drivers/net/wireless/libertas/mesh.c

   1 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   2
   3 #include <linux/delay.h>
   4 #include <linux/etherdevice.h>
   5 #include <linux/hardirq.h>
   6 #include <linux/netdevice.h>
   7 #include <linux/if_ether.h>
   8 #include <linux/if_arp.h>
   9 #include <linux/kthread.h>
  10 #include <linux/kfifo.h>
  11 #include <net/cfg80211.h>
  12
  13 #include "mesh.h"
  14 #include "decl.h"
  15 #include "cmd.h"
  16
  17
  18 static int lbs_add_mesh(struct lbs_private *priv);
  19
  20 /***************************************************************************
  21  * Mesh command handling
  22  */
  23
  24 static int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action,
  25                     struct cmd_ds_mesh_access *cmd)
  26 {
  27         int ret;
  28
  29         lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
  30
  31         cmd->hdr.command = cpu_to_le16(CMD_MESH_ACCESS);
  32         cmd->hdr.size = cpu_to_le16(sizeof(*cmd));
  33         cmd->hdr.result = 0;
  34
  35         cmd->action = cpu_to_le16(cmd_action);
  36
  37         ret = lbs_cmd_with_response(priv, CMD_MESH_ACCESS, cmd);
  38
  39         lbs_deb_leave(LBS_DEB_CMD);
  40         return ret;
  41 }
  42
  43 static int __lbs_mesh_config_send(struct lbs_private *priv,
  44                                   struct cmd_ds_mesh_config *cmd,
  45                                   uint16_t action, uint16_t type)
  46 {
  47         int ret;
  48         u16 command = CMD_MESH_CONFIG_OLD;
  49
  50         lbs_deb_enter(LBS_DEB_CMD);
  51
  52         /*
  53          * Command id is 0xac for v10 FW along with mesh interface
  54          * id in bits 14-13-12.
  55          */
  56         if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
  57                 command = CMD_MESH_CONFIG |
  58                           (MESH_IFACE_ID << MESH_IFACE_BIT_OFFSET);
  59
  60         cmd->hdr.command = cpu_to_le16(command);
  61         cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_mesh_config));
  62         cmd->hdr.result = 0;
  63
  64         cmd->type = cpu_to_le16(type);
  65         cmd->action = cpu_to_le16(action);
  66
  67         ret = lbs_cmd_with_response(priv, command, cmd);
  68
  69         lbs_deb_leave(LBS_DEB_CMD);
  70         return ret;
  71 }
  72
  73 static int lbs_mesh_config_send(struct lbs_private *priv,
  74                          struct cmd_ds_mesh_config *cmd,
  75                          uint16_t action, uint16_t type)
  76 {
  77         int ret;
  78
  79         if (!(priv->fwcapinfo & FW_CAPINFO_PERSISTENT_CONFIG))
  80                 return -EOPNOTSUPP;
  81
  82         ret = __lbs_mesh_config_send(priv, cmd, action, type);
  83         return ret;
  84 }
  85
  86 /* This function is the CMD_MESH_CONFIG legacy function.  It only handles the
  87  * START and STOP actions.  The extended actions supported by CMD_MESH_CONFIG
  88  * are all handled by preparing a struct cmd_ds_mesh_config and passing it to
  89  * lbs_mesh_config_send.
  90  */
  91 static int lbs_mesh_config(struct lbs_private *priv, uint16_t action,
  92                 uint16_t chan)
  93 {
  94         struct cmd_ds_mesh_config cmd;
  95         struct mrvl_meshie *ie;
  96
  97         memset(&cmd, 0, sizeof(cmd));
  98         cmd.channel = cpu_to_le16(chan);
  99         ie = (struct mrvl_meshie *)cmd.data;
 100
 101         switch (action) {
 102         case CMD_ACT_MESH_CONFIG_START:
 103                 ie->id = WLAN_EID_VENDOR_SPECIFIC;
 104                 ie->val.oui[0] = 0x00;
 105                 ie->val.oui[1] = 0x50;
 106                 ie->val.oui[2] = 0x43;
 107                 ie->val.type = MARVELL_MESH_IE_TYPE;
 108                 ie->val.subtype = MARVELL_MESH_IE_SUBTYPE;
 109                 ie->val.version = MARVELL_MESH_IE_VERSION;
 110                 ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP;
 111                 ie->val.active_metric_id = MARVELL_MESH_METRIC_ID;
 112                 ie->val.mesh_capability = MARVELL_MESH_CAPABILITY;
 113                 ie->val.mesh_id_len = priv->mesh_ssid_len;
 114                 memcpy(ie->val.mesh_id, priv->mesh_ssid, priv->mesh_ssid_len);
 115                 ie->len = sizeof(struct mrvl_meshie_val) -
 116                         IEEE80211_MAX_SSID_LEN + priv->mesh_ssid_len;
 117                 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val));
 118                 break;
 119         case CMD_ACT_MESH_CONFIG_STOP:
 120                 break;
 121         default:
 122                 return -1;
 123         }
 124         lbs_deb_cmd("mesh config action %d type %x channel %d SSID %*pE\n",
 125                     action, priv->mesh_tlv, chan, priv->mesh_ssid_len,
 126                     priv->mesh_ssid);
 127
 128         return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv);
 129 }
 130
 131 int lbs_mesh_set_channel(struct lbs_private *priv, u8 channel)
 132 {
 133         priv->mesh_channel = channel;
 134         return lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, channel);
 135 }
 136
 137 static uint16_t lbs_mesh_get_channel(struct lbs_private *priv)
 138 {
 139         return priv->mesh_channel ?: 1;
 140 }
 141
