1/* 2 * Implement cfg80211 ("iw") support. 3 * 4 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany 5 * Holger Schurig <hs4233@mail.mn-solutions.de> 6 * 7 */ 8 9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11#include <linux/hardirq.h> 12#include <linux/sched.h> 13#include <linux/wait.h> 14#include <linux/slab.h> 15#include <linux/ieee80211.h> 16#include <net/cfg80211.h> 17#include <asm/unaligned.h> 18 19#include "decl.h" 20#include "cfg.h" 21#include "cmd.h" 22#include "mesh.h" 23 24 25#define CHAN2G(_channel, _freq, _flags) { \ 26 .band = IEEE80211_BAND_2GHZ, \ 27 .center_freq = (_freq), \ 28 .hw_value = (_channel), \ 29 .flags = (_flags), \ 30 .max_antenna_gain = 0, \ 31 .max_power = 30, \ 32} 33 34static struct ieee80211_channel lbs_2ghz_channels[] = { 35 CHAN2G(1, 2412, 0), 36 CHAN2G(2, 2417, 0), 37 CHAN2G(3, 2422, 0), 38 CHAN2G(4, 2427, 0), 39 CHAN2G(5, 2432, 0), 40 CHAN2G(6, 2437, 0), 41 CHAN2G(7, 2442, 0), 42 CHAN2G(8, 2447, 0), 43 CHAN2G(9, 2452, 0), 44 CHAN2G(10, 2457, 0), 45 CHAN2G(11, 2462, 0), 46 CHAN2G(12, 2467, 0), 47 CHAN2G(13, 2472, 0), 48 CHAN2G(14, 2484, 0), 49}; 50 51#define RATETAB_ENT(_rate, _hw_value, _flags) { \ 52 .bitrate = (_rate), \ 53 .hw_value = (_hw_value), \ 54 .flags = (_flags), \ 55} 56 57 58/* Table 6 in section 3.2.1.1 */ 59static struct ieee80211_rate lbs_rates[] = { 60 RATETAB_ENT(10, 0, 0), 61 RATETAB_ENT(20, 1, 0), 62 RATETAB_ENT(55, 2, 0), 63 RATETAB_ENT(110, 3, 0), 64 RATETAB_ENT(60, 9, 0), 65 RATETAB_ENT(90, 6, 0), 66 RATETAB_ENT(120, 7, 0), 67 RATETAB_ENT(180, 8, 0), 68 RATETAB_ENT(240, 9, 0), 69 RATETAB_ENT(360, 10, 0), 70 RATETAB_ENT(480, 11, 0), 71 RATETAB_ENT(540, 12, 0), 72}; 73 74static struct ieee80211_supported_band lbs_band_2ghz = { 75 .channels = lbs_2ghz_channels, 76 .n_channels = ARRAY_SIZE(lbs_2ghz_channels), 77 .bitrates = lbs_rates, 78 .n_bitrates = ARRAY_SIZE(lbs_rates), 79}; 80 81 82static const u32 cipher_suites[] = { 83 WLAN_CIPHER_SUITE_WEP40, 84 WLAN_CIPHER_SUITE_WEP104, 85 WLAN_CIPHER_SUITE_TKIP, 86 WLAN_CIPHER_SUITE_CCMP, 87}; 88 89/* Time to stay on the channel */ 90#define LBS_DWELL_PASSIVE 100 91#define LBS_DWELL_ACTIVE 40 92 93 94/*************************************************************************** 95 * Misc utility functions 96 * 97 * TLVs are Marvell specific. They are very similar to IEs, they have the 98 * same structure: type, length, data*. The only difference: for IEs, the 99 * type and length are u8, but for TLVs they're __le16. 100 */ 101 102/* 103 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1 104 * in the firmware spec 105 */ 106static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type) 107{ 108 int ret = -ENOTSUPP; 109 110 switch (auth_type) { 111 case NL80211_AUTHTYPE_OPEN_SYSTEM: 112 case NL80211_AUTHTYPE_SHARED_KEY: 113 ret = auth_type; 114 break; 115 case NL80211_AUTHTYPE_AUTOMATIC: 116 ret = NL80211_AUTHTYPE_OPEN_SYSTEM; 117 break; 118 case NL80211_AUTHTYPE_NETWORK_EAP: 119 ret = 0x80; 120 break; 121 default: 122 /* silence compiler */ 123 break; 124 } 125 return ret; 126} 127 128 129/* 130 * Various firmware commands need the list of supported rates, but with 131 * the hight-bit set for basic rates 132 */ 133static int lbs_add_rates(u8 *rates) 134{ 135 size_t i; 136 137 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) { 138 u8 rate = lbs_rates[i].bitrate / 5; 139 if (rate == 0x02 || rate == 0x04 || 140 rate == 0x0b || rate == 0x16) 141 rate |= 0x80; 142 rates[i] = rate; 143 } 144 return ARRAY_SIZE(lbs_rates); 145} 146 147 148/*************************************************************************** 149 * TLV utility functions 150 * 151 * TLVs are Marvell specific. They are very similar to IEs, they have the 152 * same structure: type, length, data*. The only difference: for IEs, the 153 * type and length are u8, but for TLVs they're __le16. 154 */ 155 156 157/* 158 * Add ssid TLV 159 */ 160#define LBS_MAX_SSID_TLV_SIZE \ 161 (sizeof(struct mrvl_ie_header) \ 162 + IEEE80211_MAX_SSID_LEN) 163 164static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len) 165{ 166 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv; 167 168 /* 169 * TLV-ID SSID 00 00 170 * length 06 00 171 * ssid 4d 4e 54 45 53 54 172 */ 173 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID); 174 ssid_tlv->header.len = cpu_to_le16(ssid_len); 175 memcpy(ssid_tlv->ssid, ssid, ssid_len); 176 return sizeof(ssid_tlv->header) + ssid_len; 177} 178 179 180/* 181 * Add channel list TLV (section 8.4.2) 182 * 183 * Actual channel data comes from priv->wdev->wiphy->channels. 184 */ 185#define LBS_MAX_CHANNEL_LIST_TLV_SIZE \ 186 (sizeof(struct mrvl_ie_header) \ 187 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset))) 188 189static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv, 190 int last_channel, int active_scan) 191{ 192 int chanscanparamsize = sizeof(struct chanscanparamset) * 193 (last_channel - priv->scan_channel); 194 195 struct mrvl_ie_header *header = (void *) tlv; 196 197 /* 198 * TLV-ID CHANLIST 01 01 199 * length 0e 00 200 * channel 00 01 00 00 00 64 00 201 * radio type 00 202 * channel 01 203 * scan type 00 204 * min scan time 00 00 205 * max scan time 64 00 206 * channel 2 00 02 00 00 00 64 00 207 * 208 */ 209 210 header->type = cpu_to_le16(TLV_TYPE_CHANLIST); 211 header->len = cpu_to_le16(chanscanparamsize); 212 tlv += sizeof(struct mrvl_ie_header); 213 214 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel, 215 last_channel); */ 216 memset(tlv, 0, chanscanparamsize); 217 218 while (priv->scan_channel < last_channel) { 219 struct chanscanparamset *param = (void *) tlv; 220 221 param->radiotype = CMD_SCAN_RADIO_TYPE_BG; 222 param->channumber = 223 priv->scan_req->channels[priv->scan_channel]->hw_value; 224 if (active_scan) { 225 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE); 226 } else { 227 param->chanscanmode.passivescan = 1; 228 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE); 229 } 230 tlv += sizeof(struct chanscanparamset); 231 priv->scan_channel++; 232 } 233 return sizeof(struct mrvl_ie_header) + chanscanparamsize; 234} 235 236 237/* 238 * Add rates TLV 239 * 240 * The rates are in lbs_bg_rates[], but for the 802.11b 241 * rates the high bit is set. We add this TLV only because 242 * there's a firmware which otherwise doesn't report all 243 * APs in range. 244 */ 245#define LBS_MAX_RATES_TLV_SIZE \ 246 (sizeof(struct mrvl_ie_header) \ 247 + (ARRAY_SIZE(lbs_rates))) 248 249/* Adds a TLV with all rates the hardware supports */ 250static int lbs_add_supported_rates_tlv(u8 *tlv) 251{ 252 size_t i; 253 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv; 254 255 /* 256 * TLV-ID RATES 01 00 257 * length 0e 00 258 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 259 */ 260 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES); 261 tlv += sizeof(rate_tlv->header); 262 i = lbs_add_rates(tlv); 263 tlv += i; 264 rate_tlv->header.len = cpu_to_le16(i); 265 return sizeof(rate_tlv->header) + i; 266} 267 268/* Add common rates from a TLV and return the new end of the TLV */ 269static u8 * 270add_ie_rates(u8 *tlv, const u8 *ie, int *nrates) 271{ 272 int hw, ap, ap_max = ie[1]; 273 u8 hw_rate; 274 275 /* Advance past IE header */ 276 ie += 2; 277 278 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max); 279 280 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) { 281 hw_rate = lbs_rates[hw].bitrate / 5; 282 for (ap = 0; ap < ap_max; ap++) { 283 if (hw_rate == (ie[ap] & 0x7f)) { 284 *tlv++ = ie[ap]; 285 *nrates = *nrates + 1; 286 } 287 } 288 } 289 return tlv; 290} 291 292/* 293 * Adds a TLV with all rates the hardware *and* BSS supports. 