main.c revision ec4b7f602d24839a85131dc5b498e69c84ee8373
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 581void ath6kl_deep_sleep_enable(struct ath6kl *ar) 582{ 583 ath6kl_cfg80211_stop(ar); 584 585 /* save the current power mode before enabling power save */ 586 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 587 588 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0) 589 ath6kl_warn("ath6kl_deep_sleep_enable: " 590 "wmi_powermode_cmd failed\n"); 591} 592 593/* WMI Event handlers */ 594 595static const char *get_hw_id_string(u32 id) 596{ 597 switch (id) { 598 case AR6003_REV1_VERSION: 599 return "1.0"; 600 case AR6003_REV2_VERSION: 601 return "2.0"; 602 case AR6003_REV3_VERSION: 603 return "2.1.1"; 604 default: 605 return "unknown"; 606 } 607} 608 609void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 610{ 611 struct ath6kl *ar = devt; 612 613 memcpy(ar->mac_addr, datap, ETH_ALEN); 614 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 615 __func__, ar->mac_addr); 616 617 ar->version.wlan_ver = sw_ver; 618 ar->version.abi_ver = abi_ver; 619 620 snprintf(ar->wiphy->fw_version, 621 sizeof(ar->wiphy->fw_version), 622 "%u.%u.%u.%u", 623 (ar->version.wlan_ver & 0xf0000000) >> 28, 624 (ar->version.wlan_ver & 0x0f000000) >> 24, 625 (ar->version.wlan_ver & 0x00ff0000) >> 16, 626 (ar->version.wlan_ver & 0x0000ffff)); 627 628 /* indicate to the waiting thread that the ready event was received */ 629 set_bit(WMI_READY, &ar->flag); 630 wake_up(&ar->event_wq); 631 632 if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) { 633 ath6kl_info("hw %s fw %s%s\n", 634 get_hw_id_string(ar->wiphy->hw_version), 635 ar->wiphy->fw_version, 636 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 637 } 638} 639 640void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 641{ 642 struct ath6kl *ar = vif->ar; 643 bool aborted = false; 644 645 if (status != WMI_SCAN_STATUS_SUCCESS) 646 aborted = true; 647 648 ath6kl_cfg80211_scan_complete_event(vif, aborted); 649 650 if (!ar->usr_bss_filter) { 651 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 652 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 653 NONE_BSS_FILTER, 0); 654 } 655 656 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 657} 658 659void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 660 u16 listen_int, u16 beacon_int, 661 enum network_type net_type, u8 beacon_ie_len, 662 u8 assoc_req_len, u8 assoc_resp_len, 663 u8 *assoc_info) 664{ 665 struct ath6kl *ar = vif->ar; 666 667 ath6kl_cfg80211_connect_event(vif, channel, bssid, 668 listen_int, beacon_int, 669 net_type, beacon_ie_len, 670 assoc_req_len, assoc_resp_len, 671 assoc_info); 672 673 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 674 vif->bss_ch = channel; 675 676 if ((vif->nw_type == INFRA_NETWORK)) 677 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 678 ar->listen_intvl_t, 679 ar->listen_intvl_b); 680 681 netif_wake_queue(vif->ndev); 682 683 /* Update connect & link status atomically */ 684 spin_lock_bh(&vif->if_lock); 685 set_bit(CONNECTED, &vif->flags); 686 clear_bit(CONNECT_PEND, &vif->flags); 687 netif_carrier_on(vif->ndev); 688 spin_unlock_bh(&vif->if_lock); 689 690 aggr_reset_state(vif->aggr_cntxt); 691 vif->reconnect_flag = 0; 692 693 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 694 memset(ar->node_map, 0, sizeof(ar->node_map)); 695 ar->node_num = 0; 696 ar->next_ep_id = ENDPOINT_2; 697 } 698 699 if (!ar->usr_bss_filter) { 700 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 701 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 702 CURRENT_BSS_FILTER, 0); 703 } 704} 705 706void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 707{ 708 struct ath6kl_sta *sta; 709 struct ath6kl *ar = vif->ar; 710 u8 tsc[6]; 711 712 /* 713 * For AP case, keyid will have aid of STA which sent pkt with 714 * MIC error. Use this aid to get MAC & send it to hostapd. 