1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
64 #include <linux/etherdevice.h>
65 #include <net/mac80211.h>
68 #include "iwl-eeprom-parse.h"
69 #include "fw-api-scan.h"
71 #define IWL_PLCP_QUIET_THRESH 1
72 #define IWL_ACTIVE_QUIET_TIME 10
73 #define LONG_OUT_TIME_PERIOD 600
74 #define SHORT_OUT_TIME_PERIOD 200
75 #define SUSPEND_TIME_PERIOD 100
77 static inline __le16
iwl_mvm_scan_rx_chain(struct iwl_mvm
*mvm
)
82 if (mvm
->scan_rx_ant
!= ANT_NONE
)
83 rx_ant
= mvm
->scan_rx_ant
;
85 rx_ant
= iwl_fw_valid_rx_ant(mvm
->fw
);
86 rx_chain
= rx_ant
<< PHY_RX_CHAIN_VALID_POS
;
87 rx_chain
|= rx_ant
<< PHY_RX_CHAIN_FORCE_MIMO_SEL_POS
;
88 rx_chain
|= rx_ant
<< PHY_RX_CHAIN_FORCE_SEL_POS
;
89 rx_chain
|= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS
;
90 return cpu_to_le16(rx_chain
);
93 static inline __le32
iwl_mvm_scan_max_out_time(struct ieee80211_vif
*vif
,
94 u32 flags
, bool is_assoc
)
98 if (flags
& NL80211_SCAN_FLAG_LOW_PRIORITY
)
99 return cpu_to_le32(ieee80211_tu_to_usec(SHORT_OUT_TIME_PERIOD
));
100 return cpu_to_le32(ieee80211_tu_to_usec(LONG_OUT_TIME_PERIOD
));
103 static inline __le32
iwl_mvm_scan_suspend_time(struct ieee80211_vif
*vif
,
108 return cpu_to_le32(ieee80211_tu_to_usec(SUSPEND_TIME_PERIOD
));
112 iwl_mvm_scan_rxon_flags(struct cfg80211_scan_request
*req
)
114 if (req
->channels
[0]->band
== IEEE80211_BAND_2GHZ
)
115 return cpu_to_le32(PHY_BAND_24
);
117 return cpu_to_le32(PHY_BAND_5
);
121 iwl_mvm_scan_rate_n_flags(struct iwl_mvm
*mvm
, enum ieee80211_band band
,
126 mvm
->scan_last_antenna_idx
=
127 iwl_mvm_next_antenna(mvm
, iwl_fw_valid_tx_ant(mvm
->fw
),
128 mvm
->scan_last_antenna_idx
);
129 tx_ant
= BIT(mvm
->scan_last_antenna_idx
) << RATE_MCS_ANT_POS
;
131 if (band
== IEEE80211_BAND_2GHZ
&& !no_cck
)
132 return cpu_to_le32(IWL_RATE_1M_PLCP
| RATE_MCS_CCK_MSK
|
135 return cpu_to_le32(IWL_RATE_6M_PLCP
| tx_ant
);
139 * We insert the SSIDs in an inverted order, because the FW will
140 * invert it back. The most prioritized SSID, which is first in the
141 * request list, is not copied here, but inserted directly to the probe
144 static void iwl_mvm_scan_fill_ssids(struct iwl_scan_cmd
*cmd
,
145 struct cfg80211_scan_request
*req
,
150 for (req_idx
= req
->n_ssids
- 1, fw_idx
= 0; req_idx
>= first
;
151 req_idx
--, fw_idx
++) {
152 cmd
->direct_scan
[fw_idx
].id
= WLAN_EID_SSID
;
153 cmd
->direct_scan
[fw_idx
].len
= req
->ssids
[req_idx
].ssid_len
;
154 memcpy(cmd
->direct_scan
[fw_idx
].ssid
,
155 req
->ssids
[req_idx
].ssid
,
156 req
->ssids
[req_idx
].ssid_len
);
161 * If req->n_ssids > 0, it means we should do an active scan.
162 * In case of active scan w/o directed scan, we receive a zero-length SSID
163 * just to notify that this scan is active and not passive.