294 */ 295static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss) 296{ 297 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv; 298 const u8 *rates_eid, *ext_rates_eid; 299 int n = 0; 300 301 rcu_read_lock(); 302 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES); 303 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES); 304 305 /* 306 * 01 00 TLV_TYPE_RATES 307 * 04 00 len 308 * 82 84 8b 96 rates 309 */ 310 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES); 311 tlv += sizeof(rate_tlv->header); 312 313 /* Add basic rates */ 314 if (rates_eid) { 315 tlv = add_ie_rates(tlv, rates_eid, &n); 316 317 /* Add extended rates, if any */ 318 if (ext_rates_eid) 319 tlv = add_ie_rates(tlv, ext_rates_eid, &n); 320 } else { 321 lbs_deb_assoc("assoc: bss had no basic rate IE\n"); 322 /* Fallback: add basic 802.11b rates */ 323 *tlv++ = 0x82; 324 *tlv++ = 0x84; 325 *tlv++ = 0x8b; 326 *tlv++ = 0x96; 327 n = 4; 328 } 329 rcu_read_unlock(); 330 331 rate_tlv->header.len = cpu_to_le16(n); 332 return sizeof(rate_tlv->header) + n; 333} 334 335 336/* 337 * Add auth type TLV. 338 * 339 * This is only needed for newer firmware (V9 and up). 340 */ 341#define LBS_MAX_AUTH_TYPE_TLV_SIZE \ 342 sizeof(struct mrvl_ie_auth_type) 343 344static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type) 345{ 346 struct mrvl_ie_auth_type *auth = (void *) tlv; 347 348 /* 349 * 1f 01 TLV_TYPE_AUTH_TYPE 350 * 01 00 len 351 * 01 auth type 352 */ 353 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE); 354 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header)); 355 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type)); 356 return sizeof(*auth); 357} 358 359 360/* 361 * Add channel (phy ds) TLV 362 */ 363#define LBS_MAX_CHANNEL_TLV_SIZE \ 364 sizeof(struct mrvl_ie_header) 365 366static int lbs_add_channel_tlv(u8 *tlv, u8 channel) 367{ 368 struct mrvl_ie_ds_param_set *ds = (void *) tlv; 369 370 /* 371 * 03 00 TLV_TYPE_PHY_DS 372 * 01 00 len 373 * 06 channel 374 */ 375 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS); 376 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header)); 377 ds->channel = channel; 378 return sizeof(*ds); 379} 380 381 382/* 383 * Add (empty) CF param TLV of the form: 384 */ 385#define LBS_MAX_CF_PARAM_TLV_SIZE \ 386 sizeof(struct mrvl_ie_header) 387 388static int lbs_add_cf_param_tlv(u8 *tlv) 389{ 390 struct mrvl_ie_cf_param_set *cf = (void *)tlv; 391 392 /* 393 * 04 00 TLV_TYPE_CF 394 * 06 00 len 395 * 00 cfpcnt 396 * 00 cfpperiod 397 * 00 00 cfpmaxduration 398 * 00 00 cfpdurationremaining 399 */ 400 cf->header.type = cpu_to_le16(TLV_TYPE_CF); 401 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header)); 402 return sizeof(*cf); 403} 404 405/* 406 * Add WPA TLV 407 */ 408#define LBS_MAX_WPA_TLV_SIZE \ 409 (sizeof(struct mrvl_ie_header) \ 410 + 128 /* TODO: I guessed the size */) 411 412static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len) 413{ 414 size_t tlv_len; 415 416 /* 417 * We need just convert an IE to an TLV. IEs use u8 for the header, 418 * u8 type 419 * u8 len 420 * u8[] data 421 * but TLVs use __le16 instead: 422 * __le16 type 423 * __le16 len 424 * u8[] data 425 */ 426 *tlv++ = *ie++; 427 *tlv++ = 0; 428 tlv_len = *tlv++ = *ie++; 429 *tlv++ = 0; 430 while (tlv_len--) 431 *tlv++ = *ie++; 432 /* the TLV is two bytes larger than the IE */ 433 return ie_len + 2; 434} 435 436/* 437 * Set Channel 438 */ 439 440static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy, 441 struct cfg80211_chan_def *chandef) 442{ 443 struct lbs_private *priv = wiphy_priv(wiphy); 444 int ret = -ENOTSUPP; 445 446 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d", 447 chandef->chan->center_freq, 448 cfg80211_get_chandef_type(chandef)); 449 450 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT) 451 goto out; 452 453 ret = lbs_set_channel(priv, chandef->chan->hw_value); 454 455 out: 456 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 457 return ret; 458} 459 460static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy, 461 struct net_device *netdev, 462 struct ieee80211_channel *channel) 463{ 464 struct lbs_private *priv = wiphy_priv(wiphy); 465 int ret = -ENOTSUPP; 466 467 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d", 468 netdev_name(netdev), channel->center_freq); 469 470 if (netdev != priv->mesh_dev) 471 goto out; 472 473 ret = lbs_mesh_set_channel(priv, channel->hw_value); 474 475 out: 476 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 477 return ret; 478} 479 480 481 482/* 483 * Scanning 484 */ 485 486/* 487 * When scanning, the firmware doesn't send a nul packet with the power-safe 488 * bit to the AP. So we cannot stay away from our current channel too long, 489 * otherwise we loose data. So take a "nap" while scanning every other 490 * while. 491 */ 492#define LBS_SCAN_BEFORE_NAP 4 493 494 495/* 496 * When the firmware reports back a scan-result, it gives us an "u8 rssi", 497 * which isn't really an RSSI, as it becomes larger when moving away from 498 * the AP. Anyway, we need to convert that into mBm. 499 */ 500#define LBS_SCAN_RSSI_TO_MBM(rssi) \ 501 ((-(int)rssi + 3)*100) 502 503static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy, 504 struct cmd_header *resp) 505{ 506 struct cfg80211_bss *bss; 507 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp; 508 int bsssize; 509 const u8 *pos; 510 const u8 *tsfdesc; 511 int tsfsize; 512 int i; 513 int ret = -EILSEQ; 514 515 lbs_deb_enter(LBS_DEB_CFG80211); 516 517 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize); 518 519 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n", 520 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size)); 521 522 if (scanresp->nr_sets == 0) { 523 ret = 0; 524 goto done; 525 } 526 527 /* 528 * The general layout of the scan response is described in chapter 529 * 5.7.1. Basically we have a common part, then any number of BSS 530 * descriptor sections. Finally we have section with the same number 531 * of TSFs. 532 * 533 * cmd_ds_802_11_scan_rsp 534 * cmd_header 535 * pos_size 536 * nr_sets 537 * bssdesc 1 538 * bssid 539 * rssi 540 * timestamp 541 * intvl 542 * capa 543 * IEs 544 * bssdesc 2 545 * bssdesc n 546 * MrvlIEtypes_TsfFimestamp_t 547 * TSF for BSS 1 548 * TSF for BSS 2 549 * TSF for BSS n 550 */ 551 552 pos = scanresp->bssdesc_and_tlvbuffer; 553 554 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer, 555 scanresp->bssdescriptsize); 556 557 tsfdesc = pos + bsssize; 558 tsfsize = 4 + 8 * scanresp->nr_sets; 559 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize); 560 561 /* Validity check: we expect a Marvell-Local TLV */ 562 i = get_unaligned_le16(tsfdesc); 563 tsfdesc += 2; 564 if (i != TLV_TYPE_TSFTIMESTAMP) { 565 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i); 566 goto done; 567 } 568 569 /* 570 * Validity check: the TLV holds TSF values with 8 bytes each, so 571 * the size in the TLV must match the nr_sets value 572 */ 573 i = get_unaligned_le16(tsfdesc); 574 tsfdesc += 2; 575 if (i / 8 != scanresp->nr_sets) { 576 lbs_deb_scan("scan response: invalid number of TSF timestamp " 577 "sets (expected %d got %d)\n", scanresp->nr_sets, 578 i / 8); 579 goto done; 580 } 581 582 for (i = 0; i < scanresp->nr_sets; i++) { 583 const u8 *bssid; 584 const u8 *ie; 585 int left; 586 int ielen; 587 int rssi; 588 u16 intvl; 589 u16 capa; 590 int chan_no = -1; 591 const u8 *ssid = NULL; 592 u8 