drivers/net/ethernet/sfc/ethtool.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2010 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 ethtool_string {
  23         char name[ETH_GSTRING_LEN];
  24 };
  25
  26 struct efx_ethtool_stat {
  27         const char *name;
  28         enum {
  29                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  30                 EFX_ETHTOOL_STAT_SOURCE_nic,
  31                 EFX_ETHTOOL_STAT_SOURCE_channel,
  32                 EFX_ETHTOOL_STAT_SOURCE_tx_queue
  33         } source;
  34         unsigned offset;
  35         u64(*get_stat) (void *field); /* Reader function */
  36 };
  37
  38 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  39 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  40                                 get_stat_function) {                    \
  41         .name = #stat_name,                                             \
  42         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  43         .offset = ((((field_type *) 0) ==                               \
  44                       &((struct efx_##source_name *)0)->field) ?        \
  45                     offsetof(struct efx_##source_name, field) :         \
  46                     offsetof(struct efx_##source_name, field)),         \
  47         .get_stat = get_stat_function,                                  \
  48 }
  49
  50 static u64 efx_get_uint_stat(void *field)
  51 {
  52         return *(unsigned int *)field;
  53 }
  54
  55 static u64 efx_get_ulong_stat(void *field)
  56 {
  57         return *(unsigned long *)field;
  58 }
  59
  60 static u64 efx_get_u64_stat(void *field)
  61 {
  62         return *(u64 *) field;
  63 }
  64
  65 static u64 efx_get_atomic_stat(void *field)
  66 {
  67         return atomic_read((atomic_t *) field);
  68 }
  69
  70 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  71         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  72                           unsigned long, efx_get_ulong_stat)
  73
  74 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  75         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  76                           u64, efx_get_u64_stat)
  77
  78 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  79         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  80                          unsigned int, efx_get_uint_stat)
  81
  82 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  83         EFX_ETHTOOL_STAT(field, nic, field,                     \
  84                          atomic_t, efx_get_atomic_stat)
  85
  86 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
  87         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
  88                          unsigned int, efx_get_uint_stat)
  89
  90 #define EFX_ETHTOOL_UINT_TXQ_STAT(field)                        \
  91         EFX_ETHTOOL_STAT(tx_##field, tx_queue, field,           \
  92                          unsigned int, efx_get_uint_stat)
  93
  94 static struct efx_ethtool_stat efx_ethtool_stats[] = {
  95         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
  96         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
  97         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
  98         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
  99         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
 100         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
 101         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
 102         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
 103         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
 104         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 105         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 106         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 124         EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
 125         EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
 126         EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
 127         EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
 128         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 129         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 130         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 132         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 133         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 134         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 135         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 159         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 160         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 161         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 162         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 163         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 164         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
 165         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 166 };
 167
 168 /* Number of ethtool statistics */
 169 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 170
 171 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 172
 173 /**************************************************************************
 174  *
 175  * Ethtool operations
 176  *
 177  **************************************************************************
 178  */
 179
 180 /* Identify device by flashing LEDs */
 181 static int efx_ethtool_phys_id(struct net_device *net_dev,
 182                                enum ethtool_phys_id_state state)
 183 {
 184         struct efx_nic *efx = netdev_priv(net_dev);
 185         enum efx_led_mode mode = EFX_LED_DEFAULT;
 186
