drivers/net/sfc/ethtool.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2008 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 "net_driver.h"
  15 #include "selftest.h"
  16 #include "efx.h"
  17 #include "ethtool.h"
  18 #include "falcon.h"
  19 #include "gmii.h"
  20 #include "mac.h"
  21
  22 const char *efx_loopback_mode_names[] = {
  23         [LOOPBACK_NONE]         = "NONE",
  24         [LOOPBACK_MAC]          = "MAC",
  25         [LOOPBACK_XGMII]        = "XGMII",
  26         [LOOPBACK_XGXS]         = "XGXS",
  27         [LOOPBACK_XAUI]         = "XAUI",
  28         [LOOPBACK_PHY]          = "PHY",
  29         [LOOPBACK_PHYXS]        = "PHY(XS)",
  30         [LOOPBACK_PCS]          = "PHY(PCS)",
  31         [LOOPBACK_PMAPMD]       = "PHY(PMAPMD)",
  32         [LOOPBACK_NETWORK]      = "NETWORK",
  33 };
  34
  35 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable);
  36
  37 struct ethtool_string {
  38         char name[ETH_GSTRING_LEN];
  39 };
  40
  41 struct efx_ethtool_stat {
  42         const char *name;
  43         enum {
  44                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  45                 EFX_ETHTOOL_STAT_SOURCE_nic,
  46                 EFX_ETHTOOL_STAT_SOURCE_channel
  47         } source;
  48         unsigned offset;
  49         u64(*get_stat) (void *field); /* Reader function */
  50 };
  51
  52 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  53 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  54                                 get_stat_function) {                    \
  55         .name = #stat_name,                                             \
  56         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  57         .offset = ((((field_type *) 0) ==                               \
  58                       &((struct efx_##source_name *)0)->field) ?        \
  59                     offsetof(struct efx_##source_name, field) :         \
  60                     offsetof(struct efx_##source_name, field)),         \
  61         .get_stat = get_stat_function,                                  \
  62 }
  63
  64 static u64 efx_get_uint_stat(void *field)
  65 {
  66         return *(unsigned int *)field;
  67 }
  68
  69 static u64 efx_get_ulong_stat(void *field)
  70 {
  71         return *(unsigned long *)field;
  72 }
  73
  74 static u64 efx_get_u64_stat(void *field)
  75 {
  76         return *(u64 *) field;
  77 }
  78
  79 static u64 efx_get_atomic_stat(void *field)
  80 {
  81         return atomic_read((atomic_t *) field);
  82 }
  83
  84 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  85         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  86                           unsigned long, efx_get_ulong_stat)
  87
  88 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  89         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  90                           u64, efx_get_u64_stat)
  91
  92 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  93         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  94                          unsigned int, efx_get_uint_stat)
  95
  96 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  97         EFX_ETHTOOL_STAT(field, nic, field,                     \
  98                          atomic_t, efx_get_atomic_stat)
  99
 100 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
 101         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
 102                          unsigned int, efx_get_uint_stat)
 103
 104 static struct efx_ethtool_stat efx_ethtool_stats[] = {
 105         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
 106         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
 107         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 132         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 133         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 134         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 135         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 136         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 159         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 160         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 161         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 162         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 163         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 164         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 165         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 166         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 167         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 168         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 169         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 170         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 171 };
 172
 173 /* Number of ethtool statistics */
 174 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 175
 176 /**************************************************************************
 177  *
 178  * Ethtool operations
 179  *
 180  **************************************************************************
 181  */
 182
 183 /* Identify device by flashing LEDs */
 184 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 seconds)
 185 {
 186         struct efx_nic *efx = netdev_priv(net_dev);
 187
 188         efx->board_info.blink(efx, 1);
 189         schedule_timeout_interruptible(seconds * HZ);
 190         efx->board_info.blink(efx, 0);
 191         return 0;
 192 }
 193
 194 /* This must be called with rtnl_lock held. */
 195 int efx_ethtool_get_settings(struct net_device *net_dev,
 196                              struct ethtool_cmd *ecmd)
 197 {
 198         struct efx_nic *efx = netdev_priv(net_dev);
 199         int rc;
 200
 201         mutex_lock(&efx->mac_lock);
 202         rc = falcon_xmac_get_settings(efx, ecmd);
 203         mutex_unlock(&efx->mac_lock);
 204
 205         return rc;
 206 }
 207
 208 /* This must be called with rtnl_lock held. */
 209 int efx_ethtool_set_settings(struct net_device *net_dev,
 210                              struct ethtool_cmd *ecmd)
 211 {
 212         struct efx_nic *efx = netdev_priv(net_dev);
 213         int rc;
 214
 215         mutex_lock(&efx->mac_lock);
 216         rc = falcon_xmac_set_settings(efx, ecmd);
 217         mutex_unlock(&efx->mac_lock);
 218         if (!rc)
 219                 efx_reconfigure_port(efx);
 220
 221         return rc;
 222 }
 223
 224 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 225                                     struct ethtool_drvinfo *info)
 226 {
 227         struct efx_nic *efx = netdev_priv(net_dev);
 228
 229         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 230         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 231         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 232 }
 233
 234 /**
 235  * efx_fill_test - fill in an individual self-test entry
 236  * @test_index:         Index of the test
 237  * @strings:            Ethtool strings, or %NULL
 238  * @data:               Ethtool test results, or %NULL
 239  * @test:               Pointer to test result (used only if data != %NULL)
 240  * @unit_format:        Unit name format (e.g. "channel\%d")
 241  * @unit_id:            Unit id (e.g. 0 for "channel0")
 242  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 243  * @test_id:            Test id (e.g. "PHY" for "loopback.PHY.tx_sent")
 244  *
 245  * Fill in an individual self-test entry.