164 * In order to notify the FW of the number of SSIDs we wish to scan (including
165 * the zero-length one), we need to set the corresponding bits in chan->type,
166 * one for each SSID, and set the active bit (first). If the first SSID is
167 * already included in the probe template, so we need to set only
168 * req->n_ssids - 1 bits in addition to the first bit.
170 static u16
iwl_mvm_get_active_dwell(enum ieee80211_band band
, int n_ssids
)
172 if (band
== IEEE80211_BAND_2GHZ
)
173 return 30 + 3 * (n_ssids
+ 1);
174 return 20 + 2 * (n_ssids
+ 1);
177 static u16
iwl_mvm_get_passive_dwell(enum ieee80211_band band
)
179 return band
== IEEE80211_BAND_2GHZ
? 100 + 20 : 100 + 10;
182 static void iwl_mvm_scan_fill_channels(struct iwl_scan_cmd
*cmd
,
183 struct cfg80211_scan_request
*req
,
186 u16 passive_dwell
= iwl_mvm_get_passive_dwell(req
->channels
[0]->band
);
187 u16 active_dwell
= iwl_mvm_get_active_dwell(req
->channels
[0]->band
,
189 struct iwl_scan_channel
*chan
= (struct iwl_scan_channel
*)
190 (cmd
->data
+ le16_to_cpu(cmd
->tx_cmd
.len
));
192 int type
= BIT(req
->n_ssids
) - 1;
195 type
|= BIT(req
->n_ssids
);
197 for (i
= 0; i
< cmd
->channel_count
; i
++) {
198 chan
->channel
= cpu_to_le16(req
->channels
[i
]->hw_value
);
199 chan
->type
= cpu_to_le32(type
);
200 if (req
->channels
[i
]->flags
& IEEE80211_CHAN_NO_IR
)
201 chan
->type
&= cpu_to_le32(~SCAN_CHANNEL_TYPE_ACTIVE
);
202 chan
->active_dwell
= cpu_to_le16(active_dwell
);
203 chan
->passive_dwell
= cpu_to_le16(passive_dwell
);
204 chan
->iteration_count
= cpu_to_le16(1);
210 * Fill in probe request with the following parameters:
211 * TA is our vif HW address, which mac80211 ensures we have.
212 * Packet is broadcasted, so this is both SA and DA.
213 * The probe request IE is made out of two: first comes the most prioritized
214 * SSID if a directed scan is requested. Second comes whatever extra
215 * information was given to us as the scan request IE.
217 static u16
iwl_mvm_fill_probe_req(struct ieee80211_mgmt
*frame
, const u8
*ta
,
218 int n_ssids
, const u8
*ssid
, int ssid_len
,
219 const u8
*ie
, int ie_len
,
225 /* Make sure there is enough space for the probe request,
226 * two mandatory IEs and the data */
231 frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_PROBE_REQ
);
232 eth_broadcast_addr(frame
->da
);
233 memcpy(frame
->sa
, ta
, ETH_ALEN
);
234 eth_broadcast_addr(frame
->bssid
);
239 /* for passive scans, no need to fill anything */
243 /* points to the payload of the request */
244 pos
= &frame
->u
.probe_req
.variable
[0];
246 /* fill in our SSID IE */
247 left
-= ssid_len
+ 2;
250 *pos
++ = WLAN_EID_SSID
;
252 if (ssid
&& ssid_len
) { /* ssid_len may be == 0 even if ssid is valid */
253 memcpy(pos
, ssid
, ssid_len
);
259 if (WARN_ON(left
< ie_len
))
263 memcpy(pos
, ie
, ie_len
);
270 static void iwl_mvm_vif_assoc_iterator(void *data
, u8
*mac
,
271 struct ieee80211_vif
*vif
)
273 bool *is_assoc
= data
;
275 if (vif
->bss_conf
.assoc
)
279 int iwl_mvm_scan_request(struct iwl_mvm
*mvm
,
280 struct ieee80211_vif
*vif
,
281 struct cfg80211_scan_request
*req
)
283 struct iwl_host_cmd hcmd
