drivers/net/wireless/marvell/libertas/mesh.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   3
   4 #include <linux/delay.h>
   5 #include <linux/etherdevice.h>
   6 #include <linux/hardirq.h>
   7 #include <linux/netdevice.h>
   8 #include <linux/if_ether.h>
   9 #include <linux/if_arp.h>
  10 #include <linux/kthread.h>
  11 #include <linux/kfifo.h>
  12 #include <net/cfg80211.h>
  13
  14 #include "mesh.h"
  15 #include "decl.h"
  16 #include "cmd.h"
  17
  18
  19 static int lbs_add_mesh(struct lbs_private *priv);
  20
  21 /***************************************************************************
  22  * Mesh command handling
  23  */
  24
  25 static int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action,
  26                     struct cmd_ds_mesh_access *cmd)
  27 {
  28         int ret;
  29
  30         cmd->hdr.command = cpu_to_le16(CMD_MESH_ACCESS);
  31         cmd->hdr.size = cpu_to_le16(sizeof(*cmd));
  32         cmd->hdr.result = 0;
  33
  34         cmd->action = cpu_to_le16(cmd_action);
  35
  36         ret = lbs_cmd_with_response(priv, CMD_MESH_ACCESS, cmd);
  37
  38         return ret;
  39 }
  40
  41 static int __lbs_mesh_config_send(struct lbs_private *priv,
  42                                   struct cmd_ds_mesh_config *cmd,
  43                                   uint16_t action, uint16_t type)
  44 {
  45         int ret;
  46         u16 command = CMD_MESH_CONFIG_OLD;
  47
  48         /*
  49          * Command id is 0xac for v10 FW along with mesh interface
  50          * id in bits 14-13-12.
  51          */
  52         if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
  53                 command = CMD_MESH_CONFIG |
  54                           (MESH_IFACE_ID << MESH_IFACE_BIT_OFFSET);
  55
  56         cmd->hdr.command = cpu_to_le16(command);
  57         cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_mesh_config));
  58         cmd->hdr.result = 0;
  59
  60         cmd->type = cpu_to_le16(type);
  61         cmd->action = cpu_to_le16(action);
  62
  63         ret = lbs_cmd_with_response(priv, command, cmd);
  64
  65         return ret;
  66 }
  67
  68 static int lbs_mesh_config_send(struct lbs_private *priv,
  69                          struct cmd_ds_mesh_config *cmd,
  70                          uint16_t action, uint16_t type)
  71 {
  72         int ret;
  73
  74         if (!(priv->fwcapinfo & FW_CAPINFO_PERSISTENT_CONFIG))
  75                 return -EOPNOTSUPP;
  76
  77         ret = __lbs_mesh_config_send(priv, cmd, action, type);
  78         return ret;
  79 }
  80
  81 /* This function is the CMD_MESH_CONFIG legacy function.  It only handles the
  82  * START and STOP actions.  The extended actions supported by CMD_MESH_CONFIG
  83  * are all handled by preparing a struct cmd_ds_mesh_config and passing it to
  84  * lbs_mesh_config_send.
  85  */
  86 static int lbs_mesh_config(struct lbs_private *priv, uint16_t action,
  87                 uint16_t chan)
  88 {
  89         struct cmd_ds_mesh_config cmd;
  90         struct mrvl_meshie *ie;
  91
  92         memset(&cmd, 0, sizeof(cmd));
  93         cmd.channel = cpu_to_le16(chan);
  94         ie = (struct mrvl_meshie *)cmd.data;
  95
  96         switch (action) {
  97         case CMD_ACT_MESH_CONFIG_START:
  98                 ie->id = WLAN_EID_VENDOR_SPECIFIC;
  99                 ie->val.oui[0] = 0x00;
 100                 ie->val.oui[1] = 0x50;
 101                 ie->val.oui[2] = 0x43;
 102                 ie->val.type = MARVELL_MESH_IE_TYPE;
 103                 ie->val.subtype = MARVELL_MESH_IE_SUBTYPE;
 104                 ie->val.version = MARVELL_MESH_IE_VERSION;
 105                 ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP;
 106                 ie->val.active_metric_id = MARVELL_MESH_METRIC_ID;
 107                 ie->val.mesh_capability = MARVELL_MESH_CAPABILITY;
 108                 ie->val.mesh_id_len = priv->mesh_ssid_len;
 109                 memcpy(ie->val.mesh_id, priv->mesh_ssid, priv->mesh_ssid_len);
 110                 ie->len = sizeof(struct mrvl_meshie_val) -
 111                         IEEE80211_MAX_SSID_LEN + priv->mesh_ssid_len;
 112                 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val));
 113                 break;
 114         case CMD_ACT_MESH_CONFIG_STOP:
 115                 break;
 116         default:
 117                 return -1;
 118         }
 119         lbs_deb_cmd("mesh config action %d type %x channel %d SSID %*pE\n",
 120                     action, priv->mesh_tlv, chan, priv->mesh_ssid_len,
 121                     priv->mesh_ssid);
 122
 123         return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv);
 124 }
 125
 126 int lbs_mesh_set_channel(struct lbs_private *priv, u8 channel)
 127 {
 128         priv->mesh_channel = channel;
 129         return lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, channel);
 130 }
 131
 132 static uint16_t lbs_mesh_get_channel(struct lbs_private *priv)
 133 {
 134         return priv->mesh_channel ?: 1;
 135 }
 136
 137 /***************************************************************************
 138  * Mesh sysfs support
 139  */
 140
 141 /*
