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 {"int_counter", item_size(int_counter
),
30 item_addr(int_counter
), 1},
31 {"wmm_ac_vo", item_size(packets_out
[WMM_AC_VO
]),
32 item_addr(packets_out
[WMM_AC_VO
]), 1},
33 {"wmm_ac_vi", item_size(packets_out
[WMM_AC_VI
]),
34 item_addr(packets_out
[WMM_AC_VI
]), 1},
35 {"wmm_ac_be", item_size(packets_out
[WMM_AC_BE
]),
36 item_addr(packets_out
[WMM_AC_BE
]), 1},
37 {"wmm_ac_bk", item_size(packets_out
[WMM_AC_BK
]),
38 item_addr(packets_out
[WMM_AC_BK
]), 1},
39 {"tx_buf_size", item_size(tx_buf_size
),
40 item_addr(tx_buf_size
), 1},
41 {"curr_tx_buf_size", item_size(curr_tx_buf_size
),
42 item_addr(curr_tx_buf_size
), 1},
43 {"ps_mode", item_size(ps_mode
),
44 item_addr(ps_mode
), 1},
45 {"ps_state", item_size(ps_state
),
46 item_addr(ps_state
), 1},
47 {"is_deep_sleep", item_size(is_deep_sleep
),
48 item_addr(is_deep_sleep
), 1},
49 {"wakeup_dev_req", item_size(pm_wakeup_card_req
),
50 item_addr(pm_wakeup_card_req
), 1},
51 {"wakeup_tries", item_size(pm_wakeup_fw_try
),
52 item_addr(pm_wakeup_fw_try
), 1},
53 {"hs_configured", item_size(is_hs_configured
),
54 item_addr(is_hs_configured
), 1},
55 {"hs_activated", item_size(hs_activated
),
56 item_addr(hs_activated
), 1},
57 {"num_tx_timeout", item_size(num_tx_timeout
),
58 item_addr(num_tx_timeout
), 1},
59 {"is_cmd_timedout", item_size(is_cmd_timedout
),
60 item_addr(is_cmd_timedout
), 1},
61 {"timeout_cmd_id", item_size(timeout_cmd_id
),
62 item_addr(timeout_cmd_id
), 1},
63 {"timeout_cmd_act", item_size(timeout_cmd_act
),
64 item_addr(timeout_cmd_act
), 1},
65 {"last_cmd_id", item_size(last_cmd_id
),
66 item_addr(last_cmd_id
), DBG_CMD_NUM
},
67 {"last_cmd_act", item_size(last_cmd_act
),
68 item_addr(last_cmd_act
), DBG_CMD_NUM
},
69 {"last_cmd_index", item_size(last_cmd_index
),
70 item_addr(last_cmd_index
), 1},
71 {"last_cmd_resp_id", item_size(last_cmd_resp_id
),
72 item_addr(last_cmd_resp_id
), DBG_CMD_NUM
},
73 {"last_cmd_resp_index", item_size(last_cmd_resp_index
),
74 item_addr(last_cmd_resp_index
), 1},
75 {"last_event", item_size(last_event
),
76 item_addr(last_event
), DBG_CMD_NUM
},
77 {"last_event_index", item_size(last_event_index
),
78 item_addr(last_event_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},
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},
116 static int num_of_items
= ARRAY_SIZE(items
);
119 * Firmware initialization complete callback handler.
121 * This function wakes up the function waiting on the init
122 * wait queue for the firmware initialization to complete.
124 int mwifiex_init_fw_complete(struct mwifiex_adapter
*adapter
)
127 adapter
->init_wait_q_woken
= true;
128 wake_up_interruptible(&adapter
->init_wait_q
);
133 * Firmware shutdown complete callback handler.
135 * This function sets the hardware status to not ready and wakes up
136 * the function waiting on the init wait queue for the firmware
137 * shutdown to complete.
139 int mwifiex_shutdown_fw_complete(struct mwifiex_adapter
*adapter
)
141 adapter
->hw_status
= MWIFIEX_HW_STATUS_NOT_READY
;
142 adapter
->init_wait_q_woken
= true;
143 wake_up_interruptible(&adapter
->init_wait_q
);
148 * This function sends init/shutdown command
151 int mwifiex_init_shutdown_fw(struct mwifiex_private
*priv
,
152 u32 func_init_shutdown
)
156 if (func_init_shutdown
== MWIFIEX_FUNC_INIT
) {
157 cmd
= HostCmd_CMD_FUNC_INIT
;
158 } else if (func_init_shutdown
== MWIFIEX_FUNC_SHUTDOWN
) {
159 cmd
= HostCmd_CMD_FUNC_SHUTDOWN
;
161 dev_err(priv
->adapter
->dev
, "unsupported parameter\n");
165 return mwifiex_send_cmd(priv
, cmd
, HostCmd_ACT_GEN_SET
, 0, NULL
, true);
167 EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw
);
170 * IOCTL request handler to set/get debug information.
