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;
234 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
238 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
) ||
239 (adapter
->hw_status
== MWIFIEX_HW_STATUS_NOT_READY
))
242 /* For non-USB interfaces, If we process interrupts first, it
243 * would increase RX pending even further. Avoid this by
244 * checking if rx_pending has crossed high threshold and
245 * schedule rx work queue and then process interrupts.
246 * For USB interface, there are no interrupts. We already have
247 * HIGH_RX_PENDING check in usb.c
249 if (atomic_read(&adapter
->rx_pending
) >= HIGH_RX_PENDING
&&
250 adapter
->iface_type
!= MWIFIEX_USB
) {
251 adapter
->delay_main_work
= true;
252 mwifiex_queue_rx_work(adapter
);
256 /* Handle pending interrupt if any */
257 if (adapter
->int_status
) {
258 if (adapter
->hs_activated
)
259 mwifiex_process_hs_config(adapter
);
260 if (adapter
->if_ops
.process_int_status
)
261 adapter
->if_ops
.process_int_status(adapter
);
264 if (adapter
->rx_work_enabled
&& adapter
->data_received
)
265 mwifiex_queue_rx_work(adapter
);
267 /* Need to wake up the card ? */
268 if ((adapter
->ps_state
== PS_STATE_SLEEP
) &&
269 (adapter
->pm_wakeup_card_req
&&
270 !adapter
->pm_wakeup_fw_try
) &&
271 (is_command_pending(adapter
) ||
272 !skb_queue_empty(&adapter
->tx_data_q
) ||
273 !mwifiex_wmm_lists_empty(adapter
))) {
274 adapter
->pm_wakeup_fw_try
= true;
275 mod_timer(&adapter
->wakeup_timer
, jiffies
+ (HZ
*3));
276 adapter
->if_ops
.wakeup(adapter
);
280 if (IS_CARD_RX_RCVD(adapter
)) {
281 adapter
->data_received
= false;
282 adapter
->pm_wakeup_fw_try
= false;
283 del_timer(&adapter
->wakeup_timer
);
284 if (adapter
->ps_state
== PS_STATE_SLEEP
)
285 adapter
->ps_state
= PS_STATE_AWAKE
;
287 /* We have tried to wakeup the card already */
288 if (adapter
->pm_wakeup_fw_try
)
290 if (adapter
->ps_state
!= PS_STATE_AWAKE
||
291 adapter
->tx_lock_flag
)
294 if ((!adapter
->scan_chan_gap_enabled
&&
295 adapter
->scan_processing
) || adapter
->data_sent
||
296 (mwifiex_wmm_lists_empty(adapter
) &&
297 skb_queue_empty(&adapter
->tx_data_q
))) {
298 if (adapter
->cmd_sent
|| adapter
->curr_cmd
||
299 (!is_command_pending(adapter
)))
304 /* Check for event */
305 if (adapter
->event_received
) {
306 adapter
->event_received
= false;
307 mwifiex_process_event(adapter
);
310 /* Check for Cmd Resp */
311 if (adapter
->cmd_resp_received
) {
312 adapter
->cmd_resp_received
= false;
313 mwifiex_process_cmdresp(adapter
);
315 /* call mwifiex back when init_fw is done */
316 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_INIT_DONE
) {
317 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
318 mwifiex_init_fw_complete(adapter
);
322 /* Check if we need to confirm Sleep Request
323 received previously */
324 if (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) {
325 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
)
326 mwifiex_check_ps_cond(adapter
);
329 /* * The ps_state may have been changed during processing of
330 * Sleep Request event.
