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