drivers/net/ethernet/cisco/enic/enic_ethtool.c

   1 /**
   2  * Copyright 2013 Cisco Systems, Inc.  All rights reserved.
   3  *
   4  * This program is free software; you may redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15  * SOFTWARE.
  16  *
  17  */
  18
  19 #include <linux/netdevice.h>
  20 #include <linux/ethtool.h>
  21
  22 #include "enic_res.h"
  23 #include "enic.h"
  24 #include "enic_dev.h"
  25 #include "enic_clsf.h"
  26 #include "vnic_rss.h"
  27 #include "vnic_stats.h"
  28
  29 struct enic_stat {
  30         char name[ETH_GSTRING_LEN];
  31         unsigned int index;
  32 };
  33
  34 #define ENIC_TX_STAT(stat) { \
  35         .name = #stat, \
  36         .index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
  37 }
  38
  39 #define ENIC_RX_STAT(stat) { \
  40         .name = #stat, \
  41         .index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
  42 }
  43
  44 #define ENIC_GEN_STAT(stat) { \
  45         .name = #stat, \
  46         .index = offsetof(struct vnic_gen_stats, stat) / sizeof(u64)\
  47 }
  48
  49 static const struct enic_stat enic_tx_stats[] = {
  50         ENIC_TX_STAT(tx_frames_ok),
  51         ENIC_TX_STAT(tx_unicast_frames_ok),
  52         ENIC_TX_STAT(tx_multicast_frames_ok),
  53         ENIC_TX_STAT(tx_broadcast_frames_ok),
  54         ENIC_TX_STAT(tx_bytes_ok),
  55         ENIC_TX_STAT(tx_unicast_bytes_ok),
  56         ENIC_TX_STAT(tx_multicast_bytes_ok),
  57         ENIC_TX_STAT(tx_broadcast_bytes_ok),
  58         ENIC_TX_STAT(tx_drops),
  59         ENIC_TX_STAT(tx_errors),
  60         ENIC_TX_STAT(tx_tso),
  61 };
  62
  63 static const struct enic_stat enic_rx_stats[] = {
  64         ENIC_RX_STAT(rx_frames_ok),
  65         ENIC_RX_STAT(rx_frames_total),
  66         ENIC_RX_STAT(rx_unicast_frames_ok),
  67         ENIC_RX_STAT(rx_multicast_frames_ok),
  68         ENIC_RX_STAT(rx_broadcast_frames_ok),
  69         ENIC_RX_STAT(rx_bytes_ok),
  70         ENIC_RX_STAT(rx_unicast_bytes_ok),
  71         ENIC_RX_STAT(rx_multicast_bytes_ok),
  72         ENIC_RX_STAT(rx_broadcast_bytes_ok),
  73         ENIC_RX_STAT(rx_drop),
  74         ENIC_RX_STAT(rx_no_bufs),
  75         ENIC_RX_STAT(rx_errors),
  76         ENIC_RX_STAT(rx_rss),
  77         ENIC_RX_STAT(rx_crc_errors),
  78         ENIC_RX_STAT(rx_frames_64),
  79         ENIC_RX_STAT(rx_frames_127),
  80         ENIC_RX_STAT(rx_frames_255),
  81         ENIC_RX_STAT(rx_frames_511),
  82         ENIC_RX_STAT(rx_frames_1023),
  83         ENIC_RX_STAT(rx_frames_1518),
  84         ENIC_RX_STAT(rx_frames_to_max),
  85 };
  86
  87 static const struct enic_stat enic_gen_stats[] = {
  88         ENIC_GEN_STAT(dma_map_error),
  89 };
  90
  91 static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
  92 static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
  93 static const unsigned int enic_n_gen_stats = ARRAY_SIZE(enic_gen_stats);
  94
  95 static void enic_intr_coal_set_rx(struct enic *enic, u32 timer)
  96 {
  97         int i;
  98         int intr;
  99
 100         for (i = 0; i < enic->rq_count; i++) {
 101                 intr = enic_msix_rq_intr(enic, i);
 102                 vnic_intr_coalescing_timer_set(&enic->intr[intr], timer);
 103         }
 104 }
 105
 106 static int enic_get_settings(struct net_device *netdev,
 107         struct ethtool_cmd *ecmd)
 108 {
 109         struct enic *enic = netdev_priv(netdev);
 110
 111         ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
 112         ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
 113         ecmd->port = PORT_FIBRE;