172 * This function collates/sets the information from/to different driver
175 int mwifiex_get_debug_info(struct mwifiex_private
*priv
,
176 struct mwifiex_debug_info
*info
)
178 struct mwifiex_adapter
*adapter
= priv
->adapter
;
181 memcpy(info
->packets_out
,
182 priv
->wmm
.packets_out
,
183 sizeof(priv
->wmm
.packets_out
));
184 info
->curr_tx_buf_size
= (u32
) adapter
->curr_tx_buf_size
;
185 info
->tx_buf_size
= (u32
) adapter
->tx_buf_size
;
186 info
->rx_tbl_num
= mwifiex_get_rx_reorder_tbl(priv
,
188 info
->tx_tbl_num
= mwifiex_get_tx_ba_stream_tbl(priv
,
190 info
->tdls_peer_num
= mwifiex_get_tdls_list(priv
,
192 info
->ps_mode
= adapter
->ps_mode
;
193 info
->ps_state
= adapter
->ps_state
;
194 info
->is_deep_sleep
= adapter
->is_deep_sleep
;
195 info
->pm_wakeup_card_req
= adapter
->pm_wakeup_card_req
;
196 info
->pm_wakeup_fw_try
= adapter
->pm_wakeup_fw_try
;
197 info
->is_hs_configured
= adapter
->is_hs_configured
;
198 info
->hs_activated
= adapter
->hs_activated
;
199 info
->is_cmd_timedout
= adapter
->is_cmd_timedout
;
200 info
->num_cmd_host_to_card_failure
201 = adapter
->dbg
.num_cmd_host_to_card_failure
;
202 info
->num_cmd_sleep_cfm_host_to_card_failure
203 = adapter
->dbg
.num_cmd_sleep_cfm_host_to_card_failure
;
204 info
->num_tx_host_to_card_failure
205 = adapter
->dbg
.num_tx_host_to_card_failure
;
206 info
->num_event_deauth
= adapter
->dbg
.num_event_deauth
;
207 info
->num_event_disassoc
= adapter
->dbg
.num_event_disassoc
;
208 info
->num_event_link_lost
= adapter
->dbg
.num_event_link_lost
;
209 info
->num_cmd_deauth
= adapter
->dbg
.num_cmd_deauth
;
210 info
->num_cmd_assoc_success
=
211 adapter
->dbg
.num_cmd_assoc_success
;
212 info
->num_cmd_assoc_failure
=
213 adapter
->dbg
.num_cmd_assoc_failure
;
214 info
->num_tx_timeout
= adapter
->dbg
.num_tx_timeout
;
215 info
->timeout_cmd_id
= adapter
->dbg
.timeout_cmd_id
;
216 info
->timeout_cmd_act
= adapter
->dbg
.timeout_cmd_act
;
217 memcpy(info
->last_cmd_id
, adapter
->dbg
.last_cmd_id
,
218 sizeof(adapter
->dbg
.last_cmd_id
));
219 memcpy(info
->last_cmd_act
, adapter
->dbg
.last_cmd_act
,
220 sizeof(adapter
->dbg
.last_cmd_act
));
221 info
->last_cmd_index
= adapter
->dbg
.last_cmd_index
;
222 memcpy(info
->last_cmd_resp_id
, adapter
->dbg
.last_cmd_resp_id
,
223 sizeof(adapter
->dbg
.last_cmd_resp_id
));
224 info
->last_cmd_resp_index
= adapter
->dbg
.last_cmd_resp_index
;
225 memcpy(info
->last_event
, adapter
->dbg
.last_event
,
226 sizeof(adapter
->dbg
.last_event
));
227 info
->last_event_index
= adapter
->dbg
.last_event_index
;
228 info
->data_sent
= adapter
->data_sent
;
229 info
->cmd_sent
= adapter
->cmd_sent
;
230 info
->cmd_resp_received
= adapter
->cmd_resp_received
;
236 int mwifiex_debug_info_to_buffer(struct mwifiex_private
*priv
, char *buf
,
237 struct mwifiex_debug_info
*info
)
240 struct mwifiex_debug_data
*d
= &items
[0];
248 for (i
= 0; i
< num_of_items
; i
++) {
249 p
+= sprintf(p
, "%s=", d
[i
].name
);
251 size
= d
[i
].size
/ d
[i
].num
;
253 if (i
< (num_of_items
- 3))
254 addr
= d
[i
].addr
+ (size_t)info
;
255 else /* The last 3 items are struct mwifiex_adapter variables */
256 addr
= d
[i
].addr
