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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 |
a339e918 | 10 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
8ca151b5 JB |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
51368bf7 | 35 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
9af91f46 | 36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
a339e918 | 37 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
38 | * All rights reserved. |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
67 | ||
68 | #include <linux/etherdevice.h> | |
69 | #include <net/mac80211.h> | |
70 | ||
71 | #include "mvm.h" | |
8ca151b5 | 72 | #include "fw-api-scan.h" |
728e825f | 73 | #include "iwl-io.h" |
8ca151b5 | 74 | |
a1ed4025 HD |
75 | #define IWL_DENSE_EBS_SCAN_RATIO 5 |
76 | #define IWL_SPARSE_EBS_SCAN_RATIO 1 | |
8a110d9b | 77 | |
9437e994 DS |
78 | enum iwl_mvm_traffic_load { |
79 | IWL_MVM_TRAFFIC_LOW, | |
80 | IWL_MVM_TRAFFIC_MEDIUM, | |
81 | IWL_MVM_TRAFFIC_HIGH, | |
82 | }; | |
83 | ||
84 | struct iwl_mvm_scan_timing_params { | |
85 | u32 dwell_active; | |
86 | u32 dwell_passive; | |
87 | u32 dwell_fragmented; | |
c3e230b1 | 88 | u32 dwell_extended; |
8a110d9b | 89 | u32 suspend_time; |
9437e994 DS |
90 | u32 max_out_time; |
91 | }; | |
92 | ||
93 | static struct iwl_mvm_scan_timing_params scan_timing[] = { | |
94 | [IWL_SCAN_TYPE_UNASSOC] = { | |
95 | .dwell_active = 10, | |
96 | .dwell_passive = 110, | |
97 | .dwell_fragmented = 44, | |
ca95ff3a | 98 | .dwell_extended = 90, |
9437e994 DS |
99 | .suspend_time = 0, |
100 | .max_out_time = 0, | |
101 | }, | |
102 | [IWL_SCAN_TYPE_WILD] = { | |
103 | .dwell_active = 10, | |
104 | .dwell_passive = 110, | |
105 | .dwell_fragmented = 44, | |
ca95ff3a | 106 | .dwell_extended = 90, |
9437e994 DS |
107 | .suspend_time = 30, |
108 | .max_out_time = 120, | |
109 | }, | |
110 | [IWL_SCAN_TYPE_MILD] = { | |
111 | .dwell_active = 10, | |
112 | .dwell_passive = 110, | |
113 | .dwell_fragmented = 44, | |
ca95ff3a | 114 | .dwell_extended = 90, |
9437e994 DS |
115 | .suspend_time = 120, |
116 | .max_out_time = 120, | |
117 | }, | |
118 | [IWL_SCAN_TYPE_FRAGMENTED] = { | |
119 | .dwell_active = 10, | |
120 | .dwell_passive = 110, | |
121 | .dwell_fragmented = 44, | |
122 | .suspend_time = 95, | |
123 | .max_out_time = 44, | |
124 | }, | |
125 | }; | |
126 | ||
127 | struct iwl_mvm_scan_params { | |
128 | enum iwl_mvm_scan_type type; | |
f7b788b4 | 129 | u32 n_channels; |
283c2491 | 130 | u16 delay; |
f7b788b4 LC |
131 | int n_ssids; |
132 | struct cfg80211_ssid *ssids; | |
133 | struct ieee80211_channel **channels; | |
f7b788b4 LC |
134 | u32 flags; |
135 | u8 *mac_addr; | |
136 | u8 *mac_addr_mask; | |
137 | bool no_cck; | |
138 | bool pass_all; | |
139 | int n_match_sets; | |
45d1b12e | 140 | struct iwl_scan_probe_req preq; |
f7b788b4 | 141 | struct cfg80211_match_set *match_sets; |
cd55ccea AS |
142 | int n_scan_plans; |
143 | struct cfg80211_sched_scan_plan *scan_plans; | |
8a110d9b | 144 | }; |
8ca151b5 | 145 | |
d2496221 DS |
146 | static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) |
147 | { | |
148 | if (mvm->scan_rx_ant != ANT_NONE) | |
149 | return mvm->scan_rx_ant; | |
a0544272 | 150 | return iwl_mvm_get_valid_rx_ant(mvm); |
d2496221 DS |
151 | } |
152 | ||
8ca151b5 JB |
153 | static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) |
154 | { | |
155 | u16 rx_chain; | |
91b05d10 | 156 | u8 rx_ant; |
8ca151b5 | 157 | |
d2496221 | 158 | rx_ant = iwl_mvm_scan_rx_ant(mvm); |
8ca151b5 JB |
159 | rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
160 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; | |
161 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; | |
162 | rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; | |
163 | return cpu_to_le16(rx_chain); | |
164 | } | |
165 | ||
57fbcce3 | 166 | static __le32 iwl_mvm_scan_rxon_flags(enum nl80211_band band) |
8ca151b5 | 167 | { |
57fbcce3 | 168 | if (band == NL80211_BAND_2GHZ) |
8ca151b5 JB |
169 | return cpu_to_le32(PHY_BAND_24); |
170 | else | |
171 | return cpu_to_le32(PHY_BAND_5); | |
172 | } | |
173 | ||
174 | static inline __le32 | |
57fbcce3 | 175 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, |
8ca151b5 JB |
176 | bool no_cck) |
177 | { | |
178 | u32 tx_ant; | |
179 | ||
180 | mvm->scan_last_antenna_idx = | |
a0544272 | 181 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 JB |
182 | mvm->scan_last_antenna_idx); |
183 | tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; | |
184 | ||
57fbcce3 | 185 | if (band == NL80211_BAND_2GHZ && !no_cck) |
8ca151b5 JB |
186 | return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | |
187 | tx_ant); | |
188 | else | |
189 | return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); | |
190 | } | |
191 | ||
8a110d9b AB |
192 | static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
193 | struct ieee80211_vif *vif) | |
61f6325d | 194 | { |
8a110d9b | 195 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
c3f8d0a3 | 196 | int *global_cnt = data; |
61f6325d | 197 | |
1e2ebe0e DS |
198 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && |
199 | mvmvif->phy_ctxt->id < MAX_PHYS) | |
c3f8d0a3 | 200 | *global_cnt += 1; |
8a110d9b AB |
201 | } |
202 | ||
9437e994 DS |
203 | static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) |
204 | { | |
205 | return IWL_MVM_TRAFFIC_LOW; | |
206 | } | |
207 | ||
208 | static enum | |
355346ba | 209 | iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, bool p2p_device) |
8a110d9b | 210 | { |
c3f8d0a3 | 211 | int global_cnt = 0; |
9437e994 DS |
212 | enum iwl_mvm_traffic_load load; |
213 | bool low_latency; | |
8a110d9b AB |
214 | |
215 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
216 | IEEE80211_IFACE_ITER_NORMAL, | |
217 | iwl_mvm_scan_condition_iterator, | |
c3f8d0a3 | 218 | &global_cnt); |
c3f8d0a3 | 219 | if (!global_cnt) |
9437e994 | 220 | return IWL_SCAN_TYPE_UNASSOC; |
ef67f18d | 221 | |
9437e994 DS |
222 | load = iwl_mvm_get_traffic_load(mvm); |
223 | low_latency = iwl_mvm_low_latency(mvm); | |
6bcb00f6 | 224 | |
355346ba | 225 | if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && !p2p_device && |
9437e994 DS |
226 | fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) |
227 | return IWL_SCAN_TYPE_FRAGMENTED; | |
190f1029 | 228 | |
9437e994 DS |
229 | if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) |
230 | return IWL_SCAN_TYPE_MILD; | |
0616c62c | 231 | |
9437e994 | 232 | return IWL_SCAN_TYPE_WILD; |
61f6325d HD |
233 | } |
234 | ||
73897bd1 AO |
235 | static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
236 | { | |
237 | /* require rrm scan whenever the fw supports it */ | |
859d914c JB |
238 | return fw_has_capa(&mvm->fw->ucode_capa, |
239 | IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); | |
73897bd1 AO |
240 | } |
241 | ||
999d2568 | 242 | static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) |
48849a41 AO |
243 | { |
244 | int max_probe_len; | |
245 | ||
1f940386 | 246 | max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; |
48849a41 AO |
247 | |
248 | /* we create the 802.11 header and SSID element */ | |
249 | max_probe_len -= 24 + 2; | |
250 | ||
66dc5272 AO |
251 | /* DS parameter set element is added on 2.4GHZ band if required */ |
252 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
253 | max_probe_len -= 3; | |
254 | ||
48849a41 AO |
255 | return max_probe_len; |
256 | } | |
257 | ||
999d2568 | 258 | int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) |
48849a41 | 259 | { |
999d2568 | 260 | int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); |
48849a41 | 261 | |
48849a41 AO |
262 | /* TODO: [BUG] This function should return the maximum allowed size of |
263 | * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs | |
264 | * in the same command. So the correct implementation of this function | |
265 | * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan | |
266 | * command has only 512 bytes and it would leave us with about 240 | |
267 | * bytes for scan IEs, which is clearly not enough. So meanwhile | |
268 | * we will report an incorrect value. This may result in a failure to | |
269 | * issue a scan in unified_scan_lmac and unified_sched_scan_lmac | |
