2 * Copyright (c) 2004-2011 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 struct ath6kl_sta
*ath6kl_find_sta(struct ath6kl
*ar
, u8
*node_addr
)
25 /* TODO: Findout vif */
26 struct ath6kl_vif
*vif
= ar
->vif
;
27 struct ath6kl_sta
*conn
= NULL
;
30 max_conn
= (vif
->nw_type
== AP_NETWORK
) ? AP_MAX_NUM_STA
: 0;
32 for (i
= 0; i
< max_conn
; i
++) {
33 if (memcmp(node_addr
, ar
->sta_list
[i
].mac
, ETH_ALEN
) == 0) {
34 conn
= &ar
->sta_list
[i
];
42 struct ath6kl_sta
*ath6kl_find_sta_by_aid(struct ath6kl
*ar
, u8 aid
)
44 struct ath6kl_sta
*conn
= NULL
;
47 for (ctr
= 0; ctr
< AP_MAX_NUM_STA
; ctr
++) {
48 if (ar
->sta_list
[ctr
].aid
== aid
) {
49 conn
= &ar
->sta_list
[ctr
];
56 static void ath6kl_add_new_sta(struct ath6kl
*ar
, u8
*mac
, u16 aid
, u8
*wpaie
,
57 u8 ielen
, u8 keymgmt
, u8 ucipher
, u8 auth
)
59 struct ath6kl_sta
*sta
;
64 sta
= &ar
->sta_list
[free_slot
];
65 memcpy(sta
->mac
, mac
, ETH_ALEN
);
66 if (ielen
<= ATH6KL_MAX_IE
)
67 memcpy(sta
->wpa_ie
, wpaie
, ielen
);
69 sta
->keymgmt
= keymgmt
;
70 sta
->ucipher
= ucipher
;
73 ar
->sta_list_index
= ar
->sta_list_index
| (1 << free_slot
);
74 ar
->ap_stats
.sta
[free_slot
].aid
= cpu_to_le32(aid
);
77 static void ath6kl_sta_cleanup(struct ath6kl
*ar
, u8 i
)
79 struct ath6kl_sta
*sta
= &ar
->sta_list
[i
];
81 /* empty the queued pkts in the PS queue if any */
82 spin_lock_bh(&sta
->psq_lock
);
83 skb_queue_purge(&sta
->psq
);
84 spin_unlock_bh(&sta
->psq_lock
);
86 memset(&ar
->ap_stats
.sta
[sta
->aid
- 1], 0,
87 sizeof(struct wmi_per_sta_stat
));
88 memset(sta
->mac
, 0, ETH_ALEN
);
89 memset(sta
->wpa_ie
, 0, ATH6KL_MAX_IE
);
93 ar
->sta_list_index
= ar
->sta_list_index
& ~(1 << i
);
97 static u8
ath6kl_remove_sta(struct ath6kl
*ar
, u8
*mac
, u16 reason
)
101 if (is_zero_ether_addr(mac
))
104 if (is_broadcast_ether_addr(mac
)) {
105 ath6kl_dbg(ATH6KL_DBG_TRC
, "deleting all station\n");
107 for (i
= 0; i
< AP_MAX_NUM_STA
; i
++) {
108 if (!is_zero_ether_addr(ar
->sta_list
[i
].mac
)) {
109 ath6kl_sta_cleanup(ar
, i
);
114 for (i
= 0; i
< AP_MAX_NUM_STA
; i
++) {
115 if (memcmp(ar
->sta_list
[i
].mac
, mac
, ETH_ALEN
) == 0) {
116 ath6kl_dbg(ATH6KL_DBG_TRC
,
117 "deleting station %pM aid=%d reason=%d\n",
118 mac
, ar
->sta_list
[i
].aid
, reason
);
119 ath6kl_sta_cleanup(ar
, i
);
129 enum htc_endpoint_id
ath6kl_ac2_endpoint_id(void *devt
, u8 ac
)
131 struct ath6kl
*ar
= devt
;
132 return ar
->ac2ep_map
[ac
];
135 struct ath6kl_cookie
*ath6kl_alloc_cookie(struct ath6kl
*ar
)
137 struct ath6kl_cookie
*cookie
;
139 cookie
= ar
->cookie_list
;
140 if (cookie
!= NULL
) {
141 ar
->cookie_list
= cookie
->arc_list_next
;
148 void ath6kl_cookie_init(struct ath6kl
*ar
)
152 ar
->cookie_list
= NULL
;
153 ar
->cookie_count
= 0;
155 memset(ar
->cookie_mem
, 0, sizeof(ar
->cookie_mem
));
157 for (i
= 0; i
< MAX_COOKIE_NUM
; i
++)
158 ath6kl_free_cookie(ar
, &ar
->cookie_mem
[i
]);
161 void ath6kl_cookie_cleanup(struct ath6kl
*ar
)
163 ar
->cookie_list
= NULL
;
164 ar
->cookie_count
= 0;
167 void ath6kl_free_cookie(struct ath6kl
*ar
, struct ath6kl_cookie
*cookie
)
174 cookie
->arc_list_next
= ar
->cookie_list
;
175 ar
->cookie_list
= cookie
;
179 /* set the window address register (using 4-byte register access ). */
180 static int ath6kl_set_addrwin_reg(struct ath6kl
*ar
, u32 reg_addr
, u32 addr
)
187 * Write bytes 1,2,3 of the register to set the upper address bytes,
188 * the LSB is written last to initiate the access cycle
191 for (i
= 1; i
<= 3; i
++) {
193 * Fill the buffer with the address byte value we want to
194 * hit 4 times. No need to worry about endianness as the
195 * same byte is copied to all four bytes of addr_val at
198 memset((u8
*)&addr_val
, ((u8
*)&addr
)[i
], 4);
201 * Hit each byte of the register address with a 4-byte
202 * write operation to the same address, this is a harmless
205 status
= hif_read_write_sync(ar
, reg_addr
+ i
, (u8
*)&addr_val
,
206 4, HIF_WR_SYNC_BYTE_FIX
);
212 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n",
218 * Write the address register again, this time write the whole
219 * 4-byte value. The effect here is that the LSB write causes the
220 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no
221 * effect since we are writing the same values again
223 addr_val
= cpu_to_le32(addr
);
224 status
= hif_read_write_sync(ar
, reg_addr
,
226 4, HIF_WR_SYNC_BYTE_INC
);
229 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n",
238 * Read from the hardware through its diagnostic window. No cooperation
239 * from the firmware is required for this.
241 int ath6kl_diag_read32(struct ath6kl
*ar
, u32 address
, u32
*value
)
245 /* set window register to start read cycle */
246 ret
= ath6kl_set_addrwin_reg(ar
, WINDOW_READ_ADDR_ADDRESS
, address
);
251 ret
= hif_read_write_sync(ar
, WINDOW_DATA_ADDRESS
, (u8
*) value
,
252 sizeof(*value
), HIF_RD_SYNC_BYTE_INC
);
254 ath6kl_warn("failed to read32 through diagnose window: %d\n",
263 * Write to the ATH6KL through its diagnostic window. No cooperation from
264 * the Target is required for this.
