1 /* 2 * Marvell Wireless LAN device driver: utility functions 3 * 4 * Copyright (C) 2011-2014, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20 #include "decl.h" 21 #include "ioctl.h" 22 #include "util.h" 23 #include "fw.h" 24 #include "main.h" 25 #include "wmm.h" 26 #include "11n.h" 27 28 static struct mwifiex_debug_data items[] = { 29 {"debug_mask", item_size(debug_mask), 30 item_addr(debug_mask), 1}, 31 {"int_counter", item_size(int_counter), 32 item_addr(int_counter), 1}, 33 {"wmm_ac_vo", item_size(packets_out[WMM_AC_VO]), 34 item_addr(packets_out[WMM_AC_VO]), 1}, 35 {"wmm_ac_vi", item_size(packets_out[WMM_AC_VI]), 36 item_addr(packets_out[WMM_AC_VI]), 1}, 37 {"wmm_ac_be", item_size(packets_out[WMM_AC_BE]), 38 item_addr(packets_out[WMM_AC_BE]), 1}, 39 {"wmm_ac_bk", item_size(packets_out[WMM_AC_BK]), 40 item_addr(packets_out[WMM_AC_BK]), 1}, 41 {"tx_buf_size", item_size(tx_buf_size), 42 item_addr(tx_buf_size), 1}, 43 {"curr_tx_buf_size", item_size(curr_tx_buf_size), 44 item_addr(curr_tx_buf_size), 1}, 45 {"ps_mode", item_size(ps_mode), 46 item_addr(ps_mode), 1}, 47 {"ps_state", item_size(ps_state), 48 item_addr(ps_state), 1}, 49 {"is_deep_sleep", item_size(is_deep_sleep), 50 item_addr(is_deep_sleep), 1}, 51 {"wakeup_dev_req", item_size(pm_wakeup_card_req), 52 item_addr(pm_wakeup_card_req), 1}, 53 {"wakeup_tries", item_size(pm_wakeup_fw_try), 54 item_addr(pm_wakeup_fw_try), 1}, 55 {"hs_configured", item_size(is_hs_configured), 56 item_addr(is_hs_configured), 1}, 57 {"hs_activated", item_size(hs_activated), 58 item_addr(hs_activated), 1}, 59 {"num_tx_timeout", item_size(num_tx_timeout), 60 item_addr(num_tx_timeout), 1}, 61 {"is_cmd_timedout", item_size(is_cmd_timedout), 62 item_addr(is_cmd_timedout), 1}, 63 {"timeout_cmd_id", item_size(timeout_cmd_id), 64 item_addr(timeout_cmd_id), 1}, 65 {"timeout_cmd_act", item_size(timeout_cmd_act), 66 item_addr(timeout_cmd_act), 1}, 67 {"last_cmd_id", item_size(last_cmd_id), 68 item_addr(last_cmd_id), DBG_CMD_NUM}, 69 {"last_cmd_act", item_size(last_cmd_act), 70 item_addr(last_cmd_act), DBG_CMD_NUM}, 71 {"last_cmd_index", item_size(last_cmd_index), 72 item_addr(last_cmd_index), 1}, 73 {"last_cmd_resp_id", item_size(last_cmd_resp_id), 74 item_addr(last_cmd_resp_id), DBG_CMD_NUM}, 75 {"last_cmd_resp_index", item_size(last_cmd_resp_index), 76 item_addr(last_cmd_resp_index), 1}, 77 {"last_event", item_size(last_event), 78 item_addr(last_event), DBG_CMD_NUM}, 79 {"last_event_index", item_size(last_event_index), 80 item_addr(last_event_index), 1}, 81 {"last_mp_wr_bitmap", item_size(last_mp_wr_bitmap), 82 item_addr(last_mp_wr_bitmap), MWIFIEX_DBG_SDIO_MP_NUM}, 83 {"last_mp_wr_ports", item_size(last_mp_wr_ports), 84 item_addr(last_mp_wr_ports), MWIFIEX_DBG_SDIO_MP_NUM}, 85 {"last_mp_wr_len", item_size(last_mp_wr_len), 86 item_addr(last_mp_wr_len), MWIFIEX_DBG_SDIO_MP_NUM}, 87 {"last_mp_curr_wr_port", item_size(last_mp_curr_wr_port), 88 item_addr(last_mp_curr_wr_port), MWIFIEX_DBG_SDIO_MP_NUM}, 89 {"last_sdio_mp_index", item_size(last_sdio_mp_index), 90 item_addr(last_sdio_mp_index), 1}, 91 {"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure), 92 item_addr(num_cmd_host_to_card_failure), 1}, 93 {"num_cmd_sleep_cfm_fail", 94 item_size(num_cmd_sleep_cfm_host_to_card_failure), 95 item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1}, 96 {"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure), 97 item_addr(num_tx_host_to_card_failure), 