release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/net/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 mlx4_en_update_lro_stats(struct mlx4_en_priv *priv)
  43 {
  44         int i;
  45
  46         priv->port_stats.lro_aggregated = 0;
  47         priv->port_stats.lro_flushed = 0;
  48         priv->port_stats.lro_no_desc = 0;
  49
  50         for (i = 0; i < priv->rx_ring_num; i++) {
  51                 priv->port_stats.lro_aggregated += priv->rx_ring[i].lro.stats.aggregated;
  52                 priv->port_stats.lro_flushed += priv->rx_ring[i].lro.stats.flushed;
  53                 priv->port_stats.lro_no_desc += priv->rx_ring[i].lro.stats.no_desc;
  54         }
  55 }
  56
  57 static void
  58 mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
  59 {
  60         struct mlx4_en_priv *priv = netdev_priv(dev);
  61         struct mlx4_en_dev *mdev = priv->mdev;
  62
  63         sprintf(drvinfo->driver, DRV_NAME " (%s)", mdev->dev->board_id);
  64         strncpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")", 32);
  65         sprintf(drvinfo->fw_version, "%d.%d.%d",
  66                 (u16) (mdev->dev->caps.fw_ver >> 32),
  67                 (u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
  68                 (u16) (mdev->dev->caps.fw_ver & 0xffff));
  69         strncpy(drvinfo->bus_info, pci_name(mdev->dev->pdev), 32);
  70         drvinfo->n_stats = 0;
  71         drvinfo->regdump_len = 0;
  72         drvinfo->eedump_len = 0;
  73 }
  74
  75 static u32 mlx4_en_get_tso(struct net_device *dev)
  76 {
  77         return (dev->features & NETIF_F_TSO) != 0;
  78 }
  79
  80 static int mlx4_en_set_tso(struct net_device *dev, u32 data)
  81 {
  82         struct mlx4_en_priv *priv = netdev_priv(dev);
  83
  84         if (data) {
  85                 if (!priv->mdev->LSO_support)
  86                         return -EPERM;
  87                 dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
  88         } else
  89                 dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
  90         return 0;
  91 }
  92
  93 static u32 mlx4_en_get_rx_csum(struct net_device *dev)
  94 {
  95         struct mlx4_en_priv *priv = netdev_priv(dev);
  96         return priv->rx_csum;
  97 }
  98
  99 static int mlx4_en_set_rx_csum(struct net_device *dev, u32 data)
 100 {
 101         struct mlx4_en_priv *priv = netdev_priv(dev);
 102         priv->rx_csum = (data != 0);
 103         return 0;
 104 }
 105
 106 static const char main_strings[][ETH_GSTRING_LEN] = {
 107         "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
 108         "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
 109         "rx_length_errors", "rx_over_errors", "rx_crc_errors",
 110         "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
 111         "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
 112         "tx_heartbeat_errors", "tx_window_errors",
 113
 114         /* port statistics */
 115         "lro_aggregated", "lro_flushed", "lro_no_desc", "tso_packets",
 116         "queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
 117         "rx_csum_good", "rx_csum_none", "tx_chksum_offload",
 118
 119         /* packet statistics */
 120         "broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
 121         "rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
 122         "tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
 123         "tx_prio_6", "tx_prio_7",
 124 };
 125 #define NUM_MAIN_STATS  21
 126 #define NUM_ALL_STATS   (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
 127
 128 static u32 mlx4_en_get_msglevel(struct net_device *dev)
 129 {
 130         return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
 131 }
 132
 133 static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
 134 {
 135         ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
 136 }
 137
 138 static void mlx4_en_get_wol(struct net_device *netdev,
 139                             struct ethtool_wolinfo *wol)
 140 {
 141         wol->supported = 0;
 142         wol->wolopts = 0;
 143 }
 144
 145 static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
 146 {
 147         struct mlx4_en_priv *priv = netdev_priv(dev);
 148
 149         if (sset != ETH_SS_STATS)
 150                 return -EOPNOTSUPP;
 151
 152         return NUM_ALL_STATS + (priv->tx_ring_num + priv->rx_ring_num) * 2;
 153 }
 154
 155 static void mlx4_en_get_ethtool_stats(struct net_device *dev,
