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#include <linux/net_tstamp.h>
9
10#include "ena_netdev.h"
11#include "ena_xdp.h"
12#include "ena_phc.h"
13
14struct ena_stats {
15 char name[ETH_GSTRING_LEN];
16 int stat_offset;
17};
18
19struct ena_hw_metrics {
20 char name[ETH_GSTRING_LEN];
21};
22
23#define ENA_STAT_ENA_COM_ENTRY(stat) { \
24 .name = #stat, \
25 .stat_offset = offsetof(struct ena_com_stats_admin, stat) / sizeof(u64) \
26}
27
28#define ENA_STAT_ENTRY(stat, stat_type) { \
29 .name = #stat, \
30 .stat_offset = offsetof(struct ena_stats_##stat_type, stat) / sizeof(u64) \
31}
32
33#define ENA_STAT_HW_ENTRY(stat, stat_type) { \
34 .name = #stat, \
35 .stat_offset = offsetof(struct ena_admin_##stat_type, stat) / sizeof(u64) \
36}
37
38#define ENA_STAT_RX_ENTRY(stat) \
39 ENA_STAT_ENTRY(stat, rx)
40
41#define ENA_STAT_TX_ENTRY(stat) \
42 ENA_STAT_ENTRY(stat, tx)
43
44#define ENA_STAT_GLOBAL_ENTRY(stat) \
45 ENA_STAT_ENTRY(stat, dev)
46
47#define ENA_STAT_ENI_ENTRY(stat) \
48 ENA_STAT_HW_ENTRY(stat, eni_stats)
49
50#define ENA_STAT_ENA_SRD_ENTRY(stat) \
51 ENA_STAT_HW_ENTRY(stat, ena_srd_stats)
52
53#define ENA_STAT_ENA_SRD_MODE_ENTRY(stat) { \
54 .name = #stat, \
55 .stat_offset = offsetof(struct ena_admin_ena_srd_info, flags) / sizeof(u64) \
56}
57
58#define ENA_METRIC_ENI_ENTRY(stat) { \
59 .name = #stat \
60}
61
62static const struct ena_stats ena_stats_global_strings[] = {
63 ENA_STAT_GLOBAL_ENTRY(tx_timeout),
64 ENA_STAT_GLOBAL_ENTRY(suspend),
65 ENA_STAT_GLOBAL_ENTRY(resume),
66 ENA_STAT_GLOBAL_ENTRY(wd_expired),
67 ENA_STAT_GLOBAL_ENTRY(interface_up),
68 ENA_STAT_GLOBAL_ENTRY(interface_down),
69 ENA_STAT_GLOBAL_ENTRY(admin_q_pause),
70 ENA_STAT_GLOBAL_ENTRY(reset_fail),
71};
72
73/* A partial list of hw stats. Used when admin command
74 * with type ENA_ADMIN_GET_STATS_TYPE_CUSTOMER_METRICS is not supported
75 */
76static const struct ena_stats ena_stats_eni_strings[] = {
77 ENA_STAT_ENI_ENTRY(bw_in_allowance_exceeded),
78 ENA_STAT_ENI_ENTRY(bw_out_allowance_exceeded),
79 ENA_STAT_ENI_ENTRY(pps_allowance_exceeded),
80 ENA_STAT_ENI_ENTRY(conntrack_allowance_exceeded),
81 ENA_STAT_ENI_ENTRY(linklocal_allowance_exceeded),
82};
83
84static const struct ena_hw_metrics ena_hw_stats_strings[] = {
85 ENA_METRIC_ENI_ENTRY(bw_in_allowance_exceeded),
86 ENA_METRIC_ENI_ENTRY(bw_out_allowance_exceeded),
87 ENA_METRIC_ENI_ENTRY(pps_allowance_exceeded),
88 ENA_METRIC_ENI_ENTRY(conntrack_allowance_exceeded),
89 ENA_METRIC_ENI_ENTRY(linklocal_allowance_exceeded),
90 ENA_METRIC_ENI_ENTRY(conntrack_allowance_available),
91};
92
93static const struct ena_stats ena_srd_info_strings[] = {
94 ENA_STAT_ENA_SRD_MODE_ENTRY(ena_srd_mode),
95 ENA_STAT_ENA_SRD_ENTRY(ena_srd_tx_pkts),
96 ENA_STAT_ENA_SRD_ENTRY(ena_srd_eligible_tx_pkts),
97 ENA_STAT_ENA_SRD_ENTRY(ena_srd_rx_pkts),
98 ENA_STAT_ENA_SRD_ENTRY(ena_srd_resource_utilization)
99};
100
101static const struct ena_stats ena_stats_tx_strings[] = {
102 ENA_STAT_TX_ENTRY(cnt),
103 ENA_STAT_TX_ENTRY(bytes),
104 ENA_STAT_TX_ENTRY(queue_stop),
105 ENA_STAT_TX_ENTRY(queue_wakeup),
106 ENA_STAT_TX_ENTRY(dma_mapping_err),
107 ENA_STAT_TX_ENTRY(linearize),
108 ENA_STAT_TX_ENTRY(linearize_failed),
109 ENA_STAT_TX_ENTRY(napi_comp),
110 ENA_STAT_TX_ENTRY(tx_poll),
111 ENA_STAT_TX_ENTRY(doorbells),
112 ENA_STAT_TX_ENTRY(prepare_ctx_err),
113 ENA_STAT_TX_ENTRY(bad_req_id),
114 ENA_STAT_TX_ENTRY(llq_buffer_copy),
115 ENA_STAT_TX_ENTRY(missed_tx),
116 ENA_STAT_TX_ENTRY(unmask_interrupt),
117};
118
119static const struct ena_stats ena_stats_rx_strings[] = {
120 ENA_STAT_RX_ENTRY(cnt),
121 ENA_STAT_RX_ENTRY(bytes),
122 ENA_STAT_RX_ENTRY(rx_copybreak_pkt),
123 ENA_STAT_RX_ENTRY(csum_good),
124 ENA_STAT_RX_ENTRY(refil_partial),
125 ENA_STAT_RX_ENTRY(csum_bad),
126 ENA_STAT_RX_ENTRY(page_alloc_fail),
127 ENA_STAT_RX_ENTRY(skb_alloc_fail),
128 ENA_STAT_RX_ENTRY(dma_mapping_err),
129 ENA_STAT_RX_ENTRY(bad_desc_num),
130 ENA_STAT_RX_ENTRY(bad_req_id),
131 ENA_STAT_RX_ENTRY(empty_rx_ring),
132 ENA_STAT_RX_ENTRY(csum_unchecked),
133 ENA_STAT_RX_ENTRY(xdp_aborted),
134 ENA_STAT_RX_ENTRY(xdp_drop),
135 ENA_STAT_RX_ENTRY(xdp_pass),
136 ENA_STAT_RX_ENTRY(xdp_tx),
137 ENA_STAT_RX_ENTRY(xdp_invalid),
138 ENA_STAT_RX_ENTRY(xdp_redirect),
139};
140
