main.c revision 11f6e40d9f21767a9090e4e559d3c63edf25e6c0
1/* 2 * Copyright (c) 2004-2011 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17#include "core.h" 18#include "hif-ops.h" 19#include "cfg80211.h" 20#include "target.h" 21#include "debug.h" 22 23struct ath6kl_sta *ath6kl_find_sta(struct ath6kl_vif *vif, u8 *node_addr) 24{ 25 struct ath6kl *ar = vif->ar; 26 struct ath6kl_sta *conn = NULL; 27 u8 i, max_conn; 28 29 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; 30 31 for (i = 0; i < max_conn; i++) { 32 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { 33 conn = &ar->sta_list[i]; 34 break; 35 } 36 } 37 38 return conn; 39} 40 41struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) 42{ 43 struct ath6kl_sta *conn = NULL; 44 u8 ctr; 45 46 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { 47 if (ar->sta_list[ctr].aid == aid) { 48 conn = &ar->sta_list[ctr]; 49 break; 50 } 51 } 52 return conn; 53} 54 55static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie, 56 u8 ielen, u8 keymgmt, u8 ucipher, u8 auth) 57{ 58 struct ath6kl_sta *sta; 59 u8 free_slot; 60 61 free_slot = aid - 1; 62 63 sta = &ar->sta_list[free_slot]; 64 memcpy(sta->mac, mac, ETH_ALEN); 65 if (ielen <= ATH6KL_MAX_IE) 66 memcpy(sta->wpa_ie, wpaie, ielen); 67 sta->aid = aid; 68 sta->keymgmt = keymgmt; 69 sta->ucipher = ucipher; 70 sta->auth = auth; 71 72 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 73 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 74} 75 76static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 77{ 78 struct ath6kl_sta *sta = &ar->sta_list[i]; 79 80 /* empty the queued pkts in the PS queue if any */ 81 spin_lock_bh(&sta->psq_lock); 82 skb_queue_purge(&sta->psq); 83 spin_unlock_bh(&sta->psq_lock); 84 85 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 86 sizeof(struct wmi_per_sta_stat)); 87 memset(sta->mac, 0, ETH_ALEN); 88 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 89 sta->aid = 0; 90 sta->sta_flags = 0; 91 92 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 93 94} 95 96static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 97{ 98 u8 i, removed = 0; 99 100 if (is_zero_ether_addr(mac)) 101 return removed; 102 103 if (is_broadcast_ether_addr(mac)) { 104 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 105 106 for (i = 0; i < AP_MAX_NUM_STA; i++) { 107 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 108 ath6kl_sta_cleanup(ar, i); 109 removed = 1; 110 } 111 } 112 } else { 113 for (i = 0; i < AP_MAX_NUM_STA; i++) { 114 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 115 ath6kl_dbg(ATH6KL_DBG_TRC, 116 "deleting station %pM aid=%d reason=%d\n", 117 mac, ar->sta_list[i].aid, reason); 118 ath6kl_sta_cleanup(ar, i); 119 removed = 1; 120 break; 121 } 122 } 123 } 124 125 return removed; 126} 127 128enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 129{ 130 struct ath6kl *ar = devt; 131 return ar->ac2ep_map[ac]; 132} 133 134struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 135{ 136 struct ath6kl_cookie *cookie; 137 138 cookie = ar->cookie_list; 139 if (cookie != NULL) { 140 ar->cookie_list = cookie->arc_list_next; 141 ar->cookie_count--; 142 } 143 144 return cookie; 145} 146 147void ath6kl_cookie_init(struct ath6kl *ar) 148{ 149 u32 i; 150 151 ar->cookie_list = NULL; 152 ar->cookie_count = 0; 153 154 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 155 156 for (i = 0; i < MAX_COOKIE_NUM; i++) 157 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 158} 159 160void ath6kl_cookie_cleanup(struct ath6kl *ar) 161{ 162 ar->cookie_list = NULL; 163 ar->cookie_count = 0; 164} 165 166void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 167{ 168 /* Insert first */ 169 170 if (!ar || !cookie) 171 return; 172 173 cookie->arc_list_next = ar->cookie_list; 174 ar->cookie_list = cookie; 175 ar->cookie_count++; 176} 177 178/* set the window address register (using 4-byte register access ). */ 179static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr) 180{ 181 int status; 182 s32 i; 183 __le32 addr_val; 184 185 /* 186 * Write bytes 1,2,3 of the register to set the upper address bytes, 187 * the LSB is written last to initiate the access cycle 188 */ 189 190 for (i = 1; i <= 3; i++) { 191 /* 192 * Fill the buffer with the address byte value we want to 193 * hit 4 times. No need to worry about endianness as the 194 * same byte is copied to all four bytes of addr_val at 195 * any time. 196 */ 197 memset((u8 *)&addr_val, ((u8 *)&addr)[i], 4); 198 199 /* 200 * Hit each byte of the register address with a 4-byte 201 * write operation to the same address, this is a harmless 202 * operation. 203 */ 204 status = hif_read_write_sync(ar, reg_addr + i, (u8 *)&addr_val, 205 4, HIF_WR_SYNC_BYTE_FIX); 206 if (status) 207 break; 208 } 209 210 if (status) { 211 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n", 212 addr, reg_addr); 213 return status; 214 } 215 216 /* 217 * Write the address register again, this time write the whole 218 * 4-byte value. The effect here is that the LSB write causes the 219 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no 220 * effect since we are writing the same values again 221 */ 222 addr_val = cpu_to_le32(addr); 223 status = hif_read_write_sync(ar, reg_addr, 224 (u8 *)&(addr_val), 225 4, HIF_WR_SYNC_BYTE_INC); 226 227 if (status) { 228 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n", 229 addr, reg_addr); 230 return status; 231 } 232 233 return 0; 234} 235 236/* 237 * Read from the hardware through its diagnostic window. No cooperation 238 * from the firmware is required for this. 239 */ 240int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 241{ 242 int ret; 243 244 /* set window register to start read cycle */ 245 ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address); 246 if (ret) 247 return ret; 248 249 /* read the data */ 250 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value, 251 sizeof(*value), HIF_RD_SYNC_BYTE_INC); 252 if (ret) { 253 ath6kl_warn("failed to read32 through diagnose window: %d\n", 254 ret); 255 return ret; 256 } 257 258 return 0; 259} 260 261/* 262 * Write to the ATH6KL through its diagnostic window. No cooperation from 263 * the Target is required for this. 264 */ 265int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 266{ 267 int ret; 268 269 /* set write data */ 270 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value, 271 sizeof(value), HIF_WR_SYNC_BYTE_INC); 272 if (ret) { 273 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 274 address, value); 275 return ret; 276 } 277 278 /* set window register, which starts the write cycle */ 279 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS, 280 address); 281} 282 283int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 284{ 285 u32 count, *buf = data; 286 int ret; 287 288 if (WARN_ON(length % 4)) 289 return -EINVAL; 290 291 for (count = 0; count < length / 4; count++, address += 4) { 292 ret = ath6kl_diag_read32(ar, address, &buf[count]); 293 if (ret) 294 return ret; 295 } 296 297 return 0; 298} 299 300int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 301{ 302 u32 count; 303 __le32 *buf = data; 304 int ret; 305 306 if (WARN_ON(length % 4)) 307 return -EINVAL; 308 309 for (count = 0; count < length / 4; count++, address += 4) { 310 ret = ath6kl_diag_write32(ar, address, buf[count]); 311 if (ret) 312 return ret; 313 } 314 315 return 0; 316} 317 318int ath6kl_read_fwlogs(struct ath6kl *ar) 319{ 320 struct ath6kl_dbglog_hdr debug_hdr; 321 struct ath6kl_dbglog_buf debug_buf; 322 u32 address, length, dropped, firstbuf, debug_hdr_addr; 323 int ret = 0, loop; 324 u8 *buf; 325 326 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 327 if (!buf) 328 return -ENOMEM; 329 330 address = TARG_VTOP(ar->target_type, 331 ath6kl_get_hi_item_addr(ar, 332 HI_ITEM(hi_dbglog_hdr))); 333 334 