ceph/src/seastar/dpdk/kernel/linux/kni/ethtool/igb/igb_param.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*******************************************************************************
   3
   4   Intel(R) Gigabit Ethernet Linux driver
   5   Copyright(c) 2007-2013 Intel Corporation.
   6
   7   Contact Information:
   8   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
   9   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  10
  11 *******************************************************************************/
  12
  13
  14 #include <linux/netdevice.h>
  15
  16 #include "igb.h"
  17
  18 /* This is the only thing that needs to be changed to adjust the
  19  * maximum number of ports that the driver can manage.
  20  */
  21
  22 #define IGB_MAX_NIC 32
  23
  24 #define OPTION_UNSET   -1
  25 #define OPTION_DISABLED 0
  26 #define OPTION_ENABLED  1
  27 #define MAX_NUM_LIST_OPTS 15
  28
  29 /* All parameters are treated the same, as an integer array of values.
  30  * This macro just reduces the need to repeat the same declaration code
  31  * over and over (plus this helps to avoid typo bugs).
  32  */
  33
  34 #define IGB_PARAM_INIT { [0 ... IGB_MAX_NIC] = OPTION_UNSET }
  35 #ifndef module_param_array
  36 /* Module Parameters are always initialized to -1, so that the driver
  37  * can tell the difference between no user specified value or the
  38  * user asking for the default value.
  39  * The true default values are loaded in when igb_check_options is called.
  40  *
  41  * This is a GCC extension to ANSI C.
  42  * See the item "Labeled Elements in Initializers" in the section
  43  * "Extensions to the C Language Family" of the GCC documentation.
  44  */
  45
  46 #define IGB_PARAM(X, desc) \
  47         static const int X[IGB_MAX_NIC+1] = IGB_PARAM_INIT; \
  48         MODULE_PARM(X, "1-" __MODULE_STRING(IGB_MAX_NIC) "i"); \
  49         MODULE_PARM_DESC(X, desc);
  50 #else
  51 #define IGB_PARAM(X, desc) \
  52         static int X[IGB_MAX_NIC+1] = IGB_PARAM_INIT; \
  53         static unsigned int num_##X; \
  54         module_param_array_named(X, X, int, &num_##X, 0); \
  55         MODULE_PARM_DESC(X, desc);
  56 #endif
  57
  58 /* Interrupt Throttle Rate (interrupts/sec)
  59  *
  60  * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative)
  61  */
  62 IGB_PARAM(InterruptThrottleRate,
  63           "Maximum interrupts per second, per vector, (max 100000), default 3=adaptive");
  64 #define DEFAULT_ITR                    3
  65 #define MAX_ITR                   100000
  66 /* #define MIN_ITR                      120 */
  67 #define MIN_ITR                      0
  68 /* IntMode (Interrupt Mode)
  69  *
  70  * Valid Range: 0 - 2
  71  *
  72  * Default Value: 2 (MSI-X)
  73  */
  74 IGB_PARAM(IntMode, "Change Interrupt Mode (0=Legacy, 1=MSI, 2=MSI-X), default 2");
  75 #define MAX_INTMODE                    IGB_INT_MODE_MSIX
  76 #define MIN_INTMODE                    IGB_INT_MODE_LEGACY
  77
  78 IGB_PARAM(Node, "set the starting node to allocate memory on, default -1");
  79
  80 /* LLIPort (Low Latency Interrupt TCP Port)
  81  *
  82  * Valid Range: 0 - 65535
  83  *
  84  * Default Value: 0 (disabled)
  85  */
  86 IGB_PARAM(LLIPort, "Low Latency Interrupt TCP Port (0-65535), default 0=off");
  87
  88 #define DEFAULT_LLIPORT                0
  89 #define MAX_LLIPORT               0xFFFF
  90 #define MIN_LLIPORT                    0
  91
  92 /* LLIPush (Low Latency Interrupt on TCP Push flag)
  93  *
  94  * Valid Range: 0, 1
  95  *
  96  * Default Value: 0 (disabled)
  97  */
  98 IGB_PARAM(LLIPush, "Low Latency Interrupt on TCP Push flag (0,1), default 0=off");
  99
 100 #define DEFAULT_LLIPUSH                0
 101 #define MAX_LLIPUSH                    1
 102 #define MIN_LLIPUSH                    0
 103
 104 /* LLISize (Low Latency Interrupt on Packet Size)
 105  *
 106  * Valid Range: 0 - 1500
 107  *
 108  * Default Value: 0 (disabled)
 109  */
 110 IGB_PARAM(LLISize, "Low Latency Interrupt on Packet Size (0-1500), default 0=off");
 111
 112 #define DEFAULT_LLISIZE                0
 113 #define MAX_LLISIZE                 1500
 114 #define MIN_LLISIZE                    0
 115
 116 /* RSS (Enable RSS multiqueue receive)
 117  *
 118  * Valid Range: 0 - 8
 119  *
 120  * Default Value:  1
 121  */
