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