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
ena_safe_update_stat(u64 * src,u64 * dst,struct u64_stats_sync * syncp)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
ena_queue_stats(struct ena_adapter * adapter,u64 ** data)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_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
ena_dev_admin_queue_stats(struct ena_adapter * adapter,u64 ** data)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
ena_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)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
ena_get_sset_count(struct net_device * netdev,int sset)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_queues * (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX)
209 + ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
210 }
211
ena_queue_strings(struct ena_adapter * adapter,u8 ** data)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_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
ena_com_dev_strings(u8 ** data)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
ena_get_strings(struct net_device * netdev,u32 sset,u8 * data)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
ena_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * link_ksettings)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
ena_get_coalesce(struct net_device * net_dev,struct ethtool_coalesce * coalesce)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 if (!ena_com_get_adaptive_moderation_enabled(ena_dev))
319 coalesce->rx_coalesce_usecs =
320 ena_com_get_nonadaptive_moderation_interval_rx(ena_dev)
321 * ena_dev->intr_delay_resolution;
322
323 coalesce->use_adaptive_rx_coalesce =
324 ena_com_get_adaptive_moderation_enabled(ena_dev);
325
326 return 0;
327 }
328
ena_update_tx_rings_intr_moderation(struct ena_adapter * adapter)329 static void ena_update_tx_rings_intr_moderation(struct ena_adapter *adapter)
330 {
331 unsigned int val;
332 int i;
333
334 val = ena_com_get_nonadaptive_moderation_interval_tx(adapter->ena_dev);
335
336 for (i = 0; i < adapter->num_queues; i++)
337 adapter->tx_ring[i].smoothed_interval = val;
338 }
339
ena_update_rx_rings_intr_moderation(struct ena_adapter * adapter)340 static void ena_update_rx_rings_intr_moderation(struct ena_adapter *adapter)
341 {
342 unsigned int val;
343 int i;
344
345 val = ena_com_get_nonadaptive_moderation_interval_rx(adapter->ena_dev);
346
347 for (i = 0; i < adapter->num_queues; i++)
348 adapter->rx_ring[i].smoothed_interval = val;
349 }
350
ena_set_coalesce(struct net_device * net_dev,struct ethtool_coalesce * coalesce)351 static int ena_set_coalesce(struct net_device *net_dev,
352 struct ethtool_coalesce *coalesce)
353 {
354 struct ena_adapter *adapter = netdev_priv(net_dev);
355 struct ena_com_dev *ena_dev = adapter->ena_dev;
356 int rc;
357
358 if (!ena_com_interrupt_moderation_supported(ena_dev)) {
359 /* the devie doesn't support interrupt moderation */
360 return -EOPNOTSUPP;
361 }
362
363 rc = ena_com_update_nonadaptive_moderation_interval_tx(ena_dev,
364 coalesce->tx_coalesce_usecs);
365 if (rc)
366 return rc;
367
368 ena_update_tx_rings_intr_moderation(adapter);
369
370 if (coalesce->use_adaptive_rx_coalesce) {
371 if (!ena_com_get_adaptive_moderation_enabled(ena_dev))
372 ena_com_enable_adaptive_moderation(ena_dev);
373 return 0;
374 }
375
376 rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
377 coalesce->rx_coalesce_usecs);
378 if (rc)
379 return rc;
380
381 ena_update_rx_rings_intr_moderation(adapter);
382
383 if (!coalesce->use_adaptive_rx_coalesce) {
384 if (ena_com_get_adaptive_moderation_enabled(ena_dev))
385 ena_com_disable_adaptive_moderation(ena_dev);
386 }
387
388 return 0;
389 }
390
ena_get_msglevel(struct net_device * netdev)391 static u32 ena_get_msglevel(struct net_device *netdev)
392 {
393 struct ena_adapter *adapter = netdev_priv(netdev);
394
395 return adapter->msg_enable;
396 }
397
ena_set_msglevel(struct net_device * netdev,u32 value)398 static void ena_set_msglevel(struct net_device *netdev, u32 value)
399 {
400 struct ena_adapter *adapter = netdev_priv(netdev);
401
402 adapter->msg_enable = value;
403 }
404
ena_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)405 static void ena_get_drvinfo(struct net_device *dev,
406 struct ethtool_drvinfo *info)
407 {
408 struct ena_adapter *adapter = netdev_priv(dev);
409
410 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
411 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
412 strlcpy(info->bus_info, pci_name(adapter->pdev),
413 sizeof(info->bus_info));
414 }
415
ena_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)416 static void ena_get_ringparam(struct net_device *netdev,
417 struct ethtool_ringparam *ring)
418 {
419 struct ena_adapter *adapter = netdev_priv(netdev);
420
421 ring->tx_max_pending = adapter->max_tx_ring_size;
422 ring->rx_max_pending = adapter->max_rx_ring_size;
423 ring->tx_pending = adapter->tx_ring[0].ring_size;
424 ring->rx_pending = adapter->rx_ring[0].ring_size;
425 }
426
ena_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)427 static int ena_set_ringparam(struct net_device *netdev,
428 struct ethtool_ringparam *ring)
429 {
430 struct ena_adapter *adapter = netdev_priv(netdev);
431 u32 new_tx_size, new_rx_size;
432
433 new_tx_size = ring->tx_pending < ENA_MIN_RING_SIZE ?