266 int ath6kl_diag_write32(struct ath6kl
*ar
, u32 address
, __le32 value
)
271 ret
= hif_read_write_sync(ar
, WINDOW_DATA_ADDRESS
, (u8
*) &value
,
272 sizeof(value
), HIF_WR_SYNC_BYTE_INC
);
274 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n",
279 /* set window register, which starts the write cycle */
280 return ath6kl_set_addrwin_reg(ar
, WINDOW_WRITE_ADDR_ADDRESS
,
284 int ath6kl_diag_read(struct ath6kl
*ar
, u32 address
, void *data
, u32 length
)
286 u32 count
, *buf
= data
;
289 if (WARN_ON(length
% 4))
292 for (count
= 0; count
< length
/ 4; count
++, address
+= 4) {
293 ret
= ath6kl_diag_read32(ar
, address
, &buf
[count
]);
301 int ath6kl_diag_write(struct ath6kl
*ar
, u32 address
, void *data
, u32 length
)
307 if (WARN_ON(length
% 4))
310 for (count
= 0; count
< length
/ 4; count
++, address
+= 4) {
311 ret
= ath6kl_diag_write32(ar
, address
, buf
[count
]);
319 int ath6kl_read_fwlogs(struct ath6kl
*ar
)
321 struct ath6kl_dbglog_hdr debug_hdr
;
322 struct ath6kl_dbglog_buf debug_buf
;
323 u32 address
, length
, dropped
, firstbuf
, debug_hdr_addr
;
327 buf
= kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE
, GFP_KERNEL
);
331 address
= TARG_VTOP(ar
->target_type
,
332 ath6kl_get_hi_item_addr(ar
,
333 HI_ITEM(hi_dbglog_hdr
)));
335 ret
= ath6kl_diag_read32(ar
, address
, &debug_hdr_addr
);
339 /* Get the contents of the ring buffer */
340 if (debug_hdr_addr
== 0) {
341 ath6kl_warn("Invalid address for debug_hdr_addr\n");
346 address
= TARG_VTOP(ar
->target_type
, debug_hdr_addr
);
347 ath6kl_diag_read(ar
, address
, &debug_hdr
, sizeof(debug_hdr
));
349 address
= TARG_VTOP(ar
->target_type
,
350 le32_to_cpu(debug_hdr
.dbuf_addr
));
352 dropped
= le32_to_cpu(debug_hdr
.dropped
);
353 ath6kl_diag_read(ar
, address
, &debug_buf
, sizeof(debug_buf
));
358 address
= TARG_VTOP(ar
->target_type
,
359 le32_to_cpu(debug_buf
.buffer_addr
));
360 length
= le32_to_cpu(debug_buf
.length
);
362 if (length
!= 0 && (le32_to_cpu(debug_buf
.length
) <=
363 le32_to_cpu(debug_buf
.bufsize
))) {
364 length
= ALIGN(length
, 4);
366 ret
= ath6kl_diag_read(ar
, address
,
371 ath6kl_debug_fwlog_event(ar
, buf
, length
);
374 address
= TARG_VTOP(ar
->target_type
,
375 le32_to_cpu(debug_buf
.next
));
376 ath6kl_diag_read(ar
, address
, &debug_buf
, sizeof(debug_buf
));
382 if (WARN_ON(loop
== 0)) {
386 } while (address
!= firstbuf
);
394 /* FIXME: move to a better place, target.h? */
395 #define AR6003_RESET_CONTROL_ADDRESS 0x00004000
396 #define AR6004_RESET_CONTROL_ADDRESS 0x00004000
398 static void ath6kl_reset_device(struct ath6kl
*ar
, u32 target_type
,
399 bool wait_fot_compltn
, bool cold_reset
)
405 if (target_type
!= TARGET_TYPE_AR6003
&&
406 target_type
!= TARGET_TYPE_AR6004
)
409 data
= cold_reset
? cpu_to_le32(RESET_CONTROL_COLD_RST
) :
410 cpu_to_le32(RESET_CONTROL_MBOX_RST
);
412 switch (target_type
) {
413 case TARGET_TYPE_AR6003
:
414 address
= AR6003_RESET_CONTROL_ADDRESS
;
416 case TARGET_TYPE_AR6004
:
417 address
= AR6004_RESET_CONTROL_ADDRESS
;
420 address
= AR6003_RESET_CONTROL_ADDRESS
;
424 status
= ath6kl_diag_write32(ar
, address
, data
);
427 ath6kl_err("failed to reset target\n");
430 void ath6kl_stop_endpoint(struct net_device
*dev
, bool keep_profile
,
433 struct ath6kl
*ar
= ath6kl_priv(dev
);
434 struct ath6kl_vif
*vif
= netdev_priv(dev
);
435 static u8 bcast_mac
[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
438 netif_stop_queue(dev
);
440 /* disable the target and the interrupts associated with it */
441 if (test_bit(WMI_READY
, &ar
->flag
)) {
442 discon_issued
= (test_bit(CONNECTED
, &vif
->flags
) ||
443 test_bit(CONNECT_PEND
, &vif
->flags
));
444 ath6kl_disconnect(ar
);
446 ath6kl_init_profile_info(ar
);
448 del_timer(&ar
->disconnect_timer
);
450 clear_bit(WMI_READY
, &ar
->flag
);
451 ath6kl_wmi_shutdown(ar
->wmi
);
452 clear_bit(WMI_ENABLED
, &ar
->flag
);
456 * After wmi_shudown all WMI events will be dropped. We
457 * need to cleanup the buffers allocated in AP mode and
458 * give disconnect notification to stack, which usually
459 * happens in the disconnect_event. Simulate the disconnect
460 * event by calling the function directly. Sometimes
461 * disconnect_event will be received when the debug logs
465 ath6kl_disconnect_event(ar
, DISCONNECT_CMD
,
466 (vif
->nw_type
& AP_NETWORK
) ?
467 bcast_mac
: vif
->bssid
,
470 ar
->user_key_ctrl
= 0;
473 ath6kl_dbg(ATH6KL_DBG_TRC
,
474 "%s: wmi is not ready 0x%p 0x%p\n",
475 __func__
, ar
, ar
->wmi
);
477 /* Shut down WMI if we have started it */
478 if (test_bit(WMI_ENABLED
, &ar
->flag
)) {
479 ath6kl_dbg(ATH6KL_DBG_TRC
,
480 "%s: shut down wmi\n", __func__
);
481 ath6kl_wmi_shutdown(ar
->wmi
);
482 clear_bit(WMI_ENABLED
, &ar
->flag
);
487 if (ar
->htc_target
) {
488 ath6kl_dbg(ATH6KL_DBG_TRC
, "%s: shut down htc\n", __func__
);
489 ath6kl_htc_stop(ar
->htc_target
);
493 * Try to reset the device if we can. The driver may have been
494 * configure NOT to reset the target during a debug session.
