drivers/net/ethernet/amazon/ena/ena_ethtool.c

   1 /*
   2  * Copyright 2015 Amazon.com, Inc. or its affiliates.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/pci.h>
  34
  35 #include "ena_netdev.h"
  36
  37 struct ena_stats {
  38         char name[ETH_GSTRING_LEN];
  39         int stat_offset;
  40 };
  41
  42 #define ENA_STAT_ENA_COM_ENTRY(stat) { \
  43         .name = #stat, \
  44         .stat_offset = offsetof(struct ena_com_stats_admin, stat) \
  45 }
  46
  47 #define ENA_STAT_ENTRY(stat, stat_type) { \
  48         .name = #stat, \
  49         .stat_offset = offsetof(struct ena_stats_##stat_type, stat) \
  50 }
  51
  52 #define ENA_STAT_RX_ENTRY(stat) \
  53         ENA_STAT_ENTRY(stat, rx)
  54
  55 #define ENA_STAT_TX_ENTRY(stat) \
  56         ENA_STAT_ENTRY(stat, tx)
  57
  58 #define ENA_STAT_GLOBAL_ENTRY(stat) \
  59         ENA_STAT_ENTRY(stat, dev)
  60
  61 static const struct ena_stats ena_stats_global_strings[] = {
  62         ENA_STAT_GLOBAL_ENTRY(tx_timeout),
  63         ENA_STAT_GLOBAL_ENTRY(io_suspend),
  64         ENA_STAT_GLOBAL_ENTRY(io_resume),
  65         ENA_STAT_GLOBAL_ENTRY(wd_expired),
  66         ENA_STAT_GLOBAL_ENTRY(interface_up),
  67         ENA_STAT_GLOBAL_ENTRY(interface_down),
  68         ENA_STAT_GLOBAL_ENTRY(admin_q_pause),
  69 };
  70
  71 static const struct ena_stats ena_stats_tx_strings[] = {
  72         ENA_STAT_TX_ENTRY(cnt),
  73         ENA_STAT_TX_ENTRY(bytes),
  74         ENA_STAT_TX_ENTRY(queue_stop),
  75         ENA_STAT_TX_ENTRY(queue_wakeup),
  76         ENA_STAT_TX_ENTRY(dma_mapping_err),
  77         ENA_STAT_TX_ENTRY(linearize),
  78         ENA_STAT_TX_ENTRY(linearize_failed),
  79         ENA_STAT_TX_ENTRY(napi_comp),
  80         ENA_STAT_TX_ENTRY(tx_poll),
  81         ENA_STAT_TX_ENTRY(doorbells),
  82         ENA_STAT_TX_ENTRY(prepare_ctx_err),
  83         ENA_STAT_TX_ENTRY(missing_tx_comp),
  84         ENA_STAT_TX_ENTRY(bad_req_id),
  85 };
  86
  87 static const struct ena_stats ena_stats_rx_strings[] = {
  88         ENA_STAT_RX_ENTRY(cnt),
  89         ENA_STAT_RX_ENTRY(bytes),
  90         ENA_STAT_RX_ENTRY(refil_partial),
  91         ENA_STAT_RX_ENTRY(bad_csum),
  92         ENA_STAT_RX_ENTRY(page_alloc_fail),
  93         ENA_STAT_RX_ENTRY(skb_alloc_fail),
  94         ENA_STAT_RX_ENTRY(dma_mapping_err),
  95         ENA_STAT_RX_ENTRY(bad_desc_num),
  96         ENA_STAT_RX_ENTRY(rx_copybreak_pkt),
  97 };
  98
  99 static const struct ena_stats ena_stats_ena_com_strings[] = {
 100         ENA_STAT_ENA_COM_ENTRY(aborted_cmd),
 101         ENA_STAT_ENA_COM_ENTRY(submitted_cmd),
 102         ENA_STAT_ENA_COM_ENTRY(completed_cmd),
 103         ENA_STAT_ENA_COM_ENTRY(out_of_space),
 104         ENA_STAT_ENA_COM_ENTRY(no_completion),
 105 };
 106
 107 #define ENA_STATS_ARRAY_GLOBAL  ARRAY_SIZE(ena_stats_global_strings)
 108 #define ENA_STATS_ARRAY_TX      ARRAY_SIZE(ena_stats_tx_strings)
 109 #define ENA_STATS_ARRAY_RX      ARRAY_SIZE(ena_stats_rx_strings)
 110 #define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings)
 111
 112 static void ena_safe_update_stat(u64 *src, u64 *dst,
 113                                  struct u64_stats_sync *syncp)
 114 {
 115         unsigned int start;
 116
 117         do {
 118                 start = u64_stats_fetch_begin_irq(syncp);
 119                 *(dst) = *src;
 120         } while (u64_stats_fetch_retry_irq(syncp, start));
 121 }
 122
 123 static void ena_queue_stats(struct ena_adapter *adapter, u64 **data)
 124 {
 125         const struct ena_stats *ena_stats;
 126         struct ena_ring *ring;
 127
 128         u64 *ptr;
 129         int i, j;
 130
 131         for (i = 0; i < adapter->num_queues; i++) {
 132                 /* Tx stats */
 133                 ring = &adapter->tx_ring[i];
 134
 135                 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
 136                         ena_stats = &ena_stats_tx_strings[j];
 137
 138                         ptr = (u64 *)((uintptr_t)&ring->tx_stats +
 139                                 (uintptr_t)ena_stats->stat_offset);
 140
 141                         ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