332 if ((adapter
->ps_state
== PS_STATE_SLEEP
) ||
333 (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) ||
334 (adapter
->ps_state
== PS_STATE_SLEEP_CFM
) ||
335 adapter
->tx_lock_flag
){
339 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
) {
340 if (mwifiex_exec_next_cmd(adapter
) == -1) {
346 if ((adapter
->scan_chan_gap_enabled
||
347 !adapter
->scan_processing
) &&
348 !adapter
->data_sent
&&
349 !skb_queue_empty(&adapter
->tx_data_q
)) {
350 mwifiex_process_tx_queue(adapter
);
351 if (adapter
->hs_activated
) {
352 adapter
->is_hs_configured
= false;
353 mwifiex_hs_activated_event
355 (adapter
, MWIFIEX_BSS_ROLE_ANY
),
360 if ((adapter
->scan_chan_gap_enabled
||
361 !adapter
->scan_processing
) &&
362 !adapter
->data_sent
&& !mwifiex_wmm_lists_empty(adapter
)) {
363 mwifiex_wmm_process_tx(adapter
);
364 if (adapter
->hs_activated
) {
365 adapter
->is_hs_configured
= false;
366 mwifiex_hs_activated_event
368 (adapter
, MWIFIEX_BSS_ROLE_ANY
),
373 if (adapter
->delay_null_pkt
&& !adapter
->cmd_sent
&&
374 !adapter
->curr_cmd
&& !is_command_pending(adapter
) &&
375 (mwifiex_wmm_lists_empty(adapter
) &&
376 skb_queue_empty(&adapter
->tx_data_q
))) {
377 if (!mwifiex_send_null_packet
378 (mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
379 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
|
380 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET
)) {
381 adapter
->delay_null_pkt
= false;
382 adapter
->ps_state
= PS_STATE_SLEEP
;
388 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
389 if (adapter
->more_task_flag
) {
390 adapter
->more_task_flag
= false;
391 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
394 adapter
->mwifiex_processing
= false;
395 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
398 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
)
399 mwifiex_shutdown_drv(adapter
);
402 EXPORT_SYMBOL_GPL(mwifiex_main_process
);
405 * This function frees the adapter structure.
407 * Additionally, this closes the netlink socket, frees the timers
408 * and private structures.
410 static void mwifiex_free_adapter(struct mwifiex_adapter
*adapter
)
413 pr_err("%s: adapter is NULL\n", __func__
);
417 mwifiex_unregister(adapter
);
418 pr_debug("info: %s: free adapter\n", __func__
);
422 * This function cancels all works in the queue and destroys
423 * the main workqueue.
425 static void mwifiex_terminate_workqueue(struct mwifiex_adapter
*adapter
)
427 flush_workqueue(adapter
->workqueue
);
428 destroy_workqueue(adapter
->workqueue
);
429 adapter
->workqueue
= NULL
;
431 if (adapter
->rx_workqueue
) {
432 flush_workqueue(adapter
->rx_workqueue
);
433 destroy_workqueue(adapter
->rx_workqueue
);
434 adapter
->rx_workqueue
= NULL
;
439 * This function gets firmware and initializes it.
441 * The main initialization steps followed are -
442 * - Download the correct firmware to card
443 * - Issue the init commands to firmware
445 static void mwifiex_fw_dpc(const struct firmware
*firmware
, void *context
)
449 struct mwifiex_private
*priv
;
450 struct mwifiex_adapter
*adapter
= context
;
451 struct mwifiex_fw_image fw
;
452 struct semaphore
*sem
= adapter
->card_sem
;
453 bool init_failed
= false;
454 struct wireless_dev
*wdev
;
457 dev_err(adapter
->dev
,
458 "Failed to get firmware %s\n", adapter
->fw_name
);
462 memset(&fw
, 0, sizeof(struct mwifiex_fw_image
));
463 adapter
->firmware
= firmware
;
464 fw
.fw_buf
= (u8
*) adapter
->firmware
->data
;
465 fw
.fw_len
= adapter
->firmware
->size
;
467 if (adapter
->if_ops
.dnld_fw
)
468 ret
= adapter
->if_ops
.dnld_fw(adapter
, &fw
);
470 ret
= mwifiex_dnld_fw(adapter
, &fw
);
474 dev_notice(adapter
->dev
, "WLAN FW is active\n");
477 if ((request_firmware(&adapter
->cal_data
, cal_data_cfg
,
479 dev_err(adapter
->dev
,
480 "Cal data request_firmware() failed\n");
483 /* enable host interrupt after fw dnld is successful */
484 if (adapter
->if_ops
.enable_int
) {
485 if (adapter
->if_ops
.enable_int(adapter
))
489 adapter
->init_wait_q_woken
= false;
490 ret
= mwifiex_init_fw(adapter
);
494 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
497 /* Wait for mwifiex_init to complete */
498 wait_event_interruptible(adapter
->init_wait_q
,
499 adapter
->init_wait_q_woken
);
500 if (adapter
->hw_status
!= MWIFIEX_HW_STATUS_READY
)
503 priv
= adapter
->priv
[MWIFIEX_BSS_ROLE_STA
];
504 if (mwifiex_register_cfg80211(adapter
)) {
505 dev_err(adapter
->dev
, "cannot register with cfg80211\n");
