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(bad_req_id),
  84 };
  85
  86 static const struct ena_stats ena_stats_rx_strings[] = {
  87         ENA_STAT_RX_ENTRY(cnt),
  88         ENA_STAT_RX_ENTRY(bytes),
  89         ENA_STAT_RX_ENTRY(refil_partial),
  90         ENA_STAT_RX_ENTRY(bad_csum),
  91         ENA_STAT_RX_ENTRY(page_alloc_fail),
  92         ENA_STAT_RX_ENTRY(skb_alloc_fail),
  93         ENA_STAT_RX_ENTRY(dma_mapping_err),
  94         ENA_STAT_RX_ENTRY(bad_desc_num),
  95         ENA_STAT_RX_ENTRY(rx_copybreak_pkt),
  96         ENA_STAT_RX_ENTRY(bad_req_id),
  97         ENA_STAT_RX_ENTRY(empty_rx_ring),
  98 };
  99
 100 static const struct ena_stats ena_stats_ena_com_strings[] = {
 101         ENA_STAT_ENA_COM_ENTRY(aborted_cmd),
 102         ENA_STAT_ENA_COM_ENTRY(submitted_cmd),
 103         ENA_STAT_ENA_COM_ENTRY(completed_cmd),
 104         ENA_STAT_ENA_COM_ENTRY(out_of_space),
 105         ENA_STAT_ENA_COM_ENTRY(no_completion),
 106 };
 107
 108 #define ENA_STATS_ARRAY_GLOBAL  ARRAY_SIZE(ena_stats_global_strings)
 109 #define ENA_STATS_ARRAY_TX      ARRAY_SIZE(ena_stats_tx_strings)
 110 #define ENA_STATS_ARRAY_RX      ARRAY_SIZE(ena_stats_rx_strings)
 111 #define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings)
 112
 113 static void ena_safe_update_stat(u64 *src, u64 *dst,
 114                                  struct u64_stats_sync *syncp)
 115 {
 116         unsigned int start;
 117
 118         do {
 119                 start = u64_stats_fetch_begin_irq(syncp);
 120                 *(dst) = *src;
 121         } while (u64_stats_fetch_retry_irq(syncp, start));
 122 }
 123
 124 static void ena_queue_stats(struct ena_adapter *adapter, u64 **data)
 125 {
 126         const struct ena_stats *ena_stats;
 127         struct ena_ring *ring;
 128
 129         u64 *ptr;
 130         int i, j;
 131
 132         for (i = 0; i < adapter->num_queues; i++) {
 133                 /* Tx stats */
 134                 ring = &adapter->tx_ring[i];
 135
 136                 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
 137                         ena_stats = &ena_stats_tx_strings[j];
 138
 139                         ptr = (u64 *)((uintptr_t)&ring->tx_stats +
 140                                 (uintptr_t)ena_stats->stat_offset);
 141
 142                         ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
 143                 }
 144
 145                 /* Rx stats */
 146                 ring = &adapter->rx_ring[i];
 147
 148                 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
 149                         ena_stats = &ena_stats_rx_strings[j];
 150
 151                         ptr = (u64 *)((uintptr_t)&ring->rx_stats +
 152                                 (uintptr_t)ena_stats->stat_offset);
 153
 154                         ena_safe_update_stat(ptr, (*data)++, &ring->syncp);
 155                 }
 156         }
 157 }
 158
 159 static void ena_dev_admin_queue_stats(struct ena_adapter *adapter, u64 **data)
 160 {
 161         const struct ena_stats *ena_stats;
 162         u32 *ptr;
 163         int i;
 164
 165         for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
 166                 ena_stats = &ena_stats_ena_com_strings[i];
 167
 168                 ptr = (u32 *)((uintptr_t)&adapter->ena_dev->admin_queue.stats +
 169                         (uintptr_t)ena_stats->stat_offset);
 170
 171                 *(*data)++ = *ptr;
 172         }
 173 }
 174
 175 static void ena_get_ethtool_stats(struct net_device *netdev,
 176                                   struct ethtool_stats *stats,
 177                                   u64 *data)
 178 {
 179         struct ena_adapter *adapter = netdev_priv(netdev);
 180         const struct ena_stats *ena_stats;
 181         u64 *ptr;
 182         int i;
 183
 184         for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
 185                 ena_stats = &ena_stats_global_strings[i];
 186
 187                 ptr = (u64 *)((uintptr_t)&adapter->dev_stats +