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 335 if (ret) 336 goto out; 337 338 /* Get the contents of the ring buffer */ 339 if (debug_hdr_addr == 0) { 340 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 341 ret = -EINVAL; 342 goto out; 343 } 344 345 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 346 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 347 348 address = TARG_VTOP(ar->target_type, 349 le32_to_cpu(debug_hdr.dbuf_addr)); 350 firstbuf = address; 351 dropped = le32_to_cpu(debug_hdr.dropped); 352 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 353 354 loop = 100; 355 356 do { 357 address = TARG_VTOP(ar->target_type, 358 le32_to_cpu(debug_buf.buffer_addr)); 359 length = le32_to_cpu(debug_buf.length); 360 361 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 362 le32_to_cpu(debug_buf.bufsize))) { 363 length = ALIGN(length, 4); 364 365 ret = ath6kl_diag_read(ar, address, 366 buf, length); 367 if (ret) 368 goto out; 369 370 ath6kl_debug_fwlog_event(ar, buf, length); 371 } 372 373 address = TARG_VTOP(ar->target_type, 374 le32_to_cpu(debug_buf.next)); 375 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 376 if (ret) 377 goto out; 378 379 loop--; 380 381 if (WARN_ON(loop == 0)) { 382 ret = -ETIMEDOUT; 383 goto out; 384 } 385 } while (address != firstbuf); 386 387out: 388 kfree(buf); 389 390 return ret; 391} 392 393/* FIXME: move to a better place, target.h? */ 394#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 395#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 396 397void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 398 bool wait_fot_compltn, bool cold_reset) 399{ 400 int status = 0; 401 u32 address; 402 __le32 data; 403 404 if (target_type != TARGET_TYPE_AR6003 && 405 target_type != TARGET_TYPE_AR6004) 406 return; 407 408 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 409 cpu_to_le32(RESET_CONTROL_MBOX_RST); 410 411 switch (target_type) { 412 case TARGET_TYPE_AR6003: 413 address = AR6003_RESET_CONTROL_ADDRESS; 414 break; 415 case TARGET_TYPE_AR6004: 416 address = AR6004_RESET_CONTROL_ADDRESS; 417 break; 418 default: 419 address = AR6003_RESET_CONTROL_ADDRESS; 420 break; 421 } 422 423 status = ath6kl_diag_write32(ar, address, data); 424 425 if (status) 426 ath6kl_err("failed to reset target\n"); 427} 428 429static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 430{ 431 u8 index; 432 u8 keyusage; 433 434 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 435 if (vif->wep_key_list[index].key_len) { 436 keyusage = GROUP_USAGE; 437 if (index == vif->def_txkey_index) 438 keyusage |= TX_USAGE; 439 440 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 441 index, 442 WEP_CRYPT, 443 keyusage, 444 vif->wep_key_list[index].key_len, 445 NULL, 446 vif->wep_key_list[index].key, 447 KEY_OP_INIT_VAL, NULL, 448 NO_SYNC_WMIFLAG); 449 } 450 } 451} 452 453void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 454{ 455 struct ath6kl *ar = vif->ar; 456 struct ath6kl_req_key *ik; 457 int res; 458 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 459 460 ik = &ar->ap_mode_bkey; 461 462 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 463 464 switch (vif->auth_mode) { 465 case NONE_AUTH: 466 if (vif->prwise_crypto == WEP_CRYPT) 467 ath6kl_install_static_wep_keys(vif); 468 break; 469 case WPA_PSK_AUTH: 470 case WPA2_PSK_AUTH: 471 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 472 if (!ik->valid) 473 break; 474 475 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 476 "the initial group key for AP mode\n"); 477 memset(key_rsc, 0, sizeof(key_rsc)); 478 res = ath6kl_wmi_addkey_cmd( 479 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 480 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 481 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 482 if (res) { 483 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 484 "addkey failed: %d\n", res); 485 } 486 break; 487 } 488 489 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 490 set_bit(CONNECTED, &vif->flags); 491 netif_carrier_on(vif->ndev); 492} 493 494void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 495 u8 keymgmt, u8 ucipher, u8 auth, 496 u8 assoc_req_len, u8 *assoc_info) 497{ 498 struct ath6kl *ar = vif->ar; 499 u8 *ies = NULL, *wpa_ie = NULL, *pos; 500 size_t ies_len = 0; 501 struct station_info sinfo; 502 503 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 504 505 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 506 struct ieee80211_mgmt *mgmt = 507 (struct ieee80211_mgmt *) assoc_info; 508 if (ieee80211_is_assoc_req(mgmt->frame_control) && 509 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 510 sizeof(mgmt->u.assoc_req)) { 511 ies = mgmt->u.assoc_req.variable; 512 ies_len = assoc_info + assoc_req_len - ies; 513 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 514 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 515 + sizeof(mgmt->u.reassoc_req)) { 516 ies = mgmt->u.reassoc_req.variable; 517 ies_len = assoc_info + assoc_req_len - ies; 518 } 519 } 520 521 pos = ies; 522 while (pos && pos + 1 < ies + ies_len) { 523 if (pos + 2 + pos[1] > ies + ies_len) 524 break; 525 if (pos[0] == WLAN_EID_RSN) 526 wpa_ie = pos; /* RSN IE */ 527 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 528 pos[1] >= 4 && 529 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 530 if (pos[5] == 0x01) 531 wpa_ie = pos; /* WPA IE */ 532 else if (pos[5] == 0x04) { 533 wpa_ie = pos; /* WPS IE */ 534 break; /* overrides WPA/RSN IE */ 535 } 536 } 537 pos += 2 + pos[1]; 538 } 539 540 ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie, 541 wpa_ie ? 2 + wpa_ie[1] : 0, 542 keymgmt, ucipher, auth); 543 544 /* send event to application */ 545 memset(&sinfo, 0, sizeof(sinfo)); 546 547 /* TODO: sinfo.generation */ 548 549 sinfo.assoc_req_ies = ies; 550 sinfo.assoc_req_ies_len = ies_len; 551 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 552 553 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 554 555 netif_wake_queue(vif->ndev); 556} 557 558void disconnect_timer_handler(unsigned long ptr) 559{ 560 struct net_device *dev = (struct net_device *)ptr; 561 struct ath6kl_vif *vif = netdev_priv(dev); 562 563 ath6kl_init_profile_info(vif); 564 ath6kl_disconnect(vif); 565} 566 567void ath6kl_disconnect(struct ath6kl_vif *vif) 568{ 569 if (test_bit(CONNECTED, &vif->flags) || 570 test_bit(CONNECT_PEND, &vif->flags)) { 571 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 572 /* 573 * Disconnect command is issued, clear the connect pending 574 * flag. The connected flag will be cleared in 575 * disconnect event notification. 576 */ 577 clear_bit(CONNECT_PEND, &vif->flags); 578 } 579} 580 581/* WMI Event handlers */ 582 583static const char *get_hw_id_string(u32 id) 584{ 585 switch (id) { 586 case AR6003_REV1_VERSION: 587 return "1.0"; 588 case AR6003_REV2_VERSION: 589 return "2.0"; 590 case AR6003_REV3_VERSION: 591 return "2.1.1"; 592 default: 593 return "unknown"; 594 } 595} 596 597void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 598{ 599 struct ath6kl *ar = devt; 600 601 memcpy(ar->mac_addr, datap, ETH_ALEN); 602 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 603 __func__, ar->mac_addr); 604 605 ar->version.wlan_ver = sw_ver; 606 ar->version.abi_ver = abi_ver; 607 608 snprintf(ar->wiphy->fw_version, 609 sizeof(ar->wiphy->fw_version), 610 "%u.%u.%u.