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(syncp);
122 *(dst) = *src;
123 } while (u64_stats_fetch_retry(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 strscpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
466 strscpy(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 if (adapter->ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
480 bool large_llq_supported = adapter->large_llq_header_supported;
481
482 kernel_ring->tx_push = true;
483 kernel_ring->tx_push_buf_len = adapter->ena_dev->tx_max_header_size;
484 if (large_llq_supported)
485 kernel_ring->tx_push_buf_max_len = ENA_LLQ_LARGE_HEADER;
486 else
487 kernel_ring->tx_push_buf_max_len = ENA_LLQ_HEADER;
488 } else {
489 kernel_ring->tx_push = false;
490 kernel_ring->tx_push_buf_max_len = 0;
491 kernel_ring->tx_push_buf_len = 0;
492 }
493
494 ring->tx_pending = adapter->tx_ring[0].ring_size;
495 ring->rx_pending = adapter->rx_ring[0].ring_size;
496 }
497
ena_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)498 static int ena_set_ringparam(struct net_device *netdev,
499 struct ethtool_ringparam *ring,
500 struct kernel_ethtool_ringparam *kernel_ring,
501 struct netlink_ext_ack *extack)
502 {
503 struct ena_adapter *adapter = netdev_priv(netdev);
504 u32 new_tx_size, new_rx_size, new_tx_push_buf_len;
505 bool changed = false;
506
507 new_tx_size = ring->tx_pending < ENA_MIN_RING_SIZE ?
508 ENA_MIN_RING_SIZE : ring->tx_pending;
509 new_tx_size = rounddown_pow_of_two(new_tx_size);
510
511 new_rx_size = ring->rx_pending < ENA_MIN_RING_SIZE ?
512 ENA_MIN_RING_SIZE : ring->rx_pending;
513 new_rx_size = rounddown_pow_of_two(new_rx_size);
514
515 changed |= new_tx_size != adapter->requested_tx_ring_size ||
516 new_rx_size != adapter->requested_rx_ring_size;
517
518 /* This value is ignored if LLQ is not supported */
519 new_tx_push_buf_len = adapter->ena_dev->tx_max_header_size;
520
521 if ((adapter->ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) !=
522 kernel_ring->tx_push) {
523 NL_SET_ERR_MSG_MOD(extack, "Push mode state cannot be modified");
524 return -EINVAL;
525 }
526
527 /* Validate that the push buffer is supported on the underlying device */
528 if (kernel_ring->tx_push_buf_len) {
529 enum ena_admin_placement_policy_type placement;
530
531 new_tx_push_buf_len = kernel_ring->tx_push_buf_len;
532
533 placement = adapter->ena_dev->tx_mem_queue_type;
534 if (placement == ENA_ADMIN_PLACEMENT_POLICY_HOST)
535 return -EOPNOTSUPP;
536
537 if (new_tx_push_buf_len != ENA_LLQ_HEADER &&
538 new_tx_push_buf_len != ENA_LLQ_LARGE_HEADER) {
539 bool large_llq_sup = adapter->large_llq_header_supported;
540 char large_llq_size_str[40];
541
542 snprintf(large_llq_size_str, 40, ", %lu", ENA_LLQ_LARGE_HEADER);
543
544 NL_SET_ERR_MSG_FMT_MOD(extack,
545 "Supported tx push buff values: [%lu%s]",
546 ENA_LLQ_HEADER,
547 large_llq_sup ? large_llq_size_str : "");
548
549 return -EINVAL;
550 }
551
552 changed |= new_tx_push_buf_len != adapter->ena_dev->tx_max_header_size;
553 }
554
555 if (!changed)
556 return 0;
557
558 return ena_update_queue_params(adapter, new_tx_size, new_rx_size,
559 new_tx_push_buf_len);
560 }
561
ena_flow_hash_to_flow_type(u16 hash_fields)562 static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
563 {
564 u32 data = 0;
565
