2 * Intel Wireless Multicomm 3200 WiFi driver
4 * Copyright (C) 2009 Intel Corporation. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
16 * * Neither the name of Intel Corporation nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 * Intel Corporation <ilw@linux.intel.com>
34 * Samuel Ortiz <samuel.ortiz@intel.com>
35 * Zhu Yi <yi.zhu@intel.com>
39 #include <linux/kernel.h>
40 #include <linux/netdevice.h>
41 #include <linux/sched.h>
42 #include <linux/etherdevice.h>
43 #include <linux/wireless.h>
44 #include <linux/ieee80211.h>
45 #include <linux/if_arp.h>
46 #include <linux/list.h>
47 #include <linux/slab.h>
48 #include <net/iw_handler.h>
60 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr
*hdr
)
62 if ((le32_to_cpu(hdr
->cmd
) == UMAC_PAD_TERMINAL
) ||
63 (le32_to_cpu(hdr
->size
) == UMAC_PAD_TERMINAL
))
69 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr
*hdr
)
71 return ALIGN(le32_to_cpu(hdr
->size
) + sizeof(struct iwm_udma_in_hdr
),
76 * Notification handlers:
78 * For every possible notification we can receive from the
79 * target, we have a handler.
80 * When we get a target notification, and there is no one
81 * waiting for it, it's just processed through the rx code
85 * -> iwm_rx_handle_umac()
86 * -> iwm_rx_handle_wifi()
87 * -> iwm_rx_handle_resp()
92 * -> iwm_rx_handle_non_wifi()
94 * If there are processes waiting for this notification, then
95 * iwm_rx_handle_wifi() just wakes those processes up and they
96 * grab the pending notification.
98 static int iwm_ntf_error(struct iwm_priv
*iwm
, u8
*buf
,
99 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
101 struct iwm_umac_notif_error
*error
;
102 struct iwm_fw_error_hdr
*fw_err
;
104 error
= (struct iwm_umac_notif_error
*)buf
;
105 fw_err
= &error
->err
;
107 memcpy(iwm
->last_fw_err
, fw_err
, sizeof(struct iwm_fw_error_hdr
));
109 IWM_ERR(iwm
, "%cMAC FW ERROR:\n",
110 (le32_to_cpu(fw_err
->category
) == UMAC_SYS_ERR_CAT_LMAC
) ? 'L' : 'U');
111 IWM_ERR(iwm
, "\tCategory: %d\n", le32_to_cpu(fw_err
->category
));
112 IWM_ERR(iwm
, "\tStatus: 0x%x\n", le32_to_cpu(fw_err
->status
));
113 IWM_ERR(iwm
, "\tPC: 0x%x\n", le32_to_cpu(fw_err
->pc
));
114 IWM_ERR(iwm
, "\tblink1: %d\n", le32_to_cpu(fw_err
->blink1
));
115 IWM_ERR(iwm
, "\tblink2: %d\n", le32_to_cpu(fw_err
->blink2
));
116 IWM_ERR(iwm
, "\tilink1: %d\n", le32_to_cpu(fw_err
->ilink1
));
117 IWM_ERR(iwm
, "\tilink2: %d\n", le32_to_cpu(fw_err
->ilink2
));
118 IWM_ERR(iwm
, "\tData1: 0x%x\n", le32_to_cpu(fw_err
->data1
));
119 IWM_ERR(iwm
, "\tData2: 0x%x\n", le32_to_cpu(fw_err
->data2
));
120 IWM_ERR(iwm
, "\tLine number: %d\n", le32_to_cpu(fw_err
->line_num
));
121 IWM_ERR(iwm
, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err
->umac_status
));
122 IWM_ERR(iwm
, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err
->lmac_status
));
123 IWM_ERR(iwm
, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err
->sdio_status
));
130 static int iwm_ntf_umac_alive(struct iwm_priv
*iwm
, u8
*buf
,
131 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
133 struct iwm_umac_notif_alive
*alive_resp
=
134 (struct iwm_umac_notif_alive
*)(buf
);
135 u16 status
= le16_to_cpu(alive_resp
->status
);
137 if (status
== UMAC_NTFY_ALIVE_STATUS_ERR
) {
138 IWM_ERR(iwm
, "Receive error UMAC_ALIVE\n");
142 iwm_tx_credit_init_pools(iwm
, alive_resp
);
147 static int iwm_ntf_init_complete(struct iwm_priv
*iwm
, u8
*buf
,
148 unsigned long buf_size
,
149 struct iwm_wifi_cmd
*cmd
)
151 struct wiphy
*wiphy
= iwm_to_wiphy(iwm
);
152 struct iwm_umac_notif_init_complete
*init_complete
=
153 (struct iwm_umac_notif_init_complete
*)(buf
);
154 u16 status
= le16_to_cpu(init_complete
->status
);
155 bool blocked
= (status
== UMAC_NTFY_INIT_COMPLETE_STATUS_ERR
);
158 IWM_DBG_NTF(iwm
, DBG
, "Hardware rf kill is on (radio off)\n");
160 IWM_DBG_NTF(iwm
, DBG
, "Hardware rf kill is off (radio on)\n");
162 wiphy_rfkill_set_hw_state(wiphy
, blocked
);
167 static int iwm_ntf_tx_credit_update(struct iwm_priv
*iwm
, u8
*buf
,
168 unsigned long buf_size
,
169 struct iwm_wifi_cmd
*cmd
)
171 int pool_nr
, total_freed_pages
;
172 unsigned long pool_map
;
174 struct iwm_umac_notif_page_dealloc
*dealloc
=
175 (struct iwm_umac_notif_page_dealloc
*)buf
;
177 pool_nr
= GET_VAL32(dealloc
->changes
, UMAC_DEALLOC_NTFY_CHANGES_CNT
);
178 pool_map
= GET_VAL32(dealloc
->changes
, UMAC_DEALLOC_NTFY_CHANGES_MSK
);
180 IWM_DBG_TX(iwm
, DBG
, "UMAC dealloc notification: pool nr %d, "
181 "update map 0x%lx\n", pool_nr
, pool_map
);
183 spin_lock(&iwm
->tx_credit
.lock
);
185 for (i
= 0; i
< pool_nr
; i
++) {
186 id
= GET_VAL32(dealloc
->grp_info
[i
],
187 UMAC_DEALLOC_NTFY_GROUP_NUM
);
188 if (test_bit(id
, &pool_map
)) {
189 total_freed_pages
= GET_VAL32(dealloc
->grp_info
[i
],
190 UMAC_DEALLOC_NTFY_PAGE_CNT
);
191 iwm_tx_credit_inc(iwm
, id
, total_freed_pages
);
195 spin_unlock(&iwm
->tx_credit
.lock
);
200 static int iwm_ntf_umac_reset(struct iwm_priv
*iwm
, u8
*buf
,
201 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
203 IWM_DBG_NTF(iwm
, DBG
, "UMAC RESET done\n");
208 static int iwm_ntf_lmac_version(struct iwm_priv
*iwm
, u8
*buf
,
209 unsigned long buf_size
,
210 struct iwm_wifi_cmd
*cmd
)
212 IWM_DBG_NTF(iwm
, INFO
, "LMAC Version: %x.%x\n", buf
[9], buf
[8]);
217 static int iwm_ntf_tx(struct iwm_priv
*iwm
, u8
*buf
,
218 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
220 struct iwm_lmac_tx_resp
*tx_resp
;
221 struct iwm_umac_wifi_in_hdr
*hdr
;
223 tx_resp
= (struct iwm_lmac_tx_resp
*)
224 (buf
+ sizeof(struct iwm_umac_wifi_in_hdr
));
225 hdr
= (struct iwm_umac_wifi_in_hdr
*)buf
;
227 IWM_DBG_TX(iwm
, DBG
, "REPLY_TX, buf size: %lu\n", buf_size
);
229 IWM_DBG_TX(iwm