1}, 98 {"num_evt_deauth", item_size(num_event_deauth), 99 item_addr(num_event_deauth), 1}, 100 {"num_evt_disassoc", item_size(num_event_disassoc), 101 item_addr(num_event_disassoc), 1}, 102 {"num_evt_link_lost", item_size(num_event_link_lost), 103 item_addr(num_event_link_lost), 1}, 104 {"num_cmd_deauth", item_size(num_cmd_deauth), 105 item_addr(num_cmd_deauth), 1}, 106 {"num_cmd_assoc_ok", item_size(num_cmd_assoc_success), 107 item_addr(num_cmd_assoc_success), 1}, 108 {"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure), 109 item_addr(num_cmd_assoc_failure), 1}, 110 {"cmd_sent", item_size(cmd_sent), 111 item_addr(cmd_sent), 1}, 112 {"data_sent", item_size(data_sent), 113 item_addr(data_sent), 1}, 114 {"cmd_resp_received", item_size(cmd_resp_received), 115 item_addr(cmd_resp_received), 1}, 116 {"event_received", item_size(event_received), 117 item_addr(event_received), 1}, 118 119 /* variables defined in struct mwifiex_adapter */ 120 {"cmd_pending", adapter_item_size(cmd_pending), 121 adapter_item_addr(cmd_pending), 1}, 122 {"tx_pending", adapter_item_size(tx_pending), 123 adapter_item_addr(tx_pending), 1}, 124 {"rx_pending", adapter_item_size(rx_pending), 125 adapter_item_addr(rx_pending), 1}, 126 }; 127 128 static int num_of_items = ARRAY_SIZE(items); 129 130 /* 131 * Firmware initialization complete callback handler. 132 * 133 * This function wakes up the function waiting on the init 134 * wait queue for the firmware initialization to complete. 135 */ 136 int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter) 137 { 138 139 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) 140 if (adapter->if_ops.init_fw_port) 141 adapter->if_ops.init_fw_port(adapter); 142 143 adapter->init_wait_q_woken = true; 144 wake_up_interruptible(&adapter->init_wait_q); 145 return 0; 146 } 147 148 /* 149 * This function sends init/shutdown command 150 * to firmware. 151 */ 152 int mwifiex_init_shutdown_fw(struct mwifiex_private *priv, 153 u32 func_init_shutdown) 154 { 155 u16 cmd; 156 157 if (func_init_shutdown == MWIFIEX_FUNC_INIT) { 158 cmd = HostCmd_CMD_FUNC_INIT; 159 } else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) { 160 cmd = HostCmd_CMD_FUNC_SHUTDOWN; 161 } else { 162 mwifiex_dbg(priv->adapter, ERROR, 163 "unsupported parameter\n"); 164 return -1; 165 } 166 167 return mwifiex_send_cmd(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL, true); 168 } 169 EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw); 170 171 /* 172 * IOCTL request handler to set/get debug information. 173 * 174 * This function collates/sets the information from/to different driver 175 * structures. 176 */ 177 int mwifiex_get_debug_info(struct mwifiex_private *priv, 178 struct mwifiex_debug_info *info) 179 { 180 struct mwifiex_adapter *adapter = priv->adapter; 181 182 if (info) { 183 info->debug_mask = adapter->debug_mask; 184 memcpy(info->packets_out, 185 priv->wmm.packets_out, 186 sizeof(priv->wmm.packets_out)); 187 info->curr_tx_buf_size = (u32) adapter->curr_tx_buf_size; 188 info->tx_buf_size = (u32) adapter->tx_buf_size; 189 info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(priv, 190 info->rx_tbl); 191 info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(priv, 192 info->tx_tbl); 193 info->tdls_peer_num = mwifiex_get_tdls_list(priv, 194 info->tdls_list); 195 info->ps_mode = adapter->ps_mode; 196 info->ps_state = adapter->ps_state; 197 info->is_deep_sleep = adapter->is_deep_sleep; 