 142                 }
 143
 144                 /* Rx stats */
 145                 ring = &adapter->rx_ring[i];
 146
 147                 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
 148                         ena_stats = &ena_stats_rx_strings[j];
 149
 150                         ptr = (u64 *)((uintptr_t)&ring->rx_stats +
 151                                 (uintptr_t)ena_stats->stat_offset);
 152
 153                         ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
 154                 }
 155         }
 156 }
 157
 158 static void ena_dev_admin_queue_stats(struct ena_adapter *adapter, u64 **data)
 159 {
 160         const struct ena_stats *ena_stats;
 161         u32 *ptr;
 162         int i;
 163
 164         for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
 165                 ena_stats = &ena_stats_ena_com_strings[i];
 166
 167                 ptr = (u32 *)((uintptr_t)&adapter->ena_dev->admin_queue.stats +
 168                         (uintptr_t)ena_stats->stat_offset);
 169
 170                 *(*data)++ = *ptr;
 171         }
 172 }
 173
 174 static void ena_get_ethtool_stats(struct net_device *netdev,
 175                                   struct ethtool_stats *stats,
 176                                   u64 *data)
 177 {
 178         struct ena_adapter *adapter = netdev_priv(netdev);
 179         const struct ena_stats *ena_stats;
 180         u64 *ptr;
 181         int i;
 182
 183         for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
 184                 ena_stats = &ena_stats_global_strings[i];
 185
 186                 ptr = (u64 *)((uintptr_t)&adapter->dev_stats +
 187                         (uintptr_t)ena_stats->stat_offset);
 188
 189                 ena_safe_update_stat(ptr, data++, &adapter->syncp);
 190         }
 191
 192         ena_queue_stats(adapter, &data);
 193         ena_dev_admin_queue_stats(adapter, &data);
 194 }
 195
 196 int ena_get_sset_count(struct net_device *netdev, int sset)
 197 {
 198         struct ena_adapter *adapter = netdev_priv(netdev);
 199
 200         if (sset != ETH_SS_STATS)
 201                 return -EOPNOTSUPP;
 202
 203         return  adapter->num_queues * (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX)
 204                 + ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
 205 }
 206
 207 static void ena_queue_strings(struct ena_adapter *adapter, u8 **data)
 208 {
 209         const struct ena_stats *ena_stats;
 210         int i, j;
 211
 212         for (i = 0; i < adapter->num_queues; i++) {
 213                 /* Tx stats */
 214                 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
 215                         ena_stats = &ena_stats_tx_strings[j];
 216
 217                         snprintf(*data, ETH_GSTRING_LEN,
 218                                  "queue_%u_tx_%s", i, ena_stats->name);
 219                          (*data) += ETH_GSTRING_LEN;
 220                 }
 221                 /* Rx stats */
 222                 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
 223                         ena_stats = &ena_stats_rx_strings[j];
 224
 225                         snprintf(*data, ETH_GSTRING_LEN,
 226                                  "queue_%u_rx_%s", i, ena_stats->name);
 227                         (*data) += ETH_GSTRING_LEN;
 228                 }
 229         }
 230 }
 231
 232 static void ena_com_dev_strings(u8 **data)
 233 {
 234         const struct ena_stats *ena_stats;
 235         int i;
 236
 237         for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
 238                 ena_stats = &ena_stats_ena_com_strings[i];
 239
 240                 snprintf(*data, ETH_GSTRING_LEN,
 241                          "ena_admin_q_%s", ena_stats->name);
 242                 (*data) += ETH_GSTRING_LEN;
 243         }
 244 }
 245
 246 static void ena_get_strings(struct net_device *netdev, u32 sset, u8 *data)
 247 {
 248         struct ena_adapter *adapter = netdev_priv(netdev);
 249         const struct ena_stats *ena_stats;
 250         int i;
 251
 252         if (sset != ETH_SS_STATS)
 253                 return;
 254
 255         for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
