drivers/net/ethernet/sfc/ethtool.c

   1 /****************************************************************************
   2  * Driver for Solarflare network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2013 Solarflare Communications Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #include <linux/netdevice.h>
  12 #include <linux/ethtool.h>
  13 #include <linux/rtnetlink.h>
  14 #include <linux/in.h>
  15 #include "net_driver.h"
  16 #include "workarounds.h"
  17 #include "selftest.h"
  18 #include "efx.h"
  19 #include "filter.h"
  20 #include "nic.h"
  21
  22 struct efx_sw_stat_desc {
  23         const char *name;
  24         enum {
  25                 EFX_ETHTOOL_STAT_SOURCE_nic,
  26                 EFX_ETHTOOL_STAT_SOURCE_channel,
  27                 EFX_ETHTOOL_STAT_SOURCE_tx_queue
  28         } source;
  29         unsigned offset;
  30         u64(*get_stat) (void *field); /* Reader function */
  31 };
  32
  33 /* Initialiser for a struct efx_sw_stat_desc with type-checking */
  34 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  35                                 get_stat_function) {                    \
  36         .name = #stat_name,                                             \
  37         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  38         .offset = ((((field_type *) 0) ==                               \
  39                       &((struct efx_##source_name *)0)->field) ?        \
  40                     offsetof(struct efx_##source_name, field) :         \
  41                     offsetof(struct efx_##source_name, field)),         \
  42         .get_stat = get_stat_function,                                  \
  43 }
  44
  45 static u64 efx_get_uint_stat(void *field)
  46 {
  47         return *(unsigned int *)field;
  48 }
  49
  50 static u64 efx_get_atomic_stat(void *field)
  51 {
  52         return atomic_read((atomic_t *) field);
  53 }
  54
  55 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  56         EFX_ETHTOOL_STAT(field, nic, field,                     \
  57                          atomic_t, efx_get_atomic_stat)
  58
  59 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
  60         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
  61                          unsigned int, efx_get_uint_stat)
  62
  63 #define EFX_ETHTOOL_UINT_TXQ_STAT(field)                        \
  64         EFX_ETHTOOL_STAT(tx_##field, tx_queue, field,           \
  65                          unsigned int, efx_get_uint_stat)
  66
  67 static const struct efx_sw_stat_desc efx_sw_stat_desc[] = {
  68         EFX_ETHTOOL_UINT_TXQ_STAT(merge_events),
  69         EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
  70         EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
  71         EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
  72         EFX_ETHTOOL_UINT_TXQ_STAT(tso_fallbacks),
  73         EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
  74         EFX_ETHTOOL_UINT_TXQ_STAT(pio_packets),
  75         EFX_ETHTOOL_UINT_TXQ_STAT(cb_packets),
  76         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
  77         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
  78         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
  79         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
  80         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_ip_hdr_chksum_err),
  81         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_tcp_udp_chksum_err),
  82         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_ip_hdr_chksum_err),
  83         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_tcp_udp_chksum_err),
  84         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_eth_crc_err),
  85         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
  86         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
  87         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events),
  88         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets),
  89 };
  90
  91 #define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc)
  92
  93 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
  94
  95 /**************************************************************************
  96  *
  97  * Ethtool operations
  98  *
  99  **************************************************************************
 100  */
 101
 102 /* Identify device by flashing LEDs */
 103 static int efx_ethtool_phys_id(struct net_device *net_dev,
 104                                enum ethtool_phys_id_state state)
 105 {
 106         struct efx_nic *efx = netdev_priv(net_dev);
 107         enum efx_led_mode mode = EFX_LED_DEFAULT;
 108
 109         switch (state) {
 110         case ETHTOOL_ID_ON:
 111                 mode = EFX_LED_ON;
 112                 break;
 113         case ETHTOOL_ID_OFF:
 114                 mode = EFX_LED_OFF;
 115                 break;
 116         case ETHTOOL_ID_INACTIVE:
 117                 mode = EFX_LED_DEFAULT;
 118                 break;
 119         case ETHTOOL_ID_ACTIVE:
 120                 return 1;       /* cycle on/off once per second */
 121         }
 122
 123         efx->type->set_id_led(efx, mode);
 124         return 0;
 125 }
 126
 127 /* This must be called with rtnl_lock held. */
 128 static int
 129 efx_ethtool_get_link_ksettings(struct net_device *net_dev,
 130                                struct ethtool_link_ksettings *cmd)
 131 {
 132         struct efx_nic *efx = netdev_priv(net_dev);
 133         struct efx_link_state *link_state = &efx->link_state;
 134
 135         mutex_lock(&efx->mac_lock);
 136         efx->phy_op->get_link_ksettings(efx, cmd);
 137         mutex_unlock(&efx->mac_lock);
 138
 139         /* Both MACs support pause frames (bidirectional and respond-only) */
 140         ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
 141         ethtool_link_ksettings_add_link_mode(cmd, supported, Asym_Pause);
 142
 143         if (LOOPBACK_INTERNAL(efx)) {
 144                 cmd->base.speed = link_state->speed;
 145                 cmd->base.duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
 146         }
 147
 148         return 0;
 149 }
 150
 151 /* This must be called with rtnl_lock held. */
 152 static int
 153 efx_ethtool_set_link_ksettings(struct net_device *net_dev,
 154                                const struct ethtool_link_ksettings *cmd)
 155 {
 156         struct efx_nic *efx = netdev_priv(net_dev);
 157         int rc;
 158
 159         /* GMAC does not support 1000Mbps HD */
 160         if ((cmd->base.speed == SPEED_1000) &&
 161             (cmd->base.duplex != DUPLEX_FULL)) {
 162                 netif_dbg(efx, drv, efx->net_dev,
 163                           "rejecting unsupported 1000Mbps HD setting\n");
 164                 return -EINVAL;
 165         }
 166
 167         mutex_lock(&efx->mac_lock);
 168         rc = efx->phy_op->set_link_ksettings(efx, cmd);
 169         mutex_unlock(&efx->mac_lock);
 170         return rc;
 171 }
 172
 173 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 174                                     struct ethtool_drvinfo *info)
 175 {
 176         struct efx_nic *efx = netdev_priv(net_dev);
 177
 178         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 179         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 180         efx_mcdi_print_fwver(efx, info->fw_version,
 181                              sizeof(info->fw_version));
 182         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 183 }
 184
 185 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
 186 {
 187         return efx_nic_get_regs_len(netdev_priv(net_dev));
 188 }
 189
 190 static void efx_ethtool_get_regs(struct net_device *net_dev,
 191                                  struct ethtool_regs *regs, void *buf)
 192 {
 193         struct efx_nic *efx = netdev_priv(net_dev);
 194
 195         regs->version = efx->type->revision;
 196         efx_nic_get_regs(efx, buf);
 197 }
 198
 199 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
 200 {
 201         struct efx_nic *efx = netdev_priv(net_dev);
 202         return efx->msg_enable;
 203 }
 204
 205 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
 206 {
 207         struct efx_nic *efx = netdev_priv(net_dev);
 208         efx->msg_enable = msg_enable;
 209 }
 210
 211 /**
 212  * efx_fill_test - fill in an individual self-test entry
 213  * @test_index:         Index of the test
 214  * @strings:            Ethtool strings, or %NULL
 215  * @data:               Ethtool test results, or %NULL
 216  * @test:               Pointer to test result (used only if data != %NULL)
 217  * @unit_format:        Unit name format (e.g. "chan\%d")
 218  * @unit_id:            Unit id (e.g. 0 for "chan0")
 219  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 220  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 221  *
 222  * Fill in an individual self-test entry.