496 ath6kl_dbg(ATH6KL_DBG_TRC
,
497 "attempting to reset target on instance destroy\n");
498 ath6kl_reset_device(ar
, ar
->target_type
, true, true);
501 static void ath6kl_install_static_wep_keys(struct ath6kl
*ar
)
503 /* TODO: Findout vif */
504 struct ath6kl_vif
*vif
= ar
->vif
;
508 for (index
= WMI_MIN_KEY_INDEX
; index
<= WMI_MAX_KEY_INDEX
; index
++) {
509 if (vif
->wep_key_list
[index
].key_len
) {
510 keyusage
= GROUP_USAGE
;
511 if (index
== vif
->def_txkey_index
)
512 keyusage
|= TX_USAGE
;
514 ath6kl_wmi_addkey_cmd(ar
->wmi
,
518 vif
->wep_key_list
[index
].key_len
,
520 vif
->wep_key_list
[index
].key
,
521 KEY_OP_INIT_VAL
, NULL
,
527 void ath6kl_connect_ap_mode_bss(struct ath6kl
*ar
, u16 channel
)
529 struct ath6kl_req_key
*ik
;
531 u8 key_rsc
[ATH6KL_KEY_SEQ_LEN
];
532 /* TODO: Pass vif instead of taking it from ar */
533 struct ath6kl_vif
*vif
= ar
->vif
;
535 ik
= &ar
->ap_mode_bkey
;
537 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG
, "AP mode started on %u MHz\n", channel
);
539 switch (vif
->auth_mode
) {
541 if (vif
->prwise_crypto
== WEP_CRYPT
)
542 ath6kl_install_static_wep_keys(ar
);
546 case (WPA_PSK_AUTH
| WPA2_PSK_AUTH
):
550 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG
, "Delayed addkey for "
551 "the initial group key for AP mode\n");
552 memset(key_rsc
, 0, sizeof(key_rsc
));
553 res
= ath6kl_wmi_addkey_cmd(
554 ar
->wmi
, ik
->key_index
, ik
->key_type
,
555 GROUP_USAGE
, ik
->key_len
, key_rsc
, ik
->key
,
556 KEY_OP_INIT_VAL
, NULL
, SYNC_BOTH_WMIFLAG
);
558 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG
, "Delayed "
559 "addkey failed: %d\n", res
);
564 ath6kl_wmi_bssfilter_cmd(ar
->wmi
, NONE_BSS_FILTER
, 0);
565 set_bit(CONNECTED
, &vif
->flags
);
566 netif_carrier_on(ar
->net_dev
);
569 void ath6kl_connect_ap_mode_sta(struct ath6kl
*ar
, u16 aid
, u8
*mac_addr
,
570 u8 keymgmt
, u8 ucipher
, u8 auth
,
571 u8 assoc_req_len
, u8
*assoc_info
)
573 u8
*ies
= NULL
, *wpa_ie
= NULL
, *pos
;
575 struct station_info sinfo
;
577 ath6kl_dbg(ATH6KL_DBG_TRC
, "new station %pM aid=%d\n", mac_addr
, aid
);
579 if (assoc_req_len
> sizeof(struct ieee80211_hdr_3addr
)) {
580 struct ieee80211_mgmt
*mgmt
=
581 (struct ieee80211_mgmt
*) assoc_info
;
582 if (ieee80211_is_assoc_req(mgmt
->frame_control
) &&
583 assoc_req_len
>= sizeof(struct ieee80211_hdr_3addr
) +
584 sizeof(mgmt
->u
.assoc_req
)) {
585 ies
= mgmt
->u
.assoc_req
.variable
;
586 ies_len
= assoc_info
+ assoc_req_len
- ies
;
587 } else if (ieee80211_is_reassoc_req(mgmt
->frame_control
) &&
588 assoc_req_len
>= sizeof(struct ieee80211_hdr_3addr
)
589 + sizeof(mgmt
->u
.reassoc_req
)) {
590 ies
= mgmt
->u
.reassoc_req
.variable
;
591 ies_len
= assoc_info
+ assoc_req_len
- ies
;
596 while (pos
&& pos
+ 1 < ies
+ ies_len
) {
597 if (pos
+ 2 + pos
[1] > ies
+ ies_len
)
599 if (pos
[0] == WLAN_EID_RSN
)
600 wpa_ie
= pos
; /* RSN IE */
601 else if (pos
[0] == WLAN_EID_VENDOR_SPECIFIC
&&
603 pos
[2] == 0x00 && pos
[3] == 0x50 && pos
[4] == 0xf2) {
605 wpa_ie
= pos
; /* WPA IE */
606 else if (pos
[5] == 0x04) {
607 wpa_ie
= pos
; /* WPS IE */
608 break; /* overrides WPA/RSN IE */
614 ath6kl_add_new_sta(ar
, mac_addr
, aid
, wpa_ie
,
615 wpa_ie
? 2 + wpa_ie
[1] : 0,
616 keymgmt
, ucipher
, auth
);
618 /* send event to application */
619 memset(&sinfo
, 0, sizeof(sinfo
));
621 /* TODO: sinfo.generation */
623 sinfo
.assoc_req_ies
= ies
;
624 sinfo
.assoc_req_ies_len
= ies_len
;
625 sinfo
.filled
|= STATION_INFO_ASSOC_REQ_IES
;
627 cfg80211_new_sta(ar
->net_dev
, mac_addr
, &sinfo
, GFP_KERNEL
);
629 netif_wake_queue(ar
->net_dev
);
632 /* Functions for Tx credit handling */
633 void ath6k_credit_init(struct htc_credit_state_info
*cred_info
,
634 struct list_head
*ep_list
,
637 struct htc_endpoint_credit_dist
*cur_ep_dist
;
640 cred_info
->cur_free_credits
= tot_credits
;
641 cred_info
->total_avail_credits
= tot_credits
;
643 list_for_each_entry(cur_ep_dist
, ep_list
, list
) {
644 if (cur_ep_dist
->endpoint
== ENDPOINT_0
)
647 cur_ep_dist
->cred_min
= cur_ep_dist
->cred_per_msg
;
650 if ((cur_ep_dist
->svc_id
== WMI_DATA_BK_SVC
) ||
651 (cur_ep_dist
->svc_id
== WMI_DATA_BE_SVC
)) {
652 ath6kl_deposit_credit_to_ep(cred_info
,
654 cur_ep_dist
->cred_min
);
655 cur_ep_dist
->dist_flags
|= HTC_EP_ACTIVE
;
658 if (cur_ep_dist
->svc_id
== WMI_CONTROL_SVC
) {
659 ath6kl_deposit_credit_to_ep(cred_info
, cur_ep_dist
,
660 cur_ep_dist
->cred_min
);
662 * Control service is always marked active, it
663 * never goes inactive EVER.
665 cur_ep_dist
->dist_flags
|= HTC_EP_ACTIVE
;
666 } else if (cur_ep_dist
->svc_id
== WMI_DATA_BK_SVC
)
667 /* this is the lowest priority data endpoint */
668 cred_info
->lowestpri_ep_dist
= cur_ep_dist
->list
;
671 * Streams have to be created (explicit | implicit) for all
672 * kinds of traffic. BE endpoints are also inactive in the
673 * beginning. When BE traffic starts it creates implicit
674 * streams that redistributes credits.