 256                 ena_stats = &ena_stats_global_strings[i];
 257
 258                 memcpy(data, ena_stats->name, ETH_GSTRING_LEN);
 259                 data += ETH_GSTRING_LEN;
 260         }
 261
 262         ena_queue_strings(adapter, &data);
 263         ena_com_dev_strings(&data);
 264 }
 265
 266 static int ena_get_link_ksettings(struct net_device *netdev,
 267                                   struct ethtool_link_ksettings *link_ksettings)
 268 {
 269         struct ena_adapter *adapter = netdev_priv(netdev);
 270         struct ena_com_dev *ena_dev = adapter->ena_dev;
 271         struct ena_admin_get_feature_link_desc *link;
 272         struct ena_admin_get_feat_resp feat_resp;
 273         int rc;
 274
 275         rc = ena_com_get_link_params(ena_dev, &feat_resp);
 276         if (rc)
 277                 return rc;
 278
 279         link = &feat_resp.u.link;
 280         link_ksettings->base.speed = link->speed;
 281
 282         if (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) {
 283                 ethtool_link_ksettings_add_link_mode(link_ksettings,
 284                                                      supported, Autoneg);
 285                 ethtool_link_ksettings_add_link_mode(link_ksettings,
 286                                                      supported, Autoneg);
 287         }
 288
 289         link_ksettings->base.autoneg =
 290                 (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) ?
 291                 AUTONEG_ENABLE : AUTONEG_DISABLE;
 292
 293         link_ksettings->base.duplex = DUPLEX_FULL;
 294
 295         return 0;
 296 }
 297
 298 static int ena_get_coalesce(struct net_device *net_dev,
 299                             struct ethtool_coalesce *coalesce)
 300 {
 301         struct ena_adapter *adapter = netdev_priv(net_dev);
 302         struct ena_com_dev *ena_dev = adapter->ena_dev;
 303         struct ena_intr_moder_entry intr_moder_entry;
 304
 305         if (!ena_com_interrupt_moderation_supported(ena_dev)) {
 306                 /* the devie doesn't support interrupt moderation */
 307                 return -EOPNOTSUPP;
 308         }
 309         coalesce->tx_coalesce_usecs =
 310                 ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) /
 311                         ena_dev->intr_delay_resolution;
 312         if (!ena_com_get_adaptive_moderation_enabled(ena_dev)) {
 313                 coalesce->rx_coalesce_usecs =
 314                         ena_com_get_nonadaptive_moderation_interval_rx(ena_dev)
 315                         / ena_dev->intr_delay_resolution;
 316         } else {
 317                 ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_LOWEST, &intr_moder_entry);
 318                 coalesce->rx_coalesce_usecs_low = intr_moder_entry.intr_moder_interval;
 319                 coalesce->rx_max_coalesced_frames_low = intr_moder_entry.pkts_per_interval;
 320
 321                 ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_MID, &intr_moder_entry);
 322                 coalesce->rx_coalesce_usecs = intr_moder_entry.intr_moder_interval;
 323                 coalesce->rx_max_coalesced_frames = intr_moder_entry.pkts_per_interval;
 324
 325                 ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_HIGHEST, &intr_moder_entry);
 326                 coalesce->rx_coalesce_usecs_high = intr_moder_entry.intr_moder_interval;
 327                 coalesce->rx_max_coalesced_frames_high = intr_moder_entry.pkts_per_interval;
 328         }
 329         coalesce->use_adaptive_rx_coalesce =
 330                 ena_com_get_adaptive_moderation_enabled(ena_dev);
 331
 332         return 0;
 333 }
 334
 335 static void ena_update_tx_rings_intr_moderation(struct ena_adapter *adapter)
 336 {
 337         unsigned int val;
 338         int i;
 339
 340         val = ena_com_get_nonadaptive_moderation_interval_tx(adapter->ena_dev);
 341
 342         for (i = 0; i < adapter->num_queues; i++)
 343                 adapter->tx_ring[i].smoothed_interval = val;
 344 }
 345
 346 static int ena_set_coalesce(struct net_device *net_dev,
 347                             struct ethtool_coalesce *coalesce)