270 | * functions with -ENOBUFS, if a large enough probe will be provided. | |
271 | */ | |
272 | return max_ie_len; | |
273 | } | |
274 | ||
1fa1bcc0 AS |
275 | static u8 *iwl_mvm_dump_channel_list(struct iwl_scan_results_notif *res, |
276 | int num_res, u8 *buf, size_t buf_size) | |
277 | { | |
278 | int i; | |
279 | u8 *pos = buf, *end = buf + buf_size; | |
280 | ||
281 | for (i = 0; pos < end && i < num_res; i++) | |
282 | pos += snprintf(pos, end - pos, " %u", res[i].channel); | |
283 | ||
284 | /* terminate the string in case the buffer was too short */ | |
285 | *(buf + buf_size - 1) = '\0'; | |
286 | ||
287 | return buf; | |
288 | } | |
289 | ||
0416841d JB |
290 | void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
291 | struct iwl_rx_cmd_buffer *rxb) | |
e5d74646 AB |
292 | { |
293 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1083fd73 | 294 | struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; |
1fa1bcc0 | 295 | u8 buf[256]; |
e5d74646 AB |
296 | |
297 | IWL_DEBUG_SCAN(mvm, | |
1fa1bcc0 AS |
298 | "Scan offload iteration complete: status=0x%x scanned channels=%d channels list: %s\n", |
299 | notif->status, notif->scanned_channels, | |
300 | iwl_mvm_dump_channel_list(notif->results, | |
301 | notif->scanned_channels, buf, | |
302 | sizeof(buf))); | |
a339e918 LC |
303 | |
304 | if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { | |
305 | IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); | |
306 | ieee80211_sched_scan_results(mvm->hw); | |
307 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; | |
308 | } | |
e5d74646 AB |
309 | } |
310 | ||
0416841d JB |
311 | void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, |
312 | struct iwl_rx_cmd_buffer *rxb) | |
35a000b7 | 313 | { |
d2496221 DS |
314 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); |
315 | ieee80211_sched_scan_results(mvm->hw); | |
35a000b7 DS |
316 | } |
317 | ||
f0bf8593 DS |
318 | static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) |
319 | { | |
320 | switch (status) { | |
321 | case IWL_SCAN_EBS_SUCCESS: | |
322 | return "successful"; | |
323 | case IWL_SCAN_EBS_INACTIVE: | |
324 | return "inactive"; | |
325 | case IWL_SCAN_EBS_FAILED: | |
326 | case IWL_SCAN_EBS_CHAN_NOT_FOUND: | |
327 | default: | |
328 | return "failed"; | |
329 | } | |
330 | } | |
331 | ||
0416841d JB |
332 | void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, |
333 | struct iwl_rx_cmd_buffer *rxb) | |
35a000b7 DS |
334 | { |
335 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
9af91f46 LC |
336 | struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; |
337 | bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); | |
fb98be5e | 338 | |
72a33568 LC |
339 | /* If this happens, the firmware has mistakenly sent an LMAC |
340 | * notification during UMAC scans -- warn and ignore it. | |
341 | */ | |
342 | if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, | |
343 | IWL_UCODE_TLV_CAPA_UMAC_SCAN))) | |
344 | return; | |
345 | ||
a6623e84 JB |
346 | /* scan status must be locked for proper checking */ |
347 | lockdep_assert_held(&mvm->mutex); | |
348 | ||
9af91f46 LC |
349 | /* We first check if we were stopping a scan, in which case we |
350 | * just clear the stopping flag. Then we check if it was a | |
351 | * firmware initiated stop, in which case we need to inform | |
352 | * mac80211. | |
353 | * Note that we can have a stopping and a running scan | |
354 | * simultaneously, but we can't have two different types of | |
355 | * scans stopping or running at the same time (since LMAC | |
356 | * doesn't support it). | |
357 | */ | |
358 | ||
359 | if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { | |
360 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); | |
361 | ||
a7b3bc91 | 362 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
9af91f46 | 363 | aborted ? "aborted" : "completed", |
a7b3bc91 AB |
364 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
365 | IWL_DEBUG_SCAN(mvm, | |
366 | "Last line %d, Last iteration %d, Time after last iteration %d\n", | |
1a84e771 AB |
367 | scan_notif->last_schedule_line, |
368 | scan_notif->last_schedule_iteration, | |
369 | __le32_to_cpu(scan_notif->time_after_last_iter)); | |
e820c2da | 370 | |
9af91f46 LC |
371 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; |
372 | } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { | |
373 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", | |
374 | aborted ? "aborted" : "completed", | |
f0bf8593 | 375 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
35a000b7 | 376 | |
9af91f46 LC |
377 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; |
378 | } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { | |
379 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); | |
380 | ||
a7b3bc91 | 381 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
9af91f46 | 382 | aborted ? "aborted" : "completed", |
a7b3bc91 AB |
383 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
384 | IWL_DEBUG_SCAN(mvm, | |
385 | "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", | |
1a84e771 AB |
386 | scan_notif->last_schedule_line, |
387 | scan_notif->last_schedule_iteration, | |
388 | __le32_to_cpu(scan_notif->time_after_last_iter)); | |
9af91f46 LC |
389 | |
390 | mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; | |
33ea27f6 | 391 | ieee80211_sched_scan_stopped(mvm->hw); |
a339e918 | 392 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
9af91f46 LC |
393 | } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
394 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", | |
395 | aborted ? "aborted" : "completed", | |
f0bf8593 | 396 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
9af91f46 LC |
397 | |
398 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; | |
fb98be5e | 399 | ieee80211_scan_completed(mvm->hw, |
1f940386 | 400 | scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
4ff78181 | 401 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
728e825f LC |
402 | del_timer(&mvm->scan_timer); |
403 | } else { | |
404 | IWL_ERR(mvm, | |
405 | "got scan complete notification but no scan is running\n"); | |
33ea27f6 | 406 | } |
35a000b7 | 407 | |
f0bf8593 DS |
408 | mvm->last_ebs_successful = |
409 | scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || | |
410 | scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; | |
35a000b7 DS |
411 | } |
412 | ||
35a000b7 DS |
413 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) |
414 | { | |
415 | int i; | |
416 | ||
417 | for (i = 0; i < PROBE_OPTION_MAX; i++) { | |
418 | if (!ssid_list[i].len) | |
419 | break; | |
420 | if (ssid_list[i].len == ssid_len && | |
421 | !memcmp(ssid_list->ssid, ssid, ssid_len)) | |
422 | return i; | |
423 | } | |
424 | return -1; | |
425 | } | |
426 | ||
e2ec4f6d LC |
427 | /* We insert the SSIDs in an inverted order, because the FW will |
428 | * invert it back. | |
429 | */ | |
430 | static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, | |
431 | struct iwl_ssid_ie *ssids, | |
432 | u32 *ssid_bitmap) | |
35a000b7 DS |
433 | { |
434 | int i, j; | |
435 | int index; | |
436 | ||
437 | /* | |
438 | * copy SSIDs from match list. | |
439 | * iwl_config_sched_scan_profiles() uses the order of these ssids to | |
440 | * config match list. | |
441 | */ | |
1c1b5b26 LC |
442 | for (i = 0, j = params->n_match_sets - 1; |
443 | j >= 0 && i < PROBE_OPTION_MAX; | |
444 | i++, j--) { | |
ea73cbce | 445 | /* skip empty SSID matchsets */ |
1c1b5b26 | 446 | if (!params->match_sets[j].ssid.ssid_len) |
ea73cbce | 447 | continue; |
e2ec4f6d LC |
448 | ssids[i].id = WLAN_EID_SSID; |
449 | ssids[i].len = params->match_sets[j].ssid.ssid_len; | |
450 | memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, | |
451 | ssids[i].len); | |
35a000b7 DS |
452 | } |
453 | ||
454 | /* add SSIDs from scan SSID list */ | |
455 | *ssid_bitmap = 0; | |
1c1b5b26 LC |
456 | for (j = params->n_ssids - 1; |
457 | j >= 0 && i < PROBE_OPTION_MAX; | |
458 | i++, j--) { | |
f7b788b4 LC |
459 | index = iwl_ssid_exist(params->ssids[j].ssid, |
460 | params->ssids[j].ssid_len, | |
e2ec4f6d | 461 | ssids); |
35a000b7 | 462 | if (index < 0) { |
