1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /*
3 * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
4 */
5
6 #include <linux/ethtool.h>
7 #include <linux/pci.h>
8
9 #include "ena_netdev.h"
10
11 struct ena_stats {
12 char name[ETH_GSTRING_LEN];
13 int stat_offset;
14 };
15
16 #define ENA_STAT_ENA_COM_ENTRY(stat) { \
17 .name = #stat, \
18 .stat_offset = offsetof(struct ena_com_stats_admin, stat) / sizeof(u64) \
19 }
20
21 #define ENA_STAT_ENTRY(stat, stat_type) { \
22 .name = #stat, \
23 .stat_offset = offsetof(struct ena_stats_##stat_type, stat) / sizeof(u64) \
24 }
25
26 #define ENA_STAT_HW_ENTRY(stat, stat_type) { \
27 .name = #stat, \
28 .stat_offset = offsetof(struct ena_admin_##stat_type, stat) / sizeof(u64) \
29 }
30
31 #define ENA_STAT_RX_ENTRY(stat) \
32 ENA_STAT_ENTRY(stat, rx)
33
34 #define ENA_STAT_TX_ENTRY(stat) \
35 ENA_STAT_ENTRY(stat, tx)
36
37 #define ENA_STAT_GLOBAL_ENTRY(stat) \
38 ENA_STAT_ENTRY(stat, dev)
39
40 #define ENA_STAT_ENI_ENTRY(stat) \
41 ENA_STAT_HW_ENTRY(stat, eni_stats)
42
43 static const struct ena_stats ena_stats_global_strings[] = {
44 ENA_STAT_GLOBAL_ENTRY(tx_timeout),
45 ENA_STAT_GLOBAL_ENTRY(suspend),
46 ENA_STAT_GLOBAL_ENTRY(resume),
47 ENA_STAT_GLOBAL_ENTRY(wd_expired),
48 ENA_STAT_GLOBAL_ENTRY(interface_up),
49 ENA_STAT_GLOBAL_ENTRY(interface_down),
50 ENA_STAT_GLOBAL_ENTRY(admin_q_pause),
51 };
52
53 static const struct ena_stats ena_stats_eni_strings[] = {
54 ENA_STAT_ENI_ENTRY(bw_in_allowance_exceeded),
55 ENA_STAT_ENI_ENTRY(bw_out_allowance_exceeded),
56 ENA_STAT_ENI_ENTRY(pps_allowance_exceeded),
57 ENA_STAT_ENI_ENTRY(conntrack_allowance_exceeded),
58 ENA_STAT_ENI_ENTRY(linklocal_allowance_exceeded),
59 };
60
61 static const struct ena_stats ena_stats_tx_strings[] = {
62 ENA_STAT_TX_ENTRY(cnt),
63 ENA_STAT_TX_ENTRY(bytes),
64 ENA_STAT_TX_ENTRY(queue_stop),
65 ENA_STAT_TX_ENTRY(queue_wakeup),
66 ENA_STAT_TX_ENTRY(dma_mapping_err),
67 ENA_STAT_TX_ENTRY(linearize),
68 ENA_STAT_TX_ENTRY(linearize_failed),
69 ENA_STAT_TX_ENTRY(napi_comp),
70 ENA_STAT_TX_ENTRY(tx_poll),
71 ENA_STAT_TX_ENTRY(doorbells),
72 ENA_STAT_TX_ENTRY(prepare_ctx_err),
73 ENA_STAT_TX_ENTRY(bad_req_id),
74 ENA_STAT_TX_ENTRY(llq_buffer_copy),
75 ENA_STAT_TX_ENTRY(missed_tx),
76 ENA_STAT_TX_ENTRY(unmask_interrupt),
77 };
78
79 static const struct ena_stats ena_stats_rx_strings[] = {
80 ENA_STAT_RX_ENTRY(cnt),
81 ENA_STAT_RX_ENTRY(bytes),
82 ENA_STAT_RX_ENTRY(rx_copybreak_pkt),
83 ENA_STAT_RX_ENTRY(csum_good),
84 ENA_STAT_RX_ENTRY(refil_partial),
85 ENA_STAT_RX_ENTRY(csum_bad),
86 ENA_STAT_RX_ENTRY(page_alloc_fail),
87 ENA_STAT_RX_ENTRY(skb_alloc_fail),
88 ENA_STAT_RX_ENTRY(dma_mapping_err),
89 ENA_STAT_RX_ENTRY(bad_desc_num),
90 ENA_STAT_RX_ENTRY(bad_req_id),
91 ENA_STAT_RX_ENTRY(empty_rx_ring),
92 ENA_STAT_RX_ENTRY(csum_unchecked),
93 ENA_STAT_RX_ENTRY(xdp_aborted),
94 ENA_STAT_RX_ENTRY(xdp_drop),
95 ENA_STAT_RX_ENTRY(xdp_pass),
96 ENA_STAT_RX_ENTRY(xdp_tx),
97 ENA_STAT_RX_ENTRY(xdp_invalid),
98 ENA_STAT_RX_ENTRY(xdp_redirect),
99 };
100
101 static const struct ena_stats ena_stats_ena_com_strings[] = {
102 ENA_STAT_ENA_COM_ENTRY(aborted_cmd),
103 ENA_STAT_ENA_COM_ENTRY(submitted_cmd),
104 ENA_STAT_ENA_COM_ENTRY(completed_cmd),
105 ENA_STAT_ENA_COM_ENTRY(out_of_space),
106 ENA_STAT_ENA_COM_ENTRY(no_completion),
107 };
108
109 #define ENA_STATS_ARRAY_GLOBAL ARRAY_SIZE(ena_stats_global_strings)
110 #define ENA_STATS_ARRAY_TX ARRAY_SIZE(ena_stats_tx_strings)
111 #define ENA_STATS_ARRAY_RX ARRAY_SIZE(ena_stats_rx_strings)
112 #define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings)
113 #define ENA_STATS_ARRAY_ENI(adapter) ARRAY_SIZE(ena_stats_eni_strings)
