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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * NXP Wireless LAN device driver: utility functions4 *5 * Copyright 2011-2020 NXP6 */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 16static 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 116static int num_of_items = ARRAY_SIZE(items);117 118/*119 * Firmware initialization complete callback handler.120 *121 * This function wakes up the function waiting on the init122 * wait queue for the firmware initialization to complete.123 */124int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter)125{126 127 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY)128 if (adapter->if_ops.init_fw_port)129 adapter->if_ops.init_fw_port(adapter);130 131 adapter->init_wait_q_woken = true;132 wake_up_interruptible(&adapter->init_wait_q);133 return 0;134}135 136/*137 * This function sends init/shutdown command138 * to firmware.139 */140int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,141 u32 func_init_shutdown)142{143 u16 cmd;144 145 if (func_init_shutdown == MWIFIEX_FUNC_INIT) {146 cmd = HostCmd_CMD_FUNC_INIT;147 } else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) {148 cmd = HostCmd_CMD_FUNC_SHUTDOWN;149 } else {150 mwifiex_dbg(priv->adapter, ERROR,151 "unsupported parameter\n");152 return -1;153 }154 155 return mwifiex_send_cmd(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL, true);156}157EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw);158 159/*160 * IOCTL request handler to set/get debug information.161 *162 * This function collates/sets the information from/to different driver163 * structures.164 */165int mwifiex_get_debug_info(struct mwifiex_private *priv,166 struct mwifiex_debug_info *info)167{168 struct mwifiex_adapter *adapter = priv->adapter;169 170 if (info) {171 info->debug_mask = adapter->debug_mask;172 memcpy(info->packets_out,173 priv->wmm.packets_out,174 sizeof(priv->wmm.packets_out));175 info->curr_tx_buf_size = (u32) adapter->curr_tx_buf_size;176 info->tx_buf_size = (u32) adapter->tx_buf_size;177 info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(priv,178 info->rx_tbl);179 info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(priv,180 info->tx_tbl);181 info->tdls_peer_num = mwifiex_get_tdls_list(priv,182 info->tdls_list);183 info->ps_mode = adapter->ps_mode;184 info->ps_state = adapter->ps_state;185 info->is_deep_sleep = adapter->is_deep_sleep;186 info->pm_wakeup_card_req = adapter->pm_wakeup_card_req;187 info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try;188 info->is_hs_configured = test_bit(MWIFIEX_IS_HS_CONFIGURED,189 &adapter->work_flags);190 info->hs_activated = adapter->hs_activated;191 info->is_cmd_timedout = test_bit(MWIFIEX_IS_CMD_TIMEDOUT,192 &adapter->work_flags);193 info->num_cmd_host_to_card_failure194 = adapter->dbg.num_cmd_host_to_card_failure;195 info->num_cmd_sleep_cfm_host_to_card_failure196 = adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure;197 info->num_tx_host_to_card_failure198 = adapter->dbg.num_tx_host_to_card_failure;199 info->num_event_deauth = adapter->dbg.num_event_deauth;200 info->num_event_disassoc = adapter->dbg.num_event_disassoc;201 info->num_event_link_lost = adapter->dbg.num_event_link_lost;202 info->num_cmd_deauth = adapter->dbg.num_cmd_deauth;203 info->num_cmd_assoc_success =204 adapter->dbg.num_cmd_assoc_success;205 info->num_cmd_assoc_failure =206 adapter->dbg.num_cmd_assoc_failure;207 info->num_tx_timeout = adapter->dbg.num_tx_timeout;208 info->timeout_cmd_id = adapter->dbg.timeout_cmd_id;209 info->timeout_cmd_act = adapter->dbg.timeout_cmd_act;210 memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id,211 