2 * Marvell Wireless LAN device driver: major 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.
27 const char driver_version
[] = "mwifiex " VERSION
" (%s) ";
28 static char *cal_data_cfg
;
29 module_param(cal_data_cfg
, charp
, 0);
31 static unsigned short driver_mode
;
32 module_param(driver_mode
, ushort
, 0);
33 MODULE_PARM_DESC(driver_mode
,
34 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
37 * This function registers the device and performs all the necessary
40 * The following initialization operations are performed -
41 * - Allocate adapter structure
42 * - Save interface specific operations table in adapter
43 * - Call interface specific initialization routine
44 * - Allocate private structures
45 * - Set default adapter structure parameters
48 * In case of any errors during inittialization, this function also ensures
49 * proper cleanup before exiting.
51 static int mwifiex_register(void *card
, struct mwifiex_if_ops
*if_ops
,
54 struct mwifiex_adapter
*adapter
;
57 adapter
= kzalloc(sizeof(struct mwifiex_adapter
), GFP_KERNEL
);
64 /* Save interface specific operations in adapter */
65 memmove(&adapter
->if_ops
, if_ops
, sizeof(struct mwifiex_if_ops
));
67 /* card specific initialization has been deferred until now .. */
68 if (adapter
->if_ops
.init_if
)
69 if (adapter
->if_ops
.init_if(adapter
))
72 adapter
->priv_num
= 0;
74 for (i
= 0; i
< MWIFIEX_MAX_BSS_NUM
; i
++) {
75 /* Allocate memory for private structure */
77 kzalloc(sizeof(struct mwifiex_private
), GFP_KERNEL
);
78 if (!adapter
->priv
[i
])
81 adapter
->priv
[i
]->adapter
= adapter
;
84 mwifiex_init_lock_list(adapter
);
86 setup_timer(&adapter
->cmd_timer
, mwifiex_cmd_timeout_func
,
87 (unsigned long)adapter
);
92 dev_dbg(adapter
->dev
, "info: leave mwifiex_register with error\n");
94 for (i
= 0; i
< adapter
->priv_num
; i
++)
95 kfree(adapter
->priv
[i
]);
103 * This function unregisters the device and performs all the necessary
106 * The following cleanup operations are performed -
108 * - Free beacon buffers
109 * - Free private structures
110 * - Free adapter structure
112 static int mwifiex_unregister(struct mwifiex_adapter
*adapter
)
116 if (adapter
->if_ops
.cleanup_if
)
117 adapter
->if_ops
.cleanup_if(adapter
);
119 del_timer_sync(&adapter
->cmd_timer
);
121 /* Free private structures */
122 for (i
= 0; i
< adapter
->priv_num
; i
++) {
123 if (adapter
->priv
[i
]) {
124 mwifiex_free_curr_bcn(adapter
->priv
[i
]);
125 kfree(adapter
->priv
[i
]);
129 vfree(adapter
->chan_stats
);
134 void mwifiex_queue_main_work(struct mwifiex_adapter
*adapter
)
138 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
139 if (adapter
->mwifiex_processing
) {
140 adapter
->more_task_flag
= true;
141 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
143 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
144 queue_work(adapter
->workqueue
, &adapter
->main_work
);
147 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work
);
149 static void mwifiex_queue_rx_work(struct mwifiex_adapter
*adapter
)
153 spin_lock_irqsave(&adapter
->rx_proc_lock
, flags
);
154 if (adapter
->rx_processing
) {
155 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
157 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
158 queue_work(adapter
->rx_workqueue
, &adapter
->rx_work
);
162 static int mwifiex_process_rx(struct mwifiex_adapter
*adapter
)
166 struct mwifiex_rxinfo
*rx_info
;
168 spin_lock_irqsave(&adapter
->rx_proc_lock
, flags
);
169 if (adapter
->rx_processing
|| adapter
->rx_locked
) {
170 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
173 adapter
->rx_processing
= true;
174 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
177 /* Check for Rx data */
178 while ((skb
= skb_dequeue(&adapter
->rx_data_q
))) {
179 atomic_dec(&adapter
->rx_pending
);
180 if ((adapter
->delay_main_work
||
181 adapter
->iface_type
== MWIFIEX_USB
) &&
182 (atomic_read(&adapter
->rx_pending
) < LOW_RX_PENDING
)) {
183 if (adapter
->if_ops
.submit_rem_rx_urbs
)
184 adapter
->if_ops
.submit_rem_rx_urbs(adapter
);
185 adapter
->delay_main_work
= false;
186 mwifiex_queue_main_work(adapter
);
188 rx_info
= MWIFIEX_SKB_RXCB(skb
);
189 if (rx_info
->buf_type
== MWIFIEX_TYPE_AGGR_DATA
) {
190 if (adapter
->if_ops
.deaggr_pkt
)
191 adapter
->if_ops
.deaggr_pkt(adapter
, skb
);
192 dev_kfree_skb_any(skb
);
194 mwifiex_handle_rx_packet(adapter
, skb
);
197 spin_lock_irqsave(&adapter
->rx_proc_lock
, flags
);
198 adapter
->rx_processing
= false;
199 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
208 * This function is the main procedure of the driver and handles various driver
209 * operations. It runs in a loop and provides the core functionalities.
