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 = NL80211_BAND_2GHZ, \ 27 .center_freq = (_freq), \ 28 .hw_value = (_channel), \ 29 .flags = (_flags), \ 30 .max_antenna_gain = 0, \ 31 .max_power = 30, \ 32 } 33 34 static 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 */ 59 static 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 74 static 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 82 static 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 */ 106 static 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 */ 133 static 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) 163 164 static 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))) 188 189 static 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 */ 250 static 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 */ 269 static u8 * 270 add_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 */ 295 static 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) 343 344 static 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) 365 366 static 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) 387 388 static 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 */) 411 412 static 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 */ 439 440 static 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 } 459 460 static 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) 502 503 static 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 NL80211_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 */ 687 static 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 } 773 774 static 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 */ 795 void 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 struct cfg80211_scan_info info = { 803 .aborted = false, 804 }; 805 806 cfg80211_scan_done(priv->scan_req, &info); 807 } 808 809 priv->scan_req = NULL; 810 } 811 812 static int lbs_cfg_scan(struct wiphy *wiphy, 813 struct cfg80211_scan_request *request) 814 { 815 struct lbs_private *priv = wiphy_priv(wiphy); 816 int ret = 0; 817 818 lbs_deb_enter(LBS_DEB_CFG80211); 819 820 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) { 821 /* old scan request not yet processed */ 822 ret = -EAGAIN; 823 goto out; 824 } 825 826 _internal_start_scan(priv, false, request); 827 828 if (priv->surpriseremoved) 829 ret = -EIO; 830 831 out: 832 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 833 return ret; 834 } 835 836 837 838 839 /* 840 * Events 841 */ 842 843 void lbs_send_disconnect_notification(struct lbs_private *priv, 844 bool locally_generated) 845 { 846 lbs_deb_enter(LBS_DEB_CFG80211); 847 848 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated, 849 GFP_KERNEL); 850 851 lbs_deb_leave(LBS_DEB_CFG80211); 852 } 853 854 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event) 855 { 856 lbs_deb_enter(LBS_DEB_CFG80211); 857 858 cfg80211_michael_mic_failure(priv->dev, 859 priv->assoc_bss, 860 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ? 861 NL80211_KEYTYPE_GROUP : 862 NL80211_KEYTYPE_PAIRWISE, 863 -1, 864 NULL, 865 GFP_KERNEL); 866 867 lbs_deb_leave(LBS_DEB_CFG80211); 868 } 869 870 871 872 873 /* 874 * Connect/disconnect 875 */ 876 877 878 /* 879 * This removes all WEP keys 880 */ 881 static int lbs_remove_wep_keys(struct lbs_private *priv) 882 { 883 struct cmd_ds_802_11_set_wep cmd; 884 int ret; 885 886 lbs_deb_enter(LBS_DEB_CFG80211); 887 888 memset(&cmd, 0, sizeof(cmd)); 889 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 890 cmd.keyindex = cpu_to_le16(priv->wep_tx_key); 891 cmd.action = cpu_to_le16(CMD_ACT_REMOVE); 892 893 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd); 894 895 lbs_deb_leave(LBS_DEB_CFG80211); 896 return ret; 897 } 898 899 /* 900 * Set WEP keys 901 */ 902 static int lbs_set_wep_keys(struct lbs_private *priv) 903 { 904 struct cmd_ds_802_11_set_wep cmd; 905 int i; 906 int ret; 907 908 lbs_deb_enter(LBS_DEB_CFG80211); 909 910 /* 911 * command 13 00 912 * size 50 00 913 * sequence xx xx 914 * result 00 00 915 * action 02 00 ACT_ADD 916 * transmit key 00 00 917 * type for key 1 01 WEP40 918 * type for key 2 00 919 * type for key 3 00 920 * type for key 4 00 921 * key 1 39 39 39 39 39 00 00 00 922 * 00 00 00 00 00 00 00 00 923 * key 2 00 00 00 00 00 00 00 00 924 * 00 00 00 00 00 00 00 00 925 * key 3 00 00 00 00 00 00 00 00 926 * 00 00 00 00 00 00 00 00 927 * key 4 00 00 00 00 00 00 00 00 928 */ 929 if (priv->wep_key_len[0] || priv->wep_key_len[1] || 930 priv->wep_key_len[2] || priv->wep_key_len[3]) { 931 /* Only set wep keys if we have at least one of them */ 932 memset(&cmd, 0, sizeof(cmd)); 933 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 934 cmd.keyindex = cpu_to_le16(priv->wep_tx_key); 935 cmd.action = cpu_to_le16(CMD_ACT_ADD); 936 937 for (i = 0; i < 4; i++) { 938 switch (priv->wep_key_len[i]) { 939 case WLAN_KEY_LEN_WEP40: 940 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT; 941 break; 942 case WLAN_KEY_LEN_WEP104: 943 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT; 944 break; 945 default: 946 cmd.keytype[i] = 0; 947 break; 948 } 949 memcpy(cmd.keymaterial[i], priv->wep_key[i], 950 priv->wep_key_len[i]); 951 } 952 953 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd); 954 } else { 955 /* Otherwise remove all wep keys */ 956 