drivers/net/ethernet/mellanox/mlx4/en_ethtool.c

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/kernel.h>
  35 #include <linux/ethtool.h>
  36 #include <linux/netdevice.h>
  37
  38 #include "mlx4_en.h"
  39 #include "en_port.h"
  40
  41
  42 static void
  43 mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
  44 {
  45         struct mlx4_en_priv *priv = netdev_priv(dev);
  46         struct mlx4_en_dev *mdev = priv->mdev;
  47
  48         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
  49         strlcpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")",
  50                 sizeof(drvinfo->version));
  51         snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
  52                 "%d.%d.%d",
  53                 (u16) (mdev->dev->caps.fw_ver >> 32),
  54                 (u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
  55                 (u16) (mdev->dev->caps.fw_ver & 0xffff));
  56         strlcpy(drvinfo->bus_info, pci_name(mdev->dev->pdev),
  57                 sizeof(drvinfo->bus_info));
  58         drvinfo->n_stats = 0;
  59         drvinfo->regdump_len = 0;
  60         drvinfo->eedump_len = 0;
  61 }
  62
  63 static const char main_strings[][ETH_GSTRING_LEN] = {
  64         "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
  65         "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
  66         "rx_length_errors", "rx_over_errors", "rx_crc_errors",
  67         "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
  68         "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
  69         "tx_heartbeat_errors", "tx_window_errors",
  70
  71         /* port statistics */
  72         "tso_packets",
  73         "queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
  74         "rx_csum_good", "rx_csum_none", "tx_chksum_offload",
  75
  76         /* packet statistics */
  77         "broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
  78         "rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
  79         "tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
  80         "tx_prio_6", "tx_prio_7",
  81 };
  82 #define NUM_MAIN_STATS  21
  83 #define NUM_ALL_STATS   (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
  84
  85 static const char mlx4_en_test_names[][ETH_GSTRING_LEN]= {
  86         "Interupt Test",
  87         "Link Test",
  88         "Speed Test",
  89         "Register Test",
  90         "Loopback Test",
  91 };
  92
  93 static u32 mlx4_en_get_msglevel(struct net_device *dev)
  94 {
  95         return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
  96 }
  97
  98 static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
  99 {
 100         ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
 101 }
 102
 103 static void mlx4_en_get_wol(struct net_device *netdev,
 104                             struct ethtool_wolinfo *wol)
 105 {
 106         struct mlx4_en_priv *priv = netdev_priv(netdev);
 107         int err = 0;
 108         u64 config = 0;
 109         u64 mask;
 110
 111         if ((priv->port < 1) || (priv->port > 2)) {
 112                 en_err(priv, "Failed to get WoL information\n");
 113                 return;
 114         }
 115
 116         mask = (priv->port == 1) ? MLX4_DEV_CAP_FLAG_WOL_PORT1 :
 117                 MLX4_DEV_CAP_FLAG_WOL_PORT2;
 118
 119         if (!(priv->mdev->dev->caps.flags & mask)) {
 120                 wol->supported = 0;
 121                 wol->wolopts = 0;
 122                 return;
 123         }
 124
 125         err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
 126         if (err) {
 127                 en_err(priv, "Failed to get WoL information\n");
 128                 return;
 129         }
 130
 131         if (config & MLX4_EN_WOL_MAGIC)
 132                 wol->supported = WAKE_MAGIC;
 133         else
 134                 wol->supported = 0;
 135
 136         if (config & MLX4_EN_WOL_ENABLED)