211 * The main responsibilities of this function are -
212 * - Ensure concurrency control
213 * - Handle pending interrupts and call interrupt handlers
214 * - Wake up the card if required
215 * - Handle command responses and call response handlers
216 * - Handle events and call event handlers
217 * - Execute pending commands
218 * - Transmit pending data packets
220 int mwifiex_main_process(struct mwifiex_adapter
*adapter
)
225 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
227 /* Check if already processing */
228 if (adapter
->mwifiex_processing
|| adapter
->main_locked
) {
229 adapter
->more_task_flag
= true;
230 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
233 adapter
->mwifiex_processing
= true;
237 adapter
->more_task_flag
= false;
238 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
239 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
) ||
240 (adapter
->hw_status
== MWIFIEX_HW_STATUS_NOT_READY
))
243 /* For non-USB interfaces, If we process interrupts first, it
244 * would increase RX pending even further. Avoid this by
245 * checking if rx_pending has crossed high threshold and
246 * schedule rx work queue and then process interrupts.
247 * For USB interface, there are no interrupts. We already have
248 * HIGH_RX_PENDING check in usb.c
250 if (atomic_read(&adapter
->rx_pending
) >= HIGH_RX_PENDING
&&
251 adapter
->iface_type
!= MWIFIEX_USB
) {
252 adapter
->delay_main_work
= true;
253 mwifiex_queue_rx_work(adapter
);
257 /* Handle pending interrupt if any */
258 if (adapter
->int_status
) {
259 if (adapter
->hs_activated
)
260 mwifiex_process_hs_config(adapter
);
261 if (adapter
->if_ops
.process_int_status
)
262 adapter
->if_ops
.process_int_status(adapter
);
265 if (adapter
->rx_work_enabled
&& adapter
->data_received
)
266 mwifiex_queue_rx_work(adapter
);
268 /* Need to wake up the card ? */
269 if ((adapter
->ps_state
== PS_STATE_SLEEP
) &&
270 (adapter
->pm_wakeup_card_req
&&
271 !adapter
->pm_wakeup_fw_try
) &&
272 (is_command_pending(adapter
) ||
273 !skb_queue_empty(&adapter
->tx_data_q
) ||
274 !mwifiex_wmm_lists_empty(adapter
))) {
275 adapter
->pm_wakeup_fw_try
= true;
276 mod_timer(&adapter
->wakeup_timer
, jiffies
+ (HZ
*3));
277 adapter
->if_ops
.wakeup(adapter
);
278 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
282 if (IS_CARD_RX_RCVD(adapter
)) {
283 adapter
->data_received
= false;
284 adapter
->pm_wakeup_fw_try
= false;
285 del_timer(&adapter
->wakeup_timer
);
286 if (adapter
->ps_state
== PS_STATE_SLEEP
)
287 adapter
->ps_state
= PS_STATE_AWAKE
;
289 /* We have tried to wakeup the card already */
290 if (adapter
->pm_wakeup_fw_try
)
292 if (adapter
->ps_state
!= PS_STATE_AWAKE
||
293 adapter
->tx_lock_flag
)
296 if ((!adapter
->scan_chan_gap_enabled
&&
297 adapter
->scan_processing
) || adapter
->data_sent
||
298 (mwifiex_wmm_lists_empty(adapter
) &&
299 skb_queue_empty(&adapter
->tx_data_q
))) {
300 if (adapter
->cmd_sent
|| adapter
->curr_cmd
||
301 (!is_command_pending(adapter
)))
306 /* Check for event */
307 if (adapter
->event_received
) {
308 adapter
->event_received
= false;
309 mwifiex_process_event(adapter
);
312 /* Check for Cmd Resp */
313 if (adapter
->cmd_resp_received
) {
314 adapter
->cmd_resp_received
= false;
315 mwifiex_process_cmdresp(adapter
);
317 /* call mwifiex back when init_fw is done */
318 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_INIT_DONE
) {
319 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
320 mwifiex_init_fw_complete(adapter
);
324 /* Check if we need to confirm Sleep Request
325 received previously */
326 if (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) {
327 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
)
328 mwifiex_check_ps_cond(adapter
);
331 /* * The ps_state may have been changed during processing of
332 * Sleep Request event.
334 if ((adapter
->ps_state
== PS_STATE_SLEEP
) ||
335 (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) ||
336 (adapter
->ps_state
== PS_STATE_SLEEP_CFM
) ||
337 adapter
->tx_lock_flag
){
338 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
342 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
) {
343 if (mwifiex_exec_next_cmd(adapter
) == -1) {
349 if ((adapter
->scan_chan_gap_enabled
||
350 !adapter
->scan_processing
) &&
351 !adapter
->data_sent
&&
352 !skb_queue_empty(&adapter
->tx_data_q
)) {
353 mwifiex_process_tx_queue(adapter
);
354 if (adapter
->hs_activated
) {
355 adapter
->is_hs_configured
= false;
356 mwifiex_hs_activated_event
358 (adapter
, MWIFIEX_BSS_ROLE_ANY
),
363 if ((adapter
->scan_chan_gap_enabled
||
364 !adapter
->scan_processing
) &&
365 !adapter
->data_sent
&& !mwifiex_wmm_lists_empty(adapter
)) {
366 mwifiex_wmm_process_tx(adapter
);
367 if (adapter
->hs_activated
) {
368 adapter
->is_hs_configured
= false;
369 mwifiex_hs_activated_event
371 (adapter
, MWIFIEX_BSS_ROLE_ANY
),
376 if (adapter
->delay_null_pkt
&& !adapter
->cmd_sent
&&
377 !adapter
->curr_cmd
&& !is_command_pending(adapter
) &&
378 (mwifiex_wmm_lists_empty(adapter
) &&
379 skb_queue_empty(&adapter
->tx_data_q
))) {
380 if (!mwifiex_send_null_packet
381 (mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
382 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
|
383 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET
)) {
384 adapter
->delay_null_pkt
= false;
385 adapter
->ps_state
= PS_STATE_SLEEP
;
389 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
392 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
393 if (adapter
->more_task_flag
)
395 adapter
->mwifiex_processing
= false;
396 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
399 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
)
400 mwifiex_shutdown_drv(adapter
);
403 EXPORT_SYMBOL_GPL(mwifiex_main_process
);
406 * This function frees the adapter structure.