676 * Note: all other endpoints have minimums set but are
677 * initially given NO credits. credits will be distributed
678 * as traffic activity demands
682 WARN_ON(cred_info
->cur_free_credits
<= 0);
684 list_for_each_entry(cur_ep_dist
, ep_list
, list
) {
685 if (cur_ep_dist
->endpoint
== ENDPOINT_0
)
688 if (cur_ep_dist
->svc_id
== WMI_CONTROL_SVC
)
689 cur_ep_dist
->cred_norm
= cur_ep_dist
->cred_per_msg
;
692 * For the remaining data endpoints, we assume that
693 * each cred_per_msg are the same. We use a simple
694 * calculation here, we take the remaining credits
695 * and determine how many max messages this can
696 * cover and then set each endpoint's normal value
697 * equal to 3/4 this amount.
699 count
= (cred_info
->cur_free_credits
/
700 cur_ep_dist
->cred_per_msg
)
701 * cur_ep_dist
->cred_per_msg
;
702 count
= (count
* 3) >> 2;
703 count
= max(count
, cur_ep_dist
->cred_per_msg
);
704 cur_ep_dist
->cred_norm
= count
;
710 /* initialize and setup credit distribution */
711 int ath6k_setup_credit_dist(void *htc_handle
,
712 struct htc_credit_state_info
*cred_info
)
714 u16 servicepriority
[5];
716 memset(cred_info
, 0, sizeof(struct htc_credit_state_info
));
718 servicepriority
[0] = WMI_CONTROL_SVC
; /* highest */
719 servicepriority
[1] = WMI_DATA_VO_SVC
;
720 servicepriority
[2] = WMI_DATA_VI_SVC
;
721 servicepriority
[3] = WMI_DATA_BE_SVC
;
722 servicepriority
[4] = WMI_DATA_BK_SVC
; /* lowest */
724 /* set priority list */
725 ath6kl_htc_set_credit_dist(htc_handle
, cred_info
, servicepriority
, 5);
730 /* reduce an ep's credits back to a set limit */
731 static void ath6k_reduce_credits(struct htc_credit_state_info
*cred_info
,
732 struct htc_endpoint_credit_dist
*ep_dist
,
737 ep_dist
->cred_assngd
= limit
;
739 if (ep_dist
->credits
<= limit
)
742 credits
= ep_dist
->credits
- limit
;
743 ep_dist
->credits
-= credits
;
744 cred_info
->cur_free_credits
+= credits
;
747 static void ath6k_credit_update(struct htc_credit_state_info
*cred_info
,
748 struct list_head
*epdist_list
)
750 struct htc_endpoint_credit_dist
*cur_dist_list
;
752 list_for_each_entry(cur_dist_list
, epdist_list
, list
) {
753 if (cur_dist_list
->endpoint
== ENDPOINT_0
)
756 if (cur_dist_list
->cred_to_dist
> 0) {
757 cur_dist_list
->credits
+=
758 cur_dist_list
->cred_to_dist
;
759 cur_dist_list
->cred_to_dist
= 0;
760 if (cur_dist_list
->credits
>
761 cur_dist_list
->cred_assngd
)
762 ath6k_reduce_credits(cred_info
,
764 cur_dist_list
->cred_assngd
);
766 if (cur_dist_list
->credits
>
767 cur_dist_list
->cred_norm
)
768 ath6k_reduce_credits(cred_info
, cur_dist_list
,
769 cur_dist_list
->cred_norm
);
771 if (!(cur_dist_list
->dist_flags
& HTC_EP_ACTIVE
)) {
772 if (cur_dist_list
->txq_depth
== 0)
773 ath6k_reduce_credits(cred_info
,
781 * HTC has an endpoint that needs credits, ep_dist is the endpoint in
784 void ath6k_seek_credits(struct htc_credit_state_info
*cred_info
,
785 struct htc_endpoint_credit_dist
*ep_dist
)
787 struct htc_endpoint_credit_dist
*curdist_list
;
791 if (ep_dist
->svc_id
== WMI_CONTROL_SVC
)
794 if ((ep_dist
->svc_id
== WMI_DATA_VI_SVC
) ||
795 (ep_dist
->svc_id
== WMI_DATA_VO_SVC
))
796 if ((ep_dist
->cred_assngd
>= ep_dist
->cred_norm
))
800 * For all other services, we follow a simple algorithm of:
802 * 1. checking the free pool for credits
803 * 2. checking lower priority endpoints for credits to take
806 credits
= min(cred_info
->cur_free_credits
, ep_dist
->seek_cred
);
808 if (credits
>= ep_dist
->seek_cred
)
812 * We don't have enough in the free pool, try taking away from
813 * lower priority services The rule for taking away credits:
815 * 1. Only take from lower priority endpoints
816 * 2. Only take what is allocated above the minimum (never
817 * starve an endpoint completely)
818 * 3. Only take what you need.
821 list_for_each_entry_reverse(curdist_list
,
822 &cred_info
->lowestpri_ep_dist
,
824 if (curdist_list
== ep_dist
)
827 need
= ep_dist
->seek_cred
- cred_info
->cur_free_credits
;
829 if ((curdist_list
->cred_assngd
- need
) >=
830 curdist_list
->cred_min
) {
832 * The current one has been allocated more than
833 * it's minimum and it has enough credits assigned
834 * above it's minimum to fulfill our need try to
835 * take away just enough to fulfill our need.
837 ath6k_reduce_credits(cred_info
, curdist_list
,
838 curdist_list
->cred_assngd
- need
);
840 if (cred_info
->cur_free_credits
>=
845 if (curdist_list
->endpoint
== ENDPOINT_0
)
849 credits
= min(cred_info
->cur_free_credits
, ep_dist
->seek_cred
);
852 /* did we find some credits? */
854 ath6kl_deposit_credit_to_ep(cred_info
, ep_dist
, credits
);
856 ep_dist
->seek_cred
= 0;
859 /* redistribute credits based on activity change */
860 static void ath6k_redistribute_credits(struct htc_credit_state_info
*info
,
861 struct list_head
*ep_dist_list
)
863 struct htc_endpoint_credit_dist
*curdist_list
;
865 list_for_each_entry(curdist_list
, ep_dist_list
, list
) {
866 if (curdist_list
->endpoint
== ENDPOINT_0
)
869 if ((curdist_list
->svc_id
== WMI_DATA_BK_SVC
) ||
870 (curdist_list
->svc_id
== WMI_DATA_BE_SVC
))
871 curdist_list
->dist_flags
|= HTC_EP_ACTIVE
;
873 if ((curdist_list
->svc_id
!= WMI_CONTROL_SVC
) &&
874 !(curdist_list
->dist_flags
& HTC_EP_ACTIVE
)) {
875 if (curdist_list
->txq_depth
== 0)
876 ath6k_reduce_credits(info
,
879 ath6k_reduce_credits(info
,
881 curdist_list
->cred_min
);
888 * This function is invoked whenever endpoints require credit
889 * distributions. A lock is held while this function is invoked, this
890 * function shall NOT block. The ep_dist_list is a list of distribution
891 * structures in prioritized order as defined by the call to the
892 * htc_set_credit_dist() api.
