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         DECLARE_SSID_BUF(ssid);
  97
  98         memset(&cmd, 0, sizeof(cmd));
  99         cmd.channel = cpu_to_le16(chan);
 100         ie = (struct mrvl_meshie *)cmd.data;
 101
 102         switch (action) {
 103         case CMD_ACT_MESH_CONFIG_START:
 104                 ie->id = WLAN_EID_VENDOR_SPECIFIC;
 105                 ie->val.oui[0] = 0x00;
 106                 ie->val.oui[1] = 0x50;
 107                 ie->val.oui[2] = 0x43;
 108                 ie->val.type = MARVELL_MESH_IE_TYPE;
 109                 ie->val.subtype = MARVELL_MESH_IE_SUBTYPE;
 110                 ie->val.version = MARVELL_MESH_IE_VERSION;
 111                 ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP;
 112                 ie->val.active_metric_id = MARVELL_MESH_METRIC_ID;
 113                 ie->val.mesh_capability = MARVELL_MESH_CAPABILITY;
 114                 ie->val.mesh_id_len = priv->mesh_ssid_len;
 115                 memcpy(ie->val.mesh_id, priv->mesh_ssid, priv->mesh_ssid_len);
 116                 ie->len = sizeof(struct mrvl_meshie_val) -
 117                         IEEE80211_MAX_SSID_LEN + priv->mesh_ssid_len;
 118                 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val));
 119                 break;
 120         case CMD_ACT_MESH_CONFIG_STOP:
 121                 break;
 122         default:
 123                 return -1;
 124         }
 125         lbs_deb_cmd("mesh config action %d type %x channel %d SSID %s\n",
 126                     action, priv->mesh_tlv, chan,
 127                     print_ssid(ssid, priv->mesh_ssid, priv->mesh_ssid_len));
 128
 129         return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv);
 130 }
 131
 132 int lbs_mesh_set_channel(struct lbs_private *priv, u8 channel)
 133 {
 134         priv->mesh_channel = channel;
 135         return lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, channel);
 136 }
 137
 138 static uint16_t lbs_mesh_get_channel(struct lbs_private *priv)
 139 {
 140         return priv->mesh_channel ?: 1;
 141 }
 142
 143 /***************************************************************************
 144  * Mesh sysfs support
 145  */
 146
 147 /*
 148  * Attributes exported through sysfs
 149  */
 150
 151 /**
 152  * lbs_anycast_get - Get function for sysfs attribute anycast_mask
 153  * @dev: the &struct device
 154  * @attr: device attributes
 155  * @buf: buffer where data will be returned
 156  */
 157 static ssize_t lbs_anycast_get(struct device *dev,
 158                 struct device_attribute *attr, char * buf)
 159 {
 160         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 161         struct cmd_ds_mesh_access mesh_access;
 162         int ret;
 163
 164         memset(&mesh_access, 0, sizeof(mesh_access));
 165
 166         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 167         if (ret)
 168                 return ret;
 169
 170         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 171 }
 172
 173 /**
 174  * lbs_anycast_set - Set function for sysfs attribute anycast_mask
 175  * @dev: the &struct device
 176  * @attr: device attributes
 177  * @buf: buffer that contains new attribute value
 178  * @count: size of buffer
 179  */
 180 static ssize_t lbs_anycast_set(struct device *dev,
 181                 struct device_attribute *attr, const char * buf, size_t count)
 182 {
 183         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 184         struct cmd_ds_mesh_access mesh_access;
 185         uint32_t datum;
 186         int ret;
 187
 188         memset(&mesh_access, 0, sizeof(mesh_access));
 189         sscanf(buf, "%x", &datum);
 190         mesh_access.data[0] = cpu_to_le32(datum);
 191
 192         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 193         if (ret)
 194                 return ret;
 195
 196         return strlen(buf);
 197 }
 198
 199 /**
 200  * lbs_prb_rsp_limit_get - Get function for sysfs attribute prb_rsp_limit
 201  * @dev: the &struct device
 202  * @attr: device attributes
 203  * @buf: buffer where data will be returned
 204  */
 205 static ssize_t lbs_prb_rsp_limit_get(struct device *dev,
 206                 struct device_attribute *attr, char *buf)
 207 {
 208         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 209         struct cmd_ds_mesh_access mesh_access;
 210         int ret;
 211         u32 retry_limit;
 212
 213         memset(&mesh_access, 0, sizeof(mesh_access));
 214         mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET);
 215
 216         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
 217                         &mesh_access);
 218         if (ret)
 219                 return ret;
 220
 221         retry_limit = le32_to_cpu(mesh_access.data[1]);
 222         return snprintf(buf, 10, "%d\n", retry_limit);
 223 }
 224
 225 /**