434 ENA_MIN_RING_SIZE : ring->tx_pending;
435 new_tx_size = rounddown_pow_of_two(new_tx_size);
436
437 new_rx_size = ring->rx_pending < ENA_MIN_RING_SIZE ?
438 ENA_MIN_RING_SIZE : ring->rx_pending;
439 new_rx_size = rounddown_pow_of_two(new_rx_size);
440
441 if (new_tx_size == adapter->requested_tx_ring_size &&
442 new_rx_size == adapter->requested_rx_ring_size)
443 return 0;
444
445 return ena_update_queue_sizes(adapter, new_tx_size, new_rx_size);
446 }
447
ena_flow_hash_to_flow_type(u16 hash_fields)448 static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
449 {
450 u32 data = 0;
451
452 if (hash_fields & ENA_ADMIN_RSS_L2_DA)
453 data |= RXH_L2DA;
454
455 if (hash_fields & ENA_ADMIN_RSS_L3_DA)
456 data |= RXH_IP_DST;
457
458 if (hash_fields & ENA_ADMIN_RSS_L3_SA)
459 data |= RXH_IP_SRC;
460
461 if (hash_fields & ENA_ADMIN_RSS_L4_DP)
462 data |= RXH_L4_B_2_3;
463
464 if (hash_fields & ENA_ADMIN_RSS_L4_SP)
465 data |= RXH_L4_B_0_1;
466
467 return data;
468 }
469
ena_flow_data_to_flow_hash(u32 hash_fields)470 static u16 ena_flow_data_to_flow_hash(u32 hash_fields)
471 {
472 u16 data = 0;
473
474 if (hash_fields & RXH_L2DA)
475 data |= ENA_ADMIN_RSS_L2_DA;
476
477 if (hash_fields & RXH_IP_DST)
478 data |= ENA_ADMIN_RSS_L3_DA;
479
480 if (hash_fields & RXH_IP_SRC)
481 data |= ENA_ADMIN_RSS_L3_SA;
482
483 if (hash_fields & RXH_L4_B_2_3)
484 data |= ENA_ADMIN_RSS_L4_DP;
485
486 if (hash_fields & RXH_L4_B_0_1)
487 data |= ENA_ADMIN_RSS_L4_SP;
488
489 return data;
490 }
491
ena_get_rss_hash(struct ena_com_dev * ena_dev,struct ethtool_rxnfc * cmd)492 static int ena_get_rss_hash(struct ena_com_dev *ena_dev,
493 struct ethtool_rxnfc *cmd)
494 {
495 enum ena_admin_flow_hash_proto proto;
496 u16 hash_fields;
497 int rc;
498
499 cmd->data = 0;
500
501 switch (cmd->flow_type) {
502 case TCP_V4_FLOW:
503 proto = ENA_ADMIN_RSS_TCP4;
504 break;
505 case UDP_V4_FLOW:
506 proto = ENA_ADMIN_RSS_UDP4;
507 break;
508 case TCP_V6_FLOW:
509 proto = ENA_ADMIN_RSS_TCP6;
510 break;
511 case UDP_V6_FLOW:
512 proto = ENA_ADMIN_RSS_UDP6;
513 break;
514 case IPV4_FLOW:
515 proto = ENA_ADMIN_RSS_IP4;
516 break;
517 case IPV6_FLOW:
518 proto = ENA_ADMIN_RSS_IP6;
519 break;
520 case ETHER_FLOW:
521 proto = ENA_ADMIN_RSS_NOT_IP;
522 break;
523 case AH_V4_FLOW:
524 case ESP_V4_FLOW:
525 case AH_V6_FLOW:
526 case ESP_V6_FLOW:
527 case SCTP_V4_FLOW:
528 case AH_ESP_V4_FLOW:
529 return -EOPNOTSUPP;
530 default:
531 return -EINVAL;
532 }
533
534 rc = ena_com_get_hash_ctrl(ena_dev, proto, &hash_fields);
535 if (rc)
536 return rc;
537
538 cmd->data = ena_flow_hash_to_flow_type(hash_fields);
539
540 return 0;
541 }
542
ena_set_rss_hash(struct ena_com_dev * ena_dev,struct ethtool_rxnfc * cmd)543 static int ena_set_rss_hash(struct ena_com_dev *ena_dev,
544 struct ethtool_rxnfc *cmd)
545 {
546 enum ena_admin_flow_hash_proto proto;
547 u16 hash_fields;
548
549 switch (cmd->flow_type) {
550 case TCP_V4_FLOW:
551 proto = ENA_ADMIN_RSS_TCP4;
552 break;
553 case UDP_V4_FLOW:
554 proto = ENA_ADMIN_RSS_UDP4;
555 break;
