2 * Copyright 2015 Amazon.com, Inc. or its affiliates.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/pci.h>
35 #include "ena_netdev.h"
38 char name[ETH_GSTRING_LEN];
42 #define ENA_STAT_ENA_COM_ENTRY(stat) { \
44 .stat_offset = offsetof(struct ena_com_stats_admin, stat) \
47 #define ENA_STAT_ENTRY(stat, stat_type) { \
49 .stat_offset = offsetof(struct ena_stats_##stat_type, stat) \
52 #define ENA_STAT_RX_ENTRY(stat) \
53 ENA_STAT_ENTRY(stat, rx)
55 #define ENA_STAT_TX_ENTRY(stat) \
56 ENA_STAT_ENTRY(stat, tx)
58 #define ENA_STAT_GLOBAL_ENTRY(stat) \
59 ENA_STAT_ENTRY(stat, dev)
61 static const struct ena_stats ena_stats_global_strings[] = {
62 ENA_STAT_GLOBAL_ENTRY(tx_timeout),
63 ENA_STAT_GLOBAL_ENTRY(suspend),
64 ENA_STAT_GLOBAL_ENTRY(resume),
65 ENA_STAT_GLOBAL_ENTRY(wd_expired),
66 ENA_STAT_GLOBAL_ENTRY(interface_up),
67 ENA_STAT_GLOBAL_ENTRY(interface_down),
68 ENA_STAT_GLOBAL_ENTRY(admin_q_pause),
71 static const struct ena_stats ena_stats_tx_strings[] = {
72 ENA_STAT_TX_ENTRY(cnt),
73 ENA_STAT_TX_ENTRY(bytes),
74 ENA_STAT_TX_ENTRY(queue_stop),
75 ENA_STAT_TX_ENTRY(queue_wakeup),
76 ENA_STAT_TX_ENTRY(dma_mapping_err),
77 ENA_STAT_TX_ENTRY(linearize),
78 ENA_STAT_TX_ENTRY(linearize_failed),
79 ENA_STAT_TX_ENTRY(napi_comp),
80 ENA_STAT_TX_ENTRY(tx_poll),
81 ENA_STAT_TX_ENTRY(doorbells),
82 ENA_STAT_TX_ENTRY(prepare_ctx_err),
83 ENA_STAT_TX_ENTRY(bad_req_id),
84 ENA_STAT_TX_ENTRY(llq_buffer_copy),
85 ENA_STAT_TX_ENTRY(missed_tx),
88 static const struct ena_stats ena_stats_rx_strings[] = {
89 ENA_STAT_RX_ENTRY(cnt),
90 ENA_STAT_RX_ENTRY(bytes),
91 ENA_STAT_RX_ENTRY(rx_copybreak_pkt),
92 ENA_STAT_RX_ENTRY(csum_good),
93 ENA_STAT_RX_ENTRY(refil_partial),
94 ENA_STAT_RX_ENTRY(bad_csum),
95 ENA_STAT_RX_ENTRY(page_alloc_fail),
96 ENA_STAT_RX_ENTRY(skb_alloc_fail),
97 ENA_STAT_RX_ENTRY(dma_mapping_err),
98 ENA_STAT_RX_ENTRY(bad_desc_num),
99 ENA_STAT_RX_ENTRY(bad_req_id),
100 ENA_STAT_RX_ENTRY(empty_rx_ring),
101 ENA_STAT_RX_ENTRY(csum_unchecked),
104 static const struct ena_stats ena_stats_ena_com_strings[] = {
105 ENA_STAT_ENA_COM_ENTRY(aborted_cmd),
106 ENA_STAT_ENA_COM_ENTRY(submitted_cmd),
107 ENA_STAT_ENA_COM_ENTRY(completed_cmd),
108 ENA_STAT_ENA_COM_ENTRY(out_of_space),
109 ENA_STAT_ENA_COM_ENTRY(no_completion),
112 #define ENA_STATS_ARRAY_GLOBAL ARRAY_SIZE(ena_stats_global_strings)
113 #define ENA_STATS_ARRAY_TX ARRAY_SIZE(ena_stats_tx_strings)
114 #define ENA_STATS_ARRAY_RX ARRAY_SIZE(ena_stats_rx_strings)
115 #define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings)
117 static void ena_safe_update_stat(u64 *src, u64 *dst,
118 struct u64_stats_sync *syncp)
123 start = u64_stats_fetch_begin_irq(syncp);
125 } while (u64_stats_fetch_retry_irq(syncp, start));
128 static void ena_queue_stats(struct ena_adapter *adapter, u64 **data)
130 const struct ena_stats *ena_stats;
131 struct ena_ring *ring;
136 for (i = 0; i < adapter->num_io_queues; i++) {
138 ring = &adapter->tx_ring[i];
140 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
141 ena_stats = &ena_stats_tx_strings[j];
143 ptr = (u64 *)((uintptr_t)&ring->tx_stats +
144 (uintptr_t)ena_stats->stat_offset);
146 ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
150 ring = &adapter->rx_ring[i];
152 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
153 ena_stats = &ena_stats_rx_strings[j];
155 ptr = (u64 *)((uintptr_t)&ring->rx_stats +
