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Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
[deliverable/linux.git] / drivers / net / wireless / marvell / mwifiex / util.c
CommitLineData
5e6e3a92
BZ		 1/*
2 * Marvell Wireless LAN device driver: utility functions
3 *
65da33f5 4 * Copyright (C) 2011-2014, Marvell International Ltd.
5e6e3a92
BZ		 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
bb5097fe 28static struct mwifiex_debug_data items[] = {
c687a007
ZL		 29 {"debug_mask", item_size(debug_mask),
30 item_addr(debug_mask), 1},
bb5097fe
XH		 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 {"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure),
82 item_addr(num_cmd_host_to_card_failure), 1},
83 {"num_cmd_sleep_cfm_fail",
84 item_size(num_cmd_sleep_cfm_host_to_card_failure),
85 item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1},
86 {"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure),
87 item_addr(num_tx_host_to_card_failure), 1},
88 {"num_evt_deauth", item_size(num_event_deauth),
89 item_addr(num_event_deauth), 1},
90 {"num_evt_disassoc", item_size(num_event_disassoc),
91 item_addr(num_event_disassoc), 1},
92 {"num_evt_link_lost", item_size(num_event_link_lost),
93 item_addr(num_event_link_lost), 1},
94 {"num_cmd_deauth", item_size(num_cmd_deauth),
95 item_addr(num_cmd_deauth), 1},
96 {"num_cmd_assoc_ok", item_size(num_cmd_assoc_success),
97 item_addr(num_cmd_assoc_success), 1},
98 {"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure),
99 item_addr(num_cmd_assoc_failure), 1},
100 {"cmd_sent", item_size(cmd_sent),
101 item_addr(cmd_sent), 1},
102 {"data_sent", item_size(data_sent),
103 item_addr(data_sent), 1},
104 {"cmd_resp_received", item_size(cmd_resp_received),
105 item_addr(cmd_resp_received), 1},
106 {"event_received", item_size(event_received),
107 item_addr(event_received), 1},
108
109 /* variables defined in struct mwifiex_adapter */
110 {"cmd_pending", adapter_item_size(cmd_pending),
111 adapter_item_addr(cmd_pending), 1},
112 {"tx_pending", adapter_item_size(tx_pending),
113 adapter_item_addr(tx_pending), 1},
114 {"rx_pending", adapter_item_size(rx_pending),
115 adapter_item_addr(rx_pending), 1},
116};
117
118static int num_of_items = ARRAY_SIZE(items);
119
5e6e3a92
BZ		 120/*
121 * Firmware initialization complete callback handler.
122 *
123 * This function wakes up the function waiting on the init
124 * wait queue for the firmware initialization to complete.
125 */
126int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter)
127{
128
39875099
ZL		 129 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY)
130 if (adapter->if_ops.init_fw_port)
131 adapter->if_ops.init_fw_port(adapter);
132
5e6e3a92
BZ		 133 adapter->init_wait_q_woken = true;
134 wake_up_interruptible(&adapter->init_wait_q);
135 return 0;
136}
137
138/*
139 * Firmware shutdown complete callback handler.
140 *
141 * This function sets the hardware status to not ready and wakes up
142 * the function waiting on the init wait queue for the firmware
143 * shutdown to complete.
144 */
145int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter)
146{
147 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY;
148 adapter->init_wait_q_woken = true;
149 wake_up_interruptible(&adapter->init_wait_q);
150 return 0;
151}
152
153/*
600f5d90 154 * This function sends init/shutdown command
5e6e3a92 155 * to firmware.
5e6e3a92 156 */
600f5d90
AK		 157int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,
158 u32 func_init_shutdown)
5e6e3a92 159{
5e6e3a92
BZ		 160 u16 cmd;
161
162 if (func_init_shutdown == MWIFIEX_FUNC_INIT) {
163 cmd = HostCmd_CMD_FUNC_INIT;
164 } else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) {
165 cmd = HostCmd_CMD_FUNC_SHUTDOWN;
166 } else {
acebe8c1
ZL		 167 mwifiex_dbg(priv->adapter, ERROR,
168 "unsupported parameter\n");
5e6e3a92
BZ		 169 return -1;
170 }
171
fa0ecbb9 172 return mwifiex_send_cmd(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL, true);
5e6e3a92 173}
600f5d90 174EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw);
5e6e3a92
BZ		 175
176/*
177 * IOCTL request handler to set/get debug information.
178 *
179 * This function collates/sets the information from/to different driver
180 * structures.
