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