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 #include <linux/net_tstamp.h>
  22
  23 #include "enic_res.h"
  24 #include "enic.h"
  25 #include "enic_dev.h"
  26 #include "enic_clsf.h"
  27 #include "vnic_rss.h"
  28 #include "vnic_stats.h"
  29
  30 struct enic_stat {
  31         char name[ETH_GSTRING_LEN];
  32         unsigned int index;
  33 };
  34
  35 #define ENIC_TX_STAT(stat) { \
  36         .name = #stat, \
  37         .index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
  38 }
  39
  40 #define ENIC_RX_STAT(stat) { \
  41         .name = #stat, \
  42         .index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
  43 }
  44
  45 #define ENIC_GEN_STAT(stat) { \
  46         .name = #stat, \
  47         .index = offsetof(struct vnic_gen_stats, stat) / sizeof(u64)\
  48 }
  49
  50 static const struct enic_stat enic_tx_stats[] = {
  51         ENIC_TX_STAT(tx_frames_ok),
  52         ENIC_TX_STAT(tx_unicast_frames_ok),
  53         ENIC_TX_STAT(tx_multicast_frames_ok),
  54         ENIC_TX_STAT(tx_broadcast_frames_ok),
  55         ENIC_TX_STAT(tx_bytes_ok),
  56         ENIC_TX_STAT(tx_unicast_bytes_ok),
  57         ENIC_TX_STAT(tx_multicast_bytes_ok),
  58         ENIC_TX_STAT(tx_broadcast_bytes_ok),
  59         ENIC_TX_STAT(tx_drops),
  60         ENIC_TX_STAT(tx_errors),
  61         ENIC_TX_STAT(tx_tso),
  62 };
  63
  64 static const struct enic_stat enic_rx_stats[] = {
  65         ENIC_RX_STAT(rx_frames_ok),
  66         ENIC_RX_STAT(rx_frames_total),
  67         ENIC_RX_STAT(rx_unicast_frames_ok),
  68         ENIC_RX_STAT(rx_multicast_frames_ok),
  69         ENIC_RX_STAT(rx_broadcast_frames_ok),
  70         ENIC_RX_STAT(rx_bytes_ok),
  71         ENIC_RX_STAT(rx_unicast_bytes_ok),
  72         ENIC_RX_STAT(rx_multicast_bytes_ok),
  73         ENIC_RX_STAT(rx_broadcast_bytes_ok),
  74         ENIC_RX_STAT(rx_drop),
  75         ENIC_RX_STAT(rx_no_bufs),
  76         ENIC_RX_STAT(rx_errors),
  77         ENIC_RX_STAT(rx_rss),
  78         ENIC_RX_STAT(rx_crc_errors),
  79         ENIC_RX_STAT(rx_frames_64),
  80         ENIC_RX_STAT(rx_frames_127),
  81         ENIC_RX_STAT(rx_frames_255),
  82         ENIC_RX_STAT(rx_frames_511),
  83         ENIC_RX_STAT(rx_frames_1023),
  84         ENIC_RX_STAT(rx_frames_1518),
  85         ENIC_RX_STAT(rx_frames_to_max),
  86 };
  87
  88 static const struct enic_stat enic_gen_stats[] = {
  89         ENIC_GEN_STAT(dma_map_error),
  90 };
  91
  92 static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
  93 static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
  94 static const unsigned int enic_n_gen_stats = ARRAY_SIZE(enic_gen_stats);
  95
  96 static void enic_intr_coal_set_rx(struct enic *enic, u32 timer)
  97 {
  98         int i;
  99         int intr;
 100
 101         for (i = 0; i < enic->rq_count; i++) {
 102                 intr = enic_msix_rq_intr(enic, i);
 103                 vnic_intr_coalescing_timer_set(&enic->intr[intr], timer);
 104         }
 105 }
 106
 107 static int enic_get_ksettings(struct net_device *netdev,
 108                               struct ethtool_link_ksettings *ecmd)
 109 {
 110         struct enic *enic = netdev_priv(netdev);
 111         struct ethtool_link_settings *base = &ecmd->base;
 112
 113         ethtool_link_ksettings_add_link_mode(ecmd, supported,