 142  * Attributes exported through sysfs
 143  */
 144
 145 /**
 146  * lbs_anycast_get - Get function for sysfs attribute anycast_mask
 147  * @dev: the &struct device
 148  * @attr: device attributes
 149  * @buf: buffer where data will be returned
 150  */
 151 static ssize_t lbs_anycast_get(struct device *dev,
 152                 struct device_attribute *attr, char * buf)
 153 {
 154         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 155         struct cmd_ds_mesh_access mesh_access;
 156         int ret;
 157
 158         memset(&mesh_access, 0, sizeof(mesh_access));
 159
 160         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 161         if (ret)
 162                 return ret;
 163
 164         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 165 }
 166
 167 /**
 168  * lbs_anycast_set - Set function for sysfs attribute anycast_mask
 169  * @dev: the &struct device
 170  * @attr: device attributes
 171  * @buf: buffer that contains new attribute value
 172  * @count: size of buffer
 173  */
 174 static ssize_t lbs_anycast_set(struct device *dev,
 175                 struct device_attribute *attr, const char * buf, size_t count)
 176 {
 177         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 178         struct cmd_ds_mesh_access mesh_access;
 179         uint32_t datum;
 180         int ret;
 181
 182         memset(&mesh_access, 0, sizeof(mesh_access));
 183         sscanf(buf, "%x", &datum);
 184         mesh_access.data[0] = cpu_to_le32(datum);
 185
 186         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 187         if (ret)
 188                 return ret;
 189
 190         return strlen(buf);
 191 }
 192
 193 /**
 194  * lbs_prb_rsp_limit_get - Get function for sysfs attribute prb_rsp_limit
 195  * @dev: the &struct device
 196  * @attr: device attributes
 197  * @buf: buffer where data will be returned
 198  */
 199 static ssize_t lbs_prb_rsp_limit_get(struct device *dev,
 200                 struct device_attribute *attr, char *buf)
 201 {
 202         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 203         struct cmd_ds_mesh_access mesh_access;
 204         int ret;
 205         u32 retry_limit;
 206
 207         memset(&mesh_access, 0, sizeof(mesh_access));
 208         mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET);
 209
 210         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
 211                         &mesh_access);
 212         if (ret)
 213                 return ret;
 214
 215         retry_limit = le32_to_cpu(mesh_access.data[1]);
 216         return snprintf(buf, 10, "%d\n", retry_limit);
 217 }
 218
 219 /**
 220  * lbs_prb_rsp_limit_set - Set function for sysfs attribute prb_rsp_limit
 221  * @dev: the &struct device
 222  * @attr: device attributes
 223  * @buf: buffer that contains new attribute value
 224  * @count: size of buffer
 225  */
 226 static ssize_t lbs_prb_rsp_limit_set(struct device *dev,
 227                 struct device_attribute *attr, const char *buf, size_t count)
 228 {
 229         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 230         struct cmd_ds_mesh_access mesh_access;
 231         int ret;
 232         unsigned long retry_limit;
 233
 234         memset(&mesh_access, 0, sizeof(mesh_access));
 235         mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET);
 236
 237         ret = kstrtoul(buf, 10, &retry_limit);
 238         if (ret)
 239                 return ret;
 240         if (retry_limit > 15)
 241                 return -ENOTSUPP;
 242
 243         mesh_access.data[1] = cpu_to_le32(retry_limit);
 244
 245         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
 246                         &mesh_access);
 247         if (ret)
 248                 return ret;
 249
 250         return strlen(buf);
 251 }
 252
 253 /**
 254  * lbs_mesh_get - Get function for sysfs attribute mesh
 255  * @dev: the &struct device
 256  * @attr: device attributes
 257  * @buf: buffer where data will be returned
 258  */
 259 static ssize_t lbs_mesh_get(struct device *dev,
 260                 struct device_attribute *attr, char * buf)
 261 {
 262         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 263         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 264 }
 265
 266 /**
 267  * lbs_mesh_set - Set function for sysfs attribute mesh
 268  * @dev: the &struct device
 269  * @attr: device attributes
 270  * @buf: buffer that contains new attribute value
 271  * @count: size of buffer
 272  */
 273 static ssize_t lbs_mesh_set(struct device *dev,
 274                 struct device_attribute *attr, const char * buf, size_t count)
 275 {
 276         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 277         int enable;
 278
 279         sscanf(buf, "%x", &enable);
 280         enable = !!enable;
 281         if (enable == !!priv->mesh_dev)
 282                 return count;
 283
 284         if (enable)
 285                 lbs_add_mesh(priv);
 286         else
 287                 lbs_remove_mesh(priv);
 288
 289         return count;
 290 }
 291
 292 /*
 293  * lbs_mesh attribute to be exported per ethX interface
 294  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 295  */
