drivers/net/mlx4/en_params.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 #define MLX4_EN_PARM_INT(X, def_val, desc) \
  42         static unsigned int X = def_val;\
  43         module_param(X , uint, 0444); \
  44         MODULE_PARM_DESC(X, desc);
  45
  46
  47 /*
  48  * Device scope module parameters
  49  */
  50
  51
  52 /* Use a XOR rathern than Toeplitz hash function for RSS */
  53 MLX4_EN_PARM_INT(rss_xor, 0, "Use XOR hash function for RSS");
  54
  55 /* RSS hash type mask - default to <saddr, daddr, sport, dport> */
  56 MLX4_EN_PARM_INT(rss_mask, 0xf, "RSS hash type bitmask");
  57
  58 /* Number of LRO sessions per Rx ring (rounded up to a power of two) */
  59 MLX4_EN_PARM_INT(num_lro, MLX4_EN_MAX_LRO_DESCRIPTORS,
  60                  "Number of LRO sessions per ring or disabled (0)");
  61
  62 /* Priority pausing */
  63 MLX4_EN_PARM_INT(pptx, MLX4_EN_DEF_TX_PAUSE,
  64                  "Pause policy on TX: 0 never generate pause frames "
  65                  "1 generate pause frames according to RX buffer threshold");
  66 MLX4_EN_PARM_INT(pprx, MLX4_EN_DEF_RX_PAUSE,
  67                  "Pause policy on RX: 0 ignore received pause frames "
  68                  "1 respect received pause frames");
  69 MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
  70                            " Per priority bit mask");
  71 MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
  72                            " Per priority bit mask");
  73
  74 MLX4_EN_PARM_INT(rx_ring_num1, 0, "Number or Rx rings for port 1 (0 = #cores)");
  75 MLX4_EN_PARM_INT(rx_ring_num2, 0, "Number or Rx rings for port 2 (0 = #cores)");
  76
  77 MLX4_EN_PARM_INT(tx_ring_size1, MLX4_EN_AUTO_CONF, "Tx ring size for port 1");
  78 MLX4_EN_PARM_INT(tx_ring_size2, MLX4_EN_AUTO_CONF, "Tx ring size for port 2");
  79 MLX4_EN_PARM_INT(rx_ring_size1, MLX4_EN_AUTO_CONF, "Rx ring size for port 1");
  80 MLX4_EN_PARM_INT(rx_ring_size2, MLX4_EN_AUTO_CONF, "Rx ring size for port 2");
  81
  82
  83 int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
  84 {
  85         struct mlx4_en_profile *params = &mdev->profile;
  86         int i;
  87
  88         params->rss_xor = (rss_xor != 0);
  89         params->rss_mask = rss_mask & 0x1f;
  90         params->num_lro = min_t(int, num_lro , MLX4_EN_MAX_LRO_DESCRIPTORS);
  91         for (i = 1; i <= MLX4_MAX_PORTS; i++) {
  92                 params->prof[i].rx_pause = pprx;
  93                 params->prof[i].rx_ppp = pfcrx;
  94                 params->prof[i].tx_pause = pptx;
  95                 params->prof[i].tx_ppp = pfctx;
  96         }
  97         if (pfcrx || pfctx) {
  98                 params->prof[1].tx_ring_num = MLX4_EN_TX_RING_NUM;
  99                 params->prof[2].tx_ring_num = MLX4_EN_TX_RING_NUM;
 100         } else {
 101                 params->prof[1].tx_ring_num = 1;
 102                 params->prof[2].tx_ring_num = 1;
 103         }
 104         params->prof[1].rx_ring_num = min_t(int, rx_ring_num1, MAX_RX_RINGS);
 105         params->prof[2].rx_ring_num = min_t(int, rx_ring_num2, MAX_RX_RINGS);
 106
 107         if (tx_ring_size1 == MLX4_EN_AUTO_CONF)
 108                 tx_ring_size1 = MLX4_EN_DEF_TX_RING_SIZE;
 109         params->prof[1].tx_ring_size =
 110                 (tx_ring_size1 < MLX4_EN_MIN_TX_SIZE) ?