114
ena_safe_update_stat(u64 * src,u64 * dst,struct u64_stats_sync * syncp)115 static void ena_safe_update_stat(u64 *src, u64 *dst,
116 struct u64_stats_sync *syncp)
117 {
118 unsigned int start;
119
120 do {
121 start = u64_stats_fetch_begin_irq(syncp);
122 *(dst) = *src;
123 } while (u64_stats_fetch_retry_irq(syncp, start));
124 }
125
ena_queue_stats(struct ena_adapter * adapter,u64 ** data)126 static void ena_queue_stats(struct ena_adapter *adapter, u64 **data)
127 {
128 const struct ena_stats *ena_stats;
129 struct ena_ring *ring;
130
131 u64 *ptr;
132 int i, j;
133
134 for (i = 0; i < adapter->num_io_queues + adapter->xdp_num_queues; i++) {
135 /* Tx stats */
136 ring = &adapter->tx_ring[i];
137
138 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
139 ena_stats = &ena_stats_tx_strings[j];
140
141 ptr = (u64 *)&ring->tx_stats + ena_stats->stat_offset;
142
143 ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
144 }
145 /* XDP TX queues don't have a RX queue counterpart */
146 if (!ENA_IS_XDP_INDEX(adapter, i)) {
147 /* Rx stats */
148 ring = &adapter->rx_ring[i];
149
150 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
151 ena_stats = &ena_stats_rx_strings[j];
152
153 ptr = (u64 *)&ring->rx_stats +
154 ena_stats->stat_offset;
155
156 ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
157 }
158 }
159 }
160 }
161
ena_dev_admin_queue_stats(struct ena_adapter * adapter,u64 ** data)162 static void ena_dev_admin_queue_stats(struct ena_adapter *adapter, u64 **data)
163 {
164 const struct ena_stats *ena_stats;
165 u64 *ptr;
166 int i;
167
168 for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
169 ena_stats = &ena_stats_ena_com_strings[i];
170
171 ptr = (u64 *)&adapter->ena_dev->admin_queue.stats +
172 ena_stats->stat_offset;
173
174 *(*data)++ = *ptr;
175 }
176 }
177
ena_get_stats(struct ena_adapter * adapter,u64 * data,bool eni_stats_needed)178 static void ena_get_stats(struct ena_adapter *adapter,
179 u64 *data,
180 bool eni_stats_needed)
181 {
182 const struct ena_stats *ena_stats;
183 u64 *ptr;
184 int i;
185
186 for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
187 ena_stats = &ena_stats_global_strings[i];
188
189 ptr = (u64 *)&adapter->dev_stats + ena_stats->stat_offset;
190
191 ena_safe_update_stat(ptr, data++, &adapter->syncp);
192 }
193
194 if (eni_stats_needed) {
195 ena_update_hw_stats(adapter);
196 for (i = 0; i < ENA_STATS_ARRAY_ENI(adapter); i++) {
197 ena_stats = &ena_stats_eni_strings[i];
198
199 ptr = (u64 *)&adapter->eni_stats +
200 ena_stats->stat_offset;
201
202 ena_safe_update_stat(ptr, data++, &adapter->syncp);
203 }
204 }
205
206 ena_queue_stats(adapter, &data);
207 ena_dev_admin_queue_stats(adapter, &data);
208 }
209
ena_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)210 static void ena_get_ethtool_stats(struct net_device *netdev,
211 struct ethtool_stats *stats,
212 u64 *data)
213 {
214 struct ena_adapter *adapter = netdev_priv(netdev);
215 struct ena_com_dev *dev = adapter->ena_dev;
216
217 ena_get_stats(adapter, data, ena_com_get_cap(dev, ENA_ADMIN_ENI_STATS));
218 }
219
ena_get_sw_stats_count(struct ena_adapter * adapter)220 static int ena_get_sw_stats_count(struct ena_adapter *adapter)
221 {
222 return adapter->num_io_queues * (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX)
223 + adapter->xdp_num_queues * ENA_STATS_ARRAY_TX
224 + ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
225 }
226
ena_get_hw_stats_count(struct ena_adapter * adapter)227 static int ena_get_hw_stats_count(struct ena_adapter *adapter)
228 {
229 bool supported = ena_com_get_cap(adapter->ena_dev, ENA_ADMIN_ENI_STATS);