 296 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 297
 298 /*
 299  * anycast_mask attribute to be exported per mshX interface
 300  * through sysfs (/sys/class/net/mshX/anycast_mask)
 301  */
 302 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 303
 304 /*
 305  * prb_rsp_limit attribute to be exported per mshX interface
 306  * through sysfs (/sys/class/net/mshX/prb_rsp_limit)
 307  */
 308 static DEVICE_ATTR(prb_rsp_limit, 0644, lbs_prb_rsp_limit_get,
 309                 lbs_prb_rsp_limit_set);
 310
 311 static struct attribute *lbs_mesh_sysfs_entries[] = {
 312         &dev_attr_anycast_mask.attr,
 313         &dev_attr_prb_rsp_limit.attr,
 314         NULL,
 315 };
 316
 317 static const struct attribute_group lbs_mesh_attr_group = {
 318         .attrs = lbs_mesh_sysfs_entries,
 319 };
 320
 321
 322 /***************************************************************************
 323  * Persistent configuration support
 324  */
 325
 326 static int mesh_get_default_parameters(struct device *dev,
 327                                        struct mrvl_mesh_defaults *defs)
 328 {
 329         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 330         struct cmd_ds_mesh_config cmd;
 331         int ret;
 332
 333         memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
 334         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_GET,
 335                                    CMD_TYPE_MESH_GET_DEFAULTS);
 336
 337         if (ret)
 338                 return -EOPNOTSUPP;
 339
 340         memcpy(defs, &cmd.data[0], sizeof(struct mrvl_mesh_defaults));
 341
 342         return 0;
 343 }
 344
 345 /**
 346  * bootflag_get - Get function for sysfs attribute bootflag
 347  * @dev: the &struct device
 348  * @attr: device attributes
 349  * @buf: buffer where data will be returned
 350  */
 351 static ssize_t bootflag_get(struct device *dev,
 352                             struct device_attribute *attr, char *buf)
 353 {
 354         struct mrvl_mesh_defaults defs;
 355         int ret;
 356
 357         ret = mesh_get_default_parameters(dev, &defs);
 358
 359         if (ret)
 360                 return ret;
 361
 362         return snprintf(buf, 12, "%d\n", le32_to_cpu(defs.bootflag));
 363 }
 364
 365 /**
 366  * bootflag_set - Set function for sysfs attribute bootflag
 367  * @dev: the &struct device
 368  * @attr: device attributes
 369  * @buf: buffer that contains new attribute value
 370  * @count: size of buffer
 371  */
 372 static ssize_t bootflag_set(struct device *dev, struct device_attribute *attr,
 373                             const char *buf, size_t count)
 374 {
 375         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 376         struct cmd_ds_mesh_config cmd;
 377         uint32_t datum;
 378         int ret;
 379
 380         memset(&cmd, 0, sizeof(cmd));
 381         ret = sscanf(buf, "%d", &datum);
 382         if ((ret != 1) || (datum > 1))
 383                 return -EINVAL;
 384
 385         *((__le32 *)&cmd.data[0]) = cpu_to_le32(!!datum);
 386         cmd.length = cpu_to_le16(sizeof(uint32_t));
 387         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 388                                    CMD_TYPE_MESH_SET_BOOTFLAG);
 389         if (ret)
 390                 return ret;
 391
 392         return strlen(buf);
 393 }
 394
 395 /**
 396  * boottime_get - Get function for sysfs attribute boottime
 397  * @dev: the &struct device
 398  * @attr: device attributes
 399  * @buf: buffer where data will be returned
 400  */
 401 static ssize_t boottime_get(struct device *dev,
 402                             struct device_attribute *attr, char *buf)
 403 {
 404         struct mrvl_mesh_defaults defs;
 405         int ret;
 406
 407         ret = mesh_get_default_parameters(dev, &defs);
 408
 409         if (ret)
 410                 return ret;
 411
 412         return snprintf(buf, 12, "%d\n", defs.boottime);
 413 }
 414
 415 /**
 416  * boottime_set - Set function for sysfs attribute boottime
 417  * @dev: the &struct device
 418  * @attr: device attributes
 419  * @buf: buffer that contains new attribute value
 420  * @count: size of buffer
 421  */
 422 static ssize_t boottime_set(struct device *dev,
 423                 struct device_attribute *attr, const char *buf, size_t count)
 424 {
 425         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 426         struct cmd_ds_mesh_config cmd;
 427         uint32_t datum;
 428         int ret;
 429
 430         memset(&cmd, 0, sizeof(cmd));
 431         ret = sscanf(buf, "%d", &datum);
 432         if ((ret != 1) || (datum > 255))
 433                 return -EINVAL;
 434
 435         /* A too small boot time will result in the device booting into
 436          * standalone (no-host) mode before the host can take control of it,
 437          * so the change will be hard to revert.  This may be a desired
 438          * feature (e.g to configure a very fast boot time for devices that
 439          * will not be attached to a host), but dangerous.  So I'm enforcing a
 440          * lower limit of 20 seconds:  remove and recompile the driver if this
 441          * does not work for you.
