1 /**************************************************************************** 2 * Driver for Solarflare network controllers and boards 3 * Copyright 2005-2006 Fen Systems Ltd. 4 * Copyright 2006-2013 Solarflare Communications Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 as published 8 * by the Free Software Foundation, incorporated herein by reference. 9 */ 10 11 #include <linux/netdevice.h> 12 #include <linux/ethtool.h> 13 #include <linux/rtnetlink.h> 14 #include <linux/in.h> 15 #include "net_driver.h" 16 #include "workarounds.h" 17 #include "selftest.h" 18 #include "efx.h" 19 #include "filter.h" 20 #include "nic.h" 21 22 struct efx_sw_stat_desc { 23 const char *name; 24 enum { 25 EFX_ETHTOOL_STAT_SOURCE_nic, 26 EFX_ETHTOOL_STAT_SOURCE_channel, 27 EFX_ETHTOOL_STAT_SOURCE_tx_queue 28 } source; 29 unsigned offset; 30 u64(*get_stat) (void *field); /* Reader function */ 31 }; 32 33 /* Initialiser for a struct efx_sw_stat_desc with type-checking */ 34 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \ 35 get_stat_function) { \ 36 .name = #stat_name, \ 37 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \ 38 .offset = ((((field_type *) 0) == \ 39 &((struct efx_##source_name *)0)->field) ? \ 40 offsetof(struct efx_##source_name, field) : \ 41 offsetof(struct efx_##source_name, field)), \ 42 .get_stat = get_stat_function, \ 43 } 44 45 static u64 efx_get_uint_stat(void *field) 46 { 47 return *(unsigned int *)field; 48 } 49 50 static u64 efx_get_atomic_stat(void *field) 51 { 52 return atomic_read((atomic_t *) field); 53 } 54 55 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \ 56 EFX_ETHTOOL_STAT(field, nic, field, \ 57 atomic_t, efx_get_atomic_stat) 58 59 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \ 60 EFX_ETHTOOL_STAT(field, channel, n_##field, \ 61 unsigned int, efx_get_uint_stat) 62 63 #define EFX_ETHTOOL_UINT_TXQ_STAT(field) \ 64 EFX_ETHTOOL_STAT(tx_##field, tx_queue, field, \ 65 unsigned int, efx_get_uint_stat) 66 67 static const struct efx_sw_stat_desc efx_sw_stat_desc[] = { 68 EFX_ETHTOOL_UINT_TXQ_STAT(merge_events), 69 EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts), 70 EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers), 71 EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets), 72 EFX_ETHTOOL_UINT_TXQ_STAT(pushes), 73 EFX_ETHTOOL_UINT_TXQ_STAT(pio_packets), 74 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset), 75 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc), 76 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err), 77 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err), 78 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch), 79 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc), 80 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_nodesc_trunc), 81 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events), 82 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets), 83 }; 84 85 #define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc) 86 87 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB 88 89 /************************************************************************** 90 * 91 * Ethtool operations 92 * 93 ************************************************************************** 94 */ 95 96 /* Identify device by flashing LEDs */ 97 static int efx_ethtool_phys_id(struct net_device *net_dev, 98 enum ethtool_phys_id_state state) 99 { 100 struct efx_nic *efx = netdev_priv(net_dev); 101 enum efx_led_mode mode = EFX_LED_DEFAULT; 102 103 switch (state) { 104 case ETHTOOL_ID_ON: 105 mode = EFX_LED_ON; 106 break; 107 case ETHTOOL_ID_OFF: 108 mode = EFX_LED_OFF; 109 break; 110 case ETHTOOL_ID_INACTIVE: 111 mode = EFX_LED_DEFAULT; 112 break; 113 case ETHTOOL_ID_ACTIVE: 114 return 1; /* cycle on/off once per second */ 115 } 116 117 efx->type->set_id_led(efx, mode); 118 return 0; 119 } 120 121 /* This must be called with rtnl_lock held. */ 122 static int efx_ethtool_get_settings(struct net_device *net_dev, 123 struct ethtool_cmd *ecmd) 124 { 125 struct efx_nic *efx = netdev_priv(net_dev); 126 struct efx_link_state *link_state = &efx->link_state; 127 128 mutex_lock(&efx->mac_lock); 129 efx->phy_op->get_settings(efx, ecmd); 130 mutex_unlock(&efx->mac_lock); 131 132 /* Both MACs support pause frames (bidirectional and respond-only) */ 133 ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; 134 135 if (LOOPBACK_INTERNAL(efx)) { 136 ethtool_cmd_speed_set(ecmd, link_state->speed); 137 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF; 138 } 139 140 return 0; 141 } 142 143 /* This must be called with rtnl_lock held. */ 144 static int efx_ethtool_set_settings(struct net_device *net_dev, 145 struct ethtool_cmd *ecmd) 146 { 147 struct efx_nic *efx = netdev_priv(net_dev); 148 int rc; 149 150 /* GMAC does not support 1000Mbps HD */ 151 if ((ethtool_cmd_speed(ecmd) == SPEED_1000) && 152 (ecmd->duplex != DUPLEX_FULL)) { 153 netif_dbg(efx, drv, efx->net_dev, 154 "rejecting unsupported 1000Mbps HD setting\n"); 155 return -EINVAL; 156 } 157 158 mutex_lock(&efx->mac_lock); 159 rc = efx->phy_op->set_settings(efx, ecmd); 160 mutex_unlock(&efx->mac_lock); 161 return rc; 162 } 163 164 static void efx_ethtool_get_drvinfo(struct net_device *net_dev, 165 struct ethtool_drvinfo *info) 166 { 167 struct efx_nic *efx = netdev_priv(net_dev); 168 169 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 170 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version)); 171 if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0) 172 efx_mcdi_print_fwver(efx, info->fw_version, 173 sizeof(info->fw_version)); 174 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info)); 175 } 176 177 static int efx_ethtool_get_regs_len(struct net_device *net_dev) 178 { 179 return efx_nic_get_regs_len(netdev_priv(net_dev)); 180 } 181 182 static void efx_ethtool_get_regs(struct net_device *net_dev, 183 struct ethtool_regs *regs, void *buf) 184 { 185 struct efx_nic *efx = netdev_priv(net_dev); 186 187 regs->version = efx->type->revision; 188 efx_nic_get_regs(efx, buf); 189 } 190 191 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev) 192 { 193 struct efx_nic *efx = netdev_priv(net_dev); 194 return efx->msg_enable; 195 } 196 197 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable) 198 { 199 struct efx_nic *efx = netdev_priv(net_dev); 200 efx->msg_enable = msg_enable; 201 } 202 203 /** 204 * efx_fill_test - fill in an individual self-test entry 205 * @test_index: Index of the test 206 * @strings: Ethtool strings, or %NULL 207 * @data: Ethtool test results, or %NULL 208 * @test: Pointer to test result (used only if data != %NULL) 209 * @unit_format: Unit name format (e.g. "chan\%d") 210 * @unit_id: Unit id (e.g. 0 for "chan0") 211 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent") 212 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent") 213 * 214 * Fill in an individual self-test entry. 215 */ 216 static void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data, 217 int *test, const char *unit_format, int unit_id, 218 const char *test_format, const char *test_id) 219 { 220 char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN]; 221 222 /* Fill data value, if applicable */ 223 if (data) 224 data[test_index] = *test; 225 226 /* Fill string, if applicable */ 227 if (strings) { 228 if (strchr(unit_format, '%')) 229 snprintf(unit_str, sizeof(unit_str), 230 unit_format, unit_id); 231 else 232 strcpy(unit_str, unit_format); 233 snprintf(test_str, sizeof(test_str), test_format, test_id); 234 snprintf(strings + test_index * ETH_GSTRING_LEN, 235 ETH_GSTRING_LEN, 236 "%-6s %-24s", unit_str, test_str); 237 } 238 } 239 240 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel 241 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue 242 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue 243 #define EFX_LOOPBACK_NAME(_mode, _counter) \ 244 "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode) 245 246 /** 247 * efx_fill_loopback_test - fill in a block of loopback self-test entries 248 * @efx: Efx NIC 249 * @lb_tests: Efx loopback self-test results structure 250 * @mode: Loopback test mode 251 * @test_index: Starting index of the test 252 * @strings: Ethtool strings, or %NULL 253 * @data: Ethtool test results, or %NULL 254 */ 255 static int efx_fill_loopback_test(struct efx_nic *efx, 256 struct efx_loopback_self_tests *lb_tests, 257 enum efx_loopback_mode mode, 258 unsigned int test_index, 259 u8 *strings, u64 *data) 260 { 261 struct efx_channel *channel = 262 efx_get_channel(efx, efx->tx_channel_offset); 263 struct efx_tx_queue *tx_queue; 264 265 efx_for_each_channel_tx_queue(tx_queue, channel) { 266 efx_fill_test(test_index++, strings, data, 267 &lb_tests->tx_sent[tx_queue->queue], 268 EFX_TX_QUEUE_NAME(tx_queue), 269 