drivers/net/sfc/ethtool.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2010 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, u32 count)
 182 {
 183         struct efx_nic *efx = netdev_priv(net_dev);
 184
 185         do {
 186                 efx->type->set_id_led(efx, EFX_LED_ON);
 187                 schedule_timeout_interruptible(HZ / 2);
 188
 189                 efx->type->set_id_led(efx, EFX_LED_OFF);
 190                 schedule_timeout_interruptible(HZ / 2);
 191         } while (!signal_pending(current) && --count != 0);
 192
 193         efx->type->set_id_led(efx, EFX_LED_DEFAULT);
 194         return 0;
 195 }
 196
 197 /* This must be called with rtnl_lock held. */
 198 static int efx_ethtool_get_settings(struct net_device *net_dev,
 199                                     struct ethtool_cmd *ecmd)
 200 {
 201         struct efx_nic *efx = netdev_priv(net_dev);
 202         struct efx_link_state *link_state = &efx->link_state;
 203
 204         mutex_lock(&efx->mac_lock);
 205         efx->phy_op->get_settings(efx, ecmd);
 206         mutex_unlock(&efx->mac_lock);
 207
 208         /* GMAC does not support 1000Mbps HD */
 209         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
 210         /* Both MACs support pause frames (bidirectional and respond-only) */
 211         ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
 212
 213         if (LOOPBACK_INTERNAL(efx)) {
 214                 ecmd->speed = link_state->speed;
 215                 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
 216         }
 217
 218         return 0;
 219 }
 220
 221 /* This must be called with rtnl_lock held. */
 222 static int efx_ethtool_set_settings(struct net_device *net_dev,
 223                                     struct ethtool_cmd *ecmd)
 224 {
 225         struct efx_nic *efx = netdev_priv(net_dev);
 226         int rc;
 227
 228         /* GMAC does not support 1000Mbps HD */
 229         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 230                 netif_dbg(efx, drv, efx->net_dev,
 231                           "rejecting unsupported 1000Mbps HD setting\n");
 232                 return -EINVAL;
 233         }
 234
 235         mutex_lock(&efx->mac_lock);
 236         rc = efx->phy_op->set_settings(efx, ecmd);
 237         mutex_unlock(&efx->mac_lock);
 238         return rc;
 239 }
 240
 241 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 242                                     struct ethtool_drvinfo *info)
 243 {
 244         struct efx_nic *efx = netdev_priv(net_dev);
 245
 246         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 247         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 248         if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
 249                 efx_mcdi_print_fwver(efx, info->fw_version,
 250                                      sizeof(info->fw_version));
 251         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 252 }
 253
 254 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
 255 {
 256         return efx_nic_get_regs_len(netdev_priv(net_dev));
 257 }
 258
 259 static void efx_ethtool_get_regs(struct net_device *net_dev,
 260                                  struct ethtool_regs *regs, void *buf)
 261 {
 262         struct efx_nic *efx = netdev_priv(net_dev);
 263
 264         regs->version = efx->type->revision;
 265         efx_nic_get_regs(efx, buf);
 266 }
 267
 268 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
 269 {
 270         struct efx_nic *efx = netdev_priv(net_dev);
 271         return efx->msg_enable;
 272 }
 273
 274 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
 275 {
 276         struct efx_nic *efx = netdev_priv(net_dev);
 277         efx->msg_enable = msg_enable;
 278 }
 279
 280 /**
 281  * efx_fill_test - fill in an individual self-test entry
 282  * @test_index:         Index of the test
 283  * @strings:            Ethtool strings, or %NULL
 284  * @data:               Ethtool test results, or %NULL
 285  * @test:               Pointer to test result (used only if data != %NULL)
 286  * @unit_format:        Unit name format (e.g. "chan\%d")
 287  * @unit_id:            Unit id (e.g. 0 for "chan0")
 288  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 289  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 290  *
 291  * Fill in an individual self-test entry.
