main.c revision d6f802612af55cc1b3699d119a04dfa2fc8812a0
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 size_t ielen, u8 keymgmt, u8 ucipher, u8 auth, 57 u8 apsd_info) 58{ 59 struct ath6kl_sta *sta; 60 u8 free_slot; 61 62 free_slot = aid - 1; 63 64 sta = &ar->sta_list[free_slot]; 65 memcpy(sta->mac, mac, ETH_ALEN); 66 if (ielen <= ATH6KL_MAX_IE) 67 memcpy(sta->wpa_ie, wpaie, ielen); 68 sta->aid = aid; 69 sta->keymgmt = keymgmt; 70 sta->ucipher = ucipher; 71 sta->auth = auth; 72 sta->apsd_info = apsd_info; 73 74 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 75 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 76} 77 78static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 79{ 80 struct ath6kl_sta *sta = &ar->sta_list[i]; 81 82 /* empty the queued pkts in the PS queue if any */ 83 spin_lock_bh(&sta->psq_lock); 84 skb_queue_purge(&sta->psq); 85 skb_queue_purge(&sta->apsdq); 86 spin_unlock_bh(&sta->psq_lock); 87 88 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 89 sizeof(struct wmi_per_sta_stat)); 90 memset(sta->mac, 0, ETH_ALEN); 91 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 92 sta->aid = 0; 93 sta->sta_flags = 0; 94 95 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 96 97} 98 99static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 100{ 101 u8 i, removed = 0; 102 103 if (is_zero_ether_addr(mac)) 104 return removed; 105 106 if (is_broadcast_ether_addr(mac)) { 107 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 108 109 for (i = 0; i < AP_MAX_NUM_STA; i++) { 110 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 111 ath6kl_sta_cleanup(ar, i); 112 removed = 1; 113 } 114 } 115 } else { 116 for (i = 0; i < AP_MAX_NUM_STA; i++) { 117 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 118 ath6kl_dbg(ATH6KL_DBG_TRC, 119 "deleting station %pM aid=%d reason=%d\n", 120 mac, ar->sta_list[i].aid, reason); 121 ath6kl_sta_cleanup(ar, i); 122 removed = 1; 123 break; 124 } 125 } 126 } 127 128 return removed; 129} 130 131enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 132{ 133 struct ath6kl *ar = devt; 134 return ar->ac2ep_map[ac]; 135} 136 137struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 138{ 139 struct ath6kl_cookie *cookie; 140 141 cookie = ar->cookie_list; 142 if (cookie != NULL) { 143 ar->cookie_list = cookie->arc_list_next; 144 ar->cookie_count--; 145 } 146 147 return cookie; 148} 149 150void ath6kl_cookie_init(struct ath6kl *ar) 151{ 152 u32 i; 153 154 ar->cookie_list = NULL; 155 ar->cookie_count = 0; 156 157 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 158 159 for (i = 0; i < MAX_COOKIE_NUM; i++) 160 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 161} 162 163void ath6kl_cookie_cleanup(struct ath6kl *ar) 164{ 165 ar->cookie_list = NULL; 166 ar->cookie_count = 0; 167} 168 169void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 170{ 171 /* Insert first */ 172 173 if (!ar || !cookie) 174 return; 175 176 cookie->arc_list_next = ar->cookie_list; 177 ar->cookie_list = cookie; 178 ar->cookie_count++; 179} 180 181/* 182 * Read from the hardware through its diagnostic window. No cooperation 183 * from the firmware is required for this. 184 */ 185int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 186{ 187 int ret; 188 189 ret = ath6kl_hif_diag_read32(ar, address, value); 190 if (ret) { 191 ath6kl_warn("failed to read32 through diagnose window: %d\n", 192 ret); 193 return ret; 194 } 195 196 return 0; 197} 198 199/* 200 * Write to the ATH6KL through its diagnostic window. No cooperation from 201 * the Target is required for this. 202 */ 203int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 204{ 205 int ret; 206 207 ret = ath6kl_hif_diag_write32(ar, address, value); 208 209 if (ret) { 210 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 211 address, value); 212 return ret; 213 } 214 215 return 0; 216} 217 218int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 219{ 220 u32 count, *buf = data; 221 int ret; 222 223 if (WARN_ON(length % 4)) 224 return -EINVAL; 225 226 for (count = 0; count < length / 4; count++, address += 4) { 227 ret = ath6kl_diag_read32(ar, address, &buf[count]); 228 if (ret) 229 return ret; 230 } 231 232 return 0; 233} 234 