156 (uintptr_t)ena_stats->stat_offset);
158 ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
163 static void ena_dev_admin_queue_stats(struct ena_adapter *adapter, u64 **data)
165 const struct ena_stats *ena_stats;
169 for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
170 ena_stats = &ena_stats_ena_com_strings[i];
172 ptr = (u32 *)((uintptr_t)&adapter->ena_dev->admin_queue.stats +
173 (uintptr_t)ena_stats->stat_offset);
179 static void ena_get_ethtool_stats(struct net_device *netdev,
180 struct ethtool_stats *stats,
183 struct ena_adapter *adapter = netdev_priv(netdev);
184 const struct ena_stats *ena_stats;
188 for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
189 ena_stats = &ena_stats_global_strings[i];
191 ptr = (u64 *)((uintptr_t)&adapter->dev_stats +
192 (uintptr_t)ena_stats->stat_offset);
194 ena_safe_update_stat(ptr, data++, &adapter->syncp);
197 ena_queue_stats(adapter, &data);
198 ena_dev_admin_queue_stats(adapter, &data);
201 int ena_get_sset_count(struct net_device *netdev, int sset)
203 struct ena_adapter *adapter = netdev_priv(netdev);
205 if (sset != ETH_SS_STATS)
208 return adapter->num_io_queues * (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX)
209 + ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
212 static void ena_queue_strings(struct ena_adapter *adapter, u8 **data)
214 const struct ena_stats *ena_stats;
217 for (i = 0; i < adapter->num_io_queues; i++) {
219 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
220 ena_stats = &ena_stats_tx_strings[j];
222 snprintf(*data, ETH_GSTRING_LEN,
223 "queue_%u_tx_%s", i, ena_stats->name);
224 (*data) += ETH_GSTRING_LEN;
227 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
228 ena_stats = &ena_stats_rx_strings[j];
230 snprintf(*data, ETH_GSTRING_LEN,
231 "queue_%u_rx_%s", i, ena_stats->name);
232 (*data) += ETH_GSTRING_LEN;
237 static void ena_com_dev_strings(u8 **data)
239 const struct ena_stats *ena_stats;
242 for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
243 ena_stats = &ena_stats_ena_com_strings[i];
245 snprintf(*data, ETH_GSTRING_LEN,
246 "ena_admin_q_%s", ena_stats->name);
247 (*data) += ETH_GSTRING_LEN;
251 static void ena_get_strings(struct net_device *netdev, u32 sset, u8 *data)
253 struct ena_adapter *adapter = netdev_priv(netdev);
254 const struct ena_stats *ena_stats;
257 if (sset != ETH_SS_STATS)
260 for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
261 ena_stats = &ena_stats_global_strings[i];
263 memcpy(data, ena_stats->name, ETH_GSTRING_LEN);
264 data += ETH_GSTRING_LEN;
267 ena_queue_strings(adapter, &data);
268 ena_com_dev_strings(&data);
271 static int ena_get_link_ksettings(struct net_device *netdev,
272 struct ethtool_link_ksettings *link_ksettings)
274 struct ena_adapter *adapter = netdev_priv(netdev);
275 struct ena_com_dev *ena_dev = adapter->ena_dev;
276 struct ena_admin_get_feature_link_desc *link;
277 struct ena_admin_get_feat_resp feat_resp;
280 rc = ena_com_get_link_params(ena_dev, &feat_resp);
284 link = &feat_resp.u.link;
285 link_ksettings->base.speed = link->speed;
287 if (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) {
288 ethtool_link_ksettings_add_link_mode(link_ksettings,
290 ethtool_link_ksettings_add_link_mode(link_ksettings,
294 link_ksettings->base.autoneg =
295 (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) ?