556 case TCP_V6_FLOW:
557 proto = ENA_ADMIN_RSS_TCP6;
558 break;
559 case UDP_V6_FLOW:
560 proto = ENA_ADMIN_RSS_UDP6;
561 break;
562 case IPV4_FLOW:
563 proto = ENA_ADMIN_RSS_IP4;
564 break;
565 case IPV6_FLOW:
566 proto = ENA_ADMIN_RSS_IP6;
567 break;
568 case ETHER_FLOW:
569 proto = ENA_ADMIN_RSS_NOT_IP;
570 break;
571 case AH_V4_FLOW:
572 case ESP_V4_FLOW:
573 case AH_V6_FLOW:
574 case ESP_V6_FLOW:
575 case SCTP_V4_FLOW:
576 case AH_ESP_V4_FLOW:
577 return -EOPNOTSUPP;
578 default:
579 return -EINVAL;
580 }
581
582 hash_fields = ena_flow_data_to_flow_hash(cmd->data);
583
584 return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields);
585 }
586
ena_set_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info)587 static int ena_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
588 {
589 struct ena_adapter *adapter = netdev_priv(netdev);
590 int rc = 0;
591
592 switch (info->cmd) {
593 case ETHTOOL_SRXFH:
594 rc = ena_set_rss_hash(adapter->ena_dev, info);
595 break;
596 case ETHTOOL_SRXCLSRLDEL:
597 case ETHTOOL_SRXCLSRLINS:
598 default:
599 netif_err(adapter, drv, netdev,
600 "Command parameter %d is not supported\n", info->cmd);
601 rc = -EOPNOTSUPP;
602 }
603
604 return rc;
605 }
606
ena_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info,u32 * rules)607 static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
608 u32 *rules)
609 {
610 struct ena_adapter *adapter = netdev_priv(netdev);
611 int rc = 0;
612
613 switch (info->cmd) {
614 case ETHTOOL_GRXRINGS:
615 info->data = adapter->num_queues;
616 rc = 0;
617 break;
618 case ETHTOOL_GRXFH:
619 rc = ena_get_rss_hash(adapter->ena_dev, info);
620 break;
621 case ETHTOOL_GRXCLSRLCNT:
622 case ETHTOOL_GRXCLSRULE:
623 case ETHTOOL_GRXCLSRLALL:
624 default:
625 netif_err(adapter, drv, netdev,
626 "Command parameter %d is not supported\n", info->cmd);
627 rc = -EOPNOTSUPP;
628 }
629
630 return rc;
631 }
632
ena_get_rxfh_indir_size(struct net_device * netdev)633 static u32 ena_get_rxfh_indir_size(struct net_device *netdev)
634 {
635 return ENA_RX_RSS_TABLE_SIZE;
636 }
637
ena_get_rxfh_key_size(struct net_device * netdev)638 static u32 ena_get_rxfh_key_size(struct net_device *netdev)
639 {
640 return ENA_HASH_KEY_SIZE;
641 }
642
ena_get_rxfh(struct net_device * netdev,u32 * indir,u8 * key,u8 * hfunc)643 static int ena_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
644 u8 *hfunc)
645 {
646 struct ena_adapter *adapter = netdev_priv(netdev);
647 enum ena_admin_hash_functions ena_func;
648 u8 func;
649 int rc;
650
651 rc = ena_com_indirect_table_get(adapter->ena_dev, indir);
652 if (rc)
653 return rc;
654
655 rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func, key);
656 if (rc)
657 return rc;
658
659 switch (ena_func) {
660 case ENA_ADMIN_TOEPLITZ:
661 func = ETH_RSS_HASH_TOP;
662 break;
663 case ENA_ADMIN_CRC32:
664 func = ETH_RSS_HASH_XOR;
665 break;
666 default:
667 netif_err(adapter, drv, netdev,
668 "Command parameter is not supported\n");
669 return -EOPNOTSUPP;
670 }
671
672 if (hfunc)
673 *hfunc = func;