408 * Additionally, this closes the netlink socket, frees the timers
409 * and private structures.
411 static void mwifiex_free_adapter(struct mwifiex_adapter
*adapter
)
414 pr_err("%s: adapter is NULL\n", __func__
);
418 mwifiex_unregister(adapter
);
419 pr_debug("info: %s: free adapter\n", __func__
);
423 * This function cancels all works in the queue and destroys
424 * the main workqueue.
426 static void mwifiex_terminate_workqueue(struct mwifiex_adapter
*adapter
)
428 flush_workqueue(adapter
->workqueue
);
429 destroy_workqueue(adapter
->workqueue
);
430 adapter
->workqueue
= NULL
;
432 if (adapter
->rx_workqueue
) {
433 flush_workqueue(adapter
->rx_workqueue
);
434 destroy_workqueue(adapter
->rx_workqueue
);
435 adapter
->rx_workqueue
= NULL
;
440 * This function gets firmware and initializes it.
442 * The main initialization steps followed are -
443 * - Download the correct firmware to card
444 * - Issue the init commands to firmware
446 static void mwifiex_fw_dpc(const struct firmware
*firmware
, void *context
)
450 struct mwifiex_private
*priv
;
451 struct mwifiex_adapter
*adapter
= context
;
452 struct mwifiex_fw_image fw
;
453 struct semaphore
*sem
= adapter
->card_sem
;
454 bool init_failed
= false;
455 struct wireless_dev
*wdev
;
458 dev_err(adapter
->dev
,
459 "Failed to get firmware %s\n", adapter
->fw_name
);
463 memset(&fw
, 0, sizeof(struct mwifiex_fw_image
));
464 adapter
->firmware
= firmware
;
465 fw
.fw_buf
= (u8
*) adapter
->firmware
->data
;
466 fw
.fw_len
= adapter
->firmware
->size
;
468 if (adapter
->if_ops
.dnld_fw
)
469 ret
= adapter
->if_ops
.dnld_fw(adapter
, &fw
);
471 ret
= mwifiex_dnld_fw(adapter
, &fw
);
475 dev_notice(adapter
->dev
, "WLAN FW is active\n");
478 if ((request_firmware(&adapter
->cal_data
, cal_data_cfg
,
480 dev_err(adapter
->dev
,
481 "Cal data request_firmware() failed\n");
484 /* enable host interrupt after fw dnld is successful */
485 if (adapter
->if_ops
.enable_int
) {
486 if (adapter
->if_ops
.enable_int(adapter
))
490 adapter
->init_wait_q_woken
= false;
491 ret
= mwifiex_init_fw(adapter
);
495 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
498 /* Wait for mwifiex_init to complete */
499 wait_event_interruptible(adapter
->init_wait_q
,
500 adapter
->init_wait_q_woken
);
501 if (adapter
->hw_status
!= MWIFIEX_HW_STATUS_READY
)
504 priv
= adapter
->priv
[MWIFIEX_BSS_ROLE_STA
];
505 if (mwifiex_register_cfg80211(adapter
)) {
506 dev_err(adapter
->dev
, "cannot register with cfg80211\n");
510 if (mwifiex_init_channel_scan_gap(adapter
)) {
511 dev_err(adapter
->dev
, "could not init channel stats table\n");
516 driver_mode
&= MWIFIEX_DRIVER_MODE_BITMASK
;
517 driver_mode
|= MWIFIEX_DRIVER_MODE_STA
;
521 /* Create station interface by default */
522 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "mlan%d",
523 NL80211_IFTYPE_STATION
, NULL
, NULL
);
525 dev_err(adapter
->dev
, "cannot create default STA interface\n");
530 if (driver_mode
& MWIFIEX_DRIVER_MODE_UAP
) {
531 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "uap%d",
532 NL80211_IFTYPE_AP
, NULL
, NULL
);
534 dev_err(adapter
->dev
, "cannot create AP interface\n");
540 if (driver_mode
& MWIFIEX_DRIVER_MODE_P2P
) {
541 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "p2p%d",
542 NL80211_IFTYPE_P2P_CLIENT
, NULL
,
545 dev_err(adapter
->dev
,
546 "cannot create p2p client interface\n");
553 mwifiex_drv_get_driver_version(adapter
, fmt
, sizeof(fmt
) - 1);
554 dev_notice(adapter
->dev
, "driver_version = %s\n", fmt
);
558 wiphy_unregister(adapter
->wiphy
);
559 wiphy_free(adapter
->wiphy
);
561 if (adapter
->if_ops
.disable_int
)
562 adapter
->if_ops
.disable_int(adapter
);
564 pr_debug("info: %s: unregister device\n", __func__
);
565 if (adapter
->if_ops
.unregister_dev
)
566 adapter
->if_ops
.unregister_dev(adapter
);
568 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
) {
569 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
570 adapter
->init_wait_q_woken
= false;
572 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
573 wait_event_interruptible(adapter
->init_wait_q
,
574 adapter
->init_wait_q_woken
);
576 adapter
->surprise_removed
= true;
577 mwifiex_terminate_workqueue(adapter
);
580 if (adapter
->cal_data
) {
581 release_firmware(adapter
->cal_data
);
582 adapter
->cal_data
= NULL
;
584 if (adapter
->firmware
) {
585 release_firmware(adapter
->firmware
);
586 adapter
->firmware
= NULL
;
589 mwifiex_free_adapter(adapter
);
595 * This function initializes the hardware and gets firmware.
