main.c revision c86515412f0c364f2d45029b45d5909614087af3
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_vif *vif, u8 *mac, u16 aid, 56 u8 *wpaie, size_t ielen, u8 keymgmt, 57 u8 ucipher, u8 auth, u8 apsd_info) 58{ 59 struct ath6kl *ar = vif->ar; 60 struct ath6kl_sta *sta; 61 u8 free_slot; 62 63 free_slot = aid - 1; 64 65 sta = &ar->sta_list[free_slot]; 66 memcpy(sta->mac, mac, ETH_ALEN); 67 if (ielen <= ATH6KL_MAX_IE) 68 memcpy(sta->wpa_ie, wpaie, ielen); 69 sta->aid = aid; 70 sta->keymgmt = keymgmt; 71 sta->ucipher = ucipher; 72 sta->auth = auth; 73 sta->apsd_info = apsd_info; 74 75 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 76 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 77 aggr_conn_init(vif, vif->aggr_cntxt, sta->aggr_conn); 78} 79 80static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 81{ 82 struct ath6kl_sta *sta = &ar->sta_list[i]; 83 84 /* empty the queued pkts in the PS queue if any */ 85 spin_lock_bh(&sta->psq_lock); 86 skb_queue_purge(&sta->psq); 87 skb_queue_purge(&sta->apsdq); 88 spin_unlock_bh(&sta->psq_lock); 89 90 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 91 sizeof(struct wmi_per_sta_stat)); 92 memset(sta->mac, 0, ETH_ALEN); 93 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 94 sta->aid = 0; 95 sta->sta_flags = 0; 96 97 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 98 aggr_reset_state(sta->aggr_conn); 99} 100 101static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 102{ 103 u8 i, removed = 0; 104 105 if (is_zero_ether_addr(mac)) 106 return removed; 107 108 if (is_broadcast_ether_addr(mac)) { 109 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 110 111 for (i = 0; i < AP_MAX_NUM_STA; i++) { 112 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 113 ath6kl_sta_cleanup(ar, i); 114 removed = 1; 115 } 116 } 117 } else { 118 for (i = 0; i < AP_MAX_NUM_STA; i++) { 119 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 120 ath6kl_dbg(ATH6KL_DBG_TRC, 121 "deleting station %pM aid=%d reason=%d\n", 122 mac, ar->sta_list[i].aid, reason); 123 ath6kl_sta_cleanup(ar, i); 124 removed = 1; 125 break; 126 } 127 } 128 } 129 130 return removed; 131} 132 133enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 134{ 135 struct ath6kl *ar = devt; 136 return ar->ac2ep_map[ac]; 137} 138 139struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 140{ 141 struct ath6kl_cookie *cookie; 142 143 cookie = ar->cookie_list; 144 if (cookie != NULL) { 145 ar->cookie_list = cookie->arc_list_next; 146 ar->cookie_count--; 147 } 148 149 return cookie; 150} 151 152void ath6kl_cookie_init(struct ath6kl *ar) 153{ 154 u32 i; 155 156 ar->cookie_list = NULL; 157 ar->cookie_count = 0; 158 159 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 160 161 for (i = 0; i < MAX_COOKIE_NUM; i++) 162 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 163} 164 165void ath6kl_cookie_cleanup(struct ath6kl *ar) 166{ 167 ar->cookie_list = NULL; 168 ar->cookie_count = 0; 169} 170 171void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 172{ 173 /* Insert first */ 174 175 if (!ar || !cookie) 176 return; 177 178 cookie->arc_list_next = ar->cookie_list; 179 ar->cookie_list = cookie; 180 ar->cookie_count++; 181} 182 183/* 184 * Read from the hardware through its diagnostic window. No cooperation 185 * from the firmware is required for this. 186 */ 187int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 188{ 189 int ret; 190 191 ret = ath6kl_hif_diag_read32(ar, address, value); 192 if (ret) { 193 ath6kl_warn("failed to read32 through diagnose window: %d\n", 194 ret); 195 return ret; 196 } 197 198 return 0; 199} 200 201/* 202 * Write to the ATH6KL through its diagnostic window. No cooperation from 203 * the Target is required for this. 204 */ 205int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 206{ 207 int ret; 208 209 ret = ath6kl_hif_diag_write32(ar, address, value); 210 211 if (ret) { 212 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 213 address, value); 214 return ret; 215 } 216 217 return 0; 218} 