566 if (hash_fields & ENA_ADMIN_RSS_L2_DA)
567 data |= RXH_L2DA;
568
569 if (hash_fields & ENA_ADMIN_RSS_L3_DA)
570 data |= RXH_IP_DST;
571
572 if (hash_fields & ENA_ADMIN_RSS_L3_SA)
573 data |= RXH_IP_SRC;
574
575 if (hash_fields & ENA_ADMIN_RSS_L4_DP)
576 data |= RXH_L4_B_2_3;
577
578 if (hash_fields & ENA_ADMIN_RSS_L4_SP)
579 data |= RXH_L4_B_0_1;
580
581 return data;
582 }
583
ena_flow_data_to_flow_hash(u32 hash_fields)584 static u16 ena_flow_data_to_flow_hash(u32 hash_fields)
585 {
586 u16 data = 0;
587
588 if (hash_fields & RXH_L2DA)
589 data |= ENA_ADMIN_RSS_L2_DA;
590
591 if (hash_fields & RXH_IP_DST)
592 data |= ENA_ADMIN_RSS_L3_DA;
593
594 if (hash_fields & RXH_IP_SRC)
595 data |= ENA_ADMIN_RSS_L3_SA;
596
597 if (hash_fields & RXH_L4_B_2_3)
598 data |= ENA_ADMIN_RSS_L4_DP;
599
600 if (hash_fields & RXH_L4_B_0_1)
601 data |= ENA_ADMIN_RSS_L4_SP;
602
603 return data;
604 }
605
ena_get_rss_hash(struct ena_com_dev * ena_dev,struct ethtool_rxnfc * cmd)606 static int ena_get_rss_hash(struct ena_com_dev *ena_dev,
607 struct ethtool_rxnfc *cmd)
608 {
609 enum ena_admin_flow_hash_proto proto;
610 u16 hash_fields;
611 int rc;
612
613 cmd->data = 0;
614
615 switch (cmd->flow_type) {
616 case TCP_V4_FLOW:
617 proto = ENA_ADMIN_RSS_TCP4;
618 break;
619 case UDP_V4_FLOW:
620 proto = ENA_ADMIN_RSS_UDP4;
621 break;
622 case TCP_V6_FLOW:
623 proto = ENA_ADMIN_RSS_TCP6;
624 break;
625 case UDP_V6_FLOW:
626 proto = ENA_ADMIN_RSS_UDP6;
627 break;
628 case IPV4_FLOW:
629 proto = ENA_ADMIN_RSS_IP4;
630 break;
631 case IPV6_FLOW:
632 proto = ENA_ADMIN_RSS_IP6;
633 break;
634 case ETHER_FLOW:
635 proto = ENA_ADMIN_RSS_NOT_IP;
636 break;
637 case AH_V4_FLOW:
638 case ESP_V4_FLOW:
639 case AH_V6_FLOW:
640 case ESP_V6_FLOW:
641 case SCTP_V4_FLOW:
642 case AH_ESP_V4_FLOW:
643 return -EOPNOTSUPP;
644 default:
645 return -EINVAL;
646 }
647
648 rc = ena_com_get_hash_ctrl(ena_dev, proto, &hash_fields);
649 if (rc)
650 return rc;
651
652 cmd->data = ena_flow_hash_to_flow_type(hash_fields);
653
654 return 0;
655 }
656
ena_set_rss_hash(struct ena_com_dev * ena_dev,struct ethtool_rxnfc * cmd)657 static int ena_set_rss_hash(struct ena_com_dev *ena_dev,
658 struct ethtool_rxnfc *cmd)
659 {
660 enum ena_admin_flow_hash_proto proto;
661 u16 hash_fields;
662
663 switch (cmd->flow_type) {
664 case TCP_V4_FLOW:
665 proto = ENA_ADMIN_RSS_TCP4;
666 break;
667 case UDP_V4_FLOW:
668 proto = ENA_ADMIN_RSS_UDP4;
669 break;
670 case TCP_V6_FLOW:
671 proto = ENA_ADMIN_RSS_TCP6;
672 break;
673 case UDP_V6_FLOW:
674 proto = ENA_ADMIN_RSS_UDP6;
675 break;
676 case IPV4_FLOW:
677 proto = ENA_ADMIN_RSS_IP4;
678 break;
679 case IPV6_FLOW:
680 proto = ENA_ADMIN_RSS_IP6;
681 break;
682 case ETHER_FLOW:
683 proto = ENA_ADMIN_RSS_NOT_IP;
684 break;
685 case AH_V4_FLOW:
686 case ESP_V4_FLOW:
687 case AH_V6_FLOW:
688 case ESP_V6_FLOW:
689 case SCTP_V4_FLOW:
690 case AH_ESP_V4_FLOW:
691 return -EOPNOTSUPP;
692 default:
693 return -EINVAL;
694 }
695
696 hash_fields = ena_flow_data_to_flow_hash(cmd->data);
697
698 return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields);
699 }
700
ena_set_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info)701 static int ena_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
702 {
703 struct ena_adapter *adapter = netdev_priv(netdev);