 292  */
 293 static void efx_fill_test(unsigned int test_index,
 294                           struct ethtool_string *strings, u64 *data,
 295                           int *test, const char *unit_format, int unit_id,
 296                           const char *test_format, const char *test_id)
 297 {
 298         struct ethtool_string unit_str, test_str;
 299
 300         /* Fill data value, if applicable */
 301         if (data)
 302                 data[test_index] = *test;
 303
 304         /* Fill string, if applicable */
 305         if (strings) {
 306                 if (strchr(unit_format, '%'))
 307                         snprintf(unit_str.name, sizeof(unit_str.name),
 308                                  unit_format, unit_id);
 309                 else
 310                         strcpy(unit_str.name, unit_format);
 311                 snprintf(test_str.name, sizeof(test_str.name),
 312                          test_format, test_id);
 313                 snprintf(strings[test_index].name,
 314                          sizeof(strings[test_index].name),
 315                          "%-6s %-24s", unit_str.name, test_str.name);
 316         }
 317 }
 318
 319 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 320 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 321 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 322 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 323         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 324
 325 /**
 326  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 327  * @efx:                Efx NIC
 328  * @lb_tests:           Efx loopback self-test results structure
 329  * @mode:               Loopback test mode
 330  * @test_index:         Starting index of the test
 331  * @strings:            Ethtool strings, or %NULL
 332  * @data:               Ethtool test results, or %NULL
 333  */
 334 static int efx_fill_loopback_test(struct efx_nic *efx,
 335                                   struct efx_loopback_self_tests *lb_tests,
 336                                   enum efx_loopback_mode mode,
 337                                   unsigned int test_index,
 338                                   struct ethtool_string *strings, u64 *data)
 339 {
 340         struct efx_channel *channel = efx_get_channel(efx, 0);
 341         struct efx_tx_queue *tx_queue;
 342
 343         efx_for_each_channel_tx_queue(tx_queue, channel) {
 344                 efx_fill_test(test_index++, strings, data,
 345                               &lb_tests->tx_sent[tx_queue->queue],
 346                               EFX_TX_QUEUE_NAME(tx_queue),
 347                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 348                 efx_fill_test(test_index++, strings, data,
 349                               &lb_tests->tx_done[tx_queue->queue],
 350                               EFX_TX_QUEUE_NAME(tx_queue),
 351                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 352         }
 353         efx_fill_test(test_index++, strings, data,
 354                       &lb_tests->rx_good,
 355                       "rx", 0,
 356                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 357         efx_fill_test(test_index++, strings, data,
 358                       &lb_tests->rx_bad,
 359                       "rx", 0,
 360                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 361
 362         return test_index;
 363 }
 364
 365 /**
 366  * efx_ethtool_fill_self_tests - get self-test details
 367  * @efx:                Efx NIC
 368  * @tests:              Efx self-test results structure, or %NULL
 369  * @strings:            Ethtool strings, or %NULL
 370  * @data:               Ethtool test results, or %NULL
 371  */
 372 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 373                                        struct efx_self_tests *tests,
 374                                        struct ethtool_string *strings,
 375                                        u64 *data)
 376 {
 377         struct efx_channel *channel;
 378         unsigned int n = 0, i;
 379         enum efx_loopback_mode mode;
 380
 381         efx_fill_test(n++, strings, data, &tests->phy_alive,
 382                       "phy", 0, "alive", NULL);
 383         efx_fill_test(n++, strings, data, &tests->nvram,
 384                       "core", 0, "nvram", NULL);
 385         efx_fill_test(n++, strings, data, &tests->interrupt,
 386                       "core", 0, "interrupt", NULL);
 387
 388         /* Event queues */
 389         efx_for_each_channel(channel, efx) {
 390                 efx_fill_test(n++, strings, data,
 391                               &tests->eventq_dma[channel->channel],
 392                               EFX_CHANNEL_NAME(channel),
 393                               "eventq.dma", NULL);
 394                 efx_fill_test(n++, strings, data,
 395                               &tests->eventq_int[channel->channel],
 396                               EFX_CHANNEL_NAME(channel),
 397                               "eventq.int", NULL);
 398                 efx_fill_test(n++, strings, data,
 399                               &tests->eventq_poll[channel->channel],
 400                               EFX_CHANNEL_NAME(channel),
 401                               "eventq.poll", NULL);
 402         }
 403
 404         efx_fill_test(n++, strings, data, &tests->registers,