219 220int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 221{ 222 u32 count, *buf = data; 223 int ret; 224 225 if (WARN_ON(length % 4)) 226 return -EINVAL; 227 228 for (count = 0; count < length / 4; count++, address += 4) { 229 ret = ath6kl_diag_read32(ar, address, &buf[count]); 230 if (ret) 231 return ret; 232 } 233 234 return 0; 235} 236 237int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 238{ 239 u32 count; 240 __le32 *buf = data; 241 int ret; 242 243 if (WARN_ON(length % 4)) 244 return -EINVAL; 245 246 for (count = 0; count < length / 4; count++, address += 4) { 247 ret = ath6kl_diag_write32(ar, address, buf[count]); 248 if (ret) 249 return ret; 250 } 251 252 return 0; 253} 254 255int ath6kl_read_fwlogs(struct ath6kl *ar) 256{ 257 struct ath6kl_dbglog_hdr debug_hdr; 258 struct ath6kl_dbglog_buf debug_buf; 259 u32 address, length, dropped, firstbuf, debug_hdr_addr; 260 int ret, loop; 261 u8 *buf; 262 263 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 264 if (!buf) 265 return -ENOMEM; 266 267 address = TARG_VTOP(ar->target_type, 268 ath6kl_get_hi_item_addr(ar, 269 HI_ITEM(hi_dbglog_hdr))); 270 271 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 272 if (ret) 273 goto out; 274 275 /* Get the contents of the ring buffer */ 276 if (debug_hdr_addr == 0) { 277 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 278 ret = -EINVAL; 279 goto out; 280 } 281 282 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 283 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 284 285 address = TARG_VTOP(ar->target_type, 286 le32_to_cpu(debug_hdr.dbuf_addr)); 287 firstbuf = address; 288 dropped = le32_to_cpu(debug_hdr.dropped); 289 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 290 291 loop = 100; 292 293 do { 294 address = TARG_VTOP(ar->target_type, 295 le32_to_cpu(debug_buf.buffer_addr)); 296 length = le32_to_cpu(debug_buf.length); 297 298 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 299 le32_to_cpu(debug_buf.bufsize))) { 300 length = ALIGN(length, 4); 301 302 ret = ath6kl_diag_read(ar, address, 303 buf, length); 304 if (ret) 305 goto out; 306 307 ath6kl_debug_fwlog_event(ar, buf, length); 308 } 309 310 address = TARG_VTOP(ar->target_type, 311 le32_to_cpu(debug_buf.next)); 312 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 313 if (ret) 314 goto out; 315 316 loop--; 317 318 if (WARN_ON(loop == 0)) { 319 ret = -ETIMEDOUT; 320 goto out; 321 } 322 } while (address != firstbuf); 323 324out: 325 kfree(buf); 326 327 return ret; 328} 329 330/* FIXME: move to a better place, target.h? */ 331#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 332#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 333 334void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 335 bool wait_fot_compltn, bool cold_reset) 336{ 337 int status = 0; 338 u32 address; 339 __le32 data; 340 341 if (target_type != TARGET_TYPE_AR6003 && 342 target_type != TARGET_TYPE_AR6004) 343 return; 344 345 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 346 cpu_to_le32(RESET_CONTROL_MBOX_RST); 347 348 switch (target_type) { 349 case TARGET_TYPE_AR6003: 350 address = AR6003_RESET_CONTROL_ADDRESS; 351 break; 352 case TARGET_TYPE_AR6004: 353 address = AR6004_RESET_CONTROL_ADDRESS; 354 break; 355 } 356 357 status = ath6kl_diag_write32(ar, address, data); 358 359 if (status) 360 ath6kl_err("failed to reset target\n"); 361} 362 363static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 364{ 365 u8 index; 366 u8 keyusage; 367 368 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) { 369 if (vif->wep_key_list[index].key_len) { 370 keyusage = GROUP_USAGE; 371 if (index == vif->def_txkey_index) 372 keyusage |= TX_USAGE; 373 374 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 375 index, 376 WEP_CRYPT, 377 keyusage, 378 vif->wep_key_list[index].key_len, 379 NULL, 0, 380 vif->wep_key_list[index].key, 381 KEY_OP_INIT_VAL, NULL, 382 NO_SYNC_WMIFLAG); 383 } 384 } 385} 386 387void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 388{ 389 struct ath6kl *ar = vif->ar; 390 struct ath6kl_req_key *ik; 391 int res; 392 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 393 394 ik = &ar->ap_mode_bkey; 395 396 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 397 398 switch (vif->auth_mode) { 399 case NONE_AUTH: 400 if (vif->prwise_crypto == WEP_CRYPT) 401 ath6kl_install_static_wep_keys(vif); 402 if (!ik->valid || ik->key_type != WAPI_CRYPT) 403 break; 404 /* for WAPI, we need to set the delayed group key, continue: */ 405 case WPA_PSK_AUTH: 406 case WPA2_PSK_AUTH: 407 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 408 if (!ik->valid) 409 break; 410 411 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 412 "the initial group key for AP mode\n"); 413 memset(key_rsc, 0, sizeof(key_rsc)); 414 res = ath6kl_wmi_addkey_cmd( 415 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 416 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN, 417 ik->key, 418 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 419 if (res) { 420 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 421 "addkey failed: %d\n", res); 422 } 423 break; 424 } 425 426 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 427 set_bit(CONNECTED, &vif->flags); 428 netif_carrier_on(vif->ndev); 429} 430 431void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 432 u8 keymgmt, u8 ucipher, u8 auth, 433 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info) 434{ 435 u8 *ies = NULL, *wpa_ie = NULL, *pos; 436 size_t ies_len = 0; 437 struct station_info sinfo; 438 439 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 440 441 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 442 struct ieee80211_mgmt *mgmt = 443 (struct ieee80211_mgmt *) assoc_info; 444 if (ieee80211_is_assoc_req(mgmt->frame_control) && 445 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 446 sizeof(mgmt->u.assoc_req)) { 447 ies = mgmt->u.assoc_req.variable; 448 ies_len = assoc_info + assoc_req_len - ies; 449 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 450 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 451 + sizeof(mgmt->u.reassoc_req)) { 452 ies = mgmt->u.reassoc_req.variable; 453 ies_len = assoc_info + assoc_req_len - ies; 454 } 455 } 456 457 pos = ies; 458 while (pos && pos + 1 < ies + ies_len) { 459 if (pos + 2 + pos[1] > ies + ies_len) 460 break; 461 if (pos[0] == WLAN_EID_RSN) 462 wpa_ie = pos; /* RSN IE */ 463 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 464 pos[1] >= 4 && 465 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 466 if (pos[5] == 0x01) 467 wpa_ie = pos; /* WPA IE */ 468 else if (pos[5] == 0x04) { 469 wpa_ie = pos; /* WPS IE */ 470 break; /* overrides WPA/RSN IE */ 471 } 472 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 473 /* 474 * Note: WAPI Parameter Set IE re-uses Element ID that 475 * was officially allocated for BSS AC Access Delay. As 476 * such, we need to be a bit more careful on when 477 * parsing the frame. However, BSS AC Access Delay 478 * element is not supposed to be included in 479 * (Re)Association Request frames, so this should not 480 * cause problems. 481 */ 482 wpa_ie = pos; /* WAPI IE */ 483 break; 484 } 485 pos += 2 + pos[1]; 486 } 487 488 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie, 489 wpa_ie ? 2 + wpa_ie[1] : 0, 490 keymgmt, ucipher, auth, apsd_info); 491 492 /* send event to application */ 493 memset(&sinfo, 0, sizeof(sinfo)); 494 495 /* TODO: sinfo.generation */ 496 497 sinfo.assoc_req_ies = ies; 498 sinfo.assoc_req_ies_len = ies_len; 499 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 500 501 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 502 503 netif_wake_queue(vif->ndev); 504} 505 506void disconnect_timer_handler(unsigned long ptr) 507{ 508 struct net_device *dev = (struct net_device *)ptr; 509 struct ath6kl_vif *vif = netdev_priv(dev); 510 511 ath6kl_init_profile_info(vif); 512 ath6kl_disconnect(vif); 513} 514 515void ath6kl_disconnect(struct ath6kl_vif *vif) 516{ 517 if (test_bit(CONNECTED, &vif->flags) || 518 test_bit(CONNECT_PEND, &vif->flags)) { 519 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 520 /* 521 * Disconnect command is issued, clear the connect pending 522 * flag. The connected flag will be cleared in 523 * disconnect event notification. 