kernel/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
 116         if (!nic->link_up) {
 117                 cmd->duplex = DUPLEX_UNKNOWN;
 118                 ethtool_cmd_speed_set(cmd, SPEED_UNKNOWN);
 119                 return 0;
 120         }
 121
 122         if (nic->speed <= 1000) {
 123                 cmd->port = PORT_MII;
 124                 cmd->autoneg = AUTONEG_ENABLE;
 125         } else {
 126                 cmd->port = PORT_FIBRE;
 127                 cmd->autoneg = AUTONEG_DISABLE;
 128         }
 129         cmd->duplex = nic->duplex;
 130         ethtool_cmd_speed_set(cmd, nic->speed);
 131
 132         return 0;
 133 }
 134
 135 static u32 nicvf_get_link(struct net_device *netdev)
 136 {
 137         struct nicvf *nic = netdev_priv(netdev);
 138
 139         return nic->link_up;
 140 }
 141
 142 static void nicvf_get_drvinfo(struct net_device *netdev,
 143                               struct ethtool_drvinfo *info)
 144 {
 145         struct nicvf *nic = netdev_priv(netdev);
 146
 147         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 148         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
 149         strlcpy(info->bus_info, pci_name(nic->pdev), sizeof(info->bus_info));
 150 }
 151
 152 static u32 nicvf_get_msglevel(struct net_device *netdev)
 153 {
 154         struct nicvf *nic = netdev_priv(netdev);
 155
 156         return nic->msg_enable;
 157 }
 158
 159 static void nicvf_set_msglevel(struct net_device *netdev, u32 lvl)
 160 {
 161         struct nicvf *nic = netdev_priv(netdev);
 162
 163         nic->msg_enable = lvl;
 164 }
 165
 166 static void nicvf_get_qset_strings(struct nicvf *nic, u8 **data, int qset)
 167 {
 168         int stats, qidx;
 169         int start_qidx = qset * MAX_RCV_QUEUES_PER_QS;
 170
 171         for (qidx = 0; qidx < nic->qs->rq_cnt; qidx++) {
 172                 for (stats = 0; stats < nicvf_n_queue_stats; stats++) {
 173                         sprintf(*data, "rxq%d: %s", qidx + start_qidx,
 174                                 nicvf_queue_stats[stats].name);
 175                         *data += ETH_GSTRING_LEN;
 176                 }
 177         }
 178
 179         for (qidx = 0; qidx < nic->qs->sq_cnt; qidx++) {
 180                 for (stats = 0; stats < nicvf_n_queue_stats; stats++) {
 181                         sprintf(*data, "txq%d: %s", qidx + start_qidx,
 182                                 nicvf_queue_stats[stats].name);
 183                         *data += ETH_GSTRING_LEN;
 184                 }
 185         }
 186 }
 187
 188 static void nicvf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
 189 {
 190         struct nicvf *nic = netdev_priv(netdev);
 191         int stats;
 192         int sqs;
 193
 194         if (sset != ETH_SS_STATS)
 195                 return;
 196
 197         for (stats = 0; stats < nicvf_n_hw_stats; stats++) {
 198                 memcpy(data, nicvf_hw_stats[stats].name, ETH_GSTRING_LEN);
 199                 data += ETH_GSTRING_LEN;
 200         }
 201
 202         for (stats = 0; stats < nicvf_n_drv_stats; stats++) {
 203                 memcpy(data, nicvf_drv_stats[stats].name, ETH_GSTRING_LEN);
 204                 data += ETH_GSTRING_LEN;
 205         }
 206
 207         nicvf_get_qset_strings(nic, &data, 0);
 208
 209         for (sqs = 0; sqs < nic->sqs_count; sqs++) {
 210                 if (!nic->snicvf[sqs])
 211                         continue;
 212                 nicvf_get_qset_strings(nic->snicvf[sqs], &data, sqs + 1);
 213         }
 214
 215         for (stats = 0; stats < BGX_RX_STATS_COUNT; stats++) {
 216                 sprintf(data, "bgx_rxstat%d: ", stats);
 217                 data += ETH_GSTRING_LEN;
 218         }
 219
 220         for (stats = 0; stats < BGX_TX_STATS_COUNT; stats++) {
 221                 sprintf(data, "bgx_txstat%d: ", stats);
 222                 data += ETH_GSTRING_LEN;