ssid_len = 0; 593 594 int len = get_unaligned_le16(pos); 595 pos += 2; 596 597 /* BSSID */ 598 bssid = pos; 599 pos += ETH_ALEN; 600 /* RSSI */ 601 rssi = *pos++; 602 /* Packet time stamp */ 603 pos += 8; 604 /* Beacon interval */ 605 intvl = get_unaligned_le16(pos); 606 pos += 2; 607 /* Capabilities */ 608 capa = get_unaligned_le16(pos); 609 pos += 2; 610 611 /* To find out the channel, we must parse the IEs */ 612 ie = pos; 613 /* 614 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon 615 * interval, capabilities 616 */ 617 ielen = left = len - (6 + 1 + 8 + 2 + 2); 618 while (left >= 2) { 619 u8 id, elen; 620 id = *pos++; 621 elen = *pos++; 622 left -= 2; 623 if (elen > left) { 624 lbs_deb_scan("scan response: invalid IE fmt\n"); 625 goto done; 626 } 627 628 if (id == WLAN_EID_DS_PARAMS) 629 chan_no = *pos; 630 if (id == WLAN_EID_SSID) { 631 ssid = pos; 632 ssid_len = elen; 633 } 634 left -= elen; 635 pos += elen; 636 } 637 638 /* No channel, no luck */ 639 if (chan_no != -1) { 640 struct wiphy *wiphy = priv->wdev->wiphy; 641 int freq = ieee80211_channel_to_frequency(chan_no, 642 IEEE80211_BAND_2GHZ); 643 struct ieee80211_channel *channel = 644 ieee80211_get_channel(wiphy, freq); 645 646 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n", 647 bssid, capa, chan_no, ssid_len, ssid, 648 LBS_SCAN_RSSI_TO_MBM(rssi)/100); 649 650 if (channel && 651 !(channel->flags & IEEE80211_CHAN_DISABLED)) { 652 bss = cfg80211_inform_bss(wiphy, channel, 653 CFG80211_BSS_FTYPE_UNKNOWN, 654 bssid, get_unaligned_le64(tsfdesc), 655 capa, intvl, ie, ielen, 656 LBS_SCAN_RSSI_TO_MBM(rssi), 657 GFP_KERNEL); 658 cfg80211_put_bss(wiphy, bss); 659 } 660 } else 661 lbs_deb_scan("scan response: missing BSS channel IE\n"); 662 663 tsfdesc += 8; 664 } 665 ret = 0; 666 667 done: 668 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); 669 return ret; 670} 671 672 673/* 674 * Our scan command contains a TLV, consting of a SSID TLV, a channel list 675 * TLV and a rates TLV. Determine the maximum size of them: 676 */ 677#define LBS_SCAN_MAX_CMD_SIZE \ 678 (sizeof(struct cmd_ds_802_11_scan) \ 679 + LBS_MAX_SSID_TLV_SIZE \ 680 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \ 681 + LBS_MAX_RATES_TLV_SIZE) 682 683/* 684 * Assumes priv->scan_req is initialized and valid 685 * Assumes priv->scan_channel is initialized 686 */ 687static void lbs_scan_worker(struct work_struct *work) 688{ 689 struct lbs_private *priv = 690 container_of(work, struct lbs_private, scan_work.work); 691 struct cmd_ds_802_11_scan *scan_cmd; 692 u8 *tlv; /* pointer into our current, growing TLV storage area */ 693 int last_channel; 694 int running, carrier; 695 696 lbs_deb_enter(LBS_DEB_SCAN); 697 698 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL); 699 if (scan_cmd == NULL) 700 goto out_no_scan_cmd; 701 702 /* prepare fixed part of scan command */ 703 scan_cmd->bsstype = CMD_BSS_TYPE_ANY; 704 705 /* stop network while we're away from our main channel */ 706 running = !netif_queue_stopped(priv->dev); 707 carrier = netif_carrier_ok(priv->dev); 708 if (running) 709 netif_stop_queue(priv->dev); 710 if (carrier) 711 netif_carrier_off(priv->dev); 712 713 /* prepare fixed part of scan command */ 714 tlv = scan_cmd->tlvbuffer; 715 716 /* add SSID TLV */ 717 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0) 718 tlv += lbs_add_ssid_tlv(tlv, 719 priv->scan_req->ssids[0].ssid, 720 priv->scan_req->ssids[0].ssid_len); 721 722 /* add channel TLVs */ 723 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP; 724 if (last_channel > priv->scan_req->n_channels) 725 last_channel = priv->scan_req->n_channels; 726 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel, 727 priv->scan_req->n_ssids); 728 729 /* add rates TLV */ 730 tlv += lbs_add_supported_rates_tlv(tlv); 731 732 if (priv->scan_channel < priv->scan_req->n_channels) { 733 cancel_delayed_work(&priv->scan_work); 734 if (netif_running(priv->dev)) 735 queue_delayed_work(priv->work_thread, &priv->scan_work, 736 msecs_to_jiffies(300)); 737 } 738 739 /* This is the final data we are about to send */ 740 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd); 741 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd, 742 sizeof(*scan_cmd)); 743 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer, 744 tlv - scan_cmd->tlvbuffer); 745 746 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr, 747 le16_to_cpu(scan_cmd->hdr.size), 748 lbs_ret_scan, 0); 749 750 if (priv->scan_channel >= priv->scan_req->n_channels) { 751 /* Mark scan done */ 752 cancel_delayed_work(&priv->scan_work); 753 lbs_scan_done(priv); 754 } 755 756 /* Restart network */ 757 if (carrier) 758 netif_carrier_on(priv->dev); 759 if (running && !priv->tx_pending_len) 760 netif_wake_queue(priv->dev); 761 762 kfree(scan_cmd); 763 764 /* Wake up anything waiting on scan completion */ 765 if (priv->scan_req == NULL) { 766 lbs_deb_scan("scan: waking up waiters\n"); 767 wake_up_all(&priv->scan_q); 768 } 769 770 out_no_scan_cmd: 771 lbs_deb_leave(LBS_DEB_SCAN); 772} 773 774static void _internal_start_scan(struct lbs_private *priv, bool internal, 775 struct cfg80211_scan_request *request) 776{ 777 lbs_deb_enter(LBS_DEB_CFG80211); 778 779 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n", 780 request->n_ssids, request->n_channels, request->ie_len); 781 782 priv->scan_channel = 0; 783 priv->scan_req = request; 784 priv->internal_scan = internal; 785 786 queue_delayed_work(priv->work_thread, &priv->scan_work, 787 msecs_to_jiffies(50)); 788 789 lbs_deb_leave(LBS_DEB_CFG80211); 790} 791 792/* 793 * Clean up priv->scan_req. Should be used to handle the allocation details. 794 */ 795void lbs_scan_done(struct lbs_private *priv) 796{ 797 WARN_ON(!priv->scan_req); 798 799 if (priv->internal_scan) 800 kfree(priv->scan_req); 801 else 802 cfg80211_scan_done(priv->scan_req, false); 803 804 priv->scan_req = NULL; 805} 806 807static int lbs_cfg_scan(struct wiphy *wiphy, 808 struct cfg80211_scan_request *request) 809{ 810 struct lbs_private *priv = wiphy_priv(wiphy); 811 int ret = 0; 812 813 lbs_deb_enter(LBS_DEB_CFG80211); 814 815 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) { 816 /* old scan request not yet processed */ 817 ret = -EAGAIN; 818 goto out; 819 } 820 821 _internal_start_scan(priv, false, request); 822 823 if (priv->surpriseremoved) 824 ret = -EIO; 825 826 out: 827 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 828 return ret; 829} 830 831 832 833 834/* 835 * Events 836 */ 837 838void lbs_send_disconnect_notification(struct lbs_private *priv) 839{ 840 lbs_deb_enter(LBS_DEB_CFG80211); 841 842 cfg80211_disconnected(priv->dev, 843 0, 844 NULL, 0, 845 GFP_KERNEL); 846 847 lbs_deb_leave(LBS_DEB_CFG80211); 848} 849 850void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event) 851{ 852 lbs_deb_enter(LBS_DEB_CFG80211); 853 854 cfg80211_michael_mic_failure(priv->dev, 855 priv->assoc_bss, 856 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ? 