena_dev)) {
358 /* the devie doesn't support interrupt moderation */
359 return -EOPNOTSUPP;
360 }
361
362 rc = ena_com_update_nonadaptive_moderation_interval_tx(ena_dev,
363 coalesce->tx_coalesce_usecs);
364 if (rc)
365 return rc;
366
367 ena_update_tx_rings_intr_moderation(adapter);
368
369 rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
370 coalesce->rx_coalesce_usecs);
371 if (rc)
372 return rc;
373
374 ena_update_rx_rings_intr_moderation(adapter);
375
376 if (coalesce->use_adaptive_rx_coalesce &&
377 !ena_com_get_adaptive_moderation_enabled(ena_dev))
378 ena_com_enable_adaptive_moderation(ena_dev);
379
380 if (!coalesce->use_adaptive_rx_coalesce &&
381 ena_com_get_adaptive_moderation_enabled(ena_dev))
382 ena_com_disable_adaptive_moderation(ena_dev);
383
384 return 0;
385 }
386
387 static u32 ena_get_msglevel(struct net_device *netdev)
388 {
389 struct ena_adapter *adapter = netdev_priv(netdev);
390
391 return adapter->msg_enable;
392 }
393
394 static void ena_set_msglevel(struct net_device *netdev, u32 value)
395 {
396 struct ena_adapter *adapter = netdev_priv(netdev);
397
398 adapter->msg_enable = value;
399 }
400
401 static void ena_get_drvinfo(struct net_device *dev,
402 struct ethtool_drvinfo *info)
403 {
404 struct ena_adapter *adapter = netdev_priv(dev);
405
406 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
407 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
408 strlcpy(info->bus_info, pci_name(adapter->pdev),
409 sizeof(info->bus_info));
410 }
411
412 static void ena_get_ringparam(struct net_device *netdev,
413 struct ethtool_ringparam *ring)
414 {
415 struct ena_adapter *adapter = netdev_priv(netdev);
416
417 ring->tx_max_pending = adapter->max_tx_ring_size;
418 ring->rx_max_pending = adapter->max_rx_ring_size;
419 ring->tx_pending = adapter->tx_ring[0].ring_size;
420 ring->rx_pending = adapter->rx_ring[0].ring_size;
421 }
422
423 static int ena_set_ringparam(struct net_device *netdev,
424 struct ethtool_ringparam *ring)
425 {
426 struct ena_adapter *adapter = netdev_priv(netdev);
427 u32 new_tx_size, new_rx_size;
428
429 new_tx_size = ring->tx_pending < ENA_MIN_RING_SIZE ?
430 ENA_MIN_RING_SIZE : ring->tx_pending;
431 new_tx_size = rounddown_pow_of_two(new_tx_size);
432
433 new_rx_size = ring->rx_pending < ENA_MIN_RING_SIZE ?
434 ENA_MIN_RING_SIZE : ring->rx_pending;
435 new_rx_size = rounddown_pow_of_two(new_rx_size);
436
437 if (new_tx_size == adapter->requested_tx_ring_size &&
438 new_rx_size == adapter->requested_rx_ring_size)
439 return 0;
440
441 return ena_update_queue_sizes(adapter, new_tx_size, new_rx_size);
442 }
443
444 static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
445 {
446 u32 data = 0;
447
448 if (hash_fields & ENA_ADMIN_RSS_L2_DA)
449 data |= RXH_L2DA;
450
451 if (hash_fields & ENA_ADMIN_RSS_L3_DA)
452 data |= RXH_IP_DST;
453
454 if (hash_fields & ENA_ADMIN_RSS_L3_SA)
455 data |= RXH_IP_SRC;
456
457 if (hash_fields & ENA_ADMIN_RSS_L4_DP)
458 data |= RXH_L4_B_2_3;
459
460 if (hash_fields & ENA_ADMIN_RSS_L4_SP)
461 data |= RXH_L4_B_0_1;
462
463 return data;
464 }
465
466 static u16 ena_flow_data_to_flow_hash(u32 hash_fields)
467 {
468 u16 data = 0;
469
470 if (hash_fields & RXH_L2DA)
471 data |= ENA_ADMIN_RSS_L2_DA;
472
473 if (hash_fields & RXH_IP_DST)
474 data |= ENA_ADMIN_RSS_L3_DA;
475
476 if (hash_fields & RXH_IP_SRC)
477 data |= ENA_ADMIN_RSS_L3_SA;
478
