main.c revision bc48ad31c5814feb4ff8faca9a8d422279593cb1
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/* 179 * Read from the hardware through its diagnostic window. No cooperation 180 * from the firmware is required for this. 181 */ 182int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 183{ 184 int ret; 185 186 ret = ath6kl_hif_diag_read32(ar, address, value); 187 if (ret) { 188 ath6kl_warn("failed to read32 through diagnose window: %d\n", 189 ret); 190 return ret; 191 } 192 193 return 0; 194} 195 196/* 197 * Write to the ATH6KL through its diagnostic window. No cooperation from 198 * the Target is required for this. 199 */ 200int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 201{ 202 int ret; 203 204 ret = ath6kl_hif_diag_write32(ar, address, value); 205 206 if (ret) { 207 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 208 address, value); 209 return ret; 210 } 211 212 return 0; 213} 214 215int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 216{ 217 u32 count, *buf = data; 218 int ret; 219 220 if (WARN_ON(length % 4)) 221 return -EINVAL; 222 223 for (count = 0; count < length / 4; count++, address += 4) { 224 ret = ath6kl_diag_read32(ar, address, &buf[count]); 225 if (ret) 226 return ret; 227 } 228 229 return 0; 230} 231 232int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 233{ 234 u32 count; 235 __le32 *buf = data; 236 int ret; 237 238 if (WARN_ON(length % 4)) 239 return -EINVAL; 240 241 for (count = 0; count < length / 4; count++, address += 4) { 242 ret = ath6kl_diag_write32(ar, address, buf[count]); 243 if (ret) 244 return ret; 245 } 246 247 return 0; 248} 249 250int ath6kl_read_fwlogs(struct ath6kl *ar) 251{ 252 struct ath6kl_dbglog_hdr debug_hdr; 253 struct ath6kl_dbglog_buf debug_buf; 254 u32 address, length, dropped, firstbuf, debug_hdr_addr; 255 int ret = 0, loop; 256 u8 *buf; 257 258 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 259 if (!buf) 260 return -ENOMEM; 261 262 address = TARG_VTOP(ar->target_type, 263 ath6kl_get_hi_item_addr(ar, 264 HI_ITEM(hi_dbglog_hdr))); 265 266 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 267 if (ret) 268 goto out; 269 270 /* Get the contents of the ring buffer */ 271 if (debug_hdr_addr == 0) { 272 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 273 ret = -EINVAL; 274 goto out; 275 } 276 277 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 278 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 279 280 address = TARG_VTOP(ar->target_type, 281 le32_to_cpu(debug_hdr.dbuf_addr)); 282 firstbuf = address; 283 dropped = le32_to_cpu(debug_hdr.dropped); 284 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 285 286 loop = 100; 287 288 do { 289 address = TARG_VTOP(ar->target_type, 290 le32_to_cpu(debug_buf.buffer_addr)); 291 length = le32_to_cpu(debug_buf.length); 292 293 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 294 le32_to_cpu(debug_buf.bufsize))) { 295 length = ALIGN(length, 4); 296 297 ret = ath6kl_diag_read(ar, address, 298 buf, length); 299 if (ret) 300 goto out; 301 302 ath6kl_debug_fwlog_event(ar, buf, length); 303 } 304 305 address = TARG_VTOP(ar->target_type, 306 le32_to_cpu(debug_buf.next)); 307 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 308 if (ret) 309 goto out; 310 311 loop--; 312 313 if (WARN_ON(loop == 0)) { 314 ret = -ETIMEDOUT; 315 goto out; 316 } 317 } while (address != firstbuf); 318 319out: 320 kfree(buf); 321 322 return ret; 323} 324 325/* FIXME: move to a better place, target.h? */ 326#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 327#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 328 329void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 330 bool wait_fot_compltn, bool cold_reset) 331{ 332 int status = 0; 333 u32 address; 334 __le32 data; 335 336 if (target_type != TARGET_TYPE_AR6003 && 337 target_type != TARGET_TYPE_AR6004) 338 return; 339 340 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 341 cpu_to_le32(RESET_CONTROL_MBOX_RST); 342 343 switch (target_type) { 344 case TARGET_TYPE_AR6003: 345 address = AR6003_RESET_CONTROL_ADDRESS; 346 break; 347 case TARGET_TYPE_AR6004: 348 address = AR6004_RESET_CONTROL_ADDRESS; 349 break; 350 default: 351 address = AR6003_RESET_CONTROL_ADDRESS; 352 break; 353 } 354 355 status = ath6kl_diag_write32(ar, address, data); 356 357 if (status) 358 