 226  * lbs_prb_rsp_limit_set - Set function for sysfs attribute prb_rsp_limit
 227  * @dev: the &struct device
 228  * @attr: device attributes
 229  * @buf: buffer that contains new attribute value
 230  * @count: size of buffer
 231  */
 232 static ssize_t lbs_prb_rsp_limit_set(struct device *dev,
 233                 struct device_attribute *attr, const char *buf, size_t count)
 234 {
 235         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 236         struct cmd_ds_mesh_access mesh_access;
 237         int ret;
 238         unsigned long retry_limit;
 239
 240         memset(&mesh_access, 0, sizeof(mesh_access));
 241         mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET);
 242
 243         if (!kstrtoul(buf, 10, &retry_limit))
 244                 return -ENOTSUPP;
 245         if (retry_limit > 15)
 246                 return -ENOTSUPP;
 247
 248         mesh_access.data[1] = cpu_to_le32(retry_limit);
 249
 250         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
 251                         &mesh_access);
 252         if (ret)
 253                 return ret;
 254
 255         return strlen(buf);
 256 }
 257
 258 /**
 259  * lbs_mesh_get - Get function for sysfs attribute mesh
 260  * @dev: the &struct device
 261  * @attr: device attributes
 262  * @buf: buffer where data will be returned
 263  */
 264 static ssize_t lbs_mesh_get(struct device *dev,
 265                 struct device_attribute *attr, char * buf)
 266 {
 267         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 268         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 269 }
 270
 271 /**
 272  * lbs_mesh_set - Set function for sysfs attribute mesh
 273  * @dev: the &struct device
 274  * @attr: device attributes
 275  * @buf: buffer that contains new attribute value
 276  * @count: size of buffer
 277  */
 278 static ssize_t lbs_mesh_set(struct device *dev,
 279                 struct device_attribute *attr, const char * buf, size_t count)
 280 {
 281         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 282         int enable;
 283
 284         sscanf(buf, "%x", &enable);
 285         enable = !!enable;
 286         if (enable == !!priv->mesh_dev)
 287                 return count;
 288
 289         if (enable)
 290                 lbs_add_mesh(priv);
 291         else
 292                 lbs_remove_mesh(priv);
 293
 294         return count;
 295 }
 296
 297 /*
 298  * lbs_mesh attribute to be exported per ethX interface
 299  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 300  */
 301 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 302
 303 /*
 304  * anycast_mask attribute to be exported per mshX interface
 305  * through sysfs (/sys/class/net/mshX/anycast_mask)
 306  */
 307 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 308
 309 /*
 310  * prb_rsp_limit attribute to be exported per mshX interface
 311  * through sysfs (/sys/class/net/mshX/prb_rsp_limit)
 312  */
 313 static DEVICE_ATTR(prb_rsp_limit, 0644, lbs_prb_rsp_limit_get,
 314                 lbs_prb_rsp_limit_set);
 315
 316 static struct attribute *lbs_mesh_sysfs_entries[] = {
 317         &dev_attr_anycast_mask.attr,
 318         &dev_attr_prb_rsp_limit.attr,
 319         NULL,
 320 };
 321
 322 static const struct attribute_group lbs_mesh_attr_group = {
 323         .attrs = lbs_mesh_sysfs_entries,
 324 };
 325
 326
 327 /***************************************************************************
 328  * Persistent configuration support
 329  */
 330
 331 static int mesh_get_default_parameters(struct device *dev,
 332                                        struct mrvl_mesh_defaults *defs)
 333 {
 334         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 335         struct cmd_ds_mesh_config cmd;
 336         int ret;
 337
 338         memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
 339         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_GET,
 340                                    CMD_TYPE_MESH_GET_DEFAULTS);
 341
 342         if (ret)
 343                 return -EOPNOTSUPP;
 344
 345         memcpy(defs, &cmd.data[0], sizeof(struct mrvl_mesh_defaults));
 346
 347         return 0;
 348 }
 349
 350 /**
 351  * bootflag_get - Get function for sysfs attribute bootflag
 352  * @dev: the &struct device
 353  * @attr: device attributes
 354  * @buf: buffer where data will be returned
 355  */
 356 static ssize_t bootflag_get(struct device *dev,
 357                             struct device_attribute *attr, char *buf)
 358 {
 359         struct mrvl_mesh_defaults defs;
 360         int ret;
 361
 362         ret = mesh_get_default_parameters(dev, &defs);
 363
 364         if (ret)
 365                 return ret;
 366
 367         return snprintf(buf, 12, "%d\n", le32_to_cpu(defs.bootflag));
 368 }
 369
 370 /**
 371  * bootflag_set - Set function for sysfs attribute bootflag
 372  * @dev: the &struct device