857 NL80211_KEYTYPE_GROUP : 858 NL80211_KEYTYPE_PAIRWISE, 859 -1, 860 NULL, 861 GFP_KERNEL); 862 863 lbs_deb_leave(LBS_DEB_CFG80211); 864} 865 866 867 868 869/* 870 * Connect/disconnect 871 */ 872 873 874/* 875 * This removes all WEP keys 876 */ 877static int lbs_remove_wep_keys(struct lbs_private *priv) 878{ 879 struct cmd_ds_802_11_set_wep cmd; 880 int ret; 881 882 lbs_deb_enter(LBS_DEB_CFG80211); 883 884 memset(&cmd, 0, sizeof(cmd)); 885 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 886 cmd.keyindex = cpu_to_le16(priv->wep_tx_key); 887 cmd.action = cpu_to_le16(CMD_ACT_REMOVE); 888 889 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd); 890 891 lbs_deb_leave(LBS_DEB_CFG80211); 892 return ret; 893} 894 895/* 896 * Set WEP keys 897 */ 898static int lbs_set_wep_keys(struct lbs_private *priv) 899{ 900 struct cmd_ds_802_11_set_wep cmd; 901 int i; 902 int ret; 903 904 lbs_deb_enter(LBS_DEB_CFG80211); 905 906 /* 907 * command 13 00 908 * size 50 00 909 * sequence xx xx 910 * result 00 00 911 * action 02 00 ACT_ADD 912 * transmit key 00 00 913 * type for key 1 01 WEP40 914 * type for key 2 00 915 * type for key 3 00 916 * type for key 4 00 917 * key 1 39 39 39 39 39 00 00 00 918 * 00 00 00 00 00 00 00 00 919 * key 2 00 00 00 00 00 00 00 00 920 * 00 00 00 00 00 00 00 00 921 * key 3 00 00 00 00 00 00 00 00 922 * 00 00 00 00 00 00 00 00 923 * key 4 00 00 00 00 00 00 00 00 924 */ 925 if (priv->wep_key_len[0] || priv->wep_key_len[1] || 926 priv->wep_key_len[2] || priv->wep_key_len[3]) { 927 /* Only set wep keys if we have at least one of them */ 928 memset(&cmd, 0, sizeof(cmd)); 929 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 930 cmd.keyindex = cpu_to_le16(priv->wep_tx_key); 931 cmd.action = cpu_to_le16(CMD_ACT_ADD); 932 933 for (i = 0; i < 4; i++) { 934 switch (priv->wep_key_len[i]) { 935 case WLAN_KEY_LEN_WEP40: 936 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT; 937 break; 938 case WLAN_KEY_LEN_WEP104: 939 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT; 940 break; 941 default: 942 cmd.keytype[i] = 0; 943 break; 944 } 945 memcpy(cmd.keymaterial[i], priv->wep_key[i], 946 priv->wep_key_len[i]); 947 } 948 949 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd); 950 } else { 951 /* Otherwise remove all wep keys */ 952 ret = lbs_remove_wep_keys(priv); 953 } 954 955 lbs_deb_leave(LBS_DEB_CFG80211); 956 return ret; 957} 958 959 960/* 961 * Enable/Disable RSN status 962 */ 963static int lbs_enable_rsn(struct lbs_private *priv, int enable) 964{ 965 struct cmd_ds_802_11_enable_rsn cmd; 966 int ret; 967 968 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable); 969 970 /* 971 * cmd 2f 00 972 * size 0c 00 973 * sequence xx xx 974 * result 00 00 975 * action 01 00 ACT_SET 976 * enable 01 00 977 */ 978 memset(&cmd, 0, sizeof(cmd)); 979 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 980 cmd.action = cpu_to_le16(CMD_ACT_SET); 981 cmd.enable = cpu_to_le16(enable); 982 983 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd); 984 985 lbs_deb_leave(LBS_DEB_CFG80211); 986 return ret; 987} 988 989 990/* 991 * Set WPA/WPA key material 992 */ 993 994/* 995 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we 996 * get rid of WEXT, this should go into host.h 997 */ 998 999struct cmd_key_material { 1000 struct cmd_header hdr; 1001 1002 __le16 action; 1003 struct MrvlIEtype_keyParamSet param; 1004} __packed; 1005 1006static int lbs_set_key_material(struct lbs_private *priv, 1007 int key_type, int key_info, 1008 const u8 *key, u16 key_len) 1009{ 1010 struct cmd_key_material cmd; 1011 int ret; 1012 1013 lbs_deb_enter(LBS_DEB_CFG80211); 1014 1015 /* 1016 * Example for WPA (TKIP): 1017 * 1018 * cmd 5e 00 1019 * size 34 00 1020 * sequence xx xx 1021 * result 00 00 1022 * action 01 00 1023 * TLV type 00 01 key param 1024 * length 00 26 1025 * key type 01 00 TKIP 1026 * key info 06 00 UNICAST | ENABLED 1027 * key len 20 00 1028 * key 32 bytes 1029 */ 1030 memset(&cmd, 0, sizeof(cmd)); 1031 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1032 cmd.action = cpu_to_le16(CMD_ACT_SET); 1033 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL); 1034 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4); 1035 cmd.param.keytypeid = cpu_to_le16(key_type); 1036 cmd.param.keyinfo = cpu_to_le16(key_info); 1037 cmd.param.keylen = cpu_to_le16(key_len); 1038 if (key && key_len) 1039 memcpy(cmd.param.key, key, key_len); 1040 1041 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd); 1042 1043 lbs_deb_leave(LBS_DEB_CFG80211); 1044 return ret; 1045} 1046 1047 1048/* 1049 * Sets the auth type (open, shared, etc) in the firmware. That 1050 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware 1051 * command doesn't send an authentication frame at all, it just 1052 * stores the auth_type. 1053 */ 1054static int lbs_set_authtype(struct lbs_private *priv, 1055 struct cfg80211_connect_params *sme) 1056{ 1057 struct cmd_ds_802_11_authenticate cmd; 1058 int ret; 1059 1060 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type); 1061 1062 /* 1063 * cmd 11 00 1064 * size 19 00 1065 * sequence xx xx 1066 * result 00 00 1067 * BSS id 00 13 19 80 da 30 1068 * auth type 00 1069 * reserved 00 00 00 00 00 00 00 00 00 00 1070 */ 1071 memset(&cmd, 0, sizeof(cmd)); 1072 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1073 if (sme->bssid) 1074 memcpy(cmd.bssid, sme->bssid, ETH_ALEN); 1075 /* convert auth_type */ 1076 ret = lbs_auth_to_authtype(sme->auth_type); 1077 if (ret < 0) 1078 goto done; 1079 1080 cmd.authtype = ret; 1081 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd); 1082 1083 done: 1084 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1085 return ret; 1086} 1087 1088 1089/* 1090 * Create association request 1091 */ 1092#define LBS_ASSOC_MAX_CMD_SIZE \ 1093 (sizeof(struct cmd_ds_802_11_associate) \ 1094 - 512 /* cmd_ds_802_11_associate.iebuf */ \ 1095 + LBS_MAX_SSID_TLV_SIZE \ 1096 + LBS_MAX_CHANNEL_TLV_SIZE \ 1097 + LBS_MAX_CF_PARAM_TLV_SIZE \ 1098 + LBS_MAX_AUTH_TYPE_TLV_SIZE \ 1099 + LBS_MAX_WPA_TLV_SIZE) 1100 1101static int lbs_associate(struct lbs_private *priv, 1102 struct cfg80211_bss *bss, 1103 struct cfg80211_connect_params *sme) 1104{ 1105 struct cmd_ds_802_11_associate_response *resp; 1106 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE, 1107 GFP_KERNEL); 1108 const u8 *ssid_eid; 1109 size_t len, resp_ie_len; 1110 int status; 1111 int ret; 1112 u8 *pos = &(cmd->iebuf[0]); 1113 u8 *tmp; 1114 1115 lbs_deb_enter(LBS_DEB_CFG80211); 1116 1117 if (!cmd) { 1118 ret = -ENOMEM; 1119 goto done; 1120 } 1121 1122 /* 1123 * cmd 50 00 1124 * length 34 00 1125 * sequence xx xx 1126 * result 00 00 1127 * BSS id 00 13 19 80 da 30 1128 * capabilities 11 00 1129 * listen interval 0a 00 1130 * beacon interval 00 00 1131 * DTIM period 00 1132 * TLVs xx (up to 512 bytes) 1133 */ 1134 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE); 1135 1136 /* Fill in static fields */ 1137 memcpy(cmd->bssid, bss->bssid, ETH_ALEN); 1138 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL); 1139 cmd->capability = cpu_to_le16(bss->capability); 1140 1141 /* add SSID TLV */ 1142 rcu_read_lock(); 1143 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); 1144 if (ssid_eid) 1145 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]); 1146 else 1147 lbs_deb_assoc("no SSID\n"); 1148 rcu_read_unlock(); 1149 1150 /* add DS param TLV */ 1151 if (bss->channel) 1152 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value); 1153 else 1154 lbs_deb_assoc("no channel\n"); 1155 1156 /* add (empty) CF param TLV */ 1157 pos += lbs_add_cf_param_tlv(pos); 1158 1159 /* add rates TLV */ 1160 tmp = pos + 4; /* skip Marvell IE header */ 1161 pos += lbs_add_common_rates_tlv(pos, bss); 1162 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp); 1163 1164 /* add auth type TLV */ 1165 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9) 1166 pos += lbs_add_auth_type_tlv(pos, sme->auth_type); 1167 1168 /* add WPA/WPA2 TLV */ 1169 if (sme->ie && sme->ie_len) 1170 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len); 1171 1172 