509 if (mwifiex_init_channel_scan_gap(adapter
)) {
510 dev_err(adapter
->dev
, "could not init channel stats table\n");
515 driver_mode
&= MWIFIEX_DRIVER_MODE_BITMASK
;
516 driver_mode
|= MWIFIEX_DRIVER_MODE_STA
;
520 /* Create station interface by default */
521 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "mlan%d", NET_NAME_ENUM
,
522 NL80211_IFTYPE_STATION
, NULL
, NULL
);
524 dev_err(adapter
->dev
, "cannot create default STA interface\n");
529 if (driver_mode
& MWIFIEX_DRIVER_MODE_UAP
) {
530 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "uap%d", NET_NAME_ENUM
,
531 NL80211_IFTYPE_AP
, NULL
, NULL
);
533 dev_err(adapter
->dev
, "cannot create AP interface\n");
539 if (driver_mode
& MWIFIEX_DRIVER_MODE_P2P
) {
540 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "p2p%d", NET_NAME_ENUM
,
541 NL80211_IFTYPE_P2P_CLIENT
, NULL
,
544 dev_err(adapter
->dev
,
545 "cannot create p2p client interface\n");
552 mwifiex_drv_get_driver_version(adapter
, fmt
, sizeof(fmt
) - 1);
553 dev_notice(adapter
->dev
, "driver_version = %s\n", fmt
);
557 wiphy_unregister(adapter
->wiphy
);
558 wiphy_free(adapter
->wiphy
);
560 if (adapter
->if_ops
.disable_int
)
561 adapter
->if_ops
.disable_int(adapter
);
563 pr_debug("info: %s: unregister device\n", __func__
);
564 if (adapter
->if_ops
.unregister_dev
)
565 adapter
->if_ops
.unregister_dev(adapter
);
567 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
) {
568 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
569 adapter
->init_wait_q_woken
= false;
571 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
572 wait_event_interruptible(adapter
->init_wait_q
,
573 adapter
->init_wait_q_woken
);
575 adapter
->surprise_removed
= true;
576 mwifiex_terminate_workqueue(adapter
);
579 if (adapter
->cal_data
) {
580 release_firmware(adapter
->cal_data
);
581 adapter
->cal_data
= NULL
;
583 if (adapter
->firmware
) {
584 release_firmware(adapter
->firmware
);
585 adapter
->firmware
= NULL
;
588 mwifiex_free_adapter(adapter
);
594 * This function initializes the hardware and gets firmware.
596 static int mwifiex_init_hw_fw(struct mwifiex_adapter
*adapter
)
600 ret
= request_firmware_nowait(THIS_MODULE
, 1, adapter
->fw_name
,
601 adapter
->dev
, GFP_KERNEL
, adapter
,
604 dev_err(adapter
->dev
,
605 "request_firmware_nowait() returned error %d\n", ret
);
610 * CFG802.11 network device handler for open.
612 * Starts the data queue.
615 mwifiex_open(struct net_device
*dev
)
617 netif_carrier_off(dev
);
623 * CFG802.11 network device handler for close.
626 mwifiex_close(struct net_device
*dev
)
628 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
630 if (priv
->scan_request
) {
631 dev_dbg(priv
->adapter
->dev
, "aborting scan on ndo_stop\n");
632 cfg80211_scan_done(priv
->scan_request
, 1);
633 priv
->scan_request
= NULL
;
634 priv
->scan_aborting
= true;
641 * Add buffer into wmm tx queue and queue work to transmit it.
643 int mwifiex_queue_tx_pkt(struct mwifiex_private
*priv
, struct sk_buff
*skb
)
645 struct netdev_queue
*txq
;
646 int index
= mwifiex_1d_to_wmm_queue
[skb
->priority
];
648 if (atomic_inc_return(&priv
->wmm_tx_pending
[index
]) >= MAX_TX_PENDING
) {
649 txq
= netdev_get_tx_queue(priv
->netdev
, index
);
650 if (!netif_tx_queue_stopped(txq
)) {
651 netif_tx_stop_queue(txq
);
652 dev_dbg(priv
->adapter
->dev
, "stop queue: %d\n", index
);
656 atomic_inc(&priv
->adapter
->tx_pending
);
657 mwifiex_wmm_add_buf_txqueue(priv
, skb
);
659 mwifiex_queue_main_work(priv
->adapter
);
665 mwifiex_clone_skb_for_tx_status(struct mwifiex_private
*priv
,
666 struct sk_buff
*skb
, u8 flag
, u64
*cookie
)
668 struct sk_buff
*orig_skb
= skb
;
669 struct mwifiex_txinfo
*tx_info
, *orig_tx_info
;
671 skb
= skb_clone(skb
, GFP_ATOMIC
);
676 spin_lock_irqsave(&priv
->ack_status_lock
, flags
);
677 id
= idr_alloc(&priv
->ack_status_frames
, orig_skb
,
678 1, 0xff, GFP_ATOMIC
);
679 spin_unlock_irqrestore(&priv
->ack_status_lock
, flags
);
682 tx_info
= MWIFIEX_SKB_TXCB(skb
);
683 tx_info
->ack_frame_id
= id
;
684 tx_info
->flags
|= flag
;
685 orig_tx_info
= MWIFIEX_SKB_TXCB(orig_skb
);
686 orig_tx_info
->ack_frame_id
= id
;
687 orig_tx_info
->flags
|= flag
;
689 if (flag
== MWIFIEX_BUF_FLAG_ACTION_TX_STATUS
&& cookie
)
690 orig_tx_info
->cookie
= *cookie
;
692 } else if (skb_shared(skb
)) {
699 /* couldn't clone -- lose tx status ... */
707 * CFG802.11 network device handler for data transmission.