 223         }
 224 }
 225
 226 static int nicvf_get_sset_count(struct net_device *netdev, int sset)
 227 {
 228         struct nicvf *nic = netdev_priv(netdev);
 229         int qstats_count;
 230         int sqs;
 231
 232         if (sset != ETH_SS_STATS)
 233                 return -EINVAL;
 234
 235         qstats_count = nicvf_n_queue_stats *
 236                        (nic->qs->rq_cnt + nic->qs->sq_cnt);
 237         for (sqs = 0; sqs < nic->sqs_count; sqs++) {
 238                 struct nicvf *snic;
 239
 240                 snic = nic->snicvf[sqs];
 241                 if (!snic)
 242                         continue;
 243                 qstats_count += nicvf_n_queue_stats *
 244                                 (snic->qs->rq_cnt + snic->qs->sq_cnt);
 245         }
 246
 247         return nicvf_n_hw_stats + nicvf_n_drv_stats +
 248                 qstats_count +
 249                 BGX_RX_STATS_COUNT + BGX_TX_STATS_COUNT;
 250 }
 251
 252 static void nicvf_get_qset_stats(struct nicvf *nic,
 253                                  struct ethtool_stats *stats, u64 **data)
 254 {
 255         int stat, qidx;
 256
 257         if (!nic)
 258                 return;
 259
 260         for (qidx = 0; qidx < nic->qs->rq_cnt; qidx++) {
 261                 nicvf_update_rq_stats(nic, qidx);
 262                 for (stat = 0; stat < nicvf_n_queue_stats; stat++)
 263                         *((*data)++) = ((u64 *)&nic->qs->rq[qidx].stats)
 264                                         [nicvf_queue_stats[stat].index];
 265         }
 266
 267         for (qidx = 0; qidx < nic->qs->sq_cnt; qidx++) {
 268                 nicvf_update_sq_stats(nic, qidx);
 269                 for (stat = 0; stat < nicvf_n_queue_stats; stat++)
 270                         *((*data)++) = ((u64 *)&nic->qs->sq[qidx].stats)
 271                                         [nicvf_queue_stats[stat].index];
 272         }
 273 }
 274
 275 static void nicvf_get_ethtool_stats(struct net_device *netdev,
 276                                     struct ethtool_stats *stats, u64 *data)
 277 {
 278         struct nicvf *nic = netdev_priv(netdev);
 279         int stat;
 280         int sqs;
 281
 282         nicvf_update_stats(nic);
 283
 284         /* Update LMAC stats */
 285         nicvf_update_lmac_stats(nic);
 286
 287         for (stat = 0; stat < nicvf_n_hw_stats; stat++)
 288                 *(data++) = ((u64 *)&nic->hw_stats)
 289                                 [nicvf_hw_stats[stat].index];
 290         for (stat = 0; stat < nicvf_n_drv_stats; stat++)
 291                 *(data++) = ((u64 *)&nic->drv_stats)
 292                                 [nicvf_drv_stats[stat].index];
 293
 294         nicvf_get_qset_stats(nic, stats, &data);
 295
 296         for (sqs = 0; sqs < nic->sqs_count; sqs++) {
 297                 if (!nic->snicvf[sqs])
 298                         continue;
 299                 nicvf_get_qset_stats(nic->snicvf[sqs], stats, &data);
 300         }
 301
 302         for (stat = 0; stat < BGX_RX_STATS_COUNT; stat++)
 303                 *(data++) = nic->bgx_stats.rx_stats[stat];
 304         for (stat = 0; stat < BGX_TX_STATS_COUNT; stat++)
 305                 *(data++) = nic->bgx_stats.tx_stats[stat];
 306 }
 307
 308 static int nicvf_get_regs_len(struct net_device *dev)
 309 {
 310         return sizeof(u64) * NIC_VF_REG_COUNT;
 311 }
 312
 313 static void nicvf_get_regs(struct net_device *dev,
 314                            struct ethtool_regs *regs, void *reg)
 315 {
 316         struct nicvf *nic = netdev_priv(dev);
 317         u64 *p = (u64 *)reg;
 318         u64 reg_offset;
 319         int mbox, key, stat, q;
 320         int i = 0;
 321
 322         regs->version = 0;
 323         memset(p, 0, NIC_VF_REG_COUNT);
 324
 325         p[i++] = nicvf_reg_read(nic, NIC_VNIC_CFG);
 326         /* Mailbox registers */
