1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * NXP Wireless LAN device driver: utility functions 4 * 5 * Copyright 2011-2020 NXP 6 */ 7 8 #include "decl.h" 9 #include "ioctl.h" 10 #include "util.h" 11 #include "fw.h" 12 #include "main.h" 13 #include "wmm.h" 14 #include "11n.h" 15 16 static struct mwifiex_debug_data items[] = { 17 {"debug_mask", item_size(debug_mask), 18 item_addr(debug_mask), 1}, 19 {"int_counter", item_size(int_counter), 20 item_addr(int_counter), 1}, 21 {"wmm_ac_vo", item_size(packets_out[WMM_AC_VO]), 22 item_addr(packets_out[WMM_AC_VO]), 1}, 23 {"wmm_ac_vi", item_size(packets_out[WMM_AC_VI]), 24 item_addr(packets_out[WMM_AC_VI]), 1}, 25 {"wmm_ac_be", item_size(packets_out[WMM_AC_BE]), 26 item_addr(packets_out[WMM_AC_BE]), 1}, 27 {"wmm_ac_bk", item_size(packets_out[WMM_AC_BK]), 28 item_addr(packets_out[WMM_AC_BK]), 1}, 29 {"tx_buf_size", item_size(tx_buf_size), 30 item_addr(tx_buf_size), 1}, 31 {"curr_tx_buf_size", item_size(curr_tx_buf_size), 32 item_addr(curr_tx_buf_size), 1}, 33 {"ps_mode", item_size(ps_mode), 34 item_addr(ps_mode), 1}, 35 {"ps_state", item_size(ps_state), 36 item_addr(ps_state), 1}, 37 {"is_deep_sleep", item_size(is_deep_sleep), 38 item_addr(is_deep_sleep), 1}, 39 {"wakeup_dev_req", item_size(pm_wakeup_card_req), 40 item_addr(pm_wakeup_card_req), 1}, 41 {"wakeup_tries", item_size(pm_wakeup_fw_try), 42 item_addr(pm_wakeup_fw_try), 1}, 43 {"hs_configured", item_size(is_hs_configured), 44 item_addr(is_hs_configured), 1}, 45 {"hs_activated", item_size(hs_activated), 46 item_addr(hs_activated), 1}, 47 {"num_tx_timeout", item_size(num_tx_timeout), 48 item_addr(num_tx_timeout), 1}, 49 {"is_cmd_timedout", item_size(is_cmd_timedout), 50 item_addr(is_cmd_timedout), 1}, 51 {"timeout_cmd_id", item_size(timeout_cmd_id), 52 item_addr(timeout_cmd_id), 1}, 53 {"timeout_cmd_act", item_size(timeout_cmd_act), 54 item_addr(timeout_cmd_act), 1}, 55 {"last_cmd_id", item_size(last_cmd_id), 56 item_addr(last_cmd_id), DBG_CMD_NUM}, 57 {"last_cmd_act", item_size(last_cmd_act), 58 item_addr(last_cmd_act), DBG_CMD_NUM}, 59 {"last_cmd_index", item_size(last_cmd_index), 60 item_addr(last_cmd_index), 1}, 61 {"last_cmd_resp_id", item_size(last_cmd_resp_id), 62 item_addr(last_cmd_resp_id), DBG_CMD_NUM}, 63 {"last_cmd_resp_index", item_size(last_cmd_resp_index), 64 item_addr(last_cmd_resp_index), 1}, 65 {"last_event", item_size(last_event), 66 item_addr(last_event), DBG_CMD_NUM}, 67 {"last_event_index", item_size(last_event_index), 68 item_addr(last_event_index), 1}, 69 {"last_mp_wr_bitmap", item_size(last_mp_wr_bitmap), 70 item_addr(last_mp_wr_bitmap), MWIFIEX_DBG_SDIO_MP_NUM}, 71 {"last_mp_wr_ports", item_size(last_mp_wr_ports), 72 item_addr(last_mp_wr_ports), MWIFIEX_DBG_SDIO_MP_NUM}, 73 {"last_mp_wr_len", item_size(last_mp_wr_len), 74 item_addr(last_mp_wr_len), MWIFIEX_DBG_SDIO_MP_NUM}, 75 {"last_mp_curr_wr_port", item_size(last_mp_curr_wr_port), 76 item_addr(last_mp_curr_wr_port), MWIFIEX_DBG_SDIO_MP_NUM}, 77 {"last_sdio_mp_index", item_size(last_sdio_mp_index), 78 item_addr(last_sdio_mp_index), 1}, 79 {"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure), 80 item_addr(num_cmd_host_to_card_failure), 1}, 81 {"num_cmd_sleep_cfm_fail", 82 item_size(num_cmd_sleep_cfm_host_to_card_failure), 83 item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1}, 84 {"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure), 85 item_addr(num_tx_host_to_card_failure), 1}, 86 {"num_evt_deauth", item_size(num_event_deauth), 87 item_addr(num_event_deauth), 1}, 88 {"num_evt_disassoc", item_size(num_event_disassoc), 89 item_addr(num_event_disassoc), 1}, 90 {"num_evt_link_lost", item_size(num_event_link_lost), 91 item_addr(num_event_link_lost), 1}, 92 {"num_cmd_deauth", item_size(num_cmd_deauth), 93 item_addr(num_cmd_deauth), 1}, 94 {"num_cmd_assoc_ok", item_size(num_cmd_assoc_success), 95 item_addr(num_cmd_assoc_success), 1}, 96 {"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure), 97 item_addr(num_cmd_assoc_failure), 1}, 98 {"cmd_sent", item_size(cmd_sent), 99 item_addr(cmd_sent), 1}, 100 {"data_sent", item_size(data_sent), 101 item_addr(data_sent), 1}, 102 {"cmd_resp_received", item_size(cmd_resp_received), 103 item_addr(cmd_resp_received), 1}, 104 {"event_received", item_size(event_received), 105 item_addr(event_received), 1}, 106 107 /* variables defined in struct mwifiex_adapter */ 108 {"cmd_pending", adapter_item_size(cmd_pending), 109 adapter_item_addr(cmd_pending), 1}, 110 {"tx_pending", adapter_item_size(tx_pending), 111 adapter_item_addr(tx_pending), 1}, 112 {"rx_pending", adapter_item_size(rx_pending), 113 adapter_item_addr(rx_pending), 1}, 114 }; 115 116 static int num_of_items = ARRAY_SIZE(items); 117 118 /* 119 * This function sends init/shutdown command 120 * to firmware. 121 */ 122 int mwifiex_init_shutdown_fw(struct mwifiex_private *priv, 123 u32 func_init_shutdown) 124 { 125 u16 cmd; 126 127 if (func_init_shutdown == MWIFIEX_FUNC_INIT) { 128 cmd = HostCmd_CMD_FUNC_INIT; 129 } else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) { 130 cmd = HostCmd_CMD_FUNC_SHUTDOWN; 131 } else { 132 mwifiex_dbg(priv->adapter, ERROR, 133 "unsupported parameter\n"); 134 return -1; 135 } 136 137 return mwifiex_send_cmd(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL, true); 138 } 139 EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw); 140 141 /* 142 * IOCTL request handler to set/get debug information. 143 * 144 * This function collates/sets the information from/to different driver 145 * structures. 146 */ 147 int mwifiex_get_debug_info(struct mwifiex_private *priv, 148 struct mwifiex_debug_info *info) 149 { 150 struct mwifiex_adapter *adapter = priv->adapter; 151 152 if (info) { 153 info->debug_mask = adapter->debug_mask; 154 memcpy(info->packets_out, 155 priv->wmm.packets_out, 156 sizeof(priv->wmm.packets_out)); 157 info->curr_tx_buf_size = (u32) adapter->curr_tx_buf_size; 158 info->tx_buf_size = (u32) adapter->tx_buf_size; 159 info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(priv, 160 info->rx_tbl); 161 info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(priv, 162 info->tx_tbl); 163 info->tdls_peer_num = mwifiex_get_tdls_list(priv, 164 info->tdls_list); 165 info->ps_mode = adapter->ps_mode; 166 info->ps_state = adapter->ps_state; 167 info->is_deep_sleep = adapter->is_deep_sleep; 168 info->pm_wakeup_card_req = adapter->pm_wakeup_card_req; 169 info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try; 170 info->is_hs_configured = test_bit(MWIFIEX_IS_HS_CONFIGURED, 171 &adapter->work_flags); 172 info->hs_activated = adapter->hs_activated; 173 info->is_cmd_timedout = test_bit(MWIFIEX_IS_CMD_TIMEDOUT, 174 &adapter->work_flags); 175 info->num_cmd_host_to_card_failure 