704 int rc = 0;
705
706 switch (info->cmd) {
707 case ETHTOOL_SRXFH:
708 rc = ena_set_rss_hash(adapter->ena_dev, info);
709 break;
710 case ETHTOOL_SRXCLSRLDEL:
711 case ETHTOOL_SRXCLSRLINS:
712 default:
713 netif_err(adapter, drv, netdev,
714 "Command parameter %d is not supported\n", info->cmd);
715 rc = -EOPNOTSUPP;
716 }
717
718 return rc;
719 }
720
ena_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info,u32 * rules)721 static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
722 u32 *rules)
723 {
724 struct ena_adapter *adapter = netdev_priv(netdev);
725 int rc = 0;
726
727 switch (info->cmd) {
728 case ETHTOOL_GRXRINGS:
729 info->data = adapter->num_io_queues;
730 rc = 0;
731 break;
732 case ETHTOOL_GRXFH:
733 rc = ena_get_rss_hash(adapter->ena_dev, info);
734 break;
735 case ETHTOOL_GRXCLSRLCNT:
736 case ETHTOOL_GRXCLSRULE:
737 case ETHTOOL_GRXCLSRLALL:
738 default:
739 netif_err(adapter, drv, netdev,
740 "Command parameter %d is not supported\n", info->cmd);
741 rc = -EOPNOTSUPP;
742 }
743
744 return rc;
745 }
746
ena_get_rxfh_indir_size(struct net_device * netdev)747 static u32 ena_get_rxfh_indir_size(struct net_device *netdev)
748 {
749 return ENA_RX_RSS_TABLE_SIZE;
750 }
751
ena_get_rxfh_key_size(struct net_device * netdev)752 static u32 ena_get_rxfh_key_size(struct net_device *netdev)
753 {
754 return ENA_HASH_KEY_SIZE;
755 }
756
ena_indirection_table_set(struct ena_adapter * adapter,const u32 * indir)757 static int ena_indirection_table_set(struct ena_adapter *adapter,
758 const u32 *indir)
759 {
760 struct ena_com_dev *ena_dev = adapter->ena_dev;
761 int i, rc;
762
763 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
764 rc = ena_com_indirect_table_fill_entry(ena_dev,
765 i,
766 ENA_IO_RXQ_IDX(indir[i]));
767 if (unlikely(rc)) {
768 netif_err(adapter, drv, adapter->netdev,
769 "Cannot fill indirect table (index is too large)\n");
770 return rc;
771 }
772 }
773
774 rc = ena_com_indirect_table_set(ena_dev);
775 if (rc) {
776 netif_err(adapter, drv, adapter->netdev,
777 "Cannot set indirect table\n");
778 return rc == -EPERM ? -EOPNOTSUPP : rc;
779 }
780 return rc;
781 }
782
ena_indirection_table_get(struct ena_adapter * adapter,u32 * indir)783 static int ena_indirection_table_get(struct ena_adapter *adapter, u32 *indir)
784 {
785 struct ena_com_dev *ena_dev = adapter->ena_dev;
786 int i, rc;
787
788 if (!indir)
789 return 0;
790
791 rc = ena_com_indirect_table_get(ena_dev, indir);
792 if (rc)
793 return rc;
794
795 /* Our internal representation of the indices is: even indices
796 * for Tx and uneven indices for Rx. We need to convert the Rx
797 * indices to be consecutive
798 */
799 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++)
800 indir[i] = ENA_IO_RXQ_IDX_TO_COMBINED_IDX(indir[i]);
801
802 return rc;
803 }
804
ena_get_rxfh(struct net_device * netdev,u32 * indir,u8 * key,u8 * hfunc)805 static int ena_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
806 u8 *hfunc)
807 {
808 struct ena_adapter *adapter = netdev_priv(netdev);
809 enum ena_admin_hash_functions ena_func;
810 u8 func;
811 int rc;
812
813 rc = ena_indirection_table_get(adapter, indir);
814 if (rc)
815 return rc;
816
817 /* We call this function in order to check if the device
818 * supports getting/setting the hash function.
