drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c

   1 /*
   2  * Copyright (C) 2015 Cavium, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License
   6  * as published by the Free Software Foundation.
   7  */
   8
   9 /* ETHTOOL Support for VNIC_VF Device*/
  10
  11 #include <linux/pci.h>
  12
  13 #include "nic_reg.h"
  14 #include "nic.h"
  15 #include "nicvf_queues.h"
  16 #include "q_struct.h"
  17 #include "thunder_bgx.h"
  18
  19 #define DRV_NAME        "thunder-nicvf"
  20 #define DRV_VERSION     "1.0"
  21
  22 struct nicvf_stat {
  23         char name[ETH_GSTRING_LEN];
  24         unsigned int index;
  25 };
  26
  27 #define NICVF_HW_STAT(stat) { \
  28         .name = #stat, \
  29         .index = offsetof(struct nicvf_hw_stats, stat) / sizeof(u64), \
  30 }
  31
  32 #define NICVF_DRV_STAT(stat) { \
  33         .name = #stat, \
  34         .index = offsetof(struct nicvf_drv_stats, stat) / sizeof(u64), \
  35 }
  36
  37 static const struct nicvf_stat nicvf_hw_stats[] = {
  38         NICVF_HW_STAT(rx_bytes),
  39         NICVF_HW_STAT(rx_ucast_frames),
  40         NICVF_HW_STAT(rx_bcast_frames),
  41         NICVF_HW_STAT(rx_mcast_frames),
  42         NICVF_HW_STAT(rx_fcs_errors),
  43         NICVF_HW_STAT(rx_l2_errors),
  44         NICVF_HW_STAT(rx_drop_red),
  45         NICVF_HW_STAT(rx_drop_red_bytes),
  46         NICVF_HW_STAT(rx_drop_overrun),
  47         NICVF_HW_STAT(rx_drop_overrun_bytes),
  48         NICVF_HW_STAT(rx_drop_bcast),
  49         NICVF_HW_STAT(rx_drop_mcast),
  50         NICVF_HW_STAT(rx_drop_l3_bcast),
  51         NICVF_HW_STAT(rx_drop_l3_mcast),
  52         NICVF_HW_STAT(rx_bgx_truncated_pkts),
  53         NICVF_HW_STAT(rx_jabber_errs),
  54         NICVF_HW_STAT(rx_fcs_errs),
  55         NICVF_HW_STAT(rx_bgx_errs),
  56         NICVF_HW_STAT(rx_prel2_errs),
  57         NICVF_HW_STAT(rx_l2_hdr_malformed),
  58         NICVF_HW_STAT(rx_oversize),
  59         NICVF_HW_STAT(rx_undersize),
  60         NICVF_HW_STAT(rx_l2_len_mismatch),
  61         NICVF_HW_STAT(rx_l2_pclp),
  62         NICVF_HW_STAT(rx_ip_ver_errs),
  63         NICVF_HW_STAT(rx_ip_csum_errs),
  64         NICVF_HW_STAT(rx_ip_hdr_malformed),
  65         NICVF_HW_STAT(rx_ip_payload_malformed),
  66         NICVF_HW_STAT(rx_ip_ttl_errs),
  67         NICVF_HW_STAT(rx_l3_pclp),
  68         NICVF_HW_STAT(rx_l4_malformed),
  69         NICVF_HW_STAT(rx_l4_csum_errs),
  70         NICVF_HW_STAT(rx_udp_len_errs),
  71         NICVF_HW_STAT(rx_l4_port_errs),
  72         NICVF_HW_STAT(rx_tcp_flag_errs),
  73         NICVF_HW_STAT(rx_tcp_offset_errs),
  74         NICVF_HW_STAT(rx_l4_pclp),
  75         NICVF_HW_STAT(rx_truncated_pkts),
  76         NICVF_HW_STAT(tx_bytes_ok),
  77         NICVF_HW_STAT(tx_ucast_frames_ok),
  78         NICVF_HW_STAT(tx_bcast_frames_ok),
  79         NICVF_HW_STAT(tx_mcast_frames_ok),
  80 };
  81
  82 static const struct nicvf_stat nicvf_drv_stats[] = {
  83         NICVF_DRV_STAT(rx_frames_ok),
  84         NICVF_DRV_STAT(rx_frames_64),
  85         NICVF_DRV_STAT(rx_frames_127),
  86         NICVF_DRV_STAT(rx_frames_255),
  87         NICVF_DRV_STAT(rx_frames_511),
  88         NICVF_DRV_STAT(rx_frames_1023),
  89         NICVF_DRV_STAT(rx_frames_1518),
  90         NICVF_DRV_STAT(rx_frames_jumbo),
  91         NICVF_DRV_STAT(rx_drops),
  92         NICVF_DRV_STAT(tx_frames_ok),
  93         NICVF_DRV_STAT(tx_tso),
  94         NICVF_DRV_STAT(tx_drops),
  95         NICVF_DRV_STAT(txq_stop),
  96         NICVF_DRV_STAT(txq_wake),
  97 };
  98
  99 static const struct nicvf_stat nicvf_queue_stats[] = {
 100         { "bytes", 0 },
 101         { "frames", 1 },
 102 };
 103
 104 static const unsigned int nicvf_n_hw_stats = ARRAY_SIZE(nicvf_hw_stats);
 105 static const unsigned int nicvf_n_drv_stats = ARRAY_SIZE(nicvf_drv_stats);
