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,
 182                                enum ethtool_phys_id_state state)
 183 {
 184         struct efx_nic *efx = netdev_priv(net_dev);
 185         enum efx_led_mode mode;
 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         default:
 198                 return -EINVAL;
 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                 ecmd->speed = 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 (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 238                 netif_dbg(efx, drv, efx->net_dev,
 239                           "rejecting unsupported 1000Mbps HD setting\n");
 240                 return -EINVAL;
 241         }
 242
 243         mutex_lock(&efx->mac_lock);
 244         rc = efx->phy_op->set_settings(efx, ecmd);
 245         mutex_unlock(&efx->mac_lock);
 246         return rc;
 247 }
 248
 249 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 250                                     struct ethtool_drvinfo *info)
 251 {
 252         struct efx_nic *efx = netdev_priv(net_dev);
 253
 254         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 255         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 256         if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
 257                 efx_mcdi_print_fwver(efx, info->fw_version,
 258                                      sizeof(info->fw_version));
 259         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 260 }
 261
 262 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
 263 {
 264         return efx_nic_get_regs_len(netdev_priv(net_dev));
 265 }
 266
 267 static void efx_ethtool_get_regs(struct net_device *net_dev,
 268                                  struct ethtool_regs *regs, void *buf)
 269 {
 270         struct efx_nic *efx = netdev_priv(net_dev);
 271
 272         regs->version = efx->type->revision;
 273         efx_nic_get_regs(efx, buf);
 274 }
 275
 276 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
 277 {
 278         struct efx_nic *efx = netdev_priv(net_dev);
 279         return efx->msg_enable;
 280 }
 281
 282 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
 283 {
 284         struct efx_nic *efx = netdev_priv(net_dev);
 285         efx->msg_enable = msg_enable;
 286 }
 287
 288 /**
 289  * efx_fill_test - fill in an individual self-test entry
 290  * @test_index:         Index of the test
 291  * @strings:            Ethtool strings, or %NULL
 292  * @data:               Ethtool test results, or %NULL
 293  * @test:               Pointer to test result (used only if data != %NULL)
 294  * @unit_format:        Unit name format (e.g. "chan\%d")
 295  * @unit_id:            Unit id (e.g. 0 for "chan0")
 296  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 297  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 298  *
 299  * Fill in an individual self-test entry.
 300  */
 301 static void efx_fill_test(unsigned int test_index,
 302                           struct ethtool_string *strings, u64 *data,
 303                           int *test, const char *unit_format, int unit_id,
 304                           const char *test_format, const char *test_id)
 305 {
 306         struct ethtool_string unit_str, test_str;
 307
 308         /* Fill data value, if applicable */
 309         if (data)
 310                 data[test_index] = *test;
 311
 312         /* Fill string, if applicable */
 313         if (strings) {
 314                 if (strchr(unit_format, '%'))
 315                         snprintf(unit_str.name, sizeof(unit_str.name),
 316                                  unit_format, unit_id);
 317                 else
 318                         strcpy(unit_str.name, unit_format);
 319                 snprintf(test_str.name, sizeof(test_str.name),
 320                          test_format, test_id);
 321                 snprintf(strings[test_index].name,
 322                          sizeof(strings[test_index].name),
 323                          "%-6s %-24s", unit_str.name, test_str.name);
 324         }
 325 }
 326
 327 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 328 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 329 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 330 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 331         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 332
 333 /**
 334  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 335  * @efx:                Efx NIC
 336  * @lb_tests:           Efx loopback self-test results structure
 337  * @mode:               Loopback test mode
 338  * @test_index:         Starting index of the test
 339  * @strings:            Ethtool strings, or %NULL
 340  * @data:               Ethtool test results, or %NULL
 341  */
 342 static int efx_fill_loopback_test(struct efx_nic *efx,
 343                                   struct efx_loopback_self_tests *lb_tests,
 344                                   enum efx_loopback_mode mode,
 345                                   unsigned int test_index,