819 */
820 rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func);
821 if (rc) {
822 if (rc == -EOPNOTSUPP)
823 rc = 0;
824
825 return rc;
826 }
827
828 rc = ena_com_get_hash_key(adapter->ena_dev, key);
829 if (rc)
830 return rc;
831
832 switch (ena_func) {
833 case ENA_ADMIN_TOEPLITZ:
834 func = ETH_RSS_HASH_TOP;
835 break;
836 case ENA_ADMIN_CRC32:
837 func = ETH_RSS_HASH_CRC32;
838 break;
839 default:
840 netif_err(adapter, drv, netdev,
841 "Command parameter is not supported\n");
842 return -EOPNOTSUPP;
843 }
844
845 if (hfunc)
846 *hfunc = func;
847
848 return 0;
849 }
850
ena_set_rxfh(struct net_device * netdev,const u32 * indir,const u8 * key,const u8 hfunc)851 static int ena_set_rxfh(struct net_device *netdev, const u32 *indir,
852 const u8 *key, const u8 hfunc)
853 {
854 struct ena_adapter *adapter = netdev_priv(netdev);
855 struct ena_com_dev *ena_dev = adapter->ena_dev;
856 enum ena_admin_hash_functions func = 0;
857 int rc;
858
859 if (indir) {
860 rc = ena_indirection_table_set(adapter, indir);
861 if (rc)
862 return rc;
863 }
864
865 switch (hfunc) {
866 case ETH_RSS_HASH_NO_CHANGE:
867 func = ena_com_get_current_hash_function(ena_dev);
868 break;
869 case ETH_RSS_HASH_TOP:
870 func = ENA_ADMIN_TOEPLITZ;
871 break;
872 case ETH_RSS_HASH_CRC32:
873 func = ENA_ADMIN_CRC32;
874 break;
875 default:
876 netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n",
877 hfunc);
878 return -EOPNOTSUPP;
879 }
880
881 if (key || func) {
882 rc = ena_com_fill_hash_function(ena_dev, func, key,
883 ENA_HASH_KEY_SIZE,
884 0xFFFFFFFF);
885 if (unlikely(rc)) {
886 netif_err(adapter, drv, netdev, "Cannot fill key\n");
887 return rc == -EPERM ? -EOPNOTSUPP : rc;
888 }
889 }
890
891 return 0;
892 }
893
ena_get_channels(struct net_device * netdev,struct ethtool_channels * channels)894 static void ena_get_channels(struct net_device *netdev,
895 struct ethtool_channels *channels)
896 {
897 struct ena_adapter *adapter = netdev_priv(netdev);
898
899 channels->max_combined = adapter->max_num_io_queues;
900 channels->combined_count = adapter->num_io_queues;
901 }
902
ena_set_channels(struct net_device * netdev,struct ethtool_channels * channels)903 static int ena_set_channels(struct net_device *netdev,
904 struct ethtool_channels *channels)
905 {
906 struct ena_adapter *adapter = netdev_priv(netdev);
907 u32 count = channels->combined_count;
908 /* The check for max value is already done in ethtool */
909 if (count < ENA_MIN_NUM_IO_QUEUES)
910 return -EINVAL;
911
912 if (!ena_xdp_legal_queue_count(adapter, count)) {
913 if (ena_xdp_present(adapter))
914 return -EINVAL;
915
916 xdp_clear_features_flag(netdev);
917 } else {
918 xdp_set_features_flag(netdev,
919 NETDEV_XDP_ACT_BASIC |
920 NETDEV_XDP_ACT_REDIRECT);
921 }
922
923 return ena_update_queue_count(adapter, count);
924 }
925
ena_get_tunable(struct net_device * netdev,const struct ethtool_tunable * tuna,void * data)926 static int ena_get_tunable(struct net_device *netdev,
927 const struct ethtool_tunable *tuna, void *data)
928 {
929 struct ena_adapter *adapter = netdev_priv(netdev);
930 int ret = 0;
931
932 switch (tuna->id) {
933 case ETHTOOL_RX_COPYBREAK:
934 *(u32 *)data = adapter->rx_copybreak;
935 break;
936 default:
937 ret = -EINVAL;
938 break;
939 }
940
941 return ret;
942 }
943
ena_set_tunable(struct net_device * netdev,const struct ethtool_tunable * tuna,const void * data)944 static int ena_set_tunable(struct net_device *netdev,
945 const struct ethtool_tunable *tuna,
946 const void *data)
947 {
948 struct ena_adapter *adapter = netdev_priv(netdev);