 348 {
 349         struct ena_adapter *adapter = netdev_priv(net_dev);
 350         struct ena_com_dev *ena_dev = adapter->ena_dev;
 351         struct ena_intr_moder_entry intr_moder_entry;
 352         int rc;
 353
 354         if (!ena_com_interrupt_moderation_supported(ena_dev)) {
 355                 /* the devie doesn't support interrupt moderation */
 356                 return -EOPNOTSUPP;
 357         }
 358
 359         if (coalesce->rx_coalesce_usecs_irq ||
 360             coalesce->rx_max_coalesced_frames_irq ||
 361             coalesce->tx_coalesce_usecs_irq ||
 362             coalesce->tx_max_coalesced_frames ||
 363             coalesce->tx_max_coalesced_frames_irq ||
 364             coalesce->stats_block_coalesce_usecs ||
 365             coalesce->use_adaptive_tx_coalesce ||
 366             coalesce->pkt_rate_low ||
 367             coalesce->tx_coalesce_usecs_low ||
 368             coalesce->tx_max_coalesced_frames_low ||
 369             coalesce->pkt_rate_high ||
 370             coalesce->tx_coalesce_usecs_high ||
 371             coalesce->tx_max_coalesced_frames_high ||
 372             coalesce->rate_sample_interval)
 373                 return -EINVAL;
 374
 375         rc = ena_com_update_nonadaptive_moderation_interval_tx(ena_dev,
 376                                                                coalesce->tx_coalesce_usecs);
 377         if (rc)
 378                 return rc;
 379
 380         ena_update_tx_rings_intr_moderation(adapter);
 381
 382         if (ena_com_get_adaptive_moderation_enabled(ena_dev)) {
 383                 if (!coalesce->use_adaptive_rx_coalesce) {
 384                         ena_com_disable_adaptive_moderation(ena_dev);
 385                         rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
 386                                                                                coalesce->rx_coalesce_usecs);
 387                         return rc;
 388                 }
 389         } else { /* was in non-adaptive mode */
 390                 if (coalesce->use_adaptive_rx_coalesce) {
 391                         ena_com_enable_adaptive_moderation(ena_dev);
 392                 } else {
 393                         rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
 394                                                                                coalesce->rx_coalesce_usecs);
 395                         return rc;
 396                 }
 397         }
 398
 399         intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs_low;
 400         intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames_low;
 401         intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED;
 402         ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_LOWEST, &intr_moder_entry);
 403
 404         intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs;
 405         intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames;
 406         intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED;
 407         ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_MID, &intr_moder_entry);
 408
 409         intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs_high;
 410         intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames_high;
 411         intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED;
 412         ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_HIGHEST, &intr_moder_entry);
 413
 414         return 0;
 415 }
 416
 417 static u32 ena_get_msglevel(struct net_device *netdev)
 418 {
 419         struct ena_adapter *adapter = netdev_priv(netdev);
 420
 421         return adapter->msg_enable;
 422 }
 423
 424 static void ena_set_msglevel(struct net_device *netdev, u32 value)
 425 {
 426         struct ena_adapter *adapter = netdev_priv(netdev);
 427
 428         adapter->msg_enable = value;
 429 }
 430
 431 static void ena_get_drvinfo(struct net_device *dev,
 432                             struct ethtool_drvinfo *info)
 433 {
 434         struct ena_adapter *adapter = netdev_priv(dev);
 435
 436         strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
 437         strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