 187         switch (state) {
 188         case ETHTOOL_ID_ON:
 189                 mode = EFX_LED_ON;
 190                 break;
 191         case ETHTOOL_ID_OFF:
 192                 mode = EFX_LED_OFF;
 193                 break;
 194         case ETHTOOL_ID_INACTIVE:
 195                 mode = EFX_LED_DEFAULT;
 196                 break;
 197         case ETHTOOL_ID_ACTIVE:
 198                 return 1;       /* cycle on/off once per second */
 199         }
 200
 201         efx->type->set_id_led(efx, mode);
 202         return 0;
 203 }
 204
 205 /* This must be called with rtnl_lock held. */
 206 static int efx_ethtool_get_settings(struct net_device *net_dev,
 207                                     struct ethtool_cmd *ecmd)
 208 {
 209         struct efx_nic *efx = netdev_priv(net_dev);
 210         struct efx_link_state *link_state = &efx->link_state;
 211
 212         mutex_lock(&efx->mac_lock);
 213         efx->phy_op->get_settings(efx, ecmd);
 214         mutex_unlock(&efx->mac_lock);
 215
 216         /* GMAC does not support 1000Mbps HD */
 217         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
 218         /* Both MACs support pause frames (bidirectional and respond-only) */
 219         ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
 220
 221         if (LOOPBACK_INTERNAL(efx)) {
 222                 ethtool_cmd_speed_set(ecmd, link_state->speed);
 223                 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
 224         }
 225
 226         return 0;
 227 }
 228
 229 /* This must be called with rtnl_lock held. */
 230 static int efx_ethtool_set_settings(struct net_device *net_dev,
 231                                     struct ethtool_cmd *ecmd)
 232 {
 233         struct efx_nic *efx = netdev_priv(net_dev);
 234         int rc;
 235
 236         /* GMAC does not support 1000Mbps HD */
 237         if ((ethtool_cmd_speed(ecmd) == SPEED_1000) &&
 238             (ecmd->duplex != DUPLEX_FULL)) {
 239                 netif_dbg(efx, drv, efx->net_dev,
 240                           "rejecting unsupported 1000Mbps HD setting\n");
 241                 return -EINVAL;
 242         }
 243
 244         mutex_lock(&efx->mac_lock);
 245         rc = efx->phy_op->set_settings(efx, ecmd);
 246         mutex_unlock(&efx->mac_lock);
 247         return rc;
 248 }
 249
 250 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 251                                     struct ethtool_drvinfo *info)
 252 {
 253         struct efx_nic *efx = netdev_priv(net_dev);
 254
 255         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 256         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 257         if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
 258                 efx_mcdi_print_fwver(efx, info->fw_version,
 259                                      sizeof(info->fw_version));
 260         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 261 }
 262
 263 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
 264 {
 265         return efx_nic_get_regs_len(netdev_priv(net_dev));
 266 }
 267
 268 static void efx_ethtool_get_regs(struct net_device *net_dev,
 269                                  struct ethtool_regs *regs, void *buf)
 270 {
 271         struct efx_nic *efx = netdev_priv(net_dev);
 272
 273         regs->version = efx->type->revision;
 274         efx_nic_get_regs(efx, buf);
 275 }
 276
 277 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
 278 {
 279         struct efx_nic *efx = netdev_priv(net_dev);
 280         return efx->msg_enable;
 281 }
 282
 283 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
 284 {
 285         struct efx_nic *efx = netdev_priv(net_dev);
 286         efx->msg_enable = msg_enable;
 287 }
 288
 289 /**
 290  * efx_fill_test - fill in an individual self-test entry
 291  * @test_index:         Index of the test
 292  * @strings:            Ethtool strings, or %NULL
 293  * @data:               Ethtool test results, or %NULL
 294  * @test:               Pointer to test result (used only if data != %NULL)
 295  * @unit_format:        Unit name format (e.g. "chan\%d")
 296  * @unit_id:            Unit id (e.g. 0 for "chan0")
 297  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 298  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 299  *
 300  * Fill in an individual self-test entry.
 301  */
 302 static void efx_fill_test(unsigned int test_index,
 303                           struct ethtool_string *strings, u64 *data,
 304                           int *test, const char *unit_format, int unit_id,
 305                           const char *test_format, const char *test_id)
 306 {
 307         struct ethtool_string unit_str, test_str;
 308
 309         /* Fill data value, if applicable */
 310         if (data)
 311                 data[test_index] = *test;
 312
 313         /* Fill string, if applicable */
 314         if (strings) {
 315                 if (strchr(unit_format, '%'))
 316                         snprintf(unit_str.name, sizeof(unit_str.name),
 317                                  unit_format, unit_id);
 318                 else
 319                         strcpy(unit_str.name, unit_format);
 320                 snprintf(test_str.name, sizeof(test_str.name),
 321                          test_format, test_id);
 322                 snprintf(strings[test_index].name,
 323                          sizeof(strings[test_index].name),
 324                          "%-6s %-24s", unit_str.name, test_str.name);
 325         }
 326 }
 327
 328 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 329 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 330 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 331 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 332         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 333