181 */
182int mwifiex_get_debug_info(struct mwifiex_private *priv,
183 struct mwifiex_debug_info *info)
184{
185 struct mwifiex_adapter *adapter = priv->adapter;
186
187 if (info) {
c687a007 188 info->debug_mask = adapter->debug_mask;
5e6e3a92
BZ		 189 memcpy(info->packets_out,
190 priv->wmm.packets_out,
191 sizeof(priv->wmm.packets_out));
5e3175fb 192 info->curr_tx_buf_size = (u32) adapter->curr_tx_buf_size;
5e6e3a92 193 info->tx_buf_size = (u32) adapter->tx_buf_size;
c65a30f3
YAP		 194 info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(priv,
195 info->rx_tbl);
196 info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(priv,
197 info->tx_tbl);
72df6310
XH		 198 info->tdls_peer_num = mwifiex_get_tdls_list(priv,
199 info->tdls_list);
5e6e3a92
BZ		 200 info->ps_mode = adapter->ps_mode;
201 info->ps_state = adapter->ps_state;
202 info->is_deep_sleep = adapter->is_deep_sleep;
203 info->pm_wakeup_card_req = adapter->pm_wakeup_card_req;
204 info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try;
205 info->is_hs_configured = adapter->is_hs_configured;
206 info->hs_activated = adapter->hs_activated;
0c9c4a09 207 info->is_cmd_timedout = adapter->is_cmd_timedout;
5e6e3a92 208 info->num_cmd_host_to_card_failure
c65a30f3 209 = adapter->dbg.num_cmd_host_to_card_failure;
5e6e3a92
BZ		 210 info->num_cmd_sleep_cfm_host_to_card_failure
211 = adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure;
212 info->num_tx_host_to_card_failure
c65a30f3 213 = adapter->dbg.num_tx_host_to_card_failure;
5e6e3a92
BZ		 214 info->num_event_deauth = adapter->dbg.num_event_deauth;
215 info->num_event_disassoc = adapter->dbg.num_event_disassoc;
216 info->num_event_link_lost = adapter->dbg.num_event_link_lost;
217 info->num_cmd_deauth = adapter->dbg.num_cmd_deauth;
218 info->num_cmd_assoc_success =
c65a30f3 219 adapter->dbg.num_cmd_assoc_success;
5e6e3a92 220 info->num_cmd_assoc_failure =
c65a30f3 221 adapter->dbg.num_cmd_assoc_failure;
5e6e3a92 222 info->num_tx_timeout = adapter->dbg.num_tx_timeout;
5e6e3a92
BZ		 223 info->timeout_cmd_id = adapter->dbg.timeout_cmd_id;
224 info->timeout_cmd_act = adapter->dbg.timeout_cmd_act;
225 memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id,
226 sizeof(adapter->dbg.last_cmd_id));
227 memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act,
228 sizeof(adapter->dbg.last_cmd_act));
229 info->last_cmd_index = adapter->dbg.last_cmd_index;
230 memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id,
231 sizeof(adapter->dbg.last_cmd_resp_id));
232 info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index;
233 memcpy(info->last_event, adapter->dbg.last_event,
234 sizeof(adapter->dbg.last_event));
235 info->last_event_index = adapter->dbg.last_event_index;
236 info->data_sent = adapter->data_sent;
237 info->cmd_sent = adapter->cmd_sent;
238 info->cmd_resp_received = adapter->cmd_resp_received;
239 }
240
241 return 0;
242}
243
bb5097fe
XH		 244int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf,
245 struct mwifiex_debug_info *info)
246{
247 char *p = buf;
248 struct mwifiex_debug_data *d = &items[0];
249 size_t size, addr;
250 long val;
251 int i, j;
252
253 if (!info)
254 return 0;
255
256 for (i = 0; i < num_of_items; i++) {
257 p += sprintf(p, "%s=", d[i].name);
258
259 size = d[i].size / d[i].num;
260
261 if (i < (num_of_items - 3))
262 addr = d[i].addr + (size_t)info;
263 else /* The last 3 items are struct mwifiex_adapter variables */
264 addr = d[i].addr + (size_t)priv->adapter;
265
266 for (j = 0; j < d[i].num; j++) {
267 switch (size) {
268 case 1:
269 val = *((u8 *)addr);
270 break;
271 case 2:
272 val = *((u16 *)addr);
273 break;
274 case 4:
275 val = *((u32 *)addr);
276 break;
277 case 8:
278 val = *((long long *)addr);
279 break;
280 default:
281 val = -1;
282 break;
283 }
284
285 p += sprintf(p, "%#lx ", val);
286 addr += size;
287 }
288
289 p += sprintf(p, "\n");
290 }
291
292 if (info->tx_tbl_num) {
293 p += sprintf(p, "Tx BA stream table:\n");
294 for (i = 0; i < info->tx_tbl_num; i++)
295 p += sprintf(p, "tid = %d, ra = %pM\n",
296 info->tx_tbl[i].tid, info->tx_tbl[i].ra);
297 }
298
299 if (info->rx_tbl_num) {
300 p += sprintf(p, "Rx reorder table:\n");
301 for (i = 0; i < info->rx_tbl_num; i++) {
302 p += sprintf(p, "tid = %d, ta = %pM, ",
303 info->rx_tbl[i].tid,
304 info->rx_tbl[i].ta);
305 p += sprintf(p, "start_win = %d, ",
306 info->rx_tbl[i].start_win);
307 p += sprintf(p, "win_size = %d, buffer: ",
308 info->rx_tbl[i].win_size);
309
310 for (j = 0; j < info->rx_tbl[i].win_size; j++)
311 p += sprintf(p, "%c ",
312 info->rx_tbl[i].buffer[j] ?