ath6kl_err("failed to reset target\n"); 359} 360 361static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 362{ 363 u8 index; 364 u8 keyusage; 365 366 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 367 if (vif->wep_key_list[index].key_len) { 368 keyusage = GROUP_USAGE; 369 if (index == vif->def_txkey_index) 370 keyusage |= TX_USAGE; 371 372 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 373 index, 374 WEP_CRYPT, 375 keyusage, 376 vif->wep_key_list[index].key_len, 377 NULL, 0, 378 vif->wep_key_list[index].key, 379 KEY_OP_INIT_VAL, NULL, 380 NO_SYNC_WMIFLAG); 381 } 382 } 383} 384 385void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 386{ 387 struct ath6kl *ar = vif->ar; 388 struct ath6kl_req_key *ik; 389 int res; 390 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 391 392 ik = &ar->ap_mode_bkey; 393 394 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 395 396 switch (vif->auth_mode) { 397 case NONE_AUTH: 398 if (vif->prwise_crypto == WEP_CRYPT) 399 ath6kl_install_static_wep_keys(vif); 400 if (!ik->valid || ik->key_type != WAPI_CRYPT) 401 break; 402 /* for WAPI, we need to set the delayed group key, continue: */ 403 case WPA_PSK_AUTH: 404 case WPA2_PSK_AUTH: 405 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 406 if (!ik->valid) 407 break; 408 409 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 410 "the initial group key for AP mode\n"); 411 memset(key_rsc, 0, sizeof(key_rsc)); 412 res = ath6kl_wmi_addkey_cmd( 413 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 414 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN, 415 ik->key, 416 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 417 if (res) { 418 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 419 "addkey failed: %d\n", res); 420 } 421 break; 422 } 423 424 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 425 set_bit(CONNECTED, &vif->flags); 426 netif_carrier_on(vif->ndev); 427} 428 429void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 430 u8 keymgmt, u8 ucipher, u8 auth, 431 u8 assoc_req_len, u8 *assoc_info) 432{ 433 struct ath6kl *ar = vif->ar; 434 u8 *ies = NULL, *wpa_ie = NULL, *pos; 435 size_t ies_len = 0; 436 struct station_info sinfo; 437 438 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 439 440 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 441 struct ieee80211_mgmt *mgmt = 442 (struct ieee80211_mgmt *) assoc_info; 443 if (ieee80211_is_assoc_req(mgmt->frame_control) && 444 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 445 sizeof(mgmt->u.assoc_req)) { 446 ies = mgmt->u.assoc_req.variable; 447 ies_len = assoc_info + assoc_req_len - ies; 448 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 449 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 450 + sizeof(mgmt->u.reassoc_req)) { 451 ies = mgmt->u.reassoc_req.variable; 452 ies_len = assoc_info + assoc_req_len - ies; 453 } 454 } 455 456 pos = ies; 457 while (pos && pos + 1 < ies + ies_len) { 458 if (pos + 2 + pos[1] > ies + ies_len) 459 break; 460 if (pos[0] == WLAN_EID_RSN) 461 wpa_ie = pos; /* RSN IE */ 462 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 463 pos[1] >= 4 && 464 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 465 if (pos[5] == 0x01) 466 wpa_ie = pos; /* WPA IE */ 467 else if (pos[5] == 0x04) { 468 wpa_ie = pos; /* WPS IE */ 469 break; /* overrides WPA/RSN IE */ 470 } 471 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 472 /* 473 * Note: WAPI Parameter Set IE re-uses Element ID that 474 * was officially allocated for BSS AC Access Delay. As 475 * such, we need to be a bit more careful on when 476 * parsing the frame. However, BSS AC Access Delay 477 * element is not supposed to be included in 478 * (Re)Association Request frames, so this should not 479 * cause problems. 480 */ 481 wpa_ie = pos; /* WAPI IE */ 482 break; 483 } 484 pos += 2 + pos[1]; 485 } 486 487 ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie, 488 wpa_ie ? 