 334 /**
 335  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 336  * @efx:                Efx NIC
 337  * @lb_tests:           Efx loopback self-test results structure
 338  * @mode:               Loopback test mode
 339  * @test_index:         Starting index of the test
 340  * @strings:            Ethtool strings, or %NULL
 341  * @data:               Ethtool test results, or %NULL
 342  */
 343 static int efx_fill_loopback_test(struct efx_nic *efx,
 344                                   struct efx_loopback_self_tests *lb_tests,
 345                                   enum efx_loopback_mode mode,
 346                                   unsigned int test_index,
 347                                   struct ethtool_string *strings, u64 *data)
 348 {
 349         struct efx_channel *channel = efx_get_channel(efx, 0);
 350         struct efx_tx_queue *tx_queue;
 351
 352         efx_for_each_channel_tx_queue(tx_queue, channel) {
 353                 efx_fill_test(test_index++, strings, data,
 354                               &lb_tests->tx_sent[tx_queue->queue],
 355                               EFX_TX_QUEUE_NAME(tx_queue),
 356                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 357                 efx_fill_test(test_index++, strings, data,
 358                               &lb_tests->tx_done[tx_queue->queue],
 359                               EFX_TX_QUEUE_NAME(tx_queue),
 360                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 361         }
 362         efx_fill_test(test_index++, strings, data,
 363                       &lb_tests->rx_good,
 364                       "rx", 0,
 365                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 366         efx_fill_test(test_index++, strings, data,
 367                       &lb_tests->rx_bad,
 368                       "rx", 0,
 369                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 370
 371         return test_index;
 372 }
 373
 374 /**
 375  * efx_ethtool_fill_self_tests - get self-test details
 376  * @efx:                Efx NIC
 377  * @tests:              Efx self-test results structure, or %NULL
 378  * @strings:            Ethtool strings, or %NULL
 379  * @data:               Ethtool test results, or %NULL
 380  */
 381 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 382                                        struct efx_self_tests *tests,
 383                                        struct ethtool_string *strings,
 384                                        u64 *data)
 385 {
 386         struct efx_channel *channel;
 387         unsigned int n = 0, i;
 388         enum efx_loopback_mode mode;
 389
 390         efx_fill_test(n++, strings, data, &tests->phy_alive,
 391                       "phy", 0, "alive", NULL);
 392         efx_fill_test(n++, strings, data, &tests->nvram,
 393                       "core", 0, "nvram", NULL);
 394         efx_fill_test(n++, strings, data, &tests->interrupt,
 395                       "core", 0, "interrupt", NULL);
 396
 397         /* Event queues */
 398         efx_for_each_channel(channel, efx) {
 399                 efx_fill_test(n++, strings, data,
 400                               &tests->eventq_dma[channel->channel],
 401                               EFX_CHANNEL_NAME(channel),
 402                               "eventq.dma", NULL);
 403                 efx_fill_test(n++, strings, data,
 404                               &tests->eventq_int[channel->channel],
 405                               EFX_CHANNEL_NAME(channel),
 406                               "eventq.int", NULL);
 407                 efx_fill_test(n++, strings, data,
 408                               &tests->eventq_poll[channel->channel],
 409                               EFX_CHANNEL_NAME(channel),
 410                               "eventq.poll", NULL);
 411         }
 412
 413         efx_fill_test(n++, strings, data, &tests->registers,
 414                       "core", 0, "registers", NULL);
 415
 416         if (efx->phy_op->run_tests != NULL) {
 417                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
 418
 419                 for (i = 0; true; ++i) {
 420                         const char *name;
 421
 422                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 423                         name = efx->phy_op->test_name(efx, i);
 424                         if (name == NULL)
 425                                 break;
 426
 427                         efx_fill_test(n++, strings, data, &tests->phy_ext[i],
 428                                       "phy", 0, name, NULL);
 429                 }
 430         }
 431
 432         /* Loopback tests */
 433         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 434                 if (!(efx->loopback_modes & (1 << mode)))
 435                         continue;
 436                 n = efx_fill_loopback_test(efx,
 437                                            &tests->loopback[mode], mode, n,
 438                                            strings, data);
 439         }
 440
 441         return n;
 442 }
 443
 444 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 445                                       int string_set)
 446 {
 447         switch (string_set) {
 448         case ETH_SS_STATS:
 449                 return EFX_ETHTOOL_NUM_STATS;
 450         case ETH_SS_TEST:
 451                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 452                                                    NULL, NULL, NULL);
 453         default:
 454                 return -EINVAL;
 455         }
 456 }
 457
 458 static void efx_ethtool_get_strings(struct net_device *net_dev,