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) + 1173 (u16)(pos - (u8 *) &cmd->iebuf); 1174 cmd->hdr.size = cpu_to_le16(len); 1175 1176 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd, 1177 le16_to_cpu(cmd->hdr.size)); 1178 1179 /* store for later use */ 1180 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN); 1181 1182 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd); 1183 if (ret) 1184 goto done; 1185 1186 /* generate connect message to cfg80211 */ 1187 1188 resp = (void *) cmd; /* recast for easier field access */ 1189 status = le16_to_cpu(resp->statuscode); 1190 1191 /* Older FW versions map the IEEE 802.11 Status Code in the association 1192 * response to the following values returned in resp->statuscode: 1193 * 1194 * IEEE Status Code Marvell Status Code 1195 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS 1196 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1197 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1198 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1199 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1200 * others -> 0x0003 ASSOC_RESULT_REFUSED 1201 * 1202 * Other response codes: 1203 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused) 1204 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for 1205 * association response from the AP) 1206 */ 1207 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) { 1208 switch (status) { 1209 case 0: 1210 break; 1211 case 1: 1212 lbs_deb_assoc("invalid association parameters\n"); 1213 status = WLAN_STATUS_CAPS_UNSUPPORTED; 1214 break; 1215 case 2: 1216 lbs_deb_assoc("timer expired while waiting for AP\n"); 1217 status = WLAN_STATUS_AUTH_TIMEOUT; 1218 break; 1219 case 3: 1220 lbs_deb_assoc("association refused by AP\n"); 1221 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC; 1222 break; 1223 case 4: 1224 lbs_deb_assoc("authentication refused by AP\n"); 1225 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; 1226 break; 1227 default: 1228 lbs_deb_assoc("association failure %d\n", status); 1229 /* v5 OLPC firmware does return the AP status code if 1230 * it's not one of the values above. Let that through. 1231 */ 1232 break; 1233 } 1234 } 1235 1236 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, " 1237 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode), 1238 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid)); 1239 1240 resp_ie_len = le16_to_cpu(resp->hdr.size) 1241 - sizeof(resp->hdr) 1242 - 6; 1243 cfg80211_connect_result(priv->dev, 1244 priv->assoc_bss, 1245 sme->ie, sme->ie_len, 1246 resp->iebuf, resp_ie_len, 1247 status, 1248 GFP_KERNEL); 1249 1250 if (status == 0) { 1251 /* TODO: get rid of priv->connect_status */ 1252 priv->connect_status = LBS_CONNECTED; 1253 netif_carrier_on(priv->dev); 1254 if (!priv->tx_pending_len) 1255 netif_tx_wake_all_queues(priv->dev); 1256 } 1257 1258 kfree(cmd); 1259done: 1260 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1261 return ret; 1262} 1263 1264static struct cfg80211_scan_request * 1265_new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme) 1266{ 1267 struct cfg80211_scan_request *creq = NULL; 1268 int i, n_channels = ieee80211_get_num_supported_channels(wiphy); 1269 enum ieee80211_band band; 1270 1271 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) + 1272 n_channels * sizeof(void *), 1273 GFP_ATOMIC); 1274 if (!creq) 1275 return NULL; 1276 1277 /* SSIDs come after channels */ 1278 creq->ssids = (void *)&creq->channels[n_channels]; 1279 creq->n_channels = n_channels; 1280 creq->n_ssids = 1; 1281 1282 /* Scan all available channels */ 1283 i = 0; 1284 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 1285 int j; 1286 1287 if (!wiphy->bands[band]) 1288 continue; 1289 1290 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 1291 /* ignore disabled channels */ 1292 if (wiphy->bands[band]->channels[j].flags & 1293 IEEE80211_CHAN_DISABLED) 1294 continue; 1295 1296 creq->channels[i] = &wiphy->bands[band]->channels[j]; 1297 i++; 1298 } 1299 } 1300 if (i) { 1301 /* Set real number of channels specified in creq->channels[] */ 1302 creq->n_channels = i; 1303 1304 /* Scan for the SSID we're going to connect to */ 1305 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len); 1306 creq->ssids[0].ssid_len = sme->ssid_len; 1307 } else { 1308 /* No channels found... */ 1309 kfree(creq); 1310 creq = NULL; 1311 } 1312 1313 return creq; 1314} 1315 1316static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev, 1317 struct cfg80211_connect_params *sme) 1318{ 1319 struct lbs_private *priv = wiphy_priv(wiphy); 1320 struct cfg80211_bss *bss = NULL; 1321 int ret = 0; 1322 u8 preamble = RADIO_PREAMBLE_SHORT; 1323 1324 if (dev == priv->mesh_dev) 1325 return -EOPNOTSUPP; 1326 1327 lbs_deb_enter(LBS_DEB_CFG80211); 1328 1329 if (!sme->bssid) { 1330 struct cfg80211_scan_request *creq; 1331 1332 /* 1333 * Scan for the requested network after waiting for existing 1334 * scans to finish. 1335 */ 1336 lbs_deb_assoc("assoc: waiting for existing scans\n"); 1337 wait_event_interruptible_timeout(priv->scan_q, 1338 (priv->scan_req == NULL), 1339 (15 * HZ)); 1340 1341 creq = _new_connect_scan_req(wiphy, sme); 1342 if (!creq) { 1343 ret = -EINVAL; 1344 goto done; 1345 } 1346 1347 lbs_deb_assoc("assoc: scanning for compatible AP\n"); 1348 _internal_start_scan(priv, true, creq); 1349 1350 lbs_deb_assoc("assoc: waiting for scan to complete\n"); 1351 wait_event_interruptible_timeout(priv->scan_q, 1352 (priv->scan_req == NULL), 1353 (15 * HZ)); 1354 lbs_deb_assoc("assoc: scanning completed\n"); 1355 } 1356 1357 /* Find the BSS we want using available scan results */ 1358 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid, 1359 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS, 1360 IEEE80211_PRIVACY_ANY); 1361 if (!bss) { 1362 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n", 1363 sme->bssid); 1364 ret = -ENOENT; 1365 goto done; 1366 } 1367 lbs_deb_assoc("trying %pM\n", bss->bssid); 1368 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n", 1369 sme->crypto.cipher_group, 1370 sme->key_idx, sme->key_len); 1371 1372 /* As this is a new connection, clear locally stored WEP keys */ 1373 priv->wep_tx_key = 0; 1374 memset(priv->wep_key, 0, sizeof(priv->wep_key)); 1375 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len)); 1376 1377 /* set/remove WEP keys */ 1378 switch (sme->crypto.cipher_group) { 1379 case WLAN_CIPHER_SUITE_WEP40: 1380 case WLAN_CIPHER_SUITE_WEP104: 1381 /* Store provided WEP keys in priv-> */ 1382 priv->wep_tx_key = sme->key_idx; 1383 priv->wep_key_len[sme->key_idx] = sme->key_len; 1384 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len); 1385 /* Set WEP keys and WEP mode */ 1386 lbs_set_wep_keys(priv); 1387 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE; 1388 lbs_set_mac_control(priv); 1389 /* No RSN mode for WEP */ 1390 lbs_enable_rsn(priv, 0); 1391 break; 1392 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */ 1393 /* 1394 * If we don't have no WEP, no WPA and no WPA2, 1395 * we remove all keys like in the WPA/WPA2 setup, 1396 * we just don't set RSN. 1397 * 1398 * Therefore: fall-through 1399 */ 1400 case WLAN_CIPHER_SUITE_TKIP: 1401 case WLAN_CIPHER_SUITE_CCMP: 1402 /* Remove WEP keys and WEP mode */ 1403 lbs_remove_wep_keys(priv); 1404 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE; 1405 lbs_set_mac_control(priv); 1406 1407 /* clear the WPA/WPA2 keys */ 1408 lbs_set_key_material(priv, 1409 KEY_TYPE_ID_WEP, /* doesn't matter */ 1410 KEY_INFO_WPA_UNICAST, 1411 NULL, 0); 