 114                                              10000baseT_Full);
 115         ethtool_link_ksettings_add_link_mode(ecmd, supported, FIBRE);
 116         ethtool_link_ksettings_add_link_mode(ecmd, advertising,
 117                                              10000baseT_Full);
 118         ethtool_link_ksettings_add_link_mode(ecmd, advertising, FIBRE);
 119         base->port = PORT_FIBRE;
 120
 121         if (netif_carrier_ok(netdev)) {
 122                 base->speed = vnic_dev_port_speed(enic->vdev);
 123                 base->duplex = DUPLEX_FULL;
 124         } else {
 125                 base->speed = SPEED_UNKNOWN;
 126                 base->duplex = DUPLEX_UNKNOWN;
 127         }
 128
 129         base->autoneg = AUTONEG_DISABLE;
 130
 131         return 0;
 132 }
 133
 134 static void enic_get_drvinfo(struct net_device *netdev,
 135         struct ethtool_drvinfo *drvinfo)
 136 {
 137         struct enic *enic = netdev_priv(netdev);
 138         struct vnic_devcmd_fw_info *fw_info;
 139         int err;
 140
 141         err = enic_dev_fw_info(enic, &fw_info);
 142         /* return only when pci_zalloc_consistent fails in vnic_dev_fw_info
 143          * For other failures, like devcmd failure, we return previously
 144          * recorded info.
 145          */
 146         if (err == -ENOMEM)
 147                 return;
 148
 149         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 150         strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
 151         strlcpy(drvinfo->fw_version, fw_info->fw_version,
 152                 sizeof(drvinfo->fw_version));
 153         strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
 154                 sizeof(drvinfo->bus_info));
 155 }
 156
 157 static void enic_get_strings(struct net_device *netdev, u32 stringset,
 158         u8 *data)
 159 {
 160         unsigned int i;
 161
 162         switch (stringset) {
 163         case ETH_SS_STATS:
 164                 for (i = 0; i < enic_n_tx_stats; i++) {
 165                         memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
 166                         data += ETH_GSTRING_LEN;
 167                 }
 168                 for (i = 0; i < enic_n_rx_stats; i++) {
 169                         memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
 170                         data += ETH_GSTRING_LEN;
 171                 }
 172                 for (i = 0; i < enic_n_gen_stats; i++) {
 173                         memcpy(data, enic_gen_stats[i].name, ETH_GSTRING_LEN);
 174                         data += ETH_GSTRING_LEN;
 175                 }
 176                 break;
 177         }
 178 }
 179
 180 static void enic_get_ringparam(struct net_device *netdev,
 181                                struct ethtool_ringparam *ring)
 182 {
 183         struct enic *enic = netdev_priv(netdev);
 184         struct vnic_enet_config *c = &enic->config;
 185
 186         ring->rx_max_pending = ENIC_MAX_RQ_DESCS;
 187         ring->rx_pending = c->rq_desc_count;
 188         ring->tx_max_pending = ENIC_MAX_WQ_DESCS;
 189         ring->tx_pending = c->wq_desc_count;
 190 }
 191
 192 static int enic_set_ringparam(struct net_device *netdev,
 193                               struct ethtool_ringparam *ring)
 194 {
 195         struct enic *enic = netdev_priv(netdev);
 196         struct vnic_enet_config *c = &enic->config;