 346                                   struct ethtool_string *strings, u64 *data)
 347 {
 348         struct efx_channel *channel = efx_get_channel(efx, 0);
 349         struct efx_tx_queue *tx_queue;
 350
 351         efx_for_each_channel_tx_queue(tx_queue, channel) {
 352                 efx_fill_test(test_index++, strings, data,
 353                               &lb_tests->tx_sent[tx_queue->queue],
 354                               EFX_TX_QUEUE_NAME(tx_queue),
 355                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 356                 efx_fill_test(test_index++, strings, data,
 357                               &lb_tests->tx_done[tx_queue->queue],
 358                               EFX_TX_QUEUE_NAME(tx_queue),
 359                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 360         }
 361         efx_fill_test(test_index++, strings, data,
 362                       &lb_tests->rx_good,
 363                       "rx", 0,
 364                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 365         efx_fill_test(test_index++, strings, data,
 366                       &lb_tests->rx_bad,
 367                       "rx", 0,
 368                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 369
 370         return test_index;
 371 }
 372
 373 /**
 374  * efx_ethtool_fill_self_tests - get self-test details
 375  * @efx:                Efx NIC
 376  * @tests:              Efx self-test results structure, or %NULL
 377  * @strings:            Ethtool strings, or %NULL
 378  * @data:               Ethtool test results, or %NULL
 379  */
 380 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 381                                        struct efx_self_tests *tests,
 382                                        struct ethtool_string *strings,
 383                                        u64 *data)
 384 {
 385         struct efx_channel *channel;
 386         unsigned int n = 0, i;
 387         enum efx_loopback_mode mode;
 388
 389         efx_fill_test(n++, strings, data, &tests->phy_alive,
 390                       "phy", 0, "alive", NULL);
 391         efx_fill_test(n++, strings, data, &tests->nvram,
 392                       "core", 0, "nvram", NULL);
 393         efx_fill_test(n++, strings, data, &tests->interrupt,
 394                       "core", 0, "interrupt", NULL);
 395
 396         /* Event queues */
 397         efx_for_each_channel(channel, efx) {
 398                 efx_fill_test(n++, strings, data,
 399                               &tests->eventq_dma[channel->channel],
 400                               EFX_CHANNEL_NAME(channel),
 401                               "eventq.dma", NULL);
 402                 efx_fill_test(n++, strings, data,
 403                               &tests->eventq_int[channel->channel],
 404                               EFX_CHANNEL_NAME(channel),
 405                               "eventq.int", NULL);
 406                 efx_fill_test(n++, strings, data,
 407                               &tests->eventq_poll[channel->channel],
 408                               EFX_CHANNEL_NAME(channel),
 409                               "eventq.poll", NULL);
 410         }
 411
 412         efx_fill_test(n++, strings, data, &tests->registers,
 413                       "core", 0, "registers", NULL);
 414
 415         if (efx->phy_op->run_tests != NULL) {
 416                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
 417
 418                 for (i = 0; true; ++i) {
 419                         const char *name;
 420
 421                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 422                         name = efx->phy_op->test_name(efx, i);
 423                         if (name == NULL)
 424                                 break;
 425
 426                         efx_fill_test(n++, strings, data, &tests->phy_ext[i],
 427                                       "phy", 0, name, NULL);
 428                 }
 429         }
 430
 431         /* Loopback tests */
 432         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 433                 if (!(efx->loopback_modes & (1 << mode)))
 434                         continue;
 435                 n = efx_fill_loopback_test(efx,
 436                                            &tests->loopback[mode], mode, n,
 437                                            strings, data);
 438         }
 439
 440         return n;
 441 }
 442
 443 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 444                                       int string_set)
 445 {
 446         switch (string_set) {
 447         case ETH_SS_STATS:
 448                 return EFX_ETHTOOL_NUM_STATS;
 449         case ETH_SS_TEST:
 450                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 451                                                    NULL, NULL, NULL);
 452         default:
 453                 return -EINVAL;
 454         }
 455 }
 456
 457 static void efx_ethtool_get_strings(struct net_device *net_dev,
 458                                     u32 string_set, u8 *strings)