 142 /***************************************************************************
 143  * Mesh sysfs support
 144  */
 145
 146 /*
 147  * Attributes exported through sysfs
 148  */
 149
 150 /**
 151  * lbs_anycast_get - Get function for sysfs attribute anycast_mask
 152  * @dev: the &struct device
 153  * @attr: device attributes
 154  * @buf: buffer where data will be returned
 155  */
 156 static ssize_t lbs_anycast_get(struct device *dev,
 157                 struct device_attribute *attr, char * buf)
 158 {
 159         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 160         struct cmd_ds_mesh_access mesh_access;
 161         int ret;
 162
 163         memset(&mesh_access, 0, sizeof(mesh_access));
 164
 165         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 166         if (ret)
 167                 return ret;
 168
 169         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 170 }
 171
 172 /**
 173  * lbs_anycast_set - Set function for sysfs attribute anycast_mask
 174  * @dev: the &struct device
 175  * @attr: device attributes
 176  * @buf: buffer that contains new attribute value
 177  * @count: size of buffer
 178  */
 179 static ssize_t lbs_anycast_set(struct device *dev,
 180                 struct device_attribute *attr, const char * buf, size_t count)
 181 {
 182         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 183         struct cmd_ds_mesh_access mesh_access;
 184         uint32_t datum;
 185         int ret;
 186
 187         memset(&mesh_access, 0, sizeof(mesh_access));
 188         sscanf(buf, "%x", &datum);
 189         mesh_access.data[0] = cpu_to_le32(datum);
 190
 191         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 192         if (ret)
 193                 return ret;
 194
 195         return strlen(buf);
 196 }
 197
 198 /**
 199  * lbs_prb_rsp_limit_get - Get function for sysfs attribute prb_rsp_limit
 200  * @dev: the &struct device
 201  * @attr: device attributes
 202  * @buf: buffer where data will be returned
 203  */
 204 static ssize_t lbs_prb_rsp_limit_get(struct device *dev,
 205                 struct device_attribute *attr, char *buf)
 206 {
 207         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 208         struct cmd_ds_mesh_access mesh_access;
 209         int ret;
 210         u32 retry_limit;
 211
 212         memset(&mesh_access, 0, sizeof(mesh_access));
 213         mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET);
 214
 215         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
 216                         &mesh_access);
 217         if (ret)
 218                 return ret;
 219
 220         retry_limit = le32_to_cpu(mesh_access.data[1]);
 221         return snprintf(buf, 10, "%d\n", retry_limit);
 222 }
 223
 224 /**
 225  * lbs_prb_rsp_limit_set - Set function for sysfs attribute prb_rsp_limit
 226  * @dev: the &struct device
 227  * @attr: device attributes
 228  * @buf: buffer that contains new attribute value
 229  * @count: size of buffer
 230  */
 231 static ssize_t lbs_prb_rsp_limit_set(struct device *dev,
 232                 struct device_attribute *attr, const char *buf, size_t count)
 233 {
 234         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 235         struct cmd_ds_mesh_access mesh_access;
 236         int ret;
 237         unsigned long retry_limit;
 238
 239         memset(&mesh_access, 0, sizeof(mesh_access));
 240         mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET);
 241
 242         if (!kstrtoul(buf, 10, &retry_limit))
 243                 return -ENOTSUPP;
 244         if (retry_limit > 15)
 245                 return -ENOTSUPP;
 246
 247         mesh_access.data[1] = cpu_to_le32(retry_limit);
 248
 249         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
 250                         &mesh_access);
 251         if (ret)
 252                 return ret;
 253
 254         return strlen(buf);
 255 }
 256
 257 /**
 258  * lbs_mesh_get - Get function for sysfs attribute mesh
 259  * @dev: the &struct device
 260  * @attr: device attributes
 261  * @buf: buffer where data will be returned
 262  */
 263 static ssize_t lbs_mesh_get(struct device *dev,
 264                 struct device_attribute *attr, char * buf)
 265 {
 266         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 267         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 268 }
 269
 270 /**
 271  * lbs_mesh_set - Set function for sysfs attribute mesh
 272  * @dev: the &struct device
 273  * @attr: device attributes
 274  * @buf: buffer that contains new attribute value
 275  * @count: size of buffer
 276  */
 277 static ssize_t lbs_mesh_set(struct device *dev,
 278                 struct device_attribute *attr, const char * buf, size_t count)
 279 {
 280         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 281         int enable;
 282
 283         sscanf(buf, "%x", &enable);
 284         enable = !!enable;
 285         if (enable == !!priv->mesh_dev)
 286                 return count;
 287
 288         if (enable)
 289                 lbs_add_mesh(priv);
 290         else
 291                 lbs_remove_mesh(priv);
 292
 293         return count;
 294 }
 295
 296 /*
 297  * lbs_mesh attribute to be exported per ethX interface
