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 u8 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 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES); 302 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES); 303 304 /* 305 * 01 00 TLV_TYPE_RATES 306 * 04 00 len 307 * 82 84 8b 96 rates 308 */ 309 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES); 310 tlv += sizeof(rate_tlv->header); 311 312 /* Add basic rates */ 313 if (rates_eid) { 314 tlv = add_ie_rates(tlv, rates_eid, &n); 315 316 /* Add extended rates, if any */ 317 if (ext_rates_eid) 318 tlv = add_ie_rates(tlv, ext_rates_eid, &n); 319 } else { 320 lbs_deb_assoc("assoc: bss had no basic rate IE\n"); 321 /* Fallback: add basic 802.11b rates */ 322 *tlv++ = 0x82; 323 *tlv++ = 0x84; 324 *tlv++ = 0x8b; 325 *tlv++ = 0x96; 326 n = 4; 327 } 328 329 rate_tlv->header.len = cpu_to_le16(n); 330 return sizeof(rate_tlv->header) + n; 331} 332 333 334/* 335 * Add auth type TLV. 336 * 337 * This is only needed for newer firmware (V9 and up). 338 */ 339#define LBS_MAX_AUTH_TYPE_TLV_SIZE \ 340 sizeof(struct mrvl_ie_auth_type) 341 342static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type) 343{ 344 struct mrvl_ie_auth_type *auth = (void *) tlv; 345 346 /* 347 * 1f 01 TLV_TYPE_AUTH_TYPE 348 * 01 00 len 349 * 01 auth type 350 */ 351 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE); 352 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header)); 353 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type)); 354 return sizeof(*auth); 355} 356 357 358/* 359 * Add channel (phy ds) TLV 360 */ 361#define LBS_MAX_CHANNEL_TLV_SIZE \ 362 sizeof(struct mrvl_ie_header) 363 364static int lbs_add_channel_tlv(u8 *tlv, u8 channel) 365{ 366 struct mrvl_ie_ds_param_set *ds = (void *) tlv; 367 368 /* 369 * 03 00 TLV_TYPE_PHY_DS 370 * 01 00 len 371 * 06 channel 372 */ 373 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS); 374 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header)); 375 ds->channel = channel; 376 return sizeof(*ds); 377} 378 379 380/* 381 * Add (empty) CF param TLV of the form: 382 */ 383#define LBS_MAX_CF_PARAM_TLV_SIZE \ 384 sizeof(struct mrvl_ie_header) 385 386static int lbs_add_cf_param_tlv(u8 *tlv) 387{ 388 struct mrvl_ie_cf_param_set *cf = (void *)tlv; 389 390 /* 391 * 04 00 TLV_TYPE_CF 392 * 06 00 len 393 * 00 cfpcnt 394 * 00 cfpperiod 395 * 00 00 cfpmaxduration 396 * 00 00 cfpdurationremaining 397 */ 398 cf->header.type = cpu_to_le16(TLV_TYPE_CF); 399 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header)); 400 return sizeof(*cf); 401} 402 403/* 404 * Add WPA TLV 405 */ 406#define LBS_MAX_WPA_TLV_SIZE \ 407 (sizeof(struct mrvl_ie_header) \ 408 + 128 /* TODO: I guessed the size */) 409 410static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len) 411{ 412 size_t tlv_len; 413 414 /* 415 * We need just convert an IE to an TLV. IEs use u8 for the header, 416 * u8 type 417 * u8 len 418 * u8[] data 419 * but TLVs use __le16 instead: 420 * __le16 type 421 * __le16 len 422 * u8[] data 423 */ 424 *tlv++ = *ie++; 425 *tlv++ = 0; 426 tlv_len = *tlv++ = *ie++; 427 *tlv++ = 0; 428 while (tlv_len--) 429 *tlv++ = *ie++; 430 /* the TLV is two bytes larger than the IE */ 431 return ie_len + 2; 432} 433 434/* 435 * Set Channel 436 */ 437 438static int lbs_cfg_set_channel(struct wiphy *wiphy, 439 struct net_device *netdev, 440 struct ieee80211_channel *channel, 441 enum nl80211_channel_type channel_type) 442{ 443 struct lbs_private *priv = wiphy_priv(wiphy); 444 int ret = -ENOTSUPP; 445 446 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d, type %d", 447 netdev_name(netdev), channel->center_freq, channel_type); 448 449 if (channel_type != NL80211_CHAN_NO_HT) 450 goto out; 451 452 if (netdev == priv->mesh_dev) 453 ret = lbs_mesh_set_channel(priv, channel->hw_value); 454 else 455 ret = lbs_set_channel(priv, channel->hw_value); 456 457 out: 458 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 459 return ret; 460} 461 462 463 464/* 465 * Scanning 466 */ 467 468/* 469 * When scanning, the firmware doesn't send a nul packet with the power-safe 470 * bit to the AP. So we cannot stay away from our current channel too long, 471 * otherwise we loose data. So take a "nap" while scanning every other 472 * while. 473 */ 474#define LBS_SCAN_BEFORE_NAP 4 475 476 477/* 478 * When the firmware reports back a scan-result, it gives us an "u8 rssi", 479 * which isn't really an RSSI, as it becomes larger when moving away from 480 * the AP. Anyway, we need to convert that into mBm. 481 */ 482#define LBS_SCAN_RSSI_TO_MBM(rssi) \ 483 ((-(int)rssi + 3)*100) 484 485static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy, 486 struct cmd_header *resp) 487{ 488 struct cfg80211_bss *bss; 489 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp; 490 int bsssize; 491 const u8 *pos; 492 const u8 *tsfdesc; 493 int tsfsize; 494 int i; 495 int ret = -EILSEQ; 496 497 lbs_deb_enter(LBS_DEB_CFG80211); 498 499 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize); 500 501 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n", 502 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size)); 503 504 if (scanresp->nr_sets == 0) { 505 ret = 0; 506 goto done; 507 } 508 509 /* 510 * The general layout of the scan response is described in chapter 511 * 5.7.1. Basically we have a common part, then any number of BSS 512 * descriptor sections. Finally we have section with the same number 513 * of TSFs. 514 * 515 * cmd_ds_802_11_scan_rsp 516 * cmd_header 517 * pos_size 518 * nr_sets 519 * bssdesc 1 520 * bssid 521 * rssi 522 * timestamp 523 * intvl 524 * capa 525 * IEs 526 * bssdesc 2 527 * bssdesc n 528 * MrvlIEtypes_TsfFimestamp_t 529 * TSF for BSS 1 530 * TSF for BSS 2 531 * TSF for BSS n 532 */ 533 534 pos = scanresp->bssdesc_and_tlvbuffer; 535 536 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer, 537 scanresp->bssdescriptsize); 538 539 tsfdesc = pos + bsssize; 540 tsfsize = 4 + 8 * scanresp->nr_sets; 541 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize); 542 543 /* Validity check: we expect a Marvell-Local TLV */ 544 i = get_unaligned_le16(tsfdesc); 545 tsfdesc += 2; 546 if (i != TLV_TYPE_TSFTIMESTAMP) { 547 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i); 548 goto done; 549 } 550 551 /* 552 * Validity check: the TLV holds TSF values with 8 bytes each, so 553 * the size in the TLV must match the nr_sets value 554 */ 555 i = get_unaligned_le16(tsfdesc); 556 tsfdesc += 2; 557 if (i / 8 != scanresp->nr_sets) { 558 lbs_deb_scan("scan response: invalid number of TSF