 459 {
 460         struct efx_nic *efx = netdev_priv(net_dev);
 461         struct ethtool_string *ethtool_strings =
 462                 (struct ethtool_string *)strings;
 463         int i;
 464
 465         switch (string_set) {
 466         case ETH_SS_STATS:
 467                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 468                         strncpy(ethtool_strings[i].name,
 469                                 efx_ethtool_stats[i].name,
 470                                 sizeof(ethtool_strings[i].name));
 471                 break;
 472         case ETH_SS_TEST:
 473                 efx_ethtool_fill_self_tests(efx, NULL,
 474                                             ethtool_strings, NULL);
 475                 break;
 476         default:
 477                 /* No other string sets */
 478                 break;
 479         }
 480 }
 481
 482 static void efx_ethtool_get_stats(struct net_device *net_dev,
 483                                   struct ethtool_stats *stats,
 484                                   u64 *data)
 485 {
 486         struct efx_nic *efx = netdev_priv(net_dev);
 487         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 488         struct efx_ethtool_stat *stat;
 489         struct efx_channel *channel;
 490         struct efx_tx_queue *tx_queue;
 491         struct rtnl_link_stats64 temp;
 492         int i;
 493
 494         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 495
 496         /* Update MAC and NIC statistics */
 497         dev_get_stats(net_dev, &temp);
 498
 499         /* Fill detailed statistics buffer */
 500         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 501                 stat = &efx_ethtool_stats[i];
 502                 switch (stat->source) {
 503                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 504                         data[i] = stat->get_stat((void *)mac_stats +
 505                                                  stat->offset);
 506                         break;
 507                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 508                         data[i] = stat->get_stat((void *)efx + stat->offset);
 509                         break;
 510                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 511                         data[i] = 0;
 512                         efx_for_each_channel(channel, efx)
 513                                 data[i] += stat->get_stat((void *)channel +
 514                                                           stat->offset);
 515                         break;
 516                 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
 517                         data[i] = 0;
 518                         efx_for_each_channel(channel, efx) {
 519                                 efx_for_each_channel_tx_queue(tx_queue, channel)
 520                                         data[i] +=
 521                                                 stat->get_stat((void *)tx_queue
 522                                                                + stat->offset);
 523                         }
 524                         break;
 525                 }
 526         }
 527 }
 528
 529 static void efx_ethtool_self_test(struct net_device *net_dev,
 530                                   struct ethtool_test *test, u64 *data)
 531 {
 532         struct efx_nic *efx = netdev_priv(net_dev);
 533         struct efx_self_tests *efx_tests;
 534         int already_up;
 535         int rc = -ENOMEM;
 536
 537         efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
 538         if (!efx_tests)
 539                 goto fail;
 540
 541
 542         ASSERT_RTNL();
 543         if (efx->state != STATE_RUNNING) {
 544                 rc = -EIO;
 545                 goto fail1;
 546         }
 547
 548         netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
 549                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 550
 551         /* We need rx buffers and interrupts. */
 552         already_up = (efx->net_dev->flags & IFF_UP);
 553         if (!already_up) {
 554                 rc = dev_open(efx->net_dev);
 555                 if (rc) {
 556                         netif_err(efx, drv, efx->net_dev,
 557                                   "failed opening device.\n");
 558                         goto fail1;
 559                 }
 560         }
 561
 562         rc = efx_selftest(efx, efx_tests, test->flags);
 563
 564         if (!already_up)
 565                 dev_close(efx->net_dev);
 566
 567         netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
 568                    rc == 0 ? "passed" : "failed",
 569                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 570
 571 fail1:
 572         /* Fill ethtool results structures */
 573         efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
 574         kfree(efx_tests);
 575 fail:
 576         if (rc)
 577                 test->flags |= ETH_TEST_FL_FAILED;
 578 }
 579
 580 /* Restart autonegotiation */