 442          */
 443         datum = (datum < 20) ? 20 : datum;
 444         cmd.data[0] = datum;
 445         cmd.length = cpu_to_le16(sizeof(uint8_t));
 446         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 447                                    CMD_TYPE_MESH_SET_BOOTTIME);
 448         if (ret)
 449                 return ret;
 450
 451         return strlen(buf);
 452 }
 453
 454 /**
 455  * channel_get - Get function for sysfs attribute channel
 456  * @dev: the &struct device
 457  * @attr: device attributes
 458  * @buf: buffer where data will be returned
 459  */
 460 static ssize_t channel_get(struct device *dev,
 461                            struct device_attribute *attr, char *buf)
 462 {
 463         struct mrvl_mesh_defaults defs;
 464         int ret;
 465
 466         ret = mesh_get_default_parameters(dev, &defs);
 467
 468         if (ret)
 469                 return ret;
 470
 471         return snprintf(buf, 12, "%d\n", le16_to_cpu(defs.channel));
 472 }
 473
 474 /**
 475  * channel_set - Set function for sysfs attribute channel
 476  * @dev: the &struct device
 477  * @attr: device attributes
 478  * @buf: buffer that contains new attribute value
 479  * @count: size of buffer
 480  */
 481 static ssize_t channel_set(struct device *dev, struct device_attribute *attr,
 482                            const char *buf, size_t count)
 483 {
 484         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 485         struct cmd_ds_mesh_config cmd;
 486         uint32_t datum;
 487         int ret;
 488
 489         memset(&cmd, 0, sizeof(cmd));
 490         ret = sscanf(buf, "%d", &datum);
 491         if (ret != 1 || datum < 1 || datum > 11)
 492                 return -EINVAL;
 493
 494         *((__le16 *)&cmd.data[0]) = cpu_to_le16(datum);
 495         cmd.length = cpu_to_le16(sizeof(uint16_t));
 496         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 497                                    CMD_TYPE_MESH_SET_DEF_CHANNEL);
 498         if (ret)
 499                 return ret;
 500
 501         return strlen(buf);
 502 }
 503
 504 /**
 505  * mesh_id_get - Get function for sysfs attribute mesh_id
 506  * @dev: the &struct device
 507  * @attr: device attributes
 508  * @buf: buffer where data will be returned
 509  */
 510 static ssize_t mesh_id_get(struct device *dev, struct device_attribute *attr,
 511                            char *buf)
 512 {
 513         struct mrvl_mesh_defaults defs;
 514         int ret;
 515
 516         ret = mesh_get_default_parameters(dev, &defs);
 517
 518         if (ret)
 519                 return ret;
 520
 521         if (defs.meshie.val.mesh_id_len > IEEE80211_MAX_SSID_LEN) {
 522                 dev_err(dev, "inconsistent mesh ID length\n");
 523                 defs.meshie.val.mesh_id_len = IEEE80211_MAX_SSID_LEN;
 524         }
 525
 526         memcpy(buf, defs.meshie.val.mesh_id, defs.meshie.val.mesh_id_len);
 527         buf[defs.meshie.val.mesh_id_len] = '\n';
 528         buf[defs.meshie.val.mesh_id_len + 1] = '\0';
 529
 530         return defs.meshie.val.mesh_id_len + 1;
 531 }
 532
 533 /**
 534  * mesh_id_set - Set function for sysfs attribute mesh_id
 535  * @dev: the &struct device
 536  * @attr: device attributes
 537  * @buf: buffer that contains new attribute value
 538  * @count: size of buffer
 539  */
 540 static ssize_t mesh_id_set(struct device *dev, struct device_attribute *attr,
 541                            const char *buf, size_t count)
 542 {
 543         struct cmd_ds_mesh_config cmd;
 544         struct mrvl_mesh_defaults defs;
 545         struct mrvl_meshie *ie;
 546         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 547         int len;
 548         int ret;
 549
 550         if (count < 2 || count > IEEE80211_MAX_SSID_LEN + 1)
 551                 return -EINVAL;
 552
 553         memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
 554         ie = (struct mrvl_meshie *) &cmd.data[0];
 555
 556         /* fetch all other Information Element parameters */
 557         ret = mesh_get_default_parameters(dev, &defs);
 558
 559         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 560
 561         /* transfer IE elements */
 562         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 563
 564         len = count - 1;
 565         memcpy(ie->val.mesh_id, buf, len);
 566         /* SSID len */
 567         ie->val.mesh_id_len = len;
 568         /* IE len */
 569         ie->len = sizeof(struct mrvl_meshie_val) - IEEE80211_MAX_SSID_LEN + len;
 570
 571         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 572                                    CMD_TYPE_MESH_SET_MESH_IE);
 573         if (ret)
 574                 return ret;
 575
 576         return strlen(buf);
 577 }
 578
 579 /**
 580  * protocol_id_get - Get function for sysfs attribute protocol_id
 581  * @dev: the &struct device
 582  * @attr: device attributes
 583  * @buf: buffer where data will be returned
 584  */
 585 static ssize_t protocol_id_get(struct device *dev,