 106 static const unsigned int nicvf_n_queue_stats = ARRAY_SIZE(nicvf_queue_stats);
 107
 108 static int nicvf_get_settings(struct net_device *netdev,
 109                               struct ethtool_cmd *cmd)
 110 {
 111         struct nicvf *nic = netdev_priv(netdev);
 112
 113         cmd->supported = 0;
 114         cmd->transceiver = XCVR_EXTERNAL;
 115         if (nic->speed <= 1000) {
 116                 cmd->port = PORT_MII;
 117                 cmd->autoneg = AUTONEG_ENABLE;
 118         } else {
 119                 cmd->port = PORT_FIBRE;
 120                 cmd->autoneg = AUTONEG_DISABLE;
 121         }
 122         cmd->duplex = nic->duplex;
 123         ethtool_cmd_speed_set(cmd, nic->speed);
 124
 125         return 0;
 126 }
 127
 128 static void nicvf_get_drvinfo(struct net_device *netdev,
 129                               struct ethtool_drvinfo *info)
 130 {
 131         struct nicvf *nic = netdev_priv(netdev);
 132
 133         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 134         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
 135         strlcpy(info->bus_info, pci_name(nic->pdev), sizeof(info->bus_info));
 136 }
 137
 138 static u32 nicvf_get_msglevel(struct net_device *netdev)
 139 {
 140         struct nicvf *nic = netdev_priv(netdev);
 141
 142         return nic->msg_enable;
 143 }
 144
 145 static void nicvf_set_msglevel(struct net_device *netdev, u32 lvl)
 146 {
 147         struct nicvf *nic = netdev_priv(netdev);
 148
 149         nic->msg_enable = lvl;
 150 }
 151
 152 static void nicvf_get_qset_strings(struct nicvf *nic, u8 **data, int qset)
 153 {
 154         int stats, qidx;
 155         int start_qidx = qset * MAX_RCV_QUEUES_PER_QS;
 156
 157         for (qidx = 0; qidx < nic->qs->rq_cnt; qidx++) {
 158                 for (stats = 0; stats < nicvf_n_queue_stats; stats++) {
 159                         sprintf(*data, "rxq%d: %s", qidx + start_qidx,
 160                                 nicvf_queue_stats[stats].name);
 161                         *data += ETH_GSTRING_LEN;
 162                 }
 163         }
 164
 165         for (qidx = 0; qidx < nic->qs->sq_cnt; qidx++) {
 166                 for (stats = 0; stats < nicvf_n_queue_stats; stats++) {
 167                         sprintf(*data, "txq%d: %s", qidx + start_qidx,
 168                                 nicvf_queue_stats[stats].name);
 169                         *data += ETH_GSTRING_LEN;
 170                 }
 171         }
 172 }
 173
 174 static void nicvf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
 175 {
 176         struct nicvf *nic = netdev_priv(netdev);
 177         int stats;
 178         int sqs;
 179
 180         if (sset != ETH_SS_STATS)
 181                 return;
 182
 183         for (stats = 0; stats < nicvf_n_hw_stats; stats++) {
 184                 memcpy(data, nicvf_hw_stats[stats].name, ETH_GSTRING_LEN);
 185                 data += ETH_GSTRING_LEN;
 186         }
 187
 188         for (stats = 0; stats < nicvf_n_drv_stats; stats++) {
 189                 memcpy(data, nicvf_drv_stats[stats].name, ETH_GSTRING_LEN);
 190                 data += ETH_GSTRING_LEN;
 191         }
 192
 193         nicvf_get_qset_strings(nic, &data, 0);
 194
 195         for (sqs = 0; sqs < nic->sqs_count; sqs++) {
 196                 if (!nic->snicvf[sqs])
 197                         continue;
 198                 nicvf_get_qset_strings(nic->snicvf[sqs], &data, sqs + 1);
 199         }
 200
 201         for (stats = 0; stats < BGX_RX_STATS_COUNT; stats++) {
 202                 sprintf(data, "bgx_rxstat%d: ", stats);
 203                 data += ETH_GSTRING_LEN;
 204         }
 205
 206         for (stats = 0; stats < BGX_TX_STATS_COUNT; stats++) {
 207                 sprintf(data, "bgx_txstat%d: ", stats);
 208                 data += ETH_GSTRING_LEN;
 209         }
 210 }
 211
 212 static int nicvf_get_sset_count(struct net_device *netdev, int sset)