 137                 wol->wolopts = WAKE_MAGIC;
 138         else
 139                 wol->wolopts = 0;
 140 }
 141
 142 static int mlx4_en_set_wol(struct net_device *netdev,
 143                             struct ethtool_wolinfo *wol)
 144 {
 145         struct mlx4_en_priv *priv = netdev_priv(netdev);
 146         u64 config = 0;
 147         int err = 0;
 148         u64 mask;
 149
 150         if ((priv->port < 1) || (priv->port > 2))
 151                 return -EOPNOTSUPP;
 152
 153         mask = (priv->port == 1) ? MLX4_DEV_CAP_FLAG_WOL_PORT1 :
 154                 MLX4_DEV_CAP_FLAG_WOL_PORT2;
 155
 156         if (!(priv->mdev->dev->caps.flags & mask))
 157                 return -EOPNOTSUPP;
 158
 159         if (wol->supported & ~WAKE_MAGIC)
 160                 return -EINVAL;
 161
 162         err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
 163         if (err) {
 164                 en_err(priv, "Failed to get WoL info, unable to modify\n");
 165                 return err;
 166         }
 167
 168         if (wol->wolopts & WAKE_MAGIC) {
 169                 config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
 170                                 MLX4_EN_WOL_MAGIC;
 171         } else {
 172                 config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
 173                 config |= MLX4_EN_WOL_DO_MODIFY;
 174         }
 175
 176         err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
 177         if (err)
 178                 en_err(priv, "Failed to set WoL information\n");
 179
 180         return err;
 181 }
 182
 183 static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
 184 {
 185         struct mlx4_en_priv *priv = netdev_priv(dev);
 186         int bit_count = hweight64(priv->stats_bitmap);
 187
 188         switch (sset) {
 189         case ETH_SS_STATS:
 190                 return (priv->stats_bitmap ? bit_count : NUM_ALL_STATS) +
 191                         (priv->tx_ring_num + priv->rx_ring_num) * 2;
 192         case ETH_SS_TEST:
 193                 return MLX4_EN_NUM_SELF_TEST - !(priv->mdev->dev->caps.flags
 194                                         & MLX4_DEV_CAP_FLAG_UC_LOOPBACK) * 2;
 195         default:
 196                 return -EOPNOTSUPP;
 197         }
 198 }
 199
 200 static void mlx4_en_get_ethtool_stats(struct net_device *dev,
 201                 struct ethtool_stats *stats, uint64_t *data)
 202 {
 203         struct mlx4_en_priv *priv = netdev_priv(dev);
 204         int index = 0;
 205         int i, j = 0;
 206
 207         spin_lock_bh(&priv->stats_lock);
 208
 209         if (!(priv->stats_bitmap)) {
 210                 for (i = 0; i < NUM_MAIN_STATS; i++)
 211                         data[index++] =
 212                                 ((unsigned long *) &priv->stats)[i];
 213                 for (i = 0; i < NUM_PORT_STATS; i++)
 214                         data[index++] =
 215                                 ((unsigned long *) &priv->port_stats)[i];
 216                 for (i = 0; i < NUM_PKT_STATS; i++)
 217                         data[index++] =
 218                                 ((unsigned long *) &priv->pkstats)[i];
 219         } else {
 220                 for (i = 0; i < NUM_MAIN_STATS; i++) {
 221                         if ((priv->stats_bitmap >> j) & 1)
 222                                 data[index++] =
 223                                 ((unsigned long *) &priv->stats)[i];
 224                         j++;
 225                 }
 226                 for (i = 0; i < NUM_PORT_STATS; i++) {
 227                         if ((priv->stats_bitmap >> j) & 1)
 228                                 data[index++] =
 229                                 ((unsigned long *) &priv->port_stats)[i];
 230                         j++;
 231                 }
 232         }
 233         for (i = 0; i < priv->tx_ring_num; i++) {
 234                 data[index++] = priv->tx_ring[i].packets;