715 */ 716 if (vif->nw_type == AP_NETWORK) { 717 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 718 if (!sta) 719 return; 720 721 ath6kl_dbg(ATH6KL_DBG_TRC, 722 "ap tkip mic error received from aid=%d\n", keyid); 723 724 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 725 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 726 NL80211_KEYTYPE_PAIRWISE, keyid, 727 tsc, GFP_KERNEL); 728 } else 729 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 730 731} 732 733static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 734{ 735 struct wmi_target_stats *tgt_stats = 736 (struct wmi_target_stats *) ptr; 737 struct ath6kl *ar = vif->ar; 738 struct target_stats *stats = &vif->target_stats; 739 struct tkip_ccmp_stats *ccmp_stats; 740 u8 ac; 741 742 if (len < sizeof(*tgt_stats)) 743 return; 744 745 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 746 747 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 748 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 749 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 750 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 751 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 752 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 753 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 754 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 755 stats->tx_rts_success_cnt += 756 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 757 758 for (ac = 0; ac < WMM_NUM_AC; ac++) 759 stats->tx_pkt_per_ac[ac] += 760 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 761 762 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 763 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 764 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 765 stats->tx_mult_retry_cnt += 766 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 767 stats->tx_rts_fail_cnt += 768 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 769 stats->tx_ucast_rate = 770 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 771 772 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 773 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 774 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 775 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 776 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 777 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 778 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 779 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 780 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 781 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 782 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 783 stats->rx_key_cache_miss += 784 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 785 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 786 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 787 stats->rx_ucast_rate = 788 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 789 790 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 791 792 stats->tkip_local_mic_fail += 793 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 794 stats->tkip_cnter_measures_invoked += 795 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 796 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 797 798 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 799 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 800 801 stats->pwr_save_fail_cnt += 802 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 803 stats->noise_floor_calib = 804 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 805 806 stats->cs_bmiss_cnt += 807 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 808 stats->cs_low_rssi_cnt += 809 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 810 stats->cs_connect_cnt += 811 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 812 stats->cs_discon_cnt += 813 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 814 815 stats->cs_ave_beacon_rssi = 816 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 817 818 stats->cs_last_roam_msec = 819 tgt_stats->cserv_stats.cs_last_roam_msec; 820 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 821 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 822 823 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 824 825 stats->wow_pkt_dropped += 826 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 827 stats->wow_host_pkt_wakeups += 828 tgt_stats->wow_stats.wow_host_pkt_wakeups; 829 stats->wow_host_evt_wakeups += 830 tgt_stats->wow_stats.wow_host_evt_wakeups; 831 stats->wow_evt_discarded += 832 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 833 834 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 835 clear_bit(STATS_UPDATE_PEND, &vif->flags); 836 wake_up(&ar->event_wq); 837 } 838} 839 840static void