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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
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. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
51368bf7 | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
9af91f46 | 9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
8ca151b5 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
8ca151b5 JB |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
51368bf7 | 34 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
9af91f46 | 35 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
65 | ||
66 | #include <linux/etherdevice.h> | |
67 | #include <net/mac80211.h> | |
68 | ||
69 | #include "mvm.h" | |
70 | #include "iwl-eeprom-parse.h" | |
71 | #include "fw-api-scan.h" | |
72 | ||
73 | #define IWL_PLCP_QUIET_THRESH 1 | |
74 | #define IWL_ACTIVE_QUIET_TIME 10 | |
a1ed4025 HD |
75 | #define IWL_DENSE_EBS_SCAN_RATIO 5 |
76 | #define IWL_SPARSE_EBS_SCAN_RATIO 1 | |
8a110d9b AB |
77 | |
78 | struct iwl_mvm_scan_params { | |
79 | u32 max_out_time; | |
80 | u32 suspend_time; | |
50df8a30 | 81 | bool passive_fragmented; |
f7b788b4 LC |
82 | u32 n_channels; |
83 | u32 delay; | |
84 | int n_ssids; | |
85 | struct cfg80211_ssid *ssids; | |
86 | struct ieee80211_channel **channels; | |
87 | u16 interval; /* interval between scans (in secs) */ | |
88 | u32 flags; | |
89 | u8 *mac_addr; | |
90 | u8 *mac_addr_mask; | |
91 | bool no_cck; | |
92 | bool pass_all; | |
93 | int n_match_sets; | |
94 | struct cfg80211_match_set *match_sets; | |
50df8a30 AB |
95 | struct _dwell { |
96 | u16 passive; | |
97 | u16 active; | |
190f1029 | 98 | u16 fragmented; |
50df8a30 | 99 | } dwell[IEEE80211_NUM_BANDS]; |
8a110d9b | 100 | }; |
8ca151b5 | 101 | |
d2496221 DS |
102 | enum iwl_umac_scan_uid_type { |
103 | IWL_UMAC_SCAN_UID_REG_SCAN = BIT(0), | |
104 | IWL_UMAC_SCAN_UID_SCHED_SCAN = BIT(1), | |
105 | IWL_UMAC_SCAN_UID_ALL = IWL_UMAC_SCAN_UID_REG_SCAN | | |
106 | IWL_UMAC_SCAN_UID_SCHED_SCAN, | |
107 | }; | |
108 | ||
109 | static int iwl_umac_scan_stop(struct iwl_mvm *mvm, | |
110 | enum iwl_umac_scan_uid_type type, bool notify); | |
111 | ||
112 | static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) | |
113 | { | |
114 | if (mvm->scan_rx_ant != ANT_NONE) | |
115 | return mvm->scan_rx_ant; | |
a0544272 | 116 | return iwl_mvm_get_valid_rx_ant(mvm); |
d2496221 DS |
117 | } |
118 | ||
8ca151b5 JB |
119 | static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) |
120 | { | |
121 | u16 rx_chain; | |
91b05d10 | 122 | u8 rx_ant; |
8ca151b5 | 123 | |
d2496221 | 124 | rx_ant = iwl_mvm_scan_rx_ant(mvm); |
8ca151b5 JB |
125 | rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
126 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; | |
127 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; | |
128 | rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; | |
129 | return cpu_to_le16(rx_chain); | |
130 | } | |
131 | ||
fb98be5e | 132 | static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band) |
8ca151b5 | 133 | { |
fb98be5e | 134 | if (band == IEEE80211_BAND_2GHZ) |
8ca151b5 JB |
135 | return cpu_to_le32(PHY_BAND_24); |
136 | else | |
137 | return cpu_to_le32(PHY_BAND_5); | |
138 | } | |
139 | ||
140 | static inline __le32 | |
141 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band, | |
142 | bool no_cck) | |
143 | { | |
144 | u32 tx_ant; | |
145 | ||
146 | mvm->scan_last_antenna_idx = | |
a0544272 | 147 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 JB |
148 | mvm->scan_last_antenna_idx); |
149 | tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; | |
150 | ||
151 | if (band == IEEE80211_BAND_2GHZ && !no_cck) | |
152 | return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | | |
153 | tx_ant); | |
154 | else | |
155 | return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); | |
156 | } | |
157 | ||
158 | /* | |
159 | * We insert the SSIDs in an inverted order, because the FW will | |
160 | * invert it back. The most prioritized SSID, which is first in the | |
161 | * request list, is not copied here, but inserted directly to the probe | |
162 | * request. | |
163 | */ | |
fb98be5e | 164 | static void iwl_mvm_scan_fill_ssids(struct iwl_ssid_ie *cmd_ssid, |
f7b788b4 | 165 | struct iwl_mvm_scan_params *params) |
8ca151b5 JB |
166 | { |
167 | int fw_idx, req_idx; | |
168 | ||
f7b788b4 | 169 | for (req_idx = params->n_ssids - 1, fw_idx = 0; req_idx >= 0; |
fe04e837 | 170 | req_idx--, fw_idx++) { |
fb98be5e | 171 | cmd_ssid[fw_idx].id = WLAN_EID_SSID; |
f7b788b4 | 172 | cmd_ssid[fw_idx].len = params->ssids[req_idx].ssid_len; |
fb98be5e | 173 | memcpy(cmd_ssid[fw_idx].ssid, |
f7b788b4 LC |
174 | params->ssids[req_idx].ssid, |
175 | params->ssids[req_idx].ssid_len); | |
8ca151b5 JB |
176 | } |
177 | } | |
178 | ||
179 | /* | |
180 | * If req->n_ssids > 0, it means we should do an active scan. | |
181 | * In case of active scan w/o directed scan, we receive a zero-length SSID | |
182 | * just to notify that this scan is active and not passive. | |
183 | * In order to notify the FW of the number of SSIDs we wish to scan (including | |
184 | * the zero-length one), we need to set the corresponding bits in chan->type, | |
20f1a5de DS |
185 | * one for each SSID, and set the active bit (first). If the first SSID is |
186 | * already included in the probe template, so we need to set only | |
187 | * req->n_ssids - 1 bits in addition to the first bit. | |
8ca151b5 | 188 | */ |
3cae0734 DS |
189 | static u16 iwl_mvm_get_active_dwell(struct iwl_mvm *mvm, |
190 | enum ieee80211_band band, int n_ssids) | |
8ca151b5 | 191 | { |
3cae0734 DS |
192 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BASIC_DWELL) |
193 | return 10; | |
8ca151b5 | 194 | if (band == IEEE80211_BAND_2GHZ) |
39745337 DS |
195 | return 20 + 3 * (n_ssids + 1); |
196 | return 10 + 2 * (n_ssids + 1); | |
8ca151b5 JB |
197 | } |
198 | ||
3cae0734 DS |
199 | static u16 iwl_mvm_get_passive_dwell(struct iwl_mvm *mvm, |
200 | enum ieee80211_band band) | |
8ca151b5 | 201 | { |
3cae0734 DS |
202 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BASIC_DWELL) |
203 | return 110; | |
8ca151b5 JB |
204 | return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10; |
205 | } | |
206 | ||
8a110d9b AB |
207 | static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
208 | struct ieee80211_vif *vif) | |
61f6325d | 209 | { |
8a110d9b | 210 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
c3f8d0a3 | 211 | int *global_cnt = data; |
61f6325d | 212 | |
1e2ebe0e DS |
213 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && |
214 | mvmvif->phy_ctxt->id < MAX_PHYS) | |
c3f8d0a3 | 215 | *global_cnt += 1; |
8a110d9b AB |
216 | } |
217 | ||
218 | static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm, | |
50df8a30 | 219 | struct ieee80211_vif *vif, |
ab480030 | 220 | int n_ssids, u32 flags, |
8a110d9b AB |
221 | struct iwl_mvm_scan_params *params) |
222 | { | |
c3f8d0a3 | 223 | int global_cnt = 0; |
50df8a30 | 224 | enum ieee80211_band band; |
2ce89cd6 | 225 | u8 frag_passive_dwell = 0; |
8a110d9b AB |
226 | |
227 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
228 | IEEE80211_IFACE_ITER_NORMAL, | |
229 | iwl_mvm_scan_condition_iterator, | |
c3f8d0a3 | 230 | &global_cnt); |
f7b788b4 LC |
231 | params->n_ssids = n_ssids; |
232 | params->flags = flags; | |
ef67f18d | 233 | |
c3f8d0a3 | 234 | if (!global_cnt) |
ef67f18d AB |
235 | goto not_bound; |
236 | ||
2ce89cd6 | 237 | params->suspend_time = 30; |
44e9cd7e | 238 | params->max_out_time = 120; |
ef67f18d AB |
239 | |
240 | if (iwl_mvm_low_latency(mvm)) { | |
2ce89cd6 DS |
241 | if (mvm->fw->ucode_capa.api[0] & |
242 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN) { | |
243 | params->suspend_time = 105; | |
c3f8d0a3 HD |
244 | /* |
245 | * If there is more than one active interface make | |
246 | * passive scan more fragmented. | |
247 | */ | |
ef17708e | 248 | frag_passive_dwell = 40; |
44e9cd7e | 249 | params->max_out_time = frag_passive_dwell; |
2ce89cd6 DS |
250 | } else { |
251 | params->suspend_time = 120; | |
252 | params->max_out_time = 120; | |
253 | } | |
254 | } | |
255 | ||
256 | if (frag_passive_dwell && (mvm->fw->ucode_capa.api[0] & | |
257 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { | |
258 | /* | |
259 | * P2P device scan should not be fragmented to avoid negative | |
260 | * impact on P2P device discovery. Configure max_out_time to be | |
261 | * equal to dwell time on passive channel. Take a longest | |
262 | * possible value, one that corresponds to 2GHz band | |
263 | */ | |
264 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
265 | u32 passive_dwell = | |
3cae0734 DS |
266 | iwl_mvm_get_passive_dwell(mvm, |
267 | IEEE80211_BAND_2GHZ); | |
2ce89cd6 DS |
268 | params->max_out_time = passive_dwell; |
269 | } else { | |
270 | params->passive_fragmented = true; | |