timestamp " 559 "sets (expected %d got %d)\n", scanresp->nr_sets, 560 i / 8); 561 goto done; 562 } 563 564 for (i = 0; i < scanresp->nr_sets; i++) { 565 const u8 *bssid; 566 const u8 *ie; 567 int left; 568 int ielen; 569 int rssi; 570 u16 intvl; 571 u16 capa; 572 int chan_no = -1; 573 const u8 *ssid = NULL; 574 u8 ssid_len = 0; 575 DECLARE_SSID_BUF(ssid_buf); 576 577 int len = get_unaligned_le16(pos); 578 pos += 2; 579 580 /* BSSID */ 581 bssid = pos; 582 pos += ETH_ALEN; 583 /* RSSI */ 584 rssi = *pos++; 585 /* Packet time stamp */ 586 pos += 8; 587 /* Beacon interval */ 588 intvl = get_unaligned_le16(pos); 589 pos += 2; 590 /* Capabilities */ 591 capa = get_unaligned_le16(pos); 592 pos += 2; 593 594 /* To find out the channel, we must parse the IEs */ 595 ie = pos; 596 /* 597 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon 598 * interval, capabilities 599 */ 600 ielen = left = len - (6 + 1 + 8 + 2 + 2); 601 while (left >= 2) { 602 u8 id, elen; 603 id = *pos++; 604 elen = *pos++; 605 left -= 2; 606 if (elen > left || elen == 0) { 607 lbs_deb_scan("scan response: invalid IE fmt\n"); 608 goto done; 609 } 610 611 if (id == WLAN_EID_DS_PARAMS) 612 chan_no = *pos; 613 if (id == WLAN_EID_SSID) { 614 ssid = pos; 615 ssid_len = elen; 616 } 617 left -= elen; 618 pos += elen; 619 } 620 621 /* No channel, no luck */ 622 if (chan_no != -1) { 623 struct wiphy *wiphy = priv->wdev->wiphy; 624 int freq = ieee80211_channel_to_frequency(chan_no, 625 IEEE80211_BAND_2GHZ); 626 struct ieee80211_channel *channel = 627 ieee80211_get_channel(wiphy, freq); 628 629 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, " 630 "%d dBm\n", 631 bssid, capa, chan_no, 632 print_ssid(ssid_buf, ssid, ssid_len), 633 LBS_SCAN_RSSI_TO_MBM(rssi)/100); 634 635 if (channel && 636 !(channel->flags & IEEE80211_CHAN_DISABLED)) { 637 bss = cfg80211_inform_bss(wiphy, channel, 638 bssid, get_unaligned_le64(tsfdesc), 639 capa, intvl, ie, ielen, 640 LBS_SCAN_RSSI_TO_MBM(rssi), 641 GFP_KERNEL); 642 cfg80211_put_bss(bss); 643 } 644 } else 645 lbs_deb_scan("scan response: missing BSS channel IE\n"); 646 647 tsfdesc += 8; 648 } 649 ret = 0; 650 651 done: 652 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); 653 return ret; 654} 655 656 657/* 658 * Our scan command contains a TLV, consting of a SSID TLV, a channel list 659 * TLV and a rates TLV. Determine the maximum size of them: 660 */ 661#define LBS_SCAN_MAX_CMD_SIZE \ 662 (sizeof(struct cmd_ds_802_11_scan) \ 663 + LBS_MAX_SSID_TLV_SIZE \ 664 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \ 665 + LBS_MAX_RATES_TLV_SIZE) 666 667/* 668 * Assumes priv->scan_req is initialized and valid 669 * Assumes priv->scan_channel is initialized 670 */ 671static void lbs_scan_worker(struct work_struct *work) 672{ 673 struct lbs_private *priv = 674 container_of(work, struct lbs_private, scan_work.work); 675 struct cmd_ds_802_11_scan *scan_cmd; 676 u8 *tlv; /* pointer into our current, growing TLV storage area */ 677 int last_channel; 678 int running, carrier; 679 680 lbs_deb_enter(LBS_DEB_SCAN); 681 682 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL); 683 if (scan_cmd == NULL) 684 goto out_no_scan_cmd; 685 686 /* prepare fixed part of scan command */ 687 scan_cmd->bsstype = CMD_BSS_TYPE_ANY; 688 689 /* stop network while we're away from our main channel */ 690 running = !netif_queue_stopped(priv->dev); 691 carrier = netif_carrier_ok(priv->dev); 692 if (running) 693 netif_stop_queue(priv->dev); 694 if (carrier) 695 netif_carrier_off(priv->dev); 696 697 /* prepare fixed part of scan command */ 698 tlv = scan_cmd->tlvbuffer; 699 700 /* add SSID TLV */ 701 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0) 702 tlv += lbs_add_ssid_tlv(tlv, 703 priv->scan_req->ssids[0].ssid, 704 priv->scan_req->ssids[0].ssid_len); 705 706 /* add channel TLVs */ 707 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP; 708 if (last_channel > priv->scan_req->n_channels) 709 last_channel = priv->scan_req->n_channels; 710 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel, 711 priv->scan_req->n_ssids); 712 713 /* add rates TLV */ 714 tlv += lbs_add_supported_rates_tlv(tlv); 715 716 if (priv->scan_channel < priv->scan_req->n_channels) { 717 cancel_delayed_work(&priv->scan_work); 718 if (netif_running(priv->dev)) 719 queue_delayed_work(priv->work_thread, &priv->scan_work, 720 msecs_to_jiffies(300)); 721 } 722 723 /* This is the final data we are about to send */ 724 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd); 725 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd, 726 sizeof(*scan_cmd)); 727 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer, 728 tlv - scan_cmd->tlvbuffer); 729 730 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr, 731 le16_to_cpu(scan_cmd->hdr.size), 732 lbs_ret_scan, 0); 733 734 if (priv->scan_channel >= priv->scan_req->n_channels) { 735 /* Mark scan done */ 736 cancel_delayed_work(&priv->scan_work); 737 lbs_scan_done(priv); 738 } 739 740 /* Restart network */ 741 if (carrier) 742 netif_carrier_on(priv->dev); 743 if (running && !priv->tx_pending_len) 744 netif_wake_queue(priv->dev); 745 746 kfree(scan_cmd); 747 748 /* Wake up anything waiting on scan completion */ 749 if (priv->scan_req == NULL) { 750 lbs_deb_scan("scan: waking up waiters\n"); 751 wake_up_all(&priv->scan_q); 752 } 753 754 out_no_scan_cmd: 755 lbs_deb_leave(LBS_DEB_SCAN); 756} 757 758static void _internal_start_scan(struct lbs_private *priv, bool internal, 759 struct cfg80211_scan_request *request) 760{ 761 lbs_deb_enter(LBS_DEB_CFG80211); 762 763 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n", 764 request->n_ssids, request->n_channels, request->ie_len); 765 766 priv->scan_channel = 0; 767 priv->scan_req = request; 768 priv->internal_scan = internal; 769 770 queue_delayed_work(priv->work_thread, &priv->scan_work, 771 msecs_to_jiffies(50)); 772 773 lbs_deb_leave(LBS_DEB_CFG80211); 774} 775 776/* 777 * Clean up priv->scan_req. Should be used to handle the allocation details. 