 188                         (uintptr_t)ena_stats->stat_offset);
 189
 190                 ena_safe_update_stat(ptr, data++, &adapter->syncp);
 191         }
 192
 193         ena_queue_stats(adapter, &data);
 194         ena_dev_admin_queue_stats(adapter, &data);
 195 }
 196
 197 int ena_get_sset_count(struct net_device *netdev, int sset)
 198 {
 199         struct ena_adapter *adapter = netdev_priv(netdev);
 200
 201         if (sset != ETH_SS_STATS)
 202                 return -EOPNOTSUPP;
 203
 204         return  adapter->num_queues * (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX)
 205                 + ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
 206 }
 207
 208 static void ena_queue_strings(struct ena_adapter *adapter, u8 **data)
 209 {
 210         const struct ena_stats *ena_stats;
 211         int i, j;
 212
 213         for (i = 0; i < adapter->num_queues; i++) {
 214                 /* Tx stats */
 215                 for (j = 0; j < ENA_STATS_ARRAY_TX; j++) {
 216                         ena_stats = &ena_stats_tx_strings[j];
 217
 218                         snprintf(*data, ETH_GSTRING_LEN,
 219                                  "queue_%u_tx_%s", i, ena_stats->name);
 220                          (*data) += ETH_GSTRING_LEN;
 221                 }
 222                 /* Rx stats */
 223                 for (j = 0; j < ENA_STATS_ARRAY_RX; j++) {
 224                         ena_stats = &ena_stats_rx_strings[j];
 225
 226                         snprintf(*data, ETH_GSTRING_LEN,
 227                                  "queue_%u_rx_%s", i, ena_stats->name);
 228                         (*data) += ETH_GSTRING_LEN;
 229                 }
 230         }
 231 }
 232
 233 static void ena_com_dev_strings(u8 **data)
 234 {
 235         const struct ena_stats *ena_stats;
 236         int i;
 237
 238         for (i = 0; i < ENA_STATS_ARRAY_ENA_COM; i++) {
 239                 ena_stats = &ena_stats_ena_com_strings[i];
 240
 241                 snprintf(*data, ETH_GSTRING_LEN,
 242                          "ena_admin_q_%s", ena_stats->name);
 243                 (*data) += ETH_GSTRING_LEN;
 244         }
 245 }
 246
 247 static void ena_get_strings(struct net_device *netdev, u32 sset, u8 *data)
 248 {
 249         struct ena_adapter *adapter = netdev_priv(netdev);
 250         const struct ena_stats *ena_stats;
 251         int i;
 252
 253         if (sset != ETH_SS_STATS)
 254                 return;
 255
 256         for (i = 0; i < ENA_STATS_ARRAY_GLOBAL; i++) {
 257                 ena_stats = &ena_stats_global_strings[i];
 258
 259                 memcpy(data, ena_stats->name, ETH_GSTRING_LEN);
 260                 data += ETH_GSTRING_LEN;
 261         }
 262
 263         ena_queue_strings(adapter, &data);
 264         ena_com_dev_strings(&data);
 265 }
 266
 267 static int ena_get_link_ksettings(struct net_device *netdev,
 268                                   struct ethtool_link_ksettings *link_ksettings)
 269 {
 270         struct ena_adapter *adapter = netdev_priv(netdev);
 271         struct ena_com_dev *ena_dev = adapter->ena_dev;
 272         struct ena_admin_get_feature_link_desc *link;
 273         struct ena_admin_get_feat_resp feat_resp;
 274         int rc;
 275
 276         rc = ena_com_get_link_params(ena_dev, &feat_resp);
 277         if (rc)
 278                 return rc;
 279
 280         link = &feat_resp.u.link;
 281         link_ksettings->base.speed = link->speed;
 282
 283         if (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) {
 284                 ethtool_link_ksettings_add_link_mode(link_ksettings,
 285                                                      supported, Autoneg);
 286                 ethtool_link_ksettings_add_link_mode(link_ksettings,
 287                                                      supported, Autoneg);
 288         }
 289
 290         link_ksettings->base.autoneg =
 291                 (link->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK) ?