271 | } | |
50df8a30 | 272 | } |
8a110d9b | 273 | |
c1537664 LC |
274 | if ((flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && |
275 | (params->max_out_time > 200)) | |
ab480030 JB |
276 | params->max_out_time = 200; |
277 | ||
ef67f18d AB |
278 | not_bound: |
279 | ||
50df8a30 | 280 | for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) { |
2ce89cd6 | 281 | if (params->passive_fragmented) |
190f1029 DS |
282 | params->dwell[band].fragmented = frag_passive_dwell; |
283 | ||
284 | params->dwell[band].passive = iwl_mvm_get_passive_dwell(mvm, | |
285 | band); | |
3cae0734 | 286 | params->dwell[band].active = iwl_mvm_get_active_dwell(mvm, band, |
50df8a30 AB |
287 | n_ssids); |
288 | } | |
0616c62c LC |
289 | |
290 | IWL_DEBUG_SCAN(mvm, | |
291 | "scan parameters: max_out_time %d, suspend_time %d, passive_fragmented %d\n", | |
292 | params->max_out_time, params->suspend_time, | |
293 | params->passive_fragmented); | |
294 | IWL_DEBUG_SCAN(mvm, | |
295 | "dwell[IEEE80211_BAND_2GHZ]: passive %d, active %d, fragmented %d\n", | |
296 | params->dwell[IEEE80211_BAND_2GHZ].passive, | |
297 | params->dwell[IEEE80211_BAND_2GHZ].active, | |
298 | params->dwell[IEEE80211_BAND_2GHZ].fragmented); | |
299 | IWL_DEBUG_SCAN(mvm, | |
300 | "dwell[IEEE80211_BAND_5GHZ]: passive %d, active %d, fragmented %d\n", | |
301 | params->dwell[IEEE80211_BAND_5GHZ].passive, | |
302 | params->dwell[IEEE80211_BAND_5GHZ].active, | |
303 | params->dwell[IEEE80211_BAND_5GHZ].fragmented); | |
61f6325d HD |
304 | } |
305 | ||
73897bd1 AO |
306 | static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
307 | { | |
308 | /* require rrm scan whenever the fw supports it */ | |
309 | return mvm->fw->ucode_capa.capa[0] & | |
310 | IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT; | |
311 | } | |
312 | ||
999d2568 | 313 | static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) |
48849a41 AO |
314 | { |
315 | int max_probe_len; | |
316 | ||
1f940386 | 317 | max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; |
48849a41 AO |
318 | |
319 | /* we create the 802.11 header and SSID element */ | |
320 | max_probe_len -= 24 + 2; | |
321 | ||
66dc5272 AO |
322 | /* DS parameter set element is added on 2.4GHZ band if required */ |
323 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
324 | max_probe_len -= 3; | |
325 | ||
48849a41 AO |
326 | return max_probe_len; |
327 | } | |
328 | ||
999d2568 | 329 | int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) |
48849a41 | 330 | { |
999d2568 | 331 | int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); |
48849a41 | 332 | |
48849a41 AO |
333 | /* TODO: [BUG] This function should return the maximum allowed size of |
334 | * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs | |
335 | * in the same command. So the correct implementation of this function | |
336 | * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan | |
337 | * command has only 512 bytes and it would leave us with about 240 | |
338 | * bytes for scan IEs, which is clearly not enough. So meanwhile | |
339 | * we will report an incorrect value. This may result in a failure to | |
340 | * issue a scan in unified_scan_lmac and unified_sched_scan_lmac | |
341 | * functions with -ENOBUFS, if a large enough probe will be provided. | |
342 | */ | |
343 | return max_ie_len; | |
344 | } | |
345 | ||
e5d74646 AB |
346 | int iwl_mvm_rx_scan_offload_iter_complete_notif(struct iwl_mvm *mvm, |
347 | struct iwl_rx_cmd_buffer *rxb, | |
348 | struct iwl_device_cmd *cmd) | |
349 | { | |
350 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1083fd73 | 351 | struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; |
e5d74646 AB |
352 | |
353 | IWL_DEBUG_SCAN(mvm, | |
354 | "Scan offload iteration complete: status=0x%x scanned channels=%d\n", | |
355 | notif->status, notif->scanned_channels); | |
356 | return 0; | |
357 | } | |
358 | ||
fb98be5e DS |
359 | int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm, |
360 | struct iwl_rx_cmd_buffer *rxb, | |
361 | struct iwl_device_cmd *cmd) | |
35a000b7 | 362 | { |
d2496221 DS |
363 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); |
364 | ieee80211_sched_scan_results(mvm->hw); | |
35a000b7 DS |
365 | |
366 | return 0; | |
367 | } | |
368 | ||
35a000b7 DS |
369 | int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm, |
370 | struct iwl_rx_cmd_buffer *rxb, | |
371 | struct iwl_device_cmd *cmd) | |
372 | { | |
373 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
9af91f46 LC |
374 | struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; |
375 | bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); | |
376 | bool ebs_successful = (scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS); | |
fb98be5e | 377 | |
a6623e84 JB |
378 | /* scan status must be locked for proper checking */ |
379 | lockdep_assert_held(&mvm->mutex); | |
380 | ||
9af91f46 LC |
381 | /* We first check if we were stopping a scan, in which case we |
382 | * just clear the stopping flag. Then we check if it was a | |
383 | * firmware initiated stop, in which case we need to inform | |
384 | * mac80211. | |
385 | * Note that we can have a stopping and a running scan | |
386 | * simultaneously, but we can't have two different types of | |
387 | * scans stopping or running at the same time (since LMAC | |
388 | * doesn't support it). | |
389 | */ | |
390 | ||
391 | if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { | |
392 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); | |
393 | ||
394 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", | |
395 | aborted ? "aborted" : "completed", | |
396 | ebs_successful ? "successful" : "failed"); | |
e820c2da | 397 | |
9af91f46 LC |
398 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; |
399 | } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { | |
400 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", | |
401 | aborted ? "aborted" : "completed", | |
402 | ebs_successful ? "successful" : "failed"); | |
35a000b7 | 403 | |
9af91f46 LC |
404 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; |
405 | } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { | |
406 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); | |
407 | ||
408 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s (FW)\n", | |
409 | aborted ? "aborted" : "completed", | |
410 | ebs_successful ? "successful" : "failed"); | |
411 | ||
412 | mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; | |
33ea27f6 | 413 | ieee80211_sched_scan_stopped(mvm->hw); |
9af91f46 LC |
414 | } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
415 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", | |
416 | aborted ? "aborted" : "completed", | |
417 | ebs_successful ? "successful" : "failed"); | |
418 | ||
419 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; | |
fb98be5e | 420 | ieee80211_scan_completed(mvm->hw, |
1f940386 | 421 | scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
4ff78181 | 422 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
33ea27f6 | 423 | } |
35a000b7 | 424 | |
9af91f46 | 425 | mvm->last_ebs_successful = ebs_successful; |
e820c2da | 426 | |
35a000b7 DS |
427 | return 0; |
428 | } | |
429 | ||
35a000b7 DS |
430 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) |
431 | { | |
432 | int i; | |
433 | ||
434 | for (i = 0; i < PROBE_OPTION_MAX; i++) { | |
435 | if (!ssid_list[i].len) | |
436 | break; | |
437 | if (ssid_list[i].len == ssid_len && | |
438 | !memcmp(ssid_list->ssid, ssid, ssid_len)) | |
439 | return i; | |
440 | } | |
441 | return -1; | |
442 | } | |
443 | ||
f7b788b4 | 444 | static void iwl_scan_offload_build_ssid(struct iwl_mvm_scan_params *params, |
fb98be5e | 445 | struct iwl_ssid_ie *direct_scan, |
f7b788b4 | 446 | u32 *ssid_bitmap) |
35a000b7 DS |
447 | { |
448 | int i, j; | |
449 | int index; | |
450 | ||
451 | /* | |
452 | * copy SSIDs from match list. | |
453 | * iwl_config_sched_scan_profiles() uses the order of these ssids to | |
454 | * config match list. | |
455 | */ | |
f7b788b4 | 456 | for (i = 0; i < params->n_match_sets && i < PROBE_OPTION_MAX; i++) { |
ea73cbce | 457 | /* skip empty SSID matchsets */ |
f7b788b4 | 458 | if (!params->match_sets[i].ssid.ssid_len) |
ea73cbce | 459 | continue; |
fb98be5e | 460 | direct_scan[i].id = WLAN_EID_SSID; |
f7b788b4 LC |
461 | direct_scan[i].len = params->match_sets[i].ssid.ssid_len; |
462 | memcpy(direct_scan[i].ssid, params->match_sets[i].ssid.ssid, | |
fb98be5e | 463 | direct_scan[i].len); |
35a000b7 DS |
464 | } |
465 | ||
466 | /* add SSIDs from scan SSID list */ | |
467 | *ssid_bitmap = 0; | |
f7b788b4 LC |
468 | for (j = 0; j < params->n_ssids && i < PROBE_OPTION_MAX; j++) { |
469 | index = iwl_ssid_exist(params->ssids[j].ssid, | |
470 | params->ssids[j].ssid_len, | |
fb98be5e | 471 | direct_scan); |
35a000b7 | 472 | if (index < 0) { |
f7b788b4 | 473 | if (!params->ssids[j].ssid_len) |