= {
284 .id
= SCAN_REQUEST_CMD
,
286 .data
= { mvm
->scan_cmd
, },
288 .dataflags
= { IWL_HCMD_DFL_NOCOPY
, },
290 struct iwl_scan_cmd
*cmd
= mvm
->scan_cmd
;
291 bool is_assoc
= false;
296 bool basic_ssid
= !(mvm
->fw
->ucode_capa
.flags
&
297 IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID
);
299 lockdep_assert_held(&mvm
->mutex
);
300 BUG_ON(mvm
->scan_cmd
== NULL
);
302 IWL_DEBUG_SCAN(mvm
, "Handling mac80211 scan request\n");
303 mvm
->scan_status
= IWL_MVM_SCAN_OS
;
304 memset(cmd
, 0, sizeof(struct iwl_scan_cmd
) +
305 mvm
->fw
->ucode_capa
.max_probe_length
+
306 (MAX_NUM_SCAN_CHANNELS
* sizeof(struct iwl_scan_channel
)));
307 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
308 IEEE80211_IFACE_ITER_NORMAL
,
309 iwl_mvm_vif_assoc_iterator
,
311 cmd
->channel_count
= (u8
)req
->n_channels
;
312 cmd
->quiet_time
= cpu_to_le16(IWL_ACTIVE_QUIET_TIME
);
313 cmd
->quiet_plcp_th
= cpu_to_le16(IWL_PLCP_QUIET_THRESH
);
314 cmd
->rxchain_sel_flags
= iwl_mvm_scan_rx_chain(mvm
);
315 cmd
->max_out_time
= iwl_mvm_scan_max_out_time(vif
, req
->flags
,
317 cmd
->suspend_time
= iwl_mvm_scan_suspend_time(vif
, is_assoc
);
318 cmd
->rxon_flags
= iwl_mvm_scan_rxon_flags(req
);
319 cmd
->filter_flags
= cpu_to_le32(MAC_FILTER_ACCEPT_GRP
|
320 MAC_FILTER_IN_BEACON
);
322 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
)
323 cmd
->type
= cpu_to_le32(SCAN_TYPE_DISCOVERY_FORCED
);
325 cmd
->type
= cpu_to_le32(SCAN_TYPE_FORCED
);
327 cmd
->repeats
= cpu_to_le32(1);
330 * If the user asked for passive scan, don't change to active scan if
331 * you see any activity on the channel - remain passive.
333 if (req
->n_ssids
> 0) {
334 cmd
->passive2active
= cpu_to_le16(1);
335 cmd
->scan_flags
|= SCAN_FLAGS_PASSIVE2ACTIVE
;
337 ssid
= req
->ssids
[0].ssid
;
338 ssid_len
= req
->ssids
[0].ssid_len
;
341 cmd
->passive2active
= 0;
342 cmd
->scan_flags
&= ~SCAN_FLAGS_PASSIVE2ACTIVE
;
345 iwl_mvm_scan_fill_ssids(cmd
, req
, basic_ssid
? 1 : 0);
347 cmd
->tx_cmd
.tx_flags
= cpu_to_le32(TX_CMD_FLG_SEQ_CTL
|
349 cmd
->tx_cmd
.sta_id
= mvm
->aux_sta
.sta_id
;
350 cmd
->tx_cmd
.life_time
= cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE
);
351 cmd
->tx_cmd
.rate_n_flags
=
352 iwl_mvm_scan_rate_n_flags(mvm
, req
->channels
[0]->band
,
356 cpu_to_le16(iwl_mvm_fill_probe_req(
357 (struct ieee80211_mgmt
*)cmd
->data
,
359 req
->n_ssids
, ssid
, ssid_len
,
360 req
->ie
, req
->ie_len
,
361 mvm
->fw
->ucode_capa
.max_probe_length
));
363 iwl_mvm_scan_fill_channels(cmd
, req
, basic_ssid
);
365 cmd
->len
= cpu_to_le16(sizeof(struct iwl_scan_cmd
) +
366 le16_to_cpu(cmd
->tx_cmd
.len
) +
367 (cmd
->channel_count
* sizeof(struct iwl_scan_channel
)));
368 hcmd
.len
[0] = le16_to_cpu(cmd
->len
);
370 status
= SCAN_RESPONSE_OK
;
371 ret
= iwl_mvm_send_cmd_status(mvm
, &hcmd
, &status
);
372 if (!ret
&& status
== SCAN_RESPONSE_OK
) {
373 IWL_DEBUG_SCAN(mvm
, "Scan request was sent successfully\n");
376 * If the scan failed, it usually means that the FW was unable
377 * to allocate the time events. Warn on it, but maybe we
378 * should try to send the command again with different params.