 586                                struct device_attribute *attr, char *buf)
 587 {
 588         struct mrvl_mesh_defaults defs;
 589         int ret;
 590
 591         ret = mesh_get_default_parameters(dev, &defs);
 592
 593         if (ret)
 594                 return ret;
 595
 596         return snprintf(buf, 5, "%d\n", defs.meshie.val.active_protocol_id);
 597 }
 598
 599 /**
 600  * protocol_id_set - Set function for sysfs attribute protocol_id
 601  * @dev: the &struct device
 602  * @attr: device attributes
 603  * @buf: buffer that contains new attribute value
 604  * @count: size of buffer
 605  */
 606 static ssize_t protocol_id_set(struct device *dev,
 607                 struct device_attribute *attr, const char *buf, size_t count)
 608 {
 609         struct cmd_ds_mesh_config cmd;
 610         struct mrvl_mesh_defaults defs;
 611         struct mrvl_meshie *ie;
 612         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 613         uint32_t datum;
 614         int ret;
 615
 616         memset(&cmd, 0, sizeof(cmd));
 617         ret = sscanf(buf, "%d", &datum);
 618         if ((ret != 1) || (datum > 255))
 619                 return -EINVAL;
 620
 621         /* fetch all other Information Element parameters */
 622         ret = mesh_get_default_parameters(dev, &defs);
 623
 624         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 625
 626         /* transfer IE elements */
 627         ie = (struct mrvl_meshie *) &cmd.data[0];
 628         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 629         /* update protocol id */
 630         ie->val.active_protocol_id = datum;
 631
 632         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 633                                    CMD_TYPE_MESH_SET_MESH_IE);
 634         if (ret)
 635                 return ret;
 636
 637         return strlen(buf);
 638 }
 639
 640 /**
 641  * metric_id_get - Get function for sysfs attribute metric_id
 642  * @dev: the &struct device
 643  * @attr: device attributes
 644  * @buf: buffer where data will be returned
 645  */
 646 static ssize_t metric_id_get(struct device *dev,
 647                 struct device_attribute *attr, char *buf)
 648 {
 649         struct mrvl_mesh_defaults defs;
 650         int ret;
 651
 652         ret = mesh_get_default_parameters(dev, &defs);
 653
 654         if (ret)
 655                 return ret;
 656
 657         return snprintf(buf, 5, "%d\n", defs.meshie.val.active_metric_id);
 658 }
 659
 660 /**
 661  * metric_id_set - Set function for sysfs attribute metric_id
 662  * @dev: the &struct device
 663  * @attr: device attributes
 664  * @buf: buffer that contains new attribute value
 665  * @count: size of buffer
 666  */
 667 static ssize_t metric_id_set(struct device *dev, struct device_attribute *attr,
 668                              const char *buf, size_t count)
 669 {
 670         struct cmd_ds_mesh_config cmd;
 671         struct mrvl_mesh_defaults defs;
 672         struct mrvl_meshie *ie;
 673         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 674         uint32_t datum;
 675         int ret;
 676
 677         memset(&cmd, 0, sizeof(cmd));
 678         ret = sscanf(buf, "%d", &datum);
 679         if ((ret != 1) || (datum > 255))
 680                 return -EINVAL;
 681
 682         /* fetch all other Information Element parameters */
 683         ret = mesh_get_default_parameters(dev, &defs);
 684
 685         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 686
 687         /* transfer IE elements */
 688         ie = (struct mrvl_meshie *) &cmd.data[0];
 689         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 690         /* update metric id */
 691         ie->val.active_metric_id = datum;
 692
 693         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 694                                    CMD_TYPE_MESH_SET_MESH_IE);
 695         if (ret)
 696                 return ret;
 697
 698         return strlen(buf);
 699 }
 700
 701 /**
 702  * capability_get - Get function for sysfs attribute capability
 703  * @dev: the &struct device
 704  * @attr: device attributes
 705  * @buf: buffer where data will be returned
 706  */
 707 static ssize_t capability_get(struct device *dev,
 708                 struct device_attribute *attr, char *buf)
 709 {
 710         struct mrvl_mesh_defaults defs;
 711         int ret;
 712
 713         ret = mesh_get_default_parameters(dev, &defs);
 714
 715         if (ret)
 716                 return ret;
 717
 718         return snprintf(buf, 5, "%d\n", defs.meshie.val.mesh_capability);
 719 }
 720
 721 /**
 722  * capability_set - Set function for sysfs attribute capability
 723  * @dev: the &struct device
 724  * @attr: device attributes
 725  * @buf: buffer that contains new attribute value
 726  * @count: size of buffer
 727  */
 728 static ssize_t capability_set(struct device *dev, struct device_attribute *attr,
 729                               const char *buf, size_t count)
 730 {
 731         struct cmd_ds_mesh_config cmd;
