root/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c

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DEFINITIONS

This source file includes following definitions.
  1. __fm10k_add_stat_strings
  2. fm10k_get_stat_strings
  3. fm10k_get_strings
  4. fm10k_get_sset_count
  5. __fm10k_add_ethtool_stats
  6. fm10k_get_ethtool_stats
  7. fm10k_get_reg_q
  8. fm10k_get_reg_vsi
  9. fm10k_get_regs
  10. fm10k_get_regs_len
  11. fm10k_get_drvinfo
  12. fm10k_get_pauseparam
  13. fm10k_set_pauseparam
  14. fm10k_get_msglevel
  15. fm10k_set_msglevel
  16. fm10k_get_ringparam
  17. fm10k_set_ringparam
  18. fm10k_get_coalesce
  19. fm10k_set_coalesce
  20. fm10k_get_rss_hash_opts
  21. fm10k_get_rxnfc
  22. fm10k_set_rss_hash_opt
  23. fm10k_set_rxnfc
  24. fm10k_mbx_test
  25. fm10k_self_test
  26. fm10k_get_priv_flags
  27. fm10k_set_priv_flags
  28. fm10k_get_reta_size
  29. fm10k_write_reta
  30. fm10k_get_reta
  31. fm10k_set_reta
  32. fm10k_get_rssrk_size
  33. fm10k_get_rssh
  34. fm10k_set_rssh
  35. fm10k_max_channels
  36. fm10k_get_channels
  37. fm10k_set_channels
  38. fm10k_set_ethtool_ops

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2019 Intel Corporation. */
   3 
   4 #include <linux/vmalloc.h>
   5 
   6 #include "fm10k.h"
   7 
   8 struct fm10k_stats {
   9         /* The stat_string is expected to be a format string formatted using
  10          * vsnprintf by fm10k_add_stat_strings. Every member of a stats array
  11          * should use the same format specifiers as they will be formatted
  12          * using the same variadic arguments.
  13          */
  14         char stat_string[ETH_GSTRING_LEN];
  15         int sizeof_stat;
  16         int stat_offset;
  17 };
  18 
  19 #define FM10K_STAT_FIELDS(_type, _name, _stat) { \
  20         .stat_string = _name, \
  21         .sizeof_stat = FIELD_SIZEOF(_type, _stat), \
  22         .stat_offset = offsetof(_type, _stat) \
  23 }
  24 
  25 /* netdevice statistics */
  26 #define FM10K_NETDEV_STAT(_net_stat) \
  27         FM10K_STAT_FIELDS(struct net_device_stats, __stringify(_net_stat), \
  28                           _net_stat)
  29 
  30 static const struct fm10k_stats fm10k_gstrings_net_stats[] = {
  31         FM10K_NETDEV_STAT(tx_packets),
  32         FM10K_NETDEV_STAT(tx_bytes),
  33         FM10K_NETDEV_STAT(tx_errors),
  34         FM10K_NETDEV_STAT(rx_packets),
  35         FM10K_NETDEV_STAT(rx_bytes),
  36         FM10K_NETDEV_STAT(rx_errors),
  37         FM10K_NETDEV_STAT(rx_dropped),
  38 
  39         /* detailed Rx errors */
  40         FM10K_NETDEV_STAT(rx_length_errors),
  41         FM10K_NETDEV_STAT(rx_crc_errors),
  42         FM10K_NETDEV_STAT(rx_fifo_errors),
  43 };
  44 
  45 #define FM10K_NETDEV_STATS_LEN  ARRAY_SIZE(fm10k_gstrings_net_stats)
  46 
  47 /* General interface statistics */
  48 #define FM10K_STAT(_name, _stat) \
  49         FM10K_STAT_FIELDS(struct fm10k_intfc, _name, _stat)
  50 
  51 static const struct fm10k_stats fm10k_gstrings_global_stats[] = {
  52         FM10K_STAT("tx_restart_queue", restart_queue),
  53         FM10K_STAT("tx_busy", tx_busy),
  54         FM10K_STAT("tx_csum_errors", tx_csum_errors),
  55         FM10K_STAT("rx_alloc_failed", alloc_failed),
  56         FM10K_STAT("rx_csum_errors", rx_csum_errors),
  57 
  58         FM10K_STAT("tx_packets_nic", tx_packets_nic),
  59         FM10K_STAT("tx_bytes_nic", tx_bytes_nic),
  60         FM10K_STAT("rx_packets_nic", rx_packets_nic),
  61         FM10K_STAT("rx_bytes_nic", rx_bytes_nic),
  62         FM10K_STAT("rx_drops_nic", rx_drops_nic),
  63         FM10K_STAT("rx_overrun_pf", rx_overrun_pf),
  64         FM10K_STAT("rx_overrun_vf", rx_overrun_vf),
  65 
  66         FM10K_STAT("swapi_status", hw.swapi.status),
  67         FM10K_STAT("mac_rules_used", hw.swapi.mac.used),
  68         FM10K_STAT("mac_rules_avail", hw.swapi.mac.avail),
  69 
  70         FM10K_STAT("reset_while_pending", hw.mac.reset_while_pending),
  71 
  72         FM10K_STAT("tx_hang_count", tx_timeout_count),
  73 };
  74 
  75 static const struct fm10k_stats fm10k_gstrings_pf_stats[] = {
  76         FM10K_STAT("timeout", stats.timeout.count),
  77         FM10K_STAT("ur", stats.ur.count),
  78         FM10K_STAT("ca", stats.ca.count),
  79         FM10K_STAT("um", stats.um.count),
  80         FM10K_STAT("xec", stats.xec.count),
  81         FM10K_STAT("vlan_drop", stats.vlan_drop.count),
  82         FM10K_STAT("loopback_drop", stats.loopback_drop.count),
  83         FM10K_STAT("nodesc_drop", stats.nodesc_drop.count),
  84 };
  85 
  86 /* mailbox statistics */
  87 #define FM10K_MBX_STAT(_name, _stat) \
  88         FM10K_STAT_FIELDS(struct fm10k_mbx_info, _name, _stat)
  89 
  90 static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = {
  91         FM10K_MBX_STAT("mbx_tx_busy", tx_busy),
  92         FM10K_MBX_STAT("mbx_tx_dropped", tx_dropped),
  93         FM10K_MBX_STAT("mbx_tx_messages", tx_messages),
  94         FM10K_MBX_STAT("mbx_tx_dwords", tx_dwords),
  95         FM10K_MBX_STAT("mbx_tx_mbmem_pulled", tx_mbmem_pulled),
  96         FM10K_MBX_STAT("mbx_rx_messages", rx_messages),
  97         FM10K_MBX_STAT("mbx_rx_dwords", rx_dwords),
  98         FM10K_MBX_STAT("mbx_rx_parse_err", rx_parse_err),
  99         FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed),
 100 };
 101 
 102 /* per-queue ring statistics */
 103 #define FM10K_QUEUE_STAT(_name, _stat) \
 104         FM10K_STAT_FIELDS(struct fm10k_ring, _name, _stat)
 105 
 106 static const struct fm10k_stats fm10k_gstrings_queue_stats[] = {
 107         FM10K_QUEUE_STAT("%s_queue_%u_packets", stats.packets),
 108         FM10K_QUEUE_STAT("%s_queue_%u_bytes", stats.bytes),
 109 };
 110 
 111 #define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats)
 112 #define FM10K_PF_STATS_LEN ARRAY_SIZE(fm10k_gstrings_pf_stats)
 113 #define FM10K_MBX_STATS_LEN ARRAY_SIZE(fm10k_gstrings_mbx_stats)
 114 #define FM10K_QUEUE_STATS_LEN ARRAY_SIZE(fm10k_gstrings_queue_stats)
 115 
 116 #define FM10K_STATIC_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \
 117                                 FM10K_NETDEV_STATS_LEN + \
 118                                 FM10K_MBX_STATS_LEN)
 119 
 120 static const char fm10k_gstrings_test[][ETH_GSTRING_LEN] = {
 121         "Mailbox test (on/offline)"
 122 };
 123 
 124 #define FM10K_TEST_LEN (sizeof(fm10k_gstrings_test) / ETH_GSTRING_LEN)
 125 
 126 enum fm10k_self_test_types {
 127         FM10K_TEST_MBX,
 128         FM10K_TEST_MAX = FM10K_TEST_LEN
 129 };
 130 
 131 enum {
 132         FM10K_PRV_FLAG_LEN,
 133 };
 134 
 135 static const char fm10k_prv_flags[FM10K_PRV_FLAG_LEN][ETH_GSTRING_LEN] = {
 136 };
 137 
 138 static void __fm10k_add_stat_strings(u8 **p, const struct fm10k_stats stats[],
 139                                      const unsigned int size, ...)
 140 {
 141         unsigned int i;
 142 
 143         for (i = 0; i < size; i++) {
 144                 va_list args;
 145 
 146                 va_start(args, size);
 147                 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
 148                 *p += ETH_GSTRING_LEN;
 149                 va_end(args);
 150         }
 151 }
 152 
 153 #define fm10k_add_stat_strings(p, stats, ...) \
 154         __fm10k_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
 155 
 156 static void fm10k_get_stat_strings(struct net_device *dev, u8 *data)
 157 {
 158         struct fm10k_intfc *interface = netdev_priv(dev);
 159         unsigned int i;
 160 
 161         fm10k_add_stat_strings(&data, fm10k_gstrings_net_stats);
 162 
 163         fm10k_add_stat_strings(&data, fm10k_gstrings_global_stats);
 164 
 165         fm10k_add_stat_strings(&data, fm10k_gstrings_mbx_stats);
 166 
 167         if (interface->hw.mac.type != fm10k_mac_vf)
 168                 fm10k_add_stat_strings(&data, fm10k_gstrings_pf_stats);
 169 
 170         for (i = 0; i < interface->hw.mac.max_queues; i++) {
 171                 fm10k_add_stat_strings(&data, fm10k_gstrings_queue_stats,
 172                                        "tx", i);
 173 
 174                 fm10k_add_stat_strings(&data, fm10k_gstrings_queue_stats,
 175                                        "rx", i);
 176         }
 177 }
 178 
 179 static void fm10k_get_strings(struct net_device *dev,
 180                               u32 stringset, u8 *data)
 181 {
 182         switch (stringset) {
 183         case ETH_SS_TEST:
 184                 memcpy(data, fm10k_gstrings_test,
 185                        FM10K_TEST_LEN * ETH_GSTRING_LEN);
 186                 break;
 187         case ETH_SS_STATS:
 188                 fm10k_get_stat_strings(dev, data);
 189                 break;
 190         case ETH_SS_PRIV_FLAGS:
 191                 memcpy(data, fm10k_prv_flags,
 192                        FM10K_PRV_FLAG_LEN * ETH_GSTRING_LEN);
 193                 break;
 194         }
 195 }
 196 
 197 static int fm10k_get_sset_count(struct net_device *dev, int sset)
 198 {
 199         struct fm10k_intfc *interface = netdev_priv(dev);
 200         struct fm10k_hw *hw = &interface->hw;
 201         int stats_len = FM10K_STATIC_STATS_LEN;
 202 
 203         switch (sset) {
 204         case ETH_SS_TEST:
 205                 return FM10K_TEST_LEN;
 206         case ETH_SS_STATS:
 207                 stats_len += hw->mac.max_queues * 2 * FM10K_QUEUE_STATS_LEN;
 208 
 209                 if (hw->mac.type != fm10k_mac_vf)
 210                         stats_len += FM10K_PF_STATS_LEN;
 211 
 212                 return stats_len;
 213         case ETH_SS_PRIV_FLAGS:
 214                 return FM10K_PRV_FLAG_LEN;
 215         default:
 216                 return -EOPNOTSUPP;
 217         }
 218 }
 219 
 220 static void __fm10k_add_ethtool_stats(u64 **data, void *pointer,
 221                                       const struct fm10k_stats stats[],
 222                                       const unsigned int size)
 223 {
 224         unsigned int i;
 225 
 226         if (!pointer) {
 227                 /* memory is not zero allocated so we have to clear it */
 228                 for (i = 0; i < size; i++)
 229                         *((*data)++) = 0;
 230                 return;
 231         }
 232 
 233         for (i = 0; i < size; i++) {
 234                 char *p = (char *)pointer + stats[i].stat_offset;
 235 
 236                 switch (stats[i].sizeof_stat) {
 237                 case sizeof(u64):
 238                         *((*data)++) = *(u64 *)p;
 239                         break;
 240                 case sizeof(u32):
 241                         *((*data)++) = *(u32 *)p;
 242                         break;
 243                 case sizeof(u16):
 244                         *((*data)++) = *(u16 *)p;
 245                         break;
 246                 case sizeof(u8):
 247                         *((*data)++) = *(u8 *)p;
 248                         break;
 249                 default:
 250                         WARN_ONCE(1, "unexpected stat size for %s",
 251                                   stats[i].stat_string);
 252                         *((*data)++) = 0;
 253                 }
 254         }
 255 }
 256 
 257 #define fm10k_add_ethtool_stats(data, pointer, stats) \
 258         __fm10k_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
 259 
 260 static void fm10k_get_ethtool_stats(struct net_device *netdev,
 261                                     struct ethtool_stats __always_unused *stats,
 262                                     u64 *data)
 263 {
 264         struct fm10k_intfc *interface = netdev_priv(netdev);
 265         struct net_device_stats *net_stats = &netdev->stats;
 266         int i;
 267 
 268         fm10k_update_stats(interface);
 269 
 270         fm10k_add_ethtool_stats(&data, net_stats, fm10k_gstrings_net_stats);
 271 
 272         fm10k_add_ethtool_stats(&data, interface, fm10k_gstrings_global_stats);
 273 
 274         fm10k_add_ethtool_stats(&data, &interface->hw.mbx,
 275                                 fm10k_gstrings_mbx_stats);
 276 
 277         if (interface->hw.mac.type != fm10k_mac_vf) {
 278                 fm10k_add_ethtool_stats(&data, interface,