230
231 return ENA_STATS_ARRAY_ENI(adapter) * supported;
232 }
233
ena_get_sset_count(struct net_device * netdev,int sset)234 int ena_get_sset_count(struct net_device *netdev, int sset)
235 {
236 struct ena_adapter *adapter = netdev_priv(netdev);
237
238 switch (sset) {
239 case ETH_SS_STATS:
240 return ena_get_sw_stats_count(adapter) +
241 ena_get_hw_stats_count(adapter);
242 }
243
244 return -EOPNOTSUPP;
245 }
246
ena_queue_strings(struct ena_adapter * adapter,u8 ** data)247 static void ena_queue_strings(struct ena_adapter *adapter, u8 **data)
248 {
249 const struct ena_stats *ena_stats;
250 bool is_xdp;
251 int i, j;
252
253 for (i = 0; i < adapter->num_io_queues + adapter->xdp_num_queues; i++) {
254 is_xdp = ENA_IS_XDP_INDEX(adapter, i);
255 /* Tx stats */
256 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
257 ena_stats = &ena_stats_tx_strings[j];
258
259 ethtool_sprintf(data,
260 "queue_%u_%s_%s", i,
261 is_xdp ? "xdp_tx" : "tx",
262 ena_stats->name);
263 }
264
265 if (!is_xdp) {
266 /* RX stats, in XDP there isn't a RX queue
267 * counterpart
268 */
269 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
270 ena_stats = &ena_stats_rx_strings[j];
271
272 ethtool_sprintf(data,
273 "queue_%u_rx_%s", i,
274 ena_stats->name);
275 }
276 }
277 }
278 }
279
ena_com_dev_strings(u8 ** data)280 static void ena_com_dev_strings(u8 **data)
281 {
282 const struct ena_stats *ena_stats;
283 int i;
284
285 for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
286 ena_stats = &ena_stats_ena_com_strings[i];
287
288 ethtool_sprintf(data,
289 "ena_admin_q_%s", ena_stats->name);
290 }
291 }
292
ena_get_strings(struct ena_adapter * adapter,u8 * data,bool eni_stats_needed)293 static void ena_get_strings(struct ena_adapter *adapter,
294 u8 *data,
295 bool eni_stats_needed)
296 {
297 const struct ena_stats *ena_stats;
298 int i;
299
300 for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
301 ena_stats = &ena_stats_global_strings[i];
302 ethtool_sprintf(&data, ena_stats->name);
303 }
304
305 if (eni_stats_needed) {
306 for (i = 0; i < ENA_STATS_ARRAY_ENI(adapter); i++) {
307 ena_stats = &ena_stats_eni_strings[i];
308 ethtool_sprintf(&data, ena_stats->name);
309 }
310 }
311
312 ena_queue_strings(adapter, &data);
313 ena_com_dev_strings(&data);
314 }
315
ena_get_ethtool_strings(struct net_device * netdev,u32 sset,u8 * data)316 static void ena_get_ethtool_strings(struct net_device *netdev,
317 u32 sset,
318 u8 *data)
319 {
320 struct ena_adapter *adapter = netdev_priv(netdev);
321 struct ena_com_dev *dev = adapter->ena_dev;
322
323 switch (sset) {
324 case ETH_SS_STATS:
325 ena_get_strings(adapter, data, ena_com_get_cap(dev, ENA_ADMIN_ENI_STATS));
326 break;
327 }
328 }
329
ena_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * link_ksettings)330 static int ena_get_link_ksettings(struct net_device *netdev,
331 struct ethtool_link_ksettings *link_ksettings)
332 {
333 struct ena_adapter *adapter = netdev_priv(netdev);
334 struct ena_com_dev *ena_dev = adapter->ena_dev;
335 struct ena_admin_get_feature_link_desc *link;
336 struct ena_admin_get_feat_resp feat_resp;
337 int rc;
338
339 rc = ena_com_get_link_params(ena_dev, &feat_resp);
340 if (rc)
341 return rc;
342
343 link = &feat_resp.u.link;
344 link_ksettings->base.speed = link->speed;
345
346 if (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) {
347 ethtool_link_ksettings_add_link_mode(link_ksettings,
348 supported, Autoneg);
349 ethtool_link_ksettings_add_link_mode(link_ksettings,
350 supported, Autoneg);
351 }
352
353 link_ksettings->base.autoneg =
354 (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) ?