+ (size_t)priv
->adapter
;
258 for (j
= 0; j
< d
[i
].num
; j
++) {
264 val
= *((u16
*)addr
);
267 val
= *((u32
*)addr
);
270 val
= *((long long *)addr
);
277 p
+= sprintf(p
, "%#lx ", val
);
281 p
+= sprintf(p
, "\n");
284 if (info
->tx_tbl_num
) {
285 p
+= sprintf(p
, "Tx BA stream table:\n");
286 for (i
= 0; i
< info
->tx_tbl_num
; i
++)
287 p
+= sprintf(p
, "tid = %d, ra = %pM\n",
288 info
->tx_tbl
[i
].tid
, info
->tx_tbl
[i
].ra
);
291 if (info
->rx_tbl_num
) {
292 p
+= sprintf(p
, "Rx reorder table:\n");
293 for (i
= 0; i
< info
->rx_tbl_num
; i
++) {
294 p
+= sprintf(p
, "tid = %d, ta = %pM, ",
297 p
+= sprintf(p
, "start_win = %d, ",
298 info
->rx_tbl
[i
].start_win
);
299 p
+= sprintf(p
, "win_size = %d, buffer: ",
300 info
->rx_tbl
[i
].win_size
);
302 for (j
= 0; j
< info
->rx_tbl
[i
].win_size
; j
++)
303 p
+= sprintf(p
, "%c ",
304 info
->rx_tbl
[i
].buffer
[j
] ?
307 p
+= sprintf(p
, "\n");
311 if (info
->tdls_peer_num
) {
312 p
+= sprintf(p
, "TDLS peer table:\n");
313 for (i
= 0; i
< info
->tdls_peer_num
; i
++) {
314 p
+= sprintf(p
, "peer = %pM",
315 info
->tdls_list
[i
].peer_addr
);
316 p
+= sprintf(p
, "\n");
324 mwifiex_parse_mgmt_packet(struct mwifiex_private
*priv
, u8
*payload
, u16 len
,
328 u8 category
, action_code
;
329 struct ieee80211_hdr
*ieee_hdr
= (void *)payload
;
331 stype
= (le16_to_cpu(ieee_hdr
->frame_control
) & IEEE80211_FCTL_STYPE
);
334 case IEEE80211_STYPE_ACTION
:
335 category
= *(payload
+ sizeof(struct ieee80211_hdr
));
336 action_code
= *(payload
+ sizeof(struct ieee80211_hdr
) + 1);
337 if (category
== WLAN_CATEGORY_PUBLIC
&&
338 action_code
== WLAN_PUB_ACTION_TDLS_DISCOVER_RES
) {
339 dev_dbg(priv
->adapter
->dev
,
340 "TDLS discovery response %pM nf=%d, snr=%d\n",
341 ieee_hdr
->addr2
, rx_pd
->nf
, rx_pd
->snr
);
342 mwifiex_auto_tdls_update_peer_signal(priv
,
349 dev_dbg(priv
->adapter
->dev
,
350 "unknown mgmt frame subytpe %#x\n", stype
);
356 * This function processes the received management packet and send it
360 mwifiex_process_mgmt_packet(struct mwifiex_private
*priv
,
365 struct ieee80211_hdr
*ieee_hdr
;
370 if (!priv
->mgmt_frame_mask
||
371 priv
->wdev
.iftype
== NL80211_IFTYPE_UNSPECIFIED
) {
372 dev_dbg(priv
->adapter
->dev
,
373 "do not receive mgmt frames on uninitialized intf");
377 rx_pd
= (struct rxpd
*)skb
->data
;
379 skb_pull(skb
, le16_to_cpu(rx_pd
->rx_pkt_offset
));
380 skb_pull(skb
, sizeof(pkt_len
));
382 pkt_len
= le16_to_cpu(rx_pd
->rx_pkt_length
);
384 ieee_hdr
= (void *)skb
->data
;
385 if (ieee80211_is_mgmt(ieee_hdr
->frame_control
)) {
386 mwifiex_parse_mgmt_packet(priv
, (u8
*)ieee_hdr
,
389 /* Remove address4 */
390 memmove(skb
->data
+ sizeof(struct ieee80211_hdr_3addr
),
391 skb
->data
+ sizeof(struct ieee80211_hdr
),
392 pkt_len
- sizeof(struct ieee80211_hdr
));
394 pkt_len
-= ETH_ALEN
+ sizeof(pkt_len
);
395 rx_pd
->rx_pkt_length
= cpu_to_le16(pkt_len
);
397 cfg80211_rx_mgmt(&priv
->wdev
, priv
->roc_cfg
.chan
.center_freq
,
398 CAL_RSSI(rx_pd
->snr
, rx_pd
->nf
), skb
->data
, pkt_len
,
405 * This function processes the received packet before sending it to the
408 * It extracts the SKB from the received buffer and sends it to kernel.