, DBG
, "Seqnum: %d\n",
230 le16_to_cpu(hdr
->sw_hdr
.cmd
.seq_num
));
231 IWM_DBG_TX(iwm
, DBG
, "\tFrame cnt: %d\n", tx_resp
->frame_cnt
);
232 IWM_DBG_TX(iwm
, DBG
, "\tRetry cnt: %d\n",
233 le16_to_cpu(tx_resp
->retry_cnt
));
234 IWM_DBG_TX(iwm
, DBG
, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp
->seq_ctl
));
235 IWM_DBG_TX(iwm
, DBG
, "\tByte cnt: %d\n",
236 le16_to_cpu(tx_resp
->byte_cnt
));
237 IWM_DBG_TX(iwm
, DBG
, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp
->status
));
243 static int iwm_ntf_calib_res(struct iwm_priv
*iwm
, u8
*buf
,
244 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
248 struct iwm_lmac_calib_hdr
*hdr
= (struct iwm_lmac_calib_hdr
*)
249 (buf
+ sizeof(struct iwm_umac_wifi_in_hdr
));
251 opcode
= hdr
->opcode
;
253 BUG_ON(opcode
>= CALIBRATION_CMD_NUM
||
254 opcode
< PHY_CALIBRATE_OPCODES_NUM
);
256 IWM_DBG_NTF(iwm
, DBG
, "Store calibration result for opcode: %d\n",
259 buf_size
-= sizeof(struct iwm_umac_wifi_in_hdr
);
260 calib_buf
= iwm
->calib_res
[opcode
].buf
;
262 if (!calib_buf
|| (iwm
->calib_res
[opcode
].size
< buf_size
)) {
264 calib_buf
= kzalloc(buf_size
, GFP_KERNEL
);
266 IWM_ERR(iwm
, "Memory allocation failed: calib_res\n");
269 iwm
->calib_res
[opcode
].buf
= calib_buf
;
270 iwm
->calib_res
[opcode
].size
= buf_size
;
273 memcpy(calib_buf
, hdr
, buf_size
);
274 set_bit(opcode
- PHY_CALIBRATE_OPCODES_NUM
, &iwm
->calib_done_map
);
279 static int iwm_ntf_calib_complete(struct iwm_priv
*iwm
, u8
*buf
,
280 unsigned long buf_size
,
281 struct iwm_wifi_cmd
*cmd
)
283 IWM_DBG_NTF(iwm
, DBG
, "Calibration completed\n");
288 static int iwm_ntf_calib_cfg(struct iwm_priv
*iwm
, u8
*buf
,
289 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
291 struct iwm_lmac_cal_cfg_resp
*cal_resp
;
293 cal_resp
= (struct iwm_lmac_cal_cfg_resp
*)
294 (buf
+ sizeof(struct iwm_umac_wifi_in_hdr
));
296 IWM_DBG_NTF(iwm
, DBG
, "Calibration CFG command status: %d\n",
297 le32_to_cpu(cal_resp
->status
));
302 static int iwm_ntf_wifi_status(struct iwm_priv
*iwm
, u8
*buf
,
303 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
305 struct iwm_umac_notif_wifi_status
*status
=
306 (struct iwm_umac_notif_wifi_status
*)buf
;
308 iwm
->core_enabled
|= le16_to_cpu(status
->status
);
313 static struct iwm_rx_ticket_node
*
314 iwm_rx_ticket_node_alloc(struct iwm_priv
*iwm
, struct iwm_rx_ticket
*ticket
)
316 struct iwm_rx_ticket_node
*ticket_node
;
318 ticket_node
= kzalloc(sizeof(struct iwm_rx_ticket_node
), GFP_KERNEL
);
320 IWM_ERR(iwm
, "Couldn't allocate ticket node\n");
321 return ERR_PTR(-ENOMEM
);
324 ticket_node
->ticket
= kmemdup(ticket
, sizeof(struct iwm_rx_ticket
),
326 if (!ticket_node
->ticket
) {
327 IWM_ERR(iwm
, "Couldn't allocate RX ticket\n");
329 return ERR_PTR(-ENOMEM
);
332 INIT_LIST_HEAD(&ticket_node
->node
);
337 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node
*ticket_node
)
339 kfree(ticket_node
->ticket
);
343 static struct iwm_rx_packet
*iwm_rx_packet_get(struct iwm_priv
*iwm
, u16 id
)
345 u8 id_hash
= IWM_RX_ID_GET_HASH(id
);
346 struct iwm_rx_packet
*packet
;
348 spin_lock(&iwm
->packet_lock
[id_hash
]);
349 list_for_each_entry(packet
, &iwm
->rx_packets
[id_hash
], node
)
350 if (packet
->id
== id
) {
351 list_del(&packet
->node
);
352 spin_unlock(&iwm
->packet_lock
[id_hash
]);
356 spin_unlock(&iwm
->packet_lock
[id_hash
]);
360 static struct iwm_rx_packet
*iwm_rx_packet_alloc(struct iwm_priv
*iwm
, u8
*buf
,
363 struct iwm_rx_packet
*packet
;
365 packet
= kzalloc(sizeof(struct iwm_rx_packet
), GFP_KERNEL
);
367 IWM_ERR(iwm
, "Couldn't allocate packet\n");
368 return ERR_PTR(-ENOMEM
);
371 packet
->skb
= dev_alloc_skb(size
);
373 IWM_ERR(iwm
, "Couldn't allocate packet SKB\n");
375 return ERR_PTR(-ENOMEM
);
378 packet
->pkt_size
= size
;
380 skb_put(packet
->skb
, size
);
381 memcpy(packet
->skb
->data
, buf
, size
);
382 INIT_LIST_HEAD(&packet
->node
);
388 void iwm_rx_free(struct iwm_priv
*iwm
)
390 struct iwm_rx_ticket_node
*ticket
, *nt
;
391 struct iwm_rx_packet
*packet
, *np
;
394 spin_lock(&iwm
->ticket_lock
);
395 list_for_each_entry_safe(ticket
, nt
, &iwm
->rx_tickets
, node
) {
396 list_del(&ticket
->node
);
397 iwm_rx_ticket_node_free(ticket
);
399 spin_unlock(&iwm
->ticket_lock
);
401 for (i
= 0; i
< IWM_RX_ID_HASH
; i
++) {
402 spin_lock(&iwm
->packet_lock
[i
]);
403 list_for_each_entry_safe(packet
, np
, &iwm
->rx_packets
[i
],
405 list_del(&packet
->node
);
406 kfree_skb(packet
->skb
);
409 spin_unlock(&iwm
->packet_lock
[i
]);
413 static int iwm_ntf_rx_ticket(struct iwm_priv
*iwm
, u8
*buf
,
414 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
416 struct iwm_umac_notif_rx_ticket
*ntf_rx_ticket
=
417 (struct iwm_umac_notif_rx_ticket
*)buf
;
418 struct iwm_rx_ticket
*ticket
=
419 (struct iwm_rx_ticket
*)ntf_rx_ticket
->tickets
;
420 int i
, schedule_rx
= 0;
422 for (i
= 0; i
< ntf_rx_ticket
->num_tickets
; i
++) {
423 struct iwm_rx_ticket_node
*ticket_node
;
425 switch (le16_to_cpu(ticket
->action
)) {
426 case IWM_RX_TICKET_RELEASE
:
427 case IWM_RX_TICKET_DROP
:
428 /* We can push the packet to the stack */
429 ticket_node
= iwm_rx_ticket_node_alloc(iwm
, ticket
);
430 if (IS_ERR(ticket_node
))
431 return PTR_ERR(ticket_node
);
433 IWM_DBG_RX(iwm
, DBG
, "TICKET %s(%d)\n",
434 __le16_to_cpu(ticket
->action
) ==
435 IWM_RX_TICKET_RELEASE
?
438 spin_lock(&iwm
->ticket_lock
);
439 list_add_tail(&ticket_node
->node
, &iwm
->rx_tickets
);
440 spin_unlock(&iwm
->ticket_lock
);
443 * We received an Rx ticket, most likely there's
444 * a packet pending for it, it's not worth going
445 * through the packet hash list to double check.
446 * Let's just fire the rx worker..