296 AUTONEG_ENABLE : AUTONEG_DISABLE;
298 link_ksettings->base.duplex = DUPLEX_FULL;
303 static int ena_get_coalesce(struct net_device *net_dev,
304 struct ethtool_coalesce *coalesce)
306 struct ena_adapter *adapter = netdev_priv(net_dev);
307 struct ena_com_dev *ena_dev = adapter->ena_dev;
309 if (!ena_com_interrupt_moderation_supported(ena_dev)) {
310 /* the devie doesn't support interrupt moderation */
314 coalesce->tx_coalesce_usecs =
315 ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) *
316 ena_dev->intr_delay_resolution;
318 if (!ena_com_get_adaptive_moderation_enabled(ena_dev))
319 coalesce->rx_coalesce_usecs =
320 ena_com_get_nonadaptive_moderation_interval_rx(ena_dev)
321 * ena_dev->intr_delay_resolution;
323 coalesce->use_adaptive_rx_coalesce =
324 ena_com_get_adaptive_moderation_enabled(ena_dev);
329 static void ena_update_tx_rings_intr_moderation(struct ena_adapter *adapter)
334 val = ena_com_get_nonadaptive_moderation_interval_tx(adapter->ena_dev);
336 for (i = 0; i < adapter->num_io_queues; i++)
337 adapter->tx_ring[i].smoothed_interval = val;
340 static void ena_update_rx_rings_intr_moderation(struct ena_adapter *adapter)
345 val = ena_com_get_nonadaptive_moderation_interval_rx(adapter->ena_dev);
347 for (i = 0; i < adapter->num_io_queues; i++)
348 adapter->rx_ring[i].smoothed_interval = val;
351 static int ena_set_coalesce(struct net_device *net_dev,
352 struct ethtool_coalesce *coalesce)
354 struct ena_adapter *adapter = netdev_priv(net_dev);
355 struct ena_com_dev *ena_dev = adapter->ena_dev;
358 if (!ena_com_interrupt_moderation_supported(ena_dev)) {
359 /* the devie doesn't support interrupt moderation */
363 rc = ena_com_update_nonadaptive_moderation_interval_tx(ena_dev,
364 coalesce->tx_coalesce_usecs);
368 ena_update_tx_rings_intr_moderation(adapter);
370 if (coalesce->use_adaptive_rx_coalesce) {
371 if (!ena_com_get_adaptive_moderation_enabled(ena_dev))
372 ena_com_enable_adaptive_moderation(ena_dev);
376 rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
377 coalesce->rx_coalesce_usecs);
381 ena_update_rx_rings_intr_moderation(adapter);
383 if (!coalesce->use_adaptive_rx_coalesce) {
384 if (ena_com_get_adaptive_moderation_enabled(ena_dev))
385 ena_com_disable_adaptive_moderation(ena_dev);
391 static u32 ena_get_msglevel(struct net_device *netdev)
393 struct ena_adapter *adapter = netdev_priv(netdev);
395 return adapter->msg_enable;
398 static void ena_set_msglevel(struct net_device *netdev, u32 value)
400 struct ena_adapter *adapter = netdev_priv(netdev);
402 adapter->msg_enable = value;
405 static void ena_get_drvinfo(struct net_device *dev,
406 struct ethtool_drvinfo *info)
408 struct ena_adapter *adapter = netdev_priv(dev);
410 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
411 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
412 strlcpy(info->bus_info, pci_name(adapter->pdev),
413 sizeof(info->bus_info));