 122 IGB_PARAM(RSS, "Number of Receive-Side Scaling Descriptor Queues (0-8), default 1, 0=number of cpus");
 123
 124 #define DEFAULT_RSS       1
 125 #define MAX_RSS           8
 126 #define MIN_RSS           0
 127
 128 /* VMDQ (Enable VMDq multiqueue receive)
 129  *
 130  * Valid Range: 0 - 8
 131  *
 132  * Default Value:  0
 133  */
 134 IGB_PARAM(VMDQ, "Number of Virtual Machine Device Queues: 0-1 = disable, 2-8 enable, default 0");
 135
 136 #define DEFAULT_VMDQ      0
 137 #define MAX_VMDQ          MAX_RSS
 138 #define MIN_VMDQ          0
 139
 140 /* max_vfs (Enable SR-IOV VF devices)
 141  *
 142  * Valid Range: 0 - 7
 143  *
 144  * Default Value:  0
 145  */
 146 IGB_PARAM(max_vfs, "Number of Virtual Functions: 0 = disable, 1-7 enable, default 0");
 147
 148 #define DEFAULT_SRIOV     0
 149 #define MAX_SRIOV         7
 150 #define MIN_SRIOV         0
 151
 152 /* MDD (Enable Malicious Driver Detection)
 153  *
 154  * Only available when SR-IOV is enabled - max_vfs is greater than 0
 155  *
 156  * Valid Range: 0, 1
 157  *
 158  * Default Value:  1
 159  */
 160 IGB_PARAM(MDD, "Malicious Driver Detection (0/1), default 1 = enabled. "
 161           "Only available when max_vfs is greater than 0");
 162
 163 #ifdef DEBUG
 164
 165 /* Disable Hardware Reset on Tx Hang
 166  *
 167  * Valid Range: 0, 1
 168  *
 169  * Default Value: 0 (disabled, i.e. h/w will reset)
 170  */
 171 IGB_PARAM(DisableHwReset, "Disable reset of hardware on Tx hang");
 172
 173 /* Dump Transmit and Receive buffers
 174  *
 175  * Valid Range: 0, 1
 176  *
 177  * Default Value: 0
 178  */
 179 IGB_PARAM(DumpBuffers, "Dump Tx/Rx buffers on Tx hang or by request");
 180
 181 #endif /* DEBUG */
 182
 183 /* QueuePairs (Enable TX/RX queue pairs for interrupt handling)
 184  *
 185  * Valid Range: 0 - 1
 186  *
 187  * Default Value:  1
 188  */
 189 IGB_PARAM(QueuePairs, "Enable Tx/Rx queue pairs for interrupt handling (0,1), default 1=on");
 190
 191 #define DEFAULT_QUEUE_PAIRS           1
 192 #define MAX_QUEUE_PAIRS               1
 193 #define MIN_QUEUE_PAIRS               0
 194
 195 /* Enable/disable EEE (a.k.a. IEEE802.3az)
 196  *
 197  * Valid Range: 0, 1
 198  *
 199  * Default Value: 1
 200  */
 201  IGB_PARAM(EEE, "Enable/disable on parts that support the feature");
 202
 203 /* Enable/disable DMA Coalescing
 204  *
 205  * Valid Values: 0(off), 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000,
 206  * 9000, 10000(msec), 250(usec), 500(usec)
 207  *
 208  * Default Value: 0
 209  */
 210  IGB_PARAM(DMAC, "Disable or set latency for DMA Coalescing ((0=off, 1000-10000(msec), 250, 500 (usec))");
 211
 212 #ifndef IGB_NO_LRO
 213 /* Enable/disable Large Receive Offload
 214  *
 215  * Valid Values: 0(off), 1(on)
 216  *
 217  * Default Value: 0
 218  */
 219  IGB_PARAM(LRO, "Large Receive Offload (0,1), default 0=off");
 220
 221 #endif
 222 struct igb_opt_list {
 223         int i;
 224         char *str;
 225 };
 226 struct igb_option {
 227         enum { enable_option, range_option, list_option } type;
 228         const char *name;
 229         const char *err;
 230         int def;
 231         union {
 232                 struct { /* range_option info */
 233                         int min;
 234                         int max;
 235                 } r;
 236                 struct { /* list_option info */
 237                         int nr;
 238                         struct igb_opt_list *p;
 239                 } l;
 240         } arg;
 241 };
 242
 243 static int igb_validate_option(unsigned int *value,
 244                                struct igb_option *opt,
 245                                struct igb_adapter *adapter)
 246 {
 247         if (*value == OPTION_UNSET) {
 248                 *value = opt->def;
 249                 return 0;
 250         }
 251
 252         switch (opt->type) {
 253         case enable_option:
 254                 switch (*value) {
 255                 case OPTION_ENABLED:
 256                         DPRINTK(PROBE, INFO, "%s Enabled\n", opt->name);
 257                         return 0;
 258                 case OPTION_DISABLED:
 259                         DPRINTK(PROBE, INFO, "%s Disabled\n", opt->name);
 260                         return 0;
 261                 }
 262                 break;
 263         case range_option:
 264                 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 265                         DPRINTK(PROBE, INFO,
 266                                         "%s set to %d\n", opt->name, *value);
 267                         return 0;
 268                 }
 269                 break;
 270         case list_option: {
 271                 int i;
 272                 struct igb_opt_list *ent;
 273
 274                 for (i = 0; i < opt->arg.l.nr; i++) {
 275                         ent = &opt->arg.l.p[i];
 276                         if (*value == ent->i) {
 277                                 if (ent->str[0] != '\0')
 278                                         DPRINTK(PROBE, INFO, "%s\n", ent->str);
 279                                 return 0;
 280                         }
 281                 }
 282         }
 283                 break;
 284         default:
 285                 BUG();
 286         }
 287
 288         DPRINTK(PROBE, INFO, "Invalid %s value specified (%d) %s\n",
 289                opt->name, *value, opt->err);
 290         *value = opt->def;
 291         return -1;
 292 }
 293
 294 /**
 295  * igb_check_options - Range Checking for Command Line Parameters
 296  * @adapter: board private structure
 297  *
 298  * This routine checks all command line parameters for valid user
 299  * input.  If an invalid value is given, or if no user specified
 300  * value exists, a default value is used.  The final value is stored
 301  * in a variable in the adapter structure.
 302  **/
 303
 304 void igb_check_options(struct igb_adapter *adapter)
 305 {
 306         int bd = adapter->bd_number;
 307         struct e1000_hw *hw = &adapter->hw;
 308
 309         if (bd >= IGB_MAX_NIC) {
 310                 DPRINTK(PROBE, NOTICE,
 311                        "Warning: no configuration for board #%d\n", bd);
 312                 DPRINTK(PROBE, NOTICE, "Using defaults for all values\n");
 313 #ifndef module_param_array
 314                 bd = IGB_MAX_NIC;
 315 #endif
 316         }
 317
 318         { /* Interrupt Throttling Rate */
 319                 struct igb_option opt = {
 320                         .type = range_option,
 321                         .name = "Interrupt Throttling Rate (ints/sec)",
 322                         .err  = "using default of " __MODULE_STRING(DEFAULT_ITR),
 323                         .def  = DEFAULT_ITR,
 324                         .arg  = { .r = { .min = MIN_ITR,
 325                                          .max = MAX_ITR } }
 326                 };
 327
 328 #ifdef module_param_array
 329                 if (num_InterruptThrottleRate > bd) {
 330 #endif
 331                         unsigned int itr = InterruptThrottleRate[bd];
 332
 333                         switch (itr) {
 334                         case 0:
 335                                 DPRINTK(PROBE, INFO, "%s turned off\n",
 336                                         opt.name);
 337                                 if (hw->mac.type >= e1000_i350)
 338                                         adapter->dmac = IGB_DMAC_DISABLE;
 339                                 adapter->rx_itr_setting = itr;
 340                                 break;
 341                         case 1:
 342                                 DPRINTK(PROBE, INFO, "%s set to dynamic mode\n",
 343                                         opt.name);
 344                                 adapter->rx_itr_setting = itr;
 345                                 break;
 346                         case 3:
 347                                 DPRINTK(PROBE, INFO,
 348                                         "%s set to dynamic conservative mode\n",
 349                                         opt.name);
 350                                 adapter->rx_itr_setting = itr;
 351                                 break;
 352                         default:
 353                                 igb_validate_option(&itr, &opt, adapter);
 354                                 /* Save the setting, because the dynamic bits
 355                                  * change itr.  In case of invalid user value,
 356                                  * default to conservative mode, else need to
 357                                  * clear the lower two bits because they are
 358                                  * used as control */