 197         int running = netif_running(netdev);
 198         unsigned int rx_pending;
 199         unsigned int tx_pending;
 200         int err = 0;
 201
 202         if (ring->rx_mini_max_pending || ring->rx_mini_pending) {
 203                 netdev_info(netdev,
 204                             "modifying mini ring params is not supported");
 205                 return -EINVAL;
 206         }
 207         if (ring->rx_jumbo_max_pending || ring->rx_jumbo_pending) {
 208                 netdev_info(netdev,
 209                             "modifying jumbo ring params is not supported");
 210                 return -EINVAL;
 211         }
 212         rx_pending = c->rq_desc_count;
 213         tx_pending = c->wq_desc_count;
 214         if (ring->rx_pending > ENIC_MAX_RQ_DESCS ||
 215             ring->rx_pending < ENIC_MIN_RQ_DESCS) {
 216                 netdev_info(netdev, "rx pending (%u) not in range [%u,%u]",
 217                             ring->rx_pending, ENIC_MIN_RQ_DESCS,
 218                             ENIC_MAX_RQ_DESCS);
 219                 return -EINVAL;
 220         }
 221         if (ring->tx_pending > ENIC_MAX_WQ_DESCS ||
 222             ring->tx_pending < ENIC_MIN_WQ_DESCS) {
 223                 netdev_info(netdev, "tx pending (%u) not in range [%u,%u]",
 224                             ring->tx_pending, ENIC_MIN_WQ_DESCS,
 225                             ENIC_MAX_WQ_DESCS);
 226                 return -EINVAL;
 227         }
 228         if (running)
 229                 dev_close(netdev);
 230         c->rq_desc_count =
 231                 ring->rx_pending & 0xffffffe0; /* must be aligned to groups of 32 */
 232         c->wq_desc_count =
 233                 ring->tx_pending & 0xffffffe0; /* must be aligned to groups of 32 */
 234         enic_free_vnic_resources(enic);
 235         err = enic_alloc_vnic_resources(enic);
 236         if (err) {
 237                 netdev_err(netdev,
 238                            "Failed to alloc vNIC resources, aborting\n");
 239                 enic_free_vnic_resources(enic);
 240                 goto err_out;
 241         }
 242         enic_init_vnic_resources(enic);
 243         if (running) {
 244                 err = dev_open(netdev);
 245                 if (err)
 246                         goto err_out;
 247         }
 248         return 0;
 249 err_out:
 250         c->rq_desc_count = rx_pending;
 251         c->wq_desc_count = tx_pending;
 252         return err;
 253 }
 254
 255 static int enic_get_sset_count(struct net_device *netdev, int sset)
 256 {
 257         switch (sset) {
 258         case ETH_SS_STATS:
 259                 return enic_n_tx_stats + enic_n_rx_stats + enic_n_gen_stats;
 260         default:
 261                 return -EOPNOTSUPP;
 262         }
 263 }
 264
 265 static void enic_get_ethtool_stats(struct net_device *netdev,
 266         struct ethtool_stats *stats, u64 *data)
 267 {
 268         struct enic *enic = netdev_priv(netdev);
 269         struct vnic_stats *vstats;
 270         unsigned int i;
 271         int err;
 272
 273         err = enic_dev_stats_dump(enic, &vstats);
 274         /* return only when pci_zalloc_consistent fails in vnic_dev_stats_dump
 275          * For other failures, like devcmd failure, we return previously
 276          * recorded stats.