524 */ 525 clear_bit(CONNECT_PEND, &vif->flags); 526 } 527} 528 529/* WMI Event handlers */ 530 531void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 532{ 533 struct ath6kl *ar = devt; 534 535 memcpy(ar->mac_addr, datap, ETH_ALEN); 536 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 537 __func__, ar->mac_addr); 538 539 ar->version.wlan_ver = sw_ver; 540 ar->version.abi_ver = abi_ver; 541 542 snprintf(ar->wiphy->fw_version, 543 sizeof(ar->wiphy->fw_version), 544 "%u.%u.%u.%u", 545 (ar->version.wlan_ver & 0xf0000000) >> 28, 546 (ar->version.wlan_ver & 0x0f000000) >> 24, 547 (ar->version.wlan_ver & 0x00ff0000) >> 16, 548 (ar->version.wlan_ver & 0x0000ffff)); 549 550 /* indicate to the waiting thread that the ready event was received */ 551 set_bit(WMI_READY, &ar->flag); 552 wake_up(&ar->event_wq); 553} 554 555void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 556{ 557 struct ath6kl *ar = vif->ar; 558 bool aborted = false; 559 560 if (status != WMI_SCAN_STATUS_SUCCESS) 561 aborted = true; 562 563 ath6kl_cfg80211_scan_complete_event(vif, aborted); 564 565 if (!ar->usr_bss_filter) { 566 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 567 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 568 NONE_BSS_FILTER, 0); 569 } 570 571 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 572} 573 574void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 575 u16 listen_int, u16 beacon_int, 576 enum network_type net_type, u8 beacon_ie_len, 577 u8 assoc_req_len, u8 assoc_resp_len, 578 u8 *assoc_info) 579{ 580 struct ath6kl *ar = vif->ar; 581 582 ath6kl_cfg80211_connect_event(vif, channel, bssid, 583 listen_int, beacon_int, 584 net_type, beacon_ie_len, 585 assoc_req_len, assoc_resp_len, 586 assoc_info); 587 588 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 589 vif->bss_ch = channel; 590 591 if ((vif->nw_type == INFRA_NETWORK)) { 592 ar->listen_intvl_b = listen_int; 593 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 594 0, ar->listen_intvl_b); 595 } 596 597 netif_wake_queue(vif->ndev); 598 599 /* Update connect & link status atomically */ 600 spin_lock_bh(&vif->if_lock); 601 set_bit(CONNECTED, &vif->flags); 602 clear_bit(CONNECT_PEND, &vif->flags); 603 netif_carrier_on(vif->ndev); 604 spin_unlock_bh(&vif->if_lock); 605 606 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 607 vif->reconnect_flag = 0; 608 609 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 610 memset(ar->node_map, 0, sizeof(ar->node_map)); 611 ar->node_num = 0; 612 ar->next_ep_id = ENDPOINT_2; 613 } 614 615 if (!ar->usr_bss_filter) { 616 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 617 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 618 CURRENT_BSS_FILTER, 0); 619 } 620} 621 622void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 623{ 624 struct ath6kl_sta *sta; 625 struct ath6kl *ar = vif->ar; 626 u8 tsc[6]; 627 628 /* 629 * For AP case, keyid will have aid of STA which sent pkt with 630 * MIC error. Use this aid to get MAC & send it to hostapd. 631 */ 632 if (vif->nw_type == AP_NETWORK) { 633 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 634 if (!sta) 635 return; 636 637 ath6kl_dbg(ATH6KL_DBG_TRC, 638 "ap tkip mic error received from aid=%d\n", keyid); 639 640 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 641 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 642 NL80211_KEYTYPE_PAIRWISE, keyid, 643 tsc, GFP_KERNEL); 644 } else 645 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 646 647} 648 649static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 650{ 651 struct wmi_target_stats *tgt_stats = 652 (struct wmi_target_stats *) ptr; 653 struct ath6kl *ar = vif->ar; 654 struct target_stats *stats = &vif->target_stats; 655 struct tkip_ccmp_stats *ccmp_stats; 656 u8 ac; 657 658 if (len < sizeof(*tgt_stats)) 659 return; 660 661 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 662 663 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 664 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 665 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 666 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 667 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 668 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 669 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 670 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 671 stats->tx_rts_success_cnt += 672 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 673 674 for (ac = 0; ac < WMM_NUM_AC; ac++) 675 stats->tx_pkt_per_ac[ac] += 676 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 677 678 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 679 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 680 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 681 stats->tx_mult_retry_cnt += 682 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 683 stats->tx_rts_fail_cnt += 684 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 685 stats->tx_ucast_rate = 686 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 687 688 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 689 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 690 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 691 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 692 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 693 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 694 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 695 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 696 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 697 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 698 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 699 stats->rx_key_cache_miss += 700 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 701 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 702 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 703 stats->rx_ucast_rate = 704 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 705 706 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 707 708 stats->tkip_local_mic_fail += 709 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 710 stats->tkip_cnter_measures_invoked += 711 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 712 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 713 714 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 715 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 716 717 stats->pwr_save_fail_cnt += 718 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 719 stats->noise_floor_calib = 720 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 721 722 stats->cs_bmiss_cnt += 723 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 724 stats->cs_low_rssi_cnt += 725 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 726 stats->cs_connect_cnt += 727 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 728 stats->cs_discon_cnt += 729 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 730 731 stats->cs_ave_beacon_rssi = 732 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 733 734 stats->cs_last_roam_msec = 735 tgt_stats->cserv_stats.cs_last_roam_msec; 736 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 737 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 738 739 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 740 741 stats->wow_pkt_dropped += 742 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 743 stats->wow_host_pkt_wakeups += 744 tgt_stats->wow_stats.wow_host_pkt_wakeups; 745 stats->wow_host_evt_wakeups += 746 tgt_stats->wow_stats.wow_host_evt_wakeups; 747 stats->wow_evt_discarded += 748 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 749 750 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 751 clear_bit(STATS_UPDATE_PEND, &vif->flags); 752 wake_up(&ar->event_wq); 753 } 754} 755 756static void ath6kl_add_le32(__le32 *var, __le32 val) 757{ 