597 static int mwifiex_init_hw_fw(struct mwifiex_adapter
*adapter
)
601 ret
= request_firmware_nowait(THIS_MODULE
, 1, adapter
->fw_name
,
602 adapter
->dev
, GFP_KERNEL
, adapter
,
605 dev_err(adapter
->dev
,
606 "request_firmware_nowait() returned error %d\n", ret
);
611 * CFG802.11 network device handler for open.
613 * Starts the data queue.
616 mwifiex_open(struct net_device
*dev
)
618 netif_carrier_off(dev
);
624 * CFG802.11 network device handler for close.
627 mwifiex_close(struct net_device
*dev
)
629 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
631 if (priv
->scan_request
) {
632 dev_dbg(priv
->adapter
->dev
, "aborting scan on ndo_stop\n");
633 cfg80211_scan_done(priv
->scan_request
, 1);
634 priv
->scan_request
= NULL
;
635 priv
->scan_aborting
= true;
642 * Add buffer into wmm tx queue and queue work to transmit it.
644 int mwifiex_queue_tx_pkt(struct mwifiex_private
*priv
, struct sk_buff
*skb
)
646 struct netdev_queue
*txq
;
647 int index
= mwifiex_1d_to_wmm_queue
[skb
->priority
];
649 if (atomic_inc_return(&priv
->wmm_tx_pending
[index
]) >= MAX_TX_PENDING
) {
650 txq
= netdev_get_tx_queue(priv
->netdev
, index
);
651 if (!netif_tx_queue_stopped(txq
)) {
652 netif_tx_stop_queue(txq
);
653 dev_dbg(priv
->adapter
->dev
, "stop queue: %d\n", index
);
657 atomic_inc(&priv
->adapter
->tx_pending
);
658 mwifiex_wmm_add_buf_txqueue(priv
, skb
);
660 mwifiex_queue_main_work(priv
->adapter
);
666 mwifiex_clone_skb_for_tx_status(struct mwifiex_private
*priv
,
667 struct sk_buff
*skb
, u8 flag
, u64
*cookie
)
669 struct sk_buff
*orig_skb
= skb
;
670 struct mwifiex_txinfo
*tx_info
, *orig_tx_info
;
672 skb
= skb_clone(skb
, GFP_ATOMIC
);
677 spin_lock_irqsave(&priv
->ack_status_lock
, flags
);
678 id
= idr_alloc(&priv
->ack_status_frames
, orig_skb
,
679 1, 0xff, GFP_ATOMIC
);
680 spin_unlock_irqrestore(&priv
->ack_status_lock
, flags
);
683 tx_info
= MWIFIEX_SKB_TXCB(skb
);
684 tx_info
->ack_frame_id
= id
;
685 tx_info
->flags
|= flag
;
686 orig_tx_info
= MWIFIEX_SKB_TXCB(orig_skb
);
687 orig_tx_info
->ack_frame_id
= id
;
688 orig_tx_info
->flags
|= flag
;
690 if (flag
== MWIFIEX_BUF_FLAG_ACTION_TX_STATUS
&& cookie
)
691 orig_tx_info
->cookie
= *cookie
;
693 } else if (skb_shared(skb
)) {
700 /* couldn't clone -- lose tx status ... */
708 * CFG802.11 network device handler for data transmission.