 277          */
 278         if (err == -ENOMEM)
 279                 return;
 280
 281         for (i = 0; i < enic_n_tx_stats; i++)
 282                 *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].index];
 283         for (i = 0; i < enic_n_rx_stats; i++)
 284                 *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].index];
 285         for (i = 0; i < enic_n_gen_stats; i++)
 286                 *(data++) = ((u64 *)&enic->gen_stats)[enic_gen_stats[i].index];
 287 }
 288
 289 static u32 enic_get_msglevel(struct net_device *netdev)
 290 {
 291         struct enic *enic = netdev_priv(netdev);
 292         return enic->msg_enable;
 293 }
 294
 295 static void enic_set_msglevel(struct net_device *netdev, u32 value)
 296 {
 297         struct enic *enic = netdev_priv(netdev);
 298         enic->msg_enable = value;
 299 }
 300
 301 static int enic_get_coalesce(struct net_device *netdev,
 302         struct ethtool_coalesce *ecmd)
 303 {
 304         struct enic *enic = netdev_priv(netdev);
 305         struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
 306
 307         if (vnic_dev_get_intr_mode(enic->vdev) == VNIC_DEV_INTR_MODE_MSIX)
 308                 ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
 309         ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
 310         if (rxcoal->use_adaptive_rx_coalesce)
 311                 ecmd->use_adaptive_rx_coalesce = 1;
 312         ecmd->rx_coalesce_usecs_low = rxcoal->small_pkt_range_start;
 313         ecmd->rx_coalesce_usecs_high = rxcoal->range_end;
 314
 315         return 0;
 316 }
 317
 318 static int enic_coalesce_valid(struct enic *enic,
 319                                struct ethtool_coalesce *ec)
 320 {
 321         u32 coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
 322         u32 rx_coalesce_usecs_high = min_t(u32, coalesce_usecs_max,
 323                                            ec->rx_coalesce_usecs_high);
 324         u32 rx_coalesce_usecs_low = min_t(u32, coalesce_usecs_max,
 325                                           ec->rx_coalesce_usecs_low);
 326
 327         if (ec->rx_max_coalesced_frames         ||
 328             ec->rx_coalesce_usecs_irq           ||
 329             ec->rx_max_coalesced_frames_irq     ||
 330             ec->tx_max_coalesced_frames         ||
 331             ec->tx_coalesce_usecs_irq           ||
 332             ec->tx_max_coalesced_frames_irq     ||
 333             ec->stats_block_coalesce_usecs      ||
 334             ec->use_adaptive_tx_coalesce        ||
 335             ec->pkt_rate_low                    ||
 336             ec->rx_max_coalesced_frames_low     ||
 337             ec->tx_coalesce_usecs_low           ||
 338             ec->tx_max_coalesced_frames_low     ||
 339             ec->pkt_rate_high                   ||
 340             ec->rx_max_coalesced_frames_high    ||
 341             ec->tx_coalesce_usecs_high          ||
 342             ec->tx_max_coalesced_frames_high    ||
 343             ec->rate_sample_interval)
 344                 return -EINVAL;
 345
 346         if ((vnic_dev_get_intr_mode(enic->vdev) != VNIC_DEV_INTR_MODE_MSIX) &&
 347             ec->tx_coalesce_usecs)
 348                 return -EINVAL;
 349
 350         if ((ec->tx_coalesce_usecs > coalesce_usecs_max)        ||
 351             (ec->rx_coalesce_usecs > coalesce_usecs_max)        ||
 352             (ec->rx_coalesce_usecs_low > coalesce_usecs_max)    ||
 353             (ec->rx_coalesce_usecs_high > coalesce_usecs_max))
 354                 netdev_info(enic->netdev, "ethtool_set_coalesce: adaptor supports max coalesce value of %d. Setting max value.\n",
 355                             coalesce_usecs_max);
 356
 357         if (ec->rx_coalesce_usecs_high &&
 358             (rx_coalesce_usecs_high <