894 void ath6k_credit_distribute(struct htc_credit_state_info
*cred_info
,
895 struct list_head
*ep_dist_list
,
896 enum htc_credit_dist_reason reason
)
899 case HTC_CREDIT_DIST_SEND_COMPLETE
:
900 ath6k_credit_update(cred_info
, ep_dist_list
);
902 case HTC_CREDIT_DIST_ACTIVITY_CHANGE
:
903 ath6k_redistribute_credits(cred_info
, ep_dist_list
);
909 WARN_ON(cred_info
->cur_free_credits
> cred_info
->total_avail_credits
);
910 WARN_ON(cred_info
->cur_free_credits
< 0);
913 void disconnect_timer_handler(unsigned long ptr
)
915 struct net_device
*dev
= (struct net_device
*)ptr
;
916 struct ath6kl
*ar
= ath6kl_priv(dev
);
918 ath6kl_init_profile_info(ar
);
919 ath6kl_disconnect(ar
);
922 void ath6kl_disconnect(struct ath6kl
*ar
)
924 /* TODO: Pass vif instead of taking it from ar */
925 struct ath6kl_vif
*vif
= ar
->vif
;
927 if (test_bit(CONNECTED
, &vif
->flags
) ||
928 test_bit(CONNECT_PEND
, &vif
->flags
)) {
929 ath6kl_wmi_disconnect_cmd(ar
->wmi
);
931 * Disconnect command is issued, clear the connect pending
932 * flag. The connected flag will be cleared in
933 * disconnect event notification.
935 clear_bit(CONNECT_PEND
, &vif
->flags
);
939 void ath6kl_deep_sleep_enable(struct ath6kl
*ar
)
941 /* TODO: Pass vif instead of taking it from ar */
942 struct ath6kl_vif
*vif
= ar
->vif
;
944 switch (ar
->sme_state
) {
946 cfg80211_connect_result(ar
->net_dev
, vif
->bssid
, NULL
, 0,
948 WLAN_STATUS_UNSPECIFIED_FAILURE
,
954 * FIXME: oddly enough smeState is in DISCONNECTED during
955 * suspend, why? Need to send disconnected event in that
958 cfg80211_disconnected(ar
->net_dev
, 0, NULL
, 0, GFP_KERNEL
);
962 if (test_bit(CONNECTED
, &vif
->flags
) ||
963 test_bit(CONNECT_PEND
, &vif
->flags
))
964 ath6kl_wmi_disconnect_cmd(ar
->wmi
);
966 ar
->sme_state
= SME_DISCONNECTED
;
968 /* disable scanning */
969 if (ath6kl_wmi_scanparams_cmd(ar
->wmi
, 0xFFFF, 0, 0, 0, 0, 0, 0, 0,
971 printk(KERN_WARNING
"ath6kl: failed to disable scan "
974 ath6kl_cfg80211_scan_complete_event(ar
, -ECANCELED
);
976 /* save the current power mode before enabling power save */
977 ar
->wmi
->saved_pwr_mode
= ar
->wmi
->pwr_mode
;
979 if (ath6kl_wmi_powermode_cmd(ar
->wmi
, REC_POWER
) != 0)
980 ath6kl_warn("ath6kl_deep_sleep_enable: "
981 "wmi_powermode_cmd failed\n");
984 /* WMI Event handlers */
986 static const char *get_hw_id_string(u32 id
)
989 case AR6003_REV1_VERSION
:
991 case AR6003_REV2_VERSION
:
993 case AR6003_REV3_VERSION
:
1000 void ath6kl_ready_event(void *devt
, u8
*datap
, u32 sw_ver
, u32 abi_ver
)
1002 struct ath6kl
*ar
= devt
;
1003 struct net_device
*dev
= ar
->net_dev
;
1005 memcpy(dev
->dev_addr
, datap
, ETH_ALEN
);
1006 ath6kl_dbg(ATH6KL_DBG_TRC
, "%s: mac addr = %pM\n",
1007 __func__
, dev
->dev_addr
);
1009 ar
->version
.wlan_ver
= sw_ver
;
1010 ar
->version
.abi_ver
= abi_ver
;
1012 snprintf(ar
->wiphy
->fw_version
,
1013 sizeof(ar
->wiphy
->fw_version
),
1015 (ar
->version
.wlan_ver
& 0xf0000000) >> 28,
1016 (ar
->version
.wlan_ver
& 0x0f000000) >> 24,
1017 (ar
->version
.wlan_ver
& 0x00ff0000) >> 16,
1018 (ar
->version
.wlan_ver
& 0x0000ffff));
1020 /* indicate to the waiting thread that the ready event was received */
1021 set_bit(WMI_READY
, &ar
->flag
);
1022 wake_up(&ar
->event_wq
);
1024 ath6kl_info("hw %s fw %s%s\n",
1025 get_hw_id_string(ar
->wiphy
->hw_version
),
1026 ar
->wiphy
->fw_version
,
1027 test_bit(TESTMODE
, &ar
->flag
) ? " testmode" : "");
1030 void ath6kl_scan_complete_evt(struct ath6kl
*ar
, int status
)
1032 /* TODO: Pass vif instead of taking it from ar */
1033 struct ath6kl_vif
*vif
= ar
->vif
;
1035 ath6kl_cfg80211_scan_complete_event(ar
, status
);
1037 if (!ar
->usr_bss_filter
) {
1038 clear_bit(CLEAR_BSSFILTER_ON_BEACON
, &vif
->flags
);
1039 ath6kl_wmi_bssfilter_cmd(ar
->wmi
, NONE_BSS_FILTER
, 0);
1042 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN
, "scan complete: %d\n", status
);
1045 void ath6kl_connect_event(struct ath6kl
*ar
, u16 channel
, u8
*bssid
,
1046 u16 listen_int
, u16 beacon_int
,
1047 enum network_type net_type
, u8 beacon_ie_len
,
1048 u8 assoc_req_len
, u8 assoc_resp_len
,
1051 /* TODO: findout vif instead of taking it from ar */
1052 struct ath6kl_vif
*vif
= ar
->vif
;
1054 ath6kl_cfg80211_connect_event(ar
, channel
, bssid
,
1055 listen_int
, beacon_int
,
1056 net_type
, beacon_ie_len
,
1057 assoc_req_len
, assoc_resp_len
,
1060 memcpy(vif
->bssid
, bssid
, sizeof(vif
->bssid
));
1061 vif
->bss_ch
= channel
;
1063 if ((vif
->nw_type
== INFRA_NETWORK
))
1064 ath6kl_wmi_listeninterval_cmd(ar
->wmi
, ar
->listen_intvl_t
,
1065 ar
->listen_intvl_b
);
1067 netif_wake_queue(ar
->net_dev
);
1069 /* Update connect & link status atomically */
1070 spin_lock_bh(&ar
->lock
);
1071 set_bit(CONNECTED
, &vif
->flags
);
1072 clear_bit(CONNECT_PEND
, &vif
->flags
);
1073 netif_carrier_on(ar
->net_dev
);
1074 spin_unlock_bh(&ar
->lock
);
1076 aggr_reset_state(vif
->aggr_cntxt
);
1077 ar
->reconnect_flag
= 0;
1079 if ((vif
->nw_type
== ADHOC_NETWORK
) && ar
->ibss_ps_enable
) {
1080 memset(ar
->node_map
, 0, sizeof(ar
->node_map
));
1082 ar
->next_ep_id
= ENDPOINT_2
;
1085 if (!ar
->usr_bss_filter
) {
1086 set_bit(CLEAR_BSSFILTER_ON_BEACON
, &vif
->flags
);
1087 ath6kl_wmi_bssfilter_cmd(ar
->wmi
, CURRENT_BSS_FILTER
, 0);
1091 void ath6kl_tkip_micerr_event(struct ath6kl
*ar
, u8 keyid
, bool ismcast
)
1093 struct ath6kl_sta
*sta
;
1094 /* TODO: Findout vif */
1095 struct ath6kl_vif
*vif
= ar
->vif
;
1098 * For AP case, keyid will have aid of STA which sent pkt with
1099 * MIC error. Use this aid to get MAC & send it to hostapd.