380 IWL_ERR(mvm
, "Scan failed! status 0x%x ret %d\n",
382 mvm
->scan_status
= IWL_MVM_SCAN_NONE
;
388 int iwl_mvm_rx_scan_response(struct iwl_mvm
*mvm
, struct iwl_rx_cmd_buffer
*rxb
,
389 struct iwl_device_cmd
*cmd
)
391 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
392 struct iwl_cmd_response
*resp
= (void *)pkt
->data
;
394 IWL_DEBUG_SCAN(mvm
, "Scan response received. status 0x%x\n",
395 le32_to_cpu(resp
->status
));
399 int iwl_mvm_rx_scan_complete(struct iwl_mvm
*mvm
, struct iwl_rx_cmd_buffer
*rxb
,
400 struct iwl_device_cmd
*cmd
)
402 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
403 struct iwl_scan_complete_notif
*notif
= (void *)pkt
->data
;
405 IWL_DEBUG_SCAN(mvm
, "Scan complete: status=0x%x scanned channels=%d\n",
406 notif
->status
, notif
->scanned_channels
);
408 mvm
->scan_status
= IWL_MVM_SCAN_NONE
;
409 ieee80211_scan_completed(mvm
->hw
, notif
->status
!= SCAN_COMP_STATUS_OK
);
414 int iwl_mvm_rx_sched_scan_results(struct iwl_mvm
*mvm
,
415 struct iwl_rx_cmd_buffer
*rxb
,
416 struct iwl_device_cmd
*cmd
)
418 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
419 struct iwl_sched_scan_results
*notif
= (void *)pkt
->data
;
421 if (notif
->client_bitmap
& SCAN_CLIENT_SCHED_SCAN
) {
422 IWL_DEBUG_SCAN(mvm
, "Scheduled scan results\n");
423 ieee80211_sched_scan_results(mvm
->hw
);
429 static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data
*notif_wait
,
430 struct iwl_rx_packet
*pkt
, void *data
)
432 struct iwl_mvm
*mvm
=
433 container_of(notif_wait
, struct iwl_mvm
, notif_wait
);
434 struct iwl_scan_complete_notif
*notif
;
437 switch (pkt
->hdr
.cmd
) {
439 resp
= (void *)pkt
->data
;
440 if (*resp
== CAN_ABORT_STATUS
) {
442 "Scan can be aborted, wait until completion\n");
447 * If scan cannot be aborted, it means that we had a
448 * SCAN_COMPLETE_NOTIFICATION in the pipe and it called
449 * ieee80211_scan_completed already.