 156                 struct ethtool_stats *stats, uint64_t *data)
 157 {
 158         struct mlx4_en_priv *priv = netdev_priv(dev);
 159         int index = 0;
 160         int i;
 161
 162         spin_lock_bh(&priv->stats_lock);
 163
 164         mlx4_en_update_lro_stats(priv);
 165
 166         for (i = 0; i < NUM_MAIN_STATS; i++)
 167                 data[index++] = ((unsigned long *) &priv->stats)[i];
 168         for (i = 0; i < NUM_PORT_STATS; i++)
 169                 data[index++] = ((unsigned long *) &priv->port_stats)[i];
 170         for (i = 0; i < priv->tx_ring_num; i++) {
 171                 data[index++] = priv->tx_ring[i].packets;
 172                 data[index++] = priv->tx_ring[i].bytes;
 173         }
 174         for (i = 0; i < priv->rx_ring_num; i++) {
 175                 data[index++] = priv->rx_ring[i].packets;
 176                 data[index++] = priv->rx_ring[i].bytes;
 177         }
 178         for (i = 0; i < NUM_PKT_STATS; i++)
 179                 data[index++] = ((unsigned long *) &priv->pkstats)[i];
 180         spin_unlock_bh(&priv->stats_lock);
 181
 182 }
 183
 184 static void mlx4_en_get_strings(struct net_device *dev,
 185                                 uint32_t stringset, uint8_t *data)
 186 {
 187         struct mlx4_en_priv *priv = netdev_priv(dev);
 188         int index = 0;
 189         int i;
 190
 191         if (stringset != ETH_SS_STATS)
 192                 return;
 193
 194         /* Add main counters */
 195         for (i = 0; i < NUM_MAIN_STATS; i++)
 196                 strcpy(data + (index++) * ETH_GSTRING_LEN, main_strings[i]);
 197         for (i = 0; i < NUM_PORT_STATS; i++)
 198                 strcpy(data + (index++) * ETH_GSTRING_LEN,
 199                         main_strings[i + NUM_MAIN_STATS]);
 200         for (i = 0; i < priv->tx_ring_num; i++) {
 201                 sprintf(data + (index++) * ETH_GSTRING_LEN,
 202                         "tx%d_packets", i);
 203                 sprintf(data + (index++) * ETH_GSTRING_LEN,
 204                         "tx%d_bytes", i);
 205         }
 206         for (i = 0; i < priv->rx_ring_num; i++) {
 207                 sprintf(data + (index++) * ETH_GSTRING_LEN,
 208                         "rx%d_packets", i);
 209                 sprintf(data + (index++) * ETH_GSTRING_LEN,
 210                         "rx%d_bytes", i);
 211         }
 212         for (i = 0; i < NUM_PKT_STATS; i++)
 213                 strcpy(data + (index++) * ETH_GSTRING_LEN,
 214                         main_strings[i + NUM_MAIN_STATS + NUM_PORT_STATS]);
 215 }
 216
 217 static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 218 {
 219         cmd->autoneg = AUTONEG_DISABLE;
 220         cmd->supported = SUPPORTED_10000baseT_Full;
 221         cmd->advertising = ADVERTISED_1000baseT_Full;
 222         if (netif_carrier_ok(dev)) {
 223                 cmd->speed = SPEED_10000;
 224                 cmd->duplex = DUPLEX_FULL;
 225         } else {
 226                 cmd->speed = -1;
 227                 cmd->duplex = -1;
 228         }
 229         return 0;
 230 }
 231
 232 static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 233 {
 234         if ((cmd->autoneg == AUTONEG_ENABLE) ||
 235             (cmd->speed != SPEED_10000) || (cmd->duplex != DUPLEX_FULL))
 236                 return -EINVAL;
 237
 238         /* Nothing to change */
 239         return 0;
 240 }
 241
 242 static int mlx4_en_get_coalesce(struct net_device *dev,
 243                               struct ethtool_coalesce *coal)
 244 {
 245         struct mlx4_en_priv *priv = netdev_priv(dev);
 246
 247         coal->tx_coalesce_usecs = 0;
 248         coal->tx_max_coalesced_frames = 0;
 249         coal->rx_coalesce_usecs = priv->rx_usecs;
 250         coal->rx_max_coalesced_frames = priv->rx_frames;
 251
 252         coal->pkt_rate_low = priv->pkt_rate_low;
 253         coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
 254         coal->pkt_rate_high = priv->pkt_rate_high;
 255         coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
 256         coal->rate_sample_interval = priv->sample_interval;
 257         coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
 258         return 0;
 259 }
 260
 261 static int mlx4_en_set_coalesce(struct net_device *dev,
 262                               struct ethtool_coalesce *coal)
 263 {
 264         struct mlx4_en_priv *priv = netdev_priv(dev);
 265         int err, i;