2 + wpa_ie[1] : 0, 489 keymgmt, ucipher, auth); 490 491 /* send event to application */ 492 memset(&sinfo, 0, sizeof(sinfo)); 493 494 /* TODO: sinfo.generation */ 495 496 sinfo.assoc_req_ies = ies; 497 sinfo.assoc_req_ies_len = ies_len; 498 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 499 500 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 501 502 netif_wake_queue(vif->ndev); 503} 504 505void disconnect_timer_handler(unsigned long ptr) 506{ 507 struct net_device *dev = (struct net_device *)ptr; 508 struct ath6kl_vif *vif = netdev_priv(dev); 509 510 ath6kl_init_profile_info(vif); 511 ath6kl_disconnect(vif); 512} 513 514void ath6kl_disconnect(struct ath6kl_vif *vif) 515{ 516 if (test_bit(CONNECTED, &vif->flags) || 517 test_bit(CONNECT_PEND, &vif->flags)) { 518 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 519 /* 520 * Disconnect command is issued, clear the connect pending 521 * flag. The connected flag will be cleared in 522 * disconnect event notification. 523 */ 524 clear_bit(CONNECT_PEND, &vif->flags); 525 } 526} 527 528/* WMI Event handlers */ 529 530void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 531{ 532 struct ath6kl *ar = devt; 533 534 memcpy(ar->mac_addr, datap, ETH_ALEN); 535 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 536 __func__, ar->mac_addr); 537 538 ar->version.wlan_ver = sw_ver; 539 ar->version.abi_ver = abi_ver; 540 541 snprintf(ar->wiphy->fw_version, 542 sizeof(ar->wiphy->fw_version), 543 "%u.%u.%u.%u", 544 (ar->version.wlan_ver & 0xf0000000) >> 28, 545 (ar->version.wlan_ver & 0x0f000000) >> 24, 546 (ar->version.wlan_ver & 0x00ff0000) >> 16, 547 (ar->version.wlan_ver & 0x0000ffff)); 548 549 /* indicate to the waiting thread that the ready event was received */ 550 set_bit(WMI_READY, &ar->flag); 551 wake_up(&ar->event_wq); 552} 553 554void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 555{ 556 struct ath6kl *ar = vif->ar; 557 bool aborted = false; 558 559 if (status != WMI_SCAN_STATUS_SUCCESS) 560 aborted = true; 561 562 ath6kl_cfg80211_scan_complete_event(vif, aborted); 563 564 if (!ar->usr_bss_filter) { 565 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 566 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 567 NONE_BSS_FILTER, 0); 568 } 569 570 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 571} 572 573void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 574 u16 listen_int, u16 beacon_int, 575 enum network_type net_type, u8 beacon_ie_len, 576 u8 assoc_req_len, u8 assoc_resp_len, 577 u8 *assoc_info) 578{ 579 struct ath6kl *ar = vif->ar; 580 581 ath6kl_cfg80211_connect_event(vif, channel, bssid, 582 listen_int, beacon_int, 583 net_type, beacon_ie_len, 584 assoc_req_len, assoc_resp_len, 585 assoc_info); 586 587 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 588 vif->bss_ch = channel; 589 590 if ((vif->nw_type == INFRA_NETWORK)) 591 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 592 ar->listen_intvl_t, 593 ar->listen_intvl_b); 594 595 netif_wake_queue(vif->ndev); 596 597 /* Update connect & link status atomically */ 598 spin_lock_bh(&vif->if_lock); 599 set_bit(CONNECTED, &vif->flags); 600 clear_bit(CONNECT_PEND, &vif->flags); 601 netif_carrier_on(vif->ndev); 602 spin_unlock_bh(&vif->if_lock); 603 604 aggr_reset_state(vif->aggr_cntxt); 605 vif->reconnect_flag = 0; 606 607 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 608 memset(ar->node_map, 0, sizeof(ar->node_map)); 609 ar->node_num = 0; 610 ar->next_ep_id = ENDPOINT_2; 611 } 612 613 if (!ar->usr_bss_filter) { 614 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 615 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 616 CURRENT_BSS_FILTER, 0); 617 } 618} 619 620void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 621{ 622 struct ath6kl_sta *sta; 623 struct ath6kl *ar = vif->ar; 624 u8 tsc[6]; 625 626 /* 627 * For AP case, keyid will have aid of STA which sent pkt with 628 * MIC error. Use this aid to get MAC & send it to hostapd. 629 */ 630 if (vif->nw_type == AP_NETWORK) { 631 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 632 if (!sta) 633 return; 634 635 ath6kl_dbg(ATH6KL_DBG_TRC, 636 "ap tkip mic error received from aid=%d\n", keyid); 637 638 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 639 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 640 NL80211_KEYTYPE_PAIRWISE, keyid, 641 tsc, GFP_KERNEL); 642 } else 643 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 644 645} 646 647static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 648{ 649 struct wmi_target_stats *tgt_stats = 650 (struct wmi_target_stats *) ptr; 651 struct ath6kl *ar = vif->ar; 652 struct target_stats *stats = &vif->target_stats; 653 struct tkip_ccmp_stats *ccmp_stats; 654 