EFX_LOOPBACK_NAME(mode, "tx_sent")); 270 efx_fill_test(test_index++, strings, data, 271 &lb_tests->tx_done[tx_queue->queue], 272 EFX_TX_QUEUE_NAME(tx_queue), 273 EFX_LOOPBACK_NAME(mode, "tx_done")); 274 } 275 efx_fill_test(test_index++, strings, data, 276 &lb_tests->rx_good, 277 "rx", 0, 278 EFX_LOOPBACK_NAME(mode, "rx_good")); 279 efx_fill_test(test_index++, strings, data, 280 &lb_tests->rx_bad, 281 "rx", 0, 282 EFX_LOOPBACK_NAME(mode, "rx_bad")); 283 284 return test_index; 285 } 286 287 /** 288 * efx_ethtool_fill_self_tests - get self-test details 289 * @efx: Efx NIC 290 * @tests: Efx self-test results structure, or %NULL 291 * @strings: Ethtool strings, or %NULL 292 * @data: Ethtool test results, or %NULL 293 */ 294 static int efx_ethtool_fill_self_tests(struct efx_nic *efx, 295 struct efx_self_tests *tests, 296 u8 *strings, u64 *data) 297 { 298 struct efx_channel *channel; 299 unsigned int n = 0, i; 300 enum efx_loopback_mode mode; 301 302 efx_fill_test(n++, strings, data, &tests->phy_alive, 303 "phy", 0, "alive", NULL); 304 efx_fill_test(n++, strings, data, &tests->nvram, 305 "core", 0, "nvram", NULL); 306 efx_fill_test(n++, strings, data, &tests->interrupt, 307 "core", 0, "interrupt", NULL); 308 309 /* Event queues */ 310 efx_for_each_channel(channel, efx) { 311 efx_fill_test(n++, strings, data, 312 &tests->eventq_dma[channel->channel], 313 EFX_CHANNEL_NAME(channel), 314 "eventq.dma", NULL); 315 efx_fill_test(n++, strings, data, 316 &tests->eventq_int[channel->channel], 317 EFX_CHANNEL_NAME(channel), 318 "eventq.int", NULL); 319 } 320 321 efx_fill_test(n++, strings, data, &tests->memory, 322 "core", 0, "memory", NULL); 323 efx_fill_test(n++, strings, data, &tests->registers, 324 "core", 0, "registers", NULL); 325 326 if (efx->phy_op->run_tests != NULL) { 327 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL); 328 329 for (i = 0; true; ++i) { 330 const char *name; 331 332 EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS); 333 name = efx->phy_op->test_name(efx, i); 334 if (name == NULL) 335 break; 336 337 efx_fill_test(n++, strings, data, &tests->phy_ext[i], 338 "phy", 0, name, NULL); 339 } 340 } 341 342 /* Loopback tests */ 343 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) { 344 if (!(efx->loopback_modes & (1 << mode))) 345 continue; 346 n = efx_fill_loopback_test(efx, 347 &tests->loopback[mode], mode, n, 348 strings, data); 349 } 350 351 return n; 352 } 353 354 static int efx_ethtool_get_sset_count(struct net_device *net_dev, 355 int string_set) 356 { 357 struct efx_nic *efx = netdev_priv(net_dev); 358 359 switch (string_set) { 360 case ETH_SS_STATS: 361 return efx->type->describe_stats(efx, NULL) + 362 EFX_ETHTOOL_SW_STAT_COUNT + 363 efx_ptp_describe_stats(efx, NULL); 364 case ETH_SS_TEST: 365 return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL); 366 default: 367 return -EINVAL; 368 } 369 } 370 371 static void efx_ethtool_get_strings(struct net_device *net_dev, 372 u32 string_set, u8 *strings) 373 { 374 struct efx_nic *efx = netdev_priv(net_dev); 375 int i; 376 377 switch (string_set) { 378 case ETH_SS_STATS: 379 strings += (efx->type->describe_stats(efx, strings) * 380 ETH_GSTRING_LEN); 381 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) 382 strlcpy(strings + i * ETH_GSTRING_LEN, 383 efx_sw_stat_desc[i].name, ETH_GSTRING_LEN); 384 strings += EFX_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN; 385 efx_ptp_describe_stats(efx, strings); 386 break; 387 case ETH_SS_TEST: 388 efx_ethtool_fill_self_tests(efx, NULL, strings, NULL); 389 break; 390 default: 391 /* No other string sets */ 392 break; 393 } 394 } 395 396 static void efx_ethtool_get_stats(struct net_device *net_dev, 397 struct ethtool_stats *stats, 398 u64 *data) 399 { 400 struct efx_nic *efx = netdev_priv(net_dev); 401 const struct efx_sw_stat_desc *stat; 402 struct efx_channel *channel; 403 struct efx_tx_queue *tx_queue; 404 int i; 405 406 spin_lock_bh(&efx->stats_lock); 407 408 /* Get NIC statistics */ 409 data += efx->type->update_stats(efx, data, NULL); 410 411 /* Get software statistics */ 412 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) { 413 stat = &efx_sw_stat_desc[i]; 414 switch (stat->source) { 415 case EFX_ETHTOOL_STAT_SOURCE_nic: 416 data[i] = stat->get_stat((void *)efx + stat->offset); 417 break; 418 case EFX_ETHTOOL_STAT_SOURCE_channel: 419 data[i] = 0; 420 efx_for_each_channel(channel, efx) 