e2ec4f6d LC |
463 | ssids[i].id = WLAN_EID_SSID; |
464 | ssids[i].len = params->ssids[j].ssid_len; | |
465 | memcpy(ssids[i].ssid, params->ssids[j].ssid, | |
466 | ssids[i].len); | |
467 | *ssid_bitmap |= BIT(i); | |
35a000b7 | 468 | } else { |
e2ec4f6d | 469 | *ssid_bitmap |= BIT(index); |
35a000b7 DS |
470 | } |
471 | } | |
472 | } | |
473 | ||
416c9b50 LC |
474 | static int |
475 | iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, | |
476 | struct cfg80211_sched_scan_request *req) | |
35a000b7 DS |
477 | { |
478 | struct iwl_scan_offload_profile *profile; | |
479 | struct iwl_scan_offload_profile_cfg *profile_cfg; | |
480 | struct iwl_scan_offload_blacklist *blacklist; | |
481 | struct iwl_host_cmd cmd = { | |
482 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, | |
35a000b7 DS |
483 | .len[1] = sizeof(*profile_cfg), |
484 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
485 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, | |
486 | }; | |
487 | int blacklist_len; | |
488 | int i; | |
489 | int ret; | |
490 | ||
491 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) | |
46eebec9 | 492 | return -EIO; |
35a000b7 DS |
493 | |
494 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) | |
495 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; | |
496 | else | |
497 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; | |
498 | ||
499 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); | |
500 | if (!blacklist) | |
501 | return -ENOMEM; | |
502 | ||
503 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); | |
504 | if (!profile_cfg) { | |
505 | ret = -ENOMEM; | |
506 | goto free_blacklist; | |
507 | } | |
508 | ||
509 | cmd.data[0] = blacklist; | |
510 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; | |
511 | cmd.data[1] = profile_cfg; | |
512 | ||
513 | /* No blacklist configuration */ | |
514 | ||
515 | profile_cfg->num_profiles = req->n_match_sets; | |
516 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; | |
517 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; | |
518 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; | |
6e0bbe5e DS |
519 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
520 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; | |
35a000b7 DS |
521 | |
522 | for (i = 0; i < req->n_match_sets; i++) { | |
523 | profile = &profile_cfg->profiles[i]; | |
524 | profile->ssid_index = i; | |
525 | /* Support any cipher and auth algorithm */ | |
526 | profile->unicast_cipher = 0xff; | |
527 | profile->auth_alg = 0xff; | |
528 | profile->network_type = IWL_NETWORK_TYPE_ANY; | |
529 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; | |
530 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; | |
531 | } | |
532 | ||
533 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); | |
534 | ||
535 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
536 | kfree(profile_cfg); | |
537 | free_blacklist: | |
538 | kfree(blacklist); | |
539 | ||
540 | return ret; | |
541 | } | |
542 | ||
d2496221 DS |
543 | static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, |
544 | struct cfg80211_sched_scan_request *req) | |
545 | { | |
546 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
547 | IWL_DEBUG_SCAN(mvm, | |
548 | "Sending scheduled scan with filtering, n_match_sets %d\n", | |
549 | req->n_match_sets); | |
a339e918 | 550 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
d2496221 DS |
551 | return false; |
552 | } | |
553 | ||
554 | IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); | |
a339e918 LC |
555 | |
556 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; | |
d2496221 DS |
557 | return true; |
558 | } | |
559 | ||
f2461796 | 560 | static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) |
35a000b7 DS |
561 | { |
562 | int ret; | |
563 | struct iwl_host_cmd cmd = { | |
564 | .id = SCAN_OFFLOAD_ABORT_CMD, | |
35a000b7 DS |
565 | }; |
566 | u32 status; | |
567 | ||
35a000b7 DS |
568 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); |
569 | if (ret) | |
570 | return ret; | |
571 | ||
572 | if (status != CAN_ABORT_STATUS) { | |
573 | /* | |
574 | * The scan abort will return 1 for success or | |
575 | * 2 for "failure". A failure condition can be | |
576 | * due to simply not being in an active scan which | |
577 | * can occur if we send the scan abort before the | |
578 | * microcode has notified us that a scan is completed. | |
579 | */ | |
580 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); | |
33ea27f6 | 581 | ret = -ENOENT; |
35a000b7 DS |
582 | } |
583 | ||
584 | return ret; | |
585 | } | |
586 | ||
65ff556b LC |
587 | static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, |
588 | struct iwl_scan_req_tx_cmd *tx_cmd, | |
589 | bool no_cck) | |
fb98be5e DS |
590 | { |
591 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
592 | TX_CMD_FLG_BT_DIS); | |
593 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
57fbcce3 | 594 | NL80211_BAND_2GHZ, |
fb98be5e DS |
595 | no_cck); |
596 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; | |
597 | ||
598 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
599 | TX_CMD_FLG_BT_DIS); | |
600 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
57fbcce3 | 601 | NL80211_BAND_5GHZ, |
fb98be5e DS |
602 | no_cck); |
603 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; | |
604 | } | |
605 | ||
606 | static void | |
607 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, | |
608 | struct ieee80211_channel **channels, | |
609 | int n_channels, u32 ssid_bitmap, | |
65ff556b | 610 | struct iwl_scan_req_lmac *cmd) |
fb98be5e DS |
611 | { |
612 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; | |
613 | int i; | |
614 | ||
615 | for (i = 0; i < n_channels; i++) { | |
616 | channel_cfg[i].channel_num = | |
617 | cpu_to_le16(channels[i]->hw_value); | |
618 | channel_cfg[i].iter_count = cpu_to_le16(1); | |
619 | channel_cfg[i].iter_interval = 0; | |
620 | channel_cfg[i].flags = | |
621 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | | |
622 | ssid_bitmap); | |
623 | } | |
624 | } | |
625 | ||
66dc5272 AO |
626 | static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, |
627 | size_t len, u8 *const pos) | |
628 | { | |
629 | static const u8 before_ds_params[] = { | |
630 | WLAN_EID_SSID, | |
631 | WLAN_EID_SUPP_RATES, | |
632 | WLAN_EID_REQUEST, | |
633 | WLAN_EID_EXT_SUPP_RATES, | |
634 | }; | |
635 | size_t offs; | |
636 | u8 *newpos = pos; | |
637 | ||
638 | if (!iwl_mvm_rrm_scan_needed(mvm)) { | |
639 | memcpy(newpos, ies, len); | |
640 | return newpos + len; | |
641 | } | |
642 | ||
643 | offs = ieee80211_ie_split(ies, len, | |
644 | before_ds_params, | |
645 | ARRAY_SIZE(before_ds_params), | |
646 | 0); | |
647 | ||
648 | memcpy(newpos, ies, offs); | |
649 | newpos += offs; | |
650 | ||
651 | /* Add a placeholder for DS Parameter Set element */ | |
652 | *newpos++ = WLAN_EID_DS_PARAMS; | |
653 | *newpos++ = 1; | |
654 | *newpos++ = 0; | |
655 | ||
656 | memcpy(newpos, ies + offs, len - offs); | |
657 | newpos += len - offs; | |
658 | ||
659 | return newpos; | |
660 | } | |
661 | ||
fb98be5e | 662 | static void |
65ff556b LC |
663 | iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
664 | struct ieee80211_scan_ies *ies, | |
45d1b12e | 665 | struct iwl_mvm_scan_params *params) |
fb98be5e | 666 | { |
45d1b12e | 667 | struct ieee80211_mgmt *frame = (void *)params->preq.buf; |
66dc5272 | 668 | u8 *pos, *newpos; |
45d1b12e LC |
669 | const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
670 | params->mac_addr : NULL; | |
fb98be5e | 671 | |
effd05ac JB |
672 | /* |
673 | * Unfortunately, right now the offload scan doesn't support randomising | |
674 | * within the firmware, so until the firmware API is ready we implement | |
675 | * it in the driver. This means that the scan iterations won't really be | |
676 | * random, only when it's restarted, but at least that helps a bit. | |
677 | */ | |
678 | if (mac_addr) | |
45d1b12e LC |
679 | get_random_mask_addr(frame->sa, mac_addr, |
680 | params->mac_addr_mask); | |
effd05ac JB |
681 | else |
682 | memcpy(frame->sa, vif->addr, ETH_ALEN); | |
683 | ||
fb98be5e DS |
684 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
685 | eth_broadcast_addr(frame->da); | |