778 */ 779void lbs_scan_done(struct lbs_private *priv) 780{ 781 WARN_ON(!priv->scan_req); 782 783 if (priv->internal_scan) 784 kfree(priv->scan_req); 785 else 786 cfg80211_scan_done(priv->scan_req, false); 787 788 priv->scan_req = NULL; 789} 790 791static int lbs_cfg_scan(struct wiphy *wiphy, 792 struct net_device *dev, 793 struct cfg80211_scan_request *request) 794{ 795 struct lbs_private *priv = wiphy_priv(wiphy); 796 int ret = 0; 797 798 lbs_deb_enter(LBS_DEB_CFG80211); 799 800 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) { 801 /* old scan request not yet processed */ 802 ret = -EAGAIN; 803 goto out; 804 } 805 806 _internal_start_scan(priv, false, request); 807 808 if (priv->surpriseremoved) 809 ret = -EIO; 810 811 out: 812 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 813 return ret; 814} 815 816 817 818 819/* 820 * Events 821 */ 822 823void lbs_send_disconnect_notification(struct lbs_private *priv) 824{ 825 lbs_deb_enter(LBS_DEB_CFG80211); 826 827 cfg80211_disconnected(priv->dev, 828 0, 829 NULL, 0, 830 GFP_KERNEL); 831 832 lbs_deb_leave(LBS_DEB_CFG80211); 833} 834 835void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event) 836{ 837 lbs_deb_enter(LBS_DEB_CFG80211); 838 839 cfg80211_michael_mic_failure(priv->dev, 840 priv->assoc_bss, 841 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ? 842 NL80211_KEYTYPE_GROUP : 843 NL80211_KEYTYPE_PAIRWISE, 844 -1, 845 NULL, 846 GFP_KERNEL); 847 848 lbs_deb_leave(LBS_DEB_CFG80211); 849} 850 851 852 853 854/* 855 * Connect/disconnect 856 */ 857 858 859/* 860 * This removes all WEP keys 861 */ 862static int lbs_remove_wep_keys(struct lbs_private *priv) 863{ 864 struct cmd_ds_802_11_set_wep cmd; 865 int ret; 866 867 lbs_deb_enter(LBS_DEB_CFG80211); 868 869 memset(&cmd, 0, sizeof(cmd)); 870 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 871 cmd.keyindex = cpu_to_le16(priv->wep_tx_key); 872 cmd.action = cpu_to_le16(CMD_ACT_REMOVE); 873 874 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd); 875 876 lbs_deb_leave(LBS_DEB_CFG80211); 877 return ret; 878} 879 880/* 881 * Set WEP keys 882 */ 883static int lbs_set_wep_keys(struct lbs_private *priv) 884{ 885 struct cmd_ds_802_11_set_wep cmd; 886 int i; 887 int ret; 888 889 lbs_deb_enter(LBS_DEB_CFG80211); 890 891 /* 892 * command 13 00 893 * size 50 00 894 * sequence xx xx 895 * result 00 00 896 * action 02 00 ACT_ADD 897 * transmit key 00 00 898 * type for key 1 01 WEP40 899 * type for key 2 00 900 * type for key 3 00 901 * type for key 4 00 902 * key 1 39 39 39 39 39 00 00 00 903 * 00 00 00 00 00 00 00 00 904 * key 2 00 00 00 00 00 00 00 00 905 * 00 00 00 00 00 00 00 00 906 * key 3 00 00 00 00 00 00 00 00 907 * 00 00 00 00 00 00 00 00 908 * key 4 00 00 00 00 00 00 00 00 909 */ 910 if (priv->wep_key_len[0] || priv->wep_key_len[1] || 911 priv->wep_key_len[2] || priv->wep_key_len[3]) { 912 /* Only set wep keys if we have at least one of them */ 913 memset(&cmd, 0, sizeof(cmd)); 914 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 915 cmd.keyindex = cpu_to_le16(priv->wep_tx_key); 916 cmd.action = cpu_to_le16(CMD_ACT_ADD); 917 918 for (i = 0; i < 4; i++) { 919 switch (priv->wep_key_len[i]) { 920 case WLAN_KEY_LEN_WEP40: 921 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT; 922 break; 923 case WLAN_KEY_LEN_WEP104: 924 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT; 925 break; 926 default: 927 cmd.keytype[i] = 0; 928 break; 929 } 930 memcpy(cmd.keymaterial[i], priv->wep_key[i], 931 priv->wep_key_len[i]); 932 } 933 934 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd); 935 } else { 936 /* Otherwise remove all wep keys */ 937 ret = lbs_remove_wep_keys(priv); 938 } 939 940 lbs_deb_leave(LBS_DEB_CFG80211); 941 return ret; 942} 943 944 945/* 946 * Enable/Disable RSN status 947 */ 948static int lbs_enable_rsn(struct lbs_private *priv, int enable) 949{ 950 struct cmd_ds_802_11_enable_rsn cmd; 951 int ret; 952 953 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable); 954 955 /* 956 * cmd 2f 00 957 * size 0c 00 958 * sequence xx xx 959 * result 00 00 960 * action 01 00 ACT_SET 961 * enable 01 00 962 */ 963 memset(&cmd, 0, sizeof(cmd)); 964 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 965 cmd.action = cpu_to_le16(CMD_ACT_SET); 966 cmd.enable = cpu_to_le16(enable); 967 968 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd); 969 970 lbs_deb_leave(LBS_DEB_CFG80211); 971 return ret; 972} 973 974 975/* 976 * Set WPA/WPA key material 977 */ 978 979/* 980 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we 981 * get rid of WEXT, this should go into host.h 982 */ 983 984struct cmd_key_material { 985 struct cmd_header hdr; 986 987 __le16 action; 988 struct MrvlIEtype_keyParamSet param; 989} __packed; 990 991static int lbs_set_key_material(struct lbs_private *priv, 992 int key_type, 993 int key_info, 994 u8 *key, u16 key_len) 995{ 996 struct cmd_key_material cmd; 997 int ret; 998 999 lbs_deb_enter(LBS_DEB_CFG80211); 1000 1001 /* 1002 * Example for WPA (TKIP): 1003 * 1004 * cmd 5e 00 1005 * size 34 00 1006 * sequence xx xx 1007 * result 00 00 1008 * action 01 00 1009 * TLV type 00 01 key param 1010 * length 00 26 1011 * key type 01 00 TKIP 1012 * key info 06 00 UNICAST | ENABLED 1013 * key len 20 00 1014 * key 32 bytes 1015 */ 1016 memset(&cmd, 0, sizeof(cmd)); 1017 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1018 cmd.action = cpu_to_le16(CMD_ACT_SET); 1019 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL); 1020 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4); 1021 cmd.param.keytypeid = cpu_to_le16(key_type); 1022 cmd.param.keyinfo = cpu_to_le16(key_info); 1023 cmd.param.keylen = cpu_to_le16(key_len); 1024 if (key && key_len) 1025 memcpy(cmd.param.key, key, key_len); 1026 1027 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd); 1028 1029 lbs_deb_leave(LBS_DEB_CFG80211); 1030 return ret; 1031} 1032 1033 1034/* 1035 * Sets the auth type (open, shared, etc) in the firmware. That 1036 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware 1037 * command doesn't send an authentication frame at all, it just 1038 * stores the auth_type. 1039 */ 1040static int lbs_set_authtype(struct lbs_private *priv, 1041 struct cfg80211_connect_params *sme) 1042{ 1043 struct cmd_ds_802_11_authenticate cmd; 1044 int ret; 1045 1046 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type); 1047 1048 /* 1049 * cmd 11 00 1050 * size 19 00 1051 * sequence xx xx 1052 * result 00 00 1053 * BSS id 00 13 19 80 da 30 1054 * auth type 00 1055 * reserved 00 00 00 00 00 00 00 00 00 00 1056 */ 1057 memset(&cmd, 0, sizeof(cmd)); 1058 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1059 if (sme->bssid) 1060 memcpy(cmd.bssid, sme->bssid, ETH_ALEN); 1061 /* convert auth_type */ 1062 ret = lbs_auth_to_authtype(sme->auth_type); 1063 if (ret < 0) 1064 goto done; 1065 1066 cmd.authtype = ret; 1067 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd); 1068 1069 done: 1070 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1071 return ret; 1072} 1073 1074 1075/* 1076 * Create association request 1077 */ 1078#define LBS_ASSOC_MAX_CMD_SIZE \ 1079 (sizeof(struct cmd_ds_802_11_associate) \ 