313 '1' : '0');
314
315 p += sprintf(p, "\n");
316 }
317 }
318
319 if (info->tdls_peer_num) {
320 p += sprintf(p, "TDLS peer table:\n");
321 for (i = 0; i < info->tdls_peer_num; i++) {
322 p += sprintf(p, "peer = %pM",
323 info->tdls_list[i].peer_addr);
324 p += sprintf(p, "\n");
325 }
326 }
327
328 return p - buf;
329}
330
72e5aa8d
AP		 331static int
332mwifiex_parse_mgmt_packet(struct mwifiex_private *priv, u8 *payload, u16 len,
333 struct rxpd *rx_pd)
334{
335 u16 stype;
3e6f8a4b 336 u8 category, action_code, *addr2;
72e5aa8d
AP		 337 struct ieee80211_hdr *ieee_hdr = (void *)payload;
338
51974611 339 stype = (le16_to_cpu(ieee_hdr->frame_control) & IEEE80211_FCTL_STYPE);
72e5aa8d
AP		 340
341 switch (stype) {
342 case IEEE80211_STYPE_ACTION:
343 category = *(payload + sizeof(struct ieee80211_hdr));
3e6f8a4b
AP		 344 switch (category) {
345 case WLAN_CATEGORY_PUBLIC:
346 action_code = *(payload + sizeof(struct ieee80211_hdr)
347 + 1);
348 if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) {
349 addr2 = ieee_hdr->addr2;
350 mwifiex_dbg(priv->adapter, INFO,
351 "TDLS discovery response %pM nf=%d, snr=%d\n",
352 addr2, rx_pd->nf, rx_pd->snr);
353 mwifiex_auto_tdls_update_peer_signal(priv,
354 addr2,
355 rx_pd->snr,
356 rx_pd->nf);
357 }
358 break;
359 case WLAN_CATEGORY_BACK:
360 /*we dont indicate BACK action frames to cfg80211*/
361 mwifiex_dbg(priv->adapter, INFO,
362 "drop BACK action frames");
363 return -1;
364 default:
acebe8c1 365 mwifiex_dbg(priv->adapter, INFO,
3e6f8a4b
AP		 366 "unknown public action frame category %d\n",
367 category);
72e5aa8d 368 }
72e5aa8d 369 default:
ec21dc4a 370 mwifiex_dbg(priv->adapter, INFO,
3e6f8a4b
AP		 371 "unknown mgmt frame subtype %#x\n", stype);
372 return 0;
72e5aa8d
AP		 373 }
374
375 return 0;
376}
2dbaf751
SP		 377/*
378 * This function processes the received management packet and send it
379 * to the kernel.