 581 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 582 {
 583         struct efx_nic *efx = netdev_priv(net_dev);
 584
 585         return mdio45_nway_restart(&efx->mdio);
 586 }
 587
 588 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 589                                     struct ethtool_coalesce *coalesce)
 590 {
 591         struct efx_nic *efx = netdev_priv(net_dev);
 592         struct efx_channel *channel;
 593
 594         memset(coalesce, 0, sizeof(*coalesce));
 595
 596         /* Find lowest IRQ moderation across all used TX queues */
 597         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 598         efx_for_each_channel(channel, efx) {
 599                 if (!efx_channel_has_tx_queues(channel))
 600                         continue;
 601                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 602                         if (channel->channel < efx->n_rx_channels)
 603                                 coalesce->tx_coalesce_usecs_irq =
 604                                         channel->irq_moderation;
 605                         else
 606                                 coalesce->tx_coalesce_usecs_irq = 0;
 607                 }
 608         }
 609
 610         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
 611         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
 612
 613         coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 614         coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 615
 616         return 0;
 617 }
 618
 619 /* Set coalescing parameters
 620  * The difficulties occur for shared channels
 621  */
 622 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 623                                     struct ethtool_coalesce *coalesce)
 624 {
 625         struct efx_nic *efx = netdev_priv(net_dev);
 626         struct efx_channel *channel;
 627         unsigned tx_usecs, rx_usecs, adaptive;
 628
 629         if (coalesce->use_adaptive_tx_coalesce)
 630                 return -EOPNOTSUPP;
 631
 632         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 633                 netif_err(efx, drv, efx->net_dev, "invalid coalescing setting. "
 634                           "Only rx/tx_coalesce_usecs_irq are supported\n");
 635                 return -EOPNOTSUPP;
 636         }
 637
 638         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 639         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 640         adaptive = coalesce->use_adaptive_rx_coalesce;
 641
 642         /* If the channel is shared only allow RX parameters to be set */
 643         efx_for_each_channel(channel, efx) {
 644                 if (efx_channel_has_rx_queue(channel) &&
 645                     efx_channel_has_tx_queues(channel) &&
 646                     tx_usecs) {
 647                         netif_err(efx, drv, efx->net_dev, "Channel is shared. "
 648                                   "Only RX coalescing may be set\n");
 649                         return -EOPNOTSUPP;
 650                 }
 651         }
 652
 653         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
 654         efx_for_each_channel(channel, efx)
 655                 efx->type->push_irq_moderation(channel);
 656
 657         return 0;
 658 }
 659
 660 static void efx_ethtool_get_ringparam(struct net_device *net_dev,
 661                                       struct ethtool_ringparam *ring)
 662 {
 663         struct efx_nic *efx = netdev_priv(net_dev);
 664
 665         ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
 666         ring->tx_max_pending = EFX_MAX_DMAQ_SIZE;
 667         ring->rx_mini_max_pending = 0;
 668         ring->rx_jumbo_max_pending = 0;
 669         ring->rx_pending = efx->rxq_entries;
 670         ring->tx_pending = efx->txq_entries;
 671         ring->rx_mini_pending = 0;
 672         ring->rx_jumbo_pending = 0;
 673 }
 674
 675 static int efx_ethtool_set_ringparam(struct net_device *net_dev,
 676                                      struct ethtool_ringparam *ring)
 677 {
 678         struct efx_nic *efx = netdev_priv(net_dev);
 679
 680         if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
 681             ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
 682             ring->tx_pending > EFX_MAX_DMAQ_SIZE)
 683                 return -EINVAL;
 684
 685         if (ring->rx_pending < EFX_MIN_RING_SIZE ||
 686             ring->tx_pending < EFX_MIN_RING_SIZE) {
 687                 netif_err(efx, drv, efx->net_dev,
 688                           "TX and RX queues cannot be smaller than %ld\n",
 689                           EFX_MIN_RING_SIZE);
 690                 return -EINVAL;
 691         }
 692
 693         return efx_realloc_channels(efx, ring->rx_pending, ring->tx_pending);
 694 }
 695
 696 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 697                                       struct ethtool_pauseparam *pause)
 698 {
 699         struct efx_nic *efx = netdev_priv(net_dev);
 700         enum efx_fc_type wanted_fc, old_fc;
 701         u32 old_adv;
 702         bool reset;