141static const struct ena_stats ena_stats_ena_com_strings[] = {
142 ENA_STAT_ENA_COM_ENTRY(aborted_cmd),
143 ENA_STAT_ENA_COM_ENTRY(submitted_cmd),
144 ENA_STAT_ENA_COM_ENTRY(completed_cmd),
145 ENA_STAT_ENA_COM_ENTRY(out_of_space),
146 ENA_STAT_ENA_COM_ENTRY(no_completion),
147};
148
149#define ENA_STATS_ARRAY_GLOBAL ARRAY_SIZE(ena_stats_global_strings)
150#define ENA_STATS_ARRAY_TX ARRAY_SIZE(ena_stats_tx_strings)
151#define ENA_STATS_ARRAY_RX ARRAY_SIZE(ena_stats_rx_strings)
152#define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings)
153#define ENA_STATS_ARRAY_ENI ARRAY_SIZE(ena_stats_eni_strings)
154#define ENA_STATS_ARRAY_ENA_SRD ARRAY_SIZE(ena_srd_info_strings)
155#define ENA_METRICS_ARRAY_ENI ARRAY_SIZE(ena_hw_stats_strings)
156
157static void ena_safe_update_stat(u64 *src, u64 *dst,
158 struct u64_stats_sync *syncp)
159{
160 unsigned int start;
161
162 do {
163 start = u64_stats_fetch_begin(syncp);
164 *(dst) = *src;
165 } while (u64_stats_fetch_retry(syncp, start));
166}
167
168static void ena_metrics_stats(struct ena_adapter *adapter, u64 **data)
169{
170 struct ena_com_dev *dev = adapter->ena_dev;
171 const struct ena_stats *ena_stats;
172 u64 *ptr;
173 int i;
174
175 if (ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_CUSTOMER_METRICS)) {
176 u32 supported_metrics_count;
177 int len;
178
179 supported_metrics_count = ena_com_get_customer_metric_count(ena_dev: dev);
180 len = supported_metrics_count * sizeof(u64);
181
182 /* Fill the data buffer, and advance its pointer */
183 ena_com_get_customer_metrics(ena_dev: dev, buffer: (char *)(*data), len);
184 (*data) += supported_metrics_count;
185
186 } else if (ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_ENI_STATS)) {
187 ena_com_get_eni_stats(ena_dev: dev, stats: &adapter->eni_stats);
188 /* Updating regardless of rc - once we told ethtool how many stats we have
189 * it will print that much stats. We can't leave holes in the stats
190 */
191 for (i = 0; i < ENA_STATS_ARRAY_ENI; i++) {
192 ena_stats = &ena_stats_eni_strings[i];
193
194 ptr = (u64 *)&adapter->eni_stats +
195 ena_stats->stat_offset;
196
197 ena_safe_update_stat(src: ptr, dst: (*data)++, syncp: &adapter->syncp);
198 }
199 }
200
201 if (ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_ENA_SRD_INFO)) {
202 ena_com_get_ena_srd_info(ena_dev: dev, info: &adapter->ena_srd_info);
203 /* Get ENA SRD mode */
204 ptr = (u64 *)&adapter->ena_srd_info;
205 ena_safe_update_stat(src: ptr, dst: (*data)++, syncp: &adapter->syncp);
206 for (i = 1; i < ENA_STATS_ARRAY_ENA_SRD; i++) {
207 ena_stats = &ena_srd_info_strings[i];
208 /* Wrapped within an outer struct - need to accommodate an
209 * additional offset of the ENA SRD mode that was already processed
210 */
211 ptr = (u64 *)&adapter->ena_srd_info +
212 ena_stats->stat_offset + 1;
213
214 ena_safe_update_stat(src: ptr, dst: (*data)++, syncp: &adapter->syncp);
215 }
216 }
217}
218
219static void ena_queue_stats(struct ena_adapter *adapter, u64 **data)
220{
221 const struct ena_stats *ena_stats;
222 struct ena_ring *ring;
223
224 u64 *ptr;
225 int i, j;
226
227 for (i = 0; i < adapter->num_io_queues + adapter->xdp_num_queues; i++) {
228 /* Tx stats */
229 ring = &adapter->tx_ring[i];
230
231 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
232 ena_stats = &ena_stats_tx_strings[j];
233
234 ptr = (u64 *)&ring->tx_stats + ena_stats->stat_offset;
235
236 ena_safe_update_stat(src: ptr, dst: (*data)++, syncp: &ring->syncp);
237 }
238 /* XDP TX queues don't have a RX queue counterpart */
239 if (!ENA_IS_XDP_INDEX(adapter, i)) {
240 /* Rx stats */
241 ring = &adapter->rx_ring[i];
242
243 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
244 ena_stats = &ena_stats_rx_strings[j];
245
246 ptr = (u64 *)&ring->rx_stats +
247 ena_stats->stat_offset;
248
249 ena_safe_update_stat(src: ptr, dst: (*data)++, syncp: &ring->syncp);
250 }
251 }
252 }
253}
254
255static void ena_dev_admin_queue_stats(struct ena_adapter *adapter, u64 **data)
256{
257 const struct ena_stats *ena_stats;
258 u64 *ptr;
259 int i;
260
261 for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
262 ena_stats = &ena_stats_ena_com_strings[i];
263
264 ptr = (u64 *)&adapter->ena_dev->admin_queue.stats +
265 ena_stats->stat_offset;
266
267 *(*data)++ = *ptr;
268 }
269}