711 mwifiex_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
713 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
714 struct sk_buff
*new_skb
;
715 struct mwifiex_txinfo
*tx_info
;
718 dev_dbg(priv
->adapter
->dev
, "data: %lu BSS(%d-%d): Data <= kernel\n",
719 jiffies
, priv
->bss_type
, priv
->bss_num
);
721 if (priv
->adapter
->surprise_removed
) {
723 priv
->stats
.tx_dropped
++;
726 if (!skb
->len
|| (skb
->len
> ETH_FRAME_LEN
)) {
727 dev_err(priv
->adapter
->dev
, "Tx: bad skb len %d\n", skb
->len
);
729 priv
->stats
.tx_dropped
++;
732 if (skb_headroom(skb
) < MWIFIEX_MIN_DATA_HEADER_LEN
) {
733 dev_dbg(priv
->adapter
->dev
,
734 "data: Tx: insufficient skb headroom %d\n",
736 /* Insufficient skb headroom - allocate a new skb */
738 skb_realloc_headroom(skb
, MWIFIEX_MIN_DATA_HEADER_LEN
);
739 if (unlikely(!new_skb
)) {
740 dev_err(priv
->adapter
->dev
, "Tx: cannot alloca new_skb\n");
742 priv
->stats
.tx_dropped
++;
747 dev_dbg(priv
->adapter
->dev
, "info: new skb headroomd %d\n",
751 tx_info
= MWIFIEX_SKB_TXCB(skb
);
752 memset(tx_info
, 0, sizeof(*tx_info
));
753 tx_info
->bss_num
= priv
->bss_num
;
754 tx_info
->bss_type
= priv
->bss_type
;
755 tx_info
->pkt_len
= skb
->len
;
757 multicast
= is_multicast_ether_addr(skb
->data
);
759 if (unlikely(!multicast
&& skb
->sk
&&
760 skb_shinfo(skb
)->tx_flags
& SKBTX_WIFI_STATUS
&&
761 priv
->adapter
->fw_api_ver
== MWIFIEX_FW_V15
))
762 skb
= mwifiex_clone_skb_for_tx_status(priv
,
764 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS
, NULL
);
766 /* Record the current time the packet was queued; used to
767 * determine the amount of time the packet was queued in
768 * the driver before it was sent to the firmware.
769 * The delay is then sent along with the packet to the
770 * firmware for aggregate delay calculation for stats and
771 * MSDU lifetime expiry.
773 __net_timestamp(skb
);
775 if (ISSUPP_TDLS_ENABLED(priv
->adapter
->fw_cap_info
) &&
776 priv
->bss_type
== MWIFIEX_BSS_TYPE_STA
&&
777 !ether_addr_equal_unaligned(priv
->cfg_bssid
, skb
->data
)) {
778 if (priv
->adapter
->auto_tdls
&& priv
->check_tdls_tx
)
779 mwifiex_tdls_check_tx(priv
, skb
);
782 mwifiex_queue_tx_pkt(priv
, skb
);
788 * CFG802.11 network device handler for setting MAC address.
791 mwifiex_set_mac_address(struct net_device
*dev
, void *addr
)
793 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
794 struct sockaddr
*hw_addr
= addr
;
797 memcpy(priv
->curr_addr
, hw_addr
->sa_data
, ETH_ALEN
);
799 /* Send request to firmware */
800 ret
= mwifiex_send_cmd(priv
, HostCmd_CMD_802_11_MAC_ADDRESS
,
801 HostCmd_ACT_GEN_SET
, 0, NULL
, true);
804 memcpy(priv
->netdev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
806 dev_err(priv
->adapter
->dev
,
807 "set mac address failed: ret=%d\n", ret
);
809 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
815 * CFG802.11 network device handler for setting multicast list.
817 static void mwifiex_set_multicast_list(struct net_device
*dev
)
819 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
820 struct mwifiex_multicast_list mcast_list
;
822 if (dev
->flags
& IFF_PROMISC
) {
823 mcast_list
.mode
= MWIFIEX_PROMISC_MODE
;
824 } else if (dev
->flags
& IFF_ALLMULTI
||
825 netdev_mc_count(dev
) > MWIFIEX_MAX_MULTICAST_LIST_SIZE
) {
826 mcast_list
.mode
= MWIFIEX_ALL_MULTI_MODE
;
828 mcast_list
.mode
= MWIFIEX_MULTICAST_MODE
;
829 mcast_list
.num_multicast_addr
=
830 mwifiex_copy_mcast_addr(&mcast_list
, dev
);
832 mwifiex_request_set_multicast_list(priv
, &mcast_list
);
836 * CFG802.11 network device handler for transmission timeout.