 703         int rc = 0;
 704
 705         mutex_lock(&efx->mac_lock);
 706
 707         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 708                      (pause->tx_pause ? EFX_FC_TX : 0) |
 709                      (pause->autoneg ? EFX_FC_AUTO : 0));
 710
 711         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 712                 netif_dbg(efx, drv, efx->net_dev,
 713                           "Flow control unsupported: tx ON rx OFF\n");
 714                 rc = -EINVAL;
 715                 goto out;
 716         }
 717
 718         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
 719                 netif_dbg(efx, drv, efx->net_dev,
 720                           "Autonegotiation is disabled\n");
 721                 rc = -EINVAL;
 722                 goto out;
 723         }
 724
 725         /* TX flow control may automatically turn itself off if the
 726          * link partner (intermittently) stops responding to pause
 727          * frames. There isn't any indication that this has happened,
 728          * so the best we do is leave it up to the user to spot this
 729          * and fix it be cycling transmit flow control on this end. */
 730         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 731         if (EFX_WORKAROUND_11482(efx) && reset) {
 732                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 733                         /* Recover by resetting the EM block */
 734                         falcon_stop_nic_stats(efx);
 735                         falcon_drain_tx_fifo(efx);
 736                         efx->mac_op->reconfigure(efx);
 737                         falcon_start_nic_stats(efx);
 738                 } else {
 739                         /* Schedule a reset to recover */
 740                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 741                 }
 742         }
 743
 744         old_adv = efx->link_advertising;
 745         old_fc = efx->wanted_fc;
 746         efx_link_set_wanted_fc(efx, wanted_fc);
 747         if (efx->link_advertising != old_adv ||
 748             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 749                 rc = efx->phy_op->reconfigure(efx);
 750                 if (rc) {
 751                         netif_err(efx, drv, efx->net_dev,
 752                                   "Unable to advertise requested flow "
 753                                   "control setting\n");
 754                         goto out;
 755                 }
 756         }
 757
 758         /* Reconfigure the MAC. The PHY *may* generate a link state change event
 759          * if the user just changed the advertised capabilities, but there's no
 760          * harm doing this twice */
 761         efx->mac_op->reconfigure(efx);
 762
 763 out:
 764         mutex_unlock(&efx->mac_lock);
 765
 766         return rc;
 767 }
 768
 769 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 770                                        struct ethtool_pauseparam *pause)
 771 {
 772         struct efx_nic *efx = netdev_priv(net_dev);
 773
 774         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 775         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 776         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 777 }
 778
 779
 780 static void efx_ethtool_get_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->get_wol(efx, wol);
 785 }
 786
 787
 788 static int efx_ethtool_set_wol(struct net_device *net_dev,
 789                                struct ethtool_wolinfo *wol)
 790 {
 791         struct efx_nic *efx = netdev_priv(net_dev);
 792         return efx->type->set_wol(efx, wol->wolopts);
 793 }
 794
 795 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 796 {
 797         struct efx_nic *efx = netdev_priv(net_dev);
 798         enum reset_type method;
 799         enum {
 800                 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
 801                                            ETH_RESET_OFFLOAD | ETH_RESET_MAC)
 802         };
 803
 804         /* Check for minimal reset flags */
 805         if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
 806                 return -EINVAL;
 807         *flags ^= ETH_RESET_EFX_INVISIBLE;
 808         method = RESET_TYPE_INVISIBLE;
 809
 810         if (*flags & ETH_RESET_PHY) {
 811                 *flags ^= ETH_RESET_PHY;
 812                 method = RESET_TYPE_ALL;
 813         }
 814
 815         if ((*flags & efx->type->reset_world_flags) ==
 816             efx->type->reset_world_flags) {
 817                 *flags ^= efx->type->reset_world_flags;
 818                 method = RESET_TYPE_WORLD;
 819         }
 820
 821         return efx_reset(efx, method);
 822 }
 823
 824 static int
 825 efx_ethtool_get_rxnfc(struct net_device *net_dev,
 826                       struct ethtool_rxnfc *info, void *rules __always_unused)
 827 {
 828         struct efx_nic *efx = netdev_priv(net_dev);
 829
 830         switch (info->cmd) {
 831         case ETHTOOL_GRXRINGS:
 832                 info->data = efx->n_rx_channels;
 833                 return 0;
 834
 835         case ETHTOOL_GRXFH: {
 836                 unsigned min_revision = 0;
 837
 838                 info->data = 0;
 839                 switch (info->flow_type) {
 840                 case TCP_V4_FLOW:
 841                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 842                         /* fall through */
 843                 case UDP_V4_FLOW:
 844                 case SCTP_V4_FLOW:
 845                 case AH_ESP_V4_FLOW:
 846                 case IPV4_FLOW:
 847                         info->data |= RXH_IP_SRC | RXH_IP_DST;
 848                         min_revision = EFX_REV_FALCON_B0;
 849                         break;
 850                 case TCP_V6_FLOW:
 851                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 852                         /* fall through */
 853                 case UDP_V6_FLOW:
 854                 case SCTP_V6_FLOW:
 855                 case AH_ESP_V6_FLOW:
 856                 case IPV6_FLOW:
 857                         info->data |= RXH_IP_SRC | RXH_IP_DST;
 858                         min_revision = EFX_REV_SIENA_A0;
 859                         break;
 860                 default:
 861                         break;
 862                 }
 863                 if (efx_nic_rev(efx) < min_revision)
 864                         info->data = 0;
 865                 return 0;
 866         }
 867
 868         default:
 869                 return -EOPNOTSUPP;
 870         }
 871 }
 872
 873 static int efx_ethtool_set_rx_ntuple(struct net_device *net_dev,
 874                                      struct ethtool_rx_ntuple *ntuple)
 875 {
 876         struct efx_nic *efx = netdev_priv(net_dev);
 877         struct ethtool_tcpip4_spec *ip_entry = &ntuple->fs.h_u.tcp_ip4_spec;
 878         struct ethtool_tcpip4_spec *ip_mask = &ntuple->fs.m_u.tcp_ip4_spec;
 879         struct ethhdr *mac_entry = &ntuple->fs.h_u.ether_spec;
 880         struct ethhdr *mac_mask = &ntuple->fs.m_u.ether_spec;
 881         struct efx_filter_spec filter;
 882         int rc;
 883
 884         /* Range-check action */
 885         if (ntuple->fs.action < ETHTOOL_RXNTUPLE_ACTION_CLEAR ||
 886             ntuple->fs.action >= (s32)efx->n_rx_channels)
 887                 return -EINVAL;
 888
 889         if (~ntuple->fs.data_mask)
 890                 return -EINVAL;
 891
 892         efx_filter_init_rx(&filter, EFX_FILTER_PRI_MANUAL, 0,
 893                            (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP) ?
 894                            0xfff : ntuple->fs.action);
 895
 896         switch (ntuple->fs.flow_type) {
 897         case TCP_V4_FLOW:
 898         case UDP_V4_FLOW: {
 899                 u8 proto = (ntuple->fs.flow_type == TCP_V4_FLOW ?
 900                             IPPROTO_TCP : IPPROTO_UDP);
 901
 902                 /* Must match all of destination, */
 903                 if (ip_mask->ip4dst | ip_mask->pdst)
 904                         return -EINVAL;
 905                 /* all or none of source, */
 906                 if ((ip_mask->ip4src | ip_mask->psrc) &&
 907                     ((__force u32)~ip_mask->ip4src |
 908                      (__force u16)~ip_mask->psrc))
 909                         return -EINVAL;
 910                 /* and nothing else */
 911                 if ((u8)~ip_mask->tos | (u16)~ntuple->fs.vlan_tag_mask)
 912                         return -EINVAL;
 913
 914                 if (!ip_mask->ip4src)
 915                         rc = efx_filter_set_ipv4_full(&filter, proto,
 916                                                       ip_entry->ip4dst,
 917                                                       ip_entry->pdst,
 918                                                       ip_entry->ip4src,
 919                                                       ip_entry->psrc);
 920                 else
 921                         rc = efx_filter_set_ipv4_local(&filter, proto,
 922                                                        ip_entry->ip4dst,
 923                                                        ip_entry->pdst);
 924                 if (rc)
 925                         return rc;
 926                 break;
 927         }
 928
 929         case ETHER_FLOW:
 930                 /* Must match all of destination, */
 931                 if (!is_zero_ether_addr(mac_mask->h_dest))
 932                         return -EINVAL;
 933                 /* all or none of VID, */
 934                 if (ntuple->fs.vlan_tag_mask != 0xf000 &&
 935                     ntuple->fs.vlan_tag_mask != 0xffff)
 936                         return -EINVAL;
 937                 /* and nothing else */
 938                 if (!is_broadcast_ether_addr(mac_mask->h_source) ||
 939                     mac_mask->h_proto != htons(0xffff))
 940                         return -EINVAL;
 941
 942                 rc = efx_filter_set_eth_local(
 943                         &filter,
 944                         (ntuple->fs.vlan_tag_mask == 0xf000) ?