416 static void ena_get_ringparam(struct net_device *netdev,
417 struct ethtool_ringparam *ring)
419 struct ena_adapter *adapter = netdev_priv(netdev);
421 ring->tx_max_pending = adapter->max_tx_ring_size;
422 ring->rx_max_pending = adapter->max_rx_ring_size;
423 ring->tx_pending = adapter->tx_ring[0].ring_size;
424 ring->rx_pending = adapter->rx_ring[0].ring_size;
427 static int ena_set_ringparam(struct net_device *netdev,
428 struct ethtool_ringparam *ring)
430 struct ena_adapter *adapter = netdev_priv(netdev);
431 u32 new_tx_size, new_rx_size;
433 new_tx_size = ring->tx_pending < ENA_MIN_RING_SIZE ?
434 ENA_MIN_RING_SIZE : ring->tx_pending;
435 new_tx_size = rounddown_pow_of_two(new_tx_size);
437 new_rx_size = ring->rx_pending < ENA_MIN_RING_SIZE ?
438 ENA_MIN_RING_SIZE : ring->rx_pending;
439 new_rx_size = rounddown_pow_of_two(new_rx_size);
441 if (new_tx_size == adapter->requested_tx_ring_size &&
442 new_rx_size == adapter->requested_rx_ring_size)
445 return ena_update_queue_sizes(adapter, new_tx_size, new_rx_size);
448 static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
452 if (hash_fields & ENA_ADMIN_RSS_L2_DA)
455 if (hash_fields & ENA_ADMIN_RSS_L3_DA)
458 if (hash_fields & ENA_ADMIN_RSS_L3_SA)
461 if (hash_fields & ENA_ADMIN_RSS_L4_DP)
462 data |= RXH_L4_B_2_3;
464 if (hash_fields & ENA_ADMIN_RSS_L4_SP)
465 data |= RXH_L4_B_0_1;
470 static u16 ena_flow_data_to_flow_hash(u32 hash_fields)
474 if (hash_fields & RXH_L2DA)
475 data |= ENA_ADMIN_RSS_L2_DA;
477 if (hash_fields & RXH_IP_DST)
478 data |= ENA_ADMIN_RSS_L3_DA;
480 if (hash_fields & RXH_IP_SRC)
481 data |= ENA_ADMIN_RSS_L3_SA;
483 if (hash_fields & RXH_L4_B_2_3)
484 data |= ENA_ADMIN_RSS_L4_DP;
486 if (hash_fields & RXH_L4_B_0_1)
487 data |= ENA_ADMIN_RSS_L4_SP;
492 static int ena_get_rss_hash(struct ena_com_dev *ena_dev,
493 struct ethtool_rxnfc *cmd)
495 enum ena_admin_flow_hash_proto proto;
501 switch (cmd->flow_type) {
503 proto = ENA_ADMIN_RSS_TCP4;
506 proto = ENA_ADMIN_RSS_UDP4;
509 proto = ENA_ADMIN_RSS_TCP6;
512 proto = ENA_ADMIN_RSS_UDP6;
515 proto = ENA_ADMIN_RSS_IP4;
518 proto = ENA_ADMIN_RSS_IP6;
521 proto = ENA_ADMIN_RSS_NOT_IP;
534 rc = ena_com_get_hash_ctrl(ena_dev, proto, &hash_fields);
538 cmd->data = ena_flow_hash_to_flow_type(hash_fields);
543 static int ena_set_rss_hash(struct ena_com_dev *ena_dev,
544 struct ethtool_rxnfc *cmd)
546 enum ena_admin_flow_hash_proto proto;
549 switch (cmd->flow_type) {
551 proto = ENA_ADMIN_RSS_TCP4;
554 proto = ENA_ADMIN_RSS_UDP4;
557 proto = ENA_ADMIN_RSS_TCP6;
560 proto = ENA_ADMIN_RSS_UDP6;
563 proto = ENA_ADMIN_RSS_IP4;
566 proto = ENA_ADMIN_RSS_IP6;
569 proto = ENA_ADMIN_RSS_NOT_IP;
582 hash_fields = ena_flow_data_to_flow_hash(cmd->data);
584 return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields);
587 static int ena_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
589 struct ena_adapter *adapter = netdev_priv(netdev);