 405                       "core", 0, "registers", NULL);
 406
 407         if (efx->phy_op->run_tests != NULL) {
 408                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
 409
 410                 for (i = 0; true; ++i) {
 411                         const char *name;
 412
 413                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 414                         name = efx->phy_op->test_name(efx, i);
 415                         if (name == NULL)
 416                                 break;
 417
 418                         efx_fill_test(n++, strings, data, &tests->phy_ext[i],
 419                                       "phy", 0, name, NULL);
 420                 }
 421         }
 422
 423         /* Loopback tests */
 424         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 425                 if (!(efx->loopback_modes & (1 << mode)))
 426                         continue;
 427                 n = efx_fill_loopback_test(efx,
 428                                            &tests->loopback[mode], mode, n,
 429                                            strings, data);
 430         }
 431
 432         return n;
 433 }
 434
 435 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 436                                       int string_set)
 437 {
 438         switch (string_set) {
 439         case ETH_SS_STATS:
 440                 return EFX_ETHTOOL_NUM_STATS;
 441         case ETH_SS_TEST:
 442                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 443                                                    NULL, NULL, NULL);
 444         default:
 445                 return -EINVAL;
 446         }
 447 }
 448
 449 static void efx_ethtool_get_strings(struct net_device *net_dev,
 450                                     u32 string_set, u8 *strings)
 451 {
 452         struct efx_nic *efx = netdev_priv(net_dev);
 453         struct ethtool_string *ethtool_strings =
 454                 (struct ethtool_string *)strings;
 455         int i;
 456
 457         switch (string_set) {
 458         case ETH_SS_STATS:
 459                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 460                         strncpy(ethtool_strings[i].name,
 461                                 efx_ethtool_stats[i].name,
 462                                 sizeof(ethtool_strings[i].name));
 463                 break;
 464         case ETH_SS_TEST:
 465                 efx_ethtool_fill_self_tests(efx, NULL,
 466                                             ethtool_strings, NULL);
 467                 break;
 468         default:
 469                 /* No other string sets */
 470                 break;
 471         }
 472 }
 473
 474 static void efx_ethtool_get_stats(struct net_device *net_dev,
 475                                   struct ethtool_stats *stats,
 476                                   u64 *data)
 477 {
 478         struct efx_nic *efx = netdev_priv(net_dev);
 479         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 480         struct efx_ethtool_stat *stat;
 481         struct efx_channel *channel;
 482         struct efx_tx_queue *tx_queue;
 483         struct rtnl_link_stats64 temp;
 484         int i;
 485
 486         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 487
 488         /* Update MAC and NIC statistics */
 489         dev_get_stats(net_dev, &temp);
 490
 491         /* Fill detailed statistics buffer */
 492         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 493                 stat = &efx_ethtool_stats[i];
 494                 switch (stat->source) {
 495                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 496                         data[i] = stat->get_stat((void *)mac_stats +
 497                                                  stat->offset);
 498                         break;
 499                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 500                         data[i] = stat->get_stat((void *)efx + stat->offset);
 501                         break;
 502                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 503                         data[i] = 0;
 504                         efx_for_each_channel(channel, efx)
 505                                 data[i] += stat->get_stat((void *)channel +
 506                                                           stat->offset);
 507                         break;
 508                 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
 509                         data[i] = 0;
 510                         efx_for_each_channel(channel, efx) {
 511                                 efx_for_each_channel_tx_queue(tx_queue, channel)
 512                                         data[i] +=
 513                                                 stat->get_stat((void *)tx_queue
 514                                                                + stat->offset);
 515                         }
 516                         break;
 517                 }
 518         }
 519 }
 520
 521 static void efx_ethtool_self_test(struct net_device *net_dev,
 522                                   struct ethtool_test *test, u64 *data)
 523 {
 524         struct efx_nic *efx = netdev_priv(net_dev);
 525         struct efx_self_tests *efx_tests;
 526         int already_up;
 527         int rc = -ENOMEM;
 528
 529         efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
 530         if (!efx_tests)