176 = adapter->dbg.num_cmd_host_to_card_failure; 177 info->num_cmd_sleep_cfm_host_to_card_failure 178 = adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure; 179 info->num_tx_host_to_card_failure 180 = adapter->dbg.num_tx_host_to_card_failure; 181 info->num_event_deauth = adapter->dbg.num_event_deauth; 182 info->num_event_disassoc = adapter->dbg.num_event_disassoc; 183 info->num_event_link_lost = adapter->dbg.num_event_link_lost; 184 info->num_cmd_deauth = adapter->dbg.num_cmd_deauth; 185 info->num_cmd_assoc_success = 186 adapter->dbg.num_cmd_assoc_success; 187 info->num_cmd_assoc_failure = 188 adapter->dbg.num_cmd_assoc_failure; 189 info->num_tx_timeout = adapter->dbg.num_tx_timeout; 190 info->timeout_cmd_id = adapter->dbg.timeout_cmd_id; 191 info->timeout_cmd_act = adapter->dbg.timeout_cmd_act; 192 memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id, 193 sizeof(adapter->dbg.last_cmd_id)); 194 memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act, 195 sizeof(adapter->dbg.last_cmd_act)); 196 info->last_cmd_index = adapter->dbg.last_cmd_index; 197 memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id, 198 sizeof(adapter->dbg.last_cmd_resp_id)); 199 info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index; 200 memcpy(info->last_event, adapter->dbg.last_event, 201 sizeof(adapter->dbg.last_event)); 202 info->last_event_index = adapter->dbg.last_event_index; 203 memcpy(info->last_mp_wr_bitmap, adapter->dbg.last_mp_wr_bitmap, 204 sizeof(adapter->dbg.last_mp_wr_bitmap)); 205 memcpy(info->last_mp_wr_ports, adapter->dbg.last_mp_wr_ports, 206 sizeof(adapter->dbg.last_mp_wr_ports)); 207 memcpy(info->last_mp_curr_wr_port, 208 adapter->dbg.last_mp_curr_wr_port, 209 sizeof(adapter->dbg.last_mp_curr_wr_port)); 210 memcpy(info->last_mp_wr_len, adapter->dbg.last_mp_wr_len, 211 sizeof(adapter->dbg.last_mp_wr_len)); 212 info->last_sdio_mp_index = adapter->dbg.last_sdio_mp_index; 213 info->data_sent = adapter->data_sent; 214 info->cmd_sent = adapter->cmd_sent; 215 info->cmd_resp_received = adapter->cmd_resp_received; 216 } 217 218 return 0; 219 } 220 221 int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf, 222 struct mwifiex_debug_info *info) 223 { 224 char *p = buf; 225 struct mwifiex_debug_data *d = &items[0]; 226 size_t size, addr; 227 long val; 228 int i, j; 229 230 if (!info) 231 return 0; 232 233 for (i = 0; i < num_of_items; i++) { 234 p += sprintf(p, "%s=", d[i].name); 235 236 size = d[i].size / d[i].num; 237 238 if (i < (num_of_items - 3)) 239 addr = d[i].addr + (size_t)info; 240 else /* The last 3 items are struct mwifiex_adapter variables */ 241 addr = d[i].addr + (size_t)priv->adapter; 242 243 for (j = 0; j < d[i].num; j++) { 244 switch (size) { 245 case 1: 246 val = *((u8 *)addr); 247 break; 248 case 2: 249 val = get_unaligned((u16 *)addr); 250 break; 251 case 4: 252 val = get_unaligned((u32 *)addr); 253 break; 254 case 8: 255 val = get_unaligned((long long *)addr); 256 break; 257 default: 258 val = -1; 259 break; 260 } 261 262 p += sprintf(p, "%#lx ", val); 263 addr += size; 264 } 265 266 p += sprintf(p, "\n"); 267 } 268 269 if (info->tx_tbl_num) { 270 p += sprintf(p, "Tx BA stream table:\n"); 271 for (i = 0; i < info->tx_tbl_num; i++) 272 p += sprintf(p, "tid = %d, ra = %pM\n", 273 info->tx_tbl[i].tid, info->tx_tbl[i].ra); 274 } 275 276 if (info->rx_tbl_num) { 277 p += sprintf(p, "Rx reorder table:\n"); 278 for (i = 0; i < info->rx_tbl_num; i++) { 279 p += sprintf(p, "tid = %d, ta = %pM, ", 280 info->rx_tbl[i].tid, 281 info->rx_tbl[i].ta); 282 p += sprintf(p, "start_win = %d, ", 283 info->rx_tbl[i].start_win); 284 p += sprintf(p, "win_size = %d, buffer: ", 285 info->rx_tbl[i].win_size); 286 287 for (j = 0; j < info->rx_tbl[i].win_size; j++) 288 p += sprintf(p, "%c ", 289 info->rx_tbl[i].buffer[j] ? 