839 mwifiex_tx_timeout(struct net_device
*dev
)
841 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
843 priv
->num_tx_timeout
++;
844 priv
->tx_timeout_cnt
++;
845 dev_err(priv
->adapter
->dev
,
846 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
847 jiffies
, priv
->tx_timeout_cnt
, priv
->bss_type
, priv
->bss_num
);
848 mwifiex_set_trans_start(dev
);
850 if (priv
->tx_timeout_cnt
> TX_TIMEOUT_THRESHOLD
&&
851 priv
->adapter
->if_ops
.card_reset
) {
852 dev_err(priv
->adapter
->dev
,
853 "tx_timeout_cnt exceeds threshold. Triggering card reset!\n");
854 priv
->adapter
->if_ops
.card_reset(priv
->adapter
);
858 void mwifiex_dump_drv_info(struct mwifiex_adapter
*adapter
)
861 char drv_version
[64];
862 struct usb_card_rec
*cardp
;
863 struct sdio_mmc_card
*sdio_card
;
864 struct mwifiex_private
*priv
;
866 struct netdev_queue
*txq
;
867 struct mwifiex_debug_info
*debug_info
;
869 if (adapter
->drv_info_dump
) {
870 vfree(adapter
->drv_info_dump
);
871 adapter
->drv_info_size
= 0;
874 dev_info(adapter
->dev
, "=== DRIVER INFO DUMP START===\n");
876 adapter
->drv_info_dump
= vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX
);
878 if (!adapter
->drv_info_dump
)
881 p
= (char *)(adapter
->drv_info_dump
);
882 p
+= sprintf(p
, "driver_name = " "\"mwifiex\"\n");
884 mwifiex_drv_get_driver_version(adapter
, drv_version
,
885 sizeof(drv_version
) - 1);
886 p
+= sprintf(p
, "driver_version = %s\n", drv_version
);
888 if (adapter
->iface_type
== MWIFIEX_USB
) {
889 cardp
= (struct usb_card_rec
*)adapter
->card
;
890 p
+= sprintf(p
, "tx_cmd_urb_pending = %d\n",
891 atomic_read(&cardp
->tx_cmd_urb_pending
));
892 p
+= sprintf(p
, "tx_data_urb_pending = %d\n",
893 atomic_read(&cardp
->tx_data_urb_pending
));
894 p
+= sprintf(p
, "rx_cmd_urb_pending = %d\n",
895 atomic_read(&cardp
->rx_cmd_urb_pending
));
896 p
+= sprintf(p
, "rx_data_urb_pending = %d\n",
897 atomic_read(&cardp
->rx_data_urb_pending
));
900 p
+= sprintf(p
, "tx_pending = %d\n",
901 atomic_read(&adapter
->tx_pending
));
902 p
+= sprintf(p
, "rx_pending = %d\n",
903 atomic_read(&adapter
->rx_pending
));
905 if (adapter
->iface_type
== MWIFIEX_SDIO
) {
906 sdio_card
= (struct sdio_mmc_card
*)adapter
->card
;
907 p
+= sprintf(p
, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
908 sdio_card
->mp_rd_bitmap
, sdio_card
->curr_rd_port
);
909 p
+= sprintf(p
, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
910 sdio_card
->mp_wr_bitmap
, sdio_card
->curr_wr_port
);
913 for (i
= 0; i
< adapter
->priv_num
; i
++) {
914 if (!adapter
->priv
[i
] || !adapter
->priv
[i
]->netdev
)
916 priv
= adapter
->priv
[i
];
917 p
+= sprintf(p
, "\n[interface : \"%s\"]\n",
919 p
+= sprintf(p
, "wmm_tx_pending[0] = %d\n",
920 atomic_read(&priv
->wmm_tx_pending
[0]));
921 p
+= sprintf(p
, "wmm_tx_pending[1] = %d\n",
922 atomic_read(&priv
->wmm_tx_pending
[1]));
923 p
+= sprintf(p
, "wmm_tx_pending[2] = %d\n",
924 atomic_read(&priv
->wmm_tx_pending
[2]));
925 p
+= sprintf(p
, "wmm_tx_pending[3] = %d\n",
926 atomic_read(&priv
->wmm_tx_pending
[3]));
927 p
+= sprintf(p
, "media_state=\"%s\"\n", !priv
->media_connected
?
928 "Disconnected" : "Connected");
929 p
+= sprintf(p
, "carrier %s\n", (netif_carrier_ok(priv
->netdev
)
931 for (idx
= 0; idx
< priv
->netdev
->num_tx_queues
; idx
++) {
932 txq
= netdev_get_tx_queue(priv
->netdev
, idx
);
933 p
+= sprintf(p
, "tx queue %d:%s ", idx
,
934 netif_tx_queue_stopped(txq
) ?
935 "stopped" : "started");
937 p
+= sprintf(p
, "\n%s: num_tx_timeout = %d\n",
938 priv
->netdev
->name
, priv
->num_tx_timeout
);
941 if (adapter
->iface_type
== MWIFIEX_SDIO
) {
942 p
+= sprintf(p
, "\n=== SDIO register DUMP===\n");
943 if (adapter
->if_ops
.reg_dump
)
944 p
+= adapter
->if_ops
.reg_dump(adapter
, p
);
947 p
+= sprintf(p
, "\n=== MORE DEBUG INFORMATION\n");
948 debug_info
= kzalloc(sizeof(*debug_info
), GFP_KERNEL
);
950 for (i
= 0; i
< adapter
->priv_num
; i
++) {
951 if (!adapter
->priv
[i
] || !adapter
->priv
[i
]->netdev
)
953 priv
= adapter
->priv
[i
];
954 mwifiex_get_debug_info(priv
, debug_info
);
955 p
+= mwifiex_debug_info_to_buffer(priv
, p
, debug_info
);
961 adapter
->drv_info_size
= p
- adapter
->drv_info_dump
;
962 dev_info(adapter
->dev
, "=== DRIVER INFO DUMP END===\n");
964 EXPORT_SYMBOL_GPL(mwifiex_dump_drv_info
);
967 * CFG802.11 network device handler for statistics retrieval.
969 static struct net_device_stats
*mwifiex_get_stats(struct net_device
*dev
)
971 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
977 mwifiex_netdev_select_wmm_queue(struct net_device
*dev
, struct sk_buff
*skb
,
978 void *accel_priv
, select_queue_fallback_t fallback
)
980 skb
->priority
= cfg80211_classify8021d(skb
, NULL
);
981 return mwifiex_1d_to_wmm_queue
[skb
->priority
];
984 /* Network device handlers */
985 static const struct net_device_ops mwifiex_netdev_ops
= {
986 .ndo_open
= mwifiex_open
,
987 .ndo_stop
= mwifiex_close
,
988 .ndo_start_xmit
= mwifiex_hard_start_xmit
,
989 .ndo_set_mac_address
= mwifiex_set_mac_address
,
990 .ndo_tx_timeout
= mwifiex_tx_timeout
,
991 .ndo_get_stats
= mwifiex_get_stats
,
992 .ndo_set_rx_mode
= mwifiex_set_multicast_list
,
993 .ndo_select_queue
= mwifiex_netdev_select_wmm_queue
,
997 * This function initializes the private structure parameters.