 235                 data[index++] = priv->tx_ring[i].bytes;
 236         }
 237         for (i = 0; i < priv->rx_ring_num; i++) {
 238                 data[index++] = priv->rx_ring[i].packets;
 239                 data[index++] = priv->rx_ring[i].bytes;
 240         }
 241         spin_unlock_bh(&priv->stats_lock);
 242
 243 }
 244
 245 static void mlx4_en_self_test(struct net_device *dev,
 246                               struct ethtool_test *etest, u64 *buf)
 247 {
 248         mlx4_en_ex_selftest(dev, &etest->flags, buf);
 249 }
 250
 251 static void mlx4_en_get_strings(struct net_device *dev,
 252                                 uint32_t stringset, uint8_t *data)
 253 {
 254         struct mlx4_en_priv *priv = netdev_priv(dev);
 255         int index = 0;
 256         int i;
 257
 258         switch (stringset) {
 259         case ETH_SS_TEST:
 260                 for (i = 0; i < MLX4_EN_NUM_SELF_TEST - 2; i++)
 261                         strcpy(data + i * ETH_GSTRING_LEN, mlx4_en_test_names[i]);
 262                 if (priv->mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UC_LOOPBACK)
 263                         for (; i < MLX4_EN_NUM_SELF_TEST; i++)
 264                                 strcpy(data + i * ETH_GSTRING_LEN, mlx4_en_test_names[i]);
 265                 break;
 266
 267         case ETH_SS_STATS:
 268                 /* Add main counters */
 269                 if (!priv->stats_bitmap) {
 270                         for (i = 0; i < NUM_MAIN_STATS; i++)
 271                                 strcpy(data + (index++) * ETH_GSTRING_LEN,
 272                                         main_strings[i]);
 273                         for (i = 0; i < NUM_PORT_STATS; i++)
 274                                 strcpy(data + (index++) * ETH_GSTRING_LEN,
 275                                         main_strings[i +
 276                                         NUM_MAIN_STATS]);
 277                         for (i = 0; i < NUM_PKT_STATS; i++)
 278                                 strcpy(data + (index++) * ETH_GSTRING_LEN,
 279                                         main_strings[i +
 280                                         NUM_MAIN_STATS +
 281                                         NUM_PORT_STATS]);
 282                 } else
 283                         for (i = 0; i < NUM_MAIN_STATS + NUM_PORT_STATS; i++) {
 284                                 if ((priv->stats_bitmap >> i) & 1) {
 285                                         strcpy(data +
 286                                                (index++) * ETH_GSTRING_LEN,
 287                                                main_strings[i]);
 288                                 }
 289                                 if (!(priv->stats_bitmap >> i))
 290                                         break;
 291                         }
 292                 for (i = 0; i < priv->tx_ring_num; i++) {
 293                         sprintf(data + (index++) * ETH_GSTRING_LEN,
 294                                 "tx%d_packets", i);
 295                         sprintf(data + (index++) * ETH_GSTRING_LEN,
 296                                 "tx%d_bytes", i);
 297                 }
 298                 for (i = 0; i < priv->rx_ring_num; i++) {
 299                         sprintf(data + (index++) * ETH_GSTRING_LEN,
 300                                 "rx%d_packets", i);
 301                         sprintf(data + (index++) * ETH_GSTRING_LEN,
 302                                 "rx%d_bytes", i);
 303                 }
 304                 break;
 305         }
 306 }
 307
 308 static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 309 {
 310         struct mlx4_en_priv *priv = netdev_priv(dev);
 311         int trans_type;
 312
 313         cmd->autoneg = AUTONEG_DISABLE;
 314         cmd->supported = SUPPORTED_10000baseT_Full;
 315         cmd->advertising = ADVERTISED_10000baseT_Full;
 316
 317         if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