758 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 759} 760 761void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 762{ 763 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 764 struct ath6kl *ar = vif->ar; 765 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 766 struct wmi_per_sta_stat *st_ap, *st_p; 767 u8 ac; 768 769 if (vif->nw_type == AP_NETWORK) { 770 if (len < sizeof(*p)) 771 return; 772 773 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 774 st_ap = &ap->sta[ac]; 775 st_p = &p->sta[ac]; 776 777 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 778 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 779 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 780 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 781 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 782 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 783 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 784 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 785 } 786 787 } else { 788 ath6kl_update_target_stats(vif, ptr, len); 789 } 790} 791 792void ath6kl_wakeup_event(void *dev) 793{ 794 struct ath6kl *ar = (struct ath6kl *) dev; 795 796 wake_up(&ar->event_wq); 797} 798 799void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 800{ 801 struct ath6kl *ar = (struct ath6kl *) devt; 802 803 ar->tx_pwr = tx_pwr; 804 wake_up(&ar->event_wq); 805} 806 807void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 808{ 809 struct ath6kl_sta *conn; 810 struct sk_buff *skb; 811 bool psq_empty = false; 812 struct ath6kl *ar = vif->ar; 813 814 conn = ath6kl_find_sta_by_aid(ar, aid); 815 816 if (!conn) 817 return; 818 /* 819 * Send out a packet queued on ps queue. When the ps queue 820 * becomes empty update the PVB for this station. 821 */ 822 spin_lock_bh(&conn->psq_lock); 823 psq_empty = skb_queue_empty(&conn->psq); 824 spin_unlock_bh(&conn->psq_lock); 825 826 if (psq_empty) 827 /* TODO: Send out a NULL data frame */ 828 return; 829 830 spin_lock_bh(&conn->psq_lock); 831 skb = skb_dequeue(&conn->psq); 832 spin_unlock_bh(&conn->psq_lock); 833 834 conn->sta_flags |= STA_PS_POLLED; 835 ath6kl_data_tx(skb, vif->ndev); 836 conn->sta_flags &= ~STA_PS_POLLED; 837 838 spin_lock_bh(&conn->psq_lock); 839 psq_empty = skb_queue_empty(&conn->psq); 840 spin_unlock_bh(&conn->psq_lock); 841 842 if (psq_empty) 843 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 844} 845 846void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 847{ 848 bool mcastq_empty = false; 849 struct sk_buff *skb; 850 struct ath6kl *ar = vif->ar; 851 852 /* 853 * If there are no associated STAs, ignore the DTIM expiry event. 854 * There can be potential race conditions where the last associated 855 * STA may disconnect & before the host could clear the 'Indicate 856 * DTIM' request to the firmware, the firmware would have just 857 * indicated a DTIM expiry event. The race is between 'clear DTIM 858 * expiry cmd' going from the host to the firmware & the DTIM 859 * expiry event happening from the firmware to the host. 860 */ 861 if (!ar->sta_list_index) 862 return; 863 864 spin_lock_bh(&ar->mcastpsq_lock); 865 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 866 spin_unlock_bh(&ar->mcastpsq_lock); 867 868 if (mcastq_empty) 869 return; 870 871 /* set the STA flag to dtim_expired for the frame to go out */ 872 set_bit(DTIM_EXPIRED, &vif->flags); 873 874 spin_lock_bh(&ar->mcastpsq_lock); 875 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 876 spin_unlock_bh(&ar->mcastpsq_lock); 877 878 ath6kl_data_tx(skb, vif->ndev); 879 880 spin_lock_bh(&ar->mcastpsq_lock); 881 } 882 spin_unlock_bh(&ar->mcastpsq_lock); 883 884 clear_bit(DTIM_EXPIRED, &vif->flags); 885 886 /* clear the LSB of the BitMapCtl field of the TIM IE */ 887 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 888} 889 890void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 891 u8 assoc_resp_len, u8 *assoc_info, 892 u16 prot_reason_status) 893{ 894 struct ath6kl *ar = vif->ar; 895 896 if (vif->nw_type == AP_NETWORK) { 897 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 898 return; 899 900 /* if no more associated STAs, empty the mcast PS q */ 901 if (ar->sta_list_index == 0) { 902 spin_lock_bh(&ar->mcastpsq_lock); 903 skb_queue_purge(&ar->mcastpsq); 904 spin_unlock_bh(&ar->mcastpsq_lock); 905 906 /* clear the LSB of the TIM IE's BitMapCtl field */ 907 if (test_bit(WMI_READY, &ar->flag)) 908 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 909 MCAST_AID, 0); 910 } 911 912 if (!is_broadcast_ether_addr(bssid)) { 913 /* send event to application */ 914 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 915 } 916 917 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 918 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 919 clear_bit(CONNECTED, &vif->flags); 920 } 921 return; 922 } 923 924 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 925 assoc_resp_len, assoc_info, 926 prot_reason_status); 927 928 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 929 930 del_timer(&vif->disconnect_timer); 931 932 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 933 934 /* 935 * If the event is due to disconnect cmd from the host, only they 936 * the target would stop trying to connect. Under any other 937 * condition, target would keep trying to connect. 938 */ 939 if (reason == DISCONNECT_CMD) { 940 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 941 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 942 NONE_BSS_FILTER, 0); 943 } else { 944 set_bit(CONNECT_PEND, &vif->flags); 945 if (((reason == ASSOC_FAILED) && 946 (prot_reason_status == 0x11)) || 947 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 948 && (vif->reconnect_flag == 1))) { 949 set_bit(CONNECTED, &vif->flags); 950 return; 951 } 952 } 953 954 /* update connect & link status atomically */ 955 spin_lock_bh(&vif->if_lock); 956 clear_bit(CONNECTED, &vif->flags); 957 netif_carrier_off(vif->ndev); 958 spin_unlock_bh(&vif->if_lock); 959 960 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 961 vif->reconnect_flag = 0; 962 963 if (reason != CSERV_DISCONNECT) 964 ar->user_key_ctrl = 0; 965 966 netif_stop_queue(vif->ndev); 967 memset(vif->bssid, 0, sizeof(vif->bssid)); 968 vif->bss_ch = 0; 969 970 ath6kl_tx_data_cleanup(ar); 971} 972 973struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 974{ 975 struct ath6kl_vif *vif; 976 977 spin_lock_bh(&ar->list_lock); 978 if (list_empty(&ar->vif_list)) { 979 spin_unlock_bh(&ar->list_lock); 980 return NULL; 981 } 982 983 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 984 985 spin_unlock_bh(&ar->list_lock); 986 987 return vif; 988} 989 990static int ath6kl_open(struct net_device *dev) 991{ 992 struct ath6kl_vif *vif = netdev_priv(dev); 993 994 set_bit(WLAN_ENABLED, &vif->flags); 995 996 if (test_bit(CONNECTED, &vif->flags)) { 997 netif_carrier_on(dev); 998 netif_wake_queue(dev); 999 } else 1000 netif_carrier_off(dev); 1001 1002 return 0; 1003} 1004 1005static int ath6kl_close(struct net_device *dev) 1006{ 1007 struct ath6kl_vif *vif = netdev_priv(dev); 1008 1009 netif_stop_queue(dev); 1010 1011 ath6kl_cfg80211_stop(vif); 1012 1013 clear_bit(WLAN_ENABLED, &vif->flags); 1014 1015 return 0; 1016} 1017 1018static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1019{ 1020 struct ath6kl_vif *vif = netdev_priv(dev); 1021 1022 return &vif->net_stats; 1023} 1024 1025static int ath6kl_set_features(struct net_device *dev, 1026 netdev_features_t features) 1027{ 1028 struct ath6kl_vif *vif = netdev_priv(dev); 1029 struct ath6kl *ar = vif->ar; 1030 int err = 0; 1031 1032 if ((features & NETIF_F_RXCSUM) && 1033 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1034 ar->rx_meta_ver = WMI_META_VERSION_2; 1035 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1036 vif->fw_vif_idx, 1037 ar->rx_meta_ver, 0, 0); 1038 if (err) { 1039 dev->features = features & ~NETIF_F_RXCSUM; 1040 return err; 1041 } 1042 } else if (!