1101 if (vif
->nw_type
== AP_NETWORK
) {
1102 sta
= ath6kl_find_sta_by_aid(ar
, (keyid
>> 2));
1106 ath6kl_dbg(ATH6KL_DBG_TRC
,
1107 "ap tkip mic error received from aid=%d\n", keyid
);
1109 memset(tsc
, 0, sizeof(tsc
)); /* FIX: get correct TSC */
1110 cfg80211_michael_mic_failure(ar
->net_dev
, sta
->mac
,
1111 NL80211_KEYTYPE_PAIRWISE
, keyid
,
1114 ath6kl_cfg80211_tkip_micerr_event(ar
, keyid
, ismcast
);
1118 static void ath6kl_update_target_stats(struct ath6kl
*ar
, u8
*ptr
, u32 len
)
1120 struct wmi_target_stats
*tgt_stats
=
1121 (struct wmi_target_stats
*) ptr
;
1122 struct target_stats
*stats
= &ar
->target_stats
;
1123 struct tkip_ccmp_stats
*ccmp_stats
;
1126 if (len
< sizeof(*tgt_stats
))
1129 ath6kl_dbg(ATH6KL_DBG_TRC
, "updating target stats\n");
1131 stats
->tx_pkt
+= le32_to_cpu(tgt_stats
->stats
.tx
.pkt
);
1132 stats
->tx_byte
+= le32_to_cpu(tgt_stats
->stats
.tx
.byte
);
1133 stats
->tx_ucast_pkt
+= le32_to_cpu(tgt_stats
->stats
.tx
.ucast_pkt
);
1134 stats
->tx_ucast_byte
+= le32_to_cpu(tgt_stats
->stats
.tx
.ucast_byte
);
1135 stats
->tx_mcast_pkt
+= le32_to_cpu(tgt_stats
->stats
.tx
.mcast_pkt
);
1136 stats
->tx_mcast_byte
+= le32_to_cpu(tgt_stats
->stats
.tx
.mcast_byte
);
1137 stats
->tx_bcast_pkt
+= le32_to_cpu(tgt_stats
->stats
.tx
.bcast_pkt
);
1138 stats
->tx_bcast_byte
+= le32_to_cpu(tgt_stats
->stats
.tx
.bcast_byte
);
1139 stats
->tx_rts_success_cnt
+=
1140 le32_to_cpu(tgt_stats
->stats
.tx
.rts_success_cnt
);
1142 for (ac
= 0; ac
< WMM_NUM_AC
; ac
++)
1143 stats
->tx_pkt_per_ac
[ac
] +=
1144 le32_to_cpu(tgt_stats
->stats
.tx
.pkt_per_ac
[ac
]);
1146 stats
->tx_err
+= le32_to_cpu(tgt_stats
->stats
.tx
.err
);
1147 stats
->tx_fail_cnt
+= le32_to_cpu(tgt_stats
->stats
.tx
.fail_cnt
);
1148 stats
->tx_retry_cnt
+= le32_to_cpu(tgt_stats
->stats
.tx
.retry_cnt
);
1149 stats
->tx_mult_retry_cnt
+=
1150 le32_to_cpu(tgt_stats
->stats
.tx
.mult_retry_cnt
);
1151 stats
->tx_rts_fail_cnt
+=
1152 le32_to_cpu(tgt_stats
->stats
.tx
.rts_fail_cnt
);
1153 stats
->tx_ucast_rate
=
1154 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats
->stats
.tx
.ucast_rate
));
1156 stats
->rx_pkt
+= le32_to_cpu(tgt_stats
->stats
.rx
.pkt
);
1157 stats
->rx_byte
+= le32_to_cpu(tgt_stats
->stats
.rx
.byte
);
1158 stats
->rx_ucast_pkt
+= le32_to_cpu(tgt_stats
->stats
.rx
.ucast_pkt
);
1159 stats
->rx_ucast_byte
+= le32_to_cpu(tgt_stats
->stats
.rx
.ucast_byte
);
1160 stats
->rx_mcast_pkt
+= le32_to_cpu(tgt_stats
->stats
.rx
.mcast_pkt
);
1161 stats
->rx_mcast_byte
+= le32_to_cpu(tgt_stats
->stats
.rx
.mcast_byte
);
1162 stats
->rx_bcast_pkt
+= le32_to_cpu(tgt_stats
->stats
.rx
.bcast_pkt
);
1163 stats
->rx_bcast_byte
+= le32_to_cpu(tgt_stats
->stats
.rx
.bcast_byte
);
1164 stats
->rx_frgment_pkt
+= le32_to_cpu(tgt_stats
->stats
.rx
.frgment_pkt
);
1165 stats
->rx_err
+= le32_to_cpu(tgt_stats
->stats
.rx
.err
);
1166 stats
->rx_crc_err
+= le32_to_cpu(tgt_stats
->stats
.rx
.crc_err
);
1167 stats
->rx_key_cache_miss
+=
1168 le32_to_cpu(tgt_stats
->stats
.rx
.key_cache_miss
);
1169 stats
->rx_decrypt_err
+= le32_to_cpu(tgt_stats
->stats
.rx
.decrypt_err
);
1170 stats
->rx_dupl_frame
+= le32_to_cpu(tgt_stats
->stats
.rx
.dupl_frame
);
1171 stats
->rx_ucast_rate
=
1172 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats
->stats
.rx
.ucast_rate
));
1174 ccmp_stats
= &tgt_stats
->stats
.tkip_ccmp_stats
;
1176 stats
->tkip_local_mic_fail
+=
1177 le32_to_cpu(ccmp_stats
->tkip_local_mic_fail
);
1178 stats
->tkip_cnter_measures_invoked
+=
1179 le32_to_cpu(ccmp_stats
->tkip_cnter_measures_invoked
);
1180 stats
->tkip_fmt_err
+= le32_to_cpu(ccmp_stats
->tkip_fmt_err
);
1182 stats
->ccmp_fmt_err
+= le32_to_cpu(ccmp_stats
->ccmp_fmt_err
);
1183 stats
->ccmp_replays
+= le32_to_cpu(ccmp_stats
->ccmp_replays
);
1185 stats
->pwr_save_fail_cnt
+=
1186 le32_to_cpu(tgt_stats
->pm_stats
.pwr_save_failure_cnt
);
1187 stats
->noise_floor_calib
=
1188 a_sle32_to_cpu(tgt_stats
->noise_floor_calib
);
1190 stats
->cs_bmiss_cnt
+=
1191 le32_to_cpu(tgt_stats
->cserv_stats
.cs_bmiss_cnt
);
1192 stats
->cs_low_rssi_cnt
+=