 327         for (mbox = 0; mbox < NIC_PF_VF_MAILBOX_SIZE; mbox++)
 328                 p[i++] = nicvf_reg_read(nic,
 329                                         NIC_VF_PF_MAILBOX_0_1 | (mbox << 3));
 330
 331         p[i++] = nicvf_reg_read(nic, NIC_VF_INT);
 332         p[i++] = nicvf_reg_read(nic, NIC_VF_INT_W1S);
 333         p[i++] = nicvf_reg_read(nic, NIC_VF_ENA_W1C);
 334         p[i++] = nicvf_reg_read(nic, NIC_VF_ENA_W1S);
 335         p[i++] = nicvf_reg_read(nic, NIC_VNIC_RSS_CFG);
 336
 337         for (key = 0; key < RSS_HASH_KEY_SIZE; key++)
 338                 p[i++] = nicvf_reg_read(nic, NIC_VNIC_RSS_KEY_0_4 | (key << 3));
 339
 340         /* Tx/Rx statistics */
 341         for (stat = 0; stat < TX_STATS_ENUM_LAST; stat++)
 342                 p[i++] = nicvf_reg_read(nic,
 343                                         NIC_VNIC_TX_STAT_0_4 | (stat << 3));
 344
 345         for (i = 0; i < RX_STATS_ENUM_LAST; i++)
 346                 p[i++] = nicvf_reg_read(nic,
 347                                         NIC_VNIC_RX_STAT_0_13 | (stat << 3));
 348
 349         p[i++] = nicvf_reg_read(nic, NIC_QSET_RQ_GEN_CFG);
 350
 351         /* All completion queue's registers */
 352         for (q = 0; q < MAX_CMP_QUEUES_PER_QS; q++) {
 353                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_CFG, q);
 354                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_CFG2, q);
 355                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_THRESH, q);
 356                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_BASE, q);
 357                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_HEAD, q);
 358                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_TAIL, q);
 359                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_DOOR, q);
 360                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS, q);
 361                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS2, q);
 362                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_DEBUG, q);
 363         }
 364
 365         /* All receive queue's registers */
 366         for (q = 0; q < MAX_RCV_QUEUES_PER_QS; q++) {
 367                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RQ_0_7_CFG, q);
 368                 p[i++] = nicvf_queue_reg_read(nic,
 369                                                   NIC_QSET_RQ_0_7_STAT_0_1, q);
 370                 reg_offset = NIC_QSET_RQ_0_7_STAT_0_1 | (1 << 3);
 371                 p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
 372         }
 373
 374         for (q = 0; q < MAX_SND_QUEUES_PER_QS; q++) {
 375                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CFG, q);
 376                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_THRESH, q);
 377                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_BASE, q);
 378                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_HEAD, q);
 379                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_TAIL, q);
 380                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_DOOR, q);
 381                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_STATUS, q);
 382                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_DEBUG, q);
 383                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CNM_CHG, q);
 384                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_STAT_0_1, q);
 385                 reg_offset = NIC_QSET_SQ_0_7_STAT_0_1 | (1 << 3);
 386                 p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
 387         }
 388
 389         for (q = 0; q < MAX_RCV_BUF_DESC_RINGS_PER_QS; q++) {
 390                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_CFG, q);
 391                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_THRESH, q);
