2 * Marvell Wireless LAN device driver: utility functions
4 * Copyright (C) 2011-2014, Marvell International Ltd.
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.
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.
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},
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},
128 static int num_of_items = ARRAY_SIZE(items);
131 * Firmware initialization complete callback handler.
133 * This function wakes up the function waiting on the init
134 * wait queue for the firmware initialization to complete.
136 int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter)
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);
143 adapter->init_wait_q_woken = true;
144 wake_up_interruptible(&adapter->init_wait_q);
149 * Firmware shutdown complete callback handler.
151 * This function sets the hardware status to not ready and wakes up
152 * the function waiting on the init wait queue for the firmware
153 * shutdown to complete.
155 int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter)
157 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY;
158 adapter->init_wait_q_woken = true;
159 wake_up_interruptible(&adapter->init_wait_q);
164 * This function sends init/shutdown command
167 int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,
168 u32 func_init_shutdown)
172 if (func_init_shutdown == MWIFIEX_FUNC_INIT) {
173 cmd = HostCmd_CMD_FUNC_INIT;
174 } else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) {
175 cmd = HostCmd_CMD_FUNC_SHUTDOWN;
177 mwifiex_dbg(priv->adapter, ERROR,
178 "unsupported parameter\n");
182 return mwifiex_send_cmd(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL, true);
184 EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw);
187 * IOCTL request handler to set/get debug information.
189 * This function collates/sets the information from/to different driver
192 int mwifiex_get_debug_info(struct mwifiex_private *priv,
193 struct mwifiex_debug_info *info)
195 struct mwifiex_adapter *adapter = priv->adapter;
198 info->debug_mask = adapter->debug_mask;
199 memcpy(info->packets_out,
200 priv->wmm.packets_out,
201 sizeof(priv->wmm.packets_out));
202 info->curr_tx_buf_size = (u32) adapter->curr_tx_buf_size;
203 info->tx_buf_size = (u32) adapter->tx_buf_size;
204 info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(priv,
206 info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(priv,
208 info->tdls_peer_num = mwifiex_get_tdls_list(priv,
210 info->ps_mode = adapter->ps_mode;
211 info->ps_state = adapter->ps_state;
212 info->is_deep_sleep = adapter->is_deep_sleep;
213 info->pm_wakeup_card_req = adapter->pm_wakeup_card_req;
214 info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try;
215 info->is_hs_configured = adapter->is_hs_configured;
216 info->hs_activated = adapter->hs_activated;
217 info->is_cmd_timedout = adapter->is_cmd_timedout;
218 info->num_cmd_host_to_card_failure
219 = adapter->dbg.num_cmd_host_to_card_failure;
220 info->num_cmd_sleep_cfm_host_to_card_failure
221 = adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure;
222 info->num_tx_host_to_card_failure
223 = adapter->dbg.num_tx_host_to_card_failure;
224 info->num_event_deauth = adapter->dbg.num_event_deauth;
225 info->num_event_disassoc = adapter->dbg.num_event_disassoc;
226 info->num_event_link_lost = adapter->dbg.num_event_link_lost;
227 info->num_cmd_deauth = adapter->dbg.num_cmd_deauth;
228 info->num_cmd_assoc_success =
229 adapter->dbg.num_cmd_assoc_success;
230 info->num_cmd_assoc_failure =
231 adapter->dbg.num_cmd_assoc_failure;
232 info->num_tx_timeout = adapter->dbg.num_tx_timeout;
233 info->timeout_cmd_id = adapter->dbg.timeout_cmd_id;
234 info->timeout_cmd_act = adapter->dbg.timeout_cmd_act;
235 memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id,
236 sizeof(adapter->dbg.last_cmd_id));
237 memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act,
238 sizeof(adapter->dbg.last_cmd_act));
239 info->last_cmd_index = adapter->dbg.last_cmd_index;
240 memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id,
241 sizeof(adapter->dbg.last_cmd_resp_id));
242 info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index;
243 memcpy(info->last_event, adapter->dbg.last_event,
244 sizeof(adapter->dbg.last_event));