fb98be5e DS |
686 | eth_broadcast_addr(frame->bssid); |
687 | frame->seq_ctrl = 0; | |
688 | ||
689 | pos = frame->u.probe_req.variable; | |
690 | *pos++ = WLAN_EID_SSID; | |
691 | *pos++ = 0; | |
692 | ||
45d1b12e LC |
693 | params->preq.mac_header.offset = 0; |
694 | params->preq.mac_header.len = cpu_to_le16(24 + 2); | |
fb98be5e | 695 | |
66dc5272 AO |
696 | /* Insert ds parameter set element on 2.4 GHz band */ |
697 | newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, | |
57fbcce3 JB |
698 | ies->ies[NL80211_BAND_2GHZ], |
699 | ies->len[NL80211_BAND_2GHZ], | |
66dc5272 | 700 | pos); |
45d1b12e LC |
701 | params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); |
702 | params->preq.band_data[0].len = cpu_to_le16(newpos - pos); | |
66dc5272 | 703 | pos = newpos; |
fb98be5e | 704 | |
57fbcce3 JB |
705 | memcpy(pos, ies->ies[NL80211_BAND_5GHZ], |
706 | ies->len[NL80211_BAND_5GHZ]); | |
45d1b12e LC |
707 | params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); |
708 | params->preq.band_data[1].len = | |
57fbcce3 JB |
709 | cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); |
710 | pos += ies->len[NL80211_BAND_5GHZ]; | |
fb98be5e DS |
711 | |
712 | memcpy(pos, ies->common_ies, ies->common_ie_len); | |
45d1b12e LC |
713 | params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); |
714 | params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); | |
fb98be5e DS |
715 | } |
716 | ||
d7afbfc4 AS |
717 | static __le32 iwl_mvm_scan_priority(struct iwl_mvm *mvm, |
718 | enum iwl_scan_priority_ext prio) | |
719 | { | |
859d914c JB |
720 | if (fw_has_api(&mvm->fw->ucode_capa, |
721 | IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY)) | |
d7afbfc4 AS |
722 | return cpu_to_le32(prio); |
723 | ||
724 | if (prio <= IWL_SCAN_PRIORITY_EXT_2) | |
725 | return cpu_to_le32(IWL_SCAN_PRIORITY_LOW); | |
726 | ||
727 | if (prio <= IWL_SCAN_PRIORITY_EXT_4) | |
728 | return cpu_to_le32(IWL_SCAN_PRIORITY_MEDIUM); | |
729 | ||
730 | return cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
731 | } | |
732 | ||
133c8259 LC |
733 | static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, |
734 | struct iwl_scan_req_lmac *cmd, | |
735 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 736 | { |
9437e994 DS |
737 | cmd->active_dwell = scan_timing[params->type].dwell_active; |
738 | cmd->passive_dwell = scan_timing[params->type].dwell_passive; | |
739 | cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented; | |
c3e230b1 | 740 | cmd->extended_dwell = scan_timing[params->type].dwell_extended; |
9437e994 DS |
741 | cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); |
742 | cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); | |
d7afbfc4 | 743 | cmd->scan_prio = iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); |
fb98be5e DS |
744 | } |
745 | ||
999d2568 LC |
746 | static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, |
747 | struct ieee80211_scan_ies *ies, | |
748 | int n_channels) | |
749 | { | |
750 | return ((n_ssids <= PROBE_OPTION_MAX) && | |
751 | (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & | |
752 | (ies->common_ie_len + | |
753 | ies->len[NL80211_BAND_2GHZ] + | |
754 | ies->len[NL80211_BAND_5GHZ] <= | |
755 | iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); | |
756 | } | |
757 | ||
15286e26 | 758 | static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, |
cd55ccea | 759 | struct ieee80211_vif *vif) |
fb98be5e | 760 | { |
7d7de1e9 | 761 | const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; |
fb98be5e | 762 | |
7d7de1e9 LC |
763 | /* We can only use EBS if: |
764 | * 1. the feature is supported; | |
765 | * 2. the last EBS was successful; | |
15286e26 DS |
766 | * 3. if only single scan, the single scan EBS API is supported; |
767 | * 4. it's not a p2p find operation. | |
7d7de1e9 LC |
768 | */ |
769 | return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && | |
770 | mvm->last_ebs_successful && | |
15286e26 | 771 | vif->type != NL80211_IFTYPE_P2P_DEVICE); |
fb98be5e DS |
772 | } |
773 | ||
c3e230b1 DS |
774 | static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) |
775 | { | |
776 | return params->n_scan_plans == 1 && | |
777 | params->scan_plans[0].iterations == 1; | |
778 | } | |
779 | ||
87515408 | 780 | static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, |
c3e230b1 DS |
781 | struct iwl_mvm_scan_params *params, |
782 | struct ieee80211_vif *vif) | |
87515408 LC |
783 | { |
784 | int flags = 0; | |
785 | ||
786 | if (params->n_ssids == 0) | |
787 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
788 | ||
789 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) | |
790 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
791 | ||
9437e994 | 792 | if (params->type == IWL_SCAN_TYPE_FRAGMENTED) |
87515408 LC |
793 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; |
794 | ||
795 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
796 | flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; | |
797 | ||
798 | if (params->pass_all) | |
799 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
800 | else | |
801 | flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; | |
802 | ||
803 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
804 | if (mvm->scan_iter_notif_enabled) | |
805 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; | |
806 | #endif | |
807 | ||
a339e918 LC |
808 | if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) |
809 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; | |
810 | ||
c3e230b1 | 811 | if (iwl_mvm_is_regular_scan(params) && |
ca95ff3a DS |
812 | vif->type != NL80211_IFTYPE_P2P_DEVICE && |
813 | params->type != IWL_SCAN_TYPE_FRAGMENTED) | |
c3e230b1 DS |
814 | flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; |
815 | ||
87515408 LC |
816 | return flags; |
817 | } | |
818 | ||
7d7de1e9 LC |
819 | static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
820 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 821 | { |
65ff556b | 822 | struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; |
45d1b12e LC |
823 | struct iwl_scan_probe_req *preq = |
824 | (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * | |
825 | mvm->fw->ucode_capa.n_scan_channels); | |
87515408 | 826 | u32 ssid_bitmap = 0; |
cd55ccea | 827 | int i; |
fb98be5e DS |
828 | |
829 | lockdep_assert_held(&mvm->mutex); | |
830 | ||
133c8259 LC |
831 | memset(cmd, 0, ksize(cmd)); |
832 | ||
cd55ccea AS |
833 | if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) |
834 | return -EINVAL; | |
835 | ||
133c8259 | 836 | iwl_mvm_scan_lmac_dwell(mvm, cmd, params); |
fb98be5e | 837 | |
133c8259 LC |
838 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
839 | cmd->iter_num = cpu_to_le32(1); | |
f7b788b4 | 840 | cmd->n_channels = (u8)params->n_channels; |
fb98be5e | 841 | |
f7b788b4 | 842 | cmd->delay = cpu_to_le32(params->delay); |
2250fd94 | 843 | |
c3e230b1 DS |
844 | cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, |
845 | vif)); | |
fb98be5e | 846 | |
f7b788b4 | 847 | cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band); |
fb98be5e DS |
848 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
849 | MAC_FILTER_IN_BEACON); | |
f7b788b4 | 850 | iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); |
e2ec4f6d LC |
851 | iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); |
852 | ||
853 | /* this API uses bits 1-20 instead of 0-19 */ | |
854 | ssid_bitmap <<= 1; | |
fb98be5e | 855 | |
cd55ccea | 856 | for (i = 0; i < params->n_scan_plans; i++) { |
cd55ccea AS |
857 | struct cfg80211_sched_scan_plan *scan_plan = |
858 | ¶ms->scan_plans[i]; | |
859 | ||
cd55ccea AS |
860 | cmd->schedule[i].delay = |
861 | cpu_to_le16(scan_plan->interval); | |
862 | cmd->schedule[i].iterations = scan_plan->iterations; | |
863 | cmd->schedule[i].full_scan_mul = 1; | |
864 | } | |
865 | ||
866 | /* | |
867 | * If the number of iterations of the last scan plan is set to | |
868 | * zero, it should run infinitely. However, this is not always the case. | |
869 | * For example, when regular scan is requested the driver sets one scan | |
870 | * plan with one iteration. | |
871 | */ | |
872 | if (!cmd->schedule[i - 1].iterations) | |