 438         strlcpy(info->bus_info, pci_name(adapter->pdev),
 439                 sizeof(info->bus_info));
 440 }
 441
 442 static void ena_get_ringparam(struct net_device *netdev,
 443                               struct ethtool_ringparam *ring)
 444 {
 445         struct ena_adapter *adapter = netdev_priv(netdev);
 446         struct ena_ring *tx_ring = &adapter->tx_ring[0];
 447         struct ena_ring *rx_ring = &adapter->rx_ring[0];
 448
 449         ring->rx_max_pending = rx_ring->ring_size;
 450         ring->tx_max_pending = tx_ring->ring_size;
 451         ring->rx_pending = rx_ring->ring_size;
 452         ring->tx_pending = tx_ring->ring_size;
 453 }
 454
 455 static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
 456 {
 457         u32 data = 0;
 458
 459         if (hash_fields & ENA_ADMIN_RSS_L2_DA)
 460                 data |= RXH_L2DA;
 461
 462         if (hash_fields & ENA_ADMIN_RSS_L3_DA)
 463                 data |= RXH_IP_DST;
 464
 465         if (hash_fields & ENA_ADMIN_RSS_L3_SA)
 466                 data |= RXH_IP_SRC;
 467
 468         if (hash_fields & ENA_ADMIN_RSS_L4_DP)
 469                 data |= RXH_L4_B_2_3;
 470
 471         if (hash_fields & ENA_ADMIN_RSS_L4_SP)
 472                 data |= RXH_L4_B_0_1;
 473
 474         return data;
 475 }
 476
 477 static u16 ena_flow_data_to_flow_hash(u32 hash_fields)
 478 {
 479         u16 data = 0;
 480
 481         if (hash_fields & RXH_L2DA)
 482                 data |= ENA_ADMIN_RSS_L2_DA;
 483
 484         if (hash_fields & RXH_IP_DST)
 485                 data |= ENA_ADMIN_RSS_L3_DA;
 486
 487         if (hash_fields & RXH_IP_SRC)
 488                 data |= ENA_ADMIN_RSS_L3_SA;
 489
 490         if (hash_fields & RXH_L4_B_2_3)
 491                 data |= ENA_ADMIN_RSS_L4_DP;
 492
 493         if (hash_fields & RXH_L4_B_0_1)
 494                 data |= ENA_ADMIN_RSS_L4_SP;
 495
 496         return data;
 497 }
 498
 499 static int ena_get_rss_hash(struct ena_com_dev *ena_dev,
 500                             struct ethtool_rxnfc *cmd)
 501 {
 502         enum ena_admin_flow_hash_proto proto;
 503         u16 hash_fields;
 504         int rc;
 505
 506         cmd->data = 0;
 507
 508         switch (cmd->flow_type) {
 509         case TCP_V4_FLOW:
 510                 proto = ENA_ADMIN_RSS_TCP4;
 511                 break;
 512         case UDP_V4_FLOW:
 513                 proto = ENA_ADMIN_RSS_UDP4;
 514                 break;
 515         case TCP_V6_FLOW:
 516                 proto = ENA_ADMIN_RSS_TCP6;
 517                 break;
 518         case UDP_V6_FLOW:
 519                 proto = ENA_ADMIN_RSS_UDP6;
 520                 break;
 521         case IPV4_FLOW:
 522                 proto = ENA_ADMIN_RSS_IP4;
 523                 break;
 524         case IPV6_FLOW:
 525                 proto = ENA_ADMIN_RSS_IP6;
 526                 break;
 527         case ETHER_FLOW:
 528                 proto = ENA_ADMIN_RSS_NOT_IP;
 529                 break;
 530         case AH_V4_FLOW:
 531         case ESP_V4_FLOW:
 532         case AH_V6_FLOW:
 533         case ESP_V6_FLOW:
 534         case SCTP_V4_FLOW:
 535         case AH_ESP_V4_FLOW:
 536                 return -EOPNOTSUPP;
 537         default:
 538                 return -EINVAL;
 539         }
 540
 541         rc = ena_com_get_hash_ctrl(ena_dev, proto, &hash_fields);
 542         if (rc) {
 543                 /* If device don't have permission, return unsupported */
 544                 if (rc == -EPERM)
 545                         rc = -EOPNOTSUPP;
 546                 return rc;
 547         }
 548
 549         cmd->data = ena_flow_hash_to_flow_type(hash_fields);
 550
 551         return 0;
 552 }
 553
 554 static int ena_set_rss_hash(struct ena_com_dev *ena_dev,
 555                             struct ethtool_rxnfc *cmd)
 556 {
 557         enum ena_admin_flow_hash_proto proto;
 558         u16 hash_fields;
 559
 560         switch (cmd->flow_type) {
 561         case TCP_V4_FLOW:
 562                 proto = ENA_ADMIN_RSS_TCP4;
 563                 break;
 564         case UDP_V4_FLOW:
 565                 proto = ENA_ADMIN_RSS_UDP4;