453 IWM_ERR(iwm
, "Invalid RX ticket action: 0x%x\n",
461 queue_work(iwm
->rx_wq
, &iwm
->rx_worker
);
466 static int iwm_ntf_rx_packet(struct iwm_priv
*iwm
, u8
*buf
,
467 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
469 struct iwm_umac_wifi_in_hdr
*wifi_hdr
;
470 struct iwm_rx_packet
*packet
;
475 IWM_DBG_RX(iwm
, DBG
, "\n");
477 wifi_hdr
= (struct iwm_umac_wifi_in_hdr
*)buf
;
478 id
= le16_to_cpu(wifi_hdr
->sw_hdr
.cmd
.seq_num
);
479 buf_offset
= sizeof(struct iwm_umac_wifi_in_hdr
);
480 packet_size
= buf_size
- sizeof(struct iwm_umac_wifi_in_hdr
);
482 IWM_DBG_RX(iwm
, DBG
, "CMD:0x%x, seqnum: %d, packet size: %d\n",
483 wifi_hdr
->sw_hdr
.cmd
.cmd
, id
, packet_size
);
484 IWM_DBG_RX(iwm
, DBG
, "Packet id: %d\n", id
);
485 IWM_HEXDUMP(iwm
, DBG
, RX
, "PACKET: ", buf
+ buf_offset
, packet_size
);
487 packet
= iwm_rx_packet_alloc(iwm
, buf
+ buf_offset
, packet_size
, id
);
489 return PTR_ERR(packet
);
491 id_hash
= IWM_RX_ID_GET_HASH(id
);
492 spin_lock(&iwm
->packet_lock
[id_hash
]);
493 list_add_tail(&packet
->node
, &iwm
->rx_packets
[id_hash
]);
494 spin_unlock(&iwm
->packet_lock
[id_hash
]);
496 /* We might (unlikely) have received the packet _after_ the ticket */
497 queue_work(iwm
->rx_wq
, &iwm
->rx_worker
);
503 static int iwm_mlme_assoc_start(struct iwm_priv
*iwm
, u8
*buf
,
504 unsigned long buf_size
,
505 struct iwm_wifi_cmd
*cmd
)
507 struct iwm_umac_notif_assoc_start
*start
;
509 start
= (struct iwm_umac_notif_assoc_start
*)buf
;
511 IWM_DBG_MLME(iwm
, INFO
, "Association with %pM Started, reason: %d\n",
512 start
->bssid
, le32_to_cpu(start
->roam_reason
));
514 wake_up_interruptible(&iwm
->mlme_queue
);
519 static u8
iwm_is_open_wep_profile(struct iwm_priv
*iwm
)
521 if ((iwm
->umac_profile
->sec
.ucast_cipher
== UMAC_CIPHER_TYPE_WEP_40
||
522 iwm
->umac_profile
->sec
.ucast_cipher
== UMAC_CIPHER_TYPE_WEP_104
) &&
523 (iwm
->umac_profile
->sec
.ucast_cipher
==
524 iwm
->umac_profile
->sec
.mcast_cipher
) &&
525 (iwm
->umac_profile
->sec
.auth_type
== UMAC_AUTH_TYPE_OPEN
))
531 static int iwm_mlme_assoc_complete(struct iwm_priv
*iwm
, u8
*buf
,
532 unsigned long buf_size
,
533 struct iwm_wifi_cmd
*cmd
)
535 struct wiphy
*wiphy
= iwm_to_wiphy(iwm
);
536 struct ieee80211_channel
*chan
;
537 struct iwm_umac_notif_assoc_complete
*complete
=
538 (struct iwm_umac_notif_assoc_complete
*)buf
;
540 IWM_DBG_MLME(iwm
, INFO
, "Association with %pM completed, status: %d\n",
541 complete
->bssid
, complete
->status
);
543 switch (le32_to_cpu(complete
->status
)) {
544 case UMAC_ASSOC_COMPLETE_SUCCESS
:
545 chan
= ieee80211_get_channel(wiphy
,
546 ieee80211_channel_to_frequency(complete
->channel
,
547 complete
->band
== UMAC_BAND_2GHZ
?
548 IEEE80211_BAND_2GHZ
:
549 IEEE80211_BAND_5GHZ
));
550 if (!chan
|| chan
->flags
& IEEE80211_CHAN_DISABLED
) {
551 /* Associated to a unallowed channel, disassociate. */
552 __iwm_invalidate_mlme_profile(iwm
);
553 IWM_WARN(iwm
, "Couldn't associate with %pM due to "
554 "channel %d is disabled. Check your local "
555 "regulatory setting.\n",
556 complete
->bssid
, complete
->channel
);
560 set_bit(IWM_STATUS_ASSOCIATED
, &iwm
->status
);
561 memcpy(iwm
->bssid
, complete
->bssid
, ETH_ALEN
);
562 iwm
->channel
= complete
->channel
;
564 /* Internal roaming state, avoid notifying SME. */
565 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING
, &iwm
->status
)
566 && iwm
->conf
.mode
== UMAC_MODE_BSS
) {
567 cancel_delayed_work(&iwm
->disconnect
);
568 cfg80211_roamed(iwm_to_ndev(iwm
), NULL
,
570 iwm
->req_ie
, iwm
->req_ie_len
,
571 iwm
->resp_ie
, iwm
->resp_ie_len
,
578 if (iwm
->conf
.mode
== UMAC_MODE_IBSS
)
581 if (!test_bit(IWM_STATUS_RESETTING
, &iwm
->status
))
582 cfg80211_connect_result(iwm_to_ndev(iwm
),
584 iwm
->req_ie
, iwm
->req_ie_len
,
585 iwm
->resp_ie
, iwm
->resp_ie_len
,
589 cfg80211_roamed(iwm_to_ndev(iwm
), NULL
,
591 iwm
->req_ie
, iwm
->req_ie_len
,
592 iwm
->resp_ie
, iwm
->resp_ie_len
,
595 case UMAC_ASSOC_COMPLETE_FAILURE
:
597 clear_bit(IWM_STATUS_ASSOCIATED
, &iwm
->status
);
598 memset(iwm
->bssid
, 0, ETH_ALEN
);
601 /* Internal roaming state, avoid notifying SME. */
602 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING
, &iwm
->status
)
603 && iwm
->conf
.mode
== UMAC_MODE_BSS
) {
604 cancel_delayed_work(&iwm
->disconnect
);
610 if (iwm
->conf
.mode
== UMAC_MODE_IBSS
)
613 if (!test_bit(IWM_STATUS_RESETTING
, &iwm
->status
))
614 if (!iwm_is_open_wep_profile(iwm
)) {
615 cfg80211_connect_result(iwm_to_ndev(iwm
),
618 WLAN_STATUS_UNSPECIFIED_FAILURE
,
621 /* Let's try shared WEP auth */
622 IWM_ERR(iwm
, "Trying WEP shared auth\n");
623 schedule_work(&iwm
->auth_retry_worker
);
626 cfg80211_disconnected(iwm_to_ndev(iwm
), 0, NULL
, 0,
633 clear_bit(IWM_STATUS_RESETTING
, &iwm
->status
);
637 cfg80211_ibss_joined(iwm_to_ndev(iwm
), iwm
->bssid
, GFP_KERNEL
);
638 clear_bit(IWM_STATUS_RESETTING
, &iwm
->status
);
642 static int iwm_mlme_profile_invalidate(struct iwm_priv
*iwm
, u8
*buf
,
643 unsigned long buf_size
,
644 struct iwm_wifi_cmd
*cmd
)
646 struct iwm_umac_notif_profile_invalidate
*invalid
;
649 invalid
= (struct iwm_umac_notif_profile_invalidate
*)buf
;
650 reason
= le32_to_cpu(invalid
->reason
);
652 IWM_DBG_MLME(iwm
, INFO
, "Profile Invalidated. Reason: %d\n", reason
);
654 if (reason
!= UMAC_PROFILE_INVALID_REQUEST
&&
655 test_bit(IWM_STATUS_SME_CONNECTING
, &iwm
->status
))
656 cfg80211_connect_result(iwm_to_ndev(iwm
), NULL
, NULL
, 0, NULL
,
657 0, WLAN_STATUS_UNSPECIFIED_FAILURE
,
660 clear_bit(IWM_STATUS_SME_CONNECTING
, &iwm
->status
);
661 clear_bit(IWM_STATUS_ASSOCIATED
, &iwm
->status
);
663 iwm
->umac_profile_active
= 0;
664 memset(iwm
->bssid
, 0, ETH_ALEN
);
669 wake_up_interruptible(&iwm
->mlme_queue
);
674 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
676 static int iwm_mlme_connection_terminated(struct iwm_priv
*iwm
, u8
*buf
,
677 unsigned long buf_size