46eebec9 | 873 | cmd->schedule[i - 1].iterations = 0xff; |
fb98be5e | 874 | |
cd55ccea | 875 | if (iwl_mvm_scan_use_ebs(mvm, vif)) { |
1f9c418f DS |
876 | cmd->channel_opt[0].flags = |
877 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
878 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
879 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
880 | cmd->channel_opt[0].non_ebs_ratio = | |
881 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); | |
882 | cmd->channel_opt[1].flags = | |
883 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
884 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
885 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
886 | cmd->channel_opt[1].non_ebs_ratio = | |
887 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); | |
888 | } | |
889 | ||
f7b788b4 LC |
890 | iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, |
891 | params->n_channels, ssid_bitmap, cmd); | |
fb98be5e | 892 | |
45d1b12e | 893 | *preq = params->preq; |
fb98be5e | 894 | |
8df3e68f | 895 | return 0; |
fb98be5e DS |
896 | } |
897 | ||
d2496221 DS |
898 | static int rate_to_scan_rate_flag(unsigned int rate) |
899 | { | |
900 | static const int rate_to_scan_rate[IWL_RATE_COUNT] = { | |
901 | [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, | |
902 | [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, | |
903 | [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, | |
904 | [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, | |
905 | [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, | |
906 | [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, | |
907 | [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, | |
908 | [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, | |
909 | [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, | |
910 | [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, | |
911 | [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, | |
912 | [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, | |
913 | }; | |
914 | ||
915 | return rate_to_scan_rate[rate]; | |
916 | } | |
917 | ||
918 | static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) | |
919 | { | |
920 | struct ieee80211_supported_band *band; | |
921 | unsigned int rates = 0; | |
922 | int i; | |
923 | ||
57fbcce3 | 924 | band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; |
d2496221 DS |
925 | for (i = 0; i < band->n_bitrates; i++) |
926 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
57fbcce3 | 927 | band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; |
d2496221 DS |
928 | for (i = 0; i < band->n_bitrates; i++) |
929 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
930 | ||
931 | /* Set both basic rates and supported rates */ | |
932 | rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); | |
933 | ||
934 | return cpu_to_le32(rates); | |
935 | } | |
936 | ||
937 | int iwl_mvm_config_scan(struct iwl_mvm *mvm) | |
938 | { | |
d2496221 DS |
939 | struct iwl_scan_config *scan_config; |
940 | struct ieee80211_supported_band *band; | |
941 | int num_channels = | |
57fbcce3 JB |
942 | mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + |
943 | mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; | |
88742c9e | 944 | int ret, i, j = 0, cmd_size; |
d2496221 | 945 | struct iwl_host_cmd cmd = { |
88742c9e | 946 | .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), |
d2496221 | 947 | }; |
355346ba | 948 | enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false); |
d2496221 DS |
949 | |
950 | if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) | |
951 | return -ENOBUFS; | |
952 | ||
1c4e15a2 MS |
953 | if (type == mvm->scan_type) { |
954 | IWL_DEBUG_SCAN(mvm, | |
955 | "Ignoring UMAC scan config of the same type\n"); | |
355346ba | 956 | return 0; |
1c4e15a2 | 957 | } |
355346ba | 958 | |
d2496221 DS |
959 | cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels; |
960 | ||
961 | scan_config = kzalloc(cmd_size, GFP_KERNEL); | |
962 | if (!scan_config) | |
963 | return -ENOMEM; | |
964 | ||
d2496221 DS |
965 | scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE | |
966 | SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | | |
967 | SCAN_CONFIG_FLAG_SET_TX_CHAINS | | |
968 | SCAN_CONFIG_FLAG_SET_RX_CHAINS | | |
5db81fd4 | 969 | SCAN_CONFIG_FLAG_SET_AUX_STA_ID | |
d2496221 DS |
970 | SCAN_CONFIG_FLAG_SET_ALL_TIMES | |
971 | SCAN_CONFIG_FLAG_SET_LEGACY_RATES | | |
972 | SCAN_CONFIG_FLAG_SET_MAC_ADDR | | |
973 | SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| | |
f9d71644 | 974 | SCAN_CONFIG_N_CHANNELS(num_channels) | |
355346ba | 975 | (type == IWL_SCAN_TYPE_FRAGMENTED ? |
f9d71644 AS |
976 | SCAN_CONFIG_FLAG_SET_FRAGMENTED : |
977 | SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED)); | |
a0544272 | 978 | scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
d2496221 DS |
979 | scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
980 | scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm); | |
355346ba AS |
981 | scan_config->out_of_channel_time = |
982 | cpu_to_le32(scan_timing[type].max_out_time); | |
983 | scan_config->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); | |
984 | scan_config->dwell_active = scan_timing[type].dwell_active; | |
985 | scan_config->dwell_passive = scan_timing[type].dwell_passive; | |
986 | scan_config->dwell_fragmented = scan_timing[type].dwell_fragmented; | |
c3e230b1 | 987 | scan_config->dwell_extended = scan_timing[type].dwell_extended; |
d2496221 DS |
988 | |
989 | memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); | |
990 | ||
991 | scan_config->bcast_sta_id = mvm->aux_sta.sta_id; | |
992 | scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS | | |
993 | IWL_CHANNEL_FLAG_ACCURATE_EBS | | |
994 | IWL_CHANNEL_FLAG_EBS_ADD | | |
995 | IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; | |
996 | ||
57fbcce3 | 997 | band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; |
d2496221 | 998 | for (i = 0; i < band->n_channels; i++, j++) |
a25d40e2 | 999 | scan_config->channel_array[j] = band->channels[i].hw_value; |
57fbcce3 | 1000 | band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; |
d2496221 | 1001 | for (i = 0; i < band->n_channels; i++, j++) |
a25d40e2 | 1002 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
1003 | |
1004 | cmd.data[0] = scan_config; | |
1005 | cmd.len[0] = cmd_size; | |
1006 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; | |
1007 | ||
1008 | IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); | |
1009 | ||
1010 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
355346ba AS |
1011 | if (!ret) |
1012 | mvm->scan_type = type; | |
d2496221 DS |
1013 | |
1014 | kfree(scan_config); | |
1015 | return ret; | |
1016 | } | |
1017 | ||
6185af2a | 1018 | static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) |
d2496221 DS |
1019 | { |
1020 | int i; | |
1021 | ||
507e4cda | 1022 | for (i = 0; i < mvm->max_scans; i++) |
6185af2a | 1023 | if (mvm->scan_uid_status[i] == status) |
d2496221 DS |
1024 | return i; |
1025 | ||
6185af2a | 1026 | return -ENOENT; |
d2496221 DS |
1027 | } |
1028 | ||
133c8259 | 1029 | static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, |
d2496221 DS |
1030 | struct iwl_scan_req_umac *cmd, |
1031 | struct iwl_mvm_scan_params *params) | |
1032 | { | |
c3e230b1 | 1033 | cmd->extended_dwell = scan_timing[params->type].dwell_extended; |
9437e994 DS |
1034 | cmd->active_dwell = scan_timing[params->type].dwell_active; |
1035 | cmd->passive_dwell = scan_timing[params->type].dwell_passive; | |
1036 | cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented; | |
1037 | cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); | |
1038 | cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); | |
d7afbfc4 AS |
1039 | cmd->scan_priority = |
1040 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); | |
133c8259 | 1041 | |
cd55ccea | 1042 | if (iwl_mvm_is_regular_scan(params)) |
d7afbfc4 AS |
1043 | cmd->ooc_priority = |
1044 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); | |
133c8259 | 1045 | else |
d7afbfc4 AS |
1046 | cmd->ooc_priority = |
1047 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_2); | |