u8 ac; 655 656 if (len < sizeof(*tgt_stats)) 657 return; 658 659 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 660 661 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 662 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 663 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 664 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 665 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 666 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 667 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 668 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 669 stats->tx_rts_success_cnt += 670 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 671 672 for (ac = 0; ac < WMM_NUM_AC; ac++) 673 stats->tx_pkt_per_ac[ac] += 674 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 675 676 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 677 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 678 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 679 stats->tx_mult_retry_cnt += 680 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 681 stats->tx_rts_fail_cnt += 682 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 683 stats->tx_ucast_rate = 684 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 685 686 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 687 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 688 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 689 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 690 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 691 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 692 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 693 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 694 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 695 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 696 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 697 stats->rx_key_cache_miss += 698 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 699 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 700 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 701 stats->rx_ucast_rate = 702 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 703 704 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 705 706 stats->tkip_local_mic_fail += 707 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 708 stats->tkip_cnter_measures_invoked += 709 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 710 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 711 712 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 713 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 714 715 stats->pwr_save_fail_cnt += 716 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 717 stats->noise_floor_calib = 718 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 719 720 stats->cs_bmiss_cnt += 721 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 722 stats->cs_low_rssi_cnt += 723 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 724 stats->cs_connect_cnt += 725 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 726 stats->cs_discon_cnt += 727 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 728 729 stats->cs_ave_beacon_rssi = 730 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 731 732 stats->cs_last_roam_msec = 733 tgt_stats->cserv_stats.cs_last_roam_msec; 734 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 735 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 736 737 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 738 739 stats->wow_pkt_dropped += 740 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 741 stats->wow_host_pkt_wakeups += 742 tgt_stats->wow_stats.wow_host_pkt_wakeups; 743 stats->wow_host_evt_wakeups += 744 tgt_stats->wow_stats.wow_host_evt_wakeups; 745 stats->wow_evt_discarded += 746 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 747 748 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 749 clear_bit(STATS_UPDATE_PEND, &vif->flags); 750 wake_up(&ar->event_wq); 751 } 752} 753 754static void ath6kl_add_le32(__le32 *var, __le32 val) 755{ 756 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 757} 758 759void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 760{ 761 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 762 struct ath6kl *ar = vif->ar; 763 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 