710 mwifiex_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
712 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
713 struct sk_buff
*new_skb
;
714 struct mwifiex_txinfo
*tx_info
;
717 dev_dbg(priv
->adapter
->dev
, "data: %lu BSS(%d-%d): Data <= kernel\n",
718 jiffies
, priv
->bss_type
, priv
->bss_num
);
720 if (priv
->adapter
->surprise_removed
) {
722 priv
->stats
.tx_dropped
++;
725 if (!skb
->len
|| (skb
->len
> ETH_FRAME_LEN
)) {
726 dev_err(priv
->adapter
->dev
, "Tx: bad skb len %d\n", skb
->len
);
728 priv
->stats
.tx_dropped
++;
731 if (skb_headroom(skb
) < MWIFIEX_MIN_DATA_HEADER_LEN
) {
732 dev_dbg(priv
->adapter
->dev
,
733 "data: Tx: insufficient skb headroom %d\n",
735 /* Insufficient skb headroom - allocate a new skb */
737 skb_realloc_headroom(skb
, MWIFIEX_MIN_DATA_HEADER_LEN
);
738 if (unlikely(!new_skb
)) {
739 dev_err(priv
->adapter
->dev
, "Tx: cannot alloca new_skb\n");
741 priv
->stats
.tx_dropped
++;
746 dev_dbg(priv
->adapter
->dev
, "info: new skb headroomd %d\n",
750 tx_info
= MWIFIEX_SKB_TXCB(skb
);
751 memset(tx_info
, 0, sizeof(*tx_info
));
752 tx_info
->bss_num
= priv
->bss_num
;
753 tx_info
->bss_type
= priv
->bss_type
;
754 tx_info
->pkt_len
= skb
->len
;
756 multicast
= is_multicast_ether_addr(skb
->data
);
758 if (unlikely(!multicast
&& skb
->sk
&&
759 skb_shinfo(skb
)->tx_flags
& SKBTX_WIFI_STATUS
&&
760 priv
->adapter
->fw_api_ver
== MWIFIEX_FW_V15
))
761 skb
= mwifiex_clone_skb_for_tx_status(priv
,
763 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS
, NULL
);
765 /* Record the current time the packet was queued; used to
766 * determine the amount of time the packet was queued in
767 * the driver before it was sent to the firmware.
768 * The delay is then sent along with the packet to the
769 * firmware for aggregate delay calculation for stats and
770 * MSDU lifetime expiry.
772 __net_timestamp(skb
);
774 if (ISSUPP_TDLS_ENABLED(priv
->adapter
->fw_cap_info
) &&
775 priv
->bss_type
== MWIFIEX_BSS_TYPE_STA
&&
776 !ether_addr_equal_unaligned(priv
->cfg_bssid
, skb
->data
)) {
777 if (priv
->adapter
->auto_tdls
&& priv
->check_tdls_tx
)
778 mwifiex_tdls_check_tx(priv
, skb
);
781 mwifiex_queue_tx_pkt(priv
, skb
);
787 * CFG802.11 network device handler for setting MAC address.
790 mwifiex_set_mac_address(struct net_device
*dev
, void *addr
)
792 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
793 struct sockaddr
*hw_addr
= addr
;
796 memcpy(priv
->curr_addr
, hw_addr
->sa_data
, ETH_ALEN
);
798 /* Send request to firmware */
799 ret
= mwifiex_send_cmd(priv
, HostCmd_CMD_802_11_MAC_ADDRESS
,
800 HostCmd_ACT_GEN_SET
, 0, NULL
, true);
803 memcpy(priv
->netdev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
805 dev_err(priv
->adapter
->dev
,
806 "set mac address failed: ret=%d\n", ret
);
808 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
814 * CFG802.11 network device handler for setting multicast list.