(features & NETIF_F_RXCSUM) && 1043 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1044 ar->rx_meta_ver = 0; 1045 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1046 vif->fw_vif_idx, 1047 ar->rx_meta_ver, 0, 0); 1048 if (err) { 1049 dev->features = features | NETIF_F_RXCSUM; 1050 return err; 1051 } 1052 1053 } 1054 1055 return err; 1056} 1057 1058static void ath6kl_set_multicast_list(struct net_device *ndev) 1059{ 1060 struct ath6kl_vif *vif = netdev_priv(ndev); 1061 bool mc_all_on = false, mc_all_off = false; 1062 int mc_count = netdev_mc_count(ndev); 1063 struct netdev_hw_addr *ha; 1064 bool found; 1065 struct ath6kl_mc_filter *mc_filter, *tmp; 1066 struct list_head mc_filter_new; 1067 int ret; 1068 1069 if (!test_bit(WMI_READY, &vif->ar->flag) || 1070 !test_bit(WLAN_ENABLED, &vif->flags)) 1071 return; 1072 1073 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1074 !!(ndev->flags & IFF_ALLMULTI) || 1075 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1076 1077 mc_all_off = !(ndev->flags & IFF_MULTICAST) || mc_count == 0; 1078 1079 if (mc_all_on || mc_all_off) { 1080 /* Enable/disable all multicast */ 1081 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast filter\n", 1082 mc_all_on ? "enabling" : "disabling"); 1083 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1084 mc_all_on); 1085 if (ret) 1086 ath6kl_warn("Failed to %s multicast receive\n", 1087 mc_all_on ? "enable" : "disable"); 1088 return; 1089 } 1090 1091 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1092 found = false; 1093 netdev_for_each_mc_addr(ha, ndev) { 1094 if (memcmp(ha->addr, mc_filter->hw_addr, 1095 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1096 found = true; 1097 break; 1098 } 1099 } 1100 1101 if (!found) { 1102 /* 1103 * Delete the filter which was previously set 1104 * but not in the new request. 1105 */ 1106 ath6kl_dbg(ATH6KL_DBG_TRC, 1107 "Removing %pM from multicast filter\n", 1108 mc_filter->hw_addr); 1109 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1110 vif->fw_vif_idx, mc_filter->hw_addr, 1111 false); 1112 if (ret) { 1113 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1114 mc_filter->hw_addr); 1115 return; 1116 } 1117 1118 list_del(&mc_filter->list); 1119 kfree(mc_filter); 1120 } 1121 } 1122 1123 INIT_LIST_HEAD(&mc_filter_new); 1124 1125 netdev_for_each_mc_addr(ha, ndev) { 1126 found = false; 1127 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1128 if (memcmp(ha->addr, mc_filter->hw_addr, 1129 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1130 found = true; 1131 break; 1132 } 1133 } 1134 1135 if (!found) { 1136 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1137 GFP_ATOMIC); 1138 if (!mc_filter) { 1139 WARN_ON(1); 1140 goto out; 1141 } 1142 1143 memcpy(mc_filter->hw_addr, ha->addr, 1144 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1145 /* Set the multicast filter */ 1146 ath6kl_dbg(ATH6KL_DBG_TRC, 1147 "Adding %pM to multicast filter list\n", 1148 mc_filter->hw_addr); 1149 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1150 vif->fw_vif_idx, mc_filter->hw_addr, 1151 true); 1152 if (ret) { 1153 ath6kl_warn("Failed to add multicast filter :%pM\n", 1154 mc_filter->hw_addr); 1155 kfree(mc_filter); 1156 goto out; 1157 } 1158 1159 list_add_tail(&mc_filter->list, &mc_filter_new); 1160 } 1161 } 1162 1163out: 1164 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1165} 1166 1167static const struct net_device_ops ath6kl_netdev_ops = { 1168 .ndo_open = ath6kl_open, 1169 .ndo_stop = ath6kl_close, 1170 .ndo_start_xmit = ath6kl_data_tx, 1171 .ndo_get_stats = ath6kl_get_stats, 1172 .ndo_set_features = ath6kl_set_features, 1173 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1174}; 1175 1176void init_netdev(struct net_device *dev) 1177{ 1178 dev->netdev_ops = &ath6kl_netdev_ops; 1179 dev->destructor = free_netdev; 1180 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1181 1182 dev->needed_headroom = ETH_HLEN; 1183 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1184 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1185 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1186 1187 return; 1188} 1189