sizeof(adapter->dbg.last_cmd_id));212 memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act,213 sizeof(adapter->dbg.last_cmd_act));214 info->last_cmd_index = adapter->dbg.last_cmd_index;215 memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id,216 sizeof(adapter->dbg.last_cmd_resp_id));217 info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index;218 memcpy(info->last_event, adapter->dbg.last_event,219 sizeof(adapter->dbg.last_event));220 info->last_event_index = adapter->dbg.last_event_index;221 memcpy(info->last_mp_wr_bitmap, adapter->dbg.last_mp_wr_bitmap,222 sizeof(adapter->dbg.last_mp_wr_bitmap));223 memcpy(info->last_mp_wr_ports, adapter->dbg.last_mp_wr_ports,224 sizeof(adapter->dbg.last_mp_wr_ports));225 memcpy(info->last_mp_curr_wr_port,226 adapter->dbg.last_mp_curr_wr_port,227 sizeof(adapter->dbg.last_mp_curr_wr_port));228 memcpy(info->last_mp_wr_len, adapter->dbg.last_mp_wr_len,229 sizeof(adapter->dbg.last_mp_wr_len));230 info->last_sdio_mp_index = adapter->dbg.last_sdio_mp_index;231 info->data_sent = adapter->data_sent;232 info->cmd_sent = adapter->cmd_sent;233 info->cmd_resp_received = adapter->cmd_resp_received;234 }235 236 return 0;237}238 239int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf,240 struct mwifiex_debug_info *info)241{242 char *p = buf;243 struct mwifiex_debug_data *d = &items[0];244 size_t size, addr;245 long val;246 int i, j;247 248 if (!info)249 return 0;250 251 for (i = 0; i < num_of_items; i++) {252 p += sprintf(p, "%s=", d[i].name);253 254 size = d[i].size / d[i].num;255 256 if (i < (num_of_items - 3))257 addr = d[i].addr + (size_t)info;258 else /* The last 3 items are struct mwifiex_adapter variables */259 addr = d[i].addr + (size_t)priv->adapter;260 261 for (j = 0; j < d[i].num; j++) {262 switch (size) {263 case 1:264 val = *((u8 *)addr);265 break;266 case 2:267 val = get_unaligned((u16 *)addr);268 break;269 case 4:270 val = get_unaligned((u32 *)addr);271 break;272 case 8:273 val = get_unaligned((long long *)addr);274 break;275 default:276 val = -1;277 break;278 }279 280 p += sprintf(p, "%#lx ", val);281 addr += size;282 }283 284 p += sprintf(p, "\n");285 }286 287 if (info->tx_tbl_num) {288 p += sprintf(p, "Tx BA stream table:\n");289 for (i = 0; i < info->tx_tbl_num; i++)290 p += sprintf(p, "tid = %d, ra = %pM\n",291 info->tx_tbl[i].tid, info->tx_tbl[i].ra);292 }293 294 if (info->rx_tbl_num) {295 p += sprintf(p, "Rx reorder table:\n");296 for (i = 0; i < info->rx_tbl_num; i++) {297 p += sprintf(p, "tid = %d, ta = %pM, ",298 info->rx_tbl[i].tid,299 info->rx_tbl[i].ta);300 p += sprintf(p, "start_win = %d, ",301 info->rx_tbl[i].start_win);302 p += sprintf(p, "win_size = %d, buffer: ",303 info->rx_tbl[i].win_size);304 305 for (j = 0; j < info->rx_tbl[i].win_size; j++)306 p += sprintf(p, "%c ",307 info->rx_tbl[i].buffer[j] ?308 '1' : '0');309 310 p += sprintf(p, "\n");311 }312 }313 314 if (info->tdls_peer_num) {315 p += sprintf(p, "TDLS peer table:\n");316 for (i = 0; i < info->tdls_peer_num; i++) {317 p += sprintf(p, "peer = %pM",318 info->tdls_list[i].peer_addr);319 p += sprintf(p, "\n");320 }321 }322 323 return p - buf;324}325 326static int327mwifiex_parse_mgmt_packet(struct mwifiex_private *priv, u8 *payload, u16 len,328 struct rxpd *rx_pd)329{330 u16 stype;331 u8 category, action_code, *addr2;332 struct ieee80211_hdr *ieee_hdr = (void *)payload;333 334 stype = (le16_to_cpu(ieee_hdr->frame_control) & IEEE80211_FCTL_STYPE);335 336 switch (stype) {337 case IEEE80211_STYPE_ACTION:338 category = *(payload + sizeof(struct ieee80211_hdr));339 switch (category) {340 case WLAN_CATEGORY_PUBLIC:341 action_code = *(payload + sizeof(struct ieee80211_hdr)342 + 1);343 if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) {344 