949 int ret = 0;
950 u32 len;
951
952 switch (tuna->id) {
953 case ETHTOOL_RX_COPYBREAK:
954 len = *(u32 *)data;
955 ret = ena_set_rx_copybreak(adapter, len);
956 break;
957 default:
958 ret = -EINVAL;
959 break;
960 }
961
962 return ret;
963 }
964
965 static const struct ethtool_ops ena_ethtool_ops = {
966 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
967 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
968 .supported_ring_params = ETHTOOL_RING_USE_TX_PUSH_BUF_LEN |
969 ETHTOOL_RING_USE_TX_PUSH,
970 .get_link_ksettings = ena_get_link_ksettings,
971 .get_drvinfo = ena_get_drvinfo,
972 .get_msglevel = ena_get_msglevel,
973 .set_msglevel = ena_set_msglevel,
974 .get_link = ethtool_op_get_link,
975 .get_coalesce = ena_get_coalesce,
976 .set_coalesce = ena_set_coalesce,
977 .get_ringparam = ena_get_ringparam,
978 .set_ringparam = ena_set_ringparam,
979 .get_sset_count = ena_get_sset_count,
980 .get_strings = ena_get_ethtool_strings,
981 .get_ethtool_stats = ena_get_ethtool_stats,
982 .get_rxnfc = ena_get_rxnfc,
983 .set_rxnfc = ena_set_rxnfc,
984 .get_rxfh_indir_size = ena_get_rxfh_indir_size,
985 .get_rxfh_key_size = ena_get_rxfh_key_size,
986 .get_rxfh = ena_get_rxfh,
987 .set_rxfh = ena_set_rxfh,
988 .get_channels = ena_get_channels,
989 .set_channels = ena_set_channels,
990 .get_tunable = ena_get_tunable,
991 .set_tunable = ena_set_tunable,
992 .get_ts_info = ethtool_op_get_ts_info,
993 };
994
ena_set_ethtool_ops(struct net_device * netdev)995 void ena_set_ethtool_ops(struct net_device *netdev)
996 {
997 netdev->ethtool_ops = &ena_ethtool_ops;
998 }
999
ena_dump_stats_ex(struct ena_adapter * adapter,u8 * buf)1000 static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
1001 {
1002 struct net_device *netdev = adapter->netdev;
1003 u8 *strings_buf;
1004 u64 *data_buf;
1005 int strings_num;
1006 int i, rc;
1007
1008 strings_num = ena_get_sw_stats_count(adapter);
1009 if (strings_num <= 0) {
1010 netif_err(adapter, drv, netdev, "Can't get stats num\n");
1011 return;
1012 }
1013
1014 strings_buf = devm_kcalloc(&adapter->pdev->dev,
1015 ETH_GSTRING_LEN, strings_num,
1016 GFP_ATOMIC);
1017 if (!strings_buf) {
1018 netif_err(adapter, drv, netdev,
1019 "Failed to allocate strings_buf\n");
1020 return;
1021 }
1022
1023 data_buf = devm_kcalloc(&adapter->pdev->dev,
1024 strings_num, sizeof(u64),
1025 GFP_ATOMIC);
1026 if (!data_buf) {
1027 netif_err(adapter, drv, netdev,
1028 "Failed to allocate data buf\n");
1029 devm_kfree(&adapter->pdev->dev, strings_buf);
1030 return;
1031 }
1032
1033 ena_get_strings(adapter, strings_buf, false);
1034 ena_get_stats(adapter, data_buf, false);
1035
1036 /* If there is a buffer, dump stats, otherwise print them to dmesg */
1037 if (buf)
1038 for (i = 0; i < strings_num; i++) {
1039 rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
1040 "%s %llu\n",
1041 strings_buf + i * ETH_GSTRING_LEN,
1042 data_buf[i]);
1043 buf += rc;
1044 }
1045 else
1046 for (i = 0; i < strings_num; i++)
1047 netif_err(adapter, drv, netdev, "%s: %llu\n",
1048 strings_buf + i * ETH_GSTRING_LEN,
1049 data_buf[i]);
1050
1051 devm_kfree(&adapter->pdev->dev, strings_buf);
1052 devm_kfree(&adapter->pdev->dev, data_buf);
1053 }
1054
ena_dump_stats_to_buf(struct ena_adapter * adapter,u8 * buf)1055 void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)
1056 {
1057 if (!buf)
1058 return;
1059
1060 ena_dump_stats_ex(adapter, buf);
1061 }
1062
ena_dump_stats_to_dmesg(struct ena_adapter * adapter)1063 void ena_dump_stats_to_dmesg(struct ena_adapter *adapter)
1064 {
1065 ena_dump_stats_ex(adapter, NULL);
1066 }
1067