 213 {
 214         struct nicvf *nic = netdev_priv(netdev);
 215         int qstats_count;
 216         int sqs;
 217
 218         if (sset != ETH_SS_STATS)
 219                 return -EINVAL;
 220
 221         qstats_count = nicvf_n_queue_stats *
 222                        (nic->qs->rq_cnt + nic->qs->sq_cnt);
 223         for (sqs = 0; sqs < nic->sqs_count; sqs++) {
 224                 struct nicvf *snic;
 225
 226                 snic = nic->snicvf[sqs];
 227                 if (!snic)
 228                         continue;
 229                 qstats_count += nicvf_n_queue_stats *
 230                                 (snic->qs->rq_cnt + snic->qs->sq_cnt);
 231         }
 232
 233         return nicvf_n_hw_stats + nicvf_n_drv_stats +
 234                 qstats_count +
 235                 BGX_RX_STATS_COUNT + BGX_TX_STATS_COUNT;
 236 }
 237
 238 static void nicvf_get_qset_stats(struct nicvf *nic,
 239                                  struct ethtool_stats *stats, u64 **data)
 240 {
 241         int stat, qidx;
 242
 243         if (!nic)
 244                 return;
 245
 246         for (qidx = 0; qidx < nic->qs->rq_cnt; qidx++) {
 247                 nicvf_update_rq_stats(nic, qidx);
 248                 for (stat = 0; stat < nicvf_n_queue_stats; stat++)
 249                         *((*data)++) = ((u64 *)&nic->qs->rq[qidx].stats)
 250                                         [nicvf_queue_stats[stat].index];
 251         }
 252
 253         for (qidx = 0; qidx < nic->qs->sq_cnt; qidx++) {
 254                 nicvf_update_sq_stats(nic, qidx);
 255                 for (stat = 0; stat < nicvf_n_queue_stats; stat++)
 256                         *((*data)++) = ((u64 *)&nic->qs->sq[qidx].stats)
 257                                         [nicvf_queue_stats[stat].index];
 258         }
 259 }
 260
 261 static void nicvf_get_ethtool_stats(struct net_device *netdev,
 262                                     struct ethtool_stats *stats, u64 *data)
 263 {
 264         struct nicvf *nic = netdev_priv(netdev);
 265         int stat;
 266         int sqs;
 267
 268         nicvf_update_stats(nic);
 269
 270         /* Update LMAC stats */
 271         nicvf_update_lmac_stats(nic);
 272
 273         for (stat = 0; stat < nicvf_n_hw_stats; stat++)
 274                 *(data++) = ((u64 *)&nic->hw_stats)
 275                                 [nicvf_hw_stats[stat].index];
 276         for (stat = 0; stat < nicvf_n_drv_stats; stat++)
 277                 *(data++) = ((u64 *)&nic->drv_stats)
 278                                 [nicvf_drv_stats[stat].index];
 279
 280         nicvf_get_qset_stats(nic, stats, &data);
 281
 282         for (sqs = 0; sqs < nic->sqs_count; sqs++) {
 283                 if (!nic->snicvf[sqs])
 284                         continue;
 285                 nicvf_get_qset_stats(nic->snicvf[sqs], stats, &data);
 286         }
 287
 288         for (stat = 0; stat < BGX_RX_STATS_COUNT; stat++)
 289                 *(data++) = nic->bgx_stats.rx_stats[stat];
 290         for (stat = 0; stat < BGX_TX_STATS_COUNT; stat++)
 291                 *(data++) = nic->bgx_stats.tx_stats[stat];
 292 }
 293
 294 static int nicvf_get_regs_len(struct net_device *dev)
 295 {
 296         return sizeof(u64) * NIC_VF_REG_COUNT;
 297 }
 298
 299 static void nicvf_get_regs(struct net_device *dev,
 300                            struct ethtool_regs *regs, void *reg)
 301 {
 302         struct nicvf *nic = netdev_priv(dev);
 303         u64 *p = (u64 *)reg;
 304         u64 reg_offset;
 305         int mbox, key, stat, q;
 306         int i = 0;
 307
 308         regs->version = 0;
 309         memset(p, 0, NIC_VF_REG_COUNT);
 310
 311         p[i++] = nicvf_reg_read(nic, NIC_VNIC_CFG);
 312         /* Mailbox registers */
 313         for (mbox = 0; mbox < NIC_PF_VF_MAILBOX_SIZE; mbox++)
 314                 p[i++] = nicvf_reg_read(nic,