addr2 = ieee_hdr->addr2;345 mwifiex_dbg(priv->adapter, INFO,346 "TDLS discovery response %pM nf=%d, snr=%d\n",347 addr2, rx_pd->nf, rx_pd->snr);348 mwifiex_auto_tdls_update_peer_signal(priv,349 addr2,350 rx_pd->snr,351 rx_pd->nf);352 }353 break;354 case WLAN_CATEGORY_BACK:355 /*we dont indicate BACK action frames to cfg80211*/356 mwifiex_dbg(priv->adapter, INFO,357 "drop BACK action frames");358 return -1;359 default:360 mwifiex_dbg(priv->adapter, INFO,361 "unknown public action frame category %d\n",362 category);363 }364 break;365 default:366 mwifiex_dbg(priv->adapter, INFO,367 "unknown mgmt frame subtype %#x\n", stype);368 return 0;369 }370 371 return 0;372}373 374/* This function sends deauth packet to the kernel. */375void mwifiex_host_mlme_disconnect(struct mwifiex_private *priv,376 u16 reason_code, u8 *sa)377{378 u8 frame_buf[100];379 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)frame_buf;380 381 memset(frame_buf, 0, sizeof(frame_buf));382 mgmt->frame_control = cpu_to_le16(IEEE80211_STYPE_DEAUTH);383 mgmt->duration = 0;384 mgmt->seq_ctrl = 0;385 mgmt->u.deauth.reason_code = cpu_to_le16(reason_code);386 387 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {388 eth_broadcast_addr(mgmt->da);389 memcpy(mgmt->sa,390 priv->curr_bss_params.bss_descriptor.mac_address,391 ETH_ALEN);392 memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);393 priv->auth_flag = 0;394 priv->auth_alg = WLAN_AUTH_NONE;395 } else {396 memcpy(mgmt->da, priv->curr_addr, ETH_ALEN);397 memcpy(mgmt->sa, sa, ETH_ALEN);398 memcpy(mgmt->bssid, priv->curr_addr, ETH_ALEN);399 }400 401 if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP) {402 wiphy_lock(priv->wdev.wiphy);403 cfg80211_rx_mlme_mgmt(priv->netdev, frame_buf, 26);404 wiphy_unlock(priv->wdev.wiphy);405 } else {406 cfg80211_rx_mgmt(&priv->wdev,407 priv->bss_chandef.chan->center_freq,408 0, frame_buf, 26, 0);409 }410}411 412/*413 * This function processes the received management packet and send it414 * to the kernel.415 */416int417mwifiex_process_mgmt_packet(struct mwifiex_private *priv,418 struct sk_buff *skb)419{420 struct rxpd *rx_pd;421 u16 pkt_len;422 struct ieee80211_hdr *ieee_hdr;423 424 if (!skb)425 return -1;426 427 if (!priv->mgmt_frame_mask ||428 priv->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) {429 mwifiex_dbg(priv->adapter, ERROR,430 "do not receive mgmt frames on uninitialized intf");431 return -1;432 }433 434 rx_pd = (struct rxpd *)skb->data;435 pkt_len = le16_to_cpu(rx_pd->rx_pkt_length);436 if (pkt_len < sizeof(struct ieee80211_hdr) + sizeof(pkt_len)) {437 mwifiex_dbg(priv->adapter, ERROR, "invalid rx_pkt_length");438 return -1;439 }440 441 skb_pull(skb, le16_to_cpu(rx_pd->rx_pkt_offset));442 skb_pull(skb, sizeof(pkt_len));443 pkt_len -= sizeof(pkt_len);444 445 ieee_hdr = (void *)skb->data;446 if (ieee80211_is_mgmt(ieee_hdr->frame_control)) {447 if (mwifiex_parse_mgmt_packet(priv, (u8 *)ieee_hdr,448 pkt_len, rx_pd))449 return -1;450 }451 /* Remove address4 */452 memmove(skb->data + sizeof(struct ieee80211_hdr_3addr),453 skb->data + sizeof(struct ieee80211_hdr),454 pkt_len - sizeof(struct ieee80211_hdr));455 456 pkt_len -= ETH_ALEN;457 rx_pd->rx_pkt_length = cpu_to_le16(pkt_len);458 459 if (priv->host_mlme_reg &&460 (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP) &&461 (ieee80211_is_auth(ieee_hdr->frame_control) ||462 ieee80211_is_deauth(ieee_hdr->frame_control) ||463 ieee80211_is_disassoc(ieee_hdr->frame_control))) {464 if (ieee80211_is_auth(ieee_hdr->frame_control)) {465 if (priv->auth_flag & HOST_MLME_AUTH_PENDING) {466 if (priv->auth_alg != WLAN_AUTH_SAE) {467 priv->auth_flag &=468 ~HOST_MLME_AUTH_PENDING;469 priv->auth_flag |=470 