 359              rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF))
 360                 return -EINVAL;
 361
 362         return 0;
 363 }
 364
 365 static int enic_set_coalesce(struct net_device *netdev,
 366         struct ethtool_coalesce *ecmd)
 367 {
 368         struct enic *enic = netdev_priv(netdev);
 369         u32 tx_coalesce_usecs;
 370         u32 rx_coalesce_usecs;
 371         u32 rx_coalesce_usecs_low;
 372         u32 rx_coalesce_usecs_high;
 373         u32 coalesce_usecs_max;
 374         unsigned int i, intr;
 375         int ret;
 376         struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
 377
 378         ret = enic_coalesce_valid(enic, ecmd);
 379         if (ret)
 380                 return ret;
 381         coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
 382         tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
 383                                   coalesce_usecs_max);
 384         rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
 385                                   coalesce_usecs_max);
 386
 387         rx_coalesce_usecs_low = min_t(u32, ecmd->rx_coalesce_usecs_low,
 388                                       coalesce_usecs_max);
 389         rx_coalesce_usecs_high = min_t(u32, ecmd->rx_coalesce_usecs_high,
 390                                        coalesce_usecs_max);
 391
 392         if (vnic_dev_get_intr_mode(enic->vdev) == VNIC_DEV_INTR_MODE_MSIX) {
 393                 for (i = 0; i < enic->wq_count; i++) {
 394                         intr = enic_msix_wq_intr(enic, i);
 395                         vnic_intr_coalescing_timer_set(&enic->intr[intr],
 396                                                        tx_coalesce_usecs);
 397                 }
 398                 enic->tx_coalesce_usecs = tx_coalesce_usecs;
 399         }
 400         rxcoal->use_adaptive_rx_coalesce = !!ecmd->use_adaptive_rx_coalesce;
 401         if (!rxcoal->use_adaptive_rx_coalesce)
 402                 enic_intr_coal_set_rx(enic, rx_coalesce_usecs);
 403         if (ecmd->rx_coalesce_usecs_high) {
 404                 rxcoal->range_end = rx_coalesce_usecs_high;
 405                 rxcoal->small_pkt_range_start = rx_coalesce_usecs_low;
 406                 rxcoal->large_pkt_range_start = rx_coalesce_usecs_low +
 407                                                 ENIC_AIC_LARGE_PKT_DIFF;
 408         }
 409
 410         enic->rx_coalesce_usecs = rx_coalesce_usecs;
 411
 412         return 0;
 413 }
 414
 415 static int enic_grxclsrlall(struct enic *enic, struct ethtool_rxnfc *cmd,
 416                             u32 *rule_locs)
 417 {
 418         int j, ret = 0, cnt = 0;
 419
 420         cmd->data = enic->rfs_h.max - enic->rfs_h.free;
 421         for (j = 0; j < (1 << ENIC_RFS_FLW_BITSHIFT); j++) {
 422                 struct hlist_head *hhead;
 423                 struct hlist_node *tmp;
 424                 struct enic_rfs_fltr_node *n;
 425
 426                 hhead = &enic->rfs_h.ht_head[j];
 427                 hlist_for_each_entry_safe(n, tmp, hhead, node) {
 428                         if (cnt == cmd->rule_cnt)
 429                                 return -EMSGSIZE;
 430                         rule_locs[cnt] = n->fltr_id;
 431                         cnt++;
 432                 }
 433         }
 434         cmd->rule_cnt = cnt;
 435
 436         return ret;
 437 }
 438
 439 static int enic_grxclsrule(struct enic *enic, struct ethtool_rxnfc *cmd)
 440 {
 441         struct ethtool_rx_flow_spec *fsp =
 442                                 (struct ethtool_rx_flow_spec *)&cmd->fs;
 443         struct enic_rfs_fltr_node *n;
 444
 445         n = htbl_fltr_search(enic, (u16)fsp->location);
 446         if (!n)
 447                 return -EINVAL;