1080 - 512 /* cmd_ds_802_11_associate.iebuf */ \ 1081 + LBS_MAX_SSID_TLV_SIZE \ 1082 + LBS_MAX_CHANNEL_TLV_SIZE \ 1083 + LBS_MAX_CF_PARAM_TLV_SIZE \ 1084 + LBS_MAX_AUTH_TYPE_TLV_SIZE \ 1085 + LBS_MAX_WPA_TLV_SIZE) 1086 1087static int lbs_associate(struct lbs_private *priv, 1088 struct cfg80211_bss *bss, 1089 struct cfg80211_connect_params *sme) 1090{ 1091 struct cmd_ds_802_11_associate_response *resp; 1092 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE, 1093 GFP_KERNEL); 1094 const u8 *ssid_eid; 1095 size_t len, resp_ie_len; 1096 int status; 1097 int ret; 1098 u8 *pos = &(cmd->iebuf[0]); 1099 u8 *tmp; 1100 1101 lbs_deb_enter(LBS_DEB_CFG80211); 1102 1103 if (!cmd) { 1104 ret = -ENOMEM; 1105 goto done; 1106 } 1107 1108 /* 1109 * cmd 50 00 1110 * length 34 00 1111 * sequence xx xx 1112 * result 00 00 1113 * BSS id 00 13 19 80 da 30 1114 * capabilities 11 00 1115 * listen interval 0a 00 1116 * beacon interval 00 00 1117 * DTIM period 00 1118 * TLVs xx (up to 512 bytes) 1119 */ 1120 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE); 1121 1122 /* Fill in static fields */ 1123 memcpy(cmd->bssid, bss->bssid, ETH_ALEN); 1124 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL); 1125 cmd->capability = cpu_to_le16(bss->capability); 1126 1127 /* add SSID TLV */ 1128 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); 1129 if (ssid_eid) 1130 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]); 1131 else 1132 lbs_deb_assoc("no SSID\n"); 1133 1134 /* add DS param TLV */ 1135 if (bss->channel) 1136 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value); 1137 else 1138 lbs_deb_assoc("no channel\n"); 1139 1140 /* add (empty) CF param TLV */ 1141 pos += lbs_add_cf_param_tlv(pos); 1142 1143 /* add rates TLV */ 1144 tmp = pos + 4; /* skip Marvell IE header */ 1145 pos += lbs_add_common_rates_tlv(pos, bss); 1146 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp); 1147 1148 /* add auth type TLV */ 1149 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9) 1150 pos += lbs_add_auth_type_tlv(pos, sme->auth_type); 1151 1152 /* add WPA/WPA2 TLV */ 1153 if (sme->ie && sme->ie_len) 1154 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len); 1155 1156 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) + 1157 (u16)(pos - (u8 *) &cmd->iebuf); 1158 cmd->hdr.size = cpu_to_le16(len); 1159 1160 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd, 1161 le16_to_cpu(cmd->hdr.size)); 1162 1163 /* store for later use */ 1164 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN); 1165 1166 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd); 1167 if (ret) 1168 goto done; 1169 1170 /* generate connect message to cfg80211 */ 1171 1172 resp = (void *) cmd; /* recast for easier field access */ 1173 status = le16_to_cpu(resp->statuscode); 1174 1175 /* Older FW versions map the IEEE 802.11 Status Code in the association 1176 * response to the following values returned in resp->statuscode: 1177 * 1178 * IEEE Status Code Marvell Status Code 1179 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS 1180 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1181 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1182 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1183 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1184 * others -> 0x0003 ASSOC_RESULT_REFUSED 1185 * 1186 * Other response codes: 1187 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused) 1188 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for 1189 * association response from the AP) 1190 */ 1191 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) { 1192 switch (status) { 1193 case 0: 1194 break; 1195 case 1: 1196 lbs_deb_assoc("invalid association parameters\n"); 1197 status = WLAN_STATUS_CAPS_UNSUPPORTED; 1198 break; 1199 case 2: 1200 lbs_deb_assoc("timer expired while waiting for AP\n"); 1201 status = WLAN_STATUS_AUTH_TIMEOUT; 1202 break; 1203 case 3: 1204 lbs_deb_assoc("association refused by AP\n"); 1205 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC; 1206 break; 1207 case 4: 1208 lbs_deb_assoc("authentication refused by AP\n"); 1209 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; 1210 break; 1211 default: 1212 lbs_deb_assoc("association failure %d\n", status); 1213 /* v5 OLPC firmware does return the AP status code if 1214 * it's not one of the values above. Let that through. 1215 */ 1216 break; 1217 } 1218 } 1219 1220 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, " 1221 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode), 1222 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid)); 1223 1224 resp_ie_len = le16_to_cpu(resp->hdr.size) 1225 - sizeof(resp->hdr) 1226 - 6; 1227 cfg80211_connect_result(priv->dev, 1228 priv->assoc_bss, 1229 sme->ie, sme->ie_len, 1230 resp->iebuf, resp_ie_len, 1231 status, 1232 GFP_KERNEL); 1233 1234 if (status == 0) { 1235 /* TODO: get rid of priv->connect_status */ 1236 priv->connect_status = LBS_CONNECTED; 1237 netif_carrier_on(priv->dev); 1238 if (!priv->tx_pending_len) 1239 netif_tx_wake_all_queues(priv->dev); 1240 } 1241 1242done: 1243 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1244 return ret; 1245} 1246 1247static struct cfg80211_scan_request * 1248_new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme) 1249{ 1250 struct cfg80211_scan_request *creq = NULL; 1251 int i, n_channels = 0; 1252 enum ieee80211_band band; 1253 1254 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 1255 if (wiphy->bands[band]) 1256 n_channels += wiphy->bands[band]->n_channels; 1257 } 1258 1259 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) + 1260 n_channels * sizeof(void *), 1261 GFP_ATOMIC); 1262 if (!creq) 1263 return NULL; 1264 1265 /* SSIDs come after channels */ 1266 creq->ssids = (void *)&creq->channels[n_channels]; 1267 creq->n_channels = n_channels; 1268 creq->n_ssids = 1; 1269 1270 /* Scan all available channels */ 1271 i = 0; 1272 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 1273 int j; 1274 1275 if (!wiphy->bands[band]) 1276 continue; 1277 1278 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 1279 /* ignore disabled channels */ 1280 if (wiphy->bands[band]->channels[j].flags & 1281 IEEE80211_CHAN_DISABLED) 1282 continue; 1283 1284 creq->channels[i] = &wiphy->bands[band]->channels[j]; 1285 i++; 1286 } 1287 } 1288 if (i) { 1289 /* Set real number of channels specified in creq->channels[] */ 1290 creq->n_channels = i; 1291 1292 /* Scan for the SSID we're going to connect to */ 1293 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len); 1294 creq->ssids[0].ssid_len = sme->ssid_len; 1295 } else { 1296 /* No channels found... */ 1297 kfree(creq); 1298 creq = NULL; 1299 } 1300 1301 return creq; 1302} 1303 1304static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev, 1305 struct cfg80211_connect_params *sme) 1306{ 1307 struct lbs_private *priv = wiphy_priv(wiphy); 1308 struct cfg80211_bss *bss = NULL; 1309 int ret = 0; 1310 u8 preamble = RADIO_PREAMBLE_SHORT; 1311 1312 if (dev == priv->mesh_dev) 1313 return -EOPNOTSUPP; 1314 1315 lbs_deb_enter(LBS_DEB_CFG80211); 1316 1317 if (!sme->bssid) { 1318 struct cfg80211_scan_request *creq; 1319 1320 /* 1321 * Scan for the requested network after waiting for existing 1322 * scans to finish. 