 359                                 if (itr == 3) {
 360                                         adapter->rx_itr_setting = itr;
 361                                 } else {
 362                                         adapter->rx_itr_setting = 1000000000 /
 363                                                                   (itr * 256);
 364                                         adapter->rx_itr_setting &= ~3;
 365                                 }
 366                                 break;
 367                         }
 368 #ifdef module_param_array
 369                 } else {
 370                         adapter->rx_itr_setting = opt.def;
 371                 }
 372 #endif
 373                 adapter->tx_itr_setting = adapter->rx_itr_setting;
 374         }
 375         { /* Interrupt Mode */
 376                 struct igb_option opt = {
 377                         .type = range_option,
 378                         .name = "Interrupt Mode",
 379                         .err  = "defaulting to 2 (MSI-X)",
 380                         .def  = IGB_INT_MODE_MSIX,
 381                         .arg  = { .r = { .min = MIN_INTMODE,
 382                                          .max = MAX_INTMODE } }
 383                 };
 384
 385 #ifdef module_param_array
 386                 if (num_IntMode > bd) {
 387 #endif
 388                         unsigned int int_mode = IntMode[bd];
 389                         igb_validate_option(&int_mode, &opt, adapter);
 390                         adapter->int_mode = int_mode;
 391 #ifdef module_param_array
 392                 } else {
 393                         adapter->int_mode = opt.def;
 394                 }
 395 #endif
 396         }
 397         { /* Low Latency Interrupt TCP Port */
 398                 struct igb_option opt = {
 399                         .type = range_option,
 400                         .name = "Low Latency Interrupt TCP Port",
 401                         .err  = "using default of " __MODULE_STRING(DEFAULT_LLIPORT),
 402                         .def  = DEFAULT_LLIPORT,
 403                         .arg  = { .r = { .min = MIN_LLIPORT,
 404                                          .max = MAX_LLIPORT } }
 405                 };
 406
 407 #ifdef module_param_array
 408                 if (num_LLIPort > bd) {
 409 #endif
 410                         adapter->lli_port = LLIPort[bd];
 411                         if (adapter->lli_port) {
 412                                 igb_validate_option(&adapter->lli_port, &opt,
 413                                         adapter);
 414                         } else {
 415                                 DPRINTK(PROBE, INFO, "%s turned off\n",
 416                                         opt.name);
 417                         }
 418 #ifdef module_param_array
 419                 } else {
 420                         adapter->lli_port = opt.def;
 421                 }
 422 #endif
 423         }
 424         { /* Low Latency Interrupt on Packet Size */
 425                 struct igb_option opt = {
 426                         .type = range_option,
 427                         .name = "Low Latency Interrupt on Packet Size",
 428                         .err  = "using default of " __MODULE_STRING(DEFAULT_LLISIZE),
 429                         .def  = DEFAULT_LLISIZE,
 430                         .arg  = { .r = { .min = MIN_LLISIZE,
 431                                          .max = MAX_LLISIZE } }
 432                 };
 433
 434 #ifdef module_param_array
 435                 if (num_LLISize > bd) {
 436 #endif
 437                         adapter->lli_size = LLISize[bd];
 438                         if (adapter->lli_size) {
 439                                 igb_validate_option(&adapter->lli_size, &opt,
 440                                         adapter);
 441                         } else {
 442                                 DPRINTK(PROBE, INFO, "%s turned off\n",
 443                                         opt.name);
 444                         }
 445 #ifdef module_param_array
 446                 } else {
 447                         adapter->lli_size = opt.def;
 448                 }
 449 #endif
 450         }
 451         { /* Low Latency Interrupt on TCP Push flag */
 452                 struct igb_option opt = {
 453                         .type = enable_option,