 315                                         NIC_VF_PF_MAILBOX_0_1 | (mbox << 3));
 316
 317         p[i++] = nicvf_reg_read(nic, NIC_VF_INT);
 318         p[i++] = nicvf_reg_read(nic, NIC_VF_INT_W1S);
 319         p[i++] = nicvf_reg_read(nic, NIC_VF_ENA_W1C);
 320         p[i++] = nicvf_reg_read(nic, NIC_VF_ENA_W1S);
 321         p[i++] = nicvf_reg_read(nic, NIC_VNIC_RSS_CFG);
 322
 323         for (key = 0; key < RSS_HASH_KEY_SIZE; key++)
 324                 p[i++] = nicvf_reg_read(nic, NIC_VNIC_RSS_KEY_0_4 | (key << 3));
 325
 326         /* Tx/Rx statistics */
 327         for (stat = 0; stat < TX_STATS_ENUM_LAST; stat++)
 328                 p[i++] = nicvf_reg_read(nic,
 329                                         NIC_VNIC_TX_STAT_0_4 | (stat << 3));
 330
 331         for (i = 0; i < RX_STATS_ENUM_LAST; i++)
 332                 p[i++] = nicvf_reg_read(nic,
 333                                         NIC_VNIC_RX_STAT_0_13 | (stat << 3));
 334
 335         p[i++] = nicvf_reg_read(nic, NIC_QSET_RQ_GEN_CFG);
 336
 337         /* All completion queue's registers */
 338         for (q = 0; q < MAX_CMP_QUEUES_PER_QS; q++) {
 339                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_CFG, q);
 340                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_CFG2, q);
 341                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_THRESH, q);
 342                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_BASE, q);
 343                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_HEAD, q);
 344                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_TAIL, q);
 345                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_DOOR, q);
 346                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS, q);
 347                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS2, q);
 348                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_DEBUG, q);
 349         }
 350
 351         /* All receive queue's registers */
 352         for (q = 0; q < MAX_RCV_QUEUES_PER_QS; q++) {
 353                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RQ_0_7_CFG, q);
 354                 p[i++] = nicvf_queue_reg_read(nic,
 355                                                   NIC_QSET_RQ_0_7_STAT_0_1, q);
 356                 reg_offset = NIC_QSET_RQ_0_7_STAT_0_1 | (1 << 3);
 357                 p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
 358         }
 359
 360         for (q = 0; q < MAX_SND_QUEUES_PER_QS; q++) {
 361                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CFG, q);
 362                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_THRESH, q);
 363                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_BASE, q);
 364                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_HEAD, q);
 365                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_TAIL, q);
 366                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_DOOR, q);
 367                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_STATUS, q);
 368                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_DEBUG, q);
 369                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CNM_CHG, q);
 370                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_STAT_0_1, q);
 371                 reg_offset = NIC_QSET_SQ_0_7_STAT_0_1 | (1 << 3);
 372                 p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
 373         }
 374
 375         for (q = 0; q < MAX_RCV_BUF_DESC_RINGS_PER_QS; q++) {
 376                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_CFG, q);
 377                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_THRESH, q);
 378                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_BASE, q);