 223  */
 224 static void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data,
 225                           int *test, const char *unit_format, int unit_id,
 226                           const char *test_format, const char *test_id)
 227 {
 228         char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN];
 229
 230         /* Fill data value, if applicable */
 231         if (data)
 232                 data[test_index] = *test;
 233
 234         /* Fill string, if applicable */
 235         if (strings) {
 236                 if (strchr(unit_format, '%'))
 237                         snprintf(unit_str, sizeof(unit_str),
 238                                  unit_format, unit_id);
 239                 else
 240                         strcpy(unit_str, unit_format);
 241                 snprintf(test_str, sizeof(test_str), test_format, test_id);
 242                 snprintf(strings + test_index * ETH_GSTRING_LEN,
 243                          ETH_GSTRING_LEN,
 244                          "%-6s %-24s", unit_str, test_str);
 245         }
 246 }
 247
 248 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 249 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 250 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 251 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 252         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 253
 254 /**
 255  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 256  * @efx:                Efx NIC
 257  * @lb_tests:           Efx loopback self-test results structure
 258  * @mode:               Loopback test mode
 259  * @test_index:         Starting index of the test
 260  * @strings:            Ethtool strings, or %NULL
 261  * @data:               Ethtool test results, or %NULL
 262  *
 263  * Fill in a block of loopback self-test entries.  Return new test
 264  * index.
 265  */
 266 static int efx_fill_loopback_test(struct efx_nic *efx,
 267                                   struct efx_loopback_self_tests *lb_tests,
 268                                   enum efx_loopback_mode mode,
 269                                   unsigned int test_index,
 270                                   u8 *strings, u64 *data)
 271 {
 272         struct efx_channel *channel =
 273                 efx_get_channel(efx, efx->tx_channel_offset);
 274         struct efx_tx_queue *tx_queue;
 275
 276         efx_for_each_channel_tx_queue(tx_queue, channel) {
 277                 efx_fill_test(test_index++, strings, data,
 278                               &lb_tests->tx_sent[tx_queue->queue],
 279                               EFX_TX_QUEUE_NAME(tx_queue),
 280                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 281                 efx_fill_test(test_index++, strings, data,
 282                               &lb_tests->tx_done[tx_queue->queue],
 283                               EFX_TX_QUEUE_NAME(tx_queue),
 284                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 285         }
 286         efx_fill_test(test_index++, strings, data,
 287                       &lb_tests->rx_good,
 288                       "rx", 0,
 289                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 290         efx_fill_test(test_index++, strings, data,
 291                       &lb_tests->rx_bad,
 292                       "rx", 0,
 293                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 294
 295         return test_index;
 296 }
 297
 298 /**
 299  * efx_ethtool_fill_self_tests - get self-test details
 300  * @efx:                Efx NIC
 301  * @tests:              Efx self-test results structure, or %NULL
 302  * @strings:            Ethtool strings, or %NULL
 303  * @data:               Ethtool test results, or %NULL
 304  *
 305  * Get self-test number of strings, strings, and/or test results.
 306  * Return number of strings (== number of test results).
 307  *
 308  * The reason for merging these three functions is to make sure that
 309  * they can never be inconsistent.
 310  */
 311 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 312                                        struct efx_self_tests *tests,
 313                                        u8 *strings, u64 *data)
 314 {
 315         struct efx_channel *channel;
 316         unsigned int n = 0, i;
 317         enum efx_loopback_mode mode;
 318
 319         efx_fill_test(n++, strings, data, &tests->phy_alive,
 320                       "phy", 0, "alive", NULL);
 321         efx_fill_test(n++, strings, data, &tests->nvram,
 322                       "core", 0, "nvram", NULL);
 323         efx_fill_test(n++, strings, data, &tests->interrupt,
 324                       "core", 0, "interrupt", NULL);
 325
 326         /* Event queues */
 327         efx_for_each_channel(channel, efx) {
 328                 efx_fill_test(n++, strings, data,
 329                               &tests->eventq_dma[channel->channel],
 330                               EFX_CHANNEL_NAME(channel),
 331                               "eventq.dma", NULL);
 332                 efx_fill_test(n++, strings, data,
 333                               &tests->eventq_int[channel->channel],
 334                               EFX_CHANNEL_NAME(channel),
 335                               "eventq.int", NULL);
 336         }
 337
 338         efx_fill_test(n++, strings, data, &tests->memory,
 339                       "core", 0, "memory", NULL);
 340         efx_fill_test(n++, strings, data, &tests->registers,
 341                       "core", 0, "registers", NULL);
 342
 343         if (efx->phy_op->run_tests != NULL) {
 344                 EFX_WARN_ON_PARANOID(efx->phy_op->test_name == NULL);
 345
 346                 for (i = 0; true; ++i) {
 347                         const char *name;
 348
 349                         EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 350                         name = efx->phy_op->test_name(efx, i);
 351                         if (name == NULL)
 352                                 break;
 353
 354                         efx_fill_test(n++, strings, data, &tests->phy_ext[i],
 355                                       "phy", 0, name, NULL);
 356                 }
 357         }
 358
 359         /* Loopback tests */
 360         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 361                 if (!(efx->loopback_modes & (1 << mode)))
 362                         continue;
 363                 n = efx_fill_loopback_test(efx,
 364                                            &tests->loopback[mode], mode, n,
 365                                            strings, data);
 366         }
 367
 368         return n;
 369 }
 370
 371 static size_t efx_describe_per_queue_stats(struct efx_nic *efx, u8 *strings)
 372 {
 373         size_t n_stats = 0;
 374         struct efx_channel *channel;
 375
 376         efx_for_each_channel(channel, efx) {
 377                 if (efx_channel_has_tx_queues(channel)) {
 378                         n_stats++;
 379                         if (strings != NULL) {
 380                                 snprintf(strings, ETH_GSTRING_LEN,
 381                                          "tx-%u.tx_packets",
 382                                          channel->tx_queue[0].queue /
 383                                          EFX_TXQ_TYPES);
 384
 385                                 strings += ETH_GSTRING_LEN;
 386                         }
 387                 }
 388         }
 389         efx_for_each_channel(channel, efx) {
 390                 if (efx_channel_has_rx_queue(channel)) {
 391                         n_stats++;
 392                         if (strings != NULL) {
 393                                 snprintf(strings, ETH_GSTRING_LEN,
 394                                          "rx-%d.rx_packets", channel->channel);
 395                                 strings += ETH_GSTRING_LEN;
 396                         }
 397                 }
 398         }
 399         return n_stats;
 400 }
 401
 402 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 403                                       int string_set)
 404 {
 405         struct efx_nic *efx = netdev_priv(net_dev);
 406
 407         switch (string_set) {
 408         case ETH_SS_STATS:
 409                 return efx->type->describe_stats(efx, NULL) +
 410                        EFX_ETHTOOL_SW_STAT_COUNT +
 411                        efx_describe_per_queue_stats(efx, NULL) +
 412                        efx_ptp_describe_stats(efx, NULL);
 413         case ETH_SS_TEST:
 414                 return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
 415         default:
 416                 return -EINVAL;
 417         }
 418 }
 419
 420 static void efx_ethtool_get_strings(struct net_device *net_dev,
 421                                     u32 string_set, u8 *strings)
 422 {
 423         struct efx_nic *efx = netdev_priv(net_dev);
 424         int i;
 425
 426         switch (string_set) {
 427         case ETH_SS_STATS:
 428                 strings += (efx->type->describe_stats(efx, strings) *
 429                             ETH_GSTRING_LEN);
 430                 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++)
 431                         strlcpy(strings + i * ETH_GSTRING_LEN,
 432                                 efx_sw_stat_desc[i].name, ETH_GSTRING_LEN);
 433                 strings += EFX_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN;
 434                 strings += (efx_describe_per_queue_stats(efx, strings) *
 435                             ETH_GSTRING_LEN);
 436                 efx_ptp_describe_stats(efx, strings);
 437                 break;
 438         case ETH_SS_TEST:
 439                 efx_ethtool_fill_self_tests(efx, NULL, strings, NULL);
 440                 break;
 441         default:
 442                 /* No other string sets */
 443                 break;
 444         }
 445 }
 446
 447 static void efx_ethtool_get_stats(struct net_device *net_dev,
 448                                   struct ethtool_stats *stats,
 449                                   u64 *data)
 450 {
 451         struct efx_nic *efx = netdev_priv(net_dev);
 452         const struct efx_sw_stat_desc *stat;
 453         struct efx_channel *channel;
 454         struct efx_tx_queue *tx_queue;
 455         struct efx_rx_queue *rx_queue;
 456         int i;
 457
 458         spin_lock_bh(&efx->stats_lock);
 459
 460         /* Get NIC statistics */
 461         data += efx->type->update_stats(efx, data, NULL);
 462
 463         /* Get software statistics */
 464         for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) {
 465                 stat = &efx_sw_stat_desc[i];
 466                 switch (stat->source) {
 467                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 468                         data[i] = stat->get_stat((void *)efx + stat->offset);
 469                         break;
 470                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 471                         data[i] = 0;
 472                         efx_for_each_channel(channel, efx)
 473                                 data[i] += stat->get_stat((void *)channel +
 474                                                           stat->offset);
 475                         break;
 476                 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
 477                         data[i] = 0;
 478                         efx_for_each_channel(channel, efx) {
 479                                 efx_for_each_channel_tx_queue(tx_queue, channel)
 480                                         data[i] +=
 481                                                 stat->get_stat((void *)tx_queue
 482                                                                + stat->offset);
 483                         }
 484                         break;
 485                 }
 486         }
 487         data += EFX_ETHTOOL_SW_STAT_COUNT;
 488
 489         spin_unlock_bh(&efx->stats_lock);
 490
 491         efx_for_each_channel(channel, efx) {
 492                 if (efx_channel_has_tx_queues(channel)) {
 493                         *data = 0;
 494                         efx_for_each_channel_tx_queue(tx_queue, channel) {
 495                                 *data += tx_queue->tx_packets;
 496                         }
 497                         data++;
 498                 }
 499         }
 500         efx_for_each_channel(channel, efx) {
 501                 if (efx_channel_has_rx_queue(channel)) {
 502                         *data = 0;
 503                         efx_for_each_channel_rx_queue(rx_queue, channel) {
 504                                 *data += rx_queue->rx_packets;
 505                         }
 506                         data++;
 507                 }
 508         }
 509
 510         efx_ptp_update_stats(efx, data);
 511 }
 512
 513 static void efx_ethtool_self_test(struct net_device *net_dev,
 514                                   struct ethtool_test *test, u64 *data)
 515 {
 516         struct efx_nic *efx = netdev_priv(net_dev);
 517         struct efx_self_tests *efx_tests;
 518         bool already_up;
 519         int rc = -ENOMEM;
 520
 521         efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
 522         if (!efx_tests)
 523                 goto fail;
 524
 525         if (efx->state != STATE_READY) {
 526                 rc = -EBUSY;
 527                 goto out;
 528         }
 529
 530         netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
 531                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 532
 533         /* We need rx buffers and interrupts. */
 534         already_up = (efx->net_dev->flags & IFF_UP);
 535         if (!already_up) {
 536                 rc = dev_open(efx->net_dev);
 537                 if (rc) {
 538                         netif_err(efx, drv, efx->net_dev,
 539                                   "failed opening device.\n");
 540                         goto out;
 541                 }
 542         }
 543
 544         rc = efx_selftest(efx, efx_tests, test->flags);
 545
 546         if (!already_up)
 547                 dev_close(efx->net_dev);
 548
 549         netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
 550                    rc == 0 ? "passed" : "failed",
 551                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 552
 553 out:
 554         efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
 555         kfree(efx_tests);
 556 fail:
 557         if (rc)
 558                 test->flags |= ETH_TEST_FL_FAILED;
 559 }
 560
 561 /* Restart autonegotiation */
 562 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 563 {
 564         struct efx_nic *efx = netdev_priv(net_dev);
 565
 566         return mdio45_nway_restart(&efx->mdio);
 567 }
 568
 569 /*
 570  * Each channel has a single IRQ and moderation timer, started by any
 571  * completion (or other event).  Unless the module parameter
 572  * separate_tx_channels is set, IRQs and moderation are therefore
 573  * shared between RX and TX completions.  In this case, when RX IRQ
 574  * moderation is explicitly changed then TX IRQ moderation is
 575  * automatically changed too, but otherwise we fail if the two values
 576  * are requested to be different.
 577  *
 578  * The hardware does not support a limit on the number of completions
 579  * before an IRQ, so we do not use the max_frames fields.  We should
 580  * report and require that max_frames == (usecs != 0), but this would
 581  * invalidate existing user documentation.
 582  *
 583  * The hardware does not have distinct settings for interrupt
 584  * moderation while the previous IRQ is being handled, so we should
 585  * not use the 'irq' fields.  However, an earlier developer
 586  * misunderstood the meaning of the 'irq' fields and the driver did
 587  * not support the standard fields.  To avoid invalidating existing
 588  * user documentation, we report and accept changes through either the
 589  * standard or 'irq' fields.  If both are changed at the same time, we
 590  * prefer the standard field.
 591  *
 592  * We implement adaptive IRQ moderation, but use a different algorithm
 593  * from that assumed in the definition of struct ethtool_coalesce.
 594  * Therefore we do not use any of the adaptive moderation parameters
 595  * in it.
 596  */
 597
 598 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 599                                     struct ethtool_coalesce *coalesce)
 600 {
 601         struct efx_nic *efx = netdev_priv(net_dev);
 602         unsigned int tx_usecs, rx_usecs;
 603         bool rx_adaptive;
 604
 605         efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive);
 606
 607         coalesce->tx_coalesce_usecs = tx_usecs;
 608         coalesce->tx_coalesce_usecs_irq = tx_usecs;
 609         coalesce->rx_coalesce_usecs = rx_usecs;
 610         coalesce->rx_coalesce_usecs_irq = rx_usecs;
 611         coalesce->use_adaptive_rx_coalesce = rx_adaptive;
 612
 613         return 0;
 614 }
 615
 616 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 617                                     struct ethtool_coalesce *coalesce)
 618 {
 619         struct efx_nic *efx = netdev_priv(net_dev);
 620         struct efx_channel *channel;
 621         unsigned int tx_usecs, rx_usecs;
 622         bool adaptive, rx_may_override_tx;
 623         int rc;
 624
 625         if (coalesce->use_adaptive_tx_coalesce)
 626                 return -EINVAL;
 627
 628         efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive);
 629
 630         if (coalesce->rx_coalesce_usecs != rx_usecs)
 631                 rx_usecs = coalesce->rx_coalesce_usecs;
 632         else
 633                 rx_usecs = coalesce->rx_coalesce_usecs_irq;
 634
 635         adaptive = coalesce->use_adaptive_rx_coalesce;
 636
 637         /* If channels are shared, TX IRQ moderation can be quietly
 638          * overridden unless it is changed from its old value.