,
678 struct iwm_wifi_cmd
*cmd
)
680 IWM_DBG_MLME(iwm
, DBG
, "Connection terminated\n");
682 schedule_delayed_work(&iwm
->disconnect
, IWM_DISCONNECT_INTERVAL
);
687 static int iwm_mlme_scan_complete(struct iwm_priv
*iwm
, u8
*buf
,
688 unsigned long buf_size
,
689 struct iwm_wifi_cmd
*cmd
)
692 struct iwm_umac_notif_scan_complete
*scan_complete
=
693 (struct iwm_umac_notif_scan_complete
*)buf
;
694 u32 result
= le32_to_cpu(scan_complete
->result
);
696 IWM_DBG_MLME(iwm
, INFO
, "type:0x%x result:0x%x seq:%d\n",
697 le32_to_cpu(scan_complete
->type
),
698 le32_to_cpu(scan_complete
->result
),
699 scan_complete
->seq_num
);
701 if (!test_and_clear_bit(IWM_STATUS_SCANNING
, &iwm
->status
)) {
702 IWM_ERR(iwm
, "Scan complete while device not scanning\n");
705 if (!iwm
->scan_request
)
708 ret
= iwm_cfg80211_inform_bss(iwm
);
710 cfg80211_scan_done(iwm
->scan_request
,
711 (result
& UMAC_SCAN_RESULT_ABORTED
) ? 1 : !!ret
);
712 iwm
->scan_request
= NULL
;
717 static int iwm_mlme_update_sta_table(struct iwm_priv
*iwm
, u8
*buf
,
718 unsigned long buf_size
,
719 struct iwm_wifi_cmd
*cmd
)
721 struct iwm_umac_notif_sta_info
*umac_sta
=
722 (struct iwm_umac_notif_sta_info
*)buf
;
723 struct iwm_sta_info
*sta
;
726 switch (le32_to_cpu(umac_sta
->opcode
)) {
727 case UMAC_OPCODE_ADD_MODIFY
:
728 sta
= &iwm
->sta_table
[GET_VAL8(umac_sta
->sta_id
, LMAC_STA_ID
)];
730 IWM_DBG_MLME(iwm
, INFO
, "%s STA: ID = %d, Color = %d, "
731 "addr = %pM, qos = %d\n",
732 sta
->valid
? "Modify" : "Add",
733 GET_VAL8(umac_sta
->sta_id
, LMAC_STA_ID
),
734 GET_VAL8(umac_sta
->sta_id
, LMAC_STA_COLOR
),
736 umac_sta
->flags
& UMAC_STA_FLAG_QOS
);
739 sta
->qos
= umac_sta
->flags
& UMAC_STA_FLAG_QOS
;
740 sta
->color
= GET_VAL8(umac_sta
->sta_id
, LMAC_STA_COLOR
);
741 memcpy(sta
->addr
, umac_sta
->mac_addr
, ETH_ALEN
);
743 case UMAC_OPCODE_REMOVE
:
744 IWM_DBG_MLME(iwm
, INFO
, "Remove STA: ID = %d, Color = %d, "
746 GET_VAL8(umac_sta
->sta_id
, LMAC_STA_ID
),
747 GET_VAL8(umac_sta
->sta_id
, LMAC_STA_COLOR
),
750 sta
= &iwm
->sta_table
[GET_VAL8(umac_sta
->sta_id
, LMAC_STA_ID
)];
752 if (!memcmp(sta
->addr
, umac_sta
->mac_addr
, ETH_ALEN
))
756 case UMAC_OPCODE_CLEAR_ALL
:
757 for (i
= 0; i
< IWM_STA_TABLE_NUM
; i
++)
758 iwm
->sta_table
[i
].valid
= 0;
768 static int iwm_mlme_medium_lost(struct iwm_priv
*iwm
, u8
*buf
,
769 unsigned long buf_size
,
770 struct iwm_wifi_cmd
*cmd
)
772 struct wiphy
*wiphy
= iwm_to_wiphy(iwm
);
774 IWM_DBG_NTF(iwm
, DBG
, "WiFi/WiMax coexistence radio is OFF\n");
776 wiphy_rfkill_set_hw_state(wiphy
, true);
781 static int iwm_mlme_update_bss_table(struct iwm_priv
*iwm
, u8
*buf
,
782 unsigned long buf_size
,
783 struct iwm_wifi_cmd
*cmd
)
785 struct wiphy
*wiphy
= iwm_to_wiphy(iwm
);
786 struct ieee80211_mgmt
*mgmt
;
787 struct iwm_umac_notif_bss_info
*umac_bss
=
788 (struct iwm_umac_notif_bss_info
*)buf
;
789 struct ieee80211_channel
*channel
;
790 struct ieee80211_supported_band
*band
;
791 struct iwm_bss_info
*bss
;
794 u16 frame_len
= le16_to_cpu(umac_bss
->frame_len
);
795 size_t bss_len
= sizeof(struct iwm_umac_notif_bss_info
) + frame_len
;
797 mgmt
= (struct ieee80211_mgmt
*)(umac_bss
->frame_buf
);
799 IWM_DBG_MLME(iwm
, DBG
, "New BSS info entry: %pM\n", mgmt
->bssid
);
800 IWM_DBG_MLME(iwm
, DBG
, "\tType: 0x%x\n", le32_to_cpu(umac_bss
->type
));
801 IWM_DBG_MLME(iwm
, DBG
, "\tTimestamp: %d\n",
802 le32_to_cpu(umac_bss
->timestamp
));
803 IWM_DBG_MLME(iwm
, DBG
, "\tTable Index: %d\n",
804 le16_to_cpu(umac_bss
->table_idx
));
805 IWM_DBG_MLME(iwm
, DBG
, "\tBand: %d\n", umac_bss
->band
);
806 IWM_DBG_MLME(iwm
, DBG
, "\tChannel: %d\n", umac_bss
->channel
);
807 IWM_DBG_MLME(iwm
, DBG
, "\tRSSI: %d\n", umac_bss
->rssi
);
808 IWM_DBG_MLME(iwm
, DBG
, "\tFrame Length: %d\n", frame_len
);
810 list_for_each_entry(bss
, &iwm
->bss_list
, node
)
811 if (bss
->bss
->table_idx
== umac_bss
->table_idx
)
814 if (&bss
->node
!= &iwm
->bss_list
) {
815 /* Remove the old BSS entry, we will add it back later. */
816 list_del(&bss
->node
);
821 bss
= kzalloc(sizeof(struct iwm_bss_info
), GFP_KERNEL
);
823 IWM_ERR(iwm
, "Couldn't allocate bss_info\n");
828 bss
->bss
= kzalloc(bss_len
, GFP_KERNEL
);
831 IWM_ERR(iwm
, "Couldn't allocate bss\n");
835 INIT_LIST_HEAD(&bss
->node
);
836 memcpy(bss
->bss
, umac_bss
, bss_len
);
838 if (umac_bss
->band
== UMAC_BAND_2GHZ
)
839 band
= wiphy
->bands
[IEEE80211_BAND_2GHZ
];
840 else if (umac_bss
->band
== UMAC_BAND_5GHZ
)
841 band
= wiphy
->bands
[IEEE80211_BAND_5GHZ
];
843 IWM_ERR(iwm
, "Invalid band: %d\n", umac_bss
->band
);
847 freq
= ieee80211_channel_to_frequency(umac_bss
->channel
, band
->band
);
848 channel
= ieee80211_get_channel(wiphy
, freq
);
849 signal
= umac_bss
->rssi
* 100;
851 bss
->cfg_bss
= cfg80211_inform_bss_frame(wiphy
, channel
,
857 list_add_tail(&bss
->node
, &iwm
->bss_list
);
867 static int iwm_mlme_remove_bss(struct iwm_priv
*iwm
, u8
*buf
,
868 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
870 struct iwm_umac_notif_bss_removed
*bss_rm
=
871 (struct iwm_umac_notif_bss_removed
*)buf
;
872 struct iwm_bss_info
*bss
, *next
;
876 for (i
= 0; i
< le32_to_cpu(bss_rm
->count
); i
++) {
877 table_idx
= le16_to_cpu(bss_rm
->entries
[i
]) &
878 IWM_BSS_REMOVE_INDEX_MSK
;
879 list_for_each_entry_safe(bss
, next
, &iwm
->bss_list
, node
)
880 if (bss
->bss
->table_idx
== cpu_to_le16(table_idx
)) {
881 struct ieee80211_mgmt
*mgmt
;
883 mgmt
= (struct ieee80211_mgmt
*)
884 (bss
->bss
->frame_buf
);
885 IWM_DBG_MLME(iwm
, ERR
, "BSS removed: %pM\n",
887 list_del(&bss
->node
);
896 static int iwm_mlme_mgt_frame(struct iwm_priv
*iwm
, u8
*buf
,
897 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
899 struct iwm_umac_notif_mgt_frame
*mgt_frame
=
900 (struct iwm_umac_notif_mgt_frame
*)buf
;
901 struct ieee80211_mgmt
*mgt
= (struct ieee80211_mgmt
*)mgt_frame
->frame
;
903 IWM_HEXDUMP(iwm
, DBG
, MLME