198 info->pm_wakeup_card_req = adapter->pm_wakeup_card_req; 199 info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try; 200 info->is_hs_configured = test_bit(MWIFIEX_IS_HS_CONFIGURED, 201 &adapter->work_flags); 202 info->hs_activated = adapter->hs_activated; 203 info->is_cmd_timedout = test_bit(MWIFIEX_IS_CMD_TIMEDOUT, 204 &adapter->work_flags); 205 info->num_cmd_host_to_card_failure 206 = adapter->dbg.num_cmd_host_to_card_failure; 207 info->num_cmd_sleep_cfm_host_to_card_failure 208 = adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure; 209 info->num_tx_host_to_card_failure 210 = adapter->dbg.num_tx_host_to_card_failure; 211 info->num_event_deauth = adapter->dbg.num_event_deauth; 212 info->num_event_disassoc = adapter->dbg.num_event_disassoc; 213 info->num_event_link_lost = adapter->dbg.num_event_link_lost; 214 info->num_cmd_deauth = adapter->dbg.num_cmd_deauth; 215 info->num_cmd_assoc_success = 216 adapter->dbg.num_cmd_assoc_success; 217 info->num_cmd_assoc_failure = 218 adapter->dbg.num_cmd_assoc_failure; 219 info->num_tx_timeout = adapter->dbg.num_tx_timeout; 220 info->timeout_cmd_id = adapter->dbg.timeout_cmd_id; 221 info->timeout_cmd_act = adapter->dbg.timeout_cmd_act; 222 memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id, 223 sizeof(adapter->dbg.last_cmd_id)); 224 memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act, 225 sizeof(adapter->dbg.last_cmd_act)); 226 info->last_cmd_index = adapter->dbg.last_cmd_index; 227 memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id, 228 sizeof(adapter->dbg.last_cmd_resp_id)); 229 info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index; 230 memcpy(info->last_event, adapter->dbg.last_event, 231 sizeof(adapter->dbg.last_event)); 232 info->last_event_index = adapter->dbg.last_event_index; 233 memcpy(info->last_mp_wr_bitmap, adapter->dbg.last_mp_wr_bitmap, 234 sizeof(adapter->dbg.last_mp_wr_bitmap)); 235 memcpy(info->last_mp_wr_ports, adapter->dbg.last_mp_wr_ports, 236 sizeof(adapter->dbg.last_mp_wr_ports)); 237 memcpy(info->last_mp_curr_wr_port, 238 adapter->dbg.last_mp_curr_wr_port, 239 sizeof(adapter->dbg.last_mp_curr_wr_port)); 240 memcpy(info->last_mp_wr_len, adapter->dbg.last_mp_wr_len, 241 sizeof(adapter->dbg.last_mp_wr_len)); 242 info->last_sdio_mp_index = adapter->dbg.last_sdio_mp_index; 243 info->data_sent = adapter->data_sent; 244 info->cmd_sent = adapter->cmd_sent; 245 info->cmd_resp_received = adapter->cmd_resp_received; 246 } 247 248 return 0; 249 } 250 251 int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf, 252 struct mwifiex_debug_info *info) 253 { 254 char *p = buf; 255 struct mwifiex_debug_data *d = &items[0]; 256 size_t size, addr; 257 long val; 258 int i, j; 259 260 if (!info) 261 return 0; 262 263 for (i = 0; i < num_of_items; i++) { 264 p += sprintf(p, "%s=", d[i].name); 265 266 size = d[i].size / d[i].num; 267 268 if (i < (num_of_items - 3)) 269 addr = d[i].addr + (size_t)info; 270 else /* The last 3 items are struct mwifiex_adapter variables */ 271 addr = d[i].addr + (size_t)priv->adapter; 272 273 for (j = 0; j < d[i].num; j++) { 274 switch (size) { 275 case 1: 276 val = *((u8 *)addr); 277 break; 278 case 2: 279 val = get_unaligned((u16 *)addr); 280 break; 281 case 4: 282 val = get_unaligned((u32 *)addr); 283 break; 284 case 8: 285 val = get_unaligned((long long *)addr); 286 break; 287 default: 288 val = -1; 289 break; 290 } 291 292 p += sprintf(p, "%#lx ", val); 293 