ret = lbs_remove_wep_keys(priv); 957 } 958 959 lbs_deb_leave(LBS_DEB_CFG80211); 960 return ret; 961 } 962 963 964 /* 965 * Enable/Disable RSN status 966 */ 967 static int lbs_enable_rsn(struct lbs_private *priv, int enable) 968 { 969 struct cmd_ds_802_11_enable_rsn cmd; 970 int ret; 971 972 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable); 973 974 /* 975 * cmd 2f 00 976 * size 0c 00 977 * sequence xx xx 978 * result 00 00 979 * action 01 00 ACT_SET 980 * enable 01 00 981 */ 982 memset(&cmd, 0, sizeof(cmd)); 983 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 984 cmd.action = cpu_to_le16(CMD_ACT_SET); 985 cmd.enable = cpu_to_le16(enable); 986 987 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd); 988 989 lbs_deb_leave(LBS_DEB_CFG80211); 990 return ret; 991 } 992 993 994 /* 995 * Set WPA/WPA key material 996 */ 997 998 /* 999 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we 1000 * get rid of WEXT, this should go into host.h 1001 */ 1002 1003 struct cmd_key_material { 1004 struct cmd_header hdr; 1005 1006 __le16 action; 1007 struct MrvlIEtype_keyParamSet param; 1008 } __packed; 1009 1010 static int lbs_set_key_material(struct lbs_private *priv, 1011 int key_type, int key_info, 1012 const u8 *key, u16 key_len) 1013 { 1014 struct cmd_key_material cmd; 1015 int ret; 1016 1017 lbs_deb_enter(LBS_DEB_CFG80211); 1018 1019 /* 1020 * Example for WPA (TKIP): 1021 * 1022 * cmd 5e 00 1023 * size 34 00 1024 * sequence xx xx 1025 * result 00 00 1026 * action 01 00 1027 * TLV type 00 01 key param 1028 * length 00 26 1029 * key type 01 00 TKIP 1030 * key info 06 00 UNICAST | ENABLED 1031 * key len 20 00 1032 * key 32 bytes 1033 */ 1034 memset(&cmd, 0, sizeof(cmd)); 1035 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1036 cmd.action = cpu_to_le16(CMD_ACT_SET); 1037 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL); 1038 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4); 1039 cmd.param.keytypeid = cpu_to_le16(key_type); 1040 cmd.param.keyinfo = cpu_to_le16(key_info); 1041 cmd.param.keylen = cpu_to_le16(key_len); 1042 if (key && key_len) 1043 memcpy(cmd.param.key, key, key_len); 1044 1045 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd); 1046 1047 lbs_deb_leave(LBS_DEB_CFG80211); 1048 return ret; 1049 } 1050 1051 1052 /* 1053 * Sets the auth type (open, shared, etc) in the firmware. That 1054 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware 1055 * command doesn't send an authentication frame at all, it just 1056 * stores the auth_type. 1057 */ 1058 static int lbs_set_authtype(struct lbs_private *priv, 1059 struct cfg80211_connect_params *sme) 1060 { 1061 struct cmd_ds_802_11_authenticate cmd; 1062 int ret; 1063 1064 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type); 1065 1066 /* 1067 * cmd 11 00 1068 * size 19 00 1069 * sequence xx xx 1070 * result 00 00 1071 * BSS id 00 13 19 80 da 30 1072 * auth type 00 1073 * reserved 00 00 00 00 00 00 00 00 00 00 1074 */ 1075 memset(&cmd, 0, sizeof(cmd)); 1076 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1077 if (sme->bssid) 1078 memcpy(cmd.bssid, sme->bssid, ETH_ALEN); 1079 /* convert auth_type */ 1080 ret = lbs_auth_to_authtype(sme->auth_type); 1081 if (ret < 0) 1082 goto done; 1083 1084 cmd.authtype = ret; 1085 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd); 1086 1087 done: 1088 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1089 return ret; 1090 } 1091 1092 1093 /* 1094 * Create association request 1095 */ 1096 #define LBS_ASSOC_MAX_CMD_SIZE \ 1097 (sizeof(struct cmd_ds_802_11_associate) \ 1098 - 512 /* cmd_ds_802_11_associate.iebuf */ \ 1099 + LBS_MAX_SSID_TLV_SIZE \ 1100 + LBS_MAX_CHANNEL_TLV_SIZE \ 1101 + LBS_MAX_CF_PARAM_TLV_SIZE \ 1102 + LBS_MAX_AUTH_TYPE_TLV_SIZE \ 1103 + LBS_MAX_WPA_TLV_SIZE) 1104 1105 static int lbs_associate(struct lbs_private *priv, 1106 struct cfg80211_bss *bss, 1107 struct cfg80211_connect_params *sme) 1108 { 1109 struct cmd_ds_802_11_associate_response *resp; 1110 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE, 1111 GFP_KERNEL); 1112 const u8 *ssid_eid; 1113 size_t len, resp_ie_len; 1114 int status; 1115 int ret; 1116 u8 *pos; 1117 u8 *tmp; 1118 1119 lbs_deb_enter(LBS_DEB_CFG80211); 1120 1121 if (!cmd) { 1122 ret = -ENOMEM; 1123 goto done; 1124 } 1125 pos = &cmd->iebuf[0]; 1126 1127 /* 1128 * cmd 50 00 1129 * length 34 00 1130 * sequence xx xx 1131 * result 00 00 1132 * BSS id 00 13 19 80 da 30 1133 * capabilities 11 00 1134 * listen interval 0a 00 1135 * beacon interval 00 00 1136 * DTIM period 00 1137 * TLVs xx (up to 512 bytes) 1138 */ 1139 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE); 1140 1141 /* Fill in static fields */ 1142 memcpy(cmd->bssid, bss->bssid, ETH_ALEN); 1143 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL); 1144 cmd->capability = cpu_to_le16(bss->capability); 1145 1146 /* add SSID TLV */ 1147 rcu_read_lock(); 1148 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); 1149 if (ssid_eid) 1150 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]); 1151 else 1152 lbs_deb_assoc("no SSID\n"); 1153 rcu_read_unlock(); 1154 1155 /* add DS param TLV */ 1156 if (bss->channel) 1157 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value); 1158 else 1159 lbs_deb_assoc("no channel\n"); 1160 1161 /* add (empty) CF param