 531                 goto fail;
 532
 533
 534         ASSERT_RTNL();
 535         if (efx->state != STATE_RUNNING) {
 536                 rc = -EIO;
 537                 goto fail1;
 538         }
 539
 540         netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
 541                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 542
 543         /* We need rx buffers and interrupts. */
 544         already_up = (efx->net_dev->flags & IFF_UP);
 545         if (!already_up) {
 546                 rc = dev_open(efx->net_dev);
 547                 if (rc) {
 548                         netif_err(efx, drv, efx->net_dev,
 549                                   "failed opening device.\n");
 550                         goto fail1;
 551                 }
 552         }
 553
 554         rc = efx_selftest(efx, efx_tests, test->flags);
 555
 556         if (!already_up)
 557                 dev_close(efx->net_dev);
 558
 559         netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
 560                    rc == 0 ? "passed" : "failed",
 561                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 562
 563 fail1:
 564         /* Fill ethtool results structures */
 565         efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
 566         kfree(efx_tests);
 567 fail:
 568         if (rc)
 569                 test->flags |= ETH_TEST_FL_FAILED;
 570 }
 571
 572 /* Restart autonegotiation */
 573 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 574 {
 575         struct efx_nic *efx = netdev_priv(net_dev);
 576
 577         return mdio45_nway_restart(&efx->mdio);
 578 }
 579
 580 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 581                                     struct ethtool_coalesce *coalesce)
 582 {
 583         struct efx_nic *efx = netdev_priv(net_dev);
 584         struct efx_channel *channel;
 585
 586         memset(coalesce, 0, sizeof(*coalesce));
 587
 588         /* Find lowest IRQ moderation across all used TX queues */
 589         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 590         efx_for_each_channel(channel, efx) {
 591                 if (!efx_channel_has_tx_queues(channel))
 592                         continue;
 593                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 594                         if (channel->channel < efx->n_rx_channels)
 595                                 coalesce->tx_coalesce_usecs_irq =
 596                                         channel->irq_moderation;
 597                         else
 598                                 coalesce->tx_coalesce_usecs_irq = 0;
 599                 }
 600         }
 601
 602         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
 603         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
 604
 605         coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 606         coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 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         unsigned tx_usecs, rx_usecs, adaptive;
 620
 621         if (coalesce->use_adaptive_tx_coalesce)
 622                 return -EOPNOTSUPP;
 623
 624         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 625                 netif_err(efx, drv, efx->net_dev, "invalid coalescing setting. "
 626                           "Only rx/tx_coalesce_usecs_irq are supported\n");
 627                 return -EOPNOTSUPP;
 628         }
 629
 630         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 631         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 632         adaptive = coalesce->use_adaptive_rx_coalesce;
 633
 634         /* If the channel is shared only allow RX parameters to be set */
 635         efx_for_each_channel(channel, efx) {
 636                 if (efx_channel_has_rx_queue(channel) &&
 637                     efx_channel_has_tx_queues(channel) &&
 638                     tx_usecs) {
 639                         netif_err(efx, drv, efx->net_dev, "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, adaptive);
 646         efx_for_each_channel(channel, efx)
 647                 efx->type->push_irq_moderation(channel);
 648
 649         return 0;
 650 }
 651
 652 static void efx_ethtool_get_ringparam(struct net_device *net_dev,
 653                                       struct ethtool_ringparam *ring)
 654 {
 655         struct efx_nic *efx = netdev_priv(net_dev);
 656
 657         ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
 658         ring->tx_max_pending = EFX_MAX_DMAQ_SIZE;
 659         ring->rx_mini_max_pending = 0;
 660         ring->rx_jumbo_max_pending = 0;
 661         ring->rx_pending = efx->rxq_entries;
 662         ring->tx_pending = efx->txq_entries;
 663         ring->rx_mini_pending = 0;
 664         ring->rx_jumbo_pending = 0;
 665 }
 666
 667 static int efx_ethtool_set_ringparam(struct net_device *net_dev,
 668                                      struct ethtool_ringparam *ring)
 669 {
 670         struct efx_nic *efx = netdev_priv(net_dev);
 671
 672         if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
 673             ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
 674             ring->tx_pending > EFX_MAX_DMAQ_SIZE)
 675                 return -EINVAL;
 676
 677         if (ring->rx_pending < EFX_MIN_RING_SIZE ||
 678             ring->tx_pending < EFX_MIN_RING_SIZE) {
 679                 netif_err(efx, drv, efx->net_dev,