 732         struct mrvl_mesh_defaults defs;
 733         struct mrvl_meshie *ie;
 734         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 735         uint32_t datum;
 736         int ret;
 737
 738         memset(&cmd, 0, sizeof(cmd));
 739         ret = sscanf(buf, "%d", &datum);
 740         if ((ret != 1) || (datum > 255))
 741                 return -EINVAL;
 742
 743         /* fetch all other Information Element parameters */
 744         ret = mesh_get_default_parameters(dev, &defs);
 745
 746         cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
 747
 748         /* transfer IE elements */
 749         ie = (struct mrvl_meshie *) &cmd.data[0];
 750         memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
 751         /* update value */
 752         ie->val.mesh_capability = datum;
 753
 754         ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
 755                                    CMD_TYPE_MESH_SET_MESH_IE);
 756         if (ret)
 757                 return ret;
 758
 759         return strlen(buf);
 760 }
 761
 762
 763 static DEVICE_ATTR(bootflag, 0644, bootflag_get, bootflag_set);
 764 static DEVICE_ATTR(boottime, 0644, boottime_get, boottime_set);
 765 static DEVICE_ATTR(channel, 0644, channel_get, channel_set);
 766 static DEVICE_ATTR(mesh_id, 0644, mesh_id_get, mesh_id_set);
 767 static DEVICE_ATTR(protocol_id, 0644, protocol_id_get, protocol_id_set);
 768 static DEVICE_ATTR(metric_id, 0644, metric_id_get, metric_id_set);
 769 static DEVICE_ATTR(capability, 0644, capability_get, capability_set);
 770
 771 static struct attribute *boot_opts_attrs[] = {
 772         &dev_attr_bootflag.attr,
 773         &dev_attr_boottime.attr,
 774         &dev_attr_channel.attr,
 775         NULL
 776 };
 777
 778 static const struct attribute_group boot_opts_group = {
 779         .name = "boot_options",
 780         .attrs = boot_opts_attrs,
 781 };
 782
 783 static struct attribute *mesh_ie_attrs[] = {
 784         &dev_attr_mesh_id.attr,
 785         &dev_attr_protocol_id.attr,
 786         &dev_attr_metric_id.attr,
 787         &dev_attr_capability.attr,
 788         NULL
 789 };
 790
 791 static const struct attribute_group mesh_ie_group = {
 792         .name = "mesh_ie",
 793         .attrs = mesh_ie_attrs,
 794 };
 795
 796 static void lbs_persist_config_init(struct net_device *dev)
 797 {
 798         int ret;
 799         ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
 800         ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
 801 }
 802
 803 static void lbs_persist_config_remove(struct net_device *dev)
 804 {
 805         sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group);
 806         sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group);
 807 }
 808
 809
 810 /***************************************************************************
 811  * Initializing and starting, stopping mesh
 812  */
 813
 814 /*
 815  * Check mesh FW version and appropriately send the mesh start
 816  * command
 817  */
 818 int lbs_init_mesh(struct lbs_private *priv)
 819 {
 820         int ret = 0;
 821
 822         /* Determine mesh_fw_ver from fwrelease and fwcapinfo */
 823         /* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
 824         /* 5.110.22 have mesh command with 0xa3 command id */
 825         /* 10.0.0.p0 FW brings in mesh config command with different id */
 826         /* Check FW version MSB and initialize mesh_fw_ver */
 827         if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5) {
 828                 /* Enable mesh, if supported, and work out which TLV it uses.
 829                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
 830                    0x100 + 37 is the official value used in 5.110.21.pXX
 831                    but we check them in that order because 20.pXX doesn't
 832                    give an error -- it just silently fails. */
 833
 834                 /* 5.110.20.pXX firmware will fail the command if the channel
 835                    doesn't match the existing channel. But only if the TLV
 836                    is correct. If the channel is wrong, _BOTH_ versions will
 837                    give an error to 0x100+291, and allow 0x100+37 to succeed.
 838                    It's just that 5.110.20.pXX will not have done anything
 839                    useful */
 840
 841                 priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID;
 842                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) {
 843                         priv->mesh_tlv = TLV_TYPE_MESH_ID;
 844                         if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
 845                                 priv->mesh_tlv = 0;
 846                 }
 847         } else
 848         if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
 849                 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK)) {
 850                 /* 10.0.0.pXX new firmwares should succeed with TLV
 851                  * 0x100+37; Do not invoke command with old TLV.