 246  */
 247 static void efx_fill_test(unsigned int test_index,
 248                           struct ethtool_string *strings, u64 *data,
 249                           int *test, const char *unit_format, int unit_id,
 250                           const char *test_format, const char *test_id)
 251 {
 252         struct ethtool_string unit_str, test_str;
 253
 254         /* Fill data value, if applicable */
 255         if (data)
 256                 data[test_index] = *test;
 257
 258         /* Fill string, if applicable */
 259         if (strings) {
 260                 snprintf(unit_str.name, sizeof(unit_str.name),
 261                          unit_format, unit_id);
 262                 snprintf(test_str.name, sizeof(test_str.name),
 263                          test_format, test_id);
 264                 snprintf(strings[test_index].name,
 265                          sizeof(strings[test_index].name),
 266                          "%-9s%-17s", unit_str.name, test_str.name);
 267         }
 268 }
 269
 270 #define EFX_PORT_NAME "port%d", 0
 271 #define EFX_CHANNEL_NAME(_channel) "channel%d", _channel->channel
 272 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 273 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 274 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 275         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
 276
 277 /**
 278  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 279  * @efx:                Efx NIC
 280  * @lb_tests:           Efx loopback self-test results structure
 281  * @mode:               Loopback test mode
 282  * @test_index:         Starting index of the test
 283  * @strings:            Ethtool strings, or %NULL
 284  * @data:               Ethtool test results, or %NULL
 285  */
 286 static int efx_fill_loopback_test(struct efx_nic *efx,
 287                                   struct efx_loopback_self_tests *lb_tests,
 288                                   enum efx_loopback_mode mode,
 289                                   unsigned int test_index,
 290                                   struct ethtool_string *strings, u64 *data)
 291 {
 292         struct efx_tx_queue *tx_queue;
 293
 294         efx_for_each_tx_queue(tx_queue, efx) {
 295                 efx_fill_test(test_index++, strings, data,
 296                               &lb_tests->tx_sent[tx_queue->queue],
 297                               EFX_TX_QUEUE_NAME(tx_queue),
 298                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 299                 efx_fill_test(test_index++, strings, data,
 300                               &lb_tests->tx_done[tx_queue->queue],
 301                               EFX_TX_QUEUE_NAME(tx_queue),
 302                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 303         }
 304         efx_fill_test(test_index++, strings, data,
 305                       &lb_tests->rx_good,
 306                       EFX_PORT_NAME,
 307                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 308         efx_fill_test(test_index++, strings, data,
 309                       &lb_tests->rx_bad,
 310                       EFX_PORT_NAME,
 311                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 312
 313         return test_index;
 314 }
 315
 316 /**
 317  * efx_ethtool_fill_self_tests - get self-test details
 318  * @efx:                Efx NIC
 319  * @tests:              Efx self-test results structure, or %NULL
 320  * @strings:            Ethtool strings, or %NULL
 321  * @data:               Ethtool test results, or %NULL
 322  */
 323 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 324                                        struct efx_self_tests *tests,
 325                                        struct ethtool_string *strings,
 326                                        u64 *data)
 327 {
 328         struct efx_channel *channel;
 329         unsigned int n = 0;
 330         enum efx_loopback_mode mode;
 331
 332         /* Interrupt */
 333         efx_fill_test(n++, strings, data, &tests->interrupt,
 334                       "core", 0, "interrupt", NULL);
 335
 336         /* Event queues */
 337         efx_for_each_channel(channel, efx) {
 338                 efx_fill_test(n++, strings, data,
 339                               &tests->eventq_dma[channel->channel],
 340                               EFX_CHANNEL_NAME(channel),
 341                               "eventq.dma", NULL);
 342                 efx_fill_test(n++, strings, data,
 343                               &tests->eventq_int[channel->channel],
