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 23 struct 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 41 struct 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 55 static 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 { 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 76 static 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 96 static 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 } 127 128 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 129 { 130 struct ath6kl *ar = devt; 131 return ar->ac2ep_map[ac]; 132 } 133 134 struct 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 } 146 147 void 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 } 159 160 void ath6kl_cookie_cleanup(struct ath6kl *ar) 161 { 162 ar->cookie_list = NULL; 163 ar->cookie_count = 0; 164 } 165 166 void 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 */ 182 int 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 */ 200 int 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 } 214 215 int 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 } 231 232 int 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 } 249 250 int 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); 318 319 out: 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 328 329 void 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 } 351 352 status = ath6kl_diag_write32(ar, address, data); 353 354 if (status) 355 ath6kl_err("failed to reset target\n"); 356 } 357 358 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 359 { 360 u8 index; 361 u8 keyusage; 362 363 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) { 364 if (vif->wep_key_list[index].key_len) { 365 keyusage = GROUP_USAGE; 366 if (index == vif->def_txkey_index) 367 keyusage |= TX_USAGE; 368 369 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 370 index, 371 WEP_CRYPT, 372 keyusage, 373 vif->wep_key_list[index].key_len, 374 NULL, 0, 375 vif->wep_key_list[index].key, 376 KEY_OP_INIT_VAL, NULL, 377 NO_SYNC_WMIFLAG); 378 } 379 } 380 } 381 382 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 383 { 384 struct ath6kl *ar = vif->ar; 385 struct ath6kl_req_key *ik; 386 int res; 387 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 388 389 ik = &ar->ap_mode_bkey; 390 391 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 392 393 switch (vif->auth_mode) { 394 case NONE_AUTH: 395 if (vif->prwise_crypto == WEP_CRYPT) 396 ath6kl_install_static_wep_keys(vif); 397 if (!ik->valid || ik->key_type != WAPI_CRYPT) 398 break; 399 /* for WAPI, we need to set the delayed group key, continue: */ 400 case WPA_PSK_AUTH: 401 case WPA2_PSK_AUTH: 402 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 403 if (!ik->valid) 404 break; 405 406 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 407 "the initial group key for AP mode\n"); 408 memset(key_rsc, 0, sizeof(key_rsc)); 409 res = ath6kl_wmi_addkey_cmd( 410 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 411 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN, 412 ik->key, 413 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 414 if (res) { 415 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 416 "addkey failed: %d\n", res); 417 } 418 break; 419 } 420 421 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 422 set_bit(CONNECTED, &vif->flags); 423 netif_carrier_on(vif->ndev); 424 } 425 426 void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 427 u8 keymgmt, u8 ucipher, u8 auth, 428 u8 assoc_req_len, u8 *assoc_info) 429 { 430 struct ath6kl *ar = vif->ar; 431 u8 *ies = NULL, *wpa_ie = NULL, *pos; 432 size_t ies_len = 0; 433 struct station_info sinfo; 434 435 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 436 437 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 438 struct ieee80211_mgmt *mgmt = 439 (struct ieee80211_mgmt *) assoc_info; 440 if (ieee80211_is_assoc_req(mgmt->frame_control) && 441 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 442 sizeof(mgmt->u.assoc_req)) { 443 ies = mgmt->u.assoc_req.variable; 444 ies_len = assoc_info + assoc_req_len - ies; 445 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 446 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 447 + sizeof(mgmt->u.reassoc_req)) { 448 ies = mgmt->u.reassoc_req.variable; 449 ies_len = assoc_info + assoc_req_len - ies; 450 } 451 } 452 453 pos = ies; 454 while (pos && pos + 1 < ies + ies_len) { 455 if (pos + 2 + pos[1] > ies + ies_len) 456 break; 457 if (pos[0] == WLAN_EID_RSN) 458 wpa_ie = pos; /* RSN IE */ 459 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 460 pos[1] >= 4 && 461 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 462 if (pos[5] == 0x01) 463 wpa_ie = pos; /* WPA IE */ 464 else if (pos[5] == 0x04) { 465 wpa_ie = pos; /* WPS IE */ 466 break; /* overrides WPA/RSN IE */ 467 } 468 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 469 /* 470 * Note: WAPI Parameter Set IE re-uses Element ID that 471 * was officially allocated for BSS AC Access Delay. As 472 * such, we need to be a bit more careful on when 473 * parsing the frame. However, BSS AC Access Delay 474 * element is not supposed to be included in 475 * (Re)Association Request frames, so this should not 476 * cause problems. 477 */ 478 wpa_ie = pos; /* WAPI IE */ 479 break; 480 } 481 pos += 2 + pos[1]; 482 } 483 484 ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie, 485 wpa_ie ? 2 + wpa_ie[1] : 0, 486 keymgmt, ucipher, auth); 487 488 /* send event to application */ 489 memset(&sinfo, 0, sizeof(sinfo)); 490 491 /* TODO: sinfo.generation */ 492 493 sinfo.assoc_req_ies = ies; 494 sinfo.assoc_req_ies_len = ies_len; 495 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 496 497 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 498 499 netif_wake_queue(vif->ndev); 500 } 501 502 void disconnect_timer_handler(unsigned long ptr) 503 { 504 struct net_device *dev = (struct net_device *)ptr; 505 struct ath6kl_vif *vif = netdev_priv(dev); 506 507 ath6kl_init_profile_info(vif); 508 ath6kl_disconnect(vif); 509 } 510 511 void ath6kl_disconnect(struct ath6kl_vif *vif) 512 { 513 if (test_bit(CONNECTED, &vif->flags) || 514 test_bit(CONNECT_PEND, &vif->flags)) { 515 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 516 /* 517 * Disconnect command is issued, clear the connect pending 518 * flag. The connected flag will be cleared in 519 * disconnect event notification. 520 */ 521 clear_bit(CONNECT_PEND, &vif->flags); 522 } 523 } 524 525 /* WMI Event handlers */ 526 527 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 528 { 529 struct ath6kl *ar = devt; 530 531 memcpy(ar->mac_addr, datap, ETH_ALEN); 532 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 533 __func__, ar->mac_addr); 534 535 ar->version.wlan_ver = sw_ver; 536 ar->version.abi_ver = abi_ver; 537 538 snprintf(ar->wiphy->fw_version, 539 sizeof(ar->wiphy->fw_version), 540 "%u.%u.%u.%u", 541 (ar->version.wlan_ver & 0xf0000000) >> 28, 542 (ar->version.wlan_ver & 0x0f000000) >> 24, 543 (ar->version.wlan_ver & 0x00ff0000) >> 16, 544 (ar->version.wlan_ver & 0x0000ffff)); 545 546 /* indicate to the waiting thread that the ready event was received */ 547 set_bit(WMI_READY, &ar->flag); 548 wake_up(&ar->event_wq); 549 } 550 551 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 552 { 553 struct ath6kl *ar = vif->ar; 554 bool aborted = false; 555 556 if (status != WMI_SCAN_STATUS_SUCCESS) 557 aborted = true; 558 559 ath6kl_cfg80211_scan_complete_event(vif, aborted); 560 561 if (!ar->usr_bss_filter) { 562 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 563 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 564 NONE_BSS_FILTER, 0); 565 } 566 567 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 568 } 569 570 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 571 u16 listen_int, u16 beacon_int, 572 enum network_type net_type, u8 beacon_ie_len, 573 u8 assoc_req_len, u8 assoc_resp_len, 574 u8 *assoc_info) 575 { 576 struct ath6kl *ar = vif->ar; 577 578 ath6kl_cfg80211_connect_event(vif, channel, bssid, 579 listen_int, beacon_int, 580 net_type, beacon_ie_len, 581 assoc_req_len, assoc_resp_len, 582 assoc_info); 583 584 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 585 vif->bss_ch = channel; 586 587 if ((vif->nw_type == INFRA_NETWORK)) 588 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 589 ar->listen_intvl_t, 590 ar->listen_intvl_b); 591 592 netif_wake_queue(vif->ndev); 593 594 /* Update connect & link status atomically */ 595 spin_lock_bh(&vif->if_lock); 596 set_bit(CONNECTED, &vif->flags); 597 clear_bit(CONNECT_PEND, &vif->flags); 598 netif_carrier_on(vif->ndev); 599 spin_unlock_bh(&vif->if_lock); 600 601 aggr_reset_state(vif->aggr_cntxt); 602 vif->reconnect_flag = 0; 603 604 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 605 memset(ar->node_map, 0, sizeof(ar->node_map)); 606 ar->node_num = 0; 607 ar->next_ep_id = ENDPOINT_2; 608 } 609 610 if (!ar->usr_bss_filter) { 611 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 612 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 613 CURRENT_BSS_FILTER, 0); 614 } 615 } 616 617 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 618 { 619 struct ath6kl_sta *sta; 620 struct ath6kl *ar = vif->ar; 621 u8 tsc[6]; 622 623 /* 624 * For AP case, keyid will have aid of STA which sent pkt with 625 * MIC error. Use this aid to get MAC & send it to hostapd. 