 114         ecmd->transceiver = XCVR_EXTERNAL;
 115
 116         if (netif_carrier_ok(netdev)) {
 117                 ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev));
 118                 ecmd->duplex = DUPLEX_FULL;
 119         } else {
 120                 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
 121                 ecmd->duplex = DUPLEX_UNKNOWN;
 122         }
 123
 124         ecmd->autoneg = AUTONEG_DISABLE;
 125
 126         return 0;
 127 }
 128
 129 static void enic_get_drvinfo(struct net_device *netdev,
 130         struct ethtool_drvinfo *drvinfo)
 131 {
 132         struct enic *enic = netdev_priv(netdev);
 133         struct vnic_devcmd_fw_info *fw_info;
 134
 135         enic_dev_fw_info(enic, &fw_info);
 136
 137         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 138         strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
 139         strlcpy(drvinfo->fw_version, fw_info->fw_version,
 140                 sizeof(drvinfo->fw_version));
 141         strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
 142                 sizeof(drvinfo->bus_info));
 143 }
 144
 145 static void enic_get_strings(struct net_device *netdev, u32 stringset,
 146         u8 *data)
 147 {
 148         unsigned int i;
 149
 150         switch (stringset) {
 151         case ETH_SS_STATS:
 152                 for (i = 0; i < enic_n_tx_stats; i++) {
 153                         memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
 154                         data += ETH_GSTRING_LEN;
 155                 }
 156                 for (i = 0; i < enic_n_rx_stats; i++) {
 157                         memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
 158                         data += ETH_GSTRING_LEN;
 159                 }
 160                 for (i = 0; i < enic_n_gen_stats; i++) {
 161                         memcpy(data, enic_gen_stats[i].name, ETH_GSTRING_LEN);
 162                         data += ETH_GSTRING_LEN;
 163                 }
 164                 break;
 165         }
 166 }
 167
 168 static int enic_get_sset_count(struct net_device *netdev, int sset)
 169 {
 170         switch (sset) {
 171         case ETH_SS_STATS:
 172                 return enic_n_tx_stats + enic_n_rx_stats + enic_n_gen_stats;
 173         default:
 174                 return -EOPNOTSUPP;
 175         }
 176 }
 177
 178 static void enic_get_ethtool_stats(struct net_device *netdev,
 179         struct ethtool_stats *stats, u64 *data)
 180 {
 181         struct enic *enic = netdev_priv(netdev);
 182         struct vnic_stats *vstats;
 183         unsigned int i;
 184
 185         enic_dev_stats_dump(enic, &vstats);
 186
 187         for (i = 0; i < enic_n_tx_stats; i++)
 188                 *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].index];
 189         for (i = 0; i < enic_n_rx_stats; i++)
 190                 *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].index];
 191         for (i = 0; i < enic_n_gen_stats; i++)
 192                 *(data++) = ((u64 *)&enic->gen_stats)[enic_gen_stats[i].index];
 193 }
 194
 195 static u32 enic_get_msglevel(struct net_device *netdev)
 196 {
 197         struct enic *enic = netdev_priv(netdev);
 198         return enic->msg_enable;
 199 }
 200
 201 static void enic_set_msglevel(struct net_device *netdev, u32 value)
 202 {
 203         struct enic *enic = netdev_priv(netdev);
 204         enic->msg_enable = value;
 205 }
 206
 207 static int enic_get_coalesce(struct net_device *netdev,
 208         struct ethtool_coalesce *ecmd)
 209 {