380 */
381int
f3b369e4 382mwifiex_process_mgmt_packet(struct mwifiex_private *priv,
2dbaf751
SP		 383 struct sk_buff *skb)
384{
385 struct rxpd *rx_pd;
2dbaf751 386 u16 pkt_len;
72e5aa8d 387 struct ieee80211_hdr *ieee_hdr;
2dbaf751
SP		 388
389 if (!skb)
390 return -1;
391
7521ce6e
AP		 392 if (!priv->mgmt_frame_mask ||
393 priv->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) {
acebe8c1
ZL		 394 mwifiex_dbg(priv->adapter, ERROR,
395 "do not receive mgmt frames on uninitialized intf");
7521ce6e
AP		 396 return -1;
397 }
398
2dbaf751 399 rx_pd = (struct rxpd *)skb->data;
2dbaf751
SP		 400
401 skb_pull(skb, le16_to_cpu(rx_pd->rx_pkt_offset));
402 skb_pull(skb, sizeof(pkt_len));
403
404 pkt_len = le16_to_cpu(rx_pd->rx_pkt_length);
405
72e5aa8d
AP		 406 ieee_hdr = (void *)skb->data;
407 if (ieee80211_is_mgmt(ieee_hdr->frame_control)) {
3e6f8a4b
AP		 408 if (mwifiex_parse_mgmt_packet(priv, (u8 *)ieee_hdr,
409 pkt_len, rx_pd))
410 return -1;
72e5aa8d 411 }
2dbaf751
SP		 412 /* Remove address4 */
413 memmove(skb->data + sizeof(struct ieee80211_hdr_3addr),
414 skb->data + sizeof(struct ieee80211_hdr),
415 pkt_len - sizeof(struct ieee80211_hdr));
416
417 pkt_len -= ETH_ALEN + sizeof(pkt_len);
418 rx_pd->rx_pkt_length = cpu_to_le16(pkt_len);
419
4facc34a 420 cfg80211_rx_mgmt(&priv->wdev, priv->roc_cfg.chan.center_freq,
19504cf5 421 CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len,
970fdfa8 422 0);
2dbaf751
SP		 423
424 return 0;
425}
426
5e6e3a92
BZ		 427/*
428 * This function processes the received packet before sending it to the
429 * kernel.
430 *
431 * It extracts the SKB from the received buffer and sends it to kernel.
432 * In case the received buffer does not contain the data in SKB format,
433 * the function creates a blank SKB, fills it with the data from the
434 * received buffer and then sends this new SKB to the kernel.
435 */
f3b369e4 436int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb)
5e6e3a92 437{
442f6f9b
XH		 438 struct mwifiex_sta_node *src_node;
439 struct ethhdr *p_ethhdr;
440
5e6e3a92
BZ		 441 if (!skb)
442 return -1;
443
f49c6e81
UR		 444 priv->stats.rx_bytes += skb->len;
445 priv->stats.rx_packets++;
446
442f6f9b
XH		 447 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
448 p_ethhdr = (void *)skb->data;
449 src_node = mwifiex_get_sta_entry(priv, p_ethhdr->h_source);
450 if (src_node) {
451 src_node->stats.last_rx = jiffies;
452 src_node->stats.rx_bytes += skb->len;
453 src_node->stats.rx_packets++;
454 }
455 }
456
5e6e3a92
BZ		 457 skb->dev = priv->netdev;
458 skb->protocol = eth_type_trans(skb, priv->netdev);
459 skb->ip_summed = CHECKSUM_NONE;
4daffe35 460
f553e1aa 461 /* This is required only in case of 11n and USB/PCIE as we alloc
4daffe35
AK		 462 * a buffer of 4K only if its 11N (to be able to receive 4K
463 * AMSDU packets). In case of SD we allocate buffers based
464 * on the size of packet and hence this is not needed.
465 *
466 * Modifying the truesize here as our allocation for each
467 * skb is 4K but we only receive 2K packets and this cause
468 * the kernel to start dropping packets in case where
469 * application has allocated buffer based on 2K size i.e.
470 * if there a 64K packet received (in IP fragments and
471 * application allocates 64K to receive this packet but
472 * this packet would almost double up because we allocate
473 * each 1.5K fragment in 4K and pass it up. As soon as the
474 * 64K limit hits kernel will start to drop rest of the
475 * fragments. Currently we fail the Filesndl-ht.scr script
476 * for UDP, hence this fix
477 */
f553e1aa
AP		 478 if ((priv->adapter->iface_type == MWIFIEX_USB ||
479 priv->adapter->iface_type == MWIFIEX_PCIE) &&
4daffe35
AK		 480 (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))
481 skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);
482
5e6e3a92
BZ		 483 if (in_interrupt())
484 netif_rx(skb);
485 else
486 netif_rx_ni(skb);
487
488 return 0;
489}
490
5e6e3a92
BZ		 491/*
492 * IOCTL completion callback handler.
493 *
494 * This function is called when a pending IOCTL is completed.
495 *
496 * If work queue support is enabled, the function wakes up the
497 * corresponding waiting function. Otherwise, it processes the
498 * IOCTL response and frees the response buffer.