d2496221 DS |
1048 | } |
1049 | ||
1050 | static void | |
1051 | iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, | |
1052 | struct ieee80211_channel **channels, | |
1053 | int n_channels, u32 ssid_bitmap, | |
1054 | struct iwl_scan_req_umac *cmd) | |
1055 | { | |
1056 | struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data; | |
1057 | int i; | |
1058 | ||
1059 | for (i = 0; i < n_channels; i++) { | |
1060 | channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); | |
1061 | channel_cfg[i].channel_num = channels[i]->hw_value; | |
1062 | channel_cfg[i].iter_count = 1; | |
1063 | channel_cfg[i].iter_interval = 0; | |
1064 | } | |
1065 | } | |
1066 | ||
6f4dcc76 | 1067 | static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, |
c3e230b1 DS |
1068 | struct iwl_mvm_scan_params *params, |
1069 | struct ieee80211_vif *vif) | |
d2496221 DS |
1070 | { |
1071 | int flags = 0; | |
1072 | ||
6f4dcc76 | 1073 | if (params->n_ssids == 0) |
d2496221 DS |
1074 | flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; |
1075 | ||
6f4dcc76 | 1076 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
d2496221 DS |
1077 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; |
1078 | ||
9437e994 | 1079 | if (params->type == IWL_SCAN_TYPE_FRAGMENTED) |
d2496221 DS |
1080 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; |
1081 | ||
1082 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
1083 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; | |
1084 | ||
6f4dcc76 LC |
1085 | if (params->pass_all) |
1086 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; | |
1087 | else | |
1088 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; | |
1089 | ||
cd55ccea | 1090 | if (!iwl_mvm_is_regular_scan(params)) |
6f4dcc76 LC |
1091 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; |
1092 | ||
ee9219b2 AS |
1093 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1094 | if (mvm->scan_iter_notif_enabled) | |
1095 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; | |
1096 | #endif | |
c3e230b1 | 1097 | |
a339e918 LC |
1098 | if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) |
1099 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; | |
1100 | ||
c3e230b1 | 1101 | if (iwl_mvm_is_regular_scan(params) && |
ca95ff3a DS |
1102 | vif->type != NL80211_IFTYPE_P2P_DEVICE && |
1103 | params->type != IWL_SCAN_TYPE_FRAGMENTED) | |
c3e230b1 DS |
1104 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; |
1105 | ||
d2496221 DS |
1106 | return flags; |
1107 | } | |
1108 | ||
6749dd80 | 1109 | static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
6185af2a LC |
1110 | struct iwl_mvm_scan_params *params, |
1111 | int type) | |
d2496221 | 1112 | { |
d2496221 DS |
1113 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
1114 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + | |
1115 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1116 | mvm->fw->ucode_capa.n_scan_channels; | |
cd55ccea | 1117 | int uid, i; |
c8660dd5 | 1118 | u32 ssid_bitmap = 0; |
d2496221 DS |
1119 | |
1120 | lockdep_assert_held(&mvm->mutex); | |
1121 | ||
cd55ccea AS |
1122 | if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) |
1123 | return -EINVAL; | |
1124 | ||
6185af2a LC |
1125 | uid = iwl_mvm_scan_uid_by_status(mvm, 0); |
1126 | if (uid < 0) | |
1127 | return uid; | |
d2496221 | 1128 | |
133c8259 | 1129 | memset(cmd, 0, ksize(cmd)); |
d2496221 | 1130 | |
133c8259 LC |
1131 | iwl_mvm_scan_umac_dwell(mvm, cmd, params); |
1132 | ||
6185af2a | 1133 | mvm->scan_uid_status[uid] = type; |
d2496221 | 1134 | |
d2496221 | 1135 | cmd->uid = cpu_to_le32(uid); |
c3e230b1 DS |
1136 | cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params, |
1137 | vif)); | |
d2496221 | 1138 | |
23ae6128 | 1139 | if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) |
8465fe6a AS |
1140 | cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); |
1141 | ||
cd55ccea | 1142 | if (iwl_mvm_scan_use_ebs(mvm, vif)) |
d2496221 DS |
1143 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | |
1144 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1145 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; | |
1146 | ||
f7b788b4 | 1147 | cmd->n_channels = params->n_channels; |
d2496221 | 1148 | |
e2ec4f6d | 1149 | iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap); |
d2496221 | 1150 | |
f7b788b4 LC |
1151 | iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
1152 | params->n_channels, ssid_bitmap, cmd); | |
d2496221 | 1153 | |
cd55ccea | 1154 | for (i = 0; i < params->n_scan_plans; i++) { |
cd55ccea AS |
1155 | struct cfg80211_sched_scan_plan *scan_plan = |
1156 | ¶ms->scan_plans[i]; | |
1157 | ||
cd55ccea AS |
1158 | sec_part->schedule[i].iter_count = scan_plan->iterations; |
1159 | sec_part->schedule[i].interval = | |
1160 | cpu_to_le16(scan_plan->interval); | |
1161 | } | |
1162 | ||
1163 | /* | |
1164 | * If the number of iterations of the last scan plan is set to | |
1165 | * zero, it should run infinitely. However, this is not always the case. | |
1166 | * For example, when regular scan is requested the driver sets one scan | |
1167 | * plan with one iteration. | |
8423cdc3 | 1168 | */ |
cd55ccea AS |
1169 | if (!sec_part->schedule[i - 1].iter_count) |
1170 | sec_part->schedule[i - 1].iter_count = 0xff; | |
cf5d317d | 1171 | |
283c2491 | 1172 | sec_part->delay = cpu_to_le16(params->delay); |
45d1b12e | 1173 | sec_part->preq = params->preq; |
d2496221 | 1174 | |
8df3e68f | 1175 | return 0; |
d2496221 DS |
1176 | } |
1177 | ||
6749dd80 LC |
1178 | static int iwl_mvm_num_scans(struct iwl_mvm *mvm) |
1179 | { | |
1180 | return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); | |
1181 | } | |
1182 | ||
1183 | static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) | |
1184 | { | |
1185 | /* This looks a bit arbitrary, but the idea is that if we run | |
1186 | * out of possible simultaneous scans and the userspace is | |
1187 | * trying to run a scan type that is already running, we | |
1188 | * return -EBUSY. But if the userspace wants to start a | |
1189 | * different type of scan, we stop the opposite type to make | |
1190 | * space for the new request. The reason is backwards | |
1191 | * compatibility with old wpa_supplicant that wouldn't stop a | |
1192 | * scheduled scan before starting a normal scan. | |
1193 | */ | |
1194 | ||
1195 | if (iwl_mvm_num_scans(mvm) < mvm->max_scans) | |
1196 | return 0; | |
1197 | ||
1198 | /* Use a switch, even though this is a bitmask, so that more | |
1199 | * than one bits set will fall in default and we will warn. | |
1200 | */ | |
1201 | switch (type) { | |
1202 | case IWL_MVM_SCAN_REGULAR: | |
1203 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) | |
1204 | return -EBUSY; | |
c7d42480 | 1205 | return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); |
6749dd80 LC |
1206 | case IWL_MVM_SCAN_SCHED: |
1207 | if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) | |
1208 | return -EBUSY; | |
04b08992 | 1209 | return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); |
19945dfb LC |
1210 | case IWL_MVM_SCAN_NETDETECT: |
1211 | /* No need to stop anything for net-detect since the | |
1212 | * firmware is restarted anyway. This way, any sched | |
1213 | * scans that were running will be restarted when we | |
1214 | * resume. | |
1215 | */ | |
1216 | return 0; | |
6749dd80 LC |
1217 | default: |
1218 | WARN_ON(1); | |
1219 | break; | |
1220 | } | |
1221 | ||
1222 | return -EIO; | |
1223 | } | |
1224 | ||
728e825f LC |
1225 | #define SCAN_TIMEOUT (16 * HZ) |
1226 | ||
1227 | void iwl_mvm_scan_timeout(unsigned long data) | |
1228 | { | |
1229 | struct iwl_mvm *mvm = (struct iwl_mvm *)data; | |
1230 | ||
1231 | IWL_ERR(mvm, "regular scan timed out\n"); | |
1232 | ||
1233 | del_timer(&mvm->scan_timer); | |
1234 | iwl_force_nmi(mvm->trans); | |
1235 | } | |
1236 | ||
6749dd80 LC |
1237 | int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1238 | struct cfg80211_scan_request *req, | |
1239 | struct ieee80211_scan_ies *ies) | |
1240 | { | |
3db7c6e7 LC |
1241 | struct iwl_host_cmd hcmd = { |
1242 | .len = { iwl_mvm_scan_size(mvm), }, | |
1243 | .data = { mvm->scan_cmd, }, | |
1244 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1245 | }; | |