 292                 AUTONEG_ENABLE : AUTONEG_DISABLE;
 293
 294         link_ksettings->base.duplex = DUPLEX_FULL;
 295
 296         return 0;
 297 }
 298
 299 static int ena_get_coalesce(struct net_device *net_dev,
 300                             struct ethtool_coalesce *coalesce)
 301 {
 302         struct ena_adapter *adapter = netdev_priv(net_dev);
 303         struct ena_com_dev *ena_dev = adapter->ena_dev;
 304         struct ena_intr_moder_entry intr_moder_entry;
 305
 306         if (!ena_com_interrupt_moderation_supported(ena_dev)) {
 307                 /* the devie doesn't support interrupt moderation */
 308                 return -EOPNOTSUPP;
 309         }
 310         coalesce->tx_coalesce_usecs =
 311                 ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) /
 312                         ena_dev->intr_delay_resolution;
 313         if (!ena_com_get_adaptive_moderation_enabled(ena_dev)) {
 314                 coalesce->rx_coalesce_usecs =
 315                         ena_com_get_nonadaptive_moderation_interval_rx(ena_dev)
 316                         / ena_dev->intr_delay_resolution;
 317         } else {
 318                 ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_LOWEST, &intr_moder_entry);
 319                 coalesce->rx_coalesce_usecs_low = intr_moder_entry.intr_moder_interval;
 320                 coalesce->rx_max_coalesced_frames_low = intr_moder_entry.pkts_per_interval;
 321
 322                 ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_MID, &intr_moder_entry);
 323                 coalesce->rx_coalesce_usecs = intr_moder_entry.intr_moder_interval;
 324                 coalesce->rx_max_coalesced_frames = intr_moder_entry.pkts_per_interval;
 325
 326                 ena_com_get_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_HIGHEST, &intr_moder_entry);
 327                 coalesce->rx_coalesce_usecs_high = intr_moder_entry.intr_moder_interval;
 328                 coalesce->rx_max_coalesced_frames_high = intr_moder_entry.pkts_per_interval;
 329         }
 330         coalesce->use_adaptive_rx_coalesce =
 331                 ena_com_get_adaptive_moderation_enabled(ena_dev);
 332
 333         return 0;
 334 }
 335
 336 static void ena_update_tx_rings_intr_moderation(struct ena_adapter *adapter)
 337 {
 338         unsigned int val;
 339         int i;
 340
 341         val = ena_com_get_nonadaptive_moderation_interval_tx(adapter->ena_dev);
 342
 343         for (i = 0; i < adapter->num_queues; i++)
 344                 adapter->tx_ring[i].smoothed_interval = val;
 345 }
 346
 347 static int ena_set_coalesce(struct net_device *net_dev,
 348                             struct ethtool_coalesce *coalesce)
 349 {
 350         struct ena_adapter *adapter = netdev_priv(net_dev);
 351         struct ena_com_dev *ena_dev = adapter->ena_dev;
 352         struct ena_intr_moder_entry intr_moder_entry;
 353         int rc;
 354
 355         if (!ena_com_interrupt_moderation_supported(ena_dev)) {
 356                 /* the devie doesn't support interrupt moderation */
 357                 return -EOPNOTSUPP;
 358         }
 359
 360         if (coalesce->rx_coalesce_usecs_irq ||
 361             coalesce->rx_max_coalesced_frames_irq ||
 362             coalesce->tx_coalesce_usecs_irq ||
 363             coalesce->tx_max_coalesced_frames ||
 364             coalesce->tx_max_coalesced_frames_irq ||
 365             coalesce->stats_block_coalesce_usecs ||
 366             coalesce->use_adaptive_tx_coalesce ||
 367             coalesce->pkt_rate_low ||
 368             coalesce->tx_coalesce_usecs_low ||
 369             coalesce->tx_max_coalesced_frames_low ||
 370             coalesce->pkt_rate_high ||
 371             coalesce->tx_coalesce_usecs_high ||