421 data[i] += stat->get_stat((void *)channel + 422 stat->offset); 423 break; 424 case EFX_ETHTOOL_STAT_SOURCE_tx_queue: 425 data[i] = 0; 426 efx_for_each_channel(channel, efx) { 427 efx_for_each_channel_tx_queue(tx_queue, channel) 428 data[i] += 429 stat->get_stat((void *)tx_queue 430 + stat->offset); 431 } 432 break; 433 } 434 } 435 data += EFX_ETHTOOL_SW_STAT_COUNT; 436 437 spin_unlock_bh(&efx->stats_lock); 438 439 efx_ptp_update_stats(efx, data); 440 } 441 442 static void efx_ethtool_self_test(struct net_device *net_dev, 443 struct ethtool_test *test, u64 *data) 444 { 445 struct efx_nic *efx = netdev_priv(net_dev); 446 struct efx_self_tests *efx_tests; 447 int already_up; 448 int rc = -ENOMEM; 449 450 efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL); 451 if (!efx_tests) 452 goto fail; 453 454 if (efx->state != STATE_READY) { 455 rc = -EIO; 456 goto fail1; 457 } 458 459 netif_info(efx, drv, efx->net_dev, "starting %sline testing\n", 460 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on"); 461 462 /* We need rx buffers and interrupts. */ 463 already_up = (efx->net_dev->flags & IFF_UP); 464 if (!already_up) { 465 rc = dev_open(efx->net_dev); 466 if (rc) { 467 netif_err(efx, drv, efx->net_dev, 468 "failed opening device.\n"); 469 goto fail1; 470 } 471 } 472 473 rc = efx_selftest(efx, efx_tests, test->flags); 474 475 if (!already_up) 476 dev_close(efx->net_dev); 477 478 netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n", 479 rc == 0 ? "passed" : "failed", 480 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on"); 481 482 fail1: 483 /* Fill ethtool results structures */ 484 efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data); 485 kfree(efx_tests); 486 fail: 487 if (rc) 488 test->flags |= ETH_TEST_FL_FAILED; 489 } 490 491 /* Restart autonegotiation */ 492 static int efx_ethtool_nway_reset(struct net_device *net_dev) 493 { 494 struct efx_nic *efx = netdev_priv(net_dev); 495 496 return mdio45_nway_restart(&efx->mdio); 497 } 498 499 /* 500 * Each channel has a single IRQ and moderation timer, started by any 501 * completion (or other event). Unless the module parameter 502 * separate_tx_channels is set, IRQs and moderation are therefore 503 * shared between RX and TX completions. In this case, when RX IRQ 504 * moderation is explicitly changed then TX IRQ moderation is 505 * automatically changed too, but otherwise we fail if the two values 506 * are requested to be different. 507 * 508 * The hardware does not support a limit on the number of completions 509 * before an IRQ, so we do not use the max_frames fields. We should 510 * report and require that max_frames == (usecs != 0), but this would 511 * invalidate existing user documentation. 512 * 513 * The hardware does not have distinct settings for interrupt 514 * moderation while the previous IRQ is being handled, so we should 515 * not use the 'irq' fields. However, an earlier developer 516 * misunderstood the meaning of the 'irq' fields and the driver did 517 * not support the standard fields. To avoid invalidating existing 518 * user documentation, we report and accept changes through either the 519 * standard or 'irq' fields. If both are changed at the same time, we 520 * prefer the standard field. 521 * 522 * We implement adaptive IRQ moderation, but use a different algorithm 523 * from that assumed in the definition of struct ethtool_coalesce. 524 * Therefore we do not use any of the adaptive moderation parameters 525 * in it. 526 */ 527 528 static int efx_ethtool_get_coalesce(struct net_device *net_dev, 529 struct ethtool_coalesce *coalesce) 530 { 531 struct efx_nic *efx = netdev_priv(net_dev); 532 unsigned int tx_usecs, rx_usecs; 533 bool rx_adaptive; 534 535 efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive); 536 537 coalesce->tx_coalesce_usecs = tx_usecs; 538 coalesce->tx_coalesce_usecs_irq = tx_usecs; 539 coalesce->rx_coalesce_usecs = rx_usecs; 540 coalesce->rx_coalesce_usecs_irq = rx_usecs; 541 coalesce->use_adaptive_rx_coalesce = rx_adaptive; 542 543 return 0; 544 } 545 546 static int efx_ethtool_set_coalesce(struct net_device *net_dev, 547 struct ethtool_coalesce *coalesce) 548 { 549 struct efx_nic *efx = netdev_priv(net_dev); 550 struct efx_channel *channel; 551 unsigned int tx_usecs, rx_usecs; 552 bool adaptive, rx_may_override_tx; 553 int rc; 554 555 if (coalesce->use_adaptive_tx_coalesce) 556 return -EINVAL; 557 558 efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive); 559 560 if (coalesce->rx_coalesce_usecs != rx_usecs) 561 rx_usecs = coalesce->rx_coalesce_usecs; 562 else 563 rx_usecs = coalesce->rx_coalesce_usecs_irq; 564 565 adaptive = coalesce->use_adaptive_rx_coalesce; 566 567 /* If channels are shared, TX IRQ moderation can be quietly 568 * overridden unless it is changed from its old value. 