816 static void mwifiex_set_multicast_list(struct net_device
*dev
)
818 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
819 struct mwifiex_multicast_list mcast_list
;
821 if (dev
->flags
& IFF_PROMISC
) {
822 mcast_list
.mode
= MWIFIEX_PROMISC_MODE
;
823 } else if (dev
->flags
& IFF_ALLMULTI
||
824 netdev_mc_count(dev
) > MWIFIEX_MAX_MULTICAST_LIST_SIZE
) {
825 mcast_list
.mode
= MWIFIEX_ALL_MULTI_MODE
;
827 mcast_list
.mode
= MWIFIEX_MULTICAST_MODE
;
828 mcast_list
.num_multicast_addr
=
829 mwifiex_copy_mcast_addr(&mcast_list
, dev
);
831 mwifiex_request_set_multicast_list(priv
, &mcast_list
);
835 * CFG802.11 network device handler for transmission timeout.
838 mwifiex_tx_timeout(struct net_device
*dev
)
840 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
842 priv
->num_tx_timeout
++;
843 priv
->tx_timeout_cnt
++;
844 dev_err(priv
->adapter
->dev
,
845 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
846 jiffies
, priv
->tx_timeout_cnt
, priv
->bss_type
, priv
->bss_num
);
847 mwifiex_set_trans_start(dev
);
849 if (priv
->tx_timeout_cnt
> TX_TIMEOUT_THRESHOLD
&&
850 priv
->adapter
->if_ops
.card_reset
) {
851 dev_err(priv
->adapter
->dev
,
852 "tx_timeout_cnt exceeds threshold. Triggering card reset!\n");
853 priv
->adapter
->if_ops
.card_reset(priv
->adapter
);
857 void mwifiex_dump_drv_info(struct mwifiex_adapter
*adapter
)
860 char drv_version
[64];
861 struct usb_card_rec
*cardp
;
862 struct sdio_mmc_card
*sdio_card
;
863 struct mwifiex_private
*priv
;
865 struct netdev_queue
*txq
;
866 struct mwifiex_debug_info
*debug_info
;
868 if (adapter
->drv_info_dump
) {
869 vfree(adapter
->drv_info_dump
);
870 adapter
->drv_info_size
= 0;
873 dev_info(adapter
->dev
, "=== DRIVER INFO DUMP START===\n");
875 adapter
->drv_info_dump
= vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX
);
877 if (!adapter
->drv_info_dump
)
880 p
= (char *)(adapter
->drv_info_dump
);
881 p
+= sprintf(p
, "driver_name = " "\"mwifiex\"\n");
883 mwifiex_drv_get_driver_version(adapter
, drv_version
,
884 sizeof(drv_version
) - 1);
885 p
+= sprintf(p
, "driver_version = %s\n", drv_version
);
887 if (adapter
->iface_type
== MWIFIEX_USB
) {
888 cardp
= (struct usb_card_rec
*)adapter
->card
;
889 p
+= sprintf(p
, "tx_cmd_urb_pending = %d\n",
890 atomic_read(&cardp
->tx_cmd_urb_pending
));
891 p
+= sprintf(p
, "tx_data_urb_pending = %d\n",
892 atomic_read(&cardp
->tx_data_urb_pending
));
893 p
+= sprintf(p
, "rx_cmd_urb_pending = %d\n",
894 atomic_read(&cardp
->rx_cmd_urb_pending
));
895 p
+= sprintf(p
, "rx_data_urb_pending = %d\n",
896 atomic_read(&cardp
->rx_data_urb_pending
));
899 p
+= sprintf(p
, "tx_pending = %d\n",
900 atomic_read(&adapter
->tx_pending
));
901 p
+= sprintf(p
, "rx_pending = %d\n",
902 atomic_read(&adapter
->rx_pending
));
904 if (adapter
->iface_type
== MWIFIEX_SDIO
) {
905 sdio_card
= (struct sdio_mmc_card
*)adapter
->card
;
906 p
+= sprintf(p
, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
907 sdio_card
->mp_rd_bitmap
, sdio_card
->curr_rd_port
);
908 p
+= sprintf(p
, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
909 sdio_card
->mp_wr_bitmap
, sdio_card
->curr_wr_port
);
912 for (i
= 0; i
< adapter
->priv_num
; i
++) {
913 if (!adapter
->priv
[i
] || !adapter
->priv
[i
]->netdev
)
915 priv
= adapter
->priv
[i
];
916 p
+= sprintf(p
, "\n[interface : \"%s\"]\n",
918 p
+= sprintf(p
, "wmm_tx_pending[0] = %d\n",
919 atomic_read(&priv
->wmm_tx_pending
[0]));
920 p
+= sprintf(p
, "wmm_tx_pending[1] = %d\n",
921 atomic_read(&priv
->wmm_tx_pending
[1]));
922 p
+= sprintf(p
, "wmm_tx_pending[2] = %d\n",
923 atomic_read(&priv
->wmm_tx_pending
[2]));
924 p
+= sprintf(p
, "wmm_tx_pending[3] = %d\n",
925 atomic_read(&priv
->wmm_tx_pending
[3]));
926 p
+= sprintf(p
, "media_state=\"%s\"\n", !priv
->media_connected
?