451 IWL_DEBUG_SCAN(mvm
, "Scan cannot be aborted, exit now: %d\n",
455 case SCAN_COMPLETE_NOTIFICATION
:
456 notif
= (void *)pkt
->data
;
457 IWL_DEBUG_SCAN(mvm
, "Scan aborted: status 0x%x\n",
467 void iwl_mvm_cancel_scan(struct iwl_mvm
*mvm
)
469 struct iwl_notification_wait wait_scan_abort
;
470 static const u8 scan_abort_notif
[] = { SCAN_ABORT_CMD
,
471 SCAN_COMPLETE_NOTIFICATION
};
474 if (mvm
->scan_status
== IWL_MVM_SCAN_NONE
)
477 if (iwl_mvm_is_radio_killed(mvm
)) {
478 ieee80211_scan_completed(mvm
->hw
, true);
479 mvm
->scan_status
= IWL_MVM_SCAN_NONE
;
483 iwl_init_notification_wait(&mvm
->notif_wait
, &wait_scan_abort
,
485 ARRAY_SIZE(scan_abort_notif
),
486 iwl_mvm_scan_abort_notif
, NULL
);
488 ret
= iwl_mvm_send_cmd_pdu(mvm
, SCAN_ABORT_CMD
, CMD_SYNC
, 0, NULL
);
490 IWL_ERR(mvm
, "Couldn't send SCAN_ABORT_CMD: %d\n", ret
);
491 /* mac80211's state will be cleaned in the fw_restart flow */
492 goto out_remove_notif
;
495 ret
= iwl_wait_notification(&mvm
->notif_wait
, &wait_scan_abort
, 1 * HZ
);
497 IWL_ERR(mvm
, "%s - failed on timeout\n", __func__
);
502 iwl_remove_notification(&mvm
->notif_wait
, &wait_scan_abort
);
505 int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm
*mvm
,
506 struct iwl_rx_cmd_buffer
*rxb
,
507 struct iwl_device_cmd
*cmd
)
509 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
510 struct iwl_scan_offload_complete
*scan_notif
= (void *)pkt
->data
;
512 IWL_DEBUG_SCAN(mvm
, "Scheduled scan completed, status %s\n",
513 scan_notif
->status
== IWL_SCAN_OFFLOAD_COMPLETED
?
514 "completed" : "aborted");
516 mvm
->scan_status
= IWL_MVM_SCAN_NONE
;
517 ieee80211_sched_scan_stopped(mvm
->hw
);
522 static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm
*mvm
,
523 struct ieee80211_vif
*vif
,
524 struct ieee80211_sched_scan_ies
*ies
,
525 enum ieee80211_band band
,
526 struct iwl_tx_cmd
*cmd
,
531 cmd
->tx_flags
= cpu_to_le32(TX_CMD_FLG_SEQ_CTL
);
532 cmd
->life_time
= cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE
);
533 cmd
->sta_id
= mvm
->aux_sta
.sta_id
;
535 cmd
->rate_n_flags
= iwl_mvm_scan_rate_n_flags(mvm
, band
, false);
537 cmd_len
= iwl_mvm_fill_probe_req((struct ieee80211_mgmt
*)data
,
540 ies
->ie
[band
], ies
->len
[band
],
541 SCAN_OFFLOAD_PROBE_REQ_SIZE
);
542 cmd
->len
= cpu_to_le16(cmd_len
);
545 static void iwl_build_scan_cmd(struct iwl_mvm
*mvm
,
546 struct ieee80211_vif
*vif
,
547 struct cfg80211_sched_scan_request
*req
,
548 struct iwl_scan_offload_cmd
*scan
)
550 bool is_assoc
= false;
552 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
553 IEEE80211_IFACE_ITER_NORMAL
,
554 iwl_mvm_vif_assoc_iterator
,
556 scan
->channel_count
=
557 mvm
->nvm_data
->bands
[IEEE80211_BAND_2GHZ
].n_channels
+
558 mvm
->nvm_data
->bands
[IEEE80211_BAND_5GHZ
].n_channels
;
559 scan
->quiet_time
= cpu_to_le16(IWL_ACTIVE_QUIET_TIME
);
560 scan
->quiet_plcp_th
= cpu_to_le16(IWL_PLCP_QUIET_THRESH
);
561 scan
->good_CRC_th
= IWL_GOOD_CRC_TH_DEFAULT
;
562 scan
->rx_chain
= iwl_mvm_scan_rx_chain(mvm
);
563 scan
->max_out_time
= iwl_mvm_scan_max_out_time(vif
, req
->flags
,
565 scan
->suspend_time
= iwl_mvm_scan_suspend_time(vif
, is_assoc
);
566 scan
->filter_flags
|= cpu_to_le32(MAC_FILTER_ACCEPT_GRP
|
567 MAC_FILTER_IN_BEACON
);
568 scan
->scan_type
= cpu_to_le32(SCAN_TYPE_BACKGROUND
);
569 scan
->rep_count
= cpu_to_le32(1);
572 static int iwl_ssid_exist(u8
*ssid
, u8 ssid_len
, struct iwl_ssid_ie
*ssid_list
)
576 for (i
= 0; i
< PROBE_OPTION_MAX
; i
++) {
577 if (!ssid_list
[i
].len
)
579 if (ssid_list
[i
].len
== ssid_len
&&
580 !memcmp(ssid_list
->ssid
, ssid
, ssid_len
))
586 static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request
*req
,
587 struct iwl_scan_offload_cmd
*scan
,
594 * copy SSIDs from match list.