 459                                     u32 string_set, u8 *strings)
 460 {
 461         struct efx_nic *efx = netdev_priv(net_dev);
 462         struct ethtool_string *ethtool_strings =
 463                 (struct ethtool_string *)strings;
 464         int i;
 465
 466         switch (string_set) {
 467         case ETH_SS_STATS:
 468                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 469                         strncpy(ethtool_strings[i].name,
 470                                 efx_ethtool_stats[i].name,
 471                                 sizeof(ethtool_strings[i].name));
 472                 break;
 473         case ETH_SS_TEST:
 474                 efx_ethtool_fill_self_tests(efx, NULL,
 475                                             ethtool_strings, NULL);
 476                 break;
 477         default:
 478                 /* No other string sets */
 479                 break;
 480         }
 481 }
 482
 483 static void efx_ethtool_get_stats(struct net_device *net_dev,
 484                                   struct ethtool_stats *stats,
 485                                   u64 *data)
 486 {
 487         struct efx_nic *efx = netdev_priv(net_dev);
 488         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 489         struct efx_ethtool_stat *stat;
 490         struct efx_channel *channel;
 491         struct efx_tx_queue *tx_queue;
 492         struct rtnl_link_stats64 temp;
 493         int i;
 494
 495         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 496
 497         /* Update MAC and NIC statistics */
 498         dev_get_stats(net_dev, &temp);
 499
 500         /* Fill detailed statistics buffer */
 501         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 502                 stat = &efx_ethtool_stats[i];
 503                 switch (stat->source) {
 504                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 505                         data[i] = stat->get_stat((void *)mac_stats +
 506                                                  stat->offset);
 507                         break;
 508                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 509                         data[i] = stat->get_stat((void *)efx + stat->offset);
 510                         break;
 511                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 512                         data[i] = 0;
 513                         efx_for_each_channel(channel, efx)
 514                                 data[i] += stat->get_stat((void *)channel +
 515                                                           stat->offset);
 516                         break;
 517                 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
 518                         data[i] = 0;
 519                         efx_for_each_channel(channel, efx) {
 520                                 efx_for_each_channel_tx_queue(tx_queue, channel)
 521                                         data[i] +=
 522                                                 stat->get_stat((void *)tx_queue
 523                                                                + stat->offset);
 524                         }
 525                         break;
 526                 }
 527         }
 528 }
 529
 530 static void efx_ethtool_self_test(struct net_device *net_dev,
 531                                   struct ethtool_test *test, u64 *data)
 532 {
 533         struct efx_nic *efx = netdev_priv(net_dev);
 534         struct efx_self_tests *efx_tests;
 535         int already_up;
 536         int rc = -ENOMEM;
 537
 538         efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
 539         if (!efx_tests)
 540                 goto fail;
 541
 542
 543         ASSERT_RTNL();
 544         if (efx->state != STATE_RUNNING) {
 545                 rc = -EIO;
 546                 goto fail1;
 547         }
 548
 549         netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
 550                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 551
 552         /* We need rx buffers and interrupts. */
 553         already_up = (efx->net_dev->flags & IFF_UP);
 554         if (!already_up) {
 555                 rc = dev_open(efx->net_dev);
 556                 if (rc) {
 557                         netif_err(efx, drv, efx->net_dev,
 558                                   "failed opening device.\n");
 559                         goto fail1;
 560                 }
 561         }
 562
 563         rc = efx_selftest(efx, efx_tests, test->flags);
 564
 565         if (!already_up)
 566                 dev_close(efx->net_dev);
 567
 568         netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
 569                    rc == 0 ? "passed" : "failed",
 570                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 571
 572 fail1:
 573         /* Fill ethtool results structures */
 574         efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
 575         kfree(efx_tests);
 576 fail:
 577         if (rc)
 578                 test->flags |= ETH_TEST_FL_FAILED;
 579 }
 580
 581 /* Restart autonegotiation */
 582 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 583 {
 584         struct efx_nic *efx = netdev_priv(net_dev);
 585
 586         return mdio45_nway_restart(&efx->mdio);
 587 }
 588
 589 /*
 590  * Each channel has a single IRQ and moderation timer, started by any
 591  * completion (or other event).  Unless the module parameter
 592  * separate_tx_channels is set, IRQs and moderation are therefore
 593  * shared between RX and TX completions.  In this case, when RX IRQ
 594  * moderation is explicitly changed then TX IRQ moderation is
 595  * automatically changed too, but otherwise we fail if the two values
 596  * are requested to be different.