TLV */ 1162 pos += lbs_add_cf_param_tlv(pos); 1163 1164 /* add rates TLV */ 1165 tmp = pos + 4; /* skip Marvell IE header */ 1166 pos += lbs_add_common_rates_tlv(pos, bss); 1167 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp); 1168 1169 /* add auth type TLV */ 1170 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9) 1171 pos += lbs_add_auth_type_tlv(pos, sme->auth_type); 1172 1173 /* add WPA/WPA2 TLV */ 1174 if (sme->ie && sme->ie_len) 1175 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len); 1176 1177 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) + 1178 (u16)(pos - (u8 *) &cmd->iebuf); 1179 cmd->hdr.size = cpu_to_le16(len); 1180 1181 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd, 1182 le16_to_cpu(cmd->hdr.size)); 1183 1184 /* store for later use */ 1185 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN); 1186 1187 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd); 1188 if (ret) 1189 goto done; 1190 1191 /* generate connect message to cfg80211 */ 1192 1193 resp = (void *) cmd; /* recast for easier field access */ 1194 status = le16_to_cpu(resp->statuscode); 1195 1196 /* Older FW versions map the IEEE 802.11 Status Code in the association 1197 * response to the following values returned in resp->statuscode: 1198 * 1199 * IEEE Status Code Marvell Status Code 1200 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS 1201 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1202 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1203 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1204 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED 1205 * others -> 0x0003 ASSOC_RESULT_REFUSED 1206 * 1207 * Other response codes: 1208 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused) 1209 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for 1210 * association response from the AP) 1211 */ 1212 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) { 1213 switch (status) { 1214 case 0: 1215 break; 1216 case 1: 1217 lbs_deb_assoc("invalid association parameters\n"); 1218 status = WLAN_STATUS_CAPS_UNSUPPORTED; 1219 break; 1220 case 2: 1221 lbs_deb_assoc("timer expired while waiting for AP\n"); 1222 status = WLAN_STATUS_AUTH_TIMEOUT; 1223 break; 1224 case 3: 1225 lbs_deb_assoc("association refused by AP\n"); 1226 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC; 1227 break; 1228 case 4: 1229 lbs_deb_assoc("authentication refused by AP\n"); 1230 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; 1231 break; 1232 default: 1233 lbs_deb_assoc("association failure %d\n", status); 1234 /* v5 OLPC firmware does return the AP status code if 1235 * it's not one of the values above. Let that through. 1236 */ 1237 break; 1238 } 1239 } 1240 1241 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, " 1242 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode), 1243 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid)); 1244 1245 resp_ie_len = le16_to_cpu(resp->hdr.size) 1246 - sizeof(resp->hdr) 1247 - 6; 1248 cfg80211_connect_result(priv->dev, 1249 priv->assoc_bss, 1250 sme->ie, sme->ie_len, 1251 resp->iebuf, resp_ie_len, 1252 status, 1253 GFP_KERNEL); 1254 1255 if (status == 0) { 1256 /* TODO: get rid of priv->connect_status */ 1257 priv->connect_status = LBS_CONNECTED; 1258 netif_carrier_on(priv->dev); 1259 if (!priv->tx_pending_len) 1260 netif_tx_wake_all_queues(priv->dev); 1261 } 1262 1263 kfree(cmd); 1264 done: 1265 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1266 return ret; 1267 } 1268 1269 static struct cfg80211_scan_request * 1270 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme) 1271 { 1272 struct cfg80211_scan_request *creq = NULL; 1273 int i, n_channels = ieee80211_get_num_supported_channels(wiphy); 1274 enum nl80211_band band; 1275 1276 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) + 1277 n_channels * sizeof(void *), 1278 GFP_ATOMIC); 1279 if (!creq) 1280 return NULL; 1281 1282 /* SSIDs come after channels */ 1283 creq->ssids = (void *)&creq->channels[n_channels]; 1284 creq->n_channels = n_channels; 1285 creq->n_ssids = 1; 1286 1287 /* Scan all available channels */ 1288 i = 0; 1289 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1290 int j; 1291 1292 if (!wiphy->bands[band]) 1293 continue; 1294 1295 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 1296 /* ignore disabled channels */ 1297 if (wiphy->bands[band]->channels[j].flags & 1298 IEEE80211_CHAN_DISABLED) 1299 continue; 1300 1301 creq->channels[i] = &wiphy->bands[band]->channels[j]; 1302 i++; 1303 } 1304 } 1305 if (i) { 1306 /* Set real number of channels specified in creq->channels[] */ 1307 creq->n_channels = i; 1308 1309 /* Scan for the SSID we're going to connect to */ 1310 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len); 1311 creq->ssids[0].ssid_len = sme->ssid_len; 1312 } else { 1313 /* No channels found... */ 1314 kfree(creq); 1315 creq = NULL; 1316 } 1317 1318 return creq; 1319 } 1320 1321 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev, 1322 struct cfg80211_connect_params *sme) 1323 { 1324 struct lbs_private *priv = wiphy_priv(wiphy); 1325 struct cfg80211_bss *bss = NULL; 1326 int ret = 0; 1327 u8 preamble = RADIO_PREAMBLE_SHORT; 1328 1329 if (dev == priv->mesh_dev) 1330 return -EOPNOTSUPP; 1331 1332 lbs_deb_enter(LBS_DEB_CFG80211); 1333 1334 if (!sme->bssid) { 1335 struct cfg80211_scan_request *creq; 1336 1337 /* 1338 * Scan for the requested network after waiting for existing 1339 * scans to finish. 