35a000b7 | 474 | continue; |
fb98be5e | 475 | direct_scan[i].id = WLAN_EID_SSID; |
f7b788b4 LC |
476 | direct_scan[i].len = params->ssids[j].ssid_len; |
477 | memcpy(direct_scan[i].ssid, params->ssids[j].ssid, | |
fb98be5e | 478 | direct_scan[i].len); |
35a000b7 DS |
479 | *ssid_bitmap |= BIT(i + 1); |
480 | i++; | |
481 | } else { | |
482 | *ssid_bitmap |= BIT(index + 1); | |
483 | } | |
484 | } | |
485 | } | |
486 | ||
35a000b7 DS |
487 | int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, |
488 | struct cfg80211_sched_scan_request *req) | |
489 | { | |
490 | struct iwl_scan_offload_profile *profile; | |
491 | struct iwl_scan_offload_profile_cfg *profile_cfg; | |
492 | struct iwl_scan_offload_blacklist *blacklist; | |
493 | struct iwl_host_cmd cmd = { | |
494 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, | |
35a000b7 DS |
495 | .len[1] = sizeof(*profile_cfg), |
496 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
497 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, | |
498 | }; | |
499 | int blacklist_len; | |
500 | int i; | |
501 | int ret; | |
502 | ||
503 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) | |
504 | return -EIO; | |
505 | ||
506 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) | |
507 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; | |
508 | else | |
509 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; | |
510 | ||
511 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); | |
512 | if (!blacklist) | |
513 | return -ENOMEM; | |
514 | ||
515 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); | |
516 | if (!profile_cfg) { | |
517 | ret = -ENOMEM; | |
518 | goto free_blacklist; | |
519 | } | |
520 | ||
521 | cmd.data[0] = blacklist; | |
522 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; | |
523 | cmd.data[1] = profile_cfg; | |
524 | ||
525 | /* No blacklist configuration */ | |
526 | ||
527 | profile_cfg->num_profiles = req->n_match_sets; | |
528 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; | |
529 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; | |
530 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; | |
6e0bbe5e DS |
531 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
532 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; | |
35a000b7 DS |
533 | |
534 | for (i = 0; i < req->n_match_sets; i++) { | |
535 | profile = &profile_cfg->profiles[i]; | |
536 | profile->ssid_index = i; | |
537 | /* Support any cipher and auth algorithm */ | |
538 | profile->unicast_cipher = 0xff; | |
539 | profile->auth_alg = 0xff; | |
540 | profile->network_type = IWL_NETWORK_TYPE_ANY; | |
541 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; | |
542 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; | |
543 | } | |
544 | ||
545 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); | |
546 | ||
547 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
548 | kfree(profile_cfg); | |
549 | free_blacklist: | |
550 | kfree(blacklist); | |
551 | ||
552 | return ret; | |
553 | } | |
554 | ||
d2496221 DS |
555 | static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, |
556 | struct cfg80211_sched_scan_request *req) | |
557 | { | |
558 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
559 | IWL_DEBUG_SCAN(mvm, | |
560 | "Sending scheduled scan with filtering, n_match_sets %d\n", | |
561 | req->n_match_sets); | |
562 | return false; | |
563 | } | |
564 | ||
565 | IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); | |
566 | return true; | |
567 | } | |
568 | ||
fb98be5e | 569 | static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm) |
35a000b7 DS |
570 | { |
571 | int ret; | |
572 | struct iwl_host_cmd cmd = { | |
573 | .id = SCAN_OFFLOAD_ABORT_CMD, | |
35a000b7 DS |
574 | }; |
575 | u32 status; | |
576 | ||
577 | /* Exit instantly with error when device is not ready | |
578 | * to receive scan abort command or it does not perform | |
579 | * scheduled scan currently */ | |
9af91f46 | 580 | if (!mvm->scan_status) |
35a000b7 DS |
581 | return -EIO; |
582 | ||
583 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); | |
584 | if (ret) | |
585 | return ret; | |
586 | ||
587 | if (status != CAN_ABORT_STATUS) { | |
588 | /* | |
589 | * The scan abort will return 1 for success or | |
590 | * 2 for "failure". A failure condition can be | |
591 | * due to simply not being in an active scan which | |
592 | * can occur if we send the scan abort before the | |
593 | * microcode has notified us that a scan is completed. | |
594 | */ | |
595 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); | |
33ea27f6 | 596 | ret = -ENOENT; |
35a000b7 DS |
597 | } |
598 | ||
599 | return ret; | |
600 | } | |
601 | ||
fb98be5e | 602 | int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify) |
35a000b7 DS |
603 | { |
604 | int ret; | |
33ea27f6 AN |
605 | struct iwl_notification_wait wait_scan_done; |
606 | static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, }; | |
9af91f46 | 607 | bool sched = !!(mvm->scan_status & IWL_MVM_SCAN_SCHED); |
35a000b7 DS |
608 | |
609 | lockdep_assert_held(&mvm->mutex); | |
610 | ||
d2496221 DS |
611 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) |
612 | return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN, | |
613 | notify); | |
614 | ||
9af91f46 LC |
615 | /* FIXME: For now we only check if no scan is set here, since |
616 | * we only support LMAC in this flow and it doesn't support | |
617 | * multiple scans. | |
618 | */ | |
619 | if (!mvm->scan_status) | |
90ea15c1 EG |
620 | return 0; |
621 | ||
54331db9 LC |
622 | if (iwl_mvm_is_radio_killed(mvm)) { |
623 | ret = 0; | |
90ea15c1 | 624 | goto out; |
54331db9 | 625 | } |
90ea15c1 | 626 | |
33ea27f6 AN |
627 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
628 | scan_done_notif, | |
629 | ARRAY_SIZE(scan_done_notif), | |
630 | NULL, NULL); | |
631 | ||
fb98be5e | 632 | ret = iwl_mvm_send_scan_offload_abort(mvm); |
33ea27f6 | 633 | if (ret) { |
fb98be5e DS |
634 | IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n", |
635 | sched ? "offloaded " : "", ret); | |
33ea27f6 | 636 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
54331db9 | 637 | goto out; |
33ea27f6 AN |
638 | } |
639 | ||
fb98be5e | 640 | IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n", |
9af91f46 | 641 | sched ? "scheduled " : ""); |
33ea27f6 AN |
642 | |
643 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
54331db9 | 644 | out: |
9af91f46 LC |
645 | /* Clear the scan status so the next scan requests will |
646 | * succeed and mark the scan as stopping, so that the Rx | |
647 | * handler doesn't do anything, as the scan was stopped from | |
648 | * above. Since the rx handler won't do anything now, we have | |
649 | * to release the scan reference here. | |
33ea27f6 | 650 | */ |
9af91f46 | 651 | if (mvm->scan_status == IWL_MVM_SCAN_REGULAR) |
4ff78181 EP |
652 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
653 | ||
9af91f46 LC |
654 | if (sched) { |
655 | mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; | |
656 | mvm->scan_status |= IWL_MVM_SCAN_STOPPING_SCHED; | |
657 | if (notify) | |
fb98be5e | 658 | ieee80211_sched_scan_stopped(mvm->hw); |
9af91f46 LC |
659 | } else { |
660 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; | |
661 | mvm->scan_status |= IWL_MVM_SCAN_STOPPING_REGULAR; | |
662 | if (notify) | |
fb98be5e DS |
663 | ieee80211_scan_completed(mvm->hw, true); |
664 | } | |
636a2cdc | 665 | |
54331db9 | 666 | return ret; |
35a000b7 | 667 | } |
fb98be5e | 668 | |
65ff556b LC |
669 | static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, |
670 | struct iwl_scan_req_tx_cmd *tx_cmd, | |
671 | bool no_cck) | |
fb98be5e DS |
672 | { |
673 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
674 | TX_CMD_FLG_BT_DIS); | |
675 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
676 | IEEE80211_BAND_2GHZ, | |
677 | no_cck); | |
678 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; | |
679 | ||
680 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
681 | TX_CMD_FLG_BT_DIS); | |
682 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
683 | IEEE80211_BAND_5GHZ, | |
684 | no_cck); | |
685 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; | |
686 | } | |
687 | ||
688 | static void | |
689 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, | |
690 | struct ieee80211_channel **channels, | |
691 | int n_channels, u32 ssid_bitmap, | |
65ff556b | 692 | struct iwl_scan_req_lmac *cmd) |
fb98be5e DS |
693 | { |
694 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; | |
695 | int i; | |
696 | ||
697 | for (i = 0; i < n_channels; i++) { | |
698 | channel_cfg[i].channel_num = | |
699 | cpu_to_le16(channels[i]->hw_value); | |
700 | channel_cfg[i].iter_count = cpu_to_le16(1); | |
701 | channel_cfg[i].iter_interval = 0; | |
702 | channel_cfg[i].flags = | |
703 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | | |
704 | ssid_bitmap); | |
705 | } | |
706 | } | |
707 | ||
66dc5272 AO |
708 | static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, |
709 | size_t len, u8 *const pos) | |
710 | { | |
711 | static const u8 before_ds_params[] = { | |
712 | WLAN_EID_SSID, | |
713 | WLAN_EID_SUPP_RATES, | |
714 | WLAN_EID_REQUEST, | |
715 | WLAN_EID_EXT_SUPP_RATES, | |
716 | }; | |
717 | size_t offs; | |
718 | u8 *newpos = pos; | |
719 | ||
720 | if (!iwl_mvm_rrm_scan_needed(mvm)) { | |
721 | memcpy(newpos, ies, len); | |
722 | return newpos + len; | |
723 | } | |
724 | ||
725 | offs = ieee80211_ie_split(ies, len, | |
726 | before_ds_params, | |
727 | ARRAY_SIZE(before_ds_params), | |
728 | 0); | |
729 | ||
730 | memcpy(newpos, ies, offs); | |
731 | newpos += offs; | |
732 | ||
733 | /* Add a placeholder for DS Parameter Set element */ | |
734 | *newpos++ = WLAN_EID_DS_PARAMS; | |
735 | *newpos++ = 1; | |
736 | *newpos++ = 0; | |
737 | ||
738 | memcpy(newpos, ies + offs, len - offs); | |
739 | newpos += len - offs; | |
740 | ||
741 | return newpos; | |
742 | } | |
743 | ||
fb98be5e | 744 | static void |
65ff556b LC |
745 | iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
746 | struct ieee80211_scan_ies *ies, | |
747 | struct iwl_scan_probe_req *preq, | |
748 | const u8 *mac_addr, const u8 *mac_addr_mask) | |
fb98be5e | 749 | { |
fb98be5e | 750 | struct ieee80211_mgmt *frame = (struct ieee80211_mgmt *)preq->buf; |
66dc5272 | 751 | u8 *pos, *newpos; |
fb98be5e | 752 | |
effd05ac JB |
753 | /* |
754 | * Unfortunately, right now the offload scan doesn't support randomising | |
755 | * within the firmware, so until the firmware API is ready we implement | |
756 | * it in the driver. This means that the scan iterations won't really be | |
757 | * random, only when it's restarted, but at least that helps a bit. | |
758 | */ | |
759 | if (mac_addr) | |
760 | get_random_mask_addr(frame->sa, mac_addr, mac_addr_mask); | |
761 | else | |
762 | memcpy(frame->sa, vif->addr, ETH_ALEN); | |
763 | ||
fb98be5e DS |
764 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
765 | eth_broadcast_addr(frame->da); | |
fb98be5e DS |
766 | eth_broadcast_addr(frame->bssid); |
767 | frame->seq_ctrl = 0; | |
768 | ||
769 | pos = frame->u.probe_req.variable; | |
770 | *pos++ = WLAN_EID_SSID; | |
771 | *pos++ = 0; | |
772 | ||
773 | preq->mac_header.offset = 0; | |
774 | preq->mac_header.len = cpu_to_le16(24 + 2); | |
775 | ||
66dc5272 AO |
776 | /* Insert ds parameter set element on 2.4 GHz band */ |
777 | newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, | |
778 | ies->ies[IEEE80211_BAND_2GHZ], | |
779 | ies->len[IEEE80211_BAND_2GHZ], | |
780 | pos); | |
fb98be5e | 781 | preq->band_data[0].offset = cpu_to_le16(pos - preq->buf); |
66dc5272 AO |
782 | preq->band_data[0].len = cpu_to_le16(newpos - pos); |
783 | pos = newpos; | |
fb98be5e DS |
784 | |
785 | memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ], | |
786 | ies->len[IEEE80211_BAND_5GHZ]); | |
787 | preq->band_data[1].offset = cpu_to_le16(pos - preq->buf); | |
788 | preq->band_data[1].len = cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]); | |
789 | pos += ies->len[IEEE80211_BAND_5GHZ]; | |
790 | ||
791 | memcpy(pos, ies->common_ies, ies->common_ie_len); | |
792 | preq->common_data.offset = cpu_to_le16(pos - preq->buf); | |
793 | preq->common_data.len = cpu_to_le16(ies->common_ie_len); | |
794 | } | |
795 | ||
796 | static void | |
65ff556b LC |
797 | iwl_mvm_build_generic_scan_cmd(struct iwl_mvm *mvm, |
798 | struct iwl_scan_req_lmac *cmd, | |
799 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 800 | { |
af91344c | 801 | memset(cmd, 0, ksize(cmd)); |
2ce89cd6 DS |
802 | cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active; |
803 | cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive; | |
804 | if (params->passive_fragmented) | |
805 | cmd->fragmented_dwell = | |
190f1029 | 806 | params->dwell[IEEE80211_BAND_2GHZ].fragmented; |
fb98be5e DS |
807 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
808 | cmd->max_out_time = cpu_to_le32(params->max_out_time); | |
809 | cmd->suspend_time = cpu_to_le32(params->suspend_time); | |
810 | cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
fb98be5e | 811 | cmd->iter_num = cpu_to_le32(1); |
af91344c | 812 | |
73897bd1 AO |
813 | if (iwl_mvm_rrm_scan_needed(mvm)) |
814 | cmd->scan_flags |= | |
815 | cpu_to_le32(IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED); | |
fb98be5e DS |
816 | } |
817 | ||
999d2568 LC |
818 | static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, |
819 | struct ieee80211_scan_ies *ies, | |
820 | int n_channels) | |
821 | { | |
822 | return ((n_ssids <= PROBE_OPTION_MAX) && | |
823 | (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & | |
824 | (ies->common_ie_len + | |
825 | ies->len[NL80211_BAND_2GHZ] + | |
826 | ies->len[NL80211_BAND_5GHZ] <= | |
827 | iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); | |
828 | } | |
829 | ||
6749dd80 | 830 | static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
3db7c6e7 LC |
831 | struct ieee80211_scan_ies *ies, |
832 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 833 | { |
65ff556b | 834 | struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; |
d2496221 | 835 | struct iwl_scan_probe_req *preq; |
f7b788b4 | 836 | u32 flags = 0, ssid_bitmap = 0; |
3db7c6e7 | 837 | int i; |
fb98be5e DS |
838 | |
839 | lockdep_assert_held(&mvm->mutex); | |
840 | ||
3db7c6e7 | 841 | iwl_mvm_build_generic_scan_cmd(mvm, cmd, params); |
fb98be5e | 842 | |
f7b788b4 LC |
843 | cmd->n_channels = (u8)params->n_channels; |
844 | ||
845 | cmd->delay = cpu_to_le32(params->delay); | |
fb98be5e | 846 | |
f7b788b4 LC |
847 | if (params->pass_all) |
848 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
849 | else | |
850 | flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; | |
fb98be5e | 851 | |
f7b788b4 | 852 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
fb98be5e DS |
853 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; |
854 | ||
3db7c6e7 | 855 | if (params->passive_fragmented) |
fb98be5e DS |
856 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; |
857 | ||
f7b788b4 | 858 | if (params->n_ssids == 0) |
fb98be5e DS |
859 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; |
860 | ||
f7b788b4 LC |
861 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
862 | /* TODO: Check if it's okay to have this in regular scans */ | |
863 | if (mvm->scan_iter_notif_enabled) | |
864 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; | |
865 | #endif | |
866 | ||
73897bd1 | 867 | cmd->scan_flags |= cpu_to_le32(flags); |
fb98be5e | 868 | |
f7b788b4 | 869 | cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band); |
fb98be5e DS |
870 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
871 | MAC_FILTER_IN_BEACON); | |
f7b788b4 LC |
872 | iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); |
873 | iwl_mvm_scan_fill_ssids(cmd->direct_scan, params); | |
fb98be5e | 874 | |
f7b788b4 | 875 | cmd->schedule[0].delay = cpu_to_le16(params->interval); |
fb98be5e DS |
876 | cmd->schedule[0].iterations = 1; |
877 | cmd->schedule[0].full_scan_mul = 0; | |
f7b788b4 | 878 | cmd->schedule[1].delay = cpu_to_le16(params->interval); |
fb98be5e DS |
879 | cmd->schedule[1].iterations = 0; |
880 | cmd->schedule[1].full_scan_mul = 0; | |
881 | ||
1f9c418f DS |
882 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_SINGLE_SCAN_EBS && |
883 | mvm->last_ebs_successful) { | |
884 | cmd->channel_opt[0].flags = | |
885 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
886 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
887 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
888 | cmd->channel_opt[0].non_ebs_ratio = | |
889 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); | |
890 | cmd->channel_opt[1].flags = | |
891 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
892 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
893 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
894 | cmd->channel_opt[1].non_ebs_ratio = | |
895 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); | |
896 | } | |
897 | ||
f7b788b4 | 898 | for (i = 1; i <= params->n_ssids; i++) |
fb98be5e DS |
899 | ssid_bitmap |= BIT(i); |
900 | ||
f7b788b4 LC |
901 | iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, |
902 | params->n_channels, ssid_bitmap, cmd); | |
fb98be5e | 903 | |
d2496221 DS |
904 | preq = (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * |
905 | mvm->fw->ucode_capa.n_scan_channels); | |
906 | ||
6749dd80 | 907 | iwl_mvm_build_scan_probe(mvm, vif, ies, preq, |
f7b788b4 LC |
908 | params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
909 | params->mac_addr : NULL, | |
910 | params->mac_addr_mask); | |
fb98be5e | 911 | |
3db7c6e7 | 912 | return 0; |
fb98be5e DS |
913 | } |
914 | ||
f7b788b4 LC |