 266
 267         priv->rx_frames = (coal->rx_max_coalesced_frames ==
 268                            MLX4_EN_AUTO_CONF) ?
 269                                 MLX4_EN_RX_COAL_TARGET :
 270                                 coal->rx_max_coalesced_frames;
 271         priv->rx_usecs = (coal->rx_coalesce_usecs ==
 272                           MLX4_EN_AUTO_CONF) ?
 273                                 MLX4_EN_RX_COAL_TIME :
 274                                 coal->rx_coalesce_usecs;
 275
 276         /* Set adaptive coalescing params */
 277         priv->pkt_rate_low = coal->pkt_rate_low;
 278         priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
 279         priv->pkt_rate_high = coal->pkt_rate_high;
 280         priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
 281         priv->sample_interval = coal->rate_sample_interval;
 282         priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
 283         priv->last_moder_time = MLX4_EN_AUTO_CONF;
 284         if (priv->adaptive_rx_coal)
 285                 return 0;
 286
 287         for (i = 0; i < priv->rx_ring_num; i++) {
 288                 priv->rx_cq[i].moder_cnt = priv->rx_frames;
 289                 priv->rx_cq[i].moder_time = priv->rx_usecs;
 290                 err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
 291                 if (err)
 292                         return err;
 293         }
 294         return 0;
 295 }
 296
 297 static int mlx4_en_set_pauseparam(struct net_device *dev,
 298                                 struct ethtool_pauseparam *pause)
 299 {
 300         struct mlx4_en_priv *priv = netdev_priv(dev);
 301         struct mlx4_en_dev *mdev = priv->mdev;
 302         int err;
 303
 304         priv->prof->tx_pause = pause->tx_pause != 0;
 305         priv->prof->rx_pause = pause->rx_pause != 0;
 306         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
 307                                     priv->rx_skb_size + ETH_FCS_LEN,
 308                                     priv->prof->tx_pause,
 309                                     priv->prof->tx_ppp,
 310                                     priv->prof->rx_pause,
 311                                     priv->prof->rx_ppp);
 312         if (err)
 313                 en_err(priv, "Failed setting pause params\n");
 314
 315         return err;
 316 }
 317
 318 static void mlx4_en_get_pauseparam(struct net_device *dev,
 319                                  struct ethtool_pauseparam *pause)
 320 {
 321         struct mlx4_en_priv *priv = netdev_priv(dev);
 322
 323         pause->tx_pause = priv->prof->tx_pause;
 324         pause->rx_pause = priv->prof->rx_pause;
 325 }
 326
 327 static int mlx4_en_set_ringparam(struct net_device *dev,
 328                                  struct ethtool_ringparam *param)
 329 {
 330         struct mlx4_en_priv *priv = netdev_priv(dev);
 331         struct mlx4_en_dev *mdev = priv->mdev;
 332         u32 rx_size, tx_size;
 333         int port_up = 0;
 334         int err = 0;
 335
 336         if (param->rx_jumbo_pending || param->rx_mini_pending)
 337                 return -EINVAL;
 338
 339         rx_size = roundup_pow_of_two(param->rx_pending);
 340         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
 341         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
 342         tx_size = roundup_pow_of_two(param->tx_pending);
 343         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
 344         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
 345
 346         if (rx_size == priv->prof->rx_ring_size &&
 347             tx_size == priv->prof->tx_ring_size)
 348                 return 0;
 349
 350         mutex_lock(&mdev->state_lock);
 351         if (priv->port_up) {
 352                 port_up = 1;
 353                 mlx4_en_stop_port(dev);
 354         }
 355
 356         mlx4_en_free_resources(priv);