, "MGT: ", mgt_frame
->frame
,
904 le16_to_cpu(mgt_frame
->len
));
906 if (ieee80211_is_assoc_req(mgt
->frame_control
)) {
907 iwm
->req_ie_len
= le16_to_cpu(mgt_frame
->len
)
908 - offsetof(struct ieee80211_mgmt
,
909 u
.assoc_req
.variable
);
911 iwm
->req_ie
= kmemdup(mgt
->u
.assoc_req
.variable
,
912 iwm
->req_ie_len
, GFP_KERNEL
);
913 } else if (ieee80211_is_reassoc_req(mgt
->frame_control
)) {
914 iwm
->req_ie_len
= le16_to_cpu(mgt_frame
->len
)
915 - offsetof(struct ieee80211_mgmt
,
916 u
.reassoc_req
.variable
);
918 iwm
->req_ie
= kmemdup(mgt
->u
.reassoc_req
.variable
,
919 iwm
->req_ie_len
, GFP_KERNEL
);
920 } else if (ieee80211_is_assoc_resp(mgt
->frame_control
)) {
921 iwm
->resp_ie_len
= le16_to_cpu(mgt_frame
->len
)
922 - offsetof(struct ieee80211_mgmt
,
923 u
.assoc_resp
.variable
);
925 iwm
->resp_ie
= kmemdup(mgt
->u
.assoc_resp
.variable
,
926 iwm
->resp_ie_len
, GFP_KERNEL
);
927 } else if (ieee80211_is_reassoc_resp(mgt
->frame_control
)) {
928 iwm
->resp_ie_len
= le16_to_cpu(mgt_frame
->len
)
929 - offsetof(struct ieee80211_mgmt
,
930 u
.reassoc_resp
.variable
);
932 iwm
->resp_ie
= kmemdup(mgt
->u
.reassoc_resp
.variable
,
933 iwm
->resp_ie_len
, GFP_KERNEL
);
935 IWM_ERR(iwm
, "Unsupported management frame: 0x%x",
936 le16_to_cpu(mgt
->frame_control
));
943 static int iwm_ntf_mlme(struct iwm_priv
*iwm
, u8
*buf
,
944 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
946 struct iwm_umac_notif_wifi_if
*notif
=
947 (struct iwm_umac_notif_wifi_if
*)buf
;
949 switch (notif
->status
) {
950 case WIFI_IF_NTFY_ASSOC_START
:
951 return iwm_mlme_assoc_start(iwm
, buf
, buf_size
, cmd
);
952 case WIFI_IF_NTFY_ASSOC_COMPLETE
:
953 return iwm_mlme_assoc_complete(iwm
, buf
, buf_size
, cmd
);
954 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE
:
955 return iwm_mlme_profile_invalidate(iwm
, buf
, buf_size
, cmd
);
956 case WIFI_IF_NTFY_CONNECTION_TERMINATED
:
957 return iwm_mlme_connection_terminated(iwm
, buf
, buf_size
, cmd
);
958 case WIFI_IF_NTFY_SCAN_COMPLETE
:
959 return iwm_mlme_scan_complete(iwm
, buf
, buf_size
, cmd
);
960 case WIFI_IF_NTFY_STA_TABLE_CHANGE
:
961 return iwm_mlme_update_sta_table(iwm
, buf
, buf_size
, cmd
);
962 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED
:
963 IWM_DBG_MLME(iwm
, DBG
, "Extended IE required\n");
965 case WIFI_IF_NTFY_RADIO_PREEMPTION
:
966 return iwm_mlme_medium_lost(iwm
, buf
, buf_size
, cmd
);
967 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED
:
968 return iwm_mlme_update_bss_table(iwm
, buf
, buf_size
, cmd
);
969 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED
:
970 return iwm_mlme_remove_bss(iwm
, buf
, buf_size
, cmd
);
972 case WIFI_IF_NTFY_MGMT_FRAME
:
973 return iwm_mlme_mgt_frame(iwm
, buf
, buf_size
, cmd
);
974 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START
:
975 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE
:
976 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START
:
977 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT
:
978 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START
:
979 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE
:
980 case WIFI_DBG_IF_NTFY_CNCT_ATC_START
:
981 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION
:
982 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP
:
983 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP
:
984 IWM_DBG_MLME(iwm
, DBG
, "MLME debug notification: 0x%x\n",
988 IWM_ERR(iwm
, "Unhandled notification: 0x%x\n", notif
->status
);
995 #define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
997 static int iwm_ntf_statistics(struct iwm_priv
*iwm
, u8
*buf
,
998 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
1000 struct iwm_umac_notif_stats
*stats
= (struct iwm_umac_notif_stats
*)buf
;
1001 struct iw_statistics
*wstats
= &iwm
->wstats
;
1005 IWM_DBG_MLME(iwm
, DBG
, "Statistics notification received\n");
1007 if (test_bit(IWM_STATUS_ASSOCIATED
, &iwm
->status
)) {
1008 for (i
= 0; i
< UMAC_NTF_RATE_SAMPLE_NR
; i
++) {
1009 max_rate
= max_t(u16
, max_rate
,
1010 max(le16_to_cpu(stats
->tx_rate
[i
]),
1011 le16_to_cpu(stats
->rx_rate
[i
])));
1013 /* UMAC passes rate info multiplies by 2 */
1014 iwm
->rate
= max_rate
>> 1;
1016 iwm
->txpower
= le32_to_cpu(stats
->tx_power
);
1020 wstats
->discard
.nwid
= le32_to_cpu(stats
->rx_drop_other_bssid
);
1021 wstats
->discard
.code
= le32_to_cpu(stats
->rx_drop_decode
);
1022 wstats
->discard
.fragment
= le32_to_cpu(stats
->rx_drop_reassembly
);
1023 wstats
->discard
.retries
= le32_to_cpu(stats
->tx_drop_max_retry
);
1025 wstats
->miss
.beacon
= le32_to_cpu(stats
->missed_beacons
);
1027 /* according to cfg80211 */
1028 if (stats
->rssi_dbm
< -110)
1029 wstats
->qual
.qual
= 0;
1030 else if (stats
->rssi_dbm
> -40)
1031 wstats
->qual
.qual
= 70;
1033 wstats
->qual
.qual
= stats
->rssi_dbm
+ 110;
1035 wstats
->qual
.level
= stats
->rssi_dbm
;
1036 wstats
->qual
.noise
= stats
->noise_dbm
;
1037 wstats
->qual
.updated
= IW_QUAL_ALL_UPDATED
| IW_QUAL_DBM
;
1039 schedule_delayed_work(&iwm
->stats_request
, IWM_STATS_UPDATE_INTERVAL
);
1041 mod_timer(&iwm
->watchdog
, round_jiffies(jiffies
+ IWM_WATCHDOG_PERIOD
));
1046 static int iwm_ntf_eeprom_proxy(struct iwm_priv
*iwm
, u8
*buf
,
1047 unsigned long buf_size
,
1048 struct iwm_wifi_cmd
*cmd
)
1050 struct iwm_umac_cmd_eeprom_proxy
*eeprom_proxy
=
1051 (struct iwm_umac_cmd_eeprom_proxy
*)
1052 (buf
+ sizeof(struct iwm_umac_wifi_in_hdr
));
1053 struct iwm_umac_cmd_eeprom_proxy_hdr
*hdr
= &eeprom_proxy
->hdr
;
1054 u32 hdr_offset
= le32_to_cpu(hdr
->offset
);
1055 u32 hdr_len
= le32_to_cpu(hdr
->len
);
1056 u32 hdr_type
= le32_to_cpu(hdr
->type
);
1058 IWM_DBG_NTF(iwm
, DBG
, "type: 0x%x, len: %d, offset: 0x%x\n",
1059 hdr_type
, hdr_len
, hdr_offset
);
1061 if ((hdr_offset
+ hdr_len
) > IWM_EEPROM_LEN
)
1065 case IWM_UMAC_CMD_EEPROM_TYPE_READ
:
1066 memcpy(iwm
->eeprom