 639          */
 640         rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs &&
 641                               coalesce->tx_coalesce_usecs_irq == tx_usecs);
 642         if (coalesce->tx_coalesce_usecs != tx_usecs)
 643                 tx_usecs = coalesce->tx_coalesce_usecs;
 644         else
 645                 tx_usecs = coalesce->tx_coalesce_usecs_irq;
 646
 647         rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive,
 648                                      rx_may_override_tx);
 649         if (rc != 0)
 650                 return rc;
 651
 652         efx_for_each_channel(channel, efx)
 653                 efx->type->push_irq_moderation(channel);
 654
 655         return 0;
 656 }
 657
 658 static void efx_ethtool_get_ringparam(struct net_device *net_dev,
 659                                       struct ethtool_ringparam *ring)
 660 {
 661         struct efx_nic *efx = netdev_priv(net_dev);
 662
 663         ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
 664         ring->tx_max_pending = EFX_TXQ_MAX_ENT(efx);
 665         ring->rx_pending = efx->rxq_entries;
 666         ring->tx_pending = efx->txq_entries;
 667 }
 668
 669 static int efx_ethtool_set_ringparam(struct net_device *net_dev,
 670                                      struct ethtool_ringparam *ring)
 671 {
 672         struct efx_nic *efx = netdev_priv(net_dev);
 673         u32 txq_entries;
 674
 675         if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
 676             ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
 677             ring->tx_pending > EFX_TXQ_MAX_ENT(efx))
 678                 return -EINVAL;
 679
 680         if (ring->rx_pending < EFX_RXQ_MIN_ENT) {
 681                 netif_err(efx, drv, efx->net_dev,
 682                           "RX queues cannot be smaller than %u\n",
 683                           EFX_RXQ_MIN_ENT);
 684                 return -EINVAL;
 685         }
 686
 687         txq_entries = max(ring->tx_pending, EFX_TXQ_MIN_ENT(efx));
 688         if (txq_entries != ring->tx_pending)
 689                 netif_warn(efx, drv, efx->net_dev,
 690                            "increasing TX queue size to minimum of %u\n",
 691                            txq_entries);
 692
 693         return efx_realloc_channels(efx, ring->rx_pending, txq_entries);
 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         u8 wanted_fc, old_fc;
 701         u32 old_adv;
 702         int rc = 0;
 703
 704         mutex_lock(&efx->mac_lock);
 705
 706         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 707                      (pause->tx_pause ? EFX_FC_TX : 0) |
 708                      (pause->autoneg ? EFX_FC_AUTO : 0));
 709
 710         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 711                 netif_dbg(efx, drv, efx->net_dev,
 712                           "Flow control unsupported: tx ON rx OFF\n");
 713                 rc = -EINVAL;
 714                 goto out;
 715         }
 716
 717         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising[0]) {
 718                 netif_dbg(efx, drv, efx->net_dev,
 719                           "Autonegotiation is disabled\n");
 720                 rc = -EINVAL;
 721                 goto out;
 722         }
 723
 724         /* Hook for Falcon bug 11482 workaround */
 725         if (efx->type->prepare_enable_fc_tx &&
 726             (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX))
 727                 efx->type->prepare_enable_fc_tx(efx);
 728
 729         old_adv = efx->link_advertising[0];
 730         old_fc = efx->wanted_fc;
 731         efx_link_set_wanted_fc(efx, wanted_fc);
 732         if (efx->link_advertising[0] != old_adv ||
 733             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 734                 rc = efx->phy_op->reconfigure(efx);
 735                 if (rc) {
 736                         netif_err(efx, drv, efx->net_dev,
 737                                   "Unable to advertise requested flow "
 738                                   "control setting\n");
 739                         goto out;
 740                 }
 741         }
 742
 743         /* Reconfigure the MAC. The PHY *may* generate a link state change event
 744          * if the user just changed the advertised capabilities, but there's no
 745          * harm doing this twice */
 746         efx_mac_reconfigure(efx);
 747
 748 out:
 749         mutex_unlock(&efx->mac_lock);
 750
 751         return rc;
 752 }
 753
 754 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 755                                        struct ethtool_pauseparam *pause)
 756 {
 757         struct efx_nic *efx = netdev_priv(net_dev);
 758
 759         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 760         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 761         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 762 }
 763
 764 static void efx_ethtool_get_wol(struct net_device *net_dev,
 765                                 struct ethtool_wolinfo *wol)
 766 {
 767         struct efx_nic *efx = netdev_priv(net_dev);
 768         return efx->type->get_wol(efx, wol);
 769 }
 770
 771
 772 static int efx_ethtool_set_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->set_wol(efx, wol->wolopts);
 777 }
 778
 779 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 780 {
 781         struct efx_nic *efx = netdev_priv(net_dev);
 782         int rc;
 783
 784         rc = efx->type->map_reset_flags(flags);
 785         if (rc < 0)
 786                 return rc;
 787
 788         return efx_reset(efx, rc);
 789 }
 790
 791 /* MAC address mask including only I/G bit */
 792 static const u8 mac_addr_ig_mask[ETH_ALEN] __aligned(2) = {0x01, 0, 0, 0, 0, 0};
 793
 794 #define IP4_ADDR_FULL_MASK      ((__force __be32)~0)
 795 #define IP_PROTO_FULL_MASK      0xFF
 796 #define PORT_FULL_MASK          ((__force __be16)~0)
 797 #define ETHER_TYPE_FULL_MASK    ((__force __be16)~0)
 798
 799 static inline void ip6_fill_mask(__be32 *mask)
 800 {
 801         mask[0] = mask[1] = mask[2] = mask[3] = ~(__be32)0;
 802 }
 803
 804 static int efx_ethtool_get_class_rule(struct efx_nic *efx,
 805                                       struct ethtool_rx_flow_spec *rule,
 806                                       u32 *rss_context)
 807 {
 808         struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
 809         struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
 810         struct ethtool_usrip4_spec *uip_entry = &rule->h_u.usr_ip4_spec;
 811         struct ethtool_usrip4_spec *uip_mask = &rule->m_u.usr_ip4_spec;
 812         struct ethtool_tcpip6_spec *ip6_entry = &rule->h_u.tcp_ip6_spec;
 813         struct ethtool_tcpip6_spec *ip6_mask = &rule->m_u.tcp_ip6_spec;
 814         struct ethtool_usrip6_spec *uip6_entry = &rule->h_u.usr_ip6_spec;
 815         struct ethtool_usrip6_spec *uip6_mask = &rule->m_u.usr_ip6_spec;
 816         struct ethhdr *mac_entry = &rule->h_u.ether_spec;
 817         struct ethhdr *mac_mask = &rule->m_u.ether_spec;
 818         struct efx_filter_spec spec;
 819         int rc;
 820
 821         rc = efx_filter_get_filter_safe(efx, EFX_FILTER_PRI_MANUAL,
 822                                         rule->location, &spec);
 823         if (rc)
 824                 return rc;
 825
 826         if (spec.dmaq_id == EFX_FILTER_RX_DMAQ_ID_DROP)
 827                 rule->ring_cookie = RX_CLS_FLOW_DISC;
 828         else
 829                 rule->ring_cookie = spec.dmaq_id;
 830
 831         if ((spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) &&
 832             spec.ether_type == htons(ETH_P_IP) &&
 833             (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) &&
 834             (spec.ip_proto == IPPROTO_TCP || spec.ip_proto == IPPROTO_UDP) &&
 835             !(spec.match_flags &
 836               ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
 837                 EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
 838                 EFX_FILTER_MATCH_IP_PROTO |
 839                 EFX_FILTER_MATCH_LOC_PORT | EFX_FILTER_MATCH_REM_PORT))) {
 840                 rule->flow_type = ((spec.ip_proto == IPPROTO_TCP) ?
 841                                    TCP_V4_FLOW : UDP_V4_FLOW);
 842                 if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
 843                         ip_entry->ip4dst = spec.loc_host[0];
 844                         ip_mask->ip4dst = IP4_ADDR_FULL_MASK;
 845                 }
 846                 if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
 847                         ip_entry->ip4src = spec.rem_host[0];
 848                         ip_mask->ip4src = IP4_ADDR_FULL_MASK;
 849                 }
 850                 if (spec.match_flags & EFX_FILTER_MATCH_LOC_PORT) {
 851                         ip_entry->pdst = spec.loc_port;
 852                         ip_mask->pdst = PORT_FULL_MASK;
 853                 }
 854                 if (spec.match_flags & EFX_FILTER_MATCH_REM_PORT) {
 855                         ip_entry->psrc = spec.rem_port;
 856                         ip_mask->psrc = PORT_FULL_MASK;
 857                 }
 858         } else if ((spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) &&
 859             spec.ether_type == htons(ETH_P_IPV6) &&
 860             (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) &&
 861             (spec.ip_proto == IPPROTO_TCP || spec.ip_proto == IPPROTO_UDP) &&
 862             !(spec.match_flags &
 863               ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
 864                 EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
 865                 EFX_FILTER_MATCH_IP_PROTO |
 866                 EFX_FILTER_MATCH_LOC_PORT | EFX_FILTER_MATCH_REM_PORT))) {
 867                 rule->flow_type = ((spec.ip_proto == IPPROTO_TCP) ?