 392                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_BASE, q);
 393                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_HEAD, q);
 394                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_TAIL, q);
 395                 p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_DOOR, q);
 396                 p[i++] = nicvf_queue_reg_read(nic,
 397                                               NIC_QSET_RBDR_0_1_STATUS0, q);
 398                 p[i++] = nicvf_queue_reg_read(nic,
 399                                               NIC_QSET_RBDR_0_1_STATUS1, q);
 400                 reg_offset = NIC_QSET_RBDR_0_1_PREFETCH_STATUS;
 401                 p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
 402         }
 403 }
 404
 405 static int nicvf_get_coalesce(struct net_device *netdev,
 406                               struct ethtool_coalesce *cmd)
 407 {
 408         struct nicvf *nic = netdev_priv(netdev);
 409
 410         cmd->rx_coalesce_usecs = nic->cq_coalesce_usecs;
 411         return 0;
 412 }
 413
 414 static void nicvf_get_ringparam(struct net_device *netdev,
 415                                 struct ethtool_ringparam *ring)
 416 {
 417         struct nicvf *nic = netdev_priv(netdev);
 418         struct queue_set *qs = nic->qs;
 419
 420         ring->rx_max_pending = MAX_RCV_BUF_COUNT;
 421         ring->rx_pending = qs->rbdr_len;
 422         ring->tx_max_pending = MAX_SND_QUEUE_LEN;
 423         ring->tx_pending = qs->sq_len;
 424 }
 425
 426 static int nicvf_get_rss_hash_opts(struct nicvf *nic,
 427                                    struct ethtool_rxnfc *info)
 428 {
 429         info->data = 0;
 430
 431         switch (info->flow_type) {
 432         case TCP_V4_FLOW:
 433         case TCP_V6_FLOW:
 434         case UDP_V4_FLOW:
 435         case UDP_V6_FLOW:
 436         case SCTP_V4_FLOW:
 437         case SCTP_V6_FLOW:
 438                 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 439         case IPV4_FLOW:
 440         case IPV6_FLOW:
 441                 info->data |= RXH_IP_SRC | RXH_IP_DST;
 442                 break;
 443         default:
 444                 return -EINVAL;
 445         }
 446
 447         return 0;
 448 }
 449
 450 static int nicvf_get_rxnfc(struct net_device *dev,
 451                            struct ethtool_rxnfc *info, u32 *rules)
 452 {
 453         struct nicvf *nic = netdev_priv(dev);
 454         int ret = -EOPNOTSUPP;
 455
 456         switch (info->cmd) {
 457         case ETHTOOL_GRXRINGS:
 458                 info->data = nic->rx_queues;
 459                 ret = 0;
 460                 break;
 461         case ETHTOOL_GRXFH:
 462                 return nicvf_get_rss_hash_opts(nic, info);
 463         default:
 464                 break;
 465         }
 466         return ret;
 467 }
 468
 469 static int nicvf_set_rss_hash_opts(struct nicvf *nic,
 470                                    struct ethtool_rxnfc *info)
 471 {
 472         struct nicvf_rss_info *rss = &nic->rss_info;
 473         u64 rss_cfg = nicvf_reg_read(nic, NIC_VNIC_RSS_CFG);
 474
 475         if (!rss->enable)
 476                 netdev_err(nic->netdev,
 477                            "RSS is disabled, hash cannot be set\n");
 478
 479         netdev_info(nic->netdev, "Set RSS flow type = %d, data = %lld\n",
 480                     info->flow_type, info->data);
 481
 482         if (!(info->data & RXH_IP_SRC) || !(info->data & RXH_IP_DST))
 483                 return -EINVAL;
 484
 485         switch (info->flow_type) {
 486         case TCP_V4_FLOW:
 487         case TCP_V6_FLOW:
 488                 switch (info->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 489                 case 0:
 490                         rss_cfg &= ~(1ULL << RSS_HASH_TCP);
 491                         break;