 680                           "TX and RX queues cannot be smaller than %ld\n",
 681                           EFX_MIN_RING_SIZE);
 682                 return -EINVAL;
 683         }
 684
 685         return efx_realloc_channels(efx, ring->rx_pending, ring->tx_pending);
 686 }
 687
 688 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 689                                       struct ethtool_pauseparam *pause)
 690 {
 691         struct efx_nic *efx = netdev_priv(net_dev);
 692         enum efx_fc_type wanted_fc, old_fc;
 693         u32 old_adv;
 694         bool reset;
 695         int rc = 0;
 696
 697         mutex_lock(&efx->mac_lock);
 698
 699         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 700                      (pause->tx_pause ? EFX_FC_TX : 0) |
 701                      (pause->autoneg ? EFX_FC_AUTO : 0));
 702
 703         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 704                 netif_dbg(efx, drv, efx->net_dev,
 705                           "Flow control unsupported: tx ON rx OFF\n");
 706                 rc = -EINVAL;
 707                 goto out;
 708         }
 709
 710         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
 711                 netif_dbg(efx, drv, efx->net_dev,
 712                           "Autonegotiation is disabled\n");
 713                 rc = -EINVAL;
 714                 goto out;
 715         }
 716
 717         /* TX flow control may automatically turn itself off if the
 718          * link partner (intermittently) stops responding to pause
 719          * frames. There isn't any indication that this has happened,
 720          * so the best we do is leave it up to the user to spot this
 721          * and fix it be cycling transmit flow control on this end. */
 722         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 723         if (EFX_WORKAROUND_11482(efx) && reset) {
 724                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 725                         /* Recover by resetting the EM block */
 726                         falcon_stop_nic_stats(efx);
 727                         falcon_drain_tx_fifo(efx);
 728                         efx->mac_op->reconfigure(efx);
 729                         falcon_start_nic_stats(efx);
 730                 } else {
 731                         /* Schedule a reset to recover */
 732                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 733                 }
 734         }
 735
 736         old_adv = efx->link_advertising;
 737         old_fc = efx->wanted_fc;
 738         efx_link_set_wanted_fc(efx, wanted_fc);
 739         if (efx->link_advertising != old_adv ||
 740             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 741                 rc = efx->phy_op->reconfigure(efx);
 742                 if (rc) {
 743                         netif_err(efx, drv, efx->net_dev,
 744                                   "Unable to advertise requested flow "
 745                                   "control setting\n");
 746                         goto out;
 747                 }
 748         }
 749
 750         /* Reconfigure the MAC. The PHY *may* generate a link state change event
 751          * if the user just changed the advertised capabilities, but there's no
 752          * harm doing this twice */
 753         efx->mac_op->reconfigure(efx);
 754
 755 out:
 756         mutex_unlock(&efx->mac_lock);
 757
 758         return rc;
 759 }
 760
 761 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 762                                        struct ethtool_pauseparam *pause)
 763 {
 764         struct efx_nic *efx = netdev_priv(net_dev);
 765
 766         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 767         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 768         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 769 }
 770
 771
 772 static void efx_ethtool_get_wol(struct net_device *net_dev,
 773                                 struct ethtool_wolinfo *wol)
 774 {
 775         struct efx_nic *efx = netdev_priv(net_dev);
 776         return efx->type->get_wol(efx, wol);
 777 }
 778
 779
 780 static int efx_ethtool_set_wol(struct net_device *net_dev,
 781                                struct ethtool_wolinfo *wol)
 782 {
 783         struct efx_nic *efx = netdev_priv(net_dev);
 784         return efx->type->set_wol(efx, wol->wolopts);
 785 }
 786
 787 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 788 {
 789         struct efx_nic *efx = netdev_priv(net_dev);
 790         enum reset_type method;
 791         enum {
 792                 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
 793                                            ETH_RESET_OFFLOAD | ETH_RESET_MAC)
 794         };
 795
 796         /* Check for minimal reset flags */
 797         if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
 798                 return -EINVAL;
 799         *flags ^= ETH_RESET_EFX_INVISIBLE;
 800         method = RESET_TYPE_INVISIBLE;
 801
 802         if (*flags & ETH_RESET_PHY) {
 803                 *flags ^= ETH_RESET_PHY;
 804                 method = RESET_TYPE_ALL;
 805         }
 806
 807         if ((*flags & efx->type->reset_world_flags) ==
 808             efx->type->reset_world_flags) {
 809                 *flags ^= efx->type->reset_world_flags;
 810                 method = RESET_TYPE_WORLD;
 811         }
 812