270
271static void ena_get_stats(struct ena_adapter *adapter,
272 u64 *data,
273 bool hw_stats_needed)
274{
275 const struct ena_stats *ena_stats;
276 u64 *ptr;
277 int i;
278
279 for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
280 ena_stats = &ena_stats_global_strings[i];
281
282 ptr = (u64 *)&adapter->dev_stats + ena_stats->stat_offset;
283
284 ena_safe_update_stat(src: ptr, dst: data++, syncp: &adapter->syncp);
285 }
286
287 if (hw_stats_needed)
288 ena_metrics_stats(adapter, data: &data);
289
290 ena_queue_stats(adapter, data: &data);
291 ena_dev_admin_queue_stats(adapter, data: &data);
292}
293
294static void ena_get_ethtool_stats(struct net_device *netdev,
295 struct ethtool_stats *stats,
296 u64 *data)
297{
298 struct ena_adapter *adapter = netdev_priv(dev: netdev);
299
300 ena_get_stats(adapter, data, hw_stats_needed: true);
301}
302
303static int ena_get_ts_info(struct net_device *netdev,
304 struct kernel_ethtool_ts_info *info)
305{
306 struct ena_adapter *adapter = netdev_priv(dev: netdev);
307
308 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE;
309
310 info->phc_index = ena_phc_get_index(adapter);
311
312 return 0;
313}
314
315static int ena_get_sw_stats_count(struct ena_adapter *adapter)
316{
317 return adapter->num_io_queues * (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX)
318 + adapter->xdp_num_queues * ENA_STATS_ARRAY_TX
319 + ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
320}
321
322static int ena_get_hw_stats_count(struct ena_adapter *adapter)
323{
324 struct ena_com_dev *dev = adapter->ena_dev;
325 int count;
326
327 count = ENA_STATS_ARRAY_ENA_SRD * ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_ENA_SRD_INFO);
328
329 if (ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_CUSTOMER_METRICS))
330 count += ena_com_get_customer_metric_count(ena_dev: dev);
331 else if (ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_ENI_STATS))
332 count += ENA_STATS_ARRAY_ENI;
333
334 return count;
335}
336
337int ena_get_sset_count(struct net_device *netdev, int sset)
338{
339 struct ena_adapter *adapter = netdev_priv(dev: netdev);
340
341 switch (sset) {
342 case ETH_SS_STATS:
343 return ena_get_sw_stats_count(adapter) +
344 ena_get_hw_stats_count(adapter);
345 }
346
347 return -EOPNOTSUPP;
348}
349
350static void ena_metrics_stats_strings(struct ena_adapter *adapter, u8 **data)
351{
352 struct ena_com_dev *dev = adapter->ena_dev;
353 const struct ena_hw_metrics *ena_metrics;
354 const struct ena_stats *ena_stats;
355 int i;
356
357 if (ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_CUSTOMER_METRICS)) {
358 for (i = 0; i < ENA_METRICS_ARRAY_ENI; i++) {
359 if (ena_com_get_customer_metric_support(ena_dev: dev, metric_id: i)) {
360 ena_metrics = &ena_hw_stats_strings[i];
361 ethtool_puts(data, str: ena_metrics->name);
362 }
363 }
364 } else if (ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_ENI_STATS)) {
365 for (i = 0; i < ENA_STATS_ARRAY_ENI; i++) {
366 ena_stats = &ena_stats_eni_strings[i];
367 ethtool_puts(data, str: ena_stats->name);
368 }
369 }
370
371 if (ena_com_get_cap(ena_dev: dev, cap_id: ENA_ADMIN_ENA_SRD_INFO)) {
372 for (i = 0; i < ENA_STATS_ARRAY_ENA_SRD; i++) {
373 ena_stats = &ena_srd_info_strings[i];
374 ethtool_puts(data, str: ena_stats->name);
375 }
376 }
377}
378
379static void ena_queue_strings(struct ena_adapter *adapter, u8 **data)
380{
381 const struct ena_stats *ena_stats;
382 bool is_xdp;
383 int i, j;
384
385 for (i = 0; i < adapter->num_io_queues + adapter->xdp_num_queues; i++) {
386 is_xdp = ENA_IS_XDP_INDEX(adapter, i);
387 /* Tx stats */
388 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
389 ena_stats = &ena_stats_tx_strings[j];
390
391 ethtool_sprintf(data,
392 fmt: "queue_%u_%s_%s", i,
393 is_xdp ? "xdp_tx" : "tx",
394 ena_stats->name);
395 }
396
397 /* In XDP there isn't an RX queue counterpart */
398 if (is_xdp)
399 continue;
400
401 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
402 ena_stats = &ena_stats_rx_strings[j];
403
404 ethtool_sprintf(data, fmt: "queue_%u_rx_%s", i, ena_stats->name);
405 }
406 }
407}
408
409static void ena_com_dev_strings(u8 **data)
410{
411 const struct ena_stats *ena_stats;
412 int i;
413
414 for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