 373  * @attr: device attributes
 374  * @buf: buffer that contains new attribute value
 375  * @count: size of buffer
 376  */
 377 static ssize_t bootflag_set(struct device *dev, struct device_attribute *attr,
 378                             const char *buf, size_t count)
 379 {
 380         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 381         struct cmd_ds_mesh_config cmd;
 382         uint32_t datum;
 383         int ret;
 384
 385         memset(&cmd, 0, sizeof(cmd));
 386         ret = sscanf(buf, "%d", &datum);
 387         if ((ret != 1) || (datum > 1))
 388                 return -EINVAL;
 389
 390         *((__le32 *)&cmd.data[0]) = cpu_to_le32(!!datum);
 391         cmd.length = cpu_to_le16(sizeof(uint32_t));
 392         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 393                                    CMD_TYPE_MESH_SET_BOOTFLAG);
 394         if (ret)
 395                 return ret;
 396
 397         return strlen(buf);
 398 }
 399
 400 /**
 401  * boottime_get - Get function for sysfs attribute boottime
 402  * @dev: the &struct device
 403  * @attr: device attributes
 404  * @buf: buffer where data will be returned
 405  */
 406 static ssize_t boottime_get(struct device *dev,
 407                             struct device_attribute *attr, char *buf)
 408 {
 409         struct mrvl_mesh_defaults defs;
 410         int ret;
 411
 412         ret = mesh_get_default_parameters(dev, &defs);
 413
 414         if (ret)
 415                 return ret;
 416
 417         return snprintf(buf, 12, "%d\n", defs.boottime);
 418 }
 419
 420 /**
 421  * boottime_set - Set function for sysfs attribute boottime
 422  * @dev: the &struct device
 423  * @attr: device attributes
 424  * @buf: buffer that contains new attribute value
 425  * @count: size of buffer
 426  */
 427 static ssize_t boottime_set(struct device *dev,
 428                 struct device_attribute *attr, const char *buf, size_t count)
 429 {
 430         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 431         struct cmd_ds_mesh_config cmd;
 432         uint32_t datum;
 433         int ret;
 434
 435         memset(&cmd, 0, sizeof(cmd));
 436         ret = sscanf(buf, "%d", &datum);
 437         if ((ret != 1) || (datum > 255))
 438                 return -EINVAL;
 439
 440         /* A too small boot time will result in the device booting into
 441          * standalone (no-host) mode before the host can take control of it,
 442          * so the change will be hard to revert.  This may be a desired
 443          * feature (e.g to configure a very fast boot time for devices that
 444          * will not be attached to a host), but dangerous.  So I'm enforcing a
 445          * lower limit of 20 seconds:  remove and recompile the driver if this
 446          * does not work for you.
 447          */
 448         datum = (datum < 20) ? 20 : datum;
 449         cmd.data[0] = datum;
 450         cmd.length = cpu_to_le16(sizeof(uint8_t));
 451         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 452                                    CMD_TYPE_MESH_SET_BOOTTIME);
 453         if (ret)
 454                 return ret;
 455
 456         return strlen(buf);
 457 }
 458
 459 /**
 460  * channel_get - Get function for sysfs attribute channel
 461  * @dev: the &struct device
 462  * @attr: device attributes
 463  * @buf: buffer where data will be returned
 464  */
 465 static ssize_t channel_get(struct device *dev,
 466                            struct device_attribute *attr, char *buf)
 467 {
 468         struct mrvl_mesh_defaults defs;
 469         int ret;
 470
 471         ret = mesh_get_default_parameters(dev, &defs);
 472
 473         if (ret)
 474                 return ret;
 475
 476         return snprintf(buf, 12, "%d\n", le16_to_cpu(defs.channel));
 477 }
 478
 479 /**
 480  * channel_set - Set function for sysfs attribute channel
 481  * @dev: the &struct device
 482  * @attr: device attributes
 483  * @buf: buffer that contains new attribute value
 484  * @count: size of buffer
 485  */
 486 static ssize_t channel_set(struct device *dev, struct device_attribute *attr,
 487                            const char *buf, size_t count)
 488 {
 489         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 490         struct cmd_ds_mesh_config cmd;
 491         uint32_t datum;
 492         int ret;
 493
 494         memset(&cmd, 0, sizeof(cmd));
 495         ret = sscanf(buf, "%d", &datum);
 496         if (ret != 1 || datum < 1 || datum > 11)
 497                 return -EINVAL;
 498
 499         *((__le16 *)&cmd.data[0]) = cpu_to_le16(datum);
 500         cmd.length = cpu_to_le16(sizeof(uint16_t));
 501         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 502                                    CMD_TYPE_MESH_SET_DEF_CHANNEL);
 503         if (ret)
 504                 return ret;
 505