290 '1' : '0'); 291 292 p += sprintf(p, "\n"); 293 } 294 } 295 296 if (info->tdls_peer_num) { 297 p += sprintf(p, "TDLS peer table:\n"); 298 for (i = 0; i < info->tdls_peer_num; i++) { 299 p += sprintf(p, "peer = %pM", 300 info->tdls_list[i].peer_addr); 301 p += sprintf(p, "\n"); 302 } 303 } 304 305 return p - buf; 306 } 307 308 static int 309 mwifiex_parse_mgmt_packet(struct mwifiex_private *priv, u8 *payload, u16 len, 310 struct rxpd *rx_pd) 311 { 312 u16 stype; 313 u8 category, action_code, *addr2; 314 struct ieee80211_hdr *ieee_hdr = (void *)payload; 315 316 stype = (le16_to_cpu(ieee_hdr->frame_control) & IEEE80211_FCTL_STYPE); 317 318 switch (stype) { 319 case IEEE80211_STYPE_ACTION: 320 category = *(payload + sizeof(struct ieee80211_hdr)); 321 switch (category) { 322 case WLAN_CATEGORY_PUBLIC: 323 action_code = *(payload + sizeof(struct ieee80211_hdr) 324 + 1); 325 if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) { 326 addr2 = ieee_hdr->addr2; 327 mwifiex_dbg(priv->adapter, INFO, 328 "TDLS discovery response %pM nf=%d, snr=%d\n", 329 addr2, rx_pd->nf, rx_pd->snr); 330 mwifiex_auto_tdls_update_peer_signal(priv, 331 addr2, 332 rx_pd->snr, 333 rx_pd->nf); 334 } 335 break; 336 case WLAN_CATEGORY_BACK: 337 /*we dont indicate BACK action frames to cfg80211*/ 338 mwifiex_dbg(priv->adapter, INFO, 339 "drop BACK action frames"); 340 return -1; 341 default: 342 mwifiex_dbg(priv->adapter, INFO, 343 "unknown public action frame category %d\n", 344 category); 345 } 346 break; 347 default: 348 mwifiex_dbg(priv->adapter, INFO, 349 "unknown mgmt frame subtype %#x\n", stype); 350 return 0; 351 } 352 353 return 0; 354 } 355 356 /* This function sends deauth packet to the kernel. */ 357 void mwifiex_host_mlme_disconnect(struct mwifiex_private *priv, 358 u16 reason_code, u8 *sa) 359 { 360 u8 frame_buf[100]; 361 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)frame_buf; 362 363 memset(frame_buf, 0, sizeof(frame_buf)); 364 mgmt->frame_control = cpu_to_le16(IEEE80211_STYPE_DEAUTH); 365 mgmt->duration = 0; 366 mgmt->seq_ctrl = 0; 367 mgmt->u.deauth.reason_code = cpu_to_le16(reason_code); 368 369 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) { 370 eth_broadcast_addr(mgmt->da); 371 memcpy(mgmt->sa, 372 priv->curr_bss_params.bss_descriptor.mac_address, 373 ETH_ALEN); 374 memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN); 375 priv->auth_flag = 0; 376 priv->auth_alg = WLAN_AUTH_NONE; 377 } else { 378 memcpy(mgmt->da, priv->curr_addr, ETH_ALEN); 379 memcpy(mgmt->sa, sa, ETH_ALEN); 380 memcpy(mgmt->bssid, priv->curr_addr, ETH_ALEN); 381 } 382 383 if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP) { 384 wiphy_lock(priv->wdev.wiphy); 385 cfg80211_rx_mlme_mgmt(priv->netdev, frame_buf, 26); 386 wiphy_unlock(priv->wdev.wiphy); 387 } else { 388 cfg80211_rx_mgmt(&priv->wdev, 389 priv->bss_chandef.chan->center_freq, 390 0, frame_buf, 26, 0); 391 } 392 } 393 394 /* 395 * This function processes the received management packet and send it 396 * to the kernel. 