1323 */ 1324 lbs_deb_assoc("assoc: waiting for existing scans\n"); 1325 wait_event_interruptible_timeout(priv->scan_q, 1326 (priv->scan_req == NULL), 1327 (15 * HZ)); 1328 1329 creq = _new_connect_scan_req(wiphy, sme); 1330 if (!creq) { 1331 ret = -EINVAL; 1332 goto done; 1333 } 1334 1335 lbs_deb_assoc("assoc: scanning for compatible AP\n"); 1336 _internal_start_scan(priv, true, creq); 1337 1338 lbs_deb_assoc("assoc: waiting for scan to complete\n"); 1339 wait_event_interruptible_timeout(priv->scan_q, 1340 (priv->scan_req == NULL), 1341 (15 * HZ)); 1342 lbs_deb_assoc("assoc: scanning competed\n"); 1343 } 1344 1345 /* Find the BSS we want using available scan results */ 1346 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid, 1347 sme->ssid, sme->ssid_len, 1348 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); 1349 if (!bss) { 1350 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n", 1351 sme->bssid); 1352 ret = -ENOENT; 1353 goto done; 1354 } 1355 lbs_deb_assoc("trying %pM\n", bss->bssid); 1356 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n", 1357 sme->crypto.cipher_group, 1358 sme->key_idx, sme->key_len); 1359 1360 /* As this is a new connection, clear locally stored WEP keys */ 1361 priv->wep_tx_key = 0; 1362 memset(priv->wep_key, 0, sizeof(priv->wep_key)); 1363 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len)); 1364 1365 /* set/remove WEP keys */ 1366 switch (sme->crypto.cipher_group) { 1367 case WLAN_CIPHER_SUITE_WEP40: 1368 case WLAN_CIPHER_SUITE_WEP104: 1369 /* Store provided WEP keys in priv-> */ 1370 priv->wep_tx_key = sme->key_idx; 1371 priv->wep_key_len[sme->key_idx] = sme->key_len; 1372 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len); 1373 /* Set WEP keys and WEP mode */ 1374 lbs_set_wep_keys(priv); 1375 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE; 1376 lbs_set_mac_control(priv); 1377 /* No RSN mode for WEP */ 1378 lbs_enable_rsn(priv, 0); 1379 break; 1380 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */ 1381 /* 1382 * If we don't have no WEP, no WPA and no WPA2, 1383 * we remove all keys like in the WPA/WPA2 setup, 1384 * we just don't set RSN. 1385 * 1386 * Therefore: fall-through 1387 */ 1388 case WLAN_CIPHER_SUITE_TKIP: 1389 case WLAN_CIPHER_SUITE_CCMP: 1390 /* Remove WEP keys and WEP mode */ 1391 lbs_remove_wep_keys(priv); 1392 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE; 1393 lbs_set_mac_control(priv); 1394 1395 /* clear the WPA/WPA2 keys */ 1396 lbs_set_key_material(priv, 1397 KEY_TYPE_ID_WEP, /* doesn't matter */ 1398 KEY_INFO_WPA_UNICAST, 1399 NULL, 0); 1400 lbs_set_key_material(priv, 1401 KEY_TYPE_ID_WEP, /* doesn't matter */ 1402 KEY_INFO_WPA_MCAST, 1403 NULL, 0); 1404 /* RSN mode for WPA/WPA2 */ 1405 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0); 1406 break; 1407 default: 1408 wiphy_err(wiphy, "unsupported cipher group 0x%x\n", 1409 sme->crypto.cipher_group); 1410 ret = -ENOTSUPP; 1411 goto done; 1412 } 1413 1414 lbs_set_authtype(priv, sme); 1415 lbs_set_radio(priv, preamble, 1); 1416 1417 /* Do the actual association */ 1418 ret = lbs_associate(priv, bss, sme); 1419 1420 done: 1421 if (bss) 1422 cfg80211_put_bss(bss); 1423 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1424 return ret; 1425} 1426 1427int lbs_disconnect(struct lbs_private *priv, u16 reason) 1428{ 1429 struct cmd_ds_802_11_deauthenticate cmd; 1430 int ret; 1431 1432 memset(&cmd, 0, sizeof(cmd)); 1433 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1434 /* Mildly ugly to use a locally store my own BSSID ... */ 1435 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN); 1436 cmd.reasoncode = cpu_to_le16(reason); 1437 1438 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd); 1439 if (ret) 1440 return ret; 1441 1442 cfg80211_disconnected(priv->dev, 1443 reason, 1444 NULL, 0, 1445 GFP_KERNEL); 1446 priv->connect_status = LBS_DISCONNECTED; 1447 1448 return 0; 1449} 1450 1451static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev, 1452 u16 reason_code) 1453{ 1454 struct lbs_private *priv = wiphy_priv(wiphy); 1455 1456 if (dev == priv->mesh_dev) 1457 return -EOPNOTSUPP; 1458 1459 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code); 1460 1461 /* store for lbs_cfg_ret_disconnect() */ 1462 priv->disassoc_reason = reason_code; 1463 1464 return lbs_disconnect(priv, reason_code); 1465} 1466 1467static int lbs_cfg_set_default_key(struct wiphy *wiphy, 1468 struct net_device *netdev, 1469 u8 key_index, bool unicast, 1470 bool multicast) 1471{ 1472 struct lbs_private *priv = wiphy_priv(wiphy); 1473 1474 if (netdev == priv->mesh_dev) 1475 return -EOPNOTSUPP; 1476 1477 lbs_deb_enter(LBS_DEB_CFG80211); 1478 1479 if (key_index != priv->wep_tx_key) { 1480 lbs_deb_assoc("set_default_key: to %d\n", key_index); 1481 priv->wep_tx_key = key_index; 1482 lbs_set_wep_keys(priv); 1483 } 1484 1485 return 0; 1486} 1487 1488 1489static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev, 1490 u8 idx, bool pairwise, const u8 *mac_addr, 1491 struct key_params *params) 1492{ 1493 struct lbs_private *priv = wiphy_priv(wiphy); 1494 u16 key_info; 1495 u16 key_type; 1496 int ret = 0; 1497 1498 if (netdev == priv->mesh_dev) 1499 return -EOPNOTSUPP; 1500 1501 lbs_deb_enter(LBS_DEB_CFG80211); 1502 1503 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n", 1504 params->cipher, mac_addr); 1505 lbs_deb_assoc("add_key: key index %d, key len %d\n", 1506 idx, params->key_len); 1507 if (params->key_len) 1508 lbs_deb_hex(LBS_DEB_CFG80211, "KEY", 1509 params->key, params->key_len); 1510 1511 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len); 1512 if (params->seq_len) 1513 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ", 1514 params->seq, params->seq_len); 1515 1516 switch (params->cipher) { 1517 case WLAN_CIPHER_SUITE_WEP40: 1518 case WLAN_CIPHER_SUITE_WEP104: 1519 /* actually compare if something has changed ... */ 