 506         return strlen(buf);
 507 }
 508
 509 /**
 510  * mesh_id_get - Get function for sysfs attribute mesh_id
 511  * @dev: the &struct device
 512  * @attr: device attributes
 513  * @buf: buffer where data will be returned
 514  */
 515 static ssize_t mesh_id_get(struct device *dev, struct device_attribute *attr,
 516                            char *buf)
 517 {
 518         struct mrvl_mesh_defaults defs;
 519         int ret;
 520
 521         ret = mesh_get_default_parameters(dev, &defs);
 522
 523         if (ret)
 524                 return ret;
 525
 526         if (defs.meshie.val.mesh_id_len > IEEE80211_MAX_SSID_LEN) {
 527                 dev_err(dev, "inconsistent mesh ID length\n");
 528                 defs.meshie.val.mesh_id_len = IEEE80211_MAX_SSID_LEN;
 529         }
 530
 531         memcpy(buf, defs.meshie.val.mesh_id, defs.meshie.val.mesh_id_len);
 532         buf[defs.meshie.val.mesh_id_len] = '\n';
 533         buf[defs.meshie.val.mesh_id_len + 1] = '\0';
 534
 535         return defs.meshie.val.mesh_id_len + 1;
 536 }
 537
 538 /**
 539  * mesh_id_set - Set function for sysfs attribute mesh_id
 540  * @dev: the &struct device
 541  * @attr: device attributes
 542  * @buf: buffer that contains new attribute value
 543  * @count: size of buffer
 544  */
 545 static ssize_t mesh_id_set(struct device *dev, struct device_attribute *attr,
 546                            const char *buf, size_t count)
 547 {
 548         struct cmd_ds_mesh_config cmd;
 549         struct mrvl_mesh_defaults defs;
 550         struct mrvl_meshie *ie;
 551         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 552         int len;
 553         int ret;
 554
 555         if (count < 2 || count > IEEE80211_MAX_SSID_LEN + 1)
 556                 return -EINVAL;
 557
 558         memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
 559         ie = (struct mrvl_meshie *) &cmd.data[0];
 560
 561         /* fetch all other Information Element parameters */
 562         ret = mesh_get_default_parameters(dev, &defs);
 563
 564         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 565
 566         /* transfer IE elements */
 567         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 568
 569         len = count - 1;
 570         memcpy(ie->val.mesh_id, buf, len);
 571         /* SSID len */
 572         ie->val.mesh_id_len = len;
 573         /* IE len */
 574         ie->len = sizeof(struct mrvl_meshie_val) - IEEE80211_MAX_SSID_LEN + len;
 575
 576         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 577                                    CMD_TYPE_MESH_SET_MESH_IE);
 578         if (ret)
 579                 return ret;
 580
 581         return strlen(buf);
 582 }
 583
 584 /**
 585  * protocol_id_get - Get function for sysfs attribute protocol_id
 586  * @dev: the &struct device
 587  * @attr: device attributes
 588  * @buf: buffer where data will be returned
 589  */
 590 static ssize_t protocol_id_get(struct device *dev,
 591                                struct device_attribute *attr, char *buf)
 592 {
 593         struct mrvl_mesh_defaults defs;
 594         int ret;
 595
 596         ret = mesh_get_default_parameters(dev, &defs);
 597
 598         if (ret)
 599                 return ret;
 600
 601         return snprintf(buf, 5, "%d\n", defs.meshie.val.active_protocol_id);
 602 }
 603
 604 /**
 605  * protocol_id_set - Set function for sysfs attribute protocol_id
 606  * @dev: the &struct device
 607  * @attr: device attributes
 608  * @buf: buffer that contains new attribute value
 609  * @count: size of buffer
 610  */
 611 static ssize_t protocol_id_set(struct device *dev,
 612                 struct device_attribute *attr, const char *buf, size_t count)
 613 {
 614         struct cmd_ds_mesh_config cmd;
 615         struct mrvl_mesh_defaults defs;
 616         struct mrvl_meshie *ie;
 617         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 618         uint32_t datum;
 619         int ret;
 620
 621         memset(&cmd, 0, sizeof(cmd));
 622         ret = sscanf(buf, "%d", &datum);
 623         if ((ret != 1) || (datum > 255))
 624                 return -EINVAL;
 625
 626         /* fetch all other Information Element parameters */
 627         ret = mesh_get_default_parameters(dev, &defs);
 628
 629         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 630
 631         /* transfer IE elements */
 632         ie = (struct mrvl_meshie *) &cmd.data[0];
 633         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 634         /* update protocol id */
 635         ie->val.active_protocol_id = datum;
 636
 637         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 638                                    CMD_TYPE_MESH_SET_MESH_IE);
 639         if (ret)
 640                 return ret;
 641
 642         return strlen(buf);
 643 }
 644
 645 /**