+ hdr_offset
, eeprom_proxy
->buf
, hdr_len
);
1068 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE
:
1076 static int iwm_ntf_channel_info_list(struct iwm_priv
*iwm
, u8
*buf
,
1077 unsigned long buf_size
,
1078 struct iwm_wifi_cmd
*cmd
)
1080 struct iwm_umac_cmd_get_channel_list
*ch_list
=
1081 (struct iwm_umac_cmd_get_channel_list
*)
1082 (buf
+ sizeof(struct iwm_umac_wifi_in_hdr
));
1083 struct wiphy
*wiphy
= iwm_to_wiphy(iwm
);
1084 struct ieee80211_supported_band
*band
;
1087 band
= wiphy
->bands
[IEEE80211_BAND_2GHZ
];
1089 for (i
= 0; i
< band
->n_channels
; i
++) {
1090 unsigned long ch_mask_0
=
1091 le32_to_cpu(ch_list
->ch
[0].channels_mask
);
1092 unsigned long ch_mask_2
=
1093 le32_to_cpu(ch_list
->ch
[2].channels_mask
);
1095 if (!test_bit(i
, &ch_mask_0
))
1096 band
->channels
[i
].flags
|= IEEE80211_CHAN_DISABLED
;
1098 if (!test_bit(i
, &ch_mask_2
))
1099 band
->channels
[i
].flags
|= IEEE80211_CHAN_NO_IBSS
;
1102 band
= wiphy
->bands
[IEEE80211_BAND_5GHZ
];
1104 for (i
= 0; i
< min(band
->n_channels
, 32); i
++) {
1105 unsigned long ch_mask_1
=
1106 le32_to_cpu(ch_list
->ch
[1].channels_mask
);
1107 unsigned long ch_mask_3
=
1108 le32_to_cpu(ch_list
->ch
[3].channels_mask
);
1110 if (!test_bit(i
, &ch_mask_1
))
1111 band
->channels
[i
].flags
|= IEEE80211_CHAN_DISABLED
;
1113 if (!test_bit(i
, &ch_mask_3
))
1114 band
->channels
[i
].flags
|= IEEE80211_CHAN_NO_IBSS
;
1120 static int iwm_ntf_stop_resume_tx(struct iwm_priv
*iwm
, u8
*buf
,
1121 unsigned long buf_size
,
1122 struct iwm_wifi_cmd
*cmd
)
1124 struct iwm_umac_notif_stop_resume_tx
*stp_res_tx
=
1125 (struct iwm_umac_notif_stop_resume_tx
*)buf
;
1126 struct iwm_sta_info
*sta_info
;
1127 struct iwm_tid_info
*tid_info
;
1128 u8 sta_id
= STA_ID_N_COLOR_ID(stp_res_tx
->sta_id
);
1129 u16 tid_msk
= le16_to_cpu(stp_res_tx
->stop_resume_tid_msk
);
1133 IWM_DBG_NTF(iwm
, DBG
, "stop/resume notification:\n"
1136 "\tTID bitmask: 0x%x\n",
1137 stp_res_tx
->flags
, stp_res_tx
->sta_id
,
1138 stp_res_tx
->stop_resume_tid_msk
);
1140 if (stp_res_tx
->flags
& UMAC_STOP_TX_FLAG
)
1143 sta_info
= &iwm
->sta_table
[sta_id
];
1144 if (!sta_info
->valid
) {
1145 IWM_ERR(iwm
, "Stoping an invalid STA: %d %d\n",
1146 sta_id
, stp_res_tx
->sta_id
);
1150 for_each_set_bit(bit
, (unsigned long *)&tid_msk
, IWM_UMAC_TID_NR
) {
1151 tid_info
= &sta_info
->tid_info
[bit
];
1153 mutex_lock(&tid_info
->mutex
);
1154 tid_info
->stopped
= stop
;
1155 mutex_unlock(&tid_info
->mutex
);
1158 struct iwm_tx_queue
*txq
;
1159 int queue
= iwm_tid_to_queue(bit
);
1164 txq
= &iwm
->txq
[queue
];
1166 * If we resume, we have to move our SKBs
1167 * back to the tx queue and queue some work.
1169 spin_lock_bh(&txq
->lock
);
1170 skb_queue_splice_init(&txq
->queue
, &txq
->stopped_queue
);
1171 spin_unlock_bh(&txq
->lock
);
1173 queue_work(txq
->wq
, &txq
->worker
);
1178 /* We send an ACK only for the stop case */
1180 ret
= iwm_send_umac_stop_resume_tx(iwm
, stp_res_tx
);
1185 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv
*iwm
, u8
*buf
,
1186 unsigned long buf_size
,
1187 struct iwm_wifi_cmd
*cmd
)
1189 struct iwm_umac_wifi_if
*hdr
;
1192 IWM_ERR(iwm
, "Couldn't find expected wifi command\n");
1196 hdr
= (struct iwm_umac_wifi_if
*)cmd
->buf
.payload
;
1198 IWM_DBG_NTF(iwm
, DBG
, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1199 "oid is 0x%x\n", hdr
->oid
);
1201 set_bit(hdr
->oid
, &iwm
->wifi_ntfy
[0]);
1202 wake_up_interruptible(&iwm
->wifi_ntfy_queue
);
1205 case UMAC_WIFI_IF_CMD_SET_PROFILE
:
1206 iwm
->umac_profile_active
= 1;
1215 #define CT_KILL_DELAY (30 * HZ)
1216 static int iwm_ntf_card_state(struct iwm_priv
*iwm
, u8
*buf
,
1217 unsigned long buf_size
, struct iwm_wifi_cmd
*cmd
)
1219 struct wiphy
*wiphy
= iwm_to_wiphy(iwm
);
1220 struct iwm_lmac_card_state
*state
= (struct iwm_lmac_card_state
*)
1221 (buf
+ sizeof(struct iwm_umac_wifi_in_hdr
));
1222 u32 flags
= le32_to_cpu(state
->flags
);
1224 IWM_INFO(iwm
, "HW RF Kill %s, CT Kill %s\n",
1225 flags
& IWM_CARD_STATE_HW_DISABLED
? "ON" : "OFF",
1226 flags
& IWM_CARD_STATE_CTKILL_DISABLED
? "ON" : "OFF");
1228 if (flags
& IWM_CARD_STATE_CTKILL_DISABLED
) {
1230 * We got a CTKILL event: We bring the interface down in
1231 * oder to cool the device down, and try to bring it up
1232 * 30 seconds later. If it's still too hot, we'll go through
1233 * this code path again.
1235 cancel_delayed_work_sync(&iwm
->ct_kill_delay
);
1236 schedule_delayed_work(&iwm
->ct_kill_delay
, CT_KILL_DELAY
);
1239 wiphy_rfkill_set_hw_state(wiphy
, flags
&
1240 (IWM_CARD_STATE_HW_DISABLED
|
1241 IWM_CARD_STATE_CTKILL_DISABLED
));
1246 static int iwm_rx_handle_wifi(struct iwm_priv
*iwm
, u8
*buf
,
1247 unsigned long buf_size
)
1249 struct iwm_umac_wifi_in_hdr
*wifi_hdr
;
1250 struct iwm_wifi_cmd
*cmd
;
1255 wifi_hdr
= (struct iwm_umac_wifi_in_hdr
*)buf
;
1256 cmd_id
= wifi_hdr
->sw_hdr
.cmd
.cmd
;
1257 source
= GET_VAL32(wifi_hdr
->hw_hdr
.cmd
, UMAC_HDI_IN_CMD_SOURCE
);
1258 if (source
>= IWM_SRC_NUM
) {
1259 IWM_CRIT(iwm
, "invalid source %d\n", source
);
1263 if (cmd_id
== REPLY_RX_MPDU_CMD
)
1264 trace_iwm_rx_packet(iwm
, buf
, buf_size
);
1265 else if ((cmd_id
== UMAC_NOTIFY_OPCODE_RX_TICKET
) &&
1266 (source
== UMAC_HDI_IN_SOURCE_FW
))
1267 trace_iwm_rx_ticket(iwm
, buf
, buf_size
);
1269 trace_iwm_rx_wifi_cmd(iwm
, wifi_hdr
);
1271 count
= GET_VAL32(wifi_hdr
->sw_hdr
.meta_data
, UMAC_FW_CMD_BYTE_COUNT
);
1272 count
+= sizeof(struct iwm_umac_wifi_in_hdr
) -
1273 sizeof(struct iwm_dev_cmd_hdr
);
1274 if (count
> buf_size
) {
1275 IWM_CRIT(iwm
, "count %d, buf size:%ld\n", count
, buf_size
);
1279 seq_num
= le16_to_cpu(wifi_hdr
->sw_hdr
.cmd
.seq_num
);
1281 IWM_DBG_RX(iwm
, DBG
, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1282 cmd_id
, source
, seq_num
);
1285 * If this is a response to a previously sent command, there must
1286 * be a pending command for this sequence number.