397 */ 398 int 399 mwifiex_process_mgmt_packet(struct mwifiex_private *priv, 400 struct sk_buff *skb) 401 { 402 struct rxpd *rx_pd; 403 u16 pkt_len; 404 struct ieee80211_hdr *ieee_hdr; 405 406 if (!skb) 407 return -1; 408 409 if (!priv->mgmt_frame_mask || 410 priv->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) { 411 mwifiex_dbg(priv->adapter, ERROR, 412 "do not receive mgmt frames on uninitialized intf"); 413 return -1; 414 } 415 416 rx_pd = (struct rxpd *)skb->data; 417 pkt_len = le16_to_cpu(rx_pd->rx_pkt_length); 418 if (pkt_len < sizeof(struct ieee80211_hdr) + sizeof(pkt_len)) { 419 mwifiex_dbg(priv->adapter, ERROR, "invalid rx_pkt_length"); 420 return -1; 421 } 422 423 skb_pull(skb, le16_to_cpu(rx_pd->rx_pkt_offset)); 424 skb_pull(skb, sizeof(pkt_len)); 425 pkt_len -= sizeof(pkt_len); 426 427 ieee_hdr = (void *)skb->data; 428 if (ieee80211_is_mgmt(ieee_hdr->frame_control)) { 429 if (mwifiex_parse_mgmt_packet(priv, (u8 *)ieee_hdr, 430 pkt_len, rx_pd)) 431 return -1; 432 } 433 /* Remove address4 */ 434 memmove(skb->data + sizeof(struct ieee80211_hdr_3addr), 435 skb->data + sizeof(struct ieee80211_hdr), 436 pkt_len - sizeof(struct ieee80211_hdr)); 437 438 pkt_len -= ETH_ALEN; 439 rx_pd->rx_pkt_length = cpu_to_le16(pkt_len); 440 441 if (priv->host_mlme_reg && 442 (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP) && 443 (ieee80211_is_auth(ieee_hdr->frame_control) || 444 ieee80211_is_deauth(ieee_hdr->frame_control) || 445 ieee80211_is_disassoc(ieee_hdr->frame_control))) { 446 if (ieee80211_is_auth(ieee_hdr->frame_control)) { 447 if (priv->auth_flag & HOST_MLME_AUTH_PENDING) { 448 if (priv->auth_alg != WLAN_AUTH_SAE) { 449 priv->auth_flag &= 450 ~HOST_MLME_AUTH_PENDING; 451 priv->auth_flag |= 452 HOST_MLME_AUTH_DONE; 453 } 454 } else { 455 return 0; 456 } 457 458 mwifiex_dbg(priv->adapter, MSG, 459 "auth: receive authentication from %pM\n", 460 ieee_hdr->addr3); 461 } else { 462 if (!priv->wdev.connected) 463 return 0; 464 465 if (ieee80211_is_deauth(ieee_hdr->frame_control)) { 466 mwifiex_dbg(priv->adapter, MSG, 467 "auth: receive deauth from %pM\n", 468 ieee_hdr->addr3); 469 priv->auth_flag = 0; 470 priv->auth_alg = WLAN_AUTH_NONE; 471 } else { 472 mwifiex_dbg 473 (priv->adapter, MSG, 474 "assoc: receive disassoc from %pM\n", 475 ieee_hdr->addr3); 476 } 477 } 478 479 wiphy_lock(priv->wdev.wiphy); 480 cfg80211_rx_mlme_mgmt(priv->netdev, skb->data, pkt_len); 481 wiphy_unlock(priv->wdev.wiphy); 482 } 483 484 if (priv->adapter->host_mlme_enabled && 485 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP)) { 486 if (ieee80211_is_auth(ieee_hdr->frame_control)) 487 mwifiex_dbg(priv->adapter, MSG, 488 "auth: receive auth from %pM\n", 489 ieee_hdr->addr2); 490 if (ieee80211_is_deauth(ieee_hdr->frame_control)) 491 mwifiex_dbg(priv->adapter, MSG, 492 "auth: receive deauth from %pM\n", 493 ieee_hdr->addr2); 494 if (ieee80211_is_disassoc(ieee_hdr->frame_control)) 495 mwifiex_dbg(priv->adapter, MSG, 496 "assoc: receive disassoc from %pM\n", 497 ieee_hdr->addr2); 498 if (ieee80211_is_assoc_req(ieee_hdr->frame_control)) 499 mwifiex_dbg(priv->adapter, MSG, 500 "assoc: receive assoc req from %pM\n", 501 ieee_hdr->addr2); 502 if (ieee80211_is_reassoc_req(ieee_hdr->frame_control)) 503 mwifiex_dbg(priv->adapter, MSG, 504 "assoc: receive reassoc req from %pM\n", 505 ieee_hdr->addr2); 506 } 507 508 cfg80211_rx_mgmt(&priv->wdev, priv->roc_cfg.chan.center_freq, 509 CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len, 510 0); 511 512 return 0; 513 } 514 515 /* 516 * This function processes the received packet before sending it to the 517 * kernel. 