 111                  MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size1);
 112
 113         if (tx_ring_size2 == MLX4_EN_AUTO_CONF)
 114                 tx_ring_size2 = MLX4_EN_DEF_TX_RING_SIZE;
 115         params->prof[2].tx_ring_size =
 116                 (tx_ring_size2 < MLX4_EN_MIN_TX_SIZE) ?
 117                  MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size2);
 118
 119         if (rx_ring_size1 == MLX4_EN_AUTO_CONF)
 120                 rx_ring_size1 = MLX4_EN_DEF_RX_RING_SIZE;
 121         params->prof[1].rx_ring_size =
 122                 (rx_ring_size1 < MLX4_EN_MIN_RX_SIZE) ?
 123                  MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size1);
 124
 125         if (rx_ring_size2 == MLX4_EN_AUTO_CONF)
 126                 rx_ring_size2 = MLX4_EN_DEF_RX_RING_SIZE;
 127         params->prof[2].rx_ring_size =
 128                 (rx_ring_size2 < MLX4_EN_MIN_RX_SIZE) ?
 129                  MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size2);
 130         return 0;
 131 }
 132
 133
 134 /*
 135  * Ethtool support
 136  */
 137
 138 static void mlx4_en_update_lro_stats(struct mlx4_en_priv *priv)
 139 {
 140         int i;
 141
 142         priv->port_stats.lro_aggregated = 0;
 143         priv->port_stats.lro_flushed = 0;
 144         priv->port_stats.lro_no_desc = 0;
 145
 146         for (i = 0; i < priv->rx_ring_num; i++) {
 147                 priv->port_stats.lro_aggregated += priv->rx_ring[i].lro.stats.aggregated;
 148                 priv->port_stats.lro_flushed += priv->rx_ring[i].lro.stats.flushed;
 149                 priv->port_stats.lro_no_desc += priv->rx_ring[i].lro.stats.no_desc;
 150         }
 151 }
 152
 153 static void
 154 mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
 155 {
 156         struct mlx4_en_priv *priv = netdev_priv(dev);
 157         struct mlx4_en_dev *mdev = priv->mdev;
 158
 159         sprintf(drvinfo->driver, DRV_NAME " (%s)", mdev->dev->board_id);
 160         strncpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")", 32);
 161         sprintf(drvinfo->fw_version, "%d.%d.%d",
 162                 (u16) (mdev->dev->caps.fw_ver >> 32),
 163                 (u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
 164                 (u16) (mdev->dev->caps.fw_ver & 0xffff));
 165         strncpy(drvinfo->bus_info, pci_name(mdev->dev->pdev), 32);
 166         drvinfo->n_stats = 0;
 167         drvinfo->regdump_len = 0;
 168         drvinfo->eedump_len = 0;
 169 }
 170
 171 static u32 mlx4_en_get_tso(struct net_device *dev)
 172 {
 173         return (dev->features & NETIF_F_TSO) != 0;
 174 }
 175
 176 static int mlx4_en_set_tso(struct net_device *dev, u32 data)
 177 {
 178         struct mlx4_en_priv *priv = netdev_priv(dev);
 179
 180         if (data) {
 181                 if (!priv->mdev->LSO_support)
 182                         return -EPERM;
 183                 dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
 184         } else
 185                 dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
 186         return 0;
 187 }
 188
 189 static u32 mlx4_en_get_rx_csum(struct net_device *dev)
 190 {
 191         struct mlx4_en_priv *priv = netdev_priv(dev);
 192         return priv->rx_csum;
 193 }
 194
 195 static int mlx4_en_set_rx_csum(struct net_device *dev, u32 data)
 196 {
 197         struct mlx4_en_priv *priv = netdev_priv(dev);
 198         priv->rx_csum = (data != 0);