626 */ 627 if (vif->nw_type == AP_NETWORK) { 628 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 629 if (!sta) 630 return; 631 632 ath6kl_dbg(ATH6KL_DBG_TRC, 633 "ap tkip mic error received from aid=%d\n", keyid); 634 635 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 636 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 637 NL80211_KEYTYPE_PAIRWISE, keyid, 638 tsc, GFP_KERNEL); 639 } else 640 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 641 642 } 643 644 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 645 { 646 struct wmi_target_stats *tgt_stats = 647 (struct wmi_target_stats *) ptr; 648 struct ath6kl *ar = vif->ar; 649 struct target_stats *stats = &vif->target_stats; 650 struct tkip_ccmp_stats *ccmp_stats; 651 u8 ac; 652 653 if (len < sizeof(*tgt_stats)) 654 return; 655 656 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 657 658 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 659 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 660 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 661 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 662 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 663 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 664 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 665 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 666 stats->tx_rts_success_cnt += 667 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 668 669 for (ac = 0; ac < WMM_NUM_AC; ac++) 670 stats->tx_pkt_per_ac[ac] += 671 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 672 673 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 674 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 675 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 676 stats->tx_mult_retry_cnt += 677 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 678 stats->tx_rts_fail_cnt += 679 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 680 stats->tx_ucast_rate = 681 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 682 683 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 684 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 685 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 686 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 687 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 688 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 689 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 690 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 691 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 692 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 693 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 694 stats->rx_key_cache_miss += 695 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 696 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 697 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 698 stats->rx_ucast_rate = 699 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 700 701 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 702 703 stats->tkip_local_mic_fail += 704 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 705 stats->tkip_cnter_measures_invoked += 706 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 707 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 708 709 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 710 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 711 712 stats->pwr_save_fail_cnt += 713 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 714 stats->noise_floor_calib = 715 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 716 717 stats->cs_bmiss_cnt += 718 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 719 stats->cs_low_rssi_cnt += 720 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 721 stats->cs_connect_cnt += 722 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 723 stats->cs_discon_cnt += 724 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 725 726 stats->cs_ave_beacon_rssi = 727 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 728 729 stats->cs_last_roam_msec = 730 tgt_stats->cserv_stats.cs_last_roam_msec; 731 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 732 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 733 734 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 735 736 stats->wow_pkt_dropped += 737 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 738 stats->wow_host_pkt_wakeups += 739 tgt_stats->wow_stats.wow_host_pkt_wakeups; 740 stats->wow_host_evt_wakeups += 741 tgt_stats->wow_stats.wow_host_evt_wakeups; 742 stats->wow_evt_discarded += 743 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 744 745 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 746 clear_bit(STATS_UPDATE_PEND, &vif->flags); 747 wake_up(&ar->event_wq); 748 } 749 } 750 751 static void ath6kl_add_le32(__le32 *var, __le32 val) 752 { 753 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 754 } 755 756 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 757 { 758 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 759 struct ath6kl *ar = vif->ar; 760 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 761 struct wmi_per_sta_stat *st_ap, *st_p; 762 u8 ac; 763 764 if (vif->nw_type == AP_NETWORK) { 765 if (len < sizeof(*p)) 766 return; 767 768 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 769 st_ap = &ap->sta[ac]; 770 st_p = &p->sta[ac]; 771 772 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 773 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 774 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 775 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 776 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 777 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 778 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 779 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 780 } 781 782 } else { 783 ath6kl_update_target_stats(vif, ptr, len); 784 } 785 } 786 787 void ath6kl_wakeup_event(void *dev) 788 { 789 struct ath6kl *ar = (struct ath6kl *) dev; 790 791 wake_up(&ar->event_wq); 792 } 793 794 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 795 { 796 struct ath6kl *ar = (struct ath6kl *) devt; 797 798 ar->tx_pwr = tx_pwr; 799 wake_up(&ar->event_wq); 800 } 801 802 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 803 { 804 struct ath6kl_sta *conn; 805 struct sk_buff *skb; 806 bool psq_empty = false; 807 struct ath6kl *ar = vif->ar; 808 809 conn = ath6kl_find_sta_by_aid(ar, aid); 810 811 if (!conn) 812 return; 813 /* 814 * Send out a packet queued on ps queue. When the ps queue 815 * becomes empty update the PVB for this station. 816 */ 817 spin_lock_bh(&conn->psq_lock); 818 psq_empty = skb_queue_empty(&conn->psq); 819 spin_unlock_bh(&conn->psq_lock); 820 821 if (psq_empty) 822 /* TODO: Send out a NULL data frame */ 823 return; 824 825 spin_lock_bh(&conn->psq_lock); 826 skb = skb_dequeue(&conn->psq); 827 spin_unlock_bh(&conn->psq_lock); 828 829 conn->sta_flags |= STA_PS_POLLED; 830 ath6kl_data_tx(skb, vif->ndev); 831 conn->sta_flags &= ~STA_PS_POLLED; 832 833 spin_lock_bh(&conn->psq_lock); 834 psq_empty = skb_queue_empty(&conn->psq); 835 spin_unlock_bh(&conn->psq_lock); 836 837 if (psq_empty) 838 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 839 } 840 841 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 842 { 843 bool mcastq_empty = false; 844 struct sk_buff *skb; 845 struct ath6kl *ar = vif->ar; 846 847 /* 848 * If there are no associated STAs, ignore the DTIM expiry event. 849 * There can be potential race conditions where the last associated 850 * STA may disconnect & before the host could clear the 'Indicate 851 * DTIM' request to the firmware, the firmware would have just 852 * indicated a DTIM expiry event. The race is between 'clear DTIM 853 * expiry cmd' going from the host to the firmware & the DTIM 854 * expiry event happening from the firmware to the host. 855 */ 856 if (!ar->sta_list_index) 857 return; 858 859 spin_lock_bh(&ar->mcastpsq_lock); 860 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 861 spin_unlock_bh(&ar->mcastpsq_lock); 862 863 if (mcastq_empty) 864 return; 865 866 /* set the STA flag to dtim_expired