 344                               EFX_CHANNEL_NAME(channel),
 345                               "eventq.int", NULL);
 346                 efx_fill_test(n++, strings, data,
 347                               &tests->eventq_poll[channel->channel],
 348                               EFX_CHANNEL_NAME(channel),
 349                               "eventq.poll", NULL);
 350         }
 351
 352         /* PHY presence */
 353         efx_fill_test(n++, strings, data, &tests->phy_ok,
 354                       EFX_PORT_NAME, "phy_ok", NULL);
 355
 356         /* Loopback tests */
 357         efx_fill_test(n++, strings, data, &tests->loopback_speed,
 358                       EFX_PORT_NAME, "loopback.speed", NULL);
 359         efx_fill_test(n++, strings, data, &tests->loopback_full_duplex,
 360                       EFX_PORT_NAME, "loopback.full_duplex", NULL);
 361         for (mode = LOOPBACK_NONE; mode < LOOPBACK_TEST_MAX; mode++) {
 362                 if (!(efx->loopback_modes & (1 << mode)))
 363                         continue;
 364                 n = efx_fill_loopback_test(efx,
 365                                            &tests->loopback[mode], mode, n,
 366                                            strings, data);
 367         }
 368
 369         return n;
 370 }
 371
 372 static int efx_ethtool_get_stats_count(struct net_device *net_dev)
 373 {
 374         return EFX_ETHTOOL_NUM_STATS;
 375 }
 376
 377 static int efx_ethtool_self_test_count(struct net_device *net_dev)
 378 {
 379         struct efx_nic *efx = netdev_priv(net_dev);
 380
 381         return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
 382 }
 383
 384 static void efx_ethtool_get_strings(struct net_device *net_dev,
 385                                     u32 string_set, u8 *strings)
 386 {
 387         struct efx_nic *efx = netdev_priv(net_dev);
 388         struct ethtool_string *ethtool_strings =
 389                 (struct ethtool_string *)strings;
 390         int i;
 391
 392         switch (string_set) {
 393         case ETH_SS_STATS:
 394                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 395                         strncpy(ethtool_strings[i].name,
 396                                 efx_ethtool_stats[i].name,
 397                                 sizeof(ethtool_strings[i].name));
 398                 break;
 399         case ETH_SS_TEST:
 400                 efx_ethtool_fill_self_tests(efx, NULL,
 401                                             ethtool_strings, NULL);
 402                 break;
 403         default:
 404                 /* No other string sets */
 405                 break;
 406         }
 407 }
 408
 409 static void efx_ethtool_get_stats(struct net_device *net_dev,
 410                                   struct ethtool_stats *stats,
 411                                   u64 *data)
 412 {
 413         struct efx_nic *efx = netdev_priv(net_dev);
 414         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 415         struct efx_ethtool_stat *stat;
 416         struct efx_channel *channel;
 417         int i;
 418
 419         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 420
 421         /* Update MAC and NIC statistics */
 422         net_dev->get_stats(net_dev);
 423
 424         /* Fill detailed statistics buffer */
 425         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 426                 stat = &efx_ethtool_stats[i];
 427                 switch (stat->source) {
 428                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 429                         data[i] = stat->get_stat((void *)mac_stats +
 430                                                  stat->offset);
 431                         break;
 432                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 433                         data[i] = stat->get_stat((void *)efx + stat->offset);
 434                         break;
 435                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 436                         data[i] = 0;
 437                         efx_for_each_channel(channel, efx)
 438                                 data[i] += stat->get_stat((void *)channel +
 439                                                           stat->offset);
 440                         break;
 441                 }
 442         }
 443 }
 444
 445 static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
 446 {
 447         int rc;
 448
 449         /* Our TSO requires TX checksumming, so force TX checksumming
 450          * on when TSO is enabled.