 199         return 0;
 200 }
 201
 202 static const char main_strings[][ETH_GSTRING_LEN] = {
 203         "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
 204         "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
 205         "rx_length_errors", "rx_over_errors", "rx_crc_errors",
 206         "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
 207         "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
 208         "tx_heartbeat_errors", "tx_window_errors",
 209
 210         /* port statistics */
 211         "lro_aggregated", "lro_flushed", "lro_no_desc", "tso_packets",
 212         "queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
 213         "rx_csum_good", "rx_csum_none", "tx_chksum_offload",
 214
 215         /* packet statistics */
 216         "broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
 217         "rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
 218         "tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
 219         "tx_prio_6", "tx_prio_7",
 220 };
 221 #define NUM_MAIN_STATS  21
 222 #define NUM_ALL_STATS   (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
 223
 224 static u32 mlx4_en_get_msglevel(struct net_device *dev)
 225 {
 226         return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
 227 }
 228
 229 static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
 230 {
 231         ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
 232 }
 233
 234 static void mlx4_en_get_wol(struct net_device *netdev,
 235                             struct ethtool_wolinfo *wol)
 236 {
 237         wol->supported = 0;
 238         wol->wolopts = 0;
 239
 240         return;
 241 }
 242
 243 static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
 244 {
 245         struct mlx4_en_priv *priv = netdev_priv(dev);
 246
 247         if (sset != ETH_SS_STATS)
 248                 return -EOPNOTSUPP;
 249
 250         return NUM_ALL_STATS + (priv->tx_ring_num + priv->rx_ring_num) * 2;
 251 }
 252
 253 static void mlx4_en_get_ethtool_stats(struct net_device *dev,
 254                 struct ethtool_stats *stats, uint64_t *data)
 255 {
 256         struct mlx4_en_priv *priv = netdev_priv(dev);
 257         int index = 0;
 258         int i;
 259
 260         spin_lock_bh(&priv->stats_lock);
 261
 262         mlx4_en_update_lro_stats(priv);
 263
 264         for (i = 0; i < NUM_MAIN_STATS; i++)
 265                 data[index++] = ((unsigned long *) &priv->stats)[i];
 266         for (i = 0; i < NUM_PORT_STATS; i++)
 267                 data[index++] = ((unsigned long *) &priv->port_stats)[i];
 268         for (i = 0; i < priv->tx_ring_num; i++) {
 269                 data[index++] = priv->tx_ring[i].packets;
 270                 data[index++] = priv->tx_ring[i].bytes;
 271         }
 272         for (i = 0; i < priv->rx_ring_num; i++) {
 273                 data[index++] = priv->rx_ring[i].packets;
 274                 data[index++] = priv->rx_ring[i].bytes;
 275         }
 276         for (i = 0; i < NUM_PKT_STATS; i++)
 277                 data[index++] = ((unsigned long *) &priv->pkstats)[i];
 278         spin_unlock_bh(&priv->stats_lock);
 279
 280 }
 281
 282 static void mlx4_en_get_strings(struct net_device *dev,
 283                                 uint32_t stringset, uint8_t *data)
 284 {
 285         struct mlx4_en_priv *priv = netdev_priv(dev);
 286         int index = 0;