415 ena_stats = &ena_stats_ena_com_strings[i];
416
417 ethtool_sprintf(data,
418 fmt: "ena_admin_q_%s", ena_stats->name);
419 }
420}
421
422static void ena_get_strings(struct ena_adapter *adapter,
423 u8 *data,
424 bool hw_stats_needed)
425{
426 const struct ena_stats *ena_stats;
427 int i;
428
429 for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
430 ena_stats = &ena_stats_global_strings[i];
431 ethtool_puts(data: &data, str: ena_stats->name);
432 }
433
434 if (hw_stats_needed)
435 ena_metrics_stats_strings(adapter, data: &data);
436
437 ena_queue_strings(adapter, data: &data);
438 ena_com_dev_strings(data: &data);
439}
440
441static void ena_get_ethtool_strings(struct net_device *netdev,
442 u32 sset,
443 u8 *data)
444{
445 struct ena_adapter *adapter = netdev_priv(dev: netdev);
446
447 switch (sset) {
448 case ETH_SS_STATS:
449 ena_get_strings(adapter, data, hw_stats_needed: true);
450 break;
451 }
452}
453
454static int ena_get_link_ksettings(struct net_device *netdev,
455 struct ethtool_link_ksettings *link_ksettings)
456{
457 struct ena_adapter *adapter = netdev_priv(dev: netdev);
458 struct ena_com_dev *ena_dev = adapter->ena_dev;
459 struct ena_admin_get_feature_link_desc *link;
460 struct ena_admin_get_feat_resp feat_resp;
461 int rc;
462
463 rc = ena_com_get_link_params(ena_dev, resp: &feat_resp);
464 if (rc)
465 return rc;
466
467 link = &feat_resp.u.link;
468 link_ksettings->base.speed = link->speed;
469
470 if (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) {
471 ethtool_link_ksettings_add_link_mode(link_ksettings,
472 supported, Autoneg);
473 ethtool_link_ksettings_add_link_mode(link_ksettings,
474 supported, Autoneg);
475 }
476
477 link_ksettings->base.autoneg =
478 (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) ?
479 AUTONEG_ENABLE : AUTONEG_DISABLE;
480
481 link_ksettings->base.duplex = DUPLEX_FULL;
482
483 return 0;
484}
485
486static int ena_get_coalesce(struct net_device *net_dev,
487 struct ethtool_coalesce *coalesce,
488 struct kernel_ethtool_coalesce *kernel_coal,
489 struct netlink_ext_ack *extack)
490{
491 struct ena_adapter *adapter = netdev_priv(dev: net_dev);
492 struct ena_com_dev *ena_dev = adapter->ena_dev;
493
494 if (!ena_com_interrupt_moderation_supported(ena_dev))
495 return -EOPNOTSUPP;
496
497 coalesce->tx_coalesce_usecs =
498 ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) *
499 ena_dev->intr_delay_resolution;
500
501 coalesce->rx_coalesce_usecs =
502 ena_com_get_nonadaptive_moderation_interval_rx(ena_dev)
503 * ena_dev->intr_delay_resolution;
504
505 coalesce->use_adaptive_rx_coalesce =
506 ena_com_get_adaptive_moderation_enabled(ena_dev);
507
508 return 0;
509}
510
511static void ena_update_tx_rings_nonadaptive_intr_moderation(struct ena_adapter *adapter)
512{
513 unsigned int val;
514 int i;
515
516 val = ena_com_get_nonadaptive_moderation_interval_tx(ena_dev: adapter->ena_dev);
517
518 for (i = 0; i < adapter->num_io_queues; i++)
519 adapter->tx_ring[i].smoothed_interval = val;
520}
521
522static void ena_update_rx_rings_nonadaptive_intr_moderation(struct ena_adapter *adapter)
523{
524 unsigned int val;
525 int i;
526
527 val = ena_com_get_nonadaptive_moderation_interval_rx(ena_dev: adapter->ena_dev);
528
529 for (i = 0; i < adapter->num_io_queues; i++)
530 adapter->rx_ring[i].smoothed_interval = val;
531}
532
533static int ena_set_coalesce(struct net_device *net_dev,
534 struct ethtool_coalesce *coalesce,
535 struct kernel_ethtool_coalesce *kernel_coal,
536 struct netlink_ext_ack *extack)
537{
538 struct ena_adapter *adapter = netdev_priv(dev: net_dev);
539 struct ena_com_dev *ena_dev = adapter->ena_dev;
540 int rc;
541
542 if (!ena_com_interrupt_moderation_supported(ena_dev))
543 return -EOPNOTSUPP;
544
545 rc = ena_com_update_nonadaptive_moderation_interval_tx(ena_dev,
546 tx_coalesce_usecs: coalesce->tx_coalesce_usecs);
547 if (rc)
548 return rc;
549
550 ena_update_tx_rings_nonadaptive_intr_moderation(adapter);
551
552 rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
553 rx_coalesce_usecs: coalesce->rx_coalesce_usecs);
554 if (rc)
555 return rc;
556
557 ena_update_rx_rings_nonadaptive_intr_moderation(adapter);
558
559 if (coalesce->use_adaptive_rx_coalesce &&
560 !ena_com_get_adaptive_moderation_enabled(ena_dev))