674
675 return rc;
676 }
677
ena_set_rxfh(struct net_device * netdev,const u32 * indir,const u8 * key,const u8 hfunc)678 static int ena_set_rxfh(struct net_device *netdev, const u32 *indir,
679 const u8 *key, const u8 hfunc)
680 {
681 struct ena_adapter *adapter = netdev_priv(netdev);
682 struct ena_com_dev *ena_dev = adapter->ena_dev;
683 enum ena_admin_hash_functions func;
684 int rc, i;
685
686 if (indir) {
687 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
688 rc = ena_com_indirect_table_fill_entry(ena_dev,
689 i,
690 ENA_IO_RXQ_IDX(indir[i]));
691 if (unlikely(rc)) {
692 netif_err(adapter, drv, netdev,
693 "Cannot fill indirect table (index is too large)\n");
694 return rc;
695 }
696 }
697
698 rc = ena_com_indirect_table_set(ena_dev);
699 if (rc) {
700 netif_err(adapter, drv, netdev,
701 "Cannot set indirect table\n");
702 return rc == -EPERM ? -EOPNOTSUPP : rc;
703 }
704 }
705
706 switch (hfunc) {
707 case ETH_RSS_HASH_TOP:
708 func = ENA_ADMIN_TOEPLITZ;
709 break;
710 case ETH_RSS_HASH_XOR:
711 func = ENA_ADMIN_CRC32;
712 break;
713 default:
714 netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n",
715 hfunc);
716 return -EOPNOTSUPP;
717 }
718
719 if (key) {
720 rc = ena_com_fill_hash_function(ena_dev, func, key,
721 ENA_HASH_KEY_SIZE,
722 0xFFFFFFFF);
723 if (unlikely(rc)) {
724 netif_err(adapter, drv, netdev, "Cannot fill key\n");
725 return rc == -EPERM ? -EOPNOTSUPP : rc;
726 }
727 }
728
729 return 0;
730 }
731
ena_get_channels(struct net_device * netdev,struct ethtool_channels * channels)732 static void ena_get_channels(struct net_device *netdev,
733 struct ethtool_channels *channels)
734 {
735 struct ena_adapter *adapter = netdev_priv(netdev);
736
737 channels->max_rx = adapter->num_queues;
738 channels->max_tx = adapter->num_queues;
739 channels->max_other = 0;
740 channels->max_combined = 0;
741 channels->rx_count = adapter->num_queues;
742 channels->tx_count = adapter->num_queues;
743 channels->other_count = 0;
744 channels->combined_count = 0;
745 }
746
ena_get_tunable(struct net_device * netdev,const struct ethtool_tunable * tuna,void * data)747 static int ena_get_tunable(struct net_device *netdev,
748 const struct ethtool_tunable *tuna, void *data)
749 {
750 struct ena_adapter *adapter = netdev_priv(netdev);
751 int ret = 0;
752
753 switch (tuna->id) {
754 case ETHTOOL_RX_COPYBREAK:
755 *(u32 *)data = adapter->rx_copybreak;
756 break;
757 default:
758 ret = -EINVAL;
759 break;
760 }
761
762 return ret;
763 }
764
ena_set_tunable(struct net_device * netdev,const struct ethtool_tunable * tuna,const void * data)765 static int ena_set_tunable(struct net_device *netdev,
766 const struct ethtool_tunable *tuna,
767 const void *data)
768 {
769 struct ena_adapter *adapter = netdev_priv(netdev);
770 int ret = 0;
771 u32 len;
772
773 switch (tuna->id) {
774 case ETHTOOL_RX_COPYBREAK:
775 len = *(u32 *)data;
776 if (len > adapter->netdev->mtu) {
777 ret = -EINVAL;
778 break;
779 }
780 adapter->rx_copybreak = len;
781 break;
782 default:
783 ret = -EINVAL;