1246 | struct iwl_mvm_scan_params params = {}; | |
6749dd80 | 1247 | int ret; |
cd55ccea | 1248 | struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; |
6749dd80 LC |
1249 | |
1250 | lockdep_assert_held(&mvm->mutex); | |
1251 | ||
1252 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1253 | IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); | |
1254 | return -EBUSY; | |
1255 | } | |
1256 | ||
1257 | ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); | |
1258 | if (ret) | |
1259 | return ret; | |
1260 | ||
3db7c6e7 LC |
1261 | /* we should have failed registration if scan_cmd was NULL */ |
1262 | if (WARN_ON(!mvm->scan_cmd)) | |
1263 | return -ENOMEM; | |
1264 | ||
1265 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1266 | return -ENOBUFS; | |
1267 | ||
4b817051 LC |
1268 | params.n_ssids = req->n_ssids; |
1269 | params.flags = req->flags; | |
f7b788b4 LC |
1270 | params.n_channels = req->n_channels; |
1271 | params.delay = 0; | |
f7b788b4 LC |
1272 | params.ssids = req->ssids; |
1273 | params.channels = req->channels; | |
1274 | params.mac_addr = req->mac_addr; | |
1275 | params.mac_addr_mask = req->mac_addr_mask; | |
1276 | params.no_cck = req->no_cck; | |
1277 | params.pass_all = true; | |
1278 | params.n_match_sets = 0; | |
1279 | params.match_sets = NULL; | |
3db7c6e7 | 1280 | |
cd55ccea AS |
1281 | params.scan_plans = &scan_plan; |
1282 | params.n_scan_plans = 1; | |
cf5d317d | 1283 | |
355346ba AS |
1284 | params.type = |
1285 | iwl_mvm_get_scan_type(mvm, | |
1286 | vif->type == NL80211_IFTYPE_P2P_DEVICE); | |
4b817051 | 1287 | |
45d1b12e LC |
1288 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
1289 | ||
859d914c | 1290 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
88742c9e | 1291 | hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
6185af2a LC |
1292 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, |
1293 | IWL_MVM_SCAN_REGULAR); | |
3db7c6e7 LC |
1294 | } else { |
1295 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; | |
45d1b12e | 1296 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
3db7c6e7 LC |
1297 | } |
1298 | ||
1299 | if (ret) | |
1300 | return ret; | |
1301 | ||
1302 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
78ba82f7 | 1303 | if (ret) { |
3db7c6e7 LC |
1304 | /* If the scan failed, it usually means that the FW was unable |
1305 | * to allocate the time events. Warn on it, but maybe we | |
1306 | * should try to send the command again with different params. | |
1307 | */ | |
1308 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
78ba82f7 | 1309 | return ret; |
3db7c6e7 | 1310 | } |
6749dd80 | 1311 | |
78ba82f7 EP |
1312 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); |
1313 | mvm->scan_status |= IWL_MVM_SCAN_REGULAR; | |
1314 | iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); | |
6749dd80 | 1315 | |
728e825f LC |
1316 | mod_timer(&mvm->scan_timer, jiffies + SCAN_TIMEOUT); |
1317 | ||
78ba82f7 | 1318 | return 0; |
6749dd80 LC |
1319 | } |
1320 | ||
65ff556b LC |
1321 | int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, |
1322 | struct ieee80211_vif *vif, | |
1323 | struct cfg80211_sched_scan_request *req, | |
19945dfb LC |
1324 | struct ieee80211_scan_ies *ies, |
1325 | int type) | |
65ff556b | 1326 | { |
8df3e68f LC |
1327 | struct iwl_host_cmd hcmd = { |
1328 | .len = { iwl_mvm_scan_size(mvm), }, | |
1329 | .data = { mvm->scan_cmd, }, | |
1330 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1331 | }; | |
1332 | struct iwl_mvm_scan_params params = {}; | |
65ff556b LC |
1333 | int ret; |
1334 | ||
6749dd80 LC |
1335 | lockdep_assert_held(&mvm->mutex); |
1336 | ||
1337 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1338 | IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); | |
1339 | return -EBUSY; | |
1340 | } | |
1341 | ||
19945dfb | 1342 | ret = iwl_mvm_check_running_scans(mvm, type); |
6749dd80 LC |
1343 | if (ret) |
1344 | return ret; | |
1345 | ||
8df3e68f LC |
1346 | /* we should have failed registration if scan_cmd was NULL */ |
1347 | if (WARN_ON(!mvm->scan_cmd)) | |
1348 | return -ENOMEM; | |
1349 | ||
1350 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1351 | return -ENOBUFS; | |
1352 | ||
4b817051 LC |
1353 | params.n_ssids = req->n_ssids; |
1354 | params.flags = req->flags; | |
f7b788b4 | 1355 | params.n_channels = req->n_channels; |
f7b788b4 LC |
1356 | params.ssids = req->ssids; |
1357 | params.channels = req->channels; | |
1358 | params.mac_addr = req->mac_addr; | |
1359 | params.mac_addr_mask = req->mac_addr_mask; | |
1360 | params.no_cck = false; | |
1361 | params.pass_all = iwl_mvm_scan_pass_all(mvm, req); | |
1362 | params.n_match_sets = req->n_match_sets; | |
1363 | params.match_sets = req->match_sets; | |
cd55ccea AS |
1364 | if (!req->n_scan_plans) |
1365 | return -EINVAL; | |
f7b788b4 | 1366 | |
cd55ccea AS |
1367 | params.n_scan_plans = req->n_scan_plans; |
1368 | params.scan_plans = req->scan_plans; | |
3b44a0ef | 1369 | |
355346ba AS |
1370 | params.type = |
1371 | iwl_mvm_get_scan_type(mvm, | |
1372 | vif->type == NL80211_IFTYPE_P2P_DEVICE); | |
cf5d317d | 1373 | |
283c2491 LC |
1374 | /* In theory, LMAC scans can handle a 32-bit delay, but since |
1375 | * waiting for over 18 hours to start the scan is a bit silly | |
1376 | * and to keep it aligned with UMAC scans (which only support | |
1377 | * 16-bit delays), trim it down to 16-bits. | |
1378 | */ | |
1379 | if (req->delay > U16_MAX) { | |
1380 | IWL_DEBUG_SCAN(mvm, | |
1381 | "delay value is > 16-bits, set to max possible\n"); | |
1382 | params.delay = U16_MAX; | |
1383 | } else { | |
1384 | params.delay = req->delay; | |
1385 | } | |
1386 | ||
65ff556b LC |
1387 | ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
1388 | if (ret) | |
1389 | return ret; | |
1390 | ||
45d1b12e LC |
1391 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
1392 | ||
859d914c | 1393 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
88742c9e | 1394 | hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
23ae6128 | 1395 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, type); |
65ff556b | 1396 | } else { |
8df3e68f | 1397 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; |
7d7de1e9 | 1398 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
8df3e68f LC |
1399 | } |
1400 | ||
1401 | if (ret) | |
1402 | return ret; | |
1403 | ||
1404 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1405 | if (!ret) { | |
1406 | IWL_DEBUG_SCAN(mvm, | |
1407 | "Sched scan request was sent successfully\n"); | |
1408 | mvm->scan_status |= type; | |
1409 | } else { | |
1410 | /* If the scan failed, it usually means that the FW was unable | |
1411 | * to allocate the time events. Warn on it, but maybe we | |
1412 | * should try to send the command again with different params. | |
1413 | */ | |
1414 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
65ff556b LC |
1415 | } |
1416 | ||
1417 | return ret; | |
1418 | } | |
1419 | ||
0416841d JB |
1420 | void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, |
1421 | struct iwl_rx_cmd_buffer *rxb) | |
d2496221 DS |
1422 | { |
1423 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1424 | struct iwl_umac_scan_complete *notif = (void *)pkt->data; | |
1425 | u32 uid = __le32_to_cpu(notif->uid); | |
8d14ccd8 | 1426 | bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
d2496221 | 1427 | |
8d14ccd8 | 1428 | if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) |
0416841d | 1429 | return; |
d2496221 | 1430 | |
8d14ccd8 LC |
1431 | /* if the scan is already stopping, we don't need to notify mac80211 */ |
1432 | if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { | |
1433 | ieee80211_scan_completed(mvm->hw, aborted); | |
1434 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
728e825f | 1435 | del_timer(&mvm->scan_timer); |
8d14ccd8 LC |
1436 | } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { |
1437 | ieee80211_sched_scan_stopped(mvm->hw); | |
a339e918 | 1438 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
8d14ccd8 LC |
1439 | } |
1440 | ||
1441 | mvm->scan_status &= ~mvm->scan_uid_status[uid]; | |
d2496221 | 1442 | IWL_DEBUG_SCAN(mvm, |
a7b3bc91 | 1443 | "Scan completed, uid %u type %u, status %s, EBS status %s\n", |