927 "Disconnected" : "Connected");
928 p
+= sprintf(p
, "carrier %s\n", (netif_carrier_ok(priv
->netdev
)
930 for (idx
= 0; idx
< priv
->netdev
->num_tx_queues
; idx
++) {
931 txq
= netdev_get_tx_queue(priv
->netdev
, idx
);
932 p
+= sprintf(p
, "tx queue %d:%s ", idx
,
933 netif_tx_queue_stopped(txq
) ?
934 "stopped" : "started");
936 p
+= sprintf(p
, "\n%s: num_tx_timeout = %d\n",
937 priv
->netdev
->name
, priv
->num_tx_timeout
);
940 if (adapter
->iface_type
== MWIFIEX_SDIO
) {
941 p
+= sprintf(p
, "\n=== SDIO register DUMP===\n");
942 if (adapter
->if_ops
.reg_dump
)
943 p
+= adapter
->if_ops
.reg_dump(adapter
, p
);
946 p
+= sprintf(p
, "\n=== MORE DEBUG INFORMATION\n");
947 debug_info
= kzalloc(sizeof(*debug_info
), GFP_KERNEL
);
949 for (i
= 0; i
< adapter
->priv_num
; i
++) {
950 if (!adapter
->priv
[i
] || !adapter
->priv
[i
]->netdev
)
952 priv
= adapter
->priv
[i
];
953 mwifiex_get_debug_info(priv
, debug_info
);
954 p
+= mwifiex_debug_info_to_buffer(priv
, p
, debug_info
);
960 adapter
->drv_info_size
= p
- adapter
->drv_info_dump
;
961 dev_info(adapter
->dev
, "=== DRIVER INFO DUMP END===\n");
963 EXPORT_SYMBOL_GPL(mwifiex_dump_drv_info
);
966 * CFG802.11 network device handler for statistics retrieval.
968 static struct net_device_stats
*mwifiex_get_stats(struct net_device
*dev
)
970 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
976 mwifiex_netdev_select_wmm_queue(struct net_device
*dev
, struct sk_buff
*skb
,
977 void *accel_priv
, select_queue_fallback_t fallback
)
979 skb
->priority
= cfg80211_classify8021d(skb
, NULL
);
980 return mwifiex_1d_to_wmm_queue
[skb
->priority
];
983 /* Network device handlers */
984 static const struct net_device_ops mwifiex_netdev_ops
= {
985 .ndo_open
= mwifiex_open
,
986 .ndo_stop
= mwifiex_close
,
987 .ndo_start_xmit
= mwifiex_hard_start_xmit
,
988 .ndo_set_mac_address
= mwifiex_set_mac_address
,
989 .ndo_tx_timeout
= mwifiex_tx_timeout
,
990 .ndo_get_stats
= mwifiex_get_stats
,
991 .ndo_set_rx_mode
= mwifiex_set_multicast_list
,
992 .ndo_select_queue
= mwifiex_netdev_select_wmm_queue
,
996 * This function initializes the private structure parameters.
998 * The following wait queues are initialized -
1000 * - Command wait queue
1001 * - Statistics wait queue
1003 * ...and the following default parameters are set -
1004 * - Current key index : Set to 0
1005 * - Rate index : Set to auto
1006 * - Media connected : Set to disconnected
1007 * - Adhoc link sensed : Set to false
1008 * - Nick name : Set to null
1009 * - Number of Tx timeout : Set to 0
1010 * - Device address : Set to current address
1011 * - Rx histogram statistc : Set to 0
1013 * In addition, the CFG80211 work queue is also created.