561 ena_com_enable_adaptive_moderation(ena_dev);
562
563 if (!coalesce->use_adaptive_rx_coalesce &&
564 ena_com_get_adaptive_moderation_enabled(ena_dev))
565 ena_com_disable_adaptive_moderation(ena_dev);
566
567 return 0;
568}
569
570static u32 ena_get_msglevel(struct net_device *netdev)
571{
572 struct ena_adapter *adapter = netdev_priv(dev: netdev);
573
574 return adapter->msg_enable;
575}
576
577static void ena_set_msglevel(struct net_device *netdev, u32 value)
578{
579 struct ena_adapter *adapter = netdev_priv(dev: netdev);
580
581 adapter->msg_enable = value;
582}
583
584static void ena_get_drvinfo(struct net_device *dev,
585 struct ethtool_drvinfo *info)
586{
587 struct ena_adapter *adapter = netdev_priv(dev);
588 ssize_t ret = 0;
589
590 ret = strscpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
591 if (ret < 0)
592 netif_dbg(adapter, drv, dev,
593 "module name will be truncated, status = %zd\n", ret);
594
595 ret = strscpy(info->bus_info, pci_name(adapter->pdev),
596 sizeof(info->bus_info));
597 if (ret < 0)
598 netif_dbg(adapter, drv, dev,
599 "bus info will be truncated, status = %zd\n", ret);
600}
601
602static void ena_get_ringparam(struct net_device *netdev,
603 struct ethtool_ringparam *ring,
604 struct kernel_ethtool_ringparam *kernel_ring,
605 struct netlink_ext_ack *extack)
606{
607 struct ena_adapter *adapter = netdev_priv(dev: netdev);
608
609 ring->tx_max_pending = adapter->max_tx_ring_size;
610 ring->rx_max_pending = adapter->max_rx_ring_size;
611 if (adapter->ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
612 bool large_llq_supported = adapter->large_llq_header_supported;
613
614 kernel_ring->tx_push = true;
615 kernel_ring->tx_push_buf_len = adapter->ena_dev->tx_max_header_size;
616 if (large_llq_supported)
617 kernel_ring->tx_push_buf_max_len = ENA_LLQ_LARGE_HEADER;
618 else
619 kernel_ring->tx_push_buf_max_len = ENA_LLQ_HEADER;
620 } else {
621 kernel_ring->tx_push = false;
622 kernel_ring->tx_push_buf_max_len = 0;
623 kernel_ring->tx_push_buf_len = 0;
624 }
625
626 ring->tx_pending = adapter->tx_ring[0].ring_size;
627 ring->rx_pending = adapter->rx_ring[0].ring_size;
628}
629
630static int ena_set_ringparam(struct net_device *netdev,
631 struct ethtool_ringparam *ring,
632 struct kernel_ethtool_ringparam *kernel_ring,
633 struct netlink_ext_ack *extack)
634{
635 struct ena_adapter *adapter = netdev_priv(dev: netdev);
636 u32 new_tx_size, new_rx_size, new_tx_push_buf_len;
637 bool changed = false;
638
639 new_tx_size = ring->tx_pending < ENA_MIN_RING_SIZE ?
640 ENA_MIN_RING_SIZE : ring->tx_pending;
641 new_tx_size = rounddown_pow_of_two(new_tx_size);
642
643 new_rx_size = ring->rx_pending < ENA_MIN_RING_SIZE ?
644 ENA_MIN_RING_SIZE : ring->rx_pending;
645 new_rx_size = rounddown_pow_of_two(new_rx_size);
646
647 changed |= new_tx_size != adapter->requested_tx_ring_size ||
648 new_rx_size != adapter->requested_rx_ring_size;
649
650 /* This value is ignored if LLQ is not supported */
651 new_tx_push_buf_len = adapter->ena_dev->tx_max_header_size;
652
653 if ((adapter->ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) !=
654 kernel_ring->tx_push) {
655 NL_SET_ERR_MSG_MOD(extack, "Push mode state cannot be modified");
656 return -EINVAL;
657 }
658
659 /* Validate that the push buffer is supported on the underlying device */
660 if (kernel_ring->tx_push_buf_len) {
661 enum ena_admin_placement_policy_type placement;
662
663 new_tx_push_buf_len = kernel_ring->tx_push_buf_len;
664
665 placement = adapter->ena_dev->tx_mem_queue_type;
666 if (placement == ENA_ADMIN_PLACEMENT_POLICY_HOST)
667 return -EOPNOTSUPP;
668
669 if (new_tx_push_buf_len != ENA_LLQ_HEADER &&
670 new_tx_push_buf_len != ENA_LLQ_LARGE_HEADER) {
671 bool large_llq_sup = adapter->large_llq_header_supported;
672 char large_llq_size_str[40];
673
674 snprintf(buf: large_llq_size_str, size: 40, fmt: ", %lu", ENA_LLQ_LARGE_HEADER);
675
676 NL_SET_ERR_MSG_FMT_MOD(extack,
677 "Supported tx push buff values: [%lu%s]",
678 ENA_LLQ_HEADER,
679 large_llq_sup ? large_llq_size_str : "");
680
681 return -EINVAL;
682 }
683
684 changed |= new_tx_push_buf_len != adapter->ena_dev->tx_max_header_size;
685 }
686
687 if (!changed)
688 return 0;
689
690 return ena_update_queue_params(adapter, new_tx_size, new_rx_size,