1193 le32_to_cpu(tgt_stats
->cserv_stats
.cs_low_rssi_cnt
);
1194 stats
->cs_connect_cnt
+=
1195 le16_to_cpu(tgt_stats
->cserv_stats
.cs_connect_cnt
);
1196 stats
->cs_discon_cnt
+=
1197 le16_to_cpu(tgt_stats
->cserv_stats
.cs_discon_cnt
);
1199 stats
->cs_ave_beacon_rssi
=
1200 a_sle16_to_cpu(tgt_stats
->cserv_stats
.cs_ave_beacon_rssi
);
1202 stats
->cs_last_roam_msec
=
1203 tgt_stats
->cserv_stats
.cs_last_roam_msec
;
1204 stats
->cs_snr
= tgt_stats
->cserv_stats
.cs_snr
;
1205 stats
->cs_rssi
= a_sle16_to_cpu(tgt_stats
->cserv_stats
.cs_rssi
);
1207 stats
->lq_val
= le32_to_cpu(tgt_stats
->lq_val
);
1209 stats
->wow_pkt_dropped
+=
1210 le32_to_cpu(tgt_stats
->wow_stats
.wow_pkt_dropped
);
1211 stats
->wow_host_pkt_wakeups
+=
1212 tgt_stats
->wow_stats
.wow_host_pkt_wakeups
;
1213 stats
->wow_host_evt_wakeups
+=
1214 tgt_stats
->wow_stats
.wow_host_evt_wakeups
;
1215 stats
->wow_evt_discarded
+=
1216 le16_to_cpu(tgt_stats
->wow_stats
.wow_evt_discarded
);
1218 if (test_bit(STATS_UPDATE_PEND
, &ar
->flag
)) {
1219 clear_bit(STATS_UPDATE_PEND
, &ar
->flag
);
1220 wake_up(&ar
->event_wq
);
1224 static void ath6kl_add_le32(__le32
*var
, __le32 val
)
1226 *var
= cpu_to_le32(le32_to_cpu(*var
) + le32_to_cpu(val
));
1229 void ath6kl_tgt_stats_event(struct ath6kl
*ar
, u8
*ptr
, u32 len
)
1231 struct wmi_ap_mode_stat
*p
= (struct wmi_ap_mode_stat
*) ptr
;
1232 struct wmi_ap_mode_stat
*ap
= &ar
->ap_stats
;
1233 struct wmi_per_sta_stat
*st_ap
, *st_p
;
1234 /* TODO: Findout vif */
1235 struct ath6kl_vif
*vif
= ar
->vif
;
1238 if (vif
->nw_type
== AP_NETWORK
) {
1239 if (len
< sizeof(*p
))
1242 for (ac
= 0; ac
< AP_MAX_NUM_STA
; ac
++) {
1243 st_ap
= &ap
->sta
[ac
];
1246 ath6kl_add_le32(&st_ap
->tx_bytes
, st_p
->tx_bytes
);
1247 ath6kl_add_le32(&st_ap
->tx_pkts
, st_p
->tx_pkts
);
1248 ath6kl_add_le32(&st_ap
->tx_error
, st_p
->tx_error
);
1249 ath6kl_add_le32(&st_ap
->tx_discard
, st_p
->tx_discard
);
1250 ath6kl_add_le32(&st_ap
->rx_bytes
, st_p
->rx_bytes
);
1251 ath6kl_add_le32(&st_ap
->rx_pkts
, st_p
->rx_pkts
);
1252 ath6kl_add_le32(&st_ap
->rx_error
, st_p
->rx_error
);
1253 ath6kl_add_le32(&st_ap
->rx_discard
, st_p
->rx_discard
);
1257 ath6kl_update_target_stats(ar
, ptr
, len
);
1261 void ath6kl_wakeup_event(void *dev
)
1263 struct ath6kl
*ar
= (struct ath6kl
*) dev
;
1265 wake_up(&ar
->event_wq
);
1268 void ath6kl_txpwr_rx_evt(void *devt
, u8 tx_pwr
)
1270 struct ath6kl
*ar
= (struct ath6kl
*) devt
;
1272 ar
->tx_pwr
= tx_pwr
;
1273 wake_up(&ar
->event_wq
);
1276 void ath6kl_pspoll_event(struct ath6kl
*ar
, u8 aid
)
1278 struct ath6kl_sta
*conn
;
1279 struct sk_buff
*skb
;
1280 bool psq_empty
= false;
1282 conn
= ath6kl_find_sta_by_aid(ar
, aid
);
1287 * Send out a packet queued on ps queue. When the ps queue
1288 * becomes empty update the PVB for this station.
1290 spin_lock_bh(&conn
->psq_lock
);
1291 psq_empty
= skb_queue_empty(&conn
->psq
);
1292 spin_unlock_bh(&conn
->psq_lock
);
1295 /* TODO: Send out a NULL data frame */
1298 spin_lock_bh(&conn
->psq_lock
);
1299 skb
= skb_dequeue(&conn
->psq
);
1300 spin_unlock_bh(&conn
->psq_lock
);
1302 conn
->sta_flags
|= STA_PS_POLLED
;
1303 ath6kl_data_tx(skb
, ar
->net_dev
);
1304 conn
->sta_flags
&= ~STA_PS_POLLED
;
1306 spin_lock_bh(&conn
->psq_lock
);
1307 psq_empty
= skb_queue_empty(&conn
->psq
);
1308 spin_unlock_bh(&conn
->psq_lock
);
1311 ath6kl_wmi_set_pvb_cmd(ar
->wmi
, conn
->aid
, 0);
1314 void ath6kl_dtimexpiry_event(struct ath6kl
*ar
)
1316 bool mcastq_empty
= false;
1317 struct sk_buff
*skb
;
1318 /* TODO: Pass vif instead of taking it from ar */
1319 struct ath6kl_vif
*vif
= ar
->vif
;
1322 * If there are no associated STAs, ignore the DTIM expiry event.
1323 * There can be potential race conditions where the last associated
1324 * STA may disconnect & before the host could clear the 'Indicate
1325 * DTIM' request to the firmware, the firmware would have just
1326 * indicated a DTIM expiry event. The race is between 'clear DTIM
1327 * expiry cmd' going from the host to the firmware & the DTIM
1328 * expiry event happening from the firmware to the host.