915 | static int |
916 | iwl_mvm_sched_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
917 | struct ieee80211_scan_ies *ies, | |
918 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 919 | { |
65ff556b | 920 | struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; |
d2496221 | 921 | struct iwl_scan_probe_req *preq; |
fb98be5e DS |
922 | u32 flags = 0, ssid_bitmap = 0; |
923 | ||
924 | lockdep_assert_held(&mvm->mutex); | |
925 | ||
8df3e68f | 926 | iwl_mvm_build_generic_scan_cmd(mvm, cmd, params); |
fb98be5e | 927 | |
f7b788b4 | 928 | cmd->n_channels = (u8)params->n_channels; |
fb98be5e | 929 | |
f7b788b4 | 930 | cmd->delay = cpu_to_le32(params->delay); |
2250fd94 | 931 | |
f7b788b4 | 932 | if (params->pass_all) |
fb98be5e | 933 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; |
7e2a3883 DS |
934 | else |
935 | flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; | |
fb98be5e | 936 | |
f7b788b4 | 937 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
fb98be5e DS |
938 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; |
939 | ||
8df3e68f | 940 | if (params->passive_fragmented) |
fb98be5e DS |
941 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; |
942 | ||
f7b788b4 | 943 | if (params->n_ssids == 0) |
fb98be5e DS |
944 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; |
945 | ||
e5d74646 AB |
946 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
947 | if (mvm->scan_iter_notif_enabled) | |
948 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; | |
949 | #endif | |
950 | ||
73897bd1 | 951 | cmd->scan_flags |= cpu_to_le32(flags); |
fb98be5e | 952 | |
f7b788b4 | 953 | cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band); |
fb98be5e DS |
954 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
955 | MAC_FILTER_IN_BEACON); | |
f7b788b4 LC |
956 | iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); |
957 | ||
958 | iwl_scan_offload_build_ssid(params, cmd->direct_scan, &ssid_bitmap); | |
fb98be5e | 959 | |
f7b788b4 | 960 | cmd->schedule[0].delay = cpu_to_le16(params->interval); |
fb98be5e DS |
961 | cmd->schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS; |
962 | cmd->schedule[0].full_scan_mul = 1; | |
963 | ||
f7b788b4 | 964 | cmd->schedule[1].delay = cpu_to_le16(params->interval); |
fb98be5e DS |
965 | cmd->schedule[1].iterations = 0xff; |
966 | cmd->schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER; | |
967 | ||
1f9c418f DS |
968 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT && |
969 | mvm->last_ebs_successful) { | |
970 | cmd->channel_opt[0].flags = | |
971 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
972 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
973 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
974 | cmd->channel_opt[0].non_ebs_ratio = | |
975 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); | |
976 | cmd->channel_opt[1].flags = | |
977 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
978 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
979 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
980 | cmd->channel_opt[1].non_ebs_ratio = | |
981 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); | |
982 | } | |
983 | ||
f7b788b4 LC |
984 | iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, |
985 | params->n_channels, ssid_bitmap, cmd); | |
fb98be5e | 986 | |
d2496221 DS |
987 | preq = (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * |
988 | mvm->fw->ucode_capa.n_scan_channels); | |
989 | ||
65ff556b | 990 | iwl_mvm_build_scan_probe(mvm, vif, ies, preq, |
f7b788b4 LC |
991 | params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
992 | params->mac_addr : NULL, | |
993 | params->mac_addr_mask); | |
fb98be5e | 994 | |
8df3e68f | 995 | return 0; |
fb98be5e DS |
996 | } |
997 | ||
998 | ||
999 | int iwl_mvm_cancel_scan(struct iwl_mvm *mvm) | |
1000 | { | |
d2496221 DS |
1001 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) |
1002 | return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_REG_SCAN, | |
1003 | true); | |
1004 | ||
9af91f46 | 1005 | if (!(mvm->scan_status & IWL_MVM_SCAN_REGULAR)) |
9b520d84 EG |
1006 | return 0; |
1007 | ||
1008 | if (iwl_mvm_is_radio_killed(mvm)) { | |
1009 | ieee80211_scan_completed(mvm->hw, true); | |
1010 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
9af91f46 | 1011 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; |
9b520d84 EG |
1012 | return 0; |
1013 | } | |
1014 | ||
1f940386 | 1015 | return iwl_mvm_scan_offload_stop(mvm, true); |
fb98be5e | 1016 | } |
d2496221 DS |
1017 | |
1018 | /* UMAC scan API */ | |
1019 | ||
1020 | struct iwl_umac_scan_done { | |
1021 | struct iwl_mvm *mvm; | |
1022 | enum iwl_umac_scan_uid_type type; | |
1023 | }; | |
1024 | ||
1025 | static int rate_to_scan_rate_flag(unsigned int rate) | |
1026 | { | |
1027 | static const int rate_to_scan_rate[IWL_RATE_COUNT] = { | |
1028 | [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, | |
1029 | [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, | |
1030 | [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, | |
1031 | [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, | |
1032 | [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, | |
1033 | [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, | |
1034 | [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, | |
1035 | [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, | |
1036 | [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, | |
1037 | [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, | |
1038 | [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, | |
1039 | [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, | |
1040 | }; | |
1041 | ||
1042 | return rate_to_scan_rate[rate]; | |
1043 | } | |
1044 | ||
1045 | static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) | |
1046 | { | |
1047 | struct ieee80211_supported_band *band; | |
1048 | unsigned int rates = 0; | |
1049 | int i; | |
1050 | ||
1051 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
1052 | for (i = 0; i < band->n_bitrates; i++) | |
1053 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
1054 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; | |
1055 | for (i = 0; i < band->n_bitrates; i++) | |
1056 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
1057 | ||
1058 | /* Set both basic rates and supported rates */ | |
1059 | rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); | |
1060 | ||
1061 | return cpu_to_le32(rates); | |
1062 | } | |
1063 | ||
1064 | int iwl_mvm_config_scan(struct iwl_mvm *mvm) | |
1065 | { | |
1066 | ||
1067 | struct iwl_scan_config *scan_config; | |
1068 | struct ieee80211_supported_band *band; | |
1069 | int num_channels = | |
1070 | mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels + | |
1071 | mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; | |
1072 | int ret, i, j = 0, cmd_size, data_size; | |
1073 | struct iwl_host_cmd cmd = { | |
1074 | .id = SCAN_CFG_CMD, | |
1075 | }; | |
1076 | ||
1077 | if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) | |
1078 | return -ENOBUFS; | |
1079 | ||
1080 | cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels; | |
1081 | ||
1082 | scan_config = kzalloc(cmd_size, GFP_KERNEL); | |
1083 | if (!scan_config) | |
1084 | return -ENOMEM; | |
1085 | ||
1086 | data_size = cmd_size - sizeof(struct iwl_mvm_umac_cmd_hdr); | |
1087 | scan_config->hdr.size = cpu_to_le16(data_size); | |
1088 | scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE | | |
1089 | SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | | |
1090 | SCAN_CONFIG_FLAG_SET_TX_CHAINS | | |
1091 | SCAN_CONFIG_FLAG_SET_RX_CHAINS | | |
1092 | SCAN_CONFIG_FLAG_SET_ALL_TIMES | | |
1093 | SCAN_CONFIG_FLAG_SET_LEGACY_RATES | | |
1094 | SCAN_CONFIG_FLAG_SET_MAC_ADDR | | |
1095 | SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| | |
1096 | SCAN_CONFIG_N_CHANNELS(num_channels)); | |
a0544272 | 1097 | scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
d2496221 DS |
1098 | scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
1099 | scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm); | |
1100 | scan_config->out_of_channel_time = cpu_to_le32(170); | |
1101 | scan_config->suspend_time = cpu_to_le32(30); | |
1102 | scan_config->dwell_active = 20; | |
1103 | scan_config->dwell_passive = 110; | |
1104 | scan_config->dwell_fragmented = 20; | |
1105 | ||
1106 | memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); | |
1107 | ||
1108 | scan_config->bcast_sta_id = mvm->aux_sta.sta_id; | |
1109 | scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS | | |
1110 | IWL_CHANNEL_FLAG_ACCURATE_EBS | | |
1111 | IWL_CHANNEL_FLAG_EBS_ADD | | |
1112 | IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; | |
1113 | ||
1114 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
1115 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 1116 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