%u", 611 (ar->version.wlan_ver & 0xf0000000) >> 28, 612 (ar->version.wlan_ver & 0x0f000000) >> 24, 613 (ar->version.wlan_ver & 0x00ff0000) >> 16, 614 (ar->version.wlan_ver & 0x0000ffff)); 615 616 /* indicate to the waiting thread that the ready event was received */ 617 set_bit(WMI_READY, &ar->flag); 618 wake_up(&ar->event_wq); 619 620 if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) { 621 ath6kl_info("hw %s fw %s%s\n", 622 get_hw_id_string(ar->wiphy->hw_version), 623 ar->wiphy->fw_version, 624 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 625 } 626} 627 628void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 629{ 630 struct ath6kl *ar = vif->ar; 631 bool aborted = false; 632 633 if (status != WMI_SCAN_STATUS_SUCCESS) 634 aborted = true; 635 636 ath6kl_cfg80211_scan_complete_event(vif, aborted); 637 638 if (!ar->usr_bss_filter) { 639 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 640 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 641 NONE_BSS_FILTER, 0); 642 } 643 644 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 645} 646 647void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 648 u16 listen_int, u16 beacon_int, 649 enum network_type net_type, u8 beacon_ie_len, 650 u8 assoc_req_len, u8 assoc_resp_len, 651 u8 *assoc_info) 652{ 653 struct ath6kl *ar = vif->ar; 654 655 ath6kl_cfg80211_connect_event(vif, channel, bssid, 656 listen_int, beacon_int, 657 net_type, beacon_ie_len, 658 assoc_req_len, assoc_resp_len, 659 assoc_info); 660 661 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 662 vif->bss_ch = channel; 663 664 if ((vif->nw_type == INFRA_NETWORK)) 665 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 666 ar->listen_intvl_t, 667 ar->listen_intvl_b); 668 669 netif_wake_queue(vif->ndev); 670 671 /* Update connect & link status atomically */ 672 spin_lock_bh(&vif->if_lock); 673 set_bit(CONNECTED, &vif->flags); 674 clear_bit(CONNECT_PEND, &vif->flags); 675 netif_carrier_on(vif->ndev); 676 spin_unlock_bh(&vif->if_lock); 677 678 aggr_reset_state(vif->aggr_cntxt); 679 vif->reconnect_flag = 0; 680 681 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 682 memset(ar->node_map, 0, sizeof(ar->node_map)); 683 ar->node_num = 0; 684 ar->next_ep_id = ENDPOINT_2; 685 } 686 687 if (!ar->usr_bss_filter) { 688 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 689 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 690 CURRENT_BSS_FILTER, 0); 691 } 692} 693 694void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 695{ 696 struct ath6kl_sta *sta; 697 struct ath6kl *ar = vif->ar; 698 u8 tsc[6]; 699 700 /* 701 * For AP case, keyid will have aid of STA which sent pkt with 702 * MIC error. Use this aid to get MAC & send it to hostapd. 703 */ 704 if (vif->nw_type == AP_NETWORK) { 705 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 706 if (!sta) 707 return; 708 709 ath6kl_dbg(ATH6KL_DBG_TRC, 710 "ap tkip mic error received from aid=%d\n", keyid); 711 712 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 713 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 714 NL80211_KEYTYPE_PAIRWISE, keyid, 715 tsc, GFP_KERNEL); 716 } else 717 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 718 719} 720 721static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 722{ 723 struct wmi_target_stats *tgt_stats = 724 (struct wmi_target_stats *) ptr; 725 struct ath6kl *ar = vif->ar; 726 struct target_stats *stats = &vif->target_stats; 727 struct tkip_ccmp_stats *ccmp_stats; 728 u8 ac; 729 730 if (len < sizeof(*tgt_stats)) 731 return; 732 733 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 734 735 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 736 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 737 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 738 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 739 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 740 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 741 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 742 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 743 stats->tx_rts_success_cnt += 744 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 745 746 for (ac = 0; ac < WMM_NUM_AC; ac++) 747 stats->tx_pkt_per_ac[ac] += 748 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 749 750 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 751 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 