 357
 358         priv->prof->tx_ring_size = tx_size;
 359         priv->prof->rx_ring_size = rx_size;
 360
 361         err = mlx4_en_alloc_resources(priv);
 362         if (err) {
 363                 en_err(priv, "Failed reallocating port resources\n");
 364                 goto out;
 365         }
 366         if (port_up) {
 367                 err = mlx4_en_start_port(dev);
 368                 if (err)
 369                         en_err(priv, "Failed starting port\n");
 370         }
 371
 372 out:
 373         mutex_unlock(&mdev->state_lock);
 374         return err;
 375 }
 376
 377 static void mlx4_en_get_ringparam(struct net_device *dev,
 378                                   struct ethtool_ringparam *param)
 379 {
 380         struct mlx4_en_priv *priv = netdev_priv(dev);
 381         struct mlx4_en_dev *mdev = priv->mdev;
 382
 383         memset(param, 0, sizeof(*param));
 384         param->rx_max_pending = MLX4_EN_MAX_RX_SIZE;
 385         param->tx_max_pending = MLX4_EN_MAX_TX_SIZE;
 386         param->rx_pending = mdev->profile.prof[priv->port].rx_ring_size;
 387         param->tx_pending = mdev->profile.prof[priv->port].tx_ring_size;
 388 }
 389
 390 static int mlx4_ethtool_op_set_flags(struct net_device *dev, u32 data)
 391 {
 392         struct mlx4_en_priv *priv = netdev_priv(dev);
 393         struct mlx4_en_dev *mdev = priv->mdev;
 394         int rc = 0;
 395         int changed = 0;
 396
 397         if (data & ~ETH_FLAG_LRO)
 398                 return -EOPNOTSUPP;
 399
 400         if (data & ETH_FLAG_LRO) {
 401                 if (mdev->profile.num_lro == 0)
 402                         return -EOPNOTSUPP;
 403                 if (!(dev->features & NETIF_F_LRO))
 404                         changed = 1;
 405         } else if (dev->features & NETIF_F_LRO) {
 406                 changed = 1;
 407         }
 408
 409         if (changed) {
 410                 if (netif_running(dev)) {
 411                         mutex_lock(&mdev->state_lock);
 412                         mlx4_en_stop_port(dev);
 413                 }
 414                 dev->features ^= NETIF_F_LRO;
 415                 if (netif_running(dev)) {
 416                         rc = mlx4_en_start_port(dev);
 417                         if (rc)
 418                                 en_err(priv, "Failed to restart port\n");
 419                         mutex_unlock(&mdev->state_lock);
 420                 }
 421         }
 422
 423         return rc;
 424 }
 425
 426 const struct ethtool_ops mlx4_en_ethtool_ops = {
 427         .get_drvinfo = mlx4_en_get_drvinfo,
 428         .get_settings = mlx4_en_get_settings,
 429         .set_settings = mlx4_en_set_settings,
 430 #ifdef NETIF_F_TSO
 431         .get_tso = mlx4_en_get_tso,
 432         .set_tso = mlx4_en_set_tso,
 433 #endif
 434         .get_sg = ethtool_op_get_sg,
 435         .set_sg = ethtool_op_set_sg,
 436         .get_link = ethtool_op_get_link,
 437         .get_rx_csum = mlx4_en_get_rx_csum,
 438         .set_rx_csum = mlx4_en_set_rx_csum,
 439         .get_tx_csum = ethtool_op_get_tx_csum,
 440         .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
 441         .get_strings = mlx4_en_get_strings,
 442         .get_sset_count = mlx4_en_get_sset_count,
 443         .get_ethtool_stats = mlx4_en_get_ethtool_stats,
 444         .get_wol = mlx4_en_get_wol,
 445         .get_msglevel = mlx4_en_get_msglevel,
 446         .set_msglevel = mlx4_en_set_msglevel,
 447         .get_coalesce = mlx4_en_get_coalesce,
 448         .set_coalesce = mlx4_en_set_coalesce,
 449         .get_pauseparam = mlx4_en_get_pauseparam,
 450         .set_pauseparam = mlx4_en_set_pauseparam,
 451         .get_ringparam = mlx4_en_get_ringparam,
 452         .set_ringparam = mlx4_en_set_ringparam,
 453         .get_flags = ethtool_op_get_flags,
 454         .set_flags = mlx4_ethtool_op_set_flags,
 455 };