 298  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 299  */
 300 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 301
 302 /*
 303  * anycast_mask attribute to be exported per mshX interface
 304  * through sysfs (/sys/class/net/mshX/anycast_mask)
 305  */
 306 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 307
 308 /*
 309  * prb_rsp_limit attribute to be exported per mshX interface
 310  * through sysfs (/sys/class/net/mshX/prb_rsp_limit)
 311  */
 312 static DEVICE_ATTR(prb_rsp_limit, 0644, lbs_prb_rsp_limit_get,
 313                 lbs_prb_rsp_limit_set);
 314
 315 static struct attribute *lbs_mesh_sysfs_entries[] = {
 316         &dev_attr_anycast_mask.attr,
 317         &dev_attr_prb_rsp_limit.attr,
 318         NULL,
 319 };
 320
 321 static const struct attribute_group lbs_mesh_attr_group = {
 322         .attrs = lbs_mesh_sysfs_entries,
 323 };
 324
 325
 326 /***************************************************************************
 327  * Persistent configuration support
 328  */
 329
 330 static int mesh_get_default_parameters(struct device *dev,
 331                                        struct mrvl_mesh_defaults *defs)
 332 {
 333         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 334         struct cmd_ds_mesh_config cmd;
 335         int ret;
 336
 337         memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
 338         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_GET,
 339                                    CMD_TYPE_MESH_GET_DEFAULTS);
 340
 341         if (ret)
 342                 return -EOPNOTSUPP;
 343
 344         memcpy(defs, &cmd.data[0], sizeof(struct mrvl_mesh_defaults));
 345
 346         return 0;
 347 }
 348
 349 /**
 350  * bootflag_get - Get function for sysfs attribute bootflag
 351  * @dev: the &struct device
 352  * @attr: device attributes
 353  * @buf: buffer where data will be returned
 354  */
 355 static ssize_t bootflag_get(struct device *dev,
 356                             struct device_attribute *attr, char *buf)
 357 {
 358         struct mrvl_mesh_defaults defs;
 359         int ret;
 360
 361         ret = mesh_get_default_parameters(dev, &defs);
 362
 363         if (ret)
 364                 return ret;
 365
 366         return snprintf(buf, 12, "%d\n", le32_to_cpu(defs.bootflag));
 367 }
 368
 369 /**
 370  * bootflag_set - Set function for sysfs attribute bootflag
 371  * @dev: the &struct device
 372  * @attr: device attributes
 373  * @buf: buffer that contains new attribute value
 374  * @count: size of buffer
 375  */
 376 static ssize_t bootflag_set(struct device *dev, struct device_attribute *attr,
 377                             const char *buf, size_t count)
 378 {
 379         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 380         struct cmd_ds_mesh_config cmd;
 381         uint32_t datum;
 382         int ret;
 383
 384         memset(&cmd, 0, sizeof(cmd));
 385         ret = sscanf(buf, "%d", &datum);
 386         if ((ret != 1) || (datum > 1))
 387                 return -EINVAL;
 388
 389         *((__le32 *)&cmd.data[0]) = cpu_to_le32(!!datum);
 390         cmd.length = cpu_to_le16(sizeof(uint32_t));
 391         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 392                                    CMD_TYPE_MESH_SET_BOOTFLAG);
 393         if (ret)
 394                 return ret;
 395
 396         return strlen(buf);
 397 }
 398
 399 /**
 400  * boottime_get - Get function for sysfs attribute boottime
 401  * @dev: the &struct device
 402  * @attr: device attributes
 403  * @buf: buffer where data will be returned
 404  */
 405 static ssize_t boottime_get(struct device *dev,
 406                             struct device_attribute *attr, char *buf)
 407 {
 408         struct mrvl_mesh_defaults defs;
 409         int ret;
 410
 411         ret = mesh_get_default_parameters(dev, &defs);
 412
 413         if (ret)
 414                 return ret;
 415
 416         return snprintf(buf, 12, "%d\n", defs.boottime);
 417 }
 418
 419 /**
 420  * boottime_set - Set function for sysfs attribute boottime
 421  * @dev: the &struct device
 422  * @attr: device attributes
 423  * @buf: buffer that contains new attribute value
 424  * @count: size of buffer
 425  */
 426 static ssize_t boottime_set(struct device *dev,
 427                 struct device_attribute *attr, const char *buf, size_t count)
 428 {
 429         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 430         struct cmd_ds_mesh_config cmd;
 431         uint32_t datum;
 432         int ret;
 433
 434         memset(&cmd, 0, sizeof(cmd));
 435         ret = sscanf(buf, "%d", &datum);
 436         if ((ret != 1) || (datum > 255))
 437                 return -EINVAL;
 438
 439         /* A too small boot time will result in the device booting into
 440          * standalone (no-host) mode before the host can take control of it,
 441          * so the change will be hard to revert.  This may be a desired
 442          * feature (e.g to configure a very fast boot time for devices that
 443          * will not be attached to a host), but dangerous.  So I'm enforcing a
 444          * lower limit of 20 seconds:  remove and recompile the driver if this
 445          * does not work for you.