499 */
efaaa8b8
AK		 500int mwifiex_complete_cmd(struct mwifiex_adapter *adapter,
501 struct cmd_ctrl_node *cmd_node)
5e6e3a92 502{
c5bc15fc
AF		 503 WARN_ON(!cmd_node->wait_q_enabled);
504 mwifiex_dbg(adapter, CMD, "cmd completed: status=%d\n",
acebe8c1 505 adapter->cmd_wait_q.status);
5e6e3a92 506
c5bc15fc
AF		 507 *cmd_node->condition = true;
508 wake_up_interruptible(&adapter->cmd_wait_q.wait);
5e6e3a92
BZ		 509
510 return 0;
511}
4bcf93d3
AP		 512
513/* This function will return the pointer to station entry in station list
514 * table which matches specified mac address.
515 * This function should be called after acquiring RA list spinlock.
516 * NULL is returned if station entry is not found in associated STA list.
517 */
518struct mwifiex_sta_node *
3b3a0162 519mwifiex_get_sta_entry(struct mwifiex_private *priv, const u8 *mac)
4bcf93d3
AP		 520{
521 struct mwifiex_sta_node *node;
522
523 if (!mac)
524 return NULL;
525
526 list_for_each_entry(node, &priv->sta_list, list) {
527 if (!memcmp(node->mac_addr, mac, ETH_ALEN))
528 return node;
529 }
530
531 return NULL;
532}
533
ba101ad5
XH		 534static struct mwifiex_sta_node *
535mwifiex_get_tdls_sta_entry(struct mwifiex_private *priv, u8 status)
536{
537 struct mwifiex_sta_node *node;
538
539 list_for_each_entry(node, &priv->sta_list, list) {
540 if (node->tdls_status == status)
541 return node;
542 }
543
544 return NULL;
545}
546
547/* If tdls channel switching is on-going, tx data traffic should be
548 * blocked until the switching stage completed.
549 */
550u8 mwifiex_is_tdls_chan_switching(struct mwifiex_private *priv)
551{
552 struct mwifiex_sta_node *sta_ptr;
553
554 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
555 return false;
556
557 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_CHAN_SWITCHING);
558 if (sta_ptr)
559 return true;
560
561 return false;
562}
563
564u8 mwifiex_is_tdls_off_chan(struct mwifiex_private *priv)
565{
566 struct mwifiex_sta_node *sta_ptr;
567
568 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
569 return false;
570
571 sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_IN_OFF_CHAN);
572 if (sta_ptr)
573 return true;
574
575 return false;
576}
577
578/* If tdls channel switching is on-going or tdls operate on off-channel,
579 * cmd path should be blocked until tdls switched to base-channel.
580 */
581u8 mwifiex_is_send_cmd_allowed(struct mwifiex_private *priv)
582{
583 if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
584 return true;
585
586 if (mwifiex_is_tdls_chan_switching(priv) ||
587 mwifiex_is_tdls_off_chan(priv))
588 return false;
589
590 return true;
591}
592
4bcf93d3
AP		 593/* This function will add a sta_node entry to associated station list
594 * table with the given mac address.
595 * If entry exist already, existing entry is returned.
596 * If received mac address is NULL, NULL is returned.
597 */
598struct mwifiex_sta_node *
3b3a0162 599mwifiex_add_sta_entry(struct mwifiex_private *priv, const u8 *mac)
4bcf93d3
AP		 600{
601 struct mwifiex_sta_node *node;
602 unsigned long flags;
603
604 if (!mac)
605 return NULL;
606
607 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
608 node = mwifiex_get_sta_entry(priv, mac);
609 if (node)
610 goto done;
611
612 node = kzalloc(sizeof(*node), GFP_ATOMIC);
613 if (!node)
614 goto done;
615
616 memcpy(node->mac_addr, mac, ETH_ALEN);
617 list_add_tail(&node->list, &priv->sta_list);
618
619done:
620 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
621 return node;
622}
623
624/* This function will search for HT IE in association request IEs
625 * and set station HT parameters accordingly.