 287         int i;
 288
 289         if (stringset != ETH_SS_STATS)
 290                 return;
 291
 292         /* Add main counters */
 293         for (i = 0; i < NUM_MAIN_STATS; i++)
 294                 strcpy(data + (index++) * ETH_GSTRING_LEN, main_strings[i]);
 295         for (i = 0; i < NUM_PORT_STATS; i++)
 296                 strcpy(data + (index++) * ETH_GSTRING_LEN,
 297                         main_strings[i + NUM_MAIN_STATS]);
 298         for (i = 0; i < priv->tx_ring_num; i++) {
 299                 sprintf(data + (index++) * ETH_GSTRING_LEN,
 300                         "tx%d_packets", i);
 301                 sprintf(data + (index++) * ETH_GSTRING_LEN,
 302                         "tx%d_bytes", i);
 303         }
 304         for (i = 0; i < priv->rx_ring_num; i++) {
 305                 sprintf(data + (index++) * ETH_GSTRING_LEN,
 306                         "rx%d_packets", i);
 307                 sprintf(data + (index++) * ETH_GSTRING_LEN,
 308                         "rx%d_bytes", i);
 309         }
 310         for (i = 0; i < NUM_PKT_STATS; i++)
 311                 strcpy(data + (index++) * ETH_GSTRING_LEN,
 312                         main_strings[i + NUM_MAIN_STATS + NUM_PORT_STATS]);
 313 }
 314
 315 static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 316 {
 317         cmd->autoneg = AUTONEG_DISABLE;
 318         cmd->supported = SUPPORTED_10000baseT_Full;
 319         cmd->advertising = SUPPORTED_10000baseT_Full;
 320         if (netif_carrier_ok(dev)) {
 321                 cmd->speed = SPEED_10000;
 322                 cmd->duplex = DUPLEX_FULL;
 323         } else {
 324                 cmd->speed = -1;
 325                 cmd->duplex = -1;
 326         }
 327         return 0;
 328 }
 329
 330 static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 331 {
 332         if ((cmd->autoneg == AUTONEG_ENABLE) ||
 333             (cmd->speed != SPEED_10000) || (cmd->duplex != DUPLEX_FULL))
 334                 return -EINVAL;
 335
 336         /* Nothing to change */
 337         return 0;
 338 }
 339
 340 static int mlx4_en_get_coalesce(struct net_device *dev,
 341                               struct ethtool_coalesce *coal)
 342 {
 343         struct mlx4_en_priv *priv = netdev_priv(dev);
 344
 345         coal->tx_coalesce_usecs = 0;
 346         coal->tx_max_coalesced_frames = 0;
 347         coal->rx_coalesce_usecs = priv->rx_usecs;
 348         coal->rx_max_coalesced_frames = priv->rx_frames;
 349
 350         coal->pkt_rate_low = priv->pkt_rate_low;
 351         coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
 352         coal->pkt_rate_high = priv->pkt_rate_high;
 353         coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
 354         coal->rate_sample_interval = priv->sample_interval;
 355         coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
 356         return 0;
 357 }
 358
 359 static int mlx4_en_set_coalesce(struct net_device *dev,
 360                               struct ethtool_coalesce *coal)
 361 {
 362         struct mlx4_en_priv *priv = netdev_priv(dev);
 363         int err, i;
 364
 365         priv->rx_frames = (coal->rx_max_coalesced_frames ==
 366                            MLX4_EN_AUTO_CONF) ?
 367                                 MLX4_EN_RX_COAL_TARGET /
 368                                 priv->dev->mtu + 1 :
 369                                 coal->rx_max_coalesced_frames;