518 * 519 * It extracts the SKB from the received buffer and sends it to kernel. 520 * In case the received buffer does not contain the data in SKB format, 521 * the function creates a blank SKB, fills it with the data from the 522 * received buffer and then sends this new SKB to the kernel. 523 */ 524 int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb) 525 { 526 struct mwifiex_sta_node *src_node; 527 struct ethhdr *p_ethhdr; 528 529 if (!skb) 530 return -1; 531 532 priv->stats.rx_bytes += skb->len; 533 priv->stats.rx_packets++; 534 535 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { 536 p_ethhdr = (void *)skb->data; 537 src_node = mwifiex_get_sta_entry(priv, p_ethhdr->h_source); 538 if (src_node) { 539 src_node->stats.last_rx = jiffies; 540 src_node->stats.rx_bytes += skb->len; 541 src_node->stats.rx_packets++; 542 } 543 } 544 545 skb->dev = priv->netdev; 546 skb->protocol = eth_type_trans(skb, priv->netdev); 547 skb->ip_summed = CHECKSUM_NONE; 548 549 /* This is required only in case of 11n and USB/PCIE as we alloc 550 * a buffer of 4K only if its 11N (to be able to receive 4K 551 * AMSDU packets). In case of SD we allocate buffers based 552 * on the size of packet and hence this is not needed. 553 * 554 * Modifying the truesize here as our allocation for each 555 * skb is 4K but we only receive 2K packets and this cause 556 * the kernel to start dropping packets in case where 557 * application has allocated buffer based on 2K size i.e. 558 * if there a 64K packet received (in IP fragments and 559 * application allocates 64K to receive this packet but 560 * this packet would almost double up because we allocate 561 * each 1.5K fragment in 4K and pass it up. As soon as the 562 * 64K limit hits kernel will start to drop rest of the 563 * fragments. Currently we fail the Filesndl-ht.scr script 564 * for UDP, hence this fix 565 */ 566 if ((priv->adapter->iface_type == MWIFIEX_USB || 567 priv->adapter->iface_type == MWIFIEX_PCIE) && 568 (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE)) 569 skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE); 570 571 netif_rx(skb); 572 return 0; 573 } 574 575 /* 576 * IOCTL completion callback handler. 577 * 578 * This function is called when a pending IOCTL is completed. 579 * 580 * If work queue support is enabled, the function wakes up the 581 * corresponding waiting function. Otherwise, it processes the 582 * IOCTL response and frees the response buffer. 583 */ 584 int mwifiex_complete_cmd(struct mwifiex_adapter *adapter, 585 struct cmd_ctrl_node *cmd_node) 586 { 587 WARN_ON(!cmd_node->wait_q_enabled); 588 mwifiex_dbg(adapter, CMD, "cmd completed: status=%d\n", 589 adapter->cmd_wait_q.status); 590 591 *cmd_node->condition = true; 592 wake_up_interruptible(&adapter->cmd_wait_q.wait); 593 594 return 0; 595 } 596 597 /* This function will return the pointer to station entry in station list 598 * table which matches specified mac address. 599 * This function should be called after acquiring RA list spinlock. 