1520 if ((priv->wep_key_len[idx] != params->key_len) || 1521 memcmp(priv->wep_key[idx], 1522 params->key, params->key_len) != 0) { 1523 priv->wep_key_len[idx] = params->key_len; 1524 memcpy(priv->wep_key[idx], 1525 params->key, params->key_len); 1526 lbs_set_wep_keys(priv); 1527 } 1528 break; 1529 case WLAN_CIPHER_SUITE_TKIP: 1530 case WLAN_CIPHER_SUITE_CCMP: 1531 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0) 1532 ? KEY_INFO_WPA_UNICAST 1533 : KEY_INFO_WPA_MCAST); 1534 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP) 1535 ? KEY_TYPE_ID_TKIP 1536 : KEY_TYPE_ID_AES; 1537 lbs_set_key_material(priv, 1538 key_type, 1539 key_info, 1540 params->key, params->key_len); 1541 break; 1542 default: 1543 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher); 1544 ret = -ENOTSUPP; 1545 break; 1546 } 1547 1548 return ret; 1549} 1550 1551 1552static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev, 1553 u8 key_index, bool pairwise, const u8 *mac_addr) 1554{ 1555 1556 lbs_deb_enter(LBS_DEB_CFG80211); 1557 1558 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n", 1559 key_index, mac_addr); 1560 1561#ifdef TODO 1562 struct lbs_private *priv = wiphy_priv(wiphy); 1563 /* 1564 * I think can keep this a NO-OP, because: 1565 1566 * - we clear all keys whenever we do lbs_cfg_connect() anyway 1567 * - neither "iw" nor "wpa_supplicant" won't call this during 1568 * an ongoing connection 1569 * - TODO: but I have to check if this is still true when 1570 * I set the AP to periodic re-keying 1571 * - we've not kzallec() something when we've added a key at 1572 * lbs_cfg_connect() or lbs_cfg_add_key(). 1573 * 1574 * This causes lbs_cfg_del_key() only called at disconnect time, 1575 * where we'd just waste time deleting a key that is not going 1576 * to be used anyway. 1577 */ 1578 if (key_index < 3 && priv->wep_key_len[key_index]) { 1579 priv->wep_key_len[key_index] = 0; 1580 lbs_set_wep_keys(priv); 1581 } 1582#endif 1583 1584 return 0; 1585} 1586 1587 1588/* 1589 * Get station 1590 */ 1591 1592static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev, 1593 u8 *mac, struct station_info *sinfo) 1594{ 1595 struct lbs_private *priv = wiphy_priv(wiphy); 1596 s8 signal, noise; 1597 int ret; 1598 size_t i; 1599 1600 lbs_deb_enter(LBS_DEB_CFG80211); 1601 1602 sinfo->filled |= STATION_INFO_TX_BYTES | 1603 STATION_INFO_TX_PACKETS | 1604 STATION_INFO_RX_BYTES | 1605 STATION_INFO_RX_PACKETS; 1606 sinfo->tx_bytes = priv->dev->stats.tx_bytes; 1607 sinfo->tx_packets = priv->dev->stats.tx_packets; 1608 sinfo->rx_bytes = priv->dev->stats.rx_bytes; 1609 sinfo->rx_packets = priv->dev->stats.rx_packets; 1610 1611 /* Get current RSSI */ 1612 ret = lbs_get_rssi(priv, &signal, &noise); 1613 if (ret == 0) { 1614 sinfo->signal = signal; 1615 sinfo->filled |= STATION_INFO_SIGNAL; 1616 } 1617 1618 /* Convert priv->cur_rate from hw_value to NL80211 value */ 1619 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) { 1620 if (priv->cur_rate == lbs_rates[i].hw_value) { 1621 sinfo->txrate.legacy = lbs_rates[i].bitrate; 1622 sinfo->filled |= STATION_INFO_TX_BITRATE; 1623 break; 1624 } 1625 } 1626 1627 return 0; 1628} 1629 1630 1631 1632 1633/* 1634 * "Site survey", here just current channel and noise level 1635 */ 1636 1637static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev, 1638 int idx, struct survey_info *survey) 1639{ 1640 struct lbs_private *priv = wiphy_priv(wiphy); 1641 s8 signal, noise; 1642 int ret; 1643 1644 if (dev == priv->mesh_dev) 1645 return -EOPNOTSUPP; 1646 1647 if (idx != 0) 1648 ret = -ENOENT; 1649 1650 lbs_deb_enter(LBS_DEB_CFG80211); 1651 1652 survey->channel = ieee80211_get_channel(wiphy, 1653 ieee80211_channel_to_frequency(priv->channel, 1654 IEEE80211_BAND_2GHZ)); 1655 1656 ret = lbs_get_rssi(priv, &signal, &noise); 1657 if (ret == 0) { 1658 survey->filled = SURVEY_INFO_NOISE_DBM; 1659 survey->noise = noise; 1660 } 1661 1662 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1663 return ret; 1664} 1665 1666 1667 1668 1669/* 1670 * Change interface 1671 */ 1672 1673static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev, 1674 enum nl80211_iftype type, u32 *flags, 1675 struct vif_params *params) 1676{ 1677 struct lbs_private *priv = wiphy_priv(wiphy); 1678 int ret = 0; 1679 1680 if (dev == priv->mesh_dev) 1681 return -EOPNOTSUPP; 1682 1683 switch (type) { 1684 case NL80211_IFTYPE_MONITOR: 1685 case NL80211_IFTYPE_STATION: 1686 case NL80211_IFTYPE_ADHOC: 1687 break; 1688 default: 1689 return -EOPNOTSUPP; 1690 } 1691 1692 lbs_deb_enter(LBS_DEB_CFG80211); 1693 1694 if (priv->iface_running) 1695 ret = lbs_set_iface_type(priv, type); 1696 1697 if (!ret) 1698 priv->wdev->iftype = type; 1699 1700 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1701 return ret; 1702} 1703 1704 1705 1706/* 1707 * IBSS (Ad-Hoc) 1708 */ 1709 1710/* 1711 * The firmware needs the following bits masked out of the beacon-derived 1712 * capability field when associating/joining to a BSS: 1713 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused) 1714 */ 1715#define CAPINFO_MASK (~(0xda00)) 1716 1717 1718static void lbs_join_post(struct lbs_private *priv, 1719 struct cfg80211_ibss_params *params, 1720 u8 *bssid, u16 capability) 1721{ 1722 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */ 1723 2 + 4 + /* basic rates */ 1724 2 + 1 + /* DS parameter */ 1725 2 + 2 + /* atim */ 1726 2 + 8]; /* extended rates */ 1727 u8 *fake = fake_ie; 1728 struct cfg80211_bss *bss; 1729 1730 lbs_deb_enter(LBS_DEB_CFG80211); 1731 1732 /* 1733 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get 1734 * the real IE from the firmware. So we fabricate a fake IE based on 1735 * what the firmware actually sends (sniffed with wireshark). 