1117 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; |
1118 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 1119 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
1120 | |
1121 | cmd.data[0] = scan_config; | |
1122 | cmd.len[0] = cmd_size; | |
1123 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; | |
1124 | ||
1125 | IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); | |
1126 | ||
1127 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
1128 | ||
1129 | kfree(scan_config); | |
1130 | return ret; | |
1131 | } | |
1132 | ||
1133 | static int iwl_mvm_find_scan_uid(struct iwl_mvm *mvm, u32 uid) | |
1134 | { | |
1135 | int i; | |
1136 | ||
507e4cda | 1137 | for (i = 0; i < mvm->max_scans; i++) |
d2496221 DS |
1138 | if (mvm->scan_uid[i] == uid) |
1139 | return i; | |
1140 | ||
1141 | return i; | |
1142 | } | |
1143 | ||
1144 | static int iwl_mvm_find_free_scan_uid(struct iwl_mvm *mvm) | |
1145 | { | |
1146 | return iwl_mvm_find_scan_uid(mvm, 0); | |
1147 | } | |
1148 | ||
1149 | static bool iwl_mvm_find_scan_type(struct iwl_mvm *mvm, | |
1150 | enum iwl_umac_scan_uid_type type) | |
1151 | { | |
1152 | int i; | |
1153 | ||
507e4cda | 1154 | for (i = 0; i < mvm->max_scans; i++) |
d2496221 DS |
1155 | if (mvm->scan_uid[i] & type) |
1156 | return true; | |
1157 | ||
1158 | return false; | |
1159 | } | |
1160 | ||
963221be AB |
1161 | static int iwl_mvm_find_first_scan(struct iwl_mvm *mvm, |
1162 | enum iwl_umac_scan_uid_type type) | |
1163 | { | |
1164 | int i; | |
1165 | ||
507e4cda | 1166 | for (i = 0; i < mvm->max_scans; i++) |
963221be AB |
1167 | if (mvm->scan_uid[i] & type) |
1168 | return i; | |
1169 | ||
1170 | return i; | |
1171 | } | |
1172 | ||
d2496221 DS |
1173 | static u32 iwl_generate_scan_uid(struct iwl_mvm *mvm, |
1174 | enum iwl_umac_scan_uid_type type) | |
1175 | { | |
1176 | u32 uid; | |
1177 | ||
1178 | /* make sure exactly one bit is on in scan type */ | |
1179 | WARN_ON(hweight8(type) != 1); | |
1180 | ||
1181 | /* | |
1182 | * Make sure scan uids are unique. If one scan lasts long time while | |
1183 | * others are completing frequently, the seq number will wrap up and | |
1184 | * we may have more than one scan with the same uid. | |
1185 | */ | |
1186 | do { | |
1187 | uid = type | (mvm->scan_seq_num << | |
1188 | IWL_UMAC_SCAN_UID_SEQ_OFFSET); | |
1189 | mvm->scan_seq_num++; | |
507e4cda | 1190 | } while (iwl_mvm_find_scan_uid(mvm, uid) < mvm->max_scans); |
d2496221 DS |
1191 | |
1192 | IWL_DEBUG_SCAN(mvm, "Generated scan UID %u\n", uid); | |
1193 | ||
1194 | return uid; | |
1195 | } | |
1196 | ||
1197 | static void | |
1198 | iwl_mvm_build_generic_umac_scan_cmd(struct iwl_mvm *mvm, | |
1199 | struct iwl_scan_req_umac *cmd, | |
1200 | struct iwl_mvm_scan_params *params) | |
1201 | { | |
1202 | memset(cmd, 0, ksize(cmd)); | |
1203 | cmd->hdr.size = cpu_to_le16(iwl_mvm_scan_size(mvm) - | |
1204 | sizeof(struct iwl_mvm_umac_cmd_hdr)); | |
1205 | cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active; | |
1206 | cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive; | |
1207 | if (params->passive_fragmented) | |
1208 | cmd->fragmented_dwell = | |
190f1029 | 1209 | params->dwell[IEEE80211_BAND_2GHZ].fragmented; |
d2496221 DS |
1210 | cmd->max_out_time = cpu_to_le32(params->max_out_time); |
1211 | cmd->suspend_time = cpu_to_le32(params->suspend_time); | |
1212 | cmd->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
1213 | } | |
1214 | ||
1215 | static void | |
1216 | iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, | |
1217 | struct ieee80211_channel **channels, | |
1218 | int n_channels, u32 ssid_bitmap, | |
1219 | struct iwl_scan_req_umac *cmd) | |
1220 | { | |
1221 | struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data; | |
1222 | int i; | |
1223 | ||
1224 | for (i = 0; i < n_channels; i++) { | |
1225 | channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); | |
1226 | channel_cfg[i].channel_num = channels[i]->hw_value; | |
1227 | channel_cfg[i].iter_count = 1; | |
1228 | channel_cfg[i].iter_interval = 0; | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | static u32 iwl_mvm_scan_umac_common_flags(struct iwl_mvm *mvm, int n_ssids, | |
1233 | struct cfg80211_ssid *ssids, | |
1234 | int fragmented) | |
1235 | { | |
1236 | int flags = 0; | |
1237 | ||
1238 | if (n_ssids == 0) | |
1239 | flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; | |
1240 | ||
1241 | if (n_ssids == 1 && ssids[0].ssid_len != 0) | |
1242 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; | |
1243 | ||
1244 | if (fragmented) | |
1245 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; | |
1246 | ||
1247 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
1248 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; | |
1249 | ||
1250 | return flags; | |
1251 | } | |
1252 | ||
6749dd80 | 1253 | static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
3db7c6e7 LC |
1254 | struct ieee80211_scan_ies *ies, |
1255 | struct iwl_mvm_scan_params *params) | |
d2496221 | 1256 | { |
d2496221 DS |
1257 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
1258 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + | |
1259 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1260 | mvm->fw->ucode_capa.n_scan_channels; | |
d2496221 | 1261 | u32 uid, flags; |
c8660dd5 | 1262 | u32 ssid_bitmap = 0; |
f7b788b4 | 1263 | int uid_idx, i; |
d2496221 DS |
1264 | |
1265 | lockdep_assert_held(&mvm->mutex); | |
1266 | ||
1267 | uid_idx = iwl_mvm_find_free_scan_uid(mvm); | |
507e4cda | 1268 | if (uid_idx >= mvm->max_scans) |
d2496221 DS |
1269 | return -EBUSY; |
1270 | ||
3db7c6e7 | 1271 | iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, params); |
d2496221 DS |
1272 | |
1273 | uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_REG_SCAN); | |
1274 | mvm->scan_uid[uid_idx] = uid; | |
1275 | cmd->uid = cpu_to_le32(uid); | |
1276 | ||
1277 | cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
1278 | ||
f7b788b4 LC |
1279 | flags = iwl_mvm_scan_umac_common_flags(mvm, params->n_ssids, |
1280 | params->ssids, | |
3db7c6e7 | 1281 | params->passive_fragmented); |
d2496221 | 1282 | |
f7b788b4 LC |
1283 | if (params->pass_all) |
1284 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; | |
1285 | else | |
1286 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; | |
d2496221 DS |
1287 | |
1288 | cmd->general_flags = cpu_to_le32(flags); | |
4db6558c HD |
1289 | |
1290 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_SINGLE_SCAN_EBS && | |
1291 | mvm->last_ebs_successful) | |
1292 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | | |
1293 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1294 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; | |
1295 | ||
f7b788b4 | 1296 | cmd->n_channels = params->n_channels; |
d2496221 | 1297 | |
f7b788b4 | 1298 | for (i = 0; i < params->n_ssids; i++) |
d2496221 DS |
1299 | ssid_bitmap |= BIT(i); |
1300 | ||
f7b788b4 LC |
1301 | iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
1302 | params->n_channels, ssid_bitmap, cmd); | |
d2496221 DS |
1303 | |
1304 | sec_part->schedule[0].iter_count = 1; | |
1305 | sec_part->delay = 0; | |
1306 | ||
6749dd80 | 1307 | iwl_mvm_build_scan_probe(mvm, vif, ies, &sec_part->preq, |
f7b788b4 LC |
1308 | params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
1309 | params->mac_addr : NULL, | |
1310 | params->mac_addr_mask); | |
d2496221 | 1311 | |
f7b788b4 | 1312 | iwl_mvm_scan_fill_ssids(sec_part->direct_scan, params); |
d2496221 | 1313 | |
3db7c6e7 | 1314 | return 0; |
d2496221 DS |
1315 | } |
1316 | ||
6749dd80 LC |
1317 | static int iwl_mvm_sched_scan_umac(struct iwl_mvm *mvm, |
1318 | struct ieee80211_vif *vif, | |
8df3e68f LC |
1319 | struct ieee80211_scan_ies *ies, |
1320 | struct iwl_mvm_scan_params *params) | |
d2496221 | 1321 | { |
d2496221 DS |
1322 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
1323 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + | |
1324 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1325 | mvm->fw->ucode_capa.n_scan_channels; | |
d2496221 | 1326 | u32 uid, flags; |
c8660dd5 | 1327 | u32 ssid_bitmap = 0; |
8df3e68f | 1328 | int uid_idx; |
d2496221 DS |
1329 | |
1330 | lockdep_assert_held(&mvm->mutex); | |
1331 | ||
1332 | uid_idx = iwl_mvm_find_free_scan_uid(mvm); | |
507e4cda | 1333 | if (uid_idx >= mvm->max_scans) |
d2496221 DS |
1334 | return -EBUSY; |
1335 | ||
8df3e68f | 1336 | iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, params); |
d2496221 DS |
1337 | |
1338 | cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); | |
1339 | ||
1340 | uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN); | |
1341 | mvm->scan_uid[uid_idx] = uid; | |
1342 | cmd->uid = cpu_to_le32(uid); | |
1343 | ||
1344 | cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_LOW); | |
1345 | ||