 372             coalesce->tx_max_coalesced_frames_high ||
 373             coalesce->rate_sample_interval)
 374                 return -EINVAL;
 375
 376         rc = ena_com_update_nonadaptive_moderation_interval_tx(ena_dev,
 377                                                                coalesce->tx_coalesce_usecs);
 378         if (rc)
 379                 return rc;
 380
 381         ena_update_tx_rings_intr_moderation(adapter);
 382
 383         if (ena_com_get_adaptive_moderation_enabled(ena_dev)) {
 384                 if (!coalesce->use_adaptive_rx_coalesce) {
 385                         ena_com_disable_adaptive_moderation(ena_dev);
 386                         rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
 387                                                                                coalesce->rx_coalesce_usecs);
 388                         return rc;
 389                 }
 390         } else { /* was in non-adaptive mode */
 391                 if (coalesce->use_adaptive_rx_coalesce) {
 392                         ena_com_enable_adaptive_moderation(ena_dev);
 393                 } else {
 394                         rc = ena_com_update_nonadaptive_moderation_interval_rx(ena_dev,
 395                                                                                coalesce->rx_coalesce_usecs);
 396                         return rc;
 397                 }
 398         }
 399
 400         intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs_low;
 401         intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames_low;
 402         intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED;
 403         ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_LOWEST, &intr_moder_entry);
 404
 405         intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs;
 406         intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames;
 407         intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED;
 408         ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_MID, &intr_moder_entry);
 409
 410         intr_moder_entry.intr_moder_interval = coalesce->rx_coalesce_usecs_high;
 411         intr_moder_entry.pkts_per_interval = coalesce->rx_max_coalesced_frames_high;
 412         intr_moder_entry.bytes_per_interval = ENA_INTR_BYTE_COUNT_NOT_SUPPORTED;
 413         ena_com_init_intr_moderation_entry(adapter->ena_dev, ENA_INTR_MODER_HIGHEST, &intr_moder_entry);
 414
 415         return 0;
 416 }
 417
 418 static u32 ena_get_msglevel(struct net_device *netdev)
 419 {
 420         struct ena_adapter *adapter = netdev_priv(netdev);
 421
 422         return adapter->msg_enable;
 423 }
 424
 425 static void ena_set_msglevel(struct net_device *netdev, u32 value)
 426 {
 427         struct ena_adapter *adapter = netdev_priv(netdev);
 428
 429         adapter->msg_enable = value;
 430 }
 431
 432 static void ena_get_drvinfo(struct net_device *dev,
 433                             struct ethtool_drvinfo *info)
 434 {
 435         struct ena_adapter *adapter = netdev_priv(dev);
 436
 437         strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
 438         strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
 439         strlcpy(info->bus_info, pci_name(adapter->pdev),
 440                 sizeof(info->bus_info));
 441 }
 442
 443 static void ena_get_ringparam(struct net_device *netdev,
 444                               struct ethtool_ringparam *ring)
 445 {
 446         struct ena_adapter *adapter = netdev_priv(netdev);
 447         struct ena_ring *tx_ring = &adapter->tx_ring[0];
 448         struct ena_ring *rx_ring = &adapter->rx_ring[0];
 449
 450         ring->rx_max_pending = rx_ring->ring_size;
 451         ring->tx_max_pending = tx_ring->ring_size;