 448         switch (n->keys.basic.ip_proto) {
 449         case IPPROTO_TCP:
 450                 fsp->flow_type = TCP_V4_FLOW;
 451                 break;
 452         case IPPROTO_UDP:
 453                 fsp->flow_type = UDP_V4_FLOW;
 454                 break;
 455         default:
 456                 return -EINVAL;
 457                 break;
 458         }
 459
 460         fsp->h_u.tcp_ip4_spec.ip4src = flow_get_u32_src(&n->keys);
 461         fsp->m_u.tcp_ip4_spec.ip4src = (__u32)~0;
 462
 463         fsp->h_u.tcp_ip4_spec.ip4dst = flow_get_u32_dst(&n->keys);
 464         fsp->m_u.tcp_ip4_spec.ip4dst = (__u32)~0;
 465
 466         fsp->h_u.tcp_ip4_spec.psrc = n->keys.ports.src;
 467         fsp->m_u.tcp_ip4_spec.psrc = (__u16)~0;
 468
 469         fsp->h_u.tcp_ip4_spec.pdst = n->keys.ports.dst;
 470         fsp->m_u.tcp_ip4_spec.pdst = (__u16)~0;
 471
 472         fsp->ring_cookie = n->rq_id;
 473
 474         return 0;
 475 }
 476
 477 static int enic_get_rx_flow_hash(struct enic *enic, struct ethtool_rxnfc *cmd)
 478 {
 479         u8 rss_hash_type = 0;
 480         cmd->data = 0;
 481
 482         spin_lock_bh(&enic->devcmd_lock);
 483         (void)vnic_dev_capable_rss_hash_type(enic->vdev, &rss_hash_type);
 484         spin_unlock_bh(&enic->devcmd_lock);
 485         switch (cmd->flow_type) {
 486         case TCP_V6_FLOW:
 487         case TCP_V4_FLOW:
 488                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3 |
 489                              RXH_IP_SRC | RXH_IP_DST;
 490                 break;
 491         case UDP_V6_FLOW:
 492                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
 493                 if (rss_hash_type & NIC_CFG_RSS_HASH_TYPE_UDP_IPV6)
 494                         cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 495                 break;
 496         case UDP_V4_FLOW:
 497                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
 498                 if (rss_hash_type & NIC_CFG_RSS_HASH_TYPE_UDP_IPV4)
 499                         cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 500                 break;
 501         case SCTP_V4_FLOW:
 502         case AH_ESP_V4_FLOW:
 503         case AH_V4_FLOW:
 504         case ESP_V4_FLOW:
 505         case SCTP_V6_FLOW:
 506         case AH_ESP_V6_FLOW:
 507         case AH_V6_FLOW:
 508         case ESP_V6_FLOW:
 509         case IPV4_FLOW:
 510         case IPV6_FLOW:
 511                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
 512                 break;
 513         default:
 514                 return -EINVAL;
 515         }
 516
 517         return 0;
 518 }
 519
 520 static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 521                           u32 *rule_locs)
 522 {
 523         struct enic *enic = netdev_priv(dev);
 524         int ret = 0;
 525
 526         switch (cmd->cmd) {
 527         case ETHTOOL_GRXRINGS:
 528                 cmd->data = enic->rq_count;
 529                 break;
 530         case ETHTOOL_GRXCLSRLCNT:
 531                 spin_lock_bh(&enic->rfs_h.lock);
 532                 cmd->rule_cnt = enic->rfs_h.max - enic->rfs_h.free;
 533                 cmd->data = enic->rfs_h.max;
 534                 spin_unlock_bh(&enic->rfs_h.lock);
 535                 break;
 536         case ETHTOOL_GRXCLSRLALL:
 537                 spin_lock_bh(&enic->rfs_h.lock);
 538                 ret = enic_grxclsrlall(enic, cmd, rule_locs);
 539                 spin_unlock_bh(&enic->rfs_h.lock);
 540                 break;
 541         case ETHTOOL_GRXCLSRULE:
 542                 spin_lock_bh(&enic->rfs_h.lock);
 543                 ret = enic_grxclsrule(enic, cmd);
 544                 spin_unlock_bh(&enic->rfs_h.lock);
 545                 break;
 546         case ETHTOOL_GRXFH:
 547                 ret = enic_get_rx_flow_hash(enic, cmd);
 548                 break;
 549         default:
 550                 ret = -EOPNOTSUPP;
 551                 break;
 552         }
 553
 554         return ret;
 555 }
 556
 557 static int enic_get_tunable(struct net_device *dev,
 558                             const struct ethtool_tunable *tuna, void *data)
 559 {
 560         struct enic *enic = netdev_priv(dev);
 561         int ret = 0;
 562
 563         switch (tuna->id) {
 564         case ETHTOOL_RX_COPYBREAK:
 565                 *(u32 *)data = enic->rx_copybreak;
 566                 break;
 567         default:
 568                 ret = -EINVAL;
 569                 break;
 570         }
 571
 572         return ret;
 573 }
 574
 575 static int enic_set_tunable(struct net_device *dev,
 576                             const struct ethtool_tunable *tuna,
 577                             const void *data)
 578 {
 579         struct enic *enic = netdev_priv(dev);
 580         int ret = 0;
 581
 582         switch (tuna->id) {
 583         case ETHTOOL_RX_COPYBREAK:
 584                 enic->rx_copybreak = *(u32 *)data;
 585                 break;
 586         default:
 587                 ret = -EINVAL;
 588                 break;
 589         }
 590
 591         return ret;
 592 }
 593
 594 static u32 enic_get_rxfh_key_size(struct net_device *netdev)
 595 {
 596         return ENIC_RSS_LEN;
 597 }
 598
 599 static int enic_get_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey,
 600                          u8 *hfunc)
 601 {
 602         struct enic *enic = netdev_priv(netdev);
 603
 604         if (hkey)
 605                 memcpy(hkey, enic->rss_key, ENIC_RSS_LEN);
 606
 607         if (hfunc)
 608                 *hfunc = ETH_RSS_HASH_TOP;
 609
 610         return 0;
 611 }
 612
 613 static int enic_set_rxfh(struct net_device *netdev, const u32 *indir,
 614                          const u8 *hkey, const u8 hfunc)
 615 {
 616         struct enic *enic = netdev_priv(netdev);
 617
 618         if ((hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) ||
 619             indir)
 620                 return -EINVAL;
 621
 622         if (hkey)
 623                 memcpy(enic->rss_key, hkey, ENIC_RSS_LEN);
 624
 625         return __enic_set_rsskey(enic);
 626 }
 627
 628 static int enic_get_ts_info(struct net_device *netdev,
 629                             struct ethtool_ts_info *info)
 630 {
 631         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
 632                                 SOF_TIMESTAMPING_RX_SOFTWARE |
 633                                 SOF_TIMESTAMPING_SOFTWARE;
 634
 635         return 0;
 636 }
 637
 638 static const struct ethtool_ops enic_ethtool_ops = {
 639         .get_drvinfo = enic_get_drvinfo,
 640         .get_msglevel = enic_get_msglevel,
 641         .set_msglevel = enic_set_msglevel,
 642         .get_link = ethtool_op_get_link,
 643         .get_strings = enic_get_strings,
 644         .get_ringparam = enic_get_ringparam,
 645         .set_ringparam = enic_set_ringparam,
 646         .get_sset_count = enic_get_sset_count,
 647         .get_ethtool_stats = enic_get_ethtool_stats,
 648         .get_coalesce = enic_get_coalesce,
 649         .set_coalesce = enic_set_coalesce,
 650         .get_rxnfc = enic_get_rxnfc,
 651         .get_tunable = enic_get_tunable,
 652         .set_tunable = enic_set_tunable,
 653         .get_rxfh_key_size = enic_get_rxfh_key_size,
 654         .get_rxfh = enic_get_rxfh,
 655         .set_rxfh = enic_set_rxfh,
 656         .get_link_ksettings = enic_get_ksettings,
 657         .get_ts_info = enic_get_ts_info,
 658 };
 659
 660 void enic_set_ethtool_ops(struct net_device *netdev)
 661 {
 662         netdev->ethtool_ops = &enic_ethtool_ops;
 663 }