 646  * metric_id_get - Get function for sysfs attribute metric_id
 647  * @dev: the &struct device
 648  * @attr: device attributes
 649  * @buf: buffer where data will be returned
 650  */
 651 static ssize_t metric_id_get(struct device *dev,
 652                 struct device_attribute *attr, char *buf)
 653 {
 654         struct mrvl_mesh_defaults defs;
 655         int ret;
 656
 657         ret = mesh_get_default_parameters(dev, &defs);
 658
 659         if (ret)
 660                 return ret;
 661
 662         return snprintf(buf, 5, "%d\n", defs.meshie.val.active_metric_id);
 663 }
 664
 665 /**
 666  * metric_id_set - Set function for sysfs attribute metric_id
 667  * @dev: the &struct device
 668  * @attr: device attributes
 669  * @buf: buffer that contains new attribute value
 670  * @count: size of buffer
 671  */
 672 static ssize_t metric_id_set(struct device *dev, struct device_attribute *attr,
 673                              const char *buf, size_t count)
 674 {
 675         struct cmd_ds_mesh_config cmd;
 676         struct mrvl_mesh_defaults defs;
 677         struct mrvl_meshie *ie;
 678         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 679         uint32_t datum;
 680         int ret;
 681
 682         memset(&cmd, 0, sizeof(cmd));
 683         ret = sscanf(buf, "%d", &datum);
 684         if ((ret != 1) || (datum > 255))
 685                 return -EINVAL;
 686
 687         /* fetch all other Information Element parameters */
 688         ret = mesh_get_default_parameters(dev, &defs);
 689
 690         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 691
 692         /* transfer IE elements */
 693         ie = (struct mrvl_meshie *) &cmd.data[0];
 694         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 695         /* update metric id */
 696         ie->val.active_metric_id = datum;
 697
 698         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 699                                    CMD_TYPE_MESH_SET_MESH_IE);
 700         if (ret)
 701                 return ret;
 702
 703         return strlen(buf);
 704 }
 705
 706 /**
 707  * capability_get - Get function for sysfs attribute capability
 708  * @dev: the &struct device
 709  * @attr: device attributes
 710  * @buf: buffer where data will be returned
 711  */
 712 static ssize_t capability_get(struct device *dev,
 713                 struct device_attribute *attr, char *buf)
 714 {
 715         struct mrvl_mesh_defaults defs;
 716         int ret;
 717
 718         ret = mesh_get_default_parameters(dev, &defs);
 719
 720         if (ret)
 721                 return ret;
 722
 723         return snprintf(buf, 5, "%d\n", defs.meshie.val.mesh_capability);
 724 }
 725
 726 /**
 727  * capability_set - Set function for sysfs attribute capability
 728  * @dev: the &struct device
 729  * @attr: device attributes
 730  * @buf: buffer that contains new attribute value
 731  * @count: size of buffer
 732  */
 733 static ssize_t capability_set(struct device *dev, struct device_attribute *attr,
 734                               const char *buf, size_t count)
 735 {
 736         struct cmd_ds_mesh_config cmd;
 737         struct mrvl_mesh_defaults defs;
 738         struct mrvl_meshie *ie;
 739         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 740         uint32_t datum;
 741         int ret;
 742
 743         memset(&cmd, 0, sizeof(cmd));
 744         ret = sscanf(buf, "%d", &datum);
 745         if ((ret != 1) || (datum > 255))
 746                 return -EINVAL;
 747
 748         /* fetch all other Information Element parameters */
 749         ret = mesh_get_default_parameters(dev, &defs);
 750
 751         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 752
 753         /* transfer IE elements */
 754         ie = (struct mrvl_meshie *) &cmd.data[0];
 755         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 756         /* update value */
 757         ie->val.mesh_capability = datum;
 758
 759         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 760                                    CMD_TYPE_MESH_SET_MESH_IE);
 761         if (ret)
 762                 return ret;
 763
 764         return strlen(buf);
 765 }
 766
 767
 768 static DEVICE_ATTR(bootflag, 0644, bootflag_get, bootflag_set);
 769 static DEVICE_ATTR(boottime, 0644, boottime_get, boottime_set);
 770 static DEVICE_ATTR(channel, 0644, channel_get, channel_set);
 771 static DEVICE_ATTR(mesh_id, 0644, mesh_id_get, mesh_id_set);
 772 static DEVICE_ATTR(protocol_id, 0644, protocol_id_get, protocol_id_set);
 773 static DEVICE_ATTR(metric_id, 0644, metric_id_get, metric_id_set);
 774 static DEVICE_ATTR(capability, 0644, capability_get, capability_set);
 775
 776 static struct attribute *boot_opts_attrs[] = {
 777         &dev_attr_bootflag.attr,
 778         &dev_attr_boottime.attr,
 779         &dev_attr_channel.attr,
 780         NULL