 210         struct enic *enic = netdev_priv(netdev);
 211         struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
 212
 213         ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
 214         ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
 215         if (rxcoal->use_adaptive_rx_coalesce)
 216                 ecmd->use_adaptive_rx_coalesce = 1;
 217         ecmd->rx_coalesce_usecs_low = rxcoal->small_pkt_range_start;
 218         ecmd->rx_coalesce_usecs_high = rxcoal->range_end;
 219
 220         return 0;
 221 }
 222
 223 static int enic_set_coalesce(struct net_device *netdev,
 224         struct ethtool_coalesce *ecmd)
 225 {
 226         struct enic *enic = netdev_priv(netdev);
 227         u32 tx_coalesce_usecs;
 228         u32 rx_coalesce_usecs;
 229         u32 rx_coalesce_usecs_low;
 230         u32 rx_coalesce_usecs_high;
 231         u32 coalesce_usecs_max;
 232         unsigned int i, intr;
 233         struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
 234
 235         coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
 236         tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
 237                                   coalesce_usecs_max);
 238         rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
 239                                   coalesce_usecs_max);
 240
 241         rx_coalesce_usecs_low = min_t(u32, ecmd->rx_coalesce_usecs_low,
 242                                       coalesce_usecs_max);
 243         rx_coalesce_usecs_high = min_t(u32, ecmd->rx_coalesce_usecs_high,
 244                                        coalesce_usecs_max);
 245
 246         switch (vnic_dev_get_intr_mode(enic->vdev)) {
 247         case VNIC_DEV_INTR_MODE_INTX:
 248                 if (tx_coalesce_usecs != rx_coalesce_usecs)
 249                         return -EINVAL;
 250                 if (ecmd->use_adaptive_rx_coalesce      ||
 251                     ecmd->rx_coalesce_usecs_low         ||
 252                     ecmd->rx_coalesce_usecs_high)
 253                         return -EINVAL;
 254
 255                 intr = enic_legacy_io_intr();
 256                 vnic_intr_coalescing_timer_set(&enic->intr[intr],
 257                         tx_coalesce_usecs);
 258                 break;
 259         case VNIC_DEV_INTR_MODE_MSI:
 260                 if (tx_coalesce_usecs != rx_coalesce_usecs)
 261                         return -EINVAL;
 262                 if (ecmd->use_adaptive_rx_coalesce      ||
 263                     ecmd->rx_coalesce_usecs_low         ||
 264                     ecmd->rx_coalesce_usecs_high)
 265                         return -EINVAL;
 266
 267                 vnic_intr_coalescing_timer_set(&enic->intr[0],
 268                         tx_coalesce_usecs);
 269                 break;
 270         case VNIC_DEV_INTR_MODE_MSIX:
 271                 if (ecmd->rx_coalesce_usecs_high &&
 272                     (rx_coalesce_usecs_high <
 273                      rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF))
 274                                 return -EINVAL;
 275
 276                 for (i = 0; i < enic->wq_count; i++) {
 277                         intr = enic_msix_wq_intr(enic, i);
 278                         vnic_intr_coalescing_timer_set(&enic->intr[intr],
 279                                 tx_coalesce_usecs);
 280                 }
 281
 282                 rxcoal->use_adaptive_rx_coalesce =
 283                                         !!ecmd->use_adaptive_rx_coalesce;
 284                 if (!rxcoal->use_adaptive_rx_coalesce)
 285                         enic_intr_coal_set_rx(enic, rx_coalesce_usecs);