245 info->last_event_index = adapter->dbg.last_event_index;
246 memcpy(info->last_mp_wr_bitmap, adapter->dbg.last_mp_wr_bitmap,
247 sizeof(adapter->dbg.last_mp_wr_bitmap));
248 memcpy(info->last_mp_wr_ports, adapter->dbg.last_mp_wr_ports,
249 sizeof(adapter->dbg.last_mp_wr_ports));
250 memcpy(info->last_mp_curr_wr_port,
251 adapter->dbg.last_mp_curr_wr_port,
252 sizeof(adapter->dbg.last_mp_curr_wr_port));
253 memcpy(info->last_mp_wr_len, adapter->dbg.last_mp_wr_len,
254 sizeof(adapter->dbg.last_mp_wr_len));
255 info->last_sdio_mp_index = adapter->dbg.last_sdio_mp_index;
256 info->data_sent = adapter->data_sent;
257 info->cmd_sent = adapter->cmd_sent;
258 info->cmd_resp_received = adapter->cmd_resp_received;
264 int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf,
265 struct mwifiex_debug_info *info)
268 struct mwifiex_debug_data *d = &items[0];
276 for (i = 0; i < num_of_items; i++) {
277 p += sprintf(p, "%s=", d[i].name);
279 size = d[i].size / d[i].num;
281 if (i < (num_of_items - 3))
282 addr = d[i].addr + (size_t)info;
283 else /* The last 3 items are struct mwifiex_adapter variables */
284 addr = d[i].addr + (size_t)priv->adapter;
286 for (j = 0; j < d[i].num; j++) {
292 val = *((u16 *)addr);
295 val = *((u32 *)addr);
298 val = *((long long *)addr);
305 p += sprintf(p, "%#lx ", val);
309 p += sprintf(p, "\n");
312 if (info->tx_tbl_num) {
313 p += sprintf(p, "Tx BA stream table:\n");
314 for (i = 0; i < info->tx_tbl_num; i++)
315 p += sprintf(p, "tid = %d, ra = %pM\n",
316 info->tx_tbl[i].tid, info->tx_tbl[i].ra);
319 if (info->rx_tbl_num) {
320 p += sprintf(p, "Rx reorder table:\n");
321 for (i = 0; i < info->rx_tbl_num; i++) {
322 p += sprintf(p, "tid = %d, ta = %pM, ",
325 p += sprintf(p, "start_win = %d, ",
326 info->rx_tbl[i].start_win);
327 p += sprintf(p, "win_size = %d, buffer: ",
328 info->rx_tbl[i].win_size);
330 for (j = 0; j < info->rx_tbl[i].win_size; j++)
331 p += sprintf(p, "%c ",
332 info->rx_tbl[i].buffer[j] ?
335 p += sprintf(p, "\n");
339 if (info->tdls_peer_num) {
340 p += sprintf(p, "TDLS peer table:\n");
341 for (i = 0; i < info->tdls_peer_num; i++) {
342 p += sprintf(p, "peer = %pM",
343 info->tdls_list[i].peer_addr);
344 p += sprintf(p, "\n");
352 mwifiex_parse_mgmt_packet(struct mwifiex_private *priv, u8 *payload, u16 len,
356 u8 category, action_code, *addr2;
357 struct ieee80211_hdr *ieee_hdr = (void *)payload;
359 stype = (le16_to_cpu(ieee_hdr->frame_control) & IEEE80211_FCTL_STYPE);
362 case IEEE80211_STYPE_ACTION:
363 category = *(payload + sizeof(struct ieee80211_hdr));
365 case WLAN_CATEGORY_PUBLIC:
366 action_code = *(payload + sizeof(struct ieee80211_hdr)
368 if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) {
369 addr2 = ieee_hdr->addr2;
370 mwifiex_dbg(priv->adapter, INFO,
371 "TDLS discovery response %pM nf=%d, snr=%d\n",
372 addr2, rx_pd->nf, rx_pd->snr);
373 mwifiex_auto_tdls_update_peer_signal(priv,
379 case WLAN_CATEGORY_BACK:
380 /*we dont indicate BACK action frames to cfg80211*/
381 mwifiex_dbg(priv->adapter, INFO,
382 "drop BACK action frames");
385 mwifiex_dbg(priv->adapter, INFO,
386 "unknown public action frame category %d\n",
391 mwifiex_dbg(priv->adapter, INFO,
392 "unknown mgmt frame subtype %#x\n", stype);
399 * This function processes the received management packet and send it
403 mwifiex_process_mgmt_packet(struct mwifiex_private *priv,
408 struct ieee80211_hdr *ieee_hdr;
413 if (!priv->mgmt_frame_mask ||
414 priv->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) {
415 mwifiex_dbg(priv->adapter, ERROR,
416 "do not receive mgmt frames on uninitialized intf");
420 rx_pd = (struct rxpd *)skb->data;
422 skb_pull(skb, le16_to_cpu(rx_pd->rx_pkt_offset));
423 skb_pull(skb, sizeof(pkt_len));
425 pkt_len = le16_to_cpu(rx_pd->rx_pkt_length);
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,
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));
438 pkt_len -= ETH_ALEN + sizeof(pkt_len);
439 rx_pd->rx_pkt_length = cpu_to_le16(pkt_len);
441 cfg80211_rx_mgmt(&priv->wdev, priv->roc_cfg.chan.center_freq,
442 CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len,
449 * This function processes the received packet before sending it to the
452 * It extracts the SKB from the received buffer and sends it to kernel.