 446          */
 447         datum = (datum < 20) ? 20 : datum;
 448         cmd.data[0] = datum;
 449         cmd.length = cpu_to_le16(sizeof(uint8_t));
 450         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 451                                    CMD_TYPE_MESH_SET_BOOTTIME);
 452         if (ret)
 453                 return ret;
 454
 455         return strlen(buf);
 456 }
 457
 458 /**
 459  * channel_get - Get function for sysfs attribute channel
 460  * @dev: the &struct device
 461  * @attr: device attributes
 462  * @buf: buffer where data will be returned
 463  */
 464 static ssize_t channel_get(struct device *dev,
 465                            struct device_attribute *attr, char *buf)
 466 {
 467         struct mrvl_mesh_defaults defs;
 468         int ret;
 469
 470         ret = mesh_get_default_parameters(dev, &defs);
 471
 472         if (ret)
 473                 return ret;
 474
 475         return snprintf(buf, 12, "%d\n", le16_to_cpu(defs.channel));
 476 }
 477
 478 /**
 479  * channel_set - Set function for sysfs attribute channel
 480  * @dev: the &struct device
 481  * @attr: device attributes
 482  * @buf: buffer that contains new attribute value
 483  * @count: size of buffer
 484  */
 485 static ssize_t channel_set(struct device *dev, struct device_attribute *attr,
 486                            const char *buf, size_t count)
 487 {
 488         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 489         struct cmd_ds_mesh_config cmd;
 490         uint32_t datum;
 491         int ret;
 492
 493         memset(&cmd, 0, sizeof(cmd));
 494         ret = sscanf(buf, "%d", &datum);
 495         if (ret != 1 || datum < 1 || datum > 11)
 496                 return -EINVAL;
 497
 498         *((__le16 *)&cmd.data[0]) = cpu_to_le16(datum);
 499         cmd.length = cpu_to_le16(sizeof(uint16_t));
 500         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 501                                    CMD_TYPE_MESH_SET_DEF_CHANNEL);
 502         if (ret)
 503                 return ret;
 504
 505         return strlen(buf);
 506 }
 507
 508 /**
 509  * mesh_id_get - Get function for sysfs attribute mesh_id
 510  * @dev: the &struct device
 511  * @attr: device attributes
 512  * @buf: buffer where data will be returned
 513  */
 514 static ssize_t mesh_id_get(struct device *dev, struct device_attribute *attr,
 515                            char *buf)
 516 {
 517         struct mrvl_mesh_defaults defs;
 518         int ret;
 519
 520         ret = mesh_get_default_parameters(dev, &defs);
 521
 522         if (ret)
 523                 return ret;
 524
 525         if (defs.meshie.val.mesh_id_len > IEEE80211_MAX_SSID_LEN) {
 526                 dev_err(dev, "inconsistent mesh ID length\n");
 527                 defs.meshie.val.mesh_id_len = IEEE80211_MAX_SSID_LEN;
 528         }
 529
 530         memcpy(buf, defs.meshie.val.mesh_id, defs.meshie.val.mesh_id_len);
 531         buf[defs.meshie.val.mesh_id_len] = '\n';
 532         buf[defs.meshie.val.mesh_id_len + 1] = '\0';
 533
 534         return defs.meshie.val.mesh_id_len + 1;
 535 }
 536
 537 /**
 538  * mesh_id_set - Set function for sysfs attribute mesh_id
 539  * @dev: the &struct device
 540  * @attr: device attributes
 541  * @buf: buffer that contains new attribute value
 542  * @count: size of buffer
 543  */
 544 static ssize_t mesh_id_set(struct device *dev, struct device_attribute *attr,
 545                            const char *buf, size_t count)
 546 {
 547         struct cmd_ds_mesh_config cmd;
 548         struct mrvl_mesh_defaults defs;
 549         struct mrvl_meshie *ie;
 550         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 551         int len;
 552         int ret;
 553
 554         if (count < 2 || count > IEEE80211_MAX_SSID_LEN + 1)
 555                 return -EINVAL;
 556
 557         memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
 558         ie = (struct mrvl_meshie *) &cmd.data[0];
 559
 560         /* fetch all other Information Element parameters */
 561         ret = mesh_get_default_parameters(dev, &defs);
 562
 563         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 564
 565         /* transfer IE elements */
 566         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 567
 568         len = count - 1;
 569         memcpy(ie->val.mesh_id, buf, len);
 570         /* SSID len */
 571         ie->val.mesh_id_len = len;
 572         /* IE len */
 573         ie->len = sizeof(struct mrvl_meshie_val) - IEEE80211_MAX_SSID_LEN + len;
 574
 575         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 576                                    CMD_TYPE_MESH_SET_MESH_IE);
 577         if (ret)
 578                 return ret;
 579
 580         return strlen(buf);
 581 }
 582
 583 /**
 584  * protocol_id_get - Get function for sysfs attribute protocol_id
 585  * @dev: the &struct device
 586  * @attr: device attributes
 587  * @buf: buffer where data will be returned
 588  */
 589 static ssize_t protocol_id_get(struct device *dev,