235int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 236{ 237 u32 count; 238 __le32 *buf = data; 239 int ret; 240 241 if (WARN_ON(length % 4)) 242 return -EINVAL; 243 244 for (count = 0; count < length / 4; count++, address += 4) { 245 ret = ath6kl_diag_write32(ar, address, buf[count]); 246 if (ret) 247 return ret; 248 } 249 250 return 0; 251} 252 253int ath6kl_read_fwlogs(struct ath6kl *ar) 254{ 255 struct ath6kl_dbglog_hdr debug_hdr; 256 struct ath6kl_dbglog_buf debug_buf; 257 u32 address, length, dropped, firstbuf, debug_hdr_addr; 258 int ret, loop; 259 u8 *buf; 260 261 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 262 if (!buf) 263 return -ENOMEM; 264 265 address = TARG_VTOP(ar->target_type, 266 ath6kl_get_hi_item_addr(ar, 267 HI_ITEM(hi_dbglog_hdr))); 268 269 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 270 if (ret) 271 goto out; 272 273 /* Get the contents of the ring buffer */ 274 if (debug_hdr_addr == 0) { 275 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 276 ret = -EINVAL; 277 goto out; 278 } 279 280 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 281 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 282 283 address = TARG_VTOP(ar->target_type, 284 le32_to_cpu(debug_hdr.dbuf_addr)); 285 firstbuf = address; 286 dropped = le32_to_cpu(debug_hdr.dropped); 287 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 288 289 loop = 100; 290 291 do { 292 address = TARG_VTOP(ar->target_type, 293 le32_to_cpu(debug_buf.buffer_addr)); 294 length = le32_to_cpu(debug_buf.length); 295 296 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 297 le32_to_cpu(debug_buf.bufsize))) { 298 length = ALIGN(length, 4); 299 300 ret = ath6kl_diag_read(ar, address, 301 buf, length); 302 if (ret) 303 goto out; 304 305 ath6kl_debug_fwlog_event(ar, buf, length); 306 } 307 308 address = TARG_VTOP(ar->target_type, 309 le32_to_cpu(debug_buf.next)); 310 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 311 if (ret) 312 goto out; 313 314 loop--; 315 316 if (WARN_ON(loop == 0)) { 317 ret = -ETIMEDOUT; 318 goto out; 319 } 320 } while (address != firstbuf); 321 322out: 323 kfree(buf); 324 325 return ret; 326} 327 328/* FIXME: move to a better place, target.h? */ 329#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 330#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 331 332void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 333 bool wait_fot_compltn, bool cold_reset) 334{ 335 int status = 0; 336 u32 address; 337 __le32 data; 338 339 if (target_type != TARGET_TYPE_AR6003 && 340 target_type != TARGET_TYPE_AR6004) 341 return; 342 343 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 344 cpu_to_le32(RESET_CONTROL_MBOX_RST); 345 346 switch (target_type) { 347 case TARGET_TYPE_AR6003: 348 address = AR6003_RESET_CONTROL_ADDRESS; 349 break; 350 case TARGET_TYPE_AR6004: 351 address = AR6004_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 = 0; 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, u8 apsd_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, apsd_info); 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 ar->listen_intvl_b = listen_int; 592 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 593 0, ar->listen_intvl_b); 594 } 595 596 netif_wake_queue(vif->ndev); 597 598 /* Update connect & link status atomically */ 599 spin_lock_bh(&vif->if_lock); 600 set_bit(CONNECTED, &vif->flags); 601 clear_bit(CONNECT_PEND, &vif->flags); 602 netif_carrier_on(vif->ndev); 603 spin_unlock_bh(&vif->if_lock); 604 605 aggr_reset_state(vif->aggr_cntxt); 606 vif->reconnect_flag = 0; 607 608 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 609 memset(ar->node_map, 0, sizeof(ar->node_map)); 610 ar->node_num = 0; 611 ar->next_ep_id = ENDPOINT_2; 612 } 613 614 if (!ar->usr_bss_filter) { 615 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 616 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 617 CURRENT_BSS_FILTER, 0); 618 } 619} 620 621void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 622{ 623 struct ath6kl_sta *sta; 624 struct ath6kl *ar = vif->ar; 625 u8 tsc[6]; 626 627 /* 628 * For AP case, keyid will have aid of STA which sent pkt with 629 * MIC error. Use this aid to get MAC & send it to hostapd. 