for the frame to go out */ 867 set_bit(DTIM_EXPIRED, &vif->flags); 868 869 spin_lock_bh(&ar->mcastpsq_lock); 870 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 871 spin_unlock_bh(&ar->mcastpsq_lock); 872 873 ath6kl_data_tx(skb, vif->ndev); 874 875 spin_lock_bh(&ar->mcastpsq_lock); 876 } 877 spin_unlock_bh(&ar->mcastpsq_lock); 878 879 clear_bit(DTIM_EXPIRED, &vif->flags); 880 881 /* clear the LSB of the BitMapCtl field of the TIM IE */ 882 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 883 } 884 885 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 886 u8 assoc_resp_len, u8 *assoc_info, 887 u16 prot_reason_status) 888 { 889 struct ath6kl *ar = vif->ar; 890 891 if (vif->nw_type == AP_NETWORK) { 892 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 893 return; 894 895 /* if no more associated STAs, empty the mcast PS q */ 896 if (ar->sta_list_index == 0) { 897 spin_lock_bh(&ar->mcastpsq_lock); 898 skb_queue_purge(&ar->mcastpsq); 899 spin_unlock_bh(&ar->mcastpsq_lock); 900 901 /* clear the LSB of the TIM IE's BitMapCtl field */ 902 if (test_bit(WMI_READY, &ar->flag)) 903 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 904 MCAST_AID, 0); 905 } 906 907 if (!is_broadcast_ether_addr(bssid)) { 908 /* send event to application */ 909 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 910 } 911 912 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 913 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 914 clear_bit(CONNECTED, &vif->flags); 915 } 916 return; 917 } 918 919 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 920 assoc_resp_len, assoc_info, 921 prot_reason_status); 922 923 aggr_reset_state(vif->aggr_cntxt); 924 925 del_timer(&vif->disconnect_timer); 926 927 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 928 929 /* 930 * If the event is due to disconnect cmd from the host, only they 931 * the target would stop trying to connect. Under any other 932 * condition, target would keep trying to connect. 933 */ 934 if (reason == DISCONNECT_CMD) { 935 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 936 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 937 NONE_BSS_FILTER, 0); 938 } else { 939 set_bit(CONNECT_PEND, &vif->flags); 940 if (((reason == ASSOC_FAILED) && 941 (prot_reason_status == 0x11)) || 942 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 943 && (vif->reconnect_flag == 1))) { 944 set_bit(CONNECTED, &vif->flags); 945 return; 946 } 947 } 948 949 /* update connect & link status atomically */ 950 spin_lock_bh(&vif->if_lock); 951 clear_bit(CONNECTED, &vif->flags); 952 netif_carrier_off(vif->ndev); 953 spin_unlock_bh(&vif->if_lock); 954 955 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 956 vif->reconnect_flag = 0; 957 958 if (reason != CSERV_DISCONNECT) 959 ar->user_key_ctrl = 0; 960 961 netif_stop_queue(vif->ndev); 962 memset(vif->bssid, 0, sizeof(vif->bssid)); 963 vif->bss_ch = 0; 964 965 ath6kl_tx_data_cleanup(ar); 966 } 967 968 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 969 { 970 struct ath6kl_vif *vif; 971 972 spin_lock_bh(&ar->list_lock); 973 if (list_empty(&ar->vif_list)) { 974 spin_unlock_bh(&ar->list_lock); 975 return NULL; 976 } 977 978 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 979 980 spin_unlock_bh(&ar->list_lock); 981 982 return vif; 983 } 984 985 static int ath6kl_open(struct net_device *dev) 986 { 987 struct ath6kl_vif *vif = netdev_priv(dev); 988 989 set_bit(WLAN_ENABLED, &vif->flags); 990 991 if (test_bit(CONNECTED, &vif->flags)) { 992 netif_carrier_on(dev); 993 netif_wake_queue(dev); 994 } else 995 netif_carrier_off(dev); 996 997 return 0; 998 } 999 1000 static int ath6kl_close(struct net_device *dev) 1001 { 1002 struct ath6kl_vif *vif = netdev_priv(dev); 1003 1004 netif_stop_queue(dev); 1005 1006 ath6kl_cfg80211_stop(vif); 1007 1008 clear_bit(WLAN_ENABLED, &vif->flags); 1009 1010 return 0; 1011 } 1012 1013 static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1014 { 1015 struct ath6kl_vif *vif = netdev_priv(dev); 1016 1017 return &vif->net_stats; 1018 } 1019 1020 static int ath6kl_set_features(struct net_device *dev, u32 features) 1021 { 1022 struct ath6kl_vif *vif = netdev_priv(dev); 1023 struct ath6kl *ar = vif->ar; 1024 int err = 0; 1025 1026 if ((features & NETIF_F_RXCSUM) && 1027 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1028 ar->rx_meta_ver = WMI_META_VERSION_2; 1029 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1030 vif->fw_vif_idx, 1031 ar->rx_meta_ver, 0, 0); 1032 if (err) { 1033 dev->features = features & ~NETIF_F_RXCSUM; 1034 return err; 1035 } 1036 } else if (!