 852                  */
 853                 priv->mesh_tlv = TLV_TYPE_MESH_ID;
 854                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
 855                         priv->mesh_tlv = 0;
 856         }
 857
 858         /* Stop meshing until interface is brought up */
 859         lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, 1);
 860
 861         if (priv->mesh_tlv) {
 862                 sprintf(priv->mesh_ssid, "mesh");
 863                 priv->mesh_ssid_len = 4;
 864                 ret = 1;
 865         }
 866
 867         return ret;
 868 }
 869
 870 void lbs_start_mesh(struct lbs_private *priv)
 871 {
 872         lbs_add_mesh(priv);
 873
 874         if (device_create_file(&priv->dev->dev, &dev_attr_lbs_mesh))
 875                 netdev_err(priv->dev, "cannot register lbs_mesh attribute\n");
 876 }
 877
 878 int lbs_deinit_mesh(struct lbs_private *priv)
 879 {
 880         struct net_device *dev = priv->dev;
 881         int ret = 0;
 882
 883         if (priv->mesh_tlv) {
 884                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
 885                 ret = 1;
 886         }
 887
 888         return ret;
 889 }
 890
 891
 892 /**
 893  * lbs_mesh_stop - close the mshX interface
 894  *
 895  * @dev:        A pointer to &net_device structure
 896  * returns:     0
 897  */
 898 static int lbs_mesh_stop(struct net_device *dev)
 899 {
 900         struct lbs_private *priv = dev->ml_priv;
 901
 902         lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
 903                 lbs_mesh_get_channel(priv));
 904
 905         spin_lock_irq(&priv->driver_lock);
 906
 907         netif_stop_queue(dev);
 908         netif_carrier_off(dev);
 909
 910         spin_unlock_irq(&priv->driver_lock);
 911
 912         lbs_update_mcast(priv);
 913         if (!lbs_iface_active(priv))
 914                 lbs_stop_iface(priv);
 915
 916         return 0;
 917 }
 918
 919 /**
 920  * lbs_mesh_dev_open - open the mshX interface
 921  *
 922  * @dev:        A pointer to &net_device structure
 923  * returns:     0 or -EBUSY if monitor mode active
 924  */
 925 static int lbs_mesh_dev_open(struct net_device *dev)
 926 {
 927         struct lbs_private *priv = dev->ml_priv;
 928         int ret = 0;
 929
 930         if (!priv->iface_running) {
 931                 ret = lbs_start_iface(priv);
 932                 if (ret)
 933                         goto out;
 934         }
 935
 936         spin_lock_irq(&priv->driver_lock);
 937
 938         if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) {
 939                 ret = -EBUSY;
 940                 spin_unlock_irq(&priv->driver_lock);
 941                 goto out;
 942         }
 943
 944         netif_carrier_on(dev);
 945
 946         if (!priv->tx_pending_len)
 947                 netif_wake_queue(dev);
 948
 949         spin_unlock_irq(&priv->driver_lock);
 950
 951         ret = lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
 952                 lbs_mesh_get_channel(priv));
 953
 954 out:
 955         return ret;
 956 }
 957
 958 static const struct net_device_ops mesh_netdev_ops = {
 959         .ndo_open               = lbs_mesh_dev_open,
 960         .ndo_stop               = lbs_mesh_stop,
 961         .ndo_start_xmit         = lbs_hard_start_xmit,
 962         .ndo_set_mac_address    = lbs_set_mac_address,
 963         .ndo_set_rx_mode        = lbs_set_multicast_list,
 964 };
 965
 966 /**
 967  * lbs_add_mesh - add mshX interface
 968  *
 969  * @priv:       A pointer to the &struct lbs_private structure
 970  * returns:     0 if successful, -X otherwise
 971  */
 972 static int lbs_add_mesh(struct lbs_private *priv)
 973 {
 974         struct net_device *mesh_dev = NULL;
 975         struct wireless_dev *mesh_wdev;
 976         int ret = 0;
 977
 978         /* Allocate a virtual mesh device */
 979         mesh_wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
 980         if (!mesh_wdev) {
 981                 lbs_deb_mesh("init mshX wireless device failed\n");
 982                 ret = -ENOMEM;
 983                 goto done;
 984         }
 985
 986         mesh_dev = alloc_netdev(0, "msh%d", NET_NAME_UNKNOWN, ether_setup);
 987         if (!mesh_dev) {
 988                 lbs_deb_mesh("init mshX device failed\n");
 989                 ret = -ENOMEM;
 990                 goto err_free_wdev;
 991         }
 992
 993         mesh_wdev->iftype = NL80211_IFTYPE_MESH_POINT;
 994         mesh_wdev->wiphy = priv->wdev->wiphy;
 995         mesh_wdev->netdev = mesh_dev;
 996
 997         mesh_dev->ml_priv = priv;
 998         mesh_dev->ieee80211_ptr = mesh_wdev;
 999         priv->mesh_dev = mesh_dev;
1000
1001         mesh_dev->netdev_ops = &mesh_netdev_ops;
1002         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1003         eth_hw_addr_inherit(mesh_dev, priv->dev);
1004
1005         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1006
1007         mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1008         /* Register virtual mesh interface */
1009         ret = register_netdev(mesh_dev);
1010         if (ret) {