ath6kl_add_le32(__le32 *var, __le32 val) 841{ 842 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 843} 844 845void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 846{ 847 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 848 struct ath6kl *ar = vif->ar; 849 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 850 struct wmi_per_sta_stat *st_ap, *st_p; 851 u8 ac; 852 853 if (vif->nw_type == AP_NETWORK) { 854 if (len < sizeof(*p)) 855 return; 856 857 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 858 st_ap = &ap->sta[ac]; 859 st_p = &p->sta[ac]; 860 861 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 862 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 863 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 864 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 865 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 866 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 867 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 868 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 869 } 870 871 } else { 872 ath6kl_update_target_stats(vif, ptr, len); 873 } 874} 875 876void ath6kl_wakeup_event(void *dev) 877{ 878 struct ath6kl *ar = (struct ath6kl *) dev; 879 880 wake_up(&ar->event_wq); 881} 882 883void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 884{ 885 struct ath6kl *ar = (struct ath6kl *) devt; 886 887 ar->tx_pwr = tx_pwr; 888 wake_up(&ar->event_wq); 889} 890 891void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 892{ 893 struct ath6kl_sta *conn; 894 struct sk_buff *skb; 895 bool psq_empty = false; 896 struct ath6kl *ar = vif->ar; 897 898 conn = ath6kl_find_sta_by_aid(ar, aid); 899 900 if (!conn) 901 return; 902 /* 903 * Send out a packet queued on ps queue. When the ps queue 904 * becomes empty update the PVB for this station. 905 */ 906 spin_lock_bh(&conn->psq_lock); 907 psq_empty = skb_queue_empty(&conn->psq); 908 spin_unlock_bh(&conn->psq_lock); 909 910 if (psq_empty) 911 /* TODO: Send out a NULL data frame */ 912 return; 913 914 spin_lock_bh(&conn->psq_lock); 915 skb = skb_dequeue(&conn->psq); 916 spin_unlock_bh(&conn->psq_lock); 917 918 conn->sta_flags |= STA_PS_POLLED; 919 ath6kl_data_tx(skb, vif->ndev); 920 conn->sta_flags &= ~STA_PS_POLLED; 921 922 spin_lock_bh(&conn->psq_lock); 923 psq_empty = skb_queue_empty(&conn->psq); 924 spin_unlock_bh(&conn->psq_lock); 925 926 if (psq_empty) 927 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 928} 929 930void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 931{ 932 bool mcastq_empty = false; 933 struct sk_buff *skb; 934 struct ath6kl *ar = vif->ar; 935 936 /* 937 * If there are no associated STAs, ignore the DTIM expiry event. 938 * There can be potential race conditions where the last associated 939 * STA may disconnect & before the host could clear the 'Indicate 940 * DTIM' request to the firmware, the firmware would have just 941 * indicated a DTIM expiry event. The race is between 'clear DTIM 942 * expiry cmd' going from the host to the firmware & the DTIM 943 * expiry event happening from the firmware to the host. 944 */ 945 if (!ar->sta_list_index) 946 return; 947 948 spin_lock_bh(&ar->mcastpsq_lock); 949 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 950 spin_unlock_bh(&ar->mcastpsq_lock); 951 952 if (mcastq_empty) 953 return; 954 955 /* set the STA flag to dtim_expired for the frame to go out */ 956 set_bit(DTIM_EXPIRED, &vif->flags); 957 958 spin_lock_bh(&ar->mcastpsq_lock); 959 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 960 spin_unlock_bh(&ar->mcastpsq_lock); 961 962 ath6kl_data_tx(skb, vif->ndev); 963 964 spin_lock_bh(&ar->mcastpsq_lock); 965 } 966 spin_unlock_bh(&ar->mcastpsq_lock); 967 968 clear_bit(DTIM_EXPIRED, &vif->flags); 969 970 /* clear the LSB of the BitMapCtl field of the TIM IE */ 971 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 972} 973 974void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 975 u8 assoc_resp_len, u8 *assoc_info, 976 u16 prot_reason_status) 977{ 978 struct ath6kl *ar = vif->ar; 979 980 if (vif->nw_type == AP_NETWORK) { 981 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 982 return; 983 984 /* if no more associated STAs, empty the mcast PS q */ 985 if (ar->sta_list_index == 0) { 986 spin_lock_bh(&ar->mcastpsq_lock); 987 skb_queue_purge(&ar->mcastpsq); 988 