 868                                    TCP_V6_FLOW : UDP_V6_FLOW);
 869                 if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
 870                         memcpy(ip6_entry->ip6dst, spec.loc_host,
 871                                sizeof(ip6_entry->ip6dst));
 872                         ip6_fill_mask(ip6_mask->ip6dst);
 873                 }
 874                 if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
 875                         memcpy(ip6_entry->ip6src, spec.rem_host,
 876                                sizeof(ip6_entry->ip6src));
 877                         ip6_fill_mask(ip6_mask->ip6src);
 878                 }
 879                 if (spec.match_flags & EFX_FILTER_MATCH_LOC_PORT) {
 880                         ip6_entry->pdst = spec.loc_port;
 881                         ip6_mask->pdst = PORT_FULL_MASK;
 882                 }
 883                 if (spec.match_flags & EFX_FILTER_MATCH_REM_PORT) {
 884                         ip6_entry->psrc = spec.rem_port;
 885                         ip6_mask->psrc = PORT_FULL_MASK;
 886                 }
 887         } else if (!(spec.match_flags &
 888                      ~(EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG |
 889                        EFX_FILTER_MATCH_REM_MAC | EFX_FILTER_MATCH_ETHER_TYPE |
 890                        EFX_FILTER_MATCH_OUTER_VID))) {
 891                 rule->flow_type = ETHER_FLOW;
 892                 if (spec.match_flags &
 893                     (EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG)) {
 894                         ether_addr_copy(mac_entry->h_dest, spec.loc_mac);
 895                         if (spec.match_flags & EFX_FILTER_MATCH_LOC_MAC)
 896                                 eth_broadcast_addr(mac_mask->h_dest);
 897                         else
 898                                 ether_addr_copy(mac_mask->h_dest,
 899                                                 mac_addr_ig_mask);
 900                 }
 901                 if (spec.match_flags & EFX_FILTER_MATCH_REM_MAC) {
 902                         ether_addr_copy(mac_entry->h_source, spec.rem_mac);
 903                         eth_broadcast_addr(mac_mask->h_source);
 904                 }
 905                 if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) {
 906                         mac_entry->h_proto = spec.ether_type;
 907                         mac_mask->h_proto = ETHER_TYPE_FULL_MASK;
 908                 }
 909         } else if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE &&
 910                    spec.ether_type == htons(ETH_P_IP) &&
 911                    !(spec.match_flags &
 912                      ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
 913                        EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
 914                        EFX_FILTER_MATCH_IP_PROTO))) {
 915                 rule->flow_type = IPV4_USER_FLOW;
 916                 uip_entry->ip_ver = ETH_RX_NFC_IP4;
 917                 if (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) {
 918                         uip_mask->proto = IP_PROTO_FULL_MASK;
 919                         uip_entry->proto = spec.ip_proto;
 920                 }
 921                 if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
 922                         uip_entry->ip4dst = spec.loc_host[0];
 923                         uip_mask->ip4dst = IP4_ADDR_FULL_MASK;
 924                 }
 925                 if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
 926                         uip_entry->ip4src = spec.rem_host[0];
 927                         uip_mask->ip4src = IP4_ADDR_FULL_MASK;
 928                 }
 929         } else if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE &&
 930                    spec.ether_type == htons(ETH_P_IPV6) &&
 931                    !(spec.match_flags &
 932                      ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
 933                        EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
 934                        EFX_FILTER_MATCH_IP_PROTO))) {
 935                 rule->flow_type = IPV6_USER_FLOW;
 936                 if (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) {
 937                         uip6_mask->l4_proto = IP_PROTO_FULL_MASK;
 938                         uip6_entry->l4_proto = spec.ip_proto;
 939                 }
 940                 if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
 941                         memcpy(uip6_entry->ip6dst, spec.loc_host,
 942                                sizeof(uip6_entry->ip6dst));
 943                         ip6_fill_mask(uip6_mask->ip6dst);
 944                 }
 945                 if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
 946                         memcpy(uip6_entry->ip6src, spec.rem_host,
 947                                sizeof(uip6_entry->ip6src));
 948                         ip6_fill_mask(uip6_mask->ip6src);
 949                 }
 950         } else {
 951                 /* The above should handle all filters that we insert */
 952                 WARN_ON(1);
 953                 return -EINVAL;
 954         }
 955
 956         if (spec.match_flags & EFX_FILTER_MATCH_OUTER_VID) {
 957                 rule->flow_type |= FLOW_EXT;
 958                 rule->h_ext.vlan_tci = spec.outer_vid;
 959                 rule->m_ext.vlan_tci = htons(0xfff);
 960         }
 961
 962         if (spec.flags & EFX_FILTER_FLAG_RX_RSS) {
 963                 rule->flow_type |= FLOW_RSS;
 964                 *rss_context = spec.rss_context;
 965         }
 966
 967         return rc;
 968 }
 969
 970 static int
 971 efx_ethtool_get_rxnfc(struct net_device *net_dev,
 972                       struct ethtool_rxnfc *info, u32 *rule_locs)
 973 {
 974         struct efx_nic *efx = netdev_priv(net_dev);
 975         u32 rss_context = 0;
 976         s32 rc = 0;
 977
 978         switch (info->cmd) {
 979         case ETHTOOL_GRXRINGS:
 980                 info->data = efx->n_rx_channels;
 981                 return 0;
 982
 983         case ETHTOOL_GRXFH: {
 984                 struct efx_rss_context *ctx = &efx->rss_context;
 985
 986                 mutex_lock(&efx->rss_lock);
 987                 if (info->flow_type & FLOW_RSS && info->rss_context) {
 988                         ctx = efx_find_rss_context_entry(efx, info->rss_context);
 989                         if (!ctx) {
 990                                 rc = -ENOENT;
 991                                 goto out_unlock;
 992                         }
 993                 }
 994                 info->data = 0;
 995                 if (!efx_rss_active(ctx)) /* No RSS */
 996                         goto out_unlock;
 997                 switch (info->flow_type & ~FLOW_RSS) {
 998                 case UDP_V4_FLOW:
 999                         if (ctx->rx_hash_udp_4tuple)
1000                                 /* fall through */
1001                 case TCP_V4_FLOW:
1002                                 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1003                         /* fall through */
1004                 case SCTP_V4_FLOW:
1005                 case AH_ESP_V4_FLOW:
1006                 case IPV4_FLOW:
1007                         info->data |= RXH_IP_SRC | RXH_IP_DST;
1008                         break;
1009                 case UDP_V6_FLOW:
1010                         if (ctx->rx_hash_udp_4tuple)
1011                                 /* fall through */
1012                 case TCP_V6_FLOW:
1013                                 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1014                         /* fall through */
1015                 case SCTP_V6_FLOW:
1016                 case AH_ESP_V6_FLOW:
1017                 case IPV6_FLOW:
1018                         info->data |= RXH_IP_SRC | RXH_IP_DST;
1019                         break;
1020                 default:
1021                         break;
1022                 }
1023 out_unlock:
1024                 mutex_unlock(&efx->rss_lock);
1025                 return rc;
1026         }