1015 void mwifiex_init_priv_params(struct mwifiex_private
*priv
,
1016 struct net_device
*dev
)
1018 dev
->netdev_ops
= &mwifiex_netdev_ops
;
1019 dev
->destructor
= free_netdev
;
1020 /* Initialize private structure */
1021 priv
->current_key_index
= 0;
1022 priv
->media_connected
= false;
1023 memset(priv
->mgmt_ie
, 0,
1024 sizeof(struct mwifiex_ie
) * MAX_MGMT_IE_INDEX
);
1025 priv
->beacon_idx
= MWIFIEX_AUTO_IDX_MASK
;
1026 priv
->proberesp_idx
= MWIFIEX_AUTO_IDX_MASK
;
1027 priv
->assocresp_idx
= MWIFIEX_AUTO_IDX_MASK
;
1028 priv
->gen_idx
= MWIFIEX_AUTO_IDX_MASK
;
1029 priv
->num_tx_timeout
= 0;
1030 ether_addr_copy(priv
->curr_addr
, priv
->adapter
->perm_addr
);
1031 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
1033 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
||
1034 GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_UAP
) {
1035 priv
->hist_data
= kmalloc(sizeof(*priv
->hist_data
), GFP_KERNEL
);
1036 if (priv
->hist_data
)
1037 mwifiex_hist_data_reset(priv
);
1042 * This function check if command is pending.
1044 int is_command_pending(struct mwifiex_adapter
*adapter
)
1046 unsigned long flags
;
1047 int is_cmd_pend_q_empty
;
1049 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, flags
);
1050 is_cmd_pend_q_empty
= list_empty(&adapter
->cmd_pending_q
);
1051 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, flags
);
1053 return !is_cmd_pend_q_empty
;
1057 * This is the RX work queue function.
1059 * It handles the RX operations.
1061 static void mwifiex_rx_work_queue(struct work_struct
*work
)
1063 struct mwifiex_adapter
*adapter
=
1064 container_of(work
, struct mwifiex_adapter
, rx_work
);
1066 if (adapter
->surprise_removed
)
1068 mwifiex_process_rx(adapter
);
1072 * This is the main work queue function.
1074 * It handles the main process, which in turn handles the complete
1075 * driver operations.
1077 static void mwifiex_main_work_queue(struct work_struct
*work
)
1079 struct mwifiex_adapter
*adapter
=
1080 container_of(work
, struct mwifiex_adapter
, main_work
);
1082 if (adapter
->surprise_removed
)
1084 mwifiex_main_process(adapter
);
1088 * This function adds the card.
1090 * This function follows the following major steps to set up the device -
1091 * - Initialize software. This includes probing the card, registering
1092 * the interface operations table, and allocating/initializing the
1094 * - Set up the netlink socket
1095 * - Create and start the main work queue
1096 * - Register the device
1097 * - Initialize firmware and hardware
1098 * - Add logical interfaces
1101 mwifiex_add_card(void *card
, struct semaphore
*sem
,
1102 struct mwifiex_if_ops
*if_ops
, u8 iface_type
)
1104 struct mwifiex_adapter
*adapter
;
1106 if (down_interruptible(sem
))
1109 if (mwifiex_register(card
, if_ops
, (void **)&adapter
)) {
1110 pr_err("%s: software init failed\n", __func__
);
1114 adapter
->iface_type
= iface_type
;
1115 adapter
->card_sem
= sem
;
1117 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
1118 adapter
->surprise_removed
= false;
1119 init_waitqueue_head(&adapter
->init_wait_q
);
1120 adapter
->is_suspended
= false;
1121 adapter
->hs_activated
= false;
1122 init_waitqueue_head(&adapter
->hs_activate_wait_q
);
1123 init_waitqueue_head(&adapter
->cmd_wait_q
.wait
);
1124 adapter
->cmd_wait_q
.status
= 0;
1125 adapter
->scan_wait_q_woken
= false;
1127 if ((num_possible_cpus() > 1) || adapter
->iface_type
== MWIFIEX_USB
) {
1128 adapter
->rx_work_enabled
= true;
1129 pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
1132 adapter
->workqueue
=
1133 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1134 WQ_HIGHPRI
| WQ_MEM_RECLAIM
| WQ_UNBOUND
, 1);
1135 if (!adapter
->workqueue
)
1138 INIT_WORK(&adapter
->main_work
, mwifiex_main_work_queue
);
1140 if (adapter
->rx_work_enabled
) {
1141 adapter
->rx_workqueue
= alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1145 if (!adapter
->rx_workqueue
)
1148 INIT_WORK(&adapter
->rx_work
, mwifiex_rx_work_queue
);
1151 /* Register the device. Fill up the private data structure with relevant
1152 information from the card. */
1153 if (adapter
->if_ops
.register_dev(adapter
)) {
1154 pr_err("%s: failed to register mwifiex device\n", __func__
);
1155 goto err_registerdev
;
1158 if (mwifiex_init_hw_fw(adapter
)) {
1159 pr_err("%s: firmware init failed\n", __func__
);
1166 pr_debug("info: %s: unregister device\n", __func__
);
1167 if (adapter
->if_ops
.unregister_dev
)
1168 adapter
->if_ops
.unregister_dev(adapter
);
1169 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
) {
1170 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
1171 adapter
->init_wait_q_woken
= false;
1173 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
1174 wait_event_interruptible(adapter
->init_wait_q
,
1175 adapter
->init_wait_q_woken
);
1178 adapter
->surprise_removed
= true;
1179 mwifiex_terminate_workqueue(adapter
);
1181 mwifiex_free_adapter(adapter
);
1189 EXPORT_SYMBOL_GPL(mwifiex_add_card
);
1192 * This function removes the card.