 318                 return -ENOMEM;
 319
 320         trans_type = priv->port_state.transciver;
 321         if (netif_carrier_ok(dev)) {
 322                 ethtool_cmd_speed_set(cmd, priv->port_state.link_speed);
 323                 cmd->duplex = DUPLEX_FULL;
 324         } else {
 325                 ethtool_cmd_speed_set(cmd, -1);
 326                 cmd->duplex = -1;
 327         }
 328
 329         if (trans_type > 0 && trans_type <= 0xC) {
 330                 cmd->port = PORT_FIBRE;
 331                 cmd->transceiver = XCVR_EXTERNAL;
 332                 cmd->supported |= SUPPORTED_FIBRE;
 333                 cmd->advertising |= ADVERTISED_FIBRE;
 334         } else if (trans_type == 0x80 || trans_type == 0) {
 335                 cmd->port = PORT_TP;
 336                 cmd->transceiver = XCVR_INTERNAL;
 337                 cmd->supported |= SUPPORTED_TP;
 338                 cmd->advertising |= ADVERTISED_TP;
 339         } else  {
 340                 cmd->port = -1;
 341                 cmd->transceiver = -1;
 342         }
 343         return 0;
 344 }
 345
 346 static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 347 {
 348         if ((cmd->autoneg == AUTONEG_ENABLE) ||
 349             (ethtool_cmd_speed(cmd) != SPEED_10000) ||
 350             (cmd->duplex != DUPLEX_FULL))
 351                 return -EINVAL;
 352
 353         /* Nothing to change */
 354         return 0;
 355 }
 356
 357 static int mlx4_en_get_coalesce(struct net_device *dev,
 358                               struct ethtool_coalesce *coal)
 359 {
 360         struct mlx4_en_priv *priv = netdev_priv(dev);
 361
 362         coal->tx_coalesce_usecs = 0;
 363         coal->tx_max_coalesced_frames = 0;
 364         coal->rx_coalesce_usecs = priv->rx_usecs;
 365         coal->rx_max_coalesced_frames = priv->rx_frames;
 366
 367         coal->pkt_rate_low = priv->pkt_rate_low;
 368         coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
 369         coal->pkt_rate_high = priv->pkt_rate_high;
 370         coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
 371         coal->rate_sample_interval = priv->sample_interval;
 372         coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
 373         return 0;
 374 }
 375
 376 static int mlx4_en_set_coalesce(struct net_device *dev,
 377                               struct ethtool_coalesce *coal)
 378 {
 379         struct mlx4_en_priv *priv = netdev_priv(dev);
 380         int err, i;
 381
 382         priv->rx_frames = (coal->rx_max_coalesced_frames ==
 383                            MLX4_EN_AUTO_CONF) ?
 384                                 MLX4_EN_RX_COAL_TARGET :
 385                                 coal->rx_max_coalesced_frames;
 386         priv->rx_usecs = (coal->rx_coalesce_usecs ==
 387                           MLX4_EN_AUTO_CONF) ?
 388                                 MLX4_EN_RX_COAL_TIME :
 389                                 coal->rx_coalesce_usecs;
 390
 391         /* Set adaptive coalescing params */
 392         priv->pkt_rate_low = coal->pkt_rate_low;
 393         priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
 394         priv->pkt_rate_high = coal->pkt_rate_high;
 395         priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
 396         priv->sample_interval = coal->rate_sample_interval;
 397         priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
 398         if (priv->adaptive_rx_coal)
 399                 return 0;
 400
 401         for (i = 0; i < priv->rx_ring_num; i++) {
 402                 priv->rx_cq[i].moder_cnt = priv->rx_frames;
 403                 priv->rx_cq[i].moder_time = priv->rx_usecs;
 404                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
 405                 err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
 406                 if (err)
 407                         return err;
 408         }
 409         return 0;
 410 }
 411
 412 static int mlx4_en_set_pauseparam(struct net_device *dev,