1027
1028         case ETHTOOL_GRXCLSRLCNT:
1029                 info->data = efx_filter_get_rx_id_limit(efx);
1030                 if (info->data == 0)
1031                         return -EOPNOTSUPP;
1032                 info->data |= RX_CLS_LOC_SPECIAL;
1033                 info->rule_cnt =
1034                         efx_filter_count_rx_used(efx, EFX_FILTER_PRI_MANUAL);
1035                 return 0;
1036
1037         case ETHTOOL_GRXCLSRULE:
1038                 if (efx_filter_get_rx_id_limit(efx) == 0)
1039                         return -EOPNOTSUPP;
1040                 rc = efx_ethtool_get_class_rule(efx, &info->fs, &rss_context);
1041                 if (rc < 0)
1042                         return rc;
1043                 if (info->fs.flow_type & FLOW_RSS)
1044                         info->rss_context = rss_context;
1045                 return 0;
1046
1047         case ETHTOOL_GRXCLSRLALL:
1048                 info->data = efx_filter_get_rx_id_limit(efx);
1049                 if (info->data == 0)
1050                         return -EOPNOTSUPP;
1051                 rc = efx_filter_get_rx_ids(efx, EFX_FILTER_PRI_MANUAL,
1052                                            rule_locs, info->rule_cnt);
1053                 if (rc < 0)
1054                         return rc;
1055                 info->rule_cnt = rc;
1056                 return 0;
1057
1058         default:
1059                 return -EOPNOTSUPP;
1060         }
1061 }
1062
1063 static inline bool ip6_mask_is_full(__be32 mask[4])
1064 {
1065         return !~(mask[0] & mask[1] & mask[2] & mask[3]);
1066 }
1067
1068 static inline bool ip6_mask_is_empty(__be32 mask[4])
1069 {
1070         return !(mask[0] | mask[1] | mask[2] | mask[3]);
1071 }
1072
1073 static int efx_ethtool_set_class_rule(struct efx_nic *efx,
1074                                       struct ethtool_rx_flow_spec *rule,
1075                                       u32 rss_context)
1076 {
1077         struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
1078         struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
1079         struct ethtool_usrip4_spec *uip_entry = &rule->h_u.usr_ip4_spec;
1080         struct ethtool_usrip4_spec *uip_mask = &rule->m_u.usr_ip4_spec;
1081         struct ethtool_tcpip6_spec *ip6_entry = &rule->h_u.tcp_ip6_spec;
1082         struct ethtool_tcpip6_spec *ip6_mask = &rule->m_u.tcp_ip6_spec;
1083         struct ethtool_usrip6_spec *uip6_entry = &rule->h_u.usr_ip6_spec;
1084         struct ethtool_usrip6_spec *uip6_mask = &rule->m_u.usr_ip6_spec;
1085         u32 flow_type = rule->flow_type & ~(FLOW_EXT | FLOW_RSS);
1086         struct ethhdr *mac_entry = &rule->h_u.ether_spec;
1087         struct ethhdr *mac_mask = &rule->m_u.ether_spec;
1088         enum efx_filter_flags flags = 0;
1089         struct efx_filter_spec spec;
1090         int rc;
1091
1092         /* Check that user wants us to choose the location */
1093         if (rule->location != RX_CLS_LOC_ANY)
1094                 return -EINVAL;
1095
1096         /* Range-check ring_cookie */
1097         if (rule->ring_cookie >= efx->n_rx_channels &&
1098             rule->ring_cookie != RX_CLS_FLOW_DISC)
1099                 return -EINVAL;
1100
1101         /* Check for unsupported extensions */
1102         if ((rule->flow_type & FLOW_EXT) &&
1103             (rule->m_ext.vlan_etype || rule->m_ext.data[0] ||
1104              rule->m_ext.data[1]))
1105                 return -EINVAL;
1106
1107         if (efx->rx_scatter)
1108                 flags |= EFX_FILTER_FLAG_RX_SCATTER;
1109         if (rule->flow_type & FLOW_RSS)
1110                 flags |= EFX_FILTER_FLAG_RX_RSS;
1111
1112         efx_filter_init_rx(&spec, EFX_FILTER_PRI_MANUAL, flags,
1113                            (rule->ring_cookie == RX_CLS_FLOW_DISC) ?
1114                            EFX_FILTER_RX_DMAQ_ID_DROP : rule->ring_cookie);
1115
1116         if (rule->flow_type & FLOW_RSS)
1117                 spec.rss_context = rss_context;
1118
1119         switch (flow_type) {
1120         case TCP_V4_FLOW:
1121         case UDP_V4_FLOW:
1122                 spec.match_flags = (EFX_FILTER_MATCH_ETHER_TYPE |
1123                                     EFX_FILTER_MATCH_IP_PROTO);
1124                 spec.ether_type = htons(ETH_P_IP);
1125                 spec.ip_proto = flow_type == TCP_V4_FLOW ? IPPROTO_TCP
1126                                                          : IPPROTO_UDP;
1127                 if (ip_mask->ip4dst) {
1128                         if (ip_mask->ip4dst != IP4_ADDR_FULL_MASK)
1129                                 return -EINVAL;
1130                         spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
1131                         spec.loc_host[0] = ip_entry->ip4dst;
1132                 }
1133                 if (ip_mask->ip4src) {
1134                         if (ip_mask->ip4src != IP4_ADDR_FULL_MASK)
1135                                 return -EINVAL;
1136                         spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
1137                         spec.rem_host[0] = ip_entry->ip4src;
1138                 }
1139                 if (ip_mask->pdst) {
1140                         if (ip_mask->pdst != PORT_FULL_MASK)
1141                                 return -EINVAL;
1142                         spec.match_flags |= EFX_FILTER_MATCH_LOC_PORT;
1143                         spec.loc_port = ip_entry->pdst;
1144                 }
1145                 if (ip_mask->psrc) {
1146                         if (ip_mask->psrc != PORT_FULL_MASK)
1147                                 return -EINVAL;
1148                         spec.match_flags |= EFX_FILTER_MATCH_REM_PORT;
1149                         spec.rem_port = ip_entry->psrc;
1150                 }
1151                 if (ip_mask->tos)
1152                         return -EINVAL;
1153                 break;
1154
1155         case TCP_V6_FLOW:
1156         case UDP_V6_FLOW:
1157                 spec.match_flags = (EFX_FILTER_MATCH_ETHER_TYPE |
1158                                     EFX_FILTER_MATCH_IP_PROTO);
1159                 spec.ether_type = htons(ETH_P_IPV6);
1160                 spec.ip_proto = flow_type == TCP_V6_FLOW ? IPPROTO_TCP
1161                                                          : IPPROTO_UDP;
1162                 if (!ip6_mask_is_empty(ip6_mask->ip6dst)) {
1163                         if (!ip6_mask_is_full(ip6_mask->ip6dst))
1164                                 return -EINVAL;
1165                         spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
1166                         memcpy(spec.loc_host, ip6_entry->ip6dst, sizeof(spec.loc_host));
1167                 }
1168                 if (!ip6_mask_is_empty(ip6_mask->ip6src)) {
1169                         if (!ip6_mask_is_full(ip6_mask->ip6src))
1170                                 return -EINVAL;
1171                         spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
1172                         memcpy(spec.rem_host, ip6_entry->ip6src, sizeof(spec.rem_host));
1173                 }
1174                 if (ip6_mask->pdst) {
1175                         if (ip6_mask->pdst != PORT_FULL_MASK)
1176                                 return -EINVAL;
1177                         spec.match_flags |= EFX_FILTER_MATCH_LOC_PORT;
1178                         spec.loc_port = ip6_entry->pdst;
1179                 }
1180                 if (ip6_mask->psrc) {
1181                         if (ip6_mask->psrc != PORT_FULL_MASK)
1182                                 return -EINVAL;
1183                         spec.match_flags |= EFX_FILTER_MATCH_REM_PORT;
1184                         spec.rem_port = ip6_entry->psrc;
1185                 }
1186                 if (ip6_mask->tclass)
1187                         return -EINVAL;
1188                 break;
1189
1190         case IPV4_USER_FLOW:
1191                 if (uip_mask->l4_4_bytes || uip_mask->tos || uip_mask->ip_ver ||
1192                     uip_entry->ip_ver != ETH_RX_NFC_IP4)
1193                         return -EINVAL;
1194                 spec.match_flags = EFX_FILTER_MATCH_ETHER_TYPE;