 566                 break;
 567         case TCP_V6_FLOW:
 568                 proto = ENA_ADMIN_RSS_TCP6;
 569                 break;
 570         case UDP_V6_FLOW:
 571                 proto = ENA_ADMIN_RSS_UDP6;
 572                 break;
 573         case IPV4_FLOW:
 574                 proto = ENA_ADMIN_RSS_IP4;
 575                 break;
 576         case IPV6_FLOW:
 577                 proto = ENA_ADMIN_RSS_IP6;
 578                 break;
 579         case ETHER_FLOW:
 580                 proto = ENA_ADMIN_RSS_NOT_IP;
 581                 break;
 582         case AH_V4_FLOW:
 583         case ESP_V4_FLOW:
 584         case AH_V6_FLOW:
 585         case ESP_V6_FLOW:
 586         case SCTP_V4_FLOW:
 587         case AH_ESP_V4_FLOW:
 588                 return -EOPNOTSUPP;
 589         default:
 590                 return -EINVAL;
 591         }
 592
 593         hash_fields = ena_flow_data_to_flow_hash(cmd->data);
 594
 595         return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields);
 596 }
 597
 598 static int ena_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
 599 {
 600         struct ena_adapter *adapter = netdev_priv(netdev);
 601         int rc = 0;
 602
 603         switch (info->cmd) {
 604         case ETHTOOL_SRXFH:
 605                 rc = ena_set_rss_hash(adapter->ena_dev, info);
 606                 break;
 607         case ETHTOOL_SRXCLSRLDEL:
 608         case ETHTOOL_SRXCLSRLINS:
 609         default:
 610                 netif_err(adapter, drv, netdev,
 611                           "Command parameter %d is not supported\n", info->cmd);
 612                 rc = -EOPNOTSUPP;
 613         }
 614
 615         return (rc == -EPERM) ? -EOPNOTSUPP : rc;
 616 }
 617
 618 static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
 619                          u32 *rules)
 620 {
 621         struct ena_adapter *adapter = netdev_priv(netdev);
 622         int rc = 0;
 623
 624         switch (info->cmd) {
 625         case ETHTOOL_GRXRINGS:
 626                 info->data = adapter->num_queues;
 627                 rc = 0;
 628                 break;
 629         case ETHTOOL_GRXFH:
 630                 rc = ena_get_rss_hash(adapter->ena_dev, info);
 631                 break;
 632         case ETHTOOL_GRXCLSRLCNT:
 633         case ETHTOOL_GRXCLSRULE:
 634         case ETHTOOL_GRXCLSRLALL:
 635         default:
 636                 netif_err(adapter, drv, netdev,
 637                           "Command parameter %d is not supported\n", info->cmd);
 638                 rc = -EOPNOTSUPP;
 639         }
 640
 641         return (rc == -EPERM) ? -EOPNOTSUPP : rc;
 642 }
 643
 644 static u32 ena_get_rxfh_indir_size(struct net_device *netdev)
 645 {
 646         return ENA_RX_RSS_TABLE_SIZE;
 647 }
 648
 649 static u32 ena_get_rxfh_key_size(struct net_device *netdev)
 650 {
 651         return ENA_HASH_KEY_SIZE;
 652 }
 653
 654 static int ena_indirection_table_get(struct ena_adapter *adapter, u32 *indir)
 655 {
 656         struct ena_com_dev *ena_dev = adapter->ena_dev;
 657         int i, rc;
 658
 659         if (!indir)
 660                 return 0;
 661
 662         rc = ena_com_indirect_table_get(ena_dev, indir);
 663         if (rc)
 664                 return rc;
 665
 666         /* Our internal representation of the indices is: even indices
 667          * for Tx and uneven indices for Rx. We need to convert the Rx
 668          * indices to be consecutive
 669          */
 670         for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++)
 671                 indir[i] = ENA_IO_RXQ_IDX_TO_COMBINED_IDX(indir[i]);
 672
 673         return rc;
 674 }
 675
 676 static int ena_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
 677                         u8 *hfunc)
 678 {
 679         struct ena_adapter *adapter = netdev_priv(netdev);
 680         enum ena_admin_hash_functions ena_func;
 681         u8 func;
 682         int rc;
 683
 684         rc = ena_indirection_table_get(adapter, indir);
 685         if (rc)
 686                 return rc;
 687
 688         /* We call this function in order to check if the device
 689          * supports getting/setting the hash function.