1288 cmd
= iwm_get_pending_wifi_cmd(iwm
, seq_num
);
1290 /* Notify the caller only for sync commands. */
1292 case UMAC_HDI_IN_SOURCE_FHRX
:
1293 if (iwm
->lmac_handlers
[cmd_id
] &&
1294 test_bit(cmd_id
, &iwm
->lmac_handler_map
[0]))
1295 return iwm_notif_send(iwm
, cmd
, cmd_id
, source
,
1298 case UMAC_HDI_IN_SOURCE_FW
:
1299 if (iwm
->umac_handlers
[cmd_id
] &&
1300 test_bit(cmd_id
, &iwm
->umac_handler_map
[0]))
1301 return iwm_notif_send(iwm
, cmd
, cmd_id
, source
,
1304 case UMAC_HDI_IN_SOURCE_UDMA
:
1308 return iwm_rx_handle_resp(iwm
, buf
, count
, cmd
);
1311 int iwm_rx_handle_resp(struct iwm_priv
*iwm
, u8
*buf
, unsigned long buf_size
,
1312 struct iwm_wifi_cmd
*cmd
)
1315 struct iwm_umac_wifi_in_hdr
*wifi_hdr
;
1318 wifi_hdr
= (struct iwm_umac_wifi_in_hdr
*)buf
;
1319 cmd_id
= wifi_hdr
->sw_hdr
.cmd
.cmd
;
1321 source
= GET_VAL32(wifi_hdr
->hw_hdr
.cmd
, UMAC_HDI_IN_CMD_SOURCE
);
1323 IWM_DBG_RX(iwm
, DBG
, "CMD:0x%x, source: 0x%x\n", cmd_id
, source
);
1326 case UMAC_HDI_IN_SOURCE_FHRX
:
1327 if (iwm
->lmac_handlers
[cmd_id
])
1328 ret
= iwm
->lmac_handlers
[cmd_id
]
1329 (iwm
, buf
, buf_size
, cmd
);
1331 case UMAC_HDI_IN_SOURCE_FW
:
1332 if (iwm
->umac_handlers
[cmd_id
])
1333 ret
= iwm
->umac_handlers
[cmd_id
]
1334 (iwm
, buf
, buf_size
, cmd
);
1336 case UMAC_HDI_IN_SOURCE_UDMA
:
1346 static int iwm_rx_handle_nonwifi(struct iwm_priv
*iwm
, u8
*buf
,
1347 unsigned long buf_size
)
1350 struct iwm_udma_in_hdr
*hdr
= (struct iwm_udma_in_hdr
*)buf
;
1351 struct iwm_nonwifi_cmd
*cmd
;
1353 trace_iwm_rx_nonwifi_cmd(iwm
, buf
, buf_size
);
1354 seq_num
= GET_VAL32(hdr
->cmd
, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM
);
1357 * We received a non wifi answer.
1358 * Let's check if there's a pending command for it, and if so
1359 * replace the command payload with the buffer, and then wake the
1361 * That means we only support synchronised non wifi command response
1364 list_for_each_entry(cmd
, &iwm
->nonwifi_pending_cmd
, pending
)
1365 if (cmd
->seq_num
== seq_num
) {
1366 cmd
->resp_received
= 1;
1367 cmd
->buf
.len
= buf_size
;
1368 memcpy(cmd
->buf
.hdr
, buf
, buf_size
);
1369 wake_up_interruptible(&iwm
->nonwifi_queue
);
1375 static int iwm_rx_handle_umac(struct iwm_priv
*iwm
, u8
*buf
,
1376 unsigned long buf_size
)
1380 unsigned long buf_offset
= 0;
1381 struct iwm_udma_in_hdr
*hdr
;
1384 * To allow for a more efficient bus usage, UMAC
1385 * messages are encapsulated into UDMA ones. This
1386 * way we can have several UMAC messages in one bus
1388 * A UDMA frame size is always aligned on 16 bytes,
1389 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1390 * word. This is how we parse a bus frame into several
1393 while (buf_offset
< buf_size
) {
1395 hdr
= (struct iwm_udma_in_hdr
*)(buf
+ buf_offset
);
1397 if (iwm_rx_check_udma_hdr(hdr
) < 0) {
1398 IWM_DBG_RX(iwm
, DBG
, "End of frame\n");
1402 op_code
= GET_VAL32(hdr
->cmd
, UMAC_HDI_IN_CMD_OPCODE
);
1404 IWM_DBG_RX(iwm
, DBG
, "Op code: 0x%x\n", op_code
);
1406 if (op_code
== UMAC_HDI_IN_OPCODE_WIFI
) {
1407 ret
|= iwm_rx_handle_wifi(iwm
, buf
+ buf_offset
,
1408 buf_size
- buf_offset
);
1409 } else if (op_code
< UMAC_HDI_IN_OPCODE_NONWIFI_MAX
) {
1410 if (GET_VAL32(hdr
->cmd
,
1411 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG
) !=
1412 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG
) {
1413 IWM_ERR(iwm
, "Incorrect hw signature\n");
1416 ret
|= iwm_rx_handle_nonwifi(iwm
, buf
+ buf_offset
,
1417 buf_size
- buf_offset
);
1419 IWM_ERR(iwm
, "Invalid RX opcode: 0x%x\n", op_code
);
1423 buf_offset
+= iwm_rx_resp_size(hdr
);
1429 int iwm_rx_handle(struct iwm_priv
*iwm
, u8
*buf
, unsigned long buf_size
)
1431 struct iwm_udma_in_hdr
*hdr
;
1433 hdr
= (struct iwm_udma_in_hdr
*)buf
;
1435 switch (le32_to_cpu(hdr
->cmd
)) {
1436 case UMAC_REBOOT_BARKER
:
1437 if (test_bit(IWM_STATUS_READY
, &iwm
->status
)) {
1438 IWM_ERR(iwm
, "Unexpected BARKER\n");
1440 schedule_work(&iwm
->reset_worker
);
1445 return iwm_notif_send(iwm
, NULL
, IWM_BARKER_REBOOT_NOTIFICATION
,
1446 IWM_SRC_UDMA
, buf
, buf_size
);
1447 case UMAC_ACK_BARKER
:
1448 return iwm_notif_send(iwm
, NULL
, IWM_ACK_BARKER_NOTIFICATION
,
1449 IWM_SRC_UDMA
, NULL
, 0);
1451 IWM_DBG_RX(iwm
, DBG
, "Received cmd: 0x%x\n", hdr
->cmd
);
1452 return iwm_rx_handle_umac(iwm
, buf
, buf_size
);
1458 static const iwm_handler iwm_umac_handlers
[] =
1460 [UMAC_NOTIFY_OPCODE_ERROR
] = iwm_ntf_error
,
1461 [UMAC_NOTIFY_OPCODE_ALIVE
] = iwm_ntf_umac_alive
,
1462 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE
] = iwm_ntf_init_complete
,
1463 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS
] = iwm_ntf_wifi_status
,
1464 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER
] = iwm_ntf_mlme
,
1465 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC
] = iwm_ntf_tx_credit_update
,
1466 [UMAC_NOTIFY_OPCODE_RX_TICKET
] = iwm_ntf_rx_ticket
,
1467 [UMAC_CMD_OPCODE_RESET
] = iwm_ntf_umac_reset
,
1468 [UMAC_NOTIFY_OPCODE_STATS
] = iwm_ntf_statistics
,
1469 [UMAC_CMD_OPCODE_EEPROM_PROXY
] = iwm_ntf_eeprom_proxy
,
1470 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST
] = iwm_ntf_channel_info_list
,
1471 [UMAC_CMD_OPCODE_STOP_RESUME_STA_TX
] = iwm_ntf_stop_resume_tx
,
1472 [REPLY_RX_MPDU_CMD
] = iwm_ntf_rx_packet
,
1473 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER
] = iwm_ntf_wifi_if_wrapper
,
1476 static const iwm_handler iwm_lmac_handlers
[] =
1478 [REPLY_TX
] = iwm_ntf_tx
,
1479 [REPLY_ALIVE
] = iwm_ntf_lmac_version
,
1480 [CALIBRATION_RES_NOTIFICATION
] = iwm_ntf_calib_res
,
1481 [CALIBRATION_COMPLETE_NOTIFICATION
] = iwm_ntf_calib_complete
,
1482 [CALIBRATION_CFG_CMD
] = iwm_ntf_calib_cfg
,
1483 [REPLY_RX_MPDU_CMD
] = iwm_ntf_rx_packet
,
1484 [CARD_STATE_NOTIFICATION
] = iwm_ntf_card_state
,
1487 void iwm_rx_setup_handlers(struct iwm_priv
*iwm
)
1489 iwm
->umac_handlers
= (iwm_handler
*) iwm_umac_handlers
;
1490 iwm
->lmac_handlers
= (iwm_handler
*) iwm_lmac_handlers
;
1493 static void iwm_remove_iv(struct sk_buff
*skb
, u32 hdr_total_len
)
1495 struct ieee80211_hdr
*hdr
;
1496 unsigned int hdr_len