1195                 spec.ether_type = htons(ETH_P_IP);
1196                 if (uip_mask->ip4dst) {
1197                         if (uip_mask->ip4dst != IP4_ADDR_FULL_MASK)
1198                                 return -EINVAL;
1199                         spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
1200                         spec.loc_host[0] = uip_entry->ip4dst;
1201                 }
1202                 if (uip_mask->ip4src) {
1203                         if (uip_mask->ip4src != IP4_ADDR_FULL_MASK)
1204                                 return -EINVAL;
1205                         spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
1206                         spec.rem_host[0] = uip_entry->ip4src;
1207                 }
1208                 if (uip_mask->proto) {
1209                         if (uip_mask->proto != IP_PROTO_FULL_MASK)
1210                                 return -EINVAL;
1211                         spec.match_flags |= EFX_FILTER_MATCH_IP_PROTO;
1212                         spec.ip_proto = uip_entry->proto;
1213                 }
1214                 break;
1215
1216         case IPV6_USER_FLOW:
1217                 if (uip6_mask->l4_4_bytes || uip6_mask->tclass)
1218                         return -EINVAL;
1219                 spec.match_flags = EFX_FILTER_MATCH_ETHER_TYPE;
1220                 spec.ether_type = htons(ETH_P_IPV6);
1221                 if (!ip6_mask_is_empty(uip6_mask->ip6dst)) {
1222                         if (!ip6_mask_is_full(uip6_mask->ip6dst))
1223                                 return -EINVAL;
1224                         spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
1225                         memcpy(spec.loc_host, uip6_entry->ip6dst, sizeof(spec.loc_host));
1226                 }
1227                 if (!ip6_mask_is_empty(uip6_mask->ip6src)) {
1228                         if (!ip6_mask_is_full(uip6_mask->ip6src))
1229                                 return -EINVAL;
1230                         spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
1231                         memcpy(spec.rem_host, uip6_entry->ip6src, sizeof(spec.rem_host));
1232                 }
1233                 if (uip6_mask->l4_proto) {
1234                         if (uip6_mask->l4_proto != IP_PROTO_FULL_MASK)
1235                                 return -EINVAL;
1236                         spec.match_flags |= EFX_FILTER_MATCH_IP_PROTO;
1237                         spec.ip_proto = uip6_entry->l4_proto;
1238                 }
1239                 break;
1240
1241         case ETHER_FLOW:
1242                 if (!is_zero_ether_addr(mac_mask->h_dest)) {
1243                         if (ether_addr_equal(mac_mask->h_dest,
1244                                              mac_addr_ig_mask))
1245                                 spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC_IG;
1246                         else if (is_broadcast_ether_addr(mac_mask->h_dest))
1247                                 spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC;
1248                         else
1249                                 return -EINVAL;
1250                         ether_addr_copy(spec.loc_mac, mac_entry->h_dest);
1251                 }
1252                 if (!is_zero_ether_addr(mac_mask->h_source)) {
1253                         if (!is_broadcast_ether_addr(mac_mask->h_source))
1254                                 return -EINVAL;
1255                         spec.match_flags |= EFX_FILTER_MATCH_REM_MAC;
1256                         ether_addr_copy(spec.rem_mac, mac_entry->h_source);
1257                 }
1258                 if (mac_mask->h_proto) {
1259                         if (mac_mask->h_proto != ETHER_TYPE_FULL_MASK)
1260                                 return -EINVAL;
1261                         spec.match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
1262                         spec.ether_type = mac_entry->h_proto;
1263                 }
1264                 break;
1265
1266         default:
1267                 return -EINVAL;
1268         }
1269
1270         if ((rule->flow_type & FLOW_EXT) && rule->m_ext.vlan_tci) {
1271                 if (rule->m_ext.vlan_tci != htons(0xfff))
1272                         return -EINVAL;
1273                 spec.match_flags |= EFX_FILTER_MATCH_OUTER_VID;
1274                 spec.outer_vid = rule->h_ext.vlan_tci;
1275         }
1276
1277         rc = efx_filter_insert_filter(efx, &spec, true);
1278         if (rc < 0)
1279                 return rc;
1280
1281         rule->location = rc;
1282         return 0;
1283 }
1284
1285 static int efx_ethtool_set_rxnfc(struct net_device *net_dev,
1286                                  struct ethtool_rxnfc *info)
1287 {
1288         struct efx_nic *efx = netdev_priv(net_dev);
1289
1290         if (efx_filter_get_rx_id_limit(efx) == 0)
1291                 return -EOPNOTSUPP;
1292
1293         switch (info->cmd) {
1294         case ETHTOOL_SRXCLSRLINS:
1295                 return efx_ethtool_set_class_rule(efx, &info->fs,
1296                                                   info->rss_context);
1297
1298         case ETHTOOL_SRXCLSRLDEL:
1299                 return efx_filter_remove_id_safe(efx, EFX_FILTER_PRI_MANUAL,
1300                                                  info->fs.location);
1301
1302         default:
1303                 return -EOPNOTSUPP;
1304         }
1305 }
1306
1307 static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev)
1308 {
1309         struct efx_nic *efx = netdev_priv(net_dev);
1310
1311         if (efx->n_rx_channels == 1)
1312                 return 0;
1313         return ARRAY_SIZE(efx->rss_context.rx_indir_table);
1314 }
1315
1316 static u32 efx_ethtool_get_rxfh_key_size(struct net_device *net_dev)
1317 {
1318         struct efx_nic *efx = netdev_priv(net_dev);
1319
1320         return efx->type->rx_hash_key_size;
1321 }
1322
1323 static int efx_ethtool_get_rxfh(struct net_device *net_dev, u32 *indir, u8 *key,
1324                                 u8 *hfunc)
1325 {
1326         struct efx_nic *efx = netdev_priv(net_dev);
1327         int rc;
1328
1329         rc = efx->type->rx_pull_rss_config(efx);
1330         if (rc)
1331                 return rc;
1332
1333         if (hfunc)
1334                 *hfunc = ETH_RSS_HASH_TOP;
1335         if (indir)
1336                 memcpy(indir, efx->rss_context.rx_indir_table,
1337                        sizeof(efx->rss_context.rx_indir_table));
1338         if (key)
1339                 memcpy(key, efx->rss_context.rx_hash_key,
1340                        efx->type->rx_hash_key_size);
1341         return 0;
1342 }
1343
1344 static int efx_ethtool_set_rxfh(struct net_device *net_dev, const u32 *indir,
1345                                 const u8 *key, const u8 hfunc)
1346 {
1347         struct efx_nic *efx = netdev_priv(net_dev);
1348
1349         /* Hash function is Toeplitz, cannot be changed */
1350         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1351                 return -EOPNOTSUPP;
1352         if (!indir && !key)
1353                 return 0;
1354
1355         if (!key)
1356                 key = efx->rss_context.rx_hash_key;
1357         if (!indir)
1358                 indir = efx->rss_context.rx_indir_table;
1359
1360         return efx->type->rx_push_rss_config(efx, true, indir, key);
1361 }
1362
1363 static int efx_ethtool_get_rxfh_context(struct net_device *net_dev, u32 *indir,
1364                                         u8 *key, u8 *hfunc, u32 rss_context)
1365 {
1366         struct efx_nic *efx = netdev_priv(net_dev);
1367         struct efx_rss_context *ctx;
1368         int rc = 0;
1369
1370         if (!efx->type->rx_pull_rss_context_config)
1371                 return -EOPNOTSUPP;
1372
1373         mutex_lock(&efx->rss_lock);
1374         ctx = efx_find_rss_context_entry(efx, rss_context);
1375         if (!ctx) {
1376                 rc = -ENOENT;
1377                 goto out_unlock;
1378         }
1379         rc = efx->type->rx_pull_rss_context_config(efx, ctx);
1380         if (rc)