 379                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_HEAD, q);
 380                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_TAIL, q);
 381                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_DOOR, q);
 382                 p[i++] = nicvf_queue_reg_read(nic,
 383                                               NIC_QSET_RBDR_0_1_STATUS0, q);
 384                 p[i++] = nicvf_queue_reg_read(nic,
 385                                               NIC_QSET_RBDR_0_1_STATUS1, q);
 386                 reg_offset = NIC_QSET_RBDR_0_1_PREFETCH_STATUS;
 387                 p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
 388         }
 389 }
 390
 391 static int nicvf_get_coalesce(struct net_device *netdev,
 392                               struct ethtool_coalesce *cmd)
 393 {
 394         struct nicvf *nic = netdev_priv(netdev);
 395
 396         cmd->rx_coalesce_usecs = nic->cq_coalesce_usecs;
 397         return 0;
 398 }
 399
 400 static void nicvf_get_ringparam(struct net_device *netdev,
 401                                 struct ethtool_ringparam *ring)
 402 {
 403         struct nicvf *nic = netdev_priv(netdev);
 404         struct queue_set *qs = nic->qs;
 405
 406         ring->rx_max_pending = MAX_RCV_BUF_COUNT;
 407         ring->rx_pending = qs->rbdr_len;
 408         ring->tx_max_pending = MAX_SND_QUEUE_LEN;
 409         ring->tx_pending = qs->sq_len;
 410 }
 411
 412 static int nicvf_get_rss_hash_opts(struct nicvf *nic,
 413                                    struct ethtool_rxnfc *info)
 414 {
 415         info->data = 0;
 416
 417         switch (info->flow_type) {
 418         case TCP_V4_FLOW:
 419         case TCP_V6_FLOW:
 420         case UDP_V4_FLOW:
 421         case UDP_V6_FLOW:
 422         case SCTP_V4_FLOW:
 423         case SCTP_V6_FLOW:
 424                 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 425         case IPV4_FLOW:
 426         case IPV6_FLOW:
 427                 info->data |= RXH_IP_SRC | RXH_IP_DST;
 428                 break;
 429         default:
 430                 return -EINVAL;
 431         }
 432
 433         return 0;
 434 }
 435
 436 static int nicvf_get_rxnfc(struct net_device *dev,
 437                            struct ethtool_rxnfc *info, u32 *rules)
 438 {
 439         struct nicvf *nic = netdev_priv(dev);
 440         int ret = -EOPNOTSUPP;
 441
 442         switch (info->cmd) {
 443         case ETHTOOL_GRXRINGS:
 444                 info->data = nic->rx_queues;
 445                 ret = 0;
 446                 break;
 447         case ETHTOOL_GRXFH:
 448                 return nicvf_get_rss_hash_opts(nic, info);
 449         default:
 450                 break;
 451         }
 452         return ret;
 453 }
 454
 455 static int nicvf_set_rss_hash_opts(struct nicvf *nic,
 456                                    struct ethtool_rxnfc *info)
 457 {
 458         struct nicvf_rss_info *rss = &nic->rss_info;
 459         u64 rss_cfg = nicvf_reg_read(nic, NIC_VNIC_RSS_CFG);
 460
 461         if (!rss->enable)
 462                 netdev_err(nic->netdev,
 463                            "RSS is disabled, hash cannot be set\n");
 464
 465         netdev_info(nic->netdev, "Set RSS flow type = %d, data = %lld\n",
 466                     info->flow_type, info->data);
 467
 468         if (!(info->data & RXH_IP_SRC) || !(info->data & RXH_IP_DST))
 469                 return -EINVAL;
 470
 471         switch (info->flow_type) {
 472         case TCP_V4_FLOW:
 473         case TCP_V6_FLOW:
 474                 switch (info->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 475                 case 0:
 476                         rss_cfg &= ~(1ULL << RSS_HASH_TCP);
 477                         break;
 478                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 479                         rss_cfg |= (1ULL << RSS_HASH_TCP);