;
1498 hdr
= (struct ieee80211_hdr
*)skb
->data
;
1500 if (!ieee80211_has_protected(hdr
->frame_control
))
1503 hdr_len
= ieee80211_hdrlen(hdr
->frame_control
);
1504 if (hdr_total_len
<= hdr_len
)
1507 memmove(skb
->data
+ (hdr_total_len
- hdr_len
), skb
->data
, hdr_len
);
1508 skb_pull(skb
, (hdr_total_len
- hdr_len
));
1511 static void iwm_rx_adjust_packet(struct iwm_priv
*iwm
,
1512 struct iwm_rx_packet
*packet
,
1513 struct iwm_rx_ticket_node
*ticket_node
)
1515 u32 payload_offset
= 0, payload_len
;
1516 struct iwm_rx_ticket
*ticket
= ticket_node
->ticket
;
1517 struct iwm_rx_mpdu_hdr
*mpdu_hdr
;
1518 struct ieee80211_hdr
*hdr
;
1520 mpdu_hdr
= (struct iwm_rx_mpdu_hdr
*)packet
->skb
->data
;
1521 payload_offset
+= sizeof(struct iwm_rx_mpdu_hdr
);
1522 /* Padding is 0 or 2 bytes */
1523 payload_len
= le16_to_cpu(mpdu_hdr
->len
) +
1524 (le16_to_cpu(ticket
->flags
) & IWM_RX_TICKET_PAD_SIZE_MSK
);
1525 payload_len
-= ticket
->tail_len
;
1527 IWM_DBG_RX(iwm
, DBG
, "Packet adjusted, len:%d, offset:%d, "
1528 "ticket offset:%d ticket tail len:%d\n",
1529 payload_len
, payload_offset
, ticket
->payload_offset
,
1532 IWM_HEXDUMP(iwm
, DBG
, RX
, "RAW: ", packet
->skb
->data
, packet
->skb
->len
);
1534 skb_pull(packet
->skb
, payload_offset
);
1535 skb_trim(packet
->skb
, payload_len
);
1537 iwm_remove_iv(packet
->skb
, ticket
->payload_offset
);
1539 hdr
= (struct ieee80211_hdr
*) packet
->skb
->data
;
1540 if (ieee80211_is_data_qos(hdr
->frame_control
)) {
1541 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1542 * to the qos_ctl field in IEEE 802.11 headers. */
1543 memmove(packet
->skb
->data
+ IEEE80211_QOS_CTL_LEN
+ 2,
1545 ieee80211_hdrlen(hdr
->frame_control
) -
1546 IEEE80211_QOS_CTL_LEN
);
1547 hdr
= (struct ieee80211_hdr
*) skb_pull(packet
->skb
,
1548 IEEE80211_QOS_CTL_LEN
+ 2);
1549 hdr
->frame_control
&= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA
);
1552 IWM_HEXDUMP(iwm
, DBG
, RX
, "ADJUSTED: ",
1553 packet
->skb
->data
, packet
->skb
->len
);
1556 static void classify8023(struct sk_buff
*skb
)
1558 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1560 if (ieee80211_is_data_qos(hdr
->frame_control
)) {
1561 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
1562 /* frame has qos control */
1563 skb
->priority
= *qc
& IEEE80211_QOS_CTL_TID_MASK
;
1569 static void iwm_rx_process_amsdu(struct iwm_priv
*iwm
, struct sk_buff
*skb
)
1571 struct wireless_dev
*wdev
= iwm_to_wdev(iwm
);
1572 struct net_device
*ndev
= iwm_to_ndev(iwm
);
1573 struct sk_buff_head list
;
1574 struct sk_buff
*frame
;
1576 IWM_HEXDUMP(iwm
, DBG
, RX
, "A-MSDU: ", skb
->data
, skb
->len
);
1578 __skb_queue_head_init(&list
);
1579 ieee80211_amsdu_to_8023s(skb
, &list
, ndev
->dev_addr
, wdev
->iftype
, 0,
1582 while ((frame
= __skb_dequeue(&list
))) {
1583 ndev
->stats
.rx_packets
++;
1584 ndev
->stats
.rx_bytes
+= frame
->len
;
1586 frame
->protocol
= eth_type_trans(frame
, ndev
);
1587 frame
->ip_summed
= CHECKSUM_NONE
;
1588 memset(frame
->cb
, 0, sizeof(frame
->cb
));
1590 if (netif_rx_ni(frame
) == NET_RX_DROP
) {
1591 IWM_ERR(iwm
, "Packet dropped\n");
1592 ndev
->stats
.rx_dropped
++;
1597 static void iwm_rx_process_packet(struct iwm_priv
*iwm
,
1598 struct iwm_rx_packet
*packet
,
1599 struct iwm_rx_ticket_node
*ticket_node
)
1602 struct sk_buff
*skb
= packet
->skb
;
1603 struct wireless_dev
*wdev
= iwm_to_wdev(iwm
);
1604 struct net_device
*ndev
= iwm_to_ndev(iwm
);
1606 IWM_DBG_RX(iwm
, DBG
, "Processing packet ID %d\n", packet
->id
);
1608 switch (le16_to_cpu(ticket_node
->ticket
->action
)) {
1609 case IWM_RX_TICKET_RELEASE
:
1610 IWM_DBG_RX(iwm
, DBG
, "RELEASE packet\n");
1612 iwm_rx_adjust_packet(iwm
, packet
, ticket_node
);
1613 skb
->dev
= iwm_to_ndev(iwm
);
1616 if (le16_to_cpu(ticket_node
->ticket
->flags
) &
1617 IWM_RX_TICKET_AMSDU_MSK
) {
1618 iwm_rx_process_amsdu(iwm
, skb
);
1622 ret
= ieee80211_data_to_8023(skb
, ndev
->dev_addr
, wdev
->iftype
);
1624 IWM_DBG_RX(iwm
, DBG
, "Couldn't convert 802.11 header - "
1626 kfree_skb(packet
->skb
);
1630 IWM_HEXDUMP(iwm
, DBG
, RX
, "802.3: ", skb
->data
, skb
->len
);
1632 ndev
->stats
.rx_packets
++;
1633 ndev
->stats
.rx_bytes
+= skb
->len
;
1635 skb
->protocol
= eth_type_trans(skb
, ndev
);
1636 skb
->ip_summed
= CHECKSUM_NONE
;
1637 memset(skb
->cb
, 0, sizeof(skb
->cb
));
1639 if (netif_rx_ni(skb
) == NET_RX_DROP
) {
1640 IWM_ERR(iwm
, "Packet dropped\n");
1641 ndev
->stats
.rx_dropped
++;
1644 case IWM_RX_TICKET_DROP
:
1645 IWM_DBG_RX(iwm
, DBG
, "DROP packet: 0x%x\n",
1646 le16_to_cpu(ticket_node
->ticket
->flags
));
1647 kfree_skb(packet
->skb
);
1650 IWM_ERR(iwm
, "Unknown ticket action: %d\n",
1651 le16_to_cpu(ticket_node
->ticket
->action
));
1652 kfree_skb(packet
->skb
);
1656 iwm_rx_ticket_node_free(ticket_node
);
1660 * Rx data processing:
1662 * We're receiving Rx packet from the LMAC, and Rx ticket from
1664 * To forward a target data packet upstream (i.e. to the
1665 * kernel network stack), we must have received an Rx ticket
1666 * that tells us we're allowed to release this packet (ticket
1667 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1668 * among other things, where valid data actually starts in the Rx
1671 void iwm_rx_worker(struct work_struct
*work
)
1673 struct iwm_priv
*iwm
;
1674 struct iwm_rx_ticket_node
*ticket
, *next
;
1676 iwm
= container_of(work
, struct iwm_priv
, rx_worker
);
1679 * We go through the tickets list and if there is a pending
1680 * packet for it, we push it upstream.
1681 * We stop whenever a ticket is missing its packet, as we're
1682 * supposed to send the packets in order.
1684 spin_lock(&iwm
->ticket_lock
);
1685 list_for_each_entry_safe(ticket
, next
, &iwm
->rx_tickets
, node
) {
1686 struct iwm_rx_packet
*packet
=
1687 iwm_rx_packet_get(iwm
, le16_to_cpu(ticket
->ticket
->id
));
1690 IWM_DBG_RX(iwm
, DBG
, "Skip rx_work: Wait for ticket %d "
1691 "to be handled first\n",
1692 le16_to_cpu(ticket
->ticket
->id
));
1696 list_del(&ticket
->node
);
1697 iwm_rx_process_packet(iwm
, packet
, ticket
);
1699 spin_unlock(&iwm
->ticket_lock
);