 451          */
 452         if (enable) {
 453                 rc = efx_ethtool_set_tx_csum(net_dev, 1);
 454                 if (rc)
 455                         return rc;
 456         }
 457
 458         return ethtool_op_set_tso(net_dev, enable);
 459 }
 460
 461 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
 462 {
 463         struct efx_nic *efx = netdev_priv(net_dev);
 464         int rc;
 465
 466         rc = ethtool_op_set_tx_csum(net_dev, enable);
 467         if (rc)
 468                 return rc;
 469
 470         efx_flush_queues(efx);
 471
 472         /* Our TSO requires TX checksumming, so disable TSO when
 473          * checksumming is disabled
 474          */
 475         if (!enable) {
 476                 rc = efx_ethtool_set_tso(net_dev, 0);
 477                 if (rc)
 478                         return rc;
 479         }
 480
 481         return 0;
 482 }
 483
 484 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 485 {
 486         struct efx_nic *efx = netdev_priv(net_dev);
 487
 488         /* No way to stop the hardware doing the checks; we just
 489          * ignore the result.
 490          */
 491         efx->rx_checksum_enabled = (enable ? 1 : 0);
 492
 493         return 0;
 494 }
 495
 496 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 497 {
 498         struct efx_nic *efx = netdev_priv(net_dev);
 499
 500         return efx->rx_checksum_enabled;
 501 }
 502
 503 static void efx_ethtool_self_test(struct net_device *net_dev,
 504                                   struct ethtool_test *test, u64 *data)
 505 {
 506         struct efx_nic *efx = netdev_priv(net_dev);
 507         struct efx_self_tests efx_tests;
 508         int offline, already_up;
 509         int rc;
 510
 511         ASSERT_RTNL();
 512         if (efx->state != STATE_RUNNING) {
 513                 rc = -EIO;
 514                 goto fail1;
 515         }
 516
 517         /* We need rx buffers and interrupts. */
 518         already_up = (efx->net_dev->flags & IFF_UP);
 519         if (!already_up) {
 520                 rc = dev_open(efx->net_dev);
 521                 if (rc) {
 522                         EFX_ERR(efx, "failed opening device.\n");
 523                         goto fail2;
 524                 }
 525         }
 526
 527         memset(&efx_tests, 0, sizeof(efx_tests));
 528         offline = (test->flags & ETH_TEST_FL_OFFLINE);
 529
 530         /* Perform online self tests first */
 531         rc = efx_online_test(efx, &efx_tests);
 532         if (rc)
 533                 goto out;
 534
 535         /* Perform offline tests only if online tests passed */
 536         if (offline) {
 537                 /* Stop the kernel from sending packets during the test. */
 538                 efx_stop_queue(efx);
 539                 rc = efx_flush_queues(efx);
 540                 if (!rc)
 541                         rc = efx_offline_test(efx, &efx_tests,
 542                                               efx->loopback_modes);
 543                 efx_wake_queue(efx);
 544         }
 545
 546  out:
 547         if (!already_up)
 548                 dev_close(efx->net_dev);
 549
 550         EFX_LOG(efx, "%s all %sline self-tests\n",
 551                 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
 552
 553  fail2:
 554  fail1:
 555         /* Fill ethtool results structures */
 556         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 557         if (rc)
 558                 test->flags |= ETH_TEST_FL_FAILED;
 559 }
 560
 561 /* Restart autonegotiation */
 562 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 563 {
 564         struct efx_nic *efx = netdev_priv(net_dev);
 565
 566         return mii_nway_restart(&efx->mii);
 567 }
 568
 569 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 570 {
 571         struct efx_nic *efx = netdev_priv(net_dev);
 572
 573         return efx->link_up;
 574 }
 575
 576 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 577                                     struct ethtool_coalesce *coalesce)
 578 {
 579         struct efx_nic *efx = netdev_priv(net_dev);
 580         struct efx_tx_queue *tx_queue;
 581         struct efx_rx_queue *rx_queue;
 582         struct efx_channel *channel;
 583
 584         memset(coalesce, 0, sizeof(*coalesce));
 585
 586         /* Find lowest IRQ moderation across all used TX queues */
 587         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 588         efx_for_each_tx_queue(tx_queue, efx) {
 589                 channel = tx_queue->channel;
 590                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 591                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 592                                 coalesce->tx_coalesce_usecs_irq =
 593                                         channel->irq_moderation;
 594                         else
 595                                 coalesce->tx_coalesce_usecs_irq = 0;
 596                 }
 597         }
 598
 599         /* Find lowest IRQ moderation across all used RX queues */
 600         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
 601         efx_for_each_rx_queue(rx_queue, efx) {
 602                 channel = rx_queue->channel;
 603                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
 604                         coalesce->rx_coalesce_usecs_irq =
 605                                 channel->irq_moderation;
 606         }
 607
 608         return 0;
 609 }
 610
 611 /* Set coalescing parameters
 612  * The difficulties occur for shared channels
 613  */
 614 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 615                                     struct ethtool_coalesce *coalesce)
 616 {
 617         struct efx_nic *efx = netdev_priv(net_dev);
 618         struct efx_channel *channel;
 619         struct efx_tx_queue *tx_queue;
 620         unsigned tx_usecs, rx_usecs;
 621
 622         if (coalesce->use_adaptive_rx_coalesce ||
 623             coalesce->use_adaptive_tx_coalesce)
 624                 return -EOPNOTSUPP;
 625
 626         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 627                 EFX_ERR(efx, "invalid coalescing setting. "
 628                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 629                 return -EOPNOTSUPP;
 630         }
 631
 632         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 633         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 634
 635         /* If the channel is shared only allow RX parameters to be set */
 636         efx_for_each_tx_queue(tx_queue, efx) {
 637                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 638                     tx_usecs) {
 639                         EFX_ERR(efx, "Channel is shared. "
 640                                 "Only RX coalescing may be set\n");
 641                         return -EOPNOTSUPP;
 642                 }
 643         }
 644
 645         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
 646
 647         /* Reset channel to pick up new moderation value.  Note that
 648          * this may change the value of the irq_moderation field
 649          * (e.g. to allow for hardware timer granularity).