355 AUTONEG_ENABLE : AUTONEG_DISABLE;
356
357 link_ksettings->base.duplex = DUPLEX_FULL;
358
359 return 0;
360 }
361
ena_get_coalesce(struct net_device * net_dev,struct ethtool_coalesce * coalesce,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)362 static int ena_get_coalesce(struct net_device *net_dev,
363 struct ethtool_coalesce *coalesce,
364 struct kernel_ethtool_coalesce *kernel_coal,
365 struct netlink_ext_ack *extack)
366 {
367 struct ena_adapter *adapter = netdev_priv(net_dev);
368 struct ena_com_dev *ena_dev = adapter->ena_dev;
369
370 if (!ena_com_interrupt_moderation_supported(ena_dev))
371 return -EOPNOTSUPP;
372
373 coalesce->tx_coalesce_usecs =
374 ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) *
375 ena_dev->intr_delay_resolution;
376
377 coalesce->rx_coalesce_usecs =
378 ena_com_get_nonadaptive_moderation_interval_rx(ena_dev)
379 * ena_dev->intr_delay_resolution;
380
381 coalesce->use_adaptive_rx_coalesce =
382 ena_com_get_adaptive_moderation_enabled(ena_dev);
383
384 return 0;
385 }
386
ena_update_tx_rings_nonadaptive_intr_moderation(struct ena_adapter * adapter)387 static void ena_update_tx_rings_nonadaptive_intr_moderation(struct ena_adapter *adapter)
388 {
389 unsigned int val;
390 int i;
391
392 val = ena_com_get_nonadaptive_moderation_interval_tx(adapter->ena_dev);
393
394 for (i = 0; i < adapter->num_io_queues; i++)
395 adapter->tx_ring[i].smoothed_interval = val;
396 }
397
ena_update_rx_rings_nonadaptive_intr_moderation(struct ena_adapter * adapter)398 static void ena_update_rx_rings_nonadaptive_intr_moderation(struct ena_adapter *adapter)
399 {
400 unsigned int val;
401 int i;
402
403 val = ena_com_get_nonadaptive_moderation_interval_rx(adapter->ena_dev);
404
405 for (i = 0; i < adapter->num_io_queues; i++)
406 adapter->rx_ring[i].smoothed_interval = val;
407 }
408
ena_set_coalesce(struct net_device * net_dev,struct ethtool_coalesce * coalesce,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)409 static int ena_set_coalesce(struct net_device *net_dev,
410 struct ethtool_coalesce *coalesce,
411 struct kernel_ethtool_coalesce *kernel_coal,
412 struct netlink_ext_ack *extack)
413 {
414 struct ena_adapter *adapter = netdev_priv(net_dev);
415 struct ena_com_dev *ena_dev = adapter->ena_dev;
416 int rc;
417
418 if (!ena_com_interrupt_moderation_supported(ena_dev))
419 return -EOPNOTSUPP;
420
421 rc = ena_com_update_nonadaptive_moderation_interval_tx(ena_dev,
422 coalesce->tx_coalesce_usecs);
423 if (rc)
424 return rc;
425
426 ena_update_tx_rings_nonadaptive_intr_moderation(adapter);
427
428 rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
429 coalesce->rx_coalesce_usecs);
430 if (rc)
431 return rc;
432
433 ena_update_rx_rings_nonadaptive_intr_moderation(adapter);
434
435 if (coalesce->use_adaptive_rx_coalesce &&
436 !ena_com_get_adaptive_moderation_enabled(ena_dev))
437 ena_com_enable_adaptive_moderation(ena_dev);
438
439 if (!coalesce->use_adaptive_rx_coalesce &&
440 ena_com_get_adaptive_moderation_enabled(ena_dev))
441 ena_com_disable_adaptive_moderation(ena_dev);
442
443 return 0;
444 }
445
ena_get_msglevel(struct net_device * netdev)446 static u32 ena_get_msglevel(struct net_device *netdev)
447 {
448 struct ena_adapter *adapter = netdev_priv(netdev);
449
450 return adapter->msg_enable;
451 }
452
ena_set_msglevel(struct net_device * netdev,u32 value)453 static void ena_set_msglevel(struct net_device *netdev, u32 value)
454 {
455 struct ena_adapter *adapter = netdev_priv(netdev);
456
457 adapter->msg_enable = value;
458 }
459
ena_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)460 static void ena_get_drvinfo(struct net_device *dev,
461 struct ethtool_drvinfo *info)
462 {
463 struct ena_adapter *adapter = netdev_priv(dev);
464
465 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
466 strlcpy(info->bus_info, pci_name(adapter->pdev),
467 sizeof(info->bus_info));
468 }
469
ena_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)470 static void ena_get_ringparam(struct net_device *netdev,
471 struct ethtool_ringparam *ring,
472 struct kernel_ethtool_ringparam *kernel_ring,
473 struct netlink_ext_ack *extack)
474 {
475 struct ena_adapter *adapter = netdev_priv(netdev);
476
477 ring->tx_max_pending = adapter->max_tx_ring_size;
478 ring->rx_max_pending = adapter->max_rx_ring_size;
479 ring->tx_pending = adapter->tx_ring[0].ring_size;
480 ring->rx_pending = adapter->rx_ring[0].ring_size;
481 }
482
ena_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)483 static int ena_set_ringparam(struct net_device *netdev,
484 struct ethtool_ringparam *ring,
485 struct kernel_ethtool_ringparam *kernel_ring,
486 struct netlink_ext_ack *extack)
487 {
488 struct ena_adapter *adapter = netdev_priv(netdev);
489 u32 new_tx_size, new_rx_size;
490
491 new_tx_size = ring->tx_pending < ENA_MIN_RING_SIZE ?