630 */ 631 if (vif->nw_type == AP_NETWORK) { 632 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 633 if (!sta) 634 return; 635 636 ath6kl_dbg(ATH6KL_DBG_TRC, 637 "ap tkip mic error received from aid=%d\n", keyid); 638 639 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 640 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 641 NL80211_KEYTYPE_PAIRWISE, keyid, 642 tsc, GFP_KERNEL); 643 } else 644 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 645 646} 647 648static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 649{ 650 struct wmi_target_stats *tgt_stats = 651 (struct wmi_target_stats *) ptr; 652 struct ath6kl *ar = vif->ar; 653 struct target_stats *stats = &vif->target_stats; 654 struct tkip_ccmp_stats *ccmp_stats; 655 u8 ac; 656 657 if (len < sizeof(*tgt_stats)) 658 return; 659 660 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 661 662 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 663 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 664 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 665 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 666 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 667 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 668 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 669 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 670 stats->tx_rts_success_cnt += 671 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 672 673 for (ac = 0; ac < WMM_NUM_AC; ac++) 674 stats->tx_pkt_per_ac[ac] += 675 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 676 677 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 678 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 679 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 680 stats->tx_mult_retry_cnt += 681 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 682 stats->tx_rts_fail_cnt += 683 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 684 stats->tx_ucast_rate = 685 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 686 687 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 688 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 689 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 690 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 691 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 692 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 693 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 694 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 695 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 696 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 697 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 698 stats->rx_key_cache_miss += 699 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 700 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 701 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 702 stats->rx_ucast_rate = 703 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 704 705 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 706 707 stats->tkip_local_mic_fail += 708 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 709 stats->tkip_cnter_measures_invoked += 710 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 711 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 712 713 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 714 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 715 716 stats->pwr_save_fail_cnt += 717 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 718 stats->noise_floor_calib = 719 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 720 721 stats->cs_bmiss_cnt += 722 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 723 stats->cs_low_rssi_cnt += 724 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 725 stats->cs_connect_cnt += 726 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 727 stats->cs_discon_cnt += 728 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 729 730 stats->cs_ave_beacon_rssi = 731 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 732 733 stats->cs_last_roam_msec = 734 tgt_stats->cserv_stats.cs_last_roam_msec; 735 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 736 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 737 738 