addr += size; 294 } 295 296 p += sprintf(p, "\n"); 297 } 298 299 if (info->tx_tbl_num) { 300 p += sprintf(p, "Tx BA stream table:\n"); 301 for (i = 0; i < info->tx_tbl_num; i++) 302 p += sprintf(p, "tid = %d, ra = %pM\n", 303 info->tx_tbl[i].tid, info->tx_tbl[i].ra); 304 } 305 306 if (info->rx_tbl_num) { 307 p += sprintf(p, "Rx reorder table:\n"); 308 for (i = 0; i < info->rx_tbl_num; i++) { 309 p += sprintf(p, "tid = %d, ta = %pM, ", 310 info->rx_tbl[i].tid, 311 info->rx_tbl[i].ta); 312 p += sprintf(p, "start_win = %d, ", 313 info->rx_tbl[i].start_win); 314 p += sprintf(p, "win_size = %d, buffer: ", 315 info->rx_tbl[i].win_size); 316 317 for (j = 0; j < info->rx_tbl[i].win_size; j++) 318 p += sprintf(p, "%c ", 319 info->rx_tbl[i].buffer[j] ? 320 '1' : '0'); 321 322 p += sprintf(p, "\n"); 323 } 324 } 325 326 if (info->tdls_peer_num) { 327 p += sprintf(p, "TDLS peer table:\n"); 328 for (i = 0; i < info->tdls_peer_num; i++) { 329 p += sprintf(p, "peer = %pM", 330 info->tdls_list[i].peer_addr); 331 p += sprintf(p, "\n"); 332 } 333 } 334 335 return p - buf; 336 } 337 338 static int 339 mwifiex_parse_mgmt_packet(struct mwifiex_private *priv, u8 *payload, u16 len, 340 struct rxpd *rx_pd) 341 { 342 u16 stype; 343 u8 category, action_code, *addr2; 344 struct ieee80211_hdr *ieee_hdr = (void *)payload; 345 346 stype = (le16_to_cpu(ieee_hdr->frame_control) & IEEE80211_FCTL_STYPE); 347 348 switch (stype) { 349 case IEEE80211_STYPE_ACTION: 350 category = *(payload + sizeof(struct ieee80211_hdr)); 351 switch (category) { 352 case WLAN_CATEGORY_PUBLIC: 353 action_code = *(payload + sizeof(struct ieee80211_hdr) 354 + 1); 355 if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) { 356 addr2 = ieee_hdr->addr2; 357 mwifiex_dbg(priv->adapter, INFO, 358 "TDLS discovery response %pM nf=%d, snr=%d\n", 359 addr2, rx_pd->nf, rx_pd->snr); 360 mwifiex_auto_tdls_update_peer_signal(priv, 361 addr2, 362 rx_pd->snr, 363 rx_pd->nf); 364 } 365 break; 366 case WLAN_CATEGORY_BACK: 367 /*we dont indicate BACK action frames to cfg80211*/ 368 mwifiex_dbg(priv->adapter, INFO, 369 "drop BACK action frames"); 370 return -1; 371 default: 372 mwifiex_dbg(priv->adapter, INFO, 373 "unknown public action frame category %d\n", 374 category); 375 } 376 break; 377 default: 378 mwifiex_dbg(priv->adapter, INFO, 379 "unknown mgmt frame subtype %#x\n", stype); 380 return 0; 381 } 382 383 return 0; 384 } 385 /* 386 * This function processes the received management packet and send it 387 * to the kernel. 388 */ 389 int 390 mwifiex_process_mgmt_packet(struct mwifiex_private *priv, 391 struct sk_buff *skb) 392 { 393 struct rxpd *rx_pd; 394 u16 pkt_len; 395 struct ieee80211_hdr *ieee_hdr; 396 397 if (!skb) 398 return -1; 399 400 if (!priv->mgmt_frame_mask || 401 priv->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) { 402 mwifiex_dbg(priv->adapter, ERROR, 403 "do not receive mgmt frames on uninitialized intf"); 404 return -1; 405 } 406 407 rx_pd = (struct rxpd *)skb->data; 408 409 skb_pull(skb, le16_to_cpu(rx_pd->rx_pkt_offset)); 410 skb_pull(skb, sizeof(pkt_len)); 411 412 pkt_len = le16_to_cpu(rx_pd->rx_pkt_length); 413 414 ieee_hdr = (void *)skb->data; 415 if (ieee80211_is_mgmt(ieee_hdr->frame_control)) { 416 if (mwifiex_parse_mgmt_packet(priv, (u8 *)ieee_hdr, 417 pkt_len, rx_pd)) 418 return -1; 419 } 420 /* Remove address4 */ 421 memmove(skb->data + sizeof(struct ieee80211_hdr_3addr), 422 skb->data + sizeof(struct ieee80211_hdr), 423 pkt_len - sizeof(struct ieee80211_hdr)); 424 425 pkt_len -= ETH_ALEN + sizeof(pkt_len); 426 rx_pd->rx_pkt_length = cpu_to_le16(pkt_len); 427 428 cfg80211_rx_mgmt(&priv->wdev, priv->roc_cfg.chan.center_freq, 429 CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len, 430 0); 431 432 return 0; 433 } 434 435 /* 436 * This function processes the received packet before sending it to the 437 * kernel. 