 452         ring->rx_pending = rx_ring->ring_size;
 453         ring->tx_pending = tx_ring->ring_size;
 454 }
 455
 456 static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
 457 {
 458         u32 data = 0;
 459
 460         if (hash_fields & ENA_ADMIN_RSS_L2_DA)
 461                 data |= RXH_L2DA;
 462
 463         if (hash_fields & ENA_ADMIN_RSS_L3_DA)
 464                 data |= RXH_IP_DST;
 465
 466         if (hash_fields & ENA_ADMIN_RSS_L3_SA)
 467                 data |= RXH_IP_SRC;
 468
 469         if (hash_fields & ENA_ADMIN_RSS_L4_DP)
 470                 data |= RXH_L4_B_2_3;
 471
 472         if (hash_fields & ENA_ADMIN_RSS_L4_SP)
 473                 data |= RXH_L4_B_0_1;
 474
 475         return data;
 476 }
 477
 478 static u16 ena_flow_data_to_flow_hash(u32 hash_fields)
 479 {
 480         u16 data = 0;
 481
 482         if (hash_fields & RXH_L2DA)
 483                 data |= ENA_ADMIN_RSS_L2_DA;
 484
 485         if (hash_fields & RXH_IP_DST)
 486                 data |= ENA_ADMIN_RSS_L3_DA;
 487
 488         if (hash_fields & RXH_IP_SRC)
 489                 data |= ENA_ADMIN_RSS_L3_SA;
 490
 491         if (hash_fields & RXH_L4_B_2_3)
 492                 data |= ENA_ADMIN_RSS_L4_DP;
 493
 494         if (hash_fields & RXH_L4_B_0_1)
 495                 data |= ENA_ADMIN_RSS_L4_SP;
 496
 497         return data;
 498 }
 499
 500 static int ena_get_rss_hash(struct ena_com_dev *ena_dev,
 501                             struct ethtool_rxnfc *cmd)
 502 {
 503         enum ena_admin_flow_hash_proto proto;
 504         u16 hash_fields;
 505         int rc;
 506
 507         cmd->data = 0;
 508
 509         switch (cmd->flow_type) {
 510         case TCP_V4_FLOW:
 511                 proto = ENA_ADMIN_RSS_TCP4;
 512                 break;
 513         case UDP_V4_FLOW:
 514                 proto = ENA_ADMIN_RSS_UDP4;
 515                 break;
 516         case TCP_V6_FLOW:
 517                 proto = ENA_ADMIN_RSS_TCP6;
 518                 break;
 519         case UDP_V6_FLOW:
 520                 proto = ENA_ADMIN_RSS_UDP6;
 521                 break;
 522         case IPV4_FLOW:
 523                 proto = ENA_ADMIN_RSS_IP4;
 524                 break;
 525         case IPV6_FLOW:
 526                 proto = ENA_ADMIN_RSS_IP6;
 527                 break;
 528         case ETHER_FLOW:
 529                 proto = ENA_ADMIN_RSS_NOT_IP;
 530                 break;
 531         case AH_V4_FLOW:
 532         case ESP_V4_FLOW:
 533         case AH_V6_FLOW:
 534         case ESP_V6_FLOW:
 535         case SCTP_V4_FLOW:
 536         case AH_ESP_V4_FLOW:
 537                 return -EOPNOTSUPP;
 538         default:
 539                 return -EINVAL;
 540         }
 541
 542         rc = ena_com_get_hash_ctrl(ena_dev, proto, &hash_fields);
 543         if (rc)
 544                 return rc;
 545
 546         cmd->data = ena_flow_hash_to_flow_type(hash_fields);
 547
 548         return 0;
 549 }
 550
 551 static int ena_set_rss_hash(struct ena_com_dev *ena_dev,
 552                             struct ethtool_rxnfc *cmd)
 553 {
 554         enum ena_admin_flow_hash_proto proto;
 555         u16 hash_fields;
 556
 557         switch (cmd->flow_type) {
 558         case TCP_V4_FLOW:
 559                 proto = ENA_ADMIN_RSS_TCP4;
 560                 break;
 561         case UDP_V4_FLOW:
 562                 proto = ENA_ADMIN_RSS_UDP4;
 563                 break;
 564         case TCP_V6_FLOW:
 565                 proto = ENA_ADMIN_RSS_TCP6;
 566                 break;
 567         case UDP_V6_FLOW:
 568                 proto = ENA_ADMIN_RSS_UDP6;
 569                 break;
 570         case IPV4_FLOW:
 571                 proto = ENA_ADMIN_RSS_IP4;
 572                 break;
 573         case IPV6_FLOW:
 574                 proto = ENA_ADMIN_RSS_IP6;
 575                 break;
 576         case ETHER_FLOW:
 577                 proto = ENA_ADMIN_RSS_NOT_IP;
 578                 break;
 579         case AH_V4_FLOW:
 580         case ESP_V4_FLOW:
 581         case AH_V6_FLOW:
 582         case ESP_V6_FLOW:
 583         case SCTP_V4_FLOW:
 584         case AH_ESP_V4_FLOW:
 585                 return -EOPNOTSUPP;
 586         default:
 587                 return -EINVAL;
 588         }
 589
 590         hash_fields = ena_flow_data_to_flow_hash(cmd->data);
 591
 592         return ena_com_fill_hash_ctrl(ena_dev, proto, hash_fields);
 593 }
 594
 595 static int ena_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info)
 596 {
 597         struct ena_adapter *adapter = netdev_priv(netdev);
 598         int rc = 0;
 599
 600         switch (info->cmd) {
 601         case ETHTOOL_SRXFH:
 602                 rc = ena_set_rss_hash(adapter->ena_dev, info);
 603                 break;
 604         case ETHTOOL_SRXCLSRLDEL:
 605         case ETHTOOL_SRXCLSRLINS:
 606         default:
 607                 netif_err(adapter, drv, netdev,
 608                           "Command parameter %d is not supported\n", info->cmd);
 609                 rc = -EOPNOTSUPP;
 610         }
 611
 612         return rc;
 613 }
 614
 615 static int ena_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *info,
 616                          u32 *rules)
 617 {
 618         struct ena_adapter *adapter = netdev_priv(netdev);
 619         int rc = 0;
 620
 621         switch (info->cmd) {
 622         case ETHTOOL_GRXRINGS:
 623                 info->data = adapter->num_queues;
 624                 rc = 0;
 625                 break;
 626         case ETHTOOL_GRXFH:
 627                 rc = ena_get_rss_hash(adapter->ena_dev, info);
 628                 break;
 629         case ETHTOOL_GRXCLSRLCNT:
 630         case ETHTOOL_GRXCLSRULE:
 631         case ETHTOOL_GRXCLSRLALL:
 632         default:
 633                 netif_err(adapter, drv, netdev,
 634                           "Command parameter %d is not supported\n", info->cmd);
 635                 rc = -EOPNOTSUPP;
 636         }
 637
 638         return rc;
 639 }
 640
 641 static u32 ena_get_rxfh_indir_size(struct net_device *netdev)
 642 {
 643         return ENA_RX_RSS_TABLE_SIZE;
 644 }
 645
 646 static u32 ena_get_rxfh_key_size(struct net_device *netdev)
 647 {
 648         return ENA_HASH_KEY_SIZE;
 649 }
 650
 651 static int ena_indirection_table_get(struct ena_adapter *adapter, u32 *indir)
 652 {
 653         struct ena_com_dev *ena_dev = adapter->ena_dev;
 654         int i, rc;
 655
 656         if (!indir)
 657                 return 0;
 658
 659         rc = ena_com_indirect_table_get(ena_dev, indir);
 660         if (rc)
 661                 return rc;
 662
 663         /* Our internal representation of the indices is: even indices
 664          * for Tx and uneven indices for Rx. We need to convert the Rx
 665          * indices to be consecutive
 666          */
 667         for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++)
 668                 indir[i] = ENA_IO_RXQ_IDX_TO_COMBINED_IDX(indir[i]);
 669
 670         return rc;
 671 }
 672
 673 static int ena_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
 674                         u8 *hfunc)
 675 {
 676         struct ena_adapter *adapter = netdev_priv(netdev);
 677         enum ena_admin_hash_functions ena_func;
 678         u8 func;
 679         int rc;
 680
 681         rc = ena_indirection_table_get(adapter, indir);
 682         if (rc)
 683                 return rc;
 684
 685         /* We call this function in order to check if the device
 686          * supports getting/setting the hash function.