f7b788b4 LC |
1346 | flags = iwl_mvm_scan_umac_common_flags(mvm, params->n_ssids, |
1347 | params->ssids, | |
8df3e68f | 1348 | params->passive_fragmented); |
d2496221 DS |
1349 | |
1350 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; | |
1351 | ||
f7b788b4 | 1352 | if (params->pass_all) |
d2496221 DS |
1353 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; |
1354 | else | |
1355 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; | |
1356 | ||
1357 | cmd->general_flags = cpu_to_le32(flags); | |
1358 | ||
1359 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT && | |
1360 | mvm->last_ebs_successful) | |
1361 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | | |
1362 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1363 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; | |
1364 | ||
f7b788b4 | 1365 | cmd->n_channels = params->n_channels; |
d2496221 | 1366 | |
f7b788b4 LC |
1367 | iwl_scan_offload_build_ssid(params, sec_part->direct_scan, |
1368 | &ssid_bitmap); | |
d2496221 DS |
1369 | |
1370 | /* This API uses bits 0-19 instead of 1-20. */ | |
1371 | ssid_bitmap = ssid_bitmap >> 1; | |
1372 | ||
f7b788b4 LC |
1373 | iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
1374 | params->n_channels, ssid_bitmap, cmd); | |
d2496221 DS |
1375 | |
1376 | sec_part->schedule[0].interval = | |
f7b788b4 | 1377 | cpu_to_le16(params->interval / MSEC_PER_SEC); |
d2496221 DS |
1378 | sec_part->schedule[0].iter_count = 0xff; |
1379 | ||
f7b788b4 | 1380 | if (params->delay > U16_MAX) { |
2250fd94 LC |
1381 | IWL_DEBUG_SCAN(mvm, |
1382 | "delay value is > 16-bits, set to max possible\n"); | |
1383 | sec_part->delay = cpu_to_le16(U16_MAX); | |
1384 | } else { | |
f7b788b4 | 1385 | sec_part->delay = cpu_to_le16(params->delay); |
2250fd94 | 1386 | } |
d2496221 | 1387 | |
65ff556b | 1388 | iwl_mvm_build_scan_probe(mvm, vif, ies, &sec_part->preq, |
f7b788b4 LC |
1389 | params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
1390 | params->mac_addr : NULL, | |
1391 | params->mac_addr_mask); | |
d2496221 | 1392 | |
8df3e68f | 1393 | return 0; |
d2496221 DS |
1394 | } |
1395 | ||
6749dd80 LC |
1396 | static int iwl_mvm_num_scans(struct iwl_mvm *mvm) |
1397 | { | |
1398 | return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); | |
1399 | } | |
1400 | ||
1401 | static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) | |
1402 | { | |
1403 | /* This looks a bit arbitrary, but the idea is that if we run | |
1404 | * out of possible simultaneous scans and the userspace is | |
1405 | * trying to run a scan type that is already running, we | |
1406 | * return -EBUSY. But if the userspace wants to start a | |
1407 | * different type of scan, we stop the opposite type to make | |
1408 | * space for the new request. The reason is backwards | |
1409 | * compatibility with old wpa_supplicant that wouldn't stop a | |
1410 | * scheduled scan before starting a normal scan. | |
1411 | */ | |
1412 | ||
1413 | if (iwl_mvm_num_scans(mvm) < mvm->max_scans) | |
1414 | return 0; | |
1415 | ||
1416 | /* Use a switch, even though this is a bitmask, so that more | |
1417 | * than one bits set will fall in default and we will warn. | |
1418 | */ | |
1419 | switch (type) { | |
1420 | case IWL_MVM_SCAN_REGULAR: | |
1421 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) | |
1422 | return -EBUSY; | |
1423 | return iwl_mvm_scan_offload_stop(mvm, true); | |
1424 | case IWL_MVM_SCAN_SCHED: | |
1425 | if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) | |
1426 | return -EBUSY; | |
1427 | return iwl_mvm_cancel_scan(mvm); | |
19945dfb LC |
1428 | case IWL_MVM_SCAN_NETDETECT: |
1429 | /* No need to stop anything for net-detect since the | |
1430 | * firmware is restarted anyway. This way, any sched | |
1431 | * scans that were running will be restarted when we | |
1432 | * resume. | |
1433 | */ | |
1434 | return 0; | |
6749dd80 LC |
1435 | default: |
1436 | WARN_ON(1); | |
1437 | break; | |
1438 | } | |
1439 | ||
1440 | return -EIO; | |
1441 | } | |
1442 | ||
1443 | int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1444 | struct cfg80211_scan_request *req, | |
1445 | struct ieee80211_scan_ies *ies) | |
1446 | { | |
3db7c6e7 LC |
1447 | struct iwl_host_cmd hcmd = { |
1448 | .len = { iwl_mvm_scan_size(mvm), }, | |
1449 | .data = { mvm->scan_cmd, }, | |
1450 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1451 | }; | |
1452 | struct iwl_mvm_scan_params params = {}; | |
6749dd80 LC |
1453 | int ret; |
1454 | ||
1455 | lockdep_assert_held(&mvm->mutex); | |
1456 | ||
1457 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1458 | IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); | |
1459 | return -EBUSY; | |
1460 | } | |
1461 | ||
1462 | ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); | |
1463 | if (ret) | |
1464 | return ret; | |
1465 | ||
1466 | iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); | |
1467 | ||
3db7c6e7 LC |
1468 | /* we should have failed registration if scan_cmd was NULL */ |
1469 | if (WARN_ON(!mvm->scan_cmd)) | |
1470 | return -ENOMEM; | |
1471 | ||
1472 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1473 | return -ENOBUFS; | |
1474 | ||
f7b788b4 LC |
1475 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags, ¶ms); |
1476 | ||
1477 | params.n_channels = req->n_channels; | |
1478 | params.delay = 0; | |
1479 | params.interval = 0; | |
1480 | params.ssids = req->ssids; | |
1481 | params.channels = req->channels; | |
1482 | params.mac_addr = req->mac_addr; | |
1483 | params.mac_addr_mask = req->mac_addr_mask; | |
1484 | params.no_cck = req->no_cck; | |
1485 | params.pass_all = true; | |
1486 | params.n_match_sets = 0; | |
1487 | params.match_sets = NULL; | |
3db7c6e7 LC |
1488 | |
1489 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { | |
1490 | hcmd.id = SCAN_REQ_UMAC; | |
f7b788b4 | 1491 | ret = iwl_mvm_scan_umac(mvm, vif, ies, ¶ms); |
3db7c6e7 LC |
1492 | } else { |
1493 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; | |
f7b788b4 | 1494 | ret = iwl_mvm_scan_lmac(mvm, vif, ies, ¶ms); |
3db7c6e7 LC |
1495 | } |
1496 | ||
1497 | if (ret) | |
1498 | return ret; | |
1499 | ||
1500 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1501 | if (!ret) { | |
1502 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); | |
1503 | mvm->scan_status |= IWL_MVM_SCAN_REGULAR; | |
1504 | } else { | |
1505 | /* If the scan failed, it usually means that the FW was unable | |
1506 | * to allocate the time events. Warn on it, but maybe we | |
1507 | * should try to send the command again with different params. | |
1508 | */ | |
1509 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
1510 | } | |
6749dd80 LC |
1511 | |
1512 | if (ret) | |
1513 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1514 | ||
1515 | return ret; | |
1516 | } | |
1517 | ||
65ff556b LC |
1518 | int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, |
1519 | struct ieee80211_vif *vif, | |
1520 | struct cfg80211_sched_scan_request *req, | |
19945dfb LC |
1521 | struct ieee80211_scan_ies *ies, |
1522 | int type) | |
65ff556b | 1523 | { |
8df3e68f LC |
1524 | struct iwl_host_cmd hcmd = { |
1525 | .len = { iwl_mvm_scan_size(mvm), }, | |
1526 | .data = { mvm->scan_cmd, }, | |
1527 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1528 | }; | |
1529 | struct iwl_mvm_scan_params params = {}; | |
65ff556b LC |
1530 | int ret; |
1531 | ||
6749dd80 LC |
1532 | lockdep_assert_held(&mvm->mutex); |
1533 | ||
1534 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1535 | IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); | |
1536 | return -EBUSY; | |
1537 | } | |
1538 | ||
19945dfb | 1539 | ret = iwl_mvm_check_running_scans(mvm, type); |
6749dd80 LC |
1540 | if (ret) |
1541 | return ret; | |
1542 | ||
8df3e68f LC |
1543 | /* we should have failed registration if scan_cmd was NULL */ |
1544 | if (WARN_ON(!mvm->scan_cmd)) | |
1545 | return -ENOMEM; | |
1546 | ||
1547 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1548 | return -ENOBUFS; | |
1549 | ||
f7b788b4 LC |
1550 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags, ¶ms); |
1551 | ||
1552 | params.n_channels = req->n_channels; | |
1553 | params.delay = req->delay; | |
1554 | params.ssids = req->ssids; | |
1555 | params.channels = req->channels; | |
1556 | params.mac_addr = req->mac_addr; | |
1557 | params.mac_addr_mask = req->mac_addr_mask; | |
1558 | params.no_cck = false; | |
1559 | params.pass_all = iwl_mvm_scan_pass_all(mvm, req); | |
1560 | params.n_match_sets = req->n_match_sets; | |
1561 | params.match_sets = req->match_sets; | |
1562 | ||
1563 | if (req->interval > U16_MAX) { | |
1564 | IWL_DEBUG_SCAN(mvm, | |
1565 | "interval value is > 16-bits, set to max possible\n"); | |
1566 | params.interval = U16_MAX; | |
1567 | } else { | |
1568 | params.interval = req->interval / MSEC_PER_SEC; | |
1569 | } | |
8df3e68f | 1570 | |
65ff556b LC |