1330 if (!ar
->sta_list_index
)
1333 spin_lock_bh(&ar
->mcastpsq_lock
);
1334 mcastq_empty
= skb_queue_empty(&ar
->mcastpsq
);
1335 spin_unlock_bh(&ar
->mcastpsq_lock
);
1340 /* set the STA flag to dtim_expired for the frame to go out */
1341 set_bit(DTIM_EXPIRED
, &vif
->flags
);
1343 spin_lock_bh(&ar
->mcastpsq_lock
);
1344 while ((skb
= skb_dequeue(&ar
->mcastpsq
)) != NULL
) {
1345 spin_unlock_bh(&ar
->mcastpsq_lock
);
1347 ath6kl_data_tx(skb
, ar
->net_dev
);
1349 spin_lock_bh(&ar
->mcastpsq_lock
);
1351 spin_unlock_bh(&ar
->mcastpsq_lock
);
1353 clear_bit(DTIM_EXPIRED
, &vif
->flags
);
1355 /* clear the LSB of the BitMapCtl field of the TIM IE */
1356 ath6kl_wmi_set_pvb_cmd(ar
->wmi
, MCAST_AID
, 0);
1359 void ath6kl_disconnect_event(struct ath6kl
*ar
, u8 reason
, u8
*bssid
,
1360 u8 assoc_resp_len
, u8
*assoc_info
,
1361 u16 prot_reason_status
)
1363 /* TODO: Findout vif instead of taking it from ar */
1364 struct ath6kl_vif
*vif
= ar
->vif
;
1366 if (vif
->nw_type
== AP_NETWORK
) {
1367 if (!ath6kl_remove_sta(ar
, bssid
, prot_reason_status
))
1370 /* if no more associated STAs, empty the mcast PS q */
1371 if (ar
->sta_list_index
== 0) {
1372 spin_lock_bh(&ar
->mcastpsq_lock
);
1373 skb_queue_purge(&ar
->mcastpsq
);
1374 spin_unlock_bh(&ar
->mcastpsq_lock
);
1376 /* clear the LSB of the TIM IE's BitMapCtl field */
1377 if (test_bit(WMI_READY
, &ar
->flag
))
1378 ath6kl_wmi_set_pvb_cmd(ar
->wmi
, MCAST_AID
, 0);
1381 if (!is_broadcast_ether_addr(bssid
)) {
1382 /* send event to application */
1383 cfg80211_del_sta(ar
->net_dev
, bssid
, GFP_KERNEL
);
1386 if (memcmp(ar
->net_dev
->dev_addr
, bssid
, ETH_ALEN
) == 0) {
1387 memset(vif
->wep_key_list
, 0, sizeof(vif
->wep_key_list
));
1388 clear_bit(CONNECTED
, &vif
->flags
);
1393 ath6kl_cfg80211_disconnect_event(ar
, reason
, bssid
,
1394 assoc_resp_len
, assoc_info
,
1395 prot_reason_status
);
1397 aggr_reset_state(vif
->aggr_cntxt
);
1399 del_timer(&ar
->disconnect_timer
);
1401 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT
,
1402 "disconnect reason is %d\n", reason
);
1405 * If the event is due to disconnect cmd from the host, only they
1406 * the target would stop trying to connect. Under any other
1407 * condition, target would keep trying to connect.
1409 if (reason
== DISCONNECT_CMD
) {
1410 if (!ar
->usr_bss_filter
&& test_bit(WMI_READY
, &ar
->flag
))
1411 ath6kl_wmi_bssfilter_cmd(ar
->wmi
, NONE_BSS_FILTER
, 0);
1413 set_bit(CONNECT_PEND
, &vif
->flags
);
1414 if (((reason
== ASSOC_FAILED
) &&
1415 (prot_reason_status
== 0x11)) ||
1416 ((reason
== ASSOC_FAILED
) && (prot_reason_status
== 0x0)
1417 && (ar
->reconnect_flag
== 1))) {
1418 set_bit(CONNECTED
, &vif
->flags
);
1423 /* update connect & link status atomically */
1424 spin_lock_bh(&ar
->lock
);
1425 clear_bit(CONNECTED
, &vif
->flags
);
1426 netif_carrier_off(ar
->net_dev
);
1427 spin_unlock_bh(&ar
->lock
);
1429 if ((reason
!= CSERV_DISCONNECT
) || (ar
->reconnect_flag
!= 1))
1430 ar
->reconnect_flag
= 0;
1432 if (reason
!= CSERV_DISCONNECT
)
1433 ar
->user_key_ctrl
= 0;
1435 netif_stop_queue(ar
->net_dev
);
1436 memset(vif
->bssid
, 0, sizeof(vif
->bssid
));
1439 ath6kl_tx_data_cleanup(ar
);
1442 static int ath6kl_open(struct net_device
*dev
)
1444 struct ath6kl
*ar
= ath6kl_priv(dev
);
1445 struct ath6kl_vif
*vif
= netdev_priv(dev
);
1447 spin_lock_bh(&ar
->lock
);
1449 set_bit(WLAN_ENABLED
, &vif
->flags
);
1451 if (test_bit(CONNECTED
, &vif
->flags
)) {
1452 netif_carrier_on(dev
);
1453 netif_wake_queue(dev
);
1455 netif_carrier_off(dev
);
1457 spin_unlock_bh(&ar
->lock
);
1462 static int ath6kl_close(struct net_device
*dev
)
1464 struct ath6kl
*ar
= ath6kl_priv(dev
);
1465 struct ath6kl_vif
*vif
= netdev_priv(dev
);
1467 netif_stop_queue(dev
);
1469 ath6kl_disconnect(ar
);
1471 if (test_bit(WMI_READY
, &ar
->flag
)) {
1472 if (ath6kl_wmi_scanparams_cmd(ar
->wmi
, 0xFFFF, 0, 0, 0, 0, 0, 0,
1476 clear_bit(WLAN_ENABLED
, &vif
->flags
);
1479 ath6kl_cfg80211_scan_complete_event(ar
, -ECANCELED
);
1484 static struct net_device_stats
*ath6kl_get_stats(struct net_device
*dev
)
1486 struct ath6kl
*ar
= ath6kl_priv(dev
);
1488 return &ar
->net_stats
;
1491 static struct net_device_ops ath6kl_netdev_ops
= {
1492 .ndo_open
= ath6kl_open
,
1493 .ndo_stop
= ath6kl_close
,
1494 .ndo_start_xmit
= ath6kl_data_tx
,
1495 .ndo_get_stats
= ath6kl_get_stats
,
1498 void init_netdev(struct net_device
*dev
)
1500 dev
->netdev_ops
= &ath6kl_netdev_ops
;
1501 dev
->watchdog_timeo
= ATH6KL_TX_TIMEOUT
;
1503 dev
->needed_headroom
= ETH_HLEN
;
1504 dev
->needed_headroom
+= sizeof(struct ath6kl_llc_snap_hdr
) +
1505 sizeof(struct wmi_data_hdr
) + HTC_HDR_LENGTH
1506 + WMI_MAX_TX_META_SZ
+ ATH6KL_HTC_ALIGN_BYTES
;