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 739 740 stats->wow_pkt_dropped += 741 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 742 stats->wow_host_pkt_wakeups += 743 tgt_stats->wow_stats.wow_host_pkt_wakeups; 744 stats->wow_host_evt_wakeups += 745 tgt_stats->wow_stats.wow_host_evt_wakeups; 746 stats->wow_evt_discarded += 747 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 748 749 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 750 clear_bit(STATS_UPDATE_PEND, &vif->flags); 751 wake_up(&ar->event_wq); 752 } 753} 754 755static void ath6kl_add_le32(__le32 *var, __le32 val) 756{ 757 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 758} 759 760void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 761{ 762 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 763 struct ath6kl *ar = vif->ar; 764 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 765 struct wmi_per_sta_stat *st_ap, *st_p; 766 u8 ac; 767 768 if (vif->nw_type == AP_NETWORK) { 769 if (len < sizeof(*p)) 770 return; 771 772 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 773 st_ap = &ap->sta[ac]; 774 st_p = &p->sta[ac]; 775 776 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 777 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 778 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 779 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 780 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 781 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 782 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 783 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 784 } 785 786 } else { 787 ath6kl_update_target_stats(vif, ptr, len); 788 } 789} 790 791void ath6kl_wakeup_event(void *dev) 792{ 793 struct ath6kl *ar = (struct ath6kl *) dev; 794 795 wake_up(&ar->event_wq); 796} 797 798void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 799{ 800 struct ath6kl *ar = (struct ath6kl *) devt; 801 802 ar->tx_pwr = tx_pwr; 803 wake_up(&ar->event_wq); 804} 805 806void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 807{ 808 struct ath6kl_sta *conn; 809 struct sk_buff *skb; 810 bool psq_empty = false; 811 struct ath6kl *ar = vif->ar; 812 813 conn = ath6kl_find_sta_by_aid(ar, aid); 814 815 if (!conn) 816 return; 817 /* 818 * Send out a packet queued on ps queue. When the ps queue 819 * becomes empty update the PVB for this station. 820 */ 821 spin_lock_bh(&conn->psq_lock); 822 psq_empty = skb_queue_empty(&conn->psq); 823 spin_unlock_bh(&conn->psq_lock); 824 825 if (psq_empty) 826 /* TODO: Send out a NULL data frame */ 827 return; 828 829 spin_lock_bh(&conn->psq_lock); 830 skb = skb_dequeue(&conn->psq); 831 spin_unlock_bh(&conn->psq_lock); 832 833 conn->sta_flags |= STA_PS_POLLED; 834 ath6kl_data_tx(skb, vif->ndev); 835 conn->sta_flags &= ~STA_PS_POLLED; 836 837 spin_lock_bh(&conn->psq_lock); 838 psq_empty = skb_queue_empty(&conn->psq); 839 spin_unlock_bh(&conn->psq_lock); 840 841 if (psq_empty) 842 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 843} 844 845void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 846{ 847 bool mcastq_empty = false; 848 struct sk_buff *skb; 849 struct ath6kl *ar = vif->ar; 850 851 /* 852 * If there are no associated STAs, ignore the DTIM expiry event. 853 * There can be potential race conditions where the last associated 854 * STA may disconnect & before the host could clear the 'Indicate 855 * DTIM' request to the firmware, the firmware would have just 856 * indicated a DTIM expiry event. The race is between 'clear DTIM 857 * expiry cmd' going from the host to the firmware & the DTIM 858 * expiry event happening from the firmware to the host. 859 */ 860 if (!ar->sta_list_index) 861 return; 862 863 spin_lock_bh(&ar->mcastpsq_lock); 864 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 865 spin_unlock_bh(&ar->mcastpsq_lock); 866 867 if (mcastq_empty) 868 return; 869 870 /* set the STA flag to dtim_expired for the frame to go out */ 871 set_bit(DTIM_EXPIRED, &vif->flags); 872 873 spin_lock_bh(&ar->mcastpsq_lock); 874 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 875 spin_unlock_bh(&ar->mcastpsq_lock); 876 877 ath6kl_data_tx(skb, vif->ndev); 878 879 spin_lock_bh(&ar->mcastpsq_lock); 880 } 881 