453 * In case the received buffer does not contain the data in SKB format,
454 * the function creates a blank SKB, fills it with the data from the
455 * received buffer and then sends this new SKB to the kernel.
457 int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb)
459 struct mwifiex_sta_node *src_node;
460 struct ethhdr *p_ethhdr;
465 priv->stats.rx_bytes += skb->len;
466 priv->stats.rx_packets++;
468 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
469 p_ethhdr = (void *)skb->data;
470 src_node = mwifiex_get_sta_entry(priv, p_ethhdr->h_source);
472 src_node->stats.last_rx = jiffies;
473 src_node->stats.rx_bytes += skb->len;
474 src_node->stats.rx_packets++;
478 skb->dev = priv->netdev;
479 skb->protocol = eth_type_trans(skb, priv->netdev);
480 skb->ip_summed = CHECKSUM_NONE;
482 /* This is required only in case of 11n and USB/PCIE as we alloc
483 * a buffer of 4K only if its 11N (to be able to receive 4K
484 * AMSDU packets). In case of SD we allocate buffers based
485 * on the size of packet and hence this is not needed.
487 * Modifying the truesize here as our allocation for each
488 * skb is 4K but we only receive 2K packets and this cause
489 * the kernel to start dropping packets in case where
490 * application has allocated buffer based on 2K size i.e.
491 * if there a 64K packet received (in IP fragments and
492 * application allocates 64K to receive this packet but
493 * this packet would almost double up because we allocate
494 * each 1.5K fragment in 4K and pass it up. As soon as the
495 * 64K limit hits kernel will start to drop rest of the
496 * fragments. Currently we fail the Filesndl-ht.scr script
497 * for UDP, hence this fix
499 if ((priv->adapter->iface_type == MWIFIEX_USB ||
500 priv->adapter->iface_type == MWIFIEX_PCIE) &&
501 (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))
502 skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);
513 * IOCTL completion callback handler.
515 * This function is called when a pending IOCTL is completed.
517 * If work queue support is enabled, the function wakes up the
518 * corresponding waiting function. Otherwise, it processes the
519 * IOCTL response and frees the response buffer.
521 int mwifiex_complete_cmd(struct mwifiex_adapter *adapter,
522 struct cmd_ctrl_node *cmd_node)
524 WARN_ON(!cmd_node->wait_q_enabled);
525 mwifiex_dbg(adapter, CMD, "cmd completed: status=%d\n",
526 adapter->cmd_wait_q.status);
528 *cmd_node->condition = true;
529 wake_up_interruptible(&adapter->cmd_wait_q.wait);
534 /* This function will return the pointer to station entry in station list
535 * table which matches specified mac address.
536 * This function should be called after acquiring RA list spinlock.
537 * NULL is returned if station entry is not found in associated STA list.
539 struct mwifiex_sta_node *
540 mwifiex_get_sta_entry(struct mwifiex_private *priv, const u8 *mac)
542 struct mwifiex_sta_node *node;
547 list_for_each_entry(node, &priv->sta_list, list) {
548 if (!memcmp(node->mac_addr, mac, ETH_ALEN))
555 static struct mwifiex_sta_node *
556 mwifiex_get_tdls_sta_entry(struct mwifiex_private *priv, u8 status)
558 struct mwifiex_sta_node *node;
560 list_for_each_entry(node, &priv->sta_list, list) {
561 if (node->tdls_status == status)
568 /* If tdls channel switching is on-going, tx data traffic should be
569 * blocked until the switching stage completed.
571 u8 mwifiex_is_tdls_chan_switching(struct mwifiex_private *priv)
573 struct mwifiex_sta_node *sta_ptr;
575 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
578 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_CHAN_SWITCHING);
585 u8 mwifiex_is_tdls_off_chan(struct mwifiex_private *priv)
587 struct mwifiex_sta_node *sta_ptr;
589 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
592 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_IN_OFF_CHAN);
599 /* If tdls channel switching is on-going or tdls operate on off-channel,
600 * cmd path should be blocked until tdls switched to base-channel.
602 u8 mwifiex_is_send_cmd_allowed(struct mwifiex_private *priv)
604 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
607 if (mwifiex_is_tdls_chan_switching(priv) ||
608 mwifiex_is_tdls_off_chan(priv))
614 /* This function will add a sta_node entry to associated station list
615 * table with the given mac address.
616 * If entry exist already, existing entry is returned.