 781 };
 782
 783 static const struct attribute_group boot_opts_group = {
 784         .name = "boot_options",
 785         .attrs = boot_opts_attrs,
 786 };
 787
 788 static struct attribute *mesh_ie_attrs[] = {
 789         &dev_attr_mesh_id.attr,
 790         &dev_attr_protocol_id.attr,
 791         &dev_attr_metric_id.attr,
 792         &dev_attr_capability.attr,
 793         NULL
 794 };
 795
 796 static const struct attribute_group mesh_ie_group = {
 797         .name = "mesh_ie",
 798         .attrs = mesh_ie_attrs,
 799 };
 800
 801 static void lbs_persist_config_init(struct net_device *dev)
 802 {
 803         int ret;
 804         ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
 805         ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
 806 }
 807
 808 static void lbs_persist_config_remove(struct net_device *dev)
 809 {
 810         sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group);
 811         sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group);
 812 }
 813
 814
 815 /***************************************************************************
 816  * Initializing and starting, stopping mesh
 817  */
 818
 819 /*
 820  * Check mesh FW version and appropriately send the mesh start
 821  * command
 822  */
 823 int lbs_init_mesh(struct lbs_private *priv)
 824 {
 825         int ret = 0;
 826
 827         lbs_deb_enter(LBS_DEB_MESH);
 828
 829         /* Determine mesh_fw_ver from fwrelease and fwcapinfo */
 830         /* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
 831         /* 5.110.22 have mesh command with 0xa3 command id */
 832         /* 10.0.0.p0 FW brings in mesh config command with different id */
 833         /* Check FW version MSB and initialize mesh_fw_ver */
 834         if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5) {
 835                 /* Enable mesh, if supported, and work out which TLV it uses.
 836                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
 837                    0x100 + 37 is the official value used in 5.110.21.pXX
 838                    but we check them in that order because 20.pXX doesn't
 839                    give an error -- it just silently fails. */
 840
 841                 /* 5.110.20.pXX firmware will fail the command if the channel
 842                    doesn't match the existing channel. But only if the TLV
 843                    is correct. If the channel is wrong, _BOTH_ versions will
 844                    give an error to 0x100+291, and allow 0x100+37 to succeed.
 845                    It's just that 5.110.20.pXX will not have done anything
 846                    useful */
 847
 848                 priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID;
 849                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) {
 850                         priv->mesh_tlv = TLV_TYPE_MESH_ID;
 851                         if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
 852                                 priv->mesh_tlv = 0;
 853                 }
 854         } else
 855         if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
 856                 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK)) {
 857                 /* 10.0.0.pXX new firmwares should succeed with TLV
 858                  * 0x100+37; Do not invoke command with old TLV.
 859                  */
 860                 priv->mesh_tlv = TLV_TYPE_MESH_ID;
 861                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
 862                         priv->mesh_tlv = 0;
 863         }
 864
 865         /* Stop meshing until interface is brought up */
 866         lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, 1);
 867
 868         if (priv->mesh_tlv) {
 869                 sprintf(priv->mesh_ssid, "mesh");
 870                 priv->mesh_ssid_len = 4;
 871                 ret = 1;
 872         }
 873
 874         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 875         return ret;
 876 }
 877
 878 void lbs_start_mesh(struct lbs_private *priv)
 879 {
 880         lbs_add_mesh(priv);
 881
 882         if (device_create_file(&priv->dev->dev, &dev_attr_lbs_mesh))
 883                 netdev_err(priv->dev, "cannot register lbs_mesh attribute\n");
 884 }
 885
 886 int lbs_deinit_mesh(struct lbs_private *priv)
 887 {
 888         struct net_device *dev = priv->dev;
 889         int ret = 0;
 890
 891         lbs_deb_enter(LBS_DEB_MESH);
 892
 893         if (priv->mesh_tlv) {
 894                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
 895                 ret = 1;
 896         }
 897
 898         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 899         return ret;
 900 }
 901
 902
 903 /**
 904  * lbs_mesh_stop - close the mshX interface
 905  *
 906  * @dev:        A pointer to &net_device structure
 907  * returns:     0
 908  */