1412 lbs_set_key_material(priv, 1413 KEY_TYPE_ID_WEP, /* doesn't matter */ 1414 KEY_INFO_WPA_MCAST, 1415 NULL, 0); 1416 /* RSN mode for WPA/WPA2 */ 1417 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0); 1418 break; 1419 default: 1420 wiphy_err(wiphy, "unsupported cipher group 0x%x\n", 1421 sme->crypto.cipher_group); 1422 ret = -ENOTSUPP; 1423 goto done; 1424 } 1425 1426 ret = lbs_set_authtype(priv, sme); 1427 if (ret == -ENOTSUPP) { 1428 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type); 1429 goto done; 1430 } 1431 1432 lbs_set_radio(priv, preamble, 1); 1433 1434 /* Do the actual association */ 1435 ret = lbs_associate(priv, bss, sme); 1436 1437 done: 1438 if (bss) 1439 cfg80211_put_bss(wiphy, bss); 1440 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1441 return ret; 1442} 1443 1444int lbs_disconnect(struct lbs_private *priv, u16 reason) 1445{ 1446 struct cmd_ds_802_11_deauthenticate cmd; 1447 int ret; 1448 1449 memset(&cmd, 0, sizeof(cmd)); 1450 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1451 /* Mildly ugly to use a locally store my own BSSID ... */ 1452 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN); 1453 cmd.reasoncode = cpu_to_le16(reason); 1454 1455 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd); 1456 if (ret) 1457 return ret; 1458 1459 cfg80211_disconnected(priv->dev, 1460 reason, 1461 NULL, 0, 1462 GFP_KERNEL); 1463 priv->connect_status = LBS_DISCONNECTED; 1464 1465 return 0; 1466} 1467 1468static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev, 1469 u16 reason_code) 1470{ 1471 struct lbs_private *priv = wiphy_priv(wiphy); 1472 1473 if (dev == priv->mesh_dev) 1474 return -EOPNOTSUPP; 1475 1476 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code); 1477 1478 /* store for lbs_cfg_ret_disconnect() */ 1479 priv->disassoc_reason = reason_code; 1480 1481 return lbs_disconnect(priv, reason_code); 1482} 1483 1484static int lbs_cfg_set_default_key(struct wiphy *wiphy, 1485 struct net_device *netdev, 1486 u8 key_index, bool unicast, 1487 bool multicast) 1488{ 1489 struct lbs_private *priv = wiphy_priv(wiphy); 1490 1491 if (netdev == priv->mesh_dev) 1492 return -EOPNOTSUPP; 1493 1494 lbs_deb_enter(LBS_DEB_CFG80211); 1495 1496 if (key_index != priv->wep_tx_key) { 1497 lbs_deb_assoc("set_default_key: to %d\n", key_index); 1498 priv->wep_tx_key = key_index; 1499 lbs_set_wep_keys(priv); 1500 } 1501 1502 return 0; 1503} 1504 1505 1506static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev, 1507 u8 idx, bool pairwise, const u8 *mac_addr, 1508 struct key_params *params) 1509{ 1510 struct lbs_private *priv = wiphy_priv(wiphy); 1511 u16 key_info; 1512 u16 key_type; 1513 int ret = 0; 1514 1515 if (netdev == priv->mesh_dev) 1516 return -EOPNOTSUPP; 1517 1518 lbs_deb_enter(LBS_DEB_CFG80211); 1519 1520 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n", 1521 params->cipher, mac_addr); 1522 lbs_deb_assoc("add_key: key index %d, key len %d\n", 1523 idx, params->key_len); 1524 if (params->key_len) 1525 lbs_deb_hex(LBS_DEB_CFG80211, "KEY", 1526 params->key, params->key_len); 1527 1528 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len); 1529 if (params->seq_len) 1530 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ", 1531 params->seq, params->seq_len); 1532 1533 switch (params->cipher) { 1534 case WLAN_CIPHER_SUITE_WEP40: 1535 case WLAN_CIPHER_SUITE_WEP104: 1536 /* actually compare if something has changed ... */ 1537 if ((priv->wep_key_len[idx] != params->key_len) || 1538 memcmp(priv->wep_key[idx], 1539 params->key, params->key_len) != 0) { 1540 priv->wep_key_len[idx] = params->key_len; 1541 memcpy(priv->wep_key[idx], 1542 params->key, params->key_len); 1543 lbs_set_wep_keys(priv); 1544 } 1545 break; 1546 case WLAN_CIPHER_SUITE_TKIP: 1547 case WLAN_CIPHER_SUITE_CCMP: 1548 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0) 1549 ? KEY_INFO_WPA_UNICAST 1550 : KEY_INFO_WPA_MCAST); 1551 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP) 1552 ? KEY_TYPE_ID_TKIP 1553 : KEY_TYPE_ID_AES; 1554 lbs_set_key_material(priv, 1555 key_type, 1556 key_info, 1557 params->key, params->key_len); 1558 break; 1559 default: 1560 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher); 1561 ret = -ENOTSUPP; 1562 break; 1563 } 1564 1565 return ret; 1566} 1567 1568 1569static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev, 1570 u8 key_index, bool pairwise, const u8 *mac_addr) 1571{ 1572 1573 lbs_deb_enter(LBS_DEB_CFG80211); 1574 1575 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n", 1576 key_index, mac_addr); 1577 1578#ifdef TODO 1579 struct lbs_private *priv = wiphy_priv(wiphy); 1580 /* 1581 * I think can keep this a NO-OP, because: 1582 1583 * - we clear all keys whenever we do lbs_cfg_connect() anyway 1584 * - neither "iw" nor "wpa_supplicant" won't call this during 1585 * an ongoing connection 1586 * - TODO: but I have to check if this is still true when 1587 * I set the AP to periodic re-keying 1588 * - we've not kzallec() something when we've added a key at 1589 * lbs_cfg_connect() or lbs_cfg_add_key(). 1590 * 1591 * This causes lbs_cfg_del_key() only called at disconnect time, 1592 * where we'd just waste time deleting a key that is not going 1593 * to be used anyway. 1594 */ 1595 if (key_index < 3 && priv->wep_key_len[key_index]) { 1596 priv->wep_key_len[key_index] = 0; 1597 lbs_set_wep_keys(priv); 1598 } 1599#endif 1600 1601 return 0; 1602} 1603 1604 1605/* 1606 * Get station 1607 */ 1608 1609static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev, 1610 const u8 *mac, struct station_info *sinfo) 1611{ 1612 struct lbs_private *priv = wiphy_priv(wiphy); 1613 s8 signal, noise; 1614 int ret; 1615 size_t i; 1616 1617 lbs_deb_enter(LBS_DEB_CFG80211); 1618 1619 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) | 1620 BIT(NL80211_STA_INFO_TX_PACKETS) | 1621 BIT(NL80211_STA_INFO_RX_BYTES) | 1622 BIT(NL80211_STA_INFO_RX_PACKETS); 1623 sinfo->tx_bytes = priv->dev->stats.tx_bytes; 1624 sinfo->tx_packets = priv->dev->stats.tx_packets; 1625 sinfo->rx_bytes = priv->dev->stats.rx_bytes; 1626 sinfo->rx_packets = priv->dev->stats.rx_packets; 1627 1628 /* Get current RSSI */ 1629 ret = lbs_get_rssi(priv, &signal, &noise); 1630 if (ret == 0) { 1631 sinfo->signal = signal; 1632 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); 1633 } 1634 1635 /* Convert priv->cur_rate from hw_value to NL80211 value */ 1636 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) { 1637 if (priv->cur_rate == lbs_rates[i].hw_value) { 1638 sinfo->txrate.legacy = lbs_rates[i].bitrate; 1639 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); 1640 break; 1641 } 1642 } 1643 1644 return 0; 1645} 1646 1647 1648 1649 1650/* 1651 * Change interface 1652 */ 1653 1654static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev, 1655 enum nl80211_iftype type, u32 *flags, 1656 struct vif_params *params) 1657{ 1658 struct lbs_private *priv = wiphy_priv(wiphy); 1659 int ret = 0; 1660 1661 if (dev == priv->mesh_dev) 1662 return -EOPNOTSUPP; 1663 1664 switch (type) { 1665 case NL80211_IFTYPE_MONITOR: 1666 case NL80211_IFTYPE_STATION: 1667 case NL80211_IFTYPE_ADHOC: 1668 break; 1669 default: 1670 return -EOPNOTSUPP; 1671 } 1672 1673 lbs_deb_enter(LBS_DEB_CFG80211); 1674 1675 if (priv->iface_running) 1676 ret = lbs_set_iface_type(priv, type); 1677 1678 if (!ret) 1679 priv->wdev->iftype = type; 1680 1681 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1682 return ret; 1683} 1684 1685 1686 1687/* 1688 * IBSS (Ad-Hoc) 1689 */ 1690 1691/* 1692 * The firmware needs the following bits masked out of the beacon-derived 1693 * capability field when associating/joining to a BSS: 1694 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused) 1695 */ 1696#define CAPINFO_MASK (~(0xda00)) 1697 1698 1699static void lbs_join_post(struct lbs_private *priv, 1700 struct cfg80211_ibss_params *params, 1701 u8 *bssid, u16 capability) 1702{ 1703 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */ 1704 2 + 4 + /* basic rates */ 1705 2 + 1 + /* DS parameter */ 1706 2 + 2 + /* atim */ 1707 2 + 8]; /* extended rates */ 1708 u8 *fake = fake_ie; 1709 struct cfg80211_bss *bss; 1710 1711 lbs_deb_enter(LBS_DEB_CFG80211); 1712 1713 /* 1714 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get 1715 * the real IE from the firmware. So we fabricate a fake IE based on 1716 * what the firmware actually sends (sniffed with wireshark). 