784 break;
785 }
786
787 return ret;
788 }
789
790 static const struct ethtool_ops ena_ethtool_ops = {
791 .get_link_ksettings = ena_get_link_ksettings,
792 .get_drvinfo = ena_get_drvinfo,
793 .get_msglevel = ena_get_msglevel,
794 .set_msglevel = ena_set_msglevel,
795 .get_link = ethtool_op_get_link,
796 .get_coalesce = ena_get_coalesce,
797 .set_coalesce = ena_set_coalesce,
798 .get_ringparam = ena_get_ringparam,
799 .set_ringparam = ena_set_ringparam,
800 .get_sset_count = ena_get_sset_count,
801 .get_strings = ena_get_strings,
802 .get_ethtool_stats = ena_get_ethtool_stats,
803 .get_rxnfc = ena_get_rxnfc,
804 .set_rxnfc = ena_set_rxnfc,
805 .get_rxfh_indir_size = ena_get_rxfh_indir_size,
806 .get_rxfh_key_size = ena_get_rxfh_key_size,
807 .get_rxfh = ena_get_rxfh,
808 .set_rxfh = ena_set_rxfh,
809 .get_channels = ena_get_channels,
810 .get_tunable = ena_get_tunable,
811 .set_tunable = ena_set_tunable,
812 };
813
ena_set_ethtool_ops(struct net_device * netdev)814 void ena_set_ethtool_ops(struct net_device *netdev)
815 {
816 netdev->ethtool_ops = &ena_ethtool_ops;
817 }
818
ena_dump_stats_ex(struct ena_adapter * adapter,u8 * buf)819 static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
820 {
821 struct net_device *netdev = adapter->netdev;
822 u8 *strings_buf;
823 u64 *data_buf;
824 int strings_num;
825 int i, rc;
826
827 strings_num = ena_get_sset_count(netdev, ETH_SS_STATS);
828 if (strings_num <= 0) {
829 netif_err(adapter, drv, netdev, "Can't get stats num\n");
830 return;
831 }
832
833 strings_buf = devm_kcalloc(&adapter->pdev->dev,
834 ETH_GSTRING_LEN, strings_num,
835 GFP_ATOMIC);
836 if (!strings_buf) {
837 netif_err(adapter, drv, netdev,
838 "failed to alloc strings_buf\n");
839 return;
840 }
841
842 data_buf = devm_kcalloc(&adapter->pdev->dev,
843 strings_num, sizeof(u64),
844 GFP_ATOMIC);
845 if (!data_buf) {
846 netif_err(adapter, drv, netdev,
847 "failed to allocate data buf\n");
848 devm_kfree(&adapter->pdev->dev, strings_buf);
849 return;
850 }
851
852 ena_get_strings(netdev, ETH_SS_STATS, strings_buf);
853 ena_get_ethtool_stats(netdev, NULL, data_buf);
854
855 /* If there is a buffer, dump stats, otherwise print them to dmesg */
856 if (buf)
857 for (i = 0; i < strings_num; i++) {
858 rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
859 "%s %llu\n",
860 strings_buf + i * ETH_GSTRING_LEN,
861 data_buf[i]);
862 buf += rc;
863 }
864 else
865 for (i = 0; i < strings_num; i++)
866 netif_err(adapter, drv, netdev, "%s: %llu\n",
867 strings_buf + i * ETH_GSTRING_LEN,
868 data_buf[i]);
869
870 devm_kfree(&adapter->pdev->dev, strings_buf);
871 devm_kfree(&adapter->pdev->dev, data_buf);
872 }
873
ena_dump_stats_to_buf(struct ena_adapter * adapter,u8 * buf)874 void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)
875 {
876 if (!buf)
877 return;
878
879 ena_dump_stats_ex(adapter, buf);
880 }
881
ena_dump_stats_to_dmesg(struct ena_adapter * adapter)882 void ena_dump_stats_to_dmesg(struct ena_adapter *adapter)
883 {
884 ena_dump_stats_ex(adapter, NULL);
885 }
886