 650          */
 651         efx_for_each_channel(channel, efx)
 652                 falcon_set_int_moderation(channel);
 653
 654         return 0;
 655 }
 656
 657 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 658                                       struct ethtool_pauseparam *pause)
 659 {
 660         struct efx_nic *efx = netdev_priv(net_dev);
 661         enum efx_fc_type flow_control = efx->flow_control;
 662         int rc;
 663
 664         flow_control &= ~(EFX_FC_RX | EFX_FC_TX | EFX_FC_AUTO);
 665         flow_control |= pause->rx_pause ? EFX_FC_RX : 0;
 666         flow_control |= pause->tx_pause ? EFX_FC_TX : 0;
 667         flow_control |= pause->autoneg ? EFX_FC_AUTO : 0;
 668
 669         /* Try to push the pause parameters */
 670         mutex_lock(&efx->mac_lock);
 671         rc = falcon_xmac_set_pause(efx, flow_control);
 672         mutex_unlock(&efx->mac_lock);
 673
 674         if (!rc)
 675                 efx_reconfigure_port(efx);
 676
 677         return rc;
 678 }
 679
 680 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 681                                        struct ethtool_pauseparam *pause)
 682 {
 683         struct efx_nic *efx = netdev_priv(net_dev);
 684
 685         pause->rx_pause = (efx->flow_control & EFX_FC_RX) ? 1 : 0;
 686         pause->tx_pause = (efx->flow_control & EFX_FC_TX) ? 1 : 0;
 687         pause->autoneg = (efx->flow_control & EFX_FC_AUTO) ? 1 : 0;
 688 }
 689
 690
 691 struct ethtool_ops efx_ethtool_ops = {
 692         .get_settings           = efx_ethtool_get_settings,
 693         .set_settings           = efx_ethtool_set_settings,
 694         .get_drvinfo            = efx_ethtool_get_drvinfo,
 695         .nway_reset             = efx_ethtool_nway_reset,
 696         .get_link               = efx_ethtool_get_link,
 697         .get_coalesce           = efx_ethtool_get_coalesce,
 698         .set_coalesce           = efx_ethtool_set_coalesce,
 699         .get_pauseparam         = efx_ethtool_get_pauseparam,
 700         .set_pauseparam         = efx_ethtool_set_pauseparam,
 701         .get_rx_csum            = efx_ethtool_get_rx_csum,
 702         .set_rx_csum            = efx_ethtool_set_rx_csum,
 703         .get_tx_csum            = ethtool_op_get_tx_csum,
 704         .set_tx_csum            = efx_ethtool_set_tx_csum,
 705         .get_sg                 = ethtool_op_get_sg,
 706         .set_sg                 = ethtool_op_set_sg,
 707         .get_tso                = ethtool_op_get_tso,
 708         .set_tso                = efx_ethtool_set_tso,
 709         .get_flags              = ethtool_op_get_flags,
 710         .set_flags              = ethtool_op_set_flags,
 711         .self_test_count        = efx_ethtool_self_test_count,
 712         .self_test              = efx_ethtool_self_test,
 713         .get_strings            = efx_ethtool_get_strings,
 714         .phys_id                = efx_ethtool_phys_id,
 715         .get_stats_count        = efx_ethtool_get_stats_count,
 716         .get_ethtool_stats      = efx_ethtool_get_stats,
 717 };