764 struct wmi_per_sta_stat *st_ap, *st_p; 765 u8 ac; 766 767 if (vif->nw_type == AP_NETWORK) { 768 if (len < sizeof(*p)) 769 return; 770 771 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 772 st_ap = &ap->sta[ac]; 773 st_p = &p->sta[ac]; 774 775 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 776 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 777 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 778 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 779 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 780 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 781 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 782 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 783 } 784 785 } else { 786 ath6kl_update_target_stats(vif, ptr, len); 787 } 788} 789 790void ath6kl_wakeup_event(void *dev) 791{ 792 struct ath6kl *ar = (struct ath6kl *) dev; 793 794 wake_up(&ar->event_wq); 795} 796 797void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 798{ 799 struct ath6kl *ar = (struct ath6kl *) devt; 800 801 ar->tx_pwr = tx_pwr; 802 wake_up(&ar->event_wq); 803} 804 805void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 806{ 807 struct ath6kl_sta *conn; 808 struct sk_buff *skb; 809 bool psq_empty = false; 810 struct ath6kl *ar = vif->ar; 811 812 conn = ath6kl_find_sta_by_aid(ar, aid); 813 814 if (!conn) 815 return; 816 /* 817 * Send out a packet queued on ps queue. When the ps queue 818 * becomes empty update the PVB for this station. 819 */ 820 spin_lock_bh(&conn->psq_lock); 821 psq_empty = skb_queue_empty(&conn->psq); 822 spin_unlock_bh(&conn->psq_lock); 823 824 if (psq_empty) 825 /* TODO: Send out a NULL data frame */ 826 return; 827 828 spin_lock_bh(&conn->psq_lock); 829 skb = skb_dequeue(&conn->psq); 830 spin_unlock_bh(&conn->psq_lock); 831 832 conn->sta_flags |= STA_PS_POLLED; 833 ath6kl_data_tx(skb, vif->ndev); 834 conn->sta_flags &= ~STA_PS_POLLED; 835 836 spin_lock_bh(&conn->psq_lock); 837 psq_empty = skb_queue_empty(&conn->psq); 838 spin_unlock_bh(&conn->psq_lock); 839 840 if (psq_empty) 841 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 842} 843 844void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 845{ 846 bool mcastq_empty = false; 847 struct sk_buff *skb; 848 struct ath6kl *ar = vif->ar; 849 850 /* 851 * If there are no associated STAs, ignore the DTIM expiry event. 852 * There can be potential race conditions where the last associated 853 * STA may disconnect & before the host could clear the 'Indicate 854 * DTIM' request to the firmware, the firmware would have just 855 * indicated a DTIM expiry event. The race is between 'clear DTIM 856 * expiry cmd' going from the host to the firmware & the DTIM 857 * expiry event happening from the firmware to the host. 858 */ 859 if (!ar->sta_list_index) 860 return; 861 862 spin_lock_bh(&ar->mcastpsq_lock); 863 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 864 spin_unlock_bh(&ar->mcastpsq_lock); 865 866 if (mcastq_empty) 867 return; 868 869 /* set the STA flag to dtim_expired for the frame to go out */ 870 set_bit(DTIM_EXPIRED, &vif->flags); 871 872 spin_lock_bh(&ar->mcastpsq_lock); 873 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 874 spin_unlock_bh(&ar->mcastpsq_lock); 875 876 ath6kl_data_tx(skb, vif->ndev); 877 878 spin_lock_bh(&ar->mcastpsq_lock); 879 } 880 spin_unlock_bh(&ar->mcastpsq_lock); 881 882 clear_bit(DTIM_EXPIRED, &vif->flags); 883 884 /* clear the LSB of the BitMapCtl field of the TIM IE */ 885 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 886} 887 888void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 889 u8 assoc_resp_len, u8 *assoc_info, 890 u16 prot_reason_status) 891{ 892 struct ath6kl *ar = vif->ar; 893 894 if (vif->nw_type == AP_NETWORK) { 895 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 896 return; 897 898 /* if no more associated STAs, empty the mcast PS q */ 899 if (ar->sta_list_index == 0) { 900 spin_lock_bh(&ar->mcastpsq_lock); 901 skb_queue_purge(&ar->mcastpsq); 902 spin_unlock_bh(&ar->mcastpsq_lock); 903 904 /* clear the LSB of the TIM IE's BitMapCtl field */ 905 if (test_bit(WMI_READY, &ar->flag)) 906 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 907 MCAST_AID, 0); 908 } 909 910 if (!is_broadcast_ether_addr(bssid)) { 911 /* send event to application */ 912 