492 ENA_MIN_RING_SIZE : ring->tx_pending;
493 new_tx_size = rounddown_pow_of_two(new_tx_size);
494
495 new_rx_size = ring->rx_pending < ENA_MIN_RING_SIZE ?
496 ENA_MIN_RING_SIZE : ring->rx_pending;
497 new_rx_size = rounddown_pow_of_two(new_rx_size);
498
499 if (new_tx_size == adapter->requested_tx_ring_size &&
500 new_rx_size == adapter->requested_rx_ring_size)
501 return 0;
502
503 return ena_update_queue_sizes(adapter, new_tx_size, new_rx_size);
504 }
505
ena_flow_hash_to_flow_type(u16 hash_fields)506 static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
507 {
508 u32 data = 0;
509
510 if (hash_fields & ENA_ADMIN_RSS_L2_DA)
511 data |= RXH_L2DA;
512
513 if (hash_fields & ENA_ADMIN_RSS_L3_DA)
514 data |= RXH_IP_DST;
515
516 if (hash_fields & ENA_ADMIN_RSS_L3_SA)
517 data |= RXH_IP_SRC;
518
519 if (hash_fields & ENA_ADMIN_RSS_L4_DP)
520 data |= RXH_L4_B_2_3;
521
522 if (hash_fields & ENA_ADMIN_RSS_L4_SP)
523 data |= RXH_L4_B_0_1;
524
525 return data;
526 }
527
ena_flow_data_to_flow_hash(u32 hash_fields)528 static u16 ena_flow_data_to_flow_hash(u32 hash_fields)
529 {
530 u16 data = 0;
531
532 if (hash_fields & RXH_L2DA)
533 data |= ENA_ADMIN_RSS_L2_DA;
534
535 if (hash_fields & RXH_IP_DST)
536 data |= ENA_ADMIN_RSS_L3_DA;
537
538 if (hash_fields & RXH_IP_SRC)
539 data |= ENA_ADMIN_RSS_L3_SA;
540
541 if (hash_fields & RXH_L4_B_2_3)
542 data |= ENA_ADMIN_RSS_L4_DP;
543
544 if (hash_fields & RXH_L4_B_0_1)
545 data |= ENA_ADMIN_RSS_L4_SP;
546
547 return data;
548 }
549
ena_get_rss_hash(struct ena_com_dev * ena_dev,struct ethtool_rxnfc * cmd)550 static int ena_get_rss_hash(struct ena_com_dev *ena_dev,
551 struct ethtool_rxnfc *cmd)
552 {
553 enum ena_admin_flow_hash_proto proto;
554 u16 hash_fields;
555 int rc;
556
557 cmd->data = 0;
558
559 switch (cmd->flow_type) {
560 case TCP_V4_FLOW:
561 proto = ENA_ADMIN_RSS_TCP4;
562 break;
563 case UDP_V4_FLOW:
564 proto = ENA_ADMIN_RSS_UDP4;
565 break;
566 case TCP_V6_FLOW:
567 proto = ENA_ADMIN_RSS_TCP6;
568 break;
569 case UDP_V6_FLOW:
570 proto = ENA_ADMIN_RSS_UDP6;
571 break;
572 case IPV4_FLOW:
573 proto = ENA_ADMIN_RSS_IP4;
574 break;
575 case IPV6_FLOW:
576 proto = ENA_ADMIN_RSS_IP6;
577 break;
578 case ETHER_FLOW:
579 proto = ENA_ADMIN_RSS_NOT_IP;
580 break;
581 case AH_V4_FLOW:
582 case ESP_V4_FLOW:
583 case AH_V6_FLOW:
584 case ESP_V6_FLOW:
585 case SCTP_V4_FLOW:
586 case AH_ESP_V4_FLOW:
587 return -EOPNOTSUPP;
588 default:
589 return -EINVAL;
590 }
591
592 rc = ena_com_get_hash_ctrl(ena_dev, proto, &hash_fields);
593 if (rc)
594 return rc;
595
596 cmd->data = ena_flow_hash_to_flow_type(hash_fields);
597
598 return 0;
599 }
600
ena_set_rss_hash(struct ena_com_dev * ena_dev,struct ethtool_rxnfc * cmd)601 static int ena_set_rss_hash(struct ena_com_dev *ena_dev,
602 struct ethtool_rxnfc *cmd)
603 {
604 enum ena_admin_flow_hash_proto proto;
605 u16 hash_fields;
606
607 switch (cmd->flow_type) {
608 case TCP_V4_FLOW:
609 proto = ENA_ADMIN_RSS_TCP4;
610 break;
611 case UDP_V4_FLOW:
612 proto = ENA_ADMIN_RSS_UDP4;
613 break;
614 case TCP_V6_FLOW:
615 proto = ENA_ADMIN_RSS_TCP6;
616 break;
617 case UDP_V6_FLOW:
618 proto = ENA_ADMIN_RSS_UDP6;
619 break;
620 case IPV4_FLOW:
621 proto = ENA_ADMIN_RSS_IP4;
622 break;
623 case IPV6_FLOW:
624 proto = ENA_ADMIN_RSS_IP6;
625 break;
626 case ETHER_FLOW:
627 proto = ENA_ADMIN_RSS_NOT_IP;
628 break;
629 case AH_V4_FLOW:
630 case ESP_V4_FLOW:
631 case AH_V6_FLOW:
632 case ESP_V6_FLOW:
633 case SCTP_V4_FLOW:
634 case AH_ESP_V4_FLOW:
635 return -EOPNOTSUPP;
636 default:
637 return -EINVAL;
638 }
639
640 hash_fields = ena_flow_data_to_flow_hash(cmd->data);