 279                                         fm10k_gstrings_pf_stats);
 280         }
 281 
 282         for (i = 0; i < interface->hw.mac.max_queues; i++) {
 283                 struct fm10k_ring *ring;
 284 
 285                 ring = interface->tx_ring[i];
 286                 fm10k_add_ethtool_stats(&data, ring,
 287                                         fm10k_gstrings_queue_stats);
 288 
 289                 ring = interface->rx_ring[i];
 290                 fm10k_add_ethtool_stats(&data, ring,
 291                                         fm10k_gstrings_queue_stats);
 292         }
 293 }
 294 
 295 /* If function below adds more registers this define needs to be updated */
 296 #define FM10K_REGS_LEN_Q 29
 297 
 298 static void fm10k_get_reg_q(struct fm10k_hw *hw, u32 *buff, int i)
 299 {
 300         int idx = 0;
 301 
 302         buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAL(i));
 303         buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAH(i));
 304         buff[idx++] = fm10k_read_reg(hw, FM10K_RDLEN(i));
 305         buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_RXCTRL(i));
 306         buff[idx++] = fm10k_read_reg(hw, FM10K_RDH(i));
 307         buff[idx++] = fm10k_read_reg(hw, FM10K_RDT(i));
 308         buff[idx++] = fm10k_read_reg(hw, FM10K_RXQCTL(i));
 309         buff[idx++] = fm10k_read_reg(hw, FM10K_RXDCTL(i));
 310         buff[idx++] = fm10k_read_reg(hw, FM10K_RXINT(i));
 311         buff[idx++] = fm10k_read_reg(hw, FM10K_SRRCTL(i));
 312         buff[idx++] = fm10k_read_reg(hw, FM10K_QPRC(i));
 313         buff[idx++] = fm10k_read_reg(hw, FM10K_QPRDC(i));
 314         buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_L(i));
 315         buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_H(i));
 316         buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAL(i));
 317         buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAH(i));
 318         buff[idx++] = fm10k_read_reg(hw, FM10K_TDLEN(i));
 319         buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_TXCTRL(i));
 320         buff[idx++] = fm10k_read_reg(hw, FM10K_TDH(i));
 321         buff[idx++] = fm10k_read_reg(hw, FM10K_TDT(i));
 322         buff[idx++] = fm10k_read_reg(hw, FM10K_TXDCTL(i));
 323         buff[idx++] = fm10k_read_reg(hw, FM10K_TXQCTL(i));
 324         buff[idx++] = fm10k_read_reg(hw, FM10K_TXINT(i));
 325         buff[idx++] = fm10k_read_reg(hw, FM10K_QPTC(i));
 326         buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_L(i));
 327         buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_H(i));
 328         buff[idx++] = fm10k_read_reg(hw, FM10K_TQDLOC(i));
 329         buff[idx++] = fm10k_read_reg(hw, FM10K_TX_SGLORT(i));
 330         buff[idx++] = fm10k_read_reg(hw, FM10K_PFVTCTL(i));
 331 
 332         BUG_ON(idx != FM10K_REGS_LEN_Q);
 333 }
 334 
 335 /* If function above adds more registers this define needs to be updated */
 336 #define FM10K_REGS_LEN_VSI 43
 337 
 338 static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i)
 339 {
 340         int idx = 0, j;
 341 
 342         buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i));
 343         for (j = 0; j < 10; j++)
 344                 buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j));
 345         for (j = 0; j < 32; j++)
 346                 buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j));
 347 
 348         BUG_ON(idx != FM10K_REGS_LEN_VSI);
 349 }
 350 
 351 static void fm10k_get_regs(struct net_device *netdev,
 352                            struct ethtool_regs *regs, void *p)
 353 {
 354         struct fm10k_intfc *interface = netdev_priv(netdev);
 355         struct fm10k_hw *hw = &interface->hw;
 356         u32 *buff = p;
 357         u16 i;
 358 
 359         regs->version = BIT(24) | (hw->revision_id << 16) | hw->device_id;
 360 
 361         switch (hw->mac.type) {
 362         case fm10k_mac_pf:
 363                 /* General PF Registers */
 364                 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL);
 365                 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL_EXT);
 366                 *(buff++) = fm10k_read_reg(hw, FM10K_GCR);
 367                 *(buff++) = fm10k_read_reg(hw, FM10K_GCR_EXT);
 368 
 369                 for (i = 0; i < 8; i++) {
 370                         *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTMAP(i));
 371                         *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTDEC(i));
 372                 }
 373 
 374                 for (i = 0; i < 65; i++) {
 375                         fm10k_get_reg_vsi(hw, buff, i);
 376                         buff += FM10K_REGS_LEN_VSI;
 377                 }
 378 
 379                 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL);
 380                 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL2);
 381 
 382                 for (i = 0; i < FM10K_MAX_QUEUES_PF; i++) {
 383                         fm10k_get_reg_q(hw, buff, i);
 384                         buff += FM10K_REGS_LEN_Q;
 385                 }
 386 
 387                 *(buff++) = fm10k_read_reg(hw, FM10K_TPH_CTRL);
 388 
 389                 for (i = 0; i < 8; i++)
 390                         *(buff++) = fm10k_read_reg(hw, FM10K_INT_MAP(i));
 391 
 392                 /* Interrupt Throttling Registers */
 393                 for (i = 0; i < 130; i++)
 394                         *(buff++) = fm10k_read_reg(hw, FM10K_ITR(i));
 395 
 396                 break;
 397         case fm10k_mac_vf:
 398                 /* General VF registers */
 399                 *(buff++) = fm10k_read_reg(hw, FM10K_VFCTRL);
 400                 *(buff++) = fm10k_read_reg(hw, FM10K_VFINT_MAP);
 401                 *(buff++) = fm10k_read_reg(hw, FM10K_VFSYSTIME);
 402 
 403                 /* Interrupt Throttling Registers */
 404                 for (i = 0; i < 8; i++)
 405                         *(buff++) = fm10k_read_reg(hw, FM10K_VFITR(i));
 406 
 407                 fm10k_get_reg_vsi(hw, buff, 0);
 408                 buff += FM10K_REGS_LEN_VSI;
 409 