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 913 } 914 915 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 916 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 917 clear_bit(CONNECTED, &vif->flags); 918 } 919 return; 920 } 921 922 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 923 assoc_resp_len, assoc_info, 924 prot_reason_status); 925 926 aggr_reset_state(vif->aggr_cntxt); 927 928 del_timer(&vif->disconnect_timer); 929 930 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 931 932 /* 933 * If the event is due to disconnect cmd from the host, only they 934 * the target would stop trying to connect. Under any other 935 * condition, target would keep trying to connect. 936 */ 937 if (reason == DISCONNECT_CMD) { 938 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 939 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 940 NONE_BSS_FILTER, 0); 941 } else { 942 set_bit(CONNECT_PEND, &vif->flags); 943 if (((reason == ASSOC_FAILED) && 944 (prot_reason_status == 0x11)) || 945 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 946 && (vif->reconnect_flag == 1))) { 947 set_bit(CONNECTED, &vif->flags); 948 return; 949 } 950 } 951 952 /* update connect & link status atomically */ 953 spin_lock_bh(&vif->if_lock); 954 clear_bit(CONNECTED, &vif->flags); 955 netif_carrier_off(vif->ndev); 956 spin_unlock_bh(&vif->if_lock); 957 958 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 959 vif->reconnect_flag = 0; 960 961 if (reason != CSERV_DISCONNECT) 962 ar->user_key_ctrl = 0; 963 964 netif_stop_queue(vif->ndev); 965 memset(vif->bssid, 0, sizeof(vif->bssid)); 966 vif->bss_ch = 0; 967 968 ath6kl_tx_data_cleanup(ar); 969} 970 971struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 972{ 973 struct ath6kl_vif *vif; 974 975 spin_lock_bh(&ar->list_lock); 976 if (list_empty(&ar->vif_list)) { 977 spin_unlock_bh(&ar->list_lock); 978 return NULL; 979 } 980 981 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 982 983 spin_unlock_bh(&ar->list_lock); 984 985 return vif; 986} 987 988static int ath6kl_open(struct net_device *dev) 989{ 990 struct ath6kl_vif *vif = netdev_priv(dev); 991 992 set_bit(WLAN_ENABLED, &vif->flags); 993 994 if (test_bit(CONNECTED, &vif->flags)) { 995 netif_carrier_on(dev); 996 netif_wake_queue(dev); 997 } else 998 netif_carrier_off(dev); 999 1000 return 0; 1001} 1002 1003static int ath6kl_close(struct net_device *dev) 1004{ 1005 struct ath6kl_vif *vif = netdev_priv(dev); 1006 1007 netif_stop_queue(dev); 1008 1009 ath6kl_cfg80211_stop(vif); 1010 1011 clear_bit(WLAN_ENABLED, &vif->flags); 1012 1013 return 0; 1014} 1015 1016static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1017{ 1018 struct ath6kl_vif *vif = netdev_priv(dev); 1019 1020 return &vif->net_stats; 1021} 1022 1023static int ath6kl_set_features(struct net_device *dev, u32 features) 1024{ 1025 struct ath6kl_vif *vif = netdev_priv(dev); 1026 struct ath6kl *ar = vif->ar; 1027 int err = 0; 1028 1029 if ((features & NETIF_F_RXCSUM) && 1030 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1031 ar->rx_meta_ver = WMI_META_VERSION_2; 1032 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1033 vif->fw_vif_idx, 1034 ar->rx_meta_ver, 0, 0); 1035 if (err) { 1036 dev->features = features & ~NETIF_F_RXCSUM; 1037 return err; 1038 } 1039 } else if (!(features & NETIF_F_RXCSUM) && 1040 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1041 ar->rx_meta_ver = 0; 1042 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1043 vif->fw_vif_idx, 1044 ar->rx_meta_ver, 0, 0); 1045 if (err) { 1046 dev->features = features | NETIF_F_RXCSUM; 1047 return err; 1048 } 1049 1050 } 1051 1052 return err; 1053} 1054 1055static struct net_device_ops ath6kl_netdev_ops = { 1056 .ndo_open = ath6kl_open, 1057 .ndo_stop = ath6kl_close, 1058 .ndo_start_xmit = ath6kl_data_tx, 1059 .ndo_get_stats = ath6kl_get_stats, 1060 .ndo_set_features = ath6kl_set_features, 1061}; 1062 1063void init_netdev(struct net_device *dev) 1064{ 1065 dev->netdev_ops = &ath6kl_netdev_ops; 1066 dev->destructor = free_netdev; 1067 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1068 1069 dev->needed_headroom = ETH_HLEN; 1070 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1071 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1072 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1073 1074 return; 1075} 1076