 813         return efx_reset(efx, method);
 814 }
 815
 816 static int
 817 efx_ethtool_get_rxnfc(struct net_device *net_dev,
 818                       struct ethtool_rxnfc *info, void *rules __always_unused)
 819 {
 820         struct efx_nic *efx = netdev_priv(net_dev);
 821
 822         switch (info->cmd) {
 823         case ETHTOOL_GRXRINGS:
 824                 info->data = efx->n_rx_channels;
 825                 return 0;
 826
 827         case ETHTOOL_GRXFH: {
 828                 unsigned min_revision = 0;
 829
 830                 info->data = 0;
 831                 switch (info->flow_type) {
 832                 case TCP_V4_FLOW:
 833                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 834                         /* fall through */
 835                 case UDP_V4_FLOW:
 836                 case SCTP_V4_FLOW:
 837                 case AH_ESP_V4_FLOW:
 838                 case IPV4_FLOW:
 839                         info->data |= RXH_IP_SRC | RXH_IP_DST;
 840                         min_revision = EFX_REV_FALCON_B0;
 841                         break;
 842                 case TCP_V6_FLOW:
 843                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 844                         /* fall through */
 845                 case UDP_V6_FLOW:
 846                 case SCTP_V6_FLOW:
 847                 case AH_ESP_V6_FLOW:
 848                 case IPV6_FLOW:
 849                         info->data |= RXH_IP_SRC | RXH_IP_DST;
 850                         min_revision = EFX_REV_SIENA_A0;
 851                         break;
 852                 default:
 853                         break;
 854                 }
 855                 if (efx_nic_rev(efx) < min_revision)
 856                         info->data = 0;
 857                 return 0;
 858         }
 859
 860         default:
 861                 return -EOPNOTSUPP;
 862         }
 863 }
 864
 865 static int efx_ethtool_set_rx_ntuple(struct net_device *net_dev,
 866                                      struct ethtool_rx_ntuple *ntuple)
 867 {
 868         struct efx_nic *efx = netdev_priv(net_dev);
 869         struct ethtool_tcpip4_spec *ip_entry = &ntuple->fs.h_u.tcp_ip4_spec;
 870         struct ethtool_tcpip4_spec *ip_mask = &ntuple->fs.m_u.tcp_ip4_spec;
 871         struct ethhdr *mac_entry = &ntuple->fs.h_u.ether_spec;
 872         struct ethhdr *mac_mask = &ntuple->fs.m_u.ether_spec;
 873         struct efx_filter_spec filter;
 874         int rc;
 875
 876         /* Range-check action */
 877         if (ntuple->fs.action < ETHTOOL_RXNTUPLE_ACTION_CLEAR ||
 878             ntuple->fs.action >= (s32)efx->n_rx_channels)
 879                 return -EINVAL;
 880
 881         if (~ntuple->fs.data_mask)
 882                 return -EINVAL;
 883
 884         efx_filter_init_rx(&filter, EFX_FILTER_PRI_MANUAL, 0,
 885                            (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP) ?
 886                            0xfff : ntuple->fs.action);
 887
 888         switch (ntuple->fs.flow_type) {
 889         case TCP_V4_FLOW:
 890         case UDP_V4_FLOW: {
 891                 u8 proto = (ntuple->fs.flow_type == TCP_V4_FLOW ?
 892                             IPPROTO_TCP : IPPROTO_UDP);
 893
 894                 /* Must match all of destination, */
 895                 if (ip_mask->ip4dst | ip_mask->pdst)
 896                         return -EINVAL;
 897                 /* all or none of source, */
 898                 if ((ip_mask->ip4src | ip_mask->psrc) &&
 899                     ((__force u32)~ip_mask->ip4src |
 900                      (__force u16)~ip_mask->psrc))
 901                         return -EINVAL;
 902                 /* and nothing else */
 903                 if ((u8)~ip_mask->tos | (u16)~ntuple->fs.vlan_tag_mask)
 904                         return -EINVAL;
 905
 906                 if (!ip_mask->ip4src)
 907                         rc = efx_filter_set_ipv4_full(&filter, proto,
 908                                                       ip_entry->ip4dst,
 909                                                       ip_entry->pdst,
 910                                                       ip_entry->ip4src,
 911                                                       ip_entry->psrc);
 912                 else
 913                         rc = efx_filter_set_ipv4_local(&filter, proto,
 914                                                        ip_entry->ip4dst,
 915                                                        ip_entry->pdst);
 916                 if (rc)
 917                         return rc;
 918                 break;
 919         }
 920
 921         case ETHER_FLOW:
 922                 /* Must match all of destination, */
 923                 if (!is_zero_ether_addr(mac_mask->h_dest))
 924                         return -EINVAL;
 925                 /* all or none of VID, */
 926                 if (ntuple->fs.vlan_tag_mask != 0xf000 &&
 927                     ntuple->fs.vlan_tag_mask != 0xffff)
 928                         return -EINVAL;
 929                 /* and nothing else */
 930                 if (!is_broadcast_ether_addr(mac_mask->h_source) ||
 931                     mac_mask->h_proto != htons(0xffff))
 932                         return -EINVAL;
 933
 934                 rc = efx_filter_set_eth_local(
 935                         &filter,
 936                         (ntuple->fs.vlan_tag_mask == 0xf000) ?