594 rc = ena_set_rss_hash(adapter->ena_dev, info);
596 case ETHTOOL_SRXCLSRLDEL:
597 case ETHTOOL_SRXCLSRLINS:
599 netif_err(adapter, drv, netdev,
600 "Command parameter %d is not supported\n", info->cmd);
607 static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
610 struct ena_adapter *adapter = netdev_priv(netdev);
614 case ETHTOOL_GRXRINGS:
615 info->data = adapter->num_io_queues;
619 rc = ena_get_rss_hash(adapter->ena_dev, info);
621 case ETHTOOL_GRXCLSRLCNT:
622 case ETHTOOL_GRXCLSRULE:
623 case ETHTOOL_GRXCLSRLALL:
625 netif_err(adapter, drv, netdev,
626 "Command parameter %d is not supported\n", info->cmd);
633 static u32 ena_get_rxfh_indir_size(struct net_device *netdev)
635 return ENA_RX_RSS_TABLE_SIZE;
638 static u32 ena_get_rxfh_key_size(struct net_device *netdev)
640 return ENA_HASH_KEY_SIZE;
643 static int ena_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
646 struct ena_adapter *adapter = netdev_priv(netdev);
647 enum ena_admin_hash_functions ena_func;
651 rc = ena_com_indirect_table_get(adapter->ena_dev, indir);
655 rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func, key);
660 case ENA_ADMIN_TOEPLITZ:
661 func = ETH_RSS_HASH_TOP;
663 case ENA_ADMIN_CRC32:
664 func = ETH_RSS_HASH_XOR;
667 netif_err(adapter, drv, netdev,
668 "Command parameter is not supported\n");
678 static int ena_set_rxfh(struct net_device *netdev, const u32 *indir,
679 const u8 *key, const u8 hfunc)
681 struct ena_adapter *adapter = netdev_priv(netdev);
682 struct ena_com_dev *ena_dev = adapter->ena_dev;
683 enum ena_admin_hash_functions func;
687 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
688 rc = ena_com_indirect_table_fill_entry(ena_dev,
690 ENA_IO_RXQ_IDX(indir[i]));
692 netif_err(adapter, drv, netdev,
693 "Cannot fill indirect table (index is too large)\n");
698 rc = ena_com_indirect_table_set(ena_dev);
700 netif_err(adapter, drv, netdev,
701 "Cannot set indirect table\n");
702 return rc == -EPERM ? -EOPNOTSUPP : rc;
707 case ETH_RSS_HASH_TOP:
708 func = ENA_ADMIN_TOEPLITZ;
710 case ETH_RSS_HASH_XOR:
711 func = ENA_ADMIN_CRC32;
714 netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n",
720 rc = ena_com_fill_hash_function(ena_dev, func, key,
724 netif_err(adapter, drv, netdev, "Cannot fill key\n");
725 return rc == -EPERM ? -EOPNOTSUPP : rc;
732 static void ena_get_channels(struct net_device *netdev,
733 struct ethtool_channels *channels)
735 struct ena_adapter *adapter = netdev_priv(netdev);
737 channels->max_combined = adapter->max_num_io_queues;
738 channels->combined_count = adapter->num_io_queues;
741 static int ena_set_channels(struct net_device *netdev,
742 struct ethtool_channels *channels)
744 struct ena_adapter *adapter = netdev_priv(netdev);
745 u32 count = channels->combined_count;
746 /* The check for max value is already done in ethtool */
747 if (count < ENA_MIN_NUM_IO_QUEUES)