HOST_MLME_AUTH_DONE;471 }472 } else {473 return 0;474 }475 476 mwifiex_dbg(priv->adapter, MSG,477 "auth: receive authentication from %pM\n",478 ieee_hdr->addr3);479 } else {480 if (!priv->wdev.connected)481 return 0;482 483 if (ieee80211_is_deauth(ieee_hdr->frame_control)) {484 mwifiex_dbg(priv->adapter, MSG,485 "auth: receive deauth from %pM\n",486 ieee_hdr->addr3);487 priv->auth_flag = 0;488 priv->auth_alg = WLAN_AUTH_NONE;489 } else {490 mwifiex_dbg491 (priv->adapter, MSG,492 "assoc: receive disassoc from %pM\n",493 ieee_hdr->addr3);494 }495 }496 497 cfg80211_rx_mlme_mgmt(priv->netdev, skb->data, pkt_len);498 }499 500 if (priv->adapter->host_mlme_enabled &&501 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP)) {502 if (ieee80211_is_auth(ieee_hdr->frame_control))503 mwifiex_dbg(priv->adapter, MSG,504 "auth: receive auth from %pM\n",505 ieee_hdr->addr2);506 if (ieee80211_is_deauth(ieee_hdr->frame_control))507 mwifiex_dbg(priv->adapter, MSG,508 "auth: receive deauth from %pM\n",509 ieee_hdr->addr2);510 if (ieee80211_is_disassoc(ieee_hdr->frame_control))511 mwifiex_dbg(priv->adapter, MSG,512 "assoc: receive disassoc from %pM\n",513 ieee_hdr->addr2);514 if (ieee80211_is_assoc_req(ieee_hdr->frame_control))515 mwifiex_dbg(priv->adapter, MSG,516 "assoc: receive assoc req from %pM\n",517 ieee_hdr->addr2);518 if (ieee80211_is_reassoc_req(ieee_hdr->frame_control))519 mwifiex_dbg(priv->adapter, MSG,520 "assoc: receive reassoc req from %pM\n",521 ieee_hdr->addr2);522 }523 524 cfg80211_rx_mgmt(&priv->wdev, priv->roc_cfg.chan.center_freq,525 CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len,526 0);527 528 return 0;529}530 531/*532 * This function processes the received packet before sending it to the533 * kernel.534 *535 * It extracts the SKB from the received buffer and sends it to kernel.536 * In case the received buffer does not contain the data in SKB format,537 * the function creates a blank SKB, fills it with the data from the538 * received buffer and then sends this new SKB to the kernel.539 */540int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb)541{542 struct mwifiex_sta_node *src_node;543 struct ethhdr *p_ethhdr;544 545 if (!skb)546 return -1;547 548 priv->stats.rx_bytes += skb->len;549 priv->stats.rx_packets++;550 551 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {552 p_ethhdr = (void *)skb->data;553 src_node = mwifiex_get_sta_entry(priv, p_ethhdr->h_source);554 if (src_node) {555 src_node->stats.last_rx = jiffies;556 src_node->stats.rx_bytes += skb->len;557 src_node->stats.rx_packets++;558 }559 }560 561 skb->dev = priv->netdev;562 skb->protocol = eth_type_trans(skb, priv->netdev);563 skb->ip_summed = CHECKSUM_NONE;564 565 /* This is required only in case of 11n and USB/PCIE as we alloc566 * a buffer of 4K only if its 11N (to be able to receive 4K567 * AMSDU packets). In case of SD we allocate buffers based568 * on the size of packet and hence this is not needed.569 *570 * Modifying the truesize here as our allocation for each571 * skb is 4K but we only receive 2K packets and this cause572 * the kernel to start dropping packets in case where573 * application has allocated buffer based on 2K size i.e.574 * if there a 64K packet received (in IP fragments and575 * application allocates 64K to receive this packet but576 * this packet would almost double up because we allocate577 * each 1.5K fragment in 4K and pass it up. As soon as the578 * 64K limit hits kernel will start to drop rest of the579 * fragments. Currently we fail the Filesndl-ht.scr script580 * for UDP, hence this fix581 */582 if ((priv->adapter->iface_type == MWIFIEX_USB ||583 priv->adapter->iface_type == MWIFIEX_PCIE) &&584 (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))585 skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);586 587 netif_rx(skb);588 return 0;589}590 591/*592 * IOCTL completion callback handler.593 *594 * This function is called when a pending IOCTL is completed.595 *596 * If work queue support is enabled, the function wakes up the597 * corresponding waiting function. Otherwise, it processes the598 * IOCTL response and frees the response buffer.599 */600int mwifiex_complete_cmd(struct mwifiex_adapter *adapter,601 struct cmd_ctrl_node *cmd_node)602{603 WARN_ON(!cmd_node->wait_q_enabled);604 mwifiex_dbg(adapter, CMD, "cmd completed: status=%d\n",605 adapter->cmd_wait_q.status);606 607 *cmd_node->condition = true;608 wake_up_interruptible(&adapter->cmd_wait_q.wait);609 610 return 0;611}612 613/* This function will return the pointer to station entry in station list614 * table which matches specified mac address.615 * This function should be called after acquiring RA list spinlock.616 * NULL is returned if station entry is not found in associated STA list.617 */618struct mwifiex_sta_node *619mwifiex_get_sta_entry(struct mwifiex_private *priv, const u8 *mac)620{621 struct mwifiex_sta_node *node;622 623 if (!mac)624 return NULL;625 626 list_for_each_entry(node, &priv->sta_list, list) {627 if (!memcmp(node->mac_addr, mac, ETH_ALEN))628 return node;629 }630 631 return NULL;632}633 634static struct mwifiex_sta_node *635mwifiex_get_tdls_sta_entry(struct mwifiex_private *priv, u8 status)636{637 struct mwifiex_sta_node *node;638 639 list_for_each_entry(node, &priv->sta_list, list) {640 if (node->tdls_status == status)641 return node;642 }643 644 return NULL;645}646 647/* If tdls channel switching is on-going, tx data traffic should be648 * blocked until the switching stage completed.649 */650u8 mwifiex_is_tdls_chan_switching(struct mwifiex_private *priv)651{652 struct mwifiex_sta_node *sta_ptr;653 654 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))655 return false;656 657 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_CHAN_SWITCHING);658 if (sta_ptr)659 return true;660 661 return false;662}663 664u8 mwifiex_is_tdls_off_chan(struct mwifiex_private *priv)665{666 struct mwifiex_sta_node *sta_ptr;667 668 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))669 return false;670 671 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_IN_OFF_CHAN);672 if (sta_ptr)673 return true;674 675 return false;676}677 678/* If tdls channel switching is on-going or tdls operate on off-channel,679 * cmd path should be blocked until tdls switched to base-channel.680 */681u8 mwifiex_is_send_cmd_allowed(struct mwifiex_private *priv)682{683 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))684 return true;685 686 if (mwifiex_is_tdls_chan_switching(priv) ||687 mwifiex_is_tdls_off_chan(priv))688 return false;689 690 return true;691}692 693/* This function will add a sta_node entry to associated station list694 * table with the given mac address.695 * If entry exist already, existing entry is returned.696 * If received mac address is NULL, NULL is returned.697 */698struct mwifiex_sta_node *699mwifiex_add_sta_entry(struct mwifiex_private *priv, const u8 *mac)700{701 struct mwifiex_sta_node *node;702 703 if (!mac)704 return NULL;705 706 spin_lock_bh(&priv->sta_list_spinlock);707 node = mwifiex_get_sta_entry(priv, mac);708 if (node)709 goto done;710 711 node = kzalloc(sizeof(*node), GFP_ATOMIC);712 if (!node)713 goto done;714 715 memcpy(node->mac_addr, mac, ETH_ALEN);716 list_add_tail(&node->list, &priv->sta_list);717 718done:719 spin_unlock_bh(&priv->sta_list_spinlock);720 return node;721}722 723/* This function will search for HT IE in association request IEs724 * and set station HT