 410                 for (i = 0; i < FM10K_MAX_QUEUES_POOL; i++) {
 411                         if (i < hw->mac.max_queues)
 412                                 fm10k_get_reg_q(hw, buff, i);
 413                         else
 414                                 memset(buff, 0, sizeof(u32) * FM10K_REGS_LEN_Q);
 415                         buff += FM10K_REGS_LEN_Q;
 416                 }
 417 
 418                 break;
 419         default:
 420                 return;
 421         }
 422 }
 423 
 424 /* If function above adds more registers these define need to be updated */
 425 #define FM10K_REGS_LEN_PF \
 426 (162 + (65 * FM10K_REGS_LEN_VSI) + (FM10K_MAX_QUEUES_PF * FM10K_REGS_LEN_Q))
 427 #define FM10K_REGS_LEN_VF \
 428 (11 + FM10K_REGS_LEN_VSI + (FM10K_MAX_QUEUES_POOL * FM10K_REGS_LEN_Q))
 429 
 430 static int fm10k_get_regs_len(struct net_device *netdev)
 431 {
 432         struct fm10k_intfc *interface = netdev_priv(netdev);
 433         struct fm10k_hw *hw = &interface->hw;
 434 
 435         switch (hw->mac.type) {
 436         case fm10k_mac_pf:
 437                 return FM10K_REGS_LEN_PF * sizeof(u32);
 438         case fm10k_mac_vf:
 439                 return FM10K_REGS_LEN_VF * sizeof(u32);
 440         default:
 441                 return 0;
 442         }
 443 }
 444 
 445 static void fm10k_get_drvinfo(struct net_device *dev,
 446                               struct ethtool_drvinfo *info)
 447 {
 448         struct fm10k_intfc *interface = netdev_priv(dev);
 449 
 450         strncpy(info->driver, fm10k_driver_name,
 451                 sizeof(info->driver) - 1);
 452         strncpy(info->version, fm10k_driver_version,
 453                 sizeof(info->version) - 1);
 454         strncpy(info->bus_info, pci_name(interface->pdev),
 455                 sizeof(info->bus_info) - 1);
 456 }
 457 
 458 static void fm10k_get_pauseparam(struct net_device *dev,
 459                                  struct ethtool_pauseparam *pause)
 460 {
 461         struct fm10k_intfc *interface = netdev_priv(dev);
 462 
 463         /* record fixed values for autoneg and tx pause */
 464         pause->autoneg = 0;
 465         pause->tx_pause = 1;
 466 
 467         pause->rx_pause = interface->rx_pause ? 1 : 0;
 468 }
 469 
 470 static int fm10k_set_pauseparam(struct net_device *dev,
 471                                 struct ethtool_pauseparam *pause)
 472 {
 473         struct fm10k_intfc *interface = netdev_priv(dev);
 474         struct fm10k_hw *hw = &interface->hw;
 475 
 476         if (pause->autoneg || !pause->tx_pause)
 477                 return -EINVAL;
 478 
 479         /* we can only support pause on the PF to avoid head-of-line blocking */
 480         if (hw->mac.type == fm10k_mac_pf)
 481                 interface->rx_pause = pause->rx_pause ? ~0 : 0;
 482         else if (pause->rx_pause)
 483                 return -EINVAL;
 484 
 485         if (netif_running(dev))
 486                 fm10k_update_rx_drop_en(interface);
 487 
 488         return 0;
 489 }
 490 
 491 static u32 fm10k_get_msglevel(struct net_device *netdev)
 492 {
 493         struct fm10k_intfc *interface = netdev_priv(netdev);
 494 
 495         return interface->msg_enable;
 496 }
 497 
 498 static void fm10k_set_msglevel(struct net_device *netdev, u32 data)
 499 {
 500         struct fm10k_intfc *interface = netdev_priv(netdev);
 501 
 502         interface->msg_enable = data;
 503 }
 504 
 505 static void fm10k_get_ringparam(struct net_device *netdev,
 506                                 struct ethtool_ringparam *ring)
 507 {
 508         struct fm10k_intfc *interface = netdev_priv(netdev);
 509 
 510         ring->rx_max_pending = FM10K_MAX_RXD;
 511         ring->tx_max_pending = FM10K_MAX_TXD;
 512         ring->rx_mini_max_pending = 0;
 513         ring->rx_jumbo_max_pending = 0;
 514         ring->rx_pending = interface->rx_ring_count;
 515         ring->tx_pending = interface->tx_ring_count;
 516         ring->rx_mini_pending = 0;
 517         ring->rx_jumbo_pending = 0;
 518 }
 519 
 520 static int fm10k_set_ringparam(struct net_device *netdev,
 521                                struct ethtool_ringparam *ring)
 522 {
 523         struct fm10k_intfc *interface = netdev_priv(netdev);
 524         struct fm10k_ring *temp_ring;
 525         int i, err = 0;
 526         u32 new_rx_count, new_tx_count;
 527 
 528         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 529                 return -EINVAL;
 530 
 531         new_tx_count = clamp_t(u32, ring->tx_pending,
 532                                FM10K_MIN_TXD, FM10K_MAX_TXD);
 533         new_tx_count = ALIGN(new_tx_count, FM10K_REQ_TX_DESCRIPTOR_MULTIPLE);
 534 
 535         new_rx_count = clamp_t(u32, ring->rx_pending,
 536                                FM10K_MIN_RXD, FM10K_MAX_RXD);
 537         new_rx_count = ALIGN(new_rx_count, FM10K_REQ_RX_DESCRIPTOR_MULTIPLE);
 538 
 539         if ((new_tx_count == interface->tx_ring_count) &&
 540             (new_rx_count == interface->rx_ring_count)) {
 541                 /* nothing to do */
 542                 return 0;
 543         }
 544 
 545         while (test_and_set_bit(__FM10K_RESETTING, interface->state))
 546                 usleep_range(1000, 2000);
 547 
 548         if (!netif_running(interface->netdev)) {
 549                 for (i = 0; i < interface->num_tx_queues; i++)
 550                         interface->tx_ring[i]->count = new_tx_count;
 551                 for (i = 0; i < interface->num_rx_queues; i++)
 552                         interface->rx_ring[i]->count = new_rx_count;
 553                 interface->tx_ring_count = new_tx_count;
 554                 interface->rx_ring_count = new_rx_count;
 555                 goto clear_reset;
 556         }
 557 
 558         /* allocate temporary buffer to store rings in */
 559         i = max_t(int, interface->num_tx_queues, interface->num_rx_queues);
 560         temp_ring = vmalloc(array_size(i, sizeof(struct fm10k_ring)));
 561 
 562         if (!temp_ring) {
 563                 err = -ENOMEM;
 564                 goto clear_reset;
 565         }
 566 