569 */ 570 rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs && 571 coalesce->tx_coalesce_usecs_irq == tx_usecs); 572 if (coalesce->tx_coalesce_usecs != tx_usecs) 573 tx_usecs = coalesce->tx_coalesce_usecs; 574 else 575 tx_usecs = coalesce->tx_coalesce_usecs_irq; 576 577 rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive, 578 rx_may_override_tx); 579 if (rc != 0) 580 return rc; 581 582 efx_for_each_channel(channel, efx) 583 efx->type->push_irq_moderation(channel); 584 585 return 0; 586 } 587 588 static void efx_ethtool_get_ringparam(struct net_device *net_dev, 589 struct ethtool_ringparam *ring) 590 { 591 struct efx_nic *efx = netdev_priv(net_dev); 592 593 ring->rx_max_pending = EFX_MAX_DMAQ_SIZE; 594 ring->tx_max_pending = EFX_TXQ_MAX_ENT(efx); 595 ring->rx_pending = efx->rxq_entries; 596 ring->tx_pending = efx->txq_entries; 597 } 598 599 static int efx_ethtool_set_ringparam(struct net_device *net_dev, 600 struct ethtool_ringparam *ring) 601 { 602 struct efx_nic *efx = netdev_priv(net_dev); 603 u32 txq_entries; 604 605 if (ring->rx_mini_pending || ring->rx_jumbo_pending || 606 ring->rx_pending > EFX_MAX_DMAQ_SIZE || 607 ring->tx_pending > EFX_TXQ_MAX_ENT(efx)) 608 return -EINVAL; 609 610 if (ring->rx_pending < EFX_RXQ_MIN_ENT) { 611 netif_err(efx, drv, efx->net_dev, 612 "RX queues cannot be smaller than %u\n", 613 EFX_RXQ_MIN_ENT); 614 return -EINVAL; 615 } 616 617 txq_entries = max(ring->tx_pending, EFX_TXQ_MIN_ENT(efx)); 618 if (txq_entries != ring->tx_pending) 619 netif_warn(efx, drv, efx->net_dev, 620 "increasing TX queue size to minimum of %u\n", 621 txq_entries); 622 623 return efx_realloc_channels(efx, ring->rx_pending, txq_entries); 624 } 625 626 static int efx_ethtool_set_pauseparam(struct net_device *net_dev, 627 struct ethtool_pauseparam *pause) 628 { 629 struct efx_nic *efx = netdev_priv(net_dev); 630 u8 wanted_fc, old_fc; 631 u32 old_adv; 632 int rc = 0; 633 634 mutex_lock(&efx->mac_lock); 635 636 wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) | 637 (pause->tx_pause ? EFX_FC_TX : 0) | 638 (pause->autoneg ? EFX_FC_AUTO : 0)); 639 640 if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) { 641 netif_dbg(efx, drv, efx->net_dev, 642 "Flow control unsupported: tx ON rx OFF\n"); 643 rc = -EINVAL; 644 goto out; 645 } 646 647 if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) { 648 netif_dbg(efx, drv, efx->net_dev, 649 "Autonegotiation is disabled\n"); 650 rc = -EINVAL; 651 goto out; 652 } 653 654 /* Hook for Falcon bug 11482 workaround */ 655 if (efx->type->prepare_enable_fc_tx && 656 (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX)) 657 efx->type->prepare_enable_fc_tx(efx); 658 659 old_adv = efx->link_advertising; 660 old_fc = efx->wanted_fc; 661 efx_link_set_wanted_fc(efx, wanted_fc); 662 if (efx->link_advertising != old_adv || 663 (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) { 664 rc = efx->phy_op->reconfigure(efx); 665 if (rc) { 666 netif_err(efx, drv, efx->net_dev, 667 "Unable to advertise requested flow " 668 "control setting\n"); 669 goto out; 670 } 671 } 672 673 /* Reconfigure the MAC. The PHY *may* generate a link state change event 674 * if the user just changed the advertised capabilities, but there's no 675 * harm doing this twice */ 676 efx->type->reconfigure_mac(efx); 677 678 out: 679 mutex_unlock(&efx->mac_lock); 680 681 return rc; 682 } 683 684 static void efx_ethtool_get_pauseparam(struct net_device *net_dev, 685 struct ethtool_pauseparam *pause) 686 { 687 struct efx_nic *efx = netdev_priv(net_dev); 688 689 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX); 690 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX); 691 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO); 692 } 693 694 695 static void efx_ethtool_get_wol(struct net_device *net_dev, 696 struct ethtool_wolinfo *wol) 697 { 698 struct efx_nic *efx = netdev_priv(net_dev); 699 return efx->type->get_wol(efx, wol); 700 } 701 702 703 static int