595 * iwl_config_sched_scan_profiles() uses the order of these ssids to
598 for (i
= 0; i
< req
->n_match_sets
&& i
< PROBE_OPTION_MAX
; i
++) {
599 scan
->direct_scan
[i
].id
= WLAN_EID_SSID
;
600 scan
->direct_scan
[i
].len
= req
->match_sets
[i
].ssid
.ssid_len
;
601 memcpy(scan
->direct_scan
[i
].ssid
, req
->match_sets
[i
].ssid
.ssid
,
602 scan
->direct_scan
[i
].len
);
605 /* add SSIDs from scan SSID list */
607 for (j
= 0; j
< req
->n_ssids
&& i
< PROBE_OPTION_MAX
; j
++) {
608 index
= iwl_ssid_exist(req
->ssids
[j
].ssid
,
609 req
->ssids
[j
].ssid_len
,
612 if (!req
->ssids
[j
].ssid_len
)
614 scan
->direct_scan
[i
].id
= WLAN_EID_SSID
;
615 scan
->direct_scan
[i
].len
= req
->ssids
[j
].ssid_len
;
616 memcpy(scan
->direct_scan
[i
].ssid
, req
->ssids
[j
].ssid
,
617 scan
->direct_scan
[i
].len
);
618 *ssid_bitmap
|= BIT(i
+ 1);
621 *ssid_bitmap
|= BIT(index
+ 1);
626 static void iwl_build_channel_cfg(struct iwl_mvm
*mvm
,
627 struct cfg80211_sched_scan_request
*req
,
628 struct iwl_scan_channel_cfg
*channels
,
629 enum ieee80211_band band
,
630 int *head
, int *tail
,
633 struct ieee80211_supported_band
*s_band
;
634 int n_probes
= req
->n_ssids
;
635 int n_channels
= req
->n_channels
;
636 u8 active_dwell
, passive_dwell
;
641 * We have to configure all supported channels, even if we don't want to
642 * scan on them, but we have to send channels in the order that we want
643 * to scan. So add requested channels to head of the list and others to
646 active_dwell
= iwl_mvm_get_active_dwell(band
, n_probes
);
647 passive_dwell
= iwl_mvm_get_passive_dwell(band
);
648 s_band
= &mvm
->nvm_data
->bands
[band
];
650 for (i
= 0; i
< s_band
->n_channels
&& *head
<= *tail
; i
++) {
652 for (j
= 0; j
< n_channels
; j
++)
653 if (s_band
->channels
[i
].center_freq
==
654 req
->channels
[j
]->center_freq
) {
658 * Channels that came with the request will be
668 channels
->channel_number
[index
] =
669 cpu_to_le16(ieee80211_frequency_to_channel(
670 s_band
->channels
[i
].center_freq
));
671 channels
->dwell_time
[index
][0] = active_dwell
;
672 channels
->dwell_time
[index
][1] = passive_dwell
;
674 channels
->iter_count
[index
] = cpu_to_le16(1);
675 channels
->iter_interval
[index
] = 0;
677 if (!(s_band
->channels
[i
].flags
& IEEE80211_CHAN_NO_IR
))
678 channels
->type
[index
] |=
679 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE
);
681 channels
->type
[index
] |=
682 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL
);
684 channels
->type
[index
] |=
685 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL
);
687 if (s_band
->channels
[i
].flags
& IEEE80211_CHAN_NO_HT40
)
688 channels
->type
[index
] |=
689 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW
);
691 /* scan for all SSIDs from req->ssids */
692 channels