1340 */ 1341 lbs_deb_assoc("assoc: waiting for existing scans\n"); 1342 wait_event_interruptible_timeout(priv->scan_q, 1343 (priv->scan_req == NULL), 1344 (15 * HZ)); 1345 1346 creq = _new_connect_scan_req(wiphy, sme); 1347 if (!creq) { 1348 ret = -EINVAL; 1349 goto done; 1350 } 1351 1352 lbs_deb_assoc("assoc: scanning for compatible AP\n"); 1353 _internal_start_scan(priv, true, creq); 1354 1355 lbs_deb_assoc("assoc: waiting for scan to complete\n"); 1356 wait_event_interruptible_timeout(priv->scan_q, 1357 (priv->scan_req == NULL), 1358 (15 * HZ)); 1359 lbs_deb_assoc("assoc: scanning completed\n"); 1360 } 1361 1362 /* Find the BSS we want using available scan results */ 1363 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid, 1364 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS, 1365 IEEE80211_PRIVACY_ANY); 1366 if (!bss) { 1367 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n", 1368 sme->bssid); 1369 ret = -ENOENT; 1370 goto done; 1371 } 1372 lbs_deb_assoc("trying %pM\n", bss->bssid); 1373 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n", 1374 sme->crypto.cipher_group, 1375 sme->key_idx, sme->key_len); 1376 1377 /* As this is a new connection, clear locally stored WEP keys */ 1378 priv->wep_tx_key = 0; 1379 memset(priv->wep_key, 0, sizeof(priv->wep_key)); 1380 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len)); 1381 1382 /* set/remove WEP keys */ 1383 switch (sme->crypto.cipher_group) { 1384 case WLAN_CIPHER_SUITE_WEP40: 1385 case WLAN_CIPHER_SUITE_WEP104: 1386 /* Store provided WEP keys in priv-> */ 1387 priv->wep_tx_key = sme->key_idx; 1388 priv->wep_key_len[sme->key_idx] = sme->key_len; 1389 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len); 1390 /* Set WEP keys and WEP mode */ 1391 lbs_set_wep_keys(priv); 1392 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE; 1393 lbs_set_mac_control(priv); 1394 /* No RSN mode for WEP */ 1395 lbs_enable_rsn(priv, 0); 1396 break; 1397 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */ 1398 /* 1399 * If we don't have no WEP, no WPA and no WPA2, 1400 * we remove all keys like in the WPA/WPA2 setup, 1401 * we just don't set RSN. 1402 * 1403 * Therefore: fall-through 1404 */ 1405 case WLAN_CIPHER_SUITE_TKIP: 1406 case WLAN_CIPHER_SUITE_CCMP: 1407 /* Remove WEP keys and WEP mode */ 1408 lbs_remove_wep_keys(priv); 1409 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE; 1410 lbs_set_mac_control(priv); 1411 1412 /* clear the WPA/WPA2 keys */ 1413 lbs_set_key_material(priv, 1414 KEY_TYPE_ID_WEP, /* doesn't matter */ 1415 KEY_INFO_WPA_UNICAST, 1416 NULL, 0); 1417 lbs_set_key_material(priv, 1418 KEY_TYPE_ID_WEP, /* doesn't matter */ 1419 KEY_INFO_WPA_MCAST, 1420 NULL, 0); 1421 /* RSN mode for WPA/WPA2 */ 1422 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0); 1423 break; 1424 default: 1425 wiphy_err(wiphy, "unsupported cipher group 0x%x\n", 1426 sme->crypto.cipher_group); 1427 ret = -ENOTSUPP; 1428 goto done; 1429 } 1430 1431 ret = lbs_set_authtype(priv, sme); 1432 if (ret == -ENOTSUPP) { 1433 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type); 1434 goto done; 1435 } 1436 1437 lbs_set_radio(priv, preamble, 1); 1438 1439 /* Do the actual association */ 1440 ret = lbs_associate(priv, bss, sme); 1441 1442 done: 1443 if (bss) 1444 cfg80211_put_bss(wiphy, bss); 1445 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1446 return ret; 1447 } 1448 1449 int lbs_disconnect(struct lbs_private *priv, u16 reason) 1450 { 1451 struct cmd_ds_802_11_deauthenticate cmd; 1452 int ret; 1453 1454 memset(&cmd, 0, sizeof(cmd)); 1455 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1456 /* Mildly ugly to use a locally store my own BSSID ... */ 1457 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN); 1458 cmd.reasoncode = cpu_to_le16(reason); 1459 1460 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd); 1461 if (ret) 1462 return ret; 1463 1464 cfg80211_disconnected(priv->dev, 1465 reason, 1466 NULL, 0, true, 1467 GFP_KERNEL); 1468 priv->connect_status = LBS_DISCONNECTED; 1469 1470 return 0; 1471 } 1472 1473 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev, 1474 u16 reason_code) 1475 { 1476 struct lbs_private *priv = wiphy_priv(wiphy); 1477 1478 if (dev == priv->mesh_dev) 1479 return -EOPNOTSUPP; 1480 1481 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code); 1482 1483 /* store for lbs_cfg_ret_disconnect() */ 1484 priv->disassoc_reason = reason_code; 1485 1486 return lbs_disconnect(priv, reason_code); 1487 } 1488 1489 static int lbs_cfg_set_default_key(struct wiphy *wiphy, 1490 struct net_device *netdev, 1491 u8 key_index, bool unicast, 1492 bool multicast) 1493 { 1494 struct lbs_private *priv = wiphy_priv(wiphy); 1495 1496 if (netdev == priv->mesh_dev) 1497 return -EOPNOTSUPP; 1498 1499 lbs_deb_enter(LBS_DEB_CFG80211); 1500 1501 if (key_index != priv->wep_tx_key) { 1502 lbs_deb_assoc("set_default_key: to %d\n", key_index); 1503 priv->wep_tx_key = key_index; 1504 lbs_set_wep_keys(priv); 1505 } 1506 1507 return 0; 1508 } 1509 1510 1511 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev, 1512 u8 idx, bool