1381                 goto out_unlock;
1382
1383         if (hfunc)
1384                 *hfunc = ETH_RSS_HASH_TOP;
1385         if (indir)
1386                 memcpy(indir, ctx->rx_indir_table, sizeof(ctx->rx_indir_table));
1387         if (key)
1388                 memcpy(key, ctx->rx_hash_key, efx->type->rx_hash_key_size);
1389 out_unlock:
1390         mutex_unlock(&efx->rss_lock);
1391         return rc;
1392 }
1393
1394 static int efx_ethtool_set_rxfh_context(struct net_device *net_dev,
1395                                         const u32 *indir, const u8 *key,
1396                                         const u8 hfunc, u32 *rss_context,
1397                                         bool delete)
1398 {
1399         struct efx_nic *efx = netdev_priv(net_dev);
1400         struct efx_rss_context *ctx;
1401         bool allocated = false;
1402         int rc;
1403
1404         if (!efx->type->rx_push_rss_context_config)
1405                 return -EOPNOTSUPP;
1406         /* Hash function is Toeplitz, cannot be changed */
1407         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1408                 return -EOPNOTSUPP;
1409
1410         mutex_lock(&efx->rss_lock);
1411
1412         if (*rss_context == ETH_RXFH_CONTEXT_ALLOC) {
1413                 if (delete) {
1414                         /* alloc + delete == Nothing to do */
1415                         rc = -EINVAL;
1416                         goto out_unlock;
1417                 }
1418                 ctx = efx_alloc_rss_context_entry(efx);
1419                 if (!ctx) {
1420                         rc = -ENOMEM;
1421                         goto out_unlock;
1422                 }
1423                 ctx->context_id = EFX_EF10_RSS_CONTEXT_INVALID;
1424                 /* Initialise indir table and key to defaults */
1425                 efx_set_default_rx_indir_table(efx, ctx);
1426                 netdev_rss_key_fill(ctx->rx_hash_key, sizeof(ctx->rx_hash_key));
1427                 allocated = true;
1428         } else {
1429                 ctx = efx_find_rss_context_entry(efx, *rss_context);
1430                 if (!ctx) {
1431                         rc = -ENOENT;
1432                         goto out_unlock;
1433                 }
1434         }
1435
1436         if (delete) {
1437                 /* delete this context */
1438                 rc = efx->type->rx_push_rss_context_config(efx, ctx, NULL, NULL);
1439                 if (!rc)
1440                         efx_free_rss_context_entry(ctx);
1441                 goto out_unlock;
1442         }
1443
1444         if (!key)
1445                 key = ctx->rx_hash_key;
1446         if (!indir)
1447                 indir = ctx->rx_indir_table;
1448
1449         rc = efx->type->rx_push_rss_context_config(efx, ctx, indir, key);
1450         if (rc && allocated)
1451                 efx_free_rss_context_entry(ctx);
1452         else
1453                 *rss_context = ctx->user_id;
1454 out_unlock:
1455         mutex_unlock(&efx->rss_lock);
1456         return rc;
1457 }
1458
1459 static int efx_ethtool_get_ts_info(struct net_device *net_dev,
1460                                    struct ethtool_ts_info *ts_info)
1461 {
1462         struct efx_nic *efx = netdev_priv(net_dev);
1463
1464         /* Software capabilities */
1465         ts_info->so_timestamping = (SOF_TIMESTAMPING_RX_SOFTWARE |
1466                                     SOF_TIMESTAMPING_SOFTWARE);
1467         ts_info->phc_index = -1;
1468
1469         efx_ptp_get_ts_info(efx, ts_info);
1470         return 0;
1471 }
1472
1473 static int efx_ethtool_get_module_eeprom(struct net_device *net_dev,
1474                                          struct ethtool_eeprom *ee,
1475                                          u8 *data)
1476 {
1477         struct efx_nic *efx = netdev_priv(net_dev);
1478         int ret;
1479
1480         if (!efx->phy_op || !efx->phy_op->get_module_eeprom)
1481                 return -EOPNOTSUPP;
1482
1483         mutex_lock(&efx->mac_lock);
1484         ret = efx->phy_op->get_module_eeprom(efx, ee, data);
1485         mutex_unlock(&efx->mac_lock);
1486
1487         return ret;
1488 }
1489
1490 static int efx_ethtool_get_module_info(struct net_device *net_dev,
1491                                        struct ethtool_modinfo *modinfo)
1492 {
1493         struct efx_nic *efx = netdev_priv(net_dev);
1494         int ret;
1495
1496         if (!efx->phy_op || !efx->phy_op->get_module_info)
1497                 return -EOPNOTSUPP;
1498
1499         mutex_lock(&efx->mac_lock);
1500         ret = efx->phy_op->get_module_info(efx, modinfo);
1501         mutex_unlock(&efx->mac_lock);
1502
1503         return ret;
1504 }
1505
1506 static int efx_ethtool_get_fecparam(struct net_device *net_dev,
1507                                     struct ethtool_fecparam *fecparam)
1508 {
1509         struct efx_nic *efx = netdev_priv(net_dev);
1510         int rc;
1511
1512         if (!efx->phy_op || !efx->phy_op->get_fecparam)
1513                 return -EOPNOTSUPP;
1514         mutex_lock(&efx->mac_lock);
1515         rc = efx->phy_op->get_fecparam(efx, fecparam);
1516         mutex_unlock(&efx->mac_lock);
1517
1518         return rc;
1519 }
1520
1521 static int efx_ethtool_set_fecparam(struct net_device *net_dev,
1522                                     struct ethtool_fecparam *fecparam)
1523 {
1524         struct efx_nic *efx = netdev_priv(net_dev);
1525         int rc;
1526
1527         if (!efx->phy_op || !efx->phy_op->get_fecparam)
1528                 return -EOPNOTSUPP;
1529         mutex_lock(&efx->mac_lock);
1530         rc = efx->phy_op->set_fecparam(efx, fecparam);
1531         mutex_unlock(&efx->mac_lock);
1532
1533         return rc;
1534 }
1535
1536 const struct ethtool_ops efx_ethtool_ops = {
1537         .get_drvinfo            = efx_ethtool_get_drvinfo,
1538         .get_regs_len           = efx_ethtool_get_regs_len,
1539         .get_regs               = efx_ethtool_get_regs,
1540         .get_msglevel           = efx_ethtool_get_msglevel,
1541         .set_msglevel           = efx_ethtool_set_msglevel,
1542         .nway_reset             = efx_ethtool_nway_reset,
1543         .get_link               = ethtool_op_get_link,
1544         .get_coalesce           = efx_ethtool_get_coalesce,
1545         .set_coalesce           = efx_ethtool_set_coalesce,
1546         .get_ringparam          = efx_ethtool_get_ringparam,
1547         .set_ringparam          = efx_ethtool_set_ringparam,
1548         .get_pauseparam         = efx_ethtool_get_pauseparam,
1549         .set_pauseparam         = efx_ethtool_set_pauseparam,
1550         .get_sset_count         = efx_ethtool_get_sset_count,
1551         .self_test              = efx_ethtool_self_test,
1552         .get_strings            = efx_ethtool_get_strings,
1553         .set_phys_id            = efx_ethtool_phys_id,
1554         .get_ethtool_stats      = efx_ethtool_get_stats,
1555         .get_wol                = efx_ethtool_get_wol,
1556         .set_wol                = efx_ethtool_set_wol,
1557         .reset                  = efx_ethtool_reset,
1558         .get_rxnfc              = efx_ethtool_get_rxnfc,
1559         .set_rxnfc              = efx_ethtool_set_rxnfc,
1560         .get_rxfh_indir_size    = efx_ethtool_get_rxfh_indir_size,
1561         .get_rxfh_key_size      = efx_ethtool_get_rxfh_key_size,
1562         .get_rxfh               = efx_ethtool_get_rxfh,
1563         .set_rxfh               = efx_ethtool_set_rxfh,
1564         .get_rxfh_context       = efx_ethtool_get_rxfh_context,
1565         .set_rxfh_context       = efx_ethtool_set_rxfh_context,
1566         .get_ts_info            = efx_ethtool_get_ts_info,
1567         .get_module_info        = efx_ethtool_get_module_info,
1568         .get_module_eeprom      = efx_ethtool_get_module_eeprom,
1569         .get_link_ksettings     = efx_ethtool_get_link_ksettings,
1570         .set_link_ksettings     = efx_ethtool_set_link_ksettings,
1571         .get_fecparam           = efx_ethtool_get_fecparam,
1572         .set_fecparam           = efx_ethtool_set_fecparam,
1573 };