752 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 753 stats->tx_mult_retry_cnt += 754 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 755 stats->tx_rts_fail_cnt += 756 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 757 stats->tx_ucast_rate = 758 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 759 760 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 761 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 762 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 763 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 764 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 765 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 766 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 767 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 768 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 769 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 770 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 771 stats->rx_key_cache_miss += 772 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 773 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 774 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 775 stats->rx_ucast_rate = 776 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 777 778 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 779 780 stats->tkip_local_mic_fail += 781 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 782 stats->tkip_cnter_measures_invoked += 783 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 784 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 785 786 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 787 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 788 789 stats->pwr_save_fail_cnt += 790 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 791 stats->noise_floor_calib = 792 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 793 794 stats->cs_bmiss_cnt += 795 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 796 stats->cs_low_rssi_cnt += 797 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 798 stats->cs_connect_cnt += 799 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 800 stats->cs_discon_cnt += 801 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 802 803 stats->cs_ave_beacon_rssi = 804 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 805 806 stats->cs_last_roam_msec = 807 tgt_stats->cserv_stats.cs_last_roam_msec; 808 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 809 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 810 811 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 812 813 stats->wow_pkt_dropped += 814 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 815 stats->wow_host_pkt_wakeups += 816 tgt_stats->wow_stats.wow_host_pkt_wakeups; 817 stats->wow_host_evt_wakeups += 818 tgt_stats->wow_stats.wow_host_evt_wakeups; 819 stats->wow_evt_discarded += 820 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 821 822 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 823 clear_bit(STATS_UPDATE_PEND, &vif->flags); 824 wake_up(&ar->event_wq); 825 } 826} 827 828static void ath6kl_add_le32(__le32 *var, __le32 val) 829{ 830 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 831} 832 833void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 834{ 835 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 836 struct ath6kl *ar = vif->ar; 837 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 838 struct wmi_per_sta_stat *st_ap, *st_p; 839 u8 ac; 840 841 if (vif->nw_type == AP_NETWORK) { 842 if (len < sizeof(*p)) 843 return; 844 845 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 846 st_ap = &ap->sta[ac]; 847 st_p = &p->sta[ac]; 848 849 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 850 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 851 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 852 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 853 