479 if (hash_fields & RXH_L4_B_2_3)
480 data |= ENA_ADMIN_RSS_L4_DP;
481
482 if (hash_fields & RXH_L4_B_0_1)
483 data |= ENA_ADMIN_RSS_L4_SP;
484
485 return data;
486 }
487
488 static int ena_get_rss_hash(struct ena_com_dev *ena_dev,
489 struct ethtool_rxnfc *cmd)
490 {
491 enum ena_admin_flow_hash_proto proto;
492 u16 hash_fields;
493 int rc;
494
495 cmd->data = 0;
496
497 switch (cmd->flow_type) {
498 case TCP_V4_FLOW:
499 proto = ENA_ADMIN_RSS_TCP4;
500 break;
501 case UDP_V4_FLOW:
502 proto = ENA_ADMIN_RSS_UDP4;
503 break;
504 case TCP_V6_FLOW:
505 proto = ENA_ADMIN_RSS_TCP6;
506 break;
507 case UDP_V6_FLOW:
508 proto = ENA_ADMIN_RSS_UDP6;
509 break;
510 case IPV4_FLOW:
511 proto = ENA_ADMIN_RSS_IP4;
512 break;
513 case IPV6_FLOW:
514 proto = ENA_ADMIN_RSS_IP6;
515 break;
516 case ETHER_FLOW:
517 proto = ENA_ADMIN_RSS_NOT_IP;
518 break;
519 case AH_V4_FLOW:
520 case ESP_V4_FLOW:
521 case AH_V6_FLOW:
522 case ESP_V6_FLOW:
523 case SCTP_V4_FLOW:
524 case AH_ESP_V4_FLOW:
525 return -EOPNOTSUPP;
526 default:
527 return -EINVAL;
528 }
529
530 rc = ena_com_get_hash_ctrl(ena_dev, proto, &hash_fields);
531 if (rc)
532 return rc;
533
534 cmd->data = ena_flow_hash_to_flow_type(hash_fields);
535
536 return 0;
537 }
538
539 static int ena_set_rss_hash(struct ena_com_dev *ena_dev,
540 struct ethtool_rxnfc *cmd)
541 {
542 enum ena_admin_flow_hash_proto proto;
543 u16 hash_fields;
544
545 switch (cmd->flow_type) {
546 case TCP_V4_FLOW:
547 proto = ENA_ADMIN_RSS_TCP4;
548 break;
549 case UDP_V4_FLOW:
550 proto = ENA_ADMIN_RSS_UDP4;
551 break;
552 case TCP_V6_FLOW:
553 proto = ENA_ADMIN_RSS_TCP6;
554 break;
555 case UDP_V6_FLOW:
556 proto = ENA_ADMIN_RSS_UDP6;
557 break;
558 case IPV4_FLOW:
559 proto = ENA_ADMIN_RSS_IP4;
560 break;
561 case IPV6_FLOW:
562 proto = ENA_ADMIN_RSS_IP6;
563 break;
564 case ETHER_FLOW:
565 proto = ENA_ADMIN_RSS_NOT_IP;
566 break;
567 case AH_V4_FLOW:
568 case ESP_V4_FLOW:
569 case AH_V6_FLOW:
570 case ESP_V6_FLOW:
571 case SCTP_V4_FLOW:
572 case AH_ESP_V4_FLOW:
573 return -EOPNOTSUPP;
574 default:
575 return -EINVAL;
576 }
577
578 hash_fields = ena_flow_data_to_flow_hash(cmd->data);
579
580 return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields);
581 }
582
583 static int ena_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
584 {
585 struct ena_adapter *adapter = netdev_priv(netdev);
586 int rc = 0;
587
588 switch (info->cmd) {
589 case ETHTOOL_SRXFH:
590 rc = ena_set_rss_hash(adapter->ena_dev, info);
591 break;
592 case ETHTOOL_SRXCLSRLDEL:
593 case ETHTOOL_SRXCLSRLINS:
594 default:
595 netif_err(adapter, drv, netdev,
596 "Command parameter %d is not supported\n", info->cmd);
597 rc = -EOPNOTSUPP;
598 }
599
600 return rc;
601 }
602
603 static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
604 u32 *rules)
605 {
606 struct ena_adapter *adapter = netdev_priv(netdev);
607 int rc = 0;
608
609 switch (info->cmd) {
610 case ETHTOOL_GRXRINGS:
611 info->data = adapter->num_io_queues;
612 rc = 0;
613 break;
614 case ETHTOOL_GRXFH:
615 rc = ena_get_rss_hash(adapter->ena_dev, info);
616 break;
617 case ETHTOOL_GRXCLSRLCNT:
618 case ETHTOOL_GRXCLSRULE:
619 case ETHTOOL_GRXCLSRLALL:
620 default:
621 netif_err(adapter, drv, netdev,
622 "Command parameter %d is not supported\n", info->cmd);
623 rc = -EOPNOTSUPP;
624 }
625
626 return rc;
627 }
628
629 static u32 ena_get_rxfh_indir_size(struct net_device *netdev)