 492                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 493                         rss_cfg |= (1ULL << RSS_HASH_TCP);
 494                         break;
 495                 default:
 496                         return -EINVAL;
 497                 }
 498                 break;
 499         case UDP_V4_FLOW:
 500         case UDP_V6_FLOW:
 501                 switch (info->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 502                 case 0:
 503                         rss_cfg &= ~(1ULL << RSS_HASH_UDP);
 504                         break;
 505                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 506                         rss_cfg |= (1ULL << RSS_HASH_UDP);
 507                         break;
 508                 default:
 509                         return -EINVAL;
 510                 }
 511                 break;
 512         case SCTP_V4_FLOW:
 513         case SCTP_V6_FLOW:
 514                 switch (info->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 515                 case 0:
 516                         rss_cfg &= ~(1ULL << RSS_HASH_L4ETC);
 517                         break;
 518                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 519                         rss_cfg |= (1ULL << RSS_HASH_L4ETC);
 520                         break;
 521                 default:
 522                         return -EINVAL;
 523                 }
 524                 break;
 525         case IPV4_FLOW:
 526         case IPV6_FLOW:
 527                 rss_cfg = RSS_HASH_IP;
 528                 break;
 529         default:
 530                 return -EINVAL;
 531         }
 532
 533         nicvf_reg_write(nic, NIC_VNIC_RSS_CFG, rss_cfg);
 534         return 0;
 535 }
 536
 537 static int nicvf_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info)
 538 {
 539         struct nicvf *nic = netdev_priv(dev);
 540
 541         switch (info->cmd) {
 542         case ETHTOOL_SRXFH:
 543                 return nicvf_set_rss_hash_opts(nic, info);
 544         default:
 545                 break;
 546         }
 547         return -EOPNOTSUPP;
 548 }
 549
 550 static u32 nicvf_get_rxfh_key_size(struct net_device *netdev)
 551 {
 552         return RSS_HASH_KEY_SIZE * sizeof(u64);
 553 }
 554
 555 static u32 nicvf_get_rxfh_indir_size(struct net_device *dev)
 556 {
 557         struct nicvf *nic = netdev_priv(dev);
 558
 559         return nic->rss_info.rss_size;
 560 }
 561
 562 static int nicvf_get_rxfh(struct net_device *dev, u32 *indir, u8 *hkey,
 563                           u8 *hfunc)
 564 {
 565         struct nicvf *nic = netdev_priv(dev);
 566         struct nicvf_rss_info *rss = &nic->rss_info;
 567         int idx;
 568
 569         if (indir) {
 570                 for (idx = 0; idx < rss->rss_size; idx++)
 571                         indir[idx] = rss->ind_tbl[idx];
 572         }
 573
 574         if (hkey)
 575                 memcpy(hkey, rss->key, RSS_HASH_KEY_SIZE * sizeof(u64));
 576
 577         if (hfunc)
 578                 *hfunc = ETH_RSS_HASH_TOP;
 579
 580         return 0;
 581 }
 582
 583 static int nicvf_set_rxfh(struct net_device *dev, const u32 *indir,
 584                           const u8 *hkey, u8 hfunc)
 585 {
 586         struct nicvf *nic = netdev_priv(dev);
 587         struct nicvf_rss_info *rss = &nic->rss_info;
 588         int idx;
 589
 590         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
 591                 return -EOPNOTSUPP;
 592
 593         if (!rss->enable) {
 594                 netdev_err(nic->netdev,
 595                            "RSS is disabled, cannot change settings\n");
 596                 return -EIO;
 597         }
 598
 599         if (indir) {
 600                 for (idx = 0; idx < rss->rss_size; idx++)
 601                         rss->ind_tbl[idx] = indir[idx];
 602         }
 603
 604         if (hkey) {
 605                 memcpy(rss->key, hkey, RSS_HASH_KEY_SIZE * sizeof(u64));