 909 static int lbs_mesh_stop(struct net_device *dev)
 910 {
 911         struct lbs_private *priv = dev->ml_priv;
 912
 913         lbs_deb_enter(LBS_DEB_MESH);
 914         lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
 915                 lbs_mesh_get_channel(priv));
 916
 917         spin_lock_irq(&priv->driver_lock);
 918
 919         netif_stop_queue(dev);
 920         netif_carrier_off(dev);
 921
 922         spin_unlock_irq(&priv->driver_lock);
 923
 924         lbs_update_mcast(priv);
 925         if (!lbs_iface_active(priv))
 926                 lbs_stop_iface(priv);
 927
 928         lbs_deb_leave(LBS_DEB_MESH);
 929         return 0;
 930 }
 931
 932 /**
 933  * lbs_mesh_dev_open - open the mshX interface
 934  *
 935  * @dev:        A pointer to &net_device structure
 936  * returns:     0 or -EBUSY if monitor mode active
 937  */
 938 static int lbs_mesh_dev_open(struct net_device *dev)
 939 {
 940         struct lbs_private *priv = dev->ml_priv;
 941         int ret = 0;
 942
 943         lbs_deb_enter(LBS_DEB_NET);
 944         if (!priv->iface_running) {
 945                 ret = lbs_start_iface(priv);
 946                 if (ret)
 947                         goto out;
 948         }
 949
 950         spin_lock_irq(&priv->driver_lock);
 951
 952         if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) {
 953                 ret = -EBUSY;
 954                 spin_unlock_irq(&priv->driver_lock);
 955                 goto out;
 956         }
 957
 958         netif_carrier_on(dev);
 959
 960         if (!priv->tx_pending_len)
 961                 netif_wake_queue(dev);
 962
 963         spin_unlock_irq(&priv->driver_lock);
 964
 965         ret = lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
 966                 lbs_mesh_get_channel(priv));
 967
 968 out:
 969         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 970         return ret;
 971 }
 972
 973 static const struct net_device_ops mesh_netdev_ops = {
 974         .ndo_open               = lbs_mesh_dev_open,
 975         .ndo_stop               = lbs_mesh_stop,
 976         .ndo_start_xmit         = lbs_hard_start_xmit,
 977         .ndo_set_mac_address    = lbs_set_mac_address,
 978         .ndo_set_rx_mode        = lbs_set_multicast_list,
 979 };
 980
 981 /**
 982  * lbs_add_mesh - add mshX interface
 983  *
 984  * @priv:       A pointer to the &struct lbs_private structure
 985  * returns:     0 if successful, -X otherwise
 986  */
 987 static int lbs_add_mesh(struct lbs_private *priv)
 988 {
 989         struct net_device *mesh_dev = NULL;
 990         struct wireless_dev *mesh_wdev;
 991         int ret = 0;
 992
 993         lbs_deb_enter(LBS_DEB_MESH);
 994
 995         /* Allocate a virtual mesh device */
 996         mesh_wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
 997         if (!mesh_wdev) {
 998                 lbs_deb_mesh("init mshX wireless device failed\n");
 999                 ret = -ENOMEM;
1000                 goto done;
1001         }
1002
1003         mesh_dev = alloc_netdev(0, "msh%d", ether_setup);
1004         if (!mesh_dev) {
1005                 lbs_deb_mesh("init mshX device failed\n");
1006                 ret = -ENOMEM;
1007                 goto err_free_wdev;
1008         }
1009
1010         mesh_wdev->iftype = NL80211_IFTYPE_MESH_POINT;
1011         mesh_wdev->wiphy = priv->wdev->wiphy;
1012         mesh_wdev->netdev = mesh_dev;
1013
1014         mesh_dev->ml_priv = priv;
1015         mesh_dev->ieee80211_ptr = mesh_wdev;
1016         priv->mesh_dev = mesh_dev;
1017
1018         mesh_dev->netdev_ops = &mesh_netdev_ops;
1019         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1020         eth_hw_addr_inherit(mesh_dev, priv->dev);
1021
1022         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1023
1024         mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1025         /* Register virtual mesh interface */
1026         ret = register_netdev(mesh_dev);
1027         if (ret) {
1028                 pr_err("cannot register mshX virtual interface\n");
1029                 goto err_free_netdev;
1030         }
1031
1032         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1033         if (ret)
1034                 goto err_unregister;
1035
1036         lbs_persist_config_init(mesh_dev);
1037
1038         /* Everything successful */
1039         ret = 0;
1040         goto done;
1041
1042 err_unregister:
1043         unregister_netdev(mesh_dev);
1044
1045 err_free_netdev:
1046         free_netdev(mesh_dev);
1047
1048 err_free_wdev:
1049         kfree(mesh_wdev);
1050
1051 done:
1052         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1053         return ret;
1054 }
1055
1056 void lbs_remove_mesh(struct lbs_private *priv)
1057 {
1058         struct net_device *mesh_dev;
1059
1060         mesh_dev = priv->mesh_dev;
1061         if (!mesh_dev)
1062                 return;