630 {
631 return ENA_RX_RSS_TABLE_SIZE;
632 }
633
634 static u32 ena_get_rxfh_key_size(struct net_device *netdev)
635 {
636 return ENA_HASH_KEY_SIZE;
637 }
638
639 static int ena_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
640 u8 *hfunc)
641 {
642 struct ena_adapter *adapter = netdev_priv(netdev);
643 enum ena_admin_hash_functions ena_func;
644 u8 func;
645 int rc;
646
647 rc = ena_com_indirect_table_get(adapter->ena_dev, indir);
648 if (rc)
649 return rc;
650
651 rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func, key);
652 if (rc)
653 return rc;
654
655 switch (ena_func) {
656 case ENA_ADMIN_TOEPLITZ:
657 func = ETH_RSS_HASH_TOP;
658 break;
659 case ENA_ADMIN_CRC32:
660 func = ETH_RSS_HASH_XOR;
661 break;
662 default:
663 netif_err(adapter, drv, netdev,
664 "Command parameter is not supported\n");
665 return -EOPNOTSUPP;
666 }
667
668 if (hfunc)
669 *hfunc = func;
670
671 return rc;
672 }
673
674 static int ena_set_rxfh(struct net_device *netdev, const u32 *indir,
675 const u8 *key, const u8 hfunc)
676 {
677 struct ena_adapter *adapter = netdev_priv(netdev);
678 struct ena_com_dev *ena_dev = adapter->ena_dev;
679 enum ena_admin_hash_functions func;
680 int rc, i;
681
682 if (indir) {
683 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
684 rc = ena_com_indirect_table_fill_entry(ena_dev,
685 i,
686 ENA_IO_RXQ_IDX(indir[i]));
687 if (unlikely(rc)) {
688 netif_err(adapter, drv, netdev,
689 "Cannot fill indirect table (index is too large)\n");
690 return rc;
691 }
692 }
693
694 rc = ena_com_indirect_table_set(ena_dev);
695 if (rc) {
696 netif_err(adapter, drv, netdev,
697 "Cannot set indirect table\n");
698 return rc == -EPERM ? -EOPNOTSUPP : rc;
699 }
700 }
701
702 switch (hfunc) {
703 case ETH_RSS_HASH_TOP:
704 func = ENA_ADMIN_TOEPLITZ;
705 break;
706 case ETH_RSS_HASH_XOR:
707 func = ENA_ADMIN_CRC32;
708 break;
709 default:
710 netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n",
711 hfunc);
712 return -EOPNOTSUPP;
713 }
714
715 if (key) {
716 rc = ena_com_fill_hash_function(ena_dev, func, key,
717 ENA_HASH_KEY_SIZE,
718 0xFFFFFFFF);
719 if (unlikely(rc)) {
720 netif_err(adapter, drv, netdev, "Cannot fill key\n");
721 return rc == -EPERM ? -EOPNOTSUPP : rc;
722 }
723 }
724
725 return 0;
726 }
727
728 static void ena_get_channels(struct net_device *netdev,
729 struct ethtool_channels *channels)
730 {
731 struct ena_adapter *adapter = netdev_priv(netdev);
732
733 channels->max_combined = adapter->max_num_io_queues;
734 channels->combined_count = adapter->num_io_queues;
735 }
736
737 static int ena_set_channels(struct net_device *netdev,
738 struct ethtool_channels *channels)
739 {
740 struct ena_adapter *adapter = netdev_priv(netdev);
741 u32 count = channels->combined_count;
742 /* The check for max value is already done in ethtool */
743 if (count < ENA_MIN_NUM_IO_QUEUES ||
744 (ena_xdp_present(adapter) &&
745 !ena_xdp_legal_queue_count(adapter, channels->combined_count)))
746 return -EINVAL;
747
748 return ena_update_queue_count(adapter, count);
749 }
750
751 static int ena_get_tunable(struct net_device *netdev,
752 const struct ethtool_tunable *tuna, void *data)
753 {
754 struct ena_adapter *adapter = netdev_priv(netdev);
755 int ret = 0;
756
757 switch (tuna->id) {
758 case ETHTOOL_RX_COPYBREAK:
759 *(u32 *)data = adapter->rx_copybreak;
760 break;
761 default:
762 ret = -EINVAL;