->type
[index
] |= cpu_to_le32(ssid_bitmap
);
696 int iwl_mvm_config_sched_scan(struct iwl_mvm
*mvm
,
697 struct ieee80211_vif
*vif
,
698 struct cfg80211_sched_scan_request
*req
,
699 struct ieee80211_sched_scan_ies
*ies
)
701 int supported_bands
= 0;
702 int band_2ghz
= mvm
->nvm_data
->bands
[IEEE80211_BAND_2GHZ
].n_channels
;
703 int band_5ghz
= mvm
->nvm_data
->bands
[IEEE80211_BAND_5GHZ
].n_channels
;
705 int tail
= band_2ghz
+ band_5ghz
;
710 struct iwl_scan_offload_cfg
*scan_cfg
;
711 struct iwl_host_cmd cmd
= {
712 .id
= SCAN_OFFLOAD_CONFIG_CMD
,
716 lockdep_assert_held(&mvm
->mutex
);
723 cmd_len
= sizeof(struct iwl_scan_offload_cfg
) +
724 supported_bands
* SCAN_OFFLOAD_PROBE_REQ_SIZE
;
726 scan_cfg
= kzalloc(cmd_len
, GFP_KERNEL
);
730 iwl_build_scan_cmd(mvm
, vif
, req
, &scan_cfg
->scan_cmd
);
731 scan_cfg
->scan_cmd
.len
= cpu_to_le16(cmd_len
);
733 iwl_scan_offload_build_ssid(req
, &scan_cfg
->scan_cmd
, &ssid_bitmap
);
734 /* build tx frames for supported bands */
736 iwl_scan_offload_build_tx_cmd(mvm
, vif
, ies
,
738 &scan_cfg
->scan_cmd
.tx_cmd
[0],
740 iwl_build_channel_cfg(mvm
, req
, &scan_cfg
->channel_cfg
,
741 IEEE80211_BAND_2GHZ
, &head
, &tail
,
745 iwl_scan_offload_build_tx_cmd(mvm
, vif
, ies
,
747 &scan_cfg
->scan_cmd
.tx_cmd
[1],
749 SCAN_OFFLOAD_PROBE_REQ_SIZE
);
750 iwl_build_channel_cfg(mvm
, req
, &scan_cfg
->channel_cfg
,
751 IEEE80211_BAND_5GHZ
, &head
, &tail
,
755 cmd
.data
[0] = scan_cfg
;
756 cmd
.len
[0] = cmd_len
;
757 cmd
.dataflags
[0] = IWL_HCMD_DFL_NOCOPY
;
759 IWL_DEBUG_SCAN(mvm
, "Sending scheduled scan config\n");
761 ret
= iwl_mvm_send_cmd(mvm
, &cmd
);
766 int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm
*mvm
,
767 struct cfg80211_sched_scan_request
*req
)
769 struct iwl_scan_offload_profile
*profile
;
770 struct iwl_scan_offload_profile_cfg
*profile_cfg
;
771 struct iwl_scan_offload_blacklist
*blacklist
;
772 struct iwl_host_cmd cmd
= {
773 .id
= SCAN_OFFLOAD_UPDATE_PROFILES_CMD
,
775 .len
[1] = sizeof(*profile_cfg
),
776 .dataflags
[0] = IWL_HCMD_DFL_NOCOPY
,
777 .dataflags
[1] = IWL_HCMD_DFL_NOCOPY
,
783 if (WARN_ON(req
->n_match_sets
> IWL_SCAN_MAX_PROFILES
))
786 if (mvm
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_SHORT_BL
)
787 blacklist_len
= IWL_SCAN_SHORT_BLACKLIST_LEN
;
789 blacklist_len
= IWL_SCAN_MAX_BLACKLIST_LEN
;
791 blacklist
= kzalloc(sizeof(*blacklist
) * blacklist_len
, GFP_KERNEL
);
795 profile_cfg
= kzalloc(sizeof(*profile_cfg
), GFP_KERNEL
);
801 cmd
.data
[0] = blacklist
;
802 cmd
.len
[0] = sizeof(*blacklist
) * blacklist_len
;
803 cmd
.data
[1] = profile_cfg
;
805 /* No blacklist configuration */
807 profile_cfg
->num_profiles
= req
->n_match_sets
;
808 profile_cfg
->active_clients
= SCAN_CLIENT_SCHED_SCAN
;
809 profile_cfg
->pass_match