 590                                struct device_attribute *attr, char *buf)
 591 {
 592         struct mrvl_mesh_defaults defs;
 593         int ret;
 594
 595         ret = mesh_get_default_parameters(dev, &defs);
 596
 597         if (ret)
 598                 return ret;
 599
 600         return snprintf(buf, 5, "%d\n", defs.meshie.val.active_protocol_id);
 601 }
 602
 603 /**
 604  * protocol_id_set - Set function for sysfs attribute protocol_id
 605  * @dev: the &struct device
 606  * @attr: device attributes
 607  * @buf: buffer that contains new attribute value
 608  * @count: size of buffer
 609  */
 610 static ssize_t protocol_id_set(struct device *dev,
 611                 struct device_attribute *attr, const char *buf, size_t count)
 612 {
 613         struct cmd_ds_mesh_config cmd;
 614         struct mrvl_mesh_defaults defs;
 615         struct mrvl_meshie *ie;
 616         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 617         uint32_t datum;
 618         int ret;
 619
 620         memset(&cmd, 0, sizeof(cmd));
 621         ret = sscanf(buf, "%d", &datum);
 622         if ((ret != 1) || (datum > 255))
 623                 return -EINVAL;
 624
 625         /* fetch all other Information Element parameters */
 626         ret = mesh_get_default_parameters(dev, &defs);
 627
 628         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 629
 630         /* transfer IE elements */
 631         ie = (struct mrvl_meshie *) &cmd.data[0];
 632         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 633         /* update protocol id */
 634         ie->val.active_protocol_id = datum;
 635
 636         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 637                                    CMD_TYPE_MESH_SET_MESH_IE);
 638         if (ret)
 639                 return ret;
 640
 641         return strlen(buf);
 642 }
 643
 644 /**
 645  * metric_id_get - Get function for sysfs attribute metric_id
 646  * @dev: the &struct device
 647  * @attr: device attributes
 648  * @buf: buffer where data will be returned
 649  */
 650 static ssize_t metric_id_get(struct device *dev,
 651                 struct device_attribute *attr, char *buf)
 652 {
 653         struct mrvl_mesh_defaults defs;
 654         int ret;
 655
 656         ret = mesh_get_default_parameters(dev, &defs);
 657
 658         if (ret)
 659                 return ret;
 660
 661         return snprintf(buf, 5, "%d\n", defs.meshie.val.active_metric_id);
 662 }
 663
 664 /**
 665  * metric_id_set - Set function for sysfs attribute metric_id
 666  * @dev: the &struct device
 667  * @attr: device attributes
 668  * @buf: buffer that contains new attribute value
 669  * @count: size of buffer
 670  */
 671 static ssize_t metric_id_set(struct device *dev, struct device_attribute *attr,
 672                              const char *buf, size_t count)
 673 {
 674         struct cmd_ds_mesh_config cmd;
 675         struct mrvl_mesh_defaults defs;
 676         struct mrvl_meshie *ie;
 677         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 678         uint32_t datum;
 679         int ret;
 680
 681         memset(&cmd, 0, sizeof(cmd));
 682         ret = sscanf(buf, "%d", &datum);
 683         if ((ret != 1) || (datum > 255))
 684                 return -EINVAL;
 685
 686         /* fetch all other Information Element parameters */
 687         ret = mesh_get_default_parameters(dev, &defs);
 688
 689         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 690
 691         /* transfer IE elements */
 692         ie = (struct mrvl_meshie *) &cmd.data[0];
 693         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 694         /* update metric id */
 695         ie->val.active_metric_id = datum;
 696
 697         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 698                                    CMD_TYPE_MESH_SET_MESH_IE);
 699         if (ret)
 700                 return ret;
 701
 702         return strlen(buf);
 703 }
 704
 705 /**
 706  * capability_get - Get function for sysfs attribute capability
 707  * @dev: the &struct device
 708  * @attr: device attributes
 709  * @buf: buffer where data will be returned
 710  */
 711 static ssize_t capability_get(struct device *dev,
 712                 struct device_attribute *attr, char *buf)
 713 {
 714         struct mrvl_mesh_defaults defs;
 715         int ret;
 716
 717         ret = mesh_get_default_parameters(dev, &defs);
 718
 719         if (ret)
 720                 return ret;
 721
 722         return snprintf(buf, 5, "%d\n", defs.meshie.val.mesh_capability);
 723 }
 724
 725 /**
 726  * capability_set - Set function for sysfs attribute capability
 727  * @dev: the &struct device
 728  * @attr: device attributes
 729  * @buf: buffer that contains new attribute value
 730  * @count: size of buffer
 731  */
 732 static ssize_t capability_set(struct device *dev, struct device_attribute *attr,
 733                               const char *buf, size_t count)
 734 {
 735         struct cmd_ds_mesh_config cmd;
 736         struct mrvl_mesh_defaults defs;