 597  *
 598  * The hardware does not support a limit on the number of completions
 599  * before an IRQ, so we do not use the max_frames fields.  We should
 600  * report and require that max_frames == (usecs != 0), but this would
 601  * invalidate existing user documentation.
 602  *
 603  * The hardware does not have distinct settings for interrupt
 604  * moderation while the previous IRQ is being handled, so we should
 605  * not use the 'irq' fields.  However, an earlier developer
 606  * misunderstood the meaning of the 'irq' fields and the driver did
 607  * not support the standard fields.  To avoid invalidating existing
 608  * user documentation, we report and accept changes through either the
 609  * standard or 'irq' fields.  If both are changed at the same time, we
 610  * prefer the standard field.
 611  *
 612  * We implement adaptive IRQ moderation, but use a different algorithm
 613  * from that assumed in the definition of struct ethtool_coalesce.
 614  * Therefore we do not use any of the adaptive moderation parameters
 615  * in it.
 616  */
 617
 618 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 619                                     struct ethtool_coalesce *coalesce)
 620 {
 621         struct efx_nic *efx = netdev_priv(net_dev);
 622         unsigned int tx_usecs, rx_usecs;
 623         bool rx_adaptive;
 624
 625         efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive);
 626
 627         coalesce->tx_coalesce_usecs = tx_usecs;
 628         coalesce->tx_coalesce_usecs_irq = tx_usecs;
 629         coalesce->rx_coalesce_usecs = rx_usecs;
 630         coalesce->rx_coalesce_usecs_irq = rx_usecs;
 631         coalesce->use_adaptive_rx_coalesce = rx_adaptive;
 632
 633         return 0;
 634 }
 635
 636 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 637                                     struct ethtool_coalesce *coalesce)
 638 {
 639         struct efx_nic *efx = netdev_priv(net_dev);
 640         struct efx_channel *channel;
 641         unsigned int tx_usecs, rx_usecs;
 642         bool adaptive, rx_may_override_tx;
 643         int rc;
 644
 645         if (coalesce->use_adaptive_tx_coalesce)
 646                 return -EINVAL;
 647
 648         efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive);
 649
 650         if (coalesce->rx_coalesce_usecs != rx_usecs)
 651                 rx_usecs = coalesce->rx_coalesce_usecs;
 652         else
 653                 rx_usecs = coalesce->rx_coalesce_usecs_irq;
 654
 655         adaptive = coalesce->use_adaptive_rx_coalesce;
 656
 657         /* If channels are shared, TX IRQ moderation can be quietly
 658          * overridden unless it is changed from its old value.
 659          */
 660         rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs &&
 661                               coalesce->tx_coalesce_usecs_irq == tx_usecs);
 662         if (coalesce->tx_coalesce_usecs != tx_usecs)
 663                 tx_usecs = coalesce->tx_coalesce_usecs;
 664         else
 665                 tx_usecs = coalesce->tx_coalesce_usecs_irq;
 666
 667         rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive,
 668                                      rx_may_override_tx);
 669         if (rc != 0)
 670                 return rc;
 671
 672         efx_for_each_channel(channel, efx)
 673                 efx->type->push_irq_moderation(channel);
 674
 675         return 0;
 676 }
 677
 678 static void efx_ethtool_get_ringparam(struct net_device *net_dev,
 679                                       struct ethtool_ringparam *ring)
 680 {
 681         struct efx_nic *efx = netdev_priv(net_dev);
 682
 683         ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
 684         ring->tx_max_pending = EFX_MAX_DMAQ_SIZE;
 685         ring->rx_pending = efx->rxq_entries;
 686         ring->tx_pending = efx->txq_entries;
 687 }
 688
 689 static int efx_ethtool_set_ringparam(struct net_device *net_dev,
 690                                      struct ethtool_ringparam *ring)
 691 {
 692         struct efx_nic *efx = netdev_priv(net_dev);
 693
 694         if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
 695             ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
 696             ring->tx_pending > EFX_MAX_DMAQ_SIZE)
 697                 return -EINVAL;
 698
 699         if (ring->rx_pending < EFX_MIN_RING_SIZE ||
 700             ring->tx_pending < EFX_MIN_RING_SIZE) {
 701                 netif_err(efx, drv, efx->net_dev,
 702                           "TX and RX queues cannot be smaller than %ld\n",
 703                           EFX_MIN_RING_SIZE);
 704                 return -EINVAL;
 705         }
 706
 707         return efx_realloc_channels(efx, ring->rx_pending, ring->tx_pending);
 708 }
 709
 710 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 711                                       struct ethtool_pauseparam *pause)