 413                                 struct ethtool_pauseparam *pause)
 414 {
 415         struct mlx4_en_priv *priv = netdev_priv(dev);
 416         struct mlx4_en_dev *mdev = priv->mdev;
 417         int err;
 418
 419         priv->prof->tx_pause = pause->tx_pause != 0;
 420         priv->prof->rx_pause = pause->rx_pause != 0;
 421         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
 422                                     priv->rx_skb_size + ETH_FCS_LEN,
 423                                     priv->prof->tx_pause,
 424                                     priv->prof->tx_ppp,
 425                                     priv->prof->rx_pause,
 426                                     priv->prof->rx_ppp);
 427         if (err)
 428                 en_err(priv, "Failed setting pause params\n");
 429
 430         return err;
 431 }
 432
 433 static void mlx4_en_get_pauseparam(struct net_device *dev,
 434                                  struct ethtool_pauseparam *pause)
 435 {
 436         struct mlx4_en_priv *priv = netdev_priv(dev);
 437
 438         pause->tx_pause = priv->prof->tx_pause;
 439         pause->rx_pause = priv->prof->rx_pause;
 440 }
 441
 442 static int mlx4_en_set_ringparam(struct net_device *dev,
 443                                  struct ethtool_ringparam *param)
 444 {
 445         struct mlx4_en_priv *priv = netdev_priv(dev);
 446         struct mlx4_en_dev *mdev = priv->mdev;
 447         u32 rx_size, tx_size;
 448         int port_up = 0;
 449         int err = 0;
 450         int i;
 451
 452         if (param->rx_jumbo_pending || param->rx_mini_pending)
 453                 return -EINVAL;
 454
 455         rx_size = roundup_pow_of_two(param->rx_pending);
 456         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
 457         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
 458         tx_size = roundup_pow_of_two(param->tx_pending);
 459         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
 460         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
 461
 462         if (rx_size == (priv->port_up ? priv->rx_ring[0].actual_size :
 463                                         priv->rx_ring[0].size) &&
 464             tx_size == priv->tx_ring[0].size)
 465                 return 0;
 466
 467         mutex_lock(&mdev->state_lock);
 468         if (priv->port_up) {
 469                 port_up = 1;
 470                 mlx4_en_stop_port(dev);
 471         }
 472
 473         mlx4_en_free_resources(priv);
 474
 475         priv->prof->tx_ring_size = tx_size;
 476         priv->prof->rx_ring_size = rx_size;
 477
 478         err = mlx4_en_alloc_resources(priv);
 479         if (err) {
 480                 en_err(priv, "Failed reallocating port resources\n");
 481                 goto out;
 482         }
 483         if (port_up) {
 484                 err = mlx4_en_start_port(dev);
 485                 if (err)
 486                         en_err(priv, "Failed starting port\n");
 487         }
 488
 489         for (i = 0; i < priv->rx_ring_num; i++) {
 490                 priv->rx_cq[i].moder_cnt = priv->rx_frames;
 491                 priv->rx_cq[i].moder_time = priv->rx_usecs;
 492                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
 493                 err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
 494                 if (err)
 495                         goto out;
 496         }
 497
 498 out:
 499         mutex_unlock(&mdev->state_lock);
 500         return err;
 501 }
 502
 503 static void mlx4_en_get_ringparam(struct net_device *dev,
 504                                   struct ethtool_ringparam *param)
 505 {
 506         struct mlx4_en_priv *priv = netdev_priv(dev);
 507
 508         memset(param, 0, sizeof(*param));
 509         param->rx_max_pending = MLX4_EN_MAX_RX_SIZE;
 510         param->tx_max_pending = MLX4_EN_MAX_TX_SIZE;
 511         param->rx_pending = priv->port_up ?