efx_ethtool_set_wol(struct net_device *net_dev, 704 struct ethtool_wolinfo *wol) 705 { 706 struct efx_nic *efx = netdev_priv(net_dev); 707 return efx->type->set_wol(efx, wol->wolopts); 708 } 709 710 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags) 711 { 712 struct efx_nic *efx = netdev_priv(net_dev); 713 int rc; 714 715 rc = efx->type->map_reset_flags(flags); 716 if (rc < 0) 717 return rc; 718 719 return efx_reset(efx, rc); 720 } 721 722 /* MAC address mask including only I/G bit */ 723 static const u8 mac_addr_ig_mask[ETH_ALEN] = { 0x01, 0, 0, 0, 0, 0 }; 724 725 #define IP4_ADDR_FULL_MASK ((__force __be32)~0) 726 #define PORT_FULL_MASK ((__force __be16)~0) 727 #define ETHER_TYPE_FULL_MASK ((__force __be16)~0) 728 729 static int efx_ethtool_get_class_rule(struct efx_nic *efx, 730 struct ethtool_rx_flow_spec *rule) 731 { 732 struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec; 733 struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec; 734 struct ethhdr *mac_entry = &rule->h_u.ether_spec; 735 struct ethhdr *mac_mask = &rule->m_u.ether_spec; 736 struct efx_filter_spec spec; 737 int rc; 738 739 rc = efx_filter_get_filter_safe(efx, EFX_FILTER_PRI_MANUAL, 740 rule->location, &spec); 741 if (rc) 742 return rc; 743 744 if (spec.dmaq_id == EFX_FILTER_RX_DMAQ_ID_DROP) 745 rule->ring_cookie = RX_CLS_FLOW_DISC; 746 else 747 rule->ring_cookie = spec.dmaq_id; 748 749 if ((spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) && 750 spec.ether_type == htons(ETH_P_IP) && 751 (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) && 752 (spec.ip_proto == IPPROTO_TCP || spec.ip_proto == IPPROTO_UDP) && 753 !(spec.match_flags & 754 ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID | 755 EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST | 756 EFX_FILTER_MATCH_IP_PROTO | 757 EFX_FILTER_MATCH_LOC_PORT | EFX_FILTER_MATCH_REM_PORT))) { 758 rule->flow_type = ((spec.ip_proto == IPPROTO_TCP) ? 759 TCP_V4_FLOW : UDP_V4_FLOW); 760 if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) { 761 ip_entry->ip4dst = spec.loc_host[0]; 762 ip_mask->ip4dst = IP4_ADDR_FULL_MASK; 763 } 764 if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) { 765 ip_entry->ip4src = spec.rem_host[0]; 766 ip_mask->ip4src = IP4_ADDR_FULL_MASK; 767 } 768 if (spec.match_flags & EFX_FILTER_MATCH_LOC_PORT) { 769 ip_entry->pdst = spec.loc_port; 770 ip_mask->pdst = PORT_FULL_MASK; 771 } 772 if (spec.match_flags & EFX_FILTER_MATCH_REM_PORT) { 773 ip_entry->psrc = spec.rem_port; 774 ip_mask->psrc = PORT_FULL_MASK; 775 } 776 } else if (!(spec.match_flags & 777 ~(EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG | 778 EFX_FILTER_MATCH_REM_MAC | EFX_FILTER_MATCH_ETHER_TYPE | 779 EFX_FILTER_MATCH_OUTER_VID))) { 780 rule->flow_type = ETHER_FLOW; 781 if (spec.match_flags & 782 (EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG)) { 783 memcpy(mac_entry->h_dest, spec.loc_mac, ETH_ALEN); 784 if (spec.match_flags & EFX_FILTER_MATCH_LOC_MAC) 785 memset(mac_mask->h_dest, ~0, ETH_ALEN); 786 else 787 memcpy(mac_mask->h_dest, mac_addr_ig_mask, 788 ETH_ALEN); 789 } 790 if (spec.match_flags & EFX_FILTER_MATCH_REM_MAC) { 791 memcpy(mac_entry->h_source, spec.rem_mac, ETH_ALEN); 792 memset(mac_mask->h_source, ~0, ETH_ALEN); 793 } 794 if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) { 795 mac_entry->h_proto = spec.ether_type; 796 mac_mask->h_proto = ETHER_TYPE_FULL_MASK; 797 } 798 } else { 799 /* The above should handle all filters that we insert */ 800 WARN_ON(1); 801 return -EINVAL; 802 } 803 804 if (spec.match_flags & EFX_FILTER_MATCH_OUTER_VID) { 805 rule->flow_type |= FLOW_EXT; 806 rule->h_ext.vlan_tci = spec.outer_vid; 807 rule->m_ext.vlan_tci = htons(0xfff); 808 } 809 810 return rc; 811 } 812 813 static int 814 efx_ethtool_get_rxnfc(struct net_device *net_dev, 815 struct ethtool_rxnfc *info, u32 *rule_locs) 816 { 817 struct efx_nic *efx = netdev_priv(net_dev); 818 819 switch (info->cmd) { 820 case ETHTOOL_GRXRINGS: 821 info->data = efx->n_rx_channels; 822 return 0; 823 824 case ETHTOOL_GRXFH: { 825 unsigned min_revision = 0; 826 827 info->data = 0; 828 switch (info->flow_type) { 829 case TCP_V4_FLOW: 830 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 831 /* fall through */ 832 case UDP_V4_FLOW: 833 case SCTP_V4_FLOW: 834 case AH_ESP_V4_FLOW: 835 case IPV4_FLOW: 836 info->data |= RXH_IP_SRC | RXH_IP_DST; 837 min_revision = EFX_REV_FALCON_B0; 838 break; 839 case TCP_V6_FLOW: 840 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 841 /* fall through */ 842 case UDP_V6_FLOW: 843 case SCTP_V6_FLOW: 844 case AH_ESP_V6_FLOW: 845 case IPV6_FLOW: 846 info->data |= RXH_IP_SRC | RXH_IP_DST; 847 min_revision = EFX_REV_SIENA_A0; 848 break; 849 default: 850 break; 851 } 852 if (efx_nic_rev(efx) < min_revision) 853 info->data = 0; 854 return 0; 855 } 856 857 case ETHTOOL_GRXCLSRLCNT: 858 info->data = efx_filter_get_rx_id_limit(efx); 859 if (info->data == 0) 860 return -EOPNOTSUPP; 861 info->data |= RX_CLS_LOC_SPECIAL; 862 info->rule_cnt = 863 efx_filter_count_rx_used(efx, EFX_FILTER_PRI_MANUAL); 864 return 0; 865 866 case ETHTOOL_GRXCLSRULE: 867 if (efx_filter_get_rx_id_limit(efx) == 0) 868 return -EOPNOTSUPP; 869 return efx_ethtool_get_class_rule(efx, &info->fs); 870 871 case ETHTOOL_GRXCLSRLALL: { 872 s32 rc; 873 info->data = efx_filter_get_rx_id_limit(efx); 874 if (info->data == 0) 875 return -EOPNOTSUPP; 876 rc = efx_filter_get_rx_ids(efx, EFX_FILTER_PRI_MANUAL, 877 rule_locs, info->rule_cnt); 878 if (rc < 0) 879 return rc; 880 info->rule_cnt = rc; 881 return 0; 882 } 883 884 default: 885 return -EOPNOTSUPP; 886 } 887 } 888 889 static int efx_ethtool_set_class_rule(struct efx_nic *efx, 890 struct ethtool_rx_flow_spec *rule) 891 { 892 struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec; 893 struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec; 894 struct ethhdr *mac_entry = &rule->h_u.ether_spec; 895 struct ethhdr *mac_mask = &rule->m_u.ether_spec; 896 struct efx_filter_spec spec; 897 int rc; 898 899 /* Check that user wants us to choose the location */ 900 if (rule->location != RX_CLS_LOC_ANY) 901 return -EINVAL; 902 903 /* Range-check ring_cookie */ 904 if (rule->ring_cookie >= efx->n_rx_channels && 905 rule->ring_cookie != RX_CLS_FLOW_DISC) 906 return -EINVAL; 907 908 /* Check for unsupported extensions */ 909 if ((rule->flow_type & FLOW_EXT) && 910 (rule->m_ext.vlan_etype || rule->m_ext.data[0] || 911 rule->m_ext.data[1])) 912 return -EINVAL; 913 914 efx_filter_init_rx(&spec, EFX_FILTER_PRI_MANUAL, 915 efx->rx_scatter ? EFX_FILTER_FLAG_RX_SCATTER : 0, 916 (rule->ring_cookie == RX_CLS_FLOW_DISC) ? 917 EFX_FILTER_RX_DMAQ_ID_DROP : rule->ring_cookie); 918 919 switch (rule->flow_type & ~FLOW_EXT) { 920 case TCP_V4_FLOW: 921 case UDP_V4_FLOW: 922 spec.match_flags = (EFX_FILTER_MATCH_ETHER_TYPE | 923 EFX_FILTER_MATCH_IP_PROTO); 924 spec.ether_type = htons(ETH_P_IP); 925 spec.ip_proto = ((rule->flow_type & ~FLOW_EXT) == TCP_V4_FLOW ? 926 IPPROTO_TCP : IPPROTO_UDP); 927 if (ip_mask->ip4dst) { 928 if (ip_mask->ip4dst != IP4_ADDR_FULL_MASK) 929 return -EINVAL; 930 spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST; 931 spec.loc_host[0] = ip_entry->ip4dst; 932 } 933 if (ip_mask->ip4src) { 934 if (ip_mask->ip4src != IP4_ADDR_FULL_MASK) 935 return -EINVAL; 936 spec.match_flags |= EFX_FILTER_MATCH_REM_HOST; 937 spec.rem_host[0] = ip_entry->ip4src; 938 } 939 if (ip_mask->pdst) { 940 if (ip_mask->pdst != PORT_FULL_MASK) 941 return -EINVAL; 942 spec.match_flags |= EFX_FILTER_MATCH_LOC_PORT; 943 spec.loc_port = ip_entry->pdst; 944 } 945 if (ip_mask->psrc) { 946 if (ip_mask->psrc != PORT_FULL_MASK) 947 return -EINVAL; 948 spec.match_flags |= EFX_FILTER_MATCH_REM_PORT; 949 spec.rem_port = ip_entry->psrc; 950 } 951 if (ip_mask->tos) 952 return -EINVAL; 953 break; 954 955 case ETHER_FLOW: 956 if (!is_zero_ether_addr(mac_mask->h_dest)) { 957 if (ether_addr_equal(mac_mask->h_dest, 958 mac_addr_ig_mask)) 959 spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC_IG; 960 else if (is_broadcast_ether_addr(mac_mask->h_dest)) 961 spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC; 962 else 963 return -EINVAL; 964 memcpy(spec.loc_mac, mac_entry->h_dest, ETH_ALEN); 965 } 966 if (!is_zero_ether_addr(mac_mask->h_source)) { 967 if (!is_broadcast_ether_addr(mac_mask->h_source)) 968 return -EINVAL; 969 spec.match_flags |= EFX_FILTER_MATCH_REM_MAC; 970 memcpy(spec.rem_mac, mac_entry->h_source, ETH_ALEN); 971 } 972 if (mac_mask->h_proto) { 973 if (mac_mask->h_proto != ETHER_TYPE_FULL_MASK) 974 return -EINVAL; 975 spec.match_flags |= EFX_FILTER_MATCH_ETHER_TYPE; 976 spec.ether_type = mac_entry->h_proto; 977 } 978 break; 979 980 default: 981 return -EINVAL; 982 } 983 984 if ((rule->flow_type & FLOW_EXT) && rule->m_ext.vlan_tci) { 985 if (rule->m_ext.vlan_tci != htons(0xfff)) 986 return -EINVAL; 987 spec.match_flags |= EFX_FILTER_MATCH_OUTER_VID; 988 spec.outer_vid = rule->h_ext.vlan_tci; 989 } 990 991 rc = efx_filter_insert_filter(efx, &spec, true); 992 if (rc < 0) 993 return rc; 994 995 rule->location = rc; 996 return 0; 997 } 998 999 static int efx_ethtool_set_rxnfc(struct net_device *net_dev, 1000 struct ethtool_rxnfc *info) 1001 { 1002 struct efx_nic *efx = netdev_priv(net_dev); 1003 1004 if (efx_filter_get_rx_id_limit(efx) == 0) 1005 return -EOPNOTSUPP; 1006 1007 switch (info->cmd) { 1008 case ETHTOOL_SRXCLSRLINS: 1009 return efx_ethtool_set_class_rule(efx, &info->fs); 1010 1011 case ETHTOOL_SRXCLSRLDEL: 1012 return efx_filter_remove_id_safe(efx, EFX_FILTER_PRI_MANUAL, 1013 info->fs.location); 1014 1015 default: 1016 return -EOPNOTSUPP; 1017 } 1018 } 1019 1020 static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev) 1021 { 1022 struct efx_nic *efx = netdev_priv(net_dev); 1023 1024 return ((efx_nic_rev(efx) < EFX_REV_FALCON_B0 || 1025 efx->n_rx_channels == 1) ? 1026 0 : ARRAY_SIZE(efx->rx_indir_table)); 1027 } 1028 1029 static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev, u32 *indir) 1030 { 1031 struct efx_nic *efx = netdev_priv(net_dev); 1032 1033 memcpy(indir, efx->rx_indir_table, sizeof(efx->rx_indir_table)); 1034 return 0; 1035 } 1036 1037 static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev, 1038 const u32 *indir) 1039 { 1040 struct efx_nic *efx = netdev_priv(net_dev); 1041 1042 memcpy(efx->rx_indir_table, indir, sizeof(efx->rx_indir_table)); 1043 efx->type->rx_push_rss_config(efx); 1044 return 0; 1045 } 1046 1047 static int efx_ethtool_get_ts_info(struct net_device *net_dev, 1048 struct ethtool_ts_info *ts_info) 1049 { 1050 struct efx_nic *efx = netdev_priv(net_dev); 1051 1052 /* Software capabilities */ 1053 ts_info->so_timestamping = (SOF_TIMESTAMPING_RX_SOFTWARE | 1054 SOF_TIMESTAMPING_SOFTWARE); 1055 ts_info->phc_index = -1; 1056 1057 efx_ptp_get_ts_info(efx, ts_info); 1058 return 0; 1059 } 1060 1061 static int efx_ethtool_get_module_eeprom(struct net_device *net_dev, 1062 struct ethtool_eeprom *ee, 1063 u8 *data) 1064 { 1065 struct efx_nic *efx = netdev_priv(net_dev); 1066 int ret; 1067 1068 if (!efx->phy_op || !efx->phy_op->get_module_eeprom) 1069 return -EOPNOTSUPP; 1070 1071 mutex_lock(&efx->mac_lock); 1072 ret = efx->phy_op->get_module_eeprom(efx, ee, data); 1073 mutex_unlock(&efx->mac_lock); 1074 1075 return ret; 1076 } 1077 1078 static int efx_ethtool_get_module_info(struct net_device *net_dev, 1079 struct ethtool_modinfo *modinfo) 1080 { 1081 struct efx_nic *efx = netdev_priv(net_dev); 1082 int ret; 1083 1084 if (!efx->phy_op || !efx->phy_op->get_module_info) 1085 return -EOPNOTSUPP; 1086 1087 mutex_lock(&efx->mac_lock); 1088 ret = efx->phy_op->get_module_info(efx, modinfo); 1089 mutex_unlock(&efx->mac_lock); 1090 1091 return ret; 1092 } 1093 1094 const struct ethtool_ops efx_ethtool_ops = { 1095 .get_settings = efx_ethtool_get_settings, 1096 .set_settings = efx_ethtool_set_settings, 1097 .get_drvinfo = efx_ethtool_get_drvinfo, 1098 .get_regs_len = efx_ethtool_get_regs_len, 1099 .get_regs = efx_ethtool_get_regs, 1100 .get_msglevel = efx_ethtool_get_msglevel, 1101 .set_msglevel = efx_ethtool_set_msglevel, 1102 .nway_reset = efx_ethtool_nway_reset, 1103 .get_link = ethtool_op_get_link, 1104 .get_coalesce = efx_ethtool_get_coalesce, 1105 .set_coalesce = efx_ethtool_set_coalesce, 1106 .get_ringparam = efx_ethtool_get_ringparam, 1107 .set_ringparam = efx_ethtool_set_ringparam, 1108 .get_pauseparam = efx_ethtool_get_pauseparam, 1109 .set_pauseparam = efx_ethtool_set_pauseparam, 1110 .get_sset_count = efx_ethtool_get_sset_count, 1111 .self_test = efx_ethtool_self_test, 1112 .get_strings = efx_ethtool_get_strings, 1113 .set_phys_id = efx_ethtool_phys_id, 1114 .get_ethtool_stats = efx_ethtool_get_stats, 1115 .get_wol = efx_ethtool_get_wol, 1116 .set_wol = efx_ethtool_set_wol, 1117 .reset = efx_ethtool_reset, 1118 .get_rxnfc = efx_ethtool_get_rxnfc, 1119 .set_rxnfc = efx_ethtool_set_rxnfc, 1120 .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size, 1121 .get_rxfh_indir = efx_ethtool_get_rxfh_indir, 1122 .set_rxfh_indir = efx_ethtool_set_rxfh_indir, 1123 .get_ts_info = efx_ethtool_get_ts_info, 1124 .get_module_info = efx_ethtool_get_module_info, 1125 .get_module_eeprom = efx_ethtool_get_module_eeprom, 1126 }; 1127