pairwise, const u8 *mac_addr, 1513 struct key_params *params) 1514 { 1515 struct lbs_private *priv = wiphy_priv(wiphy); 1516 u16 key_info; 1517 u16 key_type; 1518 int ret = 0; 1519 1520 if (netdev == priv->mesh_dev) 1521 return -EOPNOTSUPP; 1522 1523 lbs_deb_enter(LBS_DEB_CFG80211); 1524 1525 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n", 1526 params->cipher, mac_addr); 1527 lbs_deb_assoc("add_key: key index %d, key len %d\n", 1528 idx, params->key_len); 1529 if (params->key_len) 1530 lbs_deb_hex(LBS_DEB_CFG80211, "KEY", 1531 params->key, params->key_len); 1532 1533 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len); 1534 if (params->seq_len) 1535 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ", 1536 params->seq, params->seq_len); 1537 1538 switch (params->cipher) { 1539 case WLAN_CIPHER_SUITE_WEP40: 1540 case WLAN_CIPHER_SUITE_WEP104: 1541 /* actually compare if something has changed ... */ 1542 if ((priv->wep_key_len[idx] != params->key_len) || 1543 memcmp(priv->wep_key[idx], 1544 params->key, params->key_len) != 0) { 1545 priv->wep_key_len[idx] = params->key_len; 1546 memcpy(priv->wep_key[idx], 1547 params->key, params->key_len); 1548 lbs_set_wep_keys(priv); 1549 } 1550 break; 1551 case WLAN_CIPHER_SUITE_TKIP: 1552 case WLAN_CIPHER_SUITE_CCMP: 1553 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0) 1554 ? KEY_INFO_WPA_UNICAST 1555 : KEY_INFO_WPA_MCAST); 1556 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP) 1557 ? KEY_TYPE_ID_TKIP 1558 : KEY_TYPE_ID_AES; 1559 lbs_set_key_material(priv, 1560 key_type, 1561 key_info, 1562 params->key, params->key_len); 1563 break; 1564 default: 1565 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher); 1566 ret = -ENOTSUPP; 1567 break; 1568 } 1569 1570 return ret; 1571 } 1572 1573 1574 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev, 1575 u8 key_index, bool pairwise, const u8 *mac_addr) 1576 { 1577 1578 lbs_deb_enter(LBS_DEB_CFG80211); 1579 1580 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n", 1581 key_index, mac_addr); 1582 1583 #ifdef TODO 1584 struct lbs_private *priv = wiphy_priv(wiphy); 1585 /* 1586 * I think can keep this a NO-OP, because: 1587 1588 * - we clear all keys whenever we do lbs_cfg_connect() anyway 1589 * - neither "iw" nor "wpa_supplicant" won't call this during 1590 * an ongoing connection 1591 * - TODO: but I have to check if this is still true when 1592 * I set the AP to periodic re-keying 1593 * - we've not kzallec() something when we've added a key at 1594 * lbs_cfg_connect() or lbs_cfg_add_key(). 1595 * 1596 * This causes lbs_cfg_del_key() only called at disconnect time, 1597 * where we'd just waste time deleting a key that is not going 1598 * to be used anyway. 1599 */ 1600 if (key_index < 3 && priv->wep_key_len[key_index]) { 1601 priv->wep_key_len[key_index] = 0; 1602 lbs_set_wep_keys(priv); 1603 } 1604 #endif 1605 1606 return 0; 1607 } 1608 1609 1610 /* 1611 * Get station 1612 */ 1613 1614 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev, 1615 const u8 *mac, struct station_info *sinfo) 1616 { 1617 struct lbs_private *priv = wiphy_priv(wiphy); 1618 s8 signal, noise; 1619 int ret; 1620 size_t i; 1621 1622 lbs_deb_enter(LBS_DEB_CFG80211); 1623 1624 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) | 1625 BIT(NL80211_STA_INFO_TX_PACKETS) | 1626 BIT(NL80211_STA_INFO_RX_BYTES) | 1627 BIT(NL80211_STA_INFO_RX_PACKETS); 1628 sinfo->tx_bytes = priv->dev->stats.tx_bytes; 1629 sinfo->tx_packets = priv->dev->stats.tx_packets; 1630 sinfo->rx_bytes = priv->dev->stats.rx_bytes; 1631 sinfo->rx_packets = priv->dev->stats.rx_packets; 1632 1633 /* Get current RSSI */ 1634 ret = lbs_get_rssi(priv, &signal, &noise); 1635 if (ret == 0) { 1636 sinfo->signal = signal; 1637 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); 1638 } 1639 1640 /* Convert priv->cur_rate from hw_value to NL80211 value */ 1641 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) { 1642 if (priv->cur_rate == lbs_rates[i].hw_value) { 1643 sinfo->txrate.legacy = lbs_rates[i].bitrate; 1644 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); 1645 break; 1646 } 1647 } 1648 1649 return 0; 1650 } 1651 1652 1653 1654 1655 /* 1656 * Change interface 1657 */ 1658 1659 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev, 1660 enum nl80211_iftype type, u32 *flags, 1661 struct vif_params *params) 1662 { 1663 struct lbs_private *priv = wiphy_priv(wiphy); 1664 int ret = 0; 1665 1666 if (dev == priv->mesh_dev) 1667 return -EOPNOTSUPP; 1668 1669 switch (type) { 1670 case NL80211_IFTYPE_MONITOR: 1671 case NL80211_IFTYPE_STATION: 1672 case NL80211_IFTYPE_ADHOC: 1673 break; 1674 default: 1675 return -EOPNOTSUPP; 1676 } 1677 1678 lbs_deb_enter(LBS_DEB_CFG80211); 1679 1680 if (priv->iface_running) 1681 ret = lbs_set_iface_type(priv, type); 1682 1683 if (!ret) 1684 priv->wdev->iftype = type; 1685 1686 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1687 return ret; 1688 } 1689 1690 1691 1692 /* 1693 * IBSS (Ad-Hoc) 1694 */ 1695 1696 /* 1697 * The firmware needs the following bits masked out of the beacon-derived 1698 * capability field when associating/joining to a BSS: 1699 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused) 1700 */ 1701 #define CAPINFO_MASK (~(0xda00)) 1702 1703 1704 static void lbs_join_post(struct lbs_private *priv, 1705 struct cfg80211_ibss_params *params, 1706 u8 *bssid, u16 capability) 1707 { 1708 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */ 1709 2 + 4 + /* basic rates */ 1710 2 + 1 + /* DS parameter */ 1711 2 + 2 + /* atim */ 1712 2 + 8]; /* extended rates */ 1713 u8 *fake = fake_ie; 1714 struct cfg80211_bss *bss; 1715 1716 lbs_deb_enter(LBS_DEB_CFG80211); 1717 1718 /* 1719 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get 1720 * the real IE from the firmware. So we fabricate a fake IE based on 1721 * what the firmware actually sends (sniffed with wireshark). 