691 new_llq_header_len: new_tx_push_buf_len);
692}
693
694static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
695{
696 u32 data = 0;
697
698 if (hash_fields & ENA_ADMIN_RSS_L2_DA)
699 data |= RXH_L2DA;
700
701 if (hash_fields & ENA_ADMIN_RSS_L3_DA)
702 data |= RXH_IP_DST;
703
704 if (hash_fields & ENA_ADMIN_RSS_L3_SA)
705 data |= RXH_IP_SRC;
706
707 if (hash_fields & ENA_ADMIN_RSS_L4_DP)
708 data |= RXH_L4_B_2_3;
709
710 if (hash_fields & ENA_ADMIN_RSS_L4_SP)
711 data |= RXH_L4_B_0_1;
712
713 return data;
714}
715
716static u16 ena_flow_data_to_flow_hash(u32 hash_fields)
717{
718 u16 data = 0;
719
720 if (hash_fields & RXH_L2DA)
721 data |= ENA_ADMIN_RSS_L2_DA;
722
723 if (hash_fields & RXH_IP_DST)
724 data |= ENA_ADMIN_RSS_L3_DA;
725
726 if (hash_fields & RXH_IP_SRC)
727 data |= ENA_ADMIN_RSS_L3_SA;
728
729 if (hash_fields & RXH_L4_B_2_3)
730 data |= ENA_ADMIN_RSS_L4_DP;
731
732 if (hash_fields & RXH_L4_B_0_1)
733 data |= ENA_ADMIN_RSS_L4_SP;
734
735 return data;
736}
737
738static int ena_get_rxfh_fields(struct net_device *netdev,
739 struct ethtool_rxfh_fields *cmd)
740{
741 struct ena_adapter *adapter = netdev_priv(dev: netdev);
742 struct ena_com_dev *ena_dev = adapter->ena_dev;
743 enum ena_admin_flow_hash_proto proto;
744 u16 hash_fields;
745 int rc;
746
747 cmd->data = 0;
748
749 switch (cmd->flow_type) {
750 case TCP_V4_FLOW:
751 proto = ENA_ADMIN_RSS_TCP4;
752 break;
753 case UDP_V4_FLOW:
754 proto = ENA_ADMIN_RSS_UDP4;
755 break;
756 case TCP_V6_FLOW:
757 proto = ENA_ADMIN_RSS_TCP6;
758 break;
759 case UDP_V6_FLOW:
760 proto = ENA_ADMIN_RSS_UDP6;
761 break;
762 case IPV4_FLOW:
763 proto = ENA_ADMIN_RSS_IP4;
764 break;
765 case IPV6_FLOW:
766 proto = ENA_ADMIN_RSS_IP6;
767 break;
768 case ETHER_FLOW:
769 proto = ENA_ADMIN_RSS_NOT_IP;
770 break;
771 case AH_V4_FLOW:
772 case ESP_V4_FLOW:
773 case AH_V6_FLOW:
774 case ESP_V6_FLOW:
775 case SCTP_V4_FLOW:
776 case AH_ESP_V4_FLOW:
777 return -EOPNOTSUPP;
778 default:
779 return -EINVAL;
780 }
781
782 rc = ena_com_get_hash_ctrl(ena_dev, proto, fields: &hash_fields);
783 if (rc)
784 return rc;
785
786 cmd->data = ena_flow_hash_to_flow_type(hash_fields);
787
788 return 0;
789}
790
791static int ena_set_rxfh_fields(struct net_device *netdev,
792 const struct ethtool_rxfh_fields *cmd,
793 struct netlink_ext_ack *extack)
794{
795 struct ena_adapter *adapter = netdev_priv(dev: netdev);
796 struct ena_com_dev *ena_dev = adapter->ena_dev;
797 enum ena_admin_flow_hash_proto proto;
798 u16 hash_fields;
799
800 switch (cmd->flow_type) {
801 case TCP_V4_FLOW:
802 proto = ENA_ADMIN_RSS_TCP4;
803 break;
804 case UDP_V4_FLOW:
805 proto = ENA_ADMIN_RSS_UDP4;
806 break;
807 case TCP_V6_FLOW:
808 proto = ENA_ADMIN_RSS_TCP6;
809 break;
810 case UDP_V6_FLOW:
811 proto = ENA_ADMIN_RSS_UDP6;
812 break;
813 case IPV4_FLOW:
814 proto = ENA_ADMIN_RSS_IP4;
815 break;
816 case IPV6_FLOW:
817 proto = ENA_ADMIN_RSS_IP6;
818 break;
819 case ETHER_FLOW:
820 proto = ENA_ADMIN_RSS_NOT_IP;
821 break;
822 case AH_V4_FLOW:
823 case ESP_V4_FLOW:
824 case AH_V6_FLOW:
825 case ESP_V6_FLOW:
826 case SCTP_V4_FLOW:
827 case AH_ESP_V4_FLOW:
828 return -EOPNOTSUPP;
829 default:
830 return -EINVAL;
831 }
832
833 hash_fields = ena_flow_data_to_flow_hash(hash_fields: cmd->data);
834
835 return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields);
836}
837
838static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
839 u32 *rules)
840{
841 struct ena_adapter *adapter = netdev_priv(dev: netdev);
842 int rc = 0;
843
844 switch (info->cmd) {
845 case ETHTOOL_GRXRINGS:
846 info->data = adapter->num_io_queues;
847 rc = 0;
848 break;
849 case ETHTOOL_GRXCLSRLCNT:
850 case ETHTOOL_GRXCLSRULE:
851 case ETHTOOL_GRXCLSRLALL:
852 default:
853 netif_err(adapter, drv, netdev,
854 "Command parameter %d is not supported\n", info->cmd);
855 rc = -EOPNOTSUPP;
856 }
857
858 return rc;
859}
860
861static u32 ena_get_rxfh_indir_size(struct net_device *netdev)
862{
863 return ENA_RX_RSS_TABLE_SIZE;
864}
865
866static u32 ena_get_rxfh_key_size(struct net_device *netdev)
867{
868 struct ena_adapter *adapter = netdev_priv(dev: netdev);
869 struct ena_rss *rss = &adapter->ena_dev->rss;
870
871 return rss->hash_key ? ENA_HASH_KEY_SIZE : 0;
872}
873