 690          */
 691         rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func, key);
 692
 693         if (rc) {
 694                 if (rc == -EOPNOTSUPP) {
 695                         key = NULL;
 696                         hfunc = NULL;
 697                         rc = 0;
 698                 }
 699
 700                 return rc;
 701         }
 702
 703         if (rc)
 704                 return rc;
 705
 706         switch (ena_func) {
 707         case ENA_ADMIN_TOEPLITZ:
 708                 func = ETH_RSS_HASH_TOP;
 709                 break;
 710         case ENA_ADMIN_CRC32:
 711                 func = ETH_RSS_HASH_XOR;
 712                 break;
 713         default:
 714                 netif_err(adapter, drv, netdev,
 715                           "Command parameter is not supported\n");
 716                 return -EOPNOTSUPP;
 717         }
 718
 719         if (hfunc)
 720                 *hfunc = func;
 721
 722         return rc;
 723 }
 724
 725 static int ena_set_rxfh(struct net_device *netdev, const u32 *indir,
 726                         const u8 *key, const u8 hfunc)
 727 {
 728         struct ena_adapter *adapter = netdev_priv(netdev);
 729         struct ena_com_dev *ena_dev = adapter->ena_dev;
 730         enum ena_admin_hash_functions func;
 731         int rc, i;
 732
 733         if (indir) {
 734                 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
 735                         rc = ena_com_indirect_table_fill_entry(ena_dev,
 736                                                                i,
 737                                                                ENA_IO_RXQ_IDX(indir[i]));
 738                         if (unlikely(rc)) {
 739                                 netif_err(adapter, drv, netdev,
 740                                           "Cannot fill indirect table (index is too large)\n");
 741                                 return rc;
 742                         }
 743                 }
 744
 745                 rc = ena_com_indirect_table_set(ena_dev);
 746                 if (rc) {
 747                         netif_err(adapter, drv, netdev,
 748                                   "Cannot set indirect table\n");
 749                         return rc == -EPERM ? -EOPNOTSUPP : rc;
 750                 }
 751         }
 752
 753         switch (hfunc) {
 754         case ETH_RSS_HASH_NO_CHANGE:
 755                 func = ena_com_get_current_hash_function(ena_dev);
 756                 break;
 757         case ETH_RSS_HASH_TOP:
 758                 func = ENA_ADMIN_TOEPLITZ;
 759                 break;
 760         case ETH_RSS_HASH_XOR:
 761                 func = ENA_ADMIN_CRC32;
 762                 break;
 763         default:
 764                 netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n",
 765                           hfunc);
 766                 return -EOPNOTSUPP;
 767         }
 768
 769         if (key) {
 770                 rc = ena_com_fill_hash_function(ena_dev, func, key,
 771                                                 ENA_HASH_KEY_SIZE,
 772                                                 0xFFFFFFFF);
 773                 if (unlikely(rc)) {
 774                         netif_err(adapter, drv, netdev, "Cannot fill key\n");
 775                         return rc == -EPERM ? -EOPNOTSUPP : rc;
 776                 }
 777         }
 778
 779         return 0;
 780 }
 781
 782 static void ena_get_channels(struct net_device *netdev,
 783                              struct ethtool_channels *channels)
 784 {
 785         struct ena_adapter *adapter = netdev_priv(netdev);
 786
 787         channels->max_rx = ENA_MAX_NUM_IO_QUEUES;
 788         channels->max_tx = ENA_MAX_NUM_IO_QUEUES;
 789         channels->max_other = 0;
 790         channels->max_combined = 0;
 791         channels->rx_count = adapter->num_queues;
 792         channels->tx_count = adapter->num_queues;
 793         channels->other_count = 0;
 794         channels->combined_count = 0;
 795 }
 796
 797 static int ena_get_tunable(struct net_device *netdev,
 798                            const struct ethtool_tunable *tuna, void *data)
 799 {
 800         struct ena_adapter *adapter = netdev_priv(netdev);
 801         int ret = 0;
 802
 803         switch (tuna->id) {
 804         case ETHTOOL_RX_COPYBREAK:
 805                 *(u32 *)data = adapter->rx_copybreak;
 806                 break;
 807         default:
 808                 ret = -EINVAL;
 809                 break;
 810         }
 811
 812         return ret;
 813 }
 814
 815 static int ena_set_tunable(struct net_device *netdev,
 816                            const struct ethtool_tunable *tuna,