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 854 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 855 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 856 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 857 } 858 859 } else { 860 ath6kl_update_target_stats(vif, ptr, len); 861 } 862} 863 864void ath6kl_wakeup_event(void *dev) 865{ 866 struct ath6kl *ar = (struct ath6kl *) dev; 867 868 wake_up(&ar->event_wq); 869} 870 871void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 872{ 873 struct ath6kl *ar = (struct ath6kl *) devt; 874 875 ar->tx_pwr = tx_pwr; 876 wake_up(&ar->event_wq); 877} 878 879void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 880{ 881 struct ath6kl_sta *conn; 882 struct sk_buff *skb; 883 bool psq_empty = false; 884 struct ath6kl *ar = vif->ar; 885 886 conn = ath6kl_find_sta_by_aid(ar, aid); 887 888 if (!conn) 889 return; 890 /* 891 * Send out a packet queued on ps queue. When the ps queue 892 * becomes empty update the PVB for this station. 893 */ 894 spin_lock_bh(&conn->psq_lock); 895 psq_empty = skb_queue_empty(&conn->psq); 896 spin_unlock_bh(&conn->psq_lock); 897 898 if (psq_empty) 899 /* TODO: Send out a NULL data frame */ 900 return; 901 902 spin_lock_bh(&conn->psq_lock); 903 skb = skb_dequeue(&conn->psq); 904 spin_unlock_bh(&conn->psq_lock); 905 906 conn->sta_flags |= STA_PS_POLLED; 907 ath6kl_data_tx(skb, vif->ndev); 908 conn->sta_flags &= ~STA_PS_POLLED; 909 910 spin_lock_bh(&conn->psq_lock); 911 psq_empty = skb_queue_empty(&conn->psq); 912 spin_unlock_bh(&conn->psq_lock); 913 914 if (psq_empty) 915 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 916} 917 918void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 919{ 920 bool mcastq_empty = false; 921 struct sk_buff *skb; 922 struct ath6kl *ar = vif->ar; 923 924 /* 925 * If there are no associated STAs, ignore the DTIM expiry event. 926 * There can be potential race conditions where the last associated 927 * STA may disconnect & before the host could clear the 'Indicate 928 * DTIM' request to the firmware, the firmware would have just 929 * indicated a DTIM expiry event. The race is between 'clear DTIM 930 * expiry cmd' going from the host to the firmware & the DTIM 931 * expiry event happening from the firmware to the host. 932 */ 933 if (!ar->sta_list_index) 934 return; 935 936 spin_lock_bh(&ar->mcastpsq_lock); 937 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 938 spin_unlock_bh(&ar->mcastpsq_lock); 939 940 if (mcastq_empty) 941 return; 942 943 /* set the STA flag to dtim_expired for the frame to go out */ 944 set_bit(DTIM_EXPIRED, &vif->flags); 945 946 spin_lock_bh(&ar->mcastpsq_lock); 947 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 948 spin_unlock_bh(&ar->mcastpsq_lock); 949 950 ath6kl_data_tx(skb, vif->ndev); 951 952 spin_lock_bh(&ar->mcastpsq_lock); 953 } 954 spin_unlock_bh(&ar->mcastpsq_lock); 955 956 clear_bit(DTIM_EXPIRED, &vif->flags); 957 958 /* clear the LSB of the BitMapCtl field of the TIM IE */ 959 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 960} 961 962void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 963 u8 assoc_resp_len, u8 *assoc_info, 964 u16 prot_reason_status) 965{ 966 struct ath6kl *ar = vif->ar; 967 968 if (vif->nw_type == AP_NETWORK) { 969 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 970 return; 971 972 /* if no more associated STAs, empty the mcast PS q */ 973 if (ar->sta_list_index == 0) { 974 spin_lock_bh(&ar->mcastpsq_lock); 975 skb_queue_purge(&ar->mcastpsq); 976 spin_unlock_bh(&ar->mcastpsq_lock); 977 978 /* clear the LSB of the TIM IE's BitMapCtl field */ 979 if (test_bit(WMI_READY, &ar->flag)) 980 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 981 MCAST_AID, 0); 982 } 983 984 if (!is_broadcast_ether_addr(bssid)) { 985 /* send event to application */ 986 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 987 } 988 989 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 