 454                         .name = "Low Latency Interrupt on TCP Push flag",
 455                         .err  = "defaulting to Disabled",
 456                         .def  = OPTION_DISABLED
 457                 };
 458
 459 #ifdef module_param_array
 460                 if (num_LLIPush > bd) {
 461 #endif
 462                         unsigned int lli_push = LLIPush[bd];
 463                         igb_validate_option(&lli_push, &opt, adapter);
 464                         adapter->flags |= lli_push ? IGB_FLAG_LLI_PUSH : 0;
 465 #ifdef module_param_array
 466                 } else {
 467                         adapter->flags |= opt.def ? IGB_FLAG_LLI_PUSH : 0;
 468                 }
 469 #endif
 470         }
 471         { /* SRIOV - Enable SR-IOV VF devices */
 472                 struct igb_option opt = {
 473                         .type = range_option,
 474                         .name = "max_vfs - SR-IOV VF devices",
 475                         .err  = "using default of " __MODULE_STRING(DEFAULT_SRIOV),
 476                         .def  = DEFAULT_SRIOV,
 477                         .arg  = { .r = { .min = MIN_SRIOV,
 478                                          .max = MAX_SRIOV } }
 479                 };
 480
 481 #ifdef module_param_array
 482                 if (num_max_vfs > bd) {
 483 #endif
 484                         adapter->vfs_allocated_count = max_vfs[bd];
 485                         igb_validate_option(&adapter->vfs_allocated_count, &opt, adapter);
 486
 487 #ifdef module_param_array
 488                 } else {
 489                         adapter->vfs_allocated_count = opt.def;
 490                 }
 491 #endif
 492                 if (adapter->vfs_allocated_count) {
 493                         switch (hw->mac.type) {
 494                         case e1000_82575:
 495                         case e1000_82580:
 496                         case e1000_i210:
 497                         case e1000_i211:
 498                         case e1000_i354:
 499                                 adapter->vfs_allocated_count = 0;
 500                                 DPRINTK(PROBE, INFO, "SR-IOV option max_vfs not supported.\n");
 501                         default:
 502                                 break;
 503                         }
 504                 }
 505         }
 506         { /* VMDQ - Enable VMDq multiqueue receive */
 507                 struct igb_option opt = {
 508                         .type = range_option,
 509                         .name = "VMDQ - VMDq multiqueue queue count",
 510                         .err  = "using default of " __MODULE_STRING(DEFAULT_VMDQ),
 511                         .def  = DEFAULT_VMDQ,
 512                         .arg  = { .r = { .min = MIN_VMDQ,
 513                                          .max = (MAX_VMDQ - adapter->vfs_allocated_count) } }
 514                 };
 515                 if ((hw->mac.type != e1000_i210) ||
 516                     (hw->mac.type != e1000_i211)) {
 517 #ifdef module_param_array
 518                 if (num_VMDQ > bd) {
 519 #endif
 520                         adapter->vmdq_pools = (VMDQ[bd] == 1 ? 0 : VMDQ[bd]);
 521                         if (adapter->vfs_allocated_count && !adapter->vmdq_pools) {
 522                                 DPRINTK(PROBE, INFO, "Enabling SR-IOV requires VMDq be set to at least 1\n");
 523                                 adapter->vmdq_pools = 1;
 524                         }
 525                         igb_validate_option(&adapter->vmdq_pools, &opt, adapter);
 526
 527 #ifdef module_param_array
 528                 } else {
 529                         if (!adapter->vfs_allocated_count)
 530                                 adapter->vmdq_pools = (opt.def == 1 ? 0 : opt.def);
 531                         else
 532                                 adapter->vmdq_pools = 1;
 533                 }
 534 #endif
 535 #ifdef CONFIG_IGB_VMDQ_NETDEV
 536                 if (hw->mac.type == e1000_82575 && adapter->vmdq_pools) {
 537                         DPRINTK(PROBE, INFO, "VMDq not supported on this part.\n");
 538                         adapter->vmdq_pools = 0;
 539                 }
 540 #endif
 541
 542         } else {
 543                 DPRINTK(PROBE, INFO, "VMDq option is not supported.\n");
 544                 adapter->vmdq_pools = opt.def;