 737         struct mrvl_meshie *ie;
 738         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 739         uint32_t datum;
 740         int ret;
 741
 742         memset(&cmd, 0, sizeof(cmd));
 743         ret = sscanf(buf, "%d", &datum);
 744         if ((ret != 1) || (datum > 255))
 745                 return -EINVAL;
 746
 747         /* fetch all other Information Element parameters */
 748         ret = mesh_get_default_parameters(dev, &defs);
 749
 750         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 751
 752         /* transfer IE elements */
 753         ie = (struct mrvl_meshie *) &cmd.data[0];
 754         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 755         /* update value */
 756         ie->val.mesh_capability = datum;
 757
 758         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 759                                    CMD_TYPE_MESH_SET_MESH_IE);
 760         if (ret)
 761                 return ret;
 762
 763         return strlen(buf);
 764 }
 765
 766
 767 static DEVICE_ATTR(bootflag, 0644, bootflag_get, bootflag_set);
 768 static DEVICE_ATTR(boottime, 0644, boottime_get, boottime_set);
 769 static DEVICE_ATTR(channel, 0644, channel_get, channel_set);
 770 static DEVICE_ATTR(mesh_id, 0644, mesh_id_get, mesh_id_set);
 771 static DEVICE_ATTR(protocol_id, 0644, protocol_id_get, protocol_id_set);
 772 static DEVICE_ATTR(metric_id, 0644, metric_id_get, metric_id_set);
 773 static DEVICE_ATTR(capability, 0644, capability_get, capability_set);
 774
 775 static struct attribute *boot_opts_attrs[] = {
 776         &dev_attr_bootflag.attr,
 777         &dev_attr_boottime.attr,
 778         &dev_attr_channel.attr,
 779         NULL
 780 };
 781
 782 static const struct attribute_group boot_opts_group = {
 783         .name = "boot_options",
 784         .attrs = boot_opts_attrs,
 785 };
 786
 787 static struct attribute *mesh_ie_attrs[] = {
 788         &dev_attr_mesh_id.attr,
 789         &dev_attr_protocol_id.attr,
 790         &dev_attr_metric_id.attr,
 791         &dev_attr_capability.attr,
 792         NULL
 793 };
 794
 795 static const struct attribute_group mesh_ie_group = {
 796         .name = "mesh_ie",
 797         .attrs = mesh_ie_attrs,
 798 };
 799
 800 static void lbs_persist_config_init(struct net_device *dev)
 801 {
 802         int ret;
 803         ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
 804         ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
 805 }
 806
 807 static void lbs_persist_config_remove(struct net_device *dev)
 808 {
 809         sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group);
 810         sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group);
 811 }
 812
 813
 814 /***************************************************************************
 815  * Initializing and starting, stopping mesh
 816  */
 817
 818 /*
 819  * Check mesh FW version and appropriately send the mesh start
 820  * command
 821  */
 822 int lbs_init_mesh(struct lbs_private *priv)
 823 {
 824         int ret = 0;
 825
 826         lbs_deb_enter(LBS_DEB_MESH);
 827
 828         /* Determine mesh_fw_ver from fwrelease and fwcapinfo */
 829         /* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
 830         /* 5.110.22 have mesh command with 0xa3 command id */
 831         /* 10.0.0.p0 FW brings in mesh config command with different id */
 832         /* Check FW version MSB and initialize mesh_fw_ver */
 833         if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5) {
 834                 /* Enable mesh, if supported, and work out which TLV it uses.
 835                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
 836                    0x100 + 37 is the official value used in 5.110.21.pXX
 837                    but we check them in that order because 20.pXX doesn't
 838                    give an error -- it just silently fails. */
 839
 840                 /* 5.110.20.pXX firmware will fail the command if the channel
 841                    doesn't match the existing channel. But only if the TLV
 842                    is correct. If the channel is wrong, _BOTH_ versions will
 843                    give an error to 0x100+291, and allow 0x100+37 to succeed.
 844                    It's just that 5.110.20.pXX will not have done anything
 845                    useful */
 846
 847                 priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID;
 848                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) {
 849                         priv->mesh_tlv = TLV_TYPE_MESH_ID;
 850                         if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
 851                                 priv->mesh_tlv = 0;
 852                 }
 853         } else
 854         if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
 855                 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK)) {
 856                 /* 10.0.0.pXX new firmwares should succeed with TLV
 857                  * 0x100+37; Do not invoke command with old TLV.