750 return ena_update_queue_count(adapter, count);
753 static int ena_get_tunable(struct net_device *netdev,
754 const struct ethtool_tunable *tuna, void *data)
756 struct ena_adapter *adapter = netdev_priv(netdev);
760 case ETHTOOL_RX_COPYBREAK:
761 *(u32 *)data = adapter->rx_copybreak;
771 static int ena_set_tunable(struct net_device *netdev,
772 const struct ethtool_tunable *tuna,
775 struct ena_adapter *adapter = netdev_priv(netdev);
780 case ETHTOOL_RX_COPYBREAK:
782 if (len > adapter->netdev->mtu) {
786 adapter->rx_copybreak = len;
796 static const struct ethtool_ops ena_ethtool_ops = {
797 .get_link_ksettings = ena_get_link_ksettings,
798 .get_drvinfo = ena_get_drvinfo,
799 .get_msglevel = ena_get_msglevel,
800 .set_msglevel = ena_set_msglevel,
801 .get_link = ethtool_op_get_link,
802 .get_coalesce = ena_get_coalesce,
803 .set_coalesce = ena_set_coalesce,
804 .get_ringparam = ena_get_ringparam,
805 .set_ringparam = ena_set_ringparam,
806 .get_sset_count = ena_get_sset_count,
807 .get_strings = ena_get_strings,
808 .get_ethtool_stats = ena_get_ethtool_stats,
809 .get_rxnfc = ena_get_rxnfc,
810 .set_rxnfc = ena_set_rxnfc,
811 .get_rxfh_indir_size = ena_get_rxfh_indir_size,
812 .get_rxfh_key_size = ena_get_rxfh_key_size,
813 .get_rxfh = ena_get_rxfh,
814 .set_rxfh = ena_set_rxfh,
815 .get_channels = ena_get_channels,
816 .set_channels = ena_set_channels,
817 .get_tunable = ena_get_tunable,
818 .set_tunable = ena_set_tunable,
821 void ena_set_ethtool_ops(struct net_device *netdev)
823 netdev->ethtool_ops = &ena_ethtool_ops;
826 static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
828 struct net_device *netdev = adapter->netdev;
834 strings_num = ena_get_sset_count(netdev, ETH_SS_STATS);
835 if (strings_num <= 0) {
836 netif_err(adapter, drv, netdev, "Can't get stats num\n");
840 strings_buf = devm_kcalloc(&adapter->pdev->dev,
841 ETH_GSTRING_LEN, strings_num,
844 netif_err(adapter, drv, netdev,
845 "failed to alloc strings_buf\n");
849 data_buf = devm_kcalloc(&adapter->pdev->dev,
850 strings_num, sizeof(u64),
853 netif_err(adapter, drv, netdev,
854 "failed to allocate data buf\n");
855 devm_kfree(&adapter->pdev->dev, strings_buf);
859 ena_get_strings(netdev, ETH_SS_STATS, strings_buf);
860 ena_get_ethtool_stats(netdev, NULL, data_buf);
862 /* If there is a buffer, dump stats, otherwise print them to dmesg */
864 for (i = 0; i < strings_num; i++) {
865 rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
867 strings_buf + i * ETH_GSTRING_LEN,
872 for (i = 0; i < strings_num; i++)
873 netif_err(adapter, drv, netdev, "%s: %llu\n",
874 strings_buf + i * ETH_GSTRING_LEN,
877 devm_kfree(&adapter->pdev->dev, strings_buf);
878 devm_kfree(&adapter->pdev->dev, data_buf);
881 void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)
886 ena_dump_stats_ex(adapter, buf);
889 void ena_dump_stats_to_dmesg(struct ena_adapter *adapter)
891 ena_dump_stats_ex(adapter, NULL);