763 break;
764 }
765
766 return ret;
767 }
768
769 static int ena_set_tunable(struct net_device *netdev,
770 const struct ethtool_tunable *tuna,
771 const void *data)
772 {
773 struct ena_adapter *adapter = netdev_priv(netdev);
774 int ret = 0;
775 u32 len;
776
777 switch (tuna->id) {
778 case ETHTOOL_RX_COPYBREAK:
779 len = *(u32 *)data;
780 if (len > adapter->netdev->mtu) {
781 ret = -EINVAL;
782 break;
783 }
784 adapter->rx_copybreak = len;
785 break;
786 default:
787 ret = -EINVAL;
788 break;
789 }
790
791 return ret;
792 }
793
794 static const struct ethtool_ops ena_ethtool_ops = {
795 .get_link_ksettings = ena_get_link_ksettings,
796 .get_drvinfo = ena_get_drvinfo,
797 .get_msglevel = ena_get_msglevel,
798 .set_msglevel = ena_set_msglevel,
799 .get_link = ethtool_op_get_link,
800 .get_coalesce = ena_get_coalesce,
801 .set_coalesce = ena_set_coalesce,
802 .get_ringparam = ena_get_ringparam,
803 .set_ringparam = ena_set_ringparam,
804 .get_sset_count = ena_get_sset_count,
805 .get_strings = ena_get_strings,
806 .get_ethtool_stats = ena_get_ethtool_stats,
807 .get_rxnfc = ena_get_rxnfc,
808 .set_rxnfc = ena_set_rxnfc,
809 .get_rxfh_indir_size = ena_get_rxfh_indir_size,
810 .get_rxfh_key_size = ena_get_rxfh_key_size,
811 .get_rxfh = ena_get_rxfh,
812 .set_rxfh = ena_set_rxfh,
813 .get_channels = ena_get_channels,
814 .set_channels = ena_set_channels,
815 .get_tunable = ena_get_tunable,
816 .set_tunable = ena_set_tunable,
817 };
818
819 void ena_set_ethtool_ops(struct net_device *netdev)
820 {
821 netdev->ethtool_ops = &ena_ethtool_ops;
822 }
823
824 static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
825 {
826 struct net_device *netdev = adapter->netdev;
827 u8 *strings_buf;
828 u64 *data_buf;
829 int strings_num;
830 int i, rc;
831
832 strings_num = ena_get_sset_count(netdev, ETH_SS_STATS);
833 if (strings_num <= 0) {
834 netif_err(adapter, drv, netdev, "Can't get stats num\n");
835 return;
836 }
837
838 strings_buf = devm_kcalloc(&adapter->pdev->dev,
839 ETH_GSTRING_LEN, strings_num,
840 GFP_ATOMIC);
841 if (!strings_buf) {
842 netif_err(adapter, drv, netdev,
843 "failed to alloc strings_buf\n");
844 return;
845 }
846
847 data_buf = devm_kcalloc(&adapter->pdev->dev,
848 strings_num, sizeof(u64),
849 GFP_ATOMIC);
850 if (!data_buf) {
851 netif_err(adapter, drv, netdev,
852 "failed to allocate data buf\n");
853 devm_kfree(&adapter->pdev->dev, strings_buf);
854 return;
855 }
856
857 ena_get_strings(netdev, ETH_SS_STATS, strings_buf);
858 ena_get_ethtool_stats(netdev, NULL, data_buf);
859
860 /* If there is a buffer, dump stats, otherwise print them to dmesg */
861 if (buf)
862 for (i = 0; i < strings_num; i++) {
863 rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
864 "%s %llu\n",
865 strings_buf + i * ETH_GSTRING_LEN,
866 data_buf[i]);
867 buf += rc;
868 }
869 else
870 for (i = 0; i < strings_num; i++)
871 netif_err(adapter, drv, netdev, "%s: %llu\n",
872 strings_buf + i * ETH_GSTRING_LEN,
873 data_buf[i]);
874
875 devm_kfree(&adapter->pdev->dev, strings_buf);
876 devm_kfree(&adapter->pdev->dev, data_buf);
877 }
878
879 void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)
880 {
881 if (!buf)
882 return;
883
884 ena_dump_stats_ex(adapter, buf);
885 }
886
887 void ena_dump_stats_to_dmesg(struct ena_adapter *adapter)
888 {
889 ena_dump_stats_ex(adapter, NULL);
890 }
Linux with added FPC-III support