641
642 return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields);
643 }
644
ena_set_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info)645 static int ena_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
646 {
647 struct ena_adapter *adapter = netdev_priv(netdev);
648 int rc = 0;
649
650 switch (info->cmd) {
651 case ETHTOOL_SRXFH:
652 rc = ena_set_rss_hash(adapter->ena_dev, info);
653 break;
654 case ETHTOOL_SRXCLSRLDEL:
655 case ETHTOOL_SRXCLSRLINS:
656 default:
657 netif_err(adapter, drv, netdev,
658 "Command parameter %d is not supported\n", info->cmd);
659 rc = -EOPNOTSUPP;
660 }
661
662 return rc;
663 }
664
ena_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info,u32 * rules)665 static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
666 u32 *rules)
667 {
668 struct ena_adapter *adapter = netdev_priv(netdev);
669 int rc = 0;
670
671 switch (info->cmd) {
672 case ETHTOOL_GRXRINGS:
673 info->data = adapter->num_io_queues;
674 rc = 0;
675 break;
676 case ETHTOOL_GRXFH:
677 rc = ena_get_rss_hash(adapter->ena_dev, info);
678 break;
679 case ETHTOOL_GRXCLSRLCNT:
680 case ETHTOOL_GRXCLSRULE:
681 case ETHTOOL_GRXCLSRLALL:
682 default:
683 netif_err(adapter, drv, netdev,
684 "Command parameter %d is not supported\n", info->cmd);
685 rc = -EOPNOTSUPP;
686 }
687
688 return rc;
689 }
690
ena_get_rxfh_indir_size(struct net_device * netdev)691 static u32 ena_get_rxfh_indir_size(struct net_device *netdev)
692 {
693 return ENA_RX_RSS_TABLE_SIZE;
694 }
695
ena_get_rxfh_key_size(struct net_device * netdev)696 static u32 ena_get_rxfh_key_size(struct net_device *netdev)
697 {
698 return ENA_HASH_KEY_SIZE;
699 }
700
ena_indirection_table_set(struct ena_adapter * adapter,const u32 * indir)701 static int ena_indirection_table_set(struct ena_adapter *adapter,
702 const u32 *indir)
703 {
704 struct ena_com_dev *ena_dev = adapter->ena_dev;
705 int i, rc;
706
707 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
708 rc = ena_com_indirect_table_fill_entry(ena_dev,
709 i,
710 ENA_IO_RXQ_IDX(indir[i]));
711 if (unlikely(rc)) {
712 netif_err(adapter, drv, adapter->netdev,
713 "Cannot fill indirect table (index is too large)\n");
714 return rc;
715 }
716 }
717
718 rc = ena_com_indirect_table_set(ena_dev);
719 if (rc) {
720 netif_err(adapter, drv, adapter->netdev,
721 "Cannot set indirect table\n");
722 return rc == -EPERM ? -EOPNOTSUPP : rc;
723 }
724 return rc;
725 }
726
ena_indirection_table_get(struct ena_adapter * adapter,u32 * indir)727 static int ena_indirection_table_get(struct ena_adapter *adapter, u32 *indir)
728 {
729 struct ena_com_dev *ena_dev = adapter->ena_dev;
730 int i, rc;
731
732 if (!indir)
733 return 0;
734
735 rc = ena_com_indirect_table_get(ena_dev, indir);
736 if (rc)
737 return rc;
738
739 /* Our internal representation of the indices is: even indices
740 * for Tx and uneven indices for Rx. We need to convert the Rx
741 * indices to be consecutive
742 */
743 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++)
744 indir[i] = ENA_IO_RXQ_IDX_TO_COMBINED_IDX(indir[i]);
745
746 return rc;
747 }
748
ena_get_rxfh(struct net_device * netdev,u32 * indir,u8 * key,u8 * hfunc)749 static int ena_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
750 u8 *hfunc)
751 {
752 struct ena_adapter *adapter = netdev_priv(netdev);
753 enum ena_admin_hash_functions ena_func;
754 u8 func;
755 int rc;
756
757 rc = ena_indirection_table_get(adapter, indir);
758 if (rc)
759 return rc;
760
761 /* We call this function in order to check if the device
762 * supports getting/setting the hash function.