438 * 439 * It extracts the SKB from the received buffer and sends it to kernel. 440 * In case the received buffer does not contain the data in SKB format, 441 * the function creates a blank SKB, fills it with the data from the 442 * received buffer and then sends this new SKB to the kernel. 443 */ 444 int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb) 445 { 446 struct mwifiex_sta_node *src_node; 447 struct ethhdr *p_ethhdr; 448 449 if (!skb) 450 return -1; 451 452 priv->stats.rx_bytes += skb->len; 453 priv->stats.rx_packets++; 454 455 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { 456 p_ethhdr = (void *)skb->data; 457 src_node = mwifiex_get_sta_entry(priv, p_ethhdr->h_source); 458 if (src_node) { 459 src_node->stats.last_rx = jiffies; 460 src_node->stats.rx_bytes += skb->len; 461 src_node->stats.rx_packets++; 462 } 463 } 464 465 skb->dev = priv->netdev; 466 skb->protocol = eth_type_trans(skb, priv->netdev); 467 skb->ip_summed = CHECKSUM_NONE; 468 469 /* This is required only in case of 11n and USB/PCIE as we alloc 470 * a buffer of 4K only if its 11N (to be able to receive 4K 471 * AMSDU packets). In case of SD we allocate buffers based 472 * on the size of packet and hence this is not needed. 473 * 474 * Modifying the truesize here as our allocation for each 475 * skb is 4K but we only receive 2K packets and this cause 476 * the kernel to start dropping packets in case where 477 * application has allocated buffer based on 2K size i.e. 478 * if there a 64K packet received (in IP fragments and 479 * application allocates 64K to receive this packet but 480 * this packet would almost double up because we allocate 481 * each 1.5K fragment in 4K and pass it up. As soon as the 482 * 64K limit hits kernel will start to drop rest of the 483 * fragments. Currently we fail the Filesndl-ht.scr script 484 * for UDP, hence this fix 485 */ 486 if ((priv->adapter->iface_type == MWIFIEX_USB || 487 priv->adapter->iface_type == MWIFIEX_PCIE) && 488 (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE)) 489 skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE); 490 491 if (in_interrupt()) 492 netif_rx(skb); 493 else 494 netif_rx_ni(skb); 495 496 return 0; 497 } 498 499 /* 500 * IOCTL completion callback handler. 501 * 502 * This function is called when a pending IOCTL is completed. 503 * 504 * If work queue support is enabled, the function wakes up the 505 * corresponding waiting function. Otherwise, it processes the 506 * IOCTL response and frees the response buffer. 507 */ 508 int mwifiex_complete_cmd(struct mwifiex_adapter *adapter, 509 struct cmd_ctrl_node *cmd_node) 510 { 511 WARN_ON(!cmd_node->wait_q_enabled); 512 mwifiex_dbg(adapter, CMD, "cmd completed: status=%d\n", 513 adapter->cmd_wait_q.status); 514 515 *cmd_node->condition = true; 516 wake_up_interruptible(&adapter->cmd_wait_q.wait); 517 518 return 0; 519 } 520 521 /* This function will return the pointer to station entry in station list 522 * table which matches specified mac address. 