409 * In case the received buffer does not contain the data in SKB format,
410 * the function creates a blank SKB, fills it with the data from the
411 * received buffer and then sends this new SKB to the kernel.
413 int mwifiex_recv_packet(struct mwifiex_private
*priv
, struct sk_buff
*skb
)
418 priv
->stats
.rx_bytes
+= skb
->len
;
419 priv
->stats
.rx_packets
++;
421 skb
->dev
= priv
->netdev
;
422 skb
->protocol
= eth_type_trans(skb
, priv
->netdev
);
423 skb
->ip_summed
= CHECKSUM_NONE
;
425 /* This is required only in case of 11n and USB/PCIE as we alloc
426 * a buffer of 4K only if its 11N (to be able to receive 4K
427 * AMSDU packets). In case of SD we allocate buffers based
428 * on the size of packet and hence this is not needed.
430 * Modifying the truesize here as our allocation for each
431 * skb is 4K but we only receive 2K packets and this cause
432 * the kernel to start dropping packets in case where
433 * application has allocated buffer based on 2K size i.e.
434 * if there a 64K packet received (in IP fragments and
435 * application allocates 64K to receive this packet but
436 * this packet would almost double up because we allocate
437 * each 1.5K fragment in 4K and pass it up. As soon as the
438 * 64K limit hits kernel will start to drop rest of the
439 * fragments. Currently we fail the Filesndl-ht.scr script
440 * for UDP, hence this fix
442 if ((priv
->adapter
->iface_type
== MWIFIEX_USB
||
443 priv
->adapter
->iface_type
== MWIFIEX_PCIE
) &&
444 (skb
->truesize
> MWIFIEX_RX_DATA_BUF_SIZE
))
445 skb
->truesize
+= (skb
->len
- MWIFIEX_RX_DATA_BUF_SIZE
);
456 * IOCTL completion callback handler.
458 * This function is called when a pending IOCTL is completed.
460 * If work queue support is enabled, the function wakes up the
461 * corresponding waiting function. Otherwise, it processes the
462 * IOCTL response and frees the response buffer.
464 int mwifiex_complete_cmd(struct mwifiex_adapter
*adapter
,
465 struct cmd_ctrl_node
*cmd_node
)
467 dev_dbg(adapter
->dev
, "cmd completed: status=%d\n",
468 adapter
->cmd_wait_q
.status
);
470 *(cmd_node
->condition
) = true;
472 if (adapter
->cmd_wait_q
.status
== -ETIMEDOUT
)
473 dev_err(adapter
->dev
, "cmd timeout\n");
475 wake_up_interruptible(&adapter
->cmd_wait_q
.wait
);
480 /* This function will return the pointer to station entry in station list
481 * table which matches specified mac address.
482 * This function should be called after acquiring RA list spinlock.
483 * NULL is returned if station entry is not found in associated STA list.
485 struct mwifiex_sta_node
*
486 mwifiex_get_sta_entry(struct mwifiex_private
*priv
, const u8
*mac
)
488 struct mwifiex_sta_node
*node
;
493 list_for_each_entry(node
, &priv
->sta_list
, list
) {
494 if (!memcmp(node
->mac_addr
, mac
, ETH_ALEN
))
501 /* This function will add a sta_node entry to associated station list
502 * table with the given mac address.
503 * If entry exist already, existing entry is returned.
504 * If received mac address is NULL, NULL is returned.
506 struct mwifiex_sta_node
*
507 mwifiex_add_sta_entry(struct mwifiex_private
*priv
, const u8
*mac
)
509 struct mwifiex_sta_node
*node
;
515 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
516 node
= mwifiex_get_sta_entry(priv
, mac
);
520 node
= kzalloc(sizeof(*node
), GFP_ATOMIC
);
524 memcpy(node
->mac_addr
, mac
, ETH_ALEN
);
525 list_add_tail(&node
->list
, &priv
->sta_list
);
528 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
532 /* This function will search for HT IE in association request IEs
533 * and set station HT parameters accordingly.