 687          */
 688         rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func, key);
 689
 690         if (rc) {
 691                 if (rc == -EOPNOTSUPP) {
 692                         key = NULL;
 693                         hfunc = NULL;
 694                         rc = 0;
 695                 }
 696
 697                 return rc;
 698         }
 699
 700         if (rc)
 701                 return rc;
 702
 703         switch (ena_func) {
 704         case ENA_ADMIN_TOEPLITZ:
 705                 func = ETH_RSS_HASH_TOP;
 706                 break;
 707         case ENA_ADMIN_CRC32:
 708                 func = ETH_RSS_HASH_CRC32;
 709                 break;
 710         default:
 711                 netif_err(adapter, drv, netdev,
 712                           "Command parameter is not supported\n");
 713                 return -EOPNOTSUPP;
 714         }
 715
 716         if (hfunc)
 717                 *hfunc = func;
 718
 719         return rc;
 720 }
 721
 722 static int ena_set_rxfh(struct net_device *netdev, const u32 *indir,
 723                         const u8 *key, const u8 hfunc)
 724 {
 725         struct ena_adapter *adapter = netdev_priv(netdev);
 726         struct ena_com_dev *ena_dev = adapter->ena_dev;
 727         enum ena_admin_hash_functions func;
 728         int rc, i;
 729
 730         if (indir) {
 731                 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
 732                         rc = ena_com_indirect_table_fill_entry(ena_dev,
 733                                                                i,
 734                                                                ENA_IO_RXQ_IDX(indir[i]));
 735                         if (unlikely(rc)) {
 736                                 netif_err(adapter, drv, netdev,
 737                                           "Cannot fill indirect table (index is too large)\n");
 738                                 return rc;
 739                         }
 740                 }
 741
 742                 rc = ena_com_indirect_table_set(ena_dev);
 743                 if (rc) {
 744                         netif_err(adapter, drv, netdev,
 745                                   "Cannot set indirect table\n");
 746                         return rc == -EPERM ? -EOPNOTSUPP : rc;
 747                 }
 748         }
 749
 750         switch (hfunc) {
 751         case ETH_RSS_HASH_NO_CHANGE:
 752                 func = ena_com_get_current_hash_function(ena_dev);
 753                 break;
 754         case ETH_RSS_HASH_TOP:
 755                 func = ENA_ADMIN_TOEPLITZ;
 756                 break;
 757         case ETH_RSS_HASH_CRC32:
 758                 func = ENA_ADMIN_CRC32;
 759                 break;
 760         default:
 761                 netif_err(adapter, drv, netdev, "Unsupported hfunc %d\n",
 762                           hfunc);
 763                 return -EOPNOTSUPP;
 764         }
 765
 766         if (key) {
 767                 rc = ena_com_fill_hash_function(ena_dev, func, key,
 768                                                 ENA_HASH_KEY_SIZE,
 769                                                 0xFFFFFFFF);
 770                 if (unlikely(rc)) {
 771                         netif_err(adapter, drv, netdev, "Cannot fill key\n");
 772                         return rc == -EPERM ? -EOPNOTSUPP : rc;
 773                 }
 774         }
 775
 776         return 0;
 777 }
 778
 779 static void ena_get_channels(struct net_device *netdev,
 780                              struct ethtool_channels *channels)
 781 {
 782         struct ena_adapter *adapter = netdev_priv(netdev);
 783
 784         channels->max_rx = adapter->num_queues;
 785         channels->max_tx = adapter->num_queues;
 786         channels->max_other = 0;
 787         channels->max_combined = 0;
 788         channels->rx_count = adapter->num_queues;
 789         channels->tx_count = adapter->num_queues;
 790         channels->other_count = 0;
 791         channels->combined_count = 0;
 792 }
 793
 794 static int ena_get_tunable(struct net_device *netdev,
 795                            const struct ethtool_tunable *tuna, void *data)
 796 {
 797         struct ena_adapter *adapter = netdev_priv(netdev);
 798         int ret = 0;
 799
 800         switch (tuna->id) {
 801         case ETHTOOL_RX_COPYBREAK:
 802                 *(u32 *)data = adapter->rx_copybreak;
 803                 break;
 804         default:
 805                 ret = -EINVAL;
 806                 break;
 807         }
 808
 809         return ret;
 810 }
 811
 812 static int ena_set_tunable(struct net_device *netdev,
 813                            const struct ethtool_tunable *tuna,