 512                 priv->rx_ring[0].actual_size : priv->rx_ring[0].size;
 513         param->tx_pending = priv->tx_ring[0].size;
 514 }
 515
 516 static u32 mlx4_en_get_rxfh_indir_size(struct net_device *dev)
 517 {
 518         struct mlx4_en_priv *priv = netdev_priv(dev);
 519
 520         return priv->rx_ring_num;
 521 }
 522
 523 static int mlx4_en_get_rxfh_indir(struct net_device *dev, u32 *ring_index)
 524 {
 525         struct mlx4_en_priv *priv = netdev_priv(dev);
 526         struct mlx4_en_rss_map *rss_map = &priv->rss_map;
 527         int rss_rings;
 528         size_t n = priv->rx_ring_num;
 529         int err = 0;
 530
 531         rss_rings = priv->prof->rss_rings ?: priv->rx_ring_num;
 532
 533         while (n--) {
 534                 ring_index[n] = rss_map->qps[n % rss_rings].qpn -
 535                         rss_map->base_qpn;
 536         }
 537
 538         return err;
 539 }
 540
 541 static int mlx4_en_set_rxfh_indir(struct net_device *dev,
 542                 const u32 *ring_index)
 543 {
 544         struct mlx4_en_priv *priv = netdev_priv(dev);
 545         struct mlx4_en_dev *mdev = priv->mdev;
 546         int port_up = 0;
 547         int err = 0;
 548         int i;
 549         int rss_rings = 0;
 550
 551         /* Calculate RSS table size and make sure flows are spread evenly
 552          * between rings
 553          */
 554         for (i = 0; i < priv->rx_ring_num; i++) {
 555                 if (i > 0 && !ring_index[i] && !rss_rings)
 556                         rss_rings = i;
 557
 558                 if (ring_index[i] != (i % (rss_rings ?: priv->rx_ring_num)))
 559                         return -EINVAL;
 560         }
 561
 562         if (!rss_rings)
 563                 rss_rings = priv->rx_ring_num;
 564
 565         /* RSS table size must be an order of 2 */
 566         if (!is_power_of_2(rss_rings))
 567                 return -EINVAL;
 568
 569         mutex_lock(&mdev->state_lock);
 570         if (priv->port_up) {
 571                 port_up = 1;
 572                 mlx4_en_stop_port(dev);
 573         }
 574
 575         priv->prof->rss_rings = rss_rings;
 576
 577         if (port_up) {
 578                 err = mlx4_en_start_port(dev);
 579                 if (err)
 580                         en_err(priv, "Failed starting port\n");
 581         }
 582
 583         mutex_unlock(&mdev->state_lock);
 584         return err;
 585 }
 586
 587 static int mlx4_en_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 588                              u32 *rule_locs)
 589 {
 590         struct mlx4_en_priv *priv = netdev_priv(dev);
 591         int err = 0;
 592
 593         switch (cmd->cmd) {
 594         case ETHTOOL_GRXRINGS:
 595                 cmd->data = priv->rx_ring_num;
 596                 break;
 597         default:
 598                 err = -EOPNOTSUPP;
 599                 break;
 600         }
 601
 602         return err;
 603 }
 604
 605 const struct ethtool_ops mlx4_en_ethtool_ops = {
 606         .get_drvinfo = mlx4_en_get_drvinfo,
 607         .get_settings = mlx4_en_get_settings,
 608         .set_settings = mlx4_en_set_settings,
 609         .get_link = ethtool_op_get_link,
 610         .get_strings = mlx4_en_get_strings,
 611         .get_sset_count = mlx4_en_get_sset_count,
 612         .get_ethtool_stats = mlx4_en_get_ethtool_stats,
 613         .self_test = mlx4_en_self_test,
 614         .get_wol = mlx4_en_get_wol,
 615         .set_wol = mlx4_en_set_wol,
 616         .get_msglevel = mlx4_en_get_msglevel,
 617         .set_msglevel = mlx4_en_set_msglevel,
 618         .get_coalesce = mlx4_en_get_coalesce,
 619         .set_coalesce = mlx4_en_set_coalesce,
 620         .get_pauseparam = mlx4_en_get_pauseparam,
 621         .set_pauseparam = mlx4_en_set_pauseparam,
 622         .get_ringparam = mlx4_en_get_ringparam,
 623         .set_ringparam = mlx4_en_set_ringparam,
 624         .get_rxnfc = mlx4_en_get_rxnfc,
 625         .get_rxfh_indir_size = mlx4_en_get_rxfh_indir_size,
 626         .get_rxfh_indir = mlx4_en_get_rxfh_indir,
 627         .set_rxfh_indir = mlx4_en_set_rxfh_indir,
 628 };
 629
 630
 631
 632
 633