1736 */ 1737 /* Fake SSID IE */ 1738 *fake++ = WLAN_EID_SSID; 1739 *fake++ = params->ssid_len; 1740 memcpy(fake, params->ssid, params->ssid_len); 1741 fake += params->ssid_len; 1742 /* Fake supported basic rates IE */ 1743 *fake++ = WLAN_EID_SUPP_RATES; 1744 *fake++ = 4; 1745 *fake++ = 0x82; 1746 *fake++ = 0x84; 1747 *fake++ = 0x8b; 1748 *fake++ = 0x96; 1749 /* Fake DS channel IE */ 1750 *fake++ = WLAN_EID_DS_PARAMS; 1751 *fake++ = 1; 1752 *fake++ = params->channel->hw_value; 1753 /* Fake IBSS params IE */ 1754 *fake++ = WLAN_EID_IBSS_PARAMS; 1755 *fake++ = 2; 1756 *fake++ = 0; /* ATIM=0 */ 1757 *fake++ = 0; 1758 /* Fake extended rates IE, TODO: don't add this for 802.11b only, 1759 * but I don't know how this could be checked */ 1760 *fake++ = WLAN_EID_EXT_SUPP_RATES; 1761 *fake++ = 8; 1762 *fake++ = 0x0c; 1763 *fake++ = 0x12; 1764 *fake++ = 0x18; 1765 *fake++ = 0x24; 1766 *fake++ = 0x30; 1767 *fake++ = 0x48; 1768 *fake++ = 0x60; 1769 *fake++ = 0x6c; 1770 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie); 1771 1772 bss = cfg80211_inform_bss(priv->wdev->wiphy, 1773 params->channel, 1774 bssid, 1775 0, 1776 capability, 1777 params->beacon_interval, 1778 fake_ie, fake - fake_ie, 1779 0, GFP_KERNEL); 1780 cfg80211_put_bss(bss); 1781 1782 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len); 1783 priv->wdev->ssid_len = params->ssid_len; 1784 1785 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL); 1786 1787 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */ 1788 priv->connect_status = LBS_CONNECTED; 1789 netif_carrier_on(priv->dev); 1790 if (!priv->tx_pending_len) 1791 netif_wake_queue(priv->dev); 1792 1793 lbs_deb_leave(LBS_DEB_CFG80211); 1794} 1795 1796static int lbs_ibss_join_existing(struct lbs_private *priv, 1797 struct cfg80211_ibss_params *params, 1798 struct cfg80211_bss *bss) 1799{ 1800 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES); 1801 struct cmd_ds_802_11_ad_hoc_join cmd; 1802 u8 preamble = RADIO_PREAMBLE_SHORT; 1803 int ret = 0; 1804 1805 lbs_deb_enter(LBS_DEB_CFG80211); 1806 1807 /* TODO: set preamble based on scan result */ 1808 ret = lbs_set_radio(priv, preamble, 1); 1809 if (ret) 1810 goto out; 1811 1812 /* 1813 * Example CMD_802_11_AD_HOC_JOIN command: 1814 * 1815 * command 2c 00 CMD_802_11_AD_HOC_JOIN 1816 * size 65 00 1817 * sequence xx xx 1818 * result 00 00 1819 * bssid 02 27 27 97 2f 96 1820 * ssid 49 42 53 53 00 00 00 00 1821 * 00 00 00 00 00 00 00 00 1822 * 00 00 00 00 00 00 00 00 1823 * 00 00 00 00 00 00 00 00 1824 * type 02 CMD_BSS_TYPE_IBSS 1825 * beacon period 64 00 1826 * dtim period 00 1827 * timestamp 00 00 00 00 00 00 00 00 1828 * localtime 00 00 00 00 00 00 00 00 1829 * IE DS 03 1830 * IE DS len 01 1831 * IE DS channel 01 1832 * reserveed 00 00 00 00 1833 * IE IBSS 06 1834 * IE IBSS len 02 1835 * IE IBSS atim 00 00 1836 * reserved 00 00 00 00 1837 * capability 02 00 1838 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00 1839 * fail timeout ff 00 1840 * probe delay 00 00 1841 */ 1842 memset(&cmd, 0, sizeof(cmd)); 1843 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1844 1845 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN); 1846 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len); 1847 cmd.bss.type = CMD_BSS_TYPE_IBSS; 1848 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval); 1849 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS; 1850 cmd.bss.ds.header.len = 1; 1851 cmd.bss.ds.channel = params->channel->hw_value; 1852 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS; 1853 cmd.bss.ibss.header.len = 2; 1854 cmd.bss.ibss.atimwindow = 0; 1855 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK); 1856 1857 /* set rates to the intersection of our rates and the rates in the 1858 bss */ 1859 if (!rates_eid) { 1860 lbs_add_rates(cmd.bss.rates); 1861 } else { 1862 int hw, i; 1863 u8 rates_max = rates_eid[1]; 1864 u8 *rates = cmd.bss.rates; 1865 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) { 1866 u8 hw_rate = lbs_rates[hw].bitrate / 5; 1867 for (i = 0; i < rates_max; i++) { 1868 if (hw_rate == (rates_eid[i+2] & 0x7f)) { 1869 u8 rate = rates_eid[i+2]; 1870 if (rate == 0x02 || rate == 0x04 || 1871 rate == 0x0b || rate == 0x16) 1872 rate |= 0x80; 1873 *rates++ = rate; 1874 } 1875 } 1876 } 1877 } 1878 1879 /* Only v8 and below support setting this */ 1880 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) { 1881 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT); 1882 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME); 1883 } 1884 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd); 1885 if (ret) 1886 goto out; 1887 1888 /* 1889 * This is a sample response to CMD_802_11_AD_HOC_JOIN: 1890 * 1891 * response 2c 80 1892 * size 09 00 1893 * sequence xx xx 1894 * result 00 00 1895 * reserved 00 1896 */ 1897 lbs_join_post(priv, params, bss->bssid, bss->capability); 1898 1899 out: 1900 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1901 return ret; 1902} 1903 1904 1905 1906static int lbs_ibss_start_new(struct lbs_private *priv, 1907 struct cfg80211_ibss_params *params) 1908{ 1909 struct cmd_ds_802_11_ad_hoc_start cmd; 1910 struct cmd_ds_802_11_ad_hoc_result *resp = 1911 (struct cmd_ds_802_11_ad_hoc_result *) &cmd; 1912 u8 preamble = RADIO_PREAMBLE_SHORT; 1913 int ret = 0; 1914 u16 capability; 1915 1916 lbs_deb_enter(LBS_DEB_CFG80211); 1917 1918 ret = lbs_set_radio(priv, preamble, 1); 1919 if (ret) 1920 goto out; 1921 1922 /* 1923 * Example CMD_802_11_AD_HOC_START command: 1924 * 1925 * command 2b 00 CMD_802_11_AD_HOC_START 1926 * size b1 00 1927 * sequence xx xx 1928 * result 00 00 1929 * ssid 54 45 53 54 00 00 00 00 1930 * 00 00 00 00 00 00 00 00 1931 * 00 00 00 00 00 00 00 00 1932 * 00 00 00 00 00 00 00 00 1933 * bss type 02 1934 * beacon period 64 00 1935 * dtim period 00 1936 * IE IBSS 06 1937 * IE IBSS len 02 1938 * IE IBSS atim 00 00 1939 * reserved 00 00 00 00 1940 * IE DS 03 1941 * IE DS len 01 1942 * IE DS channel 01 1943 * reserved 00 00 00 00 1944 * probe delay 00 00 1945 * capability 02 00 1946 * rates 82 84 8b 96 (basic rates with have bit 7 set) 1947 * 0c 12 18 24 30 48 60 6c 1948 * padding 100 bytes 1949 */ 1950 memset(&cmd, 0, sizeof(cmd)); 1951 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1952 memcpy(cmd.ssid, params->ssid, params->ssid_len); 1953 cmd.bsstype = CMD_BSS_TYPE_IBSS; 1954 cmd.beaconperiod = cpu_to_le16(params->beacon_interval); 1955 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS; 1956 cmd.ibss.header.len = 2; 1957 cmd.ibss.atimwindow = 0; 1958 cmd.ds.header.id = WLAN_EID_DS_PARAMS; 1959 cmd.ds.header.len = 1; 1960 cmd.ds.channel = params->channel->hw_value; 1961 /* Only v8 and below support setting probe delay */ 1962 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) 1963 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME); 1964 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */ 1965 capability = WLAN_CAPABILITY_IBSS; 1966 cmd.capability = cpu_to_le16(capability); 1967 lbs_add_rates(cmd.rates); 1968 1969 1970 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd); 1971 if (ret) 1972 goto out; 1973 1974 /* 1975 * This is a sample response to CMD_802_11_AD_HOC_JOIN: 1976 * 1977 * response 2b 80 1978 * size 14 00 1979 * sequence xx xx 1980 * result 00 00 1981 * reserved 00 1982 * bssid 02 2b 7b 0f 86 0e 1983 */ 1984 lbs_join_post(priv, params, resp->bssid, capability); 1985 1986 out: 1987 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1988 