536 mwifiex_set_sta_ht_cap(struct mwifiex_private
*priv
, const u8
*ies
,
537 int ies_len
, struct mwifiex_sta_node
*node
)
539 const struct ieee80211_ht_cap
*ht_cap
;
544 ht_cap
= (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY
, ies
, ies_len
);
546 node
->is_11n_enabled
= 1;
547 node
->max_amsdu
= le16_to_cpu(ht_cap
->cap_info
) &
548 IEEE80211_HT_CAP_MAX_AMSDU
?
549 MWIFIEX_TX_DATA_BUF_SIZE_8K
:
550 MWIFIEX_TX_DATA_BUF_SIZE_4K
;
552 node
->is_11n_enabled
= 0;
558 /* This function will delete a station entry from station list */
559 void mwifiex_del_sta_entry(struct mwifiex_private
*priv
, const u8
*mac
)
561 struct mwifiex_sta_node
*node
;
564 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
566 node
= mwifiex_get_sta_entry(priv
, mac
);
568 list_del(&node
->list
);
572 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
576 /* This function will delete all stations from associated station list. */
577 void mwifiex_del_all_sta_list(struct mwifiex_private
*priv
)
579 struct mwifiex_sta_node
*node
, *tmp
;
582 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
584 list_for_each_entry_safe(node
, tmp
, &priv
->sta_list
, list
) {
585 list_del(&node
->list
);
589 INIT_LIST_HEAD(&priv
->sta_list
);
590 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
594 /* This function adds histogram data to histogram array*/
595 void mwifiex_hist_data_add(struct mwifiex_private
*priv
,
596 u8 rx_rate
, s8 snr
, s8 nflr
)
598 struct mwifiex_histogram_data
*phist_data
= priv
->hist_data
;
600 if (atomic_read(&phist_data
->num_samples
) > MWIFIEX_HIST_MAX_SAMPLES
)
601 mwifiex_hist_data_reset(priv
);
602 mwifiex_hist_data_set(priv
, rx_rate
, snr
, nflr
);
605 /* function to add histogram record */
606 void mwifiex_hist_data_set(struct mwifiex_private
*priv
, u8 rx_rate
, s8 snr
,
609 struct mwifiex_histogram_data
*phist_data
= priv
->hist_data
;
611 atomic_inc(&phist_data
->num_samples
);
612 atomic_inc(&phist_data
->rx_rate
[rx_rate
]);
613 atomic_inc(&phist_data
->snr
[snr
]);
614 atomic_inc(&phist_data
->noise_flr
[128 + nflr
]);
615 atomic_inc(&phist_data
->sig_str
[nflr
- snr
]);
618 /* function to reset histogram data during init/reset */
619 void mwifiex_hist_data_reset(struct mwifiex_private
*priv
)
622 struct mwifiex_histogram_data
*phist_data
= priv
->hist_data
;
624 atomic_set(&phist_data
->num_samples
, 0);
625 for (ix
= 0; ix
< MWIFIEX_MAX_AC_RX_RATES
; ix
++)
626 atomic_set(&phist_data
->rx_rate
[ix
], 0);
627 for (ix
= 0; ix
< MWIFIEX_MAX_SNR
; ix
++)
628 atomic_set(&phist_data
->snr
[ix
], 0);
629 for (ix
= 0; ix
< MWIFIEX_MAX_NOISE_FLR
; ix
++)
630 atomic_set(&phist_data
->noise_flr
[ix
], 0);
631 for (ix
= 0; ix
< MWIFIEX_MAX_SIG_STRENGTH
; ix
++)
632 atomic_set(&phist_data
->sig_str
[ix
], 0);
635 void *mwifiex_alloc_dma_align_buf(int rx_len
, gfp_t flags
)
640 buf_len
= rx_len
+ MWIFIEX_RX_HEADROOM
+ MWIFIEX_DMA_ALIGN_SZ
;
642 skb
= __dev_alloc_skb(buf_len
, flags
);
647 skb_reserve(skb
, MWIFIEX_RX_HEADROOM
);
649 pad
= MWIFIEX_ALIGN_ADDR(skb
->data
, MWIFIEX_DMA_ALIGN_SZ
) -
652 skb_reserve(skb
, pad
);
656 EXPORT_SYMBOL_GPL(mwifiex_alloc_dma_align_buf
);