 817                            const void *data)
 818 {
 819         struct ena_adapter *adapter = netdev_priv(netdev);
 820         int ret = 0;
 821         u32 len;
 822
 823         switch (tuna->id) {
 824         case ETHTOOL_RX_COPYBREAK:
 825                 len = *(u32 *)data;
 826                 if (len > adapter->netdev->mtu) {
 827                         ret = -EINVAL;
 828                         break;
 829                 }
 830                 adapter->rx_copybreak = len;
 831                 break;
 832         default:
 833                 ret = -EINVAL;
 834                 break;
 835         }
 836
 837         return ret;
 838 }
 839
 840 static const struct ethtool_ops ena_ethtool_ops = {
 841         .get_link_ksettings     = ena_get_link_ksettings,
 842         .get_drvinfo            = ena_get_drvinfo,
 843         .get_msglevel           = ena_get_msglevel,
 844         .set_msglevel           = ena_set_msglevel,
 845         .get_link               = ethtool_op_get_link,
 846         .get_coalesce           = ena_get_coalesce,
 847         .set_coalesce           = ena_set_coalesce,
 848         .get_ringparam          = ena_get_ringparam,
 849         .get_sset_count         = ena_get_sset_count,
 850         .get_strings            = ena_get_strings,
 851         .get_ethtool_stats      = ena_get_ethtool_stats,
 852         .get_rxnfc              = ena_get_rxnfc,
 853         .set_rxnfc              = ena_set_rxnfc,
 854         .get_rxfh_indir_size    = ena_get_rxfh_indir_size,
 855         .get_rxfh_key_size      = ena_get_rxfh_key_size,
 856         .get_rxfh               = ena_get_rxfh,
 857         .set_rxfh               = ena_set_rxfh,
 858         .get_channels           = ena_get_channels,
 859         .get_tunable            = ena_get_tunable,
 860         .set_tunable            = ena_set_tunable,
 861         .get_ts_info            = ethtool_op_get_ts_info,
 862 };
 863
 864 void ena_set_ethtool_ops(struct net_device *netdev)
 865 {
 866         netdev->ethtool_ops = &ena_ethtool_ops;
 867 }
 868
 869 static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
 870 {
 871         struct net_device *netdev = adapter->netdev;
 872         u8 *strings_buf;
 873         u64 *data_buf;
 874         int strings_num;
 875         int i, rc;
 876
 877         strings_num = ena_get_sset_count(netdev, ETH_SS_STATS);
 878         if (strings_num <= 0) {
 879                 netif_err(adapter, drv, netdev, "Can't get stats num\n");
 880                 return;
 881         }
 882
 883         strings_buf = devm_kzalloc(&adapter->pdev->dev,
 884                                    strings_num * ETH_GSTRING_LEN,
 885                                    GFP_ATOMIC);
 886         if (!strings_buf) {
 887                 netif_err(adapter, drv, netdev,
 888                           "failed to alloc strings_buf\n");
 889                 return;
 890         }
 891
 892         data_buf = devm_kzalloc(&adapter->pdev->dev,
 893                                 strings_num * sizeof(u64),
 894                                 GFP_ATOMIC);
 895         if (!data_buf) {
 896                 netif_err(adapter, drv, netdev,
 897                           "failed to allocate data buf\n");
 898                 devm_kfree(&adapter->pdev->dev, strings_buf);
 899                 return;
 900         }
 901
 902         ena_get_strings(netdev, ETH_SS_STATS, strings_buf);
 903         ena_get_ethtool_stats(netdev, NULL, data_buf);
 904
 905         /* If there is a buffer, dump stats, otherwise print them to dmesg */
 906         if (buf)
 907                 for (i = 0; i < strings_num; i++) {
 908                         rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
 909                                       "%s %llu\n",
 910                                       strings_buf + i * ETH_GSTRING_LEN,
 911                                       data_buf[i]);
 912                         buf += rc;
 913                 }
 914         else
 915                 for (i = 0; i < strings_num; i++)
 916                         netif_err(adapter, drv, netdev, "%s: %llu\n",
 917                                   strings_buf + i * ETH_GSTRING_LEN,
 918                                   data_buf[i]);
 919
 920         devm_kfree(&adapter->pdev->dev, strings_buf);
 921         devm_kfree(&adapter->pdev->dev, data_buf);
 922 }
 923
 924 void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)
 925 {
 926         if (!buf)
 927                 return;
 928
 929         ena_dump_stats_ex(adapter, buf);
 930 }
 931
 932 void ena_dump_stats_to_dmesg(struct ena_adapter *adapter)
 933 {
 934         ena_dump_stats_ex(adapter, NULL);
 935 }