 858                  */
 859                 priv->mesh_tlv = TLV_TYPE_MESH_ID;
 860                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
 861                         priv->mesh_tlv = 0;
 862         }
 863
 864         /* Stop meshing until interface is brought up */
 865         lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, 1);
 866
 867         if (priv->mesh_tlv) {
 868                 sprintf(priv->mesh_ssid, "mesh");
 869                 priv->mesh_ssid_len = 4;
 870                 ret = 1;
 871         }
 872
 873         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 874         return ret;
 875 }
 876
 877 void lbs_start_mesh(struct lbs_private *priv)
 878 {
 879         lbs_add_mesh(priv);
 880
 881         if (device_create_file(&priv->dev->dev, &dev_attr_lbs_mesh))
 882                 netdev_err(priv->dev, "cannot register lbs_mesh attribute\n");
 883 }
 884
 885 int lbs_deinit_mesh(struct lbs_private *priv)
 886 {
 887         struct net_device *dev = priv->dev;
 888         int ret = 0;
 889
 890         lbs_deb_enter(LBS_DEB_MESH);
 891
 892         if (priv->mesh_tlv) {
 893                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
 894                 ret = 1;
 895         }
 896
 897         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 898         return ret;
 899 }
 900
 901
 902 /**
 903  * lbs_mesh_stop - close the mshX interface
 904  *
 905  * @dev:        A pointer to &net_device structure
 906  * returns:     0
 907  */
 908 static int lbs_mesh_stop(struct net_device *dev)
 909 {
 910         struct lbs_private *priv = dev->ml_priv;
 911
 912         lbs_deb_enter(LBS_DEB_MESH);
 913         lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
 914                 lbs_mesh_get_channel(priv));
 915
 916         spin_lock_irq(&priv->driver_lock);
 917
 918         netif_stop_queue(dev);
 919         netif_carrier_off(dev);
 920
 921         spin_unlock_irq(&priv->driver_lock);
 922
 923         lbs_update_mcast(priv);
 924         if (!lbs_iface_active(priv))
 925                 lbs_stop_iface(priv);
 926
 927         lbs_deb_leave(LBS_DEB_MESH);
 928         return 0;
 929 }
 930
 931 /**
 932  * lbs_mesh_dev_open - open the mshX interface
 933  *
 934  * @dev:        A pointer to &net_device structure
 935  * returns:     0 or -EBUSY if monitor mode active
 936  */
 937 static int lbs_mesh_dev_open(struct net_device *dev)
 938 {
 939         struct lbs_private *priv = dev->ml_priv;
 940         int ret = 0;
 941
 942         lbs_deb_enter(LBS_DEB_NET);
 943         if (!priv->iface_running) {
 944                 ret = lbs_start_iface(priv);
 945                 if (ret)
 946                         goto out;
 947         }
 948
 949         spin_lock_irq(&priv->driver_lock);
 950
 951         if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) {
 952                 ret = -EBUSY;
 953                 spin_unlock_irq(&priv->driver_lock);
 954                 goto out;
 955         }
 956
 957         netif_carrier_on(dev);
 958
 959         if (!priv->tx_pending_len)
 960                 netif_wake_queue(dev);
 961
 962         spin_unlock_irq(&priv->driver_lock);
 963
 964         ret = lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
 965                 lbs_mesh_get_channel(priv));
 966
 967 out:
 968         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 969         return ret;
 970 }
 971
 972 static const struct net_device_ops mesh_netdev_ops = {
 973         .ndo_open               = lbs_mesh_dev_open,
 974         .ndo_stop               = lbs_mesh_stop,
 975         .ndo_start_xmit         = lbs_hard_start_xmit,
 976         .ndo_set_mac_address    = lbs_set_mac_address,
 977         .ndo_set_rx_mode        = lbs_set_multicast_list,
 978 };
 979
 980 /**
 981  * lbs_add_mesh - add mshX interface
 982  *
 983  * @priv:       A pointer to the &struct lbs_private structure
 984  * returns:     0 if successful, -X otherwise
 985  */
 986 static int lbs_add_mesh(struct lbs_private *priv)
 987 {
 988         struct net_device *mesh_dev = NULL;
 989         struct wireless_dev *mesh_wdev;
 990         int ret = 0;
 991
 992         lbs_deb_enter(LBS_DEB_MESH);
 993
 994         /* Allocate a virtual mesh device */
 995         mesh_wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
 996         if (!mesh_wdev) {
 997                 lbs_deb_mesh("init mshX wireless device failed\n");
 998                 ret = -ENOMEM;
 999                 goto done;
1000         }
1001
1002         mesh_dev = alloc_netdev(0, "msh%d", NET_NAME_UNKNOWN, ether_setup);
1003         if (!mesh_dev) {
1004                 lbs_deb_mesh("init mshX device failed\n");
1005                 ret = -ENOMEM;
1006                 goto err_free_wdev;
1007         }
1008
1009         mesh_wdev->iftype = NL80211_IFTYPE_MESH_POINT;
1010         mesh_wdev->wiphy = priv->wdev->wiphy;
1011         mesh_wdev->netdev = mesh_dev;
1012
1013         mesh_dev->ml_priv = priv;
1014         mesh_dev->ieee80211_ptr = mesh_wdev;
1015         priv->mesh_dev = mesh_dev;
1016
1017         mesh_dev->netdev_ops = &mesh_netdev_ops;
1018         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1019         eth_hw_addr_inherit(mesh_dev, priv->dev);
1020
1021         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1022
1023         mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1024         /* Register virtual mesh interface */
1025         ret = register_netdev(mesh_dev);
1026         if (ret) {
1027                 pr_err("cannot register mshX virtual interface\n");
1028                 goto err_free_netdev;
1029         }