 712 {
 713         struct efx_nic *efx = netdev_priv(net_dev);
 714         u8 wanted_fc, old_fc;
 715         u32 old_adv;
 716         bool reset;
 717         int rc = 0;
 718
 719         mutex_lock(&efx->mac_lock);
 720
 721         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 722                      (pause->tx_pause ? EFX_FC_TX : 0) |
 723                      (pause->autoneg ? EFX_FC_AUTO : 0));
 724
 725         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 726                 netif_dbg(efx, drv, efx->net_dev,
 727                           "Flow control unsupported: tx ON rx OFF\n");
 728                 rc = -EINVAL;
 729                 goto out;
 730         }
 731
 732         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
 733                 netif_dbg(efx, drv, efx->net_dev,
 734                           "Autonegotiation is disabled\n");
 735                 rc = -EINVAL;
 736                 goto out;
 737         }
 738
 739         /* TX flow control may automatically turn itself off if the
 740          * link partner (intermittently) stops responding to pause
 741          * frames. There isn't any indication that this has happened,
 742          * so the best we do is leave it up to the user to spot this
 743          * and fix it be cycling transmit flow control on this end. */
 744         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 745         if (EFX_WORKAROUND_11482(efx) && reset) {
 746                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 747                         /* Recover by resetting the EM block */
 748                         falcon_stop_nic_stats(efx);
 749                         falcon_drain_tx_fifo(efx);
 750                         efx->mac_op->reconfigure(efx);
 751                         falcon_start_nic_stats(efx);
 752                 } else {
 753                         /* Schedule a reset to recover */
 754                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 755                 }
 756         }
 757
 758         old_adv = efx->link_advertising;
 759         old_fc = efx->wanted_fc;
 760         efx_link_set_wanted_fc(efx, wanted_fc);
 761         if (efx->link_advertising != old_adv ||
 762             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 763                 rc = efx->phy_op->reconfigure(efx);
 764                 if (rc) {
 765                         netif_err(efx, drv, efx->net_dev,
 766                                   "Unable to advertise requested flow "
 767                                   "control setting\n");
 768                         goto out;
 769                 }
 770         }
 771
 772         /* Reconfigure the MAC. The PHY *may* generate a link state change event
 773          * if the user just changed the advertised capabilities, but there's no
 774          * harm doing this twice */
 775         efx->mac_op->reconfigure(efx);
 776
 777 out:
 778         mutex_unlock(&efx->mac_lock);
 779
 780         return rc;
 781 }
 782
 783 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 784                                        struct ethtool_pauseparam *pause)
 785 {
 786         struct efx_nic *efx = netdev_priv(net_dev);
 787
 788         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 789         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 790         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 791 }
 792
 793
 794 static void efx_ethtool_get_wol(struct net_device *net_dev,
 795                                 struct ethtool_wolinfo *wol)
 796 {
 797         struct efx_nic *efx = netdev_priv(net_dev);
 798         return efx->type->get_wol(efx, wol);
 799 }
 800
 801
 802 static int efx_ethtool_set_wol(struct net_device *net_dev,
 803                                struct ethtool_wolinfo *wol)
 804 {
 805         struct efx_nic *efx = netdev_priv(net_dev);
 806         return efx->type->set_wol(efx, wol->wolopts);
 807 }
 808
 809 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 810 {
 811         struct efx_nic *efx = netdev_priv(net_dev);
 812         int rc;
 813
 814         rc = efx->type->map_reset_flags(flags);
 815         if (rc < 0)
 816                 return rc;
 817
 818         return efx_reset(efx, rc);
 819 }
 820
 821 static int
 822 efx_ethtool_get_rxnfc(struct net_device *net_dev,
 823                       struct ethtool_rxnfc *info, u32 *rules __always_unused)
 824 {
 825         struct efx_nic *efx = netdev_priv(net_dev);
 826
 827         switch (info->cmd) {
 828         case ETHTOOL_GRXRINGS:
 829                 info->data = efx->n_rx_channels;
 830                 return 0;
 831
 832         case ETHTOOL_GRXFH: {
 833                 unsigned min_revision = 0;
 834
 835                 info->data = 0;