 545         }
 546         }
 547         { /* RSS - Enable RSS multiqueue receives */
 548                 struct igb_option opt = {
 549                         .type = range_option,
 550                         .name = "RSS - RSS multiqueue receive count",
 551                         .err  = "using default of " __MODULE_STRING(DEFAULT_RSS),
 552                         .def  = DEFAULT_RSS,
 553                         .arg  = { .r = { .min = MIN_RSS,
 554                                          .max = MAX_RSS } }
 555                 };
 556
 557                 switch (hw->mac.type) {
 558                 case e1000_82575:
 559 #ifndef CONFIG_IGB_VMDQ_NETDEV
 560                         if (!!adapter->vmdq_pools) {
 561                                 if (adapter->vmdq_pools <= 2) {
 562                                         if (adapter->vmdq_pools == 2)
 563                                                 opt.arg.r.max = 3;
 564                                 } else {
 565                                         opt.arg.r.max = 1;
 566                                 }
 567                         } else {
 568                                 opt.arg.r.max = 4;
 569                         }
 570 #else
 571                         opt.arg.r.max = !!adapter->vmdq_pools ? 1 : 4;
 572 #endif /* CONFIG_IGB_VMDQ_NETDEV */
 573                         break;
 574                 case e1000_i210:
 575                         opt.arg.r.max = 4;
 576                         break;
 577                 case e1000_i211:
 578                         opt.arg.r.max = 2;
 579                         break;
 580                 case e1000_82576:
 581 #ifndef CONFIG_IGB_VMDQ_NETDEV
 582                         if (!!adapter->vmdq_pools)
 583                                 opt.arg.r.max = 2;
 584                         break;
 585 #endif /* CONFIG_IGB_VMDQ_NETDEV */
 586                 case e1000_82580:
 587                 case e1000_i350:
 588                 case e1000_i354:
 589                 default:
 590                         if (!!adapter->vmdq_pools)
 591                                 opt.arg.r.max = 1;
 592                         break;
 593                 }
 594
 595                 if (adapter->int_mode != IGB_INT_MODE_MSIX) {
 596                         DPRINTK(PROBE, INFO, "RSS is not supported when in MSI/Legacy Interrupt mode, %s\n",
 597                                 opt.err);
 598                         opt.arg.r.max = 1;
 599                 }
 600
 601 #ifdef module_param_array
 602                 if (num_RSS > bd) {
 603 #endif
 604                         adapter->rss_queues = RSS[bd];
 605                         switch (adapter->rss_queues) {
 606                         case 1:
 607                                 break;
 608                         default:
 609                                 igb_validate_option(&adapter->rss_queues, &opt, adapter);
 610                                 if (adapter->rss_queues)
 611                                         break;
 612                         case 0:
 613                                 adapter->rss_queues = min_t(u32, opt.arg.r.max, num_online_cpus());
 614                                 break;
 615                         }
 616 #ifdef module_param_array
 617                 } else {
 618                         adapter->rss_queues = opt.def;
 619                 }
 620 #endif
 621         }
 622         { /* QueuePairs - Enable Tx/Rx queue pairs for interrupt handling */
 623                 struct igb_option opt = {
 624                         .type = enable_option,
 625                         .name = "QueuePairs - Tx/Rx queue pairs for interrupt handling",
 626                         .err  = "defaulting to Enabled",
 627                         .def  = OPTION_ENABLED
 628                 };
 629 #ifdef module_param_array
 630                 if (num_QueuePairs > bd) {
 631 #endif
 632                         unsigned int qp = QueuePairs[bd];
 633                         /*
 634                          * We must enable queue pairs if the number of queues
 635                          * exceeds the number of available interrupts. We are
 636                          * limited to 10, or 3 per unallocated vf. On I210 and
 637                          * I211 devices, we are limited to 5 interrupts.