 567         fm10k_down(interface);
 568 
 569         /* Setup new Tx resources and free the old Tx resources in that order.
 570          * We can then assign the new resources to the rings via a memcpy.
 571          * The advantage to this approach is that we are guaranteed to still
 572          * have resources even in the case of an allocation failure.
 573          */
 574         if (new_tx_count != interface->tx_ring_count) {
 575                 for (i = 0; i < interface->num_tx_queues; i++) {
 576                         memcpy(&temp_ring[i], interface->tx_ring[i],
 577                                sizeof(struct fm10k_ring));
 578 
 579                         temp_ring[i].count = new_tx_count;
 580                         err = fm10k_setup_tx_resources(&temp_ring[i]);
 581                         if (err) {
 582                                 while (i) {
 583                                         i--;
 584                                         fm10k_free_tx_resources(&temp_ring[i]);
 585                                 }
 586                                 goto err_setup;
 587                         }
 588                 }
 589 
 590                 for (i = 0; i < interface->num_tx_queues; i++) {
 591                         fm10k_free_tx_resources(interface->tx_ring[i]);
 592 
 593                         memcpy(interface->tx_ring[i], &temp_ring[i],
 594                                sizeof(struct fm10k_ring));
 595                 }
 596 
 597                 interface->tx_ring_count = new_tx_count;
 598         }
 599 
 600         /* Repeat the process for the Rx rings if needed */
 601         if (new_rx_count != interface->rx_ring_count) {
 602                 for (i = 0; i < interface->num_rx_queues; i++) {
 603                         memcpy(&temp_ring[i], interface->rx_ring[i],
 604                                sizeof(struct fm10k_ring));
 605 
 606                         temp_ring[i].count = new_rx_count;
 607                         err = fm10k_setup_rx_resources(&temp_ring[i]);
 608                         if (err) {
 609                                 while (i) {
 610                                         i--;
 611                                         fm10k_free_rx_resources(&temp_ring[i]);
 612                                 }
 613                                 goto err_setup;
 614                         }
 615                 }
 616 
 617                 for (i = 0; i < interface->num_rx_queues; i++) {
 618                         fm10k_free_rx_resources(interface->rx_ring[i]);
 619 
 620                         memcpy(interface->rx_ring[i], &temp_ring[i],
 621                                sizeof(struct fm10k_ring));
 622                 }
 623 
 624                 interface->rx_ring_count = new_rx_count;
 625         }
 626 
 627 err_setup:
 628         fm10k_up(interface);
 629         vfree(temp_ring);
 630 clear_reset:
 631         clear_bit(__FM10K_RESETTING, interface->state);
 632         return err;
 633 }
 634 
 635 static int fm10k_get_coalesce(struct net_device *dev,
 636                               struct ethtool_coalesce *ec)
 637 {
 638         struct fm10k_intfc *interface = netdev_priv(dev);
 639 
 640         ec->use_adaptive_tx_coalesce = ITR_IS_ADAPTIVE(interface->tx_itr);
 641         ec->tx_coalesce_usecs = interface->tx_itr & ~FM10K_ITR_ADAPTIVE;
 642 
 643         ec->use_adaptive_rx_coalesce = ITR_IS_ADAPTIVE(interface->rx_itr);
 644         ec->rx_coalesce_usecs = interface->rx_itr & ~FM10K_ITR_ADAPTIVE;
 645 
 646         return 0;
 647 }
 648 
 649 static int fm10k_set_coalesce(struct net_device *dev,
 650                               struct ethtool_coalesce *ec)
 651 {
 652         struct fm10k_intfc *interface = netdev_priv(dev);
 653         u16 tx_itr, rx_itr;
 654         int i;
 655 
 656         /* verify limits */
 657         if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) ||
 658             (ec->tx_coalesce_usecs > FM10K_ITR_MAX))
 659                 return -EINVAL;
 660 
 661         /* record settings */
 662         tx_itr = ec->tx_coalesce_usecs;
 663         rx_itr = ec->rx_coalesce_usecs;
 664 
 665         /* set initial values for adaptive ITR */
 666         if (ec->use_adaptive_tx_coalesce)
 667                 tx_itr = FM10K_ITR_ADAPTIVE | FM10K_TX_ITR_DEFAULT;
 668 
 669         if (ec->use_adaptive_rx_coalesce)
 670                 rx_itr = FM10K_ITR_ADAPTIVE | FM10K_RX_ITR_DEFAULT;
 671 
 672         /* update interface */
 673         interface->tx_itr = tx_itr;
 674         interface->rx_itr = rx_itr;
 675 
 676         /* update q_vectors */
 677         for (i = 0; i < interface->num_q_vectors; i++) {
 678                 struct fm10k_q_vector *qv = interface->q_vector[i];
 679 
 680                 qv->tx.itr = tx_itr;
 681                 qv->rx.itr = rx_itr;
 682         }
 683 
 684         return 0;
 685 }
 686 
 687 static int fm10k_get_rss_hash_opts(struct fm10k_intfc *interface,
 688                                    struct ethtool_rxnfc *cmd)
 689 {
 690         cmd->data = 0;
 691 
 692         /* Report default options for RSS on fm10k */
 693         switch (cmd->flow_type) {
 694         case TCP_V4_FLOW:
 695         case TCP_V6_FLOW:
 696                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 697                 /* fall through */
 698         case UDP_V4_FLOW:
 699                 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
 700                              interface->flags))
 701                         cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 702                 /* fall through */
 703         case SCTP_V4_FLOW:
 704         case SCTP_V6_FLOW:
 705         case AH_ESP_V4_FLOW:
 706         case AH_ESP_V6_FLOW:
 707         case AH_V4_FLOW:
 708         case AH_V6_FLOW:
 709         case ESP_V4_FLOW:
 710         case ESP_V6_FLOW:
 711         case IPV4_FLOW:
 712         case IPV6_FLOW:
 713                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
 714                 break;
 715         case UDP_V6_FLOW:
 716                 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
 717                              interface->flags))
 718                         cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 719                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
 720                 break;
 721         default:
 722                 return -EINVAL;
 723         }
 724 
 725         return 0;
 726 }
 727 
 728 static int fm10k_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 729                            u32 __always_unused *rule_locs)
 730 {
 731         struct fm10k_intfc *interface = netdev_priv(dev);
 732         int ret = -EOPNOTSUPP;
 733 
 734         switch (cmd->cmd) {
 735         case ETHTOOL_GRXRINGS:
 736                 cmd->data = interface->num_rx_queues;
 737                 ret = 0;
 738                 break;
 739         case ETHTOOL_GRXFH:
 740                 ret = fm10k_get_rss_hash_opts(interface, cmd);
 741                 break;
 742         default:
 743                 break;
 744         }
 745 
 746         return ret;
 747 }
 748 
 749 static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface,
 750                                   struct ethtool_rxnfc *nfc)
 751 {
 752         int rss_ipv4_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
 753                                     interface->flags);
 754         int rss_ipv6_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
 755                                     interface->flags);
 756 
 757         /* RSS does not support anything other than hashing
 758          * to queues on src and dst IPs and ports
 759          */
 760         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
 761                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
 762                 return -EINVAL;
 763 
 764         switch (nfc->flow_type) {
 765         case TCP_V4_FLOW:
 766         case TCP_V6_FLOW:
 767                 if (!(nfc->data & RXH_IP_SRC) ||
 768                     !(nfc->data & RXH_IP_DST) ||
 769                     !(nfc->data & RXH_L4_B_0_1) ||
 770                     !(nfc->data & RXH_L4_B_2_3))
 771                         return -EINVAL;
 772                 break;
 773         case UDP_V4_FLOW:
 774                 if (!(nfc->data & RXH_IP_SRC) ||
 775                     !(nfc->data & RXH_IP_DST))
 776                         return -EINVAL;
 777                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 778                 case 0:
 779                         clear_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
 780                                   interface->flags);
 781                         break;
 782                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 783                         set_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
 784                                 interface->flags);
 785                         break;
 786                 default:
 787                         return -EINVAL;
 788                 }
 789                 break;
 790         case UDP_V6_FLOW:
 791                 if (!(nfc->data & RXH_IP_SRC) ||
 792                     !(nfc->data & RXH_IP_DST))
 793                         return -EINVAL;
 794                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 795                 case 0:
 796                         clear_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
 797                                   interface->flags);
 798                         break;
 799                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 800                         set_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
 801                                 interface->flags);
 802                         break;
 803                 default:
 804                         return -EINVAL;
 805                 }
 806                 break;
 807         case AH_ESP_V4_FLOW:
 808         case AH_V4_FLOW:
 809         case ESP_V4_FLOW:
 810         case SCTP_V4_FLOW:
 811         case AH_ESP_V6_FLOW:
 812         case AH_V6_FLOW:
 813         case ESP_V6_FLOW:
 814         case SCTP_V6_FLOW:
 815                 if (!(nfc->data & RXH_IP_SRC) ||
 816                     !(nfc->data & RXH_IP_DST) ||
 817                     (nfc->data & RXH_L4_B_0_1) ||
 818                     (nfc->data & RXH_L4_B_2_3))
 819                         return -EINVAL;
 820                 break;
 821         default:
 822                 return -EINVAL;
 823         }
 824 
 825         /* If something changed we need to update the MRQC register. Note that
 826          * test_bit() is guaranteed to return strictly 0 or 1, so testing for
 827          * equality is safe.
 828          */
 829         if ((rss_ipv4_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
 830                                       interface->flags)) ||
 831             (rss_ipv6_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
 832                                       interface->flags))) {
 833                 struct fm10k_hw *hw = &interface->hw;
 834                 bool warn = false;
 835                 u32 mrqc;
 836 
 837                 /* Perform hash on these packet types */
 838                 mrqc = FM10K_MRQC_IPV4 |
 839                        FM10K_MRQC_TCP_IPV4 |
 840                        FM10K_MRQC_IPV6 |
 841                        FM10K_MRQC_TCP_IPV6;
 842 
 843                 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
 844                              interface->flags)) {
 845                         mrqc |= FM10K_MRQC_UDP_IPV4;
 846                         warn = true;
 847                 }
 848                 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
 849                              interface->flags)) {
 850                         mrqc |= FM10K_MRQC_UDP_IPV6;
 851                         warn = true;
 852                 }
 853 
 854                 /* If we enable UDP RSS display a warning that this may cause
 855                  * fragmented UDP packets to arrive out of order.