1063
1064         lbs_deb_enter(LBS_DEB_MESH);
1065         netif_stop_queue(mesh_dev);
1066         netif_carrier_off(mesh_dev);
1067         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1068         lbs_persist_config_remove(mesh_dev);
1069         unregister_netdev(mesh_dev);
1070         priv->mesh_dev = NULL;
1071         kfree(mesh_dev->ieee80211_ptr);
1072         free_netdev(mesh_dev);
1073         lbs_deb_leave(LBS_DEB_MESH);
1074 }
1075
1076
1077 /***************************************************************************
1078  * Sending and receiving
1079  */
1080 struct net_device *lbs_mesh_set_dev(struct lbs_private *priv,
1081         struct net_device *dev, struct rxpd *rxpd)
1082 {
1083         if (priv->mesh_dev) {
1084                 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) {
1085                         if (rxpd->rx_control & RxPD_MESH_FRAME)
1086                                 dev = priv->mesh_dev;
1087                 } else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) {
1088                         if (rxpd->u.bss.bss_num == MESH_IFACE_ID)
1089                                 dev = priv->mesh_dev;
1090                 }
1091         }
1092         return dev;
1093 }
1094
1095
1096 void lbs_mesh_set_txpd(struct lbs_private *priv,
1097         struct net_device *dev, struct txpd *txpd)
1098 {
1099         if (dev == priv->mesh_dev) {
1100                 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID)
1101                         txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME);
1102                 else if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
1103                         txpd->u.bss.bss_num = MESH_IFACE_ID;
1104         }
1105 }
1106
1107
1108 /***************************************************************************
1109  * Ethtool related
1110  */
1111
1112 static const char * const mesh_stat_strings[] = {
1113                         "drop_duplicate_bcast",
1114                         "drop_ttl_zero",
1115                         "drop_no_fwd_route",
1116                         "drop_no_buffers",
1117                         "fwded_unicast_cnt",
1118                         "fwded_bcast_cnt",
1119                         "drop_blind_table",
1120                         "tx_failed_cnt"
1121 };
1122
1123 void lbs_mesh_ethtool_get_stats(struct net_device *dev,
1124         struct ethtool_stats *stats, uint64_t *data)
1125 {
1126         struct lbs_private *priv = dev->ml_priv;
1127         struct cmd_ds_mesh_access mesh_access;
1128         int ret;
1129
1130         lbs_deb_enter(LBS_DEB_ETHTOOL);
1131
1132         /* Get Mesh Statistics */
1133         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_STATS, &mesh_access);
1134
1135         if (ret) {
1136                 memset(data, 0, MESH_STATS_NUM*(sizeof(uint64_t)));
1137                 return;
1138         }
1139
1140         priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]);
1141         priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]);
1142         priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]);
1143         priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]);
1144         priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]);
1145         priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]);
1146         priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]);
1147         priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]);
1148
1149         data[0] = priv->mstats.fwd_drop_rbt;
1150         data[1] = priv->mstats.fwd_drop_ttl;
1151         data[2] = priv->mstats.fwd_drop_noroute;
1152         data[3] = priv->mstats.fwd_drop_nobuf;
1153         data[4] = priv->mstats.fwd_unicast_cnt;
1154         data[5] = priv->mstats.fwd_bcast_cnt;
1155         data[6] = priv->mstats.drop_blind;
1156         data[7] = priv->mstats.tx_failed_cnt;
1157
1158         lbs_deb_enter(LBS_DEB_ETHTOOL);
1159 }
1160
1161 int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset)
1162 {
1163         struct lbs_private *priv = dev->ml_priv;
1164
1165         if (sset == ETH_SS_STATS && dev == priv->mesh_dev)
1166                 return MESH_STATS_NUM;
1167
1168         return -EOPNOTSUPP;
1169 }
1170
1171 void lbs_mesh_ethtool_get_strings(struct net_device *dev,
1172         uint32_t stringset, uint8_t *s)
1173 {
1174         int i;
1175
1176         lbs_deb_enter(LBS_DEB_ETHTOOL);
1177
1178         switch (stringset) {
1179         case ETH_SS_STATS:
1180                 for (i = 0; i < MESH_STATS_NUM; i++) {
1181                         memcpy(s + i * ETH_GSTRING_LEN,
1182                                         mesh_stat_strings[i],
1183                                         ETH_GSTRING_LEN);
1184                 }
1185                 break;
1186         }
1187         lbs_deb_enter(LBS_DEB_ETHTOOL);
1188 }