 606                 nicvf_set_rss_key(nic);
 607         }
 608
 609         nicvf_config_rss(nic);
 610         return 0;
 611 }
 612
 613 /* Get no of queues device supports and current queue count */
 614 static void nicvf_get_channels(struct net_device *dev,
 615                                struct ethtool_channels *channel)
 616 {
 617         struct nicvf *nic = netdev_priv(dev);
 618
 619         memset(channel, 0, sizeof(*channel));
 620
 621         channel->max_rx = nic->max_queues;
 622         channel->max_tx = nic->max_queues;
 623
 624         channel->rx_count = nic->rx_queues;
 625         channel->tx_count = nic->tx_queues;
 626 }
 627
 628 /* Set no of Tx, Rx queues to be used */
 629 static int nicvf_set_channels(struct net_device *dev,
 630                               struct ethtool_channels *channel)
 631 {
 632         struct nicvf *nic = netdev_priv(dev);
 633         int err = 0;
 634         bool if_up = netif_running(dev);
 635         int cqcount;
 636
 637         if (!channel->rx_count || !channel->tx_count)
 638                 return -EINVAL;
 639         if (channel->rx_count > nic->max_queues)
 640                 return -EINVAL;
 641         if (channel->tx_count > nic->max_queues)
 642                 return -EINVAL;
 643
 644         if (if_up)
 645                 nicvf_stop(dev);
 646
 647         cqcount = max(channel->rx_count, channel->tx_count);
 648
 649         if (cqcount > MAX_CMP_QUEUES_PER_QS) {
 650                 nic->sqs_count = roundup(cqcount, MAX_CMP_QUEUES_PER_QS);
 651                 nic->sqs_count = (nic->sqs_count / MAX_CMP_QUEUES_PER_QS) - 1;
 652         } else {
 653                 nic->sqs_count = 0;
 654         }
 655
 656         nic->qs->rq_cnt = min_t(u32, channel->rx_count, MAX_RCV_QUEUES_PER_QS);
 657         nic->qs->sq_cnt = min_t(u32, channel->tx_count, MAX_SND_QUEUES_PER_QS);
 658         nic->qs->cq_cnt = max(nic->qs->rq_cnt, nic->qs->sq_cnt);
 659
 660         nic->rx_queues = channel->rx_count;
 661         nic->tx_queues = channel->tx_count;
 662         err = nicvf_set_real_num_queues(dev, nic->tx_queues, nic->rx_queues);
 663         if (err)
 664                 return err;
 665
 666         if (if_up)
 667                 nicvf_open(dev);
 668
 669         netdev_info(dev, "Setting num Tx rings to %d, Rx rings to %d success\n",
 670                     nic->tx_queues, nic->rx_queues);
 671
 672         return err;
 673 }
 674
 675 static const struct ethtool_ops nicvf_ethtool_ops = {
 676         .get_settings           = nicvf_get_settings,
 677         .get_link               = nicvf_get_link,
 678         .get_drvinfo            = nicvf_get_drvinfo,
 679         .get_msglevel           = nicvf_get_msglevel,
 680         .set_msglevel           = nicvf_set_msglevel,
 681         .get_strings            = nicvf_get_strings,
 682         .get_sset_count         = nicvf_get_sset_count,
 683         .get_ethtool_stats      = nicvf_get_ethtool_stats,
 684         .get_regs_len           = nicvf_get_regs_len,
 685         .get_regs               = nicvf_get_regs,
 686         .get_coalesce           = nicvf_get_coalesce,
 687         .get_ringparam          = nicvf_get_ringparam,
 688         .get_rxnfc              = nicvf_get_rxnfc,
 689         .set_rxnfc              = nicvf_set_rxnfc,
 690         .get_rxfh_key_size      = nicvf_get_rxfh_key_size,
 691         .get_rxfh_indir_size    = nicvf_get_rxfh_indir_size,
 692         .get_rxfh               = nicvf_get_rxfh,
 693         .set_rxfh               = nicvf_set_rxfh,
 694         .get_channels           = nicvf_get_channels,
 695         .set_channels           = nicvf_set_channels,
 696         .get_ts_info            = ethtool_op_get_ts_info,
 697 };
 698
 699 void nicvf_set_ethtool_ops(struct net_device *netdev)
 700 {
 701         netdev->ethtool_ops = &nicvf_ethtool_ops;
 702 }