1722 */ 1723 /* Fake SSID IE */ 1724 *fake++ = WLAN_EID_SSID; 1725 *fake++ = params->ssid_len; 1726 memcpy(fake, params->ssid, params->ssid_len); 1727 fake += params->ssid_len; 1728 /* Fake supported basic rates IE */ 1729 *fake++ = WLAN_EID_SUPP_RATES; 1730 *fake++ = 4; 1731 *fake++ = 0x82; 1732 *fake++ = 0x84; 1733 *fake++ = 0x8b; 1734 *fake++ = 0x96; 1735 /* Fake DS channel IE */ 1736 *fake++ = WLAN_EID_DS_PARAMS; 1737 *fake++ = 1; 1738 *fake++ = params->chandef.chan->hw_value; 1739 /* Fake IBSS params IE */ 1740 *fake++ = WLAN_EID_IBSS_PARAMS; 1741 *fake++ = 2; 1742 *fake++ = 0; /* ATIM=0 */ 1743 *fake++ = 0; 1744 /* Fake extended rates IE, TODO: don't add this for 802.11b only, 1745 * but I don't know how this could be checked */ 1746 *fake++ = WLAN_EID_EXT_SUPP_RATES; 1747 *fake++ = 8; 1748 *fake++ = 0x0c; 1749 *fake++ = 0x12; 1750 *fake++ = 0x18; 1751 *fake++ = 0x24; 1752 *fake++ = 0x30; 1753 *fake++ = 0x48; 1754 *fake++ = 0x60; 1755 *fake++ = 0x6c; 1756 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie); 1757 1758 bss = cfg80211_inform_bss(priv->wdev->wiphy, 1759 params->chandef.chan, 1760 CFG80211_BSS_FTYPE_UNKNOWN, 1761 bssid, 1762 0, 1763 capability, 1764 params->beacon_interval, 1765 fake_ie, fake - fake_ie, 1766 0, GFP_KERNEL); 1767 cfg80211_put_bss(priv->wdev->wiphy, bss); 1768 1769 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len); 1770 priv->wdev->ssid_len = params->ssid_len; 1771 1772 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan, 1773 GFP_KERNEL); 1774 1775 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */ 1776 priv->connect_status = LBS_CONNECTED; 1777 netif_carrier_on(priv->dev); 1778 if (!priv->tx_pending_len) 1779 netif_wake_queue(priv->dev); 1780 1781 lbs_deb_leave(LBS_DEB_CFG80211); 1782 } 1783 1784 static int lbs_ibss_join_existing(struct lbs_private *priv, 1785 struct cfg80211_ibss_params *params, 1786 struct cfg80211_bss *bss) 1787 { 1788 const u8 *rates_eid; 1789 struct cmd_ds_802_11_ad_hoc_join cmd; 1790 u8 preamble = RADIO_PREAMBLE_SHORT; 1791 int ret = 0; 1792 1793 lbs_deb_enter(LBS_DEB_CFG80211); 1794 1795 /* TODO: set preamble based on scan result */ 1796 ret = lbs_set_radio(priv, preamble, 1); 1797 if (ret) 1798 goto out; 1799 1800 /* 1801 * Example CMD_802_11_AD_HOC_JOIN command: 1802 * 1803 * command 2c 00 CMD_802_11_AD_HOC_JOIN 1804 * size 65 00 1805 * sequence xx xx 1806 * result 00 00 1807 * bssid 02 27 27 97 2f 96 1808 * ssid 49 42 53 53 00 00 00 00 1809 * 00 00 00 00 00 00 00 00 1810 * 00 00 00 00 00 00 00 00 1811 * 00 00 00 00 00 00 00 00 1812 * type 02 CMD_BSS_TYPE_IBSS 1813 * beacon period 64 00 1814 * dtim period 00 1815 * timestamp 00 00 00 00 00 00 00 00 1816 * localtime 00 00 00 00 00 00 00 00 1817 * IE DS 03 1818 * IE DS len 01 1819 * IE DS channel 01 1820 * reserveed 00 00 00 00 1821 * IE IBSS 06 1822 * IE IBSS len 02 1823 * IE IBSS atim 00 00 1824 * reserved 00 00 00 00 1825 * capability 02 00 1826 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00 1827 * fail timeout ff 00 1828 * probe delay 00 00 1829 */ 1830 memset(&cmd, 0, sizeof(cmd)); 1831 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1832 1833 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN); 1834 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len); 1835 cmd.bss.type = CMD_BSS_TYPE_IBSS; 1836 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval); 1837 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS; 1838 cmd.bss.ds.header.len = 1; 1839 cmd.bss.ds.channel = params->chandef.chan->hw_value; 1840 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS; 1841 cmd.bss.ibss.header.len = 2; 1842 cmd.bss.ibss.atimwindow = 0; 1843 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK); 1844 1845 /* set rates to the intersection of our rates and the rates in the 1846 bss */ 1847 rcu_read_lock(); 1848 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES); 1849 if (!rates_eid) { 1850 lbs_add_rates(cmd.bss.rates); 1851 } else { 1852 int hw, i; 1853 u8 rates_max = rates_eid[1]; 1854 u8 *rates = cmd.bss.rates; 1855 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) { 1856 u8 hw_rate = lbs_rates[hw].bitrate / 5; 1857 for (i = 0; i < rates_max; i++) { 1858 if (hw_rate == (rates_eid[i+2] & 0x7f)) { 1859 u8 rate = rates_eid[i+2]; 1860 if (rate == 0x02 || rate == 0x04 || 1861 rate == 0x0b || rate == 0x16) 1862 rate |= 0x80; 1863 *rates++ = rate; 1864 } 1865 } 1866 } 1867 } 1868 rcu_read_unlock(); 1869 1870 /* Only v8 and below support setting this */ 1871 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) { 1872 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT); 1873 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME); 1874 } 1875 