 937                         ntuple->fs.vlan_tag : EFX_FILTER_VID_UNSPEC,
 938                         mac_entry->h_dest);
 939                 if (rc)
 940                         return rc;
 941                 break;
 942
 943         default:
 944                 return -EINVAL;
 945         }
 946
 947         if (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_CLEAR)
 948                 return efx_filter_remove_filter(efx, &filter);
 949         else
 950                 return efx_filter_insert_filter(efx, &filter, true);
 951 }
 952
 953 static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev,
 954                                       struct ethtool_rxfh_indir *indir)
 955 {
 956         struct efx_nic *efx = netdev_priv(net_dev);
 957         size_t copy_size =
 958                 min_t(size_t, indir->size, ARRAY_SIZE(efx->rx_indir_table));
 959
 960         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 961                 return -EOPNOTSUPP;
 962
 963         indir->size = ARRAY_SIZE(efx->rx_indir_table);
 964         memcpy(indir->ring_index, efx->rx_indir_table,
 965                copy_size * sizeof(indir->ring_index[0]));
 966         return 0;
 967 }
 968
 969 static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
 970                                       const struct ethtool_rxfh_indir *indir)
 971 {
 972         struct efx_nic *efx = netdev_priv(net_dev);
 973         size_t i;
 974
 975         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 976                 return -EOPNOTSUPP;
 977
 978         /* Validate size and indices */
 979         if (indir->size != ARRAY_SIZE(efx->rx_indir_table))
 980                 return -EINVAL;
 981         for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++)
 982                 if (indir->ring_index[i] >= efx->n_rx_channels)
 983                         return -EINVAL;
 984
 985         memcpy(efx->rx_indir_table, indir->ring_index,
 986                sizeof(efx->rx_indir_table));
 987         efx_nic_push_rx_indir_table(efx);
 988         return 0;
 989 }
 990
 991 const struct ethtool_ops efx_ethtool_ops = {
 992         .get_settings           = efx_ethtool_get_settings,
 993         .set_settings           = efx_ethtool_set_settings,
 994         .get_drvinfo            = efx_ethtool_get_drvinfo,
 995         .get_regs_len           = efx_ethtool_get_regs_len,
 996         .get_regs               = efx_ethtool_get_regs,
 997         .get_msglevel           = efx_ethtool_get_msglevel,
 998         .set_msglevel           = efx_ethtool_set_msglevel,
 999         .nway_reset             = efx_ethtool_nway_reset,
1000         .get_link               = ethtool_op_get_link,
1001         .get_coalesce           = efx_ethtool_get_coalesce,
1002         .set_coalesce           = efx_ethtool_set_coalesce,
1003         .get_ringparam          = efx_ethtool_get_ringparam,
1004         .set_ringparam          = efx_ethtool_set_ringparam,
1005         .get_pauseparam         = efx_ethtool_get_pauseparam,
1006         .set_pauseparam         = efx_ethtool_set_pauseparam,
1007         .get_sset_count         = efx_ethtool_get_sset_count,
1008         .self_test              = efx_ethtool_self_test,
1009         .get_strings            = efx_ethtool_get_strings,
1010         .phys_id                = efx_ethtool_phys_id,
1011         .get_ethtool_stats      = efx_ethtool_get_stats,
1012         .get_wol                = efx_ethtool_get_wol,
1013         .set_wol                = efx_ethtool_set_wol,
1014         .reset                  = efx_ethtool_reset,
1015         .get_rxnfc              = efx_ethtool_get_rxnfc,
1016         .set_rx_ntuple          = efx_ethtool_set_rx_ntuple,
1017         .get_rxfh_indir         = efx_ethtool_get_rxfh_indir,
1018         .set_rxfh_indir         = efx_ethtool_set_rxfh_indir,
1019 };