600 * NULL is returned if station entry is not found in associated STA list. 601 */ 602 struct mwifiex_sta_node * 603 mwifiex_get_sta_entry(struct mwifiex_private *priv, const u8 *mac) 604 { 605 struct mwifiex_sta_node *node; 606 607 if (!mac) 608 return NULL; 609 610 list_for_each_entry(node, &priv->sta_list, list) { 611 if (!memcmp(node->mac_addr, mac, ETH_ALEN)) 612 return node; 613 } 614 615 return NULL; 616 } 617 618 static struct mwifiex_sta_node * 619 mwifiex_get_tdls_sta_entry(struct mwifiex_private *priv, u8 status) 620 { 621 struct mwifiex_sta_node *node; 622 623 list_for_each_entry(node, &priv->sta_list, list) { 624 if (node->tdls_status == status) 625 return node; 626 } 627 628 return NULL; 629 } 630 631 /* If tdls channel switching is on-going, tx data traffic should be 632 * blocked until the switching stage completed. 633 */ 634 u8 mwifiex_is_tdls_chan_switching(struct mwifiex_private *priv) 635 { 636 struct mwifiex_sta_node *sta_ptr; 637 638 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 639 return false; 640 641 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_CHAN_SWITCHING); 642 if (sta_ptr) 643 return true; 644 645 return false; 646 } 647 648 static u8 mwifiex_is_tdls_off_chan(struct mwifiex_private *priv) 649 { 650 struct mwifiex_sta_node *sta_ptr; 651 652 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 653 return false; 654 655 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_IN_OFF_CHAN); 656 if (sta_ptr) 657 return true; 658 659 return false; 660 } 661 662 /* If tdls channel switching is on-going or tdls operate on off-channel, 663 * cmd path should be blocked until tdls switched to base-channel. 664 */ 665 u8 mwifiex_is_send_cmd_allowed(struct mwifiex_private *priv) 666 { 667 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 668 return true; 669 670 if (mwifiex_is_tdls_chan_switching(priv) || 671 mwifiex_is_tdls_off_chan(priv)) 672 return false; 673 674 return true; 675 } 676 677 /* This function will add a sta_node entry to associated station list 678 * table with the given mac address. 679 * If entry exist already, existing entry is returned. 680 * If received mac address is NULL, NULL is returned. 681 */ 682 struct mwifiex_sta_node * 683 mwifiex_add_sta_entry(struct mwifiex_private *priv, const u8 *mac) 684 { 685 struct mwifiex_sta_node *node; 686 687 if (!mac) 688 return NULL; 689 690 spin_lock_bh(&priv->sta_list_spinlock); 691 node = mwifiex_get_sta_entry(priv, mac); 692 if (node) 693 goto done; 694 695 node = kzalloc(sizeof(*node), GFP_ATOMIC); 696 if (!node) 697 goto done; 698 699 memcpy(node->mac_addr, mac, ETH_ALEN); 700 list_add_tail(&node->list, &priv->sta_list); 701 702 done: 703 spin_unlock_bh(&priv->sta_list_spinlock); 704 return node; 705 } 706 707 /* This function will search for HT IE in association request IEs 708 * and set station HT parameters accordingly. 709 */ 710 void 711 mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies, 712 int ies_len, struct mwifiex_sta_node *node) 713 { 714 struct ieee_types_header *ht_cap_ie; 715 const struct ieee80211_ht_cap *ht_cap; 716 717 if (!ies) 718 return; 719 720 ht_cap_ie = (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, 721 ies_len); 722 if (ht_cap_ie) { 723 ht_cap = (void *)(ht_cap_ie + 1); 724 node->is_11n_enabled = 1; 725 node->max_amsdu = le16_to_cpu(ht_cap->cap_info) & 726 IEEE80211_HT_CAP_MAX_AMSDU ? 