1030
1031         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1032         if (ret)
1033                 goto err_unregister;
1034
1035         lbs_persist_config_init(mesh_dev);
1036
1037         /* Everything successful */
1038         ret = 0;
1039         goto done;
1040
1041 err_unregister:
1042         unregister_netdev(mesh_dev);
1043
1044 err_free_netdev:
1045         free_netdev(mesh_dev);
1046
1047 err_free_wdev:
1048         kfree(mesh_wdev);
1049
1050 done:
1051         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1052         return ret;
1053 }
1054
1055 void lbs_remove_mesh(struct lbs_private *priv)
1056 {
1057         struct net_device *mesh_dev;
1058
1059         mesh_dev = priv->mesh_dev;
1060         if (!mesh_dev)
1061                 return;
1062
1063         lbs_deb_enter(LBS_DEB_MESH);
1064         netif_stop_queue(mesh_dev);
1065         netif_carrier_off(mesh_dev);
1066         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1067         lbs_persist_config_remove(mesh_dev);
1068         unregister_netdev(mesh_dev);
1069         priv->mesh_dev = NULL;
1070         kfree(mesh_dev->ieee80211_ptr);
1071         free_netdev(mesh_dev);
1072         lbs_deb_leave(LBS_DEB_MESH);
1073 }
1074
1075
1076 /***************************************************************************
1077  * Sending and receiving
1078  */
1079 struct net_device *lbs_mesh_set_dev(struct lbs_private *priv,
1080         struct net_device *dev, struct rxpd *rxpd)
1081 {
1082         if (priv->mesh_dev) {
1083                 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) {
1084                         if (rxpd->rx_control & RxPD_MESH_FRAME)
1085                                 dev = priv->mesh_dev;
1086                 } else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) {
1087                         if (rxpd->u.bss.bss_num == MESH_IFACE_ID)
1088                                 dev = priv->mesh_dev;
1089                 }
1090         }
1091         return dev;
1092 }
1093
1094
1095 void lbs_mesh_set_txpd(struct lbs_private *priv,
1096         struct net_device *dev, struct txpd *txpd)
1097 {
1098         if (dev == priv->mesh_dev) {
1099                 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID)
1100                         txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME);
1101                 else if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
1102                         txpd->u.bss.bss_num = MESH_IFACE_ID;
1103         }
1104 }
1105
1106
1107 /***************************************************************************
1108  * Ethtool related
1109  */
1110
1111 static const char * const mesh_stat_strings[] = {
1112                         "drop_duplicate_bcast",
1113                         "drop_ttl_zero",
1114                         "drop_no_fwd_route",
1115                         "drop_no_buffers",
1116                         "fwded_unicast_cnt",
1117                         "fwded_bcast_cnt",
1118                         "drop_blind_table",
1119                         "tx_failed_cnt"
1120 };
1121
1122 void lbs_mesh_ethtool_get_stats(struct net_device *dev,
1123         struct ethtool_stats *stats, uint64_t *data)
1124 {
1125         struct lbs_private *priv = dev->ml_priv;
1126         struct cmd_ds_mesh_access mesh_access;
1127         int ret;
1128
1129         lbs_deb_enter(LBS_DEB_ETHTOOL);
1130
1131         /* Get Mesh Statistics */
1132         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_STATS, &mesh_access);
1133
1134         if (ret) {
1135                 memset(data, 0, MESH_STATS_NUM*(sizeof(uint64_t)));
1136                 return;
1137         }
1138
1139         priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]);
1140         priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]);
1141         priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]);
1142         priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]);
1143         priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]);
1144         priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]);
1145         priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]);
1146         priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]);
1147
1148         data[0] = priv->mstats.fwd_drop_rbt;
1149         data[1] = priv->mstats.fwd_drop_ttl;
1150         data[2] = priv->mstats.fwd_drop_noroute;
1151         data[3] = priv->mstats.fwd_drop_nobuf;
1152         data[4] = priv->mstats.fwd_unicast_cnt;
1153         data[5] = priv->mstats.fwd_bcast_cnt;
1154         data[6] = priv->mstats.drop_blind;
1155         data[7] = priv->mstats.tx_failed_cnt;
1156
1157         lbs_deb_enter(LBS_DEB_ETHTOOL);
1158 }
1159
1160 int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset)
1161 {
1162         struct lbs_private *priv = dev->ml_priv;
1163
1164         if (sset == ETH_SS_STATS && dev == priv->mesh_dev)
1165                 return MESH_STATS_NUM;
1166
1167         return -EOPNOTSUPP;
1168 }
1169
1170 void lbs_mesh_ethtool_get_strings(struct net_device *dev,
1171         uint32_t stringset, uint8_t *s)
1172 {
1173         int i;
1174
1175         lbs_deb_enter(LBS_DEB_ETHTOOL);
1176
1177         switch (stringset) {
1178         case ETH_SS_STATS:
1179                 for (i = 0; i < MESH_STATS_NUM; i++) {
1180                         memcpy(s + i * ETH_GSTRING_LEN,
1181                                         mesh_stat_strings[i],
1182                                         ETH_GSTRING_LEN);
1183                 }
1184                 break;
1185         }
1186         lbs_deb_enter(LBS_DEB_ETHTOOL);
1187 }