 638                          * However, since I211 only supports 2 queues, we do not
 639                          * need to check and override the user option.
 640                          */
 641                         if (qp == OPTION_DISABLED) {
 642                                 if (adapter->rss_queues > 4)
 643                                         qp = OPTION_ENABLED;
 644
 645                                 if (adapter->vmdq_pools > 4)
 646                                         qp = OPTION_ENABLED;
 647
 648                                 if (adapter->rss_queues > 1 &&
 649                                     (adapter->vmdq_pools > 3 ||
 650                                      adapter->vfs_allocated_count > 6))
 651                                         qp = OPTION_ENABLED;
 652
 653                                 if (hw->mac.type == e1000_i210 &&
 654                                     adapter->rss_queues > 2)
 655                                         qp = OPTION_ENABLED;
 656
 657                                 if (qp == OPTION_ENABLED)
 658                                         DPRINTK(PROBE, INFO, "Number of queues exceeds available interrupts, %s\n",
 659                                                 opt.err);
 660                         }
 661                         igb_validate_option(&qp, &opt, adapter);
 662                         adapter->flags |= qp ? IGB_FLAG_QUEUE_PAIRS : 0;
 663 #ifdef module_param_array
 664                 } else {
 665                         adapter->flags |= opt.def ? IGB_FLAG_QUEUE_PAIRS : 0;
 666                 }
 667 #endif
 668         }
 669         { /* EEE -  Enable EEE for capable adapters */
 670
 671                 if (hw->mac.type >= e1000_i350) {
 672                         struct igb_option opt = {
 673                                 .type = enable_option,
 674                                 .name = "EEE Support",
 675                                 .err  = "defaulting to Enabled",
 676                                 .def  = OPTION_ENABLED
 677                         };
 678 #ifdef module_param_array
 679                         if (num_EEE > bd) {
 680 #endif
 681                                 unsigned int eee = EEE[bd];
 682                                 igb_validate_option(&eee, &opt, adapter);
 683                                 adapter->flags |= eee ? IGB_FLAG_EEE : 0;
 684                                 if (eee)
 685                                         hw->dev_spec._82575.eee_disable = false;
 686                                 else
 687                                         hw->dev_spec._82575.eee_disable = true;
 688
 689 #ifdef module_param_array
 690                         } else {
 691                                 adapter->flags |= opt.def ? IGB_FLAG_EEE : 0;
 692                                 if (adapter->flags & IGB_FLAG_EEE)
 693                                         hw->dev_spec._82575.eee_disable = false;
 694                                 else
 695                                         hw->dev_spec._82575.eee_disable = true;
 696                         }
 697 #endif
 698                 }
 699         }
 700         { /* DMAC -  Enable DMA Coalescing for capable adapters */
 701
 702                 if (hw->mac.type >= e1000_i350) {
 703                         struct igb_opt_list list [] = {
 704                                 { IGB_DMAC_DISABLE, "DMAC Disable"},
 705                                 { IGB_DMAC_MIN, "DMAC 250 usec"},
 706                                 { IGB_DMAC_500, "DMAC 500 usec"},
 707                                 { IGB_DMAC_EN_DEFAULT, "DMAC 1000 usec"},
 708                                 { IGB_DMAC_2000, "DMAC 2000 usec"},
 709                                 { IGB_DMAC_3000, "DMAC 3000 usec"},
 710                                 { IGB_DMAC_4000, "DMAC 4000 usec"},
 711                                 { IGB_DMAC_5000, "DMAC 5000 usec"},
 712                                 { IGB_DMAC_6000, "DMAC 6000 usec"},
 713                                 { IGB_DMAC_7000, "DMAC 7000 usec"},
 714                                 { IGB_DMAC_8000, "DMAC 8000 usec"},
 715                                 { IGB_DMAC_9000, "DMAC 9000 usec"},
 716                                 { IGB_DMAC_MAX, "DMAC 10000 usec"}
 717                         };
 718                         struct igb_option opt = {
 719                                 .type = list_option,
 720                                 .name = "DMA Coalescing",
 721                                 .err  = "using default of "__MODULE_STRING(IGB_DMAC_DISABLE),
 722                                 .def  = IGB_DMAC_DISABLE,
 723                                 .arg = { .l = { .nr = 13,
 724                                                 .p = list
 725                                         }
 726                                 }
 727                         };
 728 #ifdef module_param_array
 729                         if (num_DMAC > bd) {
 730 #endif
 731                                 unsigned int dmac = DMAC[bd];