874static int ena_indirection_table_set(struct ena_adapter *adapter,
875 const u32 *indir)
876{
877 struct ena_com_dev *ena_dev = adapter->ena_dev;
878 int i, rc;
879
880 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
881 rc = ena_com_indirect_table_fill_entry(ena_dev,
882 entry_idx: i,
883 ENA_IO_RXQ_IDX(indir[i]));
884 if (unlikely(rc)) {
885 netif_err(adapter, drv, adapter->netdev,
886 "Cannot fill indirect table (index is too large)\n");
887 return rc;
888 }
889 }
890
891 rc = ena_com_indirect_table_set(ena_dev);
892 if (rc) {
893 netif_err(adapter, drv, adapter->netdev,
894 "Cannot set indirect table\n");
895 return rc == -EPERM ? -EOPNOTSUPP : rc;
896 }
897 return rc;
898}
899
900static int ena_indirection_table_get(struct ena_adapter *adapter, u32 *indir)
901{
902 struct ena_com_dev *ena_dev = adapter->ena_dev;
903 int i, rc;
904
905 if (!indir)
906 return 0;
907
908 rc = ena_com_indirect_table_get(ena_dev, ind_tbl: indir);
909 if (rc)
910 return rc;
911
912 /* Our internal representation of the indices is: even indices
913 * for Tx and uneven indices for Rx. We need to convert the Rx
914 * indices to be consecutive
915 */
916 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++)
917 indir[i] = ENA_IO_RXQ_IDX_TO_COMBINED_IDX(indir[i]);
918
919 return rc;
920}
921
922static int ena_get_rxfh(struct net_device *netdev,
923 struct ethtool_rxfh_param *rxfh)
924{
925 struct ena_adapter *adapter = netdev_priv(dev: netdev);
926 enum ena_admin_hash_functions ena_func;
927 u8 func;
928 int rc;
929
930 rc = ena_indirection_table_get(adapter, indir: rxfh->indir);
931 if (rc)
932 return rc;
933
934 /* We call this function in order to check if the device
935 * supports getting/setting the hash function.
936 */
937 rc = ena_com_get_hash_function(ena_dev: adapter->ena_dev, func: &ena_func);
938 if (rc) {
939 if (rc == -EOPNOTSUPP)
940 rc = 0;
941
942 return rc;
943 }
944
945 rc = ena_com_get_hash_key(ena_dev: adapter->ena_dev, key: rxfh->key);
946 if (rc)
947 return rc;
948
949 switch (ena_func) {
950 case ENA_ADMIN_TOEPLITZ:
951 func = ETH_RSS_HASH_TOP;
952 break;
953 case ENA_ADMIN_CRC32:
954 func = ETH_RSS_HASH_CRC32;
955 break;
956 default:
957 netif_err(adapter, drv, netdev,
958 "Command parameter is not supported\n");
959 return -EOPNOTSUPP;
960 }
961
962 rxfh->hfunc = func;
963
964 return 0;
965}
966
967static int ena_set_rxfh(struct net_device *netdev,
968 struct ethtool_rxfh_param *rxfh,
969 struct netlink_ext_ack *extack)
970{
971 struct ena_adapter *adapter = netdev_priv(dev: netdev);
972 struct ena_com_dev *ena_dev = adapter->ena_dev;
973 enum ena_admin_hash_functions func = 0;
974 int rc;
975
976 if (rxfh->indir) {
977 rc = ena_indirection_table_set(adapter, indir: rxfh->indir);
978 if (rc)
979 return rc;
980 }
981
982 switch (rxfh->hfunc) {
983 case ETH_RSS_HASH_NO_CHANGE:
984 func = ena_com_get_current_hash_function(ena_dev);
985 break;
986 case ETH_RSS_HASH_TOP:
987 func = ENA_ADMIN_TOEPLITZ;
988 break;
989 case ETH_RSS_HASH_CRC32:
990 func = ENA_ADMIN_CRC32;
991 break;
992 default:
993 netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n",
994 rxfh->hfunc);
995 return -EOPNOTSUPP;
996 }
997
998 if (rxfh->key || func) {
999 rc = ena_com_fill_hash_function(ena_dev, func, key: rxfh->key,
1000 ENA_HASH_KEY_SIZE,
1001 init_val: 0xFFFFFFFF);
1002 if (unlikely(rc)) {
1003 netif_err(adapter, drv, netdev, "Cannot fill key\n");
1004 return rc == -EPERM ? -EOPNOTSUPP : rc;
1005 }
1006 }
1007
1008 return 0;
1009}
1010
1011static void ena_get_channels(struct net_device *netdev,
1012 struct ethtool_channels *channels)
1013{
1014 struct ena_adapter *adapter = netdev_priv(dev: netdev);
1015
1016 channels->max_combined = adapter->max_num_io_queues;
1017 channels->combined_count = adapter->num_io_queues;
1018}
1019
1020static int ena_set_channels(struct net_device *netdev,
1021 struct ethtool_channels *channels)
1022{
1023 struct ena_adapter *adapter = netdev_priv(dev: netdev);
1024 u32 count = channels->combined_count;
1025 /* The check for max value is already done in ethtool */
1026 if (count < ENA_MIN_NUM_IO_QUEUES)
1027 return -EINVAL;
1028
1029 if (!ena_xdp_legal_queue_count(adapter, queues: count)) {
1030 if (ena_xdp_present(adapter))
1031 return -EINVAL;
1032
1033 xdp_clear_features_flag(dev: netdev);