 856                  */
 857                 if (warn)
 858                         netif_warn(interface, drv, interface->netdev,
 859                                    "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");
 860 
 861                 fm10k_write_reg(hw, FM10K_MRQC(0), mrqc);
 862         }
 863 
 864         return 0;
 865 }
 866 
 867 static int fm10k_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
 868 {
 869         struct fm10k_intfc *interface = netdev_priv(dev);
 870         int ret = -EOPNOTSUPP;
 871 
 872         switch (cmd->cmd) {
 873         case ETHTOOL_SRXFH:
 874                 ret = fm10k_set_rss_hash_opt(interface, cmd);
 875                 break;
 876         default:
 877                 break;
 878         }
 879 
 880         return ret;
 881 }
 882 
 883 static int fm10k_mbx_test(struct fm10k_intfc *interface, u64 *data)
 884 {
 885         struct fm10k_hw *hw = &interface->hw;
 886         struct fm10k_mbx_info *mbx = &hw->mbx;
 887         u32 attr_flag, test_msg[6];
 888         unsigned long timeout;
 889         int err = -EINVAL;
 890 
 891         /* For now this is a VF only feature */
 892         if (hw->mac.type != fm10k_mac_vf)
 893                 return 0;
 894 
 895         /* loop through both nested and unnested attribute types */
 896         for (attr_flag = BIT(FM10K_TEST_MSG_UNSET);
 897              attr_flag < BIT(2 * FM10K_TEST_MSG_NESTED);
 898              attr_flag += attr_flag) {
 899                 /* generate message to be tested */
 900                 fm10k_tlv_msg_test_create(test_msg, attr_flag);
 901 
 902                 fm10k_mbx_lock(interface);
 903                 mbx->test_result = FM10K_NOT_IMPLEMENTED;
 904                 err = mbx->ops.enqueue_tx(hw, mbx, test_msg);
 905                 fm10k_mbx_unlock(interface);
 906 
 907                 /* wait up to 1 second for response */
 908                 timeout = jiffies + HZ;
 909                 do {
 910                         if (err < 0)
 911                                 goto err_out;
 912 
 913                         usleep_range(500, 1000);
 914 
 915                         fm10k_mbx_lock(interface);
 916                         mbx->ops.process(hw, mbx);
 917                         fm10k_mbx_unlock(interface);
 918 
 919                         err = mbx->test_result;
 920                         if (!err)
 921                                 break;
 922                 } while (time_is_after_jiffies(timeout));
 923 
 924                 /* reporting errors */
 925                 if (err)
 926                         goto err_out;
 927         }
 928 
 929 err_out:
 930         *data = err < 0 ? (attr_flag) : (err > 0);
 931         return err;
 932 }
 933 
 934 static void fm10k_self_test(struct net_device *dev,
 935                             struct ethtool_test *eth_test, u64 *data)
 936 {
 937         struct fm10k_intfc *interface = netdev_priv(dev);
 938         struct fm10k_hw *hw = &interface->hw;
 939 
 940         memset(data, 0, sizeof(*data) * FM10K_TEST_LEN);
 941 
 942         if (FM10K_REMOVED(hw->hw_addr)) {
 943                 netif_err(interface, drv, dev,
 944                           "Interface removed - test blocked\n");
 945                 eth_test->flags |= ETH_TEST_FL_FAILED;
 946                 return;
 947         }
 948 
 949         if (fm10k_mbx_test(interface, &data[FM10K_TEST_MBX]))
 950                 eth_test->flags |= ETH_TEST_FL_FAILED;
 951 }
 952 
 953 static u32 fm10k_get_priv_flags(struct net_device *netdev)
 954 {
 955         return 0;
 956 }
 957 
 958 static int fm10k_set_priv_flags(struct net_device *netdev, u32 priv_flags)
 959 {
 960         if (priv_flags >= BIT(FM10K_PRV_FLAG_LEN))
 961                 return -EINVAL;
 962 
 963         return 0;
 964 }
 965 
 966 static u32 fm10k_get_reta_size(struct net_device __always_unused *netdev)
 967 {
 968         return FM10K_RETA_SIZE * FM10K_RETA_ENTRIES_PER_REG;
 969 }
 970 
 971 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir)
 972 {
 973         u16 rss_i = interface->ring_feature[RING_F_RSS].indices;
 974         struct fm10k_hw *hw = &interface->hw;
 975         u32 table[4];
 976         int i, j;
 977 
 978         /* record entries to reta table */
 979         for (i = 0; i < FM10K_RETA_SIZE; i++) {
 980                 u32 reta, n;
 981 
 982                 /* generate a new table if we weren't given one */
 983                 for (j = 0; j < 4; j++) {
 984                         if (indir)
 985                                 n = indir[4 * i + j];
 986                         else
 987                                 n = ethtool_rxfh_indir_default(4 * i + j,
 988                                                                rss_i);
 989 
 990                         table[j] = n;
 991                 }
 992 
 993                 reta = table[0] |
 994                         (table[1] << 8) |
 995                         (table[2] << 16) |
 996                         (table[3] << 24);
 997 
 998                 if (interface->reta[i] == reta)
 999                         continue;
1000 
1001                 interface->reta[i] = reta;
1002                 fm10k_write_reg(hw, FM10K_RETA(0, i), reta);
1003         }
1004 }
1005 
1006 static int fm10k_get_reta(struct net_device *netdev, u32 *indir)
1007 {
1008         struct fm10k_intfc *interface = netdev_priv(netdev);
1009         int i;
1010 
1011         if (!indir)
1012                 return 0;
1013 
1014         for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) {
1015                 u32 reta = interface->reta[i];
1016 
1017                 indir[0] = (reta << 24) >> 24;
1018                 indir[1] = (reta << 16) >> 24;
1019                 indir[2] = (reta <<  8) >> 24;
1020                 indir[3] = (reta) >> 24;
1021         }
1022 
1023         return 0;
1024 }
1025 
1026 static int fm10k_set_reta(struct net_device *netdev, const u32 *indir)
1027 {
1028         struct fm10k_intfc *interface = netdev_priv(netdev);
1029         int i;
1030         u16 rss_i;