spin_unlock_bh(&ar->mcastpsq_lock); 882 883 clear_bit(DTIM_EXPIRED, &vif->flags); 884 885 /* clear the LSB of the BitMapCtl field of the TIM IE */ 886 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 887} 888 889void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 890 u8 assoc_resp_len, u8 *assoc_info, 891 u16 prot_reason_status) 892{ 893 struct ath6kl *ar = vif->ar; 894 895 if (vif->nw_type == AP_NETWORK) { 896 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 897 return; 898 899 /* if no more associated STAs, empty the mcast PS q */ 900 if (ar->sta_list_index == 0) { 901 spin_lock_bh(&ar->mcastpsq_lock); 902 skb_queue_purge(&ar->mcastpsq); 903 spin_unlock_bh(&ar->mcastpsq_lock); 904 905 /* clear the LSB of the TIM IE's BitMapCtl field */ 906 if (test_bit(WMI_READY, &ar->flag)) 907 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 908 MCAST_AID, 0); 909 } 910 911 if (!is_broadcast_ether_addr(bssid)) { 912 /* send event to application */ 913 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 914 } 915 916 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 917 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 918 clear_bit(CONNECTED, &vif->flags); 919 } 920 return; 921 } 922 923 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 924 assoc_resp_len, assoc_info, 925 prot_reason_status); 926 927 aggr_reset_state(vif->aggr_cntxt); 928 929 del_timer(&vif->disconnect_timer); 930 931 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 932 933 /* 934 * If the event is due to disconnect cmd from the host, only they 935 * the target would stop trying to connect. Under any other 936 * condition, target would keep trying to connect. 937 */ 938 if (reason == DISCONNECT_CMD) { 939 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 940 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 941 NONE_BSS_FILTER, 0); 942 } else { 943 set_bit(CONNECT_PEND, &vif->flags); 944 if (((reason == ASSOC_FAILED) && 945 (prot_reason_status == 0x11)) || 946 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 947 && (vif->reconnect_flag == 1))) { 948 set_bit(CONNECTED, &vif->flags); 949 return; 950 } 951 } 952 953 /* update connect & link status atomically */ 954 spin_lock_bh(&vif->if_lock); 955 clear_bit(CONNECTED, &vif->flags); 956 netif_carrier_off(vif->ndev); 957 spin_unlock_bh(&vif->if_lock); 958 959 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 960 vif->reconnect_flag = 0; 961 962 if (reason != CSERV_DISCONNECT) 963 ar->user_key_ctrl = 0; 964 965 netif_stop_queue(vif->ndev); 966 memset(vif->bssid, 0, sizeof(vif->bssid)); 967 vif->bss_ch = 0; 968 969 ath6kl_tx_data_cleanup(ar); 970} 971 972struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 973{ 974 struct ath6kl_vif *vif; 975 976 spin_lock_bh(&ar->list_lock); 977 if (list_empty(&ar->vif_list)) { 978 spin_unlock_bh(&ar->list_lock); 979 return NULL; 980 } 981 982 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 983 984 spin_unlock_bh(&ar->list_lock); 985 986 return vif; 987} 988 989static int ath6kl_open(struct net_device *dev) 990{ 991 struct ath6kl_vif *vif = netdev_priv(dev); 992 993 set_bit(WLAN_ENABLED, &vif->flags); 994 995 if (test_bit(CONNECTED, &vif->flags)) { 996 netif_carrier_on(dev); 997 netif_wake_queue(dev); 998 } else 999 netif_carrier_off(dev); 1000 1001 return 0; 1002} 1003 1004static int ath6kl_close(struct net_device *dev) 1005{ 1006 struct ath6kl_vif *vif = netdev_priv(dev); 1007 1008 netif_stop_queue(dev); 1009 1010 ath6kl_cfg80211_stop(vif); 1011 1012 clear_bit(WLAN_ENABLED, &vif->flags); 1013 1014 return 0; 1015} 1016 1017static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1018{ 1019 struct ath6kl_vif *vif = netdev_priv(dev); 1020 1021 return &vif->net_stats; 1022} 1023 1024static int ath6kl_set_features(struct net_device *dev, 1025 netdev_features_t features) 1026{ 1027 struct ath6kl_vif *vif = netdev_priv(dev); 1028 struct ath6kl *ar = vif->ar; 1029 int err = 0; 1030 1031 if ((features & NETIF_F_RXCSUM) && 1032 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1033 ar->rx_meta_ver = WMI_META_VERSION_2; 1034 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1035 vif->fw_vif_idx, 1036 ar->rx_meta_ver, 0, 0); 1037 if (err) { 1038 dev->features = features & ~NETIF_F_RXCSUM; 1039 return err; 1040 } 1041 } else if (!