 945                         ntuple->fs.vlan_tag : EFX_FILTER_VID_UNSPEC,
 946                         mac_entry->h_dest);
 947                 if (rc)
 948                         return rc;
 949                 break;
 950
 951         default:
 952                 return -EINVAL;
 953         }
 954
 955         if (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_CLEAR)
 956                 return efx_filter_remove_filter(efx, &filter);
 957         else
 958                 return efx_filter_insert_filter(efx, &filter, true);
 959 }
 960
 961 static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev,
 962                                       struct ethtool_rxfh_indir *indir)
 963 {
 964         struct efx_nic *efx = netdev_priv(net_dev);
 965         size_t copy_size =
 966                 min_t(size_t, indir->size, ARRAY_SIZE(efx->rx_indir_table));
 967
 968         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 969                 return -EOPNOTSUPP;
 970
 971         indir->size = ARRAY_SIZE(efx->rx_indir_table);
 972         memcpy(indir->ring_index, efx->rx_indir_table,
 973                copy_size * sizeof(indir->ring_index[0]));
 974         return 0;
 975 }
 976
 977 static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
 978                                       const struct ethtool_rxfh_indir *indir)
 979 {
 980         struct efx_nic *efx = netdev_priv(net_dev);
 981         size_t i;
 982
 983         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 984                 return -EOPNOTSUPP;
 985
 986         /* Validate size and indices */
 987         if (indir->size != ARRAY_SIZE(efx->rx_indir_table))
 988                 return -EINVAL;
 989         for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++)
 990                 if (indir->ring_index[i] >= efx->n_rx_channels)
 991                         return -EINVAL;
 992
 993         memcpy(efx->rx_indir_table, indir->ring_index,
 994                sizeof(efx->rx_indir_table));
 995         efx_nic_push_rx_indir_table(efx);
 996         return 0;
 997 }
 998
 999 const struct ethtool_ops efx_ethtool_ops = {
1000         .get_settings           = efx_ethtool_get_settings,
1001         .set_settings           = efx_ethtool_set_settings,
1002         .get_drvinfo            = efx_ethtool_get_drvinfo,
1003         .get_regs_len           = efx_ethtool_get_regs_len,
1004         .get_regs               = efx_ethtool_get_regs,
1005         .get_msglevel           = efx_ethtool_get_msglevel,
1006         .set_msglevel           = efx_ethtool_set_msglevel,
1007         .nway_reset             = efx_ethtool_nway_reset,
1008         .get_link               = ethtool_op_get_link,
1009         .get_coalesce           = efx_ethtool_get_coalesce,
1010         .set_coalesce           = efx_ethtool_set_coalesce,
1011         .get_ringparam          = efx_ethtool_get_ringparam,
1012         .set_ringparam          = efx_ethtool_set_ringparam,
1013         .get_pauseparam         = efx_ethtool_get_pauseparam,
1014         .set_pauseparam         = efx_ethtool_set_pauseparam,
1015         .get_sset_count         = efx_ethtool_get_sset_count,
1016         .self_test              = efx_ethtool_self_test,
1017         .get_strings            = efx_ethtool_get_strings,
1018         .set_phys_id            = efx_ethtool_phys_id,
1019         .get_ethtool_stats      = efx_ethtool_get_stats,
1020         .get_wol                = efx_ethtool_get_wol,
1021         .set_wol                = efx_ethtool_set_wol,
1022         .reset                  = efx_ethtool_reset,
1023         .get_rxnfc              = efx_ethtool_get_rxnfc,
1024         .set_rx_ntuple          = efx_ethtool_set_rx_ntuple,
1025         .get_rxfh_indir         = efx_ethtool_get_rxfh_indir,
1026         .set_rxfh_indir         = efx_ethtool_set_rxfh_indir,
1027 };