990 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 991 clear_bit(CONNECTED, &vif->flags); 992 } 993 return; 994 } 995 996 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 997 assoc_resp_len, assoc_info, 998 prot_reason_status); 999 1000 aggr_reset_state(vif->aggr_cntxt); 1001 1002 del_timer(&vif->disconnect_timer); 1003 1004 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 1005 1006 /* 1007 * If the event is due to disconnect cmd from the host, only they 1008 * the target would stop trying to connect. Under any other 1009 * condition, target would keep trying to connect. 1010 */ 1011 if (reason == DISCONNECT_CMD) { 1012 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1013 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1014 NONE_BSS_FILTER, 0); 1015 } else { 1016 set_bit(CONNECT_PEND, &vif->flags); 1017 if (((reason == ASSOC_FAILED) && 1018 (prot_reason_status == 0x11)) || 1019 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1020 && (vif->reconnect_flag == 1))) { 1021 set_bit(CONNECTED, &vif->flags); 1022 return; 1023 } 1024 } 1025 1026 /* update connect & link status atomically */ 1027 spin_lock_bh(&vif->if_lock); 1028 clear_bit(CONNECTED, &vif->flags); 1029 netif_carrier_off(vif->ndev); 1030 spin_unlock_bh(&vif->if_lock); 1031 1032 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1033 vif->reconnect_flag = 0; 1034 1035 if (reason != CSERV_DISCONNECT) 1036 ar->user_key_ctrl = 0; 1037 1038 netif_stop_queue(vif->ndev); 1039 memset(vif->bssid, 0, sizeof(vif->bssid)); 1040 vif->bss_ch = 0; 1041 1042 ath6kl_tx_data_cleanup(ar); 1043} 1044 1045struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1046{ 1047 struct ath6kl_vif *vif; 1048 1049 spin_lock_bh(&ar->list_lock); 1050 if (list_empty(&ar->vif_list)) { 1051 spin_unlock_bh(&ar->list_lock); 1052 return NULL; 1053 } 1054 1055 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1056 1057 spin_unlock_bh(&ar->list_lock); 1058 1059 return vif; 1060} 1061 1062static int ath6kl_open(struct net_device *dev) 1063{ 1064 struct ath6kl_vif *vif = netdev_priv(dev); 1065 int ret; 1066 1067 /* FIXME: how to handle multi vif support? */ 1068 ret = ath6kl_init_hw_start(vif->ar); 1069 if (ret) 1070 return ret; 1071 1072 set_bit(WLAN_ENABLED, &vif->flags); 1073 1074 if (test_bit(CONNECTED, &vif->flags)) { 1075 netif_carrier_on(dev); 1076 netif_wake_queue(dev); 1077 } else 1078 netif_carrier_off(dev); 1079 1080 return 0; 1081} 1082 1083static int ath6kl_close(struct net_device *dev) 1084{ 1085 struct ath6kl *ar = ath6kl_priv(dev); 1086 struct ath6kl_vif *vif = netdev_priv(dev); 1087 int ret; 1088 1089 netif_stop_queue(dev); 1090 1091 ath6kl_disconnect(vif); 1092 1093 if (test_bit(WMI_READY, &ar->flag)) { 1094 if (ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0xFFFF, 1095 0, 0, 0, 0, 0, 0, 0, 0, 0)) 1096 return -EIO; 1097 1098 } 1099 1100 ath6kl_cfg80211_scan_complete_event(vif, true); 1101 1102 /* FIXME: how to handle multi vif support? */ 1103 ret = ath6kl_init_hw_stop(ar); 1104 if (ret) 1105 return ret; 1106 1107 clear_bit(WLAN_ENABLED, &vif->flags); 1108 1109 return 0; 1110} 1111 1112static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1113{ 1114 struct ath6kl_vif *vif = netdev_priv(dev); 1115 1116 return &vif->net_stats; 1117} 1118 1119static struct net_device_ops ath6kl_netdev_ops = { 1120 .ndo_open = ath6kl_open, 1121 .ndo_stop = ath6kl_close, 1122 .ndo_start_xmit = ath6kl_data_tx, 1123 .ndo_get_stats = ath6kl_get_stats, 1124}; 1125 1126void init_netdev(struct net_device *dev) 1127{ 1128 dev->netdev_ops = &ath6kl_netdev_ops; 1129 dev->destructor = free_netdev; 1130 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1131 1132 dev->needed_headroom = ETH_HLEN; 1133 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1134 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1135 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1136 1137 return; 1138} 1139