 480                         break;
 481                 default:
 482                         return -EINVAL;
 483                 }
 484                 break;
 485         case UDP_V4_FLOW:
 486         case UDP_V6_FLOW:
 487                 switch (info->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 488                 case 0:
 489                         rss_cfg &= ~(1ULL << RSS_HASH_UDP);
 490                         break;
 491                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 492                         rss_cfg |= (1ULL << RSS_HASH_UDP);
 493                         break;
 494                 default:
 495                         return -EINVAL;
 496                 }
 497                 break;
 498         case SCTP_V4_FLOW:
 499         case SCTP_V6_FLOW:
 500                 switch (info->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 501                 case 0:
 502                         rss_cfg &= ~(1ULL << RSS_HASH_L4ETC);
 503                         break;
 504                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 505                         rss_cfg |= (1ULL << RSS_HASH_L4ETC);
 506                         break;
 507                 default:
 508                         return -EINVAL;
 509                 }
 510                 break;
 511         case IPV4_FLOW:
 512         case IPV6_FLOW:
 513                 rss_cfg = RSS_HASH_IP;
 514                 break;
 515         default:
 516                 return -EINVAL;
 517         }
 518
 519         nicvf_reg_write(nic, NIC_VNIC_RSS_CFG, rss_cfg);
 520         return 0;
 521 }
 522
 523 static int nicvf_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info)
 524 {
 525         struct nicvf *nic = netdev_priv(dev);
 526
 527         switch (info->cmd) {
 528         case ETHTOOL_SRXFH:
 529                 return nicvf_set_rss_hash_opts(nic, info);
 530         default:
 531                 break;
 532         }
 533         return -EOPNOTSUPP;
 534 }
 535
 536 static u32 nicvf_get_rxfh_key_size(struct net_device *netdev)
 537 {
 538         return RSS_HASH_KEY_SIZE * sizeof(u64);
 539 }
 540
 541 static u32 nicvf_get_rxfh_indir_size(struct net_device *dev)
 542 {
 543         struct nicvf *nic = netdev_priv(dev);
 544
 545         return nic->rss_info.rss_size;
 546 }
 547
 548 static int nicvf_get_rxfh(struct net_device *dev, u32 *indir, u8 *hkey,
 549                           u8 *hfunc)
 550 {
 551         struct nicvf *nic = netdev_priv(dev);
 552         struct nicvf_rss_info *rss = &nic->rss_info;
 553         int idx;
 554
 555         if (indir) {
 556                 for (idx = 0; idx < rss->rss_size; idx++)
 557                         indir[idx] = rss->ind_tbl[idx];
 558         }
 559
 560         if (hkey)
 561                 memcpy(hkey, rss->key, RSS_HASH_KEY_SIZE * sizeof(u64));
 562
 563         if (hfunc)
 564                 *hfunc = ETH_RSS_HASH_TOP;
 565
 566         return 0;
 567 }
 568
 569 static int nicvf_set_rxfh(struct net_device *dev, const u32 *indir,
 570                           const u8 *hkey, u8 hfunc)
 571 {
 572         struct nicvf *nic = netdev_priv(dev);
 573         struct nicvf_rss_info *rss = &nic->rss_info;
 574         int idx;
 575
 576         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
 577                 return -EOPNOTSUPP;
 578
 579         if (!rss->enable) {
 580                 netdev_err(nic->netdev,
 581                            "RSS is disabled, cannot change settings\n");
 582                 return -EIO;
 583         }
 584
 585         if (indir) {
 586                 for (idx = 0; idx < rss->rss_size; idx++)
 587                         rss->ind_tbl[idx] = indir[idx];
 588         }
 589
 590         if (hkey) {
 591                 memcpy(rss->key, hkey, RSS_HASH_KEY_SIZE * sizeof(u64));