999 * The following wait queues are initialized -
1000 * - IOCTL wait queue
1001 * - Command wait queue
1002 * - Statistics wait queue
1004 * ...and the following default parameters are set -
1005 * - Current key index : Set to 0
1006 * - Rate index : Set to auto
1007 * - Media connected : Set to disconnected
1008 * - Adhoc link sensed : Set to false
1009 * - Nick name : Set to null
1010 * - Number of Tx timeout : Set to 0
1011 * - Device address : Set to current address
1012 * - Rx histogram statistc : Set to 0
1014 * In addition, the CFG80211 work queue is also created.
1016 void mwifiex_init_priv_params(struct mwifiex_private
*priv
,
1017 struct net_device
*dev
)
1019 dev
->netdev_ops
= &mwifiex_netdev_ops
;
1020 dev
->destructor
= free_netdev
;
1021 /* Initialize private structure */
1022 priv
->current_key_index
= 0;
1023 priv
->media_connected
= false;
1024 memset(priv
->mgmt_ie
, 0,
1025 sizeof(struct mwifiex_ie
) * MAX_MGMT_IE_INDEX
);
1026 priv
->beacon_idx
= MWIFIEX_AUTO_IDX_MASK
;
1027 priv
->proberesp_idx
= MWIFIEX_AUTO_IDX_MASK
;
1028 priv
->assocresp_idx
= MWIFIEX_AUTO_IDX_MASK
;
1029 priv
->gen_idx
= MWIFIEX_AUTO_IDX_MASK
;
1030 priv
->num_tx_timeout
= 0;
1031 ether_addr_copy(priv
->curr_addr
, priv
->adapter
->perm_addr
);
1032 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
1034 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
||
1035 GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_UAP
) {
1036 priv
->hist_data
= kmalloc(sizeof(*priv
->hist_data
), GFP_KERNEL
);
1037 if (priv
->hist_data
)
1038 mwifiex_hist_data_reset(priv
);
1043 * This function check if command is pending.
1045 int is_command_pending(struct mwifiex_adapter
*adapter
)
1047 unsigned long flags
;
1048 int is_cmd_pend_q_empty
;
1050 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, flags
);
1051 is_cmd_pend_q_empty
= list_empty(&adapter
->cmd_pending_q
);
1052 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, flags
);
1054 return !is_cmd_pend_q_empty
;
1058 * This is the RX work queue function.
1060 * It handles the RX operations.
1062 static void mwifiex_rx_work_queue(struct work_struct
*work
)
1064 struct mwifiex_adapter
*adapter
=
1065 container_of(work
, struct mwifiex_adapter
, rx_work
);
1067 if (adapter
->surprise_removed
)
1069 mwifiex_process_rx(adapter
);
1073 * This is the main work queue function.
1075 * It handles the main process, which in turn handles the complete
1076 * driver operations.
1078 static void mwifiex_main_work_queue(struct work_struct
*work
)
1080 struct mwifiex_adapter
*adapter
=
1081 container_of(work
, struct mwifiex_adapter
, main_work
);
1083 if (adapter
->surprise_removed
)
1085 mwifiex_main_process(adapter
);
1089 * This function adds the card.
1091 * This function follows the following major steps to set up the device -
1092 * - Initialize software. This includes probing the card, registering
1093 * the interface operations table, and allocating/initializing the
1095 * - Set up the netlink socket
1096 * - Create and start the main work queue
1097 * - Register the device
1098 * - Initialize firmware and hardware
1099 * - Add logical interfaces
1102 mwifiex_add_card(void *card
, struct semaphore
*sem
,
1103 struct mwifiex_if_ops
*if_ops
, u8 iface_type
)
1105 struct mwifiex_adapter
*adapter
;
1107 if (down_interruptible(sem
))
1110 if (mwifiex_register(card
, if_ops
, (void **)&adapter
)) {
1111 pr_err("%s: software init failed\n", __func__
);
1115 adapter
->iface_type
= iface_type
;
1116 adapter
->card_sem
= sem
;
1118 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
1119 adapter
->surprise_removed
= false;
1120 init_waitqueue_head(&adapter
->init_wait_q
);
1121 adapter
->is_suspended
= false;
1122 adapter
->hs_activated
= false;
1123 init_waitqueue_head(&adapter
->hs_activate_wait_q
);
1124 init_waitqueue_head(&adapter
->cmd_wait_q
.wait
);
1125 adapter
->cmd_wait_q
.status
= 0;
1126 adapter
->scan_wait_q_woken
= false;
1128 if ((num_possible_cpus() > 1) || adapter
->iface_type
== MWIFIEX_USB
) {
1129 adapter
->rx_work_enabled
= true;
1130 pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
1133 adapter
->workqueue
=
1134 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1135 WQ_HIGHPRI
| WQ_MEM_RECLAIM
| WQ_UNBOUND
, 1);
1136 if (!adapter
->workqueue