 286
 287                 if (ecmd->rx_coalesce_usecs_high) {
 288                         rxcoal->range_end = rx_coalesce_usecs_high;
 289                         rxcoal->small_pkt_range_start = rx_coalesce_usecs_low;
 290                         rxcoal->large_pkt_range_start = rx_coalesce_usecs_low +
 291                                                         ENIC_AIC_LARGE_PKT_DIFF;
 292                 }
 293                 break;
 294         default:
 295                 break;
 296         }
 297
 298         enic->tx_coalesce_usecs = tx_coalesce_usecs;
 299         enic->rx_coalesce_usecs = rx_coalesce_usecs;
 300
 301         return 0;
 302 }
 303
 304 static int enic_grxclsrlall(struct enic *enic, struct ethtool_rxnfc *cmd,
 305                             u32 *rule_locs)
 306 {
 307         int j, ret = 0, cnt = 0;
 308
 309         cmd->data = enic->rfs_h.max - enic->rfs_h.free;
 310         for (j = 0; j < (1 << ENIC_RFS_FLW_BITSHIFT); j++) {
 311                 struct hlist_head *hhead;
 312                 struct hlist_node *tmp;
 313                 struct enic_rfs_fltr_node *n;
 314
 315                 hhead = &enic->rfs_h.ht_head[j];
 316                 hlist_for_each_entry_safe(n, tmp, hhead, node) {
 317                         if (cnt == cmd->rule_cnt)
 318                                 return -EMSGSIZE;
 319                         rule_locs[cnt] = n->fltr_id;
 320                         cnt++;
 321                 }
 322         }
 323         cmd->rule_cnt = cnt;
 324
 325         return ret;
 326 }
 327
 328 static int enic_grxclsrule(struct enic *enic, struct ethtool_rxnfc *cmd)
 329 {
 330         struct ethtool_rx_flow_spec *fsp =
 331                                 (struct ethtool_rx_flow_spec *)&cmd->fs;
 332         struct enic_rfs_fltr_node *n;
 333
 334         n = htbl_fltr_search(enic, (u16)fsp->location);
 335         if (!n)
 336                 return -EINVAL;
 337         switch (n->keys.ip_proto) {
 338         case IPPROTO_TCP:
 339                 fsp->flow_type = TCP_V4_FLOW;
 340                 break;
 341         case IPPROTO_UDP:
 342                 fsp->flow_type = UDP_V4_FLOW;
 343                 break;
 344         default:
 345                 return -EINVAL;
 346                 break;
 347         }
 348
 349         fsp->h_u.tcp_ip4_spec.ip4src = n->keys.src;
 350         fsp->m_u.tcp_ip4_spec.ip4src = (__u32)~0;
 351
 352         fsp->h_u.tcp_ip4_spec.ip4dst = n->keys.dst;
 353         fsp->m_u.tcp_ip4_spec.ip4dst = (__u32)~0;
 354
 355         fsp->h_u.tcp_ip4_spec.psrc = n->keys.port16[0];
 356         fsp->m_u.tcp_ip4_spec.psrc = (__u16)~0;
 357
 358         fsp->h_u.tcp_ip4_spec.pdst = n->keys.port16[1];
 359         fsp->m_u.tcp_ip4_spec.pdst = (__u16)~0;
 360
 361         fsp->ring_cookie = n->rq_id;
 362
 363         return 0;
 364 }
 365
 366 static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 367                           u32 *rule_locs)
 368 {
 369         struct enic *enic = netdev_priv(dev);
 370         int ret = 0;
 371
 372         switch (cmd->cmd) {
 373         case ETHTOOL_GRXRINGS:
 374                 cmd->data = enic->rq_count;
 375                 break;
 376         case ETHTOOL_GRXCLSRLCNT:
 377                 spin_lock_bh(&enic->rfs_h.lock);
 378                 cmd->rule_cnt = enic->rfs_h.max - enic->rfs_h.free;
 379                 cmd->data = enic->rfs_h.max;
 380                 spin_unlock_bh(&enic->rfs_h.lock);
 381                 break;
 382         case ETHTOOL_GRXCLSRLALL:
 383                 spin_lock_bh(&enic->rfs_h.lock);