= SCAN_CLIENT_SCHED_SCAN
;
810 profile_cfg
->match_notify
= SCAN_CLIENT_SCHED_SCAN
;
811 if (!req
->n_match_sets
|| !req
->match_sets
[0].ssid
.ssid_len
)
812 profile_cfg
->any_beacon_notify
= SCAN_CLIENT_SCHED_SCAN
;
814 for (i
= 0; i
< req
->n_match_sets
; i
++) {
815 profile
= &profile_cfg
->profiles
[i
];
816 profile
->ssid_index
= i
;
817 /* Support any cipher and auth algorithm */
818 profile
->unicast_cipher
= 0xff;
819 profile
->auth_alg
= 0xff;
820 profile
->network_type
= IWL_NETWORK_TYPE_ANY
;
821 profile
->band_selection
= IWL_SCAN_OFFLOAD_SELECT_ANY
;
822 profile
->client_bitmap
= SCAN_CLIENT_SCHED_SCAN
;
825 IWL_DEBUG_SCAN(mvm
, "Sending scheduled scan profile config\n");
827 ret
= iwl_mvm_send_cmd(mvm
, &cmd
);
835 int iwl_mvm_sched_scan_start(struct iwl_mvm
*mvm
,
836 struct cfg80211_sched_scan_request
*req
)
838 struct iwl_scan_offload_req scan_req
= {
839 .watchdog
= IWL_SCHED_SCAN_WATCHDOG
,
841 .schedule_line
[0].iterations
= IWL_FAST_SCHED_SCAN_ITERATIONS
,
842 .schedule_line
[0].delay
= req
->interval
/ 1000,
843 .schedule_line
[0].full_scan_mul
= 1,
845 .schedule_line
[1].iterations
= 0xff,
846 .schedule_line
[1].delay
= req
->interval
/ 1000,
847 .schedule_line
[1].full_scan_mul
= IWL_FULL_SCAN_MULTIPLIER
,
850 if (req
->n_match_sets
&& req
->match_sets
[0].ssid
.ssid_len
) {
852 "Sending scheduled scan with filtering, filter len %d\n",
856 "Sending Scheduled scan without filtering\n");
857 scan_req
.flags
|= cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_PASS_ALL
);
860 return iwl_mvm_send_cmd_pdu(mvm
, SCAN_OFFLOAD_REQUEST_CMD
, CMD_SYNC
,
861 sizeof(scan_req
), &scan_req
);
864 static int iwl_mvm_send_sched_scan_abort(struct iwl_mvm
*mvm
)
867 struct iwl_host_cmd cmd
= {
868 .id
= SCAN_OFFLOAD_ABORT_CMD
,
873 /* Exit instantly with error when device is not ready
874 * to receive scan abort command or it does not perform
875 * scheduled scan currently */
876 if (mvm
->scan_status
!= IWL_MVM_SCAN_SCHED
)
879 ret
= iwl_mvm_send_cmd_status(mvm
, &cmd
, &status
);
883 if (status
!= CAN_ABORT_STATUS
) {
885 * The scan abort will return 1 for success or
886 * 2 for "failure". A failure condition can be
887 * due to simply not being in an active scan which
888 * can occur if we send the scan abort before the
889 * microcode has notified us that a scan is completed.
891 IWL_DEBUG_SCAN(mvm
, "SCAN OFFLOAD ABORT ret %d.\n", status
);
898 void iwl_mvm_sched_scan_stop(struct iwl_mvm
*mvm
)
902 lockdep_assert_held(&mvm
->mutex
);
904 if (mvm
->scan_status
!= IWL_MVM_SCAN_SCHED
) {
905 IWL_DEBUG_SCAN(mvm
, "No offloaded scan to stop\n");
909 ret
= iwl_mvm_send_sched_scan_abort(mvm
);
911 IWL_DEBUG_SCAN(mvm
, "Send stop offload scan failed %d\n", ret
);
913 IWL_DEBUG_SCAN(mvm
, "Successfully sent stop offload scan\n");