)
1139 INIT_WORK(&adapter
->main_work
, mwifiex_main_work_queue
);
1141 if (adapter
->rx_work_enabled
) {
1142 adapter
->rx_workqueue
= alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1146 if (!adapter
->rx_workqueue
)
1149 INIT_WORK(&adapter
->rx_work
, mwifiex_rx_work_queue
);
1152 if (adapter
->if_ops
.iface_work
)
1153 INIT_WORK(&adapter
->iface_work
, adapter
->if_ops
.iface_work
);
1155 /* Register the device. Fill up the private data structure with relevant
1156 information from the card. */
1157 if (adapter
->if_ops
.register_dev(adapter
)) {
1158 pr_err("%s: failed to register mwifiex device\n", __func__
);
1159 goto err_registerdev
;
1162 if (mwifiex_init_hw_fw(adapter
)) {
1163 pr_err("%s: firmware init failed\n", __func__
);
1170 pr_debug("info: %s: unregister device\n", __func__
);
1171 if (adapter
->if_ops
.unregister_dev
)
1172 adapter
->if_ops
.unregister_dev(adapter
);
1173 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
) {
1174 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
1175 adapter
->init_wait_q_woken
= false;
1177 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
1178 wait_event_interruptible(adapter
->init_wait_q
,
1179 adapter
->init_wait_q_woken
);
1182 adapter
->surprise_removed
= true;
1183 mwifiex_terminate_workqueue(adapter
);
1185 mwifiex_free_adapter(adapter
);
1193 EXPORT_SYMBOL_GPL(mwifiex_add_card
);
1196 * This function removes the card.
1198 * This function follows the following major steps to remove the device -
1199 * - Stop data traffic
1200 * - Shutdown firmware
1201 * - Remove the logical interfaces
1202 * - Terminate the work queue
1203 * - Unregister the device
1204 * - Free the adapter structure
1206 int mwifiex_remove_card(struct mwifiex_adapter
*adapter
, struct semaphore
*sem
)
1208 struct mwifiex_private
*priv
= NULL
;
1211 if (down_interruptible(sem
))
1217 /* We can no longer handle interrupts once we start doing the teardown
1219 if (adapter
->if_ops
.disable_int
)
1220 adapter
->if_ops
.disable_int(adapter
);
1222 adapter
->surprise_removed
= true;
1224 mwifiex_terminate_workqueue(adapter
);
1227 for (i
= 0; i
< adapter
->priv_num
; i
++) {
1228 priv
= adapter
->priv
[i
];
1229 if (priv
&& priv
->netdev
) {
1230 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
1231 if (netif_carrier_ok(priv
->netdev
))
1232 netif_carrier_off(priv
->netdev
);
1236 dev_dbg(adapter
->dev
, "cmd: calling mwifiex_shutdown_drv...\n");
1237 adapter
->init_wait_q_woken
= false;
1239 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
1240 wait_event_interruptible(adapter
->init_wait_q
,
1241 adapter
->init_wait_q_woken
);
1242 dev_dbg(adapter
->dev
, "cmd: mwifiex_shutdown_drv done\n");
1243 if (atomic_read(&adapter
->rx_pending
) ||
1244 atomic_read(&adapter
->tx_pending
) ||
1245 atomic_read(&adapter
->cmd_pending
)) {
1246 dev_err(adapter
->dev
, "rx_pending=%d, tx_pending=%d, "
1248 atomic_read(&adapter
->rx_pending
),
1249 atomic_read(&adapter
->tx_pending
),
1250 atomic_read(&adapter
->cmd_pending
));
1253 for (i
= 0; i
< adapter
->priv_num
; i
++) {
1254 priv
= adapter
->priv
[i
];
1261 priv
->wdev
.iftype
!= NL80211_IFTYPE_UNSPECIFIED
)
1262 mwifiex_del_virtual_intf(adapter
->wiphy
, &priv
->wdev
);
1266 wiphy_unregister(adapter
->wiphy
);
1267 wiphy_free(adapter
->wiphy
);
1269 /* Unregister device */
1270 dev_dbg(adapter
->dev
, "info: unregister device\n");
1271 if (adapter
->if_ops
.unregister_dev
)
1272 adapter
->if_ops
.unregister_dev(adapter
);
1273 /* Free adapter structure */
1274 dev_dbg(adapter
->dev
, "info: free adapter\n");
1275 mwifiex_free_adapter(adapter
);
1282 EXPORT_SYMBOL_GPL(mwifiex_remove_card
);
1285 * This function initializes the module.
1287 * The debug FS is also initialized if configured.
1290 mwifiex_init_module(void)
1292 #ifdef CONFIG_DEBUG_FS
1293 mwifiex_debugfs_init();
1299 * This function cleans up the module.
1301 * The debug FS is removed if available.
1304 mwifiex_cleanup_module(void)
1306 #ifdef CONFIG_DEBUG_FS
1307 mwifiex_debugfs_remove();
1311 module_init(mwifiex_init_module
);
1312 module_exit(mwifiex_cleanup_module
);
1314 MODULE_AUTHOR("Marvell International Ltd.");
1315 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION
);
1316 MODULE_VERSION(VERSION
);
1317 MODULE_LICENSE("GPL v2");