 384                 ret = enic_grxclsrlall(enic, cmd, rule_locs);
 385                 spin_unlock_bh(&enic->rfs_h.lock);
 386                 break;
 387         case ETHTOOL_GRXCLSRULE:
 388                 spin_lock_bh(&enic->rfs_h.lock);
 389                 ret = enic_grxclsrule(enic, cmd);
 390                 spin_unlock_bh(&enic->rfs_h.lock);
 391                 break;
 392         default:
 393                 ret = -EOPNOTSUPP;
 394                 break;
 395         }
 396
 397         return ret;
 398 }
 399
 400 static int enic_get_tunable(struct net_device *dev,
 401                             const struct ethtool_tunable *tuna, void *data)
 402 {
 403         struct enic *enic = netdev_priv(dev);
 404         int ret = 0;
 405
 406         switch (tuna->id) {
 407         case ETHTOOL_RX_COPYBREAK:
 408                 *(u32 *)data = enic->rx_copybreak;
 409                 break;
 410         default:
 411                 ret = -EINVAL;
 412                 break;
 413         }
 414
 415         return ret;
 416 }
 417
 418 static int enic_set_tunable(struct net_device *dev,
 419                             const struct ethtool_tunable *tuna,
 420                             const void *data)
 421 {
 422         struct enic *enic = netdev_priv(dev);
 423         int ret = 0;
 424
 425         switch (tuna->id) {
 426         case ETHTOOL_RX_COPYBREAK:
 427                 enic->rx_copybreak = *(u32 *)data;
 428                 break;
 429         default:
 430                 ret = -EINVAL;
 431                 break;
 432         }
 433
 434         return ret;
 435 }
 436
 437 static u32 enic_get_rxfh_key_size(struct net_device *netdev)
 438 {
 439         return ENIC_RSS_LEN;
 440 }
 441
 442 static int enic_get_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey,
 443                          u8 *hfunc)
 444 {
 445         struct enic *enic = netdev_priv(netdev);
 446
 447         if (hkey)
 448                 memcpy(hkey, enic->rss_key, ENIC_RSS_LEN);
 449
 450         if (hfunc)
 451                 *hfunc = ETH_RSS_HASH_TOP;
 452
 453         return 0;
 454 }
 455
 456 static int enic_set_rxfh(struct net_device *netdev, const u32 *indir,
 457                          const u8 *hkey, const u8 hfunc)
 458 {
 459         struct enic *enic = netdev_priv(netdev);
 460
 461         if ((hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) ||
 462             indir)
 463                 return -EINVAL;
 464
 465         if (hkey)
 466                 memcpy(enic->rss_key, hkey, ENIC_RSS_LEN);
 467
 468         return __enic_set_rsskey(enic);
 469 }
 470
 471 static const struct ethtool_ops enic_ethtool_ops = {
 472         .get_settings = enic_get_settings,
 473         .get_drvinfo = enic_get_drvinfo,
 474         .get_msglevel = enic_get_msglevel,
 475         .set_msglevel = enic_set_msglevel,
 476         .get_link = ethtool_op_get_link,
 477         .get_strings = enic_get_strings,
 478         .get_sset_count = enic_get_sset_count,
 479         .get_ethtool_stats = enic_get_ethtool_stats,
 480         .get_coalesce = enic_get_coalesce,
 481         .set_coalesce = enic_set_coalesce,
 482         .get_rxnfc = enic_get_rxnfc,
 483         .get_tunable = enic_get_tunable,
 484         .set_tunable = enic_set_tunable,
 485         .get_rxfh_key_size = enic_get_rxfh_key_size,
 486         .get_rxfh = enic_get_rxfh,
 487         .set_rxfh = enic_set_rxfh,
 488 };
 489
 490 void enic_set_ethtool_ops(struct net_device *netdev)
 491 {
 492         netdev->ethtool_ops = &enic_ethtool_ops;
 493 }