523 * This function should be called after acquiring RA list spinlock. 524 * NULL is returned if station entry is not found in associated STA list. 525 */ 526 struct mwifiex_sta_node * 527 mwifiex_get_sta_entry(struct mwifiex_private *priv, const u8 *mac) 528 { 529 struct mwifiex_sta_node *node; 530 531 if (!mac) 532 return NULL; 533 534 list_for_each_entry(node, &priv->sta_list, list) { 535 if (!memcmp(node->mac_addr, mac, ETH_ALEN)) 536 return node; 537 } 538 539 return NULL; 540 } 541 542 static struct mwifiex_sta_node * 543 mwifiex_get_tdls_sta_entry(struct mwifiex_private *priv, u8 status) 544 { 545 struct mwifiex_sta_node *node; 546 547 list_for_each_entry(node, &priv->sta_list, list) { 548 if (node->tdls_status == status) 549 return node; 550 } 551 552 return NULL; 553 } 554 555 /* If tdls channel switching is on-going, tx data traffic should be 556 * blocked until the switching stage completed. 557 */ 558 u8 mwifiex_is_tdls_chan_switching(struct mwifiex_private *priv) 559 { 560 struct mwifiex_sta_node *sta_ptr; 561 562 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 563 return false; 564 565 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_CHAN_SWITCHING); 566 if (sta_ptr) 567 return true; 568 569 return false; 570 } 571 572 u8 mwifiex_is_tdls_off_chan(struct mwifiex_private *priv) 573 { 574 struct mwifiex_sta_node *sta_ptr; 575 576 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 577 return false; 578 579 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_IN_OFF_CHAN); 580 if (sta_ptr) 581 return true; 582 583 return false; 584 } 585 586 /* If tdls channel switching is on-going or tdls operate on off-channel, 587 * cmd path should be blocked until tdls switched to base-channel. 588 */ 589 u8 mwifiex_is_send_cmd_allowed(struct mwifiex_private *priv) 590 { 591 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 592 return true; 593 594 if (mwifiex_is_tdls_chan_switching(priv) || 595 mwifiex_is_tdls_off_chan(priv)) 596 return false; 597 598 return true; 599 } 600 601 /* This function will add a sta_node entry to associated station list 602 * table with the given mac address. 603 * If entry exist already, existing entry is returned. 604 * If received mac address is NULL, NULL is returned. 605 */ 606 struct mwifiex_sta_node * 607 mwifiex_add_sta_entry(struct mwifiex_private *priv, const u8 *mac) 608 { 609 struct mwifiex_sta_node *node; 610 unsigned long flags; 611 612 if (!mac) 613 return NULL; 614 615 spin_lock_irqsave(&priv->sta_list_spinlock, flags); 616 node = mwifiex_get_sta_entry(priv, mac); 617 if (node) 618 goto done; 619 620 node = kzalloc(sizeof(*node), GFP_ATOMIC); 621 if (!node) 622 goto done; 623 624 memcpy(node->mac_addr, mac, ETH_ALEN); 625 list_add_tail(&node->list, &priv->sta_list); 626 627 done: 628 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 629 return node; 630 } 631 632 /* This function will search for HT IE in association request IEs 633 * and set station HT parameters accordingly. 634 */ 635 void 636 mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies, 637 int ies_len, struct mwifiex_sta_node *node) 638 { 639 struct ieee_types_header *ht_cap_ie; 640 const struct ieee80211_ht_cap *ht_cap; 641 642 if (!ies) 643 return; 644 645 ht_cap_ie = (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, 646 ies_len); 647 if (ht_cap_ie) { 648 ht_cap = (void *)(ht_cap_ie + 1); 649 node->is_11n_enabled = 1; 650 node->max_amsdu = le16_to_cpu(ht_cap->cap_info) & 651 IEEE80211_HT_CAP_MAX_AMSDU ? 