 370         priv->rx_usecs = (coal->rx_coalesce_usecs ==
 371                           MLX4_EN_AUTO_CONF) ?
 372                                 MLX4_EN_RX_COAL_TIME :
 373                                 coal->rx_coalesce_usecs;
 374
 375         /* Set adaptive coalescing params */
 376         priv->pkt_rate_low = coal->pkt_rate_low;
 377         priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
 378         priv->pkt_rate_high = coal->pkt_rate_high;
 379         priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
 380         priv->sample_interval = coal->rate_sample_interval;
 381         priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
 382         priv->last_moder_time = MLX4_EN_AUTO_CONF;
 383         if (priv->adaptive_rx_coal)
 384                 return 0;
 385
 386         for (i = 0; i < priv->rx_ring_num; i++) {
 387                 priv->rx_cq[i].moder_cnt = priv->rx_frames;
 388                 priv->rx_cq[i].moder_time = priv->rx_usecs;
 389                 err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
 390                 if (err)
 391                         return err;
 392         }
 393         return 0;
 394 }
 395
 396 static int mlx4_en_set_pauseparam(struct net_device *dev,
 397                                 struct ethtool_pauseparam *pause)
 398 {
 399         struct mlx4_en_priv *priv = netdev_priv(dev);
 400         struct mlx4_en_dev *mdev = priv->mdev;
 401         int err;
 402
 403         priv->prof->tx_pause = pause->tx_pause != 0;
 404         priv->prof->rx_pause = pause->rx_pause != 0;
 405         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
 406                                     priv->rx_skb_size + ETH_FCS_LEN,
 407                                     priv->prof->tx_pause,
 408                                     priv->prof->tx_ppp,
 409                                     priv->prof->rx_pause,
 410                                     priv->prof->rx_ppp);
 411         if (err)
 412                 mlx4_err(mdev, "Failed setting pause params to\n");
 413
 414         return err;
 415 }
 416
 417 static void mlx4_en_get_pauseparam(struct net_device *dev,
 418                                  struct ethtool_pauseparam *pause)
 419 {
 420         struct mlx4_en_priv *priv = netdev_priv(dev);
 421
 422         pause->tx_pause = priv->prof->tx_pause;
 423         pause->rx_pause = priv->prof->rx_pause;
 424 }
 425
 426 static void mlx4_en_get_ringparam(struct net_device *dev,
 427                                   struct ethtool_ringparam *param)
 428 {
 429         struct mlx4_en_priv *priv = netdev_priv(dev);
 430         struct mlx4_en_dev *mdev = priv->mdev;
 431
 432         memset(param, 0, sizeof(*param));
 433         param->rx_max_pending = mdev->dev->caps.max_rq_sg;
 434         param->tx_max_pending = mdev->dev->caps.max_sq_sg;
 435         param->rx_pending = mdev->profile.prof[priv->port].rx_ring_size;
 436         param->tx_pending = mdev->profile.prof[priv->port].tx_ring_size;
 437 }
 438
 439 const struct ethtool_ops mlx4_en_ethtool_ops = {
 440         .get_drvinfo = mlx4_en_get_drvinfo,
 441         .get_settings = mlx4_en_get_settings,
 442         .set_settings = mlx4_en_set_settings,
 443 #ifdef NETIF_F_TSO
 444         .get_tso = mlx4_en_get_tso,
 445         .set_tso = mlx4_en_set_tso,
 446 #endif
 447         .get_sg = ethtool_op_get_sg,
 448         .set_sg = ethtool_op_set_sg,
 449         .get_link = ethtool_op_get_link,
 450         .get_rx_csum = mlx4_en_get_rx_csum,
 451         .set_rx_csum = mlx4_en_set_rx_csum,
 452         .get_tx_csum = ethtool_op_get_tx_csum,
 453         .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
 454         .get_strings = mlx4_en_get_strings,
 455         .get_sset_count = mlx4_en_get_sset_count,
 456         .get_ethtool_stats = mlx4_en_get_ethtool_stats,
 457         .get_wol = mlx4_en_get_wol,
 458         .get_msglevel = mlx4_en_get_msglevel,
 459         .set_msglevel = mlx4_en_set_msglevel,
 460         .get_coalesce = mlx4_en_get_coalesce,
 461         .set_coalesce = mlx4_en_set_coalesce,
 462         .get_pauseparam = mlx4_en_get_pauseparam,
 463         .set_pauseparam = mlx4_en_set_pauseparam,
 464         .get_ringparam = mlx4_en_get_ringparam,
 465         .get_flags = ethtool_op_get_flags,
 466         .set_flags = ethtool_op_set_flags,
 467 };
 468
 469
 470
 471
 472