1011                 pr_err("cannot register mshX virtual interface\n");
1012                 goto err_free_netdev;
1013         }
1014
1015         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1016         if (ret)
1017                 goto err_unregister;
1018
1019         lbs_persist_config_init(mesh_dev);
1020
1021         /* Everything successful */
1022         ret = 0;
1023         goto done;
1024
1025 err_unregister:
1026         unregister_netdev(mesh_dev);
1027
1028 err_free_netdev:
1029         free_netdev(mesh_dev);
1030
1031 err_free_wdev:
1032         kfree(mesh_wdev);
1033
1034 done:
1035         return ret;
1036 }
1037
1038 void lbs_remove_mesh(struct lbs_private *priv)
1039 {
1040         struct net_device *mesh_dev;
1041
1042         mesh_dev = priv->mesh_dev;
1043         if (!mesh_dev)
1044                 return;
1045
1046         netif_stop_queue(mesh_dev);
1047         netif_carrier_off(mesh_dev);
1048         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1049         lbs_persist_config_remove(mesh_dev);
1050         unregister_netdev(mesh_dev);
1051         priv->mesh_dev = NULL;
1052         kfree(mesh_dev->ieee80211_ptr);
1053         free_netdev(mesh_dev);
1054 }
1055
1056
1057 /***************************************************************************
1058  * Sending and receiving
1059  */
1060 struct net_device *lbs_mesh_set_dev(struct lbs_private *priv,
1061         struct net_device *dev, struct rxpd *rxpd)
1062 {
1063         if (priv->mesh_dev) {
1064                 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) {
1065                         if (rxpd->rx_control & RxPD_MESH_FRAME)
1066                                 dev = priv->mesh_dev;
1067                 } else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) {
1068                         if (rxpd->u.bss.bss_num == MESH_IFACE_ID)
1069                                 dev = priv->mesh_dev;
1070                 }
1071         }
1072         return dev;
1073 }
1074
1075
1076 void lbs_mesh_set_txpd(struct lbs_private *priv,
1077         struct net_device *dev, struct txpd *txpd)
1078 {
1079         if (dev == priv->mesh_dev) {
1080                 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID)
1081                         txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME);
1082                 else if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
1083                         txpd->u.bss.bss_num = MESH_IFACE_ID;
1084         }
1085 }
1086
1087
1088 /***************************************************************************
1089  * Ethtool related
1090  */
1091
1092 static const char mesh_stat_strings[MESH_STATS_NUM][ETH_GSTRING_LEN] = {
1093         "drop_duplicate_bcast",
1094         "drop_ttl_zero",
1095         "drop_no_fwd_route",
1096         "drop_no_buffers",
1097         "fwded_unicast_cnt",
1098         "fwded_bcast_cnt",
1099         "drop_blind_table",
1100         "tx_failed_cnt"
1101 };
1102
1103 void lbs_mesh_ethtool_get_stats(struct net_device *dev,
1104         struct ethtool_stats *stats, uint64_t *data)
1105 {
1106         struct lbs_private *priv = dev->ml_priv;
1107         struct cmd_ds_mesh_access mesh_access;
1108         int ret;
1109
1110         /* Get Mesh Statistics */
1111         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_STATS, &mesh_access);
1112
1113         if (ret) {
1114                 memset(data, 0, MESH_STATS_NUM*(sizeof(uint64_t)));
1115                 return;
1116         }
1117
1118         priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]);
1119         priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]);
1120         priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]);
1121         priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]);
1122         priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]);
1123         priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]);
1124         priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]);
1125         priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]);
1126
1127         data[0] = priv->mstats.fwd_drop_rbt;
1128         data[1] = priv->mstats.fwd_drop_ttl;
1129         data[2] = priv->mstats.fwd_drop_noroute;
1130         data[3] = priv->mstats.fwd_drop_nobuf;
1131         data[4] = priv->mstats.fwd_unicast_cnt;
1132         data[5] = priv->mstats.fwd_bcast_cnt;
1133         data[6] = priv->mstats.drop_blind;
1134         data[7] = priv->mstats.tx_failed_cnt;
1135 }
1136
1137 int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset)
1138 {
1139         struct lbs_private *priv = dev->ml_priv;
1140
1141         if (sset == ETH_SS_STATS && dev == priv->mesh_dev)
1142                 return MESH_STATS_NUM;
1143
1144         return -EOPNOTSUPP;
1145 }
1146
1147 void lbs_mesh_ethtool_get_strings(struct net_device *dev,
1148         uint32_t stringset, uint8_t *s)
1149 {
1150         switch (stringset) {
1151         case ETH_SS_STATS:
1152                 memcpy(s, mesh_stat_strings, sizeof(mesh_stat_strings));
1153                 break;
1154         }
1155 }