1034 } else {
1035 xdp_set_features_flag(dev: netdev,
1036 val: NETDEV_XDP_ACT_BASIC |
1037 NETDEV_XDP_ACT_REDIRECT);
1038 }
1039
1040 return ena_update_queue_count(adapter, new_channel_count: count);
1041}
1042
1043static int ena_get_tunable(struct net_device *netdev,
1044 const struct ethtool_tunable *tuna, void *data)
1045{
1046 struct ena_adapter *adapter = netdev_priv(dev: netdev);
1047 int ret = 0;
1048
1049 switch (tuna->id) {
1050 case ETHTOOL_RX_COPYBREAK:
1051 *(u32 *)data = adapter->rx_copybreak;
1052 break;
1053 default:
1054 ret = -EINVAL;
1055 break;
1056 }
1057
1058 return ret;
1059}
1060
1061static int ena_set_tunable(struct net_device *netdev,
1062 const struct ethtool_tunable *tuna,
1063 const void *data)
1064{
1065 struct ena_adapter *adapter = netdev_priv(dev: netdev);
1066 int ret = 0;
1067 u32 len;
1068
1069 switch (tuna->id) {
1070 case ETHTOOL_RX_COPYBREAK:
1071 len = *(u32 *)data;
1072 ret = ena_set_rx_copybreak(adapter, rx_copybreak: len);
1073 break;
1074 default:
1075 ret = -EINVAL;
1076 break;
1077 }
1078
1079 return ret;
1080}
1081
1082static const struct ethtool_ops ena_ethtool_ops = {
1083 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1084 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
1085 .supported_ring_params = ETHTOOL_RING_USE_TX_PUSH_BUF_LEN |
1086 ETHTOOL_RING_USE_TX_PUSH,
1087 .get_link_ksettings = ena_get_link_ksettings,
1088 .get_drvinfo = ena_get_drvinfo,
1089 .get_msglevel = ena_get_msglevel,
1090 .set_msglevel = ena_set_msglevel,
1091 .get_link = ethtool_op_get_link,
1092 .get_coalesce = ena_get_coalesce,
1093 .set_coalesce = ena_set_coalesce,
1094 .get_ringparam = ena_get_ringparam,
1095 .set_ringparam = ena_set_ringparam,
1096 .get_sset_count = ena_get_sset_count,
1097 .get_strings = ena_get_ethtool_strings,
1098 .get_ethtool_stats = ena_get_ethtool_stats,
1099 .get_rxnfc = ena_get_rxnfc,
1100 .get_rxfh_indir_size = ena_get_rxfh_indir_size,
1101 .get_rxfh_key_size = ena_get_rxfh_key_size,
1102 .get_rxfh = ena_get_rxfh,
1103 .set_rxfh = ena_set_rxfh,
1104 .get_rxfh_fields = ena_get_rxfh_fields,
1105 .set_rxfh_fields = ena_set_rxfh_fields,
1106 .get_channels = ena_get_channels,
1107 .set_channels = ena_set_channels,
1108 .get_tunable = ena_get_tunable,
1109 .set_tunable = ena_set_tunable,
1110 .get_ts_info = ena_get_ts_info,
1111};
1112
1113void ena_set_ethtool_ops(struct net_device *netdev)
1114{
1115 netdev->ethtool_ops = &ena_ethtool_ops;
1116}
1117
1118static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
1119{
1120 struct net_device *netdev = adapter->netdev;
1121 u8 *strings_buf;
1122 u64 *data_buf;
1123 int strings_num;
1124 int i, rc;
1125
1126 strings_num = ena_get_sw_stats_count(adapter);
1127 if (strings_num <= 0) {
1128 netif_err(adapter, drv, netdev, "Can't get stats num\n");
1129 return;
1130 }
1131
1132 strings_buf = kcalloc(strings_num, ETH_GSTRING_LEN, GFP_ATOMIC);
1133 if (!strings_buf) {
1134 netif_err(adapter, drv, netdev,
1135 "Failed to allocate strings_buf\n");
1136 return;
1137 }
1138
1139 data_buf = kcalloc(strings_num, sizeof(u64), GFP_ATOMIC);
1140 if (!data_buf) {
1141 netif_err(adapter, drv, netdev,
1142 "Failed to allocate data buf\n");
1143 kfree(objp: strings_buf);
1144 return;
1145 }
1146
1147 ena_get_strings(adapter, data: strings_buf, hw_stats_needed: false);
1148 ena_get_stats(adapter, data: data_buf, hw_stats_needed: false);
1149
1150 /* If there is a buffer, dump stats, otherwise print them to dmesg */
1151 if (buf)
1152 for (i = 0; i < strings_num; i++) {
1153 rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
1154 fmt: "%s %llu\n",
1155 strings_buf + i * ETH_GSTRING_LEN,
1156 data_buf[i]);
1157 buf += rc;
1158 }
1159 else
1160 for (i = 0; i < strings_num; i++)
1161 netif_err(adapter, drv, netdev, "%s: %llu\n",
1162 strings_buf + i * ETH_GSTRING_LEN,
1163 data_buf[i]);
1164
1165 kfree(objp: strings_buf);
1166 kfree(objp: data_buf);
1167}
1168
1169void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)
1170{
1171 if (!buf)
1172 return;
1173
1174 ena_dump_stats_ex(adapter, buf);
1175}
1176
1177void ena_dump_stats_to_dmesg(struct ena_adapter *adapter)
1178{
1179 ena_dump_stats_ex(adapter, NULL);
1180}
1181

source code of linux/drivers/net/ethernet/amazon/ena/ena_ethtool.c