 836                 switch (info->flow_type) {
 837                 case TCP_V4_FLOW:
 838                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 839                         /* fall through */
 840                 case UDP_V4_FLOW:
 841                 case SCTP_V4_FLOW:
 842                 case AH_ESP_V4_FLOW:
 843                 case IPV4_FLOW:
 844                         info->data |= RXH_IP_SRC | RXH_IP_DST;
 845                         min_revision = EFX_REV_FALCON_B0;
 846                         break;
 847                 case TCP_V6_FLOW:
 848                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 849                         /* fall through */
 850                 case UDP_V6_FLOW:
 851                 case SCTP_V6_FLOW:
 852                 case AH_ESP_V6_FLOW:
 853                 case IPV6_FLOW:
 854                         info->data |= RXH_IP_SRC | RXH_IP_DST;
 855                         min_revision = EFX_REV_SIENA_A0;
 856                         break;
 857                 default:
 858                         break;
 859                 }
 860                 if (efx_nic_rev(efx) < min_revision)
 861                         info->data = 0;
 862                 return 0;
 863         }
 864
 865         default:
 866                 return -EOPNOTSUPP;
 867         }
 868 }
 869
 870 static int efx_ethtool_set_rx_ntuple(struct net_device *net_dev,
 871                                      struct ethtool_rx_ntuple *ntuple)
 872 {
 873         struct efx_nic *efx = netdev_priv(net_dev);
 874         struct ethtool_tcpip4_spec *ip_entry = &ntuple->fs.h_u.tcp_ip4_spec;
 875         struct ethtool_tcpip4_spec *ip_mask = &ntuple->fs.m_u.tcp_ip4_spec;
 876         struct ethhdr *mac_entry = &ntuple->fs.h_u.ether_spec;
 877         struct ethhdr *mac_mask = &ntuple->fs.m_u.ether_spec;
 878         struct efx_filter_spec filter;
 879         int rc;
 880
 881         /* Range-check action */
 882         if (ntuple->fs.action < ETHTOOL_RXNTUPLE_ACTION_CLEAR ||
 883             ntuple->fs.action >= (s32)efx->n_rx_channels)
 884                 return -EINVAL;
 885
 886         if (~ntuple->fs.data_mask)
 887                 return -EINVAL;
 888
 889         efx_filter_init_rx(&filter, EFX_FILTER_PRI_MANUAL, 0,
 890                            (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP) ?
 891                            0xfff : ntuple->fs.action);
 892
 893         switch (ntuple->fs.flow_type) {
 894         case TCP_V4_FLOW:
 895         case UDP_V4_FLOW: {
 896                 u8 proto = (ntuple->fs.flow_type == TCP_V4_FLOW ?
 897                             IPPROTO_TCP : IPPROTO_UDP);
 898
 899                 /* Must match all of destination, */
 900                 if (ip_mask->ip4dst | ip_mask->pdst)
 901                         return -EINVAL;
 902                 /* all or none of source, */
 903                 if ((ip_mask->ip4src | ip_mask->psrc) &&
 904                     ((__force u32)~ip_mask->ip4src |
 905                      (__force u16)~ip_mask->psrc))
 906                         return -EINVAL;
 907                 /* and nothing else */
 908                 if ((u8)~ip_mask->tos | (u16)~ntuple->fs.vlan_tag_mask)
 909                         return -EINVAL;
 910
 911                 if (!ip_mask->ip4src)
 912                         rc = efx_filter_set_ipv4_full(&filter, proto,
 913                                                       ip_entry->ip4dst,
 914                                                       ip_entry->pdst,
 915                                                       ip_entry->ip4src,
 916                                                       ip_entry->psrc);
 917                 else
 918                         rc = efx_filter_set_ipv4_local(&filter, proto,
 919                                                        ip_entry->ip4dst,
 920                                                        ip_entry->pdst);
 921                 if (rc)
 922                         return rc;
 923                 break;
 924         }
 925
 926         case ETHER_FLOW:
 927                 /* Must match all of destination, */
 928                 if (!is_zero_ether_addr(mac_mask->h_dest))
 929                         return -EINVAL;
 930                 /* all or none of VID, */
 931                 if (ntuple->fs.vlan_tag_mask != 0xf000 &&
 932                     ntuple->fs.vlan_tag_mask != 0xffff)
 933                         return -EINVAL;
 934                 /* and nothing else */
 935                 if (!is_broadcast_ether_addr(mac_mask->h_source) ||
 936                     mac_mask->h_proto != htons(0xffff))
 937                         return -EINVAL;
 938
 939                 rc = efx_filter_set_eth_local(
 940                         &filter,
 941                         (ntuple->fs.vlan_tag_mask == 0xf000) ?