 814                            const void *data)
 815 {
 816         struct ena_adapter *adapter = netdev_priv(netdev);
 817         int ret = 0;
 818         u32 len;
 819
 820         switch (tuna->id) {
 821         case ETHTOOL_RX_COPYBREAK:
 822                 len = *(u32 *)data;
 823                 if (len > adapter->netdev->mtu) {
 824                         ret = -EINVAL;
 825                         break;
 826                 }
 827                 adapter->rx_copybreak = len;
 828                 break;
 829         default:
 830                 ret = -EINVAL;
 831                 break;
 832         }
 833
 834         return ret;
 835 }
 836
 837 static const struct ethtool_ops ena_ethtool_ops = {
 838         .get_link_ksettings     = ena_get_link_ksettings,
 839         .get_drvinfo            = ena_get_drvinfo,
 840         .get_msglevel           = ena_get_msglevel,
 841         .set_msglevel           = ena_set_msglevel,
 842         .get_link               = ethtool_op_get_link,
 843         .get_coalesce           = ena_get_coalesce,
 844         .set_coalesce           = ena_set_coalesce,
 845         .get_ringparam          = ena_get_ringparam,
 846         .get_sset_count         = ena_get_sset_count,
 847         .get_strings            = ena_get_strings,
 848         .get_ethtool_stats      = ena_get_ethtool_stats,
 849         .get_rxnfc              = ena_get_rxnfc,
 850         .set_rxnfc              = ena_set_rxnfc,
 851         .get_rxfh_indir_size    = ena_get_rxfh_indir_size,
 852         .get_rxfh_key_size      = ena_get_rxfh_key_size,
 853         .get_rxfh               = ena_get_rxfh,
 854         .set_rxfh               = ena_set_rxfh,
 855         .get_channels           = ena_get_channels,
 856         .get_tunable            = ena_get_tunable,
 857         .set_tunable            = ena_set_tunable,
 858         .get_ts_info            = ethtool_op_get_ts_info,
 859 };
 860
 861 void ena_set_ethtool_ops(struct net_device *netdev)
 862 {
 863         netdev->ethtool_ops = &ena_ethtool_ops;
 864 }
 865
 866 static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
 867 {
 868         struct net_device *netdev = adapter->netdev;
 869         u8 *strings_buf;
 870         u64 *data_buf;
 871         int strings_num;
 872         int i, rc;
 873
 874         strings_num = ena_get_sset_count(netdev, ETH_SS_STATS);
 875         if (strings_num <= 0) {
 876                 netif_err(adapter, drv, netdev, "Can't get stats num\n");
 877                 return;
 878         }
 879
 880         strings_buf = devm_kzalloc(&adapter->pdev->dev,
 881                                    strings_num * ETH_GSTRING_LEN,
 882                                    GFP_ATOMIC);
 883         if (!strings_buf) {
 884                 netif_err(adapter, drv, netdev,
 885                           "failed to alloc strings_buf\n");
 886                 return;
 887         }
 888
 889         data_buf = devm_kzalloc(&adapter->pdev->dev,
 890                                 strings_num * sizeof(u64),
 891                                 GFP_ATOMIC);
 892         if (!data_buf) {
 893                 netif_err(adapter, drv, netdev,
 894                           "failed to allocate data buf\n");
 895                 devm_kfree(&adapter->pdev->dev, strings_buf);
 896                 return;
 897         }
 898
 899         ena_get_strings(netdev, ETH_SS_STATS, strings_buf);
 900         ena_get_ethtool_stats(netdev, NULL, data_buf);
 901
 902         /* If there is a buffer, dump stats, otherwise print them to dmesg */
 903         if (buf)
 904                 for (i = 0; i < strings_num; i++) {
 905                         rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
 906                                       "%s %llu\n",
 907                                       strings_buf + i * ETH_GSTRING_LEN,
 908                                       data_buf[i]);
 909                         buf += rc;
 910                 }
 911         else
 912                 for (i = 0; i < strings_num; i++)
 913                         netif_err(adapter, drv, netdev, "%s: %llu\n",
 914                                   strings_buf + i * ETH_GSTRING_LEN,
 915                                   data_buf[i]);
 916
 917         devm_kfree(&adapter->pdev->dev, strings_buf);
 918         devm_kfree(&adapter->pdev->dev, data_buf);
 919 }
 920
 921 void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)
 922 {
 923         if (!buf)
 924                 return;
 925
 926         ena_dump_stats_ex(adapter, buf);
 927 }
 928
 929 void ena_dump_stats_to_dmesg(struct ena_adapter *adapter)
 930 {
 931         ena_dump_stats_ex(adapter, NULL);
 932 }