parameters accordingly.725 */726void727mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies,728 int ies_len, struct mwifiex_sta_node *node)729{730 struct ieee_types_header *ht_cap_ie;731 const struct ieee80211_ht_cap *ht_cap;732 733 if (!ies)734 return;735 736 ht_cap_ie = (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies,737 ies_len);738 if (ht_cap_ie) {739 ht_cap = (void *)(ht_cap_ie + 1);740 node->is_11n_enabled = 1;741 node->max_amsdu = le16_to_cpu(ht_cap->cap_info) &742 IEEE80211_HT_CAP_MAX_AMSDU ?743 MWIFIEX_TX_DATA_BUF_SIZE_8K :744 MWIFIEX_TX_DATA_BUF_SIZE_4K;745 } else {746 node->is_11n_enabled = 0;747 }748 749 return;750}751 752/* This function will delete a station entry from station list */753void mwifiex_del_sta_entry(struct mwifiex_private *priv, const u8 *mac)754{755 struct mwifiex_sta_node *node;756 757 spin_lock_bh(&priv->sta_list_spinlock);758 759 node = mwifiex_get_sta_entry(priv, mac);760 if (node) {761 list_del(&node->list);762 kfree(node);763 }764 765 spin_unlock_bh(&priv->sta_list_spinlock);766 return;767}768 769/* This function will delete all stations from associated station list. */770void mwifiex_del_all_sta_list(struct mwifiex_private *priv)771{772 struct mwifiex_sta_node *node, *tmp;773 774 spin_lock_bh(&priv->sta_list_spinlock);775 776 list_for_each_entry_safe(node, tmp, &priv->sta_list, list) {777 list_del(&node->list);778 kfree(node);779 }780 781 INIT_LIST_HEAD(&priv->sta_list);782 spin_unlock_bh(&priv->sta_list_spinlock);783 return;784}785 786/* This function adds histogram data to histogram array*/787void mwifiex_hist_data_add(struct mwifiex_private *priv,788 u8 rx_rate, s8 snr, s8 nflr)789{790 struct mwifiex_histogram_data *phist_data = priv->hist_data;791 792 if (atomic_read(&phist_data->num_samples) > MWIFIEX_HIST_MAX_SAMPLES)793 mwifiex_hist_data_reset(priv);794 mwifiex_hist_data_set(priv, rx_rate, snr, nflr);795}796 797/* function to add histogram record */798void mwifiex_hist_data_set(struct mwifiex_private *priv, u8 rx_rate, s8 snr,799 s8 nflr)800{801 struct mwifiex_histogram_data *phist_data = priv->hist_data;802 s8 nf = -nflr;803 s8 rssi = snr - nflr;804 805 atomic_inc(&phist_data->num_samples);806 atomic_inc(&phist_data->rx_rate[rx_rate]);807 atomic_inc(&phist_data->snr[snr + 128]);808 atomic_inc(&phist_data->noise_flr[nf + 128]);809 atomic_inc(&phist_data->sig_str[rssi + 128]);810}811 812/* function to reset histogram data during init/reset */813void mwifiex_hist_data_reset(struct mwifiex_private *priv)814{815 int ix;816 struct mwifiex_histogram_data *phist_data = priv->hist_data;817 818 atomic_set(&phist_data->num_samples, 0);819 for (ix = 0; ix < MWIFIEX_MAX_AC_RX_RATES; ix++)820 atomic_set(&phist_data->rx_rate[ix], 0);821 for (ix = 0; ix < MWIFIEX_MAX_SNR; ix++)822 atomic_set(&phist_data->snr[ix], 0);823 for (ix = 0; ix < MWIFIEX_MAX_NOISE_FLR; ix++)824 atomic_set(&phist_data->noise_flr[ix], 0);825 for (ix = 0; ix < MWIFIEX_MAX_SIG_STRENGTH; ix++)826 atomic_set(&phist_data->sig_str[ix], 0);827}828 829void *mwifiex_alloc_dma_align_buf(int rx_len, gfp_t flags)830{831 struct sk_buff *skb;832 int buf_len, pad;833 834 buf_len = rx_len + MWIFIEX_RX_HEADROOM + MWIFIEX_DMA_ALIGN_SZ;835 836 skb = __dev_alloc_skb(buf_len, flags);837 838 if (!skb)839 return NULL;840 841 skb_reserve(skb, MWIFIEX_RX_HEADROOM);842 843 pad = MWIFIEX_ALIGN_ADDR(skb->data, MWIFIEX_DMA_ALIGN_SZ) -844 (long)skb->data;845 846 skb_reserve(skb, pad);847 848 return skb;849}850EXPORT_SYMBOL_GPL(mwifiex_alloc_dma_align_buf);851 852void mwifiex_fw_dump_event(struct mwifiex_private *priv)853{854 mwifiex_send_cmd(priv, HostCmd_CMD_FW_DUMP_EVENT, HostCmd_ACT_GEN_SET,855 0, NULL, true);856}857EXPORT_SYMBOL_GPL(mwifiex_fw_dump_event);858