 942                         ntuple->fs.vlan_tag : EFX_FILTER_VID_UNSPEC,
 943                         mac_entry->h_dest);
 944                 if (rc)
 945                         return rc;
 946                 break;
 947
 948         default:
 949                 return -EINVAL;
 950         }
 951
 952         if (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_CLEAR)
 953                 return efx_filter_remove_filter(efx, &filter);
 954
 955         rc = efx_filter_insert_filter(efx, &filter, true);
 956         return rc < 0 ? rc : 0;
 957 }
 958
 959 static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev,
 960                                       struct ethtool_rxfh_indir *indir)
 961 {
 962         struct efx_nic *efx = netdev_priv(net_dev);
 963         size_t copy_size =
 964                 min_t(size_t, indir->size, ARRAY_SIZE(efx->rx_indir_table));
 965
 966         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 967                 return -EOPNOTSUPP;
 968
 969         indir->size = ARRAY_SIZE(efx->rx_indir_table);
 970         memcpy(indir->ring_index, efx->rx_indir_table,
 971                copy_size * sizeof(indir->ring_index[0]));
 972         return 0;
 973 }
 974
 975 static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
 976                                       const struct ethtool_rxfh_indir *indir)
 977 {
 978         struct efx_nic *efx = netdev_priv(net_dev);
 979         size_t i;
 980
 981         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 982                 return -EOPNOTSUPP;
 983
 984         /* Validate size and indices */
 985         if (indir->size != ARRAY_SIZE(efx->rx_indir_table))
 986                 return -EINVAL;
 987         for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++)
 988                 if (indir->ring_index[i] >= efx->n_rx_channels)
 989                         return -EINVAL;
 990
 991         memcpy(efx->rx_indir_table, indir->ring_index,
 992                sizeof(efx->rx_indir_table));
 993         efx_nic_push_rx_indir_table(efx);
 994         return 0;
 995 }
 996
 997 const struct ethtool_ops efx_ethtool_ops = {
 998         .get_settings           = efx_ethtool_get_settings,
 999         .set_settings           = efx_ethtool_set_settings,
1000         .get_drvinfo            = efx_ethtool_get_drvinfo,
1001         .get_regs_len           = efx_ethtool_get_regs_len,
1002         .get_regs               = efx_ethtool_get_regs,
1003         .get_msglevel           = efx_ethtool_get_msglevel,
1004         .set_msglevel           = efx_ethtool_set_msglevel,
1005         .nway_reset             = efx_ethtool_nway_reset,
1006         .get_link               = ethtool_op_get_link,
1007         .get_coalesce           = efx_ethtool_get_coalesce,
1008         .set_coalesce           = efx_ethtool_set_coalesce,
1009         .get_ringparam          = efx_ethtool_get_ringparam,
1010         .set_ringparam          = efx_ethtool_set_ringparam,
1011         .get_pauseparam         = efx_ethtool_get_pauseparam,
1012         .set_pauseparam         = efx_ethtool_set_pauseparam,
1013         .get_sset_count         = efx_ethtool_get_sset_count,
1014         .self_test              = efx_ethtool_self_test,
1015         .get_strings            = efx_ethtool_get_strings,
1016         .set_phys_id            = efx_ethtool_phys_id,
1017         .get_ethtool_stats      = efx_ethtool_get_stats,
1018         .get_wol                = efx_ethtool_get_wol,
1019         .set_wol                = efx_ethtool_set_wol,
1020         .reset                  = efx_ethtool_reset,
1021         .get_rxnfc              = efx_ethtool_get_rxnfc,
1022         .set_rx_ntuple          = efx_ethtool_set_rx_ntuple,
1023         .get_rxfh_indir         = efx_ethtool_get_rxfh_indir,
1024         .set_rxfh_indir         = efx_ethtool_set_rxfh_indir,
1025 };