763 */
764 rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func);
765 if (rc) {
766 if (rc == -EOPNOTSUPP)
767 rc = 0;
768
769 return rc;
770 }
771
772 rc = ena_com_get_hash_key(adapter->ena_dev, key);
773 if (rc)
774 return rc;
775
776 switch (ena_func) {
777 case ENA_ADMIN_TOEPLITZ:
778 func = ETH_RSS_HASH_TOP;
779 break;
780 case ENA_ADMIN_CRC32:
781 func = ETH_RSS_HASH_CRC32;
782 break;
783 default:
784 netif_err(adapter, drv, netdev,
785 "Command parameter is not supported\n");
786 return -EOPNOTSUPP;
787 }
788
789 if (hfunc)
790 *hfunc = func;
791
792 return 0;
793 }
794
ena_set_rxfh(struct net_device * netdev,const u32 * indir,const u8 * key,const u8 hfunc)795 static int ena_set_rxfh(struct net_device *netdev, const u32 *indir,
796 const u8 *key, const u8 hfunc)
797 {
798 struct ena_adapter *adapter = netdev_priv(netdev);
799 struct ena_com_dev *ena_dev = adapter->ena_dev;
800 enum ena_admin_hash_functions func = 0;
801 int rc;
802
803 if (indir) {
804 rc = ena_indirection_table_set(adapter, indir);
805 if (rc)
806 return rc;
807 }
808
809 switch (hfunc) {
810 case ETH_RSS_HASH_NO_CHANGE:
811 func = ena_com_get_current_hash_function(ena_dev);
812 break;
813 case ETH_RSS_HASH_TOP:
814 func = ENA_ADMIN_TOEPLITZ;
815 break;
816 case ETH_RSS_HASH_CRC32:
817 func = ENA_ADMIN_CRC32;
818 break;
819 default:
820 netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n",
821 hfunc);
822 return -EOPNOTSUPP;
823 }
824
825 if (key || func) {
826 rc = ena_com_fill_hash_function(ena_dev, func, key,
827 ENA_HASH_KEY_SIZE,
828 0xFFFFFFFF);
829 if (unlikely(rc)) {
830 netif_err(adapter, drv, netdev, "Cannot fill key\n");
831 return rc == -EPERM ? -EOPNOTSUPP : rc;
832 }
833 }
834
835 return 0;
836 }
837
ena_get_channels(struct net_device * netdev,struct ethtool_channels * channels)838 static void ena_get_channels(struct net_device *netdev,
839 struct ethtool_channels *channels)
840 {
841 struct ena_adapter *adapter = netdev_priv(netdev);
842
843 channels->max_combined = adapter->max_num_io_queues;
844 channels->combined_count = adapter->num_io_queues;
845 }
846
ena_set_channels(struct net_device * netdev,struct ethtool_channels * channels)847 static int ena_set_channels(struct net_device *netdev,
848 struct ethtool_channels *channels)
849 {
850 struct ena_adapter *adapter = netdev_priv(netdev);
851 u32 count = channels->combined_count;
852 /* The check for max value is already done in ethtool */
853 if (count < ENA_MIN_NUM_IO_QUEUES ||
854 (ena_xdp_present(adapter) &&
855 !ena_xdp_legal_queue_count(adapter, count)))
856 return -EINVAL;
857
858 return ena_update_queue_count(adapter, count);
859 }
860
ena_get_tunable(struct net_device * netdev,const struct ethtool_tunable * tuna,void * data)861 static int ena_get_tunable(struct net_device *netdev,
862 const struct ethtool_tunable *tuna, void *data)
863 {
864 struct ena_adapter *adapter = netdev_priv(netdev);
865 int ret = 0;
866
867 switch (tuna->id) {
868 case ETHTOOL_RX_COPYBREAK:
869 *(u32 *)data = adapter->rx_copybreak;
870 break;
871 default:
872 ret = -EINVAL;
873 break;
874 }
875
876 return ret;
877 }
878
ena_set_tunable(struct net_device * netdev,const struct ethtool_tunable * tuna,const void * data)879 static int ena_set_tunable(struct net_device *netdev,
880 const struct ethtool_tunable *tuna,
881 const void *data)
882 {
883 struct ena_adapter *adapter = netdev_priv(netdev);
884 int ret = 0;
885 u32 len;
886
887 switch (tuna->id) {