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd); 1876 if (ret) 1877 goto out; 1878 1879 /* 1880 * This is a sample response to CMD_802_11_AD_HOC_JOIN: 1881 * 1882 * response 2c 80 1883 * size 09 00 1884 * sequence xx xx 1885 * result 00 00 1886 * reserved 00 1887 */ 1888 lbs_join_post(priv, params, bss->bssid, bss->capability); 1889 1890 out: 1891 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1892 return ret; 1893 } 1894 1895 1896 1897 static int lbs_ibss_start_new(struct lbs_private *priv, 1898 struct cfg80211_ibss_params *params) 1899 { 1900 struct cmd_ds_802_11_ad_hoc_start cmd; 1901 struct cmd_ds_802_11_ad_hoc_result *resp = 1902 (struct cmd_ds_802_11_ad_hoc_result *) &cmd; 1903 u8 preamble = RADIO_PREAMBLE_SHORT; 1904 int ret = 0; 1905 u16 capability; 1906 1907 lbs_deb_enter(LBS_DEB_CFG80211); 1908 1909 ret = lbs_set_radio(priv, preamble, 1); 1910 if (ret) 1911 goto out; 1912 1913 /* 1914 * Example CMD_802_11_AD_HOC_START command: 1915 * 1916 * command 2b 00 CMD_802_11_AD_HOC_START 1917 * size b1 00 1918 * sequence xx xx 1919 * result 00 00 1920 * ssid 54 45 53 54 00 00 00 00 1921 * 00 00 00 00 00 00 00 00 1922 * 00 00 00 00 00 00 00 00 1923 * 00 00 00 00 00 00 00 00 1924 * bss type 02 1925 * beacon period 64 00 1926 * dtim period 00 1927 * IE IBSS 06 1928 * IE IBSS len 02 1929 * IE IBSS atim 00 00 1930 * reserved 00 00 00 00 1931 * IE DS 03 1932 * IE DS len 01 1933 * IE DS channel 01 1934 * reserved 00 00 00 00 1935 * probe delay 00 00 1936 * capability 02 00 1937 * rates 82 84 8b 96 (basic rates with have bit 7 set) 1938 * 0c 12 18 24 30 48 60 6c 1939 * padding 100 bytes 1940 */ 1941 memset(&cmd, 0, sizeof(cmd)); 1942 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 1943 memcpy(cmd.ssid, params->ssid, params->ssid_len); 1944 cmd.bsstype = CMD_BSS_TYPE_IBSS; 1945 cmd.beaconperiod = cpu_to_le16(params->beacon_interval); 1946 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS; 1947 cmd.ibss.header.len = 2; 1948 cmd.ibss.atimwindow = 0; 1949 cmd.ds.header.id = WLAN_EID_DS_PARAMS; 1950 cmd.ds.header.len = 1; 1951 cmd.ds.channel = params->chandef.chan->hw_value; 1952 /* Only v8 and below support setting probe delay */ 1953 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) 1954 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME); 1955 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */ 1956 capability = WLAN_CAPABILITY_IBSS; 1957 cmd.capability = cpu_to_le16(capability); 1958 lbs_add_rates(cmd.rates); 1959 1960 1961 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd); 1962 if (ret) 1963 goto out; 1964 1965 /* 1966 * This is a sample response to CMD_802_11_AD_HOC_JOIN: 1967 * 1968 * response 2b 80 1969 * size 14 00 1970 * sequence xx xx 1971 * result 00 00 1972 * reserved 00 1973 * bssid 02 2b 7b 0f 86 0e 1974 */ 1975 lbs_join_post(priv, params, resp->bssid, capability); 1976 1977 out: 1978 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 1979 return ret; 1980 } 1981 1982 1983 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1984 struct cfg80211_ibss_params *params) 1985 { 1986 struct lbs_private *priv = wiphy_priv(wiphy); 1987 int ret = 0; 1988 struct cfg80211_bss *bss; 1989 1990 if (dev == priv->mesh_dev) 1991 return -EOPNOTSUPP; 1992 1993 lbs_deb_enter(LBS_DEB_CFG80211); 1994 1995 if (!params->chandef.chan) { 1996 ret = -ENOTSUPP; 1997 goto out; 1998 } 1999 2000 ret = lbs_set_channel(priv, params->chandef.chan->hw_value); 2001 if (ret) 2002 goto out; 2003 2004 /* Search if someone is beaconing. This assumes that the 2005 * bss list is populated already */ 2006 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid, 2007 params->ssid, params->ssid_len, 2008 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY); 2009 2010 if (bss) { 2011 ret = lbs_ibss_join_existing(priv, params, bss); 2012 cfg80211_put_bss(wiphy, bss); 2013 } else 2014 ret = lbs_ibss_start_new(priv, params); 2015 2016 2017 out: 2018 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2019 return ret; 2020 } 2021 2022 2023 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2024 { 2025 struct lbs_private *priv = wiphy_priv(wiphy); 2026 struct cmd_ds_802_11_ad_hoc_stop cmd; 2027 int ret = 0; 2028 2029 if (dev == priv->mesh_dev) 2030 return -EOPNOTSUPP; 2031 2032 lbs_deb_enter(LBS_DEB_CFG80211); 2033 2034 memset(&cmd, 0, sizeof(cmd)); 2035 cmd.hdr.size = cpu_to_le16(sizeof(cmd)); 2036 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd); 2037 2038 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */ 2039 lbs_mac_event_disconnected(priv, true); 2040 2041 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2042 return ret; 2043 } 2044 2045 2046 2047 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2048 bool enabled, int timeout) 2049 { 2050 struct lbs_private *priv = wiphy_priv(wiphy); 2051 2052 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) { 2053 if (!enabled) 2054 return 0; 2055 else 2056 return -EINVAL; 2057 } 2058 /* firmware does not work well with too long latency with power saving 2059 * enabled, so do not enable it if there is only polling, no 2060 * interrupts (like in some sdio hosts which can only 2061 * poll for sdio irqs) 2062 */ 2063 if (priv->is_polling) { 2064 if (!enabled) 2065 return 0; 2066 else 2067 return -EINVAL; 2068 } 2069 if (!enabled) { 2070 priv->psmode = LBS802_11POWERMODECAM; 2071 if (priv->psstate != PS_STATE_FULL_POWER) 2072 lbs_set_ps_mode(priv, 2073 PS_MODE_ACTION_EXIT_PS, 2074 true); 2075 return 0; 2076 } 2077 if (priv->psmode != LBS802_11POWERMODECAM) 2078 return 0; 2079 priv->psmode = LBS802_11POWERMODEMAX_PSP; 2080 if (priv->connect_status == LBS_CONNECTED) 2081 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true); 2082 return 0; 2083 } 2084 2085 /* 2086 * Initialization 2087 */ 2088 2089 static struct cfg80211_ops lbs_cfg80211_ops = { 2090 .set_monitor_channel = lbs_cfg_set_monitor_channel, 2091 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel, 2092 .scan = lbs_cfg_scan, 2093 .connect = lbs_cfg_connect, 2094 .disconnect = lbs_cfg_disconnect, 2095 .add_key = lbs_cfg_add_key, 2096 .del_key = lbs_cfg_del_key, 2097 .set_default_key = lbs_cfg_set_default_key, 2098 .get_station = lbs_cfg_get_station, 2099 .change_virtual_intf = lbs_change_intf, 2100 .join_ibss = lbs_join_ibss, 2101 .leave_ibss = lbs_leave_ibss, 2102 .set_power_mgmt = lbs_set_power_mgmt, 2103 }; 2104 2105 2106 /* 2107 * At this time lbs_private *priv doesn't even exist, so we just allocate 2108 * memory and don't initialize the wiphy further. This is postponed until we 2109 * can talk to the firmware and happens at registration time in 2110 * lbs_cfg_wiphy_register(). 2111 */ 2112 struct wireless_dev *lbs_cfg_alloc(struct device *dev) 2113 { 2114 int ret = 0; 2115 struct wireless_dev *wdev; 2116 2117 lbs_deb_enter(LBS_DEB_CFG80211); 2118 2119 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); 2120 if (!wdev) 2121 return ERR_PTR(-ENOMEM); 2122 2123 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private)); 2124 if (!wdev->wiphy) { 2125 dev_err(dev, "cannot allocate wiphy\n"); 2126 ret = -ENOMEM; 2127 goto err_wiphy_new; 2128 } 2129 2130 lbs_deb_leave(LBS_DEB_CFG80211); 2131 return wdev; 2132 2133 err_wiphy_new: 2134 kfree(wdev); 2135 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2136 return ERR_PTR(ret); 2137 } 2138 2139 2140 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv) 2141 { 2142 struct region_code_mapping { 2143 const char *cn; 2144 int code; 2145 }; 2146 2147 /* Section 5.17.2 */ 2148 static const struct region_code_mapping regmap[] = { 2149 {"US ", 0x10}, /* US FCC */ 2150 {"CA ", 0x20}, /* Canada */ 2151 {"EU ", 0x30}, /* ETSI */ 2152 {"ES ", 0x31}, /* Spain */ 2153 {"FR ", 0x32}, /* France */ 2154 {"JP ", 0x40}, /* Japan */ 2155 }; 2156 size_t i; 2157 2158 lbs_deb_enter(LBS_DEB_CFG80211); 2159 2160 for (i = 0; i < ARRAY_SIZE(regmap); i++) 2161 if (regmap[i].code == priv->regioncode) { 2162 regulatory_hint(priv->wdev->wiphy, regmap[i].cn); 2163 break; 2164 } 2165 2166 lbs_deb_leave(LBS_DEB_CFG80211); 2167 } 2168 2169 static void lbs_reg_notifier(struct wiphy *wiphy, 2170 struct regulatory_request *request) 2171 { 2172 struct lbs_private *priv = wiphy_priv(wiphy); 2173 2174 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain " 2175 "callback for domain %c%c\n", request->alpha2[0], 2176 request->alpha2[1]); 2177 2178 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2)); 2179 if (lbs_iface_active(priv)) 2180 lbs_set_11d_domain_info(priv); 2181 2182 lbs_deb_leave(LBS_DEB_CFG80211); 2183 } 2184 2185 /* 2186 * This function get's called after lbs_setup_firmware() determined the 2187 * firmware capabities. So we can setup the wiphy according to our 2188 * hardware/firmware. 2189 */ 2190 int lbs_cfg_register(struct lbs_private *priv) 2191 { 2192 struct wireless_dev *wdev = priv->wdev; 2193 int ret; 2194 2195 lbs_deb_enter(LBS_DEB_CFG80211); 2196 2197 wdev->wiphy->max_scan_ssids = 1; 2198 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 2199 2200 wdev->wiphy->interface_modes = 2201 BIT(NL80211_IFTYPE_STATION) | 2202 BIT(NL80211_IFTYPE_ADHOC); 2203 if (lbs_rtap_supported(priv)) 2204 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); 2205 if (lbs_mesh_activated(priv)) 2206 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT); 2207 2208 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz; 2209 2210 /* 2211 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have 2212 * never seen a firmware without WPA 2213 */ 2214 wdev->wiphy->cipher_suites = cipher_suites; 2215 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 2216 wdev->wiphy->reg_notifier = lbs_reg_notifier; 2217 2218 ret = wiphy_register(wdev->wiphy); 2219 if (ret < 0) 2220 pr_err("cannot register wiphy device\n"); 2221 2222 priv->wiphy_registered = true; 2223 2224 ret = register_netdev(priv->dev); 2225 if (ret) 2226 pr_err("cannot register network device\n"); 2227 2228 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker); 2229 2230 lbs_cfg_set_regulatory_hint(priv); 2231 2232 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); 2233 return ret; 2234 } 2235 2236 void lbs_scan_deinit(struct lbs_private *priv) 2237 { 2238 lbs_deb_enter(LBS_DEB_CFG80211); 2239 cancel_delayed_work_sync(&priv->scan_work); 2240 } 2241 2242 2243 void lbs_cfg_free(struct lbs_private *priv) 2244 { 2245 struct wireless_dev *wdev = priv->wdev; 2246 2247 lbs_deb_enter(LBS_DEB_CFG80211); 2248 2249 if (!wdev) 2250 return; 2251 2252 if (priv->wiphy_registered) 2253 wiphy_unregister(wdev->wiphy); 2254 2255 if (wdev->wiphy) 2256 wiphy_free(wdev->wiphy); 2257 2258 kfree(wdev); 2259 } 2260