1717 */ 1718 /* Fake SSID IE */ 1719 *fake++ = WLAN_EID_SSID; 1720 *fake++ = params->ssid_len; 1721 memcpy(fake, params->ssid, params->ssid_len); 1722 fake += params->ssid_len; 1723 /* Fake supported basic rates IE */ 1724 *fake++ = WLAN_EID_SUPP_RATES; 1725 *fake++ = 4; 1726 *fake++ = 0x82; 1727 *fake++ = 0x84; 1728 *fake++ = 0x8b; 1729 *fake++ = 0x96; 1730 /* Fake DS channel IE */ 1731 *fake++ = WLAN_EID_DS_PARAMS; 1732 *fake++ = 1; 1733 *fake++ = params->chandef.chan->hw_value; 1734 /* Fake IBSS params IE */ 1735 *fake++ = WLAN_EID_IBSS_PARAMS; 1736 *fake++ = 2; 1737 *fake++ = 0; /* ATIM=0 */ 1738 *fake++ = 0; 1739 /* Fake extended rates IE, TODO: don't add this for 802.11b only, 1740 * but I don't know how this could be checked */ 1741 *fake++ = WLAN_EID_EXT_SUPP_RATES; 1742 *fake++ = 8; 1743 *fake++ = 0x0c; 1744 *fake++ = 0x12; 1745 *fake++ = 0x18; 1746 *fake++ = 0x24; 1747 *fake++ = 0x30; 1748 *fake++ = 0x48; 1749 *fake++ = 0x60; 1750 *fake++ = 0x6c; 1751 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie); 1752 1753 bss = cfg80211_inform_bss(priv->wdev->wiphy, 1754 params->chandef.chan, 1755 CFG80211_BSS_FTYPE_UNKNOWN, 1756 bssid, 1757 0, 1758 capability, 1759 params->beacon_interval, 1760 fake_ie, fake - fake_ie, 1761 0, GFP_KERNEL); 1762 cfg80211_put_bss(priv->wdev->wiphy, bss); 1763 1764 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len); 1765 priv->wdev->ssid_len = params->ssid_len; 1766 1767 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan, 1768 GFP_KERNEL); 1769 1770 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */ 1771 priv->connect_status = LBS_CONNECTED; 1772 netif_carrier_on(priv->dev); 1773 if (!priv->tx_pending_len) 1774 netif_wake_queue(priv->dev); 1775 1776 lbs_deb_leave(LBS_DEB_CFG80211); 1777} 1778 1779static int lbs_ibss_join_existing(struct lbs_private *priv, 1780 struct cfg80211_ibss_params *params, 1781 struct cfg80211_bss *bss) 1782{ 1783 const u8 *rates_eid; 1784 struct cmd_ds_802_11_ad_hoc_join cmd; 1785 u8 preamble = RADIO_PREAMBLE_SHORT; 1786 int ret = 0; 1787 1788 lbs_deb_enter(LBS_DEB_CFG80211); 1789 1790 /* TODO: set preamble based on scan result */ 1791 ret = lbs_set_radio(priv, preamble, 1); 1792 if (ret) 1793 goto out; 1794 1795 /* 1796 * Example CMD_802_11_AD_HOC_JOIN command: 1797 * 1798 * command 2c 00 CMD_802_11_AD_HOC_JOIN 1799 * size 65 00 1800 * sequence xx xx 1801 * result 00 00 1802 * bssid 02 27 27 97 2f 96 1803 * ssid 49 42 53 53 00 00 00 00 1804 * 00 00 00 00 00 00 00 00 1805 * 00 00 00 00 00 00 00 00 1806 * 00 00 00 00 00 00 00 00 1807 * type 02 CMD_BSS_TYPE_IBSS 1808 * beacon period 64 00 1809 * dtim period 00 1810 * timestamp 00 00 00 00 00 00 00 00 1811 * localtime 00 00 00 00 00 00 00 00 1812 * IE DS 03 1813 * IE DS len 01 1814 * IE DS channel 01 1815 * reserveed 00 00 00 00 1816 * IE IBSS 06 1817 * IE IBSS len 02 1818 * IE IBSS atim 00 00 1819 * reserved 00 00 00 00 1820 * capability 02 00 1821 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00 1822 * fail timeout ff 00 1823 * probe delay 00 00 1824 */ 1825 memset(&cmd, 0, sizeof(cmd)); 1826 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1827 1828 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN); 1829 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len); 1830 cmd.bss.type = CMD_BSS_TYPE_IBSS; 1831 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval); 1832 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS; 1833 cmd.bss.ds.header.len = 1; 1834 cmd.bss.ds.channel = params->chandef.chan->hw_value; 1835 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS; 1836 cmd.bss.ibss.header.len = 2; 1837 cmd.bss.ibss.atimwindow = 0; 1838 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK); 1839 1840 /* set rates to the intersection of our rates and the rates in the 1841 bss */ 1842 rcu_read_lock(); 1843 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES); 1844 if (!rates_eid) { 1845 lbs_add_rates(cmd.bss.rates); 1846 } else { 1847 int hw, i; 1848 u8 rates_max = rates_eid[1]; 1849 u8 *rates = cmd.bss.rates; 1850 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) { 1851 u8 hw_rate = lbs_rates[hw].bitrate / 5; 1852 for (i = 0; i < rates_max; i++) { 1853 if (hw_rate == (rates_eid[i+2] & 0x7f)) { 1854 u8 rate = rates_eid[i+2]; 1855 if (rate == 0x02 || rate == 0x04 || 1856 rate == 0x0b || rate == 0x16) 1857 rate |= 0x80; 1858 *rates++ = rate; 1859 } 1860 } 1861 } 1862 } 1863 rcu_read_unlock(); 1864 1865 /* Only v8 and below support setting this */ 1866 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) { 1867 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT); 1868 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME); 1869 } 1870 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd); 1871 if (ret) 1872 goto out; 1873 1874 /* 1875 * This is a sample response to CMD_802_11_AD_HOC_JOIN: 1876 * 1877 * response 2c 80 1878 * size 09 00 1879 * sequence xx xx 1880 * result 00 00 1881 * reserved 00 1882 */ 1883 lbs_join_post(priv, params, bss->bssid, bss->capability); 1884 1885 out: 1886 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1887 return ret; 1888} 1889 1890 1891 1892static int lbs_ibss_start_new(struct lbs_private *priv, 1893 struct cfg80211_ibss_params *params) 1894{ 1895 struct cmd_ds_802_11_ad_hoc_start cmd; 1896 struct cmd_ds_802_11_ad_hoc_result *resp = 1897 (struct cmd_ds_802_11_ad_hoc_result *) &cmd; 1898 u8 preamble = RADIO_PREAMBLE_SHORT; 1899 int ret = 0; 1900 u16 capability; 1901 1902 lbs_deb_enter(LBS_DEB_CFG80211); 1903 1904 ret = lbs_set_radio(priv, preamble, 1); 1905 if (ret) 1906 goto out; 1907 1908 /* 1909 * Example CMD_802_11_AD_HOC_START command: 1910 * 1911 * command 2b 00 CMD_802_11_AD_HOC_START 1912 * size b1 00 1913 * sequence xx xx 1914 * result 00 00 1915 * ssid 54 45 53 54 00 00 00 00 1916 * 00 00 00 00 00 00 00 00 1917 * 00 00 00 00 00 00 00 00 1918 * 00 00 00 00 00 00 00 00 1919 * bss type 02 1920 * beacon period 64 00 1921 * dtim period 00 1922 * IE IBSS 06 1923 * IE IBSS len 02 1924 * IE IBSS atim 00 00 1925 * reserved 00 00 00 00 1926 * IE DS 03 1927 * IE DS len 01 1928 * IE DS channel 01 1929 * reserved 00 00 00 00 1930 * probe delay 00 00 1931 * capability 02 00 1932 * rates 82 84 8b 96 (basic rates with have bit 7 set) 1933 * 0c 12 18 24 30 48 60 6c 1934 * padding 100 bytes 1935 */ 1936 memset(&cmd, 0, sizeof(cmd)); 1937 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1938 memcpy(cmd.ssid, params->ssid, params->ssid_len); 1939 cmd.bsstype = CMD_BSS_TYPE_IBSS; 1940 cmd.beaconperiod = cpu_to_le16(params->beacon_interval); 1941 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS; 1942 cmd.ibss.header.len = 2; 