727 MWIFIEX_TX_DATA_BUF_SIZE_8K : 728 MWIFIEX_TX_DATA_BUF_SIZE_4K; 729 } else { 730 node->is_11n_enabled = 0; 731 } 732 733 return; 734 } 735 736 /* This function will delete a station entry from station list */ 737 void mwifiex_del_sta_entry(struct mwifiex_private *priv, const u8 *mac) 738 { 739 struct mwifiex_sta_node *node; 740 741 spin_lock_bh(&priv->sta_list_spinlock); 742 743 node = mwifiex_get_sta_entry(priv, mac); 744 if (node) { 745 list_del(&node->list); 746 kfree(node); 747 } 748 749 spin_unlock_bh(&priv->sta_list_spinlock); 750 return; 751 } 752 753 /* This function will delete all stations from associated station list. */ 754 void mwifiex_del_all_sta_list(struct mwifiex_private *priv) 755 { 756 struct mwifiex_sta_node *node, *tmp; 757 758 spin_lock_bh(&priv->sta_list_spinlock); 759 760 list_for_each_entry_safe(node, tmp, &priv->sta_list, list) { 761 list_del(&node->list); 762 kfree(node); 763 } 764 765 INIT_LIST_HEAD(&priv->sta_list); 766 spin_unlock_bh(&priv->sta_list_spinlock); 767 return; 768 } 769 770 /* This function adds histogram data to histogram array*/ 771 void mwifiex_hist_data_add(struct mwifiex_private *priv, 772 u8 rx_rate, s8 snr, s8 nflr) 773 { 774 struct mwifiex_histogram_data *phist_data = priv->hist_data; 775 776 if (atomic_read(&phist_data->num_samples) > MWIFIEX_HIST_MAX_SAMPLES) 777 mwifiex_hist_data_reset(priv); 778 mwifiex_hist_data_set(priv, rx_rate, snr, nflr); 779 } 780 781 /* function to add histogram record */ 782 void mwifiex_hist_data_set(struct mwifiex_private *priv, u8 rx_rate, s8 snr, 783 s8 nflr) 784 { 785 struct mwifiex_histogram_data *phist_data = priv->hist_data; 786 s8 nf = -nflr; 787 s8 rssi = snr - nflr; 788 789 atomic_inc(&phist_data->num_samples); 790 atomic_inc(&phist_data->rx_rate[rx_rate]); 791 atomic_inc(&phist_data->snr[snr + 128]); 792 atomic_inc(&phist_data->noise_flr[nf + 128]); 793 atomic_inc(&phist_data->sig_str[rssi + 128]); 794 } 795 796 /* function to reset histogram data during init/reset */ 797 void mwifiex_hist_data_reset(struct mwifiex_private *priv) 798 { 799 int ix; 800 struct mwifiex_histogram_data *phist_data = priv->hist_data; 801 802 atomic_set(&phist_data->num_samples, 0); 803 for (ix = 0; ix < MWIFIEX_MAX_AC_RX_RATES; ix++) 804 atomic_set(&phist_data->rx_rate[ix], 0); 805 for (ix = 0; ix < MWIFIEX_MAX_SNR; ix++) 806 atomic_set(&phist_data->snr[ix], 0); 807 for (ix = 0; ix < MWIFIEX_MAX_NOISE_FLR; ix++) 808 atomic_set(&phist_data->noise_flr[ix], 0); 809 for (ix = 0; ix < MWIFIEX_MAX_SIG_STRENGTH; ix++) 810 atomic_set(&phist_data->sig_str[ix], 0); 811 } 812 813 void *mwifiex_alloc_dma_align_buf(int rx_len, gfp_t flags) 814 { 815 struct sk_buff *skb; 816 int buf_len, pad; 817 818 buf_len = rx_len + MWIFIEX_RX_HEADROOM + MWIFIEX_DMA_ALIGN_SZ; 819 820 skb = __dev_alloc_skb(buf_len, flags); 821 822 if (!skb) 823 return NULL; 824 825 skb_reserve(skb, MWIFIEX_RX_HEADROOM); 826 827 pad = MWIFIEX_ALIGN_ADDR(skb->data, MWIFIEX_DMA_ALIGN_SZ) - 828 (long)skb->data; 829 830 skb_reserve(skb, pad); 831 832 return skb; 833 } 834 EXPORT_SYMBOL_GPL(mwifiex_alloc_dma_align_buf); 835 836 void mwifiex_fw_dump_event(struct mwifiex_private *priv) 837 { 838 mwifiex_send_cmd(priv, HostCmd_CMD_FW_DUMP_EVENT, HostCmd_ACT_GEN_SET, 839 0, NULL, true); 840 } 841 EXPORT_SYMBOL_GPL(mwifiex_fw_dump_event); 842