1571 | ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
1572 | if (ret) | |
1573 | return ret; | |
1574 | ||
1575 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { | |
8df3e68f | 1576 | hcmd.id = SCAN_REQ_UMAC; |
f7b788b4 | 1577 | ret = iwl_mvm_sched_scan_umac(mvm, vif, ies, ¶ms); |
65ff556b | 1578 | } else { |
8df3e68f | 1579 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; |
f7b788b4 | 1580 | ret = iwl_mvm_sched_scan_lmac(mvm, vif, ies, ¶ms); |
8df3e68f LC |
1581 | } |
1582 | ||
1583 | if (ret) | |
1584 | return ret; | |
1585 | ||
1586 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1587 | if (!ret) { | |
1588 | IWL_DEBUG_SCAN(mvm, | |
1589 | "Sched scan request was sent successfully\n"); | |
1590 | mvm->scan_status |= type; | |
1591 | } else { | |
1592 | /* If the scan failed, it usually means that the FW was unable | |
1593 | * to allocate the time events. Warn on it, but maybe we | |
1594 | * should try to send the command again with different params. | |
1595 | */ | |
1596 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
65ff556b LC |
1597 | } |
1598 | ||
1599 | return ret; | |
1600 | } | |
1601 | ||
d2496221 DS |
1602 | int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, |
1603 | struct iwl_rx_cmd_buffer *rxb, | |
1604 | struct iwl_device_cmd *cmd) | |
1605 | { | |
1606 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1607 | struct iwl_umac_scan_complete *notif = (void *)pkt->data; | |
1608 | u32 uid = __le32_to_cpu(notif->uid); | |
1609 | bool sched = !!(uid & IWL_UMAC_SCAN_UID_SCHED_SCAN); | |
1610 | int uid_idx = iwl_mvm_find_scan_uid(mvm, uid); | |
1611 | ||
2992a324 DS |
1612 | /* |
1613 | * Scan uid may be set to zero in case of scan abort request from above. | |
1614 | */ | |
507e4cda | 1615 | if (uid_idx >= mvm->max_scans) |
d2496221 DS |
1616 | return 0; |
1617 | ||
1618 | IWL_DEBUG_SCAN(mvm, | |
1619 | "Scan completed, uid %u type %s, status %s, EBS status %s\n", | |
1620 | uid, sched ? "sched" : "regular", | |
1621 | notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? | |
1622 | "completed" : "aborted", | |
1623 | notif->ebs_status == IWL_SCAN_EBS_SUCCESS ? | |
1624 | "success" : "failed"); | |
1625 | ||
5a4b2afa HD |
1626 | if (notif->ebs_status) |
1627 | mvm->last_ebs_successful = false; | |
1628 | ||
d2496221 DS |
1629 | mvm->scan_uid[uid_idx] = 0; |
1630 | ||
1631 | if (!sched) { | |
1632 | ieee80211_scan_completed(mvm->hw, | |
1633 | notif->status == | |
1634 | IWL_SCAN_OFFLOAD_ABORTED); | |
1635 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1636 | } else if (!iwl_mvm_find_scan_type(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN)) { | |
1637 | ieee80211_sched_scan_stopped(mvm->hw); | |
1638 | } else { | |
1639 | IWL_DEBUG_SCAN(mvm, "Another sched scan is running\n"); | |
1640 | } | |
1641 | ||
1642 | return 0; | |
1643 | } | |
1644 | ||
1645 | static bool iwl_scan_umac_done_check(struct iwl_notif_wait_data *notif_wait, | |
1646 | struct iwl_rx_packet *pkt, void *data) | |
1647 | { | |
1648 | struct iwl_umac_scan_done *scan_done = data; | |
1649 | struct iwl_umac_scan_complete *notif = (void *)pkt->data; | |
1650 | u32 uid = __le32_to_cpu(notif->uid); | |
1651 | int uid_idx = iwl_mvm_find_scan_uid(scan_done->mvm, uid); | |
1652 | ||
1653 | if (WARN_ON(pkt->hdr.cmd != SCAN_COMPLETE_UMAC)) | |
1654 | return false; | |
1655 | ||
507e4cda | 1656 | if (uid_idx >= scan_done->mvm->max_scans) |
d2496221 DS |
1657 | return false; |
1658 | ||
1659 | /* | |
1660 | * Clear scan uid of scans that was aborted from above and completed | |
5a4b2afa HD |
1661 | * in FW so the RX handler does nothing. Set last_ebs_successful here if |
1662 | * needed. | |
d2496221 DS |
1663 | */ |
1664 | scan_done->mvm->scan_uid[uid_idx] = 0; | |
1665 | ||
5a4b2afa HD |
1666 | if (notif->ebs_status) |
1667 | scan_done->mvm->last_ebs_successful = false; | |
1668 | ||
d2496221 DS |
1669 | return !iwl_mvm_find_scan_type(scan_done->mvm, scan_done->type); |
1670 | } | |
1671 | ||
1672 | static int iwl_umac_scan_abort_one(struct iwl_mvm *mvm, u32 uid) | |
1673 | { | |
1674 | struct iwl_umac_scan_abort cmd = { | |
1675 | .hdr.size = cpu_to_le16(sizeof(struct iwl_umac_scan_abort) - | |
1676 | sizeof(struct iwl_mvm_umac_cmd_hdr)), | |
1677 | .uid = cpu_to_le32(uid), | |
1678 | }; | |
1679 | ||
1680 | lockdep_assert_held(&mvm->mutex); | |
1681 | ||
1682 | IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); | |
1683 | ||
1684 | return iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_UMAC, 0, sizeof(cmd), &cmd); | |
1685 | } | |
1686 | ||
1687 | static int iwl_umac_scan_stop(struct iwl_mvm *mvm, | |
1688 | enum iwl_umac_scan_uid_type type, bool notify) | |
1689 | { | |
1690 | struct iwl_notification_wait wait_scan_done; | |
1691 | static const u8 scan_done_notif[] = { SCAN_COMPLETE_UMAC, }; | |
1692 | struct iwl_umac_scan_done scan_done = { | |
1693 | .mvm = mvm, | |
1694 | .type = type, | |
1695 | }; | |
1696 | int i, ret = -EIO; | |
1697 | ||
1698 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, | |
1699 | scan_done_notif, | |
1700 | ARRAY_SIZE(scan_done_notif), | |
1701 | iwl_scan_umac_done_check, &scan_done); | |
1702 | ||
1703 | IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); | |
1704 | ||
507e4cda | 1705 | for (i = 0; i < mvm->max_scans; i++) { |
d2496221 DS |
1706 | if (mvm->scan_uid[i] & type) { |
1707 | int err; | |
1708 | ||
1709 | if (iwl_mvm_is_radio_killed(mvm) && | |
1710 | (type & IWL_UMAC_SCAN_UID_REG_SCAN)) { | |
1711 | ieee80211_scan_completed(mvm->hw, true); | |
1712 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1713 | break; | |
1714 | } | |
1715 | ||
1716 | err = iwl_umac_scan_abort_one(mvm, mvm->scan_uid[i]); | |
1717 | if (!err) | |
1718 | ret = 0; | |
1719 | } | |
1720 | } | |
1721 | ||
1722 | if (ret) { | |
1723 | IWL_DEBUG_SCAN(mvm, "Couldn't stop scan\n"); | |
1724 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); | |
1725 | return ret; | |
1726 | } | |
1727 | ||
1728 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
1729 | if (ret) | |
1730 | return ret; | |
1731 | ||
1732 | if (notify) { | |
1733 | if (type & IWL_UMAC_SCAN_UID_SCHED_SCAN) | |
1734 | ieee80211_sched_scan_stopped(mvm->hw); | |
1735 | if (type & IWL_UMAC_SCAN_UID_REG_SCAN) { | |
1736 | ieee80211_scan_completed(mvm->hw, true); | |
1737 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1738 | } | |
1739 | } | |
1740 | ||
1741 | return ret; | |
1742 | } | |
1743 | ||
1744 | int iwl_mvm_scan_size(struct iwl_mvm *mvm) | |
1745 | { | |
1746 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) | |
1747 | return sizeof(struct iwl_scan_req_umac) + | |
1748 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1749 | mvm->fw->ucode_capa.n_scan_channels + | |
1750 | sizeof(struct iwl_scan_req_umac_tail); | |
1751 | ||
65ff556b | 1752 | return sizeof(struct iwl_scan_req_lmac) + |
1f940386 LC |
1753 | sizeof(struct iwl_scan_channel_cfg_lmac) * |
1754 | mvm->fw->ucode_capa.n_scan_channels + | |
1755 | sizeof(struct iwl_scan_probe_req); | |
d2496221 | 1756 | } |
4ffb3650 DS |
1757 | |
1758 | /* | |
1759 | * This function is used in nic restart flow, to inform mac80211 about scans | |
1760 | * that was aborted by restart flow or by an assert. | |
1761 | */ | |
1762 | void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) | |
1763 | { | |
1764 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { | |
963221be AB |
1765 | u32 uid, i; |
1766 | ||
1767 | uid = iwl_mvm_find_first_scan(mvm, IWL_UMAC_SCAN_UID_REG_SCAN); | |
507e4cda | 1768 | if (uid < mvm->max_scans) { |
4ffb3650 | 1769 | ieee80211_scan_completed(mvm->hw, true); |
963221be AB |
1770 | mvm->scan_uid[uid] = 0; |
1771 | } | |
1772 | uid = iwl_mvm_find_first_scan(mvm, | |
1773 | IWL_UMAC_SCAN_UID_SCHED_SCAN); | |
507e4cda | 1774 | if (uid < mvm->max_scans && !mvm->restart_fw) { |
4ffb3650 | 1775 | ieee80211_sched_scan_stopped(mvm->hw); |
963221be AB |
1776 | mvm->scan_uid[uid] = 0; |
1777 | } | |
1778 | ||
1779 | /* We shouldn't have any UIDs still set. Loop over all the | |
1780 | * UIDs to make sure there's nothing left there and warn if | |
1781 | * any is found. | |
1782 | */ | |
507e4cda | 1783 | for (i = 0; i < mvm->max_scans; i++) { |
963221be AB |
1784 | if (WARN_ONCE(mvm->scan_uid[i], |
1785 | "UMAC scan UID %d was not cleaned\n", | |
1786 | mvm->scan_uid[i])) | |
1787 | mvm->scan_uid[i] = 0; | |
1788 | } | |
4ffb3650 | 1789 | } else { |
9af91f46 | 1790 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) |
4ffb3650 | 1791 | ieee80211_scan_completed(mvm->hw, true); |
9af91f46 LC |
1792 | |
1793 | /* Sched scan will be restarted by mac80211 in | |
1794 | * restart_hw, so do not report if FW is about to be | |
1795 | * restarted. | |
1796 | */ | |
1797 | if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && !mvm->restart_fw) | |
1798 | ieee80211_sched_scan_stopped(mvm->hw); | |
4ffb3650 DS |
1799 | } |
1800 | } |