652 MWIFIEX_TX_DATA_BUF_SIZE_8K : 653 MWIFIEX_TX_DATA_BUF_SIZE_4K; 654 } else { 655 node->is_11n_enabled = 0; 656 } 657 658 return; 659 } 660 661 /* This function will delete a station entry from station list */ 662 void mwifiex_del_sta_entry(struct mwifiex_private *priv, const u8 *mac) 663 { 664 struct mwifiex_sta_node *node; 665 unsigned long flags; 666 667 spin_lock_irqsave(&priv->sta_list_spinlock, flags); 668 669 node = mwifiex_get_sta_entry(priv, mac); 670 if (node) { 671 list_del(&node->list); 672 kfree(node); 673 } 674 675 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 676 return; 677 } 678 679 /* This function will delete all stations from associated station list. */ 680 void mwifiex_del_all_sta_list(struct mwifiex_private *priv) 681 { 682 struct mwifiex_sta_node *node, *tmp; 683 unsigned long flags; 684 685 spin_lock_irqsave(&priv->sta_list_spinlock, flags); 686 687 list_for_each_entry_safe(node, tmp, &priv->sta_list, list) { 688 list_del(&node->list); 689 kfree(node); 690 } 691 692 INIT_LIST_HEAD(&priv->sta_list); 693 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 694 return; 695 } 696 697 /* This function adds histogram data to histogram array*/ 698 void mwifiex_hist_data_add(struct mwifiex_private *priv, 699 u8 rx_rate, s8 snr, s8 nflr) 700 { 701 struct mwifiex_histogram_data *phist_data = priv->hist_data; 702 703 if (atomic_read(&phist_data->num_samples) > MWIFIEX_HIST_MAX_SAMPLES) 704 mwifiex_hist_data_reset(priv); 705 mwifiex_hist_data_set(priv, rx_rate, snr, nflr); 706 } 707 708 /* function to add histogram record */ 709 void mwifiex_hist_data_set(struct mwifiex_private *priv, u8 rx_rate, s8 snr, 710 s8 nflr) 711 { 712 struct mwifiex_histogram_data *phist_data = priv->hist_data; 713 s8 nf = -nflr; 714 s8 rssi = snr - nflr; 715 716 atomic_inc(&phist_data->num_samples); 717 atomic_inc(&phist_data->rx_rate[rx_rate]); 718 atomic_inc(&phist_data->snr[snr + 128]); 719 atomic_inc(&phist_data->noise_flr[nf + 128]); 720 atomic_inc(&phist_data->sig_str[rssi + 128]); 721 } 722 723 /* function to reset histogram data during init/reset */ 724 void mwifiex_hist_data_reset(struct mwifiex_private *priv) 725 { 726 int ix; 727 struct mwifiex_histogram_data *phist_data = priv->hist_data; 728 729 atomic_set(&phist_data->num_samples, 0); 730 for (ix = 0; ix < MWIFIEX_MAX_AC_RX_RATES; ix++) 731 atomic_set(&phist_data->rx_rate[ix], 0); 732 for (ix = 0; ix < MWIFIEX_MAX_SNR; ix++) 733 atomic_set(&phist_data->snr[ix], 0); 734 for (ix = 0; ix < MWIFIEX_MAX_NOISE_FLR; ix++) 735 atomic_set(&phist_data->noise_flr[ix], 0); 736 for (ix = 0; ix < MWIFIEX_MAX_SIG_STRENGTH; ix++) 737 atomic_set(&phist_data->sig_str[ix], 0); 738 } 739 740 void *mwifiex_alloc_dma_align_buf(int rx_len, gfp_t flags) 741 { 742 struct sk_buff *skb; 743 int buf_len, pad; 744 745 buf_len = rx_len + MWIFIEX_RX_HEADROOM + MWIFIEX_DMA_ALIGN_SZ; 746 747 skb = __dev_alloc_skb(buf_len, flags); 748 749 if (!skb) 750 return NULL; 751 752 skb_reserve(skb, MWIFIEX_RX_HEADROOM); 753 754 pad = MWIFIEX_ALIGN_ADDR(skb->data, MWIFIEX_DMA_ALIGN_SZ) - 755 (long)skb->data; 756 757 skb_reserve(skb, pad); 758 759 return skb; 760 } 761 EXPORT_SYMBOL_GPL(mwifiex_alloc_dma_align_buf); 762 763 void mwifiex_fw_dump_event(struct mwifiex_private *priv) 764 { 765 mwifiex_send_cmd(priv, HostCmd_CMD_FW_DUMP_EVENT, HostCmd_ACT_GEN_SET, 766 0, NULL, true); 767 } 768 EXPORT_SYMBOL_GPL(mwifiex_fw_dump_event); 769