return ret; 1989} 1990 1991 1992static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1993 struct cfg80211_ibss_params *params) 1994{ 1995 struct lbs_private *priv = wiphy_priv(wiphy); 1996 int ret = 0; 1997 struct cfg80211_bss *bss; 1998 DECLARE_SSID_BUF(ssid_buf); 1999 2000 if (dev == priv->mesh_dev) 2001 return -EOPNOTSUPP; 2002 2003 lbs_deb_enter(LBS_DEB_CFG80211); 2004 2005 if (!params->channel) { 2006 ret = -ENOTSUPP; 2007 goto out; 2008 } 2009 2010 ret = lbs_set_channel(priv, params->channel->hw_value); 2011 if (ret) 2012 goto out; 2013 2014 /* Search if someone is beaconing. This assumes that the 2015 * bss list is populated already */ 2016 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid, 2017 params->ssid, params->ssid_len, 2018 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 2019 2020 if (bss) { 2021 ret = lbs_ibss_join_existing(priv, params, bss); 2022 cfg80211_put_bss(bss); 2023 } else 2024 ret = lbs_ibss_start_new(priv, params); 2025 2026 2027 out: 2028 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2029 return ret; 2030} 2031 2032 2033static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2034{ 2035 struct lbs_private *priv = wiphy_priv(wiphy); 2036 struct cmd_ds_802_11_ad_hoc_stop cmd; 2037 int ret = 0; 2038 2039 if (dev == priv->mesh_dev) 2040 return -EOPNOTSUPP; 2041 2042 lbs_deb_enter(LBS_DEB_CFG80211); 2043 2044 memset(&cmd, 0, sizeof(cmd)); 2045 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 2046 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd); 2047 2048 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */ 2049 lbs_mac_event_disconnected(priv); 2050 2051 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2052 return ret; 2053} 2054 2055 2056 2057 2058/* 2059 * Initialization 2060 */ 2061 2062static struct cfg80211_ops lbs_cfg80211_ops = { 2063 .set_channel = lbs_cfg_set_channel, 2064 .scan = lbs_cfg_scan, 2065 .connect = lbs_cfg_connect, 2066 .disconnect = lbs_cfg_disconnect, 2067 .add_key = lbs_cfg_add_key, 2068 .del_key = lbs_cfg_del_key, 2069 .set_default_key = lbs_cfg_set_default_key, 2070 .get_station = lbs_cfg_get_station, 2071 .dump_survey = lbs_get_survey, 2072 .change_virtual_intf = lbs_change_intf, 2073 .join_ibss = lbs_join_ibss, 2074 .leave_ibss = lbs_leave_ibss, 2075}; 2076 2077 2078/* 2079 * At this time lbs_private *priv doesn't even exist, so we just allocate 2080 * memory and don't initialize the wiphy further. This is postponed until we 2081 * can talk to the firmware and happens at registration time in 2082 * lbs_cfg_wiphy_register(). 2083 */ 2084struct wireless_dev *lbs_cfg_alloc(struct device *dev) 2085{ 2086 int ret = 0; 2087 struct wireless_dev *wdev; 2088 2089 lbs_deb_enter(LBS_DEB_CFG80211); 2090 2091 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); 2092 if (!wdev) { 2093 dev_err(dev, "cannot allocate wireless device\n"); 2094 return ERR_PTR(-ENOMEM); 2095 } 2096 2097 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private)); 2098 if (!wdev->wiphy) { 2099 dev_err(dev, "cannot allocate wiphy\n"); 2100 ret = -ENOMEM; 2101 goto err_wiphy_new; 2102 } 2103 2104 lbs_deb_leave(LBS_DEB_CFG80211); 2105 return wdev; 2106 2107 err_wiphy_new: 2108 kfree(wdev); 2109 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2110 return ERR_PTR(ret); 2111} 2112 2113 2114static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv) 2115{ 2116 struct region_code_mapping { 2117 const char *cn; 2118 int code; 2119 }; 2120 2121 /* Section 5.17.2 */ 2122 static const struct region_code_mapping regmap[] = { 2123 {"US ", 0x10}, /* US FCC */ 2124 {"CA ", 0x20}, /* Canada */ 2125 {"EU ", 0x30}, /* ETSI */ 2126 {"ES ", 0x31}, /* Spain */ 2127 {"FR ", 0x32}, /* France */ 2128 {"JP ", 0x40}, /* Japan */ 2129 }; 2130 size_t i; 2131 2132 lbs_deb_enter(LBS_DEB_CFG80211); 2133 2134 for (i = 0; i < ARRAY_SIZE(regmap); i++) 2135 if (regmap[i].code == priv->regioncode) { 2136 regulatory_hint(priv->wdev->wiphy, regmap[i].cn); 2137 break; 2138 } 2139 2140 lbs_deb_leave(LBS_DEB_CFG80211); 2141} 2142 2143 2144/* 2145 * This function get's called after lbs_setup_firmware() determined the 2146 * firmware capabities. So we can setup the wiphy according to our 2147 * hardware/firmware. 2148 */ 2149int lbs_cfg_register(struct lbs_private *priv) 2150{ 2151 struct wireless_dev *wdev = priv->wdev; 2152 int ret; 2153 2154 lbs_deb_enter(LBS_DEB_CFG80211); 2155 2156 wdev->wiphy->max_scan_ssids = 1; 2157 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 2158 2159 wdev->wiphy->interface_modes = 2160 BIT(NL80211_IFTYPE_STATION) | 2161 BIT(NL80211_IFTYPE_ADHOC); 2162 if (lbs_rtap_supported(priv)) 2163 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); 2164 if (lbs_mesh_activated(priv)) 2165 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT); 2166 2167 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz; 2168 2169 /* 2170 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have 2171 * never seen a firmware without WPA 2172 */ 2173 wdev->wiphy->cipher_suites = cipher_suites; 2174 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 2175 wdev->wiphy->reg_notifier = lbs_reg_notifier; 2176 2177 ret = wiphy_register(wdev->wiphy); 2178 if (ret < 0) 2179 pr_err("cannot register wiphy device\n"); 2180 2181 priv->wiphy_registered = true; 2182 2183 ret = register_netdev(priv->dev); 2184 if (ret) 2185 pr_err("cannot register network device\n"); 2186 2187 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker); 2188 2189 lbs_cfg_set_regulatory_hint(priv); 2190 2191 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2192 return ret; 2193} 2194 2195int lbs_reg_notifier(struct wiphy *wiphy, 2196 struct regulatory_request *request) 2197{ 2198 struct lbs_private *priv = wiphy_priv(wiphy); 2199 int ret; 2200 2201 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain " 2202 "callback for domain %c%c\n", request->alpha2[0], 2203 request->alpha2[1]); 2204 2205 ret = lbs_set_11d_domain_info(priv, request, wiphy->bands); 2206 2207 lbs_deb_leave(LBS_DEB_CFG80211); 2208 return ret; 2209} 2210 2211void lbs_scan_deinit(struct lbs_private *priv) 2212{ 2213 lbs_deb_enter(LBS_DEB_CFG80211); 2214 cancel_delayed_work_sync(&priv->scan_work); 2215} 2216 2217 2218void lbs_cfg_free(struct lbs_private *priv) 2219{ 2220 struct wireless_dev *wdev = priv->wdev; 2221 2222 lbs_deb_enter(LBS_DEB_CFG80211); 2223 2224 if (!wdev) 2225 return; 2226 2227 if (priv->wiphy_registered) 2228 wiphy_unregister(wdev->wiphy); 2229 2230 if (wdev->wiphy) 2231 wiphy_free(wdev->wiphy); 2232 2233 kfree(wdev); 2234} 2235