 732                                 if (adapter->rx_itr_setting == IGB_DMAC_DISABLE)
 733                                         dmac = IGB_DMAC_DISABLE;
 734                                 igb_validate_option(&dmac, &opt, adapter);
 735                                 switch (dmac) {
 736                                 case IGB_DMAC_DISABLE:
 737                                         adapter->dmac = dmac;
 738                                         break;
 739                                 case IGB_DMAC_MIN:
 740                                         adapter->dmac = dmac;
 741                                         break;
 742                                 case IGB_DMAC_500:
 743                                         adapter->dmac = dmac;
 744                                         break;
 745                                 case IGB_DMAC_EN_DEFAULT:
 746                                         adapter->dmac = dmac;
 747                                         break;
 748                                 case IGB_DMAC_2000:
 749                                         adapter->dmac = dmac;
 750                                         break;
 751                                 case IGB_DMAC_3000:
 752                                         adapter->dmac = dmac;
 753                                         break;
 754                                 case IGB_DMAC_4000:
 755                                         adapter->dmac = dmac;
 756                                         break;
 757                                 case IGB_DMAC_5000:
 758                                         adapter->dmac = dmac;
 759                                         break;
 760                                 case IGB_DMAC_6000:
 761                                         adapter->dmac = dmac;
 762                                         break;
 763                                 case IGB_DMAC_7000:
 764                                         adapter->dmac = dmac;
 765                                         break;
 766                                 case IGB_DMAC_8000:
 767                                         adapter->dmac = dmac;
 768                                         break;
 769                                 case IGB_DMAC_9000:
 770                                         adapter->dmac = dmac;
 771                                         break;
 772                                 case IGB_DMAC_MAX:
 773                                         adapter->dmac = dmac;
 774                                         break;
 775                                 default:
 776                                         adapter->dmac = opt.def;
 777                                         DPRINTK(PROBE, INFO,
 778                                         "Invalid DMAC setting, "
 779                                         "resetting DMAC to %d\n", opt.def);
 780                                 }
 781 #ifdef module_param_array
 782                         } else
 783                                 adapter->dmac = opt.def;
 784 #endif
 785                 }
 786         }
 787 #ifndef IGB_NO_LRO
 788         { /* LRO - Enable Large Receive Offload */
 789                 struct igb_option opt = {
 790                         .type = enable_option,
 791                         .name = "LRO - Large Receive Offload",
 792                         .err  = "defaulting to Disabled",
 793                         .def  = OPTION_DISABLED
 794                 };
 795                 struct net_device *netdev = adapter->netdev;
 796 #ifdef module_param_array
 797                 if (num_LRO > bd) {
 798 #endif
 799                         unsigned int lro = LRO[bd];
 800                         igb_validate_option(&lro, &opt, adapter);
 801                         netdev->features |= lro ? NETIF_F_LRO : 0;
 802 #ifdef module_param_array
 803                 } else if (opt.def == OPTION_ENABLED) {
 804                         netdev->features |= NETIF_F_LRO;
 805                 }
 806 #endif
 807         }
 808 #endif /* IGB_NO_LRO */
 809         { /* MDD - Enable Malicious Driver Detection. Only available when
 810              SR-IOV is enabled. */
 811                 struct igb_option opt = {
 812                         .type = enable_option,
 813                         .name = "Malicious Driver Detection",
 814                         .err  = "defaulting to 1",
 815                         .def  = OPTION_ENABLED,
 816                         .arg  = { .r = { .min = OPTION_DISABLED,
 817                                          .max = OPTION_ENABLED } }
 818                 };
 819
 820 #ifdef module_param_array
 821                 if (num_MDD > bd) {
 822 #endif
 823                         adapter->mdd = MDD[bd];
 824                         igb_validate_option((uint *)&adapter->mdd, &opt,
 825                                             adapter);
 826 #ifdef module_param_array
 827                 } else {
 828                         adapter->mdd = opt.def;
 829                 }
 830 #endif
 831         }
 832 }