1031 
1032         if (!indir)
1033                 return 0;
1034 
1035         /* Verify user input. */
1036         rss_i = interface->ring_feature[RING_F_RSS].indices;
1037         for (i = fm10k_get_reta_size(netdev); i--;) {
1038                 if (indir[i] < rss_i)
1039                         continue;
1040                 return -EINVAL;
1041         }
1042 
1043         fm10k_write_reta(interface, indir);
1044 
1045         return 0;
1046 }
1047 
1048 static u32 fm10k_get_rssrk_size(struct net_device __always_unused *netdev)
1049 {
1050         return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG;
1051 }
1052 
1053 static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key,
1054                           u8 *hfunc)
1055 {
1056         struct fm10k_intfc *interface = netdev_priv(netdev);
1057         int i, err;
1058 
1059         if (hfunc)
1060                 *hfunc = ETH_RSS_HASH_TOP;
1061 
1062         err = fm10k_get_reta(netdev, indir);
1063         if (err || !key)
1064                 return err;
1065 
1066         for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4)
1067                 *(__le32 *)key = cpu_to_le32(interface->rssrk[i]);
1068 
1069         return 0;
1070 }
1071 
1072 static int fm10k_set_rssh(struct net_device *netdev, const u32 *indir,
1073                           const u8 *key, const u8 hfunc)
1074 {
1075         struct fm10k_intfc *interface = netdev_priv(netdev);
1076         struct fm10k_hw *hw = &interface->hw;
1077         int i, err;
1078 
1079         /* We do not allow change in unsupported parameters */
1080         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1081                 return -EOPNOTSUPP;
1082 
1083         err = fm10k_set_reta(netdev, indir);
1084         if (err || !key)
1085                 return err;
1086 
1087         for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) {
1088                 u32 rssrk = le32_to_cpu(*(__le32 *)key);
1089 
1090                 if (interface->rssrk[i] == rssrk)
1091                         continue;
1092 
1093                 interface->rssrk[i] = rssrk;
1094                 fm10k_write_reg(hw, FM10K_RSSRK(0, i), rssrk);
1095         }
1096 
1097         return 0;
1098 }
1099 
1100 static unsigned int fm10k_max_channels(struct net_device *dev)
1101 {
1102         struct fm10k_intfc *interface = netdev_priv(dev);
1103         unsigned int max_combined = interface->hw.mac.max_queues;
1104         u8 tcs = netdev_get_num_tc(dev);
1105 
1106         /* For QoS report channels per traffic class */
1107         if (tcs > 1)
1108                 max_combined = BIT((fls(max_combined / tcs) - 1));
1109 
1110         return max_combined;
1111 }
1112 
1113 static void fm10k_get_channels(struct net_device *dev,
1114                                struct ethtool_channels *ch)
1115 {
1116         struct fm10k_intfc *interface = netdev_priv(dev);
1117 
1118         /* report maximum channels */
1119         ch->max_combined = fm10k_max_channels(dev);
1120 
1121         /* report info for other vector */
1122         ch->max_other = NON_Q_VECTORS;
1123         ch->other_count = ch->max_other;
1124 
1125         /* record RSS queues */
1126         ch->combined_count = interface->ring_feature[RING_F_RSS].indices;
1127 }
1128 
1129 static int fm10k_set_channels(struct net_device *dev,
1130                               struct ethtool_channels *ch)
1131 {
1132         struct fm10k_intfc *interface = netdev_priv(dev);
1133         unsigned int count = ch->combined_count;
1134 
1135         /* verify they are not requesting separate vectors */
1136         if (!count || ch->rx_count || ch->tx_count)
1137                 return -EINVAL;
1138 
1139         /* verify other_count has not changed */
1140         if (ch->other_count != NON_Q_VECTORS)
1141                 return -EINVAL;
1142 
1143         /* verify the number of channels does not exceed hardware limits */
1144         if (count > fm10k_max_channels(dev))
1145                 return -EINVAL;
1146 
1147         interface->ring_feature[RING_F_RSS].limit = count;
1148 
1149         /* use setup TC to update any traffic class queue mapping */
1150         return fm10k_setup_tc(dev, netdev_get_num_tc(dev));
1151 }
1152 
1153 static const struct ethtool_ops fm10k_ethtool_ops = {
1154         .get_strings            = fm10k_get_strings,
1155         .get_sset_count         = fm10k_get_sset_count,
1156         .get_ethtool_stats      = fm10k_get_ethtool_stats,
1157         .get_drvinfo            = fm10k_get_drvinfo,
1158         .get_link               = ethtool_op_get_link,
1159         .get_pauseparam         = fm10k_get_pauseparam,
1160         .set_pauseparam         = fm10k_set_pauseparam,
1161         .get_msglevel           = fm10k_get_msglevel,
1162         .set_msglevel           = fm10k_set_msglevel,
1163         .get_ringparam          = fm10k_get_ringparam,
1164         .set_ringparam          = fm10k_set_ringparam,
1165         .get_coalesce           = fm10k_get_coalesce,
1166         .set_coalesce           = fm10k_set_coalesce,
1167         .get_rxnfc              = fm10k_get_rxnfc,
1168         .set_rxnfc              = fm10k_set_rxnfc,
1169         .get_regs               = fm10k_get_regs,
1170         .get_regs_len           = fm10k_get_regs_len,
1171         .self_test              = fm10k_self_test,
1172         .get_priv_flags         = fm10k_get_priv_flags,
1173         .set_priv_flags         = fm10k_set_priv_flags,
1174         .get_rxfh_indir_size    = fm10k_get_reta_size,
1175         .get_rxfh_key_size      = fm10k_get_rssrk_size,
1176         .get_rxfh               = fm10k_get_rssh,
1177         .set_rxfh               = fm10k_set_rssh,
1178         .get_channels           = fm10k_get_channels,
1179         .set_channels           = fm10k_set_channels,
1180         .get_ts_info            = ethtool_op_get_ts_info,
1181 };
1182 
1183 void fm10k_set_ethtool_ops(struct net_device *dev)
1184 {
1185         dev->ethtool_ops = &fm10k_ethtool_ops;
1186 }

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