617 * If received mac address is NULL, NULL is returned.
619 struct mwifiex_sta_node *
620 mwifiex_add_sta_entry(struct mwifiex_private *priv, const u8 *mac)
622 struct mwifiex_sta_node *node;
628 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
629 node = mwifiex_get_sta_entry(priv, mac);
633 node = kzalloc(sizeof(*node), GFP_ATOMIC);
637 memcpy(node->mac_addr, mac, ETH_ALEN);
638 list_add_tail(&node->list, &priv->sta_list);
641 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
645 /* This function will search for HT IE in association request IEs
646 * and set station HT parameters accordingly.
649 mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies,
650 int ies_len, struct mwifiex_sta_node *node)
652 struct ieee_types_header *ht_cap_ie;
653 const struct ieee80211_ht_cap *ht_cap;
658 ht_cap_ie = (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies,
661 ht_cap = (void *)(ht_cap_ie + 1);
662 node->is_11n_enabled = 1;
663 node->max_amsdu = le16_to_cpu(ht_cap->cap_info) &
664 IEEE80211_HT_CAP_MAX_AMSDU ?
665 MWIFIEX_TX_DATA_BUF_SIZE_8K :
666 MWIFIEX_TX_DATA_BUF_SIZE_4K;
668 node->is_11n_enabled = 0;
674 /* This function will delete a station entry from station list */
675 void mwifiex_del_sta_entry(struct mwifiex_private *priv, const u8 *mac)
677 struct mwifiex_sta_node *node;
680 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
682 node = mwifiex_get_sta_entry(priv, mac);
684 list_del(&node->list);
688 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
692 /* This function will delete all stations from associated station list. */
693 void mwifiex_del_all_sta_list(struct mwifiex_private *priv)
695 struct mwifiex_sta_node *node, *tmp;
698 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
700 list_for_each_entry_safe(node, tmp, &priv->sta_list, list) {
701 list_del(&node->list);
705 INIT_LIST_HEAD(&priv->sta_list);
706 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
710 /* This function adds histogram data to histogram array*/
711 void mwifiex_hist_data_add(struct mwifiex_private *priv,
712 u8 rx_rate, s8 snr, s8 nflr)
714 struct mwifiex_histogram_data *phist_data = priv->hist_data;
716 if (atomic_read(&phist_data->num_samples) > MWIFIEX_HIST_MAX_SAMPLES)
717 mwifiex_hist_data_reset(priv);
718 mwifiex_hist_data_set(priv, rx_rate, snr, nflr);
721 /* function to add histogram record */
722 void mwifiex_hist_data_set(struct mwifiex_private *priv, u8 rx_rate, s8 snr,
725 struct mwifiex_histogram_data *phist_data = priv->hist_data;
727 s8 rssi = snr - nflr;
729 atomic_inc(&phist_data->num_samples);
730 atomic_inc(&phist_data->rx_rate[rx_rate]);
731 atomic_inc(&phist_data->snr[snr + 128]);
732 atomic_inc(&phist_data->noise_flr[nf + 128]);
733 atomic_inc(&phist_data->sig_str[rssi + 128]);
736 /* function to reset histogram data during init/reset */
737 void mwifiex_hist_data_reset(struct mwifiex_private *priv)
740 struct mwifiex_histogram_data *phist_data = priv->hist_data;
742 atomic_set(&phist_data->num_samples, 0);
743 for (ix = 0; ix < MWIFIEX_MAX_AC_RX_RATES; ix++)
744 atomic_set(&phist_data->rx_rate[ix], 0);
745 for (ix = 0; ix < MWIFIEX_MAX_SNR; ix++)
746 atomic_set(&phist_data->snr[ix], 0);
747 for (ix = 0; ix < MWIFIEX_MAX_NOISE_FLR; ix++)
748 atomic_set(&phist_data->noise_flr[ix], 0);
749 for (ix = 0; ix < MWIFIEX_MAX_SIG_STRENGTH; ix++)
750 atomic_set(&phist_data->sig_str[ix], 0);
753 void *mwifiex_alloc_dma_align_buf(int rx_len, gfp_t flags)
758 buf_len = rx_len + MWIFIEX_RX_HEADROOM + MWIFIEX_DMA_ALIGN_SZ;
760 skb = __dev_alloc_skb(buf_len, flags);
765 skb_reserve(skb, MWIFIEX_RX_HEADROOM);
767 pad = MWIFIEX_ALIGN_ADDR(skb->data, MWIFIEX_DMA_ALIGN_SZ) -
770 skb_reserve(skb, pad);
774 EXPORT_SYMBOL_GPL(mwifiex_alloc_dma_align_buf);