 592                 nicvf_set_rss_key(nic);
 593         }
 594
 595         nicvf_config_rss(nic);
 596         return 0;
 597 }
 598
 599 /* Get no of queues device supports and current queue count */
 600 static void nicvf_get_channels(struct net_device *dev,
 601                                struct ethtool_channels *channel)
 602 {
 603         struct nicvf *nic = netdev_priv(dev);
 604
 605         memset(channel, 0, sizeof(*channel));
 606
 607         channel->max_rx = nic->max_queues;
 608         channel->max_tx = nic->max_queues;
 609
 610         channel->rx_count = nic->rx_queues;
 611         channel->tx_count = nic->tx_queues;
 612 }
 613
 614 /* Set no of Tx, Rx queues to be used */
 615 static int nicvf_set_channels(struct net_device *dev,
 616                               struct ethtool_channels *channel)
 617 {
 618         struct nicvf *nic = netdev_priv(dev);
 619         int err = 0;
 620         bool if_up = netif_running(dev);
 621         int cqcount;
 622
 623         if (!channel->rx_count || !channel->tx_count)
 624                 return -EINVAL;
 625         if (channel->rx_count > nic->max_queues)
 626                 return -EINVAL;
 627         if (channel->tx_count > nic->max_queues)
 628                 return -EINVAL;
 629
 630         if (if_up)
 631                 nicvf_stop(dev);
 632
 633         cqcount = max(channel->rx_count, channel->tx_count);
 634
 635         if (cqcount > MAX_CMP_QUEUES_PER_QS) {
 636                 nic->sqs_count = roundup(cqcount, MAX_CMP_QUEUES_PER_QS);
 637                 nic->sqs_count = (nic->sqs_count / MAX_CMP_QUEUES_PER_QS) - 1;
 638         } else {
 639                 nic->sqs_count = 0;
 640         }
 641
 642         nic->qs->rq_cnt = min_t(u32, channel->rx_count, MAX_RCV_QUEUES_PER_QS);
 643         nic->qs->sq_cnt = min_t(u32, channel->tx_count, MAX_SND_QUEUES_PER_QS);
 644         nic->qs->cq_cnt = max(nic->qs->rq_cnt, nic->qs->sq_cnt);
 645
 646         nic->rx_queues = channel->rx_count;
 647         nic->tx_queues = channel->tx_count;
 648         err = nicvf_set_real_num_queues(dev, nic->tx_queues, nic->rx_queues);
 649         if (err)
 650                 return err;
 651
 652         if (if_up)
 653                 nicvf_open(dev);
 654
 655         netdev_info(dev, "Setting num Tx rings to %d, Rx rings to %d success\n",
 656                     nic->tx_queues, nic->rx_queues);
 657
 658         return err;
 659 }
 660
 661 static const struct ethtool_ops nicvf_ethtool_ops = {
 662         .get_settings           = nicvf_get_settings,
 663         .get_link               = ethtool_op_get_link,
 664         .get_drvinfo            = nicvf_get_drvinfo,
 665         .get_msglevel           = nicvf_get_msglevel,
 666         .set_msglevel           = nicvf_set_msglevel,
 667         .get_strings            = nicvf_get_strings,
 668         .get_sset_count         = nicvf_get_sset_count,
 669         .get_ethtool_stats      = nicvf_get_ethtool_stats,
 670         .get_regs_len           = nicvf_get_regs_len,
 671         .get_regs               = nicvf_get_regs,
 672         .get_coalesce           = nicvf_get_coalesce,
 673         .get_ringparam          = nicvf_get_ringparam,
 674         .get_rxnfc              = nicvf_get_rxnfc,
 675         .set_rxnfc              = nicvf_set_rxnfc,
 676         .get_rxfh_key_size      = nicvf_get_rxfh_key_size,
 677         .get_rxfh_indir_size    = nicvf_get_rxfh_indir_size,
 678         .get_rxfh               = nicvf_get_rxfh,
 679         .set_rxfh               = nicvf_set_rxfh,
 680         .get_channels           = nicvf_get_channels,
 681         .set_channels           = nicvf_set_channels,
 682         .get_ts_info            = ethtool_op_get_ts_info,
 683 };
 684
 685 void nicvf_set_ethtool_ops(struct net_device *netdev)
 686 {
 687         netdev->ethtool_ops = &nicvf_ethtool_ops;
 688 }