spin_unlock_bh(&ar->mcastpsq_lock); 989 990 /* clear the LSB of the TIM IE's BitMapCtl field */ 991 if (test_bit(WMI_READY, &ar->flag)) 992 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 993 MCAST_AID, 0); 994 } 995 996 if (!is_broadcast_ether_addr(bssid)) { 997 /* send event to application */ 998 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 999 } 1000 1001 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 1002 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 1003 clear_bit(CONNECTED, &vif->flags); 1004 } 1005 return; 1006 } 1007 1008 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 1009 assoc_resp_len, assoc_info, 1010 prot_reason_status); 1011 1012 aggr_reset_state(vif->aggr_cntxt); 1013 1014 del_timer(&vif->disconnect_timer); 1015 1016 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 1017 1018 /* 1019 * If the event is due to disconnect cmd from the host, only they 1020 * the target would stop trying to connect. Under any other 1021 * condition, target would keep trying to connect. 1022 */ 1023 if (reason == DISCONNECT_CMD) { 1024 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1025 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1026 NONE_BSS_FILTER, 0); 1027 } else { 1028 set_bit(CONNECT_PEND, &vif->flags); 1029 if (((reason == ASSOC_FAILED) && 1030 (prot_reason_status == 0x11)) || 1031 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1032 && (vif->reconnect_flag == 1))) { 1033 set_bit(CONNECTED, &vif->flags); 1034 return; 1035 } 1036 } 1037 1038 /* update connect & link status atomically */ 1039 spin_lock_bh(&vif->if_lock); 1040 clear_bit(CONNECTED, &vif->flags); 1041 netif_carrier_off(vif->ndev); 1042 spin_unlock_bh(&vif->if_lock); 1043 1044 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1045 vif->reconnect_flag = 0; 1046 1047 if (reason != CSERV_DISCONNECT) 1048 ar->user_key_ctrl = 0; 1049 1050 netif_stop_queue(vif->ndev); 1051 memset(vif->bssid, 0, sizeof(vif->bssid)); 1052 vif->bss_ch = 0; 1053 1054 ath6kl_tx_data_cleanup(ar); 1055} 1056 1057struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1058{ 1059 struct ath6kl_vif *vif; 1060 1061 spin_lock(&ar->list_lock); 1062 if (list_empty(&ar->vif_list)) { 1063 spin_unlock(&ar->list_lock); 1064 return NULL; 1065 } 1066 1067 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1068 1069 spin_unlock(&ar->list_lock); 1070 1071 return vif; 1072} 1073 1074static int ath6kl_open(struct net_device *dev) 1075{ 1076 struct ath6kl_vif *vif = netdev_priv(dev); 1077 int ret; 1078 1079 /* FIXME: how to handle multi vif support? */ 1080 ret = ath6kl_init_hw_start(vif->ar); 1081 if (ret) 1082 return ret; 1083 1084 set_bit(WLAN_ENABLED, &vif->flags); 1085 1086 if (test_bit(CONNECTED, &vif->flags)) { 1087 netif_carrier_on(dev); 1088 netif_wake_queue(dev); 1089 } else 1090 netif_carrier_off(dev); 1091 1092 return 0; 1093} 1094 1095static int ath6kl_close(struct net_device *dev) 1096{ 1097 struct ath6kl *ar = ath6kl_priv(dev); 1098 struct ath6kl_vif *vif = netdev_priv(dev); 1099 int ret; 1100 1101 netif_stop_queue(dev); 1102 1103 ath6kl_disconnect(vif); 1104 1105 if (test_bit(WMI_READY, &ar->flag)) { 1106 if (ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0xFFFF, 1107 0, 0, 0, 0, 0, 0, 0, 0, 0)) 1108 return -EIO; 1109 1110 } 1111 1112 ath6kl_cfg80211_scan_complete_event(vif, true); 1113 1114 /* FIXME: how to handle multi vif support? */ 1115 ret = ath6kl_init_hw_stop(ar); 1116 if (ret) 1117 return ret; 1118 1119 clear_bit(WLAN_ENABLED, &vif->flags); 1120 1121 return 0; 1122} 1123 1124static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1125{ 1126 struct ath6kl_vif *vif = netdev_priv(dev); 1127 1128 return &vif->net_stats; 1129} 1130 1131static struct net_device_ops ath6kl_netdev_ops = { 1132 .ndo_open = ath6kl_open, 1133 .ndo_stop = ath6kl_close, 1134 .ndo_start_xmit = ath6kl_data_tx, 1135 .ndo_get_stats = ath6kl_get_stats, 1136}; 1137 1138void init_netdev(struct net_device *dev) 1139{ 1140 dev->netdev_ops = &ath6kl_netdev_ops; 1141 dev->destructor = free_netdev; 1142 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1143 1144 dev->needed_headroom = ETH_HLEN; 1145 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1146 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1147 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1148 1149 return; 1150} 1151