626 */
627void
628mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies,
629 int ies_len, struct mwifiex_sta_node *node)
630{
9ab7b5b9 631 struct ieee_types_header *ht_cap_ie;
4bcf93d3
AP		 632 const struct ieee80211_ht_cap *ht_cap;
633
634 if (!ies)
635 return;
636
9ab7b5b9
ZL		 637 ht_cap_ie = (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies,
638 ies_len);
639 if (ht_cap_ie) {
640 ht_cap = (void *)(ht_cap_ie + 1);
4bcf93d3
AP		 641 node->is_11n_enabled = 1;
642 node->max_amsdu = le16_to_cpu(ht_cap->cap_info) &
643 IEEE80211_HT_CAP_MAX_AMSDU ?
644 MWIFIEX_TX_DATA_BUF_SIZE_8K :
645 MWIFIEX_TX_DATA_BUF_SIZE_4K;
646 } else {
647 node->is_11n_enabled = 0;
648 }
649
650 return;
651}
652
653/* This function will delete a station entry from station list */
3b3a0162 654void mwifiex_del_sta_entry(struct mwifiex_private *priv, const u8 *mac)
4bcf93d3
AP		 655{
656 struct mwifiex_sta_node *node;
657 unsigned long flags;
658
659 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
660
661 node = mwifiex_get_sta_entry(priv, mac);
662 if (node) {
663 list_del(&node->list);
664 kfree(node);
665 }
666
667 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
668 return;
669}
670
671/* This function will delete all stations from associated station list. */
672void mwifiex_del_all_sta_list(struct mwifiex_private *priv)
673{
674 struct mwifiex_sta_node *node, *tmp;
675 unsigned long flags;
676
677 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
678
679 list_for_each_entry_safe(node, tmp, &priv->sta_list, list) {
680 list_del(&node->list);
681 kfree(node);
682 }
683
684 INIT_LIST_HEAD(&priv->sta_list);
685 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
686 return;
687}
cbf6e055
XH		 688
689/* This function adds histogram data to histogram array*/
690void mwifiex_hist_data_add(struct mwifiex_private *priv,
691 u8 rx_rate, s8 snr, s8 nflr)
692{
693 struct mwifiex_histogram_data *phist_data = priv->hist_data;
694
695 if (atomic_read(&phist_data->num_samples) > MWIFIEX_HIST_MAX_SAMPLES)
696 mwifiex_hist_data_reset(priv);
697 mwifiex_hist_data_set(priv, rx_rate, snr, nflr);
698}
699
700/* function to add histogram record */
701void mwifiex_hist_data_set(struct mwifiex_private *priv, u8 rx_rate, s8 snr,
702 s8 nflr)
703{
704 struct mwifiex_histogram_data *phist_data = priv->hist_data;
705
706 atomic_inc(&phist_data->num_samples);
707 atomic_inc(&phist_data->rx_rate[rx_rate]);
708 atomic_inc(&phist_data->snr[snr]);
709 atomic_inc(&phist_data->noise_flr[128 + nflr]);
710 atomic_inc(&phist_data->sig_str[nflr - snr]);
711}
712
713/* function to reset histogram data during init/reset */
714void mwifiex_hist_data_reset(struct mwifiex_private *priv)
715{
716 int ix;
717 struct mwifiex_histogram_data *phist_data = priv->hist_data;
718
719 atomic_set(&phist_data->num_samples, 0);
720 for (ix = 0; ix < MWIFIEX_MAX_AC_RX_RATES; ix++)
721 atomic_set(&phist_data->rx_rate[ix], 0);
722 for (ix = 0; ix < MWIFIEX_MAX_SNR; ix++)
723 atomic_set(&phist_data->snr[ix], 0);
724 for (ix = 0; ix < MWIFIEX_MAX_NOISE_FLR; ix++)
725 atomic_set(&phist_data->noise_flr[ix], 0);
726 for (ix = 0; ix < MWIFIEX_MAX_SIG_STRENGTH; ix++)
727 atomic_set(&phist_data->sig_str[ix], 0);
728}
31def91b 729
62159944 730void *mwifiex_alloc_dma_align_buf(int rx_len, gfp_t flags)
31def91b
AP		 731{
732 struct sk_buff *skb;
733 int buf_len, pad;
734
735 buf_len = rx_len + MWIFIEX_RX_HEADROOM + MWIFIEX_DMA_ALIGN_SZ;
736
737 skb = __dev_alloc_skb(buf_len, flags);
738
739 if (!skb)
740 return NULL;
741
742 skb_reserve(skb, MWIFIEX_RX_HEADROOM);
743
744 pad = MWIFIEX_ALIGN_ADDR(skb->data, MWIFIEX_DMA_ALIGN_SZ) -
745 (long)skb->data;
746
747 skb_reserve(skb, pad);
748
749 return skb;
750}
62159944 751EXPORT_SYMBOL_GPL(mwifiex_alloc_dma_align_buf);
Linux kernel - Deliverables
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