(features & NETIF_F_RXCSUM) && 1042 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1043 ar->rx_meta_ver = 0; 1044 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1045 vif->fw_vif_idx, 1046 ar->rx_meta_ver, 0, 0); 1047 if (err) { 1048 dev->features = features | NETIF_F_RXCSUM; 1049 return err; 1050 } 1051 1052 } 1053 1054 return err; 1055} 1056 1057static void ath6kl_set_multicast_list(struct net_device *ndev) 1058{ 1059 struct ath6kl_vif *vif = netdev_priv(ndev); 1060 bool mc_all_on = false, mc_all_off = false; 1061 int mc_count = netdev_mc_count(ndev); 1062 struct netdev_hw_addr *ha; 1063 bool found; 1064 struct ath6kl_mc_filter *mc_filter, *tmp; 1065 struct list_head mc_filter_new; 1066 int ret; 1067 1068 if (!test_bit(WMI_READY, &vif->ar->flag) || 1069 !test_bit(WLAN_ENABLED, &vif->flags)) 1070 return; 1071 1072 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1073 !!(ndev->flags & IFF_ALLMULTI) || 1074 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1075 1076 mc_all_off = !(ndev->flags & IFF_MULTICAST) || mc_count == 0; 1077 1078 if (mc_all_on || mc_all_off) { 1079 /* Enable/disable all multicast */ 1080 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast filter\n", 1081 mc_all_on ? "enabling" : "disabling"); 1082 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1083 mc_all_on); 1084 if (ret) 1085 ath6kl_warn("Failed to %s multicast receive\n", 1086 mc_all_on ? "enable" : "disable"); 1087 return; 1088 } 1089 1090 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1091 found = false; 1092 netdev_for_each_mc_addr(ha, ndev) { 1093 if (memcmp(ha->addr, mc_filter->hw_addr, 1094 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1095 found = true; 1096 break; 1097 } 1098 } 1099 1100 if (!found) { 1101 /* 1102 * Delete the filter which was previously set 1103 * but not in the new request. 1104 */ 1105 ath6kl_dbg(ATH6KL_DBG_TRC, 1106 "Removing %pM from multicast filter\n", 1107 mc_filter->hw_addr); 1108 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1109 vif->fw_vif_idx, mc_filter->hw_addr, 1110 false); 1111 if (ret) { 1112 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1113 mc_filter->hw_addr); 1114 return; 1115 } 1116 1117 list_del(&mc_filter->list); 1118 kfree(mc_filter); 1119 } 1120 } 1121 1122 INIT_LIST_HEAD(&mc_filter_new); 1123 1124 netdev_for_each_mc_addr(ha, ndev) { 1125 found = false; 1126 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1127 if (memcmp(ha->addr, mc_filter->hw_addr, 1128 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1129 found = true; 1130 break; 1131 } 1132 } 1133 1134 if (!found) { 1135 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1136 GFP_ATOMIC); 1137 if (!mc_filter) { 1138 WARN_ON(1); 1139 goto out; 1140 } 1141 1142 memcpy(mc_filter->hw_addr, ha->addr, 1143 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1144 /* Set the multicast filter */ 1145 ath6kl_dbg(ATH6KL_DBG_TRC, 1146 "Adding %pM to multicast filter list\n", 1147 mc_filter->hw_addr); 1148 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1149 vif->fw_vif_idx, mc_filter->hw_addr, 1150 true); 1151 if (ret) { 1152 ath6kl_warn("Failed to add multicast filter :%pM\n", 1153 mc_filter->hw_addr); 1154 kfree(mc_filter); 1155 goto out; 1156 } 1157 1158 list_add_tail(&mc_filter->list, &mc_filter_new); 1159 } 1160 } 1161 1162out: 1163 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1164} 1165 1166static const struct net_device_ops ath6kl_netdev_ops = { 1167 .ndo_open = ath6kl_open, 1168 .ndo_stop = ath6kl_close, 1169 .ndo_start_xmit = ath6kl_data_tx, 1170 .ndo_get_stats = ath6kl_get_stats, 1171 .ndo_set_features = ath6kl_set_features, 1172 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1173}; 1174 1175void init_netdev(struct net_device *dev) 1176{ 1177 dev->netdev_ops = &ath6kl_netdev_ops; 1178 dev->destructor = free_netdev; 1179 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1180 1181 dev->needed_headroom = ETH_HLEN; 1182 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1183 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1184 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1185 1186 return; 1187} 1188