8d14ccd8 | 1444 | uid, mvm->scan_uid_status[uid], |
d2496221 DS |
1445 | notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? |
1446 | "completed" : "aborted", | |
a7b3bc91 AB |
1447 | iwl_mvm_ebs_status_str(notif->ebs_status)); |
1448 | IWL_DEBUG_SCAN(mvm, | |
1449 | "Last line %d, Last iteration %d, Time from last iteration %d\n", | |
1a84e771 AB |
1450 | notif->last_schedule, notif->last_iter, |
1451 | __le32_to_cpu(notif->time_from_last_iter)); | |
d2496221 | 1452 | |
f0bf8593 DS |
1453 | if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && |
1454 | notif->ebs_status != IWL_SCAN_EBS_INACTIVE) | |
5a4b2afa HD |
1455 | mvm->last_ebs_successful = false; |
1456 | ||
6185af2a | 1457 | mvm->scan_uid_status[uid] = 0; |
d2496221 DS |
1458 | } |
1459 | ||
0416841d JB |
1460 | void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
1461 | struct iwl_rx_cmd_buffer *rxb) | |
ee9219b2 AS |
1462 | { |
1463 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1464 | struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; | |
1465 | u8 buf[256]; | |
1466 | ||
1467 | IWL_DEBUG_SCAN(mvm, | |
1468 | "UMAC Scan iteration complete: status=0x%x scanned_channels=%d channels list: %s\n", | |
1469 | notif->status, notif->scanned_channels, | |
1470 | iwl_mvm_dump_channel_list(notif->results, | |
1471 | notif->scanned_channels, buf, | |
1472 | sizeof(buf))); | |
a339e918 LC |
1473 | |
1474 | if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { | |
1475 | IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); | |
1476 | ieee80211_sched_scan_results(mvm->hw); | |
1477 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; | |
1478 | } | |
ee9219b2 AS |
1479 | } |
1480 | ||
434f3c1b | 1481 | static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) |
d2496221 | 1482 | { |
88742c9e | 1483 | struct iwl_umac_scan_abort cmd = {}; |
434f3c1b | 1484 | int uid, ret; |
d2496221 DS |
1485 | |
1486 | lockdep_assert_held(&mvm->mutex); | |
1487 | ||
434f3c1b LC |
1488 | /* We should always get a valid index here, because we already |
1489 | * checked that this type of scan was running in the generic | |
1490 | * code. | |
1491 | */ | |
1492 | uid = iwl_mvm_scan_uid_by_status(mvm, type); | |
1493 | if (WARN_ON_ONCE(uid < 0)) | |
1494 | return uid; | |
1495 | ||
1496 | cmd.uid = cpu_to_le32(uid); | |
1497 | ||
d2496221 DS |
1498 | IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); |
1499 | ||
88742c9e JB |
1500 | ret = iwl_mvm_send_cmd_pdu(mvm, |
1501 | iwl_cmd_id(SCAN_ABORT_UMAC, | |
1502 | IWL_ALWAYS_LONG_GROUP, 0), | |
1503 | 0, sizeof(cmd), &cmd); | |
434f3c1b | 1504 | if (!ret) |
8d14ccd8 | 1505 | mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; |
434f3c1b LC |
1506 | |
1507 | return ret; | |
d2496221 DS |
1508 | } |
1509 | ||
f2461796 | 1510 | static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) |
d2496221 DS |
1511 | { |
1512 | struct iwl_notification_wait wait_scan_done; | |
6eb031d2 | 1513 | static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, |
f2461796 | 1514 | SCAN_OFFLOAD_COMPLETE, }; |
434f3c1b | 1515 | int ret; |
d2496221 | 1516 | |
f2461796 LC |
1517 | lockdep_assert_held(&mvm->mutex); |
1518 | ||
d2496221 DS |
1519 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
1520 | scan_done_notif, | |
1521 | ARRAY_SIZE(scan_done_notif), | |
434f3c1b | 1522 | NULL, NULL); |
d2496221 DS |
1523 | |
1524 | IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); | |
1525 | ||
859d914c | 1526 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
f2461796 LC |
1527 | ret = iwl_mvm_umac_scan_abort(mvm, type); |
1528 | else | |
1529 | ret = iwl_mvm_lmac_scan_abort(mvm); | |
1530 | ||
d2496221 | 1531 | if (ret) { |
434f3c1b | 1532 | IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); |
d2496221 DS |
1533 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
1534 | return ret; | |
1535 | } | |
1536 | ||
1537 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
d2496221 DS |
1538 | |
1539 | return ret; | |
1540 | } | |
1541 | ||
1542 | int iwl_mvm_scan_size(struct iwl_mvm *mvm) | |
1543 | { | |
859d914c | 1544 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
d2496221 DS |
1545 | return sizeof(struct iwl_scan_req_umac) + |
1546 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1547 | mvm->fw->ucode_capa.n_scan_channels + | |
1548 | sizeof(struct iwl_scan_req_umac_tail); | |
1549 | ||
65ff556b | 1550 | return sizeof(struct iwl_scan_req_lmac) + |
1f940386 LC |
1551 | sizeof(struct iwl_scan_channel_cfg_lmac) * |
1552 | mvm->fw->ucode_capa.n_scan_channels + | |
1553 | sizeof(struct iwl_scan_probe_req); | |
d2496221 | 1554 | } |
4ffb3650 DS |
1555 | |
1556 | /* | |
1557 | * This function is used in nic restart flow, to inform mac80211 about scans | |
1558 | * that was aborted by restart flow or by an assert. | |
1559 | */ | |
1560 | void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) | |
1561 | { | |
859d914c | 1562 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
6185af2a | 1563 | int uid, i; |
963221be | 1564 | |
6185af2a LC |
1565 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); |
1566 | if (uid >= 0) { | |
4ffb3650 | 1567 | ieee80211_scan_completed(mvm->hw, true); |
6185af2a | 1568 | mvm->scan_uid_status[uid] = 0; |
963221be | 1569 | } |
6185af2a LC |
1570 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); |
1571 | if (uid >= 0 && !mvm->restart_fw) { | |
4ffb3650 | 1572 | ieee80211_sched_scan_stopped(mvm->hw); |
a339e918 | 1573 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
6185af2a | 1574 | mvm->scan_uid_status[uid] = 0; |
963221be AB |
1575 | } |
1576 | ||
1577 | /* We shouldn't have any UIDs still set. Loop over all the | |
1578 | * UIDs to make sure there's nothing left there and warn if | |
1579 | * any is found. | |
1580 | */ | |
507e4cda | 1581 | for (i = 0; i < mvm->max_scans; i++) { |
6185af2a LC |
1582 | if (WARN_ONCE(mvm->scan_uid_status[i], |
1583 | "UMAC scan UID %d status was not cleaned\n", | |
1584 | i)) | |
1585 | mvm->scan_uid_status[i] = 0; | |
963221be | 1586 | } |
4ffb3650 | 1587 | } else { |
9af91f46 | 1588 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) |
4ffb3650 | 1589 | ieee80211_scan_completed(mvm->hw, true); |
9af91f46 LC |
1590 | |
1591 | /* Sched scan will be restarted by mac80211 in | |
1592 | * restart_hw, so do not report if FW is about to be | |
1593 | * restarted. | |
1594 | */ | |
a339e918 LC |
1595 | if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && |
1596 | !mvm->restart_fw) { | |
9af91f46 | 1597 | ieee80211_sched_scan_stopped(mvm->hw); |
a339e918 LC |
1598 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
1599 | } | |
4ffb3650 DS |
1600 | } |
1601 | } | |
dfbf156d | 1602 | |
c7d42480 | 1603 | int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) |
dfbf156d LC |
1604 | { |
1605 | int ret; | |
1606 | ||
c7d42480 | 1607 | if (!(mvm->scan_status & type)) |
dfbf156d LC |
1608 | return 0; |
1609 | ||
1610 | if (iwl_mvm_is_radio_killed(mvm)) { | |
1611 | ret = 0; | |
1612 | goto out; | |
1613 | } | |
1614 | ||
c7d42480 | 1615 | ret = iwl_mvm_scan_stop_wait(mvm, type); |
dfbf156d | 1616 | if (!ret) |
c7d42480 | 1617 | mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; |
dfbf156d LC |
1618 | out: |
1619 | /* Clear the scan status so the next scan requests will | |
1620 | * succeed and mark the scan as stopping, so that the Rx | |
1621 | * handler doesn't do anything, as the scan was stopped from | |
c7d42480 | 1622 | * above. |
dfbf156d | 1623 | */ |
c7d42480 | 1624 | mvm->scan_status &= ~type; |
dfbf156d | 1625 | |
c7d42480 LC |
1626 | if (type == IWL_MVM_SCAN_REGULAR) { |
1627 | /* Since the rx handler won't do anything now, we have | |
1628 | * to release the scan reference here. | |
1629 | */ | |
1630 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
728e825f | 1631 | del_timer(&mvm->scan_timer); |
c7d42480 LC |
1632 | if (notify) |
1633 | ieee80211_scan_completed(mvm->hw, true); | |
1634 | } else if (notify) { | |
dfbf156d | 1635 | ieee80211_sched_scan_stopped(mvm->hw); |
a339e918 | 1636 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
c7d42480 | 1637 | } |
dfbf156d LC |
1638 | |
1639 | return ret; | |
1640 | } |