1943 cmd.ibss.atimwindow = 0; 1944 cmd.ds.header.id = WLAN_EID_DS_PARAMS; 1945 cmd.ds.header.len = 1; 1946 cmd.ds.channel = params->chandef.chan->hw_value; 1947 /* Only v8 and below support setting probe delay */ 1948 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) 1949 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME); 1950 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */ 1951 capability = WLAN_CAPABILITY_IBSS; 1952 cmd.capability = cpu_to_le16(capability); 1953 lbs_add_rates(cmd.rates); 1954 1955 1956 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd); 1957 if (ret) 1958 goto out; 1959 1960 /* 1961 * This is a sample response to CMD_802_11_AD_HOC_JOIN: 1962 * 1963 * response 2b 80 1964 * size 14 00 1965 * sequence xx xx 1966 * result 00 00 1967 * reserved 00 1968 * bssid 02 2b 7b 0f 86 0e 1969 */ 1970 lbs_join_post(priv, params, resp->bssid, capability); 1971 1972 out: 1973 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1974 return ret; 1975} 1976 1977 1978static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1979 struct cfg80211_ibss_params *params) 1980{ 1981 struct lbs_private *priv = wiphy_priv(wiphy); 1982 int ret = 0; 1983 struct cfg80211_bss *bss; 1984 1985 if (dev == priv->mesh_dev) 1986 return -EOPNOTSUPP; 1987 1988 lbs_deb_enter(LBS_DEB_CFG80211); 1989 1990 if (!params->chandef.chan) { 1991 ret = -ENOTSUPP; 1992 goto out; 1993 } 1994 1995 ret = lbs_set_channel(priv, params->chandef.chan->hw_value); 1996 if (ret) 1997 goto out; 1998 1999 /* Search if someone is beaconing. This assumes that the 2000 * bss list is populated already */ 2001 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid, 2002 params->ssid, params->ssid_len, 2003 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY); 2004 2005 if (bss) { 2006 ret = lbs_ibss_join_existing(priv, params, bss); 2007 cfg80211_put_bss(wiphy, bss); 2008 } else 2009 ret = lbs_ibss_start_new(priv, params); 2010 2011 2012 out: 2013 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2014 return ret; 2015} 2016 2017 2018static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2019{ 2020 struct lbs_private *priv = wiphy_priv(wiphy); 2021 struct cmd_ds_802_11_ad_hoc_stop cmd; 2022 int ret = 0; 2023 2024 if (dev == priv->mesh_dev) 2025 return -EOPNOTSUPP; 2026 2027 lbs_deb_enter(LBS_DEB_CFG80211); 2028 2029 memset(&cmd, 0, sizeof(cmd)); 2030 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 2031 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd); 2032 2033 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */ 2034 lbs_mac_event_disconnected(priv); 2035 2036 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2037 return ret; 2038} 2039 2040 2041 2042 2043/* 2044 * Initialization 2045 */ 2046 2047static struct cfg80211_ops lbs_cfg80211_ops = { 2048 .set_monitor_channel = lbs_cfg_set_monitor_channel, 2049 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel, 2050 .scan = lbs_cfg_scan, 2051 .connect = lbs_cfg_connect, 2052 .disconnect = lbs_cfg_disconnect, 2053 .add_key = lbs_cfg_add_key, 2054 .del_key = lbs_cfg_del_key, 2055 .set_default_key = lbs_cfg_set_default_key, 2056 .get_station = lbs_cfg_get_station, 2057 .change_virtual_intf = lbs_change_intf, 2058 .join_ibss = lbs_join_ibss, 2059 .leave_ibss = lbs_leave_ibss, 2060}; 2061 2062 2063/* 2064 * At this time lbs_private *priv doesn't even exist, so we just allocate 2065 * memory and don't initialize the wiphy further. This is postponed until we 2066 * can talk to the firmware and happens at registration time in 2067 * lbs_cfg_wiphy_register(). 2068 */ 2069struct wireless_dev *lbs_cfg_alloc(struct device *dev) 2070{ 2071 int ret = 0; 2072 struct wireless_dev *wdev; 2073 2074 lbs_deb_enter(LBS_DEB_CFG80211); 2075 2076 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); 2077 if (!wdev) 2078 return ERR_PTR(-ENOMEM); 2079 2080 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private)); 2081 if (!wdev->wiphy) { 2082 dev_err(dev, "cannot allocate wiphy\n"); 2083 ret = -ENOMEM; 2084 goto err_wiphy_new; 2085 } 2086 2087 lbs_deb_leave(LBS_DEB_CFG80211); 2088 return wdev; 2089 2090 err_wiphy_new: 2091 kfree(wdev); 2092 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2093 return ERR_PTR(ret); 2094} 2095 2096 2097static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv) 2098{ 2099 struct region_code_mapping { 2100 const char *cn; 2101 int code; 2102 }; 2103 2104 /* Section 5.17.2 */ 2105 static const struct region_code_mapping regmap[] = { 2106 {"US ", 0x10}, /* US FCC */ 2107 {"CA ", 0x20}, /* Canada */ 2108 {"EU ", 0x30}, /* ETSI */ 2109 {"ES ", 0x31}, /* Spain */ 2110 {"FR ", 0x32}, /* France */ 2111 {"JP ", 0x40}, /* Japan */ 2112 }; 2113 size_t i; 2114 2115 lbs_deb_enter(LBS_DEB_CFG80211); 2116 2117 for (i = 0; i < ARRAY_SIZE(regmap); i++) 2118 if (regmap[i].code == priv->regioncode) { 2119 regulatory_hint(priv->wdev->wiphy, regmap[i].cn); 2120 break; 2121 } 2122 2123 lbs_deb_leave(LBS_DEB_CFG80211); 2124} 2125 2126static void lbs_reg_notifier(struct wiphy *wiphy, 2127 struct regulatory_request *request) 2128{ 2129 struct lbs_private *priv = wiphy_priv(wiphy); 2130 2131 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain " 2132 "callback for domain %c%c\n", request->alpha2[0], 2133 request->alpha2[1]); 2134 2135 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2)); 2136 if (lbs_iface_active(priv)) 2137 lbs_set_11d_domain_info(priv); 2138 2139 lbs_deb_leave(LBS_DEB_CFG80211); 2140} 2141 2142/* 2143 * This function get's called after lbs_setup_firmware() determined the 2144 * firmware capabities. So we can setup the wiphy according to our 2145 * hardware/firmware. 2146 */ 2147int lbs_cfg_register(struct lbs_private *priv) 2148{ 2149 struct wireless_dev *wdev = priv->wdev; 2150 int ret; 2151 2152 lbs_deb_enter(LBS_DEB_CFG80211); 2153 2154 wdev->wiphy->max_scan_ssids = 1; 2155 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 2156 2157 wdev->wiphy->interface_modes = 2158 BIT(NL80211_IFTYPE_STATION) | 2159 BIT(NL80211_IFTYPE_ADHOC); 2160 if (lbs_rtap_supported(priv)) 2161 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); 2162 if (lbs_mesh_activated(priv)) 2163 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT); 2164 2165 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz; 2166 2167 /* 2168 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have 2169 * never seen a firmware without WPA 2170 */ 2171 wdev->wiphy->cipher_suites = cipher_suites; 2172 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 2173 wdev->wiphy->reg_notifier = lbs_reg_notifier; 2174 2175 ret = wiphy_register(wdev->wiphy); 2176 if (ret < 0) 2177 pr_err("cannot register wiphy device\n"); 2178 2179 priv->wiphy_registered = true; 2180 2181 ret = register_netdev(priv->dev); 2182 if (ret) 2183 pr_err("cannot register network device\n"); 2184 2185 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker); 2186 2187 lbs_cfg_set_regulatory_hint(priv); 2188 2189 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2190 return ret; 2191} 2192 2193void lbs_scan_deinit(struct lbs_private *priv) 2194{ 2195 lbs_deb_enter(LBS_DEB_CFG80211); 2196 cancel_delayed_work_sync(&priv->scan_work); 2197} 2198 2199 2200void lbs_cfg_free(struct lbs_private *priv) 2201{ 2202 struct wireless_dev *wdev = priv->wdev; 2203 2204 lbs_deb_enter(LBS_DEB_CFG80211); 2205 2206 if (!wdev) 2207 return; 2208 2209 if (priv->wiphy_registered) 2210 wiphy_unregister(wdev->wiphy); 2211 2212 if (wdev->wiphy) 2213 wiphy_free(wdev->wiphy); 2214 2215 kfree(wdev); 2216} 2217