1194 * This function follows the following major steps to remove the device -
1195 * - Stop data traffic
1196 * - Shutdown firmware
1197 * - Remove the logical interfaces
1198 * - Terminate the work queue
1199 * - Unregister the device
1200 * - Free the adapter structure
1202 int mwifiex_remove_card(struct mwifiex_adapter
*adapter
, struct semaphore
*sem
)
1204 struct mwifiex_private
*priv
= NULL
;
1207 if (down_interruptible(sem
))
1213 /* We can no longer handle interrupts once we start doing the teardown
1215 if (adapter
->if_ops
.disable_int
)
1216 adapter
->if_ops
.disable_int(adapter
);
1218 adapter
->surprise_removed
= true;
1220 mwifiex_terminate_workqueue(adapter
);
1223 for (i
= 0; i
< adapter
->priv_num
; i
++) {
1224 priv
= adapter
->priv
[i
];
1225 if (priv
&& priv
->netdev
) {
1226 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
1227 if (netif_carrier_ok(priv
->netdev
))
1228 netif_carrier_off(priv
->netdev
);
1232 dev_dbg(adapter
->dev
, "cmd: calling mwifiex_shutdown_drv...\n");
1233 adapter
->init_wait_q_woken
= false;
1235 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
1236 wait_event_interruptible(adapter
->init_wait_q
,
1237 adapter
->init_wait_q_woken
);
1238 dev_dbg(adapter
->dev
, "cmd: mwifiex_shutdown_drv done\n");
1239 if (atomic_read(&adapter
->rx_pending
) ||
1240 atomic_read(&adapter
->tx_pending
) ||
1241 atomic_read(&adapter
->cmd_pending
)) {
1242 dev_err(adapter
->dev
, "rx_pending=%d, tx_pending=%d, "
1244 atomic_read(&adapter
->rx_pending
),
1245 atomic_read(&adapter
->tx_pending
),
1246 atomic_read(&adapter
->cmd_pending
));
1249 for (i
= 0; i
< adapter
->priv_num
; i
++) {
1250 priv
= adapter
->priv
[i
];
1257 priv
->wdev
.iftype
!= NL80211_IFTYPE_UNSPECIFIED
)
1258 mwifiex_del_virtual_intf(adapter
->wiphy
, &priv
->wdev
);
1262 wiphy_unregister(adapter
->wiphy
);
1263 wiphy_free(adapter
->wiphy
);
1265 /* Unregister device */
1266 dev_dbg(adapter
->dev
, "info: unregister device\n");
1267 if (adapter
->if_ops
.unregister_dev
)
1268 adapter
->if_ops
.unregister_dev(adapter
);
1269 /* Free adapter structure */
1270 dev_dbg(adapter
->dev
, "info: free adapter\n");
1271 mwifiex_free_adapter(adapter
);
1278 EXPORT_SYMBOL_GPL(mwifiex_remove_card
);
1281 * This function initializes the module.
1283 * The debug FS is also initialized if configured.
1286 mwifiex_init_module(void)
1288 #ifdef CONFIG_DEBUG_FS
1289 mwifiex_debugfs_init();
1295 * This function cleans up the module.
1297 * The debug FS is removed if available.
1300 mwifiex_cleanup_module(void)
1302 #ifdef CONFIG_DEBUG_FS
1303 mwifiex_debugfs_remove();
1307 module_init(mwifiex_init_module
);
1308 module_exit(mwifiex_cleanup_module
);
1310 MODULE_AUTHOR("Marvell International Ltd.");
1311 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION
);
1312 MODULE_VERSION(VERSION
);
1313 MODULE_LICENSE("GPL v2");