(features & NETIF_F_RXCSUM) && 1037 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1038 ar->rx_meta_ver = 0; 1039 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1040 vif->fw_vif_idx, 1041 ar->rx_meta_ver, 0, 0); 1042 if (err) { 1043 dev->features = features | NETIF_F_RXCSUM; 1044 return err; 1045 } 1046 1047 } 1048 1049 return err; 1050 } 1051 1052 static void ath6kl_set_multicast_list(struct net_device *ndev) 1053 { 1054 struct ath6kl_vif *vif = netdev_priv(ndev); 1055 bool mc_all_on = false, mc_all_off = false; 1056 int mc_count = netdev_mc_count(ndev); 1057 struct netdev_hw_addr *ha; 1058 bool found; 1059 struct ath6kl_mc_filter *mc_filter, *tmp; 1060 struct list_head mc_filter_new; 1061 int ret; 1062 1063 if (!test_bit(WMI_READY, &vif->ar->flag) || 1064 !test_bit(WLAN_ENABLED, &vif->flags)) 1065 return; 1066 1067 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1068 !!(ndev->flags & IFF_ALLMULTI) || 1069 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1070 1071 mc_all_off = !(ndev->flags & IFF_MULTICAST) || mc_count == 0; 1072 1073 if (mc_all_on || mc_all_off) { 1074 /* Enable/disable all multicast */ 1075 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast filter\n", 1076 mc_all_on ? "enabling" : "disabling"); 1077 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1078 mc_all_on); 1079 if (ret) 1080 ath6kl_warn("Failed to %s multicast receive\n", 1081 mc_all_on ? "enable" : "disable"); 1082 return; 1083 } 1084 1085 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1086 found = false; 1087 netdev_for_each_mc_addr(ha, ndev) { 1088 if (memcmp(ha->addr, mc_filter->hw_addr, 1089 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1090 found = true; 1091 break; 1092 } 1093 } 1094 1095 if (!found) { 1096 /* 1097 * Delete the filter which was previously set 1098 * but not in the new request. 1099 */ 1100 ath6kl_dbg(ATH6KL_DBG_TRC, 1101 "Removing %pM from multicast filter\n", 1102 mc_filter->hw_addr); 1103 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1104 vif->fw_vif_idx, mc_filter->hw_addr, 1105 false); 1106 if (ret) { 1107 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1108 mc_filter->hw_addr); 1109 return; 1110 } 1111 1112 list_del(&mc_filter->list); 1113 kfree(mc_filter); 1114 } 1115 } 1116 1117 INIT_LIST_HEAD(&mc_filter_new); 1118 1119 netdev_for_each_mc_addr(ha, ndev) { 1120 found = false; 1121 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1122 if (memcmp(ha->addr, mc_filter->hw_addr, 1123 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1124 found = true; 1125 break; 1126 } 1127 } 1128 1129 if (!found) { 1130 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1131 GFP_ATOMIC); 1132 if (!mc_filter) { 1133 WARN_ON(1); 1134 goto out; 1135 } 1136 1137 memcpy(mc_filter->hw_addr, ha->addr, 1138 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1139 /* Set the multicast filter */ 1140 ath6kl_dbg(ATH6KL_DBG_TRC, 1141 "Adding %pM to multicast filter list\n", 1142 mc_filter->hw_addr); 1143 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1144 vif->fw_vif_idx, mc_filter->hw_addr, 1145 true); 1146 if (ret) { 1147 ath6kl_warn("Failed to add multicast filter :%pM\n", 1148 mc_filter->hw_addr); 1149 kfree(mc_filter); 1150 goto out; 1151 } 1152 1153 list_add_tail(&mc_filter->list, &mc_filter_new); 1154 } 1155 } 1156 1157 out: 1158 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1159 } 1160 1161 static const struct net_device_ops ath6kl_netdev_ops = { 1162 .ndo_open = ath6kl_open, 1163 .ndo_stop = ath6kl_close, 1164 .ndo_start_xmit = ath6kl_data_tx, 1165 .ndo_get_stats = ath6kl_get_stats, 1166 .ndo_set_features = ath6kl_set_features, 1167 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1168 }; 1169 1170 void init_netdev(struct net_device *dev) 1171 { 1172 dev->netdev_ops = &ath6kl_netdev_ops; 1173 dev->destructor = free_netdev; 1174 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1175 1176 dev->needed_headroom = ETH_HLEN; 1177 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1178 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1179 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1180 1181 return; 1182 } 1183