888 case ETHTOOL_RX_COPYBREAK:
889 len = *(u32 *)data;
890 if (len > adapter->netdev->mtu) {
891 ret = -EINVAL;
892 break;
893 }
894 adapter->rx_copybreak = len;
895 break;
896 default:
897 ret = -EINVAL;
898 break;
899 }
900
901 return ret;
902 }
903
904 static const struct ethtool_ops ena_ethtool_ops = {
905 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
906 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
907 .get_link_ksettings = ena_get_link_ksettings,
908 .get_drvinfo = ena_get_drvinfo,
909 .get_msglevel = ena_get_msglevel,
910 .set_msglevel = ena_set_msglevel,
911 .get_link = ethtool_op_get_link,
912 .get_coalesce = ena_get_coalesce,
913 .set_coalesce = ena_set_coalesce,
914 .get_ringparam = ena_get_ringparam,
915 .set_ringparam = ena_set_ringparam,
916 .get_sset_count = ena_get_sset_count,
917 .get_strings = ena_get_ethtool_strings,
918 .get_ethtool_stats = ena_get_ethtool_stats,
919 .get_rxnfc = ena_get_rxnfc,
920 .set_rxnfc = ena_set_rxnfc,
921 .get_rxfh_indir_size = ena_get_rxfh_indir_size,
922 .get_rxfh_key_size = ena_get_rxfh_key_size,
923 .get_rxfh = ena_get_rxfh,
924 .set_rxfh = ena_set_rxfh,
925 .get_channels = ena_get_channels,
926 .set_channels = ena_set_channels,
927 .get_tunable = ena_get_tunable,
928 .set_tunable = ena_set_tunable,
929 .get_ts_info = ethtool_op_get_ts_info,
930 };
931
ena_set_ethtool_ops(struct net_device * netdev)932 void ena_set_ethtool_ops(struct net_device *netdev)
933 {
934 netdev->ethtool_ops = &ena_ethtool_ops;
935 }
936
ena_dump_stats_ex(struct ena_adapter * adapter,u8 * buf)937 static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
938 {
939 struct net_device *netdev = adapter->netdev;
940 u8 *strings_buf;
941 u64 *data_buf;
942 int strings_num;
943 int i, rc;
944
945 strings_num = ena_get_sw_stats_count(adapter);
946 if (strings_num <= 0) {
947 netif_err(adapter, drv, netdev, "Can't get stats num\n");
948 return;
949 }
950
951 strings_buf = devm_kcalloc(&adapter->pdev->dev,
952 ETH_GSTRING_LEN, strings_num,
953 GFP_ATOMIC);
954 if (!strings_buf) {
955 netif_err(adapter, drv, netdev,
956 "Failed to allocate strings_buf\n");
957 return;
958 }
959
960 data_buf = devm_kcalloc(&adapter->pdev->dev,
961 strings_num, sizeof(u64),
962 GFP_ATOMIC);
963 if (!data_buf) {
964 netif_err(adapter, drv, netdev,
965 "Failed to allocate data buf\n");
966 devm_kfree(&adapter->pdev->dev, strings_buf);
967 return;
968 }
969
970 ena_get_strings(adapter, strings_buf, false);
971 ena_get_stats(adapter, data_buf, false);
972
973 /* If there is a buffer, dump stats, otherwise print them to dmesg */
974 if (buf)
975 for (i = 0; i < strings_num; i++) {
976 rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
977 "%s %llu\n",
978 strings_buf + i * ETH_GSTRING_LEN,
979 data_buf[i]);
980 buf += rc;
981 }
982 else
983 for (i = 0; i < strings_num; i++)
984 netif_err(adapter, drv, netdev, "%s: %llu\n",
985 strings_buf + i * ETH_GSTRING_LEN,
986 data_buf[i]);
987
988 devm_kfree(&adapter->pdev->dev, strings_buf);
989 devm_kfree(&adapter->pdev->dev, data_buf);
990 }
991
ena_dump_stats_to_buf(struct ena_adapter * adapter,u8 * buf)992 void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)
993 {
994 if (!buf)
995 return;
996
997 ena_dump_stats_ex(adapter, buf);
998 }
999
ena_dump_stats_to_dmesg(struct ena_adapter * adapter)1000 void ena_dump_stats_to_dmesg(struct ena_adapter *adapter)
1001 {
1002 ena_dump_stats_ex(adapter, NULL);
1003 }
1004